Transmission spiral bevel gear pair structure of wheeled tractor

Abstract

The utility model relates to a transmission spiral bevel gear pair structure of a wheeled tractor, which belongs to the technical field of agricultural engineering machinery and comprises a gear box, a spiral bevel fluted disc is arranged in the gear box, and a plurality of transmission gear shafts extending out of the gear box are arranged at the lower end of the spiral bevel fluted disc. The transmission gear shaft and the spiral conical fluted disc are in meshing transmission through spiral conical teeth, a belt wheel is arranged at the upper end of the gearbox, and a driving flange shaft connected with the belt wheel in an inserted and embedded mode in a sleeved mode is arranged between the belt wheel and the spiral conical fluted disc. The device has the characteristics of compact structure, good operation stability and long service life. The process that the belt pulley drives the spiral conical fluted disc on the driving flange shaft to drive the multiple transmission gear shafts to operate is achieved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural engineering machinery technology, specifically to a spiral bevel gear pair structure for a wheeled tractor transmission. Background Technology

[0002] Wheeled tractors are a type of tractor whose running gear is on wheels. They are further divided into rear-wheel drive and four-wheel drive. High-horsepower wheeled tractors have better traction performance and are suitable for high-speed operations on large farms when equipped with wide-width implements.

[0003] Tractors move by the power of an internal combustion engine, which, through the transmission system, gives the drive wheels a driving torque Mk. The drive wheels, having obtained the driving torque, then exert a small, backward horizontal force (tangential force) on the ground through the tire treads and tire surface. The ground exerts a horizontal reaction force Pk on the driving force, which is equal in magnitude and opposite in direction. This reaction force Pk is the driving force (also known as propulsion force) that propels the tractor forward.

[0004] The tractor moves forward when the driving force Pk is sufficient to overcome the rolling resistance of the front and rear wheels and the traction resistance of the attached implements. If the drive wheels are lifted off the ground, i.e., the driving force Pk is zero, the drive wheels will only spin in place, and the tractor will not move. Similarly, if the sum of the rolling resistance and the traction resistance is greater than the driving force Pk, the tractor will also not move. Therefore, it is evident that the movement of a wheeled tractor is achieved through the interaction between the driving torque and the ground, and the driving force must be greater than the sum of the rolling resistance and the traction resistance. Summary of the Invention

[0005] This invention primarily addresses the shortcomings of existing technologies by providing a spiral bevel gear pair structure for wheeled tractor transmissions. This structure is characterized by its compact design, good operational stability, and long service life. It enables the operation of multiple transmission gear shafts by driving a spiral bevel gear disc on the drive flange shaft via a pulley.

[0006] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions:

[0007] A spiral bevel gear pair structure for a wheeled tractor transmission includes a gearbox, a spiral bevel gear disk inside the gearbox, and a plurality of transmission gear shafts extending out of the gearbox at the lower end of the spiral bevel gear disk. The transmission gear shafts and the spiral bevel gear disk are driven by spiral bevel gear meshing. A pulley is provided at the upper end of the gearbox, and an active flange shaft that is inserted and fitted between the pulley and the spiral bevel gear disk is provided.

[0008] Preferably, the transmission gear shaft includes an output shaft, and the front end of the output shaft is provided with a driven spiral bevel gear that meshes with the spiral bevel gear disk for transmission. The driven spiral bevel gear and the output shaft are integrated into one structure.

[0009] Preferably, the output shaft has an oil injection hole at its rear end, and several oil inlet channels are provided between the oil injection hole and the gearbox.

[0010] Preferably, bearings are provided between the pulley and the gearbox, between the spiral bevel gear disc and the gearbox, and between the transmission gear shaft and the gearbox.

[0011] Preferably, the rear end of the transmission gear shaft is provided with a pressure cover that is bolted to and fixed to the gearbox. The pressure cover is pressed against the bearing and sleeved on the transmission gear shaft.

[0012] Preferably, a sealing ring is provided between the pressure cap and the transmission gear shaft, which is fitted into the transmission gear shaft.

[0013] Preferably, the upper end of the active flange shaft is provided with a connecting plate that is bolted and fixed to the pulley and the active flange shaft respectively.

[0014] This invention can achieve the following effects:

[0015] This invention provides a spiral bevel gear pair structure for a wheeled tractor transmission, which, compared with existing technologies, features a compact structure, good operational stability, and long service life. It enables the spiral bevel gear disc on the drive flange shaft to drive multiple transmission gear shafts via a pulley. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a partial structural cross-sectional view of the transmission gear shaft in this utility model.

[0018] In the diagram: 1. Gearbox; 2. Pulley; 3. Connecting disc; 4. Drive flange shaft; 5. Bearing; 6. Spiral bevel gear disc; 7. Transmission gear shaft; 8. Pressure cap; 9. Sealing ring; 10. Output shaft; 11. Oil injection hole; 12. Oil inlet channel; 13. Driven spiral bevel gear. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] Example: Figure 1 and Figure 2As shown, a spiral bevel gear pair structure for a wheeled tractor transmission includes a gearbox 1, within which a spiral bevel gear disk 6 is housed. Two symmetrically distributed transmission gear shafts 7 extend from the lower end of the spiral bevel gear disk 6 out of the gearbox 1. A pressure cap 8, bolted to the gearbox 1, is located at the rear end of each transmission gear shaft 7. The pressure cap 8 presses against a bearing 5 and is sleeved onto the transmission gear shaft 7. A sealing ring 9, which is interlocked with the transmission gear shaft 7, is provided between the pressure cap 8 and the transmission gear shaft 7. Transmission between the transmission gear shaft 7 and the spiral bevel gear disk 6 is achieved through spiral bevel gear meshing. Bearings 5 ​​are provided between the pulley 2 and the gearbox 1, between the spiral bevel gear disk 6 and the gearbox 1, and between the transmission gear shaft 7 and the gearbox 1. The transmission gear shaft 7 includes an output shaft 10, with an oil inlet 11 at its rear end. Several oil inlet channels 12 are provided between the oil inlet 11 and the gearbox 1. The output shaft 10 has a driven spiral bevel gear 13 at its front end that meshes with the spiral bevel gear disk 6. The driven spiral bevel gear 13 and the output shaft 10 are integrated. The gearbox 1 has a pulley 2 at its upper end. A drive flange shaft 4 is inserted between the pulley 2 and the spiral bevel gear disk 6. The drive flange shaft 4 is bolted to the spiral bevel gear disk 6. The upper end of the drive flange shaft 4 has a connecting plate 3 that is bolted to both the pulley 2 and the drive flange shaft 4.

[0021] In summary, this wheeled tractor transmission spiral bevel gear pair structure features a compact structure, good operational stability, and long service life. It enables the spiral bevel gear disc on the drive flange shaft to drive multiple transmission gear shafts via a pulley.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A spiral bevel gear pair structure for a wheeled tractor transmission, characterized in that: The gearbox (1) includes a spiral bevel gear disk (6) inside the gearbox (1). The lower end of the spiral bevel gear disk (6) is provided with several transmission gear shafts (7) extending out of the gearbox (1). The transmission gear shafts (7) and the spiral bevel gear disk (6) are driven by spiral bevel gear meshing. The upper end of the gearbox (1) is provided with a pulley (2). The pulley (2) and the spiral bevel gear disk (6) are provided with an active flange shaft (4) that is inserted and fitted into the pulley (2).

2. The spiral bevel gear pair structure for wheeled tractor transmission according to claim 1, characterized in that: The transmission gear shaft (7) includes an output shaft (10). The front end of the output shaft (10) is provided with a driven spiral bevel gear (13) that meshes with the spiral bevel gear disk (6). The driven spiral bevel gear (13) and the output shaft (10) are integrated.

3. The wheeled tractor transmission spiral bevel gear pair structure according to claim 2, characterized in that: The output shaft (10) has an oil injection hole (11) at its rear end, and several oil inlet channels (12) are provided between the oil injection hole (11) and the gearbox (1).

4. The spiral bevel gear pair structure for wheeled tractor transmission according to claim 1, characterized in that: Bearings (5) are provided between the pulley (2) and the gearbox (1), between the spiral bevel gear disc (6) and the gearbox (1), and between the transmission gear shaft (7) and the gearbox (1).

5. The wheeled tractor transmission spiral bevel gear pair structure according to claim 4, characterized in that: The rear end of the transmission gear shaft (7) is provided with a pressure cover (8) that is bolted to the gearbox (1). The pressure cover (8) is pressed against the bearing (5) and sleeved with the transmission gear shaft (7).

6. The wheeled tractor transmission spiral bevel gear pair structure according to claim 5, characterized in that: The pressure cap (8) and the transmission gear shaft (7) are provided with a sealing ring (9) that is fitted into the transmission gear shaft (7).

7. The wheeled tractor transmission spiral bevel gear pair structure according to claim 1, characterized in that: The upper end of the active flange shaft (4) is provided with a connecting plate (3) that is bolted to and fixed to the pulley (2) and the active flange shaft (4).

Images