CN211333796U

CN211333796U - Internal mold system for box culvert prefabrication

Info

Publication number: CN211333796U
Application number: CN201922492034.8U
Authority: CN
Inventors: 李兆龙; 丁磊; 路兆印; 张星; 马洪明; 邢兰涛; 邴倩; 王玉杰; 王鹏; 刘延龙; 奚成
Original assignee: China Railway 23rd Bureau Group Co Ltd; First Engineering Co Ltd of China Railway 23rd Bureau Group Co Ltd
Current assignee: China Railway 23rd Bureau Group Co Ltd; First Engineering Co Ltd of China Railway 23rd Bureau Group Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-25
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to the technical field of box culvert prefabricating moulds, in particular to an internal mould system for box culvert prefabrication, which comprises a stand column and a plurality of internal mould plates, wherein the internal mould plates are used for supporting the inner side surface of a box culvert, and the stand column and each internal mould plate are connected with a telescopic device; because be used for prefabricated centre form system of box culvert be provided with the telescoping device, the telescoping device can drive the inner formword is kept away from or is close to the stand motion, easy to assemble or demolish the inner formword to only set up a stand, just can demolish a plurality ofly simultaneously the inner formword has improved the efficiency of form removal for the construction progress.

Description

Internal mold system for box culvert prefabrication

Technical Field

The utility model relates to a prefabricated mould technical field of box culvert, especially a be used for prefabricated centre form system of box culvert.

Background

At present, the box culvert is usually manufactured by prefabricating the box culvert in segments in factories and then transporting the box culvert to a construction site for installation. The mould is needed to be used in the box culvert prefabrication, and the mould includes centre form and external mold again, carries out concrete placement in the space that centre form and external mold formed, waits that the concrete reaches the design requirement intensity and carries out the form removal, nevertheless manual form removal inefficiency to the dismantlement degree of difficulty of centre form is great.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the problems that the manual form removal efficiency is low and the removal difficulty of the inner mould is high in the prior art, the inner mould system for box culvert prefabrication is provided.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides an interior mode system for box culvert is prefabricated, includes a stand and a plurality of inner formword, the inner formword is used for supporting the medial surface of box culvert, stand and every the inner formword is connected with the telescoping device.

Because be used for prefabricated centre form system of box culvert be provided with the telescoping device, the telescoping device can drive the inner formword is kept away from or is close to the stand motion, easy to assemble or demolish the inner formword to only set up a stand, just can demolish a plurality ofly simultaneously the inner formword has improved the efficiency of form removal for the construction progress, moreover the centre form system can used repeatedly, practices thrift the cost.

As the utility model discloses an optimal scheme, an centre form system for box culvert is prefabricated still includes the chamfer template, the chamfer template is used for supporting the inboard chamfer of box culvert, the stand with the chamfer template is connected with the telescoping device. The chamfer template is arranged to be convenient for supporting the inner chamfer of the box culvert and is also convenient to install or dismantle.

As an optimized scheme of the utility model, the both ends of telescoping device respectively with the stand the interior template is articulated, and/or the both ends of telescoping device respectively with the stand the chamfer template is articulated.

As the utility model discloses an optimal scheme, the inner formword with the quantity of chamfer template is four, two liang of relative settings of inner formword, and adjacent two be equipped with one between the inner formword the chamfer template. Because the commonly used box culvert is a hollow cylinder with a square or rectangular cross section, four inner templates matched with the four sides of the square or rectangular box culvert are arranged, and the chamfer template is arranged at each chamfer.

As the utility model discloses an optimal scheme, the inner formword and/or the lateral surface of chamfer template is equipped with the extension board, the extension board thickness is less than the inner formword and/or the thickness of chamfer template, all the inner formword with the lateral surface of chamfer template can the amalgamation form closed structure, is used for supporting the box culvert is inboard, spills before avoiding the concrete to solidify.

Because the box culvert inner space is limited, and the inner formworks have certain thickness, can occupy certain inner space, if the cross-section of inner formworks is regular polygon structure, its lateral surface equals with the medial surface of box culvert just, all the inner formworks with chamfer template amalgamation back can support box culvert inboard completely just, then when utilizing the constriction device shrink carries out the form removal, can appear when the inner formworks shrink the back, the inner formworks thickness has taken the shrink space of chamfer template, leads to the unable form removal of chamfer template, perhaps when the chamfer template shrink back, the chamfer template thickness has taken the shrink space of inner formworks, leads to the unable condition of form removal of inner formworks. The mode that the outer side surfaces of the inner templates and/or the chamfering templates are provided with the extension plates is adopted, the thickness difference between the extension plates and the inner templates or the chamfering templates can be utilized, and the template removal is skillfully and conveniently completed under the condition that the inner space of the box culvert is limited and the telescopic length of the telescopic device is limited.

Specifically, the template removing sequence is that the template which is not provided with the extension plate is retracted firstly, then the template which is provided with the extension plate is retracted, after the contraction is completed, all the inner templates and the chamfer angle templates form a closed structure, the section perimeter of the formed closed structure is reduced, and the storage and the reuse are convenient.

If the outer side surfaces of the inner template and the chamfer template are both provided with extension plates, the template removing sequence is that all the inner templates are retracted firstly, and then all the chamfer templates are retracted; or retracting all the chamfering templates firstly and then retracting all the inner templates.

As the preferred scheme of the utility model, the inner formword with the chamfer template all vertical set up in the periphery of stand. When the prefabricated box culvert supporting frame is used, the stand columns are arranged at the symmetrical centers of the prefabricated box culverts, and the inner templates and the chamfering templates are vertically arranged on the peripheries of the stand columns, so that the inner sides of the box culverts can be supported conveniently; and vertical setting can prefabricate vertical box culvert, shortens the form removal cycle.

As the preferred scheme of the utility model, two be connected through the connecting piece between the telescoping device. The connecting piece is arranged, so that the strength of the telescopic device is increased.

As the utility model discloses a preferred scheme, every the inner formword with be connected with at least two between the stand the telescoping device, and/or every the chamfer template with be connected with at least two between the stand the telescoping device. The arrangement of at least two telescopic devices can well control the inner formwork or the chamfering formwork to move away from or close to the upright post.

As the utility model discloses an optimal scheme, its characterized in that, the stand is the square steel, the inner formword is the steel sheet, ensures to have enough intensity and prefabricates the box culvert.

As the preferable scheme of the utility model, its characterized in that, telescoping device is hydraulic jack or hydraulic cylinder. The hydraulic jack or the hydraulic oil cylinder is simple to operate and convenient to adjust, and the strength and the power of the hydraulic jack or the hydraulic oil cylinder are enough to drive the inner formwork and the chamfering formwork to move.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

Drawings

Fig. 1 is a schematic structural diagram of the internal mold system of the present invention during installation.

Fig. 2 is a schematic structural diagram of the inner mold system of the present invention when the mold is removed.

Fig. 3 is a sectional view a-a of fig. 1.

Fig. 4 is a schematic structural diagram of the internal mold system and the external mold system of the present invention.

Fig. 5 is a sectional view B-B of fig. 4.

Fig. 6 is a schematic structural diagram of the inner mold system and the outer mold system when the mold is removed.

Icon: 11-an inner template; 12-chamfering the template; 2-upright post; 3-a telescopic device; 4-a connector; 51-an outer template; 52-rib of stiffness; 53-a pull rod; 6-box culvert; 7-template fixing frame; 8-extension plate.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1-3, an internal mold system for box culvert prefabrication comprises a column 2, four internal mold plates 11 and four chamfering mold plates 12, wherein the internal mold plates 11 are used for supporting the inner side faces of the box culvert, the chamfering mold plates 12 are used for supporting chamfers on the inner side of the box culvert, the internal mold plates 11 are arranged in pairs and oppositely, and are adjacent to each other, one chamfering mold plate 12 is arranged between the internal mold plates 11, the internal mold plates 11 and the chamfering mold plates 12 are vertically arranged on the periphery of the column 2, and the external side faces of the internal mold plates 11 and the chamfering mold plates 12 can be spliced to form a closed structure.

Two expansion devices 3 are connected between each inner template 11 and the upright post 2, two ends of each expansion device 3 are respectively hinged with the upright post 2 and the inner template 11, two expansion devices 3 are also connected between each chamfering template 12 and the upright post 2, and two ends of each expansion device 3 are respectively hinged with the upright post 2 and the chamfering template 12; the two expansion devices 3 connected to each inner formwork 11 are arranged along the height direction, and the two expansion devices 3 connected to each chamfering formwork 12 are also arranged along the height direction; each of the expansion devices 3 connected to the inner formwork 11 and the chamfer formwork 12 is located in the same horizontal plane, the other expansion device 3 is located in the other horizontal plane, the eight expansion devices 3 located in the same horizontal plane are connected through connecting pieces 4, the strength of the expansion devices 3 is increased, and the connecting pieces 4 are rigid pieces.

The outer side of the chamfering template 12 is provided with an extension plate 8, and the thickness of the extension plate 8 is smaller than that of the inner template 11 and that of the chamfering template 12.

In this embodiment, the column 2 is square steel, the inner formworks 11 and the extension plates 8 are steel plates, and the telescopic device 3 is a hydraulic jack.

As shown in fig. 4-5, the method for using the internal formwork system for box culvert prefabrication includes:

placing the upright post 2 at the symmetrical center of the prefabricated box culvert, adjusting the telescopic device 3 to drive the inner formworks 11 and the chamfering formworks 12 to move away from the upright post 2, splicing the outer side surfaces of all the inner formworks 11 and the chamfering formworks 12 to form a closed structure, and locking the telescopic device 3 after reaching a specified position; and arranging an outer formwork system on the outer side of the inner formwork 11, wherein the outer formwork system comprises outer formworks 51, all the outer formworks 51 are spliced to form a closed structure, and concrete is poured in a space between the outer formworks 51 and the inner formwork 11 to form the box culvert 6.

In this embodiment, since the telescopic device 3 is a hydraulic jack, the adjustment mode is to connect a hydraulic oil pump with the hydraulic jack to provide power for the hydraulic jack.

The outer side surface of each outer template 51 is horizontally provided with a rib 52, the ribs 52 on two adjacent outer templates 51 are connected through a pull rod 53, so that the supporting strength of the outer templates 51 can be increased, and the ribs 52 are I-shaped steel. The inner formwork 11 and the outer formwork 51 which are positioned on the same side are also provided with formwork fixing frames 7 which are used for fixing the distance between the inner formwork 11 and the outer formwork 51 and can bear the lateral pressure generated by some poured concrete.

As shown in fig. 6, the method for stripping the internal formwork system for box culvert prefabrication includes:

firstly, the outer formwork 51 and the pull rod 53 on the outer side of the box culvert 6 are dismantled, then the telescopic device 3 connected with the inner formwork 11 is adjusted, so that the inner formwork 11 retracts firstly, and then the telescopic device 3 connected with the chamfering formwork 12 is adjusted, so that the chamfering formwork 12 retracts, and the formwork dismantling is completed.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an interior mode system for box culvert is prefabricated, its characterized in that includes a stand (2) and a plurality of inner formword (11), inner formword (11) are used for supporting the medial surface of box culvert, stand (2) and every inner formword (11) are connected with telescoping device (3).

2. The internal formwork system for box culvert prefabrication according to claim 1, further comprising a chamfering formwork (12), wherein the chamfering formwork (12) is used for supporting a chamfer on the inner side of a box culvert, and the telescopic device (3) is connected with the upright column (2) and the chamfering formwork (12).

3. The internal formwork system for box culvert prefabrication according to claim 2, characterized in that both ends of the telescoping device (3) are hinged with the upright column (2), the internal formwork (11), respectively, and/or both ends of the telescoping device (3) are hinged with the upright column (2), the chamfer formwork (12), respectively.

4. The internal formwork system for box culvert prefabrication according to claim 2, characterized in that the number of the internal formworks (11) and the number of the chamfer formworks (12) are four, the internal formworks (11) are arranged in pairs, and one chamfer formwork (12) is arranged between two adjacent internal formworks (11).

5. The internal formwork system for box culvert prefabrication according to claim 4, characterized in that the outer side surfaces of the internal formworks (11) and/or the chamfer formworks (12) are provided with extension plates (8), the thickness of the extension plates (8) is smaller than that of the internal formworks (11) and/or the chamfer formworks (12), and the outer side surfaces of all the internal formworks (11) and the chamfer formworks (12) can be spliced to form a closed structure.

6. An internal mould system for box culvert prefabrication according to claim 2, characterized in that the internal mould plates (11) and the chamfer mould plates (12) are both vertically arranged at the periphery of the upright (2).

7. An internal mould system for box culvert prefabrication according to claim 2, characterized in that two said telescoping devices (3) are connected by a connecting piece (4).

8. Internal mould system for box culvert prefabrication according to claim 2, characterized in that between each said internal formwork (11) and said upright (2) there are connected at least two said telescopic devices (3), and/or between each said chamfer formwork (12) and said upright (2) there are connected at least two said telescopic devices (3).

9. Internal mould system for box culvert prefabrication according to any one of claims 1-8, characterized in that the columns (2) are square steel and the internal formworks (11) are steel plates.

10. Internal mould system for box culvert prefabrication according to claim 9, characterized in that said telescoping devices (3) are hydraulic jacks.