Spiral groove type hydraulic vibration commutator

Abstract

The invention discloses a spiral groove type hydraulic vibration commutator which comprises a shell, a mandrel, an oil cylinder and a hydraulic station. The mandrel can rotate in the shell; the upper part of the shell is provided with two holes used for connecting an upper cavity and a lower cavity of the oil cylinder; the side wall of the shell is provided with an oil inlet hole and an oil return hole which are in the same radial line with the two holes arranged at the upper part of the shell; and the mandrel is provided with two spiral grooves. The spiral groove type hydraulic vibration commutator has the advantages of adjustable vibration frequency, light machine part abrasion, low manufacture cost and little noise.

Description

technical field [0001] The invention relates to a hydraulic vibration device, in particular to a hydraulic vibration commutator which is especially suitable for use on a block forming machine. Background technique [0002] At present, the vibration system on the block forming machine mostly adopts a vibration box, that is, the vibration box is welded or fixed under the vibration platform with bolts. Two or four eccentric shafts are installed in the vibration box, and two synchronous motors are used to drive the eccentric shaft to rotate. , Vibration is generated by the centrifugal inertial force generated by the rotation of the eccentric shaft. Although a larger excitation force and a higher vibration frequency can be achieved, there are the following disadvantages: First, the vibration is generated by the centrifugal inertial force generated by the rotation of the eccentric shaft. The pure vertical up and down vibration cannot be achieved, resulting in accelerated wear of t...

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Problems solved by technology

[0002] At present, the vibration system on the block forming machine mostly adopts a vibration box, that is, the vibration box is welded or fixed under the vibration platform with bolts. Two or four eccentric shafts are installed in the vibration box, and two synchronous motors are used to drive the eccentric shaft to rotate. , Vibration is generated by the centrifugal inertial force generated by the rotation of the eccentric shaft. Although a larger excitation force and a higher vibration frequency can be achieved, there are the following disadvantages: First, the vibration is generated by the centrifugal inertial force generated by the rotation of the eccentric shaft. The pure vertical up and down vibration cannot be achieved, resulting in accelerated wear of the mold and early damage to the frame and other components, which reduces the reliability of the whole machine; secondly, due to the inability to achieve pure vertical up and down vibration, it is difficult to achieve a high dimensional viscosity of block products Standard requirements; third, a vibrating box needs two 5.5KW synchronous motors to drive the work, which wastes electricity and increases the cost of block products; fourth, the structure is complex and the manufacturing cost is high

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