CN201723233U - Mine ground pressure indicating device - Google Patents
Mine ground pressure indicating device Download PDFInfo
- Publication number
- CN201723233U CN201723233U CN2010202058057U CN201020205805U CN201723233U CN 201723233 U CN201723233 U CN 201723233U CN 2010202058057 U CN2010202058057 U CN 2010202058057U CN 201020205805 U CN201020205805 U CN 201020205805U CN 201723233 U CN201723233 U CN 201723233U
- Authority
- CN
- China
- Prior art keywords
- mine
- valve
- piston rod
- cylinder
- ground 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 relates to a mine ground pressure indicating device suitable for being installed and used on the support jack of a coal mine underground hydraulic support. At present, no device for measuring mine pressure in the setting value range of the safety valve of the hydraulic support is available, but the utility model provides the device. The device consists of a scale, a triangular pointer, a piston rod, a piston, a spring, a cylinder, a cylinder liquid inlet, a valve, a liquid inlet pipe and a cylinder clamp. The utility model is characterized in that the cylinder clamp is connected with a support jack, the cylinder liquid inlet is connected with the valve, and the valve is connected with the lower cavity connector of the support jack by the liquid inlet pipe. As the lower cavity of the support jack is communicated with the cylinder lower cavity of the mine ground pressure indicating device, the piston rod of the mine ground pressure indicating device extends out when mine pressure values do not exceed the setting value of the safety valve. When mine ground pressure decreases, the piston rod retracts under the spring action. The pointer connected with the piston rod indicates mine ground pressure variation values on the scale, and provides reference for plate jacking management. Plate jacking accidents are avoided, and safe production is ensured.
Description
Technical field: the utility model relates to mine pressure indicating device under a kind of coal mine.
Background technology: mine pressure is for Safety of Coal Mine Production, and roof control has inseparable relation.To the monitoring of mine pressure, only be to realize in the prior art by the safety valve of hydraulic support and pumping plant is adjusted.When changing in the setting valve scope of mine pressure at safety valve, the size of mine pressure is then unknowable, only depends on miner's experience to assess, and this has brought uncertain factor to safety in production.
Summary of the invention: the utility model provides a kind of mine pressure indicating device that is installed on the hydraulic support supporting jack.It is made up of scale, triangle pointer, piston rod, piston, spring, cylinder body, cylinder body inlet, valve, feed tube, cylinder body Ka Gu, it is characterized in that, cylinder body Ka Gu is connected with hydraulic support supporting jack, the cylinder body inlet is connected with valve, valve is connected with feed tube, and feed tube is connected with hydraulic support supporting jack cavity of resorption interface.
Be the work relationship between clearer and more definite mine pressure indicating device and the hydraulic support support jack.Now in conjunction with the accompanying drawings: supporting its lower end of jack (18) and base member case (14) hinge joint, base member case (14) places on the base plate (13).Piston rod (19) and back timber (20) hinge joint, back timber (20) roof supporting (21) also produces setting load.When top board (21) produces ore deposit pressure P, by back timber (20) piston rod (19) is descended, piston (16) then makes the interior fluid pressure of the cavity of resorption (15) of supporting jack (18) increase.When the pressure of this increase is no more than the setting valve of safety valve (9), then by supporting the interface (12) of jack (18) bottom, feed tube (11), valve (10), cylinder body interface (8) enters in the cavity of resorption (7) of mine pressure indicating device cylinder body (4), and piston rod (3) is stretched out; P reduces when mine pressure, under the effect of spring (5), and piston rod (3) withdrawal.Piston rod (3) is connected with triangle pointer (2), thereby can go up the variation of interpretation mine pressure value at scale (1).When not using, valve (10) is closed as this device.
This mine pressure indicating device application in practice provides foundation for the roof control of coal-face, when mine pressure frequently manifests, can in time take effective supporting measure, prevents the top board slump, guarantees safe production.
Description of drawings: accompanying drawing is the utility model part section and working state schematic representation.
The specific embodiment: cylinder body Ka Gu (17) is connected with cylinder body (4), and scale (1) is connected with cylinder body Ka Gu (17) left end.Ka Gu (17) is connected with supporting jack (18).Piston (6) is connected with piston rod (3) lower end.Spring (5) is enclosed within on the piston rod (3), and triangle pointer (2) is connected with piston rod (3) upper end.Inlet (8) is arranged at cavity of resorption (7) bottom of cylinder body (4), and inlet (8) is connected with valve (10), and valve (10) is connected with feed tube (11).Feed tube (11) is connected with the liquid outlet (12) of the cavity of resorption (15) of supporting jack (18).(9) be safety valve.Triangle pointer (2) coating Red reflectorized material, scale (1) coating white reflectorized material.
Claims (1)
1. mine pressure indicating device, it is made up of scale, triangle pointer, piston rod, piston, spring, cylinder body, cylinder body inlet, valve, feed tube, cylinder body Ka Gu, it is characterized in that, cylinder body Ka Gu is connected with hydraulic support supporting jack, the cylinder body inlet is connected with valve, valve is connected with feed tube, and feed tube is connected with hydraulic support supporting jack cavity of resorption interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202058057U CN201723233U (en) | 2010-05-18 | 2010-05-18 | Mine ground pressure indicating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202058057U CN201723233U (en) | 2010-05-18 | 2010-05-18 | Mine ground pressure indicating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201723233U true CN201723233U (en) | 2011-01-26 |
Family
ID=43491552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202058057U Expired - Fee Related CN201723233U (en) | 2010-05-18 | 2010-05-18 | Mine ground pressure indicating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201723233U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298520A (en) * | 2015-11-25 | 2016-02-03 | 安徽理工大学 | Mine support |
| CN105350990A (en) * | 2015-11-25 | 2016-02-24 | 安徽理工大学 | Mining support having double pressure indicating function |
| CN105401964A (en) * | 2015-11-25 | 2016-03-16 | 安徽理工大学 | Mining bracket capable of indicating top plate pressure |
-
2010
- 2010-05-18 CN CN2010202058057U patent/CN201723233U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298520A (en) * | 2015-11-25 | 2016-02-03 | 安徽理工大学 | Mine support |
| CN105350990A (en) * | 2015-11-25 | 2016-02-24 | 安徽理工大学 | Mining support having double pressure indicating function |
| CN105401964A (en) * | 2015-11-25 | 2016-03-16 | 安徽理工大学 | Mining bracket capable of indicating top plate pressure |
| CN105298520B (en) * | 2015-11-25 | 2017-06-27 | 安徽理工大学 | A kind of mining bracket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20110518 |