Road Paving Machine Pivoting Side Plates for Bend-Leveling Access
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Solution Overview
Problem
The side plates of existing road paving machines obstruct the construction process in bending portions of the road, preventing the asphalt heating mixture from being leveled effectively.
Innovation Solution
A road paving machine with a screed that can expand and contract in the vehicle width direction, equipped with a side plate that pivots inward or outward from a pivoting shaft along the up-down direction, allowing the side plate to align with the construction range boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the side plate is fixed to extend from both side portions of the screed, then the paving width is expanded, but the side plate becomes an obstacle in bending portions preventing effective leveling
Solution Approach 1:
The side plate is made movable relative to the screed through a pivoting mechanism. The side plate can pivot between a first position extending from side portions to expand paving width, and a second position retracting inward to avoid obstruction in bending portions, allowing dynamic adaptation to different construction conditions
Solution Approach 2:
The side plate is divided into a main body portion fixed to the screed and a front end portion that can pivot independently. This segmentation allows the front end portion to be repositioned to avoid obstruction while maintaining the overall structure's function in expanding paving width
2Area of stationary object
If the side plate extends outward to expand paving width, then more area can be covered, but the side plate obstructs the asphalt heating mixture from being leveled in bending portions
Solution Approach 1:
The side plate is made movable relative to the screed through a pivoting mechanism. The side plate can pivot between a first position extending from side portions to expand paving width, and a second position retracting inward to avoid obstruction in bending portions, allowing dynamic adaptation to different construction conditions
Solution Approach 2:
The side plate front end portion is designed to pivot inward in advance before entering a bending portion, proactively avoiding potential obstruction to the asphalt heating mixture leveling process rather than reacting after obstruction occurs
Data Source
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AI summary
Provided is a road paving machine (100) capable of expanding a range in which a paving material (PV) can be laid. A road paving machine (100) is an asphalt finisher (100) including a tractor (1), a hopper (2), a conveyor (CV), a screw (SC), a screed (3), and a side plate (41). The hopper (2) is installed in front of the tractor (1) and receives a paving material (PV). The conveyor (CV) feeds the paving material (PV) in the hopper (2) behind the tractor (1). The screw (SC) spreads the paving material (PV) fed by the conveyor (CV) behind the tractor (1). The screed (3) is configured to expand and contract in a vehicle width direction, and levels the paving material (PV) spread by the screw (SC) behind the screw (SC). The side plate 41 includes a pivoting shaft (41r) along an up-down direction, and a side plate front end portion (41a) provided to pivot inward in the vehicle width direction from a position along a vehicle length direction with the pivoting shaft (41r) as a center.