Diamond polycrystalline tunneling tooth

Abstract

The utility model relates to the technical field of coal mining, and discloses a polycrystalline diamond tunneling tooth which comprises a tooth handle, a tooth table is fixedly connected to the top end of the tooth handle, an installation cover is arranged at the top end of the tooth table, a tooth tip is arranged on the inner wall of the tooth table, a limiting ring is fixedly connected to the outer wall of the tooth tip, and limiting assemblies are arranged at the four corners of the inner wall of the tooth table. The limiting assembly comprises fixing blocks located at the four corners of the inner wall of the tooth table in a sliding connection mode, the bottom ends of the fixing blocks are fixedly connected with sliding blocks, the sliding blocks are connected with the inner wall of the tooth table through springs, and fixing assemblies are arranged at the four corners of the inner wall of the mounting cover. According to the utility model, when the tooth tip on the mounting cover is fixed on the tooth table through the bolt, the fixing block can be pushed to move inwards, the tooth tip is further fixed, the fixing effect is improved, and the tooth tip can be conveniently taken out and conveniently replaced by screwing out the bolt, so that the maintenance cost is reduced, and the use of people is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to a polycrystalline diamond tunneling tooth. Background Technology

[0002] Tunneling teeth, often referred to as cutting teeth, are key tools in fields such as mining and tunnel construction. They are mainly used on coal mining machines and tunneling machines to cut coal and rock, serving as the cutting tools on these machines that directly break through rock and deliver coal.

[0003] In the existing technology, the tip of the cutting tooth is easily damaged during use, and the entire cutting tooth needs to be replaced after the tip is damaged, which makes the overall maintenance cost of the equipment high and is not conducive to people's use. In addition, the existing tunneling teeth are made of hard steel or hard alloy steel, which generally have poor wear resistance and impact resistance, which seriously shortens the service life of the tunneling teeth.

[0004] In response to this technical problem, this application proposes a polycrystalline diamond tunneling tooth. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a diamond polycrystalline tunneling tooth. When the tooth tip on the mounting cover is fixed to the tooth platform by bolts, the fixing block can be pushed inward to further fix the tooth tip, which improves the fixing effect. Moreover, by unscrewing the bolts, the tooth tip can be easily removed, which facilitates the replacement of the tooth tip, reduces maintenance costs, and makes it convenient for people to use.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A polycrystalline diamond drilling tooth includes a tooth shank, a tooth platform fixedly connected to the top of the tooth shank, a mounting cover provided at the top of the tooth platform, a tooth tip provided on the inner wall of the tooth platform, a limit ring fixedly connected to the outer wall of the tooth tip, and limit components provided at each of the four corners of the inner wall of the tooth platform. Each limit component includes a fixed block slidably connected at the four corners of the inner wall of the tooth platform, and a slider fixedly connected to the bottom end of each fixed block.

[0008] The block is connected to the inner wall of the gear platform by a spring. The four corners of the inner wall of the mounting cover are provided with fixing components. The fixing components include bolts threaded to the four corners of the inner wall of the mounting cover. The bottom end of each bolt is fixedly connected with a conical head. The gear platform and the mounting cover are connected by bolts. The outer wall of the mounting cover is fixedly connected with a wear-resistant layer.

[0009] Furthermore, the four corners of the outer wall at the bottom of the tooth tip are provided with fixing grooves, which correspond to one end of the inner side of the fixing block.

[0010] Furthermore, one end of the outer side of the fixing block is set to be arc-shaped.

[0011] Furthermore, one end of the spring is connected to the slider, and the other end of the spring is connected to the inner wall of the gear platform. Furthermore, the tooth tip is a polycrystalline diamond tip.

[0012] Furthermore, the wear-resistant layer is a diamond layer.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, when the tooth tip on the mounting cover is fixed to the tooth platform by bolts, the fixing block can be pushed inward to further fix the tooth tip, which improves the fixing effect. Moreover, by unscrewing the bolts, the tooth tip can be easily removed, which facilitates the replacement of the tooth tip, reduces maintenance costs, and makes it convenient for people to use.

[0015] 2. In this utility model, the tooth tip is made of polycrystalline diamond, which has high hardness and good wear resistance, thus improving the wear resistance of the tunneling tooth, increasing its service life, and reducing the cost of use; at the same time, the wear-resistant layer is made of diamond, which further improves the wear resistance of the tunneling tooth. Attached Figure Description

[0016] Figure 1 is a perspective view of a diamond polycrystalline tunneling tooth proposed in this utility model;

[0017] Figure 2 is a schematic diagram of the structure of the cover installed in the diamond polycrystalline tunneling tooth proposed in this utility model;

[0018] Figure 3 is an enlarged view of A in Figure 2.

[0019] Legend:

[0020] 1. Tooth shank; 2. Tooth platform; 3. Mounting cover; 4. Tooth tip; 5. Limiting ring; 6. Wear-resistant layer; 7. Bolt; 8. Fixing block; 9. Slider; 10. Spring; 11. Fixing groove; 12. Conical head. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Refer to Figure 1- Figure 3This utility model provides an embodiment of a diamond polycrystalline drilling tooth, comprising a tooth shank 1, a tooth platform 2 fixedly connected to the top of the tooth shank 1, a mounting cover 3 provided at the top of the tooth platform 2, tooth tips 4 provided on the inner wall of the tooth platform 2, a limit ring 5 fixedly connected to the outer wall of the tooth tips 4, a fixing block 8 slidably connected to the four corners of the inner wall of the tooth platform 2, a slider 9 fixedly connected to the bottom of the fixing block 8, the slider 9 being connected to the inner wall of the tooth platform 2 by a spring 10, a fixing groove 11 provided at the four corners of the bottom outer wall of the tooth tip 4, the fixing groove 11 corresponding to one end of the inner side of the fixing block 8, the outer end of the fixing block 8 being arc-shaped, one end of the spring 10 being connected to the slider 9, the other end of the spring 10 being connected to the inner wall of the tooth platform 2, bolts 7 threadedly connected to the four corners of the inner wall of the mounting cover 3, each bolt 7 having a conical head 12 fixedly connected to its bottom end, and the tooth platform 2 and the mounting cover 3 being connected by bolts 7;

[0023] Specifically, using the limiting ring 5, the tooth tip 4 can be placed in the mounting cover 3, and then the mounting cover 3 is firmly connected to the tooth platform 2 by the bolt 7, ensuring that the tooth tip 4 is fixed on the tooth platform 2. When the bolt 7 moves downward, the conical head 12 also descends, pushing the fixing block 8 to move inward, so that it matches the fixing groove 11 on the tooth tip 4, further strengthening the fixation of the tooth tip 4. If the tooth tip 4 needs to be replaced, the bolt 7 is unscrewed to move the conical head 12 upward, releasing the pressure on the fixing block 8. At this time, the elastic force of the spring 10 will cause the slider 9 to move outward, driving the fixing block 8 to move outward, releasing the fixation of the tooth tip 4. Finally,

[0024] Remove the mounting cap 3 to easily replace the tooth tip 4.

[0025] Refer to Figure 1 and Figure 2 The outer wall of the mounting cover 3 is fixedly connected with a wear-resistant layer 6, the tooth tip 4 is a diamond polycrystalline head, and the wear-resistant layer 6 is a diamond layer;

[0026] Specifically, the tooth tip 4 is made of polycrystalline diamond, which has excellent wear resistance, thus extending its service life and effectively reducing operating costs. The outer wall of the mounting cover 3 is covered with a diamond wear-resistant layer 6, which not only further enhances the wear resistance of the boring tooth but also significantly improves its service life.

[0027] Working principle: First, the limiting ring 5 allows the tooth tip 4 to be placed inside the mounting cover 3. Then, the mounting cover 3 and the tooth platform 2 are fixed by the bolt 7, thus fixing the tooth tip 4 onto the tooth platform 2. When the bolt 7 moves downward, the conical head 12 moves downward, pushing the fixing block 8 inward so that it corresponds to the fixing groove 11 on the tooth tip 4, further fixing the tooth tip 4. When the tooth tip 4 needs to be replaced, unscrewing the bolt 7 moves the conical head 12 upward, releasing the pressure on the fixing block 8. Then, the elastic force of the spring 10 moves the slider 9 outward, which in turn moves the fixing block 8 outward, no longer fixing the fixing block 8. The mounting cover 3 can then be removed, facilitating the replacement of the tooth tip 4. Secondly, the tooth tip 4 is a polycrystalline diamond head, which has high wear resistance and long service life, reducing the cost of use. The wear-resistant layer 6 is also included. The diamond layer further improves the wear resistance of the tunneling teeth and extends their service life.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A polycrystalline diamond drilling tooth, characterized in that: The device includes a toothed shank (1), a toothed platform (2) fixedly connected to the top of the toothed shank (1), a mounting cover (3) provided at the top of the toothed platform (2), a tooth tip (4) provided on the inner wall of the toothed platform (2), a limit ring (5) fixedly connected to the outer wall of the tooth tip (4), and limit components provided at the four corners of the inner wall of the toothed platform (2). The limit components include a fixed block (8) slidably connected at the four corners of the inner wall of the toothed platform (2), a slider (9) fixedly connected at the bottom of the fixed block (8), and the slider (9) connected to the inner wall of the toothed platform (2) by a spring (10). The mounting cover (3) is provided with a fixing component at the four corners of the inner wall, and the fixing component includes a bolt (7) threadedly connected at the four corners of the inner wall of the mounting cover (3). A conical head (12) is fixedly connected to the bottom of each bolt (7). The toothed platform (2) and the mounting cover (3) are connected by bolts (7), and a wear-resistant layer (6) is fixedly connected to the outer wall of the mounting cover (3).

2. The polycrystalline diamond drilling tooth according to claim 1, characterized in that: The tooth tip (4) has a fixing groove (11) at the four corners of the bottom outer wall, and the fixing groove (11) corresponds to one end of the inner side of the fixing block (8).

3. The polycrystalline diamond drilling tooth according to claim 1, characterized in that: The outer end of the fixing block (8) is set to be arc-shaped.

4. The polycrystalline diamond drilling tooth according to claim 1, characterized in that: One end of the spring (10) is connected to the slider (9), and the other end of the spring (10) is connected to the inner wall of the gear platform (2).

5. A polycrystalline diamond drilling tooth according to claim 1, characterized in that: The tooth tip (4) is a polycrystalline diamond head.

6. A polycrystalline diamond drilling tooth according to claim 1, characterized in that: The wear-resistant layer (6) is a diamond layer.

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