Cutting device and heading machine

Abstract

The cutting device comprises a cutting head assembly, a cantilever section, a cutting speed reducer, a motor box body and a cutting motor, the cutting motor is arranged in the motor box body, the cutting head assembly, the cantilever section, the cutting speed reducer and the cutting motor are sequentially and coaxially connected, the cutting motor is arranged on the motor box body, and the cantilever section is arranged on the motor box body. The cutting head assembly on the cantilever section is driven by the cutting speed reducer to rotate and comprises a cutting head, a spiral boss arranged on the outer surface of the cutting head, a cutting tooth mounting seat arranged on the cutting head along the spiral boss and cutting teeth arranged on the cutting tooth mounting seat; the outer surface of the cutting head and the spiral boss form a spiral material passing groove, the outer surface of the cutting head is provided with a spiral deepening groove, and the spiral deepening groove is distributed in the spiral material passing groove, so that the labor intensity of overhauling and maintaining the cutting head can be reduced, the overhauling and maintaining efficiency is improved, and the service life of the cutting head is prolonged. Materials can be prevented from being extruded and bonded to the spiral material passing groove of the cutting head, and the cutting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment, in particular to a cutting device. In addition, the utility model also relates to a tunneling machine comprising the cutting device. Background Art

[0002] The equipment often used in coal mining or tunnel construction is the roadheader, which is mainly composed of a traveling mechanism, a cutting mechanism, a loading mechanism, a transport structure, a dust removal mechanism and a platform mechanism. As the traveling mechanism moves forward, the cutting head in the loading mechanism continuously breaks up and down, left and right, and transports the broken rocks away. At the same time, the dust removal system can eliminate most of the dust. It has the advantages of safety, high efficiency and good tunnel quality.

[0003] After the cutting head of the tunnel boring machine has been working for a long time, the staff needs to regularly inspect and maintain the cutting head to ensure better subsequent work. However, the cutting motors of existing tunnel boring machines are mostly arranged inside the cutting device. During the disassembly and assembly process, the staff needs to disassemble the entire cutting device, which is a large workload and the operating space is limited, resulting in low efficiency and inconvenience for rapid disassembly and assembly, inspection and maintenance. In addition, during the operation of the cutting head, the working surface is dusty. Negative pressure fans and water mist dust reduction are often used to reduce the dust on the working surface. Mud and gravel are often squeezed and adhered to the cutting head body, affecting the effective feed distance between the cutting tool and the working surface, resulting in reduced cutting efficiency. Utility Model Content

[0004] The utility model provides a cutting device and a tunneling machine to solve the technical problems that when the existing cutting device is inspected and maintained, the cutting head needs to be disassembled as a whole with the motor, which causes a large workload and low efficiency; and when the cutting head is working, mud and gravel are easily squeezed and adhered to the cutting head, which affects the effective feed distance and leads to reduced cutting efficiency.

[0005] According to one aspect of the utility model, a cutting device is provided, including a cutting head assembly, a cantilever section, a cutting reducer, a motor case and a cutting motor, wherein the cutting motor is arranged in the motor case, the cutting head assembly, the cantilever section, the cutting reducer and the cutting motor are coaxially connected in sequence, the cutting motor is arranged on the motor case, and the cutting head assembly on the cantilever section is driven to rotate by the cutting reducer, the cutting head assembly includes a cutting head, a spiral boss arranged on the cutting head, an outer surface, a cutting tooth mounting seat arranged on the cutting head along the spiral boss, and cutting teeth arranged on the cutting tooth mounting seat, the outer surface of the cutting head and the spiral boss form a spiral material trough, a spiral deepening groove is opened on the outer surface of the cutting head, and the spiral deepening groove is arranged in the spiral material trough.

[0006] Furthermore, a side wall of the spiral deepening groove away from one side of the cantilever section is connected to the spiral boss, and a depth of a side wall of the spiral deepening groove connected to the spiral boss is greater than a depth of another side wall of the spiral deepening groove.

[0007] Furthermore, the cantilever section includes a shell for being arranged on the cutting reducer, a transmission shaft rotatably arranged on the shell, an external spline arranged on the first end of the transmission shaft for driving the cutting head to rotate, and a spline sleeve arranged on the second end of the transmission shaft for connecting the cutting reducer.

[0008] Furthermore, the cutting head is provided with a through hole arranged along its axial direction, the transmission shaft is provided with a threaded hole corresponding to the through hole, and the cutting head is connected to the transmission shaft by screws.

[0009] Furthermore, the cutting reducer includes a gearbox arranged on the motor housing, a first spline shaft arranged on the first end of the gearbox, and a second spline shaft arranged on the second end of the gearbox, the housing is connected to the gearbox, the first spline shaft is connected to the spline sleeve, and the second spline shaft is connected to the output end of the cutting motor.

[0010] Furthermore, the motor box includes a main structure, an articulated shaft, an oil cylinder and a motor mounting seat. The main structure and the tunnel boring machine frame are hinged through the articulated shaft. The two ends of the oil cylinder are respectively hinged to the main structure and the tunnel boring machine frame. The cutting motor is arranged on the motor mounting seat.

[0011] Furthermore, a cover plate for shielding the cutting motor is arranged on the motor housing.

[0012] Furthermore, a stopper is arranged on the motor housing to prevent the cutting motor from axial movement.

[0013] Furthermore, the cutting motor includes a motor body and a connecting flange arranged on the motor body for connecting to the motor mounting seat, and the output shaft of the motor body is connected to the second spline shaft.

[0014] According to another aspect of the utility model, a tunneling machine is also provided, which includes the above-mentioned cutting device.

[0015] The utility model has the following beneficial effects:

[0016] The cutting device of the present embodiment of the utility model places the cutting motor at a rear end inside the cutting motor, and drives the cutting head assembly on the cantilever section to rotate through the cutting reducer. When the cutting head is inspected and maintained, it is only necessary to remove the cutting head from the cantilever section, which can reduce labor intensity and improve the efficiency of inspection and maintenance. The spiral deepening groove is provided on the cutting head to increase the feeding space of the spiral feeding trough, which can prevent the material from being squeezed and adhered to the spiral feeding trough of the cutting head, so that the cut and detached material can be discharged efficiently, thereby ensuring that the effective feed distance between the cutting tool and the working surface is accurate, thereby improving the cutting efficiency.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of a cutting device in a preferred embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the cutting device of the preferred embodiment of the utility model from another perspective;

[0021] Figure 3 It is a structural schematic diagram of a cutting head of a preferred embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a pick according to a preferred embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the through hole in the preferred embodiment of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the spiral deepening groove of the preferred embodiment of the utility model;

[0025] Figure 7 It is a structural schematic diagram of a cantilever section of a preferred embodiment of the utility model;

[0026] Figure 8 It is a schematic structural diagram of a transmission shaft of a preferred embodiment of the utility model;

[0027] Fig. 9 It is a structural schematic diagram of a cutting reducer of a preferred embodiment of the utility model;

[0028] Fig.10It is a structural schematic diagram of a motor housing of a preferred embodiment of the utility model;

[0029] Fig.11 It is a structural schematic diagram of the main structure of the preferred embodiment of the utility model;

[0030] Fig.12 It is a structural schematic diagram of a cutting motor of a preferred embodiment of the utility model;

[0031] Fig.13 It is a structural schematic diagram of a tunnel boring machine according to a preferred embodiment of the utility model.

[0032] Legend:

[0033] 1. Cutting head assembly; 11. Cutting head; 12. Spiral boss; 13. Cutting tooth mounting seat; 14. Cutting tooth; 15. Spiral feeding trough; 16. Spiral deepening groove; 17. Through hole; 2. Cantilever section; 21. Shell; 22. Transmission shaft; 221. Threaded hole; 23. External spline; 24. Spline sleeve; 3. Cutting reducer; 31. Gear box; 32. First spline shaft; 33. Second spline shaft; 4. Motor housing; 41. Main structure; 42. Articulated shaft; 43. Cylinder; 44. Motor mounting seat; 45. Cover plate; 46. Stopper; 5. Cutting motor; 51. Motor body; 52. Connecting flange; 53. Output shaft; 100. Cutting device; 200. Frame; 300. Shovel plate; 400. Scraper; 500. Electrical mechanism; 600. Hydraulic mechanism. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0035] Please also read Figures 1 to 12 The cutting device 100 of this embodiment includes a cutting head assembly 1, a cantilever section 2, a cutting reducer 3, a motor case 4 and a cutting motor 5. The cutting motor 5 is arranged in the motor case 4. The cutting head assembly 1, the cantilever section 2, the cutting reducer 3 and the cutting motor 5 are coaxially connected in sequence. The cutting motor 5 is arranged on the motor case 4, and the cutting head assembly 1 on the cantilever section 2 is driven to rotate by the cutting reducer 3. The cutting head assembly 1 includes a cutting head 11, a spiral boss 12 arranged on the outer surface of the cutting head 11, a pick mounting seat 13 arranged on the cutting head 11 along the spiral boss 12, and a pick 14 arranged on the pick mounting seat 13. The outer surface of the cutting head 11 and the spiral boss 12 form a spiral feed trough 15. A spiral deepening groove 16 is opened on the outer surface of the cutting head 11, and the spiral deepening groove 16 is arranged in the spiral feed trough 15.

[0036] The cutting device 100 of this embodiment places the cutting motor 5 at the rear end inside the cutting motor 5, and drives the cutting head assembly 1 on the cantilever section 2 to rotate through the cutting reducer 3. When the cutting head 11 is inspected and maintained, it is only necessary to remove the cutting head 11 from the cantilever section 2, which can reduce labor intensity and improve the efficiency of inspection and maintenance; a spiral deepening groove 16 is provided on the cutting head 11, which can increase the feeding space of the spiral feeding trough 15, and can prevent the material from being squeezed and adhered to the spiral feeding trough 15 of the cutting head 11, so that the cut and detached material can be discharged efficiently, thereby ensuring that the effective feed distance between the cutting tool and the working surface is accurate, thereby improving the cutting efficiency.

[0037] like Figure 6 As shown, in this embodiment, the side wall a of the spiral deepening groove 16 away from the cantilever section 2 is connected to the spiral boss 12, and the depth of the side wall a where the spiral deepening groove 16 is connected to the spiral boss 12 is greater than the depth of the other side wall b of the spiral deepening groove 16, so that the space between the side wall a and the spiral boss 12 is increased, which can prevent the material from being squeezed and adhered to the dead angle between the outer surface of the cutting head 11 and the spiral boss 12, so that the cut and detached material can be discharged efficiently, thereby improving the cutting efficiency.

[0038] In this embodiment, the cantilever section 2 includes a shell 21 for being arranged on the cutting reducer 3, a transmission shaft 22 rotatably arranged on the shell 21, an external spline 23 arranged on the first end of the transmission shaft 22 for driving the cutting head 11 to rotate, and a spline sleeve 24 arranged on the second end of the transmission shaft 22 for connecting the cutting reducer 3.

[0039] In this embodiment, the cutting head 11 is provided with a through hole 17 arranged along its axial direction, and the transmission shaft 22 is provided with a threaded hole 221 corresponding to the through hole 17. The cutting head 11 and the transmission shaft 22 are connected by screws, and the screws can be removed from the outside of the cutting head 11. The operation is simple and the disassembly efficiency can be improved.

[0040] In this embodiment, the cutting reducer 3 includes a gear box 31 arranged on the motor housing 4, a first spline shaft 32 arranged on the first end of the gear box 31, and a second spline shaft 33 arranged on the second end of the gear box 31. The housing 21 is connected to the gear box 31, the first spline shaft 32 is connected to the spline sleeve 24, and the second spline shaft 33 is connected to the output end of the cutting motor 5. Through the connection form of the spline shaft and the spline sleeve, stable transmission can be achieved and disassembly and assembly are convenient.

[0041] In this embodiment, the motor box 4 includes a main structure 41, an articulated shaft 42, a cylinder 43 and a motor mounting seat 44. The main structure 41 and the tunnel boring machine frame 200 are hinged through the articulated shaft 42. The two ends of the cylinder 43 are respectively hinged to the main structure 41 and the tunnel boring machine frame 200. The cutting motor 5 is arranged on the motor mounting seat 44. The main structure 41 can rotate around the articulated shaft 42 as the axis through the extension and retraction of the cylinder 43, thereby meeting the requirements of multi-angle construction of the cutting device.

[0042] In this embodiment, a cover plate 45 for shielding the cutting motor 5 is arranged on the motor box 4. The cover plate 45 can provide dustproof, waterproof and anti-collision protection for the cutting motor 5, thereby ensuring the stable operation of the cutting motor 5.

[0043] In this embodiment, a stopper 46 is arranged on the motor housing 4 to prevent the cutting motor 5 from axial movement. It has a simple structure and a firm connection, which can prevent the output shaft 53 from loosening from the second spline shaft 33 and reduce the vibration of the motor body 51.

[0044] like Fig.12 As shown, in this embodiment, the cutting motor 5 includes a motor body 51 and a connecting flange 52 arranged on the motor body 51 for connecting to the motor mounting seat 44. The output shaft 53 of the motor body 51 is connected to the second spline shaft 33, and the connection is firm and easy to disassemble and assemble.

[0045] like Fig.13 As shown, the tunnel boring machine of this embodiment includes the above-mentioned cutting device 100, and also includes a frame 200, a shovel board 300, a scraper 400, an electrical mechanism 500 and a hydraulic mechanism 600.

[0046] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cutting device, characterized in that: The invention comprises a cutting head assembly (1), a boom section (2), a cutting reducer (3), a motor housing (4) and a cutting motor (5), wherein the cutting motor (5) is arranged in the motor housing (4), the cutting head assembly (1), the boom section (2), the cutting reducer (3) and the cutting motor (5) are coaxially connected in sequence, the cutting motor (5) is arranged on the motor housing (4), and the cutting head assembly (1) on the boom section (2) is driven to rotate through the cutting reducer (3), The cutting head assembly (1) comprises a cutting head (11), a spiral boss (12) arranged on the outer surface of the cutting head (11), a pick mounting seat (13) arranged on the cutting head (11) along the spiral boss (12), and a pick (14) arranged on the pick mounting seat (13). The outer surface of the cutting head (11) and the spiral boss (12) form a spiral material trough (15), and a spiral deepening groove (16) is provided on the outer surface of the cutting head (11), and the spiral deepening groove (16) is arranged in the spiral material trough (15).

2. The cutting device according to claim 1, characterized in that: The side wall of the spiral deepening groove (16) away from the cantilever section (2) is connected to the spiral boss (12), and the depth of the side wall where the spiral deepening groove (16) is connected to the spiral boss (12) is greater than the depth of the other side wall of the spiral deepening groove (16).

3. The cutting device according to claim 1 or 2, characterized in that: The cantilever section (2) comprises a housing (21) for being arranged on the cutting reducer (3), a transmission shaft (22) rotatably arranged on the housing (21), an external spline (23) arranged on the first end of the transmission shaft (22) for driving the cutting head (11) to rotate, and a spline sleeve (24) arranged on the second end of the transmission shaft (22) for connecting to the cutting reducer (3).

4. The cutting device according to claim 3, characterized in that: The cutting head (11) is provided with a through hole (17) arranged along its axial direction, the transmission shaft (22) is provided with a threaded hole (221) corresponding to the through hole (17), and the cutting head (11) and the transmission shaft (22) are connected by screws.

5. The cutting device according to claim 3, characterized in that: The cutting reducer (3) comprises a gear box (31) arranged on the motor housing (4), a first spline shaft (32) arranged on a first end of the gear box (31), and a second spline shaft (33) arranged on a second end of the gear box (31). The housing (21) is connected to the gear box (31), the first spline shaft (32) is connected to the spline sleeve (24), and the second spline shaft (33) is connected to the output end of the cutting motor (5).

6. The cutting device according to claim 5, characterized in that: The motor housing (4) comprises a main structure (41), an articulated shaft (42), an oil cylinder (43) and a motor mounting seat (44); the main structure (41) and a tunnel boring machine frame are articulated via the articulated shaft (42); two ends of the oil cylinder (43) are respectively articulated to the main structure (41) and the tunnel boring machine frame; and the cutting motor (5) is arranged on the motor mounting seat (44).

7. The cutting device according to claim 6, characterized in that: The motor housing (4) is provided with a cover plate (45) for shielding the cutting motor (5).

8. The cutting device according to claim 6, characterized in that: The motor housing (4) is provided with a stopper (46) for preventing the cutting motor (5) from axial movement.

9. The cutting device according to claim 6, characterized in that: The cutting motor (5) comprises a motor body (51) and a connecting flange (52) arranged on the motor body (51) and used for connecting to the motor mounting seat (44); an output shaft (53) of the motor body (51) is connected to the second spline shaft (33).

10. A tunnel boring machine, characterized in that: A cutting device comprising the cutting device according to any one of claims 1 to 9.

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