A mining tunnel boring machine

Abstract

The invention discloses a mining rock tunnel boring machine, comprising a tunneling system, a tightening and propulsion system, a support system, a conveying system, a dust removal system, and a rear supporting system; the tunneling system is composed of a cutter head, a shield, and a main drive, and adopts a belt conveyor layout and a slag transportation method, which is suitable for mine tunneling and is very convenient for cleaning and transporting fallen gangue; the adopted vertical anchor drilling machine is arranged on the main beam and the central axis of the trailer, and is driven by its rotating device, and the drilling angle is perpendicular to the tunnel wall, which meets the mine support requirements, and the adopted vertical anchor drilling machine can synchronously perform anchor drilling for anchor support during the equipment tunneling process, and the digging and support are synchronized to improve the construction efficiency; the dust removal fan uses the steel structure cavity of the main beam and the rear support as the wind tube channel, which improves the space utilization rate and makes the equipment compact. At the same time, the waste generated in the dust removal process can directly fall onto the belt conveyor, which saves the time and work of manual slag cleaning and improves the work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of rock tunnel excavation equipment, and in particular relates to a rock tunnel boring machine for mining. Background Art

[0002] TBM is a machine that uses mechanical energy to break rocks and continuously outputs the fallen rocks backwards. It is now widely used in transportation, water conservancy and other fields. In recent years, its application in the field of coal mining has achieved certain results. Compared with the traditional blasting method of coal mining, TBM has a faster excavation speed, higher support efficiency, better construction safety, and can be applied to different geological conditions. Therefore, TBM is valued by more and more coal mining companies.

[0003] In the structural form of traditional TBM tunneling machines, the anchor drills are mostly symmetrically arranged on both sides of the main beam. When the equipment is stationary, the anchor rods on both sides perform anchoring work. Since the anchor drills are on both sides of the main beam, the holes drilled by the anchor drills cannot be perpendicular to the tunnel wall. The installed anchor rods cannot play the role of safe anchoring required by the mine, which does not meet the requirements of coal mine support. In addition, the working mode of the anchor drill affects the tunneling efficiency of the equipment.

[0004] The main beam of a traditional TBM tunnel boring machine is affected by the support shoes and is arranged with the center of gravity offset upward. The main machine belt conveyor is installed in the inner cavity of the main beam and also transports the slag in an upward posture. The machine head extends from the rear support and overlaps with the second transport machine head. This layout increases the length of the first transport belt conveyor. In addition, since the first transport belt conveyor is arranged inside the main beam and extends through the steel beam to the rear support, when waste rock falls during the tunneling process of the tunnel boring machine, there is no equipment at the main machine position to transport the waste rock away, resulting in waste rock accumulation and difficulty in tunneling. Summary of the invention

[0005] The object of the present invention is to provide a mining rock tunnel boring machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mining rock tunnel boring machine, comprising a boring system, a tightening and propulsion system, a support system, a conveying system, a dust removal system, and a rear supporting system; the boring system is composed of a cutter head, a shield, and a main drive, shields are arranged on the upper, lower, left, and right sides of the main drive, and the cutter head is installed at the end of the main drive;

[0007] The tightening and propulsion system comprises a front main beam, a drilling beam, a transition beam, a sliding beam, a rear support, a propulsion system and a tightening system, wherein the main drive is mounted on the front main beam, the front main beam is connected to the drilling beam, the propulsion system is mounted on both sides of the transition beam and the sliding beam, the tightening system is mounted on the sliding beam, and one end of the propulsion system is connected to the transition beam, and the other end of the propulsion system is connected to the tightening system, one end of the sliding beam is slidably connected to the transition beam, and the other end of the sliding beam is fixedly connected to the rear support;

[0008] The support system includes an advance drilling rig, a vertical anchor drilling rig, and a temporary support. The vertical anchor drilling rig is respectively installed on the front main beam, the drilling rig beam, the drilling rig bracket, and the central axis of the rear supporting system. The advance drilling rig is installed on the transition beam. A temporary support is arranged above the vertical anchor drilling rig installed on the front main beam. The drilling rig beam is fixedly connected to the transition beam.

[0009] The conveying system includes a primary conveyor belt and a secondary conveyor belt. The primary conveyor belt is installed in the inner cavity of the front main beam. The tail of the primary conveyor belt is placed behind the center of the cutter head. The head of the primary conveyor belt extends from the front main beam and is located below the drilling rig beam. The tail of the secondary conveyor belt is located below the head of the primary conveyor belt. The front end of the secondary conveyor belt is located below the tensioning and propulsion system.

[0010] Preferably, the dust removal system comprises a dust removal fan, which is installed in the inner cavity of the steel structure of the rear support, the rear supporting system is connected to the rear support, and the drilling rig support is installed between the rear supporting system and the rear support.

[0011] Preferably, the temporary support is provided with convex support plates on both sides, and a U-shaped structure is formed between adjacent support plates.

[0012] Preferably, the steel structure cavity in the tightening and propulsion system is used as a wind tube channel.

[0013] Preferably, the front main beam and the drilling rig beam are arranged with the center of gravity downward, and space for personnel operation is reserved on the upper parts of the front main beam and the drilling rig beam.

[0014] Preferably, the shape and size of the end portion of the sliding beam matches the shape and size of the end portion of the transition beam.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the belt conveyor layout and the slag transportation method adopted in the present invention are suitable for mine tunnel excavation and are very convenient for cleaning and transporting fallen gangue;

[0016] The vertical anchor drilling rig is arranged on the main beam and the center axis of the trailer, and driven by its slewing device. The drilling angle is perpendicular to the wall, which meets the mine support requirements and has high support efficiency. It meets the characteristics of large mine tunnel support. The vertical anchor drilling rig can perform anchor drilling for anchor support during the equipment excavation process, and the excavation and support are synchronized to improve the construction efficiency.

[0017] The dust removal fan uses the steel structure cavity of the main beam and the rear support as the wind tube channel, which greatly improves the space utilization rate and makes the equipment compact. At the same time, the waste generated during the dust removal process can fall directly onto the belt conveyor, saving the time and work of manual slag cleaning and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a mining rock tunnel boring machine of the present invention;

[0019] In the figure: 1. Cutterhead; 2. Shield; 3. Main drive; 4. Temporary support; 5. Vertical anchor drilling rig; 6. Front main beam; 7. Drilling rig beam; 8. Advance drilling rig; 9. Transition beam; 10. Sliding beam; 11. Propulsion system; 12. Bracing system; 13. Rear support; 14. Dust removal fan; 15. Drilling rig bracket; 16. Rear supporting system; 17. First conveyor belt; 18. Second conveyor belt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0021] See also Figure 1 The present invention provides a technical solution: a mining rock tunnel boring machine, including a boring system, a tightening and propulsion system, a support system, a conveying system, a dust removal system, and a rear supporting system 16; the boring system is composed of a cutter head 1, a shield 2, and a main drive 3, and the shield 2 is arranged on the upper, lower, left, and right sides of the main drive 3, and the cutter head 1 is installed at the end of the main drive 3;

[0022] The tightening propulsion system comprises a front main beam 6, a drilling beam 7, a transition beam 9, a sliding beam 10, a rear support 13, a propulsion system 11 and a tightening system 12. The main drive 3 is installed on the front main beam 6, the front main beam 6 is connected to the drilling beam 7, the propulsion system 11 is installed on both sides of the transition beam 9 and the sliding beam 10, the tightening system 12 is installed on the sliding beam 10, and one end of the propulsion system 11 is connected to the transition beam 9, the other end of the propulsion system 11 is connected to the tightening system 12, one end of the sliding beam 10 is slidably connected to the transition beam 9, and the other end of the sliding beam 10 is fixedly connected to the rear support 13;

[0023] The support system includes an advance drilling rig 8, a vertical anchor drilling rig 5, and a temporary support 4. The vertical anchor drilling rig 5 is respectively installed on the central axis of the front main beam 6, the drilling rig beam 7, the drilling rig support 15, and the rear supporting system 16. The advance drilling rig 8 is installed on the transition beam 9. A temporary support 4 is arranged above the vertical anchor drilling rig 5 installed on the front main beam 6. The drilling rig beam 7 is fixedly connected to the transition beam 9.

[0024] The conveying system includes a primary conveyor belt 17 and a secondary conveyor belt 18. The primary conveyor belt 17 is installed in the inner cavity of the front main beam 6. The tail of the primary conveyor belt 17 is placed at the rear side of the center of the cutter head 1. The head of the primary conveyor belt 17 extends from the front main beam 6 and is located below the drilling rig beam 7. The tail of the secondary conveyor belt 18 is located below the head of the primary conveyor belt 17. The front end of the secondary conveyor belt 18 is located below the tensioning and propulsion system.

[0025] The dust removal system includes a dust removal fan 14 , which is installed in the inner cavity of the steel structure of the rear support 13 . The rear supporting system 16 is connected to the rear support 13 , and the drilling rig support 15 is installed between the rear supporting system 16 and the rear support 13 .

[0026] In this embodiment, preferably, the temporary support 4 is provided with convex support plates on both sides, and a U-shaped structure is formed between adjacent support plates in order to play a good supporting role.

[0027] In this embodiment, preferably, the steel structure cavity in the propulsion system is used as a wind tube channel to facilitate dust removal work.

[0028] In this embodiment, preferably, the front main beam 6 and the drilling rig beam 7 are arranged with the center of gravity downward, and a space for personnel operation is reserved on the upper parts of the front main beam 6 and the drilling rig beam 7 for convenient operation.

[0029] In this embodiment, preferably, the shape and size of the end of the sliding beam 10 matches the shape and size of the end of the transition beam 9 to ensure stable sliding.

[0030] The working principle and use process of the present invention are as follows: the shield 2 of the tunnel boring machine is equipped with a main drive 3, which drives the cutter head 1 to rotate to realize tunnel excavation; the propulsion systems 11 on the left and right sides of the tension propulsion system are connected to the tension system 12, which has two degrees of freedom of up and down and left and right rotation. Under the telescopic action of the oil cylinder of the propulsion system 11, the tunnel boring machine and the rear supporting system 16 are driven forward and backward. The tension system 12 provides the entire tunnel boring machine with a forward support force and resists the torque generated during the tunneling process of the cutter head 1; when the equipment is excavating, the rear support 13 moves forward together with the sliding beam 10; when the tunnel boring machine needs to change steps, the shoe plate of the rear support 13 drops to the cave wall to bear the weight of the rear of the machine;

[0031] The front main beam 6, the drilling beam 7, the transition beam 9, the drilling support 15, and the rear supporting system 16 are equipped with temporary support 4, vertical anchor drilling rig 5, and advance drilling rig 8. The operator stands on the equipment, uses the temporary support 4 as protection, and realizes the support and advance drilling of the tunnel by operating the vertical anchor drilling rig 5 and the advance drilling rig 8;

[0032] The first conveyor belt 17 starts to transport slag from the rear side of the center of the cutter disc 1. It passes through the cavity of the front main beam 6. The head of the first conveyor belt 17 is located below the main beam 7, and the tail of the second conveyor belt 18 is located below the head of the first conveyor belt 17, so as to realize the transfer of the slag on the first conveyor belt 17. The transportation trajectory of the slag on the second conveyor belt 18 is a straight line, and the slag is transported upward to the rear of the rear supporting system 16.

[0033] The dust removal fan 14 is installed inside the steel structure of the rear support 13, and the steel structure cavity in the tunnel boring machine is used as the wind tube channel; the waste slag outlet of the dust removal fan 14 is directly opposite to the secondary conveyor belt 18, and the waste generated by the dust removal fan 14 during the dust removal process falls directly onto the secondary conveyor belt 18 and is directly transported out by the secondary conveyor belt 18.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mining tunnel boring machine, comprising a tunneling system, a tightening and propulsion system, a support system, a conveying system, a dust removal system, and a rear supporting system (16); characterized in that: The tunneling system is composed of a cutterhead (1), a shield (2), and a main drive (3); shields (2) are arranged on four sides of the main drive (3); and the cutterhead (1) is installed at the end of the main drive (3); The tightening propulsion system comprises a front main beam (6), a drilling beam (7), a transition beam (9), a sliding beam (10), a rear support (13), a propulsion system (11) and a tightening system (12); the main drive (3) is mounted on the front main beam (6), the front main beam (6) is connected to the drilling beam (7), the propulsion system (11) is mounted on both sides of the transition beam (9) and the sliding beam (10), the tightening system (12) is mounted on the sliding beam (10), one end of the propulsion system (11) is connected to the transition beam (9), the other end of the propulsion system (11) is connected to the tightening system (12), one end of the sliding beam (10) is slidably connected to the transition beam (9), and the other end of the sliding beam (10) is fixedly connected to the rear support (13); The support system comprises an advance drilling rig (8), a vertical anchor drilling rig (5), and a temporary support (4); the vertical anchor drilling rig (5) is respectively mounted on the central axis of a front main beam (6), a drilling rig beam (7), a drilling rig support (15), and a rear supporting system (16); the advance drilling rig (8) is mounted on a transition beam (9); a temporary support (4) is arranged above the vertical anchor drilling rig (5) mounted on the front main beam (6); and the drilling rig beam (7) is fixedly connected to the transition beam (9); The conveying system comprises a first conveyor belt (17) and a second conveyor belt (18), wherein the first conveyor belt (17) is installed in the inner cavity of the front main beam (6), the tail of the first conveyor belt (17) is placed at the rear side of the center of the cutter head (1), the head of the first conveyor belt (17) extends from the front main beam (6) and is located below the drilling rig beam (7), the tail of the second conveyor belt (18) is located below the head of the first conveyor belt (17), and the front end of the second conveyor belt (18) is located below the tensioning and propulsion system; The dust removal system comprises a dust removal fan (14), wherein the dust removal fan (14) is installed in the inner cavity of the steel structure of the rear support (13), the rear supporting system (16) is connected to the rear support (13), and the drilling rig support (15) is installed between the rear supporting system (16) and the rear support (13).

2. A mining tunnel boring machine according to claim 1, characterized in that: The temporary support (4) is provided with convex support plates on both sides, and a U-shaped structure is formed between adjacent support plates.

3. A mining tunnel boring machine according to claim 1, characterized in that: The steel structure cavity in the tightening and propulsion system is used as a wind tube channel.

4. A mining tunnel boring machine according to claim 1, characterized in that: The front main beam (6) and the drilling rig beam (7) are arranged with their center of gravity downward, and a space for personnel operation is reserved on the upper parts of the front main beam (6) and the drilling rig beam (7).

5. A mining tunnel boring machine according to claim 1, characterized in that: The shape and size of the end portion of the sliding beam (10) match the shape and size of the end portion of the transition beam (9).

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