Fine adjustment device and fine adjustment method for meshing depth of transmission gear

Abstract

The invention provides a fine adjustment device for the meshing depth of a transmission gear, which belongs to the technical field of attack angle sensors and comprises a flange bracket, a mounting bracket, a rotary transformer assembly, a damper assembly and a weather vane rotating shaft assembly, the rotary transformer assembly, the damper assembly and the weather vane rotating shaft assembly are fixed in the circular mounting groove through an eccentric mounting flange and are meshed with one another, and mounting bracket scale marks are arranged on the eccentric mounting flange and the circular mounting groove. According to the device, a linear relation is established between the meshing depth and the scale marks, and the gear meshing depth debugging process of all parts of the attack angle sensor, which is adjusted according to artificial experience, is converted into an indication value which can be directly visually observed. The requirement for experience of operators is lowered, unmeasurable artificial experience is solidified into measurable indication data, the debugging efficiency is improved, and the number of times of wind tunnel test verification caused by repeated debugging is reduced.

Description

Technical Field

[0001] This invention belongs to the field of angle of attack sensor technology, specifically relating to a fine-tuning device and method for the meshing depth of a transmission gear. Background Technology

[0002] Angle of attack (AOA) sensors are crucial components of aircraft stall protection systems and are essential for flight safety. Mounted on both sides of the aircraft fuselage, these weather vanes extend beyond the fuselage and rotate with the aircraft's attitude during flight, influenced by airflow. This rotation drives gears on the weather vane's shaft, which mesh with gears on a gear damper (reducing aerodynamic disturbance and improving stability) and a rotary transformer (which can output corresponding angle signals by rotating its shaft). The rotary transformer then outputs the corresponding angle of attack signal, thus enabling the measurement of the aircraft's angle of attack.

[0003] Traditional angle-of-attack sensors are designed to meet the requirements of aircraft angle-of-attack gear measurement under normal circumstances. However, due to the limitations of the sensor's structural space and the influence of processing and assembly precision, angle-of-attack sensors are inevitably affected by assembly errors and rotational friction between moving parts, which can cause the weather vane to be obstructed or stuck.

[0004] At this point, it is necessary to adjust the installation position of the damper and the rotary transformer to adjust the gear meshing depth between the components (different meshing depths will increase or decrease the rotational torque when the force is the same), so as to overcome the adverse effects caused by assembly errors and friction.

[0005] Traditional gear meshing depth adjustment involves creating large slots in the mounting holes on the damper or rotary transformer mounting flange. The gear meshing depth is then adjusted by manually pushing or pulling the mounting screws towards the center of the shaft to fine-tune their position within the slots. Because the meshing depth is relatively small, this adjustment relies entirely on the operator's experience and lacks explicit quantitative indicators. The assembly and adjustment process often requires highly experienced operators to perform multiple adjustments and wind tunnel tests, resulting in significant consumption of human resources, testing resources, and production time during production. Summary of the Invention

[0006] This invention aims to solve the problems of current angle-of-attack sensors where the gear meshing depth is entirely dependent on manual operation within a confined space, making it impossible to quantify parameter adjustments, resulting in a waste of human and experimental resources and a long production cycle.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fine-tuning device for the meshing depth of a transmission gear, comprising a flange bracket, a mounting bracket with multiple circular mounting slots fixed on the flange bracket, a rotary transformer assembly, a damper assembly, and a weathervane shaft assembly. The rotary transformer assembly, the damper assembly, and the weathervane shaft assembly are engaged. The rotary transformer assembly, the damper assembly, and the weather vane shaft assembly are all fixed in the circular mounting groove of the mounting bracket by an eccentric mounting flange. The eccentric mounting flange is provided with eccentric mounting flange scale lines. The circular mounting groove is provided with mounting bracket scale lines.

[0008] The fine-tuning device for the meshing depth of the transmission gear provided by the present invention also has the following technical features: the rotary transformer assembly includes a rotary gear, the damper assembly includes a damping gear, the weather vane shaft assembly includes a weather vane gear, the rotary gear, the damping gear mesh with the weather vane, and the meshing depth is adjusted by an eccentric mounting flange.

[0009] The fine-tuning device for the meshing depth of the transmission gear provided by the present invention also has the following technical feature: the weather vane shaft assembly further includes a weather vane fixed to the weather vane gear via the weather vane shaft.

[0010] The fine-tuning device for the meshing depth of the transmission gear provided by the present invention also has the following technical features: the circular mounting groove includes a central circular groove and a plurality of annular grooves arranged around the central circular groove; the weather vane shaft assembly is installed in the central circular groove; and the rotary transformer assembly and the damper assembly are installed in two adjacent annular grooves.

[0011] The fine-tuning device for the meshing depth of transmission gears provided by the present invention also has the following technical feature: the rotary transformer assembly, the damper assembly, and the weathervane shaft assembly are configured such that the gear meshing depth increases when the eccentric mounting flange rotates clockwise.

[0012] Another object of the present invention is to provide a method for fine-tuning the meshing depth of transmission gears, the method being implemented based on the fine-tuning device for the meshing depth of transmission gears described in any of the preceding claims.

[0013] The method for fine-tuning the meshing depth of transmission gears provided by this invention also has the following technical features, including: Install a fine-tuning device for the meshing depth of the transmission gear; Rotate the eccentric mounting flange to change the engagement degree of the rotary transformer assembly, the damper assembly, and the weather vane shaft assembly fixed in the circular mounting groove of the mounting bracket; The linear relationship between engagement depth and rotation angle is obtained by reading the scale lines of the eccentric mounting flange and the mounting bracket. Rotate the eccentric mounting flange according to the scale lines as needed to adjust the meshing depth of the transmission gears.

[0014] Beneficial effects: Compared with existing technologies, the fine-tuning device provided by this invention establishes a linear relationship between the meshing depth and the scale line, transforming the adjustment process of the gear meshing depth of the angle of attack sensor components, which relies on manual experience, into a directly visually indicated value. This not only reduces the requirements for operator experience and solidifies immeasurable manual experience into measurable indicated data, but also improves debugging efficiency and reduces the number of wind tunnel tests required due to repeated debugging. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the fine-tuning device provided in the embodiment of the present invention; Figure 2 This is a schematic diagram showing the meshing positions of the various components provided in the embodiments of the present invention; Figure 3 This is a schematic diagram of the structure in which the gear meshing deepens when the eccentric mounting flange rotates clockwise, as mentioned in the embodiment of the present invention. Figure 4 This is a schematic diagram of the structure in an embodiment of the present invention, showing that the gear completely disengages when the eccentric mounting flange rotates counterclockwise. Figure 5 This is a schematic diagram of the structure of the weathervane rotating shaft assembly mentioned in the embodiments of the present invention; Figure 6 This is a schematic diagram of the scale line structure mentioned in the embodiments of the present invention. Among them, 1: eccentric mounting flange; 2: rotary transformer assembly; 3: damper assembly; 4: weather vane shaft assembly; 5: mounting bracket; 6: flange bracket; 7: rotary gear; 8: damping gear; 9: weather vane gear; 10: weather vane; 11: weather vane shaft; 12: circular mounting groove; 13: eccentric mounting flange scale line; 14: mounting bracket scale line. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0018] In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0019] Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0020] The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of these terms in this invention based on the specific circumstances.

[0021] like Figure 1-6 As shown, this embodiment of the invention provides a fine-tuning device for the meshing depth of transmission gears, including a flange bracket 6, a mounting bracket 5 with multiple circular mounting slots 12 fixed on the flange bracket 6, a rotary transformer assembly 2, a damper assembly 3, and a weathervane shaft assembly 4. The rotary transformer assembly 2, the damper assembly 3, and the weathervane shaft assembly 4 are meshed with each other. The rotary transformer assembly 2, the damper assembly 3, and the weather vane shaft assembly 4 are all fixed in the circular mounting groove 12 of the mounting bracket 5 via the eccentric mounting flange 1. The eccentric mounting flange 1 is provided with eccentric mounting flange scale lines 13. The circular mounting groove 12 is provided with mounting bracket scale lines 14.

[0022] In some embodiments, the rotary transformer assembly 4 includes a rotary gear 7, the damper assembly 3 includes a damping gear 8, and the weather vane shaft assembly 4 includes a weather vane gear 9. The rotary gear 7, the damping gear 8, and the weather vane 9 mesh with each other, and the meshing depth is adjusted by the eccentric mounting flange 1.

[0023] In some embodiments, the weather vane shaft assembly 4 also includes a weather vane 10 fixed to the weather vane gear 9 via a weather vane shaft 11.

[0024] In some embodiments, the circular mounting groove 12 includes a central circular groove and a plurality of annular grooves arranged around the central circular groove. The weathervane shaft assembly 4 is mounted in the central circular groove, and the rotary transformer assembly 2 and the damper assembly 3 are mounted in two adjacent annular grooves. The number of annular grooves can be increased or decreased according to actual needs.

[0025] In some embodiments, the rotary transformer assembly 2, the damper assembly 3, and the weathervane shaft assembly 4 are configured such that the gear meshing deepens when the eccentric mounting flange 1 rotates clockwise.

[0026] In some embodiments, a method for fine-tuning the meshing depth of a transmission gear is provided, characterized in that the method is implemented based on the fine-tuning device for the meshing depth of the transmission gear as described in any of the preceding claims, and includes: Install a fine-tuning device for the meshing depth of the transmission gear; Rotate the eccentric mounting flange 1 to change the engagement degree of the rotary transformer assembly 2, the damper assembly 3, and the wind vane shaft assembly 4, which are fixed in the circular mounting groove 12 of the mounting bracket 5. The linear relationship between engagement depth and rotation angle is obtained by reading the scale line 13 of the eccentric mounting flange and the scale line 14 of the mounting bracket; Rotate the eccentric mounting flange 1 according to the scale lines as needed to adjust the meshing depth of the transmission gear.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A fine adjustment device for the engagement depth of a transmission gear, characterized in that The flange support, the mounting support with multiple circular mounting slots fixed on the flange support, the resolver assembly, the damper assembly and the wind vane rotating shaft assembly, The resolver assembly, the damper assembly and the wind vane rotating shaft assembly are engaged, The resolver assembly, the damper assembly and the wind vane rotating shaft assembly are fixed in the circular mounting slots of the mounting support through the eccentric mounting flange, The eccentric mounting flange is provided with an eccentric mounting flange scale line, The circular mounting slot is provided with a mounting support scale line.

2. The fine adjustment device for the depth of engagement of a drive gear according to claim 1, characterized in that The resolver assembly includes a resolver gear, the damper assembly includes a damper gear, the wind vane rotating shaft assembly includes a wind vane gear, the resolver gear, the damper gear and the wind vane gear are engaged with each other, and the engagement depth is adjusted through the eccentric mounting flange.

3. A fine adjustment device for the depth of engagement of a drive gear according to claim 2, characterized in that The wind vane rotating shaft assembly further includes a wind vane fixed on the wind vane gear through the wind vane rotating shaft.

4. The fine adjustment device for the depth of engagement of a drive gear according to claim 1, characterized in that The circular mounting slot includes a center circular slot and multiple annular slots arranged around the center circular slot, the wind vane rotating shaft assembly is installed in the center circular slot, and the resolver assembly and the damper assembly are installed in two adjacent annular slots.

5. The fine adjustment device for the depth of engagement of a drive gear according to claim 1, characterized in that The resolver assembly, the damper assembly and the wind vane rotating shaft assembly are configured to deepen the gear engagement degree when the eccentric mounting flange is rotated clockwise.

6. A method of fine adjustment of the engagement depth of a transmission gear, characterized in that The method is based on the fine adjustment device of the engagement depth of the transmission gear according to any one of claims 1-5.

7. The method of fine adjustment of the depth of engagement of a drive gear according to claim 6, characterized in that, It includes: installing the fine adjustment device of the engagement depth of the transmission gear; rotating the eccentric mounting flange to change the engagement degree of the resolver assembly, the damper assembly and the wind vane rotating shaft assembly fixed in the circular mounting slots of the mounting support; obtaining the linear relationship between the engagement depth and the rotation angle by reading the eccentric mounting flange scale line and the mounting support scale line; rotating the eccentric mounting flange according to the scale line as needed to adjust the engagement depth of the transmission gear.

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