A cutter-type drum cutting device and a full-face tunneling machine comprising the same

Abstract

The utility model belongs to the technical field of mine machinery, concretely provides a kind of cutter drum cutting device and the full face tunneling machine comprising it, including cutting mainframe, cutting drum, cutter assembly, drum end panel and end surface cutting tooth;Cutting mainframe includes rack main body and cutting speed reducer;Cutting drum is fixedly connected with the driving end of cutting speed reducer;Cutter assembly is provided with multiple groups along the circumferential array of cutting drum, and single cutter assembly is connected with cutting drum by cutter seat;Drum end panel is provided with two pieces respectively arranged on the two end faces of cutting mainframe;End surface cutting tooth is provided with two pieces connected with two drum end panels respectively.The utility model can improve the cutting rock breaking capacity of long horizontal axis full face drum cutting device;It can be used as the cutting replacement component of excavating-anchor integrated machine or rock tunneling machine, and the cutting performance and service life of the whole machine can be directly improved by replacing cutting device.

Description

Technical Field

[0001] This utility model belongs to the field of mining machinery technology, and relates to a rotary cutter drum cutting device and a full-face tunneling machine including the same. Background Technology

[0002] The drum cutting device is an important component of the roadheader-anchor machine, used for excavating full-face roadways. The main structure of the drum cutting device consists of a cutting drum and a cutting reducer assembly. The cutting drum mainly includes the right end of the outer drum, the right end of the inner drum, the left end of the inner drum, the left end of the outer drum, and pick-shaped cutting teeth. The cutting reducer assembly mainly includes a cutting reducer and a main frame. The reducer is mounted on the main frame. The rotation of the cutting drum drives the pick-shaped cutting teeth to achieve the rock-breaking and tunneling function.

[0003] Currently, in the mining of full-rock or semi-coal-rock tunnels, cantilever tunneling machines or roadheaders are commonly used. Their cutting devices are horizontal or vertical axis cutting heads. During tunnel mining, the cutting head needs to swing back and forth to cut, and it cannot cut the entire cross-section at once, resulting in low production efficiency. Some construction units use roadheaders with integrated cutting and anchoring machines with cutting tooth rollers, but when encountering tunnels with high rock hardness, the cutting teeth wear out severely and need to be replaced frequently, resulting in high costs. Its economical cutting hardness is within 80MPa, and it is not suitable for tunnel construction with higher rock hardness. Domestic TBM tunnel boring machines can achieve full-section cutting, but TBM equipment is expensive, has a long installation and laying distance, and the equipment disassembly and assembly are time-consuming and labor-intensive. Utility Model Content

[0004] To overcome the shortcomings of existing technologies in the full-section construction process of rock tunnels, this utility model aims to provide a compact, rock-breaking, economical, and high-intensity roller-type cutting device.

[0005] This utility model provides a rotary drum cutting device, including a cutting main frame and a cutting drum, a cutter assembly, a drum end panel and end face cutting teeth disposed on the cutting main frame; The main cutting frame is configured as the retainer of the rotary drum cutting device, and the main cutting frame includes a frame body and a cutting reducer mounted on the frame body; the cutting drum is fixedly connected to the drive end of the cutting reducer and rotates by the drive of the cutting reducer. The cutting tool assembly has multiple sets arranged in a circular array along the circumference of the cutting drum. Each set of cutting tool assemblies has multiple pieces arranged at intervals along the central axis of the cutting drum. Each piece of cutting tool assembly is connected to the cutting drum through a hob holder and is used to cut the tunnel surface. The roller end panel is provided with two pieces respectively disposed on the two end faces of the cutting main frame; The end face cutting teeth are provided with two pieces that are respectively connected to the end panels of the two rollers.

[0006] Furthermore, a spraying device is also installed on the cutting main frame. One end of the spraying device is connected to an external water pump, and the other end of the spraying device extends along the central axis of the cutting drum.

[0007] Furthermore, the spraying device is provided with two sets of components symmetrically arranged along the center of the main frame.

[0008] Furthermore, a cutting arm mounting interface is also provided on the cutting main frame, which is located at the center of the end of the frame body away from the cutting drum.

[0009] Furthermore, the cutting drum is positioned horizontally and centered on the cutting host frame, and the central axis of the cutting drum is coaxial with the output axis of the cutting reducer.

[0010] Furthermore, the hobbing cutter holder is provided with multiple pieces that correspond one-to-one with the multiple cutter assemblies, and each hobbing cutter holder is fixedly mounted on the cutting drum by welding.

[0011] Furthermore, the single-piece tool assembly includes a single-edged shaft hob; the single-edged shaft hob is mounted on a hob holder.

[0012] Furthermore, the single-piece tool assembly also includes a limiting component; The limiting assembly includes a hobbing wedge and a fastening screw; The hobbing wedge is provided in two pieces, which are respectively set on the two end faces of the single-blade shaft hobbing cutter arranged along its central axis. Both the single-piece hob wedge and the hob holder have threaded holes for installing fastening screws at the same positions. The hob wedge and the hob holder are connected by the fastening screws, thereby achieving the limiting and fixing of the single-edged shaft hob.

[0013] Furthermore, the single-piece tool assembly also includes an anti-loosening component; The anti-loosening component includes an anti-loosening washer and a wire thread insert; The anti-loosening washer is placed between the fastening screw and the hob wedge, and the wire thread sleeve is placed in the threaded hole on the hob seat.

[0014] As a further embodiment of this utility model, this utility model also provides a full-face tunneling machine, including a cutting boom and a rotary cutter drum cutting device as described above. The cutting arm is detachably connected to the cutting main frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a roller cutter type drum cutting device, which can improve the cutting and rock breaking capacity of a long horizontal axis full-section drum cutting device; it can be used as a cutting replacement part of a tunnel boring machine or rock tunneling machine, and the cutting performance and service life of the whole machine can be directly improved by replacing the cutting device; compared with conventional long horizontal axis drum cutting devices, it has higher economic cutting hardness in rock tunnel construction; compared with TBM tunnel boring machines, the equipment cost is low, and the installation and disassembly are convenient and time-saving and labor-saving.

[0016] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form 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 undue limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the structure of a rotary drum cutting device according to an embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the structure of the main cutting frame; Figure 3 yes Figure 1 Schematic diagram of the medium-sized cutting tool assembly; Figure 4 This is a schematic diagram of a rolling cutter-type drum cutting device used in rock tunnel construction according to an embodiment of this utility model.

[0018] in: Cutting main frame, 1-1, cutting reducer, 1-2, spraying device, 1-3, cutting boom mounting interface, 2, cutting drum, 3, cutter assembly, 3-1, single-blade shaft type hob, 3-2, hob wedge, 3-3, fastening screw, 3-4, anti-loosening washer, 3-5, wire thread sleeve, 4, drum end panel, 5, end face cutting teeth. Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this utility model clearer and easier to understand, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that the accompanying drawings of this utility model are all in a simplified form and use non-precise proportions, and are only used to facilitate and clearly assist in illustrating the implementation of this utility model; the "several" mentioned in this utility model are not limited to the specific number shown in the examples in the drawings; the directions or positional relationships indicated by "front," "middle," "rear," "left," "right," "up," "down," "top," "bottom," and "middle" mentioned in this utility model are all based on the directions or positional relationships shown in the accompanying drawings of this utility model, and do not indicate or imply that the device or component referred to must have a specific orientation, nor should they be construed as limitations on this utility model.

[0020] Example: See Figures 1 to 3 As shown, the present invention provides a rotary cutter drum cutting device for full-section construction of rock tunnels, including a cutting main frame 1 and a cutting drum 2, a cutter assembly 3, a drum end panel 4 and end face cutting teeth 5 disposed on the cutting main frame 1. The main cutting frame 1 is set as the retainer of the rotary drum cutting device, and the main cutting frame 1 includes a frame body and a cutting reducer 1-1 set on the frame body; the cutting drum 2 is fixedly connected to the drive end of the cutting reducer 1-1 and rotates by the drive of the cutting reducer 1-1. The cutter assembly 3 is provided with multiple sets arranged in an array along the circumference of the cutting drum 2. Each set of cutter assembly 3 is provided with multiple pieces arranged at intervals along the central axis of the cutting drum 2. Each piece of cutter assembly 3 is connected to the cutting drum 2 through a hob holder and is used to cut the tunnel surface. The roller end panel 4 is provided with two pieces respectively disposed on the two end faces of the cutting main frame 1; The end face cutting teeth 5 are provided with two pieces that are respectively connected to the two roller end panels 4.

[0021] Preferably, in order to achieve cooling treatment during the cutting process of the rotary drum cutting device, a spraying device 1-2 is also provided on the cutting main frame 1. One end of the spraying device 1-2 is connected to an external water pump, and the other end of the spraying device 1-2 extends along the central axis of the cutting drum 2.

[0022] Further preferably, in order to achieve efficient spraying, the spraying device 1-2 is provided with two sets of devices symmetrically arranged along the center of the main frame.

[0023] Preferably, in order to achieve the connection between the rotary cutter drum cutting device and the full-face tunneling machine, a cutting boom mounting interface 1-3 is also provided on the cutting main frame 1. The cutting boom mounting interface 1-3 is located at the center of the end of the frame body away from the cutting drum 2.

[0024] Preferably, the cutting roller 2 is centrally mounted on the cutting host frame 1 in a horizontal direction, and the central axis of the cutting roller 2 is coaxial with the output axis of the cutting reducer 1-1.

[0025] Preferably, the hobbing cutter holder is provided with multiple pieces that correspond one-to-one with the multiple cutter assemblies 3, and each hobbing cutter holder is fixedly mounted on the cutting drum 2 by welding.

[0026] Preferably, in order to effectively cut the tunnel surface, the single-piece tool assembly 3 includes a single-edged shaft hob 3-1; The single-blade shaft type hob 3-1 is mounted on the hob holder.

[0027] More preferably, in order to achieve relative positioning and fixing between the single-edged shaft hob 3-1 and the hob holder, the single-piece tool assembly 3 also includes a limiting component; The limiting assembly includes a hobbing wedge block 3-2 and a fastening screw 3-3; Two hobbing wedges 3-2 are provided, and the two hobbing wedges 3-2 are respectively set on the two end faces of the single-blade shaft hobbing cutter 3-1 along its central axis. Both the single-piece hob wedge 3-2 and the hob holder have threaded holes for installing fastening screws 3-3 at the same positions. The hob wedge 3-2 is connected to the hob holder by the fastening screws 3-3, thereby achieving the limiting and fixing of the single-blade shaft type hob 3-1.

[0028] More preferably, to prevent the fastening screws 3-3 from loosening during the operation of the rotary cutter, the individual cutter assembly 3 also includes an anti-loosening component; The anti-loosening component includes an anti-loosening washer 3-4 and a wire thread insert 3-5; The anti-loosening washer 3-4 is disposed between the fastening screw 3-3 and the hob wedge block 3-2, and the wire thread sleeve 3-5 is disposed in the threaded hole on the hob holder.

[0029] In a further preferred embodiment, the hub of the single-blade shaft hob 3-1 is made of high-strength wear-resistant material, and there is a sealing ring between the hub and the end cover, making the hob less prone to wear and extending its service life.

[0030] More preferably, an end-face wear-resistant block is welded onto the single-piece roller end panel 4, and mounting holes for mounting the end-face cutting teeth 5 are provided.

[0031] See Figure 4 As shown, the specific process of cutting rock tunnels using the aforementioned rotary cutter drum cutting device is as follows: After all the components of the rotary cutter drum cutting device are installed, it is connected to the cutting arm of the tunneling machine through the reserved installation interface of the cutting machine cutting arm on the cutting host frame. After the roller-type cutting device is connected to the cutting arm of the tunneling machine, the cutting motor inside the cutting arm outputs power to the cutting reducer during operation. The cutting reducer drives the cutting drum to rotate. When the tunneling machine moves forward horizontally, the single-blade roller is squeezed and breaks the rock under the drive of the rotating cutting drum.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotary drum cutting device, characterized in that, It includes a cutting main frame (1) and a cutting roller (2), a cutter assembly (3), a roller end panel (4) and end face cutting teeth (5) disposed on the cutting main frame (1); The main cutting frame (1) is set as the retainer of the rotary drum cutting device, and the main cutting frame (1) includes a frame body and a cutting reducer (1-1) set on the frame body; the cutting drum (2) is fixedly connected to the drive end of the cutting reducer (1-1) and rotates by the drive of the cutting reducer (1-1); The cutting tool assembly (3) is provided with multiple sets arranged in a circumferential array along the cutting drum (2). Each set of cutting tool assemblies (3) is provided with multiple pieces arranged at intervals along the central axis of the cutting drum (2). Each piece of cutting tool assembly (3) is connected to the cutting drum (2) through a hob holder and is used to cut the tunnel surface. The roller end panel (4) is provided with two pieces respectively disposed on the two end faces of the cutting host frame (1); The end face cutting tooth (5) is provided with two pieces that are respectively connected to the two roller end panels (4).

2. The rotary drum cutting device according to claim 1, characterized in that, A spraying device (1-2) is also provided on the cutting main frame (1). One end of the spraying device (1-2) is connected to an external water pump, and the other end of the spraying device (1-2) extends along the central axis of the cutting drum (2).

3. The rotary drum cutting device according to claim 2, characterized in that, The spraying device (1-2) is provided with two sets of devices symmetrically arranged along the center of the main frame.

4. The rotary drum cutting device according to any one of claims 1-3, characterized in that, A cutting arm mounting interface (1-3) is also provided on the cutting main frame (1), and the cutting arm mounting interface (1-3) is located at the center of the end of the frame body away from the cutting drum (2).

5. The rotary drum cutting device according to claim 4, characterized in that, The cutting drum (2) is positioned horizontally and centered on the cutting host frame (1), and the central axis of the cutting drum (2) is coaxial with the output axis of the cutting reducer (1-1).

6. The rotary drum cutting device according to claim 5, characterized in that, The hobbing cutter holder is provided with multiple pieces that correspond one-to-one with the multiple cutter assemblies (3), and each hobbing cutter holder is fixedly mounted on the cutting drum (2) by welding.

7. The rotary drum cutting device according to claim 6, characterized in that, The single-piece tool assembly (3) includes a single-edged shaft hob (3-1); the single-edged shaft hob (3-1) is mounted on a hob holder.

8. The rotary drum cutting device according to claim 6 or 7, characterized in that, The single-piece tool assembly (3) also includes a limiting component; The limiting assembly includes a hobbing wedge (3-2) and a fastening screw (3-3). The hobbing wedge (3-2) is provided in two pieces, and the two hobbing wedges (3-2) are respectively set on the two end faces of the single-blade shaft hobbing cutter (3-1) along its central axis direction; Both the single-piece hob wedge (3-2) and the hob holder have threaded holes for installing fastening screws (3-3) at the same position. The hob wedge (3-2) is connected to the hob holder by fastening screws (3-3), thereby achieving the limiting and fixing of the single-blade shaft type hob (3-1).

9. The rotary drum cutting device according to claim 8, characterized in that, The single-piece tool assembly (3) also includes an anti-loosening component; The anti-loosening component includes an anti-loosening washer (3-4) and a wire thread insert (3-5). The anti-loosening washer (3-4) is placed between the fastening screw (3-3) and the hob wedge (3-2), and the wire thread sleeve (3-5) is placed in the threaded hole on the hob seat.

10. A full-face tunneling machine, characterized in that, Includes a cutting arm and a rotary drum cutting device as described in any one of claims 1-9; The cutting arm is detachably connected to the cutting main frame (1).

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