Cutting pick wear-resistant reinforcing device of coal mining machine for coal mine

Abstract

The utility model relates to the technical field of coal mining machine accessories, and discloses a coal mining machine cutting pick wear-resistant reinforcing device which comprises a pick body, a square rod is connected to the middle of the pick body in a clamped mode, an alloy head is arranged at the top end of the square rod, a tungsten steel sleeve is connected to the top of the square rod in a clamped mode, and the tungsten steel sleeve is connected with a cutting head in a clamped mode. A plurality of wear-resistant blocks are arranged on the surface of the tungsten steel sleeve, clamping grooves are formed in the bottoms of the two sides of the square rod, clamping blocks are connected into the clamping grooves in a clamped mode, and a vertical plate is arranged on one side of each clamping block. The wear-resistant capacity of the tooth body can be improved through the alloy head and the tungsten steel sleeve, the wear-resistant block can protrude out of the tungsten steel sleeve, the wear-resistant capacity of the tungsten steel sleeve is improved, the alloy head and the tungsten steel sleeve can be limited through the square rod, the supporting area is increased, the stability of the alloy head and the tungsten steel sleeve is improved, disassembly is convenient, and the alloy head and the tungsten steel sleeve are convenient to replace after being abraded; and the external space of the tooth body and the tooth handle is not occupied.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mining machine accessories, specifically a wear-resistant enhancement device for coal mining machine cutting teeth. Background Technology

[0002] Mining picks are among the vulnerable parts in coal mining and tunneling machinery. They are the main tools for cutting and crushing coal, and their performance directly affects the production capacity, power consumption, operational stability, and service life of other related components of the mining machinery.

[0003] The application number "202322269351.X" discloses "a high wear-resistant cutting tooth", which "includes a cutting tooth body and a base. The cutting tooth body is snapped into the top end of the base. The top end of the cutting tooth body is provided with an installation groove. A wear-resistant body is slidably connected to the inner wall of the installation groove. A fixing groove is provided to the inner wall of the wear-resistant body. A cutting head body is slidably connected to the inner wall of the fixing groove. A cutting head is fixedly connected inside the cutting head body. A second fixing groove is provided on the outer walls of both ends of the cutting head body. A second sliding groove is provided at the top end of the outer wall of the wear-resistant body. A second positioning block is slidably connected to the inner wall of the second sliding groove. One end of the outer wall of the second positioning block matches the inner wall of the second fixing groove. The second positioning block is slidably connected to the second fixing groove." In this invention, when the cutting head is damaged or the wear-resistant body at the top is worn, the cutting tooth body can be easily disassembled by rotating the screw to drive the fixing block to slide. The positioning block and the second positioning block can be pulled out by the pull hook for quick replacement, avoiding the need for complete replacement, reducing costs. Moreover, the overall assembly structure is easy to assemble and disassemble, and is sturdy and stable, enhancing the practicality of the equipment.

[0004] However, the above method still has the following drawbacks: the cutter head and wear-resistant body can be replaced by setting a base, avoiding the need for overall replacement and reducing costs. However, it requires positioning by a positioning block. The support area of ​​the positioning block is small and the stability is poor. In addition, the base is large and takes up a lot of space, making it inconvenient to install the cutting teeth. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a wear-resistant enhancement device for coal mining machine cutting teeth, which has the advantages of good stability and easy installation, and solves the problems mentioned in the background technology.

[0006] This utility model provides the following technical solution: a wear-resistant reinforcing device for coal mining machine cutting teeth, comprising a tooth body, a square rod engaged with the middle of the tooth body, an alloy head at the top of the square rod, a tungsten steel sleeve engaged with the top of the square rod, a plurality of wear-resistant blocks on the surface of the tungsten steel sleeve, slots at the bottom of both sides of the square rod, a locking block engaged with the inside of the slots, a vertical plate on one side of the locking block, a push plate at the bottom of the vertical plate, a tooth shank at the bottom of the tooth body, an installation groove inside the tooth shank, a support component for supporting the push plate inside the installation groove, and a sealing component at the bottom of the installation groove.

[0007] As a preferred embodiment of this utility model, a square groove is provided in the middle of the tooth body, the bottom of the square rod is engaged with the square groove, a square groove is provided in the middle of the tungsten steel sleeve, and the top of the square rod is engaged with the square groove.

[0008] As a preferred technical solution of this utility model, a limiting groove communicating with the square groove is provided in the middle of the top of the tungsten steel sleeve, and a limiting block is fixedly provided at the bottom of the alloy head, and the limiting block is engaged with the limiting groove.

[0009] As a preferred embodiment of the present invention, the support assembly includes a support sleeve, which is fixedly connected to the interior of the mounting groove by screws. A support rod is fixedly provided inside the support sleeve, and support springs are sleeved on both sides of the support rod. A square hole is provided on the surface of the push plate to slide and connect with the support rod.

[0010] As a preferred embodiment of this utility model, a support block is fixedly provided inside the mounting groove, and plate grooves are provided on both sides of the support block, with the upright plate slidably connected to the plate grooves.

[0011] As a preferred technical solution of this utility model, the sealing assembly includes a blocking plate, which is fixedly connected to the bottom of the mounting groove. Both sides of the blocking plate are rotatably connected to a rotating shaft. The top of the rotating shaft is fixedly provided with an insert. The bottom of the mounting groove is provided with a slot that engages with the insert. The bottom end of the rotating shaft is fixedly provided with a knob.

[0012] As a preferred embodiment of this utility model, supports are fixedly provided on both sides of the top of the blocking plate, and a spring piece is fixedly provided on one side of the support, with one side of the spring piece connected to the top of the rotating shaft.

[0013] As a preferred embodiment of this utility model, a retaining spring is sleeved on the surface of the toothed shank, and a retaining ring is fixedly provided at the bottom of the toothed shank, with the retaining spring located at the top of the retaining ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The alloy head and tungsten carbide sleeve improve the wear resistance of the gear body. The wear-resistant block protrudes from the tungsten carbide sleeve, further enhancing its wear resistance. The square rod limits the position of the alloy head and tungsten carbide sleeve and increases the support area, improving their stability. It is easy to disassemble and replace the alloy head and tungsten carbide sleeve after wear, without occupying external space of the gear body and gear shank, ensuring proper installation of the gear shank.

[0016] 2. The support component can support the push plate, thereby maintaining the stability of the locking block and preventing it from loosening. The locking block can lock the square rod, preventing it from loosening and falling off. The square rod can be disassembled by pulling out the locking block. The sealing component can seal the bottom of the mounting groove, preventing the entry of foreign objects and providing protection for the support component. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the tungsten carbide wear-resistant sleeve of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the support component of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the coal sealing assembly of this utility model;

[0023] Figure 7 This utility model Figure 2 A magnified structural diagram at point A.

[0024] In the diagram: 1. Tooth body; 2. Square rod; 3. Tungsten carbide sleeve; 4. Alloy head; 5. Limiting block; 6. Wear-resistant block; 7. Square groove one; 8. Tooth shank; 9. Mounting groove; 10. Square groove two; 11. Slot; 12. Slot block; 13. Vertical plate; 14. Push plate; 15. Square hole; 16. Support assembly; 1601. Support sleeve; 1602. Support rod; 1603. Support spring; 17. Sealing assembly; 1701. Blocking plate; 1702. Rotating shaft; 1703. Insert; 1704. Knob; 1705. Support; 1706. Spring; 18. Slot; 19. Limiting groove; 20. Snap ring; 21. Retaining ring; 22. Support block; 23. Plate groove. Detailed Implementation

[0025] 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.

[0026] See also Figures 1-7 A wear-resistant reinforcing device for coal mining machine cutting teeth includes a tooth body 1. A square rod 2 is engaged with the middle of the tooth body 1. An alloy head 4 is provided at the top of the square rod 2. A tungsten steel sleeve 3 is engaged with the top of the square rod 2. Several wear-resistant blocks 6 are provided on the surface of the tungsten steel sleeve 3. The tungsten steel sleeve 3 can improve the wear resistance of the tooth body 1. The wear-resistant blocks 6 can protrude from the tungsten steel sleeve 3, further improving the wear resistance of the tungsten steel sleeve 3. The square rod 2 can limit the movement of the alloy head 4 and the tungsten steel sleeve 3. A slot 11 is provided at the bottom of both sides of the square rod 2. A locking block 12 is engaged inside the slot 11. A vertical plate 13 is provided on one side of the locking block 12, and a push plate 14 is provided at the bottom of the vertical plate 13. A toothed shank 8 is provided at the bottom of the tooth body 1. An installation groove 9 is provided inside the toothed shank 8. A support component 16 is provided inside the installation groove 9 to support the push plate 14. The support component 16 can support the push plate 14, thereby maintaining the stability of the locking block 12 and preventing the locking block 12 from loosening. A sealing component 17 is provided at the bottom of the installation groove 9. The sealing component 17 can seal the bottom of the installation groove 9 to prevent the entry of foreign objects and to protect the support component 16.

[0027] In this embodiment, preferably, the support assembly 16 includes a support sleeve 1601, which is fixedly connected to the inside of the mounting groove 9 by screws. A support rod 1602 is fixedly installed inside the support sleeve 1601. Support springs 1603 are sleeved on both sides of the support rod 1602. A square hole 15 is opened on the surface of the push plate 14 and is slidably connected to the support rod 1602. The support spring 1603 can support the push plate 14, which can make the locking block 12 engage with the locking groove 11. The locking block 12 can lock the square rod 2 and prevent the square rod 2 from falling off. The push plate 14 can slide on the support rod 1602 through the square hole 15. By sliding the push plate 14, it can compress the support spring 1603, and the locking block 12 can be pulled out from the locking groove 11, which is convenient for disassembling the square rod 2.

[0028] In this embodiment, preferably, the sealing assembly 17 includes a blocking plate 1701, which is fixedly connected to the bottom of the mounting groove 9. A rotating shaft 1702 is rotatably connected to both sides of the blocking plate 1701. An insert 1703 is fixedly provided at the top of the rotating shaft 1702. A slot 18 that engages with the insert 1703 is provided at the bottom of the mounting groove 9. A knob 1704 is fixedly provided at the bottom end of the rotating shaft 1702. Supports 1705 are fixedly provided on both sides of the top of the blocking plate 1701. A spring piece 1706 is fixedly provided on one side of each support 1705. One side of 1706 is connected to the top of the rotating shaft 1702. The insert 1703 is rotated by the rotating shaft 1702, causing the insert 1703 to retract and compress the spring 1706, making it elastically deformed. This facilitates the insertion of the blocking plate 1701 into the mounting groove 9. After the compression of the spring 1706 stops, the spring 1706 can return to its original position, and the insert 1703 can be pushed into the slot 18 to fix the blocking plate 1701. The blocking plate 1701 can seal the bottom of the mounting groove 9, preventing the entry of foreign objects and providing protection for the support component 16.

[0029] In this embodiment, preferably, a square groove 7 is provided in the middle of the tooth body 1, the bottom of the square rod 2 is engaged with the square groove 7, a square groove 10 is provided in the middle of the tungsten steel sleeve 3, and the top of the square rod 2 is engaged with the square groove 10. The square groove 7 and the square groove 10 can limit the square rod 2 and prevent it from rotating. A limiting groove 19 communicating with the square groove 10 is provided in the middle of the top of the tungsten steel sleeve 3. A limiting block 5 is fixedly provided at the bottom of the alloy head 4. The limiting block 5 is engaged with the limiting groove 19. The limiting groove 19 can accommodate the limiting block 5. The limiting block 5 can limit the tungsten steel sleeve 3 and prevent it from falling off after passing through the alloy head 4.

[0030] In this embodiment, preferably, a support block 22 is fixedly provided inside the mounting groove 9, and plate grooves 23 are provided on both sides of the support block 22. The upright plate 13 is slidably connected to the plate grooves 23. A retaining spring 20 is sleeved on the surface of the toothed handle 8, and a retaining ring 21 is fixedly provided at the bottom of the toothed handle 8. The retaining spring 20 is located at the top of the retaining ring 21. The tooth body 1 can be installed through the retaining spring 20 and the toothed handle 8.

[0031] In use, first push the two push plates 14 in opposite directions to open them up, so that the push plates 14 compress the support spring 1603 of the support assembly 16, causing the locking block 12 to retract. Then, the square rod 2 passes through the square groove 2 10 and the square groove 1 7 in sequence, so that the square rod 2 engages with the tooth body 1 and the tungsten steel sleeve 3, and push the limiting block 5 into the limiting groove 19 to prevent the tungsten steel sleeve 3 from falling off. Then release the push plate 14, and the support spring 1603 can push the push plate 14 to reset, so that the locking block 12 can be pushed into the locking groove 11, thereby locking the square rod 2. The square rod 2 can lock the tungsten steel sleeve 3 through the alloy head 4.

[0032] After the square rod 2 is fixed, the operator rotates the shaft 1702 by the knob 1704 of the sealing component 17. The shaft 1702 drives the insert 1703 to rotate. The insert 1703 can retract and compress the spring 1706, causing it to deform elastically. Then, the blocking plate 1701 is placed into the installation groove 9. Then, the knob 1704 is released to stop compressing the spring 1706. The spring 1706 can return to its original position and the insert 1703 can be pushed into the slot 18 to fix the blocking plate 1701. The blocking plate 1701 can seal the bottom of the installation groove 9 to prevent the entry of foreign objects and provide protection for the support component 16. Then, the tooth 1 is fixed to the coal mining machine by the toothed handle 8 and the snap ring 20.

[0033] During the tunneling process, the square rod 2 can limit the alloy head 4 and the tungsten steel sleeve 3, and increase the support area, thereby improving the stability of the alloy head 4 and the tungsten steel sleeve 3. The alloy head 4 and the tungsten steel sleeve 3 can improve the wear resistance of the tooth body 1. The wear-resistant block 6 can protrude from the tungsten steel sleeve 3, thereby improving the wear resistance of the tungsten steel sleeve 3. When the alloy head 4 and the tungsten steel sleeve 3 need to be replaced after wear, the workers operate in reverse: first, remove the tooth shank 8 from the coal mining machine, then disassemble the blocking plate 1701, and then disassemble the square rod 2 to remove the alloy head 4 and the tungsten steel sleeve 3.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant reinforcing device for coal mining machine cutting teeth, comprising a tooth body (1), characterized in that: A square rod (2) is engaged in the middle of the tooth body (1). An alloy head (4) is provided at the top of the square rod (2). A tungsten steel sleeve (3) is engaged in the top of the square rod (2). Several wear-resistant blocks (6) are provided on the surface of the tungsten steel sleeve (3). A slot (11) is provided at the bottom of both sides of the square rod (2). A locking block (12) is engaged in the inside of the slot (11). A vertical plate (13) is provided on one side of the locking block (12). A push plate (14) is provided at the bottom of the vertical plate (13). A tooth shank (8) is provided at the bottom of the tooth body (1). An installation groove (9) is provided inside the tooth shank (8). A support component (16) for supporting the push plate (14) is provided inside the installation groove (9). A sealing component (17) is provided at the bottom of the installation groove (9).

2. The wear-resistant reinforcing device for coal mining machine cutting teeth according to claim 1, characterized in that: The tooth body (1) has a square groove 1 (7) in the middle, and the bottom of the square rod (2) is engaged with the square groove 1 (7). The tungsten steel sleeve (3) has a square groove 2 (10) in the middle, and the top of the square rod (2) is engaged with the square groove 2 (10).

3. The wear-resistant reinforcing device for coal mining machine cutting teeth according to claim 2, characterized in that: The top of the tungsten steel sleeve (3) has a limiting groove (19) that communicates with the square groove (10) in the middle. The bottom of the alloy head (4) is fixed with a limiting block (5), and the limiting block (5) is engaged with the limiting groove (19).

4. The wear-resistant reinforcing device for coal mining machine cutting teeth according to claim 1, characterized in that: The support assembly (16) includes a support sleeve (1601), which is fixedly connected to the inside of the mounting groove (9) by screws. A support rod (1602) is fixedly installed inside the support sleeve (1601). Support springs (1603) are sleeved on both sides of the support rod (1602). The surface of the push plate (14) has a square hole (15) that is slidably connected to the support rod (1602).

5. The wear-resistant reinforcing device for coal mining machine cutting teeth according to claim 1, characterized in that: The mounting groove (9) is fixedly provided with a support block (22), and the support block (22) has plate grooves (23) on both sides. The upright plate (13) is slidably connected to the plate grooves (23).

6. The wear-resistant reinforcing device for coal mining machine cutting teeth according to claim 1, characterized in that: The sealing assembly (17) includes a blocking plate (1701), which is fixedly connected to the bottom of the mounting groove (9). Both sides of the blocking plate (1701) are rotatably connected to a rotating shaft (1702). The top of the rotating shaft (1702) is fixedly provided with a insert (1703). The bottom of the mounting groove (9) is provided with a slot (18) that engages with the insert (1703). The bottom end of the rotating shaft (1702) is fixedly provided with a knob (1704).

7. The wear-resistant reinforcing device for coal mining machine cutting teeth according to claim 6, characterized in that: Both sides of the top of the blocking plate (1701) are fixedly provided with supports (1705), and a spring piece (1706) is fixedly provided on one side of the support (1705). One side of the spring piece (1706) is connected to the top of the rotating shaft (1702).

8. The wear-resistant reinforcing device for coal mining machine cutting teeth according to claim 1, characterized in that: A retaining ring (20) is fitted on the surface of the toothed shank (8), and a retaining ring (21) is fixedly provided at the bottom of the toothed shank (8). The retaining ring (20) is located at the top of the retaining ring (21).

Images