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Pressure relief control method for energy accumulator of mining dump truck

A mining dump truck and control method technology, applied in the direction of fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of inability to guarantee emergency steering ability, pressure relief and creaking noises, etc., and achieve design layout or Easy modification, simple structure, simple and convenient operation

Active Publication Date: 2016-10-12
柳工(常州)矿山机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for controlling the pressure release of the accumulator of the mining dump truck. Pressure release squeaky problem

Method used

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  • Pressure relief control method for energy accumulator of mining dump truck
  • Pressure relief control method for energy accumulator of mining dump truck
  • Pressure relief control method for energy accumulator of mining dump truck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] figure 2 , image 3 The shown mine dump truck accumulator pressure release control method adopts a mining dump truck accumulator charging and releasing system;

[0021] The accumulator charging and releasing system of the mining dump truck includes an accumulator 3 connected to the hydraulic pump 5 through the charging valve assembly 1, the charging valve assembly 1, and a pressure charging channel is arranged in the charging valve assembly 1 G and the pressure relief channel X, a check valve 12 is arranged on the pressure charging channel G, and the accumulator 3 is connected with the hydraulic pump 5 through the pressure charging channel G; The pressure relief solenoid valve 11, the electric control end of the pressure relief solenoid valve 11 and a pressure switch 6 are connected in parallel with the main electric control unit 8 of the mining dump truck, and then connected in series with the power supply with the main switch 7; the main switch 7 is a double-pole sw...

Embodiment 2

[0025] like Figure 4 As shown, the main switch 7 is a single-pole double-throw switch; the rest are the same as the first embodiment.

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Abstract

The invention discloses a pressure relief control method for an energy accumulator of a mining dump truck, and belongs to the technical field of engineering machinery. The pressure relief control method comprises the following steps: when a main switch is turned off, a pressure in a system achieves a preset pressure range value of a pressure switch, a contact of the pressure switch is turned off, and meanwhile, a control end of a pressure relief electromagnetic valve is charged, the pressure relief electromagnetic valve is controlled to work at an upper position, pressure oil of the energy accumulator returns to an oil tank through the pressure relief electromagnetic valve, and a pressure of the energy accumulator is relieved; and when the pressure in the system is lowered to be out of the preset range of the pressure switch, the contact of the pressure switch is turned on, the control end of the pressure relief electromagnetic valve is uncharged, the pressure relief electromagnetic valve is controlled to work at a lower position, and the pressure relief is completed. The problems of incapacity of ensuring an emergency steering capability of the energy accumulator of the mining dump truck before safe stopping during the pressure relief, and a strange squeaking sound of throttle pressure relief can be solved.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a pressure relief control method for an accumulator of a mining dump truck. Background technique [0002] The accumulator of mining dump truck is an energy storage device in the hydraulic and pneumatic system of mining dump truck. figure 1 The shown mining dump truck accumulator charging and releasing system includes a steering module 22 correspondingly connected to the charging valve assembly 21 and an accumulator 23 connected to the hydraulic pump 25 through the charging valve assembly 21, A hydraulically controlled pressure relief valve 211 is connected to the pressure relief channel of the filling valve assembly 21 , and the pressure relief valve 211 controls the pressure relief of the accumulator 23 through the transmission oil pressure 24 connected to its control end. This mine dump truck accumulator exists during pressure relief: since the pressure relief pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/02F15B13/02
CPCF15B1/02F15B13/025
Inventor 吴韦林邓鸿彬朱长寿唐云娟李芸彭富民
Owner 柳工(常州)矿山机械有限公司
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