Hydraulic actuator

Abstract

The utility model relates to the field of hydraulic actuators, in particular to a hydraulic actuator which comprises an actuating cavity assembly, a driving assembly, a rotating assembly and two driven assemblies, the driving assembly is arranged to work under the condition of thrust, then the pressure of liquid located in two driven cavity bodies is changed, and the hydraulic actuator is driven to rotate. The two driven assemblies work at the same time to drive the rotating assembly to rotate, the lower end of the rotating assembly can be connected with a valve and the like, the rotating assembly rotates to drive the valve to rotate, and then opening and closing of the valve are achieved; through the arrangement, the rotating efficiency of the rotating assembly can be higher, so that the opening and closing efficiency of the valve is higher, and the probability that execution of the hydraulic actuator is blocked is reduced.

Description

Technical Field

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

[0002] Hydraulic actuators use hydraulic transmission as power. Their notable feature is that they have a large driving force, but they are bulky and only suitable for specific occasions that require a large driving force, such as the ship valves of the Three Gorges Dam. The operation of hydraulic actuators requires the support of an external hydraulic system. Existing hydraulic actuators have the following main disadvantages:

[0003] Traditional hydraulic actuators are easily affected by resistance during execution and have low execution efficiency.

[0004] In view of the above problems, a hydraulic actuator is now provided. Utility Model Content

[0005] The purpose of the utility model is to provide a hydraulic actuator to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] Provided is a hydraulic actuator, comprising an actuator cavity assembly, an active assembly, a rotating assembly and two driven assemblies, wherein the active assembly is fixedly connected to one side of the actuator cavity assembly, the rotating assembly is rotatably connected in the inner cavity of the actuator cavity assembly, and the two driven assemblies are slidably connected to the two sides of the inner cavity of the actuator cavity assembly;

[0008] The execution chamber assembly comprises a body and two covers, and two ends of the body are fixedly connected to the two covers respectively;

[0009] A rotating cavity and two driven cavities are provided in the inner cavity of the main body. The two driven cavities are located on both sides of the rotating cavity. The two driven components are respectively slidably connected in the two driven cavities, and the rotating component is rotatably connected in the rotating cavity.

[0010] Furthermore, connection holes are respectively opened on one side of both ends of the body, and the active components are fixedly connected to the two connection holes respectively. A rotating connection hole is opened at the lower end of the body, and the lower end of the rotating component is rotatably connected in the rotating connection hole.

[0011] Furthermore, the active component includes a piston, an active extrusion chamber, a leak-proof cover, a connecting tube and a right-angle connecting tube, one end of the connecting tube is fixedly connected to one end of the active extrusion chamber, the other end of the connecting tube is fixedly connected in a connecting hole, one end of the right-angle connecting tube is fixedly connected to one side of the active extrusion chamber, the other end of the right-angle connecting tube is fixedly connected in another connecting hole, the piston is slidably connected in the cavity of the active extrusion chamber, and the leak-proof cover is fixedly connected to the other end of the active extrusion chamber.

[0012] Furthermore, a first connecting hole is opened at one end of the active extrusion chamber, one end of the connecting tube is fixedly connected in the first connecting hole, a second connecting hole is opened on one side of the other end of the active extrusion chamber, and one end of the right-angle connecting tube is fixedly connected in the second connecting hole.

[0013] Furthermore, the rotating assembly includes a rotating shaft and a gear, the gear is fixedly connected to the rotating shaft, and one end of the rotating shaft is rotatably connected in the rotating connection hole.

[0014] Furthermore, the two driven components include a first piston, a spring, a limit plate and a rack, the limit plate is fixedly connected to one end of the first piston, the first piston is located in the driven chamber, the limit plate is located in the rotating chamber, the rack is fixedly connected to the limit plate, the rack is meshed with the gear, and the end of the spring is fixedly connected to the piston.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a hydraulic actuator, which sets an active component to work when it is subjected to a thrust, thereby causing the liquid pressure in two driven chambers to change, so that the two driven components work at the same time, and the two driven components work simultaneously to drive the rotating component to rotate, and the lower end of the rotating component can be connected to a valve, etc., and the valve is driven to rotate by the rotation of the rotating component, thereby realizing the opening and closing of the valve. When the active component is subjected to a pulling force, the rotating component rotates in the opposite direction. Such a setting can make the rotating component rotate more efficiently, thereby making the valve opening and closing more efficient, thereby reducing the probability of the hydraulic actuator being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a sectional view of the overall three-dimensional structure of the main body of the utility model;

[0019] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the active component of the utility model;

[0020] Figure 4This is a schematic diagram of the overall three-dimensional structure of the active extrusion chamber of the utility model;

[0021] Figure 5 It is a schematic diagram of the overall three-dimensional structure of the rotating assembly of the utility model;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Executing chamber assembly; 11. Main body; 110. Rotating connecting hole; 111. Rotating chamber; 112. Driven chamber; 113. Connecting hole; 12. Cover;

[0024] 2. Active component; 21. Piston; 22. Active extrusion chamber; 221. First connecting hole; 222. Second connecting hole; 23. Leak-proof cover; 24. Connecting pipe; 25. Right-angle connecting pipe;

[0025] 3. Rotating assembly; 31. Rotating shaft; 32. Gear;

[0026] 4. Driven assembly; 41. First piston; 42. Spring; 43. Limit plate; 44. Rack. Implementation

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] The utility model provides the following preferred embodiments:

[0029] Reference Figure 1 As shown, a hydraulic actuator comprises an actuating chamber assembly 1, an active assembly 2, a rotating assembly 3 and two driven assemblies 4, wherein the active assembly 2 is fixedly connected to one side of the actuating chamber assembly 1, the rotating assembly 3 is rotatably connected in the inner cavity of the actuating chamber assembly 1, and the two driven assemblies 4 are slidably connected to the two sides of the inner cavity of the actuating chamber assembly 1;

[0030] The execution chamber assembly 1 comprises a body 11 and two covers 12, and two ends of the body 11 are fixedly connected to the two covers 12 respectively;

[0031] A rotating chamber 111 and two driven chambers 112 are provided in the inner chamber of the body 11 . The two driven chambers 112 are located on both sides of the rotating chamber 111 . The two driven components 4 are slidably connected in the two driven chambers 112 , respectively. The rotating component 3 is rotatably connected in the rotating chamber 111 .

[0032] The active component 2 works under the condition of being subjected to thrust, thereby causing the liquid pressure in the two driven chambers 112 to change, so that the two driven components 4 work at the same time, and the rotating component 3 is driven to rotate by the two driven components 4 working at the same time. The lower end of the rotating component 3 can be connected to a valve, etc., and the valve is driven to rotate by the rotation of the rotating component 3, thereby realizing the opening and closing of the valve. When the active component 2 is subjected to pulling force, the rotating component 3 rotates in the opposite direction. This arrangement can make the rotating component 3 rotate more efficiently, thereby making the valve opening and closing more efficient, thereby reducing the probability of the hydraulic actuator being blocked.

[0033] Reference Figure 2 As shown, connection holes 113 are respectively opened on one side of both ends of the body 11, and the active components 2 are fixedly connected to the two connection holes 113 respectively. A rotating connection hole 110 is opened at the lower end of the body 11, and the lower end of the rotating component 3 is rotatably connected in the rotating connection hole 110.

[0034] Through the action of the active component 2 , the liquid can enter the active component 2 through the two connecting holes 113 , or enter the body 11 by rotating the connecting hole 110 , thereby changing the liquid pressure in the body 11 .

[0035] Reference Figure 3 As shown, the active component 2 includes a piston 21, an active extrusion chamber 22, a leak-proof cover 23, a connecting tube 24 and a right-angle connecting tube 25, one end of the connecting tube 24 is fixedly connected to one end of the active extrusion chamber 22, the other end of the connecting tube 24 is fixedly connected in a connecting hole 113, one end of the right-angle connecting tube 25 is fixedly connected to one side of the active extrusion chamber 22, the other end of the right-angle connecting tube 25 is fixedly connected in another connecting hole 113, the piston 21 is slidably connected in the cavity of the active extrusion chamber 22, and the leak-proof cover 23 is fixedly connected to the other end of the active extrusion chamber 22.

[0036] Through the action of thrust or pull, the piston 21 moves left and right, so that the liquid on the left and right sides of the piston 21 changes, so that liquid passes through the connecting hole 113 fixedly connected to the active extrusion chamber 22, so that the liquid enters and exits the driven chamber 112.

[0037] Reference Figure 4 As shown, a first connecting hole 221 is opened at one end of the active extrusion chamber 22, one end of the connecting tube 24 is fixedly connected in the first connecting hole 221, a second connecting hole 222 is opened on one side of the other end of the active extrusion chamber 22, and one end of the right-angle connecting tube 25 is fixedly connected in the second connecting hole 222.

[0038] One end of the connecting tube 24 is fixedly connected in the first connecting hole 221 , and one end of the right-angle connecting tube 25 is fixedly connected in the second connecting hole 222 .

[0039] Reference Figure 5 As shown, the rotating assembly 3 includes a rotating shaft 31 and a gear 32 . The gear 32 is fixedly connected to the rotating shaft 31 . One end of the rotating shaft 31 is rotatably connected in the rotating connection hole 110 .

[0040] The rotation of the gear 32 drives the rotating shaft 31 to rotate, so that the other end of the rotating shaft 31 drives the valve to rotate, thereby realizing the opening and closing of the valve.

[0041] The two driven components 4 include a first piston 41, a spring 42, a limit plate 43 and a rack 44. The limit plate 43 is fixedly connected to one end of the first piston 41. The first piston 41 is located in the driven chamber 112. The limit plate 43 is located in the rotating chamber 111. The rack 44 is fixedly connected to the limit plate 43. The rack 44 is meshed with the gear 32. The spring 42 is fixedly connected to the piston 21 at its end.

[0042] The change of the liquid in the driven chamber 112 cooperates with the primary spring 42 to make the piston 21 move left and right, thereby driving the limit plate 43 to move left and right, and the gear 32 rotates through the meshing action of the rack 44 and the gear 32.

[0043] The beneficial effects of the present invention are specifically embodied in that 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, improvements, etc. 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 actuator, characterized in that: It comprises an execution chamber assembly (1), an active assembly (2), a rotating assembly (3) and two driven assemblies (4), wherein the active assembly (2) is fixedly connected to one side of the execution chamber assembly (1), the rotating assembly (3) is rotationally connected in the inner cavity of the execution chamber assembly (1), and the two driven assemblies (4) are slidably connected to both sides of the inner cavity of the execution chamber assembly (1); The execution chamber assembly (1) comprises a body (11) and two covers (12), and two ends of the body (11) are respectively fixedly connected to the two covers (12); A rotating chamber (111) and two driven chambers (112) are provided in the inner chamber of the body (11), the two driven chambers (112) are located on both sides of the rotating chamber (111), the two driven assemblies (4) are respectively slidably connected in the two driven chambers (112), and the rotating assembly (3) is rotatably connected in the rotating chamber (111).

2. A hydraulic actuator according to claim 1, characterized in that: The body (11) is provided with connection holes (113) at one side of both ends, the active components (2) are fixedly connected to the two connection holes (113) respectively, the lower end of the body (11) is provided with a rotation connection hole (110), and the lower end of the rotation component (3) is rotationally connected in the rotation connection hole (110).

3. A hydraulic actuator according to claim 2, characterized in that: The active component (2) comprises a piston (21), an active extrusion chamber (22), a leak-proof cover (23), a connecting tube (24) and a right-angle connecting tube (25); one end of the connecting tube (24) is fixedly connected to one end of the active extrusion chamber (22); the other end of the connecting tube (24) is fixedly connected to a connecting hole (113); one end of the right-angle connecting tube (25) is fixedly connected to one side of the active extrusion chamber (22); the other end of the right-angle connecting tube (25) is fixedly connected to another connecting hole (113); the piston (21) is slidably connected to the cavity of the active extrusion chamber (22); and the leak-proof cover (23) is fixedly connected to the other end of the active extrusion chamber (22).

4. A hydraulic actuator according to claim 3, characterized in that: A first connection hole (221) is formed at one end of the active extrusion chamber (22), one end of the connection tube (24) is fixedly connected in the first connection hole (221), a second connection hole (222) is formed on one side of the other end of the active extrusion chamber (22), and one end of the right-angle connection tube (25) is fixedly connected in the second connection hole (222).

5. A hydraulic actuator according to claim 4, characterized in that: The rotating assembly (3) comprises a rotating shaft (31) and a gear (32); the gear (32) is fixedly connected to the rotating shaft (31); and one end of the rotating shaft (31) is rotatably connected in a rotating connection hole (110).

6. A hydraulic actuator according to claim 5, characterized in that: The two driven assemblies (4) comprise a first piston (41), a spring (42), a limit plate (43) and a rack (44); the limit plate (43) is fixedly connected to one end of the first piston (41); the first piston (41) is located in the driven chamber (112); the limit plate (43) is located in the rotating chamber (111); the rack (44) is fixedly connected to the limit plate (43); the rack (44) is meshed with the gear (32); and the end of the spring (42) is fixedly connected to the piston (21).

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