Ultrasonic residual stress detection device

Abstract

The utility model relates to the technical field of residual stress detection, in particular to an ultrasonic residual stress detection device. Comprising an industrial personal computer, a support used for being fixed to the outer wall of a to-be-tested component, a pair of organic glass wedge blocks arranged on the support and attached to the surface of the to-be-tested component, a transmitting transducer and a receiving transducer, wherein the transmitting transducer and the receiving transducer are installed on the two organic glass wedge blocks respectively and electrically connected to the industrial personal computer, and the support is provided with a suction cup adsorbed to the outer wall of the to-be-tested component. The bracket is adsorbed on the side wall or the bottom wall of the to-be-tested component through the suction cup, so that the organic glass wedge block and the to-be-tested component are relatively fixed, the possibility that the organic glass wedge block falls off is effectively reduced, and the fixing convenience of the organic glass wedge block is improved.

Description

Technical Field

[0001] This application relates to the technical field of residual stress detection, and particularly to an ultrasonic residual stress detection device. Background Art

[0002] In machining, the generation of residual stress is inevitable. The influence of residual tensile stress in components usually shows harmful effects, such as reducing the fatigue strength of components, causing stress corrosion and brittle fracture, and reducing the dimensional accuracy of components. In engineering, attention is often only paid to working stress, while the residual stress existing in workpieces is ignored. Residual stress often plays an important role in metal corrosion cracking accidents. Therefore, the detection of residual stress in components is particularly important.

[0003] Stress detection using ultrasound is a non-destructive testing method. That is, a pair of plexiglass wedges are placed on the surface of the workpiece to be tested, and a transmitting transducer and a receiving transducer are respectively installed on the two plexiglass wedges. The ultrasonic transmitter in the industrial control computer emits an electrical pulse to excite the transmitting transducer to emit ultrasonic longitudinal waves, and critical refraction longitudinal waves are refracted on the surface of the specimen. The ultrasonic signal received by the receiving transducer is received by the data collector in the industrial control computer, so as to obtain the stress at the corresponding position. When detecting the side or bottom surface of a fixed component, it is necessary to fix the plexiglass wedges. Currently, the fixing method of the plexiglass wedges is relatively troublesome, reducing the detection efficiency. Therefore, further improvement is needed. Utility Model Content

[0004] In order to improve the fixing convenience of the plexiglass wedges, this application provides an ultrasonic residual stress detection device.

[0005] An ultrasonic residual stress detection device provided by this application adopts the following technical solution:

[0006] An ultrasonic residual stress detection device includes an industrial control computer, a bracket for fixing on the outer wall of the component to be tested, a pair of plexiglass wedges arranged on the bracket to fit on the surface of the component to be tested, and a transmitting transducer and a receiving transducer respectively installed on the two plexiglass wedges and electrically connected to the industrial control computer. The bracket is provided with a suction cup for adsorbing on the outer wall of the component to be tested.

[0007] By adopting the above technical solution, the bracket is adsorbed on the side wall or bottom wall of the component to be tested through the suction cup, so that the plexiglass wedges and the component to be tested are relatively fixed, effectively reducing the possibility of the plexiglass wedges falling off and improving the fixing convenience of the plexiglass wedges.

[0008] Preferably, the bracket includes a support plate and a pair of connecting rods respectively arranged on both sides of the support plate. The suction cup is fixedly connected to the end of the connecting rod, and the plexiglass wedge is connected to the support plate.

[0009] By adopting the above technical solution, the support plate provides a mounting carrier for the connecting rod, the connecting rod provides a mounting carrier for the suction cup, and the bracket is composed of the support plate and the connecting rod, which effectively reduces the overall weight of the bracket, thereby reducing the possibility of the bracket detaching from the component to be tested.

[0010] Preferably, the support plate is penetrated by a mounting hole for the connecting rod to slide through, the connecting rod is a screw rod, and the connecting rod is threadedly connected to a pair of limit nuts located above and below the support plate respectively, and the two limit nuts are respectively pressed against the upper end surface and the lower end surface of the support plate.

[0011] By adopting the above technical solution, the relative position of the limit nut and the connecting rod is adjusted by rotating the limit nut, thereby adjusting the relative position of the support plate and the suction cup according to the thickness of the plexiglass wedge, so that the detection surface of the plexiglass wedge fits against the surface of the component to be tested.

[0012] Preferably, a mounting block is fixedly connected between the two organic glass wedge blocks, and the mounting block is detachably connected to the bracket.

[0013] By adopting the above technical solution, the two organic glass wedges are fixed in one piece through the mounting block, and it is only necessary to mount the mounting block on the bracket, thereby improving the installation efficiency of the organic glass wedges.

[0014] Preferably, the mounting block is provided with a threaded hole, and the bracket is provided with a fixing bolt threadedly connected to the threaded hole.

[0015] By adopting the above technical solution, the mounting block and the bracket are detachably connected by fixing bolts.

[0016] Preferably, the bracket also includes a mounting plate arranged below the support plate, the length direction of the mounting plate is perpendicular to the length direction of the support plate, the plexiglass wedge block is slidably connected to the mounting plate, and the mounting plate is provided with an adjustment component for adjusting the sliding position of the plexiglass wedge block.

[0017] By adopting the above technical solution, the sliding position of the two organic glass wedges is adjusted through the adjustment component, thereby adjusting the distance between the two organic glass wedges to adapt to different detection conditions.

[0018] Preferably, the mounting plate is provided with a slide groove, and the organic glass wedge protrudes and is fixed with a slider which is slidably connected to the slide groove.

[0019] By adopting the technical solution, the sliding assembly of the organic glass wedge and the mounting plate is achieved through the sliding groove and the sliding block.

[0020] Preferably, the adjustment assembly includes an adjustment screw rotatably connected to the mounting plate, the adjustment screw thread is penetrated through the slider, and the axial direction of the adjustment screw is parallel to the sliding direction of the slider.

[0021] By adopting the above technical solution, by rotating the adjusting screw, the slider is limited by the thread of the adjusting screw and slides along the axial direction of the adjusting screw, thereby realizing the position adjustment of the organic glass wedge.

[0022] Preferably, the adjusting screw has a first thread segment and a second thread segment, the thread directions of the first thread segment and the second thread segment are opposite, and the two sliding blocks are respectively threadedly sleeved on the first thread segment and the second thread segment.

[0023] By adopting the above technical solution, when the adjusting screw is rotated, the two sliders slide towards each other or away from each other, thereby synchronously adjusting the sliding positions of the two organic glass wedges and improving the adjustment efficiency.

[0024] Preferably, the mounting plate is connected to the support plate by sliding in a direction approaching or away from the support plate, and the support plate is provided with an elastic member which forces the mounting plate to slide in a direction away from the support plate under normal conditions.

[0025] By adopting the above technical solution, when the sliding position of the organic glass wedge needs to be adjusted, a force is applied to the mounting plate to make the mounting plate slide toward the support plate. At this time, the elastic member undergoes elastic deformation and has elastic potential energy, thereby making the organic glass wedge detach from the surface of the component to be measured, reducing the possibility of the organic glass wedge scratching the surface of the component when sliding. After the adjustment is completed, the force applied to the mounting plate is removed, and the elastic member forces the mounting plate to slide away from the support plate, so that the organic glass wedge is pressed against the surface of the component.

[0026] In summary, the utility model has the following beneficial effects:

[0027] 1. The bracket is adsorbed on the side wall or bottom wall of the component to be tested through the suction cup, so that the organic glass wedge and the component to be tested are relatively fixed, effectively reducing the possibility of the organic glass wedge falling and improving the convenience of fixing the organic glass wedge;

[0028] 2. Adjust the relative position of the limit nut and the connecting rod by rotating the limit nut, thereby adjusting the relative position of the support plate and the suction cup according to the thickness of the organic glass wedge, so that the detection surface of the organic glass wedge fits and abuts against the surface of the component to be tested;

[0029] 3. The sliding position of the two plexiglass wedges is adjusted by adjusting the components, thereby adjusting the distance between the two plexiglass wedges to adapt to different detection conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of an ultrasonic residual stress detection device in Example 1;

[0031] Figure 2 is a schematic diagram of the structure of the bracket in Example 1;

[0032] Figure 3 is a schematic diagram of the connection structure between the support plate and the mounting block in Example 1;

[0033] Figure 4 is a schematic diagram of the connection structure of the temperature sensor in Example 1;

[0034] Figure 5 Schematic diagram of the connection structure of the plexiglass wedge in Example 2.

[0035] In the figure, 1. industrial computer; 2. bracket; 21. support plate; 22. connecting rod; 221. limit nut; 23. suction cup; 24. fixing bolt; 25. mounting plate; 251. guide rod; 252. anti-slip ring; 253. slide groove; 254. fixing plate; 255. spring; 26. side plate; 27. temperature sensor; 3. plexiglass wedge; 31. mounting block; 32. threaded hole; 33. slider; 4. transmitting transducer; 5. receiving transducer; 6. adjustment assembly; 61. adjusting screw; 62. knob. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-5 This application is described in further detail.

[0037] Embodiment 1:

[0038] The present application discloses an ultrasonic residual stress detection device, referring to Figure 1 , including an industrial computer 1, a bracket 2 for fixing on the outer wall of the component to be tested, a pair of organic glass wedges 3 arranged on the bracket 2 to fit on the surface of the component to be tested, and a transmitting transducer 4 and a receiving transducer 5 respectively installed on the two organic glass wedges 3 and electrically connected to the industrial computer 1.

[0039] The transmitting transducer 4 and the receiving transducer 5 are respectively electrically connected to the ultrasonic transmitter and the data collector of the industrial computer 1 through wires. The transmitting transducer 4 and the receiving transducer 5 are detachably connected to the inclined surface of the organic glass wedge 3 through threaded connection.

[0040] Reference Figure 2 , Figure 3 The bracket 2 includes a support plate 21 and a pair of connecting rods 22 respectively arranged on both sides of the support plate 21. The support plate 21 is penetrated with a mounting hole for the connecting rod 22 to slide through. The connecting rod 22 is a screw rod. The connecting rod 22 is threadedly connected with a pair of limit nuts 221 respectively located above and below the support plate 21. The two limit nuts 221 are respectively pressed against the upper end surface and the lower end surface of the support plate 21. The lower end of the connecting rod 22 is fixedly connected with a suction cup 23 adsorbed on the outer wall of the component to be tested.

[0041] In this embodiment, a mounting block 31 is fixedly connected between the two organic glass wedges 3, the mounting block 31 and the organic glass wedge 3 are integrally formed, and the mounting block 31 is detachably connected to the lower end surface of the support plate 21. Specifically, the mounting block 31 is provided with a threaded hole 32, and the bracket 2 is penetrated with a fixing bolt 24 threadedly connected to the threaded hole 32.

[0042] Reference Figure 4 The side wall of the support plate 21 is fixedly connected with a side plate 26 arranged in a Z shape. The side plate 26 is fixedly penetrated with a temperature sensor 27 for measuring the temperature of the component. The temperature sensor 27 abuts against the surface of the component and is electrically connected to the industrial computer 1.

[0043] The implementation principle of an ultrasonic residual stress detection device in this embodiment is as follows: the support plate 21 is adsorbed on the side wall or bottom wall of the component to be tested through the suction cup 23 on the connecting rod 22, so that the organic glass wedge block 3 and the component to be tested are relatively fixed, effectively reducing the possibility of the organic glass wedge block 3 falling off and improving the convenience of fixing the organic glass wedge block 3.

[0044] Embodiment 2:

[0045] The difference from Example 1 is that, referring to Figure 5 The bracket 2 further includes a mounting plate 25 disposed below the support plate 21, the length direction of the mounting plate 25 being perpendicular to the length direction of the support plate 21, the mounting plate 25 being slidably connected to the support plate 21 in a direction approaching or moving away from the support plate 21, and the support plate 21 being provided with an elastic member for forcing the mounting plate 25 to slide in a direction away from the support plate 21 under normal conditions. Specifically, a guide rod 251 slidably penetrating the support plate 21 is fixedly connected to the upper end surface of the mounting plate 25, an anti-slip ring 252 is fixedly connected to the upper portion of the guide rod 251, and the elastic member is a spring 255 located between the mounting plate 25 and the support plate 21, one end of the spring 255 is fixedly connected to the lower end surface of the support plate 21, and the other end of the spring 255 is fixedly connected to the upper end surface of the mounting plate 25.

[0046] The organic glass wedge 3 is slidably connected to the mounting plate 25. Specifically, the mounting plate 25 is provided with a slide groove 253, and a slider 33 slidably connected to the slide groove 253 is protruded and fixed on the organic glass wedge 3. The mounting plate 25 is fixedly connected to the two sides with a fixing plate 254, and the fixing plate 254 is provided with an adjustment component 6 for adjusting the sliding position of the organic glass wedge 3. The adjustment component 6 includes an adjustment screw 61 and a knob 62 rotatably connected to the fixing plate 254. The axial direction of the adjustment screw 61 is parallel to the sliding direction of the slider. The adjustment screw 61 has a first thread segment and a second thread segment, and the thread directions of the first thread segment and the second thread segment are opposite. The two sliders 33 are respectively threadedly sleeved on the first thread segment and the second thread segment. The knob 62 is coaxially fixedly connected to the end of the adjustment screw 61.

[0047] The implementation principle of this embodiment is: when the sliding position of the organic glass wedge block 3 needs to be adjusted, a force is applied to the mounting plate 25, so that the mounting plate 25 slides toward the direction close to the support plate 21. At this time, the spring 255 undergoes elastic deformation and has elastic potential energy, so that the organic glass wedge block 3 is separated from the surface of the component to be measured. The knob 62 is turned to drive the adjustment screw 61 to rotate, so as to synchronously adjust the two organic glass wedge blocks 3 to slide toward or away from each other. After the adjustment is completed, the force applied to the mounting plate 25 is removed, and the spring 255 forces the mounting plate 25 to slide in the direction away from the support plate 21, so that the organic glass wedge block 3 is pressed against the surface of the component.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ultrasonic residual stress detection device, characterized in that: The invention comprises an industrial computer (1), a bracket (2) for fixing on the outer wall of the component to be tested, a pair of organic glass wedges (3) arranged on the bracket (2) to fit on the surface of the component to be tested, and a transmitting transducer (4) and a receiving transducer (5) respectively mounted on the two organic glass wedges (3) and electrically connected to the industrial computer (1); the bracket (2) is provided with a suction cup (23) adsorbed on the outer wall of the component to be tested.

2. The ultrasonic residual stress detection device according to claim 1, characterized in that: The support (2) comprises a support plate (21) and a pair of connecting rods (22) respectively arranged on both sides of the support plate (21); the suction cup (23) is fixedly connected to the end of the connecting rod (22); and the organic glass wedge (3) is connected to the support plate (21).

3. The ultrasonic residual stress detection device according to claim 2, characterized in that: The support plate (21) is provided with a mounting hole through which a connecting rod (22) is slidably inserted. The connecting rod (22) is a screw rod. The connecting rod (22) is threadedly connected to a pair of limiting nuts (221) respectively located above and below the support plate (21). The two limiting nuts (221) are respectively pressed against the upper end surface and the lower end surface of the support plate (21).

4. The ultrasonic residual stress detection device according to claim 1, characterized in that: A mounting block (31) is fixedly connected between the two organic glass wedge blocks (3), and the mounting block (31) is detachably connected to the bracket (2).

5. The ultrasonic residual stress detection device according to claim 4, characterized in that: The mounting block (31) is provided with a threaded hole (32), and the bracket (2) is provided with a fixing bolt (24) threadedly connected to the threaded hole (32).

6. The ultrasonic residual stress detection device according to claim 2, characterized in that: The bracket (2) further comprises a mounting plate (25) arranged below the support plate (21); the length direction of the mounting plate (25) is perpendicular to the length direction of the support plate (21); the organic glass wedge block (3) is slidably connected to the mounting plate (25); and the mounting plate (25) is provided with an adjustment component (6) for adjusting the sliding position of the organic glass wedge block (3).

7. The ultrasonic residual stress detection device according to claim 6, characterized in that: The mounting plate (25) is provided with a slide groove (253), and a slider (33) is protrudingly fixed on the organic glass wedge (3) and is slidably connected to the slide groove (253).

8. The ultrasonic residual stress detection device according to claim 7, characterized in that: The adjustment assembly (6) comprises an adjustment screw (61) rotatably connected to the mounting plate (25); the adjustment screw (61) is threadedly inserted into the slider (33); and the axial direction of the adjustment screw (61) is parallel to the sliding direction of the slider (33).

9. The ultrasonic residual stress detection device according to claim 8, characterized in that: The adjusting screw rod (61) comprises a first thread segment and a second thread segment, the thread directions of the first thread segment and the second thread segment are opposite, and the two sliding blocks (33) are respectively threadedly sleeved on the first thread segment and the second thread segment.

10. The ultrasonic residual stress detection device according to claim 6, characterized in that: The mounting plate (25) is connected to the support plate (21) by sliding in a direction approaching or moving away from the support plate (21), and the support plate (21) is provided with an elastic member that forces the mounting plate (25) to slide in a direction away from the support plate (21) under normal conditions.

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