CN210191670U

CN210191670U - External device of tire

Info

Publication number: CN210191670U
Application number: CN201920399162.5U
Authority: CN
Inventors: Liwen Zhang; 张力文; Xiaodong Wang; 王晓东
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-03-27
Anticipated expiration: 2029-03-27

Abstract

The utility model relates to an external device of tire, including track subassembly, two at least power wheels, two backplates and last supporting component, the track subassembly presss from both sides and is established between two backplate lower extremes and is connected with two backplates respectively, and the both ends of power wheel rotate with two backplates respectively and are connected, and the power wheel is connected and transmits power with automobile tire and track subassembly looks butt respectively, goes up the supporting component and is connected and the cover is established in the automobile tire outside with two backplate upper ends respectively. The external device of tire is established in the tire outside through last supporting component cover, prevents that the device from droing at the in-process of jolting. The power wheel is respectively connected with the circumferential surface of the automobile tire and the crawler assembly, and the rotation of the automobile tire is transferred to the crawler assembly by friction force. The contact area of the track assembly and the ground is large, the ground grabbing force is strong, and the vehicle can well run in snow and muddy road conditions. The external tire connecting device is convenient to mount and dismount, is directly sleeved on the outer side of an automobile tire, and does not need to dismount the original tire.

Description

External device of tire

Technical Field

The utility model relates to a track device field of traveling, concretely relates to external device of tire.

Background

Under the road conditions that automobiles are not easy to walk, such as snowfields or deserts, tires are generally required to be replaced, then the triangular crawler belt is installed, the installation is inconvenient, the tires of the original automobiles are also placed, and if no equipment is installed in an application place, the installation and the application of the triangular crawler belt equipment are difficult. At present, no walking auxiliary equipment which is suitable for snowfield or desert road sections and is convenient to install is available in China.

The technical personnel in the field need a tire external device urgently, under the prerequisite that realizes the purpose of snowfield walking, easy to assemble need not dismantle the tire, if use the pick up, still can realize pulling away along with the car to the effect that uses place is using, does not influence the legal way of going of vehicle when not installing.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a tire external device convenient to dismouting is used is provided.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides an external device of tire, includes track subassembly, two at least power wheels, two backplate and goes up supporting component, the track subassembly presss from both sides the lower extreme of establishing between two the backplate and is connected with two the backplate respectively, the both ends of every power wheel respectively with two the backplate rotates to be connected, the power wheel respectively with automobile tire and track subassembly looks butt and transmission power, go up supporting component respectively with two the upper end of backplate is connected and the cover is established in the automobile tire outside.

The utility model has the advantages that: the external device of tire is established in the tire outside through last supporting component cover, prevents that the device from droing at the in-process of jolting. The power wheel is respectively connected with the circumferential surface of the automobile tire and the crawler assembly, and the rotation of the automobile tire is transferred to the crawler assembly by friction force. The contact area of the track assembly and the ground is large, the ground grabbing force is strong, and the vehicle can well run on snow or wet and slippery road conditions. The external device of tire is convenient to install and dismantle, is directly sleeved on the outer side of the automobile tire, does not need to dismount the original tire, does not need to attach other fixing parts or connecting parts on the wheel or the automobile body, and provides great convenience for installation and use.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, each guard plate comprises an upper guard plate and a lower guard plate, and the lower end of the upper guard plate is detachably connected with the upper end of the lower guard plate; the crawler assembly is clamped between the two lower protection plates and is respectively connected with the two lower protection plates, two ends of each power wheel are respectively rotatably connected with the two lower protection plates, and the upper supporting assembly is respectively connected with the upper ends of the two upper protection plates.

The beneficial effect of adopting the further scheme is that: can adjust the interval between two upper protective plates according to the size of tire is nimble during the use, make the utility model discloses an external device of tire can be applicable to various motorcycle types.

Further, the track assembly comprises at least two thrust wheels, at least two auxiliary wheels and a track, the track is sleeved on the outer sides of the thrust wheels and the auxiliary wheels, two ends of the thrust wheels are respectively connected with two lower ends of the guard plates in a rotating mode, and the auxiliary wheels and the power wheels are arranged on the inner side and the outer side of the track in a one-to-one correspondence mode.

The beneficial effect of adopting the further scheme is that: the thrust wheel is connected with the lower end of the guard plate to support the weight of the automobile, and the auxiliary wheel and the power wheel are correspondingly arranged to enable the crawler to be clamped between the auxiliary wheel and the power wheel, so that the power of the automobile tire can be transmitted to the crawler.

Furthermore, the track assembly further comprises at least one tensioning assembly, two ends of the tensioning assembly are respectively connected with the two guard plates, and the side wall of the tensioning assembly is abutted against the inner side of the track.

The beneficial effect of adopting the further scheme is that: the tensioning assembly is used for tensioning the track, so that fatigue and looseness of the track are avoided, and the track is always attached to the thrust wheel and the power wheel.

Further, the tensioning assembly comprises a tensioning wheel and two tensioners, two ends of the tensioning wheel are respectively connected with the guard plate through the tensioners, and the tensioners adjust the relative positions of the tensioning wheel and the guard plate and tension the track.

The beneficial effect of adopting the further scheme is that: the tensioning degree of take-up pulley can be adjusted in a flexible way to tensioning ware, adjusts the position of take-up pulley according to the elasticity condition of track in the use.

Further, the tensioner comprises a screw rod and an adjusting block, the guard plate is provided with a strip-shaped hole, the screw rod is arranged on the outer side of the guard plate corresponding to the strip-shaped hole, the adjusting block is provided with a threaded hole matched with the screw rod, and the adjusting block is sleeved on the outer side of the screw rod and is in threaded connection with the screw rod; the end part of the tensioning wheel penetrates through the strip-shaped hole to be rotatably connected with the adjusting block, and the side wall of the tensioning wheel is abutted against the inner side of the crawler.

The beneficial effect of adopting the further scheme is that: when the screw rod is rotated, the adjusting block moves along with the rotation of the screw rod, so that the tensioning wheel is driven to move, and the track is tensioned.

Further, go up supporting component and include two side supporting component and at least one gyro wheel, two side supporting component is respectively with two the upper end of backplate is connected, the both ends of gyro wheel respectively with two side supporting component rotates and is connected.

The beneficial effect of adopting the further scheme is that: the roller contacts with the upper circumference of the automobile tyre to reduce the resistance caused by the friction force. The two side supporting components are respectively positioned on two sides of two end faces of the automobile tire, and the side supporting components and the rollers are jointly sleeved on the upper portion of the tire to ensure that the tire external connection device cannot fall off when the tire meets a pothole on the road surface.

Furthermore, the side supporting component comprises an upper pulling plate and two pull rods, and two ends of the upper pulling plate are respectively connected with two sides of the upper end of the protection plate through the pull rods.

The beneficial effect of adopting the further scheme is that: the side supporting component comprises an upper pulling plate and two pulling rods which are connected with each other, the connecting part of the upper pulling plate and the pulling rods can move properly, and the side supporting component which is integrated is prevented from being large in rigidity and easy to damage.

The automobile tire protection device is characterized by further comprising a guide wheel, wherein the protection plate is provided with a guide wheel groove, the guide wheel is embedded in the guide wheel groove and is rotationally connected with the protection plate, and the guide wheel is abutted against the side face of an automobile tire.

The beneficial effect of adopting the further scheme is that: the guide wheel prevents the direct friction between the automobile tire and the guard plate, and can more flexibly adjust and correct the direction of the external device of the tire when the automobile turns.

Furthermore, the safety guard plate comprises at least one cross-pull rod, and two ends of the cross-pull rod are fixedly connected with the two guard plates respectively.

The beneficial effect of adopting the further scheme is that: the tie rod strengthens the connection between the two guard plates, avoids the separation of the two guard plates under the pressure of automobile tire steering, and enhances the integrity of the equipment.

The automobile comprises the tire external connection device, wherein the tire external connection device and the automobile tire are arranged in a one-to-one correspondence mode and sleeved on the outer side of the automobile tire.

Drawings

FIG. 1 is a side perspective view of a front wheel assembly of a tire attachment apparatus of the present invention;

fig. 2 is a schematic three-dimensional structure diagram of a front wheel device of the tire external device of the present invention;

FIG. 3 is a front view of a front wheel assembly of the tire attachment apparatus of the present invention;

FIG. 4 is a side perspective view of a rear wheel assembly of the tire attachment apparatus of the present invention;

fig. 5 is a schematic three-dimensional structure diagram of a rear wheel device of the tire external device of the present invention;

FIG. 6 is a front view of a rear wheel assembly of the tire attachment apparatus of the present invention;

fig. 7 is a schematic structural diagram of a tensioning assembly of the external tire mounting device of the present invention.

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

1. crawler assembly, 101, thrust wheel, 102, auxiliary wheel, 103, track, 104, tensioning assembly, 1041, take-up pulley, 1042, lead screw, 1043, regulating block, 2, power wheel, 3, backplate, 301, go up the backplate, 302, backplate down, 4, go up supporting component, 401, collateral branch supporting component, 4011, last arm-tie, 4012, pull rod, 402, gyro wheel, 5, guide pulley, 6, drag link.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 6, the tire external connection device includes a track assembly 1, at least two power wheels 2, two protection plates 3 and an upper support assembly 4, wherein the track assembly 1 is clamped at a lower end between the two protection plates 3 and is respectively connected with the two protection plates 3, two ends of the power wheel 2 are respectively rotatably connected with the two protection plates 3, the power wheels 2 are respectively abutted against an automobile tire and the track assembly 1 and transmit power, and the upper support assembly 4 is respectively connected with upper ends of the two protection plates 3 and is sleeved outside the automobile tire.

Specifically, as shown in fig. 3 and 6, the upper edge of the protector plate 3 on the inner side of the tire outer attachment is 5 to 6 cm lower than the upper edge of the protector plate 3 on the outer side. The inner side of the external tire connecting device, namely the side of the external tire connecting device close to the automobile body after being installed on the automobile, the guard plate 3 on the outer side is higher than the guard plate on the inner side, so that impurities such as external silt can be prevented from being drawn into the automobile tire, and meanwhile, the effect of protecting the tire and ensuring the connection stability of the device and the tire can be achieved.

Specifically, as shown in fig. 1 to 6, the power wheel 2 includes a power wheel rotating shaft and a power wheel main body, two ends of the power wheel rotating shaft are respectively and fixedly connected with the two guard plates, and the power wheel main body is sleeved on the outer side of the power wheel rotating shaft and rotates relative to the power wheel rotating shaft. The power wheel main body is cylindrical, as shown in fig. 1-6, in order to increase the friction force between the power wheel main body and the automobile tire, transmission teeth are uniformly and fixedly connected to the outer circumferential surface of the power wheel main body along the circumferential direction, the transmission teeth are sheet-shaped, and the transmission teeth are matched with the automobile tire and the outer side of the track to provide power along the tangential direction of the power wheel. In order to increase the friction force between the power wheel main body and the automobile tire, the power wheel main body can also be arranged into a cylindrical shape with anti-skid patterns on the outer surface.

Preferably, the number of the power wheels 2 is two, and as shown in the directions of fig. 1 and 4, the two power wheels 2 are respectively arranged at the left side and the right side of the position shown in the figure and are rotatably connected with the guard plate 3.

As a further scheme of this embodiment, each of the protection plates 3 includes an upper protection plate 301 and a lower protection plate 302, and a lower end of the upper protection plate 301 is detachably connected to an upper end of the lower protection plate 302; the crawler assembly 1 is clamped between the two lower protection plates 302 and is respectively connected with the two lower protection plates 302, two ends of each power wheel 2 are respectively rotatably connected with the two lower protection plates 302, and the upper support assembly 4 is respectively connected with the upper ends of the two upper protection plates 301.

As a further scheme of this embodiment, the track assembly 1 includes at least two thrust wheels 101, at least two auxiliary wheels 102, and a track 103, the track 103 is sleeved on the outer sides of the thrust wheels 101 and the auxiliary wheels 102, two ends of the thrust wheels 101 are respectively rotatably connected with the lower ends of the two guard plates 3, and the auxiliary wheels 102 and the power wheels 2 are arranged on the inner side and the outer side of the track 103 in a one-to-one correspondence manner.

Specifically, two ends of the thrust wheel 101 are respectively rotatably connected with the two lower protection plates 302.

Specifically, as shown in fig. 1 and 4, the number of the thrust wheels 101 is 6, the axes of the 6 thrust wheels 101 are parallel to each other and on the same horizontal plane, and the axis of the thrust wheel 101 is parallel to the axis of the automobile tire.

Specifically, each thrust wheel 101 includes a thrust wheel pivot and two thrust wheel main parts, and the both ends of thrust wheel pivot are respectively with two backplate 302 fixed connection, and two thrust wheel main parts overlap in proper order and establish in the thrust wheel pivot outside to relative thrust wheel pivot rotates, and two thrust wheel main parts are spacing through the gasket or the dog that the cover was established in the thrust wheel pivot. The thrust wheel main body is cylindrical.

Specifically, the auxiliary wheel 102 includes an auxiliary wheel rotating shaft and two auxiliary wheel main bodies, two ends of the auxiliary wheel rotating shaft are respectively and fixedly connected with the two lower protection plates 302, the two auxiliary wheel main bodies are sequentially sleeved on the outer side of the auxiliary wheel rotating shaft and rotate relative to the auxiliary wheel rotating shaft, and the two auxiliary wheel main bodies are limited by a gasket or a stop block sleeved on the auxiliary wheel rotating shaft. The auxiliary wheel main body is cylindrical.

Preferably, there are two auxiliary wheels 102, the power wheel 2 is disposed above the crawler belt 103 and is in contact with the crawler belt, and the auxiliary wheels 102 are disposed inside the crawler belt 103 corresponding to the power wheel 2. As shown in fig. 1 and 4, the auxiliary wheel 102 is located outside the power wheel 2, the upper end of the auxiliary wheel 102 is higher than the lower end of the power wheel 2, the auxiliary wheel 102 and the power wheel 2 tension the crawler 103 located therebetween, the automobile tire drives the power wheel 2 to rotate through friction, and the power wheel 2 drives the crawler 103 to move through friction.

Specifically, the lower end of the upper guard plate 301 is provided with an upper guard plate connecting hole, the upper end of the lower guard plate 302 is provided with a lower guard plate connecting hole, the lower guard plate 302 is sleeved on the auxiliary wheel rotating shaft through the lower guard plate connecting hole, the upper guard plate 301 is sleeved on the auxiliary wheel rotating shaft through the upper guard plate connecting hole, and the upper guard plate 301 is arranged on the outer side of the lower guard plate 302. Still the cover is equipped with the adjusting shim on the auxiliary wheel pivot, the adjusting shim presss from both sides and locates go up backplate 301 with between the backplate 302 down for adjust the interval between two last backplate 301, make this device be applicable to the tire of various models. And a limiting check ring is further sleeved on the auxiliary wheel rotating shaft and arranged on the outer side of the upper protection plate 301.

Specifically, the outer side of the crawler belt 103 has anti-slip patterns, the shape of the anti-slip patterns can be changed according to the environment of the used area, and different crawler belt patterns can be used in different places.

As a further solution of this embodiment, the track assembly 1 further includes at least one tensioning assembly 104, two ends of the tensioning assembly 104 are respectively connected to the two guard plates 3, and a side wall of the tensioning assembly 104 abuts against an inner side of the track 103.

Specifically, two ends of the tensioning assembly 104 are respectively connected to the two lower protection plates 302. Tensioning assembly 104 makes the track tensioning, guarantees that track and power wheel are laminated mutually, increases frictional force, guarantees the transmission effect.

As a further scheme of this embodiment, the tensioning assembly 104 includes a tensioning wheel 1041 and two tensioners, both ends of the tensioning wheel 1041 are respectively connected with the guard plate 3 through the tensioners, and the tensioners adjust the relative positions of the tensioning wheel 1041 and the guard plate 3 and tension the track 103.

As a further scheme of this embodiment, the tensioner includes a screw rod 1042 and an adjusting block 1043, the guard plate 3 has a strip-shaped hole, the screw rod 1042 is disposed on an outer side of the guard plate 3 corresponding to the strip-shaped hole, the adjusting block 1043 has a threaded hole adapted to the screw rod 1042, and the adjusting block 1043 is sleeved on the outer side of the screw rod 1042 and is in threaded connection with the screw rod 1042; the end of the tension wheel 1041 penetrates through the strip-shaped hole to be rotatably connected with the adjusting block 1043, and the side wall of the tension wheel 1041 abuts against the inner side of the crawler 103.

Specifically, take-up pulley 1041 includes fixed connection's take-up pulley pivot and take-up pulley main part, and the both ends of take-up pulley pivot rotate with two regulating blocks 1043 respectively and be connected, and the take-up pulley main part cover is established in the take-up pulley pivot outside, and the take-up pulley main part is cylindric. The adjusting block 1043 has a cylindrical rotating groove adapted to the rotating shaft of the tensioning wheel, and the end of the rotating shaft of the tensioning wheel is inserted into the cylindrical rotating groove and rotates relative to the cylindrical rotating groove, so that the rotating shaft of the tensioning wheel is rotatably connected with the two adjusting blocks 1043.

Specifically, as shown in fig. 7, the tensioner further includes a fixing bracket, the fixing bracket is fixedly connected to the guard plate 3, the fixing bracket is a rectangular frame, as shown in fig. 2, two opposite side walls of the fixing bracket have through holes adapted to the screw 1042, two ends of the screw 1042 are inserted into the two through holes of the fixing bracket and rotate relative to the fixing bracket, one end of the screw 1042 is fixedly connected to an adjusting portion, and the screw can rotate by rotating the adjusting portion. The adjusting block 1043 is sleeved outside the screw rod 1042 and is in threaded connection with the screw rod 1042, the adjusting block 1043 is clamped inside the fixing support, specifically, the adjusting block 1043 is a cylinder, the outer diameter of the adjusting block 1043 is matched with the width of the inner side of the fixing support, that is, the adjusting block 1043 can only move in the fixing support and cannot rotate relative to the fixing support. The lower guard plate 302 has a strip-shaped hole for the movement of the tension wheel rotating shaft.

As a further scheme of this embodiment, the upper supporting component 4 includes two side supporting components 401 and at least one roller 402, the two side supporting components 401 are respectively connected with the upper ends of the two protection plates 3, and two ends of the roller 402 are respectively rotatably connected with the two side supporting components 401.

Specifically, the two side support assemblies 401 are respectively connected to the two upper protection plates 301.

Specifically, the number of the rollers 402 is 2, each roller 402 includes a roller rotating shaft and a roller main body, two ends of each roller rotating shaft are respectively and fixedly connected with the two side supporting assemblies 401, and each roller main body is sleeved on the outer side of each roller rotating shaft and rotates relative to the roller rotating shaft. The roller main body is cylindrical.

As a further scheme of this embodiment, the side support assembly 401 includes an upper pulling plate 4011 and two pulling rods 4012, and both ends of the upper pulling plate 4011 are respectively connected to both sides of the upper end of the guard plate 3 through the pulling rods 4012.

Specifically, as shown in fig. 1 to 6, the pull rod 4012 is connected to the upper protection plate 301, and may be: the pull rod 4012 is in a cylindrical rod shape, threads are arranged at the lower end of the pull rod 4012, the fixed block is provided with a threaded hole matched with the pull rod 4012, the lower end of the pull rod 4012 is in threaded connection with the fixed block, and the fixed block is connected with the guard plate 3 through screws; the connection mode can also be that a draw hook is fixed at the lower end of the draw rod, the upper guard plate 301 is provided with a draw hook hole matched with the draw hook, and the draw hook passes through the draw hook hole to realize the connection of the draw rod 4012 and the upper guard plate 301; the connection mode can also be other connection modes which can realize the connection of the rod-shaped part and the plate-shaped part.

Specifically, as shown in fig. 1 to 6, the pull rod 4012 is connected to the upper pull plate 4011, and may be: the upper end of the pull rod 4012 is provided with threads, the upper fixed block is provided with a threaded hole matched with the pull rod 4012, the upper end of the pull rod 4012 is in threaded connection with the upper fixed block, and the upper fixed block is connected with an upper pull plate 4011 through screws; the connection mode can also be that a draw hook is fixed at the upper end of the draw rod, the upper pulling plate 4011 is provided with an upper pulling hook hole matched with the draw hook, and the draw hook passes through the upper pulling hook hole to realize the connection of the draw rod 4012 and the upper pulling plate 4011; the connection mode can also be other connection modes which can realize the connection of the rod-shaped part and the plate-shaped part.

Specifically, as shown in fig. 1 to 6, the upper pulling plate 4011 is a circular arc plate, and the pulling rod 4012 is a cylindrical rod.

Specifically, as shown in fig. 1 to 7, the device further includes two horizontal upper pull rods, the two horizontal upper pull rods are cylindrical and parallel to the axis of the roller 402, two ends of the horizontal upper pull rod are provided with threads, the upper fixing block is provided with threaded holes adapted to the horizontal upper pull rod, and two ends of the horizontal upper pull rod are respectively in threaded connection with the two upper fixing blocks which are oppositely arranged.

As a further scheme of this embodiment, the automobile tire protection device further includes a guide wheel 5, the protection plate 3 has a guide wheel groove, the guide wheel 5 is embedded in the guide wheel groove and is rotatably connected with the protection plate 3, and the guide wheel 5 abuts against a side surface of an automobile tire.

Specifically, the upper protection plate 301 has a guide wheel groove, and the guide wheel 5 is embedded in the guide wheel groove and is rotatably connected with the upper protection plate 301.

Specifically, the guide wheel 5 includes a guide wheel rotating shaft and a guide wheel main body, two ends of the guide wheel rotating shaft are respectively fixedly connected with two sides of the guide wheel groove, and the guide wheel main body is sleeved on the outer side of the guide wheel rotating shaft and rotates relative to the guide wheel rotating shaft. The guide wheel main body is cylindrical.

Specifically, the axis of the guide wheel 5 is arranged along the radial direction of the vehicle tyre, that is, the moving direction of the position where the guide wheel 5 is contacted with the tyre plane is the same as the moving direction of the tyre at the point.

As a further scheme of this embodiment, the safety guard further includes at least one tie rod 6, and both ends of the tie rod 6 are respectively fixedly connected to the two guard plates 3.

Specifically, two ends of the tie rod 6 are respectively and fixedly connected with the two upper protection plates 301.

The external device of tire can be generally used in front wheel and rear wheel, also can adjust according to the actual accommodation space difference of front and rear wheels.

Specifically, as shown in fig. 1 to 3, in the front wheel outer mounting device, there are 6

guide wheels

5, 3 guide wheels 5 are provided on each guard plate 3, and the 3 guide wheels 5 on each guard plate 3 are uniformly distributed in the circumferential direction. The axis of each guide wheel 5 is arranged along the radial direction of the automobile tyre.

Specifically, as shown in fig. 4 to 6, in the rear wheel outer mounting device, preferably, there are 5

guide wheels

5, 2 guide wheels 5 are provided on the

inner guard plate

3, 3 guide wheels 5 are provided on the outer guard plate 3, and the 3 guide wheels 5 on each guard plate 3 are uniformly distributed in the circumferential direction. The axis of each guide wheel 5 is arranged along the radial direction of the automobile tyre. The number of the guide wheels 5 in the rear wheel device can be adjusted according to the size of the wheel, when the size of the tire is larger, 6 guide wheels 5 can be selected, and the arrangement mode of the guide wheels 5 is the same as that of the front wheel device. Preferably, the lower end of the pull rod 4012 is connected to a tie rod 6.

The utility model relates to an external device's of tire mounting means:

if the folding small-slope ladder is carried with the vehicle, the following installation mode can be adopted. 1) Installing two front wheel external devices: removing 4 said tie rods 4012 on each apparatus, placing the track assemblies 1, power wheels 2, fender 3, guide wheels 5 and tie rods 6 in the apparatus as a unit directly on the ground in front of the front wheels; 2) two folding small slope ladders carried with the vehicle are unfolded and are lapped between the front wheel and the external device of the front wheel, the vehicle is directly driven to the device until the tire is positioned between the two power wheels, and the process of manually operating the jack is omitted; 3) the upper pulling plate 4011 and the roller 402 are sleeved above the tire as a whole; 4) 4, installing the pull rods 4012; 5) installing two rear wheel external devices: the 4 pull rods 4012 on each device are disassembled, and the crawler assemblies 1, the power wheels 2, the guard plates 3, the guide wheels 5 and the cross pull rods 6 in the device are directly placed on the ground behind the rear wheels as a whole; 6) two folding small-slope ladders carried with the vehicle are unfolded and respectively lapped between the rear wheel and the external device of the rear wheel, and the vehicle is directly driven on the device until the tire is positioned between the two power wheels; 7) the upper pulling plate 4011 and the roller 402 are sleeved above the tire as a whole; 8) 4 pull rods 4012 are installed.

If the jack is carried on the vehicle, the following installation modes can be adopted: 1) lifting the automobile by using a jack; 2) 4 pull rods 4012 are disassembled, a crawler assembly 1, power wheels 2, a guard plate 3, a guide wheel 5 and a transverse pull rod 6 in the device are directly placed below a tire as a whole, and the two power wheels 2 are respectively positioned at the front side and the rear side of the traveling direction of the tire; 3) the upper pulling plate 4011 and the roller 402 are sleeved above the tire as a whole; 4) 4, installing the pull rods 4012; 5) mounting 4 tire-circumscribing devices to the outside of the 4 tires in the same manner; the jack is removed.

The utility model discloses an external device installation of tire is dismantled conveniently, directly cup joints in automobile tire's the outside, need not lift original tire off, also need not attach all the other mounting or connecting piece on wheel or automobile body, provides very big facility for the installation is used.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. indicate the orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The term "fixed connection" may be a weld or a fixed connection by screws. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides an external device of tire, its characterized in that includes track subassembly (1), two at least power wheels (2), two backplate (3) and goes up supporting component (4), track subassembly (1) press from both sides and establish two lower extreme between backplate (3) and respectively with two backplate (3) are connected, the both ends of every power wheel (2) respectively with two backplate (3) rotate to be connected, power wheel (2) respectively with automobile tire and crawler component (1) looks butt and transmission power, go up supporting component (4) respectively with two the upper end of backplate (3) is connected and the cover is established in the automobile tire outside.

2. The tire external device according to claim 1, wherein each of the guard plates (3) comprises an upper guard plate (301) and a lower guard plate (302), and the lower end of the upper guard plate (301) is detachably connected with the upper end of the lower guard plate (302); the crawler assembly (1) is clamped between the two lower protection plates (302) and is respectively connected with the two lower protection plates (302), two ends of each power wheel (2) are respectively rotatably connected with the two lower protection plates (302), and the upper supporting assembly (4) is respectively connected with the upper ends of the two upper protection plates (301).

3. The tire external device according to claim 1 or 2, wherein the track assembly (1) comprises at least two thrust wheels (101), at least two auxiliary wheels (102) and a track (103), the track (103) is sleeved on the outer sides of the thrust wheels (101) and the auxiliary wheels (102), two ends of the thrust wheels (101) are respectively and rotatably connected with the lower ends of the two guard plates (3), and the auxiliary wheels (102) and the power wheels (2) are arranged on the inner side and the outer side of the track (103) in a one-to-one correspondence manner.

4. The tire circumscribing device according to claim 3, wherein the track assembly (1) further comprises at least one tension assembly (104), wherein both ends of the tension assembly (104) are respectively connected with the two guard plates (3), and the side wall of the tension assembly (104) abuts against the inner side of the track (103).

5. The tire running gear according to claim 4, wherein said tensioning assembly (104) comprises a tensioning wheel (1041) and two tensioning devices, both ends of said tensioning wheel (1041) are respectively connected with said guard plate (3) through said tensioning devices, said tensioning devices adjust the relative positions of said tensioning wheel (1041) and said guard plate (3) and tension said track (103).

6. The tire external device according to claim 5, wherein the tensioner comprises a lead screw (1042) and an adjusting block (1043), the guard plate (3) has a strip-shaped hole, the lead screw (1042) is disposed outside the guard plate (3) corresponding to the strip-shaped hole, the adjusting block (1043) has a threaded hole adapted to the lead screw (1042), and the adjusting block (1043) is sleeved outside the lead screw (1042) and is in threaded connection with the lead screw (1042); the end part of the tensioning wheel (1041) penetrates through the strip-shaped hole to be rotatably connected with the adjusting block (1043), and the side wall of the tensioning wheel (1041) is abutted to the inner side of the crawler belt (103).

7. The tire circumscribing device according to claim 1, wherein the upper supporting assembly (4) comprises two side supporting assemblies (401) and at least one roller (402), the two side supporting assemblies (401) are respectively connected with the upper ends of the two guard plates (3), and both ends of the roller (402) are respectively rotatably connected with the two side supporting assemblies (401).

8. The tire extension device according to claim 7, wherein the side support assembly (401) comprises an upper pulling plate (4011) and two pulling rods (4012), and two ends of the upper pulling plate (4011) are respectively connected with two sides of the upper end of the guard plate (3) through the pulling rods (4012).

9. The tire external device according to any one of claims 1-2 and 4-8, further comprising a guide wheel (5), wherein the guard plate (3) has a guide wheel groove, the guide wheel (5) is embedded in the guide wheel groove and is rotatably connected with the guard plate (3), and the guide wheel (5) abuts against the side surface of the automobile tire.

10. The tire external device according to any one of claims 1-2 and 4-8, further comprising at least one tie rod (6), wherein two ends of the tie rod (6) are respectively and fixedly connected with the two guard plates (3).