Angular stroke hydraulic actuator and hydraulic system
By physically coordinating a rotation acquisition unit and a circumferential cam rotation unit in a hydraulic actuator, the problem of detection error in traditional hydraulic actuators is solved, achieving the effect of accurate detection of valve opening without sensors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU NIPOD NEW ENERGY TECH CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-10
AI Technical Summary
When traditional hydraulic actuators use electronic sensors at the valve to detect the valve opening, errors can easily occur between the detected value and the actual value.
Design an angular stroke hydraulic actuator. By setting a rotation acquisition unit in the valve body and physically cooperating with the circumferential cam rotation unit, the axial movement unit converts linear movement into rotational motion, accurately detecting the movement of the load.
It enables accurate detection of valve opening without electronic sensors, reducing detection errors and improving the accuracy of hydraulic systems.
Smart Images
Figure CN224479359U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hydraulic technology, specifically relating to valves, and more particularly to an angular stroke hydraulic actuator and hydraulic system. Background Technology
[0002] Traditional hydraulic actuators use the pressure of hydraulic oil to push the valve core, and an electronic sensor is installed at the valve to detect the valve opening. However, the electronic sensor itself has a response time, which causes errors between the detected value and the actual value.
[0003] Therefore, there is an urgent need to develop a new angular stroke hydraulic actuator and hydraulic system to avoid the technical problem that the traditional hydraulic actuator's use of electronic sensors at the valve to detect valve opening can easily lead to errors between the detected value and the actual value.
[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0005] This disclosure provides at least one angular stroke hydraulic actuator and hydraulic system.
[0006] In a first aspect, embodiments of this disclosure provide an angular stroke hydraulic actuator, comprising: a valve body, an axial movement unit, a circumferential cam rotation unit, and a rotation acquisition unit; wherein an oil passage chamber is provided within the valve body; the axial movement unit is located within the oil passage chamber to divide the oil passage chamber into an upper chamber and a lower chamber; the circumferential cam rotation unit and the rotation acquisition unit are located within the valve body, and the circumferential cam rotation unit is limited and movably connected to the axial movement unit, and the rotation acquisition unit is movably connected to the circumferential cam rotation unit; the axial movement unit is adapted to move axially along the valve body when hydraulic oil is injected into the upper or lower chamber, thereby driving the circumferential cam rotation unit to rotate, the circumferential cam rotation unit is adapted to push the rotation acquisition unit in reciprocating motion, and the rotation acquisition unit is configured to detect the rotation information of the circumferential cam rotation unit.
[0007] In one optional embodiment, the axial movement unit includes: a piston; the piston is located in an oil passage chamber to divide the oil passage chamber into an upper chamber and a lower chamber, and the piston is threadedly engaged with a valve body; the piston is adapted to move axially along the valve body when hydraulic oil is injected into the upper chamber or the lower chamber.
[0008] In one optional embodiment, the circumferential cam rotation unit includes a cam; the cam is located in the valve body, and the cam is splined with the piston so that the piston drives the cam to rotate when it moves axially, thereby the cam pushes the rotation acquisition unit to reciprocate.
[0009] In one optional embodiment, the circumferential cam rotation unit further includes: a connecting sleeve; the connecting sleeve is located in the valve body, the connecting sleeve is splined with the cam, and the connecting sleeve is adapted to connect to the load; the cam is adapted to drive the connecting sleeve to rotate, thereby driving the load to rotate.
[0010] In one optional embodiment, the rotation acquisition unit includes: a controller, a push rod, a spring, a first contact block, a second contact block, a first trigger element, and a second trigger element; the valve body has a first mounting groove and a second mounting groove, the push rod passes through the first mounting groove and the second mounting groove and abuts against a cam, the spring is located in the first mounting groove and is movably connected to the push rod, the first contact block, the second contact block, the first trigger element, and the second trigger element are located in the second mounting groove, the first contact block and the second contact block are connected to the push rod, and the first contact block and the second contact block are located between the first trigger element and the second trigger element; the cam is adapted to push the push rod and the spring to reciprocate, so that the first contact block touches the first trigger element or the second contact block touches the second trigger element; the controller is configured to detect the rotation information of the piston through the contact signal of the first contact block and the contact signal of the second contact block.
[0011] In one alternative embodiment, the angular stroke hydraulic actuator further includes a guide rod that passes through a piston and a cam to guide the piston in linear movement and rotation, and the cam in rotation.
[0012] In one optional embodiment, the piston and valve body, the piston and guide rod, the cam and valve body, and the cam and guide rod are respectively connected by corresponding sealing rings.
[0013] In one optional embodiment, a top cover and a bottom cover are respectively provided on both sides of the valve body.
[0014] In one optional embodiment, the valve body is provided with a first oil inlet and a second oil inlet, and the first oil inlet and the second oil inlet are respectively connected to the upper chamber and the lower chamber.
[0015] Secondly, embodiments of this disclosure also provide a hydraulic system comprising: an angular stroke hydraulic actuator as described above.
[0016] The beneficial effect of this utility model is that by setting a rotation acquisition unit in the valve body, and the rotation acquisition unit physically cooperating with the circumferential cam rotation unit to acquire corresponding rotation information, the axial movement unit converts linear movement into rotational motion through the circumferential cam rotation unit, so that the rotation acquisition unit can accurately reflect the rotation state of the circumferential cam rotation unit, thereby accurately detecting the movement of the load.
[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.
[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 A structural diagram of an angular stroke hydraulic actuator provided in an embodiment of this disclosure;
[0021] Figure 2 A structural diagram of a cam provided in an embodiment of this disclosure;
[0022] Figure 3 This is a schematic block diagram of an angular stroke hydraulic actuator provided in an embodiment of the present disclosure.
[0023] In the picture:
[0024] 1. Valve body; 11. Oil passage chamber; 111. Upper chamber; 112. Lower chamber; 12. First mounting groove; 13. Second mounting groove; 14. First oil passage port; 15. Second oil passage port;
[0025] 2. Axial movement unit; 21. Piston;
[0026] 3. Circumferential cam rotation unit; 31. Cam; 32. Connecting sleeve;
[0027] 4. Rotating acquisition unit; 41. Push rod; 42. Spring; 43. First contact block; 44. Second contact block; 45. First trigger element; 46. Second trigger element;
[0028] 5. Guide rod;
[0029] 6. Sealing ring;
[0030] 7. Top cover;
[0031] 8. Bottom cover. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0033] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0034] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.
[0035] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0037] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0038] like Figures 1 to 3 As shown, at least one embodiment provides an angular stroke hydraulic actuator, which includes: a valve body 1, an axial movement unit 2, a circumferential cam rotation unit 3, and a rotation acquisition unit 4; wherein the valve body 1 has an oil passage chamber 11; the axial movement unit 2 is located in the oil passage chamber 11 to divide the oil passage chamber 11 into an upper chamber 111 and a lower chamber 112; the circumferential cam rotation unit 3 and the rotation acquisition unit 4 are located in the valve body 1, and the circumferential cam rotation unit 3 is limited and movably connected to the axial movement unit 2, and the rotation acquisition unit 4 is movably connected to the circumferential cam rotation unit 3; the axial movement unit 2 is adapted to move along the axial direction of the valve body 1 when hydraulic oil is injected into the upper chamber 111 or the lower chamber 112, so as to drive the circumferential cam rotation unit 3 to rotate, the circumferential cam rotation unit 3 is adapted to push the rotation acquisition unit 4 reciprocatingly, and the rotation acquisition unit 4 is configured to detect the rotation information of the circumferential cam rotation unit 3.
[0039] In at least one embodiment, by setting a rotation acquisition unit 4 inside the valve body 1, and by physically cooperating with the circumferential cam rotation unit 3 to acquire corresponding rotation information, the axial movement unit 2 converts linear movement into rotational motion through the circumferential cam rotation unit 3, so that the rotation acquisition unit 4 can accurately reflect the rotational state of the circumferential cam rotation unit 3, thereby accurately detecting the movement of the load.
[0040] In at least one embodiment, please refer to Figure 1 The axial moving unit 2 includes a piston 21; the piston 21 is located in the oil passage chamber 11 to divide the oil passage chamber 11 into an upper chamber 111 and a lower chamber 112, and the piston 21 is threadedly engaged with the valve body 1; the piston 21 is adapted to move axially along the valve body 1 when hydraulic oil is injected into the upper chamber 111 or the lower chamber 112.
[0041] Specifically, please refer to Figure 1 The piston 21 moves within the valve body 1 along the F1 direction.
[0042] Specifically, hydraulic oil is injected into the upper chamber 111, and the piston 21 moves downward. The valve body 1 and the piston 21 are connected by a multi-start trapezoidal thread, so that the piston 21 also rotates clockwise when it moves downward in a straight line.
[0043] Specifically, hydraulic oil is injected into the lower chamber 112, and the piston 21 moves upward. The valve body 1 and the piston 21 are connected by a multi-start trapezoidal thread, so that the piston 21 also rotates clockwise when it moves upward in a straight line.
[0044] In at least one embodiment, please refer to Figure 1 , Figure 2 The circumferential cam rotation unit 3 includes a cam 31. The cam 31 is located inside the valve body 1, and the cam 31 is splined with the piston 21 so that the piston 21 drives the cam 31 to rotate when it moves axially, and the cam 31 pushes the rotating acquisition unit 4 to reciprocate.
[0045] Specifically, please refer to Figure 1 Cam 31 rotates in the F2 direction or the F2 direction.
[0046] In at least one embodiment, please refer to Figure 1 The circumferential cam rotation unit 3 further includes: a connecting sleeve 32; the connecting sleeve 32 is located inside the valve body 1, the connecting sleeve 32 is splined with the cam 31, and the connecting sleeve 32 is adapted to connect the load; the cam 31 is adapted to drive the connecting sleeve 32 to rotate, thereby driving the load to rotate.
[0047] Specifically, piston 21 and cam 31 are splined together, and cam 31 rotates clockwise. Connecting sleeve 32 is also splined together with cam 31 and rotates clockwise. Connecting sleeve 32 is keyed to the load, thereby driving the load to move.
[0048] Specifically, piston 21 and cam 31 are splined together, cam 31 rotates counterclockwise, connecting sleeve 32 is also splined together with cam 31 and rotates counterclockwise, connecting sleeve 32 is keyed to load, thereby driving load movement.
[0049] In at least one embodiment, please refer to Figure 1 , Figure 3The rotation acquisition unit 4 includes: a controller, a push rod 41, a spring 42, a first contact block 43, a second contact block 44, a first trigger element 45, and a second trigger element 46; the valve body 1 has a first mounting groove 12 and a second mounting groove 13, the push rod 41 passes through the first mounting groove 12 and the second mounting groove 13 and abuts against the cam 31, the spring 42 is located in the first mounting groove 12 and is movably connected to the push rod 41, and the first contact block 43, the second contact block 44, the first trigger element 45, and the second trigger element 46 are located in the second mounting groove 12. Within the mounting slot 13, the first contact block 43 and the second contact block 44 are connected to the push rod 41, and the first contact block 43 and the second contact block 44 are located between the first trigger element 45 and the second trigger element 46; the cam 31 is adapted to push the push rod 41 and the spring 42 to reciprocate, so that the first contact block 43 touches the first trigger element 45 or the second contact block 44 touches the second trigger element 46; the controller is configured to detect the rotation information of the piston 21 through the touch signal of the first contact block 43 and the touch signal of the second contact block 44.
[0050] Specifically, please refer to Figure 1 The push rod 41 reciprocates along the F4 direction.
[0051] Specifically, the push rod 41 rests on the cam 31. When the cam 31 rotates, it pushes the push rod 41 to reciprocate linearly, thereby causing the first contact block 43 to touch the first trigger element 45 or the second contact block 44 to touch the second trigger element 46, and outputting the corresponding contact signal.
[0052] Specifically, the controller uses a PLC, and the first trigger element 45 and the second trigger element 46 can be microswitches.
[0053] Specifically, the controller obtains the rotation speed and number of rotations of the cam 31 through the touch signals of the first touch block 43 and the second touch block 44, and when the load is a valve, it can detect the opening degree and opening and closing speed of the valve.
[0054] Specifically, the rotation information is the rotational speed and number of rotations of cam 31.
[0055] In at least one embodiment, please refer to Figure 1 The angular stroke hydraulic actuator further includes a guide rod 5; the guide rod 5 passes through the piston 21 and the cam 31 to guide the piston 21 to move linearly and rotate and the cam 31 to rotate.
[0056] In at least one embodiment, please refer to Figure 1 The piston 21 and the valve body 1, the piston 21 and the guide rod 5, the cam 31 and the valve body 1, and the cam 31 and the guide rod 5 are respectively connected by corresponding sealing rings 6.
[0057] In at least one embodiment, please refer to Figure 1 The valve body 1 is provided with a top cover 7 and a bottom cover 8 on both sides respectively.
[0058] In at least one embodiment, please refer to Figure 1 The valve body 1 is provided with a first oil inlet 14 and a second oil inlet 15, and the first oil inlet 14 and the second oil inlet 15 are respectively connected to the upper cavity 111 and the lower cavity 112.
[0059] Based on the same technical concept, at least one embodiment also provides a hydraulic system comprising: an angular stroke hydraulic actuator as described above.
[0060] In summary, this utility model, by setting a rotation acquisition unit in the valve body and physically cooperating with the circumferential cam rotation unit to acquire corresponding rotation information, and by using an axial movement unit to convert linear movement into rotational motion through the circumferential cam rotation unit, enables the rotation acquisition unit to accurately reflect the rotational state of the circumferential cam rotation unit, thereby accurately detecting the movement of the load.
[0061] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0062] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0063] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.
[0064] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.
[0065] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A rotary hydraulic actuator, characterized in that, include: The valve body (1), axial movement unit (2), circumferential cam rotation unit (3), and rotation acquisition unit (4) are also included. The valve body (1) has an oil passage chamber (11). The axial moving unit (2) is located in the oil passage cavity (11) to divide the oil passage cavity (11) into an upper cavity (111) and a lower cavity (112). The circumferential cam rotation unit (3) and the rotation acquisition unit (4) are located inside the valve body (1), and the circumferential cam rotation unit (3) is limited and movably connected to the axial movement unit (2), and the rotation acquisition unit (4) is movably connected to the circumferential cam rotation unit (3); The axial moving unit (2) is adapted to move along the axial direction of the valve body (1) when hydraulic oil is injected into the upper chamber (111) or the lower chamber (112) to drive the circumferential cam rotating unit (3) to rotate. The circumferential cam rotating unit (3) is adapted to push the rotation acquisition unit (4) to reciprocate, and the rotation acquisition unit (4) is configured to detect the rotation information of the circumferential cam rotating unit (3).
2. The rotary hydraulic actuator as described in claim 1, characterized in that, The axial moving unit (2) includes: piston (21); The piston (21) is located in the oil passage chamber (11) to divide the oil passage chamber (11) into an upper chamber (111) and a lower chamber (112), and the piston (21) is threadedly connected to the valve body (1). The piston (21) is adapted to move axially along the valve body (1) when hydraulic oil is injected into the upper chamber (111) or the lower chamber (112).
3. The rotary hydraulic actuator as described in claim 2, characterized in that, The circumferential cam rotation unit (3) includes: a cam (31); The cam (31) is located inside the valve body (1), and the cam (31) and the piston (21) are connected by a spline so that the piston (21) drives the cam (31) to rotate when it moves axially, and then the cam (31) pushes the rotating acquisition unit (4) to reciprocate.
4. The rotary hydraulic actuator as described in claim 3, characterized in that, The circumferential cam rotation unit (3) further includes: a connecting sleeve (32); The connecting sleeve (32) is located inside the valve body (1), and the connecting sleeve (32) is splined with the cam (31), and the connecting sleeve (32) is suitable for connecting the load; The cam (31) is adapted to drive the connecting sleeve (32) to rotate, thereby driving the load to rotate.
5. The rotary hydraulic actuator as described in claim 3, characterized in that, The rotation acquisition unit (4) includes: a controller, a push rod (41), a spring (42), a first contact block (43), a second contact block (44), a first trigger element (45), and a second trigger element (46); The valve body (1) is provided with a first mounting groove (12) and a second mounting groove (13). The push rod (41) passes through the first mounting groove (12) and the second mounting groove (13) and abuts against the cam (31). The spring (42) is located in the first mounting groove (12) and is movably connected to the push rod (41). The first contact block (43), the second contact block (44), the first trigger element (45), and the second trigger element (46) are located in the second mounting groove (13). The first contact block (43) and the second contact block (44) are connected to the push rod (41). The first contact block (43) and the second contact block (44) are located between the first trigger element (45) and the second trigger element (46). The cam (31) is adapted to push the push rod (41) and the spring (42) to reciprocate so that the first contact block (43) touches the first trigger element (45) or the second contact block (44) touches the second trigger element (46). The controller is configured to detect the rotation information of the piston (21) by the touch signal of the first touch block (43) and the touch signal of the second touch block (44).
6. The rotary hydraulic actuator as described in claim 3, characterized in that, Also includes: Guide rod (5); The guide rod (5) passes through the piston (21) and the cam (31) to guide the piston (21) to move linearly and rotate and the cam (31) to rotate.
7. The rotary hydraulic actuator as described in claim 6, characterized in that, The piston (21) and valve body (1), the piston (21) and guide rod (5), the cam (31) and valve body (1), and the cam (31) and guide rod (5) are respectively connected by corresponding sealing rings (6).
8. The rotary hydraulic actuator as described in claim 1, characterized in that, The valve body (1) is provided with a top cover (7) and a bottom cover (8) on both sides respectively.
9. The rotary hydraulic actuator as described in claim 1, characterized in that, The valve body (1) is provided with a first oil inlet (14) and a second oil inlet (15), and the first oil inlet (14) and the second oil inlet (15) are respectively connected to the upper cavity (111) and the lower cavity (112).
10. A hydraulic system, characterized in that, include: The angular stroke hydraulic actuator as described in any one of claims 1-9.