CN111749138A - Three-girder moving die frame structure - Google Patents
Three-girder moving die frame structure Download PDFInfo
- Publication number
- CN111749138A CN111749138A CN202010689505.9A CN202010689505A CN111749138A CN 111749138 A CN111749138 A CN 111749138A CN 202010689505 A CN202010689505 A CN 202010689505A CN 111749138 A CN111749138 A CN 111749138A
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- cross beam
- bottom template
- girder
- formwork
- oil cylinder
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a three girder moving die carrier structures, the bottom formworks II and the side form of bottom formworks I and both sides constitute pours the region, it makes the concrete box girder to pour concrete in its inside, the back is made to the concrete box girder, bottom formworks drive arrangement drive bottom formworks I drop mould, drive II drop moulds of bottom formworks, remove back moving mechanism drive dolly along the bracket to the outside end removal after the bolt between I and the crossbeam II, thereby bottom formworks II and the side form on drive side girder and the crossbeam II shift out outward and realize that crossbeam II moves to the outside of pier, thereby can satisfy the demand that moving die carrier moved from north to south, crossbeam II can not take place the interference collision with the pier when moving from north to south. The movable mould frame is provided with a bottom mould driving device for driving the bottom mould to be vertically adjusted, so that the requirement of the large-span arch bridge cast-in-place construction can be met.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a three-girder movable formwork structure.
Background
The movable formwork bridge fabrication machine is a construction machine with a template, a cushion cap or a pier stud is used as a support, and the construction machine is used for casting a bridge in situ and is mainly characterized in that: good construction quality, simple construction operation, low cost and the like. Therefore, the movable formwork is more and more widely applied to bridge construction, the traditional movable formwork adopts a double-girder mode, but when the concrete box girder to be poured belongs to an ultra-wide specification, the movable formwork bridge fabrication machine needs to use a three-girder structure, but the problem to be solved is solved by longitudinally moving the movable formwork of the three-girder structure through holes. As shown in fig. 7, the construction of the large-span arch bridge is carried out by using a hanging basket or a support, the construction of the hanging basket is carried out by non-one-time pouring, the bridge structure is reduced, and the support construction is one-time cast-in-place construction but has larger requirements on foundation foundations and is not suitable for being used in cross-sea and mountain areas.
Disclosure of Invention
The invention provides a three-girder movable formwork structure which can meet the requirement of longitudinally moving through holes after concrete box girders are poured in order to overcome the defects of the prior art.
The technical scheme adopted by the invention for overcoming the technical problems is as follows:
the utility model provides a three girder moving die carrier structures, includes the bracket that sets up respectively in two pier outsides, still includes:
the middle main beam is arranged in the middle of the movable formwork, the lower end of the middle main beam is arranged on a longitudinal moving trolley of the movable formwork, the left side and the right side of the upper end of the middle main beam are respectively and horizontally provided with a cross beam I, and the cross beam I is positioned between two piers;
the two side main beams are respectively arranged on the left side and the right side of the middle main beam, the left side and the right side of the upper end of each side main beam are respectively and horizontally provided with a cross beam II, and the cross beam II positioned at the inner side end and the cross beam I corresponding to the same side are fixedly connected through bolts;
the trolley is arranged on the bracket in a sliding mode along the left and right directions of the bracket through the moving mechanism, and the lower end of the side main beam is fixed on the trolley corresponding to the same side;
a plurality of bottom template driving devices are arranged on the cross beam I along the left-right direction, the bottom template I is arranged on the bottom template driving devices, and the bottom template driving devices drive the bottom template I to move up and down;
the upper end of a cross beam II positioned at the outer side end of the side main beam is provided with a side template, a plurality of bottom template driving devices are arranged on the cross beam II along the left-right direction, the bottom template II is arranged on the bottom template driving devices, and the bottom template driving devices drive the upper and lower moving ends of the bottom template II;
the bottom template I and the two bottom templates II are matched with the bottom curve of the concrete box girder.
Further, above-mentioned moving mechanism is including the flange board that the difference level set up both sides around the bracket and along the hydro-cylinder III that left right direction level set up, the lower extreme of dolly contacts with the up end of bracket, and the tail end of hydro-cylinder III is connected with the bracket is articulated, and the piston rod head end of hydro-cylinder III is connected with the dolly is articulated, and the buckle is located the lower extreme of flange board, and the up end of buckle and the lower terminal surface sliding friction contact of flange board, the buckle is fixed in on the dolly through connecting bolt.
Further, the bottom template driving device comprises a follow-up oil cylinder and a positioning oil cylinder which are vertically arranged on a cross beam I or a cross beam II respectively along the front-back direction, the lower ends of the follow-up oil cylinder and the positioning oil cylinder are hinged with the corresponding cross beam I or the corresponding cross beam II, the head ends of piston rods of the follow-up oil cylinder and the positioning oil cylinder are hinged with the lower ends of the corresponding bottom template I or the bottom template II, the outer side ends of the follow-up oil cylinder and the positioning oil cylinder are respectively provided with a base, the upper end of the base is provided with a mechanical screw top which is arranged above the mechanical screw top, the mechanical screw top is connected with an ear plate, the outer side end of the ear plate is hinged with the corresponding bottom template I or the bottom template II through a pin shaft, when the base is in a vertical state, the lower end of the base is fixedly connected with the corresponding cross beam I or the cross beam II through a bolt, and the head, when the lower end of the top of the mechanical screw is not connected with the bottom template I or the bottom template II and the follow-up oil cylinder and the positioning oil cylinder drive the bottom template to ascend, the bases rotate to the outside under the action of gravity, and the two bases are arranged in a splayed state.
In order to improve the stability, the steel wire rope-type bottom formwork stabilizing device further comprises a stabilizing frame which is arranged between the two bases of each bottom formwork driving device, the inner side ends of the two bases are connected with the stabilizing frame through bolts, and the upper end of the stabilizing frame is hung below the corresponding bottom formwork I or the bottom formwork II through a steel wire rope.
Preferably, the base is composed of a plurality of cushion blocks which are stacked from top to bottom, and the cushion blocks are connected and fixed through bolts.
The invention has the beneficial effects that: the bottom formwork I, the bottom formwork II on the two sides and the side formworks form a pouring area, concrete is poured into the pouring area to form a concrete box girder, after the concrete box girder is formed, the bottom formwork driving device drives the bottom formwork I to drop and drives the bottom formwork II to drop, a moving mechanism drives a trolley to move towards the outer side end along a bracket after a bolt between the cross beam I and the cross beam II is removed, so that the bottom formwork II on the driving side main beam and the cross beam II and the side formworks are outwards moved out to realize that the cross beam II moves to the outer side of a pier, the requirement for longitudinal movement of the movable formwork can be met, and the cross beam II cannot interfere with the pier when longitudinally moving. The movable mould frame is provided with a bottom mould driving device for driving the bottom mould to be vertically adjusted, so that the requirement of the large-span arch bridge cast-in-place construction can be met.
Drawings
FIG. 1 is a schematic structural view of the present invention in the case of casting a concrete box girder;
FIG. 2 is a schematic structural view of the present invention with the via longitudinally shifted;
FIG. 3 is a schematic structural view of a part III of the cylinder of the present invention;
FIG. 4 is a schematic view of the mechanical screw top supporting the bottom form of the present invention;
FIG. 5 is a schematic view illustrating the outward swinging state of the base according to the present invention;
FIG. 6 is a schematic view of a bottom mold in a mold-falling state according to the present invention;
FIG. 7 is a schematic longitudinal structural view of the long span arch bridge of the present invention;
in the figure, 1, a concrete box girder 2, a bracket 3, a longitudinal moving trolley 4, a middle main girder 5, a bottom template I6, a mechanical screw top 7, a side main girder 8, a cross girder II 9, a connecting bolt 10, a cross girder I11, a bottom template II 12, a trolley 13, an oil cylinder II 14, a flange plate 15, a buckle plate 16, a base 17, a follow-up oil cylinder 18, a positioning oil cylinder 19, a stabilizing frame 20, a steel wire rope 21, an ear plate 22 and a pin shaft are arranged.
Detailed Description
The invention will be further explained with reference to fig. 1, fig. 2 and fig. 3.
As shown in attached figures 1, 2 and 3, the three-girder movable formwork structure comprises corbels 2 arranged on the outer sides of two piers respectively, and further comprises: the middle main beam 4 is arranged in the middle of the movable formwork, the lower end of the middle main beam is arranged on the longitudinal moving trolley 3 of the movable formwork, the left side and the right side of the upper end of the middle main beam 4 are respectively and horizontally provided with a cross beam I10, and the cross beam I10 is positioned between two piers; the two side main beams 7 are respectively arranged on the left side and the right side of the middle main beam 4, the left side and the right side of the upper end of each side main beam 7 are respectively and horizontally provided with a cross beam II 8, and the cross beam II 8 positioned at the inner side end and the cross beam I10 corresponding to the same side are fixedly connected through bolts; the trolley 12 is arranged on the bracket 2 in a sliding mode along the left and right directions of the bracket 2 through a moving mechanism, and the lower end of the side main beam 7 is fixed on the trolley 12 corresponding to the same side; a plurality of bottom template driving devices are arranged on the cross beam I10 along the left-right direction, the bottom template I5 is installed on the bottom template driving devices, and the bottom template driving devices drive the bottom template I5 to move up and down; the upper end of a cross beam II 8 positioned at the outer side end of the side main beam 7 is provided with a side template, a plurality of bottom template driving devices are arranged on the cross beam II 8 along the left-right direction, a bottom template II 11 is arranged on the bottom template driving devices, and the bottom template driving devices drive the bottom template II 11 to move up and down; the bottom template I5 and the two bottom templates II 11 are matched with the bottom curve of the concrete box girder 1. The bottom formwork I5 and the bottom formworks II 11 and the side formworks on the two sides form a pouring area, concrete is poured into the pouring area to form a concrete box girder 1, after the concrete box girder 1 is formed, the bottom formwork driving device drives the bottom formwork I5 to drop and drives the bottom formwork II 11 to drop, after bolts between the cross beam I10 and the cross beam II 8 are disassembled, the moving mechanism driving trolley 12 moves towards the outer side end along the bracket 2, so that the bottom formwork II 11 and the side formworks on the driving side main beam 7 and the cross beam II 8 move outwards to realize that the cross beam II 8 moves to the outer side of a pier, the requirement for longitudinal movement of the movable formwork can be met, and the cross beam II 8 cannot interfere with the pier when longitudinally moving. The movable mould frame is provided with a bottom mould driving device for driving the bottom mould to be vertically adjusted, so that the requirement of the large-span arch bridge cast-in-place construction can be met.
The moving mechanism can be as follows structure, it includes that the level sets up respectively in the flange board 14 of corbel 2 front and back both sides and along the hydro-cylinder III 13 of left and right directions horizontal setting, the lower extreme of dolly 12 contacts with the up end of corbel 2, the tail end of hydro-cylinder III 13 is connected with corbel 2 is articulated, the piston rod head end of hydro-cylinder III 13 is connected with dolly 12 is articulated, buckle 15 is located the lower extreme of flange board 14, and the up end of buckle 15 and the lower terminal surface sliding friction contact of flange board 14, buckle 15 is fixed in on dolly 12 through connecting bolt 16. The piston rod of the oil cylinder III 13 extends outwards, the oil cylinder pushes the trolley 12 to slide outwards along the bracket 2, and the front end and the rear end of the bracket 2 are provided with the flange plates 14, and the pinch plates 15 are arranged below the flange plates 14, so that the limiting effect on the trolley 12 is achieved, and the trolley 12 is ensured to move only along the left direction and the right direction of the bracket 2.
As shown in fig. 4, the bottom form driving device may be a structure including a servo cylinder 17 and a positioning cylinder 18 vertically installed on a cross beam i 10 or a cross beam ii 8 respectively along the front-back direction, the lower ends of the servo cylinder 17 and the positioning cylinder 18 are hinged to the corresponding cross beam i 10 or the corresponding cross beam ii 8, the head end of the piston rod thereof is hinged to the lower end of the corresponding bottom form i 5 or the corresponding bottom form ii 11, the outer ends of the servo cylinder 17 and the positioning cylinder 18 are respectively provided with a base 16, the upper end of the base 16 is provided with a mechanical screw top 6, the mechanical screw top 6 is installed above the mechanical screw top 6, the mechanical screw top 6 is connected with an ear plate 21, the outer end of the ear plate 21 is hinged to the corresponding bottom form i 5 or the bottom form ii 11 through a pin 22, when the base 16 is in the vertical state, the lower end of the base 16 is connected and fixed to the corresponding cross beam i 10 or the cross beam, the screw head end of the mechanical screw top 6 is in contact with the lower end of the corresponding bottom template I5 or the lower end of the corresponding bottom template II 11, when the lower end of the mechanical screw top 6 is not connected with the bottom template I5 or the bottom template II 11 and the follow-up oil cylinder 17 and the positioning oil cylinder 18 drive the bottom template to ascend, the bases 16 rotate outwards under the action of gravity, and the two bases 16 are arranged in a splayed state. After the concrete box girder 1 is poured and tensioned, the bottom template I5 or the bottom template II 11 is supported by the mechanical spiral top 6, the base 16 is in a vertical state, the base 16 transmits the supporting force to the cross beam I10 or the cross beam II 8, then the bottom template I5, the bottom template II 11, the side templates, the cross beam I10, the cross beam II 8 and the mechanical spiral top 6 are integrally fallen off along with the movable formwork frame, the height of the fallen off mould is generally 20 cm, the bottom template I5, the bottom template II 11 and the side templates are separated from the concrete box girder 1, bolts between the base 16 below the mechanical spiral top 6 and the corresponding cross beam I10 or the cross beam II 8 are removed, piston rods of the following oil cylinder 17 and the positioning oil cylinder 18 extend outwards to drive the bottom template I5 or the bottom template II 11 to rise to a certain height (generally 10 cm), and at the moment, the mechanical spiral top 6 and the base 16 move outwards under the action of gravity, in the state shown in the attached figure 5, the screw head end of the mechanical screw top 6 is separated from the bottom template I5 or the bottom template II 11. Thereby achieving the purpose of keeping away the beam I10 or the beam II 8. Then, as shown in fig. 6, piston rods of the follow-up oil cylinder 17 and the positioning oil cylinder 18 retract inwards, so that the bottom die plate I5 or the bottom die plate II 11 is driven to be communicated with the mechanical screw top 6 and the base 16 to descend, and the integral die falling is realized. Because the height curve of the bottom of the concrete box girder 1 in the arch bridge construction is changed, the bottom formwork I5 or the bottom formwork II 11 is in an inclined state, the front end and the rear end of the bottom formwork can be respectively driven to move by respectively arranging the servo oil cylinder 17 and the positioning oil cylinder 18 on the two sides of the bottom formwork, the bottom formwork can be changed from the inclined state to the horizontal state, and the curve change of the bottom of the concrete box girder 1 which is better attached to the bottom formwork I5 or the bottom formwork II 11 is met.
Further, the formwork support device further comprises a stabilizing frame 19 which is arranged between the two bases 16 of each formwork drive device, the inner side ends of the two bases 16 are connected with the stabilizing frame 19 through bolts, and the upper end of the stabilizing frame 19 is hung below the corresponding formwork I5 or the corresponding formwork II 11 through a steel wire rope 20. Because the height of base 6 is than higher, consequently can make the fixed firmness between two bases 16 improve through stabilizer 19, when base 16 outwards swung, demolish the bolt between stabilizer 19 and the base 16, stabilizer 19 hangs through wire rope 20 and fixes the below at die block I5 or die block II 11. So that the movable mould frame can be connected and fixed with the two bases 16 when being longitudinally moved to the next span construction.
Preferably, the base 16 is composed of a plurality of cushion blocks stacked from top to bottom, and the cushion blocks are connected and fixed through bolts. Each cushion height can set up different models, consequently can realize not co-altitude base 16 through piling up, makes things convenient for the overlap joint to form the demand of the not co-altitude of base 16 that the bottom required when satisfying the concrete box girder height curve change.
Claims (5)
1. The utility model provides a three girder moving die carrier structures, includes bracket (2) that set up respectively in two pier outsides, its characterized in that still includes:
the middle main beam (4) is arranged in the middle of the movable formwork, the lower end of the middle main beam is arranged on a longitudinally-moving trolley (3) of the movable formwork, the left side and the right side of the upper end of the middle main beam (4) are respectively and horizontally provided with a cross beam I (10), and the cross beam I (10) is positioned between two piers;
the two side main beams (7) are respectively arranged on the left side and the right side of the middle main beam (4), the left side and the right side of the upper end of each side main beam (7) are respectively and horizontally provided with a cross beam II (8), and the cross beam II (8) positioned at the inner side end and the cross beam I (10) corresponding to the same side are fixedly connected through bolts;
the trolley (12) is arranged on the bracket (2) in a sliding mode along the left-right direction of the bracket (2) through the moving mechanism, and the lower end of the side main beam (7) is fixed on the trolley (12) corresponding to the same side;
a plurality of bottom template driving devices are arranged on the cross beam I (10) along the left-right direction, the bottom template I (5) is installed on the bottom template driving devices, and the bottom template driving devices drive the bottom template I (5) to move up and down;
the upper end of a cross beam II (8) positioned at the outer side end of the side main beam (7) is provided with a side template, a plurality of bottom template driving devices are arranged on the cross beam II (8) along the left-right direction, a bottom template II (11) is arranged on the bottom template driving devices, and the bottom template driving devices drive the upper and lower moving ends of the bottom template II (11);
the bottom template I (5) and the two bottom templates II (11) are matched with the bottom curve of the concrete box girder (1).
2. The three-girder mobile formwork structure of claim 1, wherein: moving mechanism is including respectively the level setting in flange board (14) of both sides around bracket (2) and hydro-cylinder III (13) that the direction level set up about along, the lower extreme of dolly (12) contacts with the up end of bracket (2), and the tail end and the articulated connection of bracket (2) of hydro-cylinder III (13), and the piston rod head end and the articulated connection of dolly (12) of hydro-cylinder III (13), buckle (15) are located the lower extreme of flange board (14), and the up end of buckle (15) and the lower terminal surface sliding friction contact of flange board (14), buckle (15) are fixed in on dolly (12) through connecting bolt (9).
3. The three-girder mobile formwork structure of claim 1, wherein: the bottom template driving device comprises a follow-up oil cylinder (17) and a positioning oil cylinder (18) which are vertically arranged on a cross beam I (10) or a cross beam II (8) respectively along the front-back direction, the lower ends of the follow-up oil cylinder (17) and the positioning oil cylinder (18) are hinged with the corresponding cross beam I (10) or the corresponding cross beam II (8), the head end of a piston rod of the follow-up oil cylinder is hinged with the lower end of the corresponding bottom template I (5) or the corresponding bottom template II (11), the outer side ends of the follow-up oil cylinder (17) and the positioning oil cylinder (18) are respectively provided with a base (16), the upper end of the base (16) is provided with a mechanical spiral top (6), the mechanical spiral top (6) is arranged above the mechanical spiral top (6), the mechanical spiral top (6) is connected with an ear plate (21), the outer side end of the ear plate (21) is hinged with the corresponding bottom template I (5) or the bottom template II (11, when base (16) are in vertical state, the lower extreme of base (16) is connected fixedly through bolt and crossbeam I (10) or crossbeam II (8) that correspond, the screw head end of mechanical spiral top (6) contacts with the lower extreme of corresponding bed die board I (5) or bed die board II (11), when mechanical spiral top (6) lower extreme does not be connected with bed die board I (5) or bed die board II (11) and follow-up hydro-cylinder (17) and location hydro-cylinder (18) drive bed die board and rise, base (16) outside rotation under the action of gravity, two bases (16) are the setting of splayed state.
4. The three-girder mobile formwork structure of claim 3, wherein: the device is characterized by further comprising a stabilizing frame (19) which is arranged between the two bases (16) of each bottom formwork driving device, the inner side ends of the two bases (16) are connected with the stabilizing frame (19) through bolts, and the upper end of the stabilizing frame (19) is hung below the corresponding bottom formwork I (5) or bottom formwork II (11) through a steel wire rope (20).
5. The three-girder mobile formwork structure of claim 3, wherein: the base (16) is composed of a plurality of cushion blocks which are stacked from top to bottom, and all the cushion blocks are connected and fixed through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010689505.9A CN111749138A (en) | 2020-07-17 | 2020-07-17 | Three-girder moving die frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010689505.9A CN111749138A (en) | 2020-07-17 | 2020-07-17 | Three-girder moving die frame structure |
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| Publication Number | Publication Date |
|---|---|
| CN111749138A true CN111749138A (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010689505.9A Pending CN111749138A (en) | 2020-07-17 | 2020-07-17 | Three-girder moving die frame structure |
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| CN (1) | CN111749138A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250087A (en) * | 2021-05-18 | 2021-08-13 | 山东恒堃机械有限公司 | Descending movable formwork suitable for door-shaped pier structure bridge |
-
2020
- 2020-07-17 CN CN202010689505.9A patent/CN111749138A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250087A (en) * | 2021-05-18 | 2021-08-13 | 山东恒堃机械有限公司 | Descending movable formwork suitable for door-shaped pier structure bridge |
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