Hydraulic control one-way clutch

Abstract

The utility model belongs to the technical field of clutches, and particularly relates to a hydraulic control one-way clutch which comprises a rotating shaft, a first gear fixedly arranged on the rotating shaft, a second gear capable of rotating relative to the rotating shaft and a one-way clutch assembly connected with the first gear and the second gear. The one-way clutch assembly comprises an outer seat ring, an inner seat ring, a retainer and an execution oil cylinder, wherein a pin roller and an elastic piece are arranged on the retainer; a plurality of limiting grooves are formed in the inner circumferential wall of the outer race, and wedge-shaped inclined faces are formed on the sides, in the circumferential direction of the outer race, of the limiting grooves. When the execution oil cylinder drives the retainer to rotate to a first position, the first gear on the rotating shaft can be combined with the second gear to rotate; and when the retainer rotates to the second position, the first gear and the second gear on the rotating shaft rotate freely. The executing oil cylinder is fixedly arranged on the end face of the first gear, the executing oil cylinder is connected with the retainer through the shifting rod, the shifting head of the shifting rod is embedded into the notch in the retainer, and the gear shifting mechanism is simple in structure and convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a hydraulically controlled one-way clutch. Background Art

[0002] Automatic transmissions generally achieve speed ratio changes by changing the power transmission path after selective actuation of one or more friction elements. The friction element may include a one-way clutch configured to selectively transmit torque in a first direction and to interrupt torque transmission in the opposite direction.

[0003] The one-way clutch includes an outer race, an inner race, a retainer, a locking assembly on the retainer, and an actuator for driving the retainer. The actuator drives the retainer to be located at different positions to determine the locking and unlocking states of the inner race and the outer race. When the inner race and the outer race are locked by the retainer and the locking assembly, the outer race needs to rotate with the inner race; when the inner race and the outer race are unlocked, the outer race and the race can rotate freely. The existing connection structure between the actuator and the retainer is relatively complex and inconvenient to assemble. Utility Model Content

[0004] Based on this, the utility model provides a hydraulically controlled one-way clutch, the actuator cylinder of which is connected to a retaining frame via a simple connection structure to improve the problem of inconvenience in equipment.

[0005] The embodiment of the utility model provides a hydraulically controlled one-way clutch, comprising a rotating shaft, a first gear fixed on the rotating shaft, a second gear rotatably connected to the rotating shaft, and a one-way clutch assembly for connecting the first gear and the second gear, wherein the one-way clutch assembly comprises:

[0006] An outer race, arranged coaxially with the first gear and fixed to the end surface of the first gear facing the second gear, a plurality of limiting grooves are formed on the inner peripheral wall of the outer race, and a wedge-shaped inclined surface is formed on one side of the limiting groove along the circumference of the outer race;

[0007] An inner race, rotatably disposed on the inner side of the outer race and fixedly connected to the second gear;

[0008] A retainer is rotatably disposed between the outer race and the inner race, a plurality of mounting holes are provided on the outer peripheral wall of the retainer corresponding to the limiting grooves, a roller and an elastic member are provided in the mounting through hole, and the elastic member pushes the roller to abut against a side wall of the mounting through hole along the circumferential direction;

[0009] an actuator cylinder, fixedly arranged on the end surface of the first gear close to the second gear, for driving the retainer to rotate to the first position or the second position; when the retainer is in the first position, the mounting through hole is close to the wedge-shaped inclined surface, and the elastic member pushes the roller clamp to abut against the wedge-shaped inclined surface, so that the outer race and the inner race are locked; when the retainer is in the second position, the mounting through hole is away from the wedge-shaped inclined surface, and the roller in the mounting through hole is separated from the wedge-shaped inclined surface, so that the outer race and the inner race are unlocked;

[0010] The actuator cylinder is connected to the retaining frame via an L-shaped shifting rod, the shifting rod includes a rod portion and a shifting head, the rod portion is connected to the actuator cylinder, and the shifting head is used to connect to the retaining frame; a protrusion is formed on the end surface of the retaining frame facing the first gear, and a notch adapted to the shifting head is formed on the protruding portion, and the shifting head is arranged in the notch.

[0011] In some embodiments, the actuator cylinder includes a cylinder body, a piston rod and a return spring. An oil inlet hole is opened on one side of the cylinder body close to the bottom, and hydraulic oil is supplied to the oil inlet hole to push the piston rod to extend out of the head of the cylinder body, thereby pushing the retaining frame to rotate to the first position; the return spring is located on the side of the piston rod close to the head of the cylinder body, and the return spring is used to push the piston rod to retract into the cylinder body, thereby pushing the retaining frame to rotate to the second position.

[0012] In some embodiments, the inner circumferential wall of the second gear is connected to the rotating shaft through a first bearing, and the second gear protrudes on the end surface close to the first gear to form a limiting step, and the inner race is fixedly connected to the second gear through the limiting step.

[0013] In some embodiments, the end of the first bearing close to the first gear abuts against the first shoulder of the rotating shaft, and a first pressure ring is provided at the other end of the first bearing. The first shoulder and the first pressure ring are used to limit the axial movement of the first bearing.

[0014] In some embodiments, the end of the retaining frame close to the first gear is limited by a limiting bolt, and the limiting bolt extends from the outside of the outer seat ring into the inside of the outer seat ring; the end of the retaining frame close to the second gear is provided with a second pressure ring, and the limiting bolt cooperates with the second pressure ring to limit the axial movement of the retaining frame.

[0015] In some embodiments, a second bearing and a third bearing are further provided on the rotating shaft, one end of the second bearing abuts against the first pressure ring, and the other end of the second bearing is provided with a second retaining ring, and the second retaining ring is arranged in a second retaining groove opened on the rotating shaft; the third bearing is arranged on the side of the first gear away from the second gear, and a second shoulder is formed on the rotating shaft corresponding to the third bearing, and the third bearing is arranged on the second shoulder.

[0016] In some embodiments, the one-way clutch also includes an actuator oil circuit for delivering hydraulic oil to the actuator cylinder, the actuator oil circuit including a first actuator oil channel extending from the end surface of the rotating shaft close to the first gear to the interior of the rotating shaft, a second actuator oil channel extending from the first actuator oil channel to the first gear, a third actuator oil channel located at the first gear away from the second gear, and a fourth actuator oil channel extending from the third actuator oil channel to the actuator cylinder.

[0017] In some embodiments, a cover plate is attached to the end surface of the first gear away from the second gear, the third actuator oil channel is formed between the first gear and the cover plate, and the fourth actuator oil channel runs from the end surface of the first gear away from the second gear to the end surface close to the second gear, so as to connect the third actuator oil channel and the actuator oil cylinder.

[0018] In some embodiments, the one-way clutch also includes a cooling oil circuit for conveying cooling oil, the cooling oil circuit including a first cooling oil channel extending from the end surface of the rotating shaft close to the first gear to the interior of the rotating shaft, and a second cooling oil channel extending from the first cooling oil channel to the outer peripheral wall of the rotating shaft, and the oil outlet end of the second cooling oil channel is located between the first gear and the second gear.

[0019] In some embodiments, the cooling oil circuit further includes a third cooling oil channel extending from the first cooling oil channel to the first bearing.

[0020] In the hydraulically controlled one-way clutch of the utility model, the clutch state is controlled by the outer race, the inner race, the actuator oil cylinder, and the elastic member and roller on the retaining frame. When the actuator oil cylinder drives the retaining frame to rotate to the first position, the elastic member pushes the roller to abut against the wedge-shaped inclined surface on the outer race, and the outer race and the inner race are locked, so that the first gear on the rotating shaft can rotate in conjunction with the second gear; when the actuator oil cylinder drives the retaining frame to rotate to the second position, the roller is separated from the wedge-shaped inclined surface, and the outer race and the inner race are unlocked, so that the first gear and the second gear on the rotating shaft can rotate freely. The actuator oil cylinder is connected to the retaining frame through a lever, and the lever head of the lever is embedded in the notch on the retaining frame. The structure is simple and easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1is a schematic cross-sectional structure diagram of the hydraulically controlled one-way clutch of this embodiment;

[0022] Figure 2 It is a structural schematic diagram of the execution oil circuit inside the hydraulically controlled one-way clutch;

[0023] Figure 3 It is a schematic diagram of the structure of the cooling oil circuit inside the hydraulically controlled one-way clutch;

[0024] Figure 4 It is a structural schematic diagram of the connection between the actuator and the retaining frame;

[0025] Figure 5 It is a schematic diagram of the structure when the inner race and the outer race are locked;

[0026] Figure 6 It is a structural diagram of the actuator cylinder.

[0027] In the figure: shaft 10; first gear 20; second gear 21; outer race 30; limiting groove 301; wedge-shaped inclined surface 302; inner race 31; retaining frame 32; protrusion 321; actuator cylinder 33; cylinder body 331; piston rod 332; return spring 333; oil inlet hole 334; lever 34; elastic member 35; roller 36; first bearing 40; second bearing 41; third bearing 42; first pressure ring 50; second pressure ring 51; limiting bolt 52; cover plate 53; first retaining ring 60; second retaining ring 61; first actuator oil channel 70; second actuator oil channel 71; third actuator oil channel 72; fourth actuator oil channel 73; first cooling oil channel 80; second cooling oil channel 81; third cooling oil channel 82. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is described in detail in some embodiments in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0030] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] like Figure 1-3 As shown, this embodiment provides a hydraulically controlled one-way clutch, including a rotating shaft 10, a first gear 20 fixed on the rotating shaft 10, a second gear 21 rotatable relative to the rotating shaft 10, and a one-way clutch assembly connecting the first gear 20 and the second gear 21.

[0032] The outer peripheral wall of the first gear 20 of this embodiment is formed with an active tooth portion, and the first gear 20 is fixedly connected to the rotating shaft 10, and the outer peripheral wall of the first gear 20 is formed with an active tooth portion. The outer peripheral wall of the second gear 21 of this embodiment is formed with a driven tooth portion, and the second gear 21 is rotatably connected to the rotating shaft 10 through the first bearing 40. The one-way clutch assembly is used to control the clutch state of the first gear 20 and the second gear 21. When the first gear 20 is engaged with the second gear 21, the first gear 20 and the second gear 21 on the rotating shaft 10 rotate freely; when the first gear 20 is disconnected from the second gear 21, the first gear 20 and the second gear 21 on the rotating shaft 10 rotate freely. The first gear 20 and the rotating shaft 10 of this embodiment are preferably designed to be integrally formed. Compared with the split first gear 20 and the rotating shaft 10, this embodiment omits the assembly steps of the first gear 20 and the rotating shaft 10, and effectively ensures that the first gear 20 and the rotating shaft 10 remain relatively stationary.

[0033] See Figure 1-3 The one-way clutch assembly of this embodiment includes an outer seat ring 30, an inner seat ring 31, a retaining frame 32 and an actuator cylinder 33. The outer seat ring 30 is fixedly arranged on the end surface of the first gear 20 facing the second gear 21, and the outer seat ring 30 is coaxially arranged with the first gear 20. The first gear 20 is preferably formed with an annular groove on the end surface facing the second gear 21, and a convex ring is formed on the outer peripheral wall of the end corresponding to the outer seat ring 30, and the convex ring is clamped in the annular groove to keep the outer seat ring 30 fixed to the first gear 20. It should be noted that some embodiments can also use conventional means such as bolts or welding to fix the outer seat ring 30 to the first gear 20 according to needs, which will not be repeated in this embodiment.

[0034] The inner race 31 of this embodiment is rotatably disposed inside the outer race 30 and fixedly connected to the second gear 21. The inner peripheral wall of the second gear 21 is connected to the rotating shaft 10 through the first bearing 40. The second gear 21 preferably protrudes from the end surface close to the first gear 20 to form a limiting step, and the inner race 31 is fixedly connected to the second gear 21 through the limiting step.

[0035] In this embodiment, the end of the first bearing 40 close to the first gear 20 preferably abuts against the first shoulder of the rotating shaft 10, and a first pressure ring 50 is provided at the other end of the first bearing 40. The first shoulder and the first pressure ring 50 are used to limit the axial movement of the first bearing 40 to ensure the stability of the assembly of the first bearing 40.

[0036] See Figure 5 In this embodiment, the retaining frame 32 is rotatably arranged between the outer race 30 and the inner race 31. A plurality of mounting through holes are opened on the outer peripheral wall of the retaining frame 32. The plurality of mounting through holes are arranged at intervals along the circumference of the retaining frame 32. Rollers 36 and elastic members 35 are arranged in the mounting through holes. The rollers 36 are rotatably arranged between the transmission sleeve and the inner race 31. The elastic member 35 pushes the rollers 36 along the circumferential direction to abut against one side wall of the mounting through holes.

[0037] In this embodiment, a plurality of limiting grooves 301 are formed on the inner circumferential wall of the outer race 30 corresponding to the rollers 36. The limiting grooves 301 are used to limit the movable space of the rollers 36. The limiting grooves 301 are formed with wedge-shaped inclined surfaces 302 along one side of the circumference of the outer race 30. The wedge-shaped inclined surfaces 302 can cooperate with the outer circumferential wall of the inner race 31 to clamp the rollers 36.

[0038] In this embodiment, the end of the retaining frame 32 close to the first gear 20 is preferably limited by a limiting bolt 52, and the limiting bolt 52 extends from the outside of the outer race 30 into the inside of the outer race 30; the end of the retaining frame 32 close to the second gear 21 is provided with a second pressure ring 51, and the limiting bolt 52 and the second clamping ring 61 are used to limit the axial movement of the retaining frame 32 to ensure the stability of the assembly of the retaining frame 32. The side of the second pressure ring 51 away from the retaining frame 32 is preferably provided with a first clamping ring 60, which is arranged in a first clamping groove opened on the outer race 30, and the first clamping ring 60 can limit the second pressure ring 51 and facilitate assembly.

[0039] The first gear 20 of this embodiment is fixed with an actuator cylinder 33, which is used to drive the holder 32 to rotate, so that the holder 32 rotates to the first position or the second position. When the holder 32 is in the first position, the installation through hole is close to the wedge-shaped inclined surface 302 and the roller 36 is pushed by the spring to abut against the wedge-shaped inclined surface 302, so that the outer race 30 and the inner race 31 are locked by the roller 36; when the holder 32 is in the second position, the installation through hole is away from the wedge-shaped inclined surface 302, and the roller 36 in the installation hole is separated from the wedge-shaped inclined surface 302, so that the outer race 30 and the inner race 31 are unlocked.

[0040] See Figure 6 The actuator oil cylinder 33 of this embodiment includes a cylinder body 331, a piston rod 332 and a return spring 333. An oil inlet hole 334 is provided on one side of the cylinder body 331 near the bottom. Hydraulic oil is introduced into the oil inlet hole 334 to push the piston rod 332 out of the head of the cylinder body 331. The return spring 333 is located on the side of the piston rod 332 near the head of the cylinder body 331, that is, away from the oil inlet hole 334. The return spring 333 pushes the piston rod 332 to retract into the cylinder body 331. When oil is supplied, the hydraulic oil fills the cylinder body 331 and exerts pressure on the piston rod 332, so that the piston rod 332 overcomes the force of the return spring 333 to extend out of the cylinder body 331; after the oil supply is cancelled, the return spring 333 pushes the piston rod 332 to return. The actuator oil cylinder 33 drives the retaining frame 32 to rotate so that the clutch maintains different states. The actuator oil cylinder 33 has a low oil pressure requirement, and the corresponding hydraulic system has low energy consumption. The number of the actuator cylinders 33 is preferably two, and the two actuator cylinders 33 are arranged in a circular array on the end surface of the first gear 20. It should be noted that the number of the actuator cylinders 33 can be set to one or more according to actual needs.

[0041] See Figure 2 and Figure 4 In this embodiment, the front end of the piston rod 332 is provided with a lever 34 connected to the retainer 32. The lever 34 is preferably L-shaped, specifically including a rod portion and a lever head. The rod portion of the lever 34 is connected to the piston rod 332, and the lever head of the lever 34 is used to connect the retainer 32; the end surface of the retainer 32 facing the first gear 20 forms a protrusion 321, and the protrusion 321 is provided with a notch adapted to the lever head. The lever head is arranged in the notch and transmits the force to the retainer 32 through the protrusion 321. The connection structure between the actuator cylinder 33 and the retainer 32 is simple and easy to assemble.

[0042] The actuator cylinder 33 of this embodiment preferably pushes the retainer 32 to rotate to the first position when the piston rod 332 extends out of the cylinder body 331. At this time, hydraulic oil is supplied in the cylinder body 331, and the outer race 30 and the inner race 31 between the first gear 20 and the second gear 21 are locked. The actuator cylinder 33 pushes the retainer to rotate to the second position when the piston rod 332 retracts into the cylinder body 331. At this time, no hydraulic oil is supplied in the cylinder body 331, and the outer race 30 and the inner race 31 between the first gear 20 and the second gear 21 are unlocked. The actuator cylinder 33 drives the retainer 32 to the first position when supplying oil, which can ensure that the state of the retainer 32 is stable and the outer race 30 and the inner race 31 are firmly locked.

[0043] The rotating shaft 10 of this embodiment is also provided with a second bearing 41 and a third bearing 42, and the second bearing 41 and the third bearing 42 enable the rotating shaft 10 to be rotatably assembled to the desired position. One end of the second bearing 41 is preferably in contact with the first pressure ring 50, and the other end of the second bearing 41 is provided with a second retaining ring 61. A second retaining groove is provided on the rotating shaft 10, and the retaining ring is arranged in the second retaining groove. The second retaining ring 61 and the first pressure ring 50 are used to limit the axial movement of the second bearing 41. The third bearing 42 of this embodiment is preferably arranged on the side of the first gear 20 away from the second gear 21, and the rotating shaft 10 is formed with a second shaft shoulder corresponding to the third bearing 42, and the third bearing 42 is arranged on the second shaft shoulder, which is convenient for assembly. It should be noted that the second bearing 41 and the third bearing 42 can select other conventional connection methods according to needs, which will not be repeated in this embodiment.

[0044] The one-way clutch of this embodiment also includes an oil circuit structure, which includes an oil circuit for conveying hydraulic oil to the actuator cylinder 33 and a cooling oil circuit for conveying cooling oil. The actuator oil circuit includes a first actuator oil passage 70 extending from the end face of the rotating shaft 10 close to the first gear 20 to the inside of the rotating shaft 10, a second actuator oil passage 71 extending from the first actuator oil passage 70 to the first gear 20, a third actuator oil passage 72 located at the first gear 20 away from the second gear 21, and a fourth actuator oil passage 73 extending from the third actuator oil passage 72 to the actuator cylinder 33. Among them, a cover plate 53 is attached to the end face of the first gear 20 away from the second gear 21, the third actuator oil passage 72 is formed between the first gear 20 and the cover plate 53, and the fourth actuator oil passage 73 runs from the end face of the first gear 20 away from the second gear 21 to the end face close to the second gear 21, so as to connect the third actuator oil passage 72 and the cylinder body 331 of the actuator cylinder 33, and the structure of the actuator oil passage is convenient for processing. The third actuating oil passage 72 of this embodiment is preferably an annular groove provided on the surface of the cover plate 53 for easy processing. It should be noted that the third actuating oil passage 72 can be a groove / hole structure provided only on the first gear 20 or a groove structure provided on both the first gear 20 and the cover plate 53; the structures of the third actuating oil passage 72 and the fourth actuating oil passage 73 can be adjusted according to the structure and design requirements of the clutch, which will not be described in detail in this embodiment.

[0045] The cooling oil circuit of this embodiment includes a first cooling oil channel 80 extending from the end face of the rotating shaft 10 close to the first gear 20 to the inside of the rotating shaft 10, and a second cooling oil channel 81 extending from the first cooling oil channel 80 to the outer peripheral wall of the rotating shaft 10. The oil outlet end of the second cooling oil channel 81 is located between the first gear 20 and the second gear 21, so that the cooling oil can be supplied to the roller 36 on the retaining frame 32, so that the working temperature is stable, the operation is smooth, and the service life is long. The cooling oil circuit of this embodiment also includes a third cooling oil channel 82 extending from the first cooling oil channel 80 to the first bearing 40. The third cooling oil channel 82 is used to transport cooling oil to the first bearing 40, thereby improving the service life of the first bearing 40.

[0046] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A hydraulically controlled one-way clutch, It is characterized in that The invention comprises a rotating shaft (10), a first gear (20) fixed on the rotating shaft (10), a second gear (21) rotatably connected to the rotating shaft (10), and a one-way clutch assembly for connecting the first gear (20) and the second gear (21), wherein the one-way clutch assembly comprises: An outer race (30) is coaxially arranged with the first gear (20) and fixed to the end surface of the first gear (20) facing the second gear (21), a plurality of limiting grooves (301) are formed on the inner peripheral wall of the outer race (30), and a wedge-shaped inclined surface (302) is formed on one side of the limiting groove (301) along the circumference of the outer race (30); An inner race (31) rotatably disposed on the inner side of the outer race (30) and fixedly connected to the second gear (21); A retaining frame (32) is rotatably disposed between the outer race (30) and the inner race (31); a plurality of mounting through holes are provided on the outer peripheral wall of the retaining frame (32) corresponding to the limiting groove (301); a roller (36) and an elastic member (35) are provided in the mounting through hole; the elastic member (35) pushes the roller (36) in the circumferential direction to abut against a side wall of the mounting through hole; The actuator cylinder (33) is fixedly arranged on the end surface of the first gear (20) close to the second gear (21), and is used to drive the retaining frame (32) to rotate to the first position or the second position; when the retaining frame (32) is located at the first position, the mounting through hole is close to the wedge-shaped inclined surface (302), and the elastic member (35) pushes the roller (36) to abut against the wedge-shaped inclined surface (302), so that the outer race (30) and the inner race (31) are locked; when the retaining frame (32) is located at the second position, the mounting through hole is away from the wedge-shaped inclined surface (302), and the roller (36) in the mounting through hole is separated from the wedge-shaped inclined surface (302), so that the outer race (30) and the inner race (31) are unlocked; The actuator cylinder (33) is connected to the retaining frame (32) via an L-shaped shifting rod (34); the shifting rod (34) comprises a rod portion and a shifting head; the rod portion is connected to the actuator cylinder (33); the shifting head is used to connect to the retaining frame (32); a protrusion (321) is formed on the end surface of the retaining frame (32) facing the first gear (20); a notch matched with the shifting head is formed on the protrusion (321); the shifting head is arranged in the notch.

2. The hydraulically controlled one-way clutch according to claim 1, Features: The actuator cylinder (33) includes a cylinder body (331), a piston rod (332) and a return spring (333); an oil inlet hole (334) is provided on one side of the cylinder body (331) close to the bottom, and hydraulic oil is supplied to the oil inlet hole (334) to push the piston rod (332) out of the head of the cylinder body (331), thereby pushing the retaining frame (32) to rotate to the first position; the return spring (333) is located on the side of the piston rod (332) close to the head of the cylinder body (331), and the return spring (333) is used to push the piston rod (332) to retract into the cylinder body (331), thereby pushing the retaining frame to rotate to the second position.

3. The hydraulically controlled one-way clutch according to claim 2, Features: The inner peripheral wall of the second gear (21) is connected to the rotating shaft (10) via a first bearing (40); the second gear (21) protrudes on an end surface close to the first gear (20) to form a limiting step, and the inner race (31) is fixedly connected to the second gear (21) via the limiting step.

4. The hydraulically controlled one-way clutch according to claim 3, Features: The end of the first bearing (40) close to the first gear (20) abuts against a first shoulder of the rotating shaft (10), and a first pressure ring (50) is provided at the other end of the first bearing (40). The first shoulder and the first pressure ring (50) are used to limit the axial movement of the first bearing (40).

5. The hydraulically controlled one-way clutch according to claim 4, Features: One end of the retaining frame (32) close to the first gear (20) is limited by a limiting bolt (52), and the limiting bolt (52) extends from the outer side of the outer seat ring (30) into the interior of the outer seat ring (30); one end of the retaining frame (32) close to the second gear (21) is provided with a second pressure ring (51), and the limiting bolt (52) cooperates with the second pressure ring (51) to limit the axial movement of the retaining frame (32).

6. The hydraulically controlled one-way clutch according to claim 5, Features: The rotating shaft (10) is also provided with a second bearing (41) and a third bearing (42); one end of the second bearing (41) is in contact with the first pressure ring (50); the other end of the second bearing (41) is provided with a second retaining ring (61); the second retaining ring (61) is arranged in a second retaining groove provided on the rotating shaft (10); the third bearing (42) is arranged on a side of the first gear (20) away from the second gear (21); the rotating shaft (10) is formed with a second shaft shoulder corresponding to the third bearing (42), and the third bearing (42) is arranged on the second shaft shoulder.

7. The hydraulically controlled one-way clutch according to claim 3, Features: It also includes an actuating oil circuit for conveying hydraulic oil to the actuating oil cylinder (33), the actuating oil circuit including a first actuating oil passage (70) extending from the end surface of the rotating shaft (10) close to the first gear (20) to the interior of the rotating shaft (10), a second actuating oil passage (71) extending from the first actuating oil passage (70) to the first gear (20), a third actuating oil passage (72) located at a position of the first gear (20) away from the second gear (21), and a fourth actuating oil passage (73) extending from the third actuating oil passage (72) to the actuating oil cylinder (33).

8. The hydraulically controlled one-way clutch according to claim 7, Features: A cover plate (53) is attached to the end surface of the first gear (20) away from the second gear (21); the third actuating oil passage (72) is formed between the first gear (20) and the cover plate (53); and the fourth actuating oil passage (73) extends from the end surface of the first gear (20) away from the second gear (21) to the end surface close to the second gear (21) so as to connect the third actuating oil passage (72) and the actuating oil cylinder (33).

9. The hydraulically controlled one-way clutch according to claim 8, Features: It also includes a cooling oil circuit for conveying cooling oil, the cooling oil circuit including a first cooling oil channel (80) extending from the end surface of the rotating shaft (10) close to the first gear (20) to the interior of the rotating shaft (10), and a second cooling oil channel (81) penetrating from the first cooling oil channel (80) to the outer peripheral wall of the rotating shaft (10), and the oil outlet end of the second cooling oil channel (81) is located between the first gear (20) and the second gear (21).

10. The hydraulically controlled one-way clutch according to claim 9, Features: The cooling oil circuit also includes a third cooling oil passage (82) extending from the first cooling oil passage (80) to the first bearing (40).

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