Self-resetting type speed brake handle structure

Abstract

The invention discloses a self-resetting type speed brake handle structure. The middle of the connecting rod (8) penetrates into the rod sleeve (7), the adjusting anti-rotation block (6) and the spring A (4) to be inserted into the positioning pin A (5), the upper end and the lower end of the spring A (4) abut against the adjusting anti-rotation block (6) and the lower end of the rod sleeve (7) respectively, the rolling mechanism (3) is installed at the lower end of the connecting rod (8), the gear plate (1) is installed on the lower end face of the rod sleeve (7), and the rolling mechanism (3) is clamped into a groove formed in the lower end of the gear plate (1). A positioning pin B (10) is installed at the lower end of the gear plate (1) and makes contact with the limiting mechanism (2). The spoiler has a retraction position, the connecting rod can be reset to the retraction position within the range of-5 degrees to 0 degree, the preset function is achieved, the spoiler is rapidly opened, and potential safety risks are avoided under the emergency situation.

Description

Technical Field

[0001] The invention belongs to the technical field of flight control systems, and in particular relates to a self-resetting speed brake handle structure. Background Art

[0002] The speed brake handle is a control device used to control the speed brake on an aircraft. Its main function is to control the deployment and retraction of the spoiler when the aircraft is landing or decelerating. The speed brake structure in the prior art has no retracted position, so the aircraft cannot quickly open the spoiler, which fails to achieve the purpose of rapid deceleration. In addition, the pull rod mechanism cannot automatically reset to the retracted position within the range of -5° to 0°, resulting in the inability to achieve the preset function. In an emergency, potential safety risks cannot be avoided. Summary of the invention

[0003] The object of the present invention is to overcome the above-mentioned shortcomings and provide a speed brake structure with a retracted position, which can satisfy the requirement that the connecting rod can be reset to the retracted position within the range of -5° to 0°, realize the preset function, and the spoiler can be opened quickly to avoid potential safety risks. The self-resetting speed brake handle structure.

[0004] The purpose of the present invention and the solution of its main technical problems are achieved by adopting the following technical solutions: A self-resetting speed reducer handle structure of the present invention comprises a shift plate, a limiting mechanism, a rolling mechanism, a spring A, a positioning pin A, an adjusting anti-rotation block, a rod sleeve, a connecting rod, and a positioning pin B, wherein the middle portion of the connecting rod penetrates the rod sleeve, the adjusting anti-rotation block, the spring A is inserted into the positioning pin A, the upper and lower ends of the spring A respectively abut against the adjusting anti-rotation block and the lower end of the rod sleeve, the lower end of the connecting rod is provided with a rolling mechanism, the lower end surface of the rod sleeve is provided with a shift plate, the rolling mechanism is inserted into a groove provided at the lower end of the shift plate, the upper and lower ends of the limiting mechanism are respectively connected to the shift plate, the lower end of the shift plate is provided with a positioning pin B, and the positioning pin B contacts the limiting mechanism.

[0005] The lower end of the groove arranged at the lower end of the shift plate is arc-shaped, and the upper end of the groove is inclined in the shape of a letter "1".

[0006] The limit mechanism consists of a limit plate, a pin, a bracket, an adjusting rod, and a spring B. The two ends of the spring B are respectively mounted on the limit plate and the adjusting rod. The limit plate is placed on the shift plate and can be rotatably inserted into the pin and screwed into the nut. The adjusting rod is inserted into the bracket and screwed into the nut. The bracket is installed on the shift plate by bolts.

[0007] The rolling mechanism is composed of a fan-shaped head, a bearing, a shaft and a nut. A fan-shaped head is arranged at one end of the shaft. The bearing on the shaft sleeve is inserted into the lower end of the connecting rod and screwed into the nut. The bearing is inserted into the gear plate and can roll in the groove arranged at the lower end of the gear plate.

[0008] A handle is installed on the upper end of the connecting rod.

[0009] A plurality of holes for up and down adjustment are arranged in the middle of the connecting rod.

[0010] Compared with the prior art, the present invention has obvious beneficial effects; from the above technical scheme, it can be seen that: the rod sleeve is inserted into the middle of the connecting rod, the anti-rotation block is adjusted, and the spring A is inserted into the positioning pin A. The upper and lower ends of the spring A respectively abut against the anti-rotation block and the lower end of the rod sleeve. The lower end of the connecting rod is equipped with a rolling mechanism, and the lower end surface of the rod sleeve is equipped with a shift plate. The rolling mechanism is inserted into the groove set at the lower end of the shift plate. The upper and lower ends of the limit mechanism are respectively connected to the shift plate. The lower end of the shift plate is equipped with a positioning pin B, and the positioning pin B contacts the limit mechanism. Figure 2 Soft stop, press the handle, the handle drives the connecting rod and the rolling mechanism to move downward, the bearing escapes from the small arc groove above the arc groove set at the lower end of the shift plate, and then push the handle to make the bearing roll, moving from the soft stop in the middle to the maximum position at one end and the retracted position at the other end. When the bearing rolls to the retracted position, spring A drives the adjustment anti-rotation block to move upward, the adjustment anti-rotation block drives the connecting rod to move upward, the connecting rod drives the shaft to move upward, the shaft drives the bearing to roll, the bearing rolls over the limit plate and enters the retracted position at the lower end of the 1-shaped groove set at the lower end of the shift plate. The bearing is blocked by the limit plate, and the handle is pulled, the handle drives the connecting rod to move upward, the bearing drives the limit plate to move, the limit plate rotates around the pin, the spring B is compressed, and the bearing enters the upper pre-position in the inclined 1-shaped groove set at the lower end of the shift plate. The bearing can rotate at any position between -5° and 0°, and the bearing can be reset to the retracted position. By setting a transverse spring B structure between the soft stop and the pre-position to meet the retracted position function requirements, and according to the pre-position and retracted position force value requirements and the calculation of each component force under the connecting rod holding condition at each position, it is ensured that the longitudinal component force is greater than the friction between the connecting rod, the bearing and the shift plate 1. The transverse spring mechanism and the spring A force value in the connecting rod can be adjusted. By stirring the handle of the speed reducer, the bearing moves along the arc groove on the shift plate and the inclined 1-shaped groove at the upper end. The handle and the connecting rod rotate along the shafts on both sides of the rod sleeve, and the shaft drives the RVDT to move. The corresponding angle signal is output by the RVDT and transmitted to the flight control system to control the opening angle of the spoiler. The speed reducer structure has a retracted position, which can meet the requirements that the connecting rod can be reset to the retracted position within the range of -5° to 0°, realize the preset function, and the spoiler opens quickly, avoiding potential safety risks in emergency situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a front view of the shift plate of the present invention; Figure 4 It is a structural schematic diagram of the limiting mechanism of the present invention; Figure 5 It is a structural schematic diagram of the limiting plate of the present invention; Figure 6 It is a structural schematic diagram of the rolling mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the fan-shaped head and the shaft of the present invention; Figure 8 It is a schematic diagram of the structure of the positioning pin A and the connecting rod of the present invention; Fig. 9 It is a structural schematic diagram of the connecting rod of the present invention; Fig.10 This is a usage state diagram of the maximum bit of the present invention; Fig.11 This is a diagram of the use state of the present invention in the retracted position; Fig.12 It is a diagram of the use state of the pre-positioning of the present invention; Fig.13 This is a diagram of the use state of the present invention in the retracted position and the pre-positioned position. Fig.14 It is an installation diagram of the present invention.

[0012] Reference numerals: 1. Shift plate, 2. Limiting mechanism, 3. Rolling mechanism, 4. Spring A, 5. Locating pin A, 6. Adjusting anti-rotation block, 7. Rod sleeve, 8. Connecting rod, 9. Handle, 10. Locating pin B, 11. Bracket, 21. Limiting plate, 22. Pin, 23. Bracket, 24. Adjusting rod, 25. Spring B, 31. Fan-shaped head, 32. Bearing, 33. Shaft, 34. Nut. 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] A self-resetting deceleration brake handle structure of the present invention comprises a shift plate 1, a limiting mechanism 2, a rolling mechanism 3, a spring A4, a positioning pin A5, an adjustment anti-rotation block 6, a rod sleeve 7, a connecting rod 8, a handle 9, and a positioning pin B10, wherein the middle part of the connecting rod 8 penetrates the rod sleeve 7, the adjustment anti-rotation block 6, the spring A4 is inserted into the positioning pin A5, the upper and lower ends of the spring A4 respectively abut against the adjustment anti-rotation block 6 and the lower end of the rod sleeve 7, the rolling mechanism 3 is installed at the lower end of the connecting rod 8, the shift plate 1 is installed at the lower end surface of the rod sleeve 7, the rolling mechanism 3 is inserted into the groove provided at the lower end of the shift plate 1, the upper and lower ends of the limiting mechanism 2 are respectively connected to the shift plate 1, the positioning pin B10 is installed at the lower end of the shift plate 1, the positioning pin B10 contacts the limiting mechanism 2, the lower end of the groove provided at the lower end of the shift plate 1 is arc-shaped, and the upper end of the groove is arc-shaped. It is an inclined 1-shape, and the limit mechanism 2 is composed of a limit plate 21, a pin 22, a bracket 23, an adjusting rod 24, and a spring B25. The two ends of the spring B25 are respectively sleeved on the limit plate 21 and the adjusting rod 24. The limit plate 21 is placed on the shift plate 1 and can be rotatably inserted into the pin 22 and screwed into the nut. The adjusting rod 24 penetrates the bracket 23 and is screwed into the nut. The bracket 23 is installed on the shift plate 1 by bolts. The rolling mechanism 3 is composed of a fan-shaped head 31, a bearing 32, a shaft 33, and a nut 34. A fan-shaped head 31 is provided at one end of the shaft 33, and the shaft 33 is sleeved with a bearing 32 and penetrates the lower end of the connecting rod 8 and is screwed into the nut 34. The bearing 32 is inserted into the shift plate 1 and can roll in the groove set at the lower end of the shift plate 1. A handle 9 is installed on the upper end of the connecting rod 8, and a plurality of holes for adjusting up and down are provided in the middle of the connecting rod 8.

[0015] When in use, the rod sleeve 7 is rotatably mounted on the bracket 11 through a bearing, a circular gear is fixedly mounted on the side of the middle part of the rod sleeve 7, and the circular gear is respectively meshed with the fan-shaped gears of multiple RVDTs. The shift plate 1 is fixedly mounted on the bracket 11, from the pre-position to the maximum position, the handle 9 is pressed, and the connecting rod 8 drives the bearing 32 to move downward, overcoming the elastic force of the transverse spring B25 between the pre-position and the retracted position and the elastic force of the compression spring A4 on the connecting rod 8, so that the rolling bearing 32 at the lower end of the connecting rod 8 moves downward along the inclined 1-shaped groove set on the shift plate 1, from the pre-position to the retracted position. At the same time, the rod sleeve 7 drives the circular gear to rotate, the circular gear drives the fan-shaped gear to rotate, and the rotation of the fan-shaped gear drives the RVDT to move, and the corresponding angle signal is output by the RVDT and transmitted to the flight control system to achieve the control of the spoiler opening angle, see Fig.13 , continue to press the handle 9, the connecting rod 8 drives the bearing 32 to move downward, overcomes the elastic force of the spring B25 and the elastic force of the compression spring A4 on the connecting rod 8 and pulls it to the soft stop position, so that the connecting rod 8 moves to the soft stop position. At the same time, the rod sleeve 7 drives the circular gear to rotate, the circular gear drives the fan gear to rotate, and the fan gear rotates to drive the RVDT to move. The corresponding angle signal is output by the RVDT and transmitted to the flight control system to control the opening angle of the spoiler. Continue to pull the connecting rod 8 backward, see Figure 2 , until the maximum position is reached. Fig.10At the same time, the rod sleeve 7 drives the circular gear to rotate, the circular gear drives the fan-shaped gear to rotate, the rotation of the fan-shaped gear drives the RVDT to move, and the corresponding angle signal is output by the RVDT and transmitted to the flight control system to control the opening angle of the spoiler, wherein; the bearing 32 can maintain its position in the pre-position, retracted position, soft stop position, and maximum position under the restriction of the transverse spring B25 and the compression spring A4. At the same time, the rod sleeve 7 drives the circular gear to rotate, the circular gear drives the fan-shaped gear to rotate, and the rotation of the fan-shaped gear drives the RVDT to move, and the corresponding angle signal is output by the RVDT and transmitted to the flight control system to control the opening angle of the spoiler, and the connecting rod 8 can be at any position between -5° and 0°, and can be reset to the retracted position. Maximum position - pre-position, push the handle 9 toward the maximum position, push the handle 9 to drive the connecting rod 8, the connecting rod 8 drives the bearing 32 to roll, the bearing 32 overcomes the elastic force of the spring A4 on the connecting rod 8 and returns to the soft stop position, continue to pull the handle 9, push the handle 9 to drive the connecting rod 8, the connecting rod 8 drives the bearing 32 to roll to between -5° and 0°, the handle 9, the connecting rod 8, and the bearing 32 automatically return to the retracted position, continue to pull the handle 9 upwards, push the handle 9 to drive the connecting rod 8, the connecting rod 8 drives the bearing 32 to roll, the bearing 32 overcomes the elastic force of the transverse spring B25 and the elastic force of the compression spring A4 on the connecting rod 8 and returns to the pre-position, which can meet the requirement that the connecting rod can be reset to the retracted position within the range of -5° to 0°, realize the preset function, and the spoiler opens quickly to avoid potential safety risks in emergency situations.

[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 self-resetting speed brake handle structure, comprising a shift plate (1), a limiting mechanism (2), a rolling mechanism (3), a spring A (4), a positioning pin A (5), an adjustment anti-rotation block (6), a rod sleeve (7), a connecting rod (8), and a positioning pin B (10), characterized in that; The middle part of the connecting rod (8) is inserted into the rod sleeve (7), the adjusting anti-rotation block (6), and the spring A (4) is inserted into the positioning pin A (5). The upper and lower ends of the spring A (4) respectively abut against the adjusting anti-rotation block (6) and the lower end of the rod sleeve (7). The lower end of the connecting rod (8) is equipped with a rolling mechanism (3). The lower end surface of the rod sleeve (7) is equipped with a shift plate (1). The rolling mechanism (3) is inserted into a groove provided at the lower end of the shift plate (1). The upper and lower ends of the limiting mechanism (2) are respectively connected to the shift plate (1). The lower end of the shift plate (1) is equipped with a positioning pin B (10). The positioning pin B (10) contacts the limiting mechanism (2).

2. The self-resetting speed brake handle structure according to claim 1, characterized in that: The lower end of the groove arranged at the lower end of the shift plate (1) is arc-shaped, and the upper end of the groove is inclined in the shape of a letter "1".

3. The self-resetting speed brake handle structure according to claim 1, characterized in that; The limiting mechanism (2) is composed of a limiting plate (21), a pin (22), a bracket (23), an adjusting rod (24), and a spring B (25). The two ends of the spring B (25) are respectively sleeved on the limiting plate (21) and the adjusting rod (24). The limiting plate (21) is placed on the shift plate (1) and can be rotatably inserted into the pin (22) and screwed into the nut. The adjusting rod (24) penetrates the bracket (23) and screws into the nut. The bracket (23) is mounted on the shift plate (1) by bolts.

4. The self-resetting speed brake handle structure according to claim 1, characterized in that; The rolling mechanism (3) is composed of a fan-shaped head (31), a bearing (32), a shaft (33), and a nut (34). The fan-shaped head (31) is arranged at one end of the shaft (33). The shaft (33) is sleeved with the bearing (32), inserted into the lower end of the connecting rod (8), and the nut (34) is screwed into the lower end. The bearing (32) is inserted into the shift plate (1) and can roll in a groove arranged at the lower end of the shift plate (1).

5. The self-resetting speed brake handle structure according to claim 1, characterized in that; A handle (9) is mounted on the upper end of the connecting rod (8).

6. The self-resetting speed brake handle structure according to claim 1, characterized in that; A plurality of holes for upward and downward adjustment are arranged in the middle of the connecting rod (8).

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