CN216332784U

CN216332784U - Helicopter airstair device capable of being quickly disassembled

Info

Publication number: CN216332784U
Application number: CN202122406233.XU
Authority: CN
Inventors: 秦鹏; 郇雯婷; 赵泽乾
Original assignee: Harbin Aircraft Industry Group Co Ltd
Current assignee: Harbin Aircraft Industry Group Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-19
Anticipated expiration: 2031-09-30

Abstract

The utility model provides a helicopter airstair device capable of being quickly disassembled, which belongs to the technical field of helicopter structure design and comprises the following components: the movable assembly comprises a fixed joint, a pedal, a pull rod, a support, an upright post and a cross beam, wherein the fixed joint is riveted on a machine body structure, the pedal is connected with the upright post, the upright post is connected with the cross beam, the pull rod is connected with the pedal through the support, the pedal, the pull rod, the support, the upright post and the cross beam are in screwed connection together to form a movable assembly which can be detached from the machine body, and the movable assembly is hinged with the fixed joint. This application can be under the carry task equipment state, the upper and lower helicopter of the more convenient safety of auxiliary personnel, and when carrying out not carry task equipment, can pull down fast to alleviate fuselage weight, be used for carriers such as helicopter or fixed facilities.

Description

Helicopter airstair device capable of being quickly disassembled

Technical Field

The application belongs to the technical field of helicopter structural design, and particularly relates to a quickly detachable helicopter airstair device.

Background

The airstairs are widely applied to helicopters, can help people to conveniently board and leave the airstairs, and have various forms, and are mainly divided into self-carrying airstairs and ground airstairs. The two airstairs have the advantages that the self-carrying airstairs have the advantages of convenient use and less ground-based working strength, and the ground airstairs have the advantages of not occupying the weight of an empty airplane and not occupying the space on the airplane.

In the related art, many general helicopters are modified, the performance of task equipment carried after modification is more and more advanced, the size of the task equipment is increased, and the situation that the task equipment blocks the entrance and exit channel of the cabin door occurs in use, so that a device is needed to help people to cross the task equipment.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the related art, the utility model provides a helicopter airstair device capable of being quickly unloaded, which comprises the following technical scheme:

a quick-release helicopter airstair apparatus comprising: a fixed joint, a pedal, a pull rod, a support, a stand column and a cross beam,

the fixed joint is riveted on the machine body structure, the pedal is connected with the upright column, the upright column is connected with the cross beam, the pull rod is connected with the pedal through the support, the pedal, the pull rod, the support, the upright column and the cross beam are connected in a screwed mode to form a movable assembly which can be detached from the machine body, and the movable assembly is hinged to the fixed joint.

Optionally, the movable assembly is provided with an ear piece, the fixed joint is provided with a bottom surface and an ear piece, the bottom surface is riveted with the machine body structure, and the ear piece is hinged with the ear piece on the movable assembly.

Optionally, the top of the pedal is a plane, an anti-slip layer is sprayed or adhered on the surface of the pedal, reinforcing ribs are distributed inside the pedal, one end of the pedal is provided with a lug piece hinged with the lug piece on the fixed joint, the other end of the pedal is provided with two holes connected with the upright post, the top of the pedal is screwed with the support,

the pull rod is a round tube with lug plates at two ends, one end of the pull rod is provided with a lug plate hinged with the lug plate on the fixed joint, the other end of the pull rod is hinged with the support,

the top of the stand is a cylindrical protruding structure and used for being inserted into the hole at the position corresponding to the pedal and fixed through a fastener, the bottom of the stand is provided with a hole and used for fixing the cross beam, and the two ends of the cross beam are provided with cylindrical protruding structures and used for being inserted into the hole at the position corresponding to the stand and fixed through a fastener.

Optionally, the middle part of the upright post is provided with a groove for reducing weight.

Optionally, the movable assembly is connected with the fixed joint through a quick-release pin, a bushing is installed at the joint of the quick-release pin, and the bushing can assist the movable assembly in automatic centering with the fixed joint during installation.

Optionally, the bushing is of a shoulder bushing structure, the shoulder edge of which is added with 1/3 circumferential arc-shaped flanges, and the arc-shaped flanges of the bushing are installed in the lug hole of the fixed joint 1 towards the upper side.

Optionally, a shoulder bushing is arranged at the connecting hole of the lug of the movable assembly, and a shoulder of the shoulder bushing is matched with the arc-shaped flanging of the bushing.

Optionally, the fixed joint, the pedal, the pull rod, the support, the upright post and the cross beam are formed by adding an aluminum alloy material.

Optionally, the bushing is a steel or copper alloy machined piece.

The utility model provides a helicopter airstair device capable of being quickly unloaded by researching human-computer efficacy, and assists personnel to get on and off a helicopter more conveniently and safely in a state of mounting task equipment. And when the task equipment is not mounted in the execution process, the task equipment can be quickly detached, so that the weight of the machine body is reduced.

Drawings

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

FIG. 2 is a schematic view of the connection of the steps, pillars and beams provided by the embodiment of the present invention;

FIG. 3 is a schematic view of a linkage between a pull rod and a pedal according to an embodiment of the present invention;

FIG. 4 is a schematic view of a movable assembly and a fixed joint according to an embodiment of the present invention;

FIG. 5 is a schematic view of a bushing to shoulder bushing mating connection according to an embodiment of the present invention;

fig. 6 is a schematic view of an installation of a helicopter airstair apparatus provided in an embodiment of the present invention.

Detailed Description

The present application will now be described in further detail with reference to the following detailed description of illustrative embodiments thereof, which are illustrated in the accompanying drawings.

The utility model provides a helicopter airstair device capable of fast unloading, as shown in figures 1 to 3, comprising: a fixed joint 1, a pedal 2, a pull rod 3, a support 4, a column 5 and a beam 6,

wherein, fixed joint 1 is riveted on fuselage structure, and footboard 2 is connected with stand 5, and stand 5 is connected with crossbeam 6, and pull rod 3 and footboard 2 pass through support 4 to be connected, and footboard 2, pull rod 3, support 4, stand 5 and crossbeam 6 spiro union are in the same place, constitute a movable assembly that can demolish from the fuselage, and movable assembly is articulated with fixed joint 1. The movable assembly and the fixed joint 1 can be connected through a quick-release pin.

Alternatively, the movable assembly may be provided with a tab, the fixed joint 1 is provided with a bottom surface and a tab, the bottom surface is riveted with the machine body structure, and the tab is hinged with the tab on the movable assembly.

The pedal 2 is used as the main part of the movable assembly, the top of the movable assembly is a plane, an anti-skid layer is sprayed or adhered on the surface of the movable assembly, reinforcing ribs are distributed in the pedal 2, one end of the pedal 2 is provided with a lug piece hinged with the lug piece on the fixed joint 1, the other end of the pedal 2 is provided with two holes connected with the upright post 5, the top of the pedal 2 is in threaded connection with a support 4, and the lug piece of the pedal 2 and the lug piece of the fixed joint 1 can be connected through a quick-release pin 7.

The pull rod 3 is a round pipe with lug plates at two ends and bears main Z-direction load, one end of the pull rod 3 is provided with a lug plate hinged with the lug plate on the fixed joint 1, the other end of the pull rod 3 is hinged with the support 4 through a fastener, and the lug plate of the pull rod 3 is connected with the lug plate on the fixed joint 1 through a quick-release pin 7.

The top of the upright post 5 is a cylindrical protruding structure and is used for being inserted into a hole at the corresponding position of the pedal 2 and fixed through a fastener, and the bottom of the upright post 5 is provided with a hole for fixing the cross beam 6. For example, the fastener may be a bolt.

The two ends of the beam 6 are provided with cylindrical protruding structures which are used for being inserted into holes at corresponding positions of the upright posts 5 and fixed through fasteners. Wherein the fastener may be a bolt.

Further, the middle part of the upright post 5 can be provided with a groove to reduce weight.

For example, as shown in fig. 4, the movable assembly and the fixed joint 1 may be connected by a quick release pin 7, a bushing 8 may be installed at the joint of the quick release pin 7, the bushing 8 is installed in a tab hole of the fixed joint 1 by interference fit or adhesive bonding, and the bushing 8 can assist the movable assembly to automatically center with the fixed joint 1 when installed. Fig. 4 shows a schematic view of the connection of the pedal 2 to the fixed joint 1.

Specifically, bushing 8 is a shoulder bushing configuration with the shoulder edge of the shoulder bushing configuration augmented with an 1/3 circumferential arcuate bead, the arcuate bead of bushing 8 fitting upwardly within the tab hole of fixed joint 1.

Further, as shown in fig. 5, a shoulder bush 9 is provided at the connection hole of the lug of the movable assembly, and a shoulder of the shoulder bush 9 is engaged with the arc-shaped flange of the bush 8. When the movable assembly is assembled, the lug of the movable assembly is only required to be inserted into the lug of the fixed joint 1, the convex shoulder of the convex shoulder bush 9 can be matched with the arc-shaped flanging of the bush 8 in a self-adaptive manner, the quick-release pin is inserted into the hole of the bush at the moment, and the arc-shaped flanging of the bush 8 provides support for the movable assembly in the process of inserting or pulling out the pin shaft, so that the physical consumption of an operator is reduced, and the operation efficiency is improved.

Further, the fixed joint 1, the pedal 2, the pull rod 3, the support 4, the upright post 5 and the cross beam 6 are formed by adding an aluminum alloy material.

Further, the bushing 8 is a steel or copper alloy machined piece.

As shown in fig. 6, when the quick-release helicopter airstair device provided by the utility model is assembled, a single aircraft can be respectively provided with 1 set of airstairs in bilateral symmetry. When boarding, a person firstly steps on the cross beam 6 and then steps on the pedal 2, the door is close to the pedal 2, and the pull rod 3 can be held by the person when climbing.

The quickly detachable helicopter airstair device provided by the utility model can assist personnel to get on and off the helicopter more conveniently and safely in a state of mounting task equipment. And when the task equipment is not mounted in the execution process, the task equipment can be quickly detached, so that the weight of the machine body is reduced. The airstair device has the characteristics of simple and convenient structure, easy operation and strong universality of installation interfaces, and can be suitable for helicopters of different models by reasonably arranging the fixed joints. Meanwhile, most parts of the airstairs are made of aluminum alloy materials, so that the airstairs have the advantages of light weight and low material and processing cost, the development period can be shortened, and the cost is reduced.

It should be noted that the helicopter airstair device capable of being quickly detached provided by the utility model is not limited to be applied in the field of helicopters, and can also be used for other vehicles or fixed facilities.

The foregoing is merely a detailed description of the embodiments of the present invention, and some of the conventional techniques are not detailed. The scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.

Claims

1. A quick-release helicopter airstair apparatus, comprising: a fixed joint (1), a pedal (2), a pull rod (3), a support (4), an upright post (5) and a cross beam (6),

the fixed joint (1) is riveted on a machine body structure, the pedal (2) is connected with the upright post (5), the upright post (5) is connected with the cross beam (6), the pull rod (3) is connected with the pedal (2) through the support (4), the pedal (2), the pull rod (3), the support (4), the upright post (5) and the cross beam (6) are connected together in a threaded manner to form a movable assembly which can be detached from the machine body, and the movable assembly is hinged with the fixed joint (1).

2. The device of claim 1, wherein the movable assembly is provided with a tab,

the fixed joint (1) is provided with a bottom surface and an ear piece, the bottom surface is riveted with the machine body structure, and the ear piece is hinged with the ear piece on the movable assembly.

3. The apparatus of claim 2,

the top of the pedal (2) is a plane, the surface of the pedal is sprayed or stuck with an anti-skid layer, the inside of the pedal is distributed with reinforcing ribs, one end of the pedal (2) is provided with a lug sheet hinged with the lug sheet on the fixed joint (1), the other end of the pedal is provided with a hole connected with the upright post (5), the top of the pedal (2) is connected with the support (4) in a threaded manner,

the pull rod (3) is a round tube with lug plates at two ends, one end of the pull rod (3) is provided with a lug plate hinged with the lug plate on the fixed joint (1), the other end of the pull rod is hinged with the support (4),

the top of stand (5) is cylindrical protruding structure for insert the hole department that footboard (2) correspond the position is fixed through the fastener, the bottom of stand (5) is equipped with the hole and is used for fixing crossbeam (6), crossbeam (6) both ends are equipped with cylindrical protruding structure, are used for inserting stand (5) correspond the hole department of position and fixed through the fastener.

4. The apparatus of claim 3,

the middle part of the upright post (5) is provided with a groove to reduce weight.

5. The apparatus of claim 3,

the movable assembly is connected with the fixed joint (1) through a quick-release pin (7), a bushing (8) is installed at the joint of the quick-release pin (7), and the bushing (8) can assist the movable assembly in automatic centering with the fixed joint (1) during installation.

6. The apparatus of claim 5,

the bushing (8) is of a shoulder bushing structure, an 1/3 circumferential arc-shaped flanging is added to the shoulder edge of the shoulder bushing structure, and the arc-shaped flanging of the bushing (8) is upwards installed in a lug hole of the fixed joint (1).

7. The apparatus of claim 6,

and a convex shoulder bush (9) is arranged at the connecting hole of the lug plate of the movable assembly, and a convex shoulder of the convex shoulder bush (9) is matched with the arc-shaped flanging of the bush (8).

8. The apparatus of claim 1,

the fixed joint (1), the pedal (2), the pull rod (3), the support (4), the upright post (5) and the cross beam (6) are formed by adding an aluminum alloy material.

9. The apparatus of claim 5,

the bushing (8) is a steel or copper alloy machining piece.