Control force adjustable mechanical structure of speed brake handle

Abstract

The invention discloses a control force adjustable mechanical structure of a speed brake handle. A small base plate, a cushion block, a spring B and a lining B are placed in the middle of the handle rod, a rod sleeve is screwed into a screw C, and the right support and the left support are connected through a screw A. The RVDT is fixed to the left support through the pressing plate, the auxiliary gear A, the auxiliary gear B, the lining A, the flat gasket and the elastic gasket B are placed on the RVDT and screwed into the nut C, the bearing A and the main gear are placed on one side of the rod sleeve, the elastic gasket A is screwed into the screw B, the main gear is meshed with the auxiliary gear A and the auxiliary gear B, and the damping bearing C is placed on the other side of the rod sleeve. The device is small in installation space, few in parts, high in reliability index, capable of rapidly improving operation of a pilot on speed brake equipment, capable of adjusting the operation comfort and timeliness of the device according to the requirements of the pilot, adjustable and easy to maintain and disassemble.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft, and in particular relates to a mechanical structure of a speed brake handle with adjustable control force. Background Art

[0002] When the aircraft is taking off, cruising, and landing, the pilot has the need to operate the speed brake handle. The auxiliary control system provides increased aerodynamic resistance on the ground or in flight during takeoff, cruising, and landing to improve the aircraft's handling performance. However, when the pilot operates the speed brake handle, the control force and control method must meet ergonomics. The control feel must not only make the pilot comfortable, but also avoid the hidden danger of automatic displacement of the handle when it is initially in the 0 position due to the vibration of the aircraft body during flight. Therefore, the speed brake handle control force is designed as an adjustable mechanism that can be adjusted according to actual needs. In the traditional speed brake handle control force adjustable mechanism, the spring preload is calculated according to the specified operating force, and then the compression of the nut preload spring is adjusted to meet this requirement, and then the nut is fixed with a cotter pin to achieve the adjustment of the operating force. This structure requires a large internal installation space and many parts in the product, and has a large risk of failure, which greatly reduces the reliability of the structure. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a deceleration brake handle with an adjustable control force mechanical structure that has a small installation space, few parts, high reliability index, can quickly improve the pilot's control of the deceleration brake equipment, and can adjust its control comfort and timeliness according to the pilot's needs, and is adjustable, simple to maintain and disassemble.

[0004] The purpose of the present invention and the solution of its main technical problems are achieved by adopting the following technical solutions: The invention discloses a mechanical structure of adjustable control force of a speed brake handle, wherein: a small pad, a pad, a spring B, a bushing B, a rod sleeve screwed into a screw C are placed in the middle of the handle rod, and the right bracket and the left bracket are connected by a screw A. The RVDT is fixed to the left bracket through a pressure plate, and the auxiliary gear A, auxiliary gear B, bushing A, flat washer, and spring washer B are respectively placed on the RVDT and screwed into a nut C, a bearing A, a main gear, and a spring washer A are placed on one side of the rod sleeve and screwed into a screw B, the main gear is meshed with the auxiliary gear A and the auxiliary gear B, and a damping bearing C is placed on the other side of the rod sleeve.

[0005] The auxiliary gear A and the auxiliary gear B are sector-shaped.

[0006] A light guide plate is installed on the right bracket and the left bracket, three gear positions are arranged on the light guide plate, and three scale gear positions are arranged on the handle bar.

[0007] The auxiliary gear A is connected to one end of the spring A, and the other end of the spring A is connected to the auxiliary gear B.

[0008] A shift plate is installed at the lower end of the left bracket.

[0009] A positioning ring is placed on the lower end of the handle bar, a bearing B is inserted into the shift pin and screwed into the nut A, and the bearing B is inserted into the shift plate and contacts the shift plate.

[0010] Compared with the prior art, the present invention has obvious beneficial effects; it can be seen from the above technical scheme that the handle rod is installed in a rod sleeve part with a spring, a bushing, a pad, a small pad, and a screw to form a rod sleeve component. The pre-stress height of the spring can be adjusted by adjusting the height of the pad. The pre-stress height determines the reset force of the spring (which is also the lifting force of the handle). The right bracket and the left bracket are connected by screws. The RVDT is fixed to the left bracket through a pressure plate, and the sub-gear A and the sub-gear B are fixed to the RVDT through bushings, flat washers, spring washers, and nuts. The main gear is fixed to the rod sleeve by spring washers and screws to achieve meshing with the sub-gear. Bearings are installed on both sides of the rod sleeve, and a damping bearing C is installed at one end. The damping force of the damping bearing itself is used to provide the handle operating force. When holding the control handle, the handle drives the main gear to rotate; the sub-gear A and sub-gear B are in meshing state with the main gear, and the sub-gear A is fixedly connected to the RVDT, so when the main gear is rotated, the RVDT can be driven to rotate, and the control handle can drive the main gear to rotate, and the rotation of the main gear can drive the RVDT to rotate, so the control principle of the speed brake is to drive the RVDT to rotate through the mechanical movement of the control handle, and the rotation of the RVDT can realize the corresponding electrical information output to achieve the transmission of relevant functional instructions. The present invention allows the pilot to use simple mechanical control, drive the RVDT to rotate through the corresponding mechanical structure, and convert it into a device with corresponding electrical signal output. In short; the invention has a small installation space, few parts, and high reliability index, and can quickly improve the pilot's control of the speed brake equipment, and can adjust its control comfort and timeliness according to the needs of the pilot. It is adjustable and easy to maintain and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the present invention; Figure 2 for Figure 1 Sectional view of AA; Figure 3 for Figure 1 Cross-sectional view of BB; Figure 4 for Figure 2 Cross-sectional view of CC; Figure 5 It is a rear view of the present invention; Figure 6 Explosion diagram of the present invention Figure 7 This is a usage state diagram of the gear position 1 / 2 of the present invention; Figure 8This is a usage diagram of the gear position F of the present invention.

[0012] Reference numerals: 1. Handle bar, 2. Light guide plate, 3. Left bracket, 4. Screw A, 5. Spring A, 6. Main gear, 7. Right bracket, 8. Pressure plate, 9. RVDT, 10. Shift plate, 11. Bearing A, 12. Spring washer A, 13. Screw B, 14. Nut A, 15. Spring washer A, 16. Positioning ring, 17. Bearing B, 18. Shift pin, 19. Rod sleeve, 20. Sub gear A, 21. Sub gear B, 22. Bushing A, 23. Flat washer, 24. Spring washer B, 25. Nut C, 26. Bushing B, 27. Spring B, 28. Spacer, 29. Small pad, 30. Screw C, 31. Damping bearing C. DETAILED DESCRIPTION

[0013] The specific implementation methods, structures, features and functions of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0014] The invention discloses a mechanical structure of a speed brake handle with adjustable operating force, wherein a small pad 29, a pad 28, a spring B27, a bushing B26 are placed in the middle of the handle rod 1, a rod sleeve 19 is screwed with a screw C30, and a right bracket 7 and a left bracket 3 are connected by screws A4. RVDT9 is fixed on the left bracket 3 through the pressure plate 8. The sub-gear A(20, sub-gear B(21, bushing A22, flat washer 23, spring washer B24 are placed on the RVDT9 and screwed into the nut C25. The bearing A11, main gear 6, spring washer A12 are placed on one side of the rod sleeve 19 and screwed into the screw B13. The main gear 6 is meshed with the sub-gear A(20 and sub-gear B(21. The damping bearing C31 is placed on the other side of the rod sleeve 19. The sub-gear A(20 and sub-gear B(21 are fan-shaped. The right bracket 7 and the left bracket 3 are installed with a light guide plate 2. The light guide plate 2 is provided with 3 gears. The handle bar 1 is provided with 3 scale gears. The sub-gear A(20 is connected to one end of the spring A5, and the other end of the spring A5 is connected to the sub-gear B (21, the lower end of the left bracket 3 is installed with a shift plate 10, the lower end of the handle bar 1 is placed with a positioning ring 16, the bearing B17 is inserted into the shift pin 18 and screwed into the nut A14, and the bearing B17 is inserted into the shift plate 10 and contacts the shift plate 10.

[0015] When in use, the pilot holds and pulls the control handle rod 1. At this time, the handle rod 1, rod sleeve 19, bushing B26, spring B27, pad 28, small pad 29, and screw C30 form a rod sleeve assembly. The spring B27 is installed in the rod sleeve 19, and the bushing B26 is inserted into the rod sleeve 19 to fix the upper end of the spring. Then the pad 28 is fixed to the rod sleeve 19 with screw C30 to fix the lower end of the spring B27, and the pre-stress height of the spring B27 is obtained. Then, the pre-stress height of the spring is fine-tuned by adding a small pad 29 at the lower end of the pad 28 to adjust the reset force of the spring, so as to ensure that it meets the handle lifting force. The handle rod 1 is inserted into the rod sleeve 19, and the bearings 11 and damping bearings C31 are installed on both sides of the rod sleeve 19, and the damping bearing C31 is installed at one end. The damping force of the damping bearing itself is used to provide the handle operating force. The main gear 6 is fixed to the rod sleeve assembly through spring washer A12 and screw B13, and the auxiliary gear A(20) and auxiliary gear B(21) are fixed to the RVDT9 through bushing A22, flat washer 23, spring washer B24 and nut C25. At this time, the main gear 6, auxiliary gear A(20) and auxiliary gear B(21) are fixed to the RVDT9. (21) is in meshing state. When the pilot pushes and pulls the control handle rod 1, the handle drives the rod sleeve 19, the main gear 6, the sub-gear A20, and the sub-gear B(21) to rotate, and the rotation of the sub-gear A20 and the sub-gear B(21 drives the RVDT9 to rotate, and finally realizes the conversion of mechanical movement and electrical output. The present invention is based on the structural design of the product with limited installation space, adjustable control force and high product reliability. The invention simplifies the adjustment force mechanism and simplifies the combination of its internal parts. The adjustment of the handle pulling force is achieved by only increasing or decreasing the number of pads to adjust the spring preload height. The damping force of the damping bearing is obtained by calculation, and the control force of the adjustment handle is achieved by the damping force. The adjustment structure is simple, and the subsequent disassembly, maintenance and replacement are relatively simple. The light guide plate 2 is provided with three scale gears, namely 0, 1 / 2, and F. The initial 0 position requires the handle to be lifted and unlocked before the handle can be manipulated. Figure 4 , this structure plays a role in preventing misoperation.

[0016] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A mechanical structure for a speed brake handle with adjustable control force, characterized in that; A small pad (29), a pad (28), a spring B (27), a bushing B (26), and a rod sleeve (19) are placed in the middle of the handle bar (1) and screwed into the screw C (30). The right bracket (7) and the left bracket (3) are connected by the screw A (4). The RVDT (9) is fixed to the left bracket (3) by the pressure plate (8). The sub-gear A (20), sub-gear B (21), bushing A (22), flat washer (23), and spring washer B (24) are placed on the RVDT (9) and screwed into the nut C (25). The bearing A (11), the main gear (6), and the spring washer A (12) are placed on one side of the rod sleeve (19) and screwed into the screw B (13). The main gear (6) is meshed with the sub-gear A (20) and the sub-gear B (21). The damping bearing C (31) is placed on the other side of the rod sleeve (19).

2. A mechanical structure for adjusting the control force of a speed brake handle as claimed in claim 1, characterized in that: The auxiliary gear A (20) and the auxiliary gear B (21) are sector-shaped.

3. A mechanical structure for adjusting the control force of a speed brake handle as claimed in claim 1, characterized in that: A light guide plate (2) is mounted on the right bracket (7) and the left bracket (3), three gear positions are arranged on the light guide plate (2), and three scale gear positions are arranged on the handle bar (1).

4. A mechanical structure for adjusting the control force of a speed brake handle as claimed in claim 1, characterized in that: The pinion gear A (20) is connected to one end of the spring A (5), and the other end of the spring A (5) is connected to the pinion gear B (21).

5. A mechanical structure of a speed brake handle with adjustable control force as claimed in claim 1, characterized in that; A shift plate (10) is mounted on the lower end of the left bracket (3).

6. A mechanical structure of a speed brake handle with adjustable control force as claimed in claim 1, characterized in that; A positioning ring (16) is placed on the lower end of the handle bar (1), a bearing B (17) is inserted into the gear pin (18) and screwed into the nut A (14), and the bearing B (17) is inserted into the gear plate (10) and contacts the gear plate (10).

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