CN213768994U

CN213768994U - Mounting backing plate of sensor

Info

Publication number: CN213768994U
Application number: CN202022809179.9U
Authority: CN
Inventors: 袁文铎; 严子焜; 田海玲; 赵克良; 周贵荣
Original assignee: Comac Shanghai Aircraft Design & Research Institute; Commercial Aircraft Corp of China Ltd
Current assignee: Comac Shanghai Aircraft Design & Research Institute; Commercial Aircraft Corp of China Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-23
Anticipated expiration: 2030-11-27

Abstract

The utility model relates to an installation backing plate of sensor. This installation backing plate includes: the first base plate comprises a first central through hole and first mounting holes circumferentially arranged around the first central through hole; the second cushion plate comprises a second central through hole and second mounting holes circumferentially arranged around the second central through hole, wherein the circumferential size of the first mounting hole is larger than that of the second mounting hole; the positioning structure is used for positioning the relative positions of the first base plate and the second base plate; the distance between the center of the first mounting hole and the center of the first central through hole is equal to the distance between the center of the second mounting hole and the center of the second central through hole. Through this installation backing plate, only need rely on the location structure on the first backing plate of this angle adjustable installation backing plate's equivalent frock reposition of redundant personnel, can realize the change of sensor probe installation angle. The mounting mat need not be reworked or scrapped, saving manufacturing, labor and time costs.

Description

Mounting backing plate of sensor

Technical Field

The utility model belongs to sensor installation field relates to a mounting pad of sensor to more specifically relate to a mounting pad of combination formula with adjustable angle for sensor installation.

Background

Installation of sensors or probes, such as pitot tubes, total temperature sensors, angle of attack sensors, whether main, branch or general purpose, relies on mounting pads. The sensor is positioned by positioning the mounting base plate. The present sensor mounting is in the form of a single pad and the inventors have not found that aircraft such as airline operated aircraft employ a combination pad.

Currently, for the installation angle adjustment of the sensor on the aircraft, the installation strategy/scheme adopted is to repair the backing plate or remake the backing plate, so as to realize the angle adjustment. This installation strategy can result in increased costs in manufacturing, labor, and time. For example, in utility model CN 208947638U filed by the present applicant on 8/2, 2018, the entire content of which is incorporated herein by reference, a solution is presented to use a tool to improve the accuracy of the probe (pitot tube) mounting angle. This scheme is through installing positioner supplementary installation airspeed tube to improve the precision of airspeed tube installation. However, when the mounting device determines the mounting angle, if the angular position needs to be changed, the tie plate still needs to be repaired or remade.

Accordingly, there is a need for a mounting mat for a sensor that facilitates installation assistance, is easy to manufacture, and reduces labor and practical costs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a mounting pad board of combination formula with adjustable an angle for sensor installation to the realization need not the part and scrapps or redesign when needing adjustment sensor installation angle, saves manufacturing, manual work and time cost.

According to an aspect of the utility model, a mounting backing plate is provided, this mounting backing plate includes: the first base plate comprises a first central through hole and first mounting holes circumferentially arranged around the first central through hole; the second cushion plate comprises a second central through hole and second mounting holes circumferentially arranged around the second central through hole, wherein the circumferential size of the first mounting hole is larger than that of the second mounting hole; the positioning structure is used for positioning the relative positions of the first base plate and the second base plate; the distance between the center of the first mounting hole and the center of the first central through hole is equal to the distance between the center of the second mounting hole and the center of the second central through hole.

By means of the above-described modular construction of the mounting mat, the second mat can be displaced, in particular angularly, relative to the first mat and repositioned. Thus, if the installation angle of a certain sensor/probe is not reasonable and needs to be adjusted during the test flight of the aircraft, the change of the installation angle of the sensor/probe can be realized only by repositioning the positioning structure on the first base plate by means of the equivalent tooling of the installation base plate with the adjustable angle. The mounting mat need not be remaked or scrapped, thereby facilitating installation and saving manufacturing, labor and time costs.

According to the above aspect of the present invention, the circumferential dimension of the first shim plate may be greater than the circumferential dimension of the second shim plate, and the circumferential positioning structure includes a concave portion provided at the center of the first shim plate, the shape of the concave portion corresponding to the shape of the periphery of the second shim plate, thereby achieving the circumferential positioning therebetween with the aid of the shape fit between the first shim plate and the second shim plate.

According to the above aspect of the present invention, in order that the mounting mat does not protrude from the fuselage surface when mounted to the outside of the fuselage of the aircraft, the depth of the concave portion may be greater than the thickness of the second mat. And preferably, the depth of the concave part can be equal to the sum of the thickness of the second base plate and the thickness of the base of the sensor, so that after the installation of the installation base plate and the sensor is completed, the surface of the aircraft body is kept flat, the subsequent painting operation and the like are facilitated, and the flight resistance is reduced to the maximum extent.

According to the above aspect of the present invention, the mounting base plate may include a positioning hole provided on one of the first base plate and the second base plate, and a positioning pin provided on the other of the first base plate and the second base plate to cooperate with the positioning hole. Thus, the first base plate is positioned relative to the second base plate through the matching between the positioning holes and the positioning pins. And, when the installation angle needs to be adjusted, only need to make the locating hole again can for installation cost has been reduced.

According to the above aspect of the present invention, preferably, the first mounting holes may be symmetrically arranged around the first central through hole, and the second mounting holes may be symmetrically arranged around the second central through hole. Thus, on the one hand, the machining of the mounting mat is made easier, and on the other hand, no particular angular alignment is required during mounting, which makes the mounting operation easier.

According to the above aspect of the present invention, preferably, the first mounting hole may be oblong around the first center through hole, and the second mounting hole may be circular. In this way, by enabling angular position adjustment of the circular second mounting hole relative to the oblong first mounting hole, the need to re-drill the mounting hole in the first shim plate is eliminated, thereby further reducing installation costs/time.

According to the above aspect of the present invention, preferably, in order to make the relative movement between the first shim plate and the second shim plate be more restricted after the installation, the radial width of the first mounting hole may be equal to the diameter of the second mounting hole.

According to the above aspect of the present invention, in order to further facilitate the manufacture and the installation, preferably, the first pad and the second pad may be disc-shaped.

From this, through the utility model discloses an installation backing plate has realized anticipated purpose, when realizing sensor installation angular adjustment, does not need remake or scrap the installation backing plate to easily supplementary installation, and saved manufacturing, manual work and time cost.

Drawings

For further explanation of the mounting mat according to the invention, the invention will be explained in detail below with reference to the drawings and the detailed description, in which:

FIG. 1 is an illustrative schematic view of a mounting mat according to the prior art, in which a sensor to be mounted is shown;

fig. 2 is an illustrative perspective view of an assembled mounting mat according to a non-limiting embodiment of the present invention;

FIG. 3 is a schematic top view of the mounting mat shown in FIG. 2;

FIG. 4 is a schematic bottom view of the mounting mat shown in FIG. 2;

FIG. 5 is an illustrative perspective view of a first shim plate of a non-limiting embodiment of the present invention from one angle;

FIG. 6 is an illustrative perspective view of the first pad of a non-limiting embodiment of the invention from another angle;

FIG. 7 is a schematic top view of the first shim plate shown in FIG. 6;

FIG. 8 is a schematic bottom view of the first shim plate shown in FIG. 6;

fig. 9 is an illustrative perspective view of a second shim plate of a non-limiting embodiment of the present invention from one angle;

fig. 10 is an illustrative perspective view of a second shim plate of a non-limiting embodiment of the present invention, viewed from another angle;

FIG. 11 is a schematic top view of the second shim plate shown in FIG. 10; and

fig. 12 is a schematic bottom view of the second shim plate shown in fig. 10.

Detailed Description

It is to be understood that the invention may assume various alternative orientations and step sequences, except where expressly specified to the contrary. It is also to be understood that the specific devices illustrated in the attached drawings, and described in the specification are simply exemplary embodiments of the inventive concepts disclosed and defined herein. Thus, specific orders, directions, or other physical characteristics relating to the various embodiments disclosed should not be considered as limiting, unless expressly stated otherwise.

The mounting mat 100 according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2 is an illustrative perspective view of an assembled mounting mat 100 according to a non-limiting embodiment of the present invention. As shown, the mounting plate 100 is a combination including a first plate 10 and a second plate 20 having a generally circular disk shape. The mounting mat 100 is formed by fitting the second mat 20 into the recess of the first mat 10.

In this embodiment, the first mat 10 may also be referred to as a fixed mat, and the second mat 20 may also be referred to as an adjustable mat, without limiting the scope of the invention. And it should be understood that although the first and

second pads

10, 20 are shown in this embodiment as being each generally disc-shaped, other shapes are possible, such as, but not limited to, the first pad 10 being square and the second pad 20 being circular or triangular. Also, although in the illustrated embodiment the second shim plate 20 fits into the recess of the first shim plate 10, the first shim plate may alternatively be without a recess, i.e. may only have substantially flat opposing end surfaces.

Fig. 3 and 4 are schematic top and bottom views, respectively, of the mounting mat 100 shown in fig. 2. As shown, the first shim plate 10 includes a first central through hole 11, 6 first mounting holes 12 arranged circumferentially symmetrically around the first central through hole 11, and positioning holes 13. The second shim plate 20 includes a second central through hole 21 and 6 second mounting holes 22 arranged circumferentially symmetrically around the second central through hole 21. The circumferential dimension of the first mounting hole 12 is greater than the circumferential dimension of the second mounting hole 22. As used herein, the circumferential dimension is the dimension in the circumferential direction around the central through

hole

11, 21. The circumferential dimension of the first mounting hole 12 is greater than the circumferential dimension of the second mounting hole 22, it being understood that the arc between the two end points of the single first mounting hole 12 having the greatest spacing in the circumferential direction is greater than the arc between the two end points of the single second mounting hole 22 having the greatest spacing in the circumferential direction. As a non-limiting example, the angle between the above-mentioned two end points of the first mounting hole 12 may be 40 ° with respect to the center of the second center through hole 21, for example. This leaves a predetermined angular adjustment space of, for example, +/-20 deg. while the first shim plate 10 allows the center point of the sensor 200 to be positioned (in this case, the second mounting hole 22 is predetermined to be positioned with respect to the circumferential center position of the first mounting hole 12). In alternative embodiments, the above-described angle may be 30 or 50, with a spatial distribution of angular adjustment of +/-15 or +/-25, although other angular ranges may be contemplated by one of ordinary skill in the art.

As shown in fig. 4, the first mounting hole 12 may be oblong around the first central through hole 11, and the second mounting hole 22 may be circular. In this case, in a preferred embodiment, the radial width of the first mounting hole 12, i.e., the width measured in the direction from the first central through hole 11 toward the peripheral edge of the first shim plate 10, may be equal to the diameter of the second mounting hole 22. However, in alternative embodiments, other shapes are possible, for example, the first central through hole 11 may instead be a long straight shape with two ends that are not semi-circular, and the second mounting hole 22 may be square. Preferably, the distance between the center of the first mounting hole 12 and the center of the first central through hole 11 is equal to the distance between the center of the second mounting hole 22 and the center of the second central through hole 21. In this way, when the first shim plate 10 and the second shim plate 20 of the mounting shim plate are assembled together as shown in fig. 2-4, the second mounting hole 22 coincides with at least a part of the first mounting hole 12 in the circumferential direction around the central through

hole

11, 12, and the second mounting hole 22 coincides with at least another part of the first mounting hole 12 in the circumferential direction when the second shim plate 20 is rotated around the first shim plate 10 with respect to the central through

hole

11, 12. Sensor 200 is then attached to mounting mat 100, and thus to the aircraft, using attachment structures such as threaded fastener instructions, thereby enabling an adjustable angular range for the mating installation of sensor 200.

It should be understood that although the first and second mounting holes 12, 22 are shown as being symmetrically arranged around the central through

holes

11, 12 in this embodiment, other arrangements are possible, and although the number of the first and second mounting holes 12, 22 in this embodiment is 6, respectively, one of ordinary skill in the art may select other numbers of the first and second mounting holes 12, 22 depending on the actual situation. In addition, although the central through

holes

11 and 21 are shown in the present embodiment as being circular, the central through

holes

11 and 21 may be square or polygonal in alternative embodiments.

Fig. 5-6 are illustrative perspective views of the first mat 10 of a non-limiting embodiment of the present invention viewed from different angles, and fig. 7-8 are schematic top and bottom views of the first mat 10 shown in fig. 6. As shown in the drawing, the first pad 10 includes a substantially circular recess 14 provided at the center of the first pad 10, and the shape of the recess 14 corresponds to the shape of the peripheral edge of the disc-shaped second pad 20. As described above, it should be understood that the recess 14 may be formed in other shapes as long as it corresponds to the shape of the second pad 20. The positioning holes 13 are formed outside the first mounting hole 12, one positioning hole 13 being shown in the figures, but it should be understood that other numbers of positioning holes 13 are possible and, in the preferred embodiment, include at least two positioning holes 13 oppositely disposed about the first central through hole 11.

Fig. 9-10 are illustrative perspective views of the second mat 20 of a non-limiting embodiment of the present invention viewed from different angles, and fig. 11-12 are schematic top and bottom views of the second mat 20 shown in fig. 10. As shown in the drawing, the second shim plate 20 includes a second center through hole 21 and 6 second mounting holes 22 circumferentially symmetrically arranged around the second center through hole 12, and further includes a positioning pin 23 formed outside the second mounting holes 22, the positioning pin 23 being capable of fitting into the positioning hole 13, thereby enabling circumferential and radial positioning of the first shim plate 10 with respect to the second shim plate 20.

Also, it should be understood that while one locating pin 23 is shown in the drawings, other numbers of locating pins 23 are possible and, in the preferred embodiment, include at least two locating pins 23 oppositely disposed about the second central through hole 12. In addition, although the positioning pins 23 are shown in the drawings as being provided on the second shim plate 20, the positioning pins 23 may instead be provided on the first shim plate 10, in which case the second shim plate 20 is correspondingly provided with positioning holes 13 that cooperate with the positioning pins 23.

Referring back to fig. 2, as shown, the depth of the recess 14 is greater than the thickness of the second backing plate 20. And preferably, the depth of the recess 14 is equal to the sum of the thickness of the second pad 20 and the thickness of the base 201 of the sensor 200. As used herein, the depth of the recess 14 refers to a distance extending toward the first shim plate 10 in a direction perpendicular to the end surface of the first shim plate 10, and the thickness of the second shim plate 20 refers to a distance between two opposite end surfaces in a direction perpendicular to the end surface of the second shim plate 20. In this way, when the sensor (probe) 200 is mounted to the fuselage of an aircraft by means of the mounting mat 100, the base 201 of the sensor 200 is not allowed to protrude from the fuselage surface of the aircraft, thereby ensuring structural smoothness and minimizing wind resistance.

According to the presently preferred embodiment of the present invention, the material of the first shim plate 10 and the second shim plate 20 may comprise a metal such as an aluminum alloy or a polymer material such as nylon. And may be made using any manufacturing process known in the art, such as molding, pressing, machining, or the like.

As used herein, the terms "first" or "second", etc., used to denote order are only used to enable those skilled in the art to better understand the concept of the present invention illustrated in the preferred embodiments, and are not used to limit the present invention. Unless otherwise specified, all sequences, orientations, or orientations are used for the purpose of distinguishing one element/component/structure from another element/component/structure only, and do not imply any particular sequence, order of installation, direction, or orientation, unless otherwise specified. For example, in an alternative embodiment, "first mat" may be used to represent "second mat".

The non-limiting installation step of the mounting mat 100 according to the present invention on an aircraft is described in detail below with reference to the accompanying drawings.

a) First installation scenario

The first installation scenario may correspond to a scenario when the sensor or probe 200 is initially assembled, and may include, for example, the steps of:

1) mounting the first base plate 10: in the same way as currently used, namely positioning and mounting on the fixture when the aircraft head is partially erected.

Note: at this time, the positioning hole 13 of the first pad 10 is not opened.

2) Positioning holes 13 of the first shim plate 10: using the equivalent tooling of the second backing plate 20 (for example, similar to the mounting and positioning device in the utility model CN 208947638U mentioned in the background of the present application), the positioning hole 13 is opened when the mounting angle meets the expected requirement on the premise of ensuring the coaxial matching of the equivalent tooling of the first backing plate 10 and the second backing plate 20. As schematically shown in fig. 2-4. It should be noted that the drawings are only schematic, and in actual use, the number of the positioning holes 13 is preferably 2.

3) The second pad 20 is installed: the mounting of the second shim plate 20 is completed depending on the positioning hole 13.

4) The sensor 200 is installed: the installation of the sensor 200 is completed according to the first and second installation holes 12 and 22.

b) Second installation scenario

The second installation scenario may correspond to a scenario when the installation angle of the sensor or probe 200 relative to the aircraft needs to be adjusted, and may for example comprise the steps of:

1) the first pad 10 is installed: and kept still.

2) Positioning holes 13 of the first shim plate 10: the original hole-opened positioning hole 13 is plugged, and the positioning hole 13 is opened according to the new installation angle requirement by using an equivalent tool of the second base plate 20 (for example, similar to the installation positioning device in the utility model CN 208947638U mentioned in the background of the application).

3) The second pad 20 is installed: the installation of the second shim plate 20 is completed depending on the new positioning hole 13.

In summary, the combined mounting mat 100 including the first mat 10 and the second mat 20 according to the embodiment of the present invention overcomes the disadvantages of the prior art and achieves the intended purpose. For example, in use, the first pad 10 may be used primarily to achieve center point positioning of the sensor 200 while reserving an angle adjustment space (e.g., +/-20 °) and a positioning hole 13 for positioning the second pad 20; the second pad 20 may be mainly used to perform a mounting angle adjusting function of the sensor 200. The two

backing plates

10 and 20 are coaxially matched through the positioning pin 23 and the positioning hole 13, and the installation angle of the sensor 200 is adjusted and fixed through the position of the positioning hole 13.

The advantages that the mounting mat 100 according to the embodiments of the present invention has may include the following: if a certain sensor is found to be unreasonable in installation angle in test flight, adjustment is needed. The change of the installation angle of the sensor can be realized only by depending on the equivalent tool of the second base plate to reposition the positioning hole on the first base plate, the first base plate does not need to be remade or scrapped, and the manufacturing, labor and time cost are saved.

While the mounting mat of the present invention has been described above in connection with preferred embodiments, it will be appreciated by those of ordinary skill in the art that the above examples are intended to be illustrative only and are not intended to be limiting. Therefore, various modifications and changes can be made to the present invention within the spirit and scope of the claims, and these modifications and changes will fall within the scope of the claims of the present invention.

Claims

1. A mounting mat (100) for a sensor, characterized in that the mounting mat comprises:

a first shim plate (10), the first shim plate (10) comprising a first central through hole (11) and a first mounting hole (12) arranged circumferentially around the first central through hole;

a second shim plate (20), the second shim plate (20) comprising a second central through hole (21) and a second mounting hole (22) arranged circumferentially around the second central through hole, wherein the circumferential dimension of the first mounting hole (12) is larger than the circumferential dimension of the second mounting hole (22); and

a positioning structure for positioning the relative position of the first mat (10) and the second mat (20);

wherein the distance between the center of the first mounting hole (12) and the center of the first central through hole (11) is equal to the distance between the center of the second mounting hole (22) and the center of the second central through hole (21).

2. The sensor mounting mat (100) according to claim 1, wherein the circumferential dimension of the first mat (10) is larger than the circumferential dimension of the second mat (20), and wherein the circumferential positioning structure comprises a recess (14) arranged in the center of the first mat (10), the shape of the recess (14) corresponding to the shape of the periphery of the second mat (20).

3. The mounting mat (100) of a sensor according to claim 2, characterized in that the depth of the recess (14) is larger than the thickness of the second mat (20).

4. The mounting mat (100) for a sensor according to claim 3, characterized in that the depth of the recess (14) is equal to the sum of the thickness of the second mat (20) and the thickness of the base (201) of the sensor (200).

5. The mounting pad (100) of a sensor according to claim 1, characterized in that it comprises a positioning hole (13) provided on one of the first and second pads, and a positioning pin (23) cooperating with the positioning hole provided on the other of the first and second pads.

6. The mounting mat (100) of a sensor according to claim 1, characterized in that the first mounting holes (12) are symmetrically arranged around the first central through hole (11) and the second mounting holes (22) are symmetrically arranged around the second central through hole (21).

7. The mounting mat (100) of a sensor according to claim 1, characterized in that the first mounting hole (12) is oblong around the first central through hole (11) and the second mounting hole (22) is circular.

8. The mounting mat (100) of a sensor according to claim 7, characterized in that the radial width of the first mounting hole (12) is equal to the diameter of the second mounting hole (22).

9. The mounting pad (100) of a sensor according to any of claims 1-8, characterized in that the first pad (10) and the second pad (20) are disc-shaped.

10. The mounting mat (100) for a sensor according to any of the claims 1-8, wherein the material of the first mat (10) and the second mat (20) is an aluminium alloy or nylon.