A hydraulic working clutch device for a harvesting machine

Abstract

A hydraulic working clutch device for a harvesting machine according to the present invention. A bidirectional oil cylinder passes through the outer ring of a self-friction plate type clutch from the inside. One end of the transmission end is connected to the bidirectional oil cylinder, and the other end is connected to one end of a swing arm. A first sensor is installed on the transmission end at the connection between the two. The other end of the swing arm is connected to a rotating shaft. A mounting seat is sleeved on the clutch shaft of the friction plate type clutch. The rotating shaft and a connecting rod mechanism are respectively installed on the mounting seat. The rotating shaft is connected to the connecting rod mechanism, and the connecting rod mechanism is connected to the pressure plate of the friction plate type clutch. A second sensor is installed on the connecting rod mechanism at the connection between the two. By changing the manual push rod to hydraulic propulsion, the stable and smooth engagement and disengagement of the friction plate type clutch are ensured, and it is ensured that the bidirectional oil cylinder does not interfere with the friction plate type clutch. Through the setting of corresponding induction devices, the automatic operation of the bidirectional oil cylinder is realized, with small operating force, reduced labor intensity of people, improved operating comfort, and reliable mechanism.

Description

Technical Field

[0001] The present invention relates to a clutch device, and in particular to a hydraulic working clutch device for a harvesting machine. Background Art

[0002] The working clutch of a harvesting machine is a clutch device for the working components of the harvesting machine, and its performance and stability directly affect the normal operation of the harvesting machine. Different from the traveling clutch, it has a large working load, a large impact, and high requirements.

[0003] There are mainly two existing working clutches for harvesting machines, namely a friction plate type clutch device and a pressure belt wheel type clutch device. Among them. The friction plate type clutch device is a mechanical combination method, which is manually combined by a connecting rod. Its advantages are stable combination and reliable structure. The disadvantages are that the operating force on people is large, the labor intensity of the operator is high, and the connecting rod structure is complex; the pressure belt wheel type clutch device is a hydraulic structure, which uses an oil cylinder to push the pressure belt wheel to press the belt for combination. Its advantages are convenient operation. The disadvantages are that the adjustment is complex during assembly, and the output belt wheel rotates continuously, consuming power and wearing the belt. Summary of the Invention

[0004] Object of the Invention: Aiming at the above problems, the object of the present invention is to provide a hydraulic working clutch device for a harvesting machine, which improves the operating comfort, reduces the load, enhances the stability, and reduces the labor intensity.

[0005] Technical Solution: A hydraulic working clutch device for a harvesting machine includes a two-way oil cylinder, a friction plate type clutch, and a transmission end head, a swing arm, a rotating shaft, a connecting rod mechanism, a mounting seat, a first sensor, a second sensor, and a third sensor arranged inside the friction plate type clutch. The two-way oil cylinder penetrates through the outer ring of the friction plate type clutch and is arranged inside it. One end of the transmission end head is connected to the two-way oil cylinder, and the other end is connected to one end of the swing arm. The first sensor and the third sensor are relatively and spaced apart at their connection part and arranged on the transmission end head. The other end of the swing arm is connected to the rotating shaft. The mounting seat is sleeved on the clutch shaft of the friction plate type clutch. The rotating shaft and the connecting rod mechanism are respectively arranged on the mounting seat. The rotating shaft is connected to the connecting rod mechanism. The connecting rod mechanism is connected to the pressure plate of the friction plate type clutch. The second sensor is arranged on the connecting rod mechanism at their connection part.

[0006] The friction plate clutch includes inner friction plates and outer friction plates. When starting the operation, the operator first manipulates the electric control handle to start the double-acting cylinder. The double-acting cylinder starts to extend when supplied with oil, driving the transmission end head to move forward. After a certain idle stroke, the transmission end head acts on the swing arm through a pin shaft. At this time, the first sensor contacts the pin shaft, pushing one end of the swing arm forward, so that the other end of the swing arm drives the rotating shaft to rotate. The rotating shaft acts on the linkage mechanism. While the linkage mechanism acts on the pressure plate, the linkage mechanism locks itself, so that the friction plate clutch is in the "engaged" state. The output pulley of the friction plate clutch drives the working components to start working. At the same time, the second sensor contacts the pressure plate to sense and sends a signal to stop the double-acting cylinder from advancing and start reverse movement. After the double-acting cylinder reversely advances a certain stroke, the first sensor separates from the pin shaft, and the first sensor sends a signal to stop the double-acting cylinder from reverse movement, thus ensuring that the double-acting cylinder does not interfere with the friction plate clutch.

[0007] When it is necessary to end the work, the operator manipulates the electric control handle to disengage, causing the double-acting cylinder to start contracting when supplied with oil. After the double-acting cylinder contracts a certain idle stroke, the third sensor contacts the pin shaft. At the same time, the pin shaft drives the swing arm to move back, and the swing arm drives the rotating shaft to move. The rotating shaft acts on the linkage mechanism, causing the linkage mechanism to move in the reverse direction, the pressure plate retracts, and the friction plate clutch is in the "disengaged" state; at this time, the swing arm of the friction plate clutch automatically rebounds, the output pulley stops moving, and at the same time the third sensor separates from the pin shaft and sends a signal to stop the double-acting cylinder from moving, and the movement ends.

[0008] Furthermore, a long hole is formed in the transmission end head, and a round hole is provided on the swing arm. The pin shaft is sequentially inserted through the long hole and the round hole to connect the transmission end head and the swing arm.

[0009] Furthermore, the first sensor is embedded in the inner wall at one end of the long hole, and the third sensor is embedded in the inner wall at the other end of the long hole.

[0010] Preferably, the diameter of the round hole is smaller than the width of the long hole.

[0011] Furthermore, one end of the transmission end head is connected to the double-acting cylinder through a nut.

[0012] Preferably, the first sensor is a pressure sensor.

[0013] Preferably, the second sensor is a pressure sensor.

[0014] Preferably, the third sensor is a pressure sensor.

[0015] Furthermore, the double-acting cylinder is signal-connected to the electric control handle.

[0016] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: The manual push rod is changed to a hydraulic propulsion, and through the design of the corresponding connection structure, the stable and smooth operation of the engagement and disengagement of the friction plate clutch is ensured, and the double-acting cylinder is prevented from interfering with the friction plate clutch. By setting the corresponding sensing device, the automation of the operation of the double-acting cylinder is realized, with small operating force, greatly reducing the labor intensity of people, improving the operating comfort, reliable mechanism and strong stability. In addition, the device has low requirements for the hydraulic system, small hydraulic load and reduced cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the present invention;

[0018] Figure 2 is a schematic structural view of one side of the double-acting cylinder of the present invention;

[0019] Figure 3 is Figure 1 enlarged view I;

[0020] Figure 4 is Figure 2 enlarged view Y. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention will be further clarified below with reference to the drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0022] A hydraulic working clutch device for a harvesting machine, as Figures 1 to 4 shown, includes a double-acting cylinder 1, a friction plate clutch 2, and a transmission end 3, a swing arm 4, a rotating shaft 5, a linkage mechanism 6, a mounting seat 7, a first sensor 8, a second sensor 9, a third sensor 10, and a nut 11 provided inside the friction plate clutch 2.

[0023] The friction plate clutch 2 includes an inner friction plate and an outer friction plate. The double-acting cylinder 1 is horizontally installed through the outer ring of the friction plate clutch 2 and inside it. One end of the transmission end 3 is connected to the cylinder shaft of the double-acting cylinder 1 through a nut 11. The cylinder shaft is perpendicular to the clutch shaft 21 of the friction plate clutch 2. A long hole 31 is provided at the other end of the transmission end 3, and a round hole 41 is provided at one end of the swing arm 4. The diameter of the round hole 41 is smaller than the width of the long hole 31. A pin shaft is sequentially passed through the long hole 31 and the round hole 41 to connect the other end of the transmission end 3 with one end of the swing arm 4. When connecting, by adjusting the nut 11 and the transmission end 3, a certain gap is ensured between the long hole 31 and the round hole 41.

[0024] The first sensor 8 and the third sensor 10 are both pressure sensors. The first sensor 8 is embedded in the inner wall of the long slot 31 near one end of the double-acting cylinder 1, and the third sensor 10 is embedded in the inner wall of the long slot 31 at the opposite end. Through existing processes, it is ensured that the first sensor 8 and the third sensor 10 are firmly installed in the long slot 31. The other end of the swing arm 4 is connected to the rotating shaft 5. One end of the rotating shaft 5 passes through the swing arm 4 and is fixed. The mounting seat 7 is sleeved on the clutch shaft 21. The other end of the rotating shaft 5 is connected to the mounting seat 7. One end of the link mechanism 6 is connected to the rotating shaft 5 through the mounting seat 7, and the other end of the link mechanism 6 is connected to the pressure plate 22 of the friction plate clutch 2. The second sensor 9 is installed on the link mechanism 6 at the connection between the two. The second sensor 9 is a pressure sensor. A solenoid valve is provided on the double-acting cylinder 1, and the solenoid valve is signal-connected to the electric control handle. The electric control handle, the solenoid valve, the first sensor 8, the second sensor 9, and the third sensor 10 are respectively signal-connected to an external controller.

[0025] When starting the operation, the operator first manipulates the electric control handle. The controller issues an instruction and transmits it to the solenoid valve to start the double-acting cylinder. The double-acting cylinder starts to supply oil and extend, driving the transmission end head to move forward. After a certain dead stroke, the transmission end head acts on the swing arm through the pin shaft. At this time, the first sensor contacts the pin shaft, pushing one end of the swing arm forward, so that the other end of the swing arm drives the rotating shaft to rotate. When the rotating shaft acts on the link mechanism and the link mechanism acts on the pressure plate, the link mechanism locks itself, so that the friction plate clutch is in the "engaged" state. The output pulley 23 of the friction plate clutch drives the working components to start working. At the same time, the second sensor contacts the pressure plate and senses it, sending a signal to the controller. The controller issues a control signal to stop the double-acting cylinder from advancing and start reverse movement. After the double-acting cylinder reversely advances a certain stroke, the first sensor separates from the pin shaft. The first sensor sends a signal to the controller, and the controller issues an instruction to stop the double-acting cylinder from reverse movement, so as to ensure that the double-acting cylinder does not interfere with the friction plate clutch.

[0026] When it is necessary to end the work, the operator manipulates the electric control handle to separate, so that the double-acting cylinder starts to contract the oil supply. After the double-acting cylinder contracts a certain dead stroke, the third sensor on the inner wall of the other end of the long slot contacts the pin shaft, and at the same time contacts the swing arm through the pin shaft, driving the swing arm to move back. The swing arm drives the rotating shaft to move, and the rotating shaft acts on the link mechanism, so that the link mechanism moves in the reverse direction, the pressure plate retracts, and the friction plate clutch is in the "disengaged" state; at this time, the friction plate clutch combines and the swing arm automatically rebounds, the output pulley stops moving, and at the same time the third sensor separates from the pin shaft and issues an instruction to stop the double-acting cylinder from moving, ensuring that the force of the double-acting cylinder does not act on the swing arm, and the movement ends.

[0027] A long slot structure is provided at the connection between the drive end head and the swing arm, leaving a part of the dead band before engagement to ensure that the two-way oil cylinder thrust is not applied before engagement. After engagement, the friction plate clutch is also in a self-locking state through the self-locking of the linkage mechanism. When the friction plate clutch is in the "engaged" state, the second sensor senses and the two-way oil cylinder stops advancing and retracts. The first sensor is provided at the long hole of the two-way oil cylinder for sensing, and the action ends when the sensing disappears. A series of actions are all to ensure that the force of the two-way oil cylinder before and after engagement does not act on the friction plate clutch.

[0028] The manual push rod is changed to hydraulic propulsion, and through the design of the corresponding connection structure, the stable and smooth engagement and disengagement of the friction plate clutch are ensured, and the two-way oil cylinder is ensured not to interfere with the friction plate clutch. By setting the corresponding sensing device, the automation of the two-way oil cylinder operation is realized, with small operating force, greatly reducing the labor intensity of people, improving the operating comfort, reliable mechanism and strong stability. In addition, this device has low requirements for the hydraulic system, small hydraulic load and reduced cost.

Claims

1. A hydraulic working clutch device for a harvesting machine, characterized in that: It includes a two-way oil cylinder (1), a friction plate clutch (2), and a transmission end (3), a swing arm (4), a rotating shaft (5), a connecting rod mechanism (6), a mounting seat (7), a first sensor (8), a second sensor (9), and a third sensor (10) arranged inside the friction plate clutch (2). The two-way oil cylinder (1) penetrates through the outer ring of the friction plate clutch (2) and is arranged inside it. One end of the transmission end (3) is connected to the two-way oil cylinder (1), and the other end is connected to one end of the swing arm (4). The first sensor (8) and the third sensor (10) are relatively spaced and mounted on the transmission end (3) at the connection between the transmission end (3) and the two-way oil cylinder (1) and at the connection between the transmission end (3) and the swing arm (4). The other end of the swing arm (4) is connected to the rotating shaft (5). The mounting seat (7) is sleeved on the clutch shaft (21) of the friction plate clutch (2). The rotating shaft (5) and the connecting rod mechanism (6) are respectively mounted on the mounting seat (7). The rotating shaft (5) is connected to the connecting rod mechanism (6), and the connecting rod mechanism (6) is connected to the pressure plate (22) of the friction plate clutch (2). The second sensor (9) is mounted on the connecting rod mechanism (6) at their connection; A long slot (31) is formed in the transmission end (3), and a round hole (41) is provided on the swing arm (4). A pin shaft sequentially penetrates through the long slot (31) and the round hole (41) to connect the transmission end (3) and the swing arm (4); The first sensor (8) is embedded in the inner wall at one end of the long slot (31), and the third sensor (10) is embedded in the inner wall at the other end of the long slot (31); The diameter of the round hole (41) is smaller than the width of the long slot (31).

2. The hydraulic working clutch device of a harvesting machine according to claim 1, characterized in that: One end of the transmission end (3) is connected to the two-way oil cylinder (1) through a nut (11).

3. A hydraulic working clutch device for a harvesting machine according to claim 1, characterized in that: The first sensor (8) is a pressure sensor.

4. A hydraulic working clutch device for a harvesting machine according to claim 1, characterized in that: The second sensor (9) is a pressure sensor.

5. A hydraulic working clutch device for a harvesting machine according to claim 1, characterized in that: The third sensor (10) is a pressure sensor.

6. The hydraulic working clutch device of a harvesting machine according to claim 1, characterized in that: The two-way oil cylinder (1) is signal-connected to an electric control handle.

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