Suspension type monorail turnout lockpin control system
By introducing a control system for power push rod, electrical parameter detection, displacement detection and lock pin position detection into the suspended single-track switch, the problems of lock pin depth changes and power phase sequence changes are solved, precise control and safe operation of lock pins are achieved, and the reliability and safety of the switch system are improved.
Patent Information
- Application Number
- CN202422356749.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-26
AI Technical Summary
When the gap changes caused by thermal expansion and contraction of the rail beam and the switch beam of the existing suspended single-track switch, the change in the locking pin depth affects the working reliability and safety of the switch, and the change in the power supply phase sequence leads to the wrong direction of the locking pin, which poses a safety hazard.
The control system consisting of a power push rod, an electrical parameter detection device, a displacement detection device, a lock pin position detection device and a logic control module is adopted to detect the electrical parameters, displacement and lock pin position status, adaptive lock depth control and automatic switching of the power push rod motor direction to ensure the precise expansion and contraction of the lock pin and safe operation.
Improve the accuracy and safety of locking pin control, avoid locking pin problems caused by thermal expansion and contraction and power phase sequence changes, and improve the reliability and safety of the switch system.
Smart Images
Figure CN223116365U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of suspended single track switches, and particularly relates to a lock pin control system for a suspended single track switch. Background Art
[0002] Suspended switches can be divided into two categories according to their switch rail structures: integral movable type and internally movable core type. The integral movable switch changes the line type by the overall movement of the switch rail beam to change the train running direction. The locking device of the integral movable switch usually sets a power push rod to push the lock pin to move linearly, so as to realize the linear alignment, unlocking and locking operations of the switch rail beam and the track beam when in place. The existing technology generally adopts a lock pin control method with a fixed given distance. When the track beam and the switch rail beam suspended in the air undergo thermal expansion and contraction, especially when there is a large thermal deformation in the longitudinal direction of the beam body, the gap between the track beam and the switch rail beam will change greatly, and the depth of the lock pin will change. If the lock pin depth is too long, it will affect the overall working time of the switch. If the lock pin depth is too shallow, the locking force will be insufficient and the switch position signal triggering will be unreliable, reducing the reliability and safety of the switch system. Summary of the Utility Model
[0003] In order to solve the above problems existing in the prior art, the utility model provides a lock pin control system for a suspended single track switch.
[0004] The technical problems to be solved by the utility model are realized through the following technical solutions:
[0005] The utility model provides a lock pin control system for a suspended single track switch, including: a power push rod, an electrical parameter detection device, a displacement detection device, a lock pin position detection device, a logic control module and a driving unit; wherein,
[0006] The power push rod is installed on the switch rail beam and connected to the lock pin. By the extension and contraction of the power push rod, the lock pin is driven to realize the locking or unlocking of the switch rail beam and the track beam;
[0007] The electrical parameter detection device is connected to the incoming line power supply of the switch control system, and is used for detecting the electrical parameters of the switch control system power supply and sending the obtained electrical parameter signal to the logic control module;
[0008] The displacement detection device is installed on the power push rod and is used for detecting the action displacement of the power push rod and sending the obtained displacement signal to the logic control module;
[0009] The lock pin position detection device is installed on the track beam and is used for detecting the position state of the lock pin and sending the obtained lock pin position state signal to the logic control module;
[0010] The logic control module is used to receive, record, process, and judge the electrical parameter signal, the displacement signal, and the locking pin position status signal, and generate a control signal to be sent to the drive unit;
[0011] The drive unit is used to receive the control signal and control the motion state of the power push rod according to the control signal.
[0012] Further, the electrical parameters include phase sequence, phase voltage, and voltage distortion rate.
[0013] Further, the displacement detection device is any one of an encoder, a potentiometer, and a wire-drawing displacement sensor.
[0014] Further, the locking pin position detection device is a position switch.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] Through this control system, the present utility model can achieve the following beneficial effects:
[0017] 1. This control system has an adaptive locking depth control function, which can significantly improve the telescopic control accuracy of the locking pin, effectively compensate for the change in the depth of the locking pin caused by thermal expansion and contraction, avoid various problems caused by the change in the locking depth of the locking pin, and improve the reliability of the system;
[0018] 2. This control system has an automatic switching function for the direction of the power push rod motor, which can solve the problem of the change in the direction of the locking pin caused by the change in the phase sequence of the system power supply, prevent the mechanism from reversing and causing danger, and improve the usability and safety of the system;
[0019] 3. This locking pin control system can reasonably control the unlocking and locking processes of the locking pin, and improve the safety and reliability in the working process of the turnout system in a relatively economical and simple way, especially improving the control accuracy and safety of the locking pin operation. Description of the Drawings
[0020] Figure 1 is the overall structural schematic diagram of the present utility model;
[0021] Figure 2 is the logical architecture schematic diagram of the locking pin control system.
[0022] Description of the Reference Numerals:
[0023] 1 - power push rod; 2 - electrical parameter detection device; 3 - displacement detection device; 4 - locking pin position detection device; 5 - logic control module; 6 - drive unit; 7 - turnout beam; 8 - locking pin; 9 - track beam; 10 - locking pin seat. Detailed Embodiment
[0024] The present utility model will be further described in detail below in conjunction with specific embodiments, but the implementation manners of the present utility model are not limited thereto.
[0025] Embodiment 1
[0026] The embodiment of the present utility model provides a hanging single-track switch lock pin control system, which specifically includes: a power push rod, an electrical parameter detection device, a displacement detection device, a lock pin position detection device, a logic control module, and a driving unit; wherein,
[0027] The power push rod is installed on the switch beam and is connected to the lock pin. By the elongation and contraction of the power push rod, the lock pin is driven to lock or unlock the switch beam and the switch beam. The power push rod is the power source of the lock pin and can move linearly. Its telescopic action direction is as Figure 1 shown by the bidirectional arrow. The lock pin is pushed by the power push rod to extend and contract, so as to insert into or disengage from the lock pin seat on the track beam, and then complete the locking and unlocking tasks during the switch turnout process.
[0028] The electrical parameter detection device is electrically connected to the incoming line power supply of the switch control system and the logic control module, and is used to detect the electrical parameters of the incoming line power supply of the switch control system and send the obtained electrical parameter signals to the logic control module. The logic control module receives and judges whether the electrical parameters of the switch control system are correct. The electrical parameters include phase sequence, phase voltage, and voltage distortion rate, and are transmitted to the logic control module by means of digital communication; the electrical parameter detection device can specifically be a phase detector.
[0029] The displacement detection device is installed on the power push rod and is electrically connected to the logic control module, and is used to detect the action displacement, that is, the telescopic length, during the working process of the power push rod in real time, and send the detected displacement signal to the logic control module. The displacement detection device can specifically be an encoder, a potentiometer, or a wire-drawing type displacement sensor. The signal output by the displacement detection device can be an analog signal such as resistance or current, or a digital signal such as pulse or code. Specifically, the displacement of the power push rod can be calculated by measuring the number of rotation turns of the motor power source in the power push rod, or the length of the linear motion component of the power push rod can be directly measured to calculate the displacement. In the embodiment of the present utility model, the coding method is selected for digital signal transmission.
[0030] The pin position detection device is installed on the track beam and electrically connected to the logic control module. It is used to detect the position state of the pin and send the obtained pin position state signal to the logic control module via hard wire. The pin position detection device captures the falling edge trigger signal when the pin leaves the locked position. The pin position state signal includes the pin locking state signal and the pin unlocking state signal, that is, the in-place and leaving signals of the pin. The pin position detection device can specifically be a position switch.
[0031] The logic control module serves as the control and communication core. It is used to receive and record the electrical parameter signals sent by the electrical parameter detection device, the displacement signals sent by the displacement detection device, and the pin position state signals sent by the pin position detection device respectively. After processes such as logical judgment and numerical calculation, it generates control signals and sends them to the drive unit. These control signals are start, stop, forward and reverse signals. At the same time, the logic control module will send the motor speed control coding signal of the power push rod to the drive unit to control the action speed of the power push rod. It can also change the action speed of the power push rod by sending a signal to change the motor speed control coding signal of the power push rod during the operation of the drive unit, thereby adjusting the telescopic speed of the pin. The logic control module can specifically be a PLC.
[0032] The drive unit is used to receive the control signals sent by the logic control module and control the motion state of the power push rod according to the control signals. The motion state includes start, stop, forward and reverse, and rotational speed. The forward and reverse are the motor states of the power push rod, which are intuitively manifested as the telescopic state of the power push rod. The drive unit can specifically be a servo driver.
[0033] The logic control module is the core control module to complete the functions of adaptive locking depth control and automatic switching of the motor direction of the power push rod. Among them, the basic process to complete the adaptive locking depth control function is: judge the withdrawal amount of the pin pulled by the power push rod after leaving the detection point of the pin position detection device during the unlocking process of the pin through the pin position state signal and the displacement signal, and use it as the extension amount of the power push rod when controlling the next pin locking. Finally, when the pin is locked, the extension amount of the power push rod is added with a safety margin on the above basic value. The safety margin is a fixed value determined during the turnout design to ensure the reliable operation of the sensor of the pin position detection device. Through the above process, the purpose that the elongation amount of the power push rod includes the change value of the pin depth caused by thermal expansion and contraction can be achieved each time the pin is locked, and at the same time, the control accuracy of the pin is improved.
[0034] Among them, the basic process of completing the automatic switching function of the power push rod motor direction is as follows: The phase sequence situation of the incoming power supply of the turnout system is judged based on parameters such as the phase sequence signal and phase voltage signal obtained by the electrical parameter detection device, and faults such as phase loss and voltage distortion are excluded. The logic control module automatically adjusts and issues commands for the power push rod to extend and retract, and sends them to the drive unit. The drive unit adjusts the forward and reverse rotation of the power push rod motor according to the received control command.
[0035] Embodiment 2
[0036] An embodiment of the present utility model discloses a locking pin control method for a suspended single-track turnout, which is realized by using the locking pin control system in the embodiment, including an unlocking control method and a locking control method. The embodiment of the present utility model is described according to a complete process of locking pin unlocking and locking actions:
[0037] When the turnout system needs to complete a switching task, it sequentially includes an unlocking and a locking task.
[0038] First, when unlocking the locking pin, the logic control module obtains the phase sequence, phase voltage, and voltage distortion rate of the incoming power supply of the turnout control system from the electrical parameter detection device for processing and judgment. If it is detected that the phase sequence conforms to the preset phase sequence, that is, there is no phase error; the phase voltages are all within the deviation range, that is, there is no phase loss; the voltage distortion rates are all within the deviation range and the voltage waveform is normal; then when unlocking, the logic control module sends a reverse command to the drive unit to control the motor of the power push rod to reverse, so that the power push rod retracts and pulls the locking pin to unlock. If it is detected that the phase sequence does not conform to the preset phase sequence, that is, there is a phase error; the phase voltages are all within the deviation range, that is, there is no phase loss; the voltage distortion rates are all within the deviation range and the voltage waveform is normal; then when unlocking, the logic control module sends a forward command to the drive unit to control the motor of the power push rod to reverse, so that the power push rod retracts and pulls the locking pin to unlock. That is, when there is a phase error in the power supply, a forward command is sent to the drive unit through the logic control module to keep the power push rod motor reversing to complete unlocking. Other situations are all considered as power supply faults of the turnout system, and the logic control module throws a fault signal. If no fault occurs in the above steps, the normal unlocking operation starts.
[0039] Then, the logic control module receives in real time the locking pin position status signal sent by the locking pin position detection device and the displacement signal sent by the displacement detection device. When the locking pin leaves the trigger position of the locking pin position detection device, when the logic control module receives this falling-edge trigger signal, it records the displacement value S1 of the locking pin at that time. It should be noted that since the track beam and the turnout beam have undergone thermal expansion and contraction deformation in the open air environment from the last locking to the current unlocking, that is, the gap between the two has changed, and the locking depth of the locking pin will also change. Then the displacement S1 recorded when the locking pin leaves the trigger position of the locking pin position detection device is the displacement amount after including the change in the locking depth.
[0040] Meanwhile, during the turnout unlocking operation, the logic control module will simultaneously send a higher speed control value to the drive unit, causing the drive unit to control the power push rod and the locking pin to act at the maximum unlocking speed.
[0041] After the turnout beam is switched to the target turnout position, the locking pin starts to lock. Before the locking pin locks, the target displacement S2 of the power push rod extension needs to be set through the logic control module as S2 = S1 + safety margin. The safety margin is usually a constant.
[0042] The logic control module obtains the phase sequence, phase voltage, and voltage distortion rate of the turnout system from the electrical parameter detection device, processes and judges them. If the detected phase sequence conforms to the preset phase sequence, that is, there is no phase error; the phase voltages are all within the deviation range, that is, there is no phase loss; the voltage distortion rates are all within the deviation range, and the voltage waveform is normal; then when locking, the logic control module sends a forward rotation command to the drive unit to control the motor of the power push rod to rotate forward, so that the power push rod extends and pushes the locking pin to lock. If the detected phase sequence does not conform to the preset phase sequence, that is, there is a phase error; the phase voltages are all within the deviation range, that is, there is no phase loss; the voltage distortion rates are all within the deviation range, and the voltage waveform is normal; then when locking, the logic control module sends a reverse rotation command to the drive unit to control the motor of the power push rod to rotate forward, so that the power push rod extends and pushes the locking pin to lock. That is, when a phase error occurs in the power supply, a reverse rotation command is sent to the drive unit through the logic control module to keep the motor of the power push rod rotating forward to complete the locking.
[0043] In other cases, it is considered that there is a power supply fault in the turnout system, and the logic control module throws a fault signal. If no fault occurs in the above steps, the normal locking operation starts.
[0044] Meanwhile, when the displacement detected by the displacement detection device compared by the logic control module ≥ S2, and the locking pin position status signal is the locking status signal, it proves that the locking is in place at this time. The logic control module issues a stop command to the drive unit, and the drive unit controls the power push rod to stop the locking action.
[0045] Meanwhile, during the turnout locking operation, the logic control module will first send a higher control speed value to the drive unit, and at the same time, it will receive the motor torque value of the power push rod feedback from the drive unit in real time. When the real-time received motor torque value appears larger than the normal data, the logic control module sends a lower control speed value to the drive unit, so as to adjust the extension action speed of the power push rod in real time during the locking process, and finally control the locking action speed of the locking pin, reduce the collision impact during the locking of the locking pin, and improve the operation stability of the turnout system.
[0046] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present utility model.
Claims
1. A suspension single-track turnout locking pin control system, characterized in that Comprising: A power push rod, an electrical parameter detection device, a displacement detection device, a locking pin position detection device, a logic control module, and a drive unit; wherein, The power push rod is installed on the switch beam and connected to the locking pin. By the extension and contraction of the power push rod, the locking pin is driven to lock or unlock the switch beam and the track beam; The electrical parameter detection device is connected to the incoming line power supply of the switch control system, and is used to detect the electrical parameters of the switch control system power supply, and send the obtained electrical parameter signals to the logic control module; The displacement detection device is installed on the power push rod, and is used to detect the movement displacement of the power push rod, and send the obtained displacement signals to the logic control module; The locking pin position detection device is installed on the track beam, and is used to detect the position state of the locking pin, and send the obtained locking pin position state signals to the logic control module; The logic control module is used to receive, record, process, and judge the electrical parameter signals, the displacement signals, and the locking pin position state signals, and generate control signals to send to the drive unit; The drive unit is used to receive the control signals and control the motion state of the power push rod according to the control signals.
2. The hanging single-track turnout lock pin control system according to claim 1, characterized in that, The electrical parameters include phase sequence, phase voltage, and voltage distortion rate.
3. The hanging single-rail switch locking pin control system according to claim 1, characterized in that, The displacement detection device is any one of an encoder, a potentiometer, and a wire-drawing type displacement sensor.
4. The hanging single-rail switch lock pin control system according to claim 1, characterized in that The locking pin position detection device is a position switch.