CN201433764Y

CN201433764Y - Cutterhead for longitudinal shaft type development machine

Info

Publication number: CN201433764Y
Application number: CN2009200473832U
Authority: CN
Inventors: 杜长龙; 王想; 李建平; 李宁宁; 朱永射
Original assignee: Xuzhou Zhongkuang Huaneng Mechanical & Electrical Technology Co ltd; China University of Mining and Technology CUMT
Current assignee: Xuzhou Zhongkuang Huaneng Mechanical & Electrical Technology Co ltd; China University of Mining and Technology CUMT
Priority date: 2009-06-26
Filing date: 2009-06-26
Publication date: 2010-03-31
Anticipated expiration: 2019-06-26

Abstract

The utility model relates to a cutterhead for a longitudinal shaft type development machine. Pick-shaped cutter tooth seats which are in spiral arrangement are welded on a cutterhead body, pick-shapedcutter teeth are arranged on the pick-shaped cutter tooth seats, tooth tips of the pick-shaped cutter teeth on a spiral line are arranged in sequence along a congruent spiral lift angle conical surface spiral line, a congruent spiral lift angle spherical surface spiral line and a plane surface spiral line, the last cutter tooth on the congruent spiral lift angle conical surface spiral line is thefirst cutter tooth on the congruent spiral lift angle spherical surface spiral line, and the last cutter tooth on the congruent spiral lift angle spherical surface spiral line is the first cutter tooth on the plane surface spiral line. Circumferential distribution angles alpha between tooth tips of adjacent pick-shaped cutter teeth on the spiral line are all equal, and a conical surface of the congruent spiral lift angle conical surface spiral line is in tangency with a spherical surface of the congruent spiral lift angle spherical surface spiral line. The utility model can adapt to the compression-tension effect during coal petrography cutting, improve the cutter tooth cutting conditions, reduce the cutter tooth consumption and the cutting dust production amount, and has the advantages of compact structure, uniform stress, stable performance and good use effect.

Description

A kind of Vertical Axis Road-header cutterhead

Technical field

The utility model relates to a kind of Vertical Axis Road-header cutterhead, is particularly useful for the driving and the exploitation of coal petrography in coal road, rock gangway, the underground construction.

Background technology

At present, boom-type roadheader is the capital equipment of extractive equipment and underground construction both at home and abroad, horizontal shaft type and longitudinal axis formula respectively have advantage all to obtain using widely, characteristics for Vertical Axis Road-header, can arrange the cut situation of effectively improving pick by pick, studies show that adapting to coal petrography presses Zhang Xiaoying to arrange the cut situation that pick can effectively improve pick.According to existing pick arrangement mode after adapting to coal petrography and pressing Zhang Xiaoying to arrange pick, can not make first the evenly distributed or crown of pick not when the same conical surface has caused cut the cutterhead load fluctuation big, the unsmooth whole discontinuity of cutterhead that causes of crown profile on the other hand, the cut condition is poor.Therefore, had a strong impact on the operating efficiency of Vertical Axis Road-header, caused the pick consumption big, consequence such as Dust Capacity is big.

Summary of the invention

Technical problem: the purpose of this utility model provides a kind of compact conformation, and is stressed even, stable performance, the Vertical Axis Road-header cutterhead that result of use is good.

Technical scheme: Vertical Axis Road-header cutterhead of the present utility model, on the body of the cutting head, be welded with a plurality of pick-like bit seats of shape arrangement in the shape of a spiral, be equipped with pick-like bit on the pick-like bit seat, lead angle cylindro-conical helixes such as the crown edge of a plurality of pick-like bits on helix, etc. the lead angle spheric helix, the snail line is arranged in order, etc. last pick on the lead angle cylindro-conical helix first pick on the lead angle spheric helix such as is, is first pick on the snail line etc. last pick on the lead angle spheric helix; The crown of adjacent pick-like bit all equates with the circumferential angle of distribution a of crown on helix; Etc. the conical surface of lead angle cylindro-conical helix with etc. the sphere of lead angle spheric helix tangent.

A plurality of pick-like bit seats that the shape in the shape of a spiral that welds on the described the body of the cutting head is arranged are two or three, and it is circumferential to be evenly distributed on the body of the cutting head; The circumferential angle of distribution a of described crown and crown is 20～50 °.

Beneficial effect: the utility model Vertical Axis Road-header cutterhead, select three kinds of curved surface helix assembled arrangement picks for use, adapt to coal petrography and pressed Zhang Xiaoying rule, the operating mode when effectively having improved the cutterhead cut.Cutterhead can be according to existing longitudinal axis formula type design connected mode, welding pick shape tooth toothholder on the body of the cutting head, the installing pick-like bit, same pick crown alignment curve is made up of three parts, first such as is at the lead angle cylindro-conical helix, second portion such as is at the lead angle spheric helix, and third part is the snail line.The conical surface and sphere are tangent, and formation seamlessly transits, and have improved pick force-bearing situation and cut condition.Lead angle helixes such as employing are arranged pick, kerf spacing L exponent function relation reduces, pressure Zhang Xiaoying in the time of under the prerequisite of evenly distributed pick, can adapting to the coal petrography cut, effectively solve in order to adapt to coal petrography and press Zhang Xiaoying and adopt non-homogeneous pick to arrange or adopt non-helical line to arrange to cause the problem of the big and chip removal difficulty of cutterhead load fluctuation, improved the pick cutting condition, can effectively reduce pick consumption, cut dust-producing amount, be specially adapted to press the tangible coal rock layer driving of Zhang Xiaoying.Its compact conformation, stressed even, stable performance, result of use is good.

Description of drawings

Fig. 1 is the utility model Vertical Axis Road-header cutterhead front view.

Fig. 2 is the utility model Vertical Axis Road-header cutterhead vertical view.

Among the figure: 1-the body of the cutting head, 2-pick box, 3-pick-like bit, lead angle cylindro-conical helixes such as 4-, lead angle spheric helixs such as 5-, 6-snail line, 7-taper seat, 8-sphere, 9-plane, L-kerf spacing, a-circumferential arrangement angle.

The specific embodiment

Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:

Shown in Figure 1, on the body of the cutting head 1, be welded with two a plurality of pick-like bit seats 2 of shape arrangement in the shape of a spiral, pick-like bit 3 is housed on the pick-like bit seat 2, lead angle cylindro-conical helixes 4 such as the crown edge of pick-like bit 3, etc. lead angle spheric helix 5, snail line 6 be arranged in order, etc. last pick on the lead angle cylindro-conical helix 4 first pick on the lead angle spheric helix 5 such as is, is first pick on the snail line 6 etc. last pick on the lead angle spheric helix 5.The crown of adjacent pick-like bit 3 all equates with the circumferential angle of distribution a of crown on helix, and is shown in Figure 2; Be the clear crown of pick-like bit 3 and the circumferential distribution angle of crown expressed, Fig. 2 (vertical view) has only reflected the pick-like bit on the wall scroll helix.Etc. the conical surface 7 of lead angle cylindro-conical helix 4 with etc. the sphere 8 of lead angle spheric helix 5 tangent.The circumferential angle of distribution a of crown and crown is 20～50 °.Lead angle helixes such as employing are arranged pick, and kerf spacing L exponent function relation reduces.The cutterhead size of the body of the cutting head 1 is set bar number, the number of pick-like bit 3, maximum kerf spacing L, the circumferential arrangement angle a of helix according to on-the-spot actual needs, use pick crown and pick center line location, adjust pick-like bit seat 2 it is welded on the body of the cutting head 1.Be sequentially arranged in etc. lead angle cylindro-conical helix 4, etc. on lead angle spheric helix 5, the snail line 6 adjacent pick-like bit 3 upwards be 20～50 ° in week and evenly arrange by angle a.Be arranged on the same cutterhead two or three by etc. lead angle cylindro-conical helix 4, etc. the helix formed of lead angle spheric helix 5, snail line 6 circumferentially evenly arrange at same cutterhead.

Claims

1. Vertical Axis Road-header cutterhead, it is characterized in that: on the body of the cutting head (1), be welded with a plurality of pick-like bit seats (2) of shape arrangement in the shape of a spiral, be equipped with pick-like bit (3) on the pick-like bit seat (2), the lead angle cylindro-conical helixes (4) such as crown edge of a plurality of pick-like bits (3) on helix, etc. lead angle spheric helix (5), snail line (6) is arranged in order, etc. last pick on the lead angle cylindro-conical helix (4) first pick on the lead angle spheric helix (5) such as is, is first pick on the snail line (6) etc. last pick on the lead angle spheric helix (5); The crown of adjacent pick-like bit (3) all equates with the circumferential angle of distribution a of crown on helix; Etc. the conical surface (7) of lead angle cylindro-conical helix (4) with etc. the sphere (8) of lead angle spheric helix (5) tangent.

2. Vertical Axis Road-header cutterhead according to claim 1 is characterized in that: a plurality of pick-like bit seats (2) that described the body of the cutting head (1) is gone up the arrangement of shape in the shape of a spiral of welding are two or three, are evenly distributed on the body of the cutting head (1) circumferentially.

3. Vertical Axis Road-header cutterhead according to claim 1 is characterized in that: the circumferential angle of distribution a of described crown and crown is 20～50 °.