Measuring device for turbine moving blade

Abstract

The invention provides a measuring device for turbine moving blades. The measuring device comprises a base. The first longitudinal moving assembly is arranged on one side of the base; the micro-texture loading assembly is arranged on the first longitudinal moving assembly in a sliding manner; the second longitudinal moving assembly is arranged on the base, and the second longitudinal moving assembly is arranged on one side of the first longitudinal moving assembly; the clamp assembly is arranged on the base, the clamp assembly is arranged between the second longitudinal moving assemblies, and the clamp assembly is used for clamping turbine moving blades; by means of the design, how the micro-texture influences the dry friction state of the turbine movable blade crown can be rapidly detected and analyzed, and then the damping effect of dry friction of the turbine movable blade crown is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of turbine moving blade measurement, in particular to a measuring device for turbine moving blades. Background Art

[0002] Turbine blades are important components in turbine machinery that guide fluid flow in a certain direction and drive the rotor to rotate. However, turbine blades often produce large vibrations during rotation. The structure of turbine blades usually consists of a blade body, a blade root and a blade crown. The blade crown of the turbine blade not only reduces air leakage, but also acts as a vibration damper under the action of dry friction.

[0003] In the prior art, micro-textured surface processing has received widespread attention as a process for improving surface friction conditions. However, few people have studied the experimental measurement device that combines the micro-textured surface processing technology with the blade crown. Therefore, there is an urgent need for a measurement device for turbine blades to study how the micro-textured surface processing technology can improve the dry friction state of the turbine blade crown surface, thereby affecting the vibration response of the turbine blades. At the same time, there are no corresponding characterization parameters in the prior art to characterize the vibration response performance of turbine blades with micro-textured surfaces. Summary of the invention

[0004] The object of the present invention is to provide a measuring device for turbine moving blades to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above problems, the present invention provides a measuring device for turbine moving blades, comprising a base; a first longitudinal moving component mounted on one side of the base; a micro-texture loading component slidably mounted on the first longitudinal moving component; a second longitudinal moving component mounted on the base, the second longitudinal moving component mounted on one side of the first longitudinal moving component; a clamp component mounted on the base, the clamp component mounted between the second longitudinal moving components, the clamp component being used to clamp the turbine moving blades; and a vibration component mounted on the second longitudinal moving component.

[0006] Furthermore, the first longitudinal moving assembly includes a first longitudinal bracket installed on the base, and a first guide rail is installed on the first longitudinal bracket.

[0007] Furthermore, the micro-texture loading assembly includes a first guide seat slidably arranged on the first guide rail, and the micro-texture loading assembly also includes a first hydraulic cylinder installed on the base, the output end of the first hydraulic cylinder is provided with a first hydraulic rod, the first hydraulic rod is connected to the first guide seat, and the first hydraulic cylinder pushes the first guide seat to move on the first guide rail through the first hydraulic rod; a first mounting plate is fixedly provided on the first guide seat, and a first mounting groove is provided on the first mounting plate; a first loading seat is provided on the first mounting groove, and the first loading seat is convex in design, and a first fastening bolt is provided between the first loading seat and the first mounting groove for fastening the first loading seat and the first mounting plate.

[0008] Furthermore, a first mounting hole is provided on the first loading seat, a first mounting rod is threadedly provided in the first mounting hole, a first force sensor is installed at one end of the first mounting rod, a first guide sleeve is installed at one end of the first force sensor, a first micro-texture mounting rod is provided in the first guide sleeve, a first fastening hole is provided on the first guide sleeve, a first fastening pin is provided between the first fastening hole and the first micro-texture mounting rod, the first fastening pin is threadedly connected to the first fastening hole, and the first fastening pin is used for fixing and clamping the first micro-texture mounting rod and the first guide sleeve; a first micro-texture pressure plate is provided at one end of the first micro-texture mounting rod.

[0009] Furthermore, the second longitudinal moving assembly includes a second hydraulic cylinder installed on the base, a second hydraulic rod is installed at the output end of the second hydraulic cylinder, and the second hydraulic rod is connected to a vibration assembly.

[0010] Furthermore, the clamp assembly includes a first fixed seat installed between the second hydraulic cylinders, a first clamp body is installed on the first fixed seat, a first clamp groove is provided on the first clamp body, a first clamp hole is also provided on the first clamp body, a first fastening rod is provided in the first clamp hole in conjunction with a threaded transmission, and the first fastening rod is used for fastening the turbine moving blades clamped in the first mounting groove.

[0011] Furthermore, the vibration assembly includes a second mounting plate mounted on the second hydraulic rod, and the second mounting plate is provided with a second mounting groove.

[0012] Furthermore, a first vibrator is fixed on the second mounting groove, the first vibrator includes a first vibration fixing seat installed on the second mounting groove, a second fastening bolt is installed between the first vibration fixing seat and the second mounting groove; a first exciter is installed on the first vibration fixing seat, and a first excitation rod is installed at one end of the first exciter.

[0013] Furthermore, a first strain gauge is installed on the surface of the turbine moving blade, the first strain gauge is electrically connected to a data collector, and the data collector is electrically connected to a main controller.

[0014] A turbine moving blade measuring method using a turbine moving blade measuring device comprises:

[0015] Step 1: First, the scale of the surface micro-texture determines the scale of the first micro-texture platen, wherein the scale parameters of the surface micro-texture include diameter d and spacing w, and the scale parameters of the first micro-texture platen include length D and width B;

[0016] The scale parameters of the first micro-texture platen must satisfy D>5d and D>5w, and at the same time, B>5d and B>5w;

[0017] Step 2: the first micro-textured pressure plate presses the side surface of the turbine blade crown, and the first exciter is started to drive the first excitation rod to vibrate on the surface of the turbine blade;

[0018] Step 3: Through the first strain gauge, the data collector collects the vibration frequency response curve of the turbine blade surface.

[0019] Step 4: Analyze the vibration frequency response curve.

[0020] Furthermore, analyzing the vibration frequency response curve in the fourth step includes the following steps:

[0021] The first step is to perform wavelet transform on the surface vibration frequency curve z(x) according to the formula:

[0022]

[0023] Where z(x) is the vibration frequency curve, is the wavelet function, n is the translation parameter, m is the scale parameter, is the high frequency wavelet coefficient;

[0024] The second step is based on the formula:

[0025]

[0026] Get the high-frequency wavelet coefficients after transformation The relationship with the decomposition scale m is used to obtain the slope α;

[0027] The third step is based on the formula:

[0028]

[0029] Where Q is the parameter representing the vibration frequency curve

[0030] Beneficial effects achieved by the present invention:

[0031] The present invention can simultaneously and rapidly drive the micro-texture loading component and the vibration component to move rapidly by designing the first longitudinal moving component and the second longitudinal moving component. At the same time, according to the different micro-texture scale parameters, the micro-texture loading component can rapidly replace the first micro-texture pressure plate, thereby ensuring that the first micro-texture pressure plate can fully contact the turbine moving blade, thereby providing a certain basis for the subsequent analysis of how the micro-texture affects the dry friction vibration damping of the turbine moving blade.

[0032] The present invention designs a vibration component and a corresponding signal collection device, and by quickly sending out a vibration signal, it is possible to ensure that the turbine blades can quickly vibrate to a certain extent. At the same time, the strain gauge can also quickly collect the vibration signal and perform a rapid analysis.

[0033] The present invention can quickly clamp the turbine moving blades by designing a clamp assembly, thereby ensuring the efficiency of subsequent work; the measuring device provided by the present invention can provide a certain basis for subsequent micro-texturing to improve the dry friction state of the turbine moving blades.

[0034] The present invention characterizes the multi-scale and irregularity of the vibration response curve of the micro-textured blade by combining the wavelet transform characteristics with the holder index. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 This is an overall structural diagram of a turbine moving blade measuring device provided by an embodiment of the present invention;

[0037] Figure 2 It is a side view of a measuring device for turbine moving blades provided by an embodiment of the present invention;

[0038] Figure 3 This is a bottom structural diagram of a turbine moving blade measuring device provided by an embodiment of the present invention;

[0039] Figure 4 is a top view of a turbine moving blade measuring device provided by an embodiment of the present invention;

[0040] Figure 5 is a main structural diagram of a first loading seat provided by an embodiment of the present invention;

[0041] Figure 6 is a diagram of the installation structure of the first micro-textured press plate provided by an embodiment of the present invention;

[0042] Figure 7is a main structural diagram of a clamp assembly provided by an embodiment of the present invention;

[0043] Figure 8 is a main structural diagram of a vibration component provided by an embodiment of the present invention;

[0044] Fig. 9 is a first strain gauge installation circuit connection diagram provided by an embodiment of the present invention;

[0045] Fig.10 is a schematic diagram of micro-texture scale parameters provided by an embodiment of the present invention;

[0046] Fig.11 is a vibration frequency response curve diagram provided by an embodiment of the present invention;

[0047] Description of reference numerals: 1. base, 101. first strain gauge, 102. data collector, 103. main controller, 2. first longitudinal moving assembly, 201. first longitudinal bracket, 202. first guide rail, 3. micro-texture loading assembly, 301. first guide seat, 302. first hydraulic cylinder, 303. first hydraulic rod, 304. first mounting plate, 305. first mounting groove, 306. first loading seat, 3061. first mounting hole, 3062. first mounting rod, 3063. first force sensor, 3064. first guide sleeve, 3065. first fastening hole, 3066. first fastening pin, 3067. 067. first micro-texture mounting rod, 3068. first micro-texture pressure plate, 307. first fastening bolt, 4. second longitudinal moving assembly, 401. second hydraulic cylinder, 402. second hydraulic rod, 5. clamp assembly, 501. first fixed seat, 502. first clamp body, 503. first clamp slot, 504. first clamp hole, 505. first fastening rod, 6. vibration assembly, 601. second mounting plate, 602. second mounting slot, 603. first vibrator, 6031. first vibration fixing seat, 6032. second fastening bolt, 6033. first exciter, 6034. first excitation rod. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0049] Example 1

[0050] See also Figure 1A measuring device for turbine moving blades provided in an embodiment of the present invention comprises a base 1, a first longitudinal moving component 2 mounted on one side of the base 1, a micro-texture loading component 3 slidably mounted on the first longitudinal moving component 2, a second longitudinal moving component 4 mounted on the base 1, the second longitudinal moving component 4 being mounted on one side of the first longitudinal moving component 2, a clamp component 5 mounted on the base 1, the clamp component 5 being mounted between the second longitudinal moving components 4, the clamp component 5 being used to clamp turbine moving blades, and a vibration component 6 mounted on the second longitudinal moving component 4.

[0051] See also Figure 1-3 In some embodiments, the first longitudinal moving assembly 2 includes a first longitudinal bracket 201 mounted on the base 1 , and a first guide rail 202 is mounted on the first longitudinal bracket 201 .

[0052] See also Figure 1-5 In some embodiments, the micro-texture loading assembly 3 includes a first guide seat 301 slidably arranged on the first guide rail 202, and the micro-texture loading assembly 3 also includes a first hydraulic cylinder 302 installed on the base 1, and the output end of the first hydraulic cylinder 302 is provided with a first hydraulic rod 303, and the first hydraulic rod 303 is connected to the first guide seat 301, and the first hydraulic cylinder 302 pushes the first guide seat 301 to move on the first guide rail 202 through the first hydraulic rod 303, and a first mounting plate 304 is fixedly provided on the first guide seat 301, and a first mounting groove 305 is installed on the first mounting plate 304, and a first loading seat 306 is installed on the first mounting groove 305, and the first loading seat 306 is convex in design, and a first fastening bolt 307 is installed between the first loading seat 306 and the first mounting groove 305 for fastening the first loading seat 306 and the first mounting plate 304.

[0053] See also Figure 1-Figure 5In some embodiments, a first mounting hole 3061 is provided on the first loading seat 306, and a first mounting rod 3062 is threadedly provided in the first mounting hole 3061, a first force sensor 3063 is installed at one end of the first mounting rod 3062, a first guide sleeve 3064 is installed at one end of the first force sensor 3063, a first micro-texture mounting rod 3067 is provided in the first guide sleeve 3064, a first fastening hole 3065 is provided on the first guide sleeve 3064, a first fastening pin 3066 is provided between the first fastening hole 3065 and the first micro-texture mounting rod 3067, the first fastening pin 3066 is threadedly connected to the first fastening hole 3065, and the first fastening pin 3066 is used for fixing and clamping the first micro-texture mounting rod 3067 and the first guide sleeve 3064, and a first micro-texture pressing plate 3068 is installed at one end of the first micro-texture mounting rod 3067.

[0054] See also Figure 1-5 In some embodiments, the second longitudinal moving component 4 includes a second hydraulic cylinder 401 installed on the base 1, and the output end of the second hydraulic cylinder 401 is equipped with a second hydraulic rod 402, and the second hydraulic rod 402 is connected to the vibration component 6.

[0055] See also Figure 1 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 In some embodiments, the clamp assembly 5 includes a first fixed seat 501 installed between the second hydraulic cylinders 401, a first clamp body 502 is installed on the first fixed seat 501, a first clamp body 502 is provided with a first clamp groove 503, a first clamp body 502 is also provided with a first clamp hole 504, the first clamp hole 504 is provided with a first fastening rod 505 in cooperation with an internal thread transmission, and the first fastening rod 505 is used for fastening the turbine moving blades clamped in the first mounting groove 305.

[0056] See also Figure 6-Figure 9 In some embodiments, the vibration assembly 6 includes a second mounting plate 601 mounted on the second hydraulic rod 402 , and a second mounting groove 602 is provided on the second mounting plate 601 .

[0057] See also Figure 6-9In some embodiments, a first vibrator 603 is fixed on the second mounting groove 602, the first vibrator 603 includes a first vibration fixing seat 6031 installed on the second mounting groove 602, a second fastening bolt 6032 is installed between the first vibration fixing seat 6031 and the second mounting groove 602, a first exciter 6033 is installed on the first vibration fixing seat 6031, and a first excitation rod 6034 is installed at one end of the first exciter 6033.

[0058] See also Figure 1-3 In some embodiments, a first strain gauge 101 is installed on the surface of the turbine moving blade, the first strain gauge 101 is electrically connected to a data collector 102, and the data collector 102 is electrically connected to a main controller 103.

[0059] Specific working process:

[0060] First, clamp the turbine blade into the clamp assembly 5, clamp the bottom of the turbine blade into the first clamp body 502, and the first clamp groove 503 is adapted to the bottom of the turbine blade. At the same time, the first fastening rod 505 is moved in the first mounting hole 504 through threaded transmission until one end of the first fastening rod 505 contacts the bottom of the turbine blade, thereby clamping the turbine blade.

[0061] After the clamping process is completed, the first hydraulic cylinder 302 drives the first hydraulic rod 303 to move, and then the first hydraulic rod 303 drives the first guide seat 301 to move on the first guide rail 202. After the movement is completed, a suitable first micro-texture pressure plate 3068 is selected according to the micro-texture scale of the surface of the turbine blade crown. The surface array of the first micro-texture pressure plate 3068 is provided with micro-textures. The micro-textures of the turbine blade crown surface and the surface of the first micro-texture pressure plate 3068 are both formed by laser processing. The first micro-texture mounting rod 3067 is installed in the first guide sleeve 3064, and is moved in the first fastening hole 3065 through the first fastening pin 307, and then the lower surface of the first fastening pin 307 provides a certain fastening force to the first micro-texture mounting rod 3067.

[0062] Then the first mounting rod 3062 rotates in the first mounting hole 3061, pushing the first micro-textured pressure plate 3068 to press the surface of the turbine blade crown. At the same time, the first force sensor 3063 receives the pressure signal transmitted by the first guide sleeve 3064. The model of the first force sensor 3063 is DJYZ-15. One end of the first force sensor 3063 is electrically connected to the main controller 103. The main controller 103 is an industrial computer. The first force sensor 3063 transmits the detected pressure signal to the main controller 103, and then adjusts the rotation distance of the first mounting rod 3062 in the first mounting hole 3061 in real time.

[0063] After the load of the first micro-texture pressure plate 3068 is applied, the second hydraulic cylinder 401 is started, driving the second hydraulic rod 402 to move, and then the second hydraulic rod 402 drives the second mounting plate 601 to move up and down, and the first vibration fixing seat 6031 is fixed on the second mounting plate 601 by the fastening connection of the second fastening bolt 6032 and the second mounting groove 602, and then the first excitation rod 6034 contacts the surface of the turbine moving blade, and the first exciter 6033 is started to transmit an excitation signal of a certain amplitude and frequency, which is transmitted to the surface of the turbine moving blade through the first excitation rod 6034.

[0064] At the same time, when the surface of the turbine blade is excited, the vibration frequency signal of the turbine blade is collected by the first strain gauge 101 through the data acquisition device 102, and analyzed and processed by the main controller 103. At the same time, due to the existence of a certain dry friction damping effect on the first micro-texture pressure plate 3068 and the surface of the turbine blade crown, the device can further analyze the effect of the micro-texture scale parameters on the amplitude signal of the turbine blade under the above-mentioned dry friction damping effect, providing further basis for future experimental research by scientific and technological workers.

[0065] Example 2

[0066] A measuring method using a turbine moving blade measuring device is characterized by comprising the following steps:

[0067] Step 1: First, determine the size of the first micro-texture platen 3068 according to the size of the micro-texture on the surface of the turbine blade crown. The surface micro-texture size parameters include diameter d and spacing w. The first micro-texture platen 3068 size parameters include length D and width B.

[0068] The scale parameters of the first micro-textured plate 3068 must satisfy D>5d and D>5w, and at the same time satisfy B>5d and B>5w

[0069] Step 2: The first micro-texture pressure plate 3068 presses the side of the turbine blade crown, and the first exciter 6033 is started to drive the first excitation rod 6034 to vibrate on the surface of the turbine blade;

[0070] Step 3: The data collector 102 collects the vibration frequency response curve of the turbine blade surface through the first strain gauge 101.

[0071] like Fig.11 As shown in the figure, the collected vibration frequency curve z(x) is characterized and analyzed using the following method

[0072] The first step is to perform wavelet transform on the surface vibration frequency curve z(x) according to the formula:

[0073]

[0074] Where z(x) is the vibration frequency curve, is the wavelet function, n is the translation parameter, m is the scale parameter, is the high frequency wavelet coefficient;

[0075] The number of wavelet decompositions is 8, where D1 represents the high frequency coefficients decomposed once, D2 represents the high frequency coefficients decomposed twice, and so on.

[0076] Table 1 High frequency coefficients of wavelet transform of vibration frequency curve signal

[0077] D1 D2 D3 D4 D5 D6 D7 D8 0.8902 0.4231 0.0971 0.1670 -0.6723 -1.6732 -1.5722 3.2132 0.4723 2.1223 -0.7132 3.8541 8.1223 5.0134 -25.412 30.3245 -0.1223 0.3855 4.2132 11.6732 -21.233 -12.128 19.674 24.679 -0.1785 1.7543 0.9393 -8.9071 1.5672 40.9871 -9.1281 -7.2131 …… …… …… …… …… …… …… 1.8231 0.4523 -1.7653 10.2321 -9.7812 -0.8729 1.0132 4.2391 0.3786 0.3471 -12.231 4.232 5.1212 -13.212 -14.412 0.3988 2.9132 2.125 -1.7641 -9.6723 9.751 -3.121

[0078] The second step is based on the formula:

[0079]

[0080] Get the high-frequency wavelet coefficients after transformation The relationship between the decomposition scale m and the slope α is obtained by linear fitting, and then the slope α=1.1541.

[0081] The third step is based on the formula:

[0082]

[0083] We can then obtain Q=1.9245.

[0084] The above formula is obtained by combining the Holder index with the second-step formula transformation. The Holder index reflects the local degree index and the local similarity, and thus the self-similarity of the above data can be analyzed. At the same time, the wavelet transform decomposes the data of the vibration response curve of the friction performance of the micro-textured surface multiple times, and the high-frequency coefficient reflects the prominent characteristics of the data. While analyzing the multi-scale of the above data, the randomness and irregularity are also analyzed. Finally, by solving Q, the multi-scale, randomness and irregularity of the vibration curve of the friction performance of the micro-textured surface can be analyzed.

[0085] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0086] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A measuring device for turbine moving blades, characterized in that: include: Base (1); A first longitudinal moving assembly (2) is mounted on one side of the base (1); A micro-texture loading component (3) is slidably disposed on the first longitudinal moving component (2); A second longitudinal moving assembly (4) is mounted on the base (1), and the second longitudinal moving assembly (4) is mounted on one side of the first longitudinal moving assembly (2); A clamp assembly (5) is mounted on the base (1), the clamp assembly (5) is mounted between the second longitudinal moving assemblies (4), and the clamp assembly (5) is used to clamp turbine blades; A vibration component (6) is mounted on the second longitudinal moving component (4).

2. A turbine blade measuring device according to claim 1, characterized in that: The first longitudinal moving assembly (2) comprises a first longitudinal bracket (201) mounted on the base (1), and a first guide rail (202) is mounted on the first longitudinal bracket (201).

3. A turbine blade measuring device according to claim 2, characterized in that: The micro-texture loading assembly (3) comprises a first guide seat (301) slidably arranged on the first guide rail (202), and the micro-texture loading assembly (3) further comprises a first hydraulic cylinder (302) mounted on the base (1), an output end of the first hydraulic cylinder (302) is provided with a first hydraulic rod (303), the first hydraulic rod (303) is connected to the first guide seat (301), and the first hydraulic cylinder (302) pushes the first guide seat (301) on the first guide rail (202) through the first hydraulic rod (303). 202); a first mounting plate (304) is fixedly provided on the first guide seat (301), and a first mounting groove (305) is provided on the first mounting plate (304); a first loading seat (306) is provided on the first mounting groove (305), and the first loading seat (306) is convex in design, and a first fastening bolt (307) is provided between the first loading seat (306) and the first mounting groove (305) for fastening the first loading seat (306) and the first mounting plate (304).

4. A turbine blade measuring device according to claim 3, characterized in that: The first loading seat (306) is provided with a first mounting hole (3061), the first mounting hole (3061) is internally threaded with a first mounting rod (3062), one end of the first mounting rod (3062) is installed with a first force sensor (3063), one end of the first force sensor (3063) is installed with a first guide sleeve (3064), the first guide sleeve (3064) is provided with a first micro-texture mounting rod (3067), and the first guide sleeve (3064) is provided with a first fastening A first micro-texture mounting rod (3064) is provided with a first fastening pin (3066) between the first fastening hole (3065) and the first micro-texture mounting rod (3067); the first fastening pin (3066) is threadedly connected to the first fastening hole (3065); the first fastening pin (3066) is used for fixing and clamping the first micro-texture mounting rod (3067) and the first guide sleeve (3064); and a first micro-texture pressing plate (3068) is provided at one end of the first micro-texture mounting rod (3067).

5. A turbine blade measuring device according to claim 4, characterized in that: The second longitudinal moving assembly (4) comprises a second hydraulic cylinder (401) mounted on the base (1), a second hydraulic rod (402) being mounted on the output end of the second hydraulic cylinder (401), and the second hydraulic rod (402) being connected to a vibration assembly (6).

6. A turbine blade measuring device according to claim 5, characterized in that: The clamp assembly (5) includes a first fixed seat (501) installed between the second hydraulic cylinders (401), a first clamp body (502) is installed on the first fixed seat (501), a first clamp groove (503) is provided on the first clamp body (502), a first clamp hole (504) is also provided on the first clamp body (502), a first fastening rod (505) is provided in the first clamp hole (504) through internal thread transmission, and the first fastening rod (505) is used for fastening the turbine moving blades clamped in the first installation groove (305).

7. A turbine blade measuring device according to claim 6, characterized in that: The vibration assembly (6) comprises a second mounting plate (601) mounted on the second hydraulic rod (402); the second mounting plate (601) is provided with a second mounting groove (602); a first vibrator (603) is fixedly provided on the second mounting groove (602); the first vibrator (603) comprises a first vibration fixing seat (6031) mounted on the second mounting groove (602); a second fastening bolt (6032) is provided between the first vibration fixing seat (6031) and the second mounting groove (602); a first vibration exciter (6033) is provided on the first vibration fixing seat (6031); a first excitation rod (6034) is provided at one end of the first vibration exciter (6033).

8. A turbine blade measuring device according to claim 7, characterized in that: A first strain gauge (101) is installed on the surface of the turbine moving blade. The first strain gauge (101) is electrically connected to a data collector (102). The data collector (102) is electrically connected to a main controller (103).

9. A method for measuring turbine moving blades, using a measuring device for turbine moving blades as claimed in any one of claims 1 to 9, characterized in that: include: The first step: firstly, determining the size of the first micro-texture pressure plate (3068) according to the size of the micro-texture on the surface of the turbine blade crown, wherein the scale parameters of the surface micro-texture include a diameter d and a spacing w, and the scale parameters of the first micro-texture pressure plate (3068) include a length D and a width B; The first micro-textured platen (3068) has a scale parameter that satisfies D>5d and D>5w, and B>5d and B>5w; Step 2: The first micro-textured pressure plate (3068) presses the side surface of the turbine blade crown, and the first exciter (6033) is started to drive the first excitation rod (6034) to vibrate on the surface of the turbine blade; Step 3: Using the first strain gauge (101) and the data collector (102), a vibration frequency response curve of the surface of the turbine blade is collected; Step 4: Analyze the vibration frequency response curve.

10. A turbine moving blade measurement method according to claim 9, characterized in that: The fourth step is to analyze the vibration frequency response curve The following steps are involved: The first step is to perform wavelet transform on the surface vibration frequency curve z(x) according to the formula: Where z(x) is the vibration frequency curve, is the wavelet function, n is the translation parameter, m is the scale parameter, is the high frequency wavelet coefficient; The second step is based on the formula: Get the high-frequency wavelet coefficients after transformation The relationship with the decomposition scale m is used to obtain the slope α; The third step is based on the formula: Where Q is the parameter characterizing the vibration frequency curve.

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