CN111173469A

CN111173469A - Eight-bead fisher for drilling tool

Info

Publication number: CN111173469A
Application number: CN202010128625.1A
Authority: CN
Inventors: 史占丰; 刘兆营
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-05-19

Abstract

The invention discloses an eight-ball fisher for a drilling tool, which comprises a connecting joint, a middle joint and a wide-mouth joint, wherein the lower end of the connecting joint is in threaded connection with the upper end of the middle joint, the lower end of the middle joint is in threaded connection with the upper end of the wide-mouth joint, the axes of the connecting joint, the middle joint and the wide-mouth joint are coaxial, an inner cylinder at the inner lower end of the wide-mouth joint is of a horn-shaped structure, an extension table is integrally formed on the outer wall at the lower end of the middle joint, a plurality of uniformly distributed ball cylinders are arranged on the upper end surface of the extension table and penetrate through the inner wall of the middle joint, the axes of the ball cylinders and the axis of the middle joint form an included angle of 7.5 degrees, and a; through the addition of wide-mouth festival for cracked drilling tool is caught more easily, and the centre gripping through the outside simultaneously is fastened, has avoided the deckle edge problem of cracked drilling tool, and through the removal orbit of the 7.5 of locking pearl, makes to be suitable for many diameter drilling tools, also makes to press from both sides tight pulling force bigger, and locking pulling force is bigger.

Description

Eight-bead fisher for drilling tool

Technical Field

The invention relates to the technical field of fishers, in particular to an eight-bead fisher for a drilling tool.

Background

Drilling tool fisher is the device that salvages the drilling tool, the drilling tool is in the use, because fatigue damage, the mar harm, the pulling force exceeds reasons such as rated tension, make the drilling tool fracture in the pit, cause the accident, current fisher is mostly the screw tap and salvages, the centre gripping is salvaged, this kind of fisher is when the hole is great, the location difficulty, and cracked edge is mostly burr thread, make the screw tap screw thread carry out the screw thread very slowly, centre gripping is salvaged and the screw tap is salvaged and all has the insecure problem of connection simultaneously, we provide a drilling tool eight pearl fisher for this reason.

Disclosure of Invention

In order to solve the problems, the invention provides an eight-bead fisher for a drilling tool, which adopts the following technical scheme:

the utility model provides an eight pearl fishers of drilling tool, includes link, middle festival and wide-mouth festival, the upper end of the lower extreme threaded connection middle festival of link, the upper end of the lower extreme threaded connection wide-mouth festival of middle festival, and the axis of link, middle festival and wide-mouth festival is coaxial, the interior lower extreme inner tube of wide-mouth festival is horn type structure, the lower extreme outer wall integrated into one piece of middle festival has the extension platform, a plurality of evenly distributed's a ball section of thick bamboo is seted up to the extension bench up end, and a ball section of thick bamboo runs through to the inner wall of middle festival, the axis of a ball section of thick bamboo becomes 7.5 contained angles with the axis of middle festival, ball section of thick bamboo upper end spiral shell dress shrouding, the roll-mounting has the locking pearl in the ball section of thick bamboo, it has the spring to press from both.

Preferably, the number of the ball barrels is eight, the lower end of each ball barrel is of a semi-open structure, and the diameters of the locking balls are the same as the diameter of each ball barrel.

Preferably, the outer wall integrated into one piece of connecting node has a spacing flange, and the diameter of spacing flange is less than the minimum external diameter of middle festival, the inner wall upper end integrated into one piece of wide-mouth festival has the fender position ring, the internal diameter of fender position ring is the same with the internal diameter of middle festival.

Preferably, the inner wall of the upper end of the connecting joint is provided with connecting threads, and a necking is formed on the inner wall of the connecting joint corresponding to the position of the limiting flange.

Preferably, the ball cylinder starts from the upper table of the extension table and extends to the lower end edge of the middle cylinder.

The invention has the beneficial effects that:

through the addition of wide-mouth festival for cracked drilling tool is caught more easily, and the centre gripping through the outside simultaneously is fastened, has avoided the deckle edge problem of cracked drilling tool, and through the removal orbit of the 7.5 of locking pearl, makes to be suitable for many diameter drilling tools, also makes to press from both sides tight pulling force bigger, and locking pulling force is bigger.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the front half section of the present invention;

FIG. 3 is a left side view of the present invention;

the device comprises a connecting joint 1, a middle joint 2, a ball cylinder 3, a ball cylinder 4, a sealing plate 5, a spring 6, a locking ball 7, a wide-mouth joint 8 and an extension table.

Detailed Description

The following detailed description of specific embodiments of the invention refers to the accompanying drawings.

As shown in fig. 1-3, the eight-ball fisher for drilling tools comprises a connecting joint 1, a middle joint 2 and a wide-mouth joint 7, which is a basic connecting structure of the fisher, the lower end of the connecting joint 1 is in threaded connection with the upper end of the middle joint 2, the lower end of the middle joint 2 is in threaded connection with the upper end of the wide-mouth joint 7, the axes of the connecting joint 1, the middle joint 2 and the wide-mouth joint 7 are coaxial, so that the overall basic connection of the fisher is realized, meanwhile, structural support is provided for subsequent use through coaxial control, an inner cylinder at the inner lower end of the wide-mouth joint 7 is of a horn-shaped structure, so that a broken drilling tool can be conveniently captured and guided in, an extension table 8 is integrally formed on the outer wall of the lower end of the middle joint 2, so that a space thickness support is provided for the arrangement of the ball cylinder 3, a plurality of ball cylinders 3 which are uniformly distributed are arranged on the upper end surface, the station of injecing is provided for inside spring 5 and locking pearl 6, the axis of ball section of thick bamboo 3 becomes 7.5 contained angles with the axis of middle section 2, and suitable structure that can be better reaches and provides better extrusion force for spring 5's effective promotion, 3 upper end spiral shell dress shrouding 4 of ball section of thick bamboo provide spacingly for spring 5, roll in the ball section of thick bamboo 3 and install locking pearl 6, through the change of position for the diameter of the circle of 6 inscribes of locking pearl changes, realizes the locking function then, it has spring 5 to press from both sides between shrouding 4 and locking pearl 6, provides power for the locking that resets of locking pearl 6.

Particularly, 3 quantity of ball section of thick bamboo are eight, can make locking pearl 6 evenly distributed around the section of thick bamboo wall of festival 2 in the middle of, guarantee the even of cohesion, the lower extreme of ball section of thick bamboo 3 is semi-open structure for locking pearl 6 can the equipartition roll-off 2 in the middle of the inner wall of festival, realize the locking cohesion to fracture drilling tool outer wall, the diameter of locking pearl 6 is the same for the diameter of ball section of thick bamboo 3, avoids rocking the influence locking.

Particularly, the outer wall integrated into one piece of connecting link 1 has limit flange, and limit flange's diameter is less than the minimum external diameter of middle section 2, prescribes a limit to the cooperation distance of combination institute in-process, avoids influencing the effective working length of middle section 2, the inner wall upper end integrated into one piece of wide-mouth section 7 has the fender position ring, the internal diameter of fender position ring is the same with the internal diameter of middle section 2, prescribes a limit to the accessory interval of middle section 2 and wide-mouth section 7, makes the drilling tool of catching can get into in the middle section 2 smoothly simultaneously.

Particularly, connecting thread has been seted up to the upper end inner wall of link 1, the inner wall of link 1 corresponds the forming of spacing flange position and has the necking down, conveniently is connected with the rig.

The ball barrel 3 is started from the upper table surface of the extension table 8 and extends to the lower end edge of the middle barrel.

The working principle is as follows: when the drilling tool is used, the connecting joint 1 is connected through a drill rod, the whole device is driven to rotate and push downwards, the wide-mouth joint 7 captures a fractured drilling tool and then slides into the middle joint 2, meanwhile, in an initial state, the locking balls 6 are positioned at the lowest end of the ball barrel 3 under the extrusion of the spring 5, when the fractured drilling tool slides into the middle joint 2, the locking balls 6 are pushed to slide upwards in the ball barrel 3, so that the locking balls 6 are completely retracted into the ball barrel 3, when the diameter of an inner tangent circle of the eight locking balls 6 is larger than the outer diameter of the drilling tool, the fractured drilling tool is completely sleeved, at the moment, the locking balls 6 slide out under the action of the spring 5 to lock the outer surface of the drilling tool, meanwhile, the drilling tool is used for pulling the drilling tool backwards through the drill rod, the outer surface of the drilling tool drives the locking balls 6 to extrude downwards under the action of pulling force, the larger the pulling force.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an eight pearl fishers of drilling tool, includes connecting link, middle festival and wide-mouth festival, its characterized in that: the upper end of festival in the middle of the lower extreme threaded connection of link, the upper end of the lower extreme threaded connection wide-mouth festival of festival in the middle, and the axis of link, middle festival and wide-mouth festival is coaxial, the interior lower extreme inner tube of wide-mouth festival is horn type structure, the lower extreme outer wall integrated into one piece of middle festival has the extension platform, a plurality of evenly distributed's a ball section of thick bamboo is seted up to extension bench up end, and a ball section of thick bamboo runs through the inner wall to middle festival, the axis of a ball section of thick bamboo becomes 7.5 contained angles with the axis of middle festival, ball section of thick bamboo upper end spiral shell dress shrouding, roll in the ball section of thick bamboo and install the locking pearl, it has the spring to press from both sides between shroudin.

2. The eight-bead fisher of the drilling tool according to claim 1, wherein: the number of the ball cylinders is eight, the lower end of each ball cylinder is of a semi-open structure, and the diameters of the locking balls are the same as those of the ball cylinders.

3. The eight-bead fisher of the drilling tool according to claim 1, wherein: the outer wall integrated into one piece of coupling joint has a limit flange, and limit flange's diameter is less than the minimum external diameter of middle festival, the inner wall upper end integrated into one piece of wide-mouth festival has the fender position ring, the internal diameter of fender position ring is the same with the internal diameter of middle festival.

4. The eight-bead fisher of the drilling tool according to claim 1, wherein: connecting threads are formed in the inner wall of the upper end of the connecting joint, and a necking is formed in the position, corresponding to the limiting flange, of the inner wall of the connecting joint.

5. The eight-bead fisher of the drilling tool according to claim 1, wherein: the ball cylinder is started by the upper table surface of the extension table and extends to the lower end edge of the middle cylinder.