Simple light aircraft rudder angle measuring tool

Abstract

The utility model relates to a simple light aircraft rudder angle measuring tool comprising a measuring plate shaped like a Chinese character'ji ', the measuring plate comprises a scale plate with an arc-shaped head and a hook-shaped clamping plate at the tail end, an angle scale groove is formed in the inner side edge of the scale plate, an inclined transition plate is formed at one end of the scale plate, and the other end of the scale plate is provided with a hook-shaped clamping plate. A transverse connecting plate is formed at the tail end of the transition plate, a clamping plate is formed at the tail end of the connecting plate, an arc-shaped rubber buckle is fixedly connected to the inner side wall of the clamping plate, and the rubber buckle is clamped on a vertical tail wing of an airplane; a plurality of longitudinal adsorption connecting pieces are respectively fixed at the upper end and the lower end of the connecting plate; the measuring plate is adsorbed and fixed on the side wall of the vertical tail through the adsorption connecting pieces; and the scale plate is arranged behind the aircraft body and is opposite to a rudder of the aircraft. The measuring tool is simple in structure, convenient to operate and capable of accurately measuring the installation angle and the maximum transposition angle of the rudder.

Description

Technical Field:

[0001] The utility model relates to the technical field of rudder measurement work, and more specifically, to a simple angle measurement tool for the rudder of a light aircraft. Background Art:

[0002] The rudder, as a key component on the vertical tail of an aircraft, undertakes the important task of heading control. Through the pilot's foot pedal operation, the rudder can deflect left and right, thereby controlling the heading of the aircraft. When the rudder turns left, the airflow acting on it generates a moment that makes the tail move to the right, causing the nose to turn left and changing the heading of the aircraft. Similarly, when the rudder turns right, the nose will turn right. Moreover, the pilot can also skillfully use the cooperation between the rudder and the movement state of the wing to perform roll control, thus substituting the function of the aileron to a certain extent. In a light aircraft, the installation angle of the rudder is crucial. Whether it is the angle at rest or the maximum angles when turning left and right, it must be strictly measured to ensure compliance with technical requirements. In order to ensure that this measurement process is more accurate and simple, it is necessary to design a convenient measurement tooling fixture. Summary of the Utility Model:

[0003] The purpose of the utility model is to provide a simple angle measurement tool for the rudder of a light aircraft in view of the deficiencies of the prior art. The measurement tool has a simple structure and is easy to operate, and can accurately measure the installation angle and the maximum turning angle of the rudder.

[0004] A simple angle measurement tool for the rudder of a light aircraft includes a "7"-shaped measurement plate. The measurement plate includes a scale plate with an arc-shaped head and a hook-shaped clamping plate at the tail end. An angle scale groove is formed on the inner side edge of the scale plate. One end of the scale plate is formed with an inclined transition plate, and a transverse connecting plate is formed at the end of the transition plate. The clamping plate is formed at the end of the connecting plate, and an arc-shaped rubber buckle is fixedly connected to the inner side wall of the clamping plate. The rubber buckle is clamped on the vertical tail of the aircraft; a number of longitudinal adsorption connectors are respectively fixed to the upper and lower ends of the connecting plate, and the measurement plate is adsorbed and fixed to the side wall of the vertical tail through the adsorption connectors; the scale plate is arranged behind the aircraft fuselage and is opposite to the rudder of the aircraft.

[0005] A first positioning convex plate is formed on the inner side edge at the connection between the connecting plate and the transition plate, and an inclined second positioning convex plate is formed on the inner side edge at the connection between the connecting plate and the clamping plate. The first positioning convex plate and the second positioning convex plate respectively abut against the side wall of the vertical tail; a leveling support plate is formed in the middle of the outer side edge of the scale plate, and a longitudinal bubble level is fixedly connected to the leveling support plate.

[0006] Preferably, the angle scale groove on the scale plate includes a zero scale in the middle and gradually increasing angle scales on both sides. The rear side edge of the rudder is aligned with the zero scale on the scale plate.

[0007] Preferably, a card slot is formed in the middle of the rubber buckle. The card slot is located on the front side of the vertical tail of the aircraft. The inner side walls of the rubber buckle on both sides of the card slot are respectively pressed against the outer side walls on both sides of the vertical tail.

[0008] Preferably, the upper end surfaces of the leveling support plate, the scale plate, the transition plate, the connecting plate and the clamping plate are all in the same plane. Flanging is respectively formed on the outer side edges of the scale plate, the transition plate, the connecting plate and the clamping plate between the leveling support plate and the transition plate.

[0009] Preferably, a positioning hole is formed in the leveling support plate. A positioning pin is inserted into the positioning hole. The lower end of the positioning pin is inserted and abutted against a triangular support, and the triangular support is placed on the ground.

[0010] Preferably, the triangular support includes an upper support rod and a lower support rod of a vertical pipe. The positioning pin is inserted into the inner hole of the upper support rod and abuts against the top of the upper support rod. A stud is inserted and fixed at the lower part of the upper support rod. The stud is screwed into the lower support rod, and a triangular leg is fixedly connected to the lower part of the lower support rod.

[0011] Preferably, there are three groups of the adsorption connectors. One group of adsorption connectors is fixedly connected to the upper end surface of the connecting plate of the second positioning convex plate and is inclined; the remaining two groups of adsorption connectors are respectively fixedly connected to the upper and lower end surfaces of the connecting plate close to the first positioning convex plate.

[0012] Preferably, the adsorption connector includes a mounting plate fixedly connected to the measuring plate. A "C"-shaped positioning bracket is fixedly connected to the mounting plate. A longitudinal screw rod is inserted into the positioning bracket. One end of the screw rod is fixedly connected with a suction cup, and the other end passes through the positioning bracket and is fixedly connected with a mushroom-shaped button. A compression spring is inserted on the screw rod between the button and the positioning bracket, and both ends of the compression spring are respectively pressed against the positioning bracket and the button.

[0013] Preferably, a longitudinal limiting ejector rod is formed on the positioning bracket, and a U-shaped rubber protective sleeve is inserted and fixed at the end of the limiting ejector rod;

[0014] A washer is inserted on the screw rod, and the washer is clamped between the button and the compression spring.

[0015] The beneficial effects of the utility model are as follows:

[0016] The measuring tooling has a simple structure and is convenient to operate, and can accurately measure the installation angle and the maximum rotation angle of the rudder. Description of the drawings:

[0017] Figure 1 It is a schematic structural diagram of the utility model in a top view;

[0018] Figure 2 This is a front view structural schematic diagram of the present utility model;

[0019] Figure 3 This is a top view schematic diagram of the internal adsorption connecting piece of the present utility model;

[0020] Figure 4 This is a structural schematic diagram for measuring the rudder angle of an aircraft according to the present utility model.

[0021] In the figure: 1. Bed body; 2. Transverse feed mechanism; 3. Longitudinal feed mechanism; 4. Lathe tool holder; 5. Chip baffle; 51. Arc-shaped support plate; 52. Hem; 53. Upper baffle; 54. Support ear; 6. Connecting seat; 7. Hinge bolt; 8. Locking piece; 81. Bolt shaft; 82. Connecting rod; 83. Positioning rod; 84. Positioning plate; 85. Compression spring; 9. Side support; 91. Positioning jack; 92. Notch. Specific implementation manner:

[0022] Embodiment: As shown in Figures 1 to 3 shown, a simple and lightweight aircraft rudder angle measuring tooling includes a "L"-shaped measuring plate 1. The measuring plate 1 includes a scale plate 11 with an arc-shaped head and a hook-shaped clamping plate 14 at the tail end. An angle scale groove 19 is formed on the inner side edge of the scale plate 11. One end of the scale plate 11 is formed with an inclined transition plate 12, and a transverse connecting plate 13 is formed at the end of the transition plate 12. The clamping plate 14 is formed at the end of the connecting plate 13. A circular arc-shaped rubber buckle 2 is fixedly connected to the inner side wall of the clamping plate 14, and the rubber buckle 2 is clamped on the vertical tail of the aircraft; a plurality of longitudinal adsorption connecting pieces 3 are respectively fixed to the upper and lower ends of the connecting plate 13, and the measuring plate 1 is adsorbed and fixed on the side wall of the vertical tail through the adsorption connecting pieces 3; the scale plate 11 is arranged behind the aircraft fuselage and faces the rudder of the aircraft;

[0023] A first positioning convex plate 15 is formed on the inner side edge at the connection between the connecting plate 13 and the transition plate 12, and an inclined second positioning convex plate 16 is formed on the inner side edge at the connection between the connecting plate 13 and the clamping plate 14. The first positioning convex plate 15 and the second positioning convex plate 16 respectively abut against the side wall of the vertical tail; a leveling support plate 17 is formed in the middle of the outer side edge of the scale plate 11, and a longitudinal bubble level 4 is fixedly connected to the leveling support plate 17.

[0024] The angle scale groove 19 on the scale plate 11 includes a zero scale in the middle and gradually increasing angle scales on both sides, and the rear side edge of the rudder is aligned with the zero scale on the scale plate 11.

[0025] A card slot is formed in the middle of the rubber buckle 2, and the card slot is located on the front side of the aircraft vertical tail. The inner side walls of the rubber buckle 2 on both sides of the card slot are respectively pressed against the outer side walls on both sides of the vertical tail, as shown in Figure 1As shown, the middle part of the rubber buckle 2 and the middle part of the scale plate 11 at the zero scale are in the same horizontal line.

[0026] The upper end surfaces of the leveling support plate 17, the scale plate 11, the transition plate 12, the connecting plate 13, and the clamping plate 14 are all in the same plane. Flanging 110 is formed on the outer sides of the scale plate 11, the transition plate 12, the connecting plate 13, and the clamping plate 14 between the leveling support plate 17 and the transition plate 12. The flangings 110 can be fixedly connected together by connecting bars. The flangings 110 can strengthen the strength of the measuring plate 1 and reduce the probability of bending deformation of the measuring plate 1.

[0027] A positioning hole 18 is formed on the leveling support plate 17. A positioning pin 6 is inserted into the positioning hole 18. The lower end of the positioning pin 6 is inserted and abutted against a triangular support 5. The triangular support 5 is placed on the ground. During actual measurement, Figure 4 As described, the triangular support 5 is used to assist in supporting the scale plate 11 on the measuring plate 1 to prevent the scale plate 11 from moving downward due to gravity. At the same time, during actual measurement, because the front side edge of the vertical fin is inclined, the measuring plate 1 during measurement is not horizontally arranged but inclined, as Figure 2 shown. There is also a positioning pin 6 in the figure. The positioning pin 6 in the figure is inclined. When measuring, the positioning pin 6 becomes vertically arranged.

[0028] The triangular support 5 includes an upper support rod 51 and a lower support rod 52 of a vertical pipe. The positioning pin 6 is inserted into the inner hole of the upper support rod 51 and abuts against the top of the upper support rod 51. A stud is inserted and fixed at the lower part of the upper support rod 51. The stud is screwed into the lower support rod 52. A triangular leg 53 is fixedly connected to the lower part of the lower support rod 52. The height of the triangular support 5 can be adjusted.

[0029] There are three groups of adsorption connectors 3. One group of adsorption connectors 3 is fixedly connected to the upper end surface of the connecting plate 13 of the second positioning convex plate 16 and is inclined; the remaining two groups of adsorption connectors 3 are respectively fixedly connected to the upper and lower end surfaces of the connecting plate 13 close to the first positioning convex plate 15.

[0030] The adsorption connector 3 includes a mounting plate 31 fixedly connected to the measuring plate 1. A "C"-shaped positioning bracket 32 is fixedly connected to the mounting plate 31. A longitudinal screw 33 is inserted into the positioning bracket 32. One end of the screw 33 is fixedly connected with a suction cup 34, and the other end passes through the positioning bracket 32 and is fixedly connected with a mushroom-shaped button 35. A compression spring 36 is inserted on the screw 33 between the button 35 and the positioning bracket 32. The two ends of the compression spring 36 are respectively pressed against the positioning bracket 32 and the button 35.

[0031] It is fixed by sucking on the vertical tail fin through the suction cup 34. When the screw 33 is pulled, the suction cup 34 can be separated from the vertical tail fin. In the normal state, due to the presence of the compression spring 36, the suction cup 34 does not contact the vertical tail fin, which facilitates the position adjustment of the measuring plate 1. After the position of the measuring plate 1 is adjusted, pressing the button 35 can cause the suction cup 34 to adsorb on the vertical tail fin.

[0032] A longitudinal limit ejector rod 321 is formed on the positioning bracket 32. The end of the limit ejector rod 321 is inserted and fixed with a U-shaped rubber protective sleeve 38. The mounting plate 31 is provided with mounting holes, and the mounting plate 31 can be riveted and fixed on the measuring plate 1 through rivets; when driving the suction cup 34 to adsorb on the vertical tail fin, if the adsorption connecting piece 3 does not contact the vertical tail fin, the acting force driving the suction cup 34 will cause the measuring plate 1 to deform. Therefore, the limit ejector rod 321 is added. The limit ejector rod 321 abuts against the vertical tail fin, and the deformation of the measuring plate 1 can be avoided when the adsorption connecting piece 3 is connected. At the same time, in order to prevent the limit ejector rod 321 from scratching the outer surface of the vertical tail fin, the rubber protective sleeve 38 is added.

[0033] A washer 37 is inserted on the screw 33, and the washer 37 is clamped between the button 35 and the compression spring 36.

[0034] Working principle: The utility model is an angle measuring tool for the rudder of a light aircraft. Its main body is a measuring plate 1 in the shape of a "7". As Figure 4 shown, the measuring plate 1 is obliquely installed on the vertical tail fin of the aircraft, and a triangular bracket 5 is used for auxiliary support;

[0035] When the aircraft is stationary, observe whether the rear side of the rudder is directly opposite the zero scale of the scale plate 11 to judge whether the installation angle of the rudder is qualified;

[0036] After the installation angle is qualified, by driving the left or right turn of the rudder, based on the angle scales on both sides of the zero scale on the scale plate 11, the maximum left or right turn angle of the rudder can be measured.

[0037] The described embodiments are used to illustrate the utility model by way of example, rather than to limit the utility model. Any person skilled in the art can modify the described embodiments without departing from the spirit and scope of the utility model. Therefore, the scope of the rights protected by the utility model should be as listed in the claims of the utility model.

Claims

1. A simple rudder angle measuring tooling for light aircraft, which comprises a measuring plate (1) in a "7" shape. The measuring plate (1) includes a scale plate (11) with an arc-shaped head and a hook-shaped clamping plate (14) at the tail end. Angle scale grooves (19) are formed on the inner side edge of the scale plate (11), and it is characterized in that: An oblique transition plate (12) is formed at one end of the scale plate (11), a transverse connecting plate (13) is formed at the end of the transition plate (12), a clamping plate (14) is formed at the end of the connecting plate (13), an arc-shaped rubber buckle (2) is fixedly connected to the inner side wall of the clamping plate (14), and the rubber buckle (2) is clamped on the vertical tail of the aircraft; a plurality of longitudinal adsorption connectors (3) are respectively fixed at the upper and lower ends of the connecting plate (13), and the measuring plate (1) is adsorbed and fixed on the side wall of the vertical tail through the adsorption connectors (3); the scale plate (11) is arranged at the rear of the aircraft fuselage and opposite to the rudder of the aircraft; A first positioning convex plate (15) is formed on the inner side edge of the connection between the connecting plate (13) and the transition plate (12), and an inclined second positioning convex plate (16) is formed on the inner side edge of the connection between the connecting plate (13) and the clamping plate (14), and the first positioning convex plate (15) and the second positioning convex plate (16) are respectively against the side wall of the vertical tail; a leveling support plate (17) is formed in the middle of the outer side edge of the scale plate (11), and a longitudinal bubble level (4) is fixedly connected to the leveling support plate (17).

2. A simple light aircraft rudder angle measuring tool according to claim 1, characterized in that: The angle scale groove (19) on the scale plate (11) comprises a zero scale in the middle and gradually increasing angle scales on both sides, and the rear side of the rudder is directly opposite to the zero scale on the scale plate (11).

3. The simple light aircraft rudder angle measuring tool according to claim 1, characterized in that: A slot is formed in the middle of the rubber buckle (2), the slot is located at the front side of the vertical tail of the aircraft, and the inner side walls of the rubber buckle (2) on both sides of the slot are pressed against the outer side walls on both sides of the vertical tail respectively.

4. The simple light aircraft rudder angle measuring tool according to claim 1, characterized in that: The upper end surface of the leveling support plate (17), the upper end surface of the scale plate (11), the upper end surface of the transition plate (12), the upper end surface of the connecting plate (13) and the upper end surface of the card plate (14) are all in the same plane, and the outer edge of the scale plate (11) between the leveling support plate (17) and the transition plate (12), the outer edge of the transition plate (12), the outer edge of the connecting plate (13) and the outer edge of the card plate (14) are respectively formed with folded edges (110).

5. The simple light aircraft rudder angle measuring tool according to claim 1, characterized in that: A positioning hole (18) is formed on the leveling support plate (17), a positioning pin (6) is inserted into the positioning hole (18), a triangular bracket (5) is inserted at the lower end of the positioning pin (6) and abuts against the triangular bracket (5), and the triangular bracket (5) is placed on the ground.

6. A simple light aircraft rudder angle measuring tool according to claim 5, characterized in that: The triangular bracket (5) comprises an upper support rod (51) and a lower support rod (52) of a vertical tube, a positioning pin (6) is inserted into the inner hole of the upper support rod (51) and abuts against the top of the upper support rod (51), a stud is inserted and fixed at the lower part of the upper support rod (51), the stud is screwed into the lower support rod (52), and a triangular support leg (53) is fixed at the lower part of the lower support rod (52).

7. The simple light aircraft rudder angle measuring tool according to claim 1, characterized in that: The adsorption connectors (3) are provided in three groups, one group of adsorption connectors (3) is fixedly connected to the upper end surface of the connecting plate (13) of the second positioning protrusion (16) and is arranged at an angle; the remaining two groups of adsorption connectors (3) are respectively fixedly connected to the upper and lower end surfaces of the connecting plate (13) close to the first positioning protrusion (15).

8. A simple light aircraft rudder angle measuring tool according to claim 1 or 7, characterized in that: The adsorption connecting piece (3) described above includes a mounting plate (31) fixedly connected to the measuring plate (1). A "C"-shaped positioning bracket (32) is fixedly connected to the mounting plate (31). A longitudinal screw rod (33) is inserted into the positioning bracket (32). One end of the screw rod (33) is fixedly connected with a suction cup (34), and the other end passes through the positioning bracket (32) and is fixedly connected with a mushroom-shaped button (35). A compression spring (36) is inserted on the screw rod (33) between the button (35) and the positioning bracket (32), and both ends of the compression spring (36) are respectively pressed against the positioning bracket (32) and the button (35).

9. A simple light aircraft rudder angle measuring tool according to claim 8, characterized in that: A longitudinal limiting ejector rod (321) is formed on the positioning bracket (32), and a U-shaped rubber protective sleeve (38) is inserted and fixed at the end of the limiting ejector rod (321); A washer (37) is inserted on the screw rod (33), and the washer (37) is clamped between the button (35) and the compression spring (36).

Images