CN212448107U - Helicopter outboard objective table - Google Patents

Abstract

The utility model provides a helicopter cabin outer objective table relates to the equipment technical field of cooperation aircraft, for solving prior art, the construction degree of difficulty that helicopter cabin outer objective table exists is big, repacking technical problem with high costs, the technical scheme of the utility model as follows: comprises a mounting frame for supporting the object stage; the shape of the mounting rack is matched with the external shape of the helicopter to be mounted, a plurality of groups of through holes are formed in the mounting rack, and the forming positions of the through holes are matched with the positions of shell screws of the helicopter to be mounted; dismantle the casing screw of treating the installation helicopter in order to expose original casing hole, will the mounting bracket erects in the outside of treating the installation helicopter, adjusts the through-hole makes the position corresponding and fixed through the fastener with original casing hole, and then makes mounting bracket fixed connection is on treating the installation helicopter.

Description

Helicopter outboard objective table

Technical Field

The utility model relates to an equipment technical field of cooperation aircraft, in particular to helicopter extravehicular objective table.

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, in China, helicopters which undertake flight tasks in Qinghai-Tibet plateau areas and helicopters which execute sea flight tasks have long required 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 cabin outer carrier table of the helicopters is needed to bear the equipment.

Traditional helicopter extravehicular objective table, its fixed mode need punch in helicopter casing can the load department, then through bolt fixed mounting, and this mode is big to helicopter casing change, has destroyed the original structure when the aircraft leaves 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 outer objective table of helicopter cabin exists is big, repacking technical problem with high costs, the technical scheme of the utility model as follows:

in a first aspect, the utility model provides a helicopter cabin outer objective table, including the mounting bracket that is used for supporting the objective table, the mounting bracket is the utility model discloses well objective table's key equipment, mainly used connect the casing of helicopter, guarantee with the joint strength of helicopter and provide the holding power for the objective table. The concrete structure of mounting bracket does: the shape of mounting bracket and the external shape phase-match of waiting to install the helicopter, whole the erection is in the outside of waiting to install the helicopter, the multiunit through-hole has been seted up with the junction of waiting to install the helicopter to the mounting bracket, and the offer position of through-hole and the position phase-match of the dismantlement screw in advance of waiting to install the helicopter casing, namely, the casing of helicopter adopts the screw to connect usually, when the mounting bracket is whole to erect in the outside of waiting to install the helicopter, the through-hole of mounting bracket can the phase-match with the screw position of casing, and then can dismantle the screw of casing, carry out the mounting bracket assembly with its original casing. The method comprises the following specific steps: according to the design of the mounting rack, the screws of the helicopter shell to be mounted are dismounted to expose the original shell holes of the corresponding positions, the mounting rack is erected outside the helicopter to be mounted, the through holes are aligned with the original shell holes and fixed through fasteners, and then the mounting rack is mounted on the helicopter to be modified.

Taking the instance of installing extravehicular equipment on the BELL-407 helicopter as an example, the original installation and fixing mode needs to punch holes at the position where the helicopter casing can bear force, thus destroying the original structure of the helicopter when leaving the factory, leading to the strength reduction of the casing, and having large construction difficulty and high modification cost in the punching process. The utility model discloses but mainly utilized original helicopter self load point and hull hole, dismantle before the repacking and fall the casing screw of corresponding position, utilize original mounted position, hull hole and change the construction bolt of appropriate length, and then accomplish the fixed connection of mounting bracket and casing, avoided the joining in marriage of hole site to beat, guaranteed the casing intensity of helicopter to the repacking construction is simple, the expense is low.

In one possible design, the mounting frame includes a cross beam and two side beams, which are perpendicularly disposed at both ends of the cross beam, so that the mounting frame is of a U-shaped structure. The mounting bracket is the overall structure of rectangle, is for the convenience of the production and processing and the installation of raw materials, all is the linear type structure like crossbeam and curb girder, convenient production, and is more convenient when the concatenation mounting bracket. The tail ends of the side beams, which are far away from the connection part of the cross beams, are provided with through holes, screws at corresponding positions on two sides of the helicopter to be installed are disassembled to expose the original shell holes, and the through holes of the side beams are connected with the original shell holes through bolts and nuts, so that the two side beams are installed on two sides of the helicopter to be installed.

Taking the example of installing extravehicular equipment on a BELL-407 helicopter, the corresponding positions of two sides of the helicopter are as follows: the number of the glass of the cockpit door is counted towards the tail direction, and the shell is arranged between the second glass and the third glass. The both sides of helicopter are used for connecting the curb girder respectively, provide the holding power for the mounting bracket.

In one possible design, the middle part of the cross beam is also provided with a supporting base, the bottom part of the cross beam is provided with a through groove along the direction vertical to the cross beam, and the groove walls at the two sides of the through groove are provided with through holes; the through groove is inserted with the installation convex edge of the thread cutting device of the helicopter to be installed, and the through hole of the through groove is connected with the original shell hole of the installation convex edge of the thread cutting device through a bolt and a nut, so that the supporting base is installed on the installation convex edge of the thread cutting device of the helicopter to be installed.

The device is characterized in that a BELL-407 helicopter is used for installing equipment outside a cabin as an example, the helicopter is provided with a wire cutter when leaving a factory (the wire cutter has the effects that when the helicopter collides a high-voltage wire, an electric wire and the like, the upper part and the lower part of the wire cutter are inclined, the wire slides to a cutting groove due to impact, the outer part of the cutting groove is wide and the inner part of the cutting groove is narrow, the wire can be gradually cut from the outer layer to the inner end of the cutting groove when sliding to the inner part of the cutting groove), and the wire cutter is installed on an installation convex edge at the middle frame of a windshield of the helicopter and is provided with four shell holes. When the supporting base is installed, the screw and the wire cutter are firstly detached, the supporting base is connected with the installation convex edge of the middle frame of the windshield in an inserting mode, the through hole is connected with the original shell hole through the bolt and the nut, and then the supporting base is installed at the middle frame of the windshield and serves as a main force bearing point of the whole installation frame.

In one possible design, the mounting frame further comprises a right-angle brace; the right angle brace is fixedly connected with the right angle joint of the cross beam and the side beam. The right angle props the joint strength who is used for guaranteeing crossbeam and curb girder, and then improves the holistic stability of mounting bracket.

The right-angle support is only used for fixedly connecting the cross beam and the side beam and is not connected with the helicopter shell.

In one possible design, the mounting frame further comprises a support bottom beam; the supporting bottom beam and the cross beam are arranged in parallel and fixedly connected to the lower side of the side beam, and the middle part of the supporting bottom beam is provided with a supporting block which is fixedly connected with the upper part of the helicopter to be installed. The stability of mounting bracket is further improved.

Taking the example of mounting extravehicular equipment on a BELL-407 helicopter, the support bottom beam is connected to the upper outer frame of the windshield.

In one possible design, the cross beam, the side beam, the support base, the right-angle support, the support bottom beam and the support block are connected with each other through bolts and nuts. Through bolt and nut fixed connection, the dismouting of being convenient for, and stability is strong.

Alternatively, the connection mode between the parts of the mounting rack may be a fixed connection mode such as welding or bonding, besides the connection mode of the bolt and the nut.

In one possible design, a stage body is also included; the object stage body is fixedly connected to the upper portion of the mounting frame, and the middle portion of the object stage body is provided with a plurality of hollow-out structures and a plurality of groups of mounting holes used for connecting objects.

Wherein, the hollow out construction that the objective table body had is in order to reduce the objective table body dead weight, reduction in production cost simultaneously.

Optionally, the stage body is fixedly connected to the upper portion of the mounting frame by bolts and nuts, welding, and adhesion.

Alternatively, the equipment can be directly fixedly connected to the mounting frame without using the carrier body.

In a possible design, the bottom of objective table body has the bracing piece, and the one end and the objective table body fixed connection of bracing piece, the through-hole is seted up to the other end, dismantles the screw in order to expose original casing hole of the corresponding casing position of waiting to install the helicopter, and the through-hole of bracing piece passes through bolt and nut with the original casing hole of corresponding casing position to be connected, and then makes the bracing piece install on waiting to install the helicopter.

Taking the example of installing extravehicular equipment on a BELL-407 helicopter, the corresponding shell positions of the helicopter are as follows: the number of the glass of the cockpit door is taken as the starting point and is counted towards the tail direction, and the shell is arranged between the first glass and the second glass. The supporting rod is used for connecting the supporting rod and providing supporting force for the object stage body.

In one possible design, the fastener is a bolt and nut assembly, a pin, or a wire rope. 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 extra-cabin stage of a helicopter according to an embodiment of the present invention;

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

fig. 3 is a schematic view of a supporting base according to an embodiment of the present invention.

Reference numerals: 11. a cross beam; 12. a side beam; 13. a support base; 131. a through groove; 14. a right-angle brace; 15. supporting the bottom beam; 16. a support block; 20. an objective table body; 21. a support bar; 30. and a through hole.

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. 1-2, the present embodiment provides an extra-cabin object stage of a helicopter, which includes a mounting bracket for supporting the object stage, where the mounting bracket is a key device of the object stage in the present embodiment, and is mainly used to connect a casing of the helicopter, ensure connection strength with the helicopter, and provide supporting force for the object stage. The concrete structure of mounting bracket does: the shape of mounting bracket and the external shape phase-match of waiting to install the helicopter, whole the erection is in the outside of waiting to install the helicopter, multiunit through-hole 30 has been seted up with the junction of waiting to install the helicopter to the mounting bracket, and the offer position of through-hole 30 and the position phase-match of the dismantlement screw in advance of waiting to install the helicopter casing, namely, the casing of helicopter adopts the screw to connect usually, when the mounting bracket is whole to erect in the outside of waiting to install the helicopter, the through-hole 30 of mounting bracket can the phase-match with the screw position of casing, and then can dismantle the screw of casing, carry out the mounting bracket assembly with its original casing hole. The method comprises the following specific steps: according to the design of mounting bracket, dismantle the screw of treating the installation helicopter casing in order to expose the original casing hole in relevant position, erect the mounting bracket in the outside of treating the installation helicopter, through-hole 30 with original casing hole coaxial align and penetrate the bolt to the helicopter inside from the helicopter casing outside, then twist at the helicopter inside and twist the installation nut, and then make the mounting bracket install on treating to change the helicopter.

Taking the instance of installing extravehicular equipment on the BELL-407 helicopter as an example, the original installation and fixing mode needs to punch holes at the position where the helicopter casing can bear force, thus destroying the original structure of the helicopter when leaving the factory, leading to the strength reduction of the casing, and having large construction difficulty and high modification cost in the punching process. But this embodiment has mainly utilized original helicopter self force bearing point and casing hole, dismantles the casing screw that falls corresponding position before the repacking, utilizes original mounted position, casing hole and changes the construction bolt of appropriate length, and then accomplishes the fixed connection of mounting bracket and casing, has avoided the joining in marriage of hole site to beat, has guaranteed the casing intensity of helicopter to the repacking construction is simple, the expense is low.

In one embodiment, the mounting frame comprises a cross beam 11 and side beams 12, and the two side beams 12 are vertically arranged at two ends of the cross beam 11, so that the mounting frame has a rectangular structure. The mounting bracket is rectangular overall structure, so that the production, processing and installation of raw materials are facilitated, and if the cross beam 11 and the side beam 12 are of linear structures, the mounting bracket is convenient to produce and more convenient to splice.

In one embodiment, the ends of the side beams 12 far from the joint of the cross beams 11 are provided with through holes 30, screws at corresponding positions on both sides of the helicopter to be installed are removed to expose the original casing holes, and the through holes 30 of the side beams 12 are connected with the original casing holes through bolts and nuts, so that the two side beams 12 are installed on both sides of the helicopter to be installed.

Taking the example of installing extravehicular equipment on a BELL-407 helicopter, the corresponding positions of two sides of the helicopter are as follows: the number of the glass of the cockpit door is counted towards the tail direction, and the shell is arranged between the second glass and the third glass. The two sides of the helicopter are respectively used for connecting the side beams 12 to provide supporting force for the mounting frame.

As shown in fig. 3, in one embodiment, the mounting frame further comprises a support base 13; the supporting base 13 is fixedly connected to the middle part of the cross beam 11, a through groove 131 is formed in the bottom part of the supporting base along the direction vertical to the cross beam 11, and through holes 30 are formed in groove walls on two sides of the through groove 131; the through groove 131 is inserted into the installation convex edge of the thread cutting device of the helicopter to be installed, and the through hole 30 of the through groove 131 is connected with the original shell hole of the installation convex edge of the thread cutting device through a bolt and a nut, so that the supporting base 13 is installed on the installation convex edge of the thread cutting device of the helicopter to be installed.

The device is characterized in that a BELL-407 helicopter is used for installing equipment outside a cabin as an example, the helicopter is provided with a wire cutter when leaving a factory (the wire cutter has the effects that when the helicopter collides a high-voltage wire, an electric wire and the like, the upper part and the lower part of the wire cutter are inclined, the wire slides to a cutting groove due to impact, the outer part of the cutting groove is wide and the inner part of the cutting groove is narrow, the wire can be gradually cut from the outer layer to the inner end of the cutting groove when sliding to the inner part of the cutting groove), and the wire cutter is installed on an installation convex edge at the middle frame of a windshield of the helicopter and is provided with four shell holes. When the supporting base 13 is installed, the screw and the thread cutter are firstly detached, the supporting base 13 is connected with the middle frame of the windshield in an inserting mode, the through hole 30 is connected with the original shell hole through a bolt and a nut, and then the supporting base 13 is installed at the middle frame of the windshield and serves as a main force bearing point of the whole installation frame.

In one embodiment, the mounting bracket further comprises a right angle brace 14; the right-angle brace 14 is fixedly connected to the right-angle joint of the cross beam 11 and the side beam 12. The right-angle brace 14 is used for ensuring the connection strength of the cross beam 11 and the side beam 12, and further improving the overall stability of the mounting frame.

In one embodiment, the mounting frame further comprises a support bottom beam 15; the supporting bottom beam 15 is arranged in parallel with the cross beam 11 and is fixedly connected to the lower side of the side beam 12, and the middle part of the supporting bottom beam is provided with a supporting block 16 which is fixedly connected with the upper part of the helicopter to be installed. The stability of mounting bracket is further improved.

In the case of the BELL-407 helicopter outboard equipment installation, the support bottom beam 15 is attached to the upper outer frame of the windshield.

In one embodiment, the cross beam 11, the side beam 12, the support base 13, the right angle brace 14, the support base beam 15 and the support block 16 are connected to each other by bolts and nuts. Through bolt and nut fixed connection, the dismouting of being convenient for, and stability is strong.

In one embodiment, a stage body 20; the objective table body 20 is fixedly connected to the upper portion of the mounting frame, and the middle portion of the objective table body is provided with a plurality of hollow-out structures and a plurality of groups of mounting holes for connecting articles. Wherein, the hollow out construction that objective table body 20 has is in order to reduce objective table body 20 dead weight, reduction in production cost simultaneously.

Alternatively, the stage body 20 may not be used, and the equipment may be directly fixedly attached to the mounting bracket.

In one embodiment, the bottom of the stage body 20 has a support rod 21, one end of the support rod 21 is fixedly connected to the stage body 20, the other end is provided with a through hole 30, a screw at a corresponding housing position of the helicopter to be installed is detached to expose an original housing hole, the through hole 30 of the support rod 21 is connected to the original housing hole at the corresponding housing position by a bolt and a nut, and the support rod 21 is installed on the helicopter to be installed.

Preferably, the support bar 21 has two, one of which provides the integral base support and the other of which provides the function of the right angle brace 14.

Taking the example of installing extravehicular equipment on a BELL-407 helicopter, the corresponding shell positions of the helicopter are as follows: the number of the glass of the cockpit door is taken as the starting point and is counted towards the tail direction, and the shell is arranged between the first glass and the second glass. For connecting the support rod 21 and providing a supporting force for the stage body 20.

In one embodiment, 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 (10)

1. A helicopter extra-cabin object stage is characterized by comprising a mounting frame for supporting the object stage; the shape of the mounting rack is matched with the external shape of the helicopter to be mounted, a plurality of groups of through holes (30) are formed in the mounting rack, and the forming positions of the through holes (30) are matched with the positions of shell screws of the helicopter to be mounted; dismantle the casing screw of treating the installation helicopter in order to expose original casing hole, will the mounting bracket erects in the outside of treating the installation helicopter, adjusts through-hole (30) make the position corresponding and fixed through the fastener with original casing hole, and then make mounting bracket fixed connection is on treating the installation helicopter.

2. The helicopter deck according to claim 1, characterized in that the mounting frame comprises a cross beam (11) and a side beam (12); the two side beams (12) are arranged at two ends of the cross beam (11), so that the mounting frame is of a U-shaped structure; the through holes (30) are formed in one ends, far away from the cross beams (11), of the side beams (12), and the two side beams (12) are fixedly connected to two sides of the helicopter to be installed through the fasteners.

3. The extra-cabin object stage of the helicopter of claim 2, characterized in that the middle of the cross beam (11) is further provided with a support base (13), the bottom of the support base (13) is provided with a through groove (131) along a direction perpendicular to the cross beam (11), the through groove (131) is used for being inserted into a thread cutter mounting flange of the helicopter to be installed, the groove walls on two sides of the through groove (131) are provided with through holes (30), and the support base (13) is fixedly connected to the thread cutter mounting flange of the helicopter to be installed through the fastener.

4. A helicopter extra-cabin object table according to claim 3, characterized in that said mounting frame further comprises a right-angled brace (14); the right-angle support (14) is fixedly connected to the connecting position of the cross beam (11) and the side beam (12).

5. The helicopter deck according to claim 4, characterized in that the mounting frame further comprises a support bottom beam (15); the supporting bottom beam (15) and the cross beam (11) are arranged in parallel and fixedly connected to the lower side of the side beam (12), and the middle part of the supporting bottom beam is provided with a supporting block (16) fixedly connected with the upper part of the helicopter to be installed.

6. A helicopter extra-cabin object table according to claim 5, characterized in that the cross beams (11), the side beams (12), the support bases (13), the quarter braces (14), the support bottom beams (15) and the support blocks (16) are connected to each other by means of fasteners.

7. The helicopter extra-cabin object table of any of claims 1-6, further comprising an object table body (20); the object stage body (20) is fixedly connected to the upper portion of the mounting frame through a fastener, a plurality of hollow structures are arranged in the middle of the object stage body, and a plurality of groups of mounting holes used for connecting objects are formed in the middle of the object stage body.

8. The helicopter deck according to claim 7, characterized in that the bottom of the deck body (20) has a support bar (21), one end of the support bar (21) is fixedly connected to the deck body (20), and the other end is provided with a through hole (30), and the support bar (21) is fixedly connected to the helicopter to be installed by the fastener.

9. The helicopter deck of claim 8 wherein the fasteners are bolt and nut assemblies, pins, or wire rope.

10. A helicopter extra-cabin object table according to claim 9, characterized in that said bolt-nut assembly employs a self-locking nut.

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