Crawler chassis

Abstract

The utility model provides a crawler chassis which comprises a machine frame, two horizontal adjusting mechanisms and two crawler units, each crawler unit is connected with the machine frame through one horizontal adjusting mechanism, and each crawler unit comprises a crawler, a crawler support, a tensioning wheel assembly, a thrust wheel assembly, a driving wheel and a riding wheel. The tensioning wheel assembly comprises a first buffering assembly, a first connecting frame and a tensioning wheel. The thrust wheel assembly comprises a second buffering assembly, two second connecting frames and a thrust wheel. In this way, when the crawler chassis encounters a slope in the running process, the front end of the crawler chassis is pressed through the tensioning wheel assembly to adjust the contact face in a self-adaptive mode and is matched with the first buffering assembly for vibration reduction, and meanwhile the thrust wheel assembly adapts to the slope surface when passing through the slope and is matched with the second connecting frame to compress towards the middle to be combined with the second buffering assembly for vibration reduction; therefore, the adaptive capacity of the crawler chassis to the rugged road surface is greatly improved, and meanwhile vibration is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of tracked equipment technology, and in particular to a tracked chassis. Background Technology

[0002] A tracked chassis is a walking device used to move machinery on various terrains. In large agricultural machinery, tracked chassis are often used to reduce soil compaction and provide better traction and stability.

[0003] In the existing tracked chassis, when encountering uneven road surfaces during operation, the tracks deform significantly, resulting in poor adaptability and making driving difficult. This increases fuel consumption, raises costs, and also generates significant vibrations, affecting the driver.

[0004] Therefore, it is necessary to propose a tracked chassis to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0005] The main objective of this invention is to provide a tracked chassis that solves the problem that existing tracked chassis have poor adaptability to rough and uneven roads and are prone to large vibrations.

[0006] To achieve the above objectives, this utility model provides a tracked chassis, including a frame, two horizontal adjustment mechanisms, and two track units laterally opposite to each other on both sides of the frame. Each track unit is connected to the frame via one of the horizontal adjustment mechanisms; wherein,

[0007] Each track unit includes a track, a track support, a tensioner assembly, a track roller assembly, a drive wheel, and a carrier roller. One end of the horizontal adjustment mechanism is hinged to the frame, and the other end of the horizontal adjustment mechanism is hinged to the track support. The horizontal adjustment mechanism itself is telescopically configurable.

[0008] The tension wheel assembly includes a first buffer assembly, a first connecting frame, and a tension wheel. The first connecting frame is hinged to the front end of the track support, and the tension wheel is rotatably connected to the first connecting frame. One end of the first buffer assembly is connected to the track support, and the other end of the first buffer assembly is connected to the first connecting frame.

[0009] The track roller assembly includes a second buffer assembly, two second connecting frames, and a track roller. The middle parts of the two second connecting frames are hinged to the bottom middle part of the track support. The bottom end of each second connecting frame is connected to the track roller, which is rotatably mounted. The second buffer assembly is connected between the top ends of the two second connecting frames.

[0010] The drive wheel is rotatably connected to the rear end of the track support, the support roller is rotatably connected to the top end of the track support, and the inner side of the track is engaged with the tension wheel, the support roller, the drive wheel, and the support roller.

[0011] Preferably, each of the second connecting frames is bent, and the middle portions of the two second connecting frames are hinged together to form an X shape.

[0012] Preferably, the first connecting frame is inclined forward from the bottom to the top.

[0013] Preferably, each of the horizontal adjustment mechanisms includes a drive assembly and a first connecting arm. The first connecting arm has a lug plate protruding from the side near the drive assembly. The drive assembly is obliquely disposed between the frame and the lug plate. One end of the drive assembly is hinged to the middle of the frame, and the other end of the drive assembly is hinged to the lug plate. One end of the first connecting arm is hinged to one side of the frame, and the other end of the first connecting arm is hinged to the inner front end of the track support.

[0014] Preferably, the tensioning wheel includes a tensioning main wheel and a tensioning auxiliary wheel. The tensioning main wheel is rotatably connected to both sides of the high end of the first connecting frame, and the tensioning auxiliary wheel is rotatably connected to both sides of the low end of the first connecting frame.

[0015] Preferably, the diameter of the tensioning main wheel is larger than the diameter of the tensioning secondary wheel.

[0016] Preferably, each of the support rollers includes a wheel frame and four bottom rollers, the bottom end of the second connecting frame is hinged to the middle of the wheel frame, and the four bottom rollers are arranged in a matrix around the wheel frame.

[0017] Preferably, it further includes two second connecting arms arranged laterally opposite each other, one end of the second connecting arm is hinged to the rear end of the frame, and the other end of the second connecting arm is hinged to the inner side of the middle of the track support.

[0018] Preferably, both the first buffer component and the second buffer component are dampers.

[0019] Preferably, the drive assembly is a hydraulic cylinder.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a tracked chassis, comprising a frame, two horizontal adjustment mechanisms, and two track units arranged laterally opposite to each other on both sides of the frame. Each track unit is connected to the frame through a horizontal adjustment mechanism. Each track unit includes a track, a track support, a tension wheel assembly, a support roller assembly, a drive wheel, and a carrier roller. The tension wheel assembly includes a first buffer assembly, a first connecting frame, and a tension wheel. The first connecting frame is hinged to the front end of the track support. The support roller assembly includes a second buffer assembly, two second connecting frames, and a support roller. The middle parts of the two second connecting frames are hinged together to the bottom middle part of the track support. The inner side of the track is engaged with the tension wheel, support roller, drive wheel, and carrier roller. When the tracked chassis encounters a slope during operation, the front end is first compressed by the tensioning wheel assembly. With the help of the hinge, it can adaptively adjust the contact surface according to the slope and reduce vibration with the help of the first buffer assembly. At the same time, when the support roller assembly in the middle of the bottom end passes over the slope, it is adapted to the slope by the hinge and compressed towards the middle by two oppositely set second connecting frames to cooperate with the second buffer assembly to reduce vibration. This greatly improves the tracked chassis's adaptability to rough roads and significantly reduces vibration. At the same time, a horizontal adjustment mechanism is set to adjust the spacing between the track units, which further increases the horizontal adaptability and adjustment capability and improves the convenience of operation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure in one embodiment of the present utility model;

[0024] Figure 2 This is a side view of the overall structure in one embodiment of the present utility model;

[0025] Figure 3 This is a plan view of the track unit adjusting its horizontal position in one embodiment of the present invention.

[0026] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0027] Explanation of icon numbers:

[0028] 10. Track unit; 110. Track; 120. Track support; 130. Tensioner assembly; 131. First buffer assembly; 132. First connecting frame; 133. Tensioner; 1331. Tensioner main wheel; 1332. Tensioner auxiliary wheel; 140. Track roller assembly; 141. Second buffer assembly; 142. Second connecting frame; 143. Track roller; 1431. Wheel frame; 1432. Bottom wheel; 150. Drive wheel; 160. Support roller; 20. Horizontal adjustment mechanism; 210. Drive assembly; 220. First connecting arm; 221. Ear plate; 230. Second connecting arm; 30. Frame. Detailed Implementation

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] Please see the appendix Figure 1-3This utility model provides a tracked chassis in one embodiment, comprising a frame 30, two horizontal adjustment mechanisms 20, and two track units 10 arranged laterally opposite to each other on both sides of the frame 30. Each track unit 10 is connected to the frame 30 via one of the horizontal adjustment mechanisms 20. First, it should be noted that in this application, "lateral" refers to the width direction of the frame 30, "front end" refers to the direction of travel of the tracked chassis, and "rear end" refers to the tail end of the travel path. Unlike existing tracked chassis, which experience significant track deformation and poor adaptability when encountering uneven road surfaces, leading to difficulty in driving, increased fuel consumption, higher costs, and significant vibration affecting the driver, this application addresses these shortcomings of the prior art by providing a tracked chassis, as detailed below:

[0034] Each track unit 10 includes a track 110, a track support 120, a tension wheel assembly 130, a track roller assembly 140, a drive wheel 150, and a carrier roller 160. One end of the horizontal adjustment mechanism 20 is hinged to the frame 30, and the other end of the horizontal adjustment mechanism 20 is hinged to the track support 120. The horizontal adjustment mechanism 20 itself is telescopically configurable. The tension wheel assembly 130 includes a first buffer assembly 131, a first connecting frame 132, and a tension wheel 133. The first connecting frame 132 is hinged to the front end of the track support 120, and the tension wheel 133 is rotatably connected to the first connecting frame 132. One end of the first buffer assembly 131 is connected to the track support 120, and the other end of the first buffer assembly 131... One end is connected to the first connecting frame 132; the support roller assembly 140 includes a second buffer assembly 141, two second connecting frames 142 and a support roller 143. The middle parts of the two second connecting frames 142 are hinged to the bottom middle part of the track support 120. The bottom end of each second connecting frame 142 is connected to the support roller 143, which is rotatably disposed. The second buffer assembly 141 is connected between the top ends of the two second connecting frames 142. The drive wheel 150 is rotatably connected to the rear end of the track support 120. The idler wheel 160 is rotatably connected to the top end of the track support 120. The inner side of the track 110 is engaged with the tension wheel 133, the support roller 143, the drive wheel 150 and the idler wheel 160.

[0035] Specifically, the tracked chassis in this application includes a frame 30, two horizontal adjustment mechanisms 20, and two track units 10. The frame 30 is used to mount the two track units 10, which are arranged opposite to each other on both sides of the frame 30. The horizontal adjustment mechanisms 20 are used to adjust the distance between the two track units 10 and their position in the direction of travel. Therefore, the horizontal adjustment mechanism 20 is telescopically adjustable to adjust the horizontal position of the track unit 10 by telescopic adjustment. One end of the horizontal adjustment mechanism 20 is hinged to the frame 30. This hinged connection allows for small-amplitude rotational changes during telescopic adjustment, avoiding structural damage caused by rigid connection. Therefore, each track unit 10 is connected to one horizontal adjustment mechanism 20.

[0036] Each track unit 10 includes a track 110, a track bracket 120, a tension wheel assembly 130, a support roller assembly 140, a drive wheel 150, and a carrier roller 160. The track bracket 120 is used to install each track wheel. Therefore, the horizontal adjustment mechanism 20 is directly connected to the track bracket 120 for telescopic adjustment during connection. The tension wheel assembly 130 serves as the front track wheel, and is therefore installed at the front end to be the first track wheel to contact the slope. It includes a first buffer assembly 131, a first connecting frame 132, and a tension wheel 133. The first connecting frame 132 is used to support the tension wheel 133. In this installation, the first buffer assembly 131 is used for vibration reduction. When the tension wheel 133 presses against the slope, since the first connecting frame 132 is hinged to the front end of the track support 120, the tension wheel 133 can adapt to the slope and rotate to an angle parallel to the slope. After being pressed against the slope, since the first buffer assembly 131 is connected to the track support 120 and the first connecting frame 132, the pressure is transmitted to the first buffer assembly 131, which buffers and absorbs energy to achieve the effect of vibration reduction. In a preferred embodiment of this application, the first buffer assembly 131 is a damper.

[0037] Preferably, the track roller assembly 140 serves as a track wheel at the bottom center, bearing most of the pressure generated during travel and supporting the weight of the machine. It includes a second buffer assembly 141, two second connecting frames 142, and a track roller 143. The second connecting frames 142 are used for mounting the track rollers 143, so that each second connecting frame 142 has a track roller 143 connected to its bottom end. The two second connecting frames 142 are hinged together in the middle. When the bottom passes through a rough slope, the two hinged second connecting frames 142 are inclined parallel to the uphill and downhill slopes respectively, and apply pressure to the middle. At this time, the second buffer assembly 141 connected to the top of the two second connecting frames 142 is compressed to buffer and absorb energy to achieve a vibration reduction effect. Similar to the first buffer assembly 131, the second buffer assembly 141 can also be a damper, which has a better vibration reduction effect and a compact structure that is easy to install.

[0038] Furthermore, the drive wheel 150 serves as the rear track wheel, rotatably connected to the rear end of the track support 120 for transmitting power and acting as a rear-drive wheel; while the support roller 160 serves as the top track wheel, rotatably connected to the top of the track support 120 for supporting the upper part of the track 110, preventing the track 110 from sagging, reducing swaying and improving stability. In this way, all the track wheels mesh with the inner side of the track 110 to form a track unit 10, which can adapt to various road surfaces and slopes, has good adaptability, and has a better vibration reduction effect.

[0039] In a preferred embodiment of the present invention, each of the second connecting frames 142 is bent, and the middle portions of the two second connecting frames 142 are hinged together to form an X shape.

[0040] It should be noted that the two second connecting frames 142 are respectively bent in the shape of ">" and "<" opposite to each other, so that they form an X shape after being hinged in the middle. Thus, when the support rollers 143 at the bottom of the two second connecting frames 142 are compressed, they retract towards the middle, and the second buffer assembly 141 connecting the tops of the two second connecting frames 142 also retracts towards the middle. This structural form is more convenient to cooperate with the damper, especially the track wheel part, which is the main force-bearing part at the bottom, so as to reduce vibration under the action of the damper.

[0041] In a preferred embodiment of the present invention, the first connecting frame 132 is inclined forward from the bottom to the top.

[0042] It should be noted that the tensioning wheel assembly 130 is designed to be the first part to contact the slope of the rugged road section, so it is pre-set to be inclined in order to better contact the slope of the rugged road section and improve the adaptability of the structure.

[0043] In a preferred embodiment of the present invention, each of the horizontal adjustment mechanisms 20 includes a drive assembly 210 and a first connecting arm 220. The first connecting arm 220 has a protruding ear plate 221 on the side near the drive assembly 210. The drive assembly 210 is obliquely disposed between the frame 30 and the ear plate 221. One end of the drive assembly 210 is hinged to the middle of the frame 30, and the other end of the drive assembly 210 is hinged to the ear plate 221. One end of the first connecting arm 220 is hinged to one side of the frame 30, and the other end of the first connecting arm 220 is hinged to the inner front end of the track support 120.

[0044] It is worth noting that the drive assembly 210 is used to drive the first connecting arm 220 to move. In a preferred embodiment of this application, the drive assembly 210 can be a hydraulic cylinder, which is a commonly used telescopic drive device. The first connecting arm 220 is used to connect the drive assembly 210 and the track support 120. The ear plate 221 protruding from the inner side of the first connecting arm 220 is used for the drive assembly 210 to connect. It should be noted that the drive assembly 210 is inclined so that it can not only adjust the distance between the two track units 10, but also slightly adjust the longitudinal position of the track unit 10 to improve the convenience and comprehensiveness of adjustment. One end of the first connecting arm 220 is hinged to one side of the frame 30 so that the entire first connecting arm 220 can rotate around this point, while the other end of the first connecting arm 220 is hinged to the inner side of the front end of the track support 120 to drive and adjust the front end of the track support 120.

[0045] Furthermore, it also includes two second connecting arms 230 arranged laterally opposite each other. The second connecting arms 230 are used to keep the entire track unit 10 from shifting when driven horizontally, so that the rear end maintains consistency with the front end when moving. Therefore, one end of the second connecting arm 230 is hinged to the rear end of the frame 30, and the other end of the second connecting arm 230 is hinged to the inner side of the middle of the track support 120.

[0046] In a preferred embodiment of the present invention, the tensioning wheel 133 includes a tensioning main wheel 1331 and a tensioning auxiliary wheel 1332. The tensioning main wheel 1331 is rotatably connected to both sides of the high end of the first connecting frame 132, and the tensioning auxiliary wheel 1332 is rotatably connected to both sides of the low end of the first connecting frame 132.

[0047] It is worth noting that a structure with a main wheel and a secondary wheel is adopted, and the tensioning main wheel 1331 and the tensioning secondary wheel 1332 are both in pairs to increase the contact area between the front end and the cross-section and to distribute the pressure.

[0048] Furthermore, the diameter of the tensioning main wheel 1331 is larger than the diameter of the tensioning secondary wheel 1332.

[0049] It should be noted that since the first connecting frame 132 is inclined, when it comes into contact with the slope, the higher end will make contact first. Therefore, the diameter of the tensioning main wheel 1331 at the higher end is increased to increase the contact area, so as to distribute greater pressure and reduce resistance, thereby further enhancing driving stability.

[0050] Furthermore, each of the support rollers 143 includes a wheel frame 1431 and four bottom rollers 1432. The bottom end of the second connecting frame 142 is hinged to the middle of the wheel frame 1431, and the four bottom rollers 1432 are arranged in a matrix around the wheel frame 1431.

[0051] It should be understood that the wheel frame 1431 is used for mounting the bottom wheel 1432 and is connected to the bottom end of the second connecting frame 142. Each wheel frame 1431 adopts a matrix arrangement of four bottom wheels 1432 to increase the contact surface with the ground, thereby reducing pressure and resistance and improving stability.

[0052] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tracked chassis, characterized in that, The system includes a frame, two horizontal adjustment mechanisms, and two track units arranged laterally opposite each other on both sides of the frame. Each track unit is connected to the frame via one of the horizontal adjustment mechanisms. Each track unit includes a track, a track support, a tensioner assembly, a track roller assembly, a drive wheel, and a carrier roller. One end of the horizontal adjustment mechanism is hinged to the frame, and the other end of the horizontal adjustment mechanism is hinged to the track support. The horizontal adjustment mechanism itself is telescopically configurable. The tension wheel assembly includes a first buffer assembly, a first connecting frame, and a tension wheel. The first connecting frame is hinged to the front end of the track support, and the tension wheel is rotatably connected to the first connecting frame. One end of the first buffer assembly is connected to the track support, and the other end of the first buffer assembly is connected to the first connecting frame. The track roller assembly includes a second buffer assembly, two second connecting frames, and a track roller. The middle parts of the two second connecting frames are hinged to the bottom middle part of the track support. The bottom end of each second connecting frame is connected to the track roller, which is rotatably mounted. The second buffer assembly is connected between the top ends of the two second connecting frames. The drive wheel is rotatably connected to the rear end of the track support, the support roller is rotatably connected to the top end of the track support, and the inner side of the track is engaged with the tension wheel, the support roller, the drive wheel, and the support roller.

2. The tracked chassis according to claim 1, characterized in that, Each of the second connecting frames is bent, and the middle of the two second connecting frames are hinged together to form an X shape.

3. The tracked chassis according to claim 1, characterized in that, The first connecting frame is inclined forward from the bottom to the top.

4. The tracked chassis according to claim 1, characterized in that, Each of the horizontal adjustment mechanisms includes a drive assembly and a first connecting arm. The first connecting arm has a lug plate protruding from the side near the drive assembly. The drive assembly is obliquely disposed between the frame and the lug plate. One end of the drive assembly is hinged to the middle of the frame, and the other end of the drive assembly is hinged to the lug plate. One end of the first connecting arm is hinged to one side of the frame, and the other end of the first connecting arm is hinged to the inner front end of the track support.

5. The tracked chassis according to claim 3, characterized in that, The tensioning wheel includes a tensioning main wheel and a tensioning auxiliary wheel. The tensioning main wheel is rotatably connected to both sides of the high end of the first connecting frame, and the tensioning auxiliary wheel is rotatably connected to both sides of the low end of the first connecting frame.

6. The tracked chassis according to claim 5, characterized in that, The diameter of the tensioning main wheel is larger than the diameter of the tensioning secondary wheel.

7. The tracked chassis according to claim 1, characterized in that, Each of the support rollers includes a wheel frame and four bottom rollers. The bottom end of the second connecting frame is hinged to the middle of the wheel frame, and the four bottom rollers are arranged in a matrix around the wheel frame.

8. The tracked chassis according to claim 4, characterized in that, It also includes two second connecting arms arranged laterally opposite each other, one end of the second connecting arm is hinged to the rear end of the frame, and the other end of the second connecting arm is hinged to the inner side of the middle of the track support.

9. The tracked chassis according to claim 1, characterized in that, Both the first buffer component and the second buffer component employ dampers.

10. The tracked chassis according to claim 4, characterized in that, The drive component uses a hydraulic cylinder.

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