CN202549713U - Contactless pressure relay - Google Patents
Contactless pressure relay Download PDFInfo
- Publication number
- CN202549713U CN202549713U CN2012201306063U CN201220130606U CN202549713U CN 202549713 U CN202549713 U CN 202549713U CN 2012201306063 U CN2012201306063 U CN 2012201306063U CN 201220130606 U CN201220130606 U CN 201220130606U CN 202549713 U CN202549713 U CN 202549713U
- Authority
- CN
- China
- Prior art keywords
- mount pad
- movable arms
- switch
- steel ball
- pressure
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The utility model discloses a contactless pressure relay which comprises a shell, wherein a base is sleeved in the shell; the base is provided with an oil channel which is communicated with a hydraulic oil pipe in a sealing mode; a plunger is arranged in the oil channel in a sliding mode; a mounting seat connected with the plunger is arranged in the shell; an elastic device is arranged between the mounting seat and the shell; the outer side of the shell is provided with a switching device; and a switching control device is arranged between the mounting seat and the switching device. The displacement of the elastic device inside the pressure relay caused by the hydraulic change is led out of the inside of the pressure relay; the function of amplifying the trigger pressure of the switching control device can be realized, and the trigger pressure range of the pressure relay is narrowed, so that the switching device rapidly enters an induction area and an induction switch is accurately triggered; and moreover, the phenomenon that the pressure relay generates an instable weak pulse signal is avoided when the pressure of the hydraulic system fluctuates, the pressure signal is accurately acquired, and the safety operation of the system controlled by the pressure relay is guaranteed.
Description
Technical field
The utility model relates to a kind of relay, relates in particular to a kind of pressure switch that uses in the hydraulic system that is applicable to.
Background technology
Pressure switch is the electrohydraulic control element that a kind of pressure signal with oil pressure converts the signal of telecommunication to; When oil liquid pressure reaches the pressure switch set pressure; Promptly send the signal of telecommunication, realize sequentially-operating with performance element, or close motor; System is quit work, thereby play the safeguard protection effect.Existing pressure switch is as shown in Figure 4; The housing 1 that comprises relay; Be set with pedestal 2 in the housing 1, plunger 3 is installed on the pedestal 2, plunger 3 ends connect a mount pad 4; Mount pad 4 one ends are connected with the bourdon tube 5 of housing 1 internal fixation, and the other end is connected with sensitive switch 16 in being fixed on housing 1.When the oil liquid pressure of pressure switch lower end oil-in feeding reaches setup pressure value; Promote to move on the plunger, displacement this moment is amplified the back through mount pad and is promoted the sensitive switch action, and the decrement that changes bourdon tube promptly can be regulated the operating pressure of pressure switch; Mainly there is following drawback in the pressure switch of this traditional structure; When the hydraulic system internal pressure was unstable, promptly pressure was in when the sensitive switch operating value is constantly floated up and down, and pressure switch can produce a kind of very unsettled faint pulse signal; Make the executive component generation misoperation that is attached thereto and cause deadlock or parking, be unfavorable for the safe operation of system.
The utility model content
The utility model technical problem to be solved provides a kind of highly sensitive, safe and reliable non-contact type pressure switch.
For solving the problems of the technologies described above, the technical scheme of the utility model is: the non-contact type pressure switch comprises housing; Be set with pedestal in the said housing, said pedestal is provided with the oil duct that is communicated with the hydraulic oil pipe sealing, and sliding in the said oil duct is provided with plunger; Be provided with the mount pad that is connected with said plunger in the said housing; Be provided with elastic device between said mount pad and the said housing, said hull outside is provided with switching device, is provided with switch controlling device between said mount pad and the said switching device.
As optimized technical scheme, said switching device comprises the Connection Block that is fixedly connected with said housing, and said Connection Block is provided with fixedly support arm, and said fixedly support arm is provided with inductive switch.
As optimized technical scheme; Said switch controlling device comprises between said inductive switch and the Connection Block and be installed in the rotation support device on the said fixedly support arm; Be rotatablely equipped with movable arms on the said rotation support device; Said movable arms one end connects said mount pad after passing said housing, and the said movable arms other end is corresponding with said inductive switch.
As optimized technical scheme, said rotation support device comprises two supporting seats that are arranged in parallel on said fixedly support arm, is provided with tumbler between the said supporting seat, and said movable arms is installed on the said tumbler.
As optimized technical scheme; Said tumbler comprises and being arranged on two said supporting seats and corresponding each other bolt hole; Be provided with steel ball in the said bolt hole, said movable arms is provided with installing sleeve, and said installation sleeve barrel is provided with the steel ball hole corresponding with said steel ball; Said steel ball hole diameter is provided with the caging bolt of said steel ball being pushed to said steel ball hole less than said steel ball size in the said bolt hole.
As optimized technical scheme, between said supporting seat and the said mount pad between the length of movable arms and said supporting seat and the said inductive switch length ratio of movable arms be 1: 6.
As optimized technical scheme, the end that said movable arms is positioned at said mount pad end is provided with groove, and said mount pad is provided with and stretches into the mount pad driving pawl that said groove and movable arms are slidingly matched.
As optimized technical scheme, said inductive switch is the photoelectric type inductive switch.
As the improvement to technique scheme, said Connection Block and said fixedly support arm are " L " shape integral structure.
Owing to adopted technique scheme, the non-contact type pressure switch comprises housing; Be set with pedestal in the said housing, said pedestal is provided with the oil duct that is communicated with the hydraulic oil pipe sealing, and sliding in the said oil duct is provided with plunger; Be provided with the mount pad that is connected with said plunger in the said housing; Be provided with elastic device between said mount pad and the said housing, said hull outside is provided with switching device, is provided with switch controlling device between said mount pad and the said switching device; The beneficial effect of the utility model is: switching device is installed and fixed outside, and can pressure switch is inner because hydraulic pressure changes the outside that the elastic device displacement that causes is drawn out to pressure switch; And according to lever principle; When obtaining the displacement of hydraulic pressure variation generation, can displacement be amplified; Amplify the effect that switch controlling device triggers pressure thereby play, the triggering pressure limit that helps to dwindle pressure switch makes switching device get into induction zone fast and also triggers inductive switch more accurately; When avoiding hydraulic system pressure to float, pressure switch produces the phenomenon of unstable faint pulse signal, and it is accurate to obtain pressure signal, has guaranteed the safe operation of pressure switch institute control system simultaneously.
Description of drawings
Fig. 1 is the external structure schematic diagram of the utility model embodiment;
Fig. 2 is the profile of the tumbler of the utility model embodiment;
Fig. 3 is the profile of the utility model embodiment;
Fig. 4 is the prior art constructions sketch map;
Among the figure: the 1-housing; The 2-pedestal; The 3-plunger; The 4-mount pad; The 5-bourdon tube; The 6-Connection Block; 7-is support arm fixedly; 8-photoelectric type inductive switch; The 9-movable arms; The 10-supporting seat; The 11-bolt hole; The 12-steel ball; The 13-caging bolt; The 14-installing sleeve; The 15-steel ball hole; The 16-sensitive switch.
Embodiment
Below in conjunction with accompanying drawing and embodiment, further set forth the utility model.In the detailed description below, some example embodiment of the utility model has only been described through the mode of explanation.Undoubtedly, those of ordinary skill in the art can recognize, under the situation of spirit that does not depart from the utility model and scope, can revise described embodiment with various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used to limit the protection range of claim.
Like the non-contact type pressure switch shown in Fig. 1, Fig. 2 and Fig. 3 are common; Comprise housing 1, be set with pedestal 2 in the said housing 1, said pedestal 2 is provided with the oil duct that is communicated with the hydraulic oil pipe sealing; Slide in the said oil duct and be provided with plunger 3; Be provided with the mount pad 4 that is connected with said plunger 3 in the said housing 1, be provided with elastic device between said mount pad 4 and the said housing 1, said elastic device can be set to bourdon tube 5 or other has the parts of elastic reaction; This part here repeats no more for the technology contents that the person of ordinary skill in the field knew.Said housing 1 outside is provided with switching device; Be provided with switch controlling device between said mount pad 4 and the said switching device; The pressure of hydraulic system changes drive mount pad 4 and bourdon tube 5 generation displacements in use, utilizes mount pad 4 drives to be installed in the housing 1 outside control device that opens the light again and comes the control switch device action.
Said switching device comprises the Connection Block 6 that is fixedly connected with said housing 1; Said Connection Block 6 is provided with fixedly support arm 7; Said fixedly support arm 7 is provided with inductive switch; And said inductive switch is a photoelectric type inductive switch 8, and photoelectric type inductive switch 8 is electrically connected outside executive component, is used to control the operation of dynamical system; Said Connection Block 6 is " L " shape integral structure with said fixedly support arm 7, is convenient to install and fix, and helps to reduce production technology.
Switch controlling device described in the present embodiment comprises the rotation support device that between said photoelectric type inductive switch 8 and Connection Block 6, is provided with on the said fixedly support arm 7; Be rotatablely equipped with movable arms 9 on the said rotation support device; Said movable arms 9 one ends pass said housing 1 back and connect said mount pad 4; Said movable arms 9 other ends are corresponding with said inductive switch; Wherein said rotation support device comprises two supporting seats 10 that are arranged in parallel on the said fixedly support arm 7, is provided with tumbler between the said supporting seat 10, and said movable arms 9 is installed on the said tumbler; And said tumbler comprises and being arranged on two said supporting seats 10 and corresponding each other bolt hole 11; Be provided with steel ball 12 in the said bolt hole 11; Said movable arms 9 is provided with installing sleeve 14, and said installing sleeve 14 walls are provided with the steel ball hole 15 corresponding with said steel ball 12, and said steel ball hole 15 diameters are less than said steel ball 12 diameters; Be provided with the caging bolt 13 of said steel ball 12 being pushed to said steel ball hole 15 in the said bolt hole 11, be convenient to cooperate 9 actions of drive movable arms.
Said steel ball hole 15 diameters of present embodiment are less than said steel ball 12 diameters; Thereby make steel ball 12 can only partly enter in the installing sleeve 14; Another part then is positioned at bolt hole 11; Thereby reach the rotation work that movable arms 9 is accomplished in the cooperation that utilizes caging bolt 13, bolt hole 11, installing sleeve 14 and steel ball 12, and movable arms 9 is a fulcrum with steel ball 12 when rotating; The steel ball 12 that is provided with makes installing sleeve 14 put contact with the formation that contacts between the steel ball 12; The frictional force when thereby the minimizing of maximum possible contacts between the two; Help to improve the sensitivity of switch controlling device action; To guarantee the pressure switch action in time, guarantee the rapid property of external impetus system operation control; And between said supporting seat 10 and the said mount pad 4 between the length of movable arms 9 and said supporting seat 10 and the said photoelectric type inductive switch length ratio of movable arms 9 be 1: 6; Be convenient to hydraulic system generation pressure and change when making mount pad 4 produce displacements, can the displacement enlargement variable signal.To change the displacement that brings is drawn out to pressure switch by movable arms 9 housing 1 outside because of hydraulic pressure; Thereby change and the displacement enlargement signal; And then avoid former pressure switch to change the faint inductive impulse signal that brings because of hydraulic pressure frequently floats; The executive component of having stopped to be connected with pressure switch helps to guarantee safety, the stable operation of whole system because of the phenomenon of perseveration appears in pulse signal.
The end that said movable arms 9 is positioned at said mount pad 4 ends is provided with groove; Said mount pad 4 is provided with and stretches into the mount pad driving pawl that said groove and movable arms 9 are slidingly matched; Improving the flexibility of movable arms 9 actions, with guarantee whole signal fast, output timely.
The course of work of the utility model is:
When the oil liquid pressure of pressure switch lower end oil-in feeding reaches setup pressure value, promote to move on the plunger 3, mount pad 4 drives the movable arms 9 that is attached thereto and produces displacement together simultaneously; Utilize lever principle; With steel ball 12 is fulcrum, and after the displacement that movable arms 9 produces plunger 3 was amplified, the photoelectric type inductive switch 8 of support arm 7 ends contacted with being installed in fixedly; Photoelectric type inductive switch 8 just sends control signal to performance element, accomplishes the operation control of external impetus system.
More than show and described the advantage of basic principle, principal character and the utility model of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (9)
1. the non-contact type pressure switch comprises housing, is set with pedestal in the said housing; Said pedestal is provided with the oil duct that is communicated with the hydraulic oil pipe sealing; Slide in the said oil duct and be provided with plunger, be provided with the mount pad that is connected with said plunger in the said housing, be provided with elastic device between said mount pad and the said housing; It is characterized in that: said hull outside is provided with switching device, is provided with switch controlling device between said mount pad and the said switching device.
2. non-contact type pressure switch as claimed in claim 1 is characterized in that: said switching device comprises the Connection Block that is fixedly connected with said housing, and said Connection Block is provided with fixedly support arm, and said fixedly support arm is provided with inductive switch.
3. non-contact type pressure switch as claimed in claim 2; It is characterized in that: said switch controlling device comprises between said inductive switch and the Connection Block and be installed in the rotation support device on the said fixedly support arm; Be rotatablely equipped with movable arms on the said rotation support device; Said movable arms one end connects said mount pad after passing said housing, and the said movable arms other end is corresponding with said inductive switch.
4. non-contact type pressure switch as claimed in claim 3; It is characterized in that: said rotation support device comprises two supporting seats that are arranged in parallel on said fixedly support arm; Be provided with tumbler between the said supporting seat, said movable arms is installed on the said tumbler.
5. non-contact type pressure switch as claimed in claim 4; It is characterized in that: said tumbler comprises and being arranged on two said supporting seats and corresponding each other bolt hole; Be provided with steel ball in the said bolt hole, said movable arms is provided with installing sleeve, and said installation sleeve barrel is provided with the steel ball hole corresponding with said steel ball; Said steel ball hole diameter is provided with the caging bolt of said steel ball being pushed to said steel ball hole less than said steel ball size in the said bolt hole.
6. non-contact type pressure switch as claimed in claim 4 is characterized in that: between said supporting seat and the said mount pad between the length of movable arms and said supporting seat and the said inductive switch length ratio of movable arms be 1: 6.
7. non-contact type pressure switch as claimed in claim 3 is characterized in that: the end that said movable arms is positioned at said mount pad end is provided with groove, and said mount pad is provided with the mount pad driving pawl that stretches into said groove and be slidingly matched with said movable arms.
8. like the described non-contact type pressure switch of the arbitrary claim of claim 2-7, it is characterized in that: said inductive switch is the photoelectric type inductive switch.
9. non-contact type pressure switch as claimed in claim 8 is characterized in that: said Connection Block and said fixedly support arm are " L " shape integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201306063U CN202549713U (en) | 2012-03-31 | 2012-03-31 | Contactless pressure relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201306063U CN202549713U (en) | 2012-03-31 | 2012-03-31 | Contactless pressure relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202549713U true CN202549713U (en) | 2012-11-21 |
Family
ID=47170303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201306063U Withdrawn - After Issue CN202549713U (en) | 2012-03-31 | 2012-03-31 | Contactless pressure relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202549713U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623239A (en) * | 2012-03-31 | 2012-08-01 | 潍坊金丝达环境工程股份有限公司 | Non-contact type pressure relay |
| CN103390526A (en) * | 2013-07-25 | 2013-11-13 | 恒丰赛特实业(上海)有限公司 | Logic switch and lever thereof |
-
2012
- 2012-03-31 CN CN2012201306063U patent/CN202549713U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623239A (en) * | 2012-03-31 | 2012-08-01 | 潍坊金丝达环境工程股份有限公司 | Non-contact type pressure relay |
| CN102623239B (en) * | 2012-03-31 | 2014-04-09 | 潍坊金丝达环境工程股份有限公司 | Non-contact type pressure relay |
| CN103390526A (en) * | 2013-07-25 | 2013-11-13 | 恒丰赛特实业(上海)有限公司 | Logic switch and lever thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206816574U (en) | A kind of oil tank liquid level alarm | |
| CN103091024B (en) | Push-pull force testing device of actuator | |
| CN104526327A (en) | Membrane press fit machine of vacuum power booster production line | |
| CN202549713U (en) | Contactless pressure relay | |
| CN201794852U (en) | Built-in displacement feedback oil cylinder | |
| CN103032289B (en) | Plunger pump and there is the cellanalyzer of this plunger pump | |
| CN103011004A (en) | Real-time monitoring disk brake with pressure sensor | |
| CN101012048A (en) | Precise multifunctional lifting platform | |
| CN201178064Y (en) | Automatic control switch for water pump | |
| CN102623239B (en) | Non-contact type pressure relay | |
| CN104179910A (en) | Transmission mechanism with automatic ascending and descending function | |
| CN210829979U (en) | Novel structure capable of monitoring state of large-stroke hydraulic valve | |
| CN210510488U (en) | Valve seat stroke indicating system | |
| CN203095517U (en) | Jack stroke limit device | |
| CN204284081U (en) | A kind of mechanized bridge stacking adapter cylinder position detector | |
| CN203190941U (en) | Novel gate in-place sensor | |
| CN204300024U (en) | A kind of intelligent Bidirectional piston type oil cylinder | |
| CN203456378U (en) | Submerged motor pump float switch | |
| CN102756051A (en) | Flywheel brake device for punch press | |
| CN204008138U (en) | Shaft sleeve sliding bearing rectilinear motion frictional wear test device | |
| CN203486700U (en) | Hydraulic buffering device | |
| CN203478941U (en) | Kiln position detection device of large-scale rotary kiln | |
| CN208855628U (en) | Brake system foot pedal sensing device target body cell | |
| CN207335671U (en) | A kind of detection device for plated film stator | |
| CN203248835U (en) | Valve element position monitoring device for reciprocating type hydraulic reversing slide valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20140409 |
|
| RGAV | Abandon patent right to avoid regrant |