Agricultural machine transmission

Abstract

This utility model relates to the field of agricultural machinery power output technology, and discloses a transmission device for an agricultural work machine, including a power unit and a transmission housing. The power unit is drively connected to the transmission housing. A clutch unit, supported by a power shaft and used to connect or disconnect power transmission, is disposed within the transmission housing. A maintenance port for maintaining the clutch unit is provided on the transmission housing, located on the radial projection side of the clutch unit and / or the axial projection side opposite to the power unit. This facilitates the inspection and maintenance of the clutch unit, allowing for quick disassembly, replacement, and installation.

Description

Technical Field

[0001] This utility model relates to the field of power output technology for agricultural machinery, and specifically to a transmission device for an agricultural work machine. Background Technology

[0002] The transmission device of agricultural machinery is one of the core components of agricultural machinery. Its function is to efficiently and reliably transmit the power generated by the engine or power source to the working parts (such as rotary tillers, harvesters, seeders, etc.), which directly affects the working efficiency, stability and service life of the machinery.

[0003] Chinese patent document CN202183950U discloses a transmission device for a micro-tiller, including an engine and a transmission box. A power output shaft extends from the end of the engine. The device is characterized in that: the power output shaft extends into a connecting cover, which is fixed to the end of the engine; a connecting cover is fixed to the end of the transmission box, and the transmission main shaft of the transmission box extends into the connecting cover, with the axis of the transmission main shaft and the axis of the power output shaft collinear; the connecting cover and the connecting cover are connected and fixed by bolts, forming a sealed space. A clutch is installed in this sealed space, mounted on the power output shaft and the transmission main shaft.

[0004] Existing agricultural machinery may experience wear and tear after a period of use, leading to slippage during high-load operations. Therefore, clutch maintenance is necessary after a period of use to ensure good operating performance. The existing clutch assembly structure, by adding a connecting cover and a connecting shield between the engine and the transmission, provides a small degree of convenience for clutch installation and maintenance. However, adding the connecting cover and shield increases costs. Furthermore, maintenance requires disassembling the connecting cover and shield, as well as removing the engine or transmission to perform clutch maintenance. This makes maintenance cumbersome, time-consuming, labor-intensive, and requires certain professional skills, resulting in low maintenance efficiency. Utility Model Content

[0005] This utility model provides a transmission device for agricultural machinery with a clutch that is easy to install and maintain. It includes a power unit and a transmission housing. The power unit is connected to the transmission housing. A clutch unit supported by a power shaft and used to connect or disconnect power transmission is provided in the transmission housing. The characteristic feature is that a maintenance port for maintaining the clutch unit is provided on the transmission housing. The maintenance port is located on the radial projection side of the clutch unit and / or on the axial projection side away from the power unit.

[0006] Preferably, the maintenance port is located on the radial projection side of the clutch unit. By placing the maintenance port on the transmission housing in the radial direction of the clutch unit, disassembly of the power unit and / or transmission housing can be avoided.

[0007] Preferably, the transmission housing and the power unit are arranged horizontally side by side, and the maintenance port is located on the upper part of the transmission housing.

[0008] To prevent leakage during disassembly and assembly, the clutch unit is a wet clutch, and the maintenance port is located above the lubricating oil level in the transmission housing.

[0009] To reduce the cost of replacing the clutch unit for users, the clutch unit is detachably connected to the drive shaft.

[0010] To facilitate the installation and removal of the drive shaft, a shaft maintenance port is provided on the side of the transmission housing opposite to the axial projection of the power unit, and the shaft maintenance port corresponds to the drive shaft. The shaft maintenance port is small in size, and the drive shaft can be installed and removed through the shaft maintenance port.

[0011] To facilitate the disassembly of the power shaft, a shaft disassembly and assembly part is provided on the side of the power shaft near the shaft maintenance port.

[0012] Furthermore, the shaft disassembly / reassembly part is a threaded hole on the power shaft. Disassembly and reassembly are performed using a professional puller to avoid damage to the power shaft.

[0013] Preferably, the maintenance port and the shaft maintenance port are openable and closable maintenance ports, with a cover plate at the maintenance port and an oil seal at the shaft maintenance port. When maintenance is not required, the cover plate is placed over the maintenance port, and the oil seal is inserted into the shaft maintenance port.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model directly sets up maintenance ports and / or shaft maintenance ports on the transmission housing, so that the inspection, disassembly, replacement and installation of the clutch unit and power shaft do not require disassembling the power unit or the entire transmission housing, which greatly simplifies the maintenance process and reduces the difficulty and time required for operation.

[0016] 2. The clutch unit can be disassembled and replaced independently, avoiding the need to replace the entire assembly due to clutch wear; the maintenance port design reduces the workload of disassembly and assembly, saving labor costs; at the same time, it avoids the risk of damage to other components that may be caused by complex disassembly and assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of Embodiment 1 of the transmission device for agricultural machinery of this utility model;

[0018] Figure 2 This is a schematic diagram of Embodiment 2 of the transmission device for agricultural machinery of this utility model. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The reference numerals in the accompanying drawings include: power unit 1, transmission housing 2, power shaft 3, clutch unit 4, maintenance port 5, transmission shaft 6, transmission gear 601, shaft maintenance port 7, shaft disassembly and assembly part 8, support part 9, and oil seal 10.

[0021] Example 1

[0022] like Figure 1 As shown, an agricultural machine transmission device includes a power unit 1 and a transmission housing 2. The power unit 1 is connected to the transmission housing 2. A clutch unit 4, supported by a power shaft 3 and used to connect or disconnect power transmission, is provided inside the transmission housing 2. The power shaft 3 and the clutch unit 4 are arranged parallel to each other, and the transmission shaft 6 is connected to the clutch unit 4 through a transmission gear 601. A maintenance port 5 for maintaining the clutch unit 4 is provided on the transmission housing 2. The maintenance port 5 is located on the radial projection side of the clutch unit 4. By placing the maintenance port 5 on the transmission housing 2 in the radial direction of the clutch unit 4, it is possible to avoid disassembling the power unit 1 and / or the transmission housing 2.

[0023] The transmission housing 2 and the power unit 1 are arranged horizontally side by side. The clutch unit 4 is a wet clutch. The maintenance port 5 is located above the lubricating oil level inside the transmission housing 2.

[0024] The clutch unit 4 is connected to the drive shaft 3 via a spline drive. The detachable design reduces the user's replacement cost for the clutch unit 4.

[0025] The transmission housing 2 has a shaft maintenance port 7 on the side opposite to the axial projection of the power unit 1, and the shaft maintenance port 7 corresponds to the power shaft 3. The shaft maintenance port 7 is small in size, and the power shaft 3 can be installed and removed through the shaft maintenance port 7. (Of course, only the maintenance port 5 can be provided, without the shaft maintenance port 7.)

[0026] A shaft disassembly / reassembly part 8 is provided on the power shaft 3 near the shaft maintenance port 7. The shaft disassembly / reassembly part 8 is a threaded hole on the power shaft 3. Disassembly and reassembly are performed using a professional puller to avoid damage to the power shaft 3.

[0027] The maintenance port 5 and the shaft maintenance port 7 are both openable and closable. The maintenance port 5 is provided with a cover plate (not shown in the figure), and the shaft maintenance port 7 is provided with a support part 9 for supporting the power shaft 3. An oil seal 10 is provided on one side of the support part 9. Both the support part 9 and the oil seal 10 are removable. When maintenance is not required, the cover plate is placed on the maintenance port 5, and the oil seal 10 is inserted into the shaft maintenance port 7.

[0028] Maintenance procedure summary: When maintenance of clutch unit 4 is required:

[0029] 1. Open the maintenance port 5 cover.

[0030] 2. Through the shaft maintenance port 7 (oil seal 10 needs to be removed first), use a tool (such as a puller) to act on the threaded hole (shaft disassembly part 8) at the end of the power shaft 3, pull the power shaft 3 a certain distance toward the shaft maintenance port 7, so that it is disengaged from the spline connection of the clutch unit 4.

[0031] 3. Remove the clutch unit 4 axially through the maintenance port 5.

[0032] 4. After replacing or repairing clutch unit 4, reverse the operation to install the new clutch unit 4.

[0033] 5. Using tools, push the power shaft 3 back to its original position through the shaft maintenance port 7 so that its spline re-engages with the clutch unit 4.

[0034] 6. Install oil seal 10 (ensure sealing) and cover plate (seal maintenance port 5).

[0035] Example 2

[0036] like Figure 2 As shown, a transmission device for an agricultural work machine includes a power unit 1 and a transmission housing 2. The power unit 1 is connected to the transmission housing 2. A clutch unit 4, supported by a power shaft 3 and used to connect or disconnect power transmission, is disposed inside the transmission housing 2. The power shaft 3 is arranged parallel to the clutch unit 4 and is connected to the clutch unit 4 through a transmission gear 301. A shaft maintenance port 7 is provided on the transmission housing 2 to maintain the clutch unit 4. The shaft maintenance port 7 is located on the side opposite to the axial projection of the power unit 1. The size of the shaft maintenance port 7 allows the clutch unit 4 and the power shaft 3 to be removed together. By using the shaft maintenance port 7, the disassembly of the power unit 1 and / or the transmission housing 2 can be avoided.

[0037] The transmission housing 2 and the power unit 1 are arranged horizontally side by side. The clutch unit 4 is a wet clutch. The maintenance port 5 is located above the lubricating oil level inside the transmission housing 2.

[0038] The clutch unit 4 is connected to the drive shaft 3 via a spline drive. The detachable design reduces the user's replacement cost for the clutch unit 4.

[0039] A shaft disassembly / reassembly part 8 is provided on the power shaft 3 near the shaft maintenance port 7. The shaft disassembly / reassembly part 8 is a threaded hole on the power shaft 3. Disassembly and reassembly are performed using a professional puller to avoid damage to the power shaft 3.

[0040] The shaft maintenance port 7 is an openable and closable maintenance port 5. A support portion 9 for supporting the power shaft 3 is provided at the shaft maintenance port 7. An oil seal 10 is provided on one side of the support portion 9. Both the support portion 9 and the oil seal 10 are detachable. When maintenance is not required, the oil seal 10 is inserted into the shaft maintenance port 7.

[0041] The clutch unit 4 and the power shaft 3 are removed together through the shaft maintenance port 7 for inspection and maintenance.

[0042] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A transmission device for an agricultural work machine, comprising a power unit and a transmission housing, wherein the power unit is drively connected to the transmission housing, and a clutch unit supported by a power shaft and used to connect or disconnect power transmission is disposed within the transmission housing, characterized in that: A maintenance port for maintaining the clutch unit is provided on the transmission housing. The maintenance port is located on the radial projection side of the clutch unit and / or on the axial projection side away from the power unit.

2. The transmission device for agricultural machinery according to claim 1, characterized in that: The transmission housing and the power unit are arranged horizontally side by side, and the maintenance port is located on the upper part of the transmission housing.

3. The transmission device for agricultural machinery according to claim 2, characterized in that: The clutch unit is a wet clutch, and the maintenance port is located above the lubricating oil level in the transmission housing.

4. The transmission device for agricultural machinery according to any one of claims 1-3, characterized in that: The clutch unit is detachably connected to the power shaft.

5. The transmission device for agricultural machinery according to claim 4, characterized in that: The transmission housing has a shaft maintenance port on the side opposite to the axial projection of the power unit, and the shaft maintenance port corresponds to the power shaft.

6. The transmission device for agricultural machinery according to claim 5, characterized in that: A shaft disassembly and assembly part is provided on the power shaft near the shaft maintenance port.

7. The transmission device for agricultural machinery according to claim 6, characterized in that: The shaft disassembly / reassembly part is the threaded hole on the power shaft.

8. The transmission device for agricultural machinery according to claim 7, characterized in that: The maintenance port and shaft maintenance port are openable and closable maintenance ports.

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