CN221280193U

CN221280193U - Pitch measuring device of blade

Info

Publication number: CN221280193U
Application number: CN202322771712.0U
Authority: CN
Inventors: 江道伟; 刘波; 杨常卫
Original assignee: Guangdong Huitian Aerospace Technology Co Ltd
Current assignee: Guangdong Huitian Aerospace Technology Co Ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-07-05
Anticipated expiration: 2033-10-16

Abstract

The application relates to a blade pitch measuring device. The device comprises a bench, wherein a blade installation assembly is arranged on the bench, and the blade installation assembly is used for detachably installing a blade; the guide assembly is arranged on the rack and is arranged along the extending direction of the blade; the measuring unit comprises an angle measuring assembly and a distance measuring assembly, the angle measuring assembly is movably arranged on the guide assembly, the angle measuring assembly comprises an angle measuring instrument and a measuring piece, the measuring piece is used for being in contact with the blade, and the angle measuring instrument is used for measuring the angle value of the measuring piece; the distance measuring assembly is fixed relative to the bench for measuring displacement data of the measuring assembly on the guide assembly. According to the scheme provided by the application, measurement of blade pitch data of various different configurations can be supported, the universality is good, the efficiency of measuring the blade pitch of various sections is improved, and the measurement data is more accurate.

Description

Pitch measuring device of blade

Technical Field

The application relates to the technical field of aviation, in particular to a blade pitch measuring device.

Background

In the flight process of the helicopter, the dual functions of lift force and pull force generated by the rotor wing are determined by the special shape of the blade, and the profile of the blade body of the blade is in special-shaped curved surface transition according to the aerodynamic characteristics and the motion parameters of the composite material blade, and the pitch of the blade is changed differently at different sections.

In the related art, the pitch parameter is usually detected by using means such as a profiling clamping plate and three-dimensional scanning, so that the blades with different configurations are difficult to support, the clamping plate has insufficient detection precision, and the three-dimensional scanning detection efficiency is low.

Disclosure of utility model

In order to solve or partially solve the problems existing in the related art, the application provides a blade pitch measuring device, which can support the measurement of blade pitch data of various different configurations, has good universality, improves the efficiency of blade pitch measurement of a plurality of sections, and has more accurate measurement data.

A first aspect of the present application provides a pitch measurement device for a blade, comprising:

The device comprises a rack, a blade mounting assembly and a blade mounting assembly, wherein the blade mounting assembly is used for detachably mounting a blade;

the guide assembly is arranged on the rack and along the extending direction of the blade;

The measuring unit comprises an angle measuring assembly and a distance measuring assembly, the angle measuring assembly is movably arranged on the guide assembly, the measuring assembly comprises an angle measuring instrument and a measuring piece, the measuring piece is used for being in contact with the blade, and the angle measuring instrument is used for measuring the angle value of the measuring piece; the distance measuring assembly is fixed relative to the gantry for measuring displacement data of the measuring assembly on the guide assembly.

In one embodiment, the blade mounting assembly comprises a base, a first rotating member arranged on the base, and a clamping mechanism mounted on the first rotating member, wherein the root of the blade is assembled on the clamping mechanism; the first rotating piece can drive the blade to rotate so as to adjust the axial position of the blade.

In an embodiment, the guiding assembly comprises a linear guide rail, the blade mounting assembly is arranged at the starting end of the linear guide rail, the linear guide rail is provided with a moving assembly, the angle measuring assembly is fixed on the moving assembly, and the moving assembly is provided with a first locking assembly which is used for locking the moving assembly at any position of the linear guide rail.

In one embodiment, the angle measurement assembly comprises a lifting mechanism and a lifting platform connected with the lifting mechanism, wherein the lifting mechanism is used for driving the lifting platform to lift;

the lifting platform is provided with a mounting block, the mounting block is provided with a second rotating piece, the angle measuring instrument and the measuring piece are connected with the second rotating piece, the second rotating piece is used for driving the angle measuring instrument and the measuring piece to rotate, and the rotating axis is parallel to the axis of the blade.

In one embodiment, the angle measuring assembly further comprises a rotation adjusting member and a second locking member; the rotation adjusting piece is used for adjusting the rotation angle of the second rotation piece, and the second locking piece is used for locking the second rotation piece at a preset rotation angle.

In an embodiment, the angle measurement assembly further comprises an axis alignment device for aligning the axis of the blade with the first rotating member.

In one embodiment, the axis calibration device comprises a calibrator and a bracket connected between the calibrator and the moving assembly, the bracket comprising a plurality of links connected in sequence.

In an embodiment, the ranging assembly comprises a laser ranging module mounted on the gantry at an end of the guide assembly remote from the blade mounting assembly for measuring positional data of the measuring assembly on the guide assembly.

In one embodiment, the measuring member is a rod-shaped structure, and the length direction of the rod-shaped structure is perpendicular to the axis of the blade; or alternatively, the first and second heat exchangers may be,

The measuring piece is of a profiling structure, and the profiling structure is matched with the outer contour of the blade.

In an embodiment, the rack includes the support body and install in measurement mesa on the support body, paddle installation component, measuring unit and direction subassembly all install in measurement mesa, the bottom of support body is equipped with a plurality of travelling wheels, each travelling wheel through high adjustment mechanism with the support body links to each other, high adjustment mechanism is used for adjusting measurement mesa's height.

The technical scheme provided by the application can comprise the following beneficial effects:

The application provides a blade pitch measuring device, which comprises a rack, a guide assembly and a measuring unit, wherein the rack is provided with a blade mounting assembly, and the blade mounting assembly is used for detachably mounting a blade; the guide component is arranged on the bench and along the extending direction of the blade; the measuring unit comprises an angle measuring assembly and a distance measuring assembly, the angle measuring assembly is movably arranged on the guide assembly, the angle measuring assembly comprises an angle measuring instrument and a measuring piece, the measuring piece is used for being in contact with the surface of the blade, and the angle measuring instrument is used for measuring the angle value of the measuring piece; the distance measuring assembly is fixed relative to the gantry for measuring displacement data of the angle measuring assembly on the guide assembly. Because the blade installation component can detachably install the blade to be measured, when the angle measurement component moves along the guide component, the pitch parameters of different sections of the length direction of the blade can be measured, the measurement of the pitch parameters of the blades with different configurations can be supported, the pitch parameters of any section of the blade can be rapidly measured, and the measurement accuracy of the pitch parameters is higher.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

FIG. 1 is a perspective view of a pitch measurement device of a blade shown in an embodiment of the application;

FIG. 2 is a side view of a pitch measurement device of a blade shown in an embodiment of the application;

FIG. 3 is an enlarged schematic view of an angle measurement assembly of a pitch measurement device of a blade shown in an embodiment of the application;

FIG. 4 is an enlarged schematic view of another perspective of an angle measurement assembly of a pitch measurement device of a blade, according to an embodiment of the present application.

Reference numerals: 100 stands; 110 frame bodies; a measurement mesa 120; a traveling wheel 111; blade mounting assembly 200; a base 210; a first rotating member 220; a clamping mechanism 230; an angle measurement assembly 300; a lifting mechanism 310; a lifting platform 320; a mounting block 330; a measuring member 340; an angle gauge 350; a second rotating member 360; a calibrator 370; a bracket 371; a ranging assembly 400; a linear guide 500; a moving assembly 510; a first locking member 511; blade 600.

Detailed Description

Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly, as they may be fixed, removable, or integral, for example; 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 application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the related art, the pitch parameter is usually detected by using means such as a profiling clamping plate and three-dimensional scanning, so that the blades with different configurations are difficult to support, the clamping plate has insufficient detection precision, and the three-dimensional scanning detection efficiency is low. Aiming at the problems, the embodiment of the application provides the blade pitch measuring device which can support the measurement of blade pitch data of various different configurations, has good universality, improves the efficiency of blade pitch measurement of a plurality of sections and has more accurate measurement data.

The following describes the technical scheme of the embodiment of the present application in detail with reference to the accompanying drawings.

Fig. 1 is a perspective view of a pitch measurement device for a blade according to an embodiment of the present application.

Referring to fig. 1, the present application provides a pitch measurement device of a blade, comprising a gantry 100, a guiding assembly and a measurement unit; the stage 100 is mounted with a blade mounting assembly 200, the blade mounting assembly 200 for detachably mounting the blade 600; the guide assembly is provided along the extension direction X of the blade 600 and provided on the stage 100; the measuring unit comprises an angle measuring assembly 300 and a distance measuring assembly 400, the angle measuring assembly 300 is movably arranged on the guiding assembly, the angle measuring assembly 300 comprises an angle measuring instrument 350 and a measuring piece 340, the measuring piece 340 is used for being in contact with the surface of the blade 600, and the angle measuring instrument 350 is used for measuring the angle value of the measuring piece 340; the distance measuring assembly is fixed relative to the gantry 100 for measuring displacement data of the angle measuring assembly 300 on the guide assembly.

According to the scheme provided by the application, as the blade mounting assembly 200 can detachably mount the blade 600 to be measured, when the angle measuring assembly 300 moves along the guide assembly, the pitch parameters at different sections of the length direction X of the blade 600 can be measured, the measurement of the pitch parameters of the blade 600 in different configurations can be supported, the rapid measurement of the pitch parameters at any section of the blade 600 can be realized, and the measurement precision of the pitch parameters is higher.

In this embodiment, the stand 100 may be adapted to mount paddles of different sizes and different lengths. Blade 600 may be a multi-rotor aircraft blade made of a composite material, the blade having a profile with a curved transition profile, and having a total blade length within 1.6 m.

The bench 100 comprises a bench body 110 and a measuring table top 120 arranged on the bench body 110, wherein the blade installation assembly 200, the measuring unit and the guiding assembly are all arranged on the measuring table top 120, a plurality of traveling wheels 111 are arranged at the bottom of the bench body 110, each traveling wheel 111 is connected with the bench body 110 through a height adjusting mechanism, and the height adjusting mechanism is used for adjusting the height of the measuring table top 120 so as to keep the measuring table top 120 in a horizontal state during each measurement, and avoid deviation of pitch measurement.

Referring to fig. 1 and 2, in some embodiments, the blade mounting assembly 200 includes a base 210, a first rotating member 220 provided on the base 210, and a clamping mechanism 230 mounted on the first rotating member 220, wherein a root portion of the blade 600 is mounted on the clamping mechanism 230; the rotation axis of the first rotating member 220 is along the vertical direction Z, and can drive the blade 600 to rotate along the horizontal plane, so as to adjust the measurement reference axis of the blade 600.

The first rotating member 220 may be a bearing, and the blade mounting assembly 200 further includes a locking member for locking the bearing, so that the blade 600 is positioned after the measurement reference axis is calibrated, by rotating the bearing.

In this embodiment, the blade mounting assembly 200 includes a switching structure, where the clamping mechanism 230 is connected to the first rotating member 220 through the switching structure, where the switching structure includes a connecting member connected to the first rotating member 220 and a transition member connected to the connecting member, where the clamping mechanism 230 is fixed to the transition member, and the switching structure can be connected to the transition members with different structures, so that the blade 600 with different structures can be adapted to be mounted, so as to implement the measurement of universality.

In this embodiment, the root of the blade 600 is detachably fixed to the clamping mechanism 230, that is, fixed by a cantilever manner, the clamping mechanism 230 may include a limiting block and a compressing block, the limiting block is provided with a clamping groove, and the root of the blade 600 is compressed by the compressing block after being clamped into the clamping groove.

FIG. 2 is a side view of a pitch measurement device of a blade shown in an embodiment of the application; FIG. 3 is an enlarged schematic view of an angle measurement assembly 300 of a pitch measurement device of a blade, according to an embodiment of the application.

Referring to fig. 2 and 3, in some embodiments, the guiding assembly includes a linear guide rail 500, the extending direction of the linear guide rail 500 is the same as the axial direction of the blade 600, the length of the linear guide rail 500 may be greater than or equal to the length of the blade 600, the blade mounting assembly 200 is disposed at the start end of the linear guide rail 500, the linear guide rail 500 is provided with a moving assembly 510, the angle measuring assembly 300 is fixed to the moving assembly 510, and when the moving assembly 510 slides along the linear guide rail 500, the angle measuring assembly 300 can move along with the moving assembly, so as to measure pitch parameters of the blade 600 at different sections in the length direction.

In this embodiment, the moving assembly 510 is provided with a first locking member 511, and the first locking member 511 is used to lock the moving assembly 510 at any position of the linear guide 500, so that the angle measuring assembly 300 is stable during measurement.

Referring to fig. 1, in some embodiments, the ranging assembly 400 includes a laser ranging module mounted on the gantry 100 at an end of the linear guide rail 500 remote from the blade mounting assembly 200, i.e., at the other end of the linear guide rail 500 opposite the start end, for measuring position data of the angle measuring assembly on the guide assembly. The laser ranging module may emit laser light to measure the distance of the current angle measurement assembly 300 from the reference to the emission start position.

Referring to fig. 3 and 4, in some embodiments, the angle measurement assembly 300 includes a lifting mechanism 310 and a lifting platform 320 connected to the lifting mechanism 310, where the lifting mechanism 310 is configured to lift the lifting platform 320; the lifting platform 320 is provided with a mounting block 330, the mounting block 330 is provided with a second rotating member 360, the angle measuring instrument 350 and the measuring member 340 are connected with the second rotating member 360, the second rotating member 360 is used for driving the angle measuring instrument 350 and the measuring member 340 to rotate, and the rotation axis is parallel to the axis of the blade 600.

The lifting mechanism 310 is further provided with an adjusting knob 311 capable of adjusting the lifting height, and fine adjustment of the lifting platform 320 can be achieved through the adjusting knob 311 so as to adapt to different blade 600 profiles. The angle measuring instrument 350 may be a magnetic digital display angle meter, and can read the angle value of the current measuring piece 340 in real time. The position of the measuring member 340 is adjustable, so that the front and rear ends of the measuring member 340 are in contact with the front and rear edges of the blade 600 at the same time, and in this embodiment, the front and rear direction is the Y direction, and the direction X perpendicular to the axis of the blade 600.

In some embodiments, angle measurement assembly 300 further includes a rotation adjustment member and a second locking member; the rotation adjusting member is used for adjusting a rotation angle of the second rotating member 360, the second locking member is used for locking the second rotating member 360 at a preset rotation angle, wherein the second rotating member 360 can be a rotation sliding table,

The rotation adjusting member can coarsely and finely adjust the rotation angle of the rotary sliding table, when the measuring member 340 contacts with the front and rear edges of the blade 600 at the same time, the rotary sliding table is locked, and the digital display device of the angle measuring instrument 350 can display the pitch angle data of the blade 600.

In some embodiments, angle measurement assembly 300 further includes an axis calibration device provided to movement assembly 510 for calibrating the axis of blade 600. The axis calibration device comprises a calibrator 370 and a bracket 371 connected between the calibrator 370 and the movable assembly 510, wherein the bracket 371 comprises a plurality of connecting rods connected in sequence, the connecting rods are rotatably connected, the rotation plane is perpendicular to the axis of the blade 600, the calibrator 370 can be a dial indicator or a dial indicator, and the calibration and alignment of the axis of the blade 600 and a reference axis are realized through the calibrator 370.

In some embodiments, the measurement member 340 is a rod-like structure having a length perpendicular to the axis of the blade 600, or the measurement member 340 is a contoured structure that matches the outer profile of the blade 600.

The device of the embodiment comprises the following operation procedures when measuring the pitch of the blade:

Blade installation and alignment process: firstly, the blade 600 is installed through the clamping mechanism 230, the rotation angle of the first rotating member 220 is adjusted, the dial indicator is controlled to align the axis of the blade 600 with the reference axis, wherein when the reading of the dial indicator is unchanged, the axis of the blade 600 is aligned with the reference axis, and then the first rotating member 220 is locked, so that the first rotating member 220 is fixed relative to the base 210, and the blade 600 is in an alignment state.

The measuring process comprises the following steps: after the angle measuring assembly 300 is moved to a position to be measured along the linear guide rail 500, the moving assembly 510 is locked, the moving assembly 510 is fixed relative to the linear guide rail 500, the lifting mechanism 310 is finely adjusted, the lifting platform 320 is lifted to a proper height and then locked, the rotation angle of the second rotating member 360 and the angle of the measuring member 340 are adjusted, the profile surface of the measuring member 340 is simultaneously contacted with the front edge and the rear edge of the blade 600, and then the second rotating member 360 is locked. After the calibrated angle measuring instrument 350 is turned on, the angle measuring instrument 350 can display the current angle value, then turn on the laser ranging module, record the position data of the current moving component 510, and complete the measuring process.

According to the device provided by the embodiment, the blade mounting assembly 200 can be used for mounting blades with different configurations, so that measurement of the blade 600 pitch data with various different configurations can be supported, and the universality is good; moreover, since angle measurement assembly 300 may be positioned at any location of linear guide rail 500, efficiency of pitch measurement of blade 600 across multiple sections is improved, and changes in pitch angle data may be measured and read more accurately. Through the output of the pitch data, the angle numerical conditions of the pitch of the blade 600 under different sections can be analyzed, the consistency of the pitch deformation can be better controlled, particularly, the blade 600 made of composite materials with larger size has good detection consistency, and the product offline quality can be improved.

The foregoing description of embodiments of the application has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A pitch measurement device for a blade, comprising:

The measuring unit comprises an angle measuring assembly and a distance measuring assembly, the angle measuring assembly is movably arranged on the guide assembly, the angle measuring assembly comprises an angle measuring instrument and a measuring piece, the measuring piece is used for being in contact with the blade, and the angle measuring instrument is used for measuring the angle value of the measuring piece; the distance measuring assembly is fixed relative to the gantry for measuring displacement data of the angle measuring assembly on the guide assembly.

2. A pitch measurement device of a blade according to claim 1, characterized in that:

The blade mounting assembly comprises a base, a first rotating piece arranged on the base and a clamping mechanism arranged on the first rotating piece, and the root of the blade is assembled on the clamping mechanism; the first rotating piece can drive the paddle to rotate.

3. A pitch measurement device of a blade according to claim 1, characterized in that:

The guide assembly comprises a linear guide rail, the blade installation assembly is arranged at the starting end of the linear guide rail, the linear guide rail is provided with a moving assembly, the angle measurement assembly is fixed on the moving assembly, a first locking assembly is arranged on the moving assembly and used for locking the moving assembly at any position of the linear guide rail.

4. A pitch measurement device of a blade according to claim 1, characterized in that:

The angle measurement assembly comprises a lifting mechanism and a lifting platform connected with the lifting mechanism, and the lifting mechanism is used for driving the lifting platform to lift;

5. A pitch measurement device of a blade according to claim 4, wherein:

The angle measuring assembly further comprises a rotation adjusting piece and a second locking piece; the rotation adjusting piece is used for adjusting the rotation angle of the second rotation piece, and the second locking piece is used for locking the second rotation piece at a preset rotation angle.

6. A pitch measurement device of a blade according to claim 3, wherein:

The angle measurement assembly further comprises an axis calibration device arranged on the moving assembly, and the axis calibration device is used for calibrating the axis of the blade.

7. A pitch measurement device of a blade according to claim 6, wherein:

The axis calibration device comprises a calibrator and a bracket connected between the calibrator and the moving assembly, wherein the bracket comprises a plurality of connecting rods which are sequentially connected.

8. A pitch measurement device of a blade according to claim 1, characterized in that:

The distance measuring assembly comprises a laser distance measuring module, wherein the laser distance measuring module is arranged on the bench at one end, far away from the blade mounting assembly, of the guide assembly and is used for measuring position data of the measuring assembly on the guide assembly.

9. A pitch measurement device of a blade according to claim 1, characterized in that:

The measuring piece is of a rod-shaped structure, and the length direction of the rod-shaped structure is perpendicular to the axis of the blade; or alternatively, the first and second heat exchangers may be,

10. A pitch measurement device of a blade according to any of claims 1-9, wherein:

The rack comprises a rack body and a measuring table top arranged on the rack body, wherein the blade installation assembly, the measuring unit and the guiding assembly are all arranged on the measuring table top, a plurality of travelling wheels are arranged at the bottom of the rack body, each travelling wheel is connected with the rack body through a height adjusting mechanism, and the height adjusting mechanism is used for adjusting the height of the measuring table top.