Wall thickness detection device for aero-engine turbine blade

Abstract

The utility model discloses a wall thickness detection device for an aero-engine turbine blade, which comprises a bottom plate, connecting plates which are arranged above the bottom plate and are symmetrical to each other, and a connecting rod which is arranged between the connecting plates, the connecting rod is connected with a measuring assembly which moves transversely, and a sliding roller is arranged on the surface of the bottom plate. A clamping assembly which moves longitudinally and is used for fixing the turbine blade is arranged above the sliding roller, and the clamping assembly drives the turbine blade to move longitudinally at the measuring assembly to detect the wall thicknesses of different sites. The wall thickness of multiple positions can be measured without manual holding, and the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to turbine blade detection technical field, concretely relates to a wall thickness detection device for aero-engine turbine blade. BACKGROUND

[0002] Turbine blade is the important component part of turbine section in gas turbine engine, and the high-speed rotating blade is responsible for sucking the high-temperature and high-pressure airflow into the combustor to maintain the work of the engine, in order to ensure stable and long-time work in the extreme environment of high temperature and high pressure, the turbine blade often adopts high-temperature alloy forging, and different ways are adopted to cool, such as internal airflow cooling, boundary layer cooling, or adopting the thermal barrier coating for protecting the blade to ensure the reliability during operation.

[0003] The turbine blade often needs to detect the wall thickness of the blade after being processed, and in the existing detection tool, the angle of the blade needs to be adjusted by changing the state of a plurality of bolts, and at the same time, manual holding is needed for a long time, which is time-consuming and labor-consuming, and the detection efficiency is low.

[0004] Therefore, the wall thickness detection device for the aero-engine turbine blade is provided without manual holding. UTILITY MODEL CONTENTS

[0005] The utility model discloses a wall thickness detection device for aero-engine turbine blade, which is provided with a measuring assembly moving horizontally and a clamping assembly moving longitudinally above the bottom plate, so that the wall thickness of the turbine blade at multiple positions can be detected without manual holding, thereby improving the detection efficiency and solving the above problems in the prior art.

[0006] To solve the above technical problems, the utility model adopts the following scheme:

[0007] A wall thickness detection device for aero-engine turbine blade, comprising a bottom plate, a connecting plate above the bottom plate and symmetrical to each other, and a connecting rod between the connecting plates, wherein the connecting rod is connected with a measuring assembly moving horizontally, the surface of the bottom plate is provided with a sliding roller, a clamping assembly moving longitudinally for fixing the turbine blade is provided above the sliding roller, and the clamping assembly drives the turbine blade to move longitudinally at the measuring assembly to detect the wall thickness of different positions.

[0008] Further, the connecting rod is provided with a moving block around the periphery, the measuring assembly comprises a vertical plate connected with the bottom end of the moving block, the surface of the vertical plate is provided with a scale, and the top and bottom of the side surface close to the clamping assembly are respectively provided with transition plates, and a guide rod and a measuring plate penetrating through the guide rod are arranged between the transition plates.

[0009] Further, the number of measuring plates is two, and a spring one is arranged between the measuring plates.

[0010] Further, the measuring plate is marked with scale marks adjacent to the end of the vertical plate in contact with the side of the vertical plate.

[0011] Further, the guide rod is provided with a plurality of limiting holes, and the limiting holes can penetrate the inserting rod to limit the position of the measuring plate below.

[0012] Further, the top of the moving block is provided with a bolt.

[0013] Further, the clamping assembly comprises an assembly plate provided with a groove at the bottom and a vertical plate above the assembly plate, the sliding roller is located in the groove, one side of the vertical plate is provided with a plurality of sliding grooves, and a clamping plate capable of moving up and down to adjust the clamping thickness is arranged in the sliding grooves.

[0014] Further, the sliding grooves are provided with a fixed rod penetrating one end of the clamping plate, and the bottom of the clamping plate is provided with a spring two penetrating the fixed rod.

[0015] Further, the bottom surface of the clamping plate and the surface of the assembly plate are respectively provided with buffer pads.

[0016] Further, the surface of the sliding roller is provided with a plurality of rolling balls, and the top surface of the rolling balls is in contact with the groove.

[0017] The utility model has the beneficial effects:

[0018] The utility model discloses a measuring assembly and a clamping assembly that move horizontally and vertically respectively, and the two are matched with each other, without manual holding, so that the wall thickness of the turbine blade can be determined at multiple positions during movement, and the detection efficiency is improved. Two measuring plates are arranged, and the interval between the two measuring plates is adjusted to adapt to the thickness of the blade under the elastic action of the spring one and the limiting action of the inserting rod, so that the measurement of different wall thicknesses is realized, and the utilization rate is improved. The sliding roller arranged at the top of the sliding rail is beneficial to reducing the friction between the sliding roller and the assembly plate, and facilitates vertical movement. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a top view structural schematic diagram of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the utility model Figure 1 It is a local enlarged structural schematic diagram of the utility model;

[0022] Figure 4 It is a local enlarged structural schematic diagram of the clamping assembly of the utility model.

[0023] Mark: 1 - bottom plate, 10 - slide roller, 11 - ball, 2 - connecting plate, 20 - connecting rod, 21 - moving block, 3 - measuring assembly, 30 - vertical plate, 300 - scale, 31 - transition plate, 32 - guide rod, 33 - measuring plate, 34 - spring one, 35 - limit hole, 36 - bolt, 4 - clamping assembly, 40 - assembly plate, 41 - groove, 42 - vertical plate, 43 - sliding groove, 44 - fixed rod, 45 - spring two, 46 - clamping plate, 47 - buffer pad. DETAILED DESCRIPTION

[0024] The utility model will be described in further detail below in combination with the embodiments and drawings, but the embodiment of the utility model is not limited to this.

[0025] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship that the utility model product is usually placed in use, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore, it cannot be understood as a limitation on the utility model.

[0026] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "open", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] Example 1

[0028] The embodiment 1 of the utility model is a wall thickness detection device for turbine blade of aero-engine, including bottom plate 1 and connecting plate 2 located above bottom plate 1 and mutually symmetrical and connecting rod 20 located between connecting plate 2, connecting rod 20 connects transversely moving measuring assembly 3, the surface of bottom plate 1 is provided with slide roller 10, slide roller 10 is provided with longitudinally moving clamping assembly 4 for fixing turbine blade above, clamping assembly 4 drives turbine blade to move longitudinally at measuring assembly 3 and detects the wall thickness of different points.

[0029] Reference Figure 1 And Figure 2This application employs a laterally movable measuring component 3 and a longitudinally movable clamping component 4. After one end of the turbine blade is fixed and limited by the clamping component 4, the measuring component 3 is fixed, and the clamping component 4 is moved. This allows the measuring component 3 to measure the wall thickness at multiple locations along the same longitudinal line of the blade. Simultaneously, the thickness at each location is marked during measurement. The position of the measuring component 3 in the connecting plate 2 is then adjusted, and the measuring component 3 is reused to measure the wall thickness of the next longitudinal line. In this application, the measured thickness value is marked after each measurement and recorded, eliminating the need for multiple adjustments of the bolt 36 to change the blade angle. This solves the problem of the prior art requiring prolonged manual holding for measurement, thus improving measurement efficiency.

[0030] It should be noted that the measurement path of the measuring component 3 is consistent with the moving direction of the clamping component 4 during the measurement process.

[0031] The wall thickness measurement of the measuring component 3 is mainly achieved through the following: a moving block 21 is sleeved around the outer periphery of the connecting rod 20; the measuring component 3 includes a vertical plate 30 connected to the bottom end of the moving block 21; a scale 300 is provided on the surface of the vertical plate 30; transition plates 31 are respectively provided at the top and bottom of the side near the clamping component 4; a guide rod 32 and a measuring plate 33 passing through the guide rod 32 are provided between the transition plates 31; there are two measuring plates 33, and a spring 34 is provided between the measuring plates 33.

[0032] Specifically, refer to Figure 3 The connecting rod 20 is located at the center of the two connecting plates 2, thus ensuring that the connecting rod 20 is in a horizontal position, which ensures that the measuring component 3 moves horizontally and linearly for thickness measurement. The guide rod 32 passes through the two measuring plates 33 and, under the action of the spring 34, changes the distance between the two measuring plates 33, making this distance suitable for measurements of multiple positions and thicknesses. During measurement, the upper measuring plate 33 contacts the blade surface, and the lower measuring plate 33 contacts the bottom surface of the blade. When not measuring, the spring 34 is in its initial state. During measurement, the spring 34 is stretched to ensure that the upper measuring plate 33 is in close contact with the blade, preventing the measuring plate 33 from moving away from the blade and making thickness measurement impossible.

[0033] Simultaneously, the end of the measuring plate 33 adjacent to the vertical plate 30 contacts the side of the vertical plate 30 for graduation marking. This allows for accurate marking and timely recording of the thickness at this location.

[0034] In order to make the measurement gap between the two measurement plates 33 consistent with the position of the blade to be measured during the measurement of the wall thickness, the guide rod 32 is provided with a plurality of limiting holes 35, which can be penetrated by a plug rod for limiting the position of the lower measurement plate 33 (the plug rod is not shown in the figure). Since the bottom end position of each blade is different, it is necessary to adjust the lower measurement plate 33 to adapt to the bottom end of the plurality of blades. After moving the bottom measurement plate 33 up and down along the guide rod 32 to the appropriate position, the plug rod is inserted through the limiting hole 35 in the guide rod 32 to limit the position of the lower measurement plate 33. Thus, under the stretching action of the spring 134, the two measurement plates 33 are in close contact with the surface and bottom surface of the blade. The measurement plate 33 is always perpendicular to the vertical plate 30 during contact, ensuring that the gap between the two measurement plates 33 represents the thickness of the blade at that time.

[0035] In order to ensure that the measurement assembly 3 measures the blade during the vertical movement of the clamping assembly 4, a bolt 36 is provided on the top of the moving block 21. The bolt 36 penetrates the top of the moving block 21 and contacts the connecting rod 20, fixing the position of the moving block 21, thereby fixing the position of the vertical plate 30. By moving the clamping assembly 4, the wall thickness of the blade can be detected during the vertical movement of the blade.

[0036] Embodiment 2

[0037] This embodiment 2 is implemented on the basis of embodiment 1. The clamping assembly 4 includes an assembly plate 40 provided with a groove 41 at the bottom and a vertical plate 42 located above the assembly plate 40. The sliding roller 10 is located in the groove 41. A plurality of sliding grooves 43 are provided on one side of the vertical plate 42. A clamping plate 46 for adjusting the clamping thickness by moving up and down is provided in the sliding groove 43. A fixed rod 44 penetrating one end of the clamping plate 46 is provided in the sliding groove 43. A spring 245 is provided below the clamping plate 46 and penetrates the fixed rod 44.

[0038] Specifically, referring to Figure 4 , the clamping plate 46 stretches the spring 245 during clamping, thereby limiting one end of the blade under the elastic action. At the same time, the number of clamping plates 46 is at least two, and the clamping of one end of the blade is synchronized, realizing the stable clamping of the turbine blade during the measurement process and preventing the phenomenon of falling.

[0039] The length of the clamping plate 46 can be set according to actual conditions to meet the clamping of turbine blades of various specifications. At the same time, the two ends of the spring 134 and the spring 245 are fixedly connected.

[0040] In order to prevent damage to the surface of the blade during clamping, a buffer pad 47 is provided on the bottom surface of the clamping plate 46 and the surface of the assembly plate 40, respectively. The buffer pad 47 is made of rubber or silicone material to avoid direct contact of the blade with the clamping plate 46 and the assembly plate 40 made of metal material, preventing surface scratches.

[0041] In order to improve the moving fluency of the assembly plate 40 above the slide roller 10, the surface of the slide roller 10 is provided with a plurality of balls 11, the top surface of the ball 11 is in contact with the groove 41. The ball 11 is located on the surface of the slide roller 10, and after being in contact with the groove 41 of the assembly plate 40, the ball 11 rotates between the groove 41 and the slide roller 10 under the condition of external thrust, thereby reducing the friction and realizing the convenient sliding of the assembly plate 40; when the assembly plate 40 needs to be limited, the existing limiting assembly can be used for limiting, which is a conventional technical operation of the prior art, and will not be described here.

[0042] The working principle of the utility model is: when using, the spring two 45 stretches the clamping plate 46, and one end of the turbine blade is horizontally placed above the assembly plate 40, the clamping plate 46 is in close contact with the surface of the turbine blade under the action of elasticity, the moving block 21 is driven to move the vertical plate 30 to the blade position left and right, after adjusting the position of the two measuring plates 33, the locking bolt 36 is locked, the assembly plate 40 moves above the slide roller 10, the blade moves vertically and the wall thickness of multiple positions in the vertical direction is measured through the measuring plate 33, and the thickness is marked and recorded through the scale 300. Conveniently realize the wall thickness measurement of multiple positions of the turbine blade, without manual hand holding adjustment angle, improve the detection efficiency.

[0043] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, according to the technical essence of the utility model, any simple modification, equivalent replacement and improvement of the above embodiment within the spirit and principle of the utility model still belongs to the protection scope of the utility model technical scheme.

Claims

1. A wall thickness detection device for a turbine blade of an aeroengine, characterized in that, The utility model provides a turbine blade wall thickness measuring device, including bottom plate (1) and the connecting plate (2) and the connecting rod (20) between connecting plate (2) that are located above bottom plate (1) and mutually symmetrical, the connecting rod (20) is connected to the measuring assembly (3) of transverse movement, the surface of bottom plate (1) is provided with slide roller (10), the slide roller (10) is provided with the clamping assembly (4) for fixing turbine blade that moves longitudinally above, the clamping assembly (4) drives turbine blade to move longitudinally at measuring assembly (3) and detects the wall thickness of different sites.

2. The wall thickness detection device for a turbine blade of an aero-engine according to claim 1, characterized by, The connecting rod (20) is provided with a moving block (21) around the periphery, the measuring assembly (3) includes a vertical plate (30) connected to the bottom end of the moving block (21), the surface of the vertical plate (30) is provided with a scale (300), and a transition plate (31) is provided near the top and bottom of the side of the clamping assembly (4), respectively, the transition plates (31) are provided with a guide rod (32) and a measuring plate (33) penetrating the guide rod (32).

3. The wall thickness detection device for a turbine blade of an aeroengine according to claim 2, characterized in that, The number of measuring plates (33) is two, and a spring (34) is provided between the measuring plates (33).

4. The wall thickness detection device for a turbine blade of an aero-engine according to claim 2, characterized by, The end of the measuring plate (33) adjacent to the vertical plate (30) is in contact with the side of the vertical plate (30) for scale marking.

5. The wall thickness detection device for a turbine blade of an aeroengine according to claim 2, characterized by The guide rod (32) is provided with a plurality of limiting holes (35), the limiting holes (35) can penetrate into a plug rod for limiting the measuring plate (33) below.

6. The wall thickness detection device for a turbine blade of an aero-engine according to claim 2, characterized by, The top of the moving block (21) is provided with a bolt (36).

7. The wall thickness detection device for a turbine blade of an aero-engine according to claim 2, characterized by, The clamping assembly (4) includes an assembly plate (40) provided with a groove (41) at the bottom and a vertical plate (42) above the assembly plate (40), the slide roller (10) is located in the groove (41), one side of the vertical plate (42) is provided with a plurality of sliding grooves (43), the sliding grooves (43) are provided with a clamping plate (46) moving up and down to adjust the clamping thickness.

8. The wall thickness detection device for a turbine blade of a gas turbine engine according to claim 7, characterized by, The sliding groove (43) is provided with a fixed rod (44) penetrating one end of the clamping plate (46), and the lower side of the clamping plate (46) is provided with a spring (45) penetrating the fixed rod (44).

9. The wall thickness detection device for a turbine blade of a gas turbine engine according to claim 7, characterized by, The bottom surface of the clamping plate (46) and the surface of the assembly plate (40) are respectively provided with a buffer pad (47).

10. The wall thickness detection device for a turbine blade of an aeroengine according to claim 7, characterized by The surface of the slide roller (10) is provided with a plurality of balls (11), and the top surface of the balls (11) is in contact with the groove (41).

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