CN219708981U - Elevator traction rope clamping device - Google Patents

Abstract

The utility model provides a rope clamping device for an elevator hoisting rope, which relates to the technical field of elevators and comprises a rope clamping device and two rope clamping plates, wherein the two rope clamping plates are arranged on the rope clamping device in parallel, the distance between the two rope clamping plates is adjustable, and the upper end and the lower end of each rope clamping plate are provided with a one-way locking and braking structure which is used for locking a sliding steel wire rope; the unidirectional locking braking structure comprises a limiting block, a locking block and a resetting component, wherein the limiting block is arranged at the end part of the rope clamping plate, an inclined plane groove which is in sliding fit with the locking block is formed in one side of a clamping surface of the rope clamping plate, which is close to the limiting block, and the resetting component is used for driving the locking block to slide in the inclined plane groove for resetting. The utility model provides a rope clamping device for an elevator hoisting rope, which increases the locking effect of unidirectional movement on an elevator steel wire rope and reduces accidents through a limiting block, a locking block and a resetting component.

Description

Elevator traction rope clamping device

Technical Field

The utility model relates to the technical field of elevators, in particular to a rope clamping device for an elevator traction rope.

Background

For conventional elevators, it is necessary to use a speed limiter to monitor and control the overspeed of the car downwards at any time, but with the use of the elevator it is found that the risk of car overspeed upwards and of a roof-punching does exist, because the counterweight side weight is greater than the car when the car is empty or very little loaded, and as soon as the brake fails or the hoisting machine shaft, keys, pins etc. break, or the hoisting ropes slip in them due to severe wear of the hoisting sheave rope grooves, whereby the overspeed of the car upwards occurs. According to the specification of GB7588-2003, the traction drive elevator should be provided with an upward overspeed protection arrangement comprising speed monitoring and decelerating elements, which are able to detect an uncontrolled speed of the upward car, and which are able to stop the car or at least to bring its speed down to the permitted use range of the counterweight buffer when the car speed is greater than or equal to 115% of the rated speed of the elevator. The device should act on the car, counterweight, wire rope system (suspension rope or compensation rope) or traction sheave, and when the device is operated, the electrical safety device should be operated or the control circuit should be de-energized, the motor stops operating, and the brake is operated, so that the rope gripper occurs.

The rope gripper directly applies a braking force to the hoisting wire rope. The rope gripper is generally installed on a traction machine frame between a traction sheave and a guide sheave in a machine room, and is also installed at the lower part of the guide sheave, but the installation must be ensured to be firm and reliable. According to the different trigger devices of the rope clamp, the rope clamp is divided into two types of mechanical triggering (brake wire pulling, the rope clamp is directly driven by a speed limiter action mechanism to act by a lifting steel wire flexible shaft) and electromagnetic triggering (after overspeed, the speed limiter sends out an electric signal, the rope clamp presses a rope block to act, and a traction steel wire rope is clamped to implement braking).

The current elevator rope clamping device clamps an elevator steel wire rope through two brake blocks, plays an effect of decelerating or even stopping moving the elevator steel wire rope through friction force, but when the elevator load is large or no load, when the elevator car runs at overspeed, relative sliding can occur between the elevator steel wire rope and the brake blocks, and the decelerating and stopping effects are poor.

Disclosure of Invention

Based on the technical problems in the background technology, the utility model provides a rope clamping device for an elevator traction rope.

The utility model provides a rope clamping device for an elevator hoisting rope, which comprises a rope clamping device and two rope clamping plates, wherein the two rope clamping plates are arranged on the rope clamping device in parallel, the distance between the two rope clamping plates is adjustable, the upper end and the lower end of each rope clamping plate are respectively provided with a one-way locking and braking structure, and the one-way locking and braking structures are used for locking a sliding steel wire rope;

the unidirectional locking braking structure comprises a limiting block, a locking block and a resetting component, wherein the limiting block is arranged at the end part of the rope clamping plate, an inclined plane groove which is in sliding fit with the locking block is formed in one side of a clamping surface of the rope clamping plate, which is close to the limiting block, and the resetting component is used for driving the locking block to slide in the inclined plane groove for resetting.

Preferably, the reset component comprises a limit rod and a spring; the utility model discloses a rope clamp, including rope clamp board, stop lever, locking piece, spring and spring, the terminal surface at rope clamp board is connected to the gag lever post slope, the inclined plane parallel arrangement in gag lever post and inclined plane groove, the tip of locking piece has been seted up with stop lever sliding fit, the spring is located, and the both ends of spring respectively with tip inner wall, the end connection of gag lever post.

Preferably, one of the rope clamping plates is fixedly mounted on the rope clamp.

Preferably, when the locking block is in an initial position state in the inclined plane groove, the clamping surface on the locking block and the clamping surface of the rope clamping plate are in the same plane.

Preferably, when the locking block slides towards the end of the rope clamping plate along the inclined plane of the inclined plane groove, the clamping surface on the locking block exceeds the clamping surface on the rope clamping plate.

Preferably, the clamping surfaces of the rope clamping plate and the locking block are provided with anti-skid patterns.

The utility model has the following beneficial effects: through stopper, locking piece and the subassembly that resets that sets up, increase the locking effect to elevator wire rope's the unidirectional motion that carries out, reduce the emergence of unexpected accident.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a rope gripper for elevator hoisting ropes according to the present utility model;

fig. 2 is a structural cross-sectional view of a one-way locking braking structure at both ends of a rope clamping plate in a rope clamping device for an elevator hoisting rope according to the present utility model;

fig. 3 is a position structure diagram of a rope clamping plate and a limiting block in a rope clamping device of an elevator hoisting rope when the limiting block slides downwards;

fig. 4 is a position structure diagram of a rope clamping plate and a limiting block in a rope clamping device of an elevator hoisting rope when the limiting block slides upwards;

fig. 5 is a schematic view of the structure of a locking block in a rope gripper for elevator hoisting ropes according to the present utility model.

In the figure: 1. a rope gripper; 2. rope clamping plates; 3. a limiting block; 4. a locking block; 5. a limit rod; 6. and (3) a spring.

Detailed Description

Referring to fig. 1-5, the utility model provides a rope clamping device for an elevator hoisting rope, which comprises a rope clamping device 1 and two rope clamping plates 2, wherein the two rope clamping plates 2 are mutually parallel and arranged on the rope clamping device 1, the distance between the two rope clamping plates 2 is adjustable, and the upper end and the lower end of the rope clamping plates 2 are respectively provided with a unidirectional locking braking structure.

The unidirectional locking braking structure comprises a limiting block 3, a locking block 4 and a resetting component, wherein the limiting block 3 is arranged at the end part of the rope clamping plate 2, one side of the limiting block 3, which is close to the clamping surface of the rope clamping plate 2, is provided with an inclined plane groove in sliding fit with the locking block 4, and the resetting component is used for driving the locking block 4 to slide and reset in the inclined plane groove.

The inclined surface groove is located at the inclined position conical surface, the outer circumferential surface of the locking block 4 is also the inclined position conical surface, the shape of the locking block 4 is as shown in fig. 5, the condition that the edges and corners are blocked can be reduced, and the sliding smoothness of the locking block 4 is ensured. Rope clamping grooves are further formed in the rope clamping plate 2 and the locking block 4, the contact area between the rope clamping plate and an elevator steel wire rope is increased, and friction force is increased, as shown in fig. 1. The locking blocks 4 at the top and the bottom of the rope clamping plate 2 are symmetrically arranged, and the specific structure is shown in figure 2. When the elevator fails, the elevator steel wire rope can be clamped by the two rope clamping plates 2, and simultaneously, the two rope clamping plates 2 drive the two limiting blocks 3 to synchronously approach, so that the locking blocks 4 are clamped on two sides of the steel wire rope, when the steel wire rope moves downwards rapidly, the clamping surfaces of the locking blocks 4 are in friction contact with the steel wire pipe, the steel wire rope drives the locking blocks 4 to slide downwards along the inclined surfaces of the inclined grooves, the locking blocks 4 positioned on two sides of the steel wire rope approach each other and clamp the steel wire rope more tightly, and the friction force between the locking blocks 4 and the steel wire rope is increased by increasing the clamping force, so that better buffering and stopping effects on the steel wire rope can be achieved; at this time, the locking block 4 at the bottom end of the rope clamping plate 3 does not play a role in buffering and stopping. When the steel wire rope moves upwards rapidly, the locking block 4 at the bottom end of the rope clamping plate 2 is arranged in the same way. The reset component is used for ensuring that the clamping surface of the locking block is flush with the clamping surface of the rope clamping plate 2 when the locking block 4 is in a normal state.

In a specific embodiment, the reset assembly comprises a limit rod 5 and a spring 6; the gag lever post 5 slope is connected at the terminal surface of pressing from both sides rope board 2, and gag lever post 5 and the inclined plane parallel arrangement of inclined plane groove, and 7 with gag lever post 5 sliding fit have been seted up to the tip of locking piece 4, and spring 6 is located 7, and the both ends of spring 6 respectively with the tip inner wall of 7, the end connection of gag lever post 5. The locking piece 4 can sleeve on the gag lever post 5 along the inclined plane of inclined plane groove, can restrict the position of locking piece 4, avoid locking piece 4 to break away from and press from both sides rope board 2, also can be in the clamping face parallel and level with the clamping face that presss from both sides rope board 2 through spring 6 drive locking piece 4.

In a specific embodiment, one of the rope clamps 2 is fixedly mounted on the rope clamp 1. The firmness of the rope clamping plates 2 can be ensured, and only one rope clamping plate 2 is driven to clamp.

In a specific embodiment, when the locking block 4 is in an initial position state in the inclined plane groove, the clamping surface on the locking block 4 and the clamping surface of the rope clamping plate 2 are in the same plane; when the locking block 4 slides to the end part of the rope clamping plate 2 along the inclined plane of the inclined plane groove, the clamping surface on the locking block 4 exceeds the clamping surface on the rope clamping plate 2.

In a specific embodiment, the clamping surfaces of the rope clamping plate 2 and the locking block 4 are provided with anti-skid patterns. The friction force between the locking block and the steel wire rope is increased, the buffering and stopping effects are improved, and meanwhile the steel wire rope can conveniently drive the locking block 4 to move downwards so as to achieve the clamping stopping effect.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The elevator hoisting rope clamping device is characterized by comprising a rope clamping device (1) and two rope clamping plates (2), wherein the two rope clamping plates (2) are arranged on the rope clamping device (1) in parallel, the distance between the two rope clamping plates (2) is adjustable, and the upper end and the lower end of the rope clamping plates (2) are provided with unidirectional locking braking structures which are used for locking sliding steel wire ropes;

the unidirectional locking braking structure comprises a limiting block (3), a locking block (4) and a resetting component, wherein the limiting block (3) is arranged at the end part of the rope clamping plate (2), an inclined plane groove which is in sliding fit with the locking block (4) is formed in one side of a clamping surface of the limiting block (3) close to the rope clamping plate (2), and the resetting component is used for driving the locking block (4) to slide and reset in the inclined plane groove.

2. Elevator hoisting rope gripper according to claim 1, characterized in that the return assembly comprises a limit lever (5) and a spring (6); the utility model discloses a rope clamp is characterized by comprising a rope clamping plate (2), a limiting rod (5), a limiting block (4), a spring (6) and a limiting rod (5), wherein the limiting rod (5) is obliquely connected to the end face of the rope clamping plate (2), the limiting rod (5) is parallel to the inclined plane of the inclined plane groove, the end part of the locking block (4) is provided with a part (7) which is in sliding fit with the limiting rod (5), and the two ends of the spring (6) are respectively connected with the inner wall of the end part of the limiting rod (7) and the end part of the limiting rod (5).

3. Elevator hoisting rope gripper according to claim 1, characterized in that one of the rope gripping plates (2) is fixedly mounted on the gripper (1).

4. Elevator hoisting rope gripper according to claim 2, characterized in that the gripping surface on the locking block (4) is in the same plane as the gripping surface of the rope gripping plate (2) when the locking block (4) is in the initial position state in the inclined plane groove.

5. Elevator hoisting rope gripper according to claim 4, characterized in that the gripping surface on the locking block (4) exceeds the gripping surface on the rope gripping plate (2) when the locking block (4) is slid closer to the end of the rope gripping plate (2) along the slope of the slope groove.

6. Elevator hoisting rope gripper according to claim 5, characterized in that the gripping surfaces of the gripping rope plates (2) and the locking blocks (4) are provided with anti-slip patterns.