Elevation control device for scraper knife of single-GPS land leveler and control method

Abstract

The invention discloses an elevation control device for a scraper knife of a single-GPS land leveler and a control method. A GPS receiver is arranged at one end of the scraper knife of the land leveler for receiving a current position elevation signal; a first direction angle sensor is arranged on a rack of the land leveler, and is used for detecting a rotation angle, around a transverse center line of the scraper knife of the land leveler, of the scraper knife; a second direction angle sensor is arranged on the scraper knife and is used for detecting a rotation angle, around a center line perpendicular to the horizontal plane, of the scraper knife; a third direction angle sensor is arranged on a traction frame rotary disc of the land leveler, and is used for detecting a rotation angle, around a center line in the travelling direction of the land leveler, of the scraper knife; and the two ends of the scraper knife are separately equipped with a lifting oil cylinder which is used for regulating elevation of the scraper knife to a target value. The elevation control device only adopts single GPS receiver, and integrates direction angle sensors to assist detection, so that high-precision elevation control is realized; and the system only adopts one GPS receiver, so that the application cost of the GPS system is greatly reduced.

Description

technical field [0001] The invention relates to the field of soil foundation, organic or inorganic binding material stabilized soil cushion and base layer of buildings such as highways, railways, airports, docks, etc., and more particularly relates to a single GPS grader elevation control device and system. Background technique [0002] As a multi-purpose continuous operation earth-moving machine for land leveling and shaping operations, the grader plays an unparalleled role in the construction of highway subgrade leveling. In order to ensure the flatness of the construction, at the same time greatly reduce the labor intensity of the operator, and improve the construction efficiency, the grader system with automatic elevation control function is an effective solution. [0003] At present, there are mainly two kinds of elevation control systems, one is a two-dimensional elevation control system based on laser, and the other is a three-dimensional elevation control system base...

AI Technical Summary

Problems solved by technology

[0008] For the current GPS leveling technology, two GPS sensors are usually used to detect the height of the blade and control the action of the oil cylinder to achieve automatic leveling operations. However, the price of a single GPS is more than 100,000, which is expensive, high in application costs, and difficult to apply on a large scale. , the object of the present invention is to propose a single GPS-based blade elevation control method, device and system for a grader, which can significantly reduce costs

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