TBM split starting temporary cable following host forward moving device

Abstract

The utility model provides a TBM (Tunnel Boring Machine) split launching temporary cable following host forward moving device, which belongs to the technical field of TBM split launching and comprises a carrier roller support system, a hanger rail, a movable wire hooping device and a side support. According to the utility model, the carrier roller supporting system is designed on the inner side of the starting vertical shaft and is used for supporting a temporary cable in the stage that the TBM main engine descends into the shaft in advance for tunneling, so that the starting of the TBM main engine is ensured to be smoothly carried out; the hanging rail and the movable wire hooping device are matched to suspend and bear the temporary cable, the temporary cable can follow the temporary cable along with forward movement of the tunneling process, and meanwhile, due to sliding connection of the movable wire hooping device and the design of the side support, the situations of cable winding, pulling and the like can be avoided, and the temporary cable is effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of TBM split-starting technology, specifically a device for a TBM split-starting temporary cable to follow the host machine forward. Background Technology

[0002] TBMs play a central and crucial role in modern tunnel engineering due to their advantages such as high automation, fast construction speed, good safety, minimal environmental impact, strong adaptability, all-weather operation, and reduced impact on surface structures. TBM launch is a critical step in TBM construction, and ensuring its safety and efficiency is paramount.

[0003] Tunnel construction often faces challenges such as deep depth, limited space, and tight schedule, making it difficult to launch the TBM as a whole. When launching the TBM in sections, there are often issues with the arrangement of temporary cables. To address these challenges, this invention provides a device for moving the temporary cables of the TBM in sections forward with the main unit. Utility Model Content

[0004] To address the problem of unreasonable temporary cable arrangement during TBM split-type launch, this utility model provides a device for the temporary cable of TBM split-type launch to move forward with the main unit.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A TBM split-type starting temporary cable follow-the-host forward movement device includes:

[0007] A roller support system is fixedly installed on the inner side of the launching shaft;

[0008] The suspension rail is fixedly installed on the inner side of the launching hole by a triangular fixing bracket, and the suspension rail is along the length of the launching hole;

[0009] A movable clamp is slidably installed on the hoist rail. A side support is fixedly connected to the side of the movable clamp away from the starting shaft. The side support is fixedly installed at the bottom of the hoist rail and provides elastic support force along the length of the hoist rail.

[0010] The movable clamp is connected to a ring-shaped nylon rope.

[0011] As a further description of the above technical solution:

[0012] The idler roller support system includes:

[0013] A portal frame, wherein the portal frame is welded from transverse channel steel and longitudinal channel steel;

[0014] The movable roller is horizontally positioned and rotatably mounted on the top of the gantry bracket. Offset correction columns are installed on the top of the gantry bracket at both ends of the movable roller.

[0015] As a further description of the above technical solution:

[0016] The gantry bracket and movable roller are provided in multiple sets, and the multiple sets of gantry bracket and movable roller are linearly distributed.

[0017] As a further description of the above technical solution:

[0018] The tripod bracket includes:

[0019] The second support is horizontally set and fixedly installed to the inside of the starting hole. The hanging rail is fixedly connected to the second support.

[0020] The first and third supports are connected above and below the second support.

[0021] As a further description of the above technical solution:

[0022] The side support includes:

[0023] Two sets of parallel V-shaped frames, one end of which is fixedly connected to the side of the movable clamp;

[0024] Two sets of V-shaped frames are fixedly connected to a connecting plate at the end away from the movable clamp. The connecting plate has an elongated hole and is fixedly installed to the hanging rail by bolts.

[0025] As a further description of the above technical solution:

[0026] The top of the roller support system is at the same elevation as the bottom edge of the suspension rail.

[0027] The beneficial effects of this utility model are:

[0028] This invention utilizes a roller support system designed on the inner side of the starting shaft to support temporary cables during the initial tunneling phase of the TBM main unit, ensuring the smooth start of the TBM main unit. The suspension rail and movable cable clamp work together to suspend and support the temporary cables, which can follow the tunneling process. At the same time, the sliding connection and side support design of the movable cable clamp can prevent cable entanglement and pulling, effectively protecting the temporary cables. Attached Figure Description

[0029] The following figures are shown to more clearly illustrate a TBM split-type starting temporary cable following the host machine's forward movement device;

[0030] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0031] Figure 2 This is a front view of the present invention;

[0032] Figure 3 for Figure 1 Partial view of point A in the middle;

[0033] Figure 4 This is a three-dimensional schematic diagram of a flexible frame.

[0034] The labels in the attached diagram;

[0035] 1. Launching shaft; 2. Launching tunnel; 3. Idler support system; 301. Portal bracket; 302. Movable idler; 303. Offset correction column; 4. Triangular fixing frame; 401. First bracket; 402. Second bracket; 403. Third bracket; 5. Hanging rail; 6. Movable hoop; 6a. Circular nylon rope; 7. Side support; 701. V-shaped frame; 702. Connecting plate; 703. Long hole. Detailed Implementation

[0036] Please refer to the attached document. Figure 1 - Figure 4 This application illustrates a TBM split-type starting temporary cable following host forward movement device provided in an embodiment of the present application, including: roller support system 3, hanging rail 5, movable cable clamp 6, and side support 7.

[0037] The idler roller support system 3 is fixedly installed inside the starting shaft 1. It is used to support temporary cables during the initial tunneling stage of the TBM main unit, ensuring the smooth start of the TBM main unit. The hanging rail 5 is fixedly installed inside the starting tunnel 2 by the triangular fixing bracket 4. The hanging rail 5 is along the length of the starting tunnel 2. The movable cable clamp 6 is slidably installed on the hanging rail 5. The movable cable clamp 6 is distributed along the length of the hanging rail 5, for example, a set is set at 2m intervals. The side of the movable cable clamp 6 away from the starting shaft 1 is fixedly connected to the side support 7. The side support 7 is fixedly installed at the bottom of the hanging rail 5. The side support 7 provides elastic support force along the length of the hanging rail 5 to limit the sliding range of the movable cable clamp 6. The movable cable clamp 6 is connected to the ring nylon rope 6a, which is used to suspend the temporary cable.

[0038] Specifically, the idler support system 3 includes: a portal frame 301, a movable idler 302, and offset correction columns 303. The portal frame 301 is welded from transverse channel steel and longitudinal channel steel. The movable idler 302 is horizontally set and rotatably installed on the top of the portal frame 301. Offset correction columns 303 are installed on the top of the portal frame 301 and at both ends of the movable idler 302. Multiple sets of portal frames 301 and movable idlers 302 are provided. The multiple sets of portal frames 301 and movable idlers 302 are linearly distributed. Generally, a set of portal frames 301 and movable idlers 302 is set every 1m.

[0039] Specifically, the triangular fixing frame 4 includes: a second bracket 402, a first bracket 401, and a third bracket 403. The second bracket 402 is horizontally set and fixedly installed on the inner side of the starting hole 2. The hanging rail 5 is fixedly connected to the second bracket 402. The first bracket 401 and the third bracket 403 are connected above and below the second bracket 402, respectively. The first bracket 401 and the third bracket 403 are used to improve the stability of the second bracket 402. The third bracket 403 is designed to be slightly shorter to avoid interfering with the installation of the hanging rail 5.

[0040] Specifically, the side support 7 includes two sets of parallel V-shaped frames 701 and a connecting plate 702.

[0041] One end of the V-shaped frame 701 is fixedly connected to the side of the movable clamp 6. The ends of the two sets of V-shaped frames 701 away from the movable clamp 6 are fixedly connected to the connecting plate 702. The connecting plate 702 has an elongated hole 703. The connecting plate 702 is fixedly installed to the hanging rail 5 by bolts and relies on the elastic support generated by the deformation of the V-shaped frame 701.

[0042] To ensure a smooth transition of the temporary cable on the movable cable clamp 6 of the roller support system 3 and the hanging rail 5, the top of the roller support system 3 is generally designed to be at the same elevation as the bottom edge of the hanging rail 5.

[0043] The process of using a TBM split-type starting temporary cable following the host machine's forward movement device includes the following steps:

[0044] S1: After the excavation and support of the TBM hoisting shaft and the starting tunnel are completed, and before the hoisting is lowered into the shaft, pre-embedded parts connected to the cable gantry bracket are pre-embedded at 1m intervals on the shaft foundation, and pre-embedded parts connected to the triangular fixing frame are pre-embedded on the side wall of the starting tunnel.

[0045] S2: After the TBM split launching equipment is hoisted into the well, the cable gantry bracket 301 (base support beam position) is welded to the embedded part on the vertical shaft side, and then the column and crossbeam are welded in sequence to increase the stability of the gantry bracket 301.

[0046] S3: Install movable rollers 302 and weld offset correction columns 303 on the upper part of the vertical shaft side cable gantry bracket.

[0047] S4: The second bracket, the first bracket and the third bracket (all of which are made of channel steel) are welded sequentially on the embedded parts of the side wall of the starting hole to form a triangular fixing frame 4.

[0048] S5: Weld the hanging rail to the lower part of the triangular fixing bracket 4.

[0049] S6: Construct the main frame of the movable cable clamp 6, and install steel wheels and nylon ropes on the main frame of the movable cable clamp 6 to form multiple movable cable clamps 6.

[0050] S7: Install multiple movable clamps 6 on the hanging rail.

[0051] S8: After the TBM split launching equipment is assembled, the temporary cable is folded and placed on the cable gate bracket on the side of the shaft and suspended on the movable cable clamp in the launching hole.

[0052] S9: At this point, as the TBM advances forward, the temporary cables can automatically move forward with the main unit.

[0053] Using a TBM split-type starting temporary cable to follow the host machine's forward movement has at least the following advantages:

[0054] First, it reduces the start-up time: In situations where the start-up space is limited, this device allows the TBM main unit to be lowered into the well and start tunneling first, without waiting for all the supporting equipment to be in place, thus greatly shortening the start-up preparation time and enabling the TBM to enter the normal tunneling state earlier.

[0055] Secondly, it increases tunneling speed: As the main unit moves forward, the temporary cable following device can promptly and orderly retract and organize the cables, avoiding problems such as cable tangling and pulling, ensuring the continuity and stability of the main unit during tunneling, and thus increasing tunneling speed.

[0056] Third, reduce equipment modification costs: Compared to large-scale modifications to the TBM's downstream equipment to accommodate separate launch, using temporary cables to follow the main unit's forward movement device can achieve separate launch functionality without altering the original equipment's main structure, reducing the complexity and cost of equipment modification.

[0057] Fourth, reduced pipeline extension costs: This device effectively manages temporary cables, avoiding substantial additional pipeline procurement and installation costs caused by disorderly cable extensions. During the split-type launch process, only temporary cables need to be rationally arranged and adjusted according to actual needs, without the need for large-scale extensions of all pipelines.

[0058] Fifth, reduce construction risks: During the separate launch process, the connection and coordination between the main unit and the subsequent supporting equipment are quite complex, making cable management particularly important. The temporary cable forward-moving device ensures the safety and reliability of the cables during the main unit's movement, preventing equipment downtime or safety accidents due to cable failures, and protecting the safety of construction personnel and equipment.

[0059] Sixth, reducing space constraints: For some projects with limited starting space, this device enables the TBM to start smoothly in a limited space, avoiding other high-risk construction solutions due to insufficient space, such as excessive compression of equipment layout and forced assembly, thereby reducing safety risks during construction.

[0060] Seventh, ensuring the normal operation of supporting systems: When the TBM is launched in a split configuration, the main unit needs the support of basic supporting systems to function properly. The temporary cable forward movement device following the main unit ensures stable connection and transmission of cables for critical supporting systems such as the high-voltage power supply system, control system, and hydraulic system, enabling the main unit to obtain reliable energy and signal support during the split launch phase and maintain the normal operation of each system.

[0061] Eighth, reduce system failure rate: By managing cables properly, damage and failures caused by external factors (such as squeezing, abrasion, pulling, etc.) are reduced, the system failure rate caused by cable problems is lowered, and the overall system stability during the initial TBM split operation is improved.

[0062] Ninth, adaptable to different engineering needs: This device can flexibly adjust the cable layout and management method according to the starting space conditions and construction requirements of different projects, and has strong versatility and adaptability, which can meet the TBM split starting needs under various complex working conditions.

[0063] Tenth, it facilitates equipment adjustment and restoration: During the split-type launching process, the cables can be adjusted and optimized at any time according to the actual situation as the tunneling progresses. When the TBM completes the split-type launching stage and it is necessary to connect the downstream supporting equipment with the main unit to form a whole, it is also easy to quickly restore the original equipment layout and pipeline connections, improving the flexibility and convenience of the construction process.

[0064] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0065] It should be understood that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. This invention is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A device for a TBM split-type starting temporary cable to follow the host machine forward movement, characterized in that, include: The idler support system (3) is fixedly installed on the inner side of the launching shaft (1); The hanging rail (5) is fixedly installed on the inner side of the starting hole (2) by a triangular fixing bracket (4), and the hanging rail (5) is along the length direction of the starting hole (2); A movable clamp (6) is slidably installed on the hoist (5). A side support (7) is fixedly connected to the side of the movable clamp (6) away from the starting shaft (1). The side support (7) is fixedly installed at the bottom of the hoist (5) and provides elastic support force along the length of the hoist (5). The movable clamp (6) is connected to a ring-shaped nylon rope (6a).

2. The TBM split-type starting temporary cable following the host machine's forward movement device according to claim 1, characterized in that, The idler support system (3) includes: A portal frame (301) is welded from transverse channel steel and longitudinal channel steel; The movable roller (302) is horizontally arranged and rotatably mounted on the top of the gantry bracket (301). Offset correction columns (303) are installed on the top of the gantry bracket (301) and at both ends of the movable roller (302).

3. The TBM split-type starting temporary cable following the host machine's forward movement device according to claim 2, characterized in that: The gantry bracket (301) and movable roller (302) are provided in multiple sets, and the multiple sets of gantry bracket (301) and movable roller (302) are linearly distributed.

4. The TBM split-type starting temporary cable following the host machine's forward movement device according to claim 1, characterized in that, The triangular fixing bracket (4) includes: The second bracket (402) is horizontally arranged and fixedly installed on the inner side of the starting hole (2). The hanging rail (5) is fixedly connected to the second bracket (402). The first support (401) and the third support (403) are connected above and below the second support (402).

5. A TBM split-type starting temporary cable following the host machine's forward movement device according to claim 1, characterized in that, The side support (7) includes: Two sets of parallel V-shaped frames (701), one end of which is fixedly connected to the side of the movable wire clamp (6); Two sets of V-shaped frames (701) are fixedly connected to a connecting plate (702) at the end away from the movable clamp (6). The connecting plate (702) has an elongated hole (703) and is fixedly installed to the hanging rail (5) by bolts.

6. The TBM split-type starting temporary cable following the host machine's forward movement device according to claim 1, characterized in that: The top of the roller support system (3) is at the same elevation as the bottom edge of the hanging rail (5).

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