阅读说明：本技术 一种用于测绘的无人机弹起装置 (unmanned aerial vehicle bouncing device for surveying and mapping ) 是由 宋清泉 于 2019-09-02 设计创作，主要内容包括：本发明公开了一种用于测绘的无人机弹起装置,包括：第一加速机构,其至少包括第一弹簧,所述第一弹簧用于为无人机提供第一动量；第二加速机构,其设置于所述第一加速机构的上方,所述第二加速机构至少包括第二弹簧,所述第二弹簧用于在所述第一弹簧为所述无人机提供第一动量后而为所述无人机提供第二动量；其中：所述第二弹簧位于所述第一弹簧的上方,且平行设置；所述无人机用于设置于所述第二加速机构上。(the invention discloses an unmanned aerial vehicle bouncing device for surveying and mapping, which comprises: a first acceleration mechanism comprising at least a first spring for providing a first momentum to the drone; a second acceleration mechanism disposed above the first acceleration mechanism, the second acceleration mechanism including at least a second spring for providing a second momentum to the drone after the first spring provides the first momentum to the drone; wherein: the second spring is positioned above the first spring and is arranged in parallel; the unmanned aerial vehicle is used for setting up in on the second acceleration mechanism.)

1. An unmanned aerial vehicle bouncer for surveying and mapping, comprising:

a first acceleration mechanism comprising at least a first spring for providing a first momentum to the drone;

a second acceleration mechanism disposed above the first acceleration mechanism, the second acceleration mechanism including at least a second spring for providing a second momentum to the drone after the first spring provides the first momentum to the drone; wherein:

the second spring is positioned above the first spring and is arranged in parallel;

The unmanned aerial vehicle is used for setting up in on the second acceleration mechanism.

2. The UAV bounce device for surveying and mapping of claim 1,

the first acceleration mechanism further includes:

A first base for being disposed on an external device;

the first mounting seat comprises two mounting seats; the two first mounting seats are arranged at the front end and the rear end of the first base;

The two first guide columns are arranged between the two first mounting seats and are arranged in parallel;

the first sliding block is sleeved on the two first guide posts and can slide on the first guide posts; wherein:

each first guide column is sleeved with the first spring;

The second acceleration mechanism further includes:

the second base is arranged on the first sliding block;

the two second mounting seats are respectively arranged at the front end and the rear end of the second base;

The two second guide columns are arranged between the two second mounting seats and are arranged in parallel;

the second sliding block is sleeved on the two second guide posts and can slide on the second guide posts; wherein:

the unmanned mechanism is arranged on the second sliding block

each second guide post is sleeved with the second spring;

the first spring is used for applying force to the first sliding block so that the first sliding block slides forwards to drive the second base to enable the unmanned aerial vehicle to obtain a first momentum;

The second spring is used for applying force to the second sliding block to enable the second sliding block to slide forwards so that the unmanned aerial vehicle obtains a second momentum, and the unmanned aerial vehicle flies out of the second sliding block after obtaining the second momentum.

3. The drone pop-up device for surveying and mapping of claim 2, further comprising a first lock-and-release mechanism; the first locking and releasing mechanism is used for locking and releasing the first spring; wherein:

the first lock release mechanism includes:

The clamping plate is fixed on the rear end face of the second base, and a gap is defined between the clamping plate and the rear end face of the second base;

the twisting rod is pivoted to the rear end face of the first base and rotates into the gap or is separated from the gap through rotation; wherein:

when the twisting rod rotates into the gap, the twisting rod limits the second base to limit the first sliding block to move so as to lock the first spring;

when the twisting rod is pulled out of the gap, the twisting rod releases the limitation on the second base, so that the first spring is released.

4. the drone pop-up device for surveying and mapping of claim 3, further comprising a second locking and releasing mechanism for locking and releasing the second spring; wherein:

a rectangular groove with a notch facing the front is formed in the second mounting seat positioned at the rear, and the second sliding block can extend into the rectangular groove;

the second lock release mechanism includes:

a stepped structure formed on a sidewall of the second slider, the stepped structure having an inclined surface;

The spring ejector rod assembly comprises a return spring and an ejector rod which are arranged in the second mounting seat, and the ejector rod is abutted against the inclined surface of the stepped structure under the action of the return spring; wherein:

when the first spring enables the first sliding block to slide forwards and finally be stopped by the first base located in front, the second sliding block enables the inclined surface to press the head of the ejector rod through inertia so as to enable the ejector rod to retract, the ejector rod releases the locking of the second sliding block, the second spring is released to apply force to the second sliding block, and the unmanned aerial vehicle obtains a second momentum.

5. The drone pop-up device for surveying and mapping of claim 4, further comprising a third mounting seat and a third lock-release mechanism, the third mounting seat being fixed on the second slider; a guide groove is formed in the third mounting seat;

a third sliding block is arranged at the bottom of the unmanned aerial vehicle; the third sliding block is arranged in the guide groove;

the third lock release mechanism includes:

a guide hole which is formed from the front end of the third mounting seat to the inside of the third mounting seat;

the moving rod extends into the guide hole from the front end of the third mounting seat, the front end of the moving rod protrudes out of the third mounting seat, and the cross section of the moving rod is square matched with the guide hole; a recess is formed in the upper surface of the moving rod, which is located at one position of the guide hole;

A radial hole which is opened toward the groove bottom of the guide groove and penetrates through the groove bottom and the hole wall of the guide hole;

A first return spring disposed in the guide hole;

The upper end of the stop rod protrudes out of the groove bottom of the guide groove and is used for stopping a stop surface at the rear end of the sliding groove formed in the bottom of the third sliding block;

the second return spring is arranged in the radial hole and used for pushing the stop rod downwards;

The baffle is arranged on the second mounting seat positioned in front; wherein:

when the second spring releases the elastic force to drive the second sliding block to move forwards so that the baffle plate stops the front end of the moving rod, the groove on the moving rod moves to the position below the stopping rod so that the stopping rod moves downwards and the upper end of the stopping rod retracts into the radial hole;

when the moving rod is stopped by the baffle plate and the upper end of the stopping rod retracts into the radial hole, the stopping rod stops the third sliding block, and the unmanned aerial vehicle takes off from the third sliding block by means of inertia.

6. the UAV pop-up device for surveying and mapping of claim 5, wherein the first sliding block comprises two, and the two first sliding blocks are arranged in front and back.

7. the unmanned aerial vehicle bounce device for surveying and mapping of claim 5, wherein the second slider comprises two, two of the second sliders being arranged front and back; the stepped structure is arranged on the second sliding block located at the rear part.

8. the drone pop-up device for surveying and mapping of claim 5, wherein the first spring is interposed between the first slider and the first mount located at the rear, the first spring releasing in compression to provide a first momentum to the drone.

9. the drone pop-up device for surveying and mapping of claim 5, wherein the second spring is interposed between the second slider and the second mount located at the rear, the second spring being released in compression to provide a second momentum to the drone.

Technical Field

The invention relates to a bounce device for an unmanned aerial vehicle.

Background

disclosure of Invention

Aiming at the technical problems in the prior art, the embodiment of the invention provides an unmanned aerial vehicle bouncing device for surveying and mapping.

in order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:

A drone pop-up device for surveying, comprising:

A first acceleration mechanism comprising at least a first spring for providing a first momentum to the drone;

a second acceleration mechanism disposed above the first acceleration mechanism, the second acceleration mechanism including at least a second spring for providing a second momentum to the drone after the first spring provides the first momentum to the drone; wherein:

The second spring is positioned above the first spring and is arranged in parallel;

The unmanned aerial vehicle is used for setting up in on the second acceleration mechanism.

Preferably, the first and second electrodes are formed of a metal,

The first acceleration mechanism further includes:

A first base for being disposed on an external device;

the first mounting seat comprises two mounting seats; the two first mounting seats are arranged at the front end and the rear end of the first base;

The two first guide columns are arranged between the two first mounting seats and are arranged in parallel;

the first sliding block is sleeved on the two first guide posts and can slide on the first guide posts; wherein:

each first guide column is sleeved with the first spring;

The second acceleration mechanism further includes:

the second base is arranged on the first sliding block;

The two second mounting seats are respectively arranged at the front end and the rear end of the second base;

the two second guide columns are arranged between the two second mounting seats and are arranged in parallel;

the second sliding block is sleeved on the two second guide posts and can slide on the second guide posts; wherein:

the unmanned mechanism is arranged on the second sliding block

each second guide post is sleeved with the second spring;

The first spring is used for applying force to the first sliding block so that the first sliding block slides forwards to drive the second base to enable the unmanned aerial vehicle to obtain a first momentum;

the second spring is used for applying force to the second sliding block to enable the second sliding block to slide forwards so that the unmanned aerial vehicle obtains a second momentum, and the unmanned aerial vehicle flies out of the second sliding block after obtaining the second momentum.

preferably, the first and second electrodes are formed of a metal,

the unmanned aerial vehicle bouncing device for surveying and mapping further comprises a first locking and releasing mechanism; the first locking and releasing mechanism is used for locking and releasing the first spring; wherein:

the first lock release mechanism includes:

the clamping plate is fixed on the rear end face of the second base, and a gap is defined between the clamping plate and the rear end face of the second base;

the twisting rod is pivoted to the rear end face of the first base and rotates into the gap or is separated from the gap through rotation; wherein:

When the twisting rod rotates into the gap, the twisting rod limits the second base to limit the first sliding block to move so as to lock the first spring;

when the twisting rod is pulled out of the gap, the twisting rod releases the limitation on the second base, so that the first spring is released.

preferably, the unmanned aerial vehicle bounce device for surveying and mapping further comprises a second locking and releasing mechanism, wherein the second locking and releasing mechanism is used for locking and releasing the second spring; wherein:

A rectangular groove with a notch facing the front is formed in the second mounting seat positioned at the rear, and the second sliding block can extend into the rectangular groove;

the second lock release mechanism includes:

a stepped structure formed on a sidewall of the second slider, the stepped structure having an inclined surface;

the spring ejector rod assembly comprises a return spring and an ejector rod which are arranged in the second mounting seat, and the ejector rod is abutted against the inclined surface of the stepped structure under the action of the return spring; wherein:

when the first spring enables the first sliding block to slide forwards and finally be stopped by the first base located in front, the second sliding block enables the inclined surface to press the head of the ejector rod through inertia so as to enable the ejector rod to retract, the ejector rod releases the locking of the second sliding block, the second spring is released to apply force to the second sliding block, and the unmanned aerial vehicle obtains a second momentum.

Preferably, the unmanned aerial vehicle bounce device for surveying and mapping further comprises a third mounting seat and a third locking and releasing mechanism, and the third mounting seat is fixed on the second sliding block; a guide groove is formed in the third mounting seat;

a third sliding block is arranged at the bottom of the unmanned aerial vehicle; the third sliding block is arranged in the guide groove;

the third lock release mechanism includes:

a guide hole which is formed from the front end of the third mounting seat to the inside of the third mounting seat;

The moving rod extends into the guide hole from the front end of the third mounting seat, the front end of the moving rod protrudes out of the third mounting seat, and the cross section of the moving rod is square matched with the guide hole; a recess is formed in the upper surface of the moving rod, which is located at one position of the guide hole;

a radial hole which is opened toward the groove bottom of the guide groove and penetrates through the groove bottom and the hole wall of the guide hole;

a first return spring disposed in the guide hole;

The upper end of the stop rod protrudes out of the groove bottom of the guide groove and is used for stopping a stop surface at the rear end of the sliding groove formed in the bottom of the third sliding block;

The second return spring is arranged in the radial hole and used for pushing the stop rod downwards;

The baffle is arranged on the second mounting seat positioned in front; wherein:

when the second spring releases the elastic force to drive the second sliding block to move forwards so that the baffle plate stops the front end of the moving rod, the groove on the moving rod moves to the position below the stopping rod so that the stopping rod moves downwards and the upper end of the stopping rod retracts into the radial hole;

when the moving rod is stopped by the baffle plate and the upper end of the stopping rod retracts into the radial hole, the stopping rod stops the third sliding block, and the unmanned aerial vehicle takes off from the third sliding block by means of inertia.

Preferably, the first sliding block comprises two sliding blocks, and the two sliding blocks are arranged in a front-back manner.

preferably, the second sliding blocks comprise two, and the two second sliding blocks are arranged in front of and behind each other; the stepped structure is arranged on the second sliding block located at the rear part.

Preferably, the first spring is interposed between the first slider and the first mount located at the rear, and the first spring is released in a compressed state to provide a first momentum to the drone.

Preferably, the second spring is interposed between the second slider and the second mount located at the rear, and the second spring is released in a compressed state to provide a second momentum for the drone.

compared with the prior art, the unmanned aerial vehicle bouncing device for surveying and mapping disclosed by the invention has the beneficial effects that: the two accelerating mechanisms are used for accelerating the unmanned aerial vehicle, and the two accelerating mechanisms are superposed up and down during transportation, so that the length of the bouncing device in a limited state is inevitably shortened, the bouncing device is convenient to transport, and in addition, the unmanned aerial vehicle is accelerated twice through the two accelerating mechanisms, and the takeoff speed of the unmanned aerial vehicle is further improved.

it is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

The summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments, by way of example and not by way of limitation, and together with the description and claims, serve to explain the inventive embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

fig. 1 is a schematic structural diagram of an unmanned aerial vehicle pop-up device for surveying and mapping according to an embodiment of the present invention (a first spring and a second spring are in a locked state).

fig. 2 is a sectional view taken along line a-a of fig. 1.

fig. 3 is an enlarged view of a portion B of fig. 1.

Fig. 4 is a schematic structural diagram of a drone popping-up device for surveying and mapping according to an embodiment of the present invention (the first spring is released).

Fig. 5 is a cross-sectional view taken along line C-C of fig. 4.

fig. 6 is a schematic structural diagram of a drone popping-up device for surveying and mapping according to an embodiment of the present invention (the second spring is released).

Fig. 7 is an enlarged view of a portion D of fig. 6.

reference numerals:

10-a first acceleration mechanism; 11-a first base; 12-a first mount; 13-a first guide post; 14-a first slide; 15-a first spring; 20-a second acceleration mechanism; 21-a second base; 22-a second mount; 221-rectangular groove; 23-a second guide post; 24-a second slide; 241-inclined plane; 25-a second spring; 30-a first lock release mechanism; 31-a splint; 32-twist lever; 40-a second latch release mechanism; 41-ejector pin; 42-a return spring; 50-a third latch release mechanism; 51-a travel bar; 511-concave; 52-a pilot hole; 53-stop bar; 54-radial holes; 55-first reset spring; 56-second reset spring; 57-baffle; 60-a third mount; 100-unmanned aerial vehicle; 101-a third slider; 102-chute.

Detailed Description

unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

to maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.

as shown in fig. 1 to 7, the disclosed embodiment of the present invention discloses a pop-up device for a surveying and mapping unmanned aerial vehicle, which includes: a first acceleration mechanism 10, a second acceleration mechanism 20, a first lock release mechanism 30, a second lock release mechanism 40, and a third lock release mechanism 50. The first accelerating mechanism 10 in the device at least comprises a first spring 15, and the first spring 15 is used for providing a first momentum for the unmanned aerial vehicle 100; a second acceleration mechanism 20 disposed above the first acceleration mechanism 10, the second acceleration mechanism 20 at least including a second spring 25, the second spring 25 being configured to provide a second momentum for the drone 100 after the first spring 15 provides the first momentum for the drone 100; wherein: the second spring 25 is positioned above the first spring 15 and arranged in parallel; the drone 100 is configured to be disposed on the second acceleration mechanism 20.

It should be noted that: the first acceleration mechanism 10 is used to accelerate the drone 100 so that the drone 100 obtains a first momentum, and the second acceleration mechanism 20 is used to accelerate the drone 100 so that the drone 100 obtains a second momentum, the drone 100 fluctuating after the two momentums are superposed.

The specific structure of each mechanism in the device is as follows:

As shown in fig. 1, the first acceleration mechanism 10 further includes: the first guide post comprises a first base 11, a first mounting seat 12, a first guide post 13 and a first sliding block 14. Specifically, the first chassis 11 is for being disposed on an external device; the first mounting seat 12 includes two; the two first mounting seats 12 are arranged at the front end and the rear end of the first base 11; the number of the first guide columns 13 is two, the two first guide columns 13 are arranged between the two first installation seats 12, and the two first guide columns 13 are arranged in parallel; the first sliding block 14 is sleeved on the two first guide posts 13 at the same time and can slide on the first guide posts 13; each first guiding column 13 is sleeved with a first spring 15.

As shown in fig. 1, the second acceleration mechanism 20 further includes: a second base 21, a second mounting seat 22, a second guide post 23, and a second slider 24. Specifically, the second base 21 is disposed on the first slider 14; the number of the second mounting seats 22 is two, and the two second mounting seats 22 are respectively arranged at the front end and the rear end of the second base 21; the number of the second guide posts 23 is two, the two second guide posts 23 are both arranged between the two second mounting seats 22, and the two second guide posts 23 are arranged in parallel; the second sliding block 24 is simultaneously sleeved on the two second guide posts 23 and can slide on the second guide posts 23; wherein: the drone 100 is disposed on the second slider 24; each second guide post 23 is sleeved with a second spring 25; the first spring 15 is used for applying force to the first slider 14 so that the first slider 14 slides forwards to drive the second base 21 and make the unmanned aerial vehicle 100 obtain a first momentum; the second spring 25 is used for applying a force to the second slider 24 to slide the second slider 24 forward so that the drone 100 obtains a second momentum, and flies off the second slider 24 after obtaining the second momentum.

As shown in fig. 1 in conjunction with fig. 4, the first lock release mechanism 30 is used to lock and release the first spring 15; the first lock release mechanism 30 includes: a clamping plate 31 and a twist rod 32. Specifically, the clamping plate 31 is fixed on the rear end surface of the second base 21, and defines a gap with the rear end surface of the second base 21; the twisting rod 32 is pivoted to the rear end face of the first base 11, and the twisting rod 32 rotates into the gap or is pulled out of the gap through rotation; wherein: when the twisting rod 32 rotates into the gap, the twisting rod 32 limits the second base 21 to limit the movement of the first sliding block 14 so as to lock the first spring 15; when the twisting rod 32 is disengaged from the slit, the twisting rod 32 releases the restriction of the second base 21 and releases the first spring 15.

As shown in fig. 1 in conjunction with fig. 2 and 5, the second lock release mechanism 40 is used to lock and release the second spring 25; specifically, a rectangular groove 221 with a notch facing the front is formed in the second mounting seat 22 located at the rear, and the second slider 24 can extend into the rectangular groove 221; the second lock release mechanism 40 includes: a stepped structure and a spring ram 41 assembly. A stepped structure is formed on the side wall of the second slider 24, the stepped structure having a slope 241; the spring push rod 41 assembly comprises a return spring 42 arranged in the second mounting seat 22 and a push rod 41, and the push rod 41 is abutted against the inclined surface 241 of the stepped structure under the action of the return spring 42; wherein: as shown in fig. 5, when the first spring 15 makes the first slider 14 slide forward and finally is stopped by the first base 11 located in front, the second slider 24 makes the inclined surface 241 press the head of the push rod 41 by inertia to retract the push rod 41, so that the push rod 41 releases the lock on the second slider 24 and the second spring 25 is released to apply a force to the second slider 24 to make the unmanned aerial vehicle 100 obtain the second momentum.

as shown in fig. 1 in combination with fig. 3 and 7, the unmanned aerial vehicle pop-up device for surveying and mapping further includes a third mounting seat 60 and a third locking and releasing mechanism 50, wherein the third mounting seat 60 is fixed on the second sliding block 24; the third mounting base 60 is provided with a guide groove; the bottom of the unmanned aerial vehicle 100 is provided with a third sliding block 101; the third slider 101 is arranged in the guide groove; the third lock release mechanism 50 includes: a guide hole 52, a moving rod 51, a radial hole 54, a first return spring 55, a stop rod 53, a second return spring 56, and a stopper 57. The guide hole 52 is opened from the front end of the third mounting base 60 to the inside of the third mounting base 60; the movable rod 51 extends into the guide hole 52 from the front end of the third mounting seat 60, the front end of the movable rod 51 protrudes out of the third mounting seat 60, and the section of the movable rod 51 is square matched with the guide hole 52; a recess 511 is formed on the upper surface of the movable rod 51 at a position of the guide hole 52; the radial hole 54 opens toward the bottom of the guide groove and penetrates the bottom of the guide groove and the wall of the guide hole 52; the first return spring 55 is disposed in the guide hole 52; the stop rod 53 is arranged in the radial hole 54, and the upper end of the stop rod 53 protrudes out of the groove bottom of the guide groove to be used for stopping the stop surface of the rear end of the sliding groove 102 arranged at the bottom of the third sliding block 101; a second return spring 56 is disposed in the radial hole 54 for pushing the stop rod 53 downward; the baffle 57 is arranged on the second mounting seat 22 positioned in front; wherein: as shown in fig. 7, when the second spring 25 releases the elastic force to drive the second slider 24 to move forward so that the baffle 57 stops the front end of the moving rod 51, the groove on the moving rod 51 moves to the lower side of the stop rod 53 so that the stop rod 53 moves downward and the upper end of the stop rod 53 retracts into the radial hole 54; when the moving rod 51 is stopped by the baffle 57 and the upper end of the stop rod 53 is retracted into the radial hole 54, the stop rod 53 releases the stop of the third slider 101, and the drone 100 takes off from the third slider 101 by inertia.

in some preferred embodiments, the first sliding block 14 includes two, two first sliding blocks 14 are arranged in front and back; the second slide block 24 comprises two, and the two second slide blocks 24 are arranged in front and back; the stepped structure is arranged on the second slider 24 positioned at the rear part; a first spring 15 is interposed between the first slider 14 and the first mounting seat 12 located at the rear, and the first spring 15 is released in a compressed state to provide a first momentum for the drone 100; a second spring 25 is interposed between the second slider 24 and the second mount 22 located at the rear, and the second spring 25 is released in a compressed state to provide a second momentum to the drone 100.

the following describes the working principle of the above-mentioned pop-up device and thereby illustrates the advantageous effects of the present invention:

Before transporting the pop-up device, the first acceleration mechanism 10 and the second acceleration mechanism 20 are overlapped as shown in fig. 1, that is, the first spring 15 is contracted by the first lock release mechanism 30, and the second spring 25 is extended by the second lock release mechanism 40, and at this time, the length of the pop-up device is small for easy transportation.

When the unmanned aerial vehicle 100 needs to be popped up, the twist lever 32 is rotated to make the twist lever 32 get out of the gap formed by the clamp plate 31, at this time, as shown in fig. 4, the first spring 15 is released, the first spring 15 pushes against the first slider 14 to accelerate the second acceleration mechanism 20 and the unmanned aerial vehicle 100 for the first time, when the first slider 14 collides with the first mounting seat 12 located in front, as shown in fig. 6, the second lock release mechanism 40 releases the second spring 25, the second spring 25 is a tension spring, which pulls the second slider 24 to drive the second slider 24 and the unmanned aerial vehicle 100 to accelerate, and when the moving rod 51 of the third lock release mechanism 50 is stopped by the baffle 57, the unmanned aerial vehicle 100 takes off by inertia.

the invention has the beneficial effects that:

The two accelerating mechanisms are used for accelerating the unmanned aerial vehicle 100, and are overlapped up and down during transportation, so that the length of the bouncing device in a limited state is inevitably shortened, the bouncing device is convenient to transport, and in addition, the two accelerating mechanisms are used for accelerating the unmanned aerial vehicle 100 twice, so that the takeoff speed of the unmanned aerial vehicle 100 is improved.

moreover, although exemplary embodiments have been described herein, the scope of the present invention includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above-described embodiments, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

the above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.