Open-type TBM stepping device and rapid assembly stepping method thereof

Abstract

The invention discloses an open-type TBM stepping device and a rapid assembly stepping method thereof, the stepping device comprises a stepping track and a pushing device, and the stepping track is used for supporting stepping movement of a TBM host; the stepping track comprises a plurality of stepping bases, and the stepping bases are sequentially connected end to end to form the stepping track of an integrated structure. The pushing device is fixedly arranged on the top of the stepping base and used for controlling the TBM host to run on the stepping base. In the assembling process, working condition switching from assembling to tunneling is completed through replacement of the rails and the wheels. According to the design, TBM equipment installation and civil engineering cavern construction operation can be synchronously carried out, the application range is effectively expanded, the front shield and the cutter head can be continuously kept in a head-up state in the whole stepping process, and the safety of TBM stepping operation is effectively improved.

Description

Technical Field

[0001] This invention relates to a TBM stepper device, and more particularly to an open-type TBM stepper device and a rapid assembly stepper method thereof. Background Technology

[0002] Tunnel construction typically employs drill-and-blast and TBM methods for excavation. While drill-and-blast methods offer advantages such as high flexibility and low cost, they also present disadvantages including difficulty in controlling construction quality, low levels of mechanization, high labor input, high safety risks, long construction periods, poor working conditions, and challenges in explosives control. These disadvantages can easily cause occupational health injuries to on-site construction and management personnel and can readily lead to safety accidents.

[0003] TBM construction boasts advantages such as high automation, safety, environmental friendliness, and low labor intensity. However, tunnel construction in many projects is located in mountainous areas with limited on-site working space. This leads to situations where the plaza outside the tunnel cannot accommodate the linear assembly of equipment, and the civil engineering work in the launching tunnel is incomplete. Therefore, adjusting the equipment installation position, assembly, and stepping scheme is crucial to ensure the rapid assembly and launch of the TBM within limited space, thereby addressing issues such as small working areas and overlap between civil engineering construction and equipment installation.

[0004] The information disclosed in this background section is intended only to enhance understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies, such as limited on-site working space in mountainous areas, which makes it impossible to meet the requirements for linear equipment assembly, and the overlapping of civil construction and equipment installation periods. This invention provides an open-type TBM stepping device and its rapid assembly stepping method that can adjust the starting chamber and assembly position of the TBM to achieve linear equipment assembly, while simultaneously carrying out civil foundation and equipment installation work.

[0006] To achieve the above objectives, the technical solution of the present invention is:

[0007] An open-type TBM stepping device, the stepping device comprising: a stepping track and a pushing device;

[0008] The stepper track is used to support the stepping movement of the TBM host; the stepper track includes multiple stepper bases, and the multiple stepper bases are connected end to end to form a stepper track with an integral structure.

[0009] The pushing device is located on the top of the stepper base, and the power output end of the pushing device is fixedly connected to the TBM host. The pushing device is used to propel the TBM host to move on the stepper base.

[0010] The stepping base includes a base frame and two parallel inclined support rails. The bottoms of the two inclined support rails are connected to form an integral structure through the base frame, and the tops of the two inclined support rails facing each other are provided with supporting inclined surfaces.

[0011] The pushing device is located on top of the inclined support rail.

[0012] The TBM main unit is equipped with a rear support system at its rear end. The rear support system moves synchronously with the TBM main unit on the stepping base. The rear support system includes multiple trolleys, G1 to Gn, arranged in sequence.

[0013] The top of the base frame is covered with a rear support track for the rear support system to travel on, and the rear support system travels into the stepping track via the rear support track.

[0014] The bottom of the TBM main unit and its supporting system are equipped with inclined wheels, and the supporting system and the TBM main unit move synchronously on the stepping base through the inclined wheels.

[0015] The inclined wheel includes a wheel body seat, a wheel body, and a steering drive device. The wheel body seat is located at the bottom of the TBM main unit and its supporting systems.

[0016] The wheel body is rotatably connected to the wheel body seat;

[0017] One end of the steering drive device is connected to the wheel seat, and the other end of the steering drive device is connected to the wheel drive. The steering drive device is used to drive the wheel to steer.

[0018] The trolley of the rear support system has detachable starting wheels installed at its bottom, and the trolley travels on the rear support track via the starting wheels.

[0019] The stepping device also includes a drag cylinder, which is disposed on the top of the stepping base;

[0020] The towing cylinder is used to provide the power for the TBM main unit to retract.

[0021] A rapid assembly stepping method for an open-type TBM stepper device, the rapid assembly stepping method comprising:

[0022] S1, mark the TBM track installation position on the plaza outside the tunnel, and pre-embed ground embedded parts for installing stepping bases at the TBM track installation position. At the same time, divide the working space of the civil construction party on the plaza outside the tunnel, install two stepping bases on the ground embedded parts outside the working space of the civil construction party, and connect the two stepping bases to form a stepping track with an integrated structure.

[0023] S2, assemble the TBM main unit onto the stepper base. After the TBM main unit is assembled, lay the rear support rail behind the TBM main unit, assemble the rear support system onto the rear support rail, and connect the pipes and wires between the TBM main unit and the rear support system. After the rear support system is assembled, debug the TBM main unit and the rear support system.

[0024] S3. After the equipment is debugged, install the stepping base on the ground embedded parts in the working space of the civil construction party and extend it to the stepping hole. Connect all the stepping bases end to end to form a stepping track with an integrated structure.

[0025] S4, operate the TBM host to perform the cutter head raising operation. After the cutter head raising operation is completed, disconnect the pipes and wires between the TBM host and the downstream supporting system, and connect the TBM host and the downstream supporting system with steel wire rope.

[0026] S5, the pushing device is fixedly installed on the stepping base at the rear of the TBM main unit. The power output end of the pushing device is connected to the tail transmission of the TBM main unit. After the pushing device is installed, the pushing device is operated to push the TBM main unit to travel on the stepping track. At this time, the TBM main unit pulls the supporting system to travel synchronously through the steel wire rope. When the supporting system travels, the supporting track is laid in the travel interval.

[0027] S6. When the G1 car and connecting bridge are fully inside the stepping base, remove the trolley connecting shaft, use jacks to lift the G1 car and connecting bridge, then remove the starting wheels and the rear matching rails, and install the inclined wheels.

[0028] S7. After the TBM main unit has fully entered the starting hole, remove the pushing device and wire rope, use a hand chain hoist to adjust the rear supporting trolley to a suitable position, then install the drag cylinder, connect the pipelines and wires of the TBM main unit and the rear supporting system, and after the connection is completed, lay the rear supporting track on the stepping base, and the stepping is completed.

[0029] In S2, the first three trolleys are equipped with starting wheels, and the remaining trolleys are equipped with inclined wheels.

[0030] In S4, the steps of the cutter head raising operation are as follows: using the TBM host's main push cylinder partition control function, the two cylinders in the lower zone are extended to a set stroke, and then the cylinders in the upper zone are retracted to a set stroke. Through this operation, the front shield and cutter head are raised at a certain angle. Then, the front shield and the support shield are fixed together by the connecting beam to maintain the raised state during the stepping process.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] 1. In the open-type TBM stepping device of the present invention, the stepping track includes multiple stepping bases connected end to end. Different stepping bases can be assembled into a suitable stepping track according to the construction site environment. At the same time, the stepping base includes both the stepping track and the rear matching track. The stepping track and the rear matching track are respectively adapted to the inclined wheel and the starting wheel, so that the TBM host can cooperate with the standard circular cross section presented by the TBM construction, thereby realizing the parallelization of construction and efficient use of space.

[0033] 2. In the rapid assembly and stepping method of the open-type TBM stepping device of this invention, by dividing the working space of the civil construction party in the plaza outside the tunnel, and simultaneously installing the stepping track outside the divided working space, the installation of the TBM equipment and the construction work in the civil tunnel can be carried out simultaneously. This design can be applied to projects with tight schedules, ensuring the initial excavation progress. Therefore, this design allows the installation of the TBM equipment and the construction work in the civil tunnel to be carried out simultaneously, effectively expanding its applicable scope.

[0034] 3. In the rapid assembly and stepping method of the open-type TBM stepping device of the present invention, after the equipment debugging is completed, the TBM host is operated to raise the cutter head, so that the front shield and the cutter head remain in an raised state throughout the stepping process, avoiding problems such as head tilting, cutter head jamming, and scraping against the stepping base during the stepping process. Therefore, this design can keep the front shield and the cutter head in an raised state throughout the stepping process, effectively improving the safety of TBM stepping operations. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the present invention.

[0036] Figure 2 This is a top view of the present invention.

[0037] Figure 3 This is a side view of the present invention.

[0038] Figure 4 yes Figure 1 A schematic diagram of the structure of the stepper base.

[0039] Figure 5 yes Figure 3 A schematic diagram of the structure of the middle slant wheel.

[0040] Figure 6 yes Figure 3 A schematic diagram of the structure of the middle pushing device.

[0041] Figure 7 This is a location diagram of the working space for the civil engineering construction party in this invention.

[0042] Figure 8This is a schematic diagram of step S2 in the method described in this invention.

[0043] Figure 9 This is a schematic diagram of step S3 in the method described in this invention.

[0044] Figure 10 This is a schematic diagram of step S6 in the method described in this invention.

[0045] Figure 11 yes Figure 3 Diagram showing the location relationship between the TBM host and the tunnel.

[0046] Figure 12 yes Figure 3 A schematic diagram of the tunnel structure.

[0047] In the diagram: 1. Stepping base, 11. Connecting device, 12. Base frame, 13. Inclined support rail, 14. Pushing device, 2. Traction cylinder, 3. TBM main unit, 4. Rear support system, 5. Inclined wheel, 6. Wheel seat, 61. Wheel, 62. Steering drive device, 63. Starting wheel, 7. Civil construction work space, 8. Tunnel, 9. Tunnel entrance, 91. Starting tunnel, 92. Stepping tunnel, 93. Excavated tunnel, 94. Rear support rail, 10. Detailed Implementation

[0048] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] Example 1:

[0050] See Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 12 An open-type TBM stepping device, the stepping device comprising: a stepping track 1 and a pushing device 2;

[0051] The stepper track 1 is used to support the stepping movement of the TBM host 4; the stepper track 1 includes multiple stepper bases 11, and the multiple stepper bases 11 are connected end to end to form an integral stepper track 1.

[0052] The pushing device 2 is located on the top of the stepper base 11. The power output end of the pushing device 2 is fixedly connected to the TBM host 4. The pushing device 2 is used to propel the TBM host 4 to move on the stepper base 11.

[0053] See Figure 4 The stepping base 11 includes multiple base frames 12 and two parallel inclined support rails 13. The two inclined support rails 13 are connected to each other by multiple base frames 12 to form an integral structure. The top of the two inclined support rails 13 facing each other is provided with a supporting inclined surface 14.

[0054] The pushing device 2 is located on the top of the inclined support rail 13.

[0055] The TBM host 4 is equipped with a rear support system 5 at its rear end. The rear support system 5 moves synchronously with the TBM host 4 on the stepping base 11. The rear support system 5 includes multiple trolleys G1 to Gn arranged in sequence.

[0056] The top of the bottom frame 12 is provided with a rear support track 10 for the rear support system 5 to travel on, and the rear support system 5 travels into the stepping track 1 via the rear support track 10.

[0057] The bottom of the TBM main unit 4 and the rear supporting system 5 are equipped with inclined wheels 6, and the rear supporting system 5 and the TBM main unit 4 move synchronously on the stepping base 11 through the inclined wheels 6.

[0058] See Figure 5 The inclined wheel 6 includes a wheel body seat 61, a wheel body 62, and a steering drive device 63. The wheel body seat 61 is located at the bottom of the TBM main unit 4 and the rear supporting system 5.

[0059] The wheel body 62 is rotatably connected to the wheel body seat 1;

[0060] One end of the steering drive device 63 is connected to the wheel seat 61, and the other end of the steering drive device 63 is connected to the wheel 62 in a transmission connection. The steering drive device 63 is used to drive the wheel 62 to steer.

[0061] The trolley of the rear supporting system 5 is detachably equipped with starting wheels 7, and the trolley travels on the rear supporting track 10 via the starting wheels 7.

[0062] The stepping device also includes a drag cylinder 3, which is disposed on the top of the stepping base 11;

[0063] The tractor cylinder 3 is used to provide the power for the TBM main unit 4 to retract.

[0064] Example 2:

[0065] A rapid assembly stepping method for an open-type TBM stepper device, the rapid assembly stepping method comprising:

[0066] See Figure 7 S1, mark the TBM track installation position on the plaza outside Tunnel 9, and pre-embed ground embedded parts for installing stepping base 11 at the TBM track installation position. At the same time, divide the civil construction party's working space 8 on the plaza outside the tunnel, install two stepping base 11 sections on the ground embedded parts outside the civil construction party's working space 8, and connect the two stepping base 11 sections to form a stepping track 1 with an integrated structure.

[0067] See Figure 8 S2, assemble the TBM host 4 onto the stepper base 11, and then assemble the TBM host 4 onto the stepper base. After the TBM host 4 is assembled, lay the rear supporting track 10 behind the TBM host 4, and assemble the rear supporting system 5 onto the rear supporting track 10. Connect the pipes and wires between the TBM host 4 and the rear supporting system 5. After the rear supporting system 5 is assembled, debug the TBM host 4 and the rear supporting system 5.

[0068] See Figure 9 S3, After the equipment is debugged, install the stepping base 11 on the ground embedded parts in the working space 8 of the civil construction party and extend it to the stepping hole 93. Connect all the stepping bases 11 end to end to form the stepping track 1 of the integrated structure.

[0069] S4, operate the TBM host 4 to perform the cutter head raising operation. After the cutter head raising operation is completed, remove the pipes and wires between the TBM host 4 and the downstream supporting system 5, and connect the TBM host 4 and the downstream supporting system 5 with a steel wire rope.

[0070] S5, the pushing device 2 is fixedly installed on the stepping base 11 at the tail of the TBM main unit 4. The power output end of the pushing device 2 is connected to the tail of the TBM main unit 4. After the pushing device 2 is installed, the pushing device 2 is operated to push the TBM main unit 4 to travel on the stepping track 1. At this time, the TBM main unit 4 pulls the rear supporting system 5 to travel synchronously through the steel wire rope. When the rear supporting system 5 travels, the rear supporting track 10 is laid in the travel interval.

[0071] See Figure 10 S6, when G1 car and connecting bridge are fully inside the stepping base, remove the trolley connecting shaft, use jacks to lift G1 car and connecting bridge, then remove the starting wheel 7 and the rear matching rail 10, and install the inclined wheel 6.

[0072] See Figure 11 S7. After the TBM main unit 4 has fully entered the starting hole 92, remove the pushing device 2 and the wire rope, use a hand hoist to adjust the rear supporting trolley to a suitable position, then install the drag cylinder, connect the pipelines and wires of the TBM main unit 4 and the rear supporting system 5, after the connection is completed, lay the rear supporting track 10 on the stepping base 11, and the stepping is completed.

[0073] In S1, one end of the civil engineering construction work space 8 is in contact with the tunnel entrance 91, and the distance between the other end of the civil engineering construction work space 8 and the tunnel entrance 91 is 6 meters.

[0074] Example 3:

[0075] Example 3 is basically the same as Example 2, except that:

[0076] See Figures 1 to 3 In S2, the first three sections of the trolley are equipped with starting wheels 7, and the remaining trolleys are equipped with inclined wheels 6.

[0077] In S4, the steps of the cutter head raising operation are as follows: using the main thrust cylinder partition control function of the TBM host 4, the two cylinders in the lower zone are extended to a set stroke, and then the cylinders in the upper zone are retracted to a set stroke. Through this operation, the front shield and the cutter head are raised at a certain angle. Then, the front shield and the support shield are fixed together by the connecting beam to maintain the raised state during the stepping process.

[0078] In S4, the length of the steel wire rope is 3 meters.

[0079] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. An open-type TBM stepping device, characterized in that, The stepping device includes: a stepping track (1) and a pushing device (2); The stepping track (1) is used to support the stepping movement of the TBM host (4); the stepping track (1) includes multiple stepping bases (11), and the multiple stepping bases (11) are connected end to end to form a stepping track (1) with an integral structure. The pushing device (2) is located on the top of the stepping base (11). The power output end of the pushing device (2) is fixedly connected to the TBM host (4). The pushing device (2) is used to push the TBM host (4) to move on the stepping base (11).

2. The open-type TBM stepping device according to claim 1, characterized in that, The stepping base (11) includes a base frame (12) and two parallel inclined support rails (13). The bottom of the two inclined support rails (13) are connected to each other through the base frame (12) to form an integral structure. The top of the two inclined support rails (13) facing each other is provided with a support slope (14). The pushing device (2) is located on top of the inclined support rail (13).

3. The open-type TBM stepping device according to claim 2, characterized in that, The TBM main unit (4) is equipped with a rear support system (5) at the rear, and the rear support system (5) includes multiple trolleys G1 to Gn arranged in sequence. The top of the bottom frame (12) is provided with a rear support track (10) for the rear support system (5) to travel on, and the rear support system (5) travels into the stepping track (1) through the rear support track (10).

4. An open-type TBM stepping device according to claim 2, characterized in that, The bottom of the TBM main unit (4) and the rear supporting system (5) are equipped with inclined wheels (6), and the rear supporting system (5) and the TBM main unit (4) move synchronously on the stepping base (11) through the inclined wheels (6).

5. An open-type TBM stepping device according to claim 4, characterized in that, The inclined wheel (6) includes a wheel seat (61), a wheel body (62) and a steering drive device (63). The wheel seat (61) is located at the bottom of the TBM main unit (4) and the rear supporting system (5). The wheel body (62) is rotatably connected to the wheel body seat (1); One end of the steering drive device (63) is connected to the wheel seat (61), and the other end of the steering drive device (3) is connected to the wheel (62) for transmission. The steering drive device (63) is used to drive the wheel (62) to turn.

6. An open-type TBM stepping device according to claim 2, characterized in that, The bottom of the trolley of the rear supporting system (5) is detachably equipped with starting wheels (7), and the trolley travels on the rear supporting track (10) via the starting wheels (7).

7. An open-type TBM stepping device according to claim 1, characterized in that, The stepping device also includes a drag cylinder (3), which is disposed on the top of the stepping base (11); The traction cylinder (3) is used to provide the TBM main unit (4) with the power to retract.

8. A rapid assembly stepping method for an open-type TBM stepping device according to any one of claims 1 to 7, characterized in that: The rapid assembly step method includes: S1, mark the TBM track installation position on the plaza outside the tunnel (9), and pre-embed ground embedded parts for installing stepping base (11) at the TBM track installation position. At the same time, divide the civil engineering construction party's working space (8) on the plaza outside the tunnel, install two stepping bases (11) on the ground embedded parts outside the civil engineering construction party's working space (8), and connect the two stepping bases (11) to form a stepping track (1) with an integrated structure. S2, assemble the TBM host (4) onto the stepper base (11). After the TBM host (4) is assembled, lay the rear support track (10) behind the TBM host (4) and assemble the rear support system (5) onto the rear support track (10). Connect the pipes and wires between the TBM host (4) and the rear support system (5). After the rear support system (5) is assembled, debug the TBM host (4) and the rear support system (5). S3. After the equipment is debugged, install the stepping base (11) on the ground embedded part in the working space (8) of the civil construction party and extend it to the stepping hole (93). Connect all the stepping bases (11) end to end to form a stepping track (1) with an integrated structure. S4, operate the TBM host (4) to perform the cutter head raising operation. After the cutter head raising operation is completed, remove the pipes and wires between the TBM host (4) and the supporting system (5), and connect the TBM host (4) and the supporting system (5) with steel wire rope. S5, the pushing device (2) is fixedly installed on the stepping base (11) at the tail of the TBM host (4). The power output end of the pushing device (2) is connected to the tail of the TBM host (4). After the pushing device (2) is installed, the pushing device (2) is operated to push the TBM host (4) to travel on the stepping track (1). At this time, the TBM host (4) pulls the rear supporting system (5) to travel synchronously through the steel wire rope. When the rear supporting system (5) travels, the rear supporting track (10) is laid in the travel gap. S6. When the G1 car and connecting bridge are fully inside the stepping base, remove the trolley connecting shaft, use a jack to lift the G1 car and connecting bridge, then remove the starting wheels (7) and the rear matching rail (10), and install the inclined wheel (6). S7. After the TBM main unit (4) has fully entered the starting hole (92), remove the pushing device (2) and the wire rope, use a hand hoist to adjust the rear supporting trolley to a suitable position, then install the drag cylinder, connect the pipeline and wires of the TBM main unit (4) and the rear supporting system (5), after the connection is completed, lay the rear supporting track (10) on the stepping base (11) and the stepping is completed.

9. An open-type TBM stepping device according to claim 8, characterized in that, In S2, the first three trolleys are equipped with starting wheels (7), and the remaining trolleys are equipped with inclined wheels (6).

10. An open-type TBM stepping device according to claim 8, characterized in that, In S4, the steps of the cutter head raising operation are as follows: using the main push cylinder partition control function of the TBM host (4), the two cylinders in the lower zone are extended to a set stroke, and then the cylinders in the upper zone are retracted to a set stroke. Through this operation, the front shield and the cutter head are raised to a certain angle, and then the front shield and the support shield are fixed together by the connecting beam to maintain the raising state during the stepping process.

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