COOLING-HEATING ALTERNATING RAISE-BORING ROCK-BREAKING APPARATUS AND CONSTRUCTION METHOD

WIPO Patent Application WO/2024/083130

A1

Disclosed in the present invention are a cooling-heating alternating raise-boring rock-breaking apparatus and a construction method. The apparatus comprises a pull rod and a cutter head. The cutter head comprises a basic drill bit body and an expanding drill bit body. The basic drill bit body is arranged on the pull rod, and the expanding drill bit body is arranged on the outer ring of the basic drill bit body. A plurality of trough-shaped hob bases are arranged on both the outer ring of the expanding drill bit body and the outer ring of the basic drill bit body. A set of insert hobs are mounted in each hob base. A first hole and a second hole are formed between adjacent hob bases, high-temperature flame nozzles are arranged in the first hole, low-temperature water nozzles are arranged in the second hole, and slag outlets are formed in the inner rings of the first hole and the second hole.

JP2713266	DRILLING TOOL
WO/1993/020288	CUT EXPANSION JOINT SEALING DEVICE FOR CONCRETE DAMS AND METHOD FOR FITTING SAME
WO/2018/055549	SHAFT ENLARGEMENT ARRANGEMENT FOR A BORING SYSTEM

WANG JUN (CN)
HAN JIANYONG (CN)
WU ZHAOLONG (CN)
ZUO CONGBING (CN)
LIU YONGKUI (CN)
SHEN YONGAN (CN)
WANG BO (CN)
LIU XIUZHI (CN)
SHAO GUANGBIAO (CN)
WU SHENGZHI (CN)

PCT/CN2023/125027

April 25, 2024

October 17, 2023

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SHANDONG JIANZHU UNIV (CN)
CHINA RAILWAY 14TH BUREAU GROUP 2ND ENG CO LTD (CN)

E21B7/28; E21B10/26; E21B10/60; E21B17/042; E21B17/043; E21B36/00; E21B36/02

JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)

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