Drill pipe thread thread protector
A thread thread and protector technology, which is applied in the direction of drill pipes, drill pipes, earthwork drilling, etc., can solve the problems of high labor intensity for workers to unscrew, short service life of thread threads, and wear of thread threads, so as to improve the use of The effect of life, reducing frictional resistance, and reducing labor intensity
Inactive Publication Date: 2017-06-23
JILIN UNIV
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AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to solve the problems of serious wear and tear on the screw thread when unscrewing and unloading the drill pipe, short service life of the threaded screw, high cost of consumables, high labor intensity for workers to unscrew, and low work efficiency. Provided is a drill pipe thread thread protector
Method used
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[0016] see figure 1 As shown, the present invention is composed of a lifting device 1 and a stretching and returning device 2, and the stretching and returning device 2 is arranged in the lifting device 1;
[0017] The lifting device 1 includes a lifting ring 11, a first split pin 12, a fixing nut 13, a washer 14, a dust cover 15, a bearing 16, a bearing 17 and a lifting body 18. The lifting ring 11 is fixedly arranged on the lifting bearing. 17, the first split pin 12, the fixing nut 13, the nut washer 14, the dust cover 15, the bearing 16 and the bearing 17 are sequentially fixed on the lifting body 18, and the lifting body 18 has a first external thread 181 and Hollow hole 182;
[0018] The stretch return device 2 includes an upper bearing joint 21, a lower lifting bearing 22, a nitrogen gas spring 23, a bearing sleeve 24, a saddle joint 25, a cross bolt 26, a second split pin 27, a lower bearing joint 28, a stopper pin 29 and a hoop 210. The upper joint 21 has a first in...
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The invention discloses a drill pipe screw thread protector. The drill pipe screw thread protector is composed of a lifting and guiding device and a stretching and returning device, the stretching and returning device is arranged in the lifting and guiding device, when the drill pipe screw thread protector is connected with a drilling tool ready and a lifter lifts the drilling tool, a lower lifting body drives an upper carrying joint to move downward and compress a nitrogen spring, then the nitrogen spring is compressed to the maximum state, when a holder clamps the drilling tool tightly, the lifter is operated to loosen a steel wire rope, then a lifter winding drum is braked, due to the fact that lifting and lowering the steel wire rope is subjected to pulling force action of the nitrogen spring, the loosened steel wire rope is stretched tightly once again, a drill pipe on a machine is adjusted from the inclined state to the vertical state, and most weight of the drill pipe on the machine is counteracted. By means of the drill pipe screw thread protector, abrasion of a drill pipe screw thread is effectively alleviated, the working condition in the drill pipe thread screwing-off process is improved, the frictional resistance for screwing off the drill pipe is substantially reduced, it is helpful to prolong the service life of the drill pipe screw thread, and labor intensity for screwing off the drill pipe is lowered.
Description
technical field [0001] The invention relates to a tool for lifting and lowering drilling tools of drilling equipment, in particular to a protector for screw threads of drill rods. Background technique [0002] When using the drilling rig for drilling operations, the drill pipe is often unscrewed due to the addition of the drill pipe, the lifting of the drill to replace the drill bit, or the extraction of the core. The screw thread exerts a lot of pressure, and the screw thread is worn and damaged, which also makes the manual unscrewing work very heavy, increases the labor intensity of workers, and has low work efficiency. The oil is deducted, and the drill pipe handle in use is made of high-quality steel, which improves the service life of the screw thread. Despite this, the wear of the drill pipe thread is still a common form of drilling tool failure, and it also affects the current drilling tools. One of the main factors of pipe consumption. [0003] When unscrewing the ...
Claims
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IPC IPC(8): E21B19/02
CPCE21B19/02
Inventor 杨红东孙雪娇
Owner JILIN UNIV