Adjustable column formwork

Abstract

The invention discloses an adjustable column formwork. The adjustable column formwork comprises a front formwork body, a rear formwork body, a left formwork body and a right formwork body. A sliding groove, a small sliding groove, teeth and size scales are arranged on a pouring face of the rear formwork body, and two ends of the sliding groove are chiseled through. One end of the sliding groove ofeach of the left formwork body and the right formwork body is chiseled through, two bearings are arranged on a side wall of a non-chiseled end of each of the left formwork body and the right formworkbody, and the rest structures of the left formwork body and the right formwork body are the same with the structures of the rear formwork body. Four bearings are arranged on a side wall of the pouring face of the front formwork body. According to a column side line, the rear formwork body is firstly installed, the left formwork body and the right formwork body are embedded into the sliding grooveformed in the pouring face of the rear formwork body through the bearings of the left formwork body and the right formwork body to be connected with the rear formwork body, the front formwork body isembedded into the sliding groove formed in the pouring face of the left formwork body and the sliding groove formed in the pouring face of the right formwork body through the bearing on the front formwork body to be connected with the left formwork body and the right formwork body, and the upper formwork body and the lower formwork body are connected through bolts and inserting holes in the backfaces of the formwork bodies. The distance between the formwork bodies is achieved through sliding bearings according to the size scales on the pouring faces, each sliding groove is sealed through a sealing strip embedded into the corresponding small sliding groove, and the formwork bodies are fixed through formwork fixing devices and the sealing strips. The formwork is convenient to dismount andassemble, one formwork can be used for pouring of columns in multiple sizes, column hoops are not needed, and popularization is facilitated.

Description

technical field [0001] The invention relates to the technical field of building formwork, and is specifically designed as an adjustable column formwork. Background technique [0002] The building formwork is a temporary support structure, which is manufactured according to the design requirements, so that the concrete structure and components are formed according to the specified position and geometric size, maintain their correct position, and bear the self-weight of the building formwork and the external load acting on it. In cast-in-place concrete structure engineering, formwork (including support) engineering generally accounts for 20%-30% of the cost of concrete structure engineering, 30%-40% of engineering labor, and 50% of construction period. Therefore, the purpose of formwork engineering is to ensure the quality of concrete engineering and construction safety, speed up the construction progress and reduce engineering costs. [0003] However, there are many deficien...

AI Technical Summary

Problems solved by technology

[0003] However, there are many deficiencies in the formwork currently used in concrete column pouring. Bamboo formwork, wood formwork and plastic formwork have poor rigidity, strength and impact resistance, high damage rate, low turnover times, and "expansion" is prone to occur during concrete pouring. Or damaged, which brings great risks to the construction. In addition, bamboo formwork and wood formwork have poor moisture resistance and are extremely perishable, resulting in inability to use and increase costs in humid environments, and causing damage to the ecological environment. Bamboo formwork, wood formwork and plastic formwork The surface is not smooth and easily deformed, resulting in rough or uneven surface of the finished concrete. In addition, the stability and connection of most of the existing formwork cannot be separated from the column hoop, and the connection of the column hoop often requires a lot of construction labor to connect. When pouring concrete, the column hoop must be tightened again, and the operation is complicated. Many formworks are not easy to demould. If they are not professionally demoulded, it is easy to cause damage to the concrete products. At present, the construction industry uses a lot of formwork, and the amount used per year They are all as high as hundreds of millions of square meters. From this, it can be seen that the reuse rate of the formwork is low, and it cannot meet the requirements that one formwork can be used for pouring columns of different sizes. Secondly, due to the technical differences of construction workers or construction errors, it is difficult to guarantee the quality of concrete pouring. In addition, many formwork It is difficult to clean and maintain, thus reducing the service life of the formwork. In summary, the existing formwork can more or less better meet the following requirements: construction workers' use requirements, construction budget requirements, construction quality requirements, construction safety requirements, Requirements for repeated use and energy conservation and environmental protection are not easy for the development of the construction industry in the future, and cannot be widely promoted and popularized

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