阅读说明：本技术 一种方便维护的电动汽车用充电桩 (Electric automobile that conveniently maintains is with filling electric pile ) 是由 郭平 于 2019-12-13 设计创作，主要内容包括：本发明属于电动汽车充电桩配件机械技术领域,具体涉及一种方便维护的电动汽车用充电桩,包括桩体,桩体内设有立式隔板、左隔板和右隔板,立式隔板上设有限位电机和驱动电机,限位电机通过限位轴连接限位件；驱动电机通过驱动轴驱动左滑块和右滑块,左隔板和右隔板之间设有绕线筒；电缆卷绕于绕线筒上,穿过限位件后由通线孔穿出,通过接线件连接充电枪。本发明相比现有技术具有以下优点：通过合理设置使左滑块和右滑块同时由驱动电机驱动,在非卷线状态时实现对绕线筒的限位控制,避免绕线筒反转使绕线松动；限位件对电缆起到引导作用；整体装置结构设置合理,方便拆卸维护。(The invention belongs to the technical field of electric automobile charging pile accessory machinery, and particularly relates to a conveniently maintained electric automobile charging pile, which comprises a pile body, wherein a vertical partition plate, a left partition plate and a right partition plate are arranged in the pile body, a limiting motor and a driving motor are arranged on the vertical partition plate, and the limiting motor is connected with a limiting part through a limiting shaft; the driving motor drives the left sliding block and the right sliding block through the driving shaft, and a bobbin is arranged between the left partition plate and the right partition plate; the cable is wound on the bobbin, penetrates out of the through hole after penetrating through the limiting part, and is connected with the charging gun through the wiring piece. Compared with the prior art, the invention has the following advantages: the left sliding block and the right sliding block are driven by the driving motor simultaneously through reasonable arrangement, so that the limiting control of the bobbin is realized in a non-winding state, and the winding looseness caused by the reverse rotation of the bobbin is avoided; the limiting piece plays a role in guiding the cable; the integral device is reasonable in structure arrangement and convenient to detach and maintain.)

1. A convenient-to-maintain charging pile for an electric automobile comprises a pile body and is characterized in that a vertical partition plate is arranged in the pile body, a limiting motor is arranged at the position, close to the upper position, of one side of the vertical partition plate, the limiting motor is connected with a limiting shaft through the vertical partition plate, the limiting shaft is a threaded rod, and a limiting part in rotary connection with the limiting shaft is arranged on the limiting shaft; two symmetrically arranged driving motors are arranged below one side of the vertical partition plate, and the driving motors are connected with a driving shaft through the vertical partition plate; a left partition plate and a right partition plate which are connected with the front wall and the rear wall in the pile body are arranged on the right side of the vertical partition plate, a bobbin is arranged between the left partition plate and the right partition plate, baffles are arranged on two sides of the bobbin, a cable is wound on the bobbin between the baffles, the left end of the bobbin is rotatably connected with the left partition plate through a left connecting piece, the right end of the bobbin is rotatably connected with the right partition plate through a right connecting piece, a left sliding block is in threaded connection with a driving shaft between the vertical partition plate and the left partition plate, a winding motor is arranged on the left sliding block, a spline shaft is arranged on the right side of the winding motor, and a spline groove matched with the spline shaft is; a right sliding block is screwed on the driving shaft on the right side of the right partition plate, a clamping bulge is arranged on the left side of the right sliding block, and a clamping groove matched with the clamping bulge is arranged on the right side of the right connecting piece corresponding to the position of the clamping bulge;

a through hole matched with the limiting shaft is formed in the upper side of the limiting part, an inverted U-shaped groove is formed in the lower side of the limiting part, a pulley is connected between the inverted U-shaped grooves through a rotating shaft, and an arc-shaped groove is formed in the middle of the pulley; one end of the cable is connected with a mains supply and is fixed on the winding drum, and the other end of the cable penetrates through the upper part of the pulley from bottom to top and is embedded in the arc-shaped groove;

a detachable column-shaped cover body is arranged on the right side wall of the pile body corresponding to the height of the pulley, and a through line hole is formed in the center of the column-shaped cover body;

still including the rifle that charges, the rifle front end that charges is equipped with the head that charges, the downside of the rifle that charges be equipped with the slope setting the portion of gripping and with the spacing framework of the complex of the portion of gripping, the portion of gripping bottom is equipped with the wiring piece, the cable of stretching out in the pile body is connected to wiring piece bottom, and it is protruding that wiring piece top is equipped with the columnar order, and the protruding outside of columnar order is equipped with the external screw thread, and the portion of gripping bottom is equipped with the columnar order recess that matches with the columnar order arch, is equipped with the electricity connection piece in the columnar order recess, and the position that the columnar order arch corresponds the electricity connection.

2. The electric charging pile for the electric vehicle convenient to maintain as claimed in claim 1, wherein the column-shaped cover body is composed of an upper part and a lower part which are hinged with each other, a fixing part is arranged on the outer side surface of the column-shaped cover body for connecting the upper part and the lower part, and a handle is arranged on the outer side surface; the side wall of the column-shaped cover body is provided with connecting threads for spirally fixing the column-shaped cover body and the side wall of the pile body.

3. The charging pile convenient to maintain for the electric automobile according to claim 2, wherein a left spherical groove is arranged on the left side of the through hole, and a right spherical groove is arranged on the right side of the through hole; an outer limiting ball matched with the right spherical groove is arranged on one side, close to the charging gun, of the cable, and an inner limiting ball is arranged at a position, close to one end connected with mains supply, of the cable;

the diameters of the right spherical groove and the left spherical groove are larger than the diameter of the through hole.

4. The charging pile convenient to maintain for the electric automobile as claimed in claim 3, wherein a first abutting inductor is arranged in the spline groove, and a second abutting inductor is arranged in the clamping groove; and a third butting inductor is arranged in the left spherical groove, and a fourth butting inductor is arranged in the right spherical groove.

5. The charging pile convenient to maintain for the electric automobile as recited in claim 4, further comprising a control device, wherein the control device is used for receiving real-time signals of the first proximity sensor, the second proximity sensor, the third proximity sensor and the fourth proximity sensor and controlling the working states of the limit motor, the driving motor and the winding motor; the device also comprises a start paying-off switch, a stop paying-off switch, a start take-up switch and a stop take-up switch.

6. The electric charging pile for the electric automobile convenient to maintain as claimed in claim 5, wherein in the initial state, the clamping protrusion of the right slide block is arranged in the clamping groove; when the control device detects a signal sent by a pay-off switch, the driving motor enables the driving shaft to rotate, the left sliding block and the right sliding block move rightwards under the action of the driving shaft until the spline shaft is positioned in the spline groove, the spline groove extrudes the first abutting inductor, the control device receives the signal of the first abutting inductor, the driving motor stops working, the winding motor and the limiting motor simultaneously work, and winding is started; when the paying-off switch stops sending a signal or the third abutting sensor is extruded by the inner limiting ball, the winding motor and the limiting motor stop working, the driving motor rotates reversely, the left sliding block and the right sliding block move leftwards under the action of the driving shaft until the clamping protrusion is arranged in the clamping groove, the clamping protrusion extrudes the second abutting sensor, and the control device receives the signal of the second abutting sensor and stops working;

when the wire is required to be wound, a wire winding starting switch is started, the driving motor enables the driving shaft to rotate, the left sliding block and the right sliding block move rightwards under the action of the driving shaft until the spline shaft is positioned in the spline groove, the spline groove extrudes the first abutting inductor, the control device receives a signal of the first abutting inductor, the driving motor stops working, the wire winding motor and the limiting motor simultaneously work, and the wire winding is started, wherein the wire winding motor is in a reverse state relative to the wire unwinding; when the wire take-up switch stops sending a signal or the abutting sensor is extruded by the outer limiting ball, the driving motor and the limiting motor stop working, the driving motor rotates reversely, the left sliding block and the right sliding block move leftwards under the action of the driving shaft until the clamping protrusion is arranged in the clamping groove, the clamping protrusion extrudes the abutting sensor II, the control device receives the signal of the abutting sensor II, and the driving motor stops working.

7. The charging pile for the electric automobile convenient to maintain as claimed in claim 6, wherein the rotation direction and the rotation speed of the limiting motor are set in advance, and the guide wire function can be kept in the wire collecting and paying off processes by matching with the driving motor.

8. The charging pile for the electric automobile convenient to maintain as claimed in claim 7, wherein the column-shaped protrusion is provided with a check washer at the bottom, and the column-shaped groove is provided with a gap matching with the check washer at the bottom.

Technical Field

The invention belongs to the technical field of electric automobile charging pile accessory machinery, and particularly relates to a charging pile convenient to maintain for an electric automobile.

Background

The pure electric vehicle is an automobile adopting a storage battery as an energy storage power source, the storage battery serves as the energy storage power source, electric energy is provided through a battery box motor, the motor is driven to rotate, and then the automobile is driven to run.

Disclosure of Invention

The invention aims to provide a charging pile for an electric automobile, which is convenient to maintain and aims at solving the problems that the existing charging pile is difficult to maintain and the winding and unwinding of the charging pile can only be controlled through manual operation in the operation process.

The invention is realized by the following technical scheme: a convenient-to-maintain charging pile for an electric automobile comprises a pile body, wherein a vertical partition plate is arranged in the pile body, a limiting motor is arranged at the upper position of one side of the vertical partition plate, the limiting motor is connected with a limiting shaft through the vertical partition plate, the limiting shaft is a threaded rod, and a limiting part which is rotatably connected with the limiting shaft is arranged on the limiting shaft; two symmetrically arranged driving motors are arranged below one side of the vertical partition plate, and the driving motors are connected with a driving shaft through the vertical partition plate; a left partition plate and a right partition plate which are connected with the front wall and the rear wall in the pile body are arranged on the right side of the vertical partition plate, a bobbin is arranged between the left partition plate and the right partition plate, baffles are arranged on two sides of the bobbin, a cable is wound on the bobbin between the baffles, the left end of the bobbin is rotatably connected with the left partition plate through a left connecting piece, the right end of the bobbin is rotatably connected with the right partition plate through a right connecting piece, a left sliding block is in threaded connection with a driving shaft between the vertical partition plate and the left partition plate, a winding motor is arranged on the left sliding block, a spline shaft is arranged on the right side of the winding motor, and a spline groove matched with the spline shaft is; a right sliding block is screwed on the driving shaft on the right side of the right partition plate, a clamping bulge is arranged on the left side of the right sliding block, and a clamping groove matched with the clamping bulge is arranged on the right side of the right connecting piece corresponding to the position of the clamping bulge;

a through hole matched with the limiting shaft is formed in the upper side of the limiting part, an inverted U-shaped groove is formed in the lower side of the limiting part, a pulley is connected between the inverted U-shaped grooves through a rotating shaft, and an arc-shaped groove is formed in the middle of the pulley; one end of the cable is connected with a mains supply and is fixed on the winding drum, and the other end of the cable penetrates through the upper part of the pulley from bottom to top and is embedded in the arc-shaped groove;

a detachable column-shaped cover body is arranged on the right side wall of the pile body corresponding to the height of the pulley, and a through line hole is formed in the center of the column-shaped cover body;

still including the rifle that charges, the rifle front end that charges is equipped with the head that charges, the downside of the rifle that charges be equipped with the slope setting the portion of gripping and with the spacing framework of the complex of the portion of gripping, the portion of gripping bottom is equipped with the wiring piece, the cable of stretching out in the pile body is connected to wiring piece bottom, and it is protruding that wiring piece top is equipped with the columnar order, and the protruding outside of columnar order is equipped with the external screw thread, and the portion of gripping bottom is equipped with the columnar order recess that matches with the columnar order arch, is equipped with the electricity connection piece in the columnar order recess, and the position that the columnar order arch corresponds the electricity connection.

Furthermore, the column-shaped cover body consists of an upper part and a lower part which are hinged with each other, a fixing piece is arranged on the outer side surface of the column-shaped cover body and used for connecting the upper part and the lower part, and a handle is arranged on the outer side surface; the side wall of the column-shaped cover body is provided with connecting threads for spirally fixing the column-shaped cover body and the side wall of the pile body.

Furthermore, a left spherical groove is arranged on the left side of the through hole, and a right spherical groove is arranged on the right side of the through hole; an outer limiting ball matched with the right spherical groove is arranged on one side, close to the charging gun, of the cable, and an inner limiting ball is arranged at a position, close to one end connected with mains supply, of the cable;

the diameters of the right spherical groove and the left spherical groove are larger than the diameter of the through hole.

Furthermore, a first abutting inductor is arranged in the spline groove, and a second abutting inductor is arranged in the clamping groove; and a third butting inductor is arranged in the left spherical groove, and a fourth butting inductor is arranged in the right spherical groove.

The control device is used for receiving real-time signals of the first proximity sensor, the second proximity sensor, the third proximity sensor and the fourth proximity sensor and controlling the working states of the limiting motor, the driving motor and the winding motor; the device also comprises a start paying-off switch, a stop paying-off switch, a start take-up switch and a stop take-up switch.

Furthermore, the rotation direction and the rotation speed of the limiting motor are set in advance, and the limiting motor is matched with the driving motor to keep the wire function in the wire winding and unwinding processes.

Further, the protruding bottom of columnar order is equipped with locking gasket, columnar order recess bottom is equipped with the breach that matches with locking gasket specification, can realize charging rifle and wiring piece stable connection.

In an initial state, the clamping bulge of the right sliding block is arranged in the clamping groove; when the control device detects a signal sent by a pay-off switch, the driving motor enables the driving shaft to rotate, the left sliding block and the right sliding block move rightwards under the action of the driving shaft until the spline shaft is positioned in the spline groove, the spline groove extrudes the first abutting inductor, the control device receives the signal of the first abutting inductor, the driving motor stops working, the winding motor and the limiting motor simultaneously work, and winding is started; when the paying-off switch stops sending a signal or the third abutting sensor is extruded by the inner limiting ball, the winding motor and the limiting motor stop working, the driving motor rotates reversely, the left sliding block and the right sliding block move leftwards under the action of the driving shaft until the clamping protrusion is arranged in the clamping groove, the clamping protrusion extrudes the second abutting sensor, and the control device receives the signal of the second abutting sensor and stops working;

when the wire is required to be wound, a wire winding starting switch is started, the driving motor enables the driving shaft to rotate, the left sliding block and the right sliding block move rightwards under the action of the driving shaft until the spline shaft is positioned in the spline groove, the spline groove extrudes the first abutting inductor, the control device receives a signal of the first abutting inductor, the driving motor stops working, the wire winding motor and the limiting motor simultaneously work, and the wire winding is started, wherein the wire winding motor is in a reverse state relative to the wire unwinding; when the wire take-up switch stops sending a signal or the abutting sensor is extruded by the outer limiting ball, the driving motor and the limiting motor stop working, the driving motor rotates reversely, the left sliding block and the right sliding block move leftwards under the action of the driving shaft until the clamping protrusion is arranged in the clamping groove, the clamping protrusion extrudes the abutting sensor II, the control device receives the signal of the abutting sensor II, and the driving motor stops working.

Compared with the prior art, the invention has the following advantages: the left sliding block and the right sliding block are simultaneously driven by the driving motor through reasonable arrangement, the spline shaft can be used for driving the winding drum to take up or pay off, meanwhile, the limiting control on the winding drum can be realized in a non-winding state, and the winding drum is prevented from reversing to loosen the winding; the limiting part is used for limiting, and the cable is guided by reciprocating left and right on the limiting shaft, so that the cable is guaranteed to be wound regularly on the surface of the winding drum; by arranging the inner limiting ball and the outer limiting ball on the cable, the cable is prevented from being excessively wound or excessively wound out when a stop paying-off switch or a stop winding-up switch is forgotten to be pressed, and the operation safety is higher; the charging gun is provided with a wiring piece which is detachably arranged, so that the charging gun can be conveniently detached and maintained when being damaged; the arrangement of the column-shaped cover body can ensure the integrity of the pile body and simultaneously facilitate the maintenance of related accessories in the column-shaped cover body.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of an unwound pile body.

Fig. 3 is a top view of an unwrapped wire stake.

Fig. 4 is a cross-sectional view of a pillar type cover.

Fig. 5 is a schematic structural view of a column-shaped cover.

Fig. 6 is a schematic structural diagram of the limiting member.

Fig. 7 is a schematic view of the structure of the charging gun.

Fig. 8 is a schematic view of the structure of the wiring member.

FIG. 9 is a schematic view of the spline shaft in the spline groove.

Fig. 10 is a schematic structural view of the detent projection disposed in the detent recess.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

As shown in fig. 1 to 10, a charging pile for an electric vehicle convenient to maintain comprises a pile body 1, wherein a vertical partition plate 11 is arranged in the pile body 1, a limiting motor 21 is arranged at an upper position of one side of the vertical partition plate 11, the limiting motor 21 is connected with a limiting shaft 2 through the vertical partition plate 11, the limiting shaft 2 is a threaded rod, a limiting member 22 rotatably connected with the limiting shaft 2 is arranged on the limiting shaft 2, and the limiting member 22 is driven by the limiting motor 21 to move left and right along the limiting shaft 2 due to the forward and reverse rotation of the limiting motor 21 under the gravity action of a cable 7; two symmetrically arranged driving motors 31 are arranged below one side of the vertical partition plate 11, and the driving motors 31 are connected with the driving shaft 3 through the vertical partition plate 11; a left partition plate 12 and a right partition plate 13 connected with the front wall and the rear wall in the pile body 1 are arranged on the right side of the vertical partition plate 11, a bobbin 6 is arranged between the left partition plate 12 and the right partition plate 13, baffle plates 61 are arranged on two sides of the bobbin 6, a cable 7 is wound on the bobbin 6 between the baffle plates 61, the left end of the bobbin 6 is rotatably connected with the left partition plate 12 through a left connecting piece 62, the right end of the bobbin 6 is rotatably connected with the right partition plate 13 through a right connecting piece 63, a left slider 4 is screwed on a driving shaft 3 between the vertical partition plate 11 and the left partition plate 12, a bobbin motor 41 is arranged on the left slider 4, a spline shaft 42 is arranged on the right side of the bobbin motor 41, and a spline groove 621 matched with the spline shaft 42 is arranged on the left side of; the right sliding block 5 is screwed on the driving shaft 3 on the right side of the right partition plate 13, the clamping protrusion 51 is arranged on the left side of the right sliding block 5, and the clamping groove 631 matched with the clamping protrusion 51 is arranged on the right side of the right connecting piece 63 corresponding to the position of the clamping protrusion 51;

a through hole 221 matched with the limiting shaft 2 is formed in the upper side of the limiting member 22, an inverted U-shaped groove 222 is formed in the lower side of the limiting member 22, a pulley 224 is connected between the inverted U-shaped grooves 222 through a rotating shaft 223, and an arc-shaped groove 225 is formed in the middle of the pulley 224; one end of the cable 7 is connected with a mains supply and is fixed on the bobbin 6, and the other end of the cable 7 penetrates through the upper part of the pulley 224 from bottom to top and is embedded in the arc-shaped groove 225;

a detachable column-shaped cover body 8 is arranged on the right side wall of the pile body 1 at a position corresponding to the height of the pulley 224, and a through line hole 80 is formed in the center of the column-shaped cover body 8; the column-shaped cover body 8 is composed of an upper part and a lower part which are hinged with each other, a fixing piece 87 (which is a common technology in the field and is not described herein) is arranged on the outer side surface of the column-shaped cover body 8 for connecting the upper part and the lower part, and a handle 86 (for conveniently rotating the column-shaped cover body 8) is arranged on the outer side surface; the side wall of the column-shaped cover body is provided with a connecting thread 85 for spirally fixing the column-shaped cover body 8 and the side wall of the pile body 1; a left spherical groove 83 is formed in the left side of the through hole 80, and a right spherical groove 84 is formed in the right side of the through hole 80; an outer limiting ball 72 matched with the right spherical groove 84 is arranged on one side, close to the charging gun 9, of the cable 7, and an inner limiting ball 71 is arranged at a position, close to one end connected with a mains supply, of the cable 7; the diameters of the right spherical groove 84 and the left spherical groove 83 are larger than the diameter of the through hole 80;

the electric power connector further comprises a charging gun 9, a charging head 91 is arranged at the front end of the charging gun 9, a holding portion 92 and a limiting frame body 93 (capable of helping a hand to effectively hold and avoid slipping) matched with the holding portion 92 are arranged on the lower side of the charging gun 9, a wiring piece 94 is arranged at the bottom of the holding portion 92, a cable 7 extending out of the pile body 1 is connected to the bottom of the wiring piece 94, a column-shaped protrusion 941 is arranged at the top end of the wiring piece 94, external threads are arranged outside the column-shaped protrusion 941, a column-shaped groove 921 matched with the column-shaped protrusion 941 is arranged at the bottom of the holding portion 92, a power connection block 922 is arranged in the column-shaped groove 921, a power connection groove 942 is arranged at the position, corresponding to the power connection block 922, of the power connection block 942 is powered on when; a check washer (which is a common technology in the field and is not described in the specification) is arranged at the bottom of the columnar boss 942, and a notch matched with the check washer in specification is arranged at the bottom of the columnar groove 921, so that the charging gun 9 can be stably connected with the wiring piece 94;

a first abutting inductor 622 is arranged in the spline groove 621, and a second abutting inductor 632 is arranged in the clamping groove 631; a third abutting inductor 83 is arranged in the left spherical groove 81, and a fourth abutting inductor 84 is arranged in the right spherical groove 82.

The control device is used for receiving real-time signals of the first abutting joint inductor 622, the second abutting joint inductor 632, the third abutting joint inductor 83 and the fourth abutting joint inductor 84 and controlling the working states of the limiting motor 21, the driving motor 31 and the winding motor 41; the device also comprises a pay-off starting switch, a pay-off stopping switch, a take-up starting switch and a take-up stopping switch; the rotation direction and the rotation speed of the limiting motor 21 are set in advance, and the wire function can be kept in the wire winding and unwinding processes by matching with the driving motor 31.

In the initial state, the position-locking projection 51 of the right slider 5 is arranged in the position-locking groove 631; when the control device detects a signal sent by a pay-off switch, the driving motor 31 enables the driving shaft 3 to rotate, the left sliding block 4 and the right sliding block 5 move rightwards under the action of the driving shaft until the spline shaft 42 is positioned in the spline groove 621, the spline groove 621 extrudes the first abutting sensor 622, the control device receives the signal of the first abutting sensor 622, the driving motor 31 stops working, the winding motor 41 and the limiting motor 21 work simultaneously, and winding starts; when the paying-off switch is stopped to send a signal or the abutting sensor III 83 is extruded by the inner limiting ball 71, the winding motor 31 and the limiting motor 21 stop working, the driving motor 31 rotates reversely, the left slider 4 and the right slider 5 move leftwards under the action of the driving shaft 3 until the clamping protrusion 51 is arranged in the clamping groove 631, the clamping protrusion 51 extrudes the abutting sensor II 632, and the control device receives the signal of the abutting sensor II 632 and stops working of the driving motor 31;

when the wire is required to be wound, a wire winding starting switch is started, the driving motor 31 enables the driving shaft 3 to rotate, the left sliding block 4 and the right sliding block 5 move rightwards under the action of the driving shaft 3 until the spline shaft 42 is positioned in the spline groove 621, the spline groove 621 extrudes the abutting sensor I622, the control device receives a signal of the abutting sensor I622, the driving motor 31 stops working, the wire winding motor 41 and the limiting motor 21 simultaneously work, and the wire winding is started, wherein the wire winding motor 41 is in a reverse state relative to the wire winding; when the wire rewinding switch stops sending a signal or the abutting sensor IV 84 is extruded by the outer limit ball 72, the driving motor 31 and the limit motor 72 stop working, the driving motor 31 rotates reversely, the left slider 4 and the right slider 5 move leftwards under the action of the driving shaft 3 until the clamping protrusion 51 is arranged in the clamping groove 631, the clamping protrusion 51 extrudes the abutting sensor II 632, the control device receives the signal of the abutting sensor II 632, and the driving motor 31 stops working;

in the using process, the left slider 4 and the right slider 5 are simultaneously driven by the driving motor 31, the spline shaft 42 can be used for driving the winding drum 6 to take up or pay off, meanwhile, the limiting control on the winding drum 6 can be realized in a non-winding state, and the winding drum 6 is prevented from reversing to loosen the winding; the limiting piece 22 is used for limiting the cable 7, and the cable 7 is guided by reciprocating left and right on the limiting shaft 21, so that the cable 7 is ensured to be wound regularly on the surface of the winding drum 6; by arranging the inner limiting ball 71 and the outer limiting ball 72 on the cable 7, the cable is prevented from being excessively wound or excessively wound out when a stop paying-off switch or a stop winding-up switch is forgotten to be pressed, and the operation safety is higher; the charging gun is provided with a wiring piece which is detachably arranged, so that the charging gun can be conveniently detached and maintained when being damaged; the arrangement of the column-shaped cover body can ensure the integrity of the pile body and simultaneously facilitate the maintenance of related accessories in the column-shaped cover body.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.