Crushing device suitable for thin seam mining machine

Abstract

The utility model discloses a crushing device suitable for a thin seam coal mining machine, and belongs to the technical field of coal mining equipment. A crushing device suitable for a thin seam mining machine is used for being installed above a coal passing channel of the thin seam mining machine and comprises long-strip-shaped crushing teeth. A non-right-angle included angle is formed between the length direction of the crushing teeth and the coal conveying direction of the coal passing channel, and the crushing teeth face the coal passing channel. The long-strip-shaped crushing teeth are adopted, the crushing teeth and the coal passing channel are obliquely installed in a non-right-angle mode, lump coal or gangue conveyed on the coal passing channel can smoothly enter the crushing device, the contact area between the long-strip-shaped crushing teeth and the lump coal or gangue can be increased through the long-strip-shaped crushing teeth, and the crushing effect is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining equipment technology, and in particular to a crushing device suitable for thin coal seam mining machines. Background Technology

[0002] Existing coal mining machines typically have crushing devices equipped with crushing motors, reduction gears, and other power units, which are bulky. However, thin coal seam mining machines have thinner bodies and are limited by installation space and coal passage space. Using a power crushing device in such a limited space results in insufficient crushing power, low reliability, and a high failure rate.

[0003] To address this issue, existing publicly available document CN114798119B discloses a crushing device for a thin coal seam mining machine. By eliminating the need for a crushing motor, reduction gear, and other power devices, the size of the crushing device is significantly reduced, making it suitable for installation on the thin body of a thin coal seam mining machine. However, in actual use, it has been found that large pieces of coal or gangue mostly accumulate above the scraper conveyor and in the coal passage near the lower edge of the machine body. When the mining machine using the aforementioned crushing device is performing crushing operations, on the one hand, large pieces of coal or gangue often leak out; on the other hand, the crushing effect is poor, and it is unable to effectively crush large pieces of coal or gangue. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a crushing device suitable for thin coal seam mining machines, which can meet the installation requirements of thin coal seam mining machines and has a good crushing effect.

[0005] The purpose of this utility model is achieved as follows:

[0006] A crushing device suitable for thin coal seam mining machines is used to be installed above the coal passage of the thin coal seam mining machine, including elongated crushing teeth; the length direction of the crushing teeth forms a non-right angle with the coal conveying direction of the coal passage, and the crushing teeth face the coal passage.

[0007] This also includes baffles;

[0008] The baffle is used to be installed at one end of the crushing device near the outside of the thin coal seam mining machine, and the baffle is inclined downward in that direction.

[0009] It also includes a tooth mounting plate, and there are multiple crushing teeth. The multiple crushing teeth are evenly distributed and mounted on the tooth mounting plate, and the crushing teeth protrude from the tooth mounting plate.

[0010] The baffle is installed above the tooth mounting plate.

[0011] It also includes a mounting base, and the toothed mounting plate is connected to the mounting base;

[0012] The crushing device is mounted on the thin coal seam mining machine via the mounting base.

[0013] The baffle is connected to the mounting base and is located above the tooth mounting plate.

[0014] The tooth mounting plate and the mounting base are connected by a connecting plate.

[0015] The included angle is between 30 degrees and 60 degrees.

[0016] The envelope of the baffle near the outer side of the thin coal seam mining machine is mapped to the outer side of the coal passage along a path perpendicular to the coal passage.

[0017] The crushing teeth move closer and closer to the coal passage along the coal conveying direction.

[0018] The beneficial effects of this utility model are as follows: by adopting long strip-shaped crushing teeth and installing the crushing teeth at an incline that is not at a right angle to the coal passage, the lump coal or gangue transported on the coal passage can smoothly enter the crushing device, and the long strip-shaped crushing teeth can increase the contact area with the lump coal or gangue, greatly improving the crushing effect. Attached Figure Description

[0019] Figure 1 This diagram shows a structural diagram of an embodiment of the crushing device of the present invention applicable to a thin coal seam mining machine;

[0020] Figure 2 This diagram shows a three-dimensional structural view of the crushing device of the present invention, which is installed on a thin coal seam mining machine.

[0021] Figure 3 It shows Figure 2 The front view;

[0022] Figure 4 It shows Figure 2 Top view;

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Thin coal seam mining machine;

[0025] 2- Crushing device;

[0026] 21-Break tooth;

[0027] 22-Baffle;

[0028] 23-Tooth mounting plate;

[0029] 24 - Mounting base;

[0030] 25 - Connecting plate;

[0031] 3-Coal passage. Detailed Implementation

[0032] Various embodiments of this utility model will be described with reference to the accompanying drawings. In the specification and drawings, elements with similar structures or functions will be represented by the same element symbols. It is understood that the drawings are for reference and illustration only and are not intended to limit the scope of this utility model. The dimensions shown in the drawings are merely for clarity of description and do not limit the proportional relationships or provide an exhaustive description of the utility model, nor do they limit the scope of this utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] This utility model proposes a crushing device suitable for thin coal seam mining machines.

[0035] In one embodiment, such as Figure 1 The diagram shows the structure of the crushing device 2 suitable for a thin coal seam mining machine. See also... Figures 2-4 As shown, the structure of a thin coal seam mining machine 1 equipped with a crushing device 2 is illustrated.

[0036] like Figure 1-4 As shown, a crushing device 2 is installed above the coal passage 3 of the thin coal seam mining machine 1. Specifically, the crushing device 2 has elongated crushing teeth 21 and a baffle 22. When the crushing device 2 is installed on the thin coal seam mining machine 1, the length direction of the crushing teeth 21 forms a non-right angle with the coal conveying direction of the coal passage 3, preferably between 30 and 60 degrees, and the crushing teeth 21 face the coal passage 3. The baffle 22 is installed at one end of the crushing device 2 near the outer side of the thin coal seam mining machine 1, and the baffle 22 is inclined downward in that direction.

[0037] In this embodiment, by using elongated crushing teeth 21 and setting the crushing teeth 21 to be installed at an incline that is not at a right angle to the coal passage 3, it is equivalent to the crushing device 2 having a large opening, which allows the lump coal or gangue transported on the coal passage 3 to smoothly enter the crushing device 2 along the inclined direction. Compared with the previous crushing cutting teeth, the elongated crushing teeth 21 can increase the contact area with lump coal or gangue, thus greatly improving the crushing effect. Moreover, the elongated crushing teeth 21 are simpler to manufacture.

[0038] In addition, in response to the problem of large coal or gangue leaking out due to obstructed passage during on-site operations, a baffle 22 is provided on the outer side in this embodiment to assist in coal collection and concentrate large coal or gangue in the coal passage 3 at the lower edge of the bottom of the thin coal seam mining machine 1, which can effectively prevent the leakage of large coal or gangue.

[0039] More specifically, the crushing device 2 includes multiple crushing teeth 21, a baffle 22, a tooth mounting plate 23, a mounting base 24, and a connecting plate 25.

[0040] Multiple crushing teeth 21 are evenly distributed and mounted on the tooth mounting plate 23, with each crushing tooth 21 protruding from the tooth mounting plate 23. The crushing teeth 21 and the tooth mounting plate 23 can be integrally formed, or they can be manufactured separately and then the crushing teeth 21 are mounted to the tooth mounting plate 23 via connectors.

[0041] The tooth mounting plate 23 and the baffle 22 are respectively connected to the mounting base 24, with the baffle 22 located above the tooth mounting plate 23. The crushing device 2 is mounted on the thin coal seam mining machine 1 via the mounting base 24.

[0042] Furthermore, to ensure that the crushing tooth 21 forms a non-right angle with the coal conveying direction of the coal passage 3, the tooth mounting plate 23 and the mounting base 24 are connected by a connecting plate 25. The connecting plate 25 is triangular in shape, with one tip facing the coal passage 3, thus forming an angle between the tooth mounting plate 23 and the mounting base 24. The crushing tooth 21 moves closer and closer to the coal passage 3 along its coal conveying direction. Specifically, the angle is controlled between 30 degrees and 60 degrees.

[0043] like Figure 2 As shown, the mounting surface for the crushing device 2 on the thin coal seam mining machine 1 is a plane perpendicular to the coal passage 3. Therefore, the mounting base 24 is also a flat plate to match the mounting surface. Of course, other shapes of mounting bases 24 are not excluded, as long as they match the mounting surface on the thin coal seam mining machine 1 as closely as possible.

[0044] Furthermore, to better fulfill its auxiliary coal collection function, when the crushing device 2 is installed on the thin coal seam mining machine 1, the envelope of the end of the baffle 22 near the outer side of the thin coal seam mining machine 1 is mapped to the outer side of the coal passage 3 perpendicular to it. In short, the width formed by the overlapping of the tooth mounting plate 23 and the baffle 22 is wider than the coal passage 3, that is, the width of the crushing device 2 is wider than the coal passage 3. This allows large pieces of coal or gangue to be concentrated in the coal passage 3 near the lower edge of the bottom of the thin coal seam mining machine 1, preventing large pieces of coal or gangue from leaking out.

[0045] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A crushing device suitable for thin coal seam mining machines, for installation above the coal passage of the thin coal seam mining machine, characterized in that, It includes elongated crushing teeth; the length direction of the crushing teeth forms a non-right angle with the coal conveying direction of the coal passage, and the crushing teeth face the coal passage.

2. The crushing device for thin coal seam mining machines according to claim 1, characterized in that, It also includes baffles; The baffle is used to be installed at one end of the crushing device near the outside of the thin coal seam mining machine, and the baffle is inclined downward in that direction.

3. The crushing device for thin coal seam mining machines according to claim 2, characterized in that, It also includes a tooth mounting plate, wherein there are multiple breaking teeth, which are evenly distributed and mounted on the tooth mounting plate, and the breaking teeth protrude from the tooth mounting plate.

4. The crushing device for thin coal seam mining machines according to claim 3, characterized in that, The baffle is installed above the tooth mounting plate.

5. The crushing device for thin coal seam mining machines according to claim 3, characterized in that, It also includes a mounting base, and the toothed mounting plate is connected to the mounting base; The crushing device is mounted on the thin coal seam mining machine via the mounting base.

6. The crushing device for thin coal seam mining machines according to claim 5, characterized in that, The baffle is connected to the mounting base and is located above the tooth mounting plate.

7. The crushing device for thin coal seam mining machines according to claim 5, characterized in that, The tooth mounting plate and the mounting base are connected by a connecting plate.

8. The crushing device for thin coal seam mining machines according to claim 3, characterized in that, The included angle is between 30 degrees and 60 degrees.

9. The crushing device for thin coal seam mining machines according to claim 3, characterized in that, The envelope of the baffle near the outer side of the thin coal seam mining machine is mapped to the outer side of the coal passage along a line perpendicular to the coal passage.

10. The crushing device for thin coal seam mining machines according to claim 3, characterized in that, The crushing teeth move closer and closer to the coal passage along the coal conveying direction.

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