CN103723270A - Signal collection device of flap down final position of airplane - Google Patents

Abstract

The invention discloses an aircraft flap lowering terminal position signal acquisition device, which comprises a flap control cable, a U-shaped mounting bracket, a flap lowering terminal switch, a movable tongue, a limit pressing block, and a convex object. When the wing enters the final position of lowering, the protrusion will press the movable tongue to rotate clockwise under the comprehensive restriction of the U-shaped mounting bracket, the movable tongue and the limit pressure block, and the micro switch button will be retracted inward so that After the micro switch is turned on, a signal is issued to place the flaps at the end position; after the position of the flaps is lowered beyond the limit, the slope difference between the third lower part of the limit pressure block and the third lower part of the movable tongue becomes larger rapidly, and the convex The object is forcibly moved forward through the limitation of the limit pressing block and the movable tongue, and the micro switch button is released; Time-limited, device that ensures safe manipulation.

Description

A signal acquisition device for aircraft flaps down terminal position

technical field

The invention relates to a position signal acquisition device, in particular to an acquisition of an aircraft flap down terminal position signal.

Background technique

Flaps are an important part of the aircraft control system, and the retractable position of the flaps directly affects the control safety of the aircraft.

At present, some small fixed-wing aircraft, especially primary trainer aircraft, do not have hydraulic power assist. The retraction and release of the flaps is directly controlled by air pressure or steel cables. The position of the flaps is determined by mechanical indicators or visually by the pilot, which is affected by environmental factors such as visibility. It is impossible to accurately judge whether the flaps are in place, which directly affects the control of the aircraft. It is an important task to accurately collect the position of the flaps and convert the position signal into an electrical signal to facilitate the use of the acquisition system.

Contents of the invention

The technical problem to be solved by the present invention is to provide a device with a simple structure, which can realize the acquisition of the terminal position of the flaps lowered and ensure the safety of the operation when the flaps lowered position exceeds the limit.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

An aircraft flap down end position signal acquisition device, comprising a flap control cable, is characterized in that it also includes a U-shaped mounting bracket, a flap down end switch, a movable tongue, a limit pressure block, and a convex object, in,

A micro switch button is arranged on the end switch of flap lowering;

The U-shaped mounting bracket is fixedly installed on the aircraft body;

The limiting pressure block is fixedly installed on the U-shaped mounting bracket;

One end of the movable tongue is hinged on the U-shaped mounting bracket, the hinge point is arranged at the other end of the projection, and the movable tongue can rotate around the hinge point;

The protrusion is fixedly installed on the flap control cable, and the flap control cable passes through the middle of the limit pressing block and the movable tongue; when the flap control cable moves to the right, the flap is lowered; When the cable is operated to move to the left, the flaps are retracted;

The flap control cable moves to the right with the protruding object. When the flap enters the end position of lowering, the protruding object compresses the movement of The depressing tongue rotates clockwise and retracts the micro switch button inwards to complete the micro switch connection and send a signal that the flaps are placed at the end position;

After the flap enters the lower end position, the flap control cable continues to move to the right with the protrusion, and the slope difference between the second lower part of the limit pressure block and the second lower part of the movable tongue remains basically unchanged. The object continuously presses the micro switch button through the movable tongue to keep the micro switch on;

After the position of the flap lowered exceeds the limit, the difference between the slope of the third lower part of the limit pressure block and the slope of the third lower part of the movable tongue becomes larger rapidly, and the protrusion forcibly passes through the limit of the limit pressure block and the movable tongue and continues to move toward the Before the movement, the micro switch button is released, and the micro switch is disconnected.

As a further improvement of the present invention:

The sectional shape of the limiting pressure block is fan-shaped, the sectional shape of the movable tongue is tongue-shaped, and the shape of the protrusion is a hammer-like or elliptical-conical shape.

The protrusion is provided with a mounting groove, and the flap control steel cable is placed in the mounting groove, and the protrusion is welded and fixed according to the terminal position of the flap being lowered.

The U-shaped mounting bracket is fixedly installed on the fixed base plate of the mounting frame, the fixed base plate of the mounting frame is riveted together with the angle aluminum, and the angle aluminum is fixedly installed on the aircraft body.

The limiting pressing block is a wooden block.

The material of the protrusions is copper.

Compared with the prior art, the present invention has the advantage that it is especially suitable for the acquisition of the signal of the terminal position of the flaps of the small fixed-wing aircraft operated by cables, and is a simple structure, convenient installation, high reliability, and can realize flaps. It is a device that collects and converts the end position into an electrical signal, and can ensure the safety of maneuvering when the flap lowered position exceeds the limit.

Description of drawings

Fig. 1 is the schematic diagram before the protrusion passes through the device;

Fig. 2 is a schematic diagram when a convex object passes through the device;

Figure 3 is a schematic diagram of a convex object passing through the device forcibly;

Fig. 4 is a schematic diagram of a three-dimensional structure of the present invention;

1. Angle aluminum; 2. Mounting frame to fix the bottom plate; 3. U-shaped mounting bracket; 4. End switch for flaps down; 5. Movable tongue; 6. Limiting block; 7. Convex; Wing control cable; 41, micro switch button; 501, hinge point; 61, the first lower part of the limit pressing block; 62, the second lower part of the limit pressing block; 63, the third lower part of the limit pressing block; 51, The first lower part of the movable tongue; 52, the second lower part of the movable tongue; 53, the third lower part of the movable tongue; 71, the installation groove; 72, the direction of the protrusion; 9, the aircraft body;

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 3, the present invention adopts the following technical solutions:

An aircraft flap lowering terminal position signal acquisition device, comprising a flap control cable 8, characterized in that it also includes a U-shaped mounting bracket 3, a flap lowering terminal switch 4, a movable tongue 5, and a limit pressure block 6 , Protrusion 7, wherein, described flap is lowered terminal switch 4 and is provided with microswitch button 41; Described U-shaped mounting bracket 3 is fixedly installed on the aircraft body 9; Described limit pressure block 6 is fixedly installed On the U-shaped mounting bracket 3; one end of the movable tongue 5 is hinged on the U-shaped mounting bracket 3, and the hinge point 501 is arranged on the other end of the protrusion direction 72, and the movable tongue can be wound around the hinge point 501 Rotate; the protrusion 7 is fixedly installed on the flap control cable 8, and the flap control cable 8 passes through the middle of the limit pressing block 6 and the movable tongue 5; the flap control cable 8 moves to the right , the flaps are lowered; when the flap control cable 8 moves to the left, the flaps are retracted;

The flap control cable 8 moves to the right with the protrusion 7, as shown in Figure 1, the first lower part 61 of the limit pressure block (the part between a and b on the limit pressure block 6 in Figure 1) The difference between the slope and the slope of the first lower part 51 of the movable tongue is getting smaller and smaller (the part between d and e on the movable tongue 5 in Fig. 1), and the b and e places in Fig. 1 are protrusions 7 At first the position that is in contact with the movable tongue 5 and the limit briquetting block 6 at the same time, now the flap is about to enter the lower end position.

As shown in Figure 2, when the flaps enter the lower end position, the protrusion 7 presses the movable tongue 5 to rotate clockwise under the comprehensive restriction of the U-shaped mounting bracket 3, the movable tongue 5 and the limit pressure block 6 And the micro switch button 41 is retracted inwardly so as to complete the micro switch connection, and send the signal that the flap is put into the final position; Moving to the right, the slope of the second lower part 62 of the limit pressing block (the part between b and c on the limit pressing block 6 in Fig. 2 ) is the same as that of the second lower part 52 of the movable tongue (e on the movable tongue 5 in Fig. 2 ). The difference between the slope of the part between f and f) remains basically unchanged, and the protrusion 7 continues to press the micro switch button 41 through the movable tongue 5 to keep the micro switch on; c and h in Fig. 2 are convex The object 7 is about to break away from the contact of the limit pressing block 6 and the movable depressing tongue 5.

As shown in Figure 3, after the flap lowered position exceeds the limit, the slope of the third lower part 63 of the limit pressure block (the part between c and d on the limit pressure block 6 in Figure 3) is the same as the third lower part of the movable tongue. 53 (the part between f and h on the movable depressing tongue 5 in Fig. 3 ) the slope difference becomes larger rapidly, and the protrusion 7 forcibly passes through the limitation of the limit pressing block 6 and the movable depressing tongue 5 and continues to move forward slightly. The micro switch button 41 is released, and the micro switch is disconnected.

As a preferred embodiment of the present invention, the cross-sectional shape of the limiting pressure block 6 is fan-shaped, the cross-sectional shape of the movable tongue 5 is tongue-shaped, and the shape of the protrusion 7 is an elliptical cone (as shown in Figure 1 shown) or imitation hammer (as shown in Figure 4). In order to ensure a good contact between the three, the outer surfaces of the limiting pressure block 6, the movable tongue 5 and the protrusion 7 are preferably smooth. For the convenience and simplicity of implementation, it is preferable to provide a mounting groove 71 on the protrusion 7, the groove width is the same as the diameter of the protrusion 7, and the flap control cable 8 is placed in the mounting groove 71 and then welded according to the final position of the flap being lowered. Hold the protrusion 7 in place.

As shown in Figure 4, in order to further increase the bearing capacity of the device, the U-shaped mounting bracket 3 can preferably be fixedly installed on the fixed bottom plate 2 of the mounting frame, and the fixed bottom plate 2 of the mounting frame and the angle aluminum 1 are riveted together, and the angle aluminum 1 Fixedly installed on the aircraft body 9.

In order to further ensure safe operation and improve the wear resistance of the device, the limiting pressure block 6 may preferably be a wooden block, and the material of the protrusion 7 may preferably be copper.

As a preferred embodiment, the flap lowering terminal switch 4 is a light-touch micro switch with a pair of normally open contacts. When the contacts are connected, the pressing stroke of the button is 2-6 mm. Since the moving direction of the protrusion 7 is different from that of the microswitch contact, its stroke is not limited by the stroke of the microswitch contact, and the size of the protrusion 7 can be adjusted between the protrusion 7 and the movable tongue 5 to obtain The effective stroke is enough to keep the microswitch on, and at the same time, the problem that the convex object 7 directly wears the microswitch is solved. The protrusion can forcibly pass through the stop pressing block 6 and the movable tongue 5 and return to the left position when the flap is retracted, so that the device of the present invention will not be damaged when the flap lowered position exceeds the limit and ensure the safety of manipulation sex.

The above is only a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above-mentioned embodiments. All technical solutions belonging to the thinking of the present invention belong to the scope of protection of the present invention. It should be pointed out that for those in the technical field For those of ordinary skill, improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (6)

1. An aircraft flap puts down terminal position signal acquisition device, comprises flap control cable (8), is characterized in that: also comprises U-shaped mounting bracket (3), flap puts down terminal switch (4), movable pressure Tongue (5), limit pressure block (6), protrusion (7), wherein, A micro switch button (41) is provided on the flap down terminal switch (4); The U-shaped mounting bracket (3) is fixedly installed on the aircraft body (9); The position-limiting briquetting block (6) is fixedly installed on the U-shaped mounting bracket (3); One end of the movable tongue (5) is hinged on the U-shaped mounting bracket (3), and the hinge point (501) is arranged at the other end of the protrusion (72), and the movable tongue can be wound around the hinge point ( 501) rotate; The protrusion (7) is fixedly installed on the flap control cable (8), and the flap control cable (8) passes through the middle of the limit pressing block (6) and the movable tongue (5); When the wing control cables (8) move to the right, the flaps are lowered; when the flap control cables (8) move to the left, the flaps are retracted; The flap control cable (8) moves to the right with the protrusion (7). 5) and the limit pressure block (6) under the comprehensive limit, the pressing movable tongue (5) rotates clockwise and makes the micro switch button (41) retract inwards to complete the micro switch connection and send out the flap Put the end position signal; After the flaps enter the lower end position, the flap control cables (8) continue to move to the right with the protrusions (7), and the slope of the second lower part (62) of the limit pressing block is the same as the second lower part of the movable tongue ( The slope difference of 52) remains basically unchanged, and the convex object (7) continuously presses the microswitch button (41) through the movable tongue (5) to keep the microswitch on; After the flap lowered position exceeds the limit, the slope difference between the slope of the third lower part (63) of the limit pressure block and the slope of the third lower part (53) of the movable tongue becomes larger rapidly, and the protrusion (7) forcibly passes through the limit pressure block (6) and the limitation of movable tongue (5) continue to move forward, and the microswitch button (41) is released, and the microswitch is disconnected. 2. the aircraft flap according to claim 1 puts down terminal position signal acquisition device, wherein the cross-sectional shape of said limit pressing block (6) is fan-shaped, and the cross-sectional shape of said movable tongue (5) is tongue-shaped, The shape of the protrusion (7) is a pseudo-hammer or elliptical cone. 3. according to claim 1 or 2 described aircraft flaps put down terminal position signal acquisition device, wherein said protrusion (7) is provided with mounting groove (71), the flap control cable (8) is placed After installing the groove (71), according to the terminal position of the flaps, the protrusions (7) are welded and fixed. 4. according to claim 1 and 2 described aircraft flaps put down terminal position signal acquisition device, wherein said U-shaped mounting bracket (3) is fixedly installed on the mounting frame fixed base plate (2), mounting frame fixed base plate (2) It is riveted together with the angle aluminum (1), and the angle aluminum (1) is fixedly installed on the aircraft body (9). 5. The signal acquisition device for terminal position of aircraft flaps lowered according to claim 1 or 2, wherein the limit pressing block (6) is a wooden block. 6. The aircraft flaps down terminal position signal acquisition device according to claim 1 or 2, wherein the material of the protrusion (7) is copper.

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