CN209954935U - Demoulding device for internal mould of concrete box girder - Google Patents
Demoulding device for internal mould of concrete box girder Download PDFInfo
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- CN209954935U CN209954935U CN201920242921.7U CN201920242921U CN209954935U CN 209954935 U CN209954935 U CN 209954935U CN 201920242921 U CN201920242921 U CN 201920242921U CN 209954935 U CN209954935 U CN 209954935U
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Abstract
The utility model discloses a demoulding device for an inner mould of a concrete box girder, which comprises a left top mould, a left side mould, a left bottom mould, a left upper corner hydraulic support rod, a left lower support plate, a right top mould, a right side mould, a right bottom mould and a right upper corner hydraulic support rod; the inner mold is divided into a left part and a right part, each side mold is a part of movable whole, the traditional single-piece type complex splicing and welding are avoided, the connection mode of hinge and tongue-and-groove is adopted, the inclined hydraulic support rods and the movable inclined support plates are arranged on the left side and the right side, and the whole inner mold device is formed by utilizing a simple structural forming mode, namely a binary body. The utility model discloses guarantee the surface integrality of case roof beam inner surface concrete simultaneously on the firm basis of the case roof beam structure that the guarantee was made to the material resources activity duration of using manpower sparingly.
Description
Technical Field
The utility model relates to a road and bridge engineering field, concretely relates to shedder of concrete box girder centre form.
Background
The box girder is used for road and bridge engineering mostly, and inside is hollow form, and there is the edge of a wing upper portion both sides, similar case, divides structures such as single case, many cases. The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-place box girder. The prefabricated box girder combined bridge girder erection machine can be erected after the lower project is finished, so that the project progress can be accelerated, and the construction period can be saved; cast-in-place box girders are mostly used for large continuous bridges.
In the case roof beam manufacture process, the shaping of centre form relies on the centre form mould to realize, at first need with the installation of case roof beam centre form fixed, then utilize the concrete to pour, treat the concrete solidification back, the preparation that cast-in-place case roof beam can be accomplished to the drawing of patterns and take out the case roof beam centre form, but because the centre form height is less relatively, the mould inner space is narrow and small, the manual operation degree of difficulty is great when demolising, and is difficult for guaranteeing the inside concrete surface integrality of case roof beam, has reduced engineering efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can realize quick drawing of patterns case roof beam centre form shedder on the basis of guaranteeing case roof beam stable in structure and application method thereof guarantees the surface integrality of case roof beam internal surface concrete simultaneously on the basis that the case roof beam structure that the assurance was made is firm to use manpower sparingly material resources activity duration.
In order to achieve the purpose of the utility model, the utility model provides a technical scheme as follows:
the utility model provides a realize concrete box girder centre form shedder, comprises left top mould 1, left side mould 2, left die block 3, upper left corner hydraulic support pole 4, left lower support plate 5, right top mould 6, right side mould 7, right die block 8, upper right corner hydraulic support pole 9, right lower support plate 10 and trapezoidal bottom plate mould 11.
This shedder is divided into left half and right half, and left half and right half symmetrical arrangement, in the left half: between left side top mould 1 and left side mould 2, all through hinged joint between left side mould 2 and the left die block 3, be provided with semi-circular support free bearing on left side top mould 1 and the left side mould 2, be provided with upper left corner hydraulic support pole 4 between the semi-circular support free bearing, upper left corner hydraulic support pole 4 passes through hinged joint with semi-circular support free bearing, has arranged angle displacement sensor 19 and force sensor 20 through bluetooth wireless transmission on the upper left corner hydraulic support pole 4.
The right half structure is identical to the left half structure.
In the right half: between right top die 6 and right side die 7, right side die 7 and right bottom die 8
The upper right-hand hydraulic support rod is hinged with the upper right-hand hydraulic support rod 9, the upper right-hand hydraulic support rod 9 is hinged with the semicircular support hinged support, and an angular displacement sensor 19 and a force sensor 20 which are wirelessly transmitted through Bluetooth are arranged on the upper right-hand hydraulic support rod 9.
The end part of the left top die 1 is provided with a step-shaped staggered joint 17, the end part of the right top die is provided with a reversed step-shaped staggered joint 18, and the left top die 1 and the right top die 6 are spliced in a tongue-and-groove seam mode formed by the step-shaped staggered joint 17 and the reversed step-shaped staggered joint 18. The trapezoidal bottom plate mold 11 is clamped between the left bottom mold 3 and the right bottom mold 8 to form the lower part of the demolding device. Oblique supporting plate clamping grooves 13 are formed in the lower portion of the left side die 2 and the left bottom die 3, and the inner diameter of each oblique supporting plate clamping groove 13 is larger than the thickness of the left lower supporting plate 5.
The left side mould 2 and the left bottom mould 3 are provided with inclined supporting grooves 13, a left lower supporting plate 5 is placed in the inclined supporting grooves 13, and the right side and the left side are symmetrically arranged.
The utility model discloses before the steel reinforcement cage was put into to case roof beam centre form mould, the panel outside coating of centre form mould had the release agent.
Drawings
Fig. 1 is the schematic structural section of the concrete internal mold stripping device of the utility model.
Fig. 2 is the local enlarged schematic view of the hydraulic rod of the internal mold stripping device of the utility model.
Fig. 3 is a schematic diagram of the enlarged part of the tongue-and-groove joint of the inner mold stripping device of the utility model.
Fig. 4 is a schematic view of the local method of the trapezoidal bottom plate mold of the internal mold demolding device of the present invention.
Fig. 5 is a schematic cross-sectional view of the inner mold stripping device of the present invention in a supporting state.
Fig. 6 is a schematic cross-sectional view of the left top mold of the inner mold stripping device in a furled state.
Fig. 7 is a schematic cross-sectional view of the left half of the inner mold stripping device of the present invention in a completely closed state.
Detailed Description
The following will explain the inner mold stripping device of a concrete box girder in further detail with reference to the accompanying drawings and specific implementation processes to make the structural composition and the usage of the inner mold stripping device more clear.
The utility model relates to a concrete box girder centre form shedder, the inside case chamber of personally submitting the rectangle of case roof beam. As shown in fig. 1, the demolding device system comprises a left top mold 1, a left side mold 2, a left bottom mold 3, an upper left corner hydraulic support rod 4, a left lower support plate 5, a right top mold 6, a right side mold 7, a right bottom mold 8, an upper right corner hydraulic support rod 9, a right lower support plate 10 and a trapezoidal bottom plate mold 11.
An angular displacement sensor 19 and a force sensor 20 which wirelessly transmit data through Bluetooth are arranged on the hydraulic support rod. The left top die 1 and the left side die 2 are hinged together through a hinge base 16, and in addition, a left upper corner hydraulic support rod 4 is connected with the two die plates through a hinge base. The left side die 2 is hinged with the left bottom die 3 through a hinge seat 14, and is supported by an inclined support plate 5 positioned in an inclined support plate clamping groove 13, and the right side of the left side die is similar to the right side of the left bottom die. The left top die 1 and the right top die 6 on the upper part of the template device are spliced in a tongue-and-groove mode, the left bottom die 3 and the right bottom die 8 on the lower part of the template device are provided with a trapezoidal bottom template 11, and the inclined edges of the three are respectively aligned; and the middle parts of the outer sides of the left bottom die 3, the right bottom die 8 and the trapezoidal bottom plate die 11 are provided with traction rope holes 12, so that a winch is used for drawing out the die conveniently during die stripping. The right end of the left bottom die 3 and the left end of the right bottom die 8 are symmetrically provided with a top die end slot 15.
A demoulding method of a demoulding device for an internal mould of a concrete box girder comprises the following steps:
s1: the steel reinforcement cage is manufactured according to the design drawing of the box girder, the inner die is placed into the steel reinforcement cage from two ends respectively, and positioning and fixing are carried out according to the thickness of a protective layer required by the steel reinforcement cage.
S2: assembling the inner die mold: the right bottom die 8, the trapezoidal bottom plate die 11 and the left bottom die 3 are fixed firstly, then the hinged seat 14 is installed at the right end of the right bottom die 8, and the right lower supporting plate 10 is placed in the clamping groove of the inclined supporting plate after the right side die 7 is connected. A hinged support 16 is arranged at the upper end of the right side die 7 and connected with the right top die 6, a right upper corner hydraulic support rod 9 is connected to the hinged support on the inner side of the right side die 7 and the inner side of the right top die 6, the right top die 6 is in a horizontal state through adjusting a hydraulic rod, the right side of the inner die is assembled, the left side of the inner die is the same, and the state of a figure 1 is achieved after the installation is finished.
S3: and combining a conventional external mold, pouring concrete to manufacture the box girder, and removing the external mold of the box girder body after the concrete is finally set to reach the state shown in fig. 3.
S4: and (5) demolding the inner mold.
S4.1, adjusting the shrinkage of the left oblique hydraulic support rod 4 through the numerical value of the force sensor 20 obtained through wireless transmission, so that the left top die 1 is separated from the inner surface of the box girder, releasing the stress and achieving the state shown in FIG. 6.
And S4.2, connecting the rope to a traction rope hole 12 on the outer side of the trapezoidal bottom plate die 11, and drawing out the trapezoidal bottom plate die 11 by using a winch.
And S4.3, continuously controlling the left inclined hydraulic rod 4, and enabling the left inclined hydraulic rod to contract to a limit state by observing the numerical value of the angular displacement sensor 19.
S4.4 connect the rope to the left lower support plate 5, which is drawn out using a winch.
S4.5, the left side die 2 and the left top die 1 rotate clockwise around the left bottom hinge under the action of self gravity until the stepped staggered opening 17 at the right end of the left top die abuts against the stepped slot 15 of the left bottom die 3.
S4.6, connecting the rope to the left bottom die traction rope hole 12, drawing the left die out of the box girder by using a winch to complete the left seam demoulding process, and finishing the demoulding operation of the whole inner die by using the right part of the box girder in the same way.
It should be noted that the installation order of the inner die is opposite to the removal order, the right side is installed firstly during installation, and the left side is removed firstly during demolding.
Based on the above utility model discloses an in the mould shedder of concrete box girder has following technical advantage:
1. the utility model discloses an interior mode mould can divide into about two parts, but every side mould all is the whole of part activity, has avoided traditional monolithic complicated concatenation, welding, has adopted articulated and tongue-and-groove joint's connected mode to set up slant hydraulic support pole and mobile slant backup pad in the left and right sides, utilize simple structure composition form binary promptly to constitute whole centre form device. When the mold is disassembled, the hydraulic rod is only required to be contracted and the inclined supporting plate is pulled out, and the mold can be used for demolding by self weight.
2. The utility model discloses an centre form shedder utilizes the hydraulic stem to release concrete stress, has avoided the error that manual operation brought, has guaranteed the inside concrete surface integrality of case roof beam. An angular displacement sensor and a force sensor which are wirelessly transmitted through Bluetooth are arranged on the hydraulic rod, and wired data transmission is replaced. The internal force and the inclination angle of the template in the demolding process of the mold are monitored in real time, so that the demolding procedure is more accurate and convenient.
3. The left top die and the right top die are spliced by adopting the tongue-and-groove joint, and the left top die and the right top die have the following advantages:
(1) obviously reduce deformation, fissure of displacement, the hourglass thick liquid problem of template concatenation department, improve the quality of concreting.
(2) The splicing is convenient and quick, and the problem of untight seams is not easy to occur.
(3) The service life and the turnover frequency of the steel template are prolonged, so that the engineering benefit is more economic.
4. The bottom of the mould adopts a splicing mode of a trapezoidal bottom plate mould, and has the following advantages:
(1) and releasing the concrete stress at the lower part of the internal mold of the box girder and reducing the buoyancy of the concrete to the internal mold.
(2) The bottom concrete is convenient to pour, and the leakage of the bottom concrete is reduced to the greatest extent.
(3) The die is divided into a left part and a right part from the whole body, so that the die is convenient to demould.
5. The utility model discloses an interior mode mould is not limited to the length of case roof beam, can increase mould quantity according to the length of case roof beam, and a whole set of drawing of patterns mould can realize standardization, batch production.
Claims (4)
1. The utility model provides a concrete box girder centre form shedder which characterized in that: the device comprises a left top die (1), a left side die (2), a left bottom die (3), a left upper corner hydraulic support rod (4), a left lower support plate (5), a right top die (6), a right side die (7), a right bottom die (8), a right upper corner hydraulic support rod (9), a right lower support plate (10) and a trapezoidal bottom plate die (11);
this shedder is divided into left half and right half, and left half and right half symmetrical arrangement, in the left half: the device comprises a left top die (1), a left side die (2), a left bottom die (3), a left top die (1), a left side die (2), a left bottom die (2), a semicircular supporting hinged support, a left upper corner hydraulic support rod (4) arranged between the semicircular supporting hinged supports, the left upper corner hydraulic support rod (4) connected with the semicircular supporting hinged support through a hinge, and an angular displacement sensor (19) and a force sensor (20) which are wirelessly transmitted through Bluetooth arranged on the left upper corner hydraulic support rod (4);
the right half structure is the same as the left half structure;
in the right half: the right top die (6) is connected with the right side die (7), the right side die (7) is connected with the right bottom die (8) through hinges, semicircular supporting hinged supports are arranged on the right top die (6) and the right side die (7), an upper right corner hydraulic support rod (9) is arranged between the semicircular supporting hinged supports, the upper right corner hydraulic support rod (9) is connected with the semicircular supporting hinged supports through hinges, and an angular displacement sensor (19) and a force sensor (20) which are wirelessly transmitted through Bluetooth are arranged on the upper right corner hydraulic support rod (9);
the end part of the left top die (1) is provided with a step-shaped staggered joint (17), the end part of the right top die is provided with an inverted step-shaped staggered joint (18), and the left top die (1) and the right top die (6) are spliced in a tongue-and-groove manner through the step-shaped staggered joint (17) and the inverted step-shaped staggered joint (18); the trapezoidal bottom plate mold (11) is clamped between the left bottom mold (3) and the right bottom mold (8) to form the lower part of the demolding device; oblique supporting grooves (13) are arranged on the lower portion of the left side die (2) and the left bottom die (3), a left lower supporting plate (5) is placed in the oblique supporting grooves (13), and the right side and the left side are symmetrically arranged.
2. The concrete box girder inner mold stripping device according to claim 1, characterized in that: rope traction holes (12) are symmetrically formed in the side faces of the box girder bottom die and the trapezoidal bottom plate die (11), and therefore a winch can be used for pulling out the die through the rope traction holes (12) conveniently during demolding.
3. The concrete box girder inner mold stripping device according to claim 1, characterized in that: grooves (15) are symmetrically formed in the left bottom die and the right bottom die of the box girder, the diameter of each groove (15) is larger than the length of a rabbet joint of the step-shaped stagger (17) and the inverted step-shaped stagger (18), so that in the demolding process, the end part of the top die is clamped into the bottom die to form a closed triangle, and the stability is improved.
4. The concrete box girder inner mold stripping device according to claim 1, characterized in that: the inner diameter of the inclined supporting groove (13) is larger than the thickness of the left lower supporting plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920242921.7U CN209954935U (en) | 2019-02-26 | 2019-02-26 | Demoulding device for internal mould of concrete box girder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920242921.7U CN209954935U (en) | 2019-02-26 | 2019-02-26 | Demoulding device for internal mould of concrete box girder |
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| CN209954935U true CN209954935U (en) | 2020-01-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126082A (en) * | 2019-02-26 | 2019-08-16 | 北京市政路桥股份有限公司 | A kind of concrete box girder internal model stripper apparatus and release method |
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- 2019-02-26 CN CN201920242921.7U patent/CN209954935U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126082A (en) * | 2019-02-26 | 2019-08-16 | 北京市政路桥股份有限公司 | A kind of concrete box girder internal model stripper apparatus and release method |
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