A battery car automatic alarm system for shield construction

Abstract

The present application relates to the technical field of shield construction, in particular to a battery car automatic alarm system for shield construction. The present application discloses a battery car automatic alarm system for shield construction, which comprises: a speed detection module, used for detecting the speed information of the battery car running on the track in the tunnel; a signal transmission module, used for transmitting the speed information of the battery car collected by the speed detection module to the tunnel and the ground duty room in real time; an overspeed alarm module, which starts to send alarm information to the tunnel and the ground when the battery car loses speed; the speed detection module comprises a radar speed detection device arranged in the tunnel, and the signal transmission module comprises a wired optical fiber cable arranged on the tunnel inner side wall. The present application sends an alarm in the tunnel and outside the tunnel as soon as the battery car loses speed, improves the stability and firmness of the radar speed detection device installation, and avoids the irregular jump of the radar speed detection device due to vibration.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) construction technology, specifically to an automatic alarm system for a battery-powered TBM vehicle that can slip off during TBM construction. Background Technology

[0002] The use of tunnel boring machines (TBMs) in subway construction is becoming increasingly common. Within the underground working space, the TBM's head excavates forward, while several battery-powered cars (also called trolleys) are connected to the rear. These cars carry various necessary materials and equipment, enabling simultaneous excavation, soil transport, and segment laying. When traversing slopes or under heavy loads, the battery-powered cars may slip. Anti-slip devices are typically installed at the front and rear of the cars; timely activation prevents slippage. Failure to activate these devices promptly or if they malfunction can cause the car to run off the tracks and lose speed.

[0003] The most important task after an electric vehicle stalls is to evacuate the personnel working inside the tunnel. In the current technology, after personnel outside the tunnel, the electric vehicle driver, or the ground duty room discover the situation, they need to notify the signalman or the main engine room driver inside the tunnel via walkie-talkie, duty room phone, or WeChat call. Then, the main engine room driver or signalman will relay the information to other personnel working inside the tunnel. The information transmission process is long and cannot notify all personnel inside the tunnel immediately. The reaction time and evacuation time for personnel working inside the tunnel are short, which poses a significant safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic alarm system for slippage of battery-powered vehicles used in tunnel boring machine (TBM) construction, in order to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic alarm system for slippage of a battery-powered vehicle used in shield tunneling, the system comprising: a speed detection module for detecting the speed information of the battery-powered vehicle traveling on the track inside the tunnel; The signal transmission module is used to transmit the speed information of the electric vehicle collected by the speed detection module to the tunnel and the ground duty room in real time. The overspeed alarm module sends alarm messages to the tunnel and the ground when the electric vehicle loses speed. The speed detection module includes a radar speed measuring device installed inside the tunnel, the signal transmission module includes a wired fiber optic cable installed on the inner wall of the tunnel, and the overspeed alarm module includes several audible alarms. The audible alarms are installed on the shield machine head, the shield machine's supporting electric vehicle, the underground duty room, and the ground duty room to broadcast the electric vehicle's stall information in real time.

[0006] Furthermore, the radar speed measuring device includes a support rod, a radar speed measuring device body, a searchlight, and a camera. The radar speed measuring device body is located in the middle of the support rod, and the searchlight and camera are located at the top of the support rod, used to capture the object to which the data to be measured belongs. The bottom of the support rod is provided with an installation mechanism, and the ground of the tunnel is provided with a shock-absorbing mechanism. The support rod is connected to the shock-absorbing mechanism through the installation mechanism.

[0007] Furthermore, the shock absorption mechanism includes a base, a rubber middle seat on the base along its height direction, a top seat on the rubber middle seat, and the top seat, the rubber middle seat and the base are connected by a threaded rod. A gap is left between the top seat and the base to reduce the vibration force directly transmitted from the base to the top seat.

[0008] Furthermore, the mounting mechanism includes an adjusting rod, one end of which is a center end e, and the other end is a free end. The free end of the adjusting rod is rotatably connected to the support rod and is used to retract and extend the adjusting rod. At least three adjusting rods are provided, and the three adjusting rods are equidistantly distributed along the outer circumference of the support rod.

[0009] Furthermore, the top seat is provided with at least three upward-facing mounting slots, which are arranged in a circular array with the center of the support rod as the center; a connector is rotatably provided below the corresponding center end e on the support rod, and a connecting box is provided on the adjusting rod; when the connector is inserted into the connecting box, the adjusting rod, the support rod, and the connector form a triangular support.

[0010] Furthermore, the connector includes a connecting rod, an arc-shaped positioning block, a rope, a tail plate, and a gravity ball. One end of the connecting rod is rotatably connected to the support rod, and the other end is fixedly connected to the arc-shaped positioning block. An arc-shaped insertion hole is provided through the connector box, and the arc-shaped insertion hole is adapted to the arc-shaped positioning block.

[0011] Furthermore, the arc-shaped positioning block has a through hole one along its arc direction, and the connecting rod has a through hole two along its width direction. One end of the rope is connected to a gravity ball, and the other end of the rope passes through through hole two and through hole one in sequence and is connected to a tail plate. The arc-shaped insertion hole has a rectangular cross-section on the bottom surface of the connecting box, and the rectangle includes adjacent long sides m and short sides n. The side of the tail plate connected to the rope is surface c. The length of one pair of opposite sides in surface c is equal to the length of the long side m, and the length of another pair of opposite sides is greater than the length of the short side n.

[0012] Furthermore, the support rod passes through the top seat and the rubber middle seat and is inserted into the base. The support rod is symmetrically provided with protrusions corresponding to the top seat. The top seat is provided with a groove that matches the protrusions. The support rod is provided with a rubber damping layer corresponding to the base. The rubber damping layer blocks part of the vibration from being transmitted to the support rod.

[0013] The tunnel excavated by the tunnel boring machine head has a circular vertical cross-section. The rails are set at the bottom of the circle, and the base is set on one side of the rails. The battery-powered vehicle travels back and forth on the rails. In order for the base to fit more closely to the inner wall of the tunnel, the base has an arc-shaped surface a, which fits the shape of the inner wall of the tunnel. The base also has a surface b facing the rails. The base has symmetrical threaded holes and includes two bolts. The two bolts pass through the threaded holes and connect to the inner wall of the tunnel. The base has symmetrical lifting rings to facilitate the relocation of the base to a new installation position.

[0014] Furthermore, the base is made of concrete.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention can immediately issue alarms both inside and outside the tunnel when a battery-powered vehicle stalls, notifying all personnel inside the tunnel in a timely manner. This allows for a rapid response and evacuation, minimizing damage caused by the vehicle's stall. A rubber center seat blocks some vibrations from being transmitted to the top seat, and a rubber damping layer further blocks some vibrations from being transmitted to the support rod. The gravity ball at one end of the rope swings back and forth, dissipating some vibrations and ensuring a firm and stable foundation for the radar speed measuring device. This reduces the swaying amplitude of the radar speed measuring device itself when vibrations are transmitted, preventing irregular jumps caused by vibrations. The greater the vibration, the greater the swing amplitude of the gravity ball, resulting in a more secure connection between the arc-shaped positioning block and the arc-shaped insertion hole, and a more robust triangular support, further improving the stability and robustness of the radar speed measuring device installation. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of part of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 3 Enlarged view at point B in the middle; Figure 5 This is a perspective view of the connecting box in this invention; In the diagram: 1. Support rod; 2. Radar speed measuring device body; 3. Searchlight; 4. Camera; 5. Base; 6. Rubber middle seat; 7. Top seat; 8. Adjusting rod; 9. Mounting slot; 10. Connecting box; 11. Connecting rod; 12. Arc-shaped positioning block; 13. Rope; 14. Tail plate; 15. Gravity ball; 16. Arc-shaped insertion hole; 17. Through hole one; 18. Through hole two; 20. Protrusion; 21. Threaded hole; 22. Lifting ring. Detailed Implementation

[0017] 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.

[0018] See Figures 1-5 .

[0019] This invention provides an automatic alarm system for slippage of a battery-powered vehicle used in tunnel boring machine (TBM) construction. The system includes a speed detection module for detecting the speed information of the battery-powered vehicle traveling on the track inside the tunnel. The signal transmission module is used to transmit the speed information of the electric vehicle collected by the speed detection module to the tunnel and the ground duty room in real time. The overspeed alarm module sends alarm messages to the tunnel and the ground when the electric vehicle loses speed. The speed detection module includes a radar speed measuring device installed inside the tunnel, the signal transmission module includes a wired fiber optic cable installed on the inner wall of the tunnel, and the overspeed alarm module includes several audible alarms. The audible alarms are installed on the shield machine head, the shield machine's supporting electric vehicle, the underground duty room, and the ground duty room to broadcast the electric vehicle's stall information in real time.

[0020] The radar speed measuring device includes a support rod 1, a radar speed measuring device body 2, a searchlight 3, and a camera 4. The radar speed measuring device body 2 is located in the middle of the support rod 1, and the searchlight 3 and camera 4 are located at the top of the support rod 1 to capture the object to which the data to be measured belongs. The bottom of the support rod 1 is provided with an installation mechanism, and the ground of the tunnel is provided with a shock-absorbing mechanism. The support rod 1 is connected to the shock-absorbing mechanism through the installation mechanism.

[0021] The shock absorption mechanism includes a base 5, a rubber middle seat 6 along its height direction on the base 5, a top seat 7 on the rubber middle seat 6, and the top seat 7, the rubber middle seat 6 and the base 5 are connected by a threaded rod. A gap is left between the top seat 7 and the base 5 to reduce the vibration force transmitted directly from the base 5 to the top seat 7.

[0022] The installation mechanism includes an adjusting rod 8, one end of which is the center end e, and the other end is the free end of the adjusting rod 8. The free end of the adjusting rod 8 is rotatably connected to the support rod 1 and is used to retract and extend the adjusting rod 8. At least three adjusting rods 8 are provided, and the three adjusting rods 8 are equidistantly distributed along the outer circumference of the support rod 1.

[0023] The top seat 7 is provided with at least three upward-facing mounting slots 9, and the three mounting slots 9 are arranged in a circular array with the center of the support rod 1 as the center; a connector is rotatably provided below the corresponding center end e on the support rod 1, and a connecting box 10 is provided on the adjusting rod 8; when the connector is inserted into the connecting box 10, the adjusting rod 8, the support rod 1 and the connector form a triangular support.

[0024] The connector includes a connecting rod 11, an arc-shaped positioning block 12, a rope 13, a tail plate 14, and a gravity ball 15. One end of the connecting rod 11 is rotatably connected to the support rod 1, and the other end is fixedly connected to the arc-shaped positioning block 12. An arc-shaped insertion hole 16 is provided through the connecting box 10, and the arc-shaped insertion hole 16 is adapted to the arc-shaped positioning block 12.

[0025] The arc-shaped positioning block 12 has a through hole 17 along its arc direction, and the connecting rod 11 has a through hole 18 along its width direction. One end of the rope 13 is connected to a gravity ball 15, and the other end of the rope 13 passes through the through hole 18 and the through hole 17 in sequence and is connected to the tail plate 14. The arc-shaped insertion hole 16 has a rectangular cross-section on the bottom surface of the connecting box 10, and the rectangle includes adjacent long sides m and short sides n. The side of the tail plate 14 connected to the rope 13 is surface c; the length of a pair of opposite sides of surface c is equal to the length of the long side m, and the length of another pair of opposite sides is greater than the length of the short side n. When the tail plate 14 is aligned and attached to the lower surface of the connecting box 10, a pair of opposite sides of the tail plate 14 coincides with the short side n; a pair of long sides m are located between a pair of opposite sides of the tail plate 14, allowing the tilted tail plate 14 to enter the arc-shaped insertion hole 16.

[0026] The support rod 1 passes through the top seat 7 and the rubber middle seat 6 and is inserted into the base 5. The support rod 1 is symmetrically provided with protrusions 20 corresponding to the top seat 7. The top seat 7 is provided with a groove that fits the protrusions 20. The support rod 1 is provided with a rubber damping layer corresponding to the base 5. The rubber damping layer blocks part of the vibration from being transmitted to the support rod 1.

[0027] The base 5 has an arc-shaped surface a, which fits the shape of the tunnel inner wall. The base 5 also has a surface b facing the rail. The base 5 has symmetrical threaded holes 21 and also includes a bolt two. The bolt two passes through the threaded holes 21 and connects to the tunnel inner wall. The base 5 has symmetrical lifting rings 22 to facilitate the relocation of the base 5 to the installation position.

[0028] The base 5 is made of concrete.

[0029] In use, the system is first assembled inside the tunnel: the speed detection module is connected to the signal transmission module, the overspeed alarm module is connected to the signal transmission module, and the signal transmission module is connected to each control room; the radar speed measuring device is installed on one side of the track inside the tunnel, with priority given to areas with a certain slope; wired fiber optic cables are fixed to the inner wall of the tunnel, and the sound column alarms are installed at the shield machine head, the battery-powered vehicle at the rear of the shield machine, the ground duty room, and the underground duty room. The wired fiber optic cables serve as the communication foundation for the entire alarm system. When a stalled electric vehicle is detected, the radar speed measurement device can quickly transmit electrical signals through wired fiber optic cables to the tunnel boring machine (TBM) head, the electric vehicle at the rear of the TBM, the ground control room, and the underground control room. Simultaneously, the audible alarms on the TBM head, the electric vehicle at the rear of the TBM, the ground control room, and the underground control room are activated. This allows for immediate alarms both inside and outside the tunnel when the electric vehicle stalls, notifying all personnel inside the tunnel in a timely manner. This facilitates a rapid response from the personnel working inside the tunnel, ensuring timely evacuation and minimizing damage caused by the electric vehicle stall.

[0030] The accuracy of radar speed measuring devices affects the accuracy of automatic speed alarm systems. When the radar speed measuring device is installed on an unstable foundation, has poor shock absorption, or shakes itself when an electric vehicle passes by, it will cause the radar speed measuring device to fluctuate irregularly. In this case, when installing the radar speed measuring device, the base 5 is placed on one side of the railway track inside the tunnel using the lifting lugs. The arc-shaped a-side is attached to the inner wall of the tunnel, and the b-side faces the railway track. The threaded hole 21 is aligned with the preset hole in the inner wall of the tunnel. Bolt 2 is used to pass through the threaded hole 21 and the preset hole to complete the fixation. The rubber middle seat 6 and the top seat 7 are stacked on the base 5 in sequence. Bolt 1 is used to pass through the top seat 7 and the rubber middle seat 6 and connect to the base 5. The rubber middle seat 6 blocks some of the vibration from being transmitted to the top seat 7. The free end of the adjusting rod 8 is kept lower than the center end e by hand or with the help of tools, and the arc-shaped positioning block 12 of the connecting piece is higher than the connecting rod 11. This makes the installation foundation of the radar speed measuring device firm and stable, reduces the shaking amplitude of the radar speed measuring device itself when there is vibration transmission, and avoids the radar speed measuring device from having irregular jumps due to vibration. Take support rod 1 and insert its bottom into the center of top seat 7, aligning protrusion 20 with the insertion groove to prevent support rod 1 from rotating. When the free end of adjusting rod 8 contacts the upper surface of top seat 7, push the free end outward or inward to align it and insert it into mounting groove 9. Continue pushing support rod 1 outward through rubber middle seat 6 and insert it into base 5. As support rod 1 moves downward, it drives adjusting rod 8 along mounting groove 9 to the bottom of mounting groove 9. Take tail plate 14 and insert it into arc-shaped insertion hole 16 from above, because the cross-section of tail plate 14 is larger than the arc. Because of the cross-section of the arc-shaped insertion hole 16, the tail plate 14 needs to be tilted. The side of the tail plate 14 that is the same length as the long side m first enters the arc-shaped insertion hole 16, and the tail plate 14 is parallel to the long side m. After the tail plate 14 is completely out from under the arc-shaped insertion hole 16, straighten the tail plate 14 and make it fit against the lower surface of the connecting box 10. At this time, the tail plate 14 also drives the rope 13 to pass through the arc-shaped insertion hole 16. Rotate the connector downward so that the connector is inserted into the arc-shaped insertion hole 16 of the connecting box 10. This makes the adjusting rod 8, the support rod 1, and the connector form a triangular support, which strengthens the firmness of the radar speed measuring device installation.

[0031] When some vibration is transmitted to the radar speed measuring device, or when the radar speed measuring device itself vibrates slightly when the electric vehicle passes by, the gravity ball 15 at one end of the rope 13 will swing back and forth to dissipate some of the vibration. During the swing, the centripetal force will pull the rope 13 towards the end with the gravity ball 15, and the other end of the rope 13 will cause the tail plate 14 to fit more tightly against the lower surface of the sealing connection box 10. The section of the rope 13 between the through hole 17 and through hole 2 will press down on the connecting rod 11 to prevent the vibration from causing the connecting rod 11 and the arc-shaped positioning block 12 to rotate upward, thereby avoiding damage to the triangular support. When the vibration is greater, the swing amplitude of the gravity ball 15 is greater, and the connection between the arc-shaped positioning block 12 and the arc-shaped insertion hole 16 is more secure, thereby further improving the stability and firmness of the radar speed measuring device installation.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0033] It should be noted that if the embodiments of the invention involve directional indicators (such as up and down), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Additionally, if the embodiments of the invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more.

[0035] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

Claims

1. An automatic alarm system for slippage of a battery-powered trolley used in tunnel boring machine (TBM) construction, characterized in that, The system includes: a speed detection module, used to detect the speed information of electric vehicles traveling on the track inside the tunnel; The signal transmission module is used to transmit the speed information of the electric vehicle collected by the speed detection module to the tunnel and the ground duty room in real time. The overspeed alarm module sends alarm messages to the tunnel and the ground when the electric vehicle stalls. The speed detection module includes a radar speed measuring device installed inside the tunnel, the signal transmission module includes a wired fiber optic cable installed on the inner wall of the tunnel, and the overspeed alarm module includes several audible alarms. The audible alarms are installed on the shield machine head, the shield machine's supporting electric vehicle, the underground duty room, and the ground duty room to broadcast the electric vehicle's stall information in real time. The radar speed measuring device includes a support rod (1), a radar speed measuring device body (2), a searchlight (3), and a camera (4). The radar speed measuring device body (2) is located in the middle of the support rod (1), and the searchlight (3) and camera (4) are located at the top of the support rod (1) to capture the object to which the data to be measured belongs. The bottom of the support rod (1) is provided with an installation mechanism, and the ground of the tunnel is provided with a shock-absorbing mechanism. The support rod (1) is connected to the shock-absorbing mechanism through the installation mechanism. The shock absorption mechanism includes a base (5), a rubber middle seat (6) on the base (5) along its height direction, a top seat (7) on the rubber middle seat (6), and the top seat (7), the rubber middle seat (6) and the base (5) are connected by a threaded rod. A gap is left between the top seat (7) and the base (5) to reduce the vibration force transmitted directly from the base (5) to the top seat (7). The installation mechanism includes an adjusting rod (8), one end of which is a center end e and the other end is a free end. The center end e of the adjusting rod (8) is rotatably connected to the support rod (1) for retracting and unfolding the adjusting rod (8). At least three adjusting rods (8) are provided, and the three adjusting rods (8) are equidistantly distributed along the outer circumference of the support rod (1). The top seat (7) is provided with at least three upward-facing mounting slots (9), and the three mounting slots (9) are arranged in a circular array with the center of the support rod (1) as the center; a connector is rotatably provided below the corresponding center end e on the support rod (1), and a connecting box (10) is provided on the adjusting rod (8); when the connector is inserted into the connecting box (10), the adjusting rod (8), the support rod (1) and the connector form a triangular support.

2. The automatic alarm system for slippage of the battery-powered trolley used in shield tunneling as described in claim 1, characterized in that, The connector includes a connecting rod (11), an arc-shaped positioning block (12), a rope (13), a tail plate (14), and a gravity ball (15). One end of the connecting rod (11) is rotatably connected to the support rod (1), and the other end is fixedly connected to the arc-shaped positioning block (12). An arc-shaped insertion hole (16) is provided through the connecting box (10), and the arc-shaped insertion hole (16) is adapted to the arc-shaped positioning block (12).

3. The automatic alarm system for slippage of the battery-powered trolley used in shield tunneling as described in claim 2, characterized in that, The arc-shaped positioning block (12) has a through hole 1 (17) along its arc direction, and the connecting rod (11) has a through hole 2 (18) along its width direction. One end of the rope (13) is connected to a gravity ball (15), and the other end of the rope (13) passes through the through hole 2 (18) and the through hole 1 (17) in sequence and is connected to a tail plate (14). The arc-shaped insertion hole (16) has a rectangular cross-section on the bottom surface of the connecting box (10), and the rectangle includes adjacent long side m and short side n. The side of the tail plate (14) connected to the rope (13) is surface c. The length of one pair of opposite sides in surface c is equal to the length of the long side m, and the length of the other pair of opposite sides is greater than the length of the short side n.

4. The automatic alarm system for slippage of the battery-powered trolley used in shield tunneling as described in claim 3, characterized in that, The support rod (1) passes through the top seat (7) and the rubber middle seat (6) and is inserted into the base (5). The support rod (1) is provided with symmetrical protrusions (20) corresponding to the top seat (7). The top seat (7) is provided with a groove that matches the protrusions (20). The support rod (1) is provided with a rubber shock-absorbing layer corresponding to the base (5).

5. The automatic alarm system for slippage of battery-powered trolleys used in tunnel boring machines according to any one of claims 1-4, characterized in that, The base (5) has an arc-shaped a surface that fits the shape of the tunnel inner wall. The base (5) also has a b surface facing the rail. The base (5) has symmetrical threaded holes (21) and also includes a bolt two. The bolt two passes through the threaded holes (21) and connects to the tunnel inner wall. The base (5) has symmetrical lifting rings (22).

6. The automatic alarm system for slippage of the battery-powered trolley used in shield tunneling as described in claim 5, characterized in that, The base (5) is made of concrete.

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