阅读说明：本技术 采煤机滚筒的刀具装置及其防松方法 (Cutter device of coal mining machine roller and anti-loosening method thereof ) 是由 马子尧 周常飞 黄秋来 郭岱 恩建峰 曾苛 徐常中 黄振中 刘翰林 陶高群 韩峰 于 2021-10-25 设计创作，主要内容包括：本发明公开了一种采煤机滚筒的刀具装置,其包括截齿、齿套、齿座以及螺母,所述齿套套装于所述截齿外侧,所述齿座套装于所述齿套外侧,所述齿座的一端通过设置于所述齿套的台阶限位,另一端通过螺纹连接于所述齿套的所述螺母限位,所述螺母的侧壁上设置有螺钉,所述螺钉的末端旋入至所述齿套中。此外,本发明亦公开了一种采煤机滚筒的刀具装置的防松方法。本发明的刀具装置及防松方法,能够避免齿套在齿座轴向窜动,增加了齿座的使用寿命。(The invention discloses a cutter device of a coal mining machine roller, which comprises a cutting tooth, a tooth sleeve, a tooth holder and a nut, wherein the tooth sleeve is sleeved on the outer side of the cutting tooth, the tooth holder is sleeved on the outer side of the tooth sleeve, one end of the tooth holder is limited by a step arranged on the tooth sleeve, the other end of the tooth holder is limited by the nut connected to the tooth sleeve through threads, a screw is arranged on the side wall of the nut, and the tail end of the screw is screwed into the tooth sleeve. In addition, the invention also discloses a method for preventing the cutter device of the coal mining machine roller from loosening. The cutter device and the anti-loosening method can avoid axial movement of the tooth sleeve on the tooth holder, and prolong the service life of the tooth holder.)

1. The cutter device of the coal mining machine roller is characterized by comprising a cutting tooth, a tooth sleeve, a tooth holder and a nut, wherein the tooth sleeve is sleeved on the outer side of the cutting tooth, the tooth holder is sleeved on the outer side of the tooth sleeve, one end of the tooth holder is limited by a step arranged on the tooth sleeve, the other end of the tooth holder is limited by the nut in threaded connection with the tooth sleeve, a screw is arranged on the side wall of the nut, and the tail end of the screw is screwed into the tooth sleeve.

2. The cutter device of a shearer drum according to claim 1, wherein the number of the screws is plural.

3. The cutter device of a shearer drum according to claim 1, wherein the nut is ring-shaped.

4. The cutter device of a shearer drum according to claim 3, wherein the nut is provided with a plurality of threaded holes along a circumferential direction, each of the threaded holes being penetrated by the screw.

5. The cutter device of a shearer drum according to claim 4, wherein the plurality of threaded holes are evenly distributed in a circumferential direction of the nut.

6. The cutter device of a shearer drum according to claim 3, wherein the nut is further provided with a plurality of round holes along a circumferential direction.

7. The cutter device of a shearer drum according to claim 6, wherein the plurality of circular holes are evenly distributed in a circumferential direction of the nut.

8. A method of loosening prevention of a cutter device of a shearer drum, which is carried out using the cutter device of a shearer drum according to any one of claims 1 to 7, the method comprising mounting the block on the pick, mounting the block on the block and positioning it by the step, screwing the nut to a distal end of the block to restrain the block, and screwing the screw into the nut and the block.

Technical Field

The invention relates to the field of coal mining machines, in particular to a cutter device of a coal mining machine roller and a corresponding anti-loosening method.

Background

As shown in fig. 4, the cutter device of the shearer drum in the related art is composed of a block 30, a sleeve 20, and a cutting pick 10. The tooth holder 30 is welded on the roller body, and the tooth sleeve 20 is used for protecting the tooth holder 30 and prolonging the service life of the roller. The sleeve 20 is mounted on the carrier 30 and is positioned on the carrier 30 by means of a shaft retainer 40. In the actual use process, because the shaft retainer ring 40 and the gear sleeve 20 have allowance in the axial direction, the gear sleeve 20 can generate axial movement, the inner hole of the gear seat 30 is easily abraded, the inner hole of the gear seat 30 is out of tolerance, and the service life of the roller gear seat 30 is shortened; on the other hand, the shaft retainer 40 has an elastic structure, and when the sleeve gear 20 receives an external irregular impact force, the shaft retainer 40 may be broken out of the groove, so that the sleeve gear 20 may be thrown out without axial positioning capability, and the ring gear 30 may be directly worn.

In view of the above, there is a need for a new tooth socket fixing device to solve the problems in the prior art.

Disclosure of Invention

The invention aims to solve the technical problem that the defects in the prior art are overcome, and the cutter device of the coal mining machine roller can avoid circumferential movement of the gear sleeve, so that the gear seat is prevented from being damaged.

In order to solve the technical problems, the invention adopts the technical scheme that: the cutter device of the coal mining machine roller comprises a cutting tooth, a tooth sleeve, a tooth holder and a nut, wherein the tooth sleeve is sleeved on the outer side of the cutting tooth, the tooth holder is sleeved on the outer side of the tooth sleeve, one end of the tooth holder is limited by a step arranged on the tooth sleeve, the other end of the tooth holder is connected with the nut of the tooth sleeve in a limiting manner through threads, a screw is arranged on the side wall of the nut, and the tail end of the screw is screwed into the tooth sleeve.

Preferably, the number of the screws is plural.

Preferably, the nut is ring-shaped.

Preferably, the nut is provided with a plurality of threaded holes along the circumferential direction, and each threaded hole is penetrated with the screw.

Preferably, the plurality of threaded holes are evenly distributed in the circumferential direction of the nut.

Preferably, the nut is further provided with a plurality of round holes along the circumferential direction.

Preferably, a plurality of the circular holes are evenly distributed in the circumferential direction of the nut.

In addition, the invention also discloses a method for preventing the loosening of the cutter device of the coal mining machine roller, which is realized by adopting the cutter device of the coal mining machine roller as described in any one of the preceding claims, and the method comprises the steps of installing the tooth sleeve on the cutting pick, installing the tooth holder on the tooth sleeve and positioning through the step, connecting the nut to the tail end of the tooth sleeve in a threaded mode to limit the tooth holder, and screwing the screw into the nut and the tooth sleeve.

The cutter device of the coal mining machine roller and the anti-loosening method thereof have the following beneficial effects: adopt the nut to connect toothholder and tooth cover, set up the screw that penetrates to the toothholder in the circumference of nut, the screw can avoid the nut to become loose at the working process, consequently, can avoid the toothholder at the axial float to avoid damaging the toothholder, increased the life of toothholder. In addition, adopt the screw fastening, compare in traditional retaining ring, can carry out the dismouting more conveniently.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a cross-sectional view of a cutter device of a shearer drum of the present invention;

FIG. 2 is a perspective view of the nut of FIG. 1;

FIG. 3 is a front view of FIG. 2;

fig. 4 is a cross-sectional view of a cutter device of a shearer drum of the related art.

In the figure, the position of the upper end of the main shaft,

1-cutting pick; 2-gear sleeve; 3-a tooth holder; 4-a nut; 5-a screw; 6-a threaded hole; 7-a circular hole; 10-cutting pick; 20-gear sleeve; 30-a tooth holder; 40-a shaft retainer ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1, the cutter device for a shearer drum according to the present invention includes a cutting pick 1, a sleeve 2, a block 3, and a nut 4.

As shown in figure 1, a tooth sleeve 2 is sleeved outside a cutting pick 1, and a tooth holder 3 is sleeved outside the tooth sleeve 2. Be provided with the step on the tooth cover 2, the one end of toothholder 3 is spacing through setting up in the step of tooth cover 2, and it is spacing that threaded connection is passed through in the nut 4 of tooth cover 2 to the other end of toothholder 3, and the screw thread is seted up to the tail position of tooth cover 2 promptly, and nut 4 revolves on tooth cover 2, can carry on spacingly to toothholder 3 to prevent that tooth cover 2 from leading to the 3 hole grow of toothholder at the axial float. Be provided with screw 5 on the lateral wall of nut 4, the terminal screw in of screw 5 is to the tooth cover 2 in, and this kind of mode of setting can avoid nut 4 not hard up, guarantees that nut 4 connects well all the time on tooth cover 2. The mode of the nut 4 is convenient to disassemble and assemble.

In the present invention, the number of the screws 5 can be selected as one or more, preferably more, according to the requirement, so as to better avoid the loosening of the nut 4.

Referring to fig. 2 and 3, in the present invention, the nut 4 is annular.

As shown in fig. 2 and 3, in the present embodiment, the nut 4 is provided with a plurality of threaded holes 6 along the circumferential direction, and each threaded hole 6 is penetrated by a screw 5, so that the nut 4 can be prevented from loosening at a plurality of positions in the circumferential direction of the nut 4. Preferably, the threaded holes 6 are evenly distributed in the circumferential direction of the nut 4, so as to facilitate the uniform application of force.

In addition, in order to facilitate the detachment and installation of the nut 4, the nut 4 is further provided with a plurality of circular holes 7 along the circumferential direction, so that a wrench and the like can be conveniently embedded, and the nut 4 can be conveniently detached and installed. Preferably, the plurality of circular holes 7 are evenly distributed in the circumferential direction of the nut 4.

The invention also discloses an anti-loosening method of the cutter device of the coal mining machine roller, which is realized by adopting the cutter device of the coal mining machine roller, and the anti-loosening method comprises the steps of installing the tooth sleeve 2 on the cutting pick 1, installing the tooth holder 3 on the tooth sleeve 2 and positioning through steps, connecting the nut 4 to the tail end of the tooth sleeve 2 in a threaded manner to limit the tooth holder 3, and screwing the screw 5 into the nut 4 and the tooth sleeve 2.

The cutter device and the anti-loosening method can effectively avoid the axial movement of the gear sleeve 2, avoid the expansion of the inner hole of the gear seat 3 caused by the axial movement, and prolong the service life of the gear seat 3. Adopt screw 5 locking, can stop the phenomenon that the retaining ring that exists among the prior art bounces, provide the reliability of cylinder. In addition, the structure adopts thread fastening, and is more convenient to disassemble and assemble compared with a check ring mode.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.