Anti-falling device for elevator maintenance

Abstract

The utility model relates to the technical field of elevator maintenance, and discloses an elevator maintenance anti-falling device which comprises a baffle, a fixed box is fixedly connected to the inner wall of the baffle, a hydraulic cylinder is fixedly connected to the outer wall of the fixed box, a movable block is fixedly connected to the output end of the hydraulic cylinder, and the outer wall of the movable block is slidably connected to the inner wall of the fixed box. A connecting plate is rotatably connected to the upper surface of the moving block, a guide block is rotatably connected to the lower surface of the connecting plate, a sliding rail is slidably connected to the interior of the guide block, and the lower surface of the sliding rail is fixedly connected to the inner wall of the fixed box. According to the anti-falling device, the output end of the hydraulic cylinder drives the movable block to move, the movable block lifts the connecting plates at the two ends to drive the guide block to move relatively, the guide block drives the outer wall of the top plate to make contact with and be fixed to the inner side of an elevator opening through the positioning plate, the device can be fixed to the elevator openings with different widths, and deviation and swing of the anti-falling device are prevented; and the safety and the adaptability of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator maintenance, in particular to an elevator maintenance anti-falling device. Background Art

[0002] An elevator is a means of transportation or equipment used to transport people, goods or materials vertically or nearly vertically. It usually consists of one or more boxes that move up and down along guide rails or cable systems through electric motors or hydraulic systems. It can connect elevator entrances on different floors to facilitate people to move up and down inside a building. The elevator maintenance anti-fall device is a device used to ensure the safety of elevator maintenance personnel during their work. It is mainly intended to prevent maintenance personnel from accidentally falling or getting injured. Usually, maintenance personnel install the maintenance anti-fall device at the elevator entrance when performing maintenance, and then use a safety rope to move vertically to the top of the elevator to perform maintenance work.

[0003] Most of the current maintenance anti-fall devices are difficult to adapt to elevator openings of different widths, which may cause the device to be unstable or swaying, increase the risk of accidental falls for maintenance personnel, and affect safety and adaptability during use. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an elevator maintenance anti-fall device, which aims to improve the problem that it is difficult to adapt to elevator entrances of different widths, which may cause the device to be unstable or swaying, increase the risk of accidental falling of maintenance personnel, and affect the safety and adaptability during use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An elevator maintenance anti-falling device comprises a baffle, an inner wall of the baffle is fixedly connected to a fixed box, an outer wall of the fixed box is fixedly connected to a hydraulic cylinder, an output end of the hydraulic cylinder is fixedly connected to a moving block, an outer wall of the moving block is slidably connected to the inner wall of the fixed box, an upper surface of the moving block is rotatably connected to a connecting plate, a lower surface of the connecting plate is rotatably connected to a guide block, the inside of the guide block is slidably connected to a slide rail, the lower surface of the slide rail is fixedly connected to the inner wall of the fixed box, an outer wall of the guide block is fixedly connected to a positioning plate, an outer wall of the positioning plate is slidably connected to the inner wall of the fixed box, an outer wall of the positioning plate is fixedly connected to a top plate, and a driving assembly is provided on the upper surface of the baffle.

[0007] Preferably, the driving assembly includes a first motor, the lower surface of the first motor is fixedly connected to the upper surface of the baffle, the output end of the first motor is fixedly connected to a first transmission roller, and the outer wall of the first transmission roller is provided with a chain.

[0008] Preferably, a second transmission roller is provided on the inner wall of the chain, a safety rope drum is fixedly connected to the outer wall of the second transmission roller, a support plate is rotatably connected to the outer wall of the safety rope drum, and the lower surface of the support plate is fixedly connected to the upper surface of the fixing box.

[0009] Preferably, a second motor is fixedly connected to the inner wall of the fixing box, a crank is fixedly connected to the output end of the second motor, and an outer wall of the crank is rotatably connected to the inner wall of the fixing box.

[0010] Preferably, the upper surface of the crank is slidably connected to a limiting frame, and the outer wall of the limiting frame is fixedly connected to a slide plate.

[0011] Preferably, the outer wall of the slide plate is slidably connected with a roller, and the lower surface of the roller is fixedly connected to the upper surface of the fixing box.

[0012] Preferably, a coil is fixedly connected to the upper surface of the slide plate.

[0013] Preferably, the outer wall of the fixing box is fixedly connected to a fixing plate, and the inner wall of the fixing plate is rotatably connected to a pulley.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the output end of the hydraulic cylinder drives the moving block to move, and the moving block raises the connecting plates at both ends to drive the guide block to move relatively. The guide block drives the outer wall of the top plate to contact and fix with the inner side of the elevator entrance through the positioning plate. The device can be fixed at elevator entrances of different widths to prevent the anti-fall device from deflecting and swinging, thereby improving the safety and adaptability of the device.

[0016] 2. In the utility model, the output end of the second motor drives the crank to rotate, and the crank can push the slides on both sides of the limit frame to slide back and forth on the inner wall of the roller shaft, and can drive the coil to move synchronously. When the safety rope is wound, the reciprocating movement of the coil can prevent the safety rope from being tangled in the elevator shaft, thereby reducing the risk of tripping the safety rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of an elevator maintenance anti-falling device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the interior of a fixing box of an elevator maintenance anti-fall device proposed by the utility model;

[0019] Figure 3 A schematic diagram of a guide block of an elevator maintenance anti-falling device proposed by the utility model;

[0020] Figure 4The utility model is a coil schematic diagram of an elevator maintenance anti-falling device.

[0021] Legend:

[0022] 1. Baffle; 2. Fixed box; 3. Hydraulic cylinder; 4. Moving block; 5. Connecting plate; 6. Guide block; 7. Slide rail; 8. Positioning plate; 9. Top plate; 10. First motor; 11. First transmission roller; 12. Chain; 13. Second transmission roller; 14. Safety rope drum; 15. Support plate; 16. Second motor; 17. Crank; 18. Limit frame; 19. Slide plate; 20. Roller; 21. Coil; 22. Fixed plate; 23. Pulley. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings of the specification of this utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 3 , the utility model provides an embodiment: an elevator maintenance anti-falling device, comprising a baffle 1, the inner wall of the baffle 1 is fixedly connected with a fixed box 2, the outer wall of the fixed box 2 is fixedly connected with a hydraulic cylinder 3, the output end of the hydraulic cylinder 3 is fixedly connected with a moving block 4, the outer wall of the moving block 4 is slidably connected to the inner wall of the fixed box 2, the upper surface of the moving block 4 is rotatably connected with a connecting plate 5, the lower surface of the connecting plate 5 is rotatably connected with a guide block 6, the inside of the guide block 6 is slidably connected with a slide rail 7, the lower surface of the slide rail 7 is fixedly connected to the inner wall of the fixed box 2, the outer wall of the guide block 6 is fixedly connected with a positioning plate 8, the outer wall of the positioning plate 8 is slidably connected to the inner wall of the fixed box 2, the outer wall of the positioning plate 8 is fixedly connected with a top plate 9, and the upper surface of the baffle 1 is provided with a driving component;

[0025] Specifically, the baffle 1 has a fixed supporting function for the fixed box 2. At the same time, the baffle 1 can be installed on both sides in front of the elevator entrance. Its length exceeds the width of the elevator entrance, which can ensure that the device is fixed as a whole, and the fixed box 2 can support the position of the hydraulic cylinder 3. When the hydraulic cylinder 3 is turned on, its output end can drive the moving block 4 to slide on the inner wall of the fixed box 2. The fixed box 2 can ensure the stability of the moving block 4 during movement to prevent deviation, and the moving block 4 can simultaneously drive the connecting plates 5 at both ends to move, and the connecting plates 5 can pull or push the guide blocks 6 to move relative to each other at both ends of the slide rail 7. The guide blocks 6 can drive the positioning plates 8 to slide on the inner wall of the fixed box 2, thereby driving the outer wall of the top plate 9 to contact the inner side of the elevator entrance, and the outer walls of the top plates 9 at both ends are provided with anti-slip pads, which can fix the device to ensure that the device will not shake and swing, thereby reducing operational risks.

[0026] Reference Figure 1 The driving assembly includes a first motor 10, the lower surface of the first motor 10 is fixedly connected to the upper surface of the baffle 1, the output end of the first motor 10 is fixedly connected to a first transmission roller 11, and the outer wall of the first transmission roller 11 is provided with a chain 12; the inner wall of the chain 12 is provided with a second transmission roller 13, the outer wall of the second transmission roller 13 is fixedly connected to a safety rope drum 14, the outer wall of the safety rope drum 14 is rotatably connected to a support plate 15, and the lower surface of the support plate 15 is fixedly connected to the upper surface of the fixed box 2;

[0027] Specifically, the baffle 1 has a fixed support function for the first motor 10, which can ensure the stability of the first motor 10 during operation. When the first motor 10 is turned on, its output end can drive the first transmission roller 11 to rotate, and the first transmission roller 11 can drive the chain 12 to rotate through the chain 12. When the second transmission roller 13 rotates, it can drive the safety rope drum 14 fixed thereto to rotate on the inner wall of the support plate 15. The support plate 15 can support the rotation position of the safety rope drum 14 to ensure its stability, and by controlling the rotation direction of the first motor 10, it can drive the safety rope on the safety rope drum 14 to retract and release.

[0028] Reference Figure 1 and Figure 4 The inner wall of the fixed box 2 is fixedly connected with a second motor 16, the output end of the second motor 16 is fixedly connected with a crank 17, the outer wall of the crank 17 is rotatably connected to the inner wall of the fixed box 2; the upper surface of the crank 17 is slidably connected with a limit frame 18, the outer wall of the limit frame 18 is fixedly connected with a slide plate 19; the outer wall of the slide plate 19 is slidably connected with a roller 20, the lower surface of the roller 20 is fixedly connected to the upper surface of the fixed box 2; the upper surface of the slide plate 19 is fixedly connected with a coil 21;

[0029] Specifically, the fixed box 2 has a fixed supporting function for the second motor 16, and the output end of the second motor 16 can drive the crank 17 to rotate on the inner wall of the fixed box 2. The fixed box 2 can ensure the rotation space of the crank 17. When the crank 17 rotates, the cylinder at one end of the crank 17 can slide on the inner wall of the limit frame 18, and then drive the slides 19 on both sides of the limit frame 18 to move back and forth synchronously. The slide 19 can slide on the inner wall of the roller 20. The roller 20 can ensure the stability of the slide 19 and the position guidance of the slide 19 when the slide 19 reciprocates. The slide 19 also has a fixed supporting function for the coil 21, and then can drive the coil 21 to reciprocate, and the safety rope can pass through the coil 21. When the coil 21 reciprocates, it can ensure that the safety rope is neatly arranged on the outer wall of the safety rope drum 14 when it is wound, and avoid the safety rope from being tangled in the elevator shaft.

[0030] Reference Figure 1 The outer wall of the fixed box 2 is fixedly connected to a fixed plate 22, and the inner wall of the fixed plate 22 is rotatably connected to a pulley 23;

[0031] Specifically, the fixing box 2 has a fixed support function for the fixing plate 22, and the fixing plate 22 can support the rotation position of the pulley 23, and the pulley 23 can prevent the safety rope from falling off, and at the same time the pulley 23 can reduce the friction of the safety rope and improve safety.

[0032] Working principle: When the device is needed, the maintenance personnel can install the baffle 1 in front of the elevator entrance until the outer wall of the baffle 1 fits on both sides of the elevator entrance, and then turn on the hydraulic cylinder 3. The output end of the hydraulic cylinder 3 can drive the moving block 4 to slide on the inner wall of the fixed box 2, and the moving block 4 can simultaneously drive the connecting plates 5 at both ends to move, and then the connecting plates 5 can drive the guide blocks 6 at both ends of the slide rail 7 to move relatively, and the guide blocks 6 can drive the positioning plate 8 to slide on the inner wall of the fixed box 2, so as to drive the outer wall of the top plate 9 to contact the inner side of the elevator entrance, so that the device can be fixed at elevator entrances of different widths to prevent the anti-fall device from offset and swinging, and at the same time turn on the first motor 10, the output end of the first motor 10 can drive the first transmission roller 11 to rotate, and then the first transmission roller 11 can drive the second transmission roller 13 to rotate through the chain 12, and at this time the second transmission roller 13 can drive the safety rope drum 14 to rotate on the inner wall of the support plate 15 to control the use distance of the safety rope. As for the winding work of the safety rope, the pulley 23 supported by the fixed plate 22 ensures the stability of the safety rope and prevents it from falling off. At the same time, when the safety rope needs to be wound up after the maintenance is completed, the second motor 16 is turned on, and the output end of the second motor 16 can drive the crank 17 to rotate on the inner wall of the fixed box 2, and one end of the crank 17 can slide on the inner wall of the limit frame 18, and then the slides 19 on both sides of the limit frame 18 can be pushed to slide back and forth on the inner wall of the roller shaft 20 to drive the coil 21 to move synchronously. At this time, the first motor 10 is turned on, and when the safety rope is wound up, the reciprocating movement of the coil 21 can avoid the safety rope from being tangled in the elevator shaft, that is, the device can not only adjust the fixed distance of the top plate 9, adapt to elevators of different widths, ensure that the maintenance personnel are in a stable position when working at heights, and improve the safety and applicability of the device, but also avoid the safety rope from being tangled in a messy way and reduce the risk of tripping the safety rope.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator maintenance anti-fall device, comprising a baffle (1), characterized in that: The inner wall of the baffle (1) is fixedly connected to a fixed box (2), the outer wall of the fixed box (2) is fixedly connected to a hydraulic cylinder (3), the output end of the hydraulic cylinder (3) is fixedly connected to a moving block (4), the outer wall of the moving block (4) is slidably connected to the inner wall of the fixed box (2), the upper surface of the moving block (4) is rotatably connected to a connecting plate (5), the lower surface of the connecting plate (5) is rotatably connected to a guide block (6), the inside of the guide block (6) is slidably connected to a slide rail (7), the lower surface of the slide rail (7) is fixedly connected to the inner wall of the fixed box (2), the outer wall of the guide block (6) is fixedly connected to a positioning plate (8), the outer wall of the positioning plate (8) is slidably connected to the inner wall of the fixed box (2), the outer wall of the positioning plate (8) is fixedly connected to a top plate (9), and the upper surface of the baffle (1) is provided with a driving component.

2. An elevator maintenance anti-falling device according to claim 1, characterized in that: The driving assembly comprises a first motor (10), the lower surface of the first motor (10) is fixedly connected to the upper surface of the baffle (1), the output end of the first motor (10) is fixedly connected to a first transmission roller (11), and the outer wall of the first transmission roller (11) is provided with a chain (12).

3. An elevator maintenance anti-falling device according to claim 2, characterized in that: The inner wall of the chain (12) is provided with a second transmission roller (13), the outer wall of the second transmission roller (13) is fixedly connected to a safety rope drum (14), the outer wall of the safety rope drum (14) is rotatably connected to a support plate (15), and the lower surface of the support plate (15) is fixedly connected to the upper surface of the fixing box (2).

4. An elevator maintenance anti-falling device according to claim 1, characterized in that: A second motor (16) is fixedly connected to the inner wall of the fixed box (2), a crank (17) is fixedly connected to the output end of the second motor (16), and an outer wall of the crank (17) is rotatably connected to the inner wall of the fixed box (2).

5. An elevator maintenance anti-falling device according to claim 4, characterized in that: The upper surface of the crank (17) is slidably connected to a limit frame (18), and the outer wall of the limit frame (18) is fixedly connected to a slide plate (19).

6. An elevator maintenance anti-falling device according to claim 5, characterized in that: The outer wall of the slide plate (19) is slidably connected to a roller shaft (20), and the lower surface of the roller shaft (20) is fixedly connected to the upper surface of the fixed box (2).

7. An elevator maintenance anti-falling device according to claim 6, characterized in that: A coil (21) is fixedly connected to the upper surface of the slide plate (19).

8. An elevator maintenance anti-falling device according to claim 7, characterized in that: The outer wall of the fixing box (2) is fixedly connected to a fixing plate (22), and the inner wall of the fixing plate (22) is rotatably connected to a pulley (23).

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