CN203271635U

CN203271635U - Safe dismounting device for smooth round drill rod

Info

Publication number: CN203271635U
Application number: CN 201320140986
Authority: CN
Inventors: 陈久福; 何帮林; 孙大发; 刘学军; 张赛; 王荣超
Original assignee: CHONGQING SONGZAO C&E Co Ltd
Current assignee: CHONGQING SONGZAO C&E Co Ltd
Priority date: 2013-03-26
Filing date: 2013-03-26
Publication date: 2013-11-06
Anticipated expiration: 2023-03-26

Abstract

The utility model discloses a safe dismounting device for a smooth round drill rod. The dismounting device comprises a connecting rod, an inner barrel, a sliding sleeve, clamping steel balls and a limit bolt, wherein the connecting rod is divided into a central rod and a clamping claw; one end of the inner barrel is embedded into the connecting rod and can slide axially with the connecting rod; the clamping claw of the connecting rod is inserted into a notch of the inner barrel; round holes are formed in the other end of the inner barrel; the clamping steel balls are placed in the holes; an opening end of the inner barrel is sleeved with the sliding sleeve; and the sliding sleeve can slide axially at the opening end of the inner barrel to press the clamping steel balls, so that the clamping steel balls can clamp four square openings of the smooth round drill rod. According to the dismounting device, the structural characteristic that four square openings are formed in a male thread end of the smooth round drill rod is utilized, the clamping steel balls clamp the four square openings of the drill rod, and the smooth round drill rod is dismounted by virtue of the torque force of a hydraulic drilling rig, so that the dismounting efficiency of the smooth round drill rod is improved, and potential safety hazards in a drill rod dismounting process are avoided.

Description

A kind of light face round bur bar dismounting device

Technical field

The utility model relates to a kind of light face round bur bar dismounting device and method that the drill rig components, particularly mining construction extraction borehole used in mine production are used hydraulic drill rig.

Background technology

Coal mine gas drainage mainly adopts the hydraulic drill rig extraction borehole of constructing in coal (rock) layer, coal-bed gas is carried out release, reaches the purpose of administering gas.For a long time, the extraction borehole construction adopts preposition water to distinguish that the axle hydraulic drill rig coordinates the construction of light face round bur bar mostly, the extraction borehole of constructing often needs tens to hundreds of root drilling rod, adopt between drilling rod and be threaded, drilling construction is to design attitude, drilling rod need to take apart in the hole by root, main artificial clamper, the fork spanner manpower of adopting of drilling rod dismounting for a long time dismantled, wherein artificial clamper is used for a drilling rod in holes for clamping, the fork spanner chucking manually provides the torsion dismounting after needing the four directions mouth of dismounting drilling rod.Waste time and energy at unloading process, in case and rig operation driver maloperation appears, start rig and drive the fork spanner counter-rotating, very easily cause the employee of dismounting drilling rod injured, even cause death by accident.

Summary of the invention

The technical problems to be solved in the utility model is: overcome the deficiency of existing light face round bur bar dismounting technique, provide a kind of light face round bur bar dismounting device, with quick, dismounting light face round bur bar.

The technical solution of the utility model is as follows:

A kind of light face round bur bar dismounting device, comprise connecting rod, inner core, sliding sleeve, screens steel ball and caging bolt, this device is to utilize light face round bur bar male thread end that the design feature of four directions mouth is arranged, adopt the screens steel ball to block cubic mouthful of drilling rod, by hydraulic drill rig self torsion dismounting light face round bur bar.

Described connecting rod has center-pole and claw two parts, be wherein a cylindrical body of rod in the middle of center-pole, front end is the end of thread that is connected with drilling rod, and the rear end is the link that is connected with chuck of rig, claw is symmetrically welded at cylindrical body of rod both sides, and claw plays the effect of restriction circumferential movement.

Described inner core one end edge is enclosed within on connecting rod, can do with connecting rod and endwisely slip, the connecting rod claw inserts in the inner core breach, inner core and connecting rod are rotated simultaneously, transmission fluid drilol press torsion, the inner core other end is arranged symmetrically with at least two circular holes, places respectively the screens steel ball that diameter is slightly less than the circular hole opening diameter in circular hole, the circular hole bottom arranges the first limited step, and the diameter in the hole that the first limited step surrounds is less than the diameter of screens steel ball.

Described sliding sleeve is enclosed within inner core and arranges a round-meshed end, can do at this end and endwisely slip, and in the rear and front end of the circular hole position of this end, position limiting structure is set respectively, the front end position limiting structure is arranged on the caging bolt on inner core, the rear end position limiting structure is that processing is at the second limited step of cylinder outer wall, slide over sliding distance on inner core by the restriction of the second limited step and caging bolt, this distance does not drop out in the hole with the screens steel ball and is as the criterion; When sliding into the inner core position of opening when sliding sleeve, extruding screens steel ball can make the screens steel ball radially move in the hole, blocks cubic mouthful of drilling rod, by hydraulic drill rig self torsion dismounting light face round bur bar.

Use the utility model, dismounting light face round bur bar can be completed with the rig self power, easy to operate, reduce labor intensive simultaneously, shorten the take-down time, reduce the security risk that adopts the fork spanner artificial unloading, application shows: adopt the utility model, the dismounting light face round bur bar time can shorten 30%, has stopped light face round bur bar dismounting security incident.

Description of drawings

Fig. 1 is the schematic diagram of connecting rod;

Fig. 2 is the schematic diagram of inner core;

Fig. 3 is the sectional drawing of A-A section in Fig. 2;

Fig. 4 is the schematic diagram of sliding sleeve;

Fig. 5 is the sectional drawing for B-B section in Fig. 4;

Fig. 6 is confined state 1 schematic diagram of a kind of light face of the utility model round bur bar dismounting device;

Fig. 7 is confined state 2 schematic diagrames of a kind of light face of the utility model round bur bar dismounting device;

In figure, connecting rod 1, inner core 2, sliding sleeve 3, screens steel ball 4, caging bolt 5, light face round bur bar 6, center-pole 1-1, claw 1-2, breach 2-1, circular hole 2-2, the first limited step 2-3, the second limited step 2-4.

The specific embodiment

Now by reference to the accompanying drawings the utility model is described in further detail.

As Fig. 1～shown in Figure 5, light face round bur bar dismounting device comprises connecting rod 1, inner core 2, sliding sleeve 3, screens steel ball 4 and caging bolt 5, it utilizes light face round bur bar male thread end that the design feature of four directions mouth is arranged, adopt screens steel ball 4 to block cubic mouthful of drilling rod, by hydraulic drill rig self torsion dismounting light face round bur bar 6.

Connecting rod 1 is divided into center-pole 1-1 and claw 1-2 two parts, and wherein center-pole 1-1 is that rig water commonly used is distinguished axle, and claw 1-2 is symmetrically welded at center-pole 1-1 both sides, and connecting rod 1 one ends are connected with chuck of rig, transmit rig torsion.

As Fig. 6, shown in Figure 7, inner core 2 one end edges are enclosed within on connecting rod 1, can do with connecting rod 1 and endwisely slip, connecting rod claw 1-2 inserts in the breach 2-1 of inner core, inner core 2 and connecting rod 1 are rotated simultaneously, transmission fluid drilol press torsion, inner core 2 other ends are arranged symmetrically with 4 circular hole 2-2, the circular hole bottom arranges the first limited step 2-3, places the screens steel ball 4 that 4 diameters are slightly less than the circular hole opening diameter in circular hole.Sliding sleeve 3 is enclosed within inner core 2 and arranges a round-meshed end, can do at this end and endwisely slip, and in the rear and front end of the circular hole position of this end, position limiting structure is set respectively, the front end position limiting structure is arranged on the caging bolt 5 on inner core 2, the rear end position limiting structure is that processing is at the second limited step 2-4 of cylinder 2 outer walls, by the sliding distance of the second limited step 2-4 and caging bolt 5 restriction sliding sleeves 3 on inner core 2, this distance does not drop out in the hole with screens steel ball 4 and is as the criterion; When sliding sleeve 3 slides into inner core 2 position of opening, extruding screens steel ball 4 can make screens steel ball 4 radially move in the hole, blocks cubic mouthful of drilling rod, by hydraulic drill rig self torsion dismounting light face round bur bar 6.

The mode of occupation of this provision for disengagement is as follows:

1) after borehole drilling proceeds to design attitude, take off rig water and distinguish assembly, light face round bur bar dismounting device is installed, after the rig power end is advanced into light face round bur bar 6 positions, the chuck of rig forward, make the male thread of connecting rod 1 be connected but not tighten with the box thread of light face

round bur bar

6,6 to one, light face round bur bar run of steel position in tractor hole;

2) slip inner core 2 to drilling rod four directions mouthful place, make 4 screens steel balls 4 alignment light face round bur bar 6 mouthful positions, four directions, promote sliding sleeve 3, press down screens steel ball 4 and make screens steel ball 4 compress drilling rod four directions mouthful, restriction drilling rod and inner core 2 relative to circumferentially rotating.

3) dismounting personnel operation rig manual clamper makes second of clamper chucking drilling rod four directions mouthful, and rig driver operation rig makes the chuck of rig counter-rotating, unclamps being connected of first drilling rod and second drilling rod.

4) the slip sliding sleeve 3, unclamp being connected of inner core 2 and drilling rod four directions mouthful, and the first drilling rod and taking off of manually reversing repeats above step and take off successively and remain drilling rod in the hole in.

Claims

1. a light face round bur bar dismounting device, comprise connecting rod (1), inner core (2), sliding sleeve (3), screens steel ball (4) and caging bolt (5), it is characterized in that:

Described connecting rod (1) has center-pole (1-1) and claw (1-2) two parts, wherein a cylindrical body of rod in the middle of center-pole (1-1), front end is the end of thread that is connected with drilling rod, and the rear end is the link that is connected with chuck of rig, and claw (1-2) is symmetrically welded at cylindrical body of rod both sides;

described inner core (2) one end edges are enclosed within on connecting rod (1), can do with connecting rod (1) and endwisely slip, the claw of connecting rod (1-2) inserts in the breach (2-1) of inner core (2), inner core (2) and connecting rod (1) are rotated simultaneously, transmission fluid drilol press torsion, the other end of inner core (2) is arranged symmetrically with at least two circular holes (2-2), place respectively the screens steel ball (5) that diameter is slightly less than the circular hole opening diameter in circular hole, the circular hole bottom arranges the first limited step (2-3), the diameter in the hole that the first limited step (2-3) surrounds is less than the diameter of screens steel ball,

Described sliding sleeve (3) is enclosed within inner core (2) and arranges a round-meshed end, can do at this end and endwisely slip, and in the rear and front end of the circular hole position of this end, position limiting structure is set respectively, the front end position limiting structure is arranged on the caging bolt (5) on inner core (2), the rear end position limiting structure is that processing is at second limited step (2-4) of cylinder (2) outer wall, by the sliding distance of the second limited step (2-4) and caging bolt (5) restriction sliding sleeve (3) on inner core (2), this distance does not drop out in the hole with screens steel ball (4) and is as the criterion; When sliding into inner core (2) position of opening when sliding sleeve (3), extruding screens steel ball (4) radially moves screens steel ball (4) in the hole, blocks cubic mouthful of drilling rod.