Automatic tension cable winding mechanism for charging pile

Abstract

The invention relates to the technical field of automobile charging piles, in particular to a charging pile tension automatic cable winding mechanism which comprises a charging pile, a protection carding assembly and a lubricating assembly, and a top support is arranged above the charging pile. When the charging gun is used, an operator pulls out the charging gun head and then pulls the winding steel rope, the winding motor controls the tension winding disc to unwind the winding steel rope, the cable can move to a vehicle along with the operator, and on the contrary, the cable is lifted and lifted by the winding steel rope. In addition, in the using process, rainwater and pollutants attached to the surface of the winding steel rope can be treated through the protection carding assembly and the lubricating assembly, the rotation stability of the tension winding disc driven by the winding motor can be automatically maintained, and operation is convenient, safe and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile charging piles, in particular to a charging pile tension automatic winding cable mechanism. BACKGROUND

[0002] The automobile charging pile is also called an electric vehicle charging station, which is a special equipment for providing power supply for electric vehicles, connecting with the automobile through the power output end with the charging plug, converting the power grid power into the power stored in the vehicle battery, so that the electric vehicle can store enough power to support its operation. The existing patent CN114347828A discloses an electric vehicle charging pile with automatic winding function of cable, which comprises a charging pile body, a controller installed in the charging pile body, an identity authentication device and a display device installed on the charging pile body, the identity authentication device and the display device are connected with the controller, the charging pile body is connected with a charging cable and a charging plug for charging the electric vehicle, one end of the charging cable is connected with the charging pile body, and the other end is connected with the charging plug, a charging slot for inserting the charging plug is formed on the charging pile body, and a winding device for winding the charging cable is installed on the charging pile body, the above-mentioned scheme realizes the winding of the charging cable by the winding device, since one end of the charging cable of the charging pile needs to be fixedly connected with the charging pile, damage to the connection position is easy to occur after long time use, and the repeated bending of the charging cable can affect the service life, which has certain safety hidden danger. SUMMARY

[0003] The present application aims to provide a charging pile tension automatic winding cable mechanism to solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a charging pile tension automatic winding cable mechanism, comprising: A charging pile, a top support is arranged above the charging pile, a cable winding box is vertically arranged on both sides of the top support, a winding motor is arranged on one side of the cable winding box, a tension winding disc is rotatably arranged in the cable winding box, the tension winding disc is connected with the winding motor, and a winding steel rope is wound on the tension winding disc, and the winding control of the winding steel rope by the tension winding disc is realized through the winding motor. A protection combing assembly is vertically arranged at the lower end of one side of the cable winding box, the protection combing assembly comprises a treatment sleeve and an annular cavity disc, the winding steel rope penetrates through the treatment sleeve, an air supply pipe is arranged on one side of the annular cavity disc and penetrates through the cable winding box and the treatment sleeve, a lubricating assembly is connected on one side of the air supply pipe, the lubricating assembly is connected with the winding motor, the self-lubricating operation of the rotating winding motor is realized, and the lubricating assembly comprises a connecting air pipe, an oil storage box and a one-way oil pipe.

[0005] Preferably, the processing sleeve is arranged through the lower end of the cable winding box, the first support frame is horizontally arranged at the upper and lower ends of the processing sleeve, two guide wheels are rotatably arranged on the first support frame, and the winding steel rope is arranged between the two guide wheels on one side of the processing sleeve.

[0006] Preferably, the annular cavity disc is arranged on one side of the winding steel rope in the processing sleeve, the air source pipe is arranged in communication with the annular cavity disc, a plurality of first air holes are arranged in communication at the lower end of the annular cavity disc, and the plurality of first air holes are respectively inclined to the winding steel rope.

[0007] Preferably, the second support frame is horizontally arranged below the annular cavity disc in the processing sleeve, two brush rollers are rotatably arranged on the second support frame, the bristles on one side of the two brush rollers are respectively in contact with the two sides of the winding steel rope, a blowing pipe is arranged in communication on one side of the annular cavity disc away from the air source pipe, a second air hole is arranged in communication at the lower end of the blowing pipe, a blowing impeller is arranged in communication on one side of the two brush rollers and in the second support frame, and the second air hole is directed towards the blades of the two blowing impellers.

[0008] Preferably, the processing sleeve is arranged at the lower end outside the cable winding box, a buffer groove is arranged at the lower end of the processing sleeve, a buffer frame is arranged in the buffer groove, strip grooves are arranged on both sides of the processing sleeve close to the buffer frame, anti-dropping blocks are arranged in the strip grooves on one side of the buffer frame, a plurality of downward springs are arranged at the upper end of the buffer frame in the buffer groove, a cutting groove is arranged in vertical communication on one side of the buffer groove close to the air source pipe, the cutting groove is arranged in communication with the air source pipe, a cutting plate is vertically arranged on one side of the buffer frame in the cutting groove, and the width of the cutting plate is greater than the inner diameter of the air source pipe.

[0009] Preferably, the winding steel rope is arranged through the lower end of the processing sleeve, the lower end of the stop block is arranged with a cable connecting ring, when the cutting plate blocks the air source pipe, the upper end of the stop block extrudes the buffer frame to retract into the buffer groove.

[0010] Preferably, the cable winding box is arranged with a bearing mounting seat on one side close to the winding motor, the cable winding box is arranged with a driving main shaft on one side, the driving main shaft is arranged in the bearing mounting seat through two bearings, the driving main shaft is arranged in the cable winding box on one side, and the tension winding disc is arranged in the driving main shaft.

[0011] Preferably, the tension winding disc is arranged with a driving key groove on one side of the driving main shaft, the driving main shaft is arranged with a sensing key strip on one side of the driving key groove, the sensing key strip is arranged in the driving key groove, the cable winding box is arranged with a conductive slip ring on one side, the conductive slip ring is arranged in electrical connection with the driving main shaft, and the conductive slip ring is used for power supply of the sensing element in the sensing key strip.

[0012] Preferably, the adapter air pipe is arranged on the side of the air source pipe outside the cable winding box, the oil storage box is vertically arranged on the side of the cable winding box close to the adapter air pipe, the lower end of the oil storage box is provided with a combined mounting block, the adapter air pipe penetrates through the combined mounting block, a supplementary oil groove is arranged in the combined mounting block and communicates with the oil storage box, the one-way oil pipe is horizontally arranged on the side of the combined mounting block away from the air source pipe, the one-way oil pipe is in communication with the stop block on one side, and the position of the one-way oil pipe in communication with the adapter air pipe is closer to the air source pipe than the supplementary oil groove, and the supplementary oil groove is in communication with the one-way oil pipe on one side.

[0013] Preferably, a switching piston is horizontally movably arranged in the adapter air pipe on one side of the supplementary oil groove, a prismatic guide rod is arranged at the end of the switching piston away from the air source pipe, the prismatic guide rod penetrates through the adapter air pipe and is provided with a restraint block, a return spring is sleeved on one side of the prismatic guide rod in the adapter air pipe, a butt joint groove is vertically arranged on one side of the switching piston, the butt joint groove of the switching piston corresponds to the supplementary oil groove in the normal state, the switching piston blocks the one-way oil pipe, when the switching piston moves horizontally to the maximum extent towards the position of the prismatic guide rod, the switching piston is dislocated with the one-way oil pipe but blocks the supplementary oil groove, and the upper end of the bearing mounting seat is in communication with an oil mist hose, and one end of the oil mist hose is in communication with one end of the one-way oil pipe.

[0014] Compared with the prior art, the present application has the following beneficial effects: The device winds the winding steel rope through the tension winding disc driven by the winding motor, then fixes and connects the cable connected with the charging gun, when the charging gun is used, the operator pulls the winding steel rope after pulling out the charging gun head, the winding motor controls the tension winding disc to unwind the winding steel rope, and the cable can be moved to the vehicle by the operator, and vice versa, the cable is lifted by the winding steel rope, so that the loosening and wear of the connection position caused by repeated bending are avoided, in addition, in the use process, the rainwater and pollutants adhered to the surface of the winding steel rope can be treated through the protection combing assembly and the lubricating assembly, the rotation stability of the winding motor driven tension winding disc can be automatically maintained, the operation is convenient and safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present application; Figure 2 It is a cable winding box installation structural schematic diagram of the present application; Figure 3 It is a tension winding disc installation structural schematic diagram of the present application; Figure 4 It is a tension winding disc connection side sectional schematic diagram of the present application; Figure 5 It is a schematic diagram of A part of the present application; Figure 4 Figure 6 ​The schematic view of the connection side section in the processing sleeve of the application; Figure 7 The schematic view of the B part of the application; Figure 6 Figure 8 The schematic view of the C part of the application; Figure 7 Figure 9 The side section view of the connection structure of the lubricating assembly of the application; Figure 10 The schematic view of the D part of the application. Figure 9

[0016] In the figure: charging pile 1, top support 2, cable winding box 3, winding motor 4, tension winding disc 5, winding steel rope 6, processing sleeve 7, stop block 8, cable connection ring 9, guide wheel 11, annular cavity disc 12, first air hole 13, air source pipe 14, brush roll 15, blowing pipe 16, second air hole 17, blowing impeller 18, bearing mounting seat 19, driving main shaft 20, poking key groove 21, inductive key strip 22, conductive slip ring 23, buffer groove 24, buffer frame 25, strip-shaped groove 26, cutting-off plate 27, switching air pipe 28, oil storage box 29, combined mounting block 30, switching piston 31, prismatic guide rod 32, reset spring 33, one-way oil pipe 34, oil supplementing groove 35, butt joint groove 36, oil mist hose 37. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0018] Please refer to the accompanying drawings in the application, and the application provides the following technical solutions. Figures 1-10

[0019] ​​​​Embodiment one: a charging pile tension automatic winding cable mechanism, including a charging pile 1, the upper side of the charging pile 1 is provided with a top support 2, the both sides of the top support 2 are vertically provided with cable winding boxes 3, the one side of the cable winding box 3 is provided with winding motors 4, the cable winding box 3 is rotationally provided with tension winding discs 5, the tension winding disc 5 is connected with the winding motor 4, and the winding steel rope 6 is wound on the tension winding disc 5, the winding control of the winding steel rope 6 by the tension winding disc 5 is realized through the winding motor 4, the lower end of the winding steel rope 6 penetrating the processing sleeve 7 is provided with a stop block 8, the lower end of the stop block 8 is provided with a cable connecting ring 9, the distance between the two cable winding boxes 3 is greater than the width of the charging pile 1, the winding steel rope 6 is fixedly connected with the charging gun cable of the charging pile 1 through the cable connecting ring 9, when the operator uses the charging gun, the winding steel rope 6 is unwound, and vice versa, the cable connecting ring 9 and the charging gun cable connection position are in the middle part, which does not affect the charging gun head inserted on the charging pile 1, and when not in use, the cable is lifted by the winding steel rope 6.

[0020] The protection and carding assembly is arranged to protect and card the winding and unwinding of the winding steel rope 6, the protection and carding assembly is vertically arranged at the lower end of the one side of the cable winding box 3, the protection and carding assembly includes the processing sleeve 7 and the annular cavity disc 12, the winding steel rope 6 penetrates the processing sleeve 7, the annular cavity disc 12 is provided with an air source pipe 14 penetrating the cable winding box 3 and the processing sleeve 7 at one side, the lower end of the processing sleeve 7 penetrating the cable winding box 3 is arranged, the first support frame is horizontally arranged at the upper and lower ends of the processing sleeve 7, two guide wheels 11 are rotationally arranged on the first support frame, the winding steel rope 6 penetrates the processing sleeve 7 and is located between the two guide wheels 11, the two guide wheels 11 can constrain and guide the winding steel rope 6, so as to avoid excessive wear.

[0021] The annular cavity disc 12 is sleeved on one side of the steel rope 6 received in the processing sleeve 7, the air source pipe 14 is arranged in communication with the annular cavity disc 12, a plurality of first air holes 13 are arranged in communication at the lower end of the annular cavity disc 12, the plurality of first air holes 13 are respectively inclined to the steel rope 6, a second support frame is horizontally arranged below the annular cavity disc 12 in the processing sleeve 7, two brush rollers 15 are rotatably arranged on the second support frame, the brush on one side of the two brush rollers 15 respectively contacts the two sides of the steel rope 6, a blowing pipe 16 is arranged in communication on the side of the annular cavity disc 12 away from the air source pipe 14, a second air hole 17 is arranged in communication at the lower end of the blowing pipe 16, a blowing impeller 18 is sleeved and arranged on one side of the two brush rollers 15 through the second support frame, and the second air hole 17 faces the blades of the two blowing impellers 18. When the air source pipe 14 blows high-pressure gas to the annular cavity of the annular cavity disc 12, the high-pressure gas can be sprayed at high speed from the positions of the first air holes 13 and the second air holes 17, the airflow sprayed from the second air holes 17 blows the two blowing impellers 18 to drive the two brush rollers 15 to rotate, and the surface of the steel rope 6 is brushed and cleaned, so that the pollutants or rainwater on the surface of the steel rope 6 exposed outside is prevented from being brought into the cable winding box 3, the tension winding disc 5 is prevented from being polluted, and the use of the sensing element in the later period is prevented from being affected. During the period, the high-pressure airflow at the position of the first air holes 13 blows to the steel rope 6, and the pollutants or rainwater brushed on the surface of the steel rope 6 is blown downward.

[0022] The processing sleeve 7 is provided with a buffer groove 24 at the lower end outside the cable winding box 3, a buffer frame 25 is inserted and arranged in the buffer groove 24, strip-shaped grooves 26 are arranged on both sides of the processing sleeve 7 close to the buffer frame 25, anti-disengagement blocks are arranged in penetration on one side of the buffer frame 25 located in the strip-shaped grooves 26, a plurality of downward pressing springs are arranged at the upper end of the buffer frame 25 located in the buffer groove 24, a cutting groove is arranged in vertical communication on one side of the buffer groove 24 close to the air source pipe 14, the cutting groove is arranged in communication with the air source pipe 14, a cutting plate 27 is vertically arranged on one side of the buffer frame 25 located in the cutting groove, and the width of the cutting plate 27 is greater than the inner diameter of the air source pipe 14. When the cutting plate 27 blocks and cuts off the air source pipe 14, the upper end of the stop block 8 extrudes the buffer frame 25 to retract into the buffer groove 24, and the arrangement of the buffer frame 25 and the stop block 8 can limit the winding of the steel rope 6, and the contact between the stop block 8 and the buffer frame 25, the elastic arrangement of the buffer frame 25, and the direct collision between the stop block 8 and the processing sleeve 7 are avoided.

[0023] The cable winding box 3 is provided with a bearing mounting seat 19 on the side close to the winding motor 4. The cable winding box 3 is provided with a driving main shaft 20 on one side. The driving main shaft 20 penetrates and is inserted into the bearing mounting seat 19 through two bearings. The driving main shaft 20 is inserted into the cable winding box 3 on one side. The tension winding disc 5 is sleeved with the driving main shaft 20. The tension winding disc 5 is provided with a driving key groove 21 on the side sleeved with the driving main shaft 20. The driving main shaft 20 is provided with an inductive key strip 22 on the side located in the driving key groove 21. The inductive key strip 22 is inserted into the driving key groove 21. The cable winding box 3 is provided with a conductive slip ring 23 on one side. The conductive slip ring 23 is electrically connected with the driving main shaft 20. The conductive slip ring 23 is used for power supply of the inductive element in the inductive key strip 22. The inductive key strip 22 is provided with a tension tightness sensing module. When the driving main shaft 20 drives the rotation of the tension winding disc 5, the inductive module can accept the tension tightness of the tension winding disc 5. Through high-frequency extrusion induction, it can quickly distinguish whether the winding steel rope 6 is in winding or unwinding. Then the winding motor 4 controls the winding action of the tension winding disc 5.

[0024] In the embodiment one, on one side of the air source pipe 14, a lubricating assembly is connected. The lubricating assembly is connected with the winding motor 4. The lubricating assembly realizes self-lubricating operation of the winding motor 4 driven by rotation. The lubricating assembly includes a connecting air pipe 28, an oil storage box 29 and a one-way oil pipe 34. The connecting air pipe 28 is connected on the side of the air source pipe 14 located outside the cable winding box 3. The oil storage box 29 is vertically arranged on the side of the cable winding box 3 close to the connecting air pipe 28. The lower end of the oil storage box 29 is provided with a combined mounting block 30. The connecting air pipe 28 penetrates the combined mounting block 30. A supplement oil groove 35 is arranged in the combined mounting block 30 on one side penetrating the connecting air pipe 28 and being connected with the oil storage box 29. The one-way oil pipe 34 is horizontally arranged on the side of the combined mounting block 30 away from the air source pipe 14. One side of the one-way oil pipe 34 is connected with the stop block 8. The position of the connecting air pipe 34 connected with the one-way oil pipe 34 is closer to the air source pipe 14 than the supplement oil groove 35. One side of the supplement oil groove 35 is connected with the one-way oil pipe 34. After the buffer frame 25 is extruded and shrunk into the buffer groove 24 by the stop block 8, the cutoff plate 27 seals the air source pipe 14. At this time, the high-pressure airflow sent by the air source pipe 14 can enter the connecting air pipe 28.

[0025] The switching piston 31 is horizontally movably arranged in the transition air pipe 28 at one side of the oil supplement groove 35, and a prismatic guide rod 32 is arranged at the end of the switching piston 31 away from the air source pipe 14, the prismatic guide rod 32 penetrates the transition air pipe 28 and is provided with a restraint block, a return spring 33 is sleeved at one side of the prismatic guide rod 32 in the transition air pipe 28, a vertical butt joint groove 36 is arranged at one side of the switching piston 31, the butt joint groove 36 of the switching piston 31 corresponds to the oil supplement groove 35 in the normal state, the switching piston 31 seals the one-way oil pipe 34, when the switching piston 31 moves horizontally to the maximum position of the prismatic guide rod 32, the switching piston 31 is dislocated with the one-way oil pipe 34 but seals the oil supplement groove 35, the upper end of the bearing mounting seat 19 is connected and communicated with an oil mist hose 37, and one side of the oil mist hose 37 is communicated and inserted with one end of the one-way oil pipe 34, the airflow entering the transition air pipe 28 pushes the switching piston 31 to move to the position of the return spring 33, at this time, the switching piston 31 will not rotate under the action of the structure of the prismatic guide rod 32, at this time, the butt joint groove 36 is dislocated with the oil supplement groove 35, the transition air pipe 28 is connected with the one-way oil pipe 34, a one-way valve is arranged at one side of the one-way oil pipe 34 close to the oil supplement groove 35, the high-pressure airflow enters from the position of the one-way oil pipe 34, mixes with the lubricating oil stored in the one-way oil pipe 34, and then breaks through the one-way valve and is sent into the bearing mounting seat 19 from the oil mist hose 37, and lubricates the two bearings connected with the driving main shaft 20.

[0026] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A charging pile tension automatic cable rewinding mechanism, characterized in that, include: A charging pile (1) is provided with a top support (2) above it. Cable winding boxes (3) are vertically provided on both sides of the top support (2). A winding motor (4) is provided on one side of each cable winding box (3). A tension winding disc (5) is rotatably provided inside the cable winding box (3). The tension winding disc (5) is connected to the winding motor (4), and a winding steel rope (6) is wound on the tension winding disc (5). The winding control of the winding steel rope (6) by the tension winding disc (5) is realized through the winding motor (4). The protective combing assembly is vertically installed at the lower end of one side of the cable winding box (3). The protective combing assembly includes a processing sleeve (7) and an annular cavity disc (12). The winding steel rope (6) passes through the processing sleeve (7). An air source pipe (14) is provided on one side of the annular cavity disc (12) through the cable winding box (3) and the processing sleeve (7). A lubrication assembly is provided on one side of the air source pipe (14). The lubrication assembly is connected to the winding motor (4) to realize the self-lubricating operation of the winding motor (4) driving the rotation. The lubrication assembly includes a transfer air pipe (28), an oil storage box (29), and a one-way oil pipe (34).

2. The automatic tension rewinding cable mechanism for charging piles according to claim 1, characterized in that: The processing sleeve (7) is installed through the lower end of the cable winding box (3). The upper and lower ends of the processing sleeve (7) are horizontally provided with first support frames. Two guide wheels (11) are rotatably provided on the first support frames. The winding steel rope (6) passes through the processing sleeve (7) on one side between the two guide wheels (11).

3. The automatic tension rewinding cable mechanism for charging piles according to claim 2, characterized in that: The annular cavity disc (12) is used to receive the wound steel rope (6) on one side inside the processing sleeve (7). The air source pipe (14) is connected to the annular cavity disc (12). The lower end of the annular cavity disc (12) is connected to a number of first air holes (13), and the number of first air holes (13) are inclined towards the wound steel rope (6).

4. The automatic tension rewinding cable mechanism for charging piles according to claim 3, characterized in that: The processing sleeve (7) is provided with a second support frame horizontally below the annular cavity disk (12). Two brush rollers (15) are rotatably mounted on the second support frame. The brushes on one side of the two brush rollers (15) are in contact with the two sides of the winding steel rope (6). A blowing pipe (16) is connected to the side of the annular cavity disk (12) away from the air source pipe (14). A second air hole (17) is opened through the lower end of the blowing pipe (16). One side of the two brush rollers (15) is connected to the second support frame and a blowing impeller (18) is sleeved on it. The second air hole (17) faces the blades of the two blowing impellers (18).

5. The automatic tension rewinding cable mechanism for charging piles according to claim 4, characterized in that: The processing sleeve (7) is provided with a buffer groove (24) at the lower end outside the cable winding box (3). A buffer frame (25) is inserted into the buffer groove (24). A strip groove (26) is provided on both sides of the processing sleeve (7) near the buffer frame (25). An anti-detachment block is provided through one side of the buffer frame (25) in the strip groove (26). Several downward pressure springs are provided at the upper end of the buffer frame (25) in the buffer groove (24). A cutting groove is vertically connected to the side of the buffer groove (24) near the air source pipe (14). The cutting groove is connected to the air source pipe (14). A cutting plate (27) is vertically provided on one side of the buffer frame (25) in the cutting groove. The width of the cutting plate (27) is greater than the inner diameter of the air source pipe (14).

6. The automatic tension rewinding cable mechanism for charging piles according to claim 5, characterized in that: The lower end of the winding steel rope (6) through the processing sleeve (7) is provided with a stop block (8), and the lower end of the stop block (8) is provided with a cable connection ring (9). When the cutting plate (27) blocks and cuts off the air source pipe (14), the upper end of the stop block (8) squeezes the buffer frame (25) and retracts into the buffer groove (24).

7. The automatic tension rewinding cable mechanism for charging piles according to claim 6, characterized in that: The cable winding box (3) is provided with a bearing mounting seat (19) on the side near the winding motor (4), and a drive spindle (20) is provided on one side of the cable winding box (3). The drive spindle (20) passes through two bearings and is inserted into the bearing mounting seat (19). One side of the drive spindle (20) is inserted into the cable winding box (3). The tension winding reel (5) is sleeved on the drive spindle (20).

8. The automatic tension rewinding cable mechanism for charging piles according to claim 7, characterized in that: The tension winding reel (5) has a toggle keyway (21) on one side of the drive spindle (20). The drive spindle (20) has a sensing key bar (22) on one side of the toggle keyway (21). The sensing key bar (22) is inserted into the toggle keyway (21). A conductive slip ring (23) is provided on one side of the cable winding box (3). The conductive slip ring (23) is electrically connected to the drive spindle (20) and is used to power the sensing element in the sensing key bar (22).

9. The automatic tension rewinding cable mechanism for charging piles according to claim 8, characterized in that: The transfer air pipe (28) is connected to the side of the air source pipe (14) located outside the cable winding box (3). The oil storage box (29) is vertically located on the side of the cable winding box (3) close to the transfer air pipe (28). The lower end of the oil storage box (29) is provided with a combination mounting block (30). The transfer air pipe (28) is set through the combination mounting block (30). The transfer air pipe (28) is connected to the oil storage box (29) on one side of the combination mounting block (30). An oil replenishment groove (35) is opened. The one-way oil pipe (34) is horizontally located on the side of the combination mounting block (30) away from the air source pipe (14). One side of the one-way oil pipe (34) is connected to the stop block (8) of (3). The position of the one-way oil pipe (34) connected to the transfer air pipe (28) is closer to the air source pipe (14) than the oil replenishment groove (35). One side of the oil replenishment groove (35) is connected to the one-way oil pipe (34).

10. The automatic tension rewinding cable mechanism for charging piles according to claim 9, characterized in that: A switching piston (31) is horizontally movable on one side of the oil replenishment tank (35) inside the transfer air pipe (28). A prismatic guide rod (32) is provided at the end of the switching piston (31) away from the air source pipe (14). The prismatic guide rod (32) passes through the transfer air pipe (28) and is provided with a constraint block. A return spring (33) is sleeved on one side of the prismatic guide rod (32) inside the transfer air pipe (28). A docking groove (36) is vertically opened on one side of the switching piston (31). Under normal conditions, the switching piston ( The docking groove (36) of 31) corresponds to the oil replenishment groove (35). The switching piston (31) blocks the one-way oil pipe (34). When the switching piston (31) moves horizontally to the maximum position of the prism guide rod (32), the switching piston (31) and the one-way oil pipe (34) are misaligned but the oil replenishment groove (35) is blocked. The upper end of the bearing mounting seat (19) is connected to an oil mist hose (37), and one side of the oil mist hose (37) is connected to one end of the one-way oil pipe (34).

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