CN114889838B

CN114889838B - Unmanned aerial vehicle take-off and landing platform for electromagnetic emission

Info

Publication number: CN114889838B
Application number: CN202210342204.8A
Authority: CN
Inventors: 彭高亮; 程枫; 金康; 刘世伟; 赵本启; 刘峰翼
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-12-02
Anticipated expiration: 2042-03-31
Also published as: CN114889838A

Abstract

The invention relates to an unmanned aerial vehicle take-off and landing platform for electromagnetic emission, which comprises: a mobile chassis by which the take-off and landing platform can be transported to a designated location; a first platform disposed on the mobile chassis; the electromagnetic transmitting device is arranged on the first platform and can be erected to a preset angle relative to the first platform; a second platform switchable between two states, one above and one level with the first platform, wherein in the first state the second platform is above the first platform and a gap between the second platform and the first platform is used for accommodating the unmanned aerial vehicle; in a second state, the second platform is moved longitudinally to be adjacent to and flush with the first platform. By adopting the scheme, the structure is modular and compact. The upper and lower platforms can be separated and recombined. And each module is convenient to expand, debug and maintain.

Description

Unmanned aerial vehicle take-off and landing platform for electromagnetic emission

Technical Field

Along with the development of national defense technology, the military application of unmanned aerial vehicles is more and more comprehensive, and unmanned aerial vehicle systems formed by reconnaissance combat unmanned aerial vehicles play more and more important roles in modern wars. Fixed wing unmanned aerial vehicle is the most commonly used equipment in unmanned reconnaissance, operation, and middle-size and small-size fixed wing unmanned aerial vehicle relies on fixed airport take off and land more at present, can't adapt to complicated battlefield environment and nimble operation instruction. Because traditional unmanned aerial vehicle takes off and land through building the airport runway and realizing, this just makes fixed wing unmanned aerial vehicle take off and land extremely inconvenient in the complex environment, has brought very big puzzlement for unmanned aerial vehicle's military application. And the future trend of unmanned aerial vehicle cluster battle puts forward higher requirements on unmanned aerial vehicle take-off and landing platform equipment. In the traditional method of running, taking off and landing, it takes too long to form an unmanned aerial vehicle group to achieve the purpose of multi-machine combination cooperation, which causes great difficulty in quickly forming the unmanned aerial vehicle group.

In order to solve the existing problems, for example, chinese patent publication No. CN112158350A discloses a single-launch-port continuous launching device of a small-sized fixed-wing unmanned aerial vehicle, which comprises a rotary bullet disk assembly and a launch base assembly, wherein the rotary bullet disk assembly is installed at the rear end of the launch base assembly. During operation, at first rotatory bullet dish is put into unmanned aerial vehicle in the draw-in groove in proper order to accomplish unmanned aerial vehicle's loading. The launching base finishes energy storage, the unmanned aerial vehicle aiming at the launching port is ejected out, and meanwhile, the rotary bearing disc rotates for a certain angle to aim the next unmanned aerial vehicle at the pre-launching port. At this moment, the whole launching pad is consistent with the state during the first launching, a motion cycle is completed, and all modules move repeatedly until the unmanned aerial vehicle is completely launched and then the next loading is carried out. The device has solved the problem that fixed wing unmanned aerial vehicle launches fast under the complex environment and forms the cluster, but the device is only applicable to small-size reconnaissance type unmanned aerial vehicle. Once the problems of endurance, mounting and the like are considered, the volume and the weight of the unmanned aerial vehicle tend to increase, and the unmanned aerial vehicle cannot be used continuously.

At present, there is not land-based medium-sized fixed wing unmanned aerial vehicle device that takes off and land fast at home and abroad, for this reason, a medium-sized fixed wing unmanned aerial vehicle platform that takes off and land for electromagnetic emission has been designed, can flexibly maneuver and accomplish the automation of medium-sized fixed wing unmanned aerial vehicle platform that takes off and land fast in the complex environment and build, electromagnetic emission and electromagnetic obstruction make unmanned aerial vehicle's transmission more rapid with retrieving simultaneously, the length of runway has also been shortened greatly, the adaptability of platform to the topography has been strengthened taking off and land, also be favorable to taking off and land the concealment of platform simultaneously. The device has promoted the constitution efficiency and the input scope of medium-sized fixed wing unmanned aerial vehicle crowd greatly, has realistic meaning and good application prospect, to promoting the army to equip scientific and technological, automatic level have great help, have higher research and production value.

Disclosure of Invention

The invention aims to provide an integrated take-off and landing platform of an unmanned aerial vehicle combined with an electromagnetic transmitting device, which is mainly used for long-distance launching and land-based take-off and landing of a medium-sized fixed wing unmanned aerial vehicle and is convenient for more flexibly realizing field take-off and landing and cluster combat tasks of the unmanned aerial vehicle. The main effect of this kind of unmanned aerial vehicle platform of taking off and land is that realize open-air transmission and retrieve unmanned aerial vehicle, realize border tour and fight. The carrier vehicle is used as a transport carrier, battlefield deployment can be rapidly and flexibly realized, and the maneuverability of a military unmanned aerial vehicle cluster and the realization of a long-distance delivery task are guaranteed.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

an unmanned aerial vehicle take-off and landing platform for electromagnetic emissions, comprising:

a mobile chassis by which the take-off and landing platform can be transported to a designated location;

a first platform disposed on the mobile chassis;

the electromagnetic transmitting device is arranged on the first platform and can be erected to a preset angle relative to the first platform;

a second stage switchable between two states of being located above and flush with the first stage,

when the unmanned aerial vehicle is in the first state, the second platform is located above the first platform, and a gap between the second platform and the first platform is used for accommodating the unmanned aerial vehicle;

in a second state, the second platform moves along the longitudinal direction to be adjacent to and flush with the first platform.

In one embodiment, the electromagnetic emitting device is hinged to the first platform body and can be erected at one end to an angle under the action of the erecting device.

In one embodiment, the first platform further comprises a posture adjustment mechanism disposed between the first platform body and the mobile chassis for adjusting the posture of the first platform relative to the mobile chassis.

In one embodiment, the attitude adjusting device comprises a plurality of electric cylinders, and the electric cylinders enable the moving chassis and the first platform to form a parallel mechanism.

In one embodiment, the first platform further comprises a first laterally expanding platform connected to both sides of the first platform body by a first folding mechanism, such that the first laterally expanding platform can be vertically suspended and horizontally deployed with respect to the first platform body.

In one embodiment, the first platform further comprises a foot seat for fixing and locking the upper platform during transportation, the foot seat comprises a supporting part and a cover body, the supporting part comprises a groove, and the cover body is hinged with the supporting part, so that the cover body can be switched between two states of covering the groove and exposing the groove.

In one embodiment, the second platform comprises a second platform main body, fixed legs and telescopic legs, wherein the fixed legs are used for fixing the second platform on the first platform, the fixed legs are arranged on two sides of the second platform main body and can be inserted into the grooves of the foot seats of the first platform; the telescopic supporting legs are symmetrically arranged on two sides of the second platform main body and can be stretched in the vertical direction, and the telescopic range in the vertical direction can enable the second platform to be in contact with the ground and other foundations when the second platform is in the first state and the second state.

In one embodiment, a transverse telescopic device is provided between each pair of symmetrical telescopic legs, by which the telescopic legs are movable in transverse direction with respect to the second platform body.

In one embodiment, the second platform further comprises a second transversely expanding platform connected to both sides of the second platform body by a second folding mechanism, so that the second transversely expanding platform can be vertically suspended and horizontally unfolded with respect to the second platform body.

In one embodiment, when the second platform is in the first state, the second laterally extending platform and the first laterally extending platform are both in an upright position and are in contact or at a small distance.

The invention has the following effects:

the erecting device capable of realizing quick assembly and disassembly provided by the invention has the following advantages:

1. the function integration and the automation degree are higher. The invention integrates the taking-off and landing of the unmanned aerial vehicle and transportation, and the taking-off and landing of the single vehicle are realized by expansion, so that the single vehicle has the capability of carrying the unmanned aerial vehicle to execute reconnaissance and battle missions.

2. The method has expandability. The invention can realize the construction of a large platform by separating, splicing, folding and unfolding.

3. Modular design and compact structure. The upper and lower platforms can be separated and recombined. And each module is convenient to expand, debug and maintain. The invention makes full use of the reasonable structural design of each part, has larger folding-unfolding ratio, and can ensure the rationality of functions and the structural compactness of road transportation.

4. The throwing range of the unmanned aerial vehicle group is enlarged. The invention can meet the take-off and landing requirements of the unmanned aerial vehicle in a complex outdoor environment.

Drawings

FIG. 1 is a state diagram of the transportation of the lifting platform of the present invention;

FIG. 2 is a schematic view of the landing platform of the present invention deployed to a working state;

FIG. 3 is a schematic diagram illustrating a second platform of the landing platform of the present invention being flush with the first platform;

fig. 4 is a schematic diagram of the launch state of the drone in accordance with the present invention;

FIG. 5 is a schematic view of the landing state of the UAV of the present invention;

FIG. 6 is a top view of the first platform of the present invention;

FIG. 7 is a side view of a first platform of the present invention;

FIG. 8 is a schematic view of a first folding mechanism of the present invention; wherein A is an appearance diagram; b is a cross-sectional view

FIG. 9 is a structural view of the stand of the present invention, wherein A is a cover opened state; b is the closing state of the cover body;

FIG. 10 is a top view of the mobile base of the present invention;

FIG. 11 is a side view of a second platform of the present invention;

FIG. 12 is another angled side view of the second platform of the present invention;

FIG. 13 is a schematic view of the locking mechanism of the present invention;

FIG. 14 is a schematic view of a first state of the third folding mechanism according to the present invention;

FIG. 15 is a schematic view of a third folding mechanism according to the present invention in a second state;

FIG. 16 is a third state diagram of the third folding mechanism of the present invention

FIG. 17 is a view of the structure of the telescoping leg of the present invention, wherein A is an extended view; b is a sectional view A; c is a retraction state diagram.

Detailed Description

In order to make the technical solutions and advantages of the present application more clear, the present application is described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, the present invention provides a drone 400 for electromagnetic emissions, comprising:

a moving chassis 100 through which the lifting platform can be transported to a designated location;

a first platform 200, the first platform 200 being disposed on the moving chassis 100;

an electromagnetic emitting device 210 disposed on the first platform 200, wherein the electromagnetic emitting device 210 can be erected to a predetermined angle with respect to the first platform 200;

a second stage 300, the second stage 300 being switchable between two states of being located above the first stage 200 and being flush with the first stage 200,

wherein, in the first state, the second platform 300 is located above the first platform 200, and a gap between the second platform 300 and the first platform 200 is used for accommodating the unmanned aerial vehicle 400;

in the second state, the second platform 300 is moved to be adjacent to and flush with the first platform 200 in the longitudinal direction.

By adopting the scheme, the unmanned aerial vehicle 400 is lifted and landed and transported, and the lifting and landing are realized by the single vehicle expansion, so that the single vehicle has the capability of carrying the unmanned aerial vehicle 400 to execute reconnaissance and battle missions. Moreover, the structure is compact due to modular design. The upper and lower platforms can be separated and recombined. And each module is convenient to expand, debug and maintain. The reasonable in structure design of make full use of each part has great aspect ratio, can guarantee the rationality of function, can guarantee the compact structure nature of highway transportation again.

In one embodiment, the first state is a transportation state, that is, in the action state of the mobile chassis 100, the unmanned aerial vehicle 400 takes off and lands the platform in a moving state. The second state is the transmission state, equips the state including the transmission, and unmanned aerial vehicle 400 installs the in-process at the launcher and afterwards promptly, still including the transmission completion state, and unmanned aerial vehicle 400 finishes promptly simultaneously from the launcher transmission promptly.

In one embodiment, the electromagnetic emitting device 210 is hinged to the first platform body 201 and can be erected at one end to an angle, e.g., 10 ° -20 °, by an erecting device 211, and the fixed wing drone 400 can be secured to the electromagnetic emitting device 210 and can be erected at an elevation angle with the electromagnetic emitting device 210 for emission. The raising device 211 is, for example, a hydraulic cylinder.

In one embodiment, the first platform 200 further comprises a posture adjustment mechanism 220, the posture adjustment mechanism 220 is disposed between the first platform body 201 and the mobile chassis 100 for adjusting the posture of the first platform 200 relative to the mobile chassis 100. In one embodiment, the posture adjustment mechanism 220 includes a plurality of electric cylinders that make the mobile chassis 100 and the first platform 200 constitute a parallel mechanism. In one embodiment, the moving chassis 100 and the posture adjustment mechanism 220 are connected through a guide rail 221 and a slider 222, and posture adjustment with three degrees of freedom in the horizontal direction is realized under the driving of a driving device (such as a transverse electric cylinder 223 and a longitudinal electric cylinder 224). With this arrangement, the position of the first platform 200 relative to the mobile chassis 100 can be adjusted by the action of the posture adjusting mechanism 220, and thus precise alignment of the first platform 200 and the second platform 300 can be achieved.

In one embodiment, the first platform 200 further comprises a first lateral expansion platform 230, and the first lateral expansion platform 230 is connected to both sides of the body of the first platform 200 through a first folding mechanism 240, so that the first lateral expansion platform 230 can be vertically suspended and horizontally unfolded with respect to the body of the first platform 200. Wherein, the first transversely-extending platform 230 can be suspended during transportation, thus saving the peripheral space of the platform, and does not interfere with the second platform 300, and can also be unfolded by 90 ° by the first folding mechanism 240 during the operation of the platform, so as to extend the transverse dimension of the platform.

In one embodiment, as shown in fig. 8, the first folding mechanism 240, which is uniformly distributed along the longitudinal direction of the platform for connecting the first platform body 201 and the first transverse expansion platform 230, comprises a fixed member 241, a rotating member 242, a swing arm 243, a connecting rod 244 and a bending driving member, wherein the fixed member 241 comprises two separate supporting arms, the rotating member 242 comprises two separate movable arms, and the movable arms are hinged with the supporting arms; the section of the swing arm 243 is a T-shaped structure, the far end of the vertical arm is a first end, the two ends of the cross arm are respectively a second end and a third end, the first end is hinged with the discrete support arm, the second end is hinged with one end of the connecting rod 244, and the third end is hinged with the bending driving piece; the other end of the link 244 is hinged to the boom. In this way, the third end of the swing arm 243 is driven by a bending driving element (e.g., a hydraulic cylinder) to rotate around the first end, the second end drives the connecting rod 244 to move along with the third end, and the other end of the connecting rod 244 drives the movable arm to rotate relative to the supporting arm, so that the movable arm can be folded at 90 °, the fixed element 241 is fixedly connected to the first platform main body 201, and the rotating element 242 is connected to the first laterally extending platform 230, so that the first laterally extending platform 230 rotates relative to the first platform main body 201, and the first laterally extending platform 230 is switched from the vertical state to the horizontally extending state.

In one embodiment, the first platform 200 further comprises a first telescoping leg 250, the first telescoping leg 250 being secured below the first platform body 201.

In one embodiment, the first platform 200 further comprises an expansion platform lifting device 260, the lifting device 260 being used to adjust the first laterally expanding platform 230 in an upright position to a predetermined height position. Specifically, the lifting device 260 is disposed between the first transversely extending platform 230 and the first turnover mechanism 240. With such an arrangement, the height of the first laterally expanding platform 230 can be adjusted flexibly to suit different working steps when it is placed vertically, for example, the lifting device 260 can be used to increase the distance from the ground to suit the off-road requirement, and the first laterally expanding platform 230 needs to be lowered to a specific position to prevent interference when the second telescopic leg 320 of the second platform 300 is extended laterally.

In one embodiment, the first platform 200 further comprises a foot 270 for securely locking the second platform 300 during transportation, the foot 270 comprises a supporting portion 271 and a cover 272, the supporting portion 271 comprises a recess 273, and the cover 272 is hinged to the supporting portion 271, such that the cover 272 can be switched between two states of covering the recess 273 and exposing the recess 273. The recess 273 is used to receive and fix the fixing leg 310 of the second platform 300, for example, the shape of the recess 273 is the same as the outer shape of the fixing leg 310, and the size of the recess 273 is matched, so that the fixing leg 310 can be placed in the recess 273 and can be relatively tightly fitted. In one embodiment, the cover 272 includes an insertion portion that is inserted into the slot of the fixing leg 310 during the process of the fixing leg 310 entering the recess 273. With such a scheme, a limit effect can be provided for the fixed leg 310, and the cover 272 and the support portion 271 form a triangular support structure, so that the fixed leg 310 can be stably supported and fixed. The cover 272 covers the recess 273 when the landing platform is set up to ensure the integrity of the runway surface. In one embodiment, the recessed grooves 273 are preferably tapered grooves.

In one embodiment, the second platform 300 comprises a second platform main body 301, a fixing leg 310 and a second telescopic leg 320, wherein the fixing leg 310 is used for fixing the second platform 300 on the first platform 200, specifically, the fixing leg 310 is disposed on both sides of the second platform main body 301 and can be inserted into the groove 273 of the foot seat 270 of the first platform 200, and preferably, the fixing leg 310 is provided with a slot for limiting the insertion of the cover 272 of the foot seat 270. The second telescopic legs 320 are symmetrically arranged on two sides of the second platform main body 301 and can be extended and retracted in the vertical direction, and the extension range in the vertical direction is such that the second telescopic legs 320 can be in contact with the ground and other foundations when the second platform 300 is in the first state and the second state; and preferably, a lateral telescopic device 321 is provided between each pair of symmetrical second telescopic legs 320, by which the second telescopic legs 320 can move in the lateral direction with respect to the second platform body 301, and the lateral movement range of the second telescopic legs 320 is from inside the lateral edge of the second platform 300 to outside the lateral edge. Preferably, the second telescopic leg 320 is a three-or more-section arm structure, wherein the length of each section of the arm structure is smaller than that of the fixed leg 310.

In one embodiment, the second telescoping leg 320 may be positioned within the first platform, the second platform's laterally extending platform 230/330, the drone retrieval parking platform 370. Specifically, the second telescopic leg 320 is fixed and extended to be a supporting structure of the expansion platform 230/330 and the recycling parking platform 370 when the platform is folded and fixed in the space formed between the

expansion platforms

230 and 330 and the recycling parking platform 370 and the platform body when the landing platform is unfolded. By adopting the scheme, the second telescopic supporting leg 320 can be placed by fully utilizing the existing space, the space is saved, and the structure is miniaturized.

In one embodiment, the lateral telescopic device 321 may comprise, for example, a sleeve 322 and a pair of telescopic shafts 323, the sleeve 322 is fixed at the bottom of the second platform body 301, the pair of telescopic shafts 323 are respectively inserted into the sleeve 322 from both sides of the sleeve 322, and the distal ends of the telescopic shafts 323 are fixed with the second telescopic leg 320.

In one embodiment, the second platform 300 further comprises a second transversely extending platform 330, and the second transversely extending platform 330 is connected to both sides of the second platform 300 body through a second folding mechanism 350. So that the second laterally expanding platform 330 can be in a vertically suspended state and a horizontally deployed state with respect to the second platform 300 body. The second transverse expansion platform 330 may be in a suspended state during transportation, which saves the peripheral space of the platform, and may also be unfolded by 90 ° by the second folding mechanism 350 during the platform operation, so as to expand the transverse dimension of the platform.

In one embodiment, the range of lateral movement of the telescoping shaft 323 is within the lateral edges of the deployed first laterally expanding platform 330.

In one embodiment, as shown in fig. 1, when the second platform 300 is in the first state, the first lateral expansion platform 330 and the first lateral expansion platform 230 are both in a vertical position, and are in contact with each other or are at a small distance, for example, at a distance less than 3 mm, or less than 1 mm, specifically, the extended platform lifting device 260 moves the lateral expansion platform in the vertical position upward to be in contact with the first lateral expansion platform 330, so that the whole unmanned aerial vehicle 400 lifting platform forms a box structure, and the second lateral expansion platform 330 covers the platform from above, the first lateral expansion platform 230, and the first lateral expansion platform 330 from the side. In one embodiment, the longitudinal tail end of the second platform main body 301 is further provided with a baffle 390, and the baffle 390 and the longitudinal tail end of the mobile chassis 100 together shade the longitudinal tail side of the unmanned aerial vehicle 400 taking off and landing platform. By adopting the scheme, a box-type structure is formed during transportation, and a box structure does not need to be arranged independently to seal the platform. And, can practice thrift the horizontal size when lift platform transports, can guarantee again that there is an enough platform size at lift platform during operation, and need not to set up one alone and hold the box and seal the part, played effects such as dustproof, rain-proof.

In one embodiment, the second folding mechanism 350 is uniformly distributed along the longitudinal direction of the platform for connecting the platform and the transversely extending platform, and the second folding mechanism 350 may be the same as the first folding mechanism 240, for example, also includes a fixed member 241, a rotating member 242, a swing arm 243, a connecting rod and a bending driving member, wherein the fixed member 241 includes two discrete supporting arms, the rotating member 242 includes two discrete movable arms, and the movable arms are hinged to the supporting arms; the section of the swing arm 243 is a T-shaped structure, the far end of the vertical arm is a first end, the two end parts of the cross arm are respectively a second end and a third end, the first end is hinged with the discrete support arm, the second end is hinged with one end of the connecting rod, and the third end is hinged with the bending driving piece; the other end of the connecting rod is hinged with the movable arm. In this way, the third end of the swing arm 243 is driven by a bending driving element (e.g., an oil cylinder) to rotate around the first end, the second end drives the connecting rod to move along with the first end, and the other end of the connecting rod drives the movable arm to rotate relative to the supporting arm, so that the movable arm can be turned over by 90 °, the fixed element 241 is fixedly connected to the second platform main body 301, and the rotating element 242 is connected to the first lateral expansion platform 330, so that the first lateral expansion platform 330 rotates relative to the second platform main body 301, and the first lateral expansion platform 330 is switched from the vertical state to the horizontal expansion state.

In one embodiment, the secondary platform 300 further comprises a drone 400 recovery parking platform 370, located at the end of the secondary platform 300 and symmetrically placed. The foldable platform is fixed on the inner side of the first transverse expanding platform 330 in a folded state during transportation, and is folded twice by 180 degrees through the third folding mechanism 380 to form a parking platform during operation.

In one embodiment, the unmanned aerial vehicle 400 retrieval parking platform 370 comprises a first part 371 and a second part 372, wherein the first part 371 is hinged to the second lateral expansion platform 330 and is switchable between a state in which the upper surface is horizontally aligned with respect to the second lateral expansion platform 330 and a state in which the upper surface is hidden under the second lateral expansion platform 330, and the second part 372 is switchable between a state in which the upper surface of the first part 371 is horizontally aligned and the upper surface is proximate.

In one embodiment, the third folding mechanism 380 includes a first linear driving element 381, a first connecting rod 382 and a second connecting rod 383, which are disposed between the first lateral expanding platform 330 and the first part 371, wherein one end of the first linear driving element 381 is hinged to one end of the first lateral expanding platform 330 close to the second platform main body 301, the other end of the first connecting rod 382 is hinged to one end of the second connecting rod 383, the other end of the first connecting rod 382 is hinged to one end of the first lateral expanding platform 330 away from the second platform main body 301, and the other end of the second connecting rod 383 is hinged to the first part 371.

The third folding mechanism 380 further includes a second linear driving element 384, a third connecting rod 386 and a first lever 385, which are disposed between the first and

second members

371 and 372, wherein one end of the second linear driving element 384 is hinged to the first member 371 near the first transversal expansion platform 330, and the other end of the second linear driving element 384 is hinged to one end of the first lever 385. The middle of the first lever 385 is hinged to the other end of the first part 371, the other end of the first lever 385 is hinged to one end of the third link 386, and the other end of the third link 386 is hinged to one end of the second part 372 close to the first part 371.

In one embodiment, the first section 371 is disposed parallel to the second laterally extending platform 330 when the first linear drive 381 is in the retracted state. Preferably, in this state, the hinged end (i.e. the other end) of the first linear actuator 381 and the first and

second links

382 and 383 is located inside the triangle formed by the three hinged ends of the first linear actuator 381, the first link 382 and the second link 383 and the first lateral expansion platform 330 and the first part 371. In a preferred embodiment, in this state, a line connecting a hinge point of the second link 383 with the first part 371 and a hinge point of the first part 371 and the second part 372 is perpendicular to the second link 383 at an angle of 80 ° to 100 °, preferably 90 °. With this configuration, when the first member 371 is unfolded, the direction of the force applied by the first linear driving member 381 to the first member 371 by the second link 383 is approximately tangent or tangent to the rotation direction, and the acting force of the cylinder can be fully exerted.

In one embodiment, the first and second

linear drives

381, 384 may be pneumatic cylinders, electric cylinders, hydraulic cylinders, or the like.

In one embodiment, the hinge point of the second link 383 to the first part 371 is located closer to the center of the first part 371 than the hinge point of the second linear drive 384 to the first part 371. With such a scheme, the moment arm of the acting force for driving the first part 371 to rotate is larger, so that the driving force for driving can be greatly saved, and further the acting force on the hinge point can be avoided, and the damage to the hinge structure is avoided. For example, the arm is longer than twice the arm length of the second element 372 at the edge of the first element 371, and the same weight requires less than half the force generated by the first linear actuator 381.

In one embodiment, the first lever 385 includes a straight portion 3851 and an arc portion 3852, wherein the connection between the straight portion 3851 and the arc portion 3852 is hinged to the other end of the first member 371, one end of the straight portion 3851 is hinged to the second linear driving member 384, and one end of the arc portion 3852 is hinged to the third link 386. Wherein, the line of the two hinge points of the arc-shaped part 3852 is approximately vertically arranged with the straight rod part 3851, and is preferably arranged at 90-110 degrees. With this arrangement, the force of the second linear drive 384 is better transmitted to the second member 372 and is structurally stronger.

Also in one embodiment, it is preferable that the curved portion 3852 has a substantially semicircular shape, and a hinge point of the middle portion of the first lever 385 is spaced apart from a hinge point of the first and

second members

371 and 372 by a value substantially equal to a radius of the semicircular shape. In one embodiment, the hinge point of first section 371 and second section 372 is located on a top surface of first section 371 and second section 372. With this arrangement, it is ensured that the first part 371 and the second part 372 can be close to each other in the folded state and can be close to each other in the unfolded state, the first lever 385 does not interfere with the first part 371 or the second part 372, and particularly, the arc portion 3852 can avoid the hinge point between the first part 371 and the second part 372.

In one embodiment, the hinged structure of the first lateral expansion platform 330 and the first section 371 comprises a first hinged arm 332 disposed on the first lateral expansion platform 330 and a second hinged arm 373 disposed on the first section 371, wherein the first hinged arm 332 is disposed substantially perpendicular from a lower surface of the first lateral expansion platform 330, the second hinged arm 373 is disposed substantially perpendicular from a lower surface of the first section 371, and the hinge points of the first hinged arm 332 and the second hinged arm 373 are disposed at a side protruding from the second lateral expansion platform 330, i.e., the first section 371. Moreover, a shield 333 extends longitudinally outwardly from a surface of the first laterally extending platform 330, and when the first member 371 is deployed relative to the first laterally extending platform 330, the shield 333 shields the gap between the first member 371 and the first laterally extending platform 330. With this arrangement, the location of the hinge point ensures that the first section 371 can be fully opened and have a coplanar upper surface relative to the first lateral expansion platform 330.

In one embodiment, a locking mechanism 340 is provided at the junction of the first/second laterally expanding platform 230/330 and the first/second platform body 201/301, the working locking mechanism 340 includes a nose 341 with a hole and a rod portion 342 insertable into the nose 341, the rod portion 342 being insertable into the nose 341 (e.g., in a working position) or disengageable from the nose 341 (e.g., in a non-working position) by a powered cylinder 343, wherein the nose 341 is located on one of the expanding platform and the platform body and the rod portion 342 and the powered cylinder 343 are located on the other of the expanding platform 230/330 and the platform body 201/301.

In one embodiment, the locking mechanism 340 is also disposed at the connection location of the first platform 200 and the second platform 300.

In one embodiment, as shown in fig. 17, the first telescopic leg 250 and the second telescopic leg 320 mainly include an upper casing 251, a lower casing 252 and an adjustable supporting foot 253, wherein a position-limiting locking hole 255 is opened at a position corresponding to the upper casing 251 and the lower casing 252, and a nylon sliding block 254 is sleeved on the lower casing 252 to facilitate sliding connection between the lower casing 252 and the upper casing 251. During transportation, the lower sleeve 252 is put into the upper sleeve 251 and limited by a hole clamping screw; when horizontal extension platform and unmanned aerial vehicle retrieve and park the platform and open, remove spacingly, lower sleeve pipe 252 stretches out, and supporting mechanism extension this moment is spacing with calorie hole 255 screw. The adjustable supporting foot 253 is composed of a screw rod and a nut, the nut is fixed on the lower sleeve 252, and the stud can be rotated to conduct fine adjustment to meet the requirement of the ground supporting height.

In one embodiment, the extended platform lift 260 is a sliding lift mechanism comprising a guide rail and a slider, wherein the guide rail and the slider are disposed on the first laterally extending platform 230 and the first flipping mechanism 240, respectively, for example, the guide rail is disposed on the rotating member 242 of the first flipping mechanism 240, and the slider is disposed on the bottom surface of the first laterally extending platform 230, and vice versa. For example, an electric cylinder is used to drive the mutual sliding between the guide rail and the slider.

The following describes the working process of the take-off and landing platform (taking a vehicle as an example) of the fixed-wing drone 400 for electromagnetic emission according to the present invention with reference to the accompanying drawings:

(I) mobile transportation link

In a transportation state, the first platform 200 and the second platform 300 are fixedly connected together, the first transversely-extending platform 230 and the first transversely-extending platform 330 are in a vertical state, and the movable parts are locked by the fixed legs 310, the locking mechanisms 340 and the like to form a box-type structure. The space between the first platform 200 and the second platform 300 is used for storing and transporting the fixed-wing drone 400. The first laterally extending platform 230 of the first platform 200 is lifted to increase the distance from the ground, and the first laterally extending platform 230 and the first laterally extending platform 330 are in contact with each other, so that a box-shaped structure with closed sides is formed while road surface passing performance is ensured.

(II) preparation of work

Before the unmanned aerial vehicle 400 is ready to take off, each locking part is opened, the first transverse expansion platform 230 of the first platform 200 descends, and the interference with the transverse expansion of the second telescopic supporting leg 320 is prevented; then the first transverse expansion platform 330 of the second platform 300 completes transverse expansion, and then the second telescopic supporting legs 320 are transversely expanded, stretched and supported on the ground conveniently; the second platform 300 is raised by the sets of second telescopic legs 320, so that the first platform 200 and the second platform 300 are separated; the first platform 200 is driven out with the vehicle chassis.

After the vehicle is driven out, the first transversely-expanding portion of the first platform 200 is expanded under the driving of the hydraulic cylinder through the action of the first bending mechanism, and the transverse expansion of the first platform 200 is completed. After the first lateral expansion platform 230 is transversely expanded, the first platform body 201 is locked with the first lateral expansion platform 230 at both sides by a locking device installed near the joint.

Next, the second telescoping legs 320 of the second platform 300 are retracted such that the surface of the second platform 300 is lowered to be level with the surface of the first platform 200. At this time, the posture of the lower platform is adjusted by the posture adjusting mechanism 220 arranged on the girder of the vehicle under the driving of the electric cylinder, so that the first platform 200 is aligned with the second platform 300; finally, the docking of the two expanded platforms is accomplished by a locking mechanism 340 mounted at the end of the first platform 200 and the second platform 300. And then the telescopic supporting legs of all the expansion platforms are lowered, and the erection of the take-off and landing runway is completed. The parking platform is now also deployed by the third fold-over mechanism 380.

(III) task execution link

Taking off: before the takeoff task is executed, the placing position of the unmanned aerial vehicle 400 is adjusted, the electromagnetic launching device 210 completes erecting under the driving of a built-in hydraulic cylinder, and then the unmanned aerial vehicle 400 is installed on an ejection rack of the electromagnetic launching device 210; after deployment is completed, the unmanned aerial vehicle 400 waits for a launch instruction, an engine of the unmanned aerial vehicle is started, and an ejection frame pushes a body to eject and fly out at an elevation angle of 10 degrees, so that the unmanned aerial vehicle 400 is launched.

The recovery process comprises the following steps: when the drone 400 is recovered, the electromagnetic emitting device 210 falls down to form a runway with the platform. Two check lines 270 are installed on the first platform 200. When the unmanned aerial vehicle 400 lands, the blocking lock hooked on the runway is used for completing recovery, and the unmanned aerial vehicle is temporarily parked on a parking platform extending out of the tail end of the runway, so that the recovery of the unmanned aerial vehicle 400 behind is not influenced.

(IV) evacuation link

After the work task is completed, the unmanned aerial vehicle 400 is transported and fixed, and the telescopic legs are retracted. The first transversely extending platform 230 is withdrawn and lowered to be in a vertical state under the action of the first bending mechanism, and the vehicle chassis is driven back to the original position, that is, the first platform 200 is located below the second platform 300. The first platform 200 and the second platform 300 are butted by the contraction of the second telescopic leg 320 and the matching of the posture adjusting mechanism 220 on the chassis, namely, the ball at the bottom of the fixed leg 310 of the second platform 300 is sunk into the tapered groove of the foot seat 270 of the second platform 300. The first platform 200 and the second platform 300 are then secured using a bolted connection. Then the second telescopic leg 320 is transversely contracted, the parking platform is folded and recovered under the action of the third folding mechanism 380, the first transverse expansion platform 330 of the second platform 300 withdraws under the action of the second folding mechanism and is placed in a vertical state, and all movable parts are locked to finish locking in a transportation state. The first laterally extending platform 230 of the first platform 200 is lifted back into transport, ready for evacuation.

Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are still within the scope of the present invention, provided they are within the scope of the claims of the present invention and their equivalents.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.

Claims

1. The utility model provides an unmanned aerial vehicle platform that takes off and land for electromagnetic emission which characterized in that: the method comprises the following steps:

a first platform disposed on the mobile chassis;

the electromagnetic emission device is arranged on the first platform and can be erected to a preset angle relative to the first platform;

in a second state, the second platform moves along the longitudinal direction to be adjacent to and flush with the surface of the first platform;

the first platform further comprises a first transverse expansion platform, and the first transverse expansion platform is connected to two sides of the first platform body through a first turnover mechanism, so that the first transverse expansion platform can be in a vertically suspended state and a horizontally unfolded state relative to the first platform body;

the first transverse expansion platform is in a suspended state during transportation, the peripheral space of the platform is saved, the first transverse expansion platform does not interfere with the second platform, and the first transverse expansion platform is unfolded by 90 degrees through the first turnover mechanism during working so as to expand the transverse size of the platform.

2. An unmanned aerial vehicle take-off and landing platform for electromagnetic emissions according to claim 1, wherein: the electromagnetic emission device is hinged with the first platform main body, and one end of the electromagnetic emission device can be erected to a certain angle under the action of the erecting device.

3. An unmanned aerial vehicle take-off and landing platform for electromagnetic emissions according to claim 1, wherein: the first platform further comprises a posture adjusting mechanism, and the posture adjusting mechanism is arranged between the first platform main body and the moving chassis and used for adjusting the posture of the first platform relative to the moving chassis.

4. A drone take-off and landing platform for electromagnetic emissions according to claim 3, characterised in that: the posture adjusting mechanism comprises a plurality of electric cylinders, and the electric cylinders enable the movable chassis and the first platform to form a parallel mechanism.

5. An unmanned aerial vehicle take-off and landing platform for electromagnetic emissions as claimed in any of claims 1-4, wherein: the first platform further comprises a foot seat used for fixing and locking the second platform during transportation, the foot seat comprises a supporting portion and a cover body, the supporting portion comprises a groove, the cover body is hinged to the supporting portion, and therefore the cover body can be switched between two states of covering the groove and exposing the groove.

6. An unmanned aerial vehicle take-off and landing platform for electromagnetic emissions according to claim 5, wherein: the second platform comprises a second platform main body, fixed supporting legs and telescopic supporting legs, wherein the fixed supporting legs are used for fixing the second platform on the first platform, and the fixed supporting legs are arranged on two sides of the second platform main body and can be inserted into grooves of footstands of the first platform; the telescopic legs are symmetrically arranged on two sides of the second platform main body and can be stretched in the vertical direction, and the telescopic range in the vertical direction enables the telescopic legs to be in basic contact when the second platform is located in the first state and the second state.

7. An unmanned aerial vehicle take-off and landing platform for electromagnetic emissions as claimed in claim 6, wherein: and a transverse telescopic device is arranged between each pair of symmetrical telescopic supporting legs, and the telescopic supporting legs can move transversely relative to the second platform main body through the transverse telescopic device.

8. An unmanned aerial vehicle take-off and landing platform for electromagnetic emissions as claimed in any of claims 1-4, wherein: the second platform further comprises a second transverse expansion platform, and the second transverse expansion platform is connected to two sides of the second platform body through a second turnover mechanism, so that the second transverse expansion platform can be in a vertically suspended state and a horizontally unfolded state relative to the second platform body.

9. An unmanned aerial vehicle take-off and landing platform for electromagnetic emissions as claimed in claim 8, wherein: when the second platform is in the first state, the second transverse expansion platform and the first transverse expansion platform are both in vertical positions and are in contact with each other or are separated by a small distance.