CN204212057U - 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
- CN204212057U CN204212057U CN201420497187.6U CN201420497187U CN204212057U CN 204212057 U CN204212057 U CN 204212057U CN 201420497187 U CN201420497187 U CN 201420497187U CN 204212057 U CN204212057 U CN 204212057U
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- China
- Prior art keywords
- girder
- equalizer bar
- support
- hinged
- mobile formwork
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Abstract
The utility model relates to a kind of mobile formwork girder support equalizer bar device, comprises and is 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 utility model 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 utility model belongs to technical field of bridge construction, particularly relates 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 purpose of this utility model overcomes prior art defect, provides a kind of uniform force, device security, structure simple mobile formwork girder support equalizer bar device.
The technical solution of the utility model 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 utility model relative to existing technologies, has following useful technique effect:
The utility model 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, in the utility model balance beam type support system, equalizer bar 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 utility model, 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 utility model 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 utility model is reasonable in design, and structure is simple, overall from heavy and light, safe and convenient to use.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure front view.
Fig. 2 is the utility model overall structure right view.
Fig. 3 is the overall schematic of the utility model 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 utility model is described in further details:
Below provide specific embodiment of the utility model, it should be noted that the utility model is not limited to following specific embodiment, all equivalents done on technical scheme basis all fall into protection domain of the present utility model.
As depicted in figs. 1 and 2, girder case bracing frame 1 of the present utility model 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 utility model is main and process: in the utility model, 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 (7)
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.
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; Described two 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, it is characterized in that: 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).
4. a kind of mobile formwork girder support equalizer bar device according to claim 3, is characterized in that: described first hinged-support (3) and the second hinged-support (5) are hinged by bearing pin (4).
5. a kind of mobile formwork girder support equalizer bar device according to claim 3, is characterized in that: be fixedly connected with respectively by bolt group between described girder case bracing frame (1), the first hinged-support (3), the second hinged-support (5), equalizer bar (7) and hoist cylinder (9).
6. a kind of mobile formwork girder support equalizer bar device according to claim 1 and 2, is characterized in that: described hoist cylinder (9) is raise-lower hydraulic oil cylinder.
7. a kind of mobile formwork girder support equalizer bar device according to claim 6, 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 |
|---|---|---|---|
| CN201420497187.6U CN204212057U (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 |
|---|---|---|---|
| CN201420497187.6U CN204212057U (en) | 2014-08-29 | 2014-08-29 | A kind of mobile formwork girder supports uses equalizer bar device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204212057U true CN204212057U (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420497187.6U Expired - Fee Related CN204212057U (en) | 2014-08-29 | 2014-08-29 | A kind of mobile formwork girder supports uses equalizer bar device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204212057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179125A (en) * | 2014-08-29 | 2014-12-03 | 长安大学 | Balance beam device for supporting movable formwork main beam |
| CN107217600A (en) * | 2017-06-21 | 2017-09-29 | 中铁四局集团有限公司 | Box beam bearing installs chassis |
-
2014
- 2014-08-29 CN CN201420497187.6U patent/CN204212057U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179125A (en) * | 2014-08-29 | 2014-12-03 | 长安大学 | Balance beam device for supporting movable formwork main beam |
| CN104179125B (en) * | 2014-08-29 | 2015-12-09 | 长安大学 | A kind of mobile formwork girder supports uses equalizer bar device |
| CN107217600A (en) * | 2017-06-21 | 2017-09-29 | 中铁四局集团有限公司 | Box beam bearing installs chassis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20150829 |
|
| EXPY | Termination of patent right or utility model |