Front-mounted hob holder device

Abstract

The invention discloses a front-mounted hob holder device. The front-mounted hob holder device comprises a supporting device used for supporting the two ends of a hob shaft and a locking device used for locking the end of the hob shaft, wherein the supporting device comprises a hob holder bottom plate and two front-mounted hob holder plates which are fixedly connected to the two sides of the hob holder bottom plate respectively and are oppositely arranged; the front-mounted hob holder plates are provided with positioning grooves used for positioning the end of the hob shaft; and the locking device is arranged on the front-mounted hob holder plates. By the adoption of the front-mounted hob holder device, a hob can be conveniently mounted and operated, the front-mounted hob holder device hasgood stress characteristics, the tunneling efficiency of the hob and a hob disc can be improved, and the service life of the hob disc can be prolonged.

Description

technical field [0001] The invention relates to the technical field of tunnel excavation construction equipment, and more specifically, relates to a front-mounted hob cutter seat device. Background technique [0002] Tunnel boring machines are widely used in major engineering fields such as subways, municipalities, railways, and highways. They are important equipment that reflects the country's high-end equipment manufacturing level. As the main rock-breaking cutter of the roadheader, the hob is subject to complex stress conditions and harsh working conditions. Therefore, the installation stability of the hob has a great influence on the service life of the hob and the cutter head. [0003] In the prior art, the commonly used hob installation method is a rear-mounted hob installation method, that is, the hob is positioned on the corresponding knife seat from the rear side of the cutter head, and then the hob is fixedly installed by a fixing device. [0004] However, as the...

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Problems solved by technology

[0004] However, as the application range of roadheaders becomes wider and wider, the limitations of rear-mounted hobs are gradually highlighted

Rear-mounted hobs require sufficient installation space at the rear of the cutter head, but under certain conditions, sufficient installation space is often not provided, resulting in the failure of the hob to be installed

In addition, the weld seam of the cutter seat of the rear-mounted hob needs to bear a huge impact load, which may easily cause the weld seam of the cutter seat to crack, thereby affecting the driving efficiency and service life of the hob and cutter head

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