Cutting pick anti-breaking device of coal mining machine

Abstract

The utility model relates to the technical field of coal mining machines, and discloses a coal mining machine cutting pick anti-breaking device which comprises a cutter head, a mounting seat is fixedly connected to the outer wall of the cutter head, a mounting block is slidably connected to the interior of the mounting seat, a tooth sleeve is fixedly connected to the top end of the mounting block, a cushioning pad is arranged on the outer wall of the tooth sleeve, and a tooth cutter is fixedly connected to the interior of the tooth sleeve. A second clamping block is slidably connected to the interior of the mounting base, a first clamping block is slidably connected to the interior of the mounting base, the first clamping block and the second clamping block are slidably connected to the outer wall of the mounting block, and a two-way screw rod is in threaded connection with the interior of the first clamping block and the interior of the second clamping block. According to the cutting pick, the mounting block is clamped and fixed through the clamping block, the cutting pick is buffered through the spring and the cushioning pad, the effect of effectively preventing the cutting pick from falling off is achieved, the problems that the cutting pick vibrates when making contact with coal, and the cutting pick falls off during high-load work are solved, and the stability of the cutting pick is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machines, in particular to a pick-teeth anti-breaking device for coal mining machines. Background Art

[0002] Coal mining machine is a kind of mechanical equipment specially used for coal mining, mainly used for coal mining in underground or open-pit mines, and picks are important parts used in coal mining machines, tools used for cutting and processing coal or similar hard rocks. They are usually designed as high-strength and wear-resistant tools to cope with the working environment of coal mining machines in underground or open-pit coal mines. The main function of these tools is to cut and crush coal or rocks to facilitate the extraction and transportation of coal or ore, playing a key role in coal mining and rock excavation;

[0003] Traditional coal mining machine picks usually consist of a pick head, a fixing seat and fixing bolts. The pick head is the part that directly contacts and cuts coal or rock, and is used to cut and crush coal or rock. The fixing seat is used to connect and stabilize the pick head to ensure that the pick can be installed on the coal mining machine cutter head. The fixing bolts are fixed to the fixing seat through pre-designed mounting holes.

[0004] However, the traditional coal mining machine picks are only installed and fixed by bolts. During use, when the pick contacts the coal, it will vibrate. The fixed bolts alone cannot effectively buffer the impact force on the pick, which may cause the pick to fall off when working under high load. Therefore, a coal mining machine pick anti-breakage device is proposed to solve the above problem. Utility Model Content

[0005] In order to remedy the above deficiencies, the utility model provides a coal mining machine pick anti-breakage device, aiming to improve the problem in the prior art that the pick will vibrate when it contacts the coal, cannot effectively buffer the impact force on the pick, and may cause the pick to fall off when working under high load.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The coal mining machine pick anti-breaking device comprises a cutter disc, the outer wall of the cutter disc is fixedly connected with a mounting seat, the mounting seat is slidably connected with a mounting block, the top of the mounting block is fixedly connected with a gear sleeve, the outer wall of the gear sleeve is provided with a shock-absorbing pad, a toothed cutter is fixedly connected inside the gear sleeve, a clamping block 2 is slidably connected inside the mounting seat, a clamping block 1 is slidably connected inside the mounting seat, the clamping block 1 and the clamping block 2 are both slidably connected to the outer wall of the mounting block, the clamping block 1 and the clamping block 2 are internally threadedly connected with a bidirectional screw, the outer wall of the bidirectional screw is threadedly connected with a nut, the clamping block 1 and the clamping block 2 are internally slidably connected with a connecting column, the outer wall of the connecting column is provided with a buffer component, and the buffer component is used to buffer the pick;

[0008] As a further description of the above technical solution:

[0009] The buffer assembly includes a spring, the spring is sleeved on the outer wall of the connecting column, one end of the spring is fixedly connected to the inside of the first clamping block, and the other end of the spring is fixedly connected to the inside of the second clamping block;

[0010] As a further description of the above technical solution:

[0011] The bottom of the cutter disc is fixedly connected to a motor, and the output end of the motor is fixedly connected to a driving wheel;

[0012] As a further description of the above technical solution:

[0013] The driving wheel is rotatably connected to the inside of the cutter disc, the inside of the cutter disc is rotatably connected to a driven wheel, and a synchronous belt is provided between the driving wheel and the driven wheel;

[0014] As a further description of the above technical solution:

[0015] The top end of the driven wheel is fixedly connected to a rotating column, and the interior of the rotating column is slidably connected to a telescopic column;

[0016] As a further description of the above technical solution:

[0017] The top of the telescopic column is fixedly connected to a turntable, and the inside of the turntable is fixedly connected to a fixed pipe;

[0018] As a further description of the above technical solution:

[0019] The bottom of the cutter disc is fixedly connected with a cylinder, and the output end of the cylinder is fixedly connected with a support column;

[0020] As a further description of the above technical solution:

[0021] One end of the telescopic column is fixedly connected to the outer wall of the support column, and one end of the fixed pipe is fixedly connected to a spray head.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the mounting block is locked and fixed by rotating the bidirectional screw to make the clamping block 1 and the clamping block 2, and the pick is buffered by the spring and the shock-absorbing pad, so that the pick can be effectively prevented from falling off, and the problem that the pick will vibrate when it contacts the coal and the impact force on the pick cannot be effectively buffered, which will cause the pick to fall off when working under high load, thereby improving the stability of the pick.

[0024] 2. In the utility model, with the cooperation of the driving wheel and the driven wheel, the synchronous belt, the rotating column, the telescopic column and the fixed pipe structure, the nozzle works to achieve the effect of cooling the pick, thereby solving the problem that the pick cannot be effectively cooled during the processing, which will cause the pick to overheat when working under high load and affect the life and performance of the pick, thereby increasing the service life of the pick. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of the coal mining machine pick anti-breakage device proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the outer wall structure of the tooth sleeve of the coal mining machine pick anti-breakage device proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the mounting base of the pick anti-breaking device for a coal mining machine proposed in the utility model;

[0028] Figure 4 This is a schematic diagram of the cutter head bottom structure of the coal mining machine pick anti-breakage device proposed by the utility model;

[0029] Figure 5 The utility model is a schematic diagram of the internal structure of the rotary table of the coal mining machine pick anti-breakage device.

[0030] Legend:

[0031] 1. Cutter disc; 2. Mounting seat; 3. Mounting block; 4. Gear sleeve; 5. Shock-absorbing pad; 6. Block 1; 7. Block 2; 8. Bidirectional screw; 9. Nut; 10. Connecting column; 11. Spring; 12. Toothed knife; 13. Motor; 14. Driving wheel; 15. Driven wheel; 16. Synchronous belt; 17. Rotating column; 18. Turntable; 19. Fixed pipe; 20. Cylinder; 21. Support column; 22. Telescopic column; 23. Nozzle. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-Figure 3 The utility model provides an embodiment: a coal mining machine pick anti-breaking device, comprising a cutter disc 1, a mounting seat 2 is fixedly connected to the outer wall of the cutter disc 1, a mounting block 3 is slidably connected inside the mounting seat 2, a gear sleeve 4 is fixedly connected to the top of the mounting block 3, a shock-absorbing pad 5 is arranged on the outer wall of the gear sleeve 4, a toothed cutter 12 is fixedly connected inside the gear sleeve 4, a clamping block 2 is slidably connected inside the mounting seat 2, a clamping block 1 is slidably connected inside the mounting seat 2, and the clamping block 1 6 is slidably connected inside the mounting seat 2, the clamping block 1 6 and the clamping block 2 7 are both slidably connected to the outer wall of the mounting block 3, the clamping block 1 6 and the clamping block 2 7 are internally threadedly connected with a bidirectional screw 8, the outer wall of the bidirectional screw 8 is threadedly connected with a nut 9, the clamping block 1 6 and the clamping block 2 7 are internally slidably connected with a connecting column 10, the outer wall of the connecting column 10 is provided with a buffer assembly, the buffer assembly is used to buffer the pick, and the buffer assembly comprises a spring 11, the spring 11 is sleeved on the outer wall of the connecting column 10, one end of the spring 11 is fixedly connected to the inside of the clamping block 1 6, and the other end of the spring 11 is fixedly connected to the inside of the clamping block 2 7.

[0034] Specifically, when installing the pick, first insert the mounting block 3 at the bottom of the pick into the mounting seat 2, and then adjust the position of the clamping block 1 6 and the clamping block 2 7 by twisting the bidirectional screw 8, so that they clamp the mounting block 3 and ensure that it is firmly fixed in the mounting seat 2. The movement of the clamping block 1 6 and the clamping block 2 7 will also compress the spring 11 to enhance the fixing effect. Then, tighten the nut 9 to ensure that the clamping block 1 6 and the clamping block 2 7 are firmly fixed. At the same time, the shock-absorbing pad 5 on the outer wall of the pick tooth sleeve 4 slides inside the mounting seat 2. Through the action of the spring 11 and the shock-absorbing pad 5, the impact force on the pick during operation is effectively reduced, thereby preventing the pick from falling off and breaking, and ensuring the stable operation and long-term use of the coal mining machine under harsh working conditions.

[0035] Reference Figure 1 , Figure 4 and Figure 5 A telescopic column 22 is slidably connected inside the rotating column 17, a turntable 18 is fixedly connected to the top of the telescopic column 22, a fixed tube 19 is fixedly connected inside the turntable 18, a cylinder 20 is fixedly connected to the bottom of the cutter disc 1, a support column 21 is fixedly connected to the output end of the cylinder 20, and one end of the telescopic column 22 is fixedly connected to the outer wall of the support column 21.

[0036] Specifically, during the working process of the cutting tooth, the cylinder 20 drives the support column 21 to slide inside the driven wheel 15 through its output end. Under the action of the force, the support column 21 drives the telescopic column 22 connected to the outer wall to slide inside the rotating column 17, and at the same time, the turntable 18 connected to the top end rises and slides out from the outer wall of the cutter disc 1, achieving the lifting effect.

[0037] Reference Figure 4 and Figure 5 A motor 13 is fixedly connected to the bottom of the cutter disc 1, a driving wheel 14 is fixedly connected to the output end of the motor 13, the driving wheel 14 is rotatably connected to the inside of the cutter disc 1, a driven wheel 15 is rotatably connected to the inside of the cutter disc 1, a synchronous belt 16 is provided between the driving wheel 14 and the driven wheel 15, a rotating column 17 is fixedly connected to the top of the driven wheel 15, and a nozzle 23 is fixedly connected to one end of the fixed pipe 19.

[0038] Specifically, the nozzle 23 installed inside the rotating disk 18 then starts to spray water to cool the pick. At the same time, the output end of the motor 13 drives the driving wheel 14 to rotate, and the driving wheel 14 drives the driven wheel 15 to operate synchronously through the synchronous belt 16 on the outer wall. The rotation of the driven wheel 15 drives the rotating column 17 connected to the top to rotate, and the power transmission of the rotating column 17 causes the internal telescopic column 22 to start rotating. The rotation of the telescopic column 22 further drives the rotating disk 18 and the nozzle 23 to perform comprehensive rotation spraying, ensuring that the surface of the pick is evenly cooled, achieving the effect of cooling the pick.

[0039] Working principle: when installing the pick, first insert the mounting block 3 connected to the bottom of the pick into the mounting seat 2, then turn the bidirectional screw 8 to drive the block 1 6 and the block 2 7 connected to the outer wall to move in relative directions, and through the movement of the block 1 6 and the block 2 7, the mounting block 3 is clamped, and the outer wall of the mounting block 3 is stuck inside the block 1 6 and the block 2 7 to prevent the pick from falling off. At the same time, in this process, the block 1 6 and the block 2 7 will also squeeze the spring 11 to move, and then tighten the nut 9 on the side of the block 1 6 and the block 2 7 to complete the fixation, and the shock-absorbing pad 5 on the outer wall of the tooth sleeve 4 will slide inside the mounting seat 2, and through the action of the spring 11 and the shock-absorbing pad 5, the pick can buffer a certain impact force during work, thereby achieving the effect of preventing the pick from falling off and breaking. During the work of the pick, The output end of the cylinder 20 drives the support column 21 to slide inside the driven wheel 15, and the support column 21 is forced to drive the telescopic column 22 connected to the outer wall to slide inside the rotating column 17. At the same time, the support column 21 and the telescopic column 22 drive the turntable 18 connected to the top to rise, so that it slides out of the outer wall of the cutter disc 1, so that the nozzle 23 inside the turntable 18 sprays water to cool the pick. At the same time, the output end of the motor 13 drives the driving wheel 14 to rotate, and the driving wheel 14 drives the driven wheel 15 to rotate synchronously through the synchronous belt 16 on the outer wall. The driven wheel 15 drives the rotating column 17 connected to the top to rotate, and the rotating column 17 is forced to drive the telescopic column 22 connected to the inside to rotate, so that the telescopic column 22 drives the turntable 18 and the nozzle 23 to rotate, and then the pick is fully sprayed, thereby achieving the effect of cooling the pick.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for preventing pick teeth from breaking off of a coal mining machine, comprising a cutter head (1), characterized in that: The outer wall of the cutter disc (1) is fixedly connected to a mounting seat (2), and a mounting block (3) is slidably connected inside the mounting seat (2). A gear sleeve (4) is fixedly connected to the top of the mounting block (3), and a shock-absorbing pad (5) is provided on the outer wall of the gear sleeve (4). A toothed cutter (12) is fixedly connected inside the gear sleeve (4), and a second clamping block (7) is slidably connected inside the mounting seat (2). A first clamping block (6) is slidably connected inside the mounting seat (2). Both the first clamping block (6) and the second clamping block (7) are slidably connected to the outer wall of the mounting block (3). A bidirectional screw (8) is threadedly connected inside the first clamping block (6) and the second clamping block (7), and a nut (9) is threadedly connected on the outer wall of the bidirectional screw (8). A connecting column (10) is slidably connected inside the first clamping block (6) and the second clamping block (7), and a buffer component is provided on the outer wall of the connecting column (10), and the buffer component is used to buffer the cutting teeth.

2. The coal mining machine pick anti-breakage device according to claim 1, characterized in that: The buffer assembly comprises a spring (11), wherein the spring (11) is sleeved on the outer wall of the connecting column (10), one end of the spring (11) is fixedly connected to the inside of the first clamping block (6), and the other end of the spring (11) is fixedly connected to the inside of the second clamping block (7).

3. The coal mining machine pick anti-breakage device according to claim 1, characterized in that: The bottom of the cutter disc (1) is fixedly connected to a motor (13), and the output end of the motor (13) is fixedly connected to a driving wheel (14).

4. The coal mining machine pick anti-breakage device according to claim 3, characterized in that: The driving wheel (14) is rotatably connected to the inside of the cutter disc (1), and a driven wheel (15) is rotatably connected to the inside of the cutter disc (1), and a synchronous belt (16) is provided between the driving wheel (14) and the driven wheel (15).

5. The coal mining machine pick anti-breakage device according to claim 4, characterized in that: The top end of the driven wheel (15) is fixedly connected to a rotating column (17), and a telescopic column (22) is slidably connected inside the rotating column (17).

6. The coal mining machine pick anti-breakage device according to claim 5, characterized in that: The top end of the telescopic column (22) is fixedly connected to a rotating disk (18), and the interior of the rotating disk (18) is fixedly connected to a fixed pipe (19).

7. The coal mining machine pick anti-breakage device according to claim 6, characterized in that: The bottom of the cutter disc (1) is fixedly connected to a cylinder (20), and the output end of the cylinder (20) is fixedly connected to a support column (21).

8. The coal mining machine pick anti-breakage device according to claim 7, characterized in that: One end of the telescopic column (22) is fixedly connected to the outer wall of the support column (21), and one end of the fixed pipe (19) is fixedly connected to a nozzle (23).

Images