Blade semi-chord width detection device

Abstract

The application relates to the technical field of aero-engine blade detection, in particular to a blade half-chord width detection device which comprises a bottom plate, a positioning assembly, a clamping assembly and a detection assembly; the positioning assembly is fixedly connected with the bottom plate; the clamping assembly is fixedly connected with the bottom plate; a horizontal first reference surface is arranged on the bottom plate; the bottom surface of the detection assembly is in abutment with the first reference surface; the positioning assembly, the clamping assembly or the bottom plate is provided with a vertical second reference surface; the side surface of the detection assembly is in abutment with the second reference surface; a first detection surface and a second detection surface are arranged on the top of the detection assembly; and the first detection surface and the second detection surface have a preset height difference. The positioning assembly and the clamping assembly are arranged on the bottom plate, the blade is accurately positioned and clamped and fixed, and the blade is detected by the measuring assembly to determine whether the blade is qualified. The device is simple and convenient to operate, reliable in positioning, accurate in detection and high in detection efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aero-engine blade detection, and particularly relates to a blade half-chord width detection device. BACKGROUND

[0002] The geometric shape of a blade includes length, thickness, twist angle and chord width size control, the half-chord width of the blade refers to the distance from the center line of the blade to the edge of the blade, and is usually represented by b, in the process of blade design and manufacturing, the half-chord width is a very important parameter, which directly affects the performance of the blade, and through reasonable detection of the half-chord width, the performance and service life of the blade can be evaluated, the qualified rate of the blade can be improved, the turbine air pressure resistance can be reduced, the substandard products can be controlled to flow into the next process, and the reliability of the blade can be improved. The traditional measurement method is three-coordinate detection, and the three-coordinate measuring instrument is rarely used in the production site, and when measuring, complex processes, calculation, programming and other operations are often required, which is time-consuming and labor-consuming. It is not suitable for batch detection on site. Therefore, a measurement device with accurate measurement, intuitive, high efficiency and reliable positioning is needed. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a blade half-chord width detection device with accurate measurement, intuitive, high efficiency and reliable positioning.

[0004] The technical solution of the present application to solve the above technical problem is as follows: a blade half-chord width detection device, comprising: a bottom plate, a positioning assembly, a clamping assembly and a detection assembly, the positioning assembly and the bottom plate are fixedly connected, the clamping assembly and the bottom plate are fixedly connected, a horizontal first reference surface is arranged on the bottom plate, the bottom surface of the detection assembly and the first reference surface are in abutment, the positioning assembly, the clamping assembly or the bottom plate has a vertical second reference surface, the side surface of the detection assembly and the second reference surface are in abutment, a first detection surface and a second detection surface are arranged on the top of the detection assembly, and the first detection surface and the second detection surface have a preset height difference.

[0005] The present application has the beneficial effects that: by arranging the positioning assembly and the clamping assembly on the bottom plate, the blade can be accurately positioned and clamped and fixed, the horizontal first reference surface serves as the bottom reference, the detection assembly is in abutment with the first reference surface, and the vertical second reference surface serves as the side reference, whether the half-chord width of the blade is qualified is detected, and whether the blade is qualified is determined. When the first detection surface passes the bottom end of the blade leading edge and the second detection surface cannot pass, it is determined that the blade is qualified, and when the first detection surface passes the bottom end of the blade leading edge and the second detection surface can also pass, it is determined that the blade is unqualified. The device is simple and convenient to operate, reliable in positioning, accurate in detection, and improves the detection efficiency.

[0006] On the basis of the above technical scheme, the application can be further improved as follows.

[0007] Further, the detection assembly is provided with a first groove on the top, and the top of both sides of the first groove is provided with the first detection surface and the second detection surface.

[0008] The beneficial effect of the above further scheme is that the first groove 17 is arranged on the top of the detection assembly, so that the measurement position can be more intuitively judged.

[0009] Further, the bottom plate is further provided with two strips, and the upper end surface of the two strips is the first reference surface.

[0010] The beneficial effect of the above further scheme is that the strips are arranged on both sides of the bottom plate, and the upper end surface of the strip is used as the first reference surface, so that the detection is more accurate.

[0011] Further, the positioning assembly is provided with a first positioning point, a second positioning point, a third positioning point, a fourth positioning point, a fifth positioning point and a sixth positioning point, and the first positioning point, the second positioning point, the third positioning point, the fourth positioning point, the fifth positioning point and the sixth positioning point are respectively used for one-to-one abutting with the blade first positioning point of the blade tenon root extension, the blade second positioning point of the blade tenon root extension, the blade third positioning point of the blade back, the blade fourth positioning point of the blade body leading edge, the blade fifth positioning point of the blade body leading edge and the blade sixth positioning point of the inner flow channel of the blade crown.

[0012] The beneficial effect of the above further scheme is that six positioning points are arranged on the positioning assembly and one-to-one abut with the six positioning points on the blade, so that the positioning of the blade on the detection device is more accurate.

[0013] Further, the positioning assembly comprises a first positioning support, a second positioning support, a first positioning pin, a second positioning pin and a third positioning pin, one end of the first positioning support is fixedly connected with one end of the bottom plate, the other end of the first positioning support is provided with the first positioning pin and the second positioning pin, one end of the second positioning support is fixedly connected with the other end of the bottom plate, the other end of the second positioning support is provided with the third positioning pin on one side, the first positioning support is further provided with a first blade edge positioning block, one end of the first blade edge positioning block is fixedly connected with the first positioning support, the second positioning support is provided with a second blade edge positioning block, one end of the second blade edge positioning block is fixedly connected with the second positioning support; one end of the first positioning pin has the first positioning point, one end of the second positioning pin has the second positioning point, the other end of the second positioning support is provided with a notch, the bottom of the notch has the third positioning point, the other end of the first blade edge positioning block has the fourth positioning point, the other end of the second blade edge positioning block has the fifth positioning point, and one end of the third positioning pin has the sixth positioning point.

[0014] The beneficial effect of the above further scheme is that by setting corresponding positioning points on the specific structures of the first positioning support and the second positioning support, the corresponding positions of the irregular blade are one-to-one corresponding, ensuring accurate positioning and limiting the movement and rotation of the blade in each direction.

[0015] Further, the clamping assembly comprises a third support and a pressing structure, one end of the third support is fixedly connected with the bottom plate, and the pressing structure is arranged at the other end of the third support and is in sliding connection with the third support.

[0016] The beneficial effect of the above further scheme is that by setting the pressing structure on the third support, the blade is further clamped, so that the blade is more stable during clamping, and the detection work can be smoothly carried out.

[0017] Further, the pressing structure comprises a pull rod, a sliding plate, a pressing block and an adjusting assembly, the pull rod is in sliding connection with the third support, one end of the sliding plate is fixedly connected with the pull rod, and the other end of the sliding plate is in rotary connection with the pressing block.

[0018] The beneficial effect of the above further scheme is that by sliding connection of the pull rod and the third support, after clamping the blade, the pull rod is pulled, the sliding plate is moved by the pull rod, and then by loosening the pull rod, the pressing block is in contact with the blade under the action of the adjusting assembly, and the blade is adaptively pressed.

[0019] Further, a through hole is formed in the other end of the third support, one end of the pull rod passes through the through hole and is connected with the adjusting assembly.

[0020] The beneficial effect of the further scheme is that the through hole is arranged on the third support, the one end of the pull rod is conveniently penetrated through the through hole, and the pull rod is connected with the adjusting assembly, so that the adjusting of the pressing structure is facilitated, and the pressing of the blade is facilitated.

[0021] Further, the adjusting assembly comprises a spring and a nut, one end of the pull rod is provided with a thread, the spring is sleeved on the one end of the pull rod, and the nut is threadedly connected with the one end of the pull rod, and the nut, the spring and the third support are sequentially abutted.

[0022] The beneficial effect of the further scheme is that the spring is sleeved on the one end of the pull rod, and is fixed through the nut, so that the spring is prevented from falling out.

[0023] Further, the pressing structure further comprises a first connecting pin, the pull rod is provided with a second groove, the sliding plate is placed in the second groove, a first connecting hole is arranged in a direction perpendicular to the second groove, the first connecting hole and the second groove are communicated, and the first connecting pin penetrates through the first connecting hole and the sliding plate, and the sliding plate and the pull rod are fixedly connected.

[0024] The beneficial effect of the further scheme is that the second groove is arranged on the pull rod to place the sliding plate, the first connecting hole is arranged on the pull rod in a direction perpendicular to the second groove, the sliding plate and the pull rod are fixed through the first connecting pin, the sliding rod and the pull rod move as a whole, and then the pressing block connected with the sliding block is driven to move, so that the pressing of the blade is realized. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a working schematic view of the blade half-chord width detection device of the present application.

[0026] Figure 2 It is a front view of the blade half-chord width detection device of the present application.

[0027] Figure 3 It is a side view of the blade half-chord width detection device of the present application.

[0028] Figure 4 It is a top view of the blade half-chord width detection device of the present application.

[0029] Figure 5 It is a schematic view of the half-chord width detection assembly of the present application.

[0030] Figure 6 It is a schematic view of the blade half-chord width design measurement requirement b value of the present application.

[0031] Figure 7 It is a schematic view of the blade structure of the present application.

[0032] Figure 8This is a schematic diagram of the blade positioning points of the present invention;

[0033] Figure 9 This is a partially enlarged view of the first cutting edge positioning block of the blade half-chord width detection device of the present invention.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. Base plate; 2. First positioning pin; 3. First positioning support; 4. Second positioning pin; 5. Third support; 6. Second positioning support; 7. Third positioning pin; 8. Pressure block; 9. Slide plate; 10. Pull rod; 11. Handle; 12. Test template; 13. First cutting edge positioning block; 14. Second cutting edge positioning block; 15. Strip; 17. First groove; 18. Spring; 19. Nut; 26. Pin; 27. First connecting pin; 100. Leaf 101. Leaf tenon; 102. Leaf tenon root extension; 103. Leaf blade leading edge; 104. Leaf blade rear edge; 105. Leaf blade; 106. Leaf crown; 110. First inspection surface; 120. Second inspection surface; 1001. Leaf blade first positioning point; 1002. Leaf blade second positioning point; 1003. Leaf blade third positioning point; 1004. Leaf blade fourth positioning point; 1005. Leaf blade fifth positioning point; 1006. Leaf blade sixth positioning point. Detailed Implementation

[0036] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0037] like Figure 6 As shown, the half-chord width of a blade is usually represented by b, which is the distance from the centerline of the blade to the edge of the blade.

[0038] like Figure 7 The diagram shows a schematic of the blade structure. The main parts involved include the blade tenon 101 at one end of the blade 100, the leaf crown 106 and the leaf body 105 at the other end of the blade 100. At one end of the blade tenon 101, there is an extension section called the blade tenon root extension section 102. The upper and lower edges of the leaf body 105 are the leading edge 103 and the rear edge 104 of the leaf body, respectively. The pot-shaped and back-shaped directions of the leaf body 105 are the leaf pot and the leaf back, respectively.

[0039] like Figure 8 The diagram shows six positioning points for the blade: the first positioning point 1001 located at the tenon extension section 102, the second positioning point 1002 located at the tenon extension section 102, the third positioning point 1003 on the back of the blade 105, the fourth positioning point 1004 on the leading edge of the blade 103, the fifth positioning point 1005 on the leading edge of the blade 103, and the sixth positioning point 1006 in the inner flow channel of the crown 106.

[0040] likeFigures 1-5 The embodiment shown provides a blade half-chord width detection device, which comprises a base plate 1, a positioning assembly, a clamping assembly and a detection assembly, the positioning assembly is fixedly connected with the base plate 1, the clamping assembly is fixedly connected with the base plate 1, a horizontal first reference surface is arranged on the base plate 1, the bottom surface of the detection assembly abuts against the first reference surface, the positioning assembly, the clamping assembly or the base plate 1 has a vertical second reference surface, the side surface of the detection assembly abuts against the second reference surface, a first detection surface 110 and a second detection surface 120 are arranged on the top of the detection assembly, and the first detection surface 110 and the second detection surface 120 have a preset height difference.

[0041] The positioning assembly and the clamping assembly are arranged on the base plate 1, so that the blade 100 is accurately positioned and clamped and fixed, the horizontal first reference surface serves as a bottom reference, the detection assembly abuts against the first reference surface, and the vertical second reference surface serves as a side reference, whether the blade 100 is qualified in terms of the half-chord width is detected, and whether the blade 100 is qualified is determined. When the first detection surface 110 passes through the bottom end of the blade body leading edge 103 and the second detection surface 120 cannot pass through, it is determined that the blade 100 is qualified, and when the first detection surface 110 passes through the bottom end of the blade body leading edge 103 and the second detection surface 120 can pass through, it is determined that the blade 100 is unqualified. The device is simple and convenient to operate, reliable in positioning, accurate in detection, and improves the detection efficiency.

[0042] Specifically, the detection assembly is a detection template 12.

[0043] Specifically, the detection template 12 has different sizes according to different detection positions of the blade 100.

[0044] Specifically, during detection, the first detection surface 110 is a surface that can pass through the bottom end of the blade body leading edge 103, and the second detection surface 120 is a determination surface, that is, when the second detection surface 120 cannot pass through the bottom end of the blade body leading edge 103, the blade 100 is qualified, and when the second detection surface 120 can pass through the bottom end of the blade body leading edge 103, the blade 100 is unqualified.

[0045] On the basis of the above technical scheme, the top of the detection assembly is provided with a first groove 17, and the top of both sides of the first groove 17 has the first detection surface 110 and the second detection surface 120.

[0046] The first groove 17 is arranged on the top of the detection assembly, so that the measurement position can be more intuitively determined.

[0047] Specifically, the width of the first groove 17 is 1 mm.

[0048] On the basis of the above technical scheme, two board strips 15 are further included, the two board strips 15 are fixedly connected with two sides of the bottom plate 1, and upper end faces of the two board strips 15 form the first reference surface.

[0049] By arranging the board strips 15 on the two sides of the bottom plate 1 and taking the upper end faces of the board strips 15 as the first reference surface, the accuracy of the upper end faces of the board strips 15 is higher, so that the detection is more accurate.

[0050] Specifically, the upper end face of the board strip 15 is higher than the upper end face of the bottom plate 1.

[0051] Specifically, the preset height difference between the first detection surface 110 and the second detection surface 120 is 2K (K represents the absolute value of the upper deviation or lower deviation of the half-chord width of the blade).

[0052] In a specific example, as shown in Figure 5 the half-chord width b of the blade is ±0.15, the height from the bottom end of the detection template 12 to the first detection surface 110 is B1, and the height from the bottom end of the detection template 12 to the second detection surface 120 is B2, so that B2-B1=0.3.

[0053] On the basis of the above technical scheme, the positioning assembly is provided with a first positioning point, a second positioning point, a third positioning point, a fourth positioning point, a fifth positioning point and a sixth positioning point, and the first positioning point, the second positioning point, the third positioning point, the fourth positioning point, the fifth positioning point and the sixth positioning point are respectively used to abut one-to-one with a blade first positioning point 1001 of the blade tenon stretch root segment 102, a blade second positioning point 1002 of the blade tenon stretch root segment 102, a blade third positioning point 1003 of the blade back, a blade fourth positioning point 1004 of the blade body leading edge 103, a blade fifth positioning point 1005 of the blade body leading edge 103 and a blade sixth positioning point 1006 in the inner flow channel of the blade crown 106.

[0054] By arranging six positioning points on the positioning assembly and abutting one-to-one with the six positioning points on the blade 100, it is ensured that the blade 100 is positioned more accurately on the detection device.

[0055] On the basis of the above technical scheme, the positioning assembly comprises a first positioning support 3, a second positioning support 6, a first positioning pin 2, a second positioning pin 4 and a third positioning pin 7, one end of the first positioning support 3 is fixedly connected with one end of the bottom plate 1, the other end of the first positioning support 3 is provided with the first positioning pin 2 and the second positioning pin 4, one end of the second positioning support 6 is fixedly connected with the other end of the bottom plate 1, one side of the other end of the second positioning support 6 is provided with the third positioning pin 7, the first positioning support 3 is further provided with a first blade edge positioning block 13, one end of the first blade edge positioning block 13 is fixedly connected with the first positioning support 3, the second positioning support 6 is provided with a second blade edge positioning block 14, one end of the second blade edge positioning block 14 is fixedly connected with the second positioning support 6; one end of the first positioning pin 2 has the first positioning point, one end of the second positioning pin 4 has the second positioning point, the other end of the second positioning support 6 is provided with a notch, the bottom of the notch has the third positioning point, the other end of the first blade edge positioning block 13 has the fourth positioning point, the other end of the second blade edge positioning block 14 has the fifth positioning point, one end of the third positioning pin 7 has the sixth positioning point.

[0056] By setting corresponding positioning points on the specific structures of the first positioning support 3 and the second positioning support 6, the corresponding positions of the irregular blade 100 are one-to-one corresponding, so that the positioning is accurate and the movement and rotation of the blade 100 in each direction are limited.

[0057] Specifically, hard alloy is embedded at the top end of the first blade edge positioning block 13 and the second blade edge positioning block 14, so as to avoid wear of this part due to long-term positioning and detection of the blade 100, thereby ensuring the accuracy of positioning and detection of the blade 100.

[0058] In a specific example, as shown in Figure 9 the top end of the first blade edge positioning block 13 is embedded with hard alloy, the blade edge width is 1mm, the chamfer is 45°, and the chamfer direction is away from the second reference surface, which is beneficial to reduce the positioning error and make the positioning point closer to the theoretical state, so that the detection of the blade 100 is more accurate.

[0059] On the basis of the above technical scheme, the clamping assembly comprises a third support 5 and a pressing structure, one end of the third support 5 is fixedly connected with the bottom plate 1, and the pressing structure is arranged at the other end of the third support 5 and is in sliding connection with the third support 5.

[0060] By setting the pressing structure on the third support 5, the blade 100 is further clamped, so that the blade 100 is clamped more stably, and the detection work is ensured to be carried out smoothly.

[0061] On the basis of the above technical scheme, the pressing structure comprises a pull rod 10, a sliding plate 9, a pressing block 8 and an adjusting assembly, the pull rod 10 is slidably connected with the third support 5, one end of the sliding plate 9 is fixedly connected with the pull rod 10, and the other end of the sliding plate 9 is rotatably connected with the pressing block 8.

[0062] The pull rod 10 is slidably connected with the third support 5, and then after clamping the blade 100, the pull rod 10 is pulled to drive the sliding plate 9 to move, and then the pull rod 10 is loosened, so that the pressing block 8 contacts the blade 100 under the action of the adjusting assembly and self-adaptively presses the blade 100.

[0063] Specifically, a third groove is arranged at the other end of the sliding plate 9, one end of the pressing block 8 is provided with a second connecting hole, and the pin 26 passes through the second connecting hole, the sliding plate 9 and the pressing block 8 to connect the sliding plate 9 and the pressing block 8.

[0064] Specifically, the pin 26 is in clearance fit with the sliding plate 9 and the pressing block 8, so that the pressing block 8 and the sliding plate 9 can rotate around the pin 26 to adapt to the profile of the blade 105.

[0065] Specifically, the other end of the pressing block 8 is provided with an arc surface to adapt to the corresponding position of the blade 100.

[0066] Specifically, the third groove is a waist-shaped groove, which is helpful for adjusting the up-down position of the pressing block 8 in a small range, so as to better adapt to the blade 100.

[0067] On the basis of the above technical scheme, a through hole is formed at the other end of the third support 5, and one end of the pull rod 10 passes through the through hole and is connected with the adjusting assembly.

[0068] The through hole is formed in the third support 5, so that one end of the pull rod 10 passes through the through hole and the pull rod 10 is connected with the adjusting assembly, thereby facilitating the adjustment of the pressing structure to press the blade 100.

[0069] On the basis of the above technical scheme, the adjusting assembly comprises a spring 18 and a nut 19, one end of the pull rod 10 is provided with a thread, the spring 18 is sleeved on one end of the pull rod 10, the nut 19 is threadedly connected with one end of the pull rod 10, and the nut 19, the spring 18 and the third support 5 are sequentially abutted.

[0070] The spring 18 is sleeved on one end of the pull rod 10 and fixed by the nut 19, so as to prevent the spring 18 from falling out.

[0071] Specifically, a handle 11 is further arranged at the other end of the pull rod 10.

[0072] The handle 11 is arranged, so that the pull rod 10 is more conveniently pulled.

[0073] On the basis of the above technical solutions, the pressing structure further comprises a first connecting pin 27, the pull rod 10 is provided with a second groove, the sliding plate 9 is placed in the second groove, a first connecting hole is opened in a direction perpendicular to the second groove, the first connecting hole and the second groove are communicated, and the first connecting pin 27 penetrates through the first connecting hole and the sliding plate 9 and fixedly connects the sliding plate 9 and the pull rod 10.

[0074] By opening the second groove on the pull rod 10 for placing the sliding plate 9 and opening the first connecting hole on the pull rod 10 in a direction perpendicular to the second groove, the sliding plate 9 and the pull rod 10 are fixed through the first connecting pin 27, so that the sliding plate 9 and the pull rod 10 move as a whole and further drive the pressing block 8 connected with the sliding plate 9 to move, thereby realizing the pressing of the blade 100.

[0075] In one specific example, as shown in Figure 3 In theory, after the blade 100 is clamped, the center line of the blade 100 coincides with the theoretical center line (i.e. Y line), the distance from the first reference surface to the center line is L (L is known, i.e. determined by the tool designer), and the half-chord width size of the blade 100 is b (the half-chord width of the theoretical blade), so that the size of the detection template 12 is designed according to B = L-b, and since the blade 100 has an allowable error, the top end of the detection template 12 is designed as a stepped surface, i.e. a first detection surface 110 and a second detection surface 120, as shown in Figure 5 The distance from the first detection surface 110 to the bottom end of the detection template 12 is B1, the distance from the second detection surface 120 to the bottom end of the detection template 12 is B2, and the difference between B2 and B1 is the maximum allowable error of the blade 100. As shown in Figure 1 When detecting, the blade 100 is placed on the detection device, and the positioning points of the blade 100 and the detection device are one-to-one corresponding and abutted, and the blade 100 is clamped and fixed by adjusting the clamping assembly. The detection template 12 is placed at the position to be detected, and Figure 1 Taking one of the detection templates 12 as an example, the detection template 12 takes the upper end surface of the board strip 15 as the first reference surface and one side of the third support 5 as the second reference surface, the detection template 12 is pushed, the first detection surface 110 passes through the bottom end of the blade body leading edge 103, and if the second detection surface 120 cannot pass through the bottom end of the blade body leading edge 103, the blade 100 is qualified, and if the second detection surface 120 can pass through the bottom end of the blade body leading edge 103, the blade 100 is unqualified.

[0076] The blade half-chord width detection device limits the degree of freedom of the blade 100 to be detected through the accurate design of the positioning assembly, the reasonable selection of the positioning mode, and the accurate and ingenious design of the clamping assembly, so as to ensure that the blade 100 can be accurately and correctly placed in the detection device. The detection sample plate 12 is designed with reasonable size conversion, so that the blade half-chord width can be more accurately and quickly detected to ensure the performance and reliability of the blade. The blade half-chord width detection device is simple and convenient to operate, reliable in positioning, accurate in detection, and effectively improves the detection efficiency.

[0077] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0078] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0079] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0080] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature is "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0081] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0082] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A blade semi-span detection device, characterized by, Comprise: The bottom plate (1), the positioning assembly, the clamping assembly and the detection assembly are fixedly connected, a horizontal first reference surface is arranged on the bottom plate (1), the bottom surface of the detection assembly abuts against the first reference surface, the positioning assembly, the clamping assembly or the bottom plate (1) has a vertical second reference surface, the side surface of the detection assembly abuts against the second reference surface, a first detection surface (110) and a second detection surface (120) are arranged on the top of the detection assembly, and the first detection surface (110) and the second detection surface (120) have a preset height difference; first, second, third, fourth, fifth and sixth positioning points are arranged on the positioning assembly, and the first, second, third, fourth, fifth and sixth positioning points are respectively used for abutting against a blade first positioning point (1001) of a blade tenon root extension, a blade second positioning point (1002) of the blade tenon root extension, a blade third positioning point (1003) of a blade back, a blade fourth positioning point (1004) of a blade body leading edge, a blade fifth positioning point (1005) of the blade body leading edge and a blade sixth positioning point (1006) of a blade crown inner flow channel one by one; the positioning assembly comprises a first positioning support (3), a second positioning support (6), a first positioning pin (2), a second positioning pin (4) and a third positioning pin (7), one end of the first positioning support (3) is fixedly connected with one end of the bottom plate (1), the other end of the first positioning support (3) is provided with the first positioning pin (2) and the second positioning pin (4), one end of the second positioning support (6) is fixedly connected with the other end of the bottom plate (1), and the other end of the second positioning support (6) is provided with the third positioning pin (7) on one side; a first blade edge positioning block (13) is further arranged on the first positioning support (3), one end of the first blade edge positioning block (13) is fixedly connected with the first positioning support (3), a second blade edge positioning block (14) is arranged on the second positioning support (6), and one end of the second blade edge positioning block (14) is fixedly connected with the second positioning support (6); one end of the first positioning pin (2) has the first positioning point, one end of the second positioning pin (4) has the second positioning point, a notch is formed in the other end of the second positioning support (6), the bottom of the notch has the third positioning point, the other end of the first blade edge positioning block (13) has the fourth positioning point, the other end of the second blade edge positioning block (14) has the fifth positioning point, and one end of the third positioning pin (7) has the sixth positioning point; the clamping assembly comprises a third support (5) and a pressing structure, one end of the third support (5) is fixedly connected with the bottom plate (1), and the pressing structure is arranged at the other end of the third support (5) and is in sliding connection with the third support (5).The pressing structure comprises a pull rod (10), a sliding plate (9), a pressing block (8) and an adjusting assembly, the pull rod (10) and the third support (5) are in sliding connection, one end of the sliding plate (9) is fixedly connected with the pull rod (10), and the other end of the sliding plate (9) is rotationally connected with the pressing block (8).

2. The blade semi-span detection device according to claim 1, characterized in that, The detection component top is provided with a first groove (17), and the top of both sides of the first groove (17) has the first detection surface (110) and the second detection surface (120).

3. The blade semi-span detection device according to claim 1, characterized in that, Further comprising a batten (15), the batten (15) is two, two batten (15) and the two sides of the bottom plate (1) are fixedly connected, and the upper end surface of two batten (15) forms the first reference surface.

4. The blade semi-span detection device according to claim 1, characterized in that, A through hole is formed in the other end of the third support (5), one end of the pull rod (10) passes through the through hole and is connected with the adjusting assembly.

5. The blade semi-span detection device according to claim 4, characterized in that, The adjusting assembly comprises a spring (18) and a nut (19), one end of the pull rod (10) is provided with a thread, the spring (18) is sleeved on one end of the pull rod (10), the nut (19) is threadedly connected with one end of the pull rod (10), and the nut (19), the spring (18) and the third support (5) are sequentially abutted.

6. The blade semi-span width detection device according to claim 5, characterized in that, The pressing structure further comprises a first connecting pin (27), the pull rod (10) is provided with a second groove, the sliding plate (9) is placed in the second groove, a first connecting hole is formed in the direction perpendicular to the second groove, the first connecting hole is communicated with the second groove, the first connecting pin (27) passes through the first connecting hole and the sliding plate (9), and the sliding plate (9) and the pull rod (10) are fixedly connected.

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