CN203441492U

CN203441492U - Reinforced cutting tooth

Info

Publication number: CN203441492U
Application number: CN201320461392.2U
Authority: CN
Inventors: 杨岗
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2014-02-19
Anticipated expiration: 2023-07-31

Abstract

The utility model relates to a reinforced cutting tooth which comprises a substrate and a tooth top part arranged on the substrate, wherein the tooth top part comprises a spherical tooth top, a cone frustum tooth body and a tooth top base; the substrate of the cutting tooth comprises a substrate upper part and a substrate lower part; the substrate upper part adopts a hollow structure; the hollow structure is provided with the tooth top part; moreover, a cone hole is formed in the head end of the top of the substrate upper part; a part or all of the cone frustum tooth body extends out of the cone hole. After the reinforced cutting tooth adopts the scheme, the service life, impact resistance and wear resistance of the tooth top are greatly improved; moreover, the reinforced cutting tooth has the advantages of high intensity, high wear resistance and high impact toughness.

Description

A kind of Enhanced cutting pick

Technical field

The utility model belongs to tunnelling machine, coal-winning machine and shield machine field, is specifically related to a kind of novel Enhanced cutting pick.

Background technology

In the prior art, development machine, combine and to adopt machine and shield machine is widely used in various collieries and tunnel piercing; Cutterhead is development machine, combines the critical piece of adopting machine and shield machine, and pick is fixed on cutterhead by toothholder, and pick adopts carbide alloy crown (being referred to as carbide alloy pick) conventionally, mostly is the profile of circular cone, and is directly fixed on corresponding base.In practical work process, cutterhead passes through pick cutting rock in the mode of impacting, and is main stressed member.

Wherein, when running into the higher rock stratum of hardness, be subject to larger shock loading and friction, the carbide alloy pick wearing and tearing on it are very fast, had a strong impact on the operating efficiency of road heading machinery and comprehensive mining machinery.

Its failure mode of the common pick of tradition mainly contains two kinds:

The one, along with the wearing and tearing rapidly of carbide alloy crown, pick rust, is difficult to rock formation effectively to cut, and the pick wearing and tearing on whole cutterhead acquire a certain degree, and drivage efficiency will significantly decline;

The 2nd, because pick matrix is arranged on toothholder; toothholder to pick matrix without radial constraint; pick matrix can be around toothholder central rotation; pick matrix abrasion resistance is low, and in work, pick matrix surrounding is prior to the sharp wearing and tearing of carbide alloy pick, when heavy wear; pick matrix has lost the support protective effect to crown; thereby make crown also completely not wear and tear and come off with regard to integral body, cut tooth losing efficiency, needs impact strength and the better pick of abrasion resistance in therefore producing.

Utility model content

In order to solve the problems of the technologies described above, the utility model provides the Enhanced cutting pick that a kind of impact resistance is strong, abrasion resistance is high.

It is as follows that the utility model solves the problems of the technologies described above taked scheme:

, comprise matrix and be located at the crown parts on matrix, described crown parts comprise spheroidal crown body, frustum of a cone tooth body and sloped footing, wherein, described sloped footing coordinates fastening with described pick matrix top taper hole; Described pick matrix comprises: matrix top and matrix underpart, and pick matrix top is arranged with crown and coordinates taper hole, is also provided with pick matrix underpart simultaneously and divides the interior screw thread being connected; The upper end that pick matrix underpart divides is provided with and the male thread that is connected of part on pick matrix, and bottom is also provided with a jump-ring slot for fixing with pick base.

Further, preferred structure is that described matrix top and matrix underpart are connected together by screw thread.

Further, preferred structure is that the bottom of described matrix underpart is provided with the jump-ring slot being connected with pick base.

Further, preferred structure is that at least a portion on described matrix top is provided with wearing layer, wherein, is also provided with a plurality of helicla flutes on the surface of wearing layer.

Further, preferred structure is that described wearing layer covers on the full surface in the district easy to wear on described pick matrix.

Further, preferred structure is that described pick matrix is connected with toothholder central rotation ground, and on described pick matrix, the surface of part is provided with described band spiral fluted high-strength abrasion-proof layer.。

After the utility model has been taked such scheme, avoided welding or hot pressing on the impact of crown, greatly improved impact resistance and the abrasion resistance of diamond crown, and there is high strength, high-wearing feature, high impact-resistant toughness.

Other features and advantages of the utility model will be set forth in the following description, and, partly from manual, become apparent, or understand by implementing the utility model.The purpose of this utility model and other advantages can be realized and be obtained by specifically noted structure in the manual write, claims and accompanying drawing.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the utility model is described in detail, so that above-mentioned advantage of the present utility model is clearer and more definite.

Fig. 1 is the structural representation of the utility model Enhanced cutting pick;

Fig. 2 is the structural representation of matrix top and the bottom of the Enhanced cutting pick of Fig. 1;

Fig. 3 is the structural representation of the utility model Enhanced cutting pick;

Fig. 4 is the structural representation of matrix top and the bottom of the Enhanced cutting pick of Fig. 3;

Fig. 5 is the structural representation of the pick matrix top wearing layer of the utility model Enhanced cutting pick;

Fig. 6 is the structural representation of the pick matrix top wearing layer of the utility model Enhanced cutting pick;

Fig. 7 is the structural representation of crown of the pick matrix of the utility model Enhanced cutting pick.

the specific embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.

As described in Fig. 1 and 2,7, be the structural representation of the Enhanced cutting pick of an embodiment of the utility model, it comprises: matrix and be located at the crown parts on matrix, described crown parts comprise spheroidal crown 11, frustum of a cone tooth body 12 and crown base 13; Described pick matrix comprises: matrix top 1 and matrix underpart 2, the inside on matrix top is hollow structure, and described hollow structure is provided with described crown parts, in addition, the top head end on described matrix top is provided with coniform hole 3, and the some or all of of described frustum of a cone tooth body 12 stretches out from described coniform hole.

More particularly, described matrix top and matrix underpart are by together with screwed connection, button 4 and matrix underpart screw thread 5 in matrix top, and at the top of matrix underpart, be provided with a connection push rod 7, described connection push rod contacts with described crown base, in a preferred embodiment, described junction is provided with welding groove, by described welding groove is welded together.

In addition, the bottom of described matrix underpart is provided with the jump-ring slot 9 being connected with pick base, and wherein, described pick matrix is connected with toothholder central rotation ground.

Wherein, when installing, the pretightning force of described crown by the matrix top and the bottom screw thread push rod that is connected is fastened in coniform hole, by being used for lower substrate junction on the pick of pretension, weld again, the impact of high temperature on crown composite bed and alloy base conjunctive tissue when welding or hot pressing have been avoided in such improvement, impact resistance and the abrasion resistance of Novel diamond complex have so greatly been improved, and there is high strength, high-wearing feature, these good characteristics of high impact-resistant toughness, can be applied in coal seam, during the pick of rock stratum is adopted, replace carbide alloy.

Wherein, Fig. 7 is described, described crown comprises: spheroidal crown body 11, frustum of a cone tooth body 12 and crown base 13, wherein, described base coordinates fastening with described pick matrix top taper hole, wherein, the diameter of base 13 is ￠ 5mm-￠ 35mm, the spherical radius R of spheroidal crown 11 is 0.5mm～8mm, and the thickness of the diamond layer of frustum of a cone tooth body 12 and crown base 13 is 0.2～3mm.

Wherein, as illustrated in Figures 5 and 6, at least a portion on described matrix top is provided with wearing layer, wherein, is also provided with a plurality of helicla flutes on the surface of wearing layer.

Wherein, described wearing layer covers on the surface in the district easy to wear on described pick matrix, this wearing layer can be taked the design of conventional wearing layer, and the carbine abrasion-proof layer as microplasma powder weld deposition or laser melting coating weldering form, strengthens the wear-resisting effect in matrix district easy to wear.

As the helicla flute 102 of the left-handed helicla flute 101 in Fig. 5 and the dextrorotation in Fig. 6, according to reality, use, left-handed helicla flute 101 is applied on development machine, left-handed helicla flute 101 and the helicla flute 102 of dextrorotation can be applied on coal-winning machine, and, facts have proved band spiral fluted pick matrix when work due to fully rotation of lateral forces, make pick matrix even wearing, increase the service life.

Wherein, crown can be used existing diamond composite, for example, and in a preferred embodiment, during making, by design parameters, need to produce the crown of reasonable size, on carbide alloy, put into diamond powder and cementing agent, after HTHP sintering forms, the tapering and the grinding of parameter size that on grinder tool, design are needed form, wherein, in an embodiment, the number of degrees (0-45o) of the tapering axis on crown base 13 and hypotenuse.

Fig. 3 is the structural representation of the utility model Enhanced cutting pick; Fig. 4 is the structural representation of matrix top and the bottom of the Enhanced cutting pick of Fig. 3;

Enhanced cutting pick in this embodiment and the difference of above-described embodiment be, the middle part of described matrix underpart is also provided with a cylinder table 6, is positioned at the below of the screw thread of described matrix underpart.

The utility model is on the basis of existing technology by conical crown, be improved to the crown that the frustum of a cone, spheroidal frustum combine, crown after improvement has adopted the near pretension of screw thread in taper fit hole, in addition, while being arranged on pick toothholder due to pick in prior art, pick matrix can be around toothholder central rotation, tradition pick pedestal abrasion resistance is poor, and rotation is inhomogeneous, and improve rear surface with spiral fluted high-strength abrasion-proof layer pick pedestal, rotation is not eccentric wear, impact resistance and abrasion resistance enhancing evenly.

And described pick matrix can provide good support to Novel diamond complex crown, described diamond complex crown replaces carbide alloy crown as digging tool cut rock.

Finally it should be noted that: the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.

All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.It will be understood by those skilled in the art that specific descriptions are above in order to explain the purpose of this utility model, not for limiting the utility model.Protection domain of the present utility model is limited by claim and equivalent thereof.

Claims

1. an Enhanced cutting pick, comprises matrix and is located at the crown parts on matrix, and it is characterized in that, described crown parts comprise spheroidal crown, frustum of a cone tooth body and crown base; Described pick matrix comprises: matrix top and matrix underpart, and the inside on matrix top is hollow structure, and the top head end on described matrix top is provided with coniform hole, the some or all of of described frustum of a cone tooth body stretches out from described coniform hole.

2. Enhanced cutting pick according to claim 1, is characterized in that, the outer diametric plane of described crown base and axis are 0-45 ° of angle.

3. Enhanced cutting pick according to claim 1 and 2, is characterized in that, described matrix top and matrix underpart are connected together by screw thread.

4. Enhanced cutting pick according to claim 3, is characterized in that, described junction is provided with welding groove, by described welding groove is welded together, makes it to become one.

5. Enhanced cutting pick according to claim 1 and 2, is characterized in that, the top of described matrix underpart is provided with a connection push rod, and described connection push rod contacts with described crown base.

6. Enhanced cutting pick according to claim 1 and 2, is characterized in that, the bottom of described matrix underpart is provided with the jump-ring slot fixing with pick base.

7. Enhanced cutting pick according to claim 1 and 2, is characterized in that, at least a portion on described matrix top is provided with wearing layer, wherein, is also provided with a plurality of helicla flutes on the surface of wearing layer.

8. Enhanced cutting pick according to claim 7, is characterized in that, described wearing layer covers on the full surface in the district easy to wear on described pick matrix.

9. Enhanced cutting pick according to claim 6, is characterized in that, described pick matrix is connected with toothholder central rotation ground.

10. Enhanced cutting pick according to claim 1, is characterized in that, the middle part of described matrix underpart is also provided with a cylinder table, is positioned at the below of the screw thread of described matrix underpart.