Crawler chassis transmission system and crawler-type agricultural vehicle

Abstract

The invention relates to a crawler chassis transmission system which comprises a vehicle body supporting frame and crawler walking mechanisms, a lifting supporting platform is arranged between the crawler walking mechanisms on the two sides and located below the vehicle body supporting frame, a crawler driving mechanism is arranged on the surface of the lifting supporting platform, and the transmission end of the crawler driving mechanism can drive the crawler walking mechanisms. Folding mechanisms and folding driving mechanisms for driving the folding mechanisms to generate height changes are further arranged on the two sides of the vehicle body supporting frame, and the two sides of the lifting supporting platform are connected to the folding mechanisms; when the crawler belt falls into mire and is not easy to escape, the folding mechanism enables the whole lifting support platform to move downwards and jack up the whole crawler belt chassis, and the position or angle of the falling first crawler belt is changed to escape by combining the support of the lifting support platform and the continuous movement of the first crawler belt which does not fall. And convenience is brought to escape when the crawler chassis system walks.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural vehicles, and in particular to a crawler chassis transmission system and a crawler type agricultural vehicle. Background Art

[0002] At present, mechanization and automation have been gradually realized in agricultural production. The development of crawler agricultural machinery plays a vital role in agriculture. In agricultural production operation conditions, compared with wheeled walking systems, crawler walking systems can maintain good passability when walking on wet and rotten ground, and have better ability to cross ditches and bumps. Therefore, crawler walking systems are widely used in agricultural machinery such as tractors and paddy field operation machinery.

[0003] The application announcement number is CN117485441A, which discloses a crawler system and agricultural machinery. Combined with its specification and drawings, its solution can drive the crawler support assembly, the crawler wheel system installed on the crawler support assembly, and the crawler body supported by the crawler wheel system to rotate relative to the crawler mounting frame as a whole by a telescopic drive device, thereby achieving posture adjustment so as to adapt to the undulating ground conditions through active adjustment. However, its solution still has some problems in the face of complex road conditions. For example, if the crawler system encounters a pothole section during walking, one side of the crawler will fall into the mud. Summary of the invention

[0004] The present invention mainly aims at the problems existing in the operation of the crawler vehicle chassis, and invents a crawler chassis transmission system and a crawler agricultural vehicle. When the first crawler on any side sinks into the mud and is difficult to get out of the mud, the telescopic shaft of each first telescopic element will retract, and the first telescopic element will drive the folding mechanism to make the entire lifting support platform move downward during the retraction process. Since the cross-section of the lifting support platform is an inverted U-shape and is in an inclined state after sinking, the lifting support platform will gradually fit into the ground and lift up the entire crawler chassis, and the first crawler that has not sunk will slightly tilt to the other side, and combined with the support of the lifting support platform and the continuous movement of the first crawler that has not sunk, the position or angle of the sunken first crawler changes, so that the entire crawler chassis can complete a certain degree of escape.

[0005] The inventive objective of the present invention is achieved through the following technical solutions: a crawler chassis transmission system, comprising a vehicle body support frame, a crawler walking mechanism arranged on both sides of the vehicle body support frame, a lifting support platform is provided between the crawler walking mechanisms on both sides and below the vehicle body support frame, a crawler driving mechanism is provided on the surface of the lifting support platform, the transmission end of the crawler driving mechanism can drive the crawler walking mechanism, a folding mechanism and a folding driving mechanism that drives the folding mechanism to change height are also provided on both sides of the vehicle body support frame, and both sides of the lifting support platform are connected to the folding mechanism.

[0006] Preferably, the track drive mechanism includes an engine, a generator, a first transmission wheel, a second transmission wheel, a battery pack and a track drive motor. The engine and the generator are both arranged on the surface of the lifting support platform. The end of the drive shaft of the engine is provided with a first transmission wheel, and the end of the rotating shaft of the generator is provided with a second transmission wheel. The first transmission wheel and the second transmission wheel are connected by a transmission belt. The battery pack is arranged on one side of the vehicle body support frame, and the track drive motor is arranged on the top of both sides of the vehicle body support frame. The rotating shaft of each track drive motor is connected to the track walking mechanism.

[0007] Preferably, the crawler walking mechanism includes a first driving wheel, a first driven wheel and a first crawler track, and wheel support plates are extended outward on both sides of the bottom of the vehicle body support frame, and a plurality of first driven wheels are rotatably provided on the wheel support plates. The end of the rotating shaft of the crawler drive motor is connected to the first driving wheel, and a first crawler track is provided around the surface of the first driving wheel and the first driven wheel. This arrangement is intended to enable the entire crawler walking mechanism to run on the ground.

[0008] Preferably, each of the folding mechanisms comprises a first linkage plate, a first linkage rod, a second linkage plate, a third linkage plate and a fourth linkage plate, one end of the first linkage plate is hinged to a side of the vehicle body support frame close to the outside, the other end between the first linkage plates on both sides is hinged to the first linkage rod, the surface of the second linkage plate is provided with a first hinge point, a second hinge point, a third hinge point and a fourth hinge point from top to bottom, the first hinge point is hinged to the surface of the first linkage rod, the second hinge point is hinged to one end of the third linkage plate, the third hinge point is hinged to the inner side of the vehicle body support frame, the fourth hinge point is hinged to the first hinge support block on the surface of the lifting support platform, the fourth linkage plate is provided with a fifth hinge point, a sixth hinge point and a seventh hinge point from top to bottom, the other end of the third linkage plate is hinged to the fifth hinge point, the sixth hinge point is hinged to the inner side of the vehicle body support frame, and the seventh hinge point is hinged to the second hinge support block on the surface of the lifting support platform.

[0009] Preferably, the folding drive mechanism includes a first telescopic element and a driving support plate, one end of the driving support plate is connected to one side of the vehicle body support frame, the other end of the driving support plate is hinged to one end of the first telescopic element, and the telescopic shaft end of the other end of the first telescopic element is hinged to the top of the first linkage plate and the second hinge point on the second linkage plate.

[0010] Preferably, at least one end of the lifting support platform is provided with a plurality of supporting roller assemblies and a second telescopic element for pushing the supporting roller assemblies to change their angles; the middle portion of the supporting roller assembly is hingedly connected to the inner side of the lifting support platform; the end portion of the supporting roller assembly is hingedly connected to the telescopic end of the second telescopic element; when the telescopic end of the second telescopic element is retracted, the surface of the supporting roller assembly does not contact the ground.

[0011] Preferably, the support roller assembly includes a roller support frame and a support roller, a placement plate is extended outwardly from one side of the lifting support platform, one end of the second telescopic element is hinged to the surface of the placement plate, the other end of the second telescopic element is connected to one end of the roller support frame, the middle part of the roller support frame is also hinged to the surface of the placement plate, and the other end of the roller support frame is rotatably connected to the support roller.

[0012] Preferably, the first telescopic element and the second telescopic element are electric push rods, which are electrically connected to the battery pack inside the vehicle body support frame. The cross-section of the lifting support platform is an inverted U-shape. This arrangement is intended to facilitate the bottom of the lifting support platform to lift up the entire crawler transmission system.

[0013] A crawler agricultural vehicle, wherein a first dust cover is provided at the bottom of the lifting support platform, the end of the drive shaft of the engine extends outward and passes through the first dust cover to be connected to an implement support shell, and rectangular plates are connected on both sides of the implement support shell. This arrangement is to enable the crawler chassis transmission system to be combined with agricultural implements for functional expansion.

[0014] A crawler agricultural vehicle, wherein a second dust cover is provided at the bottom of the lifting support platform, the end of the drive shaft of the engine extends outward and passes through the second dust cover to be connected to the interior of a tilling support shell, the interior of the tilling support shell is provided with a first bevel gear and a second bevel gear, the first bevel gear is connected to the drive shaft of the engine, the second bevel gear is transmission-connected to the first bevel gear and a tilling rolling shaft is connected in the middle thereof, a plurality of tilling plates are provided on the surface of the tilling rolling shaft, and this arrangement is for realizing that the crawler chassis transmission system can be combined with agricultural implements for functional expansion.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. If the first crawler on any side sinks into the mud and is difficult to get out of the mud, the telescopic shaft of each first telescopic element will retract, and the first telescopic element will drive the folding mechanism to move the entire lifting support platform downward during the retraction process. Since the cross-section of the lifting support platform is an inverted U-shape and is in an inclined state after sinking, the lifting support platform will gradually fit into the ground and lift up the entire crawler chassis, and the first crawler that has not sunk will slightly tilt to the other side, and combined with the support of the lifting support platform and the continuous movement of the first crawler that has not sunk, the position or angle of the sunken first crawler will change, so that the entire crawler chassis can complete a certain degree of escape. It should be noted that after adjusting the position or angle of the sunken first crawler, the lifting support platform will return to its original position, which brings convenience to the crawler chassis system to escape when walking; 2. When the lifting of the lifting support platform is subject to certain restrictions, the telescopic shaft of the second telescopic element will extend, thereby driving the roller support frame to start rotating. The support wheel gradually fits the ground, and the cooperation between the support wheel and the first crawler on the other side can easily adjust the angle of the entire crawler chassis, so as to get out of the quagmire. This design further enhances the crawler's ability to get out of trouble, which brings convenience to the crawler chassis when walking or getting out of trouble; 3. If a relatively large slope is encountered, the telescopic shafts of the two second telescopic elements will extend so that the two support wheels are both in contact with the ground. At this time, the contact area of ​​the crawler chassis becomes larger, the center of gravity is lower, and it is not easy to tip over, which brings convenience to the crawler chassis when walking; 4. When the lifting support platform moves up and down under the drive of the folding mechanism, in addition to the above-mentioned ability to get out of trouble, combined with specific agricultural implements, and its transmission end is connected to the drive shaft of the engine, these agricultural implements can also have the function of up and down displacement, which is convenient for the functional expansion of the agricultural crawler chassis system; 5. The shape of the first crawler supported by the first driving wheel and the three first driven wheels tends to be triangular, and the inclination angle generated by the first crawler when climbing can make it easier for it to move forward or backward. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a first embodiment of the present invention; Figure 2 is a perspective view of a first embodiment of the present invention; Figure 3 is a perspective view of a first embodiment of the present invention; Figure 4 It is a partial stereogram of the first embodiment of the present invention; Figure 5 is a perspective view of a first embodiment of the present invention; Figure 6 is a perspective view of a second embodiment of the present invention; Figure 7is a partial stereogram of a second embodiment of the present invention; Figure 8 It is a three-dimensional diagram of the third embodiment of the present invention.

[0017] Fig. 9 It is a three-dimensional diagram of a fourth embodiment of the present invention.

[0018] Fig.10 It is a partial enlarged view of the fourth embodiment of the present invention.

[0019] Markings in the figure: 1, vehicle body support frame; 2, crawler walking mechanism; 21, first driving wheel; 22, first driven wheel; 23, first crawler; 3, lifting support platform; 31, first hinged support block; 32, second hinged support block; 33, placement plate; 4, crawler driving mechanism; 41, engine; 42, first transmission wheel; 43, generator; 44, second transmission wheel; 45, battery pack; 46, crawler driving motor; 411, driving shaft; 5, folding mechanism; 51, first linkage plate; 52, first linkage rod; 53, second linkage plate; 54, third linkage plate; 55, fourth linkage plate; 531 , the first hinge point; 532, the second hinge point; 533, the third hinge point; 534, the fourth hinge point; 551, the fifth hinge point; 552, the sixth hinge point; 553, the seventh hinge point; 6, the folding drive mechanism; 61, the first telescopic element; 62, the driving support plate; 7, the supporting roller assembly; 71, the second telescopic element; 72, the roller support frame; 73, the supporting wheel; 81, the first dust cover; 82, the tool support shell; 83, the rectangular plate; 91, the second dust cover; 92, the tilling support shell; 93, the first bevel gear; 94, the second bevel gear; 95, the tilling rolling shaft; 96, the tilling plate. DETAILED DESCRIPTION

[0020] like Figures 1 to 5As shown, the first embodiment of the present invention is a crawler chassis transmission system, comprising a vehicle body support frame 1, crawler walking mechanisms 2 arranged on both sides of the vehicle body support frame 1, a lifting support platform 3 is arranged between the crawler walking mechanisms 2 on both sides and below the vehicle body support frame 1, and a crawler driving mechanism 4 is arranged on the surface of the lifting support platform 3, and the driving end of the crawler driving mechanism 4 can drive the crawler walking mechanism 2. Specifically, the crawler driving mechanism 4 includes an engine 41, a generator 43, a first transmission wheel 42, a second transmission wheel 44, a battery pack 45 and a crawler driving motor 46, and the engine 41 and the generator 43 are both arranged on the lifting support The surface of the supporting platform 3, the end of the driving shaft 411 of the engine 41 is provided with a first transmission wheel 42, the end of the rotating shaft of the generator 43 is provided with a second transmission wheel 44, the first transmission wheel 42 and the second transmission wheel 44 are connected by a transmission belt, the battery pack 45 is arranged on one side of the vehicle body support frame 1, the crawler drive motor 46 is arranged on the top of both sides of the vehicle body support frame 1, and the rotating shaft of each crawler drive motor 46 is connected to the crawler walking mechanism 2, wherein the crawler walking mechanism 2 includes a first driving wheel 21, a first driven wheel 22 and a first crawler 23, and wheel body support plates 11 are extended outwardly on both sides of the bottom of the vehicle body support frame 1, The wheel body support plate 11 is rotatably provided with three first driven wheels 22, the end of the rotating shaft of the crawler drive motor 46 is connected to the first driving wheel 21, and a first crawler belt 23 is provided around the surface of the first driving wheel 21 and the first driven wheel 22. After such arrangement, the driving shaft 411 of the engine 41 can drive the first transmission wheel 42 to rotate, and the first transmission wheel 42 drives the second transmission wheel 44 to rotate through the transmission belt. When the second transmission wheel 44 rotates, it drives the generator 43 to work, and the generator 43 stores the generated electric energy inside the battery pack 45. The battery pack 45 generates an energy source for the crawler drive motor 46, and the crawler When the belt drive motor 46 rotates, it can drive the first drive wheel 21 to rotate. When the first drive wheel 21 rotates, it can drive the first crawler 23 to start moving. When the first crawler 23 moves, the first driven wheel 22 plays a supporting and guiding role. The use of this design mechanism makes the entire crawler chassis free of mileage anxiety. The corresponding communication module can also be set on the crawler chassis, so that external users can use a remote control to operate the start and stop or speed of the crawler drive motor 46. Moreover, the shape of the first crawler 23 supported by the first drive wheel 21 and the three first driven wheels 22 tends to be triangular, and the inclination angle of the first crawler 23 when climbing can make it easier for it to move.

[0021] In the first embodiment, a folding mechanism 5 and a folding drive mechanism 6 for driving the folding mechanism 5 to change height are further provided on both sides of the vehicle body support frame 1. Both sides of the lifting support platform 3 are connected to the folding mechanism 5. Specifically, the folding mechanism 5 on each side includes a first linkage plate 51, a first linkage rod 52, a second linkage plate 53, a third linkage plate 54 and a fourth linkage plate 55. One end of the first linkage plate 51 is hinged to the side of the vehicle body support frame 1 close to the outside, and the other end between the first linkage plates 51 on both sides is hinged to the first linkage rod 52. The surface of the second linkage plate 53 is provided with a first hinge point 531, a second hinge point 532, a third hinge point 533 and a fourth hinge point 534 from top to bottom. The joint 531 is hinged to the surface of the first linkage rod 52, the second hinge point 532 is hinged to one end of the third linkage plate 54, the third hinge point 533 is hinged to the inner side of the vehicle body support frame 1, the fourth hinge point 534 is hinged to the first hinge support block 31 on the surface of the lifting support platform 3, the fourth linkage plate 55 is provided with a fifth hinge point 551, a sixth hinge point 552 and a seventh hinge point 553 from top to bottom, the other end of the third linkage plate 54 is hinged to the fifth hinge point 551, the sixth hinge point 552 is hinged to the inner side of the vehicle body support frame 1, and the seventh hinge point 553 is hinged to the second hinge support block 32 on the surface of the lifting support platform 3. It should be noted that the first hinge support block 31 and the second hinge support The blocks 32 are distributed on both sides of the surface of the lifting support platform 3, and there are four of them in total. The folding drive mechanism 6 includes a first telescopic element 61 and a driving support plate 62. One end of the driving support plate 62 is connected to one side of the vehicle body support frame 1, and the other end of the driving support plate 62 is hinged to one end of the first telescopic element 61. The telescopic shaft end of the other end of the first telescopic element 61 is hinged to the top of the first linkage plate 51 and the second hinge point 532 on the second linkage plate 53. The first telescopic element 61 is an electric push rod. The electric push rod is used because it can minimize the space occupation and its precision control is also very accurate. The electric push rod is electrically connected to the battery pack 45 inside the vehicle body support frame 1. The cross section is an inverted U-shape. After such a setting, the default state of the electric push rod is that the telescopic shaft is extended, so that the entire lifting support platform 3 is close to the bottom of the vehicle body support frame 1 and away from the ground. When the first crawlers 23 on both sides are moving forward, if the first crawlers 23 on any side fall into the mud and are difficult to get out, the telescopic shaft of each first telescopic element 61 will retract. During the retraction process, the first telescopic element 61 will drive the first hinge point 531 of the second linkage plate 53 and the top of the first linkage plate 51 to rotate relative to the first linkage rod 52. During these two rotation processes, the first linkage rod 52 plays a supporting and guiding role. At the same time, the third hinge point 533 of the second linkage plate 53 will rotate relative to the inner side of the vehicle body support frame 1.The second hinge point 532 and the fourth hinge point 534 are displaced, wherein the fourth hinge point 534 tends to displace downward, wherein the displacement of the second hinge point 532 will drive the third linkage plate 54 to displace, and during the displacement of the third linkage plate 54, its end portion rotates relative to the second hinge point 532, and when the third linkage plate 54 is displaced, its other end rotates relative to the fifth hinge point 551 and drives the fourth linkage plate 55 to displace, so that the seventh hinge point 553 of the fourth linkage plate 55 tends to displace downward, and the second hinge point 532 rotates relative to the inner side of the vehicle body support frame 1, then the downward displacement generated by the fourth hinge point 534 and the seventh hinge point 553 will rotate relative to the first hinge support block 31 and the second hinge support block 32 respectively, and the first hinge support block 31 rotates relative to the second hinge support block 32. 1 and the second hinged support block 32 are pushed by the fourth hinge point 534 and the seventh hinge point 553 to make the entire lifting support platform 3 move downward. Since this lifting process is controlled by the telescopic shaft of the first telescopic element 61, and since the cross section of the lifting support platform 3 is an inverted U-shape and is in an inclined state after falling, the lifting support platform 3 will gradually fit the ground and lift up the entire crawler chassis, and the first crawler 23 that has not fallen will slightly tilt to the other side, and combined with the support of the lifting support platform 3 and the continuous movement of the first crawler 23 that has not fallen, the position or angle of the fallen first crawler 23 will change, so that the entire crawler chassis can complete a certain degree of escape. It should be noted that after adjusting the position or angle of the fallen first crawler 23, the lifting support platform 3 will return to its original position.

[0022] like Figure 6 to Figure 7As shown, the second embodiment of the present invention is different from the first embodiment in that at least one end of the lifting support platform 3 is provided with two groups of support roller assemblies 7 and a second telescopic element 71 for pushing the support roller assembly 7 to change its angle, wherein the second telescopic element 71 is also an electric push rod, the middle part of the support roller assembly 7 is hingedly connected to the inner side of the lifting support platform 3, the end of the support roller assembly 7 is hingedly connected to the telescopic end of the second telescopic element 71, and when the telescopic end of the second telescopic element 71 is retracted, the surface of the support roller assembly 7 does not contact the ground. Specifically, the support roller assembly 7 includes a roller support frame 72 and a support wheel 73, one side of the lifting support platform 3 is extended outwardly to provide a placement plate 33, one end of the second telescopic element 71 is hingedly connected to the surface of the placement plate 33, and the other end of the second telescopic element 71 is also hingedly connected to one end of the roller support frame 72, the middle part of the roller support frame 72 is also hingedly connected to the surface of the placement plate 33, and the roller support frame 72 is hingedly connected to the surface of the placement plate 33. The other end is rotatably connected with a support wheel 73. After being set in this way, in order to make up for the fact that although the bottom of the lifting support platform 3 in the first embodiment can produce a supporting effect, the corresponding sliding ability is insufficient, and it cannot be adjusted on one side, it can only be lifted up together with the bottom of the entire lifting support platform 3 to adjust the angle or position of the entire crawler chassis. When the lifting of the lifting support platform 3 is subject to certain restrictions, the telescopic shaft of the second telescopic element 71 on the side of the first crawler 23 close to the trapped mud will extend, thereby driving the roller support frame 72 to start rotating. During rotation, the support wheel 73 will gradually fit the ground. At this time, the cooperation between the support wheel 73 and the first crawler 23 on the other side can easily adjust the angle of the entire crawler chassis, thereby getting out of the mud. Moreover, if this design mechanism encounters a relatively large slope, the telescopic shafts of the two second telescopic elements 71, so that the two support wheels will fit the ground, at this time the contact area of ​​the crawler chassis becomes larger, the center of gravity position is also lower, and it is not easy to tip over.

[0023] like Figure 8 As shown, the third embodiment of the present invention is a crawler agricultural vehicle, which adds corresponding agricultural accessories on the basis of the crawler chassis transmission system of the first embodiment or the second embodiment, and a first dust cover 81 is provided at the bottom of the lifting support platform 3, and the end of the drive shaft 411 of the engine 41 extends outward and passes through the first dust cover 81 to be connected to an implement support shell 82, and rectangular plates 83 are connected to the two sides of the implement support shell 82. After such arrangement, the drive shaft 411 of the engine 41 can not only drive the generator 43 when rotating, but also can drive the implement support shell 82 to rotate at the same time, and the rectangular plate 83 can be driven to rotate when the implement support shell 82 rotates.

[0024] like Figures 9 and 10As shown, the fourth embodiment of the present invention is a crawler agricultural vehicle, and corresponding agricultural accessories are added on the basis of the crawler chassis transmission system of the first embodiment or the second embodiment. A second dust cover plate 91 is provided at the bottom of the lifting support platform 3, and the end of the drive shaft 411 of the engine 41 extends outward and passes through the second dust cover plate 91 to be connected to the inside of the tilling support shell 92. The inside of the tilling support shell 92 is provided with a first bevel gear 93 and a second bevel gear 94, the first bevel gear 93 is connected to the drive shaft 411 of the engine 41, the second bevel gear 94 is transmission-connected to the first bevel gear 93 and a tilling rolling shaft 95 is connected to the middle thereof, and a plurality of tilling plates 96 are provided on the surface of the tilling rolling shaft 95. After such arrangement, the drive shaft 411 of the engine 41 can not only drive the generator 43 when rotating, but also can drive the first bevel gear 93 to rotate at the same time, and the first bevel gear 93 will drive the second bevel gear 94 to rotate, so that the axial transmission force becomes a horizontal transmission force, and when the second bevel gear 94 rotates, it will drive the tilling rolling shaft 95 and the tilling plate 96 to rotate simultaneously.

[0025] Working principle and use method of the present invention: First, a corresponding communication module can be set on the crawler chassis, so that an external user can use a remote control to operate the start and stop or speed of the crawler drive motor 46, and then start the engine 41 so that the drive shaft 411 can drive the first transmission wheel 42 to rotate, and the first transmission wheel 42 drives the second transmission wheel 44 to rotate through the transmission belt. When the second transmission wheel 44 rotates, it will drive the generator 43 to work, and the generator 43 will store the generated electric energy inside the battery pack 45. The battery pack 45 will generate an energy source for the crawler drive motor 46. When the crawler drive motor 46 rotates, it can drive the first drive wheel 21 to rotate. When the first drive wheel 21 rotates, it can drive the first crawler 23 to start moving. When the first crawler 23 moves, the first driven wheel 22 plays a supporting and guiding role. The use of this design mechanism makes the entire crawler chassis free of mileage anxiety; If the first crawler 23 on either side is trapped in the mud and is difficult to get out, the telescopic shaft of each first telescopic element 61 will retract, and the first telescopic element 61 will drive the first hinge point 531 of the second linkage plate 53 and the top of the first linkage plate 51 to rotate relative to the first linkage rod 52 during the retraction process. In the two rotation processes, the first linkage rod 52 plays a supporting and guiding role. At the same time, the third hinge point 533 of the second linkage plate 53 will rotate relative to the inner side of the vehicle body support frame 1, so that the second hinge point 532 and the top of the first linkage plate 51 can rotate relative to the first linkage rod 52. The fourth hinge point 534 is displaced, wherein the fourth hinge point 534 tends to displace downward, wherein the displacement of the second hinge point 532 drives the third linkage plate 54 to displace, and during the displacement of the third linkage plate 54, its end rotates relative to the second hinge point 532, and when the third linkage plate 54 is displaced, its other end rotates relative to the fifth hinge point 551 and drives the fourth linkage plate 55 to displace, so that the seventh hinge point 553 of the fourth linkage plate 55 tends to displace downward, and the second hinge point 532 When the inner side of the vehicle body support frame 1 is rotated relative to the vehicle body support frame 1, the fourth hinge point 534 and the seventh hinge point 553 will respectively rotate relative to the first hinge support block 31 and the second hinge support block 32 during the downward displacement movement. The first hinge support block 31 and the second hinge support block 32 are pushed by the fourth hinge point 534 and the seventh hinge point 553 to make the entire lifting support platform 3 move downward. Since this lifting process is controlled by the telescopic axis of the first telescopic element 61, and since the cross section of the lifting support platform 3 is an inverted U-shape , after falling, it is in an inclined state, then the lifting support platform 3 will gradually fit with the ground and lift up the entire crawler chassis, then the first crawler 23 that has not fallen will slightly tilt to the other side, and combined with the support of the lifting support platform 3 and the continuous movement of the first crawler 23 that has not fallen, the position or angle of the sunken first crawler 23 will change, so that the entire crawler chassis can complete a certain degree of escape. It should be noted that after adjusting the position or angle of the sunken first crawler 23, the lifting support platform 3 will return to its original position in the same way; If the bottom lifting of the lifting support platform 3 is restricted, the telescopic shaft of the second telescopic element 71 on the side of the first crawler 23 close to the trapped mud will extend, thereby driving the roller support frame 72 to start rotating. During rotation, the support wheel 73 will gradually fit the ground. At this time, the cooperation between the support wheel 73 and the first crawler 23 on the other side can easily adjust the angle of the entire crawler chassis, so as to get out of the mud. Moreover, if this design mechanism encounters a relatively large slope, the telescopic shafts of the two second telescopic elements 71 and the two support wheels will fit the ground. At this time, the contact area of ​​the crawler chassis becomes larger, and the center of gravity is lower, which is not easy to tip over.

[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A crawler chassis transmission system, comprising a vehicle body support frame (1), and crawler walking mechanisms (2) arranged on both sides of the vehicle body support frame (1), characterized in that: A lifting support platform (3) is provided between the crawler walking mechanisms (2) on both sides and below the vehicle body support frame (1); a crawler driving mechanism (4) is provided on the surface of the lifting support platform (3); a transmission end of the crawler driving mechanism (4) is capable of driving the crawler walking mechanism (2); a folding mechanism (5) and a folding driving mechanism (6) for driving the folding mechanism (5) to change height are also provided on both sides of the vehicle body support frame (1); and both sides of the lifting support platform (3) are connected to the folding mechanism (5).

2. The crawler chassis transmission system according to claim 1, characterized in that: The crawler drive mechanism (4) comprises an engine (41), a generator (43), a first transmission wheel (42), a second transmission wheel (44), a battery pack (45) and a crawler drive motor (46); the engine (41) and the generator (43) are both arranged on the surface of the lifting support platform (3); the end of the drive shaft (411) of the engine (41) is provided with a first transmission wheel (42); the end of the rotating shaft of the generator (43) is provided with a second transmission wheel (44); the first transmission wheel (42) and the second transmission wheel (44) are connected by a transmission belt; the battery pack (45) is arranged on one side of the vehicle body support frame (1); the crawler drive motor (46) is arranged on the top of both sides of the vehicle body support frame (1); and the rotating shaft of each crawler drive motor (46) is connected to the crawler walking mechanism (2).

3. The crawler chassis transmission system according to claim 2, characterized in that: The crawler walking mechanism (2) comprises a first driving wheel (21), a first driven wheel (22) and a first crawler belt (23); wheel support plates (11) are provided on both sides of the bottom of the vehicle body support frame (1) extending outward; a plurality of first driven wheels (22) are rotatably provided on the wheel support plate (11); the end of the rotating shaft of the crawler drive motor (46) is connected to the first driving wheel (21); and a first crawler belt (23) is provided around the surface of the first driving wheel (21) and the first driven wheel (22).

4. The crawler chassis transmission system according to claim 3, characterized in that: Each of the folding mechanisms (5) comprises a first linkage plate (51), a first linkage rod (52), a second linkage plate (53), a third linkage plate (54) and a fourth linkage plate (55); one end of the first linkage plate (51) is hinged to a side of the vehicle body support frame (1) close to the outside; the other end between the first linkage plates (51) on both sides is hinged to the first linkage rod (52); the surface of the second linkage plate (53) is provided with a first hinge point (531), a second hinge point (532), a third hinge point (533) and a fourth hinge point (534) in sequence from top to bottom; the first hinge point (531) is hinged to the surface of the first linkage rod (52); the second hinge point (533) is hinged to the surface of the first linkage rod (52); the third hinge point (534) is hinged to the surface of the second linkage rod (534); the first hinge point (531) is hinged to the surface of the first linkage rod (52); the second hinge point (534) is hinged to the surface of the first linkage rod (52); the third hinge point (534) is hinged to the surface of the first linkage rod (52); the third hinge point (534) is hinged to the surface of the second linkage rod (53); the third hinge point (534) is hinged to the surface of the first linkage rod (52 ... 2) is hinged to one end of a third linkage plate (54), the third hinge point (533) is hinged to the inner side of the vehicle body support frame (1), the fourth hinge point (534) is hinged to the first hinge support block (31) on the surface of the lifting support platform (3), the fourth linkage plate (55) is provided with a fifth hinge point (551), a sixth hinge point (552) and a seventh hinge point (553) in sequence from top to bottom, the other end of the third linkage plate (54) is hinged to the fifth hinge point (551), the sixth hinge point (552) is hinged to the inner side of the vehicle body support frame (1), and the seventh hinge point (553) is hinged to the second hinge support block (32) on the surface of the lifting support platform (3).

5. The crawler chassis transmission system according to claim 4, characterized in that: The folding drive mechanism (6) comprises a first telescopic element (61) and a drive support plate (62), one end of the drive support plate (62) is connected to one side of the vehicle body support frame (1), the other end of the drive support plate (62) is hinged to one end of the first telescopic element (61), and the telescopic shaft end of the other end of the first telescopic element (61) is hinged to the top of the first linkage plate (51) and the second hinge point (532) on the second linkage plate (53).

6. The crawler chassis transmission system according to claim 5, characterized in that: At least one end of the lifting support platform (3) is provided with a plurality of supporting roller assemblies (7) and a second telescopic element (71) for pushing the supporting roller assembly (7) to change its angle; the middle portion of the supporting roller assembly (7) is hingedly connected to the inner side of the lifting support platform (3); the end of the supporting roller assembly (7) is hingedly connected to the telescopic end of the second telescopic element (71); when the telescopic end of the second telescopic element (71) is retracted, the surface of the supporting roller assembly (7) does not contact the ground.

7. The crawler chassis transmission system according to claim 6, characterized in that: The support roller assembly (7) comprises a roller support frame (72) and a support wheel (73); a placement plate (33) is provided on one side of the lifting support platform (3) extending outward; one end of the second telescopic element (71) is hinged to the surface of the placement plate (33); the other end of the second telescopic element (71) is connected to one end of the roller support frame (72); the middle part of the roller support frame (72) is also hinged to the surface of the placement plate (33); and the other end of the roller support frame (72) is rotatably connected to the support wheel (73).

8. The crawler chassis transmission system according to claim 7, characterized in that: The first telescopic element (61) and the second telescopic element (71) are electric push rods, which are electrically connected to a battery pack (45) inside the vehicle body support frame (1); and the cross-section of the lifting support platform (3) is an inverted U-shape.

9. A crawler agricultural vehicle, comprising the crawler chassis transmission system according to any one of claims 2 to 8, characterized in that: A first dust cover (81) is provided at the bottom of the lifting support platform (3); an end of the drive shaft (411) of the engine (41) extends outward and passes through the first dust cover (81) to be connected to an equipment support shell (82); and rectangular plates (83) are connected to both sides of the equipment support shell (82).

10. A crawler agricultural vehicle, comprising the crawler chassis transmission system according to any one of claims 2 to 8, characterized in that: A second dust cover (91) is provided at the bottom of the lifting support platform (3); an end of the drive shaft (411) of the engine (41) extends outward and passes through the second dust cover (91) to be connected to the inside of the tilling support shell (92); a first bevel gear (93) and a second bevel gear (94) are provided inside the tilling support shell (92); the first bevel gear (93) is connected to the drive shaft (411) of the engine (41); the second bevel gear (94) is transmission-connected to the first bevel gear (93) and a tilling rolling shaft (95) is connected in the middle thereof; a plurality of tilling plates (96) are provided on the surface of the tilling rolling shaft (95).

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