CN114833931B - Integrally-drawing type box girder internal mold and using method - Google Patents
Integrally-drawing type box girder internal mold and using method Download PDFInfo
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- CN114833931B CN114833931B CN202210652357.2A CN202210652357A CN114833931B CN 114833931 B CN114833931 B CN 114833931B CN 202210652357 A CN202210652357 A CN 202210652357A CN 114833931 B CN114833931 B CN 114833931B
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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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- 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
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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Abstract
The invention relates to the technical field of precast box girder equipment, and provides an integral drawing type box girder internal mold which comprises an upper template, a lower template, a left template and a right template; the box girder inner film forming device comprises a plurality of groups of driving assemblies arranged inside a box girder inner film, wherein each driving assembly comprises a main bearing shaft which is connected with a fixed shell in each driving assembly, a driving shaft is arranged at one end of each driving shaft, and the driving shafts are driven by the driving members to drive an upper template, a lower template, a left template and a right template to be mutually connected to form an isosceles trapezoid-shaped box girder inner film; the invention aims to provide an integral drawing type box girder inner mold without adopting a hydraulic system, which greatly improves the reliability, reduces the influence of the external environment and enlarges the use scene.
Description
Technical Field
The invention relates to the technical field of prefabricated box girder equipment, in particular to an integral drawing type box girder internal mold and a using method thereof.
Background
In the precast box girder, the inner membrane is generally installed or removed in a manual assembly mode, so that the operation is inconvenient and a large amount of waste is generated; for the prefabricated small box girder pouring of more than 25m span, there is the inner membrance that adopts the pull formula, as the publication is: CN 111421656A, which discloses an integral drawing small box girder hydraulic internal mold and a mold-retracting method; utilize the hydraulic system of multiunit to control drawing in of side form board, die block board and top form board to reach the purpose of swift retrieving, but there is the control of 12 pneumatic cylinders of group at least in a section inner membrance, hydraulic system need guarantee simultaneously that sufficient is sealed, guarantees 12 pneumatic cylinders of group simultaneously and all is normal work, and entire system operation is still more troublesome, goes wrong simultaneously easily, if: the leakage of hydraulic oil can cause the environmental pollution of whole precast beam field, moreover, the requirement to hydraulic system is also higher in some northern cold weather, so the applicant proposes a whole pull formula case roof beam centre form that does not adopt hydraulic system, and whole equipment can not produce the waste material, can not have the pollutant to appear simultaneously, and is energy-concerving and environment-protective.
Disclosure of Invention
The invention aims to provide an integral drawing type box girder inner mold without adopting a hydraulic system, which greatly improves the reliability, reduces the influence of the external environment and enlarges the use scene.
The embodiment of the invention is realized by the following technical scheme: an integral drawing type box girder internal mold comprises an upper template, a lower template, a left template and a right template; the upper template, the lower template, the left template and the right template are mutually jointed to form an isosceles trapezoid one-section box girder inner membrane; further comprising: the box girder inner film structure comprises a box girder inner film, a plurality of groups of driving assemblies, a plurality of groups of supporting assemblies and a plurality of groups of supporting assemblies, wherein each group of driving assemblies is provided with an upper supporting rod for supporting an upper template, a lower supporting rod for supporting a lower template, a left supporting rod for supporting a left template, a right supporting rod for supporting a right template, a first gear for controlling the movement of the upper supporting rod and the lower supporting rod, and a second gear for controlling the movement of the left supporting rod and the right supporting rod; the upper supporting rod, the lower supporting rod, the left supporting rod and the right supporting rod can only move along the length direction of the upper supporting rod, the lower supporting rod, the left supporting rod and the right supporting rod; each group of driving components is also provided with a fixed shell which is used for limiting the movement direction of the upper supporting rod, the lower supporting rod, the left supporting rod and the right supporting rod; the main bearing shaft is connected with the fixed shell in each driving assembly; a drive shaft including a first drive shaft and a second drive shaft, the drive assembly further including: the first driving shaft is in driving connection with the first gear, and the second driving shaft is in driving connection with the second gear; the first gear is used for driving the upper supporting rod and the lower supporting rod to move, and the second gear is used for driving the left supporting rod and the right supporting rod to move; one end of the driving shaft is provided with a driving piece.
Furthermore, a first rotating ring and a second rotating ring which are coaxially arranged are also arranged, and a first complete plane thread is arranged on one side of the first rotating ring facing the second rotating ring; one side of the second rotating ring, which faces the first rotating ring, is provided with a second complete plane thread; a first internal gear is arranged at the inner ring of the first rotating ring, and a second internal gear is arranged at the inner ring of the second rotating ring; the first internal gear is meshed with the first gear, and the second internal gear is meshed with the second gear; be equipped with the sliding component of 4 groups between first rotatory ring and the second rotatory ring, every group sliding component includes: the first side of the first sliding block and the first side of the second sliding block are attached, the second side of the first sliding block is provided with a first incomplete plane thread which is engaged with the first complete plane thread, and the second side of the second sliding block is provided with a second incomplete plane thread which is engaged with the second complete plane thread; the fixed shell is connected with the main bearing shaft, the fixed shell is completely wrapped on the first rotating ring and the second rotating ring, and the first rotating ring and the second rotating ring are arranged in the fixed shell in a rotating mode around the main bearing shaft; the sliding assembly penetrates through the fixed shell, the main bearing shaft penetrates through the fixed shell, and the driving shaft penetrates through the fixed shell; the upper supporting rod is connected with a first sliding block in the first group of sliding assemblies, the lower supporting rod is connected with a first sliding block in the third group of sliding assemblies, the left supporting rod is connected with a second sliding block in the fourth group of sliding assemblies, and the right supporting rod is connected with a second sliding block in the second group of sliding assemblies.
Further, still be equipped with the support, the support setting is in the outside of a section inner membrance and for spacing main bearing axle, first drive shaft and second drive shaft.
Further, the upper template is a plane template; the upper supporting rod is fixedly connected with the upper template; the lower template includes: the movable mould comprises a first movable mould plate, a second movable mould plate and a first fixed mould plate, wherein one end of the first movable mould plate is hinged with the first end of the first fixed mould plate, one end of the second movable mould plate is hinged with the second end of the first fixed mould plate, the end part of a lower supporting rod is connected with a lower connecting block, the first end of the lower connecting block is hinged with the first movable mould plate through a first connecting rod, and the second end of the lower connecting block is hinged with the second movable mould plate through a second connecting rod; the left template is an L-shaped template; the left support rod is fixedly connected with the left template, and the left support rod forms an alpha angle with the horizontal plane, wherein alpha is more than 30 degrees and less than 60 degrees; the right template is an L-shaped template; the right supporting rod is fixedly connected with the right template and forms an alpha angle with the horizontal plane, and alpha is more than 30 degrees and less than 60 degrees.
Furthermore, a first limiting block is arranged at the joint of the left template and the first movable template, a first limiting groove matched with the limiting block is arranged at the joint of the first movable template and the left template, and the first limiting block is embedded into the first limiting groove after the upper template, the lower template, the left template and the right template are completely unfolded and mutually connected; the junction of right template and second movable mould board is equipped with the second stopper, and the junction of second movable mould board and right mould board is equipped with the second spacing groove with stopper looks adaptation, and the second stopper imbeds in the second spacing groove after cope match-plate pattern, lower bolster, left template and right mould board expand each other completely and link up.
Further, the upper die plate includes: the movable mould comprises a third movable mould plate, a fourth movable mould plate and a second fixed mould plate, wherein one end of the third movable mould plate is hinged with the first end of the second fixed mould plate, one end of the fourth movable mould plate is hinged with the second end of the second fixed mould plate, the end part of an upper supporting rod is connected with an upper connecting block, the first end of the upper connecting block is hinged with the third movable mould plate through a first connecting rod, and the second end of the upper connecting block is hinged with the fourth movable mould plate through a second connecting rod; the lower template includes: the movable mould comprises a first movable mould plate, a second movable mould plate and a first fixed mould plate, wherein one end of the first movable mould plate is hinged with the first end of the fixed mould plate, one end of the second movable mould plate is hinged with the second end of the fixed mould plate, the end part of a lower supporting rod is connected with a lower connecting block, the first end of the lower connecting block is hinged with the first movable mould plate through a first connecting rod, and the second end of the lower connecting block is hinged with the second movable mould plate through a second connecting rod; the left template is an I-shaped template; the left support rod is fixedly connected with the left template; the right template is an I-shaped template; the right supporting rod is fixedly connected with the right template.
Furthermore, a first limiting block is arranged at the joint of the bottom of the left template and the first movable template, a first limiting groove matched with the limiting block is arranged at the joint of the bottom of the first movable template and the bottom of the left template, and the first limiting block is embedded into the first limiting groove after the upper template, the lower template, the left template and the right template are completely unfolded and mutually connected; a second limiting block is arranged at the joint of the bottom of the right template and the second movable template, a second limiting groove matched with the limiting block is arranged at the joint of the bottom of the second movable template and the bottom of the right template, and the second limiting block is embedded into the second limiting groove after the upper template, the lower template, the left template and the right template are completely unfolded and mutually connected; a third limiting block is arranged at the joint of the top of the left template and the third movable template, a third limiting groove matched with the limiting block is arranged at the joint of the top of the third movable template and the top of the left template, and the third limiting block is embedded into the third limiting groove after the upper template, the lower template, the left template and the right template are completely unfolded and mutually connected; and a fourth limiting block is arranged at the joint of the top of the right template and the fourth movable template, a fourth limiting groove matched with the limiting block is arranged at the joint of the top of the fourth movable template and the top of the right template, and the fourth limiting block is embedded into the fourth limiting groove after the upper template, the lower template, the left template and the right template are completely unfolded and mutually linked.
Further, the first side of the first sliding block and the first side of the second sliding block are connected through a dovetail sliding groove structure.
Furthermore, the bottom of the support is provided with a lifting mechanism.
The use method of the integral drawing type box girder inner mold comprises the following steps:
s1: starting a driving piece to drive a second driving shaft to rotate so as to prop the left template and the right template open; then driving a first driving shaft to rotate, and opening the upper template and the lower template; the expanded box girder inner mold is fixedly connected to the bracket through the main bearing shaft;
s2: binding steel bars, pre-burying a corrugated pipe, installing an outer mold and pouring concrete;
s3: after pouring is completed, a driving piece is started to drive a first driving shaft to rotate, and an upper template and a lower template are folded; then, driving a second driving shaft to rotate, and gathering the left template and the right template; the folded box girder inner mold is fixedly connected to the bracket through a main bearing shaft;
s4: and laying a steel wheel plate at the bottom of the lower template, dismantling the support, and pulling out the box girder inner membrane from the box girder.
The technical scheme of the invention at least has the following advantages and beneficial effects:
the bearing device has the advantages that 1, the main bearing shaft is used as a main supporting piece, and meanwhile, a plurality of groups of gear transmission forms are used as supporting power pieces, so that the reliability is greatly improved, the influence of the external environment is reduced, and the use scene is enlarged.
2, the whole inner membrane can be folded by only driving the driving shaft, and then the inner membrane is directly drawn out by using equipment of a winch, so that the efficiency of working and prefabricating the box girder is greatly improved while the inner membrane does not need to manually enter the inside of the box girder for dismounting and mounting work.
Compared with a process of assembling for installation by multiple jobs, the process has the advantages that waste materials are not generated during sequential molding, and the cost is saved; compared with a liquid system, the problem of hydraulic oil leakage is avoided, and pollution is reduced; the electric vehicle can be driven only by electric power, and is energy-saving, environment-friendly and high in economic benefit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a first structural schematic view of an integral drawing type box girder inner mold provided in embodiment 1;
fig. 2 is an expanded schematic view of a second structure of the inner mold of the integral drawing type box girder provided in embodiment 1;
fig. 3 is a schematic view of a furled upper template and a furled lower template of a second structure of the integral pull type box girder inner die provided in embodiment 1;
fig. 4 is a fully-folded schematic view of a second structure of an inner mold of an integrally-drawn box girder provided in embodiment 1;
fig. 5 is a front axial-side schematic view of a driving assembly in a second structure of the integrally-drawn box girder inner mold provided in embodiment 1;
fig. 6 is a rear side axial view of the driving assembly in the second structure of the integrally-drawn box girder inner mold provided in embodiment 1;
fig. 7 is a schematic front axial internal structure diagram of a driving assembly in a second structure of an integral drawing type box girder inner mold provided in embodiment 1;
fig. 8 is a schematic view of the internal structure of the back side shaft side of the driving assembly in the second structure of the integrally-drawn box girder inner mold provided in embodiment 1;
fig. 9 is a schematic view of a second structural driving structure of the inner mold of the integrally-drawn box girder provided in embodiment 1;
fig. 10 is an expanded schematic view of a second structure of the inner mold of the integral drawing type box girder provided in embodiment 2;
fig. 11 is a schematic view of a furled upper template and a furled lower template of a second structure of the integral drawing type box girder inner mold provided in embodiment 2;
fig. 12 is a fully-closed schematic view of a second structure of the inner mold of the integral pull type box girder provided in embodiment 2;
icon: 100-box girder, 1-upper die plate, 11-second fixed die plate, 12-third movable die plate, 13-fourth movable die plate, 2-lower die plate, 21-first fixed die plate, 22-first movable die plate, 23-second movable die plate, 3-upper support rod, 4-lower support rod, 5-left support rod, 6-right support rod, 7-left die plate, 8-right die plate, 41-lower connection block, 31-upper connection block, 200-drive assembly, 101-stationary housing, 104-main bearing shaft, 105-first drive shaft, 106-second drive shaft, 102-first slide block, 103-second slide block, 1021-first incomplete planar thread, 1031-second incomplete planar thread, 1051-first gear, 1061-second gear, 111-first rotating ring, 112-first internal gear, 113-limit circular ring, 114-first complete planar thread, 121-second internal gear, 122-second internal gear, 124-second complete planar thread, 300-support, 400-driving member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example 1
In this embodiment, as shown in fig. 2, an internal mold of an integrally drawn box girder 100 is mainly disclosed, which comprises an upper template 1, a lower template 2, a left template 7 and a right template 8; the upper template 1, the lower template 2, the left template 7 and the right template 8 are mutually jointed to form an inner film 100 of an isosceles trapezoid one-section box girder; it should be noted that the upper template 1, the lower template 2, the left template 7 and the right template 8 are not limited at all, in this embodiment, the inner film of the box girder 100 is an isosceles trapezoid, and according to the design standard, the inner film of the box girder 100 may have various types as long as the upper template 1, the lower template 2, the left template 7 and the right template 8 meet the design standard.
In the present embodiment, the main invention is that the upper template 1, the lower template 2, the left template 7 and the right template 8 are driven to be connected with each other to form an isosceles trapezoid driving assembly 200, it is to be noted that, as shown in fig. 9, the driving assembly 200 is provided with a plurality of groups, generally, for a small box girder 100 with a length of 25m, at least 3 driving assemblies 200 are required, each driving assembly 200 is arranged inside an inner film of the box girder 100, each group of driving assemblies 200 is provided with an upper supporting rod 3 for supporting the upper template 1, a lower supporting rod 4 for supporting the lower template 2, a left supporting rod 5 for supporting the left template 7, a right supporting rod 6 for supporting the right template 8, a first gear 1051 for controlling the movement of the upper supporting rod 3 and the lower supporting rod 4, and a second gear 1061 for controlling the movement of the left supporting rod 5 and the right supporting rod 6; the upper supporting rod 3, the lower supporting rod 4, the left supporting rod 5 and the right supporting rod 6 can only move along the length direction; each group of driving assemblies 200 is further provided with a fixed shell 101, and the fixed shell 101 is used for limiting the movement direction of the upper supporting rod 3, the lower supporting rod 4, the left supporting rod 5 and the right supporting rod 6; the device is also provided with a main bearing shaft 104 and a driving shaft, wherein the main bearing shaft 104 is connected with the fixed shell 101 in each driving assembly 200 to play a main supporting role, and all 3 driving assemblies 200 are supported by one main bearing shaft 104; the drive shaft comprises a first drive shaft 105 and a second drive shaft 106, the drive assembly 200 further comprising: a first gear 1051 and a second gear 1061, a first drive shaft 105 drivingly connected to the first gear 1051, and a second drive shaft 106 drivingly connected to the second gear 1061; the first gear 1051 is used for driving the upper support rod 3 and the lower support rod 4 to move, and the second gear 1061 is used for driving the left support rod 5 and the right support rod 6 to move; a driving member 400 is provided at one end of the driving shaft; the driving member 400 is not limited, and generally driven by a motor, a link mechanism or a lever, and all the above manners should be understood by those skilled in the art.
It should be noted that, in some embodiments, as shown in fig. 1, a large-sized cylindrical gear plate (a first gear 1051) is used to drive a spur rack to control the movement of the upper support rod 3 and the lower support rod 4, and a large-sized cylindrical gear plate (a second gear 1061) is used to drive a spur rack to control the movement of the left support rod 5 and the right support rod 6, but in this way, there is a drawback that: the load of the box girder 100 is large, and a locking mechanism needs to be provided in order to have enough supporting strength.
However, in this embodiment, the following arrangement is adopted, so that the arrangement of the locking mechanism is avoided, the mechanism is optimized, and the reliability is improved, specifically: as shown in fig. 5,6,7 and 8, a first rotating ring 111 and a second rotating ring 121 are coaxially arranged, and a first complete plane thread 114 is arranged on one side of the first rotating ring 111 facing the second rotating ring 121; the second rotating ring 121 is provided with a second perfectly flat thread 124 on the side facing the first rotating ring 111; a first internal gear 112 is arranged at the inner ring of the first rotating ring 111, and a second internal gear 122 is arranged at the inner ring of the second rotating ring 121; first internal gear 112 meshes with first gear 1051, and second internal gear 122 meshes with second gear 1061; between the first rotating ring 111 and the second rotating ring 121 there are provided 4 sets of sliding assemblies, each set comprising: a first sliding block 102 and a second sliding block 103, wherein a first side of the first sliding block 102 is attached to a first side of the second sliding block 103, a second side of the first sliding block 102 is provided with a first incomplete plane thread 1021 engaged with the first complete plane thread 114, and a second side of the second sliding block 103 is provided with a second incomplete plane thread 1031 engaged with the second complete plane thread 124; the fixed casing 101 is connected with the main bearing shaft 104, the fixed casing 101 is completely wrapped around the first rotating ring 111 and the second rotating ring 121, the sliding assembly is arranged through the fixed casing 101, the main bearing shaft 104 is arranged through the fixed casing 101, the driving shaft is arranged through the fixed casing 101, it is noted that the fixed casing is completely included with the outer sides of the first rotating ring and the second rotating ring, as shown in fig. 5 and 6, but is partially unfolded for showing the internal structure, as shown in fig. 7 and 8; specifically, a limit ring 113 is arranged on one side of the first rotating ring 111 away from the second rotating ring 121, a limit ring groove is arranged on the fixed shell 101, and the first rotating ring 111 rotates around the main bearing shaft 104 in the fixed shell 101 through the matching of the limit ring 113 and the limit ring groove; the second rotating ring 121 is also arranged in this way; the upper support rod 3 is connected with a first sliding block 102 in the first group of sliding assemblies, the lower support rod 4 is connected with a first sliding block 102 in the third group of sliding assemblies, the left support rod 5 is connected with a second sliding block 103 in the fourth group of sliding assemblies, and the right support rod 6 is connected with a second sliding block 103 in the second group of sliding assemblies.
The working process is as follows: as shown in fig. 2,3 and 4, the driving member 400 drives the first driving shaft 105 to rotate, so as to drive the first gear 1051 to rotate, the first gear 1051 drives the first rotating ring 111 to rotate, and due to the limit of the housing, the first full-plane thread 114 and the first incomplete-plane thread 1021 are engaged, so that the first rotating ring 111 will drive the 4 first sliding blocks 102 in the 4 sets of sliding assemblies to move outwards or inwards, where the outwards value is the axial direction away from the main load-bearing shaft 104; similarly, the driving member 400 drives the second driving shaft 106 to rotate, so as to drive the second gear 1061 to rotate, the second gear 1061 drives the second rotating ring 121 to rotate, and due to the limitation of the housing, the second full-plane thread 124 is engaged with the second incomplete-plane thread 1031, so that the second rotating ring 121 can drive the 4 second sliding blocks 103 in the 4 sets of sliding assemblies to move outwards or inwards; at this time, the upper support rod 3 is connected with a first slide block 102 in the first group of slide assemblies, the lower support rod 4 is connected with a first slide block 102 in the third group of slide assemblies, the left support rod 5 is connected with a second slide block 103 in the fourth group of slide assemblies, and the right support rod 6 is connected with a second slide block 103 in the second group of slide assemblies; the control of the movement of the upper support bar 3 and the lower support bar 4 by the first drive shaft 105 and the control of the movement of the left support bar 5 and the right support bar 6 by the second drive shaft 106 are also completed; then, due to the transmission relationship of the flat threads, when the upper support bar 3 or the support bar receives an inward load, the reverse rotation of the first rotating ring 111 or the second rotating ring 121 is not driven reversely, and the arrangement of the locking member is reduced, that is, only the first drive shaft 105 and the second drive shaft 106 can drive the first rotating ring 111 and the second rotating ring 121.
Further, in this embodiment, a bracket 300 is further provided, and the bracket 300 is disposed outside a section of the inner film and is used for limiting the main bearing shaft 104, the first driving shaft 105 and the second driving shaft 106 to keep them in a relatively fixed direction, and the first driving shaft and the second driving shaft can only rotate around their own axes.
Further, in the present embodiment, as shown in fig. 2,3, and 4, the upper plate 1 includes: the movable formwork comprises a third movable formwork 12, a fourth movable formwork 13 and a second fixed formwork 11, wherein one end of the third movable formwork 12 is hinged with the first end of the second fixed formwork 11, one end of the fourth movable formwork 13 is hinged with the second end of the second fixed formwork 11, the end part of the upper supporting rod 3 is connected with an upper connecting block 31, the first end of the upper connecting block 31 is hinged with the third movable formwork 12 through a first connecting rod, and the second end of the upper connecting block 31 is hinged with the fourth movable formwork 13 through a second connecting rod; when the upper supporting rod 3 moves outwards, the third movable die plate 12 and the fourth movable die plate 13 are driven to rotate around a hinge point, and form a flat plate with the second fixed die plate 11, and then continuously move outwards; when the mold is retracted, the mold plates and the interior of the box girder 100 are adhered to each other to a certain extent, and the contact area between the second fixed mold plate 11 and the interior of the box girder 100 is larger than the contact area between the third movable mold plate 12 and the fourth movable mold plate 13, so that when the upper support rod 3 moves inwards, the third movable mold plate 12 and the fourth movable mold plate 13 are preferentially driven to rotate around a hinge point, and then the second fixed mold plate 11 is driven to move downwards after the upper support rod rotates to a certain position, and is further retracted; it should be emphasized here that the main bearing shaft 104 plays a bearing role no matter how the upper support 3 moves.
The lower template 2 comprises: the movable mould comprises a first movable mould plate 22, a second movable mould plate 23 and a first fixed mould plate 21, wherein one end of the first movable mould plate 22 is hinged with the first end of the fixed mould plate, one end of the second movable mould plate 23 is hinged with the second end of the fixed mould plate, the end part of a lower support rod 4 is connected with a lower connecting block 41, the first end of the lower connecting block 41 is hinged with the first movable mould plate 22 through a first connecting rod, and the second end of the lower connecting block 41 is hinged with the second movable mould plate 23 through a second connecting rod; the first movable die plate 22 and the second movable die plate 23 are opened by the outward movement of the lower support bar 4, and the first movable die plate 22 and the second movable die plate 23 are closed by the outward movement of the lower support bar 4, so that the main bearing shaft 104 mainly bears the load.
The upper support rod 3 and the lower support rod 4 are both rotated by a first driving shaft 105; they move synchronously.
The left template 7 is an I-shaped template; the left support rod 5 is fixedly connected with a left template 7; the right template 8 is an I-shaped template; the right supporting rod 6 is fixedly connected with a right template 8; the second gear 1061 is rotated by the rotation of the second driving shaft 106, so that the rotation of the second rotating ring 121 drives the left and right formworks 7 and 8 to be unfolded or folded.
Further, in this embodiment, in order to improve the connection effect between the templates, the following arrangement is further adopted, specifically, a first limiting block is arranged at a joint between the bottom of the left template 7 and the first movable template 22, a first limiting groove adapted to the limiting block is arranged at a joint between the bottom of the first movable template 22 and the bottom of the left template 7, and when the upper template 1, the lower template 2, the left template 7 and the right template 8 are completely unfolded and mutually engaged, the first limiting block is embedded into the first limiting groove; a second limiting block is arranged at the joint of the bottom of the right template 8 and the second movable template 23, a second limiting groove matched with the limiting block is arranged at the joint of the bottom of the second movable template 23 and the bottom of the right template 8, and the second limiting block is embedded into the second limiting groove after the upper template 1, the lower template 2, the left template 7 and the right template 8 are completely unfolded and mutually connected; a third limiting block is arranged at the joint of the top of the left template 7 and the third movable template 12, a third limiting groove matched with the limiting block is arranged at the joint of the top of the third movable template 12 and the top of the left template 7, and the third limiting block is embedded into the third limiting groove after the upper template 1, the lower template 2, the left template 7 and the right template 8 are completely unfolded and mutually connected; a fourth limiting block is arranged at the joint of the top of the right template 8 and the fourth movable template 13, a fourth limiting groove matched with the limiting block is arranged at the joint of the top of the fourth movable template 13 and the top of the right template 8, and the fourth limiting block is embedded into the fourth limiting groove after the upper template 1, the lower template 2, the left template 7 and the right template 8 are completely unfolded and mutually connected; the effect of linking up has been accomplished through the effect of a plurality of stoppers and spacing groove, and is specific, stopper and spacing groove should notice the interference when the template is rotatory.
Finally, in this embodiment, the 35m small box girder 100 is taken as an example, the height of the inner film is generally 1m to 1.4m, and the minimum width of the inner film is 1m, so that in this embodiment, the first rotating ring 111 may be set to a circle having a diameter of 50cm, and the limit movement length of the support rod such as the upper support rod 3 is 25cm, and for the mold release, the mold plate may be separated from the inside of the box girder 100 by a movement displacement of about 5cm to 10 cm.
It should be noted that, for other technical points in the present embodiment, for example: the arrangement of the hinge point and the cooperation of the protrusion and the groove are all the understanding of the person skilled in the art, and will not be described herein.
Example 2
In the present embodiment, the main structure is completely the same as that in embodiment 1, such as: as shown in fig. 10,11, and 12, the structural design of the driving assembly 200, the connection relationship between the driving assembly 200 and the main bearing shaft 104, etc., but the positions of the 4 sets of driving assemblies 200 are not consistent with embodiment 1, it should be noted that the driving assembly 200 may be arranged anywhere on the circumference of the first rotating ring 111 due to the design of the rotating rings.
Further, the other differences are:
the upper template 1 is a plane template; the upper supporting rod 3 is fixedly connected with the upper template 1.
The lower template 2 comprises: the movable mould comprises a first movable mould plate 22, a second movable mould plate 23 and a first fixed mould plate 21, wherein one end of the first movable mould plate 22 is hinged with the first end of the first fixed mould plate 21, one end of the second movable mould plate 23 is hinged with the second end of the first fixed mould plate 21, the end part of a lower support rod 4 is connected with a lower connecting block 41, the first end of the lower connecting block 41 is hinged with the first movable mould plate 22 through a first connecting rod, and the second end of the lower connecting block 41 is hinged with the second movable mould plate 23 through a second connecting rod; through the outward movement of lower support rod 4, drive first movable mould board 22 and second movable mould board 23 and rotate around first fixed die plate 21, then realize expanding and drawing in, it needs to say that, drawing in of here lower bolster 2 has two influence factors, 1: the adhesion strength of the template and the inside of the box girder 100 is different, 2: the first movable die plate 22 and the second movable die plate 23 also rise preferentially under the self weight of the first fixed die plate 21; furthermore, when unfolding, an auxiliary limit plate can be arranged to unfold the interior.
The left template 7 is an L-shaped template; the left support rod 5 is fixedly connected with the left template 7, and the left support rod 5 forms an alpha angle with the horizontal plane, wherein alpha is more than 30 degrees and less than 60 degrees; the right template 8 is an L-shaped template; the right supporting rod 6 is fixedly connected with the right template 8, and the right supporting rod 6 forms an alpha angle with the horizontal plane, wherein alpha is more than 30 degrees and less than 60 degrees; the second gear 1061 is driven by the second driving shaft 106 to rotate, so as to rotate the second rotating ring 121, thereby moving the left support rod 5 and the right support rod 6.
It should be emphasized that the first driving shaft 105 and the second driving shaft 106 are preferably moved at the same time and only one is moved, so as to ensure the stability of the movement.
The working process is as follows: the first gear 1051 is driven to rotate by the first driving shaft 105, the first rotating ring 111 is driven to rotate, the upper supporting rod 3 and the lower supporting rod 4 are driven to move outwards or inwards, so that the upper template 1 and the lower template 2 are supported, the second driving shaft 106 is driven to move, the second rotating ring 121 is driven to rotate, the left supporting rod 5 and the right supporting rod 6 are driven to move outwards or inwards, so that the left template 7 and the right template 8 are supported.
Further, in this embodiment, a plurality of limiting grooves and limiting blocks are still provided to assist the connection, specifically, a first limiting block is provided at the joint of the left template 7 and the first movable template 22, a first limiting groove adapted to the limiting block is provided at the joint of the first movable template 22 and the left template 7, and when the upper template 1, the lower template 2, the left template 7 and the right template 8 are completely unfolded and connected with each other, the first limiting block is embedded into the first limiting groove; a second limiting block is arranged at the joint of the right template 8 and the second movable template 23, a second limiting groove matched with the limiting block is arranged at the joint of the second movable template 23 and the right template 8, and the second limiting block is embedded into the second limiting groove after the upper template 1, the lower template 2, the left template 7 and the right template 8 are completely unfolded and mutually connected; the first side of the first sliding block 102 and the first side of the second sliding block 103 are connected through a dovetail sliding groove structure; the reliability of the movement of the first sliding block 102 and the second sliding block 103 is ensured by the mutual limit of the two sliding blocks.
Specifically, in this embodiment, a method for using the inner mold of the whole pull-out type box girder 100 is also included,
s1: the driving piece 400 is started to drive the second driving shaft 106 to rotate, and the left template 7 and the right template 8 are expanded; then, the first driving shaft 105 is driven to rotate, and the upper template 1 and the lower template 2 are expanded; the internal mold of the opened box girder 100 is fixedly connected to the bracket 300 through the main bearing shaft 104;
s2: binding steel bars, pre-burying a corrugated pipe, installing an outer mold and pouring concrete;
s3: after the pouring is finished, the driving piece 400 is started to drive the first driving shaft 105 to rotate, and the upper template 1 and the lower template 2 are folded; then the second driving shaft 106 is driven to rotate, and the left template 7 and the right template 8 are folded; the inner die of the folded box girder 100 is fixedly connected to the bracket 300 through the main bearing shaft 104;
s4: and laying steel wheel plates at the bottom of the lower template 2, removing the bracket 300, and pulling out the inner membrane of the box girder 100 from the box girder 100.
In the step of S1, an auxiliary plate may be provided to assist the expansion between the upper and lower templates 1 and 2; alternatively, a hoist may be used to pull the inner membrane of the box girder 100 out of the box girder 100.
The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. 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 (8)
1. An integral drawing type box girder internal mold comprises an upper template (1), a lower template (2), a left template (7) and a right template (8); the upper template (1), the lower template (2), the left template (7) and the right template (8) are mutually jointed to form an inner film of an isosceles trapezoid one-section box beam (100); it is characterized by also comprising:
the box girder comprises a box girder (100), a plurality of groups of driving assemblies (200) arranged inside an inner membrane of the box girder (100), wherein each group of driving assemblies (200) is provided with an upper supporting rod (3) used for supporting an upper template (1), a lower supporting rod (4) used for supporting a lower template (2), a left supporting rod (5) used for supporting a left template (7), a right supporting rod (6) used for supporting a right template (8), a first gear (1051) used for controlling the movement of the upper supporting rod (3) and the lower supporting rod (4), and a second gear (1061) used for controlling the movement of the left supporting rod (5) and the right supporting rod (6); the upper supporting rod (3), the lower supporting rod (4), the left supporting rod (5) and the right supporting rod (6) can only move along the length direction of the upper supporting rod; each group of driving assemblies (200) is further provided with a fixed shell (101), and the fixed shells (101) are used for limiting the movement directions of the upper supporting rod (3), the lower supporting rod (4), the left supporting rod (5) and the right supporting rod (6);
a main load bearing shaft (104), the main load bearing shaft (104) being connected to a stationary housing (101) within each of the drive assemblies (200);
a drive shaft comprising a first drive shaft (105) and a second drive shaft (106), the drive assembly (200) further comprising: a first gear (1051) and a second gear (1061), the first drive shaft (105) being in driving connection with the first gear (1051), the second drive shaft (106) being in driving connection with the second gear (1061); the first gear (1051) is used for driving the upper supporting rod (3) and the lower supporting rod (4) to move, and the second gear (1061) is used for driving the left supporting rod (5) and the right supporting rod (6) to move; one end of the driving shaft is provided with a driving piece (400);
a first rotating ring (111) and a second rotating ring (121) which are coaxially arranged are further arranged, and a first complete plane thread (114) is arranged on one side, facing the second rotating ring (121), of the first rotating ring (111); a second complete plane thread (124) is arranged on one side, facing the first rotating ring (111), of the second rotating ring (121); a first internal gear (112) is arranged at the inner ring of the first rotating ring (111), and a second internal gear (122) is arranged at the inner ring of the second rotating ring (121); the first internal gear (112) is meshed with the first gear (1051), and the second internal gear (122) is meshed with the second gear (1061);
4 sets of sliding assemblies are arranged between the first rotating ring (111) and the second rotating ring (121), and each set of sliding assembly comprises: the sliding block structure comprises a first sliding block (102) and a second sliding block (103), wherein a first side of the first sliding block (102) and a first side of the second sliding block (103) are attached, a second side of the first sliding block (102) is provided with a first incomplete plane thread (1021) which is engaged with a first complete plane thread (114), and a second side of the second sliding block (103) is provided with a second incomplete plane thread (1031) which is engaged with a second complete plane thread (124);
the fixed shell (101) is connected with the main bearing shaft (104), the fixed shell (101) is completely wrapped on the first rotating ring (111) and the second rotating ring (121), and the first rotating ring (111) and the second rotating ring (121) are rotatably arranged around the main bearing shaft (104) in the fixed shell (101); the sliding assembly is arranged through the fixed shell (101), the main bearing shaft (104) is arranged through the fixed shell (101), and the driving shaft is arranged through the fixed shell (101);
go up bracing piece (3) and connect first sliding block (102) among the first group sliding subassembly, the third group is connected in lower support pole (4) first sliding block (102) among the sliding subassembly, the fourth group is connected in left branch vaulting pole (5) second sliding block (103) among the sliding subassembly, the second group is connected in right branch vaulting pole (6) second sliding block (103) among the sliding subassembly.
2. The internal mold of an integral drawing type box girder according to claim 1, further comprising a bracket (300), wherein the bracket (300) is arranged outside a section of the internal mold and is used for limiting the main bearing shaft (104), the first driving shaft (105) and the second driving shaft (106).
3. The integral pull type box girder inner mold according to claim 2,
the upper template (1) is a plane template; the upper supporting rod (3) is fixedly connected with the upper template (1);
the lower template (2) comprises: the movable mould comprises a first movable mould plate (22), a second movable mould plate (23) and a first fixed mould plate (21), wherein one end of the first movable mould plate (22) is hinged with the first end of the first fixed mould plate (21), one end of the second movable mould plate (23) is hinged with the second end of the first fixed mould plate (21), the end part of the lower supporting rod (4) is connected with a lower connecting block (41), the first end of the lower connecting block (41) is hinged with the first movable mould plate (22) through a first connecting rod, and the second end of the lower connecting block (41) is hinged with the second movable mould plate (23) through a second connecting rod;
the left template (7) is an L-shaped template; the left support rod (5) is fixedly connected with the left template (7), and the left support rod (5) forms an alpha angle with the horizontal plane, wherein alpha is more than 30 degrees and less than 60 degrees;
the right template (8) is an L-shaped template; the right supporting rod (6) is fixedly connected with the right template (8), the right supporting rod (6) forms an alpha angle with the horizontal plane, and alpha is more than 30 degrees and less than 60 degrees.
4. The integrally drawn box girder inner mold according to claim 3,
a first limiting block is arranged at the joint of the left template (7) and the first movable template (22), a first limiting groove matched with the limiting block is arranged at the joint of the first movable template (22) and the left template (7), and the first limiting block is embedded into the first limiting groove after the upper template (1), the lower template (2), the left template (7) and the right template (8) are completely unfolded and mutually connected;
the junction of right side template (8) and second movable mould board (23) is equipped with the second stopper, the junction of second movable mould board (23) and right side template (8) is equipped with the second spacing groove with stopper looks adaptation, and the second stopper embedding second spacing inslot after cope match-plate pattern (1), lower bolster (2), left template (7) and right template (8) expand each other completely.
5. The integral pull type box girder inner mold according to claim 2,
the upper die plate (1) includes: the die comprises a third movable die plate (12), a fourth movable die plate (13) and a second fixed die plate (11), wherein one end of the third movable die plate (12) is hinged with the first end of the second fixed die plate (11), one end of the fourth movable die plate (13) is hinged with the second end of the second fixed die plate (11), the end part of the upper supporting rod (3) is connected with an upper connecting block (31), the first end of the upper connecting block (31) is hinged with the third movable die plate (12) through a first connecting rod, and the second end of the upper connecting block (31) is hinged with the fourth movable die plate (13) through a second connecting rod;
the lower template (2) comprises: the movable mould comprises a first movable mould plate (22), a second movable mould plate (23) and a first fixed mould plate (21), wherein one end of the first movable mould plate (22) is hinged with the first end of the fixed mould plate, one end of the second movable mould plate (23) is hinged with the second end of the fixed mould plate, the end part of the lower support rod (4) is connected with a lower connecting block (41), the first end of the lower connecting block (41) is hinged with the first movable mould plate (22) through a first connecting rod, and the second end of the lower connecting block (41) is hinged with the second movable mould plate (23) through a second connecting rod;
the left template (7) is an I-shaped template; the left support rod (5) is fixedly connected with the left template (7);
the right template (8) is an I-shaped template; the right supporting rod (6) is fixedly connected with the right template (8).
6. The integral pull type box girder inner mold according to claim 5,
a first limiting block is arranged at the joint of the bottom of the left template (7) and the first movable template (22), a first limiting groove matched with the limiting block is arranged at the joint of the bottom of the first movable template (22) and the bottom of the left template (7), and the first limiting block is embedded into the first limiting groove after the upper template (1), the lower template (2), the left template (7) and the right template (8) are completely unfolded and mutually connected;
a second limiting block is arranged at the joint of the bottom of the right template (8) and the second movable template (23), a second limiting groove matched with the limiting block is arranged at the joint of the bottom of the second movable template (23) and the bottom of the right template (8), and the second limiting block is embedded into the second limiting groove after the upper template (1), the lower template (2), the right template (8) and the right template (8) are completely unfolded and mutually connected;
a third limiting block is arranged at the joint of the top of the left template (7) and the third movable template, a third limiting groove matched with the limiting block is arranged at the joint of the top of the third movable template and the top of the left template (7), and the third limiting block is embedded into the third limiting groove after the upper template (1), the lower template (2), the left template (7) and the right template (8) are completely unfolded and mutually connected;
the junction of the top of right side template (8) and fourth movable mould board (13) is equipped with the fourth stopper, the junction of the top of fourth movable mould board (13) and right side template (8) is equipped with the fourth spacing groove with stopper looks adaptation, and the fourth stopper embedding fourth spacing inslot after cope match-plate pattern (1), lower bolster (2), right side template (8) and right side template (8) expand each other completely.
7. The integral drawing type box girder inner mold according to claim 1, wherein the first side of the first sliding block (102) and the first side of the second sliding block (103) are connected by a dovetail sliding groove structure.
8. The integrally-drawn box girder inner mold according to claim 2, wherein the bottom of the support (300) is provided with a lifting mechanism.
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| CN202210652357.2A CN114833931B (en) | 2022-06-07 | 2022-06-07 | Integrally-drawing type box girder internal mold and using method |
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| CN113458242A (en) * | 2021-09-03 | 2021-10-01 | 徐州博尔越智能制造有限公司 | Motor vehicle accessory multi-angle simultaneous punching device based on self-adaptation and self-feedback |
| CN215236534U (en) * | 2021-08-07 | 2021-12-21 | 安徽相品智能科技有限公司 | Pipeline inner wall cleaning robot |
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| GB810038A (en) * | 1954-07-15 | 1959-03-11 | Eizaburo Negishi | Improvements in or relating to pirn winding apparatus |
| CN204997807U (en) * | 2015-09-25 | 2016-01-27 | 佛山路桥预制构件有限公司 | Prefabricated little case roof beam centre form device |
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Address after: 610047 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Patentee after: Sichuan Communications Construction Group Co.,Ltd. Address before: 610041 area a and B, 8th floor, Sichuan Expressway Building, No.90, West 1st section of 2nd Ring Road, Wuhou District, Chengdu City, Sichuan Province Patentee before: Sichuan Communications Construction Group Co.,Ltd. |