CN202954742U - Spike bit - Google Patents

Abstract

The utility model relates to a spike bit which comprises a head portion and a tail portion. Long cone surfaces in 35 degrees-50 degrees are in streamline arrangement, and big powder drainage grooves are formed in the long cone surfaces. The big powder drainage grooves run through an axle direction of the head portion and are distributed evenly on periphery, and the number of the big powder drainage grooves is three to five. Outlets of vent holes are formed in the end surface of the head portion and different positions in the big powder drainage grooves. Two to three alloys are arranged on the end surface of the head portion. In the same condition, compared with the previous product use, efficacy of the spike bit can be improved 30% to 80%. Advanced processing technology is adopted, abrasion resistance of the spike bit surface and internal fatigue strength of the spike bit are increased, and the fact that overall service life of the spike bit is greatly prolonged is realized.

Description

A kind of wolf's fang drill bit

Technical field

The utility model relates to a kind of aeratic hidden hole, hydraulic jumbo drill bit series of products, particularly a kind of efficient wolf's fang drill bit.

Background technology

Aeratic hidden hole, hydraulic jumbo drill bit are mainly used in the probing eyelet in the fields such as ground ore deposit digging, the exploitation of stone field, national basis Facilities Construction.In recent decades, because the carrying out like a raging fire of the engineerings such as infrastructure construction both at home and abroad, mineral products excavation and development of real estate, the demand of drill bit is increasing year by year.When the drill bit use amount increases, bring the growth of oil plant required in the process of boring, electric power, manpower consumption and produce dust, noise, waste gas etc. the impact of environment is more and more caused people's attention.The measures such as drill bit rate of penetration and application life promote to improve effect, energy-conserving and environment-protective are problems that drill bit use, scientific research and manufacturing sector need to be resolved hurrily by improving, and this also meets the nation-building " amphitypy " requirement of society.

The drill bit head that generally uses in the market is designed to the monolithic construction of " middle part is the conical surface as plane+outer ring " or " middle part is continuous two conical surfaces as plane+outer ring ", the less sludge groove of vacant position layout behind the cloth tooth, the advantage of this series products be simple in structure, applicability is wider, but defective is also very obvious, mainly contains:

1, because the mid-plane area is larger, the reaction force that produces during work is also larger.It is slower to show as penetration rate on the one hand, inefficiency; The reflection stress wave of reaction force generation acts on the fatigue failure of accelerating steel body and alloy on the bit body on the other hand, causes drilling life of bit to reduce.

2, the sludge groove area only accounts for the 10-20% of drill bit head area, row's powder space is less, be unfavorable for during work that the landwaste after the fragmentation is in time discharged at the bottom of the hole, form secondary or repeatedly repeat broken phenomenon, when accelerating the wearing and tearing of alloy and steel body, reduce utilization rate and the drill bit rate of penetration of impact energy.

3, integral (drill) bit head and afterbody are connected as a single entity.When a side damages in advance, can not dismantle the part that utilization can also be used, cause the waste of resource.

Summary of the invention

The purpose of this utility model just provides a kind of efficient wolf's fang drill bit that overcomes defects, to improve product application life and energy-saving and cost-reducing.

The technical solution of the utility model realizes that by following approach it contains head and afterbody, and wherein, head is provided with 35 °-50 ° the long conical surface and becomes streamline to arrange, and the long conical surface is provided with large sludge groove; Large sludge groove perforation is axial head, and is evenly distributed on the circumference, and quantity has 3-5; The outlet of gravity vent arranges that at the end face of head and the diverse location in the large sludge groove end face of head is furnished with 2-3 grain alloy.

The utlity model has following characteristics:

1, because the conical surface is the streamline layout, stressed equalization when guaranteeing institute's geared surface work, drilling efficiency was obvious especially when efficient rock-breaking, drill bit used in soft rock, with comparing with in the past product use under the condition, can improve effect 30-80%.

2, head can connect with low blast spline, high blast spline and internal and external threads the multiple connecting modes of realization such as afterbody by trapezoidal thread or corrugated thread, guarantees that this series drill bit can support the use with impactor and the hammer drill of different model.Can in time change it when damaging such as a side during use, guarantee giving full play to of all component capabilities.

3, large sludge groove is designed with the landwaste that is beneficial to after the fragmentation and discharges fast; The gravity vent of different angles is conducive to the landwaste after the different aspects fragmentation is in time blown away, and the repetition when reducing rock drilling is broken, reaches the purpose that improves drilling efficiency.

4, the end face face is arranged 2-3 grain alloy, realizes the leading Drilling aperture in head center position, and the side is then according to the carbide button of the long-pending needs distribution different size of broken scar and quantity, guarantee that drill bit uses after, the wearing and tearing of alloy equal strength are scrapped.Select high-quality steel and alloy to be the basis, adopt advanced processing technology, increase abrasion resistance and the inner fatigue strength of bit face, realize increasing substantially of drill bit whole service life.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the utility model header planes figure;

Wherein: head 1, afterbody 2, large sludge groove 3, gravity vent 4, alloy 5, the conical surface 6.

The specific embodiment

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

The utility model contains head 1 and afterbody 2, and wherein, head 1 is 35 °-50 ° the long conical surface and becomes streamline to arrange, and the conical surface 6 is provided with large sludge groove 3; Large sludge groove 3 perforations are axial head 1, and are evenly distributed on the circumference, and quantity has 3-5; The outlet of gravity vent 4 is arranged at the end face of head 1 and the diverse location in the large sludge groove 3; The end face of head 1 is furnished with 2-3 grain alloy 5;

Head 1 and afterbody 2 also can adopt screw thread to connect, and thread connection can adopt trapezoidal thread or corrugated thread to connect, and head 1 also can adopt low blast spline, high blast spline or internal and external threads to connect with afterbody 2.

The design angle of large sludge groove 3 is 10 °-20 °, and quantity is 3-5, and respectively between 50-60mm and 20-30mm, large sludge groove area accounts for the 30-50% of drill bit head area for width and the degree of depth.

The angle of the conical surface with the hardness height of broken rock change, the high corresponding tapering of formation hardness increases, the low then tapering of formation hardness diminishes.The conical surface also can adopt many conical surfaces or parabola shaped (be the head top surface partial design becomes parabola shaped or spherical) to arrange according to the rock stratum, and when the conical surface increased with diameter, institute's cloth number of teeth guaranteed that also along with increase all carbide buttons break the stressed equalization of rock on the bit body.

Rock stratum and equipment situation according to different regions are selected suitable bite type, select model by contrast on probation in case of necessity.The product crude green body adopts special grinding apparatus to forge, and guarantees the product inherent quality and improves the processing effect.The strict special processing technique route of pressing is made, and guarantees product processing quality.Guarantee that by on-the-spot guidance or description the user correctly uses, properties of product are performed to ultimate attainment as far as possible.

Claims (4)

1. a wolf's fang drill bit contains head (1) and afterbody (2), it is characterized in that:

A) head (1) is 35 °-50 ° the long conical surface and becomes streamline to arrange, and the conical surface (6) is provided with large sludge groove (3);

B) large sludge groove (3) connect head (1) axially, and be evenly distributed on the circumference, quantity has 3-5;

C) outlet of gravity vent (4) is arranged at the end face of head (1) and the diverse location in the large sludge groove (3);

D) end face of head (1) is furnished with 2-3 grain alloy (5).

2. a kind of wolf's fang drill bit according to claim 1 is characterized in that described head (1) and afterbody (2) also can adopt screw thread to connect.

3. a kind of wolf's fang drill bit according to claim 2 is characterized in that described thread connection can adopt trapezoidal thread or corrugated thread to connect.

4. a kind of wolf's fang drill bit according to claim 1, the design angle that it is characterized in that described large sludge groove (3) is 10 °-20 °, quantity is 3-5, and respectively between 50-60mm and 20-30mm, the sludge groove area accounts for the 30-50% of drill bit head area for width and the degree of depth.

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