WO2022027882A1

WO2022027882A1 - Control method for car damping device

Info

Publication number: WO2022027882A1
Application number: PCT/CN2020/133349
Authority: WO
Inventors: 周双林; 杨银国; 谌涛
Original assignee: 迅达（中国）电梯有限公司
Priority date: 2020-08-03
Filing date: 2020-12-02
Publication date: 2022-02-10
Also published as: CN114057071A

Abstract

A control method for a car damping device, comprising: calculating an elongation amount dL of a car side traction rope (30) under a predetermined pulling force F when a car (10) is located at a certain floor; determining whether the calculated elongation amount dL is greater than a predetermined elongation amount ΔL; if a determination result is no, controlling a car damping device (12) not to act when the car (10) stops at the certain floor; and if the determination result is yes, controlling the car damping device (12) to act when the car (10) stops at the certain floor. The control method can effectively prolong the service life of the car damping device (12) by reducing the acting frequency of the car damping device (12) while not increasing the discomfort of passengers when getting in or out of a car.

Description

Control method of car damping device

technical field

The invention relates to a control method of a car damping device.

Background technique

Due to its own elasticity, the elevator traction suspension device will elastically stretch when passengers enter and exit the car, causing the elevator car to sink. Especially when the lifting height is large, the elastic elongation is relatively large, resulting in a large amount of sinking of the elevator car. In this way, when the elevator is located on the lower floor, passengers enter and exit the car, and the car will shake up and down very obviously. This up-and-down movement created some concerns for passengers that there was something wrong with the elevator. In order to suppress this vibration, a car damping device (Car Damping Device), or CDD for short, is generally configured on the car. The device exerts a clamping force on the car guide rail or a fixed part in the hoistway at the position of the car leveling, and the car damping device can quickly attenuate the vibration of the car, thereby improving the comfort of passengers. Existing car damping devices operate when passengers enter and exit the car on each floor. Because the friction force generated by the clamping force of the car damping device is generally small, it is not enough to overcome the weight of passengers entering and exiting the car. Therefore, when the car damping device acts, passengers entering and leaving the car will still cause the up and down movement of the car, and the car damping The surface of the device in contact with the guide rail is subject to repeated friction and the life is reduced.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and deficiencies in the prior art.

According to an aspect of the present invention, there is provided a control method of a car damping device, comprising the following steps:

S100: Calculate the elongation dL of the car-side hoisting rope under the predetermined tension F when the car is at a certain floor;

S200: Determine whether the calculated elongation amount dL is greater than the predetermined elongation amount ΔL, if the determination result is no, execute the following step S310, and if the determination result is yes, execute the following step S320;

S310: Control the car damping device not to act when the car stops at the certain floor; and

S320: Control the car damping device to act when the car stops at the certain floor.

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

dL=(LF)/(knES) where,

E is the elastic modulus of the traction rope;

S is the area of the metal cross-section of the hoisting rope;

L is the original length of the hoisting rope on the side of the car when the car is at a certain floor;

n is the number of ropes;

k is the traction ratio.

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

According to another exemplary embodiment of the present invention, when the predetermined tensile force F is 75Kg, the predetermined elongation ΔL can be set to any value from 1 to 5 mm.

According to another exemplary embodiment of the present invention, when the predetermined tensile force F is 75Kg, the predetermined elongation ΔL is set to 5mm, that is, if the load of the car increases by 75Kg, the sinking If the amount is not more than 5mm, the damping device of the car is controlled to not act when the car stops at the certain floor.

According to another exemplary embodiment of the present invention, when the predetermined tensile force F is 75Kg, the predetermined elongation ΔL is set to 3mm, that is, if the load of the car increases by 75Kg, the car sinks If the amount is not more than 3mm, the damping device of the car is controlled to not act when the car stops at the certain floor.

According to another exemplary embodiment of the present invention, when the predetermined tensile force F is 75Kg, the predetermined elongation ΔL is set to 2.5mm, that is, if the load of the car increases by 75Kg, the lower If the weight is not more than 2.5mm, the damping device of the car is controlled not to act when the car stops at the certain floor.

According to another exemplary embodiment of the present invention, when the predetermined tensile force F is 75Kg, the predetermined elongation ΔL is set to 1mm, that is, if the load of the car increases by 75Kg, the car sinks If the amount is not more than 1mm, the damping device of the car is controlled to not act when the car stops at the certain floor.

According to another exemplary embodiment of the present invention, in the step S310, controlling the car damping device not to act when the car stops at the certain floor refers to controlling the car damping device to operate in the car The elevator guide rail for guiding the vertical movement of the car is not clamped when stopping at the certain floor.

According to another exemplary embodiment of the present invention, in the step S320, controlling the car damping device to act when the car stops at the certain floor refers to controlling the car damping device to stop at the car On a certain floor, the elevator guide rail for guiding the vertical movement of the car is clamped, so as to reduce the up and down shaking of the car when passengers enter and exit.

In each of the foregoing exemplary embodiments of the present invention, by reducing the frequency of the action of the car damping device, the service life of the car damping device can be effectively improved without increasing the discomfort of passengers when entering or leaving the car.

Other objects and advantages of the present invention will be apparent from the following description of the present invention with reference to the accompanying drawings, and may assist in a comprehensive understanding of the present invention.

Description of drawings

FIG. 1 shows a schematic diagram of an elevator system according to an exemplary embodiment of the present invention;

Figure 2 shows a schematic view of the car system when viewed from the front according to an exemplary embodiment of the present invention;

Figure 3 shows a schematic view from the side of a car system according to an exemplary embodiment of the present invention.

detailed description

The technical solutions of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals refer to the same or similar parts. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, and should not be construed as a limitation of the present invention.

Furthermore, in the following detailed description, for convenience of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. Obviously, however, one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagram form in order to simplify the drawings.

According to a general technical concept of the present invention, a control method of a car damping device is provided, which includes: calculating the elongation dL of the car-side traction rope under a predetermined tension F when the car is at a certain floor; Whether the calculated elongation dL is greater than the predetermined elongation ΔL; if the judgment result is no, control the car damping device not to act when the car stops at the certain floor; if the judgment result is yes, control the car The damping device acts when the car stops at the certain floor.

Figure 1 shows a schematic diagram of an elevator system according to an exemplary embodiment of the present invention.

As shown in FIG. 1 , in the illustrated embodiment, the elevator system mainly includes a car 10 , an arrangement 20 , a hoisting rope 30 and a hoisting machine 40 . The hoisting machine 40 pulls the car 10 and the arrangement 20 via the hoist rope 30 .

Figure 2 shows a schematic view from the front of a car system according to an exemplary embodiment of the present invention; Figure 3 shows a schematic view from the side of the car system according to an exemplary embodiment of the present invention.

As shown in FIGS. 1 to 3 , in the illustrated embodiment, the elevator system further includes guide rails 1 and car guide shoes 11 fixed to the car 10 . The car guide shoe 11 rolls or slides along the guide rail 1 so as to guide the car 10 to move smoothly in the vertical direction.

As shown in FIGS. 1-3 , in the illustrated embodiment, the elevator system further includes a car damping device 12 fixed to the car 10 . Next, a method of controlling the car damping device 12 will be described.

In an exemplary embodiment of the present invention, a control method of a car damping device is disclosed, comprising the following steps:

S100: Calculate the car-side hoisting rope when the car is located at a certain floor (for example, the i-th floor, i=1, 2, ..., n, n is a positive integer greater than 1, which is equal to the total floor of the building) 30 The elongation dL under the predetermined tensile force F;

S310: Controlling the car damping device 12 not to act when the car 10 stops at a certain floor; and

S320: Control the car damping device 12 to act when the car 10 stops at a certain floor.

As shown in Fig. 1 to Fig. 3 , in an exemplary embodiment of the present invention, in step S100, when the car 10 is located at a certain floor, the car-side hoisting rope 30 is calculated according to the following formula at a predetermined Elongation dL under tension F:

dL=(LF)/(knES) where,

E is the elastic modulus of the traction rope 30;

S is the area of the metal cross-section of the hoisting rope 30 (excluding the area of the non-metallic coating of the hoisting rope 30);

L is the original length of the car-side hoisting rope 30 when the car 10 is located at a certain floor;

n is the number of ropes;

k is the traction ratio.

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

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

As shown in FIGS. 1 to 3 , in an exemplary embodiment of the present invention, when the predetermined tensile force F is 75Kg, the predetermined elongation ΔL is set to 5mm, that is, if the load of the car 10 increases by 75Kg When the sinking amount is not more than 5mm, the damping device 12 of the car is controlled to not act when the car 10 stops at a certain floor.

As shown in FIGS. 1 to 3 , in another exemplary embodiment of the present invention, when the predetermined tensile force F is 75Kg, the predetermined elongation ΔL is set to 3mm, that is, if the load of the car 10 increases When the subsidence amount at 75Kg is not more than 3mm, the damping device 12 of the car is controlled to not act when the car 10 stops at a certain floor.

As shown in FIGS. 1 to 3 , in another exemplary embodiment of the present invention, when the predetermined tensile force F is 75Kg, the predetermined elongation ΔL is set to 2.5mm, that is, if the load of the car 10 is When the subsidence amount increases by 75Kg is not more than 2.5mm, the damping device 12 of the car is controlled to not act when the car 10 stops at a certain floor.

As shown in FIGS. 1 to 3 , in another exemplary embodiment of the present invention, when the predetermined tensile force F is 75Kg, the predetermined elongation ΔL is set to 1 mm, that is, if the load of the car 10 increases When the subsidence amount at 75Kg is not more than 1mm, the damping device 12 of the car is controlled to not act when the car 10 stops at a certain floor.

Please note that the setting of the predetermined elongation amount ΔL can be appropriately set according to the actual situation, because the size of the predetermined elongation amount ΔL is directly related to the number of actions of the car damping device 12 . If the predetermined elongation ΔL is larger, the number of actions of the car damping device 12 is less; if the predetermined elongation ΔL is smaller, the number of actions of the car damping device 12 is more.

As shown in FIGS. 1 to 3 , in an exemplary embodiment of the present invention, in step S310 , controlling the car damping device 12 to not act when the car 10 stops at a certain floor means controlling the car damping device 12 The elevator guide rail 1 for guiding the vertical movement of the car 10 is not clamped when the car 10 stops at a certain floor.

As shown in FIGS. 1 to 3 , in an exemplary embodiment of the present invention, in step S320 , controlling the car damping device 12 to act when the car 10 stops at a certain floor refers to controlling the car damping device 12 When the car 10 stops at a certain floor, the elevator guide rail 1 for guiding the vertical movement of the car 10 is clamped, so as to reduce the up and down shaking of the car 10 when passengers enter and exit.

According to the calculation formula of the elongation dL of the car-side hoisting rope 30 above, it can be clearly known that when the car 10 is at a higher floor position, the length L of the car-side hoisting rope 30 is shorter, so at this time The elongation amount dL of the car-side hoisting rope 30 under the action of the predetermined tensile force F is also small, which does not cause discomfort to passengers. Therefore, when the car 30 is at a higher floor position, the present invention will control the car damping device 12 not to act, which can reduce the number of actions of the car damping device 12, thereby greatly extending the use of the car damping device 12 life.

Those skilled in the art can understand that the above-described embodiments are all exemplary, and those skilled in the art can make improvements thereto, and the structures described in the various embodiments do not conflict in terms of structures or principles can be freely combined.

Although the present invention has been described with reference to the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to illustrate the preferred embodiments of the present invention and should not be construed as a limitation of the present invention.

Although some embodiments of the present general inventive concept have been shown and described, those of ordinary skill in the art will understand that The scope is defined by the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Furthermore, any element numbers in the claims should not be construed as limiting the scope of the invention.

Claims

A control method of a car damping device, comprising the following steps:

S100: Calculate the elongation dL of the car-side traction rope (30) under the predetermined tension F when the car (10) is located on a certain floor;

S200: Determine whether the calculated elongation amount dL is greater than the predetermined elongation amount ΔL, if the determination result is no, execute the following step S310, and if the determination result is yes, execute the following step S320;

S310: Control the car damping device (12) not to act when the car (10) stops at the certain floor; and

S320: Control the car damping device (12) to act when the car (10) stops at the certain floor.
The control method of the car damping device according to claim 1, wherein:

In the step S100, the elongation dL of the car-side hoisting rope (30) under the predetermined tension F when the car (10) is located at a certain floor is calculated according to the following formula:

dL=(LF)/(knES) where,

E is the elastic modulus of the traction rope (30);

S is the area of the metal cross section of the traction rope (30);

L is the original length of the car-side hoisting rope (30) when the car (10) is located on a certain floor;

n is the number of ropes;

k is the traction ratio.
The control method of the car damping device according to claim 2, wherein:

The elastic modulus E of the traction rope (30) and the area S of the metal cross-section of the traction rope (30) are known parameters;

The original length L of the car-side hoisting rope (30) is estimated as the distance between the car (10) and the traction sheave of the elevator.
The control method of the car damping device according to claim 1, wherein:

When the predetermined tensile force F is 75Kg, the predetermined elongation ΔL can be set to any value from 1 to 5 mm.
The control method of the car damping device according to claim 4, wherein:

When the predetermined pulling force F is 75Kg, the predetermined elongation ΔL is set to 5mm, that is, if the sinking amount of the car (10) is not more than 5mm when the load of the car (10) increases by 75Kg, the car is controlled The damping device (12) does not act when the car (10) stops at the certain floor.
The control method of the car damping device according to claim 4, wherein:

When the predetermined tensile force F is 75Kg, the predetermined elongation ΔL is set to 3mm, that is, if the sinking amount of the car (10) is not more than 3mm when the load of the car (10) increases by 75Kg, the car is controlled The damping device (12) does not act when the car (10) stops at the certain floor.
The control method of the car damping device according to claim 4, wherein:

When the predetermined tensile force 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 more than 2.5mm, the control The car damping device (12) does not act when the car (10) stops at the certain floor.
The control method of the car damping device according to claim 4, wherein:

When the predetermined pulling force F is 75Kg, the predetermined elongation ΔL is set to 1mm, that is, if the sinking amount of the car (10) is not more than 1mm when the load of the car (10) increases by 75Kg, the car is controlled The damping device (12) does not act when the car (10) stops at the certain floor.
The control method of the car damping device according to claim 1, wherein:

In the step S310, controlling the car damping device (12) to not act when the car (10) stops at the certain floor refers to controlling the car damping device (12) to operate in the car (10) The elevator guide rail (1) for guiding the vertical movement of the car (10) is not clamped when stopping at the certain floor.
The control method of the car damping device according to claim 1, wherein:

In the step S320, controlling the car damping device (12) to act when the car (10) stops at the certain floor refers to controlling the car damping device (12) to stop at the car (10). The elevator guide rail (1) for guiding the vertical movement of the car (10) is clamped at a certain floor, so as to reduce the up and down shaking of the car (10) when passengers enter and exit.