CN105109670A - Horizontal tail connection device for helicopter - Google Patents

Abstract

The invention belongs to the technology of a horizontal tail of a helicopter, in particular to a horizontal tail connection device for the helicopter. The horizontal tail connection device is provided with a fuselage connection joint, one side of the fuselage connection joint is combined and connected to a rear fuselage structure through a bolt, and double fork ears used for being connected with the horizontal tail are arranged at the top of the other side of the fuselage connection joint. The double fork ears are connected with mounting holes preformed in a girder of the horizontal tail through connecting bolts, connecting nuts and adjusting gaskets. The connection device capable of quickly dismounting and mounting the horizontal tail of the helicopter can dismount the horizontal tail only by manually dismounting the bolts without a large tool and is convenient to maintain the horizontal tail of the helicopter.

Description

Connecting device for helicopter horizontal tail

technical field

The invention belongs to the helicopter horizontal tail technology, in particular to a helicopter horizontal tail connecting device.

Background technique

The helicopter's horizontal tail is generally installed on the tail in a horizontal state. It is a horizontal stabilizer and plays a role in pitch stabilization. At present, most helicopters adopt the method of installing the flat tail on the tail boom, and reserve the hole position of the flat tail airfoil by the tail boom, and then fix the flat tail by installing a bolt on both sides. This installation method is very difficult to manufacture when reserving the hole position of the flat-tail airfoil, and once installed, it is almost impossible to disassemble it, and it must be returned to the factory for repair, and the manufacturing and maintenance costs are high. Alternatively, the flat tail can be divided into two parts and riveted on both sides of the vertical tail respectively. In this installation method, the flat tail itself is a part of the fuselage and cannot be disassembled. It must be returned to the factory for maintenance, and the vertical tail structure must be maintained at the same time, which is time-consuming and laborious.

In particular, unlike the fixed-wing aircraft's horizontal tail, the helicopter's horizontal tail is relatively small in size and has a closed space. It is difficult to maintain the original resonance frequency through maintenance when it is damaged by external forces in the field environment. Therefore, it is very easy to cause safety hazards and adversely affect flight safety. .

Contents of the invention

The object of the present invention is to provide a connecting device capable of quickly disassembling and assembling the helicopter's flat tail.

The technical solution of the present invention is: a helicopter horizontal tail connection device, which has a fuselage connection joint, one side of the fuselage connection joint is connected to the rear fuselage structure with bolts, and the top of the other side is provided with a The connected double fork lug is connected with the reserved mounting hole on the main beam of the horizontal tail with connecting bolts, connecting nuts and adjusting washers.

A triangular support structure is formed between the fuselage connection joints at the base of the double-fork lugs.

The triangular support structure is a hollow structure.

The bolt combination forms 3 support points on the top of the fuselage connection joint, and 2 support points on both sides of the bottom of the fuselage connection joint.

The advantages of the present invention are: the connecting device of the helicopter's horizontal tail of the invention connects the horizontal tail, and when dismounting, no large tool is needed, and the horizontal tail can be disassembled only by manually disassembling the bolts, thereby effectively avoiding errors caused by complex assembly, and the installation and positioning are accurate and the connection form is simple , which greatly facilitates the maintenance of the helicopter's flat tail.

Description of drawings

Fig. 1 is the structural representation of helicopter horizontal tail connecting device of the present invention;

Fig. 2 is a schematic side view of the helicopter's horizontal tail connecting device;

Fig. 3 is an exploded view of the parts of the helicopter's horizontal tail connecting device;

Fig. 4 is the installation sketch map of helicopter horizontal tail connecting device;

Figure 5 is a schematic diagram of disassembly of the helicopter's horizontal tail connection device,

Wherein, 1 is the connecting joint of the fuselage, 2 is the connecting bolt, 3 is the connecting nut, 4 is the adjusting washer, and 5 is the combination of bolts.

Detailed ways

The present invention will be described in further detail below.

Please refer to Fig. 1, the connecting device of helicopter horizontal tail of the present invention has a fuselage connecting joint 1, and this fuselage connecting joint 1 side uses bolt combination 5 to be connected on the rear fuselage structure, and the top of the other side is provided with for connecting with horizontal tail The double fork ear is connected with the mounting hole reserved on the main beam of the flat tail with the connecting bolt 2, the connecting nut 3 and the adjusting gasket 4. In this way, the plug and play of the flat tail can be realized, errors caused by complex assembly can be avoided, the installation and positioning are accurate, and the connection form is simple.

A triangular support structure is formed between the roots of the double-fork lugs of the fuselage connection joint to maximize the strength.

The triangular support structure is a hollow structure, which can effectively reduce the structural weight.

The bolt combination 5 forms 3 support points on the top of the fuselage connection joint, and 2 support points on both sides of the bottom of the fuselage connection joint. The bolt assembly 5 used for connecting the fuselage is connected with the rear beam of the helicopter fuselage by these 5 support points.

When installing, pull out the connecting bolt 2 and insert the horizontal tail into the double-fork ear of the fuselage connecting joint 1 in the horizontal direction, insert the connecting bolt 2, and insert the 2 connecting bolts in the mounting holes reserved for the main beam of the horizontal tail 2 plays the role of the pin for fixing the horizontal tail, after eliminating the gap between the horizontal tail and the fuselage connecting joint 1 by adjusting the gasket 4, lock it with the connecting nut 3.

When dismounting, unload the connecting nut 3, extract the connecting bolt 2, and pull out the horizontal stabilizer in reverse along the horizontal direction, and then the horizontal stabilizer can be unloaded.

The helicopter horizontal tail connecting device of the present invention connects the horizontal tail. When disassembling, the horizontal tail can be disassembled only by manually disassembling the bolts without the need of large tools, thereby effectively avoiding errors caused by complex assembly, and the installation and positioning are accurate, and the connection form is simple, which is very convenient. Helicopter tail maintenance.

Claims (4)

1. a helicopter horizontal tail connecting device, it is characterized in that, there is a fuselage jointing (1), this fuselage jointing (1) side uses bolt combination (5) to be connected in rear fuselage structure, opposite side top is provided with two pitch ear for what be connected with horizontal tail, this couple of fork ear tie bolt (2), coupling nut (3), regulates pad (4) to be connected with the mounting hole that horizontal tail girder is reserved.

2. helicopter horizontal tail connecting device according to claim 1, is characterized in that, is formed with a triangular support configurations between this pair of fork basal part of the ear portion fuselage jointing (1).

3. helicopter horizontal tail connecting device according to claim 2, is characterized in that, described triangular support configurations is hollow structure.

4. helicopter horizontal tail connecting device according to claim 3, is characterized in that, bolt combination (5) forms 3 strong points at fuselage jointing top, forms 2 strong points in fuselage jointing two bottom sides.