Unlock instant, AI-driven research and patent intelligence for your innovation.

Excavator bucket rod load spectrum fatigue testing device

A fatigue test and load spectrum technology, applied in the field of mechanical equipment, can solve the problems of inaccurate simulation of the force state of the excavator stick, achieve conservative and effective results, ensure the life limit, and avoid errors

Pending Publication Date: 2019-03-22
CHANGAN UNIV
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the object of the present invention is to provide an excavator arm load spectrum fatigue test device to solve the problem that the excavator arm fatigue load spectrum loading device in the prior art cannot accurately simulate excavation The problem of the actual force state of the machine stick

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Excavator bucket rod load spectrum fatigue testing device
  • Excavator bucket rod load spectrum fatigue testing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides an excavator arm load spectrum fatigue test device, such as Figure 1 to Figure 2 As shown, it includes a test base 1, and also includes a load-bearing connection assembly 2, a gantry assembly 3 and an actuator assembly 4 installed on the test base 1;

[0041] The load-bearing connection assembly 2 includes a fixed support 21 installed on the test base 1, a load-bearing flat beam 22 is installed on the fixed support 21, and a first connection seat 23 and a second connection seat 24 are installed on the load-bearing flat beam 22. The installation position of the second connecting seat 24 on the load-bearing flat beam 22 is horizontally adjustable, and the first connecting seat 23 is equipped with a stick connecting rod 25, and the stick connecting rod 25 is hinged with the first connecting seat 23;

[0042] The gantry assembly 3 comprises a gantry column 31 installed on the test base 1. A crossbeam 32 is installed on the gantry column 31. The ins...

Embodiment 2

[0068] This embodiment provides an excavator arm load spectrum fatigue test device, which includes a test base 1, and also includes a load-bearing connection assembly 2, a gantry assembly 3, and an actuator assembly 4 installed on the test base 1;

[0069] The load-bearing connection assembly 2 is used to set the horizontal working surface of the dynamic load loaded by the actuator assembly 4 on the arm fatigue specimen 5 in the arm load spectrum fatigue test on the test base 1, and the arm fatigue specimen 5 is in the horizontal The installation position in the working surface is adjusted through the second connection seat 24 of the bearing connection assembly 2;

[0070] The gantry assembly 3 is used to set the vertical working surface of the dynamic load loaded by the actuator assembly 4 on the arm fatigue test piece 5 in the arm load spectrum fatigue test on the test base 1;

[0071] The actuator assembly 4 is installed on the crossbeam 32 of the gantry assembly 3 and the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an excavator bucket rod load spectrum fatigue testing device. The excavator bucket rod load spectrum fatigue testing device comprises a testing base station, a bearing and connecting assembly mounted on the testing base station, a portal frame assembly and an actuator assembly. A bucket rod component carries out a load spectrum fatigue test in a local coordinate system, andtherefore errors caused by posture determination can be avoided. A hinge rod part in the device and the horizontal plane form a certain geometric angle, the load spectrum fatigue test that the centerline of the hinge point of a bucket rod oil cylinder and a bucket rod and the hinge point of a bucket and the bucket rod has a certain angle can be achieved, and therefore the bucket rod in the testing device is closer to the actual stress state. The excavator bucket rod load spectrum fatigue testing device can be suitable for fatigue tests of bucket rods of different types, a self-balance mechanism is formed by the whole device through a bearing flat beam and an equalizing beam, dynamic loads generated by the actuator becomes internal force, and the action on a laboratory base and surroundingwalls during the fatigue tests is reduced.

Description

technical field [0001] The invention belongs to the field of mechanical equipment and relates to a mechanical fatigue test, in particular to an excavator arm load spectrum fatigue test device. Background technique [0002] The working device is the main working part of the excavator, and it is also the main force-bearing device. Its structure and fatigue performance are good or bad, especially the performance of the arm of the welded box structure, which directly affects the reliability and life of the excavator. Moreover, the working load of the excavator is complex and changeable. Due to the long-term alternating load, the key parts of the working device are prone to fatigue damage. Fatigue fracture is the main cause of damage to the working device of the excavator. Fatigue test is a powerful means of fatigue research, which is of great significance to improve the fatigue reliability of excavator working devices and ensure the normal service of structures. Therefore, the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 吕彭民向清怡庞利叶
Owner CHANGAN UNIV