Helicopter pedal angle sensor mounting device

Abstract

The utility model belongs to the technical field of mechanical design, and particularly relates to a helicopter pedal angle sensor mounting device which comprises a mounting seat and a bushing. The mounting seat comprises a base and a boss; the base is plate-shaped, a center hole is formed in the middle of the base, and the boss is located on the edge of one side of the base. The bushing is mounted at an axis hole of the pedal mounting shaft; a rotating shaft of the angle sensor penetrates through a central hole of the mounting seat base and then is connected with the lining; the mounting seat boss is fixed on the side surface of the pedal; and the angle sensor flange is fixed on the boss-free side of the mounting seat base.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical design, and particularly relates to a helicopter pedal angle sensor installation device. Background Art

[0002] The wheel brake hydraulic system test is an important test item in the full simulation test of the hydraulic system of a certain type of aircraft, and it is a necessary means to verify whether the functions and performances of the wheel brake system meet the design requirements. Tests such as the operating force inspection, wheel brake time inspection, wheel brake number test, and wheel brake time inspection in the test items all require measuring the rotation angle of the pedal during wheel braking to evaluate whether the wheel brake system meets the technical requirements.

[0003] Due to the large difference between the mechanical structure of the pedal and the shape of the angle sensor, the angle sensor cannot be effectively and directly installed on the pedal, and the test conditions cannot be achieved. Therefore, there is an urgent need for a mechanical device to install the angle sensor on the pedal to solve this problem. Summary of the Utility Model

[0004] Purpose of the utility model: To provide a helicopter pedal angle sensor installation device, which installs the angle sensor on the pedal as required to measure the rotation angle of the pedal during the wheel brake test.

[0005] Technical solution:

[0006] A helicopter pedal angle sensor installation device includes: a mounting base and a bushing;

[0007] The mounting base includes a base and a boss; the base is plate-shaped, with a central hole in the middle, and the boss is located at one side edge of the base;

[0008] The bushing is installed at the axial center hole of the pedal mounting shaft;

[0009] The rotation shaft of the angle sensor passes through the central hole of the mounting base of the mounting seat and is connected to the inner control of the bushing;

[0010] The boss of the mounting base is fixed on the side of the pedal;

[0011] The flange of the angle sensor is fixed on the side of the mounting base without the boss.

[0012] Further, a ring flange is provided on the end face of the bushing close to the angle sensor for radial limit.

[0013] Further, the boss of the mounting base is rectangular block-shaped and is fixed to the side of the pedal by bolts.

[0014] Further, the flange of the angle sensor is fixed to the side of the mounting base without the boss by bolts.

[0015] Further, the bushing is in interference fit with the axial center hole of the pedal mounting shaft.

[0016] Further, the rotation shaft of the angle sensor is an irregular circular shaft, and the inner hole of the bushing is an irregular circular hole that matches the outer shape of the rotation shaft of the angle sensor and is in clearance fit.

[0017] Further, the rotation shaft of the angle sensor is provided with a radial protrusion.

[0018] Further, a plane is machined axially along the surface of the rotation shaft of the angle sensor.

[0019] Beneficial effects

[0020] The utility model solves the problem that the angle sensor cannot be connected and installed with the pedal due to the differences in shape and structure, and enables the test conditions to meet the test requirements. The device is simple and quick to install, convenient to disassemble, and has good maintainability. Description of the drawings

[0021] Figure 1 Schematic diagram of the composition of an installation device for a helicopter pedal angle sensor

[0022] Figure 2 Assembly sectional view of an installation device for a helicopter pedal angle sensor

[0023] Figure 3 Schematic diagram of the assembly relationship of an installation device for a helicopter pedal angle sensor

[0024] Figure 4 Schematic diagram of the implementation of an installation device for a helicopter pedal angle sensor. Detailed implementation manners

[0025] The following further describes the present utility model in detail with reference to the drawings. Refer to Figures 1-4 . An installation device for a helicopter pedal angle sensor includes a mounting base 1 and a bushing 3. The bushing is of a cylindrical structure, and a hole for installing the rotation shaft of the angle sensor is provided in the middle, and this hole is a three-quarter irregular circular hole. The mounting base is composed of a fixed sensor base and a boss. The installation steps are as follows: the outer surface of the bushing 3 is fixed at the axial center hole of the pedal mounting shaft of the pedal 6 through interference fit, the rotation shaft of the angle sensor 2 passes through the central hole on the base of the mounting base 1 and is connected and fixed to the inner hole of the bushing; then the boss of the mounting base 1 is installed on the side of the pedal of the pedal 6 through a bolt 5; the flange of the angle sensor 3 is fixedly connected to the base of the mounting base 1 through a bolt 4.

[0026] In the pedal angle sensor installation device, the bushing makes the rotation shaft of the angle sensor relatively fixed with the rotation shaft of the pedal, and at the same time, the flange of the angle sensor and the pedal of the pedal rotate simultaneously, making the originally rotating shaft become a relatively stationary shaft and the originally fixed flange become a relatively rotating component.

Claims

1. A helicopter pedal angle sensor mounting device, characterized in that: The device includes: a mounting base and a bushing; The mounting base includes a base and a boss; the base is plate-shaped, with a central hole in the middle, and the boss is located at one side edge of the base; The bushing is installed at the axial center hole of the pedal mounting shaft; The angle sensor rotating shaft passes through the central hole of the mounting base and is connected to the inner control of the bushing; The boss of the mounting base is fixed to the side of the pedal; The angle sensor flange is fixed to the side of the mounting base without the boss; 2. The device according to claim 1, wherein: An annular flange is provided on the end face of the bushing close to the angle sensor for radial limit; 3. The device according to claim 2, characterized in that: The boss of the mounting base is rectangular block-shaped and is fixed to the side of the pedal by bolts; 4. The device according to claim 3, characterized in that: The angle sensor flange is fixed to the side of the mounting base without the boss by bolts; 5. The device according to claim 3, characterized in that: The bushing is in interference fit with the axial center hole of the pedal mounting shaft; 6. The device according to claim 3, characterized in that: The angle sensor rotating shaft is an irregular circular shaft, and the inner hole of the bushing is an irregular circular hole that matches the outer shape of the angle sensor rotating shaft and is in clearance fit; 7. The device according to claim 6, characterized in that: The angle sensor rotating shaft is provided with a radial protrusion; 8. The device according to claim 6, characterized in that: A plane is machined axially on the surface of the angle sensor rotating shaft.

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