CN201770446U - External liquid filling type hydraulic jack - Google Patents
External liquid filling type hydraulic jack Download PDFInfo
- Publication number
- CN201770446U CN201770446U CN2010205007127U CN201020500712U CN201770446U CN 201770446 U CN201770446 U CN 201770446U CN 2010205007127 U CN2010205007127 U CN 2010205007127U CN 201020500712 U CN201020500712 U CN 201020500712U CN 201770446 U CN201770446 U CN 201770446U
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- China
- Prior art keywords
- piston
- triple
- piston rod
- liquid filling
- purpose valve
- 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 an external liquid filling type hydraulic jack used on a coal mine underground comprehensive mining working surface, which comprises an aluminum alloy cylinder, a piston rod, an 'I'-shaped piston, piston seal, a spring, a guiding sleeve, a triple-purpose valve and a handgrip. The jack is characterized in that the lower end of the piston rod is connected with the 'I'-shaped piston, and the triple-purpose valve is connected with a port of the lower portion of the aluminum alloy cylinder. The 'I'-shaped piston increases the contact length of the piston with the inner wall of the cylinder and reinforces stability. When operating the hydraulic jack, a user extends a liquid filling gun used for a single hydraulic support post into a liquid filling opening of the triple-purpose valve to lead the piston rod to extend out. When completing work, the user inserts a special handle into a liquid draining opening of the triple-purpose valve to drain liquid, and the piston rod is retracted under the action of the spring. A safety valve inside the triple-purpose valve functions in overload protection.
Description
Technical field: the utility model relates to the outer liquid injecting type hydraulic jack that the comprehensive mechanical coal mining driving surface uses under a kind of coal mine.
Background technology: fully-mechanized mining working uses a large amount of hydraulic props to carry out end support under the coal mine.The 12 regulation of hydraulic prop operating instruction, " forbid to use the hydraulic prop lifting and pass weight ".But this is defined in the scene and does not obtain fine execution, often causes hydraulic prop to damage and various fatal accident.
Summary of the invention: the utility model provides a kind of outer liquid injecting type hydraulic jack.Its hydraulic power is provided by the emulsion power pack of fully-mechanized mining working.It is made up of aluminium alloy cylinder, piston rod, " worker " font piston, piston packing, spring, orienting sleeve, triple-use valve, handgrip, it is characterized in that, piston-rod lower end is connected with " worker " font piston, and triple-use valve is connected with the interface of aluminium alloy cylinder bottom.During work, the filling gun that utilizes hydraulic prop to use stretches in the spout of triple-use valve, makes emulsion enter the aluminium alloy cylinder cavity of resorption, and it is protruding to promote piston and piston rod and against the force of the spring, finishes the work requirements of lifting or passing weight.After hours, use dedicated handle to insert the tap hole of triple-use valve, emulsion is discharged.Piston rod is regained under the effect of spring.Piston is made " worker " font, has increased the length of contact of piston and inboard wall of cylinder block, improves its strained condition, the stability when having increased work.Triple-use valve is formed one by safety valve, liquid-filling valve, dispersing valve, self-opening tapping when the load overload.
The practical application of outer liquid injecting type hydraulic jack has been stopped the violation of hydraulic prop and has been used and the pillar damage and the fatal accident that therefore cause, and effect is apparent.
Description of drawings: accompanying drawing is the utility model generalized section.
The specific embodiment: as shown in drawings, " worker " font piston (9) is connected with piston rod (12) lower end, and (10) are piston packing.Spring (11) is enclosed within on the piston rod (12).Orienting sleeve (2) is connected with piston rod (12) running-fit, and is connected with aluminium alloy cylinder (4) upper end.Triple-use valve (8) is connected with the interface (5) of aluminium alloy cylinder (4) bottom.(6) be tap hole, (7) are spout.Handgrip (3) is connected with aluminium alloy cylinder (4) top." worker " font piston (9) is whole to be made.Triple-use valve (8) is a valve integrated package, by safety valve, and liquid-filling valve, dispersing valve is formed, and makes one from technology.
Claims (1)
1. outer liquid injecting type hydraulic jack, it is made up of aluminium alloy cylinder, piston rod, " worker " font piston, piston packing, spring, orienting sleeve, triple-use valve, handgrip, it is characterized in that piston-rod lower end is connected with " worker " font piston, triple-use valve is connected with the interface of aluminium alloy cylinder bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205007127U CN201770446U (en) | 2010-08-16 | 2010-08-16 | External liquid filling type hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205007127U CN201770446U (en) | 2010-08-16 | 2010-08-16 | External liquid filling type hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201770446U true CN201770446U (en) | 2011-03-23 |
Family
ID=43750284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205007127U Expired - Fee Related CN201770446U (en) | 2010-08-16 | 2010-08-16 | External liquid filling type hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201770446U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922240A (en) * | 2014-03-19 | 2014-07-16 | 成都绿迪科技有限公司 | Hydraulic lifting device for machinery |
| CN113006837A (en) * | 2021-02-03 | 2021-06-22 | 陕西陕煤韩城矿业有限公司 | Modular single hydraulic prop |
-
2010
- 2010-08-16 CN CN2010205007127U patent/CN201770446U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922240A (en) * | 2014-03-19 | 2014-07-16 | 成都绿迪科技有限公司 | Hydraulic lifting device for machinery |
| CN113006837A (en) * | 2021-02-03 | 2021-06-22 | 陕西陕煤韩城矿业有限公司 | Modular single hydraulic prop |
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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: 20110323 Termination date: 20110816 |