Auxiliary feeding device of charging trolley

Abstract

The invention provides an auxiliary feeding device for a charging trolley, and relates to the technical field of engineering machinery, the auxiliary feeding device comprises a mounting seat and a charging pipe, a limiting ring sleeve is slidably mounted on the mounting seat, and a reset mechanism for driving the limiting ring sleeve to slidably reset on the mounting seat is mounted on the mounting seat. According to the auxiliary feeding device of the charging trolley, stable guide supporting can be formed for a charging pipe, part of pulling force can be offset through the buffering and resetting effect of the resetting mechanism when the charging pipe is pulled by external force, local stress overload of the charging pipe is avoided, the maximum bending degree of the charging pipe is limited by the anti-bending mechanism, and the charging pipe is prevented from being damaged. The position of the explosive charging pipe in the conveying channel can be flexibly adjusted and fixed, the phenomenon that the explosive charging pipe droops due to position deviation is avoided, the dragging and squeezing effects borne by the explosive charging pipe in the operation process are reduced, it is ensured that the explosive conveying path is stable, and the explosive conveying efficiency is improved. And meanwhile, the precision and safety of explosive loading operation are improved.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and in particular to an auxiliary feeding device for a charging trolley. Background Technology

[0002] In blasting operations such as mining and tunneling, the charging trolley is the core equipment for achieving automated and efficient loading of explosives. As a key component of the charging trolley, the auxiliary feeding device is mainly responsible for conveying explosives from the storage unit to the charging execution mechanism. Its operational stability directly affects the charging efficiency and operational safety.

[0003] In existing auxiliary feeding devices for explosive charging trolleys, the charging tube, as the direct carrier for explosive delivery, is typically made of flexible or semi-rigid tubing (such as rubber hoses, composite flexible hoses, etc.). One end connects to the feeding and conveying mechanism, and the other end connects to the charging gun or borehole guide structure. During the charging operation, the charging trolley needs to adjust its working posture according to the borehole position, causing the conveying path of the auxiliary feeding device to change accordingly. Furthermore, the charging tube itself has a certain length and weight, and existing structures lack effective support and guiding constraints for the charging tube. When the charging trolley moves, adjusts its working height or horizontal distance, the unconstrained charging tube is prone to drooping due to its own weight, resulting in irregular bends between the connecting end and the free end. The material properties of the charging tube determine that its bending radius has a tolerance limit; excessive bending will cause localized stress concentration on the tube wall. Simultaneously, under the action of trolley movement or feeding push force, the bent portion will be subjected to continuous traction and compression. Summary of the Invention

[0004] Based on the technical problems existing in the background art, the present invention proposes an auxiliary feeding device for a charging trolley.

[0005] The present invention proposes an auxiliary feeding device for a charging trolley, comprising a mounting base and a charging tube, wherein a limiting ring is slidably mounted on the mounting base, and a reset mechanism is mounted on the mounting base to drive the limiting ring to slide and reset on the mounting base; The outer periphery of the charging tube is equipped with an anti-bending mechanism, which is used to limit the maximum degree of bending of the charging tube. The limiting ring sleeve has a through-hole conveying channel, the drug-filling tube passes through the conveying channel, and the limiting ring sleeve is equipped with a locking adjustment mechanism, which is used to adjust the position of the drug-filling tube in the conveying channel.

[0006] Preferably, the anti-bending mechanism includes mounting rings and telescopic bending components; the number of mounting rings is multiple, and the multiple mounting rings are arranged at equal intervals on the outer periphery of the charge tube; The number of telescopic bending components is also multiple, with at least three telescopic bending components between two adjacent mounting rings. The telescopic bending components are used to limit the maximum bending degree of the loading tube between two adjacent mounting rings.

[0007] Preferably, the telescopic bending assembly includes a telescopic sleeve, a limiting slider, a length-limiting telescopic rod, and a return spring; there are two telescopic sleeves, which are respectively connected to the sides of two adjacent mounting rings that are close to each other, and telescopic holes are opened in the two telescopic sleeves; there are two limiting sliders, which are respectively slidably installed in the two telescopic holes; the two ends of the length-limiting telescopic rod pass through the ends of the two telescopic sleeves and are fixedly connected to the two limiting sliders; there are two return springs, which are respectively located in the two telescopic holes, and the two ends of the return springs abut against the inner walls of the ends of the limiting sliders and the telescopic holes.

[0008] Preferably, the locking adjustment mechanism includes a drive roller, a brake pad, a drive assembly, and a locking assembly; the inner wall of the limiting ring conveying channel is provided with multiple rotating grooves in the circumferential direction, the number of drive rollers is the same as the number of rotating grooves and they are arranged in a one-to-one correspondence, and the drive rollers are rotatably installed in the rotating grooves; The drive roller has multiple movable slots circumferentially opened on its outer periphery. The number of brake pads is the same as the number of movable slots and is set one-to-one. The brake pads are slidably disposed in the movable slots. The drive assembly is used to drive the brake pad to slide out within the movable groove; The locking assembly is used to fix the position of the drive roller in the rotating groove.

[0009] Preferably, the drive assembly includes a shaft, an inclined plate, a retraction spring, and an electric telescopic rod; the number of shafts is two, and the two shafts are respectively installed at both ends of the drive roller, and the shafts are rotatably installed in the movable groove; The number of inclined plates is the same as the number of brake pads and they are arranged in a one-to-one correspondence. Multiple inclined plates are arranged in a circular array on the outer periphery of the shaft, and the inclined surface of the inclined plate slides in cooperation with one side of the brake pad. The retracting spring is used to drive the brake pad to slide and reset within the movable groove; The electric telescopic rod is installed inside the limiting ring sleeve, and the output shaft of the electric telescopic rod is rotatably connected to the end of the shaft away from the drive roller.

[0010] Preferably, the locking assembly includes a locking block, a reset component, and a driving component; the locking block is slidably installed inside the limiting ring sleeve, and one side of the locking block can abut against the outer periphery of the shaft; The reset component is used to drive the locking block away from the shaft; The driving component is used to drive the locking block to press against the outer periphery of the shaft.

[0011] Preferably, the reset component includes a reset spring, both ends of the locking block are fixedly connected to bosses, the limiting ring sleeve has a limiting groove that slides with the bosses, the reset spring is located in the limiting groove, and both ends of the reset spring abut against the inner walls of the bosses and the limiting grooves, respectively.

[0012] Preferably, the driving component includes an annular driving block and a trapezoidal block; the annular driving block is rotatably mounted on the shaft, and a driving groove that slides with the shaft is provided in the limiting ring sleeve; the trapezoidal block is slidably installed in the limiting ring sleeve, and the inclined surface of the trapezoidal block slides with the side of the locking block away from the shaft; the annular driving block can abut against the trapezoidal block and push the annular driving block to slide within the limiting ring sleeve.

[0013] Preferably, the reset mechanism includes a fixed block, a sliding rod, a protrusion, and a buffer spring; there are two fixed blocks, both of which are mounted on a limiting ring sleeve; the two ends of the sliding rod are respectively connected to the two fixed blocks; the protrusion is mounted on a mounting base; the sliding rod slides through the protrusion; there are two buffer springs, both of which are fitted onto the sliding rod, and the two buffer springs are respectively located on both sides of the protrusion.

[0014] Preferably, the drug delivery tube includes a conductive nitrile rubber composite inner layer, a drug delivery tube body, a conductive rubber base composite layer, and a conductive connecting rod; the drug delivery tube body is sleeved on the conductive nitrile rubber composite inner layer, the conductive rubber base composite layer is sleeved on the drug delivery tube body, the conductive connecting rod penetrates the drug delivery tube body, and both ends of the conductive connecting rod are respectively connected to the conductive nitrile rubber composite inner layer and the conductive rubber base composite layer.

[0015] The auxiliary feeding device for a charging trolley proposed in this invention has the following beneficial effects: Through the installation base, charging tube, limiting ring, reset mechanism, anti-bending mechanism, and locking adjustment mechanism, a stable guiding support can be formed for the charging tube. Furthermore, when the charging tube is subjected to external force, the reset mechanism's buffering and reset action can offset part of the tensile force, preventing localized overload of the charging tube. The anti-bending mechanism limits the maximum bending degree of the charging tube, fundamentally preventing stress concentration caused by excessive bending, effectively protecting the integrity of the tube wall structure, and extending the service life of the charging tube. This design also prevents the charging tube from becoming blocked due to excessive bending. The position of the charging tube within the conveying channel can be flexibly adjusted and fixed, preventing it from drooping due to positional deviation. This reduces the pulling and squeezing effects on the charging tube during operation, ensuring a stable explosive conveying path. At the same time, it improves the accuracy and safety of the charging operation. The synergistic effect of each component forms a full-process constraint on the charging tube, from support, guidance, bending restriction to position fixation. This significantly improves the operational stability of the auxiliary feeding device, thereby ensuring the operational efficiency and overall safety of the charging trolley. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an auxiliary feeding device for a drug loading trolley proposed in this invention; Figure 2 This is a cross-sectional view of the limiting ring sleeve in the auxiliary feeding device for a drug loading trolley proposed in this invention; Figure 3 This is a partial cross-sectional view of the limiting ring sleeve in the auxiliary feeding device for a drug loading trolley proposed in this invention; Figure 4 This is a cross-sectional view of the anti-bending mechanism in the auxiliary feeding device for a drug loading trolley proposed in this invention; Figure 5 This is a cross-sectional view of the end of the drive roller in an auxiliary feeding device for a drug loading trolley proposed in this invention. Figure 6 This is a schematic diagram of the connection position of the inclined plate and the shaft in an auxiliary feeding device for a drug loading trolley proposed in this invention. Figure 7 This invention proposes an auxiliary feeding device for a drug loading trolley. Figure 3 Enlarged view of point A in the middle; Figure 8 This is a cross-sectional view of the shaft within the limiting ring sleeve in an auxiliary feeding device for a drug loading trolley proposed in this invention. Figure 9 This is a schematic diagram of the locking block in an auxiliary feeding device for a drug loading trolley proposed in this invention; Figure 10 This is a cross-sectional view of the reset mechanism in an auxiliary feeding device for a drug loading trolley proposed in this invention; Figure 11This is a cross-sectional view of the end of the loading tube in an auxiliary loading device for a loading trolley proposed in this invention.

[0017] In the diagram: 1. Mounting base; 2. Limiting ring sleeve; 3. Mounting ring; 4. Telescopic sleeve; 5. Limiting slider; 6. Length-limiting telescopic rod; 7. Return spring; 8. Drive roller; 9. Brake pad; 10. Shaft; 13. Slanted panel; 14. Retraction spring; 15. Electric telescopic rod; 16. Locking block; 17. Return spring; 18. Annular drive block; 19. Trapezoidal block; 20. Fixing block; 21. Slide rod; 22. Protrusion; 23. Buffer spring; 24. Conductive nitrile rubber composite inner layer; 25. Drug delivery tube body; 26. Conductive rubber-based composite layer; 27. Conductive connecting rod. Detailed Implementation

[0018] Reference Figures 1-11 This invention proposes an auxiliary feeding device for a charging trolley, comprising a mounting base 1 and a charging tube. A limiting ring 2 is slidably mounted on the mounting base 1, and a reset mechanism is installed on the mounting base 1 to drive the limiting ring 2 to slide and reset on the mounting base 1. During installation, multiple mounting bases 1 are installed on the charging trolley and arranged according to the layout of the charging tube. When the charging tube is subjected to external force, it can also play a certain buffering role, reducing the damage to the charging tube caused by pulling. An anti-bending mechanism is installed on the outer periphery of the charging tube to limit the maximum bending degree of the charging tube. This is to ensure the stability of explosive delivery, the structural and electrical safety of the tube itself, and the reliability of the operation process. Therefore, the maximum bending degree of the charging tube is limited. A conveying channel is opened through the limiting ring 2, through which the charging tube passes. A locking adjustment mechanism is installed on the limiting ring 2. The locking adjustment mechanism is used to adjust the position of the charging tube in the conveying channel. When loading explosives, most of the explosives are conveyed to the designated position through the charging tube. Therefore, it is necessary to extend the end of the charging tube to the designated position. In order to ensure the stability of the position of the charging tube, the locking adjustment mechanism can fix the sliding of the charging tube in the limiting ring 2, thereby ensuring the accurate delivery of explosives. It can also prevent the charging tube from sliding and drooping, reducing the possibility of the charging tube being pulled or squeezed and damaged.

[0019] like Figure 1 and Figure 4As shown, the anti-bending mechanism includes mounting rings 3 and telescopic bending components. Multiple mounting rings 3 are arranged at equal intervals around the outer circumference of the loading tube. Multiple telescopic bending components are also present, with at least three between adjacent mounting rings 3. These components limit the maximum bending degree of the loading tube between adjacent mounting rings 3. Each telescopic bending component includes a telescopic sleeve 4, a limiting slider 5, a length-limiting telescopic rod 6, and a return spring 7. Two telescopic sleeves 4 are connected to the sides of two adjacent mounting rings 3 that are close to each other. Each sleeve has a telescopic hole. Two limiting sliders 5 are slidably installed in the two telescopic holes. The two ends of the length-limiting telescopic rod 6 pass through the ends of the two telescopic sleeves 4 and are fixedly connected to the two limiting sliders 5. The number of return springs 7 is... There are two return springs 7, each located in one of the two telescopic holes. The two ends of the return springs 7 abut against the limiting sliders 5 and the inner walls of the telescopic holes, respectively. In actual use, eight telescopic bending components are set between two adjacent mounting rings 3. The eight telescopic bending components are arranged in a ring array on the outer periphery of the drug-filling tube. When the drug-filling tube bends, the limiting sliders 5 at both ends of the length-limiting telescopic rod 6 slide deep inside the two telescopic sleeves 4, and the limiting sliders 5 at both ends of the length-limiting telescopic rod 6 on the other side slide inside the two telescopic sleeves 4. The length-limiting telescopic rod 6 extends out of the telescopic sleeve 4 until it can no longer retract or extend, thereby limiting the drug-filling tube from bending further and limiting the maximum degree of bending. The rebound effect of the return springs 7 can drive the limiting sliders 5 to slide back to their original position, thus facilitating the drug-filling tube to be in a straight state and reducing the occurrence of bending and drooping of the drug-filling tube.

[0020] like Figure 2 and Figure 3As shown, the locking adjustment mechanism includes a drive roller 8, a brake pad 9, a drive assembly, and a locking assembly. The inner wall of the conveying channel of the limiting ring 2 has multiple rotating grooves circumferentially arranged. The number of drive rollers 8 is the same as the number of rotating grooves and they are arranged in a one-to-one correspondence. The drive rollers 8 are rotatably installed in the rotating grooves. The outer circumference of the drive rollers 8 has multiple movable grooves circumferentially arranged. The number of brake pads 9 is the same as the number of movable grooves and they are arranged in a one-to-one correspondence. The brake pads 9 are slidably arranged in the movable grooves. The drive assembly is used to drive the brake pads 9 to slide out of the movable grooves. The locking assembly is used to fix the position of the drive rollers 8 in the rotating grooves. In actual use… During the process, when the charging tube extends to the designated position, the rolling friction between the drive roller 8 and the charging tube reduces friction and static electricity generation. When loading explosives, the drive assembly drives the brake pads 9 to extend out of the movable groove. Multiple brake pads 9 and the drive roller 8 form an impeller-like structure. The locking assembly then fixes the position of the drive roller 8, restricting its rotation. The brake pads 9 lock the position of the mounting ring 3 fitted around the outer periphery of the charging tube, thereby restricting the sliding of the charging tube and preventing it from drooping. This reduces the pulling and squeezing of the drooping charging tube and ensures the stability of the charging tube during loading.

[0021] like Figure 2 , Figure 3 and Figure 6 As shown, the drive assembly includes a shaft 10, inclined plates 13, a retraction spring 14, and an electric telescopic rod 15. There are two shafts 10, each mounted at one end of the drive roller 8. The shafts 10 are rotatably mounted within a movable groove. The number of inclined plates 13 corresponds to the number of brake pads 9, and they are arranged in a circular array around the shafts 10. The inclined surfaces of the inclined plates 13 slide against one side of the brake pads 9. The retraction spring 14 drives the brake pads 9 to slide and reset within the movable groove. Anti-detachment sliders are fixedly connected to both sides of the brake pads 9. A retraction groove is provided inside the drive roller 8 to slide against the anti-detachment sliders. The two ends of the retraction spring 14 abut against the inner walls of the anti-detachment sliders and the retraction groove, respectively. The telescopic rod 15 is installed inside the limiting ring 2. The output shaft of the electric telescopic rod 15 is rotatably connected to the end of the shaft 10 away from the drive roller 8. In actual operation, the brake pad 9 needs to extend out of the movable groove and form an impeller-like structure with the drive roller 8. The electric telescopic rod 15 drives the shaft 10 to slide. While the shaft 10 slides, it drives multiple inclined panels 13 to slide synchronously. The inclined surface of the sliding inclined panel 13 and the side of the brake pad 9 slide together, so that the brake pad 9 slides in the movable groove and is pushed out of the movable groove. When the brake pad 9 does not need to extend out of the movable groove, the electric telescopic rod 15 drives the shaft 10 and the inclined panel 13 to slide back to their original positions. Under the rebound action of the retraction spring 14, the brake pad 9 is driven to retract into the movable groove to ensure the storage of the brake pad 9.

[0022] Figure 3 , Figure 7 , Figure 8 and Figure 9 As shown, the locking assembly includes a locking block 16, a reset component, and a driving component. The locking block 16 is slidably installed inside the limiting ring sleeve 2, and one side of the locking block 16 can abut against the outer periphery of the shaft 10. The reset component is used to drive the locking block 16 away from the shaft 10, and the driving component is used to drive the locking block 16 to abut against the outer periphery of the shaft 10. The reset component includes a reset spring 17. Both ends of the locking block 16 are fixedly connected to bosses. The limiting ring sleeve 2 has a limiting groove that slides with the bosses. The reset spring 17 is located in the limiting groove, and both ends of the reset spring 17 abut against the inner walls of the bosses and the limiting groove, respectively. The driving component includes an annular driving block 18 and a trapezoidal block 19. The annular driving block 18 is rotatably mounted on the shaft 10. The limiting ring sleeve 2 has a driving groove that slides with the shaft 10. The trapezoidal block 19 is slidably installed inside the limiting ring sleeve 2, and the inclined surface of the trapezoidal block 19 is away from the locking block 16. One side of the rod 10 slides, and the annular drive block 18 can abut against the trapezoidal block 19 and push the annular drive block 18 to slide within the limiting ring sleeve 2. In actual use, when it is necessary to fix the drive roller 8, the electric telescopic rod 15 drives the shaft 10 to slide. The shaft 10 drives the locking block 16 to slide synchronously. The locking block 16 abuts against the trapezoidal block 19 and drives the trapezoidal block 19 to slide synchronously. When the trapezoidal block 19 slides, its inclined surface and the side of the locking block 16 slide together, pushing the locking block 16 to press against the outer circumference of the shaft 10. The rotation of the shaft 10 is restricted by friction, thereby fixing the position of the shaft 10. The shaft 10 then fixes the position of the drive roller 8. When the restriction on the drive roller 8 is released, the shaft 10 slides back to its original position. Under the rebound action of the return spring 17, the locking block 16 is driven away from the shaft 10, so that the shaft 10 is not restricted by friction and the rotation of the shaft 10 is smooth.

[0023] like Figure 1 and Figure 10As shown, the reset mechanism includes a fixed block 20, a slide rod 21, a protrusion 22, and a buffer spring 23. There are two fixed blocks 20, both mounted on the limiting ring 2. The two ends of the slide rod 21 are connected to the two fixed blocks 20 respectively. The protrusion 22 is mounted on the mounting base 1, and the slide rod 21 slides through the protrusion 22. There are two buffer springs 23, both fitted onto the slide rod 21, and the two buffer springs 23 are located on opposite sides of the protrusion 22. When the loading tube is subjected to... When an external force is applied, it will pull the charge tube to move. When the position of the charge tube is fixed, it will ensure the protection of the charge tube. The charge tube will drive the limiting ring 2, the fixing block 20 and the slide rod 21 to move synchronously. The slide rod 21 slides on the protrusion 22 and squeezes one of the buffer springs 23, which plays a buffering role. After the pulling of the charge tube ends, the rebound effect of the buffer spring 23 will drive the fixing block 20 and the limiting ring 2 to slide back to their original position, and drive the charge tube to return to its original position, so as to avoid the charge tube from being excessively bent locally and getting stuck.

[0024] like Figure 1 and Figure 11 As shown, the drug delivery tube includes a conductive nitrile rubber composite inner layer 24, a drug delivery tube body 25, a conductive rubber base composite layer 26, and a conductive connecting rod 27. The drug delivery tube body 25 is sleeved on the conductive nitrile rubber composite inner layer 24, the conductive rubber base composite layer 26 is sleeved on the drug delivery tube body 25, and the conductive connecting rod 27 penetrates through the drug delivery tube body 25. Both ends of the conductive connecting rod 27 are connected to the conductive nitrile rubber composite inner layer 24 and the conductive rubber base composite layer 26, respectively. The conductive nitrile rubber composite inner layer 24, the conductive connecting rod 27, and the conductive rubber base composite layer 26 transfer static electricity to the limiting ring 2 and the mounting base 1, and then discharge the static electricity through the power line grounding.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An auxiliary feeding device for a drug loading trolley, characterized in that, It includes a mounting base (1) and a charging tube. A limiting ring (2) is slidably mounted on the mounting base (1). A reset mechanism is installed on the mounting base (1) to drive the limiting ring (2) to slide and reset on the mounting base (1). The outer periphery of the charging tube is equipped with an anti-bending mechanism, which is used to limit the maximum degree of bending of the charging tube. The limiting ring (2) has a conveying channel through which the drug-loading tube passes. The limiting ring (2) is equipped with a locking adjustment mechanism, which is used to adjust the position of the drug-loading tube in the conveying channel.

2. The auxiliary feeding device for a charging trolley according to claim 1, characterized in that, The anti-bending mechanism includes an installation ring (3) and a telescopic bending component; the number of installation rings (3) is multiple, and the multiple installation rings (3) are arranged at equal intervals and fitted around the outer periphery of the charging tube; The number of telescopic bending components is also multiple, with at least three telescopic bending components between two adjacent mounting rings (3). The telescopic bending components are used to limit the maximum bending degree of the charging tube between two adjacent mounting rings (3).

3. The auxiliary feeding device for a charging trolley according to claim 2, characterized in that, The telescopic bending assembly includes a telescopic sleeve (4), a limiting slider (5), a length-limiting telescopic rod (6), and a return spring (7). There are two telescopic sleeves (4), which are respectively connected to the side of two adjacent mounting rings (3) that are close to each other. The two telescopic sleeves (4) have telescopic holes. There are two limiting sliders (5), which are respectively slidably installed in the two telescopic holes. The two ends of the length-limiting telescopic rod (6) pass through the ends of the two telescopic sleeves (4) and are fixedly connected to the two limiting sliders (5). There are two return springs (7), which are respectively located in the two telescopic holes, and the two ends of the return springs (7) abut against the inner wall of the end of the limiting slider (5) and the telescopic hole, respectively.

4. The auxiliary feeding device for a charging trolley according to claim 1, characterized in that, The locking adjustment mechanism includes a drive roller (8), a brake pad (9), a drive assembly and a locking assembly; the inner wall of the conveying channel of the limiting ring sleeve (2) is provided with multiple rotating grooves in the circumferential direction, the number of drive rollers (8) is the same as the number of rotating grooves and is set one by one, and the drive rollers (8) are rotatably installed in the rotating grooves; The drive roller (8) has multiple movable grooves circumferentially arranged on its outer periphery. The number of brake pads (9) is the same as the number of movable grooves and they are arranged in a one-to-one correspondence. The brake pads (9) are slidably arranged in the movable grooves. The drive assembly is used to drive the brake pad (9) to slide out in the movable groove; The locking assembly is used to fix the position of the drive roller (8) in the rotating groove.

5. The auxiliary feeding device for a charging trolley according to claim 4, characterized in that, The drive assembly includes a shaft (10), an inclined plate (13), a retraction spring (14), and an electric telescopic rod (15); there are two shafts (10), which are respectively installed at both ends of the drive roller (8), and the shafts (10) are rotatably installed in the movable groove; The number of inclined plates (13) is the same as the number of brake pads (9) and they are arranged in a one-to-one correspondence. Multiple inclined plates (13) are arranged in a ring array on the outer periphery of the shaft (10). The inclined surface of the inclined plate (13) slides in cooperation with one side of the brake pad (9). The retraction spring (14) is used to drive the brake pad (9) to slide and reset in the movable groove; The electric telescopic rod (15) is installed inside the limiting ring (2), and the output shaft of the electric telescopic rod (15) is rotatably connected to the end of the shaft (10) away from the drive roller (8).

6. The auxiliary feeding device for a charging trolley according to claim 5, characterized in that, The locking assembly includes a locking block (16), a reset component and a drive component; the locking block (16) is slidably installed inside the limiting ring sleeve (2), and one side of the locking block (16) can abut against the outer periphery of the shaft (10); The reset component is used to drive the locking block (16) away from the shaft (10). The driving component is used to drive the locking block (16) to press against the outer periphery of the shaft (10).

7. The auxiliary feeding device for a charging trolley according to claim 6, characterized in that, The reset component includes a reset spring (17), and both ends of the locking block (16) are fixedly connected with bosses. The limiting ring sleeve (2) has a limiting groove that slides with the bosses. The reset spring (17) is located in the limiting groove. Both ends of the reset spring (17) abut against the inner walls of the bosses and the limiting grooves, respectively.

8. The auxiliary feeding device for a charging trolley according to claim 7, characterized in that, The driving component includes an annular driving block (18) and a trapezoidal block (19); the annular driving block (18) is rotatably mounted on the shaft (10), and the limiting ring sleeve (2) has a driving groove that slides with the shaft (10). The trapezoidal block (19) is slidably installed in the limiting ring sleeve (2). The inclined surface of the trapezoidal block (19) slides with the side of the locking block (16) away from the shaft (10). The annular driving block (18) can abut against the trapezoidal block (19) and push the annular driving block (18) to slide in the limiting ring sleeve (2).

9. The auxiliary feeding device for a charging trolley according to claim 7, characterized in that, The reset mechanism includes a fixed block (20), a slide rod (21), a protrusion (22), and a buffer spring (23). There are two fixed blocks (20), both of which are mounted on the limiting ring (2). The two ends of the slide rod (21) are connected to the two fixed blocks (20) respectively. The protrusion (22) is mounted on the mounting base (1). The slide rod (21) slides through the protrusion (22). There are two buffer springs (23), both of which are fitted on the slide rod (21), and the two buffer springs (23) are located on both sides of the protrusion (22).

10. The auxiliary feeding device for a charging trolley according to claim 1, characterized in that, The drug delivery tube includes a conductive nitrile rubber composite inner layer (24), a drug delivery tube body (25), a conductive rubber base composite layer (26), and a conductive connecting rod (27). The drug delivery tube body (25) is sleeved on the conductive nitrile rubber composite inner layer (24), the conductive rubber base composite layer (26) is sleeved on the drug delivery tube body (25), and the conductive connecting rod (27) penetrates the drug delivery tube body (25). The two ends of the conductive connecting rod (27) are respectively connected to the conductive nitrile rubber composite inner layer (24) and the conductive rubber base composite layer (26).

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