Concrete mixer truck

Abstract

A concrete mixer truck comprises a mixing tank of which the inner wall is welded with mixing blades, and is characterized in that: the tank body of the mixing tank consists of a feeding cone-shaped section, a cylindrical section, and a tank bottom cone-shaped section; and the mixing blades consists of 20 double-spiral blades with different geometric dimensions and mounting angles, wherein blades No.1 to No.11 form the blades of the feeding cone-shaped section, the blade No.12 is positioned between the blades of the feeding cone-shaped section and the blades of the cylindrical section, the blades No. 13 to No.16 form the blades of the cylindrical section, and the blades No. 17 to No. 20 form the blades of the tank bottom cone-shaped section. The blades of the invention have four spatial curved helicoids A, B, C and D, different section heights, thread pitches, lead angles and feed face transitional angles at different sections, increase mixing and transporting capacity of dry and hard concrete and large-slump concrete, adapt to mixing and transporting of 0 to 260 millimeter slump commercial concrete, and solve the problems of aggregate segregation and difficult discharge of dry and hard concrete and mortar segregation of large-slump concrete.

Description

technical field [0001] The present invention relates to a concrete mixing and transporting device, in particular to a concrete mixing and transporting device with four space curves A, B, C, D and helical surface double mixing blades, which can adapt to the mixing and transporting of commercial concrete in the range of 0mm-260mm slump The utility model relates to an improvement on the structure of the mixing blades in the mixing tank of the existing concrete mixing transport vehicle, and belongs to the concrete mixing transport device. Background technique [0002] Commercial concrete refers to concrete that meets certain technical and application requirements and is supplied to construction sites by means of centralized mixing and long-distance transportation. At present, the construction industry generally uses concrete mixer trucks to transport the mixed concrete to the construction site for concrete pouring. This concrete mixer truck includes a mixing tank installed on t...

AI Technical Summary

Problems solved by technology

Shanghai Huajian, Liaoning Hainuo, Anhui Xingma, Xuzhou Liebherr and other well-known manufacturers of domestic first-class concrete mixer trucks can transport commercial concrete with a slump range of 50mm-230mm (Tangshan Yate is 30mm- -230mm), for the transportation of concrete with slump less than 50mm (30mm), there are a series of technical problems such as long discharge time, high residual rate, coarse aggregate segregation, hydraulic mixing system overflow; There are technical problems such as mortar segregation and overflow in the transportation of concrete larger than 230mm

This is because the structure and surface shape of the mixing blade are of great significance for improving the mixing quality of concrete, reducing the mixing resistance and reducing power consumption, while the structure and surface shape of the mixing blade in the mixing tank of the existing domestic concrete mixer truck It is very unreasonable. Generally, the logarithmic curve blade design is adopted, which fails to solve the problems of dry hard concrete aggregate segregation and difficult discharge, and large slump concrete is easy to mortar segregation.

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