Separable warehouse and automatic clamping lead screw mechanism of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle separable warehouse and automatic clamping lead screw mechanism which comprises an unmanned aerial vehicle rack, a driving motor, a clamping assembly, a clamping jaw and a warehouse, the driving motor is fixedly installed on the unmanned aerial vehicle rack, the driving motor is connected with the clamping assembly, and the clamping assembly is connected with the clamping jaw. The two clamping assemblies are symmetrically installed on the unmanned aerial vehicle rack along the driving motor, the clamping assemblies are hinged to the clamping jaw, the clamping jaw is used for clamping a warehouse, and each clamping assembly comprises a double-end lead screw, a nut sliding block, a middle connecting rod and a guide rail. According to the separable warehouse and automatic clamping lead screw mechanism of the unmanned aerial vehicle, a double-end lead screw mechanism is adopted, a single motor drives the mechanism to move reversely on the two sides, clamping jaws on the two sides conduct clamping or releasing at the same time, the structure is simple, the self-locking characteristic of a lead screw nut pair is adopted, when the mechanism is in a clamping or idle state, power supply to the motor can be stopped, and the safety of the mechanism is improved. And the state is kept through the self-locking characteristic of the lead screw nut pair, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of logistics distribution cargo box transfer, in particular to an unmanned aerial vehicle (UAV) separable cargo hold and an automatic clamping lead screw mechanism. Background Technique

[0002] In recent years, the UAV technology has developed rapidly, and the market scale has gradually expanded. In the future, UAV logistics transportation will be more and more frequent. With the application of artificial intelligence technology, the UAV logistics scenario will be more intelligent and truly realize unmanned operation.

[0003] Customers' storage / retrieval will be completed through intelligent cabinets, and the intermediate process will be unmanned, which is completed by the cooperation of UAVs and intelligent cabinets.

[0004] The items will be placed in the above-mentioned cargo box of the intelligent cabinet and transported to the UAV take-off and landing platform through the internal transportation structure of the intelligent cabinet. Then the UAV will descend to the take-off and landing platform to automatically complete the loading of the box.

[0005] The UAV will carry the goods and fly to the next intelligent cabinet, automatically complete the unloading of the cargo box, and recycle the above-mentioned cargo box into the cabinet through the internal structure of the intelligent cabinet. At the same time, the UAV will carry the next empty box and fly to the previous intelligent cabinet to put the empty box into the intelligent cabinet, and so on in a cycle.

[0006] At present, the mainstream UAV cargo boxes are fixed. In the existing UAV delivery scenarios, manual operations are mostly required at the loading end and the delivery end to complete loading and unloading, which is very inconvenient. Some manufacturers are also turning to automated loading and unloading cargo holds, such as using electric doors in cooperation with the loading and unloading mechanisms on the UAV take-off and landing platform, rope methods, and hook methods, etc. These methods have defects such as complex mechanisms or easy shaking during the transportation of the cargo hold, which is not conducive to the application and popularization of UAV automated loading and unloading cargo holds. Content of the Utility Model

[0007] The purpose of the utility model is to provide an unmanned aerial vehicle (UAV) separable cargo hold and an automatic clamping lead screw mechanism to solve the defects mentioned in the above background technique.

[0008] To achieve the above object, a separable cargo hold for a drone and an automatic clamping lead screw mechanism are provided, including: a drone frame, a driving motor, a clamping assembly, a clamping jaw, and a cargo hold. The driving motor is fixedly installed on the drone frame, the driving motor is connected to the clamping assembly, and two groups of the clamping assemblies are symmetrically installed on the drone frame along the driving motor. The clamping assembly is hinged to the clamping jaw, and the clamping jaw is used for clamping the cargo hold. The clamping assembly includes: a double-headed lead screw, a nut slider, an intermediate connecting rod, and a guide rail. One end of the double-headed lead screw is connected to the driving motor, the other end of the double-headed lead screw is fixedly installed on the drone frame, the nut slider is arranged on the double-headed lead screw, a guide rail is fixedly installed below the nut slider, one end of the intermediate connecting rod is hinged to the nut slider, and the other end of the intermediate connecting rod is hinged to the clamping jaw. The clamping jaw is used for clamping the cargo hold.

[0009] Further, a free-side limit block is installed on one side of the lead screw close to the driving motor, a clamping-side limit block is installed on the side of the lead screw far from the driving motor, and the nut slider is arranged between the free-side limit block and the clamping-side limit block.

[0010] Further, the driving motor is a servo driving motor.

[0011] Further, an induction sheet is fixedly installed above the nut slider.

[0012] Further, a clamping-side limit sensor is installed on one side of the induction sheet close to the driving motor, and a free-side limit sensor is installed on the side of the induction sheet far from the driving motor.

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

[0014] 1. By adopting a double-headed lead screw mechanism, the bilateral reverse movement of the mechanism can be driven by a single motor, enabling the simultaneous clamping or release of the clamping jaws on both sides, and the mechanism is simple;

[0015] 2. By adopting the self-locking characteristic of the lead screw-nut pair, when the mechanism is in the clamping or idle state, the power supply to the motor can be stopped to save more energy;

[0016] 3. The state is maintained through the self-locking characteristic of the lead screw-nut pair, and the stability and reliability of the cargo hold clamping are higher. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the idle state of Embodiment 1 of the structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the clamping state of Embodiment 1 of the structure of the present utility model;

[0019] Figure 3 This is the structural schematic diagram of Embodiment 2 of the present utility model.

[0020] Reference numerals in the figure: 1, unmanned aerial vehicle (UAV) frame; 2, drive motor; 21, servo drive motor; 3, clamping assembly; 31, double-headed lead screw; 32, nut slider; 33, intermediate connecting rod; 34, guide rail; 4, jaw; 5, cargo hold; 6, idle side limit block; 7, clamping side limit block; 8, induction sheet; 9, clamping side limit sensor; 10, idle side limit sensor. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] Please refer to Figure 1 , the present utility model provides a separable cargo hold and automatic clamping lead screw mechanism for an unmanned aerial vehicle, including: an unmanned aerial vehicle frame 1, a drive motor 2, a clamping assembly 3, a jaw 4, and a cargo hold 5. The drive motor 2 is fixedly installed on the unmanned aerial vehicle frame 1. The drive motor 2 is connected to the clamping assembly 3. Two groups of the clamping assemblies 3 are symmetrically installed on the unmanned aerial vehicle frame 1 along the drive motor 2. The clamping assembly 3 is hinged to the jaw 4, and the jaw 4 is used for clamping the cargo hold 5.

[0024] The clamping assembly 3 includes: a double-headed lead screw 31, a nut slider 32, an intermediate connecting rod 33, and a guide rail 34. One end of the double-headed lead screw 31 is connected to the drive motor 2, and the other end of the double-headed lead screw 31 is fixedly installed on the unmanned aerial vehicle frame 1. The nut slider 32 is arranged on the double-headed lead screw 31. The guide rail 34 is fixedly installed below the nut slider 32. One end of the intermediate connecting rod 33 is hinged to the nut slider 32, and the other end of the intermediate connecting rod 33 is hinged to the jaw 4. The jaw 4 is used for gripping the cargo hold 5.

[0025] On one side of the lead screw close to the drive motor 2, an idle side limit block 6 is installed. On the side of the lead screw far from the drive motor 2, a clamping side limit block 7 is installed. The nut slider 32 is arranged between the idle side limit block 6 and the clamping side limit block 7. The clamping side limit block 7 and the idle side limit block 6 are located at the left and right extreme positions of the movement of the nut slider 32, ensuring that when the idle side limit sensor 10 and the clamping side limit sensor 9 fail, the nut slider 32 will not move beyond the limit, avoiding damage to the UAV body or the cargo compartment 5.

[0026] An induction sheet 8 is fixedly installed above the nut slider 32.

[0027] On one side of the induction sheet 8 close to the drive motor 2, a clamping side limit sensor 9 is installed. On the side of the induction sheet 8 far from the drive motor 2, an idle side limit sensor 10 is installed.

[0028] Process of clamping the cargo compartment: The drive motor 2 drives the double-headed lead screw 31 (the lead screws on both sides have opposite helix directions) to rotate. The nut sliders 32 on the left and right move in opposite directions along the axis of the double-headed lead screw 31. When the nut slider 32 moves towards the corresponding clamping jaw 4, the nut slider 32 will drive the clamping execution part of the clamping jaw 4 to move towards the docking part of the clamping jaw 4 of the cargo compartment 5 through the intermediate connecting rod 33. When the induction sheet 8 triggers the clamping side limit sensor 9, the clamping side limit sensor 9 sends a movement stop signal, and the drive motor 2 stops moving and is powered off. At this time, the clamping execution part of the clamping jaw 4 contacts the docking part of the clamping jaw 4 of the cargo compartment 5. At this time, the cargo compartment 5 is clamped by the clamping jaw 4, and the clamping jaws 4 on both sides of the UAV frame are in the clamping state. At this time, due to the self-locking state of the threaded connection between the nut slider 32 and the double-headed lead screw 31, the vibration of the cargo compartment 5 will not cause the movement of the nut slider 32, and the cargo compartment 5 is firmly limited, as Figure 2 shown.

[0029] Process of releasing the cargo compartment: When the nut slider 32 moves away from the corresponding clamping jaw 4, the nut slider 32 will drive the clamping execution part of the clamping jaw 4 to move away from the docking part of the clamping jaw 4 of the cargo compartment 5 through the intermediate connecting rod 33. When the induction sheet 8 on the nut slider 32 triggers the idle side limit sensor 10, the clamping side limit sensor 9 sends a movement stop signal, and the drive motor 2 stops moving and is powered off. At this time, the clamping execution part of the clamping jaw 4 is completely separated from the docking part of the clamping jaw 4 of the cargo compartment 5. The clamping jaws 4 on both sides of the UAV frame are in a completely separated state from the docking part of the clamping jaw 4 of the cargo compartment 5, and the cargo compartment 5 is released. At this time, due to the self-locking state of the threaded connection between the nut slider 32 and the double-headed lead screw 31, the clamping execution part of the clamping jaw 4 will maintain this state.

[0030] Embodiment 2

[0031] Please refer toFigure 3 , the present utility model provides a detachable cargo hold for a drone and an automatic clamping lead screw mechanism, comprising: a drone frame 1, a servo drive motor 21, a clamping assembly 3, a clamping jaw 4, and a cargo hold 5. The servo drive motor 21 is fixedly installed on the drone frame 1, and the servo drive motor 21 is connected to the clamping assembly 3. Two groups of the clamping assemblies 3 are symmetrically installed on the drone frame 1 along the servo drive motor 21. The clamping assembly 3 is hinged to the clamping jaw 4, and the clamping jaw 4 is used for clamping the cargo hold 5. It is characterized in that: the clamping assembly 3 comprises: a double-headed lead screw 31, a nut slider 32, an intermediate connecting rod 33, and a guide rail 34. One end of the double-headed lead screw 31 is connected to the servo drive motor 21, and the other end of the double-headed lead screw 31 is fixedly installed on the drone frame 1. The nut slider 32 is arranged on the double-headed lead screw 31. The guide rail 34 is fixedly installed below the nut slider 32. One end of the intermediate connecting rod 33 is hinged to the nut slider 32, and the other end of the intermediate connecting rod 33 is hinged to the clamping jaw 4. The clamping jaw 4 is used for gripping the cargo hold 5.

[0032] On one side of the lead screw close to the servo drive motor 21, an idle side limit block 6 is installed, and on the side of the lead screw far from the servo drive motor 21, a clamping side limit block 7 is installed. The nut slider 32 is arranged between the idle side limit block 6 and the clamping side limit block 7. The clamping side limit block 7 and the idle side limit block 6 are located at the left and right extreme positions of the movement of the nut slider 32, ensuring that when the idle side limit sensor 10 and the clamping side limit sensor 9 fail, the nut slider 32 will not move beyond the limit, avoiding damage to the drone body or the cargo hold 5.

[0033] Process of clamping the cargo hold: The servo drive motor 21 drives the double-headed lead screw 31 (the thread directions of the two sides of the lead screw are opposite) to rotate. The nut sliders 32 on the left and right sides move linearly in opposite directions along the axis of the double-headed lead screw 31. When the nut slider 32 moves towards the corresponding clamping jaw 4, the nut slider 32 will drive the clamping execution part of the clamping jaw 4 to move towards the clamping jaw 4 docking part of the cargo hold 5 through the intermediate connecting rod 33. When the double-headed lead screw 31 moves to the soft limit position (the soft limit point is set when the clamping jaw 4 is in the clamping state), the servo drive motor 21 stops moving and is powered off. At this time, the clamping execution part of the clamping jaw 4 contacts the clamping jaw 4 docking part of the cargo hold 5. At this time, the cargo hold 5 is clamped by the clamping jaw 4. The clamping jaws 4 on both sides of the drone frame are in the clamping state. At this time, due to the self-locking state of the threaded connection between the nut slider 32 and the double-headed lead screw 31, the vibration of the cargo hold 5 will not cause the movement of the nut slider 32, and the cargo hold 5 is firmly limited.

[0034] Process of releasing the cargo hold: When the nut slider 32 moves away from the corresponding measuring jaw 4, the nut slider 32 will drive the clamping execution part of the jaw 4 to move away from the jaw 4 docking part of the cargo hold 5 through the intermediate connecting rod 33. When the nut slider 32 moves to the idle side limit block 6, the servo drive motor 21 stops moving and is powered off. At this time, the clamping execution part of the jaw 4 is completely separated from the jaw 4 docking part of the cargo hold 5. The jaws 4 on both sides of the UAV frame are in a completely separated state from the jaw 4 docking part of the cargo hold 5, and the cargo hold 5 is released. At this time, since the threaded connection between the nut slider 32 and the double-headed lead screw 31 is in a self-locking state, the clamping execution part of the jaw 4 will maintain this state.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detachable cargo hold and automatic clamping screw mechanism for an unmanned aerial vehicle, comprising: An unmanned aerial vehicle frame (1), a driving motor (2), a clamping assembly (3), a clamping claw (4) and a cargo hold (5), wherein the driving motor (2) is fixedly mounted on the unmanned aerial vehicle frame (1), the driving motor (2) is connected to the clamping assembly (3), two groups of the clamping assemblies (3) are symmetrically mounted on the unmanned aerial vehicle frame (1) along the driving motor (2), the clamping assembly (3) is hinged to the clamping claw (4), and the clamping claw (4) is used to clamp the cargo hold (5), characterized in that: the clamping assembly (3) comprises: a double-headed screw rod (31), a nut slider (32 ), an intermediate connecting rod (33) and a guide rail (34), one end of the double-ended screw rod (31) is connected to the driving motor (2), the other end of the double-ended screw rod (31) is fixedly mounted on the UAV frame (1), the nut slider (32) is arranged on the double-ended screw rod (31), the guide rail (34) is fixedly mounted below the nut slider (32), one end of the intermediate connecting rod (33) is hinged on the nut slider (32), the other end of the intermediate connecting rod (33) is hinged to the clamp (4), and the clamp (4) is used to clamp the cargo bin (5).

2. The detachable cargo hold and automatic clamping screw mechanism of a drone according to claim 1, characterized in that: An idle side limit block (6) is installed on the side of the screw rod close to the drive motor (2), a clamping side limit block (7) is installed on the side of the screw rod away from the drive motor (2), and the nut slider (32) is arranged between the idle side limit block (6) and the clamping side limit block (7).

3. The detachable cargo hold and automatic clamping screw mechanism of a drone according to claim 2, characterized in that: The drive motor (2) is a servo drive motor (21).

4. The detachable cargo hold and automatic clamping screw mechanism of a drone according to claim 2, characterized in that: An induction sheet (8) is fixedly mounted above the nut slider (32).

5. The detachable cargo hold and automatic clamping screw mechanism of a drone according to claim 4, characterized in that: A clamping side limit sensor (9) is installed on the side of the induction sheet (8) close to the drive motor (2), and an idle side limit sensor (10) is installed on the side of the induction sheet (8) away from the drive motor (2).

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