Hydraulic control clutch mechanism based on single-shaft arrangement

Abstract

The invention relates to a hydraulic control clutch mechanism, in particular to a hydraulic control clutch mechanism based on single-shaft arrangement, and aims to achieve the purposes of compact structure, reliable function, size reduction, weight reduction and equipment weight reduction on the premise of ensuring that a propulsion system in the ship industry has a high-speed dynamic joint function. The main shaft is sleeved with the shell, the tooth holder is rotationally connected and installed on the main shaft through a bearing, the torque transmission piece set is installed between the shell and the tooth holder, the reset spring and the spring baffle are installed on the portion, in the tooth holder, of the main shaft, the piston is installed between the main shaft and the shell, the piston is arranged in a cavity of the shell in a sliding mode, and an expansion cavity is formed between the piston and the shell. One end of the reset spring abuts against one end of the spring baffle, the other end of the reset spring abuts against the piston, the working oil passing hole of the main shaft is communicated with the oil inlet of the shell, and the oil outlet of the shell is communicated with the expansion cavity, the damping hole of the piston and the cavity of the shell. The invention belongs to the technical field of clutches.

Description

Technical Field

[0001] The invention relates to a hydraulically controlled clutch mechanism, in particular to a hydraulically controlled clutch mechanism based on a single-axis arrangement. The invention belongs to the technical field of clutches. Background Art

[0002] One of the core indicators of gearbox development is equipment lightweight. For ship propulsion systems, a diesel engine is conventionally matched with a gearbox with reversible output to achieve the forward and reverse functions of the system. However, since the diesel engine will stall when it is static or low-speed loaded, a clutch needs to be configured in the gearbox. When the propulsion system is started, the clutch is in a disengaged state to ensure that the diesel engine can ignite without load; when the diesel engine starts smoothly and rises to a certain speed, its load capacity meets the operating requirements, then the clutch can be controlled to engage, so that the diesel engine drives the gearbox and propeller shaft to rotate, thereby achieving the normal operation of the propulsion system; in addition, in order to realize the forward and reverse functions of the propulsion system with multiple gears, multiple clutches need to be configured in the gearbox to ensure that the output steering and speed ratio of the gearbox are changed by switching the clutch while the diesel engine speed remains unchanged, that is, the forward and reverse functions of the propulsion system with multiple gears are realized.

[0003] From the above application background, it can be seen that for the propulsion system of the ship industry, when the gearbox with forward and reverse switching function is used, the clutch should work reasonably, and the structure should be compact and the function should be reliable while ensuring that the device has high-speed dynamic engagement function, so as to achieve the goal of reducing size and weight, that is, realizing lightweight equipment. Summary of the invention

[0004] The present invention aims to realize a propulsion system in the ship industry with a compact structure and reliable functions, while ensuring that the device has a high-speed dynamic engagement function, so as to achieve the goals of reducing size and weight, and lightweight equipment, and further provide a hydraulically controlled clutch mechanism based on a single-axis arrangement.

[0005] The technical solution adopted by the present invention to solve the above problems is:

[0006] A hydraulically controlled clutch mechanism based on a single-axis arrangement, comprising a main shaft, a housing, a gear seat, a torque transmission plate group, a piston, a return spring and a spring baffle;

[0007] The housing is sleeved on the main shaft, the gear seat is rotatably connected and installed on the main shaft through the bearing, and one end of the gear seat is inserted in the housing, the torque transmission plate group is installed between the housing and the gear seat, the return spring and the spring baffle are installed on the main shaft in the gear seat, the piston is installed between the main shaft and the housing, the piston is slidably arranged in the cavity of the housing, and an expansion chamber is provided between the piston and the housing, one end of the return spring is pressed against one end of the spring baffle, and the other end of the return spring is pressed against the piston.

[0008] A working oil through hole is processed on the main shaft, the working oil through hole of the main shaft is connected with the oil inlet of the shell, and the oil outlet of the shell is connected with the expansion chamber, the damping hole of the piston and the chamber of the shell.

[0009] Further, the housing includes a shell, an inner tooth, a cylinder oil drain block, a flow regulating screw plug, an end plate and an oil baffle;

[0010] The oil cylinder drain block is installed on the housing, and the internal gear, the flow regulating screw plug and the end plate are installed on the housing away from the oil cylinder drain block.

[0011] Further, the tooth seat includes a seat body and external teeth;

[0012] The seat body is sleeved on the main shaft through a bearing, and the external teeth are installed on one end of the seat body.

[0013] Furthermore, the torque transmission plate group includes an outer gear plate and an inner gear plate;

[0014] Furthermore, the outer tooth piece is meshed with the inner tooth, the inner tooth piece is meshed with the outer tooth of the gear seat, and the end plate is sleeved on the seat body and sealed by the oil baffle plate.

[0015] Furthermore, the surfaces of the outer tooth plate and the inner tooth plate have sintered copper-based material.

[0016] Furthermore, a sliding block is provided between the oil inlet and the oil drain port of the oil cylinder drain block, and a passage formed by mixing the oil inlet and the oil drain port of the oil cylinder drain block is communicated with the damping hole of the piston.

[0017] Furthermore, the outer cylindrical surface of the main shaft is a cone, and the main shaft and the housing are connected by a conical surface interference fit.

[0018] Furthermore, the inner ring of the piston is arranged to be clearance-matched with the main shaft, and the outer ring of the piston is arranged to be clearance-matched with the matching surface of the housing.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention integrates the clutch mechanism on a transmission shaft. Compared with the traditional friction clutch, on the one hand, there is no need to separately set the support bearing of the clutch housing, and on the other hand, there is no need to use two separate transmission shafts to support the input member and output member of the clutch. The above two beneficial effects realize the compact design of the mechanism to the greatest extent, effectively reduce the size and weight of the mechanism, and simplify the layout of the clutch mechanism support housing, so that it is suitable for promotion and application in the field of high power density gearboxes, especially gearboxes with multi-speed ratio switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2This is a schematic diagram of the joint working oil circuit of the present invention.

[0023] Figure 3 This is the principle diagram of the disengagement of the working oil circuit of the present invention.

[0024] Figure 4 Schematic diagram of the power transmission route of the present invention. DETAILED DESCRIPTION

[0025] Specific implementation method 1: Combination Figure 1-Figure 4 The present embodiment is described as a hydraulically controlled clutch mechanism based on a single-axis arrangement, which comprises a main shaft 1, a housing 2, a gear seat 3, a torque transmission plate group 4, a piston 5, a return spring 6 and a spring baffle 7;

[0026] The housing 2 is sleeved on the main shaft 1, the gear seat 3 is rotatably connected and installed on the main shaft 1 through a bearing, and one end of the gear seat 3 is inserted in the housing 2, the torque transmission plate group 4 is installed between the housing 2 and the gear seat 3, the return spring 6 and the spring baffle 7 are installed on the main shaft 1 in the gear seat 3, the piston 5 is installed between the main shaft 1 and the housing 2, the piston 5 is slidably arranged in the cavity of the housing 2, and an expansion chamber is provided between the piston 5 and the housing 2, one end of the return spring 6 is pressed against one end of the spring baffle 7, and the other end of the return spring 6 is pressed against the piston 5.

[0027] A working oil through hole is machined on the main shaft 1, and the working oil through hole of the main shaft 1 is connected with the oil inlet of the housing 2, and the oil outlet of the housing 2 is connected with the expansion chamber, the damping hole 51 of the piston 5 and the chamber of the housing 2.

[0028] The piston 5 of the present invention is installed in the oil cylinder formed by the main shaft 1 and the housing 2; the inner ring and the outer ring of the piston 5 have appropriate clearances with the mating surface to enable axial sliding. The reset spring 6 is in a compressed state when installed, so it can push the piston 5 to reset quickly during the mechanism disengagement process.

[0029] Specific implementation method 2: Combination Figure 1-Figure 3 To explain this embodiment, the hydraulically controlled clutch mechanism based on a single-axis arrangement described in this embodiment, the housing 2 includes a shell, an inner gear 21, a cylinder oil drain block 22, a flow regulating screw plug 23 and an end plate 24;

[0030] The oil cylinder drain block 22 is mounted on the housing, and the inner teeth 21, the flow regulating screw plug 23 and the end plate 24 are mounted on the housing away from the oil cylinder drain block 22. Other methods are the same as those in the first embodiment.

[0031] The cylinder oil drain block 22 is a conversion module for the oil inlet and oil drain of the working cylinder; the flow regulating screw plug 23 can adjust the oil throwing amount at different positions of the torque transmission plate group 4, indirectly controlling the lubrication state of different positions of the torque transmission plate group 4; the end plate 24 is a load-bearing component, and after the mechanism is engaged, it can withstand the axial force generated by the piston 5 pressing the torque transmission plate group 4.

[0032] Specific implementation method three: Combination Figure 1 and Figure 4 This embodiment is described as a hydraulically controlled clutch mechanism based on a single-axis arrangement, wherein the gear seat 3 includes a seat body and external teeth 31;

[0033] The seat body is mounted on the main shaft 1 through a bearing sleeve, and the external gear 31 is mounted on one end of the seat body. Other methods are the same as those of the first embodiment.

[0034] Specific implementation method 4: Combination Figure 1 and Figure 4 This embodiment is described as a hydraulically controlled clutch mechanism based on a single-axis arrangement, wherein the torque transmission plate group 4 includes an outer gear plate 41 and an inner gear plate 42;

[0035] The outer tooth pieces 41 and the inner tooth pieces 42 are alternately stacked between the housing and the seat body along the axial direction. Other methods are the same as those in the first embodiment.

[0036] Specific implementation method five: combination Figure 1 and Figure 4 This embodiment is described. This embodiment is a hydraulically controlled clutch mechanism based on a single-axis arrangement. The outer tooth piece 41 meshes with the inner tooth 21, and the inner tooth piece 42 meshes with the outer tooth 31 of the gear seat 3. Both are sleeve gear structures. The end plate 24 is sleeved on the seat body and sealed by the oil baffle plate 241. The oil baffle plate 241 can prevent the lubricating oil from leaking out of the meshing area between the inner tooth piece 42 and the gear seat 3, thereby providing good lubrication conditions for the meshing teeth. Other methods are the same as those in the second, third or fourth embodiments.

[0037] Specific implementation method six: combination Figure 1 and Figure 4 The present embodiment is described as a hydraulically controlled clutch mechanism based on a single-axis arrangement, wherein the surfaces of the outer gear plate 41 and the inner gear plate 42 have sintered copper-based materials.

[0038] The number of the outer teeth 41 and the inner teeth 42 depends on the required torque transmission and can be adjusted according to the design input. Other methods are the same as those in the fourth embodiment.

[0039] Specific implementation method seven: Combination Figure 1-Figure 4This embodiment is described as a hydraulically controlled clutch mechanism based on a single-axis arrangement, wherein a slider is provided between the oil inlet and the oil drain port of the oil cylinder drain block 22, and a passage after the oil inlet and the oil drain port of the oil cylinder drain block 22 are mixed is connected to the damping hole 51 of the piston 5. Other methods are the same as those of the second embodiment.

[0040] In this embodiment, the damping hole 51 plays two roles. First, when the mechanism is engaged, after the working oil enters the cylinder, a part of it can slowly leak out through the damping hole 51, thereby slowing down the movement speed of the piston 5 and reducing the impact of the engagement. Second, when the mechanism is disengaged, the damping hole 51 can assist the cylinder oil drain block 22 to quickly drain the working oil in the cylinder.

[0041] Specific implementation method eight: Combination Figure 1 and Figure 4 This embodiment describes a hydraulically controlled clutch mechanism based on a single-axis arrangement, wherein the outer cylindrical surface of the main shaft 1 is a cone, and the main shaft 1 and the housing 2 are connected by a conical surface interference fit. Other methods are the same as those of the first embodiment.

[0042] The present invention needs to adopt a reasonable process method to ensure that the matching conical surfaces of the main shaft 1 and the housing 2 have good coaxiality and contact area, so as to ensure the consistency of the disassembly and assembly accuracy of the mechanism and the sealing of the matching surface to prevent the working oil from leaking along the matching surface.

[0043] Specific implementation method nine: Combination Figure 1 and Figure 4 This embodiment describes a hydraulically controlled clutch mechanism based on a single-axis arrangement, wherein the inner ring of the piston 5 is provided with clearance fit with the main shaft 1, and the outer ring of the piston 5 is provided with clearance fit with the matching surface of the housing. Other methods are the same as those of the first embodiment.

[0044] How it works

[0045] When the mechanism is engaged, the working oil enters the oil cylinder drain block 22 through the main shaft 1, depresses the valve core, and exposes the oil inlet. At the same time, the depressed valve core blocks the oil drain port, ensuring that the working oil enters the working cylinder of the mechanism through the oil inlet, pushing the piston 5 to press the torque transmission plate group 4, completing the engagement action, and realizing the transmission of power through the main shaft 1, the housing 2, the torque transmission plate group 4, and the gear seat 3; when the mechanism is disengaged, the slider of the oil cylinder drain block 22 is thrown up under the action of centrifugal force, blocking the oil inlet and exposing the oil drain port. At the same time, under the push of the reset spring 6, the piston 5 is reset in the disengagement direction. Under the push and squeeze of the piston 5, a part of the working oil in the working cylinder is quickly discharged through the oil drain port of the oil cylinder drain block 22, and the other part is discharged through the damping hole 51, thereby ensuring that the mechanism quickly completes the disengagement action.

[0046] The above-mentioned specific implementation can be partially adjusted in different ways by those skilled in the art without departing from the principle and purpose of the present invention. The protection scope of the present invention shall be based on the claims and shall not be limited by the above-mentioned specific implementation. Each implementation scheme within its scope shall be subject to the constraints of the present invention.

Claims

1. A hydraulically controlled clutch mechanism based on a single-axis arrangement, characterized in that: It comprises a main shaft (1), a housing (2), a gear seat (3), a torque transmission plate group (4), a piston (5), a return spring (6) and a spring baffle (7); The housing (2) is sleeved on the main shaft (1), the gear seat (3) is rotatably connected and mounted on the main shaft (1) through a bearing, and one end of the gear seat (3) is inserted into the housing (2), the torque transmission plate group (4) is mounted between the housing (2) and the gear seat (3), the return spring (6) and the spring baffle (7) are mounted on the main shaft (1) in the gear seat (3), the piston (5) is mounted between the main shaft (1) and the housing (2), the piston (5) is slidably arranged in the cavity of the housing (2), and an expansion chamber is provided between the piston (5) and the housing (2), one end of the return spring (6) is pressed against one end of the spring baffle (7), and the other end of the return spring (6) is pressed against the piston (5), A working oil through hole is machined on the main shaft (1), the working oil through hole of the main shaft (1) is connected to the oil inlet of the housing (2), and the oil outlet of the housing (2) is connected to the expansion chamber, the damping hole (51) of the piston (5) and the chamber of the housing (2).

2. According to claim 1, a hydraulically controlled clutch mechanism based on a single-axis arrangement is characterized in that: The outer shell (2) comprises a housing, an inner tooth (21), a cylinder oil drain block (22), a flow regulating screw plug (23) and an end plate (24); The oil cylinder drain block (22) is mounted on the housing, and the inner teeth (21), the flow regulating screw plug (23) and the end plate (24) are mounted on the housing away from the oil cylinder drain block (22).

3. The hydraulically controlled clutch mechanism based on a single-axis arrangement according to claim 1, characterized in that: The tooth seat (3) comprises a seat body and external teeth (31); The seat body is sleeved on the main shaft (1) through a bearing, and the external teeth (31) are installed on one end of the seat body.

4. The hydraulically controlled clutch mechanism based on a single-axis arrangement according to claim 1, characterized in that: The torque transmission plate group (4) comprises an outer tooth plate (41) and an inner tooth plate (42); The outer tooth plates (41) and the inner tooth plates (42) are alternately stacked between the shell and the seat body in the axial direction.

5. A hydraulically controlled clutch mechanism based on a single-axis arrangement according to claim 2, 3 or 4, characterized in that: The outer tooth piece (41) meshes with the inner tooth (21), the inner tooth piece (42) meshes with the outer tooth (31) of the tooth seat (3), and the end plate (24) is sleeved on the seat body and sealed by the oil baffle plate (241).

6. According to claim 4, a hydraulically controlled clutch mechanism based on a single-axis arrangement is characterized in that: The surfaces of the outer tooth plate (41) and the inner tooth plate (42) are provided with sintered copper-based material. The number of the outer teeth (41) and the inner teeth (42) depends on the size of the required transmitted torque and can be adjusted according to the design input.

7. The hydraulically controlled clutch mechanism based on a single-axis arrangement according to claim 2, characterized in that: A sliding block is provided between the oil inlet and the oil drain port of the oil cylinder drain block (22), and a passage formed by mixing the oil inlet and the oil drain port of the oil cylinder drain block (22) is communicated with the damping hole (51) of the piston (5).

8. The hydraulically controlled clutch mechanism based on a single-axis arrangement according to claim 1, characterized in that: The outer cylindrical surface of the main shaft (1) is a cone, and the main shaft (1) and the outer shell (2) are connected by a conical surface interference fit.

9. The hydraulically controlled clutch mechanism based on a single-axis arrangement according to claim 1, characterized in that: The inner ring of the piston (5) is arranged to be clearance-matched with the main shaft (1), and the outer ring of the piston (5) is arranged to be clearance-matched with the matching surface of the housing.

Images