Asphalt pavement on-site heat recoveryremixer

Abstract

The invention discloses an on-the-spot thermal regenerative asphalt remixer of an asphalt road. A segregation-eliminating device containing a plurality of blades is arranged between a mixing device and a spreading device, and firstly passes the regenerative stock pile and turning over the mixture at the two sides of the stock pile along with the proceeding of the whole machine; the ground clearance of the lower edge of the blade is less than half of the maximum aggregate size of the regenerative mixture to fully actuate the large aggregate at the most bottom of the regenerative stock; the distance between the rear edge of the blade and the spreading device is less than 1m, a spiral distributing device of the spreading device that is adjacent closely after the isolation-removing device enters the regenerative stock pile which eliminates segregation, thus being capable of effectively avoiding that the segregation occurs again to the regenerative stock pile, the segregation of which is eliminated; the segregation-eliminating device is symmetrically arranged at the left side and right side of the longitudinal central line, and the distance between the outer edges at the left side and the right side of the blade is 0.5-3.0m so as to satisfy the requirement of different width of the regenerative stock pile. The segregation-eliminating device of the invention can also be applied to the ordinary spreading machine.

Description

technical field [0001] The invention relates to a pavement maintenance machine, in particular to an in-situ hot regeneration remixer for asphalt pavement. Background technique [0002] Hot-in-place regeneration construction of asphalt pavement refers to construction on the site of damaged asphalt pavement, by heating and raking the pavement, adding a certain regeneration agent and new asphalt mixture to the old material, stirring on site, and finally paving and compacting , forming a new regenerative surface layer. This construction method has many advantages such as 100% utilization of original pavement materials, fast construction speed, low cost, more environmental protection and energy saving, and has been recognized by the pavement maintenance industry. [0003] There are mainly two existing hot-in-place regeneration construction methods, one is one-step construction, which is mainly completed by the combination of pavement preheater, asphalt pavement hot-in-place recy...

AI Technical Summary

Problems solved by technology

However, during the stacking process of stirring and discharging to form a pile of recycled materials, aggregates with large particle sizes tend to roll down to both sides (such as Figure 1a shown), and gather on both sides of the bottom of the recycled stockpile (such as Figure 1b shown); limited by the structure of the auger distributor, the auger distributor of the paving device can only take away a small part of the large-grained aggregate at the segregation at the bottom of both sides of the recycled material pile during the working process, while the rest of the large-grained aggregate is left At the bottom of both sides of the stockpile, therefore, two obvious segregation zones are formed on the recycled pavement, and the porosity of the pavement at the segregation zone is relatively large, which is easy to permeate, thereby reducing the quality of the recycled pavement

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