Variable-track single-axle excitation vibrator

Abstract

The invention discloses a variable-track single-axle excitation vibrator, which comprises a vibrating case, a base and an eccentric shaft. The vibrating case is arranged on the base, buffer springs are arranged between the vibrating case and the base, the eccentric shaft is arranged on the vibrating case, a track determination bar assembly arranged obliquely is arranged between the vibrating case and the base and perpendicular to the fixed axis of the eccentric shaft, and two ends of the track determination bar assembly are respectively hinged to the vibrating case and the base. The variable-track single-axle excitation vibrator has the advantages that circular motion track of the single-axle excitation vibrator is changed into the linear or elliptical motion track by the aid of the design of the track determination bar assembly so that excitation vibration effect and efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of vibrating machinery, in particular to an exciter assembly used in vibrating screens and feeders in mining machinery, and more specifically to a single-axis variable trajectory exciter. Background technique [0002] So far, the mechanical exciters in the prior art are basically divided into three categories: circular, straight, and elliptical in terms of motion trajectory, and the exciter structures used are three types: uniaxial, biaxial, and triaxial. The single-axis vibrator realizes the circular motion trajectory, the double-axis vibrator realizes the linear motion trajectory, and the three-axis vibrator realizes the elliptical motion trajectory. Although there are many improvements and innovations, many inventions and utility model patents have been disclosed. For example, the patent No. 200920213889.6 is named "Single-axis circular vibration track exciter for mechanical vibrating screens", and the pa...

AI Technical Summary

Problems solved by technology

But the disadvantages are complex structure, high manufacturing cost and high power consumption

Moreover, when adjusting the direction angle of a three-axis vibrator (including a biaxial vibrator), it is necessary to open the vibrator to disassemble and assemble the ring gear (that is, by adjusting the eccentric phase angle difference of each excitation axis), which is very inconvenient. It is up to the user Error prone to self-tuning

[0006] The biggest shortcoming of the existing technology is that basically a vibrator can only realize one kind of movement trajectory, but cannot realize the conversion between different movement paths in the same device

[0007] To sum up, in the prior art, although the single-axis vibrator is simple in structure, it must be placed obliquely, which greatly reduces the screening effect, and the high and low ends of the vibrating box have a large drop, occupying more space and Increased installation costs; multi-axis exciters can be placed horizontally and improve the effect of excitation, but the mechanism consumes a lot of materials, making it difficult to manufacture (that is, high operating costs), and it is inconvenient to adjust the direction angle; the largest The disadvantage is that different motion trajectories cannot be selected in the same mechanism

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