Tunneling angle fine-tuning device of shield machine

Abstract

The invention discloses a fine adjustment device for the tunneling angle of a shield machine. When an angle controller of the fine adjustment device controls and adjusts the angle, the angle controller first adjusts the angle to a required angle by using a hydraulic cylinder, then in the tunneling process, a telescopic compensation assembly is responsible for compensating the displacement expansion-and-contraction value of the hydraulic cylinder caused by a tunneling force according to the real-time detection value of an angle detecting assembly, the tunneling precision can be greatly improved, and the adjustment efficiency of the tunneling angle is ensured. A splicing assembly method of four branch connecting blocks is adopted to realize the split type assembly effect of a tunneling plate, when scrapper blades on the tunneling plate are damaged, only scrapper blades on the branch connecting blocks at the corresponding positions are replaced while self-stability of the tunneling plateis ensured, and trouble brought by the overall replacement of the tunneling plate is avoided. The independent fine adjustment effect of the tunneling angle of the scrapper blades on the tunneling plate is realized, so that adjustment operation of the tunneling angle of the scrapper blades at different positions can be independently realized, and the tunneling angle of the scrapper blades is greatly improved.

Description

technical field [0001] The invention relates to a shield machine, in particular to a fine adjustment device for the tunneling angle of the shield machine. Background technique [0002] A shield machine is a tunnel boring machine that uses the shield method. The shield construction method is the "shield" that the roadheader builds the tunnel while digging. It is different from the open construction method. Internationally, the generalized shield machine can also be used in rock formations, but it is different from the open tunnel boring machine. , and in our country, it is customary to call the tunnel boring machine used for soft soil stratum as shield machine, and the tunnel boring machine for rock stratum as full-section tunnel boring machine. The digging angle of the scraper is fine-tuned to improve the comprehensiveness of the digging angle of the scraper. [0003] When the existing fine-tuning device for the tunneling angle of the shield machine is used to adjust the t...

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Problems solved by technology

[0003] When the existing fine-tuning device for the tunneling angle of the shield machine is used to adjust the tunneling angle of the scraper, it is usually only able to perform an overall fine-tuning operation on the scraper, resulting in the change of the overall tunneling angle of the scraper, thereby increasing the adjustment range of the tunneling angle of the scraper. At the same time, in the adjustment process, the cleanliness of the adjustment mechanism cannot be effectively protected, and dust and soil pollution are prone to occur. In addition, when adjusting the angle, it is generally adjusted by a hydraulic cylinder, and the hydraulic cylinder is driven by hydraulic pressure. During the working excavation, due to the large excavation force, the excavation force will fluctuate and change the hydraulic medium in the hydraulic cylinder, which will lead to an error in the displacement of the hydraulic cylinder, which will have a negative impact on the excavation angle

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