CN210710537U - Elevating platform device - Google Patents

Abstract

The utility model provides a lifting platform device, which comprises at least two scissor-type lifting platforms, wherein each scissor-type lifting platform is provided with an anti-falling oil cylinder; the scissor-type lifting platform is provided with a first vertical plate and a second vertical plate, and the scissor-type lifting platform can be driven to ascend or descend by changing the distance between the first vertical plate and the second vertical plate; a piston rod in the anti-falling oil cylinder is fixedly connected to a second vertical plate, and a cylinder body is fixedly connected to a first vertical plate; the elevating platform device further comprises: the communication module is electrically connected with the electromagnetic valve and the pressure switch in each scissor-type lifting platform; here, when a certain scissor lift platform falls, the anti-falling oil cylinder can not only prevent the scissor lift platform, but also inform other scissor lift platforms of the anti-falling oil cylinder, so that the rest anti-falling oil cylinders can also prevent the falling of the lift platform.

Description

Elevating platform device

Technical Field

The utility model relates to a jacking equipment technical field especially relates to a lifting platform device.

Background

A scissor-type lifting platform is a hoisting machine for vertically conveying people or objects, is mainly used for conveying goods among height differences of a production line, is often provided with various plane conveying devices, is used as a connecting device of conveying lines with different heights, and is widely applied to high-altitude installation, maintenance and other operations.

In practical use, it may be necessary to install a plurality of scissor lift tables, and a plate-shaped object is used for connection between support tables of the plurality of scissor lift tables, so that the working space may be increased; it will be appreciated that if a scissor lift should fail, the plate may tilt and a person or object above the plate may slide off, which is dangerous.

Therefore, it is an urgent problem to design a lifting table device capable of effectively dealing with the above-mentioned situation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lifting platform device.

In order to achieve one of the purposes of the utility model, the utility model provides an embodiment of a lifting platform device, which comprises at least two scissor-type lifting platforms, wherein each scissor-type lifting platform is provided with an anti-falling oil cylinder; the scissor-type lifting platform is provided with a first vertical plate and a second vertical plate, and the scissor-type lifting platform can be driven to do ascending motion or descending motion by the change of the distance between the first vertical plate and the second vertical plate; the hydro-cylinder of preventing falling includes: a cylinder body, which contains a piston cavity therein; a piston located within the piston cavity and dividing the piston cavity into a first chamber and a second chamber; the piston rod penetrates through the piston cavity along the linear direction of the reciprocating motion of the piston and is fixedly connected to the piston; the two ends of the pipeline are respectively communicated with the first cavity and the second cavity; the electromagnetic valve, the explosion-proof valve and the pressure switch are connected in series into the pipeline; a piston rod in the anti-falling oil cylinder is fixedly connected to a second vertical plate, and a cylinder body is fixedly connected to a first vertical plate; the elevating platform device further comprises: and the communication module is electrically connected with the electromagnetic valve and the pressure switch in each scissor type lifting platform.

As a further improvement of an embodiment of the present invention, the scissor lift platform comprises: a base and a support platform; the scissors arm groups comprise two scissors arms which are hinged into an X shape, the scissors arms are divided into a left side part and a right side part by the hinged parts on the scissors arms, and the at least two scissors arm groups are oppositely arranged between the base and the supporting platform; the cross rod groups are two movable rods which are arranged in a cross mode; the first vertical plate is arranged on the left side of the hinge joint of the first scissor arm group and is respectively and movably connected with the left side parts of the two scissor arms in the first scissor arm group through the first cross rod group; the second vertical plate is arranged on the right side of the hinged position of the first scissor arm set and is movably connected with the right side parts of the two scissor arms in the first scissor arm set through the second cross rod set.

As a further improvement of an embodiment of the present invention, the middle positions of the two scissor arms in each scissor arm set are hinged to each other.

As a further improvement of an embodiment of the present invention, the first scissor arm group is a first scissor arm and a second scissor arm that are hinged to each other in an X-shape, the second scissor arm group is a third scissor arm and a fourth scissor arm that are hinged to each other in an X-shape, the first scissor arm and the third scissor arm are disposed opposite to each other, and the second scissor arm and the fourth scissor arm are disposed opposite to each other; a first connecting rod is fixedly connected between the left side parts of the first and third scissor arms, a third connecting rod is fixedly connected between the right side parts of the first and third scissor arms, a second connecting rod is fixedly connected between the left side parts of the second and fourth scissor arms, and a fourth connecting rod is fixedly connected between the right side parts of the second and fourth scissor arms; two right end parts of the first cross rod group are respectively hinged with the first connecting rod and the second connecting rod, and two left end parts of the second cross rod group are respectively hinged with the third connecting rod and the fourth connecting rod.

As an embodiment of the present invention, the first riser is further connected to the first and second connecting rods through the third cross rod assembly, and the second riser is connected to the third and fourth connecting rods through the fourth cross rod assembly.

As a further improvement of an embodiment of the present invention, the front side of the first riser is connected to the first cross bar group, and the rear side is connected to the third cross bar group; the front side of the second riser is connected to the second set of cross bars and the back side is connected to the fourth set of cross bars.

As a further improvement of an embodiment of the present invention, the upper end and the lower end of the front side of the first vertical plate are respectively hinged with the two left end portions of the first cross bar group, and the upper end and the lower end of the front side of the second vertical plate are respectively hinged with the two right end portions of the second cross bar group; the upper end and the lower end of the rear side of the first vertical plate are respectively hinged with two left end parts of the third cross rod group, and the upper end and the lower end of the rear side of the second vertical plate are respectively hinged with two right end parts of the fourth cross rod group.

As a further improvement of an embodiment of the present invention, the lower ends of the first and third scissor arms are slidably connected to the base, and the upper ends of the first and third scissor arms are hinged to the supporting platform; the lower ends of the second and fourth scissor arms are hinged to the base, and the upper ends of the second and fourth scissor arms are connected to the supporting platform in a sliding mode.

As a further improvement of an embodiment of the present invention, the lower ends of the first and third scissor arms are provided with first rollers, and the upper side surface of the base is provided with a chute for the first rollers to slide left and right; the upper ends of the second and fourth scissor arms are provided with second rollers, and the lower side surface of the supporting table is provided with a sliding groove for the second rollers to slide left and right.

As a further improvement of an embodiment of the present invention, the present invention further includes: and the driving device is used for providing power for the at least two scissor type lifting platforms.

Compared with the prior art, the utility model discloses a technological effect lies in: the utility model provides a lifting platform device, when certain fork elevating platform that cuts takes place to fall, this fall-proof hydro-cylinder not only can prevent this fork elevating platform that cuts, but also can inform other anti-falling hydro-cylinders of cutting in the fork elevating platform to all the other hydro-cylinders of falling that fall also can prevent falling of elevating platform.

Drawings

Fig. 1A and 1B are schematic structural views of the anti-falling cylinder in the embodiment;

fig. 2A is a schematic perspective view of the elevating platform device in this embodiment;

fig. 2B is a schematic structural view of the scissor lift in the present embodiment;

fig. 2C is a front view of the scissor lift in this embodiment;

fig. 2D is a rear view of the scissor lift in this embodiment.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

Terms such as "upper," "above," "lower," "below," and the like, used herein to denote relative spatial positions, are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Also, it should be understood that, although the terms first, second, etc. may be used herein to describe various elements or structures, these described elements should not be limited by these terms. These terms are only used to distinguish these descriptive objects from one another. For example, a first riser may be referred to as a second riser, and similarly a second riser may also be referred to as a first riser, without departing from the scope of the present application.

The embodiment of the utility model provides a lifting platform device, as shown in fig. 2A, comprising at least two scissor-type lifting platforms 2, wherein each scissor-type lifting platform 2 is provided with an anti-falling oil cylinder 21; here, in actual use, one plate-like object may be laid on the support bases 23 of the at least two scissor lift tables 2, so that the working area may be enlarged, but in actual use, if a certain scissor lift table 2 falls, it is very dangerous.

The scissor type lifting platform 2 is provided with a first vertical plate 261 and a second vertical plate 262, and the change of the distance between the first vertical plate and the second vertical plate can drive the scissor type lifting platform 2 to do ascending movement or descending movement;

here, the first and second risers can be used as a driving end, and the driving device can be used to draw close to the first and second risers or to be far away from the first and second risers, so as to drive the supporting platform 23 in the scissor lift 2 to do ascending motion or descending motion, otherwise, when the supporting platform 23 does ascending motion or descending motion, the supporting platform can be drawn close to or far away from the first and second risers, and further, when the supporting platform 23 falls (i.e. does fast descending motion), if the first and second risers are stopped to be far away from or close to each other, the falling of the supporting platform can be effectively stopped.

The hydro-cylinder of preventing falling includes: a cylinder 211 in which a piston chamber 212 is accommodated; a piston 214 located within the piston cavity 212, the piston 214 dividing the piston cavity 212 into a first chamber 2121 and a second chamber 2122; a piston rod 213 which penetrates the piston chamber 212 along a linear direction of reciprocation of the piston 214 and is fixedly connected to the piston 214; a duct 215 having both ends communicating with the first and second chambers, respectively; a solenoid valve 216, an explosion-proof valve 217 and a pressure switch 218 connected in series in the pipe 215; here, it should be noted that, when the piston rod 213 is pulled to the left as shown in fig. 1A and 1B, the piston 214 moves to the left, the mechanical oil in the first chamber 2121 is squeezed out and flows into the pipe 215, the explosion-proof valve 217 is disposed in the pipe, and when the flow rate of the mechanical oil exceeds a preset value, the explosion-proof valve 217 is closed, the mechanical oil cannot flow along the pipe 215, and it can be understood that the piston rod 213 cannot move any further. Alternatively, when a right pulling force is applied to the piston rod 213 and the piston 214 moves to the right, the mechanical oil in the second chamber 2122 is squeezed out and flows into the pipe 215, and the explosion-proof valve 217 is disposed in the pipe, and when the flow rate of the mechanical oil exceeds a preset value and the explosion-proof valve 217 is closed, the mechanical oil cannot flow along the pipe 215, and it can be understood that the piston rod 213 cannot move any further.

Here, a solenoid valve 216 is further provided in the pipe 215, and it is understood that when the solenoid valve 216 is opened, the mechanical oil can flow along the pipe 215, and the piston rod 213 can move leftward or rightward; conversely, when the solenoid valve 216 is closed, the mechanical oil cannot flow along the pipe 215, and the piston rod 213 cannot move to the left or right.

Here, a pressure switch 218 is further provided in the pipe 215, and the pressure switch 218 can acquire the pressure of the machine oil. Optionally, the pressure switch 218 may adopt a high-precision and high-stability pressure sensor and a transmission circuit, and then implement detection, display, alarm and control signal output of the mechanical oil pressure signal through a special CPU (Central Processing Unit) modularized signal Processing technology.

Wherein, a piston rod 213 in the anti-falling oil cylinder is fixedly connected to a second vertical plate 262, and a cylinder body 211 is fixedly connected to a first vertical plate 261; the elevating platform device further comprises: a communication module electrically connected between the solenoid valve 216 and the pressure switch 218 in each scissor lift 2.

Here, the falling movement of the support platform 23 will cause the first and second risers to move away from or towards each other, and thus the piston rod 213 to move relative to the cylinder body 211, and as can be seen from the above analysis, the fall prevention cylinder 21 can prevent the support platform 23 from continuing to fall. Here, the anti-falling cylinders 21 are installed in each of the plurality of scissor lift tables 2, when a certain scissor lift table 2 falls, the pressure of the mechanical oil in the pipeline 215 is gradually increased, the anti-falling cylinder 21 in the scissor lift table 2 can not only prevent the scissor lift table 2 where the certain scissor lift table is located from falling, but also the pressure switch 218 in the scissor lift table 2 can detect the pressure of the mechanical oil in the pipeline 215 and send the pressure to the electromagnetic valves 216 (through the communication module) in the remaining scissor lift tables 2, so that the electromagnetic valves 216 in the anti-falling cylinders 21 in the remaining scissor lift tables 2 can be rapidly closed, and the support tables 23 in the remaining scissor lift tables 2 can also stop falling. Thereby improving the safety of the elevating platform device.

In this embodiment, the scissor lift platform includes: a base 22 and a support table 23; at least two scissor arm sets 25, wherein the scissor arm sets 25 comprise two scissor arms hinged to each other in an X shape, the scissor arms are divided into a left side part and a right side part by hinges thereon, and the at least two scissor arm sets 25 are oppositely arranged between the base 22 and the support table 23; here, in one scissor-arm set 25, two scissor arms are hinged to each other in an X-shape by a hinge means (e.g., a hinge shaft, etc.) at a position called a hinge, and it is understood that in one scissor arm, a portion located on the left side of the hinge is called a left side portion, and a portion located on the right side of the hinge is called a right side portion.

The cross rod groups are two movable rods which are arranged in a cross mode; the first vertical plate 261 is arranged on the left side of the hinge joint of the first scissor arm group 25A and is movably connected with the left sides of the two scissor arms in the first scissor arm group 25A through the first cross rod group 27A; and the second vertical plate 262 is arranged on the right side of the hinged part of the first scissor arm group 25A and is movably connected with the right side parts of the two scissor arms in the first scissor arm group 25A through the second cross rod group 27B. Here, as shown in fig. 2A and 2B, when the first and second risers are close to each other in the left-right direction, the support table 23 is moved up by the first and second cross bar groups; in the left-right direction, when the first and second risers are away from each other, the support platform 23 is moved downward by the first and second cross bar sets, and when the first and second risers are prevented from moving away from each other, the support platform 23 can be prevented from moving downward, and it can be understood that the fall prevention cylinder 21 can perform such a function.

In this embodiment, the two scissor arms of each scissor arm set 25 are hinged to each other at intermediate positions. Here, as shown in fig. 2A and 2B, the width of the middle portion of the scissor arm is the widest, and the width decreases toward both ends thereof.

In this embodiment, the first scissor arm group 25A is a first scissor arm and a second scissor arm that are hinged to each other in an X shape, the second scissor arm group 25B is a third scissor arm and a fourth scissor arm that are hinged to each other in an X shape, the first scissor arm and the third scissor arm are arranged oppositely, and the second scissor arm and the fourth scissor arm are arranged oppositely; a first connecting rod 281 is fixedly connected between the left sides of the first and third scissor arms, a third connecting rod 283 is fixedly connected between the right sides of the first and third scissor arms, a second connecting rod 282 is fixedly connected between the left sides of the second and fourth scissor arms, and a fourth connecting rod 284 is fixedly connected between the right sides of the second and fourth scissor arms; the two right ends of the first cross bar set 27A are hinged with the first and second connecting bars respectively, and the two left ends of the second cross bar set 27B are hinged with the third and fourth connecting bars respectively.

As shown in fig. 2B and 2C, the first crossbar group 27A includes: a first movable bar 271 and a second movable bar 272, the first and second movable bars being arranged in an X-shape in a crossing manner; first scissor-arm set 25A includes: a first scissor arm 251 and a second scissor arm 252, the first and second scissor arms being hinged to each other. An upper end of the first riser 261 is hinged to a first end of the first movable bar 271, a second end of the first movable bar 271 is hinged to the first connecting bar 281, a lower end of the first riser 261 is hinged to a first end of the second movable bar 272, and a second end of the second movable bar 272 is hinged to the second connecting bar 282.

As shown in fig. 2B and 2C, the second crossbar group 27B includes: a third movable bar 273 and a fourth movable bar 274, the third and fourth movable bars being arranged to cross each other in an X-shape. The upper end of the second riser 262 is hinged to the first end of the fourth moving bar 274, the second end of the fourth moving bar 274 is hinged to the fourth connecting bar 284, the lower end of the second riser 262 is hinged to the first end of the third moving bar 273, and the second end of the third moving bar 273 is hinged to the third connecting bar 283.

In this embodiment, as shown in fig. 2D, the first vertical plate 261 is further movably connected to the first and second connecting rods through the third cross rod group 27C, and the second vertical plate 262 is movably connected to the third and fourth connecting rods through the fourth cross rod group 27D.

As shown in fig. 2B and 2D, the third crossbar group 27C includes: a fifth movable bar 275 and a sixth movable bar 276, the fifth and sixth movable bars being arranged to cross each other in an X-shape; an upper end of the first riser 261 is hinged to a first end of the fifth movable bar 275, a second end of the fifth movable bar 275 is hinged to the first connecting bar 281, a lower end of the first riser 261 is hinged to a first end of the sixth movable bar 276, and a second end of the sixth movable bar 276 is hinged to the second connecting bar 282.

As shown in fig. 2B and 2D, the fourth crossbar group 27D includes: a seventh movable bar 277 and an eighth movable bar 278, the seventh and eighth movable bars being arranged to cross each other in an X-shape. The upper end of the second riser 262 is hinged to a first end of a seventh moving bar 277, a second end of the seventh moving bar 277 is hinged to a fourth connecting bar 284, the lower end of the second riser 262 is hinged to a first end of an eighth moving bar 278, and a second end of the eighth moving bar 278 is hinged to a third connecting bar 283.

In this embodiment, the front side of the first riser 261 is connected to the first cross bar group 27A, and the rear side is connected to the third cross bar group 27C;

the second riser 262 is connected on a front side to the second cross bar set 27B and on a rear side to the fourth cross bar set 27D.

In this embodiment, the upper end and the lower end of the front side of the first riser 261 are hinged to the two left end portions of the first cross bar group 27A, and the upper end and the lower end of the front side of the second riser 262 are hinged to the two right end portions of the second cross bar group 27B;

the upper end and the lower end of the rear side of the first vertical plate 261 are respectively hinged with the two left end parts of the third cross bar group 27C, and the upper end and the lower end of the rear side of the second vertical plate 262 are respectively hinged with the two right end parts of the fourth cross bar group 27D.

In this embodiment, the lower ends of the first and third scissor arms are slidably connected to the base 22, and the upper ends of the first and third scissor arms are hinged to the support platform 23; the lower ends of the second and fourth scissor arms are hinged to the base 22 and the upper ends of the second and fourth scissor arms are slidably connected to a support table 23. In summary, when the supporting platform 23 moves up or down, the lower ends of the first and third scissor arms and the upper ends of the second and fourth scissor arms slide left and right, while the lower ends of the first and third scissor arms and the lower ends of the second and fourth scissor arms are not moved (i.e., do not slide left and right).

In this embodiment, the lower ends of the first and third scissor arms are provided with a first roller 291, and the upper side of the base 22 is provided with a sliding slot for the first roller 291 to slide left and right;

the upper ends of the second and fourth scissor arms are provided with second rollers 292, and the lower side surface of the support table 23 is provided with a sliding groove for the second rollers 292 to slide left and right.

In this embodiment, the method further includes: a drive device 1 for powering the at least two scissor lift tables 2. Here, as shown in fig. 2A to 2D, the driving device 1 powers the at least two scissor lift tables 2 through a belt, thereby driving the raising or lowering of the support table 23.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. A lifting platform device comprises at least two scissor-type lifting platforms (2), wherein each scissor-type lifting platform (2) is provided with an anti-falling oil cylinder (21); it is characterized in that the preparation method is characterized in that,

the scissor type lifting platform (2) is provided with a first vertical plate (261) and a second vertical plate (262), and the scissor type lifting platform (2) can be driven to move upwards or downwards by changing the distance between the first vertical plate and the second vertical plate;

the hydro-cylinder of preventing falling includes: a cylinder (211) in which a piston chamber (212) is accommodated; a piston (214) located within the piston cavity (212), the piston (214) dividing the piston cavity (212) into a first chamber (2121) and a second chamber (2122); a piston rod (213) penetrating the piston chamber (212) in a linear direction of reciprocation of the piston (214) and fixedly connected to the piston (214); a duct (215) having both ends communicating with the first and second chambers, respectively; a solenoid valve (216), an explosion-proof valve (217) and a pressure switch (218) connected in series in the pipeline (215);

a piston rod (213) in the anti-falling oil cylinder is fixedly connected to a second vertical plate (262), and a cylinder body (211) is fixedly connected to a first vertical plate (261);

the elevating platform device further comprises: and the communication module is electrically connected with the solenoid valve (216) and the pressure switch (218) in each scissor type lifting platform (2).

2. The lift platform apparatus of claim 1, wherein said scissor lift platform comprises:

a base (22) and a support table (23);

at least two scissor arm sets (25), wherein the scissor arm sets (25) comprise two scissor arms which are hinged into an X shape, the scissor arms are divided into a left side part and a right side part by the hinged parts on the scissor arms, and the at least two scissor arm sets (25) are oppositely arranged between the base (22) and the supporting platform (23);

the cross rod groups are two movable rods which are arranged in a cross mode;

the first vertical plate (261) is arranged on the left side of the hinge joint of the first scissor arm group (25A) and is movably connected with the left side parts of the two scissor arms in the first scissor arm group (25A) through the first cross rod group (27A);

and the second vertical plate (262) is arranged on the right side of the hinged part of the first scissor arm group (25A) and is movably connected with the right side parts of the two scissor arms in the first scissor arm group (25A) through a second cross rod group (27B).

3. The elevating platform device as set forth in claim 2, wherein:

the middle positions of the two scissor arms in each scissor arm group (25) are hinged with each other.

4. The elevating platform device as set forth in claim 2, wherein:

the first scissor arm group (25A) is a first scissor arm and a second scissor arm which are mutually hinged into an X shape, the second scissor arm group (25B) is a third scissor arm and a fourth scissor arm which are mutually hinged into an X shape, the first scissor arm and the third scissor arm are oppositely arranged, and the second scissor arm and the fourth scissor arm are oppositely arranged;

a first connecting rod (281) is fixedly connected between the left sides of the first and third scissor arms, a third connecting rod (283) is fixedly connected between the right sides of the first and third scissor arms, a second connecting rod (282) is fixedly connected between the left sides of the second and fourth scissor arms, and a fourth connecting rod (284) is fixedly connected between the right sides of the second and fourth scissor arms;

two right end parts of the first cross rod group (27A) are respectively hinged with the first connecting rod and the second connecting rod, and two left end parts of the second cross rod group (27B) are respectively hinged with the third connecting rod and the fourth connecting rod.

5. The elevating platform device as set forth in claim 4, wherein:

the first vertical plate (261) is also movably connected with the first connecting rod and the second connecting rod respectively through a third cross rod group (27C), and the second vertical plate (262) is movably connected with the third connecting rod and the fourth connecting rod respectively through a fourth cross rod group (27D).

6. The elevating platform device as set forth in claim 5, wherein:

the front side of the first vertical plate (261) is connected to the first cross rod group (27A), and the rear side is connected to the third cross rod group (27C);

the front side of the second riser (262) is connected to the second cross bar set (27B) and the rear side is connected to the fourth cross bar set (27D).

7. The elevating platform device as set forth in claim 6, wherein:

the upper end and the lower end of the front side of the first vertical plate (261) are respectively hinged with the two left end parts of the first cross rod group (27A), and the upper end and the lower end of the front side of the second vertical plate (262) are respectively hinged with the two right end parts of the second cross rod group (27B);

the upper end and the lower end of the rear side of the first vertical plate (261) are respectively hinged with the two left end parts of the third cross rod group (27C), and the upper end and the lower end of the rear side of the second vertical plate (262) are respectively hinged with the two right end parts of the fourth cross rod group (27D).

8. The elevating platform device as set forth in claim 1, wherein:

the lower ends of the first and third scissor arms are connected to a base (22) in a sliding manner, and the upper ends of the first and third scissor arms are hinged to a supporting table (23);

the lower ends of the second and fourth scissor arms are hinged to a base (22), and the upper ends of the second and fourth scissor arms are connected to a supporting platform (23) in a sliding manner.

9. The elevating platform device as set forth in claim 8, wherein:

the lower ends of the first and third scissor arms are provided with a first roller (291), and the upper side surface of the base (22) is provided with a sliding groove for the first roller (291) to slide left and right;

the upper ends of the second scissor arm and the fourth scissor arm are provided with second rollers (292), and the lower side surface of the supporting table (23) is provided with a sliding groove for the second rollers (292) to slide left and right.

10. The lift table apparatus of claim 1, further comprising:

a drive device (1) for providing power for the at least two scissor lift tables (2).

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