Internal and external eccentric block combined type vibration exciter

Abstract

The invention provides an internal and external eccentric block combined type vibration exciter comprising a synchronous shaft and two bearing pedestals symmetrically arranged. A rolling bearing is assembled in each bearing pedestal. The synchronous shaft is installed on the bearing pedestals through the rolling bearings in a rotatable manner. The two ends of the synchronous shaft penetrate through the two bearing pedestals correspondingly. Multiple internal eccentric blocks and external eccentric blocks are sequentially installed on the synchronous shaft from the center position to the two ends. A protection barrel is installed between the two bearing pedestals and is arranged outside the synchronous shaft in a sleeving manner. The internal eccentric blocks are arranged in the protectionbarrel between the bearing pedestals. The external eccentric blocks are arranged outside the protection barrel. A belt wheel is installed at one end of the synchronous shaft. Existing eccentric shaftsare replaced with the two internal eccentric blocks, the weight of the whole machine is decreased, valid vibration excitation force is increased, and the machining efficiency and precision of the shaft can be improved. The internal eccentric blocks and the external eccentric blocks have a balance effect, the bending force stress borne by a connecting shaft can be reduced, and synchronicity of thevibration excitation force on the two sides is ensured.

Description

【Technical field】 [0001] The invention relates to the technical field of exciters, in particular to an exciter with a combination of inner and outer eccentric blocks. 【Background technique】 [0002] The exciter is the vibration source of the vibrating screen and feeder. At present, vibrating screens generally use eccentric block type exciters and eccentric shaft type exciters. The excitation force of eccentric block type exciters often cannot meet the load requirements of large-scale vibrating screens; Large, but the mass of the eccentric shaft itself is relatively large, so part of the excitation force is consumed by the eccentric shaft itself, resulting in energy waste, and the processing cost of the eccentric shaft is high, the processing efficiency is low, and the processing is difficult. Therefore, a combination of internal and external eccentric blocks is proposed type vibrator. 【Content of invention】 [0003] The purpose of the present invention is to solve the pr...

AI Technical Summary

Problems solved by technology

At present, vibrating screens generally use eccentric block type exciters and eccentric shaft type exciters. The excitation force of eccentric block type exciters often cannot meet the load requirements of large-scale vibrating screens; Large, but the mass of the eccentric shaft itself is relatively large, so part of the excitation force is consumed by the eccentric shaft itself, resulting in energy waste, and the processing cost of the eccentric shaft is high, the processing efficiency is low, and the processing is difficult. Therefore, a combination of internal and external eccentric blocks is proposed vibration exciter

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