Heavy-load hydraulic clutch

Abstract

The utility model discloses a heavy-load hydraulic clutch, and belongs to the technical field of industrial clutches. The heavy-load hydraulic clutch comprises a shaft tube, a friction plate, a steel plate, a driving claw disc, a pushing disc and a cylinder body, wherein the friction plate and the steel plate axially move along the outer side of the shaft tube; the driving claw disc is arranged at the output end of the shaft tube in a sleeving manner and is in sliding connection with the outer side of the friction plate; the pushing disc axially moves along the outer side of the shaft tube and is used for extruding the friction plate and the steel plate; the piston is arranged in the cylinder body and is used for pushing the push disc to move; and the first elastic piece is fixedly arranged at the contact part between the shaft tube and the friction plate and the contact part between the shaft tube and the steel sheet and is used for resetting the push disc. According to the heavy-load hydraulic clutch, the second elastic piece is matched with the first elastic piece for use, so that the heavy-load hydraulic clutch can be quickly reset in a separated state, the response speed and durability of the clutch are improved, meanwhile, the axial force borne by a precision bearing on the push disc is reduced, and the service life of the clutch is prolonged. And the service life of the precision bearing is obviously prolonged.

Description

Technical Field

[0001] This application relates to the technical field of industrial clutches, and specifically to a heavy-duty hydraulic clutch. Background Art

[0002] In the industrial and mechanical fields, a clutch is an important transmission component used to connect and disconnect mechanical components in a power transmission system.

[0003] In existing friction clutches used in the industrial transmission field, the principle is that the steel sheets and friction plates are in a separated state in the natural state of the clutch. When the pressure source supplies oil, the piston pushes the driving pressure plate to compress multiple groups of steel sheets and friction plates, and the clutch is in an engaged state to transmit torque. When the pressure source cuts off the oil, the return spring pushes the driving pressure plate to move axially to the right, and the steel sheets and friction plates are separated. At this time, the clutch is in a separated state and does not transmit torque. However, its return spring always exerts a rightward pressure on the push plate. Even in the separated state of the clutch, the bearing is continuously pushed by the full force of the return spring. This design, when the clutch is engaged, easily causes the precision bearing to directly bear all the thrust from the cylinder, and the continuous high-load state greatly shortens the service life of the precision bearing, increases the failure rate, and ultimately has an adverse impact on the stability and life of the entire clutch.

[0004] Therefore, this application provides a heavy-duty hydraulic clutch to solve the above problems. Utility Model Content

[0005] This application provides a heavy-duty hydraulic clutch, aiming to solve the problems in the existing friction clutch in the background art, where the design of the return spring continuously pushing the precision bearing, although ensuring the engagement force, shortens the bearing life due to its high-load state, increases the failures, and affects the overall stability and life of the clutch.

[0006] To achieve the above object, this application provides the following technical solution: A heavy-duty hydraulic clutch includes a shaft tube, friction plates and steel sheets that axially move along the outer side of the shaft tube, a driving claw disc sleeved on the output end of the shaft tube and slidably connected to the outer side of the friction plates, a push plate that axially moves along the outer side of the shaft tube to squeeze the friction plates and steel sheets, a cylinder block arranged at the input end of the shaft tube, a piston arranged in the cylinder block to push the push plate to move, and a first elastic member fixedly arranged at the contact part between the shaft tube and the friction plates and steel sheets to reset the push plate. Precision bearings are arranged between the push plate and the piston and between the shaft tube and the cylinder block;

[0007] The cylinder block includes a right part sleeved on the input end of the shaft tube, an oil inlet arranged on one side of the right part, and a left part fixedly connected to the side of the right part away from the oil inlet by screws. The right part is connected to the outside of the precision bearing on the shaft tube;

[0008] On the inner side of the left part close to the right part, a second elastic member for pressing the piston is fixedly arranged; the cylinder block is composed of a right part, an oil inlet and a left part, and is fastened together by screws. The design of this split structure not only ensures the overall strength of the cylinder block, but also facilitates processing and assembly; at the same time, the combined use of the second elastic member and the first elastic member enables the heavy-duty hydraulic clutch to quickly reset in the disengaged state, improves the response speed and durability of the clutch, reduces the axial force borne by the precision bearing on the push plate, and significantly improves the service life of the precision bearing.

[0009] Preferably, in order to increase the contact area, a plurality of friction plates and steel plates are provided, and the plurality of friction plates and steel plates are arranged at intervals; the interval arrangement of the plurality of friction plates and steel plates can significantly increase the contact area between them. In the same axial space, more friction plates and steel plates mean more friction contact points, thereby improving the transmission efficiency of the clutch.

[0010] Preferably, in order to further extend the service life of the precision bearing, a retaining ring is fixedly arranged at one end of the piston away from the cylinder block, and the retaining ring is connected to the outside of the precision bearing on the push plate; since the retaining ring can effectively axially position the precision bearing on the push plate, during the operation of the clutch, the axial impact received by the precision bearing will be greatly reduced, making its axial movement more stable, thereby helping to reduce the wear rate and extend the service life.

[0011] Preferably, in order to enhance the sealing performance, a groove extending along the periphery is provided on the surface of the piston close to the cylinder block, and an O-ring is arranged in the groove; the design of the O-ring and the groove can form an effective sealing barrier to prevent the oil in the hydraulic system from leaking out through the gap between the piston and the cylinder block.

[0012] Preferably, in order to facilitate the fixation of the cylinder block, a pressing plate is fixedly connected to the side of the right part away from the left part by screws; the pressing plate forms a rigid connection with the right part through screws, and this connection method can significantly enhance the overall stability of the cylinder block.

[0013] Preferably, in order to facilitate rapid response, both the first elastic member and the second elastic member are return springs; the rapid reset ability of the return spring ensures that the mechanical device can quickly return to the initial state or position when needed, thereby meeting the working conditions that require rapid engagement and disengagement. At the same time, the design of the return spring is relatively simple and is easy to integrate and install with other components.

[0014] By providing a cylinder block with a split structure, the heavy-duty hydraulic clutch makes the cylinder block more convenient for processing and assembly, and at the same time ensures the overall strength and stability of the cylinder block;

[0015] By the combined use of the second elastic member and the first elastic member, the heavy-duty hydraulic clutch can be quickly reset in the disengaged state, improving the response speed and durability of the clutch. At the same time, the axial force borne by the precision bearing on the push plate is reduced, significantly extending the service life of the precision bearing.

[0016] By providing a retaining ring on the piston, the heavy-duty hydraulic clutch can effectively axially position the precision bearing on the push plate, greatly reducing the axial impact on the precision bearing and ensuring its stability during axial movement. This helps to reduce the wear rate of the precision bearing and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural diagram of a heavy-duty hydraulic clutch;

[0018] Figure 2 FIG. is a schematic partial structure diagram of a heavy-duty hydraulic clutch Figure 1 ;

[0019] Figure 3 FIG. is a schematic partial structure diagram of a heavy-duty hydraulic clutch Figure 2 .

[0020] In the figure:

[0021] 1. Shaft tube;

[0022] 2. Friction plate;

[0023] 3. Steel sheet;

[0024] 4. Driving claw disc;

[0025] 5. Push plate;

[0026] 6. First elastic member;

[0027] 7. Piston; 71. Retaining ring; 72. Groove; 721. O-ring seal;

[0028] 8. Cylinder block; 81. Right part; 82. Oil inlet; 83. Left part; 84. Pressure plate;

[0029] 9. Second elastic member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0031] Example 1

[0032] This embodiment provides a heavy-duty hydraulic clutch. As Figures 1 - 3 shown, the heavy-duty hydraulic clutch includes a shaft tube 1, friction plates 2 and steel plates 3 that axially move along the outer side of the shaft tube 1, a driving claw disc 4 sleeved on the output end of the shaft tube 1 and slidably connected to the outer side of the friction plates 2, a push plate 5 that axially moves along the outer side of the shaft tube 1 for squeezing the friction plates 2 and the steel plates 3, a cylinder block 8 arranged at the input end of the shaft tube 1, a piston 7 arranged in the cylinder block 8 for pushing the push plate 5 to move, and a first elastic member 6 fixedly arranged at the contact part between the shaft tube 1 and the friction plates 2 and the steel plates 3 for resetting the push plate 5. Precision bearings are arranged between the push plate 5 and the piston 7 and between the shaft tube 1 and the cylinder block 8; the cylinder block 8 includes a right member 81 sleeved on the input end of the shaft tube 1, an oil inlet 82 arranged on one side of the right member 81, and a left member 83 fixedly connected to the side of the right member 81 away from the oil inlet 82 by screws. The outer side of the precision bearing on the right member 81 is connected to the shaft tube 1; a second elastic member 9 for pressing the piston 7 is fixedly arranged inside the left member 83 close to the right member 81. Among them, both the first elastic member 6 and the second elastic member 9 are return springs.

[0033] During use, when hydraulic oil enters the right member 81 from the oil inlet 82, the oil pressure will act on the piston 7 and push the piston 7 to move towards the output end of the shaft tube 1. As the piston 7 moves, the push plate 5 connected to the piston 7 will axially move along the outer side of the shaft tube 1, squeezing the friction plates 2 and the steel plates 3 to make them closely fit. At this time, power can be transmitted from the input end of the shaft tube 1 to the friction plates 2, the steel plates 3 and the driving claw disc 4, driving them to rotate together. When the injection of hydraulic oil into the cylinder block 8 is stopped and the oil pressure is released so that the piston 7 is no longer affected by the oil pressure, the push plate 5 will start to reset under the action of the first elastic member 6, gradually moving away from the friction plates 2 and the steel plates 3, separating the friction plates 2 and the steel plates 3. At the same time, the second elastic member 9 will also act on the piston 7, making it move towards the input end of the cylinder block 8, further promoting the rapid reset of the push plate 5 and reducing the wear on the precision bearing. After the push plate 5 is completely reset, there is no longer any extrusion between the friction plates 2 and the steel plates 3, so complete separation can be achieved.

[0034] Specifically, a groove 72 extending along the periphery is arranged on the surface of the piston 7 close to the cylinder block 8, and an O-ring 721 is arranged in the groove 72;

[0035] When injecting hydraulic oil into the cylinder block 8 through the oil inlet 82, the oil pressure acts on the piston 7 and pushes the piston 7 to move towards the output end of the shaft tube 1. During this process, the O-ring 721 is closely attached between the groove 72 and the cylinder block 8, effectively preventing the leakage of hydraulic oil and ensuring that the oil pressure can be smoothly transmitted to the piston 7.

[0036] Furthermore, a pressure plate 84 is fixedly connected to the side of the right member 81 away from the left member 83 by screws. When the cylinder block 8 is installed, the screws can first pass through the pressure plate 84 and be screwed into the corresponding threaded holes of the right member 81 to fix the right member 81 on the pressure plate 84. Then, the right member 81 and the left member 83 can be fixed by screws, and the machining and assembly of the cylinder block 8 can be easily achieved.

[0037] In addition, in order to increase the contact area, a plurality of friction plates 2 and steel sheets 3 are provided. The plurality of friction plates 2 and steel sheets 3 are arranged at intervals. The arrangement at intervals of the plurality of friction plates 2 and steel sheets 3 can significantly increase the contact area between them. In the same axial space, more friction plates 2 and steel sheets 3 mean more friction contact points, thereby improving the transmission efficiency of the clutch.

[0038] Embodiment 2

[0039] Different from Embodiment 1, in order to further extend the service life of the precision bearing, a retaining ring 71 is fixedly arranged at one end of the piston 7 away from the cylinder block 8, and the retaining ring 71 is connected to the outside of the precision bearing on the thrust plate 5. Since the retaining ring 71 can effectively axially position the precision bearing on the thrust plate 5, during the operation of the clutch, the axial impact received by the precision bearing will be greatly reduced, making its axial movement more stable, thereby helping to reduce the wear rate and extend the service life.

[0040] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application, according to the technical solution and its concept of the present application, makes equivalent replacement or change, and should be covered by the protection scope of the present application.

Claims

1. An overload hydraulic clutch, comprising a shaft tube (1), friction plates (2) and steel sheets (3) axially moving along the outer side of the shaft tube (1), a driving claw disc (4) sleeved on the output end of the shaft tube (1) and slidably connected to the outer side of the friction plates (2), a push plate (5) axially moving along the outer side of the shaft tube (1) for pressing the friction plates (2) and the steel sheets (3), a cylinder block (8) arranged at the input end of the shaft tube (1), a piston (7) arranged in the cylinder block (8) for pushing the push plate (5) to move, and a first elastic member (6) fixedly arranged at the contact part between the shaft tube (1) and the friction plates (2) and the steel sheets (3) for resetting the push plate (5). Precision bearings are arranged between the push plate (5) and the piston (7) and between the shaft tube (1) and the cylinder block (8). It is characterized in that: The cylinder block (8) includes a right member (81) sleeved on the input end of the shaft tube (1), an oil inlet (82) arranged on one side of the right member (81), and a left member (83) fixedly connected to the side of the right member (81) away from the oil inlet (82) by screws. The right member (81) is connected to the outside of the precision bearing on the shaft tube (1). A second elastic member (9) for pressing the piston (7) is fixedly arranged inside the left member (83) close to the right member (81).

2. The heavy-duty hydraulic clutch according to claim 1, wherein: A plurality of the friction plates (2) and the steel sheets (3) are provided, and the plurality of the friction plates (2) and the steel sheets (3) are arranged at intervals.

3. The heavy-duty hydraulic clutch according to claim 1, wherein: A retaining ring (71) is fixedly arranged at the end of the piston (7) away from the cylinder block (8), and the retaining ring (71) is connected to the outside of the precision bearing on the push plate (5).

4. The heavy-duty hydraulic clutch according to claim 1, wherein: A groove (72) extending along the periphery is arranged on the surface of the piston (7) close to the cylinder block (8), and an O-ring (721) is arranged in the groove (72).

5. The heavy-duty hydraulic clutch according to claim 1, characterized in that: A pressing plate (84) is fixedly connected to the side of the right member (81) away from the left member (83) by screws.

6. The heavy-duty hydraulic clutch according to claim 1, wherein: Both the first elastic member (6) and the second elastic member (9) are return springs.

Images