CN2455694Y - Pre-stressed anti-rotary jack - Google Patents
Pre-stressed anti-rotary jack Download PDFInfo
- Publication number
- CN2455694Y CN2455694Y CN 00268548 CN00268548U CN2455694Y CN 2455694 Y CN2455694 Y CN 2455694Y CN 00268548 CN00268548 CN 00268548 CN 00268548 U CN00268548 U CN 00268548U CN 2455694 Y CN2455694 Y CN 2455694Y
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- China
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- intermediate plate
- anchor ring
- cover
- model
- utility
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- Expired - Fee Related
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Abstract
The utility model relates to a prestressed anti-rotation front clamping type jack, which is composed of an oil supplying device, a hydraulic tensioning device, a top pressure device and a tool anchor. The utility model is provided with an anti-rotation device, a thrust bearing is arranged between a rotary sleeve and a feed-through sleeve of the anti-rotation device, the rotary sleeve is fixedly connected with a tool anchor ring, the tool anchor ring is in clearance fit with the feed-through sleeve, and a clamping sheet, a top sleeve of the clamping sheet and a spring of the clamping sheet are successively arranged in the tool anchor ring. Compared with the old jack, the utility model has the advantages that the profit is increased by about 30 %, carding is not used in engineering, the labor intensity is reduced, the labor efficiency is improved, equipment is stably and reliably operated, and repair and maintenance times are reduced. The utility model can apply pre-stress to steel strands of different types.
Description
The utility model relates to civil engineering, the design and fabrication technology of the jack in the pre-stress construction.
The jack of using in the existing civil engineering pre-stress construction is made of feed apparatus, hydraulic tensioning device, top pressing device and moveable anchor, inner casing in the feed apparatus is that the instrument anchor ring screw thread in punching cover and the moveable anchor is fixed as one, during work, steel strand are under the clamping of moveable anchor, stretch, because steel strand are harvested by inevitable pine in the process that stretches, pine is harvested and just forces the rotation of instrument anchor ring, the instrument anchor ring forces the rotation of punching cover again, make whole jack rotation, make stretch-draw one less important to newly unclogging and readjusting once, otherwise can't carry out next root stretch-draw.If it does not rotate artificial control, piston, piston rod also are to rotate, inside exists in rotation process, high pressure about 39Mpa, usually accelerate the damage of seal ring, can not satisfy the production demand better, its rotation of artificial power operated control also must cause thread looseness between punching cover and the instrument anchor ring, thereby produce clamping incessantly, produce and run useful event.
The purpose of this utility model provides and a kind ofly can prevent effectively that whole jack from rotating in stretching process, cassette jack before the prestress anti-rotation that prolong tool life.
The purpose of this utility model is to realize like this, constitute by feed apparatus, hydraulic tensioning device, top pressing device and moveable anchor, it is characterized in that: anti-rotation device is arranged, adorn thrust baring between the turning set of anti-rotation device and the punching cover, turning set is captiveed joint with the instrument anchor ring, instrument anchor ring and punching cover gap cooperate, and are followed successively by intermediate plate, intermediate plate top cover and intermediate plate spring in the instrument anchor ring.
The utility model has the advantages that: rational in infrastructure, be easy to make, easy to use.The prestress engineering construction is a key popularized project, and jack is indispensable equipment in pre-stress construction.Using the pre-allowance of this jack tension end is: 200～250mm, and old-fashioned jack allowance is: 800～850mm, steel strand of stretch-draw can be saved 0.6 meter steel strand like this, approximately increase by 30% than old-fashioned jack profit.Need not unclog and readjust in the engineering, reduce labour intensity, raise labour efficiency.The number of times that equipment performance is stable, reliable, minimizing is keeped in repair, safeguarded also reduces maintenance cost greatly.High in technological content, can apply prestress to the steel strand of different model.Being suitable for the demand of present civil engineering development, is renewal product.
Below in conjunction with drawings and Examples the utility model is elaborated.
Figure is the utility model structural representation.
This jack is made of feed apparatus, hydraulic tensioning device, top pressing device and moveable anchor, and the A of feed apparatus, B two oil are chewed 5,13 and linked to each other with outer cylinder body 10; The hydraulic tensioning device is dress stretch-draw piston 8 and a piston rod 9 between outer cylinder body 10 and the punching cover 4, dress wear-resistant sleeve 7 and seal ring 6 on the piston rod; The housing 16 of piston rod and top pressing device is fixed as one, and is top pressure spring 17, roof pressure cover 18 and captive nut 19 in the top pressing device housing; Moveable anchor is made of instrument anchor ring 15, intermediate plate 14, intermediate plate top cover 11 and intermediate plate spring 12; Dress thrust baring 3 between the turning set 1 of anti-rotation device and the punching cover 4, termination plate washer 2 location, turning set is captiveed joint with instrument anchor ring 15, and instrument anchor ring 15 and punching are overlapped 4 free-running fits, is followed successively by intermediate plate 14, intermediate plate top cover 11 and intermediate plate spring 12 in the instrument anchor ring 15.Adopt the common machine process technology just can produce.During work, when A oil was chewed fuel feeding, piston rod moved right, when the about 10mm of miles of relative movement, intermediate plate is under the effect of intermediate plate spring, clamp steel strand, when the piston rod power that continues to move right required, and this moment since the mobile phase of piston rod jack integral body is moved to the left, harvest about steel strand self have to, this moment, moveable anchor and anti-rotation device began to rotate under the effect of piston rod, and other device does not change.After finishing a stressing sequence, B oil is chewed the beginning fuel feeding, and A oil is chewed oil return, and piston rod is moved to the left, and top pressing device housing pine snap ring pushes away intermediate plate and is moved to the left when moving on to original position, and the pine card is finished a job procedure.
Claims (1)
- Cassette jack before the prestress anti-rotation is made of feed apparatus, hydraulic tensioning device, top pressing device and moveable anchor, and the A of feed apparatus, B two oil are chewed [5], [13] link to each other with outer cylinder body [10]; The hydraulic tensioning device is dress stretch-draw piston [8] and a piston rod [9] between outer cylinder body [10] and the punching cover [4], adorns wear-resistant sleeve [7] and seal ring [6] on the piston rod; The housing of piston rod and top pressing device [16] is fixed as one, and is top pressure spring [17], roof pressure cover [18] and captive nut [19] in the top pressing device housing; Moveable anchor is made of instrument anchor ring [15], intermediate plate [14], intermediate plate top cover [11] and intermediate plate spring [12]; It is characterized in that: adorn thrust baring [3] between turning set of anti-rotation device [1] and the punching cover [4], termination plate washer [2] location, turning set is captiveed joint with instrument anchor ring [15], instrument anchor ring [15] and punching cover [4] free-running fit are followed successively by intermediate plate [14], intermediate plate top cover [11] and intermediate plate spring [12] in the instrument anchor ring [15].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00268548 CN2455694Y (en) | 2000-12-30 | 2000-12-30 | Pre-stressed anti-rotary jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00268548 CN2455694Y (en) | 2000-12-30 | 2000-12-30 | Pre-stressed anti-rotary jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2455694Y true CN2455694Y (en) | 2001-10-24 |
Family
ID=33622131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00268548 Expired - Fee Related CN2455694Y (en) | 2000-12-30 | 2000-12-30 | Pre-stressed anti-rotary jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2455694Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337911A (en) * | 2011-08-31 | 2012-02-01 | 泰安科大洛赛尔传感技术有限公司 | Hydraulic front-clamp type anchor cable tensioning machine tool and operating method thereof |
| CN103889662A (en) * | 2011-10-17 | 2014-06-25 | 原子能和替代能源专员署 | Asymmetrical anti-rotation device and screw jack comprising such a device |
| CN104163387A (en) * | 2013-05-16 | 2014-11-26 | 吕洪伟 | Prestress tensioning jack |
-
2000
- 2000-12-30 CN CN 00268548 patent/CN2455694Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337911A (en) * | 2011-08-31 | 2012-02-01 | 泰安科大洛赛尔传感技术有限公司 | Hydraulic front-clamp type anchor cable tensioning machine tool and operating method thereof |
| CN103889662A (en) * | 2011-10-17 | 2014-06-25 | 原子能和替代能源专员署 | Asymmetrical anti-rotation device and screw jack comprising such a device |
| CN104163387A (en) * | 2013-05-16 | 2014-11-26 | 吕洪伟 | Prestress tensioning jack |
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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 |