CN113734028B

CN113734028B - Vehicle-mounted rescue equipment and rescue method for electric vehicle

Info

Publication number: CN113734028B
Application number: CN202111127863.1A
Authority: CN
Inventors: 陈乐春
Original assignee: JIANGSU DIGITAL EAGLE TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: JIANGSU DIGITAL EAGLE TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-06-03
Anticipated expiration: 2041-09-26
Also published as: CN113734028A; CN114889457A

Abstract

The invention discloses vehicle-mounted rescue equipment and a rescue method for an electric vehicle, and belongs to the technical field of vehicle-mounted rescue equipment. An electric automobile vehicle-mounted rescue device comprises a charging box and a charging socket, wherein the charging box is arranged in a rescue vehicle, the charging socket is used for charging, a charging wire is connected between the charging box and the charging socket, the charging socket comprises a first shell and a second shell, a limiting mechanism used for limiting the movement of the charging wire is arranged in the first shell, one end, far away from the charging box, of the charging wire penetrates through the first shell and is connected with a charging assembly, the charging assembly is movably connected into the second shell, an external support mechanism is arranged in the second shell, and one end, far away from the first shell, of the second shell is provided with an opening; according to the invention, double fixing and limiting are carried out on the inside and the outside of the charging socket, the looseness of the socket and the interface butt joint caused by the shaking of a cable during charging is effectively avoided, the charging efficiency and the charging safety performance are improved, external dust is effectively prevented from entering the charging interface through the spacer, and the charging effect is ensured.

Description

Vehicle-mounted rescue equipment and rescue method for electric vehicle

Technical Field

The invention relates to the technical field of vehicle-mounted rescue equipment, in particular to vehicle-mounted rescue equipment and a rescue method for an electric automobile.

Background

The electric automobile is a vehicle which takes a vehicle-mounted power supply as power and drives wheels by a motor to run, meets various requirements of road traffic and safety regulations, has smaller influence on the environment compared with the traditional automobile, has wide prospect, but is immature in the prior art.

With the great popularization of electric vehicles, the infrastructure is indispensable, and the electric vehicle charging pile as a part of the charging infrastructure has important significance for promoting the popularization of electric vehicles. However, the electric steam charging pile equipment is usually fixed at one place and cannot be moved. Present electric automobile power battery electric quantity estimation is hardly accomplished with traditional car accurate, consequently, in the electric motor car use, the actual electric quantity that appears most likely exhausts and stops the risk on the way, just so need emergent rescue to charge it with portable storage battery car this moment, for electric automobile provides insufficient voltage rescue, makes the vehicle can continue to travel to near electric pile of charging and charges.

The charging socket of the mobile charging vehicle for emergency rescue is usually exposed outside directly, dust easily enters the charging socket, the charging effect is influenced, and meanwhile, an operator is easily damaged by electrifying the charging socket by mistake, so that the safety performance of the charging socket is poor; and when charging the rescue to electric automobile, be in the evening especially, in order to throw light on and remind other vehicles, the storage battery car need start and open the car light, and the storage battery car can produce the vibration, and then makes the cable rock, appears charging the condition that appears becoming flexible between storage battery car plug and the car interface that charges, leads to charging the failure, influences insufficient voltage rescue.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides vehicle-mounted rescue equipment and a rescue method for an electric vehicle.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an on-vehicle rescue equipment of electric automobile, is including setting up the charging case in the rescue car and being used for the charging socket that charges, be connected with the charging wire between charging case and the charging socket, charging socket includes first casing and second casing, be provided with the stop gear who is used for restricting the charging wire removal in the first casing, the one end that charging case was kept away from to the charging wire passes first casing and is connected with the charging assembly, charging assembly swing joint is in the second casing, be provided with the outrigger mechanism in the second casing, the opening has been seted up to the one end that first casing was kept away from to the second casing, the opening outer wall is provided with the spacer.

Preferably, first casing outer wall is provided with first mounting panel, first mounting panel outer wall rotates and is connected with the swing board, the one end that first mounting panel was kept away from to the swing board links to each other with the spacer, the spacer sets up to the flexible band magnetism thin slice, the spacer outer wall sets up to the smooth surface.

Preferably, the outer wall of the swinging plate is connected with a second mounting plate, the outer wall of the second mounting plate is connected with a baffle plate through a rotating shaft in a rotating mode, the outer wall of the rotating shaft is sleeved with a torsion spring, and the baffle plate is movably abutted to the spacer.

Preferably, the outer mechanism that props includes a plurality of sliders, the second casing outer wall is excavated there is the spout with slider matched with, every the slider outer wall all is excavated the activity groove, activity inslot swing joint has the annular spring, the subassembly that charges includes the socket, the socket outer wall has cup jointed the movable block, the movable block is provided with the matched with curved surface with the slider outer wall, two the curved surface activity offsets.

Preferably, a cavity is formed in the moving block in a chiseled mode, the inner wall of the cavity is connected with a second elastic element, one end, far away from the inner wall of the cavity, of the second elastic element is connected with the socket, and the outer wall of the socket is connected with the plug.

Preferably, the outer wall of the socket is connected with a fixed plate, two sides of the outer wall of the fixed plate are both connected with a push plate, and the outer wall of the push plate is provided with anti-skid lines.

Preferably, the limiting mechanism comprises two rotating rods which are rotatably connected in the first shell through bearings, the outer walls of the two rotating rods are sleeved with rollers, the charging wire is arranged between the two rollers, the outer walls of the two rotating rods are connected with the moving gears which are meshed with each other, the outer wall of the rotating rod is also connected with a ratchet wheel, the inner wall of the first shell is connected with a fixed block, the inner wall of the fixed block is provided with a groove, the inner wall of the groove is connected with a first elastic element, one end of the first elastic element, which is far away from the inner wall of the groove, is connected with a stop lever, the stop lever is rotationally connected in the first shell through a pin shaft, the stop lever is movably abutted to the ratchet of the ratchet wheel, a screw rod is connected with the inner thread of the fixing plate, the screw rod penetrates through the first shell and is connected with a driving bevel gear, and the outer wall of the rotating rod is connected with a driven bevel gear meshed with the driving bevel gear.

Preferably, the outer wall of the roller is provided with an annular curved surface groove, and friction force exists between the annular curved surface groove and a charging wire.

Preferably, the outer wall of the first shell is connected with a connecting pipe, the inner wall of the connecting pipe is connected with an elastic telescopic rod, and one end, far away from the inner wall of the connecting pipe, of the elastic telescopic rod is connected with a supporting plate.

The invention also discloses a rescue method of the electric automobile vehicle-mounted rescue equipment, which comprises the following steps:

s1: when the rescue vehicle is used for charging and rescuing the electric vehicle, the electric energy stored in the vehicle-mounted charging box is used for charging the vehicle through the charging wire and the charging socket, firstly, the spacer adhered to the opening of the charging socket by using magnetic force is pulled open, so that the plug in the opening can be conveniently leaked out to charge the vehicle, the swinging plates on two sides of the charging socket are mutually far away, and the second shell of the charging socket is arranged in the charging socket of the electric vehicle;

s2: the swinging plate far away from the charging socket drives the spacers to be arranged on two sides of the automobile charging interface, the outer shell surface of the electric automobile is adhered by utilizing the magnetism of the spacers, and the charging socket is fixed once;

s3: then pushing the push plate to enable the push plate to drive the charging assembly to move in the second shell through the fixing plate, enabling the moving block to apply acting force on the sliding block, enabling the sliding block to move in the sliding groove, stretching the annular spring to enable the sliding blocks to move out of the second shell and tightly adhere to a charging interface of the electric automobile, performing double limiting fixing on a charging socket, enabling the charging socket to be tightly tensioned in the charging interface of the automobile, continuously pushing the push plate to enable the socket to move in the cavity, enabling the second elastic element to start to compress, and enabling a plug at the end of the socket to move out of the moving block and charge the charging interface of the automobile;

s4: in the process of pushing the push plate to drive the charging wire to move in the first shell, the charging wire moves between the two rollers, friction force exists between the charging wire and the rollers, the two rollers and the moving gear rotate relatively, the ratchet wheel and the stop lever are matched, the rotating lever is prevented from rotating reversely, and the charging wire is pulled back;

s5: after finishing charging, stir the pin, first elastic element is tensile, makes the pin keep away from the fixed block, and the ratchet is no longer restricted this moment, promotes the push pedal backward, makes the push pedal drive the charging wire and moves backward and make the plug leave electric automobile's the interface that charges, inside the slider got into the second casing, no longer closely offsets with the interface inner wall that charges, tears the spacer from electric automobile shell face again, makes the spacer arrange the opening part again and carry out the separation to external dust.

Compared with the prior art, the invention provides vehicle-mounted rescue equipment and a rescue method for an electric automobile, which have the following beneficial effects:

1. according to the electric automobile vehicle-mounted rescue equipment and the rescue method, the double fixing limiting is carried out inside and outside the charging socket, the looseness of the socket and the interface butt joint caused by the shaking of the cable in the charging process is effectively avoided, the charging efficiency and the charging safety performance are improved, external dust is effectively prevented from entering the charging interface through the spacer, and the charging effect is guaranteed.

2. This on-vehicle rescue equipment of electric automobile and rescue method, through setting up the spacer outer wall into the smooth surface, avoid causing wearing and tearing at the electric automobile shell body with the spacer adhesion to it, and be provided with the baffle through the pivot torsional spring in the swinging plate outside, can make the spacer when to electric automobile shell surface adhesion, the baffle is with spacer perk end oppression, guarantees the spacer to the adhesion effect of electric automobile shell body, and then guarantees the fixed effect to charging socket.

3. According to the vehicle-mounted rescue equipment and the rescue method for the electric automobile, by arranging the limiting mechanism, the situation that the charging wire is contracted under the action of external force after being pulled out and the plug is far away from the charging interface of the electric automobile under the action of the elastic force of the annular spring and the elastic force of the second elastic element is avoided, the charging wire entering the charging socket is connected with the charging socket into a whole through the limiting mechanism, and the situation that the shaking of the charging wire outside the charging socket influences the internal structure of the charging socket is avoided.

4. According to the electric automobile vehicle-mounted rescue equipment and the rescue method, the elastic telescopic rod and the supporting plate are arranged on the inner side of the connecting pipe, so that the supporting plate supports the charging wire in the charging socket, in the process, the shaking force of the charging wire outside the charging socket is weakened through the buffering of the elastic telescopic rod, the shaking amplitude of the charging wire arranged in the connecting pipe is reduced, and the influence of the charging wire on the inside of the charging socket is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the charging socket of the present invention.

Fig. 3 is a schematic cross-sectional view of a charging socket according to the first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a portion a in fig. 3 according to the present invention.

Fig. 5 is a schematic cross-sectional structure diagram of a charging socket according to the present invention.

Fig. 6 is a schematic structural diagram of a portion B in fig. 5 according to the present invention.

Fig. 7 is a schematic view of the structure of the outside of the rotating lever of the present invention.

Fig. 8 is a schematic cross-sectional view of the second housing top according to the present invention.

Fig. 9 is a schematic view of the internal structure of the connecting tube of the present invention.

Fig. 10 is a schematic view of a connection structure of the first housing and the second housing of the present invention.

In the figure: 1. a charging box; 2. a charging jack; 3. a charging wire; 4. a first housing; 5. a second housing; 501. an opening; 6. a charging assembly; 7. a spacer; 8. rotating the rod; 801. a roller; 8011. an annular curved groove; 802. a moving gear; 803. a ratchet wheel; 804. a driven bevel gear; 9. a fixed block; 901. a groove; 902. a first elastic element; 10. a stop lever; 11. a slider; 111. a chute; 112. a movable groove; 113. an annular spring; 12. a socket; 121. a plug; 13. a moving block; 131. a cavity; 132. a second elastic element; 14. a fixing plate; 141. pushing the plate; 142. a screw; 15. a first mounting plate; 151. a swing plate; 16. a second mounting plate; 161. a baffle plate; 17. a connecting pipe; 171. an elastic telescopic rod; 172. and (7) a supporting plate.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-10, an on-vehicle rescue equipment of electric automobile, including setting up charging case 1 and the charging socket 2 that is used for charging in the rescue car, be connected with charging wire 3 between charging case 1 and the charging socket 2, charging socket 2 includes first casing 4 and second casing 5, be provided with the stop gear who is used for restricting the removal of charging wire 3 in the first casing 4, charging wire 3 keeps away from the one end of charging case 1 and passes first casing 4 and be connected with charging assembly 6, charging assembly 6 swing joint is in second casing 5, be provided with the outrigger mechanism in the second casing 5, second casing 5 keeps away from the one end of first casing 4 and has seted up opening 501, the opening 501 outer wall is provided with spacer 7.

According to the invention, when the electric automobile is subjected to power-shortage rescue by the mobile rescue vehicle, double fixing and limiting can be carried out on the inside and the outside of the charging socket 2, the looseness of the butt joint of the socket and the interface caused by the shaking of the charging wire 3 during charging can be effectively avoided, the charging efficiency and the charging safety can be improved, external dust can be effectively prevented from entering the charging interface through the spacer 7 when the electric automobile is not used, the charging effect can be ensured, meanwhile, an operator cannot be injured by an external object due to the contact with the charging socket 2 and the electrification, the operator can be effectively prevented from being accidentally injured by the charging device due to the electrification, and the safety performance of the charging device can be improved.

Example 2:

referring to fig. 1-4, an electric vehicle-mounted rescue apparatus is substantially the same as that in embodiment 1, further, a first mounting plate 15 is arranged on an outer wall of a first housing 4, a swing plate 151 is rotatably connected to an outer wall of the first mounting plate 15, one end of the swing plate 151, which is far away from the first mounting plate 15, is connected to a spacer 7, the spacer 7 is a flexible magnetic sheet, and an outer wall of the spacer 7 is a smooth surface; use the rescue vehicle to charge when the rescue vehicle carries out the rescue to the electric motor car, at first the spacer 7 that will utilize magnetic force adhesion to charge 2 opening 501 department pulls open, be convenient for make opening 501 spill inside plug 121 charge to the car, swing plate 151 with charge 2 both sides keeps away from each other, make charge 2's second casing 5 arrange electric motor car in the interface that charges, swing plate 151 of keeping away from charge 2 drives spacer 7 and arranges the both sides that the car charges the interface in, and utilize the magnetism of spacer 7 to carry out the adhesion to electric motor car's shell face, carry out one heavily fixed to charge 2, through setting up spacer 7 outer wall into the smooth surface, avoid causing wearing and tearing at the electric motor car shell body with spacer 7 adhesion to it.

As the preferred technical scheme of the invention, the outer wall of the swinging plate 151 is connected with a second mounting plate 16, the outer wall of the second mounting plate 16 is rotatably connected with a baffle 161 through a rotating shaft, the outer wall of the rotating shaft is sleeved with a torsional spring, and the baffle 161 is movably abutted against the spacer 7; be provided with baffle 161 through the pivot torsional spring in the swing board 151 outside, can make the spacer 7 when to electric automobile shell face adhesion, baffle 161 with spacer 7 perk end oppression, as shown in fig. 4, guarantee the spacer 7 to the adhesion effect of electric automobile shell body, and then guarantee the fixed effect to charging socket 2.

Example 3:

referring to fig. 5, 6, 8 and 10, an electric vehicle-mounted rescue apparatus is substantially the same as that in embodiment 2, further, the outer support mechanism includes a plurality of sliding blocks 11, a sliding groove 111 matched with the sliding block 11 is cut on an outer wall of the second housing 5, a movable groove 112 is cut on an outer wall of each sliding block 11, an annular spring 113 is movably connected in the movable groove 112, the charging assembly 6 includes a socket 12, a moving block 13 is sleeved on an outer wall of the socket 12, the moving block 13 and the outer wall of the sliding block 11 are provided with matched curved surfaces, and the two curved surfaces are movably abutted; promote the subassembly 6 that charges and remove in second casing 5, make movable block 13 exert the effort to slider 11, slider 11 removes in spout 111, and annular spring 113 is tensile, makes a plurality of sliders 11 shift out second casing 5 and carry out close phase paste to electric automobile's the interface that charges, carries out double spacing fixed to charging socket 2, makes charging socket 2 rise tightly in the interface that charges of car, avoids rocking the pine between socket and the interface and takes off.

As a preferred technical solution of the present invention, a cavity 131 is drilled in the moving block 13, the inner wall of the cavity 131 is connected with a second elastic element 132, one end of the second elastic element 132 far away from the inner wall of the cavity 131 is connected with the socket 12, and the outer wall of the socket 12 is connected with the plug 121; the second elastic element 132 has a larger elastic force than the annular spring 113, and as the charging assembly 6 is further pushed to move in the second housing 5, the socket 12 moves in the cavity 131, and the second elastic element 132 starts to compress, so that the plug 121 at the end of the socket 12 moves out of the moving block 13 and charges the charging interface of the automobile.

As the preferred technical scheme of the invention, the outer wall of the socket 12 is connected with a fixed plate 14, both sides of the outer wall of the fixed plate 14 are connected with push plates 141, and the outer wall of the push plates 141 is provided with anti-skid grains; the movement of the charging assembly 6 by the pushing plate 141 is facilitated.

Example 4:

referring to fig. 4, 5, 7 and 9, an electric vehicle-mounted rescue apparatus is substantially the same as that of embodiment 3, further, a limiting mechanism includes two rotating rods 8 rotatably connected in a first housing 4 through bearings, rollers 801 are respectively sleeved on outer walls of the two rotating rods 8, a charging wire 3 is disposed between the two rollers 801, moving gears 802 meshed with each other are connected to outer walls of the two rotating rods 8, a ratchet 803 is further connected to an outer wall of the rotating rod 8, a fixing block 9 is connected to an inner wall of the first housing 4, a groove 901 is formed in an inner wall of the fixing block 9, a first elastic element 902 is connected to an inner wall of the groove 901, a blocking rod 10 is connected to an end of the first elastic element 902 far away from the inner wall of the groove 901, the blocking rod 10 is rotatably connected in the first housing 4 through a pin shaft, the blocking rod 10 movably abuts against an internal thread of the ratchet 803, a screw 142 is connected to the fixing plate 14, the screw 142 passes through the first housing 4 and is connected with a driving bevel gear, the outer wall of the rotating rod 8 is connected with a driven bevel gear 804 which is meshed with the driving bevel gear; in the process of pushing the push plate 141 to drive the charging wire 3 to move in the first shell 4, the charging wire 3 moves between the two rollers 801, the push plate 141 is in threaded connection with the screw 142, so that the screw 142 drives the driving bevel gear to rotate in the process of moving the push plate 141, the driving bevel gear is meshed with the driven bevel gear 804 outside the rotating rod 8, the two rollers 801 and the moving gear 802 rotate relatively, so that the charging wire 3 and the rollers 801 have friction force, the charging wire 3 is conveyed, the ratchet wheel 803 is matched with the stop lever 10, the charging wire 3 is prevented from being contracted under the action of external force after being pulled out, and the elastic force of the annular spring 113 and the second elastic element 132 is prevented from keeping the plug 121 away from the charging interface of the electric vehicle, make charging wire 3 and charging socket 2 connection that get into in the charging socket 2 as a whole through stop gear, avoid rocking of charging socket 2 outside charging wire 3 to influence the structure of charging socket 2 inside charging wire 3.

As a preferred technical scheme of the invention, the outer wall of the roller 801 is provided with an annular curved surface groove 8011, and friction force exists between the annular curved surface groove 8011 and a charging wire 3; the contact area between the roller 801 and the charging cord 3 is increased.

As a preferred technical solution of the present invention, the outer wall of the first casing 4 is connected with a connecting pipe 17, the inner wall of the connecting pipe 17 is connected with an elastic telescopic rod 171, and one end of the elastic telescopic rod 171, which is far away from the inner wall of the connecting pipe 17, is connected with a supporting plate 172; through setting up elastic telescopic rod 171 and layer board 172 in connecting pipe 17 is inboard, make layer board 172 support charging wire 3 in charging socket 2, and at this in-process, charging socket 2 outer charging wire 3 shake power and weaken through elastic telescopic rod 171 buffering, and then make the charging wire 3 of arranging in connecting pipe 17 rock the range and reduce, make charging wire 3 diminish to the inside influence of charging socket 2.

Example 5

The rescue method of the electric automobile vehicle-mounted rescue device comprises the following steps:

s1: when the electric vehicle is charged and rescued by using the rescue vehicle, the electric energy stored in the vehicle-mounted charging box 1 is used for charging the electric vehicle through the charging wire 3 and the charging socket 4, firstly, the spacer 7 adhered to the opening of the charging socket 4 by using magnetic force is pulled open, so that the plug 121 with the opening leaking out is convenient for charging the electric vehicle, the swinging plates 151 on the two sides of the charging socket 4 are mutually far away, and the second shell 5 of the charging socket 2 is arranged in the charging socket of the electric vehicle;

s2: the swinging plate 151 far away from the charging socket 4 drives the spacers 7 to be arranged on two sides of the automobile charging interface, the outer shell surface of the electric automobile is adhered by utilizing the magnetism of the spacers 7, and the charging socket 4 is fixed once;

s3: then, the pushing plate 141 is pushed, the pushing plate 141 drives the charging assembly to move in the second shell 5 through the fixing plate 14, the moving block 13 applies acting force to the sliding blocks 11, the sliding blocks 11 move in the sliding grooves 111, the annular spring 113 stretches, the sliding blocks 11 move out of the second shell 5 and tightly adhere to a charging interface of the electric automobile, double limiting fixing is performed on the charging socket 2, the charging socket 2 is tightly fixed in the charging interface of the automobile, the pushing plate 141 is continuously pushed, the socket 12 moves in the cavity 131, the second elastic element 132 starts to be compressed, and the plug 121 at the end of the socket 12 moves out of the moving block 13 and charges the charging interface of the automobile;

s4: in the process of pushing the push plate 141 to drive the charging wire 3 to move in the first shell 4, the charging wire 3 moves between the two rollers 801, the charging wire 3 and the rollers 801 have friction force, the two rollers 801 and the moving gear 802 rotate relatively, the ratchet of the ratchet 803 is matched with the stop lever 10, the rotating rod 8 is prevented from rotating reversely, and the charging wire 3 is pulled back;

s5: after charging, toggle pin 161, first elastic element 902 is tensile, make pin 10 keep away from fixed block 9, ratchet 803 is no longer restricted this moment, promote push pedal 141 backward, make push pedal 141 drive charging wire 3 move back and make plug 121 leave electric automobile's the interface that charges, slider 11 gets into inside second casing 5, no longer closely offset with the interface inner wall that charges, tear spacer 7 from electric automobile shell face away again, make spacer 7 arrange opening 501 department again and carry out the separation to external dust.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An electric automobile vehicle-mounted rescue device comprises a charging box (1) arranged in a rescue vehicle and a charging socket (2) used for charging, a charging wire (3) is connected between the charging box (1) and the charging socket (2), characterized in that the charging socket (2) comprises a first housing (4) and a second housing (5), a limiting mechanism used for limiting the movement of the charging wire (3) is arranged in the first shell (4), one end of the charging wire (3) far away from the charging box (1) passes through the first shell (4) and is connected with the charging assembly (6), the charging component (6) is movably connected in the second shell (5), an external support mechanism is arranged in the second shell (5), an opening (501) is formed in one end, far away from the first shell (4), of the second shell (5), and a spacer (7) is arranged on the outer wall of the opening (501);

the outer supporting mechanism comprises a plurality of sliding blocks (11), sliding grooves (111) matched with the sliding blocks (11) are formed in the outer wall of the second shell (5), a movable groove (112) is formed in the outer wall of each sliding block (11), an annular spring (113) is movably connected into each movable groove (112), the charging assembly (6) comprises a socket (12), a movable block (13) is sleeved on the outer wall of the socket (12), matched curved surfaces are arranged on the outer walls of the movable block (13) and the sliding blocks (11), and the two curved surfaces are movably abutted;

a cavity (131) is drilled in the moving block (13), the inner wall of the cavity (131) is connected with a second elastic element (132), one end, far away from the inner wall of the cavity (131), of the second elastic element (132) is connected with the socket (12), and the outer wall of the socket (12) is connected with a plug (121);

the outer wall of the socket (12) is connected with a fixed plate (14), and both sides of the outer wall of the fixed plate (14) are connected with push plates (141);

the limiting mechanism comprises two rotating rods (8) which are rotatably connected in a first shell (4) through bearings, rollers (801) are sleeved on the outer walls of the two rotating rods (8), a charging wire (3) is arranged between the two rollers (801), the outer walls of the two rotating rods (8) are connected with moving gears (802) which are meshed with each other, the outer wall of each rotating rod (8) is further connected with a ratchet wheel (803), a fixed block (9) is connected to the inner wall of the first shell (4), a groove (901) is formed in the inner wall of the fixed block (9), a first elastic element (902) is connected to the inner wall of the groove (901), a stop lever (10) is connected to one end, far away from the inner wall of the groove (901), of the first elastic element (902), the stop lever (10) is rotatably connected in the first shell (4) through a pin shaft, and the stop lever (10) is movably abutted to the ratchet of the ratchet wheel (803), the fixed plate (14) is internally threaded with a screw rod (142), the screw rod (142) penetrates through the first shell (4) and is connected with a driving bevel gear, and the outer wall of the rotating rod (8) is connected with a driven bevel gear (804) meshed with the driving bevel gear.

2. The electric automobile vehicle-mounted rescue apparatus according to claim 1, characterized in that the first housing (4) is provided with a first mounting plate (15) on the outer wall, a swinging plate (151) is rotatably connected to the outer wall of the first mounting plate (15), one end of the swinging plate (151) far away from the first mounting plate (15) is connected to the spacer (7), the spacer (7) is provided with a flexible magnetic sheet, and the outer wall of the spacer (7) is provided with a smooth surface.

3. The on-vehicle rescue equipment of electric automobile of claim 2, characterized in that, the swing board (151) outer wall is connected with a second mounting board (16), the second mounting board (16) outer wall is connected with a baffle (161) through the pivot rotation, the pivot outer wall has cup jointed the torsional spring, baffle (161) and spacer (7) activity counterbalance.

4. The electric automobile vehicle-mounted rescue apparatus according to claim 1, wherein the outer wall of the push plate (141) is provided with anti-slip lines.

5. The vehicle-mounted rescue apparatus for electric vehicles according to claim 2, characterized in that the outer wall of the roller (801) is provided with an annular curved groove (8011), and a friction force exists between the annular curved groove (8011) and the charging wire (3).

6. The electric automobile vehicle-mounted rescue apparatus according to claim 1, wherein a connecting pipe (17) is connected to an outer wall of the first housing (4), an elastic telescopic rod (171) is connected to an inner wall of the connecting pipe (17), and a supporting plate (172) is connected to one end of the elastic telescopic rod (171) far away from the inner wall of the connecting pipe (17).

7. The rescue method of the electric automobile vehicle-mounted rescue equipment according to claim 5, characterized by comprising the following steps:

s1: when the electric vehicle is charged and rescued by using the rescue vehicle, the electric energy stored in the vehicle-mounted charging box (1) is used for charging the vehicle through the charging wire (3) and the charging socket (2), firstly, the spacer (7) adhered to the opening (501) of the charging socket (2) by using magnetic force is pulled open, so that the plug (121) with the opening (501) leaking out is convenient for charging the vehicle, the swinging plates (151) on the two sides of the charging socket (2) are mutually far away, and the second shell (5) of the charging socket (2) is placed in the charging socket of the electric vehicle;

s2: the swinging plate (151) far away from the charging socket (2) drives the spacers (7) to be arranged on two sides of the automobile charging interface, the outer shell surface of the electric automobile is adhered by utilizing the magnetism of the spacers (7), and the charging socket (2) is fixed once;

s3: then, the push plate (141) is pushed, the push plate (141) drives the charging assembly (6) to move in the second shell (5) through the fixing plate (14), the moving block (13) applies acting force to the sliding block (11), the sliding block (11) moves in the sliding groove (111), the annular spring (113) stretches, the sliding blocks (11) move out of the second shell (5) and tightly adhere to a charging interface of the electric automobile, double-limit fixing is carried out on the charging socket (2), the charging socket (2) is tightly tensioned in the charging interface of the automobile, the push plate (141) is continuously pushed, the socket (12) moves in the cavity (131), the second elastic element (132) starts to be compressed, and the plug (121) at the end of the socket (12) moves out of the moving block (13) and charges the charging interface of the automobile;

s4: in the process that the push plate (141) is pushed to drive the charging wire (3) to move in the first shell (4), the charging wire (3) moves between the two rollers (801), friction force exists between the charging wire (3) and the rollers (801), the two rollers (801) and the moving gear (802) rotate relatively, a ratchet of the ratchet wheel (803) is matched with the stop lever (10), the rotating rod (8) is prevented from rotating reversely, and the charging wire (3) is pulled back;

s5: after finishing charging, stir pin (10), first elastic element (902) are tensile, make pin (10) keep away from fixed block (9), ratchet (803) no longer restricted this moment, promote push pedal (141) backward, make push pedal (141) drive charging wire (3) move backward and make plug (121) leave electric automobile's the interface that charges, inside slider (11) got into second casing (5), no longer closely offset with the interface inner wall that charges, tear spacer (7) from electric automobile shell face again, make spacer (7) place opening (501) department again and carry out the separation to external dust.