US 11,268,383 B2Granted

Type of energy-absorbing rock bolt device with umbrella-shaped structure

AssigneeInstitute of Geology and Geophysics, Chinese Academy of Sciences

InventorsSongfeng Guo, Shengwen Qi, Shishu Zhang, Xingdong Ma, Guoqing Yuan, Xiuhua Wang, Bowen Zheng, Yu Zou, Xiaolin Huang, Ning Liang, Hang Li, Yubo Liu, Jianxian He, Xianglong Yao, Daping Tai, Guangming Luo

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Abstract

The present invention discloses a type of energy-absorbing rock bolt device with umbrella-shaped structure, which consists of a body of bolt, and one end of the said body of bolt is equipped with a preloaded system, as well as the other end of the said body of bolt is equipped with the first support system, in addition, the said body of bolt is equipped with several second support systems, and the said second support system is located between the said preloaded system and the said first support system; meanwhile, the said second support system consists of the first umbrella-shaped support system and the second umbrella support system.

Claims13

Dependent claims

A type of energy-absorbing rock bolt device with umbrella-shaped structure, comprising a body of bolt (1), one end of the body of bolt (1) being equipped with a preloaded system (4), the other end of the body of bolt (1) being equipped with a first support system (2), the body of bolt (1) being equipped with several second support systems (3), and the several second support systems (3) being located between the preloaded system (4) and the first support system (2);

wherein each of the second support systems (3) comprises a first umbrella-shaped support system and a second umbrella-shaped support system;
wherein an end of the first umbrella-shaped support system close to the preloaded system (4) is fixedly connected to the body of bolt (1), another end of the first umbrella-shaped support system away from the preloaded system (4) is threadedly connected to the body of bolt (1), and the second umbrella-shaped support system is threadedly connected to the body of bolt (1);
wherein the first umbrella-shaped support system comprises a first fixed block (3.1), a first nut (3.3) and a first interconnecting piece;
the first fixed block (3.1) is muff-coupled with the body of bolt (1), both sides of the first fixed block (3.1) are equipped with shoulders (3.2), and the shoulders (3.2) are fixedly connected to the body of bolt (1);
the first nut (3.3) is threadedly connected to the body of bolt (1), the first interconnecting piece comprises a first connecting rod (3.4) and a second connecting rod (3.5), a sliding sleeve (3.6) is slidingly connected to the second connecting rod (3.5), and the sliding sleeve (3.6) is articulated to one end of the first connecting rod (3.4), the other end of the first connecting rod (3.4) is articulated to the first nut (3.3), and the second connecting rod (3.5) is articulated to the first fixed block (3.1).

2 more elements

wherein each of the second support systems (3) comprises a first umbrella-shaped support system and a second umbrella-shaped support system;
wherein an end of the first umbrella-shaped support system close to the preloaded system (4) is fixedly connected to the body of bolt (1), another end of the first umbrella-shaped support system away from the preloaded system (4) is threadedly connected to the body of bolt (1), and the second umbrella-shaped support system is threadedly connected to the body of bolt (1);
wherein the first support system (2) comprises a second fixed block (2.1), two expansion shell pieces (2.2) symmetrically arranged on upper and lower sides of the second fixed block (2.1), and a U-shaped shackle (2.3) fixedly connected to outer sides of the two expansion shell pieces (2.2);
the two expansion shell pieces (2.2) are integrated together via the U-shaped shackle (2.3), an outer side of the U-shaped shackle (2.3) is fastened with a strapping tape (2.4), the second fixed block (2.1) is fixedly connected to the body of bolt (1), an outer side of the second fixed block (2.1) is formed with a conical surface, and one end of the expansion shell piece (2.2) close to the second fixed block (2.1) is matched with the conical surface;
internal threads are arranged on an inner side of the expansion shell piece (2.2), external threads are arranged on an outer side of the second fixed block (2.1), and the internal threads are matched with the external threads;
and several wedge blocks (2.2.1) are fixedly connected at intervals onto the outer side of the expansion shell piece (2.2).

3 more elements

Dependencies are inferred from the claim text.