CN111152765A

CN111152765A - New energy automobile falls into pit equipment of saving oneself

Info

Publication number: CN111152765A
Application number: CN201911362723.5A
Authority: CN
Inventors: 马成龙
Original assignee: Anhui Qingyixun Network Technology Co Ltd
Current assignee: JINGJIANG YIKAI VENTILATION EQUIPMENT Co.,Ltd.
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-05-15
Anticipated expiration: 2039-12-26
Also published as: CN111152765B

Abstract

The invention discloses a pit self-rescue device of a new energy automobile in the technical field of automobile safety, which comprises an installation rear plate, a folding guard plate, a support supporting plate, two groups of fixing shafts, two groups of driving pulleys, a telescopic crank, a support shaft, a hub connecting device and a driving pulley, wherein a step through hole and a rectangular through groove are used for being matched with a gasket connecting bolt to fix a circular track plate at the position where a tire is installed, then the folding guard plate is installed again, a belt limiting device is used for limiting a track, the device is installed on a driving wheel of the automobile to start the automobile, the hub connecting device enables the driving pulley to rotate through a first bearing and a second bearing, the support shaft, the telescopic crank, the support supporting plate, the folding guard plate and the installation rear plate form a frame, a track walking mechanism is further formed, the slippage is reduced, the automobile can conveniently run on sand or soft ground and can run out of pits, the tire is not worn, and the trafficability is increased.

Description

New energy automobile falls into pit equipment of saving oneself

Technical Field

The invention relates to the technical field of automobile safety, in particular to a pit self-rescue device for a new energy automobile.

Background

The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel but a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure. The invention of the automobile brings great convenience to people for going out; with the continuous development of the automobile industry, people not only require the safety and comfort of driving automobiles, but also require the multifunctionality of automobiles; however, when the automobile runs in a desert or on a muddy dirt road, the tire of the automobile often sinks into a sand pit or a soil pit due to the influence of factors such as weather conditions or geographical environment, and the automobile cannot drive away and is trapped; in winter, particularly in ice and snow climate in the north, snow is accumulated on roads, the ground is wet and slippery, and many automobiles can slip on the roads, so that accidents often occur.

At present, various tire anti-skid devices are available in the market, most common is that an iron chain, a beef tendon chain or a rubber chain is made into an anti-skid chain, and the anti-skid chain assembled on a tire generates huge pressure on the ground, increases the friction force with the road surface, plays an anti-skid role, and increases the safety performance of vehicle running; the automobile has the defects of difficult disassembly and assembly, large dead weight, serious tire abrasion and road surface damage and influence on the automobile driving safety to a certain extent; especially in the severe cold areas of northeast and northwest of China, because of the long ice and snow period in winter, traffic accidents caused by wet and slippery road surfaces and pits of various vehicles occur in tens of thousands of times every year, but the antiskid chain in the prior art has an unsatisfactory antiskid effect in practical application, the pit-sinking self-rescue measures are incomplete, and the antiskid chain and self-rescue equipment are complicated to install and disassemble, thereby wasting time and labor.

For example, CN201720945732.7 proposes a self-rescue device for a vehicle in a pit, which comprises an electric push rod body and a connecting block, wherein the connecting block is fixed on a fixing portion of the electric push rod body, the connecting block is provided with a threaded hole penetrating through left and right surfaces of the connecting block, a first hub nut connecting piece is fixed in the threaded hole, the first hub nut connecting piece comprises a screw portion and a first nut sleeve portion fixed at one end of the screw portion, the other end of the screw portion is provided with an inner hexagonal groove, a shaft sleeve extending to the right side is fixed on the right side surface of the fixing portion of the electric push rod body, the position of the screw portion in the first hub nut connecting piece is adjusted by a hexagonal wrench (the hexagonal wrench is inserted into the inner hexagonal groove at one end of the outer side of the screw portion), so as to adjust the distance between the first nut sleeve portion and the connecting block (in order to prevent the, generally, the connecting block is kept a small distance away from the hub), so that the connecting block can be sleeved on a corresponding hub nut; then, adjusting the upper and lower positions of the rectangular clamping part of the second hub nut connecting piece in the rectangular hole and the distance between the second nut sleeve part and the connecting block to enable the rectangular clamping part to be sleeved on another corresponding hub nut, wherein the positioning magnetic ring positioned outside the rectangular clamping part is adsorbed on the connecting block under the action of magnetic force to simply position the second hub nut connecting piece, the first hub nut connecting piece is used for supporting and driving, and the second hub nut connecting piece is used for driving; finally, the device is tied to the corresponding spoke of the wheel hub by using a binding band, the main controller module, the wireless pressure sensor module and the wireless image acquisition module are operated to work and automatically complete networking, the device has the advantages of high automation degree and convenience in use, but the device has higher requirement on the capability of assembly maintenance personnel, so that the device which is convenient to operate and install and convenient to assemble and enables the tire sunk into a sand pit or a soil pit to effectively work is urgently needed to be designed.

Disclosure of Invention

The invention aims to provide pit-trapping self-rescue equipment for a new energy automobile, and aims to solve the problems that a device which is convenient to operate and install and assemble and enables tires trapped in a sand pit or a soil pit to work effectively is urgently needed to be designed in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a pit self-rescue device for a new energy automobile comprises a mounting back plate, a folding guard plate, a supporting splint, two groups of fixing shafts, two groups of driving belt wheels, a telescopic crank, a supporting shaft, a wheel hub connecting device and a driving belt wheel, the supporting plate is horizontally welded at the center of the front surface of the mounting rear plate, the folding guard plate is fixed on the front surface of the supporting plate through screws, two groups of fixing shafts are symmetrically welded below the left side and the right side of the front surface of the mounting rear plate, the front end of the fixed shaft extends to the front surface of the folding guard plate through the through hole, the driving belt wheel is rotatably sleeved on the outer wall of the fixed shaft, the rear surface of the transmission belt wheel is coaxially welded with a first check ring, the left side and the right side of the rear surface of the folding guard plate are fixed with belt limiting devices through screws, the belt limiting device is sleeved at the front end of the fixed shaft and attached to the front surface of the transmission belt wheel, and the telescopic crank is vertically welded in the center of the front side of the upper surface of the supporting plate;

the telescopic crank is characterized in that a supporting shaft is horizontally welded to the rear side of the top of the outer wall of the telescopic crank, a first bearing and a second bearing are respectively fixedly sleeved on the rear side and the middle part of the outer wall of the supporting shaft, a hub connecting device is welded to the outer wall of the first bearing, a driving belt wheel is welded to the front side of the outer wall of the hub connecting device, the inner wall of the driving belt wheel is connected with the outer wall of the second bearing through a supporting device, second check rings are coaxially welded to the front end face and the rear end face of the driving belt wheel, and the front end portions and the rear end portions of the driving belt wheel and the.

Preferably, the folding guard plate comprises a rectangular iron plate, the upper portion and the lower portion of the rectangular iron plate are respectively provided with a rectangular containing cavity, the inner cavity of the rectangular containing cavity is matched with a sliding insertion type movable iron plate, the inner end face of the movable iron plate is connected with the bottom face of the inner cavity of the rectangular containing cavity through a plurality of first expansion springs which are evenly spaced, the center of the inner wall of an opening of the rectangular containing cavity is connected with a first limiting bolt in a threaded mode, and the first limiting bolt is attached to the outer end face of the movable iron plate.

Preferably, belt stop device includes the solid fixed ring of threaded through-hole, the right side welding of solid fixed ring has the toper pipe, the coaxial welding of uncovered terminal surface of toper pipe has the go-between, the right surface of go-between is equipped with the annular mounting groove, the inner chamber ring array of annular mounting groove has a plurality of rubber columns, it has elastic telescopic rod to run through fixed the pegging graft between the both ends of rubber column, the even interval of inner wall of annular mounting groove is equipped with spacing blind hole, and elastic telescopic rod's both ends are pegged graft at the inner chamber of spacing blind hole.

Preferably, telescopic crank includes the internal thread sleeve, the telescopic inner chamber spiro union of internal thread has the support threaded rod, the spiro union has the second spacing bolt to run through the spiro union on the telescopic outer wall upper portion of internal thread, the top welding of support threaded rod has hexagonal prism, the top welding of hexagonal prism has spacing plectane, hollow sleeve pipe has been cup jointed through the hexagon hole on the outer wall upper portion of hexagonal prism, the sealed welding of hollow sleeve pipe's port has the apron, fill through a plurality of second expanding spring between the bottom of apron and the top of spacing plectane.

Preferably, wheel hub connecting device includes the circle track board, the vertical welding of the inner chamber central authorities of circle track board has the web that the center has the installation through-hole, the surperficial upper portion of web is equipped with the rectangle and leads to the groove, the even interval in both sides is equipped with the third spacing bolt about the front surface of circle track board, the inner chamber of circle track board slides and pegs graft and has a plurality of connecting plates of buckling, it is fixed through the third spacing bolt to buckle the inner of connecting plate, the outer end of the connecting plate of buckling is equipped with the ladder through-hole, and just buckles the outer end rear surface parallel and level of outer end rear surface and circle track board of.

Preferably, strutting arrangement includes interior hoop and outer hoop, and outer hoop welding is on driving pulley's inner wall, the outer wall of interior hoop is equipped with T type slide, the inner wall of outer hoop is equipped with the rectangle slide, the inner chamber of rectangle slide slides and pegs graft and has a plurality of rectangle sliders, T type slide inner chamber clearance fit has with rectangle slider equivalent T type slider, the outer surface welding of rectangle slider has the internal thread pipe, the surface rotation of T type slider is equipped with fourth stop bolt, and internal thread pipe and fourth stop bolt spiro union.

Preferably, the center of the rear surface of the rectangular iron plate is provided with a groove having the same cross section as that of the support pallet.

Preferably, a triangular rib plate is welded between the lower part of the outer wall of the internal thread sleeve and the surface of the supporting plate.

Preferably, frosting surfaces are arranged on the periphery of the edge opening of the rectangular through groove and the inner surface of the stepped through hole.

Preferably, the fourth limit bolt is rotatably fixed on the outer surface of the T-shaped sliding block through a spherical hinge.

Compared with the prior art, the invention has the beneficial effects that: the invention utilizes the folding guard plate to place a jack, reduces the pressure intensity by the principle of increasing the contact area, is convenient for jacking the automobile, removes the invaginated tire, rotates a hexagonal prism by a spanner, fixes the position by matching with a second limit bolt, sleeves a crawler on a driving belt wheel and a driving belt wheel, adjusts the height of a telescopic crank to tension the crawler, uses a stepped through hole and a rectangular through groove to match with a gasket connecting bolt to fix a round track plate at the position for installing the tire, then installs the folding guard plate again, limits the crawler by using a belt limiting device, installs the device on the driving wheel of the automobile, starts the automobile, uses a hub connecting device to rotate the driving belt wheel through a first bearing and a second bearing, forms a frame by a supporting shaft, the telescopic crank, a supporting plate, the folding guard plate and an installing rear plate, further forms a crawler running mechanism, reduces the slip and is convenient for the automobile to run on the, when the device is driven out of the hollow, the device is convenient to assemble, can be repeatedly used, does not wear the tire, and has increased trafficability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view of the folded sheet shown in FIG. 1;

FIG. 4 is a schematic view of the belt limiting device shown in FIG. 1;

FIG. 5 is a schematic view of the telescopic crank of FIG. 1;

FIG. 6 is a schematic view of the hub attachment arrangement of FIG. 1;

fig. 7 is a schematic structural view of the supporting device in fig. 1.

In the drawings, the components represented by the respective reference numerals are listed below:

1-mounting a rear plate, 2-folding guard plates, 3-supporting plates, 4-fixing shafts, 5-driving belt wheels, 6-first retaining rings, 7-belt limiting devices, 8-telescopic cranks, 9-supporting shafts, 10-first bearings, 11-second bearings, 12-hub connecting devices, 13-driving belt wheels, 14-supporting devices and 15-second retaining rings;

200-a rectangular iron plate, 201-a rectangular containing cavity, 202-a movable iron plate, 203-a first expansion spring, 204-a first limit bolt;

70-fixed ring, 71-conical tube, 72-connecting ring, 73-annular mounting groove, and 74-elastic telescopic rod. 75-limiting blind holes and 76-rubber columns;

80-an internal thread sleeve, 81-a supporting threaded rod, 82-a second limiting bolt, 83-a hexagonal prism, 84-a limiting circular plate, 85-a hollow sleeve, 86-a cover plate and 87-a second expansion spring;

120-a circular track plate, 121-a web plate, 122-a rectangular through groove, 123-a third limiting bolt, 124-a bent connecting plate and 125-a stepped through hole;

140-inner iron ring, 141-outer iron ring, 142-T-shaped slideway, 143-rectangular slideway, 144-T-shaped sliding block, 145-rectangular sliding block, 146-internal threaded pipe, 147-fourth limiting bolt.

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.

Referring to fig. 1-7, the present invention provides a technical solution: a new energy automobile pit self-rescue device comprises an installation rear plate 1, a folding guard plate 2, a support supporting plate 3, two groups of fixing shafts 4, two groups of driving belt wheels 5, a telescopic crank 8, a support shaft 9, a hub connecting device 12 and a driving belt wheel 13, wherein the support supporting plate 3 is horizontally welded in the center of the front surface of the installation rear plate 1, the folding guard plate 2 is fixed on the front surface of the support supporting plate 3 through screws, the two groups of fixing shafts 4 are symmetrically welded below the left side and the right side of the front surface of the installation rear plate 1, the front end of the fixing shaft 4 extends to the front surface of the folding guard plate 2 through a through hole, the driving belt wheels 5 are rotatably sleeved on the outer wall of the fixing shafts 4, first check rings 6 are coaxially welded on the rear surface of the driving belt wheels 5, belt limiting devices 7 are fixed on the left side and the right side of the rear surface of the folding guard plate 2 through, the telescopic crank 8 is vertically welded in the center of the front side of the upper surface of the supporting pallet 3;

the horizontal welding of outer wall top rear side of telescopic crank 8 has back shaft 9, first bearing 10 and second bearing 11 have been cup jointed to the outer wall rear side and the middle part of back shaft 9 respectively fixed, the outer wall welded sleeve of first bearing 10 has wheel hub connecting device 12, wheel hub connecting device 12's outer wall front side welded has driving pulley 13, be connected through strutting arrangement 14 between driving pulley 13's the inner wall and the outer wall of second bearing 11, the equal coaxial welding of terminal surface has second flange 15 around driving pulley 13, the coincidence of tip extension line around driving pulley 13 and the race of two sets of driving pulley 5.

The foldable protection plate 2 comprises a rectangular iron plate 200, rectangular containing cavities 201 are formed in the upper portion and the lower portion of the rectangular iron plate 200, movable iron plates 202 are inserted into inner cavities of the rectangular containing cavities 201 in a sliding mode, inner end faces of the movable iron plates 202 are connected with the bottom faces of the inner cavities of the rectangular containing cavities 201 through a plurality of first telescopic springs 203 which are evenly spaced, first limiting bolts 204 are screwed in the centers of the inner walls of openings of the rectangular containing cavities 201, the first limiting bolts 204 are attached to the outer end faces of the movable iron plates 202, the first limiting bolts 204 are detached through a wrench, the first telescopic springs 203 push the movable iron plates 202 to extend out of the rectangular containing cavities 201, meanwhile, the first telescopic springs 203 have a connecting effect, the whole unfolding area is increased, and automobile jacking operation can be conducted on sand or soft ground conveniently by means of placing jacks on automobiles on the tops of the foldable;

the belt limiting device 7 comprises a fixing ring 70 with a threaded through hole, a conical tube 71 is welded on the right side of the fixing ring 70, a connecting ring 72 is coaxially welded on the open end face of the conical tube 71, an annular mounting groove 73 is formed in the right surface of the connecting ring 72, a plurality of rubber columns 76 are annularly arrayed in the inner cavity of the annular mounting groove 73, elastic telescopic rods 74 are fixedly inserted between the two ends of the rubber columns 76 in a penetrating mode, limiting blind holes 75 are uniformly formed in the inner wall of the annular mounting groove 73 at intervals, the two ends of each elastic telescopic rod 74 are inserted into the inner cavity of the corresponding limiting blind hole 75, the rubber columns 76 are in contact with the outer side of the crawler, the rubber columns 76 rotate around the;

the telescopic crank 8 comprises an internal thread sleeve 80, a supporting threaded rod 81 is screwed in an inner cavity of the internal thread sleeve 80, a second limiting bolt 82 is screwed in the upper portion of the outer wall of the internal thread sleeve 80 in a penetrating mode, a hexagonal prism 83 is welded at the top end of the supporting threaded rod 81, a limiting circular plate 84 is welded at the top end of the hexagonal prism 83, a hollow sleeve 85 is sleeved on the upper portion of the outer wall of the hexagonal prism 83 through a hexagonal hole, a cover plate 86 is welded at a port of the hollow sleeve 85 in a sealing mode, a plurality of second telescopic springs 87 are filled between the bottom of the cover plate 86 and the top of the limiting circular plate 84, the hexagonal prism 83 is rotated by a wrench and fixed in position by matching with the second limiting bolt 82, a supporting shaft 9 is;

the hub connecting device 12 comprises a circular track plate 120, a web plate 121 with a mounting through hole in the center is vertically welded in the center of an inner cavity of the circular track plate 120, a rectangular through groove 122 is arranged on the upper portion of the surface of the web plate 121, third limiting bolts 123 are evenly arranged on the left side and the right side of the front surface of the circular track plate 120 at intervals, a plurality of bending connecting plates 124 are inserted into the inner cavity of the circular track plate 120 in a sliding mode, the inner ends of the bending connecting plates 124 are fixed through the third limiting bolts 123, stepped through holes 125 are formed in the outer ends of the bending, and the rear surface of the outer end of the bent connection plate 124 is flush with the rear surface of the circular track plate 120, the existing tires of automobiles are mostly connected by 4, 5 or more bolts which are uniformly distributed, the number of the bent connecting plates 124 matched with the third limiting bolts 123 is selected according to actual conditions, meanwhile, the length of the selected bending connecting plate 124 is adjusted, and the stepped through hole 125 and the rectangular through groove 122 are used for matching with a gasket connecting bolt;

the supporting device 14 comprises an inner iron ring 140 and an outer iron ring 141, the outer iron ring 141 is welded on the inner wall of the driving pulley 13, the outer wall of the inner iron ring 140 is provided with a T-shaped slide rail 142, the inner wall of the outer iron ring 141 is provided with a rectangular slide rail 143, the inner cavity of the rectangular slide rail 143 is inserted with a plurality of rectangular slide blocks 145 in a sliding manner, the inner cavity of the T-shaped slide rail 142 is in clearance fit with a T-shaped slide block 144 which is equal to the rectangular slide block 145, the outer surface of the rectangular slide block 145 is welded with an internal threaded pipe 146, the outer surface of the T-shaped slide block, and the internal threaded tube 146 is screwed with the fourth limit bolt 147, the fourth limit bolt 147 is rotated by a wrench to be propped against the T-shaped sliding block 144, the support function of the outer iron ring 141 and the driving pulley 13 is further achieved, the T-shaped sliding block 144 in clearance fit can move in the inner cavity of the T-shaped slideway 142, the position is adjusted, and a screwdriver can conveniently extend into the connecting device 12 of the hub and a connecting threaded hole on an automobile to be connected through a bolt;

the center of the rear surface of the rectangular iron plate 200 is provided with a groove with the same cross section as that of the supporting plate 3; the positioning and installation are convenient, and a triangular rib plate is welded between the lower part of the outer wall of the internal thread sleeve 80 and the surface of the support pallet 3; the stress fracture is prevented, the strength is increased, and the periphery of the edge of the rectangular through groove 122 and the inner surface of the stepped through hole 125 are provided with frosted surfaces; the fourth limiting bolt 147 is firmly connected with the locking bolt, the fourth limiting bolt 147 is rotatably fixed on the outer surface of the T-shaped sliding block 144 through the spherical hinge, the head of the fourth limiting bolt 147 is welded with the rotating ball of the spherical hinge, the supporting seat is welded on the outer surface of the T-shaped sliding block 144, and the head of the fourth limiting bolt 147 is exposed, so that the adjustment is convenient.

One specific application of this embodiment is: the folding guard plate 2 is disassembled by disassembling the support supporting plate 3 and the folding guard plate 2 and the screws of the belt limiting device 7 and the folding guard plate 2, the first limiting bolt 204 is disassembled to extend the movable iron plates 202 at two sides to increase the unfolding area, the jack of the automobile is placed at the top of the folding guard plate 2, the folding guard plate 2 is placed on the sand or soft ground, the pressure is reduced by utilizing the principle of increasing the contact area to be convenient for jacking the automobile, the sunken tire is disassembled, the hexagonal prism 83 is rotated by a spanner to be matched with the second limiting bolt 82 to carry out fixing position, the crawler belt is sleeved on the driving belt wheel 13 and the driving belt wheel 5, the height of the telescopic crank 8 is adjusted to tension the crawler belt, the stepped through hole 125 and the rectangular through groove 122 are used for being matched with a gasket connecting bolt to fix the circular track plate 120 at the position for installing the tire, then the folding guard plate 2 is re-installed, and the crawler, the device is arranged on a driving wheel of an automobile to start the automobile, the driving belt wheel 13 is rotated by the hub connecting device 12 through the first bearing 10 and the second bearing 11, the support shaft 9, the telescopic crank 8, the support supporting plate 3, the folding guard plate 2 and the mounting rear plate 1 form a frame, and then a crawler walking mechanism is formed, so that the slippage is reduced, the automobile can conveniently run on sand or soft ground and can run out of a hollow.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a new energy automobile equipment of saving oneself in pit, includes installation back plate (1), folding backplate (2), supporting plate (3), two sets of fixed axle (4), two sets of driving pulley (5), flexible crank (8), back shaft (9), wheel hub connecting device (12) and driving pulley (13), its characterized in that: the supporting plate (3) is horizontally welded at the center of the front surface of the mounting rear plate (1), the folding guard plate (2) is fixed on the front surface of the supporting splint (3) through screws, two groups of fixing shafts (4) are symmetrically welded below the left side and the right side of the front surface of the mounting rear plate (1), the front end of the fixed shaft (4) extends to the front surface of the folding protection plate (2) through the through hole, the transmission belt wheel (5) is rotatably sleeved on the outer wall of the fixed shaft (4), a first check ring (6) is coaxially welded on the rear surface of the transmission belt wheel (5), the left side and the right side of the rear surface of the folding guard plate (2) are fixed with belt limiting devices (7) through screws, the belt limiting device (7) is sleeved at the front end of the fixed shaft (4) and is attached to the front surface of the transmission belt wheel (5), the telescopic crank (8) is vertically welded in the center of the front side of the upper surface of the support supporting plate (3);

the utility model discloses a telescopic crank's (8) outer wall top rear side horizontal welding has back shaft (9), the outer wall rear side and the middle part of back shaft (9) are fixed respectively and have been cup jointed first bearing (10) and second bearing (11), the outer wall welded sleeve of first bearing (10) has wheel hub connecting device (12), wheel hub connecting device's (12) outer wall front side welded has driving pulley (13), be connected through strutting arrangement (14) between the inner wall of driving pulley (13) and the outer wall of second bearing (11), the equal coaxial welding of terminal surface has second retaining ring (15) around driving pulley (13), the coincidence of tip extension line around the race of driving pulley (13) and two sets of driving pulley (5).

2. The new energy automobile pit-trapping self-rescue device as claimed in claim 1, characterized in that: folding backplate (2) include rectangle iron plate (200), the upper portion and the lower part of rectangle iron plate (200) all are equipped with the rectangle and hold chamber (201), the rectangle holds the inner chamber cooperation of chamber (201) and slides and pegs graft and have removal iron plate (202), the inner terminal surface of removing iron plate (202) and the rectangle hold the inner chamber bottom surface of chamber (201) and be connected through a plurality of evenly spaced first expanding spring (203), the rectangle holds the opening inner wall central spiro union in chamber (201) has first stop bolt (204), first stop bolt (204) and the outer terminal surface laminating of removing iron plate (202).

3. The new energy automobile pit-trapping self-rescue device as claimed in claim 1, characterized in that: belt stop device (7) are including solid fixed ring (70) of threaded through-hole, the right side welding of solid fixed ring (70) has conical tube (71), the coaxial welding of uncovered terminal surface of conical tube (71) has go-between (72), the right surface of go-between (72) is equipped with annular mounting groove (73), the inner chamber annular array of annular mounting groove (73) has a plurality of rubber columns (76), it has elastic telescopic rod (74) to run through fixed grafting between the both ends of rubber column (76), the even interval of inner wall of annular mounting groove (73) is equipped with spacing blind hole (75), and the inner chamber of grafting at spacing blind hole (75) in the both ends of elastic telescopic rod (74).

4. The new energy automobile pit-trapping self-rescue device as claimed in claim 1, characterized in that: telescopic crank (8) include internal thread sleeve (80), the inner chamber spiro union of internal thread sleeve (80) has supporting threaded rod (81), the outer wall upper portion of internal thread sleeve (80) runs through the spiro union and has second limit bolt (82), the top welding of supporting threaded rod (81) has hexagonal prism (83), the top welding of hexagonal prism (83) has spacing plectane (84), hollow sleeve (85) have been cup jointed through hexagonal hole on the outer wall upper portion of hexagonal prism (83), the port sealing weld of hollow sleeve (85) has apron (86), fill through a plurality of second expanding spring (87) between the bottom of apron (86) and the top of spacing plectane (84).

5. The new energy automobile pit-trapping self-rescue device as claimed in claim 1, characterized in that: wheel hub connecting device (12) are including circle track board (120), the vertical welding of the inner chamber central authorities of circle track board (120) has web (121) that the center has the installation through-hole, the surperficial upper portion of web (121) is equipped with rectangle through groove (122), the even interval in both sides is equipped with third stop bolt (123) about the front surface of circle track board (120), the inner chamber of circle track board (120) slides and pegs graft and has a plurality of connecting plates (124) of buckling, it is fixed through third stop bolt (123) to buckle the inner of connecting plate (124), the outer end of buckling connecting plate (124) is equipped with ladder through-hole (125), and just buckles the outer end rear surface parallel and level of outer end rear surface and circle track board (120) of connecting plate (124).

6. The new energy automobile pit-trapping self-rescue device as claimed in claim 1, characterized in that: the supporting device (14) comprises an inner iron ring (140) and an outer iron ring (141), the outer iron ring (141) is welded on the inner wall of the driving pulley (13), the outer wall of the inner iron ring (140) is provided with a T-shaped slide way (142), the inner wall of the outer iron ring (141) is provided with a rectangular slide way (143), the inner cavity of the rectangular slide way (143) is inserted with a plurality of rectangular slide blocks (145) in a sliding mode, the inner cavity of the T-shaped slide way (142) is in clearance fit with the T-shaped slide blocks (144) with the same quantity as the rectangular slide blocks (145), the outer surface of each rectangular slide block (145) is welded with a pipe (146) with an internal thread, the outer surface of each T-shaped slide block (144) rotates to be provided with a fourth limiting bolt (147), and the internal thread pipe (146.

7. The new energy automobile pit-trapping self-rescue device as claimed in claim 2, characterized in that: the center of the rear surface of the rectangular iron plate (200) is provided with a groove which has the same cross section with the supporting splint (3).

8. The new energy automobile pit-trapping self-rescue device as claimed in claim 4, characterized in that: a triangular rib plate is welded between the lower part of the outer wall of the internal thread sleeve (80) and the surface of the supporting plate (3).

9. The new energy automobile pit-trapping self-rescue device as claimed in claim 5, characterized in that: the periphery of the edge opening of the rectangular through groove (122) and the inner surface of the stepped through hole (125) are provided with frosting surfaces.

10. The new energy automobile pit-trapping self-rescue device as claimed in claim 6, characterized in that: the fourth limiting bolt (147) is rotatably fixed on the outer surface of the T-shaped sliding block (144) through a spherical hinge.