An installation device for laying strong seismograph in hard rock area by using unmanned aerial vehicle

Abstract

The application discloses a mounting device for arranging a strong seismograph in a hard rock area by using a unmanned aerial vehicle, which comprises a unmanned aerial vehicle body and a strong seismograph fastening assembly. The bottom of the unmanned aerial vehicle body is provided with a clamping fixing device. The strong seismograph fastening assembly comprises two clamping cylinder bodies, and the gun barrels of four nail guns are vertically and oppositely arranged on the plane bottom plate. The unmanned aerial vehicle can realize accurate hoisting, positioning and rock surface fixing of the strong seismograph, improves the arrangement efficiency and safety, and guarantees the fixing stability.

Description

Technical Field

[0001] This invention relates to an installation device for deploying strong seismometers in hard rock areas using unmanned aerial vehicles (UAVs). Background Technology

[0002] Strong-motion seismographs need to be deployed in seismically active areas to accurately collect seismic data. These areas are often accompanied by hard rock formations (such as granite and basalt strata) and complex terrain such as steep slopes and cliffs. Traditional deployment methods rely on manual climbing to the designated location with the equipment, which has the following core problems: 1. Poor safety: When moving in steep, hard rock areas, there is a high risk of falls and collisions, especially since there are no stable gripping points on the rock surface, making the risk factor extremely high; 2. Low efficiency: A single person can only complete the deployment of 1-2 strong-motion seismographs per day, and they need to carry heavy equipment (strong-motion seismograph + securing tools), which takes a long time to travel back and forth. 3. Unstable fixation effect: When working at heights, it is difficult to apply stable pressure to hard rock surfaces, resulting in unstable nail fixation. The strong seismometer is easily affected by environmental vibrations, leading to a decrease in data acquisition accuracy.

[0003] Existing drone technology is mostly used only for equipment transportation and has not been combined with the strong seismometer's fixing function, so it cannot solve the "last mile" fixing problem. Therefore, there is an urgent need for a device that can achieve "lifting-positioning-fixing" in one integrated way through drones. Summary of the Invention

[0004] To address the aforementioned technical shortcomings, this invention provides an installation device for deploying strong seismometers in hard rock areas using drones. This device enables precise hoisting, positioning, and rock surface fixation of the strong seismometers by drones, improving deployment efficiency and safety, and ensuring stability.

[0005] This invention is achieved through the following measures: An installation device for deploying strong-motion seismometers in hard rock areas using a drone includes a drone body and a strong-motion seismometer fastening assembly. The drone body has a clamping and fixing device at its bottom, comprising a square main frame and two symmetrical clamping arms. The tops of the two clamping arms are located within the main frame and rotatably connected to the bottom of the drone body. The lower ends of the two clamping arms extend diagonally downwards and are equipped with hooks. A sliding groove is formed in the middle of the clamping arms. A supporting vertical rod is fixedly connected between the top of the main frame and the bottom of the drone body. Cylindrical nail guns with trigger switches are vertically installed at the bottom of each of the four corners of the main frame. A central vertical shaft runs vertically through the center of the main frame. An electromagnet is installed at the top of the central vertical shaft and fixedly connected to the bottom of the drone body. The electromagnet is electrically connected to a battery through a closed circuit with a remote control switch. A metal disc, which can be attracted by an electromagnet, is movably inserted through the center of the vertical shaft. A return spring is fitted on the central vertical shaft between the metal disc and the electromagnet. A square sub-frame is connected to the outer perimeter of the metal disc. Lower connecting rods are connected to the four corners of the sub-frame. The bottom of each lower connecting rod is connected to a collar that slides on the nail gun and activates the trigger switch when the gun moves upward along the nail gun. A sleeve is slidably fitted on the central vertical shaft below the metal disc. Horizontal connecting rods are connected to the left and right sides of the sleeve. The ends of each horizontal connecting rod are connected to sliding rods that slide into grooves on the clamping arms. At the end of the sleeve's upward stroke along the central vertical shaft, the sliding rods slide upward along the grooves to the upper limit position, and the horizontal connecting rods push the hooks of the two clamping arms to open. At the end of the sleeve's downward stroke along the central vertical shaft, the sliding rods slide downward along the grooves to the lower limit position, and the horizontal connecting rods pull the hooks of the two clamping arms to close. The strong vibration meter fastening assembly includes two arc-shaped clamping cylinders that symmetrically clamp the strong vibration meter. The two clamping cylinders are fitted with clamps on their outer sides. Flat base plates extend outward from the bottom of the clamping cylinders. Hook rings that can be hooked by hooks are provided above the two flat base plates. The nozzles of four nail guns are vertically facing the flat base plates.

[0006] The upper side wall of the sleeve is provided with an elongated notch. At the end of the upward sliding stroke of the sleeve, a protruding spring buckle that can be inserted into the notch is provided on the central vertical axis. A limiting ring is provided on the central vertical axis above the spring buckle. The diameter of the limiting ring is larger than the diameter of the sleeve. A spring is sleeved on the central vertical axis between the limiting ring and the top of the sleeve.

[0007] A cylindrical dustproof cover is sandwiched between the two clamping cylinders, covering the strong-motion seismometer, and a flat base plate is pressed against the base of the strong-motion seismometer.

[0008] A micro switch is installed in the central vertical shaft below the aforementioned spring clip. The micro switch is connected in series in the closed circuit of the electromagnet. When the sleeve slides upward to the end of its stroke and presses down on the spring clip, it triggers the micro switch to close.

[0009] The hook and loop described above are vertical triangles that are narrower at the top and wider at the bottom.

[0010] The beneficial effects of this invention are: 1. Significantly improved safety: No manual entry into steep, hard rock areas is required throughout the process, completely eliminating the risk of manual climbing. Operators only need to control the operation from the ground, increasing the safety factor by 100%; 2. Doubled deployment efficiency: The deployment time for a single device is reduced to 15 minutes, and a single person can complete the deployment of 8-10 devices per day, increasing efficiency by 5-8 times compared to traditional manual methods; 3. Strong stability: The nails are symmetrically distributed around the center of gravity of the strong-motion seismograph, and the special nails are adapted to hard rock areas, with a pull-out force ≥500N, which can withstand gale-force winds of level 8 and daily vibrations, ensuring long-term stable operation of the strong-motion seismograph; 4. High versatility: The load-bearing unit is compatible with mainstream models of strong-motion seismographs on the market, with a wide range of applications. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the clamping arm. Figure 4 This is a schematic diagram of the fastening assembly of the strong-motion seismometer; Figure 5 A schematic diagram of the structure after the main frame and clamping arms are combined; Figure 6 A structural diagram of the main framework; Figure 7 A schematic diagram of the structure with the clamping arm in the open position; The components include: 1. Electromagnet, 2. Supporting vertical rod, 3. Lower connecting rod, 4. Main frame, 5. Hook, 6. Vibration meter, 7. Clamp, 8. Flat base plate, 9. Nail gun, 10. Collar, 11. Clamping arm, 12. Central vertical shaft, 13. Metal disc, 14. Clamping cylinder, 15. Secondary frame, 16. Trigger switch, 17. Horizontal connecting rod, 18. Sleeve, 19. Slide groove, 20. Spring buckle, 21. Dustproof protective cover. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to the accompanying drawings: like Figure 1-7 As shown, an installation device for deploying a strong seismograph 6 in a hard rock area using a drone is described. This device consists of a drone body, a fastening assembly for the strong seismograph 6, and a clamping and fixing device. The specific structure is as follows: A multi-rotor heavy-duty drone (payload ≥ 5kg) is selected, with a modular installation interface reserved on the bottom of the fuselage for fixing clamping devices; the fuselage has a built-in extended battery (endurance ≥ 40 minutes) to meet the operational needs in complex terrain. The drone is equipped with an RTK high-precision positioning device (positioning accuracy ≤ 1cm), a high-definition visual camera (with zoom function), and a laser rangefinder (measurement range 0.5-50m, accuracy ±2mm); the RTK positioning device locks the preset coordinates of the strong seismometer 6, the laser rangefinder measures the distance between the clamping arm 11 and the rock surface in real time, and the high-definition camera assists the ground operator in observing the flatness of the rock surface to ensure that the fastening components of the strong seismometer 6 are stably attached to the rock surface.

[0013] The bottom of the drone body is equipped with a clamping and fixing device, which includes a square main frame 4 and two symmetrical clamping arms 11. The tops of the two clamping arms 11 are located inside the main frame 4 and are rotatably connected to the bottom of the drone body. The lower ends of the two clamping arms 11 extend diagonally downward and are provided with hooks. A sliding groove 19 is opened in the middle of the clamping arms 11. A supporting vertical rod 2 is fixedly connected between the top of the main frame 4 and the bottom of the drone body. A cylindrical nail gun 9 with a trigger switch 16 is vertically installed below the bottom of each of the four corners of the main frame 4. A central vertical shaft 12 runs vertically through the center of the main frame 4. An electromagnet 1 is installed at the top of the central vertical shaft 12 and is fixedly connected to the bottom of the drone body. The electromagnet 1 is electrically connected to a battery through a closed circuit with a remote control switch. A metal disk 13, which can be attracted by an electromagnet 1, is movably passed through the center of the vertical shaft 12. A return spring is fitted on the central vertical shaft 12 between the metal disk 13 and the electromagnet 1. A square sub-frame 15 is connected to the periphery of the metal disk 13. Lower connecting rods 3 are connected to the lower corners of the sub-frame 15. A collar 10 is connected to the bottom of the lower connecting rod 3, which slides on the nail gun 9 and presses to activate the trigger switch 16 during the upward movement along the nail gun 9. A sleeve 1 is slidably fitted on the central vertical shaft 12 below the metal disk 13. 8. Both sides of the sleeve 18 are connected to horizontal connecting rods 17. The ends of the horizontal connecting rods 17 are connected to sliding rods that slide into the sliding grooves 19 on the clamping arms 11. At the end of the stroke of the sleeve 18 sliding upward along the central vertical axis 12, the sliding rod slides upward along the sliding groove 19 to the upper limit position and the horizontal connecting rods 17 push the hooks of the two clamping arms 11 to open. At the end of the stroke of the sleeve 18 sliding downward along the central vertical axis 12, the sliding rod slides downward along the sliding groove 19 to the lower limit position and the horizontal connecting rods 17 pull the hooks of the two clamping arms 11 to close. The fastening assembly of the strong vibration meter 6 includes two arc-shaped clamping cylinders 14 that clamp the strong vibration meter 6 symmetrically. The two clamping cylinders 14 are fitted with clamps 7 on the outside. The bottom of the clamping cylinders 14 extends outward with flat base plates 8. The two flat base plates 8 are provided with hook rings 5 ​​that can be hooked by hooks. The nozzles of the four nail guns 9 are vertically facing the flat base plates 8.

[0014] The main body of the nail gun 9 is adapted to use special nails for hard rock areas (5mm in diameter, 30mm in length, made of high-strength alloy steel). The nail magazine has a capacity of 4 nails and is snapped together with the main body of the nail gun 9 for easy replenishment. When the strong vibration meter 6 is confirmed to be in contact with the rock surface, the electromagnet 1 is activated. The electromagnet 1 attracts the metal disc 13 to move upward, which drives the sub-frame 15 to move upward. Then the collar 10 moves upward and presses the trigger switch 16, thereby starting the nail gun 9. The four nail guns 9 shoot nails out at the same time. The nails penetrate the four corners of the flat base plate 8 and drive into the hard rock surface to complete the fixation.

[0015] A long, narrow notch is provided on the upper side wall of the sleeve 18. A protruding spring clip 20, which can be inserted into the notch, is provided on the central vertical shaft 12 at the end of the upward sliding stroke of the sleeve 18. A limiting ring is provided on the central vertical shaft 12 above the spring clip 20. The diameter of the limiting ring is larger than the diameter of the sleeve 18. A spring is fitted on the central vertical shaft 12 between the limiting ring and the top of the sleeve 18. A cylindrical dustproof cover 21, covering the strong vibration meter 6, is clamped between the two clamping cylinders 14. The flat base plate 8 is pressed against the base of the strong vibration meter 6. A micro switch is provided inside the central vertical shaft 12 below the spring clip 20. The micro switch is connected in series in the closed circuit of the electromagnet 1. When the sleeve 18 slides upward to the end of its stroke and presses down on the spring clip 20, it triggers the micro switch to close. The hook 5 is a vertical triangle, narrow at the top and wide at the bottom.

[0016] The work process is as follows: 1. Preliminary Preparation: Preset the coordinates of the strong seismograph 6 and input them into the UAV positioning module; load four hard rock-specific nails into the magazine of the nail gun 9; clamp the bottom of the strong seismograph 6 with two clamping cylinders 14, then attach the dust cover 21 above the strong seismograph 6, inserting the bottom edge of the dust cover 21 into the inside of the clamping cylinders 14 and securing it with clamps 7; press the flat base plate 8 firmly onto the bottom support plate of the strong seismograph 6. Then hook the hook of the clamping arm 11 onto the hook ring 5.

[0017] 2. UAV Takeoff and Positioning: The operator starts the UAV in a safe area and controls it to fly to the preset coordinates (10m above the rock surface); turns on the RTK positioning device and laser rangefinder, adjusts the UAV attitude, and aligns the strong vibration meter 6 fastening components with the target point on the rock surface. The operator observes the flatness of the rock surface through a high-definition camera to ensure that there are no obvious protrusions or cracks.

[0018] 3. Lowering and Attaching the Vibration Meter 6: The drone descends smoothly under the control of the ground remote controller. The bottom of the vibration meter 6 first contacts the rock surface, and then the drone continues to descend. At this time, the dust cover 21 pushes against the sleeve 18 and slides upward along the central screw. During the upward sliding of the sleeve 18, it drives the two horizontal connecting rods 17 to rise, thereby causing the slide bar to slide upward along the slide groove 19 to the upper limit position. The horizontal connecting rods 17 push the hooks of the two clamping arms 11 to open, completing the disengagement of the hooks from the hook ring 5. When the sleeve 18 slides upward to the top, the spring clip 20 engages with the notch, thereby locking the sleeve 18 and preventing it from sliding down. This keeps the clamping arms 11 in an open state, allowing the drone to take off again without any obstacles.

[0019] 4. Nail fixing: When the spring clip 20 is inserted into the notch, the spring clip 20 presses down the micro switch, energizing the electromagnet 1. The electromagnet 1 attracts the metal disc 13 to rise, which in turn drives the sub-frame 15, the four lower connecting rods 3 and the four collars 10 to rise simultaneously. When the collars 10 rise, the trigger switch 16 is pressed, thereby activating the nail gun 9. The four nail guns 9 simultaneously shoot nails. After the nails penetrate the four corners of the flat bottom plate 8, they are driven into the hard rock surface, completing the fixing.

[0020] 5. Device recovery and inspection: When it is necessary to recover the strong seismic instrument 6, first use a drone to carry strong acid to the location of the nail, spray the strong acid on the nail, and after corroding the nail, let the drone use the hook to hook the hook ring 5 and lift it away.

[0021] The above description is only a preferred embodiment of this patent. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this patent, and these improvements and substitutions should also be considered within the scope of protection of this patent.

Claims

1. An installation device for deploying strong seismometers in hard rock areas using unmanned aerial vehicles (UAVs), characterized in that: The device includes a drone body and a strong vibration meter fastening assembly. The drone body has a clamping and fixing device at its bottom, comprising a square main frame and two symmetrical clamping arms. The tops of the two clamping arms are located within the main frame and rotatably connected to the bottom of the drone body. The lower ends of the two clamping arms extend diagonally downwards and are equipped with hooks. A sliding groove is formed in the middle of the clamping arms. A supporting vertical rod is fixedly connected between the top of the main frame and the bottom of the drone body. Cylindrical nail guns with trigger switches are vertically installed below the bottom of each of the four corners of the main frame. A central vertical shaft runs vertically through the center of the main frame. An electromagnet is installed at the top of the central vertical shaft and fixedly connected to the bottom of the drone body. The electromagnet is electrically connected to a battery through a closed circuit with a remote control switch. A metal disk, which can be attracted by an electromagnet, moves through the center of a vertical axis. A return spring is fitted on the central vertical axis between the metal disk and the electromagnet. A square sub-frame is connected to the outer perimeter of the metal disk. Lower connecting rods are connected to the four corners of the sub-frame. A collar, which slides on the nail gun and activates the trigger switch as it moves upwards along the nail gun, is connected to the bottom of each lower connecting rod. A sleeve slides on the central vertical axis below the metal disk. Horizontal connecting rods are connected to the left and right sides of the sleeve. The ends of each horizontal connecting rod are connected to sliding rods that slide into grooves on the clamping arm. The sleeve moves along the central vertical axis... At the end of the upward sliding stroke, the slide bar slides upward along the slide groove to the upper limit position and the horizontal connecting rod pushes the hooks of the two clamping arms to open; at the end of the downward sliding stroke of the sleeve along the central vertical axis, the slide bar slides downward along the slide groove to the lower limit position and the horizontal connecting rod pulls the hooks of the two clamping arms to close; the strong vibration meter fastening assembly includes two arc-shaped clamping cylinders that clamp the strong vibration meter symmetrically on the left and right, the two clamping cylinders are fitted with clamps on the outside, and flat bottom plates extend outward from the bottom of the clamping cylinders respectively. Hook rings that can be hooked by hooks are provided above the two flat bottom plates, and the nozzles of four nail guns are vertically facing the flat bottom plates.

2. The installation device for deploying strong seismometers in hard rock areas using unmanned aerial vehicles as described in claim 1, characterized in that: The upper side wall of the sleeve is provided with an elongated notch. At the end of the upward sliding stroke of the sleeve, a protruding spring buckle that can be inserted into the notch is provided on the central vertical axis. A limiting ring is provided on the central vertical axis above the spring buckle. The diameter of the limiting ring is larger than the diameter of the sleeve. A spring is sleeved on the central vertical axis between the limiting ring and the top of the sleeve.

3. The installation device for deploying strong seismometers in hard rock areas using unmanned aerial vehicles (UAVs) according to claim 1, characterized in that: A cylindrical dustproof cover is sandwiched between the two clamping cylinders, covering the strong-motion seismometer, and a flat base plate is pressed against the base of the strong-motion seismometer.

4. The installation device for deploying strong seismometers in hard rock areas using unmanned aerial vehicles as described in claim 2, characterized in that: A micro switch is installed in the central vertical shaft below the spring clip. The micro switch is connected in series in the closed circuit of the electromagnet. When the sleeve slides upward to the end of its stroke and presses down on the spring clip, it triggers the micro switch to close.

5. The installation device for deploying strong seismometers in hard rock areas using unmanned aerial vehicles as described in claim 1, characterized in that: The hook is a vertical triangle that is narrow at the top and wide at the bottom.

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