Non-contact creep deformation measuring device

Abstract

The utility model discloses a non-contact creep deformation measuring device, and relates to the technical field of material creep performance detection, the non-contact creep deformation measuring device comprises a movable block and two rack lantern rings, the two rack lantern rings are respectively arranged above and below the movable block, fixed screw rods are arranged in a manner of penetrating through the upper and lower ends of the rack lantern rings and the movable block, and the fixed screw rods are connected with the movable block. The industrial-grade measuring head is matched with the high-brightness light supplementing lamp, so that non-contact type accurate measurement of creep deformation can be realized, the creep performance of a small-size sample of a turbine blade can be conveniently tested, the height of the industrial-grade measuring head can be conveniently adjusted up and down according to samples of different sizes, and the measurement accuracy is improved. According to the non-contact creep deformation measuring device, the measuring head does not need to be calibrated repeatedly, the using flexibility of the non-contact creep deformation measuring device is enhanced, the testing efficiency is improved, and the problem that a traditional lead-out rod device cannot be applied to a small-size sample for creep deformation measurement in conventional creep test deformation measurement is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of material creep performance detection, in particular to a non-contact creep deformation measuring device. Background Art

[0002] With the rapid development and leapfrog progress of aerospace technology, aircraft have become the focus of development of aerospace departments in many countries in recent years. Aircraft engines are the core of aircraft, among which engine turbine blades are highly complex parts with large numbers and complex shapes, and extremely strict production process requirements. Under long-term stable operation in extreme environments of high temperature and high pressure, the blades will undergo slow plastic deformation. The higher the temperature or the greater the stress, the more significant the creep phenomenon, which is also the main reason for engine failure;

[0003] The performance research of turbine blades cannot be separated from the support of various detection technologies. The high-temperature creep test is to test the high-temperature damage tolerance of materials under constant temperature and load. When conducting a creep test, it is necessary to measure the creep deformation of the sample. It is usually composed of a creep deformation guide device installed on the shoulder of the sample and two displacement sensors assembled thereon. The displacement change of the sample deformation causes the relative displacement of the upper and lower lead-out rods. The displacement of the lead-out rod is transmitted to the top block of the grating scale through the rotation of the pulley on the connecting rod to realize the collection of the sample deformation.

[0004] At present, the conventional lead-out rod device is commonly used for creep test deformation measurement, which cannot be applied to small-sized specimens for creep deformation measurement. This patent designs a non-contact, high-precision, real-time measurement video extensometer that is not limited by the size of the specimen. It measures the displacement and strain of the specimen in real time by shooting and analyzing the changes in the image features of the specimen during the test force loading and holding process. Utility Model Content

[0005] The main purpose of the utility model is to provide a non-contact creep deformation measuring device, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A non-contact creep deformation measuring device comprises a movable block and two frame collars, wherein the two frame collars are respectively mounted above and below the movable block, and fixing screws are arranged at the upper and lower ends of the frame collars and the movable block;

[0008] The fixing screw is threadedly connected to the frame collar, and the fixing screw is slidably connected to the movable block. A lifting screw is arranged at the upper and lower ends of the movable block and one of the frame collars. The lifting screw is threadedly connected to the movable block, and the lifting screw is rotatably connected to the frame collar. The front end of the movable block is fixedly connected to a bracket body, a guide rail is fixedly installed on the top surface of the bracket body and at one end away from the movable block, a slide rail body is slidably installed on the top of the guide rail, an industrial-grade probe is installed on the top of the slide rail body, a self-locking slide rail is arranged on the top of the bracket body, and a sliding bracket is movably installed on the bracket body through the self-locking slide rail, and a high-brightness fill light is installed on the top of the sliding bracket.

[0009] As a further solution of the utility model, the bottom end of the lifting screw rod is rotatably connected to the frame collar below the movable block, and mounting holes are provided at the front positions of the upper and lower ends of the two frame collars.

[0010] As a further solution of the utility model, the industrial-grade probe is internally provided with a light input adjustment knob and a focal length adjustment knob, a locking button is threadedly connected to the top end of the slide rail body, and the bottom end of the locking button abuts against the top surface of the guide rail.

[0011] As a further solution of the utility model, a handle is fixedly connected to the top end of the lifting screw rod, and the outer ring of the handle is provided with anti-slip patterns.

[0012] As a further solution of the utility model, a light source lamp socket is provided at one end of the high-brightness fill light close to the industrial-grade measuring head, and a brightness adjustment knob is provided at the other end.

[0013] As a further solution of the utility model, the high-brightness fill light is movably installed on the top of the sliding bracket, and the angle of the high-brightness fill light matches the measuring angle of the industrial-grade probe, the bottom end of the slide rail body does not contact the top of the bracket body, and the industrial-grade probe is slidably connected to the guide rail through the slide rail body.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model can realize non-contact accurate measurement of creep deformation by setting an industrial-grade probe with a high-brightness fill light, which is convenient for testing the creep performance of small-sized samples of turbine blades.

[0016] In addition, by setting the lifting screw, movable block, bracket body, frame collar and industrial-grade probe, it is convenient to adjust the height of the industrial-grade probe up and down according to specimens of different sizes, without the need for repeated probe calibration, thereby enhancing the flexibility of the non-contact creep deformation measurement device and improving test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a non-contact creep deformation measuring device of the utility model;

[0018] Figure 2 This is a disassembled diagram of the overall structure of a non-contact creep deformation measuring device of the utility model;

[0019] Figure 3 It is a schematic diagram of the combination of a movable block, a frame collar and a lifting screw rod in the overall structure of a non-contact creep deformation measuring device of the utility model;

[0020] Figure 4 It is a schematic diagram of the combination of a locking button and a slide rail body in the overall structure of a non-contact creep deformation measuring device of the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the structure of an industrial-grade probe in the overall structure of a non-contact creep deformation measuring device.

[0022] In the figure: 1. movable block; 2. bracket body; 3. guide rail; 4. slide rail body; 5. industrial-grade probe; 6. lock button; 7. high-brightness fill light; 8. lifting screw; 9. rack ring; 10. fixing screw; 11. light input adjustment knob; 12. focal length adjustment knob. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-3 As shown, a non-contact creep deformation measuring device comprises a movable block 1 and two frame collars 9, the two frame collars 9 are respectively mounted above and below the movable block 1, and a fixing screw 10 is arranged through the upper and lower ends of the frame collar 9 and the movable block 1;

[0025] The fixed screw 10 is threadedly connected to the frame collar 9, and the fixed screw 10 is slidably connected to the movable block 1. A lifting screw 8 is arranged at the upper and lower ends of the movable block 1 and one of the frame collars 9. The lifting screw 8 is threadedly connected to the movable block 1, and the lifting screw 8 is rotatably connected to the frame collar 9. The front end of the movable block 1 is fixedly connected to the bracket body 2, and a guide rail 3 is fixedly installed on the top surface of the bracket body 2 and at one end away from the movable block 1. A slide rail body 4 is slidably installed on the top of the guide rail 3, and an industrial-grade probe 5 is installed on the top of the slide rail body 4. A self-locking slide rail is arranged on the top of the bracket body 2, and a sliding bracket is movably installed on the bracket body 2 through the self-locking slide rail, and a high-brightness fill light 7 is installed on the top of the sliding bracket.

[0026] In this embodiment, the bottom end of the lifting screw rod 8 is rotatably connected to the frame collar 9 below the movable block 1, and mounting holes are provided at the front positions of the upper and lower ends of the two frame collars 9. The mounting holes facilitate the mounting of the frame collar 9 on the external test machine column.

[0027] In this embodiment, the industrial-grade probe 5 is provided with a light input adjustment knob 11 and a focal length adjustment knob 12 inside, and a locking button 6 is threadedly connected to the top of the slide rail body 4, and the bottom end of the locking button 6 is abutted against the top surface of the guide rail 3. By rotating the focal length adjustment knob 12 or the light input adjustment knob 11, the focal length and light input of the industrial-grade probe 5 can be easily adjusted.

[0028] In this embodiment, a handle is fixedly connected to the top of the lifting screw rod 8, and the outer ring of the handle is provided with anti-slip texture. The provided handle is convenient for people to hold, and the provided anti-slip texture can increase the friction when holding and reduce the probability of slipping out of the hand.

[0029] In this embodiment, a light source socket is provided at one end of the high-brightness fill light 7 close to the industrial-grade probe 5, and a brightness adjustment knob is provided at the other end. The brightness adjustment knob is used to facilitate adjustment of the brightness of the high-brightness fill light 7, so as to cooperate with the high-temperature creep endurance testing machine to accurately measure the creep deformation of small-size specimens.

[0030] In this embodiment, the high-brightness fill light 7 is movably installed on the top of the sliding bracket, and the angle of the high-brightness fill light 7 matches the measuring angle of the industrial-grade probe 5. The bottom end of the slide rail body 4 does not contact the top of the bracket body 2, and the industrial-grade probe 5 is slidably connected to the guide rail 3 through the slide rail body 4. The angle of the high-brightness fill light 7 matches the industrial-grade probe 5, which is convenient for providing lighting effects, and the bottom end of the slide rail body 4 does not contact the bracket body 2, which can prevent the bracket body 2 from affecting the sliding of the slide rail body 4.

[0031] It should be noted that the utility model is a non-contact creep deformation measuring device. When in use, the frame collar 9 is first installed on the external testing machine column, and then the device movable block 1 is installed on the frame collar 9 and fixed with a fixing screw 10;

[0032] Secondly, the industrial-grade probe 5 is connected to the slide rail body 4 and installed on the guide rail 3 of the bracket body 2, and then the high-brightness fill light 7 is installed in the self-locking slide groove on the bracket body 2 through the sliding bracket;

[0033] Because the support body 2 is fixedly connected to the movable block 1, the movable block 1 is threadedly connected to the lifting screw rod 8, and the lifting screw rod 8 is rotatably mounted on the frame ring 9, and a handle is provided at the top of the lifting screw rod 8;

[0034] Therefore, when measuring, the operator can hold the handle, and then twist the lifting screw 8 so that the thread pushes the movable block 1 to slide back and forth on the fixed screw 10, so that the height of the industrial-grade probe 5 is consistent with the center point of the external test sample;

[0035] After the height adjustment of the industrial probe 5 is completed, the operator can turn the focus adjustment knob 12 or the light input adjustment knob 11 as needed to fine-tune the focus and light input of the industrial probe 5 to improve the shooting effect. At the same time, the industrial probe 5 is slidably mounted on the guide rail 3 through the slide rail body 4, and a locking button 6 is provided on the slide rail body 4;

[0036] Therefore, during use, the personnel can loosen the locking button 6 to release the fixation of the slide rail body 4, and then push the industrial-grade probe 5 to slide on the guide rail 3 to adjust the position of the industrial-grade probe 5. After the adjustment is completed, the locking button 6 can be rotated again to lock the position of the slide rail body 4 again to ensure that the industrial-grade probe 5 will not be shaken and slide during detection;

[0037] Afterwards, the brightness and illumination angle of the high-brightness fill light 7 can be adjusted according to the shooting position of the industrial-grade probe 5 in accordance with the existing technology to improve the shooting effect of the industrial-grade probe 5, so as to achieve accurate measurement of the creep deformation of small-sized samples in conjunction with the high-temperature creep endurance testing machine.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A non-contact creep deformation measuring device, characterized in that: It comprises a movable block (1) and two frame collars (9), wherein the two frame collars (9) are respectively installed above and below the movable block (1), and fixing screws (10) are arranged at the upper and lower ends of the frame collars (9) and the movable block (1); The fixing screw (10) is threadedly connected to the frame collar (9), and the fixing screw (10) is slidably connected to the movable block (1). A lifting screw (8) is provided at the upper and lower ends of the movable block (1) and one of the frame collars (9). The lifting screw (8) is threadedly connected to the movable block (1). The front end of the movable block (1) is fixedly connected to a bracket body (2). A guide rail (3) is fixedly installed on the top surface of the bracket body (2) and at one end away from the movable block (1). A slide rail body (4) is installed at the top end of the guide rail (3). An industrial-grade probe (5) is installed at the top end of the slide rail body (4). A self-locking slide rail is provided at the top end of the bracket body (2), and a sliding bracket is movably installed on the bracket body (2) through the self-locking slide rail. A high-brightness fill light (7) is installed at the top end of the sliding bracket.

2. A non-contact creep deformation measuring device according to claim 1, characterized in that: The bottom end of the lifting screw rod (8) is rotatably connected to the frame collar (9), and mounting holes are provided at the front positions of the upper and lower ends of the two frame collars (9).

3. A non-contact creep deformation measuring device according to claim 1, characterized in that: The industrial-grade probe (5) is provided with a light input adjustment knob (11) and a focal length adjustment knob (12) inside, and a locking button (6) is threadedly connected to the top end of the slide rail body (4), and the bottom end of the locking button (6) abuts against the top surface of the guide rail (3).

4. A non-contact creep deformation measuring device according to claim 2, characterized in that: The top end of the lifting screw rod (8) is fixedly connected to a handle, and the outer ring of the handle is provided with anti-slip patterns.

5. The non-contact creep deformation measuring device according to claim 3, characterized in that: The high-brightness fill light (7) is provided with a light source lamp socket at one end close to the industrial-grade measuring head (5), and a brightness adjustment knob is provided at the other end.

6. A non-contact creep deformation measuring device according to claim 5, characterized in that: The high-brightness fill light (7) is movably mounted on the top of the sliding bracket, and the angle of the high-brightness fill light (7) matches the measuring angle of the industrial-grade probe (5). The bottom end of the slide rail body (4) does not contact the top end of the bracket body (2), and the industrial-grade probe (5) is slidably connected to the guide rail (3) through the slide rail body (4).

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