A combine harvester sawyer mounting structure and the combine harvester

Abstract

This utility model relates to the field of agricultural machinery technology, and more particularly to a combine harvester's shearing device mounting structure and the harvester itself. The structure includes a frame, and a front crankshaft assembly and a rear crankshaft assembly rotatably mounted on the frame. One end of the rear crankshaft assembly has a crankshaft drive pulley, and an intermediate pulley is rotatably mounted on the outer side of the frame. The intermediate pulley and the crankshaft drive pulley are located at the same end of the rear crankshaft assembly. The intermediate pulley is connected to the drive shaft via a power input belt, and the intermediate pulley is connected to the crankshaft drive pulley via a transmission belt. The power input belt is connected to a first tensioning mechanism for tensioning the power input belt, and the transmission belt is connected to a second tensioning mechanism for tensioning the transmission belt. This utility model achieves tensioning of the power input belt and the transmission belt through the first and second tensioning mechanisms, ensuring accurate power transmission and avoiding belt slippage and tooth skipping.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a combine harvester straw-moving device mounting structure and a combine harvester. Background Technology

[0002] In harvesting machinery such as combine harvesters and reamers, the straw pusher, located after the threshing unit, is used to throw straw containing some grains after threshing to the cleaning system for further separation of grains and straw. A straw pusher typically includes a drive shaft, crankshaft, pulleys, belt, and several throwing blades or toothed rods. During operation, engine power is transmitted via the main drive belt to the input pulley of the straw pusher, which then drives the crankshaft to rotate, thereby driving the throwing blades to produce a periodic throwing motion. Because the crankshaft must withstand periodic impact loads, belt drives are prone to slippage, tooth skipping, abnormal wear, and even problems such as crankshaft loss, straw blockage, and increased grain loss. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a combine harvester straw-moving device mounting structure and a combine harvester, so as to solve the above-mentioned problems existing in the prior art.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A combine harvester straw-moving device mounting structure includes a frame, and a front crankshaft assembly and a rear crankshaft assembly rotatably mounted on the frame; one end of the rear crankshaft assembly is provided with a crankshaft drive pulley, and an intermediate pulley is rotatably provided on the outer side of the frame. The intermediate pulley and the crankshaft drive pulley are located at the same end of the rear crankshaft assembly. The intermediate pulley is connected to the drive shaft via a power input belt, and the intermediate pulley is connected to the crankshaft drive pulley via a transmission belt. The power input belt is connected to a first tensioning mechanism for tensioning the power input belt, and the transmission belt is connected to a second tensioning mechanism for tensioning the transmission belt.

[0005] The beneficial effects of this utility model are: the tensioning of the power input belt and the transmission belt is achieved through the first tensioning mechanism and the second tensioning mechanism, ensuring accurate power transmission and avoiding problems such as crankshaft loss, straw blockage, and increased grain loss rate caused by belt slippage and tooth skipping.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the first tensioning mechanism includes a tensioning arm, the middle part of which is rotatably connected to the frame. One end of the tensioning arm is rotatably connected to a first tensioning wheel, which abuts against the outer wall of the power input belt. The other end of the tensioning arm is connected to the frame through a first tension spring mechanism, so that the first tensioning wheel applies tension to the outer wall of the power input belt.

[0008] The beneficial effect of adopting the above-mentioned further solution is that the tensioning arm is driven to rotate around its middle part by the first tension spring mechanism, which ensures that sufficient tension can be maintained on the power input belt, thereby ensuring the stability of power transmission.

[0009] Furthermore, the first tension spring mechanism includes a first pull rod and a first stop. The first stop is fixed on the frame. One end of the first pull rod is rotatably connected to one end of the tensioning arm. The other end of the first pull rod slides through the first stop and is fixedly connected to a first limiting member. A first compression spring is sleeved on the first pull rod. The two ends of the first compression spring abut against the first limiting member and the first stop, respectively.

[0010] The beneficial effect of adopting the above-mentioned further solution is that the first compression spring applies a force to the first limiting clamp, so that the first pull rod maintains sufficient tension on the tensioning arm, thereby ensuring that the first tensioning wheel can maintain sufficient tension on the power input belt.

[0011] Furthermore, the second tensioning mechanism includes a second tensioning wheel and a third tensioning wheel. The second tensioning wheel is rotatably connected to the frame, and the third tensioning wheel is rotatably connected to one end of the rotating arm. The other end of the rotating arm is rotatably connected to the frame. The end of the rotating arm connected to the third tensioning wheel is connected to the frame through a second tension spring mechanism. The transmission belt is wound sequentially around the intermediate pulley, the second tensioning wheel, the third tensioning wheel, and the crankshaft drive pulley.

[0012] The beneficial effects of adopting the above-mentioned further solution are: through the cooperation of the second tensioning pulley and the third tensioning pulley, the transmission belt forms a cross structure, and at the same time, the second tension spring mechanism applies tension to the transmission belt, further preventing the transmission belt from jumping and achieving stable tension of the transmission belt.

[0013] Furthermore, the tension spring mechanism includes a second pull rod and a second stop. The second stop is fixed on the frame. One end of the second pull rod is rotatably connected to one end of the rotating arm. The other end of the second pull rod slides through the second stop and is fixedly connected to a second limiting member. A second compression spring is sleeved on the second pull rod. The two ends of the second compression spring are respectively the second limiting member and the second stop.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the second compression spring applies a force to the second limiting clamp, so that the second pull rod maintains sufficient tension on the rotating arm, thereby ensuring that the third tensioning pulley can maintain sufficient tension on the power input belt.

[0015] Furthermore, multiple keyboxes are arranged side by side and are all rotatably connected to the front crankshaft assembly and the rear crankshaft assembly; both the front crankshaft assembly and the rear crankshaft assembly include a five-journey crankshaft, the two ends of which are rotatably connected to the frame respectively, and a flange bearing is fixedly sleeved on each journal of the five-journey crankshaft, and a bearing seat is fixedly sleeved on the flange bearing, and the bearing seat is fixedly connected to the keybox.

[0016] The beneficial effect of adopting the above-mentioned further solution is that by setting a five-axis crankshaft, the five-key sequential setting can be realized, which can improve the working efficiency of the harvester to a certain extent.

[0017] Furthermore, the key box is fixedly connected to the bearing housing by bolts and nuts.

[0018] The advantage of adopting the above-mentioned further solutions is that they facilitate installation and disassembly.

[0019] Furthermore, the frame includes two frame upper crossbeams spaced apart and a left side wall inner stop and a right side wall inner stop that are parallel and spaced apart; the front crankshaft assembly and the rear crankshaft assembly are spaced apart between the left side wall inner stop and the right side wall inner stop, and the two ends of the front crankshaft assembly and the rear crankshaft assembly are respectively rotatably connected to the left side wall inner stop and the right side wall inner stop, respectively; the left side wall inner stop and the right side wall inner stop are respectively fixed on the two frame upper crossbeams.

[0020] The advantage of adopting the above-mentioned further solution is that it facilitates fixed connection with the harvester frame.

[0021] Furthermore, both ends of the front crankshaft assembly and the rear crankshaft assembly are connected to the frame via spherical roller bearings.

[0022] The beneficial effect of adopting the above-mentioned further solutions is to ensure the smooth rotation of the front crankshaft assembly and the rear crankshaft assembly.

[0023] This utility model also provides a harvester to solve the above problems, including the above-mentioned combine harvester straw-moving device mounting structure.

[0024] The beneficial effects of adopting the above scheme are: the tensioning of the power input belt and the transmission belt is achieved through the first tensioning mechanism and the second tensioning mechanism, ensuring accurate power transmission and avoiding problems such as crankshaft loss, straw blockage, and increased grain loss rate caused by belt slippage and tooth skipping. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the installation of the key housing and the rear crankshaft assembly of this utility model; Figure 3 This is a schematic diagram of the front crankshaft assembly and the rear crankshaft assembly in this utility model; Figure 4 This is a side view of the front crankshaft assembly and the rear crankshaft assembly in this utility model; Figure 5 This is a cross-sectional view showing the installation of the flange bearing and bearing housing in this utility model. The attached diagram lists the components represented by each number as follows: 1. Left side inner wall stop; 2. Right side inner wall stop; 3. Front crankshaft assembly; 4. Rear crankshaft assembly; 5. Keybox; 6. Crankshaft drive pulley; 7. Intermediate pulley; 8. Drive shaft; 9. Power input belt; 10. Transmission belt; 11. Tensioning arm; 12. First tension pulley; 13. First tie rod; 14. First stop seat; 15. First limit element; 16. First compression spring; 17. Second tension pulley; 18. Third tension pulley; 19. Rotary arm; 20. Second tie rod; 21. Second stop seat; 22. Second limit element; 23. Second compression spring; 24. Five-axis crankshaft; 25. Flange bearing; 26. Bearing housing; 27. Bolt; 28. Nut; 29. ​​Upper crossbeam of the frame; 30. Outer spherical ball bearing. Detailed Implementation

[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0027] Example 1 like Figures 1 to 5 As shown, this embodiment discloses a combine harvester chaff reader mounting structure, including a frame, and a front crankshaft assembly 3 and a rear crankshaft assembly 4 rotatably mounted on the frame. The frame includes two frame upper crossbeams 29 spaced apart, and a left side wall inner stop 1 and a right side wall inner stop 2 arranged parallel and spaced apart. The frame upper crossbeams 29 are fixedly mounted on the harvester frame. The left side wall inner stop 1 and the right side wall inner stop 2 are respectively located on the sides of the two frame upper crossbeams 29 facing each other. The tops of the left side wall inner stop 1 and the right side wall inner stop 2 are respectively fixedly connected to the two frame upper crossbeams 29.

[0028] A front crankshaft assembly 3 and a rear crankshaft assembly 4 are spaced apart between the left inner wall section 1 and the right inner wall section 2. The two ends of the front crankshaft assembly 3 and the rear crankshaft assembly 4 are respectively rotatably connected to the left inner wall section 1 and the right inner wall section 2. Specifically, the two ends of the front crankshaft assembly 3 and the rear crankshaft assembly 4 are respectively connected to the left inner wall section 1 and the right inner wall section 2 through an outer spherical ball bearing 30 to ensure the smooth rotation of the front crankshaft assembly 3 and the rear crankshaft assembly 4.

[0029] Multiple key boxes 5 are arranged side by side between the inner side 1 of the left wall and the inner side 2 of the right wall, and the multiple key boxes 5 are arranged sequentially along the direction from the inner side 1 of the left wall to the inner side 2 of the right wall, and the multiple key boxes 5 are rotatably connected to the front crankshaft assembly 3 and the rear crankshaft assembly 4.

[0030] The rear crankshaft assembly 4 has a crankshaft drive pulley 6 at one end, and an intermediate pulley 7 is rotatably provided on the outer side of the inner side of the right side wall 2. The intermediate pulley 7 and the crankshaft drive pulley 6 are located at the same end of the rear crankshaft assembly 4. The intermediate pulley 7 is connected to the drive shaft 8 via a power input belt 9, and the intermediate pulley 7 is connected to the crankshaft drive pulley 6 via a transmission belt 10. The power input belt 9 is connected to a first tensioning mechanism for tensioning the power input belt 9, and the transmission belt 10 is connected to a second tensioning mechanism for tensioning the transmission belt 10.

[0031] In this embodiment, the first tensioning mechanism includes a tensioning arm 11. The middle portion of the tensioning arm 11 is rotatably connected to the outer side of the inner side panel 2 of the right side wall. One end of the tensioning arm 11 is rotatably connected to a first tensioning wheel 12, which abuts against the outer wall of the power input belt 9. The other end of the tensioning arm 11 is connected to the outer side of the inner side panel 2 of the right side wall via a first tension spring mechanism, so that the first tensioning wheel 12 applies tension to the outer wall of the power input belt 9. By driving the tensioning arm 11 to rotate around its middle portion through the first tension spring mechanism, sufficient tension can be maintained on the power input belt 9, thereby ensuring the stability of power transmission.

[0032] Specifically, the first tension spring mechanism includes a first pull rod 13 and a first stop 14. The first stop 14 is fixed to the outer side of the inner stop 2 on the right side wall. One end of the first pull rod 13 is rotatably connected to one end of the tensioning arm 11. The other end of the first pull rod 13 slides through the first stop 14 and is fixedly connected to a first limiting member 15. A first compression spring 16 is sleeved on the first pull rod 13, and both ends of the first compression spring 16 abut against the first limiting member 15 and the first stop 14, respectively. The first compression spring 16 applies a force to the first limiting clamp, so that the first pull rod 13 maintains sufficient tension on the tensioning arm 11, thereby ensuring that the first tensioning wheel 12 can maintain sufficient tension on the power input belt 9. The first limiting member 15 is a limiting retaining ring sleeved on the first pull rod 13. The first pull rod 13 has external threads, and a limiting nut is threadedly connected to the side of the first pull rod 13 away from the first compression spring 16.

[0033] Since one end of the first pull rod 13 moves in an arc shape as the tension arm 11 rotates, in order to avoid the first stop 14 interfering with the arc shape movement of one end of the first pull rod 13, the first stop 14 is provided with a first waist-shaped hole, through which the first pull rod 13 passes.

[0034] In this embodiment, the second tensioning mechanism includes a second tensioning wheel 17 and a third tensioning wheel 18. The second tensioning wheel 17 is rotatably connected to the outer side of the right side wall inner stop 2. The third tensioning wheel 18 is rotatably connected to one end of a rotating arm 19, and the other end of the rotating arm 19 is rotatably connected to the outer wall of the right side wall inner stop 2. One end of the rotating arm 19 connected to the third tensioning wheel 18 is connected to the outer side of the right side wall inner stop 2 via a second tension spring mechanism. The transmission belt 10 is sequentially wound around the intermediate pulley 7, the second tensioning wheel 17, the third tensioning wheel 18, and the crankshaft drive pulley 6. Through the cooperation of the second tensioning wheel 17 and the third tensioning wheel 18, the transmission belt 10 forms a cross structure. At the same time, the second tension spring mechanism applies tension to the transmission belt 10, further preventing the transmission belt 10 from jumping and achieving stable tension of the transmission belt 10.

[0035] Specifically, the tension spring mechanism includes a second pull rod 20 and a second stop 21. The second stop 21 is fixed to the outer side of the inner stop 2 on the right side wall. One end of the second pull rod 20 is rotatably connected to one end of the rotating arm 19. The other end of the second pull rod 20 slides through the second stop 21 and is fixedly connected to a second limiting member 22. A second compression spring 23 is sleeved on the second pull rod 20, with the second limiting member 22 and the second stop 21 at its two ends respectively. The second compression spring 23 applies a force to the second limiting clamp, ensuring that the second pull rod 20 maintains sufficient tension on the rotating arm 19, thereby ensuring that the third tensioning wheel 18 maintains sufficient tension on the power input belt 9. The second limiting member 22 is a limiting retaining ring sleeved on the second pull rod 20. The second pull rod 20 has external threads, and a limiting nut is threadedly connected to the side of the second pull rod 20 away from the second compression spring 23.

[0036] Since one end of the second pull rod 20 moves in an arc shape as the rotating arm 19 rotates, in order to avoid the second stop 21 interfering with the arc shape movement of one end of the second pull rod 20, the second stop 21 is provided with a second waist-shaped hole, through which the second pull rod 20 passes.

[0037] In this embodiment, in order to ensure the stability and firmness of the installation of the crankshaft drive pulley 6, intermediate pulley 7, and second tension pulley 17, multiple brackets are fixedly installed on the crossbeam 29 of the frame. The brackets extend downward, and the crankshaft drive pulley 6, intermediate pulley 7, and second tension pulley 17 are rotatably installed on the corresponding brackets.

[0038] like Figures 2 to 5 As shown, both the front crankshaft assembly 3 and the rear crankshaft assembly 4 include a five-journey crankshaft 24. The two ends of the five-journey crankshaft 24 are rotatably connected to the inner side wall and the inner right side wall 2, respectively. A flange bearing 25 is fixedly fitted onto each journal of the five-journey crankshaft 24, and a bearing seat 26 is fixedly fitted onto the flange bearing 25. The bearing seat 26 is fixedly connected to the key housing 5. By setting the five-journey crankshaft 24, a five-key sequential setting is achieved, which improves the operating efficiency of the harvester to a certain extent. In this embodiment, the five-journey crankshaft 24 is provided with five journals, as shown in the attached figure. Figure 3 As shown, the two ends of the five-jersey crankshaft 24 are on the same axis. The five journals refer to the five axes in the middle that are parallel to the axes at both ends and are spaced apart. See the five segments that turn outwards in the middle of the five-jersey crankshaft 24 in the attached figure.

[0039] The key box 5 is fixedly connected to the bearing seat 26 by bolts 27 and nuts 28, which facilitates installation and disassembly.

[0040] Example 2 This embodiment discloses a harvester, including the combine harvester sawyer mounting structure described above.

[0041] This utility model achieves tensioning of the power input belt 9 and the transmission belt 10 through the first tensioning mechanism and the second tensioning mechanism, ensuring accurate power transmission and avoiding problems such as crankshaft loss, straw blockage, and increased grain loss rate caused by belt slippage and tooth skipping.

[0042] In the description of this utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combine harvester straw-moving device mounting structure, characterized in that, The assembly includes a frame, and a front crankshaft assembly (3) and a rear crankshaft assembly (4) rotatably mounted on the frame. One end of the rear crankshaft assembly (4) is provided with a crankshaft drive pulley (6), and an intermediate pulley (7) is rotatably mounted on the outer side of the frame. The intermediate pulley (7) and the crankshaft drive pulley (6) are located at the same end of the rear crankshaft assembly (4). The intermediate pulley (7) is connected to the drive shaft (8) via a power input belt (9). The intermediate pulley (7) and the crankshaft drive pulley (6) are connected to the transmission belt (10). The power input belt (9) is connected to a first tensioning mechanism for tensioning the power input belt (9), and the transmission belt (10) is connected to a second tensioning mechanism for tensioning the transmission belt (10).

2. The combine harvester sawyer mounting structure according to claim 1, characterized in that, The first tensioning mechanism includes a tensioning arm (11), the middle part of which is rotatably connected to the frame. One end of the tensioning arm (11) is rotatably connected to a first tensioning wheel (12), which abuts against the outer wall of the power input belt (9). The other end of the tensioning arm (11) is connected to the frame through a first tension spring mechanism, so that the first tensioning wheel (12) applies tension force to the outer wall of the power input belt (9).

3. The combine harvester sawyer mounting structure according to claim 2, characterized in that, The first tension spring mechanism includes a first pull rod (13) and a first stop (14). The first stop (14) is fixed on the frame. One end of the first pull rod (13) is rotatably connected to one end of the tension arm (11). The other end of the first pull rod (13) slides through the first stop (14) and is fixedly connected to a first limiting member (15). A first compression spring (16) is sleeved on the first pull rod (13). The two ends of the first compression spring (16) abut against the first limiting member (15) and the first stop (14) respectively.

4. The combine harvester sawyer mounting structure according to claim 1, characterized in that, The second tensioning mechanism includes a second tensioning wheel (17) and a third tensioning wheel (18). The second tensioning wheel (17) is rotatably connected to the frame. The third tensioning wheel (18) is rotatably connected to one end of a rotating arm (19). The other end of the rotating arm (19) is rotatably connected to the frame. The end of the rotating arm (19) connected to the third tensioning wheel (18) is connected to the frame through a second tension spring mechanism. The transmission belt (10) is wound sequentially around the intermediate pulley (7), the second tensioning wheel (17), the third tensioning wheel (18), and the crankshaft drive pulley (6).

5. The combine harvester sawyer mounting structure according to claim 4, characterized in that, The tension spring mechanism includes a second pull rod (20) and a second stop (21). The second stop (21) is fixed on the frame. One end of the second pull rod (20) is rotatably connected to one end of the rotating arm (19). The other end of the second pull rod (20) slides through the second stop (21) and is fixedly connected to a second limiting member (22). A second compression spring (23) is sleeved on the second pull rod (20). The two ends of the second compression spring (23) are respectively the second limiting member (22) and the second stop (21).

6. A combine harvester straw-moving device mounting structure according to any one of claims 1 to 5, characterized in that, Multiple keyboxes (5) are arranged side by side and are rotatably connected to the front crankshaft assembly (3) and the rear crankshaft assembly (4); the front crankshaft assembly (3) and the rear crankshaft assembly (4) both include a five-journey crankshaft (24), the two ends of the five-journey crankshaft (24) are rotatably connected to the frame respectively, and a flange bearing (25) is fixedly sleeved on each journal of the five-journey crankshaft (24), and a bearing seat (26) is fixedly sleeved on the flange bearing (25), and the bearing seat (26) is fixedly connected to the keybox (5).

7. The combine harvester sawyer mounting structure according to claim 6, characterized in that, The key box (5) is fixedly connected to the bearing seat (26) by bolts (27) and nuts (28).

8. A combine harvester straw-moving device mounting structure according to any one of claims 1 to 5, characterized in that, The frame includes two frame upper beams (29) spaced apart and a left side wall inner section (1) and a right side wall inner section (2) spaced apart and parallel to each other; the front crankshaft assembly (3) and the rear crankshaft assembly (4) are spaced apart between the left side wall inner section (1) and the right side wall inner section (2), and the two ends of the front crankshaft assembly (3) and the rear crankshaft assembly (4) are rotatably connected to the left side wall inner section (1) and the right side wall inner section (2) respectively. The left side wall inner section (1) and the right side wall inner section (2) are fixed on the two frame upper beams (29) respectively.

9. A combine harvester straw-moving device mounting structure according to any one of claims 1 to 5, characterized in that, The front crankshaft assembly (3) and the rear crankshaft assembly (4) are respectively connected to the frame via spherical ball bearings (30).

10. A harvester, characterized in that, Includes the combine harvester straw-moving device mounting structure as described in any one of claims 1 to 9.

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