Automatic speed adjusting device for coke oven cart

Abstract

The utility model relates to the technical field of automatic control, and discloses a coke oven cart speed automatic adjusting device which comprises a cart power wheel, a frequency converter, a control system connecting line, a vehicle-mounted control system, an encoder detection module, an encoder connecting line, a cart driven wheel, a driving wheel upper encoder, a driven wheel upper encoder and a cart walking track. The encoder on the driving wheel is installed on the cart power wheel, the encoder on the driven wheel is installed on the cart driven wheel, and the cart power wheel and the cart driven wheel walk on the cart walking track. Different from the original fixed discrete given speed, stable speed control of the coke oven heavy load locomotive can be realized, the loss of a speed reducer can be reduced, the operation safety of the locomotive can be ensured, and the driving comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of automatic control technology, and in particular to an automatic speed adjustment device for coke oven trolleys. Background Technology

[0002] In coke oven production, the large inertia of the four main trolleys causes the speed feedback curve to lag significantly behind the output curve during operation. Furthermore, the addition of interlocking protection systems can interfere with speed control, making precise speed control by the control system particularly difficult. During vehicle startup, the speed setpoints provided by the trolley control system to the frequency converter are discrete. Under conditions of drastic load changes and varying track friction, the powered wheels can slip on the track, causing significant vehicle sway. During the vehicle stabilization phase, the frequency converter relies solely on feedback from the traveling motor. When the powered wheels slip on the track, the actual speed is not a true reflection of the set speed, resulting in an actual speed lower than the set speed. Simultaneously, due to the trolley's inertia and variations in track friction, the speed changes of the powered wheels inevitably cause fluctuations in the frequency converter's output power. This leads to vehicle vibration even when the trolley is traveling at a constant speed, increasing the equipment failure rate. During the deceleration phase of the vehicle, the heavy-duty trolley does not actually decelerate after receiving the deceleration command. The frequency converter only detects that the running motor has completed the deceleration, and the lack of feedback on the wheels sliding on the track causes the vehicle speed to lose control, which will affect the safe operation of the trolley and may even cause the trolley to derail. In more serious cases, it may also cause casualties. Utility Model Content

[0003] The purpose of this utility model is to solve the problems raised in the background art by proposing an automatic speed adjustment device for coke oven trolleys.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An automatic speed adjustment device for a coke oven trolley includes a trolley drive wheel, a frequency converter, a control system connection, an on-board control system, an encoder detection module, an encoder connection, a trolley driven wheel, an encoder on the drive wheel, an encoder on the driven wheel, and a trolley travel track. The encoder on the drive wheel is installed on the trolley drive wheel, and the encoder on the driven wheel is installed on the trolley driven wheel. The trolley drive wheel and the trolley driven wheel travel on the trolley travel track.

[0006] Preferably, the encoder detection module is connected to the encoder on the driving wheel and the encoder on the driven wheel respectively via a module-to-encoder connection to collect the actual running speed of the driving wheel and the driven wheel.

[0007] Preferably, the vehicle control system determines whether the vehicle is accelerating, decelerating, or moving at a constant speed by comparing the speeds of the driving and driven wheels.

[0008] Preferably, the vehicle control system is connected to the frequency converter via a connection between the frequency converter and the control system, and different control strategies are adopted to output different speed setting curves to the frequency converter.

[0009] Preferably, a traveling motor is installed on the power wheel of the trolley, and a speed feedback encoder is installed on the traveling motor. The frequency converter is connected to the traveling motor through a frequency converter-motor connection line to control the running speed of the motor, thereby realizing the control of the trolley speed. The speed feedback encoder is connected to the frequency converter through an encoder-frequency converter connection line to further correct the speed setpoint of the frequency converter in real time.

[0010] Compared with the prior art, this utility model provides an automatic speed adjustment device for coke oven trolleys, which has the following advantages:

[0011] This automatic speed adjustment device for the coke oven trolley determines whether the trolley is accelerating, decelerating, or moving at a constant speed by logically comparing the speed values ​​fed back by the drive wheel encoder and the driven wheel encoder. The control system then sets different control sliding modes for the frequency converter based on the driven wheel speed, ensuring a smooth change in the trolley's speed and preventing the drive wheel from slipping on the track. The control system provides real-time, dynamic, and continuous speed control to the frequency converter, unlike the original fixed, discrete speed settings. This enables smooth speed control of the heavy-duty coke oven locomotive, reducing reducer wear, ensuring safe locomotive operation, and improving driving comfort. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an automatic speed adjustment device for a coke oven trolley proposed in this utility model.

[0013] In the diagram: 1. Trolley drive wheel; 2. Traveling motor; 3. Speed ​​feedback encoder; 4. Inverter wiring; 5. Inverter; 6. Motor wiring; 7. Control system wiring; 8. On-board control system; 9. Encoder detection module; 10. Encoder wiring; 11. Trolley driven wheel; 12. Encoder on the drive wheel; 13. Encoder on the driven wheel; 14. Trolley travel track. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1An automatic speed adjustment device for a coke oven trolley includes a trolley power wheel 1, a frequency converter 5, a control system connection 7, an on-board control system 8, an encoder detection module 9, an encoder connection 10, a trolley driven wheel 11, an encoder on the drive wheel 12, an encoder on the driven wheel 13, and a trolley travel track 14. The encoder on the drive wheel 12 is installed on the trolley power wheel 1, and the encoder on the driven wheel 13 is installed on the trolley driven wheel 11. The trolley power wheel 1 and the trolley driven wheel 11 travel on the trolley travel track 14.

[0016] The encoder detection module 9 is connected to the encoder 12 on the driving wheel and the encoder 13 on the driven wheel via the module-to-encoder connection 10, respectively, to collect the actual running speed of the driving wheel and the driven wheel.

[0017] The vehicle control system 8 determines whether the vehicle is accelerating, decelerating, or moving at a constant speed by comparing the speeds of the driving and driven wheels.

[0018] The vehicle control system 8 is connected to the frequency converter 5 via the frequency converter and control system connection line 7, and different control strategies are adopted to output different speed setting curves to the frequency converter 5.

[0019] A traveling motor 2 is installed on the power wheel 1 of the trolley. A speed feedback encoder 3 is installed on the traveling motor 2. A frequency converter 5 is connected to the traveling motor 2 through a frequency converter-motor connection line 6 to control the running speed of the motor, thereby realizing the control of the speed of the trolley. The speed feedback encoder 3 is connected to the frequency converter 5 through an encoder-frequency converter connection line 4 to make real-time corrections to the speed setpoint of the frequency converter 5.

[0020] In this utility model:

[0021] The model of inverter 5 is: G1306SL3310-1GH31-0AA3-Z T93;

[0022] The model number of the speed feedback encoder 3 is: KOYO TRD-N1200-RZW;

[0023] The encoder 12 on the drive wheel has the model number 6FX2001-2CF00;

[0024] The encoder 13 on the driven wheel is model number 6FX2001-2CF00;

[0025] The model number of encoder detection module 9 is: 6SL3055-0AA00-5CA2;

[0026] The model of the vehicle control system 8 is: CPU414-3PN / DP;

[0027] The model of the traveling motor 2 is: YZP225M-6660V 50HZ 37KW 40A.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic speed adjustment device for a coke oven trolley, comprising a trolley power wheel (1), a frequency converter (5), a control system wiring (7), an on-board control system (8), an encoder detection module (9), an encoder wiring (10), a trolley driven wheel (11), an encoder on the driving wheel (12), an encoder on the driven wheel (13), and a trolley travel track (14), characterized in that, The encoder (12) on the driving wheel is mounted on the trolley power wheel (1), and the encoder (13) on the driven wheel is mounted on the trolley driven wheel (11). The trolley power wheel (1) and the trolley driven wheel (11) travel on the trolley travel track (14).

2. The automatic speed adjustment device for a coke oven trolley according to claim 1, characterized in that, The encoder detection module (9) is connected to the encoder (12) on the drive wheel and the encoder (13) on the driven wheel through the module-to-encoder connection (10) to collect the actual running speed of the drive wheel and the driven wheel.

3. The automatic speed adjustment device for a coke oven trolley according to claim 1, characterized in that, The vehicle control system (8) determines whether the vehicle is accelerating, decelerating or moving at a constant speed by comparing the speeds of the driving wheel and the driven wheel.

4. The automatic speed adjustment device for a coke oven trolley according to claim 1, characterized in that, The vehicle control system (8) is connected to the frequency converter (5) through the frequency converter and control system connection line (7), and adopts different control strategies to output different speed setting curves to the frequency converter (5).

5. The automatic speed adjustment device for a coke oven trolley according to claim 1, characterized in that, The traveling motor (2) is installed on the power wheel (1) of the trolley, and the speed feedback encoder (3) is installed on the traveling motor (2). The frequency converter (5) is connected to the traveling motor (2) through the frequency converter-motor connection line (6) to control the running speed of the motor, thereby realizing the control of the speed of the trolley. The speed feedback encoder (3) is connected to the frequency converter (5) through the encoder-frequency converter connection line (4) to correct the speed setpoint of the frequency converter (5) in real time.

Images