A type of fall arrestor for elevator maintenance

Abstract

This utility model discloses an elevator maintenance fall arresting rod, belonging to the technical field of fall arresting rods. It includes a sleeve rod with telescopic rods slidably installed at both ends, and the sleeve rod and telescopic rods are fixedly connected by a clamping and locking mechanism. A suction cup fixing mechanism includes a base plate with symmetrically arranged wall suction cups at its upper and lower ends, and a floor suction cup fixedly installed on the telescopic rod. Its key technical points are: the length of the entire fall arresting rod can be adjusted by sliding the telescopic rod inwards and outwards to meet different usage needs and facilitate carrying and movement; the clamping and locking mechanism provides sufficient friction to prevent relative sliding between the sleeve rod and the telescopic rod, keeping the overall length of the fall arresting rod constant and improving stability during use; furthermore, the wall suction cups and floor suction cups work together to stably fix the ends of the telescopic rod, further improving the reliability of the fall arresting rod during use.

Description

Technical Field

[0001] This utility model relates to the field of fall arrestor technology, specifically a fall arrestor for elevator maintenance. Background Technology

[0002] Elevator fall prevention during maintenance is of paramount importance, concerning the lives of maintenance personnel and the stability of operations. During maintenance, existing elevator safety devices may be adjusted or disabled, such as brakes and safety clamps, significantly increasing the risk of accidental car falls. A fall would pose a serious threat of injury or death to maintenance personnel and cause further damage to the equipment. Implementing fall prevention measures, such as installing fall arrest bars and using safety locks, can reliably secure the car physically, forming a protective barrier independent of the original safety system. This not only provides a safe working environment for maintenance personnel, preventing catastrophic accidents such as falls from heights, but also ensures the orderly conduct of maintenance work and guarantees the safe operation of the elevator afterwards.

[0003] Utility model patent CN222556255U discloses an elevator maintenance anti-fall rod. Its structure includes a connecting shaft with square tubes fixedly connected to both ends. A groove is formed at the connecting shaft between the two square tubes. The square tubes have a hollow internal structure and open ends. A telescopic rod is movably connected to the open end of the square tube away from the connecting shaft, and a support rod is provided at the lower end of the telescopic rod. A rotating component is provided between the telescopic rod and the support rod. This application, by having the support rod perpendicular to the square tubes, can form a stable structure to stabilize the locking and fixing device at the corner of the elevator door. It also has a storage structure that can store the rotating support rod into a storage groove, and then completely store the telescopic rod inside the square tube.

[0004] While the aforementioned device can engage with the elevator door corner via a snap-fit ​​structure to ensure the stability of the fall arrestor, the lack of effective fixing measures between the square tube and the telescopic rod allows for relative sliding between them during use. The fixation method, which uses a snap-fit ​​to fix the position of the support rod and square tube, is unstable and prone to detachment during use, causing the snap-fit ​​to fail. When the snap-fit ​​fails, the lack of constraint between the steel pipe and the telescopic rod can cause the telescopic rod to slide inward, resulting in the ends of the fall arrestor failing to provide a fall arrest function. In the event of an accident, the entire fall arrestor may fall directly through the elevator shaft opening, causing serious consequences. Therefore, to address these issues, a fall arrestor for elevator maintenance is proposed. Utility Model Content

[0005] To address the technical problems of the lack of fixing measures in the telescopic structure of the anti-fall bar in the comparative technology, which easily leads to the loss of the anti-fall bar's overall anti-fall function due to the inward retraction of the telescopic bar after the locking function fails, and the lack of effective connection measures between the two ends of the anti-fall bar and the existing structure, resulting in insufficient stability during use, this utility model provides an anti-fall bar for elevator maintenance.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] An elevator maintenance fall arrestor includes a sleeve rod with telescopic rods slidably installed at both ends, and fixedly connected to the telescopic rods by a clamping and locking mechanism; a suspension member fixedly installed in the middle of the sleeve rod for suspending a safety rope; and a suction cup fixing mechanism installed at the end of the telescopic rod for adsorbing and fixing the end of the telescopic rod to a wall and the ground; wherein the suction cup fixing mechanism includes a base plate with symmetrically arranged wall suction cups installed at both its upper and lower ends, and also includes a floor suction cup fixedly installed on the telescopic rod.

[0008] In one possible implementation, the substrate and the wall suction cup are positioned on the side opposite to the hanging member, and the floor suction cup is arranged vertically downwards.

[0009] In one possible implementation, sliding grooves are provided at both ends of the sleeve rod, and symmetrically arranged limiting sliders are fixedly provided on the outer wall of the telescopic rod, wherein the limiting sliders are slidably disposed in the sliding grooves.

[0010] In one possible implementation, the clamping and locking mechanism includes a mating screw fixedly mounted on the limiting slider, on which a threaded locking wheel is sleeved.

[0011] In one possible implementation, a rough-surfaced anti-slip pad ring is fixedly provided on the sleeve rod, which surrounds the periphery of the sliding groove, and its lower end face is in contact with the anti-slip pad ring when the locking wheel is tightened.

[0012] In one possible implementation, the wall adsorption plate includes a plate shell, which is mounted on a substrate by a mounting plate fixed at its end. The plate shell contains an inner rubber plate on which a tension screw is rotatably connected, and the tension screw is threadedly connected to the substrate.

[0013] In one possible implementation, the floor suction cup includes a threaded cylindrical seat fixedly mounted on a telescopic rod, through which a threaded extrusion screw passes, and a rubber suction cup is rotatably connected to the bottom end of the extrusion screw.

[0014] In one possible implementation, the sleeve is provided with two sets of symmetrically arranged suspension members, each including a hanging ring, which is welded to the sleeve via a connecting piece.

[0015] In one possible implementation, two symmetrically arranged reinforcing ribs are welded to the side of the sleeve away from the suspension component.

[0016] In summary, this utility model has the following beneficial technical effects:

[0017] The main body of the fall arrestor consists of a sleeve and a telescopic rod that slides through it. The length of the entire fall arrestor can be adjusted by sliding the telescopic rod inward and outward to meet different usage needs. When carrying, the telescopic rod can be slid to the innermost position to significantly reduce the length of the entire fall arrestor, making it easy to carry and move.

[0018] Since the sleeve rod and the telescopic rod are locked together by a clamping and locking mechanism, after adjustment, the locking wheel in the clamping and locking mechanism can be turned to make it fit tightly against the anti-slip pad ring on the sleeve rod, thereby providing sufficient friction to constrain the relative sliding between the sleeve rod and the telescopic rod, so that the overall length of the anti-fall rod remains unchanged, which can improve the stability during use.

[0019] In addition, a suction cup fixing mechanism is provided at the end of the telescopic rod, which includes a wall suction cup and a floor suction cup. The wall suction cup is used to attach the end of the telescopic rod to the wall outside the elevator shaft, while the floor suction cup is used to further connect to the ground. This enables stable fixing of the end of the telescopic rod and further improves the reliability of the fall arrestor during use. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the suction cup fixing mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the floor adsorption plate structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the wall-mounted adsorption plate structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the suspension component structure of this utility model.

[0027] In the diagram: 1. Sleeve rod; 11. Sliding groove; 12. Reinforcing rib; 2. Telescopic rod; 21. Limiting slider; 3. Pressing and locking mechanism; 31. Matching screw; 32. Locking wheel; 4. Suspension component; 41. Hanging ring; 42. Connecting piece; 5. Suction cup fixing mechanism; 51. Base plate; 52. Wall suction cup; 521. Cup outer shell; 522. Mounting plate; 523. Inner rubber plate; 524. Tensioning screw; 53. Floor suction cup; 531. Threaded sleeve seat; 532. Extrusion screw; 533. Rubber suction cup; 6. Anti-slip pad ring. Detailed Implementation

[0028] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0029] like Figure 1 - Figure 2 As shown, this embodiment provides an elevator maintenance anti-fall rod, including a sleeve rod 1, with telescopic rods 2 slidably arranged inside both ends of the sleeve rod 1, and the sleeve rod 1 and the telescopic rods 2 are fixedly connected by a clamping locking mechanism 3; a suspension member 4 is fixedly arranged in the middle of the sleeve rod 1 for suspending a safety rope.

[0030] Based on the above structural design, since the main body of the fall arresting rod consists of a sleeve rod 1 and a telescopic rod 2 slidably connected to it, the length of the entire fall arresting rod can be adjusted by sliding the telescopic rod 2 inwards and outwards to meet different usage needs. Furthermore, when carrying it, the telescopic rod 2 can be slid to its innermost position to significantly reduce the overall length of the fall arresting rod, making it easier to carry and move. In addition, since the sleeve rod 1 and the telescopic rod 2 are locked together by a clamping locking mechanism 3, sufficient friction can be provided after adjustment to prevent relative sliding between the sleeve rod 1 and the telescopic rod 2, so that the overall length of the fall arresting rod remains unchanged, thereby improving stability during use.

[0031] Among them, such as Figure 2 As shown, both ends of the sleeve rod 1 are provided with sliding grooves 11, and the outer wall of the telescopic rod 2 is fixedly provided with symmetrically arranged limiting sliders 21. The limiting sliders 21 are slidably disposed in the sliding grooves 11. In the above structure, the sliding range of the telescopic rod 2 can be constrained by the cooperation between the limiting sliders 21 and the sliding grooves 11, preventing it from sliding to an extreme position and causing the connection between it and the sleeve rod 1 to become unreliable. The clamping and locking mechanism 3 includes a mating screw 31 fixedly disposed on the limiting slider 21, on which a threaded locking wheel 32 is sleeved. After adjustment, by turning the locking wheel 32 in the clamping and locking mechanism 3, it is tightly fitted with the sleeve rod 1, thereby providing sufficient friction to constrain the relative sliding between the sleeve rod 1 and the telescopic rod 2, so that the overall length of the anti-fall rod remains unchanged, which can improve the stability during use.

[0032] In addition, to further enhance the friction between the locking wheel 32 and the sleeve rod 1 and prevent slippage during use, such as Figure 2 As shown, a rough-surfaced anti-slip pad ring 6 is fixedly installed on the sleeve rod 1, which surrounds the sliding groove 11. When the locking wheel 32 is tightened, its lower end face is in contact with the anti-slip pad ring 6. The anti-slip pad ring 6 can significantly increase the friction between the locking wheel 32 and the sleeve rod 1, making it less likely for the locking wheel 32 to slip during use and cause its restraining effect to fail.

[0033] To effectively fix both ends of the telescopic pole and further improve its stability and reliability during use, such as... Figure 3 - Figure 5 As shown in the figure, the elevator maintenance anti-fall rod provided in this embodiment also includes a suction cup fixing mechanism 5, which is installed at the end of the telescopic rod 2 to adsorb and fix the end of the telescopic rod 2 to the wall and the ground. The suction cup fixing mechanism 5 includes a base plate 51, on which wall adsorption plates 52 are symmetrically arranged at both the upper and lower ends. It also includes a floor adsorption plate 53 fixedly set on the telescopic rod 2. The base plate 51 and the wall adsorption plates 52 are arranged on the side away from the suspension member 4, and the floor adsorption plate 53 is arranged vertically downward. In the above structural composition and arrangement, the wall adsorption plate 52 is used to adsorb and fix the end of the telescopic rod 2 to the wall outside the elevator shaft, while the floor adsorption plate 53 is used to further connect to the ground, thereby achieving stable fixation of the end of the telescopic rod 2 and further improving the reliability of the anti-fall rod during use.

[0034] The wall adsorption tray 52 includes a tray shell 521, which is mounted on a base plate 51 by a mounting plate 522 fixed at the end. The tray shell 521 has an inner adhesive tray 523 inside, on which a tension screw 524 is rotatably connected. The tension screw 524 is threadedly connected to the base plate 51. When the tray shell 521 is pressed against the wall, the tension screw 524 can be turned to apply a pulling force to the inner adhesive tray 523, reducing the internal air pressure and generating an adsorption force, so that the wall adsorption tray 52 can achieve adhesion and adsorption to the wall.

[0035] The floor suction cup 53 includes a threaded cylindrical seat 531 fixedly mounted on the telescopic rod 2, through which a threaded extrusion screw 532 passes. A rubber suction cup 533 is rotatably connected to the bottom end of the extrusion screw 532. By turning the extrusion screw 532, the rubber suction cup 533 can be pushed down until it is in contact with the ground. Then, by continuing to turn the extrusion screw 532, the rubber suction cup 533 can be squeezed to deform and expel the gas inside, so as to achieve the adsorption and fixation effect.

[0036] like Figure 6As shown, the sleeve rod 1 is provided with two sets of symmetrically arranged suspension members 4, which include a hanging ring 41. The hanging ring 41 is welded to the sleeve rod 1 through a connecting piece 42. Since there are two sets of suspension members 4, it has a certain redundancy and safety effect. After the connecting piece 42 of one set of suspension members 4 falls off the sleeve rod 1, the other set of suspension members 4 provides tension to prevent it from falling.

[0037] like Figure 2 As shown, two symmetrically arranged reinforcing ribs 12 are welded to the side of the sleeve rod 1 away from the suspension component 4. The reinforcing ribs 12 can enhance the overall bending strength of the sleeve rod 1, making it less prone to deformation when the sleeve rod 1 is subjected to a strong impact due to a fall, thereby providing stable support and ensuring reliability during use.

[0038] The working principle and usage process of this utility model:

[0039] During use, the length of the fall arrestor can be adjusted according to the site conditions. Specifically, the length of the fall arrestor can be adjusted by sliding the telescopic rod 2 inward and outward to meet different usage requirements. After adjustment, the locking wheel 32 in the clamping and locking mechanism 3 is turned to make it fit tightly with the anti-slip pad ring 6 set on the sleeve rod 1, thereby providing sufficient friction to prevent relative sliding between the sleeve rod 1 and the telescopic rod 2, so that the overall length of the fall arrestor remains unchanged, which can improve the stability during use.

[0040] Subsequently, by turning the tension screw 524, a pulling force can be applied to the inner rubber disc 523, reducing its internal air pressure and generating an adsorption force, so that the wall adsorption disc 52 can adhere to the wall. By turning the extrusion screw 532, the rubber suction cup 533 can be pushed down until it adheres to the ground. Then, by continuing to turn the extrusion screw 532, the rubber suction cup 533 can be squeezed to deform and expel the gas inside, so as to achieve the adsorption and fixation function, thereby completing the reliable constraint on the end of the telescopic rod 2 and ensuring its stability during use.

[0041] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An anti-falling lever for elevator maintenance, characterized by, include: The sleeve rod (1) has telescopic rods (2) slidably installed inside both ends, and is fixedly connected to the telescopic rods (2) by a pressing and locking mechanism (3); The suspension component (4) is fixedly installed in the middle of the sleeve rod (1) to suspend the safety rope; The suction cup fixing mechanism (5) is installed at the end of the telescopic rod (2) to attach the end of the telescopic rod (2) to the wall and the ground. The suction cup fixing mechanism (5) includes a base plate (51), on which wall suction cups (52) are symmetrically arranged at both the upper and lower ends, and also includes a floor suction cup (53) fixed on the telescopic rod (2).

2. The anti-falling rod for elevator maintenance according to claim 1, characterized in that: The substrate (51) and the wall adsorption plate (52) are disposed on the side away from the hanging member (4), and the floor adsorption plate (53) is arranged vertically downward.

3. The anti-falling rod for elevator maintenance according to claim 1, characterized in that: The sleeve rod (1) has sliding grooves (11) at both ends, and the telescopic rod (2) has symmetrically arranged limiting sliders (21) fixedly installed on its outer wall, wherein the limiting sliders (21) are slidably installed in the sliding grooves (11).

4. The anti-falling rod for elevator maintenance according to claim 3, characterized in that: The clamping and locking mechanism (3) includes a mating screw (31) fixedly mounted on the limiting slider (21), and a locking wheel (32) with a threaded connection is sleeved on it.

5. The fall arrest bar for elevator repair of claim 4, wherein: A rough anti-slip pad ring (6) is fixedly installed on the sleeve rod (1), which surrounds the sliding groove (11). When the locking wheel (32) is tightened, its lower end face is in contact with the anti-slip pad ring (6).

6. The fall arrest bar for elevator repair of claim 1, wherein: The wall adsorption plate (52) includes a plate shell (521), which is mounted on a base plate (51) by a mounting plate (522) fixed at the end. The plate shell (521) is provided with an inner rubber plate (523), on which a tension screw (524) is rotatably connected, and the tension screw (524) is threadedly connected to the base plate (51).

7. The anti-falling rod for elevator maintenance according to claim 1, characterized in that: The floor suction cup (53) includes a threaded cylindrical seat (531) fixedly mounted on the telescopic rod (2), through which a threaded extrusion screw (532) is threadedly connected, and a rubber suction cup (533) is rotatably connected to the bottom end of the extrusion screw (532).

8. The fall arrest bar for elevator repair of claim 1, wherein: The sleeve rod (1) is provided with two sets of symmetrically arranged suspension members (4), which include hanging rings (41), and the hanging rings (41) are welded to the sleeve rod (1) through connecting pieces (42).

9. The fall arrest bar for elevator repair of claim 1, wherein: Two symmetrically arranged reinforcing ribs (12) are welded to the side of the sleeve (1) away from the suspension component (4).

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