A charging pile with maintenance function

Abstract

The application belongs to the technical field of charging piles, and particularly discloses a charging pile with a maintenance function, which comprises a base, a shell and a shielding plate, opposite side walls of the shell are provided with charging and cooling assemblies, an outer wall of the shell is provided with a rotating pipe, an end of the rotating pipe is provided with a rotating arm, the two ends of the rotating pipe respectively penetrate through the side walls of the shell and the end of the rotating arm, the end of the rotating arm is provided with a guide wheel, an outer side wall of the rotating arm is provided with an array of fixing seats, a side wall of each fixing seat is provided with a through hole one, another end side wall of the outer side wall of the rotating arm is provided with a limiting guide assembly, and the limiting guide assembly is provided with a sliding seat. When charging, the application automatically opens the heat dissipation gap on the shell by using gas, blows the equipment in the shell to reduce the temperature, fixes the charging wire by the rotating arm, avoids the abrasion of the charging wire caused by drooping on the ground, and automatically alternately inflates the air bag one and the air bag two to realize the length adjustment of the charging wire.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of charging piles, and particularly relates to a charging pile with a maintenance function. BACKGROUND

[0002] Charging piles are mainly divided into floor type charging piles and wall-mounted charging piles, the input end of which is directly connected with an alternating current power grid, and the output end is provided with a charging plug for charging an electric vehicle. The floor type charging pile is generally installed in public buildings, shopping malls, public parking lots, residential parking lots or charging stations and the like.

[0003] When the charging pile is charging the electric vehicle, heat is generated inside the charging pile. Generally, a heat dissipation opening is arranged on the shell of the charging pile, and the heat dissipation opening is always in an open state. Dust, sundries and insects and rodents in the outside world can enter the charging pile, and the existing heat dissipation opening can only passively dissipate heat, and the heat dissipation effect is not good. The charging cable of the existing charging pile is relatively heavy, and when in use, part of the charging cable will be dragged to the ground, and abrasion will be caused in the process of dragging, and winding is prone to occur.

[0004] Therefore, a charging pile with a maintenance function is needed to solve the above problems. SUMMARY

[0005] In view of the above problems, the application provides a charging pile with a maintenance function. When charging, the gas automatically opens the heat dissipation gap on the shell, blows gas to cool the equipment in the shell, and the rotating arm fixes the charging cable to avoid abrasion caused by the charging cable being dragged to the ground. At the same time, the inflation of the air bag one and the air bag two is automatically alternated to realize the length adjustment of the charging cable.

[0006] The technical scheme adopted by the application is as follows: the application provides a charging pile with a maintenance function, which comprises a base, a shell and a shielding plate. The two opposite side walls of the shell are provided with a charging and cooling assembly. The outer wall of the shell is provided with a rotating pipe. The end of the rotating pipe is provided with a rotating arm. The two ends of the rotating pipe respectively penetrate the side wall of the shell and the end of the rotating arm. The end of the rotating arm is provided with a guide wheel. The outer side wall of the rotating arm is arrayed with a fixing seat. The side wall of the fixing seat is provided with a through hole one. The other end side wall of the outer side wall of the rotating arm is provided with a limiting guide assembly. The limiting guide assembly is provided with a sliding seat. The side wall of the sliding seat is provided with a through hole two. The rotating arm is provided with a wire harness length adjustment assembly. The wire harness length adjustment assembly is arranged between the sliding seat and the fixing seat. The outer wall of the shell is provided with an automatic on-off assembly. The shell in the upper wall of the base is provided with an automatic rope winder. The automatic rope winder winds the charging cable. The charging cable penetrates the rotating pipe, the through hole one and the through hole two. The charging cable passes through the guide wheel.

[0007] Further, the wire harness length adjusting assembly comprises a rotating shaft, a cam, a motor, a pressing ball, a spring four, a conversion cavity, an air bag one, an air bag two, a connecting pipe four and a connecting pipe five, the rotating shaft penetrates through the side wall of the rotating arm, the motor is arranged on the inner side wall of the rotating arm, the motor is connected with the rotating shaft, the cam is arranged on the rotating shaft, the cam is arranged on the outer side of the rotating arm, the conversion cavity is a hollow cavity structure with a circular arc cross section, the outer wall of the conversion cavity is provided with an upper notch and a lower notch, the outer side wall of the rotating arm is provided with a sliding groove, the sliding groove is the same as the shape of the conversion cavity, the central axis of the sliding groove coincides with the center line of the rotating shaft, the spring four is arranged on the inner bottom wall of the sliding groove, the conversion cavity is slidingly arranged in the sliding groove, the conversion cavity is arranged at the end of the spring four, the pressing ball is fixed on the lower wall of the cam, the pressing ball is located on the extension line of the connecting line between the farthest point of the cam and the rotation center of the cam, the air bag one is arranged in the through hole one, the air bag two is arranged in the through hole two, one end of the connecting pipe four penetrates through the outer wall of the rotating arm and communicates with the sliding groove, the other end of the connecting pipe four is arranged on the fixed seat and communicates with the air bag one, one end of the connecting pipe five penetrates through the outer wall of the rotating arm and communicates with the sliding groove, the other end of the connecting pipe five is arranged on the sliding seat and communicates with the air bag two.

[0008] Further, the charging and cooling assembly comprises a fixed pipe, a support pipe, a spring one and a plugging frame, the two symmetrical side walls of the shell are provided with heat dissipation slots, the plugging frame is arranged in the heat dissipation slot, the plugging frame is composed of a plugging rod and a limiting pipe, the limiting pipe is arranged at both ends of the plugging rod, the fixed pipe is symmetrically arranged on the inner side wall of the shell, the support pipe is arranged on the two side walls of the fixed pipe, the support pipe corresponds to the heat dissipation slot one by one, the support pipe is slidingly arranged in the limiting pipe, the spring one is sleeved on the support pipe, and the two ends of the spring one are arranged on the end of the limiting pipe and the fixed pipe respectively.

[0009] Further, the automatic on-off assembly comprises a fixed block, a connecting shaft, a clamping plate and a spring two, the fixed block is arranged on the outer side wall of the shell, the fixed block is provided with a center hole, the spring two is arranged on the inner bottom wall of the center hole, the connecting shaft is slidingly arranged in the center hole, the inner end of the connecting shaft is arranged at the end of the spring two, the clamping plate is arranged on the outer end of the connecting shaft, and the clamping plate is provided with a clamping groove.

[0010] Further, the fixed pipe and the center hole of the fixed block are connected through the connecting pipe one.

[0011] Further, the limiting guide assembly comprises a guide rod, a fixed plate and a spring three, the fixed plate is arranged on the outer side wall of the end of the rotating arm, the two ends of the guide rod are arranged on the fixed seat and the fixed plate respectively, the sliding seat is slidingly arranged on the guide rod, the sliding seat slides on the outer side wall of the rotating arm, the spring three is sleeved on the guide rod, and the two ends of the spring three are arranged on the sliding seat and the fixed plate respectively.

[0012] Further, the inner side wall of the rotating arm is provided with an air pump, an air outlet pipe of the air pump is provided with an air connection head, the air connection head is connected with the center hole of the fixed block through a connecting pipe two, and the air connection head is connected with the upper end of the conversion cavity through a connecting pipe three.

[0013] Further, when the pressure ball presses the conversion cavity, the lower notch of the conversion cavity is disconnected with the connecting pipe four, and the upper notch of the conversion cavity is connected with the connecting pipe five; when the pressure ball is separated from the conversion cavity, the connecting pipe four is connected with the lower notch, and the connecting pipe five is disconnected with the upper notch.

[0014] Further, the lower wall of the upper fixed pipe and the upper wall of the lower fixed pipe are provided with air holes along the axial direction.

[0015] The beneficial effects obtained by the application with the above structure are as follows:

[0016] 1. When charging is needed, the card plate is pressed downward, and the rotating arm is rotated downward, at this time, the spring three pushes the connecting shaft upward, the connecting pipe one and the connecting pipe two are connected with the center hole, the gas in the air pump enters the connecting pipe two, and then enters the center hole, and then enters the connecting pipe one, the fixed pipe, the supporting pipe and the limiting pipe, on the one hand, the gas pushes the limiting pipe and the plugging rod outward, so that the heat dissipation gap is opened, and on the other hand, the gas is sprayed out of the air holes on the fixed pipe, blows the equipment in the shell, and blows out the heat generated in the shell;

[0017] 2. The gas enters the conversion cavity, when the length of the charging wire needs to be adjusted, the motor is started, the motor drives the rotating shaft and the cam to rotate, when the cam pushes the sliding seat outward, the pressure ball on the lower side of the cam is just rotated to the upper end surface of the conversion cavity, the pressure ball presses the conversion cavity downward, at this time, the air bag two is inflated, the sliding seat and the charging wire are fixed together, the air bag one is not inflated, the fixed seat and the charging wire are in a separated state, the sliding seat drives the charging wire to move forward, when the cam is separated from the sliding seat, the pressure ball on the lower side of the cam is just separated from the upper end surface of the conversion cavity, the spring four pushes the conversion cavity upward, at this time, the air bag one is inflated, the fixed seat and the charging wire are fixed together, the air bag two is not inflated, the sliding seat and the charging wire are in a separated state, and the spring three is elongated to push the sliding seat to move, in the process of rotating the cam, the above operation is repeated, so that the length of the charging wire can be freely adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure diagram of the charging pile with the maintenance function is provided.

[0019] Figure 2 An internal structure diagram of the charging pile with the maintenance function is provided.

[0020] Figure 3 For Figure 1 the top view;

[0021] Figure 4 For the three-dimensional structure of the cooling assembly;

[0022] Figure 5 For the three-dimensional structure of the rotating arm, wire harness length adjusting assembly, limiting guide assembly, fixed seat and sliding seat;

[0023] Figure 6 For the three-dimensional structure of the conversion cavity;

[0024] Figure 7 For the internal structure diagram of the automatic on-off assembly;

[0025] Figure 8 For the internal structure diagram of the fixed seat and sliding seat;

[0026] Figure 9 For the position relationship diagram of the ball and cam;

[0027] Figure 10 For Figure 3 the A part of the enlarged view;

[0028] Figure 11 For Figure 1 the B part of the enlarged view;

[0029] Figure 12 For Figure 5 the C part of the enlarged view.

[0030] 1, base, 2, shell, 3, shielding plate, 4, charging cooling assembly, 5, rotating pipe, 6, rotating arm, 7, guide wheel, 8, fixed seat, 9, through hole one, 10, limiting guide assembly, 11, sliding seat, 12, through hole two, 13, wire harness length adjusting assembly, 14, automatic on-off assembly, 15, automatic rope winder, 16, charging wire, 17, rotating shaft, 18, cam, 19, motor, 20, ball, 21, spring four, 22, conversion cavity, 23, air bag one, 24, air bag two, 25, connecting pipe four, 26, connecting pipe five, 27, upper notch, 28, lower notch, 29, sliding groove, 30, fixed pipe, 31, support pipe, 32, spring one, 33, plugging frame, 34, heat dissipation gap, 35, plugging rod, 36, limiting pipe, 37, fixed block, 38, connecting shaft, 39, clamping plate, 40, spring two, 41, center hole, 42, guide rod, 43, fixed plate, 44, spring three, 45, air pump, 46, gas connector, 47, air hole, 48, clamping groove, 49, connecting pipe one, 50, connecting pipe two, 51, connecting pipe three.

[0031] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of the specification, illustrate embodiments of the application and are used to explain the application, but are not intended to limit the application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the 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 efforts belong to the protection scope of the application.

[0033] In the description of the application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0034] As shown in Figure 1 , Figure 2 , Figure 5 , Figure 8 , the application provides a charging pile with maintenance function, which comprises a base 1, a shell 2 and a shielding plate 3, two opposite side walls of the shell 2 are provided with a charging and cooling assembly 4, an outer wall of the shell 2 is provided with a rotating pipe 5, an end of the rotating pipe 5 is provided with a rotating arm 6, two ends of the rotating pipe 5 respectively penetrate the side wall of the shell 2 and the end of the rotating arm 6, the end of the rotating arm 6 is provided with a guide wheel 7, the outer side wall of the rotating arm 6 is arrayed with a fixed seat 8, the side wall of the fixed seat 8 is provided with a through hole one 9, the other end side wall of the outer side wall of the rotating arm 6 is provided with a limiting guide assembly 10, the limiting guide assembly 10 is provided with a sliding seat 11, the side wall of the sliding seat 11 is provided with a through hole two 12, the rotating arm 6 is provided with a wire harness length adjusting assembly 13, the wire harness length adjusting assembly 13 is arranged between the sliding seat 11 and the fixed seat 8, the outer wall of the shell 2 is provided with an automatic on-off assembly 14, the shell 2 in the upper wall of the base 1 is provided with an automatic rope winding device 15, the automatic rope winding device 15 winds a charging wire 16, the charging wire 16 penetrates the rotating pipe 5, the through hole one 9 and the through hole two 12, and the charging wire 16 passes around the guide wheel 7.

[0035] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 9 , Figure 12As shown, the wire harness length adjusting assembly 13 includes a rotating shaft 17, a cam 18, a motor 19, a pressure ball 20, a spring four 21, a conversion cavity 22, an air bag one 23, an air bag two 24, a connecting tube four 25 and a connecting tube five 26, the rotating shaft 17 penetrates the side wall of the rotating arm 6, the motor 19 is arranged on the inner side wall of the rotating arm 6, the motor 19 is connected with the rotating shaft 17, the cam 18 is arranged on the rotating shaft 17, the cam 18 is arranged on the outer side of the rotating arm 6, the conversion cavity 22 is a hollow cavity structure with circular arc cross section, the outer wall of the conversion cavity 22 is provided with an upper notch 27 and a lower notch 28, the outer side wall of the rotating arm 6 is provided with a sliding groove 29, the sliding groove 29 has the same shape as the conversion cavity 22, the central axis of the sliding groove 29 coincides with the center line of the rotating shaft 17, the spring four 21 is arranged on the inner bottom wall of the sliding groove 29, the conversion cavity 22 is slidingly arranged in the sliding groove 29, the conversion cavity 22 is arranged at the end of the spring four 21, the pressure ball 20 is fixed on the lower wall of the cam 18, the pressure ball 20 is located on the extension line of the line connecting the farthest point of the cam 18 and the rotation center of the cam 18, the air bag one 23 is arranged in the through hole one 9, the air bag two 24 is arranged in the through hole two 12, one end of the connecting tube four 25 penetrates the outer wall of the rotating arm 6 and communicates with the sliding groove 29, the other end of the connecting tube four 25 is arranged on the fixed seat 8 and communicates with the air bag one 23, one end of the connecting tube five 26 penetrates the outer wall of the rotating arm 6 and communicates with the sliding groove 29, the other end of the connecting tube five 26 is arranged on the sliding seat 11 and communicates with the air bag two 24.

[0036] As shown in Figure 1 , Figure 2 , Figure 4 As shown, the charging and cooling assembly 4 includes a fixed tube 30, a support tube 31, a spring one 32 and a plugging frame 33, the two symmetrical side walls of the shell 2 are provided with heat dissipation slots 34, the plugging frame 33 is arranged in the heat dissipation slot 34, the plugging frame 33 is composed of a plugging rod 35 and a limiting tube 36, the limiting tube 36 is arranged at both ends of the plugging rod 35, the fixed tube 30 is symmetrically arranged on the inner side wall of the shell 2, the support tube 31 is arrayed on the two side walls of the fixed tube 30, the support tube 31 corresponds to the heat dissipation slot 34 one by one, the support tube 31 is slidingly arranged in the limiting tube 36, the spring one 32 is sleeved on the support tube 31, and the two ends of the spring one 32 are arranged on the end of the limiting tube 36 and the fixed tube 30 respectively.

[0037] As shown in Figure 1 , Figure 7 , Figure 11As shown, the automatic on-off assembly 14 includes a fixed block 37, a connecting shaft 38, a clamping plate 39 and a spring 40, the fixed block 37 is arranged on the outer side wall of the shell 2, the fixed block 37 is provided with a center hole 41, the spring 40 is arranged on the inner bottom wall of the center hole 41, the connecting shaft 38 is slidingly arranged in the center hole 41, the inner end of the connecting shaft 38 is arranged at the end of the spring 40, the clamping plate 39 is arranged on the outer end of the connecting shaft 38, and the clamping plate 39 is provided with a clamping groove 48.

[0038] As shown in Figure 1 , Figure 7 , Figure 11 As shown, the fixed tube 30 and the center hole 41 of the fixed block 37 are connected through the connecting tube 49.

[0039] As shown in Figure 1 , Figure 3 , Figure 5 , Figure 10 As shown, the limiting guide assembly 10 includes a guide rod 42, a fixed plate 43 and a spring 44, the fixed plate 43 is arranged on the outer side wall of the end of the rotating arm 6, the two ends of the guide rod 42 are arranged on the fixed seat 8 and the fixed plate 43 respectively, the sliding seat 11 is slidingly arranged on the guide rod 42, the sliding seat 11 slides on the outer side wall of the rotating arm 6, and the spring 44 is sleeved on the guide rod 42, and the two ends of the spring 44 are arranged on the sliding seat 11 and the fixed plate 43 respectively.

[0040] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 10 , Figure 12 As shown, the inner side wall of the rotating arm 6 is provided with a gas pump 45, the gas outlet pipe of the gas pump 45 is provided with a gas connection head 46, the gas connection head 46 is connected with the center hole 41 of the fixed block 37 through the connecting tube 50, and the gas connection head 46 is connected with the upper end of the conversion cavity 22 through the connecting tube 51.

[0041] As shown in Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 10 , Figure 12 As shown, when the pressing ball 20 presses the conversion cavity 22, the lower notch 28 of the conversion cavity 22 is disconnected with the connecting tube 25, and the upper notch 27 of the conversion cavity 22 is connected with the connecting tube 26, when the pressing ball 20 is separated from the conversion cavity 22, the connecting tube 25 is connected with the lower notch 28, and the connecting tube 26 is disconnected with the upper notch 27.

[0042] As shown in Figure 2 , Figure 4As shown, the lower wall of the upper fixing tube 30 and the upper wall of the lower fixing tube 30 are provided with air holes 47 along the axial direction.

[0043] In use, in the initial state, the rotating arm 6 is in the vertical state, the rotating arm 6 is clamped in the clamping opening of the clamping plate 39, at this time the rotating arm 6 presses down the clamping plate 39, the clamping plate 39 presses down the connecting shaft 38, the connecting shaft 38 presses down the second spring 40, at this time the connecting shaft 38 blocks the first connecting tube 49 and the second connecting tube 50;

[0044] When charging is needed, press down the clamping plate 39, then rotate the rotating arm 6 downward, at this time the second spring 40 pushes up the connecting shaft 38, the first connecting tube 49 and the second connecting tube 50 are communicated with the center hole 41, then open the air pump 45, the gas in the air pump 45 enters into the second connecting tube 50, then enters into the center hole 41, then enters into the first connecting tube 49 through the center hole 41, then enters into the fixing tube 30 through the first connecting tube 49, then enters into the supporting tube 31 through the fixing tube 30, then enters into the limiting tube 36, the gas pushes out the limiting tube 36 and the blocking rod 35, at this time the gas is sprayed from the air holes 47 on the fixing tube 30, the equipment in the shell 2 is blown and cooled, and the generated heat is blown out from the shell 2;

[0045] At the same time, the gas in the air pump 45 enters the connecting pipe three 51, and then enters the conversion cavity 22. When it is necessary to adjust the length of the charging line 16, the motor 19 is turned on, the motor 19 drives the rotating shaft 17 to rotate, the rotating shaft 17 drives the cam 18 to rotate, when the cam 18 rotates to push the sliding seat 11 outward, the pressure ball 20 at the lower side of the cam 18 just rotates to the upper end face of the conversion cavity 22, the pressure ball 20 presses downward the conversion cavity 22, the lower notch 28 of the conversion cavity 22 is disconnected with the connecting pipe four 25, and the upper notch 27 of the conversion cavity 22 is communicated with the connecting pipe five 26. At this time, the air bag two 24 in the through hole two 12 of the sliding seat 11 inflates and expands, the air bag two 24 fixes the sliding seat 11 and the charging line 16 together, the air bag one 23 in the through hole one 12 of the fixed seat 8 does not inflate, the fixed seat 8 and the charging line 16 are in a separated state, the sliding seat 11 drives the charging line 16 to move forward, at this time, the sliding seat 11 compresses the spring three 44, when the cam 18 rotates to separate from the sliding seat 11, the pressure ball 20 at the lower side of the cam 18 just rotates to separate from the upper end face of the conversion cavity 22, the spring four 21 pops up the conversion cavity 22 upward, the lower notch 28 of the conversion cavity 22 is communicated with the connecting pipe four 25, and the upper notch 27 of the conversion cavity 22 is disconnected with the connecting pipe five 26. At this time, the air bag one 23 in the through hole one 9 of the fixed seat 8 inflates, the fixed seat 8 and the charging line 16 are fixed together, the air bag two 24 in the through hole two 12 of the sliding seat 11 does not inflate, the sliding seat 11 and the charging line 16 are in a separated state, the spring three 44 is elongated and pushes the sliding seat 11 to move. In the process of rotating the cam 18, the above operation is repeated, so as to adjust the length of the charging line 16. After adjusting the appropriate length, when the cam 18 is separated from the sliding seat 11, the motor 19 is turned off. At this time, the fixed seat 8 and the charging line 16 are fixed together, and the length of the charging line 16 is fixed;

[0046] After the charging is completed, the air pump 45 is turned off, the air pump 45 no longer inflates the air bag one 23, and the fixed seat 8 and the charging line 16 are in a separated state. Under the action of the automatic rope winding device 15, the charging line 16 is wound. At the same time, the air pump 45 no longer inflates the connecting pipe two 50 and the connecting pipe one 49, the spring one 32 pulls the limiting pipe 36 inward, the limiting pipe 36 pulls the plugging rod 35, the plugging rod 35 plugs the heat dissipation gap 34, then the rotating arm 6 is rotated upward and the clamping plate 39 is pressed downward, and the rotating arm 6 is clamped in the clamping port of the clamping plate 39.

[0047] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, since the scope of the present application will be limited to the appended claims. It will be understood that where the application is defined by a plurality of separate claims, each of the claims can be combined with any of the other claims.

[0048] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application.

[0049] The above description of the application and its embodiments is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the application, without creative design, similar structure and embodiments of the technical solution, which should belong to the protection scope of the application.

Claims

1. A charging pile with maintenance function, comprising a base (1), a shell (2) and a shielding plate (3), characterized in that: Two opposite side walls of the shell (2) are provided with a charging and cooling assembly (4), an outer wall of the shell (2) is provided with a rotating pipe (5), an end of the rotating pipe (5) is provided with a rotating arm (6), two ends of the rotating pipe (5) respectively penetrate the side wall of the shell (2) and the end of the rotating arm (6), the end of the rotating arm (6) is provided with a guide wheel (7), an outer side wall of the rotating arm (6) is arrayed with a fixing seat (8), a side wall of the fixing seat (8) is provided with a through hole one (9), another end side wall of the outer side wall of the rotating arm (6) is provided with a limiting guide assembly (10), the limiting guide assembly (10) is provided with a sliding seat (11), a side wall of the sliding seat (11) is provided with a through hole two (12), the rotating arm (6) is provided with a wire harness length adjusting assembly (13), the wire harness length adjusting assembly (13) is arranged between the sliding seat (11) and the fixing seat (8), an outer wall of the shell (2) is provided with an automatic on-off assembly (14), the shell (2) in the upper wall of the base (1) is provided with an automatic rope winding device (15), the automatic rope winding device (15) winds a charging wire (16), the charging wire (16) penetrates the rotating pipe (5), the through hole one (9) and the through hole two (12), the charging wire (16) passes around the guide wheel (7); The wire harness length adjusting assembly (13) comprises a rotating shaft (17), a cam (18), a motor (19), a pressure ball (20), a spring four (21), a conversion cavity (22), an air bag one (23), an air bag two (24), a connecting pipe four (25) and a connecting pipe five (26), the rotating shaft (17) penetrates through the side wall of the rotating arm (6), the motor (19) is arranged on the inner side wall of the rotating arm (6), the motor (19) is connected with the rotating shaft (17), the cam (18) is arranged on the rotating shaft (17), the cam (18) is arranged on the outer side of the rotating arm (6), the conversion cavity (22) is a hollow cavity structure with a circular arc cross section, the outer wall of the conversion cavity (22) is provided with an upper notch (27) and a lower notch (28), the outer side wall of the rotating arm (6) is provided with a sliding groove (29), the sliding groove (29) is the same as the shape of the conversion cavity (22), the central axis of the sliding groove (29) coincides with the center line of the rotating shaft (17), the spring four (21) is arranged on the inner bottom wall of the sliding groove (29), the conversion cavity (22) is slidably arranged in the sliding groove (29), the conversion cavity (22) is arranged at the end of the spring four (21), the pressure ball (20) is fixed on the lower wall of the cam (18), the pressure ball (20) is located on the extension line of the connecting line of the farthest point of the cam (18) and the rotation center of the cam (18), the air bag one (23) is arranged in the through hole one (9), the air bag two (24) is arranged in the through hole two (12), one end of the connecting pipe four (25) penetrates through the outer wall of the rotating arm (6) and is connected with the sliding groove (29), the other end of the connecting pipe four (25) is arranged on the fixed seat (8) and is connected with the air bag one (23), one end of the connecting pipe five (26) penetrates through the outer wall of the rotating arm (6) and is connected with the sliding groove (29), the other end of the connecting pipe five (26) is arranged on the sliding seat (11) and is connected with the air bag two (24); The charging and cooling assembly (4) comprises a fixed pipe (30), a support pipe (31), a spring one (32) and a plugging frame (33), the two symmetrical side walls of the shell (2) are provided with heat dissipation slots (34), the plugging frame (33) is arranged in the heat dissipation slot (34), the plugging frame (33) is composed of a plugging rod (35) and a limiting pipe (36), the limiting pipe (36) is arranged at the two ends of the plugging rod (35), the fixed pipe (30) is symmetrically arranged on the inner side wall of the shell (2), the support pipe (31) is arrayed on the two side walls of the fixed pipe (30), the support pipe (31) corresponds to the heat dissipation slot (34) one by one, the support pipe (31) is slidably arranged in the limiting pipe (36), the spring one (32) is sleeved on the support pipe (31), and the two ends of the spring one (32) are arranged on the end of the limiting pipe (36) and the fixed pipe (30) respectively. The automatic on-off assembly (14) comprises a fixed block (37), a connecting shaft (38), a clamping plate (39) and a spring (40), the fixed block (37) is arranged on the outer side wall of the shell (2), the fixed block (37) is provided with a center hole (41), the spring (40) is arranged on the inner bottom wall of the center hole (41), the connecting shaft (38) is slidably arranged in the center hole (41), the inner end of the connecting shaft (38) is arranged at the end of the spring (40), the clamping plate (39) is arranged on the outer end of the connecting shaft (38), and the clamping plate (39) is provided with a clamping groove (48).

2. The charging pile with maintenance function according to claim 1, characterized in that: The fixed pipe (30) and the center hole (41) of the fixed block (37) are connected through the connecting pipe (49).

3. The charging pile with maintenance function according to claim 2, characterized in that: The limiting guide assembly (10) comprises a guide rod (42), a fixed plate (43) and a spring (44), the fixed plate (43) is arranged on the outer side wall of the end of the rotating arm (6), the both ends of the guide rod (42) are arranged on the fixed seat (8) and the fixed plate (43) respectively, the sliding seat (11) is slidably arranged on the guide rod (42), the sliding seat (11) slides on the outer side wall of the rotating arm (6), the spring (44) is sleeved on the guide rod (42), and the both ends of the spring (44) are arranged on the sliding seat (11) and the fixed plate (43) respectively.

4. The charging pile with maintenance function according to claim 3, characterized in that: The inner side wall of the rotating arm (6) is provided with an air pump (45), the air outlet pipe of the air pump (45) is provided with a gas connector (46), the gas connector (46) is connected with the center hole (41) of the fixed block (37) through the connecting pipe (50), and the gas connector (46) is connected with the upper end of the conversion cavity (22) through the connecting pipe (51).

5. The charging pile with maintenance function according to claim 4, characterized in that: When the pressing ball (20) presses the conversion cavity (22), the lower notch (28) of the conversion cavity (22) is disconnected with the connecting pipe (25), the upper notch (27) of the conversion cavity (22) is connected with the connecting pipe (26), when the pressing ball (20) is separated from the conversion cavity (22), the connecting pipe (25) is connected with the lower notch (28), and the connecting pipe (26) is disconnected with the upper notch (27).

6. The charging pile with maintenance function according to claim 5, characterized in that: The lower wall of the upper fixed pipe (30) and the upper wall of the lower fixed pipe (30) are arranged with air holes (47) along the axial direction.

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