Double-shield TBM airborne automatic cable storing and extending device

Abstract

The utility model discloses a double-shield TBM onboard automatic cable storing and extending device which comprises a cable dragging table, an I-shaped cylinder is installed at the rearmost end of the upper portion of the cable dragging table, a cable is wound on the surface of the I-shaped cylinder, a plurality of clamping mechanisms are installed on the upper surface of the cable dragging table and located at the front end of the I-shaped cylinder, and the clamping mechanisms are arranged on the upper surface of the cable dragging table. A clamping mechanism is arranged on the middle portion of the I-shaped cylinder, positioning mechanisms are arranged at the bottoms of the two ends of the I-shaped cylinder, a frame is slidably installed between the clamping mechanism on the rearmost portion and the I-shaped cylinder, two first driving columns are symmetrically installed on the rear portion of the frame, and a second driving column is installed on the front portion of the frame. The positioning mechanism and the clamping mechanisms are arranged in the device, and a first driving column and a second driving column are driven to move through stretching and retracting of a driving air cylinder, so that the positioning mechanism can fix an I-shaped barrel, the multiple clamping mechanisms can clamp an output cable, and the stability of the I-shaped barrel on the surface of a cable dragging table is ensured; and the cable is effectively prevented from loosening, shifting or shaking.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a dual-shield TBM airborne automatic cable storage and extension device. Background Technology

[0002] The double-shield TBM is a tunnel boring machine suitable for various complex geological conditions, including soft rock, hard rock, and alternating soft and hard rock strata. Due to the massive scale of the mine drainage system project, the coal company found that the conventional rock tunneling and general excavation methods were too slow, leading to a tight drainage system. Therefore, the company introduced the double-shield TBM for main roadway development to solve the problem of long-distance development roadways in the mine panel and accelerate the formation of the panel drainage system.

[0003] For example, Chinese utility model patent (CN222593067U) discloses a TBM high-voltage cable recycling device, including a rotating roller frame. A base plate is provided on the lower surface of the rotating roller frame, and a fixing structure is symmetrically fixedly connected to the upper surface of the base plate. The base plate is connected to the rotating roller frame through the fixing structure. A groove is provided on the outer wall of the rotating roller, and circular plates are symmetrically fixedly connected to the side walls of the rotating roller. The other side of the circular plates is in clearance fit with the inner side wall of the rotating roller frame. The grooves on the side walls of the rotating roller can fit against the cable, facilitating cable winding. Simultaneously, the circular plates on both sides provide shielding. The large-sized circular plates can wrap the TBM high-voltage cable around the outer wall of the rotating roller, preventing the TBM high-voltage cable from tangling in the gaps during winding. This ensures the safety of the TBM high-voltage cable while enabling an orderly winding process, reducing wear and extending the cable's service life. This helps improve the efficiency and performance of the TBM, ensuring the quality, service life, and operational safety of the cable.

[0004] However, when the inventors implemented this device, they found the following defects: TBM operates in a complex underground environment, and vibrations will occur during operation, making the cable prone to twisting, shaking, and other problems. Utility Model Content

[0005] Therefore, it is necessary to address the aforementioned technical issues. TBMs operate in complex underground environments, and vibrations occur during operation, which can easily cause cables to twist or sway.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A dual-shield TBM airborne automatic cable storage and extension device includes a cable trolley. An I-shaped cylinder is mounted at the rear end of the cable trolley, and cables are wound around its surface. Multiple clamping mechanisms are arranged on the upper surface of the cable trolley and at the front end of the I-shaped cylinder. These clamping mechanisms are used to clamp the output cables. Positioning mechanisms are provided at the bottom of both ends of the I-shaped cylinder for fixing it. A frame is slidably mounted between the rearmost clamping mechanism and the I-shaped cylinder. Two first drive columns are symmetrically mounted at the rear of the frame, cooperating with the positioning mechanisms. A second drive column is mounted at the front of the frame, cooperating with the multiple clamping mechanisms.

[0008] As a preferred embodiment of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model, the cable drag platform is provided with a drive cylinder inside, and two sliding grooves are symmetrically opened on the surface of the cable drag platform. The bottom of the frame is slidably installed in the sliding grooves, and a horizontal plate is fixedly installed on the bottom of the frame. The output end of the drive cylinder is fixedly connected to the horizontal plate.

[0009] As a preferred embodiment of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model, the positioning mechanism includes a square frame. A slot is provided at one end of the square frame near the I-shaped cylinder. The end of the I-shaped cylinder is movably engaged in the slot. Two L-shaped clamping bars are symmetrically installed inside the square frame. The corners of the L-shaped clamping bars are connected to the inner wall of the square frame via a pivot. Matching grooves are provided on both sides of the slot. The front end of the L-shaped clamping bar is movably installed in the matching groove. A spring is provided on the rear surface of the L-shaped clamping bar, and the end of the spring is connected to the inner wall of the square frame.

[0010] In a preferred embodiment of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model, a positioning surface is fixedly installed at the front end of the L-shaped clamping bar, and the positioning surface is made of rubber.

[0011] In a preferred embodiment of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model, a movable groove is provided at one end of the square frame away from the I-shaped cylinder, the end of the first drive column is movably inserted into the movable groove, a semi-circular head is provided behind the L-shaped clamping bar, and an inclined surface is provided at the end of the first drive column, the inclined surface cooperating with the semi-circular head.

[0012] In a preferred embodiment of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model, a protective frame is installed on the outer side of the I-shaped cylinder, and the side of the square frame is connected to the protective frame by bolts.

[0013] As a preferred embodiment of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model, the clamping mechanism includes a fixed platform, the upper surface of which is provided with a semi-circular groove, the cable output from the I-shaped cylinder is movably installed inside the semi-circular groove, a clamping surface is provided above the fixed platform, the cable is arranged between the clamping surface and the fixed platform, connecting strips are installed on both sides of the fixed platform through a rotating shaft, the connecting strips are fixedly connected to both sides of the clamping surface by bolts, and the connecting strips are set in an inclined shape.

[0014] In a preferred embodiment of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model, a rectangular block is installed on the top of the connecting strip, a lifting ring is provided on the top of the rectangular block, the second drive column passes through the lifting ring, and a stop block is installed on the surface of the second drive column and on both the front and rear ends of the lifting ring.

[0015] As a preferred embodiment of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model, a path groove is provided at the front end of the frame, and the end of the second drive column is movably engaged in the path groove.

[0016] As a preferred embodiment of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model, the end of the semicircular groove is provided with an arc-shaped chamfer, and the inner wall of the semicircular groove is provided with a smooth surface.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By extending and retracting the drive cylinder, its output end pushes the horizontal plate, thereby causing the frame to slide in the slide groove, completing the control of the first drive column and the second drive column, thus realizing the positioning and fixing of the I-shaped cylinder and the cable.

[0019] The positioning mechanism fixes the I-shaped cylinder, ensuring that the I-shaped cylinder with the cable wrapped around it is in a stable position on the cable drag platform, preventing it from shaking or shifting during the operation of the tunnel boring machine, providing a reliable basis for the orderly storage and release of the cable, and reducing cable entanglement and chaos caused by the instability of the I-shaped cylinder.

[0020] Multiple clamping mechanisms clamp the output cable, which can effectively prevent the cable from loosening, shifting or shaking due to external forces such as vibration and dragging of the tunnel boring machine during transmission, ensuring the accuracy of the cable's position during transmission, reducing the risk of cable damage and extending the cable's service life.

[0021] This device ensures smooth cable extension, preventing damage caused by excessive pulling and tugging, which could affect the normal movement and operation of the equipment. Attached Figure Description

[0022] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure.

[0024] Figure 2 This is a structural diagram of the overall structure from another perspective;

[0025] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 4 This is a cross-sectional view of the positioning mechanism.

[0027] The markings in the diagram are explained as follows:

[0028] 1. Cable tray; 2. Protective frame; 3. I-shaped cylinder; 4. Positioning mechanism; 5. Clamping mechanism; 6. Drive cylinder; 7. Horizontal plate; 8. Frame; 9. First drive column; 10. Second drive column; 11. Square frame; 12. L-shaped clamping bar; 13. Positioning surface; 14. Semi-circular head; 15. Spring; 16. Fixing platform; 17. Semi-circular groove; 18. Connecting bar; 19. Clamping surface; 20. Rectangular block; 21. Lifting ring; 22. Stop block. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.

[0030] As described in the background section, TBMs operate in complex underground environments, and vibrations occur during operation, which can easily cause cables to twist or sway.

[0031] To solve this technical problem, this utility model provides a dual-shield TBM onboard automatic cable storage and extension device, comprising a cable trolley 1, an I-shaped cylinder 3 installed at the rear end of the cable trolley 1, with cables wound on the surface of the I-shaped cylinder 3, and multiple clamping mechanisms 5 arranged on the upper surface of the cable trolley 1 at the front end of the I-shaped cylinder 3 for clamping the output cables, positioning mechanisms 4 provided at the bottom of both ends of the I-shaped cylinder 3 for fixing the I-shaped cylinder 3, and a frame 8 slidably installed between the rearmost clamping mechanism 5 and the I-shaped cylinder 3, with two first drive columns 9 symmetrically installed at the rear of the frame 8, the first drive columns 9 cooperating with the positioning mechanisms 4, and a second drive column 10 installed at the front of the frame 8, the second drive column 10 cooperating with the multiple clamping mechanisms 5.

[0032] By setting a positioning mechanism 4 and a clamping mechanism 5 inside the device, and by extending and retracting the drive cylinder 6, the first drive column 9 and the second drive column 10 are moved. Thus, the positioning mechanism 4 can fix the I-shaped cylinder 3, and the multiple clamping mechanisms 5 can clamp the output cable, ensuring the stability of the I-shaped cylinder 3 on the surface of the cable drag platform 1, and effectively preventing the cable from loosening, shifting or shaking due to external forces such as vibration and dragging of the tunnel boring machine during the transmission process.

[0033] Example 1

[0034] Please refer to Figure 1-4 A dual-shield TBM airborne automatic cable storage and extension device, wherein a drive cylinder 6 is provided inside the cable drag platform 1, and two symmetrical grooves are opened on the surface of the cable drag platform 1. The bottom of the frame 8 is slidably installed in the grooves, and a horizontal plate 7 is fixedly installed on the bottom of the frame 8. The output end of the drive cylinder 6 is fixedly connected to the horizontal plate 7.

[0035] By extending and retracting the drive cylinder 6, its output end pushes the horizontal plate 7, which in turn drives the frame 8 to slide in the groove. This allows the frame 8 to flexibly change its position according to actual needs, and to control the first drive column 9 and the second drive column 10, thereby achieving the positioning and fixing of the I-shaped cylinder 3 and the cable.

[0036] Example 2

[0037] Further optimizations to Example 1, specifically, such as... Figure 1-4 As shown, the positioning mechanism 4 includes a square frame 11. A slot is provided at one end of the square frame 11 near the I-shaped cylinder 3. The end of the I-shaped cylinder 3 is movably engaged in the slot. Two L-shaped clamping bars 12 are symmetrically installed inside the square frame 11. The corners of the L-shaped clamping bars 12 are connected to the inner wall of the square frame 11 through a pivot. Matching grooves are provided on both sides of the slot. The front end of the L-shaped clamping bar 12 is movably installed in the matching groove. A spring 15 is provided on the surface of the L-shaped clamping bar 12 near the rear. The end of the spring 15 is connected to the inner wall of the square frame 11.

[0038] The L-shaped clamping bar 12 is connected to the inner wall of the square frame 11 via a pivot, and its front end is movably installed in the mating groove. When the end of the I-shaped cylinder 3 is inserted into the groove, the bottom of the L-shaped clamping bar 12 moves outward, and the front end of the L-shaped clamping bar 12 will exert a certain squeezing force on the end face of the I-shaped cylinder 3, thereby fixing the I-shaped cylinder 3. At the same time, a spring 15 is provided near the rear of the L-shaped clamping bar 12, and the spring 15 will provide a certain elastic force so that the L-shaped clamping bar 12 will not apply clamping force to the I-shaped cylinder 3 when it is not subjected to external force.

[0039] The front end of the L-shaped clamping bar 12 is fixedly installed with a positioning surface 13, and the positioning surface 13 is made of rubber.

[0040] The rubber material has a high coefficient of friction. When the L-shaped clamping strip 12 clamps the I-shaped cylinder 3, the positioning surface 13 contacts the surface of the I-shaped cylinder 3, which can generate greater friction. This can effectively prevent the I-shaped cylinder 3 from sliding or displacing in the slot, improve the stability and reliability of positioning, and ensure the connection of the entire structure is stable.

[0041] A movable groove is provided at the end of the square frame 11 away from the I-shaped cylinder 3. The end of the first drive column 9 is movably inserted into the movable groove. A semi-circular head 14 is provided behind the L-shaped clamping bar 12. An inclined surface is provided at the end of the first drive column 9, and the inclined surface cooperates with the semi-circular head 14.

[0042] By movably inserting the end of the first drive column 9 into the movable slot of the square frame 11, and having its end bevel engage with the semi-circular head 14 behind the L-shaped clamping bar 12, when the first drive column 9 is pushed to move within the movable slot, its bevel will press against the semi-circular head 14. Due to this engagement structure of the bevel and the semi-circular head 14, the linear motion of the first drive column 9 can be converted into the rotational motion of the L-shaped clamping bar 12 around the axis. This design makes the clamping action of the positioning mechanism 4 more flexible and controllable.

[0043] A protective frame 2 is installed on the outside of the I-shaped cylinder 3, and the side of the square frame 11 is connected to the protective frame 2 by bolts.

[0044] The protective frame 2 is installed on the outside of the I-shaped tube 3, which can provide direct physical protection for the I-shaped tube 3. In the complex working environment of the tunnel boring machine, it can prevent foreign objects such as gravel and tools from directly impacting the I-shaped tube 3, avoid damage to the I-shaped tube 3 due to collision, and extend its service life. At the same time, the square frame 11 is connected to the protective frame 2 by bolts, which can position the square frame 11.

[0045] The clamping mechanism 5 includes a fixed platform 16, and a semi-circular groove 17 is provided on the upper surface of the fixed platform 16. The cable output from the I-shaped cylinder 3 is movably installed inside the semi-circular groove 17. A clamping surface 19 is provided above the fixed platform 16. The cable is arranged between the clamping surface 19 and the fixed platform 16. Connecting bars 18 are installed on both sides of the fixed platform 16 through a rotating shaft. The connecting bars 18 are fixedly connected to both sides of the clamping surface 19 by bolts. The connecting bars 18 are set in an inclined shape.

[0046] A semi-circular groove 17 is provided on the fixed platform 16. Its shape is adapted to the circular outline of the cable, which can fit the cable surface well and provide a stable support and positioning foundation for the cable. This makes it difficult for the cable to roll or deviate during the clamping process, ensuring the accuracy and stability of the clamping. The clamping surface 19 cooperates with the fixed platform 16 to clamp the cable in the middle. The connecting bar 18 is set at an angle. When the connecting bar 18 moves and rotates backward around the pivot, the inclined connecting bar 18 will drive the clamping surface 19 to move down, thereby clamping the cable and making the cable firmly fixed in the clamping mechanism 5. This effectively prevents the cable from loosening due to external forces such as vibration and dragging during the operation of the tunnel boring machine.

[0047] A rectangular block 20 is installed on the top of the connecting strip 18, and a lifting ring 21 is provided on the top of the rectangular block 20. The second drive column 10 passes through the lifting ring 21, and a stop block 22 is installed on the surface of the second drive column 10 and on the front and rear ends of the lifting ring 21.

[0048] The design of the second drive column 10 and the lifting ring 21 allows the stop block 22 to apply a certain pushing force to the lifting ring 21 when the second drive column 10 moves backward, thereby completing the control of the connecting bar 18. This allows the operator to operate the clamping mechanism 5 relatively easily. This structure can quickly clamp or loosen the cable, improving work efficiency.

[0049] Example 3

[0050] Further optimizations to Example 2, such as Figure 1-4 As shown, a path groove is provided at the front end of the frame 8, and the end of the second drive column 10 is movably engaged in the path groove.

[0051] The movable snap-fit ​​method ensures that the second drive column 10 can move flexibly while maintaining a relatively stable positional relationship between it and the frame 8.

[0052] The end of the semicircular groove 17 is provided with an arc-shaped chamfer, and the inner wall of the semicircular groove 17 is provided with a smooth surface; the arc-shaped chamfer avoids the sharp edges from scratching the cable sheath, reducing the risk, and the smooth inner wall further reduces the friction between the cable and the semicircular groove 17, which can effectively reduce friction loss and extend the service life of the cable.

[0053] The usage process of the dual-shield TBM airborne automatic cable storage and extension device provided by this utility model is as follows:

[0054] First, when the cable stops outputting, the drive cylinder 6 pushes the horizontal plate 7 towards the I-shaped cylinder 3, thereby causing the frame 8 to slide in the groove. At the same time, the first drive column 9 and the second drive column 10 also move towards the I-shaped cylinder 3. The end of the first drive column 9 moves into the depth of the movable groove of the square frame 11, and its end bevel presses against the semi-circular head 14, causing the bottom of the L-shaped clamping bar 12 to move outward. The front end of the L-shaped clamping bar 12 will exert a certain pressure on the end face of the I-shaped cylinder 3, thereby fixing the I-shaped cylinder 3. At the same time, when the second drive column 10 moves backward, the stop block 22 applies a certain pushing force to the lifting ring 21, and the connecting bar 18 as a whole moves and rotates towards the rear of the device around the pivot. The inclined connecting bar 18 will cause the clamping surface 19 to move downward, thereby clamping the cable and making the cable firmly fixed in the clamping mechanism 5.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A dual-shield TBM airborne automatic cable storage and extension device, characterized in that, It includes a cable tray (1), an I-shaped cylinder (3) is installed at the rear end of the cable tray (1), the surface of the I-shaped cylinder (3) is wound with cables, and multiple clamping mechanisms (5) are arranged on the upper surface of the cable tray (1) and at the front end of the I-shaped cylinder (3). The clamping mechanisms (5) are used to clamp the output cables. Positioning mechanisms (4) are provided at the bottom of both ends of the I-shaped cylinder (3). The positioning mechanisms (4) are used to fix the I-shaped cylinder (3). A frame (8) is slidably installed between the clamping mechanism (5) at the rear end and the I-shaped cylinder (3). Two first drive columns (9) are symmetrically installed at the rear of the frame (8). The first drive columns (9) cooperate with the positioning mechanisms (4). A second drive column (10) is installed at the front of the frame (8). The second drive column (10) cooperates with the multiple clamping mechanisms (5).

2. The dual-shield TBM airborne automatic cable storage and extension device according to claim 1, characterized in that, The cable tray (1) is equipped with a drive cylinder (6) inside. Two sliding grooves are symmetrically opened on the surface of the cable tray (1). The bottom of the frame (8) is slidably installed in the sliding groove. A horizontal plate (7) is fixedly installed on the bottom of the frame (8). The output end of the drive cylinder (6) is fixedly connected to the horizontal plate (7).

3. The dual-shield TBM airborne automatic cable storage and extension device according to claim 1, characterized in that, The positioning mechanism (4) includes a square frame (11). A slot is provided at one end of the square frame (11) near the I-shaped cylinder (3). The end of the I-shaped cylinder (3) is movably engaged in the slot. Two L-shaped clamping bars (12) are symmetrically installed inside the square frame (11). The corner of the L-shaped clamping bar (12) is connected to the inner wall of the square frame (11) through a pivot. Matching grooves are provided on both sides of the slot. The front end of the L-shaped clamping bar (12) is movably installed in the matching groove. A spring (15) is provided on the surface of the L-shaped clamping bar (12) near the rear. The end of the spring (15) is connected to the inner wall of the square frame (11).

4. The dual-shield TBM airborne automatic cable storage and extension device according to claim 3, characterized in that, The front end of the L-shaped clamping bar (12) is fixedly installed with a positioning surface (13), and the positioning surface (13) is made of rubber.

5. The dual-shield TBM airborne automatic cable storage and extension device according to claim 4, characterized in that, The square frame (11) has a movable groove at one end away from the I-shaped cylinder (3), and the end of the first drive column (9) is movably inserted into the movable groove. A semi-circular head (14) is provided behind the L-shaped clamping bar (12), and an inclined surface is provided at the end of the first drive column (9), which cooperates with the semi-circular head (14).

6. The dual-shield TBM airborne automatic cable storage and extension device according to claim 5, characterized in that, A protective frame (2) is installed on the outside of the I-shaped tube (3), and the side of the square frame (11) is connected to the protective frame (2) by bolts.

7. The dual-shield TBM airborne automatic cable storage and extension device according to claim 1, characterized in that, The clamping mechanism (5) includes a fixed platform (16), and a semi-circular groove (17) is provided on the upper surface of the fixed platform (16). The cable output from the I-shaped cylinder (3) is movably installed inside the semi-circular groove (17). A clamping surface (19) is provided above the fixed platform (16). The cable is arranged between the clamping surface (19) and the fixed platform (16). Connecting bars (18) are installed on both sides of the fixed platform (16) through a rotating shaft. The connecting bars (18) are fixedly connected to both sides of the clamping surface (19) by bolts. The connecting bars (18) are set in an inclined shape.

8. The dual-shield TBM airborne automatic cable storage and extension device according to claim 7, characterized in that, A rectangular block (20) is installed on the top of the connecting strip (18), and a lifting ring (21) is provided on the top of the rectangular block (20). The second drive column (10) passes through the lifting ring (21), and a stop block (22) is installed on the surface of the second drive column (10) and on the front and rear end faces of the lifting ring (21).

9. The dual-shield TBM airborne automatic cable storage and extension device according to claim 8, characterized in that, The front end of the frame (8) is provided with a path groove, and the end of the second drive column (10) is movably engaged in the path groove.

10. The dual-shield TBM airborne automatic cable storage and extension device according to claim 7, characterized in that, The end of the semicircular groove (17) is provided with an arc-shaped chamfer, and the inner wall of the semicircular groove (17) is provided with a smooth surface.

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