CN203392785U - Pre-stressed tensioning jack - Google Patents
Pre-stressed tensioning jack Download PDFInfo
- Publication number
- CN203392785U CN203392785U CN201320266477.5U CN201320266477U CN203392785U CN 203392785 U CN203392785 U CN 203392785U CN 201320266477 U CN201320266477 U CN 201320266477U CN 203392785 U CN203392785 U CN 203392785U
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- anchor
- ring
- threaded connection
- device body
- pressing device
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Abstract
The utility model relates to a pre-stressed tensioning jack. The pre-stressed tensioning jack comprises a top anchor pipe, a pressing device body, a pressing spring, a top wedge ring, an anchor cup, a tool anchor, a reset spring seat, a reset spring, an inner cylinder, a middle cylinder, an outer cylinder, a right-angle connector, an oil return tube, a clamping sleeve, a positive angle connector seat, a sealing cover, a locking ring, a thread pressing cover, an oil returning port and an oil outlet. The pressing spring is horizontally arranged in the top wedge ring and abuts against the tail portion of the top anchor pipe. The top wedge ring is in threaded connection with the pressing device body. The pressing device body is in threaded connection with the middle cylinder. The reset spring seat is sleeved with the reset spring to abut against the tail portion of the tool anchor. The tool anchor is in fit connection with the anchor cup via an eight-degree inclined plane. The anchor cup is in threaded connection with the inner cylinder. The outer cylinder is buckled by the sealing cover. An inner cylinder groove is locked by the locking ring. The thread pressing cover is in threaded connection with the outer cylinder and abuts against the locking ring. The inlet part of the oil return tube is provided with the oil returning port. The oil outlet is arranged above the positive angle connector seat.
Description
Technical field
The utility model relates to a kind of specialized equipment of tension steel strand, relates 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 Ke Yu our company and market are generally used, 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 when 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, during 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, utility model people 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.
Utility model content
Prestressed stretch-draw jack of the present utility model 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 when top pressing device body front end pushes up the Anchor Cable Anchorage on steel strand.Stop control lever when 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, after middle cylinder, move, when top, carve ring top after moveable anchor, after moveable anchor anchor sheet, move and open outward, unclamp the steel strand of holding tightly, implementation tool anchor automatically move back anchor.
Accompanying drawing explanation
Fig. 1 is prestressed stretch-draw jack section-drawing of the present utility model.
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.
The specific embodiment
As shown in Figure 1, prestressed stretch-draw jack of the present utility model 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 cover upper reset springs 8 withstand 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 oil return pipe 13 entrance 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, in promotion, cylinder 10 reaches, carve ring 4 when top and leave after moveable anchor 6, and moveable anchor 6 moves forward and hold 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 when top pressing device body 2 front ends push up the Anchor Cable Anchorage on steel strand.Stop control lever when 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, when top, carve ring 4 tops after moveable anchor 6, after moveable anchor anchor sheet, move and open outward, unclamp the steel strand of holding tightly, implementation tool anchor automatically move back anchor.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (1)
1. a prestressed stretch-draw jack, comprising: top anchor tube (1), top pressing device body (2), top pressure spring (3), ring (4) is carved, anchor cup (5), moveable anchor (6) in top, 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); 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); 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320266477.5U CN203392785U (en) | 2013-05-16 | 2013-05-16 | Pre-stressed tensioning jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320266477.5U CN203392785U (en) | 2013-05-16 | 2013-05-16 | Pre-stressed tensioning jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203392785U true CN203392785U (en) | 2014-01-15 |
Family
ID=49904332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320266477.5U Expired - Lifetime CN203392785U (en) | 2013-05-16 | 2013-05-16 | Pre-stressed tensioning jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203392785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163387A (en) * | 2013-05-16 | 2014-11-26 | 吕洪伟 | Prestress tensioning jack |
| CN113529705A (en) * | 2021-07-21 | 2021-10-22 | 中国矿业大学(北京) | High-prestress nondestructive application device and method for anchor rods and anchor cables |
-
2013
- 2013-05-16 CN CN201320266477.5U patent/CN203392785U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104163387A (en) * | 2013-05-16 | 2014-11-26 | 吕洪伟 | Prestress tensioning jack |
| CN113529705A (en) * | 2021-07-21 | 2021-10-22 | 中国矿业大学(北京) | High-prestress nondestructive application device and method for anchor rods and anchor cables |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190710 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 HANHAI ZHONGJIA HYDRAULIC TOOLS CO.,LTD. Address before: 100072 No. 302, 3rd Gate, 31st Floor, Huaishuling No. 3 Hospital, Fengtai District, Beijing Patentee before: Lv Hongwei |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |