An elevator maintenance anti-falling safety support

Abstract

This utility model discloses an elevator maintenance fall prevention safety bracket, relating to the field of elevator maintenance technology. The elevator maintenance fall prevention safety bracket includes crossbeams, connecting plates, a positioning structure, and a compression structure. There are two sets of crossbeams arranged front and rear. Two sets of reinforcing plates are fixedly installed on the two sets of crossbeams. Two sets of shells are fixedly installed on the two sets of crossbeams and the two sets of reinforcing plates. Rollers are rotatably installed inside the shells, and steel cables are wound around the outer walls of the rollers. The connecting plates are fixedly installed at one end of the two sets of steel cables, and transverse sliding blocks are provided on both sides of the connecting plates. This elevator maintenance fall prevention safety bracket can drive the two sets of transverse sliding blocks to tighten against the inner wall of the elevator shaft, increasing the friction of the elevator car. It can also pull the connecting plates, further reducing the risk of falls. These two reinforcement methods make the elevator car more stable during maintenance, improving the reliability and safety of the bracket.

Description

Technical Field

[0001] This utility model relates to the field of elevator maintenance technology, and in particular to a safety bracket for preventing falls during elevator maintenance. Background Technology

[0002] Chinese patent document CN218261426U discloses an elevator maintenance safety support bracket, comprising a support mechanism and a limiting mechanism. The support mechanism includes a support cylinder with an open groove on its surface. Support rods are symmetrically slidably mounted at both ends of the support cylinder, and the support rods pass through the ends of the support cylinder. A clamping plate is provided at one end of each support rod, and a movable rod is mounted at the other end of each support rod via a pin. The two movable rods are symmetrically arranged inside the open groove. A rubber pad is provided on the surface of the clamping plate opposite to the support rod. The limiting mechanism includes a connecting block. This bracket is installed above the elevator car top. Through its internal mechanism and the bracket's own weight, it achieves self-locking, maintaining a certain clamping force at all times. Workers' safety ropes can be connected to the bracket to protect workers in case of elevator falls or bumps.

[0003] The aforementioned elevator maintenance safety support bracket can only increase the friction of the elevator car. If the total weight of the equipment and workers during maintenance is large, it increases the danger during maintenance. Therefore, the anti-fall performance of the elevator car still needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a safety bracket for preventing falls during elevator maintenance. This bracket can solve the problem that simply increasing the friction of the elevator car can increase the danger during maintenance if the total weight of the equipment and workers is large. Therefore, the anti-fall performance of the elevator car still needs to be improved.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elevator maintenance anti-fall safety bracket, comprising a crossbeam, a connecting plate, a positioning structure, and a pressing structure. The crossbeams are arranged in two sets, front and back. Two sets of reinforcing plates are fixedly installed on the two sets of crossbeams. Two sets of housings are fixedly installed on the two sets of crossbeams and the two sets of reinforcing plates. Rollers are rotatably installed inside the housings. Steel cables are wound around the outer walls of the rollers. A connecting plate is fixedly installed at one end of the two sets of steel cables. Horizontal moving blocks are provided on both sides of the connecting plate. Friction blocks are fixedly installed on the outer walls of the horizontal moving blocks. The positioning structure is located on the housings and rollers, and is used to position the rollers. The pressing structure is located on the connecting plate, and is used to drive the movement of the horizontal moving blocks.

[0006] Preferably, the top of the connecting plate is provided with two sets of reinforcing rods, which are fixedly installed between the two sets of crossbeams to make the two sets of crossbeams more stable.

[0007] Preferably, the connecting plate is fixedly installed on both the front and rear sides, and a reinforcing block is fixedly installed on the top of the connecting plate. The reinforcing block is fixedly connected to the steel cable, making the connection between the steel cable and the connecting plate more stable.

[0008] Preferably, the connecting plate has two sets of cavities, and a piston block is slidably installed in the cavity. Two sets of through holes are opened on both sides of the connecting plate. The horizontal column is slidably installed in the through holes. The two ends of the horizontal column are fixedly connected to the piston block and the horizontal moving block, respectively. A spring is fixedly installed between the piston block and the inner wall of the cavity. The spring is sleeved on the outer wall of the horizontal column. A baffle is fixedly installed on the inner wall of the cavity.

[0009] Preferably, the connecting plate has an annular opening and a sealing ring is fixedly installed on its inner wall, and the sealing ring is in contact with the outer wall of the cross column.

[0010] Preferably, the positioning structure includes a disc and a screw. A circular opening is provided on the front side of the housing. The disc passes through the circular opening and is fixedly connected to the roller. Eight sets of threaded holes are provided on the front side of the roller and are distributed in a ring at equal intervals. The screw passes through the disc and is threaded into one set of threaded holes.

[0011] Preferably, the extrusion structure includes an oil reservoir, a piston plate, an oil cylinder, and an L-shaped tube. The oil reservoir is fixedly installed on the top of the connecting plate, the piston plate is slidably installed inside the oil reservoir, the oil cylinder is fixedly installed on the top of the oil reservoir, and the free end of the oil cylinder is fixedly connected to the piston plate. L-shaped tubes are fixedly installed on both sides of the oil reservoir. A circular hole communicating with the cavity is opened on the top of the connecting plate, and the L-shaped tube is fixedly installed in the circular hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This elevator maintenance fall prevention safety bracket, through the coordinated use of a shell, rollers, steel cables, discs, screws, connecting plates, oil tanks, piston plates, cylinders, L-shaped tubes, transverse blocks, friction blocks, horizontal columns, piston blocks, stop frames, and springs, can, on the one hand, install the connecting plate on the top of the elevator car, and simultaneously drive two sets of transverse blocks to tighten against the inner wall of the elevator shaft, thereby increasing the friction of the elevator car, reducing the risk of falls, and improving the safety of maintenance operations. On the other hand, it can also traction the connecting plate, further reducing the risk of falls. These two reinforcement methods make the elevator car more stable during maintenance, improving the reliability and safety of the bracket and enhancing its practicality. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a front sectional perspective view of the connecting plate of this utility model;

[0017] Figure 3 This is a perspective view of the roller of this utility model;

[0018] Figure 4 This is a perspective view of the horizontal column of this utility model.

[0019] Reference numerals: 1. Crossbeam; 2. Reinforcing plate; 3. Shell; 4. Roller; 5. Steel cable; 6. Positioning structure; 61. Disc; 62. Screw; 7. Connecting plate; 8. Extrusion structure; 81. Oil reservoir; 82. Piston plate; 83. Oil cylinder; 84. L-shaped tube; 9. Transverse block; 10. Friction block; 11. Cross column; 12. Piston block; 13. Baffle; 14. Spring; 15. Connecting plate; 16. Reinforcing rod; 17. Reinforcing block; 18. Sealing ring. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution: an elevator maintenance anti-fall safety bracket, including a crossbeam 1, a connecting plate 7, a positioning structure 6, and a pressing structure 8. The crossbeam 1 consists of two sets distributed front and back. Two sets of reinforcing plates 2 are fixedly installed on the two sets of crossbeam 1. Two sets of housings 3 are fixedly installed on the two sets of crossbeam 1 and the two sets of reinforcing plates 2. Rollers 4 are rotatably installed inside the housings 3. Steel cables 5 are wound around the outer walls of the rollers 4. The connecting plate 7 is fixedly installed at one end of the two sets of steel cables 5. Horizontal moving blocks 9 are provided on both sides of the connecting plate 7. Friction blocks 10 are fixedly installed on the outer walls of the horizontal moving blocks 9. The positioning structure 6 is provided on the housings 3 and the rollers 4. The positioning structure 6 is used to position the rollers 4. The pressing structure 8 is provided on the connecting plate 7. The pressing structure 8 is used to drive the movement of the horizontal moving blocks 9.

[0022] Two sets of reinforcing rods 16 are provided on the top of the connecting plate 7. The reinforcing rods 16 are fixedly installed between the two sets of crossbeams 1. Connecting plates 15 are fixedly installed on the front and rear sides of the connecting plate 7. A reinforcing block 17 is fixedly installed on the top of the connecting plate 7. The reinforcing block 17 is fixedly connected to the steel cable 5. Two sets of cavities are opened on the connecting plate 7. A piston block 12 is slidably installed in the cavity. Two sets of through holes are opened on both sides of the connecting plate 7. A crossbeam 11 is slidably installed in the through hole. The two ends of the crossbeam 11 are fixedly connected to the piston block 12 and the transverse block 9, respectively. A spring 14 is fixedly installed between the piston block 12 and the inner wall of the cavity. The spring 14 is sleeved on the outer wall of the crossbeam 11. A baffle 13 is fixedly installed on the inner wall of the cavity. An annular opening is opened on the connecting plate 7 and a sealing ring 18 is fixedly installed on its inner wall. The sealing ring 18 is in contact with the outer wall of the crossbeam 11.

[0023] The positioning structure 6 includes a disc 61 and a screw 62. A circular opening is provided on the front side of the housing 3. The disc 61 passes through the circular opening and is fixedly connected to the roller 4. Eight sets of threaded holes, evenly distributed in a ring, are provided on the front side of the roller 4. The screw 62 passes through the disc 61 and is threaded into one set of threaded holes. The extrusion structure 8 includes an oil tank 81, a piston plate 82, a cylinder 83, and an L-shaped tube 84. The oil tank 81 is fixedly installed on the top of the connecting plate 7. The piston plate 82 is slidably installed inside the oil tank 81. The cylinder 83 is fixedly installed on the top of the oil tank 81, and its free end is fixedly connected to the piston plate 82. L-shaped tubes 84 are fixedly installed on both sides of the oil tank 81. A circular hole communicating with the cavity is provided on the top of the connecting plate 7, and the L-shaped tube 84 is fixedly installed inside the circular hole. The crossbeam 1 is placed on the top of the elevator shaft, and then bolts are used to install the crossbeam 1. The screw 62 is then removed using a wrench. Due to its weight, the connecting plate 7 drives the roller via the steel cable 5. The connecting plate 7 automatically falls to the top of the elevator car as the 4 rotates. Then, the screw 62 is reinstalled, and studs are welded to the top of the elevator car. The connecting plate 15 is then installed on the studs using nuts. Subsequently, the control cylinder 83 drives the piston plate 82 to move downward. Then, the hydraulic oil in the oil tank 81 passes through the L-shaped pipe 84 clockwise into the cavity, thereby driving the piston block 12, the horizontal column 11, and the transverse block 9 to move. Then, the transverse block 9 automatically tightens against the inner wall of the elevator shaft. On the one hand, it can install the connecting plate 7 on the top of the elevator car, and at the same time, it can drive the two sets of transverse blocks 9 to tighten against the inner wall of the elevator shaft, which can increase the friction of the elevator car, reduce the risk of falling, and improve the safety of maintenance operations. On the other hand, it can pull the connecting plate 7, further reducing the risk of falling. The two reinforcement methods make the elevator car more stable during maintenance, improve the reliability and safety of the bracket, and enhance the practicality of the bracket.

[0024] Working principle: The crossbeam 1 is placed on the top of the elevator shaft and then bolted to install it. The screw 62 is then removed with a wrench. Due to its weight, the connecting plate 7 drives the roller 4 to rotate via the steel cable 5, and the connecting plate 7 automatically falls to the top of the car. The screw 62 is then reinstalled. A stud is then welded to the top of the elevator car, and the connecting plate 15 is installed on the stud with a nut. The hydraulic cylinder 83 drives the piston plate 82 to move downward. The hydraulic oil in the oil tank 81 flows clockwise through the L-shaped pipe 84 into the cavity, which in turn drives the piston block 12, the crossbeam 11, and the transverse block 9 to move. The transverse block 9 then automatically tightens against the inner wall of the elevator shaft.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A safety bracket for preventing falls during elevator maintenance, characterized in that, include: There are two sets of cross frames (1) distributed in front and behind each other. Two sets of reinforcing plates (2) are fixedly installed on the two sets of cross frames (1). Two sets of shells (3) are fixedly installed on the two sets of cross frames (1) and the two sets of reinforcing plates (2). Rollers (4) are rotatably installed inside the shells (3). Steel cables (5) are wound around the outer wall of the rollers (4). A connecting plate (7) is fixedly installed at one end of two sets of steel cables (5). A transverse block (9) is provided on both sides of the connecting plate (7), and a friction block (10) is fixedly installed on the outer wall of the transverse block (9). A positioning structure (6) is provided on the housing (3) and the roller (4), and the positioning structure (6) is used to position the roller (4); The extrusion structure (8) is disposed on the connecting plate (7) and is used to drive the movement of the transverse block (9).

2. The elevator maintenance anti-fall safety bracket according to claim 1, characterized in that: The top of the connecting plate (7) is provided with two sets of reinforcing rods (16), which are fixedly installed between the two sets of crossbeams (1).

3. The elevator maintenance anti-fall safety bracket according to claim 2, characterized in that: Connecting plates (15) are fixedly installed on the front and rear sides of the connecting plate (7), and a reinforcing block (17) is fixedly installed on the top of the connecting plate (7). The reinforcing block (17) is fixedly connected to the steel cable (5).

4. The elevator maintenance anti-fall safety bracket according to claim 3, characterized in that: The connecting plate (7) has two sets of cavities, and a piston block (12) is slidably installed in the cavity. Two sets of through holes are opened on both sides of the connecting plate (7). A horizontal column (11) is slidably installed in the through hole. The two ends of the horizontal column (11) are fixedly connected to the piston block (12) and the horizontal moving block (9) respectively. A spring (14) is fixedly installed between the piston block (12) and the inner wall of the cavity. The spring (14) is sleeved on the outer wall of the horizontal column (11). A baffle (13) is fixedly installed on the inner wall of the cavity.

5. The elevator maintenance anti-fall safety bracket according to claim 4, characterized in that: The connecting plate (7) has an annular opening and a sealing ring (18) is fixedly installed on its inner wall. The sealing ring (18) is in contact with the outer wall of the cross column (11).

6. The elevator maintenance anti-fall safety bracket according to claim 1, characterized in that: The positioning structure (6) includes a disc (61) and a screw (62). A circular opening is provided on the front side of the housing (3). The disc (61) passes through the circular opening and is fixedly connected to the roller (4). Eight sets of threaded holes are provided on the front side of the roller (4) and are distributed in a ring. The screw (62) passes through the disc (61) and is threaded into one set of threaded holes.

7. The elevator maintenance anti-fall safety bracket according to claim 1, characterized in that: The extrusion structure (8) includes an oil tank (81), a piston plate (82), an oil cylinder (83), and an L-shaped tube (84). The oil tank (81) is fixedly installed on the top of the connecting plate (7). The piston plate (82) is slidably installed inside the oil tank (81). The oil cylinder (83) is fixedly installed on the top of the oil tank (81). The free end of the oil cylinder (83) is fixedly connected to the piston plate (82). L-shaped tubes (84) are fixedly installed on both sides of the oil tank (81). A round hole communicating with the cavity is opened on the top of the connecting plate (7). The L-shaped tube (84) is fixedly installed in the round hole.

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