Automatic folding guardrail

Abstract

The utility model provides an automatic folding guardrail which comprises a supporting body, a turnover platform is connected to the side face of the supporting body, protective guards capable of synchronously turning over along with the platform are arranged on the edges of the two sides of the platform, and the lower ends of the protective guards are rotatably connected to a base fixed to the side face of the platform. The turnover center line of the lower end of the protective fence is perpendicular to the turnover center line of the platform, a transmission mechanism is arranged between the turnover center of the platform and the turnover center of the protective fence, and the transmission mechanism can drive the protective fence to turn over in the unfolding direction in the unfolding process of the platform, so that the protective fence is folded in the folding process of the platform. The protective fence is driven to turn over in the folding direction; the platform is reasonable in design structure and convenient to operate, the turnover protective fences are arranged on the two sides of the platform, automatic folding of the protective fences can be rapidly completed in the platform folding process through the transmission mechanism, the work of manually disassembling the protective fences by workers can be omitted, and the working efficiency and the safety can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety protection device design, and particularly relates to an automatic folding guardrail. Background Art

[0002] During some high-altitude operations, workers need to stand on a platform for operation. To ensure safety and prevent accidents, guardrails are usually installed around the platform. To facilitate the work of workers, the platform is usually set to be movable, that is, the platform is erected when needed and folded when not needed (i.e., the platform has two usage states: horizontal expansion and vertical folding). Since the existing guardrails are not foldable, in order to facilitate the folding of the platform, the platform guardrails need to be removed first. For easy installation and disassembly, the joint between the guardrail and the platform is fixed by a pin. When removing, the work efficiency is low and there is a great danger. Therefore, there is an urgent need for an automatic folding guardrail that can fold with the folding of the platform and unfold with the unfolding of the platform to solve the above problems. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model provides an automatic folding guardrail. Protective fences that can be flipped are arranged on both sides of the platform, and through a transmission mechanism, during the process of folding the platform, the automatic folding of the guardrail can be quickly completed, which can save the work of workers manually removing the guardrail and is beneficial to improving work efficiency and safety.

[0004] The technical solution adopted by the utility model is: an automatic folding guardrail, including a support body. A rotatable platform is connected to the side of the support body. Protective fences that can synchronously flip with the platform are arranged at the edge positions on both sides of the platform. The lower end of the protective fence is rotatably connected to a base fixed on the side of the platform. The flipping center line at the lower end of the protective fence is perpendicular to the flipping center line of the platform. A transmission mechanism is arranged between the flipping center of the platform and the flipping center of the protective fence. The transmission mechanism can drive the protective fence to flip in the unfolding direction when the platform is unfolding, and drive the protective fence to flip in the folding direction when the platform is folding.

[0005] The transmission mechanism includes transmission boxes installed on both sides of the platform and a first shaft fixedly installed on the support body. The first shaft is rotatably matched with the platform. A first gear is fixed on the first shaft. The first gear is located inside the transmission box. The transmission box is rotatably connected to the first shaft. It also includes a second shaft installed on the transmission box. A second gear meshing with the first gear is installed on the second shaft. It further includes a third shaft installed inside the transmission box. A third gear meshing with the second gear is installed on the third shaft.

[0006] An active bevel gear is also installed on the third shaft. The active bevel gear rotates synchronously with the third gear and meshes with a driven bevel gear connected to the lower end of the guardrail.

[0007] Bases are fixed at both sides of the platform. A turning shaft horizontally arranged and capable of rotating relative to the base is installed on the base. One end of the turning shaft extends to the outside of the base and is connected to the driven bevel gear.

[0008] The base includes a base below and a U-shaped frame above. The base is fixed at both sides of the platform.

[0009] The guardrail includes a first sub-guardrail and a third sub-guardrail which are vertically arranged and the lower ends are connected to the turning shaft. The upper ends of the first sub-guardrail and the third sub-guardrail are connected with a second sub-guardrail.

[0010] Both the first sub-guardrail and the third sub-guardrail are telescopic guardrails.

[0011] The beneficial effects of the utility model are as follows:

[0012] The utility model has a reasonable design structure and convenient operation. Flip-up guardrails are arranged on both sides of the platform, and through the transmission mechanism, the automatic folding of the guardrails can be quickly completed during the folding process of the platform, which can save the work of manual removal of the guardrails by staff and is beneficial to improving work efficiency and safety. Description of the Drawings

[0013] Figure 1 is a perspective view of the utility model;

[0014] Figure 2 is a connection structure diagram of the transmission mechanism of the utility model;

[0015] Figure 3 is a structure diagram of the connection between the base and the guardrail of the utility model.

[0016] Wherein: 1, support body; 2, transmission box body; 3, platform; 4, first sub-guardrail; 5, second sub-guardrail; 6, third sub-guardrail; 7, first shaft; 8, first gear; 9, second shaft; 10, second gear; 11, third shaft; 12, third gear; 13, active bevel gear; 14, driven bevel gear; 15, turning shaft; 16, base; 1601, base; 1602, U-shaped frame; 17, steel wire rope. Detailed Implementation Modes

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] As shown in the figure, an automatic folding guardrail includes a support body 1, and a rotatable platform 3 is connected to the side of the support body 1. Among them, the support body 1 and the platform 3 are conventional technologies in the prior art. The support body 1 can be at least two steel pipes, aluminum alloy profiles, etc. that are perpendicular and fixed to the ground, or can also be a wall or other structures fixed to the ground. Its main purpose is to connect the platform 3. More specifically, a steel wire rope 17 is provided on the platform 3, and the upper end of the steel wire rope 17 is connected to a winch (or other lifting equipment). The winch is located above the support body 1. The platform 3 is driven to fold or unfold through the winch and the steel wire rope 17. In the unfolded state, it is the working state. In the folded state, the platform 3 is in a vertically retracted state and is a non-working state.

[0019] Guardrails that can synchronously rotate with the platform 3 are provided at both side edge positions of the platform 3. The lower end of the guardrail is rotatably connected to a base 16 fixed to the side of the platform 3. The flipping center line at the lower end of the guardrail is perpendicular to the flipping center line of the platform 3. A transmission mechanism is provided between the flipping center of the platform 3 and the flipping center of the guardrail. The transmission mechanism can drive the guardrail to flip in the unfolding direction when the platform 3 is unfolding, and drive the guardrail to flip in the folding direction when the platform 3 is folding. Designing the guardrail to flip with the flipping of the platform 3 is mainly to save the time and effort spent in the disassembly and assembly process of the guardrail, and at the same time avoid accidents due to insecure installation, having the characteristic of better safety.

[0020] The transmission mechanism includes transmission boxes 2 installed on both sides of the platform 3 and a first shaft 7 fixedly installed on the support body 1. The first shaft 7 is rotatably matched with the platform 3. A first gear 8 is fixed on the first shaft 7. The first gear 8 is located inside the transmission box 2, and the transmission box 2 is rotatably connected to the first shaft 7; it also includes a second shaft 9 installed on the transmission box 2, and a second gear 10 meshing with the first gear 8 is installed on the second shaft 9; it also includes a third shaft 11 installed inside the transmission box 2, and a third gear 12 meshing with the second gear 10 is installed on the third shaft 11.

[0021] An active bevel gear 13 is also installed on the third shaft 11. The active bevel gear 13 rotates synchronously with the third gear 12, and the active bevel gear 13 meshes with a driven bevel gear 14 connected to the lower end of the guardrail. Since the rotation axis of the platform 3 and the rotation axis of the guardrail are perpendicular to each other, bevel gears are required to achieve power transmission of the vertical axis.

[0022] The above transmission mechanism is mainly used to achieve: when the platform 3 is in the unfolded state, the guardrail unfolds, that is, in the protective state; when the platform 3 is in the folded state, the guardrail also folds, that is, in the non-protective state. The purpose of designing the folding of the guardrail is mainly to prevent interference of the guardrail when the platform 3 is folded, so that the platform 3 cannot be folded.

[0023] The working principle of the above transmission mechanism is as follows: Taking the process of the platform 3 from the unfolded state to the retracted state as an example, as Figure 1-2 shown, since the first shaft 7 and the first gear 8 are in a fixed state, when the platform 3 is turned upwards, the transmission housing 2 can be turned with the turning of the platform 3. At this time, the rotation direction of the second gear 10 is as Figure 2 shown in the counterclockwise direction, the rotation direction of the third gear 12 is clockwise, and the rotation direction of the active bevel gear 13 is also clockwise. Since the active bevel gear 13 and the driven bevel gear 14 mesh with each other, the rotation direction of the turning shaft 15 is as Figure 2 shown by the arrow near the turning shaft 15 in, and finally the guardrail is turned from the vertical state to the horizontal state; conversely, in the process of the platform 3 changing from the retracted state to the unfolded state, the guardrail can also change from the retracted state to the vertical state (the vertical state is the working state of the guardrail).

[0024] Bases 16 are fixed at both sides of the platform 3. A horizontally arranged turning shaft 15 that can rotate relative to the base 16 is installed on the base 16. One end of the turning shaft 15 extends to the outside of the base 16 and is connected to the driven bevel gear 14. Specifically, the base 16 includes a lower base 1601 and an upper U-shaped frame 1602. The base 1601 is fixed at both sides of the platform 3 and can be connected to the platform 3 by means of bolt connection. The U-shaped frame 1602, that is, the cross-section shape of the upper part of the base 16 is U-shaped. Its purpose is to enable the guardrail to move from the vertical state to the horizontal state during turning. In the vertical state, the middle position of the side surface of the U-shaped frame 1602 can be used as a limiting member to prevent the guardrail from over-turning and causing potential safety hazards.

[0025] The guardrail includes a first sub-guardrail 4 and a third sub-guardrail 6 that are vertically arranged and whose lower ends are connected to the turning shaft 15. The upper ends of the first sub-guardrail 4 and the third sub-guardrail 6 are connected with a second sub-guardrail 5. That is, the whole guardrail is in a gate-shaped structure, which can make the three sub-guardrails coplanar, and can minimize the thickness of the folded guardrail when folding. The first sub-guardrail 4 and the third sub-guardrail 6 are both telescopic guardrails, which can facilitate the adjustment of the overall height of the guardrail to meet the on-site use.

[0026] This automatic folding guardrail can flip synchronously with the flipping of the platform 3. After the platform 3 is unfolded, the guardrail can be automatically unfolded to play a safety protection role; when the platform 3 is retracted, the platform 3 can be automatically folded to avoid the situation where the platform 3 cannot be retracted. This folding guardrail can replace the traditional detachable guardrail, reduce unnecessary installation and disassembly processes, and can improve work efficiency and safety.

[0027] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic folding guardrail, characterized in that: The utility model comprises a support body, a flippable platform is connected to the side of the support body, guardrails which can flip synchronously with the platform are arranged at the edge positions of both sides of the platform, the lower end of the guardrails can be rotatably connected to a base fixed to the side of the platform, the flipping center line of the lower end of the guardrail and the flipping center line of the platform are arranged perpendicular to each other, a transmission mechanism is arranged between the flipping center of the platform and the flipping center of the guardrail, and the transmission mechanism can drive the guardrail to flip in the direction of unfolding when the platform is unfolding, and drive the guardrail to flip in the direction of folding when the platform is folding.

2. The automatic folding guardrail according to claim 1, characterized in that: The transmission mechanism includes a transmission box installed on both sides of the platform and a first shaft fixedly installed on the support body, the first shaft is rotatably matched with the platform, a first gear is fixed on the first shaft, the first gear is located inside the transmission box, and the transmission box is rotatably connected to the first shaft; it also includes a second shaft installed on the transmission box, a second gear meshing with the first gear is installed on the second shaft; it also includes a third shaft installed in the transmission box, a third gear meshing with the second gear is installed on the third shaft.

3. The automatic folding guardrail according to claim 2, characterized in that: A driving bevel gear is also installed on the third shaft. The driving bevel gear rotates synchronously with the third gear, and the driving bevel gear is meshed with a driven bevel gear connected to the lower end of the guardrail.

4. The automatic folding guardrail according to claim 1, characterized in that: Bases are fixed on both sides of the platform, and a horizontally arranged flip shaft capable of rotating relative to the base is installed on the base. One end of the flip shaft extends to the outside of the base and is connected to the driven bevel gear.

5. The automatic folding guardrail according to claim 1, characterized in that: The base comprises a lower pedestal and an upper U-shaped frame, and the pedestal is fixed at two sides of the platform.

6. The automatic folding guardrail according to claim 4, characterized in that: The guardrail comprises a first sub-guardrail and a third sub-guardrail which are vertically arranged and connected to the flip shaft at the lower ends, and the upper ends of the first sub-guardrail and the third sub-guardrail are connected to the second sub-guardrail.

7. The automatic folding guardrail according to claim 6, characterized in that: The first sub-guardrail and the third sub-guardrail are both retractable guardrails.

Images