JPH056240Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to an attachment structure for operating cables in a barrier.

In other words, it relates to an emergency barrier that brakes the aircraft at the end of the runway if the aircraft does not stop at the scheduled point on the runway.

"Conventional technology" First, we will discuss its technical background.

The barrier is installed at the end of the runway and hooks the nose landing gear of the aircraft to its working cables, which flips up a capture cable connected to the working cables to catch the main landing gear of the aircraft, and then the aircraft It is designed to brake.

Now, the operating cable needs to be hooked to the nose gear of the aircraft at a predetermined height position, and the capture cable also needs to be hooked to the main landing gear of the aircraft at a predetermined height position, and only then can the barrier be removed. functions normally. In order for the operating rope and the capture cable to be hooked at a predetermined height position in this manner, it is necessary that the operating rope and the capture cable maintain a constant distance at all times.

The technical background is as above.

By the way, the mounting structure of such a working rope has conventionally been as follows.

FIG. 3 is a perspective view of a conventional operating cable mounting structure. That is, as shown in the same figure, there is a working cable connecting fitting 3 which removably fixes the ends ₁₁ of the two working cables 1 with a shear pin 2, and a tension wire 4 whose other end is wound up by a winding mechanism. The pendant 5 provided at one end ₄₁ was fixedly connected with a bolt or the like.

In other words, the operating cable 1 and the tensioning wire 5 for tensioning the operating cable 1 are fixedly connected to each other in such a manner that untwisting, torsion, and the like are transmitted.

``Problem to be solved by the invention'' By the way, the following problem has been pointed out with regard to the attachment structure of the operating rope in such a conventional barrier.

First, when such two working ropes 1 are stretched and stretched at the end of the runway by winding the tension wires 4 on both sides, the tension wires 4 are untwisted and the two There was a case where the operating rope 1 of the book got twisted.

That is, the wire is generally unavoidable to be twisted, and the tension will be restored when the tension wire 4 is wound up.
Then, the pendant 5 at one end ₄₁ rotates, and the operating cable connecting fitting 3 fixedly connected thereto is rotated.
Since the operating cable 1 also rotates, the operating cable 1 may become twisted.

Now, when the operating rope 1 is twisted in this way, the distance between it and the above-mentioned capture cable is not maintained constant, and the distance between them becomes narrower. Then, the operating rope 1 and the capture cable no longer catch on to the predetermined height positions of the nose and main landing gears of the aircraft, and the barrier does not function properly due to, for example, being caught in a lower position.
Aircraft were often not stopped reliably.
An accident occurred that caused damage to the aircraft's fuselage, and it was pointed out that the lives and bodies of the crew members were at risk.

Second, once the barrier is used, the operating cable 1
Restoration work such as tensioning and unrolling of the rope was carried out, and operating cable 1
etc., it is necessary to replace them at regular intervals, and maintenance work is performed for this purpose.

Now, during such return work, maintenance work, etc., in order to avoid the above-mentioned twisting of the operating cable 1,
The twist of the tensioning wire 4 has also been considered. That is, a measure has been taken to avoid twisting of the tensioned and stretched operating cable 1 by pre-twisting the tension wire 4 extra.

However, such consideration and countermeasures are extremely difficult, difficult to implement accurately, and troublesome, resulting in many problems.

This point was pointed out in the conventional example.

The present invention has been developed in view of the above-mentioned circumstances to solve the problems of the conventional method. Even if the twist returns, it is absorbed by the rotating metal fitting and the rotating receiving metal fitting, and the twisting is easily and reliably prevented without being transmitted to the working rope. The purpose is to make suggestions.

"Means for solving the problem" The technical means of the present invention to achieve this purpose are as follows.

This operating cable attachment structure hooks the nose landing gear of the aircraft to the operating cable, thereby flipping up the capture cable connected to the operating cable to hook the main landing gear of the aircraft, and then hooking the capture cable to the operating cable. This is a barrier installed at the end of the runway to brake the aircraft.

The cable has the following operating cable connecting fittings, rotating receiving fittings, rotating fittings, and tension wires.

The operating cable connection fitting removably fixes the end of the operating cable using a pin.

The rotating metal fitting has a proximal end connected to the operating rope connecting metal fitting.

The rotating metal fitting is rotatably held at the tip of the rotating receiving metal fitting.

One end of the tension wire is fixed to the rotating metal fitting,
The other end is adapted to be wound up by a winding mechanism.

Two operating cables are always arranged in parallel at a predetermined height position on the nose gear of the aircraft, and the capture cable is connected between the two operating cables via each jump cable, and is fixed at a fixed height. They are placed along the ground directly below, keeping intervals. The winding mechanism is arranged on both sides of the runway, and tensions and unrolls the working rope through the tension wire, rotating metal fitting, rotating receiving metal fitting, working rope connecting fitting, etc., respectively.

Also, the pin of the operating cable coupling is configured to break and release when the nose gear of the aircraft pulls on the operating cable, allowing the operating cable to hang down.

A fitting hole with an inner flange is formed in the rotary receiving fitting, and a large-diameter end portion of the rotating fitting is fitted and held to form a rotatable but non-removable coupling ring. The rotating metal fitting and the rotating receiving metal fitting can be connected to the above-mentioned tension frame by such a coupling.
It is possible to absorb the unavoidable untwisting of the tensioning wire during tensioning, and to prevent transmission of the tension to the working rope and its twisting.

"Function" Since the attachment structure of the operating rope in the barrier according to the present invention is comprised of such means, it functions as follows.

The working rope tensioning wire is connected to the rotary receiving fitting via the rotating fitting. Therefore, when the tension wires on both sides are wound up by the winding mechanism and the working cable is stretched and stretched at the end of the runway, the result will be as follows.

That is, even if the tensioning wire is untwisted and the rotating metal fitting rotates, the rotating receiving metal fitting simply holds it without rotating. This rotation is therefore not transmitted to the operating cable coupling and to the operating cable.

In this way, even if the tension wire is untwisted, this is absorbed by the rotating metal fitting and the rotating receiving metal fitting, and twisting of the operating rope is reliably prevented. Two working ropes are installed side by side, and they are prone to twisting due to distortion or bending between each other, but this working rope reliably prevents such twisting, so it can be secured at all times. This means that the cables are stretched and stretched at a certain distance from each other.

Therefore, aircraft that do not stop at the scheduled point on the runway are braked to a stop by a normally functioning barrier installed at the end of the runway.

That is, first, the operating cable is caught at a predetermined height position on the nose landing gear of the incoming aircraft, and then the capture cable is sprung up and caught on the main landing gear of the aircraft at a predetermined height position. At the same time, the operating cable is detached from the operating cable by releasing the pin of the operating cable connecting fitting and hangs down.

In this way, the aircraft is gradually braked by the capture cable, etc., and eventually comes to a secure stop.

As mentioned above, since the twisting of the working rope is reliably prevented, there is no need to take into account the twisting of the tensioned wires when performing maintenance work such as restoring or replacing the barrier once it has been used. .

Moreover, these are realized only by adding a rotating metal fitting and a rotating receiving metal fitting to form a rotatable but non-extractable coupling ring, which also has a predetermined inner flange, insertion hole, large diameter end, etc. It is simple, and it is small and lightweight, and easy to assemble.

"Embodiments" The present invention will be described in detail below based on embodiments shown in the drawings.

First, the structure etc. will be explained in order of the outline of the barrier and the mounting structure of the operating rope.

The outline of the barrier is as follows.

FIG. 4 is an overall perspective view of the barrier B. FIG. 5 is a perspective view of the main parts of the barrier B, showing the operating cable 1, the capture cable, the jump cable, etc. FIG. 6 shows an aircraft, a runway, etc., FIG. 1 is a side view thereof, and FIG. 2 is a plan view thereof.

Barriers B are provided at the front and rear ends of the runway R to block them.

First, two working ropes 1 are installed in parallel, and aircraft A
For example, it hooks or hooks the nose gear _F1 hanging from the nose of a military aircraft. Both ends 1 ₁ of this operating cable 1 are attached to one end 4 1 of the tension wire 4, respectively, as will be described later, and the other end 4 ₂ of the tension wire 4 is attached to one end 4 ₁ of the tension wire 4.
is adapted to be wound up by a winding mechanism (not shown) built into, for example, stanchions 6 erected on both sides of the runway R.

Therefore, the two working ropes 1 are strung and stretched between the stanchions 6 via the tension wire 4 wound up by the winding mechanism, thereby blocking the end of the runway R.

One capture cable 7 is placed along the ground of the runway R directly below the operating rope 1, thereby blocking the end of the runway R. Capture cable 7
is the main landing gear hanging from the main wing of aircraft A, such as a military aircraft.
It hooks F ₂ and brakes aircraft A. Therefore, a heavy large chain 8 for braking is connected to both ends of the capture cable 7, and this large chain 8 is placed on the ground along the edge of the runway R.

Reference numeral 9 denotes a jump cable, and a large number of jump cables 9 are arranged between the above-mentioned working cable 1 and the capture cable 7.
In other words, the jumping rope 9 has one end 9 ₁ connected to one operating rope 1 .
After the bottom part ₉₂ is interposed between the ground and the capture cable 7, the other end ₉₃ is fixed to the other operating cable 1.

An attachment piece 10 extends from near the bottom ₉₂ of the jumping cable 9, and the attachment piece 10 is normally removably fixed to each anchor 11 fixed on the ground by a pin. Therefore, when the nose landing gear F ₁ of the aircraft A catches the operating rope 1 and moves forward slightly, the jump rope 9 is pulled in that direction. Then, the pin is cut and released, and the attachment piece 10 is detached from the anchor 11, and the hoisting cable 9 is released from the capture cable 7.
It is designed so that it can jump up while holding it.

Note that the above-mentioned Fig. 3 and the later-described Fig. 2 are
This corresponds to an enlarged view of the circled portion in the figure.

Barrier B is roughly shaped like this.

Next, the mounting structure of the operating rope 1 will be described.

FIG. 1 is a sectional view of essential parts showing an embodiment of the present invention. FIG. 2 is a perspective view of the same.

The ends 11 of the two operating cables ₁ are removably fixed to the operating cable connecting fitting 3 by shear pins 2. That is, a locking piece 12 is disposed at one end 3 ₁ of the operating cable connecting fitting 3 , and one end of the locking piece 12 is pivotally connected to _the one end 3 1 by a shaft 13 . The other end is attached by a shear pin 2. The end 11 of the operating cable ₁ is wrapped around the center of the locking piece 12.

When the nose landing gear _F1 of the aircraft A is pulled or pulled on the operating cable 1, the shear pin 2 is broken and released due to the impact load, and the locking piece 12
rotates around the shaft 13, and the end ₁₁ of the operating cable 1 is detached from the operating cable coupling fitting 3.

The other flat end portion 3 ₂ of this operating rope connection fitting 3 is as follows:
It is sandwiched between the bifurcated base end portions ₁₄₁ of the rotary receiving fitting 14, and is connected and fixed with bolts 15 or the like.
A fitting hole 14 4 having an inner flange 14 ₃ is formed at the tip 14 ₂ of the rotary receiving fitting ₁₄ . One large-diameter end 16 ₁ of the rotary fitting 16 is fitted into the fitting hole 14 ₄ to form a coupling that is rotatable and held by the inner flange 14 ₃ so that it cannot be pulled out.

The other flat end 16 ₂ of the rotary fitting 16 is sandwiched between the bifurcated portion 5 ₁ of the pendant 5, and the bolt 17
It is connected and fixed by etc. One end 4 ₁ of the tension wire 4 is fixed to this pendant 5, and the other end 4 ₂ of the tension wire 4 is wound up by the winding mechanism built into the stanchion 6 as described above. There is.

Note that the tip end portion 14 ₂ of the rotary receiver 14 may not be integrally formed as shown in the figure, but may be formed separately in advance and then fixed to the main body of the rotary receiver 14 with a set screw or the like.

In addition, 18 in FIG.
This is a grease reservoir connected to the insertion hole ₁₄₄ of ₄₂ . The grease reservoir 18 is then filled with grease, whereby the tip 14 ₂ of the rotary receiving fitting 14, the one end 16 ₁ of the rotating fitting 16, etc. are constantly lubricated, ensuring smooth rotation of the rotating fitting 16. has been done. It is also possible to replenish the grease reservoir 18 with grease as appropriate.

The attachment structure of the operating cable 1 is as described above.

The above is the explanation of the configuration, etc.

The operation etc. will be explained below.

As shown in FIGS. 1 and 2, in this mounting structure, the operating cable 1 and the tension wire 4 are connected via a rotary receiving fitting 14 and a rotating fitting 16. As shown in FIGS. And the insertion hole 14 ₄ of the tip part 14 ₂ of the rotation receiving bracket 14
One end portion 16 ₁ of the rotary fitting 16 is fitted into the inside,
A coupling ring is formed which is rotatably and non-removably held.

With such a mounting structure, when the tension wires 4 on both sides are wound up by the winding mechanism and the operating rope 1 is stretched and stretched at the end of the runway R,
It becomes as follows.

That is, even if the tension wire 4 is untwisted and the rotating metal fitting 16 rotates via the pendant 5, the rotating receiving metal fitting 14 simply holds it without rotating. Therefore, this rotation is not transmitted to the operating cable coupling 3 and to the operating cable 1. Even if the tension wire 4 is untwisted in this way, this is absorbed by the rotating metal fitting 16 and the rotating receiving metal fitting 14, and twisting of the operating cable 1 is reliably prevented. As a result, the operating cable 1 is always stretched and stretched while maintaining a constant distance from the capture cable 7.

The operating cable 1 is maintained in this state by its mounting structure. Therefore, aircraft A, such as a military aircraft, is stopped as follows.

Aircraft A, which fails to stop at the scheduled point on runway R after landing, is braked and stopped as follows by barrier B, which is installed at the end of runway R and functions normally.

That is, as shown in FIGS. 4, 5, 6, etc., first, the nose landing gear F ₁ of aircraft A into which the operating cable 1 has entered
It is caught at a predetermined height position. When the aircraft A moves further forward, the jump rope 9 is pulled in that direction, the pin is cut and released, and the attachment piece 10 is detached from the anchor 11. The jumping cable 9 then jumps up while holding the catching cable 7.

In this way, the catching cable 7 is raised and caught on the main landing gear _F2 of the aircraft A at a predetermined height. At the same time, the shear pin 2 of the operating cable connection fitting 3 is cut and released, so that the operating cable 1 separates from the operating cable and hangs down.

In this way, the aircraft A tries to move further forward with the capture cable 7 hooked to its main landing gear _F2 , but the capture cable 7 and the capture cable 7
It is gradually braked by the weight of the large chain 8 connected to both ends of the motor, and finally comes to a reliable stop.

As mentioned above, since twisting of the operating cable 1 is reliably prevented, when returning the operating cable 1 of the barrier B that has been used once, such as tensioning and unstretching, the operating cable 1
When maintenance work is carried out at regular intervals to replace the jumping cables 9, etc., it is not necessary to take into account the twisting of the tensioning wire 4 and take measures against twisting, such as twisting the tensioning wire 4 extra. be.

Moreover, these are the rotating metal fitting 16 and the rotating receiving metal fitting 1.
4 to form a rotatable and non-extractable coupling, and its configuration also includes a predetermined inner flange 14 ₃ , insertion hole 14 ₄ ,
It is simple and only requires forming the large-diameter end portion (one large-diameter end portion 16 ₁ ), etc., and it is also small and lightweight, making it easy to assemble.

The above is the explanation of the operation, etc.

"Effects of the invention" As explained above, the working rope attachment structure for the barrier according to the present invention connects the working rope and the tension wire through the rotating metal fitting and the rotating receiving metal fitting, so that the tension wire can be untwisted. Even if this occurs, it is absorbed by the rotating metal fitting and the rotating receiving metal fitting, so that it is not transmitted to the operating rope, and its twisting can be easily and reliably prevented.

First, the distance between the operating cable and the capture cable is always kept constant, so the operating cable and capture cable are caught at a predetermined height position on the nose and main landing gear of the aircraft entering the aircraft. . Therefore, the barrier functions normally, accidents that damage the aircraft body are eliminated, and the crew members are safe without any danger to their lives or bodies.

Second, when performing maintenance work such as restoring or replacing a barrier that has been used once, there is no need to take measures against twisting, such as taking extra twists in the tensioned wires in advance, making the work extremely simple. be converted into

Thirdly, these can be realized only by adding a rotating metal fitting and a rotating receiving metal fitting, so the structure is simple, and it is small, lightweight, and easy to assemble.

In this way, the problems that existed in this type of conventional example are completely eliminated, and the effects of the present invention are remarkable and significant.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of essential parts showing an embodiment of the operating rope attachment structure for a barrier according to the present invention. FIG. 2 is a perspective view of the same. FIG. 3 is a perspective view of a conventional operating cable mounting structure. FIG. 4 is an overall perspective view of the barrier. FIG. 5 is a perspective view of the main parts showing the operating cable, capture cable, jump cable, etc. of the barrier. 6 shows an aircraft, a runway, etc., FIG. 1 is a side view thereof, and FIG. 2 is a plan view thereof. DESCRIPTION OF SYMBOLS 1... Operating cable, 1 ₁ ... End, 2... Shear pin (pin), 3... Operating cable connection fitting, 4... Tension wire, 4 ₁ ... One end, 4 ₂ ... Other end, 7... ...Capturing cable, 9...Jumping cable, 14...Rotating bracket, 14
₁ ... Base end, 14 ₂ ... Tip, 14 ₃ ... Inner flange, 14 ₄ ... Fitting hole, 16... Rotating metal fitting,
A... Aircraft, B... Barrier, F ₁ ... Nose gear, F ₂
...Main landing gear, R...Runway.

Claims (1)

[Claims for Utility Model Registration] The nose landing gear of the aircraft is hooked to the working rope, and the catching cable connected to the working rope is thereby flipped up, and the main landing gear of the aircraft is hooked to the catching cable. an attachment structure for the operating rope on a barrier provided at the end of the runway in order to brake the aircraft, the operating rope connecting fitting removably fixing the end of the operating rope with a pin; A rotary bracket whose base end is connected to the operating rope connecting bracket; a rotary bracket rotatably held at the distal end of the rotary bracket; one end fixed to the rotary bracket and the other end wound. a tension wire wound around a take-up mechanism; two of the operating cables are always arranged in parallel at a predetermined height position on the nose gear of the aircraft; The ropes are connected to each other via jump ropes, and are placed along the ground directly below at a constant interval. The working rope is strung and strung via tensioning wires, rotating metal fittings, rotating receiving metal fittings, working rope connecting fittings, etc.
When the operating cable is extended, the pin of the operating rope connection fitting is such that when the operating cable is pulled or once pulled by the nose landing gear of the aircraft, the pin of the operating cable is broken and released, allowing the operating cable to hang down; A fitting hole is formed with an inner flange, and a large-diameter end of the rotating metal fitting is fitted and held to form a rotatable but non-removable coupling ring, and the rotating metal fitting and the rotating receiving metal fitting are connected to each other. Such a coupling is capable of absorbing the unavoidable untwisting of the tensioning wire during the tensioning and stretching, and is capable of preventing transmission of the tension to the working rope and its twisting. Attachment structure for operating cables in a barrier.