Manual driving device of electric hydraulic actuator

Abstract

The utility model relates to the technical field of adjusting type valve actuators, in particular to a manual driving device of an electric hydraulic actuator, which comprises a manual operator assembly, a driving nut, an upper cover plate, a driving stud, a spring pressing plate, a spring, a push rod, a piston assembly frame, a piston assembly, an oil cylinder and a shell. The manual operator assembly comprises a manual operation upper cover, a support and a second gear, the support and the second gear are installed in the manual operation upper cover, the second gear is rotationally installed on the support, and a first gear meshed with the second gear is further installed on the support. Through the arrangement of the manual operator assembly, the actuator can be driven to descend and reset through manual operation during actual use, automatic indication of the operation state can be achieved through the state indicator in the manual operation process, and operators can better observe and operate safely easily.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valve actuators, and particularly relates to a manual driving device for an electro-hydraulic actuator. Background Art

[0002] During maintenance or debugging of regulating valve actuators, manual operation is often required to adjust the valve opening to a certain position.

[0003] The existing Chinese patent with the publication number CN201269311Y discloses a hydraulic regulating valve with electro-hydraulic servo control, including a connecting bracket as an intermediate part. The right end of the connecting bracket is connected with a hydraulic actuator, the left end is connected with a pipeline, a position transmitter is connected above, and a high-performance butterfly valve is connected below. The pipeline is provided with a position quick-opening valve group and a control valve group which are connected to each other, and the control valve group is connected with the position transmitter.

[0004] Regarding the above related technologies, it is found that there are problems such as inconvenient operation and lack of relevant status indication in the existing manual operation solutions for electro-hydraulic actuators. Content of the Utility Model

[0005] The utility model solves the problems in the related technologies and provides a manual driving device for an electro-hydraulic actuator.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] A manual driving device for an electro-hydraulic actuator includes a hand operator assembly, a driving nut, an upper cover plate, a driving stud, a spring pressing plate, a spring, a push rod, a piston assembly frame, a piston assembly, an oil cylinder and a housing. The hand operator assembly includes an upper hand operator cover and a bracket and a second gear installed in the upper hand operator cover. The second gear is rotatably installed on the bracket, and a first gear meshing with the second gear is also installed on the bracket. A status indicator is also slidably installed on the bracket.

[0008] As a preferred solution, a plurality of connecting ears are evenly arranged on the outer side surface of the upper cover plate along the circumferential direction, and a first central hole is opened at the center of the upper cover plate. Two round holes are also provided on the upper cover plate.

[0009] As a preferred solution, a groove is horizontally opened on the bracket, a boss is arranged in the groove, the boss is integrally formed with the bracket. The upper end surface of the bracket is provided with a central boss and a positioning boss. A central groove is opened in the middle of the central boss. The lower end surface of the bracket is provided with a first boss and a second boss, and the first boss and the second boss are respectively arranged on both sides of the groove.

[0010] As a preferred solution, the first gear is sleeved on the positioning boss, and a gear circlip for limiting the first gear is fixedly installed on the positioning boss.

[0011] As a preferred solution, the status indicator includes a raised platform, a limiting bent plate and a main body. The raised platform is fixedly installed at the head of the upper end face of the main body. A status indication is provided at the end of the upper end face of the main body. The limiting bent plates are symmetrically arranged on both sides of the middle part of the main body.

[0012] As a preferred solution, a first sliding groove and a second sliding groove for slidably installing the raised platform are formed on the lower end face of the second gear. A sliding groove boss is integrally formed in the middle of the second gear, and a second central hole is formed in the middle of the sliding groove boss.

[0013] As a preferred solution, a hexagonal boss is provided at the center of the lower end face of the manual operation upper cover, and a toothed boss is further provided on the inner side surface of the manual operation upper cover. A plurality of small protrusions are evenly arranged on the inner side surface of the hexagonal boss, and auxiliary grooves are provided on both sides of the toothed boss.

[0014] As a preferred solution, an annular groove is formed inside the manual operation upper cover, and a plurality of anti-slip strips are provided on the outer side surface of the manual operation upper cover. An indication strip is further provided on the upper end face of the manual operation upper cover, and both the indication strip and the anti-slip strips are fixedly connected to the manual operation upper cover.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the setting of the manual operation unit assembly in this application, manual operation drive can be realized during actual use to lower and reset the actuator, and during the manual operation process, the status indicator can be used to automatically indicate the operation status, which is convenient for the operator to better observe and operate safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the exploded structural schematic diagram of the manual operation unit assembly of the present utility model;

[0018] Figure 3 is the three-dimensional view of the upper cover plate of the present utility model;

[0019] Figure 4 is the bottom three-dimensional view of the bracket of the present utility model;

[0020] Figure 5 is the top three-dimensional view of the bracket of the present utility model;

[0021] Figure 6 is the bottom three-dimensional view of the second gear of the present utility model;

[0022] Figure 7 It is a top view three-dimensional view of the second gear of the present utility model;

[0023] Figure 8 It is a three-dimensional view of the state indicator of the present utility model;

[0024] Figure 9 It is a bottom view three-dimensional view of the upper cover of the manual operation of the present utility model;

[0025] Figure 10 It is a top view three-dimensional view of the upper cover of the manual operation of the present utility model.

[0026] In the figure: 1. Manual operation device assembly; 2. Driving nut; 3. Upper cover plate; 31. Connecting ear; 32. First central hole; 33. Round hole; 4. Driving stud; 5. Spring pressing plate; 6. Spring; 7. Push rod; 8. Piston assembly frame; 9. Piston assembly; 10. Oil cylinder; 11. Outer shell; 12. First gear; 13. Bracket; 131. Boss; 132. Groove; 133. First boss; 134. Second boss; 135. Central boss; 136. Central groove; 137. Positioning boss; 14. Gear circlip; 15. Second gear; 151. First chute; 152. Second chute; 153. Chute boss; 154. Second central hole; 16. State indicator; 161. Raised platform; 162. Limiting bent plate; 163. Main body; 17. Upper cover of manual operation; 171. Hexagonal boss; 172. Small protrusion; 173. Tooth-shaped boss; 174. Auxiliary groove; 175. Indication bar; 176. Anti-slip strip; 177. Annular groove. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0028] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience in description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model; the orientation terms "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0031] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0032] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without otherwise stating, the above words have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0033] A manual driving device for an electro-hydraulic actuator, comprising a manual operator assembly 1, a driving nut 2, an upper cover plate 3, a driving stud 4, a spring pressing plate 5, a spring 6, a push rod 7, a piston assembly frame 8, a piston assembly 9, an oil cylinder 10 and a housing 11. The spring baffle plate 5 and the housing 11 together confine the spring 5 therebetween. The push rod 7 is threadedly connected to the driving stud 4; the push rod 7 is press-fitted on the piston assembly bracket 8, and the two are in interference fit. The bracket 8 is mounted on the piston assembly 9. The manual operator assembly 1 includes a manual upper cover 17 and a bracket 13 and a second gear 15 mounted in the manual upper cover 17. The second gear 15 is rotatably mounted on the bracket 13, and a first gear 12 meshing with the second gear 15 is also mounted on the bracket 13. A status indicator 16 is slidably mounted on the bracket 13.

[0034] A groove 132 is horizontally provided on the bracket 13, and a boss 131 is provided in the groove 132. The boss 131 is integrally formed with the bracket 13. A central boss 135 and a positioning boss 137 are provided on the upper end surface of the bracket 13. A central groove 136 is provided in the middle of the central boss 135. A first boss 133 and a second boss 134 are provided on the lower end surface of the bracket 13. The first boss 133 and the second boss 134 are respectively arranged on both sides of the groove 132. The first gear 12 is sleeved on the positioning boss 137, and a gear snap ring 14 for limiting the first gear 12 is fixedly mounted on the positioning boss 137. The first gear 12 is mounted on the boss 137 of the bracket 13, and the gear snap ring 14 is used to prevent the first gear 12 from falling off.

[0035] A plurality of connecting lugs 31 are uniformly arranged on the outer side surface of the upper cover plate 3 in the circumferential direction. The connecting lugs 31 on the upper cover plate 3 can be mounted on the housing 11 through bolts. And a first central hole 32 is provided at the center of the upper cover plate 3, and two circular holes 33 are also provided on the upper cover plate 3. The first boss 133 and the second boss 134 of the bracket 13 are inserted into the two circular holes 33 of the upper cover plate 3. The head of the driving stud 4 passes through the first central hole 32 of the upper cover plate and is press-fitted into the central hole of the driving nut 2. After press-fitting, there is a certain gap between the combination of the driving nut 2 and the driving stud 4 and the upper cover plate 3, which can ensure that the combination of the driving nut 2 and the driving stud 4 rotates in the first central hole 32 of the cover plate 3.

[0036] The status indicator 16 includes a raised platform 161, a limiting bent plate 162, and a main body 163. The raised platform 161 is fixedly installed at the head of the upper end surface of the main body 163. A status indication 164 is provided at the end of the upper end surface of the main body 163. The limiting bent plates 162 are symmetrically arranged on both sides of the middle part of the main body 163. The lower end surface of the second gear 15 is provided with a first chute 151 and a second chute 152 for the sliding installation of the raised platform 161. A chute boss 153 is integrally formed in the middle of the second gear 15, and a second central hole 154 is provided in the middle of the chute boss 153. The buckle of the status indicator 16 is sleeved on the boss 131 of the bracket 13. At this time, the main body 163 of the status indicator is exactly in the groove 132 of the bracket 13 and can slide back and forth. The raised platform 161 of the status indicator 16 is installed in the guide groove formed by the first chute 151 and the second chute 152. During installation, in the initial state, the raised platform 161 is at the position of the second chute 152. At this time, the indicator 16 is retracted inside the hand-operated upper cover and cannot be seen from the outside. When the raised platform 161 is at the position of the first chute 151, the indicator 16 extends out of the hand-operated upper cover, and the MAN status indication 164 at the top of the indicator can be seen from the outside. The second central hole 154 of the second gear 15 is sleeved around the central boss 135 of the bracket 13, and there is a certain gap between the two to ensure that the second gear 15 can rotate. The chute boss 153 of the second gear 15 is close to the hand-operated upper cover 17, and the central groove 136 of the bracket 13 is sleeved around the hexagonal boss 171 of the hand-operated upper cover 17.

[0037] A hexagonal boss 171 is provided at the center of the lower end surface of the hand-operated upper cover 17, and a toothed boss 173 is also provided on the inner side surface of the hand-operated upper cover 17. A number of small protrusions 172 are evenly arranged on the inner side surface of the hexagonal boss 171. Auxiliary grooves 174 are provided on both sides of the toothed boss 173. An annular groove 177 is provided inside the hand-operated upper cover 17, and a number of anti-slip strips 176 are provided on the outer side surface of the hand-operated upper cover 17. An indicator strip 175 is also provided on the upper end surface of the hand-operated upper cover 17. Both the indicator strip 175 and the anti-slip strips 176 are fixedly connected to the hand-operated upper cover 17. The drive nut 2 is inserted into the hexagonal inner hole of the hexagonal boss 171 of the hand-operated upper cover 17, and several small protrusions 172 are designed in the inner hole of the hexagonal boss 171, which can latch the hand-operated device assembly on the drive nut 2 to prevent it from falling off.

[0038] When the hand-held controller assembly rotates, the hexagonal boss 171 in the upper cover 17 of the hand-held controller drives the drive nut 2 and the drive stud 4 to rotate. The drive stud 4 meshes with the internal thread of the push rod 7, which can drive the up and down movement of the push rod 7. When the push rod 7 moves downward, this movement is transmitted to the piston assembly 9 through the piston assembly bracket 8, and the boss at the head of the piston assembly 9 pushes the oil cylinder 10 downward, and the spring 6 is compressed. When the push rod 7 moves upward, it pulls the piston assembly bracket 8 and the piston assembly 9 upward, and under the action of the spring 6, the oil cylinder 10 also moves upward accordingly.

[0039] In this embodiment, the width of the annular groove 177 inside the upper cover 17 of the hand-held controller is smaller than the pitch circle diameter of the first gear 12. Therefore, when the upper cover of the hand-held controller rotates, the relative movement of the first gear 12 in this annular groove can only slide but not rotate. It is not until the tooth-shaped boss 173 rotates to the position of the first gear 12 and meshes with the first gear 12, and the grooves 174 on both sides of the tooth-shaped boss 173 provide space for the rotation of the first gear 12. Therefore, after the tooth-shaped boss 173 rotates past, the first gear 12 rotates one tooth. During installation, the initial state is defaulted to the automatic state, the tooth-shaped boss 173 is in the meshing state with the first gear 12, and the boss 161 of the indicator is in the position of the second chute 152. When the actuator rotates from the initial state, the tooth-shaped boss 173 drives the first gear 12 to rotate one tooth, and then drives the second gear 15 to rotate one tooth. The switching of the second gear 15 from the second chute 152 to the first chute 151 just has a distance of one tooth interval. Therefore, the indicator boss 161 slides from the second chute 152 into the first chute 151 at this time, and the indicator 16 extends out, and the MAN status indicator 164 at the top of the indicator can be seen externally. After that, when the upper cover of the hand-held controller continues to rotate, this status indicator is always displayed externally; until the upper cover of the hand-held controller is rotated in the reverse direction to return to the initial position.

[0040] The above is the preferred embodiment of the present invention. Those skilled in the art of the present invention can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the above specific embodiments. Any obvious improvements, substitutions or variations made by those skilled in the art on the basis of the present invention all fall within the protection scope of the present invention.

Claims

1. A manual drive device for an electro-hydraulic actuator, comprising a hand operator assembly (1), a drive nut (2), an upper cover plate (3), a drive stud (4), a spring pressure plate (5), a spring (6), a push rod (7), a piston assembly frame (8), a piston assembly (9), a cylinder (10) and a housing (11), characterized in that: The hand operator assembly (1) comprises a hand operator upper cover (17), a bracket (13) and a second gear (15) mounted in the hand operator upper cover (17); the second gear (15) is rotatably mounted on the bracket (13); a first gear (12) meshing with the second gear (15) is also mounted on the bracket (13); and a status indicator (16) is also slidably mounted on the bracket (13).

2. The manual driving device of an electro-hydraulic actuator according to claim 1, characterized in that: A plurality of connection ears (31) are evenly arranged on the outer surface of the upper cover plate (3) in a circumferential direction, and a first center hole (32) is opened at the center of the upper cover plate (3). Two circular holes (33) are also arranged on the upper cover plate (3).

3. The manual driving device of an electro-hydraulic actuator according to claim 2, characterized in that: The bracket (13) is provided with a groove (132) horizontally, a boss (131) is provided in the groove (132), the boss (131) and the bracket (13) are integrally formed, the upper end surface of the bracket (13) is provided with a center boss (135) and a positioning boss (137), the middle part of the center boss (135) is provided with a center groove (136), and the lower end surface of the bracket (13) is provided with a first boss (133) and a second boss (134), the first boss (133) and the second boss (134) are respectively provided on both sides of the groove (132).

4. The manual driving device of an electro-hydraulic actuator according to claim 3, characterized in that: The first gear (12) is sleeved on the positioning boss (137), and a gear retaining spring (14) for limiting the position of the first gear (12) is also fixedly mounted on the positioning boss (137).

5. The manual driving device of an electro-hydraulic actuator according to claim 4, characterized in that: The status indicator (16) comprises a raised platform (161), a limit bending plate (162) and a main body (163); the raised platform (161) is fixedly mounted on the head of the upper end surface of the main body (163); a status indicator (164) is arranged at the end of the upper end surface of the main body (163); and the limit bending plate (162) is symmetrically arranged on both sides of the middle of the main body (163).

6. The manual driving device of an electro-hydraulic actuator according to claim 5, characterized in that: The lower end surface of the second gear (15) is provided with a first slide groove (151) and a second slide groove (152) for slidingly mounting the boss (161), and the middle portion of the second gear (15) is also integrally provided with a slide groove boss (153), and the middle portion of the slide groove boss (153) is provided with a second center hole (154).

7. The manual driving device of an electro-hydraulic actuator according to claim 6, characterized in that: A hexagonal boss (171) is provided at the center of the lower end surface of the hand-operated upper cover (17), and a tooth-shaped boss (173) is also provided on the inner side surface of the hand-operated upper cover (17), a plurality of small protrusions (172) are evenly provided on the inner side surface of the hexagonal boss (171), and auxiliary grooves (174) are provided on both sides of the tooth-shaped boss (173).

8. The manual driving device of an electro-hydraulic actuator according to claim 7, characterized in that: An annular groove (177) is provided inside the hand-operated upper cover (17), and a plurality of anti-slip strips (176) are provided on the outer surface of the hand-operated upper cover (17). An indicator strip (175) is also provided on the upper end surface of the hand-operated upper cover (17), and both the indicator strip (175) and the anti-slip strip (176) are fixedly connected to the hand-operated upper cover (17).

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