CN201218099Y

CN201218099Y - Rotating cutter bit of coal mining machine

Info

Publication number: CN201218099Y
Application number: CNU2008200904627U
Authority: CN
Inventors: 董克维
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-21
Filing date: 2008-07-21
Publication date: 2009-04-08
Anticipated expiration: 2018-07-21

Abstract

The utility model discloses a rotary cutting pick of a coal winning machine, which comprises an alloy head, a cutting pick head, a cutting pick handle and cutting pick vanes. The rotary cutting pick is characterized in that the three same cutting pick vanes are uniformly distributed around the cutting pick head, the height of the cutting pick vanes closing to the top part of the cutting pick head is 1.5 mm, the height of the cutting pick vanes closing to the combination parts of the cutting pick head and a round platform is 2.5 mm, the width of the cutting pick vanes closing to the top part of the cutting pick head is 4 mm, the width of the cutting pick vanes closing to the combination parts of the cutting pick head and the round platform is 8 mm, the combination parts of the three same cutting pick vanes and the round platform refer to R10, and the lead angels on the two sides of the three cutting pick vanes are 2 mm. As the three cutting pick vanes are designed on the rotary cutting pick of the coal wining machine, the lead angle structures on the two sides of the three cutting pick vanes eliminate the relative resistance produced between the two cutting pick vanes, the three cutting pick vanes and the lead angles on the two sides of the cutting pick vanes enable the cutting pick to accurately rotate under the horizontal component force action of coal resistance, and the alloy head part is enabled not to be eccentrically worn, thereby the service life of the cutting pick is prolonged.

Description

The coal-winning machine rotary cutting bit

Affiliated technical field:

The utility model relates to a kind of coal-winning machine coal cutting instrument, especially a kind of coal-winning machine rotary cutting bit.

Background technology:

At present, the coal winning machine cutting bit that the coal mining scope of operation is used, be pick-like bit, the tooth head of this pick is cone-shaped, non-rotatable and rotatable two kinds of picks are arranged, State Intellectual Property Office disclosed a kind of coal-winning machine rotary cutting bit on January 16th, 2008, the patent No. is 200620022091, this coal-winning machine rotary cutting bit is owing at four fins of tooth head circumference uniform distribution, produce comparative resistance between two fins, and the rib top does not have chamfering can not produce lateral stress, thereby the angle of pick rotation is little, even rotation does not solve alloy head eccentric wear problem, does not reach to prolong the pick purpose in application life.

Summary of the invention:

The angle of rotating for the pick that overcomes existing coal winning machine cutting bit existence is little, even do not rotate non-rotatable deficiency, the utility model provides a kind of coal-winning machine rotary cutting bit, this coal-winning machine rotary cutting bit not only can overcome the deficiencies in the prior art, and the pick rotational resistance is little, has just protected the anglec of rotation of coal-winning machine rotary cutting bit when work.

The technical scheme that the utility model technical solution problem is taked is: be by the alloy head, cutting pick head, the pick handle, the pick wing is formed, cutting pick head is a taper, the cutting pick head top is the plane, the alloy head cooperates brazing to fix with the cutting pick head top plan, cutting pick head, the pick handle is an one, there is round platform cutting pick head and pick handle joint portion, the round platform diameter is 49.5 millimeters, three pick wings that the cutting pick head circumference uniform distribution is identical, three identical thriving height of pick on the cutting pick head are, near the pick top of the head is 1.5 millimeters, is 2.5 millimeters near cutting pick head and round platform place, and three identical picks are cautiously wide to be, near pick top of the head width is 4 millimeters, near cutting pick head and round platform junction width is 8 millimeters, and identical three pick wings and round platform joint portion are R10, and three identical pick wing dual-side lead angles are 2 millimeters.

The beneficial effects of the utility model are: because this coal-winning machine rotary cutting bit has designed three pick wings, three pick wing dual-sides have the lead angle structure, eliminated the comparative resistance of two interplane generations of pick, the lead angle of three pick wings and pick wing dual-side is under the effect of coal body resistance levels component, pick is accurately rotated, just protect not eccentric wear of alloy head, thereby prolonged the application life of pick.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model structural front view;

Fig. 2 is that the A-A of the utility model Fig. 1 throws view.

The specific embodiment:

Embodiment of the present utility model is: with reference to Fig. 1, Fig. 2, be by alloy head 1, cutting pick head 4, pick handle 6, the pick wing 3 is formed, cutting pick head 4 is a taper, cutting pick head 4 tops are the plane, alloy head 1 cooperates brazing to fix with cutting pick head 4 top plan, cutting pick head 4, pick handle 6 is an one, cutting pick head 4 has round platform 5 with pick handle 6 joint portions, round platform 5 diameters are 49.5 millimeters, three pick wings that cutting pick head 4 circumference uniform distributions are identical with 3, three the pick thriving height identical with the pick wing 3 on the cutting pick head 4 are, near 2 places, the pick crown is 1.5 millimeters, 5 places are 2.5 millimeters near cutting pick head 4 round platforms, three picks identical with the pick wing 3 are cautiously wide to be, near the pick crown 2 place's width is 4 millimeters, is 8 millimeters near cutting pick head 4 with round platform junction width, identical with the pick wing 3 three pick wings and round platform 5 joint portions are R10, three the pick wing dual-side lead angles 7 identical with the pick wing 3 are 2 millimeters, when using, this rotary cutting bit is installed on the coal mining machine roller, when the pick wing 3 touches coal body, under the effect of coal body resistance levels component, make coal-winning machine rotary cutting bit self rotation.

Claims

1, coal-winning machine rotary cutting bit, form by alloy head, cutting pick head, pick handle, the pick wing, it is characterized in that: three pick wings that the cutting pick head circumference uniform distribution is identical, three identical thriving height of pick on the cutting pick head are, near the pick top of the head is 1.5 millimeters, near cutting pick head and round platform place is 2.5 millimeters, three identical picks are cautiously wide to be, near pick top of the head width is 4 millimeters, near cutting pick head and round platform junction width is 8 millimeters, identical three pick wings and round platform joint portion are R10, and three identical pick wing dual-side lead angles 7 are 2 millimeters.