Precast beam hydraulic opening self-traveling formwork and self-travelling method

Abstract

The invention provides a precast beam hydraulic opening self-traveling formwork and a self-travelling method. In the production process of precast concrete beams, difficult problems that the beam body mortar leakage and the damage on the surfaces of beam bodies during formwork removal affect the appearance quality of beam bodies exist all the time, and simultaneously, the damage of concrete surface has significant influence on the durability of member concrete. The precast beam hydraulic opening self-traveling formwork comprises a supporting tackle (3), a hydraulic device (1) and a formwork frame (2), wherein the body of the supporting tackle is a rectangular supporting body (4) formed by welding profile steel; travelling wheels (5) are connected between the profile steel at the two sides of the lower end of the rectangular supporting body; a guide wheel (6) is connected between profile steel in the middle position of the lower end of the rectangular supporting body and is arranged at the inner side of a horizontal track (7); a slideway (8) is arranged at the upper end of the supporting tackle (3); and the formwork frame is arranged in the slideway through the travelling wheels. The precast beam hydraulic opening self-traveling formwork and the self-travelling method are applied to the technical field of concrete bridge production.

Description

[0001] Technical field: [0002] The invention relates to a hydraulically opened self-propelled formwork of a prefabricated beam and a self-propelled method. [0003] Background technique: [0004] In the production process of precast concrete beams, the damage to the surface of the beam body due to grout leakage and form removal has always been a problem that affects the appearance quality of the beam body. At the same time, the damage to the concrete surface also has a great impact on the durability of the component concrete. , especially for passenger dedicated lines and high-speed railways, the design life of prefabricated components is 100 years, so higher requirements are put forward for the durability of concrete. [0005] At present, the traditional precast concrete beam formwork is designed as bottom formwork, side formwork, end formwork, transverse connection plate formwork, bottom ingot pad, wedge and top wire, etc. When constructing precast concrete beams, the botto...

AI Technical Summary

Problems solved by technology

[0006] In the above-mentioned construction process, due to the heavy formwork and the large error of driving operation, the phenomenon of formwork removal, damage, and corner drop of the beam body occurred from time to time, which seriously affected the appearance quality of the beam body

At the same time, the side formwork is fastened to the side of the bottom formwork by means of wedges and top screws. Since the bottom formwork does not move and the side formwork vibrates when the concrete is vibrated, it is very easy to separate the side formwork from the bottom formwork, resulting in beam failure. Bottom grout leakage, which affects the appearance of the beam body and the local concrete strength of the beam body

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