An adjustable prefabricated caisson mandrel without vertical splayed and its prefabrication method

Abstract

The invention discloses an adjustable prefabricated caisson mandrel without a vertical splayed shape and a prefabrication method, belonging to the technical field of formwork, including 4 combined steel formworks arranged around the mandrel, a bottom plate arranged at the bottom end of the mandrel, and a bottom plate arranged on the bottom of the mandrel. The well frame at the upper end, the hydraulic system, the collection system and the control system, the mandrel also includes a baffle arranged between adjacent combined steel formwork; the combined steel formwork is a vertical splayed steel frame structure; A number of hydraulic cylinders connected to the steel frame structure on the combined steel formwork are arranged on the well-shaped frame, and the piston rod of the hydraulic cylinder one telescopically drives the combined steel formwork to move, and is used to adjust the position of the core mold and the outer formwork; The hydraulic pump station in the hydraulic system is placed on the upper end of the bottom plate, hydraulic wall bolts are embedded on both sides of the middle part, and adjustment mechanisms are embedded on the other two sides of the bottom. Compared with the traditional manual installation method, the present invention greatly shortens the installation time, improves the installation precision, and ensures the safety of operators.

Description

technical field [0001] The invention relates to the technical fields of machinery and hydraulic pressure, in particular to an adjustable prefabricated caisson mandrel without a vertical splayed shape and a prefabrication method. Background technique [0002] In various engineering constructions, the gravity caisson is a commonly used equipment in wharf engineering construction. During the pouring process of the caisson, a caisson mandrel is required. In the prior art, bulk formwork is often used for the formwork of the cell in the caisson, and a support system is set in the cell, and the concrete is poured after the erection of the formwork is completed. The disadvantages of this construction method are: the process of supporting the formwork is cumbersome; After concrete, the formwork needs to be separated manually, and then the formwork pieces are taken out, so the dismantling work using the formwork progresses slowly, and the safety of workers cannot be well guaranteed; a...

AI Technical Summary

Problems solved by technology

In the prior art, bulk formwork is often used for the formwork of the cell in the caisson, and a support system is set in the cell, and the concrete is poured after the erection of the formwork is completed. The disadvantages of this construction method are: the process of supporting the formwork is cumbersome; After concrete, the formwork needs to be separated manually, and then the formwork pieces are taken out, so the dismantling work using the formwork progresses slowly, and the safety of workers cannot be well guaranteed; as for the positioning of the core formwork bottom plate, it is generally done manually Calibration, the process is cumbersome, and it is difficult to ensure the accuracy of positioning

[0003] However, although the existing domestic self-shrinking inner formwork can be automated, such as the patent application number 2017207827298, the formwork adopts a vertical character, the structure is complex, the processing is difficult, and the disassembly is inconvenient; when the formwork moves, although there are two degrees of freedom , but the control is difficult and the motion accuracy is low; during the hoisting process, someone needs to observe the position of the mandrel and correct the position in real time, and the positioning accuracy is low

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