Automatic leveling system and method for six-point support bridging platform

Abstract

The invention discloses an automatic leveling system and method for a six-point support bridging platform; six supporting legs are respectively provided with a pressure sensor and respectively connected with a hydraulic device; each hydraulic device is connected with the pressure sensor and an electro-hydraulic servo valve; and a controller is respectively connected with an alarm, a double-shaft tilt sensor, each pressure sensor and each electro-hydraulic servo valve. Coarse adjustment is performed firstly, and then fine adjustment is performed; the coarse adjustment comprises the steps of: inputting a sensed pressure signal of each supporting leg to the controller by the corresponding pressure sensor on the supporting leg, if the pressure value of the supporting leg is less than a preset value in the controller, controlling the alarm to emit an alarm by the controller, or else, performing the fine adjustment; and the fine adjustment comprises the steps of: keeping two middle auxiliary supporting legs still, adjusting two forward supporting legs and two backward supporting legs, keeping the highest supporting leg still, firstly leveling an X direction, and then leveling a Y direction. The automatic leveling system and method for the six-point support bridging platform can ensure that the platform can be automatically leveled in an outdoor severe environment, the good leveling precision and speed can be obtained, and strong environmental applicability and safety are provided.

Description

technical field [0001] The invention belongs to the field of construction machinery, and relates to an electromechanical-hydraulic integrated control system, specifically, an automatic leveling control system, which is used to control the leveling of a six-point supporting bridge-erecting platform vehicle platform. Background technique [0002] With the extensive use of various vehicle platforms, the automatic leveling system has also received more and more attention. Whether in military or civilian fields, there are applications of automatic leveling systems. For large heavy-duty platforms, affected by the geographical environment and the loading of the working platform, in order to prevent overturning and ensure the level of the working platform, an automatic leveling system must be used to level the mobile carrier. For a platform with a long span and a long space like a bridge erecting vehicle, in order to prevent the platform from overturning and serious deformation, it...

AI Technical Summary

Problems solved by technology

As the number of support points increases, virtual legs are likely to occur, and the "static indefinite times" of the platform also increases, and the corresponding automatic leveling system becomes more complicated

[0003] The Chinese patent application number is 200720169787.X, and the title of the invention is: "An automatic leveling device for a bridge erecting vehicle" refers to a large-span, long space, automatic leveling device for a bridge erecting vehicle using a six-point support platform , but in practical applications, this automatic leveling device has the following disadvantages: 1. A six-point support platform is formed by using a four-point support chassis and a two-support mobile frame. The automatic leveling process is divided into two parts, which are leveled separately , which increases the complexity of leveling and prolongs the entire leveling time

2. The environmental adaptability is poor, and the influence of uncertain factors such as detection of virtual legs and ground subsidence on the work of the entire bridging operation platform is not considered.

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