CN209100751U - A kind of three-jaw cooperation drive mechanism - Google Patents
A kind of three-jaw cooperation drive mechanism Download PDFInfo
- Publication number
- CN209100751U CN209100751U CN201821663958.9U CN201821663958U CN209100751U CN 209100751 U CN209100751 U CN 209100751U CN 201821663958 U CN201821663958 U CN 201821663958U CN 209100751 U CN209100751 U CN 209100751U
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- jaw
- valve
- clutch collar
- valve rod
- transmission shaft
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Abstract
The utility model discloses a kind of three-jaws to cooperate drive mechanism, including three-jaw transmission shaft and three-jaw clutch collar, the bottom end of the three-jaw transmission shaft is provided with three-jaw clutch collar, limit valve rod is provided with below three-jaw clutch collar, the bottom end of three-jaw clutch collar is provided with valve stem nut corresponding with limit valve rod, the three-jaw transmission shaft includes steel pipe, and the top of steel pipe is provided with bearing；A kind of three-jaw cooperation drive mechanism is devised, solves the problems, such as that buried gate valve influences the stability of valve rod because valve rod is too long, the normal switch of valve can also be carried out without extension valve rod by realizing buried valve.
Description
Technical field
The utility model belongs to technical field of valve manufacturing, and in particular to a kind of three-jaw cooperation drive mechanism.
Background technique
Valve is for being opened and closed pipeline, control flow direction, the parameter (temperature, pressure and flow) of regulation and control pumped (conveying) medium
Pipeline fittings.According to its function, shut-off valve, check-valves, regulating valve etc. can be divided into.
Several big important components one of of the valve rod as valve, valve rod in the opening-closing process of valve not still movement parts, by
Power part, and be sealing element, it is primarily used to transmission, and the upper end connection executing agency of valve rod or handle, lower end are direct
Drive flashboard mobile, by screwing with valve stem nut, to realize the switch of valve, but valve rod can not be too long, too long valve rod
It is easy distortion in the opening-closing process of valve, influences the stability of valve rod.
Utility model content
The purpose of this utility model is to provide a kind of three-jaws to cooperate drive mechanism, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the utility model provides the following technical solutions: a kind of three-jaw cooperation drive mechanism, including three
Pawl transmission shaft and three-jaw clutch collar, the bottom end of the three-jaw transmission shaft are provided with three-jaw clutch collar, set below three-jaw clutch collar
It is equipped with limit valve rod, the bottom end of three-jaw clutch collar is provided with valve stem nut corresponding with limit valve rod, the three-jaw transmission shaft
Including steel pipe, the top of steel pipe is provided with bearing.
Uniformly divide as a further solution of the present invention: the three-jaw transmission shaft is spaced 120 ° in a circumferential direction
Cloth.
The steel pipe is seamless steel pipe as a further solution of the present invention,.
Compared with prior art, the utility model has the beneficial effects that devising a kind of three-jaw cooperation drive mechanism, solve
Because valve rod is too long to influence valve rod stability the problem of, realizing buried valve can also carry out buried gate valve without extension valve rod
The normal switch of valve.
Detailed description of the invention
Fig. 1 is structural schematic diagram when the corresponding three-jaw transmission shaft of the utility model and three-jaw clutch collar match；
Fig. 2 is the structural schematic diagram of the corresponding three-jaw transmission shaft of the utility model；
Fig. 3 is the structural schematic diagram that the corresponding three-jaw of the utility model engages sleeve；
Fig. 4 is the structural perspective that the corresponding three-jaw of the utility model engages sleeve；
In figure: 1- three-jaw transmission shaft, 2- three-jaw clutch collar, 3- valve stem nut, 4- limit valve rod, 11- bearing, 12- steel pipe.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are please referred to, the utility model provides a kind of technical solution: a kind of three-jaw cooperation transmission knot
Structure, including three-jaw transmission shaft 1 and three-jaw clutch collar 2, the bottom end of three-jaw transmission shaft 1 are provided with three-jaw clutch collar 2, three-jaw clutch collar
2 lower section is provided with limit valve rod 4, and the bottom end of three-jaw clutch collar 2 is provided with and limits the corresponding valve stem nut 3 of valve rod 4, and three
Pawl transmission shaft 1 includes steel pipe 12, and the top of steel pipe 12 is provided with bearing 11, in order to make three-jaw transmission shaft 1 to three-jaw clutch collar 2
Limit effect is more preferable, in the present embodiment, it is preferred that three-jaw transmission shaft 1 is spaced 120 ° in a circumferential direction and is uniformly distributed, and three-jaw connects
Trap 2 is also spaced 120 ° in a circumferential direction and is uniformly distributed, and three-jaw transmission shaft 1 and three-jaw clutch collar 2 cooperate, to prevent
Steel pipe 12 on three-jaw transmission shaft 1 is swung in the horizontal direction, so that fixed and guiding role is played to steel pipe 12, in use,
When rotating handwheel and opening or closing valve, power passes to three-jaw clutch collar 2 by three-jaw transmission shaft 1, three-jaw clutch collar 2 it is interior
Outer six Fang Peihe of six sides and valve stem nut 3 transmit torque to valve stem nut 3, the ladder on valve stem nut 3 and limit valve rod 4
Shape threaded engagement, the lifting of limit valve rod 4 is realized by the rotation of valve stem nut 3, and then opens or closes valve.
Referring to Fig. 2, in order to keep the structural strength of steel pipe 12 higher, in the present embodiment, it is preferred that steel pipe 12 is seamless steel
Pipe.
The working principle and process for using of the utility model: buried gate valve center high request is relatively high (about 3 meters), therefore
If lengthening limit valve rod 4, for valve when opening or closing, the stability for limiting valve rod 4 is poor, is easy distortion, and stablize
Property have large effect to the diameter of limit valve rod 4, if lengthening limit valve rod 4, limit the diameter also Ying Zengjia of valve rod 4, this
Will affect the overall structure of valve, and use three-jaw transmission shaft 1 and three-jaw clutch collar 2 to match structure when, can not have to plus
Long limit valve rod 4 can also realize the normally-open of buried valve, in use, power is logical when rotation handwheel opens or closes valve
It crosses three-jaw transmission shaft 1 and passes to three-jaw clutch collar 2, interior six side of three-jaw clutch collar 2 and outer six Fang Peihe of valve stem nut 3,
Torque passes to valve stem nut 3, and the trapezoidal thread on valve stem nut 3 and limit valve rod 4 screws, and passes through the rotation of valve stem nut 3
It realizes the lifting of limit valve rod 4, and then opens or closes valve.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (3)
1. a kind of three-jaw cooperates drive mechanism, including three-jaw transmission shaft (1) and three-jaw clutch collar (2), it is characterised in that: described three
The bottom end of pawl transmission shaft (1) is provided with three-jaw clutch collar (2), is provided with below three-jaw clutch collar (2) and is limited valve rod (4), and three
The bottom end of pawl clutch collar (2) is provided with valve stem nut (3) corresponding with limit valve rod (4), and the three-jaw transmission shaft (1) includes
Steel pipe (12), the top of steel pipe (12) are provided with bearing (11).
2. a kind of three-jaw according to claim 1 cooperates drive mechanism, it is characterised in that: the three-jaw clutch collar (2) exists
120 ° are spaced on circumferencial direction to be uniformly distributed.
3. a kind of three-jaw according to claim 2 cooperates drive mechanism, it is characterised in that: the steel pipe (12) is seamless steel
Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821663958.9U CN209100751U (en) | 2018-10-15 | 2018-10-15 | A kind of three-jaw cooperation drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821663958.9U CN209100751U (en) | 2018-10-15 | 2018-10-15 | A kind of three-jaw cooperation drive mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209100751U true CN209100751U (en) | 2019-07-12 |
Family
ID=67155143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821663958.9U Active CN209100751U (en) | 2018-10-15 | 2018-10-15 | A kind of three-jaw cooperation drive mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN209100751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307097A (en) * | 2018-10-15 | 2019-02-05 | 兰州高压阀门有限公司 | A kind of three-jaw cooperation drive mechanism |
-
2018
- 2018-10-15 CN CN201821663958.9U patent/CN209100751U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307097A (en) * | 2018-10-15 | 2019-02-05 | 兰州高压阀门有限公司 | A kind of three-jaw cooperation drive mechanism |
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