Single-spindle vibration exciter self-synchronizing synthesis linear track large-scale screening machine

Abstract

The invention provides a single-spindle vibration exciter self-synchronizing synthesis linear track large-scale screening machine and belongs to the field of vibrating screening machines. Through thesingle-spindle vibration exciter self-synchronizing synthesis linear track large-scale screening machine, the problems existing in large-scale development of self-synchronizing linear vibrating screens are solved. Four sets of vibration exciters correspond in pairs and are mounted on side plates on the two sides of a screen frame and a middle side plate. Each set of vibration exciters includes three vibration exciters which are mounted on the side plates on the two sides and the middle side plate correspondingly. The first set of vibration exciters and the second set of vibration exciters aremounted on the front row of the screen frame in opposite rotating directions and generate an acting line L1 of resultant force, and the included angle alpha between L1 and the screen surface is equalto 30 degrees-50 degrees. The third set of vibration exciters and the fourth set of vibration exciters are mounted on the rear row of the screen frame in the opposite rotating directions and generatean acting line L2 of resultant force, and the included angle alpha between L2 and the screen surface is equal to 30 degrees-50 degrees. L1 is parallel to L2, and the acting line L3 of resultant forcepasses through the vibrating gravity center G of the screening machine. The single-spindle vibration exciter self-synchronizing synthesis linear track large-scale screening machine has the characteristics that excitation force is large, the service life of bearings is long, the stiffness of the screen frame is high, and the screening machine is uniform in stress and stable in operation, and is suitable for large-scale development of the linear vibrating screens.

Description

technical field [0001] The invention belongs to the field of vibrating and screening machinery, and mainly relates to a plurality of single-axis vibrators evenly arranged on the screen frame, which can increase the size of the vibrating screen and the screening area, and the single-axis vibrator can self-synchronize and synthesize a large-scale linear track. ext. Background technique [0002] The existing large-scale linear vibrating screen generally has a screen surface width of 3.0m to 3.6m and a length of 6.1m to 7.3m. The vibration principle of the vibrator often adopts the principle of forced synchronous vibration or self-synchronous vibration. The principle of self-synchronous vibration is Two sets of uniaxial eccentric block vibrators are used, which run in opposite directions to produce linear vibration tracks. Two sets of single-axis eccentric block vibrators are installed on the side plates on both sides of the vibrating screen, connected by universal drive shafts...

AI Technical Summary

Problems solved by technology

Because the exciters of the large-scale linear vibrating screen are arranged and installed on the screen frame in a concentrated manner, the operating reliability of the screen machine is low, the rigidity of the screen frame is poor, and the service life is short

For ultra-large linear vibrating screens, if the number of uniaxial eccentric block vibrators installed is small, the vibrating force cannot meet the requirements, and the screen frame is too wide, the span of the two vibrators on the coaxial line is too far, and the exciter The vibration force is not evenly transmitted to the screen frame, which reduces the stability of the screen frame operation

With such an exciter installation structure, if the number of exciters is increased or the excitation force of a single exciter is increased, the concentrated excitation force acting on the screen frame will affect the life of the screen frame or the vibration exciter bearing. cause serious impact

Due to the shortening of the life of the vibrator bearing, the exciting force cannot be increased, resulting in the size and size of the vibrating screen and the screening area cannot be increased, which hinders the development of large-scale vibrating screens

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