CN102268857A - Low-retracting secondary stretch-draw anchorage supporting nut screwing device - Google Patents
Low-retracting secondary stretch-draw anchorage supporting nut screwing device Download PDFInfo
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- CN102268857A CN102268857A CN2011101647636A CN201110164763A CN102268857A CN 102268857 A CN102268857 A CN 102268857A CN 2011101647636 A CN2011101647636 A CN 2011101647636A CN 201110164763 A CN201110164763 A CN 201110164763A CN 102268857 A CN102268857 A CN 102268857A
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- spacer shell
- adapter sleeve
- ground tackle
- swiveling wheel
- groove
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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
Technical field
The present invention relates to a kind of low retraction two times tensioning ground tackle back nut device for screwing up, particularly two times tensioning ground tackle back nut device for screwing up in groove.
Background technology
At present, the bridge engineering vertical prestressing adopts low retraction two times tensioning ground tackle, because of ground tackle on beam top but do not allow to exceed bridge floor, low retraction two times tensioning ground tackle must be arranged in the groove that is lower than bridge floor.Ground tackle is being carried out the second time during stretching construction, its back nut need be tightened downwards, because it is in the groove, the space is narrow and small in addition, bring difficulty and inconvenience to constructing operation, manually tighten operation for satisfying simultaneously, it is just bigger that bridge floor is reserved groove size, 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 retraction two times tensioning ground tackle back nut device for screwing up of operation in the groove.
The present invention solves the technical scheme that its technical problem takes: it comprises convex formula adapter sleeve 1, spacer shell 2, passive swiveling wheel 3, active rotation wheel 4, engine 5 and stretch-draw support 6, in the design of convex formula adapter sleeve 1 inner chamber inner convex platform is arranged, its inner convex platform matches with the corresponding groove of two times tensioning ground tackle back nut 7 peripheries; The upper surface of convex formula adapter sleeve 1 is provided with the groove more than 3, spacer shell 2 lower surfaces are provided with the boss that matches with the groove of convex formula adapter sleeve 1 upper surface more than 3, and the groove of convex formula adapter sleeve 1 upper surface becomes matched in clearance to be connected with the boss of spacer shell 2 lower surfaces; On the spacer shell 2 whirligig is set.The whirligig that is provided with on the described spacer shell 2 can be rotary handle or turnbarrel; Also can be the gear rotating mechanism, spacer shell 2 upper ends are connected with passive swiveling wheel 3; Passive swiveling wheel 3 is connected with manual rotating mechanism; Or adopt 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 that matches 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 gear transferring power square that is meshed; Active rotation is taken turns the design of 4 centers has interior axis hole to link to each other 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 that matches with the groove of spacer shell 2 upper surfaces setting 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 convex formula 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 diameters 0.5～15mm, and spacer shell 2 lower surface boss and corresponding recesses gap, corresponding convex formula adapter sleeve 1 upper surface are between 0.3～15mm.
The invention has the beneficial effects as follows: it has solved the problem of tightening of low retraction two times tensioning ground tackle back nut preferably, can significantly reduce simultaneously bridge floor and reserve groove size, reduce bridge concrete and cut down the 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, hangs down in the installing and using of retraction two times tensioning ground tackle especially for the bridge engineering vertical prestressing.
Description of drawings
Fig. 1 is a user mode structural representation of the present invention
Fig. 2 is a convex formula adapter sleeve structural representation.
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 swiveling wheel structural representation.
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.
Among the figure: 1-convex formula adapter sleeve; The 2-spacer shell; The passive swiveling wheel of 3-; 4-active rotation wheel; The 5-engine; 6-stretch-draw support; 7-two times tensioning ground tackle back 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
That the invention will be further described is as follows below in conjunction with embodiment:
Embodiment 2: the whirligig that the present invention is provided with on spacer shell 2 also can be 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 rotating mechanism.After the two times tensioning ground tackle is finished stretch-draw for the first time and is put, remove stretch-draw instruments such as jack, convex formula adapter sleeve 1 is installed in two times tensioning ground tackle back 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, at this moment, also has 7～13mm gap between two times tensioning anchor ring 8 and the backing plate 9.At this moment can drive 1 rotation of passive swiveling wheel 3 drive spacer shells 2 promotion convex formula adapter sleeves by operating manual rotating mechanism, 1 rotation of convex formula adapter sleeve drives two times tensioning ground tackle back nut 7 and is rotated down, arrive and contact plane on the backing plate 9 until two times tensioning ground tackle back nut 7, eliminate the gap between two times tensioning anchor ring 8 and the backing plate 9, finish 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 is provided with on spacer shell 2 is except that adopting above-mentioned manual operation, also can adopt actuating unit to drive, consult Fig. 1, spacer shell 2 upper ends are connected with passive swiveling wheel 3, and roller gear is set in passive swiveling wheel 3 peripheries, 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 gear transferring power square that is meshed; Active rotation is taken turns the design of 4 centers has interior axis hole to link to each other 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 is finished stretch-draw for the first time and is put, remove stretch-draw instruments such as jack, convex formula adapter sleeve 1 is installed in two times tensioning ground tackle back 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, tension rod 11 and jack 12 is linked together with attaching nut 13.After starting jack and finishing stretch-draw for the second time and reach designing requirement, between two times tensioning anchor ring 8 and the backing plate 9 7～13mm gap appears.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 two times tensioning ground tackle back nut 7 is rotated down, arrive and contact plane on the backing plate 9 until two times tensioning ground tackle back nut 7, eliminate gap between two times tensioning anchor ring 8 and the backing plate 9, engine 5 shuts down, and finishes 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 convex formula 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, lower end circumference establish 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 the little down big round platform of, following round platform footpath Φ 126mm, high 10mm, last round platform external diameter Φ 132mm, high 15mm.It is the 2mm spur gear that last 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 the 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 joins strong the installation with active rotation wheel 4 interior axis holes and is connected, and consults Fig. 1 to Fig. 9, and all the other are with above-mentioned embodiment.
Claims (8)
1. one kind is hanged down retraction two times tensioning ground tackle back nut device for screwing up, it is characterized in that: it comprises convex formula adapter sleeve (1), spacer shell (2), passive swiveling wheel (3), active rotation wheel (4), engine (5) and stretch-draw support (6), in the design of convex formula adapter sleeve (1) inner chamber inner convex platform is arranged, its inner convex platform matches with the corresponding groove of two times tensioning ground tackle back nut (7) periphery; The upper surface of convex formula adapter sleeve (1) is provided with the groove more than 3, spacer shell (2) lower surface is provided with the boss that matches with the groove of convex formula adapter sleeve (1) upper surface more than 3, and the groove of convex formula adapter sleeve (1) upper surface becomes matched in clearance to be connected with the boss of spacer shell (2) lower surface; Spacer shell is provided with whirligig on (2).
2. low retraction two times tensioning ground tackle back nut device for screwing up according to claim 1 is characterized in that: it is rotary handle or turnbarrel that spacer shell (2) is gone up the whirligig that is provided with.
3. low retraction two times tensioning ground tackle back nut device for screwing up according to claim 1 is characterized in that: it is the gear rotating mechanism that spacer shell (2) is gone up the whirligig that is provided with, and spacer shell (2) upper end is connected with passive swiveling wheel (3); Passive swiveling wheel (3) is connected with manual rotating mechanism.
4. low retraction two times tensioning ground tackle back nut device for screwing up according to claim 1 is characterized in that: it is the gear rotating mechanism that spacer shell (2) is gone up the whirligig that is provided with, 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 that matches 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; (4) center design of active rotation wheel has interior axis hole to link to each other with keyway and with the output shaft of engine (5).
5. low retraction two times tensioning ground tackle back nut device for screwing up 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 that matches 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 retraction two times tensioning ground tackle back nut device for screwing up according to claim 1 is characterized in that: described passive swiveling wheel (3) is as a whole with spacer shell (2).
7. low retraction two times tensioning ground tackle back nut device for screwing up according to claim 1, it is characterized in that: the inner convex platform shape of described convex formula 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 retraction two times tensioning ground tackle back nut device for screwing up 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, and spacer shell (2) lower surface boss and corresponding recesses gap, corresponding convex formula adapter sleeve (1) upper surface are between 0.3～15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110164763 CN102268857B (en) | 2011-06-18 | 2011-06-18 | Low-retracting secondary stretch-draw anchorage supporting nut screwing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110164763 CN102268857B (en) | 2011-06-18 | 2011-06-18 | Low-retracting secondary stretch-draw anchorage supporting nut screwing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102268857A true CN102268857A (en) | 2011-12-07 |
| CN102268857B CN102268857B (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110164763 Expired - Fee Related CN102268857B (en) | 2011-06-18 | 2011-06-18 | Low-retracting secondary stretch-draw anchorage supporting nut screwing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102268857B (en) |
Cited By (4)
| 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 |
| CN105926445A (en) * | 2016-05-04 | 2016-09-07 | 中国十九冶集团有限公司 | Bridge high pier self-lifting outer frame turnover formwork expansion device |
| 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 |
| CN109736213A (en) * | 2018-12-29 | 2019-05-10 | 柳州欧维姆机械股份有限公司 | For the quick-replaceable tooling of intermediate plate group's anchor formula guy of twisted steel cable and its Demolition Construction method |
Citations (4)
| 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 |
-
2011
- 2011-06-18 CN CN 201110164763 patent/CN102268857B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
Cited By (5)
| 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 |
| CN105926445A (en) * | 2016-05-04 | 2016-09-07 | 中国十九冶集团有限公司 | Bridge high pier self-lifting outer frame turnover formwork expansion device |
| 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 |
| CN109736213A (en) * | 2018-12-29 | 2019-05-10 | 柳州欧维姆机械股份有限公司 | For the quick-replaceable tooling of intermediate plate group's anchor formula guy of twisted steel cable and its Demolition Construction method |
| 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 |
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| Publication number | Publication date |
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| CN102268857B (en) | 2013-12-25 |
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Granted publication date: 20131225 Termination date: 20190618 |