Aircraft control switch gap measurement fixture
By designing a bolt-sliding fixing device, the problems of non-mutual reference of aircraft pneumatic control switch measurement results and clamping difficulties were solved, enabling rapid and accurate gap measurement and parameter adjustment, thus improving measurement accuracy and adjustment efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN CHANGFENG IND CORP
- Filing Date
- 2025-05-29
- Publication Date
- 2026-06-23
AI Technical Summary
The lack of dedicated fixed measuring devices in the existing technology makes it impossible to cross-reference the measurement results of the gap of the aircraft's air pressure control switch. Furthermore, it is difficult to clamp and fix irregular parts of a certain type of aircraft, making it difficult to accurately measure and adjust them after inflation.
A special bolt-sliding fixing device was designed, including a gauge holder, gauge clamp small bolts, gauge clamp large bolts, column, base plate, pad bolts, vertical plate, pressure plate, hand-tightening bolts, threaded column and threaded pressure plate. Through the combined use of these components, the pneumatic control switch can be quickly and accurately fixed and measured.
It enables rapid and accurate fixing and parameter adjustment of aircraft barometric pressure control switches, improves measurement accuracy and adjustment efficiency, avoids inaccurate measurements and equipment damage, and ensures the overall thermal protection efficiency of the equipment.
Smart Images
Figure CN224398556U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aviation maintenance technology and relates to a fixed device for measuring the gap of aircraft control switches. Background Technology
[0002] The pneumatic control switch of a certain type of aircraft requires an input of 2.35 MPa air pressure into the inlet connector. The clearance between the piston rod and the valve should be (0.2–1) mm. With the pneumatic control switch in the neutral position, the clearance between the plug and the piston rod should be (1–1.5) mm. Moving the rocker arm to the left limit position and placing it on the locking mechanism, then moving it to the right limit position, the measured stroke should be (10.8–12.5) mm. Clearance adjustment is required before use. Currently, existing technologies often rely on manual selection of general fixing methods and standard tools, as well as direct reading methods. Furthermore, the lack of a dedicated fixing and measuring device makes it impossible to cross-reference measurement results. In addition, the altimeter of this type of aircraft is an irregularly shaped part, making clamping and fixing difficult. After the bottom is filled with gas, it is also difficult to fix. Therefore, a dedicated pneumatic control switch fixing device needs to be designed for mechanical fixation to fill the parameter adjustment gap after the clearance of the pneumatic control switch of this type of aircraft is fixed. Utility Model Content
[0003] This utility model provides a gap measuring and fixing device for aircraft control switches. It is a special fixing device with bolt sliding, which can quickly, accurately and effectively measure the gap of a certain type of aircraft pneumatic control switch, fix and adjust the gap, mechanically fix the gap after adjustment, and accurately read the pneumatic control switch and conduct parameter tests.
[0004] The present invention adopts the following technical solution:
[0005] An aircraft control switch gap measuring and fixing device includes a gauge frame 1, a gauge clamp small bolt 2, a gauge clamp large bolt 3, a column 4, a base plate 5, a pad bolt 6, a vertical plate 7, a pressure plate 8, a hand-tightening bolt 9, a threaded column 10, and a threaded pressure plate 11.
[0006] The base plate 5 has multiple arc-shaped grooves and a slide rail, and foot bolts 6 are fixedly installed at the four corners of the bottom.
[0007] The vertical plate 7 is a vertical plate with a certain height. Its lower end is installed in the slide rail on the base plate 5. The upper part of the vertical plate 7 has a mounting groove for fixing and installing the pneumatic control switch. After installation, there is a sufficient distance between the lower end of the pneumatic control switch and the upper surface of the base plate 5 to facilitate the installation and removal of the air pipe. The upper end of the pneumatic control switch protrudes from the upper end of the vertical plate 7 to facilitate the measurement of the dial indicator.
[0008] The lower end of the threaded column 10 is movably fixed in one of the arc grooves on the base plate 5. The threaded pressure plate 11 is fixed on the upper part of the threaded column 10 and can be adjusted in height along the threaded column 10. The threaded pressure plate 11 extends above the pneumatic control switch, and its end has a threaded hole that cooperates with the hand-twisting bolt 9. By twisting the hand-twisting bolt 9, the protruding cylinder on the pneumatic control switch is screwed and fixed. After fixing, adjustment, testing and flight parameter reading are performed. The installation position of the threaded column 10 on the base plate 5 is determined according to the position of the protruding cylinder on the pneumatic control switch.
[0009] The pressure plate 8 is installed at the top of the measuring part of the pneumatic control switch, serving as the upper measuring surface.
[0010] The lower end of the column 4 is also movably fixed in one of the arc grooves on the base plate 5. One end of the gauge holder 1 is hand-screwed to the upper part of the column 4 by the gauge clamp bolt 3, and its height can be adjusted along the column 4. The other end of the gauge holder 1 is clamped and fixed with a dial indicator by the gauge clamp bolt 2, which is used to measure the stroke of the pressure plate 8, thereby realizing the coordinated measurement of the air pressure control switch. The installation position of the column 4 on the base plate 5 is determined according to the position of the pressure plate 8.
[0011] The beneficial effects of this utility model are as follows: This utility model has a simple and practical structure. Compared with the prior art, it has high speed, accuracy and safety. It can quickly fix the position of the pneumatic control switch of a certain machine, improve the adjustment efficiency, and avoid inaccurate measurement, unclear pneumatic control switch parameters, surface scratches, and affect the thermal protection efficiency of the overall equipment. It provides a strong guarantee for shortening the overall cycle. Attached Figure Description
[0012] Figure 1 This is a front view of the overall structure of this utility model.
[0013] Figure 2 This is a left view of the overall structure of this utility model.
[0014] Figure 3 This is a top view of the overall structure of this utility model.
[0015] Figure 4 The diagram shows the structure of the table frame, where (a) is the top view and (b) is the front view.
[0016] Figure 5 This is a structural diagram of the small bolt for the watch holder.
[0017] Figure 6 The diagram shows the column structure, where (a) is the front view and (b) is the AA section view.
[0018] Figure 7 The diagram shows the base plate structure, where (a) is the front view and (b) is the AA section view.
[0019] Figure 8 The diagram shows the structure of the pressure plate, where (a) is the front view and (b) is the side view.
[0020] Figure 9 The diagram shows the structure of the threaded pressure plate, where (a) is the top view and (b) is the front view.
[0021] Figure 10 This is a structural diagram of a hand-operated bolt.
[0022] The components include: 1. Table frame; 2. Table clamp small bolts; 3. Table clamp large bolts; 4. Column; 5. Base plate; 6. Foot bolts; 7. Vertical plate; 8. Pressure plate; 9. Hand-tight bolts; 10. Threaded column; and 11. Threaded pressure plate. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below.
[0024] A gap measuring and fixing device for aircraft control switches, comprising a gauge holder 1, a small gauge clamp bolt 2, a large gauge clamp bolt 3, a column 4, a base plate 5, a pad bolt 6, a vertical plate 7, a pressure plate 8, a hand-tightening bolt 9, a threaded column 10, and a threaded pressure plate 11. Figures 1 to 3 .
[0025] like Figure 7 The base plate 5 has five arc-shaped grooves (three horizontal and two vertical) and a vertically arranged slide rail. The three horizontal grooves are arranged side by side at equal intervals, with the middle horizontal groove located on the center line of the base plate 1. The two vertical grooves are arranged symmetrically and collinearly between the horizontal grooves and the slide rail. Foot bolts 6 are fixedly installed at the four corners of the bottom of the base plate 5.
[0026] The vertical plate 7 is a vertical plate with a certain height. Its lower end is installed in the slide rail on the base plate 5. The upper part of the vertical plate 7 has a mounting groove for fixing and installing the pneumatic control switch. After installation, the lower end of the pneumatic control switch is left with a sufficient distance from the upper surface of the base plate 5 to facilitate the installation and removal of the air pipe. The upper end of the pneumatic control switch protrudes from the upper end of the vertical plate 7 to facilitate the measurement of the dial indicator.
[0027] The lower end of the threaded column 10 is movably fixed in one of the arc-shaped grooves on the base plate 5, and the threaded pressure plate 11 (such as...) Figure 9 The threaded plate 11 is fixed to the upper part of the threaded column 10 and its height can be adjusted along the threaded column 10. The threaded pressure plate 11 extends above the pneumatic control switch, and its end has a threaded hole for connecting to the hand-tightening bolt 9 (e.g. Figure 10 In conjunction with the screw 9, the protruding cylinder on the pneumatic control switch is screwed and fixed. After fixing, the adjustment, testing and flight parameter reading are performed. The installation position of the threaded column 10 on the base plate 5 is determined according to the position of the protruding cylinder on the pneumatic control switch.
[0028] like Figure 8 The pressure plate 8 is installed at the top of the air pressure control switch measuring part, serving as the upper measuring surface.
[0029] The aforementioned column 4 (such as Figure 6 The lower end is also movable and fixed in one of the arc-shaped sliding grooves on the base plate 5, the table frame 1 (such as...) Figure 4 One end of the meter holder 1 is hand-screwed to the upper part of the column 4 using a large meter clamp bolt 3, and its height can be adjusted along the column 4. The other end of the meter holder 1 is secured to the upper part of the column 4 using a small meter clamp bolt 2 (e.g., ...). Figure 5 A dial indicator is clamped and fixed to measure the stroke of the pressure plate 8, thereby enabling the measurement of the pneumatic control switch. The installation position of the column 4 on the base plate 5 is determined according to the position of the pressure plate 8.
[0030] In use, install the pneumatic control switch on the vertical plate 7. According to the position of the protruding cylinder on the pneumatic control switch, install the threaded column 10 and column 4 on the base plate 5. Fix the protruding cylinder on the pneumatic control switch by hand-tightening the bolt 9. Install the pressure plate 8 at the top of the measuring part of the pneumatic control switch. At this time, the pressure plate 8 is located at the upper limit position of the pneumatic control switch. Install the dial indicator on the indicator frame 1. Adjust the height of the indicator frame 1 so that the dial indicator probe contacts the pressure plate 8 and returns to zero. Adjust the height of the indicator frame 1 by operating the large bolt 3 of the indicator clamp, push the pressure plate 8 to the required position, and read the dial indicator reading.
[0031] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. An aircraft control switch gap measurement fixture, comprising: The gap measuring and fixing device includes a frame (1), a column (4), a base plate (5), a vertical plate (7), a pressure plate (8), a hand-tightening bolt (9), a threaded column (10), and a threaded pressure plate (11); The vertical plate (7) is a vertical plate with a certain height. Its lower end is installed on the base plate (5). A pneumatic control switch is fixedly installed on the upper part of the vertical plate (7). After installation, the lower end of the pneumatic control switch is left with a sufficient distance from the upper surface of the base plate (5), and the upper end protrudes from the upper end of the vertical plate (7). The lower end of the threaded column (10) is fixed on the base plate (5), and the threaded pressure plate (11) is fixed on the upper part of the threaded column (10) and can be adjusted along the threaded column (10). The threaded pressure plate (11) extends above the pneumatic control switch, and its end cooperates with the hand screw (9) to screw and fix the protruding cylinder on the pneumatic control switch. The pressure plate (8) is installed at the top of the air pressure control switch measuring part as the upper measuring surface; The lower end of the column (4) is fixed on the base plate (5), one end of the meter holder (1) is fixed on the upper part of the column (4) and can be adjusted along the column (4) in height. The other end of the meter holder (1) is clamped and fixed with a dial indicator for measuring the stroke of the pressure plate (8).
2. An aircraft control switch gap measurement fixture according to claim 1, wherein, The bottom plate (5) is fixedly installed with pad bolts (6) at the four corners of the bottom.
3. The aircraft control switch gap measuring and fixing device according to claim 1, characterized in that, The base plate (5) is equipped with a slide rail, and the vertical plate (7) is installed inside the slide rail.
4. The aircraft control switch gap measuring and fixing device according to claim 1, characterized in that, Multiple arc-shaped grooves are made on the base plate (5), and the threaded column (10) and column (4) are movably installed in the arc-shaped grooves. The installation position is determined according to the position of the aircraft control switch.