CN2152076Y - Spring pressure display - Google Patents
Spring pressure display Download PDFInfo
- Publication number
- CN2152076Y CN2152076Y CN 93230155 CN93230155U CN2152076Y CN 2152076 Y CN2152076 Y CN 2152076Y CN 93230155 CN93230155 CN 93230155 CN 93230155 U CN93230155 U CN 93230155U CN 2152076 Y CN2152076 Y CN 2152076Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- valve body
- spring
- pressure display
- spring 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a spring pressure display for single hydraulic props, comprising a valve body, a plunger, a spring, a casing, a sealing ring, and a retaining ring. The utility model is characterized in that the plunger (3) is installed in the inner hole of the valve body (4), and the casing (2) is connected together with the valve body (4) through screw threads. The upper end of the plunger (3) is made into a thin disk shape, and helical compression springs (1) are installed on the plunger (3) and at the inner part of the (2). After connected with a single hydraulic prop, the utility model can display the pressure value of the hydraulic prop at any time.
Description
The utility model relates to a kind of spring pressure display unit of using on hydraulic prop.
Hydraulic prop is most popular a kind of support apparatus in the present mine.Per tour will be measured pressure at least one time in order to guarantee to keep the safety in production, now the method that generally adopts is to use special-purpose manometer to be connected on the inlet of hydraulic prop triple-use valve to measure, manometer is unloaded after measurement finishes, every measurement once just needs mounting or dismounting once again, and is not only time-consuming but also require great effort.In order to address this problem, a pressure meter was once installed by Wujin, Jiangsu fail safe instrument factory on hydraulic prop.Pressure can show from pressure meter at any time like this, though no longer need to use the manometer pressure measurement, but because the underground work condition is more abominable, particularly when hydraulic prop is toppled over, pressure meter very easily damages, and will cause the liquid leakage in case damage, and manometric price is again than higher, cost of production is increased greatly, therefore be difficult to generally adopt.
It is a kind of simple in structure, easy to use, sturdy and durable that the purpose of this utility model is to provide, and cheap spring pressure display unit.
The utility model is achieved in that the fluid pressure that utilizes hydraulic prop inside promotes a plunger and moves upward and compress a spring, because Hooke's law is observed in the deformation of spring, i.e. the deformation that takes place under external force of spring is directly proportional with its suffered external force.Therefore according to the corresponding relation of pressure size with spring deformation, engrave a graduation mark at a certain distance, each bar graduation mark is represented certain pressure, just can demonstrate the pressure of hydraulic prop again according to the corresponding graduation mark in plunger upper end.
The utility model is installed on the hydraulic prop, can demonstrate the pressure of hydraulic prop at any time, therefore just not need to utilize again the manometer pressure measurement, simultaneously because the utility model is simple in structure, anti-ly bump, anti-pounding, the above-mentioned various shortcoming that has produced so also overcome setting pressure table on hydraulic prop.
Concrete structure of the present utility model is drawn by following embodiment and accompanying drawing thereof.
Fig. 1 is a sectional view of the present utility model.
Fig. 2 is the left view of Fig. 1.
With reference to Fig. 1, valve body (4) two ends up and down all is shaped on screw thread, and the lower end screw thread is used for connecting with hydraulic prop, the upper end shell (2) that is threaded.Plunger (3) is housed in the endoporus of valve body (4), in the top and the inside of shell (2) cylindroid helical-coil compression spring (1) is housed.Plunger (3) bottom has the twice ring-shaped groove, and one zero RunddichtringO (6) and polytetrafluoroethylene (PTFE) ring washer (5) respectively are housed in the per pass groove.A thin plate-like is made in the upper end of plunger (3), is used for transmitting the deflection that pressure also can show spring to spring.Shell (2) is made cylindrical shape, and the side has a slotted hole, and a side of slotted hole is carved with some graduation marks equably, can observe the residing position, thin plate-like upper surface of plunger (3) by slotted hole.For clarity, the external cylindrical surface of the thin plate-like upper end of plunger (3) can be painted redness.
Using method of the present utility model is that screw thread and the hydraulic prop with valve body (4) bottom links together, and makes pressure fluid act on the lower surface of plunger (3), promotes plunger (3) and moves upward, and makes spring (1) compression.At this moment can observe the pairing graduation mark in plunger (3) upper surface by the slotted hole on the shell (2), thereby demonstrate the pressure of hydraulic prop internal liquid.After the utility model and hydraulic prop link together, generally no longer unload, can demonstrate the pressure value of hydraulic prop at any time.
Claims (4)
1, spring pressure display unit of forming by spring (1), valve body (4), plunger (3), shell (2), it is characterized in that in the endoporus of valve body (4) plunger (3) being housed, shell (2) links together with screw thread and valve body (4), thin plate-like is made in the upper end of plunger (3), in the above and the inside of shell (2) cylindroid helical-coil compression spring (1) is housed.
2, spring pressure display unit according to claim 1 is characterized in that shell (2) makes cylindrical shape, and the side has slotted hole one, and a side of slotted hole is carved with graduation mark equably.
3, spring pressure display unit according to claim 1 is characterized in that the twice ring-shaped groove is arranged at the bottom of plunger (3), and an O RunddichtringO (6) and polytetrafluoroethylene (PTFE) back-up ring (5) respectively are housed in the per pass ring-shaped groove.
4, spring pressure display unit according to claim 1 is characterized in that valve body (4) lower end is shaped on screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93230155 CN2152076Y (en) | 1993-02-04 | 1993-02-04 | Spring pressure display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93230155 CN2152076Y (en) | 1993-02-04 | 1993-02-04 | Spring pressure display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2152076Y true CN2152076Y (en) | 1994-01-05 |
Family
ID=33806881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93230155 Expired - Fee Related CN2152076Y (en) | 1993-02-04 | 1993-02-04 | Spring pressure display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2152076Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197836A (en) * | 2016-08-29 | 2016-12-07 | 航宇救生装备有限公司 | A kind of with the pressure-detecting device that instruction function is electronically activated |
-
1993
- 1993-02-04 CN CN 93230155 patent/CN2152076Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197836A (en) * | 2016-08-29 | 2016-12-07 | 航宇救生装备有限公司 | A kind of with the pressure-detecting device that instruction function is electronically activated |
| CN106197836B (en) * | 2016-08-29 | 2019-03-19 | 航宇救生装备有限公司 | It is a kind of with the pressure-detecting device that instruction function is electronically activated |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |