Asphaltfertiger

AT1912636TActive Publication Date: 2026-05-15SUMITOMO HEAVY IND LTD
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Patent Information

Application Number
AT2023179303T
Authority / Receiving Office
AT · AT
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-09-08
Filing Date
2023-06-14
Publication Date
2026-05-15
Estimated Expiration
2043-06-14

AI Technical Summary

Technical Problem

Asphalt finishers face challenges in maintaining appropriate paving material distribution on road surfaces, particularly when changing direction, as existing systems do not adequately adjust the screw rotation speed to match changes in road surface area, leading to inefficiencies in construction quality.

Method used

The asphalt finisher is equipped with a system that adjusts the screw rotation speed based on the moving direction and position of the machine, using a controller that associates screw rotation speeds with steering angles and road surface conditions to ensure optimal material distribution.

Benefits of technology

This adjustment improves road surface construction quality by ensuring the right amount of paving material is applied according to the changing road surface area, reducing material inefficiencies and enhancing the overall paving process.

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Abstract

Construction quality of a road surface is improved. An asphalt finisher (100) includes a tractor (1), a hopper (2) that is provided on a front side of the tractor (1), a conveyor (CV) that transports a paving material in the hopper (2) to a rear side of the tractor (1), a screw (SC) that spreads the paving material, which is transported by the conveyor (CV) and which is sprinkled on a road surface in a vehicle width direction, and a screed device (3) that levels the paving material spread by the screw (SC) on a rear side of the screw (SC) and that is capable of expanding and contracting in the vehicle width direction, in which a rotation speed of the screw (SC) is configured to be changed while the asphalt finisher (100) is moved by the tractor (1) based on information related to a moving direction of the asphalt finisher (100).
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