CN111746813A - Lifting system for small-sized unmanned aerial vehicle - Google Patents
Lifting system for small-sized unmanned aerial vehicle Download PDFInfo
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- CN111746813A CN111746813A CN201910238109.1A CN201910238109A CN111746813A CN 111746813 A CN111746813 A CN 111746813A CN 201910238109 A CN201910238109 A CN 201910238109A CN 111746813 A CN111746813 A CN 111746813A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
- B64D47/08—Arrangements of cameras
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/25—Fixed-wing aircraft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U2101/00—UAVs specially adapted for particular uses or applications
- B64U2101/30—UAVs specially adapted for particular uses or applications for imaging, photography or videography
Abstract
The invention relates to the technical field of unmanned aerial vehicles, and provides a lifting system for a small-sized unmanned aerial vehicle, which comprises: the top end of the main body frame is connected with the unmanned aerial vehicle body and is used for being fixedly connected with the unmanned aerial vehicle; the driving mechanism is arranged on the main body frame; the lifting mechanism comprises a traction rope, the traction rope comprises a first end and a second end which are mutually connected, the first end is connected with the transmission mechanism, and the first end drives the second end to move under the driving of the transmission mechanism; and the load supporting device is connected with the second end of the traction rope and moves away from or close to the top end of the main body frame along with the second end of the traction rope. The lifting system is applied to enable the load to avoid obstacles in time, the service life of the load device is prolonged, and the task execution quality is improved.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicles, in particular to a lifting system for a small-sized unmanned aerial vehicle.
Background
The unmanned aerial vehicle is an unmanned aerial vehicle controlled by a radio remote control device or an onboard computer program control system. The unmanned aerial vehicle has the advantages of simple structure and low use cost, not only can complete the task executed by the piloted aircraft, but also is more suitable for the task which is not suitable for being executed by the piloted aircraft. The emergency early warning device has great effects on emergency and early warning of emergencies. For example, the unmanned aerial vehicle is used for taking pictures of landforms, and aerial images of the unmanned aerial vehicle have the advantages of high definition, large scale, small area and high occurrence, and are particularly suitable for acquiring aerial images (roads, railways, rivers, reservoirs, coastlines and the like) in banded regions. At present, the following problems can occur in the task execution process of an unmanned aerial vehicle load device:
1. in the process of executing the task, the load can swing and vibrate due to the impact influence of the airflow, the service life of the load device is shortened, and the task executing process is not controlled;
2. during the task, the load device is fixed on the machine body, and the space environment is obstructed, so that the load device cannot be effectively controlled.
Disclosure of Invention
The terms used in the present invention are explained below:
unmanned aerial vehicle flies to control: unmanned aerial vehicle flies to control and indicates can stabilize unmanned aerial vehicle flight gesture to can control unmanned aerial vehicle autonomous or semi-autonomous flight's control system, be unmanned aerial vehicle's brain.
Three-axis stability augmentation pan-tilt: the three-axis stability-increasing pan-tilt is a device for realizing the stable control of the posture of a target object, in other words, the object can keep the posture of the object still during movement. Taking photography as an example, after the stability-increasing tripod head is applied, a photographer can still shoot a stable picture in the motion process.
The invention provides a lifting system for an unmanned aerial vehicle, which aims to solve the technical problem that the structures such as a camera, a holder and the like are easily damaged when the unmanned aerial vehicle descends due to the fact that a three-axis stability-increasing holder is directly exposed at the lower part of a machine body.
The invention provides a lifting system for a small-sized unmanned aerial vehicle, which is used for carrying a load device and comprises:
the top end of the main body frame is connected with the unmanned aerial vehicle body and is fixedly connected with the unmanned aerial vehicle;
the driving mechanism is arranged on the main body frame;
the transmission mechanism is connected with the driving mechanism and moves under the driving of the driving mechanism,
the lifting mechanism comprises a traction rope, the traction rope comprises a first end and a second end which are connected with each other, the first end is connected with the transmission mechanism, and the first end drives the second end to move under the driving of the transmission mechanism;
the load supporting device is connected with the second end of the traction rope and moves away from or close to the top end of the main body frame along with the second end of the traction rope.
Optionally, the main body frame includes an upper support plate, a lower support plate and a support frame, the support frame is respectively and fixedly connected to the upper support plate and the lower support plate, the lower support plate is provided with an opening, so as to form an accommodating space with an open lower end, and the load device is driven by the lifting mechanism to extend out of or retract into the main body frame through the opening;
optionally, the lifting mechanism further comprises a limiting plate connected with the traction rope, and a limiting frame matched with the limiting plate is arranged in the main body frame, so that the limiting plate is driven by the traction rope to move up and down in the limiting frame.
Optionally, the driving device comprises a steering engine, the transmission device comprises a rotary steering wheel, and the steering engine is connected with the rotary steering wheel through a shaft;
the first end of the haulage rope passes through the upper supporting plate and is fixedly connected with the rotary steering wheel, so that the haulage rope is wound on the rotary steering wheel, and the second end of the haulage rope is connected with the load supporting device in a punching, rope threading and knotting mode.
Optionally, the limiting plate of the lifting device further includes a slider, and the main body frame further includes a guide rail matched with the slider, so that the slider on the limiting plate moves up and down along the guide rail.
Optionally, the lifting device further includes a spring, one end of the spring is fixedly connected to the upper supporting plate, the other end of the spring is fixedly connected to the load supporting device, the length of the spring in a natural state is greater than or equal to the height of the supporting frame, and the traction rope is driven by the driving mechanism to pull the load supporting device so as to compress the spring.
Optionally, the lifting system further comprises a self-locking structure, and the self-locking structure is arranged between the load supporting device and the lower supporting plate and used for fixing the relative position of the load supporting device on the main body frame.
Optionally, the self-locking structure comprises a first magnet arranged on the lower surface of the load supporting device and a second magnet arranged on the upper surface of the lower supporting plate, and when the load supporting device is close to the lower supporting plate, the first magnet and the second magnet are magnetically attracted, so that the load supporting device and the lower supporting plate are tightly attracted and fixed.
Optionally, the load supporting device comprises a load mounting plate, and a plurality of shock-absorbing elastic bodies are arranged on the lower surface of the load mounting plate.
Optionally, the load strutting arrangement includes the triaxial and increases steady cloud platform, the triaxial increase steady cloud platform with the load mounting panel is connected, and is located the below of load mounting panel, a plurality of elastomers press from both sides and are in between triaxial increase steady cloud platform and the load mounting panel.
The lifting mechanism comprises a traction rope, the traction rope comprises a first end and a second end which are rigidly connected, the first end is connected with the transmission mechanism, and the first end drives the second end to move under the driving of the transmission mechanism; the load supporting device is connected with the second end of the traction rope and moves away from or close to the top end of the main body frame along with the second end of the traction rope. When the unmanned aerial vehicle needs the load device on the lifting system to work, the lifting system drives the load supporting device to move downwards, and then drives the load device to work to a preset position, and when the unmanned aerial vehicle finishes working, the lifting system drives the load supporting device to move upwards, and then drives the load device to contract to the preset position. The load device is controlled to move through the lifting system, so that the load device is prevented from being damaged when the unmanned aerial vehicle executes a task, the service life of the load is prolonged, and the task execution quality is improved.
Drawings
Fig. 1 is a perspective view of a lifting system according to an embodiment of the present invention in a working state;
FIG. 2 is a schematic view of a three-axis stability augmentation pan/tilt and camera fully extended out of the belly of an unmanned aerial vehicle;
FIG. 3 is a perspective view of an embodiment of the present invention illustrating a lifting system in an inoperative state;
fig. 4 shows the circuit connection of the elevator system.
Reference numerals:
1-an upper support plate; 2-a support frame; 3-a lower support plate; 4-a steering engine; 5-steering engine rotating rudder wheel; 6-a traction rope; 7-a guide rail; 8-a slide block; 9-a limiting plate; 10-a strut; 11-a three-axis stability augmentation pan-tilt; 12-cradle head damping ball; 13-load mounting plate; 14-a limit frame; 15-supporting the mounting plate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a perspective view of a working state of a lifting system according to an embodiment of the present invention, and as shown in fig. 1, the lifting system includes: the device comprises a main body frame, a driving mechanism, a transmission mechanism, a lifting mechanism and a load supporting device. The top end of the main body frame is connected with the unmanned aerial vehicle body and is used for being fixedly connected with the unmanned aerial vehicle; the driving mechanism is arranged on the main body frame; the transmission mechanism is connected with the driving mechanism and moves under the driving of the driving mechanism; the lifting mechanism comprises a traction rope, the traction rope comprises a first end and a second end which are rigidly connected, the first end is connected with the transmission mechanism, and the first end drives the second end to move under the driving of the transmission mechanism; the load support device is connected with the second end of the traction rope and moves away from or close to the top end of the main body frame along with the second end of the traction rope.
A load, such as a camera, a video camera, etc., is mounted on the load support device. When the lifting mechanism enters a working state, the driving device drives the transmission device to rotate, so that the first end of the traction rope of the lifting mechanism is driven to move, the first end of the traction rope drives the second end of the traction rope to move, and the load supporting device is far away from or close to the top end of the main body frame under the driving of the second end of the traction rope. This operating system can make load be close to or keep away from the main part frame top at the during operation, avoids keeping away from the barrier when the obstacle appears in unmanned aerial vehicle external environment, has effectively avoided the load device to damage, has prolonged load device life.
In the embodiment of the invention, the main body frame comprises an upper supporting plate 1, a lower supporting plate 3 and a supporting frame 2, wherein the upper supporting plate 1 is fixedly connected with the supporting frame 2, the lower supporting plate 3 is fixedly connected with the supporting frame 2, and the lower supporting plate 33 is provided with an opening, so that an accommodating space with an opening at the lower end is formed, and the load device is driven by the lifting mechanism to extend out of or retract into the main body frame through the opening of the accommodating frame; wherein the fixed connection mode can be selected from the fixed connection of a perforating screw or the fixed connection of glue.
Specifically, the driving mechanism is fixed on the support frame 2, the driving mechanism is connected with the transmission mechanism, a first end of a traction rope of the lifting mechanism is connected with the transmission mechanism, and a second end of the traction rope is connected with the load supporting device, so that the driving mechanism is driven to drive the transmission mechanism to rotate, the traction rope of the lifting mechanism draws the load supporting device to move, and finally the load device is driven by the lifting mechanism to extend out of or retract into the main body frame through an opening of the containing frame.
In the embodiment of the invention, the lifting mechanism further comprises a limit plate 9 connected with the traction rope, a limit frame 14 matched with the limit plate 9 is arranged in the main body frame, and the limit plate is driven by the traction rope to move up and down in the limit frame 14, so that the load supporting device moves in a preset stroke.
In the embodiment of the invention, the driving device is a steering engine 4, the transmission device is a steering engine rotating steering wheel 5, the steering engine 4 is fixedly connected on the support frame 2 by adopting a perforating screw, the steering engine 4 and the steering engine rotating steering wheel 5 are connected with a steering wheel inner hole gear shaft through a steering engine output gear, the first end of the traction rope penetrates through the upper support plate and is fixedly connected with the rotating steering wheel, the traction rope is wound on the rotating steering wheel, and the second end of the traction rope is connected with the load support device by adopting a perforating rope threading and knotting mode.
Specifically, the steering engine 4 through the driving device drives the rotary steering wheel 5 of the transmission device to rotate, and then the traction rope is partially wound on the steering wheel 5, so that the second end of the traction rope penetrates through the upper support frame 2 to extend downwards or contract, and the load support device is driven to move up and down.
In the embodiment of the invention, the limiting plate of the lifting device is connected with the sliding block, and the main body frame further comprises a guide rail matched with the sliding block, so that the sliding block on the limiting plate moves up and down along the guide rail. Specifically, when the traction rope 6 is in a traction state inside the main body frame, the traction rope pulls the load supporting device to enable the sliding block 8 to slide up and down along the guide rail 7, and the lifting device improves the precision of the lifting system by arranging the sliding block and the guide rail.
In the embodiment of the invention, the lifting device further comprises a spring, one end of the spring is fixedly connected with the upper supporting plate, the other end of the spring is fixedly connected with the load supporting device, the length of the spring in a natural state is larger than or equal to the height of the supporting frame, the spring is always in a compressed state, therefore, under the action of the elastic force of the spring, the load supporting device is abutted against a preset limiting position, under the driving of the driving mechanism, the traction rope pulls the load supporting device, so that the spring is compressed, and finally, the load supporting device is pulled to the preset position. Under the action of the driving mechanism and the lifting mechanism, the load supporting device can be stably adjusted to a preset position and can still be kept at the preset position without being influenced in the process of external force or gravity center change.
In an embodiment of the present invention, the lifting system further includes a self-locking structure disposed between the load supporting device and the lower support plate for fixing the load supporting device and the lower support plate. The self-locking structure can comprise a first magnet (not shown in the figure) arranged on the load supporting device and a second magnet (not shown in the figure) arranged on the upper surface of the lower supporting plate, when the load supporting device is close to the lower supporting plate, the first magnet and the second magnet are magnetically attracted, so that the load supporting device and the lower end of the main body frame of the lifting system are tightly attracted and fixed.
The self-locking structure can further comprise a clamping groove formed in the lower surface of the load supporting device and a buckle (not shown in the figure) arranged on the upper surface of the lower supporting plate and capable of being buckled with the clamping groove, when the load supporting device extrudes the lower supporting plate, the buckle and the clamping groove are matched to be buckled, and therefore the load supporting device and the lower supporting plate are tightly fixed. Reference may be made to existing clip and slot designs with respect to the above described clip and slot designs.
The self-locking structure is not limited to the enumerated structure, the load supporting device can be stably locked on the lower supporting plate 3 through the self-locking structure, the stability of the load device of the lifting system in work is facilitated, meanwhile, the self-locking structure can be prevented from being unlocked due to the fact that acceleration is large, airflow impact is caused, and the like, and the load supporting device and the lower supporting plate are fixed more firmly.
In an embodiment of the present invention, the load supporting means includes a support mounting plate 15, and a lower surface of the support mounting plate 15 is provided with a plurality of shock-absorbing elastic bodies. Specifically, the support mounting plate 15 is connected with the load device, vibration is reduced by arranging a plurality of damping elastic bodies to be clamped between the load mounting plate 15 and the load device, and the service life of the storage tank can be prolonged by the load device such as a pesticide storage tank.
In the embodiment of the invention, the load supporting device comprises a three-axis stability-increasing pan-tilt 11 and a supporting mounting plate 15, wherein the three-axis stability-increasing pan-tilt 11 is positioned below the supporting mounting plate 15 and is connected with the supporting mounting plate 15 by adopting a screw rod, a connecting rod mechanism, a bracket, a riveting or a welding manner.
A plurality of pan-tilt damping balls 12 are arranged between the supporting mounting plate 15 and the three-axis stability-increasing pan-tilt 11. The triaxial stability-increasing cradle head 11 can reduce the influence of the swinging vibration of the camera caused by the impact of the airflow, prolong the service life of the load device, improve the quality of task execution, such as an aerial photography task and the like, and improve the quality of a shot picture. The cloud deck shock absorption ball 12 can further reduce the influence of airflow impact on the swinging vibration of the camera.
The operating system accessible main body frame (if go up backup pad 1, support frame 2 or bottom suspension fagging 3), it is fixed with the unmanned aerial vehicle machine abdomen, fixed mode can be screw rod fixed, fix with screw, welding etc..
In the embodiment of the invention, the lifting system further comprises a plurality of supporting rods 10, wherein the upper ends of the supporting rods 10 are connected with the upper supporting plate 1 through screws, and the lower ends of the supporting rods 10 are connected with the lower supporting plate 3 through screws. The arrangement of the supporting rods increases the stability of the main body frame.
The lifting system is manufactured by assembling the components through the structural connection relation and the preset circuit connection relation, and is installed on the belly of the unmanned aerial vehicle, and loads such as a camera or a video camera are fixedly installed on the load supporting device, and the video camera is taken as an example below. The preset circuit connection relationship is shown in fig. 4: the control wire of the steering engine is connected with a three-axis stability-increasing tripod head lifting control port of the unmanned aerial vehicle flight control, the three-axis stability-increasing tripod head lifting control port is connected with a control circuit wire joint in a lifting system, and the control circuit wire joint in the lifting system is connected with a camera attitude control port of a camera fixed on a load supporting device.
When the unmanned aerial vehicle reaches a preset height and starts tasks such as aerial photography or surveying and mapping, the unmanned aerial vehicle controls a gear in a steering engine 4 to rotate through a flight control system of the unmanned aerial vehicle so as to drive a steering engine rotating steering wheel 5 to rotate anticlockwise, a driving slide block 8 slides downwards on a guide rail 7, and meanwhile, a traction rope 6 wound on the steering engine rotating steering wheel 5 moves to convert circular motion into linear motion, so that a three-axis stability-increasing tripod head 11 is uniformly lowered to a preset position at the lower part, namely the position where a load supporting device cannot move downwards any more; at the moment, the self-locking structure carries out self-locking, namely the first magnet and the second magnet are closely attracted together, or a buckle is clamped with the clamping groove, or other self-locking forms are adopted; after the load supporting device and the lower supporting plate 3 are tightly fixed, the unmanned aerial vehicle flight control system receives a signal that the three-axis stability augmentation holder 11 does not move any more, the steering engine 4 is controlled to stop working, then the lifting device stops moving, the three-axis stability augmentation holder and the camera completely extend out of the main body frame, namely, the abdomen of the unmanned aerial vehicle is completely extended out, shooting work can be carried out, and fig. 2 is a schematic diagram that the three-axis stability augmentation holder and the camera completely extend out of the abdomen of the unmanned aerial vehicle.
Fig. 3 is a perspective view of the non-operating state of the lifting system according to the embodiment of the present invention, in which the camera on the load supporting device is completely retracted into the lifting system, and specifically, the process of the lifting system retracting the camera on the load supporting device into the main body frame includes: the unmanned aerial vehicle flight control system controls a steering engine 4 to drive a steering engine rotary steering wheel 5 to rotate clockwise, so that a sliding block 8 slides upwards along a guide rail 7, a self-locking structure is unlocked, meanwhile, a traction rope 6 which is positioned in a lifting system and perpendicular to the horizontal plane moves upwards, linear motion is converted into circular motion on the steering engine rotary steering wheel 5, and the load supporting device moves upwards to a preset position, namely the lifting position of a contraction load device, so that a three-axis stability enhancement cradle head and a camera are completely contracted into a main body frame, namely the abdomen of the unmanned aerial vehicle; the contraction process is mainly used for the unmanned aerial vehicle before landing or after shooting and other works are completed, the camera does not need to be exposed outside the abdomen of the unmanned aerial vehicle, and the impact of airflow or other mechanical force on the three-axis stability augmentation holder and the camera is avoided, so that the three-axis stability augmentation holder and the camera are well protected, and the service life of the three-axis stability augmentation holder and the camera is prolonged.
The invention connects the driving device with the main body frame through the driving device, the transmission device, the lifting device, the main body frame and the load supporting device, the lifting device is connected with the main body frame, the transmission device is connected with the driving device, the load supporting device is connected with the lifting device, the lifting system is installed, and the load, such as a camera, a video camera and the like, is installed on the load installing plate. When beginning to shoot the state, unmanned aerial vehicle flight control system sends corresponding control command to drive arrangement, drive arrangement begins work, the drive is rotated to predetermineeing the direction by actuating system, thereby drive elevating gear downstream to predetermineeing the position, and then it stretches out inside the elevating system to drive the load of installing on the load mounting panel, take by plane, when accomplishing the shooting, unmanned aerial vehicle flight control system sends corresponding control command to drive arrangement, the drive arrangement drive is rotated to predetermineeing the direction by actuating system, thereby drive elevating gear upward movement to predetermineeing the position, and then it contracts to inside the main body frame completely to drive the load of installing on the load mounting panel. The lifting system can enable the load to move downwards to extend out of the lifting system during work and move upwards to retract into the main body frame during work, so that the load such as a camera, a cloud deck and other structures are prevented from being damaged during landing of the unmanned aerial vehicle, and the service life of the load is prolonged; and through setting up triaxial and increasing steady cloud platform and cloud platform damping ball, solved the in-process of taking photo by plane, owing to can receive the air current impact influence, can make the camera shake vibrations, shorten the life of camera to lead to taking the blurred problem of picture, the relatively poor quality.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A lift system for a small unmanned aerial vehicle for carrying a load, the lift system comprising:
the top end of the main body frame is connected with the unmanned aerial vehicle body and is fixedly connected with the unmanned aerial vehicle;
the driving mechanism is arranged on the main body frame;
the transmission mechanism is connected with the driving mechanism and moves under the driving of the driving mechanism;
the lifting mechanism comprises a traction rope, the traction rope comprises a first end and a second end which are connected with each other, the first end is connected with the transmission mechanism, and the first end drives the second end to move under the driving of the transmission mechanism;
the load supporting device is connected with the second end of the traction rope and moves away from or close to the top end of the main body frame along with the second end of the traction rope.
2. The lifting system of claim 1, wherein the main frame comprises an upper supporting plate, a lower supporting plate and a supporting frame, the supporting frame is fixedly connected to the upper supporting plate and the lower supporting plate, respectively, the lower supporting plate is provided with an opening, so as to form a receiving space with an open lower end, and the load device is driven by the lifting mechanism to extend out of or retract into the main frame through the opening.
3. The lifting system of claim 2, wherein the lifting mechanism further comprises a limiting plate connected to the pulling rope, and a limiting frame matching with the limiting plate is disposed in the main frame, so that the limiting plate moves up and down in the limiting frame under the driving of the pulling rope.
4. The lifting system for small-sized unmanned aerial vehicle of claim 2, wherein the driving device comprises a steering engine, the transmission device comprises a rotary steering wheel, and the steering engine is connected with the rotary steering wheel through a shaft;
the first end of the haulage rope passes through the upper supporting plate and is fixedly connected with the rotary steering wheel, so that the haulage rope is wound on the rotary steering wheel, and the second end of the haulage rope is connected with the load supporting device in a punching, rope threading and knotting mode.
5. The lift system of claim 3, wherein the limiting plate of the lift device further comprises a slide block, and the main frame further comprises a guide rail matching with the slide block, such that the slide block on the limiting plate moves up and down along the guide rail.
6. The lift system of claim 2, further comprising a spring having one end fixedly connected to the upper support plate and the other end fixedly connected to the load support means, wherein the spring has a natural length equal to or greater than the height of the support frame, and wherein the drive mechanism is configured to drive the pull rope to pull the load support means and thereby compress the spring.
7. The lift system for a small-sized unmanned aerial vehicle according to claim 6, further comprising a self-locking structure provided between the load supporting means and the lower support plate for fixing a relative position of the load supporting means on the main body frame.
8. The lift system of claim 7, wherein the latching mechanism comprises a first magnet disposed on a lower surface of the load support device and a second magnet disposed on an upper surface of the lower support plate, wherein the first magnet and the second magnet attract each other when the load support device is close to the lower support plate, so that the load support device and the lower support plate are tightly fixed.
9. The lift system for a small-sized unmanned aerial vehicle according to any one of claims 1 to 8, wherein the load support means comprises a load mounting plate, and a plurality of shock-absorbing elastic bodies are provided on a lower surface of the load mounting plate.
10. The lift system of claim 9, wherein the load support means comprises a three-axis stability enhancement pan coupled to and positioned below the load mounting plate, the plurality of resilient bodies being sandwiched between the three-axis stability enhancement pan and the load mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910238109.1A CN111746813A (en) | 2019-03-27 | 2019-03-27 | Lifting system for small-sized unmanned aerial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910238109.1A CN111746813A (en) | 2019-03-27 | 2019-03-27 | Lifting system for small-sized unmanned aerial vehicle |
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| CN111746813A true CN111746813A (en) | 2020-10-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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