CN204720332U - A kind of time-delay limit switch - Google Patents
A kind of time-delay limit switch Download PDFInfo
- Publication number
- CN204720332U CN204720332U CN201520246490.3U CN201520246490U CN204720332U CN 204720332 U CN204720332 U CN 204720332U CN 201520246490 U CN201520246490 U CN 201520246490U CN 204720332 U CN204720332 U CN 204720332U
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- China
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- time
- valve
- grease chamber
- contact
- limit switch
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of time-delay limit switch, belong to electric controling switch device technique field, its composition mainly comprises back-moving spring, unidirectional valve, piston, fixed contact, moving contact, piston rod, power transmission spring, contact, airtight grease chamber epicoele, airtight grease chamber cavity of resorption, choke valve.Described fixed contact and travel switch valve body affixed; Described moving contact and piston rod affixed; Described unidirectional valve is arranged in piston; Described choke valve is arranged on the oil duct between airtight grease chamber upper and lower cavity.Choke valve can regulate the turn-on time of the dynamic and static contact of time-delay limit switch, and unidirectional valve ensures the rapid reset of travel switch.The time delay that the utility model can realize motion travel position stops, and compact conformation, has the complex function of time-delay valve and stroke valve.
Description
Technical field
The utility model relates to electric controling switch device technique field, refers in particular to time-delay limit switch.
Background technology
At industrial control field, the terminal of the mechanical journey of being expert at of reciprocating motion, often requires the stop keeping a period of time.The control program often adopted at present, after travel switch receives position signalling, position signalling is passed to the time relay, controlled the time of staying of mechanical stroke end by the time relay.This control mode, required electric component is more, and take up room large, cost is higher.
Summary of the invention
The purpose of this utility model is to provide a kind of time-delay limit switch, and its structure is simple, and element integrated level is high, easy to operate, can realize the delays time to control of motion travel position.
The purpose of this utility model realizes as follows:
A kind of time-delay limit switch, mainly comprises moving contact, fixed contact, airtight grease chamber, piston rod, piston, unidirectional valve, choke valve, power transmission spring, back-moving spring, contact; Described fixed contact and valve body affixed, described moving contact and piston rod one end affixed, described unidirectional valve is arranged on internal piston, power transmission spring is housed between described contact and piston rod, described back-moving spring is arranged on the cavity of resorption of airtight grease chamber, and the oil circuit between described airtight grease chamber upper and lower cavity is equipped with choke valve.
As preferably, described time-delay limit switch, its airtight grease chamber piston is equipped with unidirectional valve, achieves hydraulic oil from airtight grease chamber epicoele to the quick flowing of cavity of resorption, ensures the Rapid reset of time-delay limit switch.
As preferably, described time-delay limit switch, by changing the choke valve openings of sizes between airtight grease chamber upper and lower cavity on oil circuit, realizes the adjustment of the delay time of travel switch.
The beneficial effects of the utility model are, the delay time of time-delay limit switch can realize electrodeless adjustment, and delayed contact resets rapidly, and safe and reliable, volume is little, and cost is low.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
In figure, 1 – back-moving spring; 2 – sealing rings; 3 – unidirectional valves; 4 – pistons; 5 – fixed contacts; 6 – moving contacts; 7 – piston rods; 8 – power transmission springs; 9 – contacts; 10 – airtight grease chamber epicoeles; 11 – choke valves; 12 – airtight grease chamber cavity of resorptions.
embodiment:
With reference to accompanying drawing 1, time-delay limit switch, mainly comprises: back-moving spring 1, sealing ring 2, unidirectional valve 3, piston 4, fixed contact 5, moving contact 6, piston rod 7, power transmission spring 8, contact 9, airtight grease chamber epicoele 10, choke valve 11, airtight grease chamber cavity of resorption 12.Described fixed contact 5 is affixed with time-delay limit switch valve body, and described moving contact 6 is affixed with piston rod 7, and described unidirectional valve 3 is arranged in piston 4.
Particularly, when contact 9 is subject to external force, move downward at the effect lower piston rod 7 of power transmission spring 8, piston 4 compresses the fluid in airtight grease chamber cavity of resorption 12, pressure oil enters airtight grease chamber epicoele 10 through choke valve 11, the translational speed of piston 4 is subject to the viscosity of hydraulic oil and the restriction of choke valve 11 openings of sizes, and the sealing of airtight grease chamber upper and lower cavity is ensured by sealing ring 2.By adjusting the opening of choke valve 11, realize the adjustment of travel switch moving contact 6 and fixed contact 5 turn-on time.
Further, after the external force of contact 9 is cancelled, piston 4, under the effect of back-moving spring 1, moves upward.Fluid in airtight grease chamber epicoele 10, is entered in airtight grease chamber cavity of resorption 12 by the unidirectional valve 3 in piston 4, thus achieves the rapid reset of time-delay limit switch.
The foregoing describe general principle of the present utility model and principal character.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall within the scope of claimed the utility model, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a time-delay limit switch, mainly comprises moving contact, fixed contact, airtight grease chamber, piston rod, piston, unidirectional valve, choke valve, power transmission spring, back-moving spring, contact; It is characterized in that: described fixed contact and valve body affixed, described moving contact and piston rod one end affixed, described unidirectional valve is arranged on internal piston, power transmission spring is housed between described contact and piston rod, described back-moving spring is arranged on the cavity of resorption of airtight grease chamber, and the oil circuit between described airtight grease chamber upper and lower cavity is equipped with choke valve.
2. a kind of time-delay limit switch according to claim 1, is characterized in that: airtight grease chamber piston is equipped with unidirectional valve, achieves hydraulic oil from airtight grease chamber epicoele to the quick flowing of cavity of resorption, ensures the Rapid reset of time-delay limit switch.
3. a kind of time-delay limit switch according to claim 1, is characterized in that: by changing the choke valve openings of sizes between airtight grease chamber upper and lower cavity on oil circuit, achieve the adjustment of the delay time of travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520246490.3U CN204720332U (en) | 2015-04-22 | 2015-04-22 | A kind of time-delay limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520246490.3U CN204720332U (en) | 2015-04-22 | 2015-04-22 | A kind of time-delay limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204720332U true CN204720332U (en) | 2015-10-21 |
Family
ID=54319308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520246490.3U Expired - Fee Related CN204720332U (en) | 2015-04-22 | 2015-04-22 | A kind of time-delay limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204720332U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979770A (en) * | 2019-05-13 | 2019-07-05 | 梁仓平 | High-tension circuit safe opening method is made using timing closing mode |
| CN110047665A (en) * | 2019-05-13 | 2019-07-23 | 梁仓平 | The automation control method connected safely applied to high-tension circuit |
| CN110459415A (en) * | 2019-07-22 | 2019-11-15 | 惠州市弘宝电器有限公司 | A kind of slow resetting apparatus of energy storage type and delay switch |
| CN110916353A (en) * | 2019-11-25 | 2020-03-27 | 闫泰来 | Automatic adjust support length balance table |
| CN114777022A (en) * | 2022-04-07 | 2022-07-22 | 国网冀北电力有限公司张家口供电公司 | Pressure regulating device, electrical equipment gas density diagnosis and control system and method |
| CN110459415B (en) * | 2019-07-22 | 2024-05-31 | 惠州市弘宝电器有限公司 | Energy storage type slow reset device and time delay switch |
-
2015
- 2015-04-22 CN CN201520246490.3U patent/CN204720332U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979770A (en) * | 2019-05-13 | 2019-07-05 | 梁仓平 | High-tension circuit safe opening method is made using timing closing mode |
| CN110047665A (en) * | 2019-05-13 | 2019-07-23 | 梁仓平 | The automation control method connected safely applied to high-tension circuit |
| CN110459415A (en) * | 2019-07-22 | 2019-11-15 | 惠州市弘宝电器有限公司 | A kind of slow resetting apparatus of energy storage type and delay switch |
| CN110459415B (en) * | 2019-07-22 | 2024-05-31 | 惠州市弘宝电器有限公司 | Energy storage type slow reset device and time delay switch |
| CN110916353A (en) * | 2019-11-25 | 2020-03-27 | 闫泰来 | Automatic adjust support length balance table |
| CN114777022A (en) * | 2022-04-07 | 2022-07-22 | 国网冀北电力有限公司张家口供电公司 | Pressure regulating device, electrical equipment gas density diagnosis and control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20160422 |