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Anti-releasing elevator for oil drilling

An elevator and anti-off technology, which is applied in the direction of drill pipes, drill pipes, drilling equipment, etc., can solve the problems that the locking screws are easy to break, the lifting ring is time-consuming, and difficult to take out.

Active Publication Date: 2013-08-07
CHENGDU ZHUOXIN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the shortcomings of the above-mentioned elevator ring anti-off device, which is time-consuming, laborious, and finger-injured, and the locking screw is easy to break and difficult to take out, the invention provides an anti-off elevator for oil drilling. The detachment clip can effectively limit the lifting ring in the ear hole of the lifting lug, and will not fall off, avoiding the occurrence of major safety accidents caused by single-ring lifting. When in use, the lifting ring is light, time-saving and labor-saving, and has high safety. There is no need to replace the locking screw, which reduces the cost of use

Method used

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  • Anti-releasing elevator for oil drilling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Such as figure 1 , Image 6 with Figure 19As shown, this embodiment includes an elevator main body 1 and a lifting lug 3, and the lifting lug 3 is provided with an ear hole 4 and a notch 30, the ear hole 4 is used to place a lifting ring, and an anti-off device is installed in the notch 30, Described anti-off device comprises block 2, rotating shaft 5, core cover 24, bead 23 and torsion spring, and core cover 24 outer surface is provided with chute 25, and block 2 inner surface is provided with draw-in groove 213, and small One part of the ball 23 is placed in the chute 25, the other part is placed in the card slot 213, the core sleeve 24 is set on the rotating shaft 5, the torsion spring is set on the rotating shaft 5 and connected to the stopper 2, and the stopper 2 rotates around The shaft 5 performs resetting, locking, and closed cycle movements in sequence. The stopper 2 includes a blocking part 21 and an operating part 20. The blocking part 21 of the stopper 2 ...

Embodiment 2

[0077] Such as figure 1 , Figure 7 with Figure 19 As shown, this embodiment is basically the same as Embodiment 1, the difference is:

[0078] The chute 25 has a depth of 1.5mm and a width of 3mm. The locking groove 213 is an arc-shaped groove parallel to the rotating shaft 5. The depth of the locking groove is 1.5mm and the width is 3mm.

[0079] The small ball 23 is a small steel ball with a diameter of 3 mm.

[0080] The torsion spring is a helical torsion spring 27 , and a locking screw 22 is arranged on the stopper 2 , and the locking screw 22 is connected to the helical torsion spring 27 .

[0081] The rotating shaft 5 is provided with a slot 50, a keyway 51 and a threaded hole, the slot 50 is used to install the helical torsion spring 27, the keyway 51 is used to place the locking key 52, and the threaded hole is used to connect Rotate the shaft nail cover 53, the lifting lug is provided with the rotation shaft hole for the rotation shaft 5 to penetrate, the nail ...

Embodiment 3

[0083] Such as figure 1 , Figure 8 with Figure 19 As shown, this embodiment is basically the same as Embodiment 1, the difference is:

[0084] The chute 25 has a depth of 2mm and a width of 4mm. The locking groove 213 is an arc-shaped groove parallel to the rotating shaft 5. The depth of the locking groove is 2mm and the width is 4mm.

[0085] The pellets are pellets made of FRP with a diameter of 4mm.

[0086] The torsion spring is a disc-type torsion spring 26 , and the inner surface of the stopper 2 is provided with a protrusion 28 , and the protrusion 28 is in contact with the disc-type torsion spring 26 .

[0087] The rotating shaft 5 is provided with a slot 50, a keyway 51 and a threaded hole, the slot 50 is used to install the disc torsion spring 26, the keyway 51 is used to place the locking key 52, and the threaded hole is used to connect Rotate the shaft nail cover 53, the lifting lug is provided with the rotation shaft hole for the rotation shaft 5 to penetrat...

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Abstract

The invention discloses an anti-releasing elevator for oil drilling. The anti-releasing elevator comprises an elevator main body and a lifting lug, wherein a lug hole and a notch are arranged on the lifting lug, the lug hole is used for placing a hanging ring, and an anti-releasing device is installed in the notch. The anti-releasing device comprises a stop dog and a rotating shaft, wherein the stop dog sequentially performs resetting, locking and closed circulating motion around the rotating shaft. Due to the fact that the stop dog is further provided with the locking action compared with the prior art, during locking of the stop dog, the lug hole of the lifting lug cannot be shielded, and users can easily and fast pick and place the hanging ring, so that the anti-releasing elevator is time-saving and energy-saving. When the stop dog is in the resetting or closing state, a blocking portion of the stop dog is arranged on the lug hole of the stop dog, so that the working position of the hanging ring is effectively limited, the hanging ring can only move in the lug hole of the lifting lug and cannot get out from the lug hole of the lifting lug, and major safety accidents caused by falling of the hanging ring can be avoided.

Description

technical field [0001] The invention belongs to the field of equipment for oil drilling, and in particular relates to an anti-slip elevator for oil drilling. Background technique [0002] In oil drilling construction operations, the elevator is an indispensable tool for lifting the drill string. It connects the lifting ring and lifts the drill string. During use, the rings can easily escape from the ear holes of the elevators, causing major safety accidents. ACCIDENT. The common anti-off device uses a bolt, which is to set a longitudinal bolt hole at the elevator lug, and then insert a bolt at the bolt, and the bolt can prevent the ring from falling off from the elevator lug. This anti-off device is simple in structure, easy to process, but there are many shortcomings in this bolt type anti-off device: [0003] a. Since the latch is not fixed in the latch hole, the latch may fall out of the latch hole. If it hits a person, it will cause a safety accident. If the latch fal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/06
Inventor 陈伦俊池振华卢伟
Owner CHENGDU ZHUOXIN IND
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