An engine automatic throttle lever control device

Abstract

This invention relates to an automatic throttle control device for an engine. The invention comprises a throttle lever mechanism, a servo transmission mechanism, and a worm gear transmission mechanism within a housing. The throttle lever mechanism includes a throttle lever handle, a first shaft, and a second shaft. The throttle lever handle is connected to the first shaft, which is connected to a first gear. The second shaft is connected to a second gear and a third gear, with the first gear meshing with the second gear. The servo transmission mechanism includes a servo motor and a third shaft connected to the drive end of the servo motor. The third shaft is connected to a first angle sensor and a fourth gear. The worm gear transmission mechanism includes a damper, a fourth shaft, a fifth gear, a worm gear shaft, a worm gear connected to the worm gear shaft, and a worm cooperating with the worm gear. The fifth gear meshes with the fourth gear. One end of the fourth shaft is connected to the second angle sensor, and the other end of the fourth shaft is connected to the worm gear shaft via the damper. This invention enables closed-loop control of the servo motor, resulting in high automatic control accuracy.

Description

Technical Field

[0001] This invention relates to the field of control device technology, and in particular to an automatic throttle control device for an engine. Background Technology

[0002] The aircraft engine throttle lever control device (hereinafter referred to as: automatic throttle lever device) is used to realize the remote control of the throttle lever of the fuel pump regulator of the aircraft engine, and should have functions such as calibration, tracking control, fault detection, and fault handling.

[0003] To fulfill the various functional requirements, a combination of automatic control and manual push-pull mechanisms is typically used with stepper servo motors. However, existing stepper servo motors lack closed-loop control, resulting in low precision in automatic control and the manual push-pull mechanism failing to meet the device's requirements due to the absence of a fine-tuning mechanism. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art that the stepper servo motor does not form a closed-loop control, the accuracy is low during automatic control, and the manual push-pull part cannot meet the requirements of the device due to the lack of a fine adjustment mechanism. The present invention provides an automatic throttle lever control device for engines that is convenient to operate, stable and reliable, durable and feasible.

[0005] To solve the above-mentioned technical problems, the present invention provides an automatic throttle lever control device for an engine, including a housing, a housing cover connected to the upper end of the housing, and the housing is provided with a throttle lever mechanism, a servo transmission mechanism and a worm gear transmission mechanism;

[0006] The throttle lever mechanism includes a throttle lever handle, a first shaft, and a second shaft. The throttle lever handle is connected to the first shaft. The first shaft is connected to a first gear, and the second shaft is connected to a second gear and a third gear. The first gear meshes with the second gear.

[0007] The servo transmission mechanism includes a servo motor and a third shaft connected to the drive end of the servo motor. The third shaft is connected to a first angle sensor and a fourth gear meshing with the third gear.

[0008] The worm gear transmission mechanism includes a damper, a fourth shaft, a fifth gear connected to the fourth shaft, a worm shaft, a worm wheel connected to the worm shaft, and a worm cooperating with the worm wheel. The fifth gear meshes with the fourth gear. One end of the fourth shaft is connected to a second angle sensor, and the other end of the fourth shaft is connected to the worm shaft through the damper.

[0009] In one embodiment of the present invention, the throttle lever mechanism further includes a mounting housing that is connected to and protrudes from the top cover of the housing. A first support frame and a second support frame are respectively connected to both ends of the mounting housing, and the first shaft is rotatably connected to the first support frame and the second support frame.

[0010] In one embodiment of the present invention, a display screen, operation buttons and indicator lights are arranged on the top cover of the box.

[0011] In one embodiment of the present invention, a throttle lever self-locking lever is connected to the lever body of the throttle lever handle. The throttle lever self-locking lever includes a self-locking housing sleeved on the lever body of the throttle lever handle and a lever body that is telescopically connected to the self-locking housing by a spring. The first support frame or the second support frame is provided with a locking groove that cooperates with the lever body.

[0012] In one embodiment of the present invention, the outer ends of the first support frame and / or the second support frame are connected to throttle lever limiting nuts along the rotation direction of the throttle lever handle.

[0013] In one embodiment of the present invention, the bottom of the housing is further provided with a first bearing seat and a second bearing seat, and the two ends of the worm gear shaft are respectively rotatably connected to the first bearing seat and the second bearing seat.

[0014] In one embodiment of the present invention, the upper end of the worm gear passes through the top cover of the housing and is connected to a fine-tuning knob.

[0015] In one embodiment of the present invention, the bottom of the housing is provided with a third support frame, a fourth support frame, a fifth support frame and a sixth support frame in sequence, the second shaft passes through the fifth support frame and is rotatably connected to the third support frame, the fourth support frame and the sixth support frame respectively, the second gear is located between the third support frame and the fourth support frame, and the third gear is located between the fifth support frame and the sixth support frame.

[0016] In one embodiment of the present invention, the third shaft is rotatably connected to the fifth support frame and the sixth support frame, and a seventh support frame is also provided on one side of the fifth support frame. The first angle sensor is connected to the seventh support frame, one end of the third shaft is connected to the first angle sensor through a first coupling, and the output end of the servo motor is connected to the third shaft through a second coupling.

[0017] In one embodiment of the present invention, the fourth axis is rotatably connected to the fifth support frame and the sixth support frame, and the second angle sensor is connected to the sixth support frame.

[0018] The technical solution of the present invention has the following advantages compared with the prior art:

[0019] The automatic throttle lever control device for engines described in this invention enables the servo motor to form a closed-loop control, resulting in high automatic control accuracy. It is also convenient to operate, stable and reliable, durable and feasible. Attached Figure Description

[0020] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0021] Figure 1 This is an overall axonometric schematic diagram of an automatic throttle lever device according to the present invention.

[0022] Figure 2 This is a top view of the internal structure of an automatic throttle lever device according to the present invention.

[0023] Figure 3 This is a schematic diagram of the internal transmission structure of an automatic throttle lever device according to the present invention.

[0024] Figure 4 This is an isometric view of the internal transmission structure of an automatic throttle lever device according to the present invention.

[0025] Instruction manual drawing reference numerals: 1. Housing; 2. Housing cover; 3. Throttle lever; 4. First shaft; 5. Second shaft; 6. First gear; 7. Second gear; 8. Third gear; 9. Servo motor; 10. Third shaft; 11. First angle sensor; 12. Fourth gear; 13. Damper; 14. Fourth shaft; 15. Fifth gear; 16. Worm gear shaft; 17. Worm gear; 18. Worm; 19. Second angle sensor; 20. Mounting housing; 21. First support frame; 22. ... 23. Support frame; 24. Display screen; 25. Operation button; 26. Indicator light; 27. Power supply box; 28. Circuit control box; 29. ​​Power interface; 20. Throttle lever self-locking lever; 31. Throttle lever limit nut; 32. First bearing seat; 33. Second bearing seat; 34. Fine adjustment knob; 35. Third support frame; 36. Fourth support frame; 37. Fifth support frame; 38. Sixth support frame; 39. Seventh support frame; 40. First coupling; 41. Second coupling; 42. Locking groove. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0027] Reference Figures 1 to 4 As shown, an automatic throttle lever control device for an engine according to the present invention includes a housing 1, a housing cover 2 connected to the upper end of the housing 1, and the housing 1 is provided with a throttle lever mechanism, a servo transmission mechanism and a worm gear transmission mechanism.

[0028] The throttle lever mechanism includes a throttle lever handle 3, a first shaft 4, and a second shaft 5. The throttle lever handle 3 is connected to the first shaft 4. The first shaft 4 is connected to a first gear 6. The second shaft 5 is connected to a second gear 7 and a third gear 8. The first gear 6 and the second gear 7 mesh.

[0029] The servo transmission mechanism includes a servo motor 9 and a third shaft 10 connected to the drive end of the servo motor 9. The third shaft 10 is connected to a first angle sensor 11 and a fourth gear 12 that meshes with a third gear 8.

[0030] The worm gear transmission mechanism includes a damper 13, a fourth shaft 14, a fifth gear 15 connected to the fourth shaft 14, a worm shaft 16, a worm wheel 17 connected to the worm shaft 16, and a worm 18 that meshes with the worm wheel 17. The fifth gear 15 meshes with the fourth gear 12. One end of the fourth shaft 14 is connected to a second angle sensor 19, and the other end of the fourth shaft 14 is connected to the worm shaft 16 through the damper 13.

[0031] Specifically, the throttle lever mechanism also includes a mounting housing 20 that is connected to and protrudes from the upper cover 2 of the housing. A first support frame 21 and a second support frame 22 are respectively connected to both ends of the mounting housing 20. The first shaft 4 is rotatably connected to the first support frame 21 and the second support frame 22. When the throttle lever handle 3 is pushed, the first shaft 4 drives the first gear 6 to rotate, transmitting force to the second gear 7. The third gear 8 and the fourth gear 12 mesh on the same plane, and the fourth gear 12 meshes with the fifth gear 15 to transmit torque.

[0032] Specifically, the top cover 2 of the housing is equipped with a display screen 23, operation buttons 24, and indicator lights 25 to display the real-time status of the automatic throttle device. The bottom of the housing 1 is also equipped with a power supply box 26 and a circuit control box 27, and the side wall of the housing 1 is also equipped with a power interface 28. In this embodiment, the control method adopts PLC control.

[0033] Specifically, a throttle lever self-locking lever 29 is connected to the rod body of the throttle lever handle 3. The throttle lever self-locking lever 29 includes a self-locking housing sleeved on the rod body of the throttle lever handle 3 and a rod body connected to the self-locking housing by a spring. The first support frame (21) or the second support frame 22 is provided with a locking groove 41 that cooperates with the rod body. When it is necessary to push the throttle lever handle 3, gently lift the throttle lever self-locking lever 29 and then push the throttle lever handle 3 to the appropriate position.

[0034] Specifically, the outer ends of the first support frame 21 and / or the second support frame 22 are connected to throttle lever limit nuts 30 along the rotation direction of the throttle lever handle 3, which are used to limit the extreme positions of the throttle lever handle 3.

[0035] Specifically, the bottom of the housing 1 is also provided with a first bearing seat 31 and a second bearing seat 32, and the two ends of the worm gear shaft 16 are respectively rotatably connected to the first bearing seat 31 and the second bearing seat 32.

[0036] Specifically, the upper end of the worm gear 18 passes through the top cover 2 of the housing and is connected to a fine-tuning knob 33.

[0037] Specifically, the bottom of the housing 1 is provided with a third support frame 34, a fourth support frame 35, a fifth support frame 36 and a sixth support frame 37 in sequence. The second shaft 5 passes through the fifth support frame 36 and is rotatably connected to the third support frame 34, the fourth support frame 35 and the sixth support frame 37 respectively. The second gear 7 is located between the third support frame 34 and the fourth support frame 35, and the third gear 8 is located between the fifth support frame 36 and the sixth support frame 37.

[0038] Specifically, the third shaft 10 is rotatably connected to the fifth support frame 36 and the sixth support frame 37. The fifth support frame 36 is also provided with a seventh support frame 38 on one side. The first angle sensor 11 is connected to the seventh support frame 38. One end of the third shaft 10 is connected to the first angle sensor 11 through the first coupling 39. The output end of the servo motor 9 is connected to the third shaft 10 through the second coupling 40.

[0039] Specifically, the fourth shaft 14 is rotatably connected to the fifth support frame 36 and the sixth support frame 37, and the second angle sensor 19 is connected to the sixth support frame 37.

[0040] In the automatic mode, the throttle lever of this invention operates as follows: The servo motor 9 drives the fourth gear 12 to rotate, which in turn drives the third gear 8 to rotate. The second gear 7, which is on the same shaft as the third gear 8, also rotates. The second gear 7 meshes with the first gear 6, thus pushing the first gear 6 to rotate, which in turn causes the throttle lever handle 3, fixed to the first shaft 4, to rotate. This allows the movement of the throttle lever handle 3 to be clearly observed. Simultaneously, the first angle sensor 11 detects the rotation signal of the servo motor 9, which is then fed back to the display screen 23 via the circuit control box 27, allowing for further reading of the degree of rotation change. Similarly, if manual adjustment is used, the power is transmitted back from the throttle lever handle 3, and can also be received by the first angle sensor 11, thus displaying the data on the display screen 23.

[0041] Similarly, servo motor 9 drives the fourth gear 12 to rotate, which in turn drives the third gear 8 and the fifth gear 15. However, because the other end of the fourth shaft 14, where the fifth gear 15 is located, is a damper 13, and the worm gear 17 connected to the damper 13 cannot transmit torque in the reverse direction (the transmission of torque from the worm gear 17 to the worm 18 is directional; the worm 18 can drive the worm gear 17 to rotate, but not vice versa), the torque in this path is canceled out by the damper 13. Therefore, the torque in this path will not be displayed on the fine-tuning knob 33, and thus will not affect the rotation of the fine-tuning knob 33.

[0042] However, when the angle of the throttle lever needs to be fine-tuned after manual or automatic adjustment by the servo motor 9, the fine-tuning knob 33 is used. After the fine-tuning knob 33 is turned, it drives the worm gear 18 to rotate and continues to transmit power to the worm wheel 17. The worm wheel shaft 16 of the worm wheel 17 is connected to the damper 13. Through the damping effect of the damper 13, precise control of the throttle lever handle 3 can be achieved, thereby achieving precise fine-tuning. At the same time, the damper 13 also receives the angle rotation signal through the second angle sensor 19 at the end of the fourth shaft 14, which can then be fed back to the display screen 23.

[0043] In summary, the automatic throttle lever device and method proposed in this invention provide a high-quality, smooth, convenient, stable, reliable, durable and feasible automatic throttle lever device, which greatly improves the product's wide applicability.

[0044] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An engine automatic throttle lever control device characterized by, Includes a housing (1), the upper end of which is connected to a housing cover (2), and the housing (1) is provided with a throttle lever mechanism, a servo transmission mechanism and a worm gear transmission mechanism; The throttle lever mechanism includes a throttle lever handle (3), a first shaft (4) and a second shaft (5). The throttle lever handle (3) is connected to the first shaft (4). The first shaft (4) is connected to a first gear (6). The second shaft (5) is connected to a second gear (7) and a third gear (8). The first gear (6) meshes with the second gear (7). The servo transmission mechanism includes a servo motor (9) and a third shaft (10) connected to the drive end of the servo motor (9). The third shaft (10) is connected to a first angle sensor (11) and a fourth gear (12) meshing with a third gear (8). The worm gear transmission mechanism includes a damper (13), a fourth shaft (14), a fifth gear (15) connected to the fourth shaft (14), a worm shaft (16), a worm wheel (17) connected to the worm shaft (16), and a worm (18) that meshes with the worm wheel (17). The fifth gear (15) meshes with the fourth gear (12). One end of the fourth shaft (14) is connected to a second angle sensor (19), and the other end of the fourth shaft (14) is connected to the worm shaft (16) through the damper (13).

2. An engine automatic throttle lever control device according to claim 1, characterized in that, The throttle lever mechanism also includes a mounting housing (20) that is connected to and protrudes from the top cover (2) of the housing. The mounting housing (20) is connected to a first support frame (21) and a second support frame (22) at both ends. The first shaft (4) is rotatably connected to the first support frame (21) and the second support frame (22).

3. An engine automatic throttle lever control device according to claim 1, wherein The top cover (2) of the enclosure is equipped with a display screen (23), operation buttons (24) and indicator lights (25).

4. The engine automatic throttle lever control device according to claim 2, characterized in that, The throttle lever handle (3) is connected to a throttle lever self-locking lever (29). The throttle lever self-locking lever (29) includes a self-locking housing sleeved on the throttle lever handle (3) and a lever connected to the self-locking housing by a spring. The first support frame (21) or the second support frame (22) is provided with a locking groove (41) that cooperates with the lever.

5. The engine automatic throttle lever control device according to claim 2, characterized in that, The outer ends of the first support frame (21) and / or the second support frame (22) are connected to the throttle lever limit nut (30) along the rotation direction of the throttle lever handle (3).

6. The automatic throttle lever control device for an engine according to claim 1, characterized in that, The bottom of the housing (1) is also provided with a first bearing seat (31) and a second bearing seat (32), and the two ends of the worm gear shaft (16) are rotatably connected to the first bearing seat (31) and the second bearing seat (32) respectively.

7. An engine automatic throttle lever control device according to claim 1, wherein The upper end of the worm gear (18) passes through the top cover (2) of the housing and is connected to a fine-tuning knob (33).

8. An automatic throttle lever control for an engine as defined in claim 1, wherein The bottom of the housing (1) is provided with a third support frame (34), a fourth support frame (35), a fifth support frame (36) and a sixth support frame (37) in sequence. The second shaft (5) passes through the fifth support frame (36) and is rotatably connected to the third support frame (34), the fourth support frame (35) and the sixth support frame (37) respectively. The second gear (7) is located between the third support frame (34) and the fourth support frame (35), and the third gear (8) is located between the fifth support frame (36) and the sixth support frame (37).

9. An engine automatic throttle lever control device according to claim 8, wherein The third shaft (10) is rotatably connected to the fifth support frame (36) and the sixth support frame (37). The fifth support frame (36) is also provided with a seventh support frame (38) on one side. The first angle sensor (11) is connected to the seventh support frame (38). One end of the third shaft (10) is connected to the first angle sensor (11) through the first coupling (39). The output end of the servo motor (9) is connected to the third shaft (10) through the second coupling (40).

10. An engine automatic throttle lever control device according to claim 8, wherein The fourth axis (14) is rotatably connected to the fifth support frame (36) and the sixth support frame (37), and the second angle sensor (19) is connected to the sixth support frame (37).

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