Secondary crushing device of pipe jacking machine

Abstract

The invention discloses a secondary crushing device of a pipe jacking machine. The secondary crushing device of the pipe jacking machine comprises a pipe jacking machine body. The pipe jacking machinebody comprises a shell and a cabin barrel coaxially and fixedly arranged with the end portion of the shell. The secondary crushing device of the pipe jacking machine is characterized by comprising asecondary crushing mechanism, wherein the secondary crushing mechanism comprises a hollow circular-truncated-cone-shaped crushing bin with a large end opening, one end of the crushing bin is coaxiallyand fixedly connected with the end portion of the shell, and the other end of the crushing bin is fixedly connected with the inner side wall of the cabin barrel; a plurality of groups of crushing assemblies are fixedly arranged on the lower portion of the side wall of the crushing bin at intervals, and each group of crushing assembly comprises a plurality of first crushing tools which are weldedat equal intervals; and each group of crushing assembly are located on different bus bars of the crushing bin, and the central angle of the vertical section where the crushing assemblies are located is 100-120 degrees, and the angular bisector of the central angle is located directly below the central axis of the crushing bin. Secondary crushing can be carried out on the crushed objects entering the pipe jacking machine body, the particle size of the crushed objects is reduced, the phenomenon of "delayed discharging" caused by blockage of a slurry discharging pipeline is reduced, and the effect of continuous slurry discharging is achieved.

Description

technical field [0001] The invention relates to the technical field of pipe jacking construction. More specifically, the present invention relates to a secondary crushing device for a pipe jacking machine. Background technique [0002] Pipe jacking is particularly important in the construction of water supply, drainage, electric power, comprehensive pipe gallery and other projects, especially in the urban center area with dense population and heavy traffic. Nowadays, the concept of advancing with the times and pioneering and innovating has long been deeply rooted in the hearts of the people. The development of the city is inseparable from the improvement of the underground comprehensive pipe gallery. The construction volume of underground pipes will increase greatly, and the application of pipe jacking technology and trenchless technology will become more and more extensive. Especially in coastal cities such as the Yangtze River Delta and the Pearl River Delta, flexible ma...

AI Technical Summary

Problems solved by technology

However, the cutter head of the existing pipe jacking machine cannot completely chop the plastic drainage board with good flexibility and the relatively hard rock, which will cause the plastic drainage board and hard rock to block the slurry discharge channel, resulting in "stagnation" in the pipe jacking machine. "Phenomenon

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