Grader Blade Slope Control via Multi-Angle Feedback

Solution Overview

Problem

Current grader systems face challenges in accurately controlling the slope angle during slope scraping operations due to uneven construction road surfaces, leading to inconsistent target slope angles and requiring manual adjustments, which are time-consuming and labor-intensive with low automation.

Innovation Solution

A grader system equipped with a front frame, adjustable blade, actuator, angle detecting members, and a controller that calculates the actual slope angle based on inclination and blade attitude information, adjusting the blade to a preset target slope angle using a sequence of priorities involving linear and rotary drive members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual observation and adjustment by grader operator is used, then the system can operate on uneven road surfaces, but the slope angle control accuracy deteriorates due to reliance on operator experience

Engineering Contradiction:

Improveability to operate on uneven road surfacesVSAvoidslope angle control accuracy

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent implements automatic feedback control by detecting the actual slope angle during operation and comparing it with the target slope angle. The system automatically adjusts the blade attitude based on the detected deviation, eliminating reliance on operator experience while maintaining adaptability to uneven road surfaces.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces the manual mechanical adjustment system with an automated control system that uses sensors to detect slope angle and electronically controls the actuators. This substitution of manual operation with automated sensing and control improves precision while maintaining operational flexibility.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If manual repeated adjustments are made to achieve target slope angle, then the system can adapt to varying road conditions, but the construction time increases due to multiple operations

Engineering Contradiction:

Improveability to adapt to varying road conditionsVSAvoidconstruction time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent enables continuous automatic adjustment of the blade slope angle during operation. The system continuously detects the actual slope angle and makes real-time adjustments without interruption, eliminating the need to stop for repeated manual adjustments and significantly reducing construction time while maintaining adaptability.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The system performs self-adjustment by automatically detecting slope angle deviations and controlling the actuators to correct them. This self-service capability eliminates the need for continuous manual intervention, allowing the system to adapt to varying road conditions autonomously while maintaining efficient operation.

Inventive Principle:

Principle #25Self-service

3Device complexity

If manual control methods are used, then the system structure remains simple, but the automation level deteriorates due to dependence on operator skill

Engineering Contradiction:

Improvesystem structure simplicityVSAvoidautomation level

Core Design Contradiction:

Device complexityVSExtent of automation

Solution Approach 1:

The patent implements automatic feedback control by detecting the actual slope angle during operation and comparing it with the target slope angle. The system automatically adjusts the blade attitude based on the detected deviation, eliminating reliance on operator experience while maintaining adaptability to uneven road surfaces.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces the manual mechanical adjustment system with an automated control system that uses sensors to detect slope angle and electronically controls the actuators. This substitution of manual operation with automated sensing and control improves precision while maintaining operational flexibility.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11970835B2Grader and slope scraping control method and device thereof

Publication Date: 2024.04.30 JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD

AI summary

A grader and slope scraping control method and device include a grader having a front frame; a blade mounted on the front frame, an attitude of the blade is adjustable; an actuator for adjusting the attitude of the blade; a first angle detecting member for detecting a first inclination angle in a front and rear direction of the grader relative to a horizontal plane and a second inclination angle in a left and right direction relative to a horizontal plane; a blade detecting member for detecting attitude information of the blade relative to the front frame; and a controller, for obtaining an actual slope angle based on the first inclination angle, second inclination angle and attitude information, and make the actuator adjust attitude of the blade to a target slope angle when the actual slope angle is inconsistent with the preset target slope angle.