Rotary cutting tooth device for coal mining machine

Abstract

The utility model discloses a rotary cutting tooth device for a coal mining machine, which comprises a mounting seat, an angle adjusting mechanism is arranged on the upper surface of the mounting seat, the angle adjusting mechanism comprises a base, and the upper surface of the base is fixedly connected with a mounting plate; and the outer surface of the mounting plate is rotationally connected with a rotating rod. According to the rotary cutting tooth device for the coal mining machine, through the arrangement of the telescopic rod, the clamping block, the gear, the strong spring, the rotating frame and the rotating rod, when rotating adjustment needs to be conducted, the telescopic rod can drive the clamping block to stretch out and draw back, the clamping block can be made to be away from the gear, and when the clamping block is away from the gear, the rotating frame is held by a hand; according to the cutting pick, small-amplitude rotation can be conducted through the arrangement of the rotating rod, the cutting pick body can be driven to conduct angle adjustment, meanwhile, after rotation adjustment is completed, the clamping block can be driven to stretch out and draw back through the resilience force of the strong spring and the telescopic rod, the clamping block and the gear are clamped, and therefore the fixing purpose can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tooth replacement technology, and in particular to a rotary cutting tooth device for coal mining machines. Background Technology

[0002] Mining cutter teeth are among the vulnerable parts in coal mining and tunneling machinery. They are the main tools for cutting and crushing coal. Based on the imported and domestic cutter teeth actually used in some domestic coal mines, the cutter body is mostly made of steels such as 42CrMo and 35CrMnSi. Some coal mines are also using domestically developed Si-Mn-Mo quasi-bainitic steel. The coal industry standard for cutter tooth production stipulates that the cutter body hardness should be 40-45 HRC. During production, the cutter body material should undergo heat treatment to meet or exceed the required mechanical performance indicators.

[0003] A rotary cutting tooth device for a coal mining machine is disclosed in Chinese Patent CN 213743397 U. This device, controlled by a button, moves a transmission rod to the right, causing the first and second locking tooth rods to move to the right. This drives the first gear to rotate counterclockwise and the second gear to rotate clockwise, respectively. This causes the internal limiting locking tooth rods of the first and second fixing devices to move upwards and downwards, thus separating them from the first and second locking slots inside the connecting base, allowing for easy removal of the cutting tooth assembly. This enables convenient replacement of the cutting tooth assembly. However, while solving the problem, this rotary cutting tooth device for a coal mining machine also has the following drawbacks:

[0004] When a coal mining machine is in operation, and coal is mined for extended periods, the cutting teeth are difficult to adjust to a suitable angle for mining. Over long periods of operation, this reduces the lifespan of the cutting teeth and affects mining efficiency. Furthermore, the cutting teeth are prone to damage when the coal mining machine uses a rotating cutting tooth device. Although the aforementioned patents have solved the convenience problem, they not only waste time but also significantly reduce work efficiency. Therefore, it is necessary to design a rotating cutting tooth device for coal mining machines. Utility Model Content

[0005] The main purpose of this utility model is to provide a rotary cutting tooth device for coal mining machines, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A rotary cutting tooth device for a coal mining machine includes a mounting base. An angle adjustment mechanism is provided on the upper surface of the mounting base. The angle adjustment mechanism includes a base and a mounting plate is fixedly connected to the upper surface of the base. A rotating rod is rotatably connected to the outer surface of the mounting plate, and a rotating frame is fixedly connected to the outer surface of the rotating rod. A groove is provided on the upper surface of the base, and a support rod is fixedly connected to the inner wall of the groove. A gear is fixedly connected to the outer surface of the support rod.

[0008] The present invention is further configured such that: a telescopic rod is fixedly connected to the lower surface of the rotating frame, and a locking block is fixedly connected to one end of the telescopic rod, and the locking block is engaged with the gear.

[0009] By adopting the above technical solution, the extension rod can be used to push the locking block to achieve the purpose of extension and retraction adjustment.

[0010] The present invention is further configured such that: a strong spring is provided on the outer surface of the telescopic rod, one end of the strong spring is fixedly connected to the rotating frame, and the other end of the strong spring is fixedly connected to the locking block.

[0011] By adopting the above technical solution, the strong spring is fixedly connected to the rotating frame and the locking block, so that the strong spring has the purpose of elasticity. After the adjustment is completed, the rebound force of the strong spring can be used to lock the locking block and the gear, thereby achieving the purpose of fixation.

[0012] The present invention is further configured such that: a fixed sleeve is fixedly connected to the upper surface of the rotating frame, and a cutting tooth body is provided on the inner wall of the fixed sleeve.

[0013] By adopting the above technical solution and setting the fixing sleeve, the main body of the cutting tooth can be installed, and the main body of the cutting tooth can be conveniently used for coal mining operations.

[0014] The present invention is further configured such that: a first threaded rod is threadedly connected to the outer surface of the fixed sleeve, a first hexagonal block is fixedly connected to one end of the first threaded rod, and a first fitting block is provided at one end of the first threaded rod.

[0015] By adopting the above technical solution, the rotation of the first threaded rod can drive the first bonding block to be adjusted, thereby using the first bonding block to fix the cutting tooth body.

[0016] The present invention is further configured such that: a second threaded rod is threadedly connected to the outer surface of the fixed sleeve, a second hexagonal block is fixedly connected to one end of the second threaded rod, and a second fitting block is provided at one end of the second threaded rod.

[0017] By adopting the above technical solution, the rotation of the second threaded rod can drive the second bonding block to be adjusted, thereby using the second bonding block to fix the cutting tooth body.

[0018] The present invention is further configured such that a connecting shaft block is fixedly connected to the lower surface of the mounting base.

[0019] By adopting the above technical solution and setting the connecting shaft block, it can be connected to the coal mining machine, which facilitates the fixed installation of the cutting teeth.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In this utility model, by setting up a telescopic rod, a locking block, a gear, a strong spring, a rotating frame, and a rotating rod, when rotation adjustment is required, the telescopic rod can drive the locking block to extend or retract, allowing the locking block to move away from the gear. When the locking block is away from the gear, by holding the rotating frame by hand, a small-amplitude rotation can be made through the rotating rod, which can drive the cutting tooth body to adjust its angle. At the same time, after the rotation adjustment is completed, the elastic force of the strong spring can be used to drive the telescopic rod to extend or retract, so that the locking block and the gear are locked together, thereby achieving the purpose of fixing.

[0022] 2. In this utility model, by setting up a first threaded rod, a first hexagonal block, a second threaded rod, a second hexagonal block, a first fitting block, and a second fitting block, when it is necessary to clamp and fix the cutting tooth body, a tool is used to clamp the first hexagonal block and rotate it, which can drive the first threaded rod to rotate. While the first threaded rod rotates, it can push the first fitting block to slide. During the sliding of the first fitting block, the cutting tooth body can be clamped and fixed. A tool is used to clamp the second hexagonal block and rotate it, which can drive the second threaded rod to rotate. While the second threaded rod rotates, it can push the second fitting block to slide. During the sliding of the second fitting block, the cutting tooth body can be clamped and fixed. This method can also clamp cutting tooth bodies of different specifications and can also replace the cutting tooth body. Attached Figure Description

[0023] Figure 1 This is a front view structural diagram of the present utility model;

[0024] Figure 2 This is a schematic diagram of the angle adjustment mechanism of this utility model;

[0025] Figure 3 This is a schematic diagram of the main structure of the cutting tooth of this utility model;

[0026] Figure 4 This is a schematic diagram of the first threaded rod structure of this utility model.

[0027] In the diagram: 1. Mounting base; 2. Angle adjustment mechanism; 3. Base; 4. Mounting plate; 5. Rotating rod; 6. Rotating frame; 7. Groove; 8. Support rod; 9. Gear; 10. Telescopic rod; 11. Locking block; 12. Strong spring; 13. Fixing sleeve; 14. Cutting tooth body; 15. First threaded rod; 16. First hexagonal block; 17. First fitting block; 18. Second threaded rod; 19. Second hexagonal block; 20. Second fitting block; 21. Connecting shaft block. Detailed Implementation

[0028] 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.

[0029] like Figure 1-4 As shown, a rotary cutting tooth device for a coal mining machine includes a mounting base 1, an angle adjustment mechanism 2 is provided on the upper surface of the mounting base 1, the angle adjustment mechanism 2 includes a base 3, and a mounting plate 4 is fixedly connected to the upper surface of the base 3.

[0030] In this embodiment, a rotating rod 5 is rotatably connected to the outer surface of the mounting plate 4, a rotating frame 6 is fixedly connected to the outer surface of the rotating rod 5, a groove 7 is provided on the upper surface of the base 3, a support rod 8 is fixedly connected to the inner wall of the groove 7, and a gear 9 is fixedly connected to the outer surface of the support rod 8.

[0031] In practical use, when the locking block 11 is away from the gear 9, the rotating frame 6 can be held by hand and rotated slightly by the rotating rod 5, which can drive the cutting tooth body 14 to adjust the angle. At the same time, the support rod 8 can fix and support the gear 9.

[0032] In this embodiment, a telescopic rod 10 is fixedly connected to the lower surface of the rotating frame 6, and a locking block 11 is fixedly connected to one end of the telescopic rod 10. The locking block 11 is engaged with the gear 9.

[0033] In practical use, when rotation adjustment is required, the telescopic rod 10 can drive the locking block 11 to extend or retract, so that the locking block 11 can move away from the gear 9, thereby facilitating rotation adjustment. After the rotation adjustment is completed, the telescopic rod 10 can drive the locking block 11 to extend or retract, so that the locking block 11 can engage with the gear 9, thereby achieving the purpose of fixing.

[0034] In this embodiment, a strong spring 12 is provided on the outer surface of the telescopic rod 10. One end of the strong spring 12 is fixedly connected to the rotating frame 6, and the other end of the strong spring 12 is fixedly connected to the locking block 11.

[0035] In practical use, the strong spring 12 is fixedly connected to the rotating frame 6 and the locking block 11, so that the strong spring 12 has the purpose of elasticity. After the adjustment is completed, the rebound force of the strong spring 12 can be used to lock the locking block 11 and the gear 9, thereby achieving the purpose of fixation.

[0036] In this embodiment, a fixed sleeve 13 is fixedly connected to the upper surface of the rotating frame 6, and a cutting tooth body 14 is provided on the inner wall of the fixed sleeve 13.

[0037] In practical use, the cutting tooth body 14 can be installed through the setting of the fixing sleeve 13, and the cutting tooth body 14 can be conveniently used for coal mining operations.

[0038] In this embodiment, the outer surface of the fixing sleeve 13 is threadedly connected to a first threaded rod 15, one end of the first threaded rod 15 is fixedly connected to a first hexagonal block 16, and one end of the first threaded rod 15 is provided with a first fitting block 17.

[0039] In practical use, when it is necessary to clamp and fix the cutting tooth body 14, use a tool to clamp the first hexagonal block 16 and rotate it, which can drive the first threaded rod 15 to rotate. While the first threaded rod 15 is rotating, it can push the first bonding block 17 to slide. During the sliding of the first bonding block 17, the cutting tooth body 14 can be clamped and fixed.

[0040] In this embodiment, a second threaded rod 18 is threadedly connected to the outer surface of the fixing sleeve 13, a second hexagonal block 19 is fixedly connected to one end of the second threaded rod 18, and a second fitting block 20 is provided at one end of the second threaded rod 18.

[0041] In practical use, when it is necessary to clamp and fix the cutting tooth body 14, use a tool to clamp the second hexagonal block 19 and rotate it, which can drive the second threaded rod 18 to rotate. While the second threaded rod 18 is rotating, it can push the second bonding block 20 to slide. During the sliding of the second bonding block 20, the cutting tooth body 14 can be clamped and fixed.

[0042] In this embodiment, a connecting shaft block 21 is fixedly connected to the lower surface of the mounting base 1.

[0043] In practical use, the connecting shaft block 21 can be used to connect with the coal mining machine, making it convenient to fix and install the cutting teeth.

[0044] Working distance: During use, the connecting shaft block 21 allows connection to the coal mining machine, facilitating the fixed installation of the cutting tooth. When rotation adjustment is required, the telescopic rod 10 can extend and retract the locking block 11, moving it away from the gear 9. When the locking block 11 is away from the gear 9, the rotating frame 6 can be held by hand, and the rotating rod 5 can be used to rotate it slightly, adjusting the angle of the cutting tooth body 14. After the rotation adjustment is completed, the return force of the strong spring 12 can be used to extend and retract the telescopic rod 10, locking the locking block 11 against the gear 9, thus achieving the purpose of fixing. When it is necessary to clamp and fix the cutting tooth body 14, use a tool to clamp the first hexagonal block 16 and rotate it. The first threaded rod 15 can be rotated, and while the first threaded rod 15 is rotating, the first mating block 17 can be pushed to slide. During the sliding of the first mating block 17, the cutting tooth body 14 can be locked and fixed. The second hexagonal block 19 is locked with a tool and rotated, which can drive the second threaded rod 18 to rotate. While the second threaded rod 18 is rotating, the second mating block 20 can be pushed to slide. During the sliding of the second mating block 20, the cutting tooth body 14 can be locked and fixed. This method can also lock the cutting tooth body 14 of different specifications, and the cutting tooth body 14 can be replaced. The cutting tooth body 14 can be installed through the setting of the fixing sleeve 13, and the cutting tooth body 14 can be conveniently used for coal mining operations.

[0045] The foregoing has shown and described the basic features and main characteristics of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary cutting tooth device for a coal mining machine, comprising a mounting base (1), characterized in that: An angle adjustment mechanism (2) is provided on the upper surface of the mounting base (1). The angle adjustment mechanism (2) includes a base (3), and a mounting plate (4) is fixedly connected to the upper surface of the base (3). The outer surface of the mounting plate (4) is rotatably connected to a rotating rod (5), and the outer surface of the rotating rod (5) is fixedly connected to a rotating frame (6). The upper surface of the base (3) is provided with a groove (7), and the inner wall of the groove (7) is fixedly connected to a support rod (8). The outer surface of the support rod (8) is fixedly connected to a gear (9).

2. The rotary cutting tooth device for a coal mining machine according to claim 1, characterized in that: A telescopic rod (10) is fixedly connected to the lower surface of the rotating frame (6), and a locking block (11) is fixedly connected to one end of the telescopic rod (10). The locking block (11) is engaged with the gear (9).

3. The rotary cutting tooth device for a coal mining machine according to claim 2, characterized in that: A strong spring (12) is provided on the outer surface of the telescopic rod (10). One end of the strong spring (12) is fixedly connected to the rotating frame (6), and the other end of the strong spring (12) is fixedly connected to the locking block (11).

4. The rotary cutting tooth device for a coal mining machine according to claim 1, characterized in that: A fixed sleeve (13) is fixedly connected to the upper surface of the rotating frame (6), and a cutting tooth body (14) is provided on the inner wall of the fixed sleeve (13).

5. A rotary cutting tooth device for a coal mining machine according to claim 4, characterized in that: The outer surface of the fixed sleeve (13) is threaded with a first threaded rod (15), one end of the first threaded rod (15) is fixedly connected with a first hexagonal block (16), and one end of the first threaded rod (15) is provided with a first fitting block (17).

6. A rotary cutting tooth device for a coal mining machine according to claim 4, characterized in that: The outer surface of the fixed sleeve (13) is threaded with a second threaded rod (18), one end of the second threaded rod (18) is fixedly connected with a second hexagonal block (19), and one end of the second threaded rod (18) is provided with a second fitting block (20).

7. A rotary cutting tooth device for a coal mining machine according to claim 1, characterized in that: A connecting shaft block (21) is fixedly connected to the lower surface of the mounting base (1).

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