Hydraulic drum clutch

Abstract

The invention discloses a hydraulic drum type clutch which comprises a brake main shaft, a power receiving end is arranged at one end of the brake main shaft, and a hydraulic oil way is arranged in the brake main shaft; the first piston drum is arranged on the periphery of the brake main shaft and is in sliding connection with the brake main shaft; the first piston drum is driven by pressure liquid in the hydraulic oil way to move in the direction away from the braking main shaft. When the supply of the pressure liquid for driving the first piston drum to move in the direction far away from the brake main shaft by the hydraulic oil circuit is cancelled, the first reset piece is used for driving the first piston drum to move in the direction close to the brake main shaft; the first driven piece comprises a first annular wall annularly arranged on the periphery of the first piston drum and a first transmission plate connected with one end of the first annular wall; when the hydraulic oil way drives the first piston drum to move to a preset position in the direction away from the braking main shaft, the first piston drum abuts against the first annular wall, and the braking main shaft, the first piston drum and the first driven piece are connected into a whole.

Description

Technical Field

[0001] The present application relates to the technical field of clutch devices, and in particular to a hydraulic drum clutch. Background Art

[0002] The engine of a car needs to transfer kinetic energy to the wheels through the gearbox, which controls torque and wheel speed through different gears. However, for the gearbox to smoothly change gears, it must cut off the power transmission between the engine and the transmission. If the engine needs to be turned off every time a gear is changed, it is obviously not in line with actual needs. Therefore, the clutch, which can disconnect the power transmission between the engine and the transmission without turning off the engine, and the auxiliary braking device are needed.

[0003] The clutch in the prior art is generally a grinding spring clutch, the service life of which is greatly affected by the driving habits of the owner, the torque transmitted is limited, and it is easy to heat and wear under high load or frequent operation. As a clutch of a new structure, the drum clutch, as disclosed in the prior art in the patent application number CN201911097359.4, can control the output torque of the output spring friction sleeve at a slow speed, but this clutch has a complex structure, is difficult to manufacture, and is difficult to popularize. The P2 type power module with a drum clutch disclosed in the patent application number CN201410239408.4 integrates the drum clutch into the rotor of the drive motor, but it adopts a movable wedge block (7), thereby making the pushing part (3) of the drum clutch move in the radial direction of the vehicle power system to make the drum clutch engage or disengage, and the bracket (4) is supported by the inclined surface of the wedge block (7), and will be deformed, so that the first friction plate (2.1) and the second friction plate (2.2) can be close. Therefore, the bracket (4) is more prone to fatigue damage, and the service life of this drum clutch is relatively short. Summary of the invention

[0004] The present invention mainly aims at the above problems and proposes a hydraulic drum clutch, aiming to solve the technical problems in the background technology.

[0005] To achieve the above object, the present invention provides a hydraulic drum clutch, comprising: A brake spindle, one end of which is provided with a power receiving end, a hydraulic oil circuit is provided inside the brake spindle, and a fluid inlet and outlet of the hydraulic oil circuit are provided on an outer wall of the brake spindle; A first piston drum, which is arranged on the outer periphery of the brake spindle and is slidably connected to the brake spindle; the first piston drum is driven to move away from the brake spindle by the pressure liquid in the hydraulic oil circuit; a first reset member, used for driving the first piston drum to move toward the brake spindle when the supply of pressure liquid to the hydraulic oil circuit driving the first piston drum to move away from the brake spindle is cancelled; The first follower comprises a first annular wall arranged around the outer circumference of the first piston drum and a first transmission plate connected to one end of the first annular wall; when the hydraulic oil circuit drives the first piston drum to move to a predetermined position in a direction away from the brake spindle, the first piston drum abuts against the first annular wall, and the brake spindle, the first piston drum and the first follower are connected as a whole; conversely, a first non-contact gap is provided between the first piston drum and the first annular wall; the first transmission plate is provided with a first power output end.

[0006] Further, it includes a second piston drum, a second reset member, and a second follower; the brake spindle is axially provided with a first clutch area and a second clutch area; the first piston drum is arranged in the first clutch area; the second piston drum is arranged in the second clutch area, and the second piston drum is arranged on the outer periphery of the brake spindle and is slidably connected with the brake spindle; the second piston drum is driven to move in a direction away from the brake spindle by the pressure liquid in the hydraulic oil circuit; when the pressure liquid supply of the hydraulic oil circuit driving the second piston drum to move in a direction away from the brake spindle is cancelled, the second reset member is used to drive the second piston drum to move in a direction close to the brake spindle; the second follower includes a second annular wall arranged around the outer periphery of the second piston drum and a second transmission plate connected to one end of the second annular wall; when the hydraulic oil circuit drives the second piston drum to move to a predetermined position in a direction away from the brake spindle, the second piston drum abuts against the second annular wall, and the brake spindle, the second piston drum and the second follower are connected as a whole; conversely, there is a second non-contact gap between the second piston drum and the second annular wall; the second transmission plate is provided with a second power output end.

[0007] Furthermore, it includes an assembled outer shell and a bearing, the assembled outer shell accommodates the second driven member and the brake main shaft, the bearing is arranged between the assembled outer shell and the brake main shaft, and between the second transmission plate and the assembled outer shell, and the outer wall of the assembled outer shell is provided with a mounting connection portion; the assembled outer shell is provided with an oil pipeline connected with the inlet and outlet ports; the assembled outer shell is provided with a avoidance hole for accommodating the power receiving end, the first power output end, and the second power output end to be exposed.

[0008] Furthermore, the first piston drum and the second piston drum are driven by the pressure liquid in the hydraulic oil circuit; Alternatively, the hydraulic oil circuit is of branch design, and the first piston drum and the second piston drum are independently driven by the pressure liquid of the corresponding hydraulic oil circuit.

[0009] Furthermore, the first follower and the second follower are both cylindrical structures, the first follower accommodates and encloses the first piston drum; the second follower accommodates and encloses the first follower and the second piston drum, and a third non-contact gap is provided between the first follower and the second follower; the first transmission plate is rotatably connected to the brake spindle via a bearing; the first transmission plate and the second transmission plate are rotatably connected via a bearing.

[0010] Furthermore, it includes a first transmission shaft and a second transmission shaft; the power receiving end is an axial hole structure arranged at one end of the brake main shaft, and the axis of the axial hole coincides with the axis of the brake main shaft; the first power output end is an axial hole structure arranged at the first transmission plate, and the second power output end is an axial hole structure arranged at the second transmission plate, the second transmission shaft is a hollow shaft, one end of the second transmission shaft is cooperatively connected with the second power output end, and the first transmission shaft passes through the inner hole of the second transmission shaft and is connected with the first power output end.

[0011] Furthermore, it comprises a guide member connected to the first piston drum, and the brake spindle is provided with a guide portion slidingly matched with the guide member; the first piston drum moves relative to the brake spindle along the guide direction of the guide member.

[0012] Furthermore, it comprises a friction plate, wherein the friction plate is connected to the first piston drum and / or the first annular wall.

[0013] Furthermore, it comprises a sealing gasket, the outer wall of the brake spindle is provided with a cylinder column whose inner hole is connected to the hydraulic oil circuit, the first piston drum is provided with a sliding hole matched with the cylinder column; the sealing gasket is sleeved on the end of the cylinder column.

[0014] Furthermore, the number of the first piston drums and the first reset members are both three, and they are evenly distributed along the circumferential direction of the brake spindle axis; each of the first reset members connects two adjacent first piston drums, and the first reset members are used to provide elastic tension.

[0015] Furthermore, it includes a limit plate, a buffer plate, and a buffer elastic member; the limit plate is fixedly connected to the first follower and receives the output power of the first power output end; the limit plate and the buffer plate are connected through the buffer elastic member; the limit plate and / or the first follower limit the buffer plate when it rotates to a certain angle relative to the first follower; the buffer elastic member provides elastic damping when the buffer plate rotates relative to the limit plate; the buffer plate is provided with a third power output end.

[0016] Furthermore, it comprises an assembled outer shell and a bearing, wherein the assembled outer shell accommodates the first driven member and the brake spindle; the bearing is arranged between the assembled outer shell and the brake spindle, and between the third power output end and the assembled outer shell; the assembled outer shell is provided with an oil pipeline connected with the inlet and outlet; the assembled outer shell is provided with a position avoidance hole for allowing the power receiving end and the third power output end to be exposed; The buffer elastic member is a cylindrical spring, and there are multiple of them, which are arranged circumferentially along the axis of the brake main shaft; the limit plate and the buffer plate are both provided with connecting and accommodating grooves corresponding to the cylindrical springs; the first transmission plate is provided with a limit shaft, and the limit plate is connected to the first transmission plate through the limit shaft; the buffer plate is arranged between the limit plate and the first transmission plate; and the buffer plate is provided with an active interval groove corresponding to the limit shaft; the first transmission plate is provided with an avoidance groove corresponding to the cylindrical spring.

[0017] Compared with the prior art, the hydraulic drum clutch provided by the present invention has a simple structure, is easy to manufacture and maintain, and can be used as a dry clutch or a wet clutch. When used as a wet clutch, it has good heat dissipation performance, long service life, can withstand greater engine torque, has high load-bearing capacity, and is more effective when used on large trucks, reducing the phenomenon of clutch plate burning. To avoid the hysteresis of the grinding plate spring clutch with running-in, the solution provided by the present application is sensitive and quick to respond, has no running-in drag phenomenon, and performs better when used with an engine with fuel-saving cylinder deactivation technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a hydraulic drum clutch for this application.

[0019] Figure 2 This is a cross-sectional view of a hydraulic drum clutch according to the present application.

[0020] Figure 3 This is a schematic structural diagram of a hydraulic drum clutch in the present application when the outer shell is not connected for assembly.

[0021] Figure 4 This is a cross-sectional view of a hydraulic drum clutch of the present application when the outer shell is not connected for assembly.

[0022] Figure 5 A cross-sectional view of a hydraulic drum clutch of the present application when the outer housing is not connected.

[0023] Figure 6 This is another cross-sectional view of a hydraulic drum clutch of the present application when the outer housing is not connected for assembly.

[0024] Figure 7This is a schematic diagram of the exploded structure of a hydraulic drum clutch without being connected to the assembled outer shell body of the present application.

[0025] Figure 8 This is a schematic structural diagram of the second driven member when the hydraulic drum clutch of the present application is not connected to the outer assembly housing.

[0026] Fig. 9 Figure 8 Schematic diagram of the structural breakdown of the foundation.

[0027] Fig.10 This is a schematic diagram of the decomposed structure of the friction plate, first piston drum, second piston drum and brake spindle of a hydraulic drum clutch of the present application.

[0028] Fig.11 This is a schematic diagram of the brake spindle structure of a hydraulic drum clutch in the present application.

[0029] Fig.12 This is a schematic diagram of the assembly outer shell structure of a hydraulic drum clutch in the present application.

[0030] Fig.13 This is a schematic diagram of the exploded structure of the outer shell assembly of a hydraulic drum clutch in the present application.

[0031] Fig.14 This is a schematic diagram of the structural decomposition of Example 2 of a hydraulic drum clutch of the present application.

[0032] Fig.15 This is a schematic diagram of the structural decomposition from another perspective of Example 2 of a hydraulic drum clutch of the present application.

[0033] Fig.16 A cross-sectional view of a damping system and a first driven member of a hydraulic drum clutch of the present application.

[0034] Fig.17 This is a schematic diagram of the decomposition structure of a damping system and a first driven member of a hydraulic drum clutch of the present application.

[0035] Fig.18 This is a schematic structural diagram of the first driven member of Example 2 of a hydraulic drum clutch of the present application.

[0036] Fig.19 This is a schematic diagram of the structural decomposition of a damping system of a hydraulic drum clutch in the present application.

[0037] Reference numerals shown in the figure: 1, brake spindle; 110, power receiving end; 120, liquid inlet and outlet; 130, first clutch area; 140, second clutch area; 150, guide part; 160, cylinder column; 2, first piston drum; 210, sliding hole; 3, first reset member; 4, first follower; 410, first annular wall; 420, first transmission plate; 421, avoidance groove; 430, first power output end; 5, second piston drum; 6, second reset member; 7, second follower; 710, second annular wall; 720, second transmission Plate; 730, second power output terminal; 740, end cover; 8, assembled outer shell; 810, installation connection part; 820, oil pipeline; 830, front shell; 840, rear shell; 850, retaining ring; 9, bearing; 10, first transmission shaft; 11, second transmission shaft; 12, guide member; 13, friction plate; 14, sealing gasket; 15, oil seal ring; 16, limit plate; 1650, connection accommodating groove; 17, buffer plate; 1710, third power output terminal; 1720, active interval groove; 18, buffer elastic member; 19, limit shaft. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model. It is understandable that the drawings are only provided for reference and illustration, and are not used to limit the utility model. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0039] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to another component, or there may be an intermediate component at the same time. Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as those generally understood by technicians in the technical field of the present invention. It should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The terms used in this document in the specification of the present utility model are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model.

[0040] It should also be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0041] Please refer to Figure 1 - Fig.13 , this embodiment provides a hydraulic drum clutch, comprising: A brake spindle 1, one end of which is provided with a power receiving end 110, a hydraulic oil circuit is provided inside the brake spindle 1, and a fluid inlet and outlet 120 of the hydraulic oil circuit is provided on the outer wall of the brake spindle 1; A first piston drum 2, which is arranged on the outer periphery of the brake spindle 1 and is slidably connected to the brake spindle 1; the first piston drum 2 is driven by the pressure liquid in the hydraulic oil circuit to move away from the brake spindle 1; A first reset member 3, when the supply of pressure liquid to the hydraulic oil circuit driving the first piston drum 2 to move away from the brake spindle 1 is cancelled, the first reset member 3 is used to drive the first piston drum 2 to move toward the brake spindle 1; The first follower 4 includes a first annular wall 410 arranged around the outer periphery of the first piston drum 2 and a first transmission plate 420 connected to one end of the first annular wall 410; when the hydraulic oil circuit drives the first piston drum 2 to move to a predetermined position away from the brake spindle 1, the first piston drum 2 abuts against the first annular wall 410, and the brake spindle 1, the first piston drum 2 and the first follower 4 are connected as a whole; conversely, a first non-contact gap is provided between the first piston drum 2 and the first annular wall 410; the first transmission plate 420 is provided with a first power output end 430.

[0042] The power receiving end 110 is used to receive power from the engine, and the brake main shaft 1 rotates accordingly. When the car is driving normally and the owner does not step on the clutch pedal under normal circumstances, the pressure liquid in the hydraulic oil circuit acts on the first piston drum 2, so that the first piston drum 2 is tightly pressed against the first follower 4. The brake main shaft 1, the first piston drum 2 and the first follower 4 are connected as a whole, so that the first transmission plate 420 can also rotate with the brake main shaft 1, and the first power output end 430 is used to connect with the subsequent gearbox power receiving part.

[0043] When the car owner needs to change gears or brake, he presses the clutch pedal, canceling the supply of pressure liquid for the hydraulic oil circuit to drive the first piston drum 2 to move away from the brake spindle 1, and the pressure liquid in the hydraulic system flows out through the hydraulic oil circuit through the inlet and outlet ports 120. The first reset member 3 is used to drive the first piston drum 2 to move toward the brake spindle 1, so that there is a first non-contact gap between the first piston drum 2 and the first annular wall 410. Even if the first piston drum 2 and the brake spindle 1 are driven to rotate by the engine, the first follower 4 will not rotate synchronously, and the gearbox and wheel transmission system connected to the first power output end 430 are isolated from the power from the engine.

[0044] When the owner stops stepping on the clutch pedal, the pressure liquid in the hydraulic system resumes entering the hydraulic oil circuit from the inlet and outlet 120, and the pressure liquid drives the first piston drum 2 to move away from the brake spindle 1 to resist the first annular wall 410. And because the first piston drum 2 is arranged on the outer periphery of the brake spindle 1 and the first annular wall 410 is arranged around the outer periphery of the first piston drum 2, the first piston drum 2 is subjected to the dual effects of the rotating centrifugal force and the pressure of the pressure liquid, and the first piston drum 2 is more tightly connected to the first follower 4, avoiding the problem that the grinding spring type clutch relies only on friction and has low effective transmission. To avoid the grinding spring type clutch with running-in hysteresis, the solution provided by the present application is sensitive and quick to respond, without running-in drag phenomenon, and is used with the engine of the fuel-saving cylinder deactivation technology, and performs better.

[0045] Compared with other types of drum clutches, it has a simple structure, is easy to manufacture and maintain, and can be used as a dry clutch or a wet clutch. When used as a wet clutch, it has good heat dissipation performance, a long service life, can withstand greater engine torque, has a high load-bearing capacity, and is more effective when used on large trucks, reducing the phenomenon of clutch burning.

[0046] In some embodiments, the car owner can step on the clutch pedal, and the pressure liquid can cancel the pressure drive on the first piston drum 2. Without relying on the first reset member 3, the first piston drum 2 can also move toward the direction close to the brake spindle 1, and the first piston drum 2 is released from abutting the first annular wall 410. The first reset member 3 is to assist the first piston drum 2 to move toward the direction close to the brake spindle 1 more quickly, so that there is a first non-contact gap between the first piston drum 2 and the first annular wall 410.

[0047] In some embodiments, the clutch can also be reversed, with the first power output end 430 connected to the engine power output end and the power receiving end 110 connected to the gearbox for use.

[0048] Embodiment 1 Please refer to Figure 2 and Figure 4 , Figure 5 , Fig. 9 - Fig.11 , including a second piston drum 5, a second reset member 6, and a second follower 7; the brake spindle 1 is axially provided with a first clutch area 130 and a second clutch area 140; the first piston drum 2 is provided in the first clutch area 130; the second piston drum 5 is provided in the second clutch area 140, and the second piston drum 5 is provided on the outer periphery of the brake spindle 1 and is slidably connected with the brake spindle 1; the second piston drum 5 is driven to move away from the brake spindle 1 by the pressure liquid in the hydraulic oil circuit; When the supply of pressure liquid for the hydraulic oil circuit to drive the second piston drum 5 to move away from the brake spindle 1 is canceled, the second reset member 6 is used to drive the second piston drum 5 to move toward the brake spindle 1; the second follower 7 includes a second annular wall 710 arranged around the outer periphery of the second piston drum 5 and a second transmission plate 720 connected to one end of the second annular wall 710; when the hydraulic oil circuit drives the second piston drum 5 to move to a predetermined position away from the brake spindle 1, the second piston drum 5 abuts against the second annular wall 710, and the brake spindle 1, the second piston drum 5 and the second follower 7 are connected as a whole; conversely, a second non-contact gap is provided between the second piston drum 5 and the second annular wall 710; the second transmission plate 720 is provided with a second power output end 730.

[0049] A first clutch area 130 and a second clutch area 140 are axially arranged on the brake main shaft 1, a second set of second piston drum 5 components are arranged adjacent to the first piston drum 2, and a second transmission plate 720 is provided with a second power output end 730, which can be adapted to be connected to a gearbox with a dual clutch system. This dual clutch system realizes fast gear shifting, stronger power transmission continuity, rapid gear shifting, and short interruption time, which also improves fuel economy.

[0050] Please refer to Figure 1 and Figure 2 , Fig.12 and Fig.13 , including an assembled outer shell 8 and a bearing 9. The assembled outer shell 8 accommodates the second driven member 7 and the brake spindle 1. The bearing 9 is arranged between the assembled outer shell 8 and the brake spindle 1, and between the second transmission plate 720 and the assembled outer shell 8. The outer wall of the assembled outer shell 8 is provided with a mounting connection portion 810; the assembled outer shell 8 is provided with an oil pipeline 820 connected with the liquid inlet and outlet 120; the assembled outer shell 8 is provided with a avoidance hole for exposing the power receiving end 110, the first power output end 430, and the second power output end 730.

[0051] In some embodiments, the assembled outer shell 8 specifically includes a front shell 830 and a rear shell 840 . The joints of the front shell 830 and the rear shell 840 are provided with concave and convex mating edges, and the front shell 830 and the rear shell 840 are fastened together by a retaining spring ring 850 .

[0052] The oil delivery pipeline 820 is arranged on the front shell 830, and the inner cavity of the front shell 830 is provided with a plurality of step grooves, the number of the bearings 9 corresponds to the number of the step grooves, and the bearings 9 are arranged between the front shell 830 and the brake spindle 1 to improve the stability of the connection between the assembled outer shell 8 and the brake spindle 1. In order to further improve the stability of the bearing 9, an oil seal ring 15 is also provided to fix the bearing 9 and prevent the lubricating oil from leaking out. This closed and relatively fixed placement of the bearing 9 is more durable.

[0053] Without providing the assembly outer shell 8, the brake spindle 1 can also be rotatably connected to the corresponding installation position on the vehicle body through the bearing 9 to achieve the installation and fixation of the clutch.

[0054] In some embodiments, the mounting connection part 810 is an ear plate structure provided on the rear shell 840, and a screw hole is provided on the ear plate, so that the clutch can be standardized and unified, and can be installed on the vehicle body as a standard part. Unlike the traditional clutch, the clutch plate and the flywheel do not need to be separated by a certain distance, and the clutch process is completed in the drum of the outer shell 8. It has better performance and can be made smaller in size than the traditional clutch, reducing the space occupied.

[0055] Preferably, the assembly outer shell 8 is provided with hollow weight-reducing holes to facilitate heat dissipation and the flow of lubricating oil.

[0056] In some embodiments, the first piston drum 2 and the second piston drum 5 are driven by the pressure liquid in the hydraulic oil circuit; Alternatively, the hydraulic oil circuit is of a branch design, and the first piston drum 2 and the second piston drum 5 are independently driven by the pressure liquid of the corresponding hydraulic oil circuit.

[0057] Please refer to Figure 2 - Figure 4 , Figure 7 and Fig. 9 The first follower 4 and the second follower 7 are both cylindrical structures. The first follower 4 accommodates and encloses the first piston drum 2; the second follower 7 accommodates and encloses the first follower 4 and the second piston drum 5, and a third non-contact gap is provided between the first follower 4 and the second follower 7 to prevent the two from linking; the first transmission plate 420 is rotatably connected to the brake main shaft 1 through the bearing 9; the first transmission plate 420 and the second transmission plate 720 are rotatably connected through the bearing 9.

[0058] In terms of structural position, the first piston drum 2 is located between the second piston drum 5 and the first transmission plate 420. In terms of projection angle, the outer contour of the second piston drum 5 is larger than that of the first piston drum 2 and is in a stepped shape.

[0059] The cylindrical structure, i.e., a structure having a cylindrical annular wall and a circular bottom wall, has a substantially U-shaped cross section, and can have a sufficient contact area to abut against the first piston drum 2 and the second piston drum 5, and effectively connect them into one.

[0060] The second follower 7 is different from the first follower 4, which is a cylindrical structure with one end open. The second follower 7 is a cylindrical structure with an end cover 740, and the end cover 740 is connected to the end of the second annular wall 710 away from the second transmission plate 720. The outer ring of the end cover 740 is connected to the second annular wall 710, and the inner ring of the end cover 740 is rotatably connected to the brake spindle 1 through the bearing 9.

[0061] Please refer to Figure 1 - Figure 4 , including a first transmission shaft 10 and a second transmission shaft 11; the power receiving end 110 is an axial hole structure arranged at one end of the brake main shaft 1, and the axis of the axial hole coincides with the axis of the brake main shaft 1; the first power output end 430 is an axial hole structure arranged on the first transmission plate 420, and the second power output end 730 is an axial hole structure arranged on the second transmission plate 720, the second transmission shaft 11 is a hollow shaft, one end of the second transmission shaft 11 is cooperatively connected with the second power output end 730, and the first transmission shaft 10 passes through the inner hole of the second transmission shaft 11 and is connected with the first power output end 430.

[0062] In some preferred embodiments, the shaft hole structures are all shaft hole structures matching spline shafts. The first transmission shaft 10 and the second transmission shaft 11 are both spline shafts.

[0063] By coaxially arranging the shaft holes, the first transmission shaft 10, the second transmission shaft 11 and the brake main shaft 1, the running stability of the clutch is improved, eccentricity is not generated, the rotational transmission of power is highly balanced, and it has the advantage of bearing and transmitting large torque.

[0064] Furthermore, by designing the second transmission shaft 11 as a hollow shaft, the first transmission shaft 10 is cleverly arranged, and the first transmission shaft 10 and the second transmission shaft 11 do not conflict with each other.

[0065] Please refer to Figure 5 and Figure 6 , Fig.10 and Fig.11, including a guide member 12 connected to the first piston drum 2, the brake spindle 1 is provided with a guide portion 150 slidingly matched with the guide member 12; the first piston drum 2 moves relative to the brake spindle 1 along the guide direction of the guide member 12.

[0066] In some embodiments, the guide member 12 includes a smooth axis portion and a bolt portion. The guide member 12 is detachably connected to the first piston drum 2 via the bolt portion. The guide portion 150 is a guide hole provided on the brake spindle 1. The smooth axis portion and the guide hole form a guiding matching relationship, and together with the cylinder column 160 and the sliding hole 210, provide guidance for the moving direction of the first piston drum 2, thereby improving the operating accuracy of the clutch.

[0067] Similarly, the second piston drum 5 may also be provided with a guide member 12 , and the second clutch area 140 may also be provided with a corresponding guide portion 150 .

[0068] Please refer to Figure 2 and Figure 4 - Figure 6 , including a friction plate 13, wherein the friction plate 13 is connected to the first piston drum 2 and / or the first annular wall 410.

[0069] In some embodiments, the friction plate 13 is disposed on the outer wall of the first piston drum 2 opposite to the first annular wall 410 , and the first annular wall 410 is provided with friction lines corresponding to the friction plate 13 .

[0070] Please refer to Figure 5 and Figure 6 , Fig.10 , including a sealing gasket 14, the outer wall of the brake spindle 1 is provided with a cylinder column 160 whose inner hole is connected to the hydraulic oil circuit, and the first piston drum 2 is provided with a sliding hole 210 matching with the cylinder column 160; the sealing gasket 14 is sleeved on the end of the cylinder column 160.

[0071] In some embodiments, a connection groove is provided at the end of the cylinder column 160, and the sealing gasket 14 is sleeved in the connection groove to connect with the cylinder column 160. The sealing gasket 14 is convenient for preventing the pressure liquid from leaking from between the cylinder column 160 and the sliding hole 210, so that the pressure liquid effectively drives the first piston drum 2 to move.

[0072] By reasonably setting the length of the cylinder column 160 and the moving range of the first piston drum 2 relative to the brake spindle 1, there is no need to set a limiting structure in the sliding hole 210 to limit the cylinder column 160 from escaping from the sliding hole 210 like the cylinder setting to prevent the piston rod from escaping from the cylinder body.

[0073] Please refer to Figure 5 and Figure 6 , Figure 8 and Fig. 9There are three first piston drums 2 and three first reset members 3, which are evenly distributed along the circumferential direction of the axis of the brake spindle 1; each first reset member 3 connects two adjacent first piston drums 2, and the first reset member 3 is used to provide elastic tension.

[0074] In some embodiments, the first reset member 3 and the second reset member 6 are tension springs. The cross-sectional outer contour of the brake spindle 1 is roughly an isosceles triangle, and the vertex of the isosceles triangle is provided with a chamfer to provide a clearance for the tension spring.

[0075] Embodiment 2 Please refer to Figure 14-Figure 19 , including a limit plate 16, a buffer plate 17, and a buffer elastic member 18; the limit plate 16 is fixedly connected to the first follower 4, and receives the output power of the first power output end 430; the limit plate 16 and the buffer plate 17 are connected through the buffer elastic member 18; the limit plate 16 and / or the first follower 4 limit the buffer plate 17 when it rotates to a certain angle relative to the first follower 4; the buffer elastic member 18 provides elastic damping when the buffer plate 17 rotates relative to the limit plate 16; the buffer plate 17 is provided with a third power output end 1710.

[0076] Through this structure, a damping system is formed, so that when the power from the power receiving end 110 is transmitted to the third power output end 1710 through the first power output end 430, the elastic damping provided by the buffer elastic member 18 is obtained, so that when the car owner operates the clutch pedal to control the first piston drum 2 to press tightly against the first follower 4, the gearbox receives the power from the engine with flexible buffering, thereby preventing the car body from suddenly gaining power and violently shaking the car body, affecting the driving experience of the car owner.

[0077] Specifically, since the limit plate 16 is fixedly connected to the first driven member 4 and receives the output power of the first power output end 430, the limit plate 16 is connected to the buffer plate 17 through the buffer elastic member 18. When the limit plate 16 rotates with the first driven member 4, the limit plate 16 first compresses and drives the buffer elastic member 18 to move, and the buffer elastic member 18 also drives the limit plate 16 to rotate slightly until the limit compression of the buffer elastic member 18 is exceeded. During the whole process, the buffer plate 17 receives the power of the buffer elastic member 18 and changes from flexibility to rigidity. When the limit plate 16 and / or the first driven member 4 rotate the buffer plate 17 to a certain angle relative to the first driven member 4, the buffer plate 17 finally rotates synchronously with the first driven member 4 and the brake spindle 1, and the power of the buffer plate 17 is output to the gearbox through the third power output end 1710. Since the third power output end 1710 is integrated with the buffer plate 17, the third power output end 1710 also obtains the damping and buffering characteristics of the buffer plate 17.

[0078] It includes an assembled outer shell 8 and a bearing 9. The assembled outer shell 8 accommodates the first driven member 4 and the brake spindle 1. The bearing 9 is arranged between the assembled outer shell 8 and the brake spindle 1, and between the third power output end 1710 and the assembled outer shell 8. The assembled outer shell 8 is provided with an oil pipeline 820 connected with the liquid inlet and outlet 120. The assembled outer shell 8 is provided with a position avoidance hole for allowing the power receiving end 110 and the third power output end 1710 to be exposed. The buffer elastic member 18 is a cylindrical spring, and there are multiple of them, which are arranged circumferentially along the axis of the brake spindle 1; the limit plate 16 and the buffer plate 17 are both provided with a connecting accommodating groove 1650 corresponding to the cylindrical spring; the first transmission plate 420 is provided with a limit shaft 19, and the limit plate 16 is connected to the first transmission plate 420 through the limit shaft 19; the buffer plate 17 is arranged between the limit plate 16 and the first transmission plate 420; and the buffer plate 17 is provided with an active interval groove 1720 corresponding to the limit shaft 19; the first transmission plate 420 is provided with a avoidance groove 421 corresponding to the cylindrical spring.

[0079] When the buffer plate 17 rotates to the extreme angle relative to the first follower 4, the limit shaft 19 abuts against the groove wall of the active zone groove 1720 to prevent the buffer plate 17 from continuing to rotate; in this way, the buffer plate 17 and the first follower 4 rotate as a whole. At the same time, preferably, the buffer plate 17 and the limit plate 16 compress the cylindrical spring, and the cylindrical spring still has elastic margin.

[0080] In the specification and claims of the present application, the words "include / comprise" and the words "have / include" and their variations are used to specify the existence of stated features, values, steps or components, but do not exclude the existence or addition of one or more other features, values, steps, components or combinations thereof.

[0081] Some features of the present invention are described in different embodiments for clarity of description, however, these features may also be described in combination in a single embodiment. Conversely, some features of the present invention are described in a single embodiment for brevity, however, these features may also be described in different embodiments alone or in any suitable combination.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic drum clutch, characterized in that: include: A brake spindle, one end of which is provided with a power receiving end, a hydraulic oil circuit is provided inside the brake spindle, and a fluid inlet and outlet of the hydraulic oil circuit are provided on an outer wall of the brake spindle; A first piston drum, which is disposed on the outer periphery of the brake spindle and is slidably connected to the brake spindle; The first piston drum is driven to move away from the brake spindle by the pressure liquid in the hydraulic oil circuit; a first reset member, used for driving the first piston drum to move toward the brake spindle when the supply of pressure liquid to the hydraulic oil circuit driving the first piston drum to move away from the brake spindle is cancelled; The first follower comprises a first annular wall arranged around the outer circumference of the first piston drum and a first transmission plate connected to one end of the first annular wall; when the hydraulic oil circuit drives the first piston drum to move to a predetermined position in a direction away from the brake spindle, the first piston drum abuts against the first annular wall, and the brake spindle, the first piston drum and the first follower are connected as a whole; conversely, a first non-contact gap is provided between the first piston drum and the first annular wall; the first transmission plate is provided with a first power output end.

2. A hydraulic drum clutch according to claim 1, characterized in that: The invention comprises a second piston drum, a second reset member and a second follower; the first clutch area and the second clutch area are axially arranged on the brake main shaft; the first piston drum is arranged in the first clutch area; the second piston drum is arranged in the second clutch area, and the second piston drum is arranged on the outer periphery of the brake main shaft and is slidably connected with the brake main shaft; the second piston drum is driven to move in a direction away from the brake main shaft by the pressure liquid in the hydraulic oil circuit; when the pressure liquid supply of the hydraulic oil circuit driving the second piston drum to move in a direction away from the brake main shaft is cancelled, the second reset member is used to drive the second piston drum to move in a direction close to the brake main shaft; the second follower comprises a second annular wall arranged around the outer periphery of the second piston drum and a second transmission plate connected to one end of the second annular wall; when the hydraulic oil circuit drives the second piston drum to move to a predetermined position in a direction away from the brake main shaft, the second piston drum abuts against the second annular wall, and the brake main shaft, the second piston drum and the second follower are connected as a whole; on the contrary, there is a second non-contact gap between the second piston drum and the second annular wall; the second transmission plate is provided with a second power output end.

3. A hydraulic drum clutch according to claim 2, characterized in that: It includes an assembly outer shell and a bearing. The assembly outer shell accommodates the second driven member and the brake main shaft. The bearing is arranged between the assembly outer shell and the brake main shaft, and between the second transmission plate and the assembly outer shell. The outer wall of the assembly outer shell is provided with a mounting connection portion; the assembly outer shell is provided with an oil pipeline connected with the liquid inlet and outlet; the assembly outer shell is provided with a avoidance hole for accommodating the power receiving end, the first power output end, and the second power output end to be exposed.

4. A hydraulic drum clutch according to claim 2, characterized in that: The first piston drum and the second piston drum are driven by the pressure liquid in the hydraulic oil circuit; Alternatively, the hydraulic oil circuit is of branch design, and the first piston drum and the second piston drum are independently driven by the pressure liquid of the corresponding hydraulic oil circuit.

5. A hydraulic drum clutch according to claim 2, characterized in that: The first follower and the second follower are both cylindrical structures. The first follower accommodates and encloses the first piston drum; the second follower accommodates and encloses the first follower and the second piston drum, and a third non-contact gap is provided between the first follower and the second follower; the first transmission plate is rotatably connected to the brake spindle via a bearing; the first transmission plate is rotatably connected to the second transmission plate via a bearing.

6. A hydraulic drum clutch according to claim 2, characterized in that: It includes a first transmission shaft and a second transmission shaft; the power receiving end is an axial hole structure arranged at one end of the brake main shaft, and the axis of the axial hole coincides with the axis of the brake main shaft; the first power output end is an axial hole structure arranged at the first transmission plate, and the second power output end is an axial hole structure arranged at the second transmission plate, the second transmission shaft is a hollow shaft, one end of the second transmission shaft is cooperatively connected with the second power output end, and the first transmission shaft passes through the inner hole of the second transmission shaft and is connected with the first power output end.

7. A hydraulic drum clutch according to claim 1, characterized in that: It comprises a guide member connected to the first piston drum, and the brake spindle is provided with a guide portion which is slidably matched with the guide member; the first piston drum moves relative to the brake spindle along the guide direction of the guide member.

8. A hydraulic drum clutch according to claim 1, characterized in that: A friction plate is included, and the friction plate is connected to the first piston drum and / or the first annular wall.

9. A hydraulic drum clutch according to claim 1, characterized in that: It comprises a sealing gasket, the outer wall of the brake spindle is provided with a cylinder column whose inner hole is connected with the hydraulic oil circuit, the first piston drum is provided with a sliding hole matched with the cylinder column; the sealing gasket is sleeved on the end of the cylinder column.

10. A hydraulic drum clutch according to claim 1, characterized in that: There are three first piston drums and three first reset members, which are evenly distributed along the circumferential direction of the brake spindle axis. Each first reset member connects two adjacent first piston drums, and the first reset member is used to provide elastic tension.

11. A hydraulic drum clutch according to any one of claims 1 and 7 to 10, characterized in that: It includes a limit plate, a buffer plate, and a buffer elastic member; the limit plate is fixedly connected to the first follower and receives the output power of the first power output end; the limit plate and the buffer plate are connected through the buffer elastic member; the limit plate and / or the first follower limit the buffer plate when it rotates to a certain angle relative to the first follower; the buffer elastic member provides elastic damping when the buffer plate rotates relative to the limit plate; the buffer plate is provided with a third power output end.

12. A hydraulic drum clutch according to claim 11, characterized in that: It comprises an assembled outer shell and a bearing, wherein the assembled outer shell accommodates the first driven member and the brake spindle; the bearing is arranged between the assembled outer shell and the brake spindle, and between the third power output end and the assembled outer shell; the assembled outer shell is provided with an oil pipeline connected with the inlet and outlet; the assembled outer shell is provided with a position avoidance hole for accommodating the power receiving end and the third power output end to be exposed; The buffer elastic member is a cylindrical spring, and there are multiple of them, which are arranged circumferentially along the axis of the brake main shaft; the limit plate and the buffer plate are both provided with connecting and accommodating grooves corresponding to the cylindrical springs; the first transmission plate is provided with a limit shaft, and the limit plate is connected to the first transmission plate through the limit shaft; the buffer plate is arranged between the limit plate and the first transmission plate; and the buffer plate is provided with an active interval groove corresponding to the limit shaft; the first transmission plate is provided with an avoidance groove corresponding to the cylindrical spring.

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