CN114888931A - Box girder production system - Google Patents
Box girder production system Download PDFInfo
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- CN114888931A CN114888931A CN202210502516.0A CN202210502516A CN114888931A CN 114888931 A CN114888931 A CN 114888931A CN 202210502516 A CN202210502516 A CN 202210502516A CN 114888931 A CN114888931 A CN 114888931A
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- 238000009415 formwork Methods 0.000 description 40
- 230000002787 reinforcement Effects 0.000 description 19
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- 229910000831 Steel Inorganic materials 0.000 description 4
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
- B28B13/065—Removing the shaped articles from moulds by applying electric current or other means of discharging, e.g. pneumatic or hydraulic discharging means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
- B28B7/0032—Moulding tables or similar mainly horizontal moulding surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention discloses a box girder production system, and relates to the technical field of bridge engineering; the adopted technical scheme is as follows: the method comprises the following steps: a plurality of bottom die assemblies comprising a bottom die plate and a bottom die driver; the bottom die guide rail is used for supporting the bottom die assembly so as to drive the bottom die assembly to move along the length direction of the bottom die guide rail through the bottom die driver; the two-side die assembly comprises a side die plate and a side die driver, and the side die driver is used for driving the two-side die plate to be far away from or close to the bottom die plate; the two-end die assembly is detachably connected with the inner die assembly; the inner die assembly, the bottom die plate, the two side die plates and the two end die assemblies can enclose a box girder pouring die cavity. The invention can pour, maintain, stretch and transfer the box girder on a box girder production line, realize the production line type production of the box girder, also realize the uninterrupted use of the side mould assembly, the internal assembly and the end mould assembly, and improve the utilization rate of the box girder production mould, thereby improving the production efficiency of the box girder and ensuring the construction progress of the bridge.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a box girder production system.
Background
The box girder is a girder with hollow interior and flanges at two sides of the upper part; the box girder combined bridge girder erection machine prefabricated in the independent site can be erected after the lower project is completed, the project progress can be accelerated, and the construction period can be saved, so that the prefabricated reinforced concrete box girder can be widely applied to modern bridge construction.
In the prior art, when a reinforced concrete box girder is prefabricated, a plurality of prefabricated box girder molds are arranged in a prefabricated workshop in parallel, after a side mold and a bottom mold are erected, a reinforcement cage is transferred into a cavity of each prefabricated mold through hoisting equipment, and then an inner mold is erected inside the reinforcement cage for pouring; and after the concrete reaches the demolding strength, removing the inner mold and the side mold for subsequent maintenance and tensioning.
The inventor researches and discovers that in the prior art, when box girders are prefabricated, side molds and bottom molds are occupied before the box girders are transported to a transit car or a stock yard, the utilization rate of the molds is low, the production efficiency of the box girders is low, and the construction progress and the construction period of a bridge are influenced.
Disclosure of Invention
Aiming at the technical problem of low production efficiency caused by low utilization rate of the existing prefabricated box girder production mold; the invention provides a box girder production system which can improve the utilization rate of a box girder pouring mold, thereby improving the production efficiency of a box girder and ensuring the construction progress of a bridge.
The invention is realized by the following technical scheme:
a box girder production system comprising: a plurality of bottom die assemblies comprising a bottom die plate and a bottom die driver; the bottom die guide rail is used for supporting the bottom die assemblies so as to drive the bottom die assemblies to move along the length direction of the bottom die guide rail through the bottom die driver; the side die assemblies comprise side die plates and side die drivers, and the side die drivers are used for driving the two side die plates to be far away from or close to the bottom die plate; the inner die assembly is used for supporting the middle cavity of the box girder; the two end die assemblies are detachably connected with the side die assemblies; the inner die assembly, the bottom die plate, the side die plates and the die assemblies at two ends can enclose a box girder pouring die cavity.
When the side formwork driver is used, the side formwork driver drives the corresponding side formworks to approach the bottom formwork, and a space which is enclosed by the formworks at the two sides and the bottom formwork and is used for accommodating a steel reinforcement cage for producing a box girder is formed; after the reinforcement cage is placed into a space defined by the two side formworks and the bottom formwork according to a set position, placing the internal mold assembly into an internal space of the reinforcement cage according to the set position; respectively installing the two-end die assemblies to the corresponding end parts of the side die plates and the bottom die plate so as to enclose a box girder pouring die cavity through the bottom die plate, the two-side die plates, the inner die assembly and the two-end die assemblies; and injecting concrete into the box girder casting mold cavity through the concrete supply device so as to cast and form the box girder. And after the concrete reaches the demolding strength, removing the end mold assembly, the inner mold assembly and the two side templates to perform subsequent maintenance and tensioning, and finishing the production of the box girder.
During demolding, the side die drivers drive the side die plates to be far away from the bottom die plate to realize demolding of the side die plates, and the bottom die drivers drive the bottom die plate to enable the bottom die plate supporting the poured box girder to move out of a space between the two side die plates, so that the box girder is maintained and tensioned on the bottom die plate after pouring; after the maintenance and tensioning operations are finished, the bottom die driver can drive the bottom die plate to continuously move towards the direction away from the die plates on the two sides, so that the box girder is conveyed to a transfer workshop or a transfer yard.
And after the box girder after pouring is moved out of the space between the two side formworks, the other bottom formwork can be moved into the space between the two side formworks through the bottom formwork driver or other devices, and then the corresponding side formworks are driven by the side formwork driver to be close to the bottom formwork, so that the space which is surrounded by the two side formworks and the bottom formwork and used for accommodating a steel reinforcement cage for producing the box girder is formed, and the box girder pouring operation is repeated.
In conclusion, the pouring, maintenance, tensioning and transferring of the box girder can be realized on the same box girder production line by moving the movable bottom template, so that the production line type production of the box girder is realized; simultaneously, only occupy the die block board on whole production line, and the die block board interval is provided with a plurality ofly, can realize the incessant use of side form subassembly, inner assembly and end mould subassembly, improves the utilization ratio of case roof beam production mould. Therefore, the invention can improve the utilization rate of the box girder pouring mold, thereby improving the production efficiency of the box girder and ensuring the construction progress of the bridge.
In addition, in the prior art, a plurality of box girder molds are poured in parallel and maintained, tensioned and transported in situ, and a tensioning operation space and a transporting operation space need to be reserved at a pouring station; the plurality of bottom die assemblies are arranged at intervals along the length direction of the bottom die guide rail, so that the assembly line type production of the box girder is realized, and the pouring process, the maintenance process, the tensioning process and the transfer process of the box girder production are arranged along the length direction of the bottom die guide rail, so that the pouring operation space, the tensioning operation space and the transfer operation space are distributed along the length direction of the bottom die guide rail, and the floor area of the box girder production operation can be reduced.
In an alternative embodiment, the bottom mold drive includes a drive sheave that is engaged with the bottom mold guide. The driving grooved pulley is clamped on the bottom die guide rail, so that the bottom die assembly can be lifted away or hoisted to the bottom die guide rail through hoisting equipment while the bottom die plate can move along the length direction of the bottom die guide rail under the driving of the driver, and the bottom die assembly can be recycled conveniently.
In an optional embodiment, the length of the bottom die guide rail is greater than three times of the length of the bottom die plate, and at least three bottom die guide rails can be arranged on the bottom die guide rail at the same time, so that the pouring, maintenance and tensioning of the box girder can be realized at the same time.
In an optional embodiment, the side die assembly further comprises a side die guide rail, and the side die driver is a linear driver; one end of the side die driver is hinged to the side die guide rail, and the other end of the side die driver is hinged to the side die plate, so that the side die driver drives the side die plate to move along the length direction of the side die guide rail. The linear driver is adopted to drive the side die plate to move, the action is simple, the structure is simple, the control is simple, the structure and the control of the box girder production system can be simplified, and the reliability of the box girder production system is ensured.
In an optional embodiment, the side die guide rail is inclined along the length direction of the side die guide rail, and one end of the side die guide rail, which faces the bottom die plate, is higher than the other end of the side die guide rail. When the side die driver drives the side die plates to move, the side die plates can move obliquely downwards along the length direction of the side die guide rails, and the top of the box girder is provided with side wings; therefore, the side die guide rails can move downwards in an inclined mode to prevent the side die plates from damaging the side wings of the box girder during demolding.
In an optional embodiment, the side die assembly further comprises a side die support, the side die support is slidably arranged on the side die guide rail, and the side die driver is hinged to the side die support; the side form support is provided with a demolding driver, the side form plate is arranged on one side of the side form support, and the demolding driver is used for driving the side form plate to move in the width direction of the side form support. Before the side die driver drives the side die plates to move along the length direction of the side die guide rails, the side die driver drives the side die plates to move along the width direction of the box girder so as to perform demoulding, so that the side die drivers drive the side die plates to move obliquely downwards after the part of the box girder embedded in the side die plates is completely removed from the side die plates, and the side die plates are further prevented from damaging the side walls of the box girder during demoulding.
In an alternative embodiment, both the side die driver and the demolding driver are provided with displacement sensors. The displacement sensors are arranged on the side die driver and the demoulding driver, so that the displacement of the moving ends of the side die driver and the demoulding driver can be monitored in real time, the position of the side die plate relative to the side film guide rail is monitored in real time, and synchronous die closing or synchronous demoulding of the side die plate is facilitated. The synchronous compound die of both sides template can prevent to be asynchronous when closing because of both sides template for the side form of conflicting the die block board earlier pushes away the die block board to the tilt state, and then ensures the fashioned quality of box girder pouring. The synchronous drawing of patterns of both sides template can make the side bolster effect remove in step at the holding power that the case roof beam corresponds the lateral wall, avoids the case roof beam to rock at the drawing of patterns in-process.
In an alternative embodiment, the end die assembly includes an upper end die plate and a lower end die plate that are removably connected. The end die of the die cavity is poured to the box girder formed by the upper end die and the lower end die, so that the inner die assembly can be inserted and removed conveniently.
In an optional embodiment, the bottom die assemblies are arranged in multiple rows in parallel, so that multiple rows of box girders are produced simultaneously, and the production efficiency of the box girders is further improved.
In an optional embodiment, the device further comprises a travelling crane, and the length direction of the guide rail of the travelling crane is parallel to the length direction of the guide rail of the bottom die. The box girder is convenient to lift away from the bottom die plate to realize quick transfer of the box girder on the one hand; on the other hand is convenient for hang the bottom form after the use to between the both sides template, realizes the quick cyclic utilization of bottom form to ensure the production efficiency of case roof beam.
The invention has the following beneficial effects:
1. the box girder production system comprises a bottom mould plate, side mould plates, an inner mould assembly and two end mould assemblies, wherein the bottom mould plate, the side mould plates, the inner mould assembly and the two end mould assemblies can enclose a box girder pouring mould cavity; during demolding, the side die drivers drive the side die plates to be far away from the bottom die plate to realize demolding of the side die plates, and the bottom die drivers drive the bottom die plate to enable the bottom die plate supporting the poured box girder to move out of a space between the two side die plates, so that the box girder is maintained and tensioned on the bottom die plate after pouring is finished; after the maintenance and tensioning operations are completed, the bottom die driver can drive the bottom die plate to move continuously in the direction away from the die plates on the two sides so as to convey the box girder to a transfer workshop or a transfer yard, so that the pouring, maintenance, tensioning and transfer of the box girder can be realized on the same box girder production line, the production line type production of the box girder is realized, the production efficiency of the box girder is improved, and the construction progress of the bridge is ensured.
2. According to the box girder production system provided by the invention, after the box girder after pouring is moved out of the space between the two side formworks, the other bottom formwork can be moved into the space between the two side formworks through the bottom formwork driver or other devices, and then the corresponding side formworks are driven by the side formwork driver to be close to the bottom formwork, so that the space which is surrounded by the two side formworks and the bottom formwork and is used for accommodating a steel reinforcement cage for producing the box girder is repeated for pouring operation of the box girder, uninterrupted use of the side formwork assemblies, the internal assemblies and the end formwork assemblies can be realized, the utilization rate of the box girder production mould is improved, and the production efficiency of the box girder is further improved.
3. According to the box girder production system provided by the invention, the plurality of bottom mould assemblies are arranged at intervals along the length direction of the bottom mould guide rail, and the pouring process, the maintenance process, the tensioning process and the transfer process of box girder production are arranged along the length direction of the bottom mould guide rail, so that the pouring operation space, the tensioning operation space and the transfer operation space are distributed along the length direction of the bottom mould guide rail; in the prior art, a plurality of box girder molds are poured in parallel and maintained, tensioned and transported in situ, and a tensioning operation space and a transporting operation space need to be reserved at a pouring station; therefore, compared with the prior art, the invention can reduce the floor area of the box girder production operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a box girder production system in a front view after mold assembly according to an embodiment of the invention;
FIG. 2 is a schematic structural view of a box girder production system after demolding;
FIG. 3 is a schematic structural diagram of a bottom die assembly of the box girder production system according to the embodiment of the invention;
FIG. 4 is a schematic structural diagram of a side membrane assembly of the box girder production system according to the embodiment of the invention;
FIG. 5 is a schematic top view of a box girder production system according to an embodiment of the present invention;
fig. 6 is a flow chart of a production process of the box girder according to the embodiment of the invention.
Reference numerals: 100-bottom die assembly, 110-bottom die plate, 120-bottom die driver, 121-driving grooved wheel, 200-bottom die guide rail, 300-side die assembly, 310-side die plate, 320-side die driver, 330-side die guide rail, 340-side die support, 350-demolding driver, 400-traveling crane, 500-inner die assembly and 600-box girder pouring die cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like refer to orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that are conventionally used in the product of the present application, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are intended merely to facilitate the description of the present application and to simplify the description, but do not indicate or imply that the device or element that is referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present application.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "open," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Examples
With reference to fig. 1 and 2, a box girder production system includes: a plurality of bottom die assemblies 100, the bottom die assemblies 100 including a bottom die plate 110 and a bottom die driver 120; a bottom die guide rail 200, wherein the bottom die guide rail 200 is used for supporting a plurality of bottom die assemblies 100 so as to drive the bottom die assemblies 100 to move along the length direction of the bottom die guide rail 200 through the bottom die driver 120; the side die assemblies 300 comprise side die plates 310 and side die drivers 320, and the side die drivers 320 are used for driving the side die plates 310 to move away from or close to the bottom die plate 110; the inner die assembly 500, the inner die assembly 500 is used for supporting the middle cavity of the box girder; two end mold assemblies detachably connected to the side mold assemblies 300; the inner mold assembly 500, the bottom mold plate 110, the two side mold plates 310 and the two end mold assemblies can enclose a box girder pouring mold cavity 600.
In detail with reference to fig. 3, the bottom die driver 120 includes a driving sheave 121, the driving sheave 121 is clamped on the bottom die guide rail 200, and the driving sheave 121 is rotated by a rotation driver, such as an electric motor or a hydraulic motor. The driving grooved pulley 121 is clamped on the bottom die guide rail 200, so that the bottom die assembly 100 can be lifted away from or onto the bottom die guide rail 200 through the lifting device while the bottom die plate 110 can move along the length direction of the bottom die guide rail 200 under the driving of the driver, thereby facilitating the recycling of the bottom die assembly 100.
Preferably, the length of the bottom die guide rail 200 is greater than three times of the length of the bottom die plate 110, and at least three bottom die guide rails 200 can be simultaneously arranged, so that the pouring, maintenance and tensioning of the box girder can be simultaneously realized. Typically, the length of the bed die rail 200 is greater than five times the length of the bed plate 110 in order to increase the capacity of the maintenance station of the box beams and to facilitate removal of the box beams from the bed die rail 200. It should be understood that in actual use, the bottom die rails 200 are generally arranged in parallel with two, to ensure the smoothness of the movement of the bottom die assembly 100 on the bottom die rails 200.
Referring to fig. 4, the side mold assembly 300 further includes a side mold guide 330, and the side mold driver 320 is a linear driver; one end of the side die driver 320 is hinged to the side die guide rail 330, and the other end of the side die driver 320 is hinged to the side die plate 310, so that the side die plate 310 is driven by the side die driver 320 to move along the length direction of the side die guide rail 330. The linear driver is adopted to drive the side die plate 310 to move, the action is simple, the structure is simple, the control is simple, the structure and the control of the box girder production system can be simplified, and the reliability of the box girder production system is ensured. It is understood that the linear actuator may be an electric push rod, a motor-driven screw-slider mechanism, a pneumatic/hydraulic cylinder, etc., and in this embodiment, a hydraulic cylinder is used as the linear actuator.
Preferably, the side mold guide 330 is inclined along the length direction of the side mold guide 330, and one end of the side mold guide 330 facing the bottom mold plate 110 is higher than the other end of the side mold guide 330. When the side mold driver 320 drives the side mold plate 310 to move, the side mold plate 310 can move obliquely downwards along the length direction of the side mold guide rail 330, and the top of the box girder is provided with a side wing; therefore, the side mold rail 330 can be moved downward in an inclined direction to prevent the side mold plate 310 from damaging the side wings of the box girder during the mold release.
With continued reference to fig. 4, the side die assembly 300 further includes a side die support 340, the side die support 340 is slidably disposed on the side die guide rail 330, and the side die driver 320 is hinged to the side die support 340; the side die support 340 is provided with a demoulding driver 350, the side die plate 310 is arranged on one side of the side die support 340, and the demoulding driver 350 is used for driving the side die plate 310 to move along the width direction of the side die support 340. Before the side mold drivers 320 drive the side mold plates 310 to move along the length direction of the side mold rails 330, the side mold drivers 350 drive the side mold plates 310 to move along the width direction of the box girder so as to perform demolding, so that after the part of the box girder, which is embedded in the side mold plates 310, is completely removed from the side mold plates 310, the side mold drivers 320 drive the side mold plates 310 to move obliquely downwards, and further, the side mold plates 310 are prevented from damaging the side walls of the box girder during demolding.
Preferably, the side die driver 320 and the demolding driver 350 are provided with displacement sensors. The displacement sensors are arranged on the side die driver 320 and the demoulding driver 350, so that the displacement of the moving ends of the side die driver 320 and the demoulding driver 350 can be monitored in real time, the position of the side die plate 310 relative to the side die guide rail can be monitored in real time, and the synchronous die closing or synchronous demoulding of the side die plate 310 can be conveniently realized. The two side templates 310 are synchronously matched, so that the phenomenon that the two side templates 310 are asynchronous when matched is avoided, the side template 310 firstly abutted against the bottom template 110 pushes the bottom template 110 to be in an inclined state, and the pouring forming quality of the box girder is further ensured. Synchronous drawing of patterns of both sides template 310 can make the side bolster 310 effect remove in step at the holding power of the corresponding lateral wall of case roof beam, avoids the case roof beam to rock at the drawing of patterns in-process.
It will be appreciated that the end form assembly includes an upper end form and a lower end form that are removably connected. The end mold of the box girder pouring mold cavity 600 is formed by the upper end mold and the lower end mold, so that the inner mold assembly 500 can be inserted and removed conveniently.
In order to further improve the production efficiency of the box girder, referring to fig. 5, the bottom die assembly 100 is provided in parallel with a plurality of rows to simultaneously produce the plurality of rows of box girders. Correspondingly, the bottom die guide rail 200, the side die assembly 300, the inner die assembly 500 and the end die assembly are correspondingly provided with a plurality of groups.
It should be noted that, this embodiment further includes a traveling crane 400, and the length direction of the guide rail of the traveling crane 400 is parallel to the length direction of the bottom mold guide rail 200. The travelling crane 400 capable of moving along the length direction of the bottom die guide rail 200 is arranged, so that the box girder is conveniently lifted from the bottom die plate 110 to realize quick transfer of the box girder; on the other hand, the used bottom template 110 is conveniently hung between the templates 310 on the two sides, so that the bottom template 110 is quickly recycled, and the production efficiency of the box girder is ensured.
With reference to fig. 6, the process for producing the box girder using the present embodiment includes the following steps:
s1, driving the two side templates 310 to approach the bottom template 110 through the side template driver 320, and erecting the inner template assembly 500 and the end template assembly so as to enclose a box girder pouring mold cavity 600 through the inner template assembly 500, the bottom template 110, the two side templates 310 and the two end template assembly, wherein a box girder reinforcement cage is arranged in the box girder pouring mold cavity 600.
The step of enclosing the box girder casting mold cavity 600 includes steps S11-S17, which are as follows:
s11, moving the bottom mold plate 110 between the two side mold plates 310 by the crane 400;
s12, driving the two side templates 310 to approach the bottom template 110 through the side template driver 320 and the demolding driver 350, then cleaning the bottom template 110 and the side templates 310, spraying a demolding agent on the surfaces of the bottom template 110 and the side templates 310, and placing a bottom web reinforcement cage in a space surrounded by the bottom template 110 and the two side templates 310 according to a set position;
s13, connecting two lower end dies with the corresponding ends of the bottom die plate 110 and the side die plates 310;
s14, assembling the inner die assembly 500, and moving the inner die assembly 500 into the through groove at the upper end of the bottom web plate reinforcement cage;
s15, moving the top plate reinforcement cage to the upper end of the bottom web reinforcement cage to enclose the box girder reinforcement cage through the bottom web reinforcement cage and the top plate reinforcement cage;
and S16, connecting two upper end dies with the corresponding end parts of the bottom die plate 110 and the side die plates 310, wherein the lower end dies and the upper end surfaces form end die assemblies, so that the box girder pouring die cavity 600 is surrounded by the inner die assembly 500, the bottom die plate 110, the two side die plates 310 and the two end die assemblies.
S17, installing an upward floating prevention compression bar at the upper end of the box girder steel bar, wherein the lower end of the upward floating prevention compression bar props against the upper end of the internal mold assembly 500.
And S2, hoisting the concrete hopper through the pump truck or the travelling crane 400, and pouring concrete into the box girder pouring mold cavity 600.
And S3, after the concrete reaches the demolding strength, detaching the end mold assembly and the inner mold assembly 500, driving the two side molds to be far away from the bottom template 110 along the width direction of the bottom template 110 through the side mold driver 320, and completing demolding.
When demolding is performed, the side mold plate 310 is driven by the demolding driver 350 to move along the width direction of the bottom mold plate 110, and then the side mold plate 310 is driven by the side mold driver 320 to be far away from the bottom mold plate 110.
S4, after demolding, the bottom mold plate 110 is driven by the bottom mold driver 120 to move along the length direction of the bottom mold plate 110, so as to move the bottom mold plate 110 and the box girder blank on the bottom mold plate 110 out of the space between the two side mold plates 310.
It should be understood that the subsequent processes after demolding include maintenance, tension, beam lifting, pressure drop and anchor sealing, and in this embodiment, the method further includes steps S41-S43, specifically:
and S41, driving the bottom die to move along the length direction of the bottom die through the bottom die driver 120, and conveying the box girder blank moved out from between the two side die plates 310 to a maintenance station.
And S42, driving the bottom die to move along the length direction of the bottom die through the bottom die driver 120, and conveying the box girder blank after the maintenance is finished to a tensioning station.
And S43, lifting the tensioned box girder away from the bottom template 110 to lift the tensioned box girder to a transfer yard, and performing grouting and anchor sealing operation on the box girder to obtain a finished box girder.
And S5, moving the other bottom template 110 into the space between the two side templates 310, and repeating the steps to pour the next box girder.
The bottom template 110 lifted away from the box girder is lifted between the two side templates 310 by the crane 400, and the above steps are repeated, so that the recycling of the bottom template 110 can be realized.
In the embodiment, the side die drivers 320 drive the corresponding side die plates 310 to approach the bottom die plate 110, and a space for accommodating a reinforcement cage for producing the box girder is defined by the side die plates 310 and the bottom die plate 110; after the reinforcement cage is placed into the space defined by the two side templates 310 and the bottom template 110 according to the set position, placing the inner mold assembly 500 into the inner space of the reinforcement cage according to the set position; respectively installing the two-end die assemblies to the corresponding end parts of the side die plates 310 and the bottom die plate 110, so as to enclose a box girder pouring die cavity 600 through the bottom die plate 110, the two-side die plates 310, the inner die assembly 500 and the two-end die assemblies; the box girder casting mold 600 is filled with concrete by a concrete supplying device to cast form the box girder. After the concrete reaches the demolding strength, the end formwork assemblies, the inner formwork assemblies 500 and the two side formworks 310 are removed for subsequent maintenance and tensioning, and then the production of the box girder can be completed.
During demolding, the side die drivers 320 drive the side die plates 310 to be far away from the bottom die plate 110 to realize demolding of the side die plates 310, and the bottom die drivers 120 drive the bottom die plate 110 to enable the bottom die plate 110 supporting the box girder after pouring to move out of the space between the two side die plates 310, so that the box girder is maintained and tensioned on the bottom die plate 110 after pouring is finished; after the maintenance and tensioning operations are completed, the bottom die plate 110 is driven by the bottom die driver 120 to move further away from the two side die plates 310, so as to deliver the box girder to a transfer workshop or a transfer yard.
After the box girder after pouring is moved out of the space between the two side formworks 310, the box girder can be moved into the space between the two side formworks 310 through the bottom formwork driver 120 or the other bottom formwork 110 of the travelling crane 400, and then the corresponding side formworks 310 are driven by the side formwork driver 320 to be close to the bottom formwork 110, so that the space for accommodating a reinforcement cage for producing the box girder, which is surrounded by the two side formworks 310 and the bottom formwork 110, is repeated.
In summary, in the present embodiment, by moving the movable bottom mold plate 110, pouring, maintenance, tensioning, and transferring of the box girder can be realized on the same box girder production line, so as to realize the production line type production of the box girder; meanwhile, only the bottom template 110 is occupied on the whole production line, and the bottom template 110 is provided with a plurality of bottom templates at intervals, so that the side die assemblies 300, the internal assemblies and the end die assemblies can be used uninterruptedly, and the utilization rate of the box girder production die is improved. Therefore, the invention can improve the utilization rate of the box girder pouring mold, thereby improving the production efficiency of the box girder and ensuring the construction progress of the bridge.
In addition, in the prior art, a plurality of box girder molds are poured in parallel and maintained, tensioned and transported in situ, and a tensioning operation space and a transporting operation space need to be reserved at a pouring station; the plurality of bottom die assemblies 100 of the present embodiment are spaced along the length direction of the bottom die guide rail 200, so as to implement the production line type production of the box girder, and the pouring process, the maintenance process, the tensioning process, and the transfer process of the box girder production are disposed along the length direction of the bottom die guide rail 200, so that the pouring operation space, the tensioning operation space, and the transfer operation space are distributed along the length direction of the bottom die guide rail 200, and the floor area of the box girder production operation can be reduced.
The foregoing is only a preferred embodiment of the present invention, and the present invention is not limited thereto in any way, and any simple modification, equivalent replacement and improvement made to the above embodiment within the spirit and principle of the present invention still fall within the protection scope of the present invention.
Claims (10)
1. A box girder production system, comprising:
a plurality of bottom die assemblies (100), the bottom die assemblies (100) comprising a bottom die plate (110) and a bottom die drive (120);
the bottom die guide rail (200) is used for supporting the bottom die assembly (100) so as to drive the bottom die assembly (100) to move along the length direction of the bottom die guide rail (200) through the bottom die driver (120);
the side die assembly (300) comprises two side die plates (310) and a side die driver (320), and the side die driver (320) is used for driving the two side die plates (310) to be far away from or close to the bottom die plate (110);
an inner die assembly (500), the inner die assembly (500) being for supporting a box girder middle cavity;
the two end die assemblies are detachably connected with the side die assembly (300);
the inner die assembly (500), the bottom die plate (110), the side die plates (310) and the die assemblies at two ends can enclose a box girder pouring die cavity (600).
2. The box girder production system according to claim 1, wherein the counter die drive (120) comprises a drive sheave (121), the drive sheave (121) being snapped onto the counter die guide rail (200).
3. The box girder production system according to claim 1, wherein the length of the bed mold rail (200) is more than three times the length of the bed mold plate (110).
4. The box girder production system according to claim 1, wherein the side mold assembly (300) further comprises a side mold guide rail (330), the side mold driver (320) being a linear driver;
one end of the side die driver (320) is hinged to the side die guide rail (330), the other end of the side die driver (320) is hinged to the side die plate (310), so that the side die plate (310) can move along the length direction of the side die guide rail (330) through the driving of the side die driver (320).
5. The box girder production system of claim 4, wherein the side mold guide rails (330) are inclined in a length direction of the side mold guide rails (330), and one end of the side mold guide rails (330) facing the bottom form (110) is higher than the other end of the side mold guide rails (330).
6. The box girder production system according to claim 4, wherein the side die assembly (300) further comprises a side die bracket (340), the side die bracket (340) is slidably arranged on the side die guide rail (330), and the side die driver (320) is hinged with the side die bracket (340);
be provided with drawing of patterns driver (350) on side form support (340), side form board (310) set up side form support (340) one side, drawing of patterns driver (350) are used for the drive side form board (310) are followed side form support (340) width direction removes.
7. Box girder production system according to claim 6, wherein the side mould drives (320) and the demoulding drive (350) are each provided with a displacement sensor.
8. A box girder production system according to claim 1 wherein the end form assembly comprises upper and lower end forms which are releasably connected.
9. The box girder production system according to claim 1, wherein the bottom mold assemblies (100) are arranged in a plurality of rows in parallel.
10. The box girder production system according to any one of claims 1 to 9, further comprising a travelling crane (400), wherein the travelling crane (400) has a rail length direction parallel to the bed die rail (200) length direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210502516.0A CN114888931A (en) | 2022-05-10 | 2022-05-10 | Box girder production system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210502516.0A CN114888931A (en) | 2022-05-10 | 2022-05-10 | Box girder production system |
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| CN202210502516.0A Pending CN114888931A (en) | 2022-05-10 | 2022-05-10 | Box girder production system |
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