head sheave

Post Date:
Dec 22,2014
Expiry Date:
Jun 20,2015
Detailed Description:
Quantity: 1
Price:1 USD Metric Tons
Payment Method: T/T L/C
Head sheave is also called the head sheave pulley (sheave wheel) is arranged on the top of derrick or winze, supporting the lifting guide wheel steel wire rope. The mine shaft derrick top fixed pulley wire rope is adjusted the direction of movement, he is carrying cage, bucket or shaft skip weight, mark is also often viewed as mine. According to the "coal mine safety regulations", upgrading equipment, the minimum diameter of the sheave and the wire rope diameter ratio should be consistent with the: well lifting device for drum and embraces the angle greater than 90 DEG. The sheave, shall not be less than 80; embraces the angle of less than 90 DEG head sheave, shall not be less than 60; underground embraces the angle greater than 90 DEG. The sheave, shall not less than 60; surround angle less than 90 degrees day shall not be less than 40

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