Single-shaft horizontally-arranged variable-track vibration exciter

Abstract

The invention discloses a single-shaft horizontally-arranged variable-track vibration exciter which comprises a vibrating case body, a spring and a base. The vibration exciter is characterized in that two telescopic rods are arranged on each side of the vibrating case body; the two telescopic rods are hinged with an upper connecting rod and a lower connecting rod to form a parallelogram mechanism; the two ends of the upper connecting rods, which are positioned on the two sides, are hinged with the upper pivot points of four telescopic rods and respectively fixed on a bearing seat and the vibrating case body which are positioned at the two ends of an eccentric shaft; and the two ends of the lower connecting rods are hinged with the pivot points of the lower ends of the four telescopic rodsand fixed in four arc-shaped adjuster slot holes which are formed on the base respectively. The invention has the most significant effect that different motion tracks, such as circular motion track, linear motion track and elliptic motion track, can be achieved in the same device by adjusting the slippage interval of the telescopic rods so as to meet the needs for different working conditions in the screening and feeding procedures. The vibration exciter disclosed by the invention has good excitation work-doing effects, high efficiency, low electricity consumption and low manufacturing cost, good vibration equilibrium, is convenient for maintenance, can be arranged horizontally during use and is convenient for adjustment. Besides, the traditional product can be transformed technically according to the technical scheme provided by the invention for improving the product performance.

Description

technical field [0001] The invention relates to the technical field of vibration machinery, in particular to a vibration exciter capable of realizing two functions of screening and feeding for mining machinery. Background technique [0002] So far, the mechanical exciters in the prior art are basically divided into three categories: circular, linear, and elliptical in terms of motion trajectories, and the exciter structures used are uniaxial, biaxial, and triaxial. That is, the single-axis vibrator realizes a circular motion trajectory, the two-axis vibrator realizes a linear motion trajectory, and the three-axis vibrator realizes an elliptical motion trajectory. Although there are many improvements and innovations, many inventions and invention patents have also been disclosed, such as patent No. 200920213889.6 patent name "uniaxial circular vibration track exciter for mechanical vibrating screen", patent No. 200310119021.7 patent name It is a "two-axis inertial vibrator",...

AI Technical Summary

Problems solved by technology

Therefore, the vibrator does not realize the conversion of the three motion trajectories of circle, straight line and ellipse in a practical sense.

②. It is inconvenient to adjust the direction angle

③. Due to the limitation of the structure of the motor, the eccentric force (that is, the exciting force) of the exciter is very limited, so it is only suitable for micro or small equipment, not suitable for medium and large equipment.

[0007] To sum up, in the prior art, if a single-axis vibrator is used, although the structure is simple, it must be placed obliquely, which greatly reduces the screening effect, and the height difference between the high and low ends of the vibrating box is large, occupying more space and Increased installation costs

However, although the multi-axis exciter can be placed horizontally to improve the effect of the excitation work, the mechanism consumes a lot of materials, the manufacturing difficulty is high (that is, the manufacturing cost is high), the direction angle adjustment is inconvenient, the power consumption is large, and the operating cost is high.

And the biggest shortcoming is that it is not possible to choose different motion trajectories in the same mechanism.

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