Tunnel advanced geological forecast endoscope

Abstract

The invention relates to the technical field of geological advanced forecasting equipment, in particular to a tunnel advanced geological forecasting endoscope which comprises a probe and a lead connected to the tail of the probe. A detection part is arranged at the front end of the probe, and a drilling part is arranged at the tail of the probe, so that the drilling part can drive the probe to move towards the lead when rotating. When the tunnel advanced geological forecast endoscope is used, the geological environment in a hole can be detected when the probe gradually goes deep into the drilled detection hole and the environment in the hole is shot through the endoscope. If the detection hole collapses, the drilling part rotates to push away collapsed soil, and then a channel for the endoscope to pass through is formed. In other words, when the endoscope cannot retreat from the detection hole, a new channel can be formed through drilling of the drilling part, and then the endoscope can be taken out smoothly.

Description

Technical Field

[0001] The invention relates to the technical field of geological advance prediction equipment, and in particular to a tunnel geological advance prediction endoscope. Background Art

[0002] The geological advance prediction in tunnel construction is an important technical means to detect the geological conditions ahead and predict potential risks (such as faults, caves, water gushing, etc.) before excavation, so as to optimize the construction plan and ensure safety. The prediction methods of existing technologies all need to be combined with complex algorithms, and have high requirements on construction quality and equipment. The endoscope method can directly capture the internal conditions of the stratum through the camera, which is more intuitive and simple. The specific method includes the following steps: first, select a suitable location for drilling, and then put the endoscope into the drilled detection hole to capture the situation inside the detection hole.

[0003] However, after the endoscope enters the detection hole, the detection hole may collapse, especially in some broken and loose strata. When the detection hole collapses, the endoscope in the prior art can only be taken out of the detection hole by forcible pulling. This may cause the entire device to be pulled and damaged, and may even make it impossible to take out the endoscope. Summary of the invention

[0004] The object of the present invention is to provide a tunnel advanced geological prediction endoscope, which can escape through a drilling part to avoid being unable to be taken out when a detection hole collapses.

[0005] The embodiments of the present invention are implemented by the following technical solutions: A tunnel advanced geological prediction endoscope comprises a probe and a lead wire connected to the tail of the probe; the front end of the probe is provided with a detection part and the tail is provided with a drilling part, so that the drilling part can drive the probe to move in the direction of the lead wire when it rotates.

[0006] Furthermore, the probe is provided with a center rod; the drilling part is rotatably arranged on the center rod; the detection part is connected to the other end of the center rod; the detection part is also provided with a locking mechanism; the locking mechanism includes a screw rod, a locking motor and a plurality of locking rods; a plurality of the locking rods are distributed around the center rod and hinged to the center rod, so that a plurality of the locking rods can be swung to protrude from the outer wall of the center rod or be accommodated inside the center rod; a plurality of the locking rods are provided with transmission teeth; the screw rod is passed between a plurality of the locking rods and meshes with the transmission teeth of a plurality of the locking rods, so that the rotation of the screw rod can drive a plurality of the locking rods to open or tighten; the screw rod is connected to the locking motor.

[0007] Furthermore, a sliding sleeve is sleeved on the outside of the central rod; the detection part is connected to the sliding sleeve so that the detection part can slide relative to the central rod.

[0008] Furthermore, a tension spring is provided between the detection part and the center rod, so that the tension spring can tighten the center rod and the detection part.

[0009] Furthermore, one end of the center rod is provided with a connection end connected to the lead wire; the drilling part includes a drill bit and a plurality of excitation coils; the plurality of excitation coils are arranged around the connection end; the drill bit is tubular and is sleeved on the outside of the connection end; the inner wall of the drill bit is equipped with a permanent magnet for the plurality of excitation coils, so that the drill bit rotates when the excitation coil is energized.

[0010] Furthermore, it also includes a rotating cylinder; the rotating cylinder is rotatably sleeved on the outside of the connecting end; a plurality of permanent magnets are arranged on the inner wall of the rotating cylinder; the drill bit is sleeved on the outside of the rotating cylinder and fixed to the rotating cylinder by screws.

[0011] Furthermore, it also includes a guide cylinder; the guide cylinder is fixedly sleeved on the outer wall of the center rod, and a gap is reserved between the guide cylinder and the outer wall of the center rod for the sliding sleeve to extend into.

[0012] Furthermore, the drill bit is conical and the outer wall is arranged in a spiral shape.

[0013] Furthermore, the detection portion is provided with a receiving groove for receiving the locking rod; the locking rod is wrapped with a dustproof cloth on the outside; and the dustproof cloth blocks the gap between the locking rod and the receiving groove.

[0014] Furthermore, a slide groove is provided on the surface of the center rod along its length direction; and a slider is provided on the slide sleeve in cooperation with the slide groove, so that the slider is embedded in the slide groove and can slide along the slide groove.

[0015] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects: When the tunnel advanced geological prediction endoscope of the present invention is used, the geological environment in the hole can be detected by gradually inserting the probe into the drilled detection hole and photographing the environment in the hole through the endoscope. If the detection hole collapses, the drilling part can rotate to push away the collapsed soil, thereby forming a passage for the endoscope to pass through. In other words, when the endoscope cannot be withdrawn from the detection hole, a new passage can be formed by drilling the drilling part, thereby allowing the endoscope to be smoothly removed.

[0016] When the drill bit rotates, a locking rod is provided to prevent the entire probe from rotating. When several locking rods are opened, they can be embedded in the hole wall, thereby preventing the entire probe from rotating and allowing the drill bit to be effectively pushed forward. The detection part and the center rod are tightened by the tension spring to shorten the overall length for easy storage. When the drill bit is in motion, the detection part is fixed to the hole wall by the locking rod. As the drill bit continues to drill, the tension spring is stretched. Subsequently, the locking rod is retracted to separate the detection part from the hole wall, and then the detection part moves toward the center rod under the action of the tension spring, which also moves the entire probe a certain distance out of the hole. Repeating this process several times will get you out of trouble. At the same time, the cooperation between the sleeve and the center rod makes the sliding between the detection part and the center rod more stable and reliable.

[0017] The excitation coil is set at the connection end, so that the drill bit can be set as a hollow structure, which is convenient for the lead wire to be led out from the center of the drill bit, which is more conducive to getting out of trouble. The permanent magnet is set inside the rotating cylinder, which can be combined with several excitation coils to form a motor structure, thereby driving the drill bit to rotate. At the same time, the drill bit is fixed to the rotating cylinder by screws, making the drill bit easy to disassemble and maintain. The guide cylinder is set to prevent mud and sand from entering the sliding sleeve and one end of the drill bit during sliding, ensuring smooth sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the interior of the tunnel advanced geological prediction endoscope of the present invention.

[0019] Figure 2 Schematic diagram of the locking lever being retracted.

[0020] Figure 3 It is a schematic diagram of the locking mechanism being arranged on the center rod.

[0021] Figure 4 for Figure 1 Enlarged view of point a in the middle.

[0022] Figure 5 This is a schematic diagram of the probe normally entering the detection hole.

[0023] Figure 6 Schematic diagram of the probe being freed through the drill bit.

[0024] Figure markings: 1-lead, 2-center rod, 3-screw rod, 4-locking motor, 5-locking rod, 6-transmission tooth, 7-detector, 8-sleeve, 9-tension spring, 10-connecting end, 11-excitation coil, 12-permanent magnet, 13-rotating cylinder, 14-guide cylinder, 15-drill bit, 16-slide groove, 17-detection hole. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 6As shown, this embodiment provides a tunnel advanced geological prediction endoscope, including a probe and a lead 1 connected to the tail of the probe. The lead 1 is a wire harness, which includes a power line and a control line. In order to enhance the strength of the lead 1, a metal wire or the like may be wrapped on the outside. A detection part is provided at the front end of the probe and a drilling part is provided at the tail, so that the probe can be driven to move in the direction of the lead 1 when the drilling part rotates. Specifically, a detector 7 is provided inside the probe, which includes a camera, a light source and other sensors. Endoscopes are already mature technologies and are not described in detail in the specification. The drilling part includes a drill bit 15, which is provided at the tail of the probe. The drill bit 15 is tapered as a whole and the outer wall is arranged in a spiral shape, which makes it easy for the tip to enter the rock and soil. At the same time, the spiral shape makes it similar to a screw, which can gradually enter the rock and soil during rotation. The drill bit 15 can also be of other types, as long as it can drill the rock and soil.

[0026] When the tunnel advanced geological prediction endoscope of the present invention is used, the geological environment in the hole can be detected when the probe gradually goes deep into the drilled detection hole 17 and the environment in the hole is photographed through the endoscope. If the detection hole 17 collapses, the drilling part can rotate to push away the collapsed soil, thereby forming a channel for the endoscope to pass through. In other words, when the endoscope cannot be withdrawn from the detection hole 17, a new passage can be formed by drilling the drilling part, thereby allowing the endoscope to be smoothly removed.

[0027] In this embodiment, the probe is provided with a central rod 2. Figure 3 As shown, the drilling part is rotatably arranged on the center rod 2. The detection part is connected to the other end of the center rod 2. The detection part is also provided with a locking mechanism. The locking mechanism includes a screw 3, a locking motor 4 and a plurality of locking rods 5. The plurality of locking rods 5 are distributed around the center rod 2 and are hinged to the center rod 2, so that the plurality of locking rods 5 can swing to protrude from the outer wall of the center rod 2 or be accommodated inside the center rod 2. The plurality of locking rods 5 are all provided with transmission teeth 6. The screw 3 is passed through the plurality of locking rods 5 and meshes with the transmission teeth 6 of the plurality of locking rods 5, so that the rotation of the screw 3 can drive the plurality of locking rods 5 to open or tighten. The screw 3 is connected to the locking motor 4. The locking motor 4 drives the screw 3 to rotate, thereby causing the plurality of locking rods 5 to open or tighten.

[0028] When the drill bit 15 rotates, in order to prevent the entire probe from rotating, a locking rod 5 is provided. A plurality of locking rods 5 are opened to be embedded in the hole wall, thereby preventing the entire probe from rotating, so that the drill bit 15 is effectively pushed forward.

[0029] In this embodiment, a sliding sleeve 8 is sleeved on the outside of the center rod 2. Figure 1 and Figure 2 As shown, the detector is connected to the sliding sleeve 8 so that the detector can slide relative to the central rod 2. This allows the detector to move relative to the drill bit 15.

[0030] When the drill bit 15 is in motion, the detection part is fixed to the hole wall by the locking rod 5. As the drill bit 15 continues to drill, the detection part and the drill bit 15 gradually move away. Then, the locking rod 5 is tightened and the detection part moves toward the drill bit 15. This causes the entire probe to move a distance outside the hole. The escape can be completed by repeating the above actions several times. In order to prevent the center rod 2 from rotating relative to the detection part as the drill bit 15 rotates, a slide groove 16 is provided on the surface of the center rod 2 along its length direction. The sliding sleeve 8 is provided with a slider in conjunction with the slide groove 16, so that the slider is embedded in the slide groove 16 and can slide along the slide groove 16 without rotating. Figure 1 and Figure 2 As shown, after the sliding sleeve 8 is provided, the locking mechanism is provided on the detection part.

[0031] In order to facilitate the detection part to approach the drill bit 15, a tension spring 9 is also provided between the detection part and the center rod 2, so that the tension spring 9 tightens the center rod 2 and the detection part. The detection part and the center rod 2 are tightened by the tension spring 9, so that the overall length becomes shorter, which is convenient for storage. When the drill bit 15 is in motion, the detection part is fixed to the hole wall by the locking rod 5. As the drill bit 15 continues to drill, the tension spring 9 is stretched. Subsequently, the locking rod 5 is retracted to separate the detection part from the hole wall, and then the detection part is moved toward the center rod 2 under the action of the tension spring 9, so that the entire probe moves a certain distance outside the hole. Repeating this process several times will get you out of trouble.

[0032] In this embodiment, a connection end 10 for connecting the lead wire 1 is provided at one end of the center rod 2. The drilling part includes a drill bit 15 and a plurality of excitation coils 11. The plurality of excitation coils 11 are arranged around the connection end 10. The drill bit 15 is tubular and is sleeved on the outside of the connection end 10. The inner wall of the drill bit 15 is provided with a permanent magnet 12 for each of the excitation coils 11 so that the drill bit 15 rotates when the excitation coils 11 are energized. The cooperation principle of the excitation coil 11 and the permanent magnet 12 is the same as that of the motor, and will not be repeated in the specification.

[0033] The excitation coil 11 is arranged at the connection end 10 so that the drill bit 15 can be arranged as a hollow structure, which facilitates the lead wire 1 to be led out from the center of the drill bit 15, and is more conducive to getting out of trouble. Otherwise, the lead wire 1 can only be led out from the side of the probe, thereby forming a convex part on the surface of the probe, which makes it inconvenient to remove the probe from the rock and soil.

[0034] In this embodiment, a rotating drum 13 is also included. Figure 4 As shown, the rotating cylinder 13 is rotatably sleeved on the outside of the connecting end 10. A plurality of permanent magnets 12 are arranged on the inner wall of the rotating cylinder 13. The drill bit 15 is sleeved on the outside of the rotating cylinder 13 and fixed to the rotating cylinder 13 by screws.

[0035] The permanent magnet 12 is arranged inside the rotating cylinder 13, and it can be combined with a plurality of excitation coils 11 to form a motor structure, thereby driving the drill bit 15 to rotate. At the same time, the drill bit 15 is fixed to the rotating cylinder 13 by screws, so that the drill bit 15 is easy to disassemble and maintain. In practice, the rotating cylinder 13 can be fixed to the central rod 2 so that it can only rotate but not be disassembled. Only the drill bit 15 can be disassembled and replaced.

[0036] In this embodiment, a guide cylinder 14 is also included. The guide cylinder 14 is fixedly sleeved on the outer wall of the center rod 2, and a gap is reserved between the guide cylinder 14 and the outer wall of the center rod 2 for the sleeve 8 to extend into. The sleeve 8 can just enter and exit this gap. The guide cylinder 14 is provided so that mud and sand will not enter the sleeve 8 and one end of the drill bit 15 during the sliding process of the sleeve 8, thereby ensuring smooth sliding. At the same time, the outer diameter of the largest end of the drill bit 15 is larger than the outer diameter of the guide cylinder 14, and the outer diameter of the guide cylinder 14 is larger than the outer diameter of the sleeve 8. This makes the outer diameter of the probe gradually decrease from the drill bit 15 to the end of the detector 7. In other words, after the drill bit 15 drills in and passes through, all the components at the rear can pass through relatively smoothly. This ensures the effect of getting out of trouble.

[0037] In this embodiment, the detector is provided with a receiving groove for receiving the locking rod 5. The locking rod 5 is wrapped with a dustproof cloth. The dustproof cloth blocks the gap between the locking rod 5 and the receiving groove. The dustproof cloth is provided in the same principle and structure as the dustproof cloth around the gear lever of a car. This prevents mud and sand from entering the gap, thereby preventing the locking rod 5 from getting stuck.

Claims

1. A tunnel advanced geological prediction endoscope, characterized by: It comprises a probe and a lead wire connected to the tail of the probe; the front end of the probe is provided with a detection part and the tail is provided with a drilling part, so that when the drilling part rotates, it can drive the probe to move in the direction of the lead wire.

2. The tunnel advanced geological prediction endoscope according to claim 1 is characterized in that: The probe is provided with a center rod; the drilling part is rotatably arranged on the center rod; the detection part is connected to the other end of the center rod; the detection part is also provided with a locking mechanism; the locking mechanism includes a screw rod, a locking motor and a plurality of locking rods; a plurality of the locking rods are distributed around the center rod and are hinged to the center rod, so that a plurality of the locking rods can be swung to protrude from the outer wall of the center rod or be accommodated inside the center rod; a plurality of the locking rods are provided with transmission teeth; the screw rod is passed between a plurality of the locking rods and meshes with the transmission teeth of a plurality of the locking rods, so that the rotation of the screw rod can drive a plurality of the locking rods to open or tighten; the screw rod is connected to the locking motor.

3. The tunnel advanced geological prediction endoscope according to claim 2 is characterized by: The central rod is sleeved with a sliding sleeve on its exterior; the detection part is connected to the sliding sleeve so that the detection part can slide relative to the central rod.

4. The tunnel advanced geological prediction endoscope according to claim 3 is characterized by: A tension spring is also arranged between the detection part and the center rod, so that the tension spring can tighten the center rod and the detection part.

5. The tunnel advanced geological prediction endoscope according to claim 4 is characterized in that: One end of the center rod is provided with a connection end connected to the lead wire; the drilling part includes a drill bit and a plurality of excitation coils; the plurality of excitation coils are arranged around the connection end; the drill bit is tubular and is sleeved on the outside of the connection end; the inner wall of the drill bit is equipped with a permanent magnet on the plurality of excitation coils so that the drill bit rotates when the excitation coil is energized.

6. The tunnel advanced geological prediction endoscope according to claim 2 is characterized in that: It also includes a rotating cylinder; the rotating cylinder is rotatably sleeved on the outside of the connecting end; a plurality of permanent magnets are arranged on the inner wall of the rotating cylinder; the drill bit is sleeved on the outside of the rotating cylinder and fixed to the rotating cylinder by screws.

7. The tunnel advanced geological prediction endoscope according to claim 6 is characterized by: It also includes a guide cylinder; the guide cylinder is fixedly sleeved on the outer wall of the center rod, and a gap is reserved between the guide cylinder and the outer wall of the center rod for the sliding sleeve to extend into.

8. The tunnel advanced geological prediction endoscope according to claim 7 is characterized by: The drill bit is conical and the outer wall is arranged in a spiral shape.

9. The tunnel advanced geological prediction endoscope according to claim 8, characterized in that: The detection part is provided with a receiving groove for receiving the locking rod; the locking rod is wrapped with a dustproof cloth outside; the dustproof cloth covers the gap between the locking rod and the receiving groove.

10. The tunnel advanced geological prediction endoscope according to claim 9, characterized in that: The surface of the center rod is provided with a slide groove along its length direction; the slide sleeve is provided with a slider to cooperate with the slide groove, so that the slider is embedded in the slide groove and can slide along the slide groove.

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