Maintenance device for unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicle maintenance, in particular to a maintenance device for an unmanned aerial vehicle, which comprises a vehicle body and a plurality of fixing boxes, the fixing boxes are fixedly connected to four corners of the vehicle body respectively, adjusting mechanisms are arranged in the fixing boxes, and each adjusting mechanism comprises a sliding rod, a sliding block, a limiting rod, a friction block and a first air bag. The friction block, the temperature sensing cavity and the sliding block are arranged in the fixed box, the sliding rod is fixedly connected to the inner side wall of the fixed box, and the sliding block is connected to the sliding rod in a sliding mode. The temperature rise caused by insufficient lubrication of the unmanned aerial vehicle enables gas in the temperature sensing cavity to expand to push the first air bag to enable the friction block to move, so that the sliding block is driven to move to pull the second air bag, gas is continuously injected into the oil storage tank, lubricating oil is automatically injected in time, manual maintenance by workers is not needed, and the use efficiency of the unmanned aerial vehicle is improved.

Description

Technical Field

[0001] This utility model relates to the field of drone maintenance technology, and in particular to a drone maintenance device. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and their own program control devices, or safely or intermittently operated autonomously by onboard computers. Currently, their applications in aerial photography, agriculture, plant protection, miniature selfies, rapid transportation, disaster relief, wildlife observation, and disaster relief have greatly expanded their uses.

[0003] Existing large industrial drones are used frequently. When the lubrication of the motor shaft and propeller shaft dries out, vibration, increased motor shaft temperature, and unstable power will occur. After flying a certain distance, maintenance is required, which requires opening the drone and adding lubricating oil, which is very troublesome and reduces the efficiency of industrial drones. In addition, the drone is noisy during operation, and the abnormal noise of slight insufficient lubrication in the early stage may not be detected by personnel in time, which can cause certain damage to the drone. Utility Model Content

[0004] The purpose of this utility model is to solve the following shortcomings in the existing technology. Existing large industrial drones are used frequently. When the lubrication of the motor shaft and propeller shaft dries out, vibration, motor shaft temperature rise, power instability and other factors will occur. After flying a certain distance, maintenance is required. The drone needs to be opened and lubricated, which is very troublesome and reduces the efficiency of industrial drone use. In addition, the noise is relatively large during operation. The abnormal noise of slight insufficient lubrication in the early stage cannot be detected by personnel in time, which will cause certain damage to the drone. Therefore, a maintenance device for drones is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A maintenance device for unmanned aerial vehicles (UAVs) includes a body and mounting boxes, with multiple mounting boxes respectively fixedly connected to the four corners of the body.

[0007] The fixing box is equipped with an adjustment mechanism, which includes a slide rod, a slider, a limiting rod, a friction block, and a first airbag. The slide rod is fixedly connected to the inner side wall of the fixing box, the slider is slidably connected to the slide rod, the two limiting rods are respectively slidably connected to both ends of the slider, the friction block is fixedly connected to the side wall of the limiting rod, and the first airbag is fixedly connected between the friction block and the slider.

[0008] Preferably, a motor is fixedly connected to the bottom wall of the fixed box, a drive shaft is fixedly connected to the output end of the motor, a blade is provided on the drive shaft, a partition is fixedly connected to the inner side wall of the fixed box, and the drive shaft is rotatably connected to the partition.

[0009] Preferably, a temperature sensing cavity is fixedly connected to the lower end face of the partition, and a conduit is fixedly connected between the temperature sensing cavity and the first airbag.

[0010] Preferably, an oil storage tank is fixedly connected to the upper end face of the partition, and an oil outlet ring is fixedly connected to the side wall of the oil storage tank, with multiple oil outlet holes opened on the oil outlet ring.

[0011] Preferably, a second airbag is fixedly connected between the slider and the fixed box, an air inlet pipe is fixedly connected to the second airbag, an air outlet pipe is fixedly connected between the second airbag and the oil storage tank, a vent pipe is fixedly connected to the side wall of the fixed box, and a one-way valve is provided in the air inlet pipe, the air outlet pipe and the vent pipe.

[0012] Preferably, a return spring is fixedly connected between the slider and the fixed box, and an adjustment spring is fixedly connected between the limiting rod and the slider.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the cooperation of friction blocks, temperature sensing chambers, sliders and other structures, when the drone needs maintenance due to insufficient lubrication, the temperature rise caused by insufficient lubrication causes the gas inside the temperature sensing chamber to expand, pushing the first airbag to move the friction block, which in turn drives the slider to move the second airbag, continuously injecting gas into the oil tank, and automatically adding lubricating oil in a timely manner. This eliminates the need for manual maintenance by staff and improves the efficiency of drone use.

[0015] 2. Through the cooperation of the second airbag, slider and other structures, the second airbag is continuously squeezed when the lubricating oil is automatically extracted. Outside air enters the partition and fixed box through the vent pipe, which accelerates the internal gas circulation, cools the inside quickly, eliminates the high temperature state of the motor and inside caused by insufficient lubrication, and avoids damage to the drone. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the fixing box structure of a maintenance device for unmanned aerial vehicles (UAVs) proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the temperature sensing cavity structure of a maintenance device for unmanned aerial vehicles (UAVs) proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the oil storage tank structure of a maintenance device for unmanned aerial vehicles (UAVs) proposed in this utility model.

[0019] Figure 4 for Figure 3 A magnified view of part A in the image.

[0020] In the diagram: 1. Body, 2. Fixing box, 3. Slide rod, 4. Slider, 5. Limiting rod, 6. Friction block, 7. First airbag, 8. Motor, 9. Drive shaft, 10. Partition, 11. Temperature sensing chamber, 12. Conduit, 13. Oil tank, 14. Oil outlet ring, 15. Second airbag, 16. Air inlet pipe, 17. Air outlet pipe, 18. Vent pipe, 19. Return spring, 20. Adjusting spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] The terms used in this utility model, such as "upper", "lower", "left", "right", "middle" and "one", are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0023] Reference Figures 1-4 A maintenance device for unmanned aerial vehicles (UAVs) includes a body 1 and a mounting box 2. Multiple mounting boxes 2 are fixedly connected to the four corners of the body 1. An adjustment mechanism is provided inside the mounting box 2. The adjustment mechanism includes a slide rod 3, a slider 4, a limit rod 5, a friction block 6, and a first airbag 7. The slide rod 3 is fixedly connected to the inner side wall of the mounting box 2. The slider 4 is slidably connected to the slide rod 3. A return spring 19 is fixedly connected between the slider 4 and the mounting box 2. Two limit rods 5 are slidably connected to the two ends of the slider 4. An adjustment spring 20 is fixedly connected between the limit rod 5 and the slider 4. The friction block 6 is fixedly connected to the side wall of the limit rod 5. The first airbag 7 is fixedly connected between the friction block 6 and the slider 4.

[0024] A motor 8 is fixedly connected to the bottom wall of the fixed box 2. A drive shaft 9 is fixedly connected to the output end of the motor 8. A blade is provided on the drive shaft 9. A partition 10 is fixedly connected to the inner side wall of the fixed box 2. The drive shaft 9 is rotatably connected to the partition 10. The friction block 6 has a small mass and the entire material is lightweight. Both the drive shaft 9 and the motor 8 are used in large drones, so the impact on the drive shaft 9 and the operation of the drone is minimal.

[0025] A temperature sensing cavity 11 is fixedly connected to the lower end face of the partition 10. The temperature sensing cavity 11 is filled with inert gas, which is sensitive to temperature changes and will expand rapidly when heated. A conduit 12 is fixedly connected between the temperature sensing cavity 11 and the first airbag 7.

[0026] An oil storage tank 13 is fixedly connected to the upper end face of the partition 10. The oil storage tank 13 stores lubricating oil. An oil outlet ring 14 is fixedly connected to the side wall of the oil storage tank 13. The oil outlet ring 14 has multiple oil outlet holes. The oil outlet ring 14 wraps around the drive shaft 9, but the oil outlet ring 14 does not contact the drive shaft 9. The oil outlet holes are small and it is difficult for the oil to leak out under its own weight. Only under a certain pressure will the oil be sprayed onto the drive shaft 9.

[0027] A second airbag 15 is fixedly connected between the slider 4 and the fixed box 2. An air inlet pipe 16 is fixedly connected to the second airbag 15. An air outlet pipe 17 is fixedly connected between the second airbag 15 and the oil storage tank 13. A vent pipe 18 is fixedly connected to the side wall of the fixed box 2. One-way valves are provided in the air inlet pipe 16, the air outlet pipe 17, and the vent pipe 18. The flow direction of the one-way valve in the air inlet pipe 16 is from the partition 10 and the fixed box 2 to the second airbag 15. The flow direction of the one-way valve in the air outlet pipe 17 is from the second airbag 15 to the oil storage tank 13.

[0028] In this invention, when the drone is in flight, the motor 8 drives the drive shaft 9 and the propeller blades. When the lubrication between the motor 8 shaft and the drive shaft 9 decreases, the temperature inside the partition 10 and the fixed box 2 will rise rapidly, and the drive shaft 9 will also vibrate. The inert gas in the temperature sensing chamber 11 will expand due to the heat, and the gas will enter the first airbag 7 through the conduit 12. The expansion of the first airbag 7 pushes the friction block 6 and the slide rod 3 towards the drive shaft 9 and stretches the adjusting spring 20. The friction block 6 contacts the drive shaft 9, and the rotation of the drive shaft 9 drives the friction block 6 to move in the rotational direction. Slider 4 moves along slide bar 3, compressing the second airbag 15 and return spring 19. The one-way valve in air inlet pipe 16 closes, and the one-way valve in air outlet pipe 17 opens. The gas in the second airbag 15 enters the oil tank 13 through air outlet pipe 17, increasing the pressure in oil tank 13. Under the pressure, the lubricating oil in oil tank 13 is sprayed out through the oil outlet hole in oil outlet ring 14 onto drive shaft 9. The lubricating oil slides down drive shaft 9 under gravity and vibration, automatically lubricating without the need for manual maintenance, saving time and effort and improving the efficiency of drone use.

[0029] After the friction block 6 rotates forward a certain distance and disengages from the drive shaft 9, it resets under the elastic force of the return spring 19, stretching the second airbag 15. The one-way valve in the air inlet pipe 16 opens, and the one-way valve in the air outlet pipe 17 closes. The gas between the partition 10 and the fixed box 2 enters the second airbag 15 through the air inlet pipe 16, creating a negative pressure in the partition 10 and the fixed box 2. The one-way valve in the vent pipe 18 opens, and outside air enters the partition 10 and the fixed box 2 through the vent pipe 18, accelerating the internal gas flow and rapidly cooling the interior, eliminating the high temperature state of the motor 8 and its interior. After the temperature drops, the temperature inside the temperature sensing chamber 11 decreases, and the gas in the first airbag 7 returns to the temperature sensing chamber 11 through the conduit 12. Under the elastic force of the adjusting spring 20, the friction block 6 and the limit rod 5 reset, and the friction block 6 no longer contacts the drive shaft 9, avoiding prolonged contact with the drive shaft 9 and preventing its impact.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A maintenance device for unmanned aerial vehicles, comprising a body (1) and a fixing box (2), characterized in that, A plurality of said fixed box (2) is fixedly connected at the four corners of the machine body (1) respectively; The adjusting mechanism is arranged in the fixed box (2), and the adjusting mechanism comprises a sliding rod (3), a sliding block (4), a limiting rod (5), a friction block (6) and a first air bag (7). The sliding rod (3) is fixedly connected to the inner side wall of the fixed box (2). The sliding block (4) is slidably connected to the sliding rod (3). Two limiting rods (5) are slidably connected to the two ends of the sliding block (4). The friction block (6) is fixedly connected to the side wall of the limiting rod (5). The first air bag (7) is fixedly connected between the friction block (6) and the sliding block (4).

2. The maintenance device for a UAV according to claim 1, characterized in that A motor (8) is fixedly connected to the bottom wall of the fixed box (2). An output end of the motor (8) is fixedly connected with a driving shaft (9). The driving shaft (9) is provided with a paddle. A partition plate (10) is fixedly connected to the inner side wall of the fixed box (2). The driving shaft (9) is rotatably connected to the partition plate (10).

3. The maintenance device for a UAV according to claim 2, wherein A temperature sensing cavity (11) is fixedly connected to the lower end surface of the partition plate (10). The temperature sensing cavity (11) is fixedly and communicatively connected between the first air bag (7).

4. The maintenance device for a UAV according to claim 2, wherein An oil storage tank (13) is fixedly connected to the upper end surface of the partition plate (10). An oil outlet ring (14) is fixedly and communicatively connected to the side wall of the oil storage tank (13). A plurality of oil outlet holes are formed in the oil outlet ring (14).

5. The maintenance device for a UAV according to claim 4, wherein A second air bag (15) is fixedly connected between the sliding block (4) and the fixed box (2). An air inlet pipe (16) is fixedly and communicatively connected to the second air bag (15). An air outlet pipe (17) is fixedly and communicatively connected between the second air bag (15) and the oil storage tank (13). An air pipe (18) is fixedly and communicatively connected to the side wall of the fixed box (2). Unidirectional valves are arranged in the air inlet pipe (16), the air outlet pipe (17) and the air pipe (18).

6. The maintenance device for a UAV of claim 1, wherein, A reset spring (19) is fixedly connected between the sliding block (4) and the fixed box (2). An adjusting spring (20) is fixedly connected between the limiting rod (5) and the sliding block (4).

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