Open-type TBM vertical arch support slag removal mechanism and system

Abstract

The invention provides an open-type TBM vertical arch support slag removal mechanism and system, and relates to the technical field of tunnel construction.The open-type TBM vertical arch support slag removal mechanism comprises a belt frame and a lifting mechanism, the belt frame is provided with a belt, an upper carrier roller and a roller motor, and the roller motor is located at the end of the belt frame and used for providing conveying power for the belt; the upper carrier roller is used for supporting the belt; a front hinging part and a rear hinging part are respectively arranged at the front end and the rear end of the belt frame; the rear hinge part is used for being hinged to the rear end of a main beam of the arch frame erector. The lifting mechanism is used for being installed on a main beam of the lagging jack erector, and the output end of the lifting mechanism is connected with the front hinge part. The slag removal speed can be obviously increased, the construction efficiency is improved, and the labor intensity of workers and the manual operation risk are obviously reduced.

Description

Technical Field

[0001] This invention relates to the field of open-type TBM tunnel construction technology, and in particular to an open-type TBM vertical arch support and slag removal mechanism and system. Background Technology

[0002] During tunnel construction, TBMs (tunnel boring machines) serve as highly efficient tunnel boring equipment, significantly improving construction efficiency and safety. In TBM construction for metal and non-metal mining tunnels, the overall process is step change – arch erection – tunneling. Arch erection requires clearing debris from the surrounding rock after step change (for example, a large amount of slag and gravel is generated during construction in phyllite strata) to ensure the arch frame adheres to the rock wall. Slag removal is a critical step affecting arch erection efficiency. Although the equipment has conveyor belts to transport slag out of the tunnel, their high position necessitates manual labor using shovels and other tools to transfer the slag above the conveyor belt. This results in limited working space, long processing times, slow construction progress, disrupted workflow, and high labor costs.

[0003] The present invention aims to solve the above-mentioned technical problems. Summary of the Invention

[0004] This invention provides an open-type TBM vertical arch support slag removal mechanism and system to solve the technical problems in the prior art, significantly improve the slag removal speed, enhance construction efficiency, and significantly reduce the labor intensity and manual operation risks of workers.

[0005] This invention provides an open-type TBM vertical arch support and slag removal mechanism, including a belt frame and a lifting mechanism. The belt frame is equipped with a belt, an upper idler roller, and a drum motor. The drum motor is located at the end of the belt frame and is used to provide conveying power to the belt. The upper idler roller is used to support the belt. The rear end of the belt is located above the front end of the rear belt conveyor mechanism. The front end and rear end of the belt frame are respectively provided with a front hinge and a rear hinge. The rear hinge is used to hinge with the rear end of the main beam of the arch frame assembly machine. The lifting mechanism is used to be installed on the main beam of the arch frame assembly machine, and the output end of the lifting mechanism is connected to the front hinge.

[0006] In one embodiment, the lifting mechanism is an electric hoist, and two electric hoists are provided. Two front hinges and two rear hinges are provided respectively. The front hinges and the rear hinges are located on both sides of the belt frame, and the output end of the electric hoist is hinged to the front hinge.

[0007] As one embodiment, a driven roller is rotatably mounted on the belt frame, the driven roller being located at the front end of the belt frame, and the roller motor being mounted at the rear end of the belt frame.

[0008] As one embodiment, the upper idler roller is a trough-shaped idler roller.

[0009] As one embodiment, it also includes a lower support roller, which is located below the upper support roller, and the lower support roller is a straight support roller.

[0010] As one embodiment, the belt frame is also provided with a deflector wheel, which is distributed on both sides of the upper idler roller to prevent the belt from running off-center.

[0011] As one embodiment, a bracket is also provided at the front end of the bottom of the belt frame, the bracket being used to support the tunnel floor when the front end of the belt frame is lowered.

[0012] In one embodiment, the support includes a vertical rod and a diagonal rod. The top ends of the vertical rod and the diagonal rod are fixedly connected to the belt frame, and the bottom ends of the vertical rod and the diagonal rod are connected to each other.

[0013] The present invention also provides an open-type TBM vertical arch support and slag removal system, including a TBM main unit, an arch frame assembly machine, an open-type TBM vertical arch support and slag removal mechanism as described above, and a rear belt conveyor mechanism. The arch frame assembly machine is located behind the TBM main unit and has a main beam. The front end and rear end of the main beam are respectively fixed with a front fixed lug and a rear fixed lug. In the open-type TBM vertical arch support and slag removal mechanism, the top end of the lifting mechanism is hinged to the front fixed lug, and the rear hinge of the belt frame in the open-type TBM vertical arch support and slag removal mechanism is hinged to the rear fixed lug. The front end of the rear belt conveyor mechanism is located below the rear end of the belt frame and is used to receive the gravel falling from the rear end of the belt frame and transport the gravel out of the tunnel.

[0014] In one embodiment, the top end of the lifting mechanism is hinged to the front fixed ear, and the rear hinge portion is hinged to the rear fixed ear by a pin.

[0015] Beneficial effects: This invention, by setting up a slag removal mechanism that can be installed on the main beam of the arch frame assembly machine, can significantly improve the slag removal speed, ensure the continuity of construction procedures, thereby shortening the construction cycle and improving construction efficiency. At the same time, it also significantly reduces the labor intensity of workers, facilitates construction in the narrow space of the tunnel, and reduces the risks of manual operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an open-type TBM vertical arch support and slag removal mechanism in one embodiment of the present invention. Figure 2 for Figure 1 Top view; Figure 3 This is a schematic diagram of the slag removal status of an open TBM vertical arch support slag removal system in one embodiment of the present invention.

[0018] Figure label: 1. Belt conveyor; 2. Electric hoist; 3. Upper idler roller; 4. Drum motor; 5. Lower idler roller; 6. Driven drum; 7. Front hinge; 8. Rear hinge; 9. Deviation wheel; 10. Vertical rod; 11. Diagonal rod; 12. TBM main unit; 13. Arch frame assembly machine; 14. Rear belt conveyor mechanism; 15. Front fixed lug; 16. Rear fixed lug; 17. Main beam. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The purpose of this invention is to provide an open-type TBM vertical arch support slag removal mechanism and system to solve the problems existing in the prior art. It can significantly improve the slag removal speed, enhance construction efficiency, and significantly reduce the labor intensity and manual operation risks of workers.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1: like Figures 1-3 As shown, this embodiment provides an open-type TBM vertical arch support and slag removal mechanism, including a belt frame 1 and a lifting mechanism. The belt frame 1 is equipped with a belt, an upper idler roller 3, and a drum motor 4. The drum motor 4 is located at the end of the belt frame 1 and is used to provide conveying power to the belt. The upper idler roller 3 is used to support the belt. The front end and rear end of the belt frame 1 are respectively provided with a front hinge 7 and a rear hinge 8. The rear hinge 8 is used to hinge with the rear end of the main beam 17 of the arch frame assembly machine 13. The lifting mechanism is used to be installed on the main beam 17 of the arch frame assembly machine 13, and the output end of the lifting mechanism is connected to the front hinge 7. The hinge rotation axes of the front hinge 7 and the rear hinge 8 are both horizontally arranged.

[0023] When it is necessary to clear the gravel, the lifting mechanism lowers the front end of the belt conveyor 1 to a height close to the ground or at an appropriate level, with the rear end of the belt on the belt conveyor 1 positioned above the rear belt conveyor mechanism 14. The roller motor 4 is started to drive the belt, and workers can use shovels or other tools to transfer the gravel and debris from the tunnel floor to the front end of the belt on the belt conveyor 1. The belt then transports the gravel and debris to the rear belt conveyor mechanism 14, which then transports them out of the tunnel. Because the front end of the belt conveyor 1 is lowered in this embodiment, the lifting height required for workers to move the gravel and debris is smaller, reducing labor intensity and improving work efficiency. Furthermore, the distance the workers need to move the gravel and debris is shorter, requiring less operating space, which is beneficial for operations in the confined space of a tunnel. After clearing the gravel and debris, the lifting mechanism raises the front end of the belt conveyor 1, allowing it to move synchronously with the TBM main unit 12 and the arch frame assembly machine 13 without affecting the normal operation of other equipment.

[0024] Therefore, by setting up a slag removal mechanism that can be installed on the main beam 17 of the arch frame assembly machine 13, this embodiment can significantly improve the slag removal speed, ensure the continuity of the construction process, thereby shortening the construction cycle and improving construction efficiency. At the same time, it also significantly reduces the labor intensity of workers, facilitates construction in the narrow space of the tunnel, and reduces the risk of manual operation.

[0025] In this embodiment, the lifting mechanism is an electric hoist 2, with a rated load of not less than 2 tons. Two electric hoists 2 are provided. Two front hinge parts 7 and two rear hinge parts 8 are respectively provided on the belt frame 1, located on opposite sides of the belt frame 1. The ends of the lifting chains in the electric hoists 2 are hinged to the front hinge parts 7. During operation, both electric hoists 2 lift and lower simultaneously. Furthermore, the electric hoists 2 can be frequency-controlled, and their lifting speed is adjustable from 0.1 m / s to 0.3 m / s. The electric hoists 2 are easier to maintain and have lower replacement costs.

[0026] In this embodiment, a driven roller 6 is rotatably mounted on the belt conveyor 1. The driven roller 6 is located at the front end of the belt conveyor 1, and the roller motor 4 is installed at the rear end of the belt conveyor 1. In this embodiment, the roller motor 4 is an explosion-proof roller with a rated power of 4kW.

[0027] In this embodiment, the upper idler 3 is a trough idler. Along the conveying direction of the belt, the interval between the trough idlers can be 45cm. The inclination angle of the inclined roller in the trough idler is 35°. The trough idler is required to have a dynamic load of not less than 500kg to ensure that it has sufficient load-bearing capacity.

[0028] This embodiment also includes a lower idler roller 5, which is located below the upper idler roller 3. The lower idler roller 5 is a straight idler roller, and the spacing of the lower idler rollers 5 is 1m along the conveying direction of the belt.

[0029] In this embodiment, the belt frame 1 is also equipped with a deflector wheel 9, which is distributed on both sides of the upper idler roller 3 to prevent the belt from running off-center. The deflector wheel 9 is a commonly used mechanism on belt conveyors, and its structure and usage will not be described in detail in this embodiment.

[0030] In this embodiment, a support is also provided at the front end of the bottom of the belt frame 1. The support is used to support the tunnel floor when the front end of the belt frame 1 is lowered, so as to avoid the belt at the front end of the belt frame 1 from touching the ground, affecting the normal conveying of the belt or causing excessive wear of the belt. At the same time, it reduces the pulling force required by the electric hoist 2 during the transportation of slag, thereby reducing the load on the electric hoist 2 and extending its service life.

[0031] In this embodiment, the support includes a vertical rod 10 and a diagonal rod 11. The top ends of both the vertical rod 10 and the diagonal rod 11 are fixedly connected to the belt frame 1, and the bottom ends of the vertical rod 10 and the diagonal rod 11 are connected together. The vertical rod 10, the diagonal rod 11, and the belt frame 1 form a triangular structure to provide stable support. The top end of the diagonal rod 11 can be hinged to the bottom of the belt frame 1, and the bottom end of the diagonal rod 11 can be provided with a slotted hole, allowing for easy detachable connection to the bottom end of the vertical rod 10 via bolts passing through the slotted hole.

[0032] Example 2: like Figures 1-3 As shown, this embodiment provides an open-type TBM vertical arch support slag removal system, including a TBM main unit 12, an arch frame assembly machine 13, the open-type TBM vertical arch support slag removal mechanism in Embodiment 1, and a rear belt conveyor mechanism 14. The arch frame assembly machine 13 is located behind the TBM main unit 12. The arch frame assembly machine 13 has a main beam 17, and the front end and rear end of the main beam 17 are respectively fixed with a front fixing lug 15 and a rear fixing lug 16. In the open-type TBM vertical arch support slag removal mechanism, the top end of the lifting mechanism is hinged to the front fixing lug 15, and the rear hinge part 8 of the belt frame 1 in the open-type TBM vertical arch support slag removal mechanism is hinged to the rear fixing lug 16. The rear belt conveyor mechanism 14 is located behind the slag removal mechanism, and the front end of the rear belt conveyor mechanism 14 is located below the rear end of the belt frame 1 in the slag removal mechanism. It is used to receive the gravel falling from the rear end of the belt frame 1 and transport the gravel out of the tunnel. The TBM main unit 12, the arch frame assembly machine 13, and the rear belt conveyor mechanism 14 are all conventional structures in the art, and will not be described in detail in this embodiment.

[0033] In this embodiment, the hinge part and the rear hinge part 8 can also be an ear plate structure.

[0034] In this embodiment, the top of the lifting mechanism is hinged to the front fixed lug 15, and the rear hinge 8 is hinged to the rear fixed lug 16 by pins. The pin surface is subjected to high-frequency quenching treatment, and the hardness reaches HRC45~50.

[0035] In this embodiment, the front fixing lug 15 can be a standardized lifting lug, made of Q345B low alloy steel, and the weld strength between the front fixing lug 15 and the main beam 17 is not less than 85% of the base material; the rear fixing lug 16 can be a U-shaped closed lifting lug, with the inner diameter tolerance controlled at H8 grade, forming a transition fit with the pin (Φ40±0.02mm).

[0036] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0037] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An open-type TBM vertical arch support and slag removal mechanism, characterized in that, include: The belt conveyor includes a belt, an upper idler roller, and a roller motor. The roller motor is located at the end of the belt conveyor and provides conveying power to the belt. The upper idler roller supports the belt, and the rear end of the belt is located above the front end of the rear belt conveyor mechanism. The front and rear ends of the belt conveyor are also provided with a front hinge and a rear hinge, respectively. The rear hinge is used to hinge with the rear end of the main beam of the arch frame assembly machine. And a lifting mechanism, which is used to be installed on the main beam of the arch frame assembly machine, and the output end of the lifting mechanism is connected to the front hinge.

2. The open-type TBM vertical arch support and slag removal mechanism according to claim 1, characterized in that, The lifting mechanism is an electric hoist, and two electric hoists are provided. There are two front hinges and two rear hinges. The front hinges and the rear hinges are located on both sides of the belt frame. The output end of the electric hoist is hinged to the front hinge.

3. The open-type TBM vertical arch support and slag removal mechanism according to claim 1 or 2, characterized in that, A driven roller is also rotatably mounted on the belt frame. The driven roller is located at the front end of the belt frame, and the roller motor is installed at the rear end of the belt frame.

4. The open-type TBM vertical arch support and slag removal mechanism according to claim 3, characterized in that, The upper idler roller is a trough-shaped idler roller.

5. The open-type TBM vertical arch support and slag removal mechanism according to claim 4, characterized in that, It also includes a lower support roller, which is located below the upper support roller, and the lower support roller is a straight support roller.

6. The open-type TBM vertical arch support and slag removal mechanism according to claim 5, characterized in that, The belt frame is also equipped with deflector wheels, which are distributed on both sides of the upper idler roller to prevent the belt from running off-center.

7. The open-type TBM vertical arch support and slag removal mechanism according to claim 1, characterized in that, A bracket is also provided at the front end of the bottom of the belt frame, which is used to support the tunnel floor when the front end of the belt frame is lowered.

8. The open-type TBM vertical arch support and slag removal mechanism according to claim 7, characterized in that, The support includes a vertical rod and a diagonal rod. The top ends of the vertical rod and the diagonal rod are fixedly connected to the belt frame, and the bottom ends of the vertical rod and the diagonal rod are connected to each other.

9. An open-type TBM vertical arch support and slag removal system, characterized in that, include: TBM main unit; An arch frame assembly machine is located behind the TBM main unit. The arch frame assembly machine has a main beam, and the front end and rear end of the main beam are respectively fixed with front fixing ears and rear fixing ears. The open-type TBM vertical arch support cleaning mechanism as described in any one of claims 1 to 9, wherein the top end of the lifting mechanism in the open-type TBM vertical arch support cleaning mechanism is hinged to the front fixed ear, and the rear hinge part of the belt frame in the open-type TBM vertical arch support cleaning mechanism is hinged to the rear fixed ear. And a rear belt conveyor mechanism, the front end of which is located below the rear end of the belt frame, for receiving gravel falling from the rear end of the belt frame and transporting the gravel out of the tunnel.

10. The open-type TBM vertical arch support and slag removal system according to claim 9, characterized in that, The top of the lifting mechanism is hinged to the front fixed lug, and the rear hinge is hinged to the rear fixed lug by a pin.

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