CN112412034A

CN112412034A - Self-disassembling concrete formwork

Info

Publication number: CN112412034A
Application number: CN202011354960.XA
Authority: CN
Inventors: 李高峰; 张震; 李保军
Original assignee: Henan Polytechnic Institute
Current assignee: Henan Polytechnic Institute
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-02-26
Anticipated expiration: 2040-11-27
Also published as: CN112412034B

Abstract

The invention relates to a self-disassembling concrete formwork, which effectively solves the problems of low working efficiency, large workload and easy damage to a concrete wall during concrete pouring and disassembling; the technical scheme includes that the formwork comprises a formwork main body, four groups of jacking units are arranged on the formwork main body, the four groups of jacking units are distributed at four corners of the formwork main body in a rectangular mode, each jacking unit comprises a rectangular groove formed in the inner side of the formwork main body, a rectangular plate is installed in each rectangular groove, a mandrel perpendicular to each rectangular plate and a first annular sleeve are fixed on the outer side face of each rectangular plate, a second annular sleeve is fixed on the outer side face of the formwork main body, and the first annular sleeve and the second annular sleeve can move back to eject the rectangular plates out of the rectangular grooves, so that the formwork is separated from a wall body; the invention can rapidly and laborsavingly remove the template, improves the working efficiency, reduces the working difficulty and simultaneously avoids the damage to the wall body when the prying bar prizes the template.

Description

Self-disassembling concrete formwork

Technical Field

The invention relates to the field of building construction, in particular to a self-disassembling concrete formwork.

Background

The concrete pouring is an essential process in the current pouring construction, the concrete is poured after the template is erected, and the template is removed after the concrete is solidified; the existing template dismantling method generally adopts a crow bar to pound between a template and a wall body, the template is dismantled by taking the wall body as a force application point, and the crow bar is not easy to insert between the template and the wall body, so that the working efficiency is extremely low, the labor is very great, the workload is large, the crow bar needs to be pried in the direction vertical to the wall body, if the template dismantling work is carried out in a narrow space, a long crow bar is not used in enough space, the labor is more great, and the crow bar can damage the concrete wall body; although some form removing equipment also exists at present, most of the form removing equipment utilizes a support or lifting equipment to pull out a form, the equipment is large in size and inconvenient to move, and particularly the equipment is inconvenient to use in narrow and messy construction environments, so that the applicability is not strong.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the self-disassembling concrete formwork, which effectively solves the problems of low working efficiency, large workload and easy damage to a concrete wall during concrete pouring and formwork disassembling.

The technical scheme includes that the self-disassembling concrete formwork comprises a formwork main body, four groups of jacking units are arranged on the formwork main body and distributed at four corners of the formwork main body in a rectangular mode, each jacking unit comprises a rectangular groove formed in the inner side of the formwork main body, a rectangular plate is installed in each rectangular groove and is flush with the inner side face of the formwork main body, a mandrel perpendicular to the rectangular plate and a first annular sleeve are fixed on the outer side face of each rectangular plate, each first annular sleeve is sleeved outside the mandrel, a second annular sleeve coaxial with the mandrel is fixed on the outer side face of the formwork main body through a plurality of connecting rods, each second annular sleeve is sleeved on the mandrel and located on the outer side of the corresponding first annular sleeve, a first coiling wheel sleeved on the mandrel is installed between the corresponding first annular sleeve and the corresponding second annular sleeve, triangular bulges are evenly distributed on the two ends of the first coiling wheel on the circumference, the protrusions extend from the vertex angles to the two ends along the circumferential direction of the winding wheel, grooves corresponding to the protrusions one by one are formed in the outer end of the first annular sleeve and the inner end of the second annular sleeve, and the protrusions can extend into the grooves; a second winding wheel is installed in the center area of the outer side face of the template main body, a pull rope is connected between each first winding wheel and each second winding wheel, and the second winding wheels can rotate to pull the first winding wheels to rotate through the pull ropes.

The invention can rapidly and laborsavingly remove the template, improves the working efficiency, reduces the working difficulty and simultaneously avoids the damage to the wall body when the prying bar prizes the template.

Drawings

Fig. 1 is a front view of the present invention.

Figure 2 is a side cross-sectional view of the invention without removal of the mold.

Figure 3 is a side cross-sectional view of the present invention as it is being demolded.

Fig. 4 is an enlarged view of the position a in fig. 2.

Fig. 5 is an enlarged view of the position B in fig. 3.

Fig. 6 is an enlarged view of the position C in fig. 1.

Fig. 7 is a front view of the first reel.

Fig. 8 is a side view of the first reel.

Fig. 9 is a perspective view of the first reel.

Fig. 10 is a first perspective view of two annular sleeves engaged with a first take-up reel.

Fig. 11 is a second perspective view of two annular sleeves engaged with the first take-up reel.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.

As shown in fig. 1 to 11, the invention comprises a template main body 1, four groups of jacking units are arranged on the template main body 1, the four groups of jacking units are distributed at four corners of the template main body 1 in a rectangular shape, each jacking unit comprises a rectangular groove 2 arranged at the inner side of the template main body 1, a rectangular plate 3 is arranged in the rectangular groove 2, the rectangular plate 3 is flush with the inner side surface of the template main body 1, a mandrel 4 and a first annular sleeve 5 which are vertical to the rectangular plate 3 are fixed on the outer side surface of the rectangular plate 3, the first annular sleeve 5 is sleeved outside the mandrel 4, a second annular sleeve 7 which is coaxial with the mandrel 4 is fixed on the outer side surface of the template main body 1 through a plurality of connecting rods 6, the second annular sleeve 7 is arranged on the mandrel 4 and is positioned at the outer side of the first annular sleeve 5, a first coiling wheel 8 which is sleeved on the mandrel 4 is arranged between the first annular sleeve 5 and the second annular sleeve 7, triangular bulges 9 are uniformly distributed on the two ends of the first coiling wheel 8 in the circumferential direction, the bulges 9 extend from the vertex angle to the two ends along the circumferential direction of the coiling wheel, grooves 10 corresponding to the bulges 9 one by one are formed in the outer end of the first annular sleeve 5 and the inner end of the second annular sleeve 7, and the bulges 9 can extend into the grooves 10; a second winding wheel 11 is installed in the central area of the outer side surface of the template main body 1, a pull rope 12 is connected between each first winding wheel 8 and the second winding wheel 11, and the second winding wheel 11 rotates to pull the first winding wheels 8 to rotate through the pull rope 12.

A large gear 13 is coaxially fixed on the second winding wheel 11, a small gear 14 meshed with the large gear 13 is installed on the outer side surface of the template main body 1, and a ring lug 15 is fixed on the outer end surface of the small gear 14; a pry bar rotatable small gear 14 is inserted into the ring lug 15, and the small gear 14 drives the second winding wheel 11 to rotate through the large gear 13, so that the labor-saving effect is achieved.

The outer side of each rectangular plate 3 is fixedly provided with a guide rod 16 penetrating through the template main body 1, so that the first annular sleeve 5 can be prevented from rotating along with the winding wheel when the first winding wheel 8 is pulled.

Before a template main body 1 is supported by a template, bulges 9 at two ends of a first coiling wheel 8 are respectively inserted into grooves 10 at the end parts of a first annular sleeve 5 and a second annular sleeve 7, the distance between the first annular sleeve 5 and the second annular sleeve 7 is the nearest, and the inner side surface of a rectangular plate 3 is flush with the inner side surface of the template main body 1 to form a flat template surface; after the formwork main bodies 1 are erected on two sides of the wall to be poured, concrete pouring can be carried out.

When the form needs to be removed after the concrete is solidified, a crow bar is inserted into an annular lug 15 on a pinion 14, the pinion 14 is rotated through the crow bar, the pinion 14 drives a large gear 13 and a second winding wheel 11 to rotate, the second winding wheel 11 rotates to drive four first winding wheels 8 to rotate through four pull ropes 12, the first winding wheels 8 rotate relative to a first annular sleeve 5 and a second annular sleeve 7, protrusions 9 at two ends can be rotated out of grooves 10, the first annular sleeve 5 and the second annular sleeve 7 are pushed towards two sides, and because the inner side surfaces of rectangular plates 3 are tightly attached to a concrete wall body, the four winding wheels can push a form main body 1 from four corners to the outer side through the four second annular sleeves 7, the form main body 1 is separated from the concrete wall body, and convenient, rapid and labor-saving form removal work is realized.

According to the invention, the movable rectangular plate 3 is arranged on the template main body 1, so that the template main body 1 can be quickly separated from the concrete wall through the rectangular plate 3 during template removal, the whole process is convenient and labor-saving, and a prying bar is not needed for repeatedly prying the template, so that the working efficiency is improved, the working difficulty is reduced, and meanwhile, the damage to the wall when the prying bar prizes the template is avoided; in addition, compared with other existing form removal devices, the form removal device does not need large-size external supporting equipment and pulling equipment, the crow bar rotates in a plane parallel to the wall surface, the requirement on construction space is low, the form removal device is applicable to narrow or messy construction space, and the practicability is high.

Claims

1. A self-disassembling concrete formwork comprises a formwork main body (1) and is characterized in that four groups of jacking units are arranged on the formwork main body (1), the four groups of jacking units are distributed at four corners of the formwork main body (1) in a rectangular mode, each jacking unit comprises a rectangular groove (2) formed in the inner side of the formwork main body (1), a rectangular plate (3) is installed in each rectangular groove (2), the rectangular plate (3) is flush with the inner side face of the formwork main body (1), a mandrel (4) and a first annular sleeve (5) perpendicular to the rectangular plate (3) are fixed on the outer side face of the rectangular plate (3), the mandrel (4) is sleeved with the first annular sleeve (5), a second annular sleeve (7) coaxial with the mandrel (4) is fixed on the outer side face of the formwork main body (1) through a plurality of connecting rods (6), the second annular sleeve (7) is arranged on the mandrel (4) and located on the outer side of the first annular sleeve (5), a first coiling wheel (8) which is sleeved on the mandrel (4) is installed between the first annular sleeve (5) and the second annular sleeve (7), triangular bulges (9) are uniformly distributed on the two ends of the first coiling wheel (8) in the circumferential direction, the bulges (9) extend from the vertex angle to the two ends along the circumferential direction of the coiling wheel, grooves (10) which correspond to the bulges (9) one by one are formed in the outer end of the first annular sleeve (5) and the inner end of the second annular sleeve (7), and the bulges (9) can stretch into the grooves (10); a second winding wheel (11) is installed in the center area of the outer side face of the template main body (1), a pull rope (12) is connected between each first winding wheel (8) and the second winding wheel (11), and the second winding wheel (11) can rotate to pull the first winding wheels (8) to rotate through the pull rope (12).

2. A self-disassembling concrete form according to claim 1, characterized in that a large gear (13) is coaxially fixed on the second reel (11), a small gear (14) engaged with the large gear (13) is installed on the outer side surface of the form body (1), and a ring lug (15) is fixed on the outer end surface of the small gear (14).

3. A self-stripping concrete form as claimed in claim 1, characterised in that the outer side of each rectangular plate (3) is provided with a guide rod (16) passing through the form body (1) to prevent the first annular sleeve (5) from rotating with the reel (8) when the latter is pulled.