Experimental device and experimental system for elastic body coupling dynamic characteristics

A technology of dynamic characteristics and experimental devices, applied in the field of experimental devices, can solve the problems such as the inability to measure the coupling force between the elastic screen surface and the shear spring, ignoring the interaction force between the elastic screen surface and the material, etc.

Active Publication Date: 2022-02-11
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

[0002] At present, the research on the dynamic characteristics of the relaxation sieve is mainly based on the two-mass linear theory, which only considers the linear stiffness force and damping force of the shear spring, which provides a certain theoretical basis for the design and industrial application of the relaxation sieve. However, this theory ignores the interaction force between the elastic screen surface and the material. In fact, what really affects the dynamic characteristics of the relaxation screen main body and the floating screen frame is the coupling effect between the shear spring, the elastic screen surface and the material. Therefore, it is necessary to study the coupling force between the shear spring, the elastic screen surface and the material
[0003] Existing experimental devices can only measure the dynamic characteristics of the elastic screen surface under no-load or heavy-load conditions, but cannot measure the coupling force between the elastic screen surface and the shear spring

Method used

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  • Experimental device and experimental system for elastic body coupling dynamic characteristics
  • Experimental device and experimental system for elastic body coupling dynamic characteristics
  • Experimental device and experimental system for elastic body coupling dynamic characteristics

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Experimental program
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Embodiment 1

[0045] see Figure 1 to Figure 5 As shown, the elastic body coupling dynamics experiment device provided in the present application includes a sensor assembly 101 , a driving mechanism 102 and a shear spring assembly 103 .

[0046]Wherein, the sensor assembly 101 is connected with one end of the elastic body, and the driving mechanism 102 is connected with the other end of the elastic body and drives the elastic body to perform a relaxation movement; specifically, the elastic body shown in the figure is an elastic sieve plate 104, when the driving mechanism 102 When one end of the elastic sieve plate 104 is pulled, the sensor assembly 101 connected to the other end of the elastic sieve plate 104 can measure the stress of the elastic sieve plate 104 .

[0047] Simultaneously, the sensor assembly 101 is also connected with one side of the shear spring assembly 103, and the driving mechanism 102 is connected with the other side of the shear spring assembly 103 to apply a shearing...

Embodiment 2

[0062] The experimental device for elastic body coupling dynamic characteristics in the second embodiment is an improvement on the basis of the above-mentioned embodiment. The technical content disclosed in the above-mentioned embodiment will not be described repeatedly, and the content disclosed in the above-mentioned embodiment also belongs to the disclosure of the second embodiment. Content.

[0063] Since the relaxation movement of the elastic sieve plate 104 has a relatively large vibration intensity, the material larger than the sieve hole will quickly leave the screen surface during the experiment and spill from the surroundings of the elastic sieve plate 104. The effect of material on the elastic screen surface is quite different during layer screening, so that the dynamic characteristics of the interaction between the material and the elastic screen surface are not representative. In order to overcome the above-mentioned defects, in the optional scheme of this embodim...

Embodiment 3

[0069] Embodiment 3 of the present application provides an experimental system, including the elastic body coupling dynamic characteristic experimental device of any of the above-mentioned embodiments, thus having all the beneficial technical effects of the elastic body coupling dynamic characteristic experimental device of any of the above-mentioned embodiments , which will not be repeated here.

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Abstract

The present application relates to the field of experimental devices, in particular to an experimental device and an experimental system for elastic body coupling dynamic characteristics. The elastic body coupling dynamics experimental device includes a sensor assembly, a driving mechanism and a shear spring assembly; the sensor assembly is connected to one end of the elastic body, and the driving mechanism is connected to the other end of the elastic body to drive the The elastic body performs a relaxation movement; the sensor assembly is connected to one side of the shear spring assembly, and the drive mechanism is connected to the other side of the shear spring assembly to apply shear to the shear spring assembly Force; the sensor assembly is used to measure the coupling force of the elastic body and the shear spring assembly. The elastic body coupling dynamic characteristic experimental device provided by this application improves the stiffness and damping items of the existing two-mass mechanical model of the relaxation sieve, so that the kinematic laws of the main and floating sieve frames of the relaxation sieve can be accurately obtained.

Description

technical field [0001] The present application relates to the field of experimental devices, in particular to an experimental device and an experimental system for elastic body coupling dynamic characteristics. Background technique [0002] At present, the research on the dynamic characteristics of the relaxation sieve is mainly based on the two-mass linear theory, which only considers the linear stiffness force and damping force of the shear spring, which provides a certain theoretical basis for the design and industrial application of the relaxation sieve. However, this theory ignores the interaction force between the elastic screen surface and the material. In fact, what really affects the dynamic characteristics of the relaxation screen main body and the floating screen frame is the coupling effect between the shear spring, the elastic screen surface and the material. Therefore, it is necessary to study the coupling force between the shear spring, the elastic screen surf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 王新文林冬冬汤森王怡欣
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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