Silage maize harvester power output device with hydraulic clutch mechanism

Abstract

The utility model discloses a silage maize harvester power output device with a hydraulic clutch mechanism, which comprises the hydraulic clutch mechanism, a belt pulley and a power output shaft, the belt pulley is rotatably connected onto the power output shaft, the hydraulic clutch mechanism comprises a friction disc and an actuating mechanism, the friction disc is slidably connected onto the power output shaft, and the actuating mechanism is connected onto the friction disc. And the executing mechanism is used for driving the friction disc to move in the axial direction of the power output shaft to be combined with or separated from the belt pulley.

Description

TECHNICAL FIELD

[0001] The utility model relates to a silage machine power output device with a hydraulic clutch mechanism. BACKGROUND

[0002] At present, the power transmission of domestic harvesting machinery is mostly realized through a belt transmission mode, and a belt clutch device with a compression wheel is arranged between a power output shaft and an input shaft of a working part. The size of the tightening force of the compression wheel on the belts of the two shafts is adjusted through the device to realize the clutching of the two shafts. The clutching device is composed of an operation support assembly, an oil cylinder, a tension spring, a compression wheel, a belt guard and other components. The clutching device and the belt transmission system have a large volume in the machine body, the structure is scattered, and the weight of the clutching device accounts for a large proportion of the whole machine. The noise generated by the friction between the belt and the belt wheel is large at the moment of belt tensioning, and the belt is seriously heated. The belt needs to be replaced frequently, and the belt transmission also has the phenomenon of slipping, which results in low transmission efficiency and utilization rate of engine output power. SUMMARY

[0003] The utility model aims at solving the above technical problems, and provides a silage machine power output device with a hydraulic clutch mechanism.

[0004] A silage machine power output device with a hydraulic clutch mechanism, comprising a hydraulic clutch mechanism, a belt wheel and a power output shaft, wherein the belt wheel is rotationally connected to the power output shaft, the hydraulic clutch mechanism comprises a friction disc and an actuating mechanism, the friction disc is slidingly connected to the power output shaft, and the rotational freedom of the friction disc is limited by the power output shaft, and the actuating mechanism is used for driving the friction disc to move axially along the power output shaft to combine with or separate from the belt wheel.

[0005] Further, the actuating mechanism comprises a hydraulic pushing mechanism and a reset mechanism, the hydraulic pushing mechanism comprises a clutch housing and a piston, the clutch housing is a bottomless structure, the bottom edge of the clutch housing is fixedly connected to the belt wheel, and the internal space of the clutch housing forms a closed chamber with the surface of the belt wheel, the chamber comprises an installation cavity and an oil cavity connected to each other, the friction disc and a compression disc are arranged in the installation cavity, the compression disc is slidingly connected to the installation cavity, and the piston is slidingly connected to the oil cavity, an oil inlet hole is arranged at the bottom of the oil cavity, a rotary joint is arranged at the oil inlet hole, and the rotary joint is connected to a hydraulic reversing valve.

[0006] Further, the reset mechanism comprises a plurality of guide columns and springs, the guide column comprises a column body and a head, one end of the column body is fixedly connected to the compression disc through the bottom of the clutch housing, the other end of the column body is fixedly connected to the head, the spring is sleeved outside the column body, and the two ends of the spring are respectively abutted against the head and the surface of the clutch housing.

[0007] Further, the power output shaft and the friction disc are connected through a spline.

[0008] Further, the clutch housing and the pulley are connected through bolts.

[0009] Further, the power output shaft is connected with the engine through a coupling.

[0010] Further, the coupling is an elastic coupling.

[0011] Further, a sealing ring is arranged between the inner wall of the oil chamber and the piston.

[0012] Beneficial effects: compared with the prior art, the silage machine power output device has the following advantages:

[0013] The hydraulic mechanism is used for controlling the clutch state of the belt, and the operation is simple and flexible. The belt is always in the combined state, and manual adjustment is not required, so that noise and heating generated by the friction between the belt and the pulley during instantaneous tensioning of the belt are avoided. The elastic coupling is designed between the engine flywheel and the power output shaft to prevent the impact and damage of the large torque of the engine starting moment on the power output device. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a kind of silage machine power output device with hydraulic clutch mechanism schematic diagram;

[0015] In the figure, 1, power output shaft, 2, elastic coupling, 3, pulley, 4, friction disc, 5, pressure plate, 6, guide column, 7, spring, 8, clutch housing, 9, rotary joint, 10, piston. DETAILED DESCRIPTION

[0016] In order to deepen the understanding of the utility model, the utility model will be further described below in combination with examples and drawings, and the examples are only used to explain the utility model, and do not constitute the limitation of the protection scope of the utility model.

[0017] As Figure 1 shown, power output shaft 1, elastic coupling 2, pulley 3, friction disc 4, pressure plate 5, guide column 6, spring 7, clutch housing 8, rotary joint 9, piston 10;

[0018] A kind of silage machine power output device with hydraulic clutch mechanism, including hydraulic clutch mechanism, pulley 3, power output shaft 1, the pulley 3 of the described power output shaft 1 is rotatably connected, the hydraulic clutch mechanism includes friction disc 4, actuating mechanism, the friction disc 4 of the described friction disc 4 is slidably connected on power output shaft 1, and its rotational degree of freedom is limited by power output shaft 1, and the actuating mechanism is used to drive friction disc 4 and move along power output shaft 1 axial and combine or separate with pulley 3.

[0019] In the present embodiment, the actuating mechanism comprises a hydraulic pushing mechanism and a reset mechanism, the hydraulic pushing mechanism comprises a clutch housing 8, a piston 10, the clutch housing 8 is a bottomless structure, the bottom edge of which is fixedly connected with the belt pulley 3, and the inner space of which forms a closed cavity with the surface of the belt pulley 3, the cavity comprises a mounting cavity and an oil cavity connected with each other, the mounting cavity is provided with a friction disc 4 and a pressure disc 5, the friction disc 4 is located between the belt pulley 3 and the pressure disc 5, the pressure disc 5 is slidingly connected in the mounting cavity, the oil cavity is slidingly connected with the piston 10, and the bottom of the oil cavity is provided with an oil inlet hole, a rotary joint 9 is arranged at the oil inlet hole, and the rotary joint 9 is connected with a hydraulic reversing valve.

[0020] In the present embodiment, the reset mechanism comprises a plurality of guide columns 6 and springs 7, the guide column 6 comprises a column body and a head, one end of the column body is fixedly connected with the pressure disc 5 through the bottom of the clutch housing 8, and the other end of the column body is fixedly connected with the head, the spring 7 is sleeved outside the column body, and the two ends of the spring 7 are respectively abutted with the head and the surface of the clutch housing 8.

[0021] In the present embodiment, the power output shaft 1 and the friction disc 4 are connected through a spline.

[0022] In the present embodiment, the clutch housing 8 and the belt pulley 3 are connected through bolts.

[0023] In the present embodiment, the power output shaft 1 is connected with the engine through a coupling.

[0024] In the present embodiment, the coupling is an elastic coupling 2.

[0025] In the present embodiment, a sealing ring is arranged between the inner wall of the oil cavity and the piston 10.

[0026] Usage: the engine works to drive the power output shaft 1 to rotate, thereby driving the friction disc 4 to rotate, the hydraulic oil is made to enter the oil cavity by switching the hydraulic reversing valve, the piston 10 pushes the pressure disc 5 to move forward, then the pressure disc 5 pushes the friction disc 4 to be connected with the surface of the belt pulley 3, the belt pulley 3 is driven to rotate through the friction force, the hydraulic oil is not supplied to the oil cavity again by switching the hydraulic reversing valve again, the piston 10 loses the pushing force, and the pressure disc 5 is reset under the action of the spring 7, and the friction disc 4 is separated from the belt pulley 3.

[0027] The above only describes preferred embodiments of the present utility model, and is not used to limit the present utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A power output device for a silage harvester with a hydraulic clutch mechanism, characterized in that, The device includes a hydraulic clutch mechanism, a pulley, and a power output shaft. The pulley is rotatably connected to the power output shaft. The hydraulic clutch mechanism includes a friction disc and an actuator. The friction disc is slidably connected to the power output shaft, and its rotational freedom is restricted by the power output shaft. The actuator is used to drive the friction disc to move axially along the power output shaft to engage or disengage from the pulley.

2. The power output device for a silage harvester with a hydraulic clutch mechanism according to claim 1, characterized in that, The actuator includes a hydraulic actuation mechanism and a reset mechanism. The hydraulic actuation mechanism includes a clutch housing and a piston. The clutch housing is a bottomless structure, with its bottom edge fixedly connected to a pulley. Its internal space forms a closed chamber with the surface of the pulley. The chamber includes a connected mounting chamber and an oil chamber. A friction disc and a pressure disc are provided in the mounting chamber. The friction disc is located between the pulley and the pressure disc. The pressure disc is slidably connected in the mounting chamber. A piston is slidably connected in the oil chamber. An oil inlet is provided at the bottom of the oil chamber. A rotary joint is provided at the oil inlet. The rotary joint is connected to a hydraulic directional valve.

3. A power output device for a silage harvester with a hydraulic clutch mechanism according to claim 2, characterized in that, The reset mechanism includes multiple guide posts and springs. Each guide post includes a column body and a head. One end of the column body is fixedly connected to the bottom of the clutch housing and the pressure plate. The other end of the column body is fixedly connected to the head. The spring is sleeved on the outside of the column body, and both ends of the spring abut against the head and the surface of the clutch housing, respectively.

4. A power output device for a silage harvester with a hydraulic clutch mechanism according to claim 1, characterized in that, The power output shaft and the friction disc are connected by a spline.

5. A power output device for a silage harvester with a hydraulic clutch mechanism according to claim 2, characterized in that, The clutch housing and the pulley are connected by bolts.

6. A power output device for a silage harvester with a hydraulic clutch mechanism according to claim 1, characterized in that, The power output shaft is connected to the engine via a coupling.

7. A power output device for a silage harvester with a hydraulic clutch mechanism according to claim 6, characterized in that, The coupling is a flexible coupling.

8. A power output device for a silage harvester with a hydraulic clutch mechanism according to claim 2, characterized in that, A sealing ring is provided between the inner wall of the oil chamber and the piston.

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