CN209369702U - A telescopic folding fence ladder - Google Patents

Abstract

The utility model discloses a telescopic folding fence ladder, which has two working states of opening and folding, and comprises a herringbone ladder, a telescopic folding fence mechanism, a working platform, telescopic legs and folding trundles, wherein the telescopic folding fence mechanism, the working platform, the telescopic legs and the folding trundles are sequentially arranged on the herringbone ladder from top to bottom; the herringbone ladder comprises two first ladder bars, two second ladder bars and a plurality of steps which are respectively arranged between the two first ladder bars and between the two second ladder bars, and the upper parts of the first ladder bars are provided with connecting seats hinged with the second ladder bars; the working platform is arranged between the two first ladder bars and the two second ladder bars, and the telescopic folding fence mechanism is arranged above the working platform; the lower parts of the two first ladder bars and the two second ladder bars are inserted with telescopic feet with adjustable length, and the folding caster wheels are arranged on the telescopic feet. The utility model discloses a flexible rail mechanism of converting into makes main railing, secondary railing, bar and horizontal door flexible folding receipts receive the form of integrative linkage for whole ladder can receive the receipts and fold, be convenient for storage and transport.

Description

A telescopic folding fence ladder

technical field

The utility model relates to the technical field of ladders, in particular to a telescopic foldable fence ladder.

Background technique

Fence ladders are usually used for high-altitude operations. The platform above the fence ladder can be used for people to stand on, but the existing platforms have poor protection, and operators often shake or even fall due to unstable center of gravity when taking items, causing safety accidents. , the safety is generally not high; in addition, the fence and ladder bars on the existing fence ladder platform are fixed to death, which makes it inconvenient to fold the ladder.

Utility model content

The technical problem solved by the utility model is to provide a telescopic and foldable fence ladder to solve the problems raised in the above-mentioned background technology in view of the defects in the above-mentioned prior art.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the utility model is as follows: a telescopic foldable fence ladder, which has two working states of opening and folding, including a ladder and a telescopic foldable ladder arranged sequentially on the ladder from top to bottom. Fence mechanism, working platform, telescopic feet and folding casters; the ladder includes two first ladder bars, two second ladder bars and a plurality of two first ladder bars and two second ladder bars respectively The step between the ladder bars, the upper part of the first ladder bar is provided with a connecting seat hinged with the second ladder bar; the working platform is arranged between the two first ladder bars and the two second ladder bars, the The telescopic folding fence mechanism is arranged above the working platform; a telescopic foot with adjustable length is inserted in the lower part of the two first ladder bars and the two second ladder bars, and the folding casters are arranged on the telescopic legs.

As a further elaboration to the above-mentioned technical scheme:

In the above technical solution, the telescopic foldable fence mechanism includes a main railing, a secondary railing, a handrail bar and a handle door, the main railing is connected to the tops of the two first ladder bars in rotation, and the two ends of the main railing are respectively provided with A handrail, the handle door is arranged between two handrails, a sleeve is arranged in the middle of the first ladder bar, the handrail is vertically arranged between the main railing and the sleeve, and the handrail is The upper end is pivotally connected to the main railing, and the lower end of the handrail is provided with a jumping bead spring fixedly connected to the sleeve in the open state, and the lower end of the handrail slides along the sleeve in the folded state; the secondary railing is located below the main railing , the two ends of the secondary railing are pivotally connected to the connecting seats of the two first ladder bars respectively, the main railing is provided with a connecting belt that drives the secondary railing to rotate, and the two ends of the connecting strap are fixed on the main railing and the secondary railing respectively. on the railing.

In the above technical solution, the two ends of the handle door are respectively provided with a rotary damper and an inverted U-shaped snap ring, the rotary damper and the snap ring are respectively arranged on two handrail rods, It is pivotally connected with the rotary damper, and the other end of the handle door is snapped into the clasp, and the bayonet of the clasp ring is provided with a clip that restricts the handle door from falling off; a storage table is provided above the clasp ring.

In the above technical solution, the workbench includes a support plate for people to stand on, a stopper for locking the open state of the first ladder bar and the second ladder bar, pads and hooks, and the support plate is pivotally connected between two Between the first ladder bars, the spacer is arranged at the lower end of the support plate, and the spacer is in the open state against the uppermost step of the two second ladder bars, and one end of the limiter is connected to the step pivot. Then, the other end of the limiter is movably connected with the side wall of the support plate, and an L-shaped hole is formed at the position where the limiter is connected with the support plate.

In the above technical solution, installation shells are provided on the first ladder bar and the second ladder bar; a locking assembly for positioning telescopic legs is provided in the installation shell, and the locking assembly includes a locking seat and a twist Spring, the middle part of the locking seat is provided with a shaft connected to the installation shell, the torsion spring is sleeved on the shaft, the locking seat is respectively provided with a handle and a locking column on both sides of the shaft, and the telescopic foot At least two positioning holes are arranged on the top, and the locking column is inserted into one of the positioning holes to fix the telescopic foot.

In the above technical solution, the first ladder bar and the second ladder bar are both provided with chute, the telescopic feet are inserted in the chute, the inner wall of the chute is provided with a convex line protruding inward, the The outer wall of the telescopic foot is formed with a guide groove corresponding to the raised strip, and the said guide groove is engaged with the raised strip to limit the movement of the telescopic foot only along the length direction of the ladder bar.

In the above technical solution, the upper end of the telescopic foot is provided with a limit block, and the lower end of the telescopic foot is provided with an anti-slip rubber foot.

In the above technical solution, the folding caster includes a mounting frame arranged between the telescopic feet and the anti-skid rubber feet, a folding seat, a spring and a pulley, the folding seat is provided with a rotating shaft rotatably connected to the mounting frame, and the spring Sleeved on one end of the rotating shaft, the rotating shaft is provided with an annular flange at the end close to the spring, and the two ends of the spring are respectively against the inner wall of the mounting frame and the flange, and the folding seat is provided with a U-shaped mounting part , the pulley is arranged in the U-shaped installation part.

In the above technical solution, the length of the first ladder bar is greater than the length of the second ladder bar.

In the above technical solution, a tool rack is provided on the upper part of the first ladder bar, and the tool rack is fixed on the inner wall of the chute.

Compared with the prior art, the beneficial effect of the utility model is that the utility model makes the main railing, the secondary railing, the handrail bar and the handle door into a form of telescopic folding and folding integrated linkage through the telescopic folding fence mechanism, so that the whole ladder can be It can be folded and folded for easy storage and transportation; the self-locking horizontal handle door is easy to operate, and it will not be loosened by the clip after it is closed. The damper sets the angle of opening and closing the door to a 90° opening and closing range to prevent accidents caused by improper opening and closing of the door; the ladder is locked when the ladder is opened to use through the limiter to ensure safe use; the ladder can be folded after unlocking; The large working platform of 400x520mm makes it more comfortable and safe for the staff to stand on; the telescopic and adjustable telescopic feet enable the ladder to be adjusted to an appropriate height according to the requirements of use (250mm adjustment range), and it is also suitable for uneven ground or steps; The practicability of the ladder; the non-slip rubber feet have a non-slip effect, so that the ladder is firmly attached to the ground; through the folding casters, the folding casters are opened to facilitate the movement of the ladder, and it is easy to store after being folded; through the tool rack, it is used for temporary use by the staff Insert a screwdriver to improve practicality.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the utility model open state;

Fig. 2 is one of the schematic diagrams of the enlarged structure of the locking assembly;

Fig. 3 is the second schematic diagram of the enlarged structure of the locking assembly;

Fig. 4 is a schematic structural diagram of the folding caster in an open state;

Fig. 5 is a side view structural schematic diagram of the utility model in an open state;

Fig. 6 is a schematic diagram of the three-dimensional structure of the folded state of the utility model;

Fig. 7 is a front structural schematic view of the folded state of the utility model.

In the figure: 11, main railing; 12, connecting belt; 13, secondary railing; 14, handrail; 15, jumping bead spring; 2, horizontal handle door; 21, rotary damper; 22, storage table; 23, snap ring; 24. Clip bar; 3. Support plate; 31. Pad block; 32. Limiter; 33. L-shaped hole; 4. Pulley; 41. Folding seat; 42. Installation part; 43. Flange; 44. Shaft ;45, spring; 46, mounting frame; 5, telescopic foot; 51, guide groove; 52, positioning hole; 53, anti-skid rubber foot; 54, limit block; 61, handle; 62, shaft; 64, locking seat; 65, torsion spring; 100, the first ladder bar; 101, stepping; 102, tool rack; 103, connecting seat; 104, sleeve pipe;

Detailed ways

Below in conjunction with accompanying drawing 1 to accompanying drawing 7 the utility model is described in further detail.

The embodiments described by referring to the figures are exemplary and are intended to explain the present application and should not be construed as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the application. In addition, 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, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, "several" and "plurality" mean two or more, unless otherwise specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations. In this application, unless otherwise expressly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, or include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "under" and "under" the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

As shown in Figure 1-7, a telescopic foldable fence ladder has two working states of open and folded, including a ladder and a telescopic foldable fence mechanism, a working platform, and a telescopic fence set on the ladder from top to bottom. Pin 5 and folding caster; Herringbone ladder comprises two first ladder bars 100, two second ladder bars 200 and a plurality of being respectively arranged between two first ladder bars 100 and between two second ladder bars 200 The step 101 of the first ladder bar 100 is provided with a connecting seat 103 hinged with the second ladder bar 200; It is arranged above the working platform; an adjustable-length telescopic foot 5 is inserted at the bottom of the two first ladder bars 100 and the two second ladder bars 200 , and the folding casters are arranged on the telescopic legs 5 .

The telescopic folding fence mechanism includes a main railing 11, a secondary railing 13, a handrail 14 and a handle door 2, the main railing 11 is connected to the tops of the two first ladder bars 100 in rotation, and a handrail 14 is respectively arranged at both ends of the main railing 11. Handle door 2 is arranged between two handrail bars 14, first ladder bar 100 middle part is provided with sleeve pipe 104, and handrail bar 14 is vertically arranged between main railing 11 and sleeve pipe 104, and the upper end of handrail bar 14 and main railing 11 pivotally connected, the lower end of the handrail bar 14 is provided with a jumping bead spring 15 affixed to the sleeve 104 in the open state, and the lower end of the handrail bar 14 slides along the sleeve tube 104 in the folded state; the secondary railing 13 is located below the main railing 11, and the secondary The two ends of the railing 13 are pivotally connected with the connecting seats 103 of the two first ladder bars 100 respectively, the main railing 11 is provided with a connecting belt 12 which drives the secondary railing 13 to rotate, and the two ends of the connecting strap 12 are fixed on the main railing 11 and the secondary railing respectively. On the railing 13.

The two ends of the handlebar door 2 are respectively provided with a rotary damper 21 and an inverted U-shaped snap ring 23, and the rotary damper 21 and the snap ring 23 are respectively arranged on two handrail bars 14, and one end of the handlebar door 2 is connected to the rotary damper 21. Pivot connection, the other end of the handlebar door 2 is snapped into the clasp 23, and the bayonet of the clasp ring 23 is provided with a clip 24 that limits the handlebar door 2 from falling off;

The workbench includes a support plate 3 for people to stand on, a stopper 32 for locking the open state of the first ladder bar 100 and the second ladder bar 200, spacers 31 and hooks 34, and the support plate 3 is pivotally connected to the two first ladder bars. Between the rods 100, a spacer 31 is arranged at the lower end of the support plate 3, and the spacer 31 abuts against the uppermost step 101 of the two second ladder bars 200 in the open state, and one end of the stopper 32 is pivotally connected to the step 101 , the other end of the limiter 32 is movably connected with the side wall of the support plate 3 , and the limiter 32 is opened with an L-shaped hole 33 at the position connected to the support plate 3 .

Both the first ladder bar 100 and the second ladder bar 200 are provided with a mounting shell 106; the locking assembly for positioning the telescopic foot 5 is arranged in the mounting shell 106, and the locking assembly includes a locking seat 64 and a torsion spring 65, and the locking seat The middle part of 64 is provided with the shaft 62 connected with the installation shell 106, the torsion spring 65 is sleeved on the shaft 62, the locking seat 64 is respectively provided with a handle 61 and a locking post 63 on both sides of the shaft 62, and the telescopic foot 5 is provided with There are at least two positioning holes 52 , and the locking column 63 is inserted into one of the positioning holes 52 to fix the telescopic foot 5 . With the axis 62 as the center, the rotation of the locking column 63 is controlled by the handle 61, and the two ends of the torsion spring 65 respectively abut against the inner wall of the installation shell 106 and the inner wall of the locking seat 64, so that the locking column 63 can be stably snapped in In the positioning hole 52, it will not be easily loosened. Steps 101 of the ladder are arranged between the installation shells 106 .

Both the first ladder bar 100 and the second ladder bar 200 are provided with a chute, the telescopic foot 5 is inserted in the chute, the inner wall of the chute protrudes inwardly and is provided with a convex line, and the outer wall of the telescopic foot 5 is formed with a convex line. The guide groove 51 corresponding to the bar, the guide groove 51 is clamped with the raised bar to limit the telescopic foot 5 to move only along the length direction of the ladder bar.

The upper end of the telescopic foot 5 is provided with a limit block 54, and the locking column 63 resists the limit block 54 so that the telescopic foot 5 cannot be separated from the first ladder bar 100 or the second ladder bar 200, and the lower end of the telescopic foot 5 is provided with anti-skid rubber The feet 53 have an anti-skid effect, so that the ladder can be firmly attached to the ground.

Folding caster comprises installation frame 46, folding seat 41, spring 45 and pulley 4 that are arranged between telescoping foot 5 and anti-skid rubber foot 53, and folding seat 41 is provided with the rotating shaft 44 that is connected with mounting frame 46 rotations, and spring 45 sets At one end of the rotating shaft 44, the rotating shaft 44 is provided with an annular flange 43 at an end close to the spring 45, and the two ends of the spring 45 respectively abut against the inner wall of the mounting frame 46 and the flange 43, and the folding seat 41 is provided with a U-shaped mounting portion 42 , the pulley 4 is arranged in the U-shaped installation part 42 .

The length of the first ladder bar 100 is greater than the length of the second ladder bar 200 .

The upper part of the first ladder bar 100 is provided with a tool rack 102, and the tool rack 102 is fixed on the inner wall of the chute.

The telescopic folding fence mechanism of the utility model makes the main railing 11, the secondary railing 13, the handrail 14 and the horizontal door 2 into a form of telescopic folding and folding, so that the whole ladder can be folded and folded, which is convenient for storage and transportation; self-locking The handle door 2 is easy to operate. After being closed, it will be self-locked by the clip 24 and will not be released. After opening, it will slowly fall to a certain position through the rotary damper 21 and stop automatically. It will not hit people, and the rotary damper 21 will open and close the angle Set the door opening and closing range at 90° to prevent accidents caused by improper opening and closing of the door; when the ladder is opened to use, the limiter 32 is used to lock the ladder to ensure safe use; the ladder can be folded after unlocking; the large working platform of 400x520mm, Make the staff stand more comfortably and safely; the telescopic and adjustable telescopic feet 5 allow the ladder to be adjusted to an appropriate height (250mm adjustment range) according to the use requirements, and can also be applied to uneven ground or steps; improve the practicability of the ladder; The anti-slip rubber feet 53 have an anti-slip effect, so that the ladder is firmly attached to the ground; by folding the casters, the folded casters are opened to facilitate the movement and handling of the ladder, and are convenient for storage after being folded; the tool rack 102 is used for temporarily inserting screwdrivers by the staff , improve practicality.

The above is not any limitation to the technical scope of the present utility model, and any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still belong to the scope of the technical solution of the present utility model.

Claims (10)

1. the flexible equivalent fence ladder of one kind, has and opens and convert into two working conditions, it is characterised in that: including double ladder and Flexible equivalent rail mechanism, workbench, telescopic leg and the folding castor being successively set on double ladder from top to bottom；The people Word ladder includes two the first ladder bars, two the second ladder bars and multiple is separately positioned between two the first ladder bars and two second Marking time between ladder bars, first ladder bars top are provided with the attachment base hinged with the second ladder bars；The workbench setting Between two the first ladder bars and two the second ladder bars, the flexible equivalent rail mechanism is arranged above workbench；It is described The lower part of two the first ladder bars and two the second ladder bars plugs the telescopic leg of an adjustable length, and the folding castor setting exists In telescopic leg.

2. a kind of flexible equivalent fence ladder according to claim 1, it is characterised in that, the flexible equivalent rail mechanism packet Include main railing, secondary railing, handrail and cross handle door, the top rotation connection of the main railing and two the first ladder bars, the master A handrail is respectively arranged in the both ends of railing, and the cross handle door is arranged between two handrails, setting in the middle part of first ladder bars There is casing, the handrail is vertically arranged between main railing and casing, and the upper end of the handrail and main railing are pivotally connected, described The lower end of handrail is provided in opening state and the affixed jump pearl spring of casing, and the lower end of the handrail is on folded position edge Cannula slide；The secondary railing is located at below main railing, the both ends of the secondary railing attachment base with two the first ladder bars respectively Pivot joint, the main railing, which is provided with, drives time connecting band of railing rotation, and the both ends of the connecting band are separately fixed at main railing On secondary railing.

3. a kind of flexible equivalent fence ladder according to claim 2, it is characterised in that, the both ends of the cross handle door are set respectively It is equipped with rotary damper and inverted u-shaped snap ring, the rotary damper and snap ring are separately positioned in two handrails, the cross One end of door and rotary damper are pivotally connected, the other end clamping of the cross handle door is set at the bayonet of the snap ring in snap ring It is equipped with the strip that limitation cross handle door is not fallen off；Articles holding table is provided with above the snap ring.

4. a kind of flexible equivalent fence ladder according to claim 1, it is characterised in that, the workbench includes standing for people Support plate, lock limiter, cushion block and the grab of the first ladder bars and the second ladder bars opening state, the support plate is articulated in two Between a first ladder bars, the lower end of support plate is arranged in the cushion block, and the cushion block is resisted against two second ladders in opening state On bar top layer marks time, one end of the limiter and the pivot joint of marking time, the other end of the limiter and the side wall of support plate It is flexibly connected, the limiter is opened in the position connecting with support plate and is formed with a L font hole.

5. a kind of flexible equivalent fence ladder according to claim 1, it is characterised in that, first ladder bars and the second ladder bars On be provided with mounting shell；The locking assembly of positioning telescopic leg is provided in the mounting shell, the locking assembly includes locking Seat and torsional spring, the locking bed middle part are provided with the axis connecting with mounting shell, and the torsional spring is set on axis, and the locking bed exists The two sides of axis are respectively arranged with handle and locking post, and at least two location holes are provided in the telescopic leg, and the locking post is inserted It is located in wherein a positioning hole to fix telescopic leg.

6. a kind of flexible equivalent fence ladder according to claim 5, it is characterised in that, first ladder bars and the second ladder bars It is inside provided with sliding slot, the telescopic leg is plugged in sliding slot, and the sliding slot inner wall is inwardly equipped with raised line, the telescopic leg It is opened on outer wall and is formed with guide groove corresponding with raised line, the guide groove and raised line are clamped to limit telescopic leg only along the length side of ladder bars To movement.

7. a kind of flexible equivalent fence ladder according to claim 5, it is characterised in that, the upper end of the telescopic leg is provided with Limited block, the lower end of the telescopic leg are arranged with skid-proof rubber foot.

8. a kind of flexible equivalent fence ladder according to claim 7, it is characterised in that, the folding castor includes that setting exists Mounting rack, foldable base, spring and pulley between telescopic leg and skid-proof rubber foot, are provided in the foldable base and mounting rack rotates The shaft of connection, the spring are set in one end of shaft, and the shaft is provided with annular nib in one end close to spring, institute The both ends for stating spring are born against on mounting rack inner wall and chimb, and U-shaped mounting portion, the pulley are provided in the foldable base It is arranged in U-shaped mounting portion.

9. a kind of flexible equivalent fence ladder according to claim 1, it is characterised in that, the length of first ladder bars is greater than The length of second ladder bars.

10. a kind of flexible equivalent fence ladder according to claim 6, it is characterised in that, the top of first ladder bars is set It is equipped with tool rack, the tool rack is fixed on the inner wall of sliding slot.