Grease lubrication grease injection system for shield machine and grease lubrication grease injection method for shield machine

Abstract

The invention provides a grease lubrication grease injection system for a shield machine and a grease lubrication grease injection method for the shield machine. The grease lubrication grease injection system for the shield machine comprises a grease pump assembly, a pipeline A, a pipeline B, a pipeline C, a first grease tank and a second grease tank. The grease pump assembly is provided with a first control valve, wherein the grease pump assembly, the pipeline A, the pipeline C and the first grease tank are sequentially communicated. The pipeline C is provided with a second control valve. Thepipeline B, the second grease tank and the pipeline A are sequentially communicated. The pipeline B is provided with a third control valve. The first grease tank is internally provided with a first low liquid level sensor and a first high liquid level sensor. The second grease tank is internally provided with a second low liquid level sensor and a second high liquid level sensor. A lower computeris correspondingly connected with the first control valve, the second control valve, the third control valve, the first low liquid level sensor, the first high liquid level sensor, the second low liquid level sensor, the second high liquid level sensor and an upper computer. The grease lubrication grease injection system can realize automatic start or stop of grease injection into the first grease tank and the second grease tank.

Description

technical field [0001] The invention relates to the technical field of shield machines, in particular to a shield machine grease lubrication and grease injection system and a shield machine grease lubrication and grease injection method. Background technique [0002] The shield machine is often used in the excavation of subway tunnels, subsea tunnels, road tunnels, etc. Tunnel construction machinery that does not affect ground traffic during excavation. [0003] At present, the shield machine only has a high-low level alarm function for the lubrication device of the stirring shaft of the mortar stirring motor in the mortar tank. When the grease in the grease tank is low or high, the liquid level sensor is triggered to generate a high or low level in the main control room. Low-level alarm, and then the personnel operate the opening or closing of the grease pump valve group. If the operator fails to open or close the grease pump valve group in time, the bearing of the mortar ...

AI Technical Summary

Problems solved by technology

[0003] At present, the shield machine only has a high-low level alarm function for the lubrication device of the stirring shaft of the mortar stirring motor in the mortar tank. When the grease in the grease tank is low or high, the liquid level sensor is triggered to generate a high or low level in the main control room. Low-level alarm, and then the personnel operate the opening or closing of the grease pump valve group. If the operator fails to open or close the grease pump valve group in time, the bearing of the mortar mixing motor will be damaged due to insufficient lubrication or excessive grease injection. Secondly, there is no equipment on the pipeline. Alarm device, when the pipeline is blocked and the grease cannot be injected normally, it cannot be detected in time; the re-grease injection system cannot be automatically cycled to start and stop, and the stirring system will automatically stop stirring after 4 hours of starting. Timely detection will cause the mortar to condense in the mixing tank

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