CN202327299U - Travel detection assembly of electric actuator - Google Patents
Travel detection assembly of electric actuator Download PDFInfo
- Publication number
- CN202327299U CN202327299U CN2011204596769U CN201120459676U CN202327299U CN 202327299 U CN202327299 U CN 202327299U CN 2011204596769 U CN2011204596769 U CN 2011204596769U CN 201120459676 U CN201120459676 U CN 201120459676U CN 202327299 U CN202327299 U CN 202327299U
- Authority
- CN
- China
- Prior art keywords
- switch
- detection assembly
- stroke
- travel
- wheel shaft
- 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.)
- Expired - Lifetime
Links
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- Control Of Position Or Direction (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model discloses a travel detection assembly of an electric actuator. The travel detection assembly comprises a full-travel switch, a full-travel feedback switch, an empty-travel switch, an empty-travel feedback switch and a limited cam group. The travel detection assembly is characterized in that all cams of the limited cam group are moveably sleeved at an overhanging end of a worm wheel shaft; and the overhanging end of the worm wheel shaft is provided with an external thread and rotatably connected with a fastening nut, and the all cams of the limited cam group are fixed on the worm wheel shaft under the screwing action of the fastening nut. The travel detection assembly provided by the utility model has simple structure and is convenient to adjust.
Description
Technical field
The utility model relates to a kind of YE that is used for valve control, what be specifically related to is a kind of stroke detection assembly of YE.
Background technique
YE is mainly used in the automatic control of valve, can be on the spot or long-range valve is controlled automatically through it, use very extensively in oil, chemical industry and other field.YE will show its working state, when idle stroke state or full stroke state, also will in time send feedback signal, and the control motor shuts down, and avoids motor overload to damage.Present YE; The detection of its stroke is accomplished through the stroke detection assembly; The structure of stroke detection assembly is such: it comprises four switches (being respectively full stroke switch, full stroke feedback switch, idle stroke switch and idle stroke feedback switch) and four limit cams; Four limit cams are all installed on worm-wheel shaft, switch of each limit cam control, and each limit cam is fixing on worm-wheel shaft through the Cock screw that is provided with separately.The shortcoming of said structure is, structure is complicated, and the contact position between limit cam and the switch is when regulating; Four limit cams will unclamp one by one; Also to tighten up one by one after adjusting finishes, more because the operating space of regulating is narrow and small, so regulate not only inconvenience but also loaded down with trivial details.
Summary of the invention
In view of the problem that present known technology exists, the technical problem that the utility model will solve is the stroke detection assembly that is to provide YE a kind of simple in structure, easy to adjust.
For solving the problems of the technologies described above, the utility model takes following technological scheme to accomplish:
The stroke detection assembly of YE; Comprise full stroke switch, full stroke feedback switch, idle stroke switch, idle stroke feedback switch and limit cam group; It is characterized in that: all cams of limit cam group are slidingly connected at the projecting end of worm-wheel shaft; The projecting end of worm-wheel shaft is provided with outside thread and is connected with and tightens up nut, and under the effect of screwing that tightens up nut, all cams of limit cam group are fixed on worm-wheel shaft.The cam of limit cam group is provided with two, controls full stroke switch and full stroke feedback switch for one, controls idle stroke switch and idle stroke feedback switch for one.
The beneficial effect of the utility model is: tightening up and unclamping by of all cams of limit cam group tightens up the unified control of nut; And tighten up the end cap of the direction of operating of nut towards final controlling element; The operating space of regulating is greatly improved, so the utility model is simple in structure, easy to adjust.In addition, the utility model is controlled four switches by two limit cams, and is not only simple in structure, and regulates more convenient.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is the structural representation of the utility model.
Embodiment
Accompanying drawing has been represented the technological scheme and the embodiment of the utility model, combines accompanying drawing to further describe each relevant details of embodiment below again.
With reference to accompanying drawing 1; The stroke detection assembly of this kind YE comprises full stroke switch 5, full stroke feedback switch 6, idle stroke switch 7, idle stroke feedback switch 8 and limit cam group, and the limit cam group is made up of overhead cam 3 and 2 two cams of following cam; Overhead cam 3 control full stroke switches 5 and full stroke feedback switch 6; Following cam 2 control idle stroke switches 7 and idle stroke feedback switch 8, overhead cam 3 is slidingly connected at the projecting end of worm-wheel shaft 1 with following cam 2, and the projecting end of worm-wheel shaft 1 is provided with outside thread and is connected with and tightens up nut 4; Under the effect of screwing that tightens up nut 4, overhead cam 3 is fixed on output shaft 1 with following cam 2.
Claims (2)
1. the stroke detection assembly of YE; Comprise full stroke switch, full stroke feedback switch, idle stroke switch, idle stroke feedback switch and limit cam group; It is characterized in that: all cams of limit cam group are slidingly connected at the projecting end of worm-wheel shaft; The projecting end of worm-wheel shaft is provided with outside thread and is connected with and tightens up nut, and under the effect of screwing that tightens up nut, all cams of limit cam group are fixed on worm-wheel shaft.
2. the stroke detection assembly of YE as claimed in claim 1, it is characterized in that: the cam of limit cam group is provided with two, and control full stroke switch and full stroke feedback switch are controlled idle stroke switch and idle stroke feedback switch for one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204596769U CN202327299U (en) | 2011-11-18 | 2011-11-18 | Travel detection assembly of electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204596769U CN202327299U (en) | 2011-11-18 | 2011-11-18 | Travel detection assembly of electric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202327299U true CN202327299U (en) | 2012-07-11 |
Family
ID=46439278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204596769U Expired - Lifetime CN202327299U (en) | 2011-11-18 | 2011-11-18 | Travel detection assembly of electric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202327299U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174864A (en) * | 2013-03-19 | 2013-06-26 | 沈国庆 | Limiting mechanism used for electric actuator of valve |
-
2011
- 2011-11-18 CN CN2011204596769U patent/CN202327299U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174864A (en) * | 2013-03-19 | 2013-06-26 | 沈国庆 | Limiting mechanism used for electric actuator of valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |