CN202090918U

CN202090918U - Cutting tooth with alloy bars at shoulder

Info

Publication number: CN202090918U
Application number: CN2011201854735U
Authority: CN
Inventors: 孟凡友
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-03
Filing date: 2011-06-03
Publication date: 2011-12-28
Anticipated expiration: 2021-06-03

Abstract

The utility model discloses a cutting tooth with alloy bars at the shoulder, which belongs to cutting teeth. The cutting tooth with alloy bars at the shoulder structurally comprises a cylindrical conic-node hard alloy head, a cutting tooth shoulder, a sleeve snap spring and a cutting tooth handle. The cylindrical conic-node hard alloy head is arranged at the top of the cutting tooth shoulder, and the sleeve snap spring penetrates into the cutting tooth handle which is inserted into a tooth base. The cutting tooth shoulder is provided with a plurality of grooves, the hard alloy bars are arranged inside the plurality of grooves and obliquely arranged respectively along a cutting tooth axis, and the peripheries of the hard alloy bars are higher than the cutting tooth shoulder. Compared with the prior art, the cutting tooth with alloy bars at the shoulder can effectively avoid the defect that a cutting tooth is blocked in the tooth base or a tooth sleeve, and meanwhile has the advantages of increasing drilling capability, being good in effect of entering rock, quick in entering speed, prolonging service life of the cutting tooth and the tooth base and the like. Therefore, the cutting tooth with alloy bars at the shoulder has good popularization value.

Description

A kind of shoulder band alloy bar pick

Technical field

The utility model relates to a kind of pick, especially a kind of shoulder band alloy bar pick that is used for rotary drilling rig, coal mining machine and coal mine development machine.

Background technology

At present, the structure that is widely used in rotary drilling rig drill bit, coal mining machine cylinder, coal mine development machine big gun head pick is that the sleeve jump ring is snapped in the jump ring groove of pick, will be pressed into the pick of jump ring then in the toothholder or tooth cover that is welded on drill bit or cylinder or other shape drilling tool in advance.Drill bit is to rotate to move downward under the drive of rig in soil for Spiral digging machine; be contained in silt that the pick in the toothholder is easy to be rotated and enter stuck can not the rotation behind the toothholder; cause the head single face of pick to be ground off rapidly, the protection in tooth storehouse is very fast takes off from body because of the part loses to make alloy in the tooth storehouse.And because of a large amount of silts rub in the outside and endoporus at toothholder, the toothholder endoporus is become greatly, very quick-wearing attenuation of outside makes the weakened of toothholder and scraps very soon, makes rig not have cutting power at last.Tooth and toothholder are dug in revolving of having to exert more to renew, and increase use cost.For the coal mining machine; its cylinder is similar to the drill bit of rotary drilling rig; its drilling in coal seam and spoil or earth rock; the pick that is contained in the tooth cover is easy to by broken cash stuck in the tooth cover; the head that makes pick equally is by mill is inclined to one side rapidly; pick top alloy is come off because of losing protection prematurely, make pick lose cutting power.For coal mine development machine big gun head, when tunnelling, have a large amount of rubbles equally and silt enters in the pick toothholder, pick is stuck, pick is by eccentric wear rapidly, and alloy comes off too early, and pick loses cutting power, has to shut down the pick that more renews.At present, good solution is not also arranged.

The utility model content

Technical assignment of the present utility model is to provide a kind of shoulder band alloy bar pick at above-mentioned deficiency of the prior art, this a kind of shoulder band alloy bar pick has can avoid pick stuck defective in toothholder or tooth cover effectively, simultaneously can also increase the drilling ability, it is effective to go into rock, rate of penetration is fast, increases the characteristics in the application life of pick and toothholder.

The technical scheme that its technical problem that solves the utility model adopts is: it comprises cylindrical vertex of a cone hard alloy head, pick shoulder, sleeve jump ring and pick shank, described cylindrical vertex of a cone hard alloy head is arranged on the top of pick shoulder, described sleeve jump ring penetrates the pick shank, described pick shank inserts in the toothholder, described pick shoulder is provided with a plurality of grooves, be respectively arranged with the carbide alloy bar in described a plurality of groove, described carbide alloy bar is obliquely installed along the pick axis respectively, and the periphery of described carbide alloy bar is higher than the pick shoulder.

Described groove is 8, evenly is provided with along the pick shoulder.

A kind of shoulder band alloy bar pick of the present utility model is compared with prior art; has following outstanding beneficial effect: increase a plurality of grooves at the pick shoulder; in groove, stud with the carbide alloy bar; no matter rotary drilling rig or coal-winning machine and development machine; creep in the work in digging; the abrasion resistance of these carbide alloy bars is far longer than the abrasion resistance of pick parent; guard circle cylindricality vertex of a cone hard alloy head does not come off muchly; thereby guarantee the cutting ability of pick; the carbide alloy bar that is set in simultaneously in the pick shoulder groove is obliquely installed along the pick axis; and the periphery is higher than the pick shoulder; formed the muscle rib; the muscle rib has played dual effect when pick is worked; the one, the muscle rib has formed the rotation wing; when pick is worked because the interaction of power; the rotation wing can force pick to do the circumference spinning motion in toothholder or tooth cover; prevent stuck phenomenon; the 2nd, the muscle rib has cutting power well; the carbide alloy bar itself is exactly a cutter; it is rotary cutting at work; the cylindrical vertex of a cone hard alloy head at it and pick top has formed the function of similar Ni Zhifu drill; so not only protected cylindrical vertex of a cone carbide alloy difficult drop-off; increased the drilling ability of pick more, improved production efficiency and saved characteristics such as cost of production.

Description of drawings

Accompanying drawing 1 is a kind of main TV structure schematic diagram of shoulder band alloy bar pick;

Accompanying drawing 2 is plan structure schematic diagrames of a kind of shoulder band alloy bar pick;

Description of reference numerals: 1, cylindrical vertex of a cone hard alloy head, 2, the pick shoulder, 3, groove, 4, the carbide alloy bar, 5, the sleeve jump ring, 6, the pick shank, 7, toothholder.

The specific embodiment

Explain with reference to Figure of description 1 with below 2 pairs of a kind of shoulder band alloy bar picks works of the present utility model of accompanying drawing.

A kind of shoulder band alloy bar pick of the present utility model, its structure comprises cylindrical vertex of a cone hard alloy head 1, pick shoulder 2, sleeve jump ring 5 and pick shank 6, described cylindrical vertex of a cone hard alloy head 1 is arranged on the top of pick shoulder 2, described sleeve jump ring 5 penetrates pick shank 6, described pick shank 6 inserts in the toothholder 7, described pick shoulder 2 is provided with a plurality of grooves 3, be respectively arranged with carbide alloy bar 4 in described a plurality of groove 3, described carbide alloy bar 4 is obliquely installed along the pick axis respectively, and the periphery of described carbide alloy bar 4 is higher than pick shoulder 2.

Described groove 3 is 8, evenly is provided with along pick shoulder 2.

Under the driving of power source; rotary drilling rig drill bit, coal mining machine roller or driving machine gun head are rotating downwards or drilling forward; the active force that produces when rock stratum, silt or coal seam acts on pick; force pick to do the circumference spinning motion; avoid occurring pick stuck phenomenon in toothholder, thereby the cylindrical vertex of a cone hard alloy head 1 on protection pick shoulder 2 tops is difficult for coming off prematurely.

Be set in the carbide alloy bar 4 in pick shoulder 2 peripheral grooves 3, itself have good abrasion resistance and cutting ability, cylindrical vertex of a cone hard alloy head 1 cuts when creeping at the top, carbide alloy bar 4 is also carrying out rotary cutting, reduce pick so greatly and creep into resistance, not only reduce pick and change number of times, accelerated rate of penetration more, improved production capacity and production efficiency.

Except that the described technical characterictic of manual, be the known technology of those skilled in the art.

Claims

1. shoulder band alloy bar pick, comprise cylindrical vertex of a cone hard alloy head, pick shoulder, sleeve jump ring and pick shank, described cylindrical vertex of a cone hard alloy head is arranged on the top of pick shoulder, described sleeve jump ring penetrates the pick shank, described pick shank inserts in the toothholder, it is characterized in that: described pick shoulder is provided with a plurality of grooves, be respectively arranged with the carbide alloy bar in described a plurality of groove, described carbide alloy bar is obliquely installed along the pick axis respectively, and the periphery of described carbide alloy bar is higher than the pick shoulder.

2. a kind of shoulder band alloy bar pick according to claim 1, it is characterized in that: described groove is 8, evenly is provided with along the pick shoulder.