Fall prevention brake buffering system for high-speed mine lift

Patent metadata

Field	Value
Publication number	US-9840396-B2
Application number	US-201314383836-A
Country	US
Kind code	B2
Filing date	Mar 25, 2013
Priority date	Mar 27, 2012
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

Disclosed is a fall prevention brake buffering system for high-speed mine lift, including brake ropes ( 2 ) fixed on two sides of a car ( 5 ). One end of the brake rope ( 2 ) is fixed on the top part of a vertical well ( 6 ), and the other end is fixed on the bottom part of the vertical well ( 6 ). A linkage mechanism ( 11 ) is arranged at the bottom of the car ( 5 ). A buffer ( 1 ) is arranged at the top of the brake rope ( 2 ), and a tension connector ( 4 ) is arranged at the bottom of the brake rope ( 2 ). A brake rope safety tong ( 3 ) fixed on the brake rope ( 2 ) and connected with the linkage mechanism ( 11 ) is arranged at the bottom of the car ( 5 ). The buffer ( 1 ) includes an inverted brake rope gradual safety tong ( 8 ) with a buffering rope ( 9 ) provided therein and connected with the brake rope ( 2 ). A buffering rope clip ( 10 ) is arranged on the buffering rope ( 9 ). The system is convenient to install, and the buffering force of the brake rope is constant and adjustable. The system realizes reliable fall prevention brake function, greatly improves safety performance during high-speed operation of a lift with non-rigid rails, and increases safety performance during high-speed operation of a mine lift.

First claim

The invention claimed is:

1. A fall prevention brake buffering system for a high-speed mining elevator, comprising:
two braking ropes fixed to two sides of an elevator car, with one end of each of the two braking ropes fixed to an upper part of a mine shaft, respectively and an opposed end of each of the braking ropes fixed to a lower part of the mine shaft, respectively;
a linkage mechanism arranged on a bottom of the elevator car;
a buffer fixed on the upper part of the mine shaft and connected with the end of the braking rope fixed to the upper part of the mine shaft;
a tension connector fixed on the lower part of the mine shaft and connected with the end of the braking rope fixed to the lower part of the mine shaft;
a first braking rope safety gear fixed to the braking rope and connected with the linkage mechanism arranged on the bottom of the elevator car,
wherein the buffer comprises an inverted second braking rope safety gear, a buffering rope is connected to the braking rope which is arranged in the second braking rope safety gear, and a buffering rope clip is arranged on the buffering rope,
wherein, each of the first and second braking rope safety gears comprises a gear body, a rope groove profile wedge block arranged in the gear body, a rope groove of the rope groove profile wedge block comprising beryllium copper, and an upper part of the rope groove of the rope groove profile wedge block being conical, and a lifting screw rod arranged on the top of the rope groove profile wedge block;
the rope groove profile wedge block of the braking rope safety gear having a conical rope groove;
the tension connector comprises a wedge-shaped rope clip fastened and fixed on the braking rope by:
a steel part which is angled,
a wedge block is arranged in the wedge-shaped rope clip,
a fixed beam, fixed by a frangible connecting bolt to the steel part, is arranged below the steel part, and
a terminal end of the braking rope having a rope clip arranged on the fixed beam; and

a braking rope tensioner comprising
adjusting bolts arranged in symmetry on two sides of the braking rope,
a pressing plate fitted over the adjusting bolts, and
at least two adjusting nuts arranged on a pressing plate operable to press the wedge-shaped rope clip downwards to increase tension of the braking rope;

wherein the connecting bolt has rated breaking strength and the connecting bolt will be broken apart when an elastic wave in the braking rope is transferred to the terminal end of the braking rope.

2. The fall prevention brake buffering system for a high-speed mining elevator of claim 1 further comprising a U-shaped spring arranged on two sides of the rope groove profile wedge block biased against a reaction force of the braking rope against the rope groove profile wedge block transferred from the rope groove profile wedge block.

Assignees

• Univ China Mining
• Dongnan Elevator Co Ltd
• Dongnan Elevator Co Ltd

Inventors

• Zhu Zhencai
• Cao Guohua
• Qin Jiancong
• Kang Hongqiao
• Chen Guoan
• Peng Weihong
• Li Wei
• Zhou Gongbo
• Wu Renyuan
• Yue Ling
• Ma Yiping
• Yang Jianrong

Classifications

• B66B7/085

  Belt termination devices · CPC title

• B66B7/10

  for equalising rope or cable tension · CPC title

• B66B5/24 Primary

  by acting on guide ropes or cables · CPC title