CN211223659U

CN211223659U - Crawler traveling device with shape easy to adjust

Info

Publication number: CN211223659U
Application number: CN201921768608.3U
Authority: CN
Inventors: 庄锦程; 王颖龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-08-11
Anticipated expiration: 2029-10-21

Abstract

The utility model discloses a caterpillar track advancing device with easy adjustment and shaping, which comprises a caterpillar track, wherein the outer side surface of the caterpillar track is contacted with the ground to carry out friction advancing; the triangular wheel structure comprises a front bearing wheel set, a rear bearing wheel set and a driving wheel set, wherein the outer side surfaces of the front bearing wheel set and the rear bearing wheel set and the driving wheel set are meshed with the inner side surface of the crawler and rub to drive the crawler to rotate; the switching device comprises a horizontal screw rod, a front screw rod, a rear screw rod and a triangular wheel structure, wherein the horizontal screw rod is connected with a front bearing wheel set and a rear bearing wheel set so as to adjust the contact length between the crawler and the ground, the front screw rod is connected with the front bearing wheel set and a driving wheel set so as to adjust the length of one side of the crawler, the rear screw rod is connected with the rear bearing wheel set and the driving wheel set so as to adjust the length of the other side of the crawler, the triangular wheel structure is supported to form a triangular crawler. The utility model discloses can adjust the trilateral length of track and adjust the focus position that the track marchd the in-process, adapt to the requirement of different topography.

Description

Crawler traveling device with shape easy to adjust

Technical Field

The utility model relates to a technical field that the track driving warp especially relates to an easily transfer track advancing device of plastic form.

Background

The crawler chassis is a common complex pavement walking chassis, and the current crawler chassis mainly comprises a walking mechanism, a crawler, a driving wheel, a supporting belt wheel, a thrust wheel, a tensioning device, a power device, a guide wheel and the like. The thrust wheel, the driving wheel, the supporting belt wheel, the guide wheel, the tensioning device and the power device are arranged on the traveling mechanism, and the crawler belt is matched with the driving wheel, the supporting belt wheel and the guide wheel. The power device drives the driving wheel to rotate, the gear teeth on the driving wheel are meshed with the crawler belt chain, and the crawler belt is continuously rolled up from the rear. The ground engaging track will impart a rearward force to the ground which in turn imparts a forward reaction force to the track which is the driving force for propelling the machine forward. When the driving force is sufficient to overcome the walking resistance, the bogie wheels roll forward on the tracks, thereby causing the machine to travel forward. When the crawler is used for climbing stairs, the following problems are encountered: stair constitute by multistage step, and track chassis is when climbing the building, and the track only contacts with the border water caltrop department of stair, and this contact surface is minimum, under the effect of gravity, easily makes the track crooked, and the track will be in tension state simultaneously to cause the obstacle for the roll of thrust wheel on the track, the method of overcoming this obstacle is: the driving force of the power device is increased; when the track is adjusted to the over-tight state, the driving force of the motor is also required to be higher. The prior crawler chassis has application difficulty when being applied to a stair climbing machine for carrying and an automatic stair climbing wheelchair. The existing track bearing support is a fixed steel plate, and the shape of the track bearing support is difficult to change under different conditions of different pavements, stairs, soft and hard pavements and the like.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the above-mentioned technique, the utility model provides an easily adjust track advancing device of shape can adjust the trilateral length of track and adjust the focus position that the track marchd the in-process, adapts to the requirement of different topography.

In order to achieve the above object, the present invention provides a crawler traveling device with an easily adjustable shape, comprising:

the outer side surface of the crawler belt is in contact with the ground to perform frictional advancing;

the triangular wheel structure comprises a front bearing wheel set, a rear bearing wheel set and a driving wheel set, wherein the outer side surfaces of the front bearing wheel set and the rear bearing wheel set and the driving wheel set are meshed with the inner side surface of the crawler and rub to drive the crawler to rotate;

the switching device comprises a horizontal screw rod, a front screw rod, a rear screw rod and a triangular wheel structure, wherein the horizontal screw rod is connected with a front bearing wheel set and a rear bearing wheel set so as to adjust the contact length between the crawler and the ground, the front screw rod is connected with the front bearing wheel set and a driving wheel set so as to adjust the length of one side of the crawler, the rear screw rod is connected with the rear bearing wheel set and the driving wheel set so as to adjust the length of the other side of the crawler, the triangular wheel structure is supported to form a triangular crawler.

Wherein, preceding bearing recombination includes preceding bearing mount and two preceding bearing wheels, and two preceding bearing wheels articulate respectively in the both ends of preceding bearing mount with one side on and connect through preceding bearing link each other.

The front bearing fixing frame is provided with an active inducer which is meshed with the inner side surface of the crawler belt, and the active inducer is positioned between the front bearing wheel and the driving wheel.

The rear bearing assembly is the same as the front bearing assembly in structure, the rear bearing fixing frame is further hinged with a driven inducer meshed with the inner side face of the crawler, and the driven inducer is located between the rear bearing wheel and the driving wheel.

The damping device comprises a front bearing fixing frame, a front bearing connecting frame, a rear bearing fixing frame and a rear bearing connecting frame, wherein the damping device further comprises a plurality of damping springs, and the damping springs are arranged between the front bearing fixing frame and the front bearing connecting frame and between the rear bearing fixing frame and the rear bearing connecting frame.

The driving wheel set is connected with a driving wheel set of another crawler travelling device through a linkage rod to form a crawler chassis, the linkage rod is connected with a carrying object, and the shape of the crawler chassis is adjusted by means of the extension and contraction of the horizontal screw rod and the front and rear screw rods so as to change the position of the linkage rod and further change the position of the gravity center of the carrying object.

The device also comprises a bearing frame, wherein the bearing frame is fixed between the front bearing wheel set and the rear bearing wheel set, and the middle part of the bearing frame is hinged to the linkage rod through a bearing screw rod.

The front screw rod stretches to the shortest length, the rear screw rod stretches to the longest length, and the horizontal screw rod stretches to place the crawler in a tensioning state, so that the distance between the linkage rod and the driving inducer is the smallest, and the gravity center of a loaded object is adjusted towards the advancing direction.

The horizontal screw rod comprises an inner rod, a middle rod and an outer rod, the middle rod is of a cavity structure with an opening, a forward threaded part is arranged on the inner wall of the middle rod, a reverse threaded part and a first fixing part are sequentially arranged on the outer wall of the middle rod along the opening direction, one end of the inner rod is connected with the front bearing wheel set, and a forward thread matched with the forward threaded part is arranged on the outer wall of the other end of the inner rod; the one end of outer pole and rear load wheel group are connected, the inner wall of the other end be equipped with the reverse screw thread of reverse screw thread portion adaptation, first fixed part is connected with drive arrangement in order to control interior pole and outer pole's flexible.

Wherein the pitch of the forward thread part and the reverse thread part is equal.

The utility model has the advantages that: compared with the prior art, the crawler traveling device with the shape easy to adjust provided by the utility model comprises a crawler and a triangular wheel structure, wherein the triangular wheel structure comprises a front bearing wheel set, a rear bearing wheel set and a driving wheel set, and the outer side surfaces of the front bearing wheel set, the rear bearing wheel set and the driving wheel set are meshed with the inner side surface of the crawler and rub to drive the crawler to rotate; set up the switching structure, the switching structure is including connecting the horizontal lead screw of front and back bearing wheelset in order to adjust track and ground contact length, connect front bearing wheelset and drive wheelset in order to adjust the preceding lead screw of track one side length and connect back bearing wheelset and the back lead screw of drive wheelset in order to adjust track opposite side length, horizontal lead screw promptly, front and back lead screw supports formation triangle track with the triangle wheel structure, and the flexible length through adjusting each lead screw is with the shape after the adjustment track is supported, and play the effect of adjusting track rate of tension, adapt to the requirement of different topography.

Drawings

Fig. 1 is a first usage state reference diagram of the present invention;

fig. 2 is a reference diagram of a second angle of use of the present invention;

FIG. 3 is a schematic view of a single side ascending state of the present invention;

FIG. 4 is a schematic view of a single-side downhill state of the present invention;

FIG. 5 is a schematic view of the single-sided high-speed forward state of the present invention;

fig. 6 is a schematic view of a partial structure of the present invention;

fig. 7 is a schematic structural view of the horizontal screw rod and the driving device of the present invention;

FIG. 8 is a schematic view of the horizontal lead screw and drive arrangement of the present invention;

fig. 9 is a schematic structural view of the horizontal screw rod of the present invention.

The main element symbols are as follows:

1. a crawler belt; 2. a front load-bearing wheel set; 21. a front load-bearing mount; 22. a front load-bearing wheel; 23. a front load-bearing link; 24. a front damping spring; 3. a rear bearing wheel set; 31. the rear bearing fixing frame; 32. a load-bearing wheel; 33. A rear bearing connecting frame; 34. a rear damping spring; 4. a driving wheel set; 5. a switching mechanism; 51. a front screw rod; 52. A rear screw rod; 53. a horizontal screw rod; 6. inducing a wheel set; 61. an active inducer; 62. a driven inducer; 71. A linkage frame; 72. a drive post; 73. a load bearing support; 74. and receiving the screw rod.

Detailed Description

In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1-2, the shape-adjustable crawler traveling apparatus of the present invention includes a crawler 1, a triangle wheel structure and a switching structure, the crawler is generally made of rubber, has a proper belt device and reinforcing fibers to stand the terrain commonly encountered, including rocks, logs, mud, sand, etc., and the outer side surface thereof is in contact with the ground to perform frictional advance; the triangular wheel structure is meshed with the inner side surface of the crawler 1 and drives the crawler to move forward, the triangular wheel structure comprises a front bearing wheel set, a rear bearing wheel set and a driving wheel set 4, the front bearing wheel set and the rear bearing wheel set are respectively a front bearing wheel set 2 and a rear bearing wheel set 3, and the outer side surfaces of the front bearing wheel set, the rear bearing wheel set and the driving wheel set 4 are meshed with the inner side surface of the crawler 1 and drive the crawler to rotate in a; the switching structure comprises a horizontal screw rod 53 which is connected with a front bearing wheel set and a rear bearing wheel set to adjust the contact length of the crawler and the ground, a front screw rod 51 which is connected with the front bearing wheel set 2 and a driving wheel set 4 to adjust the length of one side of the crawler, and a rear screw rod 52 which is connected with the rear bearing wheel set 3 and the driving wheel set 4 to adjust the length of the other side of the crawler, namely, the horizontal screw rod 53 and the front and rear screw rods 51 support a triangular wheel structure to form a triangular crawler, the telescopic length of each screw rod is adjusted to adjust the shape of the crawler after being supported, and the function of adjusting.

Compared with the prior art, the utility model not only supports the triangle wheel structure through the switching device, but also plays the role of adjusting the tension degree of the track, and can change the shape of the track, the prior track advancing device needs the triangle fixing frame to support the front and rear bearing wheel sets and the driving wheel set to form the triangle track, but has the defect that the length of each edge of the triangle fixing frame is fixed, therefore, the position between the front and rear bearing wheel sets and the driving wheel which are supported and fixed by the triangle fixing frame is fixed, therefore, the shape of the track can not be adjusted, and the tensioning device needs to be additionally arranged to adjust the tension degree of the track in the advancing process, thereby preventing the track from being disconnected with the triangle wheel structure, the structure is relatively complex and the shape of the track can not be adjusted, the scenes of common track application have multiple conditions of flat ground, up-down slope or soft-hard high-speed advancing and the like, because the difference to the atress condition under every kind of scene, the requirement to the focus position and the shape of track is different, and general track advancing device for example track chassis needs the track symmetry setting of both sides to keep balanced advancing, two tracks are connected through the link between respective drive wheelset, form track chassis, the link with be used for fixed and support year thing, for example the wheel seat support, and at the in-process of advancing, for example the uphill, because gravity skew, if the focus of carrying the thing this moment is located the middle part of track, the danger of heeling appears easily, and the utility model discloses can be through adjusting the shape of track, change the demand that the focus position of carrying the thing adapts to different scenes.

In this embodiment, referring to fig. 1 to 6, the front bearing wheel set 2 includes a front bearing fixing frame 21 and two front bearing wheels 22, the two front bearing wheels 22 are respectively hinged to two ends of the same side of the front bearing fixing frame 21 and are connected to each other through a front bearing connecting frame 23, one end of a front screw rod 51 is fixed on the front bearing fixing frame 21 and is located on one side opposite to the two front bearing wheels 22, the other end of the front screw rod 51 is fixedly connected to the driving wheel set 4, and the two front bearing wheels 2 are provided to ensure the overall stability in the movement process, especially, the two front bearing wheels can be located on different planes, so that the corners of the triangular crawler can be contacted on the two different planes, which is more stable; the crawler belt traveling device is further provided with an inducer group 6, an inducer group 6 is provided with a driving inducer 61 and a driven inducer 62, the driving inducer 61 is fixed on the front bearing fixing frame 21 and meshed with the inner side surface of the crawler belt 1, the driving inducer 61 is positioned between the front bearing wheel 22 and the driving wheel group 4, and the driving inducer and the driving wheels play a dual-driving role together, so that the phenomenon that the front bearing wheel is blocked due to insufficient power of the driving wheels can be avoided in the moving process of the crawler belt traveling device, particularly in the ascending slope; the structure of the rear bearing assembly 3 is the same as that of the front bearing assembly 2, the rear bearing wheel assembly 3 comprises a rear bearing fixing frame 31, 2 rear bearing wheels 32 and a rear bearing connecting frame 33, wherein the two rear bearing wheels 32 are respectively hinged to two ends on the same side of the rear bearing fixing frame 31 and are connected with each other through the rear bearing connecting frame 33, one end of a rear screw rod 52 is fixed on the rear bearing fixing frame 31 and is positioned on one side opposite to the two rear bearing wheels 32, the other end of the rear screw rod 52 is fixedly connected with the driving wheel assembly 4, one side of the front bearing wheel assembly 3 is in the advancing direction, a driven inducer 62 is fixed on the rear bearing fixing frame 31 and is meshed with the inner side surface of the crawler 1, the driven inducer 62 is positioned between the rear bearing wheels 32 and the driving wheel assembly 4, and moves along with the driven inducer under the driving of the driving inducer to increase the rear friction force of the crawler; in order to reduce the vibration in the movement process, the device also comprises two damping springs which are respectively a front damping spring 24 and a rear damping spring 34, wherein the front damping spring 24 is arranged between the front bearing fixing frame 21 and the front bearing connecting frame 23, and the rear damping spring 34 is arranged between the rear bearing fixing frame 31 and the rear bearing connecting frame 33, so that the damping effect is achieved; the driving wheel set 4 may specifically include a driving wheel 41 and a driving bracket 42, the driving wheel is rotatably fixed on the driving bracket 42, and is connected with the rear screw 52 and the front screw 51 through the driving bracket 42.

In the embodiment, the driving wheel set 4 is generally connected with the triangular crawler belt on the other side, so that the gravity center position of the load of the crawler belt chassis consisting of the crawler belts on the two sides can be changed by changing the position of the driving wheel set 4, and other connection modes can also be adopted; taking the driving wheel set 4 connected with the triangular crawler belt on the other side and the carrying object as a wheelchair as an example, the driving wheel of the driving wheel set 4 is connected with the driving wheel of the driving wheel set 4 of another crawler belt advancing device through a linkage rod 71 to form a crawler belt chassis, the carrying object is fixed by the linkage rod 71, and the shape of the crawler belt chassis and the gravity center position of the carrying object are adjusted by virtue of the extension and contraction of the horizontal screw rod 53, the front screw rod 51 and the rear screw rod 53; and after the crawler chassis is formed, in order to facilitate the stable fixation of the wheelchair, the linkage rod 71 is symmetrically provided with transmission columns 72, and two drive posts 72 support the wheelchair seat, the two drive post drive posts 72 are located between the two drive wheels, in order to avoid the problem that the surface of a load-bearing object is inclined to bring discomfort and easily overturn in the process of traveling, particularly on an uphill slope and a downhill slope, such as places without barrier channels and the like, the device also comprises a load bearing frame 73, wherein the load bearing frame 73 is fixed between a front load bearing wheel and a rear load bearing wheel, and the middle part is hinged on the linkage rod 71 through a receiving screw rod 74, so that the inclination angle of the wheelchair seat is changed through the advancing distance of the receiving screw rod 74 in the moving process, then the gravity center change sent by the wheelchair in the slope running process is compensated, so that the wheelchair seat is always kept in a horizontal state, and the automatic adjustment of the horizontal gravity center of the wheelchair seat is completed; the following explains the working state of the crawler travel device in various scenes with the direction of the front bearing wheel set 2 as the advancing direction:

referring to fig. 3, when going upstairs or climbing a slope, the front screw rod 51 stretches to the shortest, the rear screw rod 52 stretches to the longest, and the horizontal screw rod 53 stretches to keep the track in a tensioning state, so that the distance between the driving wheel set 4 and the active inducer 61 is the smallest, the driving wheel set 4 is adjusted towards the direction close to the front screw rod 51, and then the center of gravity of the object to be carried is adjusted towards the advancing direction, so that the center of gravity of the object to be carried is stably advanced forwards, and the risk of backward tilting of the object to be carried is;

referring to fig. 4, when going down stairs or downhill, the front screw rod 51 extends to the longest, the rear screw rod 52 extends to the shortest, and the horizontal screw rod 53 extends and retracts to keep the crawler in a tensioned state, so that the distance between the driving wheel set 4 and the driven inducer 62 is the smallest, the driving wheel set 4 is adjusted towards the direction close to the rear screw rod 52, and then the center of gravity of the object to be carried is adjusted away from the advancing direction, so that the center of gravity of the object to be carried is stably advanced towards the back, and the risk of forward tilting of the object to;

when the crawler belt moves on a soft road surface, such as a wet mud pit ground or a swamp ground, the horizontal screw rod 53 is stretched to the longest length to enable the length of one side of the crawler belt, which is in contact with the ground, to be the longest, and the front screw rod 51 and the rear screw rod 52 are simultaneously adjusted to adjust the tension of the crawler belt, so that the crawler belt 1 is in an isosceles triangle shape, the contact area of the crawler belt 1 and the ground is the largest, the pressure of the whole crawler belt chassis is the smallest, the crawler belt chassis is prevented from sinking into the soft road surface, and jo;

referring to fig. 5, when moving on a hard road, the horizontal screw 53 contracts to the shortest length to make the length of the side of the track 1 contacting with the ground shortest, and simultaneously adjusts the front screw 51 and the rear screw 52 to extend to the longest length, and simultaneously adjusts the tension of the track, at this time, the contact area of the track and the ground is the smallest, the friction between the track and the ground is the smallest when moving, the influence on the speed is reduced to the lowest, and the stable and rapid advance is ensured; here, if the device is in a state of moving on a hard surface at a high speed, the stretching lengths of the front screw rod 51 and the rear screw rod 52 are required to be adjusted, the rear screw rod 52 is contracted to a certain extent, the lengths of the front screw rod 51 and the rear screw rod 52 are correspondingly adjusted to adjust the tension of the crawler 1, the contact area is small, meanwhile, the center of gravity of a loaded object is far away from the advancing direction, and the overall stability when the object is advanced highly is ensured.

In this embodiment, the device is used for realizing the overall automation, and further comprises a driving device, wherein the driving device is electrically connected with the horizontal screw rod 53, the front and rear screw rods, the driving wheel and the active inducer 61 so as to provide power for the components connected with the driving device, and is controlled by a control device, in order to accurately know the stress condition of the driving device under different conditions and automatically adjust the front and rear, upper and lower center of gravity, a plurality of pressure sensors and horizontal sensors are further arranged, and the pressure sensors can sense pressure signals and can convert the pressure signals into usable output electric signals according to a certain rule; generally consists of a pressure sensitive element and a signal processing unit. According to different test pressure types, the pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors, wherein the differential pressure sensors are used and fixed at the contact positions of the caterpillar track, the driving inducer and the driven inducer so as to detect the stress conditions of different parts and judge the motion conditions to perform corresponding adjustment; the level sensor is one of angle sensors, and is used for measuring the levelness of a carrier, and is also called as an inclination angle sensor, and is often called as a level meter or an inclination angle meter in engineering. The double-shaft level sensor can measure the horizontal angle of two directions simultaneously, so that the levelness of the whole measured surface can be determined, because in the process of inclined plane movement, the object is required to be guaranteed to be carried out in the relative level with the ground, and the crawler belt and the ground can form a certain angle, so that the level sensor is fixed on the fixed position of the object carrying and the linkage rod and on the horizontal screw rod, the angle between the object carrying and the crawler belt is compared, the position of the object carrying is adjusted in time, the detection of each pressure sensor and the level sensor is realized, and the driving device is controlled to adjust each part after the information collected by the pressure sensor and the level sensor is comprehensively analyzed and processed.

In this embodiment, referring to fig. 7-9, the horizontal screw 51 includes an inner rod 511, a middle rod 512 and an outer rod 513, the middle rod 512 is a cavity structure with an opening, and the inner wall of the middle rod is provided with a forward thread portion 5121, the outer wall of the middle rod 512 is sequentially provided with a reverse thread portion 5122 and a first fixing portion 5123 along the opening direction, one end of the inner rod 511 is provided with a second fixing portion 5112 connected to the front load-bearing wheel set 3, and the outer wall of the other end is provided with a forward thread 5111 adapted to the forward thread portion 5121; one end of the outer rod 513 is provided with a third fixing part 5132 connected with the rear bearing wheel set 3, the inner wall of the other end is provided with a reverse thread 5131 matched with the reverse thread part 5122, and the first fixing part 5112 is connected with a driving device to control the extension and retraction of the inner rod 511 and the outer rod 513; the thread pitches of the regular thread part 5121 and the external thread part 5122 are equal, the horizontal screw rod is arranged to be telescopic at two ends, the telescopic length of the horizontal screw rod is lengthened, and the deformation of the crawler belt is stronger; the outer rod sleeve 5133 is further included, the part, away from the opening, of the first fixing portion 5123 is the fourth fixing portion 51231, a bearing 5134 for fixing the outer rod sleeve 5133 is arranged on the fourth fixing portion 51231, a strip-shaped groove is formed in the outer rod sleeve 5133 in the length direction, a limiting block is arranged on the outer wall, close to the opening, of the outer rod 513, the limiting block can slide in the strip-shaped groove to limit the movement length of the outer rod 513 relative to the middle rod 512, and when the middle rod 512 rotates forwards or reversely excessively, the outer rod 513 directly falls off from the middle rod 512, so that the positioning effect is achieved; the horizontal screw 51 can be driven and controlled by a driving device, taking the driving device as a stepping motor 9 as an example, a driving gear 91 is fixed on a rotating shaft of the stepping motor 9, the first fixing part 5123 is further provided with a fifth fixing part 51232 close to the opening, a driven gear 92 meshed with the driving gear 91 is sleeved on the fifth fixing part 51232, and the stepping motor 9 drives the middle rod 512 to rotate, for example, the stepping motor 9 rotates forward to drive the driving gear 91 to rotate forward so as to drive the middle rod 512 to rotate forward along with the driven gear 92, and then the outer rod 513 and the inner rod 511 move back to back towards the two ends of the middle rod 512, so that the length of the horizontal screw is lengthened; the stepping motor 9 rotates forwards to drive the driving gear 91 to rotate backwards so as to drive the middle rod 512 to rotate backwards along with the driven gear 92, and then the outer rod 513 and the inner rod 511 move towards two ends of the middle rod 512 in opposite directions, so that the length of the horizontal screw rod 51 is shortened, wherein the driving gear 7 and the driven gear 92 can be replaced by a transmission belt or a chain, and can also play a role in driving the middle rod 2 to rotate; and the structure that the driven gear 92 is fixed on the middle rod 2 is as follows: a first fixing groove 51233 is formed in the fifth fixing portion 51232, a second fixing groove 921 is formed in the inner wall of the driven gear 92, and the fixing block is clamped between the first fixing groove and the second fixing groove 921, so that the driven gear 92 is fixed to the middle rod 512 without affecting the forward rotation and/or reverse rotation of the middle rod 512; in order to fix the integral device and the applied equipment conveniently, the device further comprises a motor sleeve 10, the motor sleeve 10 is provided with a first sleeve 101 and a second sleeve 102 which are fixed with each other, the first sleeve 101 is fixed on the outer wall of the stepping motor 9, and the second sleeve 102 can be directly sleeved on the outer wall of the outer rod 513 to play a role in fixing.

The above disclosure is only one or several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. The utility model provides an easily transfer caterpillar track advancing device of plastic form which characterized in that includes:

2. An easily shapeable crawler travel apparatus according to claim 1, wherein the front bearing assembly comprises a front bearing mount and two front bearing wheels, the two front bearing wheels are respectively hinged to two ends of the front bearing mount on the same side and connected to each other through a front bearing connection frame.

3. The easy-to-adjust contoured crawler travel unit of claim 2, wherein the front load bearing mount has an active inducer that engages the inner side of the crawler and is located between the front load bearing wheel and the drive wheel set.

4. A shape-adjustable crawler traveling device according to claim 2 or 3, wherein the rear bearing unit has the same structure as the front bearing unit, and the rear bearing holder is further hinged with a driven inducer engaged with an inner side surface of the crawler, the driven inducer being located between the rear bearing wheel and the driving wheel.

5. An easily reshaped crawler travel unit according to claim 4, further comprising a plurality of shock absorbing springs disposed between said front load bearing mount and front load bearing link and between said rear load bearing mount and rear load bearing link.

6. The crawler traveling device with the shape being easily adjusted according to claim 3, wherein the driving wheel set is connected with the driving wheel set of another crawler traveling device through a linkage rod to form a crawler chassis, the linkage rod is connected with a load, and the horizontal screw rod, the front screw rod and the rear screw rod are extended and retracted to adjust the shape of the crawler chassis to change the position of the linkage rod, so as to change the position of the center of gravity of the load.

7. The caterpillar track device easy to adjust and shape as claimed in claim 6, further comprising a bearing support frame, wherein the bearing support frame is fixed between the front and rear bearing wheel sets, and the middle portion of the bearing support frame is hinged to the linkage rod through a support screw rod.

8. The easy-to-adjust-shape crawler traveling device according to claim 6, wherein the front screw rod extends to the shortest length, the rear screw rod extends to the longest length, and the horizontal screw rod extends and contracts to place the crawler in a tensioned state, so that the distance between the linkage rod and the active inducer is minimized, and the center of gravity of the object is adjusted to approach the forward direction.

9. The crawler traveling device with the shape being easily adjusted according to claim 1, wherein the horizontal screw rod comprises an inner rod, a middle rod and an outer rod, the middle rod is of a cavity structure with an opening, a forward threaded portion is arranged on the inner wall of the middle rod, a reverse threaded portion and a first fixing portion are sequentially arranged on the outer wall of the middle rod along the opening direction, one end of the inner rod is connected with the front bearing wheel set, and a forward thread matched with the forward threaded portion is arranged on the outer wall of the other end of the inner rod; the one end of outer pole and rear load wheel group are connected, the inner wall of the other end be equipped with the reverse screw thread of reverse screw thread portion adaptation, first fixed part is connected with drive arrangement in order to control interior pole and outer pole's flexible.

10. The easy-to-shape crawler travel device of claim 9, wherein the pitch of the forward threaded portion and the reverse threaded portion are equal.