Device and method for dynamically testing excavation resistance of excavator

A technology for dynamic testing and excavators, which is applied in the directions of measuring devices, testing of machines/structural components, surveying and navigation, etc. It can solve problems such as complex model building, cumbersome calculations, and inability to fully reflect the digging status of excavators, and achieve Guaranteed measurement range, improved measurement accuracy, good measurement accuracy and effectiveness

Pending Publication Date: 2022-04-01
XCMG EXCAVATOR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method conducts an integrated finite element analysis on the working device based on the regional planning of the working device, and obtains the maximum stress value and the corresponding area number of the boom, stick, bucket and the entire working device, presenting the maximum stress value and the spatial distribution of the area. The establishment of these models is too complicated, the calculation is cumbersome, and it cannot fully reflect the actual digging status of the excavator.

Method used

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  • Device and method for dynamically testing excavation resistance of excavator
  • Device and method for dynamically testing excavation resistance of excavator
  • Device and method for dynamically testing excavation resistance of excavator

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1 and figure 2 As shown, a dynamic test device for excavator excavation resistance includes a soil tank seat 2 arranged in the foundation pit 1, and the bottom side of the soil tank seat 2 is hinged with the bottom surface of the foundation pit 1 An angle sensor is also provided, and an inclination adjustment assembly 8 is arranged between the other side of the bottom and the bottom surface of the foundation pit 1. The soil tank seat 2 is provided with a soil tank 3, and the outer peripheral wall of the soil tank 3 A number of movable horizontal force sensors 9 are provided between the inner peripheral wall of the soil tank seat 2, and several horizontal force sensors 9 are arranged between the outer bottom wall of the soil tank 3 and the inner bottom wall of the soil tank seat 2. A movable vertical force sensor 10; the soil tank 3 is filled with a working medium 4 for the dynamic excavation resistance test, and the outer wall of the soil tank seat 2 an...

Embodiment 2

[0058] The difference between this embodiment and the first embodiment is that another bottom structure of the earth tank seat is provided.

[0059] The outer bottom wall of the soil tank seat 2 is provided with several guide shallow grooves, the guide shallow grooves are provided in one-to-one correspondence with the piston rod 802, and the guide shallow grooves are long strips arranged along the length direction. shallow groove; the end of the piston rod 802 is also provided with a rolling ball, and the rolling ball abuts in the shallow guide groove.

[0060] The setting of the guide shallow groove can play the role of guiding and limiting, and cooperate with the rolling ball to ensure that the soil tank seat 2 can be lifted or lowered smoothly without shaking.

Embodiment 3

[0062] Based on the excavator excavation resistance dynamic testing device described in Embodiment 1 and Embodiment 2, this embodiment provides a dynamic testing method for excavator excavation resistance, including the following steps:

[0063] (1) preparatory work, four vertical force sensors 10 are installed at the four corners of the bottom of the soil tank 3, and are used to measure the force in the vertical direction, and four horizontal force sensors are installed at the four corners of the side walls of the soil tank 3 9. It is used to measure the force in the horizontal direction, and then the working medium 4 is filled, and the filling height is not lower than the installation height of the uppermost horizontal force sensor 9; the sensor mounting seat and these force sensors are connected with the soil Slot 3 is relatively fixed;

[0064] (2) sensor calibration, after loading is completed, the four vertical force sensors 10 at the bottom of the soil tank 3 are initia...

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Abstract

The invention discloses an excavator excavation resistance dynamic testing device and method, and the device comprises a soil tank seat disposed in a foundation pit, one side of the bottom of the soil tank seat is movably hinged to the bottom surface of the foundation pit and is provided with an angle sensor, and an inclination angle adjustment assembly is disposed between the other side of the bottom of the soil tank seat and the bottom surface of the foundation pit. A soil tank is arranged in the soil tank seat, a plurality of movable horizontal force sensors are arranged between the outer peripheral wall of the soil tank and the inner peripheral wall of the soil tank seat, and a plurality of movable vertical force sensors are arranged between the outer bottom wall of the soil tank and the inner bottom wall of the soil tank seat; the soil tank is filled with a working medium for dynamic excavation resistance testing; the testing device is simple in structure and easy to install and use, the dynamic excavating resistance in the excavating operation process can be conveniently and accurately measured, and the measuring process is not limited by excavating operation materials and is also not limited by the structural form and the excavating mode of an excavator.

Description

technical field [0001] The invention relates to the technical field of excavating machinery testing, in particular to an excavator excavating resistance dynamic testing device and testing method. Background technique [0002] Excavator is a kind of construction machinery that is used and plays an important role in many fields such as national defense industry, civil construction, road and bridge construction. The test and verification of excavation resistance is a necessary input in the development and design of excavators. It is equal to the excavation force and opposite in direction, and is an important performance parameter of the excavator. [0003] At present, ground anchors are often used to test the excavation resistance of excavators. One end of the steel wire rope is fixed on the bucket teeth, and the other end is wound on the drum and connected to the ground. This method can measure the maximum excavation force under a certain posture, which is a static test; At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/16G01M99/00G01C9/00
Inventor 徐玉兵耿家文孙崇宋士超
Owner XCMG EXCAVATOR MACHINERY
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