Front wheel turning hand wheel deflection angle measurer

Abstract

The invention discloses a front wheel turning hand wheel deflection angle measurer which comprises a dial, a front clamping plate, a rear clamping plate and a T-shaped connector, the dial is of a disc-shaped structure with a fan-shaped notch, a semicircular notch is reserved in the center of the dial, scales are arranged on the circumference of the dial, the front clamping plate and the rear clamping plate are of split structures, and the T-shaped connector is connected with the front clamping plate and the rear clamping plate. The middle parts of the two parts are arc-shaped structures, and the two parts are spliced to form a clamping hole for clamping a front wheel turning hand wheel transmission rod; one ends of the front clamping plate and the rear clamping plate are connected through a pin shaft, and the other ends of the front clamping plate and the rear clamping plate are openable or lockable structures; a T-shaped connector is fixed on the side surface of the front clamping plate, the T-shaped connector is provided with an upper pointer and a lower pointer, and the lower pointer is fixedly connected with the 0-degree position of the scale on the dial; the pointing directions of the upper pointer and the lower pointer are opposite, the upper pointer is used for being aligned with a triangular neutral mark on a front wheel turning hand wheel, and the lower pointer is used for being aligned with a neutral mark line on a light guide plate in a cockpit.

Description

Technical Field

[0001] The invention belongs to the field of aviation technology, and in particular relates to a front wheel turning hand wheel deflection angle measuring device. Background Art

[0002] When the aircraft takes off and lands, the front wheels are mainly controlled manually by the pilot, who uses the front wheel steering hand wheel in the cockpit to control the front wheels at the front of the fuselage to steer. When the aircraft is taxiing on the ground, the front wheels are generally controlled by an automatic control system to ensure vertical directional stability when the aircraft is running on the ground. However, when the aircraft is turning on the ground, the front wheels may sometimes deviate abnormally, making directional control more difficult.

[0003] After inspection and analysis, it was found that the triangular neutral mark on the front wheel steering hand wheel did not coincide with the neutral mark line on the light guide panel in the cockpit, causing the pilot to operate the front wheel to steer according to the instructions on the instrument panel, resulting in the aircraft deviating when the pilot manually controlled the front wheel to steer.

[0004] When installing the front wheel turning hand wheel, the operator relies on aligning the neutral mark on the aircraft light guide plate with the triangular neutral mark on the front wheel turning hand wheel for installation. However, there is a distance of about 60mm between the front wheel turning hand wheel and the light guide plate. Without auxiliary installation tooling, the accuracy of the installation position of the front wheel turning hand wheel cannot be guaranteed, which easily leads to misunderstandings in steering and direction correction. Too frequent steering will prolong the driver's fatigue driving time, accelerate the aging of the steering system, tires, etc., and bring great hidden dangers to driving safety. Summary of the invention

[0005] Aiming at the problem that the aircraft deviates during turning due to installation deviation of the front wheel turning hand wheel, the present invention provides a front wheel turning hand wheel deflection angle measuring device, which effectively improves the installation quality of the front wheel turning hand wheel, slows down the aging speed of the steering system, tires, etc., and increases the balance of the aircraft during turning.

[0006] In order to achieve the above tasks, the present invention adopts the following technical solutions:

[0007] A front wheel turning hand wheel deflection angle measuring device comprises a dial, a front clamping plate, a rear clamping plate and a T-shaped connector, wherein:

[0008] The dial is a disc-shaped structure with a fan-shaped notch, a semicircular notch is left at the center of the dial, and scales are set on the circumference of the dial;

[0009] The front and rear splints are of a detachable structure, and the middle parts of the two are arc-shaped structures, and after being detached, a clamping hole for clamping the front wheel turning hand wheel transmission rod is formed; one end of the front and rear splints is connected by a pin shaft, and the other end of the front and rear splints is an openable or locking structure;

[0010] A T-shaped connector is fixed on the side of the front splint. The T-shaped connector has an upper pointer and a lower pointer. The lower pointer is connected and fixed to the 0° position of the scale on the dial. The upper pointer and the lower pointer point in opposite directions but are on the same straight line. When in use, the upper pointer is used to align with the triangular neutral mark on the front wheel turning handwheel, and the lower pointer is used to align with the neutral mark line on the light guide plate in the cockpit.

[0011] Furthermore, the fan-shaped notch is used for the transmission rod of the front wheel turning hand wheel of the aircraft to pass through; and the semicircular notch is used to cooperate with the outer wall of the transmission rod of the front wheel turning hand wheel.

[0012] Furthermore, let the central angle corresponding to the outer circumference of the dial be N, then set N / 2 as 0°, and from 0° onwards the positive scale is clockwise, and the negative scale is counterclockwise.

[0013] Furthermore, a window is provided on the dial to facilitate the correspondence between the dial and the 0-position scale on the aircraft light guide plate; wherein the window is located on the side of 0°.

[0014] Furthermore, for the scale setting, each grid represents 1 degree, and each large grid represents 5 degrees.

[0015] Furthermore, a slot is provided at the end of the front splint, and a rotatable hitch bolt is installed at the end of the rear splint through a pin. After the hitch bolt is rotated until it is inserted into the slot, the front and rear splints are locked by tightening a nut on the hitch bolt.

[0016] Furthermore, the straight line passes through the center of a clamping hole formed by splicing the front clamping plate and the rear clamping plate.

[0017] Furthermore, the outer shape of the upper pointer is a triangle mark shape, and the outer shape of the lower pointer is a wedge shape.

[0018] Furthermore, the dial is installed on the side of the transmission rod of the front wheel steering hand wheel of the aircraft, so that the transmission rod cooperates with the semicircular notch of the dial, and at the same time, the scale line at the 0° position on the side of the window on the dial is aligned with the 0 position scale line on the light guide plate, and then the transmission rod is clamped between the front clamp plate and the rear clamp plate, and the dial is rotated to adjust the position of the dial so that the triangular mark on the front wheel steering hand wheel is aligned with the tip of the upper pointer, and then the front clamp plate and the rear clamp plate are locked to fix the dial relative to the front wheel steering hand wheel of the aircraft; then, the front wheel steering hand wheel is rotated to drive the dial to fine-tune the position, and the lower pointer is observed through the window to align with the neutral mark line on the light guide plate in the cockpit. At this time, the position of the front wheel steering hand wheel is the correct installation position.

[0019] Compared with the prior art, the present invention has the following technical features:

[0020] The present invention provides a front wheel turning hand wheel deflection angle measuring device, which is light in weight, simple in structure, and easy to use. It can be used regardless of whether the space is open or not. The front and rear plates can perfectly match the aircraft structural parts, and the upper and lower pointers are set to facilitate the installation and check of the installation quality of the front wheel turning hand wheel. It avoids misunderstandings in steering and direction correction, slows down the aging speed of the steering system, tires, etc., increases the balance of the aircraft when turning, and improves the safety of aircraft driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the three-view and isometric view of the front wheel turning hand wheel deflection angle measuring device;

[0022] Figure 2 Isometric view of the front wheel steering handwheel deflection angle measurer.

[0023] Among them: 1 dial, 2 front splint, 3 pin shaft, 4 rear splint, 5 movable bolt, 6 nut, 7 pin, 8 upper pointer, 9 lower pointer, 10 T-shaped connector. DETAILED DESCRIPTION

[0024] See attached Figure 1 and Figure 2 The present invention provides a front wheel turning hand wheel deflection angle measuring device, comprising a dial 1, a front clamping plate 2, a pin 3, a rear clamping plate 4, a live bolt 5, a nut 6, a pin 7, an upper pointer 8, a lower pointer 9, and a T-shaped connector 10, wherein:

[0025] The dial 1 is a disc-shaped structure with a fan-shaped notch, and the fan-shaped notch is used for the transmission rod of the front wheel steering hand wheel of the aircraft to pass through; a semicircular notch is left at the center of the dial 1, which cooperates with the outer wall of the transmission rod of the front wheel steering hand wheel; a scale is set on the circumference of the dial 1, and the central angle corresponding to the outer circumference of the dial 1 is N, then N / 2 is set as 0°, and the clockwise direction from 0° is the positive scale, and the counterclockwise direction is the negative scale; a window is opened on the dial 1 to facilitate the correspondence between the dial 1 and the 0-position scale on the aircraft light guide plate; wherein, the window is located on the side of 0°; for the setting of the scale, each grid represents 1 degree, and each large grid represents 5 degrees;

[0026] The front splint 2 and the rear splint 4 are of a splicable structure, and the middle parts of the two are arc-shaped structures, and after splicing, a clamping hole for clamping the front wheel turning hand wheel transmission rod is formed; one end of the front splint 2 and the rear splint 4 are connected by a pin shaft 3, and the other end of the front splint 2 and the rear splint 4 is an openable or locking structure; specifically, a slot is provided at the end of the front splint 2, and a rotatable live bolt 5 is installed at the end of the rear splint 4 through a pin 7. After the live bolt 5 is rotated to be inserted into the slot, the front splint 2 and the rear splint 4 are locked by tightening the nut 6 on the live bolt 5;

[0027] A T-shaped connector 10 is fixed on the side of the front clamping plate 2. The T-shaped connector 10 has an upper pointer 8 and a lower pointer 9. The lower pointer 9 is connected and fixed to the 0° position of the scale on the dial 1. The upper pointer 8 and the lower pointer 9 point in opposite directions but are on the same straight line, which passes through the center of the clamping hole formed by the front clamping plate 2 and the rear clamping plate 4. The upper pointer 8 has a triangular mark shape and the lower pointer 9 has a wedge shape. When the measuring device is in use, the upper pointer 8 is used to align with the triangular neutral mark on the front wheel turning hand wheel, and the lower pointer 9 is used to align with the neutral mark line on the light guide plate in the cockpit.

[0028] A front wheel turning hand wheel deflection angle measuring device of the present invention is described in detail with reference to the accompanying drawings:

[0029] When in use, first install the dial 1 to the side of the transmission rod of the front wheel steering hand wheel of the aircraft, so that the transmission rod cooperates with the semicircular notch of the dial 1, and at the same time, the scale line at the 0° position on the side of the window on the dial 1 is aligned with the 0-position scale line on the light guide plate, and then clamp the transmission rod between the front clamp plate 2 and the rear clamp plate 4, and slightly rotate the measuring device to adjust the position of the measuring device so that the triangular mark on the front wheel steering hand wheel is aligned with the tip of the upper pointer 8, and then lock the front clamp plate 2 and the rear clamp plate 4 to fix the measuring device relative to the front wheel steering hand wheel of the aircraft; then, by rotating the front wheel steering hand wheel, drive the measuring device to fine-tune the position, observe through the window, and align the lower pointer 9 with the neutral mark line on the light guide plate in the cockpit. At this time, the position of the front wheel steering hand wheel is the correct installation position.

[0030] The front wheel turning hand wheel deflection angle measuring device has a simple structure, is easy to operate, is light and flexible, and is suitable for the installation of turning hand wheels and steering wheels in various working conditions. By changing the front and rear splints with different shapes, it can adapt to the installation of shaft turning hand wheels and steering wheels with different shapes.

Claims

1. A front wheel turning hand wheel deflection angle measuring device, characterized in that: It comprises a dial (1), a front clamping plate (2), a rear clamping plate (4) and a T-shaped connector (10), wherein: The dial (1) is a disc-shaped structure with a fan-shaped notch, a semicircular notch is left at the center of the dial (1), and scales are arranged on the circumference of the dial (1); The front clamping plate (2) and the rear clamping plate (4) are of a detachable structure, and the middle parts of the two are arc-shaped structures. After being detached, a clamping hole for clamping the front wheel turning hand wheel transmission rod is formed; one end of the front clamping plate (2) and the rear clamping plate (4) are connected by a pin shaft (3), and the other end of the front clamping plate (2) and the rear clamping plate (4) are of an openable or locking structure; A T-shaped connector (10) is fixed on the side of the front clamping plate (2), and the T-shaped connector (10) has an upper pointer (8) and a lower pointer (9), and the lower pointer (9) is connected and fixed to the 0° position of the scale on the dial (1); the upper pointer (8) and the lower pointer (9) point in opposite directions but are located on the same straight line; when in use, the upper pointer (8) is used to align with the triangular neutral mark on the front wheel turning hand wheel, and the lower pointer (9) is used to align with the neutral mark line on the light guide plate in the cockpit.

2. The front wheel turning hand wheel deflection angle measuring device according to claim 1, characterized in that: The fan-shaped notch is used for the transmission rod of the front wheel turning hand wheel of the aircraft to pass through; the semicircular notch is used for matching with the outer wall of the transmission rod of the front wheel turning hand wheel.

3. The front wheel turning hand wheel deflection angle measuring device according to claim 1, characterized in that: The central angle corresponding to the outer circumference of the scale plate (1) is N, and the position N / 2 is set as 0°. Starting from 0°, the clockwise scale is the positive scale, and the counterclockwise scale is the negative scale.

4. The front wheel turning hand wheel deflection angle measuring device according to claim 1, characterized in that: A window is provided on the dial (1) to facilitate the dial (1) to correspond to the 0-position scale on the aircraft light guide plate; wherein the window is located on the side of 0°.

5. The front wheel turning hand wheel deflection angle measuring device according to claim 1, characterized in that: For the scale setting, each grid represents 1 degree, and each large grid represents 5 degrees.

6. The front wheel turning hand wheel deflection angle measuring device according to claim 1, characterized in that: A slot is provided at the end of the front clamping plate (2), and a rotatable live bolt (5) is installed at the end of the rear clamping plate (4) via a pin (7). After the live bolt (5) is rotated until it is inserted into the slot, the front clamping plate (2) and the rear clamping plate (4) are locked by tightening a nut (6) on the live bolt (5).

7. The front wheel turning hand wheel deflection angle measuring device according to claim 1, characterized in that: The straight line passes through the center of a clamping hole formed by splicing the front clamping plate (2) and the rear clamping plate (4).

8. The front wheel turning hand wheel deflection angle measuring device according to claim 1, characterized in that: The outer shape of the upper pointer (8) is a triangular mark shape, and the outer shape of the lower pointer (9) is a wedge shape.

9. The front wheel turning hand wheel deflection angle measuring device according to claim 1, characterized in that: The dial (1) is mounted on the side of the transmission rod of the front wheel steering hand wheel of the aircraft, so that the transmission rod is matched with the semicircular notch of the dial (1), and the scale line at the 0° position on the side of the window on the dial 1 is aligned with the 0 position scale line on the light guide plate, and then the transmission rod is clamped between the front clamping plate (2) and the rear clamping plate (4), and the dial (1) is rotated to adjust the position of the dial (1) so that the triangular mark on the front wheel steering hand wheel is aligned with the tip of the upper pointer (8), and then the front clamping plate (2) and the rear clamping plate (4) are locked so that the dial (1) is fixed relative to the front wheel steering hand wheel of the aircraft; then the front wheel steering hand wheel is rotated to drive the dial (1) to fine-tune the position, and the lower pointer (9) is aligned with the neutral mark line on the light guide plate in the cockpit by observing through the window. At this time, the position of the front wheel steering hand wheel is the correct installation position.

Images