One-liquid-chamber two-gas-chamber overpressure buffer balancing device for hydraulic system

Abstract

An overpressure buffer balancing device for mine material crushing equipment hydraulic system is characterized in that a buffer balancing cylinder is arranged in the balancing device, and composed of a cylinder body, a gas-liquid isolation piston, a floating piston and a throttling adjusting rod; and the gas-liquid isolation piston and the floating piston are arranged in the cylinder body to divide the cylinder body into three spaces, the gas-liquid isolation piston and one end of the cylinder body constitute a liquid chamber connected with the oil path of a main hydraulic oil cylinder, one end of the throttling adjustment rod and the gas-liquid isolation piston are fixedly connected, the other end of the throttling adjustment rod is fitted with a conical hole in the floating piston to form a first gas chamber, the other end of the cylinder body and the floating piston form a second gas chamber, and the first gas chamber is communicated with a high pressure gas source pipeline. The inventive balancing device can be used to change the gas chamber expansion rate, absorb the impact pressure of crushing equipment, automatically adjust the size of a discharging port and avoid impact damage to the crushing equipment.

Description

technical field [0001] The invention belongs to the technical field of hydraulic equipment used in mining machinery, and in particular relates to an overpressure buffering and balancing device for a hydraulic system of mining material crushing equipment. Background technique [0002] After the ore is mined from the mine, processing and crushing into suitable pieces has become the first process of ore processing. Due to the uneven size of the ore, the large or super large crushing machinery equipment such as the gyratory crusher is often used first. The ore is initially crushed to a particle size of ≤200mm. When crushing, the crushing cone moves back and forth in the cone cavity of the crusher shell, and the crushing cone exerts great extrusion, splitting and bending effects on the material, which greatly changes the diameter of ores or rocks with various hardnesses. It is crushed, which is beneficial to the subsequent intermediate crushing and processing. Compared with oth...

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Problems solved by technology

[0003] At present, the design and production of domestic gyratory crushers have made great progress, but there is still a certain gap with foreign products of the same type in terms of specifications, output, reliability of the whole machine, and reliability of main components.

In particular, how to balance the overload force of the main shaft, effectively adjust the ore discharge port of the crusher and deal with the protection problem of "over-iron" has not been an ideal solution, resulting in equipment damage, shutdown repair accidents occur from time to time, affecting the operation of the entire production line Efficiency has attracted widespread attention from researchers

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