CN219511496U

CN219511496U - Multi-point-position step difference measuring device

Info

Publication number: CN219511496U
Application number: CN202320485468.9U
Authority: CN
Inventors: 陈笑慰; 刘妍; 李新亮; 郎君儒; 杨旭伟; 魏林
Original assignee: Shanghai Aircraft Manufacturing Co Ltd
Current assignee: Shanghai Aircraft Manufacturing Co Ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-11
Anticipated expiration: 2033-03-14

Abstract

The utility model belongs to the technical field of step difference measurement and discloses a multi-point step difference measuring device. The multi-point-position step measuring device comprises a shell and a plurality of displacement sensors, wherein the shell comprises a bottom plate, a positioning protrusion is arranged on the outer side face of the bottom plate and is used for propping against a first measured surface. The displacement sensors are arranged on the bottom plate, the displacement sensors are distributed around the positioning protrusions, the displacement sensors are perpendicular to the side faces, away from the bottom plate, of the positioning protrusions and can face the second measured surface, and the distance from the first measured surface to the second measured surface is measured. The multi-point-position step difference measuring device can measure the step values of a plurality of point positions at the same time, and greatly improves the step difference measuring efficiency.

Description

Multi-point-position step difference measuring device

Technical Field

The utility model relates to the technical field of step difference measurement, in particular to a multi-point step difference measuring device.

Background

The aircraft skin is provided with a static pressure sensor and an attack angle sensor, the static pressure sensor and the attack angle sensor are arranged through a mounting seat, the mounting seat is arranged on the skin and can be flush with the surface of the skin, but when the aircraft skin is arranged, a step difference exists between the mounting seat and the skin. Aiming at installation of the installation seats of the aircraft static pressure sensor and the attack angle sensor, the step differences between the installation seats and the skin of a plurality of points around the installation seats are required to be measured.

In the prior art, a depth measuring ruler is adopted to measure a plurality of times at a plurality of point positions, and data are recorded independently each time. The measuring tool is crude, the human influence is large, the measuring efficiency is low, and the measurement data recording is complicated.

Therefore, a multi-point level difference measuring device is needed to solve the above problems.

Disclosure of Invention

The utility model aims to provide a multi-point-position step difference measuring device which can measure the step difference values of a plurality of point positions at the same time, and greatly improves the measuring efficiency.

To achieve the purpose, the utility model adopts the following technical scheme:

a multi-point level difference measurement device, comprising:

the shell comprises a bottom plate, and a positioning protrusion is arranged on the outer side surface of the bottom plate and used for propping against a first measured surface;

the displacement sensors are arranged on the bottom plate, are distributed around the positioning protrusions, and are perpendicular to the side faces, away from the bottom plate, of the positioning protrusions so as to be capable of facing the second measured surface, and the distance from the first measured surface to the second measured surface is measured.

As an alternative, the bottom plate is provided with a plurality of measuring holes at the positions around the positioning protrusions, the displacement sensor is arranged in the housing, and the sensor probe of the displacement sensor can penetrate out of the measuring holes.

As an alternative, the displacement sensor is connected to the bottom plate through a connecting piece, one end of the connecting piece is provided with the displacement sensor, the other end of the connecting piece is connected to the bottom plate through a fastening piece, the fastening piece penetrates through the measuring hole to fix the connecting piece, the measuring hole is set to be a waist-shaped hole, and the fastening piece can move in the waist-shaped hole to adjust the positions of the connecting piece and the displacement sensor.

Alternatively, the bottom plate and the positioning protrusion are both circular, and the positioning protrusion and the bottom plate are concentrically arranged.

Alternatively, the waist-shaped holes are arranged along the radial extension of the bottom plate.

Alternatively, the plurality of displacement sensors are circularly arranged around the positioning protrusion and are uniformly spaced from each other.

As an alternative scheme, dodge the hole is provided with on the bottom plate, dodge the hole at least partial region in hole and be located the protruding department of location, so that the protrusion on the first measured surface can stretch into dodge in the hole.

As an alternative scheme, the casing still includes curb plate and roof, the both ends of curb plate are connected respectively the bottom plate with the bottom plate, the bottom plate the curb plate with the roof encloses to establish and forms accommodation space, displacement sensor holding in accommodation space.

As an alternative, a handle is arranged on the outer side surface of the top plate, and the multi-point level difference measuring device can be moved by gripping the handle.

As an alternative, a display screen is further arranged on the outer side surface of the top plate, and the display screen is in communication connection with the displacement sensor and is used for displaying the measurement result of the displacement sensor.

The beneficial effects are that:

before the multi-point level difference measuring device is used for level difference measurement, the multi-point level difference measuring device is placed at the flat position of the aircraft skin, so that the positioning protrusions are abutted against the aircraft skin, the sensor probes of the displacement sensors are adjusted to be abutted against the aircraft skin, and the multi-point level difference measuring device is zeroed. When the step measurement is carried out, the multi-point step measurement device is moved to attach the positioning bulge to the upper surface of the mounting seat, a plurality of displacement sensors around the positioning bulge are aligned to the aircraft skin, and the displacement sensors are started to test the distance from the aircraft skin, wherein the distance is equal to the step value from the upper surface of the mounting seat to the aircraft skin. The multi-point-position step difference measuring device can perform step difference test on a plurality of points around the mounting seat at one time, and the measuring efficiency is greatly improved.

Drawings

FIG. 1 is a schematic diagram of a multi-point level difference measuring device according to the present utility model under a single viewing angle;

FIG. 2 is a schematic diagram of a multi-point level difference measurement device according to the present utility model under another view angle;

fig. 3 is a schematic view showing an arrangement of the displacement sensor provided by the utility model on the bottom plate.

In the figure:

1. a housing; 11. a bottom plate; 111. measuring holes; 112. avoidance holes; 113. positioning the bulge; 12. a side plate; 13. a top plate; 2. a displacement sensor; 21. a sensor probe; 3. a connecting piece; 4. a handle; 5. and a display screen.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The static pressure sensor and the attack angle sensor are arranged on the aircraft skin, the static pressure sensor and the attack angle sensor are arranged through the mounting seat, the mounting seat is arranged on the aircraft skin, the mounting seat protrudes out of the surface of the skin, and a step difference is formed between the mounting seat and the skin. Aiming at installation of the installation seats of the aircraft static pressure sensor and the attack angle sensor, the step differences between the installation seats and the skin of a plurality of points around the installation seats are required to be measured.

In order to measure the level difference between the aircraft skin and the mounting seat at the same time in multiple points, as shown in fig. 1-3, the present embodiment provides a device for measuring the level difference in multiple points, where the device for measuring the level difference in multiple points includes a housing 1 and multiple displacement sensors 2, the housing 1 includes a bottom plate 11, a positioning protrusion 113 is disposed on an outer side surface of the bottom plate 11, and the positioning protrusion 113 is used to abut against a first measured surface (an upper surface of the mounting seat in the present embodiment). The plurality of displacement sensors 2 are disposed on the bottom plate 11, the plurality of displacement sensors 2 are distributed around the positioning protrusion 113, and a side surface of the positioning protrusion 113, which is away from the bottom plate 11, of the displacement sensor 2 is disposed vertically so as to be capable of facing the second surface to be measured (a surface of the aircraft skin in the embodiment), so as to measure a distance from the first surface to the second surface to be measured. The displacement sensor 2 may be a linear displacement sensor 2.

Before the step measurement, the multi-point step measuring device is placed at the flat position of the aircraft skin, so that the positioning protrusion 113 is abutted against the aircraft skin, and the sensor probes 21 of the plurality of displacement sensors 2 are adjusted to be abutted against the aircraft skin, so that the multi-point step measuring device is zeroed. When the step measurement is carried out, the multi-point step measurement device is moved to attach the positioning bulge 113 to the upper surface of the mounting seat, the plurality of displacement sensors 2 around the positioning bulge 113 are aligned to the aircraft skin, and the displacement sensors 2 are started to test the distance from the upper surface of the mounting seat to the aircraft skin, wherein the distance is equal to the step value from the upper surface of the mounting seat to the aircraft skin. The multi-point-position step difference measuring device can perform step difference test on a plurality of points around the mounting seat at one time, and the measuring efficiency is greatly improved.

In this embodiment, as shown in fig. 2, the displacement sensor 2 is provided with eight positions, and can perform step measurement on at least eight positions around the mounting seat at one time. When the number of the points to be detected is less than eight, the number of the activated displacement sensors 2 can be reduced, or the arrangement of the displacement sensors 2 can be reduced. Of course, more than eight displacement sensors 2 may be provided to further increase the measurement points, contributing to an improved measurement accuracy.

Further, as shown in fig. 1, the housing 1 further includes a side plate 12 and a top plate 13, two ends of the side plate 12 are respectively connected with the bottom plate 11 and the bottom plate 11, the side plate 12 and the top plate 13 enclose to form an accommodating space, and the displacement sensor 2 is accommodated in the accommodating space. Since the mounting seat is generally circular, a plurality of points around the mounting seat on the same circumference are generally subjected to step tests, the side plate 12 is annular, and the bottom plate 11 and the top plate 13 are correspondingly circular. Optionally, a handle 4 is disposed on the outer side surface of the top plate 13, and the handle 4 can move the multi-point level difference measuring device, so that the multi-point level difference measuring device can be conveniently moved.

Optionally, as shown in fig. 1, a display screen 5 is further disposed on an outer side surface of the top plate 13, and the display screen 5 is connected with the displacement sensor 2 in a communication manner, and is used for displaying a test result of the displacement sensor 2.

Further, as shown in fig. 2, a plurality of measuring holes 111 are provided in the position of the bottom plate 11 around the positioning boss 113, the displacement sensor 2 is provided in the housing 1, and the sensor probe 21 of the displacement sensor 2 can be passed out from the measuring holes 111. The main body of the displacement sensor 2 is arranged in the shell 1 to avoid collision, but the sensor probe 21 penetrates out of the measuring hole 111 to perform step difference test on the aircraft skin and the mounting seat.

Alternatively, as shown in fig. 2, the bottom plate 11 and the positioning boss 113 are each provided in a circular shape, the positioning boss 113 and the bottom plate 11 are concentrically provided, and the positioning boss 113 is located at the center position of the bottom plate 11. The plurality of displacement sensors 2 are circularly arranged around the positioning boss 113 with uniform intervals therebetween.

Alternatively, as shown in fig. 3, the displacement sensor 2 is connected to the base plate 11 through the connecting member 3, one end of the connecting member 3 is provided with the displacement sensor 2, the other end is connected to the base plate 11 through a fastener, the fastener passes through the measuring hole 111 to fix the connecting member 3, the measuring hole 111 is provided as a waist-shaped hole, and the fastener can move in the waist-shaped hole to adjust the positions of the connecting plate and the displacement sensor 2. The fastener can adopt the bolt, and the connection is comparatively firm and easy dismounting.

Preferably, as shown in fig. 3, the waist-shaped hole is arranged along the radial extension of the bottom plate 11, and the size of a circle enclosed by the plurality of displacement sensors 2 can be adjusted by connecting the displacement sensors 2 at different positions in the waist-shaped hole, so that the multi-point step measuring device can be suitable for mounting seats with different diameters.

In order to prevent the angle of attack sensor or the static pressure sensor from interfering with the positioning protrusion 113, as shown in fig. 2 and 3, an avoidance hole 112 is formed in the bottom plate 11, and at least a partial area of the avoidance hole 112 is located at the positioning protrusion 113, so that a protrusion on the second measured surface can extend into the avoidance hole 112, and the positioning protrusion 113 can be completely attached to the mounting seat. In this embodiment, the avoidance hole 112 is provided in a long strip shape and extends to the bottom plate 11 outside the positioning boss 113, so that the sensor can be applied to the case where the attack angle sensor or the static pressure sensor extends out of the mounting seat.

It should be noted that the multi-point level difference measuring device provided in this embodiment is not limited to measuring the level difference between the aircraft skin and the mounting seat, and is also applicable to measuring the level difference between two objects having a level difference in other similar scenarios.

The measurement implementation process comprises the following steps:

s1: according to the diameter of the preset mounting seat, the positions of the displacement sensors 2 on the bottom plate 11 are adjusted and fixed;

s2: holding the handle 4, aligning the multi-point-position step measuring device with the aircraft skin around the pre-measured mounting seat, enabling the positioning protrusion 113 to be attached to the aircraft skin, adjusting the displacement sensor 2, enabling the sensor probe 21 of the displacement sensor 2 to be abutted against the aircraft skin, and adjusting the multi-point-position step measuring device to a zero position;

s3: and (3) moving the zeroed multi-point step difference measuring device to a predicted mounting seat, so that the positioning protrusion 113 is attached to the mounting seat to start measurement, and the displacement value measured by the displacement sensor 2 is the step value between the mounting seat and the aircraft skin.

Optionally, before step S1, the displacement sensor 2 may be calibrated, for example, by using a standard gauge to calibrate the displacement sensor 2, so as to ensure accuracy of the subsequent measurement result.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. Multi-point position step measuring device, its characterized in that includes:

the device comprises a shell (1), wherein the shell (1) comprises a bottom plate (11), a positioning protrusion (113) is arranged on the outer side surface of the bottom plate (11), and the positioning protrusion (113) is used for propping against a first measured surface;

the displacement sensors (2) are arranged on the bottom plate (11), the displacement sensors (2) are distributed around the positioning protrusions (113), the displacement sensors (2) are perpendicular to the side faces, deviating from the bottom plate (11), of the positioning protrusions (113) and can face the second measured surface, and the distance from the first measured surface to the second measured surface is measured.

2. The multi-point level difference measuring device according to claim 1, wherein a plurality of measuring holes (111) are provided at positions of the bottom plate (11) around the positioning protrusion (113), the displacement sensor (2) is disposed in the housing (1), and the sensor probe (21) of the displacement sensor (2) can pass through the measuring holes (111).

3. The multi-point level difference measuring device according to claim 2, wherein the displacement sensor (2) is connected to the bottom plate (11) through a connecting piece (3), one end of the connecting piece (3) is provided with the displacement sensor (2), the other end is connected to the bottom plate (11) through a fastening piece, the fastening piece passes through the measuring hole (111) to fix the connecting piece (3), the measuring hole (111) is provided with a waist-shaped hole, and the fastening piece can move in the waist-shaped hole to adjust the positions of the connecting piece (3) and the displacement sensor (2).

4. A multi-point level difference measuring device according to claim 3, characterized in that the base plate (11) and the positioning protrusion (113) are each provided in a circular shape, the positioning protrusion (113) and the base plate (11) being concentrically arranged.

5. The multi-point step measuring device according to claim 4, characterized in that the waist-shaped holes are arranged extending in the radial direction of the bottom plate (11).

6. The multi-point level difference measuring device according to claim 4, wherein a plurality of the displacement sensors (2) are circularly arranged around the positioning boss (113) at uniform intervals from each other.

7. The multi-point level difference measuring device according to any one of claims 1 to 6, wherein an avoidance hole (112) is provided on the bottom plate (11), and at least a partial region of the avoidance hole (112) is located at the positioning protrusion (113), so that a protrusion on the first measured surface can extend into the avoidance hole (112).

8. The multi-point level difference measuring device according to any one of claims 1 to 6, wherein the housing (1) further comprises a side plate (12) and a top plate (13), two ends of the side plate (12) are respectively connected with the bottom plate (11) and the bottom plate (11), an accommodating space is formed by enclosing the bottom plate (11), the side plate (12) and the top plate (13), and the displacement sensor (2) is accommodated in the accommodating space.

9. The multi-point level difference measuring device according to claim 8, characterized in that a handle (4) is provided on the outer side of the top plate (13), and the multi-point level difference measuring device can be moved by gripping the handle (4).

10. The multi-point level difference measuring device according to claim 8, wherein a display screen (5) is further disposed on an outer side surface of the top plate (13), and the display screen (5) is in communication connection with the displacement sensor (2) and is used for displaying a measurement result of the displacement sensor (2).