A steel arch beam assembly device for hard rock boring machine

Abstract

The invention relates to a steel arched girder splicing device for a hard rock tunnel boring machine. The steel arched girder splicing device consists of a rotating ring, a rotating ring supporter, rotating ring driving mechanisms, a jacking trolley and a support opening mechanism, wherein a plurality of ring girder supporters are arranged on the side surface of the rotating ring in a scattering way; the rotating ring supporter realizes the supporting on the rotating ring through support wheels; the rotating ring supporter comprises an upper part supporter, a lower part supporter and two horizontal supporters; the upper part supporter, the lower part supporter and the two horizontal supporters are fixedly arranged on a plane around a girder; the upper part supporter is also provided with a driving track; the jacking trolley is arranged on the driving track; a hydraulic support rod is arranged on the jacking trolley; each of the two horizontal supporters is provided with one rotating ring driving mechanism; each rotating ring driving mechanism comprises a friction wheel and a hydraulic motor; and each friction wheel tightly presses the inner wall of the rotating ring by a compression device. The steel arched girder splicing device has the advantages that the ring girder pavement can be carried out under the condition that the work of a tunnel boring machine does not stop, and the friction wheels are adopted for transmitting and driving the rotating ring. Compared with a conventional gear transmission mode, the transmission mode of the steel arched girder splicing device has the advantages that higher assembly requirements are not needed; the replacement is convenient; and the maintenance cost is low.

Description

technical field [0001] The invention relates to the technical field of hard rock roadheader engineering machinery, in particular to a steel arch beam assembly device for hard rock roadheader. Background technique [0002] During the construction process of the tunnel boring machine, when encountering places with harsh geological conditions, such as unstable geology, broken rocks, and areas prone to landslides, the tunnel wall must be temporarily supported. The assembly of the ring-shaped I-beam is very important in the support. important step. Each TBM is equipped with a steel arch beam assembly machine, which can lift, rotate, position, jack up, and axially shift the segmented ring beams. The ring beams are assembled section by section, and finally supported by the opening device. tight on the cave wall. The currently used steel arch beam assembly machines for TBM are mostly driven by gear transmission to drive the swivel, and assembled into a full-circle ring beam. The a...

AI Technical Summary

Problems solved by technology

But its disadvantages are: the bottom of the tunnel wall is occupied by the ring beam and cannot walk the rubber-tyred vehicle, and the working environment required by the gear transmission is generally relatively clean and requires high assembly precision. During the tunnel construction process, the wet working environment and scattered rocks The impact of slag on the gear, and the vibration generated during the excavation process, the gear is prone to pitting and wear, and there may also be broken teeth, and the cost of replacing the ring gear is relatively high

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