Multi-traction synchronous system

Abstract

The utility model belongs to the technical field of elevators, and discloses a multi-traction synchronous system which is used for dragging a lift car in an elevator shaft, a traction device comprises a driving part, a traction rope and a plurality of traction machines installed on the top of the elevator shaft, and the traction machines are installed on the two sides of the lift car respectively. A traction rope is arranged on a traction wheel of the traction machine at the edge position of each column, one end of the traction rope alternately bypasses traction wheels of other traction machines of the same column and then is fixed to the top of the lift car, and the driving component drives the traction wheels to rotate so as to pull the lift car to ascend and descend. The monitoring device is used for collecting the sum of overall rotation data of the two rows of traction wheels in real time and generating an electronic signal, and the control center is connected with the monitoring device and the driving component and is configured to judge the synchronous state of the two rows of traction wheels according to the electronic signal, transmit a control signal to the driving component in real time and adjust the rotation speed of the abnormal row of traction wheels. Therefore, synchronous operation of the multiple traction machines is achieved, and then the operation stability of the elevator is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a multi-traction synchronization system. Background Technology

[0002] The traction machine is one of the core components of an elevator system, mainly used to traction the elevator car to move up and down via steel cables. In the elevator operation system, a multi-traction system is a technical solution to improve the efficiency, stability and safety of elevator operation. Traditional elevators usually use a single traction machine to drive the car up and down, while a multi-traction system uses two or more traction machines to work simultaneously. By having multiple traction machines work at the same time, the load can be distributed more effectively, supporting heavier loads or faster speeds. This helps reduce problems caused by the failure of a single motor, increases the redundancy and reliability of the system, and reduces the mechanical stress on each traction machine due to the distribution of force, which helps extend the service life of the equipment. However, the synchronicity of the coordinated work of multiple traction machines is directly related to the quality of elevator operation. Utility Model Content

[0003] The purpose of this invention is to provide a multi-traction synchronization system that can pull the elevator car up and down in the elevator shaft, achieve precise synchronization of multiple traction machines, and improve the stability of elevator operation.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A multi-traction synchronization system for traction of elevator cars in an elevator shaft, comprising:

[0006] The traction device includes a drive unit, traction ropes, and multiple traction machines installed at the top of the elevator shaft. The multiple traction machines are all connected to the drive unit and are arranged in two rows. The two rows of traction machines are installed on both sides of the car. Each traction machine at the edge of the row has a traction rope on its traction sheave. One end of the traction rope alternately passes over the traction sheaves of the other traction machines in the same row and is then fixed to the top of the car. The drive unit is connected to the multiple traction machines and is used to drive the traction sheaves to rotate in order to pull the car up and down.

[0007] A monitoring device is used to collect the sum of the overall rotation data of the two traction sheaves in real time and generate electronic signals;

[0008] The control center is connected to both the monitoring device and the drive component. The control center is configured to determine the synchronization status of the two traction sheaves based on the electronic signals and transmit control signals to the drive component in real time to adjust the speed of the traction sheave in the abnormal one.

[0009] Preferably, the traction device further includes a timing pulley, which is installed on the top of the car, and the middle of the traction rope is fixed to the timing pulley.

[0010] Preferably, the monitoring device includes an encoder mounted on the synchronous pulley to collect the rotation data of the synchronous pulley in real time and generate electronic signals.

[0011] Preferably, the control center includes a signal receiving module, a signal analysis module, and a signal transmission module. The encoder is connected to the signal receiving module, which is configured to receive the electronic signal. The signal analysis module is connected to the signal receiving module and is configured to determine whether the multiple traction sheaves are synchronized. The signal transmission module is connected to the signal analysis module and the drive component, and is configured to generate the control signal and transmit it to the drive component.

[0012] Preferably, the control center further includes a storage module 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 wheels are synchronized based on the synchronization error range.

[0013] Preferably, the signal analysis module includes a calculation unit and a comparison unit. The calculation unit is connected to the signal receiving module and is configured to receive the electronic signal and analyze the rotation data of the synchronous pulley. The comparison unit is connected to the storage module, the calculation unit, and the signal transmission module. The comparison unit is configured to compare the rotation data of the synchronous pulley with the synchronization error range, determine the synchronization status of the two traction pulleys, and transmit the result to the signal transmission module.

[0014] When the multiple traction sheaves are in a synchronized state, the rotation data of the synchronizing sheaves is within the synchronization error range; when the multiple traction sheaves are in a asynchronous state, the rotation data of the synchronizing sheaves exceeds the synchronization error range.

[0015] Preferably, the driving component includes a signal unit connected to the signal transmission module, and the signal unit is configured to receive and analyze the control signal.

[0016] Preferably, the drive component further includes two drive units connected to the signal unit, the two drive units respectively driving the traction sheaves connected to the two columns of traction machines, and the drive units are configured to drive the traction machines of a corresponding column to run.

[0017] Preferably, the encoder is an absolute rotary encoder.

[0018] The beneficial effects of this utility model are:

[0019] This utility model discloses a multi-traction synchronization system for traction of an elevator car in a shaft. The traction device includes a drive component, traction ropes, and multiple traction machines installed at the top of the elevator shaft. Each traction machine is connected to the drive component and is installed on both sides of the car. Each traction machine at the edge of the row has a traction rope on its traction sheave. One end of the traction rope alternately passes over the traction sheaves of the other traction machines in the same row and is fixed to the top of the car. The drive component drives the traction sheaves to rotate, thereby tractioning the car up and down. A monitoring device is used to collect the sum of the overall rotation data of the two rows of traction sheaves in real time and generate an electronic signal. The monitoring device and the drive component are both connected to a control center. The control center is configured to determine the synchronization status of the two rows of traction sheaves based on the electronic signal and transmit control signals to the drive component in real time to adjust the speed of the abnormal row of traction sheaves, so as to achieve synchronous operation of multiple traction machines and improve the stability of elevator operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the multi-traction synchronization system provided in this embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the modules provided in an embodiment of the present utility model;

[0022] Figure 3 This is a flowchart of the control method for the multi-traction synchronization system provided in this embodiment of the utility model.

[0023] In the picture:

[0024] 10. Car; 1. Traction machine; 11. Traction sheave; 2. Traction rope; 3. Synchronous pulley; 4. Encoder. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0026] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0029] This embodiment provides a multi-traction synchronization system that can pull the elevator car up and down in the elevator shaft, achieve precise synchronization of multiple traction machines, and thus improve the stability of elevator operation.

[0030] Please see Figure 1 A multi-traction synchronization system includes a traction device, a monitoring device, and a control center. The traction device is used to pull the car 10 up and down. The monitoring device is used to monitor the status of the multiple traction machines 1. The control center is used to determine whether the multiple traction machines 1 are synchronized based on the monitoring data, and to adjust the abnormal traction machines 1 to achieve synchronized operation of the multiple traction machines 1, thereby improving the stability of elevator operation.

[0031] Specifically, the traction device includes a drive unit, a traction rope 2, and multiple traction machines 1. The multiple traction machines 1 are all installed on the top of the car 10, and the multiple traction machines 1 are all connected to the drive unit. The drive unit is used to drive the traction wheel 11 of the traction machine 1 to rotate, thereby pulling the car 10 up and down. The traction rope 2 is used to connect the traction machine 1 and the car 10.

[0032] For example, multiple traction machines 1 are arranged in two rows, with the two rows of traction machines 1 installed on both sides of the car 10. Each traction machine 1 at the edge of the row has a traction rope 2 on its traction sheave 11. One end of the traction rope 2 alternately passes over the traction sheaves 11 of the other traction machines 1 in the same row and is then fixed to the counterweight. When the traction sheaves 11 rotate, the traction rope 2 is retracted, causing the car 10 to rise and the counterweight to fall. When the traction sheaves 11 rotate in the opposite direction, the traction rope 2 is released, causing the car 10 to fall and the counterweight to rise. It should be noted that the traction sheaves 11 of the two rows of traction machines 1 rotate in opposite directions to ensure that the two rows of traction machines 1 act synchronously on the raising and lowering of the car 10.

[0033] The traction device also includes a timing pulley 3, which is installed on the top of the car 10. The middle of each traction rope 2 is fixed to the timing pulley 3. With the above arrangement, during the raising or lowering of the car 10, the traction pulleys 11 of the two traction machines 1 rotate in opposite directions, and the forces exerted by the two traction ropes 2 on the timing pulleys 3 are opposite. When the forces acting on the timing pulleys 3 cancel each other out, the timing pulleys 3 do not rotate. When the forces acting on the timing pulleys 3 are unbalanced, the timing pulleys 3 rotate.

[0034] The monitoring device includes an encoder 4, specifically mounted on the synchronous pulley 3. With the above configuration, the synchronous pulley 3 serves as the medium for transmitting the rotation of the traction sheaves 11. The rotation data of the synchronous pulley 3 represents the synchronization status of multiple traction sheaves 11 in different columns. The encoder 4 collects the sum of the overall rotation data of the two columns of traction sheaves 11 in real time, which is also the rotation data of the synchronous pulley 3, and generates it as an electronic signal.

[0035] Preferably, encoder 4 is an absolute rotary encoder.

[0036] The control center is connected to the drive unit and encoder 4. The control center receives the electronic signal generated by encoder 4 and analyzes the electronic signal to determine whether the two traction machines 1 are synchronized. Then, the drive unit adjusts the speed of the abnormal traction machine 1 to achieve synchronous operation of multiple traction machines 1.

[0037] Further, please refer to Figure 2 The control center includes a signal receiving module, a signal analysis module, and a signal transmission module. The encoder 4 is connected to the signal receiving module, which is configured to receive electronic signals generated by the encoder 4. The signal analysis module is connected to the signal receiving module and is configured to determine whether multiple traction machines 1 are synchronized. The signal transmission module is connected to the signal analysis module and the drive component, and is configured to generate control signals based on adjustment parameters (i.e., the rotation data of the synchronous pulley 3) and transmit them to the drive component.

[0038] In some feasible embodiments, the control center also includes a storage module connected to the signal analysis module. The storage module is configured to pre-store a synchronization error range. After receiving the synchronization error range stored in the storage module, the signal analysis module determines whether the multiple traction machines 1 are synchronized. Specifically, the signal analysis module analyzes the rotation data of the synchronization wheel 3 based on electronic signals, compares the rotation data of the synchronization wheel 3 with the synchronization error range. When the multiple traction wheels 11 are synchronized, the rotation data of the synchronization wheel 3 is within the synchronization error range; when the multiple traction wheels 11 are out of sync, the rotation data of the synchronization wheel 3 exceeds the synchronization error range.

[0039] Optionally, the signal analysis module includes a calculation unit and a comparison unit. The calculation unit is connected to the signal receiving module and is configured to receive electronic signals and analyze the rotation data of the synchronous wheel 3. 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 3 and compare it with the synchronization error range stored in the storage module to determine whether the multiple traction wheels 11 are in a synchronized state and transmit it to the signal transmission module.

[0040] Furthermore, the computing unit is also connected to the signal transmission module. When multiple traction wheels 11 are in different states, the computing unit directly transmits the rotation data of the synchronous wheel 3 to the signal transmission module. The signal transmission module receives the adjustment parameters (i.e., the rotation data of the synchronous wheel 3) and generates control signals. After receiving and analyzing the control signals, the drive component drives the traction machine 1 of the abnormal column to adjust the speed, so as to adjust the speed of the two columns of traction wheels 11 to be synchronized.

[0041] In this embodiment, the drive unit can control the two traction machines 1 individually so as to make targeted speed adjustments. For example, the drive unit includes a signal unit and two drive units. The signal unit is connected to the signal transmission module and is configured to receive and analyze the control signal. The two drive units are both connected to the signal unit and correspond one-to-one with the two traction machines 1. The drive unit is configured to drive the traction machine 1 of the corresponding column to run.

[0042] Specifically, the drive unit drives the traction sheave 11 connected to any of the traction machines 1 in its corresponding column, and drives the traction sheave 11 of that column of traction machines 1 to run synchronously through the traction rope 2.

[0043] Please see Figure 3 This embodiment also provides a control method for a multi-traction synchronization system, which has a high degree of automation and rapid response.

[0044] Specifically, it includes the following steps:

[0045] S1. The multi-traction system is in operation. The encoder 4 collects the rotation data of the synchronous pulley 3 in real time and generates electronic signals.

[0046] S2. The control center receives electronic signals and determines whether the two traction machines 1 are synchronized. If they are not synchronized, it proceeds to S3. If they are synchronized, it returns to S1.

[0047] S3, The control center controls the drive components to adjust the speed of the traction machine 1 in the abnormal column.

[0048] S1 includes:

[0049] S11. Multiple traction machines 1 are running, and encoder 4 collects the rotation data of synchronous pulley 3 in real time;

[0050] S12, encoder 4 generates electronic signals from rotation data;

[0051] S13 and encoder 4 transmit electronic signals to the control center.

[0052] Specifically, multiple traction machines 1 are started and run to pull the elevator car 10 up and down. The encoder 4 enters the working state, collects the rotation data of the synchronous wheel 3 in real time, and generates the rotation data into an electronic signal. Further, the electronic signal is transmitted to the control center, for example, to the signal receiving module of the control center.

[0053] S2 includes:

[0054] S21, The signal receiving module receives electronic signals;

[0055] S22, The signal analysis module determines whether the two traction machines 1 are synchronized.

[0056] To elaborate, S2 includes:

[0057] S221, The signal analysis module analyzes the rotation data of the synchronous wheel 3 based on the electronic signal;

[0058] S222: The signal analysis module compares the rotation data of the synchronous wheel 3 with the synchronization error range. If the rotation data of the synchronous wheel 3 exceeds the synchronization error range, it proceeds to S3. If the rotation data of the synchronous wheel 3 is within the synchronization error range, it returns to S1.

[0059] Specifically, the calculation unit in the signal receiving module receives the electronic signal generated by the encoder 4 and analyzes the rotation data of the synchronous wheel 3 based on the electronic signal. Further, the comparison unit in the signal analysis module compares the rotation data of the synchronous wheel 3 with the synchronization error range pre-stored in the storage module. If the rotation data of the synchronous wheel 3 exceeds the synchronization error range, it means that the two traction machines 1 are out of sync and proceeds to step S3. If the rotation data of the synchronous wheel 3 is within the synchronization error range, the two traction machines 1 are in sync and return to step S1.

[0060] Furthermore, S3 includes:

[0061] S31, The signal transmission module generates a control signal based on the rotation data of the synchronous wheel 3;

[0062] S32. The drive unit receives and analyzes the control signal, and drives the traction machine 1 of the abnormal column to adjust the speed.

[0063] Specifically, the calculation unit in the signal analysis module transmits the adjustment parameters (i.e., the rotation data of the synchronous wheel 3) to the signal transmission module, which receives and generates the adjustment parameters into control signals. The drive component receives and analyzes the control signals and controls the traction machine 1 of the abnormal column to adjust its speed to keep the traction machines 1 of both columns synchronized.

[0064] Furthermore, S32 includes:

[0065] S321, The signal unit receives and analyzes control signals;

[0066] S322. The drive unit corresponding to the traction machine 1 in the abnormal column receives the control signal and drives the corresponding traction machine 1 to adjust the speed.

[0067] Specifically, after receiving the control signal, the signal unit analyzes the control signal to determine the drive unit corresponding to the abnormal traction machine 1, and transmits the control signal to the drive unit, which then adjusts the speed of the abnormal traction machine 1 accordingly.

[0068] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A multi-traction synchronization system for traction of an elevator car (10) in an elevator shaft, characterized in that, include: The traction device includes a drive component, a traction rope (2), and multiple traction machines (1) installed on the top of the elevator shaft. The multiple traction machines (1) are all connected to the drive component and are arranged in two rows. The two rows of traction machines (1) are installed on both sides of the car (10). The traction sheave (11) of the traction machine (1) at the edge of each row is provided with the traction rope (2). One end of the traction rope (2) alternately passes around the traction sheave (11) of the other traction machines (1) in the same row and is then fixed to the top of the car (10). The drive component is connected to the multiple traction machines (1) and is used to drive the traction sheave (11) to rotate so as to pull the car (10) up and down. A monitoring device is used to collect the sum of the overall rotation data of the two traction wheels (11) in real time and generate electronic signals; The control center is connected to both the monitoring device and the drive component. The control center is configured to determine the synchronization status of the two traction sheaves (11) based on the electronic signal and transmit control signals to the drive component in real time to adjust the rotational speed of the abnormal traction sheave (11).

2. The multi-traction synchronization system according to claim 1, characterized in that, The traction device also includes a timing pulley (3), which is installed on the top of the car (10), and the middle of the traction rope (2) is fixed to the timing pulley (3).

3. A multi-traction synchronization system according to claim 2, characterized in that, The monitoring device includes an encoder (4), which is installed on the synchronous pulley (3) to collect the rotation data of the synchronous pulley (3) in real time and generate electronic signals.

4. A multi-traction synchronization system according to claim 3, characterized in that, The control center includes a signal receiving module, a signal analysis module, and a signal transmission module. The encoder (4) is connected to the signal receiving module, which is configured to receive the electronic signal. The signal analysis module is connected to the signal receiving module and is configured to determine whether the multiple traction wheels (11) are synchronized. The signal transmission module is connected to the signal analysis module and the drive component, and is configured to generate the control signal and transmit it to the drive component.

5. A multi-traction synchronization system according to claim 4, characterized in that, The control center also includes a storage module connected to the signal analysis module. The storage module is configured to pre-store the synchronization error range. The signal analysis module determines whether the multiple traction wheels (11) are synchronized based on the synchronization error range.

6. A multi-traction synchronization system according to claim 5, characterized in that, The signal analysis module includes a calculation unit and a comparison unit. The calculation unit is connected to the signal receiving module and is configured to receive the electronic signal and analyze the rotation data of the synchronous wheel (3). The comparison unit is connected to the storage module, the calculation unit and the signal transmission module. The comparison unit is configured to compare the rotation data of the synchronous wheel (3) with the synchronization error range, determine the synchronization status of the two traction wheels (11) and transmit it to the signal transmission module. When the multiple traction wheels (11) are in a synchronized state, the rotation data of the synchronization wheel (3) is within the synchronization error range; when the multiple traction wheels (11) are in a asynchronous state, the rotation data of the synchronization wheel (3) exceeds the synchronization error range.

7. A multi-traction synchronization system according to claim 4, characterized in that, The driving component includes a signal unit connected to the signal transmission module, and the signal unit is configured to receive and analyze the control signal.

8. A multi-traction synchronization system according to claim 7, characterized in that, The drive component also includes two drive units connected to the signal unit. The two drive units drive the traction wheels connected to the two columns of traction machines (1) respectively. The drive units are configured to drive the traction machines (1) of the corresponding column to run.

9. A multi-traction synchronization system according to claim 3, characterized in that, The encoder (4) is an absolute rotary encoder.

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