An automatic detection device for steam turbine blades

Abstract

The utility model discloses a kind of steam turbine blade automation detection devices, comprising: three-coordinate measuring instrument main body, exchange subassembly;Three-coordinate measuring instrument main body includes measuring table, control panel fixedly installed on one side of measuring table;Exchange subassembly includes electric slide rail fixedly installed on measuring table, slider of electric slide rail upper end swing joint, mounting plate fixedly installed on slider upper end.This steam turbine blade automation detection device described in the utility model, the blade clamped in the first clamping plate and the second clamping plate of mounting plate both ends on measuring table, it can be driven to realize exchange detection in detection by electric slide rail, to shorten the time of blade detection after disassembly, to improve the detection efficiency of this three-coordinate measuring instrument to blade, simultaneously, the blade in detection on the first clamping plate and the second clamping plate, it will also be in the positioning of positioning plate on electric slide rail, and in the compression of cylinder-driven compression plate, to ensure its position accuracy and stability in detection.

Description

Technical Field

[0001] This utility model relates to the field of turbine blade testing technology, specifically to an automated turbine blade testing device. Background Technology

[0002] Steam turbine blades are the core components of a steam turbine, responsible for converting the thermal energy of steam into mechanical energy. After production and processing, steam turbine blades need to be inspected using a coordinate measuring machine (CMM). The CMM has air source brake switches and micro-motion devices on all three axes, enabling precision transmission and automated inspection on a single axis. It adopts a high-performance data acquisition system and is applied to precision measurement in product design, mold equipment, gear measurement, blade measurement, mechanical manufacturing, tooling fixtures, steam mold parts, and electronic appliances.

[0003] Existing coordinate measuring machines for blades, such as the coordinate measuring fixture for aircraft engine blades with a fixed structure disclosed in CN216668652U, have the advantages of fixing the aircraft engine blades through a fixing mechanism, facilitating measurement, and being simple and convenient to operate as it can be fixed by a motor. However, the separate fixing mechanism set at the upper end of this coordinate measuring fixture makes it inconvenient to quickly change the blades after inspection. This makes it easy for the inspection efficiency to be affected by the time spent on disassembling the blades after inspection and installing the blades to be inspected. Therefore, we propose an automated inspection device for steam turbine blades. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] An automated turbine blade inspection device includes: a coordinate measuring machine (CMM) body and a switching assembly; the CMM body includes a measuring table and a control panel fixedly installed on one side of the measuring table; the switching assembly includes an electric slide rail fixedly installed on the measuring table, a slider movably connected to the upper end of the electric slide rail, a mounting plate fixedly installed on the upper end of the slider, a first clamping plate and a second clamping plate fixedly installed on both sides of the mounting plate, pressure blocks movably installed on both sides of the first clamping plate and the second clamping plate, blades movably clamped on both the first clamping plate and the second clamping plate, a fixed seat fixedly installed in the middle of the measuring table, a cylinder fixedly installed on the upper end of the fixed seat, and a pressure plate fixedly installed at the front end of the cylinder.

[0007] Preferably, a first friction pad is also fixedly installed on the pressure plate.

[0008] Preferably, a second friction pad is also fixedly installed on both the first clamping plate and the second clamping plate.

[0009] Preferably, a fixing rod is fixedly installed on both sides of the pressure block, and a fixing plate is fixedly installed on one end of each fixing rod. Mounting holes are arranged on both sides of the first clamping plate and the second clamping plate, and the fixing rods are movably installed in the mounting holes.

[0010] Preferably, each of the fixed rods is also movably fitted with a spring at its outer end.

[0011] Preferably, the measuring platform is provided with sliding grooves on both sides, and the mounting plate is fixedly installed with restraining feet at the four corners of the lower end, and the bottom of the restraining feet is movably matched and installed in the sliding grooves.

[0012] Preferably, positioning plates are also fixedly installed at both ends of the electric slide rail.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, the blades clamped in the first and second clamps at both ends of the mounting plate on the measuring platform can be swapped during inspection by the drive of the electric slide rail, thereby shortening the time for disassembly and assembly after blade inspection and improving the inspection efficiency of this coordinate measuring machine for blades.

[0015] 2. In this utility model, the blade being detected on the first clamping plate and the second clamping plate will also be positioned by the positioning plate on the electric slide rail and pressed by the cylinder-driven pressure plate, thereby ensuring the accuracy and stability of its position during detection. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention;

[0017] Figure 2 This is a structural diagram of the electric slide rail of this utility model;

[0018] Figure 3 This is a structural diagram of the first clamping plate of this utility model;

[0019] Figure 4 This is another perspective of the first clamping plate structure of this utility model;

[0020] Figure 5 This is a structural diagram of the cylinder of this utility model.

[0021] Figure label:

[0022] 100. Main body of the coordinate measuring machine; 101. Measuring table; 102. Control panel;

[0023] 200. Replacement component; 201. Electric slide rail; 202. Slider; 203. Mounting plate; 204. First clamping plate; 205. Second clamping plate; 206. Pressure block; 207. Blade; 208. Fixed seat; 209. Cylinder; 210. Pressure plate; 211. First friction pad; 212. Second friction pad; 213. Fixed rod; 214. Fixed plate; 215. Mounting hole; 216. Spring; 217. Slide groove; 218. Restraining foot; 219. Positioning plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0025] The following describes, with reference to the accompanying drawings, some embodiments of an automated turbine blade inspection device provided by this utility model.

[0026] Example 1:

[0027] Combination Figure 1-5 As shown, the present invention provides an automated turbine blade inspection device, comprising: a coordinate measuring machine body 100 and a switching component 200; the coordinate measuring machine body 100 includes a measuring platform 101 and a control panel 102 fixedly installed on one side of the measuring platform 101; the switching component 200 includes an electric slide rail 201 fixedly installed on the measuring platform 101, a slider 202 movably connected to the upper end of the electric slide rail 201, a mounting plate 203 fixedly installed on the upper end of the slider 202, a first clamping plate 204 and a second clamping plate 205 fixedly installed on both sides of the mounting plate 203 respectively, pressure blocks 206 movably installed on both sides of the first clamping plate 204 and the second clamping plate 205, blades 207 movably clamped on both the first clamping plate 204 and the second clamping plate 205, a fixing seat 208 fixedly installed in the middle of the measuring platform 101, and a blade 207 fixedly installed on the upper end of the fixing seat 208. The cylinder 209 has a pressure plate 210 fixedly installed at its front end. A first friction pad 211 is also fixedly installed on the pressure plate 210. A second friction pad 212 is also fixedly installed on both the first clamping plate 204 and the second clamping plate 205. A fixing rod 213 is fixedly installed on both sides of the pressure block 206. A fixing plate 214 is fixedly installed on one end of each fixing rod 213. Mounting holes 215 are arranged on both sides of the first clamping plate 204 and the second clamping plate 205, and the fixing rods 213 are movably installed in the mounting holes 215. A spring 216 is movably installed on the outer end of each fixing rod 213. A sliding groove 217 is also opened on both sides of the measuring table 101. A restraining foot 218 is fixedly installed at the four corners of the lower end of the mounting plate 203, and the bottom of the restraining foot 218 is movably matched and installed in the sliding groove 217. A positioning plate 219 is fixedly installed on both ends of the electric slide rail 201.

[0028] Specifically, after the turbine blades are manufactured, they need to be inspected using a coordinate measuring machine (CMM). Currently, all three axes of the CMM are equipped with air-source brake switches and micro-motion devices, enabling precision transmission and automated inspection on a single axis. The blades 207 held in the first clamping plate 204 and second clamping plate 205 at both ends of the mounting plate 203 on the measuring table 101 can be swapped during inspection via the drive of the electric slide rail 201. This shortens the time for disassembling and reassembling the blades 207 after inspection, improving the inspection efficiency of the CMM for the blades 207. Simultaneously, the first clamping plate 204... 4. The blade 207 being detected on the second clamping plate 205 will also be positioned by the positioning plate 219 on the electric slide rail 201 and pressed by the pressure plate 210 driven by the cylinder 209, thereby ensuring its accurate and stable position during detection. The electric slide rail 201 mainly drives the upper slider 202 to realize the overall movement and adjustment of the mounting plate 203 fixed on the slider 202. The pressure blocks 206 on both sides of the first clamping plate 204 and the second clamping plate 205, as well as the fixing rod 213 and spring 216 connected to one side of the pressure block 206, are mainly used to control the first clamping plate. The blades 207 installed in the first clamping plate 204 and the second clamping plate 205 are pressed together to ensure stability during movement and adjustment. The pressure plate 210 driven by the cylinder 209 mainly presses against the blades 207 between the pressure blocks 206. The first friction pad 211 on the pressure plate 210 and the second friction pad 212 in the first clamping plate 204 and the second clamping plate 205 increase the friction between the pressure plate 210 and the blades 207 during pressing, ensuring the stability of the blades 207 during pressing. The binding feet 218 installed in the slide grooves 217 at the four corners of the bottom of the mounting plate 203 are mainly used for mounting the plate 203. 03 The overall support and restraint ensure the stability of the mounting plate 203 when the pressure plate 210 presses the blade 207. The fixing plate 214 fixedly installed at one end of the fixing rod 213 is mainly for pressing and adjusting, so as to facilitate the opening of the pressure blocks 206 on both sides of the first clamping plate 204 and the second clamping plate 205, thereby facilitating the disassembly or installation of the blade 207 inside. The positioning plates 219 on both sides of the electric slide rail 201 are mainly used for positioning the two ends of the mounting plate 203, thereby realizing the positioning of the first clamping plate 204 and the second clamping plate 205 at its upper end.

[0029] Working principle and usage process of this utility model:

[0030] After the blade 207 in the first clamping plate 204 on the measuring table 101 is detected, the cylinder 209 is first activated to drive the pressure plate 210 to move outward. Then, the electric slide rail 201 is activated to move the slider 202 and the mounting plate 203 as a whole, so that the mounting plate 203 is moved to the positioning plate 219 at the other end. At this time, the second clamping plate 205 at the upper end of the mounting plate 203 will move to the middle of the measuring table 101, and the first clamping plate 204 will move outward to the outside of the measuring table 101. Then, the cylinder 209 is restarted to drive the pressure plate 210 to press the blade 207 in the second clamping plate 205. After clamping, the blades 207 inside the second clamping plate 205 can be inspected. At the same time, during the inspection of the blades 207 inside the second clamping plate 205, the fixing plates 214 at both ends of the first clamping plate 204 can be pressed to quickly and conveniently open the pressure blocks 206 at both ends of the first clamping plate 204, so as to remove the inspected blades 207 and reinstall new blades 207 to be inspected, so as to pre-fix them inside the first clamping plate 204, thereby allowing the blades 207 inside the second clamping plate 205 to be inspected and then swapped for inspection, thereby improving the inspection efficiency of the coordinate measuring machine body 100.

[0031] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An automated inspection device for steam turbine blades, characterized in that, include: The main body of the coordinate measuring machine (100) and the replacement component (200); The main body (100) of the coordinate measuring machine includes a measuring table (101) and a control panel (102) fixedly installed on one side of the measuring table (101). The replacement assembly (200) includes an electric slide rail (201) fixedly installed on the measuring table (101), a slider (202) movably connected to the upper end of the electric slide rail (201), an mounting plate (203) fixedly installed on the upper end of the slider (202), a first clamping plate (204) and a second clamping plate (205) fixedly installed on both sides of the mounting plate (203), a pressure block (206) movably installed on both sides of the first clamping plate (204) and the second clamping plate (205), a blade (207) movably clamped on both the first clamping plate (204) and the second clamping plate (205), a fixed seat (208) fixedly installed in the middle of the measuring table (101), a cylinder (209) fixedly installed on the upper end of the fixed seat (208), and a pressure plate (210) fixedly installed at the front end of the cylinder (209).

2. The automated turbine blade inspection device according to claim 1, characterized in that, A first friction pad (211) is also fixedly installed on the pressure plate (210).

3. The automated turbine blade inspection device according to claim 1, characterized in that, A second friction pad (212) is also fixedly installed on both the first clamping plate (204) and the second clamping plate (205).

4. The automated turbine blade inspection device according to claim 1, characterized in that, The pressure block (206) is also fixedly installed on both sides with fixing rods (213), and a fixing plate (214) is fixedly installed on one end of each fixing rod (213). The first clamping plate (204) and the second clamping plate (205) are provided with mounting holes (215) on both sides, and the fixing rods (213) are movably installed in the mounting holes (215).

5. The automated turbine blade inspection device according to claim 4, characterized in that, The outer end of each fixing rod (213) is also movably fitted with a spring (216).

6. The automated turbine blade inspection device according to claim 1, characterized in that, The measuring platform (101) is provided with sliding grooves (217) on both sides, and the mounting plate (203) is provided with binding feet (218) at the four corners of the lower end, and the bottom of the binding feet (218) is movably matched and installed in the sliding grooves (217).

7. The automated inspection device for steam turbine blades according to claim 1, characterized in that, Positioning plates (219) are also fixedly installed at both ends of the electric slide rail (201).

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