CN201890739U - Three-in-one integrated centre-hole jack - Google Patents
Three-in-one integrated centre-hole jack Download PDFInfo
- Publication number
- CN201890739U CN201890739U CN2011200289920U CN201120028992U CN201890739U CN 201890739 U CN201890739 U CN 201890739U CN 2011200289920 U CN2011200289920 U CN 2011200289920U CN 201120028992 U CN201120028992 U CN 201120028992U CN 201890739 U CN201890739 U CN 201890739U
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- CN
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- Prior art keywords
- jack
- cylinder
- whole
- oil
- outer shell
- 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 three-in-one integrated centre-hole jack, which comprises an oil inlet cylinder, a return oil cylinder, a piston, a three-in-one cylinder body, a rear hold-down plate, a centre-hole barrel and other parts, an oil inlet nipple is arranged outside the oil inlet cylinder, and a return oil nipple is arranged outside the return oil cylinder. The number of sealing parts in use is reduced, the sealing property of the equipment is enhanced, meanwhile, the strength of the jack is enhanced, the weight of the jack is reduced, the jack is quick to mount and convenient to operate in the process of construction, and thereby the efficiency of construction is increased.
Description
Technical field
The utility model relates to the hydraulic jack technical field, specifically belongs to three-in-one whole feedthrough jack.
Background technology
Hydraulic jack is the indispensable equipment in the high ferro pre-stress construction, utilize the jack tension high strength steel strand,, apply prestress for the high ferro concrete component by group's ground tackle clamping steel strand, improve the loading strength of member, make member have good resistance to cleavage and earthquake resistance and prevention performance simultaneously.
Tradition feedthrough jack inner structure mainly by: outer shell, plug, punching tube, piston, rear side housing constitute with front end cover, and end cap, plug, punching tube seal with outer shell junction employing sealing member thereafter, and the sealing member bearing capacity generally is no more than 30 MPa.And jack nominal operation oil pressure is generally 50MPa, and therefore, sealing member is under high pressure worked for a long time, and can reduce service life, occurs leakage of oil, oil impregnate phenomenon after the wearing and tearing, and the maintenance of equipment rate is increased, and can not satisfy the construction requirement of high ferro concrete component.
The utility model content
The purpose of this utility model provides a kind of three-in-one whole feedthrough jack, the higher outer shell of oil pressure, plug, rear side housing are made whole pattern, reduce the usage quantity of sealing member, the sealing property of raising equipment, improved the intensity of jack simultaneously, alleviated the weight of jack, in work progress, installed rapidly, easy to operate, improved operating efficiency.
The technical solution adopted in the utility model is as follows:
Three-in-one whole feedthrough jack, comprise piston, front end cover, oil return cylinder, oil-feed cylinder, rear fender, punching tube, also include the three-in-one whole outer shell that outer shell, plug, rear side housing are connected as a single entity and constitute, described oil-feed cylinder is provided with inlet nozzle outward, and the oil return cylinder is provided with oil return nozzle outward.
Be provided with the sealing front end cover between the outer wall of described piston and the outer inside wall of cylinder.
The three-in-one whole feedthrough jack principle of work of the utility model:
1, to jack A road (tension cylinder) fuel feeding, carries out stretch-draw.Regulate the oil pump flow regulating valve, with control oil pressure height and tensioning speed.
2, when piston is overhanging, the moveable anchor intermediate plate clamps steel strand voluntarily.
3, when reaching the design pulling force or during at the also surplus about 10mm of piston stroke, should stopping to A road fuel feeding, can circle round flow regulating valve this moment, while cycle shutoff valve, and A road differential pressure is to zero point.
4, to jack B road (kicker cylinder) fuel feeding, return piston stroke.So far, finished the single tension circulation.Compared with the prior art, the beneficial effects of the utility model are as follows:
The utility model has reduced the usage quantity of sealing member because rear side housing, outer shell, plug are designed to integral body, improves the sealing property of equipment, alleviated the weight of jack simultaneously, improved the intensity of jack, in work progress, installed rapidly, easy to operate, improved operating efficiency.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Referring to accompanying drawing, three-in-one whole feedthrough jack, include oil-feed cylinder 1, oil return cylinder 2, piston 3, comprise that also to cover three be one cylinder body 4, rear fender 5, punching tube 7, be linked as three-in-one whole outer shell with four interior hexagonal screw threads by outer shell, plug and rear end, the oil-feed cylinder is provided with inlet nozzle 8 outward, and the oil return cylinder is provided with oil return nozzle 9 outward; Be provided with sealing front end cover 10 between the outer wall of piston and the outer inside wall of cylinder.
Claims (2)
1. three-in-one whole feedthrough jack, include front end cover, rear fender, piston, cylinder body, punching tube, it is characterized in that: it is one that the outer shell of traditional feedthrough jack, plug, three parts of rear side housing are closed three, constitute whole outer shell, be provided with stepped hole behind the described whole outer shell, cooperate with rear fender outer wall, punching tube.
2. according to the described three-in-one whole feedthrough jack of claim 1, it is characterized in that: be provided with the sealing front end cover between the outer wall of described piston and the inboard wall of cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200289920U CN201890739U (en) | 2011-01-28 | 2011-01-28 | Three-in-one integrated centre-hole jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200289920U CN201890739U (en) | 2011-01-28 | 2011-01-28 | Three-in-one integrated centre-hole jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201890739U true CN201890739U (en) | 2011-07-06 |
Family
ID=44220215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200289920U Expired - Fee Related CN201890739U (en) | 2011-01-28 | 2011-01-28 | Three-in-one integrated centre-hole jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201890739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422676A (en) * | 2013-07-30 | 2013-12-04 | 中煤科工集团西安研究院 | Device for evenly tensioning anchor cable |
-
2011
- 2011-01-28 CN CN2011200289920U patent/CN201890739U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422676A (en) * | 2013-07-30 | 2013-12-04 | 中煤科工集团西安研究院 | Device for evenly tensioning anchor cable |
| CN103422676B (en) * | 2013-07-30 | 2016-01-20 | 中煤科工集团西安研究院有限公司 | The even tensioning equipment of anchor cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20170128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |