CN203682979U - Anchor group front clamping type jack - Google Patents
Anchor group front clamping type jack Download PDFInfo
- Publication number
- CN203682979U CN203682979U CN201320891693.9U CN201320891693U CN203682979U CN 203682979 U CN203682979 U CN 203682979U CN 201320891693 U CN201320891693 U CN 201320891693U CN 203682979 U CN203682979 U CN 203682979U
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- China
- Prior art keywords
- piston
- cylinder body
- anchor ring
- steel strand
- hole
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- Expired - Fee Related
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Abstract
The utility model discloses an anchor group front clamping type jack which comprises a cylinder body with a step-shaped through hole, a piston is arranged in the cylinder body in a sliding mode, a through hole is formed in the center of the piston, an inner anchor ring is arranged in the through hole, the end of the inner anchor ring is flush with the end of the piston rod, the outer wall of the cylinder body is provided with an oil inlet and an oil outlet, an end cover is arranged between the cylinder body and the tail of the piston, a cushion plate, a limit plate and an outer anchor ring are sequentially arranged at the front end of the cylinder body, the cylinder body further comprises a steel strand which sequentially penetrates through the outer anchor ring, the limit plate and the cushion plate, and clamping sheets are arranged between the outer anchor ring, the inner anchor ring and the steel strand. According to the anchor group front clamping type jack, a large quantity of steel strands can be saved, in the tensioning process, the tool anchor is near the limit plate, when oil is returned by the jack, the clamping sheets can come out along with the steel strand, so that labor strength is reduced, and working efficiency is improved. The slippery screw phenomenon caused by breakage of the steel strand due to the fact that the steel strand is intersected in the jack is completely avoided. During work, the piston moves outwards, and displacement of the piston is conveniently measured.
Description
technical field:
The utility model relates to jack process technology, relates in particular to the front clip type jack of a population anchor.
background technology:
Front clip type jack is a kind of multiduty prestress tensioning equipment, easy to operate.Be mainly used in single hole stretch-draw.Can be used for again porous pretension, stretch-draw and troubleshooting, and can be applicable to high strength steel tow and the steel strand of plurality of specifications size.Prestress is one of indispensable important tool in the construction of prestress engineering stretch-draw anchor.Any jack is not omnipotent.Jack structure, scantling of structure and tension tonnage define its range of use.
Group's anchor refers to anchor rings more than two holes.Work anchor is exactly not reproducible use, the directly disposable Liang Tishang that stays, and moveable anchor is a kind of instrument can repeated usage is for stretch-draw as instrument time.
In original front clip type jack structure, there is certain defect: steel strand use amount is large, causes waste; Relatively far apart, easily there is fracture of wire and cause ground tackle stripped thread phenomenon in steel strand for moveable anchor and positioning plate, and when jack oil return, intermediate plate is difficult for taking out, and has improved labour intensity; Displacement measurement inconvenience.
utility model content:
In order to make up prior art problem, the purpose of this utility model is to provide the front clip type jack of a population anchor, and reasonable in design, has saved steel strand, and steel strand are not prone to fracture of wire linearity, and displacement measurement is convenient and swift, practical.
The technical solution of the utility model is as follows:
Clip type jack before group's anchor, comprise the cylinder body with stepped appearance through hole, it is characterized in that: in described cylinder body, be slidably fitted with piston, piston center is provided with through hole, in through hole, be provided with interior anchor ring, interior anchor ring end is concordant with the end of piston, the outer wall of cylinder body is provided with oil inlet and return opening, between cylinder body and piston tail, be provided with end cap, the front end of cylinder body is provided with backing plate successively, positioning plate, outer anchor ring, also include steel strand, steel strand are successively through described outer anchor ring, positioning plate, backing plate, described outer anchor ring, interior anchor ring and steel strand between be provided with intermediate plate.
Clip type jack before described group's anchor, it is characterized in that: described piston is provided with annular boss with the ladder table top place of matching of inboard wall of cylinder block, between the ladder table top of the front end face of boss and inboard wall of cylinder block, be provided with circular clearance, circular clearance is connected with described oil inlet, between the inwall of the aft end face of boss and described end cap, cylinder body, form and hold cavity, hold cavity and be connected with described return opening near end cap one side.
Clip type jack before described group's anchor, is characterized in that: described interior anchor ring, outer anchor ring center are equipped with the through wires hole running through for steel strand, the end of through wires hole is the taper hole of installing for intermediate plate.
Clip type jack before described group's anchor, is characterized in that: described positioning plate central steel twisted wire perforation periphery is provided with groove, and the bottom land of groove withstands described intermediate plate end.
Clip type jack before described group's anchor, is characterized in that: between described inboard wall of cylinder block and end cap outer wall, inboard wall of cylinder block and piston outer wall, piston outer wall and end cap inwall, be equipped with seal ring.
The utility model has the advantages that:
1, the utility model adopts front cassette, be that moveable anchor is preposition, steel strand length in reserve is that 250 millimeters (containing usable lengths of work ground tackle, positioning plate) get final product stretch-draw, more common centre-hole jack can be saved the steel strand of 550 millimeters long, and the utility model is the jack that steel strand are saved in current use procedure most;
2, in stretching process, to be separated by closelyer due to moveable anchor and positioning plate, when jack oil return, intermediate plate can be with steel strand together out, thereby reduce labour intensity, improved work efficiency;
3, because moveable anchor and work ground tackle are separated by closelyer, avoided causing steel strand fracture of wire to cause ground tackle stripped thread phenomenon because of steel strand in jack internal chiasma completely;
4, when the utility model is worked, piston is outside movement, than before the displacement of the more convenient measurement piston in front card top.
accompanying drawing explanation:
Fig. 1 is structural representation of the present utility model.
the specific embodiment:
Referring to accompanying drawing:
Clip type jack before group's anchor, comprise the cylinder body 1 with stepped appearance through hole, in cylinder body 1, be slidably fitted with piston 2, piston 2 centers are provided with through hole, in through hole, be provided with interior anchor ring 3, interior anchor ring 3 ends are concordant with the end of piston 2, the outer wall of cylinder body 1 is provided with oil inlet 4 and return opening 5, between cylinder body 1 and piston 2 afterbodys, be provided with end cap 6, the front end of cylinder body 1 is provided with backing plate 7 successively, positioning plate 8, outer anchor ring 9, also include steel strand 10, steel strand 10 are successively through outer anchor ring 9, positioning plate 8, backing plate 7, outer anchor ring 9, interior anchor ring 3 and steel strand 10 between be provided with the intermediate plate 11 of taper.
Piston 2 is provided with annular boss 12 with the ladder table top place of matching of cylinder body 1 inwall, between the ladder table top of the front end face of boss 12 and inboard wall of cylinder block, be provided with circular clearance 13, circular clearance 13 is connected with oil inlet 4, between the inwall of the aft end face of boss 12 and end cap 6, cylinder body 1, form and hold cavity 14, hold cavity 14 and be connected with return opening 5 near end cap 6 one sides.
Positioning plate 8 central steel twisted wire perforation peripheries are provided with groove 17, and the bottom land of groove 17 withstands intermediate plate 11 ends.
Between cylinder body 1 inwall and end cap 6 outer walls, cylinder body 1 inwall and piston 2 outer walls, piston 2 outer walls and end cap 6 inwalls, be equipped with seal ring 18.
The utility model adopts the version of ordinary jack " cylinder body is static, piston activity ", has the performance of continuous follow-up, repeat stretch-draw.In stretching process, jack cylinder body forms not kinetoplast, and piston, moveable anchor form movable body, and when movable body is not in the time that kinetoplast outwards moves, moveable anchor, intermediate plate clamping steel strand carry out stretch-draw.In the time reaching required stress and strain value, movable body resets, work clip sheet, the automatic anchoring of work anchor, and now intermediate plate is no longer subject to External Force Acting.At determining under power effect of steel strand, tool clamping piece, in company with outwards mobile disengaging instrument anchor hole of steel strand, completes stretching process.
The utility model is mainly formed by combining by cylinder body 1, piston 2, end cap 6, sealing member (seal ring) 18, and this is simple in structure, and installation, maintenance is convenient, from oil inlet 4 oil-feeds, piston outwards moves, and closes inlet valve, open fuel-return valve, return opening 6 oil-feeds, piston moves back.
Claims (5)
1. clip type jack before a population anchor, comprise the cylinder body with stepped appearance through hole, it is characterized in that: in described cylinder body, be slidably fitted with piston, piston center is provided with through hole, in through hole, be provided with interior anchor ring, interior anchor ring end is concordant with the end of piston, the outer wall of cylinder body is provided with oil inlet and return opening, between cylinder body and piston tail, be provided with end cap, the front end of cylinder body is provided with backing plate successively, positioning plate, outer anchor ring, also include steel strand, steel strand are successively through described outer anchor ring, positioning plate, backing plate, described outer anchor ring, interior anchor ring and steel strand between be provided with intermediate plate.
2. clip type jack before according to claim 1 group of anchors, it is characterized in that: described piston is provided with annular boss with the ladder table top place of matching of inboard wall of cylinder block, between the ladder table top of the front end face of boss and inboard wall of cylinder block, be provided with circular clearance, circular clearance is connected with described oil inlet, between the inwall of the aft end face of boss and described end cap, cylinder body, form and hold cavity, hold cavity and be connected with described return opening near end cap one side.
3. clip type jack before according to claim 1 group of anchors, is characterized in that: described interior anchor ring, outer anchor ring center are equipped with the through wires hole running through for steel strand, the end of through wires hole is the taper hole of installing for intermediate plate.
4. clip type jack before according to claim 1 group of anchors, is characterized in that: described positioning plate central steel twisted wire perforation periphery is provided with groove, and the bottom land of groove withstands described intermediate plate end.
5. clip type jack before according to claim 1 group of anchors, is characterized in that: between described inboard wall of cylinder block and end cap outer wall, inboard wall of cylinder block and piston outer wall, piston outer wall and end cap inwall, be equipped with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891693.9U CN203682979U (en) | 2013-12-31 | 2013-12-31 | Anchor group front clamping type jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891693.9U CN203682979U (en) | 2013-12-31 | 2013-12-31 | Anchor group front clamping type jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203682979U true CN203682979U (en) | 2014-07-02 |
Family
ID=51004913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320891693.9U Expired - Fee Related CN203682979U (en) | 2013-12-31 | 2013-12-31 | Anchor group front clamping type jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203682979U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105502200A (en) * | 2016-01-18 | 2016-04-20 | 柳州泰姆预应力机械有限公司 | Intelligent front-clamping jack capable of facilitating construction and easy to install and maintain |
| CN104649180B (en) * | 2014-06-24 | 2017-07-04 | 柳州市威尔姆预应力有限公司 | Inner blocking type stretch-draw jack and its construction method |
| CN107269007A (en) * | 2017-06-11 | 2017-10-20 | 桂林理工大学 | A kind of unbonded prestressing tendon method for stretching for being easy to move back anchor |
| CN107700848A (en) * | 2017-09-13 | 2018-02-16 | 核工业西南勘察设计研究院有限公司 | A kind of stopping means for reducing prestressd anchor cable loss |
| CN108193883A (en) * | 2018-01-08 | 2018-06-22 | 中交三公局第工程有限公司 | Flat hogging moment steel strand wires jack |
-
2013
- 2013-12-31 CN CN201320891693.9U patent/CN203682979U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104649180B (en) * | 2014-06-24 | 2017-07-04 | 柳州市威尔姆预应力有限公司 | Inner blocking type stretch-draw jack and its construction method |
| CN105502200A (en) * | 2016-01-18 | 2016-04-20 | 柳州泰姆预应力机械有限公司 | Intelligent front-clamping jack capable of facilitating construction and easy to install and maintain |
| CN107269007A (en) * | 2017-06-11 | 2017-10-20 | 桂林理工大学 | A kind of unbonded prestressing tendon method for stretching for being easy to move back anchor |
| CN107269007B (en) * | 2017-06-11 | 2023-08-11 | 桂林理工大学 | Unbonded prestressed reinforcement tensioning method convenient for anchor withdrawal |
| CN107700848A (en) * | 2017-09-13 | 2018-02-16 | 核工业西南勘察设计研究院有限公司 | A kind of stopping means for reducing prestressd anchor cable loss |
| CN108193883A (en) * | 2018-01-08 | 2018-06-22 | 中交三公局第工程有限公司 | Flat hogging moment steel strand wires jack |
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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: 20140702 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |