CN217951398U - Coupler without need of centering - Google Patents
Coupler without need of centering Download PDFInfo
- Publication number
- CN217951398U CN217951398U CN202222068356.1U CN202222068356U CN217951398U CN 217951398 U CN217951398 U CN 217951398U CN 202222068356 U CN202222068356 U CN 202222068356U CN 217951398 U CN217951398 U CN 217951398U
- Authority
- CN
- China
- Prior art keywords
- connecting block
- lead screw
- output shaft
- valve
- centering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Valve Housings (AREA)
Abstract
The utility model discloses a need not centering shaft coupling, upper portion correspond with cylinder output shaft lead screw and are connected, and the lower part corresponds with the valve lead screw and is connected, including connecting block, connecting bolt and supporting gasket and connection swivel nut, the connecting block is the second connecting block of square structure setting including the first connecting block on upper portion and lower part, first connecting block middle part is provided with silk hole and the cylinder output shaft lead screw threaded connection that run through from top to bottom, the regulation hole of the convex cross-section that runs through from top to bottom has been put to second connecting block middle part, the connection swivel nut that is the convex cross-section has been put to the regulation hole internal inversion, it is provided with the silk hole and the valve lead screw threaded connection that vertically run through to connect the swivel nut. The utility model discloses do not need cylinder output shaft lead screw and valve lead screw to be difficult for causing the damage to the lead screw thread of cylinder output shaft and valve, have characteristics such as with low costs, the installation is convenient, simple process, reliability height, suitability are strong.
Description
Technical Field
The utility model relates to a need not centering shaft coupling.
Background
At present, a straight-stroke pneumatic actuating mechanism of a thermal power plant generally adopts a half clamping block to connect an air cylinder output shaft with a valve rod, and during installation, internal threads of the half clamping block are required to be simultaneously and completely meshed with external threads of the air cylinder output shaft and the valve rod, and the air cylinder output shaft and the valve rod are required to be strictly concentric. However, due to the limitation of field installation conditions after valve maintenance, the concentricity of the cylinder output shaft and the valve rod of the valve cannot be guaranteed, and the non-concentricity easily causes the collision and abrasion of the piston and the inner wall of the cylinder, the cylinder output shaft and the output shaft hole, the valve rod and the valve cover and other parts, so that the abrasion and air leakage of the cylinder sealing ring and the O-shaped ring and the abrasion and deformation of the valve rod are caused. Therefore, the problems that the adjustment action is blocked or shaken, the air leakage of the air cylinder cannot be normally operated and the like frequently occur in the operation period of the unit by the partial straight-stroke pneumatic actuating mechanism, the adjustment of controlled parameters is not facilitated, and the safe and stable operation of the unit is further influenced. The problem that the output shaft of the cylinder is not concentric with the valve rod of the valve is not fundamentally solved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a need not the centering shaft coupling, does not need cylinder output shaft lead screw and valve lead screw to be concentric completely to the difficult lead screw thread to cylinder output shaft and valve causes the damage, has characteristics such as with low costs, the installation is convenient, simple process, reliability height, suitability are strong.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a need not centering shaft coupling, upper portion correspond with cylinder output shaft lead screw and are connected, and the lower part corresponds with the valve lead screw and is connected, including connecting block, connecting bolt and supporting gasket and connection swivel nut, the connecting block is the second connecting block of square structure setting including the first connecting block on upper portion and lower part, first connecting block middle part is provided with the silk hole and the cylinder output shaft lead screw threaded connection that run through from top to bottom, and the corner is provided with a plurality of fixing bolt holes, the regulation hole of the convex cross-section that runs through about having inverted in second connecting block middle part, and the corner is provided with a plurality of fixing bolt holes, the fixing bolt hole of first connecting block and second connecting block corresponds from top to bottom and passes through connecting bolt and supporting gasket zonulae occludens, the connection swivel nut that is convex cross-section is inverted in the regulation hole, it is provided with vertical silk hole and the valve lead screw threaded connection that run through to connect the swivel nut.
In a preferred embodiment of the present invention, the connector further comprises a first connecting block locking nut and a second connecting block locking nut.
In a preferred embodiment of the present invention, the first connecting block lock nut is threadedly connected to the cylinder output shaft screw and locked to the first connecting block, and the second connecting block lock nut is threadedly connected to the valve screw and locked to the connecting nut.
In a preferred embodiment of the present invention, a positioning hole is disposed in a middle portion of a side surface of the first connecting block.
In a preferred embodiment of the present invention, the positioning hole is internally threaded with an anti-rotation rod.
In a preferred embodiment of the present invention, the cross-sectional size of the connection screw sleeve is smaller than the cross-sectional size of the adjustment hole.
The utility model has the advantages that: the utility model discloses a need not centering shaft coupling, do not need cylinder output shaft lead screw and valve lead screw to concentric completely to the difficult lead screw thread to cylinder output shaft and valve causes the damage, has characteristics such as with low costs, the installation is convenient, simple process, reliability height, suitability are strong.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is an exploded view of a preferred embodiment of the present invention without a centering coupling;
fig. 2 is a schematic view of the installation of the second connecting block and the connecting thread insert of a preferred embodiment of the centering coupling of the present invention;
fig. 3 is an installation schematic diagram of a preferred embodiment of the present invention without a centering coupling.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 in conjunction with fig. 2-3, an embodiment of the present invention includes:
the utility model provides a need not centering shaft coupling, upper portion and cylinder output shaft lead screw 1 correspond to be connected, and the lower part corresponds with valve lead screw 2 and is connected, includes connecting block, connecting bolt and supporting gasket 3 and connects swivel nut 4.
Wherein, the connecting block is square structure setting and includes the first connecting block 5 on upper portion and the second connecting block 6 of lower part, the screw hole and the 1 threaded connection of cylinder output shaft lead screw that run through from top to bottom are provided with in the middle part of first connecting block 5, and the corner is provided with a plurality of fixing bolt holes 7, and threaded connection has first connecting block lock nut 8 and locks with first connecting block 5 on the cylinder output shaft lead screw 1 for the displacement of transmission cylinder output shaft lead screw 1 on cylinder output shaft lead screw 1 is adorned soon.
The adjusting hole 9 of the convex cross section that runs through from top to bottom is inverted to the middle part of the second connecting block 6, a plurality of fixing bolt holes 7 are arranged at the corners, the fixing bolt holes 7 of the first connecting block 5 and the second connecting block 6 correspond from top to bottom and are closely connected with the matched gasket 3 through connecting bolts, and the connection stability of the first connecting block 5 and the second connecting block 6 is guaranteed.
The adjusting hole 9 is internally inverted with a convex section connecting threaded sleeve 4, and the section size of the connecting threaded sleeve 4 is smaller than that of the adjusting hole 9, so that the connecting threaded sleeve 4 can be radially adjusted in the adjusting hole 9 to a certain degree.
The connecting screw sleeve 4 is provided with a screw hole which penetrates through the valve screw rod 2 in the longitudinal direction and is in threaded connection with the valve screw rod 2, a second connecting block locking nut 10 is in threaded connection with the valve screw rod 2 and is locked with the connecting screw sleeve 4 to be installed on the valve screw rod 2 in a rotating mode, and displacement of the air cylinder output shaft screw rod 1 can be converted into displacement of the valve screw rod 2 after the connecting screw sleeve is assembled and connected with a connecting block 5 and a second connecting block 6.
The middle of the side face of the first connecting block 5 is provided with a positioning hole 11 and is in threaded connection with a rotation-preventing rod 12, one end of the rotation-preventing rod is rotatably installed on the first connecting block 5, and the other end of the rotation-preventing rod penetrates through a vertical groove in the valve support to prevent the coupler from deflecting.
In addition, the first connecting block 5 and the second connecting block 6 can be processed with screw holes for connecting a locator feedback rod, an on-site valve position indicating rod and the like according to the use requirement.
The using method comprises the following steps:
1. enough space is ensured between the connecting rod of the output shaft of the cylinder and the connecting rod of the valve, so that parts without centering couplings can be smoothly installed;
2. a first locking nut and a second locking nut are respectively and rotatably arranged on the cylinder output shaft connecting rod and the valve connecting rod in advance;
3. after the second connecting block is placed on the valve connecting rod, the connecting threaded sleeve is screwed;
4. a first connecting block is screwed on the connecting rod of the output shaft of the air cylinder, the first connecting block is completely screwed in, the tail end of a screw rod of the connecting rod of the output shaft of the air cylinder is flush with the lower end surface of the first connecting block, and the rotating angle of the first connecting block is adjusted to adapt to the connection and installation of a feedback rod, an anti-rotating rod and the like of a positioner;
5. adjusting the positions of the connecting threaded sleeve, the air cylinder and the valve to ensure that the stroke of the valve is still within the stroke range of the pneumatic actuating mechanism after the connecting threaded sleeve and the first connecting block are tightly attached;
6. the anti-rotation rod penetrates through a vertical groove on the valve bracket and is screwed on the first connecting block;
7. lifting the second connecting block upwards to be close to the first connecting block, aligning the fixing bolt holes at the four corners of the second connecting block with the first connecting block, screwing in the connecting bolts, and tightly connecting the upper connecting block and the second connecting block;
8. screwing a first locking nut and a second locking nut which are screwed on the cylinder output shaft connecting rod and the valve connecting rod in advance respectively;
9. and connecting and installing a locator feedback rod, a local valve position indicating rod and the like to the coupler, and setting the locator.
The device is characterized in that:
1. a certain radial assembly allowance is reserved between the adjusting hole and the connecting threaded sleeve, and a screw rod of an output shaft of the air cylinder is not required to be completely concentric with a screw rod of the valve;
2. the requirement on the processing technology is not high, and the processing cost is low;
3. the screw installation mode is adopted for most parts, the installation is convenient, and the screw threads of the screw rod are not easy to damage;
4. the distance between the screw rod of the output shaft of the air cylinder and the valve screw rod can be adjusted by changing the length of the connecting screw sleeve and the screwing length so as to adapt to the straight-stroke pneumatic actuating mechanisms and valves with different stroke lengths;
5. the anti-rotation rod is designed to prevent the shaft coupling from deflecting in the process of adjusting the door to open or close;
6. the threaded holes can be machined in the connecting blocks according to use requirements and used for connecting a locator feedback rod, an on-site valve position indicating rod and the like.
To sum up, the utility model discloses a need not centering shaft coupling, do not need cylinder output shaft lead screw and valve lead screw to concentric completely to the difficult lead screw thread to cylinder output shaft and valve causes the damage, has characteristics such as with low costs, the installation is convenient, simple process, reliability height, suitability are strong.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (6)
1. The utility model provides a need not centering shaft coupling, upper portion correspond with cylinder output shaft lead screw and are connected, and the lower part corresponds with the valve lead screw and is connected, its characterized in that, including connecting block, connecting bolt and supporting gasket and connection swivel nut, the connecting block is the second connecting block of square structure setting including the first connecting block on upper portion and lower part, first connecting block middle part is provided with the silk hole and the cylinder output shaft lead screw threaded connection that run through from top to bottom, and the corner is provided with a plurality of fixing bolt holes, the regulation hole of the convex cross-section that runs through from top to bottom has been put in the second connecting block middle part, and the corner is provided with a plurality of fixing bolt holes, the fixing bolt hole of first connecting block and second connecting block corresponds from top to bottom and passes through connecting bolt and supporting gasket zonulae occludens, the connection swivel nut that is convex cross-section has been put in the regulation hole, it is provided with vertical silk hole and the valve lead screw threaded connection that runs through to connect the swivel nut.
2. The non-centering coupling of claim 1, further comprising a first connecting block lock nut and a second connecting block lock nut.
3. The centering-free coupling as claimed in claim 2, wherein the first connecting block locking nut is in threaded connection with the cylinder output shaft screw and locked with the first connecting block, and the second connecting block locking nut is in threaded connection with the valve screw and locked with the connecting thread sleeve.
4. The centering-free coupling of claim 1, wherein the first connecting block is provided with a positioning hole in the middle of the side surface.
5. The centering-free coupling of claim 4, wherein the locating hole is internally threaded with an anti-rotation rod.
6. The centering-free coupling of claim 1, wherein the connecting threaded sleeve has a cross-sectional dimension that is smaller than the cross-sectional dimension of the adjustment bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222068356.1U CN217951398U (en) | 2022-08-08 | 2022-08-08 | Coupler without need of centering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222068356.1U CN217951398U (en) | 2022-08-08 | 2022-08-08 | Coupler without need of centering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217951398U true CN217951398U (en) | 2022-12-02 |
Family
ID=84225690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222068356.1U Active CN217951398U (en) | 2022-08-08 | 2022-08-08 | Coupler without need of centering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217951398U (en) |
-
2022
- 2022-08-08 CN CN202222068356.1U patent/CN217951398U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200370394A1 (en) | Fully-electrically driven downhole safety valve | |
| US7343846B2 (en) | Actuator having external load supporting member | |
| CN103038494B (en) | Pressure connection | |
| CN217951398U (en) | Coupler without need of centering | |
| CN212297711U (en) | Floating ball valve convenient to maintain | |
| CN115306340B (en) | Single-cylinder four-well wellhead oil production device | |
| CN109237062B (en) | Hydraulic gate valve easy to debug | |
| CN215672665U (en) | Hydraulic end of reciprocating pump | |
| CN216551869U (en) | Ship lock reverse arc valve top stagnant water mounting structure | |
| CN113074107A (en) | Hydraulic end of reciprocating pump | |
| CN109695754B (en) | Hydraulic oil inlet valve | |
| CN221373532U (en) | Hydraulic locking device of rotary blowout preventer | |
| CN216666071U (en) | Novel screw thread cartridge formula cone valve overflow valve | |
| CN111058785A (en) | Adjustable connecting device suitable for manifold connection | |
| CN221002690U (en) | Multi-structure casing head device | |
| CN217005501U (en) | Plug pressurized sealing device for plug type structure air cooler | |
| CN215673575U (en) | Prevent sealed regulation pole structure that leaks | |
| CN221217025U (en) | Auxiliary device for lifting high-pressure inner lower cylinder of steam turbine | |
| CN221683762U (en) | Electromagnetic valve optimizing structure | |
| CN215907768U (en) | Casing grouting circulating tool | |
| CN215445520U (en) | Angle joint type quick hydraulic pipe joint | |
| CN220748216U (en) | Oil recovery wellhead casing head with multiple supporting points | |
| CN214944144U (en) | Small casing head | |
| CN219197279U (en) | Sleeve head sleeve joint hoop hanger with centralizer | |
| CN220396640U (en) | Electric valve convenient to install |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |