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

Patent metadata

Field	Value
Publication number	US-11268383-B2
Application number	US-202117167363-A
Country	US
Kind code	B2
Filing date	Feb 4, 2021
Priority date	Jul 9, 2020
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

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.

First claim

The invention claimed is:

1. 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. The energy-absorbing rock bolt device with umbrella-shaped structure according to claim 1 , wherein the second umbrella-shaped support system comprises a second nut ( 3 . 7 ), a third nut ( 3 . 8 ) and a second interconnecting piece; the second nut ( 3 . 7 ) and the third nut ( 3 . 8 ) are individually threadedly connected to the body of bolt ( 1 ), and the second interconnecting piece comprises a third connecting rod ( 3 . 9 ), a fourth connecting rod ( 3 . 10 ), a fifth connecting rod ( 3 . 11 ) and a sixth connecting rod ( 3 . 12 ); one end of the third connecting rod ( 3 . 9 ) and one end of the sixth connecting rod ( 3 . 12 ) are respectively articulated to the second nut ( 3 . 7 ) and the third nut ( 3 . 8 ); the third connecting rod ( 3 . 9 ), the fourth connecting rod ( 3 . 10 ), the fifth connecting rod ( 3 . 11 ) and the sixth connecting rod ( 3 . 12 ) are respectively connected end to end in sequence.

3. The energy-absorbing rock bolt device with umbrella-shaped structure according to claim 2 , wherein internal threads arranged on the first nut ( 3 . 3 ) and the third nut ( 3 . 8 ) are in a same direction, and internal threads arranged on the second nut ( 3 . 3 ) and the third nut ( 3 . 8 ) are in opposite directions.

4. The energy-absorbing rock bolt device with umbrella-shaped structure according to claim 2 , wherein Y-shaped support frames ( 3 . 13 ) are symmetrically arranged at an articulation point of the third connecting rod ( 3 . 9 ) and the fourth connecting rod ( 3 . 10 ) and an articulation point of the fifth connecting rod ( 3 . 11 ) and the sixth connecting rod ( 3 . 12 ), a conical block ( 3 . 14 ) is arranged at an articulation point of the fourth connecting rod ( 3 . 10 ) and the fifth connecting rod ( 3 . 11 ), the Y-shaped support frames ( 3 . 13 ) and the conical block ( 3 . 14 ) are all arranged radially based upon taking a shaft axis of the body of bolt ( 1 ) as a center.

5. The energy-absorbing rock bolt device with umbrella-shaped structure according to claim 2 , wherein the first interconnecting piece and the second interconnecting piece are all arranged in a circular array based upon taking a shaft axis of the body of bolt ( 1 ) as a center.

6. The energy-absorbing rock bolt device with umbrella-shaped structure according to claim 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 ).

7. The energy-absorbing rock bolt device with umbrella-shaped structure according to claim 6 , wherein a through hole ( 2 . 3 . 1 ) is formed on a left side of the U-shaped shackle ( 2 . 3 ), springs ( 2 . 3 . 2 ) are symmetrically arranged on upper and lower sides of the through hole ( 2 . 3 . 1 ), and steel balls ( 2 . 3 . 3 ) are symmetrically arranged on the upper and lower sides of the through hole ( 2 . 3 . 1 ); one end of the spring ( 2 . 3 . 2 ) is fixedly connected to a side surface of the through hole ( 2 . 3 . 1 ), and the other end of the spring ( 2 . 3 . 2 ) is fixedly connected to the steel ball ( 2 . 3 . 3 ); the body of bolt ( 1 ) passes through the through hole ( 2 . 3 . 1 ), a circular groove ( 1 . 1 ) is formed on an end of the body of bolt ( 1 ) close to the U-shaped shackle ( 2 . 3 ), and the circular groove ( 1 . 1 ) is matched with the steel balls ( 2 . 3 . 3 ).

8. The energy-absorbing rock bolt device with umbrella-shaped structure according to claim 1 , wherein the preloaded system ( 4 ) comprises a supporting plate ( 4 . 1 ) and a fourth nut ( 4 . 2 ); the supporting plate ( 4 . 1 ) is fixedly connected to the body of bolt ( 1 ), and the fourth nut ( 4 . 2 ) is threadedly connected to the body of bolt ( 1 ).

9. The energy-absorbing rock bolt device with umbrella-shaped structure according to claim 8 , wherein an end of the body of bolt ( 1 ) away from the supporting plate ( 4 . 1 ) is fixedly connected with a resin stirrer.

10. 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 syst

Assignees

• Inst Geology & Geophysics Cas

Inventors

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

Classifications

• E21D21/0046 Primary

  formed by a plurality of elements arranged longitudinally · CPC title

• E21D21/008

  Anchoring or tensioning means · CPC title

• E21D21/0026 Primary

  characterised by constructional features of the bolts · CPC title