A harvester header height maintaining structure
By designing a header height-maintaining structure with components such as hydraulic cylinders, dampers, and insert blocks on the harvester, the problems of header swaying and nodding during slope operation are solved, achieving header stability and vibration reduction, and preventing damage to the cutter blades.
Patent Information
- Application Number
- CN202522315515.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-10-31
AI Technical Summary
When operating on a slope or when one of the wheels encounters an obstacle, the cutting table will sway dramatically from side to side due to inertia, causing damage to the connecting parts. It will also cause violent nodding and swaying when encountering uneven ground, which may even cause the cutting blade to bite into the soil in severe cases.
A harvester header height maintaining structure is adopted, including components such as hydraulic cylinders, dampers, inserts, and slots. Through the limiting and supporting structure, the shaking and nodding of the header are reduced. Combined with the vibration reduction design of hydraulics and dampers, the impact energy is converted into gas potential energy storage to achieve the vibration reduction effect.
It effectively avoids large left-right swaying and downward nodding of the header, reduces damage to the connection parts, improves the stability and vibration reduction performance of the header, and prevents the cutter from biting into the soil.
Smart Images
Figure CN224936182U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of harvester technology, specifically to a harvester header height maintaining structure. Background Technology
[0002] Combine harvesters, as a type of modern agricultural machinery, are key equipment for achieving efficient crop harvesting and are widely used in harvesting grains such as wheat, rice, and corn, as well as certain cash crops. With the acceleration of agricultural modernization, combine harvesters have not only greatly improved agricultural production efficiency and reduced the labor intensity of farmers, but also reduced grain loss and ensured food security through precision harvesting technology. Their applications range from small-scale planting by individual farmers to large-scale operations on large farms, making them an indispensable part of modern agriculture.
[0003] However, when operating on a slope or when one of the wheels encounters an obstacle, the header will sway dramatically from side to side due to inertia, which can easily damage the connection parts of the header. Secondly, due to the large mass and long cantilever of the header, when encountering uneven ground, the entire header will nod and swing violently around the suspension point, which can even cause the cutter to "eat" the soil and damage the cutter. Utility Model Content
[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.
[0005] 1. Technical problems to be solved: To address the issues mentioned above, such as the cutting table swaying dramatically from side to side due to inertia when operating on slopes or encountering obstacles on one side, which can easily damage the connection parts of the cutting table, and the entire cutting table nodding and swinging violently around the suspension point when encountering uneven ground, which can even cause the cutting blade to "eat" the soil, this utility model is proposed.
[0006] Therefore, the purpose of this utility model is to provide a harvester header height maintaining structure, which has the following advantages: it can limit the header, avoid large left and right swaying of the header, strengthen the support of the header, reduce the header's violent downward nodding, and maintain the header height.
[0007] 2. Technical Solution: To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A harvester header height maintaining structure includes: The harvester main body includes a header connected to the harvester main body, a first hydraulic cylinder with one end hinged to the header and the other end hinged to the harvester main body, a fixing block fixed to the outer wall of the auger housing of the header, a slot at the bottom of the fixing block, a second hydraulic cylinder on the harvester main body, a first horizontal plate fixed to the top of the push rod of the second hydraulic cylinder, mounting slots symmetrically opened on the first horizontal plate, a damper hinged to the mounting slot, a second horizontal plate hinged to the other end of the damper, and an insert fixed to the top of the second horizontal plate and adapted to the slot.
[0008] As a preferred embodiment of the harvester header height maintaining structure described in this utility model, a spring is fixed to the top of the first horizontal plate, and the other end of the spring is fixed to the bottom of the second horizontal plate.
[0009] As a preferred embodiment of the harvester header height maintaining structure described in this utility model, it further includes an adjustment groove formed on the main body of the harvester, a motor fixed on the inner wall of the adjustment groove, a threaded rod rotatably mounted on the inner wall of the adjustment groove and coaxially connected to the output end of the motor, and a moving block inserted in the adjustment groove and meshing with the threaded rod, wherein the second hydraulic cylinder is fixed on the moving block.
[0010] As a preferred embodiment of the harvester header height maintaining structure described in this utility model, the top of the moving block is symmetrically fixed with a telescopic rod, and the top of the telescopic rod is fixed to the bottom of the first horizontal plate.
[0011] As a preferred embodiment of the harvester header height maintaining structure described in this utility model, a guide rod is fixed on the inner wall of the adjusting groove, and the moving block is sleeved on the guide rod.
[0012] As a preferred embodiment of the harvester header height maintaining structure described in this utility model, it further includes an oil pipe fixed to the first hydraulic cylinder, a flow pipe fixed to the oil pipe by a flange, an energy storage cylinder fixed to the other end of the flow pipe, a piston plate placed in the inner cavity of the energy storage cylinder, an air port fixed to one end of the oil pipe and communicating with the inner cavity of the oil pipe, and an oil port fixed to the other end of the oil pipe and communicating with the inner cavity of the oil pipe, wherein the other end of the flow pipe is fixed to the oil port.
[0013] As a preferred embodiment of the harvester header height maintenance structure described in this utility model, a rubber sleeve is fixedly wrapped around the outer wall of the insert block, and the rubber sleeve can be inserted into the slot.
[0014] 3. Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are as follows: I. The header height maintaining structure of this harvester limits the lateral movement of the header by inserting a block into the slot, so that the header will not swing left and right significantly, but will only swing within a small range inside the slot cavity, thus avoiding large left and right swings of the header. Second, the harvester's header height-maintaining structure, through the insertion of a block into a slot, provides an additional bottom support structure for the header. When the header nods downwards, it compresses the damper, which generates a vibration reduction effect. At the same time, some of the oil in the first hydraulic cylinder is squeezed into the flow pipe and enters the accumulator cylinder. Subsequently, the oil is released back into the first hydraulic cylinder, thus also playing a certain role in vibration reduction. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. 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 these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a harvester header height maintaining structure according to the present invention; Figure 2 This is a partial sectional view of a harvester header height maintaining structure according to the present invention; Figure 3 This utility model relates to a harvester header height maintaining structure. Figure 2 A magnified view of part A in the image; Figure 4 This utility model relates to a harvester header height maintaining structure. Figure 2 A magnified view of part B in the image; Figure 5 This is a schematic diagram of the energy storage cylinder body of a harvester header height maintaining structure according to the present invention.
[0016] The following are the labels in the diagram: 1. Harvester main body; 2. Cutting head; 3. First hydraulic cylinder; 31. Oil pipe; 32. Flow pipe; 33. Energy storage cylinder; 331. Piston plate; 332. Air port; 333. Oil port; 4. Fixing block; 41. Slot; 5. Second hydraulic cylinder; 51. First horizontal plate; 52. Mounting slot; 53. Damper; 531. Spring; 54. Second horizontal plate; 55. Insert block; 56. Telescopic rod; 6. Adjustment slot; 61. Motor; 62. Threaded rod; 63. Moving block; 64. Guide rod. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0018] Figures 1-5 The diagram shown is a structural schematic of one embodiment of a harvester header height maintaining structure according to this utility model. Please refer to [link / reference]. Figures 1-5 This utility model discloses a harvester header height maintaining structure, the main body of which includes: The harvester consists of a main body 1, a header 2 connected to the main body 1, a auger conveyor welded to the rear end of the header 2, the tail end of the auger conveyor connected to the main body 1 via a connecting rod, a first hydraulic cylinder 3 hinged at one end to the header 2 and the other end to the main body 1, which, when activated, can drive the header 2 to rise or fall, a fixing block 4 fixed to the outer wall of the auger housing of the header 2, a slot 41 at the bottom of the fixing block 4, a second hydraulic cylinder 5 mounted on the main body 1, a first horizontal plate 51 threaded to the top of the push rod of the second hydraulic cylinder 5, mounting slots 52 symmetrically opened on the first horizontal plate 51, and a pin connecting the mounting block 51. The damper 53 is hinged to the mounting groove 52, and the second horizontal plate 54 is hinged to the other end of the damper 53. The second horizontal plate 54 also has a mounting groove 52. The mounting groove 52 is for the convenient hinge of the damper 53. The plug 55 is welded and fixed to the top of the second horizontal plate 54 and is adapted to the slot 41. When the plug 55 is inserted into the slot 41, it will limit the lateral movement of the entire cutting table 2, so that the cutting table 2 will not swing left and right significantly, but will only swing within a small range inside the slot 41. With the second hydraulic cylinder 5 supporting the bottom of the cutting table 2, the cutting table 2 will not nod downward significantly. When the cutting table 2 nods downward, it will squeeze the damper 53, and the damper 53 will buffer and dampen the cutting table 2. Among them, the outer wall of the insert 54 is fixedly wrapped with a rubber sleeve, which can be inserted into the slot 41. When the insert 54 is inserted into the slot 41, it will squeeze the rubber sleeve to deform, so that the rubber sleeve can fill the gap between the insert 54 and the slot 41. Furthermore, in order to connect the first horizontal plate 51 and the second horizontal plate 54, specifically, a spring 531 is fixed to the top of the first horizontal plate 51, and the other end of the spring 531 is fixed to the bottom of the second horizontal plate 54. The first horizontal plate 51 and the second horizontal plate 54 are connected by a damper 53 and will swing. With the support of the spring 531, the first horizontal plate 51 and the second horizontal plate 54 can not only be connected as one, but the deformation capacity of the spring 531 itself can also provide a certain buffer. Meanwhile, to facilitate the adjustment of the position of the insert block 55, specifically, it also includes an adjustment groove 6 opened on the main body 1 of the harvester, a motor 61 fixed on the inner wall of the adjustment groove 6, a threaded rod 62 rotatably mounted on the inner wall of the adjustment groove 6 and coaxially connected to the output end of the motor 61, and a moving block 63 inserted in the adjustment groove 6 and meshing with the threaded rod 62. The second hydraulic cylinder 5 is fixed on the moving block 63. A telescopic rod 56 is symmetrically fixed to the top of the moving block 63. The top of the telescopic rod 56 is fixed to the bottom of the first horizontal plate 51. The telescopic rod 56 can limit the lifting and lowering process of the first horizontal plate 51 to prevent the first horizontal plate 51 from tilting. The inner wall of the adjustment groove 6 is fixed with Guide rod 64, movable block 63 is sleeved on guide rod 64. When movable block 63 moves, it will always be sleeved on guide rod 64 to prevent movable block 63 from tilting. In use, when the height of the cutting table 2 is adjusted by the first hydraulic cylinder 3, the position of fixed block 4 and slot 41 will also change accordingly. At this time, the motor 61 is turned on to drive the threaded rod 62 to rotate, which can drive movable block 63 and second hydraulic cylinder 5 to move, so that the insertion block 55 can move to the bottom of fixed block 4. Although the angle of slot 41 will also change, the second horizontal plate 54 is connected by damper 53, so the angle of the second horizontal plate 54 can also be changed, so that the insertion block 55 can easily change the angle to insert into slot 41. In actual use, the second hydraulic cylinder 5 drives the insert block 55 to rise, which can generally only contact a part of the slot 41 and cannot be directly inserted into the slot 41. At this time, with the movement of the moving block 63 and the angle change capability of the hinged damper 53, the insert block 55 can swing within a small range until the insert block 55 is completely inserted into the slot 41. Finally, to increase the vibration damping capability of the first hydraulic cylinder 3, specifically, it also includes an oil pipe 31 fixed to the first hydraulic cylinder 3, a flow pipe 32 fixed to the oil pipe 31 by a flange, an energy storage cylinder 33 fixed to the other end of the flow pipe 32 by a flange, a piston plate 331 placed in the inner cavity of the energy storage cylinder 33, and an air port 332 fixed to one end of the oil pipe 31 and connected to the inner cavity of the oil pipe 31. Nitrogen gas and oil fixed to the other end of the oil pipe 31 and connected to the inner cavity of the oil pipe 31 are introduced into the air port 332. The other end of the flow pipe 32 is fixed to the oil port 333 via a flange. When the cutting table 2 nods sharply and applies a downward force to the first hydraulic cylinder 3, some of the oil in the first hydraulic cylinder 3 is squeezed into the flow pipe 32 and enters the energy storage cylinder 33. Then, the piston plate 331 is squeezed to move and compress nitrogen, thereby converting the impact energy of the cutting table 2 into gas potential energy for storage. Subsequently, the nitrogen pushes back the piston plate 331, releasing the oil back into the first hydraulic cylinder 3, thus achieving a certain degree of vibration reduction.
[0019] Combination Figures 1-5 The specific implementation of this harvester header height maintaining structure is as follows: 1. First, turn on the motor 61 to drive the threaded rod 62 to rotate, which can drive the moving block 63 and the second hydraulic cylinder 5 to move, so that the insert block 55 can move to the bottom of the fixed block 4; 2. Then the second hydraulic cylinder 5 is activated, which drives the insert block 55 to rise and insert the insert block 55 into the slot 41, thereby limiting the lateral movement of the entire cutting table 2, so that the cutting table 2 will not swing left and right significantly, but will only swing within a small range inside the slot 41. 3. Finally, when the cutting platform 2 applies a downward force to the first hydraulic cylinder 3, some of the oil in the first hydraulic cylinder 3 is squeezed into the flow pipe 32 and enters the energy storage cylinder 33. Then, the piston plate 331 is squeezed to move and compress nitrogen, thereby converting the impact energy of the cutting platform 2 into gas potential energy for storage. Subsequently, the nitrogen pushes back the piston plate 331, releasing the oil back into the first hydraulic cylinder 3, thus achieving a certain degree of vibration reduction.
[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A harvester header height maintaining structure, characterized in that, include: The main body of the harvester (1), the header (2) connected to the main body of the harvester (1), the first hydraulic cylinder (3) with one end hinged to the header (2) and the other end hinged to the main body of the harvester (1), the fixing block (4) fixed on the outer wall of the auger housing of the header (2), the slot (41) opened at the bottom end of the fixing block (4), the second hydraulic cylinder (5) set on the main body of the harvester (1), the first horizontal plate (51) fixed at the top of the push rod of the second hydraulic cylinder (5), the mounting groove (52) symmetrically opened on the first horizontal plate (51), the damper (53) hinged on the mounting groove (52), the second horizontal plate (54) hinged to the other end of the damper (53), and the insert (55) fixed at the top of the second horizontal plate (54) and adapted to the slot (41).
2. The harvester header height maintaining structure according to claim 1, characterized in that, A spring (531) is fixed to the top of the first horizontal plate (51), and the other end of the spring (531) is fixed to the bottom of the second horizontal plate (54).
3. The harvester header height maintaining structure according to claim 1, characterized in that, It also includes an adjustment groove (6) opened on the main body (1) of the harvester, a motor (61) fixed on the inner wall of the adjustment groove (6), a threaded rod (62) rotatably installed on the inner wall of the adjustment groove (6) and coaxially connected to the output end of the motor (61), and a moving block (63) inserted in the adjustment groove (6) and meshing with the threaded rod (62). The second hydraulic cylinder (5) is fixed on the moving block (63).
4. The harvester header height maintaining structure according to claim 3, characterized in that, The top of the movable block (63) is symmetrically fixed with a telescopic rod (56), and the top of the telescopic rod (56) is fixed to the bottom of the first horizontal plate (51).
5. The harvester header height maintaining structure according to claim 3, characterized in that, A guide rod (64) is fixed on the inner wall of the adjustment groove (6), and the moving block (63) is sleeved on the guide rod (64).
6. The harvester header height maintaining structure according to claim 1, characterized in that, It also includes an oil pipe (31) fixed on the first hydraulic cylinder (3), a flow pipe (32) fixed on the oil pipe (31) by a flange, an energy storage cylinder (33) fixed at the other end of the flow pipe (32), a piston plate (331) placed in the inner cavity of the energy storage cylinder (33), an air port (332) fixed at one end of the oil pipe (31) and connected to the inner cavity of the oil pipe (31), and an oil port (333) fixed at the other end of the oil pipe (31) and connected to the inner cavity of the oil pipe (31). The other end of the flow pipe (32) is fixed on the oil port (333).
7. The harvester header height maintaining structure according to claim 1, characterized in that, The outer wall of the insert (55) is fixedly wrapped with a rubber sleeve, which can be inserted into the slot (41).