A hydraulic double roll crusher

Abstract

The invention discloses a hydraulic double-roll crusher and a hydraulic system thereof. The hydraulic double-roll crusher comprises a crusher frame, a fixed roller set, a movable roller set, a power device and a hydraulic system, wherein a protective executing mechanism and a discharge hole adjusting mechanism are arranged on the movable roller set; the protective executing mechanism comprises a hydraulic cylinder and a piston rod; the piston rod is connected with the movable roller set; the discharge hole adjusting mechanism comprises a small cylinder and a cushion block; and the small cylinder is connected with a slide block. The hydraulic cylinder with the piston rod is arranged on the movable roller set, so that the unreasonable structure that the spring serves as the protective executing mechanism in the past is changed, deviation of the movable roller set is prevented, the crusher has high safety and use performances and long service life, and the reaction sensitivity through iron is improved. Due to arrangement of the small cylinder, the size of the discharge hole is controlled in a hydraulic adjusting manner. Compared with the traditional spring adjustment, the hydraulic double-roll crusher has the advantages of high accuracy, convenience and the like.

Description

【Technical field】 [0001] The invention relates to mining machinery equipment, in particular to a hydraulic double-roller crusher and a hydraulic system. 【Background technique】 [0002] The crusher is a kind of mining machinery and equipment. During the working process of the crusher, the super hard materials will enter the crushing chamber. If the materials in the crushing chamber are not cleaned in time, other parts in the crusher will be easily damaged. When the crushed ore needs to be adjusted When the size is large, it is necessary to adjust the size of the discharge opening and adjust the gap between the fixed and moving roller groups. [0003] The current iron protection and outlet adjustment of the existing crusher are both spring-type. The working principle of the spring-type protection mechanism is: when the super hard material enters the crushing chamber, the movable roller group and the fixed roller group are squeezed, and the movable roller group moves backward. ...

AI Technical Summary

Problems solved by technology

However, this device has three defects: 1. The moving roller group is prone to deflection when crushing materials; 2. The high-frequency reciprocating motion of the spring causes spring fatigue and a decrease in mechanical properties, resulting in a short service life

3. Since the elastic force is directly proportional to the compression of the spring, when iron passing occurs, the larger the size of the material, the greater the elastic force, and the protective performance of the iron passing protection mechanism will be weakened

[0004] Since the adjustment of the size of the discharge port adopts spring-type adjustment, the adjustment of the size of the discharge port needs to be carried out in the power-on state. The operation method has a great risk of personal injury to the operator, and the adjustment accuracy is low, time-consuming and labor-intensive.

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