A multi-disc cutter coal-rock crushing mechanism with hydraulic cylinder rotating and swinging cutting

Abstract

The present invention proposes a multi-disc cutter coal-rock crushing mechanism with hydraulic cylinder rotary swing cutting, which belongs to the field of mining equipment. The coal-rock crushing mechanism includes a box body, a spline shaft, a positioning sleeve, a cutter shaft, a cutter head, an end cover, an inner screw, a threaded piston, etc. The mechanism adopts a multi-disc cutter structure, uses a hydraulic cylinder to realize the feed movement of the cutter head, and cuts coal and rock by rotary swing cutting. The mechanism has a simple principle, a reliable structure, and is easy to implement. It can realize cutting hard rock and is suitable for fields such as coal mine tunnel excavation and rock tunnel excavation. It has the characteristics of high excavation efficiency and easy maintenance.

Description

Technical Field

[0001] The invention relates to the field of mining equipment, in particular to a multi-disc cutter coal and rock crushing mechanism for cutting with a hydraulic cylinder rotating and swinging. Technical Background

[0002] In the coal industry's programmatic document "Several Opinions on Promoting the Healthy Development of the Coal Industry", at the National Coal Industry Science and Technology Conference, and in the coal industry structural adjustment policies issued by the National Development and Reform Commission, the development of large-scale coal underground comprehensive coal mining equipment and other contents are involved. Excavation and mining are important production links in coal mine production. The national policy is: mining and excavation are equally important, and excavation comes first. Rapid excavation of coal mine tunnels is a key technical measure for coal mines to ensure high and stable production of mines. Efficient mechanized excavation is one of the necessary conditions to ensure high production and efficiency of mines, and it is also the development direction of tunnel excavation technology. The main excavation machinery in my country's efficient excavation of coal tunnels is the cantilevered tunnel boring machine. The cantilevered tunnel boring machine integrates the functions of cutting, loading, walking, and operation, and is mainly used to cut underground rock, coal or semi-coal rock tunnels with any cross-section. At present, the domestic tunnel boring machine design can basically meet domestic needs, but there is still a certain distance from international advanced technology. In addition, the current domestic rock tunnel construction is still mainly based on the drilling and blasting method, and the heavy-duty cantilevered tunnel boring machine for large-section rock tunnel excavation is still in the experimental stage in my country. Blasting technology has problems such as low safety, secondary damage to the tunnel, large dust, slow excavation speed, short service life, and high maintenance costs. Therefore, cantilevered tunnel boring machines that are capable of cutting hard rocks are in urgent need of technological innovation. The cutting head is the executive component of the tunnel boring machine, and its performance directly determines the economic benefits of coal mining. In order to accelerate the localization process of efficient tunneling equipment and improve the efficiency of coal and rock cutting, it is imperative to carry out structural design of the cutting head.

[0003] The cantilevered partial-section roadheader is mainly used for coal tunnels and semi-coal-rock tunnels. It has a flexible working mode and is highly adaptable to the shape of the tunnel and the occurrence of coal and rock. It can form a variety of tunnels with cross-section shapes such as rectangles, arches, trapezoids, etc., and can achieve selective cutting and cutting. It has small size and weight, high production efficiency, is convenient for tunnel support, and has low energy consumption. At present, the working mechanism of the cantilevered partial-section roadheader adopts a cutting head with multiple pick teeth. From the perspective of cutting performance, it is difficult to meet the requirements of cutting full-rock tunnels with a cutting speed of more than 8. Not only is the tool wear very serious, the dust volume is large, the energy consumption is significantly increased, and the vibration of the machine is aggravated. The total length of tunnel excavation is 9,000 km per year, of which 20% to 30% are full-rock tunnels, and 90% of them are excavated by blasting. It is very urgent to develop a cantilevered partial-section roadheader working mechanism suitable for full-rock tunnels. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-disc cutter coal and rock crushing mechanism with hydraulic cylinder rotary swing cutting, which realizes rotary swing cutting through hydraulic mechanism, the overall shape of the cutter head is disc-shaped, and there are multiple disc-shaped structures on the cutter disc. This structure can significantly improve the coal and rock cutting efficiency.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A multi-disc cutter coal and rock crushing mechanism with hydraulic cylinder rotation swing cutting, the coal and rock crushing mechanism comprising a plurality of screws (1), an end cover (2), a sealing ring (3), a cutter head shaft (11), a plurality of screws (12), a plurality of screws (13), an end cover (14), a large end cover (26), a plurality of connecting ear plates (27), a cutter head (31), a height adjustment cylinder (32), a bracket (33), a frame (34), a swing cylinder (35), a height adjustment cylinder (36), a cutting arm (37), a front body (41), and a rear body (42).

[0007] Furthermore, the cutter disc (31) comprises cutter disc one (21), cutter disc two (22), and cutter disc three (23).

[0008] Furthermore, the cutting arm (37) includes two bearings (4), a housing (5), a spline shaft (6), a second sealing ring (7), a seventh sealing ring (8), a third sealing ring (9), a positioning sleeve (10), a fourth sealing ring (15), a fifth sealing ring (16), a central shaft (17), a sixth sealing ring (18), a threaded piston (19), and a hydraulic cylinder body (25).

[0009] Furthermore, two bearings (4), a spline shaft (6), a second sealing ring (7), a seventh sealing ring (8), a third sealing ring (9), a positioning sleeve (10), a fourth sealing ring (15), a fifth sealing ring (16), a central shaft (17), a sixth sealing ring (18), a threaded piston (19), and a hydraulic cylinder body (25) are all installed in the box body (5).

[0010] Furthermore, the inner wall of the hydraulic cylinder body (25) has a threaded structure, the inner and outer sides of the threaded piston (19) have threaded structures, and the central shaft (17) partially has an external threaded structure, which is screwed with the internal thread of the threaded piston (19), and the threaded structure of the inner wall of the hydraulic cylinder body (25) is screwed with the internal thread of the threaded piston (19). One end of the central shaft (17) has a thread, and the other side is a stepped structure, which is for better sealing with the hydraulic cylinder body (25), and the stepped structure is installed with a second sealing ring (7) and a third sealing ring (9). The inner and outer cylindrical surfaces of the threaded piston (19) are respectively installed with a seventh sealing ring (8) and a sixth sealing ring (18).

[0011] Furthermore, the outer side of the cutter shaft (11) has two shoulder-shaped structures for positioning the inner ring of the bearing (4), and the positioning sleeve (10) is installed between the two bearings (4) for positioning the outer ring of the bearing (4).

[0012] Furthermore, one end of the cutter disc shaft (11) has an internal spline structure, and the external spline of the spline shaft (6) is connected to the internal spline structure of the cutter disc shaft (11).

[0013] Furthermore, the inner side of the second end cover (14) has an internal thread which is screwed into the external thread structure at one end of the central shaft (17), and the inner and outer cylindrical surfaces of the second end cover (14) are respectively provided with a sealing ring 4 (16) and a sealing ring 5 (15).

[0014] Furthermore, the blade disc (31) comprises blade disc one (21), blade disc two (22), and blade disc three (23). Blade disc one (21), blade disc two (22), and blade disc three (23) are coaxial, and each blade disc has a similar structure but different sizes.

[0015] Furthermore, the end cover (2) is connected to the box body (5) via a plurality of screws (1).

[0016] Furthermore, the box body (5) is connected to the large end cover (26) via a plurality of screws (12).

[0017] Furthermore, the box body (5) and the end cover (25) are connected via a plurality of screws (13).

[0018] Furthermore, the swing cylinder 35 is composed of a swing cylinder piston (351) and a swing cylinder body (352), the height adjustment cylinder 2 is composed of a height adjustment cylinder 2 piston (321) and a height adjustment cylinder 2 body (322), and the height adjustment cylinder 1 is composed of a height adjustment cylinder 1 piston (361) and a height adjustment cylinder 1 body (362).

[0019] Furthermore, the swing cylinder body (352) is hinged to the frame, the swing cylinder piston (351) is hinged to the rear fuselage (42), the front fuselage (41) is hinged to the rear fuselage (42), the height adjustment cylinder body (361) is hinged to the front fuselage (41), the height adjustment cylinder body (322) is hinged to the rear fuselage (42), the height adjustment cylinder piston (361) is hinged to the connecting ear plate (27), and the height adjustment cylinder piston (321) is hinged to the front fuselage (41).

[0020] Beneficial effects of the present invention:

[0021] The multi-disc knife coal-rock crushing mechanism with a hydraulic cylinder rotating and swinging cutting described in the present invention has the following characteristics: 1. The multi-disc knife coal-rock crushing mechanism with a hydraulic cylinder rotating and swinging cutting described in the present invention adopts multi-disc knife rotating and swinging cutting, and its cutting efficiency is greatly improved. 2. The multi-disc knife coal-rock crushing mechanism with a hydraulic cylinder rotating and swinging cutting described in the present invention has an ingenious structure, reliable connection, and easy maintenance. Its multi-disc knife can rotate freely around its own rotation axis, and the life of the cutting tool is increased by more than 40%. 3. The multi-disc knife coal-rock crushing mechanism with a hydraulic cylinder rotating and swinging cutting described in the present invention adopts the hydraulic principle for vibration cutting, and has a simple and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of a multi-disc cutter coal-rock crushing mechanism with a hydraulic cylinder rotating and swinging to cut according to the present invention. Figure 2 This is a cross-sectional view of the cutting arm of a multi-disc cutter coal and rock crushing mechanism with a hydraulic cylinder rotating and swinging for cutting as described in the present invention.

[0023] 1. Screw 1; 2. End cover; 3. Seal 1; 4. Two bearings; 5. Box; 6. Spline shaft; 7. Seal 2; 8. Seal 7; 9. Seal 3; 10. Positioning sleeve; 11. Cutter shaft; 12. Several screws 2; 13. Several screws 3; 14. End cover; 15. Seal 4; 16. Seal 5; 17. Center shaft; 18. Seal 6; 19. Threaded piston; 21. Cutter 1; 22. Cutter 2; 23. Cutter 3; 25. Hydraulic cylinder body; 26, large end cover; 27, several connecting ear plates; 31, cutter head; 32, height adjustment cylinder 2; 33, bracket; 34, frame; 35, swing cylinder; 36, height adjustment cylinder 1; 37, cutting arm; 41, front fuselage; 42, rear fuselage; 351, swing cylinder piston; 352, swing cylinder body; 321, height adjustment cylinder 2 piston; 322, height adjustment cylinder 2 body; 361, height adjustment cylinder 1 piston; 362, height adjustment cylinder 1 body. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments, but the present invention is not limited by the embodiments.

[0025] like Figure 1 to Figure 2As shown, a multi-disc cutter coal rock crushing mechanism with hydraulic cylinder rotating swing cutting. It includes several screws 1, end cover 2, sealing ring 3, cutter head shaft 11, several screws 2 12, several screws 3 13, end cover 2 14, large end cover 1 26, several connecting ear plates 27, cutter head 31, height adjustment cylinder 2 32, bracket 33, frame 34, swing cylinder 35, height adjustment cylinder 1 36, cutting arm 37, front body 41, rear body 42. The cutter head 31 includes cutter head 1 21, cutter head 2 22, and cutter head 3 23. The cutting arm 37 includes two bearings 4, a housing 5, a spline shaft 6, sealing ring 2 7, sealing ring 7 8, sealing ring 3 9, a positioning sleeve 10, sealing ring 4 15, sealing ring 5 16, a central shaft 17, sealing ring 6 18, a threaded piston 19, and a hydraulic cylinder body 25. The two bearings 4, the spline shaft 6, the second sealing ring 7, the seventh sealing ring 8, the third sealing ring 9, the positioning sleeve 10, the fourth sealing ring 15, the fifth sealing ring 16, the central shaft 17, the sixth sealing ring 18, the threaded piston 19, and the hydraulic cylinder body 25 are all installed in the box body 5.

[0026] The inner wall of the hydraulic cylinder body 25 has a threaded structure, the inner and outer sides of the threaded piston 19 have threaded structures, and the central shaft 17 partially has an external threaded structure, which is screwed with the internal thread of the threaded piston 19, and the threaded structure of the inner wall of the hydraulic cylinder body 25 is screwed with the internal thread of the threaded piston 19. One end of the central shaft 17 has a thread, and the other side is a stepped structure, which is for better sealing with the hydraulic cylinder body 25, and the stepped structure is installed with a sealing ring 2 7 and a sealing ring 3 9. The inner and outer cylindrical surfaces of the threaded piston 19 are respectively installed with a sealing ring 7 8 and a sealing ring 6 18.

[0027] The outer side of the cutter shaft 11 has two shoulder-shaped structures for positioning the inner ring of the bearing 4 . The positioning sleeve 10 is installed between the two bearings 4 for positioning the outer ring of the bearing 4 .

[0028] One end of the cutter shaft 11 has an internal spline structure, and the external spline of the spline shaft 6 is connected to the internal spline structure of the cutter shaft 11.

[0029] The inner side of the second end cover 14 has an internal thread which is screwed with the external thread structure at one end of the central shaft 17 . A fourth sealing ring 16 and a fifth sealing ring 15 are respectively installed on the inner and outer cylindrical surfaces of the second end cover 14 .

[0030] The cutter disc 31 includes a cutter disc 1 21, a cutter disc 2 22, and a cutter disc 3 23. The cutter disc 1 21, the cutter disc 22, and the cutter disc 3 23 are coaxial, and each cutter disc has a similar structure but different sizes.

[0031] The end cover 2 is connected to the box body 5 through a plurality of screws 1.

[0032] The box body 5 is connected to the large end cover 26 by a plurality of screws 12.

[0033] The box body 5 is connected to the end cover 25 by a plurality of screws 13.

[0034] The swing cylinder 35 is composed of a swing cylinder piston 351 and a swing cylinder body 352, the height adjustment cylinder 2 is composed of a height adjustment cylinder 2 piston 321 and a height adjustment cylinder 2 cylinder body 322, and the height adjustment cylinder 1 is composed of a height adjustment cylinder 1 piston 361 and a height adjustment cylinder 1 cylinder body 362.

[0035] The swing cylinder body 352 is hinged to the frame, the swing cylinder piston 351 is hinged to the rear fuselage 42, the front fuselage 41 is hinged to the rear fuselage 42, the height adjustment cylinder body 361 is hinged to the front fuselage 41, the height adjustment cylinder body 322 is hinged to the rear fuselage 42, the height adjustment cylinder piston 361 is hinged to the connecting ear plate 27, and the height adjustment cylinder piston 321 is hinged to the front fuselage 41.

[0036] Although the present invention has been disclosed as above in the preferred embodiment, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. A multi-disc cutter coal and rock crushing mechanism with hydraulic cylinder rotating and swinging cutting, characterized in that The invention comprises a plurality of screws (1), an end cover (2), a sealing ring (3), a cutter head shaft (11), a plurality of screws (12), a plurality of screws (13), an end cover (14), a large end cover (26), a plurality of connecting ear plates (27), a cutter head (31), a height adjustment cylinder (32), a bracket (33), a frame (34), a swing cylinder (35), a height adjustment cylinder (36), a cutting arm (37), a front body (41), and a rear body (42); the swing cylinder (35) comprises a swing cylinder piston (351) and a swing cylinder body (352); the height adjustment cylinder (2) comprises a height adjustment cylinder (2) piston (321) and a height adjustment cylinder (2) cylinder body (322); the height adjustment cylinder (1) comprises a height adjustment cylinder (1) piston (361) and a height adjustment cylinder (1) cylinder body (362); the cutter head (31) comprises a cutter head (21), a cutter head (22), a cutter head (33), a frame (34), a swing cylinder (35), a height adjustment cylinder (36), a cutting arm (37), a front body (41), and a rear body (42); the swing cylinder (35) comprises a swing cylinder piston (351) and a swing cylinder body (352); the height adjustment cylinder (2) comprises a height adjustment cylinder (2) piston (321) and a height adjustment cylinder (2) cylinder body (322); the height adjustment cylinder (1) comprises a height adjustment cylinder (1) piston (361) and a height adjustment cylinder (1) cylinder body (362); The present invention is composed of a cutter disc (23), a cutter disc (21), a cutter disc (22), and a cutter disc (23) coaxially, each cutter disc has a similar structure but different sizes, the cutter disc (21), the cutter disc (22), and the cutter disc (23) are arranged at intervals and are in a truncated cone shape as a whole; one end of the cutter disc (31) is connected to the cutter disc shaft (11), the cutter disc shaft (11) is connected to the cutting arm (37), the cutting arm (37) is connected to the connecting ear plate (27), and the swing cylinder body (352) is hinged to the frame, the swing cylinder piston (351) is hinged to the rear fuselage (42), the front fuselage (41) is hinged to the rear fuselage (42), the height adjustment cylinder body (361) is hinged to the front fuselage (41), the height adjustment cylinder body (322) is hinged to the rear fuselage (42), the height adjustment cylinder piston (361) is hinged to the connecting ear plate (27), and the height adjustment cylinder piston (321) is hinged to the front fuselage (41).

2. According to claim 1, a multi-disc knife coal and rock crushing mechanism with a hydraulic cylinder rotating and swinging cutting, the technical feature of which is that the cutting arm (37) includes two bearings (4), a box body (5), a spline shaft (6), a second sealing ring (7), a seventh sealing ring (8), a third sealing ring (9), a positioning sleeve (10), a fourth sealing ring (15), a fifth sealing ring (16), a center shaft (17), a sixth sealing ring (18), a threaded piston (19), and a hydraulic cylinder body (25).

3. According to claim 2, a hydraulic cylinder rotary swing cutting multi-disc cutter coal rock crushing mechanism, its technical characteristics are that the box body (5) includes two bearings (4), a spline shaft (6), a second sealing ring (7), a seventh sealing ring (8), a third sealing ring (9), a positioning sleeve (10), a fourth sealing ring (15), a fifth sealing ring (16), a central shaft (17), a sixth sealing ring (18), a threaded piston (19), and a hydraulic cylinder body (25) are all installed in the box body (5); the end cover (2) is connected to the box body (5) by a plurality of screws (1), the box body (5) is connected to the large end cover (26) by a plurality of screws (12), and the box body (5) is connected to the end cover (25) by a plurality of screws (13).

4. According to claim 2, a multi-disc cutter coal and rock crushing mechanism with a hydraulic cylinder rotating and swinging cutting is technically characterized in that the inner wall of the hydraulic cylinder body (25) has a threaded structure, the inside and outside of the threaded piston (19) both have a threaded structure, and the central axis (17) partially has an external thread structure, which is screwed with the internal thread of the threaded piston (19), and the threaded structure of the inner wall of the hydraulic cylinder body (25) is screwed with the internal thread of the threaded piston (19).

5. According to claim 2, a multi-disc cutter coal and rock crushing mechanism with a hydraulic cylinder rotating and swinging cutting, its technical feature is that one end of the central axis (17) has a thread, and the other side is a stepped structure, which is for better sealing with the hydraulic cylinder body (25), and the stepped structure is installed with a second sealing ring (7) and a third sealing ring (9).

6. A multi-disc cutter coal and rock crushing mechanism with a hydraulic cylinder rotating and swinging cutting as described in claim 2, wherein the technical feature is that a sealing ring seven (8) and a sealing ring six (18) are respectively installed on the inner and outer cylindrical surfaces of the threaded piston (19).

7. According to claim 1, a multi-disc cutter coal and rock crushing mechanism with a hydraulic cylinder rotating and swinging cutting, its technical feature is that the outer side of the cutter shaft (11) has two shoulder-like structures for positioning the inner ring of the bearing (4), the positioning sleeve (10) is installed between the two bearings (4) for positioning the outer ring of the bearing (4), one end of the cutter shaft (11) has an internal spline structure, and the external spline of the spline shaft (6) is connected to the internal spline structure of the cutter shaft (11).

8. According to the multi-disc cutter coal and rock crushing mechanism with hydraulic cylinder rotating and swinging cutting as described in claim 1, its technical feature is that the inner side of the end cover 2 (14) has an internal thread, which is screwed with the external thread structure at one end of the central axis (17), and the sealing ring 4 (15) and the sealing ring 5 (16) are respectively installed on the inner and outer cylindrical surfaces of the end cover 2 (14).

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