CN112710225A

CN112710225A - Hoisting type pedal assembly angular displacement testing device and testing method

Info

Publication number: CN112710225A
Application number: CN202011444312.3A
Authority: CN
Inventors: 陆云杰; 孙自军; 王雯
Original assignee: Lanzhou Flight Control Co Ltd
Current assignee: Lanzhou Flight Control Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-04-27
Anticipated expiration: 2040-12-11
Also published as: CN112710225B

Abstract

The invention belongs to the technical field of cockpit testing, and particularly relates to a device and a method for testing angular displacement of a hoisting type pedal assembly. For a hoisting pedal assembly, the traditional clamp is difficult to clamp around the pedal assembly, the accumulated error is too large, and the surfaces of other parts are easy to damage. The angular displacement testing device comprises a rotary support, a potentiometer, a coupler and a support, wherein the potentiometer is installed on the support, the whole rotary support is of a U-shaped structure, an inner arm body of the rotary support is provided with a fork opening structure, the fork opening structure is attached to the outer surface of an outer lug of an upright post, an arched clamp is in clearance fit with a fixed shaft and is attached to the inner surface of the outer lug of the upright post, the fork opening structure and the arched clamp are connected in a clamping mode so as to rotate synchronously with the upright post, and the outer arm body of the rotary support is connected with the potentiometer through the coupler. The accumulated error caused by excessive testing transmission links is reduced, the measurement precision requirement is met, and the assembly/disassembly is simple.

Description

Hoisting type pedal assembly angular displacement testing device and testing method

Technical Field

The invention belongs to the technical field of cockpit testing, and particularly relates to a device and a method for testing angular displacement of a hoisting type pedal assembly.

Background

The pedal assembly has functions of controlling a rudder of an airplane and turning and braking on the ground, is vital to performance and safety of the airplane, influences control and comfort of a pilot by force sense and angular displacement of the pedal assembly, and is required to be an angular displacement device for measuring the rotation angle of the pedal assembly in order to measure a rod force/rod displacement curve of the pedal assembly and verify whether the function and the performance of a yaw control channel meet requirements or not.

To hoist and mount formula pedal subassembly, test space often is limited, and traditional anchor clamps are difficult to the centre gripping around pedal subassembly, if testing arrangement part is too much, can cause the accumulative error too big, and test data is inaccurate to other part surfaces are damaged easily during the centre gripping.

Disclosure of Invention

The purpose of the invention is: the hoisting type pedal assembly angular displacement testing device and the testing method overcome the defect of insufficient testing accuracy in the prior art, reduce excessive accumulated errors in a testing transmission link, meet the requirement of a measuring accuracy device, and are simple to mount/dismount.

The technical scheme of the invention is as follows: a hoisting type pedal assembly angular displacement testing device is specially used for the following hoisting type pedal assembly and comprises a pair of side plates which are symmetrically and fixedly arranged on an airplane body, a fixed shaft is fixedly arranged between the side plates, a pair of upright posts are rotatably arranged on the fixed shaft, and the lower end parts of the upright posts are provided with lug plates with shaft holes;

this angle displacement testing arrangement adopts runing rest, potentiometre, shaft coupling and support, the potentiometre is installed on the support, and the support mounting is on the aircraft organism, the runing rest is whole to be "U" type structure, and the runing rest inboard armlet body has the fork mouth structure, this fork mouth structure with fixed axle clearance fit, and with the surface laminating of the outside auricle of stand, the bow press from both sides with fixed axle clearance fit, and with the laminating of the internal surface of the outside auricle of stand, thereby through with fork mouth structure and bow press from both sides tight connection with the stand rotates in step, the runing rest outside armlet body pass through the shaft coupling with the potentiometre is connected.

Advantageously, the arcuate clip has a thin felt at the portion that conforms to the inner surface of the outboard tab of the post; the part of the fork structure, which is attached to the outer surface of the outer lug of the upright post, is provided with a thin felt.

Advantageously, the jaw structure and the arcuate clamp are connected and clamped through a hexagon head screw, a flat washer and a hexagon head nut.

Advantageously, the null-electric position is adjusted by rotating the housing of the potentiometer, and after the null-electric position is determined, the coupling, the potentiometer and the rotating bracket are fixedly connected through the set screw.

Advantageously, the potentiometer is fixedly connected to the support by means of a pressure piece and a set screw.

Advantageously, concentricity errors of the rotating support and the potentiometer are compensated for by the coupling.

Advantageously, the fixing bracket is connected to the i-shaped structural beam of the aircraft by means of bolts.

The invention also provides a method for testing the angular displacement of the hoisting pedal assembly, the testing device is utilized to operate the pedal assembly during testing, and the upright post of the pedal assembly rotates around the fixed shaft back and forth and drives the arch clamp, the rotating bracket, the coupler and the potentiometer to synchronously rotate; the potentiometer converts the mechanical rotation of the pedal into an electric signal and transmits the electric signal to the computer, and the computer acquires a curve generated by the signal to obtain a rotation angle value of the pedal assembly.

The invention has the advantages that: the hoisting type pedal assembly angular displacement testing device and the testing method reduce accumulated errors caused by excessive testing transmission links, meet the requirement of measuring precision and are simple to mount/dismount.

Drawings

FIG. 1 is a schematic view of the angular displacement testing apparatus of the present invention in a suspended foot pedal assembly;

FIG. 2 is a left side partial enlarged view of FIG. 1;

FIG. 3 is a schematic view of the attachment of the clamp to the rotating bracket;

fig. 4 is a schematic view showing the coincidence of the center lines of the rotating bracket and the upright post.

Detailed Description

The present invention is described in further detail below. Referring to fig. 1-4, a hoisting type angular displacement testing device for pedal assembly, wherein a deep groove ball bearing 3 is arranged in a bearing hole of an upright post 2 of the pedal assembly, the upright post 2 (with the deep groove ball bearing 3) is arranged on a fixed shaft 1, the fixed shaft 1 is fixedly connected with a fixed seat 5 through a taper bolt assembly 13 (consisting of a taper bolt, a flat washer, a hexagon slotted nut and a cotter pin), the fixed seat 5 is fixedly connected with a side plate 7 through a hexagon bolt assembly 14 (consisting of a hexagon bolt, a flat washer, a hexagon slotted nut and a cotter pin), an arch clamp 4 (with thin felt on the inner side) is fixedly connected with a rotating bracket 6 (with thin felt on the inner side) through a hexagon head screw 14 (consisting of a hexagon head screw, a flat washer and a hexagon head nut), the rotating bracket 6 is connected with a coupler 9 through a set screw, a potentiometer 8 is connected with a pressing block 11, Set screw 12 and support 10 fixed connection, shaft coupling 9 and potentiometer 8 are connected through set screw, compensate the error of runing rest 6 and the concentricity of potentiometer 8 through shaft coupling 9, with fixed bolster 10 be connected with aircraft I-shaped structure roof beam through the bolt, adjust electric zero position through rotatory potentiometer 8 casing, after the electric zero position of potentiometer 8 is confirmed, link firmly shaft coupling 9 with potentiometer 8 and runing rest 6 through set screw.

When the invention is used for testing the angular displacement, the connection of the arch clamp 4 and the rotating bracket 6 ensures that the center lines of the rotating bracket 6 and the upright post 2 are superposed; when pedal assembly's stand 2 around fixed axle 1 front and back rotary motion, drive bow-shaped clamp 4, runing rest 6, shaft coupling 9 and potentiometer 8 synchronous revolution, potentiometer 8 converts pedal mechanical rotation into the signal of telecommunication, carries the computer, gathers the curve that the signal generated through the computer, reachs pedal assembly's rotation angle value, and shaft coupling 9 can compensate runing rest 6 and potentiometer 8 axiality error, and measurement accuracy is accurate.

Claims

1. The utility model provides a hoist and mount formula pedal subassembly angular displacement testing arrangement which characterized in that: the angular displacement testing device is specially used for the following hoisting type pedal assembly, and comprises a pair of side plates (7) which are symmetrically and fixedly arranged on an airplane body, a fixed shaft (1) is fixedly arranged between the side plates (7), a pair of upright posts (2) are rotatably arranged on the fixed shaft (1), and the lower end parts of the upright posts (2) are provided with lug plates with shaft holes;

this angle displacement testing arrangement adopts runing rest (6), potentiometre (8), shaft coupling (9) and support (10), install on support (10) potentiometre (8), and install on the aircraft organism support (10), runing rest (6) wholly is "U" type structure, and runing rest (6) inboard arm body has the fork mouth structure, this fork mouth structure with fixed axle (1) clearance fit, and with the surface laminating of the outside auricle of stand (2), bow clamp (4) with fixed axle (1) clearance fit, and with the internal surface laminating of the outside auricle of stand (2), thereby through with fork mouth structure and bow clamp (4) clamping connection with stand (2) synchronous rotation, runing rest (6) outside arm body pass through shaft coupling (9) with potentiometre (8) are connected.

2. The hoisted pedal assembly angular displacement testing device of claim 1, wherein: the bow-shaped clamp (4) is provided with a thin felt at the part attached to the inner surface of the outer lug of the upright post (2); the part of the fork structure, which is attached to the outer surface of the outer lug of the upright post (2), is provided with a thin felt.

3. The hoisted pedal assembly angular displacement testing device of claim 1, wherein: the fork structure and the arch-shaped clamp (4) are connected and clamped tightly through a hexagon head screw (14), a flat washer and a hexagon head nut.

4. The hoisted pedal assembly angular displacement testing device of claim 1, wherein: adjust the electric zero position through the casing of rotatory potentiometre (8), confirm the electric zero position after, link firmly shaft coupling (9), potentiometre (8) and runing rest (6) through holding screw.

5. The hoisted pedal assembly angular displacement testing device of claim 1, wherein: the potentiometer (8) is fixedly connected with the bracket (10) through a pressing block (11) and a set screw (12).

6. The hoisted pedal assembly angular displacement testing device of claim 1, wherein: the concentricity error of the rotating bracket (6) and the potentiometer (8) is compensated through a coupler (9).

7. The hoisted pedal assembly angular displacement testing device of claim 1, wherein: the fixed support (10) is connected with an I-shaped structural beam of the airplane through a bolt.

8. A method of testing angular displacement of a suspended pedal assembly using a test device as claimed in any one of claims 1 to 7, wherein: when in test, the pedal assembly is operated, the upright post (2) of the pedal assembly rotates around the fixed shaft (1) back and forth, and simultaneously drives the arch clamp (4), the rotating bracket (6), the coupler (9) and the potentiometer (8) to rotate synchronously; the potentiometer (8) converts the mechanical rotation of the pedal into an electric signal and transmits the electric signal to the computer, and the computer acquires a curve generated by the signal to obtain a rotation angle value of the pedal assembly.