CN114147839B - Outer die template structure of large-scale prefabricated case roof beam - Google Patents

Outer die template structure of large-scale prefabricated case roof beam Download PDF

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Publication number
CN114147839B
CN114147839B CN202111396256.5A CN202111396256A CN114147839B CN 114147839 B CN114147839 B CN 114147839B CN 202111396256 A CN202111396256 A CN 202111396256A CN 114147839 B CN114147839 B CN 114147839B
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plate
bottom plate
plates
template
mounting
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CN114147839A (en
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丁威力
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Jiangsu Yueshengda Machinery Manufacturing Co ltd
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Jiangsu Yueshengda Machinery Manufacturing Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/0029Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/0002Auxiliary parts or elements of the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/0002Auxiliary parts or elements of the mould
    • B28B7/0014Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
    • B28B7/002Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps using magnets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00Moulds; Cores; Mandrels
    • B28B7/0029Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
    • B28B7/0055Mould pallets; Mould panels

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

The invention discloses an outer die template structure of a large-scale prefabricated box girder, which comprises a supporting base, a side outer die plate and an outer die bottom plate, wherein a connecting device is arranged between two ends of the outer die bottom plate and one end of the side outer die plate, the connecting device comprises two fixing plates and a connecting plate, extension plates are arranged on two ends of the connecting plate, inserting plates are arranged in the middle of the other ends of the extension plates far away from the connecting plate, and a plurality of fixing holes are arranged between the tops and the bottoms of the extension plates and the fixing plates. According to the invention, the distance between the side outer template and the outer mold bottom plate can be conveniently adjusted through the connecting device and the moving device, so that the use convenience is improved.

Description

Outer formwork structure of large-scale prefabricated box girder
Technical Field
The invention relates to the technical field of prefabricated box girder templates, in particular to an external mold template structure of a large-scale prefabricated box girder.
Background
The box girder is one of the middle girders in bridge engineering, has a hollow inner part, and flanges at two sides of the upper part, similar to a box, and is named. Single box, multi-box, etc.
The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-place box girder. The box girder prefabricated in the independent site can be erected after the lower project is finished by combining the bridge girder erection machine, 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. The common materials are divided into two main types, namely a prestressed reinforced concrete box girder and a steel box girder. The prestressed reinforced concrete box girder is constructed on site, and transverse prestress is arranged in some cases besides longitudinal prestress; the steel box girder is generally processed in a factory and then transported to a site for installation, and has an all-steel structure, and a part of reinforced concrete pavement layer is also added.
The steel box girder is also called steel plate box girder, and is a common structural form of a large-span bridge. Generally used on bridges with large span. The outer shape is like a box and is called a steel box girder.
The steel plate box girder is a structural form commonly adopted in engineering, which is to study the influence of the distance between the transverse clapboards on the distortion of a simply supported steel box girder under the action of concentrated load, the distortion effect and the rigid torsion effect of the simply supported steel box girder under the action of the concentrated load are compared by arranging the simply supported steel box girders with different numbers of transverse clapboards, the concentrated load is applied to the top end of a box girder web by a curve of the maximum distortion effect along with the change of the number of the transverse clapboards, and the calculation is carried out by adopting a load decomposition method according to four working conditions of distortion, rigid torsion, symmetric bending and eccentric load.
From the multi-ro bridge to the sutong bridge, from the gulf-sea bridge to the western optical-department bridge, the steel box girder is more and more widely used.
However, the existing external formwork structure of the large precast box girder has the following problems in the using process: because the outer die template of the existing prefabricated box girder is generally in a standard size, the template with nonstandard line width needs to be prefabricated in advance, so that the installation is time-consuming and the investment is large. Therefore, a corresponding technical scheme needs to be designed to solve the existing technical problems.
Disclosure of Invention
The invention aims to provide an outer die template structure of a large prefabricated box girder, which solves the technical problems that the installation is time-consuming and the investment is large because the existing outer die template of the prefabricated box girder is generally in a standard size and the template with nonstandard line width needs to be prefabricated in advance, improves the installation convenience, reduces the cost investment and meets the actual use requirement.
In order to achieve the purpose, the invention provides the following technical scheme: the connecting device comprises two fixing plates and a connecting plate, extension plates are arranged at two ends of the connecting plate, an inserting plate is arranged in the middle of the other end of each extension plate, which is far away from the connecting plate, and a plurality of fixing holes are formed between the top and the bottom of each extension plate and the fixing plates;
the side external mold comprises a side external mold plate and is characterized in that a moving device is arranged between the side of the side external mold plate, which is far away from the side external mold plate, and a supporting base, the moving device comprises a plurality of hydraulic cylinders and a plurality of moving base plates which are distributed at equal intervals, a fixed base plate is arranged between the tops of the hydraulic cylinders, two groups of guide rails are arranged at the top of the fixed base plate, driving wheels are arranged on two sides of the moving base plate, a supporting frame is arranged at the top of the moving base plate, two mounting plates are arranged on one side, facing the side external mold, of the supporting frame, a plurality of partition plates are arranged on the other side, far away from the side external mold, of the partition plates, a first mounting base plate is arranged on one side, facing the mounting plates, two groups of connecting base plates are symmetrically arranged on one side, which is the same as the partition plates, a movable clamping plate is arranged at the other end, far away from the first mounting base plate, a rotating mechanism is arranged between the movable clamping plate and the connecting base plate, a magnetic block is arranged at one end of the movable clamping plate, and two connecting holes are symmetrically arranged on the first mounting base plate.
As a preferred embodiment of the present invention, the cross section of the support base is a rectangular structure, a plurality of support columns are arranged between the top of the support base and the outer mold bottom plate, and a box girder is arranged between the outer mold bottom plate and the side outer mold plate.
As a preferred embodiment of the invention, a second installation bottom plate used in cooperation with the first installation bottom plate is arranged on the outer edge of the side outer template, two fixed clamping plates are symmetrically arranged on the other side of the second installation bottom plate far away from the second installation bottom plate, and clamping teeth are arranged on two sides of the fixed clamping plates.
As a preferred embodiment of the present invention, the second mounting plate and the side outer form are connected by bolts, the second mounting plate and the first mounting plate have the same size, the fixed clamping plate passes through the connecting hole, and the clamping teeth are composed of a plurality of triangular blocks and abut against the movable clamping plate.
As a preferred embodiment of the present invention, the fixing plate is respectively connected with the extension plate, the side outer template and the outer mold bottom plate through bolts, and the end of the side outer template and the end of the outer mold bottom plate, which are in contact with the extension plate, are provided with grooves used in cooperation with the fixing plate.
As a preferred embodiment of the present invention, the connecting plate is movably connected to the extension plate, the inserting plate is rectangular, and the side outer mold plate and the outer mold bottom plate are provided with a slot at one end facing the inserting plate.
As a preferred embodiment of the invention, the hydraulic cylinder is fixed on the supporting base, the cross section of the fixed bottom plate is of a rectangular structure, and one end of the guide rail is provided with a limiting block.
As a preferred embodiment of the present invention, the entire moving bottom plate is of a rectangular structure, the other end of the moving bottom plate, which is far away from the side outer form, is provided with a counterweight mechanism, the counterweight mechanism is specifically composed of a fixed column and a plurality of counterweights, the side of the moving bottom plate, which is close to the side outer form, is provided with a laser distance meter, and the middle of the side of the outer form bottom plate is provided with a quota and a feedback plate used by the laser distance meter.
As a preferred embodiment of the invention, the first mounting base plate is fixedly connected with the mounting plate in a welding manner, and the movable clamping plate is integrally in a rectangular structure; the other end far away from the rotating mechanism is of an inclined structure, the single connecting bottom plate group comprises two components which are symmetrically distributed, a return spring is arranged in the rotating mechanism, and the magnetic block is connected with the clamping teeth in a magnetic attraction manner.
Compared with the prior art, the invention has the following beneficial effects:
1. through the connecting device, the distance between the side outer template and the outer mold bottom plate can be conveniently adjusted, when the requirement on the use requirement is greater than the standard line width, the side outer template is moved to a certain distance through the moving device, then the two extension plates on the connecting plate are moved to proper distances from two ends, and finally the extension plates are placed between the side outer template and the outer mold bottom plate, the inserting plates are inserted into the slots in the side outer template and the outer mold bottom plate, and finally the extension plates, the side outer template and the outer mold bottom plate are fixed through the fixing plates, so that the phenomenon that customization is needed is avoided, the time is effectively saved, the input cost is reduced, the convenience in use is improved, and the problems that the installation is time-consuming and the input is large are solved.
2. Through the mobile device, can be convenient remove the outside template of inclining, be connected the outside template of inclining with the mounting panel, when needs remove, the drive wheel drives the removal bottom plate and removes, the drive wheel carries out lateral shifting on the guide rail, the effectual steady of having guaranteed the removal is decided, and simultaneously, through counter weight mechanism, can make wholly more stable, laser range finder on the removal bottom plate cooperates with the feedback board on the external mold bottom plate, the convenience is confirmed the distance of removing, the convenience of using for moving is improved, thereby solved the installation and taken time and drop into great problem comparatively.
3. Through mounting plate one and mounting plate two, can be convenient be connected the mounting panel with the side exterior sheathing, the connecting hole on mounting plate one is inserted to the fixed cardboard on the mounting plate two, links to each other and offsets through the magnetic path on the activity cardboard with the latch on the fixed cardboard after that, and then can be convenient connect it fixedly, has improved the convenience of dismouting to solved the installation and comparatively taken time and drop into great problem.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a view showing the construction of the connecting device according to the present invention;
FIG. 3 is a view of the structure of the fixing plate according to the present invention;
FIG. 4 is a block diagram of a mobile device according to the present invention;
FIG. 5 is a block diagram of a mounting plate according to the present invention;
fig. 6 is a second structural view of the mounting base plate according to the present invention.
In the drawing, a box girder-1, a side outer template-2, a moving device-3, a connecting device-4, a support column-5, an outer template base plate-6, a support base-7, a connecting plate-8, an extension plate-9, an inserting plate-10, a fixing hole-11, a fixing plate-12, a partition plate-13, a guide rail-14, a moving base plate-15, a driving wheel-16, a support frame-17, a fixing base plate-18, a hydraulic cylinder-19, a counterweight mechanism-20, a mounting plate-21, a laser range finder-22, a magnet-23, a movable clamping plate-24, a connecting base plate-25, a connecting hole-26, a rotating mechanism-27, a mounting base plate I-28, a fixing clamping plate-29, a clamping tooth-30 and a mounting base plate II-31.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: an external formwork structure of a large precast box girder, comprising: the connecting device comprises a supporting base 7, a side outer formwork 2 and an outer formwork bottom plate 6, wherein a connecting device 4 is arranged between two ends of the outer formwork bottom plate 6 and one end of the side outer formwork 2, the connecting device 4 comprises two fixing plates 12 and a connecting plate 8, extension plates 9 are arranged on two ends of the connecting plate 8, an inserting plate 10 is arranged in the middle of the other end of each extension plate 9 far away from the connecting plate 8, and a plurality of fixing holes 11 are formed between the top and the bottom of each extension plate 9 and the fixing plates 12;
a moving device 3 is arranged between the far side of the side outer template 2 and the supporting base 7, the moving device 3 comprises a plurality of hydraulic cylinders 19 and a moving bottom plate 15 which are distributed at equal intervals, a fixed bottom plate 18 is arranged between the tops of the hydraulic cylinders 19, two groups of guide rails 14 are arranged on the top of the fixed bottom plate 18, driving wheels 16 are arranged on two sides of the moving bottom plate 15, a supporting frame 17 is arranged on the top of the moving bottom plate 15, two mounting plates 21 are arranged on one side of the supporting frame 17 facing the side outer template 2, a plurality of partition plates 13 are arranged on the other side of the mounting plate 21 far away from the side outer template 2, a first mounting bottom plate 28 is arranged on one side facing the mounting plates 21, two groups of connecting bottom plates 25 are symmetrically arranged on one side of the first mounting bottom plates 28 which is the same as the partition plates 13, and a movable clamping plate 24 is arranged on the other end of the connecting bottom plates 25 far away from the first mounting bottom plates 28, a rotating mechanism 27 is arranged between the movable clamping plate 24 and the connecting bottom plate 25, a magnetic block 23 is arranged at one end of the movable clamping plate 24, two connecting holes 26 are symmetrically arranged on the first mounting bottom plate 28, the cross section of the supporting base 7 is of a rectangular structure, a plurality of supporting columns 5 are arranged between the top of the supporting base 7 and the outer die bottom plate 6, a box girder 1 is arranged between the outer die bottom plate 6 and the outer die plate 2, a second mounting bottom plate 31 matched with the first mounting bottom plate 28 for use is arranged on the outer edge of the outer die plate 2, two fixed clamping plates 29 are symmetrically arranged on the other side of the second mounting bottom plate 31 away from the second mounting bottom plate 31, clamping teeth 30 are arranged on two sides of the fixed clamping plates 29, the second mounting bottom plates 31 are connected with the outer die plate 2 through bolts, the second mounting bottom plate 31 and the first mounting bottom plate 28 have the same size, the fixed clamping plates 29 penetrate through the connecting holes 26, the clamping teeth 30 are formed by a plurality of triangular blocks and abut against the movable clamping plate 24, the fixed plate 12 is respectively connected with the extension plate 9, the side outer template 2 and the outer mold bottom plate 6 through bolts, grooves matched with the fixed plate 12 are formed in one ends, contacted with the extension plate 9, of the side outer template 2 and the outer mold bottom plate 6, the grooves are formed in the ends, used in a matched mode, of the side outer template 2 and the outer mold bottom plate 6, the grooves are formed in one ends, facing the insertion plates 10, of the side outer template 2 and the outer mold bottom plate 6, the insertion grooves are formed in the ends, used in a matched mode, of the side outer template 2 and the outer mold bottom plate 6, the hydraulic cylinder 19 is fixed to the supporting base 7, the cross section of the fixed bottom plate 18 is of a rectangular structure, a limiting block is arranged at one end of the guide rail 14, the movable bottom plate 15 is integrally of a rectangular structure, the movable bottom plate 15 is provided with a counterweight mechanism 20 at the other end far away from the side outer template 2, the counterweight mechanism 20 is composed of a fixed column and a plurality of counterweights, the laser range finder 22 is arranged on the side portion, a quota and a feedback plate used by the laser range finder 22 is arranged in the middle of the side portion of the outer template 6, a mounting bottom plate 28 is fixedly connected with the mounting plate 21 in a welding mode, and the movable clamping plate 24 is integrally of a rectangular structure; the other end far away from the rotating mechanism 27 is of an inclined structure, the single group of the connecting bottom plates 25 comprises two groups which are symmetrically distributed, a return spring is arranged in the rotating mechanism 27, the magnetic blocks 23 and the latch 30 are connected in a magnetic attraction mode, the distance between the outer side template 2 and the outer side bottom plate 6 can be conveniently adjusted through the connecting device 4 and the moving device 3, and the use convenience is improved.
When in use: according to the invention, firstly, the side external template 2 is connected with the mounting plate 21 through the mounting base plate II 31, the fixed clamping plate 29 on the mounting base plate II 31 is inserted into the connecting hole 26 on the mounting base plate I28, and then the fixed clamping plate is connected and abutted with the clamping teeth 30 on the fixed clamping plate 29 through the magnetic blocks 23 on the movable clamping plate 24, so that the side external template can be conveniently and fixedly connected, the convenience of disassembly and assembly is improved, when the side external template needs to be moved, the driving wheel 16 drives the movable base plate 15 to move, the driving wheel 16 transversely moves on the guide rail 14, the stability and stability of movement are effectively ensured, meanwhile, the whole body can be more stable through the counterweight mechanism 20, the laser range finder 22 on the movable base plate 15 is matched with the feedback plate on the external template base plate 6, the moving distance is conveniently determined, the convenience of moving use is improved, after the side external template moves to a specified distance, the two extension plates 9 on the connecting plate 8 to proper distances, finally the side external template 2 and the external template base plate 6 are placed between the side external template 2 and the external template base plate 6, the fixed through the fixed plate 12, the external template is finally, the convenient and convenient for use is reduced, and the cost is reduced, and the convenience of external template customization is effectively reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides an outer die template structure of large-scale precast box roof beam which characterized in that: the die comprises a supporting base (7), a side outer template (2) and an outer template base plate (6), wherein a connecting device (4) is arranged between two ends of the outer template base plate (6) and one end of the side outer template (2), the connecting device (4) comprises two fixing plates (12) and a connecting plate (8), extension plates (9) are arranged at two ends of the connecting plate (8), inserting plates (10) are arranged in the middle of the other ends of the extension plates (9) far away from the connecting plate (8), and a plurality of fixing holes (11) are arranged between the tops and bottoms of the extension plates (9) and the fixing plates (12);
a moving device (3) is arranged between the far side of the side outer template (2) and the supporting base (7), the moving device (3) comprises a plurality of hydraulic cylinders (19) and moving bottom plates (15) which are distributed at equal intervals, a fixed bottom plate (18) is arranged between the tops of the hydraulic cylinders (19), two groups of guide rails (14) are arranged at the top of the fixed bottom plate (18), driving wheels (16) are arranged on two sides of the moving bottom plate (15), a supporting frame (17) is arranged at the top of the moving bottom plate (15), two mounting plates (21) are arranged on one side of the supporting frame (17) facing the side outer template (2), a plurality of partition plates (13) are arranged on the other side of the mounting plate (21) far away from the side outer template (2), a first mounting plate (28) is arranged on one side of the partition plate (13), two groups of connecting bottom plates (25) are symmetrically arranged on one side of the first mounting plate (28) same with the partition plate (13), a movable magnetic block (24) is arranged on the other side of the connecting bottom plate (25) far away from the first mounting plate (28), a movable bottom plate (24) is connected with a movable bottom plate (24), and a rotating mechanism (27) is arranged on one end of the clamping plate (23), two connecting holes (26) are symmetrically formed in the first mounting base plate (28).
2. The external formwork structure of a large precast box girder according to claim 1, characterized in that: the cross section of the supporting base (7) is of a rectangular structure, a plurality of supporting columns (5) are arranged between the top of the supporting base (7) and the outer die bottom plate (6), and a box girder (1) is arranged between the outer die bottom plate (6) and the side outer template (2).
3. The external formwork structure of the large-scale precast box girder according to claim 2, characterized in that: and a second mounting base plate (31) matched with the first mounting base plate (28) for use is arranged on the outer edge of the side outer template (2), two fixing clamping plates (29) are symmetrically arranged on the other side, far away from the second mounting base plate (31), of the second mounting base plate (31), and clamping teeth (30) are arranged on two sides of each fixing clamping plate (29).
4. The outer die template structure of the large-scale precast box girder according to claim 3, characterized in that: the mounting base plate II (31) is connected with the lateral outer template (2) through bolts, the mounting base plate II (31) is the same as the mounting base plate I (28) in size, the fixed clamping plate (29) penetrates through the connecting hole (26), and the clamping teeth (30) are formed by a plurality of triangular blocks and abut against the movable clamping plate (24).
5. The external formwork structure of the large-scale precast box girder according to claim 1, characterized in that: the fixed plate (12) is respectively in bolt connection with the extension plate (9), the side outer template (2) and the outer mold bottom plate (6), and a groove body matched with the fixed plate (12) for use is arranged at one end of the side outer template (2) and the outer mold bottom plate (6) in contact with the extension plate (9).
6. The external formwork structure of a large precast box girder according to claim 1, characterized in that: be swing joint between connecting plate (8) and extension plate (9), picture peg (10) are the rectangle structure, side exterior sheathing (2) and external mold bottom plate (6) are equipped with the slot that the cooperation was used in the one end towards picture peg (10).
7. The external formwork structure of a large precast box girder according to claim 1, characterized in that: the hydraulic cylinder (19) is fixed on the supporting base (7), the cross section of the fixed bottom plate (18) is of a rectangular structure, and a limiting block is installed at one end of the guide rail (14).
8. The external formwork structure of a large precast box girder according to claim 1, characterized in that: the movable bottom plate (15) is integrally of a rectangular structure, a counterweight mechanism (20) is arranged at the other end, far away from the side outer template (2), of the movable bottom plate (15), the counterweight mechanism (20) is composed of a fixing column and a plurality of balancing weights, a laser range finder (22) is arranged on the side portion, close to the side outer template (2), of one end of the movable bottom plate (15), and a feedback plate used by a quota and the laser range finder (22) is arranged in the middle of the side portion of the outer mold bottom plate (6).
9. The external formwork structure of a large precast box girder according to claim 1, characterized in that: the mounting base plate I (28) is fixedly connected with the mounting plate (21) in a welding mode, and the movable clamping plate (24) is integrally rectangular; the other end far away from the rotating mechanism (27) is of an inclined structure, the single group of the connecting bottom plate (25) comprises two components which are symmetrically distributed, a return force spring is arranged in the rotating mechanism (27), and the magnetic block (23) is connected with the latch (30) in a magnetic attraction manner.
CN202111396256.5A 2021-11-23 2021-11-23 Outer die template structure of large-scale prefabricated case roof beam Active CN114147839B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111396256.5A CN114147839B (en) 2021-11-23 2021-11-23 Outer die template structure of large-scale prefabricated case roof beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111396256.5A CN114147839B (en) 2021-11-23 2021-11-23 Outer die template structure of large-scale prefabricated case roof beam

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Publication Number Publication Date
CN114147839A CN114147839A (en) 2022-03-08
CN114147839B true CN114147839B (en) 2023-01-17

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508239A1 (en) * 1975-02-26 1975-12-11
CN101244607A (en) * 2008-03-17 2008-08-20 中铁二局股份有限公司 Precast beam maintaining apparatus and maintaining method
CN109763428A (en) * 2019-01-16 2019-05-17 安徽鸿宇路桥工程有限公司 Box beam formwork
CN113618886A (en) * 2021-08-20 2021-11-09 刘炳书 Box girder template for municipal administration road and bridge construction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508239A1 (en) * 1975-02-26 1975-12-11
CN101244607A (en) * 2008-03-17 2008-08-20 中铁二局股份有限公司 Precast beam maintaining apparatus and maintaining method
CN109763428A (en) * 2019-01-16 2019-05-17 安徽鸿宇路桥工程有限公司 Box beam formwork
CN113618886A (en) * 2021-08-20 2021-11-09 刘炳书 Box girder template for municipal administration road and bridge construction

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