CN104179125B - A kind of mobile formwork girder supports uses equalizer bar device - Google Patents
A kind of mobile formwork girder supports uses equalizer bar device Download PDFInfo
- Publication number
- CN104179125B CN104179125B CN201410438054.6A CN201410438054A CN104179125B CN 104179125 B CN104179125 B CN 104179125B CN 201410438054 A CN201410438054 A CN 201410438054A CN 104179125 B CN104179125 B CN 104179125B
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- girder
- equalizer bar
- hinged
- support
- mobile formwork
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Abstract
The present invention relates to a kind of mobile formwork girder support equalizer bar device, comprise and be arranged on the girder case advanced on chassis, and to be vertically arranged in girder case and to be installed on the girder case bracing frame of girder box top; The lower end of girder case bracing frame connects hinged mechanism, and the lower end of hinged mechanism is connected with the top of equalizer bar, forms balance beam type support system; Between the bottom of equalizer bar and propelling chassis, two hoist cylinders are installed.The present invention is by being connected on equalizer bar by hinged structure, form balance beam type support system, before and after girder, bridge pier Support Position place all arranges this balance beam type support system, form the simply supported beam mechanical model of mobile formwork girder, during concreting, can ensure that whole load is evenly passed on two hoist cylinders by equalizer bar support system, make to advance the bracket beam uniform force below chassis, prevent bracket beam part overloading and unbalance loading, effectively ensure that device security.
Description
Technical field
The invention belongs to technical field of bridge construction, particularly relate to a kind of mobile formwork girder support equalizer bar device.
Background technology
Mobile formwork is that one carries template, utilizes cushion cap or pier stud as supporting, bridge is carried out to the construction equipment of cast in situs.As the construction equipment of a kind of advanced person, owing to having good, the easy and simple to handle and efficiency advantages of higher of construction quality, mobile formwork has been widely used in the Construction of continuous beam of speedway, road bridge and railway bridge.
The traveling of mobile formwork realizes by advancing chassis, chassis is provided with length travel oil cylinder and lateral displacement oil cylinder, to realize the vertical shift of mobile formwork, traversing and lifting.The propelling chassis of existing mobile formwork is arranged on below girder lower wing plate, and chassis seat is arranged on above bracket beam upper flange, and mobile formwork routine advances trolley device to have some deficiency following:
1, chassis is provided with hoist cylinder, vertical shift oil cylinder and sideslip oil cylinder, when chassis is arranged between girder and bracket by conventional mobile formwork, the height that the height of chassis must be greater than oil cylinder could carry girder, make the integral device height of mobile formwork large, occupy under-clearance height, stricter requirement is had to bridge pier height, because which limit the construction of mobile formwork at squat pier body bridge during bridge construction.
2, the hoist cylinder of conventional mobile formwork chassis is positioned at below girder lower wing plate, and its piston rod stretches out and directly carries girder when concreting, in order to ensure that chassis is passed to the equilibrium of the support force on the bracket beam of below, a chassis can only be arranged a hoist cylinder, therefore the bearing capacity of separate unit hoist cylinder is huge, improves the reliability requirement of hydraulic system.
3, trolley device complex structure, overall deadweight is heavier.
Summary of the invention
The object of the invention is to overcome prior art defect, a kind of uniform force, device security, structure simple mobile formwork girder support equalizer bar device is provided.
Technical scheme of the present invention is:
Comprise and be arranged on the girder case advanced on chassis, and to be vertically arranged in girder case and to be installed on the girder case bracing frame of girder box top; The lower end of girder case bracing frame connects hinged mechanism, and the lower end of hinged mechanism is connected with the top of equalizer bar, forms balance beam type support system; Between the bottom of equalizer bar and propelling chassis, the hoist cylinder that two are parallel to girder is installed; All arrange this balance beam type support system at the adjacent bridge pier Support Position place of girder, form the simply supported beam mechanical model of mobile formwork girder.
The bottom of described girder case is provided with girder lower shoe, and the position that girder lower shoe is corresponding with hoist cylinder offers the through hole that the piston rod of hoist cylinder can be made to pass through; Described two hoist cylinders are inversion type, and its base is connected to the two ends bottom equalizer bar, and its piston rod is supported on through the through hole on girder lower shoe and advances on chassis.
Described hinged mechanism comprises the first hinged-support and the second hinged-support that are hinged, and the upper end of the first hinged-support connects girder case bracing frame, and the second hinged-support lower end connects equalizer bar.
Described first hinged-support and the second hinged-support are hinged by bearing pin.
Be fixedly connected with respectively by bolt group between described girder case bracing frame, the first hinged-support, the second hinged-support, equalizer bar and hoist cylinder.
Described hoist cylinder is raise-lower hydraulic oil cylinder.
Described girder case bracing frame is welded by some block plates.
The present invention relative to existing technologies, has following useful technique effect:
The present invention is by being connected on equalizer bar by hinged structure, form balance beam type support system, before and after girder, bridge pier Support Position place all arranges this balance beam type support system, form the simply supported beam mechanical model of mobile formwork girder, equipment is simple, during concreting, can ensure that whole load is evenly passed on two hoist cylinders by equalizer bar support system, make to advance the bracket beam uniform force below chassis, prevent bracket beam part overloading and unbalance loading, effectively ensure that device security.
Further, the present invention balances equalizer bar in beam type support system and is arranged in girder case, the piston rod of two hoist cylinders can be supported on by the hole on girder lower shoe and advance on chassis, when mobile formwork concreting, hoist cylinder piston rod stretches out, be supported on and advance on chassis, to promote girder height, reach bridge casting position, build concrete, hoist cylinder indentation piston rod, to reduce girder height, girder is separated with the bridge solidified, and now girder lower shoe is directly supported on and advances on chassis.Hoist cylinder is inverted and is connected on equalizer bar by the present invention, demand fulfillment does not advance the height of chassis must be greater than the condition of hoist cylinder height, can greatly improve advance chassis height can selectance, by reducing the height advancing chassis, thus reduce mobile formwork whole height, the present invention can reduce nearly about 1 meter of mobile formwork whole height, effectively reduce mobile formwork system take bridge under headway, meet the construction operating mode of short bridge pier bridge.The present invention is reasonable in design, and structure is simple, overall from heavy and light, safe and convenient to use.
Accompanying drawing explanation
Fig. 1 is overall structure front view of the present invention.
Fig. 2 is overall structure right view of the present invention.
Fig. 3 is the overall schematic of the present invention for mobile formwork.
Wherein: 1-girder case bracing frame, 2-first high-strength bolt group, 3-first hinged-support, 4-bearing pin, 5-second hinged-support, 6-second high-strength bolt group, 7-equalizer bar, 8-the 3rd bolt group, 9-hoist cylinder, 10-advances chassis; 11-piston rod; 12-girder lower shoe; 13-bracket beam top flange plate; 14-bridge to be built; Bridge pier before 15-; 16-forward horizontal stand beam type support system installation site; 17-rear abutment; 18-back balance beam type support system installation site.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further details:
Below provide specific embodiments of the invention, it should be noted that the present invention is not limited to following specific embodiment, all equivalents done on technical scheme basis all fall into protection scope of the present invention.
As depicted in figs. 1 and 2, girder case bracing frame 1 of the present invention to be vertically arranged in girder casing and to be installed on girder box top, be welded by some block plates, first hinged-support 3 is connected with girder case bracing frame 1 bottom by the first bolt group 2, ensures the reliability that the first hinged-support 3 is connected with girder case bracing frame 1.First hinged-support 3 is connected to form hinged structure by bearing pin 4 and the second hinged-support 5, and girder front and rear fulcrum relies on this hinged structure to form simply supported beam, can balance casting process middle girder front and back end stressed.Second hinged-support 5 is connected with equalizer bar 7 by the second high-strength bolt group 6, and form balance beam type support system, the second high-strength bolt group 6 ensures the reliability that equalizer bar 7 is connected with the second hinged-support 5 simultaneously.The bottom of equalizer bar 7 is installed two inverted hoist cylinders, 9, two hoist cylinders 9 by the 3rd bolt group 8 and is connected into straight line parallel in girder, and the base of hoist cylinder 9 is connected to bottom equalizer bar 7; 3rd bolt group 8 ensures that hoist cylinder 9 and equalizer bar 7 are without slippage.Hoist cylinder 9 is raise-lower hydraulic oil cylinder, be provided with the piston rod 11 of Liftable type, the bottom of girder case is provided with girder lower shoe 12, the position that girder lower shoe 12 is corresponding with hoist cylinder 9 offers the through hole that piston rod 11 can be made to pass through, piston rod 11 is through the through hole on girder lower shoe 12, its end support, on propelling chassis 10, advances chassis 10 to be pressed on bracket beam top flange plate 13, can be realized the girder lifting action of mobile formwork by the piston rod lifting of hoist cylinder 9.
The operating principle that the present invention is main and process: in the present invention, two hinged-supports and bearing pin 4 form hinged structure, and form balance beam type support system with equalizer bar 7, girder installed by bridge 14 to be built, and at girder front and rear fulcrum (i.e. bridge pier Support Position before and after girder) place, namely forward horizontal stand beam type support system installation site 16 place before on bridge pier 15, back balance beam type support system installation site 18 place on rear abutment 17, all arrange this balance beam type support system, form simply supported beam mechanical model, as shown in Figure 3.During concreting, can ensure that whole load is evenly passed on bracket beam by equalizer bar support system, prevent bracket beam part overloading and unbalance loading, the hole that the piston rod 11 of hoist cylinder 9 passes girder lower shoe 12 can be supported on propelling chassis 10, advances chassis 10 to be pressed on bracket beam top flange plate 13.During mobile formwork concreting, the piston rod 11 of hoist cylinder 9 stretches out, and is supported on and advances on chassis 10, to promote girder height, reach bridge casting position, and now girder is separated with propelling chassis 10; Build concrete, hoist cylinder 9 indentation piston rod, to reduce girder height, girder is separated with the bridge solidified, now girder lower shoe 12 is supported on and advances on chassis 10, recycling advances the sideslip oil cylinder on chassis 10 and vertical shift oil cylinder to complete die sinking, the vertical shift construction operating mode of mobile formwork, enters the construction location of next bridge beam.
Claims (5)
1. mobile formwork girder supports and use an equalizer bar device, it is characterized in that: comprise the girder case being arranged on and advancing on chassis (10), and it is interior and be installed on the girder case bracing frame (1) of girder box top to be vertically arranged on girder case; The lower end of girder case bracing frame (1) connects hinged mechanism, and the lower end of hinged mechanism is connected with the top of equalizer bar (7), forms balance beam type support system; Between the bottom of equalizer bar (7) and propelling chassis (10), the hoist cylinder (9) that two are parallel to girder is installed; All arrange this balance beam type support system at the adjacent bridge pier Support Position place of girder, form the simply supported beam mechanical model of mobile formwork girder;
Described hinged mechanism comprises the first hinged-support (3) and the second hinged-support (5) that are hinged, and the upper end of the first hinged-support (3) connects girder case bracing frame (1), the second hinged-support (5) lower end connects equalizer bar (7);
Described hoist cylinder (9) is raise-lower hydraulic oil cylinder.
2. a kind of mobile formwork girder support equalizer bar device according to claim 1, it is characterized in that: the bottom of described girder case is provided with girder lower shoe (12), the position that girder lower shoe (12) is corresponding with hoist cylinder (9) offers the through hole that the piston rod of hoist cylinder (9) (11) can be made to pass through; Two described hoist cylinders (9) are inversion type, its base is connected to the two ends of equalizer bar (7) bottom, and its piston rod (11) is supported on through the through hole on girder lower shoe (12) and advances on chassis (10).
3. a kind of mobile formwork girder support equalizer bar device according to claim 1 and 2, is characterized in that: described first hinged-support (3) and the second hinged-support (5) are hinged by bearing pin (4).
4. a kind of mobile formwork girder support equalizer bar device according to claim 1 and 2, is characterized in that: between described girder case bracing frame (1) and the first hinged-support (3), be fixedly connected with respectively by bolt group between the second hinged-support (5) and equalizer bar (7) and between equalizer bar (7) and hoist cylinder (9).
5. a kind of mobile formwork girder support equalizer bar device according to claim 1 and 2, is characterized in that: described girder case bracing frame (1) is welded by some block plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410438054.6A CN104179125B (en) | 2014-08-29 | 2014-08-29 | A kind of mobile formwork girder supports uses equalizer bar device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410438054.6A CN104179125B (en) | 2014-08-29 | 2014-08-29 | A kind of mobile formwork girder supports uses equalizer bar device |
Publications (2)
| Publication Number | Publication Date |
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| CN104179125A CN104179125A (en) | 2014-12-03 |
| CN104179125B true CN104179125B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410438054.6A Expired - Fee Related CN104179125B (en) | 2014-08-29 | 2014-08-29 | A kind of mobile formwork girder supports uses equalizer bar device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106192772B (en) * | 2016-07-19 | 2017-12-15 | 中建五局土木工程有限公司 | Jack bascule and mobile formwork for mobile formwork |
| CN106976799B (en) * | 2017-05-19 | 2018-03-16 | 山东恒堃机械有限公司 | Hanging beam before a kind of mobile formwork |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0967809A (en) * | 1995-08-30 | 1997-03-11 | Sho Bond Constr Co Ltd | Bridge floor slab dismantling method and its device |
| CN101892633A (en) * | 2010-07-22 | 2010-11-24 | 中交第二航务工程局有限公司 | Self-propelled small radius movable mould frame |
| CN201713767U (en) * | 2010-04-29 | 2011-01-19 | 郑州市华中建机有限公司 | Bridge erecting machine for bridge erection |
| CN201857580U (en) * | 2010-11-09 | 2011-06-08 | 秦皇岛天业通联重工股份有限公司 | Double-girder bridge girder erection machine for erecting variable span type trough girder |
| CN202658533U (en) * | 2012-06-06 | 2013-01-09 | 长安大学 | Movable formwork of curved bridge with variable width |
| CN204212057U (en) * | 2014-08-29 | 2015-03-18 | 长安大学 | A kind of mobile formwork girder supports uses equalizer bar device |
-
2014
- 2014-08-29 CN CN201410438054.6A patent/CN104179125B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0967809A (en) * | 1995-08-30 | 1997-03-11 | Sho Bond Constr Co Ltd | Bridge floor slab dismantling method and its device |
| CN201713767U (en) * | 2010-04-29 | 2011-01-19 | 郑州市华中建机有限公司 | Bridge erecting machine for bridge erection |
| CN101892633A (en) * | 2010-07-22 | 2010-11-24 | 中交第二航务工程局有限公司 | Self-propelled small radius movable mould frame |
| CN201857580U (en) * | 2010-11-09 | 2011-06-08 | 秦皇岛天业通联重工股份有限公司 | Double-girder bridge girder erection machine for erecting variable span type trough girder |
| CN202658533U (en) * | 2012-06-06 | 2013-01-09 | 长安大学 | Movable formwork of curved bridge with variable width |
| CN204212057U (en) * | 2014-08-29 | 2015-03-18 | 长安大学 | A kind of mobile formwork girder supports uses equalizer bar device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104179125A (en) | 2014-12-03 |
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Granted publication date: 20151209 Termination date: 20160829 |