Safety pin capable of preventing elevator from falling off

Abstract

The invention discloses a safety pin capable of preventing an elevator from falling off. The safety pin is characterized in that a hinge base is welded onto the lower part of a handle of an elevator pin rod; a pin hole is formed in the hinge base; a pin hole is also formed in the front end of a handle of a lock hook; a pin bolt penetrates through the two pin holes to connect the two holes together; an upper support base and a lower support base are positioned between and welded onto the handle of the elevator pin rod and the handle of the lock hook respectively; a reset spring is added between the lower support base and the upper support base 7; a safety rope ring is welded at the front end of the handle of the elevator pin rod. When the tubular column is to be removed, the handles are held by hands, the handle of the lock hook is nipped, the reset spring is compressed, the lock hook is opened, the elevator pin rod is inserted in an eyehole of an elevator lug, the handle of the lock hook is released, and the lock hook and the elevator pin rod are closed under the function of the reset spring; when the elevator turns over in an accident, the elevator pin rod can be prevented from falling off the eyehole of the elevator lug due to the function of the lock hook, and the elevator can be prevented from falling off the elevator ring and injuring people and equipment.

Description

technical field [0001] The present invention relates to inserting into the holes on the elevator lugs when lifting and lowering pipe strings during oil drilling and workover, so as to prevent the elevators from falling off from the lifting rings and other secondary accidents caused. Background technique [0002] During oil drilling and workover tripping, the hollow travel car will hit the ropes and some objects in the derrick space due to swings and other reasons during the up and down process of the derrick space, or the elevator hanging in the suspension ring when it brakes suddenly. It may be overturned. At this time, the straight rod elevator pin commonly used on site will fall out of the hole of the elevator lug, and the lifting lugs on both sides of the elevator will be disengaged from the side of the lifting ring, causing the elevator to fall from the air and hit the drill floor. , Injury to personnel or equipment, etc., there is a great potential safety hazard. Con...

AI Technical Summary

Problems solved by technology

[0002] During oil drilling and workover tripping, the hollow travel car will hit the ropes and some objects in the derrick space due to swings and other reasons during the up and down process of the derrick space, or the elevator hanging in the suspension ring when it brakes suddenly. It may be overturned. At this time, the straight rod elevator pin commonly used on site will fall out of the hole of the elevator lug, and the lifting lugs on both sides of the elevator will be disengaged from the side of the lifting ring, causing the elevator to fall from the air and hit the drill floor. , injury to personnel or equipment, etc., there is a great potential safety hazard

Images