CN201593385U - Rotary handle type elevator locking pin - Google Patents

Abstract

A rotary handle type elevator locking pin is formed by an elevator pin 2, a locking hook 3, a siding sleeve 4, a spring 5, a guide shaft 6, a spring block 7, a rotating handle 8, an L-shaped chute body 9 and a limit nut 10, wherein the elevator pin 2 is connected with the guide shaft 6, the locking hook 3 is integrally welded on the sliding sleeve 4, the L-shaped chute body 9 is mounted inside the rotary handle 8 while the L-shaped chute body 9 and the rotary handle 8 form an integration, the spring block 7, the spring 5 and the sliding sleeve 4 are sequentially penetrated by the guide shaft 6, and the limit nut 10 is mounted on threads at one end of the guide shaft 6. The rotary handle type elevator locking pin includes a locking process and a release process in use, by rotating the rotary handle 8 via 90degrees anticlockwise, the locking hook 3 moves rightward to firmly wrap a lugged edge of an elevator 1 under tension effect of the spring 5, and then the locking process is finished. By rotating the rotary handle 8 via 90degrees clockwise, the locking hook 3 moves rightward to be completely released from the lugged edge of the elevator 1 under tension effect of the spring 5, and then the release process is finished. The rotary handle type elevator locking pin has novel creativeness, scientifically reasonable structure, lighter weight, and simple and flexible operation, effectively improves labor conditions of workover treatment, increases working efficiency, is beneficial to safety production, and has fine social and economical benefits.

Description

Rotary handle formula elevator locking pin

1, technical field: the present invention relates to natural petroleum gas field production aspect, this rotary handle formula elevator locking pin is applicable to that the field drilling exploitation removes drill string, oil pipe and sleeve pipe construction operation, uses on the used elevator of handling tubing string.Belong to oil field development and play worker's apparatus facility technology field in the lower tubular column operation.

2; technical background: elevator is one of visual plant in the underground work construction; mainly by tractor hoist; derrick; overhead traveling crane; travelling block, wire rope, suspension ring; elevator and elevator pin are formed; wherein, the elevator pin is to use one of the highest instrument of frequency, because of being subjected to the influence of many-sided factors such as down-hole sand-preventing process in the job execution; it is frequent to separate clipping technique; in playing the lower tubular column operating process, the time regular meeting load abrupt release phenomenon appears, at this moment; travelling block; suspension ring and elevator interact, and cause the elevator pin to eject because of being subjected to greater impact power, suspension ring disengaging elevator occurs and cause danger; easily generation and following; ground installation and human casualty accident exist great potential safety hazard.

3, Fa Ming content: this rotary handle formula elevator locking pin, changed old-fashioned traditional pin in the past, be different from the multiple anticreep pin of present use.The utility model structure, principle are mainly reflected in the science practicality, safe and reliable, original and different, flexible operation, its particular structure characteristics, good anti-drop function is arranged, guarantee that the slippage accident does not take place suspension ring, guarantee down-hole, ground installation and operator's safety, reduce production costs, stablize the workforce, considerable social benefit and economic benefit are arranged.

The utility model is made up of elevator pin, the axis of guide, spring, spring base, sliding sleeve, locking bail, rotary handle, L type chute body, alignment pin and limit screw cap.The elevator pin links to each other with the axis of guide that has alignment pin, and spring base, spring, sliding sleeve and rotary handle are inserted on the axis of guide in proper order, and the L type chute body that has L type chute is installed in the interior end of rotary handle, and limit screw cap is contained in the tail end of the axis of guide.Locking bail is welded on the sliding sleeve in addition, is integrated with sliding sleeve.

4, description of drawings: rotary handle formula elevator locking pin structure is seen Figure of description:

Fig. 1 is the assembling drawing of rotary handle formula elevator locking pin, and Fig. 2 is the structure chart of L type chute body, and Fig. 3 is the structure chart of locking bail

5,The specific embodiment: by Fig. 1 and Fig. 2 Fig. 3 as can be known, the utility model consists of the following components: elevator pin 2, locking bail 3, sliding sleeve 4, spring 5, the axis of guide 6, spring base 7, rotary handle 8, L type chute body 9, limit screw cap 10.

Rotary handle formula elevator locking pin design feature: elevator pin 2 is threaded an end and is connected with an end screw of the axis of guide 6 that has alignment pin 12, the spring base 7 that has square hole is installed on the axis of guide 6, spring 5 is contained in the spring base 7, locking bail 3 is welded on the sliding sleeve 4 and forms one, the sliding sleeve 4 that has square hole is through on the axis of guide 6, be enclosed within spring base 7 outsides, L type chute body 9 one ends have screw thread, the design of the body other end has the L type chute 11a and the 11b of half-twist, L type chute body 9 is installed in the inside of rotary handle 8, both form one, then it are through on the axis of guide 6, are enclosed within sliding sleeve 4 outsides, in addition, the annular knurl processing is carried out on the surface of rotary handle 8, plays anti-skidding effect when operation, and limit screw cap 10 is contained on the screw thread of the axis of guide 6 one ends.

Operating principle: the utility model is divided into locking in use and breaks away from two processes.

Locking process: rotary handle formula elevator locking pin is inserted in the pin-and-hole of elevator 1, at this moment alignment pin 12 is in the long chute 10a of L type, rotary handle 8 is moved to left, spring 5 stressed being compressed, be moved to the left with sliding sleeve 4 together with locking bail 3, when alignment pin 12 moves on to the low order end of the long chute 11a of L type, counterclockwise with rotary handle 8 half-twists, this moment is under the tension force effect of spring 5, interlock sliding sleeve 5, locking bail 3 and rotary handle 8 move to right-hand member, alignment pin 12 is moved in the L type short groove 11b, and this moment, locking bail 3 firmly wrapped the ear edge of elevator 1, guaranteed can not to be ejected when elevator pin 2 is subjected to instantaneous impact in operation process.

Detach procedure: when needs take out rotary handle formula elevator locking pin, rotary handle 8 is moved to left, make alignment pin 12 move on to the low order end of L type short groove 11b, will rotate rotary handle 8 half-twists then clockwise, this moment, alignment pin 12 moved on to the low order end of the long chute 11a of L type; Under the tension force effect of spring 5, promoting sliding sleeve 5, locking bail 3 and rotary handle 8 moves to right-hand member together, under the effect of elastic force, alignment pin 12 is moved to the left end of the long chute 11a of L type, this moment, the right-hand member of rotary handle 8 was subjected to stopping of limit screw cap 10, in case deviate from, at this moment locking bail 3 breaks away from the ear edge of elevator 1 fully, smoothly rotary handle formula elevator locking pin is extracted from the pinhole of elevator 1 from bottom to top.

Effect of the present invention

(1) this invention can thoroughly be stopped in playing the lower tubular column operation process, because of the phenomenon that is subjected to greater impact power to cause elevator pin to eject, thoroughly avoids causing the great potential safety hazards such as down-hole, ground installation and personal injury because elevator pin ejects.

(2) this invention intention novelty is scientific and reasonable for structure, has remedied the defective of other locking pin.Locking pin in the past because of load release is bigger, pin still occurs and deviates from phenomenon when unfreezing.The present invention is splendid through on-the-spot test of many times effect, has thoroughly solved the difficult problem that elevator pin accident is deviate from.

(3) operating personnel can a hand operation, and weight is lighter, simple to operation flexibly, safe and reliable, sturdy and durable, characteristics such as not yielding can be widely used on the implements such as drilling well, underground work.

(4) this invention has improved the workover treatment condition of labor, has improved operating efficiency, helps safety in production, and good social and economic benefit are arranged.

Claims (1)

1. a rotary handle formula elevator locking pin is by elevator pin (2), locking bail (3), sliding sleeve (4), spring (5), the axis of guide (6), spring base (7), rotary handle (8), L type chute body (9), limit screw cap (10) is formed, it is characterized in that: elevator pin (2) one ends are threaded, the axis of guide (6) one ends have to design on the screw body alignment pin (12), one end of one end of elevator pin (2) and the axis of guide (6) carries out screwed connection, the spring base (7) that has square hole is installed on the axis of guide (6), spring (5) is contained in the spring base (7), locking bail (3) is welded on sliding sleeve (4) and goes up the formation one, the sliding sleeve (4) that has square hole is through on the axis of guide (6), be enclosed within spring base (7) outside, L type chute body (9) one ends have screw thread, the other end design of body has the long chute (11a) and the short groove (11b) of half-twist, L type chute body (9) is installed in the inside of rotary handle (8), both form one, then it is through on the axis of guide (6), be enclosed within sliding sleeve (4) outside, in addition, the surface of rotary handle (8) is carried out annular knurl and is handled, play anti-skidding effect when operation, limit screw cap (10) is contained on the screw thread of the axis of guide (6) one ends.

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