Anti-shaking device for traction steel wire rope of elevator

Abstract

The invention discloses an anti-shaking device for an elevator traction steel wire rope. The anti-shaking device comprises an auxiliary traction system, a lift car side anti-shaking device and a counterweight side anti-shaking device. The auxiliary traction system comprises an auxiliary traction wheel, an auxiliary guide wheel and an anti-shaking device traction rope. The anti-shaking device hoisting rope is hung on the auxiliary traction wheel and the auxiliary guide wheel, one end of the anti-shaking device hoisting rope is connected with the lift car side anti-shaking device, and the other end of the anti-shaking device hoisting rope is connected with the counterweight side anti-shaking device; the auxiliary traction wheel is driven by an elevator traction machine to drive the lift car side anti-shaking device and the counterweight side anti-shaking device to ascend and descend in an elevator hoistway through the anti-shaking device traction rope. The lift car side anti-shaking device is arranged on the lift car side and guided by a lift car side guide rail, and the running direction of the lift car side anti-shaking device is the same as that of a lift car. The lift car side anti-shaking device is always located at the 1 / 2 position between the lift car and the top layer and used for limiting the shaking range of a traction steel wire rope on the upper portion of the lift car. The counterweight side anti-shaking device is arranged on the counterweight side and guided by a counterweight side guide rail, and the running direction of the counterweight side anti-shaking device is the same as that of a counterweight. The counterweight side anti-shaking device is always located at the 1 / 2 position between the counterweight and the top layer and used for limiting the shaking range of a traction steel wire rope on the upper portion of the counterweight.

Description

Technical Field

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

[0002] The traction wire rope is a flexible component. When the elevator is hoisted to a high height, the traction wire rope will shake during the high-speed operation of the elevator. The greater the hoisting height, the greater the shaking amplitude. In addition, super-high-rise buildings will also shake to a greater extent in windy weather. The shaking of the traction wire rope will be more severe after the superposition. At this time, flexible components such as the traction wire rope are prone to the risk of hooking and entanglement.

[0003] The existing technologies for preventing the traction wire rope from swaying mainly develop in two directions: active control and passive control. Active control generally uses detection means to obtain the swaying of the traction wire rope. When the swaying amplitude exceeds the set threshold, the elevator is slowed down or stopped. Although this method can avoid the risk of hooking and entanglement of flexible components, for super high-rise buildings, especially in areas with strong winds, frequent speed reduction or stopping will cause negative effects such as customer complaints. Passive control mostly uses limit devices to limit the swaying amplitude of the traction wire rope, while trying to prevent the limit device from invading the operating space of the car or counterweight.

[0004] The technical solution disclosed in Chinese patent document CN112105575B monitors the sway amplitude of the building and a certain section of the traction wire rope, and infers whether the sway amplitude of the traction wire rope exceeds the threshold value based on the model. If it exceeds the threshold value, it will be controlled. The disclosed technology has the following problems: 1) The detection result is an estimated value calculated by the model, which may be biased; 2) The sway amplitude of the traction wire rope can only be reduced by controlling the operation means such as deceleration or stopping the elevator, which has a negative impact on the customer's elevator experience.

[0005] The technical solution disclosed in Chinese patent document CN113620141A is to set a multi-level limit device on the running path of the car. The limit device can be moved horizontally by an actuator. When the car approaches, it moves toward the shaft wall to avoid the car. When the car moves away, it moves toward the wire rope, thereby limiting the shaking of the wire rope and avoiding the running car. The disclosed technology has the following problems: 1) The limit device needs to add an independent drive system, which is costly; 2) The limit device needs to be connected to the electrical system to determine the position of the car to avoid the running car, and the system is complicated; 3) If the detection system and the control system make mistakes or fail, there is a risk of collision between the limit device and the car. Summary of the invention

[0006] The technical problem to be solved by the present invention is how to provide a technical solution for preventing elevator traction wire rope from swaying with a simple structure and good anti-swaying effect.

[0007] In order to solve the above technical problems, the present invention provides an elevator traction wire rope anti-sway device, comprising an auxiliary traction system, a car side anti-sway device and a counterweight side anti-sway device;

[0008] The auxiliary traction system comprises an auxiliary traction wheel, an auxiliary guide wheel and an anti-sway device traction rope;

[0009] The anti-sway device traction rope is suspended on the auxiliary traction wheel and the auxiliary guide wheel, one end of which is connected to the anti-sway device on the car side, and the other end is connected to the anti-sway device on the counterweight side;

[0010] The auxiliary traction wheel is driven by the elevator traction machine to drive the car side anti-sway device and the counterweight side anti-sway device to rise and fall in the elevator shaft through the anti-sway device traction rope;

[0011] The car side anti-sway device is arranged on the car side, guided by the car side guide rail, and has the same running direction as the car; the car side anti-sway device is always located at the 1 / 2 position between the car and the top floor, and is used to limit the sway range of the traction wire rope on the car;

[0012] The counterweight side anti-sway device is arranged on the counterweight side, guided by the counterweight side guide rail, and has the same running direction as the counterweight; the counterweight side anti-sway device is always located at the 1 / 2 position between the counterweight and the top layer, and is used to limit the sway range of the upper traction wire rope of the counterweight.

[0013] Preferably, the operating speed of the car-side anti-sway device is 1 / 2 of the car's operating speed, and the operating speed of the counterweight-side anti-sway device is 1 / 2 of the counterweight's operating speed.

[0014] Preferably, the auxiliary traction sheave rotates coaxially with the traction sheave of the elevator traction machine.

[0015] Preferably, the auxiliary traction system further comprises an additional guide wheel; the additional guide wheel is disposed on the auxiliary traction wheel or the lower part of the auxiliary guide wheel to guide the traction rope of the anti-sway device.

[0016] Preferably, the car side anti-sway device includes a main frame, guide shoes, guide bearings and a rope end fixing device; a hole is provided in the middle of the main frame for the traction wire rope to pass through; the guide bearings are fixed around the hole, and when the traction wire rope is stationary, there is a preset distance between the guide bearings and the traction wire rope; the traction rope of the anti-sway device is connected to the main frame through the rope end fixing device.

[0017] Preferably, the car side anti-sway device also includes a counterweight block; by adjusting the counterweight block, the center of gravity of the car side anti-sway device coincides with the suspension point of the anti-sway device traction rope.

[0018] Preferably, the counterweight side anti-sway device includes a main frame, guide shoes, guide bearings and a rope head fixing device; a hole is provided in the middle of the main frame for the traction wire rope to pass through; the guide bearings are fixed around the hole, and when the traction wire rope is stationary, there is a preset distance between the guide bearings and the traction wire rope; the traction rope of the anti-sway device is connected to the main frame through the rope head fixing device.

[0019] Preferably, the counterweight side anti-sway device further comprises a counterweight block; by adjusting the counterweight block, the center of gravity of the counterweight side anti-sway device coincides with the suspension point of the anti-sway device traction rope.

[0020] Compared with the prior art, the present invention does not need to monitor the status of the traction wire rope or the car. By linking with the original traction system of the elevator, there is no need to add an additional drive system, and the structure is simple and the cost is low. The car side anti-sway device is always located at the 1 / 2 position between the car and the top floor, and the counterweight side anti-sway device is always located at the 1 / 2 position between the counterweight and the top floor, and there is no risk of collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0022] Figure 1 This is a schematic structural diagram of an elevator traction wire rope anti-sway device according to Embodiment 1;

[0023] Figure 2 This is a schematic diagram of the structure of the car side anti-sway device of Example 1. DETAILED DESCRIPTION

[0024] 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.

[0025] Example 1

[0026] like Figure 1As shown, a traction elevator usually drives a car 1 by a traction system, and the traction system includes a traction machine, a guide wheel 6, and a traction wire rope 11. The traction wire rope 11 is suspended on a traction wheel 10 of the traction machine, one end of which is connected to the car 1, and the other end is connected to the counterweight 3. The car 1 is guided by a car side guide rail (not shown in the figure), and the counterweight 3 is guided by a counterweight side guide rail (not shown in the figure).

[0027] The traction elevator in this embodiment also includes an elevator traction wire rope anti-sway device, and the elevator traction wire rope anti-sway device includes an auxiliary traction system, a car side anti-sway device 2 and a counterweight side anti-sway device 4.

[0028] The auxiliary traction system includes an auxiliary traction wheel 9, an auxiliary guide wheel 7 and an anti-sway device traction rope 8; the anti-sway device traction rope 8 is suspended on the auxiliary traction wheel 9 and the auxiliary guide wheel 7, one end of which is connected to the car side anti-sway device 2, and the other end is connected to the counterweight side anti-sway device 4; the anti-sway device traction rope 8 can be one or more. Preferably, the auxiliary traction system also includes an additional guide wheel 5; the additional guide wheel 5 is placed at the auxiliary traction wheel 7 or the lower part of the auxiliary guide wheel 7 to guide the anti-sway device traction rope 8.

[0029] The auxiliary traction sheave 9, driven by the elevator traction machine, drives the car side anti-sway device 2 and the counterweight side anti-sway device 4 to rise and fall in the elevator shaft through the anti-sway device traction rope 8;

[0030] The car side anti-sway device 2 is arranged on the car side, guided by the car side guide rail, and has the same running direction as the car 1; the car side anti-sway device 2 is always located at the 1 / 2 position between the car and the top floor, and is used to limit the sway range of the traction wire rope 11 on the upper part of the car;

[0031] The counterweight side anti-sway device 4 is arranged on the counterweight side, guided by the counterweight side guide rail, and has the same running direction as the counterweight 3; the counterweight side anti-sway device 4 is always located at the 1 / 2 position between the counterweight and the top layer, restricting the sway range of the traction wire rope 11 on the top of the counterweight;

[0032] The auxiliary traction sheave 9 rotates coaxially with the traction sheave 10 of the elevator traction machine. For example, the auxiliary traction sheave 9 is fixed on the traction sheave 10 .

[0033] The diameter of the auxiliary traction sheave 9 and the diameter of the traction sheave 10 have a preset ratio. If the traction ratio of the elevator traction system is 1:1, the diameter ratio is 1:2. At this time, the linear speed of the auxiliary traction sheave 9 is 1 / 2 of the linear speed of the traction sheave 10, that is, the running speed of the anti-sway device 2 on the car side is 1 / 2 of the running speed of the car 1, and the running speed of the anti-sway device 4 on the counterweight side is 1 / 2 of the running speed of the counterweight 3; if the traction ratio of the traction system is 2:1, the diameter ratio is 1:4. At this time, the linear speed of the auxiliary traction sheave 9 is 1 / 4 of the linear speed of the traction sheave 10, that is, the running speed of the anti-sway device 2 on the car side is 1 / 2 of the running speed of the car 1, and the running speed of the anti-sway device 4 on the counterweight side is 1 / 2 of the running speed of the counterweight 3. Regardless of the traction ratio of the traction system, the diameter ratio of the auxiliary traction wheel 9 to the main traction wheel 10 can be adjusted to ensure that the running speed of the anti-sway device is always 1 / 2 of the running speed of the car or counterweight. Similarly, the diameters of the auxiliary guide wheel 7 and the main guide wheel 6 also have the same ratio. Since the diameter of the auxiliary traction wheel 9 and the main traction wheel 10 are small, the position of the anti-sway device traction rope 8 is adjusted by adding a guide wheel 5 to ensure that the anti-sway device traction rope 8 is on the center plane of the car guide rail 13, and the same applies to the counterweight side.

[0034] When the car 1 is at the bottom, the car side anti-sway device 2 is located at 1 / 2 of the lifting path of the car 1, and the counterweight 3 is at the top layer at this time, and the counterweight side anti-sway device 4 is installed between the counterweight and the top of the shaft. Since the running speed of the anti-sway device is always 1 / 2 of the car or counterweight, when the car 1 moves upward, the car side anti-sway device 2 always remains at the 1 / 2 position between the car 1 and the top layer, and the counterweight side anti-sway device 4 always remains at the 1 / 2 position between the counterweight 3 and the top layer, thereby realizing the anti-sway effect on the traction wire rope 11.

[0035] like Figure 2 As shown, the car side anti-sway device 2 includes a main frame, a guide shoe 21, a counterweight 22, a guide bearing 23, and a rope end fixing device 24. The guide shoes 21 are installed at both ends of the main frame, and the type can be a sliding guide shoe or a roller guide shoe. The traction wire rope 11 passes through the rectangular hole in the middle of the main frame, and a guide bearing 23 is installed around it. Four rubber columns 231 are installed on the guide bearing 23. The guide bearing 23 can limit the swaying amplitude of the traction wire rope 11, and the rubber column 231 can protect the traction wire rope 11 and avoid damage to the traction wire rope 11. The anti-sway device traction rope 8 is installed and fixed on the main frame through the rope end fixing device 24. Since the fixing position of the anti-sway device traction rope 8 is not in the middle of the anti-sway device 2 on the car side, it will cause uneven force on the guide shoes 21 on both sides. Therefore, the balance is adjusted by adjusting the installation position and number of the counterweight blocks 22 so that the center of gravity of the anti-sway device on the car side coincides with the suspension point of the anti-sway device traction rope.

[0036] The structure of the anti-sway device 4 on the counterweight side can be the same as that of the anti-sway device 2 on the car side, including a main frame, a guide shoe, a guide bearing and a rope end fixing device; a hole is provided in the middle of the main frame for the traction wire rope to pass through; the guide bearing is fixed around the hole, and when the traction wire rope is stationary, there is a preset spacing between the guide bearing and the traction wire rope; the traction rope of the anti-sway device is connected to the main frame through the rope end fixing device. The anti-sway device on the counterweight side also includes a counterweight block; by adjusting the counterweight block, the center of gravity of the anti-sway device on the counterweight side coincides with the suspension point of the traction rope of the anti-sway device.

[0037] 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. An elevator traction wire rope anti-sway device, characterized in that: It includes auxiliary traction system, car side anti-sway device and counterweight side anti-sway device; The auxiliary traction system comprises an auxiliary traction wheel, an auxiliary guide wheel and an anti-sway device traction rope; The anti-sway device traction rope is suspended on the auxiliary traction wheel and the auxiliary guide wheel, one end of which is connected to the anti-sway device on the car side, and the other end is connected to the anti-sway device on the counterweight side; The auxiliary traction wheel is driven by the elevator traction machine to drive the car side anti-sway device and the counterweight side anti-sway device to rise and fall in the elevator shaft through the anti-sway device traction rope; The car side anti-sway device is arranged on the car side, guided by the car side guide rail, and has the same running direction as the car; the car side anti-sway device is always located at the 1 / 2 position between the car and the top floor, and is used to limit the sway range of the traction wire rope on the car; The counterweight side anti-sway device is arranged on the counterweight side, guided by the counterweight side guide rail, and has the same running direction as the counterweight; the counterweight side anti-sway device is always located at the 1 / 2 position between the counterweight and the top layer, and is used to limit the sway range of the upper traction wire rope of the counterweight.

2. The elevator traction wire rope anti-sway device according to claim 1, characterized in that: The operating speed of the car side anti-sway device is 1 / 2 of the car operating speed, and the operating speed of the counterweight side anti-sway device is 1 / 2 of the counterweight operating speed.

3. The elevator traction wire rope anti-sway device according to claim 1, characterized in that: The auxiliary traction sheave rotates coaxially with the traction sheave of the elevator traction machine.

4. The elevator traction wire rope anti-sway device according to claim 1, characterized in that: The auxiliary traction system also includes an additional guide wheel; the additional guide wheel is placed on the auxiliary traction wheel or the lower part of the auxiliary guide wheel to guide the traction rope of the anti-sway device.

5. The elevator traction wire rope anti-sway device according to claim 1, characterized in that: The car side anti-sway device includes a main frame, guide shoes, guide bearings and a rope end fixing device; a hole is provided in the middle of the main frame for the traction wire rope to pass through; the guide bearings are fixed around the hole, and when the traction wire rope is stationary, there is a preset distance between the guide bearings and the traction wire rope; the traction rope of the anti-sway device is connected to the main frame through the rope end fixing device.

6. The elevator traction wire rope anti-sway device according to claim 5, characterized in that: The car side anti-sway device also includes a counterweight block; by adjusting the counterweight block, the center of gravity of the car side anti-sway device coincides with the suspension point of the anti-sway device traction rope.

7. The elevator traction wire rope anti-sway device according to claim 1, characterized in that: The counterweight side anti-sway device includes a main frame, guide shoes, guide bearings and a rope end fixing device; a hole is provided in the middle of the main frame for the traction wire rope to pass through; the guide bearings are fixed around the hole, and when the traction wire rope is stationary, there is a preset distance between the guide bearings and the traction wire rope; the traction rope of the anti-sway device is connected to the main frame through the rope end fixing device.

8. The elevator traction wire rope anti-sway device according to claim 7, characterized in that: The counterweight side anti-sway device also includes a counterweight block; by adjusting the counterweight block, the center of gravity of the counterweight side anti-sway device coincides with the suspension point of the anti-sway device traction rope.

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