Anti-shaking device for traction steel wire rope

Abstract

The invention discloses an anti-shaking device for a traction steel wire rope. The anti-shaking device comprises at least one range finder, a controller and at least one pair of telescopic dampers, the distance measuring instrument is fixed in the hoistway and is used for measuring the distance between the traction steel wire rope and the distance measuring instrument; the controller receives measurement data of the distance measuring instrument and the position and the running direction of the elevator car. The telescopic damper is rotatably fixed in the hoistway; when the pair of telescopic dampers is located at the unfolding position, the traction steel wire rope at the pair of telescopic dampers does not shake out of the limiting range of the pair of telescopic dampers. When the pair of telescopic dampers is located at the folded position, the pair of telescopic dampers do not interfere with the operation space of the elevator car. The controller calculates the shaking amount of the traction steel wire rope according to the measurement data of the range finder; and when the shaking amount exceeds a preset threshold value, the controller controls the telescopic damper to be located at the unfolding position or the folding position according to the position, the running direction and the rated speed of the elevator car.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, and in particular to an anti-sway device for a traction steel wire rope. Background Art

[0002] In the elevator system, the traction wire rope is the component that enables the elevator to move up and down, and its shaking during operation needs special attention. On the one hand, the increase in running speed will easily cause the traction wire rope to shake; on the other hand, extreme weather will cause the building to shake, which will also cause the traction wire rope to shake.

[0003] At present, the anti-sway measures for the elevator traction wire rope can be roughly divided into two ideas: monitoring and warning the swaying amount of the wire rope and physically constraining the swaying path of the wire rope.

[0004] As for the method of monitoring and warning the sway of the wire rope, the state of the traction wire rope is monitored through a vibration prediction mathematical model or a visual device. When the sway exceeds a set threshold, the elevator slows down or stops nearby.

[0005] As for the method of constraining the wire rope swinging path, a constraining component is added in the swinging direction of the wire rope to reduce the free swinging stroke of the wire rope.

[0006] Chinese patent document CN112105575B discloses a technical solution, which introduces a monitoring subsystem into the elevator system. By monitoring the building sway, when the building sway exceeds the set reference value, the wire rope sway of the building resonance layer is estimated. If it exceeds the threshold, the elevator will slow down or stop nearby. It has the following problems:

[0007] 1) When the monitoring system finds that the wire rope is shaking a lot, it can only slow down the elevator or stop the elevator nearby, but cannot solve the problem of wire rope shaking;

[0008] 2) The mathematical model for wire rope vibration prediction is complex, and the reliability of the model cannot be directly evaluated in different environments.

[0009] Chinese patent document CN113620141A discloses a technical solution, which places multiple horizontally movable damping components in the height direction inside the hoistway, and the damping components include four dampers in parallel, so as to restrain the shaking of the traction wire rope. Among them, when the car moves up and down and approaches the damping component, the damper moves in the opposite direction under the action of the controller and the actuator device, and the distance between the dampers is increased, so that the car can pass smoothly. The disclosed technology has the following problems: 1) When the car approaches the damper, the damping component needs to move in the opposite direction to avoid the car, which has high requirements for the plane space of the hoistway; 2) There are other flexible bodies that penetrate the hoistway in the hoistway, and these flexible bodies also move themselves, which are easy to interfere with the damping components. Summary of the invention

[0010] In order to solve the above technical problems, the present invention provides a traction wire rope anti-sway device, comprising at least one rangefinder, a controller and at least one pair of telescopic dampers;

[0011] The distance meter is fixed in the hoistway to measure the distance between the traction wire rope and the distance meter;

[0012] The controller receives the measurement data of the distance meter, as well as the position and running direction of the elevator car;

[0013] The telescopic dampers are rotatably fixed in the hoistway; when the pair of telescopic dampers are in the extended position, the traction wire rope at the pair of telescopic dampers can be prevented from shaking beyond the limit range of the pair of telescopic dampers; when the pair of telescopic dampers are in the retracted position, the pair of telescopic dampers do not interfere with the running space of the elevator car;

[0014] The controller calculates the sway of the traction wire rope according to the measurement data of the distance meter; when the sway exceeds a preset threshold, the controller controls the telescopic damper to be in the extended position or the retracted position according to the position, running direction and rated speed of the elevator car.

[0015] Preferably, the distance meter includes a plurality of distance measuring transmitters, and can measure a plurality of traction steel ropes simultaneously.

[0016] Preferably, the controller is communicatively connected to an elevator control system, and obtains position and speed information of the elevator car from the elevator control system.

[0017] Preferably, the telescopic damper has a rotator, and the rotator drives the telescopic damper to rotate.

[0018] Preferably, the rotator is fixed on a guide rail or a shaft wall.

[0019] Preferably, the rangefinder is fixed on the hoistway wall below the floor door footboard of the preset floor station.

[0020] Preferably, when the shaking amount exceeds a preset threshold, if the elevator car moves downward and the position of the elevator car is lower than a telescopic damper, the controller controls the telescopic damper to be in the deployed position.

[0021] Preferably, when the shaking amount exceeds a preset threshold, if the elevator car goes up, the controller calculates in real time the height difference L between the elevator car and the telescopic damper located higher than the elevator car. If L / V>20, the controller controls the telescopic damper to be in the deployed position; wherein L is in meters, and V is the rated speed of the elevator car in meters per second.

[0022] Preferably, when the shaking amount exceeds a preset threshold, if the elevator car goes up, the controller calculates in real time the height difference L between the elevator car and a telescopic damper located higher than the elevator car. If L / V≤20, and the telescopic damper is currently in the retracted position, the controller controls the telescopic damper to remain in the retracted position; wherein L is in meters, and V is the rated speed of the elevator car in meters per second.

[0023] Preferably, when the shaking amount exceeds a preset threshold, if the elevator car goes up, the controller calculates in real time the height difference L between the elevator car and a telescopic damper located higher than the elevator car. If L / V≤10, the controller controls the telescopic damper to be in the retracted position; wherein L is in meters, and V is the rated speed of the elevator car in meters per second. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0025] Figure 1 It is a structural schematic diagram of the traction wire rope anti-sway device of Example 1;

[0026] Figure 2 This is a schematic diagram of the installation position of the rangefinder in Example 1;

[0027] Figure 3 It is a schematic diagram of the telescopic damper of the traction wire rope anti-sway device of Example 1 when it is in the deployed position;

[0028] Figure 4 This is a schematic diagram of the telescopic damper of the traction wire rope anti-sway device of Example 1 when it is in the retracted position. DETAILED DESCRIPTION

[0029] The following describes the implementation methods of the present invention through specific specific embodiments, and those skilled in the art can fully understand other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific implementation methods, and the details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the overall design concept of the invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other in the absence of conflict. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art.

[0030] Example 1

[0031] The present invention provides a traction wire rope anti-sway device, comprising at least one distance meter, a controller and at least one pair of telescopic dampers. Figure 1 and Figure 2 As shown, this embodiment is described by taking a plurality of rangefinders 1 and a pair of telescopic dampers 5 and 6 as an example.

[0032] Laser rangefinders 1 are installed in holes in the shaft wall below the specified limited number of shaft floor door toe plates to ensure that when the traction steel rope is stationary, each rangefinder 1 can measure the distance between the traction steel rope on the car side and the rangefinder. Each rangefinder 1 includes multiple distance transmitters and can measure multiple traction steel ropes at the same time.

[0033] like Figure 3 to Figure 4 As shown, the telescopic dampers 5 and 6 are rotatably fixed in the hoistway; when the pair of telescopic dampers 5 and 6 are in the extended position, the swaying of the traction wire rope at the pair of telescopic dampers can be prevented from exceeding the limit range of the pair of telescopic dampers; when the pair of telescopic dampers are in the retracted position, the pair of telescopic dampers do not interfere with the running space of the elevator car;

[0034] The telescopic dampers 5 and 6 have rotators 3 and 4, which respectively drive the rotation of the telescopic dampers 5 and 6. The rotators 3 and 4 have mounting brackets 7 and 8; the rotators are fixedly connected to the telescopic dampers, and the rotators are fixed to the guide rails or the shaft wall through the mounting brackets, and the rotators are rotatably connected to the mounting brackets.

[0035] The controller 2 receives the measurement data of the distance meter 1, as well as the position and running direction of the elevator car; the controller 2 is connected to the elevator control system for communication, and obtains the position and speed information of the elevator car from the elevator control system.

[0036] The controller 2 calculates the sway of the traction wire rope based on the measurement data of the distance meter 1, for example, taking the average value of the distance change between the traction wire rope on the car side and the distance meter within a preset time period as the sway; when the sway exceeds the preset threshold, the controller controls the telescopic damper to be in the extended position or the retracted position according to the position, running direction and rated speed of the elevator car.

[0037] The telescopic dampers 5 and 6 themselves have a telescopic mechanism, which extends the telescopic dampers when the telescopic dampers are in the deployed position, and shortens the telescopic dampers when the telescopic dampers are in the retracted position. The telescopic mechanism is deployed or retracted before the telescopic dampers reach the deployed position or the retracted position.

[0038] The following specifically describes how the controller controls the telescopic damper to be in the extended position or the retracted position according to the position, running direction and rated speed of the elevator car when the sway amount exceeds a preset threshold.

[0039] When the shaking amount exceeds a preset threshold, if the elevator car moves downward and the position of the elevator car is lower than the telescopic damper, the controller controls the telescopic damper to be in the deployed position.

[0040] When the shaking amount exceeds the preset threshold, if the elevator car is going up, the controller calculates the height difference L (in m) between the elevator car and the telescopic damper located higher than the elevator car in real time. If L / V>20 (where V is the rated speed of the elevator, in m / s), and the telescopic damper is currently in the retracted position, the controller 2 instructs the rotator to rotate 90°, so that the telescopic damper moves from the retracted position to the extended position, and the controller instructs the telescopic damper to extend. If L / V≤20, and the telescopic damper is currently in the retracted position, the controller 2 instructs the rotator not to rotate, so that the telescopic damper remains in the retracted position to avoid the elevator car.

[0041] When the shaking amount exceeds the preset threshold, if the elevator car goes up, the control device calculates in real time the height difference L between the elevator car and the telescopic damper which is higher than the elevator car. If L / V≤10, the controller controls the telescopic damper to be in the retracted position; that is, if the telescopic damper is in the extended position at this time, the telescopic damper is controlled to move from the extended position to the retracted position. If the telescopic damper is in the retracted position at this time, the telescopic damper is kept in the retracted position to avoid the elevator car.

[0042] Compared with the prior art, this embodiment has the following technical effects:

[0043] 1. The telescopic damper is used to constrain the traction wire rope when it is in the deployed position, so that the swaying of the traction wire rope does not exceed the limit range of the telescopic damper, thereby suppressing the swaying of the wire rope;

[0044] 2. By installing the telescopic damper near the guide rail or the shaft wall, and the telescopic damper is short in length in the contracted state, the device of the present invention has low requirements for shaft space.

[0045] 3. The telescopic damper only needs to rotate and retract, and it responds quickly to suppress the shaking of the wire rope and has high controllability.

[0046] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A traction wire rope anti-sway device, characterized in that: including at least one rangefinder, a controller and at least one pair of telescopic dampers; The distance meter is fixed in the hoistway to measure the distance between the traction wire rope and the distance meter; The controller receives the measurement data of the distance meter, as well as the position and running direction of the elevator car; The telescopic dampers are rotatably fixed in the hoistway; when the pair of telescopic dampers are in the extended position, the traction wire rope at the pair of telescopic dampers can be prevented from shaking beyond the limit range of the pair of telescopic dampers; when the pair of telescopic dampers are in the retracted position, the pair of telescopic dampers do not interfere with the running space of the elevator car; The controller calculates the sway of the traction wire rope according to the measurement data of the distance meter; when the sway exceeds a preset threshold, the controller controls the telescopic damper to be in the extended position or the retracted position according to the position, running direction and rated speed of the elevator car.

2. The traction wire rope anti-sway device according to claim 1, characterized in that: The distance meter comprises a plurality of distance measuring transmitters and can measure a plurality of traction steel wire ropes at the same time.

3. The traction wire rope anti-sway device according to claim 1, characterized in that: The controller is in communication connection with the elevator control system and obtains the position and speed information of the elevator car from the elevator control system.

4. The traction wire rope anti-sway device according to claim 1, characterized in that: The telescopic damper has a rotator, and the rotator drives the rotation of the telescopic damper. The telescopic damper can be expanded or retracted while rotating, and the expansion or retraction is completed before reaching the expanded position or the retracted position.

5. The traction wire rope anti-sway device according to claim 1, characterized in that: The rotator is fixed on the car side guide rail or the hoistway wall.

6. The traction wire rope anti-sway device according to claim 1, characterized in that: The distance meter is fixed on the shaft wall at the lower part of the floor door footboard of the preset floor station.

7. The traction wire rope anti-sway device according to claim 1, characterized in that: When the shaking amount exceeds a preset threshold, if the elevator car moves downward and the position of the elevator car is lower than a telescopic damper, the controller controls the telescopic damper to be in the extended position.

8. The traction wire rope anti-sway device according to claim 1, characterized in that: When the shaking amount exceeds the preset threshold, if the elevator car goes up, the controller calculates in real time the height difference L between the elevator car and the telescopic damper which is higher than the elevator car. If L / V>20, the controller controls the telescopic damper to be in the deployed position; L is in meters, and V is the rated speed of the elevator car in meters per second.

9. The traction wire rope anti-sway device according to claim 1, characterized in that: When the shaking amount exceeds the preset threshold, if the elevator car goes up, the controller calculates in real time the height difference L between the elevator car and the telescopic damper which is higher than the elevator car. If L / V≤20 and the telescopic damper is currently in the retracted position, the controller controls the telescopic damper to remain in the retracted position; L is in meters, and V is the rated speed of the elevator car in meters per second.

10. The traction wire rope anti-sway device according to claim 1, characterized in that: When the shaking amount exceeds the preset threshold, if the elevator car goes up, the controller calculates in real time the height difference L between the elevator car and the telescopic damper located higher than the elevator car. If L / V≤10, the controller controls the telescopic damper to be in the retracted position; L is in meters, and V is the rated speed of the elevator car in meters per second.

Images