Paddle retracting mechanism for unmanned aerial vehicle and control system of paddle retracting mechanism

Abstract

The utility model discloses a propeller collecting mechanism for an unmanned aerial vehicle and a control system of the propeller collecting mechanism, the propeller collecting mechanism comprises a mounting bottom plate, a movable block and a propeller collecting stop lever, a servo electric cylinder is mounted on the left side of the upper end of the mounting bottom plate, and a lever support is mounted on the outer side of the upper end of the servo electric cylinder; the output end of the servo electric cylinder is connected with a movable block, and a connecting piece is installed on the outer side of the movable block through a hinge shaft. And a paddle collecting stop lever is inserted into the left end of the movable block, and a flange is arranged on the outer side of the upper end of the servo electric cylinder. The utility model belongs to the technical field of unmanned aerial vehicle propeller collection, and aims to solve the problems that in the prior art, a propeller collection stop lever is perpendicular to the plane of a propeller blade, dead points exist in the mode, the stop lever can be clamped, and normal propeller collection action cannot be completed. The technical effects are achieved as follows: as the paddle folding stop lever does fan-shaped motion, a stress point does not pass through the circle center of the plane where the paddles are located, namely, dead points do not exist, and normal paddle folding action can be conveniently and smoothly completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the unmanned aerial vehicle propeller collection technical field, specifically relates to a kind of propeller collection mechanism for unmanned aerial vehicle and control system thereof. BACKGROUND

[0002] The propeller collection mechanism of unmanned aerial vehicle is an important component in the design of unmanned aerial vehicle, which is responsible for storing propeller after completing the task of unmanned aerial vehicle, to reduce space occupation and improve portability, while the propeller collection mechanism needs to have enough strength and stability to withstand the weight of propeller and wind resistance in flight.

[0003] But most of the current unmanned aerial vehicle propeller collection mechanism is vertical plane propeller collection, i.e. propeller collection stop lever is perpendicular to blade plane, this kind of way has dead point, when blade is in a certain state, stress direction passes through the center of blade plane, blade will not move with propeller collection stop lever, but be stuck in stop lever, cannot complete normal propeller collection action, there is certain defect. Based on this situation, the utility model discloses a new unmanned aerial vehicle propeller collection mechanism and control system thereof, overall ceiling installation, servo cylinder is used, end lever mechanism is driven, so that propeller collection stop lever makes sector motion, stress point will not pass through the center of blade plane, there is no dead point. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides a kind of propeller collection mechanism for unmanned aerial vehicle and control system thereof, to solve the existing propeller collection stop lever and blade plane vertical, this kind of way has dead point, will be stuck in stop lever, cannot complete normal propeller collection action.

[0005] In order to achieve the above purpose, the present application provides the following technical solutions:

[0006] A kind of propeller collection mechanism for unmanned aerial vehicle, including installation bottom plate, movable block and propeller collection stop lever, the upper end left side of installation bottom plate is installed with servo cylinder, and the upper end outer side of servo cylinder is installed with lever support;

[0007] The output end of servo cylinder is connected with movable block, and the outer side of movable block is installed with connecting piece by hinge shaft;

[0008] The left end inside of movable block is inserted and installed with propeller collection stop lever.

[0009] Further, the upper end outer side of servo cylinder is provided with flange, and the flange is used to install lever support.

[0010] Further, the lower end of connecting piece is connected with lever support by hinge shaft.

[0011] Further, prefabricated through slot is formed in the middle of rear end of movable block, and the upper end of servo cylinder extends to the inside of prefabricated through slot.

[0012] Further, the upper end of the servo cylinder is connected with the movable block through a hinge, and the movable block is in a rectangular shape.

[0013] According to another aspect of the present application, a control system for a propeller folding mechanism of a UAV is provided, comprising a controller installed at the upper right side of a mounting base plate.

[0014] Further, the controller is provided with a power supply and communication interface, and is controlled by a general control system of the airport to supply power and exchange data.

[0015] Compared with the prior art, the present application has at least the following beneficial effects:

[0016] 1. When the propeller needs to be folded, the upper computer sends a motion instruction to the controller, the controller receives the instruction and controls the servo cylinder to move according to the predetermined position, and the folding occurs. At this time, the angle of the movable block changes through the lever support and the connecting piece, which drives the propeller folding stop rod to perform a fan-shaped motion, thereby completing the folding work. Because the propeller folding stop rod performs a fan-shaped motion, the force point does not pass through the center of the propeller surface, i.e., there is no dead point, so that the normal folding motion can be completed smoothly and conveniently.

[0017] 2. The side surface of the movable block is provided with a lever fulcrum, and the connecting piece is installed in the form of a hinge shaft, so that the connecting piece has a good installation and support effect on the movable block, thereby conveniently ensuring the rotation effect of the movable block. DETAILED DESCRIPTION

[0018] In order to more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes, structures shown in the drawings should not be regarded as limiting conditions for implementing the present application; for example, based on the technical concepts disclosed in the present application and the exemplary drawings, those skilled in the art can easily make routine adjustments or further optimization on the increase / decrease / assignment of certain units, specific shapes, positional relationships, connection modes, size ratio relationships, etc.

[0019] Fig. 1 A schematic diagram of the overall structure of a propeller folding mechanism and its control system for a UAV is provided for an embodiment of the present application;

[0020] Fig. 2 A schematic diagram of the overall structure of a propeller folding mechanism and its control system for a UAV is provided for an embodiment of the present application;

[0021] Fig. 3 A schematic diagram of the overall structure of a propeller folding mechanism and its control system for a UAV is provided for an embodiment of the present application;

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Mounting base plate; 2. Servo electric cylinder; 3. Controller; 4. Lever bracket; 5. Movable block; 6. Paddle stop bar; 7. Connecting piece; 8. Prefabricated through groove. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figs. 1 to 3 As shown, a propeller retraction mechanism and its control system for an unmanned aerial vehicle (UAV) according to the first aspect embodiment of this application includes: a mounting base plate 1, a movable block 5, and a propeller retraction stop bar 6. A servo electric cylinder 2 is mounted on the upper left side of the mounting base plate 1, and a lever bracket 4 is mounted on the upper outer side of the servo electric cylinder 2. A flange is provided on the upper outer side of the servo electric cylinder 2 for mounting the lever bracket 4. The servo electric cylinder 2 is a double-flange type, with its lower flange for mounting on the mounting base plate 1 and its upper flange for mounting the lever bracket 4. The bottom of the lever bracket 4 is perfectly matched with the front flange of the mounting base plate 1, improving the installation effect.

[0026] The output end of the servo electric cylinder 2 is connected to a movable block 5. A paddle stop 6 is inserted and installed inside the left end of the movable block 5. The left end of the movable block 5 has a groove so that the paddle stop 6 can be placed into the groove and fixed by a pin.

[0027] A connecting piece 7 is mounted on the outer side of the movable block 5 via a hinge shaft. The lower end of the connecting piece 7 is connected to the lever bracket 4 via a hinge shaft. A protruding piece on the side of the movable block 5 serves as a lever fulcrum, and the connecting piece 7 is mounted on it via a hinge shaft. The connecting piece 7 provides good installation and support for the movable block 5, facilitating the rotation of the movable block 5. A prefabricated through slot 8 is provided through the middle of the rear end of the movable block 5, and the upper end of the servo cylinder 2 extends into the interior of the prefabricated through slot 8. The upper end of the servo cylinder 2 is connected to the movable block 5 via a hinge. The movable block 5 is rectangular in shape, facilitating the connection between the movable block 5 and the servo cylinder 2 via a hinge shaft.

[0028] When installing, the installation base plate 1 is hoisted on the top of the terminal by the flange and screw, the propeller retraction stopper is parallel to the direction of the unmanned aerial vehicle propeller arm, each propeller blade is equipped with 2 sets of propeller retraction mechanisms, which are symmetrically installed on both sides of the propeller arm, so as to ensure that the propeller blades on both sides are retracted at the same time, in the normal state, the servo cylinder 2 is in the extended state, so that the propeller retraction stopper 6 is in the horizontal direction, and does not interfere with the movement track of other equipment in the terminal and the unmanned aerial vehicle platform; when the unmanned aerial vehicle reaches the specified position and needs to retract the propeller, the upper computer sends an action instruction to the controller 3, after the controller 3 receives the instruction, the servo cylinder 2 acts according to the predetermined position and retracts, at this time, the angle of the movable block 5 changes through the lever support 4 and the connecting sheet 7, so as to drive the propeller retraction stopper 6 to perform the sector motion, and the propeller retraction work is completed, because the propeller retraction stopper 6 performs the sector motion, the stress point does not pass through the center of the propeller blade plane, that is, there is no dead point, so that the normal propeller retraction action is conveniently and smoothly completed.

[0029] After the propeller retraction is completed, the controller 3 obtains the position data fed back by the servo cylinder 2, judges the position and feeds back to the upper computer, waits for the instruction given by the upper computer, and then performs the recovery action, the servo cylinder 2 is elongated, the movable block 5 and the propeller retraction stopper 6 are moved through the lever support 4 and the connecting sheet 7, so as to restore the initial horizontal position, and the whole propeller retraction process is completed.

[0030] When the propeller blade is just at the middle position of the propeller retraction mechanisms on both sides, the propeller retraction action is executed, the propeller blade cannot be retracted, but the propeller blade is at this position, does not interfere with other equipment in the terminal, and is not considered. If it is adapted to other terminals, the position may interfere, and a propeller retraction mechanism is added in the vertical direction of the propeller arm, the height of the added propeller retraction stopper is lower than that of the original two. When the propeller retraction action is executed, the added one moves first, moves the propeller blade to the position not in the middle of the two propeller retraction stoppers 6, and then executes the synchronous propeller retraction on both sides, so that the propeller retraction action is normally completed. After the propeller retraction is completed, the propeller retraction on both sides is recovered first, and then the propeller retraction in the vertical direction is recovered.

[0031] The control system comprises the controller 3, the controller 3 is installed on the upper right side of the installation base plate 1, the propeller retraction mechanism is modularized as a whole, the control system thereof does not have an active processing function and cannot execute the action autonomously, and needs to be connected with the upper computer. The system reserves the power supply and communication interface, controls the power on and off by the terminal general controller 3, adapts to the communication protocol thereof, and realizes data exchange.

[0032] The technical features of the above embodiments can be combined in any manner (as long as the combination of the technical features does not exist contradiction), in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described; these embodiments which are not explicitly written should also be considered as the range disclosed in the specification.

Claims

1. A mechanism for folding the propeller of a drone, comprising a mounting base plate (1), a movable block (5) and a folding stop lever (6), characterized in that, The upper end left side of the mounting base (1) is mounted with a servo cylinder (2), and the upper end outer side of the servo cylinder (2) is mounted with a lever support (4); The output end of the servo cylinder (2) is connected with a movable block (5), and the outer side of the movable block (5) is mounted with a connecting plate (7) through a hinge shaft; The left end inner side of the movable block (5) is insertedly mounted with a paddle collecting stop rod (6). 2.The mechanism for unmanned aerial vehicle according to claim 1, wherein, The upper end outer side of the servo cylinder (2) is provided with a flange for mounting the lever support (4). 3.The mechanism for unmanned aerial vehicle according to claim 1, wherein, The lower end of the connecting plate (7) is connected with the lever support (4) through a hinge shaft.

4. The mechanism according to claim 1, wherein, The rear end middle part of the movable block (5) is penetratedly provided with a prefabricated through slot (8), and the upper end of the servo cylinder (2) extends to the inner side of the prefabricated through slot (8).

5. The mechanism according to claim 4, wherein, The upper end of the servo cylinder (2) is connected with the movable block (5) through a hinge, and the shape of the movable block (5) is rectangular.

6. A control system for a propeller retraction mechanism of a drone, comprising a controller (3), characterized in that, The controller (3) is mounted on the upper end right side of the mounting base (1).

7. The control system of a propeller retraction mechanism for a UAV according to claim 6, wherein, The controller (3) is reserved with a power supply and communication interface, is controlled by the total control system of the terminal to turn on and off power, and is adapted to the communication protocol to realize data exchange.

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