A multi-disc cutter combined cantilever type tunneling machine working mechanism

Abstract

A kind of multi-disc cutter combined cantilever type heading machine working mechanism belongs to coal mine machinery technical field.Utilize multi-disc combined form, through the arrangement of multiple disc along axial staggered, equidistant arrangement in circumferential direction, while multiple disc cutter revolution, rotation, vibration, with cantilever swing linear feed compound motion cutting, effectively improve the coal rock crushing efficiency.Mechanical vibration type disc cutter mechanism is installed in the center position of rotary disc, three axial self-adapting cutting displacement adjustment type disc cutter mechanism is evenly distributed on the rotary disc around the center position of rotary disc, mechanical vibration type disc cutter mechanism and three axial self-adapting cutting displacement adjustment type disc cutter mechanism are staggered along axial direction, permanent magnet motor drives rotary disc, and can realize the revolution of mechanical vibration type disc cutter and three axial self-adapting cutting displacement adjustment type disc cutter.The present application has the advantages of reducing production cost, saving support time, and the heading efficiency is improved by more than 60%.

Description

Technical Field

[0001] This invention belongs to the field of coal mining machinery technology, specifically relating to a working mechanism for a multi-disc cutter combination cantilever tunneling machine. Background Technology

[0002] The coal industry is a vital foundational industry in China, playing an indispensable role in the country's national economic development. With increasing coal mining output, the difficulty of coal extraction has also gradually increased. For the sustainable development of the coal mining industry, it is necessary to utilize even the most difficult-to-mine coal seams. For these seams, the hardness of the material being cut has significantly increased. The damage to traditional mining machinery caused by cutting hard coal and rock cannot be ignored, potentially leading to the direct scrapping of equipment. Therefore, the development of a tunneling mechanism suitable for efficiently breaking coal and rock is urgently needed. Thus, inventing a multi-disc cutter combination cantilever tunneling machine working mechanism has significant application value and research significance. Summary of the Invention

[0003] The purpose of this invention is to provide a working mechanism for a multi-disc cutter combination cantilever tunneling machine. By using a multi-disc combination, the multi-discs are arranged in a staggered manner along the axial direction and equidistantly around the circumference. At the same time, the multi-disc cutters rotate, vibrate, and move in a linear feed motion with the swing of the cantilever to cut, which effectively improves the efficiency of coal and rock crushing.

[0004] The technical solution adopted in this invention is: a multi-disc cutter combination cantilever tunneling machine working mechanism, including a mechanically vibrating disc cutter mechanism, a rotary disc, a permanent magnet motor, and three axially adaptive cutting displacement adjusting disc cutter mechanisms; the mechanically vibrating disc cutter mechanism is installed at the center of the rotary disc, and the three axially adaptive cutting displacement adjusting disc cutter mechanisms are evenly distributed around the center of the rotary disc, and the mechanically vibrating disc cutter mechanism and the three axially adaptive cutting displacement adjusting disc cutter mechanisms are staggered along the axial direction; the permanent magnet motor drives the rotary disc, which can realize the rotation of the mechanically vibrating disc cutter and the three axially adaptive cutting displacement adjusting disc cutter.

[0005] Compared with the prior art, the present invention has the following advantages:

[0006] 1. This invention provides a combined multi-disc system consisting of three identical discs arranged axially in a staggered and circumferentially equidistant manner, which improves tunneling efficiency by more than 60% compared to a single disc.

[0007] 2. The permanent magnet motor of this invention drives a rotary disc through a gear coupling, which can realize the rotation of mechanically vibrating disc cutters and three axial adaptive cutting displacement adjusting disc cutters, improving tunneling efficiency by more than 60%.

[0008] 3. The hydraulic motor of this invention drives the drive shaft and the variable angle plane gear to rotate. The variable angle plane gear drives the eccentric block to rotate. Based on the principle of eccentric block rotation vibration, the axial vibration of the mechanically excited disc cutter mechanism can be realized through the eccentric block and the disc spring, which improves the tunneling efficiency by more than 60%.

[0009] 4. The permanent magnet motor of this invention drives three axial adaptive cutting displacement adjustable disc cutters to rotate through a rotary gear transmission system, improving tunneling efficiency by more than 60%.

[0010] 5. This invention achieves cutting displacement adjustment through the self-balancing of a ring spring and external load, improving tunneling efficiency by more than 60%.

[0011] 6. The multi-disc cutter provided by this invention can independently achieve rotation, rotation, and vibration, or it can cut by a composite motion of linear feed with cantilever swing in all three cases. The cutting mode is adjustable, and the efficiency of tunneling in complex coal seams is increased by 60%.

[0012] 7. In this invention, the telescopic hydraulic cylinder, telescopic sleeve, and protective sleeve are concentrically arranged inside the inner telescopic mechanism housing, which improves tunneling efficiency by more than 60%.

[0013] 8. The present invention has a reliable structure, is easy to implement, and can cut hard rock. It is applicable to coal mine roadway excavation and rock tunnel excavation, and has the advantages of reducing production costs, saving support time, and increasing excavation efficiency by more than 60%. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 yes Figure 1 AA section diagram;

[0016] Figure 3 yes Figure 1 A schematic diagram of direction B;

[0017] Figure 4 This is a CC section view of Sa3;

[0018] Figure 5 This is a schematic diagram of the specific transmission of the rotary gear transmission system of the present invention;

[0019] The components include: 1. Mechanically vibrating disc cutter; 2. Axially adaptive cutting displacement adjusting disc cutter; 3. Rotary disc; 4. Permanent magnet motor; 5. Hydraulic motor; 6. Drive shaft; 7. Rotary gear transmission system; 71. First gear; 72. Second gear; 73. Third gear; 74. Rotating frame; 75. Internal ring gear; 76. Connecting shaft; 8. Eccentric block; 9. Variable angle planar gear; 10. Coupling; 11. Butterfly spring; 12. Ring spring; 13. Spiral spline; 14. Gear coupling; 141. Drive gear; 142. Driven gear; 15. Telescopic hydraulic cylinder; 16. Telescopic sleeve; 17. Protective sleeve; 18. Inner telescopic mechanism housing; 19. Sleeve; 20. Rotating shaft. Detailed Implementation

[0020] To better understand the purpose, structure, and function of this invention, the invention will be described in further detail below with reference to the accompanying drawings.

[0021] Reference Figures 1-5 As shown, the working mechanism of a multi-disc cutter combination cantilever tunneling machine of the present invention includes a mechanically vibrating disc cutter 1, a rotary disk 3, a permanent magnet motor 4, and three axially adaptive cutting displacement adjusting disc cutters 2. The mechanically vibrating disc cutter 1 is installed at the center of the rotary disk 3, and the three axially adaptive cutting displacement adjusting disc cutters 2 are evenly distributed around the center of the rotary disk 3. The mechanically vibrating disc cutter 1 and the three axially adaptive cutting displacement adjusting disc cutters 2 are staggered along the axial direction. The permanent magnet motor 4 drives the rotary disk 3, which enables the rotation of the mechanically vibrating disc cutter 1 and the three axially adaptive cutting displacement adjusting disc cutters 2.

[0022] like Figure 1 , Figure 5 As shown, a central slot is opened at the rear end of the rotary disk 3, and a gear coupling 14 is provided between the rear end of the inner side wall of the central slot of the rotary disk 3 and the output shaft of the permanent magnet motor 4. The permanent magnet motor 4 drives the rotary disk 3 through the gear coupling 14.

[0023] like Figure 5 As shown, the gear coupling 14 includes a drive gear 141 and a driven gear 142; the drive gear 141 is mounted on the output shaft of the permanent magnet motor 4, and the driven gear 142 is formed by annularly arranged teeth integrally provided on the rear end of the inner sidewall of the central slot of the rotary disk 3, and the driven gear 142 is meshed with the drive gear 141.

[0024] The permanent magnet motor 4 drives the drive gear 141 to rotate, and the drive gear 141 drives the rotary disk 3 to rotate through the driven gear 142.

[0025] like Figure 5As shown, the rear end shell of the rotary disk 3 is rotatably connected to the sleeve 19, and the sleeve 19 is fitted on the outside of the permanent magnet motor 4 and connected to the hydraulic motor 5.

[0026] like Figure 1 As shown, the central shaft of the permanent magnet motor 4 is a hollow shaft; a hydraulic motor 5 is provided at the rear end of the permanent magnet motor 4, and a drive shaft 6 connected to the hydraulic motor 5 passes through the hollow shaft of the permanent magnet motor 4 and is connected to the vibration component installed on the mechanically vibrating disc cutter 1. The drive shaft 6 transmits the power of the hydraulic motor 5 to the vibration component to realize the vibration of the mechanically vibrating disc cutter 1.

[0027] like Figure 4 As shown, the vibration assembly includes a variable-angle planar gear 9, a disc spring 11, a rotating shaft 20, and two eccentric blocks 8. The portion of the rear end of the mechanically vibrating disc cutter 1 that inserts into the front mounting groove of the rotating disk 3 has an annular protrusion and an inner cavity. Multiple disc springs 11 are provided at both ends of the annular protrusion and between them and the front mounting groove of the rotating disk 3. The rotating shaft 20 is rotatably mounted in the inner cavity of the rear end of the mechanically vibrating disc cutter 1 via bearings. The two eccentric blocks 8 are parallel vertically and eccentrically fixed to the rotating shaft 20. The two eccentric blocks 8 each have planar ring teeth coaxial with the rotating shaft 20 on their opposite planes. The variable angle planar gear 9 is vertically arranged between the two eccentric blocks 8 and meshes with the two planar ring teeth. The front end of the drive shaft 6 is connected to the axle of the variable angle planar gear 9 through the coupling 10. The rear end of the drive shaft 6 is connected to the output shaft of the hydraulic motor 5. The hydraulic motor 5 drives the eccentric blocks 8 to rotate through the drive shaft 6 and the variable angle planar gear 9. The mechanically excited disc cutter 1 can be vibrated through the eccentric blocks 8 and the disc spring 11.

[0028] like Figure 1 , Figure 5 As shown, the permanent magnet motor 4 drives the three axial adaptive cutting displacement adjustable disc cutters 2 to rotate through the rotary gear transmission system 7.

[0029] like Figure 5 As shown, the rotary gear transmission system 7 includes a second gear 72, a rotating frame 74, three third gears 73, and multiple first gears 71. The rotating frame 74 is rotatably mounted on the drive shaft 6. The multiple first gears 71 are evenly distributed and mounted on the rotating frame 74. The inner sidewall of the central slot of the rotary disk 3 is provided with an inner ring gear 75. The multiple first gears 71 are all meshed with the inner ring gear 75. The second gear 72 is rotatably mounted on the drive shaft 6. The three third gears 73 are all meshed with the second gear 72, and the three third gears 73 are respectively fixed on corresponding connecting shafts 76. The three connecting shafts 76 are connected one-to-one with the three axial adaptive cutting displacement adjustable disc cutters 2.

[0030] The rotary disc 3 drives the first gear 71 to rotate. The rotating frame 74 rotates with the first gear 71, driving the second gear 72. The second gear 72 meshes with the third gear 73, transmitting power to the axial adaptive cutting displacement adjustable disc cutter 2, thereby realizing the rotation of the axial adaptive cutting displacement adjustable disc cutter 2.

[0031] like Figure 4 As shown, each of the axial adaptive cutting displacement adjustable disc cutters 2 has a central hole in its shank and a spline at the rear end of the central hole. The front end of the connecting shaft 76 is fixedly connected to the rear end of the helical spline 13. The front end of the helical spline 13 is connected to the axial adaptive cutting displacement adjustable disc cutter 2 via the spline. A ring spring 12 is provided between the helical spline 13 and the front end of the central hole of the axial adaptive cutting displacement adjustable disc cutter 2. The axial adaptive cutting displacement adjustable disc cutter 2 achieves cutting displacement adjustment by self-balancing with the external load through the ring spring 12.

[0032] like Figure 1 As shown, the working mechanism of the multi-disc cutter combination cantilever tunneling machine also includes a telescopic hydraulic cylinder 15, a telescopic sleeve 16, a protective sleeve 17, and an inner telescopic mechanism housing 18; the cylinder body of the telescopic hydraulic cylinder 15 is fixed inside the inner telescopic mechanism housing 18, and the telescopic sleeve 16 and the protective sleeve 17 are concentrically fitted onto the telescopic end of the telescopic hydraulic cylinder 15 from the inside to the outside, and the front end of the protective sleeve 17 is connected to the rear end of the hydraulic motor 5, so that the telescopic end of the telescopic hydraulic cylinder 15 drives the hydraulic motor 5 to feed linearly.

[0033] Multi-disc cutting tool uses a composite motion of rotation, self-rotation, vibration, and linear feed following the cantilever swing for cutting.

[0034] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A working mechanism for a multi-disc cutter combination cantilever tunneling machine, characterized in that: The system includes a mechanically vibrating disc cutter (1), a rotating disk (3), a permanent magnet motor (4), and three axially adaptive cutting displacement adjustable disc cutters (2). The mechanically vibrating disc cutter (1) is installed at the center of the rotating disk (3). The three axially adaptive cutting displacement adjustable disc cutters (2) are evenly distributed around the center of the rotating disk (3). The mechanically vibrating disc cutter (1) and the three axially adaptive cutting displacement adjustable disc cutters (2) are staggered along the axial direction. The permanent magnet motor (4) drives the rotating disk (3), enabling the rotation of the mechanically vibrating disc cutter (1) and the three axially adaptive cutting displacement adjustable disc cutters (2). The central shaft of the permanent magnet motor (4) is a hollow shaft; a hydraulic motor (5) is provided at the rear end of the permanent magnet motor (4), and a drive shaft (6) connected to the hydraulic motor (5) passes through the hollow shaft of the permanent magnet motor (4) and is connected to the vibration component mounted on the mechanically vibrating disc cutter (1). The drive shaft (6) transmits the power of the hydraulic motor (5) to the vibration component to realize the vibration of the mechanically vibrating disc cutter (1). The vibration assembly includes a variable-angle planar gear (9), a butterfly spring (11), a rotating shaft (20), and two eccentric blocks (8); the part of the tool holder of the mechanically vibrating disc cutter (1) that is inserted into the front mounting groove of the rotary disk (3) has an annular protrusion and an inner cavity. Multiple butterfly springs (11) are provided at both ends of the annular protrusion and the front mounting groove of the rotary disk (3). The rotating shaft (20) is rotatably mounted in the inner cavity of the tool holder of the mechanically vibrating disc cutter (1) through a bearing. The two eccentric blocks (8) are parallel vertically and eccentrically fixed on the rotating shaft (20). On the opposite plane of the block (8), there are planar ring teeth coaxial with the rotating shaft (20). The variable angle planar gear (9) is vertically arranged between the two eccentric blocks (8) and meshes with the two planar ring teeth. The front end of the drive shaft (6) is connected to the axle of the variable angle planar gear (9) through the coupling (10). The rear end of the drive shaft (6) is connected to the output shaft of the hydraulic motor (5). The hydraulic motor (5) drives the eccentric block (8) to rotate through the drive shaft (6) and the variable angle planar gear (9). The mechanically excited disc cutter (1) can be vibrated through the eccentric block (8) and the disc spring (11).

2. The working mechanism of a multi-disc cutter combination cantilever tunneling machine according to claim 1, characterized in that: The rotary disk (3) has a central slot at its rear end. A gear coupling (14) is provided between the rear end of the inner side wall of the central slot of the rotary disk (3) and the output shaft of the permanent magnet motor (4). The permanent magnet motor (4) drives the rotary disk (3) through the gear coupling (14).

3. The working mechanism of a multi-disc cutter combination cantilever tunneling machine according to claim 2, characterized in that: The gear coupling (14) includes a drive gear (141) and a driven gear (142); the drive gear (141) is mounted on the output shaft of the permanent magnet motor (4), and the inner sidewall of the central slot of the rotary disk (3) is integrally provided with annularly arranged teeth to form the driven gear (142), and the driven gear (142) meshes with the drive gear (141).

4. The working mechanism of a multi-disc cutter combination cantilever tunneling machine according to claim 1, characterized in that: The permanent magnet motor (4) drives the three axial adaptive cutting displacement adjustable disc cutters (2) to rotate through the rotary gear transmission system (7).

5. The working mechanism of a multi-disc cutter combination cantilever tunneling machine according to claim 4, characterized in that: The rotary gear transmission system (7) includes a second gear (72), a rotating frame (74), three third gears (73) and multiple first gears (71); the rotating frame (74) is rotatably mounted on the drive shaft (6), the multiple first gears (71) are evenly distributed and mounted on the rotating frame (74), the inner sidewall of the central slot of the rotary disk (3) is provided with an inner ring gear (75), the multiple first gears (71) are all meshed with the inner ring gear (75), the second gear (72) is rotatably mounted on the drive shaft (6), the three third gears (73) are all meshed with the second gear (72), and the three third gears (73) are respectively fixed on the corresponding connecting shafts (76), the three connecting shafts (76) are connected one-to-one with the three axial adaptive cutting displacement adjusting disc cutters (2).

6. The working mechanism of a multi-disc cutter combination cantilever tunneling machine according to claim 5, characterized in that: Each of the axial adaptive cutting displacement adjustable disc cutter (2) has a central hole in its shank and a spline at the rear end of the central hole. The front end of the connecting shaft (76) is fixedly connected to the rear end of the helical spline (13). The front end of the helical spline (13) is connected to the axial adaptive cutting displacement adjustable disc cutter (2) through the spline. A ring spring (12) is provided between the helical spline (13) and the front end of the central hole of the axial adaptive cutting displacement adjustable disc cutter (2). The axial adaptive cutting displacement adjustable disc cutter (2) achieves cutting displacement adjustment by self-balancing with the external load through the ring spring (12).

7. The working mechanism of a multi-disc cutter combination cantilever tunneling machine according to claim 4, characterized in that: The working mechanism of the multi-disc cutter combination cantilever tunneling machine also includes a telescopic hydraulic cylinder (15), a telescopic sleeve (16), a protective sleeve (17), and an inner telescopic mechanism housing (18). The cylinder body of the telescopic hydraulic cylinder (15) is fixed inside the inner telescopic mechanism housing (18). The telescopic sleeve (16) and the protective sleeve (17) are concentrically fitted on the telescopic end of the telescopic hydraulic cylinder (15) from the inside to the outside. The front end of the protective sleeve (17) is connected to the rear end of the hydraulic motor (5), so that the telescopic end of the telescopic hydraulic cylinder (15) drives the hydraulic motor (5) to feed linearly.

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