CN207002119U - A kind of carrier with lifting platform - Google Patents

Abstract

The utility model discloses a transport vehicle with a lifting platform, relates to the technical field of structure design of the transport vehicle, and is invented to solve the problem that objects to be transported on the loading platform of the existing transport vehicle tend to slip during the transport process. The truck with lifting platform includes a base with wheels, a platform base located above the base, and a loading platform located above the platform base. The platform base is connected to the base through a first lifting mechanism, and the loading platform includes a fixed The platform and the movable platform, the fixed platform is connected with the platform base through the connecting piece, so that the fixed platform and the platform base remain relatively fixed, an opening is opened on the fixed platform, and the movable platform is embedded in the opening, and the movable platform passes through the second lift The mechanism is connected with the platform base, and the second lifting mechanism can drive the movable platform to move up and down relative to the platform base, so that the upper surface of the movable platform can be lower than the upper surface of the fixed platform. The utility model can be used for conveying objects.

Description

A transport vehicle with a lifting platform

technical field

The utility model relates to the technical field of structural design of a transport vehicle, in particular to a transport vehicle with a lifting platform.

Background technique

In the process of product manufacturing, raw materials, equipment or finished products need to be transported by a truck with a lifting platform, which can save manpower and improve production efficiency. Lifting platform trucks are applicable to many occasions. For example, in the production process of thin film transistor liquid crystal displays (TFT-LCD), a truck with a lifting platform is often needed to transport the mask (Mask).

In the production process of TFT-LCD, such as color-filter (Color-Filter) process, masks are often required to expose photoresist, and different types of LCD panels require different masks to Exposure, so that the mask board often needs to be replaced and transferred, and the mask board is usually heavy, and the use of manpower to transport will reduce the production efficiency, and the transfer of the mask board by using a truck with a lifting platform can greatly improve Production efficiency, therefore, pallet trucks with lifting tables play an important role in the production process of TFT-LCDs.

An existing transport vehicle with a lifting platform, as shown in Figure 1 and Figure 2, includes a base 01 with wheels 011, a loading platform 02 above the base 01, and the loading platform 02 is used to place a mask board box (indicated by the symbol a in the figure), the loading platform 02 is connected with the base 01 through the lifting mechanism 03, and the lifting mechanism 03 can drive the loading platform 02 to move up and down relative to the base 01, and one part of the upper surface of the loading platform 02 One end of the blocking rod 04 is provided with a handle 041, and the other end is provided with a stopper 042. The stopper 042 is used to control the cover on the loading platform 02. The membrane box is limited.

However, in the existing truck with a lifting platform, since the blocking rod 04 can rotate relative to the loading platform 02, the lifting platform truck will inevitably shake or vibrate during the process of transporting the mask board box. The blocking rod 04 is easy to rotate during shaking or vibration, so that the limiter 042 leaves the original position and causes loosening and offset, so the limiter 042 cannot play a good role in limiting the mask box . During the handling process, if the mask board box moves and interferes with the surrounding equipment (that is, during the handling process, the surrounding equipment is located on the movement path of the mask board box), then the mask board box is easily hit by the surrounding equipment And slide down from the loading platform 02, thereby causing the damage of the mask board in the mask board box; It is easy to slide off from the loading platform 02, thereby causing damage to the mask in the mask box.

Utility model content

The embodiment of the utility model provides a transport vehicle with a lifting platform, which can well limit the movement of the object to be transported on the loading platform during the handling process, so that the object to be transported is not easy to slip off the loading platform .

In order to achieve the above object, an embodiment of the present utility model provides a transport vehicle with a lifting platform, including a base with wheels, a platform base located above the base, and a loading platform located above the platform base, The platform base is connected to the base through a first lifting mechanism, and the first lifting mechanism can drive the platform base to move up and down relative to the base. The loading platform includes a fixed platform and a movable platform. The fixed platform is connected with the platform base through a connecting piece, so that the fixed platform and the platform base remain relatively fixed, an opening is opened on the fixed platform, and the movable platform is embedded in the opening Inside, the movable platform is connected to the platform base through a second lifting mechanism, and the second lifting mechanism can drive the movable platform to move up and down relative to the platform base, so that the upper surface of the movable platform Can be lower than the upper surface of the fixed platform.

Further, a limiting member is provided on the upper edge of the opening, the upper edge is the edge of the opening on the upper surface of the fixed platform, and the limiting member has a function for moving the object to be carried to the movable platform. platform gap.

Further, the first lifting mechanism is a scissor-type lifting mechanism, and the scissor-type lifting mechanism includes a fork-shaped frame, and the fork-shaped frame includes a first connecting rod and a second connecting rod hinged to each other. The first end of a connecting rod is hinged to the base through a first hinge shaft, the second end is slidably connected to the platform base, and the first end of the second connecting rod is connected to the platform base through a second hinge shaft. The seat is hinged, and the second end is slidingly connected with the base; the scissor lift mechanism also includes a driving device, which can apply a driving force to the first connecting rod or the second connecting rod to make the The fork frame drives the platform base to move up and down.

Furthermore, the drive device includes a warping rod and a push rod, the middle part of the warping rod is hinged to the base, the warping rod is arranged horizontally to the axis of the hinge shaft of the base, the first of the warping rod A pedal is provided at one end, the second end is hinged with the first end of the push rod, and the second end of the push rod is hinged with the first connecting rod.

Furthermore, the number of the yokes is two, and the two yokes are symmetrically arranged on both sides of the first plane, and the first hinge axes of the two yokes are collinear , the first plane is the central plane in the width direction of the base, and the driving device can apply a driving force to the two first connecting rods or the two second connecting rods to make the fork Drive the platform base to move up and down.

Further, the second lifting mechanism includes a planar link mechanism, and the planar link mechanism includes a third link, a fourth link, a fifth link and a sixth link, and the third link of the third link One end is hinged to the platform base through a first rotating shaft, the second end of the third connecting rod is hinged to the first end of the fourth connecting rod through a second rotating shaft, and the first end of the fourth connecting rod The two ends are hinged with the movable platform through the third rotating shaft, the first end of the fifth connecting rod is hinged with the platform base through the fourth rotating shaft, and the second end of the fifth connecting rod is connected through the fifth rotating shaft It is hinged with the first end of the sixth connecting rod, the second end of the sixth connecting rod is hinged with the movable platform through the sixth rotating shaft, and the third connecting rod is connected with the fifth connecting rod. The lengths are equal, the lengths of the fourth connecting rod and the sixth connecting rod are equal, the distance between the first rotating shaft and the fourth rotating shaft is equal to the distance between the third rotating shaft and the sixth rotating shaft The distances are equal, the second lifting mechanism also includes a lead screw, a fixing part and a driving part, the fixing part is arranged on the loading platform or the platform base, and the lead screw is rotatably arranged on the fixed On the part, the axis of the lead screw is parallel to the upper surface of the movable platform and perpendicular to the second rotating shaft or the fifth rotating shaft, the leading screw can move up and down relative to the fixing part, and the fixing part can Limiting the movement of the lead screw along its axis, the driving member is connected with the lead screw and can drive the lead screw to rotate, the lead screw is equipped with a first nut and a second nut, the first A nut is connected with the second rotating shaft, and the second nut is connected with the fifth rotating shaft.

Furthermore, the lead screw includes a first lead screw segment and a second lead screw segment, the screw threads of the first lead screw segment and the second lead screw segment have opposite directions of rotation, and the first nut and the second lead screw segment The first lead screw section cooperates, and the second nut cooperates with the second lead screw section.

Furthermore, the driving member is a rotating wheel, the rotation center axis of the rotation wheel is connected to the lead screw, and the axis of the rotation center axis is collinear with the axis of the lead screw.

Further, the lower surface of the movable platform is provided with a first guide column, and the upper surface of the platform base is provided with a second guide column; or the lower surface of the movable platform is provided with a second guide column, so The upper surface of the platform base is provided with a first guide column, and both the first guide column and the second guide column extend along the vertical direction, and the second guide column is provided with an inner hole along its axial direction, so The first guide post is in sliding fit with the inner hole.

Furthermore, there are two sets of planar linkage mechanisms, and the two sets of planar linkage mechanisms are symmetrically arranged on both sides of the second plane, and the two first rotating shafts in the two sets of planar linkage mechanisms The axes are collinear, the second plane is the center plane in the width direction of the platform base, the screw is located between the two groups of planar linkages, and the two sets of planar linkages Each of the second rotating shafts is connected to the first nut, and the two fifth rotating shafts in the two sets of planar linkage mechanisms are connected to the second nut.

The embodiment of the utility model provides the transport vehicle with a lifting platform, because the platform base is connected with the base through the first lifting mechanism, so that the platform base can move up and down relative to the base driven by the first lifting platform, and because The fixed platform is connected with the platform base through the connector, and the movable platform is connected with the platform base through the second lifting mechanism, so that when the platform base moves up and down, it will also drive the loading platform and the second The lifting mechanism moves up and down, so that the loading platform will reach the same height as the loading platform under the action of the first lifting mechanism, so as to facilitate the transfer of the loading objects from the loading platform to the loading platform; The platform includes a fixed platform and a movable platform, the fixed platform is connected with the platform base through a connecting piece, an opening is opened on the fixed platform, the movable platform is embedded in the opening, and the movable platform is connected to the platform base through the second lifting mechanism. The seat is connected, so that when the object to be transported is placed on the movable platform, the movable platform can move downward relative to the platform base under the drive of the second lifting mechanism, so that the upper surface of the movable platform is lower than the upper surface of the fixed platform , at this time, the side wall of the opening faces the object to be carried on the movable platform and plays a position-limiting role, so that the movement of the object to be carried can be restricted during the carrying process. When the object to be transported interferes with other equipment or the moving vehicle shakes at a high speed, it is difficult for the object to be transported to slide off the loading platform due to the limit of the side wall of the opening for the transported object, so that it can be Reduce accidental damage to objects to be handled.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural schematic diagram of a kind of existing truck with lifting platform;

Fig. 2 is the top view of this existing truck with lifting platform;

Fig. 3 is the front view (after removing the connector 5) of the transport vehicle with lifting platform in the utility model embodiment;

Fig. 4 is the left side view (after removing the fixing part 63) of the transport vehicle with lifting platform in the utility model embodiment;

5 is a three-dimensional structural diagram of the second lifting mechanism of the transport vehicle with the lifting platform in the embodiment of the present invention;

Fig. 6 is a top view of a transport vehicle with a lifting platform in an embodiment of the present invention;

Fig. 7 is a schematic diagram of the fixed workbench of the transport vehicle with the lifting platform in the embodiment of the present invention to limit the position of the transported objects;

Fig. 8 is a schematic diagram of docking of a transport vehicle with a lifting platform and a platform for placing objects to be transported in an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In describing the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientation or positional relationship shown in the installation position of the embodiment, and are only for the convenience of describing the utility model and simplifying the description, and It is not to indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and thus should not be construed as limiting the present invention.

The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

Referring to Fig. 3, Fig. 4 and Fig. 6, the embodiment of the present utility model provides a transport vehicle with a lifting platform, including a base 1 with wheels 11, a platform base 2 above the base 1, and a platform base 2 above the platform base 2. The loading platform 3, the platform base 2 is connected with the base 1 through the first lifting mechanism 4, the first lifting mechanism 4 can drive the platform base 2 to move up and down relative to the base 1, and the loading platform 3 includes a fixed platform 31 and a movable platform 32, the fixed platform 31 is connected with the platform base 2 through the connector 5 (as shown in Figure 4), so that the fixed platform 31 and the platform base 2 remain relatively fixed, the fixed platform 31 is provided with an opening 311, and the movable platform 32 Embedded in the opening 311, the movable platform 32 is connected with the platform base 2 through the second lifting mechanism 6, and the second lifting mechanism 6 can drive the movable platform 32 to move up and down relative to the platform base 2, so that the upper surface of the movable platform 32 Can be lower than the upper surface of the fixed platform 31 .

Wherein, the opening 311 has many shapes, such as rectangle, circle, etc. When the shape of the opening 311 is a rectangle, as shown in Figure 6, it can be used to carry box-like objects, such as mask board boxes, when the shape of the opening 311 is When it is round, it can be used to carry barrel-like objects. The shape of the opening 311 can be set according to the shape of the object to be transported, and is not specifically limited here; The surface is fixedly connected, and the connecting piece 5 can also be a right-angled rod (as shown in Figure 4), and the two ends of the right-angled rod are fixedly connected with the lower surface of the fixed platform 31 and the outer surface of the platform base 2 respectively, and the shape of the connecting piece 5 has There are many, so I won't list them all here.

Referring to Fig. 3, Fig. 4 and Fig. 6, the carrier vehicle with lifting platform provided by the embodiment of the present utility model, since the platform base 2 is connected with the base 1 through the first lifting mechanism 4, the platform base 2 can be in the Driven by the first lifting mechanism 4, the relative base 1 moves up and down, and because the fixed platform 31 is connected with the platform base 2 through the connector 5, the movable platform 32 is connected to the platform base 2 by the second lifting mechanism 6. Connected, so that when the platform base 2 moves up and down, it will also drive the loading platform 3 and the second lifting mechanism 6 to move up and down, so that the loading platform 3 will reach and be transported under the action of the first lifting mechanism 4 Objects (shown in label b among the figures) are placed on the same height of the platform (shown in label c in Figure 8 ), so as to facilitate the transfer of the carrying objects from the placement platform to the loading platform 3; since the loading platform 3 includes a fixed platform 31 And the movable platform 32, the fixed platform 31 is connected with the platform base 2 through the connector 5, the fixed platform 31 is provided with an opening 311, the movable platform 32 is embedded in the described opening 311, and the movable platform 32 passes through the second lifting mechanism 6 is connected with the platform base 2, so that when the object to be transported is placed on the movable platform 32, the movable platform 32 can move downward relative to the platform base 2 driven by the second lifting mechanism 6, so that the movable The upper surface of the platform 32 is lower than the upper surface of the fixed platform 31. At this time, the side wall of the opening 311 faces the effect of limiting the object to be carried on the movable platform 32 (as shown in FIG. restrict the movement of objects to be transported. When the movement of the object to be transported interferes with other equipment or the speed of the transport vehicle is fast and the shaking is large, since the side wall of the opening 311 limits the position of the transported object, it is difficult for the object to be transported to slide off the loading platform 3 . Accidental damage to objects to be transported can thus be reduced.

When the transport vehicle with lifting platform in the embodiment of the present utility model transports the object to be carried, as shown in Figure 8, first the loading platform 3 will be raised to be level with the storage platform c of the object to be carried by the first lifting mechanism 4 Then the loading platform 3 is docked with the object storage platform c, and then the object to be carried is slid onto the loading platform 3. After the object to be carried slides onto the movable platform 32, the second elevating mechanism 6 Drive the movable platform 32 to descend, and the side wall of the opening 311 is used to limit the position of the object to be transported. Finally, after the first lifting mechanism 4 adjusts the loading platform 3 to a suitable height, the truck leaves the storage platform c for the object to be transported. Things are transported.

After the loading platform 3 is docked with the object storage platform c, in order to facilitate the object to be carried from the storage platform to the movable platform 32, as shown in Figure 6, a stopper 7 is provided on the upper edge of the opening 311, and the upper edge Because the opening 311 is located on the edge of the upper surface of the fixed platform 31 , the limiting member 7 has a notch 74 for the object to be transported to move to the movable platform 32 . In this way, the object to be transported can slide into the area surrounded by the limiter 7 from the gap 74, and the limiter 7 can play the role of limiting and guiding the sliding of the object to be transported, so that the object to be transported along the correct direction. Sliding on the movable platform 32 accurately in the direction, at the same time, when the object to be carried slides on the movable platform 32, the limit member 7 can also prevent the object to be carried from continuing to move, thereby preventing the object to be carried from sliding over the movable platform 32, Ensure that the object to be transported is located on the movable platform 32.

Wherein, the limiting member 7 may be a baffle plate, a bar, etc., which is not specifically limited here. The limiter 7 can be a closed structure arranged around the upper edge of the opening 311, or an unclosed structure arranged around the upper edge of the opening 311. For example, the limiter 7 can be a plurality of limit bars, and a plurality of limiters The bars are arranged at intervals around the upper edge of the opening 311 .

Referring to Fig. 6, when the shape of the opening 311 is a rectangle, the limiter 7 includes a first limiter 71, a second limiter 72 and a third limiter 73, the first limiter 71, the second limiter The part 72 and the third limiting part 73 are arranged at the edges of three sides of the opening 311 , and the fourth side of the opening 311 can be used as a notch 74 . When the object to be conveyed slides in from the gap 74, the first stopper 71 and the second stopper 72 located on both sides of the sliding direction of the object to be conveyed can play a guiding role in the sliding of the object to be conveyed, so that the object to be conveyed can slide Enter on the activity platform 32. After the object to be conveyed slides onto the movable platform 32, the third stopper 73 opposite to the gap 74 can prevent the object to be conveyed from continuing to move, thereby preventing the object to be conveyed from sliding over the movable platform 32 and ensuring that the object to be conveyed is located on the movable platform. 32 on.

When the transport vehicle with lifting platform in the embodiment of the present utility model carries different objects to be carried, since the size of different objects to be carried may be different, in order to ensure that the side wall surface of the opening 311 can handle objects of different sizes. The carrying object plays a good position-limiting effect. When the second lifting mechanism 6 drives the movable platform 32 to descend and the upper surface of the movable platform 32 is lower than the upper surface of the fixed platform 31, the distance between the object to be carried and the side wall of the opening 311 can be adjusted. Filling parts are placed in the gap to eliminate the gap between the object to be carried and the side wall of the opening 311, so that the side wall of the opening 311 can have a better limit effect on the object to be carried, so as to prevent it from happening during the transportation. Move to make the objects to be transported less vulnerable to damage. Wherein, the filling member may be a baffle, a foam member, etc., which are not specifically limited here.

When the transport vehicle with lifting platform in the embodiment of the present utility model is carrying objects, the second lifting mechanism 6 will drive the movable platform 32 and the object to be carried on the movable platform 32 to descend, and when the upper end of the object to be carried is lower than the fixed When the upper surface of platform 31, at this moment can place another object to be carried on the upper end of object to be carried, if the upper end of the object to be carried below is uneven, a flat board can be placed above it, and another object to be carried can be placed on on the tablet. In this way, the transport vehicle with the lifting platform can transport two objects at the same time, thereby improving the transport efficiency.

In the truck with lifting platform provided by the embodiment of the present invention, the type of the first lifting mechanism 4 is not unique, such as the first lifting mechanism 4 can be a screw lifting mechanism, specifically, the base 1 is rotatably provided with a wire The leading screw is arranged in the vertical direction, and the lower end of the leading screw is provided with a motor, which can drive the leading screw to rotate, and the leading screw is equipped with a nut seat, which is connected with the platform base 2. When the loading platform 3 needs to be lifted, the motor drives the lead screw to rotate, and the nut seat on the leading screw can drive the platform base 2 to move up and down, so that the loading platform 3 moves up and down.

In addition, the first lifting mechanism 4 can also be a scissor-type lifting mechanism. Specifically, as shown in FIGS. Rod 411 and second connecting rod 412, the first end of the first connecting rod 411 is hinged with the base 1 through the first hinge shaft, the second end is slidingly connected with the platform base 2, and the first end of the second connecting rod 412 is connected through the first The two hinged shafts are hinged with the platform base 2, and the second end is slidably connected with the base 1; the scissor lift mechanism also includes a driving device 42, and the driving device 42 can apply a driving force to the first connecting rod 411 or the second connecting rod 412 to Make the fork frame 41 drive the platform base 2 to move up and down. When the loading platform 3 needs to be lifted, the driving device 42 applies a driving force to the first connecting rod 411 or the second connecting rod 412, and under the action of the driving force, the first connecting rod 411 and the second connecting rod 412 are hinged around the two. Point rotation, to drive the platform base 2 to move up and down. Compared with the screw lifting mechanism, the scissor lifting mechanism has a more compact structure, more stable operation, less noise, and higher transmission power, which enables the truck to carry heavier objects.

Wherein, in the fork frame 41, the first connecting rod 411 can be hinged with the hinged seat (the hinged seat f and the hinged seat e shown in Fig. 3 ) provided on the platform base 2, and the second connecting rod 412 can be It is hinged with the hinged seat (articulated seat d and hinged seat g shown in FIG. 3 ) provided on the movable platform 32 .

In the embodiment where the first lifting mechanism 4 is a scissor-type lifting mechanism, the driving device 42 is not unique. For example, the driving device 42 can be a hydraulic cylinder. Specifically, the cylinder barrel of the hydraulic cylinder is hinged with the base 1, and the hydraulic cylinder The piston rod is hinged to the first connecting rod 411 . When the hydraulic cylinder is working, the piston rod pushes the first connecting rod 411 to rotate around the hinge axis of the first connecting rod 411 and the second connecting rod 412 through stretching, so as to drive the platform base 2 to move up and down.

In addition, the driving device 42 can also have the following structure: as shown in Figure 3 and Figure 4, the driving device 42 includes a warping rod 421 and a push rod 422, the middle part of the warping rod 421 is hinged with the base 1, and the hinge of the warping rod 421 and the base 1 The axis of the shaft is arranged horizontally, the first end of the warping rod 421 is provided with a pedal 4211 , the second end is hinged with the first end of the push rod 422 , and the second end of the push rod 422 is hinged with the first connecting rod 411 . When the loading platform 3 needs to be raised, step on the foot pedal 4211 downward, and the end of the warping rod 421 connected to the push rod 422 will tilt upward, and the push rod 422 will move upward and exert an upward force on the first connecting rod 411 , under the action of the push rod 422, the first connecting rod 411 and the second connecting rod 412 rotate around their hinge axis, so that the platform base 2 rises upwards, and at the same time, the platform base 2 drives the loading platform 3 upwards. rise. Compared with the hydraulic cylinder, the driving device 42 shown in FIG. 3 has a simpler structure and does not require hydraulic system accessories, which can greatly reduce the design and manufacturing costs of the truck.

In order to make the lifting process of the loading platform 3 more stable, as shown in Figure 4, the number of fork-shaped frames 41 is two, and the two fork-shaped frames 41 are symmetrically arranged on both sides of the first plane, and the two fork-shaped frames The first hinge axes in 41 are collinear (that is, the planes of the two fork frames 41 are parallel to each other), the first plane is the central plane A on the width direction of the base 1 (X direction in Fig. 4), and the driving device 42 can move toward the two The first connecting rod 411 or the two second connecting rods 412 apply a driving force to make the fork 41 drive the platform base 2 to move up and down. In this way, both sides of the central plane A of the loading platform 3 can be affected by the force of the fork 41, and the force balance on both sides of the central plane A of the loading platform 3 can be made, so that the lifting of the loading platform 3 can be achieved. The process is smoother.

Wherein, the two first connecting rods 411 can be connected by a first fixed rod (shown by a mark h in FIG. 4 ), and the driving device 42 can directly apply force to the first fixed rod, such as the second end of the push rod 422 It can be hinged with the first fixed rod and the first connecting rod 411 ; or the two second connecting rods 412 can be connected through the second fixed rod, and the driving device 42 can directly apply force to the second fixed rod.

In the truck with lifting platform provided by the embodiment of the present utility model, the type of the second lifting mechanism 6 is not unique, such as the second lifting mechanism 6 can be the first scissor type lifting mechanism, specifically, the first scissors The type lifting mechanism includes the seventh connecting rod and the eighth connecting rod which are mutually hinged, the first end of the seventh connecting rod is hinged with the platform base 2, the second end is slidingly connected with the movable platform 32, and the first end of the eighth connecting rod It is hinged with the movable platform 32, and the second end is slidingly connected with the platform base 2; the first scissor lift mechanism also includes a first driving device, and the first driving device can apply a driving force to the seventh connecting rod or the eighth connecting rod to The fork frame drives the platform base 2 to move up and down. When the object to be transported slides to the movable platform 32, the first driving device applies a driving force to the seventh connecting rod or the eighth connecting rod. Rotate to drive the movable platform 32 to move downward or upward.

In addition, the second lifting mechanism 6 can also be the following mechanism: as shown in Figure 3, Figure 4 and Figure 5, the second lifting mechanism 6 includes a plane link mechanism 61, and the plane link mechanism 61 includes a third link 611, a Four connecting rods 612, the fifth connecting rod 613 and the sixth connecting rod 614, the first end of the third connecting rod 611 is hinged with the platform base 2 through the first rotating shaft 615a, the second end of the third connecting rod 611 is connected through the second The rotating shaft 615b is hinged with the first end of the fourth connecting rod 612, the second end of the fourth connecting rod 612 is hinged with the movable platform 32 through the third rotating shaft 615c, and the first end of the fifth connecting rod 613 is connected through the fourth rotating shaft 616a Hinged with the platform base 2, the second end of the fifth connecting rod 613 is hinged with the first end of the sixth connecting rod 614 through the fifth rotating shaft 616b, and the second end of the sixth connecting rod 614 is connected with the movable The platform 32 is hinged, the length of the third connecting rod 611 is equal to that of the fifth connecting rod 613, the length of the fourth connecting rod 612 is equal to that of the sixth connecting rod 614, and the distance between the first rotating shaft 615a and the fourth rotating shaft 616a is equal to that of the first rotating shaft 615a. The distance between the three rotating shafts 615c and the sixth rotating shaft 616c is equal; the second lifting mechanism 6 also includes a lead screw 62, a fixing part 63 and a driving part 64, and the fixing part 63 is arranged on the loading platform 3 or the platform base 2, and the wire The bar 62 is rotatably arranged on the fixed part 63, the axis of the leading screw 62 is parallel to the upper surface of the movable platform 32 and perpendicular to the second rotating shaft 615b or the fifth rotating shaft 616b, the leading screw 62 can move up and down relative to the fixing part 63 (can be A chute extending up and down is provided on the fixing part 63, a sliding seat is slidably matched in the chute, and the leading screw 62 is rotatably arranged on the sliding seat), and the fixing part 63 can limit the movement of the leading screw 62 along the direction of its axis, and the driving part 64 is connected with the lead screw 62 and can drive the lead screw 62 to rotate, the lead screw 62 is fitted with a first nut 65 and a second nut 66, the first nut 65 is connected with the second rotating shaft 615b, the second nut 66 is connected with the fifth The rotating shaft 616b is connected. The working process of the lifting mechanism is as follows: when the object to be transported slides onto the movable platform 32, the driving member 64 can drive the lead screw 62 to rotate, and the first nut 65 and the second nut 66 that cooperate with the lead screw 62 move relative to the lead screw 62 , the second rotating shaft 615b connected with the first nut 65 and the fifth rotating shaft 616b connected with the second nut 66 start to move to adjust the distance between the third connecting rod 611 and the fourth connecting rod 612, between the fifth connecting rod 613 and the first connecting rod The angle between the six connecting rods 614 can adjust the up and down movement of the movable platform 32 relative to the fixed platform 31 . Wherein, in the planar link mechanism 61, the third link 611 and the fifth link 613 can be respectively hinged with the hinge seat provided on the platform base 2, and the fourth link 612 and the sixth link 614 can be respectively It is hinged with the hinge seat provided on the movable platform 32 .

Both the lifting mechanism of the first scissor-type elevating mechanism and the lifting mechanism of the lead screw and nut-driven plane linkage mechanism 61 can realize the up and down movement of the movable platform 32 relative to the fixed platform 31, but compared with the scissor-type elevating mechanism, the lead screw and nut drive the plane linkage The lifting mechanism of the mechanism 61 can adjust the lifting of the movable platform 32 in a small range, so that the positional relationship between the object to be transported and the opening 311 can be adjusted very accurately, so that the inner wall of the opening 311 can better limit the position of the object to be transported .

In the embodiment in which the second lifting mechanism 6 is that the lead screw nut drives the planar link mechanism 61 to lift, the motion relationship of the two nuts on the lead screw 62 is not unique. For example, the two nuts on the lead screw 62 can be as follows: Mode movement: when the lead screw 62 rotates, the direction of movement of the two nuts on the lead screw 62 is the same, that is, the screw thread of the lead screw 62 has only one direction of rotation. When the lead screw 62 drives the planar linkage mechanism 61 to drive the movable platform 32 up and down During the process, the third link 611 is parallel to the fifth link 613 , and the fourth link 612 is parallel to the sixth link 614 . In addition, the two nuts on the lead screw 62 can also move in the following manner: when the lead screw 62 rotates, the direction of movement of the two nuts on the lead screw 62 is opposite. Specifically, as shown in FIG. 5 , the lead screw 62 includes The first lead screw section 621 and the second lead screw section 622, the thread direction of the first lead screw section 621 and the second lead screw section 622 are opposite, the first nut 65 cooperates with the first lead screw section 621, and the second nut 66 Cooperate with the second lead screw section 622 . Compared with the two nuts moving in the same direction, when the two nuts move oppositely, the shape stability of the third connecting rod 611, the fourth connecting rod 612, the fifth connecting rod 613, and the sixth connecting rod 614 is better, which can make the The up and down movement of movable platform 32 is more stable.

Wherein, the type of the driving member 64 is not unique, for example, the driving member 64 can be a motor, the motor drives the lead screw 62 to rotate, and the first nut 65 and the second nut 66 on the lead screw 62 move towards the opposite direction, thereby the third nut 65 can be adjusted. The angles between the connecting rod 611 and the fourth connecting rod 612 , and between the fifth connecting rod 613 and the sixth connecting rod 614 are used to make the movable platform 32 move up and down relative to the fixed platform 31 .

In addition, as shown in FIG. 3 and FIG. 4 , the driving member 64 can also be a wheel, the rotation center axis of the wheel is connected with the lead screw 62 , and the axis of the rotation center axis is collinear with the axis of the lead screw 62 . In this way, when the object to be transported slides onto the movable platform 32, the rotating wheel drives the lead screw 62 to rotate, and the first nut 65 and the second nut 66 on the lead screw 62 move towards the opposite direction, thereby the third connecting rod 611 and the third connecting rod 611 can be adjusted. The angles between the fourth link 612 and between the fifth link 613 and the sixth link 614 allow the movable platform 32 to move up and down relative to the fixed platform 31 . Compared with the motor, when the driving member 64 is a runner, the structure is simple, the cost is low, no need to consume electric energy, and it is more convenient to adjust the lifting of the movable platform 32 .

In order to make the lifting of the movable platform 32 more stable, as shown in Figure 4 and Figure 5, the lower surface of the movable platform 32 is provided with a first guide column 67, and the upper surface of the platform base 2 is provided with a second guide column 68, the first Both the guide post 67 and the second guide post 68 extend along the vertical direction, and the second guide post 68 defines an inner hole (not shown in the figure) along its axis direction, and the first guide post 67 is slidingly engaged with the inner hole. In the process that the second elevating mechanism 6 drives the movable platform 32 to move up and down, through the sliding cooperation between the first guide post 67 and the second guide post 68, the up and down movement of the movable platform 32 can be guided. When there is a gap, the movable platform 32 can be prevented from shaking during the up and down movement, so that the lifting of the movable platform 32 can be made more stable.

Wherein, the positions of the first guide column 67 and the second guide column 68 can also be reversed, that is, the lower surface of the movable platform 32 is provided with the second guide column 68 , and the upper surface of the platform base 2 is provided with the first guide column 67 . The beneficial effects produced after the position of the first guide post 67 and the second guide post 68 are the same as those before the exchange, will not be repeated here.

In order to make the movable platform 32 more balanced in the lifting process, as shown in FIG. The axes of the two first rotating shafts 615a in the link mechanism 61 are collinear (that is, the planes where the two groups of planar link mechanisms 61 are located are parallel to each other), and the second plane is the central plane in the width direction of the movable platform 32 (in Fig. 4 Surface B), the lead screw 62 is located between the two sets of planar link mechanisms 61, and the two second rotating shafts 615b in the two sets of planar link mechanisms 61 are all connected to the first nut 65, and the two sets of planar link mechanisms 61 The two fifth rotating shafts 616b are connected to the second nut 66 . By arranging two groups of plane linkages 61 in this way, both sides of the second plane can provide active force to the movable platform 32, which can make the movable platform 32 more balanced in force during the lifting process, so that the up and down movement of the movable platform 32 is more stable. smooth.

The number of the first guide post 67 and the second guide post 68 between the movable platform 32 and the platform base 2 is also not unique, such as the first guide post 67 and the second guide post 68 can be set in one group, and the first guide post 67 And the second guide post 68 is located below the center of the movable platform 32 . In addition, multiple sets of the first guide column 67 and the second guide column 68 may also be provided, and multiple sets of the first guide column 67 and the second guide column 68 are symmetrically arranged on both sides of the second plane B. For example as shown in Figure 5, four groups of first guide columns 67 and second guide columns 68 can be set between the movable platform 32 and the platform base 2, and each group of first guide columns 67 and second guide columns 68 can be arranged on the movable platform. Between the platform 32 and the hinged seat provided on the platform base 2, that is, between the hinged seat O1 and O2, between the hinged seat P1 and P2, between the hinged seat R1 and R2, between the hinged seat S1 and S2 . Compared with setting a group of first guide posts 67 and second guide posts 68, multiple sets of first guide posts 67 and second guide posts 68 guide the movable platform 32, which can make the movable platform 32 easier to maintain balance, thereby making the movable platform Platform 32 is more stable during up and down motion.

The above are only specific embodiments of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present utility model. All should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. a kind of carrier with lifting platform, it is characterised in that including the base with wheel, above the base Platform base and the article carrying platform above the platform base, the platform base by the first elevating mechanism with it is described Base is connected, and first elevating mechanism can drive the relatively described base of the platform base to move up and down, and the loading is put down Platform includes fixed platform and movable platform, and the fixed platform is connected by connector with the platform base, so that described Fixed platform keeps being relatively fixed with the platform base, opening is offered in the fixed platform, the movable platform is embedded In in the opening, the movable platform is connected by the second elevating mechanism with the platform base, second lift Structure can drive the relatively described platform base of the movable platform to move up and down, so that the upper surface of the movable platform can be less than institute State the upper surface of fixed platform.

2. the carrier according to claim 1 with lifting platform, it is characterised in that be provided with the upper edge of the opening Locating part, the upper edge has for the opening on the edge of the fixed platform upper surface, the locating part to be used for Thing to be handled is moved to the breach of the movable platform.

3. the carrier according to claim 1 or 2 with lifting platform, it is characterised in that first elevating mechanism is Scissor-type lifting mechanism,

The scissor-type lifting mechanism includes forked frame, and the forked frame includes the first connecting rod and second connecting rod being hinged, The first end of the first connecting rod is hinged by the first jointed shaft and the base, and the second end is slided with the platform base to be connected Connect, the first end of the second connecting rod is hinged by the second jointed shaft and the platform base, and the second end is slided with the base Connection；

The scissor-type lifting mechanism also includes drive device, and the drive device can connect to the first connecting rod or described second Bar applies driving force so that the forked frame drives the platform base to move up and down.

4. the carrier according to claim 3 with lifting platform, it is characterised in that the drive device include stick up bar and Push rod, the middle part for sticking up bar are hinged with the base, and the axis horizontal for sticking up bar and the jointed shaft of the base is set, institute State and stick up the first end of bar and be provided with pedal, the second end and the first end of the push rod are hinged, the second end of the push rod and institute First connecting rod is stated to be hinged.

5. the carrier according to claim 3 with lifting platform, it is characterised in that the number of the forked frame is two Individual, two forked frames are symmetricly set in the both sides of the first plane, and described first in two forked frames is be hinged Axis collinear, first plane are the median plane on the base width direction, and the drive device can be to two described the One connecting rod or two second connecting rods apply driving force so that the forked frame drives the platform base up and down motion.

6. the carrier according to claim 1 or 2 with lifting platform, it is characterised in that the second elevating mechanism bag Include planar linkage mechanism,

The planar linkage mechanism includes third connecting rod, fourth link, the 5th connecting rod and six-bar linkage, and the of the third connecting rod One end is hinged by first rotating shaft and the platform base, and the end of third connecting rod second passes through the second rotating shaft and the described 4th The first end of connecting rod is hinged, and the second end of the fourth link is hinged by the 3rd rotating shaft with the movable platform, described The first end of 5th connecting rod is hinged by the 4th rotating shaft with the platform base, and second end of the 5th connecting rod passes through the 5th turn The first end of axle and the six-bar linkage is hinged, and the second end of the six-bar linkage passes through the 6th rotating shaft and the movable platform It is hinged, the equal length of the third connecting rod and the 5th connecting rod, the fourth link and the length of the six-bar linkage It is equal, the distance between the first rotating shaft and the 4th rotating shaft between the 3rd rotating shaft and the 6th rotating shaft away from From equal,

Second elevating mechanism also includes leading screw, fixture and actuator, the fixture be arranged at the article carrying platform or On the platform base, the leading screw is rotatably disposed on the fixture, and the diameter parallel of the leading screw is in the activity The upper surface of platform and perpendicular to second rotating shaft or the 5th rotating shaft, the leading screw can relatively described fixture move up and down, And the fixture can limit the leading screw and be moved along the direction of its axis, the actuator is connected with the leading screw and can Drive the leading screw to rotate, be combined with the first nut and the second nut on the leading screw, first nut with described second turn Axle is connected, and second nut is connected with the 5th rotating shaft.

7. the carrier according to claim 6 with lifting platform, it is characterised in that the leading screw includes the first leading screw section With the second leading screw section, the thread rotary orientation of the first leading screw section and the second leading screw section on the contrary, first nut with it is described First leading screw section coordinates, and second nut coordinates with the second leading screw section.

8. the carrier according to claim 6 with lifting platform, it is characterised in that the actuator is runner, described The Pivot axle of runner is connected with the leading screw, and the axis of the axis of the Pivot axle and the leading screw is total to Line.

9. the carrier according to claim 1 or 2 with lifting platform, it is characterised in that under in the movable platform Surface is provided with the first lead, and the upper surface of the platform base is provided with the second lead；Or in the movable platform under Surface is provided with the second lead, and the upper surface of the platform base is provided with the first lead,

First lead vertically extends with second lead, and second lead is along its axis direction Endoporus is offered, first lead is slidably matched with the endoporus.

10. the carrier according to claim 6 with lifting platform, it is characterised in that the planar linkage mechanism is two Group, planar linkage mechanism described in two groups are symmetricly set in the both sides of the second plane, and in planar linkage mechanism described in two groups The axis collinear of two first rotating shafts, second plane is the median plane on the platform base width, described Leading screw between planar linkage mechanism described in two groups, two second rotating shafts in planar linkage mechanism described in two groups with First nut is connected, two in planar linkage mechanism described in two groups the 5th rotating shaft with the second nut phase Connection.