Method for improving excavating control characteristic and leveling operation characteristic of excavator

An operation characteristic and excavator technology, applied in the field of excavator operation control, improving excavator operation characteristics and leveling operation characteristics, can solve the inconsistency between the bucket speed and the composite movement of the boom and stick, and increase the design and adjustment of pipelines. Problems such as complexity and difficulty, occupying the limited control pipeline of the control valve, etc., achieve the effect of increasing the function of fast reciprocating motion, improving labor efficiency, and improving utilization efficiency

Active Publication Date: 2011-08-03
XUZHOU XCMG MINING MACHINERY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when leveling the ground, the speed of movement of the boom, stick and bucket is a fixed parameter. The problems that existing excavators have when leveling the ground are: the boom is lifted too fast, and the reciprocating speed of the stick is not fast enough. Good, the bucket speed and the compound motion of the boom arm are out of coordination, out of synchronization, etc., which directly affect the performance of leveling operations.
However, because the size of the orifice is difficult to reasonably determine, the effect obtained by this method is not universal, and it also increases the complexity and difficulty of pipeline design and adjustment, occupying the limited control pipeline of the control valve

Method used

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  • Method for improving excavating control characteristic and leveling operation characteristic of excavator
  • Method for improving excavating control characteristic and leveling operation characteristic of excavator
  • Method for improving excavating control characteristic and leveling operation characteristic of excavator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment one: if figure 1 , figure 2 and image 3 As shown, in the "standard excavation mode" when the hydraulic control reversing valve 7 is not reversing, the operator controls the right control handle valve 5 to connect the boom lifting pilot control circuit, and the hydraulic oil enters the right side from the hydraulic oil tank 3 through the gear pump 2. The control handle valve 5 is supplied to the oil control inlet port P1 of the solenoid valve group 4 through the BOOM UP port. At this time, the P1 oil circuit of the solenoid valve group 4 is connected to the oil control output port A1, and the pilot oil flows into the hydraulic control port through the oil control output port A1. Oil control input port a1 of reversing valve 7. Since the hydraulic control reversing valve 7 has not reached the pressure condition required for reversing at this time, the oil control input port a1 of the hydraulic control reversing valve 7 is connected with the oil control outpu...

Embodiment 2

[0025] Embodiment two: if figure 1 , Figure 4 and Figure 5 As shown, when entering the "leveling operation mode", the solenoid valve group 4 will change direction after receiving the direction change instruction signal.

[0026] When carrying out the compound action operation of boom lifting and stick digging, control the right control handle valve 5 to make the boom lifting pilot control circuit communicated, the hydraulic oil enters the control right control handle valve 5 from the hydraulic oil tank 3 through the gear pump 2, and then passes through From the BOOM UP end to the control end XAb1 of the multi-way valve group 8, the P of the double hydraulic pump 1 after the spool is reversed 2 Working oil is supplied independently to realize boom lifting (boom oil cylinder 10 stretches out). After the working oil in the rod cavity of the boom cylinder 10 flows back through the multi-way valve group 8, it passes through the R 2 The end returns to the hydraulic oil tank 3 ...

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Abstract

The invention discloses a method for improving the excavating control characteristic and leveling operation characteristic of an excavator, and belongs to the technical field of hydraulic circuit devices. A hydraulic control reversing valve is arranged in a control circuit, which is used for controlling the confluence of a movable arm, of a hydraulic excavator; an electromagnetic valve group is arranged in the movable arm confluence control circuit and a bucket rod confluence control circuit; a controller sends a control signal to switch between an electromagnetic valve group open circuit mode and an electromagnetic valve group close circuit mode; the controller sends a signal to make an open circuit occur in the electromagnetic valve group, a valve core is recovered to a middle position, a movable arm lifting confluence circuit is recovered, and a bucket rod swing-out confluence circuit is switched off, so that a standard excavating mode is realized; and the controller sends a signal to make a close circuit occur in the electromagnetic valve group, the electromagnetic valve group switches off the movable arm lifting confluence circuit, and the bucket rod swing-out confluence circuit is switched on, so that a leveling operation mode is realized. The method has the advantages that: various actions can be coordinated and synchronously in-place in excavating operation and leveling operation, and production cost and maintenance cost are reduced while the using efficiency and control comfort of the excavator are improved.

Description

technical field [0001] The invention relates to an operation control method of an excavator, in particular to a method for improving the excavator's excavation manipulation characteristics and leveling operation characteristics, and belongs to the technical field of hydraulic circuit devices. Background technique [0002] Hydraulic excavators are currently widely used in engineering construction such as house foundation excavation and backfilling, pipeline laying, and farmland water conservancy construction. It has the advantages of flexible construction and high execution efficiency. The hydraulic excavator is mainly composed of a working device, a slewing mechanism, a walking mechanism, a turntable and a hydraulic control device. The circuit control multi-way valve group is realized by distributing the hydraulic oil supplied by the hydraulic pump. When performing excavation work on a construction site, it is often a combination of long periods of excavation and ground lev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F3/43E02F3/85F15B11/02F15B13/044
CPCE02F9/2285F15B2211/329E02F9/2282E02F9/2242F15B11/17F15B2211/20576E02F9/2292F15B2211/3116F15B2211/20546E02F3/844E02F9/2289E02F3/435E02F9/2296Y10T137/0318
Inventor 王勇张宏张升霞刘凯李宗张箭廖明军秦家升杨裕丰
Owner XUZHOU XCMG MINING MACHINERY CO LTD
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