Walking adjusting device for extension of mud pipe

Abstract

The invention provides a walking adjusting device for the extension of a mud pipe. A sliding plate is connected with a driving chain and the mud pipe, two sets of walking wheel devices are symmetrically arranged on the lower portion of the sliding plate, each set of walking wheel devices comprises a walking rubber wheel, and the walking rubber wheels are in rolling fit with the inner side faces, opposite to a steel structure rail, of the walking rubber wheels; T-shaped head pull rods are connected to the upper portions of walking wheel frames, bases which are provided with waist holes are correspondingly arranged on the sliding plate, each walking wheel device further comprises an elastic adjusting structure, each elastic adjusting structure comprises a limiting sleeve, spring supporting rods are coaxially and fixedly arranged in the limiting sleeves, springs sleeve outside the limiting sleeves, one ends, away from the walking wheel frames, of the spring supporting rods are screwed with adjusting nut assemblies through threads, one ends of the springs are in pushing fit with the adjusting nut assemblies, and the other ends of the springs are in pushing fit with the walking wheel frames so as to provide the elastic acting force of the walking wheel frames towards the steel structure track corresponding to the side. According to the walking adjusting device, the sliding plate canmove along an accurate path, and the problems that the sliding plate is deflected and inconvenient to reassemble can be solved.

Description

technical field [0001] The invention relates to the field of moving equipment for mud pipes of mud-water shield machines, in particular to a walking adjustment device for extending mud pipes. Background technique [0002] The distance between the slurry shield machine and the ground slurry treatment plant increases with the increase of the excavation depth, and the length of the slurry pipe needs to be continuously extended to meet the construction requirements. The extension of the mud pipe mainly depends on the driving structure composed of the sprocket chain, which drives the skateboard fixed on the chain to move back and forth, and the mud pipe that contacts the skateboard through the suction cup also moves on a certain track. In use, it is found that the mud pipeline arranged in a circular arc will exert a lateral external force on the slide when it moves forward and backward. Since the width of the slide is smaller than the span of the steel structure guide rail, and t...

AI Technical Summary

Problems solved by technology

In use, it is found that the mud pipeline arranged in a circular arc will exert a lateral external force on the slide when it moves forward and backward. Since the width of the slide is smaller than the span of the steel structure guide rail, and the non-rigid chain is not enough to limit the movement of the slide Lateral movement, which in turn causes the sled to go off track, causing the sled to scrape against the steel structure on both sides

Frequent scraping not only makes a lot of noise and deteriorates the construction environment, but also increases the span between the steel structures due to deformation, resulting in the gradual separation of the slide and the track. The correction and maintenance of the track will delay the construction progress, and even cause personnel accidents. Accidents involving casualties and equipment damage

In this regard, if a fixed limit device is installed on the slide to cooperate with the track, the following problems will exist during the entire mud pipe movement: 1) The left and right offset of the slide that is in direct or indirect contact with the mud pipe during the movement The unequal problem cannot be solved; 2) Since the stroke of the skateboard is greater than the longitudinal length of the steel structure, the skateboard will overturn when the skateboard moves to the end, which will cause the skateboard to break away from the steel structure track and move along a fixed track under the action of the chain , in the case of using a fixed limit device, due to the relatively small gap between the fixed limit structure and the steel structure rails on both sides, and the chain swinging left and right, it becomes very difficult for the flipped skateboard to return to the steel structure track. difficulty

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