Machine head connecting device of stubble cleaning rake
By designing a connecting device for stubble rake head that can swing up and down and left and right, the problem of inconvenient connection between stubble rakes and tractors in the prior art is solved, reducing driving technical requirements and improving the convenience of connection.
Patent Information
- Application Number
- CN202421225907.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-31
AI Technical Summary
When connecting the existing stubble rake head with the tractor traction bracket, high-precision driving technology and frequent position adjustments are required, resulting in inconvenient connection.
A stubble-destroying rake head connection device is designed, including a first swing rod and a second swing rod. The first swing rod can swing up and down, the second swing rod can swing left and right, and has a telescopic function. By adjusting the swing angle and length of these swing rods, a flexible connection with the tractor traction bracket is achieved.
The requirements for farmers' tractor driving technology are reduced, the connection process between stubble rakes and tractors is simplified, and the convenience and flexibility of connection are improved.
Smart Images
Figure CN222639061U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of agricultural equipment, and in particular to a stubble harrow head connection device. Background Art
[0002] The stubble harrow is suitable for removing stubble before tilling the farmland, breaking up the surface compaction, chopping the straw with the roller and returning it to the field, breaking up the soil after tilling, leveling and other operations. It can also replace the plow for soil tillage operations on cultivated land. It has high operating efficiency, strong soil breaking ability, flat surface and loose soil after tilling, and has strong adaptability to heavy clay soil, wasteland and plots with many weeds.
[0003] At present, the commonly used stubble rake is generally used by connecting the frame head of the stubble rake to the traction bracket of the agricultural tractor, and then using the tractor to drive the stubble rake to move between the fields to achieve stubble treatment of the fields. However, the head of the existing stubble rake head used to connect with the tractor traction bracket is a traction rod that can only swing up and down. When connecting the tractor to the stubble rake, since the length of the traction rod cannot be adjusted, it is difficult to swing left and right. The farmer must make the traction bracket at the rear of the tractor face the traction rod of the stubble rake head, and the distance between the tractor and the stubble rake during connection must be such that the traction rod can just be inserted into the traction bracket of the tractor. This requires a high level of driving skills from the farmer. If the position of the tractor deviates slightly, the farmer needs to re-move and adjust it, which makes it inconvenient to connect the stubble rake to the tractor. Utility Model Content
[0004] The present application provides a stubble rake head connection device, which can reduce the requirements on the farmer's tractor driving skills when connecting the stubble rake to the tractor.
[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions:
[0006] A stubble rake head connection device, comprising a stubble rake body, a first swing lever is provided at the front end of a frame of the stubble rake body, one end of the first swing lever and the front end of the stubble rake body are hinged via a first pin shaft, the first pin shaft is horizontally arranged at the connection between the first swing lever and the front end of the stubble rake body, and the first swing lever can swing up and down around the axis of the first pin shaft;
[0007] A second swing lever is provided at one end of the first swing lever away from the stubble rake body, one end of the second swing lever is hinged to one end of the first swing lever away from the stubble rake body through a second pin shaft, the second pin shaft is arranged in a vertical direction at the connection between the second swing lever and the first swing lever, and the second swing lever can swing left and right in a horizontal direction around the axis of the second pin shaft;
[0008] The second swing arm is provided with a connecting hole for connecting with a traction bracket of a tractor at one end away from the first swing arm.
[0009] Furthermore, the second swing rod has a telescopic function.
[0010] Furthermore, the second swing rod includes a main rod and a sub-rod, one end of the main rod is hinged to the first swing rod through the second pin shaft, and the other end of the main rod is sleeved on the outside of the sub-rod and the two are slidably connected; the connecting hole is provided on the sub-rod, and the sub-rod can be fixed by a locking unit after extending out of the main rod to a specified length.
[0011] Furthermore, the locking unit includes a first through hole evenly arranged along the length direction of the main rod and a second through hole evenly arranged along the length direction of the sub-rod, and the spacing between the first through holes is equal to the spacing between the second through holes; after the sub-rod extends from the main rod to a suitable position, the sub-rod and the main rod can be detachably fixed together by bolts and nuts.
[0012] Furthermore, a first ear plate is fixedly provided on one opposite side of the main rod in the width direction, and a second ear plate is fixedly provided on one opposite side of the first swing rod in the width direction; the first ear plate and the second ear plate on the same side are detachably connected together via a limiting rod.
[0013] Furthermore, the first ear plate and the second ear plate are each provided with a first through hole, and the two ends of the limiting rod are respectively provided with a second through hole. After the first through hole on the first ear plate and the first through hole on the second ear plate on the same side are respectively aligned with the second through holes at the two ends of the limiting rod, they can be detachably fixed together by bolts and nuts.
[0014] Furthermore, there is an angle between one end of the sub-rod provided with the connecting hole and the sub-rod body, and the angle is an obtuse angle.
[0015] In summary, the present application includes at least one of the following beneficial technical effects:
[0016] The first swing rod connected to the front end of the frame of the stubble rake body of the present application can swing up and down, and the second swing rod connected to the end of the first swing rod away from the stubble rake body can swing left and right, so that when the farmer needs to connect the stubble rake body with the traction bracket at the rear of the tractor, he only needs to turn the traction bracket at the rear of the tractor to the vicinity of the second swing rod. The farmer can adjust the swing angle of the first swing rod and the second swing rod to move one end of the second swing rod with the connection hole to the traction frame at the rear of the tractor, and then connect the second swing rod and the traction frame of the tractor together. The stubble rake body of the present application is that when the tractor is connected, even if there is a certain deviation between the distance between the tractor and the stubble rake body, the farmer can connect the two by adjusting the first swing rod and the second swing rod, and does not need to have high technical requirements for farmers to drive tractors as in the prior art. Only when the farmer turns the traction bracket at the rear of the tractor over to face the traction rod of the stubble rake body, and after the tractor stops, the distance between the traction frame at the rear and the traction rod is appropriate can the connection work be carried out. It effectively solves the problem of inconvenience in connecting the stubble rake body and the tractor in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 It is a top view of the overall structure of the present application (the limit rod in the figure is in a disassembled state);
[0019] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;
[0020] Figure 3 It is a state diagram after the stubble harrow body and the tractor are connected together when there is a certain deviation between the parking position of the tractor and the stubble harrow body;
[0021] Figure 4 It is a schematic diagram showing that the first swing arm and the second swing arm become collinear after the tractor moves forward in a straight line for a certain distance;
[0022] Figure 5 is Figure 4 A schematic diagram of connecting the first ear plate and the second ear plate together through a limiting rod on the basis;
[0023] Figure 6 yes Figure 5 A side view of the overall structure;
[0024] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at point B in the middle.
[0025] Figure numerals: 1. stubble rake body; 2. first swing arm; 3. first pin shaft; 4. second swing arm; 41. main rod; 42. sub-rod; 43. locking unit; 431. first through hole; 432. second through hole; 5. second pin shaft; 6. connecting hole; 7. first ear plate; 8. second ear plate; 9. limiting rod; 10. first through hole; 11. second through hole; 12. tractor; 13. traction bracket. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.
[0027] like Figure 1-Figure 4 As shown, a stubble rake head connecting device disclosed in the present application comprises a stubble rake body 1, a first swing rod 2 is provided at the front end of the frame of the stubble rake body 1, one end of the first swing rod 2 and the front end of the stubble rake body 1 are hinged by a first pin shaft 3, the first pin shaft 3 is horizontally arranged at the connection between the first swing rod 2 and the front end of the stubble rake body 1, and the first swing rod 2 can swing up and down around the axis of the first pin shaft 3; a second swing rod 4 is provided at the end of the first swing rod 2 away from the stubble rake body 1, one end of the second swing rod 4 is hinged to the end of the first swing rod 2 away from the stubble rake body 1 by a second pin shaft 5, the second pin shaft 5 is arranged in a vertical direction at the connection between the second swing rod 4 and the first swing rod 2, and the second swing rod 4 can swing left and right in a horizontal direction around the axis of the second pin shaft 5; a connecting hole 6 for connecting with a traction bracket 13 of a tractor 12 is provided at the end of the second swing rod 4 away from the first swing rod 2.
[0028] In the above embodiments, the existing stubble rake (similar in structure to the stubble rake body 1 of the present application) is provided with foldable tires. Putting down the tires makes it convenient for the tractor 12 to transport the stubble rake on roads outside the field. When the tires are folded up, the rake wheels will contact the ground, making it convenient for the tractor 12 to perform stubble removal operations in the field through the stubble rake. Since the vertical position of the frame of the stubble rake changes when the tires are unfolded and folded up, in order to facilitate the connection between the stubble rake and the tractor 12 to adapt to this change, in the prior art, the traction rod used by the stubble rake to be connected to the tractor 12 is set to a structure that can swing up and down.
[0029] Generally, a stubble rake is heavy and cannot be pushed by manpower alone. Therefore, when connecting it to the tractor 12, the farmer needs to point the rear end of the tractor 12 toward the stubble rake, and then adjust the position of the tractor 12 during the reversing process. Since the towing rod can only swing in the vertical direction and cannot be adjusted left and right, if the tractor 12 is to be smoothly connected to the stubble rake, the tractor 12 needs to align its towing bracket 13 with the towing rod, and when it finally stops, the distance between the towing bracket 13 and the head of the stubble rake frame needs to adapt to the length of the towing rod. This places high technical requirements on the farmer's driving of the tractor 12 in actual use. Once the position is not correct, the farmer needs to repeatedly adjust the position of the tractor 12, which is inconvenient to connect the stubble rake and the tractor 12 together.
[0030] like Figure 3 and Figure 4 As shown, in the present application, the first swing arm 2 hinged by the first pin shaft 3 at the front end (also called the head end) of the frame of the stubble rake body 1 can swing up and down in the vertical direction, and the first swing arm 2 is hinged with the second swing arm 4 through the second pin shaft 5 at the end away from the stubble rake body 1, and the second swing arm 4 can swing left and right in the horizontal direction. In this way, even if there is a certain deviation between the parking position of the farmer driving the tractor 12 and the stubble rake body 1, as long as its traction bracket 13 falls at a position that can be reached by the second swing arm 4 and the first swing arm 2 by swinging, the farmer can adjust the first swing arm 2 and the second swing arm 4 after the tractor 12 is parked, so that the end of the second swing arm 4 with the connecting hole 6 is moved to the traction frame at the rear of the tractor 12, and then the second swing arm 4 and the traction frame of the tractor 12 can be connected together by connecting parts such as pins or bolts and nuts. Compared with the prior art, when the stubble rake body 1 of the present application is connected to the tractor 12, the position accuracy requirement for the inverted tractor 12 is not as high as that required in the prior art, which reduces the difficulty of connecting the stubble rake body 1 and the tractor 12.
[0031] Furthermore, the second swing rod 4 has a telescopic function.
[0032] In the above embodiments, if the length of the second swinging rod 4 of the present application is fixed, when the tractor 12 is reversed toward the stubble rake body 1, although there may be a certain deviation between the tractor 12 and the nose of the stubble rake body 1, it is still required that after the tractor 12 stops, the traction bracket 13 at the rear of the tractor 12 falls within the range that can be reached during the swinging process, and this area is still limited. The second swinging rod 4 of the present application has a retractable function, so that the second swinging rod 4 can be adjusted along its length direction while swinging in the horizontal direction, effectively increasing the area that the second swinging rod 4 can reach. In this way, when the tractor 12 is reversed, as long as the traction bracket 13 at the rear of the tractor 12 falls within the fan-shaped area that the second swinging rod 4 can reach, the convenience of connecting the tractor 12 with the stubble rake body 1 is further improved compared with the second swinging rod 4 with a fixed length.
[0033] Furthermore, if Figure 1 and Figure 2 As shown, the second swing rod 4 includes a main rod 41 and a sub-rod 42. One end of the main rod 41 is hinged to the first swing rod 2 through a second pin shaft 5, and the other end of the main rod 41 is sleeved on the outside of the sub-rod 42 and the two are slidably connected; a connecting hole 6 is provided on the sub-rod 42, and the sub-rod 42 can be fixed by a locking unit 43 after extending out of the main rod 41 by a specified length.
[0034] In the above embodiment, during the swinging process of the second swing arm 4, if there is still a certain distance between the connecting hole 6 on the sub-rod 42 and the traction bracket 13 at the rear of the tractor 12, the farmer can pull the sub-rod 42 outward along the length direction of the main rod 41 to make the sub-rod 42 extend out of the main rod 41, thereby increasing the overall length of the second swing arm 4. When the extended length of the sub-rod 42 can reach the traction bracket 13 at the rear of the tractor 12, the farmer can fix the positions of the main rod 41 and the sub-rod 42 through the locking unit 43. This second swing arm 4 has a simple structure and is easy to manufacture and use.
[0035] Furthermore, if Figure 1 and Figure 2 As shown, the locking unit 43 includes a first through hole 431 evenly arranged along the length direction of the main rod 41 and a second through hole 432 evenly arranged along the length direction of the sub-rod 42, and the spacing between the first through holes 431 is equal to the spacing between the second through holes 432; after the sub-rod 42 extends from the main rod 41 to a suitable position, the sub-rod 42 and the main rod 41 can be detachably fixed together by bolts and nuts.
[0036] In the above embodiments, when the sub-rod 42 of the present application is telescopically adjusted along the length direction of the main rod 41, when it is adjusted to a suitable position, the first through hole 431 and the second through hole 432 of the overlapping part of the sub-rod 42 and the main rod 41 are in a through state, at this time, the farmer can insert the bolt into the first through hole 431 and the second through hole 432, and then screw the nut under the bolt, so as to fix the sub-rod 42 and the main rod 41 together. In actual use, in order to improve the connection firmness of the main rod 41 and the sub-rod 42, several more bolts and nuts can be screwed at different positions. When the relative position of the main rod 41 and the sub-rod 42 needs to be readjusted, the bolts and nuts can be removed, which is simple and convenient to operate.
[0037] Furthermore, if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a first ear plate 7 is fixedly provided on one opposite side of the main rod 41 in the width direction, and a second ear plate 8 is fixedly provided on one opposite side of the first swing rod 2 in the width direction; the first ear plate 7 and the second ear plate 8 on the same side are detachably connected together by a limiting rod 9.
[0038] In the above embodiment, since the connection point between the main rod 41 and the first swing rod 2 is an active point, and the connection point between the sub-rod 42 and the traction bracket 13 at the rear of the tractor 12 is also an active point, when the tractor 12 turns with the stubble rake body 1, the second swing rod 4 will delay the turning action of the tractor 12, which will affect the farmer's judgment of the position of the stubble rake body 1; in addition, due to the large number of active points, it is not conducive for the farmer to control the moving trajectory of the stubble rake body 1 through the tractor 12 when reversing. After the stubble rake body 1 of the present application is connected with the tractor 12, the farmer can first drive the tractor 12 forward for a certain distance, so that the second swing rod 4 is in line with the first swing rod 2, and the distance between the two first ear plates 7 and the two second ear plates 8 is equal. The farmer can connect the first ear plates 7 and the second ear plates 8 on both sides through the two limit rods 9, so that the second swing rod 4 and the first swing rod 2 are fixed together, which can effectively solve the problem that the tractor 12 has too many active points and is inconvenient to move during the movement of the stubble rake body 1.
[0039] Furthermore, if Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the first ear plate 7 and the second ear plate 8 are both provided with a first through hole 10, and the two ends of the limiting rod 9 are respectively provided with a second through hole 11. After the first through hole 10 on the first ear plate 7 and the first through hole 10 on the second ear plate 8 on the same side are aligned with the second through holes 11 at both ends of the limiting rod 9, they can be detachably fixed together by bolts and nuts.
[0040] In the above embodiment, when the axes of the second swinging rod 4 and the first swinging rod 2 are collinear, the farmer can first align the second through hole 11 at one end of one of the limiting rods 9 with the first through hole 10 on one of the first ear plates 7, and then connect them by bolts and nuts, and then align the second through hole 11 at the other end of the limiting rod 9 with the first through hole 10 on the second ear plate 8 on the same side, and continue to connect this end of the limiting rod 9 with the corresponding second ear plate 8 by bolts and nuts, and then tighten the nuts and bolts uniformly after the connection, and then connect the first ear plate 7 and the second ear plate 8 on the other side in the same way, so that the second swinging rod 4 and the first swinging rod 2 can be fixed together as a whole. The present application is provided with a limiting rod 9 on both sides of the first swinging rod 2 and the second swinging rod 4, so that the strength of the connection between the two can be effectively improved when in use. Moreover, the limiting rod 9 of the present application is fixed to the first ear plate 7 and the second ear plate 8 by bolts and nuts, so that when the second swinging rod 4 needs to be adjusted, the limiting rod 9 can be quickly removed to release the restriction on the second swinging rod 4.
[0041] Furthermore, if Figure 6 and Figure 7 As shown, there is an angle between one end of the connecting hole 6 provided on the sub-rod 42 and the rod body of the sub-rod 42, and the angle is an obtuse angle.
[0042] In the above embodiment, since the overall horizontal height of the frame of the stubble rake body 1 is usually slightly lower than the height of the traction bracket 13 at the rear of the tractor 12, if the sub-bar 42 is set as a straight line, when connected to the traction bracket 13 at the rear of the tractor 12, the end of the connection hole 6 of the sub-bar 42 will be in an inclined state in the traction bracket 13 at the rear of the tractor 12, which is not conducive to inserting the pin from the traction bracket 13 and smoothly passing through the connection hole 6 on the sub-bar 42. In the present application, the end of the sub-bar 42 with the connection hole 6 and the rod body of the sub-bar 42 are arranged in the above manner, so that when the end of the connection hole 6 of the sub-bar 42 is inserted into the traction bracket 13 at the rear of the tractor 12, the inclination angle of the end of the connection hole 6 of the sub-bar 42 in the traction bracket 13 at the rear of the tractor 12 will not be too large, so that it is convenient for farmers to insert the pin in the vertical direction and quickly connect the sub-bar 42 and the traction bracket 13 at the rear of the tractor 12 (the angle between the end of the sub-bar 42 with the connection hole 6 and its rod body is the angle α in the figure).
[0043] The implementation principle of this embodiment is as follows: when the stubble rake body 1 needs to be connected to the tractor 12, the farmer can first drive the tractor 12 to the front side of the stubble rake body 1, and then reverse in the direction of the stubble rake body 1. When the traction bracket 13 at the rear of the tractor 12 reaches the area around the second swing rod 4, the tractor can stop without facing the second swing rod 4. Then the farmer adjusts the first swing rod 2 and the second swing rod 4 so that the axis direction of the second swing rod 4 faces the traction bracket 13 at the rear of the tractor 12, and then the bolts and nuts used to fasten the sub-rod 42 and the main rod 41 in the second swing rod 4 can be loosened, and the extension length of the sub-rod 42 can be adjusted along the axis direction of the main rod 41. When the extension length of the sub-rod 42 satisfies that the end with the connecting hole 6 can be smoothly moved into the traction bracket 13 at the rear of the tractor 12, the sub-rod 42 and the traction bracket 13 of the tractor 12 can be fixed together using a special latch. Compared with the prior art, when the stubble rake body 1 of the present application is connected to the tractor 12, the driving technology of the tractor 12 and the accuracy of the parking position are not high. When the tractor 12 is reversed toward the stubble rake body, even if there is a deviation between the parking position and the head of the stubble rake body 1, the farmer can complete the connection between the stubble rake body 1 and the tractor 12 by adjusting the first swing arm 2 and the second swing arm 4, without frequently moving the tractor 12, thereby improving the convenience of connecting the stubble rake head and the tractor 12.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A stubble rake head connection device, comprising a stubble rake body (1), characterized in that: A first swing arm (2) is provided at the front end of the frame of the stubble rake body (1); one end of the first swing arm (2) and the front end of the stubble rake body (1) are hingedly connected via a first pin shaft (3); the first pin shaft (3) is horizontally arranged at the connection between the first swing arm (2) and the front end of the stubble rake body (1); the first swing arm (2) can swing up and down around the axis of the first pin shaft (3); A second swing rod (4) is provided at one end of the first swing rod (2) away from the stubble rake body (1); one end of the second swing rod (4) is hinged to one end of the first swing rod (2) away from the stubble rake body (1) via a second pin shaft (5); the second pin shaft (5) is arranged in the vertical direction at the connection between the second swing rod (4) and the first swing rod (2); the second swing rod (4) can swing left and right in the horizontal direction around the axis of the second pin shaft (5); The second swing arm (4) is provided with a connection hole (6) at one end away from the first swing arm (2) for connecting with a traction bracket (13) of a tractor (12).
2. The stubble rake head connection device according to claim 1, characterized in that: The second swing rod (4) has a telescopic function.
3. The stubble rake head connection device according to claim 2, characterized in that: The second swing rod (4) comprises a main rod (41) and a sub-rod (42); one end of the main rod (41) is hinged to the first swing rod (2) via the second pin shaft (5); the other end of the main rod (41) is sleeved on the outside of the sub-rod (42) and the two are slidably connected; the connecting hole (6) is provided on the sub-rod (42); and the sub-rod (42) can be fixed by a locking unit (43) after extending out of the main rod (41) to a specified length.
4. The stubble rake head connection device according to claim 3, characterized in that: The locking unit (43) comprises a first through hole (431) uniformly arranged along the length direction of the main rod (41) and a second through hole (432) uniformly arranged along the length direction of the sub-rod (42), and the spacing between the first through holes (431) is equal to the spacing between the second through holes (432); after the sub-rod (42) extends from the main rod (41) to a suitable position, the sub-rod (42) and the main rod (41) can be detachably fixed together by bolts and nuts.
5. The stubble rake head connection device according to claim 3, characterized in that: A first ear plate (7) is fixedly provided on one opposite side of the main rod (41) in the width direction, and a second ear plate (8) is fixedly provided on one opposite side of the first swing rod (2) in the width direction; the first ear plate (7) and the second ear plate (8) on the same side are detachably connected together via a limiting rod (9).
6. The stubble harrow head connection device according to claim 5, characterized in that: The first ear plate (7) and the second ear plate (8) are both provided with a first through hole (10) extending therethrough, and the two ends of the limiting rod (9) are respectively provided with a second through hole (11). After the first through hole (10) on the first ear plate (7) and the first through hole (10) on the second ear plate (8) on the same side are respectively aligned with the second through holes (11) at the two ends of the limiting rod (9), they can be detachably fixed together by bolts and nuts.
7. The stubble rake head connection device according to any one of claims 3 to 6, characterized in that: An angle is formed between one end of the sub-rod (42) provided with the connecting hole (6) and the rod body of the sub-rod (42), and the angle is an obtuse angle.