CN218463852U - Arm device and rotor craft - Google Patents

Abstract

The embodiment of the utility model provides an arm device and rotor craft belongs to aircraft technical field. The machine arm device comprises a machine arm base, a motor base, a first fixing piece and a second fixing piece. The horn base is adapted to be coupled to a fuselage of the rotorcraft. The arm seat includes relative first installation department and the second installation department that sets up. The first mounting portion is provided with a first mounting hole. A gap is provided between the first mounting portion and the second mounting portion. The motor cabinet is used for installing a power device, and a fixing hole is formed in the motor cabinet. First mounting passes first mounting hole and fixed orifices in proper order to first mounting is connected with the second installation department. The second fixing piece is matched and connected with the first fixing piece, so that the motor base is fixedly arranged in the gap. The motor cabinet is stably and firmly installed on the horn block through the cooperation of first mounting and second mounting to make rotor craft's flight safer.

Description

Arm device and rotor craft

Technical Field

The utility model relates to an aircraft field particularly, relates to an arm device and rotor craft.

Background

A multi-rotor aircraft is a special drone helicopter with three and more rotor shafts. It is rotated by a motor on each shaft, driving the rotor, thereby generating lift. The collective pitch of the rotors is fixed and not variable as in a typical helicopter. Through changing the relative speed between the different rotors, can change the size of unipolar propulsive force to control the orbit of aircraft.

With the development of rotorcraft technology, many tasks can be performed by rotorcraft, for example: spraying of fire extinguishing liquid in the forest fire, aerial photography, electric power patrol, environmental monitoring, disaster patrol and other works.

At present, the motor base of the rotorcraft in the related art is not firmly fixed, which easily causes the explosion of the aircraft.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an arm device and rotor craft, its stability that can improve the installation of motor cabinet.

The embodiment of the utility model is realized like this:

in a first aspect, the utility model provides an arm device, which comprises an arm base, a motor base, a first fixing piece and a second fixing piece; the aircraft arm seat is used for being connected with an aircraft body of a rotor aircraft and comprises a first installation part and a second installation part which are arranged oppositely, the first installation part is provided with a first installation hole, and a gap is formed between the first installation part and the second installation part; the motor base is used for mounting a power device and is provided with a fixing hole; the first fixing piece penetrates through the first mounting hole and the fixing hole in sequence, and the second fixing piece is matched with the first fixing piece so that the motor base is fixedly mounted in the gap.

In an optional embodiment, the second mounting portion has a second mounting hole, and the first fixing member and/or the second fixing member are disposed through the second mounting hole.

In an optional implementation mode, the first fixing piece comprises a first limiting portion and a first connecting portion which are connected with each other, the second fixing piece comprises a second limiting portion and a second connecting portion which are connected with each other, the first connecting portion sequentially penetrates through the first mounting hole, the fixing hole and the second mounting hole, the first limiting portion is abutted to the outer side wall of the first mounting portion, the second connecting portion is detachably connected with the first connecting portion, and the second limiting portion is abutted to the outer side wall of the second mounting portion.

In an alternative embodiment, the first connection portion is threadedly engaged with the second connection portion.

In an optional embodiment, the horn device includes a shock absorber, the shock absorber is sleeved on the first fixing member and/or the second fixing member, and the shock absorber abuts against the motor base to reduce the vibration of the motor base.

In an alternative embodiment, the motor base comprises a matching part, and the matching part comprises a first side wall and a second side wall which are oppositely arranged; the fixing hole penetrates through the first side wall and the second side wall; the shock absorbing members comprise a first shock absorbing member and a second shock absorbing member; the first shock absorption piece is provided with a first through hole, and the first shock absorption piece is sleeved on the first fixing piece through the first through hole; one end of the first damping piece abuts against the first side wall, and the other end of the first damping piece abuts against the first mounting part; the second damping piece is provided with a second through hole, and the second damping piece is sleeved on the first fixing piece or the second fixing piece through the second through hole; one end of the second damping piece abuts against the second side wall, and the other end of the second damping piece abuts against the second mounting portion.

In an alternative embodiment, the fixing hole includes a first portion and a second portion, the first portion and the second portion being located at both ends of the fixing hole, respectively; one end part of the first shock absorption piece extends into the first part, so that the outer side wall of the first shock absorption piece is abutted against the inner wall of the fixing hole; the second shock absorbing part extends into the second part, so that the outer side wall of the second shock absorbing part is abutted against the inner wall of the fixing hole.

In an optional embodiment, the aperture of the first portion gradually increases towards the direction away from the second portion, the first shock absorber includes a first section and a second section that are connected in sequence, the diameter of the first section gradually decreases towards the direction away from the second section, the first section at least partially extends into the first portion, the outer side wall of the first section abuts against the inner wall of the first portion, and the second section abuts against the first mounting portion; the second part is gradually enlarged towards the aperture in the direction far away from the first part, the second shock absorption piece comprises a third section and a fourth section which are sequentially connected, the diameter of the third section in the direction far away from the fourth section is gradually reduced, at least part of the third section extends into the second part, the outer side wall of the third section abuts against the inner wall of the second part, and the fourth section abuts against the second mounting part.

In an alternative embodiment, the first shock absorber is partially mounted to the first mounting hole, and an outer side wall of the first shock absorber abuts against an inner wall of the first mounting hole; the second shock absorber part is arranged in the second mounting hole, and the outer side wall of the second shock absorber abuts against the inner wall of the second mounting hole.

In an optional embodiment, a first limiting table is arranged on the first damping piece, the first fixing piece includes a first limiting portion and a first connecting portion, the first connecting portion sequentially penetrates through the first mounting hole and the fixing hole and is connected with the second fixing piece, the first limiting table abuts against an outer side wall of the first mounting portion, and the first limiting portion abuts against the first limiting table; the second shock absorption piece is provided with a second limiting platform, the second fixing piece comprises a second limiting portion and a second connecting portion, the second connecting portion is connected with the first connecting portion, the second limiting platform is abutted to the outer side wall of the second installation portion, and the second limiting portion is abutted to the second limiting platform.

In an alternative embodiment, the fitting is a metal sleeve, the metal sleeve is mounted to the fixing hole, one end of the metal sleeve forms the first side wall, and the other end of the metal sleeve forms the second side wall.

In an optional embodiment, the number of the first fixing parts includes at least two, the number of the second fixing parts includes at least two, the first mounting portion is provided with at least two first mounting holes, the motor base is provided with at least two fixing holes, the number of the first shock absorbing members includes at least two, and the number of the second shock absorbing members includes at least two; the first fixing pieces are correspondingly arranged in the first mounting holes and the fixing holes one by one, and the second fixing pieces are correspondingly arranged in the first fixing pieces one by one; the first shock absorption pieces are arranged on the first fixing pieces in a one-to-one correspondence mode, and the second shock absorption pieces are arranged on the first fixing pieces or the second fixing pieces in a one-to-one correspondence mode.

In an alternative embodiment, the horn device of the rotorcraft includes a connecting rod, a connecting hole is provided on the horn base, one end of the connecting rod is installed in the connecting hole, and the other end is used for connecting with the fuselage.

In a second aspect, the present invention provides a rotorcraft, comprising a fuselage and any one of the preceding embodiments, a horn device, the horn base being mounted to the fuselage.

An embodiment of the utility model provides an arm device and rotor craft's beneficial effect includes:

this application is through setting up first installation department and second installation department on the horn seat for form the clearance between first installation department and the second installation department, with motor cabinet fixed mounting in the clearance, make the fixed of motor cabinet more stable through the restriction in clearance. Through setting up first mounting hole on first installation department, set up the fixed orifices on the motor cabinet, utilize first mounting to pass first mounting hole and fixed orifices in proper order, recycle second mounting and the cooperation of first mounting with motor cabinet fixed mounting in the clearance between first installation department and second installation department, because first mounting wears to locate first mounting hole and fixed orifices and is connected with the second installation department, make the connection of motor cabinet and horn seat simpler and more stable, thereby the weight down and the machine of exploding that cause at the motor cabinet is fixed insecure has been avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a rotorcraft according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an arm device according to an embodiment of the present invention;

fig. 3 is a schematic structural sectional view of an arm device according to an embodiment of the present invention;

FIG. 4 is a partial schematic view of FIG. 3;

fig. 5 is a schematic structural diagram of an arm seat according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a motor base according to an embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a motor base structure according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a first shock absorbing member provided in an embodiment of the present invention;

fig. 9 is a schematic structural view of a second damping member according to an embodiment of the present invention.

The diagram is 100-horn device; 110-a robot arm base; 111-a first mounting portion; 113-a second mounting portion; 115-gap; 117-first mounting hole; 119-connecting hole; 121-a second mounting hole; 123-a first seat; 125-a second seat; 127-a first groove; 129-a second groove; 130-a motor base; 131-a first side wall; 132-a mating portion; 133-a second sidewall; 135-fixing holes; 137-first part; 139-a second moiety; 141-metal sleeve; 143-a support table; 145-a fixed part; 147-a third part; 151-first fixing member; 153-a second fixture; 155-a first stop; 157-a first connection; 159-a second limiting part; 161-a second connection; 162-a threaded hole; 170-a shock absorbing member; 171-a first damping member; 173-a second damping member; 175-a first through hole; 177-a second through hole; 179-first stop; 181-a second stop; 183-first stage; 185-second stage; 187-a third segment; 189-fourth segment; 190-connecting rods; 200-a power plant; 210-a motor; 230-a propeller; 250-electric regulation; 300-a rotorcraft; 310-fuselage.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1, the present embodiment provides a rotorcraft 300 including a fuselage 310 and a plurality of horn devices 100 mounted to the fuselage 310. The horn assemblies 100 are distributed on opposite sides of the fuselage 310 for providing lift during flight of the rotorcraft 300.

In this embodiment, the rotorcraft 300 is a quad rotorcraft 300. The quad-rotor aircraft 300 includes four horn devices 100. The four horn devices 100 are uniformly distributed at both sides of the body 310.

In other embodiments of the present application, the rotary-wing aircraft 300 may also be a three-rotor aircraft 300 or a multi-rotor aircraft 300. It is understood that the number of the horn devices 100 is not limited to the present embodiment, and may be increased or decreased according to design requirements.

In this embodiment, the rotorcraft 300 also includes landing gear, a battery, an electronic control module, and an antenna. Landing gear is secured beneath the fuselage 310 for stability of the rotorcraft 300 in takeoff and landing. The spraying system is arranged below the machine body 310 and used for carrying out operation activities such as pesticide spraying or water sprinkling irrigation on crops in the working process. The battery is fixed to the body 310 to provide power. The electronic control module is fixed on the fuselage 310 and is used for controlling the flight attitude of the aircraft, and the antenna is used for communicating with an external terminal.

In this embodiment, the rotorcraft 300 further includes a spraying system mounted to the fuselage 310 for agricultural or water spray operations on crops in the farming industry.

In other embodiments of this application, this rotor craft 300 still can be used to the seed seeding, spraying of fire-extinguishing fluid in the forest fire, the photography of taking photo by plane, electric power patrols and examines, environmental monitoring, forest fire prevention and fields such as disaster patrol, specifically can install different carry according to different use scene and usage. For example, a shooting pan-tilt may be mounted as a mount at the time of aerial photography.

Referring to fig. 1, fig. 2 and fig. 3, in the present embodiment, the horn device 100 includes a horn base 110, a motor base 130, a first fixing member 151 and a second fixing member 153. The arm base 110 is connected to the body 310. The arm base 110 includes a first mounting portion 111 and a second mounting portion 113 disposed opposite to each other. The first mounting portion 111 defines a first mounting hole 117. A gap 115 is provided between the first mounting portion 111 and the second mounting portion 113. The motor base 130 is used for installing the power device 200, and a fixing hole 135 is formed in the motor base 130. The first fixing member 151 passes through the first mounting hole 117 and the fixing hole 135 in sequence. The second fixing member 153 is coupled to the first fixing member 151, so that the motor base 130 is fixedly installed in the gap 115.

This application makes motor cabinet 130's fixed more stable through setting up first installation department 111 and second installation department 113 on arm seat 110 for form clearance 115 between first installation department 111 and the second installation department 113, with motor cabinet 130 fixed mounting in clearance 115, the restriction through clearance 115 makes motor cabinet 130's fixed. Through set up first mounting hole 117 on first installation department 111, set up fixed orifices 135 on motor cabinet 130, utilize first mounting 151 to pass first mounting hole 117 and fixed orifices 135 in proper order, recycle second mounting 153 and the cooperation of first mounting 151 with motor cabinet 130 fixed mounting in the clearance 115 between first installation department 111 and second installation department 113, because first mounting 151 wears to locate first mounting hole 117 and fixed orifices 135 and be connected with second installation department 113, make the installation of motor cabinet 130 and horn base 110 simpler and be connected more stably, thereby the weight down and the machine of exploding that firmly arouse at motor cabinet 130 fixed have been avoided.

Referring to fig. 1 and 5, in the present embodiment, the horn base 110 includes a first base 123 and a second base 125. The second seat 125 is protruded at one side of the first seat 123. The first and second mounting portions 111 and 113 are protruded from a top wall of the first seating portion 123, and the first and second mounting portions 111 and 113 are disposed in parallel. The second seat 125 is connected to the fuselage 310.

Referring to fig. 1, fig. 2 and fig. 5, in the present embodiment, the horn device 100 further includes a connecting rod 190, and a connecting hole 119 is formed in a side wall of the second seat 125. One end of the connecting rod 190 is fixedly installed at the connecting hole 119, and the other end is connected with the body 310.

In this embodiment, the connecting rod 190 is an aluminum alloy tube wrapped with a carbon fiber material. In other embodiments of the present application, the connecting rod 190 may also be a plastic tube made of plastic or a carbon tube made of carbon fiber material.

Referring to fig. 2, fig. 3, fig. 4 and fig. 6, in the present embodiment, the horn device 100 further includes a power device 200. The motor mount 130 is adapted to couple the power unit 200 to the arm mount 110. A support base 143 is formed on the top of the motor base 130, and the power unit 200 is mounted on the support base 143. The motor base 130 has a fixing portion 145 formed at the bottom thereof to be matched with the gap 115, and a fixing hole 135 opened in the fixing portion 145. The fixing portion 145 is partially located in the gap 115 when the motor mount 130 is mounted to the arm mount 110, and the support base 143 is located on top of the first and second mounting portions 111 and 113.

Referring to fig. 3 and 4, in the present embodiment, the second mounting portion 113 is provided with a second mounting hole 121, and the first fixing element 151 is disposed through the second mounting hole 121. Through set up second mounting hole 121 on second installation department 113, let first mounting 151 wear to establish first mounting hole 117, fixed orifices 135 and second mounting hole 121 in proper order and make motor cabinet 130 all be connected through first mounting 151 with first installation department 111 and second installation department 113, further improved the stability that motor cabinet 130 is connected with horn base 110.

Referring to fig. 3 and 4, in the present embodiment, the first fixing element 151 includes a first position-limiting portion 155 and a first connecting portion 157. The second fixing member 153 includes a second stopper 159 and a second connecting portion 161. The first connection portion 157 passes through the first mounting hole 117, the fixing hole 135, and the second mounting hole 121 in sequence. The first position-limiting portion 155 abuts against the outer sidewall of the first mounting portion 111. The second connecting portion 161 passes through the second mounting hole 121, the second connecting portion 161 is detachably connected to the first connecting portion 157, and the second limiting portion 159 abuts against an outer side wall of the second mounting portion 113. The first and second limiting portions 155 and 159 are configured to form a clamping force after the first fixing member 151 and the second fixing member 153 are coupled, so as to stably clamp the motor base 130 in the gap 115.

In other embodiments of the present application, the second fixing member 153 may also be disposed outside the second mounting hole 121. For example, the first fixing member 151 is a bolt, and the second fixing member 153 is a nut. The end of the bolt passes through the first mounting hole 117, the fixing hole 135 and the second mounting hole 121 in sequence and extends out of the outer side wall of the second mounting portion 113, and the nut is mounted on the extended portion of the bolt. The first fixing member 151 may also be a shaft, and the second fixing member 153 may also be a pin, by providing a pin hole on the shaft, by inserting the pin into the pin hole to fix the shaft within the first mounting hole 117, the fixing hole 135, and the second mounting hole 121. It is understood that the present embodiment does not limit the specific structures of the first fixing member 151 and the second fixing member 153 as long as the second fixing member 153 can fix the first fixing member 151 in the first mounting hole 117, the fixing hole 135, and the second mounting hole 121.

In other embodiments of the present application, the second fixing member 153 may also be disposed in the second mounting hole 121 or sequentially disposed through the second mounting hole 121 and the fixing hole 135 to be cooperatively connected with the first fixing member 151. It can be understood that, in the present embodiment, it is only necessary to ensure that the whole of the first fixing member 151 and the second fixing member 153 is inserted into the first mounting hole 117, the fixing hole 135 and the second mounting hole 121.

Referring to fig. 3 and 4, in the present embodiment, a threaded hole 162 is disposed at an end of the first connecting portion 157 away from the first limiting portion 155, and a thread engaged with the threaded hole 162 is disposed on a sidewall of the second connecting portion 161. The second connection portion 161 is mounted to the screw hole 162 of the first connection portion 157 by screw-fitting. The first connection portion 157 and the second connection portion 161 are screwed to facilitate removal and installation.

Referring to fig. 3 and 4, in the present embodiment, the horn device 100 includes a shock absorbing member 170, the shock absorbing member 170 is sleeved on the first fixing member 151, and the shock absorbing member 170 abuts against the motor base 130 to reduce the shock of the motor base 130. By providing the shock absorbing member 170, the motor base 130 can be damped and energy-absorbed to prevent the vibration generated by the movement of the power unit 200 from being transmitted to the fuselage 310, thereby affecting the normal flight of the rotorcraft 300.

Referring to fig. 3, 4, 7 and 8, in the present embodiment, the motor base 130 includes a matching portion 132, and the matching portion 132 includes a first sidewall 131 and a second sidewall 133 that are oppositely disposed. The fixing hole 135 penetrates the first and second sidewalls 131 and 133. The shock absorbing member 170 includes a first shock absorbing member 171. The first shock absorbing member 171 is provided with a first through hole 175, and the first shock absorbing member 171 is sleeved on the first fixing member 151 through the through hole. One end of the first damper 171 abuts against the first sidewall 131, and the other end is connected to the first mounting portion 111. By providing the first damper 171 between the first mounting portion 111 and the first sidewall 131, the motor mount 130 may be prevented from transmitting vibration to the first mounting portion 111.

In this embodiment, the first shock absorbing member 171 partially protrudes into the fixing hole 135, and an outer sidewall of the protruding portion of the first shock absorbing member 171 abuts against an inner wall of the fixing hole 135. By extending the first shock absorbing member 171 into the fixing hole 135, the outer sidewall of the first shock absorbing member 171 abuts against the inner wall of the fixing hole 135, so that the inner wall of the fixing hole 135 contacts with the first shock absorbing member 171 to limit the vertical vibration of the motor base 130.

Referring to fig. 3 to 9, in the present embodiment, the fixing hole 135 includes a first portion 137 and a second portion 139. The first and second portions 137 and 139 are located at both ends of the fixing hole 135, respectively. The first portion 137 has a flared shape with an increasing aperture in a direction away from the second portion 139. The first shock absorbing member 171 includes a first section 183 and a second section 185 connected in series. The first section 183 tapers in diameter away from the second section 185. First section 183 extends at least partially into first portion 137, and the outer sidewall of first section 183 abuts the inner wall of first portion 137. The second section 185 abuts the first mounting portion 111. The diameter of the first section 183 decreases gradually in a direction away from the second section 185, and the diameter of the first portion 137 increases gradually in a direction away from the second portion 139, so that the contact area between the first shock absorbing member 171 and the inner wall of the fixing hole 135 can be increased, and the shock absorbing effect can be improved.

In this embodiment, the first section 183 is mounted to the first mounting hole 117, and the outer sidewall of the first shock absorbing member 171 abuts against the inner wall of the first mounting hole 117. By extending the first damper 171 all the way to the first mounting hole 117, direct contact between the first fixing member 151 and the second mounting portion 113 may be reduced, so that vibration transmitted from the first fixing member 151 to the first fixing member 151 is reduced.

In this embodiment, the first damper 171 is provided with a first limit stop 179. The first limit stand 179 abuts against the outer side wall of the first mounting portion 111, and the first limit portion 155 abuts against the first limit stand 179. By abutting the first position-limiting platform 179 against the first position-limiting portion 155, the first fixing member 151 can be isolated from the first mounting portion 111, thereby reducing the occurrence of vibration.

In this embodiment, the outer side wall of the first mounting portion 111 is provided with a first groove 127, the first limit block 179 is mounted in the first groove 127, and the first limit block 179 abuts against the bottom wall of the first groove 127.

In this embodiment, the first shock absorbing member 171 is a rubber boot. Because the rubber sleeve has certain bearing capacity and shock absorption effect, the mounting base can be stably mounted on the arm base 110, and meanwhile, better shock absorption can be achieved.

In other embodiments of the present application, the first shock absorbing member 171 can be made of other materials, such as soft plastic.

Referring to fig. 3 to 9, in the present embodiment, the damping member 170 includes a second damping member 173. The second damping member 173 is provided with a second through hole 177, and the second damping member 173 is sleeved on the first fixing member 151 through the second through hole 177. One end of the second damper 173 abuts against the second side wall 133, and the other end is connected to the second mounting portion 113. The second damper 173 is disposed between the second mounting portion 113 and the motor base 130 to isolate the motor base 130 from directly contacting the second mounting portion 113, thereby reducing the transmission of vibration to the second mounting portion 113.

In the present embodiment, the second damper 173 partially extends into the fixing hole 135, and an outer sidewall of the second damper 173 at least partially abuts against an inner wall of the fixing hole 135. By extending the second damping member 173 into the fixing hole 135, the outer sidewall of the second damping member 173 abuts against the inner wall of the fixing hole 135, so that the inner wall of the fixing hole 135 contacts with the second damping member 173, and the vibration of the motor base 130 in the vertical direction can be limited.

In the present embodiment, the second portion 139 has an aperture that gradually increases toward a direction away from the first portion 137. The second damper 173 includes a third segment 187 and a fourth segment 189 connected in series, and the third segment 187 has a diameter gradually decreasing in a direction away from the fourth segment 189. The third segment 187 extends into the second portion 139, and an outer sidewall of the third segment 187 abuts against an inner wall of the second portion 139, and the fourth segment 189 abuts against the second mounting portion 113. The diameter of the third segment 187 is gradually decreased toward the direction away from the fourth segment 189, and the diameter of the second portion 139 is gradually increased toward the direction away from the first portion 137, so that the contact area of the second damper 173 with the inner wall of the fixing hole 135 can be increased, and the damping effect can be improved.

Referring to fig. 3 to 9, in the present embodiment, the fourth segment 189 is installed in the second installation hole 121, and an outer sidewall of the fourth segment 189 abuts against an inner wall of the second installation hole 121. By extending the second damper 173 all the way to the second mounting hole 121, direct contact between the first fixing member 151 and the second mounting portion 113 may be reduced, so that vibration transmitted from the first fixing member 151 to the first fixing member 151 is reduced.

In this embodiment, the second damper 173 is provided with a second stopper 181. The second limiting table 181 abuts against the outer side wall of the second mounting portion 113, and the second limiting portion 159 abuts against the second limiting table 181. By abutting the second limiting table 181 against the second limiting portion 159, the second fixing member 153 can be isolated from the second mounting portion 113, thereby reducing the occurrence of vibration.

In this embodiment, the outer sidewall of the second mounting portion 113 is provided with a second groove 129, the second limiting table 181 is mounted in the second groove 129, and the second limiting table 181 abuts against the bottom wall of the second groove 129.

In summary, in the embodiment, the first shock absorbing member 171 and the second shock absorbing member 173 are arranged to clamp the motor base 130 from two sides of the motor base 130, so that longitudinal vibration of the motor base 130 can be reduced. The first damper 171 and the second damper 173 respectively extend into the fixing hole 135 from two sides of the fixing hole 135 and abut against the inner wall of the fixing hole 135, so as to reduce the longitudinal vibration of the motor base 130. The first and second dampers 171 and 173 may completely isolate the motor base 130 from the first and second mounting parts 111 and 113, and cut off the vibration of the motor base 130 from being directly transmitted to the arm base 110. The first and second dampers 171 and 173 also completely isolate the first and second fixing members 151 and 153 from the first and second mounting portions 111 and 113, so that the vibration of the first and second fixing members 151 and 153 cannot be directly transmitted to the arm base 110, thereby achieving better damping and vibration stopping effects and preventing the body 310 from being affected by the vibration.

Referring to fig. 2, in the present embodiment, the number of the first fixing elements 151 includes two, the number of the second fixing elements 153 includes two, the first mounting portion 111 is provided with two first mounting holes 117, the motor base 130 is provided with two fixing holes 135, the number of the first shock absorbing elements 171 includes two, and the number of the second shock absorbing elements 173 includes two. The first fixing members 151 are mounted to the first mounting holes 117 and the fixing holes 135 in a one-to-one correspondence. The second fixing members 153 are mounted to the first fixing members 151 in a one-to-one correspondence. The first dampers 171 are mounted to the first fixing member 151 in a one-to-one correspondence, and the second dampers 173 are mounted to the first fixing member 151 or the second fixing member 153 in a one-to-one correspondence.

In other embodiments of the present application, the number of the first fixing member 151 and the second fixing member 153 may be one or more, and the number of the first mounting holes 117, the fixing holes 135, the second mounting holes 121, the first dampers 171 and the second dampers 173 is the same as the number of the first fixing member 151. The number of the first fixing member 151 and the second fixing member 153 is one, and only the first fixing member 151 needs to be ensured not to be a cylinder, and the first mounting hole 117 and the second mounting hole 121 need not to be cylindrical holes, so that the rotation of the motor base 130 after the connection is loosened is limited by the shape of the first fixing member 151 and the shape matching of the fixing hole 135 and the first mounting hole 117. It is understood that, in the present embodiment, the number of the first fixing member 151, the second fixing member 153, the first mounting hole 117, the fixing hole 135, the second mounting hole 121, the first damper 171, and the second damper 173 is not limited.

Referring to fig. 3, 4, 6 and 7, in the present embodiment, the motor base 130 is a plastic member to prevent the first fixing member 151 from wearing the fixing hole 135 of the motor base 130. The securing aperture 135 further includes a third portion 147, the third portion 147 being disposed solely between the first portion 137 and the second portion 139. The mating portion 132 is a metal sleeve 141, and the metal sleeve 141 is mounted to the third portion 147. One end of the metal sleeve 141 forms the first sidewall 131 and the other end of the metal sleeve 141 forms the second sidewall 133. The metal bushing 141 disposed in the fixing hole 135 may reduce wear of the motor mount 130.

Referring to fig. 2, in the present embodiment, the power device 200 includes a motor 210 and a propeller 230, and the motor 210 is disposed on the top of the mounting support 143. Propeller 230 is mounted to the rotor of motor 210.

In this embodiment, the horn device 100 further includes an electric tilt 250, and a mounting table is formed at a top portion of the second seat 125, and the electric tilt 250 is mounted on the mounting table.

The present embodiment provides operational distancing and benefits for rotorcraft 300 and horn device 100 including:

this application is through setting up first installation department 111 and second installation department 113 on horn base 110 for form clearance 115 between first installation department 111 and the second installation department 113, with motor cabinet 130 fixed mounting in clearance 115, the restriction through clearance 115 makes motor cabinet 130's fixed more stable. Through setting up first mounting hole 117 on first installation department 111, set up fixed orifices 135 on motor cabinet 130, utilize first mounting 151 to pass first mounting hole 117 and fixed orifices 135 in proper order, and let first mounting 151 be connected with second installation department 113, recycle second mounting 153 and the cooperation of first mounting 151 with motor cabinet 130 fixed mounting in the clearance 115 between first installation department 111 and second installation department 113, because first mounting 151 wears to locate first mounting hole 117 and fixed orifices 135 and is connected with second installation department 113, make the connection of motor cabinet 130 and horn base 110 simpler and more stable, thereby avoided at the fixed insecure quick-witted and the fried that arouse of motor cabinet 130.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (14)

1. The arm device is characterized by comprising an arm seat, a motor seat, a first fixing piece and a second fixing piece;

the aircraft arm seat is used for being connected with an aircraft body of a rotor aircraft and comprises a first installation part and a second installation part which are arranged oppositely, the first installation part is provided with a first installation hole, and a gap is formed between the first installation part and the second installation part;

the motor base is used for mounting a power device and is provided with a fixing hole;

the first fixing piece penetrates through the first mounting hole and the fixing hole in sequence, and the second fixing piece is matched with the first fixing piece so that the motor base is fixedly mounted in the gap.

2. The boom device of claim 1, wherein the second mounting portion has a second mounting hole, and the first fixing member and/or the second fixing member are disposed through the second mounting hole.

3. The arm device according to claim 2, wherein the first fixing member includes a first limiting portion and a first connecting portion that are connected to each other, the second fixing member includes a second limiting portion and a second connecting portion that are connected to each other, the first connecting portion sequentially passes through the first mounting hole, the fixing hole and the second mounting hole, the first limiting portion abuts against an outer side wall of the first mounting portion, the second connecting portion is detachably connected to the first connecting portion, and the second limiting portion abuts against an outer side wall of the second mounting portion.

4. An arm arrangement according to claim 3, wherein the first connection portion is a screw threaded engagement with the second connection portion.

5. The arm device according to claim 2, wherein the arm device comprises a shock absorber, the shock absorber is sleeved on the first fixing member and/or the second fixing member, and the shock absorber abuts against the motor base to reduce vibration of the motor base.

6. The arm apparatus of claim 5, wherein the motor base comprises an engaging portion, the engaging portion comprising a first side wall and a second side wall disposed opposite to each other; the fixing hole penetrates through the first side wall and the second side wall;

the damping piece comprises a first damping piece and a second damping piece;

the first shock absorption piece is provided with a first through hole, and the first shock absorption piece is sleeved on the first fixing piece through the first through hole;

one end of the first damping piece abuts against the first side wall, and the other end of the first damping piece abuts against the first mounting part;

the second damping piece is provided with a second through hole, and the second damping piece is sleeved on the first fixing piece or the second fixing piece through the second through hole;

one end of the second damping piece abuts against the second side wall, and the other end of the second damping piece abuts against the second mounting portion.

7. An arm device according to claim 6, wherein the fixing hole includes a first portion and a second portion, the first portion and the second portion being located at both ends of the fixing hole, respectively;

one end part of the first shock absorption piece extends into the first part, so that the outer side wall of the first shock absorption piece is abutted against the inner wall of the fixing hole;

the second shock absorbing part extends into the second part, so that the outer side wall of the second shock absorbing part is abutted against the inner wall of the fixing hole.

8. The arm device according to claim 7, wherein the diameter of the first portion increases gradually in a direction away from the second portion, the first damper includes a first section and a second section that are connected in sequence, the diameter of the first section decreases gradually in a direction away from the second section, the first section extends at least partially into the first portion, an outer side wall of the first section abuts against an inner wall of the first portion, and the second section abuts against the first mounting portion;

the aperture of the second part is gradually increased towards the direction far away from the first part, the second shock absorption piece comprises a third section and a fourth section which are sequentially connected, the diameter of the third section is gradually reduced towards the direction far away from the fourth section, at least part of the third section extends into the second part, the outer side wall of the third section is abutted against the inner wall of the second part, and the fourth section is abutted against the second mounting part.

9. An arm device according to any one of claims 6-8, wherein the first shock absorbing member is partly mounted in the first mounting hole, and the outer side wall of the first shock absorbing member abuts against the inner wall of the first mounting hole;

the second shock absorber part is arranged in the second mounting hole, and the outer side wall of the second shock absorber abuts against the inner wall of the second mounting hole.

10. The arm device according to any one of claims 6 to 8, wherein a first limiting table is disposed on the first damping member, the first fixing member includes a first limiting portion and a first connecting portion, the first connecting portion sequentially passes through the first mounting hole and the fixing hole and is connected to the second fixing member, the first limiting table abuts against an outer sidewall of the first mounting portion, and the first limiting portion abuts against the first limiting table;

the second shock absorption piece is provided with a second limiting platform, the second fixing piece comprises a second limiting portion and a second connecting portion, the second connecting portion is connected with the first connecting portion, the second limiting platform is abutted to the outer side wall of the second installation portion, and the second limiting portion is abutted to the second limiting platform.

11. The arm apparatus according to claim 6, wherein the fitting portion is a metal sleeve, the metal sleeve is mounted to the fixing hole, one end of the metal sleeve forms the first side wall, and the other end of the metal sleeve forms the second side wall.

12. The arm device according to claim 6, wherein the number of the first fixing members includes at least two, the number of the second fixing members includes at least two, the first mounting portion has at least two first mounting holes, the motor base has at least two fixing holes, the number of the first shock absorbing members includes at least two, and the number of the second shock absorbing members includes at least two;

the first fixing pieces are correspondingly arranged in the first mounting holes and the fixing holes one by one, and the second fixing pieces are correspondingly arranged in the first fixing pieces one by one;

the first shock absorption pieces are correspondingly arranged on the first fixing pieces one to one, and the second shock absorption pieces are correspondingly arranged on the first fixing pieces or the second fixing pieces one to one.

13. A boom arrangement according to any of claims 1-8, wherein the arm arrangement of the rotorcraft comprises a connecting rod, and wherein the arm base is provided with a connecting hole, one end of the connecting rod being mounted in the connecting hole and the other end being adapted to be connected to the fuselage.

14. A rotary wing aircraft, comprising a fuselage;

and a horn device as claimed in any one of claims 1 to 13, said horn base being mounted to said fuselage.

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