CN104163387A - Prestress tensioning jack - Google Patents
Prestress tensioning jack Download PDFInfo
- Publication number
- CN104163387A CN104163387A CN201310180866.0A CN201310180866A CN104163387A CN 104163387 A CN104163387 A CN 104163387A CN 201310180866 A CN201310180866 A CN 201310180866A CN 104163387 A CN104163387 A CN 104163387A
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- anchor
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- ring
- device body
- pressing device
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Abstract
A prestress tensioning jack comprises a jacking anchor pipe, a jacking pressing device body, a jacking pressing spring, a jacking wedge ring, an anchor cup, a tool anchor, a reset spring base, a reset spring, an inner cylinder, a middle cylinder, an outer cylinder, a right-angle joint, an oil returning pipe, a clamping sleeve, a positive-angle joint base, a sealing cover, a locking ring, a thread gland, a cylinder returning oil opening and a cylinder output oil opening. The jacking pressing spring lies in the jacking wedge ring, and jacks the tail portion of the jacking anchor pipe, the jacking wedge ring is connected with the jacking pressing device body through threads, the jacking pressing device body is connected with the middle cylinder through threads, the reset spring base is sleeved with the reset spring which jacks the tail of the tool anchor, and the tool anchor is wedged with the anchor cup through an eight-degree slope. The anchor cup is connected with the inner cylinder through threads, and the outer cylinder is fastened by the sealing cover. An inner cylinder groove is locked by the locking ring, the thread gland is connected with the outer cylinder through threads and tightly jacks the locking ring, the cylinder returning oil opening is formed in an inlet of the oil returning pipe, and the cylinder output oil opening is formed above the positive-angle joint base.
Description
Technical field
The present invention relates to a kind of specialized equipment of tension steel strand, relate in particular to a kind of prestressed stretch-draw jack.
Background technology
Prestressed stretch-draw jack is the specialized equipment of tension steel strand.By the moveable anchor of its internal configurations, can realize automatic anchoring and automatically move back anchor.The SDB series hand oil pump that product can generally use with our company and market, KZDB, STDB series extra-high pressure electric oil pump, the pneumatic oil pump of FDB series supports the use, and is a kind of commonality, compatible all good prestressed stretch-draw specialized equipments.Can be widely used in anchor cable prestressed stretch-draw, the Mine anchorage cable supporting fields such as railway, highway, bridge, building, colliery, tunnel.
The type prestressed stretch-draw jack of the tension steel strand that existing market is used can substantially meet user's requirement in the time of construction operation.But the prestressed stretch-draw jack same, market is used, weight is all between 30～40Kg.In construction operation process, due to need of work, when direct labor, often to want flush end and face upward act facility, the weight of 30～40Kg has caused very large inconvenience and burden to the workman of production line, and they are bearing labour intensity greatly.
In order to solve the problems of the technologies described above, contriver reduces the labour intensity of coal miner by every means, has redesigned a kind of prestressed stretch-draw jack, have good mechanical characteristics, workability is good, is easy to processing, resistance to abrasion is good, the advantages such as corrosion resistance, good in oxidation resistance.
By improvement, our product design is alleviated more than 50%, and can reduce the traffic cost of product.The labour intensity that greatly reduces workman on the basis of guaranteeing safety and product design, has improved production efficiency.Use 7075 t6 aluminum alloys to replace the heaviest parts such as outer shell and middle cylinder and top pressing device of YCD prestressed stretch-draw jack.7075 t6 aluminum alloy tools have the following advantages: (1) high strength heat-treatable alloy.(2) good mechanical properties.(3) workability is good, and resistance to abrasion is good.(4) corrosion resistance, good in oxidation resistance.Use this material can replace rigid material completely.
Summary of the invention
Prestressed stretch-draw jack of the present invention comprises: top anchor tube, top pressing device body, top pressure spring, top are carved ring, anchor cup, moveable anchor, return spring holder, retracing spring, inner casing, middle cylinder, outer shell, nipple bent piece, oil return pipe, cutting ferrule, positive angle plinth, seal cover cap, lock ring, union (screwed)bonnet (UB, return cylinder hydraulic fluid port, gone out cylinder hydraulic fluid port, wherein top pressure spring crouches in ring is carved on top, withstands top anchor tube afterbody; Top is carved ring and is connected with top pressing device body by screw thread; Top pressing device body and middle cylinder are threaded connection; Return spring holder cover upper reset spring withstands moveable anchor afterbody; Moveable anchor and anchor cup are carved and are closed by 8 ° of inclined-planes; Anchor cup is threaded connection inner casing; Seal cover cap fastens outer shell; Lock ring pins inner casing groove; Union (screwed)bonnet (UB is threaded connection outer shell and holds out against lock ring, and the entrance of oil return pipe arranges back cylinder hydraulic fluid port, and positive angle plinth top is provided with out cylinder hydraulic fluid port.
While carrying out stretch-draw: hydraulic oil enters by going out cylinder hydraulic fluid port, cylinder reach in promotion, carves ring when top and leaves after moveable anchor, and moveable anchor moves forward and hold tightly steel strand under the effect of retracing spring.Along with entering of hydraulic oil, middle cylinder constantly moves forward, and starts tension steel strand in the time that top pressing device body front end pushes up the Anchor Cable Anchorage on steel strand.Stop control lever in the time that predetermined load is arrived in stretch-draw, load is constant, and now top anchor tube, by the intermediate plate jacking anchor ring in Anchor Cable Anchorage under the effect of top pressure spring, is realized the anchoring of Anchor Cable Anchorage and steel strand.
While exiting stretch-draw: hydraulic oil enters by returning cylinder hydraulic fluid port, moves after middle cylinder, carves ring top after moveable anchor when top, moves and opens outward after moveable anchor anchor sheet, unclamps the steel strand of holding tightly, implementation tool anchor automatically move back anchor.
Preferably, use the manufactured materials of 7075 t6 aluminum alloys as outer shell (11) and middle cylinder (10) and top pressing device body (2).
Brief description of the drawings
Fig. 1 is prestressed stretch-draw jack section-drawing of the present invention.
1-top anchor tube; 2-top pressing device body; 3-top pressure spring; 4-carves ring in top; 5-anchor cup; 6-moveable anchor; 7-return spring holder; 8-retracing spring; 9-inner casing; Cylinder in 10-; 11-outer shell; 12-nipple bent piece; 13-oil return pipe; 14-cutting ferrule; 15-positive angle plinth; 16-seal cover cap; 17-lock ring; 18-union (screwed)bonnet (UB; 19-returns cylinder hydraulic fluid port; 20-goes out cylinder hydraulic fluid port.
Detailed description of the invention
As shown in Figure 1, prestressed stretch-draw jack of the present invention comprises: top anchor tube 1, top pressing device body 2, top pressure spring 3, top are carved ring 4, anchor cup 5, moveable anchor 6, return spring holder 7, retracing spring 8, inner casing 9, middle cylinder 10, outer shell 11, nipple bent piece 12, oil return pipe 13, cutting ferrule 14, positive angle plinth 15, seal cover cap 16, lock ring 17, union (screwed)bonnet (UB 18, return cylinder hydraulic fluid port 19, gone out cylinder hydraulic fluid port 20, wherein top pressure spring 3 crouches in ring 4 is carved on top, withstands top anchor tube 1 afterbody; Top is carved ring 4 and is connected with top pressing device body 2 by screw thread; Top pressing device body 2 is threaded connection with middle cylinder 10; Return spring holder 7 overlaps upper reset spring 8 and withstands moveable anchor 6 afterbodys; Moveable anchor 6 is carved and is closed by 8 ° of inclined-planes with anchor cup 5; Anchor cup 5 is threaded connection inner casing 9; Seal cover cap 16 fastens outer shell 11; Lock ring 17 pins inner casing 9 grooves; Union (screwed)bonnet (UB 18 is threaded connection outer shell and holds out against lock ring 17, and the entrance of oil return pipe 13 arranges back cylinder hydraulic fluid port, and positive angle plinth 15 tops are provided with out cylinder hydraulic fluid port.
While carrying out stretch-draw: hydraulic oil enters by going out cylinder hydraulic fluid port 20, and in promotion, cylinder 10 moves forward, carve ring 4 leave after moveable anchor 6 when top, moveable anchor 6 moves forward and holds tightly steel strand under the effect of retracing spring 8.Along with entering of hydraulic oil, middle cylinder 10 constantly moves forward, and starts tension steel strand in the time that top pressing device body 2 front ends push up the Anchor Cable Anchorage on steel strand.Stop control lever in the time that predetermined load is arrived in stretch-draw, load is constant, and now top anchor tube 1, by the intermediate plate jacking anchor ring in Anchor Cable Anchorage under the effect of top pressure spring, is realized the anchoring of Anchor Cable Anchorage and steel strand.
While exiting stretch-draw: hydraulic oil enters by returning cylinder hydraulic fluid port 19, after middle cylinder 10, move, carve ring 4 tops to after moveable anchor 6 when top, after moveable anchor anchor sheet, move and open outward, unclamp the steel strand of holding tightly, implementation tool anchor automatically move back anchor.
Use the manufactured materials of 7075 t6 aluminum alloys as outer shell (11) and middle cylinder (10) and top pressing device body (2).
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (6)
1. a prestressed stretch-draw jack, comprise: top anchor tube (1), top pressing device body (2), top pressure spring (3), ring (4) is carved on top, anchor cup (5), moveable anchor (6), return spring holder (7), retracing spring (8), inner casing (9), middle cylinder (10), outer shell (11), nipple bent piece (12), oil return pipe (13), cutting ferrule (14), positive angle plinth (15), seal cover cap (16), lock ring (17), union (screwed)bonnet (UB (18), return cylinder hydraulic fluid port (19), go out cylinder hydraulic fluid port (20).
2. prestressed stretch-draw jack as claimed in claim 1, is characterized in that top pressure spring (3) crouches in ring (4) is carved on top, withstands top anchor tube (1) afterbody; Top is carved ring (4) and is connected with top pressing device body (2) by screw thread; Top pressing device body (2) is threaded connection with middle cylinder (10); Return spring holder (7) cover upper reset spring (8) withstands moveable anchor (6) afterbody; Moveable anchor (6) is carved and is closed by 8 ° of inclined-planes with anchor cup (5); Anchor cup (5) is threaded connection inner casing (9); Seal cover cap (16) fastens outer shell (11); Lock ring (17) pins inner casing (9) groove; Union (screwed)bonnet (UB (18) is threaded connection outer shell and holds out against lock ring (17).
3. prestressed stretch-draw jack as claimed in claim 2, is characterized in that the entrance of oil return pipe (13) arranges back cylinder hydraulic fluid port, and positive angle plinth (15) top is provided with out cylinder hydraulic fluid port.
4. prestressed stretch-draw jack as claimed in claim 3, it is characterized in that, while carrying out stretch-draw: hydraulic oil enters by going out cylinder hydraulic fluid port (20), cylinder in promotion (10) reach, carving ring (4) when top leaves after moveable anchor (6), moveable anchor (6) moves forward and holds tightly steel strand under the effect of retracing spring (8), along with entering of hydraulic oil, middle cylinder (10) constantly moves forward, in the time that pushing up the Anchor Cable Anchorage on steel strand, top pressing device body (2) front end starts tension steel strand, stop control lever in the time that predetermined load is arrived in stretch-draw, load is constant, now top anchor tube (1) under the effect of top pressure spring by the intermediate plate jacking anchor ring in Anchor Cable Anchorage, realize the anchoring of Anchor Cable Anchorage and steel strand.
5. prestressed stretch-draw jack as claimed in claim 4, it is characterized in that, while exiting stretch-draw: hydraulic oil enters by returning cylinder hydraulic fluid port (19), middle cylinder moves after (10), when ring (4) top is carved after moveable anchor (6) in top, after moveable anchor anchor sheet, move and open outward, unclamping the steel strand of holding tightly, implementation tool anchor automatically move back anchor.
6. prestressed stretch-draw jack as claimed in claim 1, is characterized in that using the manufactured materials of 7075 t6 aluminum alloys as outer shell (11) and middle cylinder (10) and top pressing device body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310180866.0A CN104163387B (en) | 2013-05-16 | 2013-05-16 | Prestressed stretch-draw jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310180866.0A CN104163387B (en) | 2013-05-16 | 2013-05-16 | Prestressed stretch-draw jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104163387A true CN104163387A (en) | 2014-11-26 |
| CN104163387B CN104163387B (en) | 2018-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310180866.0A Active CN104163387B (en) | 2013-05-16 | 2013-05-16 | Prestressed stretch-draw jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104163387B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860226A (en) * | 2015-04-27 | 2015-08-26 | 同济大学 | Prestress tensioning jack equipment with adjustable limiting device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2235436Y (en) * | 1995-12-18 | 1996-09-18 | 吕文炎 | Multi-function hydraulic jack for pushing or drawing |
| JPH0913672A (en) * | 1995-07-04 | 1997-01-14 | P S Co Ltd | Frp tensional material, its fixing method and fixing tool |
| JPH11256827A (en) * | 1998-03-13 | 1999-09-21 | Sanwa Giken:Kk | Re-tensioning method of anchor and re-tensioning jig |
| CN2455694Y (en) * | 2000-12-30 | 2001-10-24 | 焦金太 | Pre-stressed anti-rotary jack |
| CN2547714Y (en) * | 2002-05-28 | 2003-04-30 | 奉化市南方机械制造有限公司 | Dual-pump oil jack |
| CN203392785U (en) * | 2013-05-16 | 2014-01-15 | 吕洪伟 | Pre-stressed tensioning jack |
-
2013
- 2013-05-16 CN CN201310180866.0A patent/CN104163387B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0913672A (en) * | 1995-07-04 | 1997-01-14 | P S Co Ltd | Frp tensional material, its fixing method and fixing tool |
| CN2235436Y (en) * | 1995-12-18 | 1996-09-18 | 吕文炎 | Multi-function hydraulic jack for pushing or drawing |
| JPH11256827A (en) * | 1998-03-13 | 1999-09-21 | Sanwa Giken:Kk | Re-tensioning method of anchor and re-tensioning jig |
| CN2455694Y (en) * | 2000-12-30 | 2001-10-24 | 焦金太 | Pre-stressed anti-rotary jack |
| CN2547714Y (en) * | 2002-05-28 | 2003-04-30 | 奉化市南方机械制造有限公司 | Dual-pump oil jack |
| CN203392785U (en) * | 2013-05-16 | 2014-01-15 | 吕洪伟 | Pre-stressed tensioning jack |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860226A (en) * | 2015-04-27 | 2015-08-26 | 同济大学 | Prestress tensioning jack equipment with adjustable limiting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104163387B (en) | 2018-02-13 |
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| PB01 | Publication | ||
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Effective date of registration: 20190730 Address after: 100072 Beijing Tongzhou District Zhongguancun Science and Technology Park Tongzhou Park Jinqiao Science and Technology Industrial Base Jingsheng South Fourth Street Jia No. 13 Building C Patentee after: Beijing Hydraulic Machinery Co. Ltd. the Hanhai Scarlett Address before: 100072 No. 302, 3rd Gate, 31st Floor, Huaishuling No. 3 Hospital, Fengtai District, Beijing Patentee before: Lv Hongwei |