CN202787077U - Sleeve rod connection type pull bar jack tensioning system - Google Patents
Sleeve rod connection type pull bar jack tensioning system Download PDFInfo
- Publication number
- CN202787077U CN202787077U CN2012201298315U CN201220129831U CN202787077U CN 202787077 U CN202787077 U CN 202787077U CN 2012201298315 U CN2012201298315 U CN 2012201298315U CN 201220129831 U CN201220129831 U CN 201220129831U CN 202787077 U CN202787077 U CN 202787077U
- Authority
- CN
- China
- Prior art keywords
- pull bar
- anchor head
- jack
- strand
- reaction frame
- Prior art date
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a sleeve rod connection type pull bar jack tensioning system, which is suitable for a narrow tensioning space and a long-extending distance, and relates to the technical field of bridge engineering construction. The sleeve rod connection type pull bar jack tensioning system comprises a cable strand anchor head, a fixed reaction frame, a thin type cross-core jack, an anchoring nut, a steel anchor case and a pull bar device. The steel anchor case, the fixed reaction frame, and a fixed metope at the rear end of the reaction frame form a set and fixed extending boundary for the cable strand anchor head. Through controlling a top extending stroke of the thin type cross-core jack, rotating the sleeve rod or the pull bar, adjusting or shortening the length of the pull bar device, and increasing or reducing the filling number of stopping cushion blocks, the cable strand anchor head can be extended to a position required by the design. The sleeve rod connection type pull bar jack tensioning system is advantageous in that the operation is convenient; the structure is simple; cost investment is low; economic effect is good.
Description
Technical field
The utility model relates to the Bridge Construction technical field, refers to particularly a kind of loop bar connecting type pull rod jack tension system that is applicable to narrow stretch-draw space, long stretching distance.
Background technology
Along with the development of Bridges in Our Country cause, large-scale anchor plate anchor system begins to be applied to the main rope of suspension bridge anchor structure.Strand anchor head and steel anchor box in the anchor plate system are separate, do not have an effect, steel anchor box and fixing reaction frame, and fixedly the fixedly metope of reaction frame rear end forms the strand anchor head stretch border condition that can't change of setting jointly, fixing reaction frame and fixedly the fixedly metope distance of reaction frame rear end is very near, therefore the anchor plate systems face the outstanding problem in " narrow stretch-draw space; long stretching distance ", the stroke of the jack in the common merogenesis extension type pull bar system generally only has 5cm, and the stretching distance of actual strand anchor head is often larger, so after a jack range, fill with cushion block in the space that strand anchor head and steel anchor box need to be spared, prevent strand anchor head reset (because Shu Li still very large), after cushion block is filled in, loosen again jack, the strand anchor head just can not reset because of the Shu Li of an other end, in such cases, the pull bar space is just because of the mobile and corresponding minimizing in steel anchor box of strand anchor head, namely pull bar needs constantly to move outside steel anchor box in stretching process, realizes that pull bar moves back bar.This just requires the steel anchor box outside to have the larger bar space of moving back.Under the construction environment of narrow space, be difficult to guarantee that pull bar moves back the stretch-draw space that bar needs, this condition restriction the application of anchor plate system in the bridge cause.
The utility model content
The purpose of this utility model is exactly the deficiency for the above-mentioned background technical description, design the construction requirement that a kind of long distance that can satisfy the main cable strand end stretches, need not again in narrow and small stretch-draw space, to move back bar, be not subjected to the loop bar connecting type pull rod jack tension system of the restriction in stretch-draw space.
The technical solution of the utility model is: a kind of loop bar connecting type pull rod jack tension system, comprise the strand anchor head, fixing reaction frame, the punching jack, anchoring nut and steel anchor box, described strand anchor head is located in the steel anchor box, described anchoring nut is arranged on the top of punching jack and lifts on the part, the punching jack is located at fixedly on the reaction frame, fixedly reaction frame fixedly is located on the steel anchor box, it is characterized in that: also comprise draw rod device, described draw rod device comprises at least two pull bars, connected by loop bar between the pull bar, loop bar is hollow structure, and an end of draw rod device is connected with strand anchor head one end, and the other end of draw rod device and anchoring nut are threaded connection.
Further, the other end of described strand anchor head is connected with strand.
Further, described strand anchor head and strand link are provided with cushion block.
Preferably, the threaded one end of described strand anchor head is connected with connector, and connector is connected with draw rod device by internal thread.
Preferably, be threaded between described loop bar and the pull bar.
The method for stretching of a kind of loop bar connecting type pull rod jack tension system, it is that strand is connected with the strand anchor head other end, after a pull bar in the punching jack clamping draw rod device is implemented stretch-draw one segment distance, be provided with the cushion block of retaining at strand anchor head and strand link, rotation loop bar or pull bar are regulated the length that shortens draw rod device, unclamp the punching jack, after the punching jack resets, after again a pull bar in the punching jack clamping draw rod device being implemented stretch-draw one segment distance, be provided with the cushion block of retaining at strand anchor head and strand link, rotation loop bar or pull bar are regulated the length that shortens draw rod device, unclamp the punching jack, after the punching jack resetted, the above-mentioned jack tension that again circulates resetted until strand stretch-draw is put in place.
Further, each stretch-draw distance of described punching jack is a stroke of punching jack.
In the utility model, can need regulate the hollow length in the loop bar at the stretching distance of steel anchor box according to the strand anchor head, perhaps increase/reduce the quantity of loop bar and pull bar.
Steel anchor box in the utility model and fixedly reaction frame, and fixedly the fixedly metope of reaction frame rear end jointly form the strand anchor head stretch border condition that can't change of setting, stretch the filling quantity that stroke, rotation loop bar or pull bar are regulated length and the increase of shortening draw rod device or reduced the retaining cushion block by controlling slim punching jack top, can make the strand anchor head be stretched to the design position, easy to operate, simple in structure, cost that can be lower drops into, and obtains good economic benefit.
Description of drawings
Fig. 1 is the utility model original state structural representation.
Fig. 2 is the utility model working state schematic representation.
Among the figure: 1-strand anchor head, the 2-connector, the solid pull bar of 3-, the 4-hollow draw-bar, the solid pull bar of 5-, the 6-hollow draw-bar, the solid pull bar of 7-, 8-is reaction frame fixedly, the conventional slim punching jack of 9-, 10-anchoring nut, 11-steel anchor box, 12-backing plate.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, is convenient to be well understood to the utility model, but they do not consist of restriction to the utility model.
A kind of loop bar connecting type pull rod jack tension system as shown in Figure 1 comprises strand anchor head 1, connector 2, fixedly reaction frame 8, slim punching jack 9, anchoring nut 10, steel anchor box 11 and draw rod device.Strand anchor head 1 is relatively independent structure with steel anchor box 11, can in steel anchor box 11, vertically move, be anchored under its original state on the termination plate washer of steel anchor box 11, and be connected with strand, connector 2 is connected by the two ends of external screw thread with strand anchor head 1, connector 2 is connected with draw rod device by internal thread, draw rod device is by solid pull bar 3, solid pull bar 5, solid pull bar 7, hollow draw-bar 4, hollow draw-bar 6 consists of, hollow draw-bar 4 in the present embodiment and hollow draw-bar 6 are exactly the loop bar in the technical solution of the present invention, one end and the connector 2 of solid pull bar 3 are threaded connection, the other end of solid pull bar 3 is connected with hollow draw-bar 4 by screw thread with an end of solid pull bar 5, the other end of solid pull bar 5 is connected by hollow draw-bar 6 with an end of solid pull bar 7, the inside of hollow draw-bar 4 and hollow draw-bar 6 is provided with the hollow distance that length is L, the other end of solid pull bar 7 is connected with anchoring nut 10 by screw thread, anchoring nut 10 is arranged on the top of slim punching jack 9 and lifts on the part, slim punching jack 9 is located at fixedly reaction frame 8 rear ends, and fixedly reaction frame 8 is fixedly installed on the steel anchor box 11.
Steel anchor box 11 in the present embodiment and fixing reaction frame 8, and fixedly the fixedly metope of reaction frame 8 rear ends jointly form the strand anchor head stretch border condition that can't change of setting.
The specific works principle is: install each member by Fig. 1, form the original state of strand anchor head 1 tension strand, then, start slim punching jack 9, moved by the anchoring nut 10 drive draw rod device and the strand anchor head 1 that arrange on the slim punching jack 9, until slim punching jack 9 moves to range; Top and 1 of strand anchor head at steel anchor box 11 inserts backing plate 12 subsequently.Subsequently slim punching jack 9 oil returns, draw rod device is lax.Turn the pull bar in the draw rod device, hollow draw-bar 4 and the hollow distance of hollow draw-bar 6 inside are dwindled, namely shortened the length of draw rod device; Draw rod device is recovered tensioning state, can realize the continuation stretch-draw of slim punching jack; Again start slim punching jack 9, enter next jack top and stretch stroke, repeat aforesaid operations, until strand anchor head 1 is stretched to design attitude, to finish the stretch function of strand anchor head 1, concrete effect as shown in Figure 2.This draw rod device can be in the situation of not adjusting pull bar quantity, the distance of stretching strand anchor head 2L0.
In addition, according to the stretching distance of strand anchor head 1 at steel anchor box 11, can suitably regulate the hollow distance of hollow draw-bar inside, the pull bar quantity in increase or the minimizing draw rod device satisfies the stretching demand of strand anchor head 1.
Claims (5)
1. loop bar connecting type pull rod jack tension system, comprise strand anchor head (1), fixing reaction frame (8), punching jack (9), anchoring nut (10) and steel anchor box (11), described strand anchor head (1) is located in the steel anchor box (11), described anchoring nut (10) is arranged on the top of punching jack (9) and lifts on the part, punching jack (9) is located at fixedly on the reaction frame (8), fixedly reaction frame (8) fixedly is located on the steel anchor box (11), it is characterized in that: also comprise draw rod device, described draw rod device comprises at least two pull bars, connected by loop bar between the pull bar, loop bar is hollow structure, one end of draw rod device is connected with strand anchor head (1) one end, and the other end of draw rod device and anchoring nut (10) are threaded connection.
2. loop bar connecting type pull rod jack tension according to claim 1 system, it is characterized in that: strand anchor head (1) other end is connected with strand.
3. a kind of loop bar connecting type pull rod jack tension according to claim 1 and 2 system, it is characterized in that: strand anchor head (1) is provided with cushion block with the link of strand.
4. loop bar connecting type pull rod jack tension according to claim 1 system, it is characterized in that: the threaded one end of described strand anchor head (1) is connected with connector (2), and connector (2) is connected with draw rod device by internal thread.
5. loop bar connecting type pull rod jack tension according to claim 1 system is characterized in that: be threaded between described loop bar and the pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201298315U CN202787077U (en) | 2012-03-30 | 2012-03-30 | Sleeve rod connection type pull bar jack tensioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201298315U CN202787077U (en) | 2012-03-30 | 2012-03-30 | Sleeve rod connection type pull bar jack tensioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202787077U true CN202787077U (en) | 2013-03-13 |
Family
ID=47814359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201298315U Expired - Lifetime CN202787077U (en) | 2012-03-30 | 2012-03-30 | Sleeve rod connection type pull bar jack tensioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202787077U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619171A (en) * | 2012-03-30 | 2012-08-01 | 中交二航局第四工程有限公司 | Loop bar connection type draw bar jack tension system |
| CN103358366A (en) * | 2013-07-30 | 2013-10-23 | 苏州香山工坊营造工程有限公司 | Laminated plate laminwood processing auxiliary tool |
| CN111119489A (en) * | 2019-12-24 | 2020-05-08 | 巨力索具股份有限公司 | Method for tensioning stay cable |
-
2012
- 2012-03-30 CN CN2012201298315U patent/CN202787077U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619171A (en) * | 2012-03-30 | 2012-08-01 | 中交二航局第四工程有限公司 | Loop bar connection type draw bar jack tension system |
| CN103358366A (en) * | 2013-07-30 | 2013-10-23 | 苏州香山工坊营造工程有限公司 | Laminated plate laminwood processing auxiliary tool |
| CN111119489A (en) * | 2019-12-24 | 2020-05-08 | 巨力索具股份有限公司 | Method for tensioning stay cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202787077U (en) | Sleeve rod connection type pull bar jack tensioning system | |
| CN104477734A (en) | Tensioning device and tensioning method for steel wire rope of ultra-deep vertical shaft cage guide | |
| CN205934747U (en) | A hang basket that is used for cantilever to pour bridge construction operation with pre -compaction structure | |
| CN102619171B (en) | Loop bar connection type draw bar jack tension system and tension method therof | |
| CN104404886B (en) | Two rope composite damping rope | |
| CN102352600A (en) | Spherical hinge-type vertical inhibiting device for bridge | |
| CN104594206A (en) | Suspended type dragging anchor socket and method for steel trussed beam longitudinal displacement | |
| CN201738246U (en) | Ground loading and pressing device for continuous beam suspended bracket | |
| CN202990100U (en) | Car frame stabilizing device of stereo garage | |
| CN203269457U (en) | Steel strand pre-tightening device | |
| CN203021881U (en) | Adjustable guide rail for underground coal mine crane | |
| CN103866691B (en) | A kind of Large scale cable crane track cable group anchor device | |
| CN201180255Y (en) | Cord clip spanning apparatus of thread twining machine | |
| CN201907879U (en) | Automatic take-up device for water tank | |
| CN203782567U (en) | Bearing cable anchor group device of large cable crane | |
| CN204266130U (en) | Two rope composite damping rope | |
| CN203961069U (en) | Self-locking reinforced aluminum plate curtain wall system | |
| CN102085578A (en) | Breakage processing lathe | |
| CN206721686U (en) | A kind of force transmission rack structure for tensioning on the board-like anchorage beam face of suspension rod ears | |
| CN207608224U (en) | A kind of bridge beam slab handling supporting support | |
| CN211849010U (en) | Bridge deck crack reinforcing apparatus | |
| CN203782586U (en) | Suspension cable device for bridge construction | |
| CN201891080U (en) | Auxiliary cable saddle for cable hanging construction for spatial cable suspension bridge | |
| CN215482250U (en) | Device for mounting bridge with anchor bolt leg support | |
| CN204920238U (en) | Prestressing force carbon fiber plate's straining means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20140312 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20140312 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |