CN213414236U

CN213414236U - Mounting rack for airborne equipment outside helicopter cabin

Info

Publication number: CN213414236U
Application number: CN202022070810.8U
Authority: CN
Inventors: 石超峰; 常凯
Original assignee: Satpro M&c Tech Co ltd
Current assignee: Xi'an Dbs Communication Technology Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-06-11
Anticipated expiration: 2030-09-18

Abstract

The utility model provides an outboard airborne equipment mounting bracket of helicopter relates to the equipment technical field of cooperation aircraft, for solving prior art, the construction degree of difficulty that outboard airborne equipment mounting bracket of helicopter exists is big, repacking technical problem with high costs, the technical scheme of the utility model as follows: the mounting bracket includes: the fastening component is fixedly connected with the vibration isolator; the horizontal support plate is fixedly connected with the fastening assembly, the shape of the horizontal support plate is matched with that of a shell of the helicopter, a plurality of groups of through holes are formed in the horizontal support plate, and the positions of the through holes are matched with those of the shell holes; and the hole connecting piece penetrates through the through hole and the shell hole so as to connect the horizontal supporting plate with the helicopter.

Description

Mounting rack for airborne equipment outside helicopter cabin

Technical Field

The utility model relates to an equipment technical field of cooperation aircraft, in particular to helicopter extravehicular machine carries equipment fixing frame.

Background

Compared with a fixed-wing airplane, the helicopter does not need to build an airport, does not need a very long airport runway, does not need to spend a large amount of land resources, financial resources and material resources, and can vertically take off and land in a small area, so that the helicopter is widely applied to a plurality of fields such as transportation, patrol, tourism, rescue and the like.

In some special use cases, it is necessary to add external equipment, such as an onboard satellite communication system, outside the cabin of the helicopter, which is mainly used for solving the problem of limited high-altitude communication. At present, helicopters which undertake flight tasks in Qinghai-Tibet plateau areas and helicopters which execute sea flight tasks in China require to be provided with an airborne satellite communication system based on a Ku waveband, wherein communication equipment (communication equipment positioned on the helicopters) of an airborne section mainly comprises an external antenna, an antenna control unit, a power amplifier, a modem and wireless access equipment, and part of the equipment needs to be arranged outside a cabin, so that a specially designed mounting rack is needed for bearing the satellite communication equipment.

Traditional helicopter outbox machine carries equipment fixing bracket, but its fixed mode need punch in helicopter casing load bearing department, then through bolt fixed mounting, and this mode is big to helicopter casing change, has destroyed the original structure when the aircraft dispatches from the factory, has that the construction degree of difficulty is big, repacking shortcoming with high costs.

SUMMERY OF THE UTILITY MODEL

For solving prior art, the construction degree of difficulty that the aircraft carries the equipment fixing frame outside the helicopter cabin exists is big, repacking technical problem with high costs, the technical scheme of the utility model as follows:

the utility model provides an outboard machine carries equipment fixing frame of helicopter, the helicopter includes: the vibration isolator is used for reducing the vibration of the propeller, the shell hole is formed in the shell of the helicopter, and the shell screw is located in the shell hole. The following are specifically mentioned: the vibration isolator is usually an elastic device with certain damping, and the vibration isolator is installed in the transmission path of the vibration source to reduce the transmission of the vibration source, which is called vibration isolation, and in the field of helicopter manufacturing, the vibration isolator is a key device and is an elastic element arranged on a helicopter propeller and a cabin so as to reduce and eliminate the vibration force transmitted from the propeller to the cabin; the shell of the helicopter is not an integrally formed structure and is usually an assembly part, the shell hole is an original mounting hole arranged in the shell of the helicopter, and a shell screw is mounted in the shell hole so as to fix and assemble the helicopter shell in bulk. The utility model discloses in, utilize the original part of helicopter, under the condition that does not reform transform the helicopter, fix and assemble the mounting bracket, the concrete improvement point is: the fastening assembly is connected with the original vibration isolator of the helicopter and provides a main supporting point for the mounting frame; one side of the horizontal support plate is fixedly connected with the fastening assembly, the shape of the horizontal support plate is matched with the shape of the shell of the helicopter, a plurality of groups of through holes are formed in the horizontal support plate, the through holes are matched with the shell holes in position, and a plurality of main supporting points are provided for the mounting frame after the through holes are matched and connected with the shell holes. The specific installation steps are as follows: dismantle the casing screw is in order to expose the casing hole will horizontal support plate erects in the outside of helicopter is adjusted the through-hole makes the position corresponding and fixed through the hole connecting piece with original casing hole, horizontal support plate passes through fastening component fixed connection in the isolator, and then make the mounting bracket install in on the helicopter.

Taking the EC135P2 helicopter installation extravehicular equipment as an example, the original installation fixing mode needs to punch holes at the position where the helicopter casing can bear force, which destroys the original structure of the helicopter when leaving the factory, resulting in the strength reduction of the casing, and the punching process has large construction difficulty and high refitting cost. The utility model discloses but mainly utilized original helicopter self load point and original part, be connected one side and isolator of mounting bracket, simultaneously, dismantle the casing screw of corresponding position, utilize original mounted position, casing hole and change the jogged joint spare of appropriate length, and then accomplish the fixed and assembly of other positions of mounting bracket and casing. The utility model discloses avoided the hole site of traditional mounting means to join in marriage and beaten the operation, guaranteed the casing intensity of helicopter to the repacking construction is simple, the expense is low.

In one possible design, the fastening assembly includes a hoop; the staple bolt is the arc plate structure, the isolator is including setting up in outside support housing, and wherein support housing's effect prevents when the inside damping component became invalid, plays a supporting role. And the two hoops are matched and connected with the periphery of the support shell and are fastened through bolt and nut components.

Taking the EC135P2 helicopter as an example, the vibration isolator is arranged inside the ventilation hole at the lower side of the propeller, the fastening component extends into the ventilation hole, and the two anchor ears are sleeved outside the supporting shell and fastened through the bolt and nut component. It should be noted that the fastening assembly requires removal of the housing or the like before it can be inserted into the vent hole, to provide an operating space for workers and equipment.

Optionally, the hoop and the horizontal support plate may be connected by a bolt and nut assembly, or one hoop may be welded to the horizontal support plate, and the other hoop is connected to the other hoop by the bolt and nut assembly.

In one possible design, the fastening assembly further includes a splice block; the connecting block is used for connecting the hoop and the horizontal supporting plate, and the connecting part is fastened through a bolt and nut component. The assembly flexibility with further improvement fastening components, simultaneously, make the whole of mounting bracket be detachable structure, make things convenient for the mounting bracket prefabricated in the mill to be convenient for store and transport, spare part commonality is also stronger.

In one possible design, the horizontal support plate includes an integrally formed linear portion and an onboard equipment mounting portion, and the linear portion is connected with the engagement block. The straight line part is mainly used for matching with a vent hole channel of the EC135P2 helicopter and is used for connecting the airborne equipment mounting part with the vibration isolator. The onboard equipment installation part is a main installation platform, and the satellite communication equipment is installed on the onboard equipment installation platform.

Optionally, in order to ensure the strength of the straight line portion, the width of the straight line portion is matched with the pore canal of the vent as much as possible, and the width of the straight line portion is slightly smaller than the pore diameter of the vent.

In one possible design, the linear portion has a first reinforcing rib on both sides.

Wherein, the strengthening rib first mainly has two effects: firstly, in order to improve the strength of the linear part, the onboard equipment mounting part and the vibration isolator have a certain distance, and the force for connecting the two parts is provided by the linear part, so that the strength of the linear part needs to be ensured; and the first reinforcing rib is of a flanging structure, so that the side surface of the linear part has a certain width, and when the reinforcing rib is arranged in the vent hole channel, the contact area between the linear part and the vent hole channel can be increased, and the damage to the paint surface of the channel is reduced.

In one possible design, the onboard equipment mounting portion is provided with a plurality of through grooves for mounting onboard equipment.

Optionally, the through groove is a waist-shaped groove, a circular groove, etc., and functions as: firstly, in order to assemble airborne equipment; secondly, the self weight and the production cost are reduced.

In one possible design, further comprising: a bottom support plate disposed between the horizontal support plate and the helicopter case. Since the helicopter housing is not a flat surface, the bottom support plate needs to be designed to support the horizontal support plate.

Optionally, the bottom support plate may be fixedly connected with the horizontal support plate by a bolt and nut assembly, abutting against the helicopter housing; or the bottom supporting plate, the horizontal supporting plate and the helicopter shell are fixedly connected through hole connecting pieces, and at the moment, the bottom supporting plate and the helicopter shell hole are subjected to coordination design and the shell screw in the shell hole is disassembled.

In one possible design, the bottom support plate is provided with a second reinforcing rib, so that the strength of the bottom support plate is further improved.

In one possible design, the bore connection is a bolt and nut assembly, a pin, or a string. Preferably, the bolt and nut assembly is adopted, when in use, the through hole is aligned with the original shell hole, the bolt is penetrated into the helicopter from the outer side of the helicopter shell, and then the nut is screwed and installed in the helicopter.

In one possible design, the nut is a self-locking nut.

The main stress point of the common threaded fastener is only the contact part of the first thread and the second thread of the nut, and the other threads are basically not stressed, so when the tightening torque is large, the stress is concentrated at the first thread, the first thread is easy to bend and shear and deform, and only then, the second thread surface bears the stress and generates the locking force. By analogy, the load bearing surface transfers stress one by one, the threads are correspondingly sheared and abraded in sequence, shearing and abrasion damage of each tooth is serious, the strength of the nut and the threads is greatly reduced, and finally the threads are slid. And the thread of the self-locking nut is tightly propped against the 30-degree wedge-shaped inclined plane by all bolt tooth tips due to the unique structure, and the load borne by each tooth on the spiral line is relatively uniform, and the same load can be dispersed to each surface and each point, so that the anti-loosening friction force generated at each position on the thread is close, and the transverse vibration can be effectively resisted. It was investigated that the first load bearing face of the self-locking thread bears I7% load and the last load bearing face also bears 12.5% load. Therefore, each thread of the screw can bear load evenly, stress concentration does not exist, the problem of loosening or tooth slipping is not easy to occur, and the fatigue strength is improved in multiples.

Drawings

Fig. 1 is a schematic view of an embodiment of a mounting bracket for an outboard airborne device of a helicopter provided in the present invention;

FIG. 2 is a schematic view from another perspective of FIG. 1;

fig. 3 is a schematic view of a fastening assembly according to an embodiment of the present invention;

fig. 4 is a schematic view of a bottom support plate according to an embodiment of the present invention;

fig. 5 is a schematic view of a fastening assembly according to another embodiment of the present invention.

Reference numerals: 10. a vibration isolator; 11. a support housing; 20. a fastening assembly; 21. hooping; 22. a joining block; 30. a horizontal support plate; 31. a straight portion; 311. reinforcing ribs I; 32. an onboard equipment mounting part; 321. a through groove; 33. a through hole; 40. a bottom support plate; 41. a second reinforcing rib; 50. a hole connection piece.

Detailed Description

The technical solution of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "side", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on installation, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

It should be noted that, in the embodiments of the present invention, the same reference numerals are used to denote the same components or parts, and for the same components or parts in the embodiments of the present invention, only one of the components or parts may be used as an example to denote the reference numeral in the drawings, and it should be understood that the reference numerals are also applicable to other similar components or parts.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

As shown in fig. 1-5, the utility model provides an outboard airborne equipment mounting bracket of helicopter, the helicopter includes: vibration isolators 10 for reducing rotor vibration, a hull hole cut into the helicopter hull, and hull screws located in the hull hole. The following are specifically mentioned: the vibration isolator 10 is generally an elastic device with certain damping, and the vibration isolator 10 is a key device in the field of helicopter manufacturing, namely, an elastic element arranged between a helicopter propeller and a cabin and used for reducing and eliminating the vibration force transmitted to the cabin by the propeller, so as to reduce the transmission of the vibration source by installing the vibration isolator 10 in the transmission path of the vibration source, namely, vibration isolation; the shell of the helicopter is not an integrally formed structure and is usually an assembly part, the shell hole is an original mounting hole arranged in the shell of the helicopter, and a shell screw is mounted in the shell hole so as to fix and assemble the helicopter shell in bulk. The utility model discloses in, utilize the original part of helicopter, under the condition that does not reform transform the helicopter, fix and assemble the mounting bracket, the concrete improvement point is: the fastening component 20 is connected with the original vibration isolator 10 of the helicopter and provides a main supporting point for the mounting frame; horizontal support plate 30, one side and fastening component 20 fixed connection, horizontal support plate 30's shape and the shell shape phase-match of helicopter, and horizontal support plate 30 has seted up multiunit through-hole 33, and the position phase-match in the position of seting up position and the casing hole of through-hole 33, a plurality of through-holes 33 and casing hole cooperation are connected the back, provide a plurality of main strong points for the mounting bracket. The specific installation steps are as follows: the casing screws are disassembled to expose the casing holes, the horizontal support plate 30 is erected outside the helicopter, the adjusting through holes 33 correspond to the original casing holes in position and are fixed through the hole connecting pieces 50, the horizontal support plate 30 is fixedly connected to the vibration isolator 10 through the fastening assembly 20, and then the mounting frame is installed on the helicopter.

Taking the EC135P2 helicopter installation extravehicular equipment as an example, the original installation fixing mode needs to punch holes at the position where the helicopter casing can bear force, which destroys the original structure of the helicopter when leaving the factory, resulting in the strength reduction of the casing, and the punching process has large construction difficulty and high refitting cost. The utility model discloses but mainly utilized original helicopter self load point and original part, be connected one side and isolator 10 of mounting bracket, simultaneously, dismantle the casing screw of corresponding position, utilize original mounted position, casing hole and change the jogged joint spare 50 of appropriate length, and then accomplish the fixed and assembly of other positions of mounting bracket and casing. The utility model discloses avoided the hole site of traditional mounting means to join in marriage and beaten the operation, guaranteed the casing intensity of helicopter to the repacking construction is simple, the expense is low.

As shown in fig. 5, in one embodiment, the fastening assembly 20 includes a hoop 21; the hoop 21 is an arc-shaped plate structure, and the vibration isolator 10 includes a supporting housing 11 disposed outside, wherein the supporting housing 11 is used for supporting when the vibration damping element inside is prevented from failing. The two anchor ears 21 are connected to the periphery of the support housing 11 in a matching manner and are fastened through bolt and nut assemblies.

Taking an EC135P2 helicopter as an example, the vibration isolator 10 is located inside a ventilation hole on the lower side of a propeller, the fastening component 20 extends into the ventilation hole, and the two anchor ears 21 are sleeved outside the support shell 11 and fastened through the bolt and nut components. It should be noted that the fastening assembly 20 requires removal of the housing or the like before it can be inserted into the vent hole, to provide an operating space for workers and equipment.

In one embodiment, the anchor ear 21 and the horizontal support plate 30 can be connected by a bolt-nut assembly, or one anchor ear 21 can be welded to the horizontal support plate 30, and the other anchor ear 21 is connected to the two by a bolt-nut assembly.

As shown in fig. 3, in one embodiment, the fastening assembly 20 further includes an engagement block 22; the connecting block 22 is used for connecting the anchor ear 21 and the horizontal support plate 30, and the connection part is fastened through a bolt and nut component. With the assembly flexibility that further improves fastening assembly 20, simultaneously, make the whole of mounting bracket be detachable structure, make things convenient for the mounting bracket prefabricated in the mill to be convenient for store and transport, spare part commonality is also stronger.

As shown in fig. 1-2, in one embodiment, the horizontal support plate 30 includes a linear portion 31 and an onboard equipment mounting portion 32 that are integrally formed, and the linear portion 31 is connected to the engagement block 22. Straight portion 31 is intended primarily to match the vent opening of the EC135P2 helicopter for engaging airborne equipment mounting portion 32 with isolator 10. The onboard equipment mounting portion 32 is the primary mounting platform to which the satellite communication equipment is mounted.

In one embodiment, in order to ensure the strength of the straight portion 31, the width of the straight portion 31 is matched with the pore canal of the vent as much as possible, and the width of the straight portion 31 is slightly smaller than the aperture of the vent.

In one embodiment, the linear portion 31 has a first rib 311 on both sides. Wherein, the strengthening rib 311 mainly has two effects: firstly, in order to improve the strength of the linear portion 31, since the onboard equipment mounting portion 32 is spaced from the vibration isolator 10, and the force for connecting the two components is provided by the linear portion 31, the strength of the linear portion 31 needs to be ensured; secondly, the first reinforcing rib 311 is of a flanging structure, so that the side face of the linear portion 31 has a certain width, when the first reinforcing rib is arranged in the pore channel of the vent hole, the contact area between the linear portion 31 and the pore channel of the vent hole can be increased, and the damage to the paint surface of the pore channel is reduced.

In one embodiment, the onboard equipment mounting portion 32 defines a plurality of through slots 321 for mounting onboard equipment.

Preferably, the through groove 321 is a waist-shaped groove, a circular groove, etc., which functions as: firstly, in order to assemble airborne equipment; secondly, the self weight and the production cost are reduced.

As shown in fig. 4, in an embodiment, the method further includes: and a bottom support plate 40 disposed between the horizontal support plate 30 and the helicopter case. Since the helicopter housing is not a flat surface, it is necessary to design the bottom support plate 40 to support the horizontal support plate 30.

In one embodiment, the bottom support plate 40 may be fixedly connected to the horizontal support plate 30 by a bolt and nut assembly, abutting the helicopter case.

In one embodiment, the bottom support plate 40 is fixedly attached to the horizontal support plate 30 and the helicopter housing by the hole connectors 50, wherein the bottom support plate 40 is configured to engage the housing holes and remove the housing screws from the housing holes.

In one embodiment, the bottom support plate 40 has two ribs 41 to further increase the strength of the bottom support plate 40.

In one embodiment, the hole-connecting member 50 is a bolt-and-nut assembly, and in use, the through-hole 33 is aligned with the original casing hole and threaded through the bolt from outside the helicopter casing to the interior of the helicopter, and then the nut is screwed on the interior of the helicopter.

Preferably, the nut is a self-locking nut.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A helicopter extra-cabin airborne equipment mounting bracket, said helicopter comprising: a isolator (10) for reducing propeller vibration, set up in the casing hole of helicopter shell and be located the downthehole casing screw of casing, its characterized in that, the mounting bracket includes:

a fastening assembly (20) fixedly connected with the vibration isolator (10);

the horizontal support plate (30) is fixedly connected with the fastening assembly (20), the shape of the horizontal support plate (30) is matched with the shape of a shell of the helicopter, a plurality of groups of through holes (33) are formed in the horizontal support plate (30), and the positions of the through holes (33) are matched with the positions of the shell holes;

a hole connecting piece (50) penetrating through the through hole (33) and the shell hole so as to connect the horizontal support plate (30) with the helicopter;

the machine shell screw is disassembled to expose the machine shell hole, the horizontal support plate (30) is erected outside the helicopter and is connected through the hole connecting piece (50), the fastening component (20) is used for fixedly connecting the horizontal support plate (30) to the vibration isolator (10), and then the mounting frame is installed on the helicopter.

2. The helicopter extra-cabin airborne equipment mounting bracket of claim 1, characterized in that the fastening assembly (20) comprises a hoop (21); staple bolt (21) are the arc structure, isolator (10) are including setting up in outside support housing (11), two staple bolt (21) cooperation connect in the periphery of support housing (11) to fasten through bolt and nut subassembly.

3. The helicopter extra-cabin airborne equipment mounting bracket of claim 2, characterized in that the fastening assembly (20) further comprises a splice block (22); the hoop (21) and the horizontal support plate (30) are connected through the connecting block (22), and each connecting part is fastened through a bolt and nut component.

4. The helicopter extra-cabin equipment mounting deck according to claim 3, characterized in that the horizontal support plate (30) comprises an integrally formed straight portion (31) and an equipment mounting portion (32), the straight portion (31) being connected to the adapter block (22).

5. The mounting bracket for an outboard helicopter airborne device according to claim 4 wherein said straight portion (31) has a first reinforcement rib (311) on both sides.

6. The helicopter extra-cabin equipment mounting deck according to claim 4, characterized in that the equipment-mounting portion (32) is open with a plurality of through slots (321) for mounting equipment on board.

7. The helicopter extra-cabin airborne equipment mounting bracket of claim 1, said mounting bracket further comprising:

a bottom support plate (40) disposed between the horizontal support plate (30) and the housing of the helicopter.

8. The mounting rack for equipment onboard a helicopter nacelle according to claim 7, characterized in that said bottom support plate (40) has two reinforcing ribs (41).

9. The helicopter extra-cabin airborne equipment mounting bracket of claim 1, characterized in that said orifice connection (50) is a bolt and nut assembly, a pin or a wire.

10. A helicopter extra-cabin airborne equipment mounting bracket according to any one of claims 2, 3, 9, characterized in that said nut is a self-locking nut.