Angle indicating instrument calibration test workpiece positioning and supporting device

Abstract

A positioning and supporting device for a calibration test workpiece of an angle indicating instrument is provided with a base, a mounting bracket and a leveling bolt, the base is of a disc structure with a downward opening, and a circular sleeve protruding in the vertical direction is arranged in the center of the base. The installation support is of a sleeve structure, the upper end face and the lower end face of the installation support are horizontal planes, the tested angle indicating instrument is sleeved with the installation support, the meter head is carried on the upper end face of the installation support, the lower end of the installation support is sleeved with the upward protruding portion of the circular sleeve of the base, and a cable penetrating groove is formed in the side wall of the lower portion of the installation support. The three sets of leveling bolts are installed on the base, located on the outer side of the installation support and evenly arranged in the circumferential direction of the base disc. The device is used for the calibration test of the aircraft plate position indicator, can enable the plate position indicator to be consistent with the installation condition of an aircraft body in the process of the infield calibration test, and achieves the purposes of guaranteeing the reliability of a test result and the safe flight of an aircraft.

Description

Technical Field

[0001] The utility model relates to the technical field of testing and measuring, in particular to a workpiece positioning and supporting device for calibration testing of an angle indicating instrument. Background Art

[0002] As attached Figures 1 to 3 As shown, the plate position indicator on the aircraft is an instrument indicating the angle information of the engine intake slant plate, namely, the angle indicator 1, which is installed in a vertical state on the aircraft. The upper end of the angle indicator 1 is provided with a meter head 1-1, and the lower end is provided with a pin-type connection terminal 1-2 connected to the signal processor wire. When the angle indicator 1 is calibrated and tested in the indoor field, in order to reliably connect the pin-type connection terminal 1-2 with the test equipment through the test cable socket, the angle indicator 1 can only be placed horizontally. However, since the internal mechanism of the angle indicator 1 is provided with fine parts such as hairsprings, different placement methods will lead to differences in the test results of various performance indicators. Therefore, the horizontal placement method is prone to inaccurate test results during indoor field testing, and there are indication errors after installation, which brings hidden dangers to the safe flight of the aircraft. Utility Model Content

[0003] The utility model provides a workpiece positioning support device for calibrating and testing an angle indicating instrument, which aims to simulate the installation method of the angle indicating instrument on an aircraft through the cooperation of a base, a mounting bracket and a leveling bolt, so that the installation condition of the angle indicating instrument is consistent with that of the aircraft body during an indoor test, thereby achieving the purpose of ensuring the reliability of the test result and the safe flight of the aircraft.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A positioning support device for a calibration test workpiece of an angle indicating instrument, comprising a base, a mounting bracket and leveling bolts; the base is a disk structure with an opening downward, and a circular sleeve protruding in both upper and lower directions is provided at the center of the base; the mounting bracket is a sleeve structure, and both upper and lower end surfaces thereof are horizontal planes; the angle indicating instrument to be tested is mounted in the mounting bracket, and the meter head is mounted on the upper end surface of the mounting bracket, and the lower end of the mounting bracket is mounted on the outside of the upwardly protruding part of the circular sleeve of the base, and a cable passing groove is provided on the lower side wall of the mounting bracket; the leveling bolts are in three groups, which are mounted on the base, located on the outer side of the mounting bracket, and evenly arranged along the circumference of the base disk.

[0006] The above-mentioned angle indicating instrument calibration test workpiece positioning support device is provided with a downwardly protruding leveling bolt mounting seat on the bottom surface of the base. The leveling bolt mounting seat is a circular boss structure, which is connected to the downwardly protruding part of the circular sleeve of the base and the outer edge of the base disc through radially arranged connecting ribs, and a threaded hole that cooperates with the leveling bolt is provided on the leveling bolt mounting seat.

[0007] The above-mentioned angle indicating instrument calibration test workpiece positioning support device has a support foot seat arranged at the bottom of the leveling bolt, and after the leveling bolt and the threaded hole on the base are assembled, the support foot seat and the leveling bolt are welded into one.

[0008] The above-mentioned angle indicating instrument calibration test workpiece positioning support device, the mounting bracket is a stepped sleeve structure, the lower outer diameter of which is smaller than the upper outer diameter, and the lower outer diameter is reduced to make room for the leveling bolt to avoid operation.

[0009] The utility model provides a workpiece positioning support device for calibration test of an angle indicating instrument, which is particularly suitable for calibration test of an angle indicating instrument (i.e., a plate position indicator) on an aircraft. The device can fix the workpiece to be tested through a mounting bracket of a sleeve structure, and level the mounting posture of the workpiece through a leveling bolt arranged on a base, thereby not only ensuring that the indoor test environment of the angle indicating instrument on the aircraft is basically consistent with the actual use environment on the aircraft, but also reducing the test error caused by different placement positions, improving the reliability of the indoor test result of the angle indicating instrument, but also improving the working efficiency of the calibration test of the angle indicating instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the angle indicating instrument structure on an aircraft;

[0011] Figure 2 yes Figure 1 K-direction view;

[0012] Figure 3 yes Figure 2 Schematic diagram of the AA section structure;

[0013] Figure 4 It is a schematic diagram of the structure of the utility model;

[0014] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 6 is a schematic diagram of the base structure;

[0016] Figure 7 Yes Figure 6 Schematic diagram of the structure after the middle base is flipped;

[0017] Figure 8 1. It is a schematic diagram of the mounting bracket structure;

[0018] Fig. 9 It is a schematic diagram of the working state of the utility model.

[0019] Explanation of the symbols in the figure:

[0020] 1 is the angle indicating instrument, 1-1 is the meter head, and 1-2 is the pin-type connection terminal;

[0021] 2 is the angle indicating instrument calibration test workpiece positioning support device

[0022] 2-1 is the base, 2-1-1 is the round sleeve, 2-1-2 is the threaded hole, 2-1-3 is the leveling bolt mounting seat, and 2-1-4 is the connecting rib;

[0023] 2-2 is the mounting bracket, 2-2-1 is the cable passage slot;

[0024] 2-3 is the leveling bolt, 2-3-1 is the supporting foot;

[0025] 3 for test cable

[0026] 4 is the test equipment. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] See Figure 1. Figure 2 , Figure 3 The board position indicator (i.e., angle indicator 1) on the aircraft is installed in a vertical state on the aircraft. The upper end of the angle indicator 1 is provided with a meter head 1-1, and the lower end is provided with a pin-type connection terminal 1-2 connected to the signal processor wire. In the prior art, when the angle indicator 1 is calibrated and tested in the indoor field, in order to reliably connect the pin-type connection terminal 1-2 with the test equipment through the test cable socket, the angle indicator 1 is placed horizontally. Since the internal mechanism of the angle indicator 1 is provided with fine parts such as hairsprings, different placement methods will lead to differences in the test results of various performance indicators. Therefore, the horizontal placement method is prone to inaccurate test results during indoor field testing, and there are indication errors after installation, which brings hidden dangers to the safe flight of the aircraft.

[0029] See also Figure 4 , Figure 5 , Figure 6In order to solve the problem of inaccurate test results of the horizontal placement method of the aircraft plate position indicator in the field test, the utility model provides an angle indicating instrument calibration test workpiece positioning support device 2, which is provided with a base 2-1, a mounting bracket 2-2 and a leveling bolt 2-3; the base 2-1 is a disk structure with an opening downward, and a circular sleeve 2-1-1 with upper and lower bidirectional protrusions is provided at the center of the base 2-1; the mounting bracket 2-2 is a sleeve structure, and both the upper and lower end surfaces are horizontal planes. The angle indicating instrument 1 workpiece to be tested is set in the mounting bracket 2-2, and its header 1 -1 part is mounted on the upper end surface of the mounting bracket 2-2, and the lower end of the mounting bracket 2-2 is sleeved on the outer side of the upwardly protruding part of the circular sleeve 2-1-1 of the base 2-1; the leveling bolts 2-3 are in three groups, which are installed on the base 2-1, located on the outer side of the mounting bracket 2-2, and evenly arranged along the circumference of the disk of the base 2-1. In each group of leveling bolts 2-3, a supporting foot 2-3-1 is set at the bottom of the leveling bolt. After the leveling bolts 2-3 are assembled with the threaded holes 2-1-2 on the base 2-1, the supporting foot 2-3-1 and the leveling bolts 2-3 are welded as a whole.

[0030] See also Figure 4 , Figure 6 , Figure 7 The angle indicating instrument calibration test workpiece positioning support device described in the utility model is provided with a downwardly protruding leveling bolt mounting seat 2-1-3 on the bottom surface of its base 2-1. The leveling bolt mounting seat 2-1-3 is a circular boss structure, which is connected to the downwardly protruding part of the circular sleeve 2-1-1 of the base 2-1 and the outer edge of the disc of the base 2-1 through radially arranged connecting ribs 2-1-4. A threaded hole 2-1-2 cooperating with the leveling bolt 2-3 is provided on the leveling bolt mounting seat 2-1-3.

[0031] See also Figure 4 , Figure 8 The angle indicating instrument calibration test workpiece positioning support device described in the utility model has a mounting bracket 2-2 of a stepped sleeve structure, and a cable passing groove 2-2-1 is provided on the lower side wall of the mounting bracket 2-2; the lower outer diameter of the mounting bracket 2-2 is smaller than the upper outer diameter, and the lower outer diameter is reduced to make room for the leveling bolt 2-3 to operate.

[0032] See also Fig. 9When the utility model is used to perform an inner calibration test on a board position indicator on an aircraft, the board position indicator (angle indicating instrument 1) to be tested is placed in the mounting bracket 2, and the header 1-1 is partially mounted on the upper end surface of the mounting bracket 2-2. After the pin-type connection terminal 1-2 of the board position indicator (angle indicating instrument 1) to be tested is plugged with one end of the test cable 3, the other end of the test cable 3 passes through the cable passing groove 2-2-1 at the bottom of the mounting bracket 2-2 and is connected to the socket of the test equipment 4; then the mounting bracket 2-2 is placed on the base 2-1, and the lower inner wall of the mounting bracket 2-2 is sleeved on the outer side of the upwardly protruding part of the circular sleeve 2-1-1 of the base 2-1, and the mounting bracket 2-2 and the board position indicator (angle indicating instrument 1) placed in the mounting bracket 2-2 are positioned through the base 2-1; then the leveling bolt 2-3 is adjusted according to the test requirements to ensure that the board position indicator (angle indicating instrument 1) workpiece to be tested is in a vertical state; after the workpiece is positioned and installed, it is calibrated and tested by the test equipment.

Claims

1. A workpiece positioning support device for calibrating and testing an angle indicating instrument, characterized in that: The angle indicating instrument calibration test workpiece positioning support device (2) is provided with a base (2-1), a mounting bracket (2-2) and a leveling bolt (2-3); the base (2-1) is a disk structure with an opening downward, and a circular sleeve (2-1-1) protruding in both upper and lower directions is provided at the center of the base (2-1); the mounting bracket (2-2) is a sleeve structure, and both the upper and lower end surfaces are horizontal planes. The angle indicating instrument (1) to be tested is mounted on the mounting bracket (2-2 ), the meter head (1-1) is mounted on the upper end surface of the mounting bracket (2-2), the lower end of the mounting bracket (2-2) is sleeved on the outer side of the upwardly protruding portion of the circular sleeve (2-1-1) of the base (2-1), and a cable passing groove (2-2-1) is provided on the lower side wall of the mounting bracket (2-2); the leveling bolts (2-3) are three groups in number, mounted on the base (2-1), located on the outer side of the mounting bracket (2-2), and evenly arranged along the circumference of the base (2-1) disk.

2. The angle indicating instrument calibration test workpiece positioning support device according to claim 1, characterized in that: A downwardly protruding leveling bolt mounting seat (2-1-3) is provided on the bottom surface of the base (2-1); the leveling bolt mounting seat (2-1-3) is a circular boss structure, connected to a downwardly protruding portion of a circular sleeve (2-1-1) of the base (2-1) and an outer edge of a circular disk of the base (2-1) via radially arranged connecting ribs (2-1-4); a threaded hole (2-1-2) matching the leveling bolt (2-3) is provided on the leveling bolt mounting seat (2-1-3).

3. The angle indicating instrument calibration test workpiece positioning support device according to claim 2, characterized in that: A supporting foot seat (2-3-1) is provided at the bottom of the leveling bolt (2-3); after the leveling bolt (2-3) and the threaded hole (2-1-2) on the base (2-1) are assembled, the supporting foot seat (2-3-1) and the leveling bolt (2-3) are welded together.

4. The angle indicating instrument calibration test workpiece positioning support device according to any one of claims 1 to 3, characterized in that: The mounting bracket (2-2) is a stepped sleeve structure, the outer diameter of the lower portion of which is smaller than the outer diameter of the upper portion, and the operating space is avoided for the leveling bolt (2-3) by reducing the outer diameter of the lower portion.

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