CN202300431U - Reinforced hydraulic prop - Google Patents
Reinforced hydraulic prop Download PDFInfo
- Publication number
- CN202300431U CN202300431U CN2011204308579U CN201120430857U CN202300431U CN 202300431 U CN202300431 U CN 202300431U CN 2011204308579 U CN2011204308579 U CN 2011204308579U CN 201120430857 U CN201120430857 U CN 201120430857U CN 202300431 U CN202300431 U CN 202300431U
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- piston rod
- piston
- hook
- hydraulic prop
- 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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- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a reinforced hydraulic prop. Currently, the hydraulic external injection type prop used in a coal wall in the coal mine industry of China has the following defects: the bearing pressure is low, the prop is easily damaged, the repair amount is large, it is difficult to bear the dynamic pressure of a top plate, the prop is seriously damaged, difficultly repaired and has high cost. The reinforced hydraulic prop comprises an oil cylinder (1), a piston rod (2) mounted in the oil cylinder, a piston (3) connected with the bottom of the piston rod, a double-layer seal ring (4) is mounted between the piston and the oil cylinder, a bottom seat device (5) is welded with the bottom of the oil cylinder, a three-function valve (6) is mounted on the top of the piston rod and an annular limit ring (7) is mounted on the lower part of the piston rod. The reinforced hydraulic prop is used in the coal mine.
Description
Technical field:
the utility model relates to a kind of colliery and uses mechanical field, is specifically related to a kind of enhancing hydraulic prop.
Background technology:
the low fragile amount of reprocessing of the pressure that born of the used monomer hydraulic pressure external poured pillar of our national colliery industry coal-face is big at present, the dynamic pressure that is difficult to bear top board, well damage, maintenance difficult, shortcomings such as cost height.
Summary of the invention:
The purpose of
the utility model provides a kind of easy to maintenance, and intensity is big, and is rational in infrastructure, non-damageable enhancing hydraulic prop.
Above-mentioned purpose realizes through following technical scheme:
a kind of enhancing hydraulic prop; Its composition comprises: oil cylinder, in the described oil cylinder piston rod is housed, and described piston rod bottom connects piston; Between described piston and the described oil cylinder double-layer seal circle is housed; The bottom weldering of described oil cylinder connects base device, and described piston rod part is equipped with triple-use valve, and described underpart of the piston rod is equipped with the annular stop ring.
described enhancing hydraulic prop; Be connected through hook between described hook and the described piston; Described triple-use valve is the 57MPa triple-use valve, and described base device comprises base, suspension ring, hook, spring, and described base by thread connects suspension ring; Described suspension ring coupling hook, described hook connects spring.
described enhancing hydraulic prop, described annular stop ring is contained in the top of described piston.
Beneficial effect:
1. the utility model have increased three of pressure and have used lock; Piston on the supercharging support piston bar is equipped with two y-type seal rings, and back-moving spring is sat the end of with and welded the suspension ring that are threaded; Oil cylinder and base are integrally welded, and tensile strength has increased by 1.5 times.
the utility model is welded into spacing snap ring ring-like; Base and oil cylinder adopt the welding combining structure, and intensity is higher than common hydraulic prop.
The double-deck Y-shaped ring that the piston of
the utility model adopts the band sealing thread to connect, good sealing effect, big, the anti-revisionist rate of intensity is low.
The back-moving spring of
the utility model adopts the suspension ring that are threaded, quick detachable maintenance.
The welded ring-like snap ring of spacing employing of
the utility model, effective.
The safety valve of
the utility model is higher than 1.5 times of common individual props, reduces expenses, gains in strength.
Description of drawings:
accompanying drawing 1 is the structural representation of this product.
The specific embodiment:
Embodiment 1:
a kind of enhancing hydraulic prop; Its composition comprises: oil cylinder 1, piston rod 2 is housed in the described oil cylinder, and described piston rod bottom connects piston 3; Between described piston and the described oil cylinder double-layer seal circle 4 is housed; The bottom weldering of described oil cylinder connects base device 5, and described piston rod part is equipped with triple-use valve 6, and described underpart of the piston rod is equipped with annular stop ring 7.
Embodiment 2:
Be connected through hook between
embodiment 1 described hook and the described piston; Described triple-use valve is the 57MPa triple-use valve; Described base device comprises base, suspension ring, hook, spring; Described base by thread connects suspension ring, described suspension ring coupling hook, and described hook connects spring.
described base by thread connects suspension ring 8, described suspension ring coupling hook 9, and described hook connects spring 10.
Embodiment 3:
Be connected through hook between
embodiment 3 described enhancing hydraulic props, described hook and described piston.Described annular stop ring is contained in the top of described piston.
Embodiment 4:
embodiment 1 or 2 or 3 described enhancing hydraulic props; Its composition of enhancing hydraulic prop comprises heightens 1.5 times triple-use valve, is contained in the spacing ring-like welding annulus on the piston rod, Y-shaped ring base that increase one deck band sealing thread connects and oil cylinder welding one; The nut hook; The suspension ring that are threaded, the nut of the nut structure screw thread suspension ring that are rotatably connected, the screw thread suspension ring are welded on the base.
Claims (3)
1. one kind strengthens hydraulic prop; Its composition comprises: oil cylinder is characterized in that: in the described oil cylinder piston rod is housed, described piston rod bottom connects piston; Between described piston and the described oil cylinder double-layer seal circle is housed; The bottom weldering of described oil cylinder connects base device, and described piston rod part is equipped with triple-use valve, and described underpart of the piston rod is equipped with the annular stop ring.
2. enhancing hydraulic prop according to claim 1; It is characterized in that: be connected through hook between described hook and the described piston; Described triple-use valve is the 57MPa triple-use valve, and described base device comprises base, suspension ring, hook, spring, and described base by thread connects suspension ring; Described suspension ring coupling hook, described hook connects spring.
3. enhancing hydraulic prop according to claim 2 is characterized in that: described annular stop ring is contained in the top of described piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204308579U CN202300431U (en) | 2011-11-03 | 2011-11-03 | Reinforced hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204308579U CN202300431U (en) | 2011-11-03 | 2011-11-03 | Reinforced hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300431U true CN202300431U (en) | 2012-07-04 |
Family
ID=46369353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204308579U Expired - Fee Related CN202300431U (en) | 2011-11-03 | 2011-11-03 | Reinforced hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300431U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615268A (en) * | 2013-12-17 | 2014-03-05 | 中国矿业大学 | Mine piston type clean water hydraulic prop |
| CN105298519A (en) * | 2015-11-26 | 2016-02-03 | 山东瀚业机械有限公司 | Crank fixed large-stroke internal injection type single hydraulic prop |
-
2011
- 2011-11-03 CN CN2011204308579U patent/CN202300431U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615268A (en) * | 2013-12-17 | 2014-03-05 | 中国矿业大学 | Mine piston type clean water hydraulic prop |
| CN103615268B (en) * | 2013-12-17 | 2016-06-15 | 中国矿业大学 | A kind of mine piston type clean water hydraulic prop |
| CN105298519A (en) * | 2015-11-26 | 2016-02-03 | 山东瀚业机械有限公司 | Crank fixed large-stroke internal injection type single hydraulic prop |
| CN105298519B (en) * | 2015-11-26 | 2017-06-13 | 山东瀚业机械有限公司 | A kind of crank fixes big stroke internal-injection type 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: 20120704 Termination date: 20131103 |