CN105888672A

CN105888672A - Inclined freezing hole external clamp type freezing tube lowering device

Info

Publication number: CN105888672A
Application number: CN201410442969.4A
Authority: CN
Inventors: 蒲朝阳; 李尚泽; 杨明; 董新旺; 邵公育; 邓昀; 杨雪; 陈君; 邵晨霞; 袁辉
Original assignee: Beijing China Coal Mine Engineering Co ltd
Current assignee: Beijing China Coal Mine Engineering Co ltd
Priority date: 2014-09-02
Filing date: 2014-09-02
Publication date: 2016-08-24
Anticipated expiration: 2034-09-02
Also published as: CN105888672B

Abstract

The invention relates to an inclined freezing hole external clamp type freezing tube lowering device characterized by comprising three parts; the first part is used for connecting, twisting and sealing; the first part is provided with a central pipe, a torsion seat, a Y-type seal and a guide sleeve; the second part is used for externally clamping the freezing tube, provided with a slips, a tapper sleeve, a spring, a steel ball, a joint sleeve, a key pin and a bearing seat; the third part is used for driving an oil cylinder clamped by the slips, and provided with an oil cylinder barrel and a piston rod. The freezing tube lowering device is connected with an inclined shaft drilling machine main shaft; a hydraulic system can externally clamp the freezing tube, and a seal ring can seal the inner diameter of the freezing tube, thus circulating slurry while lowering the freezing tube; in addition, the freezing tube can be rotated along with the rotation of the main shaft, thus safely lowering the freezing tube in the inclined freezing hole.

Description

Freezing pipe device under a kind of tiltedly freezing hole external clamping

Technical field

The invention belongs to drilling machinery field, relate to freezing pipe device under a kind of tiltedly freezing hole external clamping.

Background technology

At present, colliery, China western part New Built Mine, use inclined shaft, slope development to become trend more；Such as the Inner Mongol built up Horse Tai Hao ore deposit main shaft, examine Kazakhstan element ore deposit main shaft etc..Construction freezing method need to be in succession used to dig when building inclines due to complex formation Well.Construction freezing method sinking shaft is around the coal mine inclined shaft pit shaft of pre-excavation, gets out and the tens of pit shaft coaxial line uniform freezing Knot hole, in hole under enter freezing pipe, then, by artificial cooling technology, make the water freezing in stratum, will loose aqueous ground change Become frozen soil, increase its strength and stability, completely cut off subsoil water, under the protection of frost wall, carry out the pick of inclined shaft underground engineering and build work Industry.

For inclined shaft freezing, have different schemes in theory, one be the most tiltedly freezing hole, two be the most straight freezing hole, three be Top and two help with bottom straight hole with inclined hole, four be that top inclined hole two is helped to use straight hole.Data is had to show, the most tiltedly freezing hole side The quantities and freeze chilling requirement and save most of drilling of case, the excavation amount of frozen soil is minimum, and cost is minimum；But the brill due to inclined hole Hole technology and matched process technology are not broken through, so, at present, the western inclines of China edge always in construction freezing method By the most straight freezing hole scheme.

At present, for oblique freezing hole, it is provided that device and the process of a set of safe lower freezing pipe are the most urgent.

Summary of the invention

Technical problem solved by the invention is to provide a kind of for oblique freezing hole, the device of freezing pipe under external clamping, it is achieved Safe and efficient lower freezing pipe.

In order to solve above-mentioned technical problem, the technical solution used in the present invention is: freeze under a kind of tiltedly freezing hole external clamping Knot pipe device, including three parts, Part I plays connection, torsion pass, sealing function, has central canal, torsion seat, and Y shape seals, Fairlead；Part II plays outer clip freezing pipe effect, has slips, tapered sleeve, spring, steel ball, convergence set, key pin, load bearing seat； Part III is the oil cylinder driving slips clamping.The main shaft of central canal upper end female thread and rig connects, lower end and torsion seat spiral shell Stricture of vagina connects, and fairlead and torsion seat are threaded, and Y shape is sealed between torsion seat and fairlead；A pair is had on central canal cylindrical Taper roll bearing, bearing outer ring and cylinder tube coordinate, and central canal passes in the middle of piston rod；Piston rod and load bearing seat upper end Threaded；Suspend in midair steel ball and convergence set in load bearing seat lower end, and convergence set lower end and tapered sleeve connect, and tapered sleeve is enclose by inner conical surface Slips, spring is arranged in the middle of slips and torsion seat.

Steel ball is had between described load bearing seat and convergence set.

In the middle part of described convergence set, key pin is installed.

Described slips is three-clove style structure, and inner surface is the conical surface.

The described piston in slips clamping cylinder and piston rod are one.

Owing to using technique scheme, this device is connected with slant rig main shaft, outside can being realized by hydraulic system Clamping freezing pipe, y-type seal ring seals freezing pipe, it is possible to achieve circulating fluid while lower freezing pipe, simultaneously drill spindle Rotarily drive and freeze tubing string rotation, from technique, realize the lower freezing pipe of safety.

Accompanying drawing explanation

Fig. 1 is the structural representation of freezing pipe device under this oblique freezing hole external clamping；

In figure: 1. the anti-bull stick 7. of bearing 5. cylinder tube 6. of central canal 2. upper press cover 3. round nut 4. circular cone rolling Piston rod 8. convergence set 9. steel ball 10. load bearing seat 11. key pin 12. torsion seat 13. spring 14. tapered sleeve 15. slips 16.Y shape Seal 17. fairlead 18. freezing pipes

Detailed description of the invention

With specific embodiment, freezing pipe device under oblique freezing hole external clamping is described further below in conjunction with the accompanying drawings:

Such as accompanying drawing 1, central canal 2, upper press cover 3, round nut 4, the sub-bearing 5 of circular cone rolling, cylinder tube 6, prevent Bull stick 7, piston rod 8, convergence set 9, steel ball 10, load bearing seat 11, key pin 12, torsion seat 13, spring 14, tapered sleeve 15, slips 16, Y shape sealing 17, fairlead 18, freezing pipe

First, this device being installed on the main shaft of slant rig, the crane on rig is sling freezing pipe tow to dominate On path, clamper righting clamping, the feeding system of rig runs and drives unit head reach, slowly by the fairlead of this device 17 and Y shape seal 16 insertion freezing pipes 18 endoporus in.There is gap between internal diameter and the freezing pipe 18 of slips 15, start liquid Pressure system, presetting system pressure of reserving, open reversal valve, oil cylinder cavity of resorption enters pressure oil, and piston rod 7 motion is upper to move, carrying Seat 10 is driven shifting, pulls convergence set 8, tapered sleeve 14 to move up simultaneously；Tapered sleeve 14 is wrapped in slips 15, presses bullet Spring 13, eliminates until spring 13 is pressed onto position, slips 15 and freezing pipe 18 gap, and continues outer clipping outside freezing pipe 18 Circle, until hydraulic system arrives the pressure set up.Freezing pipe 18 front end is welded with the freezing pipe docking entered down, after welding, Single freezing pipe is just and whole to freeze tubing string integral, starts the mud circulating system of rig, and rig fore-clamp holder is unclamped, rig Feeding system runs and drives unit head to move forward the most at a slow speed, promotes the whole post that freezes to enter down in oblique freezing hole, during, dynamic Power head main axis drives central canal 1 to rotate, and central canal 1 drives torsion seat 12 to rotate, and torsion seat 12 is driven by key pin 11 Convergence set 8 rotates, and drives the whole tubing string that freezes being clamped to rotate.Pressed from both sides by fore-clamp holder after base for post enters under this until whole freezing Living whole tubing string, mud circulating system stops.Hydraulic system reversal valve commutates, cylinder upper cavity oil oil-feed, promotes piston rod 7 descending, Driving load bearing seat 10 descending, convergence set 8 is descending, and tapered sleeve 14 is descending, and it is descending that dynamic slips 15 is tried hard to recommend in spring 13 release, slips 15 no longer outer clip freezing pipe 18 cylindricals, and freezing pipe 18 disengages gap, feeding system runs after driving unit head and moves, this device Also trip out from freezing pipe and move with after unit head, enter next one circulation.

Claims

1. freezing pipe device under an oblique freezing hole external clamping, it is characterised in that: include three parts, Part I rise connection, Torsion pass, sealing function, have central canal (1), torsion seat (12), and Y shape seals (16), fairlead (17)；The Two parts play outer clip freezing pipe effect, have slips (15), tapered sleeve (14), spring (13), steel ball (9), linking Set (8), key pin (11), load bearing seat (10)；Part III is the oil cylinder driving slips clamping, has cylinder tube (5), piston rod (7).The main shaft of central canal (1) upper end female thread and rig connects, lower end and torsion seat (12) Threaded, fairlead (17) and torsion seat (12) are threaded, and Y shape seals (16) in torsion seat (12) And between fairlead (17)；A pair taper roll bearing (4), bearing outer ring and oil is had on central canal (1) cylindrical Cylinder cylinder barrel (5) coordinates, and central canal (1) passes in the middle of piston rod (7)；Piston rod (7) and load bearing seat (10) Threaded upper ends connects；Load bearing seat (10) lower end suspends steel ball (9) and convergence set (8) in midair, under convergence set (8) End and tapered sleeve (14) are threaded, and tapered sleeve (14) encloses slips (15) by inner conical surface, and spring (13) is at card Install in the middle of watt (15) and torsion seat (12).

Freezing pipe device under oblique freezing hole external clamping the most according to claim 1, it is characterised in that: load bearing seat (10) And between convergence set (8), have steel ball (9).

Freezing pipe device under oblique freezing hole external clamping the most according to claim 1, it is characterised in that: convergence set (8) Key pin (11) is installed on circumference.

Freezing pipe device under oblique freezing hole external clamping the most according to claim 1, it is characterised in that: slips (15) For three-clove style structure, inner surface is the conical surface.

Freezing pipe device under oblique freezing hole external clamping the most according to claim 1, it is characterised in that: drive slips folder Piston and piston rod (7) in locking oil cylinder are integrative-structures.