Stepped armrest frame

Abstract

The utility model discloses a step armrest frame which comprises an armrest frame body and a locking mechanism, the armrest frame body is provided with multiple steps, and the bottom of the armrest frame body is connected with a plurality of universal wheels. The locking mechanism comprises a pedal hinged to the armrest frame body and a wheel seat, and the wheel seat is used for installing part of the moving wheels and located below the pedal. The armrest frame body is provided with a structure for limiting vertical swing of the pedal, and a clamping piece with a clamping groove is arranged at the bottom of the pedal. When the pedal is treaded to swing downwards, the clamping piece pushes the wheel seat to enable the moving wheel to be away from the ground, so that the bottom of the armrest frame main body is in contact with the ground to lock movement; when the wheel seats are clamped into the clamping grooves, the wheel seats drive the moving wheels to make contact with the ground and lift the bottom of the armrest frame to be away from the ground. The universal wheels enable the armrest frame to move flexibly, and operators can transfer the armrest frame conveniently. And the locking mechanism realizes locking and unlocking through simple treading action, so that the working efficiency and the safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of scaffolding, and particularly relates to a stepped handrail frame. Background Art

[0002] When performing high-altitude operation tasks, operators rely on a stepped handrail frame with an appropriate height to reach the required working height. The stepped handrail frame has multiple steps so that operators can climb the steps to a suitable height for operation. In order to facilitate movement between different operation areas, the stepped handrail frame needs to have good mobility. For this reason, moving wheels are often provided at the bottom of the stepped handrail frame. However, during operation, the stability of the stepped handrail frame is the key to ensuring operation safety.

[0003] In the prior art, most stepped handrail frames are fixed by equipping with rollers with brakes, but the stability of this method is insufficient, the reliability is low, and there are safety problems. Summary of the Utility Model

[0004] In order to overcome the problem that the stepped handrail frame in the prior art has insufficient stability during operation and is prone to sliding, resulting in safety accidents such as the fall of operators, the utility model provides a stepped handrail frame.

[0005] To solve the above problems, the utility model is implemented according to the following technical solutions:

[0006] The utility model provides a stepped handrail frame, comprising:

[0007] A handrail frame main body, the handrail frame main body having multiple steps; a plurality of universal wheels are connected to the bottom of the handrail frame main body;

[0008] A locking mechanism, the locking mechanism comprising a pedal and a wheel seat. The pedal is hinged to the handrail frame main body. The wheel seat is used for installing part of the moving wheels. The wheel seat is hinged to the handrail frame main body, and the wheel seat is located below the pedal;

[0009] Wherein, the handrail frame main body has a limiting structure for limiting the up and down swing of the pedal. A clamping member is arranged at the bottom of the pedal. The clamping member has a clamping groove adapted to be clamped with the wheel seat;

[0010] When the pedal is stepped on and swings downward, the clamping member pushes the wheel seat to drive the moving wheel away from the ground, so that the bottom of the handrail frame main body contacts the ground to lock the movement of the stepped handrail frame;

[0011] When the wheel seat is clamped in the clamping groove of the clamping member, the wheel seat drives the moving wheel to contact the ground and raises the bottom of the stepped handrail frame, so that the bottom of the handrail frame main body is away from the ground.

[0012] Preferably, a support column is connected to the main body of the handrail frame. The support column and the wheel seat are arranged on the same side of the handrail frame column, and the support column is arranged at the bottom of the main body of the handrail frame.

[0013] Wherein, the height of the support column is adapted to the height of the universal wheel. When the pedal swings downward, the clamping member pushes against the wheel seat to drive the moving wheel away from the ground, so that the support column of the step handrail frame contacts the ground.

[0014] Preferably, the wheel seat is further provided with a reset plate. When the reset plate is stepped on, the wheel seat is clamped in the card slot of the clamping member, so that the support column of the step handrail frame is away from the ground.

[0015] Preferably, the main body of the handrail frame has a workbench for personnel to stand and operate. The workbench is located at the top of the main body of the handrail frame, and the main body of the handrail frame is connected with a plurality of storage plates.

[0016] A plurality of the storage plates are arranged below the workbench, and the plurality of storage plates are arranged in a stacked manner from top to bottom.

[0017] Preferably, the main body of the handrail frame is further provided with a limiting rod and a limiting block. The limiting rod is arranged below the pedal, and the limiting block is arranged above the pedal. There is a certain distance between the limiting rod and the limiting block, so that the pedal has a certain activity space.

[0018] Preferably, the card slot of the clamping member includes a first card slot and a second card slot. The wheel seat is provided with a clamping rod, and the clamping rod is matched with the card slot. When the pedal is in the locked position, the clamping rod is inserted into the first card slot. When the pedal is in the unlocked position, the clamping rod is inserted into the second card slot.

[0019] Preferably, the pedal is provided with a rotating shaft, and the rotating shaft is hinged to the main body of the handrail frame.

[0020] Preferably, two moving wheels are respectively installed on the wheel seat, and the wheel seat is further provided with a reset plate. By stepping on the reset plate, the locking mechanism can be reset.

[0021] Preferably, the clamping member is provided with a through hole, and the through hole is connected to the limiting rod through an elastic element.

[0022] Preferably, a semi-enclosed guardrail is connected to the workbench of the main body of the handrail frame, and handrails are connected to both sides of the steps of the main body of the handrail frame.

[0023] Compared with the prior art, the beneficial effects of the step handrail frame of the present utility model are as follows:

[0024] The present utility model provides a stepped handrail frame, which includes a handrail frame main body and a locking mechanism. The handrail frame main body has multiple levels of steps; a plurality of universal wheels are connected to the bottom of the handrail frame main body; the locking mechanism includes a pedal and a wheel seat. The pedal is hinged to the handrail frame main body. The wheel seat is used to install part of the moving wheels. The wheel seat is hinged to the handrail frame main body and the wheel seat is located below the pedal. Among them, the handrail frame main body has a limiting structure for limiting the up and down swing of the pedal. A clamping member is provided at the bottom of the pedal. The clamping member has a clamping groove adapted to engage with the wheel seat. When the pedal is stepped on and swings downward, the clamping member pushes against the wheel seat to drive the moving wheels away from the ground, so that the bottom of the handrail frame main body contacts the ground to lock the movement of the stepped handrail frame. When the wheel seat is clamped in the clamping groove of the clamping member, the wheel seat drives the moving wheels to contact the ground and raises the bottom of the stepped handrail frame, so that the bottom of the handrail frame main body is away from the ground.

[0025] The design of the universal wheels of the present utility model enables the handrail frame to move flexibly on the ground, facilitating the transfer of operators between different working areas. The locking mechanism can firmly fix the handrail frame on the ground through the cooperation of the pedal and the wheel seat, effectively preventing sliding or tipping, improving the stability of the handrail frame, and ensuring the safety of operators. Through a simple pedal stepping action, the locking and unlocking of the handrail frame can be achieved, improving work efficiency and facilitating the storage and transportation of the handrail frame. Description of the Drawings

[0026] The following further details the specific embodiments of the present utility model in conjunction with the drawings, where:

[0027] Figure 1 is a perspective view of a stepped handrail frame of the present utility model;

[0028] Figure 2 is an exploded view of a stepped handrail frame of the present utility model;

[0029] Figure 3 is a partial enlarged view of the exploded view of a stepped handrail frame of the present utility model;

[0030] Figure 4 is a side sectional view of a stepped handrail frame of the present utility model;

[0031] Figure 5 is a partial enlarged view of the side section of a stepped handrail frame of the present utility model;

[0032] Figure 6 is a side view of a stepped handrail frame of the present utility model when the clamping rod is in the first clamping groove;

[0033] Figure 7It is a side view of the clamping rod of a stepped handrail of the present utility model in the second card slot;

[0034] In the figure: 10 - handrail frame main body, 20 - locking mechanism; 11 - steps, 12 - universal wheels, 13 - workbench, 14 - storage board, 15 - guardrail, 16 - handrail, 17 - frame; 21 - pedal, 22 - wheel seat, 23 - clamping part; 100 - support column, 101 - limiting rod, 102 - limiting block, 103 - rotating shaft, 104 - rotating shaft; 121 - universal wheel, 122 - moving wheel; 221 - clamping rod, 222 - reset plate; 231 - first card slot, 232 - second card slot, 233 - through hole, 234 - elastic element. Specific embodiments

[0035] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0036] As Figures 1 to 7 shown, a stepped handrail frame of the present utility model includes: a handrail frame main body 10 and a locking mechanism. The handrail frame main body 10 has multiple levels of steps 11; a plurality of universal wheels 12 are connected to the bottom of the handrail frame main body 10; the locking mechanism 20 includes a pedal 21 and a wheel seat 22. The pedal 21 is hinged to the handrail frame main body 10. The wheel seat 22 is used to install part of the moving wheels 122. The wheel seat 22 is hinged to the handrail frame main body 10, and the wheel seat 22 is located below the pedal 21; wherein, the handrail frame main body 10 has a limiting structure for limiting the up and down swing of the pedal 21. A clamping part 23 is arranged at the bottom of the pedal 21. The clamping part 23 has a card slot adapted to be clamped with the wheel seat 22; when the pedal 21 is stepped on and swings downward, the clamping part 23 pushes the wheel seat 22 to drive the moving wheels 122 away from the ground, so that the bottom of the handrail frame main body 10 contacts the ground to lock the movement of the stepped handrail frame; when the wheel seat 22 is clamped in the card slot of the clamping part 23, the wheel seat 22 drives the moving wheels 122 to contact the ground and raises the bottom of the stepped handrail frame, so that the bottom of the handrail frame main body 10 is away from the ground.

[0037] In this embodiment, the stepped handrail frame includes the following detailed description. The handrail frame body 10 is made by welding to form a strong frame structure. Multiple stepped levels 11 are welded on the frame for operators to climb. Universal wheels 12 are installed at the bottom of the handrail frame body 10. Among them, two universal wheels 121 are installed at the front, and the other two mobile wheels 122 are installed on the rear wheel seat 22. In the locking mechanism 20, the pedal 21 is hinged to the handrail frame body 10. It can be understood that a rotating shaft is provided at the hinged position to enable the pedal 21 to rotate along the rotating shaft by stepping on it at a certain angle. The wheel seat 22 is installed below the pedal 21 and is hinged to the handrail frame body 10. It can be understood that a plurality of through holes are provided on the wheel seat 22, and a rotating shaft passes through the through holes and is connected to the handrail frame body 10. Combined with Figure 6 The clamping member 23 is provided with two clamping grooves, namely the first clamping groove 231 and the second clamping groove 232. The wheel seat 22 is provided with a clamping rod 221, and the clamping rod 221 cooperates with the clamping grooves on the clamping member 23.

[0038] As Figure 3 and Figure 6 shown, a clamping member 23 is provided at the bottom of the pedal 21 and cooperates with the wheel seat 22. When the pedal 21 is stepped on, the clamping member 23 drives the wheel seat 22 to move up and down, thereby controlling the lifting of the universal wheels 12 to achieve locking and unlocking of the handrail frame.

[0039] Optionally, the materials of components such as the handrail frame body 10, the stepped levels 11, the universal wheels 12, the pedal 21, the wheel seat 22, and the clamping member 23 can be adjusted according to actual needs. The surfaces of the stepped levels 11 and the pedal 21 are roughened to improve safety.

[0040] The embodiment is as Figure 3 shown. The handrail frame body 10 is connected with a support column 100. The support column 100 and the wheel seat 22 are arranged on the same side of the handrail frame column. The support column 100 is arranged at the bottom of the handrail frame body 10. Among them, the height of the support column 100 is adapted to the height of the universal wheels 12. When the pedal 21 swings downward, the clamping member 23 pushes against the wheel seat 22 to drive the mobile wheels 122 away from the ground, so that the support column 100 of the stepped handrail frame contacts the ground.

[0041] In this embodiment, the design of the universal wheels 12 is further described in detail. The universal wheels 121 are directly installed at the bottom of the handrail frame body 10 and contact the ground, enabling the handrail frame to move freely on the horizontal plane. The mobile wheels 122 are connected to the wheel seat 22, and the installation height of the mobile wheels 122 on the horizontal plane is higher than that of the universal wheels 121.

[0042] In this embodiment, for the support column 100 extended from the handrail frame body 10, there is a certain distance from the bottom position to the ground, and the height at which the mobile wheels 122 are lifted off the ground should be above the bottom surface of the support column 100.

[0043] Embodiment example Figure 3 As shown in the figure, the main body 10 of the handrail frame is further provided with a limiting rod 101 and a limiting block 102. The limiting rod 101 is arranged below the pedal 21, and the limiting block 102 is arranged above the pedal 21. There is a certain distance between the limiting rod 101 and the limiting block 102, so that the pedal 21 has a certain movement space.

[0044] It can be understood that the movement range of the pedal 21 is jointly controlled by the limiting rod 101 and the limiting block 102. When the pedal 21 is stepped on when the handrail frame is locked, the limiting rod 101 restricts the amplitude of its downward movement; when unlocked, the limiting block 102 restricts the amplitude of its upward movement. By adjusting the length of the support column 100 and the distance between the limiting block 102 and the limiting rod 101, the movement range of the pedal 21 can be controlled according to different types of universal wheels, so as to ensure the overall stability of the handrail frame.

[0045] Embodiment example Figure 5 As shown in the figure, the clamping member 23 is provided with a pair of clamping grooves, namely a first clamping groove 231 and a second clamping groove 232; the wheel seat 22 is provided with a clamping rod 221, and the clamping rod 221 is matched with the clamping groove. When the pedal 21 is in the locked position, the clamping rod 221 is clamped into the first clamping groove 231, and when the pedal 21 is in the unlocked position, the clamping rod 221 is clamped into the second clamping groove 232.

[0046] Combined with Figure 6 It can be understood that when the clamping rod 221 is in the first clamping groove 231, the wheel seat 22 drives the moving wheel 122 to move upward relative to the ground; combined with Figure 7 It can be understood that when the clamping rod 221 is in the second clamping groove 232, the wheel seat 22 drives the moving wheel 122 to contact the ground.

[0047] Embodiment example Figure 6 and Figure 7 As shown in the figure, the two grooves on the clamping member 221 are respectively the first clamping groove 231 and the second clamping groove 232. There is a separating flange between the first clamping groove 231 and the second clamping groove 232. The first clamping groove 231 is provided with an inclined end face. When the clamping rod 221 moves to the first clamping groove 231, its surface will rub against the inclined end face to prevent the clamping rod from moving excessively. One end face of the separating flange is arc-shaped, which is convenient for the clamping rod 221 to move from the second clamping position 232 to the first clamping groove 231. The second clamping groove 232 is an arc-shaped groove, and there is a protrusion at the inner arc end point of the groove to prevent the clamping rod 221 from moving excessively in the second clamping groove 232.

[0048] Working principle: When it is necessary to move the handrail frame, the operator steps on the pedal 21, the clamping rod 221 disengages from the first clamping groove 231, and the wheel seat 22 together with the moving wheel 122 descends, so that all the universal wheels 12 are in a freely rotating state, thus realizing the movement of the handrail frame. When it is necessary to fix the handrail frame, the operator lifts the pedal 21, the clamping rod 221 enters the first clamping groove 231, and the support column 100 contacts the ground, thereby fixing the handrail frame to the ground.

[0049] As shown in the embodiments Figure 3 and Figure 5 shown, preferably, the pedal 21 is hinged to the handrail frame body 10, and a rotating shaft 103 is provided at the hinged position, and the rotating shaft 103 is connected to the handrail frame body 10.

[0050] It can be understood that two counterbores are provided on both sides of the pedal 21 and can be connected to the rotating shaft 103. Through the rotating shaft 103, the pedal 21 can rotate at a certain angle, and the movement range of the pedal 21 is jointly controlled by the limiting rod 101 and the limiting block 102. When the handrail frame is locked, step on the pedal 21, and the limiting rod 101 restricts the downward movement amplitude; when unlocking, the limiting block 102 restricts the upward movement amplitude.

[0051] As shown in the embodiments Figure 3 shown, preferably, the wheel seat 22 is further provided with a reset plate 222. When the reset plate 222 is stepped on, the wheel seat 22 is clamped in the clamping groove of the clamping member 23, so that the support column 100 of the stepped handrail frame is away from the ground.

[0052] It can be understood that one of the wheel seats in the wheel seat 22 is provided with a reset plate 222. When the operator needs to unlock the handrail frame, step on the reset plate 222 to move the whole wheel seat 22 downward, and the clamping rod 221 moves to the second clamping groove 232, and the moving wheel 122 contacts the ground to realize unlocking.

[0053] Preferably, the wheel seat 22 is hinged to the handrail frame body 10, and the hinged position of the wheel seat 22 and the handrail frame body 10 is arranged below the pedal 21.

[0054] It can be understood that a rotating shaft 104 is provided below the pedal 21, and a plurality of through holes are provided on the wheel seat 22. The rotating shaft 104 passes through the through holes and is connected to the handrail frame body 10, so that the two wheel seats 22 are on the same horizontal plane.

[0055] As shown in the embodiments Figure 5 and Figure 6 shown, preferably, the clamping member 23 is provided with a through hole 233, and the through hole 233 is connected to the limiting rod 101 through an elastic element 234.

[0056] Its working principle is that the elastic element 234 can assist the clamping part 221 to reach the first clamping groove 231 or the second clamping groove 232. When the operator steps on the pedal 21, the clamping rod 221 passes through the separating flange between the first clamping groove 231 and the second clamping groove 232, and the elastic element 234 will stretch. The applied elastic deformation force assists the clamping rod 221 to pass through the separating flange and reach the position of the first clamping groove 321. When the operator steps on the reset plate 222, the elastic element 234 contracts, and the clamping rod 221 returns to the position of the second clamping groove 232.

[0057] For example Figure 1 As shown, preferably, the main body 10 of the handrail frame has a workbench 13 for personnel to stand and operate. The workbench is located at the top of the main body 10 of the handrail frame, and the main body 10 of the handrail frame is connected with a plurality of storage boards 14; a plurality of the storage boards 10 are arranged below the workbench, and the plurality of storage boards 14 are arranged in a stacked manner from top to bottom.

[0058] In this embodiment, the safety protection measures for the workbench 13 and the ladder 11 are further described in detail. The guardrail 15 is arranged around the workbench 13 to prevent the operator from falling from the edge. The handrails 16 are arranged on both sides of the ladder 20 to provide additional gripping points for climbing. The guardrail 15 and the handrails 16 can be made of anti-slip materials to ensure the safety of the operator.

[0059] In summary, the present utility model provides a ladder handrail frame with stable structure, simple operation and diverse functions. Through the design of the locking mechanism, the quick locking and unlocking of the handrail frame are realized, and the work efficiency is improved. The setting of functional components such as multi-stage ladders, workbenches, and storage boards makes it a multi-functional platform integrating climbing, operation, and storage. In addition, the handrail frame is also provided with a number of safety protection measures, such as guardrails, handrails, anti-slip surfaces, etc., to ensure the safety of the operator.

[0060] The working principle of the ladder handrail frame described in the present utility model is as follows:

[0061] The operator can freely move the handrail frame on the ground to the required working position, climb and step on the first ladder. The ladder will move slightly downward, triggering the stretching of the elastic element at the bottom, causing the clamping rod to move to the second clamping groove of the clamping part. At the same time, the wheel seat will drive the moving wheels to leave the ground, and the whole side of the handrail frame will move downward, and the support column will contact the ground to ensure the stability of the handrail frame through friction. When it is necessary to move the handrail frame, the operator only needs to step on the reset plate, the elastic element contracts, the clamping rod returns to the first clamping groove, the moving wheels contact the ground again, and the handrail frame can move. This design combines the functions of fixing and moving to ensure the stability and flexibility during use.

[0062] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Therefore, any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A stepped handrail frame, characterized in that, Comprising: A handrail frame main body (10), the handrail frame main body (10) having multiple levels of steps (11); a plurality of universal wheels (12) are connected to the bottom of the handrail frame main body (10); A locking mechanism (20), the locking mechanism (20) including a pedal (21) and a wheel seat (22), the pedal (21) being hinged to the handrail frame main body (10), the wheel seat (22) being used for mounting a part of the moving wheels (122), the wheel seat (22) being hinged to the handrail frame main body (10), and the wheel seat (22) being located below the pedal (21); Wherein, the handrail frame main body (10) has a limiting structure for limiting the up and down swing of the pedal (21), a clamping member (23) is arranged at the bottom of the pedal (21), and the clamping member (23) has a card slot adapted to be clamped with the wheel seat (22); When the pedal (21) is stepped on and swings downward, the clamping member (23) pushes against the wheel seat (22) to drive the moving wheel (122) away from the ground, so that the bottom of the handrail frame main body (10) contacts the ground to lock the movement of the stepped handrail frame; When the wheel seat (22) is clamped in the card slot of the clamping member (23), the wheel seat (22) drives the moving wheel (122) to contact the ground and raises the bottom of the stepped handrail frame, so that the bottom of the handrail frame main body (10) is away from the ground.

2. A stepped handrail frame according to claim 1, wherein The handrail frame main body (10) is connected with a support column (100), the support column (100) and the wheel seat (22) are arranged on the same side of the handrail frame column, and the support column (100) is arranged at the bottom of the handrail frame main body (10); Wherein, the height of the support column (100) is adapted to the height of the universal wheel (12). When the pedal (21) swings downward, the clamping member (23) pushes against the wheel seat (22) to drive the moving wheel (122) away from the ground, so that the support column (100) of the stepped handrail frame contacts the ground.

3. A stepped handrail frame according to claim 1, wherein The wheel seat (22) is further provided with a reset plate (222). When the reset plate (222) is pressed, the wheel seat (22) is clamped in the card slot of the clamping member (23), so that the support column (100) of the stepped handrail frame is away from the ground.

4. A stepped handrail frame according to claim 1, wherein The handrail frame main body (10) has a workbench (13) for personnel to stand and operate. The workbench is located at the top of the handrail frame main body (10), and the handrail frame main body (10) is connected with a plurality of storage boards (14); A plurality of the storage boards (14) are arranged below the workbench, and the plurality of storage boards (14) are arranged in a stacked manner.

5. A stepped handrail frame according to claim 1, wherein The main body (10) of the handrail frame is further provided with a limiting rod (101) and a limiting block (102). The limiting rod (101) is arranged below the pedal (21), and the limiting block (102) is arranged above the pedal (21). There is a certain distance between the limiting rod (101) and the limiting block (102), so that the pedal (21) has a certain movement space.

6. The stepped handrail frame according to claim 1, wherein The card slot of the clamping member (23) includes a first card slot (231) and a second card slot (232). The wheel seat (22) is provided with a clamping rod (221), and the clamping rod (221) is matched with the card slot. When the pedal (21) is in the locked position, the clamping rod (221) is inserted into the first card slot (231). When the pedal (21) is in the unlocked position, the clamping rod (221) is inserted into the second card slot (232).

7. The stepped handrail frame according to claim 1, wherein The pedal (21) is provided with a rotating shaft (103), and the rotating shaft (103) is hinged to the main body (10) of the handrail frame.

8. The stepped handrail frame according to claim 1, wherein The wheel seat (22) is respectively installed with two moving wheels (122). The wheel seat (22) is further provided with a reset plate (222). By stepping on the reset plate (222), the locking mechanism (20) can be reset.

9. The stepped handrail frame according to claim 5, wherein The clamping member (23) is provided with a through hole (233), and the through hole (233) is connected to the limiting rod (101) through an elastic element (234).

10. The stepped handrail frame according to claim 1, wherein A semi-enclosed guardrail (15) is connected to the workbench (13) of the main body (10) of the handrail frame, and handrails (16) are connected to both sides of the steps (11) of the main body (10) of the handrail frame.

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