Unmanned aerial vehicle for electric power inspection

Abstract

The utility model relates to an unmanned aerial vehicle for electric power inspection in the field of electric power inspection. The unmanned aerial vehicle comprises an unmanned aerial vehicle body and an inspection module carried below the unmanned aerial vehicle body, an automatic clamp is installed above the unmanned aerial vehicle body and comprises an upper clamping plate, a lower clamping plate, a connecting rod, a stress plate, an extension spring and a limiting piece, one side of the upper clamping plate is fixed to the upper end of a vehicle body of the unmanned aerial vehicle body through the connecting piece, a first containing groove is formed in the lower portion of the middle of the upper clamping plate, and the lower clamping plate and the upper clamping plate are arranged in a mirror image mode along the horizontal plane. By the adoption of the structure, automatic cable clamping and automatic cable loosening are achieved, so that the cable can be clamped without extra power, and the unmanned aerial vehicle body is suspended on the cable; the energy consumption of the unmanned aerial vehicle for power inspection can be further reduced during close-range observation, the single inspection travel of the unmanned aerial vehicle for power inspection is prolonged, and a better energy-saving effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of unmanned aerial vehicle for power inspection, in particular to a kind of unmanned aerial vehicle for power inspection applied to electric power inspection field. BACKGROUND

[0002] The unmanned aerial vehicle technology is applied to the electric power inspection field, but the flight time of unmanned aerial vehicle is limited, and the inspection distance is further shortened due to the hovering operation such as close observation during inspection.

[0003] According to the search, the specification of patent announcement No. CN209209031U discloses an unmanned aerial vehicle for power inspection, which includes an unmanned aerial vehicle body, a storage cavity is arranged in the unmanned aerial vehicle body, and a plurality of rotor flight devices are arranged on the side surface of the unmanned aerial vehicle body. An upper waterproof shell is arranged on the upper end of the unmanned aerial vehicle body, and a first waterproof sealing ring is arranged between the waterproof shell and the unmanned aerial vehicle body. An electronic element mounting cavity with an opening facing upward is arranged in the middle of the aluminum radiator in the storage cavity. The side surface of the waterproof shell is arc-shaped, the upper end surface of the waterproof shell is flat, an automatic cable grabbing manipulator is fixedly arranged on the upper end surface of the waterproof shell, and a thermal infrared imager, a camera, and an ultrasonic flaw detector are fixedly arranged in the waterproof shell.

[0004] Based on the above search, it is found that the existing technology similar to the above-mentioned power inspection unmanned aerial vehicle can be suspended on the cable for close-range hovering detection, thereby reducing power consumption and prolonging the endurance time of the unmanned aerial vehicle. However, the mechanical claw structure needs additional power to drive, and the energy-saving effect is limited. Therefore, an unmanned aerial vehicle for power inspection is proposed to improve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the above prior art, the technical problem to be solved by the utility model is how to design a more energy-saving power inspection unmanned aerial vehicle that can complete the suspension hovering operation to further improve the single inspection trip of the power inspection unmanned aerial vehicle.

[0006] To solve the above problems, the utility model provides an unmanned aerial vehicle for power inspection, which includes an unmanned aerial vehicle body and an inspection module mounted on the lower part of the unmanned aerial vehicle body.

[0007] An automatic clamp is installed on the upper part of the unmanned aerial vehicle body, and the automatic clamp includes:

[0008] An upper clamp plate is fixed to the upper end of the body of the unmanned aerial vehicle body through a connecting piece on one side of the upper clamp plate, and a first accommodating groove is formed in the middle lower part of the upper clamp plate.

[0009] A lower clamp plate is arranged in mirror image with the upper clamp plate along the horizontal plane, and a semicircular groove adapted to the cable is formed on the upper clamp plate and the lower clamp plate.

[0010] The connecting rod is an n-shaped rod, one end of the connecting rod is fixed to the upper end of the lower clamping plate, and the vertical rods on both sides of the connecting rod are slidably penetrated through the upper clamping plate.

[0011] The force receiving plate is fixed to the other end of the connecting rod, the force receiving plate is located below the upper clamping plate, and the force receiving plate is matched with the first accommodating groove.

[0012] The tension spring is fixed to the upper part of the upper clamping plate at the lower end, and the upper end of the tension spring is fixed to the middle part of the horizontal rod of the connecting rod.

[0013] The limiting piece limits the connecting rod when the upper clamping plate and the lower clamping plate are closed and when the upper clamping plate and the lower clamping plate are separated.

[0014] In the unmanned aerial vehicle for power inspection, the automatic clamp can realize automatic clamping of the cable and automatic loosening of the cable, so that the cable can be clamped without using additional power, so that the unmanned aerial vehicle body is suspended on the cable, the energy consumption of the unmanned aerial vehicle for power inspection during close-range observation is further reduced, the single inspection trip of the unmanned aerial vehicle for power inspection is prolonged, and better energy-saving effect is achieved.

[0015] As a further improvement of the present application, a limiting groove is formed on the side of the connecting rod away from the tension spring.

[0016] The limiting piece includes a limiting pin and a compression spring, the limiting pin is slidably embedded in the upper clamping plate, the limiting pin is elastically connected to the inside of the upper clamping plate through the compression spring, the end of the limiting pin away from the compression spring is formed with a conical body with a triangular cross section, and the end of the limiting pin away from the compression spring is in clamping engagement with the limiting groove.

[0017] Among them, the elastic force of the compression spring is greater than the elastic force of the tension spring.

[0018] As a further improvement of the present application, the inner wall of the semicircular groove of the upper clamping plate and the lower clamping plate is fixedly embedded with a friction increasing rib, the friction increasing rib is provided with a plurality of and uniformly distributed along the semicircular groove.

[0019] As a further improvement of the present application, a second accommodating groove is formed in the top of the upper clamping plate, the lower end of the tension spring is embedded in the second accommodating groove and fixed to the inner bottom wall of the second accommodating groove, and the upper end of the tension spring is completely retracted in the second accommodating groove when the tension spring is retracted.

[0020] As a further improvement of the present application, the connecting piece includes a fixed seat and a connecting frame, the fixed seat is fixed to the top of the body of the unmanned aerial vehicle body through bolts, the connecting frame is L-shaped and the upper end is fixed to one side of the upper clamping plate, the connecting frame is fixed with a flexible pad, and the flexible pad is located below the lower clamping plate and is attached to the bottom surface of the lower clamping plate.

[0021] As another improvement of the present application, a slot is formed in the front end of the limiting pin, and a roller is embedded in the slot and rolls when the roller abuts against the inner wall of the limiting slot or the side wall of the connecting rod.

[0022] To sum up, when the unmanned aerial vehicle body needs to observe the cable at close range, the automatic clamp can be used to clamp the adjacent cable near the cable to be observed, so that the unmanned aerial vehicle body can stop flying and observe. Specifically, first, align one side of the upper clamp plate and the lower clamp plate with the adjacent cable, and then make the upper clamp plate and the lower clamp plate move to the upper and lower ends of the adjacent cable after the unmanned aerial vehicle body flies. At this time, the unmanned aerial vehicle body descends, so that the upper end of the adjacent cable abuts against the lower side of the stress plate, and the upper clamp plate is pulled down by the connecting piece, so that the upper clamp plate gradually approaches the lower clamp plate against the elastic force of the tension spring, and finally closes with the lower clamp plate to form a complete hoop body to clamp the adjacent cable. At this time, the stress plate is completely embedded in the first accommodating groove, and the limiting pin limits the connecting rod under the elastic force of the compression spring, so that the position of the connecting rod and the upper clamp plate is relatively fixed, thereby maintaining a stable clamping state. The propeller of the unmanned aerial vehicle body stops working, and the observation is suspended.

[0023] After the observation is completed, the propeller of the unmanned aerial vehicle body is started again, so that the unmanned aerial vehicle body drives the upper clamp plate to rise through the connecting piece, so that the limiting pin loses the limiting effect. At this time, the lifting force of the unmanned aerial vehicle body and the elastic force of the tension spring cooperate to separate the upper clamp plate and the lower clamp plate, and then the unmanned aerial vehicle body flies sideways to separate from the adjacent cable and continue the inspection work.

[0024] The automatic clamp can realize automatic clamping and automatic loosening of the cable, so that the cable can be clamped without using additional power, and the unmanned aerial vehicle body can be suspended on the cable, which can further reduce the energy consumption of the power inspection unmanned aerial vehicle when observing at close range, prolong the single inspection trip of the power inspection unmanned aerial vehicle, and achieve better energy saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the first embodiment of the present application;

[0026] Figure 2 It is an automatic clamp and connecting piece front view when the upper clamp plate of the first embodiment of the present application is cut open;

[0027] Figure 3 It is a partial cut view of the upper clamp plate and the connecting rod of the first embodiment of the present application;

[0028] Figure 4 It is a structural schematic diagram of the connecting piece of the first embodiment of the present application;

[0029] Figure 5 It is a structural schematic diagram of the limiting pin and the roller of the second embodiment of the present application.

[0030] Explanation of reference numerals in the drawings:

[0031] 1 drone body, 2 inspection module, 3 automatic clamp, 31 upper clamp plate, 311 first accommodating groove, 312 second accommodating groove, 32 lower clamp plate, 33 connecting rod, 331, limiting groove; 34 force plate, 35 tension spring, 36 limiting pin, 361 embedding groove, 37 compression spring, 38 friction increasing rib, 4 connecting piece, 41 fixed seat, 42 connecting frame, 43 flexible pad, 5 roller. DETAILED DESCRIPTION

[0032] The two embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0033] First embodiment:

[0034] Figures 1-4 An unmanned aerial vehicle for power inspection is shown, which includes an unmanned aerial vehicle body 1 and an inspection module 2 carried below the unmanned aerial vehicle body 1. The unmanned aerial vehicle body 1 adopts an existing unmanned aerial vehicle, such as DJI M350 RTK unmanned aerial vehicle. The inspection module 2 is an existing commonly used carrying module for inspection, which is used to obtain one or more commonly used inspection data information such as image, infrared imaging or ultraviolet imaging during inspection. For example, Zenith L2 (high-precision surveying and mapping laser radar) can be used.

[0035] An automatic clamp 3 is installed above the unmanned aerial vehicle body 1. The automatic clamp 3 includes:

[0036] An upper clamp plate 31 is fixed on one side of the upper clamp plate 31 through a connecting piece 4 and the upper end of the body of the unmanned aerial vehicle body 1. A first accommodating groove 311 is formed in the middle lower part of the upper clamp plate 31.

[0037] A lower clamp plate 32 is arranged in mirror image along the horizontal plane with the upper clamp plate 31, and a semicircular groove adapted to the cable is formed on the upper clamp plate 31 and the lower clamp plate 32.

[0038] A connecting rod 33 is an n-shaped rod. One end of the connecting rod 33 is fixed to the upper end of the lower clamp plate 32, and the vertical rods on both sides of the connecting rod 33 are slidably penetrated through the upper clamp plate 31.

[0039] A force plate 34 is fixed to the other end of the connecting rod 33. The force plate 34 is located below the upper clamp plate 31 and is adapted to the first accommodating groove 311.

[0040] A tension spring 35 is fixed to the upper part of the upper clamp plate 31 at the lower end and fixed to the middle part of the horizontal rod of the connecting rod 33 at the upper end.

[0041] A limiting piece limits the connecting rod 33 when the upper clamp plate 31 and the lower clamp plate 32 are closed and when the upper clamp plate 31 and the lower clamp plate 32 are separated.

[0042] Based on the above structure, when the unmanned aerial vehicle body 1 needs to observe the cable at a close distance, the adjacent cable near the cable to be observed can be clamped by the automatic clamp 3, so as to facilitate the unmanned aerial vehicle body 1 to stop flying and observe. Specifically, first, align one side of the upper clamp plate 31 and the lower clamp plate 32 with the adjacent cable, and then make the upper clamp plate 31 and the lower clamp plate 32 move to the upper and lower ends of the adjacent cable after the unmanned aerial vehicle body 1 flies. At this time, the unmanned aerial vehicle body 1 descends, so that the upper end of the adjacent cable abuts against the lower side of the stress plate 34, and the upper clamp plate 31 is pulled down by the connecting piece 4, so that the upper clamp plate 31 gradually approaches the lower clamp plate 32 by overcoming the elastic force of the tension spring 35, and finally closes to form a complete hoop body with the lower clamp plate 32 to clamp the adjacent cable. At this time, the stress plate 34 is completely embedded in the first accommodating groove 311, and the limiting piece limits the connecting rod 33, so that the position of the connecting rod 33 and the upper clamp plate 31 is relatively fixed, thereby maintaining a stable clamping state. The propeller of the unmanned aerial vehicle body 1 stops working, and the observation is suspended;

[0043] After the observation is completed, the propeller of the unmanned aerial vehicle body 1 is started again, so that the unmanned aerial vehicle body 1 drives the upper clamp plate 31 to rise through the connecting piece 4, so that the limiting piece loses the limiting effect. At this time, the lifting force of the unmanned aerial vehicle body 1 and the elastic force of the tension spring 35 cooperate to make the upper clamp plate 31 and the lower clamp plate 32 separate. Then, the unmanned aerial vehicle body 1 flies sideways to separate from the adjacent cable and continue the inspection work.

[0044] The automatic clamp 3 can realize automatic clamping and automatic loosening of the cable, so that the cable can be clamped without using additional power, so that the unmanned aerial vehicle body 1 is suspended on the cable, which can further reduce the energy consumption of the power inspection unmanned aerial vehicle when observing at a close distance, prolong the single inspection trip of the power inspection unmanned aerial vehicle, and achieve better energy saving effect.

[0045] Further, a limiting groove 331 is formed on the side of the connecting rod 33 away from the tension spring 35;

[0046] The limiting piece includes a limiting pin 36 and a compression spring 37. The limiting pin 36 is slidingly embedded in the upper clamp plate 31, and the limiting pin 36 is elastically connected to the inside of the upper clamp plate 31 through the compression spring 37. The end of the limiting pin 36 away from the compression spring 37 forms a conical body with a triangular cross section, and the end of the limiting pin 36 away from the compression spring 37 is in clamping cooperation with the limiting groove 331.

[0047] The elastic force of the compression spring 37 is greater than the elastic force of the tension spring 35.

[0048] The elastic force of the compression spring 37 can automatically press the limiting pin 36 into the limiting groove 331 when the limiting pin 36 corresponds to the limiting groove 331, so as to limit the connecting rod 33, and the elastic force of the tension spring 35 can automatically separate the upper clamp plate 31 and the lower clamp plate 32 when the upper clamp plate 31 and the lower clamp plate 32 correspond to each other, so as to release the limiting of the connecting rod 33. Figure 3It can be seen that the limiting groove 331 is provided with two and is distributed up and down, so that the limiting pin 36 can limit the two positions of the connecting rod 33, and the two positions correspond to the state that the force receiving plate 34 is completely embedded in the first accommodating groove 311 and the state that the cross bar of the connecting rod 33 is attached to the top of the upper clamping plate 31, thereby realizing the corresponding limiting effect.

[0049] Further, the inner walls of the semicircular grooves of the upper clamping plate 31 and the lower clamping plate 32 are fixedly embedded with friction increasing ribs 38, the friction increasing ribs 38 are made of elastic materials (such as rubber) commonly used in the prior art and have the effect of increasing the friction between the upper clamping plate 31, the lower clamping plate 32 and the cable, so that the upper clamping plate 31 and the lower clamping plate 32 are more stable when clamping the cable, and the unmanned aerial vehicle body 1 and the inspection module 2 are not easy to shake, thereby ensuring the stability during close observation, and the friction increasing ribs 38 are provided with multiple and are uniformly distributed along the semicircular grooves.

[0050] Further, the top of the upper clamping plate 31 is provided with a second accommodating groove 312, the lower end of the tension spring 35 is embedded in the second accommodating groove 312 and is fixed with the bottom wall of the second accommodating groove 312, and the upper end of the tension spring 35 is completely retracted in the second accommodating groove 312 when the tension spring 35 is contracted, thereby saving the overall occupied space.

[0051] Further, the connecting piece 4 includes a fixed seat 41 and a connecting frame 42, the fixed seat 41 is fixed with the top of the body of the unmanned aerial vehicle body 1 through bolts, the connecting frame 42 is L-shaped and the upper end is fixed with one side of the upper clamping plate 31, the connecting frame 42 is fixed with a flexible pad 43, the flexible pad 43 is made of flexible materials (such as sponge) commonly used in the prior art and suitable for the embodiment, which can have a certain buffering effect, the flexible pad 43 is located below the lower clamping plate 32 and is attached to the bottom surface of the lower clamping plate 32, which can avoid the excessive movement of the lower clamping plate 32 when separating from the upper clamping plate 31, thereby avoiding the disadvantage that the lower clamping plate 32 and the connecting frame 42 have a hard impact, and ensuring the reliability and safety of the overall structure.

[0052] The second embodiment:

[0053] Figure 5 It is shown that the front end of the limiting pin 36 is provided with an embedded groove 361, and a roller shaft 5 is rollingly embedded in the embedded groove 361, and the roller shaft 5 rolls when abutting against the inner wall of the limiting groove 331 or the side wall of the connecting rod 33, through the arrangement of the roller shaft 5, the wear between the sharp end of the limiting pin 36 and the inner wall of the limiting groove 331 or the side wall of the connecting rod 33 during relative movement can be reduced, thereby prolonging the service life of the limiting pin 36.

[0054] In combination with the current actual demand, the above-mentioned embodiments adopted by the present application do not limit the protection scope, various changes made within the knowledge range of those skilled in the art without departing from the concept of the present application still fall within the protection range of the present application.

Claims

1. A power line inspection drone, comprising a drone body (1) and an inspection module (2) mounted below the drone body (1), characterized in that: An automatic gripper (3) is mounted on top of the drone body (1), and the automatic gripper (3) includes: The upper clamp (31) is fixed to the upper part of the body of the UAV body (1) by a connector (4) on one side. A first receiving groove (311) is provided in the lower middle part of the upper clamp (31). The lower clamping plate (32) is mirrored with the upper clamping plate (31) along the horizontal plane, and both the lower clamping plate (32) and the upper clamping plate (31) are provided with semi-circular grooves adapted to the cable. Link (33), the link (33) is an n-shaped rod, one end of the link (33) is fixed to the upper end of the lower clamping plate (32), and the two vertical rods on both sides of the link (33) slide through the upper clamping plate (31). Force plate (34), the force plate (34) is fixed to the other end of the connecting rod (33), the force plate (34) is located below the upper clamping plate (31), and the force plate (34) is adapted to the first receiving groove (311); The lower end of the tension spring (35) is fixed to the upper part of the upper clamping plate (31), and the upper end of the tension spring (35) is fixed to the middle part of the crossbar of the connecting rod (33). The limiting component limits the connecting rod (33) when the upper clamping plate (31) and the lower clamping plate (32) are closed, and when the upper clamping plate (31) and the lower clamping plate (32) are separated.

2. The UAV for power line inspection according to claim 1, characterized in that: A limiting groove (331) is provided on the side of the connecting rod (33) away from the tension spring (35). The limiting component includes a limiting pin (36) and a compression spring (37). The limiting pin (36) is slidably embedded in the upper clamping plate (31). The limiting pin (36) is elastically connected to the interior of the upper clamping plate (31) through the compression spring (37). The end of the limiting pin (36) away from the compression spring (37) forms a cone with a triangular cross section. The end of the limiting pin (36) away from the compression spring (37) is engaged with the limiting groove (331). The compression spring (37) has a greater elastic force than the tension spring (35).

3. The UAV for power line inspection according to claim 2, characterized in that: The inner walls of the semicircular grooves of the upper clamping plate (31) and the lower clamping plate (32) are fixedly embedded with friction-increasing ribs (38), and multiple friction-increasing ribs (38) are provided and evenly distributed along the semicircular groove.

4. The UAV for power line inspection according to claim 1, characterized in that: The upper clamping plate (31) has a second receiving groove (312) at the top. The lower end of the tension spring (35) is embedded in the second receiving groove (312) and fixed to the bottom wall of the second receiving groove (312). When the tension spring (35) contracts, the upper end is completely retracted into the second receiving groove (312).

5. A power line inspection drone according to any one of claims 1-4, characterized in that: The connector (4) includes a fixed base (41) and a connecting frame (42). The fixed base (41) is fixed to the top of the body of the UAV body (1) by bolts. The connecting frame (42) is L-shaped and its upper end is fixed to one side of the upper clamping plate (31). A flexible pad (43) is fixed on the connecting frame (42). The flexible pad (43) is located below the lower clamping plate (32) and is in contact with the bottom surface of the lower clamping plate (32).

6. A power line inspection drone according to claim 2, characterized in that: The front end of the limiting pin (36) is provided with a groove (361), and a roller (5) is rolled and embedded in the groove (361). The roller (5) rolls when it abuts against the inner wall of the limiting groove (331) or the side wall of the connecting rod (33).

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