CN106640067A

CN106640067A - Coal cutter helical drum for cutting parting coal rock

Info

Publication number: CN106640067A
Application number: CN201710164659.4A
Authority: CN
Inventors: 赵丽娟; 田震; 史百胜; 刘旭南; 张美晨; 周文潮; 闻首杰
Original assignee: Liaoning Technical University
Current assignee: Liaoning Technical University
Priority date: 2017-03-20
Filing date: 2017-03-20
Publication date: 2017-05-10
Anticipated expiration: 2037-03-20
Also published as: CN106640067B

Abstract

The invention provides a coal cutter helical drum for cutting parting coal rock. The coal cutter helical drum comprises a drum body, a drum hub welded in the drum body and an end disc welded at one end outside the drum body, the inner drum wall of the drum body is of a cylindrical surface structure while the outer drum wall of the same is of a conical surface structure, diameter of the drum body close to the the end disc is large while the diameter of the drum body close to a goaf side is small, and a helix-angle-variable helical blade is welded on the drum body and provided with knife-shaped cutting teeth and pickax-shaped cutting teeth which are in alternate arrangement along the helical direction; pickax-shaped cutting teeth are arranged on the end disc. The knife-shaped cutting teeth and the pickax-shaped cutting teeth are alternately arranged, and the knife-shaped cutting teeth perform shear-type cutting on a coal wall, and the pickax-shaped cutting teeth perform extrusion-type smashing on the coal wall. Through the arrangement mode, the characteristic that the coal rock is low in tension resistance can be fully utilized, so that coal rock breaking capability of the helical drum is improved greatly; the outer-diameter-variable drum body is adopted to mutually cooperate with the helix-angle-variable helical blade, so that coal loading efficiency of the helical drum can be greatly improved.

Description

A kind of Shearer Helical Drum for cut dirt band coal petrography

Technical field：

The present invention relates to a kind of Shearer Helical Drum, is particularly suited under complicated occurrence condition rich in dirt band and hard bag Wrap up in the exploitation of the girdle of body.

Background technology：

Drum shearer has stronger adaptability to coal seam conditions, and can significant increase coal production machine after three machines are supporting Tool and automaticity, while coal production ability, production efficiency also can be improved significantly so that its bog-head coal in China Range of application is wider in layer mechanical mining.Helix drum is the critical component of coal-winning machine, improves the cutting capacity of helix drum It is significant for improving China's girdle mechanization production degree, realizing the high-yield and high-efficiency that China's coal-mine is exploited.It is existing The supporting helix drum of some coal-winning machines is in the complicated coal seam of cut occurrence condition especially rich in dirt band and hard parcel During coal seam, Cutting Performance and loading performance are poor, and when dirt band and hard parcel is contained in coal seam, helix drum cannot be to upper Effective cut in coal seam is stated, pick stress is larger, easily loses the situation of tooth or broken teeth；Meanwhile, coal, the rock mass after crushing Can not effectively be shipped on drag conveyor in the presence of helical blade, effect of loading coal is undesirable.

The content of the invention：

For the defect of prior art, the present invention provides that a kind of Cutting Performance is good, loading efficiency is high for cut dirt band The Shearer Helical Drum of coal petrography.

The present invention is adopted the following technical scheme that：A kind of Shearer Helical Drum for cut dirt band coal petrography is provided, including Cylinder, the cylinder hub being welded in cylinder and the end plate of cylinder outside one end is welded on, the inner tube wall of the cylinder is face of cylinder knot Structure, outer tube wall are part pyramid like configuration, and close end plate side diameter is big, mined out side diameter is little, and change lead angle spiral is welded with thereon Blade, the change lead angle helical blade is provided with the knife shape cutter teeth and pick-shaped cutter being alternately arranged along the hand of spiral；The end Disk is provided with multiple pick-shaped cutters that established angle is 45 °.

The span of the semi-cone angle that the outer tube wall is formed is 2 °～4 °.

It is described become lead angle helical blade near end plate side head near mined out side afterbody lead angle by Cumulative big, its excursion is 10 °～16 °.

The pick-shaped cutter of the end plate is 10, and five transversals are defined on the end plate, is followed successively by end plate thickness side Upwards from end plate outward flange to the first transversal of end plate inward flange, the second transversal, the 3rd transversal, the 4th transversal and the 5th transversal, There are 4 pick-shaped cutters on first transversal, respectively there are 2 pick-shaped cutters on second transversal and the 3rd transversal, it is described Respectively there is 1 pick-shaped cutter on 4th transversal and the 5th transversal, pick type cuts from first transversal to the 5th transversal The angle of inclination of tooth is gradually lowered, and by 15 ° 5 ° are gradually decrease to.

The afterbody for becoming lead angle helical blade is welded with wear-resistant block.

As shown from the above technical solution, the present invention compared with prior art, has the advantage that：

(1) the change lead angle helical blade is provided with the knife shape cutter teeth and pick-shaped cutter being alternately arranged along the hand of spiral, Wherein knife shape cutter teeth realizes that squash type is crushed to the shearing cut of rib, pick-shaped cutter to rib, and this kind of arrangement mode can be fully Using the less feature of coal petrography resistance to tension, the broken coal petrography ability of helix drum is greatly improved, especially cut is rich in dirt band With the ability in hard parcel coal seam；

(2) cylinder can be prevented effectively from the coal petrography after crushing in cylinder and change spiral shell using the pyramidal structure of variable diameters Rotation lift angle helical blade envelope is piled up in region, accelerates the outflow of coal petrography block；Simultaneously the change lead angle helical blade is from leaning on The head of proximal disk side to the lead angle of the afterbody near mined out side gradually increases in the range of 10 °～16 °, further increase The flowing space of the mined out side of helix drum, is cooperated using variable diameters cylinder with the helical blade for becoming lead angle, Neng Gouji The earth improves the loading efficiency of helix drum；Wherein described cylinder is circle using the inner tube wall of integrated pyramidal structure, i.e. cylinder Cylindrical structure, outer tube wall are part pyramid like configuration, and the span of the semi-cone angle that the outer tube wall is formed is 2 °～4 °, can be avoided Coal petrography block flow region after end plate side is broken caused by angle is excessive diminish and helix drum unbalance stress phenomenon, effectively Improve the ability of coalingging of helix drum, it is ensured that stress balance of the helix drum in cutting course, meanwhile, small-angle one Change easy to process, the low manufacture cost of cylinder, structural strength is high.

Description of the drawings：

Fig. 1 is the overall structure figure of the Shearer Helical Drum for cut dirt band coal petrography provided in an embodiment of the present invention；

Fig. 2 is the axial sectional view of the Shearer Helical Drum for cut dirt band coal petrography as shown in Figure 1；

Fig. 3 is knife shape cutter teeth and pick-shaped cutter in the Shearer Helical Drum for cut dirt band coal petrography as shown in Figure 1 Position expanded schematic diagram；

Fig. 4 is change lead angle helical blade in the Shearer Helical Drum for cut dirt band coal petrography as shown in Figure 1 Structural representation.

Specific embodiment：

With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Hereinafter implement Example is not limited to the scope of the present invention for illustrating the present invention.

As depicted in figs. 1 and 2, a kind of Shearer Helical Drum for cut dirt band coal petrography disclosed by the invention, including Cylinder 1, the cylinder hub 2 being welded in cylinder 1 and the end plate 3 of the outside one end of cylinder 1 is welded on, the inner tube wall of the cylinder 1 is circle Cylindrical structure, outer tube wall are part pyramid like configuration, and close end plate side overall diameter is big, mined out side diameter is little, and two change is welded with thereon Lead angle helical blade 4, as shown in figure 3, per pick number for becoming lead angle helical blade 4 is into 7, thereon including blade type Pick 5 and pick-shaped cutter 6, and the knife shape cutter teeth 5 and the pick-shaped cutter 6 replace successively row with sequential along the hand of spiral Row, to realize the arrangement mode of the tooth of one line of two blade two；The lead angle helical blade 4 that becomes is from the head near end plate side Lead angle to the afterbody near mined out side gradually increases, and its excursion is 10 °～16 °, specifically, as shown in figure 4, institute State change lead angle helical blade and be divided into two sections, the first paragraph I of the end plate side is proximate to respectively and near the second of mined out side Section II, the lead angle α excursion in the first paragraph I is 10 °～13 °, the lead angle β change in the second segment II Scope is 13 °～16 °；The afterbody for becoming lead angle helical blade 4 is welded with wear-resistant block 7, can improve the resistance to deformation of blade Ability.

As shown in figures 1 and 3, the pick-shaped cutter 6 of the end plate 3 is 10, and established angle is 45 °, on the end plate 3 Define five transversals, be followed successively by end plate thickness direction the first transversal A from end plate outward flange to end plate inward flange, second section Line B, the 3rd transversal C, the 4th transversal D and the 5th transversal E, there is 4 pick-shaped cutters 6, second transversal on the first transversal A Respectively there are 2 pick-shaped cutters 6 on B and the 3rd transversal C, respectively have 1 pick-shaped cutter 6 on the 4th transversal D and the 5th transversal E, from The angle of inclination of pick-shaped cutter 6 is gradually lowered on the first transversal A to the 5th transversal E, and by 15 ° 5 ° are gradually decrease to.

Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used To modify to the technical scheme described in previous embodiment, either which part or all technical characteristic are equal to Replace；And these modifications or replacement, the model for being limited the essence disengaging the claims in the present invention of appropriate technical solution Enclose.

Claims

1. a kind of Shearer Helical Drum for cut dirt band coal petrography, it is characterised in that include：Cylinder, it is welded in cylinder Cylinder hub and be welded on the end plate of cylinder outside one end, it is taper seat that the inner tube wall of the cylinder is cylindrical surface structure, outer tube wall Structure, close end plate side diameter is big, mined out side diameter is little, and change lead angle helical blade, the change spiral liter are welded with thereon Angle helical blade is provided with the knife shape cutter teeth and pick-shaped cutter being alternately arranged along the hand of spiral；The end plate is provided with established angle and is 45 ° of multiple pick-shaped cutters.

2. the Shearer Helical Drum for cut dirt band coal petrography according to claim 1, it is characterised in that：The outer tube The span of the semi-cone angle that wall is formed is 2 °～4 °.

3. the Shearer Helical Drum for cut dirt band coal petrography according to claim 1, it is characterised in that：The change spiral shell Rotation lift angle helical blade gradually increases from the head near end plate side to the afterbody lead angle near mined out side, its excursion For 10 °～16 °.

4. the Shearer Helical Drum for cut dirt band coal petrography according to claim 1, it is characterised in that：The end plate Pick-shaped cutter be 10, on the end plate define five transversals, be followed successively by end plate thickness direction from end plate outward flange The first transversal, the second transversal, the 3rd transversal, the 4th transversal and the 5th transversal to end plate inward flange, has 4 on first transversal Respectively there are 2 pick-shaped cutters, the 4th transversal and the described 5th on individual pick-shaped cutter, second transversal and the 3rd transversal Respectively there is 1 pick-shaped cutter on transversal, the angle of inclination of pick-shaped cutter gradually drops from first transversal to the 5th transversal It is low, it is gradually decrease to 5 ° by 15 °.

5. the Shearer Helical Drum for cut dirt band coal petrography according to claim 1, it is characterised in that：The change spiral shell The afterbody of rotation lift angle helical blade is welded with wear-resistant block.