CN204475190U - A kind of low retraction ground tackle tensioning equipment - Google Patents
A kind of low retraction ground tackle tensioning equipment Download PDFInfo
- Publication number
- CN204475190U CN204475190U CN201520093866.1U CN201520093866U CN204475190U CN 204475190 U CN204475190 U CN 204475190U CN 201520093866 U CN201520093866 U CN 201520093866U CN 204475190 U CN204475190 U CN 204475190U
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- CN
- China
- Prior art keywords
- screw thread
- nut
- ground tackle
- drive sleeve
- pull bar
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- 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.)
- Withdrawn - After Issue
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a kind of low retraction ground tackle tensioning equipment, comprise retraction support, centre-hole jack, pull bar, drive sleeve, attaching nut, ground tackle, hold-down nut, backing plate and spanner; Ground tackle comprises anchor ring and holding nut; One end of pull bar is provided with spacing screw thread, and the other end is provided with the first stretch-draw screw thread; Be provided with the second stretch-draw screw thread in the hole of attaching nut one end, the second stretch-draw screw thread matches with described first stretch-draw screw thread, the company's of being provided with anchor screw thread in the hole of the other end of attaching nut, and attaching nut is connected with the anchor ring on described ground tackle by connecting anchor screw thread; Drive sleeve passes described drag link sleeve on described attaching nut; Retraction support casing is in described drive sleeve; Centre-hole jack one end is connected with retraction support, and the other end carries out axial constraint by hold-down nut and the backing plate between hold-down nut and centre-hole jack.The utility model can make the anchoring operation of low retraction ground tackle become more convenient and safety, increases work efficiency.
Description
Technical field
The utility model relates to the technical field of anchoring, particularly the technical field of low retraction ground tackle tensioning equipment.
Background technology
Along with the progress of bridge technology, the application of large-span concrete makes pontic span increasing, this wherein has benefited from the raising of concrete strength, namely by wearing prestressed strand in concrete, pressure is applied to concrete, counteract concrete part tension working load, make concrete intensity improve several times.But occurred in the Prestressed Concrete Bridges of building in early days a lot of beam body cracking, under the bad phenomenon such as to disturb, one of its Causing Factors is that loss of prestress is comparatively large, and this brings danger to the safety operating of bridge.
Prestressed strand is the crucial primary structure member in prestressed bridge girder construction, and loss of prestress has a strong impact on the use safety of bridge, so the prestressed maintenance of steel bundle is very important, so the value of low retraction ground tackle is embodied.But when adopting low retraction ground tackle to carry out prestressed stretch-draw, owing to not having the instrument of standard to operate low retraction ground tackle, make the operation of low retraction ground tackle bring inconvenience, simultaneously owing to not having the instrument of standard, operational security also can not be guaranteed.
Summary of the invention
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of low retraction ground tackle tensioning equipment, the anchoring operation of low retraction ground tackle can be made to become more convenient and safety, increase work efficiency.
For achieving the above object, the utility model proposes a kind of low retraction ground tackle tensioning equipment, comprise retraction support, centre-hole jack, pull bar, drive sleeve, attaching nut, ground tackle, hold-down nut, backing plate and spanner; Described ground tackle comprises anchor ring and holding nut, and described anchor ring is connected by screw thread with described holding nut, described holding nut is provided with the pincers cave of circumference uniform distribution; Described pull bar is for long bar-shaped, and one end of described pull bar is provided with spacing screw thread, and the other end is provided with the first stretch-draw screw thread; The second stretch-draw screw thread is provided with in the hole of described attaching nut one end, described second stretch-draw screw thread matches with described first stretch-draw screw thread, the company's of being provided with anchor screw thread in the hole of the other end of described attaching nut, described attaching nut is connected with the anchor ring on described ground tackle by connecting anchor screw thread; Described drive sleeve passes described drag link sleeve on described attaching nut; Described retraction support is axially across described pull bar and be enclosed within described drive sleeve; Described centre-hole jack is through described pull bar, one end is connected with retraction support, the other end carries out axial constraint by hold-down nut and the backing plate between hold-down nut and centre-hole jack, and described hold-down nut is connected with described pull bar by spacing screw thread.
As preferably, described drive sleeve is provided with circumferentially uniform force hole, described spanner inserts described force hole and can rotate drive sleeve; Described drive sleeve is also provided with chela, and described chela matches with the pincers cave on described holding nut.
As preferably, described telescope support is provided with two symmetrical operation windows, the force hole described drive sleeve can be seen from outside through described operation window.
The beneficial effects of the utility model: the utility model is coordinated with the holding nut of ground tackle by the chela in drive sleeve, and by spanner insertion force hole, drive sleeve is rotated, can after centre-hole jack to carry out two times tensioning to ground tackle, convenient, safe being rotated on supporting surface by the holding nut on ground tackle supports anchor ring.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the overall structure figure of a kind of low retraction ground tackle tensioning equipment of the utility model;
Fig. 2 is the explosive view of a kind of low retraction ground tackle tensioning equipment of the utility model;
Fig. 3 is the structural representation of pull bar in the utility model;
Fig. 4 is the main pseudosection of attaching nut in the utility model;
Fig. 5 is the structural representation of ground tackle in the utility model;
Fig. 6 is the structural representation of drive sleeve in the utility model.
In figure: 1-hold-down nut, 2-centre-hole jack, 3-retraction support, 4-ground tackle, 5-pull bar, 6-backing plate, 7-attaching nut, 8-drive sleeve, 9-steel bundle, 10-spanner, 31-operation window, 41-anchor ring, 42-holding nut, 43-pincers cave, the spacing screw thread of 51-, 52-first stretch-draw screw thread, 71-second stretch-draw screw thread, 72-connect anchor screw thread, 81-force hole, 82-chela.
[detailed description of the invention]
Consult Fig. 1 ~ Fig. 6, the utility model, comprise retraction support 3, centre-hole jack 2, pull bar 5, drive sleeve 8, attaching nut 7, ground tackle 4, hold-down nut 1, backing plate 6 and spanner 10; Described ground tackle 4 comprises anchor ring 41 and holding nut 42, and described anchor ring 41 is connected by screw thread with described holding nut 42, described holding nut 42 is provided with the pincers cave 43 of circumference uniform distribution; Described pull bar 5 is for long bar-shaped, and one end of described pull bar 5 is provided with spacing screw thread 51, and the other end is provided with the first stretch-draw screw thread 52; The second stretch-draw screw thread 71 is provided with in the hole of described attaching nut 7 one end, described second stretch-draw screw thread 71 matches with described first stretch-draw screw thread 52, the company's of being provided with anchor screw thread 72 in the hole of the other end of described attaching nut 7, described attaching nut 7 is connected with the anchor ring 41 on described ground tackle 4 by connecting anchor screw thread 72; Described drive sleeve 8 is enclosed within described attaching nut 7 through described pull bar 5; Described retraction support 3 is axially across described pull bar 5 and be enclosed within described drive sleeve; Described centre-hole jack 2 is through described pull bar 5, one end is connected with retraction support 3, the other end carries out axial constraint by hold-down nut 1 and the backing plate between hold-down nut 1 and centre-hole jack 26, and described hold-down nut 1 is connected with described pull bar 5 by spacing screw thread 51.Described drive sleeve 8 is provided with circumferentially uniform force hole 81, and described spanner 10 inserts described force hole 81 and can rotate drive sleeve 8; Described drive sleeve 8 is also provided with chela 82, and described chela 82 matches with the pincers cave 43 on described holding nut 42.Described retraction support 3 is provided with two symmetrical operation windows 31, the force hole 81 described drive sleeve 8 can be seen from outside through described operation window 31.
Utility model works process:
A kind of low retraction ground tackle tensioning equipment of the utility model in the course of the work, steel bundle 9 is by ground tackle 4 fixed clamp, ground tackle 4 is retrained with pull bar 5 axial restraint by attaching nut 7, after starting stretch-draw, concrete is withstood in retraction support 3 one end, and the other end withstands centre-hole jack 2, centre-hole jack 2 pairs of backing plates 6 and hold-down nut 1 apply end thrust, make hold-down nut 1 pull pull bar 5, thus pull ground tackle 4 and steel bundle 9, complete stretch-draw work; After stretch-draw completes, spanner 10 is inserted in the force hole 81 in drive sleeve 8, axis along drive sleeve 8 rotates in a circumferential direction, chela 82 in drive sleeve 8 drives holding nut 42 to rotate near concrete direction, compensate the stretch-draw displacement play of ground tackle 4, position before making anchor ring 41 can not retract to stretch-draw again, completes stretch-draw steady job.
The utility model, coordinated with the holding nut of ground tackle by the chela in drive sleeve, and by spanner insertion force hole, drive sleeve is rotated, can after centre-hole jack to carry out two times tensioning to ground tackle, convenient, safe being rotated on supporting surface by the holding nut on ground tackle supports anchor ring.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, anyly all belongs to protection domain of the present utility model to the scheme after the utility model simple transformation.
Claims (3)
1. a low retraction ground tackle tensioning equipment, is characterized in that: comprise retraction support (3), centre-hole jack (2), pull bar (5), drive sleeve (8), attaching nut (7), ground tackle (4), hold-down nut (1), backing plate (6) and spanner (10); Described ground tackle (4) comprises anchor ring (41) and holding nut (42), and described anchor ring (41) is connected by screw thread with described holding nut (42), described holding nut (42) is provided with the pincers cave (43) of circumference uniform distribution; Described pull bar (5) is for long bar-shaped, and one end of described pull bar (5) is provided with spacing screw thread (51), and the other end is provided with the first stretch-draw screw thread (52); The second stretch-draw screw thread (71) is provided with in the hole of described attaching nut (7) one end, described second stretch-draw screw thread (71) matches with described first stretch-draw screw thread (52), the company's of being provided with anchor screw thread (72) in the hole of the other end of described attaching nut (7), described attaching nut (7) is connected with the anchor ring (41) on described ground tackle (4) by connecting anchor screw thread (72); Described drive sleeve (8) is enclosed within described attaching nut (7) through described pull bar (5); Described retraction support (3) is axially across described pull bar (5) and be enclosed within described drive sleeve; Described centre-hole jack (2) is through described pull bar (5), one end is connected with retraction support (3), the other end carries out axial constraint by hold-down nut (1) and the backing plate (6) be positioned between hold-down nut (1) and centre-hole jack (2), and described hold-down nut (1) is connected with described pull bar (5) by spacing screw thread (51).
2. low retraction ground tackle tensioning equipment as claimed in claim 1, it is characterized in that: described drive sleeve (8) is provided with circumferentially uniform force hole (81), described spanner (10) inserts described force hole (81) and can rotate drive sleeve (8); Described drive sleeve (8) is also provided with chela (82), described chela (82) matches with the pincers cave (43) on described holding nut (42).
3. low retraction ground tackle tensioning equipment as claimed in claim 1, it is characterized in that: described retraction support (3) is provided with two symmetrical operation windows (31), the force hole (81) described drive sleeve (8) can be seen from outside through described operation window (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093866.1U CN204475190U (en) | 2015-02-10 | 2015-02-10 | A kind of low retraction ground tackle tensioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093866.1U CN204475190U (en) | 2015-02-10 | 2015-02-10 | A kind of low retraction ground tackle tensioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204475190U true CN204475190U (en) | 2015-07-15 |
Family
ID=53630993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520093866.1U Withdrawn - After Issue CN204475190U (en) | 2015-02-10 | 2015-02-10 | A kind of low retraction ground tackle tensioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204475190U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239511A (en) * | 2015-09-09 | 2016-01-13 | 重庆工商职业学院 | Steel strand tension device |
| CN105986548A (en) * | 2015-02-10 | 2016-10-05 | 杭州富锚机械有限公司 | Tensioning device and method of low-retraction anchor |
| CN113652965A (en) * | 2021-06-23 | 2021-11-16 | 中铁建工集团山东有限公司 | Stay cable space positioning tensioning construction system and tensioning construction method |
-
2015
- 2015-02-10 CN CN201520093866.1U patent/CN204475190U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986548A (en) * | 2015-02-10 | 2016-10-05 | 杭州富锚机械有限公司 | Tensioning device and method of low-retraction anchor |
| CN105986548B (en) * | 2015-02-10 | 2018-02-13 | 杭州富锚机械有限公司 | A kind of low retraction anchorage tensioning equipment and method for stretching |
| CN105239511A (en) * | 2015-09-09 | 2016-01-13 | 重庆工商职业学院 | Steel strand tension device |
| CN105239511B (en) * | 2015-09-09 | 2017-02-22 | 重庆工商职业学院 | Steel strand tension device |
| CN113652965A (en) * | 2021-06-23 | 2021-11-16 | 中铁建工集团山东有限公司 | Stay cable space positioning tensioning construction system and tensioning construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150715 Effective date of abandoning: 20180213 |
|
| AV01 | Patent right actively abandoned |