A wear-resistant tooth boot

Abstract

The present invention specifically discloses a wear-resistant tooth boot, which includes a tooth head, a first tooth column, a second tooth column, a tooth ring and a protective plate. The first tooth column is fixedly connected to the second tooth column and is located at one end of the second tooth column. The protective plate is fixedly connected to the first tooth column and is located at one end of the first tooth column. The tooth head is fixedly connected to the protective plate and is located on the side of the protective plate away from the first tooth column. The tooth ring is threadedly connected to the first tooth column and is sleeved on the outer wall of the first tooth column. The tooth ring has a first external thread, and the second tooth column has a second external thread. The setting of the above structure can prevent the wear-resistant tooth boot from loosening or even falling off due to vibration during the coal mining process, greatly enhancing the service life of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and particularly relates to an abrasion-resistant tooth boot. Background Art

[0002] At present, the shearer is one of the main equipment of the fully mechanized mining equipment set. The shearer evolved from the coal cutter. The shearer is a large and complex system integrating machinery, electricity and hydraulics. The coal mining end of the shearer mainly cuts the coal seam through the tooth boot, and is the main tool for coal falling and coal crushing.

[0003] However, the installation of the tooth boot is usually a threaded connection. During excavation, there will be violent collisions and vibrations. The ordinary threaded connection will cause the tooth boot to become loose or even detached, which easily causes damage to the tooth seat and significantly shortens the service life of the shearer drum. Summary of the Invention

[0004] The purpose of the present invention is to provide an abrasion-resistant tooth boot, aiming to solve the technical problem in the prior art that the installation of the tooth boot is usually a threaded connection. During excavation, there will be violent collisions and vibrations. The ordinary threaded connection will cause the tooth boot to become loose or even detached, which easily causes damage to the tooth seat and significantly shortens the service life of the shearer drum.

[0005] To achieve the above purpose, an abrasion-resistant tooth boot adopted by the present invention includes a tooth head, a first tooth post, a second tooth post, a tooth ring and a protective plate. The first tooth post is fixedly connected to the second tooth post and is located at one end of the second tooth post. The protective plate is fixedly connected to the first tooth post and is located at one end of the first tooth post. The tooth head is fixedly connected to the protective plate and is located on the side of the protective plate away from the first tooth post. The tooth ring is threadedly connected to the first tooth post and is sleeved on the outer wall of the first tooth post. The tooth ring has a first external thread, and the second tooth post has a second external thread.

[0006] After fixing the toothed ring by passing it through the second tooth post and threadedly connecting it to the first tooth post, after the toothed ring is fixed, threadedly connect the second tooth post and the toothed ring to the tooth seat, and the protective plate is closely attached to the tooth seat to protect the tooth seat. The arrangement of the first external thread and the second external thread facilitates connection to the tooth seat. The tooth head is used for excavating the coal seam. Among them, the threaded connection direction between the second tooth post and the tooth seat is the same as the threaded connection direction between the toothed ring and the tooth seat. The threaded connection direction between the toothed ring and the first tooth post is opposite to the threaded connection direction between the second tooth post and the tooth seat, and the thread engagement degree between the toothed ring and the first tooth post is lower than the thread engagement degree between the toothed ring and the tooth seat. That is, when vibrating, the connection between the toothed ring and the first tooth post loosens preferentially. When the connection between the toothed ring and the first tooth post loosens, the other end causes the second tooth post and the tooth seat to be tightened. Vice versa, when the second tooth post and the tooth seat loosen, the toothed ring and the first tooth post are tightened. The setting of the above structure can prevent the wear-resistant tooth boot from loosening or even falling off due to vibration during coal mining, greatly enhancing the service life of the equipment.

[0007] Among them, the diameter of the second tooth post is smaller than that of the first tooth post, and the second external thread is far from the first tooth post.

[0008] The fact that the second tooth post is smaller than the first tooth post facilitates the connection between the toothed ring and the first tooth post and the insertion of the toothed ring.

[0009] Among them, one end of the toothed ring close to the protective plate has a plurality of card slots, the protective plate has a plurality of through holes, and the through holes are adapted to the card slots.

[0010] Through the setting of the card slots and the through holes, installation and disassembly can be carried out with specific tools, effectively preventing the connection between the toothed ring and the first tooth post from rotating during installation and disassembly.

[0011] Among them, the tooth head includes a tooth sleeve, wear-resistant welding rods, and cemented carbide cutting heads. The tooth sleeve is fixedly connected to the protective plate and is located on one side of the protective plate. The number of wear-resistant welding rods is multiple, and the multiple wear-resistant welding rods are respectively fixedly connected to the tooth sleeve and are respectively located on the outer wall of the tooth sleeve. The cemented carbide cutting head is threadedly connected to the tooth sleeve and is located at the end of the tooth sleeve away from the protective plate.

[0012] Through the setting of the tooth sleeve, the tooth boot can be further protected. At the same time, the setting of the wear-resistant welding rods can make the tooth head more wear-resistant and greatly improve the service life. At the same time, the cemented carbide cutting head can play the role of coal dropping and coal crushing.

[0013] Wherein, the cemented carbide cutting head includes a cutting head column and a cutting cone. The cutting head column is threadedly connected to the tooth sleeve and is located inside the tooth sleeve. The cutting cone is fixedly connected to the cutting head column and is located at one end of the cutting head column.

[0014] The cutting cone is installed and fixed by the cutting head column, and the cutting cone cuts the coal seam.

[0015] Wherein, the cutting cone is made of an alloy material of any one or more of tungsten carbide, titanium carbide, tantalum carbide or cobalt.

[0016] The bending strength of the cutting cone can be improved by the tungsten carbide and the cobalt, and at the same time, it has good thermal conductivity. The titanium carbide can improve the hardness, wear resistance and red hardness of the cutting cone, and the bonding temperature and oxidation resistance of the cutting cone are enhanced. The tantalum carbide can improve the bending strength, impact toughness, high-temperature hardness, oxidation resistance and wear resistance of the cutting cone.

[0017] For a wear-resistant tooth boot of the present invention, after passing the tooth ring through the second tooth column and threadedly connecting it to the first tooth column, and after fixing the tooth ring, the second tooth column and the tooth ring are threadedly connected to the tooth seat, and the protective plate is closely attached to the tooth seat to protect the tooth seat. The arrangement of the first external thread and the second external thread facilitates the connection with the tooth seat. The tooth head is used for excavating the coal seam. Wherein, the threaded connection direction between the second tooth column and the tooth seat is the same as the threaded connection direction between the tooth ring and the tooth seat, and the threaded connection direction between the tooth ring and the first tooth column is opposite to the threaded connection direction between the second tooth column and the tooth seat, and the thread engagement degree between the tooth ring and the first tooth column is lower than the thread engagement degree between the tooth ring and the tooth seat. That is, when vibrating, the connection between the tooth ring and the first tooth column is preferentially loosened. When the connection between the tooth ring and the first tooth column is loosened, the other end causes the second tooth column and the tooth seat to be tightened. Vice versa, when the second tooth column and the tooth seat are loosened, the tooth ring and the first tooth column are tightened. The above structure can prevent the wear-resistant tooth boot from being loosened or even falling off due to vibration during coal mining, greatly enhancing the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a wear-resistant tooth boot of the present invention.

[0019] Figure 2 is a front view of a wear-resistant tooth boot of the present invention.

[0020] Figure 3 is a bottom view of a wear-resistant tooth boot of the present invention.

[0021] Figure 4 is of the present inventionFigure 2 Sectional view of the A-A line structure

[0022] 1 - Tooth head, 2 - First tooth column, 3 - Second tooth column, 4 - Tooth ring, 5 - Protective plate, 6 - First external thread, 7 - Second external thread, 8 - Card slot, 9 - Through hole, 10 - Tooth sleeve, 11 - Wear-resistant welding rod, 12 - Cemented carbide cutting head, 13 - Cutting head column, 14 - Cutting cone, 15 - Bayonet, 16 - Wear-resistant tooth, 17 - Main wear welding rod, 18 - Auxiliary wear welding block Detailed implementation mode

[0023] Please refer to Figures 1 to 4 , the present invention provides a wear-resistant tooth boot, including a tooth head 1, a first tooth column 2, a second tooth column 3, a tooth ring 4, a protective plate 5, and wear-resistant teeth 16. The first tooth column 2 is fixedly connected to the second tooth column 3 and is located at one end of the second tooth column 3. The protective plate 5 is fixedly connected to the first tooth column 2 and is located at one end of the first tooth column 2. The tooth head 1 is fixedly connected to the protective plate 5 and is located on the side of the protective plate 5 away from the first tooth column 2. The tooth ring 4 is threadedly connected to the first tooth column 2 and sleeved on the outer wall of the first tooth column 2. The tooth ring 4 has a first external thread 6, and the second tooth column 3 has a second external thread 7. The diameter of the second tooth column 3 is smaller than that of the first tooth column 2, and the second external thread 7 is away from the first tooth column 2. Wherein, the fact that the second tooth column 3 is smaller than the first tooth column 2 can facilitate the connection between the tooth ring 4 and the first tooth column 2 and facilitate the insertion of the tooth ring 4. The number of the wear-resistant teeth 16 is multiple, and the multiple wear-resistant teeth 16 are respectively fixedly connected to the protective plate 5 and are located on the side of the protective plate 5 close to the tooth sleeve 10. The arrangement of the wear-resistant teeth 16 can protect the protective plate 5 and indirectly protect the tooth seat, increasing the wear resistance

[0024] In this embodiment, by passing the toothed ring 4 through the second toothed column 3 and threadedly connecting it to the first toothed column 2, after the toothed ring 4 is fixed, the second toothed column 3 and the toothed ring 4 are threadedly connected to the toothed seat, and the protective plate 5 is closely attached to the toothed seat to protect the toothed seat. The arrangement of the first external thread 6 and the second external thread 7 facilitates connection to the toothed seat. The tooth head 1 is used for excavating the coal seam. Among them, the threaded connection direction of the second toothed column 3 and the toothed seat is the same as the threaded connection direction of the toothed ring 4 and the toothed seat, and the threaded connection direction of the toothed ring 4 and the first toothed column 2 is opposite to the threaded connection direction of the second toothed column 3 and the toothed seat. Moreover, the thread engagement degree of the toothed ring 4 and the first toothed column 2 is lower than the thread engagement degree of the toothed ring 4 and the toothed seat. That is, when vibrating, the connection between the toothed ring 4 and the first toothed column 2 is prone to looseness first. When the toothed ring 4 and the first toothed column 2 become loose, on the other end, the second toothed column 3 and the toothed seat are tightened. Vice versa, if the second toothed column 3 and the toothed seat become loose, the toothed ring 4 and the first toothed column 2 are tightened. The setting of the above structure can prevent the wear-resistant tooth boot from loosening or even falling off due to vibration during coal mining, greatly enhancing the service life of the equipment. One end of the toothed ring 4 close to the protective plate 5 has a plurality of card slots 8, the protective plate 5 has a plurality of through holes 9, and the through holes 9 are adapted to the card slots 8. The card slots 8 and the through holes 9 can be installed and disassembled by specific tools, which can effectively prevent the connection between the toothed ring 4 and the first toothed column 2 from rotating during the installation and disassembly process.

[0025] The tooth head 1 includes a tooth sleeve 10, wear-resistant welding rods 11, and cemented carbide cutting heads 12. The tooth sleeve 10 is fixedly connected to the protective plate 5 and is located on one side of the protective plate 5. The number of the wear-resistant welding rods 11 is multiple, and the multiple wear-resistant welding rods 11 are respectively fixedly connected to the tooth sleeve 10 and are respectively located on the outer surface wall of the tooth sleeve 10. The cemented carbide cutting head 12 is threadedly connected to the tooth sleeve 10 and is located at one end of the tooth sleeve 10 away from the protective plate 5.

[0026] In this embodiment, through the setting of the tooth sleeve 10, the tooth boot can be further protected. At the same time, the setting of the wear-resistant welding rods 11 can make the tooth head 1 more wear-resistant, greatly improving the service life. At the same time, the cemented carbide cutting head 12 can play the role of coal falling and coal crushing.

[0027] The cemented carbide cutting head 12 includes a cutting head column 13 and a cutting cone 14. The cutting head column 13 is threadedly connected to the tooth sleeve 10 and is located inside the tooth sleeve 10. The cutting cone 14 is fixedly connected to the cutting head column 13 and is located at one end of the cutting head column 13. The cutting head column 13 is used to install and fix the cutting cone 14, and the cutting cone 14 cuts the coal seam. In this embodiment, the cutting cone 14 is made of an alloy material of any one or more of tungsten carbide, titanium carbide, tantalum carbide or cobalt.

[0028] In this embodiment, the bending strength of the cutting cone 14 can be improved by the tungsten carbide and the cobalt, and at the same time, the thermal conductivity is good. The titanium carbide can improve the hardness, wear resistance and red hardness of the cutting cone 14, and the bonding temperature and oxidation resistance of the cutting cone 14 are enhanced. The tantalum carbide can improve the bending strength, impact toughness, high temperature hardness, oxidation resistance and wear resistance of the cutting cone 14.

[0029] The cutting cone 14 has a bayonet 15. The number of the bayonets 15 is multiple, and the bayonets 15 are uniformly arranged on the outer wall of the cutting cone 14. In this embodiment, through the arrangement of the bayonets 15, it is convenient to disassemble and install the cemented carbide cutting head 12 by tools. Each wear-resistant welding rod 11 includes a main wear welding rod 17 and auxiliary wear welding blocks 18. The main wear welding rod 17 is fixedly connected to the tooth sleeve 10 and is located on the outer wall of the tooth sleeve 10. The number of the auxiliary wear welding blocks 18 is multiple, and each auxiliary wear welding block 18 is respectively fixedly connected to the main wear welding rod 17 and the tooth sleeve 10. In this embodiment, the main wear welding rod 17 plays a major anti-wear role, and at the same time, the auxiliary wear welding blocks 18 guide a part of the coal seam, reduce the wear speed of the main wear welding rod 17, and play an effective auxiliary role for the main wear welding rod 17.

Claims

1. A wear-resistant tooth boot, characterized in that, it includes a tooth head, a first tooth column, a second tooth column, a tooth ring and a protective plate. The first tooth column is fixedly connected to the second tooth column and is located at one end of the second tooth column. The protective plate is fixedly connected to the first tooth column and is located at one end of the first tooth column. The tooth head is fixedly connected to the protective plate and is located on the side of the protective plate away from the first tooth column. The tooth ring is threadedly connected to the first tooth column and is sleeved on the outer wall of the first tooth column. The tooth ring has a first external thread, and the second tooth column has a second external thread; The screwing direction of the second tooth column and the tooth seat is the same as the screwing direction of the tooth ring and the tooth seat. The screwing direction of the connection between the tooth ring and the first tooth column is opposite to the screwing direction of the second tooth column and the tooth seat. And the thread engagement degree of the tooth ring and the first tooth column is lower than the thread engagement degree of the tooth ring and the tooth seat. That is, when vibrating, the connection between the tooth ring and the first tooth column is preferentially loosened. When the connection between the tooth ring and the first tooth column is loosened, the other end causes the second tooth column and the tooth seat to be tightened. Vice versa, when the second tooth column and the tooth seat are loosened, the tooth ring and the first tooth column are tightened.

2. The wear-resistant tooth boot according to claim 1, characterized in that, the diameter of the second tooth column is smaller than the diameter of the first tooth column, and the second external thread is away from the first tooth column.

3. The wear-resistant tooth boot according to claim 2, characterized in that, one end of the tooth ring close to the protective plate has a plurality of card slots, the protective plate has a plurality of through holes, and the through holes are adapted to the card slots.

4. The wear-resistant tooth boot according to claim 3, characterized in that, the tooth head includes a tooth sleeve, wear-resistant welding rods and cemented carbide cutting heads. The tooth sleeve is fixedly connected to the protective plate and is located on one side of the protective plate. The number of the wear-resistant welding rods is multiple. The multiple wear-resistant welding rods are respectively fixedly connected to the tooth sleeve and are respectively located on the outer wall of the tooth sleeve. The cemented carbide cutting head is threadedly connected to the tooth sleeve and is located at one end of the tooth sleeve away from the protective plate.

5. The wear-resistant tooth boot according to claim 4, characterized in that, the cemented carbide cutting head includes a cutting head column and a cutting cone. The cutting head column is threadedly connected to the tooth sleeve and is located inside the tooth sleeve. The cutting cone is fixedly connected to the cutting head column and is located at one end of the cutting head column.

6. The wear-resistant tooth boot according to claim 5, characterized in that, the cutting cone is made of any one or more alloy materials of tungsten carbide, titanium carbide, tantalum carbide or cobalt.

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