CN203755163U - Steel strand tension tool of united span cast-in-situ simply-supported box girder - Google Patents
Steel strand tension tool of united span cast-in-situ simply-supported box girder Download PDFInfo
- Publication number
- CN203755163U CN203755163U CN201320871354.4U CN201320871354U CN203755163U CN 203755163 U CN203755163 U CN 203755163U CN 201320871354 U CN201320871354 U CN 201320871354U CN 203755163 U CN203755163 U CN 203755163U
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- China
- Prior art keywords
- steel strand
- frock
- pulley
- strand tension
- supported box
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Abstract
The utility model belongs to the technical field of bridge construction, and provides a steel strand tension tool of a united span cast-in-situ simply-supported box girder. The provided steel strand tension tool of the united span cast-in-situ simply-supported box girder is arranged on the top face of a box girder (13) of a required steel strand, and comprises a tool framework (5), a pulley assembly (1), a chain block (3) and a tensioning jack (6), wherein one end of a top plate (20) of the tool framework (5) extends out of the tool framework, and is provided with a slideway (2) and the pulley assembly (1) thereon; the pulley assembly (1) comprises an upper pulley (18), a lower pulley (19) and a pulley support (21); the upper pulley (18) and the lower pulley (19) are fixed on the pulley support (21); the upper pulley (18) is arranged in a chute of the slideway (2); the chain block (3) is connected with the lower pulley (19) and the tensioning jack (6) through a steel wire rope (4). By applying the steel strand tension tool of the united span cast-in-situ simply-supported box girder, the installation and construction of a tensioning jack in a smaller tension space are realized.
Description
Technical field
The utility model belongs to technical field of bridge construction, is specifically related to a kind of steel strand tension frock across cast-in-place simple supported box beam.
Background technology
Bridge main will be divided into: case beam, T-shaped beam, plank beams, arch form bridge and steel structure bridge etc.; Case beam is divided into again: Cast-in-Situ Continuous Beam, prefabricated simple supported box beam and the cast-in-place simple supported box beam etc. of setting up, connection across cast-in-place simple supported box beam be continuous 2 across and 2 across above cast-in-place simple supported box beam combination.
Connection is installed and tensioning process across the steel strand of cast-in-place simple supported box beam: bellows → installation anchor plate → steel hinge line lashing → installation ground tackle, jack → stretch-draw → hole path pressure grouting → sealing off and covering anchorage are installed; The technique that ground tackle, jack are wherein installed has comprised again inspection work → installation work anchor → installation work anchor clamp → mounting limit plate → installation jack → erecting tools anchor → erecting tools anchoring clamping piece of tensioner.
Connection only has 0.96 meter across the spacing between adjacent two the case beams of cast-in-place simple supported box beam, that is to say that case beam beam-ends steel strand tension space only has 0.96 meter, and the stretch-draw difficulty of steel strand is larger; In the time of in-situ beam casting in the past, beam-ends steel strand tension is all to set up stretch-draw jack installing rack at the beam-ends of case beam, but only has the connection of the spacing of 0.96 meter cannot set up stretch-draw jack installing rack across cast-in-place simply supported beam for stretch-draw space.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to propose
oneplant the steel strand tension frock of connection across cast-in-place simple supported box beam.
The utility model adopts following technical scheme for completing above-mentioned purpose:
Across a steel strand tension frock for cast-in-place simple supported box beam, described steel strand tension frock is arranged on the case top surface of the beam of required tension steel strand; Described steel strand tension frock includes frock skeleton, pulley assembly, Chain block and stretch-draw jack; Described frock skeleton is the tower structure with top board and base plate, and in described frock skeleton, balancing weight is set; Frock skeleton is stretched out in one end of the described top board of frock skeleton, and slideway and pulley assembly are set thereon; One end of described slideway is fixed on the top board of frock skeleton, and the other end stretches out the top board of frock skeleton; Described pulley assembly includes top sheave, lower sheave and pulley bracket; Described top sheave, lower sheave is all fixed on described pulley bracket, and described top sheave is arranged in the chute of slideway; Described lower sheave is connected with Chain block by wire rope; Described stretch-draw jack is connected with Chain block by wire rope.
The utility model proposes
oneplant the steel strand tension frock of connection across cast-in-place simple supported box beam, adopt technique scheme, can meet the installation of drawing stretch-draw jack in space compared with Xiao Zhang, complete the stretch-draw work of steel strand in little space, and the utility model can be reused, thereby reduced construction cost, and have simple in structure, the feature of convenient operation.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enlarged drawing of A part in Fig. 1.
Fig. 3 is the position view of top board and slideway in the utility model, pulley.
Fig. 4 is use state diagram of the present utility model.
In figure: 1, pulley assembly; 2, slideway; 3, Chain block; 4, wire rope; 5, frock skeleton; 6, stretch-draw jack; 7, balancing weight; 8, wheel; 9, moveable anchor; 10 ground tackles; 11, work anchor and intermediate plate; 12, steel strand; 13, case beam; 14, bearing; 15, pinner; 16, bridge pier; 17, beam seam center line, 18, top sheave, 19, lower sheave, 20, top board, 21, pulley bracket.
Detailed description of the invention
With specific embodiment, the utility model is illustrated by reference to the accompanying drawings:
As shown in Figure 1, a kind of steel strand tension frock across cast-in-place simple supported box beam, described steel strand tension frock is arranged on the end face of the case beam 13 of required tension steel strand; Described steel strand tension frock includes frock skeleton 5, pulley assembly 1, Chain block and stretch-draw jack 6; Described frock skeleton 5 is the tower structure with top board 20 and base plate, and at the interior balancing weight 7 that arranges of described frock skeleton 5; In this embodiment, described frock skeleton adopts ∠ 70*70*5mm angle steel to make, and adopts ∠ 70*70*5mm angle steel and the thick stainless steel iron sheet of 0.5mm to bind, and adopts ∠ 70*70*5mm angle steel and 3mm steel plate back cover; In conjunction with Fig. 4, frock skeleton is stretched out in one end of the described top board 20 of frock skeleton 5, and slideway 2 and pulley assembly 1 are set thereon; One end of described slideway 2 is fixed on the top board 20 of frock skeleton, and the other end stretches out the top board 20 of frock skeleton; In conjunction with Fig. 2, described pulley assembly 1 includes top sheave 18, lower sheave 19 and pulley bracket 21; Described top sheave 18, lower sheave 19 is all fixed on described pulley bracket 21, and described top sheave 18 is arranged in the chute of slideway 2; Described lower sheave 19 is connected with Chain block 3 by wire rope 4; Described stretch-draw jack 6 is connected with Chain block 3 by wire rope 4; In the time that steel strand tension frock needs integrated moving position, can along slideway 2, stretch-draw jack 6 be moved in frock by top sheave 18, facilitate it to move; In the time that steel strand tension frock need to be worked, can along slideway, stretch-draw jack be moved to by top sheave 18 to the top in gap between adjacent two case beams, position apart from the beam-ends 20cm of the case beam of required tension steel strand; The structure of stretch-draw jack 6 is comparatively ripe and more at present, the model that adopts Kaifeng Zhong Yu stressing equipment Co., Ltd to produce in this embodiment: the centre-hole jack of YDC3500; On described frock skeleton 5 base plates, there is the wheel 8 that facilitates steel strand tension frock to move.
As shown in Figure 4, concrete operation step of the present utility model is:
1, connection is across the assembled step of cast-in-place simple supported box beam steel strand tension frock: and frock skeleton is assembled → and that self-locking wheel → the arrange slideway of counterweight → installation jack for moving, the Chain block of pulley → installation jack lifting → wire rope is connected with Chain block → jack and wire rope are connected → complete frock are installed is assembled.
2, assembled good frock is displaced to cast-in-place simple supported box beam end face, locking wheel; Along slideway, stretch-draw jack is moved to the top in gap between adjacent two case beams, position apart from the beam-ends 20cm of the case beam of required tension steel strand by top sheave 18; Only have the spacing installation Simple crawling ladder of 0.96 meter to meet manual operation in stretch-draw space, steel strand are reserved according to 700mm length, guarantee to only have in stretch-draw space the spacing of 0.96 meter can complete smoothly stretch-draw; By lower sheave 19, stretch-draw jack is moved up and down, then installation work anchor and fixture, limiting plate, by centre-hole jack squint, then slowly passes centre-hole jack by steel strand, and erecting tools anchor and intermediate plate, complete the installation of stretch-draw jack.
Claims (1)
1. connection, across a steel strand tension frock for cast-in-place simple supported box beam, is characterized in that: described steel strand tension frock is arranged on the end face of the case beam (11) of required tension steel strand; Described steel strand tension frock includes frock skeleton (5), pulley assembly (1), Chain block (3) and stretch-draw jack (6); Described frock skeleton (5) is the tower structure with top board (20) and base plate, and balancing weight (7) is set in described frock skeleton (5); Frock skeleton is stretched out in one end of the described top board (20) of frock skeleton (5), and slideway (2) and pulley assembly (1) are set thereon; One end of described slideway (2) is fixed on the top board (20) of frock skeleton, and the other end stretches out the top board (20) of frock skeleton; Described pulley assembly (1) includes top sheave (18), lower sheave (19) and pulley bracket (21); It is upper that described top sheave (18), lower sheave (19) is all fixed on described pulley bracket (21), and described top sheave (18) is arranged in the chute of slideway (2); Described lower sheave (19) is connected with Chain block (3) by wire rope (4); Described stretch-draw jack (6) is connected with Chain block (3) by wire rope (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871354.4U CN203755163U (en) | 2013-12-27 | 2013-12-27 | Steel strand tension tool of united span cast-in-situ simply-supported box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871354.4U CN203755163U (en) | 2013-12-27 | 2013-12-27 | Steel strand tension tool of united span cast-in-situ simply-supported box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203755163U true CN203755163U (en) | 2014-08-06 |
Family
ID=51250460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320871354.4U Expired - Fee Related CN203755163U (en) | 2013-12-27 | 2013-12-27 | Steel strand tension tool of united span cast-in-situ simply-supported box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203755163U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463994A (en) * | 2015-12-23 | 2016-04-06 | 中国三冶集团有限公司 | Prestress tensioning jack movement device and prestress box girder structure tensioning method |
| CN107237264A (en) * | 2017-06-15 | 2017-10-10 | 中铁十四局集团有限公司 | A kind of the second stage of prestress wire tensioning support of Precast T-Beam and method |
-
2013
- 2013-12-27 CN CN201320871354.4U patent/CN203755163U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463994A (en) * | 2015-12-23 | 2016-04-06 | 中国三冶集团有限公司 | Prestress tensioning jack movement device and prestress box girder structure tensioning method |
| CN105463994B (en) * | 2015-12-23 | 2017-05-17 | 中国三冶集团有限公司 | Prestress tensioning jack movement device and prestress box girder structure tensioning method |
| CN107237264A (en) * | 2017-06-15 | 2017-10-10 | 中铁十四局集团有限公司 | A kind of the second stage of prestress wire tensioning support of Precast T-Beam and method |
| CN107237264B (en) * | 2017-06-15 | 2019-12-27 | 中铁十四局集团有限公司 | Prefabricated T-beam secondary-stage prestress steel strand tensioning support and method |
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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: 20140806 Termination date: 20201227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |