Grain unloading protection device of combine harvester

Abstract

The utility model discloses a grain unloading protection device of a combine harvester, which belongs to the field of agricultural machinery equipment and comprises an auger transmission mechanism at the bottom of a granary, the auger transmission mechanism is connected with a driven chain wheel, and the driven chain wheel is connected with a main transmission chain wheel through a chain; the bearing seat is connected to a combine harvester vehicle body, a transmission shaft is rotationally connected to the bearing seat, the main transmission chain wheel is connected to one end of the transmission shaft, the other end of the transmission shaft is connected with a driven belt wheel, the driven belt wheel is connected with the main belt wheel through a belt, and the main transmission chain wheel is connected with the transmission shaft through a connecting chuck; a circular truncated cone is arranged on one side of the connecting chuck, a mounting hole is formed in the center of the main transmission chain wheel, the main transmission chain wheel is rotationally connected to the circular truncated cone through the mounting hole, an eccentric hole is formed in the connecting chuck, a connecting hole is formed in the main transmission chain wheel, and a bolt is inserted into the connecting hole and the eccentric hole at the same time. By means of the structure, a transmission belt can be protected, and abrasion of the belt is avoided.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and equipment, specifically to a grain unloading protection device for a combine harvester. Background Technology

[0002] The power of a grain silo is usually transmitted from an engine through a pulley, and then through a sprocket to the auger drive box at the bottom of the silo. However, the grain inside the silo often has problems such as excessive moisture or other malfunctions that cause the unloading system to malfunction or stop operating. This can cause the sprocket to jam, which in turn causes the slave pulley connected to the sprocket to jam. Since the main pulley is always driving the belt, the belt will be constantly rubbing against the slave pulley, causing the belt to wear out quickly.

[0003] To address the aforementioned problems, this utility model designs and manufactures a combine harvester unloading protection device to overcome the above-mentioned defects. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a combine harvester unloading protection device that can protect the transmission belt and prevent belt wear.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a combine harvester unloading protection device, including an auger transmission mechanism at the bottom of the grain bin, wherein the auger transmission mechanism is connected to a driven sprocket, and the driven sprocket is connected to a main drive sprocket via a chain;

[0006] It also includes a bearing housing, which is connected to the body of the combine harvester. A drive shaft is rotatably connected to the bearing housing. The main drive sprocket is connected to one end of the drive shaft, and a driven pulley is connected to the other end of the drive shaft. The driven pulley is connected to the main pulley via a belt, and the main pulley is connected to a rotary drive device.

[0007] The main drive sprocket is connected to the drive shaft via a connecting chuck. A frustum is provided on one side of the connecting chuck, and a mounting hole is provided at the center of the main drive sprocket. The main drive sprocket is rotatably connected to the frustum through the mounting hole. An eccentric hole is provided on the connecting chuck, and there is a gap between the eccentric hole and the center of the connecting chuck. A connecting hole is provided on the main drive sprocket, and the gap between the connecting hole and the center of the main drive sprocket is equal to the gap between the eccentric hole and the center of the connecting chuck. A bolt is inserted into both the connecting hole and the eccentric hole.

[0008] Preferably, the bolt end is provided with a nut, which can prevent the bolt from coming out of the connecting hole and the eccentric hole.

[0009] Preferably, the mounting hole of the main transmission sprocket is provided with a bearing, and the main transmission sprocket is rotationally connected with the circular table through the bearing.

[0010] Preferably, the connecting chuck is arranged between the main transmission sprocket and the bearing seat.

[0011] Preferably, the end of the circular table is provided with a gland, and the gland can limit the main transmission sprocket from being separated from the circular table.

[0012] Preferably, a pressing sprocket is arranged on the chain connected with the main transmission sprocket and the driven sprocket.

[0013] Preferably, a pressing belt pulley is arranged on the belt connected with the main belt pulley and the driven belt pulley.

[0014] The utility model has the advantages of:

[0015] 1. The rotation of the main transmission sprocket is realized by the cooperation of the bolt in the eccentric hole of the connecting chuck and the connecting hole on the main transmission sprocket. If the auger transmission box at the bottom of the grain bin is stuck or fails to cause the driven sprocket and the main transmission sprocket to be stuck, the rotation of the connecting chuck driven by the driven belt pulley through the transmission shaft will cause the bolt to break, so that the connecting chuck and the main transmission sprocket can rotate relative to each other. Since the rotation of the driven belt pulley will not stop due to the sticking of the main transmission sprocket, the belt can always rotate with the driven belt pulley and the main belt pulley, thereby avoiding the relative sliding wear of the belt.

[0016] 2. The utility model realizes the connection of the connecting chuck and the main transmission sprocket by inserting a bolt in the connecting hole and the eccentric hole, thereby ensuring the rotation of the main transmission sprocket driven by the transmission shaft through the connecting chuck. The structure is simple, and even if the bolt breaks, it is also convenient to replace.

[0017] 3. The utility model discloses that the main transmission sprocket is rotationally connected with the circular table through the bearing, thereby ensuring the smoothness of the rotation of the connecting chuck relative to the main transmission sprocket driven by the transmission shaft after the bolt breaks. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of a grain unloading protection device of a combine harvester;

[0019] Figure 2 It is a schematic view of a transmission shaft of a grain unloading protection device of a combine harvester.

[0020] In the figure: 1, grain bin; 2, auger transmission mechanism; 3, driven sprocket; 4, main transmission sprocket; 5, bearing seat; 6, driven belt pulley; 7, belt; 8, chain; 9, connecting chuck; 10, bolt; 11, pressing belt pulley; 12, transmission shaft. DETAILED DESCRIPTION

[0021] In order to facilitate those skilled in the art to understand, the utility model is further explained below in combination with the drawings.

[0022] As Figure 1 , Figure 2 shown, a kind of combine harvester unloading protection device, including the bottom of granary 1 auger drive mechanism 2, auger drive mechanism 2 is connected with from transmission sprocket 3, from transmission sprocket 3 is connected with main drive sprocket 4 by chain 8.

[0023] It further includes bearing seat 5, bearing seat 5 is connected on combine harvester car body, bearing seat 5 is rotatably connected with transmission shaft 12, main drive sprocket 4 is connected at one end of transmission shaft 12, transmission shaft 12 other end is connected with from pulley 6, from pulley 6 is connected with main pulley 7 by belt 7, main pulley 7 is connected with rotary drive device.

[0024] The utility model main drive sprocket 4 is connected with transmission shaft 12 by connecting chuck 9, one side of connecting chuck 9 is equipped with circular table, the center of main drive sprocket 4 is equipped with mounting hole, and main drive sprocket 4 is rotatably connected on circular table by mounting hole, eccentric hole is equipped on connecting chuck 9, and the interval between eccentric hole and the center of connecting chuck 9 is equipped, connecting hole is equipped on main drive sprocket 4, and the interval between connecting hole and the center of main drive sprocket 4 is equal to the interval between eccentric hole and the center of connecting chuck 9, and one bolt 10 is inserted in connecting hole and eccentric hole simultaneously.

[0025] The rotation of the utility model main drive sprocket 4 is realized by the cooperation of bolt 10 in eccentric hole on connecting chuck 9 and connecting hole on main drive sprocket 4, if auger drive box at the bottom of granary 1 is stuck or failure causes from transmission sprocket 3 and main drive sprocket 4 to be stuck, when from pulley 6 drives connecting chuck 9 to rotate by transmission shaft 12, it can cause bolt 10 to break, so that connecting chuck 9 and main drive sprocket 4 can rotate each other, since the rotation of from pulley 6 will not stop because main drive sprocket 4 is stuck, therefore, belt 7 can always rotate with from pulley 6 and main pulley 7, avoiding the relative sliding wear of belt 7.

[0026] Moreover, the connection of connecting chuck 9 and main drive sprocket 4 is realized by inserting bolt 10 in connecting hole and eccentric hole, which ensures the rotation of main drive sprocket 4 driven by connecting chuck 9 through transmission shaft 12, and the structure is simple, and even if bolt 10 breaks, it is also convenient to replace.

[0027] Further, the end of bolt 10 is equipped with nut, and the nut can limit bolt 10 from separating from connecting hole and eccentric hole.

[0028] The utility model discloses a bearing is equipped with in the mounting hole of main drive sprocket 4, and main drive sprocket 4 is rotatably connected with the circular table through the bearing, guarantees the smoothness of bolt 10 after breaking, and the relative rotation of transmission shaft 12 and connecting chuck 9 to main drive sprocket 4.

[0029] Connecting chuck 9 is preferably arranged between main drive sprocket 4 and bearing seat 5, facilitating the replacement and maintenance of main drive sprocket 4. The end of the circular table is preferably provided with a gland, which can limit the disengagement of the main drive sprocket 4 from the circular table.

[0030] In addition, the utility model is provided with a pressing sprocket on the chain 8 connected with the main drive sprocket 4 and the driven sprocket 3, ensuring the stability of the chain 8 transmission; the belt 7 connected with the main pulley 7 and the driven pulley 6 is provided with a pressing pulley 11, ensuring the stability of the belt 7 transmission.

[0031] It should be understood that the use of these embodiments is only for the purpose of illustrating the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various modifications, modifications and / or variations to the utility model, and all these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A combine harvester unloading protection device, characterized in that, Includes an auger drive mechanism (2) at the bottom of the grain silo (1), the auger drive mechanism (2) is connected to a drive sprocket (3), the drive sprocket (3) is connected to a main drive sprocket (4) via a chain (8); It also includes a bearing housing (5), which is connected to the body of the combine harvester. A drive shaft (12) is rotatably connected to the bearing housing (5). The main drive sprocket (4) is connected to one end of the drive shaft (12). The other end of the drive shaft (12) is connected to a pulley (6). The pulley (6) is connected to the main belt pulley (7) via a belt (7). The main belt pulley (7) is connected to a rotary drive device. The main drive sprocket (4) is connected to the drive shaft (12) via a connecting chuck (9). A frustum is provided on one side of the connecting chuck (9). A mounting hole is provided at the center of the main drive sprocket (4). The main drive sprocket (4) is rotatably connected to the frustum via the mounting hole. An eccentric hole is provided on the connecting chuck (9). There is a gap between the eccentric hole and the center of the connecting chuck (9). A connecting hole is provided on the main drive sprocket (4). The gap between the connecting hole and the center of the main drive sprocket (4) is equal to the gap between the eccentric hole and the center of the connecting chuck (9). A bolt (10) is inserted into both the connecting hole and the eccentric hole.

2. The combine harvester unloading protection device according to claim 1, characterized in that, The bolt (10) is provided with a nut at its end, which can prevent the bolt (10) from coming out of the connecting hole and the eccentric hole.

3. The combine harvester unloading protection device according to claim 1, characterized in that, The main drive sprocket (4) is provided with a bearing in its mounting hole, and the main drive sprocket (4) is rotatably connected to the frustum through the bearing.

4. The combine harvester unloading protection device according to claim 1, characterized in that, The connecting chuck (9) is located between the main drive sprocket (4) and the bearing seat (5).

5. The combine harvester unloading protection device according to claim 4, characterized in that, The end of the truncated cone is provided with a pressure cap, which can prevent the main drive sprocket (4) from disengaging from the truncated cone.

6. The combine harvester unloading protection device according to claim 1, characterized in that, A clamping sprocket is provided on the chain (8) connected to the main drive sprocket (4) and the drive sprocket (3).

7. The combine harvester unloading protection device according to claim 1, characterized in that, A pressure pulley (11) is provided on the belt (7) connected to the main belt (7) and the belt (7) connected to the pulley (6).

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