A shearer with mixed pick

Abstract

The application discloses a coal cutter spiral drum with mixed picks, which comprises a drum body, spiral blades formed on the drum body, and end discs corresponding to the spiral blades, a plurality of cutter-type pick mechanisms arranged on the spiral blades, and a plurality of pick-type pick mechanisms arranged on the end discs. The coal cutter spiral drum can improve loading effect and reduce coal loss rate under the premise of ensuring drum cutting performance.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of spiral drum of coal mining machine, and particularly relates to a spiral drum of coal mining machine with mixed picks. BACKGROUND

[0002] Under the background of coal mine mechanization production, the cutting effect and the coal loading effect become the basic requirements of the drum of coal mining machine. The conventional drum of coal mining machine separately adopts pick type teeth or knife type teeth, and the cutting effect and the coal loading effect cannot be considered. In order to ensure the cutting performance of the drum, the pick type tooth drum sacrifices the loading effect, and the scattered coal is not easy to be recovered, which increases the coal loss rate and causes the waste of energy. The knife type tooth drum can ensure the coal loading effect, but when the working face appears hard coal, gangue, more faults and the like, the spiral drum of coal mining machine often cannot cut, or cuts slowly, or the drum is seriously worn and the service life is reduced. SUMMARY

[0003] In view of the above technical deficiencies, the purpose of the present application is to provide a spiral drum of coal mining machine with mixed picks, which can improve the loading effect and reduce the coal loss rate under the premise of ensuring the cutting performance of the drum.

[0004] To solve the above technical problems, the present application adopts the following technical scheme:

[0005] The present application provides a spiral drum of coal mining machine with mixed picks, which comprises a drum body, a spiral blade formed on the drum body, an end disc corresponding to the spiral blade, a plurality of knife type pick tooth cutting mechanisms arranged on the spiral blade, and a plurality of pick type pick tooth cutting mechanisms arranged on the end disc.

[0006] Preferably, a connecting disc is arranged in the drum body, and a cover plate is arranged on one end of the drum body close to the end disc.

[0007] Preferably, the knife type pick tooth cutting mechanism comprises a pick tooth seat I welded with the spiral blade, and a knife type pick tooth installed on the pick tooth seat I; the pick type pick tooth cutting mechanism comprises a pick tooth seat II welded with the end disc, and a pick type pick tooth installed on the pick tooth seat II.

[0008] Preferably, the arrangement of the knife type pick tooth and the pick type pick tooth is in the same direction.

[0009] The present application also provides a spiral drum of coal mining machine with mixed picks, which comprises a drum body, a spiral blade formed on the drum body, an end disc corresponding to the spiral blade, a pick type pick tooth cutting mechanism II installed on the spiral blade, and a pick type pick tooth cutting mechanism III installed on the end disc, wherein the pick type pick tooth II on the pick type pick tooth cutting mechanism II is thinner than the pick type pick tooth III on the pick type pick tooth cutting mechanism III.

[0010] Preferably, the tooth head diameter of the pick tooth two is three fourths of the tooth head diameter of the pick tooth three.

[0011] The present application has the advantages of:

[0012] The blade type pick tooth or the slender pick tooth on the spiral blade can improve the coal block rate and the loading effect, the pick tooth on the end disc has high strength, can improve the cutting effect, can improve the loading effect and reduce the coal loss rate under the premise of ensuring the cutting performance of the drum. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0014] Fig. 1 It is a cross-sectional structure schematic diagram of the embodiment 1 of the present application;

[0015] Fig. 2 It is a pick tooth cutting mechanism arrangement schematic diagram on the end disc of the embodiment 1 of the present application;

[0016] Fig. 3 It is a cross-sectional structure schematic diagram of the embodiment 2 of the present application.

[0017] Explanation of reference signs:

[0018] 1, cylinder body; 2, spiral blade; 3, end disc; 4, blade type tooth cutting mechanism; 401, cutting tooth seat one; 402, blade type pick tooth; 5, pick tooth cutting mechanism; 501, cutting tooth seat two; 502, pick tooth; 6, connecting disc; 7, cover plate; 701, cover plate flange; 8, pick tooth cutting mechanism two; 801, pick tooth two; 9, pick tooth cutting mechanism three; 901, pick tooth three. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] Embodiment 1:

[0021] As Figs. 1-2As shown, this embodiment provides a coal mining machine spiral drum with mixed cutting teeth, including a drum body 1. Spiral blades 2 and end plates 3 corresponding to the spiral blades 2 are formed on the drum body 1. A plurality of blade-shaped cutting tooth mechanisms 4 are provided on the spiral blades 2, and a plurality of pick-shaped cutting tooth mechanisms 5 are provided on the end plates 3. A connecting plate 6 is provided inside the drum body 1, and a cover plate 7 is provided at one end of the drum body 1 near the end plates 3. The cover plate 7 is fastened to a cover plate flange 701 welded inside the drum body 1 by bolts. The blade-shaped cutting tooth mechanism 4 includes a first cutting tooth seat 401 welded to the spiral blades 2, on which blade-shaped cutting teeth 402 are installed. The pick-shaped cutting tooth mechanism 5 includes a second cutting tooth seat 501 welded to the end plates 3, on which pick-shaped cutting teeth 502 are installed. The blade-shaped cutting teeth 402 and the pick-shaped cutting teeth 502 are arranged in the same direction of rotation.

[0022] In this embodiment, the cylinder body 1, spiral blade 2, end plate 3, cutting tooth seat 1 401, blade-shaped cutting tooth 402, cutting tooth seat 2 501, pick-shaped cutting tooth 502, connecting plate 6, cover plate 7, and cover plate flange 701 adopt existing products and structures known to those skilled in the art, and the connection methods between them adopt existing connection methods known to those skilled in the art, which will not be described in detail here.

[0023] In practical use, the high-strength pick-shaped cutting teeth on the end plate are used to improve the cutting effect, while the knife-shaped cutting teeth on the spiral blades can improve the coal lump rate and enhance the loading effect. Under the premise of ensuring the cutting performance of the drum, the loading effect can be improved and the coal loss rate can be reduced.

[0024] Example 2:

[0025] like Fig. 3 As shown, the difference between this example and Embodiment 1 is that: a coal mining machine spiral drum with mixed cutting teeth includes a cylinder body 1, on which spiral blades 2 and end plates 3 corresponding to the spiral blades 2 are formed, a pick-type tooth cutting mechanism 2 8 is installed on the spiral blades 2, and a pick-type tooth cutting mechanism 3 9 is installed on the end plates 3; the tooth diameter of the pick-type cutting tooth 2 801 is three-quarters of the tooth diameter of the pick-type cutting tooth 3 901.

[0026] In this example, the cylinder body 1, the spiral blade 2, the end plate 3, the pick-type tooth cutting mechanism 2 8, the pick-type tooth cutting mechanism 3 9, the pick-type cutting tooth 2 801, and the pick-type cutting tooth 3 901 adopt existing products or structures well known to those skilled in the art, and the connection methods between the various structures also adopt existing connection methods well known to those skilled in the art, which will not be described in detail here.

[0027] In specific use, the pick-shaped cutting tooth three 901 on the end disc has high strength, which is used to improve the cutting effect, and the fine pick-shaped cutting tooth two 801 on the spiral blade can improve the coal block rate and improve the loading effect, which can improve the loading effect and reduce the coal loss rate under the premise of ensuring the cutting performance of the roller.

[0028] Obviously, various modifications and changes can be made to the present application by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that the present application embrace all such modifications and changes as fall within the scope of the claims and their equivalents.

Claims

1. A shearer drum with hybrid picks, characterized by: The utility model relates to a coal mine rotary drum shearer, including cylinder body (1), form on the cylinder body (1) with helical blade (2), corresponding end disc (3) of helical blade (2), install pick type tooth cutting tooth mechanism two (8) on helical blade (2), install pick type tooth cutting tooth mechanism three (9) on end disc (3), pick type cutting tooth two (801) on pick type tooth cutting tooth mechanism two (8) is slender than pick type cutting tooth three (901) on pick type tooth cutting tooth mechanism three (9), the tooth head diameter of pick type cutting tooth two (801) is three fourths of the tooth head diameter of pick type cutting tooth three (901), the arrangement of pick type cutting tooth two (801) and pick type tooth cutting tooth mechanism three (9) is same in the same way, the one end of cylinder body (1) is close to end disc (3) and is provided with cover plate (7), cover plate 7 and the cover plate flange (701) of welding in cylinder body (1) are fastened with bolt, with the corresponding connecting disc (6), to close cylinder body (1), the strength of pick type cutting tooth three (901) on end disc can improve cutting effect, the slender pick type cutting tooth two (801) on helical blade can improve coal block rate, promote loading effect, can improve loading effect under the premise of guaranteeing rotary drum cutting performance, reduce coal loss rate.

2. A shearer drum with hybrid picks as claimed in claim 1 wherein: The helical blade (2) and the end disc (3) are provided with cutting tooth seats.

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