Hydraulic automatic adjustment jaw crusher

Abstract

The invention provides a hydraulic automatic adjustment jaw crusher. The crusher comprises a support oil cylinder, a tensioning oil cylinder, an oil tank, a support energy accumulator, a tensioning energy accumulator, a support overflow valve and an energy storage overflow valve as well as an out-stretching side branch circuit and retracting side branch circuit for the support oil cylinder, wherein the tensioning oil cylinder is connected with a tensioning side branch circuit and a loosening side branch circuit; the retracting side branch circuit is connected with the loosening side branch circuit; the support energy accumulator is connected with the retracting side branch circuit; the tensioning energy accumulator is connected with the tensioning side branch circuit; the support overflowvalve is connected with the out-stretching side branch circuit and the retracting side branch circuit; the energy storage overflow valve is connected with the retracting side branch circuit and the oil tank. When the hydraulic automatic adjustment jaw crusher withdraws automatically, the support energy accumulator supplements liquid for the piston rod of the support oil cylinder to guarantee thatthe piston rod does not have a phenomenon of emptiness due to absorption, the piston rod of the tensioning oil cylinder can always be maintained to apply constant tensioning force to a movable jaw towithdraw more stably, the safety of personnel and equipment is guaranteed, meanwhile, the automatic reset of discharge opening sizes can be realized, and the work efficiency is increased.

Description

technical field [0001] The invention relates to a hydraulic automatic adjustment jaw crusher. Background technique [0002] Jaw crusher is a widely used crusher, mainly for crushing stone ore with high hardness. The jaw crusher includes a movable jaw and a fixed jaw, and a variable-sized crushing cavity is formed between the movable jaw and the fixed jaw. The lower part makes the movable jaw swing reciprocatingly through the rib plate and the tightening oil cylinder, wherein, the two ends of the rib plate respectively lean against the tensioning oil cylinder and the supporting oil cylinder, and the diameter of the supporting oil cylinder is larger than that of the tensioning oil cylinder. The material enters the crushing cavity for crushing. When the material is too large and too hard to be crushed by the jaw crusher, the material will exert a pressing force on the movable jaw and the fixed jaw. At this time, the movable jaw needs to move away from the fixed jaw. The retra...

AI Technical Summary

Problems solved by technology

In the prior art, when the movable jaw is retracting, the tightening cylinder and the supporting cylinder will suffer from vacuum and negative pressure, and the tensioning cylinder cannot always exert a tension force on the movable jaw

Once such a phenomenon occurs, the extension of the piston rod of the subsequent tensioning cylinder and the piston rod of the supporting cylinder will not be smooth, and it will also cause certain damage to the equipment.

At the same time, in the prior art, the piston rod of the tightening cylinder uses a spring to apply a tension force to the movable jaw. To adjust the reset of the discharge port of the crusher, the jaw crusher needs to be stopped, and the spring is loosened. After the discharge port is adjusted Then manually adjust and tighten the piston rod of the oil cylinder to start the machine, which is inefficient

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