Ground charging system for new energy shunting locomotive

Abstract

The application discloses a ground charging system for a new energy shunting locomotive and relates to the technical field of new energy shunting locomotives.The technical points of the ground charging system include a charging pile body, charging cables symmetrically and fixedly installed on the side of the charging pile body, and a hollow wire supporting rod.The end of the charging cable away from the charging pile body is fixedly installed with a charging gun head.The outer side of the charging pile body is provided with a wire supporting structure.The hollow wire supporting rod wire supporting structure includes two hollow wire supporting rods rotatably connected to the two sides of the charging pile body.The wire supporting structure is arranged to realize the winding and unwinding of the charging cable, avoid the direct dragging of the cable on the ground, reduce the friction with the ballast, effectively prevent the abrasion of the outer sheath of the cable, form a two-way airflow by using the air pump, the air guide cavity, the ring cylinder and the gun head cooling channel and other airway structures, take away the heat of the cable and the gun head, blow off the surface dust, guarantee the charging efficiency, delay the aging of the insulation layer, and improve the safety and the service life of the equipment.

Description

Technical Field

[0001] This invention relates to the field of new energy shunting locomotive technology, specifically to a ground charging system for new energy shunting locomotives. Background Technology

[0002] New energy shunting locomotives are a new type of shunting equipment developed in the railway transportation sector in response to national environmental protection policies and sustainable development strategies. They are mainly used for vehicle marshalling, dismantling, shunting, and short-distance traction operations within railway stations. Compared with traditional diesel shunting locomotives, new energy locomotives use electricity or other clean energy sources as their primary power source, possessing significant advantages such as zero emissions, low noise, high energy efficiency, and low operating costs. They have become an important technological path for promoting the green and low-carbon transformation of the railway industry. As a key infrastructure supporting the operation of new energy shunting locomotives, the ground charging system is responsible for providing them with daily power replenishment. In actual operation, the shunting locomotive is first moved to the vicinity of a charging pile. Then, charging personnel manually remove the charging gun from the charging pile, drag the heavy-duty charging cable to the side of the locomotive, and insert it into the charging interface on the locomotive body.

[0003] However, due to the presence of gravel ballast around railway tracks, the ground is uneven, making charging cables highly susceptible to friction with sharp stones during frequent dragging. This can lead to safety hazards such as wear on the cable sheath, cracking of the insulation layer, and damage to the internal wires. Such damage not only affects charging efficiency and equipment lifespan but may also cause operational risks such as leakage and short circuits. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a ground charging system for new energy shunting locomotives, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a ground charging system for new energy shunting locomotives, comprising a charging pile body and charging cables symmetrically and fixedly installed on the side of the charging pile body, wherein a charging gun head is fixedly installed at the end of the charging cable away from the charging pile body, and a cable support structure is provided on the outer side of the charging pile body.

[0006] The cable support structure includes two hollow cable support rods rotatably connected to both sides of the charging pile body. A hollow cable head fixing cylinder and a cable tail fixing cylinder are rotatably connected to the side of each hollow cable support rod via a rotating seat. The charging cable passes through the hollow cable head fixing cylinder and the cable tail fixing cylinder. A recessed seat is fixedly installed on the top of the charging pile body. A winding wheel is rotatably connected to the recessed seat. An air guide cavity is opened inside the winding wheel. A soft hollow tube communicating with the inner cavity of the air guide cavity is fixedly installed on the winding wheel. Several evenly distributed load-bearing rings are fixedly installed inside the soft hollow tube. A hollow connecting rod is fixedly installed at the end of the soft hollow tube away from the winding wheel, and the hollow connecting rod is fixedly connected to the hollow cable support rod. A servo motor is fixedly installed on the top of the charging pile body at one end of the winding wheel, and the output end of the servo motor is fixedly connected to the winding wheel.

[0007] Preferably, an auxiliary pulley is rotatably connected to the side of the top of the charging pile body, wherein the soft hollow tube is slidably connected to the auxiliary pulley; the rotating seat includes a cylindrical shell and a cylindrical disk with a connecting rod, the cylindrical shell is fixedly installed on the side of the hollow cable support rod, and the cylindrical disk with the connecting rod is rotatably connected to the cylindrical shell; a cross wire frame is fixedly installed on the inner wall of the hollow cable head fixing cylinder and the cable tail fixing cylinder, and the charging cable is fixedly installed in the hollow cable head fixing cylinder and the cable tail fixing cylinder through the cross wire frame.

[0008] Preferably, a baffle is fixedly installed in the inner cavity of the hollow wire support rod, a telescopic spring is fixedly installed on the baffle, a movable sealing plate is fixedly installed at the end of the telescopic spring away from the baffle, and a shaft is fixedly installed on the baffle, with the shaft and the movable sealing plate in a sliding sealing connection; the movable sealing plate, the baffle, and the hollow wire support rod form an air storage cavity, which communicates with the inner cavity of the hollow connecting rod; the movable sealing plate and the hollow wire support rod form an exhaust cavity, and a connecting air groove is formed on the shaft located in the exhaust cavity, the number of which is several.

[0009] Preferably, the hollow cable support rod has a movable groove on its side, and hollow linkage rods are fixedly installed at the four corners of the movable sealing plate. The hollow linkage rods are slidably and sealingly connected to the baffle. Several hollow slides communicating with the inner cavity of the hollow linkage rod are fixedly installed on the hollow linkage rods. An annular cylinder communicating with the inner cavity of the hollow slide is fixedly installed on the hollow slide. The inner diameter of the annular cylinder is larger than the diameter of the charging cable, and several air vents are opened on the inner circular surface of the annular cylinder.

[0010] Preferably, a rectangular groove is provided at the top of the hollow wire support rod, and a guide tube is fixedly installed on one of the hollow linkage rods below the rectangular groove. The end of the guide tube away from the hollow linkage rod is fixedly installed on the hollow wire support rod and communicates with the exhaust chamber.

[0011] Preferably, a cable limiting frame is fixedly installed on one end of the hollow cable support rod near the hollow cable head fixing cylinder, and the cable limiting frame is fixedly connected to the charging cable; the charging cable between the hollow cable head fixing cylinder and the cable limiting frame is bent for use by rotating the charging gun head.

[0012] Preferably, the hollow wire head fixing cylinder has a plurality of gun head cooling holes at one end near the charging gun head, wherein a gun head cooling channel is provided on the axis of the rotating seat on the hollow wire head fixing cylinder, and the gun head cooling channel connects the hollow wire head fixing cylinder and the exhaust chamber.

[0013] Preferably, the other end of the winding wheel is provided with an air pump fixedly installed on the top of the charging pile body. The air outlet end of the air pump is fixedly connected to the winding wheel through a rotary joint and communicates with the inner cavity of the air guide chamber.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting up a cable support structure, including a hollow cable support rod, a winding wheel and a servo motor, the charging cable can be automatically released and retrieved, avoiding the cable from dragging directly on the ground, reducing friction with gravel and ballast, effectively preventing wear on the cable sheath, cracking of the insulation layer and damage to the internal wire core, and improving safety and equipment life.

[0016] 2. By setting up air channels such as air pump, air guide chamber, ring cylinder, and gun head cooling channel, a two-way airflow is formed, which can quickly remove the heat from the charging cable and gun head, and blow away the dust on the surface of the cable, ensuring charging efficiency and delaying the aging of the insulation layer. Attached Figure Description

[0017] Figure 1 This is a complete structural schematic diagram of the present invention;

[0018] Figure 2 For the present invention Figure 1 Another perspective structural diagram;

[0019] Figure 3 This is a schematic diagram of the air guide cavity of the present invention;

[0020] Figure 4 This is a schematic diagram of the hollow wire support rod, the hollow wire head fixing cylinder, and the wire tail fixing cylinder of the present invention.

[0021] Figure 5 For the present invention Figure 4 A partially enlarged structural diagram;

[0022] Figure 6 For the present invention Figure 5 A partially enlarged structural diagram;

[0023] Figure 7This is a schematic diagram of the cross-sectional view of the gas storage chamber and the exhaust chamber of the present invention;

[0024] Figure 8 This is a schematic diagram of the soft hollow interior structure of the present invention.

[0025] In the picture:

[0026] 1. Charging pile body; 2. Charging cable; 3. Charging gun head; 4. Cable support structure; 41. Hollow cable support rod; 42. Recessed seat; 43. Winding wheel; 44. Air guide chamber; 45. Soft hollow tube; 46. Load-bearing ring; 47. Hollow connecting rod; 48. Servo motor; 49. Hollow cable head fixing cylinder; 410. Cable tail fixing cylinder; 5. Baffle; 6. Telescopic spring; 7. Shaft; 8. Air storage chamber; 9. Exhaust chamber; 10. Connecting air groove; 11. Movable groove; 12. Hollow linkage rod; 13. Hollow slide; 14. Ring cylinder; 15. Air outlet; 16. Rectangular groove; 17. Conductor tube; 18. Cable limiting frame; 19. Gun head cooling hole; 20. Gun head cooling channel; 21. Air pump; 22. Rotary joint; 23. Movable sealing plate. Detailed Implementation

[0027] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0028] This invention provides a technical solution:

[0029] Please see Figures 1 to 8 A ground charging system for new energy shunting locomotives includes a charging pile body 1 and charging cables 2 symmetrically fixedly installed on the side of the charging pile body 1. A charging gun head 3 is fixedly installed at the end of the charging cable 2 away from the charging pile body 1. A cable support structure 4 is provided on the outside of the charging pile body 1.

[0030] The cable support structure 4 includes two hollow cable support rods 41 rotatably connected to both sides of the charging pile body 1. Hollow cable support rods 41 are rotatably connected to a hollow cable head fixing cylinder 49 and a cable tail fixing cylinder 410 via a rotating seat. The charging cable 2 passes through the hollow cable head fixing cylinder 49 and the cable tail fixing cylinder 410. A recessed seat 42 is fixedly installed on the top of the charging pile body 1. A winding wheel 43 is rotatably connected to the recessed seat 42. An air guide cavity 44 is opened inside the winding wheel 43. A soft hollow tube 45 communicating with the inner cavity of the air guide chamber 44 is fixedly installed on the winding wheel 43. Several evenly distributed load-bearing rings 46 are fixedly installed in the inner cavity of the soft hollow tube 45. A hollow connecting rod 47 is fixedly installed at the end of the soft hollow tube 45 away from the winding wheel 43. The hollow connecting rod 47 is fixedly connected to the hollow wire support rod 41. A servo motor 48 is fixedly installed on the top of the charging pile body 1 at one end of the winding wheel 43. The output end of the servo motor 48 is fixedly connected to the winding wheel 43.

[0031] After the shunting locomotive stops at the designated position, the servo motor 48 starts and drives the winding wheel 43 mounted on the recess 42 to rotate, causing the soft hollow tube 45 on the winding wheel 43 to gradually extend. Under the weight of itself, the hollow connecting rod 47, and the charging cable 2, the hollow cable support rod 41 rotates downward around the connection point with the charging pile body 1. Then, through the hollow cable head fixing cylinder 49 and the cable tail fixing cylinder 410, the charging cable 2 passing through them is smoothly lowered, allowing the charging gun head 3 to move to the vicinity of the locomotive charging seat. After charging is completed, the servo motor 48 rotates in the opposite direction, the winding wheel 43 retracts and winds the soft hollow tube 45, and the hollow cable support rod 41 returns to its original position, completing the storage of the charging cable 2. Among them, the charging pile body 1 provides the installation support foundation for the entire system, the charging cable 2 undertakes the power transmission function, the charging gun head 3 realizes the charging docking with the shunting locomotive, and the cable support structure 4 The automatic winding and unwinding of the charging cable 2 is achieved through the cooperation of components such as the hollow cable support rod 41, the winding wheel 43, and the servo motor 48, avoiding direct dragging and contact with the ballast around the track, reducing the risk of outer sheath wear, insulation layer rupture, and internal wire core damage. The load-bearing ring 46 inside the soft hollow tube 45 can prevent deformation and blockage of the air passage when it winds. The hollow connecting rod 47 realizes a stable connection between the soft hollow tube 45 and the hollow cable support rod 41. The hollow cable head fixing cylinder 49 and the cable tail fixing cylinder 410 not only fix and limit the charging cable 2, but also avoid stress concentration caused by cable pulling through the adaptive rotation of the rotating seat. The recessed seat 42 provides stable installation and rotation support for the winding wheel 43, ultimately ensuring the safety of the charging process and extending the service life of the equipment. At the same time, the air guide cavity 44 inside the soft hollow tube 45 and the winding wheel 43 cooperates to build a channel for subsequent airflow transmission.

[0032] In some embodiments, an auxiliary pulley is rotatably connected to the side of the top of the charging pile body 1, wherein the soft hollow tube 45 is slidably connected to the auxiliary pulley; the rotating seat includes a cylindrical shell and a cylindrical disk with a connecting rod, the cylindrical shell is fixedly installed on the side of the hollow cable support rod 41, and the cylindrical disk with the connecting rod is rotatably connected to the cylindrical shell; a cross wire frame is fixedly installed on the inner wall of the hollow cable head fixing cylinder 49 and the cable tail fixing cylinder 410, and the charging cable 2 is fixedly installed in the hollow cable head fixing cylinder 49 and the cable tail fixing cylinder 410 through the cross wire frame.

[0033] In this embodiment, during the charging of the shunting locomotive, as the servo motor 48 drives the winding wheel 43 to wind and unwind the flexible hollow tube 45, the auxiliary pulley (installed on the top side of the charging pile body 1) which is slidably connected to the flexible hollow tube 45 rotates accordingly, reducing the frictional resistance when the flexible hollow tube 45 moves; when the charging cable 2 passes through the hollow wire head fixing cylinder 49 and the wire tail fixing cylinder 410, it is stably installed through the cross wire frame on the inner wall of the two fixing cylinders, and the hollow wire head fixing cylinder 49 and the wire tail fixing cylinder 410 are connected to the hollow wire support rod 41 through the rotating seat, and the cylindrical shell of the rotating seat is fixed. The cylindrical disk with connecting rod, fixed to the side of the hollow cable support rod 41, can rotate relative to the cylindrical shell and can adaptively adjust its angle according to the deformation of the charging cable 2. The auxiliary pulley reduces wear on the soft hollow tube 45 during retraction and ensures smooth movement. The rotating seat avoids stress concentration caused by the pulling of the charging cable 2 through the rotational cooperation between the cylindrical shell and the cylindrical disk. The cross wire frame further strengthens the fixing effect of the charging cable 2 in the hollow wire head fixing cylinder 49 and the wire tail fixing cylinder 410, preventing the cable from shifting or shaking. The three together improve the stability of the system operation and the service life of the components.

[0034] Please see Figure 6 and Figure 7 A baffle 5 is fixedly installed in the inner cavity of the hollow wire support rod 41. A telescopic spring 6 is fixedly installed on the baffle 5. A movable sealing plate 23 is fixedly installed at the end of the telescopic spring 6 away from the baffle 5. A shaft 7 is fixedly installed on the baffle 5. The shaft 7 is slidably and sealingly connected to the movable sealing plate 23. The movable sealing plate 23, the baffle 5 and the hollow wire support rod 41 form an air storage cavity 8. The air storage cavity 8 is connected to the inner cavity of the hollow connecting rod 47. The movable sealing plate 23 and the hollow wire support rod 41 form an exhaust cavity 9. A connecting air groove 10 is opened on the shaft 7 located in the exhaust cavity 9. The number of connecting air grooves 10 is several.

[0035] During charging, the gas delivered by the air pump 21 enters the gas storage chamber 8, which is formed by the movable sealing plate 23, the baffle 5, and the hollow wire support rod 41, via the hollow connecting rod 47. As the gas is continuously injected, the gas pressure in the gas storage chamber 8 increases, pushing the movable sealing plate 23 to slide away from the baffle 5 along the shaft 7 on the baffle 5 (the shaft 7 ensures its sliding sealing effect). At the same time, the extension spring 6 on the baffle 5 is stretched. When the movable sealing plate 23 moves to the designated position, several connecting air grooves 10 on the shaft 7 connect the gas storage chamber 8 with the exhaust chamber 9 formed by the movable sealing plate 23 and the hollow wire support rod 41. The gas flows into the exhaust chamber 9 quickly, and then the gas pressure in the gas storage chamber 8 decreases. When the spring 6 is lowered, the movable sealing plate 23 slides back to its original position under the action of elastic restoring force, resealing the connecting air groove 10, and so on. The baffle 5 provides the mounting base for the spring 6 and the shaft 7 and separates the air storage chamber 8 and the exhaust chamber 9. The shaft 7 ensures that the movable sealing plate 23 slides stably and has a good seal. The spring 6 provides the reset power for the movable sealing plate 23. The movable sealing plate 23, together with the air storage chamber 8 and the exhaust chamber 9, realizes the switching of gas storage and release. The connecting air groove 10 controls the opening and closing of the two chambers, jointly building a stable airflow circulation mechanism, providing continuous power for the heat dissipation and dust removal of the subsequent charging cable 2 and charging gun head 3.

[0036] Please see Figures 5-7 The hollow cable support rod 41 has a movable groove 11 on its side. A hollow linkage rod 12 is fixedly installed at the four corners of the movable sealing plate 23. The hollow linkage rod 12 is slidably and sealingly connected to the baffle 5. Several hollow slides 13 are fixedly installed on the hollow linkage rod 12 and communicate with the inner cavity of the hollow linkage rod 12. An annular cylinder 14 is fixedly installed on the hollow slide 13 and communicates with the inner cavity of the hollow slide 13. The inner diameter of the annular cylinder 14 is larger than the diameter of the charging cable 2. Several air vents 15 are opened on the inner circular surface of the annular cylinder 14.

[0037] During charging, the movable sealing plate 23 slides back and forth along the shaft 7, causing the hollow linkage rods 12 fixed at its four corners to move synchronously. The movable groove 11 on the side of the hollow cable support rod 41 provides sufficient space for the movement of the hollow linkage rod 12, and the hollow linkage rod 12 and the baffle 5 maintain a sliding seal. Some of the gas in the exhaust chamber 9 enters the hollow linkage rod 12 through the guide pipe 17, and is then transported to the ring cylinder 14 (the inner diameter of the ring cylinder 14 is larger than the diameter of the charging cable 2, and can be stably sleeved on the outside of the charging cable 2) through several hollow slides 13 connected to the inner cavity of the hollow linkage rod 12. Finally, the gas exits from inside the ring cylinder 14. Several air vents 15 on the circular surface blow air evenly onto the charging cable 2; the movable groove 11 prevents the hollow linkage rod 12 from interfering with the hollow cable support rod 41 when it moves, ensuring smooth movement. The hollow linkage rod 12 has both gas transmission and power transmission functions. The hollow slide 13 realizes a stable connection between the ring cylinder 14 and the hollow linkage rod 12 and conducts airflow. The ring cylinder 14 and the air vents 15 work together to allow the airflow to evenly cover the surface of the charging cable 2. Combined with the reciprocating movement of the ring cylinder 14 with the hollow linkage rod 12, it achieves comprehensive heat dissipation and dust removal of the charging cable 2, effectively delaying the aging of the insulation layer and ensuring charging safety.

[0038] Please see Figures 1-6 A rectangular groove 16 is provided on the top of the hollow wire support rod 41. A guide tube 17 is fixedly installed on one of the hollow linkage rods 12 below the rectangular groove 16. The end of the guide tube 17 away from the hollow linkage rod 12 is fixedly installed on the hollow wire support rod 41 and communicates with the exhaust chamber 9.

[0039] During charging, the movable sealing plate 23 slides back and forth along the shaft 7, driving the hollow linkage rod 12 fixed thereto to move synchronously. The guide tube 17 installed on one of the hollow linkage rods 12 below the rectangular groove 16 moves accordingly. The rectangular groove 16 at the top of the hollow cable support rod 41 provides sufficient space for the reciprocating movement of the guide tube 17, avoiding interference with the hollow cable support rod 41. At the same time, the end of the guide tube 17 away from the hollow linkage rod 12 is fixed on the hollow cable support rod 41 and connected to the exhaust chamber 9, which can stably transport the gas in the exhaust chamber 9 to the hollow linkage rod 12. The guide tube 17, as a key airflow channel, realizes the airflow connection between the exhaust chamber 9 and the hollow linkage rod 12, providing a continuous and stable gas for the subsequent ring cylinder 14 to blow air to the charging cable 2 through the air outlet 15 for heat dissipation and dust removal, ensuring the efficient implementation of the heat dissipation and dust removal functions.

[0040] Please see Figures 5-7 A cable limiting frame 18 is fixedly installed on one end of the hollow cable support rod 41 near the hollow cable head fixing cylinder 49. The cable limiting frame 18 is fixedly connected to the charging cable 2. The charging cable 2 between the hollow cable head fixing cylinder 49 and the cable limiting frame 18 is bent to allow the charging gun head 3 to rotate.

[0041] The function of the cable limit bracket 18 is to prevent the charging cable 2 from shifting or loosening, ensuring the stability of the cable installation. The bent charging cable 2 provides sufficient rotation margin for the charging gun head 3, making it convenient for staff to flexibly adjust the angle according to the actual docking position. At the same time, it avoids damage to the charging cable 2 due to excessive stretching or bending, taking into account both the convenience of charging operation and the service life of the equipment.

[0042] Please see Figure 7 The hollow wire head fixing cylinder 49 has several gun head cooling holes 19 at one end near the charging gun head 3. A gun head cooling channel 20 is provided on the axis of the rotating seat on the hollow wire head fixing cylinder 49. The gun head cooling channel 20 connects the hollow wire head fixing cylinder 49 and the exhaust chamber 9.

[0043] The gun head cooling channel 20 serves as a dedicated airflow transmission channel, ensuring stable airflow communication between the exhaust chamber 9 and the hollow wire head fixing cylinder 49, guaranteeing directional gas delivery without leakage. The gun head cooling hole 19 disperses the airflow into a uniform airflow, which not only quickly removes the large amount of heat generated by the charging gun head 3 during operation, preventing high temperature from causing performance degradation or damage to the gun head, but also blows away dust adhering to the connection area, ensuring stable charging efficiency, while slowing down the aging rate of the charging gun head 3, improving its service life and the safety of charging operations.

[0044] Please see Figures 1-3 The other end of the winding wheel 43 is provided with an air pump 21 fixedly installed on the top of the charging pile body 1. The air outlet end of the air pump 21 is fixedly connected to the winding wheel 43 through a rotary joint 22 and communicates with the inner cavity of the air guide chamber 44.

[0045] During the charging process, the air pump 21, which is fixedly installed on the top of the charging pile 1, starts and draws in external air. Its outlet end is fixedly connected to the winding wheel 43 through the rotary joint 22. This connection method can keep the air passage sealed and connected when the winding wheel 43 rotates to extend and retract the soft hollow tube 45. Subsequently, the gas is smoothly delivered to the air guide chamber 44 inside the winding wheel 43, providing continuous power for downstream airflow transmission. Among them, the air pump 21, as the core power component, is responsible for generating a stable airflow to meet the heat dissipation and dust removal needs of the charging cable 2 and the charging gun head 3. The rotary joint 22 effectively solves the adaptation problem between the rotation of the winding wheel 43 and the fixed air passage, which not only avoids gas leakage and ensures stable airflow pressure, but also does not interfere with the normal extension and retraction of the winding wheel 43. The two work together to ensure the efficient operation of the air passage system, providing key support for the safety of the charging process and the life of the equipment.

[0046] In practical use, the working principle of this invention is as follows:

[0047] When charging a shunting locomotive is required, the locomotive is first precisely parked at the designated charging position. Then, the servo motor 48, which has a self-locking function, is activated via an external controller. As the servo motor slowly rotates in the reverse direction, it drives the winding wheel 43 on the top recess 42 of the charging pile body 1 to rotate synchronously, causing the soft hollow tube 45 wound on the winding wheel 43 to gradually lengthen. Under the weight of the hollow support rod 41, the hollow connecting rod 47, and the charging cable 2, the hollow support rod 41 slowly rotates downwards around the rotating connection point with the charging pile body 1, thus smoothly lowering the charging cable 2 fixed on the hollow support rod 41. Throughout the process, the charging cable 2 is prevented from directly dragging and contacting the ballast around the track, reducing the risk of outer sheath wear, insulation layer breakage, and internal wire core damage. Finally, the charging gun head 3 is precisely moved to a position near the shunting locomotive charging seat. At this point, the servo motor 48 stops working and maintains its current state through the self-locking function.

[0048] The charging cable 2 passes through the hollow cable head fixing cylinder 49 and the cable tail fixing cylinder 410 on the side of the hollow cable support rod 41. The two fixing cylinders are connected to the hollow cable support rod 41 via a rotating seat (composed of a cylindrical shell fixed on the hollow cable support rod 41 and a cylindrical disk with a connecting rod, the cylindrical disk and the cylindrical shell can rotate relative to each other). This not only provides stable fixing and limiting for the charging cable 2, but also allows the fixing point of the charging cable 2 to adapt to the deformation of the cable itself, avoiding local stress concentration caused by the cable being stretched. At the same time, the charging cable 2 between the hollow cable head fixing cylinder 49 and the cable limiting frame 18 is bent, and an appropriate length of cable is also reserved between the hollow cable head fixing cylinder 49 and the charging gun head 3. The combination of these two allows the staff to flexibly adjust the angle of the charging gun head 3 according to the actual position of the shunting locomotive charging seat. During the adjustment process, the cable at the bend can undergo adaptive deformation, further avoiding damage to the cable due to excessive stretching or bending. The staff only needs to pick up the charging gun head 3 to quickly insert it into the shunting locomotive charging seat to start the charging operation.

[0049] During charging, the charging cable 2 and the charging gun head 3 continuously generate a large amount of heat. High temperatures not only reduce charging efficiency but also accelerate the aging of the cable insulation layer. Therefore, the air pump 21 needs to be started simultaneously. After the air pump 21 draws in external air, it delivers it to the air guide chamber 44 inside the winding wheel 43 through the rotary joint 22. The gas then enters the hollow connecting rod 47 and the air storage chamber 8 (which is formed by the baffle 5 inside the hollow wire support rod 41, the movable sealing plate 23, and the inner wall of the hollow wire support rod 41) through the soft hollow tube 45. Several evenly distributed load-bearing rings 46 fixedly installed inside the soft hollow tube 45 can effectively resist the pressure generated when the winding wheel 43 winds, prevent the soft hollow tube 45 from deforming and blocking the air passage, and ensure smooth gas delivery.

[0050] As gas continues to be filled, the gas pressure in the gas storage chamber 8 gradually increases, pushing the movable sealing plate 23 to move away from the baffle 5 along the shaft 7, causing the telescopic spring 6 to stretch and deform. When the movable sealing plate 23 moves to the designated position on the shaft 7, the connecting gas groove 10 on the shaft 7 connects the gas storage chamber 8 with the exhaust chamber 9 (which is surrounded by the movable sealing plate 23 and the inner wall of the hollow support rod 41), and the gas in the gas storage chamber 8 quickly enters the exhaust chamber 9. The gas entering the exhaust chamber 9 is divided into two paths: one path enters the hollow linkage rod 12 through the guide pipe 17 (the rectangular groove 16 provides ample space for the guide pipe 17 to reciprocate with the movable sealing plate 23), then flows through the hollow slide 13 and the ring cylinder 14 in sequence, and finally exits from several air outlets 15 on the inner circular surface of the ring cylinder 14, blowing directly onto the charging cable 2 that runs through the ring cylinder 14; the other path enters the hollow line head fixing cylinder 49 through the gun head cooling channel 20 on the axis of the rotating seat, and then exits through several gun head cooling holes 19 near the end of the hollow line head fixing cylinder 49, blowing precisely onto the connection area between the charging gun head 3 and the shunting locomotive charging seat.

[0051] These two airflows can not only quickly remove the heat from the charging cable 2 and the charging gun head 3, avoiding equipment aging and safety risks caused by high temperature, but also blow away the dust attached to the surface of the cable. The movement of shunting locomotives in railway yards easily generates a lot of dust, and the accumulation of dust will hinder the heat dissipation of the cable. The blowing of airflow can effectively solve this problem and further protect the insulation performance of the charging cable 2.

[0052] When the gas in the gas storage chamber 8 enters the exhaust chamber 9, the gas pressure in the gas storage chamber 8 drops. The telescopic spring 6 resets under the action of elastic restoring force, pulling the movable sealing plate 23 to move in the opposite direction along the shaft 7, resealing the connecting gas groove 10, thus disconnecting the gas storage chamber 8 from the exhaust chamber 9. Subsequently, the gas storage chamber 8 begins to accumulate gas again. This cycle repeats continuously. The movable sealing plate 23 continuously reciprocates on the shaft 7, driving the hollow linkage rod 12 fixedly connected to it to move synchronously, thereby driving the hollow slide 13 and the ring cylinder 14 to move repeatedly along the length of the charging cable 2, achieving comprehensive and uniform heat dissipation and dust removal for the entire charging cable 2.

[0053] After the charging operation is completed, the servo motor 48 is controlled to rotate forward by the external controller, which drives the winding wheel 43 to rewind and store the soft hollow tube 45. The hollow cable support rod 41 then rotates upward to reset, and the charging cable 2 is smoothly returned to the initial position (at this time, it serves as a charging cable placement rack), avoiding long-term exposure of the cable to friction from gravel or external force damage, and extending the service life of the equipment.

[0054] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A ground charging system for new energy shunting locomotives, characterized in that, It includes a charging pile body (1) and charging cables (2) symmetrically fixedly installed on the side of the charging pile body (1). A charging gun head (3) is fixedly installed at one end of the charging cable (2) away from the charging pile body (1). A wire support structure (4) is provided on the outside of the charging pile body (1). The line support structure (4) includes two hollow line support rods (41) rotatably connected to both sides of the charging pile body (1). The hollow line support rods (41) are rotatably connected to a hollow line head fixing cylinder (49) and a line tail fixing cylinder (410) via a rotating seat. The charging cable (2) passes through the hollow line head fixing cylinder (49) and the line tail fixing cylinder (410). A recessed seat (42) is fixedly installed on the top of the charging pile body (1). A winding wheel (43) is rotatably connected to the recessed seat (42). An air guide cavity (44) is opened inside the winding wheel (43). A soft hollow tube (45) communicating with the inner cavity of the air guide cavity (44) is fixedly installed on the winding wheel (43). Several evenly distributed load-bearing rings (46) are fixedly installed in the inner cavity of the soft hollow tube (45). A hollow connecting rod (47) is fixedly installed at the end of the soft hollow tube (45) away from the winding wheel (43). The hollow connecting rod (47) is fixedly connected to the hollow wire support rod (41). A servo motor (48) is fixedly installed on the top of the charging pile body (1) at one end of the winding wheel (43). The output end of the servo motor (48) is fixedly connected to the winding wheel (43).

2. The ground charging system for new energy shunting locomotives according to claim 1, characterized in that: The top side of the charging pile body (1) is rotatably connected to an auxiliary pulley, wherein the soft hollow tube (45) is slidably connected to the auxiliary pulley; The rotating seat includes a cylindrical shell and a cylindrical disk with a connecting rod. The cylindrical shell is fixedly installed on the side of the hollow wire support rod (41), and the cylindrical disk with the connecting rod is rotatably connected to the cylindrical shell. The inner walls of the hollow wire head fixing cylinder (49) and the wire tail fixing cylinder (410) are both fixedly installed with cross wire frames, and the charging cable (2) is fixedly installed in the hollow wire head fixing cylinder (49) and the wire tail fixing cylinder (410) through the cross wire frames.

3. The ground charging system for new energy shunting locomotives according to claim 1, characterized in that: A baffle (5) is fixedly installed in the inner cavity of the hollow wire support rod (41). A telescopic spring (6) is fixedly installed on the baffle (5). A movable sealing plate (23) is fixedly installed at the end of the telescopic spring (6) away from the baffle (5). A shaft (7) is fixedly installed on the baffle (5). The shaft (7) and the movable sealing plate (23) are slidably and sealingly connected. The movable sealing plate (23), baffle (5) and hollow wire rod (41) form a gas storage cavity (8), which is connected to the inner cavity of the hollow connecting rod (47); the movable sealing plate (23) and hollow wire rod (41) form an exhaust cavity (9), and a connecting gas groove (10) is provided on the shaft (7) located in the exhaust cavity (9), and the number of connecting gas grooves (10) is several.

4. The ground charging system for new energy shunting locomotives according to claim 3, characterized in that: The hollow cable support rod (41) has a movable groove (11) on its side. The movable sealing plate (23) has a hollow linkage rod (12) fixedly installed at its four corners. The hollow linkage rod (12) is slidably and sealed to the baffle (5). Several hollow slides (13) communicating with the inner cavity of the hollow linkage rod (12) are fixedly installed on the hollow linkage rod (12). An annular cylinder (14) communicating with the inner cavity of the hollow slide (13) is fixedly installed on the hollow slide (13). The inner diameter of the annular cylinder (14) is larger than the diameter of the charging cable (2). Several air vents (15) are opened on the inner circular surface of the annular cylinder (14).

5. The ground charging system for new energy shunting locomotives according to claim 4, characterized in that: The top of the hollow wire support rod (41) is provided with a rectangular groove (16). A guide tube (17) is fixedly installed on one of the hollow linkage rods (12) below the rectangular groove (16). The end of the guide tube (17) away from the hollow linkage rod (12) is fixedly installed on the hollow wire support rod (41) and communicates with the exhaust chamber (9).

6. The ground charging system for new energy shunting locomotives according to claim 1, characterized in that: A cable limiting frame (18) is fixedly installed on one end of the hollow cable support rod (41) near the hollow cable head fixing cylinder (49). The cable limiting frame (18) is fixedly connected to the charging cable (2). The charging cable (2) between the hollow cable head fixing cylinder (49) and the cable limiting frame (18) is bent to allow the charging gun head (3) to rotate.

7. The ground charging system for new energy shunting locomotives according to claim 1, characterized in that: The hollow wire head fixing cylinder (49) has several gun head cooling holes (19) at one end near the charging gun head (3). A gun head cooling channel (20) is provided on the axis of the rotating seat on the hollow wire head fixing cylinder (49). The gun head cooling channel (20) connects the hollow wire head fixing cylinder (49) and the exhaust chamber (9).

8. The ground charging system for new energy shunting locomotives according to claim 1, characterized in that: The other end of the winding wheel (43) is provided with an air pump (21) fixedly installed on the top of the charging pile body (1). The air outlet of the air pump (21) is fixedly connected to the winding wheel (43) through a rotary joint (22) and communicates with the inner cavity of the air guide chamber (44).

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