Control method of a car damping device

Abstract

Disclosed is a control method for a car damper device, including: calculating an elongation dL of a car-side traction rope under a predetermined tension F when a car is located at a certain floor; determining whether the calculated elongation dL is greater than a predetermined elongation ΔL; if the determination result is no, controlling the car damper device to be inactive when the car stops at the certain floor; and if the determination result is yes, controlling the car damper device to be active when the car stops at the certain floor. In the present application, the service life of the car damper device can be effectively improved by reducing the frequency of the action of the car damper device, and at the same time, the discomfort of passengers when getting in and out of the car is not increased.

Description

Technical Field

[0001] This invention relates to a control method for a car damping device. Background Technology

[0002] Due to its inherent elasticity, the elevator traction suspension system stretches when passengers enter and exit the car, causing the car to sag. This stretching is particularly pronounced during large lifts, resulting in significant sag. Consequently, when the elevator is on a lower floor, the car experiences noticeable vertical swaying as passengers enter and exit. This swaying can cause passengers to worry and suspect a problem with the elevator. To mitigate this vibration, a car damping device (CDD) is typically installed in the car. This device applies a clamping force to a fixed component on the car guide rails or in the shaft at the floor level. The CDD rapidly dampens the car's vibration, improving passenger comfort. Current CDD devices activate every time passengers enter or exit the car on each floor. Since the frictional force generated by the clamping force of the car damping device is generally small and insufficient to overcome the weight of passengers entering and exiting the car, the car will still move up and down when passengers enter and exit the car when the car damping device is activated. The surface of the car damping device in contact with the guide rail is in repeated friction, which will reduce its lifespan. Summary of the Invention

[0003] The purpose of this invention is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0004] According to one aspect of the present invention, a control method for a car damping device is provided, comprising the following steps:

[0005] S100: Calculate the elongation dL of the car-side traction rope under a predetermined tension F when the car is on a certain floor;

[0006] S200: Determine whether the calculated elongation dL is greater than the predetermined elongation ΔL. If the determination result is no, proceed to step S310 below. If the determination result is yes, proceed to step S320 below.

[0007] S310: The car damping device is controlled to remain inactive when the car stops at the aforementioned floor; and

[0008] S320: Controls the car damping device to activate when the car stops at a certain floor.

[0009] According to an exemplary embodiment of the present invention, in step S100, the elongation dL of the car-side traction rope under a predetermined tension F when the car is located at a certain floor is calculated according to the following formula:

[0010] dL=(LF) / (knES) where,

[0011] E is the elastic modulus of the traction rope;

[0012] S is the area of ​​the metal cross-section of the traction rope;

[0013] L is the original length of the car-side traction rope when the car is on a certain floor;

[0014] n is the number of traction ropes;

[0015] k is the traction ratio.

[0016] According to another exemplary embodiment of the invention, the elastic modulus E of the traction rope and the area S of the metal cross-section of the traction rope are known parameters; the original length L of the traction rope on the car side is estimated as the distance between the car and the traction sheave of the elevator.

[0017] According to another exemplary embodiment of the present invention, when the predetermined tensile force F is 75 kg, the predetermined elongation ΔL can be set to any value between 1 and 5 mm.

[0018] According to another exemplary embodiment of the present invention, when the predetermined tension F is 75 kg, the predetermined elongation ΔL is set to 5 mm, that is, if the sinking amount when the load of the car increases by 75 kg is not greater than 5 mm, the car damping device is controlled not to operate when the car stops at a certain floor.

[0019] According to another exemplary embodiment of the present invention, when the predetermined tension F is 75 kg, the predetermined elongation ΔL is set to 3 mm, that is, if the sinking amount when the load of the car increases by 75 kg is not greater than 3 mm, the car damping device is controlled not to operate when the car stops at a certain floor.

[0020] According to another exemplary embodiment of the present invention, when the predetermined tension F is 75 kg, the predetermined elongation ΔL is set to 2.5 mm, that is, if the sinking amount when the load of the car increases by 75 kg is not greater than 2.5 mm, the car damping device is controlled not to operate when the car stops at a certain floor.

[0021] According to another exemplary embodiment of the present invention, when the predetermined tension F is 75 kg, the predetermined elongation ΔL is set to 1 mm, that is, if the sinking amount when the load of the car increases by 75 kg is not greater than 1 mm, the car damping device is controlled not to operate when the car stops at a certain floor.

[0022] According to another exemplary embodiment of the present invention, in step S310, controlling the car damping device not to operate when the car stops at a certain floor means controlling the car damping device not to clamp the elevator guide rail used to guide the vertical movement of the car when the car stops at a certain floor.

[0023] According to another exemplary embodiment of the present invention, in step S320, controlling the action of the car damping device when the car stops at a certain floor means controlling the car damping device to clamp the elevator guide rail used to guide the vertical movement of the car when the car stops at the certain floor, so as to reduce the up-and-down swaying of the car when passengers enter and exit.

[0024] In the aforementioned exemplary embodiments of the present invention, the lifespan of the car damping device can be effectively improved by reducing the frequency of its operation, without increasing passenger discomfort when entering or exiting the car.

[0025] Other objects and advantages of the invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0026] Figure 1 A schematic diagram of an elevator system according to an exemplary embodiment of the present invention is shown;

[0027] Figure 2 A schematic diagram showing a car system according to an exemplary embodiment of the present invention, viewed from the front;

[0028] Figure 3 A schematic diagram showing a car system according to an exemplary embodiment of the present invention, viewed from the side. Detailed Implementation

[0029] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation thereof.

[0030] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0031] According to an overall technical concept of the present invention, a control method for a car damping device is provided, comprising: calculating the elongation dL of the car-side traction rope under a predetermined tension F when the car is located at a certain floor; determining whether the calculated elongation dL is greater than a predetermined elongation ΔL; if the determination result is no, controlling the car damping device not to operate when the car stops at the certain floor; if the determination result is yes, controlling the car damping device to operate when the car stops at the certain floor.

[0032] Figure 1 A schematic diagram of an elevator system according to an exemplary embodiment of the present invention is shown.

[0033] like Figure 1 As shown in the illustrated embodiment, the elevator system mainly includes a car 10, a configuration 20, traction ropes 30, and a traction machine 40. The traction machine 40 pulls the car 10 and the configuration 20 via the traction ropes 30.

[0034] Figure 2 A schematic diagram showing a car system according to an exemplary embodiment of the present invention, viewed from the front; Figure 3 A schematic diagram showing a car system according to an exemplary embodiment of the present invention, viewed from the side.

[0035] like Figures 1 to 3 As shown in the illustrated embodiment, the elevator system also includes a guide rail 1 and a car guide shoe 11 fixed to the car 10. The car guide shoe 11 rolls or slides along the guide rail 1, thereby guiding the car 10 to move smoothly in the vertical direction.

[0036] like Figures 1 to 3 As shown in the illustrated embodiment, the elevator system also includes a car damping device 12 fixed to the car 10. The control method of the car damping device 12 will be described below.

[0037] In one exemplary embodiment of the present invention, a control method for a car damping device is disclosed, comprising the following steps:

[0038] S100: Calculate the elongation dL of the car-side traction rope 30 under a predetermined tension F when the car is located on a certain floor (e.g., the i-th floor, i = 1, 2, ..., n, where n is a positive integer greater than 1, which is equal to the total number of floors in the building);

[0039] S200: Determine whether the calculated elongation dL is greater than the predetermined elongation ΔL. If the determination result is no, proceed to step S310 below. If the determination result is yes, proceed to step S320 below.

[0040] S310: Controls the car damping device 12 to remain inactive when the car 10 stops at a certain floor; and

[0041] S320: Controls the car damping device 12 to activate when the car 10 stops at a certain floor.

[0042] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, in step S100, the elongation dL of the car-side traction rope 30 under a predetermined tension F when the car 10 is located at a certain floor is calculated according to the following formula:

[0043] dL=(LF) / (knES) where,

[0044] E is the elastic modulus of the traction rope 30;

[0045] S is the area of ​​the metal cross-section of the traction rope 30 (excluding the area of ​​the non-metallic coating of the traction rope 30);

[0046] L is the original length of the car-side traction rope 30 when the car 10 is located on a certain floor;

[0047] n is the number of traction ropes;

[0048] k is the traction ratio.

[0049] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, the elastic modulus E of the traction rope 30, the area S of the metal cross-section of the traction rope 30, the number of traction ropes n, and the traction ratio k are all known parameters that can be obtained from the elevator's product manual. The original length L of the car-side traction rope 30 can be estimated as the distance between the car 10 and the elevator's traction sheave.

[0050] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, when the predetermined tensile force F is set to 75 kg, the predetermined elongation ΔL can be set to any value between 1 and 5 mm.

[0051] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, when the predetermined tension F is 75Kg, the predetermined elongation ΔL is set to 5mm. That is, if the sinking amount when the load of the car 10 increases by 75Kg is not greater than 5mm, the car damping device 12 is controlled not to operate when the car 10 stops at a certain floor.

[0052] like Figures 1 to 3 As shown, in another exemplary embodiment of the present invention, when the predetermined tension F is 75Kg, the predetermined elongation ΔL is set to 3mm. That is, if the sinking amount when the load of the car 10 increases by 75Kg is not greater than 3mm, the car damping device 12 is controlled not to operate when the car 10 stops at a certain floor.

[0053] like Figures 1 to 3As shown, in another exemplary embodiment of the present invention, when the predetermined tension F is 75Kg, the predetermined elongation ΔL is set to 2.5mm. That is, if the sinking amount when the load of the car 10 increases by 75Kg is not greater than 2.5mm, the car damping device 12 will not operate when the car 10 stops at a certain floor.

[0054] like Figures 1 to 3 As shown, in another exemplary embodiment of the present invention, when the predetermined tension F is 75Kg, the predetermined elongation ΔL is set to 1mm, that is, if the sinking amount when the load of the car 10 increases by 75Kg is not greater than 1mm, the car damping device 12 is controlled not to operate when the car 10 stops at a certain floor.

[0055] Please note that the predetermined elongation amount ΔL can be set appropriately according to the actual situation, because the magnitude of the predetermined elongation amount ΔL is directly related to the number of times the car damping device 12 operates. If the predetermined elongation amount ΔL is larger, the number of times the car damping device 12 operates will be less; if the predetermined elongation amount ΔL is smaller, the number of times the car damping device 12 operates will be more.

[0056] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, in step S310, controlling the car damping device 12 not to operate when the car 10 stops at a certain floor means controlling the car damping device 12 not to clamp the elevator guide rail 1 used to guide the vertical movement of the car 10 when the car 10 stops at a certain floor.

[0057] like Figures 1 to 3 As shown, in an exemplary embodiment of the present invention, in step S320, controlling the action of the car damping device 12 when the car 10 stops at a certain floor means controlling the car damping device 12 to clamp the elevator guide rail 1 used to guide the vertical movement of the car 10 when the car 10 stops at a certain floor, so as to reduce the up-and-down swaying of the car 10 when passengers enter and exit.

[0058] Based on the calculation formula for the elongation dL of the car-side traction rope 30, it is clear that when the car 10 is at a higher floor, the length L of the car-side traction rope 30 is shorter. Therefore, the elongation dL of the car-side traction rope 30 under the predetermined tension F is also smaller, which will not cause passenger discomfort. Therefore, when the car 30 is at a higher floor, this invention controls the car damping device 12 to remain inactive, thus reducing the frequency of activation of the car damping device 12 and significantly extending its service life.

[0059] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing any conflict in structure or principle.

[0060] Although the invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the invention and should not be construed as limiting the invention.

[0061] While some embodiments of the present general inventive concept have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined by the claims and their equivalents.

[0062] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of the invention.

Claims

1. A control method for a car damping device, comprising the following steps: S100: Calculate the elongation dL of the car-side traction rope (30) under a predetermined tension F when the car (10) is located on a certain floor according to the formula, wherein the predetermined tension F is a fixed value determined in advance; S200: Determine whether the calculated elongation dL is greater than the predetermined elongation ΔL. If the determination result is no, control the car damping device to execute the following step S310. If the determination result is yes, control the car damping device to execute the following step S320. S310: If the calculated elongation dL is not greater than the predetermined elongation ΔL, then the car damping device (12) is controlled not to clamp the elevator guide rail used to guide the vertical movement of the car when the car (10) stops at the floor, and there is no friction between the car damping device (12) and the elevator guide rail; and S320: If the calculated elongation dL is greater than the predetermined elongation ΔL, then the car damping device (12) is controlled to clamp the elevator guide rail used to guide the vertical movement of the car when the car (10) stops at a certain floor. The friction between the car damping device (12) and the elevator guide rail... The magnitude of the predetermined elongation ΔL is negatively correlated with the number of times the car damping device (12) operates.

2. The control method for the car damping device according to claim 1, characterized in that: In step S100, the elongation dL of the car-side traction rope (30) under a predetermined tension F when the car (10) is located on a certain floor is calculated according to the following formula: dL=(LF) / (knES) where, E is the elastic modulus of the car-side traction rope (30); S is the area of ​​the metal cross-section of the car-side traction rope (30); L is the original length of the car-side traction rope (30) when the car (10) is located on a certain floor; n is the number of traction ropes (30) on the side of the car; k is the traction ratio.

3. The control method for the car damping device according to claim 2, characterized in that: The elastic modulus E of the car-side traction rope (30) and the area S of the metal cross-section of the car-side traction rope (30) are known parameters; The original length L of the car-side traction rope (30) is estimated to be the distance between the car (10) and the elevator's traction sheave.

4. The control method for the car damping device according to claim 1, characterized in that: When the predetermined tensile force F is 75 kg, the predetermined elongation ΔL is set to any value between 1 and 5 mm.

5. The control method for the car damping device according to claim 4, characterized in that: When the predetermined tension F is 75Kg, the predetermined elongation ΔL is set to 5mm. That is, if the sinking amount when the load of the car (10) increases by 75Kg is not greater than 5mm, the car damping device (12) is controlled not to clamp the elevator guide rail used to guide the vertical movement of the car when the car (10) stops at a certain floor.

6. The control method for the car damping device according to claim 4, characterized in that: When the predetermined tension F is 75Kg, the predetermined elongation ΔL is set to 3mm. That is, if the sinking amount of the car (10) when the load increases by 75Kg is not greater than 3mm, the car damping device (12) will not clamp the elevator guide rail used to guide the car to move vertically when the car (10) stops at a certain floor.

7. The control method for the car damping device according to claim 4, characterized in that: When the predetermined tension F is 75Kg, the predetermined elongation ΔL is set to 2.5mm. That is, if the sinking amount when the load of the car (10) increases by 75Kg is not greater than 2.5mm, the car damping device (12) will not clamp the elevator guide rail used to guide the vertical movement of the car when the car (10) stops at a certain floor.

8. The control method for the car damping device according to claim 4, characterized in that: When the predetermined tension F is 75Kg, the predetermined elongation ΔL is set to 1mm. That is, if the sinking amount of the car (10) when the load increases by 75Kg is not greater than 1mm, the car damping device (12) will not clamp the elevator guide rail used to guide the car to move vertically when the car (10) stops at a certain floor.

Images