CN2218827Y

CN2218827Y - Grappling tool of cone sliding teeth

Info

Publication number: CN2218827Y
Application number: CN 94232052
Authority: CN
Inventors: 祝连生
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-26
Filing date: 1994-12-26
Publication date: 1996-01-31
Anticipated expiration: 2004-12-26

Abstract

The utility model relates to a grappling tool with cone sliding teeth, comprising a cone 1, the components 2 of the sliding teeth and a guide shoe 3. The grappling tool with cone sliding teeth is divided into two series: a male grappling tool with cone sliding teeth and a female grappling tool with cone sliding teeth, and is a necessary tool for drilling teams to treat underground accidents. The utility model can salvage underground small objects which can freely rotate but not cut thread as well as underground large objects which can not freely rotate. The grappling tool with cone sliding teeth can finish salvaging work with a hoister or a crane but no drilling machines or drilling tools. The utility model has the advantages of firmness, durability and long life time. Worn movable teeth can be replaced at any time, and the rest components are not discarded.

Description

Taper slip tooth fisher

The utility model relates to a kind of oilfield fisher.

When object under the oil well is salvaged by drilling crew before the utility model, what use is die nipple or female coupling tap fisher, die nipple (or female coupling tap) fisher is put under the oil well, when object is salvaged in contact, rotation die nipple (or female coupling tap), make die nipple (or female coupling tap) thread making on the quilt object of salvaging, even die nipple (or female coupling tap) is screwed onto with the object of being salvaged.Afterwards, promote die nipple (or female coupling tap) fisher to ground, the object of being salvaged also is thus lifted to ground with die nipple (or female coupling tap).But this die nipple (or female coupling tap) fisher can not be salvaged the object that the down-hole can freely be rotated.Because when rotation die nipple when (or female coupling tap), the object that can freely rotate can not produce relative motion with it, die nipple (or female coupling tap) is thread making thereon just also, also just can not salvage.

The purpose of this utility model provide a kind of can salvage can freely rotate object, also can salvage the all-round fisher of the object that can not freely rotate, i.e. taper slip tooth fisher.

Accompanying drawing 1 is the structural representation of die nipple shape slip tooth fisher.

Accompanying drawing 2 is structural representations of female coupling tap shape slip tooth fisher.

The utility model is achieved in that referring to accompanying drawing 1,2. If the object of will salvaging under the oil well has endoporus Tubular object can be connected the steel wire rope of hoist engine (or crane) with the top connection 14 of public grappling tool of cone sliding teeth; Slowly public grappling tool of cone sliding teeth is sent under the oil well afterwards; Slide dental assembly 2 this moment owing to Action of Gravity Field, fall down Spacer pin 12 places, when running into the down-hole object, guide shoe 3, cone 1 enters in the eyelet of object, slip dental assembly 2 In tooth 21 run into down-hole object eyelet inwall after, decline is obstructed, and cone 1 continues to descend, slip dental assembly 2 edges Move on the dovetail slideway 11 on the cone 1, move on to upper arresting pin 13 places always, move (phase on slip tooth group 2 stops For cone 1), at this moment, the weight of public grappling tool of cone sliding teeth is pressed in the down-hole by tooth 21 and is salvaged on the part tooth 21 for being tungsten steel product, not only hard but also sharp, and gravity makes tooth 21 embed the inwall of being salvaged object. On hoisting machine, put forward public affairs During grappling tool of cone sliding teeth, cone 1 rises, and is salvaged object because tooth 21 embeds, and slip dental assembly 2 is along dovetail Groove slideway 11 moves down, because dovetail slideway 11 is oblique, tooth 21 is outer swollen, tooth 21 embedding quilt salvaging objects The degree of depth of inwall increases, and the power of embedding strengthens, and this power is salvaged object greater than weight and the relevant resistance of being salvaged object Rise with public grappling tool of cone sliding teeth, until referred ground. Use female coupling tap shape if salvage rod member and small-bore pipe fitting Slip tooth fisher (referring to accompanying drawing 2), its course of work as mentioned above.

The utility model provides (referring to Fig. 1,2) with following embodiment, and it has two kinds of die nipple shape slip tooth fisher (referring to accompanying drawing 1), female coupling tap shape slip tooth fishers (referring to Fig. 2), and they are by cone 1, slip dental assembly 2, and guide shoe 3 three parts are formed; The design feature of cone 1 is: along several dovetail slideways 11 of cone 1 Surface Machining, there is lower limit pin 12 lower end of dovetail slideway 11, and there is upper arresting pin 13 upper end, the upper end solid welding of top connection 14 and cone 1.Slip dental assembly 2 is made up of tooth 21 and tooth body 22, and the upper end of tooth body 22 has gum, and tooth 21 places gum and solid welding, tooth body 22 lower ends to have dovetail 23, dovetail 23 to insert in the dovetail slideway 11 in the cone 1.

Dovetail slideway 11 processing of die nipple shape slip tooth fisher are on the inclined-plane of the external surface of cone 1; Guide shoe 3 is conical, and the awl point is downward, the lower end solid welding of frustum and cone 1.Dovetail slideway 11 processing of female coupling tap shape slip tooth fisher are on the inclined-plane of the inner surface of cone 1, and guide shoe 3 is tubaeform, and big mouthful of loudspeaker downwards, the lower end solid welding of osculum and cone 1.

The utility model has four big advantages:

1, both can salvage the short and small object that can freely rotate, also can salvage the big article that can not freely rotate.

Needn't there be hoist engine or crane just can finish salvage by rig and drilling tool when 2, salvaging.

3, sturdy and durable, the life-span is long.The slip tooth can be changed at any time if any damage, and remaining part can not scrapped.

4, make simply, as long as have lathe, planer just can produce, cost is also low.

Claims

1, a kind of taper slip tooth fisher is characterized in that it is made up of cone 1, slip dental assembly 2, guide shoe 3 three parts;

The design feature of A, cone 1 is: along several dovetail slideways 11 of cone 1 Surface Machining, there is lower limit pin 12 lower end of dovetail slideway 11, and there is upper arresting pin 13 upper end, the upper end solid welding of top connection 14 and cone 1;

B, slip dental assembly 2 are made up of tooth 21 and tooth body 22, and the upper end of tooth body 22 has gum, and tooth 21 places gum and solid welding, and there is dovetail 23 lower end of tooth body 22, and dovetail 23 is inserted in the dovetail slideway 11 of cone 1.

2, according to the fisher described in the claim 1, it is characterized in that dovetail slideway 11 processing on the inclined-plane of the external surface of cone 1, guide shoe 3 is conical, the awl point is downward, the lower end solid welding of frustum and cone 1.

3, according to the fisher described in the claim 1, it is characterized in that: dovetail slideway 11 processing are on the inclined-plane of the inner surface of cone 1, and guide shoe 3 is tubaeform, and big mouthful of loudspeaker downwards, the lower end solid welding of osculum and cone 1.