Hydraulic motor with clutch function

Abstract

The utility model discloses a hydraulic motor with a clutch function, belongs to the technical field of driving equipment, and provides a hydraulic motor convenient to disconnect and connect a driven object, the hydraulic motor comprises a motor body, the end face where the output end of the motor body is located is fixedly connected with a shell through an oil cylinder, an oil cavity is formed in the oil cylinder, and a piston is arranged in the oil cavity; the end, opposite to the motor body, of the oil cylinder is a rear baffle ring, a clutch input shaft and a clutch output shaft are arranged in the shell, the clutch input shaft comprises a polished shaft, one end of the polished shaft penetrates through the piston to be connected with the output end of the motor body, the other end of the polished shaft is provided with an outer fluted disc, and a belleville spring located between the rear baffle ring and the piston is arranged in the oil cavity. According to the utility model, the existing motor is improved, the hydraulic multi-disc friction clutch is arranged at the output shaft end of the motor, and the belleville spring and hydraulic control are utilized, so that the motor has the functions of being connected with and separated from a driven object, the driven object can be conveniently and independently operated, and the flexibility is good.

Description

Technical Field

[0001] The present application relates to the technical field of drive equipment, and in particular to a hydraulic motor with a clutch function. Background Art

[0002] At present, traditional hydraulic motors generally do not have a clutch disengagement function. Once the power is lost or the motor is damaged, the output end will not be able to rotate. When it is necessary to adjust the angle of the driven object after the hydraulic motor stops, this limitation will be very inconvenient. Summary of the invention

[0003] The object of the present application is to provide a hydraulic motor that is convenient for disconnecting and connecting a driven object.

[0004] In order to achieve the above purpose, the present application provides a hydraulic motor with a clutch function: comprising a motor body, wherein the end face where the output end of the motor body is located is fixedly connected to a shell through an oil cylinder, the oil cylinder has an oil chamber, a piston is arranged in the oil chamber, the end of the oil cylinder opposite to the motor body is a rear baffle ring, a clutch input shaft and a clutch output shaft are arranged in the shell, the clutch input shaft comprises an optical axis, one end of the optical axis passes through the piston and is connected to the output end of the motor body, the other end of the optical axis has an outer gear disk, the outer gear disk is covered with an inner gear friction plate, the clutch output shaft comprises a sleeve rotatably connected to the shell, the sleeve One end located in the shell is fixedly connected with an inner gear plate through a rotating disk, and an outer gear friction plate is embedded in the inner gear plate. A disc spring located between the rear baffle ring and the piston is arranged in the oil chamber, and the piston is suitable for pressing the inner gear friction plate and the outer gear friction plate together under the elastic force of the disc spring, so that the clutch input shaft drives the clutch output shaft. An oil port connected to the oil chamber is provided on the outer surface of the oil cylinder, which is suitable for filling the oil chamber with hydraulic oil to allow the piston to overcome the elastic force of the disc spring, thereby releasing the state in which the inner gear friction plate and the outer gear friction plate are pressed, thereby realizing the power connection and disconnection function between the motor and the driven object.

[0005] As a preferred embodiment, the outer side surface of the outer gear disc has spline teeth, and the inner side surface of the inner gear friction plate is provided with tooth grooves, which are suitable for fitting with the spline teeth of the outer gear disc to form a sliding pair, and the inner gear friction plate can only move along the axis relative to the outer gear disc, and cannot rotate relative to the outer gear disc.

[0006] As a preference, the inner side surface of the inner gear disc has spline teeth, and the outer side surface of the outer gear friction plate is provided with tooth grooves, which are suitable for fitting with the spline teeth of the inner gear disc to form a sliding pair. Similarly, they can move relative to each other but cannot rotate relative to each other.

[0007] As a preferred embodiment, there are a plurality of inner-tooth friction plates and a plurality of outer-tooth friction plates, and the inner-tooth friction plates and the outer-tooth friction plates are arranged at intervals, so as to transmit a greater torque.

[0008] As a preferred embodiment, the clutch input shaft is coaxial with the clutch output shaft, the end face of the outer gear plate has an end shaft, a stabilizing bearing is arranged in the center of the turntable, and the end shaft is rotatably connected to the turntable through the stabilizing bearing, which can effectively improve the stability of the front end of the clutch input shaft.

[0009] Preferably, the piston comprises an integral hollow plug rod and a hollow plug ring, a spline hole is provided at the output end of the motor body, and the end of the optical axis has a spline shaft suitable for passing through the hollow plug rod and the hollow plug ring and plugging with the output end of the motor body. This design has a very compact structure and there is no interference.

[0010] As a preference, the oil cylinder further comprises a front baffle ring, the hollow plug ring is located between the rear baffle ring and the front baffle ring, and the inner walls of the oil chamber and the front baffle ring are both provided with sealing rings to prevent oil leakage.

[0011] As a preferred embodiment, the piston applies pressure to the inner tooth friction plate and the outer tooth friction plate through a pressure piece, and the pressure piece includes a linkage ring sleeved on the hollow plug rod, a force transmission bearing is arranged between the inner wall of the linkage ring and the outer side surface of the hollow plug rod, and a movable pressure ring is fixedly connected to the end face of the linkage ring, which is suitable for applying extrusion force to the inner tooth friction plate and the outer tooth friction plate to engage the clutch.

[0012] Preferably, the pressure member further comprises a fixed pressure ring fixed on the end surface of the turntable, which is suitable for resisting the inner-tooth friction plate and the outer-tooth friction plate to limit the maximum movement distance of the friction plate.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] (1) By improving the existing motor, a hydraulic multi-disc friction clutch is installed at the output shaft end of the motor, and the disc spring and hydraulic control are used to enable the motor to have the function of engaging and disengaging with the driven object, which is convenient for operating the driven object separately and has good flexibility;

[0015] (2) The clutch mechanism of the motor has a normally closed engagement state, high transmission stability, compact internal structure, and small overall volume. It does not occupy much space when working, so it is relatively convenient to configure and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a plan cross-sectional view of the hydraulic motor with clutch function in the assembled state;

[0017] Figure 2 A planar cross-sectional view of the piston and cylinder of the hydraulic motor with clutch function;

[0018] Figure 3 A planar cross-sectional view of the clutch input shaft and output shaft of the hydraulic motor with clutch function;

[0019] Figure 4 A planar cross-sectional view of a clutch input shaft of the hydraulic motor with clutch function;

[0020] Figure 5 It is a planar cross-sectional view of the clutch output shaft of the hydraulic motor with clutch function.

[0021] In the figure: 1. motor body; 2. oil cylinder; 201. oil port; 202. oil chamber; 203. rear baffle ring; 204. front baffle ring; 205. sealing ring; 3. disc spring; 4. piston; 401. hollow plug rod; 402. hollow plug ring; 5. clutch input shaft; 501. spline shaft; 502. smooth axis; 503. outer gear disc; 504. end shaft; 505. inner gear friction plate; 6. clutch output shaft; 601. bushing; 602. turntable; 603. stabilizing bearing; 604. inner gear disc; 605. outer gear friction plate; 7. pressure piece; 701. linkage ring; 702. force transmission bearing; 703. movable pressure ring; 704. fixed pressure ring; 8. housing. DETAILED DESCRIPTION

[0022] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0025] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0026] like Figure 1-5 The hydraulic motor with clutch function shown in the figure includes a motor body 1 which uses hydraulic pressure as power. The end face where the output end of the motor body 1 is located is fixedly connected to a housing 8 through an oil cylinder 2. An oil chamber 202 is provided in the oil cylinder 2. A piston 4 is arranged in the oil chamber 202. The outer side surface of the piston 4 is in close contact with the inner wall of the oil chamber 202, dividing the oil chamber 202 into two parts. A clutch input shaft 5 and a clutch output shaft 6 are arranged in the housing 8. The clutch input shaft 5 is coaxial with the clutch output shaft 6, and the two are rotationally connected.

[0027] The clutch input shaft 5 includes an optical axis 502, one end of which passes through the piston 4 and is connected to the output end of the motor body 1. A spline hole is provided at the output end of the motor body 1, and the piston 4 includes an integral and coaxial hollow plug rod 401 and a hollow plug ring 402. The end of the optical axis 502 has a spline shaft 501, which can pass through the hollow plug rod 401 and the hollow plug ring 402 and then be plugged with the output end of the motor body 1. The cylinder 2 also has a front baffle ring 204, and the hollow plug ring 402 is located between the rear baffle ring 203 and the front baffle ring 204. The inner walls of the oil chamber 202 and the front baffle ring 204 are both provided with sealing rings 205. The sealing ring 205 on the inner wall of the oil chamber 202 is used to fit tightly against the outer side surface of the hollow plug ring 402, and the sealing ring 205 on the inner wall of the front baffle ring 204 is used to fit tightly against the outer side surface of the hollow plug rod 401, so as to prevent the hydraulic oil in the oil chamber 202 from overflowing through the fitting gap.

[0028] The other end of the optical axis 502 has an outer gear disc 503, and the outer gear disc 503 is covered with an inner gear friction plate 505. In fact, the outer side surface of the outer gear disc 503 has spline teeth, and the spline teeth are straight teeth. The inner side surface of the inner gear friction plate 505 is provided with tooth grooves, and the number and position of the tooth grooves correspond to the spline teeth, which just fit with the spline teeth of the outer gear disc 503 to form a sliding pair, so that the inner gear friction plate 505 can move along the axis of the outer gear disc 503. The clutch output shaft 6 includes a housing 8 that rotates The end surface of the sleeve 601 outside the housing 8 is provided with a coaxial spline hole for engaging with an external shaft body to transmit the power of the hydraulic motor. The end of the sleeve 601 inside the housing 8 is fixedly connected to an inner toothed disc 604 through a rotating disc 602. The inner toothed disc 604 is embedded with an outer toothed friction plate 605. In fact, the outer toothed friction plate 605, the rotating disc 602 and the sleeve 601 are an integrated structure. The inner side surface of the inner toothed disc 604 also has a straight The outer side surface of the outer friction plate 605 is also provided with corresponding tooth grooves, which fit together with the spline teeth of the inner gear disc 604 to form a sliding pair, so that the outer friction plate 605 can move along the axis of the inner gear disc 604. There are several inner friction plates 505 and outer friction plates 605. Usually, the number of inner friction plates 505 and outer friction plates 605 is equal. The inner friction plates 505 will be arranged at intervals with the outer friction plates 605, so that the total contact area between the inner friction plates 505 and the outer friction plates 605 is the largest, which can effectively disperse the friction force of the transmitted torque, thereby transmitting a larger torque. The end face of the outer gear disc 503 also has an end shaft 504, and a coaxial stabilizing bearing 603 is arranged in the center of the turntable 602. In fact, the end shaft 504 is rotatably connected to the turntable 602 through the stabilizing bearing 603, so that both ends of the clutch input shaft 5 are constrained and have good stability.

[0029] One end of the oil cylinder 2 facing the motor body 1 is a rear baffle ring 203, and a disc spring 3 is provided in the oil chamber 202 between the rear baffle ring 203 and the piston 4, which can generate a strong axial elastic force. The piston 4 can press the inner tooth friction plate 505 and the outer tooth friction plate 605 together under the elastic force of the disc spring 3, so that the clutch structure is in an engaged state, so that the clutch input shaft 5 can drive the clutch output shaft 6 to rotate.

[0030] The piston 4 actually applies pressure to the inner tooth friction plate 505 and the outer tooth friction plate 605 through the pressure member 7. The pressure member 7 includes a linkage ring 701 sleeved on the hollow plug rod 401. A force transmission bearing 702 is arranged between the inner wall of the linkage ring 701 and the outer side surface of the hollow plug rod 401. The inner ring of the force transmission bearing 702 is stuck in the step groove on the outer side surface of the hollow plug rod 401, and the outer ring of the force transmission bearing 702 is stuck in the step groove on the inner wall of the linkage ring 701. Under normal circumstances, the axial position of the linkage ring 701 relative to the hollow plug rod 401 will not change, and the linkage ring 701 can only rotate relative to the hollow plug rod 401. When the ring 701 rotates with the friction plate, even if the piston 4 cannot rotate, the hindering effect of the hollow plug rod 401 on the linkage ring 701 is minimal. The end face of the linkage ring 701 is fixedly connected with a movable pressure ring 703, which is used to directly apply extrusion pressure to the inner tooth friction plate 505 and the outer tooth friction plate 605. The pressure member 7 also includes a fixed pressure ring 704 fixed on the end face of the turntable 602. The fixed pressure ring 704 and the movable pressure ring 703 are separate and are respectively located at the two ends of all the friction plates. The fixed pressure ring 704 is used to resist the inner tooth friction plate 505 and the outer tooth friction plate 605, and provide support for all the friction plates under pressure.

[0031] The outer surface of the oil cylinder 2 is provided with an oil port 201 connected to the oil chamber 202 for filling the oil chamber 202 with hydraulic oil to allow the piston 4 to overcome the elastic force of the disc spring 3, thereby releasing the state of pressing the inner tooth friction plate 505 and the outer tooth friction plate 605.

[0032] Working principle: This winch is mainly suitable for the following special working conditions. When the motor loses power and the linkage between the driven object and the motor needs to be disconnected, the clutch device can be disengaged and the parts driven by the motor can be pulled to rotate by external force. The hydraulic motor body 1 is connected to the clutch input shaft 5 through a spline. The outer ring of the clutch input shaft 5 has spline teeth, which are connected to the inner spline teeth of the inner tooth friction plate 505. The outer spline teeth of the outer tooth friction plate 605 are connected to the inner spline on the clutch output shaft 6. The disc spring 3 presses the piston 4 to combine the inner tooth friction plate 505 and the outer tooth friction plate 605. At this time, the clutch is in the engaged state; when the hydraulic oil is introduced into the control oil port 201, the piston 4 moves backward under the push of the oil pressure, overcomes the elastic force of the disc spring 3, and releases the pressure piece 7. The pressure between the tooth friction plate 505 and the outer tooth friction plate 605 disappears, and the two sets of friction plates are in a disengaged state. They can rotate relative to each other, but cannot transmit torque. At this time, the clutch is disengaged, and the clutch output shaft 6 can rotate freely under the drive of external force. The driven object connected to the clutch output shaft 6 can be easily rotated for adjustment. After the adjustment is completed, the hydraulic oil in the cylinder 2 is withdrawn, the disc spring 3 is extended, and the clutch will return to the normally closed engagement state, and the inner tooth friction plate 505 will use the relative friction force to transmit the rotational power to the outer tooth friction plate 605.

[0033] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A hydraulic motor with clutch function, characterized in that: The invention comprises a motor body (1), wherein the end surface of the output end of the motor body (1) is fixedly connected to a housing (8) via an oil cylinder (2), wherein the oil cylinder (2) has an oil chamber (202), wherein a piston (4) is arranged in the oil chamber (202), wherein the end of the oil cylinder (2) facing the motor body (1) is a rear baffle ring (203), wherein a clutch input shaft (5) and a clutch output shaft (6) are arranged in the housing (8), wherein the clutch input shaft (5) comprises an optical axis (502), wherein one end of the optical axis (502) passes through the piston (4) and is connected to the output end of the motor body (1), wherein the other end of the optical axis (502) comprises an outer toothed disc (503), wherein the outer toothed disc (503) is covered with an inner toothed friction plate (505), wherein the clutch output shaft (6) comprises a shaft sleeve (601) rotatably connected to the housing (8), wherein the shaft sleeve (601) ) is fixedly connected to an inner toothed disc (604) at one end located in the housing (8) through a rotating disc (602), and an outer toothed friction plate (605) is embedded in the inner toothed disc (604). A disc spring (3) is provided in the oil chamber (202) and is located between the rear baffle ring (203) and the piston (4). The piston (4) is suitable for pressing the inner toothed friction plate (505) and the outer toothed friction plate (605) together under the elastic force of the disc spring (3), so that the clutch input shaft (5) drives the clutch output shaft (6). The outer surface of the oil cylinder (2) is provided with an oil port (201) connected to the oil chamber (202), which is suitable for filling the oil chamber (202) with hydraulic oil so that the piston (4) overcomes the elastic force of the disc spring (3), thereby releasing the state in which the inner toothed friction plate (505) and the outer toothed friction plate (605) are pressed together.

2. The hydraulic motor with clutch function according to claim 1, characterized in that: The outer side surface of the outer gear disc (503) is provided with spline teeth, and the inner side surface of the inner gear friction plate (505) is provided with tooth grooves suitable for fitting with the spline teeth of the outer gear disc (503) to form a sliding pair.

3. The hydraulic motor with clutch function as claimed in claim 2, characterized in that: The inner side surface of the inner gear disc (604) is provided with spline teeth, and the outer side surface of the outer gear friction plate (605) is provided with tooth grooves suitable for fitting with the spline teeth of the inner gear disc (604) to form a sliding pair.

4. The hydraulic motor with clutch function as claimed in claim 3, characterized in that: There are a plurality of inner-tooth friction plates (505) and a plurality of outer-tooth friction plates (605), and the inner-tooth friction plates (505) and the outer-tooth friction plates (605) are arranged at intervals.

5. The hydraulic motor with clutch function as claimed in claim 4, characterized in that: The clutch input shaft (5) is coaxial with the clutch output shaft (6), the end face of the outer gear disk (503) has an end shaft (504), a stabilizing bearing (603) is arranged in the center of the turntable (602), and the end shaft (504) is rotatably connected to the turntable (602) via the stabilizing bearing (603).

6. The hydraulic motor with clutch function as claimed in any one of claims 1 to 5, characterized in that: The piston (4) comprises an integral hollow plug rod (401) and a hollow plug ring (402); a spline hole is provided at the output end of the motor body (1); and the end of the optical axis (502) has a spline shaft (501) suitable for passing through the hollow plug rod (401) and the hollow plug ring (402) to be plugged into the output end of the motor body (1).

7. The hydraulic motor with clutch function according to claim 6, characterized in that: The oil cylinder (2) also has a front baffle ring (204), the hollow plug ring (402) is located between the rear baffle ring (203) and the front baffle ring (204), and the inner walls of the oil chamber (202) and the front baffle ring (204) are both provided with sealing rings (205).

8. The hydraulic motor with clutch function according to claim 7, characterized in that: The piston (4) applies pressure to the inner tooth friction plate (505) and the outer tooth friction plate (605) through a pressure member (7); the pressure member (7) comprises a linkage ring (701) sleeved on the hollow plug rod (401); a force transmission bearing (702) is arranged between the inner wall of the linkage ring (701) and the outer side surface of the hollow plug rod (401); and a movable pressure ring (703) is fixedly connected to the end surface of the linkage ring (701), which is suitable for applying extrusion force to the inner tooth friction plate (505) and the outer tooth friction plate (605).

9. The hydraulic motor with clutch function as claimed in claim 8, characterized in that: The pressure member (7) further comprises a fixed pressure ring (704) fixed on the end surface of the rotating disk (602), which is suitable for resisting the inner tooth friction plate (505) and the outer tooth friction plate (605).

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