Assembly welding tool for roller tooth holder of coal mining machine

Abstract

The utility model discloses an assembly welding tool for a roller tooth holder of a coal mining machine, which is applied to the field of assembly welding equipment and comprises a shell, a suction fan is bolted in the shell, an activated carbon filter screen is placed in the shell, an air suction hole is formed in the top of the shell, an air outlet is formed in one side of the shell, and an air outlet is formed in the other side of the shell. A supporting base is connected to the top of the shell in a bolting mode, a positioning disc is arranged on the top of the supporting base, and a lining ring is installed in a groove in the top of the suction ventilator. The welding precision and efficiency of the tooth holder can be improved, the tooth holder is welded according to the principle that scale marks directly correspond to false teeth on the tooth holder, the welding tool is simple and practical, the complicated process that the axial height, the radial length and the installation angle of each tooth holder need to be measured before welding in the traditional technology is reduced, the auxiliary time is greatly saved, and the welding efficiency is improved. And meanwhile, the dust collecting and purifying functions can be achieved, smoke generated in the matching welding process can be treated, the body health of personnel is guaranteed, the surrounding environment is improved, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment, and in particular to welding fixtures for the drum tooth seat of a coal mining machine. Background Technology

[0002] The coal mining machine is the most important piece of equipment in a fully mechanized mining face. The coal mining machine's tooth holder is a drum component that fixes the cutting teeth, allowing for direct coal cutting. These teeth are distributed at different positions on the drum's spiral blades and end plates. The accuracy of the cutting teeth's position and spatial angle has a significant impact on the drum's service life, tooth consumption costs, and the lump coal yield.

[0003] Currently, during the welding process of the drum toothed seat, operators use simple welding fixtures and manual measurement, making it difficult to accurately verify the correct positioning of the toothed seat. This has always been a problem that plagues drum production and verification. The welding quality is poor, and it lacks dust collection and purification functions. The welding process generates fumes, which will disperse without suction. If inhaled by workers, these fumes can damage their respiratory tract, making it impractical. To solve the above problems, we propose a welding fixture for the drum toothed seat of the coal mining machine. Utility Model Content

[0004] The purpose of this utility model is to provide a welding fixture for the drum tooth seat of a coal mining machine, which solves the problems of poor accuracy and lack of dust collection and purification function of existing welding fixtures.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a welding fixture for a coal mining machine drum tooth seat, comprising a housing, a suction fan bolted inside the housing, an activated carbon filter screen placed inside the housing, a suction hole at the top of the housing, an exhaust port on one side of the housing, a support base bolted to the top of the housing, a positioning plate on the top of the support base, a bushing installed in a groove at the top of the suction fan, a steel ball fitted to the positioning plate placed on the top of the bushing, a positioning rotary shaft through the top of the positioning plate, a measuring frame fixedly sleeved on the surface of the positioning rotary shaft, a steel ruler bolted to the top of the measuring frame, a first scale on one side of the suction fan, and a second scale mounted on the top of the first scale.

[0006] The above technical solution can improve the welding accuracy and efficiency of the gear holder. The principle of directly corresponding the scale lines with the dummy teeth on the gear holder is used to weld the gear holder. It is simple and practical, and reduces the complicated process of measuring the axial height, radial length and installation angle of each gear holder before welding in the traditional process. It saves auxiliary time and effectively improves production efficiency. At the same time, it can also have a dust collection and purification function to treat the fumes generated during the welding process, protect the health of personnel, improve the surrounding environment and has high practicality.

[0007] The present invention is further configured such that: both the top and bottom of the activated carbon filter screen are fitted with a retainer, and the other side of the retainer is bolted to the inside of the housing.

[0008] By adopting the above technical solution, the activated carbon filter can be limited by the setting of the card holder, preventing the activated carbon filter from tilting when shaken after placement.

[0009] The present invention is further configured such that a dustproof net is bolted to one side of the housing, and the diameter of the dustproof net is larger than the diameter of the exhaust port.

[0010] By adopting the above technical solution, the dustproof net can play a dustproof role, preventing dust in the air from falling into the exhaust fan from the exhaust port.

[0011] The present invention is further configured such that a baffle is bolted to the front of the housing.

[0012] By adopting the above technical solution, the baffle design facilitates the replacement of the internal activated carbon filter or the cleaning of dust.

[0013] The present invention is further configured such that a dust cover is bolted to the surface of the positioning disk.

[0014] By adopting the above technical solution and setting up a dust cover, dust can be prevented from falling in through the gap between the support base and the positioning plate.

[0015] The present invention is further configured such that: a centering wheel is placed on the top of the positioning disk, and a limit pin is provided through the top of the centering wheel.

[0016] By adopting the above technical solution, the centering wheel and fixing bolts make it easy for personnel to fix the roller workpiece, so that it can rotate together with the positioning plate.

[0017] The present invention is further configured such that: a scale base is bolted to the bottom of the first scale, a guide seat is bolted to the top of the housing, a sliding plate is slidably connected to the top of the guide seat, a guide block is provided inside the guide seat, a T-bolt is welded to the top of the guide block, the other end of the T-bolt passes through and extends to the top of the sliding plate, and a nut is threaded onto the surface of the T-bolt.

[0018] By adopting the above technical solution, the first scale can be fixed by setting up the scale base, guide base, sliding plate, guide block, T-bolt and nut, and it is also convenient for personnel to move and adjust the lateral distance of the first scale.

[0019] In summary, this utility model has the following beneficial effects:

[0020] 1. This utility model first places the roller workpiece on the positioning plate and fixes it with a centering wheel. After the workpiece is fixed, a steel ruler is placed on the measuring frame and tightened with screws. After the steel ruler is fixed, the other end can extend through the first and second scales and be aligned with the leading edge of the second scale to calibrate and fine-tune the roller diameter. Then, the scale seat is pushed to the left and positioned by rotating the nut. After the scale seat is positioned, the first and second scales on its top are engraved with scale lines relative to the roller blades, which represent the cutting depth and installation angle of the cutting teeth on each tooth seat welded to the roller blades. This can improve the welding accuracy and efficiency of the tooth seats. The principle of directly corresponding the scale lines with the false teeth on the tooth seats is used to weld the tooth seats. It is simple and practical, reducing the complicated process of measuring the axial height, radial length and installation angle of each tooth seat before welding in the traditional process. It greatly saves auxiliary time and effectively improves production efficiency.

[0021] 2. This utility model utilizes a suction fan. Upon startup, the suction fan drives an internal impeller to rotate. As the impeller rotates, it draws in dust-laden gas from above through the suction holes. Once inside the housing, the dust-laden gas passes through an activated carbon filter. The activated carbon filter adsorbs and intercepts harmful substances and particulate matter in the gas. Cleaning requires opening the front baffle. This dust collection and purification function effectively treats fumes generated during welding, protecting personnel health, improving the surrounding environment, and demonstrating high practicality. Attached Figure Description

[0022] Figure 1 This is a front view of the structure of this utility model;

[0023] Figure 2 This is a front sectional view of the structure of this utility model;

[0024] Figure 3 This is a partial top view of the structure of this utility model;

[0025] Figure 4 This is a partially enlarged sectional view of the right side of the structure of this utility model;

[0026] Figure 5 This is a utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0027] Reference numerals: 1. Housing; 2. Fan; 3. Activated carbon filter; 4. Suction hole; 5. Exhaust port; 6. Support base; 7. Positioning plate; 8. Liner ring; 9. Steel ball; 10. Positioning rotary shaft; 11. Measuring frame; 12. Steel ruler; 13. First scale; 14. Second scale; 15. Card holder; 16. Dustproof net; 17. Baffle; 18. Dustproof cover; 19. Centering wheel; 20. Scale base; 21. Guide seat; 22. Sliding plate; 23. Guide block; 24. T-bolt; 25. Nut. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1:

[0030] refer to Figure 1 , Figure 2 and Figure 3 The welding fixture for the coal mining machine drum tooth seat includes a housing 1, a suction fan 2 bolted inside the housing 1, an activated carbon filter 3 placed inside the housing 1, a suction hole 4 on the top of the housing 1, an exhaust port 5 on one side of the housing 1, and a support base 6 bolted to the top of the housing 1. When the suction fan 2 is started, it drives the internal impeller to rotate. When the impeller rotates, it draws in dusty gas from above through the suction hole 4. After the dusty gas is drawn into the housing 1, it passes through the activated carbon filter 3, which adsorbs and intercepts harmful substances and particulate matter in the gas. When cleaning, the front baffle 17 needs to be opened. It has a dust collection and purification function, which can treat the fumes generated during the welding process, protect the health of personnel, improve the surrounding environment, and has high practicality.

[0031] refer to Figure 2 The activated carbon filter 3 is secured with a retainer 15 at both the top and bottom. The other side of the retainer 15 is bolted to the inside of the housing 1. The retainer 15 can limit the position of the activated carbon filter 3 and prevent it from tilting when shaken after placement.

[0032] refer to Figure 1 , Figure 2 and Figure 3 A dustproof net 16 is attached to one side of the housing 1. The diameter of the dustproof net 16 is larger than the diameter of the exhaust port 5. The dustproof net 16 can play a dustproof role and prevent dust in the air from falling into the suction fan 2 from the exhaust port 5.

[0033] refer to Figure 1 and Figure 3 A baffle 17 is bolted to the front of the housing 1. The baffle 17 makes it easy for personnel to replace the activated carbon filter 3 inside or clean the dust.

[0034] Brief description of the usage process: By starting the suction fan 2, the suction fan 2 will drive the internal impeller to rotate. When the impeller rotates, it will suck in the dust-laden gas above through the suction hole 4. After the dust-laden gas is sucked into the housing 1, it will pass through the activated carbon filter 3. The activated carbon filter 3 will adsorb and intercept harmful substances and particulate matter in the gas. When cleaning, the front baffle 17 needs to be opened.

[0035] Example 2:

[0036] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The coal mining machine drum tooth seat uses a welding fixture. A positioning plate 7 is installed on the top of the support base 6. A bushing 8 is installed in the groove on the top of the suction fan 2. A steel ball 9, which fits against the positioning plate 7, is placed on the top of the bushing 8. A positioning rotary shaft 10 is installed through the top of the positioning plate 7. A measuring frame 11 is fixedly sleeved on the surface of the positioning rotary shaft 10. A steel ruler 12 is bolted to the top of the measuring frame 11. A first scale 13 is set on one side of the suction fan 2. A second scale 14 is installed on the top of the first scale 13. The drum workpiece is first placed on the positioning plate 7 and fixed with a centering wheel 19. After the workpiece is fixed, the steel ruler 12 is placed on the measuring frame 11 and tightened with screws. After the steel ruler 12 is fixed, the other end can extend beyond the first scale. The ruler 13 and the second ruler 14 are aligned with the leading edge of the second ruler 14 to calibrate and fine-tune the roller diameter. Then, the ruler seat 20 is pushed to the left and positioned by rotating the nut 25. After the ruler seat 20 is positioned, the first ruler 13 and the second ruler 14 on its top are engraved with scale lines relative to the roller blade, which represent the cutting depth and installation angle of the cutting teeth on each tooth seat welded to the roller blade. This can improve the welding accuracy and efficiency of the tooth seats. The principle of directly corresponding the scale lines with the false teeth on the tooth seats is used to weld the tooth seats. It is simple and practical, and reduces the complicated process of measuring the axial height, radial length and installation angle of each tooth seat before welding in the traditional process. It greatly saves auxiliary time and effectively improves production efficiency.

[0037] After the first scale 13 and the second scale 14 are positioned, fitted, and tightened, the outer plane of the scale is exactly on the center plane of the sliding plate 22, the scale seat 20, and the support seat 6. This ensures that the tips of the cutting teeth are truly aligned when welding the tooth seat, guaranteeing accurate basic positioning. Furthermore, symmetrical markings and graduations are engraved on both sides of the scale, allowing the same scale to be used for welding the tooth seats on the left and right rollers of the same machine model, regardless of whether it is installed in the correct orientation. When installed in reverse, the scale also needs to be rotated 180°.

[0038] In addition, when welding the tooth holder, the dummy teeth installed on the first scale 13 and the second scale 14 are used to replace the original cutting teeth of the roller tooth holder. The positioning steps and tooth cones of the dummy teeth are the same size as the actual cutting teeth. The difference is that five-sixths of the tooth cone has been machined off, leaving only one-sixth (60°) of the tooth cone. This makes the dummy teeth much lighter and makes it easier to align the etched lines with the cone tip (tooth tip).

[0039] refer to Figure 1 and Figure 5 A dust cover 18 is bolted to the surface of the positioning plate 7. The dust cover 18 prevents dust from falling in through the gap between the support base 6 and the positioning plate 7.

[0040] refer to Figure 1 , Figure 2and Figure 3 A centering wheel 19 is placed on the top of the positioning plate 7. A limit pin is provided through the top of the centering wheel 19. The centering wheel 19 and the fixing bolt make it easy for personnel to fix the roller workpiece so that it can rotate with the positioning plate 7.

[0041] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A scale base 20 is bolted to the bottom of the first scale 13, and a guide seat 21 is bolted to the top of the housing 1. A sliding plate 22 is slidably connected to the top of the guide seat 21. A guide block 23 is provided inside the guide seat 21. A T-bolt 24 is welded to the top of the guide block 23. The other end of the T-bolt 24 passes through and extends to the top of the sliding plate 22. A nut 25 is threaded onto the surface of the T-bolt 24. Through the arrangement of the scale base 20, guide seat 21, sliding plate 22, guide block 23, T-bolt 24 and nut 25, the first scale 13 can be fixed, and it is also convenient for personnel to move and adjust the lateral distance of the first scale 13.

[0042] Brief description of the usage process: First, place the roller workpiece on the positioning plate 7 and fix it with the centering wheel 19. After the workpiece is fixed, place the steel ruler 12 on the measuring frame 11 and tighten it with screws. After the steel ruler 12 is fixed, the other end can extend through the first scale 13 and the second scale 14 and be aligned with the leading edge of the second scale 14 to calibrate and fine-tune the roller diameter. Then, push the scale seat 20 to the left and position it by rotating the nut 25. After the scale seat 20 is positioned, the first scale 13 and the second scale 14 on its top are engraved with scale lines relative to the roller blade part, which represent the cutting depth and installation angle of the cutting teeth on each tooth seat welded to the roller blade.

[0043] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A matching welding tool for a shearer drum tooth seat, comprising a shell (1), characterized in that: The inside of the shell (1) is bolted with a suction fan (2), the inside of the shell (1) is placed with an activated carbon filter screen (3), the top of the shell (1) is provided with a suction hole (4), one side of the shell (1) is provided with an exhaust port (5), the top of the shell (1) is bolted with a support seat (6), the top of the support seat (6) is provided with a positioning disc (7), the recess in the top of the suction fan (2) is mounted with a gasket (8), the top of the gasket (8) is placed with a steel ball (9) abutting the positioning disc (7), the top of the positioning disc (7) is penetrated and mounted with a positioning rotary shaft (10), the surface of the positioning rotary shaft (10) is fixedly sleeved with a measuring frame (11), the top of the measuring frame (11) is bolted with a steel ruler (12), one side of the suction fan (2) is provided with a first scale (13), the top of the first scale (13) is mounted with a second scale (14).

2. The fitting welding tool for the shearer drum tooth seat according to claim 1, characterized in that, The top and bottom of the activated carbon filter screen (3) are clamped with clamping seats (15), the other side of the clamping seat (15) is bolted with the inside of the shell (1).

3. The coal cutter drum tooth seat matching welding tool according to claim 1, characterized in that, One side of the shell (1) is bolted with a dust screen (16), the diameter of the dust screen (16) is greater than the diameter of the exhaust port (5).

4. The coal cutter drum tooth seat matching welding tool according to claim 1, characterized in that, The front of the shell (1) is bolted with a baffle (17).

5. The coal cutter drum tooth seat matching welding tool according to claim 1, characterized in that, The surface of the positioning disc (7) is bolted with a dust cover (18).

6. The coal cutter drum tooth seat welding assembly jig according to claim 1, characterized in that, The top of the positioning disc (7) is placed with a centering wheel (19), the top of the centering wheel (19) is penetrated and provided with a limiting pin.

7. The coal cutter drum tooth seat welding assembly jig according to claim 1, characterized in that, The bottom of the first scale (13) is bolted with a scale seat (20), the top of the shell (1) is bolted with a guide seat (21), the top of the guide seat (21) is slidingly connected with a sliding plate (22), the inside of the guide seat (21) is provided with a guide block (23), the top of the guide block (23) is welded with a T-shaped bolt (24), the other end of the T-shaped bolt (24) penetrates and extends to the top of the sliding plate (22), the surface of the T-shaped bolt (24) is threadedly connected with a nut (25).

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