A cross-country scissor-type self-propelled aerial work platform

Abstract

An off-road scissor-type self-propelled aerial work platform comprises a scissor frame arranged on a vehicle body and a work platform connected to the top of the scissor frame, wherein the work platform comprises a bottom base body having a concave arc groove, a platform frame moving on the concave arc groove to achieve deflection, and a driving structure arranged on the platform frame for driving the platform frame to move. The present invention can deflect at a certain angle, is effectively suitable for working on a slope, and has the advantages of stable structure, long service life, etc.

Description

Technical Field

[0001] The invention relates to the field of special equipment for aerial work, and more specifically to an off-road scissor-type self-propelled aerial work platform. Background Art

[0002] Self-propelled scissor-type aerial work platforms are widely used special equipment for aerial work. Their wide working platform has a high load-bearing capacity, which makes the aerial work range larger and suitable for multiple people to work at the same time. However, the bottom surface of a general working platform is a fixed plane, which cannot be deflected at a certain angle by itself, and is limited to working on flat ground. In some special environments, such as working on a slope, the working platform is also tilted, which causes great trouble to the workers. For example, a scissor-type aerial work platform disclosed in the patent application number CN201721414317.5. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an off-road scissor-type self-propelled aerial work platform, which can be deflected at a certain angle, is effectively suitable for working on slopes, and has the advantages of stable structure and long service life.

[0004] The specific technical scheme of the present invention is as follows: an off-road scissor-type self-propelled aerial work platform, comprising a scissor frame arranged on a vehicle body and a work platform connected to the top of the scissor frame, characterized in that the work platform comprises a bottom base having a concave arc groove, a platform frame moving on the concave arc groove to achieve deflection, and a driving structure arranged on the platform frame for driving the platform frame to move. In the present application, the driving structure enables the platform frame to move on the concave arc groove to achieve a certain angle of deflection, thereby enabling the platform frame to keep the bottom surface of the footrest level when it is on a slope, which is convenient for workers to work, and the contact method between the platform frame and the concave arc groove can ensure a larger contact area, so that the stability of the entire work platform is better and the service life is long.

[0005] Preferably, the platform frame includes a moving part arranged at the bottom, a foot pedal arranged above the moving part and connected to the moving part through a connecting column, and a fence part connected to the foot pedal, the moving part has a bottom arc-shaped contact surface matching the shape of the concave arc-shaped groove, and the side end of the moving part protrudes beyond the side end of the foot pedal. The fence part is a bracket structure composed of profiles, and the form of the profiles is not limited.

[0006] Preferably, a guide structure for guiding the platform frame is provided on the bottom base; the guide structure includes guide frames symmetrically arranged on both sides of the moving part, and the guide frames are provided with guide slots for limiting the moving part. The movement direction of the platform frame is effectively guaranteed by the guide structure.

[0007] Preferably, the driving structure comprises driving cylinders symmetrically arranged on both sides of the moving part, and the ends of the piston rods of the driving cylinders are provided with rollers which are in rolling contact with the moving part.

[0008] As another preferred embodiment of the driving structure, the driving structure includes a screw rack, screw slides with screw nuts respectively built in on both sides of the moving part, a plurality of driving rods with end rollers connected to each of the screw slides, a screw arranged on the screw rack and cooperating with the screw nut and running across the fence part, a screw guide rod arranged on the screw rack, a driving shaft with a driving bevel gear installed vertically arranged on the foot pedal, and a rotating handle arranged on the driving shaft, and a driven bevel gear meshing with the driving bevel gear is arranged on the screw. The driving structure adopts a purely mechanical structure without any pneumatic, hydraulic or electrical components, has a simple structure, low cost, and low failure rate. Workers can directly operate the rotating handle to realize the forward and reverse rotation of the screw by forward and reverse rotation, thereby controlling the tilting of the two side ends of the platform frame respectively.

[0009] Preferably, the deflection angle of the platform frame is 0-30°.

[0010] When the moving part moves in the concave arc groove for a long time or frequently, it will be worn out and needs to be replaced regularly. Preferably, the fence part and the moving part are detachably connected, so as to ensure the reuse of the fence part while replacing the moving part.

[0011] In summary, the present invention has the following beneficial effects:

[0012] 1. It can deflect at a certain angle, which is effectively suitable for working on slopes, and has the advantages of stable structure and long service life;

[0013] 2. The driving structure adopts a purely mechanical structure without any pneumatic, hydraulic or electrical components. It has a simple structure, low cost and low failure rate. Workers can directly operate the rotating handle to realize the forward and reverse rotation of the screw rod through forward and reverse rotation, and then control the tilting of the two side ends of the platform frame respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the scissor-type aerial work platform in Example 1;

[0015] Figure 2 The structure diagram of the platform frame is shown in FIG.

[0016] Figure 3 The figure is a schematic diagram of the assembly of the platform frame;

[0017] Figure 4 This is a schematic diagram showing the structure of the aerial work platform in Example 2. DETAILED DESCRIPTION

[0018] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0019] Example 1: Figure 1-3 As shown, an off-road scissor-type self-propelled aerial work platform includes a scissor frame 1 arranged on a vehicle body and a work platform 2 connected to the top of the scissor frame 1, wherein the work platform 2 includes a bottom base 22 having a concave arc groove 21, a platform frame 23 that moves on the concave arc groove 21 to achieve deflection, and a driving structure 24 arranged on the platform frame 23 for driving the platform frame 23 to move. Preferably, the deflection angle of the platform frame 23 is 0-30° (the deflection angle refers to the angle at which the platform frame 23 can deflect upward, relative to the horizontal state of the platform frame 23). In the present application, the driving structure 24 allows the platform frame 23 to move on the concave arc groove 21 to achieve a certain angle of deflection, thereby allowing the platform frame 23 to maintain a horizontal bottom surface when the footrest surface is on a slope, which is convenient for workers to work, and the surface-to-surface contact between the platform frame 23 and the concave arc groove 21 can ensure a larger contact area, so that the entire work platform has good stability and a long service life.

[0020] Specifically, the platform frame 23 includes a moving part 231 arranged at the bottom, a foot pedal 230 arranged above the moving part 231 and connected to the moving part 231 through a connecting column 233, and a fence part 232 connected to the foot pedal 230. The fence part 232 is composed of a plurality of profiles such as angle irons, etc. The moving part 231 has a bottom arc-shaped contact surface 2311 that matches the shape of the concave arc groove 21. The side end of the moving part 231 protrudes beyond the side end of the foot pedal 230. The moving part 231 moves on the concave arc groove 21 to achieve a certain angle of deflection, and finally ensures that the foot pedal 230 is level, which is convenient for workers to work on the platform. The fence part 232 is a bracket structure composed of profiles, and the form of the profiles is not limited. Preferably, the fence portion 232 and the movable portion 231 are detachably connected, specifically by means of a stud, a threaded sleeve, or a plug-in connection, so as to ensure the reuse of the fence portion 232 while replacing the movable portion 231.

[0021] The bottom base 22 is provided with a guide structure 25 for guiding the platform frame 23; the guide structure 25 includes guide frames 251 symmetrically arranged on both sides of the moving part 231, and the guide frames 251 are provided with guide slots 2511 on the sides facing the moving part 231. The guide slots 2511 are ring-shaped, that is, the upper slot surface and the lower slot surface of the guide slot 2511 are coaxially arranged, and the moving part 231 is limited in the guide slots 2511. The moving direction of the platform frame 23 is effectively guaranteed by the guide structure 25.

[0022] The driving structure 24 includes driving cylinders symmetrically arranged on both sides of the moving part 231, and the ends of the piston rods thereof are provided with rollers that are in rolling contact with the moving part 231. When the driving structure 24 pushes the moving part 231, the rollers roll on the surface in contact with the moving part 231, and the friction force is small, which is conducive to pushing the movement of the moving part 231. In specific operation, one of the driving cylinders first moves away from the moving part 231, and then the other driving cylinder pushes the moving part 231 until the moving part 231 abuts against the roller of the driving cylinder that was operated first.

[0023] Embodiment 2: Different from embodiment 1, as Figure 4As shown, the driving structure 24 includes a screw frame 241, screw slides 242 with screw nuts respectively built in on both sides of the moving part 231, a plurality of driving rods 243 with end rollers 2431 connected to each of the screw slides 242, a screw 244 arranged on the screw frame 241 and cooperating with the screw nut and running across the fence part 232, a screw guide rod 245 arranged on the screw frame 241, a driving shaft 246 vertically arranged on the foot pedal 230 and equipped with a driving bevel gear 2461, and a rotating handle 247 arranged on the driving shaft 246, and a driven bevel gear 2441 meshing with the driving bevel gear 2461 is arranged on the screw 244. After the driving structure is actually installed, the end roller 2431 and the end of the moving part 231 are in rolling contact. The driving structure adopts a purely mechanical structure without any pneumatic, hydraulic or electrical components. It has a simple structure, low cost and low failure rate. Workers can directly operate the rotating handle 247 to realize the forward and reverse rotation of the screw rod 244 by forward and reverse rotation, thereby controlling the tilting of the two side ends of the platform frame 23 respectively. Specifically, when the rotating handle 247 is rotated, it cooperates with the driving bevel gear (2461) and the driven bevel gear (2441) to rotate the screw rod 244, driving the two screw slides 242 on the screw rod 244 to move synchronously in the same direction. The screw slide 242 on one side gives a tangential pressure to the corresponding side of the moving part 231 through the end roller 2431 on the driving rod 243, so that the moving part 231 moves on the concave arc groove 21, so as to achieve the purpose of tilting the other end of the moving part 231. When the moving part 231 needs to be tilted in the opposite direction, the above-mentioned rotating handle 247 can be rotated in the opposite direction.

[0024] The above-described embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. An off-road scissor-type self-propelled aerial work platform, comprising a scissor frame (1) arranged on a vehicle body, and a work platform (2) connected to the top of the scissor frame (1), characterized in that: The working platform (2) comprises a bottom base (22) having a concave arc-shaped groove (21), a platform frame (23) that moves on the concave arc-shaped groove (21) to achieve deflection, and a driving structure (24) disposed on the platform frame (23) for driving the platform frame (23) to move and maintaining a horizontal footrest surface when the platform frame (23) is on a slope, wherein the platform frame (23) is in surface-to-surface contact with the concave arc-shaped groove (21); The platform frame (23) comprises a moving part (231) arranged at the bottom, a foot pedal (230) arranged above the moving part (231) and connected to the moving part (231) via a connecting column (233), and a fence part (232) connected to the foot pedal (230), wherein the moving part (231) has a bottom arc-shaped contact surface (2311) matching the shape of the concave arc-shaped groove (21), and a side end of the moving part (231) protrudes beyond the side end of the foot pedal (230); The bottom base (22) is provided with a guide structure (25) for guiding the platform frame (23); the guide structure (25) comprises guide frames (251) symmetrically arranged on both sides of the moving part (231); the guide frames (251) are provided with a guide slot (2511) for limiting the moving part (231); the upper slot surface and the lower slot surface of the guide slot (2511) are coaxially arranged; The driving structure (24) comprises a screw rack (241), screw slides (242) located on both sides of the moving part (231) and each of which has a screw nut built therein, a plurality of driving rods (243) having end rollers (2431) connected to each of the screw slides (242), a screw (244) arranged on the screw rack (241) and cooperating with the screw nut and running across the fence part (232), a screw guide rod (245) arranged on the screw rack (241), a driving shaft (246) mounted with a driving bevel gear (2461) and arranged vertically on the foot pedal (230), and a rotating handle (247) arranged on the driving shaft (246); the screw (244) is provided with a driven bevel gear (2441) meshing with the driving bevel gear (2461).

2. The off-road scissor-type self-propelled aerial work platform according to claim 1, characterized in that: The driving structure (24) comprises driving cylinders symmetrically arranged on both sides of the moving part (231), and the ends of the piston rods thereof are provided with rollers which are in rolling contact with the moving part (231).

3. The off-road scissor-type self-propelled aerial work platform according to claim 1, characterized in that: The deflection angle of the platform frame (23) is 0-30°.

4. The off-road scissor-type self-propelled aerial work platform according to claim 1, characterized in that: The fence portion (232) and the movable portion (231) are detachably connected.

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