Propelling trolley

Abstract

The invention relates to a propelling trolley, which comprises a trolley base, a plurality of connection bracket bodies, a hydraulic control system, adjusting brackets, an oil cylinder A, a transverse shifting device, a slope adjusting device and a longitudinal shifting device, wherein the connection bracket bodies and the hydraulic control system are arranged above the trolley base, the adjusting brackets are arranged on the connection bracket bodies in an up-to-down sliding manner, the oil cylinder A is vertically arranged on the trolley base, the transverse shifting device can enable the trolley base to transversally shift relative to bracket beams, the slope adjusting device is arranged on the adjusting brackets, the longitudinal shifting device is arranged on the trolley base, and can enable a main beam to longitudinally shift, and the oil cylinder A is connected with the hydraulic control system. According to the invention, under the action of the transverse shifting device and the longitudinal shifting device, the propelling trolley can drive the main beam to transversally or longitudinally shift, and the oil cylinder A can push upwards the adjusting brackets to lift the main bream; as the slope adjusting device is arranged on the adjusting brackets, the slope adjusting device can enable the slope of the front and the back of the propelling trolley to be constant, further, the condition that a bracket bearing system of a movable formwork bridge fabrication machine has unbalance loading can be avoided, and in the longitudinal traveling process, the disadvantageous hyperstatic working condition can be avoided.

Description

technical field [0001] The invention relates to a component of a mobile formwork bridge building machine, in particular to a push trolley. Background technique [0002] In recent years, with the continuous growth of the scale of highway and high-speed railway construction in my country, downward and upward non-self-propelled mobile formwork bridge building machines have been widely used in domestic bridge construction since the 1990s. Among them, the descending non-self-propelled mobile formwork bridge building machine, in order to meet the construction needs of various bridge types, its lower support system such as corbels also has a variety of design forms, mainly including triangular corbels and box corbels , truss and steel box-type corbels and other forms, the latter two forms are widely used by construction units because of their simple structure, clear force, and no need to reserve holes on the pier body, but because of the upper force The transmission requirements o...

AI Technical Summary

Problems solved by technology

Among them, the descending non-self-propelled mobile formwork bridge building machine, in order to meet the construction needs of various bridge types, its lower support system such as corbels also has a variety of design forms, mainly including triangular corbels and box corbels , truss and steel box-type corbels and other forms, the latter two forms are widely used by construction units because of their simple structure, clear force, and no need to reserve holes on the pier body, but because of the upper force The transmission requirements of the system force are relatively high. Compared with the triangular corbel, the ability to withstand partial load is poorer. However, most of the propulsion trolleys designed at home and abroad currently use hydraulic cylinders for independent load bearing. The problem of partial load is very common. Construction during the walking process It is necessary to repeatedly copy pads and correct the slope, the operation is difficult and the accuracy is poor. The existence of this factor has a great impact on its safety.

Especially when the longitudinal slope of the cast-in-situ concrete box girder is greater than 2%, if the slopes of the sliding beams pushed forward and backward by the trolley are not consistent, it will cause the excessive load of the corbel beam to have a great impact on the overall stability and safety, and even bring The unfavorable working conditions of super static stability will be generated during the coming walking, which is very unfavorable to the construction of the mobile formwork bridge building machine in the longitudinal movement

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