Multi-traction synchronous system and control method thereof

Abstract

The invention belongs to the technical field of elevators, and discloses a multi-traction synchronous system and a control method thereof, a plurality of traction machines are installed at the top of an elevator shaft and connected to a driving component, the traction machines are configured to pull a lift car, a synchronous wheel is installed at the top of the lift car, the traction machines are divided into two rows and installed on the two sides of the synchronous wheel respectively, and the traction machines are connected to the driving component. The traction wheel of each row of traction machines is in transmission connection and connected to the synchronous wheel, the encoder is installed on the synchronous wheel, the driving component and the encoder are both connected with the control device, through the arrangement, precise synchronization of the two rows of traction machines can be achieved in the lift car lifting process of an elevator, and the running stability of the elevator is improved; the multi-traction system is operated, the encoder collects rotation data of the synchronous wheel in real time and generates an electronic signal, the control device receives the electronic signal, judges whether the two rows of traction machines are synchronous or not and further controls the driving component to adjust the rotation speed of the abnormal row of traction machines, so that synchronous operation of the multiple traction machines is achieved, the automation degree is high, and the operation efficiency is high. And the response is quick.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a multi-traction synchronous system and a control method thereof. Background Art

[0002] The traction machine is one of the core components in the elevator system. It is mainly used to pull the elevator car up and down through the steel cable. Its working principle is based on the motor driving the wheel axle to rotate. The traction wheel on the wheel axle cooperates with the steel cable that suspends the elevator car, and the friction between the two is used to realize the rise or fall of the elevator.

[0003] In the elevator operation system, the multi-traction system is a technical solution to improve the efficiency, stability and safety of elevator operation. The multi-traction system uses two or more traction machines to work simultaneously. Through the simultaneous action of multiple traction machines, the load is distributed more effectively, and heavier loads or faster speeds can be supported. It helps to reduce problems caused by single motor failure and increase the redundancy and reliability of the system. Due to the dispersion of force, the mechanical stress on each traction machine is reduced, which helps to extend the service life of the equipment. However, the synchronization of the coordinated work of multiple traction machines is directly related to the quality of elevator operation. Summary of the invention

[0004] The object of the present invention is to provide a multi-traction synchronous system, which can pull the car up and down, accurately judge the status of multiple traction machines and make adjustments, and improve the stability of elevator operation.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A multi-traction synchronization system, comprising:

[0007] A traction device, comprising a driving component and a plurality of traction machines, wherein the plurality of traction machines are installed at the top of the elevator shaft, the plurality of traction machines are connected to the driving component, and the traction machines are configured to pull the car;

[0008] A monitoring device, the monitoring device comprising a synchronous wheel and an encoder, the synchronous wheel is installed on the top of the car, a plurality of traction machines are divided into two rows and are respectively installed on both sides of the synchronous wheel, the traction wheels of the traction machines in each row are drivingly connected and connected to the synchronous wheel, the encoder is installed on the synchronous wheel, and the encoder is configured to collect the rotation data of the synchronous wheel in real time and generate an electronic signal;

[0009] The control device, the driving component and the encoder are connected to the control device, and the control device is configured to determine the synchronization state of the two columns of traction machines based on the electronic signal, and transmit a control signal to the driving component in real time to adjust the rotation speed of the abnormal column of traction machines.

[0010] Preferably, the control device includes a signal receiving module, a signal analyzing module and a signal transmitting module, the signal receiving module is configured to receive the electronic signal, the signal analyzing module is configured to determine whether the two columns of traction machines are synchronized, and the signal transmitting module is configured to generate the control signal and transmit it to the driving component.

[0011] Preferably, the control device further comprises a storage module, and the storage module is configured to pre-store a synchronization error range.

[0012] The object of the present invention is to provide a control method for a multi-traction synchronous system with high automation and rapid response.

[0013] To achieve this object, the present invention adopts the following technical solutions:

[0014] A control method for a multi-traction synchronous system is applied to the above-mentioned multi-traction synchronous system, comprising the following steps:

[0015] S1, running the multi-traction system, the encoder collects the rotation data of the synchronous wheel in real time and generates an electronic signal;

[0016] S2, the control device receives the electronic signal and determines whether the two traction machines are synchronized. If not, it goes to S3; if synchronized, it returns to S1;

[0017] S3. The control device controls the driving component to adjust the rotation speed of the traction machine in the abnormal row.

[0018] Preferably, the S1 comprises:

[0019] S11, operating a plurality of the traction machines, wherein the encoder collects the rotation data of the synchronous wheel in real time;

[0020] S12, the encoder generates an electronic signal from the rotation data;

[0021] S13. The encoder transmits the electronic signal to the control device.

[0022] Preferably, S2 comprises:

[0023] S21, a signal receiving module receives the electronic signal;

[0024] S22. The signal analysis module determines whether the two trains of traction machines are synchronized.

[0025] Preferably, the S22 includes:

[0026] S221, the signal analysis module analyzes the rotation data of the synchronous wheel according to the electronic signal;

[0027] S222, the signal analysis module compares the rotation data of the synchronous wheel with the synchronization error range, if the rotation data of the synchronous wheel exceeds the synchronization error range, enter S3, if the rotation data of the synchronous wheel is within the synchronization error range, return to S1.

[0028] Preferably, S3 includes:

[0029] S31, a signal transmission module generates the control signal according to the rotation data of the synchronization wheel;

[0030] S32, the driving component receives and analyzes the control signal, and drives the traction machine of the abnormal column alone to adjust the rotation speed.

[0031] Preferably, the driving component includes a signal unit and two driving units, the signal unit is configured to receive and analyze the control signal, the driving unit is connected to the signal unit, the two driving units respectively drive the traction wheels connected to the two columns of traction machines, and the driving units are configured to drive the traction machines in the corresponding column to operate.

[0032] Preferably, the S32 includes:

[0033] S321, the signal unit receives and analyzes the control signal;

[0034] S322: The driving unit corresponding to the traction machine in the abnormal row receives the control signal and drives the corresponding traction machine to adjust the rotation speed.

[0035] Beneficial effects of the present invention:

[0036] The present invention provides a multi-traction synchronous system and a control method thereof. The traction device comprises a driving component and a plurality of traction machines installed on the top of an elevator shaft. The plurality of traction machines are connected to the driving component. The traction machines are configured to traction a car. The monitoring device comprises a synchronous wheel and an encoder. The synchronous wheel is installed on the top of the car. The plurality of traction machines are divided into two rows and are respectively installed on both sides of the synchronous wheel. The traction wheels of each row of traction machines are transmission-connected and connected to the synchronous wheel. The encoder is installed on the synchronous wheel. The driving component and the encoder are connected to the control device. The car of the traction elevator can be lifted and lowered by the above arrangement. In the process, the monitoring device accurately determines the synchronization state of the two rows of traction machines. The traction machines are adjusted by the driving component to achieve accurate synchronization of the two rows of traction machines, thereby improving the stability of the elevator operation. By running the multi-traction system, the encoder collects the rotation data of the synchronous wheel in real time and generates an electronic signal. The control device receives the electronic signal and determines whether the two rows of traction machines are synchronized, and further controls the driving component to adjust the rotation speed of the abnormal row of traction machines to achieve synchronous operation of the plurality of traction machines. The automation degree is high and the response is rapid. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a structural schematic diagram of a multi-traction synchronization system provided by Embodiment 1 of the present invention;

[0038] Figure 2 is a module diagram of a control device provided in Embodiment 1 of the present invention;

[0039] Figure 3 It is a flow chart of a control method of a multi-traction synchronization system provided in the second embodiment of the present invention.

[0040] In the figure:

[0041] 10. Traction machine; 101. Traction wheel; 20. Car; 30. Traction rope; 1. Synchronous wheel; 2. Encoder. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0046] Embodiment 1

[0047] This embodiment provides a multi-traction synchronization system, which can pull the elevator car up and down, and accurately judge and adjust the synchronization status of multiple traction machines in the process, so as to achieve accurate synchronization of multiple traction machines, thereby improving the stability of elevator operation.

[0048] See also Figure 1 and Figure 2 A multi-traction synchronous system includes a traction device, a monitoring device and a control device, wherein the traction device is used to pull the lifting movement of the car 20, the monitoring device is used to monitor the status of the multiple traction machines 100, and the control device is used to determine whether the multiple traction machines 100 are synchronized based on the monitoring data, and adjust the abnormal traction machines 100 to achieve synchronous operation of the multiple traction machines 100, thereby improving the stability of the elevator operation.

[0049] Specifically, the traction device includes a driving component and a plurality of traction machines 100. The plurality of traction machines are installed on the top of the car 20 and are connected to the driving component. The driving component is used to drive the traction wheel 101 of the traction machine 100 to rotate and thereby pull the car 20 up and down.

[0050] For example, the plurality of traction machines 10 are divided into two rows, and the two rows of traction machines 10 are installed on both sides of the car 20 . The traction sheave 101 of each row of traction machines 10 is drivingly connected and connected to the synchronous sheave 1 .

[0051] Furthermore, the traction device also includes a traction rope 30, which is used to achieve the connection between the traction machine 100 and the car 20. Specifically, the traction rope 30 is provided on the traction wheel 101 of the traction machine 10 at the edge position of each row, and one end of the traction rope 30 is alternately passed around the traction wheels 101 of the other traction machines 10 in the same row, and then fixed to the counterweight, the traction wheel 101 rotates, the traction rope 30 is recovered, driving the car 20 to rise and the counterweight to descend, the traction wheel 101 rotates in the opposite direction, the traction rope 30 is released, driving the car 20 to descend and the counterweight to rise. It should be noted that the rotation directions of the traction wheels 101 of the two rows of traction machines 10 are opposite to ensure that the two rows of traction machines 10 act synchronously on the lifting and lowering of the car 20.

[0052] The monitoring device includes a synchronous wheel 1, which is installed on the top of the car 20, and the middle part of the traction rope 30 is fixed to the synchronous wheel 1. Through the above arrangement, during the raising or lowering process of the car 20, the traction wheels 101 of the two traction machines 10 rotate in opposite directions, and the two traction ropes 30 exert opposite forces on the synchronous wheel 1. When the forces exerted on the synchronous wheel 1 are offset, the synchronous wheel 1 does not rotate, and when the forces exerted on the synchronous wheel 1 are unbalanced, the synchronous wheel 1 rotates.

[0053] Furthermore, the monitoring device further includes an encoder 2, which is mounted on the synchronous wheel 1. Through the above arrangement, the synchronous wheel 1 serves as a medium for the rotation transmission of the traction wheel 101, and the rotation data of the synchronous wheel 1 represents the synchronization state of multiple traction wheels 101 in different columns. The encoder 2 collects the sum of the overall rotation data of the two columns of traction wheels 101 in real time, that is, the rotation data of the synchronous wheel 1, and generates it into an electronic signal.

[0054] Preferably, the encoder 2 is an absolute value rotary encoder.

[0055] The control device is connected to the driving component and the encoder 2. The control device receives the electronic signal generated by the encoder 2 and analyzes the electronic signal to determine whether the two rows of traction machines 10 are synchronized, and then adjusts the rotation speed of the abnormal row of traction machines 10 through the driving component to achieve synchronous operation of multiple traction machines 10.

[0056] For further information, see Figure 2 The control device includes a signal receiving module, a signal analyzing module and a signal transmitting module, wherein the encoder 2 is connected to the signal receiving module, the signal receiving module is configured to receive the electronic signal generated by the encoder 2, the signal analyzing module is connected to the signal receiving module, the signal analyzing module is configured to determine whether the multiple traction machines 10 are synchronized, the signal transmitting module connects the signal analyzing module and the driving component, and the signal transmitting module is configured to generate a control signal according to the adjustment parameter (that is, the rotation data of the synchronous wheel 1) and transmit it to the driving component.

[0057] In some feasible embodiments, the control device further includes a storage module, the storage module is connected to the signal analysis module, the storage module is configured to pre-store a synchronization error range, and the signal analysis module determines whether the multiple traction machines 10 are synchronized after receiving the synchronization error range stored in the storage module. Specifically, the signal analysis module analyzes the rotation data of the synchronous wheel 1 according to the electronic signal, and compares the rotation data of the synchronous wheel 1 with the synchronization error range. When the multiple traction wheels 101 are in a synchronized state, the rotation data of the synchronous wheel 1 is within the synchronization error range, and when the multiple traction wheels 101 are in an asynchronous state, the rotation data of the synchronous wheel 1 exceeds the synchronization error range.

[0058] Optionally, the signal analysis module includes a calculation unit and a comparison unit, the calculation unit is connected to the signal receiving module, the calculation unit is configured to receive electronic signals and analyze the rotation data of the synchronous wheel 1, the comparison unit is connected to the storage module, the calculation unit and the signal transmission module, the comparison unit is configured to receive the rotation data of the synchronous wheel 1 and compare it with the synchronization error range stored in the storage module to determine whether the multiple traction wheels 101 are in a synchronous state and transmit it to the signal transmission module.

[0059] Furthermore, the calculation unit is also connected to the signal transmission module. When multiple traction wheels 101 are in an asynchronous state, the calculation unit calculates and transmits the rotation data of the synchronous wheel 1 to the signal transmission module. The signal transmission module receives the adjustment parameters and generates a control signal. After the driving component receives and analyzes the control signal, it drives the abnormal traction machine 10 to adjust the speed separately to adjust the speed of the two traction wheels 101 to be synchronized.

[0060] In this embodiment, the driving component can independently control the two rows of traction machines 10 so as to adjust the speed in a targeted manner. For example, the driving component includes a signal unit and two driving units. The signal unit is connected to the signal transmission module. The signal unit is configured to receive and analyze the above-mentioned control signal. Both driving units are connected to the signal unit, and the two driving units correspond one-to-one to the two rows of traction machines 10. The driving unit is configured to drive the corresponding row of traction machines 10 to operate.

[0061] Specifically, the driving unit drives the traction sheave 101 connected to any traction machine 10 of the corresponding column, and drives the traction sheave 101 of the traction machines 10 of the column to run synchronously through the traction rope 30 .

[0062] Embodiment 2

[0063] This embodiment provides a control method for a multi-traction synchronous system, which is applied to the multi-traction synchronous system provided in the first embodiment and has a high degree of automation and rapid response.

[0064] See also Figure 3 , including the following steps:

[0065] S1, running the multi-traction system, the encoder 2 collects the rotation data of the synchronous wheel 1 in real time and generates an electronic signal;

[0066] S2, the control device receives the electronic signal and determines whether the two traction machines 10 are synchronized. If not, it goes to S3; if synchronized, it returns to S1;

[0067] S3. The control device controls the driving component to adjust the rotation speed of the traction machine 10 in the abnormal row.

[0068] Among them, S1 includes:

[0069] S11, running multiple traction machines 10, the encoder 2 collects the rotation data of the synchronous wheel 1 in real time;

[0070] S12, encoder 2 generates electronic signals from rotation data;

[0071] S13. The encoder 2 transmits the electronic signal to the control device.

[0072] Specifically, a plurality of traction machines 10 are started and operated to pull the elevator car 20 up and down, and the encoder 2 enters the working state, collects the rotation data of the synchronous wheel 1 in real time, and generates the rotation data into an electronic signal, and further transmits the electronic signal to the control device, for example, to the signal receiving module of the control device.

[0073] Among them, S2 includes:

[0074] S21, the signal receiving module receives the electronic signal;

[0075] S22. The signal analysis module determines whether the two traction machines 10 are synchronized.

[0076] To expand, S2 includes:

[0077] S221, the signal analysis module analyzes the rotation data of the synchronous wheel 1 according to the electronic signal;

[0078] S222, the signal analysis module compares the rotation data of the synchronous wheel 1 with the synchronization error range. If the rotation data of the synchronous wheel 1 exceeds the synchronization error range, the process goes to S3; if the rotation data of the synchronous wheel 1 is within the synchronization error range, the process returns to S1.

[0079] Specifically, the calculation unit in the signal receiving module receives the electronic signal generated by the encoder 2, and analyzes the rotation data of the synchronous wheel 1 based on the above electronic signal. Further, the comparison unit in the signal analysis module compares the rotation data of the above synchronous wheel 1 with the synchronization error range pre-stored in the storage module. If the rotation data of the synchronous wheel 1 exceeds the synchronization error range, it means that the two rows of traction machines 10 are in an asynchronous state, and the process goes to step S3. If the rotation data of the synchronous wheel 1 is within the synchronization error range, the two rows of traction machines 10 are in a synchronous state, and the process returns to step S1.

[0080] Furthermore, S3 includes:

[0081] S31, the signal transmission module generates a control signal according to the rotation data of the synchronous wheel 1;

[0082] S32, the driving component receives and analyzes the control signal, and drives the traction machine 10 of the abnormal column alone to adjust the rotation speed.

[0083] Specifically, the calculation unit in the signal analysis module transmits the rotation data of the synchronous wheel 1 (that is, the adjustment parameters) to the signal transmission module, and the signal transmission module receives and generates the above adjustment parameters into a control signal. The driving component receives and analyzes the above control signal, and separately controls the abnormal column of traction machines 10 to adjust the speed so as to keep the traction machines 10 on both sides synchronized.

[0084] Further, S32 includes:

[0085] S321, the signal unit receives and analyzes the control signal;

[0086] S322: The driving unit corresponding to the abnormal traction machine 10 receives the control signal and drives the corresponding traction machine 10 to adjust the rotation speed.

[0087] Specifically, after receiving the control signal, the signal unit analyzes the control signal to obtain the drive unit corresponding to the abnormal traction machine 10, and transmits the control signal to the drive unit, which adjusts the rotation speed of the abnormal traction machine 10 accordingly.

[0088] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A multi-traction synchronous system, characterized in that: include: A traction device, comprising a driving component and a plurality of traction machines (10), wherein the plurality of traction machines (10) are installed at the top of an elevator shaft, the plurality of traction machines (10) are connected to the driving component, and the traction machines (10) are configured to pull a car (20); A monitoring device, the monitoring device comprising a synchronous wheel (1) and an encoder (2), the synchronous wheel (1) being mounted on the top of the car (20), the plurality of traction machines (10) being arranged in two rows and respectively mounted on both sides of the synchronous wheel (1), the traction wheels (101) of each row of traction machines (10) being drivingly connected and connected to the synchronous wheel (1), the encoder (2) being mounted on the synchronous wheel (1), the encoder (2) being configured to collect rotation data of the synchronous wheel (1) in real time and generate an electronic signal; A control device, wherein the driving component and the encoder (2) are both connected to the control device, and the control device is configured to determine the synchronization state of the two columns of traction machines (10) based on the electronic signal, and transmit a control signal to the driving component in real time to adjust the rotation speed of the abnormal column of traction machines (10).

2. A multi-traction synchronous system according to claim 1, characterized in that: The control device comprises a signal receiving module, a signal analyzing module and a signal transmitting module, wherein the signal receiving module is configured to receive the electronic signal, the signal analyzing module is configured to determine whether the two rows of traction machines (10) are synchronized, and the signal transmitting module is configured to generate the control signal and transmit it to the driving component.

3. A multi-traction synchronous system according to claim 1, characterized in that: The control device further comprises a storage module, and the storage module is configured to pre-store a synchronization error range.

4. A control method for a multi-traction synchronous system, applied to a multi-traction synchronous system according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1, operating the multi-traction system, the encoder (2) collects the rotation data of the synchronous wheel (1) in real time and generates an electronic signal; S2, the control device receives the electronic signal and determines whether the two traction machines (10) are synchronized. If not, the process proceeds to S3; if synchronized, the process returns to S1; S3. The control device controls the driving component to adjust the rotation speed of the traction machine (10) in the abnormal row.

5. The control method of a multi-traction synchronous system according to claim 4, characterized in that: The S1 includes: S11, operating a plurality of the traction machines (10), wherein the encoder (2) collects the rotation data of the synchronous wheel (1) in real time; S12, the encoder (2) generates an electronic signal from the rotation data; S13. The encoder (2) transmits the electronic signal to the control device.

6. The control method of a multi-traction synchronous system according to claim 4, characterized in that: The S2 includes: S21, a signal receiving module receives the electronic signal; S22, the signal analysis module determines whether the two rows of traction machines (10) are synchronized.

7. A control method for a multi-traction synchronous system according to claim 6, characterized in that: The S22 includes: S221, the signal analysis module analyzes the rotation data of the synchronous wheel (1) according to the electronic signal; S222, the signal analysis module compares the rotation data of the synchronous wheel (1) with the synchronization error range. If the rotation data of the synchronous wheel (1) exceeds the synchronization error range, the process proceeds to S3; if the rotation data of the synchronous wheel (1) is within the synchronization error range, the process returns to S1.

8. The control method of a multi-traction synchronous system according to claim 4, characterized in that: The S3 includes: S31, the signal transmission module generates the control signal according to the rotation data of the synchronous wheel (1); S32, the driving component receives and analyzes the control signal, and drives the traction machine (10) of the abnormal column alone to adjust the rotation speed.

9. A control method for a multi-traction synchronous system according to claim 8, characterized in that: The driving component comprises a signal unit and two driving units, the signal unit being configured to receive and analyze the control signal, the driving unit being connected to the signal unit, the two driving units respectively driving traction wheels connected to two rows of traction machines (10), and the driving units being configured to drive the traction machines (10) corresponding to one row to operate.

10. A control method for a multi-traction synchronous system according to claim 9, characterized in that: The S32 includes: S321, the signal unit receives and analyzes the control signal; S322. The driving unit corresponding to the abnormal row of traction machines (10) receives the control signal and drives the corresponding traction machine (10) to adjust the rotation speed.

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