CN214464137U

CN214464137U - Coal mining machine roller suitable for cutting hard rock and hard coal

Info

Publication number: CN214464137U
Application number: CN202120576496.2U
Authority: CN
Inventors: 金建轩
Original assignee: SHANGHAI CHUANGLI GROUP CO LTD
Current assignee: SHANGHAI CHUANGLI GROUP CO LTD
Priority date: 2021-03-20
Filing date: 2021-03-20
Publication date: 2021-10-22
Anticipated expiration: 2031-03-20

Abstract

The utility model relates to a coal-winning machine cylinder that adaptation cutting hard rock and hard coal relates to the field of coal mining equipment, it includes truncation portion and detritus portion, the rotation diameter of truncation portion is greater than the rotation diameter of detritus portion, all install the pick that the cutting rock was used on truncation portion and the detritus portion, a plurality of picks distribute in the week side of truncation portion and detritus portion, the detritus portion be with the actuating mechanism coupling part of coal-winning machine, detritus portion rotates with the cutting part is synchronous under coal-winning machine actuating mechanism's drive, the cutting rock. To current coal-winning machine cylinder when broken hard rock and hard coal, the problem that the cutting force is not enough, this application has the effect of broken hard rock and hard coal that reinforcing cylinder local cutting force, cylinder can be comparatively smooth.

Description

Coal mining machine roller suitable for cutting hard rock and hard coal

Technical Field

The application relates to the field of coal mining equipment, in particular to a coal mining machine roller suitable for cutting hard rocks and hard coal.

Background

The drum of the coal mining machine belongs to an essential part of the coal mining machine and plays a role in cutting coal rocks and loading coal during mining. Under a plurality of geological conditions, coal rock is very hard and has very high toughness, under the working condition that the hardness coefficient f of the coal hardness rock is more than 5, the traditional roller can not achieve effective rock breaking capacity during cutting, the power consumption of the roller is very high, the cutting teeth are serious in acquiescence, and the consumption is large.

In view of the above-mentioned related art, the inventors have considered that it is necessary to improve the rock breaking capability of the drum.

SUMMERY OF THE UTILITY MODEL

In order to improve the broken coal and the broken stone ability of coal-winning machine cylinder, this application provides a coal-winning machine cylinder that adapts to cut hard rock and hard coal, possesses the effect that improves the local cutting force of cylinder.

The application provides a coal-winning machine cylinder that adapts to cut hard rock and hard coal adopts following technical scheme:

the utility model provides a coal-winning machine cylinder that adaptation cut hard rock and hard coal, includes truncation portion and detritus portion, the diameter of rotation of truncation portion is greater than the diameter of rotation of detritus portion.

Through adopting above-mentioned technical scheme, the diameter of rotation of truncation is greater than the diameter of rotation of detritus portion, and the circumference linear velocity of truncation is faster, and under the condition of the same angular velocity, truncation portion can produce bigger cutting force. The root of rock is cut off earlier through the portion of cuting, and the rock part that the rethread detritus portion will cut off the portion separation is smashed, and the rock breakage that the root was cut off is respectively more convenient.

Optionally, the part of cutting with the whole profile of detritus portion is cylindrical barrel and both coaxial settings, the stack shell diameter of the part of cutting is greater than the stack shell diameter of the detritus portion, the pick of a plurality of cutting rocks is all installed to the week side of the part of cutting and the week side of the detritus portion.

Through adopting above-mentioned technical scheme, the rotary mechanism of detritus portion and coal-winning machine is connected during the use, cuts the portion orientation and treats to exploit the rock, and the pick is for cutting the rock under the drive of cutting two barrels of portion and detritus portion.

Optionally, the picks on the truncation part are uniformly distributed in a circular array along the circumference of the truncation part.

Through adopting above-mentioned technical scheme, the pick is along the circumference evenly distributed of truncation portion, and truncation portion rotates the cutting in-process, and the atress condition is comparatively stable, and the rotation of truncation portion is also comparatively stable.

Optionally, the cutting teeth are provided with multiple groups along the axial direction of the cutting part, and the cutting teeth of each adjacent cutting tooth group are arranged alternately.

Through adopting above-mentioned technical scheme, the multiunit pick cuts the root of rock, under the circumstances that the rock root is thoroughly cut off to guaranteeing the cutting part, has reduced the cutting output of single pick to a certain extent, and the pick in each cutting tooth group sets up alternately, and the pick of each group can not cut the rock simultaneously, and then the cutting resistance of the cutting part that has reduced.

Optionally, the cutting teeth on the cutting part are provided with three groups, the three groups of cutting teeth are sequentially a first cutting tooth group, a second cutting tooth group and a third cutting tooth group along the axial direction of the cutting part, and the circumferential positions of the cutting teeth in the first cutting tooth group and the third cutting tooth group are the same.

Through adopting above-mentioned technical scheme, the pick on first pick group and the third pick group cuts the rock simultaneously, and the pick in the second pick group cuts the rock alone, reduces the cutting resistance of cutting part cutting in-process.

Optionally, the picks on the crushed rock portion are evenly distributed along the circumference of the crushed rock portion.

Through adopting above-mentioned technical scheme, the contact frequency of pick and rock is comparatively stable on the detritus portion, and the rotation of detritus portion is more stable.

Optionally, a plurality of groups of cutting teeth are arranged on the rock breaking part along the circumferential direction of the rock breaking part, and the cutting teeth in each cutting tooth group are uniformly distributed along the axial direction of the cutting tooth group and are in a spiral shape along the distribution track.

Through adopting above-mentioned technical scheme, the pick in every group is the helix along the axial distribution and the distribution orbit of detritus portion, and the pick of every group cuts off the rock in proper order, can effectively reduce the cutting resistance.

Optionally, the cutting picks in adjacent sets are arranged at intervals in axial position.

Through adopting above-mentioned technical scheme, the pick cutting position of each group complements each other, promotes the detritus effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the cutting part with the larger rotating diameter can generate larger impact force under the condition that the angular speeds of the rollers are the same, meanwhile, the cutting part with the larger rotating diameter can be firstly contacted with the rock, so that the cutting part can cut the rock more easily, the root of the rock is separated from the rock main body through the cutting part, the rock part with the cut root can be crushed by the rock crushing part more easily, the rock breaking capacity of the rollers is improved, and hard rock and hard coal can be crushed more easily;

2. the cutting pick on the cutting part and the cutting pick on the rock crushing part are arranged alternately and distributed in a spiral track, the cutting pick at each position in the axial direction of the roller can not cut rock simultaneously, so that the cutting resistance is reduced, the rock breaking capacity of the cutting pick is stronger under the condition that the torque is constant, and after the roller rotates a circle, the cutting pick at each position in the axial direction can cut the rock, so that the rock breaking effect of the roller is guaranteed.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic top view of the structure of FIG. 1;

FIG. 3 is a schematic diagram of the working conditions of the embodiment of the present application.

Reference numerals: 1. a cut-off portion; 11. a first set of pick teeth; 12. a second pick group; 13. a third pick group; 2. a rock breaking portion; 3. a cutting pick.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses coal mining machine cylinder that adapts to cut hard rock and hard coal, refer to fig. 1 and fig. 2, including cutting unit and detritus portion 2, cutting unit and detritus portion 2 are the cylinder barrel, and wherein detritus portion 2 directly links to each other with the coal mining machine, all is fixed with pick 3 on the lateral wall all around of cutting unit and detritus portion 2.

Referring to fig. 2, a first cutting pick group 11, a second cutting pick group 12 and a third cutting pick group 13 are axially arranged on the cutting part along the cutting part, the cutting picks 3 of each group are the same in number and are uniformly distributed along the circumferential direction of the cutting part, wherein the cutting picks 3 of the first cutting pick group 11 and the third cutting pick group 13 are the same in axial position, and the cutting picks 3 of the first cutting pick group 11 and the cutting picks 3 of the second cutting pick group 12 are arranged at intervals in the circumferential direction of the cutting part.

Referring to fig. 2, a plurality of groups of cutting picks 3 are arranged on the rock breaking part 2 along the axial direction of the rock breaking part, the axial distances of the cutting picks 3 in each cutting pick group are the same, the cutting picks 3 in each cutting pick group are distributed along the axial direction of the rock breaking part 2 in a spiral track, and the cutting picks 3 in adjacent cutting pick groups are arranged at intervals in the axial direction of the rock breaking part 2.

Referring to fig. 3, when the shearer drum adapted to cut hard rock and hard coal disclosed in this embodiment is in use, the cutting teeth 3 on the cutting part first cut off the connecting part between the rock to be crushed and the rock stratum body, and then the rock crushing part 2 contacts with the rock with the broken root part to crush the rock in this area.

The embodiment of the application discloses a coal-winning machine cylinder's that adapts to cut hard rock and hard coal implementation principle does: through setting up the cylinder that cuts the portion 1 and constitute the coal-winning machine with garrulous rock portion 2, the great cutting unit of diameter of rotation, under the same condition of cylinder angular velocity, can produce bigger impact force, the great cutting unit of diameter of rotation simultaneously can earlier contact with the rock, and then the cutting unit can easier cut rock, through cutting unit with the root and the rock main part separation of rock, the broken root that garrulous rock portion 2 can be comparatively light is cut off the rock part, the broken rock ability of cylinder promotes, broken hard rock and hard coal that can be comparatively light.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a coal-winning machine cylinder that adaptation cut hard rock and hard coal which characterized in that: including truncation portion (1) and detritus portion (2), the rotation diameter of truncation portion (1) is greater than the rotation diameter of detritus portion (2).

2. The shearer drum of claim 1, adapted to cut hard rock and coal, wherein: cut portion (1) with the whole profile of detritus portion (2) is cylindrical barrel and both coaxial settings, the stack shell diameter of cutting portion (1) is greater than the stack shell diameter of detritus portion (2), cutting pick (3) of a plurality of cut rocks are all installed to the week side of cutting portion (1) and week side of detritus portion (2).

3. The shearer drum of claim 2, adapted to cut hard rock and coal, wherein: the cutting picks (3) on the cutting part (1) are uniformly distributed in a circular array along the circumferential direction of the cutting part (1).

4. The shearer drum of claim 3, adapted to cut hard rock and coal, wherein: the cutting teeth (3) are provided with a plurality of groups along the axial direction of the cutting part (1), and the cutting teeth (3) of each adjacent cutting tooth group are arranged alternately.

5. The shearer drum of claim 4, adapted to cut hard rock and coal, wherein: pick (3) on the part of cuting (1) are provided with three groups, and three group pick (3) are followed the axial of part of cuting (1) is first pick group (11), second pick group (12) and third pick group (13) in proper order, first pick group (11) with the circumferential position of pick (3) is the same in third pick group (13).

6. The shearer drum of claim 2, adapted to cut hard rock and coal, wherein: cutting teeth (3) on the rock breaking part (2) are uniformly distributed along the circumferential direction of the rock breaking part (2).

7. The shearer drum of claim 6, adapted to cut hard rock and coal, wherein: the rock breaking part (2) is provided with a plurality of groups of cutting teeth (3) along the circumferential direction, and the cutting teeth (3) in each cutting tooth group are uniformly distributed along the axial direction of the cutting tooth group and are in a spiral line shape along the distribution track.

8. The shearer drum of claim 7, adapted to cut hard rock and coal, wherein: the cutting picks (3) in adjacent cutting pick groups are arranged at intervals in the axial direction.