Chain cutter header and silage harvester

Abstract

The utility model discloses a chain cutter header and a silage harvester. Comprising a main beam frame, a main transmission chain wheel rotationally arranged on the main beam frame, a power transmission box body used for driving the main transmission chain wheel, a sliding seat arranged on the main beam frame in a sliding mode, a driven chain wheel rotationally arranged on the sliding seat, and a movable cutter assembly arranged on the main transmission chain wheel and the driven chain wheel in a winding mode. The tensioning mechanism is used for driving the sliding seat to move in a reciprocating mode so as to tension the movable cutter assembly, the fixed cutter assembly is arranged on the main beam frame and matched with the movable cutter assembly, a cutter grinding mechanism used for grinding the movable cutter assembly is arranged on the main beam frame, and it can be guaranteed that a cutting edge can be kept sharp when the movable cutter assembly works; the chain cutter header is kept in the optimal working state, the power consumption of the chain cutter header is reduced, the efficiency of the silage harvester is improved, meanwhile, normal operation of the chain cutter header is not affected in the cutter sharpening process, and the maintenance time for shutdown cutter sharpening and chain cutter replacement can be shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and particularly to a chain knife cutter bar. In addition, the utility model also relates to a forage harvester including the above-mentioned chain knife cutter bar. Background Art

[0002] In a forage harvester, the cutter bar device is one of its core components, mainly cutting the forage crops from the roots, gathering and collecting them, and then transporting them to the next working component, namely the feeding device. The chain knife cutter bar forms a cutting pair with a fixed knife by a chain knife, cutting the crops from the roots. When harvesting lodged crops, the chain knife cutter bar can effectively reduce the cutter bar power compared with a disc cutter bar. Therefore, the chain knife cutter bar is widely used.

[0003] Since the average daily workload of the forage harvester is 100 - 200 mu, and the yield per mu is about 3t, the chain knife needs to continuously cut, with a huge workload. As the working time increases, the cutter bar blades will be worn to varying degrees. After wear, the chain knife becomes dull. Due to the reduction of the cutting efficiency of the chain knife cutter bar, the power loss of the whole cutter bar will be relatively large. It is necessary to grind or replace the worn blades in time. Because the number of chain knives is huge, stopping the machine to grind the knives or replace the chain knives is time-consuming and laborious, seriously affecting the working efficiency of the forage harvester. Summary of the Utility Model

[0004] The utility model provides a chain knife cutter bar and a forage harvester to solve the technical problem that when the cutter bar blades of the existing chain knife cutter bar are worn, it is necessary to stop the machine to grind the knives or replace the chain knives, which is time-consuming and laborious and affects the working efficiency of the forage harvester.

[0005] According to one aspect of the utility model, a chain knife cutter bar is provided, including a main beam frame, a main drive sprocket rotatably arranged on the main beam frame, a power transmission box body for driving the main drive sprocket, a sliding seat slidably arranged on the main beam frame, a driven sprocket rotatably arranged on the sliding seat, a moving knife assembly wound around the main drive sprocket and the driven sprocket, a tensioning mechanism for driving the sliding seat to reciprocate to tension the moving knife assembly, and a fixed knife assembly arranged on the main beam frame and adapted to the moving knife assembly. A knife grinding mechanism for grinding the moving knife assembly is arranged on the main beam frame.

[0006] In this embodiment, the knife grinding mechanism includes a knife grinding seat installed on the main beam frame and a grinding knife installed on the knife grinding seat.

[0007] In this embodiment, through holes are arranged at intervals on the grinding knife, kidney-shaped holes adapted to the through holes are formed on the knife grinding seat, and the grinding knife and the knife grinding seat are connected by fasteners.

[0008] In this embodiment, the main beam frame is provided with a first mounting seat for mounting the tensioning mechanism, a slide rail for slidably connecting the sliding seat, a second mounting seat for mounting the power transmission box body, and a third mounting seat for mounting the fixed knife assembly.

[0009] In this embodiment, the tensioning mechanism includes a tensioning seat mounted on the first mounting seat, a tensioning screw rod movably disposed on the tensioning seat, a thrust sleeve sleeved on the tensioning screw rod, and a tensioning spring disposed between the tensioning seat and the thrust sleeve. The tensioning spring is sleeved on the tensioning screw rod.

[0010] In this embodiment, the sliding seat includes a base for connecting the driven sprocket, a connecting plate disposed on the base for connecting the tensioning screw rod, and a traveling assembly disposed on the base and adapted to the slide rail.

[0011] In this embodiment, the moving knife assembly includes a plurality of chain links. The chain link includes a chain link weld, a chain knife disposed on the chain link weld, and a connecting pin for connection. One chain link weld is movably connected to an adjacent chain link weld through the connecting pin.

[0012] In this embodiment, a crop holding plate for stabilizing the silage crop is disposed on the chain link weld.

[0013] In this embodiment, the crop holding plate includes an L-shaped baffle and a U-shaped conveying plate. The L-shaped baffle, the U-shaped conveying plate, and the chain knife are sequentially disposed from top to bottom along the axial direction of the connecting pin.

[0014] According to another aspect of the present invention, a silage harvester is further provided, which includes the above-mentioned chain knife cutting table.

[0015] The present invention has the following beneficial effects:

[0016] For the chain knife cutting table of the present invention, power is transmitted from the power transmission box body to the main transmission sprocket, and the main transmission sprocket cooperates with the driven sprocket to drive the moving knife assembly to perform a circular motion. When the chain knife cutting table approaches the silage crop, the moving knife assembly and the fixed knife assembly form a shearing motion to first cut the silage crop, and convey the silage crop to a designated position to complete the harvesting of the crop. Since the moving knife assembly is tensioned by the tensioning mechanism, only the position and angle of the knife grinding mechanism need to be adjusted to realize the grinding of the moving knife assembly. Each chain knife can be ground when the moving knife assembly rotates in a circle, ensuring that the cutting edge of the moving knife assembly is sharp during operation, enabling the chain knife cutting table to maintain the best working state, reducing the power consumption of the chain knife cutting table, improving the efficiency of the silage harvester, and at the same time not affecting the normal operation of the chain knife cutting table during the knife grinding process, reducing the maintenance time of stopping the machine for knife grinding and replacing the chain knife.

[0017] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the drawings to further elaborate on the utility model in detail. Description of the Drawings

[0018] The drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the chain knife cutting table of the preferred embodiment of the utility model;

[0020] Figure 2 is a schematic structural diagram of the main beam frame of the preferred embodiment of the utility model;

[0021] Figure 3 is a schematic structural diagram of the knife grinding mechanism of the preferred embodiment of the utility model;

[0022] Figure 4 is a schematic structural diagram of the sliding seat of the preferred embodiment of the utility model;

[0023] Figure 5 is a schematic structural diagram of the chain link of the preferred embodiment of the utility model;

[0024] Figure 6 is a schematic structural diagram of the tensioning screw rod of the preferred embodiment of the utility model.

[0025] Legend Explanation:

[0026] 1, power transmission box body; 2, main beam frame; 21, first mounting seat; 22, slide rail; 23, second mounting seat; 24, third mounting seat; 3, knife grinding mechanism; 31, knife grinding seat; 311, kidney-shaped hole; 32, grinding knife; 4, driven sprocket; 5, sliding seat; 51, connecting plate; 52, traveling component; 53, base; 6, main drive sprocket; 7, moving knife assembly; 71, chain knife; 72, lifting plate; 721, L-shaped baffle; 722, U-shaped conveying plate; 73, chain link welding; 74, connecting pin shaft; 8, tensioning mechanism; 81, tensioning seat; 84, tensioning screw rod; 83, thrust sleeve; 82, tensioning spring; 9, fixed knife assembly. Detailed Embodiment

[0027] The following will elaborate on the embodiments of the utility model in detail with reference to the drawings. However, the utility model can be implemented in many different ways defined and covered by the following.

[0028] Please refer to... together Figures 1 to 6, the chain knife cutter table of this embodiment includes a main beam frame 2, a main drive sprocket 6 rotatably arranged on the main beam frame 2, a power transmission box body 1 for driving the main drive sprocket 6, a sliding seat 5 slidably arranged on the main beam frame 2, a driven sprocket 4 rotatably arranged on the sliding seat 5, a moving knife assembly 7 wound around the main drive sprocket 6 and the driven sprocket 4, a tensioning mechanism 8 for driving the sliding seat 5 to reciprocate to tension the moving knife assembly 7, and a fixed knife assembly 9 arranged on the main beam frame 2 and adapted to the moving knife assembly 7. A knife grinding mechanism 3 for grinding the moving knife assembly 7 is arranged on the main beam frame 2.

[0029] In the chain knife cutter table of this embodiment, the power transmission box body 1 transmits power to the main drive sprocket 6, and the main drive sprocket 6 cooperates with the driven sprocket 4 to drive the moving knife assembly 7 to perform a circular motion. When the chain knife cutter table approaches the silage crop, the moving knife assembly 7 and the fixed knife assembly 9 form a shearing motion to first cut the silage crop and convey the silage crop to a designated position to complete the harvesting of the crop. Since the moving knife assembly 7 is tensioned by the tensioning mechanism 8, only by adjusting the position and angle of the knife grinding mechanism 3 can the grinding of the moving knife assembly 7 be realized. Each chain knife can be ground when the moving knife assembly 7 rotates in a circle, ensuring that the cutting edge of the moving knife assembly 7 is sharp during operation, enabling the chain knife cutter table to maintain the best working state, reducing the power consumption of the chain knife cutter table, improving the efficiency of the silage harvester, and at the same time not affecting the normal operation of the chain knife cutter table during the knife grinding process, reducing the maintenance time of stopping for knife grinding and replacing the chain knife.

[0030] In this embodiment, the knife grinding mechanism 3 includes a knife grinding seat 31 installed on the main beam frame 2 and a grinding knife 32 installed on the knife grinding seat 31, with a simple structure and the grinding knife 32 can be quickly replaced.

[0031] In this embodiment, two through holes are arranged at intervals on the grinding knife 32, and a kidney-shaped hole 311 adapted to the through holes is opened on the knife grinding seat 31. The grinding knife 32 and the knife grinding seat 31 are connected by fasteners. The fasteners pass through the through holes and the kidney-shaped hole 311. By adjusting the position of the fasteners in the kidney-shaped hole 311 and locking them, the position and angle of the grinding knife 32 can be quickly adjusted, which can not only ensure the knife grinding effect but also improve the utilization rate of the grinding knife 32 and reduce the use cost. Optionally, the fasteners are bolts.

[0032] In this embodiment, a first mounting seat 21 for mounting the tensioning mechanism 8, a slide rail 22 for slidably connecting the sliding seat 5, a second mounting seat 23 for mounting the power transmission box body 1, and a third mounting seat 24 for mounting the fixed knife assembly 9 are arranged on the main beam frame 2, with a reasonable layout and a compact structure.

[0033] In this embodiment, the tensioning mechanism 8 includes a tensioning seat 81 mounted on the first mounting seat 21, a tensioning screw rod 84 movably disposed on the tensioning seat 81, a thrust sleeve 83 sleeved on the tensioning screw rod 84, and a tensioning spring 82 disposed between the tensioning seat 81 and the thrust sleeve 83. The tensioning spring 82 is sleeved on the tensioning screw rod 84. The tensioning seat 81 is connected to the first mounting seat 21 by bolts, and the tensioning screw rod 84 is connected to the sliding seat 5 by bolts. The tensioning screw rod 84 can reciprocate along its axial direction relative to the tensioning seat 81. By applying pressure to the thrust sleeve 83 through the tensioning spring 82, the tensioning screw rod 84 drives the sliding seat 5 to tension the moving knife assembly 7. Its structure is simple and the tensioning effect is good. Optionally, the tensioning seat 81 is a cylindrical structure with one end open, and the first end of the tensioning spring 82 is embedded in the tensioning seat 81, which can limit the radial deformation of the tensioning spring 82. Optionally, an annular boss is arranged on the thrust sleeve 83, and the second end of the tensioning spring 82 is sleeved on the annular boss, which can position the second end of the tensioning spring 82 and prevent the second end of the tensioning spring 82 from skewing.

[0034] In this embodiment, the sliding seat 5 includes a base 53 for connecting the driven sprocket 4, a connecting plate 51 disposed on the base 53 for connecting the tensioning screw rod 84, and a traveling component 52 disposed on the base 53 and adapted to the slide rail 22. Optionally, the traveling component 52 is a roller that is in rolling connection with the slide rail 22. Optionally, the traveling component 52 is a chute that is in sliding connection with the slide rail 22.

[0035] In this embodiment, the moving knife assembly 7 includes a plurality of chain links. The chain link includes a chain link weld 73, a chain knife 71 disposed on the chain link weld 73, and a connecting pin shaft 74 for connection. One chain link weld 73 is movably connected to an adjacent chain link weld 73 through the connecting pin shaft 74.

[0036] In this embodiment, a reaping board 72 for stabilizing the silage crop is arranged on the chain link weld 73 to convey the silage crop to a designated position.

[0037] In this embodiment, the reaping board 72 includes an L-shaped baffle 721 and a U-shaped conveying board 722. The L-shaped baffle 721, the U-shaped conveying board 722, and the chain knife 71 are arranged in sequence from top to bottom along the axial direction of the connecting pin shaft 74. Two adjacent L-shaped baffles 721 form large conveying teeth, and small conveying teeth are formed on a single U-shaped conveying board 722, which can convey silage crops with different rod diameters and improve the conveying efficiency. The chain knife 71 is arranged at the bottommost to make the cutting position as close as possible to the root of the silage crop to avoid waste.

[0038] A silage harvester includes the above-mentioned chain knife cutter bar.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A chain cutter table, characterized in that: The invention comprises a main beam frame (2), a main transmission sprocket (6) rotatably arranged on the main beam frame (2), a power transmission box (1) for driving the main transmission sprocket (6), a sliding seat (5) slidably arranged on the main beam frame (2), a driven sprocket (4) rotatably arranged on the sliding seat (5), a movable knife assembly (7) wound around the main transmission sprocket (6) and the driven sprocket (4), a tensioning mechanism (8) for driving the sliding seat (5) to reciprocate to tension the movable knife assembly (7), and a fixed knife assembly (9) arranged on the main beam frame (2) and adapted to the movable knife assembly (7); a sharpening mechanism (3) for grinding the movable knife assembly (7) is arranged on the main beam frame (2).

2. The chain cutter table according to claim 1, characterized in that: The knife sharpening mechanism (3) comprises a knife sharpening seat (31) mounted on the main beam frame (2) and a sharpening knife (32) mounted on the knife sharpening seat (31).

3. The chain cutter table according to claim 2, characterized in that: The grinding knife (32) is provided with through holes at intervals, the grinding seat (31) is provided with waist-shaped holes (311) adapted to the through holes, and the grinding knife (32) is connected to the grinding seat (31) via a fastener.

4. The chain cutter table according to claim 2 or 3, characterized in that: The main beam frame (2) is provided with a first mounting seat (21) for mounting the tensioning mechanism (8), a slide rail (22) for slidably connecting the slide seat (5), a second mounting seat (23) for mounting the power transmission housing (1), and a third mounting seat (24) for mounting the fixed knife assembly (9).

5. The chain cutter table according to claim 4, characterized in that: The tensioning mechanism (8) comprises a tensioning seat (81) mounted on the first mounting seat (21), a tensioning screw (84) movably arranged on the tensioning seat (81), a thrust sleeve (83) sleeved on the tensioning screw (84), and a tensioning spring (82) arranged between the tensioning seat (81) and the thrust sleeve (83), wherein the tensioning spring (82) is sleeved on the tensioning screw (84).

6. The chain cutter table according to claim 5, characterized in that: The sliding seat (5) comprises a base (53) for connecting to the driven sprocket (4), a connecting plate (51) arranged on the base (53) for connecting to the tensioning screw rod (84), and a travel assembly (52) arranged on the base (53) and adapted to the slide rail (22).

7. The chain cutter table according to claim 1, characterized in that: The movable knife assembly (7) comprises a plurality of chain links, wherein the chain links comprise chain link welds (73), chain knives (71) arranged on the chain link welds (73) and connecting pins (74) having a connecting function, and one chain link weld (73) is movably connected to an adjacent chain link weld (73) via the connecting pins (74).

8. The chain cutter table according to claim 7, characterized in that: The chain link weld (73) is provided with a straw supporting plate (72) for stabilizing silage crops.

9. The chain cutter table according to claim 8, characterized in that: The rice supporting plate (72) comprises an L-shaped baffle plate (721) and a U-shaped conveying plate (722), and the L-shaped baffle plate (721), the U-shaped conveying plate (722) and the chain knife (71) are arranged in sequence from top to bottom along the axial direction of the connecting pin shaft (74).

10. A forage harvester, characterized in that: The invention comprises a chain knife cutting table according to any one of claims 1 to 9.

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