CN101302739B - Prestress concrete box girder hydraulic internal mold vehicle as well as hydraulic internal mold system - Google Patents
Prestress concrete box girder hydraulic internal mold vehicle as well as hydraulic internal mold system Download PDFInfo
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- CN101302739B CN101302739B CN2008101326934A CN200810132693A CN101302739B CN 101302739 B CN101302739 B CN 101302739B CN 2008101326934 A CN2008101326934 A CN 2008101326934A CN 200810132693 A CN200810132693 A CN 200810132693A CN 101302739 B CN101302739 B CN 101302739B
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Abstract
The invention discloses a hydraulic internal moulding vehicle of a prestressed concrete box girder which is used in railways, public roads, city highway bridges, and comprises a composite internal moulding board, a plurality of hydraulic oil cylinder sets, a surge car and a plurality of groups of stay bars, the surge car is arranged inside an inner cavity of the composite internal moulding board, and a top moulding board inside the composite internal moulding board is respectively butt connected with end surfaces of a left moulding board, a right moulding board and a middle moulding board; a telescopic oil cylinder of the top moulding board and telescopic oil cylinders of the left, the right and the middle moulding boards are respectively hinged with the surge car and inner surfaces of the top moulding board and the middle moulding board, and telescopic oil cylinders of the left moulding board, the right moulding board and a lower moulding board are respectively hinged with the lower moulding board and the middle moulding board; the composite internal moulding board is supported by the stay bars after being set up. The invention further provides a hydraulic internal molding system of the prestressed concrete box girder. The middle moulding board of the hydraulic internal moulding vehicle adopts a linear movable demoulding way that is the same with the top moulding board, thus leading the peeling of the moulding board to be easier, the required space for moving the moulding board to be smaller and consequently the moulding board to be easier to pass through prepared holes on an end clapboard of the box girder, and the internal moulding system has stronger adaptive capacity and the arrangement of the hydraulic oil cylinders is more reasonable.
Description
Technical field
The present invention relates to a kind of hydraulic internal mold device of producing railway, highway, the employing of urban road bridge prestress concrete box girder.
Background technology
PC Box Girder Structure is simple, elegant in appearance, easily manufactured, supporting capacity is strong, dominate in railway, highway, urban road bridge, it is produced the prefabricated and bridge location of branch factory and builds two kinds, and main production process has mould installation, reinforcing bar binding, concreting and maintenance, mould dismounting etc.Case beam production mould is made up of internal mold, external mold wing plate mould, side form and end mould and supporting basis, and its internal mold generally is made up of polylith template and braced structures thereof, installs and removes by manually carrying out.Its weak point is that operating environment is poor, labour intensity is big, production efficiency is low.
Application number provides a kind of full-automatic hydraulic prefabricated box girder inner formwork system for 200610201284.6 Chinese patent, the inner formword of this system is by backform and a pair ofly go up the inner corner trim mould and a pair of down the inner corner trim mould is hinged forms, going up oblique oil cylinder is connected between backform and the last inner corner trim mould, oblique oil cylinder is connected between inner corner trim mould and the following inner corner trim mould down, be interval with bracing frame in the cavity bottom central authorities that inner formword is enclosed along case beam depth, set up rail on the bracing frame, walking translation dolly on the rail, the translation dolly comprises travelling wheel, a vehicle frame and a seat beam that is fixed on the vehicle frame, the vehicle frame of translation dolly extends to outside the inner formword, lays hydraulic power unit and operating desk on it.The translation dolly can whole be walked, and has made things convenient for the integral body of internal mold to come in and go out.
But, middle template in the said system and top template adopt rotating stripping demoulding, its weak point is: rotating stripping demoulding is undesirable because of the angle of power that hydraulic jack applies, can produce very big component, the part of hydraulic jack applied force makes the template rotation, plays the effect of the demoulding, part component there is no help to the rotation of template, but directly bear by formwork structure, pass to the center hinge of rotation, cause demoulding difficulty; In addition, because the existence of above-mentioned harmful component, the needed rigidity of template is bigger, and the template materials are more, and the needed segment of rotating stripping demoulding space is bigger.
Summary of the invention
Technical problem to be solved by this invention is the problem that solves demoulding difficulty in the hydraulic internal mold devices that prestressed concrete box girder adopted such as railway, highway, urban road bridge.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention provides a kind of prestress concrete box girder hydraulic internal mold car, comprise the combined inner mold plate, some hydraulic jack groups, vertical shift dolly and some groups of struts, described vertical shift dolly is arranged in the internal cavities of combined inner mold plate and moves along the longitudinal axis of combined inner mold plate, described combined inner mold plate comprise top template, about in template and left and right sides lower bolster, template and left and right sides lower bolster are hinged respectively in about described, described top template respectively with about the end face butt of middle template; Described hydraulic jack group comprise the top template telescopic oil cylinder, about in template telescopic oil cylinder and left and right sides lower bolster telescopic oil cylinder, described top template telescopic oil cylinder and about in the cylinder body of template telescopic oil cylinder and piston rod hinged with the inner surface of vertical shift dolly and top template, middle template respectively, the cylinder body of described left and right sides lower bolster telescopic oil cylinder and piston rod are hinged with lower bolster and middle template respectively; Described top template, about on the inner surface of template and left and right sides lower bolster and be respectively equipped with some adjustable strut fixed hinged seats on the vertical shift dolly.
The cross section of template is that three bendings are tabular in about described, and its top bending part is parallel with top template respectively.The cross section of described top template is up-small and down-big trapezoidal, described about in the end face of top bending part of template be the inclined-plane and contact with the inclined end face of top template.
Described every group of strut comprises adjustable strut and sleeve strut, and described adjustable strut comprises top template strut, middle form spreader and lower bolster strut, and the two ends of described top template strut, middle form spreader and lower bolster strut are respectively equipped with and are connected free bearing.Described sleeve strut is made up of a jacket casing and a tube core that is inserted in the jacket casing, and jacket casing is connected with the following bending part and the vertical shift cart stationary of middle template inner surface respectively with the other two ends of tube core, is respectively equipped with fixed pin shaft on jacket casing and the tube core and installs through hole.
Also comprise bracing piece and following bracing piece, described last bracing piece is fixedlyed connected with the adjacent inner surface of jacket casing and middle template respectively with following bracing piece two ends with the both sides up and down and the last bracing piece of the jacket casing that following bracing piece is separately positioned on.
The following bending part of template inner surface during the pin joint of template telescopic oil cylinder and middle template is arranged in about described.
At least four of described top template telescopic oil cylinders are respectively perpendicular to the soffit of top template.
Described vertical shift dolly comprises binding-beam and some driving wheels of two girders that be arranged in parallel, the described girder of some connections, and described driving wheel is by motor-driven.
The present invention also provides a kind of prestress concrete box girder hydraulic internal mold system, comprise above-mentioned prestress concrete box girder hydraulic internal mold car, track and Hydraulic Station, described track is arranged on the bed die of this case beam along the prestress concrete box girder longitudinal axis by the rail support built-in fitting, the setting of described prestress concrete box girder hydraulic internal mold car vertically moves in orbit and along track, and described Hydraulic Station is connected with the hydraulic jack group of prestress concrete box girder hydraulic internal mold car respectively by hydraulic tube
This prestress concrete box girder hydraulic internal mold system also comprises some template supporting built-in fittings, and described template supporting built-in fitting is arranged between the bed die of lower bolster and prestress concrete box girder.
The present invention, top template and middle template butt, after the top template demoulding, template telescopic oil cylinder axis shrinks to the vertical shift dolly in the middle template edge, and middle template has adopted the straight line identical with backform to move stripping means, and peeling off of template is more prone to, the template needed space of moving is littler, template can bounce back to littler volume, thereby easier of case beam-ends dividing plate preformed hole, the inner formwork system adaptive capacity is stronger.In addition, it is more reasonable that hydraulic jack is arranged, the axis of hydraulic jack and the angle of concrete surface bigger (90 degree are for best) make harmful component of hydraulic jack littler, and the design load of hydraulic jack is littler, and the demoulding is convenient, operation safe.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A schematic cross-section of Fig. 1;
Fig. 3 is the B-B schematic cross-section of Fig. 1;
Fig. 4 is the C-C schematic cross-section of Fig. 1;
Fig. 5 is the D-D schematic cross-section of Fig. 1;
Fig. 6～Fig. 8 is a demoulding step schematic diagram of the present invention;
Wherein:
The 10-template, the 11-top template, middle template about 12-, 13-left and right sides lower bolster, 14-cuts with scissors with one heart;
The adjustable strut of 20-, 21-top template strut, 22-left and right sides lower bolster strut is strengthened strut on the middle template telescopic oil cylinder about 23-, and middle template telescopic oil cylinder is strengthened strut down about 24-, the middle vertical strut of template about 25-, the middle oblique strut of template about 26-;
30-sleeve strut, 31-jacket casing, 32-tube core, the last bracing piece of 33-, bracing piece under the 34-, 35-bearing pin;
40-vertical shift dolly, 41-dolly girder, 42-dolly driving wheel, 43-dolly girder bracing;
The 50-Hydraulic Station;
The 60-hydraulic jack, middle template telescopic oil cylinder about 61-, 62-top template telescopic oil cylinder, 63-left and right sides lower bolster telescopic oil cylinder;
The 70-track;
The 80-built-in fitting, 81-rail support built-in fitting, 82-template supporting built-in fitting.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is made detailed explanation.
Fig. 1 to Fig. 5 props up the state of time-out for combined inner mold plate of the present invention.
As shown in Figure 1, the present invention mainly is made up of combined inner mold plate 10, some groups of adjustable struts 20, some groups of sleeve struts 30, vertical shift dolly 40 and some groups of hydraulic jack groups 60.Described combined inner mold plate 10 is fixed on the vertical shift dolly 40 by adjustable strut 20, sleeve strut 30, hydraulic jack group 60; Hydraulic jack group 60 of the present invention vertically lays respectively in the different cross sections along the hydraulic internal mold car with adjustable strut 20, sleeve strut 30.
Fig. 2 is the A-A schematic cross-section of Fig. 1, and the A-A cross section is a supporting section of the present invention, and adjustable strut 20 and sleeve strut 30 can be positioned at this cross section.As shown in Figure 2, in this cross section, described vertical shift dolly 40 comprises binding-beam 43 and some driving wheels 42 of two girders that be arranged in parallel 41, the described girder 41 of some connections, and described driving wheel 42 is by motor-driven.Described combined inner mold plate 10 by top template 11, about in template 12 and left and right sides lower bolster 13 form; The cross section of top template 11 is up-small and down-big trapezoidal, about in the cross section of template 12 be that three bendings are tabular, its top bending part is parallel with top template 11 respectively, and about in the end face of top bending part of template 12 be the inclined-plane.Top template 11 is placed in the middle, and both sides respectively are provided with a middle template 12, about in the lower end of template 12 be connected with lower bolster 13 by concentric hinge 14 respectively; Top template 11 from bottom to top with the inclined-plane butt of middle template 12.Adopt this structure, can not only effectively prevent spillage, also can be conveniently stripped.
Fig. 4 is the C-C schematic cross-section of Fig. 1, and left and right sides lower bolster telescopic oil cylinder 63 is positioned at this cross section.As shown in Figure 4, about in the upper inside surface of template 12 and the lower inner surface of left and right sides lower bolster 13 be articulated and connected by left and right sides lower bolster telescopic oil cylinder 63, simultaneously, the rigidity of template 12 and left and right sides lower bolster 13 in about be strengthening, about in also distinguish between template 12 and the left and right sides lower bolster 13 hinged about the middle vertical strut 25 of template.
Fig. 5 is the D-D schematic cross-section of Fig. 1, and this cross section is a supporting section schematic diagram of the present invention.As shown in Figure 5, top template 11 is articulated and connected by the girder 41 of two vertical with top template 11 soffits respectively top template struts 21 with the vertical shift dolly, about in template 12 pass through about in the oblique strut of template 26 hinged with the girder 41 of vertical shift dolly, left and right sides lower bolster 13 is articulated and connected with the girder 41 of vertical shift dolly respectively by lower bolster strut 22.
The purpose that above-mentioned each cross section is provided with adjustable strut is to strengthen the rigidity of combined inner mold plate, and the demand of visible combinations formwork rigidity takes the circumstances into consideration to increase and decrease adjustable strut quantity.
Fig. 6～Fig. 8 is a demoulding step schematic diagram of the present invention.
Fig. 6 is left and right sides lower bolster 13 demoulding schematic diagrames, and step is: remove left and right sides lower bolster strut 22, about in the vertical strut 25 of template; Start Hydraulic Station 50, lower bolster telescopic oil cylinder 63 retractions in the left and right sides drive left and right sides lower bolster 13 around concentric hinge 14 rotations, peel off with concrete surface.
Fig. 7 is top template 11 demoulding schematic diagrames, and step is: remove top template strut 21; Start Hydraulic Station 50, top template telescopic oil cylinder 62 retractions drive top template 11 and descend along vertical, peel off with concrete surface.
Fig. 8 be about in template 12 demoulding schematic diagrames, step is: about dismounting in the oblique strut 26 of template; Extract bearing pin 35; Start Hydraulic Station 50, about in template telescopic oil cylinder 61 retractions, about drive in template 12 simultaneously inwardly, move down, peel off with concrete surface.
The present invention also provides a kind of prestress concrete box girder hydraulic internal mold system, comprise some above-mentioned prestress concrete box girder hydraulic internal mold cars, track 70 and Hydraulic Station 50, vertical shift dolly 40 belows are provided with two tracks 70 along prestress concrete box girder longitudinal axis direction, and track 70 is fixed on the bed die of concrete box girder by rail support built-in fitting 81; Vertical shift dolly 40 is arranged on the track 70, and under motor-driven, vertically moves along track 70, moves into or shift out the inner chamber of concrete box girder.Hydraulic Station 50 links to each other with hydraulic jack group 60 by oil pipe, the stretching, contract and action such as static of control hydraulic jack group 60.The internal mold of a slice concrete box girder is made up of several prestress concrete box girder hydraulic internal mold car word orders.
Built-in fitting of the present invention adopts precast unit, and the built-in fitting concrete adopts and equates or a high grade with the box girder body concrete label, and the contact surface cutter hair of built-in fitting and newly placed concrete is cleaned, and the two helps improving beam physique amount in conjunction with better.
Installation of the present invention and job step are as follows:
Built-in fitting 80 is made up of rail support built-in fitting 81 and template supporting built-in fitting 82, and behind the concrete box girder reinforcing bar binding, at first attachment rail supporting built-in fitting 81, template support built-in fitting 82 and be fixed on the beam body steel mesh reinforcement; Install then and trapped orbit 70, will contract and sail the design attitude of case beam inner chamber to the present invention of minimum dimension along track 70 into; The 3rd step is with reference to Fig. 8 to Fig. 6, template 12, top template 11, left and right sides lower bolster 13 in about opening successively, install respectively top template strut 21, about in the vertical strut 25 of template, about in the oblique strut 26 of template and left and right sides lower bolster strut 22, and adjust above-mentioned adjustable strut, the inner surface of itself and inner formword is firmly supported; The 4th step, the present invention adjust to the right place and fixing after, concreting, vibrate, health.The installation of the adjustable strut of the present invention is example all with manual operations with certain 32 rice bin beam, and its inner chamber height is 2.25 meters, deduct about 0.12 meter of the height of template, 2.13 meters of remaining space height, the end partition wall inner chamber height at case beam two ends is 1.75 meters, deduct back 1.63 meters, enough workman's operations.The operating personnel operates by reaching from the empty crotch between two girders of dolly, and is very convenient.
Demounting procedure of the present invention:
Contract to minimum dimension according to the described step demoulding of Fig. 6 to Fig. 8 and with the present invention; Drive vertical shift dolly 40, the present invention is rolled away from the inner chamber of finished product concrete box girder along track 70; Remove track 70 and rail support built-in fitting 81 in the case beam inner chamber.
The present invention can save steel 20%～40% than conventional art.32 meters simple supported box beam is an example to stride directly, and its weight can be reduced to 10kN/ rice.In addition, the present invention shrinks the back volume and reduces significantly, and adaptive capacity is strong.The simple supported box beam internal mold car of striding 32 meters in footpath with certain is an example, and its section is contracted to 3.9 * 1.6 meters by 5.44 * 2.25 meters, and reduced cross-sectional reaches 50%, so just makes the adaptive capacity of internal mold car stronger.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (8)
1. prestress concrete box girder hydraulic internal mold car, comprise the combined inner mold plate, some hydraulic jack groups, some groups of adjustable struts and vertical shift dolly, described vertical shift dolly is arranged in the internal cavities of combined inner mold plate, described combined inner mold plate comprise top template, about in template and left and right sides lower bolster, template and left and right sides lower bolster are hinged respectively in about described, described top template respectively with about the end face butt of middle template; Described hydraulic jack group comprise the top template telescopic oil cylinder, about in template telescopic oil cylinder and left and right sides lower bolster telescopic oil cylinder, the top template telescopic oil cylinder and about in the cylinder body of template telescopic oil cylinder and piston rod hinged with the inner surface of vertical shift dolly and top template, middle template respectively, the cylinder body of described left and right sides lower bolster telescopic oil cylinder and piston rod are hinged with lower bolster and middle template respectively; Described top template, about in be respectively equipped with some adjustable struts and be connected free bearing on the inner surface of template and left and right sides lower bolster with on the vertical shift dolly, it is characterized in that also comprising some groups of sleeve struts, described sleeve strut is made up of a jacket casing and a tube core that is inserted in the jacket casing, the other two ends of jacket casing and tube core respectively with about in the following bending part and the vertical shift cart stationary of template inner surface is connected, be respectively equipped with fixed pin shaft on a jacket casing and the core and install through hole.
2. prestress concrete box girder hydraulic internal mold car as claimed in claim 1, it is characterized in that described about in the cross section of template be that three bendings are tabular, its top bending part is parallel with top template respectively.
3. prestress concrete box girder hydraulic internal mold car as claimed in claim 2, the cross section that it is characterized in that described top template are up-small and down-big trapezoidal, described about in the end face of top bending part of template be the inclined-plane and contact with the inclined end face of top template.
4. prestress concrete box girder hydraulic internal mold car as claimed in claim 1, it is characterized in that described adjustable strut comprise the top template strut, about in form spreader and left and right sides lower bolster strut, described top template strut, about in the two ends of form spreader and left and right sides lower bolster strut be respectively equipped with and be connected free bearing.
5. prestress concrete box girder hydraulic internal mold car as claimed in claim 1, it is characterized in that also comprising bracing piece and following bracing piece, described go up bracing piece and following bracing piece be separately positioned on the both sides up and down of jacket casing and respectively with jacket casing with about the adjacent inner surface of middle template fixedly connected.
6. as claim 1 to the 5 described prestress concrete box girder hydraulic internal mold of each a claim car, it is characterized in that described about in template telescopic oil cylinder and the pin joint of middle template be arranged on the following bending part of middle template inner surface.
7. prestress concrete box girder hydraulic internal mold system, it is characterized in that comprising some prestress concrete box girder hydraulic internal mold cars as claimed in claim 1, track and Hydraulic Station, described track is arranged on the bed die of this case beam along the prestress concrete box girder longitudinal axis by the rail support built-in fitting, the setting of described prestress concrete box girder hydraulic internal mold car vertically moves in orbit and along track, and described Hydraulic Station is connected with the hydraulic jack group of prestress concrete box girder hydraulic internal mold car respectively by hydraulic tube.
8. prestress concrete box girder hydraulic internal mold as claimed in claim 7 system is characterized in that also comprising some templates supporting built-in fittings, and described template supporting built-in fitting is arranged between the bed die of lower bolster and prestress concrete box girder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101326934A CN101302739B (en) | 2008-07-10 | 2008-07-10 | Prestress concrete box girder hydraulic internal mold vehicle as well as hydraulic internal mold system |
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| CN2008101326934A CN101302739B (en) | 2008-07-10 | 2008-07-10 | Prestress concrete box girder hydraulic internal mold vehicle as well as hydraulic internal mold system |
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| CN101302739A CN101302739A (en) | 2008-11-12 |
| CN101302739B true CN101302739B (en) | 2010-06-02 |
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Families Citing this family (12)
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| CN101885206B (en) * | 2010-07-02 | 2012-07-25 | 中铁四局集团第四工程有限公司 | Hydraulic internal mold truss type walking track system of high speed railway prefabricating box girder |
| CN102189595A (en) * | 2011-04-14 | 2011-09-21 | 湖南中铁五新钢模有限责任公司 | Guide pillar type hydraulic internal mold for straight web plate box girder |
| CN102409621B (en) * | 2011-11-17 | 2013-11-20 | 中铁十五局集团有限公司 | Easy-to-dismount steel mould for hollow beam of bridge |
| ES2561930B1 (en) * | 2014-07-29 | 2016-12-07 | Rubrica Ingenieria Y Arquitectura, S.L. | FOLDING FORMWORK FOR A BRIDGE BOARD AND FORMWORK FORWARD PROCEDURE |
| CN104746434B (en) * | 2015-03-31 | 2017-01-25 | 中铁第五勘察设计院集团有限公司 | Closure segment formwork system without dismantling outer formwork |
| CN105442838A (en) * | 2015-12-24 | 2016-03-30 | 湖南中铁五新钢模有限责任公司 | Stub matching prefabricated U-shaped segmental beam formwork and formwork retracting method thereof |
| CN107387122A (en) * | 2017-08-17 | 2017-11-24 | 中铁上海工程局集团有限公司 | A kind of formwork jumbo and its construction method for the construction of piping lane tunneling boring |
| CN111778853B (en) * | 2019-04-06 | 2022-04-12 | 振中建设集团有限公司 | Inner cavity template recycling construction method for concrete structure with closed inner cavity |
| CN110524687B (en) * | 2019-08-13 | 2020-09-29 | 中交第四航务工程局有限公司 | Immersed tube tunnel internal mold system and construction method |
| CN111136779B (en) * | 2020-01-13 | 2021-06-04 | 山东博远重工有限公司 | Internal mold structure convenient for demolding |
| CN112726425B (en) * | 2021-02-09 | 2023-05-02 | 中交三公局第六工程有限公司 | Internal mold frame for continuous beam suspension casting construction |
| CN113605208B (en) * | 2021-08-11 | 2022-11-25 | 长安大学 | Corrugated steel web PC box girder, internal support external pulling device and construction method of support before lining |
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| CN201244857Y (en) * | 2008-07-10 | 2009-05-27 | 中铁大桥局股份有限公司 | Prestress concrete box girder hydraulic internal mold vehicle and hydraulic internal mold system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201244857Y (en) * | 2008-07-10 | 2009-05-27 | 中铁大桥局股份有限公司 | Prestress concrete box girder hydraulic internal mold vehicle and hydraulic internal mold system |
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Inventor after: Ma Tao Inventor after: Qin Shunquan Inventor after: Guo Rongchun Inventor after: Zhu Bin Inventor before: Ma Tao Inventor before: Qin Shunquan Inventor before: Guo Chunrong Inventor before: Zhu Bin |
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Effective date of registration: 20150216 Address after: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No. Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 430000 Hubei province Wuhan Dongxin East Lake New Technology Development Zone Road SBI Venture Street No. 6 Building 12 layer Railway Bridge Bureau Limited by Share Ltd Patentee before: China Zhongtie Major Bridge Engineering Co., Ltd. |