CN102268857B - Low-retracting secondary stretch-draw anchorage supporting nut screwing device - Google Patents

Low-retracting secondary stretch-draw anchorage supporting nut screwing device Download PDF

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Publication number
CN102268857B
CN102268857B CN 201110164763 CN201110164763A CN102268857B CN 102268857 B CN102268857 B CN 102268857B CN 201110164763 CN201110164763 CN 201110164763 CN 201110164763 A CN201110164763 A CN 201110164763A CN 102268857 B CN102268857 B CN 102268857B
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China
Prior art keywords
draw
stretch
spacer shell
supporting nut
adapter sleeve
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Expired - Fee Related
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CN 201110164763
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Chinese (zh)
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CN102268857A (en
Inventor
邵旭东
万国强
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Xiangtan European Prestressed Anchor Co Ltd
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Xiangtan European Prestressed Anchor Co Ltd
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Priority to CN 201110164763 priority Critical patent/CN102268857B/en
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Publication of CN102268857B publication Critical patent/CN102268857B/en
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Abstract

The invention discloses a low-retracting secondary stretch-draw anchorage supporting nut screwing device which mainly aims to solve the technical problems that the existing low-retracting secondary stretch-draw anchorage supporting nut is inconvenient to screw and the like. The technical scheme is as follows: the device comprises an inward-convex connection sleeve (1), a transition sleeve (2), a driven rotary wheel (3), a driving rotary wheel (4), a power machine (5) and a stretch-draw bracket (6), wherein an inner boss is designed in the inner cavity of the inward-convex connection sleeve (1), and is matched with a groove corresponding to the periphery of a secondary stretch-draw anchorage supporting nut (7); more than three grooves are arranged at the upper end of the inward-convex connection sleeve (1); more than three bosses matched with the grooves at the upper end surface of the inward-convex connection sleeve (1) are arranged on the lower end surface of the transition sleeve (2); the grooves on the upper end surface of the inward-convex connection sleeve (1) are connected with the bosses on the lower end surface of the transition sleeve (2) in clearance fit; and a rotation device is arranged on the transition sleeve (2). The device disclosed by the invention well solves the problem of screwing the low-retracting secondary stretch-draw anchorage supporting nut, and can remarkably reduce the size of the reserved grooves on the bridge deck, reduce the concrete cut section of the bridge, reduce the difficulty in operating the knob supporting nut and improve the construction efficiency. The device can be widely applied to the box girder construction engineering adopting a suspension casting construction method, particularly to the mounting of the vertical pre-stressed low-retracting secondary stretch-draw anchorage in bridge engineering.

Description

Low retracting secondary stretch-draw anchorage supporting nut screwing device
Technical field
The present invention relates to a kind of low retracting secondary stretch-draw anchorage supporting nut screwing device, particularly secondary stretch-draw anchorage supporting nut device for screwing up in groove.
Background technology
At present, the bridge engineering vertical prestressing adopts low retracting secondary stretch-draw ground tackle, and because of ground tackle, on beam top but do not allow to exceed bridge floor, low retracting secondary stretch-draw ground tackle must be arranged in the groove lower than bridge floor.When ground tackle being carried out to for the second time stretching construction, its back nut need be tightened downwards, due to it in groove, narrow space in addition, bring difficulty and inconvenience to constructing operation, manually tighten operation for meeting, the reserved groove size of bridge floor is just larger simultaneously, has caused weakening the physical dimension of bridge concrete.
Summary of the invention
The purpose of this invention is to provide a kind of convenient and simple for operationly, adapt to the low retracting secondary stretch-draw anchorage supporting nut screwing device of operation in groove.
The present invention solves the technical scheme that its technical problem takes: it comprises inner convexed adapter sleeve 1, spacer shell 2, passive swiveling wheel 3, active rotation wheel 4, engine 5 and stretch-draw support 6, be designed with inner convex platform at inner convexed adapter sleeve 1 inner chamber, its inner convex platform groove corresponding with secondary stretch-draw anchorage supporting nut 7 peripheries matches; The upper surface of inner convexed adapter sleeve 1 is provided with the groove more than 3, spacer shell 2 lower surfaces are provided with the boss matched with the groove of inner convexed adapter sleeve 1 upper surface more than 3, and the groove of inner convexed adapter sleeve 1 upper surface becomes matched in clearance to be connected with the boss of spacer shell 2 lower surfaces; On spacer shell 2, whirligig is set.The whirligig arranged on described spacer shell 2 can be rotary handle or turnbarrel; Can be also the gear rotating mechanism, spacer shell 2 upper ends be connected with passive swiveling wheel 3; Passive swiveling wheel 3 is connected with manual rotation mechanism; Or adopting the gear rotating mechanism of following form, spacer shell 2 upper ends are connected with passive swiveling wheel 3; Passive swiveling wheel 3 peripheries are provided with roller gear, active rotation is taken turns 4 peripheries and is provided with the round shape gear matched with passive swiveling wheel 3 periphery roller gears, and the roller gear of passive swiveling wheel 3 peripheries and active rotation are taken turns the 4 peripheries circle shape gears transferring power square that is meshed; Active rotation is taken turns 4 Centers has interior axis hole to be connected with keyway and with the output shaft of engine 5.
Spacer shell of the present invention 2 upper surfaces are provided with the groove more than 3, passive swiveling wheel 3 lower surfaces are provided with the boss matched with the groove of spacer shell 2 upper surfaces settings more than 3, and the groove of spacer shell 2 upper surfaces becomes interference fits with the boss of passive swiveling wheel 3 lower surfaces.Also can described passive swiveling wheel 3 is as a whole with spacer shell 2.
The inner convex platform shape of inner convexed adapter sleeve 1 of the present invention is corresponding with back nut 7 peripheral groove positions and shape is identical, and the inner convex platform size is less than groove size 0.5～5mm.Described spacer shell 2 internal diameters are greater than stretch-draw adapter sleeve 10 external diameter 0.5～15mm, spacer shell 2 lower surface boss with corresponding inner convexed adapter sleeve 1 corresponding recesses gap, upper surface between 0.3～15mm.
The invention has the beneficial effects as follows: it has solved the problem of tightening of low retracting secondary stretch-draw anchorage supporting nut preferably, can significantly reduce the reserved groove size of bridge floor simultaneously, reduce bridge concrete and cut down cross section, reduce the operation easier of turn-knob back nut, improve efficiency of construction.It can be widely used in adopting the cantilever casting construction method to carry out in the engineering of box girder construction, especially for the bridge engineering vertical prestressing, hangs down in installing and using of retracting secondary stretch-draw ground tackle.
The accompanying drawing explanation
Fig. 1 is use status architecture schematic diagram of the present invention
Fig. 2 is inner convexed connecting jacket structure schematic diagram.
Fig. 3 is the plan structure schematic diagram of Fig. 2.
Fig. 4 is the spacer shell structural representation.
Fig. 5 is the plan structure schematic diagram of Fig. 4.
Fig. 6 is passive rotating wheel structure schematic diagram.
Fig. 7 is the plan structure schematic diagram of Fig. 6.
Fig. 8 is spacer shell and passive swiveling wheel overall structure schematic diagram
Fig. 9 is the plan structure schematic diagram of Fig. 8.
In figure: 1-inner convexed adapter sleeve; The 2-spacer shell; The passive swiveling wheel of 3-; 4-active rotation wheel; The 5-engine; 6-stretch-draw support; The 7-secondary stretch-draw anchorage supporting nut; 8-two times tensioning anchor ring; The 9-backing plate; 10-stretch-draw adapter sleeve; The 11-tension rod; 12 jack; 13 attaching nuts.
The specific embodiment
Below in conjunction with embodiment, that the invention will be further described is as follows:
Embodiment 1, consult Fig. 1, the present invention consists of inner convexed adapter sleeve 1, spacer shell 2, passive swiveling wheel 3, active rotation wheel 4, engine 5 and stretch-draw support 6 etc., inner convexed adapter sleeve 1 is sleeved on secondary stretch-draw anchorage supporting nut 7, can design one or more inner convex platforms at inner convexed adapter sleeve 1 inner chamber, its inner convex platform groove corresponding with secondary stretch-draw anchorage supporting nut 7 peripheries becomes matched in clearance, be that described inner convex platform shape is corresponding with back nut 7 peripheral groove positions and shape is identical, the inner convex platform size is less than groove size 0.5～5mm.Be provided with 3 or a plurality of groove in the upper surface of inner convexed adapter sleeve 1, spacer shell 2 lower surface correspondences arrange 3 or a plurality of son boss with matching, the groove of inner convexed adapter sleeve 1 upper surface becomes matched in clearance to be connected with the boss of spacer shell 2 lower surfaces, and can make spacer shell 2 lower surface boss with corresponding inner convexed adapter sleeve 1 upper surface corresponding recesses clearance control between 0.3～15mm; And on spacer shell 2, whirligig being set, described whirligig can adopt rotary handle or turnbarrel; Spacer shell 2 is sleeved on stretch-draw adapter sleeve 10, and spacer shell 2 internal diameters should be greater than stretch-draw adapter sleeve 10 external diameter 0.5～15mm.After the two times tensioning ground tackle completes stretch-draw for the first time and puts, remove the tension tools such as jack, inner convexed adapter sleeve 1 is arranged on to secondary stretch-draw anchorage supporting nut 7 tops, after stretch-draw adapter sleeve 10 and tension rod 11 are installed, in stretch-draw adapter sleeve periphery, spacer shell 2 is installed, drive spacer shell 2 by operation rotary handle or turnbarrel again and promote 1 rotation of inner convexed adapter sleeve, inner convexed adapter sleeve 1 rotarily drives secondary stretch-draw anchorage supporting nut 7 and is rotated down, gap between two times tensioning anchor ring 8 and backing plate 9 is eliminated, and completes the anchoring operation of two times tensioning ground tackle.Consult Fig. 1 to Fig. 9.
Embodiment 2: the whirligig that the present invention arranges on spacer shell 2 can be also the gear rotating mechanism, and spacer shell 2 upper ends are connected with passive swiveling wheel 3, and passive swiveling wheel 3 is connected with manual rotation mechanism.After the two times tensioning ground tackle completes stretch-draw for the first time and puts, remove the tension tools such as jack, inner convexed adapter sleeve 1 is arranged on to secondary stretch-draw anchorage supporting nut 7 tops, after stretch-draw adapter sleeve 10 and tension rod 11 are installed, in stretch-draw adapter sleeve periphery, spacer shell 2, passive swiveling wheel 3 are installed, now, also has 7～13mm gap between two times tensioning anchor ring 8 and backing plate 9.At this moment can drive passive swiveling wheel 3 to drive spacer shell 2 promotion inner convexed adapter sleeve 1 rotations by operating manual rotating mechanism, inner convexed adapter sleeve 1 rotarily drives secondary stretch-draw anchorage supporting nut 7 and is rotated down, until secondary stretch-draw anchorage supporting nut 7 arrives and contacts plane on backing plate 9, eliminate the gap between two times tensioning anchor ring 8 and backing plate 9, complete the anchoring operation of two times tensioning ground tackle.Consult Fig. 1 to Fig. 9, all the other are with embodiment 1.
Embodiment 3: the whirligig that the present invention arranges on spacer shell 2 is except adopting above-mentioned manual operation, also can adopt actuating unit to be driven, consult Fig. 1, spacer shell 2 upper ends are connected with passive swiveling wheel 3, and in passive swiveling wheel 3 peripheries, roller gear is set, the round shape gear that the periphery setting of active rotation wheel 4 matches with passive swiveling wheel 3 periphery roller gears, the roller gear of passive swiveling wheel 3 peripheries and active rotation are taken turns 4 peripheries and are justified the shape gears transferring power square that is meshed; Active rotation is taken turns 4 Centers has interior axis hole to be connected with keyway and with the output shaft of engine 5, engine 5 can be fixed on the side of stretch-draw support 6, the shape and size of stretch-draw support 6 are similar with normal two times tensioning support, note keeping active rotation wheel 4 and passive swiveling wheel 3 gear normal occlusions.After the two times tensioning ground tackle completes stretch-draw for the first time and puts, remove the tension tools such as jack, inner convexed adapter sleeve 1 is arranged on to secondary stretch-draw anchorage supporting nut 7 tops, after stretch-draw adapter sleeve 10 and tension rod 11 are installed, in stretch-draw adapter sleeve periphery, spacer shell 2, passive swiveling wheel 3 are installed, jack 12 is installed on the stretch-draw support, with attaching nut 13, tension rod 11 and jack 12 is linked together.Start jack and complete after stretch-draw reaches designing requirement for the second time, between two times tensioning anchor ring 8 and backing plate 9,7～13mm gap occurs.When sending the anchoring instruction, engine 5 rotates drive active rotation wheel 4 and passive swiveling wheel 3 promotes protruding formula adapter sleeve 1 rotation by spacer shell 2, driving secondary stretch-draw anchorage supporting nut 7 is rotated down, until secondary stretch-draw anchorage supporting nut 7 arrives and contacts plane on backing plate 9, eliminate gap between two times tensioning anchor ring 8 and backing plate 9, engine 5 shuts down, and completes the anchoring operation of two times tensioning ground tackle.Consult Fig. 1 to Fig. 9, all the other are with above-mentioned embodiment
Embodiment 4: the present invention also can cancel spacer shell 2 upper end circumferential grooves and passive swiveling wheel 3 lower end circumference boss, and can spacer shell 2 and 3 designs of passive swiveling wheel is in aggregates.Consult Fig. 1 to Fig. 9, all the other are with above-mentioned embodiment.
Embodiment 5, and inner convexed adapter sleeve 1 inner chamber of the present invention is designed to 6 boss, its boss width 2mm, length 12mm, height 3mm, inner chamber Φ 119mm, external diameter Φ 125mm, height 35mm.Adapter sleeve 1 upper end circumference is established 12 wide 15mm, dark 8mm groove.Spacer shell 2 inner chamber Φ 119mm, external diameter Φ 126mm, the lower end circumference is established 12 wide 10mm, high 7mm boss, and the upper end circumference is established 16 wide 24mm, dark 7.5mm boss, with spacer shell 2 upper end circumferential groove interference fits.Passive swiveling wheel 3 inner chambers are Φ 119mm, and periphery is lower little large round platform, lower round platform footpath Φ 126mm, high 10mm, upper round platform external diameter Φ 132mm, high 15mm.It is the 2mm spur gear that upper round platform periphery is established modulus.Active rotation wheel 4 is made as cylindrical, external diameter Φ 80mm, and it is the 2mm spur gear that periphery is established modulus, height 20mm.If strong groove width 6mm in interior axis hole Φ 28mm axis hole, dark 3mm.Engine 5 power 15W wear and subtract machine, 15 rev/mins of output speeds, and output shaft diameter of phi 28mm, join and strong take turns 4 interior axis holes installations with active rotation and be connected, and consults Fig. 1 to Fig. 9, and all the other are with above-mentioned embodiment.

Claims (8)

1. a low retracting secondary stretch-draw anchorage supporting nut screwing device, it is characterized in that: it comprises inner convexed adapter sleeve (1), spacer shell (2), passive swiveling wheel (3), active rotation wheel (4), engine (5) and stretch-draw support (6), stretch-draw support (6) is installed on low retracting secondary stretch-draw ground tackle, engine (5) is fixed on the side of stretch-draw support (6), engine (5) rotates drive active rotation wheel (4) and passive swiveling wheel (3) promotes protruding formula adapter sleeve (1) rotation by spacer shell (2), be designed with inner convex platform at inner convexed adapter sleeve (1) inner chamber, its inner convex platform groove corresponding with secondary stretch-draw anchorage supporting nut (7) periphery matches, the upper surface of inner convexed adapter sleeve (1) is provided with the groove more than 3, spacer shell (2) lower surface is provided with the boss matched with the groove of inner convexed adapter sleeve (1) upper surface more than 3, and the groove of inner convexed adapter sleeve (1) upper surface becomes matched in clearance to be connected with the boss of spacer shell (2) lower surface, spacer shell arranges whirligig on (2).
2. low retracting secondary stretch-draw anchorage supporting nut screwing device according to claim 1 is characterized in that: the upper whirligig arranged of spacer shell (2) is rotary handle or turnbarrel.
3. low retracting secondary stretch-draw anchorage supporting nut screwing device according to claim 1 is characterized in that: the upper whirligig arranged of spacer shell (2) is the gear rotating mechanism, and spacer shell (2) upper end is connected with passive swiveling wheel (3); Passive swiveling wheel (3) is connected with manual rotation mechanism.
4. low retracting secondary stretch-draw anchorage supporting nut screwing device according to claim 1 is characterized in that: the upper whirligig arranged of spacer shell (2) is the gear rotating mechanism, and spacer shell (2) upper end is connected with passive swiveling wheel (3); Passive swiveling wheel (3) periphery is provided with roller gear, active rotation wheel (4) periphery is provided with the round shape gear matched with passive swiveling wheel (3) periphery roller gear, and the roller gear of passive swiveling wheel (3) periphery and active rotation are taken turns (4) periphery and justified the shape gear transferring power square that is meshed; Active rotation wheel (4) Center has interior axis hole to be connected with keyway and with the output shaft of engine (5).
5. low retracting secondary stretch-draw anchorage supporting nut screwing device according to claim 1, it is characterized in that: spacer shell (2) upper surface is provided with the groove more than 3, passive swiveling wheel (3) lower surface is provided with the boss matched with the groove of spacer shell (2) upper surface setting more than 3, and the groove of spacer shell (2) upper surface becomes interference fits with the boss of passive swiveling wheel (3) lower surface.
6. low retracting secondary stretch-draw anchorage supporting nut screwing device according to claim 1 is characterized in that: described passive swiveling wheel (3) is as a whole with spacer shell (2).
7. low retracting secondary stretch-draw anchorage supporting nut screwing device according to claim 1, it is characterized in that: the inner convex platform shape of described inner convexed adapter sleeve (1) is corresponding with back nut (7) peripheral groove position and shape is identical, and the inner convex platform size is less than groove size 0.5～5mm.
8. low retracting secondary stretch-draw anchorage supporting nut screwing device according to claim 1, it is characterized in that: described spacer shell (2) internal diameter is greater than stretch-draw adapter sleeve (10) external diameter 0.5～15mm, spacer shell (2) lower surface boss with corresponding recesses gap, corresponding inner convexed adapter sleeve (1) upper surface between 0.3～15mm.
CN 201110164763 2011-06-18 2011-06-18 Low-retracting secondary stretch-draw anchorage supporting nut screwing device Expired - Fee Related CN102268857B (en)

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Application Number Priority Date Filing Date Title
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104831634A (en) * 2015-05-18 2015-08-12 湖南路桥建设集团有限责任公司 Construction method for box type bridge vertical prestressed steel strand tension
CN105926445B (en) * 2016-05-04 2017-12-29 中国十九冶集团有限公司 Bridge High-pier rises outrigger overmolded retractor device certainly
CN109024278A (en) * 2018-08-14 2018-12-18 中铁大桥局集团有限公司 A kind of low retracting secondary stretch-draw anchorage
CN109736213B (en) * 2018-12-29 2024-04-05 柳州欧维姆机械股份有限公司 Tool for quickly replacing clamping piece group anchor type steel strand inhaul cable and dismantling construction method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2448925Y (en) * 2000-07-24 2001-09-19 陶纪南 Expansion crack pressure type prestressed mud injection anchor
CN201665942U (en) * 2009-12-08 2010-12-08 张正刚 Integral hollow reinforced concrete prestressed slab tensioning machine
KR20110057882A (en) * 2009-11-25 2011-06-01 큐바이오텍 (주) Method for treating wastewater containing high concentration of organic matter and nitrogen and device therefor
CN202181508U (en) * 2011-06-18 2012-04-04 湘潭欧之姆预应力锚具有限公司 Device for screwing up supporting nut of low-retracting secondary stretch-draw anchorage device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2448925Y (en) * 2000-07-24 2001-09-19 陶纪南 Expansion crack pressure type prestressed mud injection anchor
KR20110057882A (en) * 2009-11-25 2011-06-01 큐바이오텍 (주) Method for treating wastewater containing high concentration of organic matter and nitrogen and device therefor
CN201665942U (en) * 2009-12-08 2010-12-08 张正刚 Integral hollow reinforced concrete prestressed slab tensioning machine
CN202181508U (en) * 2011-06-18 2012-04-04 湘潭欧之姆预应力锚具有限公司 Device for screwing up supporting nut of low-retracting secondary stretch-draw anchorage device

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