Leveling method and system for engineering vehicle's supporting legs

Leveling method and system for engineering vehicle's supporting legs

CN
  • CN 1,093,056 C
  • Filed: 04/28/1994
  • Issued: 10/23/2002
  • Est. Priority Date: 03/31/1994
  • Status: Active Grant
First Claim
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1. simple in structure a, good reliability, engineering truck leveling system that cost is low;

  • Be divided into two kinds of automatic leveling and manual leveling, automatically leveling is provided with automatic leveling hydraulic efficiency pressure system and Circuits System, be applied to require the engineering truck of high precision leveling, and be provided with a horizontal detection instrument, automatic guidance electromagnetic valve (5a, 5b, 5c, 5d) leveling and detection level are carried out in the left side of engineering truck, forward and backward, the right side;

    Manual leveling is provided with a hydraulic efficiency pressure system, is applied to common engineering truck leveling, also is provided with a multidigit hydraulic valve, rotating valve piece switching oil circuit in the system, and is provided with a finished product hand operation change-over valve, and this system also can establish a common level indicator, also can not establish;

    Automatically two supporting leg levelling principle are used in the leveling of the front, rear, left and right of the engineering truck of leveling and manual leveling, thereby leveling is not fast, can produce the situation that single supporting leg does not land;

    In order to realize the leveling purpose of engineering truck, this project car is provided with four supporting legs, be front leg strut (A, B) and rear support leg (D, C), supporting leg (A, B) is corresponding one by one on the y direction with supporting leg (D, C), and supporting leg (A, D) is corresponding one by one on the x direction with supporting leg (B, C);

    What the control supporting leg was flexible is electromagnetic valve group or multidigit hydraulic valve;

    Wherein, described engineering truck leveling may further comprise the steps in principle and method;

    A) simultaneously to all support oil cylinders for hydraulic oil, supporting leg stretched and all land;

    B) stretch out height to row'"'"'s support oil cylinder on the low side for the hydraulic oil adjusting simultaneously, so that engineering truck is up to the standard on the y direction;

    C) supply hydraulic oil to termination paired support oil cylinder on the low side simultaneously again, regulate and stretch out height, so that engineering truck is up to the standard on the x direction;

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