CN205477456U - PDC drill bit uninstallation device - Google Patents

Abstract

The utility model discloses a PDC drill bit uninstallation device, including uninstallation head and the body of rod, uninstallation head and body of rod fixed connection, unload overhead be equipped with with PDC drill bit wing assorted wing mouth, be equipped with the elasticity inner liner on the inner wall of wing mouth, the elasticity inner liner is the rubber layer, and the uninstallation head all adopts high strength steel to make with the body of rod, this kind of PDC drill bit uninstallation device, simple structure, the cost of manufacture is low, application scope is wide and convenient to use, can effectual improvement mine in the pit to operation workman's security during discharge rate and the uninstallation of drill bit on the drilling rod, also reduced workman's the intensity of labour and the life of improvement drill bit simultaneously, provide a special tool of unloading for on -the -spot drill bit.

Description

A kind of PDC drill bit discharge mechanism

Technical field

This utility model relates to PDC drill bit dismounting technical field, unloads particularly to a kind of PDC drill bit and carries Put.

Background technology

Coal mine operation it is frequently necessary to by bore detecting geological transformation situation, and mash gas extraction etc., But during drilling, due to rig and the effect of rock stratum resistance, cause existing between drilling rod and drill bit the biggest The power that screws up, and cannot unload, on-the-spot through frequently with hammer or other instrument percussive drill bit, make drill bit and brill After bar loosens, manual type is used to be backed out by drill bit.In this, unloading manner is not only wasted time and energy, and to PDC Drill bit infringement is serious, even damages.Especially diamond compact present on drill bit wing is caused serious damage Bad, cause bit life to shorten.

Utility model content

This utility model purpose is to solve the deficiency of drill bit unloading manner after underground coal mine has been drilled, Provide a kind of PDC drill bit discharge mechanism, can effectively improve the unloading speed of drill bit on down-hole drilling rod Safety to operator when degree and unloading, also reduces the labor intensity of workman simultaneously and improves drill bit In service life, provide a kind of special tool of unloading for on-the-spot drill bit.

This utility model provides a kind of PDC drill bit discharge mechanism, including: unload carrier head and the body of rod, unloading Head and the body of rod is fixing connects, unloads carrier head and is provided with the wing mouth matched with PDC drill bit wing, wing mouth interior Wall is provided with flexible liner layer.

Further, described flexible liner layer is rubber layer, unloads carrier head and the body of rod all uses high strength steel to make.

Further, described in unload carrier head be cylinder, the internal diameter of cylinder matches with the external diameter of PDC drill bit, Multiple wing matched with size with PDC drill bit wing shape is offered vertically on the inner periphery of cylinder Mouthful.

Further, the upper end of the described body of rod is welded on the outer surface of cylinder.

Further, the body of rod is expansion link.

Further, the described body of rod is provided with a through hole.

Compared with prior art, the beneficial effects of the utility model are:

1) unload carrier head to be matched with the wing of PDC drill bit by wing mouth, by rotating the body of rod or fixing bar Body rotary rig, carries out unloading PDC drill bit, the cutter to PDC drill bit of the flexible liner layer on wing mouth inwall The wing is protected, it is to avoid the diamond compact on the wing of PDC drill bit unloading during with wing mouth Directly effect is damaged, and improves the service life of PDC drill bit, this device applied range, uses Convenient.

2) rubber layer carries out good protection to the wing of PDC drill bit, simultaneously rubber layer can with Reusability, What high strength steel was made unloads carrier head and the body of rod, and service life is long, and cost of manufacture is low, easy to use.

3) unloading carrier head is cylinder, is socketed on PDC drill bit, and the wing on PDC drill bit sticks in wing mouth, Simple in construction, firmly connects, it is to avoid the wing on PDC drill bit damages.

4) body of rod is welded on the outer surface of cylinder, and it is more firm that Welding Structure can make it connect, and bears torsion It is hardly damaged during square, increases the service life.

5) body of rod is the length that expansion link according to actual needs, can change bar, increases moment or easily consolidates Fixed, easy to use.

6) through hole is easy to the movement to discharge mechanism and suspension, provides help when fixing the body of rod.

Accompanying drawing explanation

The structural representation of the PDC drill bit discharge mechanism that Fig. 1 provides for this utility model embodiment.

The knot of a kind of PDC drill bit that PDC drill bit discharge mechanism that Fig. 2 provides for this utility model is off-loadable Structure schematic diagram.

Description of reference numerals:

1-unloads carrier head, the 2-body of rod, 3-wing mouth, 4-rubber layer, 5-through hole, 6-wing.

Detailed description of the invention

Below in conjunction with the accompanying drawings, a detailed description of the invention of the present utility model is described in detail, but it should Understand that protection domain of the present utility model is not limited by detailed description of the invention.

As it is shown in figure 1, a kind of PDC drill bit discharge mechanism that this utility model embodiment provides, including unloading Carrier head 1 and the body of rod 2, unload carrier head 1 and the fixing connection of the body of rod 2, unload carrier head 1 and be provided with and PDC drill bit cutter The wing mouth 3 that the wing 6 matches, the inwall of wing mouth 3 is provided with flexible liner layer.

The quantity of wing mouth 3 and size match with quantity and the size of the wing 6 of PDC drill bit, elastic in Lining is attached on the inwall of wing mouth 3.

Further, described flexible liner layer is rubber layer 4, unloads carrier head and the body of rod all uses high strength steel Become.

The thickness of rubber layer 4 matches with the size of the diamond compact on PDC drill bit wing, rubber The thickness of layer 4 is typically set to 3-5mm, and high strength steel is steel alloy, such as: manganese steel, such as: 30CrMnSiA, Can bear bigger torsion, service life is long, and cost of manufacture is low, easy to use.

Further, described in unload carrier head 1 for cylinder, the internal diameter of cylinder and the external diameter of PDC drill bit match, Multiple wing matched with size with PDC drill bit wing shape is offered vertically on the inner periphery of cylinder Mouthful.

As depicted in figs. 1 and 2, the wing 6 of PDC drill bit is directed at wing mouth 3, carrier head 1 will be unloaded and be enclosed within On PDC drill bit, it is provided that circumferencial direction spacing, then, manual type is used to rotate the body of rod 2 or fixing The body of rod 2 rotates rig, can complete the unloading of drill bit, and in uninstall process, rubber layer provides and bores PDC The protection of head wing 6, particularly the protection of the diamond compact on PDC drill bit wing 6, improves The service life of drill bit.

Further, the upper end of the described body of rod 2 is welded on the outer surface of cylinder.

The body of rod 2 is welded on the outer surface of cylinder, and it is more firm that Welding Structure can make it connect, and bears moment of torsion Time be hardly damaged, extend discharge mechanism service life.

Further, the body of rod 2 is expansion link.

Can according to actual needs, by the length of the flexible change body of rod 2, increase moment or easily fix, Easy to use.

Further, the described body of rod 2 is provided with a through hole 5.

Through hole 5 is easy to the movement to discharge mechanism and suspension, provides help, unloaded when fixing the body of rod 2 Cheng Hou, can be suspended on article room by through hole 5 by discharge mechanism.

Only several specific embodiments of the present utility model disclosed above, but, this utility model embodiment Being not limited to this, the changes that any person skilled in the art can think of all should fall into guarantor of the present utility model Protect scope.

Claims (6)

1. a PDC drill bit discharge mechanism, it is characterised in that including: unload carrier head and the body of rod, unload carrier head Connection fixing with the body of rod, unloads carrier head and is provided with the wing mouth matched with PDC drill bit wing, the inwall of wing mouth It is provided with flexible liner layer.

2. PDC drill bit discharge mechanism as claimed in claim 1, it is characterised in that described flexible liner Layer is rubber layer, unloads carrier head and the body of rod all uses high strength steel to make.

3. PDC drill bit discharge mechanism as claimed in claim 1, it is characterised in that described in unload carrier head and be Cylinder, the internal diameter of cylinder matches with the external diameter of PDC drill bit, and the inner periphery of cylinder offers vertically Multiple wing mouths matched with size with PDC drill bit wing shape.

4. PDC drill bit discharge mechanism as claimed in claim 3, it is characterised in that the described body of rod upper End is welded on the outer surface of cylinder.

5. PDC drill bit discharge mechanism as claimed in claim 1, it is characterised in that the body of rod is expansion link.

6. PDC drill bit discharge mechanism as claimed in claim 1, it is characterised in that set on the described body of rod There is a through hole.