CN204403533U - A kind of limit structure of final controlling element output shaft - Google Patents
A kind of limit structure of final controlling element output shaft Download PDFInfo
- Publication number
- CN204403533U CN204403533U CN201520053324.1U CN201520053324U CN204403533U CN 204403533 U CN204403533 U CN 204403533U CN 201520053324 U CN201520053324 U CN 201520053324U CN 204403533 U CN204403533 U CN 204403533U
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- Prior art keywords
- turbine
- controlling element
- final controlling
- output shaft
- worm screw
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Abstract
The utility model relates to a kind of limit structure of final controlling element output shaft, comprise final controlling element shell, output shaft, turbine and worm screw, in described final controlling element shell, right vertical installs worm screw, this worm screw engages with the turbine in left side in final controlling element shell, this turbine and output shaft are coaxially installed together, described turbine is sector structure, to the limiting stopper should installing a pair upper and lower setting on the left of the final controlling element outer casing inner wall of turbine.Turbine in this structure adopts fan toothing, assembling is simple, allotment turbine and worm time easier.The utility model structure is simple, design science reasonable, has saving space, is convenient to installation, volume essence littleization, the feature that compact structure, cost are low, volume is little; And the impact force produced when the self-locking of turbine and worm stall is little, adds turbine life.
Description
Technical field
The utility model belongs to actuation technologies field, especially a kind of limit structure of final controlling element output shaft.
Background technique
Final controlling element is main energy sources with electric energy, is used for driving the mechanism of valve.The rotation of final controlling element output shaft is less than 360 degree, is generally 90 degree of opening-closing processes just realizing valve and controls.
Traditional final controlling element output shaft is spacing all adopts worm gear drive mode, and namely turbine is circular full-depth tooth structure, by the underpart mounting limit block at output shaft, realizes spacing object.
In above-mentioned Conventional limit mode, turbine adopts all gear structure, and its shortcoming existed is: 1, take up room large, seriously constrains the trend of final controlling element essence littleization, sophistication.2, waste material, even the kind of drive of all gear, actual using scope also only has 120 degree, and remaining 2/3rds has all slatterned.3, need an extra increase mechanical position limitation mechanism, raise the cost; And when stall is spacing, traditional mechanical position-limit mechanism can bring very large moment of torsion to final controlling element, reduce the working life of turbine.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the limit structure of the final controlling element output shaft that a kind of structure is simple, volume is little, cost is low.
Scheme of the present utility model is achieved in that
A kind of limit structure of final controlling element output shaft, comprise final controlling element shell, output shaft, turbine and worm screw, in described final controlling element shell, right vertical installs worm screw, this worm screw engages with the turbine in left side in final controlling element shell, this turbine and output shaft are coaxially installed together, described turbine is sector structure, to the limiting stopper should installing a pair upper and lower setting on the left of the final controlling element outer casing inner wall of turbine bi-side.
And the angle between described turbine bi-side is 120 degree.
Advantage of the present utility model and good effect are:
Turbine in this structure adopts fan toothing, assembling is simple, allotment turbine and worm time easier.The utility model structure is simple, design science reasonable, has saving space, is convenient to installation, volume essence littleization, the feature that compact structure, cost are low, volume is little; And the impact force produced when the self-locking of turbine and worm stall is little, adds turbine life.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model;
Fig. 2 is that in Fig. 1, turbine rotates the working state schematic representation to top limiting stopper;
Fig. 3 is that in Fig. 1, turbine rotates the working state schematic representation to lowermost limit block;
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the utility model is described in further detail.
A kind of limit structure of final controlling element output shaft, as shown in Figure 1, comprise final controlling element shell 1, output shaft 3, turbine 4 and worm screw 5, in described final controlling element shell, right vertical installs worm screw, this worm screw engages with the turbine in left side in final controlling element shell, and this turbine and output shaft are coaxially installed together.
Innovative point of the present utility model is:
Described turbine is sector structure, and the included angle A between these turbine bi-side is 120 degree; To the limiting stopper 2 should installing a pair upper and lower setting on the left of the final controlling element outer casing inner wall of turbine bi-side.When turbine is rotated counterclockwise, undertaken spacing by the limiting stopper being positioned at top, as shown in Figure 2; When turbine turns clockwise, undertaken spacing by the limiting stopper being positioned at below, as shown in Figure 3.
Working principle of the present utility model is:
As shown in Figure 1, turbine can carry out the rotation motion within the scope of 120 degree to turbine and worm driver self-locking structure in final controlling element shell.When angle of revolution is more than 120 degree, self-locking will be realized and self-protection.Turbine is under worm screw drives, and the sphere of activities is 120 degree of scopes centered by output shaft, realizes the opening-closing process control that valve rotates 90.
Turbine in this structure adopts the design of fan toothing, has and has an effect as follows:
1, easier during simple, the allotment turbine and worm of assembling;
2, save space, be convenient to install;
3, volume essence littleization, compact structure;
4, cost-saving, volume reduces;
5, the impact produced when stall self-locking diminishes, and increases turbine life.
It is emphasized that; embodiment described in the utility model is illustrative; instead of it is determinate; therefore the utility model comprises the embodiment be not limited to described in embodiment; every other mode of executions drawn according to the technical solution of the utility model by those skilled in the art, belong to the scope of the utility model protection equally.
Claims (2)
1. the limit structure of a final controlling element output shaft, comprise final controlling element shell, output shaft, turbine and worm screw, in described final controlling element shell, right vertical installs worm screw, this worm screw engages with the turbine in left side in final controlling element shell, this turbine and output shaft are coaxially installed together, it is characterized in that: described turbine is sector structure, to the limiting stopper should installing a pair upper and lower setting on the left of the final controlling element outer casing inner wall of turbine bi-side.
2. the limit structure of final controlling element output shaft according to claim 1, is characterized in that: the angle between described turbine bi-side is 120 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520053324.1U CN204403533U (en) | 2015-01-26 | 2015-01-26 | A kind of limit structure of final controlling element output shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520053324.1U CN204403533U (en) | 2015-01-26 | 2015-01-26 | A kind of limit structure of final controlling element output shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204403533U true CN204403533U (en) | 2015-06-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520053324.1U Active CN204403533U (en) | 2015-01-26 | 2015-01-26 | A kind of limit structure of final controlling element output shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204403533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701780A (en) * | 2017-11-27 | 2018-02-16 | 田齐芳 | A kind of position limiting structure of actuator output shaft |
-
2015
- 2015-01-26 CN CN201520053324.1U patent/CN204403533U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701780A (en) * | 2017-11-27 | 2018-02-16 | 田齐芳 | A kind of position limiting structure of actuator output shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |