Hydraulic actuator with clutch device

Abstract

The hydraulic actuator with the clutch device comprises a support cylinder cover assembly, the top of the support cylinder cover assembly is fixedly connected with a hydraulic cylinder, the inner wall of the hydraulic cylinder is connected with a piston in a sliding and sealing mode, the outer wall of the bottom end of the piston is fixedly connected with a piston operating rod, and the bottom end of the piston operating rod is fixedly connected with an adapter substitute. The outer wall of the top of the hydraulic cylinder is fixedly connected with an upper cylinder cover through a bolt, the top of a piston is rotationally connected with a driving rod, the outer wall of the driving rod is fixedly connected with a clutch handle, and the inner wall of a fixing seat is fixedly connected with a locking nut. Opening and closing of the locking nut are achieved through rotation of the driving rod, the locking nut is separated from the driving rod in the separated state, hydraulic operation can be carried out, the locking nut is meshed with the operating rod in the closed state, operation can be carried out through a hand wheel at the moment, and operation convenience and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic actuators, in particular to a hydraulic actuator with a clutch device. Background Art

[0002] Hydraulic actuators play a crucial role in the modern industrial field and are widely used. In construction machinery, such as excavators, cranes and other equipment, hydraulic actuators are used to realize operations such as the extension and excavation of the excavating arm, the lifting and slewing of the lifting arm, etc. In the existing hydraulic actuators, there is no clutch device, so that during operation, it is not convenient to disconnect between the control valve rod and the fixed seat, thus it is not convenient to adjust the lifting of the hydraulic actuator control piston, and it is not convenient to automatically control the piston. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a hydraulic actuator with a clutch device to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A hydraulic actuator with a clutch device includes a support cylinder head assembly. The top of the support cylinder head assembly is fixedly connected with a hydraulic cylinder. The inner wall of the hydraulic cylinder is slidably and sealedly connected with a piston. The bottom outer wall of the piston is fixedly connected with a piston operating rod. The bottom end of the piston operating rod is fixedly connected with a conversion joint. The top outer wall of the hydraulic cylinder is fixedly connected with an upper cylinder head through bolts. The top of the piston is rotatably connected with a driving rod. The outer wall of the driving rod is fixedly connected with a clutch handle. The inner wall of the fixed seat is fixedly connected with a lock nut. When the outer wall of the driving rod is threadedly connected with the lock nut, the pressure actuator is in a closed state.

[0006] In a preferred embodiment of the utility model, a top block is fixedly connected to the top of the piston. The inner wall of the top block is rotatably connected with the driving rod. The top of the upper cylinder head is fixedly connected with a fixed seat through an inner hexagonal screw.

[0007] In a preferred embodiment of the utility model, a thrust ball bearing is rotatably connected to the inner wall of the fixed seat. A bushing is connected to the inner wall of the thrust ball bearing. The outer wall of the driving rod is slidably connected with the inner wall of the bushing.

[0008] In a preferred embodiment of the utility model, the outer wall of the piston operating rod and the inner wall of the bottom of the hydraulic cylinder are slidably and sealedly connected through an O-ring. The outer wall of the piston and the inner wall of the hydraulic cylinder are sealed through a second O-ring.

[0009] In a preferred embodiment of the utility model, the connection between the outer wall of the piston operating rod and the inner wall of the upper cylinder head is sealed through a third O-ring in cooperation. A handwheel is fixedly installed on the outer wall of the driving rod.

[0010] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model.

[0011] By providing a clutch locking device, the opening and closing of the locking nut is achieved by rotating the driving rod. In the separated state of the locking nut, it is separated from the driving rod, and hydraulic operation can be performed. In the closed state, the locking nut meshes with the operating rod, and at this time, operation can be performed through the handwheel, improving the convenience and safety of operation. Description of the Drawings

[0012] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0013] Figure 1 It is a schematic cross-sectional structure diagram of a hydraulic actuator with a clutch device;

[0014] Figure 2 It is a schematic working structure diagram of the locking nut in a hydraulic actuator with a clutch device;

[0015] Figure 3 It is a schematic working structure diagram of the piston in a hydraulic actuator with a clutch device.

[0016] In the figure: bracket cylinder head assembly 1, adapter 2, piston operating rod 3, O-ring 4, second O-ring 5, piston 7, top block 8, hydraulic cylinder 9, third O-ring 10, upper cylinder head 11, bolt 12, fixed seat 14, thrust ball bearing 15, bushing 16, handwheel 17, clutch handle 18, locking nut 24, driving rod 25, socket head cap screw 26. Detailed Embodiment

[0017] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0018] Embodiment 1: As Figures 1 - 3, including a support cylinder head assembly 1, a hydraulic cylinder 9 is fixedly connected to the top of the support cylinder head assembly 1, a piston 7 is slidably and sealingly connected to the inner wall of the hydraulic cylinder 9, a piston operating rod 3 is fixedly connected to the outer wall of the bottom end of the piston 7, a conversion joint 2 is fixedly connected to the bottom end of the piston operating rod 3, an upper cylinder head 11 is fixedly connected to the outer wall of the top of the hydraulic cylinder 9 by bolts 12, a driving rod 25 is rotatably connected to the top of the piston 7, a clutch handle 18 is fixedly connected to the outer wall of the driving rod 25, a locking nut 24 is fixedly connected to the inner wall of the fixed seat 14, and when the outer wall of the driving rod 25 is threadedly connected with the locking nut 24, the pressure actuator is in a closed state.

[0019] The specific use scenario of this embodiment is as follows: By arranging a locking nut 24 on the inner wall of the fixed seat 14 to cooperate with the outer wall of the driving rod 25 through threaded connection, it is convenient to rotate the driving rod 25 by holding the clutch handle 18, so that the driving rod 25 can be engaged and separated from the locking nut 24, thereby controlling the clutch of the driving rod 25. A new clutch locking device is added. The opening and closing of the locking nut 24 are realized by rotating the driving rod 25. In the separated state of the locking nut 24, it is separated from the driving rod, and hydraulic operation can be carried out; in the closed state, the locking nut is engaged with the operating rod, and at this time, it can be operated by a handwheel, improving the convenience and safety of the operation.

[0020] Embodiment 2: As Figure 2 and Figure 3 , a top block 8 is fixedly connected to the top of the piston 7, a driving rod 25 is rotatably connected to the inner wall of the top block 8, a fixed seat 14 is fixedly connected to the top of the upper cylinder head 11 by an inner hexagon screw 26, a thrust ball bearing 15 is rotatably connected to the inner wall of the fixed seat 14, a bushing 16 is connected to the inner wall of the thrust ball bearing 15, the outer wall of the driving rod 25 is slidably connected to the inner wall of the bushing 16, the outer wall of the piston operating rod 3 and the inner wall of the bottom of the hydraulic cylinder 9 are slidably and sealingly connected by an O-ring 4, the outer wall of the piston 7 and the inner wall of the hydraulic cylinder 9 are sealed by a second O-ring 5, the connection between the outer wall of the piston operating rod 3 and the inner wall of the upper cylinder head 11 is sealingly connected by a third O-ring 10 in cooperation, and a handwheel 17 is fixedly installed on the outer wall of the driving rod 25.

[0021] The specific usage scenario of this embodiment is as follows: By connecting the upper cylinder head 11 and the top of the hydraulic cylinder 9 with bolts 12, the compressive resistance effect of the hydraulic cylinder 9 is improved, and the sealing performance is enhanced. By providing a drive rod 25 to control the lifting of the piston 7 to adjust the height, and at the same time having a guiding effect on the piston 7, the stability of the piston 7 during lifting is improved. By providing a bushing 16 and a thrust ball bearing 15 to be rotatably connected in cooperation, it is convenient to reduce the friction on the drive rod 25 and improve the protection effect on the drive rod 25. By providing an O-ring 4, a second O-ring 5, and a third O-ring 10, the sealing effect is improved. By providing a handwheel 17 to control the rotation of the drive rod 25, it is convenient to adjust the lifting of the piston 7 to adjust the height.

[0022] The working principle of the present utility model is as follows: When those skilled in the art use it, they rotate the drive rod 25 through the clutch handle 18, so that the drive rod 25 is threadedly engaged or separated from the lock nut 24. When the lock nut 24 and the drive rod 25 are engaged, the handwheel 17 can be rotated by hand to manually control the drive rod 25 to push the piston 7 to lift and adjust the height inside the hydraulic cylinder 9. Thus, the piston 7 drives the piston operating rod 3 to lift and adjust the height, thereby controlling the opening and closing of the internal passage of the hydraulic actuator. By reversely rotating the clutch handle 18, after the drive rod 25 and the lock nut 24 are separated, the piston 7 is controlled to lift under the action of the hydraulic pressure inside the hydraulic cylinder 9, which is convenient for controlling the clutch separation of the hydraulic actuator.

[0023] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A hydraulic actuator with a clutch device, comprising a support cylinder head assembly (1), wherein the top of the support cylinder head assembly (1) is fixedly connected to a hydraulic cylinder (9), and it is characterized in that, The inner wall of the hydraulic cylinder (9) is slidably and sealingly connected to the piston (7). The outer wall of the bottom end of the piston (7) is fixedly connected to the piston operating rod (3). The bottom end of the piston operating rod (3) is fixedly connected to the adapter (2). The outer wall of the top of the hydraulic cylinder (9) is fixedly connected to the upper cylinder head (11) by bolts (12). The top of the piston (7) is rotatably connected to the drive rod (25). The outer wall of the drive rod (25) is fixedly connected to the clutch handle (18). The inner wall of the fixed seat (14) is fixedly connected to the locking nut (24). When the outer wall of the drive rod (25) is threadedly connected with the locking nut (24), the pressing actuator is in a closed state.

2. The hydraulic actuator with a clutch device according to claim 1, characterized in that, The top of the piston (7) is fixedly connected to the top block (8). The inner wall of the top block (8) is rotatably connected to the drive rod (25). The top of the upper cylinder head (11) is fixedly connected to the fixed seat (14) by socket head cap screws (26).

3. The hydraulic actuator with a clutch device according to claim 2, characterized in that, The inner wall of the fixed seat (14) is rotatably connected to the thrust ball bearing (15). The inner wall of the thrust ball bearing (15) is connected to the bushing (16). The outer wall of the drive rod (25) is slidably connected to the inner wall of the bushing (16).

4. The hydraulic actuator with a clutch device according to claim 3, characterized in that, The outer wall of the piston operating rod (3) and the inner wall of the bottom of the hydraulic cylinder (9) are slidably and sealingly connected by an O-ring (4). The outer wall of the piston (7) and the inner wall of the hydraulic cylinder (9) are sealingly connected by a second O-ring (5).

5. The hydraulic actuator with a clutch device according to claim 4, characterized in that, The connection between the outer wall of the piston operating rod (3) and the inner wall of the upper cylinder head (11) is sealingly connected by a third O-ring (10). A handwheel (17) is fixedly installed on the outer wall of the drive rod (25).

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