Ultra-small turning main beam type mining TBM main machine

Abstract

The invention discloses an ultra-small turning main beam type mining TBM main machine, and belongs to the technical field of full-section hard rock tunnel boring machines. A main beam of the main machine is hinged to a driving box, a sliding sleeve and a supporting shoe are arranged in the middle of the main beam, and main pushing oil cylinders symmetrically arranged on the two sides of the main beam serve as adjusting parts between the sliding sleeve and the driving box and are used for adjusting the relative angle of the sliding sleeve and the driving box. An anti-torsion mechanism is arranged between the driving box and the main beam and comprises an anti-torsion oil cylinder, an anti-collision block and a limiting seat; and an anchor rod drilling machine and an arch frame mounting machine are arranged in the middle of the main beam. According to the ultra-small turning main beam type mining TBM main machine, the problem that a main beam type TBM cannot adapt to the small turning working condition of a roadway is solved, meanwhile, the defects that a double-shield TBM cannot support surrounding rock in time and is low in footage in a broken stratum of a mine are overcome, and efficient tunneling and safe supporting in a complex roadway of the mine are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of full-section hard rock tunnel boring machines, in particular to an ultra-small turning main beam type mining TBM host machine. Background Art

[0002] With the development and advancement of hard rock tunnel boring machine (TBM) technology, TBMs are increasingly being used to develop tunnels in mining. Because mine roadway alignments are often based on the development of ore veins, mine roadways are more complex than mountain tunnels, highway and railway tunnels, and diversion tunnels, and typically have smaller turning radii. The ability of TBM equipment to achieve ultra-sharp turns is crucial to the promotion and application of TBMs in mining.

[0003] Due to the advantages of double-shield TBMs in small turns, double-shield TBMs are currently mostly used for tunnel development in the mining field. However, the strata in mine tunnels are relatively fragmented, and there are a large number of unfavorable geological conditions such as fault fracture zones. Under such geological conditions, the disadvantage of the long length of the double-shield TBM main machine is magnified, mainly manifested in: the roof collapses before the broken rock is exposed, resulting in the inability to provide timely support for the broken surrounding rock, a large amount of slag cleaning, and a low overall footage of the TBM equipment.

[0004] While main-beam TBMs can provide timely support for poor surrounding rock and enable rapid excavation, their long rigid structural components make them incapable of adapting to tight turns in roadways, limiting their application. Designing a main-beam TBM specifically to enable ultra-tight turns has become a key factor restricting the application and promotion of TBM technology in mining roadways.

[0005] In order to solve the above problems, an ultra-small turning main beam type mining TBM host is now proposed. Summary of the Invention

[0006] In order to solve the above problems, a super small turning main beam type mining TBM host is provided.

[0007] The specific solution of the present invention is: an ultra-small turning main beam type mining TBM main machine, including: a main beam, one end of the main beam is sequentially provided with a drive box, a shield body, and a cutter disc, the drive box is used to drive the cutter disc to rotate, the main beam is hinged to the drive box, the middle part of the main beam is provided with a sliding sleeve slidably connected to it, the sliding sleeve is provided with a support shoe, an adjustment part is provided between the support shoe and the drive box, the adjustment part is used to adjust the relative angle between the drive box and the main beam, the adjustment part is two main push cylinders symmetrically arranged on both sides of the main beam, one end of the main push cylinder is hinged to the drive box, and the other end is hinged to the sliding sleeve.

[0008] Furthermore, an anti-twist mechanism is provided between the drive box and the main beam, and the anti-twist mechanism includes: an anti-twist cylinder, two torsion cylinders are provided on the drive box, and the anti-twist cylinders are symmetrically arranged on both sides of the main beam, the piston rod of the anti-twist cylinder is arranged vertically downward, and the end of the piston rod of the anti-twist cylinder is provided with an anti-collision block, and the main beam is provided with a limit seat corresponding to the anti-collision block.

[0009] Furthermore, the outer layer of the anti-collision block is a rubber layer.

[0010] Furthermore, a rear support leg is provided at the other end of the main beam.

[0011] Furthermore, an anchor drilling machine is provided in the middle of the main beam, an arch frame installation machine is provided between the anchor drilling machine and the drive box, and the arch frame installation machine is provided on the main beam.

[0012] The working principle of this invention: During tunneling, the anti-twist cylinder remains locked. First, the grippers are tightened against the tunnel wall. The main push cylinder then extends, its piston rod pressing against the gripper sleeve. The cutterhead then rotates, preparing for rock breaking. High-pressure oil then extends the main push cylinder, advancing the shield, drive box, and cutterhead, commencing the advance process. When the equipment passes through a narrow curve, the main push cylinders on the left and right adjust their stroke differential to create a specific angle between the shield and grippers, enabling tunneling through the narrow curve. During tunneling, the two anti-twist cylinders on the drive box regulate the torsion angle generated by the cutterhead's advance. After completing a thrust stroke, the main push cylinder retracts, allowing the arch installation machine and anchor drilling rig on the main beam to proceed normally, without interfering with the main push cylinder. During tunneling, the sleeve slides back and forth on the main beam. The rear outriggers, operated by the rear outrigger cylinders, maintain low-pressure support at the tunnel bottom, providing a rear fulcrum for equipment shifting.

[0013] The present invention has the following beneficial effects: Achieve ultra-small turns: By articulating the main beam and the drive box and using the main push cylinder to adjust the relative angle between the two, the limitation of the traditional main beam TBM host's long rigid structural parts that makes it unable to adapt to small turning conditions is broken. This enables the TBM host to flexibly cope with the complex routes of small turns in mine tunnels, greatly expanding the application scenarios of main beam TBMs in the mining field. Improved construction performance in poor geological conditions: Compared to double-shield TBMs that are unable to provide timely support for surrounding rock and experience low footage in broken strata due to the excessive length of the main machine, the main-beam TBM in this invention can utilize anchor drills and arch installation machines to provide timely support for poor surrounding rock, reduce the risk of roof rock collapse, reduce the amount of slag removal, and effectively improve the overall footage efficiency of TBM equipment in broken strata in mines. Ensure operational stability: The setting of the anti-twist mechanism, especially the coordination of the anti-twist cylinder, anti-collision block and limit seat, can prevent the drive box and the main beam from excessive twisting during turning or working, ensure the stable operation of all components of the main machine, and improve the reliability and service life of the equipment. Functional integration: Multiple functional equipment such as anchor drilling rigs and arch installation machines are integrated on the main beam to achieve integrated support operations, reduce equipment installation and commissioning time, and further improve the efficiency and safety of mine tunnel excavation construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main view of the present invention; Figure 2 for Figure 1 AA cross-sectional view; Figure 3 for Figure 1 Schematic top view of Figure 4 for Figure 2 A local enlarged schematic diagram of point A; In the figure: 1. Main beam; 2. Drive box; 3. Shield; 4. Cutterhead; 5. Sliding sleeve; 6. Support shoe; 7. Main push cylinder; 8. Anti-twist cylinder; 9. Anti-collision block; 10. Limit seat; 11. Rear support leg; 12. Arch frame installation machine; 13. Anchor drilling rig. DETAILED DESCRIPTION

[0015] Please refer to Figures 1-4 , A mining TBM main machine with an ultra-small turning main beam 1, comprising: a main beam 1, one end of the main beam 1 is provided with a drive box 2, a shield 3, and a cutter head 4 in sequence, the drive box 2 is used to drive the cutter head 4 to rotate, the main beam 1 is hinged to the drive box 2, a sliding sleeve 5 is provided in the middle of the main beam 1 and is slidably connected to it, the sliding sleeve 5 is provided with a support shoe 6, an adjustment part is provided between the support shoe 6 and the drive box 2, the adjustment part is used to adjust the relative angle between the drive box 2 and the main beam 1, the adjustment part is two main push cylinders 7 symmetrically arranged on both sides of the main beam 1, one end of the main push cylinder 7 is hinged to the drive box 2, and the other end is hinged to the sliding sleeve 5.

[0016] In this embodiment, an anti-twist mechanism is also provided between the drive box 2 and the main beam 1, and the anti-twist mechanism includes: an anti-twist cylinder 8, two torsion cylinders are provided on the drive box 2, and the anti-twist cylinders 8 are symmetrically arranged on both sides of the main beam 1, and the piston rod of the anti-twist cylinder 8 is arranged vertically downward, and the end of the piston rod of the anti-twist cylinder 8 is provided with an anti-collision block 9, and the main beam 1 is provided with a limit seat 10 corresponding to the anti-collision block 9.

[0017] In this embodiment, the outer layer of the anti-collision block 9 is a rubber layer.

[0018] In this embodiment, a rear support leg 11 is provided at the other end of the main beam 1 .

[0019] In this embodiment, an anchor drill 13 is provided in the middle of the main beam 1 , an arch mounting machine 12 is provided between the anchor drill 13 and the drive box 2 , and the arch mounting machine 12 is provided on the main beam 1 .

[0020] Working Principle of the Present Invention: During tunneling, the anti-twist cylinder 8 remains locked. First, the gripper shoe 6 is tightened against the tunnel wall. Then, the main push cylinder 7 is extended, its piston rod pressing against the sleeve 5 of the gripper shoe 6. The cutterhead 4 is then rotated to begin rock breaking preparations. High-pressure oil then extends the main push cylinder 7, advancing the shield 3, drive box 2, and cutterhead 4, commencing the advance process. When the equipment passes through a narrow curve, the main push cylinders 7 on the left and right adjust the stroke difference to create a specific angle between the shield 3 and the gripper shoe 6, thereby enabling tunneling through the narrow curve. During tunneling, the two anti-twist cylinders 8 on the drive box 2 regulate the torsion angle of the cutterhead 4. After completing a thrust stroke, the main push cylinder 7 retracts, allowing the arch installation machine 12 and anchor drilling machine 13 on the main beam 1 to proceed normally with arch installation and anchor drilling without interfering with the main push cylinder 7. During tunneling, the sleeve 5 slides back and forth on the main beam 1. Under the action of the rear support leg 11 oil cylinder, the rear support leg 11 is supported at low pressure on the bottom of the tunnel, providing a rear fulcrum for the equipment to change steps.

[0021] The present invention has the following beneficial effects: Achieve ultra-small turns: By articulating the main beam 1 and the drive box 2 and using the main push cylinder 7 to adjust the relative angle between the two, the limitation of the traditional main beam 1 type TBM host machine, which has long rigid structural parts and cannot adapt to small turning conditions, is broken. This allows the TBM host machine to flexibly cope with the complex routes of small turns in mine tunnels, greatly expanding the application scenarios of the main beam 1 type TBM in the mining field.

[0022] Improved construction performance in poor geological conditions: Compared to double-shield TBMs in broken strata, which suffer from the problem of inability to timely support surrounding rock and low footage due to the excessive length of the main machine, the main beam 1 TBM in the present invention can utilize the anchor drill rig 13 and the arch installation machine 12 to provide timely support for poor surrounding rock, reduce the risk of roof rock collapse, reduce the amount of slag removal, and effectively improve the overall footage efficiency of TBM equipment in broken strata in mines.

[0023] Ensure operational stability: The setting of the anti-twist mechanism, especially the cooperation of the anti-twist cylinder 8, the anti-collision block 9 and the limit seat 10, can prevent the drive box 2 and the main beam 1 from excessive twisting during turning or working, ensure the stable operation of all components of the main machine, and improve the reliability and service life of the equipment.

[0024] Functional integration: Multiple functional equipment such as the anchor drill rig 13 and the arch installation machine 12 are integrated on the main beam 1 to realize the integration of support operations, reduce equipment installation and commissioning time, and further improve the efficiency and safety of mine tunnel excavation construction.

Claims

1. A TBM mainframe with an ultra-small turning main beam for mining, comprising: A main beam, one end of which is provided with a drive box, a shield body and a cutter disc in sequence, the drive box is used to drive the cutter disc to rotate, and is characterized in that: the main beam is hinged to the drive box, a sliding sleeve is provided in the middle of the main beam and is slidably connected to it, a support shoe is provided on the sliding sleeve, an adjustment part is provided between the support shoe and the drive box, the adjustment part is used to adjust the relative angle between the drive box and the main beam, the adjustment part is two main push cylinders symmetrically arranged on both sides of the main beam, one end of the main push cylinder is hinged to the drive box, and the other end is hinged to the sliding sleeve.

2. The ultra-small turning main beam type mining TBM main machine according to claim 1 is characterized by: An anti-twist mechanism is also provided between the drive box and the main beam, and the anti-twist mechanism includes: an anti-twist cylinder, two torsion cylinders are provided on the drive box, and the anti-twist cylinders are symmetrically arranged on both sides of the main beam, the piston rod of the anti-twist cylinder is arranged vertically downward, and the end of the piston rod of the anti-twist cylinder is provided with an anti-collision block, and a limit seat corresponding to the anti-collision block is provided on the main beam.

3. The ultra-small turning main beam type mining TBM main machine according to claim 2 is characterized by: The outer layer of the anti-collision block is a rubber layer.

4. The ultra-small turning main beam type mining TBM main machine according to claim 1 is characterized by: The other end of the main beam is provided with a rear support leg.

5. The ultra-small turning main beam type mining TBM main machine according to claim 1 is characterized by: An anchor drilling machine is provided in the middle of the main beam, an arch frame installation machine is provided between the anchor drilling machine and the driving box, and the arch frame installation machine is provided on the main beam.

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