Straw cleaning device for vertical header of corn harvester
By introducing a straw cleaning device with a hook mechanism and a stem pulling roller in the vertical cutting table of the corn harvester, the problem of blockage in the front of the stem pulling roller is solved, and the automatic cleaning of straw is realized, ensuring the normal separation and transportation of fruit ears and straw.
Patent Information
- Application Number
- CN202422748037.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-12
AI Technical Summary
In the existing corn harvester vertical cutting platform, straw blockage is prone to occur in front of the stem pulling roller, which affects the separation and transportation of fruit ears and straw.
A vertical cutting table straw cleaning device for corn harvester is designed. Through a hooking mechanism and a stem pulling roller, the hooking mechanism is used to drive the hooking mechanism to pull the straw blocked in front of the stem pulling roller into the back side of the stem pulling roller, and convey it backward through the conveying channel to achieve automatic cleaning.
It effectively avoids the clogging of straw in front of the stem pulling roller, ensures the normal separation and discharge of fruit ears and straw, and improves the harvesting efficiency.
Smart Images
Figure CN223286229U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of cleaning devices, and in particular relates to a straw cleaning device for a vertical cutting platform of a corn harvester. Background Art
[0002] A corn harvester is an agricultural machine that uses machinery to harvest corn stalks according to agronomic requirements when the corn is mature or nearly mature. A cutting table needs to be installed on the front of the corn harvester to cut the stalks and collect the ears. A vertical cutting table is a type of harvester cutting table. During use, the vertical cutting table uses the straw chain to clamp and push the corn stalks toward the stalk pulling roller, and then the stalk pulling roller and the picking roller cooperate to separate the stalks and ears. Finally, the stalks are pulled backwards by the stalk pulling roller and fed into the conveying channel for output.
[0003] However, in the prior art, the stems in front of the stem pulling roller may not be transported in time by the stem pulling roller, resulting in stem blockage, which affects the subsequent stem-ear separation and stem transportation. Utility Model Content
[0004] In response to the above problems, the purpose of the present utility model is to provide a straw cleaning device for a vertical cutting table of a corn harvester, which, through the cooperation of a hook knife mechanism and a stem pulling roller, pulls the straw originally blocked in front of the stem pulling roller into the rear side of the stem pulling roller, and transports it backward through the conveying mechanism inside the conveying channel, thereby completing the automatic cleaning of the blocked straw in front of the stem pulling roller inside the cutting table, and avoiding a large amount of straw blocking in front of the stem pulling roller, affecting the separation between the ears and the straw and the backward discharge of the straw.
[0005] To achieve the above purpose, the utility model provides the following technical solutions: a corn harvester vertical cutting table straw cleaning device, including a cutting table, the rear end of the cutting table is connected to a conveying channel, the top and bottom of the conveying channel are respectively installed with a stalk pulling roller upper fixing frame and a stalk pulling roller lower fixing frame, a stalk pulling roller is rotatably installed between the stalk pulling roller upper fixing frame and the stalk pulling roller lower fixing frame, the middle section of the stalk pulling roller is provided with a straw sprocket, the top of the stalk pulling roller upper fixing frame is installed with a protective cover, the inner side of the conveying channel is located behind the stalk pulling roller and is provided with a first sprocket mounting shaft and a second sprocket mounting shaft. The outer fixing sleeve of the first sprocket mounting shaft is provided with a first sprocket, and the outer fixing sleeve of the second sprocket mounting shaft is provided with a second sprocket, a chain is connected between the first sprocket and the second sprocket, and a straw cleaning device is connected to the outer side of the chain, and the straw cleaning device includes a connecting shaft connected to the pin shaft of the chain, one end of the connecting shaft is connected to the fixing frame, and the front side of the fixing frame is provided with a first screw seat, the first screw seat and the connecting plate are connected by bolts, and one end of the connecting plate is provided with a second screw seat, and the second screw seat and the hook knife mechanism are connected by bolts.
[0006] The beneficial effects of the utility model are as follows: when the gap between the stalk pulling rollers is blocked by straw, the second drive shaft can be driven to rotate by the power system of the harvester, and the rotation of the second drive shaft can drive the first sprocket mounting shaft to rotate, thereby driving the first sprocket to rotate, and the rotation of the first sprocket drives the chain to operate with the assistance of the second sprocket, thereby driving the hook knife mechanism to move accordingly, and when the hook knife mechanism moves from the rear side of the first sprocket around the top of the first sprocket to the front of the first sprocket as the chain runs, the hook knife mechanism penetrates between the stalk pulling rollers and moves downward, and the hook knife pierces the position The hook knife mechanism can pull the blocked straw between and in front of the stem pulling roller and drive it downward. When the hook knife mechanism moves to the second sprocket with the operation of the chain and turns again, the hooked straw can be pulled into the inside of the stem pulling roller by the hook knife mechanism. Through the cooperation of the hook knife mechanism and the stem pulling roller, the straw originally blocked in front of the stem pulling roller is pulled into the rear side of the stem pulling roller and transported backward through the conveying mechanism inside the conveying channel, thereby completing the automatic cleaning of the blocked straw in front of the stem pulling roller inside the cutting table, avoiding a large amount of straw blocking in front of the stem pulling roller, affecting the separation between the fruit ears and the straw and the backward discharge of the straw.
[0007] To clean the straw:
[0008] As a further improvement of the above technical solution: the hook knife mechanism includes a knife seat fixed to the second screw seat by bolts, one end of the knife seat is connected to the main knife body, and one end of the main knife body is connected to the hook knife.
[0009] The beneficial effect of this improvement is: when the hook knife mechanism moves from the rear side of the first sprocket around the top of the first sprocket to the front of the first sprocket as the chain runs, the hook knife mechanism penetrates between the stem pulling rollers and moves downward, and penetrates the blocked straw between and in front of the stem pulling rollers through the hook knife, and drives it downward; when the hook knife mechanism moves to the second sprocket as the chain runs and turns again, the hooked straw can be pulled into the inner side of the stem pulling roller through the hook knife mechanism.
[0010] In order to synchronize the rotation of the stalk rollers:
[0011] As a further improvement of the above technical solution: the top of the stem pulling roller is connected with a gear, and two adjacent stem pulling rollers are meshed through the gear.
[0012] The beneficial effect of this improvement is that two adjacent stem pulling rollers are engaged with each other through gears, and when one stem pulling roller is driven to rotate, the other stem pulling rollers rotate synchronously with it.
[0013] In order to drive the stem pulling roller to rotate:
[0014] As a further improvement of the above technical solution: the top plate of the protective cover passes through and is connected to a first drive shaft, and the bottom end of the first drive shaft is connected to a stem pulling roller.
[0015] The beneficial effect of this improvement is that the first drive shaft is connected to the power system of the harvester, and the stem pulling roller connected thereto is driven to rotate by the first drive shaft.
[0016] To drive the hook knife mechanism to move:
[0017] As a further improvement of the above technical solution: one end of the first sprocket mounting shaft passes through the conveying channel and is connected to the second drive shaft.
[0018] The beneficial effect of this improvement is that the second drive shaft is connected to the power system of the harvester, and the rotation of the second drive shaft drives the first sprocket mounting shaft to rotate, thereby driving the chain to operate in cooperation with the second sprocket, and then driving the hook knife mechanism to move.
[0019] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the right front axonometric structure of the present invention;
[0021] Figure 2 It is a partial axonometric diagram of the present utility model;
[0022] Figure 3 It is a partial rear axonometric diagram of the present invention;
[0023] Figure 4 This is a partial back view of the present invention;
[0024] Figure 5 This is a partial axonometric diagram of the straw cleaning device in the present invention;
[0025] Figure 6 This is a structural diagram of the hook knife mechanism in the utility model (1);
[0026] Figure 7 This is a structural diagram of the hook knife mechanism in the utility model (II);
[0027] In the figure: 1. cutting table; 2. conveying channel; 3. upper fixing frame of stem pulling roller; 4. lower fixing frame of stem pulling roller; 5. straw sprocket; 6. stem pulling roller; 7. gear; 8. protective cover; 9. first sprocket mounting shaft; 10. second drive shaft; 11. first sprocket; 12. second sprocket mounting shaft; 13. second sprocket; 14. chain; 15. connecting shaft; 16. fixing frame; 17. first screw seat; 18. connecting plate; 19. second screw seat; 20. hook knife mechanism; 21. first drive shaft; 22. knife seat; 23. main knife body; 24. hook knife. DETAILED DESCRIPTION
[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.
[0029] like Figure 1-7 As shown, a corn harvester vertical cutting platform straw cleaning device includes a cutting platform 1, the rear end of the cutting platform 1 is connected to a conveying channel 2, the top and bottom of the conveying channel 2 are respectively installed with a stalk pulling roller upper fixing frame 3 and a stalk pulling roller lower fixing frame 4, a stalk pulling roller 6 is rotatably installed between the stalk pulling roller upper fixing frame 3 and the stalk pulling roller lower fixing frame 4, the middle section of the stalk pulling roller 6 is provided with a straw sprocket 5, the top of the stalk pulling roller upper fixing frame 3 is installed with a protective cover 8, the inner side of the conveying channel 2 is located behind the stalk pulling roller 6 and is provided with a first sprocket mounting shaft 9 and a second sprocket mounting shaft 12, the outer fixed sleeve of the first sprocket mounting shaft 9 is provided with a first chain Wheel 11, the outer fixed sleeve of the second sprocket mounting shaft 12 is provided with a second sprocket 13, a chain 14 is connected between the first sprocket 11 and the second sprocket 13, and a straw cleaning device is connected to the outer side of the chain 14, and the straw cleaning device includes a connecting shaft 15 connected to the pin shaft of the chain 14, one end of the connecting shaft 15 is connected to the fixing frame 16, and the front of the fixing frame 16 is provided with a first screw seat 17, the first screw seat 17 and the connecting plate 18 are connected by bolts, and one end of the connecting plate 18 is provided with a second screw seat 19, and the second screw seat 19 and the hook knife mechanism 20 are connected by bolts.
[0030] When the gap between the stem pulling rollers 6 is clogged with straw, the second drive shaft 10 can be driven to rotate by the power system of the harvester. The rotation of the second drive shaft 10 can drive the first sprocket mounting shaft 9 to rotate, thereby driving the first sprocket 11 to rotate. The rotation of the first sprocket 11 drives the chain 14 to operate with the assistance of the second sprocket 13, thereby driving the hook knife mechanism 20 to move accordingly. When the hook knife mechanism 20 moves from the rear side of the first sprocket 11 around the top of the first sprocket 11 to the front of the first sprocket 11 as the chain 14 runs, the hook knife mechanism 20 penetrates between the stem pulling rollers 6 and moves downward, and penetrates into the position through the hook knife 24. The straw blocked between and in front of the stem pulling roller 6 is pulled downward. When the hook knife mechanism 20 moves to the second sprocket 13 with the operation of the chain 14 and turns again, the hooked straw can be pulled into the inner side of the stem pulling roller 6 by the hook knife mechanism 20. Through the cooperation of the hook knife mechanism 20 and the stem pulling roller 6, the straw originally blocked in front of the stem pulling roller 6 is pulled into the rear side of the stem pulling roller 6 and transported backward through the conveying mechanism inside the conveying channel 2, completing the automatic cleaning of the blocked straw in front of the stem pulling roller 6 inside the cutting table, avoiding a large amount of straw blocking in front of the stem pulling roller 6, affecting the separation between the fruit ears and the straw and the backward discharge of the straw.
[0031] The hook knife mechanism 20 includes a knife seat 22 fixed to the second screw seat 19 by bolts. One end of the knife seat 22 is connected to the main knife body 23, and one end of the main knife body 23 is connected to the hook knife 24.
[0032] When the hook knife mechanism 20 moves from the rear side of the first sprocket 11 around the top of the first sprocket 11 to the front of the first sprocket 11 as the chain 14 runs, the hook knife mechanism 20 penetrates between the stem pulling rollers 6 and moves downward, and penetrates the blocked straw between and in front of the stem pulling rollers 6 through the hook knife 24 and drives it downward. When the hook knife mechanism 20 moves to the second sprocket 13 as the chain 14 runs and turns again, the hooked straw can be pulled into the inner side of the stem pulling roller 6 through the hook knife mechanism 20.
[0033] The top of the stem pulling roller 6 is connected to a gear 7 , and two adjacent stem pulling rollers 6 are meshed with each other through the gear 7 .
[0034] Two adjacent stem pulling rollers 6 are meshed with each other through a gear 7. When one stem pulling roller 6 is driven to rotate, the other stem pulling rollers 6 rotate synchronously with it.
[0035] The top plate of the protective cover 8 passes through and is connected to a first driving shaft 21 , and the bottom end of the first driving shaft 21 is connected to a stem pulling roller 6 .
[0036] The first drive shaft 21 is connected to the power system of the harvester, and the first drive shaft 21 drives the stem pulling roller 6 connected thereto to rotate.
[0037] One end of the first sprocket mounting shaft 9 passes through the conveying channel 2 and is connected to the second driving shaft 10 .
[0038] The second drive shaft 10 is connected to the power system of the harvester. The rotation of the second drive shaft 10 drives the first sprocket mounting shaft 9 to rotate, thereby driving the chain 14 to operate in cooperation with the second sprocket 13, and then driving the hook knife mechanism 20 to move.
[0039] The working principle and use process of the present invention are as follows: when the device is in operation, the first driving shaft 21 is driven to rotate by the power system of the harvester, and the rotation of the first driving shaft 21 drives the stem pulling roller 6 connected thereto to rotate, and the adjacent stem pulling rollers 6 are transmitted through the gear 7, so that all the stem pulling rollers 6 can rotate synchronously, and the straw sprocket 5 on the stem pulling roller 6 is connected to the straw plucking chain, which is used to drive the straw plucking chain to operate, and feed the straw between the stem pulling rollers 6 through the straw plucking chain. When the gap between the stem pulling rollers 6 is clogged with straw, the second driving shaft 10 can be driven to rotate by the power system of the harvester, and the rotation of the second driving shaft 10 can drive the first sprocket mounting shaft 9 to rotate, thereby driving the first sprocket 11 to rotate, and the rotation of the first sprocket 11 drives the chain 14 to operate with the assistance of the second sprocket 13, thereby driving the hook knife mechanism 20 to move accordingly. When the chain 14 moves from the rear side of the first sprocket 11 around the top of the first sprocket 11 to the front of the first sprocket 11, the hooking knife mechanism 20 penetrates between the stem pulling rollers 6 and moves downward, and penetrates the blocked straw between and in front of the stem pulling rollers 6 through the hooking knife 24, and drives it downward. When the hooking knife mechanism 20 moves to the second sprocket 13 as the chain 14 runs and turns again, the hooked straw can be pulled into the inside of the stem pulling roller 6 by the hooking knife mechanism 20. Through the cooperation of the hooking knife mechanism 20 and the stem pulling roller 6, the straw originally blocked in front of the stem pulling roller 6 is pulled into the rear side of the stem pulling roller 6 and transported backward through the conveying mechanism inside the conveying channel 2, thereby completing the automatic cleaning of the blocked straw in front of the stem pulling roller 6 inside the cutting table, and avoiding a large amount of straw blocking in front of the stem pulling roller 6, which affects the separation between the fruit ear and the straw and the backward discharge of the straw.
[0040] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.
[0041] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of the present utility model.
Claims
1. A corn harvester vertical header straw cleaning device, characterized by: The invention comprises a cutting platform (1), the rear end of the cutting platform (1) is connected to a conveying channel (2), the top and bottom of the conveying channel (2) are respectively installed with an upper fixing frame (3) of a stem pulling roller and a lower fixing frame (4) of a stem pulling roller, a stem pulling roller (6) is rotatably installed between the upper fixing frame (3) of the stem pulling roller and the lower fixing frame (4), the middle section of the stem pulling roller (6) is provided with a straw sprocket (5), the top of the upper fixing frame (3) of the stem pulling roller is provided with a protective cover (8), the inner side of the conveying channel (2) is located behind the stem pulling roller (6) and is provided with a first sprocket mounting shaft (9) and a second sprocket mounting shaft (12), the outer fixing sleeve of the first sprocket mounting shaft (9) is provided with a first sprocket (11), and the second sprocket is provided with a second sprocket. A second sprocket (13) is provided on the outer fixed sleeve of the mounting shaft (12); a chain (14) is connected between the first sprocket (11) and the second sprocket (13); a straw cleaning device is connected to the outer side of the chain (14); the straw cleaning device comprises a connecting shaft (15) connected to the pin shaft of the chain (14); one end of the connecting shaft (15) is connected to the fixing frame (16); a first screw seat (17) is provided on the front of the fixing frame (16); the first screw seat (17) is connected to the connecting plate (18) by bolts; a second screw seat (19) is provided at one end of the connecting plate (18); the second screw seat (19) is connected to the hook knife mechanism (20) by bolts.
2. The corn harvester vertical header straw cleaning device according to claim 1, characterized in that: The hook knife mechanism (20) includes a knife seat (22) fixed to the second screw seat (19) by bolts, one end of the knife seat (22) is connected to the main knife body (23), and one end of the main knife body (23) is connected to the hook knife (24).
3. The corn harvester vertical header straw cleaning device according to claim 1, characterized in that: The top of the stem pulling roller (6) is connected to a gear (7), and two adjacent stem pulling rollers (6) are meshed with each other through the gear (7).
4. The corn harvester vertical header straw cleaning device according to claim 1, characterized in that: A first drive shaft (21) is passed through and connected to the top plate of the protective cover (8), and the bottom end of the first drive shaft (21) is connected to a stem pulling roller (6).
5. The corn harvester vertical header straw cleaning device according to claim 1, characterized in that: One end of the first sprocket mounting shaft (9) passes through the conveying channel (2) and is connected to the second drive shaft (10).