JPH07267091A - Cargo handling vehicle - Google Patents

Abstract

PURPOSE:To provide a cargo handling vehicle which can load and unload a cylindrical work such as a cable reel directly placed on a road. CONSTITUTION:A cargo handling vehicle 1 which has a vehicle base portion 3 having steering wheels 2 to be steered and arm members 4, 4 projecting parallel from this vehicle base portion 3. The arm members 4 have a pair of supporting members respectively which enter into a gap between an outer periphery of a cylindrical work 5 placed with a center shaft turned perpendicular to a longitudinal direction of the arm members 4 and a road surface at both sides of a landing line on which the work is landed made when the slanted arm members 4 approach respectively to the opposite sides and lifting wheels 7 which is lifted to the arm members 4 for lifting up the work 5 on the supporting member 6 by lifting up the arm members 4 accompanied by its descent. A supporting member 9 for floating the arm member from the road surface by contacting with the road surface and associating with the steering wheels 2 and supporting weight of the arm is provided in a state unloading the work 5 from the arm members 4 and lifting the lifting wheels 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo handling vehicle capable of efficiently handling a cylindrical work such as a cable reel directly placed on a road surface.

[0002]

2. Description of the Related Art Conventionally, a cylindrical work such as a cable reel formed by winding a cable wire around a drum has been handled by various methods. Among them, a forklift truck or a conveyor is used. It is generally done.

When a forklift truck is used for loading and unloading, a shaft body such as a ram attachment is usually provided so as to project from the forklift truck and can be moved up and down. It is inserted into and handled.

On the other hand, when a conveyor is used, the cable reel is manually rolled to a place such as a vertical elevator,
After that, it is lifted up to the conveyor line by the vertical elevator and moved on the conveyor.

However, in the former one using the forklift truck, since the shaft body of the ram attachment is inserted into the center hole of the cable reel, when the cable reel is supplied to the winding shaft of the winding machine or the like. However, in the latter case of using a conveyor, the conveyance route of the cable reel is limited, and especially when the cable reel is stored by directly placing it on the road surface, There is a problem of lack of sex.

In order to solve such a problem, Japanese Unexamined Patent Publication No.
A transportation carriage shown in Japanese Patent No. 38440 has been proposed.

As shown in FIG. 6 (A), this transportation carriage is provided with a central member b having caster wheels a, and a lateral movement of the central member b so that the central member b can be approached and separated by a guide g. And a pair of supporting elements c and d, on which the cable reels e can be placed, and lifting wheels h for raising and lowering the supporting elements c and d. And a transfer wheel j whose rotation axis direction is parallel to the longitudinal direction of the support elements c and d.

However, when loading and unloading the cable reel e, as shown in FIG. 6B, the elevating wheel h is raised with respect to the supporting elements c and d, and the cable reel e is grounded. By grounding the transfer wheel j, it is possible to open and close the support elements c and d while separating the lifting plates f and f from the cable reel e, and the lifting piece f can be advanced below the cable reel e.

From this state, the lifting wheel h is mounted on the supporting element c,
By lowering it with respect to d, the cable reel e can be lifted from the road surface without using the center hole i thereof.

[0010]

However, in the above-described transportation carriage, the lifting wheel h is levitated, the transfer wheel j orthogonal to the rotation axis of the lifting wheel h is grounded, and the cable reel e and the lifting plate f are provided. , F are provided to facilitate the lateral movement of the support elements c and d. However, when an external force acts on the transfer wheel j from the road surface due to unevenness of the road surface, the guide g is twisted. There is a problem of deteriorating workability during cargo handling.

The present invention has been devised in view of the above problems, and it is possible to solve the above problems on the basis of providing a supporting member for floating an arm body supporting a cable reel or the like from the road surface. The purpose is to provide a cargo handling vehicle.

[0012]

SUMMARY OF THE INVENTION The present invention comprises a vehicle base body having steered wheels to be steered, and an arm body projecting in parallel from the vehicle base body. When the tilted arm bodies approach each other, a gap is formed between the outer peripheral surface of the cylindrical work piece that is placed with its central axis oriented at right angles to the longitudinal direction of the arm body and the road surface on both sides of the ground line where the work piece is grounded. A cargo handling vehicle provided with a pair of receiving pieces that enter and an elevating wheel that raises and lowers the arm body with respect to the arm body and lifts the arm body as the arm body descends. In the state where the workpiece is unloaded and the lifting wheels are raised, a support member for contacting the road surface and supporting the weight of the arm body in cooperation with the steered wheels to float the arm body from the road surface is provided. It is a cargo-handling vehicle to.

[0013]

According to the present invention, the arm is supported by supporting the weight of the arm body in contact with the road surface and in cooperation with the steered wheel when the work is unloaded from the arm body and the lifting wheels are raised. As a result of providing the support member for floating the body from the road surface, no external force acts on the arm body, the movement becomes smooth, and workability is improved. By making the support member extendable / contractible in the vertical direction, the arm member can also be lifted and lowered by this support member, and the unloading of the work from the arm member becomes easier.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The cargo handling vehicle 1 of the present invention includes a vehicle base body 3, a pair of arm bodies 4 projecting in parallel from the vehicle base body 3, and a support member 9 capable of supporting the weight of the arm bodies. An unmanned cargo-handling vehicle that can automatically steer by detecting a trigger band and the like laid on the road surface with a sensor S provided at the tip of the arm body 4 is illustrated.

The vehicle base portion 3 includes a steered vehicle 2, which is rotatably driven by an electric motor 12 and is pivotally supported by a support bracket 10 which is pivotally movable by a bearing 16. A large swing gear 11 is fixed to the upper portion of the support bracket 10, and the swing gear 11 is swung by a steering electric motor 13 via a reduction gear 14. A battery 15 is mounted inside the vehicle body 3. Although not shown, the vehicle base portion 3 has a built-in oil tank for driving a cylinder, which will be described later, a pump, and a pump electric motor, and has a large weight.

The arm body 4 is attached to the vehicle base body 3 via a guide portion 17. The guide portion 17 is fixed to the front surface of the vehicle base portion 3 and has a frame body portion 19 provided with side plates 19A extending forward at both ends, and a guide pipe 20 having the frame body portion 19 with its axial direction horizontal, The guide pipe 20 is provided with a sliding member 23 that can slide.

A notch groove 20A extending in the axial direction is formed on the front surface of the guide pipe 20, while the sliding member 2 is provided.
3 is a shaft body portion 21 and the cutout groove 2 from the shaft body portion 21.
By forming the protrusion 22 that can protrude forward from 0A, rattling when the sliding member 23 slides is prevented.

One end of the sliding member 23 is fixedly attached to the rear frame 4B of the arm body 4, and in this embodiment, one arm body is provided with two sliding shafts vertically separated from each other.

The guide portion 17 has a rod 24A,
Fluid pressure and double-acting type cylinders 24 and 25 are arranged in parallel vertically with the projecting direction of 25A different, and each rod is pivotally attached to the rear frame 4B of the arm body 4.

Therefore, the pair of arm bodies 4, 4 can be separated by extending the rods 24A, 25A of the cylinders 24, 25, and the arm bodies 4, 4 can be brought closer by contracting the rods 24A, 25A. You can

It is desirable that the cylinders 24 and 25 supply pressure oil to the hydraulic chambers on the same side at the same time to achieve synchronization.

The arm body 4 has a pair of receiving pieces 6, respectively.
6 is provided. The receiving pieces 6 and 6 are the outer peripheral surface of a cylindrical work 5 which is placed by bringing the arm bodies closer to each other with the central axis oriented at right angles to the longitudinal direction of the arm body 4, and the work 5.
In this embodiment, the upper surfaces 6A are tilted so as to face each other so as to fit into the outer diameter of the work 5 that can enter the gap formed by both sides of the grounding line that grounds and can be handled.

Further, as shown in FIG. 5, the receiving piece 6 is formed with a screw hole 6B on an end surface which can abut against the arm body 4, and in the screw hole 6B, an inward frame 4A of the arm body 4 is formed. By tightening the bolt 29 through the upper and lower two elongated holes 26 and 27 formed in parallel with each other, the receiving piece 6 can be adjusted in position with respect to the longitudinal direction of the arm body 4 and can be fixed without changing the inclination angle. .

Further, the arm body 4 is provided with an elevating wheel 7 which can be elevated and lowered with respect to the arm body. In this embodiment, the lifting wheel 7 can be lifted and lowered with respect to the arm body by fixing the wheel shaft 31 to the front end of the lever 30 that can swing with respect to the arm body 4. The lever 30 is supported by the arm body 4 by a pin 32, and the rear end of the lever 30 is connected to a rod of a cylinder 33 attached to the rear frame 4B.

Therefore, the elevating wheel 7 can be raised with respect to the arm body 4 by extending the rod of the cylinder 33. As a result, as shown in FIG.
Can approach the road surface G.

By contracting the rod of the cylinder 33, the lifting wheel 7 can be lowered with respect to the arm body 4, and as a result, the arm body 4 is separated from the road surface G as shown in FIG. You can

The support member 9 is composed of a projecting piece 18 extending from the lower surface of the vehicle base body 3 to the lower side of the guide section 17, and a projecting shaft 8 projecting and fixed downward from the projecting piece 18. And is provided at both ends of the vehicle base portion 3, respectively.

In the present embodiment, the supporting member 9 is exemplified by one in which the end of the protruding shaft 8 to be grounded is formed in a cone shape to increase the grounding area and ensure the stability. Further, as shown in FIG. 2, the support member 9 has a road surface G and a gap L1 in a state in which the lifting wheel 7 is most lowered with respect to the arm body 4, while the support member 9 has a gap L1 as shown in FIG. When the work 5 is unloaded from the receiving pieces 6, 6 of the arm body 4 and the lifting wheels 7 are raised with respect to the arm body 4, the work body 5 comes into contact with the road surface G and cooperates with the steering vehicle 2 to weight the arm body. It is possible to float the arm body 4 from the road surface G by supporting the.

Further, the elevating wheel 17 can be moved up and down so as to have the road surface G and the gap L2 while the weight of the arm is supported by the supporting member 9 and the steering wheel 2.

Therefore, the arm body 4 is supported only by the guide portion 17, and no reaction force is received from the road surface G. As a result, the arm body 4 is smoothly moved along the guide portion 17. Is possible.

As described above, as a result of increasing the weight of the vehicle base portion 3, the weight center of gravity of the cargo handling vehicle 1 is positioned rearward of the supporting member in the longitudinal direction of the vehicle, so that the supporting member 9 and The steering wheel 2 can support the weight of the arm body.

Next, a description will be given of the work loading work of the cargo handling vehicle 1. By separating the pair of arm bodies 4 and 4 and lowering the lifting wheel 7 with respect to the arm body 4, as shown in FIG. The weight of the vehicle is supported by the lifting wheels 7, 7 and the steering wheel 2, and the vehicle can travel to the work 5.

After positioning on the work 5, a pair of lifting wheels 7,
7 is moved up with respect to the arm body 4 and the receiving piece 6 is lowered with respect to the road surface G to allow the work 5 to enter, and the projecting shaft 8 of the support member 9 contacts the road surface G.

By further raising the lifting wheel 7 with respect to the arm body 4, the lifting wheel 7 floats above the road surface G with a gap L2. As a result, the weight of the arm body is equal to that of the support member 9.
Then, the arm body 4 supported by the steered wheels 2 floats from the road surface, and can be brought close to the work 5 without receiving any external force.

Further, the armature 4 is moved closer to each other to move the receiving piece 6 into the space below the workpiece, and then the lifting wheel 7 is lowered with respect to the arm 4.

As the lifting wheel 7 descends, first, the lifting wheel 7
Comes into contact with the road surface G, and then the support member 9 floats above the road surface G.

Further, thereafter, the receiving piece 6 and the work 5 come into contact with each other, and the lifting wheel 7 is further lifted so that the work 5 is levitated from the road surface G and the support member 9 is moved to the road surface G as shown in FIG.
Can be floated across the gap L1. The unloading work of the work 5 is the reverse of the loading operation described above.

Next, another embodiment of the present invention will be described with reference to FIG. This cargo handling vehicle is configured by fixing an outer cylinder of a small cylinder 35 to an overhanging piece 18 so that the supporting member 9 can expand and contract in the vertical direction.

By making the support member 9 expandable and contractable as described above, it becomes possible to increase the ground minimum height L1 of the cargo handling vehicle with respect to the road surface G shown in FIG. 2, and the support member 9 is provided on the convex portion of the road surface. It can prevent contact.

Depending on the shape of the work 5, the work 5 may be moved even when the lifting wheel 7 is raised most as shown in FIG.
And the receiving piece 6 are in contact with each other, the rod of the cylinder 35 is contracted and the arm body is further lowered to separate the work 5 and the receiving piece 6.

The lifting wheel 7 is pivotally supported by a wheel shaft 31 at a substantially intermediate point of the lever 40, and the tip of the lever 40 is pin 41.
Is pivotally attached to the arm body 4 with the rear end of the cylinder 33.
It is also possible to reduce the amount of vertical movement by connecting to the rod.

Further, the cargo handling vehicle is a manned cargo handling vehicle in which the steering wheel 2 is steered by a handle 37 composed of a post 36 fixed to the support bracket 10 and a grip 39 fixed to the upper portion of the post 36. Can also be adopted.

As means for moving the arm body 4 along the guide portion 17, in addition to the cylinder, sliding members fixed to the arm body are connected to the upper and lower sides of the chain hung in parallel to connect the arm body. The present invention can be modified into various modes such as those that move in opposite directions at the same time.

[0044]

As described above, according to the present invention, by floating the arm body from the road surface, it is possible to smoothly move the arm body and improve workability. Further, by making the support member expandable and contractable, the work unloading work can be further facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view for explaining the operation of the present invention.

FIG. 3 is a side view for explaining the operation of the present invention.

FIG. 4 is a side view showing another embodiment of the present invention.

FIG. 5 is an enlarged diagram showing an engagement member.

FIG. 6 is a diagram for explaining a conventional technique.

[Explanation of symbols]

 1 Cargo Handling Vehicle 2 Steering Vehicle 3 Vehicle Base Part 4 Arm Body 5 Workpiece 6 Receiving Piece 7 Lifting Wheel 9 Supporting Member

Claims (2)

[Claims] 1. A vehicle base body having steered wheels to be steered,
And an arm body protruding in parallel from the vehicle base body, and the arm bodies tilted to the facing side surfaces come close to each other, and the arm body is placed with its central axis oriented at right angles to the longitudinal direction of the arm body. The pair of receiving pieces that enter the gap formed by the outer peripheral surface of the cylindrical work and the road surface on both sides of the grounding line where the work is grounded, and the arm body is lifted up and down with respect to the arm body to lift the arm body. Is a cargo handling vehicle provided with lifting wheels for lifting a work on the receiving piece by contacting the road surface and cooperating with the steered wheels in a state where the work is unloaded from the arm body and the lifting wheels are raised. And a supporting member for floating the arm body from the road surface by supporting the weight of the arm body. 2. The cargo handling vehicle according to claim 1, wherein the support member is vertically expandable and contractable.