CN219933135U - Coaxial locking device for valve rod - Google Patents
Coaxial locking device for valve rod Download PDFInfo
- Publication number
- CN219933135U CN219933135U CN202321288238.XU CN202321288238U CN219933135U CN 219933135 U CN219933135 U CN 219933135U CN 202321288238 U CN202321288238 U CN 202321288238U CN 219933135 U CN219933135 U CN 219933135U
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- Prior art keywords
- clamping ring
- locking device
- gear
- output shaft
- ring
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- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a valve rod coaxial locking device which comprises a clamping ring, wherein an actuator output shaft is arranged at the bottom of the clamping ring, a clamping piece is sleeved outside the actuator output shaft protruding out of the upper part of the clamping ring, a clamping ring is arranged at the upper part of the clamping ring, threads I are arranged on the inner side of the right end of the clamping ring, a locking plate is arranged in the left end of the clamping ring, threads II opposite to the threads in direction are arranged on the right end of the locking plate, and the clamping ring, the locking plate and a base are all movably connected through screws. The utility model can realize the locking action of the valve rod of the multi-angle execution air valve actuator through the matched use of the transmission head, the gear set and the screw rod; and the screw is in a middle of the screw as a boundary, threads at two ends are reversely designed, so that when the screw rotates, the moving directions of the locking plate and the locking ring are opposite and the moving distances are equal, the central positions of the locking plate and the locking ring are kept consistent with the central position of an output shaft of the actuator, the precision can be effectively controlled, and the abrasion between the valve rod and the valve body is reduced.
Description
Technical Field
The utility model relates to the technical field of valve rods of air valves, in particular to a coaxial locking device of a valve rod.
Background
Currently, the mode of locking the valve rod by the air valve actuator is as follows:
1. the valve rod is sleeved by the sleeve, and the valve rod is locked by using single or multiple jackscrews and screws on the side wall of the sleeve.
2. One end of the valve rod is provided with a double-sided tooth surface structure at a fixed position, and the valve rod is selected for use according to the rough thickness of the valve rod; the other end uses U type screw rod, twists the nut at U type screw rod both ends during the use for the U type reduces and the double-sided tooth face structure between the clearance locking valve rod.
However, both of the above two approaches exist: the locking operation of the valve rod can only be operated from the range of 90 degrees on the horizontal plane perpendicular to the valve rod, and the center of the valve rod and the rotation center of the actuator are offset, so that torsion generated by the actuator is not concentric with the valve rod, and the control precision is affected and the abrasion of the valve rod and the valve body is accelerated.
There is currently no effective solution to the above problems.
Disclosure of Invention
The utility model provides a valve rod coaxial locking device aiming at the technical problems in the related art, which can overcome the defects in the prior art.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the device comprises a clamping ring, wherein an actuator output shaft is arranged at the bottom of the clamping ring, a clamping piece is sleeved outside the actuator output shaft protruding out of the upper part of the clamping ring, the upper part of the clamping ring is provided with a clamping ring, the inner side of the right end of the clamping ring is provided with a first thread, the inner side of the left end of the clamping ring is provided with a locking plate, the right end of the locking plate is provided with a second thread opposite to the first thread, and the clamping ring, the locking plate and a base are all movably connected through screws;
grooves which are symmetrical by taking the screw rod as a center are formed in the left end of the clamping ring and the left end of the base, and the left end of the clamping ring is sequentially clamped into the grooves corresponding to the base and the clamping ring; the screw is provided with threads with opposite directions on two sides taking the middle as the center, the right side thread of the screw is movably connected with the locking ring, and the left side thread of the screw is movably connected with the right end of the base, the left end of the locking ring and the left end of the locking ring respectively; the left end of the screw is provided with a first gear, and the first gear is connected with the transmission head through a gear set.
Further, a through round hole is formed in the clamping ring, and the actuator output shaft is arranged in the round hole.
Further, threads matched with the external threads of the output shaft of the actuator are arranged in the clamping ring.
Further, threads matched with the external threads of the output shaft of the actuator are arranged inside the card.
Further, the top end of the card is flush with the top end of the actuator output shaft.
Further, a compression spring and a compression sheet are sleeved on the transmission head, and a gear II is arranged at one end, close to the gear group, of the transmission head.
Further, the first gear, the second gear and the intermediate gear on the gear set are bevel gears with 45 degrees.
Further, the compression spring is fixedly connected with the compression sheet.
Further, both ends of the gear set and the end part of the screw rod provided with the first gear are clamped into the base.
Further, an upper shell is arranged at the upper part of the base.
The utility model has the beneficial effects that: the utility model can realize the locking action of the valve rod of the multi-angle execution air valve actuator through the matched use of the transmission head, the gear set and the screw rod; and the screw is in a middle of the screw as a boundary, threads at two ends are reversely designed, so that when the screw rotates, the moving directions of the locking plate and the locking ring are opposite and the moving distances are equal, the central positions of the locking plate and the locking ring are kept consistent with the central position of an output shaft of the actuator, the precision can be effectively controlled, and the abrasion between the valve rod and the valve body is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a valve stem coaxial locking device according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram showing an assembled structure of a coaxial locking device for a valve rod according to an embodiment of the present utility model;
FIG. 3 is a top view of an assembled schematic diagram of a coaxial locking device for a valve stem according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram showing an assembled structure of a coaxial locking device for a valve rod according to an embodiment of the present utility model;
FIG. 5 is a schematic diagram III of an assembled structure of a coaxial locking device for a valve stem according to an embodiment of the present utility model;
FIG. 6 is a schematic illustration of the use of a valve stem coaxial locking device in conjunction with an actuator according to an embodiment of the present utility model;
in the figure: 1. a clasp; 2. an actuator output shaft; 3. a card; 4. a locking ring; 5. a first thread; 6. a locking plate; 7. a second thread; 8. a base; 9. a screw; 10. a first gear; 11. a gear set; 12. a transmission head; 13. a compression spring; 14. a compacting sheet; 15. a second gear; 16. an upper case; 17. a valve rod.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.
As shown in fig. 1-6, the coaxial locking device for the valve rod according to the embodiment of the utility model comprises a clamping ring 1, wherein an actuator output shaft 2 is arranged at the bottom of the clamping ring 1, a clamping piece 3 is sleeved outside the actuator output shaft 2 protruding out of the upper part of the clamping ring 1, a clamping ring 4 is arranged at the upper part of the clamping ring 1, a first thread 5 is arranged at the inner side of the right end of the clamping ring 4, a locking plate 6 is arranged at the inner side of the left end of the clamping ring 4, a second thread 7 opposite to the first thread 5 is arranged at the right end of the locking plate 6, and the clamping ring 1, the clamping ring 4, the locking plate 6 and a base 8 are all movably connected through a screw 9;
grooves which are symmetrical by taking the screw rod 9 as a center are formed in the left end of the clamping ring 1 and the left end of the base 8, and the left end of the clamping ring 4 is sequentially clamped into the corresponding grooves of the base 8 and the clamping ring 1; the screw rod 9 is provided with threads with opposite directions on two sides taking the middle as the center, the right side thread of the screw rod 9 is movably connected with the locking ring 4, and the left side thread of the screw rod 9 is respectively movably connected with the right end of the base 8, the left end of the locking ring 4 and the left end of the clamping ring 1; the left end of the screw 9 is provided with a first gear 10, and the first gear 10 is connected with a transmission head 12 through a gear set 11.
Preferably, a through round hole is formed in the clamping ring 1, and the actuator output shaft 2 is arranged in the round hole.
Preferably, the inside of the snap ring 1 is provided with threads matching the external threads of the actuator output shaft 2. The card 3 is internally provided with threads which are matched with the external threads of the actuator output shaft 2. The top end of the card 3 is flush with the top end of the actuator output shaft 2.
Preferably, the transmission head 12 is sleeved with a compression spring 13 and a compression piece 14, and one end of the transmission head 12, which is close to the gear set 11, is provided with a gear II 15. The first gear 10, the second gear 15 and the intermediate gear on the gear set 11 are bevel gears with 45 degrees. The compression spring 13 is fixedly connected with the compression sheet 14. The transmission head 12, two ends of the gear set 11 and the left end of the screw 9 are connected with the clamping groove of the base 8 through buckles.
Preferably, both ends of the gear set 11 and the end of the screw provided with the first gear 10 are clamped into the base 8.
Preferably, an upper shell 16 is arranged at the upper part of the base 8, the upper shell 16 is fixedly connected with the base 8 through a screw, an opening is arranged at the left end of the upper shell 16, and the right end of the transmission head protrudes out of the opening of the upper shell 16.
In order to facilitate understanding of the above technical solutions of the present utility model, the following describes the above technical solutions of the present utility model in detail by a specific usage manner.
When the device is particularly used, according to the valve rod coaxial locking device, the clamping ring 1 of the air valve rod locking device is sleeved into the actuator output shaft 2, and the clamping groove of the actuator output shaft 2 is clamped by the clamping piece 3, so that the device and the actuator output shaft 2 are fixed. The valve rod is sleeved into the output shaft 2 of the actuator, the angle of the transmission head 12 is adjusted according to actual needs, and the compression spring 13 enables the compression piece 14 and the upper shell 16 to generate certain pressure, so that the transmission head 12 can be maintained at the position after the angle is adjusted. The transmission head 12 is screwed clockwise, and the screw 9 is driven to rotate through the transmission gear set 11, so that the lock ring 4 and the locking plate 6 synchronously move towards the center until the valve rod is pressed and fixed, and the lock ring 4 and the locking plate 6 synchronously move, so that when the diameter of the valve rod changes, the center of the valve rod is ensured to be consistent with the center of the output shaft 2 of the actuator after the valve rod is locked. By twisting the driving head 12 in the anticlockwise direction, the locking ring 4 and the locking plate 6 can be synchronously separated, and the valve rod is loosened to carry out maintenance work on equipment. The locking plate 6 is opposite to the screw thread of the threaded hole on the locking ring 4, the screw 9 takes the middle as a boundary, the screw threads at the two ends are opposite, and the locking plate 6 and the locking ring 4 are guaranteed to move in opposite directions when the screw 9 rotates, namely to be close to or far away from each other simultaneously. The contact surfaces of the locking plate 6 and the locking ring 4 with the valve rod are tooth surfaces, and the valve rod can be locked in the horizontal direction. In the transmission gear set 11, the gear types at symmetrical positions are consistent.
The locking plate 6 is opposite to the screw thread of the threaded hole on the locking ring 4, the screw 9 takes the middle as a boundary, the screw threads at the two ends are opposite, and the locking plate 6 and the locking ring 4 are guaranteed to move in opposite directions when the screw 9 rotates, namely to be close to or far away from each other simultaneously. The contact surfaces of the locking plate 6 and the locking ring 4 with the valve rod are tooth surfaces, and the valve rod can be locked in the horizontal direction. In the transmission gear set 11, the gear types at symmetrical positions are consistent.
The transmission head 12 and the intermediate gear are bevel gears with 45 degrees, so that the transmission head 12 can rotate along the intermediate gear on the premise of keeping the engagement of the gears. The shape of the locking plate 6 and the locking ring 4 which are uniformly engaged with the valve rod is designed according to the diameter range of the valve rod. The screw rod 9 for moving the locking plate 6 takes the middle as a boundary, and threads at two ends are reversely designed, so that when the screw rod 9 rotates, the moving direction of the locking plate 6 and the moving distance of the locking ring 4 are opposite, and the central positions of the locking plate 6 and the locking ring 4 are kept consistent with the central position of the output shaft 2 of the actuator.
In summary, by means of the technical scheme, the locking valve rod action of the multi-angle execution air valve actuator can be realized through the cooperation of the transmission head, the gear set and the screw rod; and the screw is in a middle of the screw as a boundary, threads at two ends are reversely designed, so that when the screw rotates, the moving directions of the locking plate and the locking ring are opposite and the moving distances are equal, the central positions of the locking plate and the locking ring are kept consistent with the central position of an output shaft of the actuator, the precision can be effectively controlled, and the abrasion between the valve rod and the valve body is reduced.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The utility model provides a coaxial locking device of valve rod, its characterized in that includes snap ring (1), snap ring (1) bottom is equipped with executor output shaft (2), and the protrusion snap ring (1) upper portion executor output shaft (2) outside cover is equipped with card (3), the upper portion of snap ring (1) is equipped with catch (4), the right-hand member inboard of catch (4) is equipped with screw thread one (5), the inside locking plate (6) that is equipped with in catch (4) left end, the right-hand member of locking plate (6) is equipped with screw thread two (7) opposite with screw thread one (5), snap ring (1) catch (4) locking plate (6) and base (8) all pass through screw rod (9) swing joint;
the left end of the clamping ring (1) and the left end of the base (8) are respectively provided with a groove which is symmetrical by taking the screw rod (9) as a center, and the left end of the clamping ring (4) is sequentially clamped into the corresponding grooves of the base (8) and the clamping ring (1); threads with opposite directions are arranged on two sides of the screw rod (9) with the middle part as the center, the right side threads of the screw rod (9) are movably connected with the locking ring (4), and the left side threads of the screw rod (9) are respectively and movably connected with the right end of the base (8), the left end of the locking ring (4) and the left end of the clamping ring (1); the left end part of the screw rod (9) is provided with a first gear (10), and the first gear (10) is connected with a transmission head (12) through a gear set (11).
2. The coaxial locking device of the valve rod according to claim 1, wherein a through round hole is formed in the clamping ring (1), and the actuator output shaft (2) is arranged in the round hole.
3. A valve stem coaxial locking device according to claim 2, characterized in that the inside of the snap ring (1) is provided with threads matching the external threads of the actuator output shaft (2).
4. A valve stem coaxial locking device according to claim 1, characterized in that the card (3) is internally provided with threads matching the external threads of the actuator output shaft (2).
5. A valve stem coaxial locking device according to claim 4, characterized in that the top end of the card (3) is flush with the top end of the actuator output shaft (2).
6. The coaxial locking device of the valve rod according to any one of claims 1 to 5, wherein the transmission head (12) is sleeved with a compression spring (13) and a compression piece (14), and one end of the transmission head (12) close to the gear set (11) is provided with a gear II (15).
7. The valve stem coaxial locking device according to claim 6, wherein the first gear (10), the second gear (15) and the intermediate gear on the gear set (11) are all bevel gears of 45 °.
8. A valve stem coaxial locking device according to claim 7, characterized in that the compression spring (13) is fixedly connected with the compression plate (14).
9. The coaxial locking device for valve rod according to claim 8, wherein both ends of the gear set (11) and the end of the screw rod provided with the first gear (10) are clamped into the base (8).
10. A valve stem coaxial locking device according to claim 9, characterized in that the upper part of the base (8) is provided with an upper shell (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321288238.XU CN219933135U (en) | 2023-05-25 | 2023-05-25 | Coaxial locking device for valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321288238.XU CN219933135U (en) | 2023-05-25 | 2023-05-25 | Coaxial locking device for valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219933135U true CN219933135U (en) | 2023-10-31 |
Family
ID=88496454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321288238.XU Active CN219933135U (en) | 2023-05-25 | 2023-05-25 | Coaxial locking device for valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219933135U (en) |
-
2023
- 2023-05-25 CN CN202321288238.XU patent/CN219933135U/en active Active
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