New energy wire trailer and working method

Abstract

The application discloses a new energy conductor trailer and a working method thereof, and relates to the field of tension stringing construction of power transmission line projects.The conductor trailer comprises a conductor trailer support, a conductor reel, a hysteresis brake, a gearbox, a synchronous motor, an energy management system and a control unit, the conductor reel is detachably connected with the support through a rotating linkage arm, the synchronous motor, the gearbox and the hysteresis brake are sequentially driven, the energy management system comprises an energy storage battery and an energy consumption resistance box, and the conductor trailer is also provided with a remote controller and a body control panel.The working method comprises four states of standby, pay-off, take-up and shutdown, the motor is blocked to keep tension in the standby state, the motor generates power to store energy or consumes energy in the pay-off state, energy storage power supply is used to prevent slack in the take-up state, and the whole system is powered off in the shutdown state, the tension is kept stable by dynamically adjusting torque in the pay-off state, and motor power is monitored to prevent overload throughout the whole process.The application replaces the traditional hydraulic pressure or brake disc structure, realizes energy recycling, improves tension stability and operation flexibility, and meets environmental protection requirements.

Description

Technical Field

[0001] This invention relates to the field of tension stringing construction technology for power transmission line engineering, and in particular to a new energy conductor tail car and its working method. Background Technology

[0002] In the tension stringing process of power transmission line projects, the tensioning machine, as a key piece of equipment, must be paired with a conductor tail carriage to control the tension at the tail of the conductor or wire rope. Traditional conductor tail carriages mainly use a brake disc structure or a hydraulic motor structure to provide resistance.

[0003] Among them, the brake disc type conductor tail car relies on friction plates to generate resistance. Because the coefficient of friction is easily affected by factors such as temperature and wear, tension fluctuations are significant, severely impacting the stability of tensioning and construction safety. While the hydraulic motor type conductor tail car can provide relatively stable tension, it relies on a tensioning machine for hydraulic power. This not only increases the energy consumption of the tensioning machine but also requires frequent insertion and removal of hydraulic hoses, easily introducing impurities and contaminating the hydraulic system. Furthermore, there is a risk of hydraulic oil leakage, causing environmental pollution.

[0004] With the increasing national requirements for energy conservation and environmental protection in construction equipment, the shortcomings of existing conductor rail cars in terms of energy consumption control and environmental protection have become increasingly apparent. Therefore, there is an urgent need for an energy-saving and environmentally friendly conductor rail car that can provide its own power, maintain stable tension control, and does not require external hydraulic power. Summary of the Invention

[0005] The technical problem to be solved and the technical task proposed by this invention is to improve and refine existing technical solutions, and to provide a new energy conductor tail car and its working method, with the aim of achieving stable tension control, energy recycling, and green and environmentally friendly construction. To this end, this invention adopts the following technical solution.

[0006] A new energy conductor tail carriage includes a conductor tail carriage bracket, a conductor reel, a rotating linkage arm, a reel pin, a hysteresis brake, a gearbox, a synchronous motor, and an energy management system. The conductor reel is detachably mounted on the conductor tail carriage bracket via the rotating linkage arm and the reel pin. The synchronous motor, gearbox, and hysteresis brake are sequentially connected to the conductor reel. The energy management system is electrically connected to the synchronous motor and includes an energy storage battery and an energy-consuming resistor box for storing, distributing, and consuming the electrical energy generated by the synchronous motor. By incorporating a hysteresis brake, gearbox, synchronous motor, and energy management system, the traditional hydraulic motor or brake disc structure is replaced, solving the tension fluctuation problem caused by the unstable resistance of traditional brake discs. This overcomes the shortcomings of hydraulic systems, such as reliance on additional power and easy leakage of hydraulic oil polluting the environment, effectively improving environmental protection. Utilizing the bidirectional working characteristics of the synchronous motor, the kinetic energy and gravitational potential energy of the conductor are converted into electrical energy and recycled during wire laying. The synchronous motor and energy management system work together to realize the generation, storage, and consumption of electrical energy, achieving energy-saving effects while providing a more stable and controllable tension foundation.

[0007] As a preferred technical means, the system also includes a control unit, which is electrically connected to the energy management system, the motor drive control unit of the synchronous motor, and the brake drive control unit of the hysteresis brake. The control unit enables centralized control of the energy management system, the synchronous motor, and the hysteresis brake, improving the accuracy and response speed of the tail car's operating state switching, ensuring coordinated operation of all components, and enhancing the system's automation and reliability.

[0008] As a preferred technical means, the system also includes a remote controller for the conductor tail car and a control panel located on the conductor tail car body. The remote controller is connected to the control unit via a wired / wireless communication module, and the control panel on the conductor tail car body is electrically connected to the control unit. The front of the remote controller's housing is equipped with a display screen, parameter setting buttons, and operation control buttons. Through the remote controller and the control panel on the conductor tail car body, operators can operate the conductor tail car both on the conductor tail car body and via the remote controller. This allows for convenient simultaneous operation from the tensioning machine side, enabling control of the conductor tail car from a safer location with better visibility, such as the tensioning machine operating platform. This improves operational convenience and construction safety. The display screen, parameter setting buttons, and operation control buttons on the remote controller facilitate real-time status monitoring, personalized parameter settings, and quick operation execution, enhancing operational convenience. The control panel on the conductor tail car body is also more convenient for equipment maintenance.

[0009] As a preferred technical approach, the remote control for the conductor tail carriage has a magnetic module inside the back of its casing. This magnetic module allows the remote control to be easily attached to metal surfaces such as the edge of the tension machine's control panel, preventing loss or interference with construction operations due to careless placement, thus improving the convenience and safety of equipment use.

[0010] As a preferred technical approach, the front of the remote control unit for the tail vehicle has two indicator lights. One light indicates the currently active control command input source, and the other indicates the system fault status. These two indicator lights, representing the control command input source and the system fault status respectively, allow operators to quickly identify the current control mode and the presence of faults from a distance, enabling timely problem detection and resolution, reducing troubleshooting time, and ensuring construction safety.

[0011] A method for operating a new energy conductor tail car includes the following steps:

[0012] 1) Start the conductor tail car; 2) The system performs a self-test, establishes a communication link, and completes initialization. It then enters a parking state where it waits to receive work instructions. If the system is accidentally turned on or does not require immediate operation, it will shut down directly. 3) The operator sends the working mode command to the tensioner side via the remote control of the wire tail car; 4) The control unit receives the operating mode instructions from the remote control or control panel; 5) The control unit controls the conductor tail car to execute the corresponding working mode according to the instructions. After initialization, this method defaults to the parking state, retains the "direct stop" option, meets the standby requirements before normal construction, and can quickly handle scenarios such as accidental start-up or plan adjustment; the operator does not need to travel back and forth between the conductor tail car and the tensioning machine, and completes the coordinated control of the two simultaneously, reducing operational redundancy, improving construction efficiency, pre-configuring various working modes, and automatically executing them, thereby improving the equipment's automatic control capability to adapt to conductor tension.

[0013] As a preferred technical means: In step 5), the working modes include the following four: 501) Standby mode: The control unit controls the energy management system to supply power to the synchronous motor and the hysteresis brake, and drives the motor drive control unit to stall the synchronous motor and open the hysteresis brake to maintain the tension at the end of the conductor. 502) Discharge mode: The control unit controls the hysteresis brake to open through the brake drive control unit, and controls the synchronous motor to run in the power generation mode through the motor drive control unit, so as to deliver electrical energy to the energy management system. The energy management system manages the energy storage battery and the energy consumption resistor box according to the energy storage battery power. 503) Reeling mode: The control unit controls the hysteresis brake to open through the brake drive control unit, and controls the energy management system to supply power to the synchronous motor from the energy storage battery, so that it operates in motor mode to maintain the tension at the end of the conductor to prevent the conductor from slack. 504) Shutdown mode: After the tail car of the conductor stops running, the control unit controls the energy management system to cut off the power to the hysteresis brake and synchronous motor.

[0014] Four working modes and corresponding control logics are clearly defined, enabling the conductor tail car to operate stably under four different working conditions: standby, wire release, wire reeling, and shutdown. In standby mode, conductor tension is maintained; during wire release, energy recovery and management are achieved; during wire reeling, stored electrical energy is used to prevent conductor slack; and during shutdown, power is safely cut off. This ensures the safety and quality of tensioned wire laying, and also realizes energy self-circulation and high-efficiency utilization, thus improving the overall energy efficiency, stability, and safety of the equipment.

[0015] As a preferred technical approach: In the 502) pay-off mode, the tension control process is executed as follows: In wire feeding mode, the tension control procedure is executed as follows: 50201) The control unit controls the hysteresis brake to open and controls the synchronous motor to use the preset operating torque as the stall torque. When the synchronous motor is sensed to be rotating, the output torque of the synchronous motor is gradually increased until the preset operating torque is reached. 50202) Monitor the speed of the synchronous motor. When the speed is detected to be lower than the set low speed threshold and the duration exceeds the set continuous threshold, increase the output torque and execute step 50205); otherwise, gradually restore the torque to the preset torque and execute the next step. 50203) Monitor the speed of the synchronous motor. When a sudden change in speed is detected and the acceleration or deceleration exceeds the set first acceleration or deceleration threshold, gradually increase the output torque of the synchronous motor until the speed stabilizes; otherwise, continue monitoring. 50204) Monitor the speed of the synchronous motor. When the speed stabilizes, determine whether the acceleration or deceleration is less than the second acceleration or deceleration threshold. If so, reduce the output torque of the synchronous motor to the preset torque. If not, continue to increase the output torque, where the second acceleration or deceleration threshold is less than the first acceleration or deceleration threshold. 50205) After the conductor coil stops, gradually reduce the output torque to half of the synchronous motor's rated torque to keep the synchronous motor stalled.

[0016] By dynamically adjusting the torque by sensing changes in motor speed during the wire laying process, it can effectively cope with speed fluctuations that may occur during the laying process, significantly suppress sudden changes in tension, and ensure smooth and stable tension. This avoids problems such as wire wear and slotting, and prevents the safety of wire laying from being affected by sudden changes in tension, greatly improving the accuracy and reliability of control.

[0017] As a preferred technical means: In step 50201), the stall torque is defaulted to the operating torque before the previous shutdown; if the operating torque is manually adjusted via remote control or control panel, the manually adjusted value is remembered. The stall torque is remembered by default from the previous shutdown value and supports manual modification, allowing the conductor tail car to quickly return to a reasonable tension state upon startup, reducing repetitive manual settings and improving operational efficiency; the manual adjustment function allows the stall torque value to be overridden according to the actual site conditions, meeting tension requirements under special working conditions, enhancing the adaptability of the equipment, and better meeting actual engineering needs.

[0018] As a preferred technical approach: During the start-up and operation of the conductor tail car, the control unit monitors and acquires the torque and speed of the synchronous motor in real time. When the calculated real-time power exceeds the rated power and the duration exceeds the preset tolerance time, an alarm is triggered, and the torque output of the synchronous motor is reduced to within the rated power. An intelligent overload protection mechanism based on both power and time criteria is established. This mechanism can tolerate brief acceleration and deceleration conditions to ensure construction continuity, while also preventing damage to the motor and electrical system due to prolonged overload, extending equipment life, improving system safety, and ensuring construction continuity and efficiency.

[0019] Beneficial effects: 1. By setting up a hysteresis brake, gearbox, synchronous motor and energy management system to replace the traditional hydraulic motor or brake disc structure, the traditional hydraulic system and hydraulic pipe plugging and unplugging operation are eliminated, fundamentally avoiding problems such as hydraulic oil leakage pollution and foreign matter intrusion into the system, and effectively improving environmental protection.

[0020] 2. Utilizing the bidirectional working characteristics of the synchronous motor, the synchronous motor switches to power generation mode during wire laying, converting gravitational potential energy into electrical energy. The electrical energy is stored in the energy storage battery through the energy management system, and excess electrical energy is rationally consumed by the energy-consuming resistor box. During wire reeling and standby, the energy storage battery is used directly for power supply, eliminating the need to rely on the tension machine for additional power, thus significantly reducing energy consumption and achieving energy-saving effects.

[0021] 3. Hysteresis brake, gearbox, synchronous motor and energy management system replace the traditional hydraulic motor or brake disc structure, avoiding the problems of brake disc friction resistance fluctuation and hydraulic system power transmission delay; in the wire laying state, the dynamic torque adjustment strategy achieves smooth tension output and ensures wire laying safety.

[0022] 4. By monitoring the motor torque and speed in real time and calculating the power, when the overload continues for more than a preset time, an alarm is automatically triggered and the torque is reduced to a safe range to avoid damage to the motor and electrical system. This is superior to the passive protection of traditional hydraulic systems and realizes intelligent overload protection.

[0023] 5. Supports command input from interactive devices such as remote control and the main panel of the guide car, allowing operators to select the optimal control method according to the construction scenario. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the new energy lead car tail vehicle of the present invention.

[0025] Figure 2 This is a front view of the remote control for the tail vehicle of the present invention.

[0026] Figure 3 This is a schematic diagram of the working process of the new energy lead-ahead vehicle of the present invention.

[0027] Figure 4 This is a flowchart of the tension control process in the new energy conductor tail car release mode of the present invention.

[0028] Figure 5 This is a schematic diagram of the alarm process based on working status monitoring of the present invention.

[0029] In the diagram: 1. Conductor tail car bracket; 2. Conductor reel; 3. Rotary linkage arm; 4. Reel pin; 5. Hysteresis brake; 6. Gearbox; 7. Synchronous motor; 8. Energy management system; 9. Conductor tail car remote control; 901. Signal indicator light; 902. Display screen; 903. Parameter setting button; 904. Operation control button. Detailed Implementation

[0030] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1 like Figure 1As shown, a new energy conductor tail car includes a conductor tail car bracket 1, a conductor reel 2, a rotating linkage arm 3, a reel pin 4, a hysteresis brake 5, a gearbox 6, a synchronous motor 7, and an energy management system 8. The conductor reel 2 is detachably mounted on the conductor tail car bracket 1 via the rotating linkage arm 3 and the reel pin 4, enabling linkage and separation with the conductor tail car bracket 1. The synchronous motor 7, gearbox 6, and hysteresis brake 5 are sequentially connected to the conductor reel 2. By replacing the traditional hydraulic motor or brake disc structure with the hysteresis brake 5, gearbox 6, and synchronous motor 7, the problem of tension fluctuation caused by the unstable resistance of the traditional brake disc is solved, as well as the defects of the hydraulic system that rely on additional power and are prone to hydraulic oil leakage and environmental pollution are addressed. The energy management system 8 is electrically connected to the synchronous motor 7. The energy management system 8 includes an energy storage battery and an energy-consuming resistor box. Utilizing the bidirectional working characteristics of the synchronous motor 7, the gravitational potential energy is converted into electrical energy during wire laying and recovered for storage and utilization. The energy-consuming resistor box consumes excess electrical energy that the energy storage battery cannot hold.

[0032] To achieve centralized control of the energy management system 8, synchronous motor 7, and hysteresis brake 5, the tail car also includes a control unit. This control unit is electrically connected to the motor drive control unit of the energy management system 8 and synchronous motor 7, and the brake drive control unit of the hysteresis brake 5. The inclusion of the control unit enables centralized control of the energy management system 8, synchronous motor 7, and hysteresis brake 5, improving the accuracy and response speed of the tail car's operating state switching, ensuring coordinated operation of all components, enhancing the system's automation level and reliability, and optimizing the overall stability and reliability of the system.

[0033] To improve operational convenience and ease of maintenance, the system also includes a remote control 9 for the tail carriage and a control panel located on the tail carriage itself. The remote control 9 is connected to the control unit via a wired / wireless communication module, and the control panel on the tail carriage is electrically connected to the control unit. Figure 2As shown, the front of the casing of the conductor tail car remote controller 9 has an LCD screen 902. Below the screen 902 are four parameter setting buttons 903, and below the parameter setting buttons 903 are five operation control buttons 904. The parameter setting buttons 903 are used to set the personalized parameters of the conductor tail car, including the wireless remote control frequency band, tension range value, and minimum standby torque. The five operation control buttons 904 can realize the synchronous operation of the remote controller to adjust the tension of the conductor tail car, including mode switching, tension adjustment, and forward and reverse control. The display is used to view the detailed status of the device, including the tension value of the tension mode. With the remote control 9 for the conductor tail car and the control panel located on the conductor tail car body, operators can operate the conductor tail car body or via the remote control 9. This allows for convenient simultaneous operation from the tensioning machine side. Controlling the conductor tail car from a safer location with better visibility, such as the tensioning machine operating platform, via the remote control 9 improves operational convenience and construction safety. The display screen 902, parameter setting buttons 903, and operation control buttons 904 on the remote control facilitate real-time status viewing, personalized parameter settings, and quick operation execution, enhancing operational convenience. The control panel on the conductor tail car body is also more convenient to operate during equipment maintenance.

[0034] To facilitate easy fixation, the back of the remote control for the wire guide tail car 9 is equipped with a magnetic module. This module allows the remote control to be attached to metal surfaces such as the edge of the tension machine's control panel, enabling synchronized operation with the tension machine. This secure fixation prevents the remote control from being lost or interfering with operation, improving both the convenience and safety of the equipment.

[0035] To facilitate operators in quickly identifying the current control mode of the equipment and whether there are any faults from a distance, such as Figure 2 As shown, the upper left side of the display screen 902 on the front of the housing of the remote controller 9 for the tail carriage has two indicator lights 901. One light indicates the currently active control command input source through different light signals, and the other indicates the system fault status through different light signals. The two indicator lights 901 indicate the control command input source and the system fault status respectively, which facilitates operators to quickly identify the current control mode of the equipment and whether there is a fault from a distance, so as to discover and deal with problems in a timely manner, reduce troubleshooting time, and ensure construction safety.

[0036] like Figure 3 As shown, the working process of the conductor tail car during operation follows these steps: S1: Start the tail carriage of the conductor train; S2: System self-test, communication link established, energy management system 8 ready, initialization completed, enters parking standby state waiting to receive work instructions; if the system is accidentally turned on, or if there is no need to immediately lay or retract the wire, the conductor tail car can be stopped directly. S3: Under normal operating conditions, in order to ensure safety and coordinate with the tension machine, the operator sends the working mode command to the tension machine side through the remote controller 9 of the wire tail car; in addition, under the premise of ensuring safety, the command control operation can also be performed on the control panel of the wire tail car body. Especially during maintenance, the operation on the control panel of the wire tail car body is more convenient and intuitive. S4: The control unit receives the operating mode command from the remote control; S5: The control unit controls the tail car to perform various working modes according to the instructions.

[0037] Step S5 includes four working modes: S501: Standby mode: The control unit controls the energy management system 8 to supply power to the hysteresis brake 5, controls the hysteresis brake 5 to open through the brake drive control unit, controls the energy management system 8 to supply power to the synchronous motor 7, and causes the synchronous motor 7 to stall through the motor drive control unit to maintain the tension at the end of the conductor. S502: Line release mode: The control unit controls the energy management system 8 to supply power to the hysteresis brake 5, controls the hysteresis brake 5 to open through the brake drive control unit, and controls the synchronous motor 7 to run in the power generation mode through the motor drive control unit, so as to deliver electrical energy to the energy management system 8. The energy management system 8 manages the energy storage battery and the energy dissipation resistor box according to the stored power of the energy storage battery. For excess power, it is consumed through the energy dissipation resistor box. S503: Reel-in mode: The control unit controls the energy management system 8 to supply power to the hysteresis brake 5, controls the hysteresis brake 5 to open through the brake drive control unit, and controls the energy management system 8 to supply power to the synchronous motor 7 from the energy storage battery, so that it operates in motor mode, maintaining the tension at the end of the conductor to prevent the conductor from slack. S504: Stop mode: After the tail car of the conductor stops running, the control unit controls the energy management system 8 to cut off the power to the hysteresis brake 5 and the synchronous motor 7.

[0038] Four working modes and corresponding control logics are clearly defined, enabling the conductor tail car to operate stably under four different working conditions: standby, wire release, wire reeling, and shutdown. In standby mode, conductor tension is maintained; during wire release, energy recovery and management are achieved; during wire reeling, stored electrical energy is used to prevent conductor slack; and during shutdown, power is safely cut off. This ensures the safety and quality of tensioned wire laying, and also realizes energy self-circulation and high-efficiency utilization, thus improving the overall energy efficiency, stability, and safety of the equipment.

[0039] like Figure 4 As shown, in S502 wire feeding mode, the tension control procedure is executed as follows: S50201: The control unit controls the hysteresis brake 5 to open and controls the synchronous motor 7 to use the preset operating torque as the stall torque. The stall torque is the operating torque before the last stop, which is memorized. When the synchronous motor 7 is sensed to be rotating, the output torque of the synchronous motor 7 is gradually increased until it reaches the operating torque before the last stop. In addition, when the operating torque is manually modified or adjusted via remote control or panel, the manual adjustment value is memorized. In this embodiment, the stall torque is generally set to 50% of the rated torque. S50202: Monitor the speed of synchronous motor 7. When the speed is detected to be slowing down, appropriately increase the output torque of synchronous motor 7. In this embodiment, when it is detected that the speed of synchronous motor 7 is less than the low speed threshold of 50 rpm and lasts for more than 10 minutes, the output torque is increased by 1.1 times, and then step S50205 is executed. If not, the torque is gradually restored to the preset torque, and the next step is executed. S50203: Monitor the speed of synchronous motor 7. When a sudden increase or decrease in the speed of synchronous motor 7 is detected, gradually increase the output torque of synchronous motor 7 until the speed stabilizes. In this embodiment, if the acceleration or deceleration of synchronous motor 7 is greater than the first acceleration or deceleration threshold of 1000 rpm, gradually increase the output torque to 1.2 times the preset operating torque to stabilize the speed, and then proceed to the next step. Otherwise, continue monitoring. S50204: Monitor the speed of synchronous motor 7. When the speed is stable, reduce the output torque of synchronous motor 7. In this embodiment, determine whether the synchronous motor accelerates or decelerates less than the second acceleration / deceleration threshold of 500 rpm. If so, reduce the output torque of synchronous motor 7 to restore the preset torque. If not, it indicates that the acceleration / deceleration is still unstable, and the output torque still needs to be increased. S50205: After the wire reel 2 stops, gradually reduce the output torque to half of the rated torque of the synchronous motor 7, keeping the synchronous motor 7 continuously stalled. During the wire feeding process, the tension control procedure senses changes in motor speed and dynamically adjusts the torque, effectively addressing potential speed fluctuations during feeding, significantly suppressing sudden changes in tension, ensuring smooth and stable tension, thus avoiding wire wear, skipping, and other problems. It also prevents sudden tension changes from affecting feeding safety, greatly improving the accuracy and reliability of the control.

[0040] Example 2 Unlike the above embodiment, as Figure 5 As shown, based on Embodiment 1, the tail car of the conductor is equipped with an alarm mechanism based on working status monitoring, and the method is as follows: L1: During the start-up and operation of the conductor tail car, the control unit monitors the conductor tail car in real time and obtains the torque and speed of the synchronous motor 7 in real time; L2: Determine whether the calculated real-time power exceeds the rated power. If yes, proceed to the next step; otherwise, continue monitoring. L3: Records the duration during which the real-time power is lower than the rated power; L4: Determine if the duration exceeds the preset tolerance time. If yes, proceed to the next step; otherwise, return to step L3 and continue recording the time. L5: Alarm triggered, the fault indicator light 901 on the remote control 9 of the tail vehicle flashes and displays the alarm code; L6: The control unit controls the output torque of the synchronous motor 7 to reduce it to within the rated power, thus eliminating the alarm. An intelligent overload protection mechanism based on power and time dual criteria has been established. This mechanism can tolerate brief acceleration and deceleration conditions to ensure construction continuity, while also preventing damage to the motor and electrical system due to prolonged overload. This extends equipment life, improves system safety, and ensures construction continuity and efficiency.

[0041] The above are specific embodiments of the present invention, which demonstrate the outstanding substantive features and significant progress of the present invention. Based on the actual needs of use, equivalent modifications in shape, structure, etc., can be made to it according to the teachings of the present invention, and all such modifications are within the scope of protection of this solution.

Claims

1. A new energy conductor tail vehicle, characterized in that: The system includes a conductor tail carriage bracket, a conductor reel, a rotating linkage arm, a reel pin, a hysteresis brake, a gearbox, a synchronous motor, and an energy management system. The conductor reel is detachably mounted on the conductor tail carriage bracket via the rotating linkage arm and the reel pin. The synchronous motor, gearbox, and hysteresis brake are sequentially connected to the conductor reel. The energy management system is electrically connected to the synchronous motor and the hysteresis brake. The energy management system includes an energy storage battery and an energy-consuming resistor box for storing, distributing, and consuming the electrical energy generated by the synchronous motor.

2. The new energy lead-ahead vehicle according to claim 1, characterized in that: It also includes a control unit, which is electrically connected to the energy management system, the motor drive control unit of the synchronous motor, and the brake drive control unit of the hysteresis brake.

3. A new energy lead-line vehicle according to claim 2, characterized in that: It also includes a remote control for the tail train and a control panel located on the tail train body. The remote control for the tail train is connected to the control unit via a wired / wireless communication module, and the control panel of the tail train body is electrically connected to the control unit. The front of the housing of the remote control for the tail train is provided with a display screen, parameter setting buttons and operation control buttons.

4. A new energy conductor tail vehicle according to claim 3, characterized in that: The remote control for the tail vehicle has a magnetic module inside the back of its casing.

5. A new energy conductor tail vehicle according to claim 4, characterized in that: The remote control for the tail vehicle has two indicator lights on the front of its housing. One light is used to indicate the currently active control command input source, and the other light is used to indicate the system fault status.

6. The working method of a new energy conductor tail car according to any one of claims 2-5, characterized in that... Includes the following steps: 1) Start the conductor tail car; 2) The system performs a self-test, establishes a communication link, and completes initialization. It then enters a parking state where it waits to receive work instructions. If the system is accidentally turned on or does not require immediate operation, it will shut down directly. 3) The operator sends the working mode command to the tensioner side via the remote control of the wire tail car; 4) The control unit receives the operating mode instructions from the remote control or control panel; 5) The control unit controls the tail car to execute the corresponding working mode according to the instructions.

7. The working method of a new energy conductor tail car according to claim 6, characterized in that: In step 5), the working modes include the following four: 501) Standby mode: The control unit controls the energy management system to supply power to the synchronous motor and the hysteresis brake, and drives the control unit to stall the synchronous motor and open the hysteresis brake to maintain the tension at the end of the conductor. 502) Discharge mode: The control unit controls the hysteresis brake to open through the brake drive control unit, and controls the synchronous motor to run in the power generation mode through the motor drive control unit, so as to deliver electrical energy to the energy management system. The energy management system manages the energy storage battery and the energy consumption resistor box according to the energy storage battery power. 503) Reeling mode: The control unit controls the hysteresis brake to open through the brake drive control unit, and controls the energy management system to supply power to the synchronous motor from the energy storage battery, so that it operates in motor mode to maintain the tension at the end of the conductor to prevent the conductor from slack. 504) Shutdown mode: After the tail car of the conductor stops running, the control unit controls the energy management system to cut off the power to the hysteresis brake and synchronous motor.

8. The working method of a new energy conductor tail car according to claim 7, characterized in that: In wire feeding mode, the tension control procedure is executed as follows: 50201) The control unit controls the hysteresis brake to open and controls the synchronous motor to use the preset operating torque as the stall torque. When the synchronous motor is sensed to be rotating, the output torque of the synchronous motor is gradually increased until the preset operating torque is reached. 50202) Monitor the speed of the synchronous motor. When the speed is detected to be lower than the set low speed threshold and the duration exceeds the set continuous threshold, increase the output torque and execute step 50205); otherwise, gradually restore the torque to the preset torque and execute the next step. 50203) Monitor the speed of the synchronous motor. When a sudden change in speed is detected and the acceleration or deceleration exceeds the set first acceleration or deceleration threshold, gradually increase the output torque of the synchronous motor until the speed stabilizes; otherwise, continue monitoring. 50204) Monitor the speed of the synchronous motor. When the speed stabilizes, determine whether the acceleration or deceleration is less than the second acceleration or deceleration threshold. If so, reduce the output torque of the synchronous motor to the preset torque. If not, continue to increase the output torque, where the second acceleration or deceleration threshold is less than the first acceleration or deceleration threshold. 50205) After the conductor coil stops, gradually reduce the output torque to half of the synchronous motor's rated torque to keep the synchronous motor stalled.

9. The working method of a new energy conductor tail car according to claim 8, characterized in that: In step 50201), the stall torque is defaulted to the operating torque before the previous shutdown; if the operating torque is manually adjusted via remote control or control panel, the manually adjusted value is memorized.

10. The working method of a new energy conductor tail car according to claim 8, characterized in that: During the start-up and operation of the tail car of the conductor, the control unit monitors and obtains the torque and speed of the synchronous motor in real time. When the calculated real-time power exceeds the rated power and the duration exceeds the preset tolerance time, an alarm is triggered and the torque output of the synchronous motor is reduced to within the rated power.

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