Hydraulic system of anti-seismic steel bar rolling line

Abstract

The invention discloses a hydraulic system of an anti-seismic steel bar rolling line. The hydraulic system comprises an oil tank, main pumps and a high-pressure main oil circuit. A plurality of oil delivering pipes are arranged on the oil tank and connected with the main pumps correspondingly. Outlets of the main pumps are connected to the high-pressure main oil circuit, and the main pumps and thehigh-pressure main oil circuit are provided with first filters. The high-pressure main oil circuit is provided with a pressure relay. The pressure relay is connected with a main oil circuit overflowvalve. An overflow port of the main oil circuit overflow valve returns flow back to the oil tank through an oil drainage pipeline. Branch overflow valves are arranged on pipelines between the main pumps and the first filters. Overflow ports of the branch overflow valves are connected to the oil drainage pipeline. According to the hydraulic system, the multiple main pumps are adopted to be connected to the high-pressure main oil circuit, it is ensured that the stable hydraulic flow rate and pressure can be provided, thus the accuracy of rolling control is ensured, the production quality of rolled parts is ensured, impurities in hydraulic oil are effectively filtered out, the purity of the hydraulic oil is improved, the jamming situation of a hydraulic component is avoided, the accuracy of rolling control is further ensured, and the production quality of a product is improved.

Description

technical field

[0001] The invention relates to the technical field of steel rolling production, in particular to a hydraulic system for an anti-seismic steel bar rolling line. Background technique

[0002] In steel rolling production, hydraulic rolling mainly realizes the acquisition of rolling force by adjusting the pressure and position of two hydraulic cylinders located at the bottom of the rolling mill stand. The performance and surface smoothness can be effectively improved. In order to ensure the rolling precision of the rolled piece, the hydraulic control precision must be guaranteed. The existing rolling line hydraulic system is difficult to control the flow and pressure of hydraulic oil stably, the system pressure is unstable, and the control error is large, so it is difficult to guarantee the precision of the rolled piece, and the production quality is poor. Contents of the invention

[0003] The technical problem to be solved and the technical task proposed by...

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