Lining profiling reinforcing device suitable for tunnel collapse accident

Abstract

The invention provides a lining profiling reinforcing device suitable for tunnel collapse accidents, and relates to the field of emergency rescue of tunnel collapse accidents. After a tunnel collapses, a safe working environment is provided for rescue workers, and therefore a damaged vault in a metastable state needs to be reinforced. At present, emergency departments mostly adopt a method of temporarily building a supporting body to reinforce a damaged vault, however, the manual operation action is rough, secondary collapse of a tunnel is easily caused, the operation time is long, and the built supporting body occupies a large space, so that the smooth development of rescue work is influenced. According to the profiling reinforcing device, the multi-degree-of-freedom chain is adopted for conducting profiling attaching on the inner wall of the tunnel, power is provided for the profiling attaching procedure of all the chain links through gear transmission, and when all the chain links are fixed to the rack, reinforcing work on the inner wall of the tunnel is completed. An automatic operation mode is adopted, irregular damaged vaults can be supported and reinforced, and safety guarantee can be provided for rescue workers.

Description

Technical Field

[0001] This invention relates to the field of emergency rescue for tunnel collapse accidents. Background Technology

[0002] Loose soil, rainwater seepage, and excessive cavities can trigger tunnel collapses. To rescue people trapped inside tunnels promptly, a safe working environment is crucial. Emergency departments often use the method of erecting support beams; however, this method can cause significant impact on tunnels with loose soil structures, potentially leading to secondary collapses. Furthermore, the erection process is time-consuming and space-consuming, hindering the smooth progress of rescue operations. Therefore, developing a new type of reinforcement device is of significant importance. Summary of the Invention

[0003] To address the shortcomings of existing emergency rescue technologies for tunnel collapse accidents, this invention provides a contour-following reinforcement device for tunnel linings. It utilizes a multi-degree-of-freedom chain to contour-fit the tunnel's inner wall. Each chain link uses the preceding link, fixed to the same frame, as its fulcrum for contour-following the inner wall. After the contour-following process is completed, the chain is fixed to the frame, thus evolving into the frame itself, providing fulcrums for the subsequent chain links. When all chain links are fixed, the inner wall reinforcement is complete. This invention can reinforce damaged tunnels and provide safety assurance for emergency rescue operations.

[0004] The technical solution adopted in this invention is: a lining contour reinforcement device suitable for tunnel collapse accidents, the main body of which is a multi-degree-of-freedom chain with a drive wheel at a hinge point. Its motor and electromagnet are controlled by CPU instructions. The feature is that: the drive wheel 118 and its electromagnet 117 on the frame 4 execute reinforcement commands, driving the push rod 116 to provide energy for the contour reinforcement process of the first link 1. After the first link 1 is close to the rock mass and fixed to the frame 4, the first link 1, which has evolved into the frame, gives the next stage drive wheel 218 a definite movement. The next stage drive wheel 218 repeats the action of the drive wheel 118. When all the links are fixed, the reinforcement work is completed. The last link drive wheel 318 and its electromagnet 317 execute the release reinforcement command, driving the push rod 316 to provide energy for the release reinforcement process of the last link 3. After the last link 3 is released, the previous stage drive wheel 218 repeats the action of the drive wheel 318. When all the links are released, the release reinforcement work is completed.

[0005] Preferably, the reinforcement instruction in the CPU instruction is as follows: when electromagnet 117 is energized, stepper motor 401 rotates clockwise; when limit switch 107 is open, electromagnet 117 is de-energized and electromagnet 217 is energized; when limit switch 207 is open, electromagnet 217 is de-energized and electromagnet 317 is energized; when limit switch 307 is open, electromagnet 317 is de-energized and stepper motor 401 is de-energized.

[0006] Preferably, the CPU instruction for removing the hardening is as follows: Electromagnet 317 is energized, stepper motor 401 rotates clockwise until limit switch 307 is closed, stepper motor 401 rotates counterclockwise 120 degrees, and electromagnet 317 is de-energized; Electromagnet 217 is energized, stepper motor 401 continues to rotate clockwise until limit switch 207 is closed, stepper motor 401 rotates counterclockwise 120 degrees, and electromagnet 217 is de-energized; Electromagnet 117 is energized, stepper motor 401 continues to rotate clockwise until limit switch 107 is closed, stepper motor 401 rotates counterclockwise 120 degrees and then stops rotating, and electromagnet 117 is de-energized.

[0007] Preferably, the drive wheel 118 rotates counterclockwise and drives the push rod 116 on it to push the slider 119 built into the chain link slide 103. The slider 119 indirectly drives the chain link 1 to rotate counterclockwise around the frame hinge point by squeezing the compression spring 104 on the crank 105. When the support rod 114 is obstructed by the rock and the chain link stops rotating, the slider 119 further squeezes the compression spring 104 to move itself deeper into the slide 103. When the slider 119 moves to an intersecting... When the brake clamp of the structure is in position, the protrusion 123 of the slider opens the lower side 107 of the brake clamp, and the upper side 101 of the brake clamp with rubber pads clamps the brake ring 113 on the frame. At this point, the chain link is tightly attached to the rock mass and temporarily fixed to the frame 4. When the slider 119 continues to move to the locking groove 110 position, the locking rod 122 of the slider 119 will be pulled down into the locking groove 110 by the tension spring 121, so that the slider 119 cannot move in the opposite direction, and the chain link is fixed to the frame 4.

[0008] Preferably, the drive wheel 318 rotates counterclockwise and drives its upper push rod 316 to push the slider 319 built into the chain link slide 303. The slider 319 pulls the locking rod 322 to move along the rising rail 308, gradually disengaging it from the locking groove 310. When the direction of the vertical component of the tension force of the tension spring 321 changes from bottom to top, the locking rod 322 is pulled to the limit plate 320 by the tension spring 321. The slider 319 is no longer restricted by the locking groove 310 and can move in the opposite direction. At the same time, the recessed part 324 of the slider 319 causes the lower side 307 of the brake clamp to close and the upper side 307 to close. When the brake clamp is opened, the upper limit switch 302 of the brake clamp is pressed by the upper side 301 of the brake clamp and sends a low-level signal to the CPU. The CPU sends a command to make the drive wheel 318 rotate clockwise. The compression spring 304 is decompressed and pushes the locking rod 322 on the slider 319 to move along the descending rail 312 so that it approaches the two wall surfaces of the slide rail 303. When the vertical force direction of the tension spring 321 changes from up to down, the locking rod 322 is pulled to the two wall surfaces of the slide rail 303 by the tension spring 321. Finally, the slider 319 is limited by the limiting groove 311 and stops moving, and the chain link is released from fixation.

[0009] Preferably, push rods 116, 216, and 316 are telescopic bodies with internal compression springs, which will not fully extend if obstructed during the extension process.

[0010] Preferably, the frame 4 includes a retractable support end 402 made of rubber, and the frictional torque generated between the support end 402 and the inner wall of the tunnel can ensure the stability of the frame 4.

[0011] The beneficial effects of this invention are: (1) After the device conforms to the irregular collapsed inner wall, its chain links are fixed to the frame. The resulting rigid structure has a strong bearing capacity. The device's tight fit to the inner wall minimizes the movement space of the rock mass, thus eliminating the risk of secondary tunnel collapse induced by rescue activities to a certain extent and providing a safety guarantee for emergency rescue work. (2) The device adopts an automated operation mode, which is more efficient than the conventional support pile reinforcement method, which can save a lot of valuable time for rescue work, and at the same time avoid the collapse of the body from injuring rescue personnel; (3) The device has shape-following characteristics and can adaptively reinforce the inner wall of different shapes of collapsed walls, with strong adaptability; (4) The motor provides energy for the shaping and fixing process of the chain links of the device through gear transmission. The chain links only bear the weight of the chain during rotation, so the working power is small and the robustness is high. (5) The device has a one-click retraction feature, and can be quickly retracted when the tunnel does not need reinforcement.

[0012] Figure 1 This is an isometric view of the device.

[0013] Figure 2 This is a front view of the device.

[0014] Figure 3 This is a rear view of the device.

[0015] Figure 4 This is a diagram of the base of the device's chain link.

[0016] Figure 5 This is a secondary drawing of the device's chain link base.

[0017] Figure 6 This is a diagram of the chain link slider of the device.

[0018] Figure 7 This is a diagram of the brushes in the device's chain segment.

[0019] Figure 8 This is an assembly drawing of the device chain links.

[0020] Figure 9 This is a drawing of the assembly of the chain links of the device.

[0021] Figure 10This is a diagram of the device frame.

[0022] Figure 11 This is the electrical schematic diagram of the device.

[0023] Figure 12 This is a schematic diagram of the device operation.

Claims

1. A lining contour reinforcement device suitable for tunnel collapse accidents, the main body of which is a multi-degree-of-freedom chain with a drive wheel at a hinge point, and its motor and electromagnet are controlled by CPU instructions, characterized in that: The drive wheel (118) and its electromagnet (117) on the frame (4) execute the reinforcement command, driving the push rod (116) to provide energy for the contour reinforcement process of the first link (1). After the first link (1) is close to the rock mass and fixed to the frame (4), the first link (1) which has evolved into the frame makes the next stage drive wheel (218) have a definite movement. The next stage drive wheel (218) repeats the action of the drive wheel (118). When all the links are fixed, the reinforcement work is completed. The drive wheel (318) of the last link and its electromagnet (317) execute the release reinforcement command, driving the push rod (316) to provide energy for the release reinforcement process of the last link (3). After the last link (3) is released, the previous stage drive wheel (218) repeats the action of the drive wheel (318). When all the links are released, the release reinforcement work is completed.

2. The lining contour reinforcement device for tunnel collapse accidents according to claim 1, characterized in that: The reinforcement command is as follows: when the electromagnet (117) is energized, the stepper motor (401) rotates clockwise; when the limit switch (102) is open, the electromagnet (117) is de-energized and the electromagnet (217) is energized; when the limit switch (202) is open, the electromagnet (217) is de-energized and the electromagnet (317) is energized; when the limit switch (302) is open, the electromagnet (317) is de-energized and the stepper motor (401) is de-energized.

3. The lining contour reinforcement device for tunnel collapse accidents according to claim 1, characterized in that: The unreinforcement command is as follows: When the electromagnet (317) is energized, the stepper motor (401) rotates clockwise until the limit switch (302) is closed, the stepper motor (401) rotates counterclockwise 120 degrees, and the electromagnet (317) is de-energized; when the electromagnet (217) is energized, the stepper motor (401) continues to rotate clockwise until the limit switch (202) is closed, the stepper motor (401) rotates counterclockwise 120 degrees, and the electromagnet (217) is de-energized; when the electromagnet (117) is energized, the stepper motor (401) continues to rotate clockwise until the limit switch (102) is closed, the stepper motor (401) rotates counterclockwise 120 degrees and then stops rotating, and the electromagnet (117) is de-energized.

4. The lining contour reinforcement device for tunnel collapse accidents according to claim 1, characterized in that: The chain link contouring reinforcement process is as follows: the drive wheel (118) rotates counterclockwise and drives the push rod (116) on it to push the slider (119) built into the chain link slide (103). The slider (119) indirectly drives the chain link (1) to rotate counterclockwise around the hinge point of the frame through the compression spring (104). When the support rod (114) is obstructed by the rock mass and the chain link stops rotating, the slider (119) further compresses the compression spring (104) to move itself deeper into the slide (103). When the slider (119) moves to an intersecting... When the brake clamp of the structure is in position, the protrusion (123) of the slider causes the lower side (107) of the brake clamp to open, and the upper side (101) of the brake clamp with rubber pads clamps the brake ring (113). At this point, the chain link is tightly attached to the rock mass and temporarily fixed to the frame (4). When the slider (119) continues to move to the locking groove (110) position, the locking rod (122) of the slider (119) will be pulled down into the locking groove (110) by the tension spring (121), so that the slider (119) cannot move in the opposite direction, and the chain link is fixed to the frame (4).

5. A lining contour reinforcement device suitable for tunnel collapse accidents according to claim 1, characterized in that: The chain link release and reinforcement process is as follows: the drive wheel (318) rotates counterclockwise and drives its upper push rod (316) to push the slider (319) built into the chain link slide (303). The slider (319) pulls the locking rod (322) to move along the rising rail (308) so that it gradually disengages from the locking groove (310). When the direction of the vertical component of the tension force of the tension spring (321) changes from bottom to top, the locking rod (322) is pulled to the limit plate (320) by the tension spring (321). The slider (319) is no longer restricted by the locking groove (310) and can move in the opposite direction. At the same time, the recessed part (324) of the slider (319) makes the lower side (307) of the brake clamp... When the upper side (301) is closed and opened, the upper limit switch (302) of the brake clamp is pressed by the upper side (301) of the brake clamp and sends a low-level signal to the CPU. The CPU sends a command to make the drive wheel (318) rotate clockwise. The compression spring (304) is decompressed and pushes the locking rod (322) on the slider (319) to move along the descending rail (312) so that it approaches the two walls of the slide (303). When the vertical force direction of the tension spring (321) changes from up to down, the locking rod (322) is pulled to the two walls of the slide (303) by the tension spring (321). Finally, the slider (319) is limited by the limiting groove (311) and stops moving, and the chain link is released from fixation.

6. The lining contour reinforcement device for tunnel collapse accidents according to claim 1, characterized in that: The push rods (116), (216), and (316) are telescopic bodies with internal compression springs. If they are obstructed during the extension process, they will not extend completely.

7. The lining contour reinforcement device for tunnel collapse accidents according to claim 1, characterized in that: The frame (4) includes a retractable support end (402) made of rubber. The frictional torque generated between the support end (402) and the inner wall of the tunnel can ensure the stability of the frame (4) shape.

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