CN203393632U - Movable formwork device for negative bending moment tension of precast T-beam flange plate - Google Patents
Movable formwork device for negative bending moment tension of precast T-beam flange plate Download PDFInfo
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- CN203393632U CN203393632U CN201320452015.2U CN201320452015U CN203393632U CN 203393632 U CN203393632 U CN 203393632U CN 201320452015 U CN201320452015 U CN 201320452015U CN 203393632 U CN203393632 U CN 203393632U
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- precast
- jack
- horizon bar
- formwork device
- movable formwork
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Abstract
The utility model discloses a movable formwork device for negative bending moment tension of a precast T-beam flange plate. The movable formwork device is characterized by comprising a walking frame, a roller, a lifting device, a balanced lever and a jack; the walking frame comprises two balancing frames which are disposed oppositely to each other; the tops of the two balancing frames are connected through a crossbeam on which the roller capable of rolling along the length direction of the beam is arranged; walking wheels are mounted at the bottoms of the balancing frames; a limit ferrule for preventing the roller from rolling outside the crossbeam is sleeved on the roller; the lifting device is installed at the lower end of the limit ferrule; the lower end of the lifting device is connected with the top of the balanced lever, the bottom end of the balance lever is connected with the jack through a tray movably connected with the balanced lever; the balanced lever is capable of maintaining bending moment balanced under tension force of the lifting device and the weight of the jack. The movable formwork device has the advantages of being reasonable in structure and design, easy to use, rapid in transition, high in safety and work efficiency, uniform in the force of a strand and capable of meeting design requirements.
Description
Technical field
The utility model relates to a kind of movable formwork device, especially relates to hogging moment stretch-draw movable formwork device under a kind of Precast T-Beam frange plate.
Background technology
At present, Precast T-Beam bridge deck working procedure is cast-in-place, the wet seam construction of erecting T beam, pier top continuous segment, the hogging moment stretch-draw of frange plate lower end, anticollision barrier construction and Surfacing Construction, forms a bridge floor integral body.Generally, during hogging moment stretch-draw, need to set up a suspention falsework at the wet seam crossing of beam sheet, because of the stretch-draw tooth block space that hogging moment arranges limited, the little jack of normal employing is realized many steel strand on Precast T-Beam is carried out to single tendon stretch, or is realized many steel strand on Precast T-Beam are carried out to integral tension at bridge floor lifting jack by reserving hole in beam.Yet, adopting little jack single tendon stretch mode, steel strand may be wound around in pipeline, cannot guarantee steel strand uniform stressed, affect prestressing tendon construction effect, cannot meet design requirement; Adopt reserved hole for hoist integral tension mode, although can guarantee the work quality of prestressing tendon, reserving hole positioning precision directly affects stretch-draw operation, before and after wanting, fall to push up simultaneously, during transition, moving jack wastes time and energy, and has very large potential safety hazard, and operating efficiency is low.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, hogging moment stretch-draw movable formwork device under a kind of Precast T-Beam frange plate is provided, its simple in structure, reasonable in design and use easy to operate, result of use good, can effectively solve the problem that adopts little jack single tendon stretch mode steel strand to be easily wound around, cannot to guarantee steel strand uniform stressed in pipeline, and move the problem that jack is wasted time and energy while adopting reserved hole for hoist integral tension mode to fall top, transition before and after must needing, security performance is high simultaneously, and operating efficiency is high.
For achieving the above object, the technical solution adopted in the utility model is: hogging moment stretch-draw movable formwork device under a kind of Precast T-Beam frange plate, it is characterized in that: comprise walker, roller, lifting gear, balanced lever and jack, described walker comprises balancing stand, the quantity of described balancing stand is that two and two balancing stands are oppositely arranged, between the top of two balancing stands, by crossbeam, be connected, the bottom of described balancing stand is provided with road wheel, described roller is arranged on crossbeam and can rolls along the length direction of crossbeam, on described roller, overlap to have and can prevent that roller is rolled into the spacing cuff outside crossbeam, described lifting gear is arranged on the lower end of spacing cuff, the top of described balanced lever is connected with the lower end of lifting gear, the termination, bottom of described balanced lever is connected with jack by pallet and balanced lever can keep moment of flexure balance under the pulling force effect of lifting gear and the Gravitative Loads of jack, described balanced lever and pallet are rotationally connected.
Hogging moment stretch-draw movable formwork device under above-mentioned Precast T-Beam frange plate, is characterized in that: described lifting gear is jack, and the chain drum of described jack is arranged on the lower end of spacing cuff, and the suspension hook of described jack is connected with the top of balanced lever.
Hogging moment stretch-draw movable formwork device under above-mentioned Precast T-Beam frange plate, it is characterized in that: described balanced lever is comprised of upper horizon bar, vertical bar and lower horizon bar, described upper horizon bar and lower horizon bar parallel and are all arranged on a side of vertical bar, described vertical Gan upper end is fixedly connected with one end of upper horizon bar, and described vertical Gan lower end is fixedly connected with one end of lower horizon bar; The middle part of described upper horizon bar is connected with the suspension hook of jack, the other end termination of described lower horizon bar is connected with plate, described lower horizon bar is rotationally connected through passing plate and the bearing pin of pallet and the middle part of pallet, on described pallet, have a plurality of connecting holes, described jack is fixed on pallet through the iron wire through connecting hole.
Hogging moment stretch-draw movable formwork device under above-mentioned Precast T-Beam frange plate, is characterized in that: the shape of cross section of described pallet is U font.
Hogging moment stretch-draw movable formwork device under above-mentioned Precast T-Beam frange plate, is characterized in that: the length of described lower horizon bar is half of adjacent two Precast T-Beam beam rib clear distances.
Hogging moment stretch-draw movable formwork device under above-mentioned Precast T-Beam frange plate, is characterized in that: described upper horizon bar, vertical bar and lower horizon bar are reinforcing bar, and described upper horizon bar, vertical bar and lower horizon bar are one-body molded.
Hogging moment stretch-draw movable formwork device under above-mentioned Precast T-Beam frange plate, is characterized in that: described balancing stand is triangle balance frame, and the quantity of described road wheel is four, and the bottom of each balancing stand is all provided with two road wheels.
Hogging moment stretch-draw movable formwork device under above-mentioned Precast T-Beam frange plate, is characterized in that: described spacing cuff is rectangle reinforcing bar cuff.
Hogging moment stretch-draw movable formwork device under above-mentioned Precast T-Beam frange plate, is characterized in that: the length of described crossbeam and adjacent two Precast T-Beam beam rib centre distances equate.
Hogging moment stretch-draw movable formwork device under above-mentioned Precast T-Beam frange plate, is characterized in that: described balancing stand is reinforcing bar balancing stand, and described crossbeam is channel-section steel.
The utility model compared with prior art has the following advantages:
1, the utility model is simple in structure, reasonable in design and result of use is good.
2, the utility model application lever principle, and combine longitudinal walking structure of walker, the horizontal walking structure of roller and the lift action of lifting gear are integrated, need in Precast T-Beam, not reserve hole for hoist, do not need to fall to push up before and after operating personnel, real-time motor-driven slippage transition, use easy to operately, operating efficiency is high.
3, the utility model has overcome and adopts little jack single tendon stretch mode discontinuity, affects quality and steel strand the defect being wound around easily occurs in pipeline, solved again simultaneously and adopted reserved hole for hoist integral tension mode manually to fall the potential safety hazard on top because reserving hole deviation in beam affects the hidden danger of furred ceiling integral tension and transition, simplified operation, transition is convenient.
4, the utility model takes up room little, after can utilizing the existing material in job site, facility assembled formation, can use, not only guaranteed the safe mass of working procedure, also accelerated progress, saved labour simultaneously, strengthened the practicality of movable formwork device, time saving and energy saving efficient, practical.
5, the utility model can ensured the quality of products and safety in the situation that, and many steel strand on Precast T-Beam are implemented to integral tensions, has accelerated progress, has improved conversion effect; Also can implement single tendon stretch to the steel strand on Precast T-Beam.
Below by drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is use state diagram of the present utility model.
Fig. 2 is the annexation schematic diagram of the utility model balanced lever and plate.
Fig. 3 is the structural representation of the utility model pallet.
Fig. 4 is the structural representation of the spacing cuff of the utility model.
Description of reference numerals:
1-balancing stand; 2-road wheel; 3-crossbeam;
4-roller; 5-spacing cuff; 6-lifting gear;
7-balanced lever; 7-1-upper horizon bar; 7-2-vertical bar;
7-3-lower horizon bar; 8-bearing pin; 9-pallet;
9-1-connecting hole; 10-jack; 11-plate.
The specific embodiment
As shown in Figure 1, the utility model comprises walker, roller 4, lifting gear 6, balanced lever 7 and jack 10, described walker comprises balancing stand 1, the quantity of described balancing stand 1 is that two and two balancing stands 1 are oppositely arranged, between the top of two balancing stands 1, by crossbeam 3, be connected, the bottom of described balancing stand 1 is provided with road wheel 2, described roller 4 is arranged on crossbeam 3 and can rolls along the length direction of crossbeam 3, on described roller 4, overlap to have and can prevent that roller 4 is rolled into the spacing cuff 5 outside crossbeam 3, described lifting gear 6 is arranged on the lower end of spacing cuff 5, the top of described balanced lever 7 is connected with the lower end of lifting gear 6, the termination, bottom of described balanced lever 7 is connected with jack 10 by pallet 9 and balanced lever 7 can keep moment of flexure balance under the pulling force effect of lifting gear 6 and the Gravitative Loads of jack 10, described balanced lever 7 is rotationally connected with pallet 9.
As shown in Figure 1, described lifting gear 6 is jack, and the chain drum of described jack is arranged on the lower end of spacing cuff 5, and the suspension hook of described jack is connected with the top of balanced lever 7; Lifting gear 6 can also be small winch or assembly pulley zoarium.
As depicted in figs. 1 and 2, described balanced lever 7 is comprised of upper horizon bar 7-1, vertical bar 7-2 and lower horizon bar 7-3, described upper horizon bar 7-1 and lower horizon bar 7-3 parallel and are all arranged on a side of vertical bar 7-2, described vertical Gan7-2 upper end is fixedly connected with upper horizon bar 7-1 one end, and described vertical Gan7-2 lower end is fixedly connected with lower horizon bar 7-3 one end; The middle part of described upper horizon bar 7-1 is connected with the suspension hook of jack, the other end termination of described lower horizon bar 7-3 is connected with plate 11, described lower horizon bar 7-3 is rotationally connected through the bearing pin 8 through plate 11 and pallet 9 and the middle part of pallet 9, on described pallet 9, have a plurality of connecting hole 9-1, described jack 10 is fixed on pallet 9 through the iron wire through connecting hole 9-1.
As shown in Figure 3, the shape of cross section of described pallet 9 is U font, and pallet 9 can be channel-section steel, also can utilize on-the-spot existing angle steel or reinforcing bar to replace channel-section steel to be welded, and guarantees to block not slippage of jack.
In the present embodiment, the length of described lower horizon bar 7-3 is half of adjacent two Precast T-Beam beam rib clear distances, if short, contiguous prefabricated T girder tensioning will laterally move position; If long, limited space, needs transverse shifting lifting gear 6 to reorientate during contiguous prefabricated T girder tensioning.
In the present embodiment, described upper horizon bar 7-1, vertical bar 7-2 and lower horizon bar 7-3 are reinforcing bar, also can utilize on-the-spot existing angle steel, channel-section steel, i iron or steel tube fastener to connect and replace reinforcing bar to be welded, described upper horizon bar 7-1, vertical bar 7-2 and lower horizon bar 7-3 are one-body molded.
As shown in Figure 1, described balancing stand 1 is triangle balance frame, and the quantity of described road wheel 2 is four, and the bottom of each balancing stand 1 is all provided with two road wheels 2, to guarantee movable formwork device stabilized walking.
As shown in Figure 4, described spacing cuff 5 is rectangle reinforcing bar cuff, is mainly convenient through the eyelet in the middle of roller 4.
In the present embodiment, the length of described crossbeam 3 and adjacent two Precast T-Beam beam rib centre distances are equal, and operating personnel's rotary balance lever can arrive the hogging moment position of adjacent two Precast T-Beams like this.
In the present embodiment, described balancing stand 1 is reinforcing bar balancing stand, also can utilize on-the-spot existing material, adopts angle steel welding fabrication or steel tube fastener to set up and forms; Described crossbeam 3 is channel-section steel, also can adopt i iron or two angle steel to being bundled into square structure.
Operating principle of the present utility model is: two balancing stands 1 of walker are placed on respectively on adjacent two Precast T-Beams, operating personnel promote walker and can realize movable formwork device integral body and advance, retreat location, operating personnel pull spacing cuff 5 to realize the traversing location of jack 10, operation lifting gear (jack) 6 can be realized the lifting location of jack 10, operating personnel's rotary balance lever 7 can arrive the hogging moment position of adjacent two Precast T-Beams, promote pallet 9 and control its horizontal setting angle, steel strand on Precast T-Beam are introduced in jack 10 hole, promote balanced lever 7, promote the installation in position that lifting gear 6 completes jack 10, installation work ground tackle and intermediate plate are implemented stretch-draw to steel strand, after stretch-draw completes, return work ground tackle and intermediate plate, promotion walker retreats, decline lifting gear 6 completes the top work of moving back, then traversing roller 4, ajust balanced lever 7 to wet seam space, promote lifting gear 6 and pull out jack 10, pass walker transition, repeat above-mentioned action and implement the stretch-draw of hogging moment prestressing tendon.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification, change and equivalent structure transformation of above embodiment being done according to the utility model technical spirit, all still belongs in the protection domain of technical solutions of the utility model.
Claims (10)
1. hogging moment stretch-draw movable formwork device under a Precast T-Beam frange plate, it is characterized in that: comprise walker, roller (4), lifting gear (6), balanced lever (7) and jack (10), described walker comprises balancing stand (1), the quantity of described balancing stand (1) is that two and two balancing stands (1) are oppositely arranged, between the top of two balancing stands (1), by crossbeam (3), be connected, the bottom of described balancing stand (1) is provided with road wheel (2), described roller (4) is arranged on crossbeam (3) above and can rolls along the length direction of crossbeam (3), the upper cover of described roller (4) has can prevent that roller (4) is rolled into the outer spacing cuff (5) of crossbeam (3), described lifting gear (6) is arranged on the lower end of spacing cuff (5), the top of described balanced lever (7) is connected with the lower end of lifting gear (6), the termination, bottom of described balanced lever (7) is connected with jack (10) by pallet (9) and balanced lever (7) can keep moment of flexure balance under the pulling force effect of lifting gear (6) and the Gravitative Loads of jack (10), described balanced lever (7) is rotationally connected with pallet (9).
2. according to hogging moment stretch-draw movable formwork device under Precast T-Beam frange plate claimed in claim 1, it is characterized in that: described lifting gear (6) is jack, the chain drum of described jack is arranged on the lower end of spacing cuff (5), and the suspension hook of described jack is connected with the top of balanced lever (7).
3. according to hogging moment stretch-draw movable formwork device under Precast T-Beam frange plate claimed in claim 2, it is characterized in that: described balanced lever (7) is comprised of upper horizon bar (7-1), vertical bar (7-2) and lower horizon bar (7-3), described upper horizon bar (7-1) and lower horizon bar (7-3) parallel and are all arranged on a side of vertical bar (7-2), the upper end of described vertical bar (7-2) is fixedly connected with one end of upper horizon bar (7-1), and the lower end of described vertical bar (7-2) is fixedly connected with one end of lower horizon bar (7-3); The middle part of described upper horizon bar (7-1) is connected with the suspension hook of jack, the other end termination of described lower horizon bar (7-3) is connected with plate (11), described lower horizon bar (7-3) is rotationally connected through passing plate (11) and the bearing pin (8) of pallet (9) and the middle part of pallet (9), on described pallet (9), have a plurality of connecting holes (9-1), described jack (10) is fixed on pallet (9) through the iron wire through connecting hole (9-1).
4. according to hogging moment stretch-draw movable formwork device under Precast T-Beam frange plate claimed in claim 3, it is characterized in that: the shape of cross section of described pallet (9) is U font.
5. according to hogging moment stretch-draw movable formwork device under the Precast T-Beam frange plate described in claim 3 or 4, it is characterized in that: the length of described lower horizon bar (7-3) is half of adjacent two Precast T-Beam beam rib clear distances.
6. according to hogging moment stretch-draw movable formwork device under the Precast T-Beam frange plate described in claim 3 or 4, it is characterized in that: described upper horizon bar (7-1), vertical bar (7-2) and lower horizon bar (7-3) are reinforcing bar, described upper horizon bar (7-1), vertical bar (7-2) and lower horizon bar (7-3) are one-body molded.
7. according to hogging moment stretch-draw movable formwork device under the Precast T-Beam frange plate described in arbitrary claim in claim 1-4, it is characterized in that: described balancing stand (1) is triangle balance frame, the quantity of described road wheel (2) is four, and the bottom of each balancing stand (1) is all provided with two road wheels (2).
8. according to hogging moment stretch-draw movable formwork device under the Precast T-Beam frange plate described in arbitrary claim in claim 1-4, it is characterized in that: described spacing cuff (5) is rectangle reinforcing bar cuff.
9. according to hogging moment stretch-draw movable formwork device under the Precast T-Beam frange plate described in arbitrary claim in claim 1-4, it is characterized in that: the length of described crossbeam (3) and adjacent two Precast T-Beam beam rib centre distances equate.
10. according to hogging moment stretch-draw movable formwork device under the Precast T-Beam frange plate described in arbitrary claim in claim 1-4, it is characterized in that: described balancing stand (1) is reinforcing bar balancing stand, and described crossbeam (3) is channel-section steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320452015.2U CN203393632U (en) | 2013-07-27 | 2013-07-27 | Movable formwork device for negative bending moment tension of precast T-beam flange plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320452015.2U CN203393632U (en) | 2013-07-27 | 2013-07-27 | Movable formwork device for negative bending moment tension of precast T-beam flange plate |
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| Publication Number | Publication Date |
|---|---|
| CN203393632U true CN203393632U (en) | 2014-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320452015.2U Expired - Lifetime CN203393632U (en) | 2013-07-27 | 2013-07-27 | Movable formwork device for negative bending moment tension of precast T-beam flange plate |
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|---|---|
| CN (1) | CN203393632U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108239935A (en) * | 2017-12-11 | 2018-07-03 | 山西路桥建设集团有限公司 | A kind of device suitable for Precast T-Beam hogging moment tensioning |
| CN111717785A (en) * | 2020-07-07 | 2020-09-29 | 中国建筑第四工程局有限公司 | Adjusting and hoisting device for T-beam hogging moment prestress tensioning jack |
| CN113089493A (en) * | 2021-04-19 | 2021-07-09 | 中建八局南方建设有限公司 | High pier T beam hogging moment tensioning device and tensioning method |
-
2013
- 2013-07-27 CN CN201320452015.2U patent/CN203393632U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108239935A (en) * | 2017-12-11 | 2018-07-03 | 山西路桥建设集团有限公司 | A kind of device suitable for Precast T-Beam hogging moment tensioning |
| CN111717785A (en) * | 2020-07-07 | 2020-09-29 | 中国建筑第四工程局有限公司 | Adjusting and hoisting device for T-beam hogging moment prestress tensioning jack |
| CN113089493A (en) * | 2021-04-19 | 2021-07-09 | 中建八局南方建设有限公司 | High pier T beam hogging moment tensioning device and tensioning method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |
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| CX01 | Expiry of patent term |