CN202510032U

CN202510032U - Drill bit for hydraulic jumbo

Info

Publication number: CN202510032U
Application number: CN2012200551903U
Authority: CN
Inventors: 罗立山; 刘志华
Original assignee: ZHUZHOU TIANLI DRILLING TOOL CO Ltd
Current assignee: ZHUZHOU TIANLI DRILLING TOOL CO Ltd
Priority date: 2012-02-21
Filing date: 2012-02-21
Publication date: 2012-10-31
Anticipated expiration: 2022-02-21

Abstract

The utility model relates to a drill bit, in particular to a drill bit for a hydraulic jumbo. The drill bit comprises steel drill bit body and a working tabletop, wherein an outer dust discharging angle of the appearance of the steel drill bit body is larger than 10 degrees; side dust discharging grooves are uniformly distributed on the steel drill bit body; the working tabletop consists of a first tabletop and a second tabletop; the first tabletop is at an angle of 30 to 45 degrees, and the second tabletop serves as a middle transition, and is at an angle of 10 to 20 degrees; hard alloy particles are uniformly distributed on the first tabletop; and two top air holes are formed in the second tabletop, and one air hole is positioned within 10mm of the circumferential center of the drill bit, and has an inclination angle of smaller than 10 degrees, and the other air hole is close to the periphery of the drill bit, and is provided with a top dust discharging groove. The drill bit is high in tunneling speed and long in service life, consumption in resources for the manufacture of the drill bit is low, and consumption in energy sources for drilling is low.

Description

A kind of hydraulic jumbo drill bit

Technical field

The utility model relates to a kind of drill bit, particularly a kind of hydraulic jumbo drill bit.

Background technology

Drill bit is a kind of stone field that is widely used in, all kinds of minings, and urban construction, and the drilling tool of national basis Facilities Construction needs, but the rig of its use and drill bit kind thereof are a lot.

In the recent period; A kind of rig of hydraulic jumbo is because its drilling efficiency is high; Energy consumption is few and obtain the favor in market; But supporting with it chassis drill bit is in use because discontinuity, row's powder poor effect and early stage broken teeth occurs, fall tooth, collapse piece and the drill bit repeated wear causes drilling efficiency low short with the drill bit overall life.Repeated wear during owing to boring produces the waste that caused energy consumption of idle work when boring, has caused the big waste of tool to making the used resource of drill bit.

Summary of the invention

The purpose of the utility model just provides a kind of a kind of hydraulic jumbo drill bit of customer service prior art defective.

The technical scheme of the utility model realizes through following approach, contains drill bit rigid body and work top, wherein, drill bit rigid body profile efflux the powder angle 10 °, and be evenly distributed with the limit sludge groove on the drill bit rigid body; Work top is made up of first table top and second table top, and first table top is between 30 °-45 °, and second table top of middle transition is between 10o-20 °; Be evenly distributed with hard alloy particle on first table top; Second table top is provided with two top pores, and one is positioned at the 10mm near drill bit circle center, and the angle of inclination is less than 10 °; Another pore leans on the periphery of drill bit circumference and has the top sludge groove, and communicates with the limit sludge groove.

The utility model driving speed is fast, long service life, and drill bit making resource consumption is few, and boring uses energy consumption low.

Description of drawings

Fig. 1 is the structural representation of the utility model

Fig. 2 is the left view of Fig. 1

Fig. 3 is Fig. 2 A-A sectional drawing

Fig. 4 is Fig. 2 B-B part sectioned view

Wherein: top sludge groove (1), top pore (2), hard alloy particle (3), first table top (4), second table top (5), efflux powder angle (6), limit sludge groove (7), drill bit rigid body (8).

The specific embodiment

Describe the specific embodiment of the utility model in detail below in conjunction with accompanying drawing.

The utility model contains drill bit rigid body 8 and work top, wherein, drill bit rigid body 8 profiles efflux powder angle 6 10 °, and be evenly distributed with 7 limit sludge grooves 7 on the drill bit rigid body 8; Work top is made up of first table top 4 and second 5, and the angle of first table top 4 is between 30 °-45 °, and the angle of second table top 5 of middle transition is between 10 °-20 °; Be evenly distributed with 7 hard alloy particles on first table top 4; Second table top 5 is provided with 2, one at two top pores and is positioned at the 10mm near drill bit circle center, and the angle of inclination is less than 10 °; Another leans on the periphery of drill bit circumference and has top sludge groove 1, and communicates with limit sludge groove 7.

The technical barrier that this practical modified hydraulic jumbo drill bit is solved is to form carry out professional mould forging through the limit sludge groove 7 to drill bit rigid body 8; Make the well-regulated arrangement of metallic fiber of drill bit rigid body itself; Form an integral body; Can not help strengthening the intensity of drill bit rigid body, the early stage piece phenomenon that collapses in use unexpectedly occur because of machining limit sludge groove to the rupture failure of metallic fiber.Thereby also lowered the demand of single drill bit, be able to saving on the resource and on cost, be minimized resource.

Distribution to the hard alloy particle 3 of drill bit head is adjusted; Hard alloy particle on first table top 4 is evenly distributed on the rigid body; Each carbide alloy can evenly be born loading force is hit in the recoil of rock, help solving early stage broken teeth and the rigid body that the unbalance stress because of carbide alloy occurs and collapse the piece phenomenon.

Change to the distribution angle of carbide alloy; Be designed to the distribution carbide alloy table top of two angles; The angle of carbide alloy first table top 4 is spent between 45 degree 30 on the limit; The angle of carbide alloy second table top 5 of middle transition is 10 to spend between 20 degree, and the position, hole that helps when boring is used confirms, thereby has avoided the bias effect engineering design of bore position to require and cause scrapping in early days of drilling rod and drill bit because of the skew of bore position produces bending force.

To the design of two different angles of top pore 2 employings, one of them is near in the 10mm of drill bit circle center, and the angle of inclination is less than 10 degree; The high pressure draught that helps at work passing over through drilling rod is directly after the impact to the rock aspect; Air-flow drives crushed rocks to be passed through to play the effect that air-flow is discharged detritus and auxiliary rock outside the letdown tank tap of drill bit limit to all around, and another pore leans on the periphery of drill bit circumference and has top sludge groove 1; Accelerate the outer effect of detritus tap; Thereby the efficient of driving is significantly improved, reduced the energy consumption of unit pick petrosal foramen, increase work efficiency.

8 configuration designs efflux powder angle 6 greater than 10 degree to the drill bit rigid body, are beneficial to the discharge of detritus.Solved the problem of the repeated wear of drill bit.

Claims

1. a hydraulic jumbo drill bit contains drill bit rigid body (8) and work top, it is characterized in that, drill bit rigid body (8) profile efflux powder angle (6) 10 °, and be evenly distributed with limit sludge groove (7) on the drill bit rigid body (8); Work top is made up of first table top (4) and second table top (5), and the angle of first table top (4) is between 30 °-45 °, and the angle of second table top (5) of middle transition is between 10 °-20 °; Be evenly distributed with hard alloy particle (3) on first table top (4); Second table top (5) is provided with two top pores (2); One is positioned at the 10mm near drill bit circle center; The angle of inclination is less than 10 °, and another leans on the periphery of drill bit circumference and has top sludge groove (1), and communicates with limit sludge groove (7).

2. a kind of hydraulic jumbo drill bit according to claim 1 is characterized in that described limit sludge groove (7) and hard alloy particle (3) are 7.