Hob head for shield hob test

By employing a sliding fit between the base guide rail and the sliding frame, along with upper constraints on the guide shaft, and combining rotation and sliding drive mechanisms in the shield tunnel cutter test equipment, the problem of sliding frame instability and tilting was solved, achieving stable rotation and precise feeding of the cutter, thus simulating real tunneling conditions.

CN224456189UActive Publication Date: 2026-07-03CHINA RAILWAY SHISIJU GROUP CORP +2
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Patent Information

Application Number
CN202521674367.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-07
Publication Date
2026-07-03
Estimated Expiration
2035-08-07

AI Technical Summary

Technical Problem

In existing technologies, the sliding frame of the shield cutterhead test equipment is prone to instability and tilting during the sliding process in an upright state, and it is difficult to simulate the stability and continuity of real tunneling conditions.

Method used

The base guide rail and the first slider of the sliding frame form a reliable sliding fit. The upper guide shaft of the mounting base provides upper constraint on the sliding frame. Combined with the rotary drive mechanism and the sliding drive mechanism, the stability and precise control of the sliding frame are ensured.

Benefits of technology

It improves the sliding stability of the sliding frame in the vertical state, avoids instability and tilting, and realizes stable rotation cutting and precise feeding of the roller cutter, simulating real tunneling conditions.

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Abstract

The utility model discloses a hob head for a shield hob test, which comprises a base provided with a guide rail; the mounting seat is fixedly mounted on the base, and at least two corners of the upper end of the mounting seat are provided with guide shafts; a first sliding block is arranged at the bottom of the sliding frame, and the corner of the upper end of the sliding frame slidably sleeves the guide shaft; the cutter head is rotationally mounted on the front side of the sliding frame; the hob seat is detachably and fixedly mounted on the front side surface of the cutterhead; the rotary driving mechanism is mounted on the sliding frame and is in transmission connection with the cutter head; the sliding driving mechanism is used for driving the sliding frame to slide. The guide rail and the first sliding block are in reliable sliding fit, and stable bottom supporting and guiding are provided for the sliding frame; and the guide shafts at at least two corners of the upper end of the mounting seat penetrate through the corners of the sliding frame to form upper restraint on the sliding frame. The double matching structure of the bottom sliding support and the upper guide limit greatly improves the sliding stability of the sliding frame in a vertical state, and effectively prevents the sliding frame from being unstable and inclined.
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