Soil body thorough stirring type chain drill head

Abstract

The invention discloses a soil body thorough stirring type chain drill head. The chain drill head comprises cutting carriers located on the lower portions of drill rods and connected with one anotherend to end, the two ends of each cutting carrier are respectively installed on the lower portions of the two drill roads, and the cutting carriers can be driven by driving mechanisms to rotate circumferentially; the surfaces of the cutting carriers are provided with protruding structures; the several cutting carriers are arranged, the ends of every two adjacent cutting carriers are installed on the same drill rod, and the center lines of all the drill rods can be connected to form a triangle. Not only can the triangular effect be achieved, but also the polygonal cutting effect can be achievedwhen the number of coincident position points of the coinciding of the end portions projected by every two adjacent cutting carriers in the vertical direction exceeds three; the polygonal cutting andtriangular cutting can synchronously exist, therefore the triangular cutting can remove soil which may be subjected to polygonal cutting to avoid soil adhesion, and the performance of rock soil cutting, smashing and stirring is significantly improved.

Description

[0001] The present invention claims the priority of the Chinese utility model patent application whose application date is "May 12, 2017", the application number is "2017205251560", and the name is "soil fully agitating chain drill bit", and the application date is " December 12, 2017", the priority of the Chinese invention patent application with the application number "2017113202359" and the name "pile driver chain drill and pile driver", the entire content of which is incorporated in this application. technical field [0002] The invention belongs to the technical field of pile driver equipment, and relates to cement mixing pile forming equipment, in particular to a pile driver and its chain drill bit and related parts or components, in particular to a soil fully stirring chain drill bit. Background technique [0003] Cement mixing pile foundation is an effective form of soft foundation treatment. It usually uses cement as the main agent of the curing agent. The cement is ...

AI Technical Summary

Problems solved by technology

This kind of pile drill bit uses a spiral blade to cut and pulverize the soil. The size of the blade or the cutter head is relatively large, and the cut rock and soil are relatively large in size, and even blocky, which will lead to the following problems: 1. During the production process of the mixing pile, the cement slurry cannot enter the "blocked rock and soil", resulting in the presence of massive rock and soil in the concrete mixing pile, resulting in a significant decrease in the compressive and bearing capacity of the concrete mixing pile; ② When drilling the silt layer And when making concrete mixing piles, there may be a soil squeezing effect, which makes the bottom of the concrete mixing piles hollow, and the phenomenon of "floating piles" appears, resulting in unstable foundations of cement-soil mixing piles

This kind of chain-knife-type mixing pile wall-forming equipment is mostly used in excavating groove-type foundations. The chain-knife cutting box assembly has a large volume, large driving power, and high energy consumption, and its power is set on the top of the pile frame, which means The drive chain is longer, which not only makes the power efficiency low, but also prone to failure

In addition, there is still a technical problem of poor soil crushing effect due to the relatively large width horizontal cutters arranged on the chain rail

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