A turnover mechanism of a straw pulverizing device of a harvester

Abstract

The utility model discloses a kind of turnover mechanisms of harvester straw pulverizing device, including harvester threshing chamber and straw pulverizing device, the both sides wall of harvester threshing chamber is fixedly connected with support, the lower side of the side of support away from harvester threshing chamber is provided with L type mouth, the both sides top end inner wall of L type mouth is all provided with side plate, two the side plate is rotatably connected with connecting shaft by bearing between, the top end both sides of straw pulverizing device are all fixedly connected with connecting shaft by connecting arm. The utility model is over by setting transmission assembly, so that traction plate and straw pulverizing device no longer coaxial rotation, greatly increase structural stability, by the shape of traction plate is set to octagon half, and not set on traction plate Hole, greatly guarantee the strength of traction plate.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, and in particular relates to a turning mechanism of a straw crushing device for a harvester. Background Technology

[0002] Agricultural mechanization is becoming increasingly widespread, with combine harvesters now used for harvesting crops such as wheat and rice. After threshing, the straw is processed in two ways. One method involves equipping the combine harvester with a straw crushing device located at the outlet of the threshing chamber. The threshed straw is transported to the crushing device, crushed, and then spread back into the field, achieving straw return to the field. The other method involves directly discharging the straw from the combine harvester's threshing chamber and spreading it on the ground, where it can be collected later by other machinery. Intact straw is easier to recycle.

[0003] Different methods of processing straw after threshing require harvesters to be adaptable to different harvesting requirements. Existing harvesters are usually equipped with straw crushing devices, which are fixed to the straw outlet at the rear of the threshing chamber by bolts.

[0004] When harvesters are operating across regions, they need to be transported by trucks. When renting trucks, the most suitable length should be selected. However, the protruding straw crushing device at the rear of the threshing chamber often necessitates a longer truck, increasing transportation costs. To save on transportation costs, the straw crushing device needs to be removed, and its reinstallation can be determined upon arrival at the destination.

[0005] After the harvester arrives at its destination, the decision on whether to disassemble the straw crushing device is made based on the user's straw processing requirements. If the user requests that the straw not be crushed, then the straw crushing device needs to be disassembled. The straw crushing device consists of a housing, several fixed blades, and a moving shaft with several movable blades. The straw crushing device is very heavy, and disassembly and assembly at the harvesting site cannot be completed by one person. Moreover, after disassembly, it must be reassembled after the harvesting operation is finished. Although the disassembly and assembly method does not require much technical skill, the weight of the straw crushing device itself makes the disassembly and assembly process still very difficult.

[0006] A search revealed that Chinese Patent CN216960809U discloses a tilting mechanism for a harvester's straw crushing device. This mechanism includes a threshing chamber and a straw crushing device located at the outlet of the threshing chamber. The top of the straw crushing device is connected to the outlet of the threshing chamber via a rotating shaft, allowing the straw crushing device to rotate vertically around this shaft. A torsion spring is mounted on the shaft, with one end fixed to the top of the straw crushing device. A locking device for securing the straw crushing device is also provided between the threshing chamber and the straw crushing device. The patent also discloses a harvester utilizing this tilting mechanism, enabling rapid disassembly and installation of the straw crushing device. This allows for the selection of trucks with appropriate wheelbase or track length for long-distance transport, reducing transportation costs associated with using longer trucks. Furthermore, it allows for quick assembly and disassembly of the straw crushing device during harvesting operations, based on the post-harvest straw processing requirements. However, the coaxial rotation between the traction plate and the crusher in this flipping mechanism increases the burden on the connecting shaft, resulting in poor structural stability. Furthermore, the holes in the traction plate further reduce the strength of the traction plate, making it prone to damage due to the heavy weight of the crusher. Utility Model Content

[0007] The purpose of this utility model is to provide a turning mechanism for a straw crushing device for a harvester, so as to solve the technical problems mentioned in the background art.

[0008] To achieve the above objectives, the specific technical solution of this utility model is as follows: A turning mechanism for a harvester straw crushing device includes a harvester threshing chamber and a straw crushing device. Supports are fixedly connected to both side walls of the harvester threshing chamber. An L-shaped opening is provided below the side of the support away from the harvester threshing chamber. Side plates are provided on the inner walls of the top two sides of the L-shaped opening. A connecting shaft is rotatably connected between the two side plates via bearings. The top two sides of the straw crushing device are fixedly connected to the connecting shaft via connecting arms. Two fixed seats, distributed vertically and fixedly connected to the side walls of the support, are provided on both end side walls of the straw crushing device. A rotating shaft is rotatably connected to the surface of the side plates via bearings. A traction plate is sleeved on the end of the rotating shaft, and the rotating shaft is connected to the connecting shaft via a transmission assembly. A rope is provided at the end of the traction plate. A winch is provided at the bottom of the side wall of the support, and the end of the rope is wound inside the winch.

[0009] Preferably, the connecting arm has an L-shaped structure.

[0010] Preferably, the transmission assembly includes a first sprocket, a second sprocket, and an auxiliary wheel. The first sprocket and the second sprocket are respectively sleeved on the connecting shaft and the rotating shaft. The auxiliary wheel is rotatably connected to the surface of the side plate through a rotating shaft. The first sprocket and the second sprocket are connected by a chain. The side wall of the auxiliary wheel is in contact with the back of the chain.

[0011] Preferably, the end of the fixed base is provided with a rotating shaft, and the rotating shaft is rotatably connected to a protrusion, which is fixedly connected to the side wall of the straw crushing device.

[0012] Preferably, the surface of the fixing base is provided with two through holes, and the side wall of the bracket is provided with fixing holes that correspond one-to-one with the through holes. The through holes and fixing holes are fixedly connected by bolts.

[0013] Preferably, the traction plate is half of an octagon.

[0014] Preferably, the bracket is fixedly connected to the side wall of the threshing chamber of the harvester by a plurality of bolts.

[0015] Preferably, the side wall of the support is provided with fixed pulleys distributed corresponding to the rope, and the rope passes around the fixed pulleys and connects to the winch.

[0016] The flipping mechanism of the straw crushing device for a harvester according to this utility model has the following advantages: 1. This utility model uses a transmission component to facilitate the transition, so that the traction plate and the straw crushing device no longer rotate coaxially, which greatly increases the structural stability. By setting the shape of the traction plate to half of an octagon and setting no holes in the traction plate, the strength of the traction plate is greatly guaranteed.

[0017] 2. This utility model provides a straw crushing device that is fixedly connected to the bracket via a fixed base and bolts, making it easy to open the straw crushing device and thus facilitating its maintenance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Front view; Figure 3This is a schematic diagram of the transmission component in this utility model; Figure 4 This is a schematic diagram of the flipping structure of the straw crushing device in this utility model.

[0020] The markings in the diagram are as follows: 1. Harvester threshing chamber; 2. Straw crushing device; 3. Support frame; 4. Side plate; 5. Connecting shaft; 6. Connecting arm; 7. Rotating shaft; 8. Traction plate; 9. Transmission assembly; 10. Winch; 11. Fixed pulley; 12. Rope; 13. Fixed base; 14. Rotating shaft; 15. First sprocket; 16. Second sprocket; 17. Auxiliary wheel; 18. Chain. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0022] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device 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 the embodiments of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a communication 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. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0025] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0026] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of the flipping mechanism of a straw crushing device for a harvester.

[0027] like Figure 1-4 As shown, the present invention discloses a flipping mechanism for a harvester straw crushing device, comprising a harvester threshing chamber 1 and a straw crushing device 2. Supports 3 are fixedly connected to both side walls of the harvester threshing chamber 1, and the supports 3 are fixedly connected to the side walls of the harvester threshing chamber 1 by multiple bolts. An L-shaped opening is provided on the lower side of the support 3 away from the harvester threshing chamber 1. Side plates 4 are provided on the inner walls of the top ends of both sides of the L-shaped opening. A connecting shaft 5 is rotatably connected between the two side plates 4 via bearings. The top ends of the straw crushing device 2 are fixedly connected to the connecting shaft 5 via connecting arms 6. The connecting arms 6 have an L-shaped structure. With the connecting arms 6, when the connecting shaft 5 rotates, it will drive the connecting arms 6 to rotate around the axis of the connecting shaft 5, thereby causing the connecting arms 6 to drive the straw crushing device 2 to rotate around the axis of the connecting shaft 5. This prevents the traction plate 8 and the straw crushing device 2 from rotating coaxially, increasing the stability of the structure.

[0028] The straw crushing device 2 has two vertically distributed fixing seats 13 on both end side walls, which can be fixedly connected to the side walls of the support 3. A rotating shaft 14 is provided at the end of each fixing seat 13, and a protrusion is rotatably connected to the rotating shaft 14. The protrusion is fixedly connected to the side wall of the straw crushing device 2. This rotatable connection between the fixing seats 13 and the side walls of the straw crushing device 2 facilitates angle adjustment of the fixing seats 13. Two through holes are provided on the surface of each fixing seat 13, and corresponding fixing holes are provided on the side walls of the support 3. The through holes and fixing holes are fixedly connected by bolts. This connection between the straw crushing device 2 and the support 3 via the fixing seats 13 and bolts facilitates opening the straw crushing device 2 for maintenance.

[0029] A rotating shaft 7 is rotatably connected to the surface of the side plate 4 via a bearing. A traction plate 8 is fitted onto the end of the rotating shaft 7. The traction plate 8 is half of an octagon. No opening is needed on the surface of the traction plate 8, ensuring the overall strength of the traction plate 8. Furthermore, by using half of an octagon for the traction plate 8, material is saved. To limit the movement of the rope 12, an arc-shaped groove (not shown) can be provided on the side of the traction plate 8, and the rope 12 is distributed along the arc-shaped groove. The rotating shaft 7 and the connecting shaft 5 are connected by a transmission assembly 9, which includes a first sprocket 15, a second sprocket 16, and an auxiliary wheel 17. The first sprocket 15 and the second sprocket 16 are respectively sleeved on the connecting shaft 5 and the rotating shaft 7. The auxiliary wheel 17 is rotatably connected to the surface of the side plate 4 via a rotating shaft, and the first sprocket 15 and the second sprocket 16 are connected by a chain 18. The side wall of the auxiliary wheel 17 contacts the back of the chain 18. Through the cooperation between the first sprocket 15, the second sprocket 16, the auxiliary wheel 17, and the chain 18, when the drive winch 10 winds the rope 12, the rope 12 will be pulled. The traction plate 8 rotates around the axis of the rotating shaft 7, causing the rotating shaft 7 to rotate. This, in turn, causes the second sprocket 16 to rotate. Under the action of the chain 18, the chain 18 drives the first sprocket 15 to rotate, which in turn drives the connecting shaft 5 to rotate. This causes the connecting shaft 5 to drive the connecting arm 6 to rotate around the axis of the connecting shaft 5. Consequently, the connecting arm 6 drives the straw crushing device 2 to rotate around the axis of the connecting shaft 5. This prevents the traction plate 8 and the straw crushing device 2 from rotating coaxially, increasing the stability of the structure.

[0030] A rope 12 is provided at the end of the traction plate 8, and a winch 10 is provided at the bottom of the side wall of the support 3. The end of the rope 12 is wound inside the winch 10. Fixed pulleys 11, corresponding to the rope 12, are provided on the side wall of the support 3. The rope 12 passes around the fixed pulleys 11 and connects to the winch 10. The winch 10 is either electric or manual. The winch 10 is readily available on the market in the prior art. It is located at a low position outside the outlet of the threshing chamber, so that it can be easily operated by hand.

[0031] The harvester is a commercially available harvester, including a threshing chamber 1. A straw crushing device 2 is provided at the outlet of the threshing chamber 1. A tilting mechanism of this invention is provided between the straw crushing device 2 and the threshing chamber 1. When needed, the straw crushing device 2 can be lifted, for example, when straw crushing is not required during harvesting, or during transportation. Lifting the straw crushing device 2 frees up space below it, making the length and height of that part suitable for truck transportation.

[0032] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A turning mechanism for a straw crushing device of a harvester, characterized in that: The device includes a harvester threshing chamber (1) and a straw crushing device (2). Supports (3) are fixedly connected to both sides of the harvester threshing chamber (1). An L-shaped opening is provided below the support (3) on the side away from the harvester threshing chamber (1). Side plates (4) are provided on the inner walls of the top of both sides of the L-shaped opening. A connecting shaft (5) is rotatably connected between the two side plates (4) via bearings. Both sides of the top of the straw crushing device (2) are fixedly connected to the connecting shaft (5) via connecting arms (6). The straw crushing device (2) has two ends... Each side wall is provided with two fixed seats (13) that are distributed vertically and can be fixedly connected to the side wall of the bracket (3). The surface of the side plate (4) is rotatably connected to a rotating shaft (7) through a bearing. The end of the rotating shaft (7) is fitted with a traction plate (8), and the rotating shaft (7) is connected to the connecting shaft (5) through a transmission assembly (9). The end of the traction plate (8) is provided with a rope (12). The bottom of the side wall of the bracket (3) is provided with a winch (10), and the end of the rope (12) is wound inside the winch (10).

2. The turning mechanism of a straw crushing device for a harvester according to claim 1, characterized in that: The connecting arm (6) has an L-shaped structure.

3. The turning mechanism of a harvester straw crushing device according to claim 1, characterized in that: The transmission assembly (9) includes a first sprocket (15), a second sprocket (16), and an auxiliary wheel (17). The first sprocket (15) and the second sprocket (16) are respectively sleeved on the connecting shaft (5) and the rotating shaft (7). The auxiliary wheel (17) is rotatably connected to the surface of the side plate (4) through a rotating shaft. The first sprocket (15) and the second sprocket (16) are connected by a chain (18). The side wall of the auxiliary wheel (17) is in contact with the back of the chain (18).

4. The turning mechanism of a straw crushing device for a harvester according to claim 1, characterized in that: The end of the fixed seat (13) is provided with a rotating shaft (14), and the rotating shaft (14) is rotatably connected to a protrusion, which is fixedly connected to the side wall of the straw crushing device (2).

5. The turning mechanism of a straw crushing device for a harvester according to claim 1, characterized in that: The surface of the fixed base (13) is provided with two through holes, and the side wall of the bracket (3) is provided with fixed holes that correspond one-to-one with the through holes. The through holes and the fixed holes are fixedly connected by bolts.

6. The turning mechanism of a straw crushing device for a harvester according to claim 1, characterized in that: The traction plate (8) is half of an octagon.

7. The flipping mechanism of a straw crushing device for a harvester according to claim 1, characterized in that: The bracket (3) is fixedly connected to the side wall of the threshing chamber (1) of the harvester by multiple bolts.

8. The turning mechanism of a straw crushing device for a harvester according to claim 1, characterized in that: The side wall of the support (3) is provided with fixed pulleys (11) corresponding to the rope (12), and the rope (12) passes around the fixed pulleys (11) and is connected to the winch (10).

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