Hydrogen energy unmanned aerial vehicle nest outdoor inspection energy complementing platform

Abstract

The invention discloses a hydrogen energy unmanned aerial vehicle nest outdoor inspection energy complementing platform, and mainly relates to unmanned aerial vehicle nest energy complementing. Comprising a nest body, a lifting platform is installed on the upper surface of the nest body, a closing plate is installed in the nest body, adjusting rods are installed on the two sides of the two ends of the nest body, a shell is installed at the ends, away from the nest body, of the adjusting rods, and a hydrogen tank is arranged in the nest body; an unmanned aerial vehicle body is placed on the upper surface of the lifting platform, supplementing structures are arranged on the two sides of the unmanned aerial vehicle body, each supplementing structure comprises two connecting pipes, and the two connecting pipes are both fixedly connected with the unmanned aerial vehicle body. The device has the beneficial effects that hydrogen energy can be automatically supplemented to the unmanned aerial vehicle conveniently and can be recycled, the device can be prevented from being used on a nest in different environments, and the energy supplementing efficiency of the unmanned aerial vehicle is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of drone nest refueling technology, and in particular to an outdoor inspection and refueling platform for hydrogen-powered drone nests. Background Technology

[0002] A drone storage facility is a system that provides automatic charging, energy replenishment, maintenance, and management for drones. It is typically designed as a closed or semi-closed structure for storing, charging, and maintaining and preparing drones after their flight missions.

[0003] Existing technologies, such as the invention with publication number CN111392054B, disclose a drone nest. This patent employs a nest body, guide rails, two hatches, a drive device, a landing platform, and a lifting device. The nest body has a nest opening at the top; the guide rails are located at the nest opening; the two hatches are movably connected to the guide rails and slide relative to each other along the guide rails to open or close the nest opening. The bottom of the hatches and the edge of the nest opening form air vents; the landing platform is located inside the nest; and the lifting device is located inside the nest and drives the landing platform to rise to the nest opening. This invention's drone nest, by designing the hatches on both sides of the drone take-off and landing platform to form an air duct structure, can reduce ground effect during take-off and landing, avoid unpredictable changes in the drone, and ensure the safety of the drone itself and surrounding personnel during landing.

[0004] The inventors discovered significant shortcomings in existing drone refueling systems for hydrogen refueling during daily use. Current refueling still relies heavily on manual operation, making a rapid and automated process difficult. After a drone enters the refueling station, manual intervention is typically required, reducing charging efficiency and increasing the workload of operators. Furthermore, existing refueling systems lack intelligent control over the hydrogen refueling process, hindering automated refueling and resulting in insufficient timeliness and flexibility.

[0005] This application provides another technical solution to this technical problem, aiming to provide those skilled in the art with multiple options for solving the problem. Summary of the Invention

[0006] The purpose of this invention is to solve the problem in the prior art that it is difficult for drone nests to automatically replenish the hydrogen energy of drones, and to propose an outdoor inspection and refueling platform for hydrogen-powered drone nests.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an outdoor inspection and refueling platform for hydrogen-powered drone nests, comprising a nest body, a take-off and landing platform mounted on the upper surface of the nest body, a closing plate installed inside the nest body, adjusting rods mounted on both sides of the nest body, an outer shell mounted on the end of the adjusting rods away from the nest body, a hydrogen tank disposed inside the nest body, a drone body placed on the upper surface of the lifting platform, and refueling structures provided on both sides of the drone body.

[0008] Preferably, the supplementary structure includes two connecting pipes, both of which are fixedly connected to the UAV body. A baffle is fixedly connected to the end of each connecting pipe away from the UAV body. Two inflation pipes are installed inside the take-off and landing platform and the UAV housing body. A vent pipe is fixedly connected to the lower end of each inflation pipe. An electronic control valve is installed at the end of each vent pipe away from the inflation pipe. A signal receiving module is installed on the upper surface of the electronic control valve. A sensing ring is fixedly connected to the arc surface of the vent valve. An elastic ring is fixedly connected to the inner wall of the baffle. Two connecting pipes are installed on the arc surface of the hydrogen tank. The connecting pipes are installed on the electronic control valve.

[0009] The aforementioned components achieve the following effect: When hydrogen refueling is required, the drone descends and aligns the shield with the vent pipe. The vent pipe then enters the shield. The elastic ring increases the friction and sealing between the vent pipe and the shield. After moving to the appropriate position, the insertion tube is inserted into the vent pipe for connection. The elastic ring then touches the sensing ring, which transmits a signal to the signal receiving module. Upon receiving the signal, the signal receiving module drives the electronic control valve to release gas, thereby completing the hydrogen refueling of the drone.

[0010] Preferably, a sealing sleeve is fixedly connected to the inner wall of the upper end of the baffle, and the sealing sleeve has a circular cross-section.

[0011] The effect achieved by the above components is that the sealing sleeve can increase the sealing between the vent pipe and the connecting pipe, and prevent gas leakage during hydrogen filling.

[0012] Preferably, the inner wall of the vent pipe has two positioning grooves, and the arc surface of the insertion tube is fixedly connected to two positioning rods, which are slidably connected to the positioning grooves.

[0013] The effect achieved by the above components is that when the insertion tube and the ventilation tube are connected, the positioning rod slides on the inner wall of the positioning groove to prevent the positioning rod from shifting during use and causing misalignment.

[0014] Preferably, the inner walls on both sides of the nest body are provided with stabilizing structures. The stabilizing structure includes a fixing plate, which is fixedly connected to the nest body. Several mounting plates are slidably connected to the inner wall of the fixing plate. A stabilizing ring is fixedly connected to the end of the mounting plate away from the fixing plate. The vent pipe is disposed between the stabilizing ring and the fixing plate. A filling block is disposed between the stabilizing ring and the fixing plate. The filling block is in contact with the vent pipe. Several insert rods are slidably connected to the inner wall of the fixing plate. The insert rods are slidably connected to the mounting plates. Damping is provided between the insert rods and the fixing plate.

[0015] The effect achieved by the above components is as follows: when it is necessary to stabilize the vent pipe, pull the stabilizer to move it, the stabilizer ring drives the mounting plate to move, then put the stabilizer ring on the vent pipe and insert it into the fixing plate. After moving to the appropriate position, pull the connecting plate to move it, the connecting plate drives the insertion rod to move, insert the insertion rod into the mounting plate and the fixing plate for fixation, and then insert the filler block to fit and stabilize it.

[0016] Preferably, a protective pad is fixedly connected to the inner wall of the stabilizing ring, and the cross-section of the protective pad is arc-shaped.

[0017] The effect achieved by the above components is that the protective pad can stabilize the vent pipe and prevent the stabilizing ring from causing excessive wear when stabilizing the vent pipe.

[0018] Preferably, the mounting plate has a plurality of slots on the side away from the filler block, and the plurality of slots are evenly distributed on the mounting plate.

[0019] The effect achieved by the above components is that the groove can increase the friction between the hand and the mounting plate, preventing slippage when the mounting plate is pulled.

[0020] Preferably, the bottom wall of the nest body is provided with a fixing structure, the fixing structure includes two slide rails, both of which are fixedly connected to the nest body. Two sliders are slidably connected to the inner wall of the slide rails. An auxiliary block is fixedly connected to the upper surface of the slider. A retaining ring is fixedly connected to the upper end of the auxiliary block. The retaining ring is in contact with the hydrogen tank. The two sliders near the closing plate are fixedly connected to an auxiliary plate. A screw is threadedly connected to the inner wall of the auxiliary plate. The screw abuts against the slide rail.

[0021] The effect achieved by the above components is as follows: when the hydrogen tank needs to be installed, the slider is pulled to move, the slider drives the connecting plate to move, and then the two sets of sliders slide on the inner walls of the two slide rails respectively. One set of sliders drives the auxiliary plate to move, the slider drives the auxiliary block to move, the auxiliary block drives the retaining ring to move, and after moving to the appropriate position, the retaining ring locks the hydrogen tank, and then the screw is turned to fix it.

[0022] Preferably, a limiting rod is fixedly connected inside the slide rail, and the limiting rod is slidably connected to the slider.

[0023] The effect achieved by the above components is that the limiting rod can limit the slider, preventing the slider from deviating when sliding on the inner wall of the slide rail, thus improving the stability of the slider sliding.

[0024] Preferably, the arc surface of the retaining ring is fixedly connected to an anti-slip pad, which is a rubber pad.

[0025] The effect achieved by the above components is that the anti-slip pad can increase the friction between the retaining ring and the hydrogen tank, preventing the retaining ring from sliding when fixing the hydrogen tank.

[0026] In summary, the beneficial effects of the present invention are as follows: In this invention, by manipulating the replenishment structure, it is possible to conveniently and automatically replenish hydrogen energy for drones, and to recycle the energy, avoiding the need for drones to be used in different environments on their nests, thus greatly improving the efficiency of drone energy replenishment.

[0027] In this invention, by operating the stabilizing structure, the air pipe can be easily stabilized, avoiding the pipe from shaking or impacting the nest wall and causing wear during use due to its length, thus greatly improving the safety of UAV recharging.

[0028] In this invention, by manipulating the fixed structure, the hydrogen tank can be easily and quickly replaced, avoiding the need for timely replenishment due to different hydrogen energy sources during special operations, thus greatly improving the drone's cruising capability. Attached Figure Description

[0029] Appendix Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Appendix Figure 2 This is the present invention. Figure 1 A schematic diagram of the structure of the part; Appendix Figure 3 This is a supplementary structural diagram of the present invention; Appendix Figure 4 This is the present invention. Figure 3 Enlarged view of point A; Appendix Figure 5 This is the present invention. Figure 3 Partial structural diagram; Appendix Figure 6 This is the present invention. Figure 5 Enlarged view of point B; Appendix Figure 7 This is a schematic diagram of the stable structure of the present invention; Appendix Figure 8 This is the present invention. Figure 7Enlarged view of point C; Appendix Figure 9 This is a schematic diagram of the fixed structure of the present invention.

[0030] The following are the labels in the attached diagram: 1. Closure plate; 2. Outer shell; 3. Adjusting rod; 4. UAV body; 5. Nest body; 6. Take-off and landing platform; 7. Supplementary structure; 701. Connecting pipe; 702. Baffle; 703. Inflation pipe; 704. Connecting pipe; 705. Electronic control valve; 706. Signal receiving module; 707. Vent pipe; 708. Insertion tube; 709. Sensing ring; 710. Elastic ring; 711. Positioning rod; 71 2. Sealing ring; 713. Positioning groove; 8. Stabilizing structure; 81. Fixing plate; 82. Connecting plate; 83. Mounting plate; 84. Groove; 85. Insert rod; 86. Filler block; 87. Protective pad; 88. Stabilizing ring; 9. Fixing structure; 91. Slide rail; 92. Snap ring; 93. Anti-slip pad; 94. Connecting plate; 95. Auxiliary block; 96. Limiting rod; 97. Slider; 98. Auxiliary plate; 99. Screw; 10. Hydrogen tank. Detailed Implementation

[0031] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0032] Reference Figure 1 As shown, the present invention provides a technical solution: an outdoor inspection and refueling platform for hydrogen-powered drone nests, including a nest body 5, a take-off and landing platform 6 installed on the upper surface of the nest body 5, a closing plate 1 installed inside the nest body 5, adjusting rods 3 installed on both sides of the nest body 5, a shell 2 installed on the end of the adjusting rods 3 away from the nest body 5, a hydrogen tank 10 installed inside the nest body 5, a drone body 4 placed on the upper surface of the lifting platform, a refueling structure 7 provided on both sides of the drone body 4, a stabilizing structure 8 provided on the inner walls of both sides of the nest body 5, and a fixing structure 9 provided on the bottom wall of the nest body 5.

[0033] The following section will explain the specific setup and function of its supplementary structure 7, stabilizing structure 8, and fixing structure 9.

[0034] Reference Figures 3 to 6As shown in this embodiment: Supplementary structure 7 includes two connecting pipes 701, both of which are fixedly connected to the UAV body 4. A baffle 702 is fixedly connected to the end of the connecting pipe 701 away from the UAV body 4. Two inflation pipes 703 are installed inside the take-off and landing platform 6 and the nest body 5. A vent pipe 707 is fixedly connected to the lower end of the inflation pipe 703. An electronic control valve 705 is installed at the end of the vent pipe 707 away from the inflation pipe 703. A signal receiving module 706 is installed on the upper surface of the electronic control valve 705. A sensing ring 709 is fixedly connected to the arc surface of the vent valve. An elastic ring 710 is fixedly connected to the inner wall of the baffle 702. Two connecting pipes 704 are installed on the arc surface of the hydrogen tank 10. The connecting pipes 704 are installed on the electronic control valve 705. When the drone needs to be refueled with hydrogen, the drone descends and aligns the shield 702 with the vent pipe 707. The vent pipe 707 then enters the shield 702. The elastic ring 710 increases the friction and sealing between the vent pipe 707 and the shield 702. After moving to the appropriate position, the insertion tube 708 is inserted into the vent pipe 707 for connection. Then, the elastic ring 710 touches the sensing ring 709, which transmits a signal to the signal receiving module 706. After receiving the signal, the signal receiving module 706 drives the electronic control valve 705 to operate and release gas, thereby completing the hydrogen refueling of the drone. A sealing sleeve is fixedly connected to the inner wall of the upper end of the shield 702. The cross-section of the sealing sleeve is circular. The sealing sleeve increases the seal between the vent pipe 707 and the connecting pipe 701, preventing gas leakage during hydrogen filling. Two positioning grooves 713 are formed on the inner wall of the vent pipe 707. Two positioning rods 711 are fixedly connected to the arc surface of the insertion tube 708, and the positioning rods 711 are slidably connected to the positioning grooves 713. When the insertion tube 708 is connected to the vent pipe 707, the positioning rods 711 slide within the inner wall of the positioning grooves 713, preventing misalignment during use.

[0035] Reference Figure 7 , 8As shown in this embodiment: the stabilizing structure 8 includes a fixed plate 81, which is fixedly connected to the machine nest body 5. Several mounting plates 83 are slidably connected to the inner wall of the fixed plate 81. A stabilizing ring 88 is fixedly connected to the end of the mounting plate 83 away from the fixed plate 81. A vent pipe 707 is disposed between the stabilizing ring 88 and the fixed plate 81. A filling block 86 is disposed between the stabilizing ring 88 and the fixed plate 81. The filling block 86 is in contact with the vent pipe 707. Several insert rods 85 are slidably connected to the inner wall of the fixed plate 81. The insert rods 85 are slidably connected to the mounting plates 83. Damping is provided between the insert rods 85 and the fixed plate 81. When stabilizing the vent pipe 707 is required, the stabilizing ring 88 is pulled to move it, causing the mounting plate 83 to move as well. The stabilizing ring 88 is then fitted onto the vent pipe 707 and inserted into the fixing plate 81. After moving to the appropriate position, the connecting plate 82 is pulled to move it, causing the insertion rod 85 to move. The insertion rod 85 is then inserted into the mounting plate 83 and fixing plate 81 for fixation. The filler block 86 is then inserted for secure fit. A protective pad 87 is fixedly connected to the inner wall of the stabilizing ring 88, and the protective pad 87 has an arc-shaped cross-section. The protective pad 87 stabilizes the vent pipe 707 and prevents excessive wear of the stabilizing ring 88 during stabilization. Several slots 84 are evenly distributed on the side of the mounting plate 83 away from the filler block 86. The slots 84 increase the friction between the hand and the mounting plate 83, preventing slippage when the mounting plate 83 is pulled.

[0036] Reference Figure 9As shown in this embodiment: the fixed structure 9 includes two slide rails 91, both slide rails 91 are fixedly connected to the machine nest body 5, two sliders 97 are slidably connected to the inner wall of the slide rail 91, an auxiliary block 95 is fixedly connected to the upper surface of the slider 97, a retaining ring 92 is fixedly connected to the upper end of the auxiliary block 95, the retaining ring 92 is in contact with the hydrogen tank 10, and the two sliders 97 near the closing plate 1 are fixedly connected to an auxiliary plate 98, a screw 99 is threadedly connected to the inner wall of the auxiliary plate 98, and the screw 99 abuts against the slide rail 91. When installing the hydrogen tank 10, the slider 97 is pulled to move, which in turn moves the connecting plate 94. Then, the two sets of sliders 97 slide along the inner walls of the two slide rails 91. One set of sliders 97 moves the auxiliary plate 98, which in turn moves the auxiliary block 95. The auxiliary block 95 then moves the retaining ring 92. After moving to the appropriate position, the retaining ring 92 locks the hydrogen tank 10 in place. The screw 99 is then tightened for fixation. A limit rod 96 is fixedly connected inside the slide rail 91, and the limit rod 96 is slidably connected to the slider 97. The limit rod 96 limits the slider 97, preventing it from shifting while sliding along the inner wall of the slide rail 91, thus improving the stability of the slider 97's movement. An anti-slip pad 93, made of rubber, is fixedly connected to the arc surface of the retaining ring 92. The anti-slip pad 93 increases the friction between the retaining ring 92 and the hydrogen tank 10, preventing the retaining ring 92 from slipping when fixing the hydrogen tank 10.

[0037] Detailed Instructions for Use: When the drone needs hydrogen refueling, the drone is lowered, and the shield 702 is aligned with the vent pipe 707. The vent pipe 707 is then inserted into the shield 702. The elastic ring 710 increases the friction and sealing between the vent pipe 707 and the shield 702. After moving to the appropriate position, the insertion tube 708 is inserted into the vent pipe 707 for connection. The elastic ring 710 then touches the sensing ring 709, which transmits a signal to the signal receiving module 706. Upon receiving the signal, the signal receiving module 706 drives the electronic control valve 705 to release gas, thus completing the hydrogen refueling of the drone. The sealing sleeve increases the sealing between the vent pipe 707 and the connecting pipe 701, preventing gas leakage during hydrogen filling. When the insertion tube 708 is connected to the vent pipe 707, the positioning rod 711 slides on the inner wall of the positioning groove 713 to prevent the positioning rod 711 from shifting during use and causing misalignment.

[0038] When stabilizing the vent pipe 707 is required, pull the stabilizing ring 88 to move it. The stabilizing ring 88 moves the mounting plate 83. Then, put the stabilizing ring 88 onto the vent pipe 707 and insert it into the fixing plate 81. After moving it to the appropriate position, pull the connecting plate 82 to move it. The connecting plate 82 moves the insertion rod 85. Insert the insertion rod 85 into the mounting plate 83 and the fixing plate 81 for fixation. Then, insert the filling block 86 for fit and stability. The protective pad 87 can stabilize the vent pipe 707 and prevent the stabilizing ring 88 from causing excessive wear when stabilizing the vent pipe 707. The groove 84 can increase the friction between the hand and the mounting plate 83 and prevent slippage when pulling the mounting plate 83.

[0039] When the hydrogen tank 10 needs to be installed, the slider 97 is pulled to move, and the slider 97 drives the connecting plate 94 to move. Then, the two sets of sliders 97 slide on the inner walls of the two slide rails 91 respectively. One set of sliders 97 drives the auxiliary plate 98 to move, and the slider 97 drives the auxiliary block 95 to move. The auxiliary block 95 drives the retaining ring 92 to move. After moving to the appropriate position, the retaining ring 92 locks the hydrogen tank 10. Then, the screw 99 is turned to fix it. The limiting rod 96 can limit the slider 97 to prevent the slider 97 from deviating when sliding on the inner wall of the slide rail 91, thus improving the stability of the slider 97 sliding. The anti-slip pad 93 can increase the friction between the retaining ring 92 and the hydrogen tank 10, preventing the retaining ring 92 from sliding when fixing the hydrogen tank 10.

Claims

1. An outdoor inspection and refueling platform for hydrogen-powered unmanned aerial vehicle (UAV) nests, comprising a nest body (5), characterized in that: The upper surface of the nest body (5) is equipped with a take-off and landing platform (6), the inside of the nest body (5) is equipped with a closing plate (1), both ends of the nest body (5) are equipped with adjusting rods (3), the end of the adjusting rod (3) away from the nest body (5) is equipped with a shell (2), the inside of the nest body (5) is equipped with a hydrogen tank (10), the upper surface of the lifting platform is equipped with a drone body (4), and the two sides of the drone body (4) are equipped with supplementary structures (7).

2. The hydrogen-powered unmanned aerial vehicle (UAV) nest outdoor inspection and refueling platform according to claim 1, characterized in that: The supplementary structure (7) includes two connecting pipes (701), both of which are fixedly connected to the UAV body (4). A baffle (702) is fixedly connected to the end of the connecting pipe (701) away from the UAV body (4). Two inflation pipes (703) are installed inside the take-off and landing platform (6) and the nest body (5). A ventilation pipe (707) is fixedly connected to the lower end of the inflation pipe (703). An electronic control valve (705) is installed at the end of the ventilation pipe (707) away from the inflation pipe (703). A signal receiving module (706) is installed on the upper surface of the electronic control valve (705). A sensing ring (709) is fixedly connected to the arc surface of the ventilation valve. An elastic ring (710) is fixedly connected to the inner wall of the baffle (702). Two connecting pipes (704) are installed on the arc surface of the hydrogen tank (10). The connecting pipes (704) are installed on the electronic control valve (705).

3. The hydrogen-powered unmanned aerial vehicle (UAV) nest outdoor inspection and refueling platform according to claim 1, characterized in that: A sealing sleeve is fixedly connected to the inner wall of the upper end of the cover (702), and the cross-section of the sealing sleeve is circular.

4. The hydrogen-powered unmanned aerial vehicle (UAV) nest outdoor inspection and refueling platform according to claim 1, characterized in that: The inner wall of the vent tube (707) has two positioning grooves (713), and the arc surface of the insertion tube (708) is fixedly connected to two positioning rods (711), and the positioning rods (711) are slidably connected to the positioning grooves (713).

5. The hydrogen-powered unmanned aerial vehicle (UAV) nest outdoor inspection and refueling platform according to claim 1, characterized in that: The inner walls on both sides of the nest body (5) are provided with stabilizing structures (8). The stabilizing structure (8) includes a fixing plate (81). The fixing plate (81) is fixedly connected to the nest body (5). Several mounting plates (83) are slidably connected to the inner wall of the fixing plate (81). A stabilizing ring (88) is fixedly connected to the end of the mounting plate (83) away from the fixing plate (81). The ventilation pipe (707) is arranged between the stabilizing ring (88) and the fixing plate (81). A filling block (86) is arranged between the stabilizing ring (88) and the fixing plate (81). The filling block (86) is in contact with the ventilation pipe (707). Several insert rods (85) are slidably connected to the inner wall of the fixing plate (81). The insert rods (85) are slidably connected to the mounting plate (83). Damping is provided between the insert rods (85) and the fixing plate (81).

6. The hydrogen-powered unmanned aerial vehicle (UAV) nest outdoor inspection and refueling platform according to claim 5, characterized in that: The inner wall of the stabilizing ring (88) is fixedly connected to a protective pad (87), and the cross section of the protective pad (87) is arc-shaped.

7. The hydrogen-powered unmanned aerial vehicle (UAV) nest outdoor inspection and refueling platform according to claim 5, characterized in that: The mounting plate (83) has a plurality of slots (84) on the side away from the filling block (86), and the plurality of slots (84) are evenly distributed on the mounting plate (83).

8. The hydrogen-powered unmanned aerial vehicle (UAV) nest outdoor inspection and refueling platform according to claim 5, characterized in that: The bottom wall of the nest body (5) is provided with a fixing structure (9). The fixing structure (9) includes two slide rails (91). Both slide rails (91) are fixedly connected to the nest body (5). The inner wall of the slide rails (91) is slidably connected to two sliders (97). The upper surface of the sliders (97) is fixedly connected to an auxiliary block (95). The upper end of the auxiliary block (95) is fixedly connected to a retaining ring (92). The retaining ring (92) is in contact with the hydrogen tank (10). The two sliders (97) near the closing plate (1) are fixedly connected to an auxiliary plate (98). The inner wall of the auxiliary plate (98) is threaded with a screw (99). The screw (99) abuts against the slide rail (91).

9. The hydrogen-powered unmanned aerial vehicle (UAV) nest outdoor inspection and refueling platform according to claim 8, characterized in that: The slide rail (91) is internally fixedly connected to a limiting rod (96), and the limiting rod (96) is slidably connected to the slider (97).

10. The hydrogen-powered unmanned aerial vehicle (UAV) nest outdoor inspection and refueling platform according to claim 8, characterized in that: The arc surface of the retaining ring (92) is fixedly connected to an anti-slip pad (93), which is a rubber pad.

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