Transmission idle gear device for bundling machine

Abstract

The utility model belongs to the technical field of agricultural machinery, and discloses a transmission idle gear device for a bundling machine, which comprises an idle gear component, the idle gear component is arranged in a gear box and meshed with a transmission gear component, the idle gear component comprises a gear shaft, one end face of the gear shaft is provided with a countersunk threaded hole, and the other end face of the gear shaft is provided with a nut. The end face, provided with the countersunk threaded hole, of the gear shaft is inserted into the bearing sealing cover, the gear shaft and the bearing sealing cover are fixedly connected through a bolt, a gasket assembly is arranged at the matching position of the bolt and the bearing sealing cover, two bearings are adjacently arranged on the gear shaft in a sleeving mode, a clamping spring is arranged between the two bearings, and a transmission idle gear is arranged on the two bearings in a sleeving mode. A first sealing ring is arranged at the matching position of the gear shaft and the gear box, and a second sealing ring is arranged at the matching position of the bearing sealing cover and the gear box. The idle gear system is simple in structure, the stability of the idle gear system can be improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and specifically relates to a transmission idler wheel device for a baler. Background Art

[0002] A baler is a machine used for binding materials such as crop straws and forages. The gearbox of the baler is a key component, which is responsible for transmitting and regulating power to ensure the coordinated operation of each component of the baler. The gearbox includes transmission gears and idler wheels, and both of them work together to complete the work of the gearbox.

[0003] In the prior art, the idler wheel system in the gearbox is often fixed to the gear shaft by bolts on the gear shaft. This connection method will increase the pressure on the idler wheel system, reduce the stability of the idler wheel system, and damage the service life of the gear shaft. Summary of the Utility Model

[0004] The main technical problem to be solved by the utility model is to provide a transmission idler wheel device for a baler to improve the stability and service life of the idler wheel system.

[0005] To solve the above technical problem, the utility model provides the following technical solution:

[0006] A transmission idler wheel device for a baler includes an idler wheel assembly. The idler wheel assembly is arranged in the gearbox and meshes with the transmission gear assembly. The idler wheel assembly includes a gear shaft. A countersunk threaded hole is provided on one end face of the gear shaft. The end face of the gear shaft with the countersunk threaded hole is inserted into a bearing cover. The gear shaft and the bearing cover are fixedly connected by bolts. A washer assembly is arranged at the mating part of the bolt and the bearing cover. Two bearings are sleeved adjacent to each other on the gear shaft. A circlip is arranged between the two bearings. A transmission idler wheel is sleeved on the two bearings. A first sealing ring is arranged at the mating part of the gear shaft and the gearbox. A second sealing ring is arranged at the mating part of the bearing cover and the gearbox.

[0007] The following is a further optimization of the above technical solution by the utility model:

[0008] The gear shaft includes a retaining disc. A first shaft column is arranged on one side surface of the retaining disc. A second shaft column is arranged on one side surface of the first shaft column. The projected area of the side surface of the first shaft column is smaller than the projected area of the side surface of the retaining disc. The projected area of the side surface of the second shaft column is smaller than the projected area of the side surface of the first shaft column.

[0009] Further optimization: A countersunk threaded hole is provided on one side surface of the second shaft column. The depth of the countersunk threaded hole is smaller than the length of the second shaft column.

[0010] Further optimization: An internal thread is provided on the inner surface of the countersunk threaded hole. The inner diameter of the countersunk threaded hole is the same as the diameter of the bolt, and the internal thread of the countersunk threaded hole is engaged with the thread of the bolt.

[0011] Further optimization: The bearing cover includes a first cylinder. A second cylinder is provided on one side surface of the first cylinder. A counterbore is formed on one side surface of the second cylinder. A first washer is arranged in the counterbore. The inner diameter of the counterbore is the same as the outer diameter of the second shaft column and the depth of the counterbore is less than the length of the second shaft column.

[0012] Further optimization: A threaded hole is formed on one end surface of the first cylinder. The threaded hole penetrates through the first cylinder and communicates with the counterbore of the second cylinder. A bolt is arranged in the threaded hole.

[0013] Further optimization: The first sealing ring is sleeved on the first shaft column and is in close contact with the retaining disc. The second sealing ring is sleeved on the second cylinder and is in close contact with the first cylinder.

[0014] Further optimization: The washer assembly includes a third sealing ring closely attached to the side surface of the first cylinder and a second washer located between the third sealing ring and the bolt head. The inner diameters of the third sealing ring and the second washer are the same as the inner diameter of the threaded hole.

[0015] Further optimization: A protrusion is further provided on the other side surface of the retaining disc. The surface of the protrusion is polygonal.

[0016] The utility model adopts the above technical solutions, with ingenious concept and reasonable structure. By arranging the circlip, the service life of the bearing can be effectively improved. The arrangement of multiple sealing washers can effectively avoid the leakage of lubricating oil. And by opening holes on the gear shaft and through the cooperation of the bolt and the bearing cover, the stability of the idler wheel system can be improved and the service life can be extended.

[0017] The following further describes the utility model in conjunction with the drawings and embodiments. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 is a side view of the overall structure of the utility model;

[0020] Figure 3 is Figure 2 the sectional view at A in

[0021] Figure 4 is a schematic diagram of the structure of the conclusion component in the embodiment of the utility model;

[0022] Figure 5 is Figure 4 the sectional view at B in

[0023] In the figure: 1 - intermediate wheel assembly; 11 - gear shaft; 111 - retaining disc; 112 - first shaft column; 113 - second shaft column; 114 - protrusion; 12 - countersunk threaded hole; 13 - bearing cover; 131 - first cylinder; 132 - second cylinder; 133 - threaded hole; 14 - bolt; 15 - bearing; 16 - transmission intermediate wheel; 17 - circlip; 2 - gearbox; 3 - transmission gear assembly; 41 - first sealing ring; 42 - first washer; 43 - second sealing ring; 44 - third sealing ring; 45 - second washer. Detailed implementation mode

[0024] As Figures 1-5 Shown: A transmission intermediate wheel device for a baler, including an intermediate wheel assembly 1. The intermediate wheel assembly 1 is arranged in a gearbox 2 and meshes with a transmission gear assembly 3. The intermediate wheel assembly 1 includes a gear shaft 11. A countersunk threaded hole 12 is opened on one end face of the gear shaft 11. The end face of the gear shaft 11 with the countersunk threaded hole 12 is inserted into a bearing cover 13. The gear shaft 11 and the bearing cover 13 are fixedly connected by a bolt 14. A washer assembly is arranged at the mating part of the bolt 14 and the bearing cover 13. Two bearings 15 are sleeved adjacent to each other on the gear shaft 11. A circlip 17 is arranged between the two bearings 15. A transmission intermediate wheel 16 is sleeved on the two bearings 15. A first sealing ring 41 is arranged at the mating part of the gear shaft 11 and the gearbox 2. A second sealing ring 43 is arranged at the mating part of the bearing cover 13 and the gearbox 2.

[0025] The gear shaft 11 includes a retaining disc 111. A first shaft column 112 is arranged on one side surface of the retaining disc 111. A second shaft column 113 is arranged on one side surface of the first shaft column 112. The projected area of the side surface of the first shaft column 112 is smaller than the projected area of the side surface of the retaining disc 111. The projected area of the side surface of the second shaft column 113 is smaller than the projected area of the side surface of the first shaft column 112.

[0026] A countersunk threaded hole 12 is opened on one side surface of the second shaft column 113. The depth of the countersunk threaded hole 12 is smaller than the length of the second shaft column 113.

[0027] Internal threads are arranged on the inner surface of the countersunk threaded hole 12. The inner diameter of the countersunk threaded hole 12 is the same as the diameter of the bolt 14. The internal threads of the countersunk threaded hole 12 are matched with the threads of the bolt 14.

[0028] The bearing cover 13 includes a first cylinder 131. A second cylinder 132 is arranged on one side surface of the first cylinder 131. A counterbore is opened on one side surface of the second cylinder 132. A first washer 42 is arranged in the counterbore. The inner diameter of the counterbore is the same as the outer diameter of the second shaft column 113 and the depth of the counterbore is smaller than the length of the second shaft column 113.

[0029] One end face of the first cylinder 131 is provided with a threaded hole 133, the threaded hole 133 penetrates through the first cylinder 131 and communicates with the counterbore of the second cylinder 132, and a bolt 14 is arranged in the threaded hole 133.

[0030] The first sealing ring 41 is sleeved on the first shaft column 112 and abuts against the retaining disc 111, and the second sealing ring 43 is sleeved on the second cylinder 132 and abuts against the first cylinder 131.

[0031] The washer assembly includes a third sealing ring 44 that abuts against the side surface of the first cylinder 131 and a second washer 45 that is located between the third sealing ring 44 and the bolt head of the bolt 14. The inner diameters of the third sealing ring 44 and the second washer 45 are the same as the inner diameter of the threaded hole 133.

[0032] Another side surface of the retaining disc 111 is further provided with a protrusion 114, and the surface of the protrusion 114 is polygonal.

[0033] During use, the idler gear assembly 1 plays a transmission role for the transmission gear assembly 3. The first sealing ring 41, the second sealing ring 43 and the third sealing ring 44 play a sealing role to prevent the lubricating oil in the gearbox 2 from leaking. The first washer 42 and the second washer 45 provide an initial pre-tightening force to improve the fastening of the sealing of the idler gear assembly 1.

[0034] For those of ordinary skill in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions and variations made to the embodiments still fall within the protection scope of the present invention.

Claims

1. A driving idler wheel device for a baler, characterized in that: A transmission idler wheel device for a baler, comprising an idler wheel assembly (1). The idler wheel assembly (1) is arranged in a gearbox (2) and meshes with a transmission gear assembly (3). The idler wheel assembly (1) includes a gear shaft (11). A countersunk threaded hole (12) is formed on one end face of the gear shaft (11). The end face of the gear shaft (11) with the countersunk threaded hole (12) is inserted into a bearing cover (13). The gear shaft (11) and the bearing cover (13) are fixedly connected by a bolt (14). A washer assembly is arranged at the mating part of the bolt (14) and the bearing cover (13). Two bearings (15) are sleeved adjacent to each other on the gear shaft (11). A snap ring (17) is arranged between the two bearings (15). A transmission idler wheel (16) is sleeved on the two bearings (15). A first sealing ring (41) is arranged at the mating part of the gear shaft (11) and the gearbox (2). A second sealing ring (43) is arranged at the mating part of the bearing cover (13) and the gearbox (2).

2. The drive idler wheel device for a baler according to claim 1, characterized in that: The gear shaft (11) includes a retaining disc (111). A first shaft column (112) is arranged on one side surface of the retaining disc (111). A second shaft column (113) is arranged on one side surface of the first shaft column (112). The projected area of the side surface of the first shaft column (112) is smaller than the projected area of the side surface of the retaining disc (111). The projected area of the side surface of the second shaft column (113) is smaller than the projected area of the side surface of the first shaft column (112).

3. The drive idler wheel device for a baler according to claim 2, characterized in that: A countersunk threaded hole (12) is formed on one side surface of the second shaft column (113). The depth of the countersunk threaded hole (12) is smaller than the length of the second shaft column (113).

4. The drive idler wheel device for a baler according to claim 3, wherein: Internal threads are arranged on the inner surface of the countersunk threaded hole (12). The inner diameter of the countersunk threaded hole (12) is the same as the diameter of the bolt (14). The internal threads of the countersunk threaded hole (12) are matched with the threads of the bolt (14).

5. A transmission idler wheel device for a baler according to claim 4, characterized in that: The bearing cover (13) includes a first cylinder body (131). A second cylinder body (132) is arranged on one side surface of the first cylinder body (131). A counterbore is formed on one side surface of the second cylinder body (132). A first washer (42) is arranged in the counterbore. The inner diameter of the counterbore is the same as the outer diameter of the second shaft column (113) and the depth of the counterbore is smaller than the length of the second shaft column (113).

6. A transmission idler wheel device for a baler according to claim 5, characterized in that: A threaded hole (133) is formed on one end face of the first cylinder body (131). The threaded hole (133) penetrates through the first cylinder body (131) and communicates with the counterbore of the second cylinder body (132). A bolt (14) is arranged in the threaded hole (133).

7. A drive idler wheel device for a baler according to claim 6, characterized in that: The first sealing ring (41) is sleeved on the first shaft column (112) and is close to the retaining disc (111). The second sealing ring (43) is sleeved on the second cylinder body (132) and is close to the first cylinder body (131).

8. A transmission idler wheel device for a baler according to claim 7, characterized in that: The washer assembly includes a third sealing ring (44) close to the side surface of the first cylinder body (131) and a second washer (45) located between the third sealing ring (44) and the bolt head of the bolt (14). The inner diameters of the third sealing ring (44) and the second washer (45) are the same as the inner diameter of the threaded hole (133).

9. The drive idler wheel device for a baler according to claim 8, characterized in that: A protrusion (114) is further arranged on the other side surface of the retaining disc (111). The surface of the protrusion (114) is polygonal.

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