Crawler belt structure and rotary cultivator

Abstract

The utility model relates to the field of rotary cultivators, in particular to a caterpillar band structure and a rotary cultivator, the caterpillar band structure comprises a chassis, a driving mechanism and a caterpillar band, the two sides of the chassis are provided with caterpillar band frames extending outwards, the driving mechanism comprises a driving assembly, a driving wheel and a driven wheel, and the driving end of the driving assembly is in driving connection with the driving wheel; the inner side face of the crawler belt is provided with two blocking protrusion sets arranged at intervals, the crawler belt is arranged on the circumferential sides of the crawler belt frame, the driving wheel and the driven wheel in a winding mode, the crawler belt frame is provided with an inner blocking assembly and an outer blocking assembly, and the blocking protrusion sets arranged at intervals are arranged in the crawler belt. The inner blocking assembly and the outer blocking assembly are arranged between the blocking protrusion sets and on the outer side of the blocking protrusion sets to guide the crawler belt, and when the crawler belt deviates, limiting force is applied to the inner sides and the outer sides of the blocking protrusion sets, so that the situation that the crawler belt is disengaged from the driving wheel and the driven wheel, and work of the rotary cultivator is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rotary tillers, specifically to a tracked structure and a rotary tiller. Background Technology

[0002] A rotary tiller is a type of tillage machinery used in conjunction with a tractor, primarily for plowing and harrowing. It plays a vital role in agricultural production due to its powerful soil-breaking ability and the smooth surface it creates. The working principle of a rotary tiller is based on the active rotation of its working parts, using a milling principle to process the soil. During operation, the power output from the tractor drives the rotary blades to cut and turn the soil. The blades first cut off the clods, then throw them backward. The clods break upon impact with the casing and the trailing plate, finally falling back to the surface and being leveled by the trailing plate. As the unit moves forward, the blades continuously loosen and level the uncultivated land, thus achieving the purpose of tillage. The characteristics of a rotary tiller not only lie in its excellent soil-breaking and mixing performance and the smooth surface it creates, but also in its ability to chop up stubble buried underground, providing a good seedbed for later sowing.

[0003] For example, the invention patent with application number CN201410092369.X, entitled "Rotary Tiller," includes a tracked chassis for walking; a first clutch for driving the tracked chassis; a rotary tiller for rotary tilling; a second clutch for driving the rotary tiller; and a walking power device. However, the structure of this tracked chassis is relatively simple, and when moving on rough roads, the tracks and wheels are prone to detaching, affecting the operation of the rotary tiller. Utility Model Content

[0004] The purpose of this utility model is to provide a tracked structure and a rotary tiller, which aims to improve the problem that the existing tracked structure is relatively simple and that the track and wheel are prone to detachment when moving on rough roads, affecting the operation of the rotary tiller.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A tracked structure includes a chassis, a drive mechanism, and tracks.

[0007] The chassis is equipped with outward-extending track frames on both sides.

[0008] The drive mechanism includes a drive assembly, a drive wheel, and a driven wheel. The drive wheel and the driven wheel are rotatably mounted on the front and rear sides of the track frame, respectively. The drive end of the drive assembly is drivenly connected to the drive wheel.

[0009] The inner side of the track is provided with two sets of spaced-apart blocking protrusions. The blocking protrusions extend along the length of the track. The track is wrapped around the track frame, the drive wheel and the driven wheel. The track frame is provided with an inner blocking component and an outer blocking component. The inner blocking component is located between the two sets of blocking protrusions, and the outer blocking component is located outside the two sets of blocking protrusions.

[0010] Furthermore, the driving wheel and the driven wheel are located between the two sets of blocking protrusions, and the inner side of the track is provided with a drive groove, which meshes with the teeth of the driving wheel.

[0011] Furthermore, the inner blocking assembly includes at least one blocking rod, which is fixed to the bottom of the track frame and extends along the length of the track. Both the front and rear ends of the blocking rod are provided with upwardly inclined clearance bending sections.

[0012] Furthermore, the outer blocking assembly includes multiple sets of blocking wheels, with the blocking wheels in the same set rotatably disposed on both sides of the track frame, and the bottom of the blocking wheels extending to the side of the blocking protrusion set.

[0013] Furthermore, the blocking protrusion group includes a plurality of blocking protrusions, which are spaced apart in the extending direction of the track, and the spacing between adjacent blocking protrusions is greater than the width of the blocking protrusion.

[0014] The two sides of the blocking protrusion are respectively inclined downward from the top inner side toward the inner blocking component and the outer blocking component, and the two sides of the blocking protrusion are respectively spaced apart from the inner blocking component and the outer blocking component.

[0015] Furthermore, the track frame includes track crossbars and track vertical bars, with the track vertical bars vertically fixed to the top surface of the track crossbars; the outer blocking assembly is disposed on both sides of the track crossbars and track vertical bars, and the inner blocking assembly is disposed on the bottom surface of the track crossbars.

[0016] Furthermore, the chassis includes connecting bent tubes and connecting crossbars, the horizontal portions of the connecting bent tubes are connected to the two ends of the track frame in pairs, and the two ends of the connecting crossbars are connected between the vertical portions of the opposite connecting bent tubes.

[0017] The drive assembly is fixed to the front end of a set of connecting bending pipes.

[0018] Furthermore, it also includes a mounting frame, which comprises a base frame and a top frame.

[0019] The vertical part has a downwardly extending limiting part at its end. The base frame is embedded and fixed on the limiting part, and the top frame is fixed on the top surface of the base frame and connected to the external vehicle body structure.

[0020] Furthermore, the base frame includes a first horizontal bar, a second horizontal bar, a third horizontal bar, and a first vertical bar. The second horizontal bar is fixed to both ends of the first horizontal bar and protrudes from the first horizontal bar. One end of the first vertical bar is fixedly connected to the two second horizontal bars respectively. The two ends of the third horizontal bar are fixedly connected to the other end of the first vertical bar.

[0021] A first notch and a second notch are provided on the limiting part of a set of opposite connecting bending tubes. The vertical height of the first notch is less than the vertical height of the second notch. The two ends of the first crossbar are embedded in the first notch and abut against the bottom of the second notch. The two ends of the second crossbar pass through the second notch and extend outward. A first bonding plate extending outward is provided on one side of the second notch. The first bonding plate abuts against the outer side of the first vertical bar.

[0022] Another set of opposite connecting bending tubes are fixed with oppositely arranged second bonding plates. The other end of the first vertical rod is pressed on the limiting part. The end of the second bonding plate is in abutting contact with the side of the first vertical rod. The third horizontal rod is fitted between the second bonding plates.

[0023] To achieve the above objectives, the present invention adopts the following technical solution:

[0024] A rotary tiller including the track structure.

[0025] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0026] The drive wheel and driven wheel tension the track, and the drive assembly drives the track through the drive wheel to ensure that the chassis can move forward stably. The track is equipped with a set of spaced blocking protrusions, and inner blocking components and outer blocking components are set between the blocking protrusions and on the outside to guide the track. When the track deviates, limiting forces are applied to the inner and outer sides of the blocking protrusions to prevent the track from falling off the drive wheel and driven wheel and affecting the operation of the rotary tiller. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the track structure described in this utility model;

[0028] Figure 2 This is a cross-sectional structural diagram of the track structure described in this utility model;

[0029] Figure 3 This is a partial structural diagram of the track structure described in this utility model;

[0030] Figure 4 This is a schematic diagram of the track frame structure of the track structure described in this utility model;

[0031] Figure 5 This is a schematic diagram of the chassis and mounting frame structure of the track structure described in this utility model;

[0032] Figure 6 This is an exploded structural diagram of the chassis and mounting frame of the track structure described in this utility model;

[0033] Figure 7 This is a schematic diagram of the chassis and mounting frame bottom structure of the track structure described in this utility model;

[0034] Figure 8 This is an exploded view of the bottom structure of the chassis and mounting frame of the track structure described in this utility model;

[0035] Figure 9 This is a schematic diagram of the track structure of the track structure described in this utility model;

[0036] Figure 10 This is a schematic diagram of the rotary tiller described in this utility model.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Chassis; 11. Track frame; 111. Track crossbar; 112. Track vertical bar; 12. Inner blocking assembly; 121. Blocking bar; 122. Yield bending section; 13. Outer blocking assembly; 131. Blocking wheel; 14. Connecting bending tube; 141. Limiting part; 142. First notch; 143. Second notch; 144. First bonding plate; 145. Second bonding plate; 15. Connecting crossbar; 16. Drive shaft frame;

[0039] 2. Drive mechanism; 21. Drive assembly; 22. Drive wheel; 221. Gear body; 23. Driven wheel; 24. Drive handle;

[0040] 3. Tracks; 31. Anti-blocking protrusion group; 311. Anti-blocking protrusion;

[0041] 4. Mounting frame; 41. Base frame; 411. First horizontal bar; 412. Second horizontal bar; 413. Third horizontal bar; 414. First vertical bar; 42. Top frame. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0043] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0045] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Example

[0047] Please refer to Figure 1-9 As shown, this embodiment provides a track structure, including a chassis 1, a drive mechanism 2, and a track 3. Track frames 11 extending outwards are provided on both sides of the chassis 1. The drive mechanism 2 includes a drive assembly 21, a drive wheel 22, and a driven wheel 23. The drive wheel 22 and the driven wheel 23 are rotatably disposed on the front and rear sides of the track frame 11, respectively. The drive end of the drive assembly 21 is drivenly connected to the drive wheel 22. Two sets of spaced-apart blocking protrusions 31 are provided on the inner side of the track 3, extending along the length of the track 3. The track 3 is wound around the track frame 11, the drive wheel 22, and the driven wheel 23. An inner blocking assembly 12 and an outer blocking assembly 13 are provided on the track frame 11. The inner blocking assembly 12 is located between the two sets of blocking protrusions 31, and the outer blocking assembly 13 is located outside the two sets of blocking protrusions 31. In this embodiment, the two sets of spaced-apart blocking protrusions 31 are located on both sides of the central axis of the track 3.

[0048] The drive wheel 22 and driven wheel 23 tension the track 3, and the drive assembly 21 drives the track 3 through the drive wheel 22 to ensure that the chassis 1 can move forward stably. The track 3 is provided with spaced blocking protrusions 31 inside, and the track 3 is guided by the inner blocking assembly 12 and the outer blocking assembly between the blocking protrusions 31 and on the outside. When the track 3 deviates, the inner and outer sides of the blocking protrusions 31 are applied with limiting force to prevent the track 3 from falling off the drive wheel 22 and driven wheel 23 and affecting the operation of the rotary tiller.

[0049] The drive wheel 22 and driven wheel 23 are located between two sets of blocking protrusions 31. A drive groove (not shown in the attached diagram) is provided on the inner side of the track 3, and the drive groove meshes with the teeth 221 of the drive wheel 22. When the drive wheel 22 rotates, it drives the track 3 to rotate via the teeth 221 and the drive groove. The drive groove provides a contact plane with the teeth 221, ensuring that the drive wheel 22 can provide stable thrust to the track 3, thus improving driving efficiency.

[0050] Furthermore, the inner blocking assembly 12 includes at least one blocking rod 121, which is fixed to the bottom of the track frame 11 and extends along the length of the track 3. Both ends of the blocking rod 121 have upwardly inclined clearance bending sections 122. The blocking rod 121 is located between two sets of blocking protrusions 31, and its extension direction increases the limiting space for the blocking protrusions 31, maximizing the prevention of track 3 deviation on the inner side. The upward inclination of the clearance bending sections 122 avoids the drive groove, preventing the blocking rod 121 from abutting against the drive groove during track 3 movement and affecting track 3 forward movement. In this embodiment, there are two blocking rods 121 inside the track 3, located at the front and rear ends of the bottom of the track frame 11.

[0051] Furthermore, the outer blocking assembly 13 includes multiple sets of blocking wheels 131, which are rotatably mounted on both sides of the track frame 11. The bottom of the blocking wheels 131 extends to the side of the blocking protrusion assembly 31. The blocking wheels 131 limit the blocking protrusion assembly 31 on both sides, cooperating with the inner blocking assembly 12 to limit the blocking protrusion assembly 31 in multiple directions, further preventing the track 3 from deviating. The blocking wheels 131, which are themselves rotatable, also provide support to the track 3 during its movement, ensuring the stability of the track 3's movement.

[0052] In this embodiment, the track frame 11 includes a track crossbar 111 and a track vertical bar 112, with the track vertical bar 112 vertically fixed to the top surface of the track crossbar 111. An outer blocking assembly 13 is disposed on both sides of the track crossbar 111 and the track vertical bar 112, while an inner blocking assembly 12 is disposed on the bottom surface of the track crossbar 111. The length direction of the track crossbar 111 is the same as the length direction of the track 3, providing more installation space for the inner blocking assembly 12 and the outer blocking assembly 13, and providing a wider range of blocking and limiting for the track 3. In this embodiment, there are seven sets of blocking wheels 131. One set of blocking wheels 131 is rotatably disposed at the top free end of the track vertical bar 112, supporting the inner top of the track 3. The remaining blocking wheels 131 are rotatably disposed at the bottom side of the track crossbar 111 and are spaced apart along the length direction of the track crossbar 111, providing a wide range of support for the inner bottom of the track 3. Furthermore, one set of blocking wheels 131 is rotatably mounted on the top side of the track crossbar 111, such that the bottom of the blocking wheel 131 is spaced apart from the inner bottom surface of the track 3. Moreover, the set of blocking wheels 131 is located on the center axis of gravity of the track structure, providing a buffer when the track structure crosses raised obstacles or inclined surfaces, and ensuring the stability of the track structure's movement.

[0053] In this embodiment, the blocking protrusion group 31 includes multiple blocking protrusions 311, which are spaced apart in the extending direction of the track 3. The distance between adjacent blocking protrusions 311 is greater than the width of the blocking protrusion 311, ensuring that adjacent blocking protrusions 311 will not collide during travel. Specifically, the two sides of the blocking protrusion 311 are inclined downward from the top inner side toward the inner blocking assembly 12 and the outer blocking assembly 13, respectively, and are spaced apart from the inner blocking assembly 12 and the outer blocking assembly 13. The two sides of the blocking protrusion 311 give way to the inner blocking assembly 12 and the outer blocking assembly 13, so that the inner blocking assembly 12 and the outer blocking assembly 13 are separated from the blocking protrusion 311 under normal driving conditions, avoiding friction between them and affecting the traveling efficiency of the track 3.

[0054] Furthermore, the chassis 1 includes connecting bent tubes 14 and connecting crossbars 15. The horizontal portions of the connecting bent tubes 14 are connected in pairs to both ends of the track frame 11. Specifically, there are four connecting bent tubes 14, which are connected in pairs to both ends of the track crossbar 111. The two ends of the connecting crossbar 15 are connected between the vertical portions of the opposing connecting bent tubes 14. The connecting crossbar 15 supports the connecting bent tubes 14 in the same group, ensuring that the chassis 1 has good structural strength.

[0055] The drive assembly 21 is fixed to the front end of a set of connecting bent tubes 14. In this embodiment, the drive assembly 21 is fixed to the front end of the connecting bent tubes 14 located on the front side. Specifically, a drive shaft bracket 16 is fixed to the front end of the connecting bent tubes 14 located on the front side. Drive handles 24 are connected to the drive ends on both sides of the drive assembly 21. The drive handles 24 pass through the drive shaft bracket 16 and are connected to the drive wheel 22. In this embodiment, the drive assembly 21 is a conventional vehicle drive assembly 21 used to drive the drive handles 24 to rotate, thereby driving the drive wheel 22 to rotate. Further details are omitted here.

[0056] Please refer to Figure 5-8 As shown, the track structure further includes a mounting frame 4, which comprises a base frame 41 and a top frame 42. A downwardly extending limiting portion 141 is provided at the end of the vertical section connecting the bent tube 14. The base frame 41 is embedded and fixed in the limiting portion 141, and the top frame 42 is fixed to the top surface of the base frame 41 and connected to the external vehicle body structure. The limiting portion 141 limits the installation of the base frame 41, improving its stability.

[0057] Specifically, the base frame 41 includes a first horizontal bar 411, a second horizontal bar 412, a third horizontal bar 413, and a first vertical bar 414; the second horizontal bar 412 is fixed to both ends of the first horizontal bar 411 and protrudes from the first horizontal bar 411; one end of the first vertical bar 414 is fixedly connected to the two second horizontal bars 412 respectively, and both ends of the third horizontal bar 413 are fixedly connected to the other end of the first vertical bar 414.

[0058] A first notch 142 and a second notch 143 are provided on the limiting part 141 of a set of opposing connecting bent tubes 14. The vertical height of the first notch 142 is less than the vertical height of the second notch 143. The two ends of the first crossbar 411 are embedded in the first notch 142 and abut against the bottom of the second notch 143. The first notch 142 limits the first crossbar 411 on both the front and rear sides, and the two ends of the first crossbar 411 abut against the bottom of the second notch 143, so that the bent connecting tube also limits the left and right sides of the first crossbar 411, providing limiting force to the two ends of the first crossbar 411 from multiple directions, ensuring the installation stability of the first crossbar 411. The two ends of the second crossbar 412 pass through the second notch 143 and extend outward. The second crossbar 412 is above the first crossbar 411 and cooperates with the connecting bent tube 14 to provide support and pressure to the first crossbar 411 at the bottom and top, further ensuring the connection stability of the first crossbar 411. Furthermore, the second horizontal bar 412 passes through the second notch 143, and the connecting bent tube 14 provides lateral limiting force and bottom support force to the second horizontal bar 412 through the second notch 143. In conjunction with the top frame 42 above the second horizontal bar 412, it provides multi-directional limiting force to the second horizontal bar 412, thereby improving the installation stability of the second horizontal bar 412. A first bonding plate 144 extending outward is provided on one side of the second notch 143, and the first bonding plate 144 abuts against the outer surface of the first vertical bar 414. The two first bonding plates 144 are located outside the two first vertical bars 414, providing inward limiting force to the first vertical bars 414, thus improving the installation stability of the first vertical bars 414.

[0059] Furthermore, a second bonding plate 145 is fixed to the limiting part 141 of another set of opposing connecting bent tubes 14. The other end of the first vertical rod 414 is pressed onto the limiting part 141, and the end of the second bonding plate 145 abuts against the side of the first vertical rod 414. The third horizontal rod 413 is fitted between the second bonding plates 145. The end of the second bonding plate 145 provides a limiting force to the inner side of the first vertical rod 414, ensuring the accuracy of the installation position of the first vertical rod 414. And through the spaced second bonding plates 145, the third horizontal rod 413 is fitted and limited on both the front and rear sides, thereby improving the installation stability of the third horizontal rod 413. The first notch 142, the second notch 143, the first bonding plate 144, and the second bonding plate 145 provide limiting forces for the base frame 41 in all directions, ensuring the connection strength and connection stability between the base frame 41 and the connecting bent tube 14.

[0060] Please refer to Figure 10 As shown, this embodiment also provides a rotary tiller, including the above-mentioned track structure.

[0061] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A track structure, characterized in that, Includes chassis, drive mechanism, and tracks. The chassis is equipped with outward-extending track frames on both sides. The drive mechanism includes a drive assembly, a drive wheel, and a driven wheel. The drive wheel and the driven wheel are rotatably mounted on the front and rear sides of the track frame, respectively. The drive end of the drive assembly is drivenly connected to the drive wheel. The inner side of the track is provided with two sets of spaced-apart blocking protrusions. The blocking protrusions extend along the length of the track. The track is wrapped around the track frame, the drive wheel and the driven wheel. The track frame is provided with an inner blocking component and an outer blocking component. The inner blocking component is located between the two sets of blocking protrusions, and the outer blocking component is located outside the two sets of blocking protrusions.

2. The track structure according to claim 1, characterized in that: The driving wheel and the driven wheel are located between the two sets of blocking protrusions. The inner side of the track is provided with a drive groove, which meshes with the teeth of the driving wheel.

3. The track structure according to claim 1, characterized in that: The inner blocking assembly includes at least one blocking rod, which is fixed to the bottom of the track frame and extends along the length of the track. Both the front and rear ends of the blocking rod are provided with upwardly inclined clearance bending sections.

4. The track structure according to claim 1, characterized in that: The outer blocking assembly includes multiple sets of blocking wheels, which are rotatably mounted on both sides of the track frame, with the bottom of the blocking wheels extending to the side of the blocking protrusion group.

5. The track structure according to claim 1, characterized in that: The blocking protrusion group includes a plurality of blocking protrusions, which are spaced apart in the extension direction of the track, and the distance between adjacent blocking protrusions is greater than the width of the blocking protrusion. The two sides of the blocking protrusion are respectively inclined downward from the top inner side toward the inner blocking component and the outer blocking component, and the two sides of the blocking protrusion are respectively spaced apart from the inner blocking component and the outer blocking component.

6. The track structure according to claim 1, characterized in that: The track frame includes track crossbars and track vertical bars, with the track vertical bars vertically fixed to the top surface of the track crossbars; the outer blocking assembly is disposed on both sides of the track crossbars and track vertical bars, and the inner blocking assembly is disposed on the bottom surface of the track crossbars.

7. The track structure according to claim 1, characterized in that: The chassis includes connecting bent tubes and connecting crossbars. The horizontal portions of the connecting bent tubes are connected to the two ends of the track frame in pairs, and the two ends of the connecting crossbars are connected between the vertical portions of the opposite connecting bent tubes. The drive assembly is fixed to the front end of a set of connecting bending pipes.

8. The track structure according to claim 7, characterized in that: It also includes a mounting frame, which comprises a base frame and a top frame. The vertical part has a downwardly extending limiting part at its end. The base frame is embedded and fixed on the limiting part, and the top frame is fixed on the top surface of the base frame and connected to the external vehicle body structure.

9. The track structure according to claim 8, characterized in that: The base frame includes a first horizontal bar, a second horizontal bar, a third horizontal bar, and a first vertical bar. The second horizontal bar is fixed to both ends of the first horizontal bar and protrudes from the first horizontal bar. One end of the first vertical bar is fixedly connected to the two second horizontal bars respectively. The two ends of the third horizontal bar are fixedly connected to the other end of the first vertical bar. A first notch and a second notch are provided on the limiting part of a set of opposite connecting bending tubes. The vertical height of the first notch is less than the vertical height of the second notch. The two ends of the first crossbar are embedded in the first notch and abut against the bottom of the second notch. The two ends of the second crossbar pass through the second notch and extend outward. A first bonding plate extending outward is provided on one side of the second notch. The first bonding plate abuts against the outer side of the first vertical bar. Another set of opposite connecting bending tubes are fixed with oppositely arranged second bonding plates. The other end of the first vertical rod is pressed on the limiting part. The end of the second bonding plate is in abutting contact with the side of the first vertical rod. The third horizontal rod is fitted between the second bonding plates.

10. A rotary tiller, characterized in that, Includes the track structure described in any one of claims 1-9.

Images