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Simulation method of mining hydraulic excavator excavating resistance

A technology of hydraulic excavators and simulation methods, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as lower product development efficiency, inaccurate results, and deviations in calculation results, so as to shorten design time and improve Calculation accuracy, effect of reducing test cost

Active Publication Date: 2015-09-16
菏泽建数智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the empirical formula method to calculate the excavation resistance, due to the few factors considered, there is a large deviation in the calculation results
On the one hand, methods such as experimental research and on-site testing are limited by sensor technology, making the results inaccurate; development efficiency

Method used

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  • Simulation method of mining hydraulic excavator excavating resistance
  • Simulation method of mining hydraulic excavator excavating resistance
  • Simulation method of mining hydraulic excavator excavating resistance

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Experimental program
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Embodiment 1

[0021] Embodiment 1 A kind of simulation method of mining hydraulic excavator excavation resistance, it is characterized in that: comprise the following steps:

[0022] 1) Construct the kinematics model of the hydraulic excavator in the multi-body dynamics simulation software ADAMS, and define its motion to simulate the typical excavation conditions of the front shovel hydraulic excavator;

[0023] 2) Analyze the ore gradation parameters and ore contact parameters in the actual ore heap, and use the non-sliding contact model to establish the ore heap constitutive model in EDEM, so that it forms the same natural angle of repose as the natural ore heap, where the gradation parameters include ore The size, shape, and size distribution ratio of the ore; ore contact parameters include collision recovery coefficient, static friction coefficient, and rolling friction coefficient;

[0024] 3) In the ore pile built by EDEM, refer to the kinematics model established in ADAMS to define t...

Embodiment 2

[0028] Embodiment 2 Take a certain 15 cubic meter large-scale front shovel hydraulic excavator as an example to further illustrate the present invention.

[0029] (1) Construction of a 15 cubic meter hydraulic excavator kinematics model

[0030] 1. The geometric modeling is completed in the 3D software UG, combined with the model parameters of the 15 cubic meter hydraulic excavator, and the model is appropriately simplified, leaving only the key working devices required for simulation, including: boom, stick, bucket , boom cylinder, stick cylinder, bucket cylinder, such as figure 2 shown. And export the model, convert it into a file in *.x_t format, and then import the file into ADAMS.

[0031] 2. The kinematics model in ADAMS includes three main working devices: boom, stick, bucket, and corresponding working cylinders: boom cylinder, stick cylinder, bucket cylinder. The boom is connected with the body through a rotary joint, the stick is connected with the boom through a ...

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Abstract

A simulation method of mining hydraulic excavator excavating resistance comprises the steps that 1. a dynamitic model of a hydraulic excavator is established in many-body dynamics simulation software ADAMS, the movement is defined, and the typical excavating working condition of a face shovel hydraulic excavator is simulated; 2. the ore gradation parameter and the ore contact parameter in a practical ore heap are analyzed, a non-sliding contact model is used for establishing an ore heap constitutive model in EDEM, a natural repose angle identical to a natural ore heap is formed on the model, and the ore contact parameter comprises a collision restoring coefficient, a static friction coefficient and a rolling friction coefficient; and 3. in an ore heap established by the EDEM, the dynamics model established in the ADAMS is subjected to referring, working device movement is defined, typical industry and mining excavating is carried out, and the excavating resistance on a bucket during excavating is obtained by measuring. The simulation method has the advantages that computing accuracy is improved, excavating resistance computing can be used in practical engineering, test cost is lowered, and designing time is shortened.

Description

technical field [0001] The invention relates to the technical field of multidisciplinary interactive simulation of hydraulic excavators, in particular to a simulation method for mining hydraulic excavator excavation resistance. Background technique [0002] During the loading process of the excavator, the excavation resistance consumes almost all the energy of the whole machine, which is a direct factor affecting the excavation capacity and loading efficiency. The excavation resistance determines the selection and calibration of parameters such as the mechanical structure strength and power of the excavator. Therefore, whether the excavation resistance can be accurately evaluated is directly related to the design and calibration level of the excavator. [0003] At present, the methods of obtaining excavation resistance in excavator design mainly include empirical formula method, laboratory research, field test and other methods. Using the empirical formula method to calcula...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 宁晓斌龙亚付志军陈烨周全李光李佳林谭磊
Owner 菏泽建数智能科技有限公司