Disc cutter cutting device and heading machine

Abstract

The invention belongs to the technical field of heading machines, and particularly relates to a disc cutter cutting device and a heading machine. In addition, the invention further relates to a heading machine provided with the disc cutter cutting device. The invention provides a disc cutter cutting device and a heading machine. According to the invention, cutting of hard rocks of 60-120 MPa can be realized, surrounding rocks are not easy to damage, the economical efficiency is good, and the heading machine is compact in structure, small in turning radius and flexible. The disc cutter cutting device comprises a rotary table, a fork-shaped frame capable of swinging up and down is arranged on the rotary table in a hinged mode, a lifting oil cylinder is arranged between the bottom of the rotary table and the fork-shaped frame, and the disc cutter cutting device is characterized in that the fork-shaped frame is hinged to one end of a folding arm oil cylinder, and the other ends of the two folding arm oil cylinders are hinged to the two sides of a rotary frame respectively; a planetary reducer with a hydraulic motor is arranged on the reversing frame, and a disc cutter assembly is arranged on the planetary reducer.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel boring machines, and in particular relates to a disc cutter device. In addition, the invention also relates to a tunnel boring machine equipped with the disc cutter device. Background Art

[0002] At present, the existing excavation methods include drilling and blasting, cantilevered tunnel boring machine, and TBM. The drilling and blasting method causes great damage to the surrounding rock, often over-excavation or under-excavation, and has high support costs, and is especially unsafe; the cantilevered tunnel boring machine cutting device is usually equipped with a frustum-shaped cutting head with pick-type cutting teeth. For cutting rocks with a uniaxial compressive strength of more than 80MPa, the cutting efficiency is reduced, the cutting teeth are rapidly damaged, and the economy is poor; the TBM uses a roller cutter for cutting, which has a high cutting hardness, but the TBM has a large external size, a large turning radius, a long installation and disassembly cycle, and poor adaptability to changing geological conditions. Therefore, the market is in urgent need of a disc cutter cutting device and a tunnel boring machine. Summary of the invention

[0003] The present invention aims at the above problems and provides a disc cutter cutting device and a tunnel boring machine. The present invention can realize the cutting of 60-120MPa hard rock, is not easy to damage the surrounding rock, has good economic efficiency, and the tunnel boring machine has a compact structure, a small turning radius, and is flexible and maneuverable.

[0004] In order to achieve the above-mentioned purpose of the present invention, the present invention adopts the following technical scheme. The disc cutter cutting device of the present invention includes a turntable, a fork frame which can swing up and down is hingedly arranged on the turntable, and a lifting cylinder is arranged between the bottom of the turntable and the fork frame. It is characterized in that: the fork frame is respectively hinged to one end of a folding arm cylinder, and the other ends of the two folding arm cylinders are respectively hinged to two sides of a turntable; a planetary reducer with a hydraulic motor is arranged on the turntable, and a disc cutter assembly is arranged on the planetary reducer.

[0005] As a preferred solution of the present invention, one of the folding arm oil cylinders is arranged at the edge of one side of the fork frame, and the other folding arm oil cylinder is arranged at the middle of the other side of the fork frame.

[0006] As another preferred embodiment of the present invention, the disc cutter assembly comprises a disc cutter holder, which is connected to the planetary reducer via a spline assembly, and a small disc cutter which can rotate by friction is arranged on the surface of the disc cutter holder.

[0007] Furthermore, the number of the small disc cutters is seven and they are evenly distributed on the outer circumference of the disc cutter holder.

[0008] As a third preferred solution of the present invention, a first slewing support is provided between the slewing frame and the fork frame.

[0009] The tunnel boring machine using the disc cutter cutting device of the present invention comprises a crawler traveling mechanism, on which a frame is arranged, and is characterized in that a second slewing support is arranged between the frame and the turntable, and a slewing cylinder is arranged between the frame and the second slewing support.

[0010] Furthermore, the frame is also provided with an electronically controlled hydraulic system.

[0011] Furthermore, a shovel is provided at the front end of the frame, and a transport is provided at the rear end of the frame.

[0012] Beneficial effects of the present invention: The disc cutter cutting device of the present invention adopts a disc cutter assembly structure, and utilizes the principle that the tensile and shearing destructive force of rock is much smaller than the backlog crushing force to achieve efficient crushing of hard rock. Its cutting mechanism can meet the requirements of 60-120MPa hard rock cutting. The tunnel boring machine equipped with the disc cutter cutting device has a compact structure, a small turning radius, and is flexible and maneuverable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the disc cutter cutting device of the present invention.

[0014] Figure 2 It is a schematic structural diagram of the disc cutter device from another angle of the present invention.

[0015] Figure 3 It is a top view of the disc cutter cutting device of the present invention.

[0016] Figure 4 It is a structural schematic diagram of the disc cutter assembly.

[0017] Figure 5 It is a schematic diagram of the structure of the disc cutter assembly from another angle.

[0018] Figure 6 It is a structural diagram of a planetary reducer.

[0019] Figure 7 It is a structural schematic diagram of the tunnel boring machine of the present invention.

[0020] Figure 8 yes Figure 7 Top view of the .

[0021] Fig. 9 It is a usage state diagram of the disc cutter cutting device of the present invention.

[0022] In the attached drawings, 1 is a disc cutter assembly, 2 is a planetary reducer, 3 is a hydraulic motor, 4 is a slewing frame, 5 is a first slewing bearing, 6 is a folding arm cylinder, 7 is a fork frame, 8 is a lifting cylinder, 9 is a slewing table, 10 is a second slewing bearing, 11 is a frame, 12 is a slewing cylinder, 13 is a crawler walking mechanism, 14 is a shovel board, 15 is a transport, 16 is an electronically controlled hydraulic system, 17 is a disc cutter holder, 18 is a spline assembly, and 19 is a small disc cutter. DETAILED DESCRIPTION

[0023] The disc cutter cutting device of the present invention comprises a turntable 9, on which a fork frame 7 capable of swinging up and down is hingedly arranged, and a lifting cylinder 8 is arranged between the bottom of the turntable 9 and the fork frame 7. The device is characterized in that: the fork frame 7 is hinged to one end of a folding arm cylinder 6 respectively, and the other ends of the two folding arm cylinders 6 are hinged to the two sides of a turntable 4 respectively; a planetary reducer 2 with a hydraulic motor 3 is arranged on the turntable 4, and a disc cutter assembly 1 is arranged on the planetary reducer 2.

[0024] Through the cooperation of the turntable 9, the fork frame 7, the folding arm cylinder 6 and the lifting cylinder 8, the disc cutter cutting device has the ability to swing up and down and rotate, which improves the adaptability of the cutting device to different cutting angles and enhances the flexibility and stability of the excavation operation.

[0025] One of the folding arm oil cylinders 6 is arranged at the edge of one side of the fork frame 7 , and the other of the folding arm oil cylinders 6 is arranged at the middle of the other side of the fork frame 7 .

[0026] By optimizing the arrangement of the folding arm oil cylinder 6, the folding arm oil cylinder 6 can provide a better turning radius when working, thereby improving the adaptability of the equipment.

[0027] The disc cutter assembly 1 comprises a disc cutter holder 17, which is connected to the planetary reducer 2 via a spline assembly 18. A small disc cutter 19 which can rotate by friction is arranged on the surface of the disc cutter holder 17.

[0028] By connecting the spline assembly 18 to the planetary reducer 2, the small disc cutter 19 can revolve synchronously, and the friction between the small disc cutter 19 and the rock is used to achieve the self-rotation of the small disc cutter, thereby improving the rock crushing efficiency and enhancing the adaptability of the tunnel boring machine to high-hardness rock formations.

[0029] The number of the small disc cutters 19 is seven and evenly distributed on the outer circumference of the disc cutter holder 17. The structural design of evenly distributed seven small disc cutters 19 makes the cutting force evenly distributed on the cutter disc, improves the cutting stability, reduces the wear of a single cutter, prolongs the service life of the cutter, and improves the working reliability of the equipment.

[0030] A first slewing bearing 5 is provided between the slewing frame 4 and the fork frame 7. The provision of the first slewing bearing 5 enables the slewing frame 4 and the fork frame 7 to rotate flexibly, thereby enhancing the adaptability of the disc cutter device under complex geological conditions and improving the stability and accuracy of the excavation operation.

[0031] The tunnel boring machine using the disc cutter device of the present invention comprises a crawler walking mechanism 13, on which a frame 11 is arranged, and is characterized in that a second slewing support 10 is arranged between the frame 11 and the turntable 9, and a slewing cylinder 12 is arranged between the frame 11 and the second slewing support.

[0032] Through the cooperation of the second slewing bearing 10 and the slewing cylinder 12, the tunnel boring machine has a larger slewing angle range during operation, is suitable for a variety of complex working conditions, and improves tunneling efficiency and construction flexibility.

[0033] The frame 11 is also provided with an electronically controlled hydraulic system 16. The electronically controlled hydraulic system 16 improves the automation level of the roadheader, makes the operation more accurate and convenient, optimizes the response speed and control accuracy of the hydraulic system, and improves the overall operation efficiency of the equipment.

[0034] The front end of the frame 11 is provided with a shovel plate 14, and the rear end of the frame 11 is provided with a conveyor 15. The shovel plate 14 provided at the front end of the frame 11 can effectively clean up the broken rocks generated during the excavation process, improve the construction efficiency, and ensure the cleanliness of the working surface; the conveyor 15 device is provided at the rear end, so that the rock debris generated during the excavation process can be quickly discharged, improve the continuity of excavation, reduce manual intervention, and improve the overall working efficiency.

[0035] As shown in the accompanying drawings, the present embodiment provides a disc cutter cutting device, including a disc cutter assembly 1, a planetary reducer 2, a hydraulic motor 3, a rotating frame 4, a first rotating bearing 5, a folding arm oil cylinder 6, a fork frame 7, a lifting cylinder 8, and a rotating table 9. The disc cutter assembly 1 is connected to the output shaft of the planetary reducer 2 through a spline connection transmission; the hydraulic motor 3 is directly connected to the input end of the planetary reducer 2 through a spline drive; the planetary reducer 2 is fixedly connected to the rotating frame 4 through bolts; the rotating frame 4 is fixedly connected to the inner ring of the first rotating bearing 5 through bolts; the outer ring of the first rotating bearing 5 is fixedly connected to the fork frame 7 through bolts; the rotating frame 4 and the fork frame 7 are connected through the folding arm oil cylinder 6 and the pin shaft, and the first level of left and right rotation and swing can be achieved by adjusting the folding arm oil cylinder 6; the fork frame 7 is connected to the rotating table 9 through the lifting cylinder 8 and the pin shaft, and the lifting cylinder 8 can be adjusted to achieve up and down swing. The disc cutter assembly 1 can change the feed angle and cutting depth by adjusting the folding arm oil cylinder 6 and the rotating oil cylinder 12.

[0036] The disc cutter assembly 1 contains seven small disc cutters 19 and a disc cutter holder 17. The small disc cutters 19 are evenly distributed around the circumference and are fixedly connected to the disc cutter holder 17 by bolts. The hydraulic motor 3 transmits power to the disc cutter assembly 1 through the planetary reducer 2 to realize the revolution and rotation of the seven small disc cutters 19. The seven small disc cutters 19 passively rotate to crush the hard rock to realize disc cutter cutting. The reaction force generated by the disc cutter cutting is borne by the planetary reducer 2.

[0037] The present invention also provides a roadheader, comprising a disc cutter cutting device, a second slewing bearing 10, a frame 11, a slewing oil cylinder 12, a crawler walking track, a shovel plate 14, a first drive 15, and an electronically controlled hydraulic system 16. The slewing table 9 on the disc cutter cutting device is fixedly connected to the inner ring of the second slewing bearing 10 by bolts; the outer ring of the second slewing bearing 10 is fixedly connected to the frame 11 by bolts; the disc cutter cutting device and the frame 11 are connected to the pin shaft by the slewing oil cylinder 12, and the frame 11 is connected to the crawler walking track, and is equipped with a shovel plate 14, a first drive 15 and an electronically controlled hydraulic system 16.

[0038] Cutting steps: adjust the folding arm cylinder 6 to rotate the rotating frame 4 to the right limit. Fig. 9 left, then adjust the arm cylinder 6 to make the disc cut to the left side of the tunnel; then adjust the rotary cylinder 12 to make the entire cutting device rotate to the right. Fig. 9 Right, until the disc cutter cuts to the right side of the tunnel. The two cutting rotation centers and cutting radii are different, thereby realizing the feed of the disc cutter excavation.

[0039] It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the protection scope of the present invention.

Claims

1. A disc cutter device, comprising a rotary table (9), a fork frame (7) being hingedly provided on the rotary table (9) and capable of swinging up and down, a lifting cylinder (8) being provided between the bottom of the rotary table (9) and the fork frame (7), characterized in that: The fork-shaped frame (7) is respectively hinged to one end of a folding arm oil cylinder (6), and the other ends of the two folding arm oil cylinders (6) are respectively hinged to two sides of a slewing frame (4); a planetary reducer (2) having a hydraulic motor (3) is arranged on the slewing frame (4), and a disc cutter assembly (1) is arranged on the planetary reducer (2).

2. A disc cutter device according to claim 1, characterized in that: One of the folding arm oil cylinders (6) is arranged at the edge of one side of the fork frame (7), and the other of the folding arm oil cylinders (6) is arranged at the middle of the other side of the fork frame (7).

3. A disc cutter device according to claim 1, characterized in that: The disc cutter assembly (1) comprises a disc cutter holder (17), the disc cutter holder (17) being connected to the planetary reducer (2) via a spline assembly (18), and a small disc cutter (19) capable of rotating by friction is arranged on the surface of the disc cutter holder (17).

4. A disc cutter device according to claim 3, characterized in that: The number of the small disc cutters (19) is seven and they are evenly distributed on the outer circumference of the disc cutter holder (17).

5. The disc cutter device according to claim 1, characterized in that: A first slewing support (5) is provided between the slewing frame (4) and the fork frame (7).

6. A roadheader using any one of the disc cutter devices as claimed in claims 1 to 5, comprising a crawler walking mechanism (13), a frame (11) being arranged on the crawler walking mechanism (13), characterized in that: A second slewing support (10) is provided between the frame (11) and the slewing table (9), and a slewing oil cylinder (12) is provided between the frame (11) and the second slewing support.

7. The tunnel boring machine according to claim 6, characterized in that: The frame (11) is also provided with an electronically controlled hydraulic system (16).

8. The tunnel boring machine according to claim 1, characterized in that: The front end of the frame (11) is provided with a shovel plate (14), and the rear end of the frame (11) is provided with a transport (15).

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