WO2012075672A1

WO2012075672A1 - High efficiency cutting tooth

Info

Publication number: WO2012075672A1
Application number: PCT/CN2011/001764
Authority: WO
Inventors: 李仕清
Original assignee: Li Shiqing
Priority date: 2010-12-06
Filing date: 2011-10-24
Publication date: 2012-06-14
Also published as: CN102121351A; WO2012075671A1

Abstract

The present invention provides a high efficiency cutting tooth. The cutting tooth reduces cutting resistance or has a spin function, a high cooling efficiency, and a long service life, and comprises a cutting tooth block and a cutting tooth head. The cutting tooth is characterized in that: connected to the cutting tooth block is the cutting tooth head, 1 constituted thereon are a conical or ball nose cutter and an encircling conical block or an encircling arced block or a crack-resistant composite encircling conical block or a crack-resistant composite encircling arced block having a groove arranged thereon; 2 the encircling conical block or the encircling arced block or the crack-resistant composite encircling conical block or the crack-resistant composite encircling arced block has protrudingly arranged thereon the conical or ball nose cutter; 3 being in a staggered arrangement, at least one level of the encircling conical block or the encircling arced block or the crack-resistant composite encircling conical block or the crack-resistant composite encircling arced block has arranged thereon a groove or a crack-resistant composite groove or a dextrorotatory or levorotatory spiral groove or crack-resistant composite spiral groove; 4 the encircling conical block or the encircling arced block has arranged thereon a cutting blade or a crack-resistant composite cutting blade, a spare cutting blade, and a cutting face; 5 the cutting blade or the crack-resistant composite cutting blade has arranged thereon a slitting blade, and at least one row of the cutting blade or of the crack-resistant cutting blade has arranged thereon an indented blade or a crack-resistant composite indented blade.

Description

An effective pick

Technical field:

The invention relates to a high-efficiency pick that is used in a coal mining machine such as a shearer, a roadheader or the like in coal mine production.

Background

At present, the pick used in the coal mining equipment is composed of a pick head and a pick body. The front end of the pick head has a substantially single cone structure, and some of the pick heads are divided into cone tips with a large tip angle. And the cone structure with a small taper at the back, but there is no big difference in the cutting method. These picks have a large resistance when cutting the coal seam, which is easy to generate a large amount of heat, which accelerates the wear of the pick head. It also makes the coal mining machinery consume a lot of power. When the tip of the picking head is rounded and blunt, the friction is greater, the wear on the picking head is further accelerated, and the power consumption of the coal mining machine is further increased. As the resistance increases, the destructive power of the pick and the coal is further increased.

Summary of the invention:

The present invention has been made in view of the above problems. For the purpose of providing a new invention of the pick-up pick, the pick has high cutting efficiency, low resistance, high heat dissipation efficiency, long service life, remarkable energy saving effect, and greatly reduced the damage to the coal mining machine.

In order to achieve the above object, the present invention adopts the following technical solutions:

An efficient pick, involving various picks or various picks or various cutting picks, including a pick and a pick, the pick and the pick are coupled together, wherein On the picks of various picks or various picks or various cutting picks, a cone or round head 2 or a ring cone or ring arch or a crack resistant composite ring cone is provided. The body or the anti-cracking and anti-cracking composite ring arch, the end of the ring cone or ring arch or the anti-cracking composite ring cone or the anti-cracking composite ring, 3 or the part of the picking head that exposes the pick is a knife The shank, 4 or the rear of the shank is provided with a locating handle, the 5 shank or the shank of the shank is the shank of the picking body, the rear of the 6 shank is the front shank of the picking body, and the picking head is set at the cutting On the seat of the tooth body, the outer part of the cone tip or the round cutter head is provided with at least a primary ring cone or a ring arch body, at least one primary crack-resistant composite ring cone or a crack-resistant composite ring arch, a 7-ring cone or ring At least one groove or chute or at least one spiral groove or at least a knife seat or a front shank of the arc or crack resistant composite ring cone or crack resistant composite ring arch or pick body Composite with resistance to cracking or at least one recess or at least one crack crack composite chute composite helical groove crack, or cut 8 is provided with a seat within the projection and recess positioning the stem head mating teeth thereof.

An efficient pick, involving various picks or various picks or various cutting picks, including a pick and a pick, the pick and the pick are coupled together, wherein On a pick of various picks or various picks or various cutting picks, a taper tip or a blade 2 or a ring cone or ring arch or a crack resistant composite ring cone or The anti-cracking composite ring arch, the end of the ring cone or ring arch or the anti-crack composite ring cone or the anti-cracking composite ring, 3 or the part of the picking head that exposes the pick is the shank, 4 or The shank of the shank is provided with a locating handle, the 5 shank or the shank of the shank is the shank of the picking body, the rear of the 6 shank is the front shank of the picking body, and the taper or round head of the picking head Raised at 9 at least a primary ring or ring arch or at least a primary crack-resistant composite ring cone or anti-cracking composite ring, 7 or pick The front raft of the body is provided with at least one groove or at least one spiral groove or at least one crack-resistant composite groove or at least one crack-resistant spiral anti-fracture composite groove, 8 or the cutter body is provided with a protrusion and The cutter head of the locating handle is fitted.

A high efficiency pick, involving various picks or various picks or various cutting picks, including a pick body and a pick head, the pick body and the pick head being coupled together, characterized in that On the picks of various picks or various picks or various cutting picks, there are cone or round heads or ring cones or ring arches or crack-resistant composite ring cones or crack-resistant The rear portion of the compound ring arch, the ring cone or the ring arch or the crack resistant composite ring cone or the crack resistant composite ring, or the portion of the pick that exposes the pick is the shank, or the back of the shank The shank is provided with a shank, the shank or the shank of the shank is a cutter seat, and the rear of the knives is a front shank of the pick body, at least one ring cone or ring arch or at least one level crack resistant The composite annular cone or the at least one primary crack resistant composite ring arch is provided with a cutting edge or a crack resistant composite cutting edge, a secondary cutting edge or a crack resistant composite secondary cutting edge and a cutting face or a crack resistant composite cutting face, a cutting edge or Anti-cracking composite cutting edge, at least one notch edge on the cutting edge or the cutting edge or the crack-resistant composite cutting edge or the crack-resistant composite cutting edge Cracking composite recess edge.

Preferably, the pick shank or pick body exposed to the front end of the pick body on the picks of the various picks or the various picks or the picks of the various cutting picks The front handle has at least one groove or a left-handed or right-handed spiral groove, or at least one crack-resistant composite groove or at least one left-handed or right-handed crack-resistant, anti-cracking composite groove.

Preferably, at least one groove or a left-handed or right-handed spiral is present on the front seat of the pick of the various picks or various picks or various cutting picks of the high efficiency pick. a groove, or at least one crack-resistant composite groove or at least one left-handed or right-handed crack-resistant spiral crack-resistant composite groove.

Preferably, at least one of the toroids or the ring-shaped arcs of the various picks or the various picks or the various cutting picks of the high efficiency pick or at least one primary crack resistant composite cone or The cutting edge or the crack-resistant composite cutting edge and the cutting surface of the crack-resistant composite ring arch are provided with at least one primary cutting edge and a heat dissipating surface.

Preferably, on the toroid or ring arch of the various picks or various picks or various cutting picks of the high efficiency pick or at least one level of crack resistant composite ring cone or A cutting edge or a splitting edge or a crack-resistant composite cutting edge disposed on the split composite ring arch is provided with a notch edge or a crack-resistant composite notch, and the notch or crack-resistant composite notch extends rearward to form a heat sink Or crack-resistant composite heat sink.

Preferably, a keyway is provided on the picks of the various picks or the various picks or the various cutting picks involved in the high efficiency pick.

Preferably, on the picks or picks of the various picks or various picks or picks of the high efficiency picks, a taper or round head, 2 and a ring cone a body or ring arch or a crack resistant composite ring cone or crack resistant composite ring arch, or a ring cone or ring arch or a crack resistant composite ring cone or a crack resistant composite ring arch 3 is provided with at least one groove Or a chute or spiral groove or crack-resistant composite groove or crack-resistant composite chute or crack-resistant composite spiral groove, 4 or the rear of the shank is provided with a locating handle, 5 or the shank recess is formed as a positioning hole, 6 convex Starting from at least one stepped annular cone or ring arch or crack resistant composite ring cone or crack resistant composite ring arch, 7 having at least a first ring cone or ring arch or crack resistant composite ring cone or Resistance The split composite ring arch is provided with a cutting edge, a minor cutting edge and a cutting face or a crack-resistant composite cutting edge, a crack-resistant composite secondary cutting edge and a crack-resistant composite cutting face, 8 or a cutting edge or a crack-resistant composite cutting edge. a single feature having at least one primary cutting edge, 9 or a cutting edge or crack resistant composite cutting edge or a splitting edge or a crack resistant composite cutting edge provided with at least one notch or crack resistant composite notch The setting of features, or different combinations of two features, or different combinations of three features, or different combinations of four features, or different combinations of five features, or different combinations of six features, or different seven features Combinations, or different combinations of eight features, or all features are placed on the same pick.

Preferably, there is a small taper tip or a round cutter head at the front end of the pick-tooth head of the high efficiency pick.

Preferably, at least one left-handed or right-handed spiral groove or spiral crack-resistant composite groove having a spin function is disposed on the pick-up head of the high efficiency pick.

Preferably, a spiral groove or a chopper-resistant composite groove of a spin function is provided on the seat of the high efficiency pick.

Preferably, a protrusion of the protrusion and the recess of the positioning handle is disposed on the holder of the pick-tooth of the high-efficiency pick. Preferably, there is at least one groove or crack resistant composite groove on the toroid or ring arch of the pick of the high efficiency pick.

Preferably, there is at least one groove or crack-resistant composite groove on at least one of the primary crack-resistant composite annular cone or the crack-resistant composite ring arch of the high-efficiency pick.

Preferably, there is at least one groove or crack-resistant composite groove on the seat of the pick-tooth of the high-efficiency pick. Preferably, there is at least one left-handed or right-handed spiral groove or spiral anti-cracking composite groove on the seat of the high-efficiency pick.

Preferably, at least one groove or crack-resistant composite groove is formed on the front handle of the pick-tooth of the high efficiency pick. Preferably, at least one left-handed or right-handed spiral concave or spiral crack-resistant composite groove is formed on the front shank of the high-efficiency pick.

Preferably, there is at least one groove or crack-resistant composite groove on the pick-toothed shank of the high efficiency pick.

Preferably, there is at least one left-handed or right-handed swirling groove or a spiral crack-resistant composite groove on the pick-toothed shank of the high efficiency pick.

Preferably, a cutting edge and a heat dissipating surface are provided on the cutting edge and the cutting surface provided on the ring cone or the ring body of the pick-tooth head of the high efficiency pick.

Preferably, at least one annular cone or ring arch of the high efficiency pick or at least one primary crack resistant composite ring cone or complex

At least one primary cutting edge and a heat dissipating surface are provided on the cutting edge or the crack resistant composite cutting edge and the cutting surface of the closed arc.

Beneficial effects:

The high-efficiency picking can improve the punching efficiency by adopting the setting of the ring cone or the ring arch on the pick head. By setting the groove on the cutter head, the punching resistance can be effectively decomposed, and the anti-crack composite ring cone or anti-crack composite The arrangement of the ring arch and the anti-cracking composite groove and the one step enhance the defect of the cutter head during the process: the continuous and efficient function of the cutter head is extended. The setting of the spiral groove or the anti-cracking composite spiral groove realizes the spin function of the groove, which reduces the impact force on the cutter head and prolongs the service life of the cutter head, and the cutting edge setting realizes the cutting of the cutter head. Function, the setting of the notch edge improves the efficiency of the cutting bit. The anti-cracking compound cutting edge and the anti-cracking composite notch edge further increase the crack resistance of the bit, through the holder or front handle of the pick body. The groove or crack-resistant composite groove is arranged to increase the strength of the pick, and the pick-up is further enhanced by providing a left-handed or right-handed spiral concave or spiral anti-cracking composite groove on the cutter seat or the front handle of the pick body. The spin function.

BRIEF DESCRIPTION OF THE DRAWINGS:

The technical solutions and advantages of the present invention will be described in detail with reference to the accompanying drawings in which: Figure 1 is a schematic view of a high efficiency pick of the first embodiment of the present invention.

2 is a schematic view of a high efficiency pick of a second embodiment of the present invention.

3 is a schematic view of a high efficiency pick of a third embodiment of the present invention.

4 is a schematic view of a high efficiency pick of a fourth embodiment of the present invention.

Fig. 5 is a schematic view of a high efficiency pick according to a fifth embodiment of the present invention.

Fig. 6 is a schematic view of a high efficiency pick of a sixth embodiment of the present invention.

7 and 8 are schematic views of a high efficiency pick according to a seventh embodiment of the present invention.

detailed description:

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the high efficiency pick of the present invention will be described in detail with reference to the accompanying drawings. In Embodiments 1-7, a groove or a raised taper tip, a ring cone or a ring arc is mainly provided on the pick head. The cutting edge, the minor cutting edge and the cutting surface provided in the body are described as an example.

Embodiment 1

As shown in FIG. 1, the high efficiency pick of the first embodiment of the present invention includes a pick body 1 and a pick head 2, and the pick body 1 and the pick head 2 are coupled together on the pick head 2, The front facing cone or spherical surface is a front cone 6, and the front cone 6 is composed of a cone tip or a circular cutter head 3 and a ring cone or ring arch body 8, and a groove 4 is arranged on the ring cone or ring arch body 8, The rear portion of the nose cone 6 exposes the portion of the pick head 2 of the pick body 1 as the shank 7, the rear portion of the shank 7 is the seat 9 of the pick body 1, and the rear portion of the seat 9 is of the pick body The front portion is a front handle 10, and a reinforcing groove 20 is provided on the front handle 10.

According to the above configuration, since the groove 4 and the reinforcing groove 20 are provided on the pick body 1 and the pick head 2, the groove 4 has a ring cone or a ring body as compared with the conventional pick head. The conical surface of 8 decomposes the cutting effect, and can quickly disperse heat along the groove 4, thereby reducing the frictional resistance of the front cone 6, enhancing the heat dissipation effect, reducing the force of the picking head 2, and at the same time, strengthening The groove 20 reduces the force of the pick body 1 and increases the strength.

Embodiment 2

2, the high efficiency pick of the second embodiment of the present invention includes a pick body 1 and a pick head 2, the pick body 1 and the pick head 2 are coupled together, on the pick head 2, oriented The front tapered surface or the spherical surface is the front cone 6, and the front cone 6 is composed of a cone tip or a blade head 3 and a ring cone or ring arch body 8. The ring cone or ring arch body 8 is provided with a swirling groove 21 A spiral groove 22 is formed in the seat 9 of the rear pick body 1 of the front cone 6. According to the above configuration, since the spiral groove 22 and the spiral groove 21 are provided on the pick body 1 and the pick head 2, the pick has a remarkable spin action as compared with the conventional pick, and can be effectively decomposed The cutting head 2 and the seat 9 of the picking body 1 receive the punching force, and can quickly disperse debris and heat along the swirling groove 21 and the spiral groove 22, thereby reducing the friction of the front cone 6. The resistance enhances the heat dissipation effect, and the force on the pick head 2 is reduced. At the same time, the spiral groove 22 reduces the force of the pick body 1 and increases the strength, thereby prolonging the service life and improving the work efficiency.

Embodiment 3

As shown in FIG. 3, the efficiency pick of the third embodiment of the present invention includes a pick body 1 and a pick head 2, and the pick body 1 and the pick head 2 are coupled together on the pick head 2. The tapered or spherical surface facing forward is the front cone 6, and the front cone 6 is composed of a cone tip or a circular cutter head 3 and a ring cone or ring arch body 8, and a groove 4 is provided on the ring cone or ring arch body 8. The rear portion of the front cone 6 exposes the portion of the pick head 2 of the pick body 1 as the shank 7, the rear portion of the shank 7 is the seat 9 of the pick body 1, and the rear pick of the seat 9 The front part is a front handle 10, a groove 23 is provided on the shank 7, and a rib 24 is disposed on the rear pick body 1 of the front shank 10.

According to the above configuration, since the groove 4 and the groove 23 are provided on the pick head 2, the groove 4 has the conical surface of the ring cone or the ring body 8 decomposed and cut compared with the conventional pick head. The function of the heat can be quickly dispersed along the groove 4, thereby reducing the frictional resistance of the front cone 6, enhancing the heat dissipation effect, reducing the force of the pick head 2, and simultaneously, the groove 23 makes the pick body 1 The force is reduced and the strength is increased.

With such a configuration, in addition to the technical effect of the second embodiment, since the groove 4 is correspondingly formed on the shank 7 of the pick-tooth head 2, the punching resistance and the friction force are further reduced. The provision of the reinforcing ribs 24 on the rear pick body 1 of the shank 10 facilitates the smooth discharge of the debris and further improves the work efficiency.

Embodiment 4

4, the high efficiency pick of the fourth embodiment of the present invention includes a pick body 1 and a pick head 2, the pick body 1 and the pick head 2 are coupled together, and the pick head 2 is tapered Or the drawing head 3 and the ring cone or the ring arch 8 are arranged, and the spiral cone 21 and the ring-shaped composite spiral groove 25 are arranged on the ring cone or the ring body 8, and the ring cone or ring arc of the pick head 2 is provided. A spiral groove 22 is formed in the seat 9 of the rear pick body 1 of the body 8. The front portion of the rear pick body 1 of the seat 9 is a front handle 10, and a spiral groove 20 is formed in the front handle 10.

According to the above configuration, since the spiral groove 22 and the spiral groove 21 are provided on the pick body 1 and the pick-tooth head 2, the spiral groove 20 is provided on the front shank 10 of the pick body 1, so that the conventional pick-tooth phase In comparison, the pick has a stronger spin action, which can effectively decompose the cutting force received by the pick head 2 and the seat 9 of the pick body 1, and can disintegrate debris and heat along the spiral groove 21 and the spiral The groove 22 and the spiral groove 20 act to disperse rapidly, thereby reducing the frictional resistance of the front cone 6, enhancing the heat dissipation effect, and reducing the force of the pick head 2, while the spiral groove 22 causes the pick body 1 to be subjected to The force is reduced, and the crack-resistant composite spiral groove 25 provided on the spiral groove 21 increases the crack resistance of the pick head 2, thereby prolonging the service life and improving the work efficiency. As shown in FIG. 5, in the structure of the first to fourth embodiments, the high-efficiency pick of the fifth embodiment of the present invention has a raised taper tip from the pick head 2 or a ring tap below the boring head 3. A groove 4 is formed in the body or ring body 8 and the second ring cone or ring body 8, and a groove 5 is formed in the holder 9, and a positioning hole 26 is formed in the positioning handle 27 of the cutting head 2.

With such a configuration, in addition to the technical effects of the first to fourth embodiments, since the groove 5 formed in the holder 9 is formed, the punching resistance and the frictional force of the cutting head 2 can be further decomposed, and the heat dissipation can be further improved. The effect is further reduced by the manner in which the positioning holes 26 are formed in the locating shank 27 of the pick-up head 2.

Embodiment 6

As shown in FIG. 6, the high efficiency pick of the sixth embodiment of the present invention includes a pick body 1 and a pick head 2, and the pick body 1 and the pick head 2 are coupled together on the pick head 2, The tapered or spherical surface facing forward is the front cone 6, and the front cone 6 is composed of a cone tip or a circular cutter head 3 and a ring cone or ring arch 8. The rear portion of the nose cone 6 is a knife seat 9, a ring cone Or the cutting edge 10 is provided with a cutting edge 10 and a cutting surface 11, the cutting edge 10 is provided with a notch edge 15, and the notch edge 15 is provided with a crack-resistant composite notch 28, in the ring cone or ring body 8 The upper notch 15 and the crack-resistant composite notch 28 are formed with a heat dissipating groove 16 and a crack-resistant composite heat dissipating groove 29, and the front handle 18 is provided with a groove 5, and the rear portion of the front handle 18 is a rear handle, and the pick body A keyway 17 is provided on the first.

With such a configuration, since the coal seam is first punched with the taper tip or the round head 3 of a smaller diameter during the high-efficiency picking operation, the cutting edge 10 and the cutting face 11 are provided on the ring cone 8, and the cutting edge 10 is provided. The notch edge 15, the crack-resistant composite notch 28 and the crack-resistant composite heat sink 29 decompose the overall force of the pick by multiple times, so that the efficiency is higher, so that the decomposition resistance, the friction force, and the heat dissipation effect can be further enhanced. Work efficiency is further improved.

Implementation 7

As shown in FIG. 7 and FIG. 8, the high efficiency pick of the seventh embodiment of the present invention includes a pick-up pick 1 and a pick 2, and the pick-tooth 1 and the pick 2 are coupled together. On the pick-up head 2, the outwardly facing pick-up head 2 is provided with a recess 30 on the integral convex blade 33. The cutting edge 31 of the top pick-tooth head 2 of the recess 30 is provided with a notched edge 15, which is convex. The blade 33 protrudes from the crack resistant composite cutting face 32.

With such a configuration, since the chopper-shaped pick 1 in the high-efficiency picking operation is first used to cut the coal seam with a small crack-resistant composite cutting surface 32 and a convex blade 33, or a notch edge 15, the pick of the pick The whole force is subjected to multiple decompositions, so the efficiency is higher, the heat is more easily dissipated, and the force is also greatly reduced. Therefore, the decomposition resistance and the friction force and the heat dissipation effect can be further enhanced, and the work efficiency is further improved, so that the pick-up picks are The service life is greatly extended.

The configuration of the pick heads of all the above embodiments on different picks can decompose the punching resistance and the friction force, thereby improving the heat dissipation efficiency.

Although the above has a convex taper tip or round head 3, a ring cone or ring arch 8, and a groove 5 spiral groove 21, a spiral groove 22, a crack-resistant composite spiral groove, a convex blade The front portion may also be formed into a sharp knife shape, or a circular or convex blade 33 or a diamond shape, or a trapezoidal shape, a crack-resistant composite groove, a groove 20 or a ring-shaped arc body 8 provided with a cutting edge and a crack-resistant composite Cutting edge, minor cutting edge and cutting face, slitting and heat dissipating surface, notch The blade, the crack-resistant composite notch blade and the like are described as an example, but the high-efficiency pick of the present invention may also have a multi-stage annular cone or a ring arch or a plurality of grooves, a multi-stage cutting edge and a heat dissipating surface, and a concave surface. The cutting edge may also have a grooved structure on the pick body. In the above structure, the structure of the embodiment and any other form of combination may be employed in each stage of the structure in various picks or various cuts. Teeth or various cutting picks.

The above described preferred embodiments are illustrative and not restrictive, and the invention may be embodied and embodied in other ways without departing from the spirit and scope of the invention. All modifications that come within the scope of the claims are intended to be limited.

Claims

1 A high efficiency pick, involving various picks or various picks or various cutting picks, including a pick body and a pick head, the pick body and the pick head being coupled together, characterized in that , on the picks of various picks or various picks or various cutting picks, 1 cone or round head 2 or ring cone or ring arch or crack resistant composite ring a cone or a crack-resistant anti-crack composite ring arch, a ring cone or ring arch or a crack-resistant composite ring cone or a crack-resistant composite ring arch, 3 or a portion of the pick-tooth that exposes the pick The shank, 4 or the rear of the shank is provided with a locating handle, the 5 shank or the shank of the shank is the shank of the picking body, and the rear of the 6 shank is the front shank of the picking body, and the picking head is set at On the seat of the pick body, at least one of the 7-cone or round head and the ring-shaped cone or ring-arc or the anti-cracking anti-fracture composite ring cone or the anti-cracking anti-fracture composite ring arch is disposed at the rear a toroidal ring or ring arch or at least a primary crack-resistant composite ring cone or a crack-resistant composite ring arch, an 8-ring cone or ring-arc or a crack-resistant composite ring cone or a crack-resistant composite ring arch or section Tooth Providing at least one groove or chute or at least one spiral groove or at least one crack-resistant composite groove or at least one crack-resistant composite chute or at least one crack-resistant spiral anti-fracture composite groove on the knife seat or the front handle, 9 or the cutter body is provided with a protrusion corresponding to the recess of the locating handle, and at least one primary ring cone or ring arch or at least one primary crack resistant composite ring cone or at least one primary crack resistant composite ring arc The body is provided with a cutting edge or crack-resistant composite cutting edge, a secondary cutting edge or a crack-resistant composite secondary cutting edge and a cutting surface or a crack-resistant composite cutting surface, a slitting edge or a crack-resistant composite cutting edge, 11 cutting edges or slitting A single feature setting of a plurality of features of at least one notch edge or a crack resistant composite notch on a blade or crack resistant composite cutting edge or a crack resistant composite cutting edge, or a combination of two features, or three features Different combinations, or different combinations of four features, or different combinations of five features, or different combinations of six features, or different combinations of seven features, or different combinations of eight features, or nine different features Combination, or ten Different combinations of features, or all features are placed on the same pick.

The high efficiency pick according to any one of claims 1 to 4, wherein the picks of the various picks or various picks or various cutting picks are exposed to the front end of the pick body At least one groove or chute or left-handed or right-handed spiral groove, or at least one left-handed or right-handed anti-cracking composite groove or at least one anti-cracking composite slant a groove or at least one left-handed or right-handed anti-cracking anti-crack composite groove.

The high efficiency pick according to any one of claims 1 to 2, characterized in that, on the front seat of the pick body of the various picks or various picks or various cutting picks At least one groove or a left-handed or right-handed spiral groove, or at least one crack-resistant composite groove or at least one left-handed or right-handed crack-resistant spiral-resistant composite groove.

A high efficiency pick according to any one of claims 1 to 3, characterized in that at least one of the ring or ring arches of the various picks or various picks or various cutting picks or At least one primary cutting edge and a heat dissipating surface are provided on the cutting edge or the crack-resistant composite cutting edge and the cutting surface of the at least one primary crack-resistant composite annular cone or the crack-resistant composite annular arc.

5. A high efficiency pick according to any one of claims 1 to 4, characterized in that it is on the torus or ring arch of the various picks or various picks or various cutting picks or a cutting edge or a slitting edge or a crack-resistant composite cutting edge provided on at least one of the first-stage crack-resistant composite annular cone or the crack-resistant composite ring arch is provided with a notch edge or an overlapping anti-cracking composite notch, the notch Or the anti-cracking composite notch edge extends rearward to form a heat dissipating groove or overlap the anti-crack composite heat dissipating groove.

6. A high efficiency pick according to any of claims 1-5, wherein said various picks or various picks A keyway is provided on the pick body of the pick or the various cutting picks.

The high efficiency pick according to any one of claims 1 to 6, wherein the anti-cracking compound ring cone is formed on the picks of the various picks or various picks or various cutting picks. The height of the body or crack resistant composite ring arch is lower than the height of the step of at least one of the annular cone or ring arch or at least one of the primary crack resistant composite ring cone or the crack resistant composite ring arch.