CN220013770U - Scalable interior template of river course small-size box culvert - Google Patents

Abstract

The utility model provides a scalable interior template of river course small-size box culvert, the template is whole to be the square tube shape, includes four right angle shape's template units and connects the vertical rectangular form gasbag between four template units, and the gasbag can be inflated and deflated. After the gasbag fills, the whole cross-section size of this interior template expands, satisfy the formwork size, when the needs are disassembled the template, gassing or bleed, the gasbag becomes soft shrink, the template just can break away from fashioned box culvert internal surface, through guide bar and uide bushing's horizontal direction and spacing, control expansion and the direction of shrink, can also be through the locating pin tightly fix the location locking between the adjacent template unit that satisfies the size after the inflation, because the pressure of castable causes the extrusion shrink of template when avoiding pouring, this interior template spare part concentrates in the periphery, the inner space occupies for inside use such as box culvert is suitable for, do not influence the operator and get into the inside operation and use and adjust.

Description

Scalable interior template of river course small-size box culvert

Technical Field

The utility model relates to the technical field of box culvert cast-in-situ construction, in particular to a small-size box culvert collapsible inner template of a river channel.

Background

In hydraulic engineering, especially the engineering that involves river course management, the drainage problem of rainy day that involves river course view area, in order to guarantee the arrangement view effect in view area, generally can set up some drainage ditches in these subaerial, collect at last and follow and lead into the river in, generally guide into the river through the box culvert that is located river slope or bank limit, this drainage volume is only the regional rainwater of view and is collected, the flow is not very big, consequently the cross-section design size of box culvert is also not big, the design of box culvert overall shape is gone on according to the concrete condition of river slope, mostly accomplish the construction through on-the-spot formwork on-site pouring, because its cross-sectional size restriction, inside gyration space is less, cause inside formwork and form removal operation space to be limited, the degree of difficulty is big, it is more troublesome.

Disclosure of Invention

The utility model aims to solve the problems and provides a small-size box culvert collapsible inner template for a river channel.

The technical scheme of the utility model is as follows: the utility model provides a scalable interior template of river course small-size box culvert, the template is whole to be the square tube shape, including four right angle shape's template units and connect the connection structure that contracts that rises between four template units, every unit template includes two sides at least, and the vertical border department of adjacent template is the connection terminal surface, through vertical rectangular form gasbag fixed connection between the adjacent connection terminal surface, is equipped with on the gasbag and fills the gassing valve. The air bag is full and contracted and can drive the change of the cross section size of the whole inner die plate, and can be enlarged, reduced, used for supporting the die when enlarged and used for removing the die when reduced.

Preferably, a chamfer surface is further arranged between two side surfaces of each unit template, and is suitable for the box culvert with chamfer angles on the cross section, namely, the cross section is approximately octagonal.

Preferably, at least two expansion limiting components are arranged between the vertical edges of the adjacent templates in the templates, each expansion limiting component comprises a guide sleeve and a guide rod, the guide sleeve is respectively fixed between the two vertical edges of the templates, the guide rod is installed on the guide sleeve and matched with the diameter of the inside of the guide sleeve, one end of each guide rod is an expansion limiting end, and an adjusting limiting nut is installed on the other end of each guide rod. The guide rod and the guide sleeve cooperate to guide the template during expansion and contraction, and control the shape of the template. The limit nut is adjusted at the position of the guide rod, the limit size of the cross section of the expanded inner die plate can be controlled to reach the design size, meanwhile, the nut can be used for forcibly contracting the die plate when the die is disassembled, the contraction amplitude of the nut is larger than that of the air bag, and the die is convenient to move out.

Preferably, shrink-proof limiting mechanisms are arranged in the templates and between the vertical edges of the adjacent templates, the mechanisms comprise positioning strips A and B, the positioning strips A and B are respectively and transversely fixedly arranged on the inner surfaces of the adjacent templates, the positioning strips A extend to the upper or lower parts of the positioning strips B, the positioning strips A and B are overlapped and provided with positioning holes A and positioning holes B which are matched with each other, and positioning pins are arranged in the positioning holes A and B. The shrink-proof limiting mechanism is used for avoiding the shrinkage of the cross section of the inner template caused by the pressing of the concrete in the process of pouring the concrete.

Preferably, the inner surface of the template unit is provided with reinforcing rib plates which are intersected transversely and vertically.

Preferably, the upper end face and the lower end face of the template unit are provided with vertical positioning holes corresponding to the positions.

The beneficial effects of the utility model are as follows: the utility model provides a scalable interior template of river course small-size box culvert, the template is whole to be the square tube shape, includes four right angle shape's template units and connects the vertical rectangular form gasbag between four template units, and the gasbag can be inflated and deflated. After the gasbag fills, the whole cross-section size of this interior template expands, satisfy the formwork size, when the needs are disassembled the template, gassing or bleed, the gasbag becomes soft shrink, the template just can break away from fashioned box culvert internal surface, through guide bar and uide bushing's horizontal direction and spacing, control expansion and the direction of shrink, can also be through the locating pin tightly fix the location locking between the adjacent template unit that satisfies the size after the inflation, because the pressure of castable causes the extrusion shrink of template when avoiding pouring, this interior template spare part concentrates in the periphery, the inner space occupies for inside use such as box culvert is suitable for, do not influence the operator and get into the inside operation and use and adjust.

Drawings

FIG. 1 is a schematic diagram of a front view structure of a small-sized box culvert collapsible inner template of a river channel;

FIG. 2 is a top view and partial enlarged schematic illustration of FIG. 1;

FIG. 3 is a schematic perspective view of a small-sized box culvert collapsible inner template of a river channel;

FIG. 4 is a schematic perspective view of an assembly of two of the template units;

FIG. 5 is a schematic perspective view of a form unit;

FIG. 6 is a schematic perspective view of two modules extending in an overlapping manner;

1. the device comprises a template unit, an upper end surface, a lower end surface, a vertical positioning hole, a connecting end surface, a positioning strip A, a positioning hole A, a positioning strip B, a positioning hole B, a side surface, a chamfer surface, an air bag, a guide rod, a guide sleeve, a guide nut and a positioning pin.

Detailed Description

Embodiment one: referring to fig. 1-5, in the drawing, a small-size box culvert collapsible inner formwork of a river channel is integrally square and cylindrical, and comprises four right-angle-shaped formwork units and a collapsible connecting structure connected between the four formwork units, each unit formwork at least comprises two side faces, the vertical edges of adjacent formworks are connecting end faces, the adjacent connecting end faces are fixedly connected through vertical strip-shaped air bags, and air charging and discharging valves are arranged on the air bags. The air bag is inflated and exhausted through the inflation and deflation valve, the pressure inside the air bag can be changed, when the mould is required to be supported, the air bag is inflated, after the air bag is filled, the whole section size of the inner mould plate is expanded, the mould supporting size is met, when the mould is required to be disassembled, the air bag is deflated or exhausted, the air bag is contracted, and the mould is separated from the inner surface of the formed box culvert.

And a chamfer surface is also arranged between the two side surfaces of each unit template. The box culvert is suitable for box culverts with chamfer angles at four corners of the inner surface and octagonal cross section shape.

At least two expansion limiting components are arranged between the vertical edges of the adjacent templates in the templates, each expansion limiting component comprises a guide sleeve and a guide rod, the guide sleeve is respectively fixed between the two vertical edges of the templates, the guide rod is installed on the guide sleeve and matched with the diameter of the inside of the guide sleeve, one end of each guide rod is an expansion limiting end, and an adjusting limiting nut is installed on the other end of each guide rod. The limiting nut is adjusted to control the limit size of the inner template during expansion to be in accordance with the design size, and the guide rod and the guide sleeve are matched to realize the movement direction of each template unit during expansion and contraction, so that the direction of the inner template in the changing process is controllable and the inner template is not deformed.

The inside of template is equipped with shrink-proof stop gear between adjacent template vertical border, and this mechanism is including being located the horizontal fixed mounting's of adjacent template internal surface locating strip first and locating strip second respectively, and locating strip first extends to locating strip second's top or below, locating strip first and locating strip second coincide and be equipped with locating hole first and locating hole second that match each other, installs the locating pin in locating hole first and second. The two locating strips are matched with each other, the cross section size of the inner die is controlled to be unchanged after the die is supported through locking of the locating pin, and stable die supporting is achieved.

The inner surface of the template unit is provided with a transverse and vertical crossed reinforcing rib plate.

The method for using the inner template in the first embodiment comprises: according to the internal section size of the box culvert to be poured, the limiting nuts are adjusted to inflate the four air bags, the section size of the whole inner template begins to expand gradually, the guide rod slides in the guide sleeve until the guide rod is dead against the limiting nuts, the design size is achieved, and the section size does not expand any more. And the corresponding locating strips A and B on the two adjacent template units are fixed through locating pins, so that the section size of the inner template is ensured.

Then placing the inner template at the accurate position of the casting box culvert, and fixing the size and the relative position between the inner template and the outer template to achieve the casting condition;

after the box culvert is poured and solidified to reach the standard, positioning pins on the positioning strips A and B are driven to deflate the four air bags, the air bags become soft at the moment, the cross section size of the inner template can be reduced, a certain operation space is provided for demolding, and the template is separated from the inner surface of the box culvert; meanwhile, in order to further reduce the cross section size of the inner die plate after demolding, the inner die plate can be forcedly contracted by screwing the adjusting limit nut, so that the inner die plate can be conveniently moved out of the box culvert after demolding.

Embodiment two: referring to fig. 6, the upper and lower end surfaces of the template unit are provided with vertical positioning holes corresponding to the positions. The inner template can be formed by adopting a plurality of sections in the first embodiment to be used in a mode of overlapping and extending along the axial direction, and the upper section and the lower section are connected and positioned through the positioning holes, so that the axial length of the template is prolonged.

Embodiment III: the drawing does not show, the cross section of the inner template is rectangular, no chamfer surface exists, and the inner template is suitable for casting a box culvert with the rectangular cross section.

Claims (6)

1. The utility model provides a scalable interior template of river course small-size box culvert which characterized in that: the whole square cylinder-shaped template comprises four right-angle-shaped template units and a collapsible connecting structure connected between the four template units, each unit template at least comprises two side faces, the vertical edges of the adjacent templates are connecting end faces, the adjacent connecting end faces are fixedly connected through vertical strip-shaped air bags, and air charging and discharging valves are arranged on the air bags.

2. The small-size box culvert collapsible inner template of the river course of claim 1, wherein: and a chamfer surface is also arranged between the two side surfaces of each unit template.

3. The small-size box culvert collapsible inner template of the river course of claim 1, wherein: at least two expansion limiting components are arranged between the vertical edges of the adjacent templates in the templates, each expansion limiting component comprises a guide sleeve and a guide rod, the guide sleeve is respectively fixed between the two vertical edges of the templates, the guide rod is installed on the guide sleeve and matched with the diameter of the inside of the guide sleeve, one end of each guide rod is an expansion limiting end, and an adjusting limiting nut is installed on the other end of each guide rod.

4. The small-size box culvert collapsible inner template of the river course of claim 1, wherein: the inside of template is equipped with shrink-proof stop gear between the vertical border of adjacent template, and this mechanism includes locating strip first and locating strip second, and locating strip first and locating strip second transversely fixed mounting respectively are in the internal surface of adjacent template, and locating strip first extends to locating strip second's top or below, and locating strip first and locating strip second coincide and are equipped with locating hole first and locating hole second that match each other, install the locating pin in locating hole first and second.

5. The small-size box culvert collapsible inner template of the river course of claim 1, wherein: the inner surface of the template unit is provided with a transverse and vertical crossed reinforcing rib plate.

6. The small-size box culvert collapsible inner template of the river course of claim 5, wherein: the upper end face and the lower end face of the template unit are provided with vertical positioning holes corresponding to the positions.