阅读说明：本技术 一种无人直升机用可伸缩的全面防护装置 (Comprehensive protector of telescopic for unmanned helicopter ) 是由 陈罗丹 于 2021-07-15 设计创作，主要内容包括：本发明公开了一种无人直升机用可伸缩的全面防护装置,涉及无人直升机技术领域,包括机体,所述机体的底部中端固定连接有移动伸缩装置,所述机体的底部两侧固定连接有机架,所述机架的一侧固定连接有横杆,所述机体的顶部外壁设置有主旋翼。通过移动伸缩装置的设置,方便对直升机机体的底部和侧面进行安全防护,防止直升机降落时的冲击力对机体造成损坏,产生撞击时会先与机身外部突出的部分接触即防护筒的位置接触,下防护筒、复位弹簧和上防护筒同时对机体进行防护,防护筒的防护范围变大的同时防护效果更好,且防护结构通过移动伸缩装置方便伸缩折叠,通过伸缩杆控制伸缩绳的收缩,防护筒方便移回挤压槽的内部,不会影响直升机的正常飞行。(The invention discloses a telescopic comprehensive protection device for an unmanned helicopter, and relates to the technical field of unmanned helicopters. Through the setting that removes telescoping device, conveniently carry out safety protection to the bottom and the side of helicopter organism, impact force when preventing that the helicopter from descending causes the damage to the organism, can earlier contact the position contact of protection section of thick bamboo promptly with the outside outstanding part of fuselage when producing the striking, lower protection section of thick bamboo, reset spring protects the organism with last protection section of thick bamboo simultaneously, the protective effect is better when the protective housing's protective scope becomes big, and protective structure is through removing the convenient flexible folding of telescoping device, through the shrink of the flexible rope of telescopic link control, the inside in extrusion groove is conveniently moved back to the protection section of thick bamboo, can not influence the normal flight of helicopter.)

1. The utility model provides a comprehensive protector of telescopic for unmanned helicopter, includes organism (1), its characterized in that: the middle end of the bottom of the machine body (1) is fixedly connected with a movable telescopic device (2), two sides of the bottom of the machine body (1) are fixedly connected with a rack (3), one side of the rack (3) is fixedly connected with a cross rod (4), the outer wall of the top of the machine body (1) is provided with a main rotor wing (5), and the outer wall of the rear end of the machine body (1) is provided with a tail rotor (6);

the movable telescopic device (2) comprises a main body (201), the inner wall of the top of the main body (201) is rotatably connected with a rotating column (202), the outer wall of the rotating column (202) is fixedly connected with a rotating plate (203), the bottom of the main body (201) is fixedly connected with a connecting shell (204), the inner wall of one side of the connecting shell (204) is fixedly connected with a hydraulic cylinder (205), one side of the hydraulic cylinder (205) is fixedly connected with a moving ring (206), the inner wall of one side of the moving ring (206) is fixedly connected with a circular block (207), the outer wall of the rotating column (202) is fixedly connected with a rotating rod (208) below the connecting shell (204), two ends of the rotating rod (208) are respectively hinged with a connecting rod (209), the bottoms of the connecting rods (209) are respectively fixedly connected with a sliding block (210), and the bottoms of the sliding blocks (210) are respectively fixedly connected with a sliding plate (211), the top of each of the two sliding plates (211) is fixedly connected with a telescopic rod (212), the top of each telescopic rod (212) is fixedly connected with a telescopic rope (213), one side of each telescopic rope (213) is hinged with an upper protection cylinder (214), the inner wall of the top of each upper protection cylinder (214) is fixedly connected with a return spring (215), the bottom of each return spring (215) is fixedly connected with a lower protection cylinder (216), the outer wall of the main body (201) is fixedly connected with a fixing plate (217), and the bottom of each fixing plate (217) is provided with an extrusion groove (218).

2. The retractable all-round guard for an unmanned helicopter of claim 1, characterized in that: the outer wall of horizontal pole (4) has cup jointed slip cap (7), one side fixedly connected with support column (8) of slip cap (7), one side outer wall fixedly connected with gyro wheel (9) of support column (8), top outer wall fixedly connected with dead lever (10) of frame (3), one side outer wall fixedly connected with buffer spring (11) of dead lever (10), one side sliding connection of support column (8) has buffer spring two (12).

3. The retractable all-round shield for the unmanned helicopter of claim 2, characterized in that: one side, far away from the fixing rod (10), of the first buffer spring (11) is fixedly connected with the outer wall of one side, far away from the second buffer spring (12), of the supporting column (8), the top of the fixing rod (10) is hinged to the outer wall of the sliding sleeve (7), and one side, far away from the supporting column (8), of the second buffer spring (12) is fixedly connected with the bottom of the sliding plate (211).

4. The retractable all-round guard for an unmanned helicopter of claim 1, characterized in that: wedge groove (13) have been seted up to the bottom of organism (1), one side inner wall of wedge groove (13) articulates there is push rod (14), one side of push rod (14) articulates there is movable plate (15), one side fixedly connected with compression spring (16) of push rod (14) are kept away from in movable plate (15), one side fixedly connected with rubber elasticity gasbag (17) of movable plate (15) are kept away from in compression spring (16).

5. The retractable all-round shield for the unmanned helicopter of claim 4, characterized in that: one side of the moving plate (15) is attached to the outer wall of one side of the machine body (1), and one side, away from the compression spring (16), of the rubber elastic air bag (17) is connected with the inner wall of one side of the wedge-shaped groove (13) in a clamping mode.

6. The retractable all-round guard for an unmanned helicopter of claim 1, characterized in that: the top outer wall of main part (201) and the bottom outer wall fixed connection of organism (1), rotate the inside of post (202) through connecting shell (204).

7. The retractable all-round guard for an unmanned helicopter of claim 1, characterized in that: the bottom of the fixed plate (217) is provided with a sliding groove, the outer wall of the top of the sliding block (210) is in sliding connection with the inner wall of the sliding groove, and the circular block (207) and the rotating plate (203) are located on the same horizontal line and are arranged in a mutually crossed mode.

8. The retractable all-round guard for an unmanned helicopter of claim 1, characterized in that: the anti-collision device is characterized in that three telescopic barrels are arranged between the upper protective barrel (214) and the lower protective barrel (216), the three telescopic barrels are fixedly connected through a return spring (215), the bottom of the lower protective barrel (216) is fixedly connected with the top of the sliding plate (211) through the return spring (215), the top of the upper protective barrel (214) is attached to the inner wall of the top of the extrusion groove (218), and the inner wall of one side of the extrusion groove (218) and the outer wall of one side of the upper protective barrel (214) are both arc-shaped surfaces.

Technical Field

The invention relates to the technical field of unmanned helicopters, in particular to a telescopic comprehensive protection device for an unmanned helicopter.

Background

The helicopter is one of the unique creations of the twenty-century aviation technology, and the application range of the aircraft is greatly expanded. The helicopter has the outstanding characteristics of capability of maneuvering flight with low altitude, low speed and unchanged nose direction, particularly capability of vertically taking off and landing on small-area fields, and capability of being widely applied to a plurality of fields such as transportation, patrol, tourism, rescue and the like.

The utility model discloses a general aircraft compels to land protective structure as chinese patent CN212423496U, its angle adjustment mechanism through setting up can conveniently adjust protective structure's the angle of placing to can select suitable protection angle when the aircraft compels to land, through guide block and the guide way that sets up, can play the effect of direction when protective structure protects, thereby can improve the relative stability of protective structure activity, nevertheless still have following problem when it uses:

1. because protective structure's volume is great, inconvenient flexible folding, area in helicopter flight process is great, influences the flight of helicopter easily, and the protective effect is relatively poor.

2. Because the protector shakes easily when the helicopter receives external impact force, the protection can not be carried out on the helicopter effectively in a damping manner, and the protection effect on the helicopter is poor.

3. Because the helicopter lands at first when falling, the front end of the helicopter body is easy to be damaged by impact, and the protection effect is poor.

Disclosure of Invention

The invention aims to provide a telescopic comprehensive protection device for an unmanned helicopter, which solves the problems that the protection structure is large in size, inconvenient to stretch and fold, large in occupied area in the flying process of the helicopter, easy to influence the flying of the helicopter and poor in protection effect; the protection device is easy to vibrate when the helicopter is subjected to external impact force, can not effectively perform shock absorption protection on the helicopter during protection, and has poor protection effect on the helicopter; when the helicopter lands, the frame firstly lands, the front end of the helicopter body is easy to be damaged by impact, and the protection effect is poor.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a comprehensive protector of telescopic for unmanned helicopter, includes the organism, the bottom middle-end fixedly connected with of organism removes the telescoping device, the bottom both sides fixedly connected with frame of organism, one side fixedly connected with horizontal pole of frame, the top outer wall of organism is provided with main rotor, the rear end outer wall of organism is provided with the tail-rotor.

The movable telescopic device comprises a main body, wherein a rotating column is rotatably connected to the inner wall of the top of the main body, a rotating plate is fixedly connected to the outer wall of the rotating column, a connecting shell is fixedly connected to the bottom of the main body, a hydraulic cylinder is fixedly connected to the inner wall of one side of the connecting shell, a moving ring is fixedly connected to one side of the hydraulic cylinder, a round block is fixedly connected to the inner wall of one side of the moving ring, a rotating rod is fixedly connected to the outer wall of the rotating column and positioned below the connecting shell, connecting rods are respectively hinged to the two ends of the rotating rod, sliding blocks are respectively fixedly connected to the bottoms of the two connecting rods, sliding plates are respectively fixedly connected to the bottoms of the two sliding blocks, telescopic rods are respectively fixedly connected to the tops of the two sliding plates, telescopic rods are respectively fixedly connected to the tops of the telescopic rods, a telescopic rope is fixedly connected to the tops of the telescopic rods, and an upper protection cylinder is hinged to one side of the telescopic rope, go up a protection section of thick bamboo top inner wall fixedly connected with reset spring, a protection section of thick bamboo under reset spring's the bottom fixedly connected with, the outer wall fixedly connected with fixed plate of main part, the extrusion groove has been seted up to the bottom of fixed plate.

Preferably, the outer wall of the cross rod is sleeved with a sliding sleeve, one side of the sliding sleeve is fixedly connected with a supporting column, one side of the supporting column is fixedly connected with an idler wheel, the top outer wall of the rack is fixedly connected with a fixing rod, one side of the fixing rod is fixedly connected with a first buffer spring, and one side of the supporting column is slidably connected with a second buffer spring.

Preferably, one side of the first buffer spring, which is far away from the fixed rod, is fixedly connected with the outer wall of one side of the support column, which is far away from the second buffer spring, the top of the fixed rod is hinged with the outer wall of the sliding sleeve, and one side of the second buffer spring, which is far away from the support column, is fixedly connected with the bottom of the sliding plate.

Preferably, the wedge groove has been seted up to the bottom of organism, one side inner wall in wedge groove articulates there is the push rod, one side of push rod articulates there is the movable plate, one side fixedly connected with compression spring of push rod is kept away from to the movable plate, one side fixedly connected with rubber elasticity gasbag that compression spring kept away from the movable plate.

Preferably, one side of the movable plate is attached to the outer wall of one side of the machine body, and one side, away from the compression spring, of the rubber elastic air bag is connected with the inner wall of one side of the wedge-shaped groove in a clamping mode.

Preferably, the outer wall of the top of the main body is fixedly connected with the outer wall of the bottom of the machine body, and the rotating column penetrates through the inside of the connecting shell.

Preferably, a sliding groove is formed in the bottom of the fixing plate, the outer wall of the top of the sliding block is in sliding connection with the inner wall of the sliding groove, and the round block and the rotating plate are located on the same horizontal line and are arranged in a crossed mode.

Preferably, the upper protection cylinder and the lower protection cylinder are provided with three telescopic cylinders, the three telescopic cylinders are fixedly connected through a reset spring, the bottom of the lower protection cylinder is fixedly connected with the top of the sliding plate through the reset spring, the top of the upper protection cylinder is attached to the inner wall of the top of the extrusion groove, and the inner wall of one side of the extrusion groove and the outer wall of one side of the upper protection cylinder are both arc-shaped surfaces.

Compared with the related art, the telescopic comprehensive protection device for the unmanned helicopter provided by the invention has the following beneficial effects:

1. the invention provides a telescopic comprehensive protection device for an unmanned helicopter, which is convenient for safely protecting the bottom and the side surface of a helicopter body by arranging a movable telescopic device, preventing the helicopter body from being damaged by impact force when the helicopter lands, wherein a circular block is simultaneously moved and gradually contacted with a rotating plate by driving a moving ring to move when a hydraulic cylinder is started, the rotating plate is gradually pushed and simultaneously rotates with a rotating column, the rotating rod rotates and drives a connecting rod to move towards one side which is gradually far away when the rotating column rotates, the connecting rod drives a sliding block to slide along the inner wall of a sliding groove, the sliding plate gradually moves towards two sides, a lower protection cylinder, a reset spring and an upper protection cylinder simultaneously move, the upper protection cylinder gradually separates from an extrusion groove when moving, the elastic force of the reset spring is released to automatically eject, and the upper protection cylinder and three telescopic cylinders simultaneously eject, protection range grow of a protection section of thick bamboo, conveniently carry out safety protection to the both sides of organism simultaneously, protective effect is better simultaneously, can earlier contact the position contact of a protection section of thick bamboo promptly with the outside outstanding part of fuselage when producing the striking, a protection section of thick bamboo down, reset spring and last protection section of thick bamboo protect the organism simultaneously, and protective structure is through removing the convenient flexible folding of telescoping device, the shrink of flexible rope is controlled through the telescopic link, conveniently move back the inside of extrusion groove when the arcwall face of last protection section of thick bamboo one side contacts with the arcwall face of extrusion groove one side, area in helicopter flight in-process is little, can not influence the normal flight of helicopter, protective effect is better, and the device has practicability.

2. The invention provides a telescopic comprehensive protection device for an unmanned helicopter, which is characterized in that when a lower protection barrel, a reset spring and an upper protection barrel are used for protecting a helicopter body, a movable telescopic device can shake when the body is impacted by the outside, a sliding plate shakes and drives a buffer spring II to shake, a supporting column shakes and drives a roller to move simultaneously, the roller is convenient to contact with the ground, the sliding sleeve rotates on the outer wall of a cross rod, the buffer spring I also generates a vibration sense, the buffer spring I and the buffer spring II can reduce the vibration sense when the body shakes, the helicopter can be effectively damped while the protection effect of the helicopter is good, and the protection effect of the helicopter is better.

3. The invention provides a telescopic comprehensive protection device for an unmanned helicopter, which is characterized in that a wedge-shaped groove is formed in a helicopter body and used for placing a rubber elastic air bag, a moving plate is driven to move when a push rod moves, the moving plate, a compression spring and the rubber elastic air bag gradually move out of the wedge-shaped groove, the rubber elastic air bag is opened at the moment to perform anti-collision protection on the front end of the helicopter body, the instability of the helicopter body during falling is safely protected, the front end of the helicopter body is prevented from being damaged easily due to collision, and the protection effect is better.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a perspective view of the structure of the present invention;

FIG. 3 is a right side view of the structure of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 2 according to the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 3 according to the present invention;

FIG. 6 is an exploded view of the mobile telescopic device of the present invention;

FIG. 7 is an exploded view of the mobile telescopic device of the present invention;

FIG. 8 is a top view of the mobile expansion device of the present invention;

fig. 9 is a structural front view of the mobile telescopic device of the present invention.

In the figure: 1. a body; 2. moving the telescoping device; 201. a main body; 202. rotating the column; 203. a rotating plate; 204. a connecting shell; 205. a hydraulic cylinder; 206. a moving ring; 207. a circular block; 208. rotating the rod; 209. a connecting rod; 210. a slider; 211. a sliding plate; 212. a telescopic rod; 213. a retractable rope; 214. an upper protective cylinder; 215. a return spring; 216. a lower protective cylinder; 217. a fixing plate; 218. extruding a groove; 3. a frame; 4. a cross bar; 5. a main rotor; 6. a tail rotor; 7. a sliding sleeve; 8. a support pillar; 9. a roller; 10. fixing the rod; 11. a first buffer spring; 12. a second buffer spring; 13. a wedge-shaped groove; 14. a push rod; 15. moving the plate; 16. a compression spring; 17. a rubber elastic air bag.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; 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.

The first embodiment is as follows:

referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a comprehensive protector of telescopic for unmanned helicopter, includes organism 1, and the bottom middle-end fixedly connected with of organism 1 removes telescoping device 2, and the bottom both sides fixedly connected with frame 3 of organism 1, one side fixedly connected with horizontal pole 4 of frame 3, the top outer wall of organism 1 are provided with main rotor 5, and the rear end outer wall of organism 1 is provided with tail-rotor 6.

The movable telescopic device 2 comprises a main body 201, a rotating column 202 is rotatably connected to the inner wall of the top of the main body 201, a rotating plate 203 is fixedly connected to the outer wall of the rotating column 202, a connecting shell 204 is fixedly connected to the bottom of the main body 201, a hydraulic cylinder 205 is fixedly connected to the inner wall of one side of the connecting shell 204, a moving ring 206 is fixedly connected to one side of the hydraulic cylinder 205, a circular block 207 is fixedly connected to the inner wall of one side of the moving ring 206, a rotating rod 208 is fixedly connected to the outer wall of the rotating column 202 and positioned below the connecting shell 204, connecting rods 209 are respectively hinged to both ends of the rotating rod 208, sliding blocks 210 are respectively fixedly connected to the bottoms of the two connecting rods 209, sliding plates 211 are respectively fixedly connected to the bottoms of the two sliding blocks 210, telescopic rods 212 are respectively fixedly connected to the tops of the two sliding plates 211, a telescopic rope 213 is fixedly connected to the top of the telescopic rod 212, and an upper protection barrel 214 is hinged to one side of the telescopic rope 213, the top inner wall of the upper protection cylinder 214 is fixedly connected with a return spring 215, the bottom of the return spring 215 is fixedly connected with a lower protection cylinder 216, the outer wall of the main body 201 is fixedly connected with a fixing plate 217, and the bottom of the fixing plate 217 is provided with a squeezing groove 218.

The top outer wall of main part 201 and the bottom outer wall fixed connection of organism 1, the inside of rotation post 202 through connection shell 204, the sliding tray has been seted up to the bottom of fixed plate 217, the top outer wall of sliding block 210 and the inner wall sliding connection of sliding tray, circular block 207 is located same water flat line and intercrossing setting with rotor plate 203, it is provided with three telescopic cylinder to go up between a protection section of thick bamboo 214 and the lower protection section of thick bamboo 216, through reset spring 215 fixed connection between the three telescopic cylinder, the top fixed connection of reset spring 215 and sliding plate 211 is passed through to the bottom of lower protection section of thick bamboo 216, the top of going up a protection section of thick bamboo 214 and the laminating of the top inner wall of extrusion groove 218, one side inner wall of extrusion groove 218 and one side outer wall of last protection section of thick bamboo 214 all set up to the arcwall.

In this embodiment, the bottom and the side of the helicopter body 1 are conveniently protected by the movable telescopic device 2, so as to prevent the helicopter body 1 from being damaged by impact force when the helicopter lands, the movable ring 206 is driven to move by starting the hydraulic cylinder 205, the circular block 207 moves and gradually contacts with the rotating plate 203, the rotating plate 203 is gradually pushed and rotates with the rotating column 202, the rotating rod 208 rotates and drives the connecting rod 209 to move towards the side away gradually when the rotating column 202 rotates, the connecting rod 209 drives the sliding block 210 to slide along the inner wall of the sliding groove, the sliding plate 211 gradually moves towards two sides, the lower protection cylinder 216, the return spring 215 and the upper protection cylinder 214 move simultaneously, the upper protection cylinder 214 gradually separates from the extrusion groove 218 when moving, at the moment, the elastic force of the return spring 215 is released to automatically pop up, and the upper protection cylinder 214 and the three telescopic cylinders pop up simultaneously, protection range grow of a protection section of thick bamboo, convenient while carries out safety protection to organism 1's both sides, protective effect is better simultaneously, can earlier when producing the striking with the outside outstanding part contact of fuselage promptly the position contact of a protection section of thick bamboo, lower protection section of thick bamboo 216, reset spring 215 and last protection section of thick bamboo 214 protect organism 1 simultaneously, and protective structure is through removing the convenient flexible folding of telescoping device 2, the shrink through flexible rope 213 of telescopic link 212 control, conveniently move back the inside of extrusion groove 218 when the arcwall face of last protection section of thick bamboo 214 one side contacts with the arcwall face of extrusion groove 218 one side, area at helicopter flight in-process is little, can not influence the normal flight of helicopter, protective effect is better, has the practicality.

The main body 201 and the machine body 1 are placed stably and conveniently, the rotating column 202 penetrates through the connecting shell 204 to rotate conveniently, the top outer wall of the sliding block 210 is connected with the inner wall of the sliding groove in a sliding mode to slide along the track of the sliding groove conveniently, the sliding block 210 plays a limiting role, the circular block 207 and the rotating plate 203 are located on the same horizontal line and are arranged in a cross mode to be in contact with the rotating plate 203 conveniently when the circular block 207 moves, the bottom of the lower protection cylinder 216 is fixedly connected with the top of the sliding plate 211 through the reset spring 215 to be placed stably, the top of the upper protection cylinder 214 is attached to the top inner wall of the extrusion groove 218 to be placed conveniently through the upper protection cylinder 214, the lower protection cylinder 216 and the reset spring 215, and the arc-shaped surface is arranged to facilitate the movement of the upper protection cylinder 214 on one side of the extrusion groove 218.

Example two:

referring to fig. 1-9, on the basis of the first embodiment, the present invention provides a technical solution: sliding sleeve 7 has been cup jointed to the outer wall of horizontal pole 4, one side fixedly connected with support column 8 of sliding sleeve 7, one side outer wall fixedly connected with gyro wheel 9 of support column 8, top outer wall fixedly connected with dead lever 10 of frame 3, one side outer wall fixedly connected with buffer spring 11 of dead lever 10, one side sliding connection of support column 8 has buffer spring two 12, one side outer wall fixed connection that buffer spring two 12 was kept away from to one side that buffer spring 11 kept away from dead lever 10 and support column 8, the top of dead lever 10 is articulated with the outer wall of sliding sleeve 7, one side that support column 8 was kept away from to buffer spring two 12 and the bottom fixed connection of sliding plate 211.

In this embodiment, when the machine body 1 is protected by the lower protection cylinder 216, the return spring 215 and the upper protection cylinder 214, the movable expansion device 2 is shaken when the external impact is applied, the sliding plate 211 is shaken and drives the second buffer spring 12 to shake, the support post 8 shakes and drives the roller 9 to move simultaneously, the roller 9 is conveniently contacted with the ground, the sliding sleeve 7 rotates on the outer wall of the cross rod 4, the first buffer spring 11 is also vibrated, the first buffer spring 11 and the second buffer spring 12 can reduce the vibration when shaking, the helicopter has good protection effect, and can effectively reduce the vibration of the helicopter, the helicopter has better protection effect, the first buffer spring 11 is conveniently connected and fixed with the fixed rod 10 and is conveniently stretched, the sliding sleeve 7 is conveniently rotated on the outer wall of the cross rod 4, the second buffer spring 12 is conveniently fixed with the sliding plate 211, the second buffer spring 12 can reduce the vibration received by the sliding plate 211.

Example three:

referring to fig. 1-9, on the basis of the first embodiment, the present invention provides a technical solution: the bottom of organism 1 has been seted up wedge groove 13, and one side inner wall of wedge groove 13 articulates there is push rod 14, and one side of push rod 14 articulates there is movable plate 15, and one side fixedly connected with compression spring 16 of push rod 14 is kept away from to movable plate 15, and one side fixedly connected with rubber elasticity gasbag 17 of movable plate 15 is kept away from to compression spring 16, and one side of movable plate 15 and one side outer wall laminating of organism 1, one side that compression spring 16 was kept away from to rubber elasticity gasbag 17 and one side inner wall joint of wedge groove 13.

In this embodiment, through the inside wedge groove 13 that sets up of organism 1, be used for placing rubber elasticity gasbag 17, drive movable plate 15 when moving through push rod 14, movable plate 15, compression spring 16 and rubber elasticity gasbag 17 shift out the inside of wedge groove 13 gradually, rubber elasticity gasbag 17 opens this moment, carry out collision avoidance to the front end of organism 1, safety protection is carried out to the instability of helicopter when descending, prevent that the front end of organism 1 from receiving the striking easily and damaging, the protecting effect is better, movable plate 15 conveniently moves along the inner wall of organism 1, rubber elasticity gasbag 17 is convenient for fixed the placing with one side inner wall joint of wedge groove 13.

The working principle is as follows:

when the helicopter is used, the bottom and the side of the helicopter body 1 are conveniently and safely protected by the arrangement of the movable telescopic device 2, the damage to the body 1 caused by impact force when the helicopter lands is prevented, the movable ring 206 is driven to move by starting the hydraulic cylinder 205, the circular block 207 simultaneously moves and gradually contacts with the rotating plate 203, the rotating plate 203 is gradually pushed and simultaneously rotates with the rotating column 202, the rotating rod 208 rotates and drives the connecting rod 209 to move towards the side which is gradually far away when the rotating column 202 rotates, the connecting rod 209 drives the sliding block 210 to slide along the inner wall of the sliding groove, the sliding plate 211 gradually moves towards two sides, the lower protective cylinder 216, the reset spring 215 and the upper protective cylinder 214 simultaneously move, the upper protective cylinder 214 gradually separates from the extrusion groove 218 when moving, the elastic force of the reset spring 215 is released to automatically pop up, and the upper protective cylinder 214 and the three telescopic cylinders pop up simultaneously, the protection range of the protection cylinder is enlarged, safety protection can be conveniently and simultaneously carried out on two sides of the machine body 1, the protection effect is better, when impact is generated, the protection cylinder can be firstly contacted with a part protruding out of the machine body, namely the protection cylinder is contacted with the position, the lower protection cylinder 216, the reset spring 215 and the upper protection cylinder 214 simultaneously protect the machine body 1, the protection structure is conveniently stretched and folded by moving the stretching device 2, the stretching rope 213 is controlled to shrink by the stretching rod 212, when the arc-shaped surface on one side of the upper protection cylinder 214 is contacted with the arc-shaped surface on one side of the extrusion groove 218, the protection structure can be conveniently moved back to the interior of the extrusion groove 218, the occupied area in the flying process of the helicopter is small, the normal flying of the helicopter can not be influenced, the protection effect is better, and the practicability is achieved;

when the machine body 1 is protected by the lower protection barrel 216, the reset spring 215 and the upper protection barrel 214, when the external world impacts the machine body, the movable telescopic device 2 can shake, the sliding plate 211 shakes and drives the second buffer spring 12 to shake, the supporting column 8 shakes and drives the roller 9 to move simultaneously, the roller 9 is conveniently contacted with the ground, the sliding sleeve 7 rotates on the outer wall of the cross rod 4, the first buffer spring 11 also generates a shaking sense, the first buffer spring 11 and the second buffer spring 12 can relieve the shaking sense when shaking, the helicopter can be effectively damped while the protection effect on the helicopter is good, and the protection effect on the helicopter is better;

through the inside wedge groove 13 that sets up of organism 1 for place rubber elasticity gasbag 17, drive movable plate 15 when moving through push rod 14 and remove, movable plate 15, compression spring 16 and rubber elasticity gasbag 17 shift out the inside of wedge groove 13 gradually, rubber elasticity gasbag 17 is opened this moment, carry out collision avoidance to the front end of organism 1, carry out safety protection to the instability of helicopter when descending, prevent that the front end of organism 1 from receiving the striking easily and damaging, the protecting effect is better.