An unmanned aerial vehicle delivery device with emergency release mechanism

Abstract

The application relates to the field of unmanned planes, and aims to provide an unmanned plane delivery device with an emergency separation structure, which can effectively throw off goods when the unmanned plane is in an emergency state, and has simple structure, light weight and easy control. The technical scheme is as follows: an unmanned plane delivery device with an emergency separation structure, characterized in that the emergency separation structure comprises two U-shaped sheet metal parts arranged on a fixed base, two L-shaped supports respectively movably inserted and positioned on the two U-shaped sheet metal parts, an adjustable support positioned on the fixed base through an adjustable structure, a hollow special-shaped shaft movably positioned on the two L-shaped supports, a clamping structure for clamping one end of a rope, an L-shaped rod movably positioned on the fixed base through a mounting support, a disc-shaped friction plate fixed to one end of the special-shaped shaft, a U-shaped friction plate in frictional cooperation with the disc-shaped friction plate, and a motor for driving the special-shaped shaft through a shaft hole structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of unmanned aerial vehicle, in particular the unmanned aerial vehicle delivery device with emergency separation structure. BACKGROUND

[0002] The unmanned aerial vehicle can be used to air drop supplies to areas where ground transportation is not convenient to reach. The existing unmanned aerial vehicle delivery device cannot complete the controlled delivery of goods, and direct drop will cause damage to the goods. The way of using rope to deliver goods also has defects, mainly that the rope is easy to knot with branches on the ground tree or the hook is hung on the branch during retraction, so that the unmanned aerial vehicle cannot continue to fly, which brings safety hazards to the unmanned aerial vehicle transportation. SUMMARY

[0003] The purpose of the present application is to solve the above problems, and the unmanned aerial vehicle delivery device with emergency separation structure is provided; the delivery device can effectively throw off the goods in emergency state, and has simple structure, light weight and easy control.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] An unmanned aerial vehicle delivery device with emergency separation structure, comprising a fixed seat arranged on the unmanned aerial vehicle body; characterized in that: the emergency separation structure comprises two U-shaped sheet metal parts arranged at an interval on the fixed seat, two L-shaped supports respectively movably inserted and positioned on the two U-shaped sheet metal parts, an adjustable support positioned on the fixed seat through an adjustable structure and applying force to the L-shaped support through a spring, a special-shaped shaft movably positioned on the two L-shaped supports to wind the rope, a clamping structure made on the special-shaped shaft for clamping one end of the rope, an L-shaped rod movably positioned on the fixed seat through a mounting support and connected to a cylinder at one end and pressed by a spring at the other end, a disc-shaped friction plate coaxially arranged and fixed to one end of the special-shaped shaft, a U-shaped friction plate fixed to the fixed seat and frictionally matched with the disc-shaped friction plate, and a motor fixed to the fixed seat and driving the special-shaped shaft through a shaft hole structure.

[0006] The two L-shaped supports and the corresponding U-shaped sheet metal parts have the same insertion direction to facilitate separation in emergency.

[0007] The adjustable structure comprises a long slot opened in the fixed seat and a bolt connecting the long slot and the adjustable support.

[0008] The card embedding structure comprises a protrusion integrated with the special-shaped shaft, a U-shaped slot made on the protrusion for inserting a rope but limiting a rope end to pass, a second spring arranged in the U-shaped slot for pressing the rope end, an inverted T-shaped block hingedly mounted in the U-shaped slot, and a small pulley mounted on the inverted T-shaped block and in sliding fit with the inner wall of the cylinder.

[0009] The shaft hole structure comprises a D-shaped blind hole opened on the disc-shaped friction plate and a D-shaped shaft fixed to the shaft end of the motor shaft and in engagement fit with the D-shaped blind hole.

[0010] The disc-shaped friction plate is made with a circular blind hole in plug fit with the top end of the electric push rod.

[0011] The mounting support is fixed on the fixed base and is provided with a horizontally arranged sliding hole, and the L-shaped rod member is positioned in the sliding hole in left-right sliding manner.

[0012] The present application has the following advantages:

[0013] 1. The rope can be separated from the air drop device by the automatic rope separation device, so that the unmanned aerial vehicle cannot be separated from the tree branch below due to the entanglement of the rope or the hook.

[0014] 2. The emergency separation device can separate the air drop mechanism from the unmanned aerial vehicle when the automatic rope separation device fails.

[0015] 3. During the falling process of the goods, the device with fixed damping can use a smaller torque motor to make the goods fall to a controlled area, which reduces the overall structure weight and prevents direct falling during the falling process of the goods.

[0016] 4. The present application has the advantages of simple structure, light weight and easy control. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the present application.

[0018] Figure 2 It is a front view structural schematic diagram of the present application. Figure 1

[0019] Figure 3 It is a sectional view structural schematic diagram of the present application. Figure 1

[0020] Figure 4 It is a front view structural schematic diagram of the present application.

[0021] Figure 5 It is a front view structural schematic diagram of the present application.​​

[0022] Figure 6 This is a schematic diagram of the front view of the disc-shaped friction pad in this invention.

[0023] Figure 7 This is a schematic diagram of the structure of the cargo in the falling state in this invention.

[0024] Figure 8 This is a schematic diagram of the structure in the automatic rope-detaching state of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure during emergency escape in this invention.

[0026] The markings in the diagram are as follows: 1. Fixed base; 2. First L-shaped support; 3. Second L-shaped support; 4. Third spring; 5. Adjustable support; 6. Irregular shaft; 6-1. Rope winding part; 6-2. First rectangular hole; 6-3. Second rectangular hole; 7. Cylinder; 8. Disc-shaped friction plate; 9. U-shaped friction plate; 10. Motor; 11. Electric push rod; 12. L-shaped rod; 13. Second spring; 14. Mounting support; 15. U-shaped sheet metal part; 16. Long groove; 17. Bearing seat; 18. First spring; 19. Protrusion; 19-1. U-shaped groove; 20. Circular blind hole; 21. D-shaped blind hole; 23. Small pulley; 24. Inverted T-shaped stop; 25. Hinge hole. Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings.

[0028] like Figures 1-6 As shown, the emergency release device includes a first L-shaped support 2, a second L-shaped support 3, a non-circular shaft 6, an L-shaped rod 12, a cylinder 7, a first spring 18, a second spring 13, a third spring 4, and a disc-shaped friction plate 8. Two U-shaped sheet metal parts 15 are fixed to the bottom surface of the fixed base 1 at a certain distance; the first L-shaped support 2 and the second L-shaped support 3 are respectively suspended on the fixed base 1 by a U-shaped sheet metal part 15, and the insertion direction of the two L-shaped supports and the corresponding U-shaped sheet metal parts is the same. Figure 1The first L-shaped support 2 and the second L-shaped support 3 are both inserted into the slot between the U-shaped metal piece and the fixed base from left to right, the special-shaped shaft 6 is rotatably positioned on the first L-shaped support 2 and the second L-shaped support 3 through the bearing seat 17, and the part of the special-shaped shaft between the first L-shaped support and the second L-shaped support 3 is the rope winding part 6-1 for winding the rope; the protrusion 19 is integrally formed on the special-shaped shaft, and the top of the protrusion is provided with a U-shaped slot 19-1 (the width of the U-shaped slot is slightly larger than the diameter of the rope but smaller than the diameter of the knot formed after the rope head is knotted); the inverted T-shaped block 24 is rotatably hingedly installed on the protrusion 19 at the hinge hole 25 on one side of the U-shaped slot; the small roller 23 is rotatably installed at the through hole on the central axis of the inverted T-shaped block 24 through bolts and is in sliding fit with the inner wall of the cylinder 7; the L-shaped rod 12 is horizontally slidably positioned on the fixed base through the mounting support 14 (the mounting support is fixed on the fixed base, a horizontal sliding hole is formed in the mounting support, and the L-shaped rod is slidably positioned in the sliding hole), and the right side of the L-shaped rod is connected with the right side of the fixed base 1 through the first spring 18 (the two ends of the first spring are connected with the L-shaped rod and the fixed base respectively). The cylinder 7 is sleeved on the special-shaped shaft 6 and is coaxially arranged with the special-shaped shaft, and the cylinder moves along the axis of the special-shaped shaft and is in sliding fit with the small roller 23; the upper end of the cylinder 7 is welded with the left end of the L-shaped rod 12 and can move along the axis of the special-shaped shaft under the driving of the L-shaped rod. The second spring 13 is also installed in the U-shaped slot 19, and the second spring can press the rope inserted into the U-shaped slot.

[0029] In addition, the first rectangular hole 6-2 and the second rectangular hole 6-3 are formed in the special-shaped shaft; the rope is wound on the special-shaped shaft, and the rope head at one end of the rope has a knot formed rope knot, and the diameter of the rope knot is smaller than the diameter of the inner cavity of the special-shaped shaft and the two rectangular holes thereon, but larger than the width of the U-shaped slot 19-1; so that the rope head wound on the special-shaped shaft can also pass through the first rectangular hole into the cavity of the special-shaped shaft, and then come out from the second rectangular hole and be inserted into the U-shaped slot 19-1.

[0030] A long slot 16 is formed in the fixed base 1, and the adjustable support 5 is installed in the long slot through bolts (see Figure 4 ), and the installation position of the support can be adjusted through the bolts matched with the long slot 16, so as to adjust the pre-tightening force of the third spring 4. The third spring 4 is located between the adjustable support 5 and the second L-shaped support 3, wherein the left side of the third spring 4 is fixedly connected with the adjustable support 5, and the right side is in contact. The disc-shaped friction plate 8 is fixed to the right end of the special-shaped shaft, and the disc-shaped friction plate 8 is coaxial with the D-shaped blind hole 21 in the center (as Figure 6 shown), and the disc-shaped friction plate part above the D-shaped blind hole 21 also has a circular blind hole 20. The disc-shaped friction plate 8 is coaxial with the special-shaped shaft 6 and is fixedly sleeved on the right end of the special-shaped shaft 6.

[0031] AsFigure 1 and Figure 7 As shown in the drawings, the driving device comprises a motor 10, an electric push rod 11 and a U-shaped friction plate 9. The motor 10 is installed on the fixed base 1, the D-shaped shaft fixed on the motor shaft is concentric with the special-shaped shaft 6 on the first L-shaped support and the second L-shaped support, and is embedded in the D-shaped blind hole of the disc-shaped friction plate 8, so that the disc-shaped friction plate can be driven to rotate by the D-shaped blind hole.

[0032] The electric push rod 11 is installed on the fixed base 1 above the motor 10, and can be embedded in the circular blind hole of the disc-shaped friction plate 8 when the push rod is extended, and a rectangular block with a circular arc notch is welded on the top of the push rod; the U-shaped friction plate 9 is vertically arranged and fixedly installed on the fixed base 1, and the disc-shaped friction plate 8 is in contact with the U-shaped friction plate to exert a certain damping on the rotation of the special-shaped shaft.

[0033] The electric push rod and the motor can be controlled by a remote control device (prior art, not described again).

[0034] The working principle of the unmanned aerial vehicle launching device with the emergency release structure is as follows: first, the inverted T-shaped block is flipped out of the U-shaped groove, then the rope end is clamped in the U-shaped groove 19-1 on the special-shaped shaft 6, the rope end after knotting is stretched out of the U-shaped groove, then the inverted T-shaped block is flipped back into the U-shaped groove to press the rope in the U-shaped groove, and the small roller 23 on the inverted T-shaped block 24 is pressed against the inner wall of the cylinder, so that the rope end can be clamped by the spring 13 and the inverted T-shaped block (the clamping position B of the rope by the inverted T-shaped block and the spring is shown in the drawings). Figure 1 Finally, the other end of the rope is sequentially threaded through the second rectangular hole of the special-shaped shaft, the cavity of the special-shaped shaft and the first rectangular hole, and then (around the L-shaped support 2) wound around the winding part 6-1 of the special-shaped shaft 6, and the goods are hung. The distance between the adjustable support 5 and the L-shaped support 2 is adjusted by adjusting the position of the adjustable support 5 in the long groove 16, so as to adjust the pre-tightening force of the third spring 4, so that the disc-shaped friction plate 8 and the U-shaped friction plate 9 generate a certain damping; then the unmanned aerial vehicle can take off. When the unmanned aerial vehicle is flying (not reaching the designated launching point), the electric push rod 11 is extended and inserted into the circular blind hole 20 of the disc-shaped friction plate 8, at this time the whole device is stationary. When starting to launch the goods (such as Figure 7As shown in Fig. 6, the electric push rod 11 retracts a certain distance and no longer embeds in the disc-shaped friction plate 8, at this time, the special-shaped shaft 6 starts to rotate under the action of the gravity of the goods to descend the goods at a certain rotating speed; the motor 10 is powered during the descending process of the goods, the rotating speed of the motor 10 is controlled, the acceleration of the descending of the goods is further adjusted, so as to achieve a lower landing speed and shorten the dropping time as much as possible. When the goods reach the ground and complete the goods dropping, the motor 10 reverses to drive the special-shaped shaft 6 to reverse, so as to recover the rope. If the rope is entangled with the branches below or the hooks below are entangled with the branches when the rope is recovered, at this time, the automatic rope releasing device (such as Figure 8 As shown in Fig. 6, the electric push rod 11 retracts a certain distance and no longer embeds in the disc-shaped friction plate 8, at this time, the special-shaped shaft 6 starts to rotate under the action of the gravity of the goods to descend the goods at a certain rotating speed; the motor 10 is powered during the descending process of the goods, the rotating speed of the motor 10 is controlled, the acceleration of the descending of the goods is further adjusted, so as to achieve a lower landing speed and shorten the dropping time as much as possible. When the goods reach the ground and complete the goods dropping, the motor 10 reverses to drive the special-shaped shaft 6 to reverse, so as to recover the rope. If the rope is entangled with the branches below or the hooks below are entangled with the branches when the rope is recovered, at this time, the automatic rope releasing device (such as Figure 9 As shown in Fig. 6, the electric push rod 11 retracts a certain distance and no longer embeds in the disc-shaped friction plate 8, at this time, the special-shaped shaft 6 starts to rotate under the action of the gravity of the goods to descend the goods at a certain rotating speed; the motor 10 is powered during the descending process of the goods, the rotating speed of the motor 10 is controlled, the acceleration of the descending of the goods is further adjusted, so as to achieve a lower landing speed and shorten the dropping time as much as possible. When the goods reach the ground and complete the goods dropping, the motor 10 reverses to drive the special-shaped shaft 6 to reverse, so as to recover the rope. If the rope is entangled with the branches below or the hooks below are entangled with the branches when the rope is recovered, at this time, the automatic rope releasing device (such as

Claims

1. A drone delivery device with an emergency detachment structure, comprising a fixed base (1) mounted on the fuselage of the drone; characterized in that: The emergency release structure includes two U-shaped sheet metal parts spaced apart on a fixed base, two L-shaped supports that are movably inserted into the two U-shaped sheet metal parts, an adjustable support (5) that is positioned on the fixed base by an adjustable structure and subjected to force by a spring on the L-shaped supports, a non-circular shaft (6) that is movably positioned on the two L-shaped supports to wind the rope, a snap-fit ​​structure made on the non-circular shaft to snap the rope end, an L-shaped rod (12) that is horizontally movable on the fixed base by a mounting support (14) and is connected to a cylinder (7) at one end and subjected to pressure by a spring at the other end, a disc-shaped friction plate (8) that is coaxially arranged and fixed to one end of the non-circular shaft, a U-shaped friction plate (9) that is fixed to the fixed base and frictionally engaged with the disc-shaped friction plate, and a motor (10) that is fixed to the fixed base and drives the non-circular shaft through a shaft hole structure. The electric push rod (11) is mounted on the fixed base and located directly above the motor (10). When the push rod extends, it can be inserted into the circular blind hole (20) of the disc-shaped friction plate (8).

2. The drone delivery device with an emergency escape structure according to claim 1, characterized in that: The two L-shaped supports are inserted in the same direction as the corresponding U-shaped sheet metal parts to facilitate disengagement in emergency situations.

3. The drone delivery device with an emergency detachment structure according to claim 2, characterized in that: The adjustable structure includes a long slot (16) formed on a fixed base and bolts connecting the long slot to the adjustable support.

4. The drone delivery device with an emergency detachment structure according to claim 3, characterized in that: The snap-fit ​​structure includes a protrusion (19) integrally connected to the irregular shaft, a U-shaped groove (19-1) formed on the protrusion for inserting a rope but restricting the passage of the rope end, a second spring (13) disposed in the U-shaped groove for pressing the rope end, an inverted T-shaped stop (24) hinged in the U-shaped groove, and a small pulley (23) mounted on the inverted T-shaped stop and slidingly engaged with the inner wall of the cylinder.

5. The drone delivery device with an emergency detachment structure according to claim 4, characterized in that: The shaft hole structure includes a D-shaped blind hole (21) opened on the disc-shaped friction plate and a D-shaped shaft fixed to the end of the motor shaft and meshing with the D-shaped blind hole.

6. The drone delivery device with an emergency escape structure according to claim 5, characterized in that: The disc-shaped friction plate has a circular blind hole (20) that is inserted into the top of the electric push rod.

7. The drone delivery device with an emergency detachment structure according to claim 6, characterized in that: The mounting bracket is fixed on the fixed base and has a horizontally set sliding hole, and the L-shaped rod can be slidably positioned in the sliding hole.

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