Heading machine with double cutting mechanisms

Abstract

The invention belongs to the technical field of underground roadway tunneling, and particularly relates to a cutting mechanism and a tunneling machine. Comprising a machine body arranged on a walking mechanism, a loading mechanism and a cutting mechanism are installed at the front end of the machine body, and a conveying mechanism is installed at the tail end of the machine body. According to the structural design of the double cutting mechanisms, the cutting mechanisms are integrally designed, and the size is small; and various cutting modes (paths) of the double-cutting mechanism can also realize the shaping of the underground roadway.

Description

Technical Field

[0001] The invention belongs to the technical field of underground tunnel excavation, in particular to a tunneling machine with a double cutting mechanism. Background Art

[0002] Cantilevered TBMs are the main equipment for underground tunnel development. Currently, there are longitudinal, transverse and drum TBMs in use underground. Drum TBMs are mostly used for cutting softer coal and rock. Most of the above-mentioned tunneling equipment are single-axis TBMs. The longitudinal and transverse TBMs have poor one-time tunneling capabilities and need to be repeatedly adjusted for cutting. Although drum TBMs can achieve one-time tunneling, they have poor cutting capabilities and are only suitable for cutting softer coal and rock. At present, dual-cutting mechanism TBMs have appeared, but most of them are simple combinations of two single-axis TBMs. Their operating systems are complex, they are bulky, and there is a risk of collision between the two cutting arms. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a roadheader with a double cutting mechanism.

[0004] The present invention adopts the following technical scheme: a tunnel boring machine with double cutting mechanisms, comprising a fuselage, wherein the fuselage is arranged on a walking mechanism, a loading mechanism and a cutting mechanism are installed at the front end of the fuselage, and a transport mechanism is installed at the rear end of the fuselage.

[0005] The cutting mechanism comprises a right cutting part and a left cutting part; The right cutting part includes: A right cutting head, wherein the right cutting head is driven to rotate by a right cutting drive to achieve cutting and crushing of coal / rock; A right cutting fixture, the right cutting fixture is used to install a right cutting head and a right cutting drive, and a right swing cylinder ear seat I is arranged on the right cutting fixture; The left cutting part has the same structure as the right cutting part; The tails of the right cutting part and the left cutting part are mounted on the rotating mechanism; The rotating mechanism is installed in the middle of the longitudinal swing mechanism and can perform self-rotation motion; The longitudinal swing mechanism is installed on the supporting frame.

[0006] In some embodiments, the tail of the right cutting part is hinged to the rotating mechanism, and a right swing cylinder is connected between the right cutting part and the rotating mechanism to enable the right cutting part to swing around the hinge point; the left cutting part is hinged to the rotating mechanism, and a left swing cylinder is connected between the left cutting part and the rotating mechanism to enable the left cutting part to swing around the hinge point.

[0007] In some embodiments, the rotating mechanism includes a cylindrical stepped shaft, a gear tooth is designed in the middle of the stepped shaft, the stepped shaft is installed in the middle of the longitudinal swing mechanism, and the rotating mechanism rotates relative to the longitudinal swing mechanism.

[0008] In some embodiments, the longitudinal oscillation mechanism comprises: Bearing I and bearing II, wherein bearing I and bearing II are arranged front and back and used for mounting the stepped shaft; Two rack oil cylinders, the cylinder rods of the rack oil cylinders are racks, and the two rack oil cylinders are meshed with the gear teeth in the middle of the stepped shaft.

[0009] In some embodiments, a longitudinal ear seat is arranged on the rear side of the top of the support frame, a longitudinal cylinder connecting rod is arranged at the tail of the longitudinal swing mechanism, and a longitudinal swing cylinder is connected between the longitudinal ear seat and the longitudinal cylinder connecting rod, so that the longitudinal swing mechanism can swing longitudinally relative to the support frame around the rotating pin shaft under the drive of the longitudinal swing cylinder.

[0010] In some embodiments, a top support is arranged on the top of the support frame, and the top support includes two side top supports and one vertical top support, which are used to realize the contraction and extension of the top support; A bottom support is arranged at the lower part of the support frame, and the bottom support includes a left support and a right support, which are used to realize the contraction and extension of the bottom support.

[0011] In some embodiments, a propulsion cylinder is connected between the fuselage and the top of the support frame, a support frame guide is arranged between the bottom of the support frame and the bottom of the fuselage, a guide groove is arranged on the fuselage, and the support frame guide slides along the guide groove.

[0012] In some embodiments, fuselage supports are arranged on both sides of the fuselage.

[0013] In some embodiments, the tunnel boring machine drives into the tunnel to be excavated through the traveling mechanism, and when the cutting mechanism reaches the cutting head, multiple fuselage supports are extended and contact the tunnel floor until the traveling mechanism leaves the ground, at which time the top support and bottom support on the cutting mechanism are extended to contact the top plate and the bottom plate respectively, and the cutting mechanism is firmly fixed in the working tunnel, providing a stable cutting support force for the cutting mechanism; The transport mechanism, loading mechanism and cutting mechanism of the roadheader are started in sequence. At this time, the right cutting part and the left cutting part of the cutting mechanism work simultaneously. The cutting mechanism is pushed to complete the vertical feed cutting by extending the thrust cylinder for a certain distance. Then the cutting mechanism performs cross-section expansion cutting, and the longitudinal swing cylinder drives the longitudinal swing mechanism to perform pitching motion, thereby realizing the longitudinal pitch cutting of the entire mechanism. The longitudinal swing mechanism drives the rotating mechanism to rotate, thereby realizing the rotary cutting of the cutting mechanism; The left swing cylinder and the right swing cylinder respectively drive the left cutting part and the right cutting part to swing and cut, thereby realizing the horizontal swing cutting of the cutting mechanism; The left and right cutting parts are the direct rock breaking bodies, which realize the extended cutting of the excavation working face through longitudinal swing, rotational movement and horizontal swing; The coal and rock cut off by the cutting mechanism are transported to the rear of the tunnel boring machine through the loading mechanism and the transport mechanism; At this point, a cutting cycle is completed, and the above steps are repeated to realize the development of the underground tunnel.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The structural design of the double cutting mechanism of the present invention is an integrated design of the cutting mechanism, and the volume is small; 2. The multiple cutting modes (paths) of the double cutting mechanism of the present invention can also realize the shaping of underground tunnels; 3. The present invention provides the possibility for exploring different cutting methods.

[0015] 4. The present invention is free from the integration of traditional double-cutting tunneling machines and is easy to operate; 5. The rack oil cylinder of the present invention can provide a stable and reliable cutting force for the cutting mechanism in rotary cutting, and has a small size; 6. The cutting range of the present invention is large, and full-section cutting can be achieved, and the machine body does not need to be repeatedly adjusted; 7. The push-feeding method of the present invention reduces the damage to the walking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main view of the tunnel boring machine; Figure 2 This is a top view of the tunnel boring machine; Figure 3 It is a schematic diagram of the cutting mechanism I; Figure 4 It is the schematic diagram of the cutting mechanism II; Figure 5 It is a top view of the cutting mechanism; Figure 6 It is a cross-sectional view of the longitudinal swing mechanism; Figure 7 Swing left and right for cutting of the tunnel boring machine; Figure 8 Pitch cutting for the tunnel boring machine; Fig. 9 Rotary cutting (shaping) for roadheaders. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] like Figure 3 As shown, a cutting mechanism comprises a right cutting part 11 and a left cutting part 12; The right cutting part 11 comprises: A right cutting head 1101, wherein the right cutting head 1101 is driven to rotate by a right cutting drive 1102 to cut and crush coal / rock; The right cutting fixture 1103 is used to install the right cutting head 1101 and the right cutting drive 1102, and the right cutting fixture 1103 is provided with a right swing cylinder ear seat I 1104; The tails of the right cutting part 11 and the left cutting part 12 are mounted on the rotating mechanism 13; The rotating mechanism 13 is installed in the middle of the longitudinal swing mechanism 16 and can perform self-rotation motion; The longitudinal swing mechanism 16 is mounted on a support frame 17 .

[0019] Specifically, the right cutting part 11 includes a right cutting head 1101, a right cutting drive 1102, a right cutting fixed 1103 and a right swing cylinder ear seat I 1104; the left cutting part 12 includes a left cutting head 1201, a left cutting drive 1202, a left cutting fixed 1203, and a left swing cylinder ear seat I 1204; the rotating mechanism 13 includes a right rotating pin 1301, a left rotating pin 1302, a left swing cylinder ear seat II 1303, a right swing cylinder ear seat II 1304 and a stepped shaft 1305 (middle part The longitudinal swing mechanism 16 includes a bearing Ⅰ1601, a bearing Ⅱ1602, a rack cylinder 1603, a rotating pin 1604, and a longitudinal cylinder connecting rod 1605; the support frame 17 includes a rotating pin hole 1701, a longitudinal ear seat 1702, a push ear seat 1703, a shovel plate lifting ear seat 1704 and a support frame guide 1705; the top support 19 includes a side top support 1901 and a vertical top support 1902; the bottom support 110 includes a left support 11001 and a right support 11002.

[0020] The tail of the right cutting part 11 is hinged to the rotating mechanism 13, and a right swing cylinder 15 is connected between the right cutting part 11 and the rotating mechanism 13 to enable the right cutting part 11 to swing around the hinge point; the left cutting part 12 is hinged to the rotating mechanism 13, and a left swing cylinder 14 is connected between the left cutting part 12 and the rotating mechanism 13 to enable the left cutting part 12 to swing around the hinge point.

[0021] The rotating mechanism 13 includes a columnar stepped shaft 1305 , a gear tooth is designed in the middle of the stepped shaft 1305 , and the stepped shaft 1305 is installed in the middle of the longitudinal swing mechanism 16 . The rotating mechanism 13 rotates relative to the longitudinal swing mechanism 16 .

[0022] The longitudinal swing mechanism 16 comprises: Bearing I 1601 and bearing II 1602, the bearing I 1601 and bearing II 1602 are arranged front and back for mounting the stepped shaft 1305; Two rack cylinders 1603 , the cylinder rods of the rack cylinders 1603 are racks, and the two rack cylinders 1603 are meshed with the gear teeth in the middle of the stepped shaft 1305 .

[0023] A longitudinal ear seat 1702 is arranged on the rear side of the top of the support frame 17, a longitudinal cylinder connecting rod 1605 is arranged at the tail of the longitudinal swing mechanism 16, and a longitudinal swing cylinder 18 is connected between the longitudinal ear seat 1702 and the longitudinal cylinder connecting rod 1605, so that the longitudinal swing mechanism 16 can swing longitudinally around the rotating pin 1604 relative to the support frame 17 under the drive of the longitudinal swing cylinder 18.

[0024] A top support 19 is arranged on the top of the support frame 17. The top support 19 includes two side top supports 1901 and a vertical top support 1902, which are used to realize the contraction and extension of the top support; A bottom support 110 is arranged at the lower part of the support frame 17. The bottom support 110 includes a left support 11001 and a right support 11002, which are used to realize contraction and extension of the bottom support.

[0025] Specifically, the two cutting parts are located at the front end of the entire cutting mechanism 1, namely the right cutting part 11 and the left cutting part 12, and the two have similar structures, wherein the front end of the right cutting part 11 is the right cutting head 1101, and the right cutting head 1101 is driven to rotate by the right cutting drive 1102 to achieve the cutting and crushing of coal / rock; the right cutting head 1101 and the right cutting drive 1102 are fixedly connected to the right cutting fixture 1103, and the right cutting fixture 1103 is provided with a right swing cylinder ear seat Ⅰ1104; similarly, the front end of the left cutting part 12 is the left cutting head 1201, and the left cutting head 1201 is driven to rotate by the left cutting drive 1202 to achieve the cutting and crushing of coal / rock; the left cutting head 1102 and the left cutting drive 1 202 is fixed on the left cutting fixture 1203, and the left cutting fixture 203 is provided with a left swing cylinder ear seat Ⅰ1204; the right cutting part 11 is hinged to the rotating mechanism 13 through the right rotating pin 1301, and the right swing cylinder 15 hinges the right swing cylinder ear seat Ⅰ1104 and the right swing cylinder ear seat Ⅱ1304, so that the right cutting part 11 can rotate around the right rotating pin 1301, that is, the right cutting part 11 can rotate left / right relative to the rotating mechanism 13; similarly, the left cutting part 12 is hinged to the rotating mechanism 13 through the left rotating pin 1302, and the left swing cylinder 14 hinges the left swing cylinder ear seat Ⅰ1204 and the left swing cylinder ear seat Ⅱ1303, so that the left cutting part 12 can rotate around the left rotating pin 13 02, that is, the left cutting part 12 is swung left / right relative to the rotating mechanism 13; wherein the left swing cylinder ear seat II 1303 is located at the upper part of the rotating mechanism 13, and the right swing cylinder ear seat II 1304 is located in the middle groove of the rotating mechanism 13, thereby realizing the staggered arrangement of the left swing cylinder 14 and the right swing cylinder 15; the rear part of the rotating mechanism 13 is a columnar stepped shaft 1305, and the middle part of the stepped shaft 1305 is designed with gear teeth. The stepped shaft 1305 cooperates with the bearing I 1601 and the bearing II 1602 arranged in the middle part of the longitudinal swing mechanism 16, so that the rotating mechanism 13 can rotate relative to the longitudinal swing mechanism 16; two rack cylinders 1603 (that is, the cylinder rod is a rack) are arranged inside the longitudinal swing mechanism 16, and the two The rack cylinder 1603 is meshed with the gear teeth in the middle of the stepped shaft 1305, thereby providing sufficient power for the rotation of the rotating mechanism 13 relative to the longitudinal swing mechanism 16; rotating pins 1604 are arranged on both sides of the longitudinal swing mechanism 16, and the rotating pins 1604 form a rotational fit with the pin holes 1701 on the support frame 17, and a longitudinal cylinder connecting rod 1605 is arranged at the tail of the longitudinal swing mechanism 16, one end of the longitudinal swing cylinder 18 is hinged to the longitudinal ear seat 1702 on the support frame 17, and the other end is hinged to the longitudinal cylinder connecting rod 1605 of the longitudinal swing mechanism 16, so that the longitudinal swing mechanism 16 can swing longitudinally (pitch cutting) relative to the support frame 17 around the rotating pin 1604 under the drive of the longitudinal swing cylinder 18.

[0026] A top support 19 is arranged on the top of the support frame 17, and the top support 19 includes two side top supports 1901 and a vertical top support 1902. The main structure of the top support 19 is a cylinder leg structure, which can realize contraction and extension of the top support; a bottom support 110 is arranged on the lower part of the support frame 17, and the bottom support 110 includes a left support 11001 and a right support 11002. The bottom support 110 is a cylinder leg structure, which can realize contraction and extension of the bottom support.

[0027] A roadheader comprises a body 5, wherein the body 5 is arranged on a walking mechanism 7, a loading mechanism 2 and a cutting mechanism 1 are installed at the front end of the body 5, and a transport mechanism 6 is installed at the rear end of the body 5.

[0028] The loading mechanism 2 includes a shovel body 201 , a loading star wheel 202 , and a loading pin shaft 203 ; the fuselage 5 includes a fuselage support 501 and a guide groove 502 ; and the transport mechanism 6 includes a transport drive 601 and a transport chain 602 .

[0029] The propulsion cylinder 4 is connected between the fuselage 5 and the top of the support frame 17 , and the bottom of the support frame 17 is hingedly connected to the bottom of the fuselage 5 .

[0030] The front end of the tunnel boring machine of the present invention is a cutting mechanism 1. One end of the lifting cylinder 3 is hinged to the shovel lifting ear seat 1704 of the support frame 17 on the cutting mechanism 1, and the other end is hinged to the loading mechanism 2. The loading mechanism 2 is located below the cutting mechanism 1. The loading mechanism 2 is rotatably connected to the transportation mechanism 6 through the loading pin 203. Under the action of the lifting cylinder 3, the loading mechanism 3 can be rotated relative to the transportation mechanism 6 around the loading pin 203 to realize the lifting and lowering of the loading mechanism 2. Two loading star wheels 202 are arranged on the loading mechanism 2. The loading star wheels 202 can be rotated to pull the coal and rock cut by the cutting mechanism 1 onto the transportation mechanism 6; the transportation mechanism 6 runs through the middle of the fuselage 5 and can slide relative to the fuselage 5. The transportation drive 60 on the transportation mechanism 6 1 drives the transport chain 602 and transports the coal and rock scraped by the loading mechanism 2 to the rear of the roadheader; the fuselage 5 is located at the rear side of the cutting mechanism 1, and the fuselage 5 is hinged with the push ear seat 1703 on the cutting mechanism 1 through multiple propulsion cylinders 4, and the support frame guide 1705 on the cutting mechanism 1 cooperates with the guide groove 502 of the fuselage 5. Under the drive of the propulsion cylinder 4, the cutting mechanism 1 can realize forward movement relative to the fuselage 5, that is, vertical feed; fuselage supports 501 are arranged on both sides of the fuselage 5, and the fuselage supports 501 are cylinder leg structures, which can provide support for the fuselage 5 when the roadheader is on-board cutting; the lower part of the fuselage 5 is fixedly connected with a walking mechanism 7, which provides power for the walking of the entire roadheader, and the figure is a crawler-type walking mechanism.

[0031] Workflow: The entire roadheader drives into the tunnel to be excavated through the traveling mechanism 7. When the cutting mechanism 1 of the roadheader reaches the cutting head, the multiple body supports 501 are extended and contact the tunnel floor until the traveling mechanism 7 leaves the ground. At this time, the top support 9 and the bottom support 10 on the cutting mechanism 1 of the roadheader are extended to contact the top plate and the bottom plate respectively. The cutting mechanism is firmly fixed in the working tunnel through the oil cylinder and the support leg structure, providing a stable cutting support force for the cutting mechanism. The fuselage 5 is equipped with the electronic control system and power device required for the tunnel boring machine. The tunnel boring machine power device is started, and the tunnel boring machine transportation mechanism 6, the loading mechanism 2 and the cutting mechanism 1 are started in sequence. At this time, the right cutting part 11 and the right cutting head 1101 and the left cutting head 1201 of the left cutting part 12 of the cutting mechanism 1 rotate simultaneously (depending on the cutting requirements, the rotation directions can be the same or opposite), and the cutting mechanism 1 is pushed to complete the vertical feed cutting by extending the thrust cylinder 4 for a certain distance; then the cutting mechanism 1 performs cross-section expansion cutting, and the longitudinal swing cylinder 18 can drive the longitudinal swing mechanism 16 to perform pitching motion to achieve the longitudinal pitch cutting of the entire mechanism 1; the longitudinal swing mechanism 1 The rack oil cylinder inside 6 can drive the rotating mechanism 13 to rotate, thereby realizing the rotary cutting of the cutting mechanism 1; the left swing oil cylinder 14 and the right swing oil cylinder 15 respectively drive the left cutting part 12 and the right cutting part 11 to swing and cut, realizing the horizontal swing cutting of the cutting mechanism 1; the left cutting part 12 and the right cutting part 11 are the direct rock breaking bodies, which are mainly driven by the cutting part to drive the cutting head to rotate and make circular motion (the cutting head can also be the horizontal axis), and through the above-mentioned longitudinal swing, rotational movement and horizontal swing, the extended cutting of the excavation working face is realized. The entire cutting mechanism has many degrees of freedom, and can realize different forms of cutting mode combinations, and the equipment has the function of tunnel shaping. The coal and rock cut by the cutting mechanism 1 can be transported to the rear of the tunneling machine through the loading mechanism 2 and the transportation mechanism 6. The support frame 17 has a built-in rack oil cylinder, which can realize the stable rotation cutting of the entire cutting mechanism. The design structure is compact and can provide a large rotation cutting force. The vertical feed method of push is used to reduce the damage of the reaction force of the feed to the travel drive and the push can provide greater thrust. So far, a cutting cycle is completed, and the above working steps are repeated to realize the development of the underground tunnel.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A roadheader with a double cutting mechanism, characterized in that: The machine comprises a body (5), wherein the body (5) is arranged on a walking mechanism (7), a loading mechanism (2) and a cutting mechanism (1) are installed at the front end of the body (5), and a transport mechanism (6) is installed at the rear end of the body (5).

2. The tunnel boring machine with double cutting mechanism according to claim 1, characterized in that: The cutting mechanism (1) comprises a right cutting part (11) and a left cutting part (12); The right cutting part (11) comprises: A right cutting head (1101), wherein the right cutting head (1101) is driven to rotate by a right cutting drive (1102) to achieve cutting and crushing of coal / rock; A right cutting fixture (1103), wherein the right cutting fixture (1103) is used to install a right cutting head (1101) and a right cutting drive (1102), and a right swing cylinder ear seat I (1104) is provided on the right cutting fixture (1103); The left cutting portion (12) has the same structure as the right cutting portion (11); The tails of the right cutting part (11) and the left cutting part (12) are mounted on the rotating mechanism (13); The rotating mechanism (13) is installed in the middle of the longitudinal swing mechanism (16) and can perform self-rotation motion; The longitudinal swing mechanism (16) is mounted on a support frame (17).

3. The tunnel boring machine with double cutting mechanism according to claim 1, characterized in that: The tail of the right cutting part (11) is hinged to the rotating mechanism (13), and a right swing cylinder (15) is connected between the right cutting part (11) and the rotating mechanism (13) for enabling the right cutting part (11) to swing around the hinge point; the left cutting part (12) is hinged to the rotating mechanism (13), and a left swing cylinder (14) is connected between the left cutting part (12) and the rotating mechanism (13) for enabling the left cutting part (12) to swing around the hinge point.

4. The tunnel boring machine with double cutting mechanism according to claim 3, characterized in that: The rotating mechanism (13) comprises a columnar stepped shaft (1305), the middle portion of the stepped shaft (1305) being provided with gear teeth, the stepped shaft (1305) being mounted in the middle portion of the longitudinal swing mechanism (16), and the rotating mechanism (13) rotates relative to the longitudinal swing mechanism (16).

5. The tunnel boring machine with double cutting mechanism according to claim 4, characterized in that: The longitudinal swing mechanism (16) comprises: Bearing I (1601) and bearing II (1602), wherein bearing I (1601) and bearing II (1602) are arranged front and back and used for mounting the stepped shaft (1305); Two rack cylinders (1603), the cylinder rods of the rack cylinders (1603) are racks, and the two rack cylinders (1603) are meshed with the gear teeth in the middle of the stepped shaft (1305).

6. The tunnel boring machine with double cutting mechanism according to claim 5, characterized in that: A longitudinal ear seat (1702) is arranged at the rear side of the top of the support frame (17); a longitudinal cylinder connecting rod (1605) is arranged at the tail of the longitudinal swing mechanism (16); a longitudinal swing cylinder (18) is connected between the longitudinal ear seat (1702) and the longitudinal cylinder connecting rod (1605), so that the longitudinal swing mechanism (16) can swing longitudinally relative to the support frame (17) around the rotating pin (1604) under the drive of the longitudinal swing cylinder (18).

7. The tunnel boring machine with double cutting mechanism according to claim 6, characterized in that: A top support (19) is arranged on the top of the support frame (17), and the top support (19) comprises two side top supports (1901) and a vertical top support (1902), and is used to realize the contraction and extension of the top support; A bottom support (110) is arranged at the lower part of the support frame (17), and the bottom support (110) comprises a left support (11001) and a right support (11002), which are used to realize contraction and extension of the bottom support.

8. The tunnel boring machine with double cutting mechanism according to claim 7, characterized in that: A propulsion cylinder (4) is connected between the fuselage (5) and the top of the support frame (17); a support frame guide (1705) is provided at the bottom of the support frame (17) and the bottom of the fuselage (5); a guide groove (502) is provided on the fuselage (5); and the support frame guide (1705) slides along the guide groove (502).

9. The tunnel boring machine with double cutting mechanism according to claim 8, characterized in that: Fuselage supports (501) are arranged on both sides of the fuselage (5).

10. The tunnel boring machine with double cutting mechanism according to claim 9, characterized in that: The tunnel boring machine enters the tunnel to be excavated via the walking mechanism (7), and when the cutting mechanism (1) reaches the cutting front, the plurality of machine body supports (501) are extended and contact the tunnel floor until the walking mechanism (7) leaves the ground. At this time, the top support (9) and the bottom support (10) on the cutting mechanism (1) are extended so as to contact the top plate and the bottom plate respectively, so that the cutting mechanism (1) is firmly fixed in the working tunnel, thereby providing the cutting mechanism (1) with a stable cutting support force; The tunnel boring machine transport mechanism (6), the loading mechanism (2) and the cutting mechanism (1) are started in sequence. At this time, the right cutting part (11) and the left cutting part (12) of the cutting mechanism (1) work simultaneously, and the cutting mechanism (1) is pushed to complete vertical feed cutting by extending the thrust cylinder (4) for a certain distance; then, the cutting mechanism (1) performs cross-section expansion cutting, and the longitudinal swing cylinder (18) drives the longitudinal swing mechanism (16) to perform pitching motion, thereby achieving longitudinal pitch cutting of the entire mechanism (1); The longitudinal swing mechanism (16) drives the rotating mechanism (13) to rotate, thereby realizing rotary cutting of the cutting mechanism (1); The left swing oil cylinder (14) and the right swing oil cylinder (15) respectively drive the left cutting part (12) and the right cutting part (11) to swing and cut, thereby realizing horizontal swing cutting of the cutting mechanism (1); The left cutting part (12) and the right cutting part (11) are direct rock breaking bodies, and achieve extended cutting of the excavation working face through longitudinal swing, rotational movement and horizontal swing; The coal and rock cut by the cutting mechanism (1) are transported to the rear of the tunnel boring machine through the loading mechanism (2) and the transport mechanism (6); At this point, a cutting cycle is completed, and the above steps are repeated to realize the development of the underground tunnel.

Images