CN112238777A

CN112238777A - Charging pile protection device for new energy automobile and use method

Info

Publication number: CN112238777A
Application number: CN202011112854.0A
Authority: CN
Inventors: 庄茹琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-01-19

Abstract

The invention discloses a charging pile protection device for a new energy automobile and a using method of the charging pile protection device. According to the charging pile, the torsion spring and the buzzer are matched, the first current conducting plate can rotate together with the round rod as a circle center through rotation of the rotating plate, then when the first current conducting plate is in contact with the second current conducting plate, the buzzer makes a sound to prompt a driver, the driver is prevented from continuously starting an automobile forwards to break a charging wire, the protection of the charging wire is facilitated, and the service life of the charging pile main body is prolonged.

Description

Charging pile protection device for new energy automobile and use method

Technical Field

The invention relates to the field of charging pile protection equipment, in particular to charging pile protection equipment for a new energy automobile and a using method of the charging pile protection equipment.

Background

The function of the charging pile is similar to that of an oiling machine in a gas station, and the charging pile can be fixed on the ground or on the wall, is installed in parking lots of public buildings and residential districts or charging stations, and can charge electric vehicles of various models according to different voltage levels. The input end of the charging pile is directly connected with an alternating current power grid, and the output end of the charging pile is a charging gun provided with a charging plug and used for charging the electric automobile.

In charging to the car, generally all will charge the rifle and peg graft on the car, realize the charging process to the car, after the car is charged and is accomplished, but because staff's error, probably will not fill electric pile and extract, just directly start the car, after the car starts, can drive the rifle that charges and move together to probably lead to breaking of charging wire.

Disclosure of Invention

The invention aims to provide a charging pile protection device for a new energy automobile and a using method thereof, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a charging pile protection device for a new energy automobile and a using method thereof comprise a charging pile main body, wherein a charging wire is fixedly connected to the bottom of one side of the charging pile main body, one end of the charging wire is fixedly connected with a charging gun, one side of the charging pile main body is provided with a fixing cylinder, two ends of the fixing cylinder are fixedly connected with fixing plates, one fixing plate is fixedly connected with the charging pile main body, the middle part of an inner cavity of the fixing plate is provided with a winding roller, two ends of the winding roller are fixedly connected with rotating plates, one opposite sides of the two rotating plates are fixedly connected with a round rod, the round rod is rotatably and alternately connected with the fixing plates, a torsion spring is movably sleeved outside the round rod, one end of the torsion spring is fixedly connected with a first fixing block, the first fixing block is fixedly connected with the fixing plate, and the other, the second fixed block with change board fixed connection, the outer wall winding of wind-up roll has the rope, one of them the top fixed mounting who changes the board has first current conducting plate, the top fixed mounting of solid fixed cylinder inner wall has the second current conducting plate, the second current conducting plate is located the back of first current conducting plate, one of them fixed mounting has bee calling organ on the fixed plate.

Preferably, the avris fixedly connected with limiting plate of fixed section of thick bamboo inner wall, just the limiting plate is located one side of commentaries on classics board.

Preferably, the rope is connected with the top sliding interlude of a fixed section of thick bamboo, the one end fixedly connected with lifting hook of rope, the other end of rope and the outer wall fixed connection of wind-up roll, wherein another fixedly connected with fixes the ring on the fixed plate, the lifting hook mutually supports with solid fixed ring, the fixed cover of one end of charging wire is equipped with the go-between, the through-hole has been seted up on the go-between.

Preferably, the limiting groove is formed in one end of the bottom of the lifting hook, the limiting rod is connected in the inner cavity of the limiting groove in a sliding and penetrating mode, the groove is formed in one end of the top of the lifting hook, and one end of the limiting rod is matched with the inner cavity of the groove.

Preferably, the top fixedly connected with magnet of gag lever post, one side fixedly connected with iron sheet of fluting inner wall, magnet and iron sheet mutually support.

Preferably, the top of a fixed section of thick bamboo is provided with the mounting panel, the mounting panel with fill one side fixed connection of electric pile main part, two baffles of one side symmetry fixedly connected with of mounting panel.

Preferably, the top of one side of the mounting plate is fixedly connected with a fixing seat, a through groove is formed in the fixing seat, a binding belt is slidably inserted into an inner cavity of the through groove, one end of the binding belt is fixedly connected with a secondary buckle, the other end of the binding belt is fixedly connected with a female buckle, and the secondary buckle and the female buckle are movably clamped.

Preferably, the bottom activity joint that fills the electric pile main part has the base, the equal sliding interlude in both sides of base is connected with the fixture block, fill the both sides of electric pile main part bottom all seted up with fixture block matched with draw-in groove, two one side that the fixture block was carried on the back mutually all is provided with the extrusion piece, the cavity has all been seted up to the both sides of base, the extrusion piece is located the inner chamber of cavity, the top of extrusion piece is rotated and is connected with the shank of bolt, the shank of bolt alternates with base screw thread and is connected.

Preferably, the bottom fixedly connected with slider of fixture block, the spout has been seted up to the bottom of cavity inner wall, fixedly connected with spring on one side inner wall of spout, spring and slider fixed connection.

The invention also provides a use method of the charging pile protection equipment for the new energy automobile, which comprises the following specific use steps:

the method comprises the following steps: in use, firstly, a charging gun is inserted into an automobile to charge the automobile, the limiting rod slides to enable the limiting rod to slide towards the direction of the limiting groove, so that the opening of the lifting hook is opened, the lifting hook is withdrawn from the fixing ring, then the rope wound on the fixing cylinder is unreeled, then the rope is pulled out, the lifting hook is hooked on the through hole in the connecting ring, one end of the rope and one end of the charging wire are relatively fixed, and the length of the rope is smaller than that of the charging wire;

step two: when the charging gun is inserted into an automobile and the automobile is started, the automobile can drive the charging gun to move, so that one end of a rope can move along with the charging gun, the rope wound outside a winding roller can pull the winding roller along with the routing of the rope, the winding roller can drive a round rod to rotate, a second fixing block can be driven to move along with the rotation of a rotating plate, the torsional spring is distorted and deformed, the torsional spring has certain torsion on the rotating plate, and the rotating plate can conveniently rotate to the original state;

step three: along with the rotation of commentaries on classics board, first current conducting plate also can use the round bar to rotate as the centre of a circle together, then when first current conducting plate contacts with the second current conducting plate, bee calling organ circular telegram operation also makes bee calling organ sound and indicates the driver, prevents that the driver from continuing to start the car forward and breaking the charging wire.

The invention has the technical effects and advantages that:

(1) according to the invention, by utilizing the arrangement mode that the torsion spring is matched with the buzzer, the first current conducting plate can also rotate together by taking the round rod as the circle center through the rotation of the rotating plate, then when the first current conducting plate is contacted with the second current conducting plate, the buzzer is electrified to operate, so that the buzzer can make a sound to prompt a driver, the driver is prevented from continuously starting an automobile forwards to break a charging wire, the protection on the charging wire is facilitated, and the service life of the charging pile main body is also facilitated to be prolonged;

(2) according to the invention, the secondary buckle and the female buckle are matched, and the secondary buckle and the female buckle are buckled, so that two ends of the binding belt are conveniently connected, the binding belt forms a complete ring, charging wires wound into the ring are conveniently bound, the charging wires wound on the two baffles are prevented from moving randomly, and the charging wires are conveniently stored and sorted;

(3) according to the invention, by utilizing the arrangement mode that the rotating plate is matched with the limiting plate, as the torsion spring is always in a deformation state outside the round rod, the torsion spring always has torsion on the round rod, so that the rotating plate always has a tendency of counterclockwise movement, the limiting plate is convenient for limiting the position of the original state of the first current conducting plate, and at the moment, the first current conducting plate has a certain length from the second current conducting plate, namely, the first current conducting plate is prevented from being in direct contact with the second current conducting plate.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic front view of the present invention.

FIG. 3 is a schematic view of the front structure of the inner part of the fixing cylinder according to the present invention.

FIG. 4 is a schematic view of the inner side structure of the fixing cylinder according to the present invention.

FIG. 5 is a second schematic view of the inner side structure of the fixing cylinder according to the present invention.

Fig. 6 is a schematic view of the inner front structure of the hook of the present invention.

FIG. 7 is a schematic front view of the binding band of the present invention.

FIG. 8 is a schematic view of the internal front structure of the extrusion block of the present invention.

In the figure: 1. a charging pile main body; 2. a charging wire; 3. a charging gun; 4. a fixed cylinder; 5. a fixing plate; 6. a wind-up roll; 7. rotating the plate; 8. a round bar; 9. a torsion spring; 10. a rope; 11. a first conductive plate; 12. a second conductive plate; 13. a buzzer; 14. a limiting plate; 15. a hook; 16. a fixing ring; 17. a connecting ring; 18. a limiting groove; 19. a limiting rod; 20. a magnet; 21. a baffle plate; 22. a fixed seat; 23. a binding belt; 24. a sub-buckle; 25. a female buckle; 26. a base; 27. a clamping block; 28. extruding the block; 29. a bolt shank; 30. a slider; 31. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a charging pile protection device for a new energy automobile and a use method thereof as shown in figures 1-8, the charging pile protection device comprises a charging pile main body 1, a charging wire 2 is fixedly connected to the bottom of one side of the charging pile main body 1, a charging gun 3 is fixedly connected to one end of the charging wire 2, a fixed cylinder 4 is arranged on one side of the charging pile main body 1, a limit plate 14 is fixedly connected to the side of the inner wall of the fixed cylinder 4, the limit plate 14 is positioned on one side of a rotating plate 7, the torsional spring 9 is always in a deformation state outside the round rod 8, the torsional spring 9 always has torsion on the round rod 8, so that the rotating plate 7 always has a tendency of counterclockwise motion, the position of an original state of a first conductive plate 11 is conveniently limited through the limit plate 14, at the moment, the first conductive plate 11 has a certain length from a second conductive plate 12, namely, the first conductive plate 11 is, the equal fixedly connected with fixed plate 5 in both ends of solid fixed cylinder 4, one of them fixed plate 5 with fill electric pile main part 1 fixed connection, be convenient for seal the inner chamber of solid fixed cylinder 4 through fixed plate 5, also be convenient for just also be connected fixedly to solid fixed cylinder 4 and the relative position who fills between the electric pile main part 1.

A winding roller 6 is arranged in the middle of an inner cavity of a fixed plate 5, rotating plates 7 are fixedly connected to both ends of the winding roller 6, the winding of a rope 10 is limited by the rotating plates 7, when the winding roller 6 is prevented from rotating, the rope 10 is wound on a round rod 8, so that the rope 10 is neater to wind, the round rod 8 is fixedly connected to one side of each of the two rotating plates 7, which is opposite to each other, the round rod 8 is rotatably and alternately connected with the fixed plate 5, the winding roller 6 is rotated around the axis of the round rod 8 through the round rod 8, so that the rope 10 is wound and unwound, a torsion spring 9 is movably sleeved outside the round rod 8, a first fixed block is fixedly connected to one end of the torsion spring 9, the first fixed block is fixedly connected with the fixed plate 5, a second fixed block is fixedly connected to the other end of the torsion spring 9, the second fixed block is fixedly connected with the rotating plates 7, and the, be convenient for make the both ends of torsional spring 9 respectively with fixed plate 5 and commentaries on classics board 7 interconnect, through changeing the rotation of board 7, alright make torsional spring 9 take place elastic deformation, also be convenient for just also make commentaries on classics board 7 revolve to its home position.

The rope 10 is wound on the outer wall of the winding roller 6, the rope 10 is connected with the top of the fixed cylinder 4 in a sliding and penetrating manner, a circular ring is fixedly sleeved on the outer wall of the rope 10 and is positioned above the fixed cylinder 4 to prevent the rope 10 from being excessively wound, when the rope 10 is wound outside the fixed cylinder 4, the circular ring is just attached to the top end of the fixed cylinder 4, at the moment, the first conductive plate 11 is attached to the limiting plate 14 to limit the position of the rotating plate 7 conveniently, the first conductive plate 11 is prevented from contacting the second conductive plate 12, one end of the rope 10 is fixedly connected with a lifting hook 15, the other end of the rope 10 is fixedly connected with the outer wall of the winding roller 6, a fixed ring 16 is fixedly connected onto the other fixed plate 5, the lifting hook 15 is mutually hooked with the fixed ring 16 to facilitate limiting of the rope 10, and prevent the position of the rope 10 wound on the fixed cylinder 4 from moving randomly, so that, lifting hook 15 mutually supports with solid fixed ring 16, and the fixed cover of one end of charging wire 2 is equipped with go-between 17, has seted up the through-hole on the go-between 17, and lifting hook 15 is convenient for collude even in the inner chamber of through-hole on go-between 17 to make the one end of rope 10 can with the one end fixed connection of charging wire 2.

Spacing groove 18 has been seted up to the one end of lifting hook 15 bottom, be convenient for accomodate gag lever post 19 through spacing groove 18, thereby make the opening part of lifting hook 15 open, the slip interlude is connected with gag lever post 19 in the inner chamber of spacing groove 18, the fluting has been seted up to the one end at lifting hook 15 top, the one end and the grooved inner chamber of gag lever post 19 mutually support, gag lever post 19's top fixedly connected with magnet 20, one side fixedly connected with iron sheet of fluting inner wall, magnet 20 mutually supports with the iron sheet, through the inter attraction between magnet 20 and the iron sheet, be convenient for make gag lever post 19 joint in grooved inner chamber, thereby be convenient for seal the opening part of lifting hook 15, prevent that lifting hook 15 from droing from solid fixed ring 16 or go-between 17.

The top of one of them commentaries on classics board 7 fixed mounting has first current conducting plate 11, and the top fixed mounting of the inner wall of fixed cylinder 4 has second current conducting plate 12, and second current conducting plate 12 is located the back of first current conducting plate 11, and fixed mounting has bee calling organ 13 on one of them fixed plate 5, and bee calling organ 13 passes through second current conducting plate 12 and first current conducting plate 11 and external power source electric connection, just promptly after laminating contact between first current conducting plate 11 and the second current conducting plate 12, bee calling organ 13 alright circular telegram operation sound.

The mounting plate is arranged above the fixed cylinder 4 and is fixedly connected with one side of the charging pile main body 1, two baffles 21 are symmetrically and fixedly connected with one side of the mounting plate, the baffles 21 are L-shaped, the charging wire 2 can be conveniently wound on the two baffles 21, the charging wire 2 can be wound, the top of one side of the mounting plate is fixedly connected with a fixed seat 22, a through groove is formed in the fixed seat 22, a binding belt 23 is slidably inserted and connected in an inner cavity of the through groove, one end of the binding belt 23 is fixedly connected with a sub-buckle 24, the other end of the binding belt 23 is fixedly connected with a female buckle 25, the sub-buckle 24 is movably clamped with the female buckle 25, the two ends of the binding belt 23 can be conveniently connected by buckling the sub-buckle 24 and the female buckle 25, so that the binding belt 23 forms a complete ring, the charging wire 2 wound into the ring can be conveniently bound, the charging wire 2 wound on the two baffles 21 can be, be convenient for to accomodating the arrangement of charging wire 2.

The bottom of the charging pile main body 1 is movably clamped with a base 26, two sides of the base 26 are slidably and penetratingly connected with clamping blocks 27, two sides of the bottom of the charging pile main body 1 are respectively provided with a clamping groove matched with the clamping blocks 27, one side of each of the two clamping blocks 27, which is opposite to each other, is provided with a cavity, the extruding blocks 28 are positioned in inner cavities of the cavities, the top ends of the extruding blocks 28 are rotatably connected with bolt rods 29, when the bolt rods 29 are screwed down, the bottom ends of the bolt rods 29 can drive the extruding blocks 28 to move, the front and the back of the extruding blocks 28 can be limited by the inner walls of the cavities, so that the extruding blocks 28 can slide up and down in the cavities, the extruding blocks 28 can move towards the clamping blocks 27, and because inclined planes attached between the extruding blocks 28 and the clamping blocks 27 are matched, the extruding blocks 28 can move downwards, can promote fixture block 27, just also be convenient for impress fixture block 27 in the inner chamber of draw-in groove, be convenient for to filling the fixed of relative position between electric pile main part 1 and the base 26, it is fixed to be convenient for fill the installation of electric pile main part 1, bolt bar 29 and base 26 screw thread alternate connection, fixture block 27's bottom fixedly connected with slider 30, the spout has been seted up to the bottom of cavity inner wall, fixedly connected with spring 31 on the one side inner wall of spout, spring 31 and slider 30 fixed connection, through spring 31 to slider 30's elasticity, just also be convenient for slide fixture block 27, just also be convenient for make fixture block 27 break away from the inner chamber of draw-in.

The using method of the invention comprises the following steps:

in use, firstly, the charging gun 3 is inserted into a vehicle to charge the vehicle, the limiting rod 19 is slid to enable the limiting rod 19 to slide towards the direction of the limiting groove 18, the opening of the lifting hook 15 is opened, the lifting hook 15 is withdrawn from the fixing ring 16, then the rope 10 wound on the fixing cylinder 4 is unreeled, then the rope 10 is pulled out, the lifting hook 15 is hooked on the through hole on the connecting ring 17, one end of the rope 10 and one end of the charging wire 2 are relatively fixed, because the length of the rope 10 is smaller than that of the charging wire 2, when the charging gun 3 is inserted into the vehicle, the vehicle drives the charging gun 3 to move, so that one end of the rope 10 moves along with the charging gun 3, the rope 10 moves to a straightening state, the rope 10 wound outside the winding roller 6 can pull the winding roller 6, thereby make wind-up roll 6 drive round bar 8 rotate, rotation through changeing board 7, can drive the second fixed block and move together, just also make torsional spring 9 take place distortion, torsion to changeing board 7 through torsional spring 9, make changeing board 7 gyration to its primitive state, also be exactly the state that current conducting plate 11 and limiting plate 14 laminated mutually, along with changeing the rotation of board 7, first current conducting plate 11 round bar 8 rotates for the centre of a circle, then when first current conducting plate 11 contacts with second current conducting plate 12, bee calling organ 13 circular telegram operation, just also make bee calling organ 13 sound give out the sound and indicate the driver, prevent that the driver from continuing to start the car forward and break charging wire 2, be convenient for to charging wire 2's protection, also be convenient for improve the life to filling electric pile main part 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The charging pile protection device for the new energy automobile comprises a charging pile main body (1) and is characterized in that a charging wire (2) is fixedly connected to the bottom of one side of the charging pile main body (1), a charging gun (3) is fixedly connected to one end of the charging wire (2), a fixed cylinder (4) is arranged on one side of the charging pile main body (1), fixed plates (5) are fixedly connected to two ends of the fixed cylinder (4), one of the fixed plates (5) is fixedly connected with the charging pile main body (1), a winding roller (6) is arranged in the middle of an inner cavity of the fixed plate (5), rotating plates (7) are fixedly connected to two ends of the winding roller (6), round rods (8) are fixedly connected to one opposite sides of the two rotating plates (7), the round rods (8) are rotatably and alternately connected with the fixed plates (5), and torsion springs (9) are movably sleeved outside the round rods (8), the utility model discloses a winding roller, including the one end of torsional spring (9), the first fixed block of one end fixedly connected with of torsional spring (9), first fixed block and fixed plate (5) fixed connection, the other end fixedly connected with second fixed block of torsional spring (9), the second fixed block with change board (7) fixed connection, the outer wall winding of wind-up roll (6) has rope (10), one of them the top fixed mounting who changes board (7) has first current conducting plate (11), the top fixed mounting of solid fixed cylinder (4) inner wall has second current conducting plate (12), second current conducting plate (12) are located the back of first current conducting plate (11), one of them fixed mounting has bee calling organ (13) on fixed plate (5).

2. The charging pile protection device for the new energy automobile, according to claim 1, wherein a limiting plate (14) is fixedly connected to the side of the inner wall of the fixed cylinder (4), and the limiting plate (14) is located on one side of the rotating plate (7).

3. The charging pile protection device for the new energy automobile, according to claim 1, wherein the rope (10) is slidably inserted and connected with the top of the fixed cylinder (4), one end of the rope (10) is fixedly connected with a lifting hook (15), the other end of the rope (10) is fixedly connected with the outer wall of the winding roller (6), the other end of the rope is fixedly connected with a fixed ring (16) on the fixed plate (5), the lifting hook (15) and the fixed ring (16) are matched with each other, a connecting ring (17) is fixedly sleeved at one end of the charging wire (2), and a through hole is formed in the connecting ring (17).

4. The charging pile protection device for the new energy automobile, according to claim 3, wherein a limiting groove (18) is formed in one end of the bottom of the lifting hook (15), a limiting rod (19) is connected to an inner cavity of the limiting groove (18) in a sliding and penetrating manner, a groove is formed in one end of the top of the lifting hook (15), and one end of the limiting rod (19) is matched with the inner cavity of the groove.

5. The charging pile protection device for the new energy automobile, according to claim 4, characterized in that a magnet (20) is fixedly connected to the top end of the limiting rod (19), an iron sheet is fixedly connected to one side of the inner wall of the slot, and the magnet (20) and the iron sheet are matched with each other.

6. The charging pile protection device for the new energy automobile is characterized in that a mounting plate is arranged above the fixing cylinder (4), the mounting plate is fixedly connected with one side of the charging pile main body (1), and two baffles (21) are symmetrically and fixedly connected with one side of the mounting plate.

7. The charging pile protection device for the new energy automobile is characterized in that a fixing seat (22) is fixedly connected to the top of one side of the mounting plate, a through groove is formed in the fixing seat (22), a binding belt (23) is slidably inserted into an inner cavity of the through groove, a sub buckle (24) is fixedly connected to one end of the binding belt (23), a female buckle (25) is fixedly connected to the other end of the binding belt (23), and the sub buckle (24) and the female buckle (25) are movably clamped.

8. The charging pile protection device for the new energy automobile, according to claim 1, characterized in that a base (26) is movably clamped at the bottom of the charging pile main body (1), clamping blocks (27) are slidably and alternately connected to two sides of the base (26), clamping grooves matched with the clamping blocks (27) are formed in two sides of the bottom of the charging pile main body (1), two extrusion blocks (28) are arranged on the opposite sides of the clamping blocks (27), cavities are formed in two sides of the base (26), the extrusion blocks (28) are located in the inner cavities of the cavities, bolt rods (29) are rotatably connected to the top ends of the extrusion blocks (28), and the bolt rods (29) are in threaded and alternately connected with the base (26).

9. The charging pile protection device for the new energy automobile as claimed in claim 8, wherein a sliding block (30) is fixedly connected to the bottom end of the clamping block (27), a sliding groove is formed in the bottom end of the inner wall of the cavity, a spring (31) is fixedly connected to the inner wall of one side of the sliding groove, and the spring (31) is fixedly connected with the sliding block (30).

10. The use method of the charging pile protection equipment for the new energy automobile is characterized by comprising the following specific use steps of:

the method comprises the following steps: in use, firstly, a charging gun (3) is inserted into a vehicle to charge the vehicle, the limiting rod (19) is slid to enable the limiting rod (19) to slide towards the limiting groove (18), an opening of the lifting hook (15) is opened, the lifting hook (15) is withdrawn from the fixing ring (16), then the rope (10) wound on the fixing barrel (4) is unreeled, then the rope (10) is pulled out, the lifting hook (15) is hooked on a through hole in the connecting ring (17), one end of the rope (10) is relatively fixed with one end of the charging wire (2), and the length of the rope (10) is smaller than that of the charging wire (2);

step two: when charging gun (3) is inserted on the automobile, when the automobile starts to start, the automobile drives charging gun (3) to move, so that one end of rope (10) moves along with charging gun (3), so that rope (10) moves to a straightening state, rope (10) wound outside winding roller (6) can pull winding roller (6), so that winding roller (6) drives round rod (8) to rotate, second fixed block can be driven to move together through rotation of rotating plate (7), torsion deformation of torsion spring (9) is also caused, and rotating plate (7) is rotated to the original state through torsion of torsion spring (9), namely, current conducting plate (11) and limiting plate (14) are attached;

step three: along with the rotation of commentaries on classics board (7), first current conducting plate (11) round bar (8) rotate for the centre of a circle, then when first current conducting plate (11) and second current conducting plate (12) contact, bee calling organ (13) circular telegram operation also makes bee calling organ (13) sounding to indicate the driver, prevents that the driver from continuing to launch the car forward and breaking charging wire (2).