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Double-motor-driven spatial motion vibration crusher and parameter determination method thereof

A technology of space movement and dual-machine drive, applied in complex mathematical operations, electrical digital data processing, CAD numerical modeling, etc., can solve problems such as low crushing efficiency, high processing costs, and equipment failures, and achieve improved crushing and production efficiency , improve synchronization stability and improve service life

Pending Publication Date: 2021-07-13
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. When the existing jaw crusher is working, only the movable jaw and the static jaw move relative to each other, and the material is crushed by one-way extrusion, the crushing efficiency is low, and the crushing effect is not ideal
[0005] 2. At present, the impact generated during the crushing process of most jaw crushers is directly transmitted to the exciter, which may easily cause equipment failure; in addition, due to the impact of the exciter, the speed fluctuates greatly, and the reliability of the excitation system is poor, especially In the vibration self-synchronization system, the shock of the exciter makes the synchronization of the system poor, which affects the process effect of the equipment
[0006] 3. In order to improve work efficiency, other methods are generally used in engineering to improve the function of jaw crushers, but these methods will lead to complex structure, large volume and high processing cost

Method used

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  • Double-motor-driven spatial motion vibration crusher and parameter determination method thereof
  • Double-motor-driven spatial motion vibration crusher and parameter determination method thereof
  • Double-motor-driven spatial motion vibration crusher and parameter determination method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0192] In this case study h 1 , h 2 Influence on the system, introduce parameter η, defined as η=h 2 / h 1 , where h 1 is the distance between the center of mass of the pendulum and the midpoint of the line connecting the centers of rotation of the two exciters, h 2 is the distance between the center of mass of the body and the center of mass of the pendulum. Parameters of the assumed vibration system: M 1 =550kg, M 2 =1600kg, m 0 = 30kg, l 0 = h 3 =0.3m,J ψx =J ψy =500kg·m 2 , J ψz =300kg·m 2 , r=0.15m, k x =k y =k z =10KN / m,k 1θ =k 2θ =10KN / m.

[0193] (a)h 1 The effect of and η on the stable phase difference

[0194] figure 2 Indicates the stable phase difference curve of the system. It can be seen from the figure that at h 1 Under changing conditions, the stable phase difference of the system is not affected by η, that is, the system is in the three cases (h 1 =0.4~0.6), the stable phase difference 2α is approximately 0°, and the two exciters move ...

Embodiment 2

[0206] In order to judge the correctness of the differential equations derived in the previous section, and to initially study the possible kinematics and dynamics of the space-moving two-machine-driven single pendulum system, this example uses the fourth-order Runge-Kutta program to simulate the vibration system. The parameters in the simulation program are the same as those in the numerical analysis of the previous example. This example will give 4 groups of simulations.

[0207] (a) h 1 =0.4m, simulation under the condition of η=1.3

[0208] Figure 7 Indicates the simulation results of group A. from Figure 7 It can be seen from (a) that when the system starts to work, since the two exciters are identical, the acceleration of the two motors is the same. When the system reaches synchronous operation, the speed of the two motors is stable. At time 40s, motor 2 was disturbed by π / 6, and the rotational speeds of the two motors fluctuated, but eventually returned to stabi...

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Abstract

The invention discloses a double-motor-driven spatial motion vibration crusher and a parameter determination method thereof. Two vibration exciters are symmetrically mounted on a pendulum; the pendulum is installed on the main working machine body through a torsion shaft, and the rotation plane of the pendulum and the motion plane of the vibration exciter are arranged in a space crossing mode; the main working machine body is connected with the fixed rack through the vibration isolation spring; and when the two eccentric rotors rotating reversely are driven by the induction motor to rotate around respective rotating shafts in a self-synchronizing mode at the zero phase difference, the pendulum bob is driven to swing around the torsion shaft at a certain swing angle. A motion differential equation is established through a kinetic model, and vibration response, synchronism criteria and stability criteria of a synchronous state are deduced. The invention further researches the influence of main parameter configuration on the motion characteristics of the system, and finally verifies the correctness of the result through a numerical simulation experiment. The crusher can improve the material crushing efficiency, prolongs the service life of parts of the crusher, and has the advantages of compact structure, small occupied area and the like.

Description

[0001] field of invention [0002] The invention belongs to the technical field of vibrating devices, and relates to a two-machine-driven space-motion vibrating crusher and a parameter determination method thereof. Background technique [0003] The vibrating crusher is an industrial equipment that uses vibration to crush materials to achieve rapid dissociation of materials. Vibrating crushers are widely used in the construction and mining industries due to their strong crushing force and good reliability. The invention belongs to a jaw vibrating crusher in the form of space movement. Ordinary jaw vibrating crushers will have some problems as follows: [0004] 1. When the existing jaw crusher is working, only the movable jaw and the static jaw move relative to each other, and the materials are crushed by one-way extrusion, which results in low crushing efficiency and unsatisfactory crushing effect. [0005] 2. At present, the impact generated during the crushing process of m...

Claims

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Application Information

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IPC IPC(8): G06F30/17G06F30/20G06F17/13G06F17/14B02C19/16G06F111/04G06F111/10G06F119/14
CPCG06F30/17G06F30/20G06F17/13G06F17/14B02C19/16G06F2111/04G06F2111/10G06F2119/14Y02T90/00
Inventor 张学良张伟陈为昊胡文超李振民任朝晖闻邦椿
Owner NORTHEASTERN UNIV
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