CN102758589A

CN102758589A - Derrick with floating frame

Info

Publication number: CN102758589A
Application number: CN201210241036XA
Authority: CN
Inventors: 刘维国; 侯敏; 孙守仁; 卫虹; 杨鹏; 王玲; 张凯
Original assignee: Baoji Oilfield Machinery Co Ltd
Current assignee: Baoji Oilfield Machinery Co Ltd
Priority date: 2012-07-12
Filing date: 2012-07-12
Publication date: 2012-10-31

Abstract

The invention discloses a derrick with a floating frame, and the derrick comprises a floating frame arranged in a derrick body, wherein the inner wall of the derrick body is provided with a guide rail; the floating frame is provided with four slide blocks, and the slide blocks are matched with the guide rail; the upper and lower ends of the floating frame are respectively provided with an upper pulley and a lower pulley; the lower end of the derrick body is connected with the lower end of an oil cylinder; the upper end of the oil cylinder is connected with the floating frame; the inner wall of the derrick body is provided with a rope fixing seat, the upper end of the rope fixing seat is connected with one end of a top drive hoisting rope, and the other end of the top drive hoisting rope, after bypassing the upper pulley, is connected with a top drive; and the lower end of the rope fixing seat is connected with one end of a pressurizing steel wire rope, and the other end of the pressurizing steel wire rope, after bypassing the lower pulley, is connected with the top drive. According to the invention, the derrick body is designed into an overall framework, so that a gap exists at the sleeved joint part of the upper section (after extending to an operating position) of the derrick and the lower section of the derrick is eliminated, the displacement of the top of the derrick is reduced, the bent deformation of the oil cylinder is reduced, and the service life of the oil cylinder is significantly prolonged.

Description

The move about derrick of frame of a kind of band

Technical field

The invention belongs to the petroleum machinery equipment technical field, relate to the move about derrick of frame of a kind of band.

Background technology

For conventional oil cylinder telescope pole, derrick epimere upper and lower moving in the derrick hypomere drives to push up to drive and carries out drillng operation when making a trip.After the derrick epimere extend out to the operating position, have certain interval with derrick hypomere suit place, under the effect that hook carries, this gap can cause crown to produce big displacement, thereby increases the bending deformation quantity of oil cylinder.Frequent trips in the drilling operation course, the oil cylinder stretching frequency is very high, and this kind process has just shortened the application life of oil cylinder, has increased oil cylinder and has changed the oil sealing number of times.

Summary of the invention

The purpose of this invention is to provide the move about derrick of frame of a kind of band, solved telescope pole unreasonable structure in the prior art, cause crown to produce big displacement, increase the bending deformation quantity of oil cylinder, the problem that has shortened oil cylinder application life.

The technical scheme that the present invention adopted is, the move about derrick of frame of a kind of band comprises the derrick body, and the frame that moves about is set in the derrick body, and derrick body inwall is provided with guide rail; The frame that moves about is provided with four slide blocks, and these four slide blocks cooperate installation separately with guide rail;

The upper and lower end of frame of moving about is respectively arranged with head sheave and head sheave down; Derrick body lower end is connected with the oil cylinder lower end; The oil cylinder upper end is connected with the frame that moves about;

Derrick body inwall also is provided with the rope holder, and rope holder upper end is connected with the end that hoisting rope is driven on the top, pushes up the other end that drives hoisting rope and walks around behind the head sheave to drive with the top and link to each other; Rope holder lower end is connected with an end of pressurization wire rope, and the wire rope other end that pressurizes is walked around down behind the head sheave to drive with the top and linked to each other.

The invention has the beneficial effects as follows,, avoided derrick epimere moving in hypomere through setting up the frame that moves about in derrick inside; Eliminate the derrick epimere and extend out to the gap that exists with derrick hypomere suit place behind the operating position, the derrick body structure of integral frame-type has increased bending rigidity; Reduce the crown displacement, reduce oil cylinder flexural deformation, reduce the number of times that oil cylinder is changed oil sealing; Reach and prolong oil cylinder application life, reduced cost of production, improved operating efficiency.

Description of drawings

Fig. 1 is that the frame that moves about in the derrick of the present invention is in derrick body bottom state structural representation;

Fig. 2 is the A-A line of vision schematic cross-section among Fig. 1;

Fig. 3 is that the frame that moves about in the derrick of the present invention is in derrick body top state structural representation;

Fig. 4 is the move about structural representation of frame of the present invention;

Fig. 5 is that B among Fig. 4 is to view.

Among the figure, 1. derrick body; 2. slide block; 3. guide rail; 4. frame moves about; 5. bearing pin; 6. hoisting rope is driven on the top; 7. rope holder; 8. pressurization wire rope; 9. oil cylinder; 10. drive on the top; 11. bearing pin two; 12. last head sheave; 13. following head sheave;

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the present invention is elaborated.

With reference to Fig. 1, Fig. 2, the structure of apparatus of the present invention is, comprises the derrick body 1 of general frame structure, and the frame 4 that moves about is set in derrick body 1, is provided with guide rail 3 at derrick body 1 inwall, is used for the frame 4 that moves about is led; The frame 4 that moves about is provided with four slide blocks 2 (four jiaos each one of the upper and lower end of side), and the frame 4 that moves about cooperates installation through these four slide blocks 2 with guide rail 3, and the frame 4 that moves about during work is with each slide block 2 upper and lower moving in guide rail 3; The upper and lower end of frame 4 of moving about is respectively arranged with head sheave 12 and head sheave 13 down; Derrick body 1 lower end is connected with oil cylinder 9 lower ends through bearing pin 2 11; Oil cylinder 9 upper ends are connected with the frame 4 that moves about through bearing pin 5;

Derrick body 1 inwall also is provided with rope holder 7, and rope holder 7 upper ends are connected with the end that hoisting rope 6 is driven on the top, pushes up the other end that drives hoisting rope 6 and walks around and drive 10 with the top behind the last head sheave 12 of the frame 4 that moves about and link to each other; Rope holder 7 lower ends are connected with an end of pressurization wire rope 8, and the following head sheave 13 that wire rope 8 other ends that pressurize are walked around the frame 4 that moves about then drives 10 with the top and links to each other.

With reference to Fig. 3, an end of pressurization wire rope 8 is connected with the rope holder 7 on being welded in derrick body 1, and pressurization wire rope 8 other ends drive 10 through following head sheave 13 backs of the frame 4 that moves about with the top and link to each other; When the frame 4 that moves about moved down, the top was driven 10 drive drilling rods and is also moved down also and can apply certain pressure to drilling rod.

With reference to Fig. 4, Fig. 5, the frame 4 side upper and lower sides that move about are respectively arranged with a slide block 2 for two jiaos, and oil cylinder 9 lower ends link to each other with big ear plate on the derrick body 1 through bearing pin 2 11; Oil cylinder 9 upper ends link to each other with the frame 4 that moves about through bearing pin 5.

The operating principle of apparatus of the present invention is, the expanding-contracting action of control oil cylinder 9 drives the frame 4 that moves about and moves up and down along guide rail 3, makes the frame 4 that moves about to realize upper and lower motion in that derrick body 1 is inner, drives the top and drives 10 and carry out drillng operation.Drive hoisting rope 6, pressurization wire rope 8 and upper and lower end pulley through the top and realize that the top drives 10 upper and lower motion, and drive 10 on the top and apply certain pressure to drilling rod when descending.When the frame 4 that moves about moved up, the top was driven 10 drive drilling rods and is also moved up, and when the frame 4 that moves about moved down, the top was driven 10 drive drilling rods and also moved down, and realizes the function that makes a trip.

Apparatus of the present invention derrick body is set to general frame, has avoided conventional oil cylinder telescope pole epimere moving in hypomere, eliminates the derrick epimere and extend out to the gap that exists with derrick hypomere suit place behind the operating position; Realize that derrick is a general frame structure; Increase the bending rigidity of derrick, reduce the displacement of crown, reduce oil cylinder flexural deformation; Prolong the application life of oil cylinder, reduce the number of times that oil cylinder is changed oil sealing.

Claims

1. the band derrick of frame that moves about, it is characterized in that: comprise derrick body (1), the frame (4) that moves about is set in the derrick body (1), derrick body (1) inwall is provided with guide rail (3); The frame (4) that moves about is provided with four slide blocks (2), and the frame that moves about (4) cooperates installation through these four slide blocks (2) with guide rail (3);

The upper and lower end of frame (4) of moving about is respectively arranged with head sheave (12) and head sheave (13) down; Derrick body (1) lower end is connected with oil cylinder (9) lower end; Oil cylinder (9) upper end is connected with the frame that moves about (4);

Derrick body (1) inwall also is provided with rope holder (7), and rope holder (7) upper end is connected with the end that hoisting rope (6) is driven on the top, pushes up the other end that drives hoisting rope (6) and walks around and drive (10) with the top behind the head sheave (12) and link to each other; Rope holder (7) lower end is connected with an end of pressurization wire rope (8), and wire rope (8) other end that pressurizes is walked around down head sheave (13) and then driven (10) with the top and link to each other.

2. according to the move about derrick of frame of the said band of claim 1, it is characterized in that: described derrick body (1) is the general frame structure.

3. according to the move about derrick of frame of the said band of claim 1, it is characterized in that: described derrick body (1) lower end is connected with oil cylinder (9) lower end through bearing pin (11); Oil cylinder (9) upper end is connected with the frame that moves about (4) through bearing pin (5).