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Loading device for program spectrum in fatigue test of turret of excavator

A fatigue test and loading device technology, applied in the field of mechanical equipment, can solve the problems of lack of excavator turntable fatigue test loading device, difficulty in accurate simulation of excavator turntable fatigue test, etc., and achieves easy test loading, results tend to be conservative and effective, The effect of securing the life limit

Pending Publication Date: 2019-03-29
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a loading device for the fatigue test program spectrum of the excavator turntable, to solve the lack in the prior art. For the loading device for the fatigue test of the excavator turntable, the excavator turntable fatigue test Problems that are difficult to simulate accurately

Method used

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  • Loading device for program spectrum in fatigue test of turret of excavator
  • Loading device for program spectrum in fatigue test of turret of excavator
  • Loading device for program spectrum in fatigue test of turret of excavator

Examples

Experimental program
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Effect test

Embodiment 1

[0046] This embodiment provides a loading device for fatigue test program spectrum of excavator turntable, such as Figure 1 to Figure 4 As shown, it includes a test bench 1, a gantry assembly 3, an actuator assembly 4 and an experimental base 5;

[0047] The test bench 1 includes a first base 11 and a second base 12, the first base 11 is installed on the experimental base 5, and one end of the second base 12 is hinged to the first base 11;

[0048] The gantry assembly 3 is installed on the experimental base 5, and the vertical position of the beam 32 of the gantry assembly 3 is adjustable;

[0049] One end of the actuator assembly 4 is installed on the longitudinal beam 33 of the gantry assembly 3 in an adjustable horizontal position;

[0050] The longitudinal beam 33 of the gantry assembly 3 is mounted on the crossbeam 32 of the gantry assembly 3 in an adjustable horizontal position.

[0051] The test bed 1 of the present embodiment is divided into a first base 11 and a se...

Embodiment 2

[0075] This embodiment provides an excavator turntable fatigue test program spectrum loading device, including a test bench 1, a gantry assembly 3, an actuator assembly 4 and an experimental base 5;

[0076] The test bench 1 is used to set the inclined working plane of the dynamic load loaded on the turntable fatigue test piece 2 by the actuator assembly 4 in the turntable fatigue test on the experimental base 5, and the inclination angle of the inclined working plane passes through the first The mechanical locking jack 15 within the angle between the abutment 11 and the second abutment 12 is adjusted;

[0077] The gantry assembly 3 is used to set the working space of the dynamic load loaded by the actuator assembly 4 on the turntable fatigue test piece 2 in the turntable fatigue test on the experimental base 5, and the working space is the space between the experimental base 5 and the gantry assembly 3. The space enclosed by the gantry column 31 and the beam 32 of the gantry ...

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Abstract

The invention provides a loading device for a program spectrum in a fatigue test of a turret of an excavator, which comprises a test bench, a fatigue test piece of the turret, a gantry assembly, an actuator assembly, and a test base. The test bench comprises a first base platform and a second base platform; the first base platform is arranged on the test base; and one end of the second base platform is hinged to the first base platform. The fatigue test piece of the turret is arranged on the second base. The gantry assembly is arranged on the test base. And one end of the actuator assembly isarranged on the gantry assembly, and the other end of the actuator assembly is arranged on the fatigue test piece of the turret. The loading device carry on the fatigue test under a local coordinate system, and considers the influence of the attitude change of the excavator on the test result of the fatigue test piece of the turret, so that the fatigue test piece of the turret is closer to the actual stress state. The loading device can make the fatigue test of different types of turret to use the same device for loading, through a movable test abutment and a variable-angle fatigue test bench,thereby improving the universality of the test device. The device is simple in structure and easy to maintain.

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 turntable fatigue test program spectrum loading device. Background technique [0002] As an important part of the excavator, the turntable is mainly used to connect various parts of the excavator and bear the alternating load from the working device. The quality of its structure directly affects the service life and reliability of the excavator. Fatigue cracks on the excavator turntable are the main reason for the structural damage of the excavator turntable. The fatigue life test of the turntable is an important means to ensure its structural safety and service life. [0003] When doing fatigue tests, the turntable needs to be fixed at a certain attitude. It is easy to determine the test attitude of components with fixed load bearing direction and constant working attitude, but the attitude of the excavator changes all the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 吕彭民向清怡黄炳雷
Owner CHANGAN UNIV