Blade profile detection tool

Abstract

The invention relates to the technical field of aviation aircraft blade detection, in particular to a blade profile detection tool. The detection tool comprises a paddle root fixing part, the paddle root fixing part comprises a paddle root mounting table located on the lower portion, the upper portion of the paddle root mounting table is detachably connected with a locking cover plate, one side of the paddle root mounting table is connected with a lower mounting plate, the upper portion of the lower mounting plate is detachably connected with an upper mounting plate, and a paddle is located between the upper mounting plate and the lower mounting plate. And a plurality of groups of detection clamping plates are detachably connected between the upper mounting plate and the lower mounting plate. According to the invention, through mutual cooperation of the paddle root mounting table and the locking cover plate, the paddle root can be simply and conveniently locked, the boss on the inner wall of the paddle root shaft sleeve can be clamped with the periphery of the paddle root, and an x-direction positioning effect on the to-be-tested paddle is achieved. The upper mounting plate, the lower mounting plate and the detection clamping plates are detachably connected, the detection clamping plates can be replaced in time according to the profile requirement of the blade to be detected, the number of the clamping plates can be freely selected, and simultaneous measurement of multiple positions is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft blade detection, and in particular to a blade profile detection tool. Background Art

[0002] As a key component in many power transmission and propulsion systems, the surface inspection of blades is of great significance. The main purpose of blade surface inspection is to ensure that the appearance and structural dimensions meet the design requirements, thereby ensuring its working performance and safety, and providing a solid and reliable guarantee for the safety of the entire related system. Through inspection, deformation, wear and other problems that may occur in the production or use of blades can be discovered in time, providing a basis for subsequent repair or replacement.

[0003] The current blade inspection method is to use a blade clamp for direct observation, but this method can only detect whether a specific position of the blade meets the use requirements. It cannot meet the requirements of multi-point synchronous measurement, and it cannot detect whether the blade torsion angle meets the use requirements. This causes inaccurate measurement results, making it difficult to fully and systematically grasp the overall surface condition of the blade, and it is impossible to accurately measure whether the blade actually meets the design requirements, which in turn affects the quality control of the blade and the stable operation and safety of related systems to a certain extent. Summary of the invention

[0004] The object of the present invention is to provide a blade surface detection tool, which can solve the above-mentioned technical problems, can be used for different blades, and realize synchronous measurement of blade surface at multiple positions.

[0005] The present invention provides a blade profile detection tool, including a blade root fixing part, the blade root fixing part includes a blade root mounting platform located below, the top of the blade root mounting platform is detachably connected to a locking cover plate, one side of the blade root mounting platform is connected to a lower mounting plate, the top of the lower mounting plate is detachably connected to an upper mounting plate, the blade is located between the upper mounting plate and the lower mounting plate, and the upper mounting plate and the lower mounting plate are detachably connected to a plurality of groups of detection card plates.

[0006] Preferably, the detection card plate includes an upper card plate and a lower card plate that are relatively arranged, the top end of the upper card plate is detachably connected to the upper mounting plate, the bottom end of the upper card plate is provided with an upper profile consistent with the blade profile, the bottom end of the lower card plate is detachably connected to the lower mounting plate, and the top end of the lower card plate is provided with a lower profile consistent with the blade profile.

[0007] Preferably, an upper slide groove and a lower slide groove are respectively provided on the opposite side of the upper mounting plate and the lower mounting plate, the two sides of the top end of the upper clamping plate are connected with the side walls of the upper slide groove by screws, and the two sides of the bottom end of the lower clamping plate are connected with the side walls of the lower slide groove by screws.

[0008] Preferably, the upper clamping plate and the lower clamping plate can slide along the upper sliding groove and the lower sliding groove respectively.

[0009] Preferably, a plurality of threaded holes are equidistantly arranged on the side walls of the upper slide groove and the lower slide groove.

[0010] Preferably, the upper mounting plate and the lower mounting plate are connected via a positioning shaft.

[0011] Preferably, two positioning shafts are provided, and the positioning shafts are arranged along the diagonal lines of the upper mounting plate and the lower mounting plate.

[0012] Preferably, the propeller root mounting platform and the locking cover plate are connected by screws.

[0013] Preferably, a blade root sleeve is provided between the blade root fixing portion and the blade root, the blade root sleeve comprises an upper sleeve and a lower sleeve, the inner walls of the upper sleeve and the lower sleeve are provided with a circle of bosses along the circumferential direction, and the bosses are engaged with the outer periphery of the blade root.

[0014] Preferably, the corresponding central angles of the upper sleeve and the lower sleeve are both smaller than 180°.

[0015] Beneficial effects:

[0016] The present invention can lock the propeller root simply and conveniently by cooperating with the propeller root mounting platform and the locking cover plate, and the boss on the inner wall of the propeller root sleeve can be engaged with the outer periphery of the propeller root to play the role of x-direction positioning for the blade to be tested. The upper mounting plate, the lower mounting plate and the detection card plate of the present invention are detachably connected, and the detection card plate can be replaced in time according to the requirements of the blade profile to be tested, and the number of card plates can be freely selected, realizing simultaneous measurement of multiple positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the upper mounting plate of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the propeller root mounting platform and the lower mounting plate of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the detection card board of the present invention;

[0022] Figure 5 It is a schematic diagram of the propeller root sleeve structure of the present invention.

[0023] Description of reference numerals:

[0024] 1-propeller root mounting platform, 101-through hole, 2-locking cover, 3-upper mounting plate, 301-upper slide groove, 302-upper positioning hole, 303-threaded hole, 4-lower mounting plate, 401-lower slide groove, 402-lower positioning hole, 5-positioning shaft, 6-blade to be tested, 7-detection card plate, 701-upper card plate, 702-upper mounting part, 703-upper profile, 704-lower profile, 705-lower card plate, 706-lower mounting part, 8-propeller root sleeve, 801-upper sleeve, 802-lower sleeve, 803-boss. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1

[0029] like Figure 1-5 As shown, a blade profile detection tool comprises a blade root fixing part, the blade root fixing part comprises a blade root mounting platform 1 located below, and the blade root mounting platform 1 is screwed to a locking cover plate 2. The blade root mounting platform 1 and the locking cover plate 2 are provided with a plurality of through holes 101 on both sides of the blade root, and screws can pass through the through holes 101 to connect the blade root mounting platform 1 and the locking cover plate 2.

[0030] A blade root sleeve 8 is provided between the blade root fixing part and the blade root, and the outer periphery of the blade root sleeve 8 is in contact with the inner wall of the blade root fixing part, so the installation is stable. The blade root sleeve 8 includes an upper sleeve 801 and a lower sleeve 802. The inner walls of the upper sleeve 801 and the lower sleeve 802 are provided with a circle of bosses 803 along the circumferential direction, and the bosses 803 are engaged with the outer periphery of the blade root. The central angles corresponding to the upper sleeve 801 and the lower sleeve 802 are both less than 180°. Preferably, the central angles corresponding to the upper sleeve 801 and the lower sleeve 802 are 170°, so as to ensure that the upper sleeve 801 and the lower sleeve 802 can lock the blade 6 to be tested, avoid displacement of the blade 6 to be tested, and ensure the detection accuracy. The blade root sleeve 8 can be freely replaced according to the root shape of the blade 6 to be tested, so as to meet the needs of various blade profile measurement work.

[0031] One side of the propeller root mounting platform 1 is connected to the lower mounting plate 4, and the propeller root mounting platform 1 and the lower mounting plate 4 are an integrated structure. The upper mounting plate 3 and the lower mounting plate 4 are connected by a positioning shaft 5. Two positioning shafts 5 are provided, and the positioning shafts 5 are arranged along the diagonal lines of the upper mounting plate 3 and the lower mounting plate 4, respectively on both sides of the propeller blade. The upper mounting plate 3 and the lower mounting plate 4 are respectively provided with an upper positioning hole 302 and a lower positioning hole 402, and the positioning shaft 5 passes through the upper positioning hole 302 and the lower positioning hole 402 in sequence. The end of the positioning shaft 5 is fixedly connected to a nut, so as to facilitate the adjustment of the distance between the upper positioning hole 302 and the lower positioning hole 402.

[0032] The paddle is located between the upper mounting plate 3 and the lower mounting plate 4 , and the upper mounting plate 3 and the lower mounting plate 4 are detachably connected to a plurality of groups of detection card plates 7 .

[0033] The detection card plate 7 includes an upper card plate 701 and a lower card plate 705 which are arranged relatively, the top of the upper card plate 701 is detachably connected to the upper mounting plate 3, the bottom of the upper card plate 701 is provided with an upper profile 703 which is consistent with the design requirements of the blade profile, the bottom of the lower card plate 705 is detachably connected to the lower mounting plate 4, and the top of the lower card plate 705 is provided with a lower profile 704 which is consistent with the design requirements of the blade profile. The corresponding detection card plate 7 can be selected according to the profile of the blade 6 to be tested. A space with the same cross-sectional shape as that of a standard blade is formed between the upper profile 703 and the lower profile 704, which is convenient for testing and comparing the profile of the blade 6 to be tested.

[0034] An upper slide groove 301 and a lower slide groove 401 are respectively provided on the opposite side of the upper mounting plate 3 and the lower mounting plate 4. A plurality of threaded holes 303 are evenly spaced on the side walls of the upper slide groove 301 and the lower slide groove 401. The spacing between the threaded holes 303 is small, which is convenient for increasing the fixed position of the detection card plate 7. An upper mounting portion 702 is provided at the top of the upper card plate 701, and a lower mounting portion 706 is provided at the bottom of the lower card plate 705. Both sides of the upper mounting portion 702 are connected with the side walls of the upper slide groove 301 by screws, and both sides of the lower mounting portion 706 are connected with the side walls of the lower slide groove 401 by screws. The upper mounting portion 702 and the lower mounting portion 706 can slide along the upper slide groove 301 and the lower slide groove 401, respectively, so that the upper card plate 701 and the lower card plate 705 can be adjusted to the target position simply and conveniently.

[0035] The number and installation positions of the detection card plates 7 can be adjusted according to needs, and multiple groups of detection card plates 7 can be installed at the same time to perform multi-point detection on the blades 6 to be tested.

[0036] Working principle:

[0037] Put the lower clamping plate 705 into the lower slide groove 401, adjust it to the target position, and screw through the threaded hole 303 to connect the lower mounting portion 706 with the lower slide groove 401;

[0038] The root of the blade 6 to be tested is placed on the root mounting platform 1, and is engaged with the inner wall boss 803 of the lower sleeve 802. Then, the upper sleeve 801 and the locking cover plate 2 are installed. The screws pass through the through hole 101 to connect the root mounting platform 1 and the locking cover plate 2, and the blade 6 to be tested is fixed in the x direction, and the blade 6 to be tested is close to the lower clamping plate 705.

[0039] Place the upper card plate 701 into the upper slide groove 301, adjust it to be opposite to the lower card plate 705, and screw through the threaded hole 303 to connect the upper mounting portion 702 and the upper slide groove 301 to complete the installation of the upper card plate 701;

[0040] The upper mounting plate 3 with the upper clamping plate 701 installed is placed above the blade to be tested 6, and the upper mounting plate 3 and the lower mounting plate 4 are connected via the positioning shaft 5 to complete the assembly of the present invention.

[0041] Then, the distance between the blade 6 to be tested and the upper molding surface 703 and the lower molding surface 704 is tested by a feeler gauge to check whether the blade 6 to be tested meets the molding surface requirements.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A blade profile detection tool, characterized in that: It includes a propeller root fixing part, which includes a propeller root mounting platform located below, the top of the propeller root mounting platform is detachably connected to a locking cover plate, one side of the propeller root mounting platform is connected to a lower mounting plate, the top of the lower mounting plate is detachably connected to an upper mounting plate, the propeller blades are located between the upper mounting plate and the lower mounting plate, and the upper mounting plate and the lower mounting plate are detachably connected to a plurality of detection card plates.

2. The blade profile detection tool according to claim 1, characterized in that: The detection card plate includes an upper card plate and a lower card plate that are arranged opposite to each other. The top end of the upper card plate is detachably connected to the upper mounting plate, and the bottom end of the upper card plate is provided with an upper profile consistent with the blade profile. The bottom end of the lower card plate is detachably connected to the lower mounting plate, and the top end of the lower card plate is provided with a lower profile consistent with the blade profile.

3. The blade profile detection tool according to claim 2, characterized in that: An upper slide groove and a lower slide groove are respectively provided on opposite sides of the upper mounting plate and the lower mounting plate; both sides of the top end of the upper clamping plate are connected with the side wall screws of the upper slide groove; and both sides of the bottom end of the lower clamping plate are connected with the side wall screws of the lower slide groove.

4. The blade profile detection tool according to claim 3, characterized in that: The upper clamping plate and the lower clamping plate can slide along the upper sliding groove and the lower sliding groove respectively.

5. The blade profile detection tool according to claim 2, characterized in that: A plurality of threaded holes are equidistantly arranged on the side walls of the upper slide groove and the lower slide groove.

6. The blade profile detection tool according to claim 1, characterized in that: The upper mounting plate and the lower mounting plate are connected via a positioning shaft.

7. The blade profile detection tool according to claim 6, characterized in that: Two positioning shafts are provided, and the positioning shafts are arranged along the diagonal lines of the upper mounting plate and the lower mounting plate.

8. The blade profile detection tool according to claim 1, characterized in that: The propeller root mounting platform and the locking cover plate are connected by screws.

9. The blade profile detection tool according to claim 1, characterized in that: A blade root sleeve is provided between the blade root fixing portion and the blade root. The blade root sleeve comprises an upper sleeve and a lower sleeve. A circle of bosses is provided on the inner walls of the upper sleeve and the lower sleeve along the circumferential direction. The bosses are engaged with the outer periphery of the blade root.

10. The blade profile detection tool according to claim 9, characterized in that: The central angles of the upper sleeve and the lower sleeve are both smaller than 180°.

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