Residual stress detection device

Abstract

The utility model provides a residual stress detection device which comprises a movable base, a plurality of movable wheels are arranged at the bottom of the movable base, a supporting mechanism is arranged in the movable base, a protective cover plate is arranged at the top of the movable base, and an adjusting mechanism is arranged in the protective cover plate. An ultrasonic guided-wave high-voltage excitation circuit board and a guided-wave receiving circuit board are connected to two moving ends of the adjusting mechanism respectively, a guided-wave transmitting probe is connected to the ultrasonic guided-wave high-voltage excitation circuit board, and a guided-wave receiving probe is connected to the guided-wave receiving circuit board. Compared with the prior art, the steel residual stress detection device has the following beneficial effects that through the design of the supporting mechanism and the moving mechanism, the device can be stably supported, and residual stress detection can be carried out on different types of steel while a detection part is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a residual stress detection device belongs to steel detection field. BACKGROUND

[0002] The hot rolling residual stress in hot rolled section steel is generated due to uneven cooling after hot rolling, and its occurrence mechanism is that when the hot rolling of the section steel is finished, the temperature of each part of the section is basically the same, but the edge, sharp corner and thin part cool and solidify faster due to more air contact surface, and the remaining part cools and solidifies slower. The first cooling part often forms strong constraint to prevent the free shrinkage of the metal of the later cooling part, so that the part cooled later is often subjected to tension, and complex residual stress distribution is generated in the section steel. Therefore, after the steel is manufactured, the residual stress of the steel needs to be detected to prevent defective products from being put into the market.

[0003] A residual stress testing device is disclosed in Chinese patent with authorized announcement No. CN205449361U. It comprises a waveguide transmitting probe electrically connected with an ultrasonic waveguide high-voltage excitation circuit board and placed at one end of a test component, and two waveguide receiving probes electrically connected with waveguide receiving circuit boards, respectively, and arranged at the other end of the test component along the front and rear directions of the stress testing line at a distance apart. When testing, the time difference of the waveguide receiving probes receiving the waveguide can be calculated by the waveguide receiving circuit boards.

[0004] According to the related technology in the above, the inventors believe that in the measurement process, different models of steel are measured, and each time the different models of steel are measured, the position of the ultrasonic waveguide high-voltage excitation circuit board and the waveguide receiving circuit board needs to be manually adjusted by artificial, thereby causing trouble in detection. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a residual stress detection device.

[0006] In order to achieve the above-mentioned purpose, the utility model is realized by the following technical scheme:

[0007] A residual stress detection device, comprising a mobile base, the bottom of the mobile base is provided with a plurality of mobile wheels, the inside of the mobile base is provided with a supporting mechanism, the top of the mobile base is provided with a protective cover plate, the inside of the protective cover plate is provided with an adjusting mechanism, the two moving ends of the adjusting mechanism are respectively connected with an ultrasonic waveguide high-voltage excitation circuit board and a waveguide receiving circuit board, the ultrasonic waveguide high-voltage excitation circuit board is connected with a waveguide transmitting probe, and the waveguide receiving circuit board is connected with a waveguide receiving probe.

[0008] Further, the supporting mechanism comprises two inner cavities formed in the two sides of the moving base, and the two inner cavities are communicated through a communication groove, and a gas cylinder is arranged at the inner top center of the communication groove, and the bottom output end of the gas cylinder is connected with a horizontal plate, and the horizontal plate vertically slides in the communication groove, and the end of the horizontal plate penetrates into the inner cavities.

[0009] Further, the supporting mechanism further comprises a group of mounting seats symmetrically mounted on the two sides of the inner cavities, and a rotating rod is movably mounted on the mounting seat, and the end of the rotating rod is movably connected with a sliding seat, and the top of the sliding seat is slidably connected with the bottom end of the horizontal plate, and a sliding sleeve is slidably connected on the rotating rod, and a supporting plate is movably connected on the sliding sleeve, and the supporting plate vertically slides in the inner cavities, and the bottom end of the supporting plate penetrates into the lower side of the moving base, and the communication groove is provided with a limiting assembly matched with the horizontal plate.

[0010] Further, the bottom of the horizontal plate is provided with a sliding groove, the top of the sliding seat is slidably connected in the sliding groove, and the bottom of the inner cavities is provided with a through hole penetrating into the bottom of the moving base, and the supporting plate vertically slides in the through hole.

[0011] Further, the limiting assembly comprises a moving cavity arranged in the inner wall of the moving base, and the two side openings of the moving cavity penetrate into the communication groove and the outer surface of the moving base, respectively, and a sliding plate is slidably connected in the moving cavity, and a slope plate is fixed on one side of the middle of the sliding plate, and the slope end of the slope plate is connected with the opening penetrating into the communication groove, and a plurality of horizontal rods are fixed on the other end of the sliding plate, and springs are arranged on the outer surface of the horizontal rods and between the sliding plate and the inner wall of the moving cavity, and the end of the horizontal rod penetrates into the outer side of the moving base through the other opening and is fixed with a handle.

[0012] Further, the handle is movably connected with a movable block near the end of the outer surface of the side of the moving base, and the movable block is movably connected with a plug rod, and the outer surface of the moving base is provided with a plug groove matched with the plug rod, and the outer surface of the handle is provided with a containing groove matched with the movable block and the plug rod.

[0013] Further, the moving mechanism comprises two bidirectional screw rods rotationally connected inside the protective cover plate, a protective box fixed to the side edge of the protective cover plate, smooth ends of the bidirectional screw rods penetrating into the protective box and connected with driven gears, a driving motor fixed on the inner wall of the protective box, a driving gear connected with the side surface output end of the driving motor, the driving gear being engaged with the two driven gears, a space being left between the two driven gears, and two nut moving bases one and two being threadedly engaged with the two ends of the bidirectional screw rods respectively, the top of each of the two nut moving bases being provided with a rotary motor, and the top output end of each of the two rotary motors being connected with the bottom of each of the ultrasonic guided wave high-voltage excitation circuit board and the guided wave receiving circuit board.

[0014] The utility model discloses the beneficial effects of:

[0015] Through the design of the supporting mechanism, the horizontal plate is lowered by the cylinder, the horizontal plate is extruded to the sliding seat through the end sliding groove to push the rotary rod to rotate, the rotary rod rotates to push the supporting plate to descend through the sliding sleeve, the supporting plate descends and contacts the ground at the same time and lifts the device, so that the moving wheel at the bottom of the device is separated from the ground, and the stability of the device is improved.

[0016] Through the design of the limiting assembly, in the process that the horizontal plate is vertically lowered, the inclined plate penetrating into the communicating groove is extruded by the horizontal plate, under the extrusion of the inclined surface, the inclined plate moves to the inside of the moving cavity, the inclined plate moves and drives the sliding plate and the horizontal rod to move, the sliding plate moves and extrudes the spring, when the horizontal plate is lowered below the inclined plate, under the action of the spring, the inclined plate is reset and moves to the communicating groove, the flat surface of the inclined plate plays a limiting action on the horizontal plate, so that the horizontal plate and the supporting plate can play a stable supporting role.

[0017] Through the design of the movable block, the insertion rod and the insertion slot, after the device is used, the supporting plate needs to be stored in the moving base for facilitating the movement of the device, at this time, the handle is pulled outwards, the handle pulls the inclined plate to move to the inside of the moving cavity through the horizontal rod, at this time, the insertion rod and the movable block are buckled and rotated around the movable block as the fulcrum, so that the insertion rod is rotated by one hundred and eighty degrees, at this time, the handle can be loosened, under the action of the spring, the handle is reset and moves to the moving base and drives the insertion rod to be inserted into the insertion slot on the outer surface of the moving base, so that the pulled-out handle is limited, at this time, the horizontal plate is not limited by the limiting assembly, and can be vertically moved immediately.

[0018] Through the design of the moving mechanism, the driving motor drives the driving gear to rotate, the driving gear drives the two driven gears to rotate, the driven gears drive the bidirectional threaded lead screw to rotate, the bidirectional threaded lead screw drives the nut moving seat one and the nut moving seat two to move close to each other or away from each other through the thread, and then the ultrasonic guided wave high-voltage excitation circuit board and the guided wave receiving circuit board are adjusted to move to the positions of the two ends of the steel to be measured and stop, and then the guided wave transmitting probe and the guided wave receiving probe are placed on the steel to be measured, so that the residual stress detection of different types of steels can be carried out. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is a total structure schematic diagram of the residual stress detection device of the present application.

[0021] Figure 2 It is a moving mechanism structure schematic diagram of the residual stress detection device of the present application.

[0022] Figure 3 It is a support mechanism structure schematic diagram of the residual stress detection device of the present application.

[0023] Figure 4 It is a support mechanism local structure schematic diagram of the residual stress detection device of the present application.

[0024] Figure 5 It is a limiting component structure schematic diagram of the residual stress detection device of the present application.

[0025] In the figure, 1 is a moving base, 2 is a moving wheel, 3 is an inner cavity, 4 is a communication groove, 5 is a gas cylinder, 6 is a cross plate, 7 is a mounting seat, 8 is a rotating rod, 9 is a sliding seat, 10 is a sliding sleeve, 11 is a support plate, 12 is a sliding plate, 13 is an inclined plate, 14 is a cross rod, 15 is a spring, 16 is a handle, 17 is a movable block, 18 is a plug-in rod, 19 is a bidirectional threaded lead screw, 20 is a driven gear, 21 is a driving motor, 22 is a driving gear, 23 is a nut moving seat one, 24 is an ultrasonic guided wave high-voltage excitation circuit board, 25 is a guided wave transmitting probe, 26 is a nut moving seat two, 27 is a guided wave receiving circuit board, 28 is a guided wave receiving probe, 29 is a protective cover plate, and 30 is a protective box. DETAILED DESCRIPTION

[0026] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-5 The utility model provides a kind of residual stress detection device technical scheme, including mobile base 1, the bottom of mobile base 1 is equipped with several mobile wheels 2, the inside of mobile base 1 is equipped with support mechanism, the top of mobile base 1 is equipped with protective cover 29, the inside of protective cover 29 is equipped with adjusting mechanism, two mobile ends of adjusting mechanism are respectively connected with ultrasonic guided wave high voltage excitation circuit board 24 and guided wave receiving circuit board 27, guided wave transmitting probe 25 is connected on ultrasonic guided wave high voltage excitation circuit board 24, guided wave receiving probe 2 is connected on guided wave receiving circuit board 27;By the design of support mechanism and moving mechanism, the device can be stably supported, and residual stress detection can be carried out on different types of steel while protecting the detection components.

[0028] Please refer to Figures 3-4The supporting mechanism comprises two inner cavities 3 opened in the inside of the moving base 1, the two inner cavities 3 are communicated through a communicating groove 4, the inner top center of the communicating groove 4 is provided with a gas cylinder 5, the bottom output end of the gas cylinder 5 is connected with a horizontal plate 6, the horizontal plate 6 vertically slides in the communicating groove 4, the end part of the horizontal plate 6 penetrates into the inside of the inner cavity 3, the supporting mechanism further comprises a set of mounting seats 7 symmetrically installed on the inside of the two inner cavities 3, the mounting seat 7 is movably installed with a rotating rod 8, the end part of the rotating rod 8 is movably connected with the bottom of a sliding seat 9, the top of the sliding seat 9 is slidably connected with the bottom end part of the horizontal plate 6, the rotating rod 8 is slidably connected with a sliding sleeve 10, the sliding sleeve 10 is movably connected with a supporting plate 11, the supporting plate 11 is vertically slidably connected in the inner cavity 3, the bottom end of the supporting plate 11 penetrates to the below of the moving base 1, the communicating groove 4 is provided with a limiting assembly matched with the horizontal plate 6, the bottom of the horizontal plate 6 is provided with a sliding groove, the top of the sliding seat 9 is slidably connected in the inside of the sliding groove, the bottom of the inner cavity 3 is provided with a through hole penetrating to the bottom of the moving base 1, the supporting plate 11 is vertically slidably connected in the through hole; through the design of the supporting mechanism, the horizontal plate 6 is pushed down by the gas cylinder 5, the horizontal plate 6 is pushed to rotate the rotating rod 8 through the extrusion of the end sliding groove to the sliding seat 9, the rotating rod 8 is pushed to descend the supporting plate 11 through the sliding sleeve 10, the supporting plate 11 is in contact with the ground and lifts up the device at the same time, so that the moving wheels 2 at the bottom of the device are separated from the ground, and then the stability of the device is improved.

[0029] Refer to Figure 5The limiting assembly comprises a moving cavity arranged in the inner wall of the moving base 1, the openings on both sides of the moving cavity respectively penetrate to the communicating groove 4 and the outer surface of the moving base 1, the sliding plate 12 is transversely and slidingly connected inside the moving cavity, the inclined plane plate 13 is fixed on one side of the middle part of the sliding plate 12, the inclined plane end of the inclined plane plate 13 is arranged on one side of the opening penetrating to the inside of the communicating groove 4, a plurality of horizontal rods 14 are fixed on the other end of the sliding plate 12, the springs 15 are arranged on the outer surface of the horizontal rods 14 and between the sliding plate 12 and the inner wall of the moving cavity, the end of the horizontal rod 14 is connected and fixed with the handle 16 through the opening on the other side penetrating to the outside of the moving base 1, through the design of the limiting assembly, in the process of the vertical downward movement of the horizontal plate 6, the horizontal plate 6 will extrude the inclined plane plate 13 penetrating to the communicating groove 4, under the extrusion of the inclined plane, the inclined plane plate 13 will move to the inside of the moving cavity, the movement of the inclined plane plate 13 will drive the sliding plate 12 and the horizontal rod 14 to move, the movement of the sliding plate 12 will extrude the spring 15, when the horizontal plate 6 is lowered below the inclined plane plate 13, under the action of the spring 15, the inclined plane plate 13 is reset and moves to the communicating groove 4, the flat surface of the inclined plane plate 13 plays a limiting action on the horizontal plate 6, so that the horizontal plate 6 and the supporting plate 11 can play a stable supporting role, the movable block 17 is movably connected on the outer surface end of the side of the moving base 1 close to the handle 16, the plug rod 18 is fixed on one side of the middle part of the movable block 17, the outer surface of the moving base 1 is provided with the plug groove matched with the plug rod 18, and the outer surface of the handle 16 is provided with the accommodating groove matched with the movable block 17 and the plug rod 18; through the design of the movable block 17, the plug rod 18 and the plug groove, after the use of the device, the supporting plate 11 needs to be stored in the inside of the moving base 1 to facilitate the movement of the device, at this time, the handle 16 is pulled outwards, the handle 16 pulls the inclined plane plate 13 to move to the inside of the moving cavity through the horizontal rod 14, at this time, the plug rod 18 and the movable block 17 are buckled, so that they rotate around the movable block 17 as the fulcrum, so that the plug rod 18 rotates by one hundred and eighty degrees, at this time, the handle 16 can be loosened, under the action of the spring 15, the handle 16 is reset and moves to the moving base 1 and drives the plug rod 18 to be inserted into the plug groove on the outer surface of the moving base 1, so as to limit the pulled-out handle 16, at this time, the horizontal plate 6 is not limited by the limiting assembly, and can be vertically moved immediately.

[0030] Referring to Figures 3-4The moving mechanism includes two bidirectional threaded screws 19 rotatably connected inside the protective cover plate 29 and a protective box 30 fixed to the side of the protective cover plate 29. The smooth end of the bidirectional threaded screw 19 passes through the protective box 30 and is connected to the driven gear 20. A drive motor 21 is fixed on the inner wall of the protective box 30. The output end of the drive motor 21 is connected to a driving gear 22. The driving gear 22 meshes with the two driven gears 20, and there is a gap between the two driven gears 20. The two ends of the bidirectional threaded screw 19 are respectively threaded with a nut moving seat 1 23 and a nut moving seat 26. Both the nut moving seat 1 23 and the nut moving seat 26 are equipped with a rotary motor on their tops. The top output end of the rotary motor is connected to the bottom of both the ultrasonic guided wave high-voltage excitation circuit board 24 and the guided wave receiving circuit board 27. Through the design of the moving mechanism, the drive motor 21 drives the active gear 22 to rotate, the active gear 22 drives the two driven gears 20 to rotate, and the driven gears 20 drive the bidirectional threaded screw 19 to rotate. The bidirectional threaded screw 19 drives the nut moving seat 1 23 and the nut moving seat 26 to move closer or further away at the same time through the thread, thereby adjusting the ultrasonic guided wave high-voltage excitation circuit board 24 and the guided wave receiving circuit board 27 to the positions at both ends of the steel to be tested and then stopping. Then, the guided wave transmitting probe 25 and the guided wave receiving probe 28 are placed on the steel to be tested to detect residual stress in different types of steel.

[0031] In use, the worker holds the push handle and moves the device to the side of the steel to be tested. Simultaneously, ensures that the length of the device's moving base 1 is aligned with the length of the steel. The device is then supported by the support mechanism. Next, the rotary motors on top of the nut moving base 1 23 and nut moving base 26 are activated. These motors rotate the ultrasonic guided wave high-voltage excitation circuit board 24 and the guided wave receiving circuit board 27 by 90 degrees, causing the guided wave transmitting probe 25 and the guided wave receiving probe 28 on the ultrasonic guided wave high-voltage excitation circuit board 24 and the guided wave receiving circuit board 27 to rotate out of the protective cover plate 29, facilitating testing. In use, the drive motor 21 is restarted, which drives the active gear 22 to rotate. The active gear 22 drives the two driven gears 20 to rotate, and the driven gears 20 drive the bidirectional threaded screw 19 to rotate. The bidirectional threaded screw 19 drives the nut moving seat 1 23 and the nut moving seat 26 to move closer or further away simultaneously through the thread, thereby adjusting the ultrasonic guided wave high-voltage excitation circuit board 24 and the guided wave receiving circuit board 27 to move to the positions at both ends of the steel to be tested and then stop. Then, the guided wave transmitting probe 25 and the guided wave receiving probe 28 are placed on the steel to be tested to perform residual stress detection on different types of steel.

[0032] Although the present specification is described in terms of embodiments, not every embodiment exhibits every characteristic or implements every combination of features described in the present specification. In addition, not every embodiment includes every embodiment described in the present specification. The description herein of any embodiment, including any preferred embodiment, is thus intended to be illustrative, and not restrictive. The scope of the present application is thus intended to be broad, and will be set forth in the following claims.

Claims

1. A residual stress detection device characterized by comprising: The utility model provides mobile base (1), the bottom of mobile base (1) is equipped with a plurality of mobile wheels (2), the inside of mobile base (1) is equipped with support mechanism, the top of mobile base (1) is equipped with protective cover (29), the inside of protective cover (29) is equipped with adjusting mechanism, two mobile ends of adjusting mechanism are connected with ultrasonic guided wave high -voltage excitation circuit board (24) and guided wave receiving circuit board (27) respectively, guided wave transmitting probe (25) is connected on ultrasonic guided wave high -voltage excitation circuit board (24), guided wave receiving circuit board (27) is connected with guided wave receiving probe (28).

2. The residual stress detection device according to claim 1, wherein The support mechanism comprises two inner cavities (3) formed in the inside of the mobile base (1) on both sides, the two inner cavities (3) are communicated through a communication groove (4), a gas cylinder (5) is arranged at the inner top center of the communication groove (4), the bottom output end of the gas cylinder (5) is connected with a horizontal plate (6), the horizontal plate (6) vertically slides in the communication groove (4), and the end of the horizontal plate (6) penetrates into the inner cavity (3).

3. A residual stress detection device according to claim 2, wherein The support mechanism further comprises a set of mounting seats (7) symmetrically mounted on both sides of the inner cavity (3), a rotating rod (8) is movably mounted on the mounting seat (7), the end of the rotating rod (8) is movably connected with the bottom of a sliding seat (9), the top of the sliding seat (9) is slidably connected with the bottom end of the horizontal plate (6), a sliding sleeve (10) is slidably connected with the rotating rod (8), a supporting plate (11) is movably connected with the sliding sleeve (10), the supporting plate (11) vertically slides in the inner cavity (3), the bottom end of the supporting plate (11) penetrates into the lower part of the mobile base (1), and the communication groove (4) is provided with a limiting assembly matched with the horizontal plate (6).

4. A residual stress detection device according to claim 3, wherein The bottom of the horizontal plate (6) is provided with a sliding groove at both ends, the top of the sliding seat (9) is slidably connected in the sliding groove, the bottom of the inner cavity (3) is provided with a through hole penetrating into the bottom of the mobile base (1), and the supporting plate (11) vertically slides in the through hole.

5. A residual stress detection device according to claim 4, wherein The limiting assembly comprises a moving cavity arranged in the inner wall of the mobile base (1), the openings on both sides of the moving cavity penetrate into the communication groove (4) and the outer surface of the mobile base (1) respectively, a sliding plate (12) is slidably connected in the moving cavity, an inclined plate (13) is fixed to the middle of one side of the sliding plate (12), the inclined plate (13) is arranged in the opening on the side of the inclined end, and the opening penetrates into the communication groove (4), a plurality of horizontal rods (14) are fixed to the other end of the sliding plate (12), springs (15) are arranged on the outer surface of the horizontal rods (14) and between the sliding plate (12) and the inner wall of the moving cavity, and the ends of the horizontal rods (14) penetrate into the outside of the mobile base (1) through the other opening and are fixedly connected with a handle (16).

6. A residual stress detection device according to claim 5, wherein The handle (16) is movably connected with a movable block (17) near the end of the outer surface of one side of the mobile base (1), one side of the movable block (17) is fixedly connected with a plug-in rod (18), the outer surface of the mobile base (1) is provided with a plug-in slot matched with the plug-in rod (18), and the outer surface of the handle (16) is provided with an accommodating slot matched with the movable block (17) and the plug-in rod (18).

7. A residual stress detection device according to claim 6, wherein The moving mechanism comprises two bidirectional screw rods (19) rotatably connected inside the protective cover plate (29) and a protective box (30) fixed on the side of the protective cover plate (29), the smooth ends of the bidirectional screw rods (19) penetrate into the protective box (30) and are connected with driven gears (20), a driving motor (21) is fixed on the inner wall of the protective box (30), the side output end of the driving motor (21) is connected with a driving gear (22), the driving gear (22) is engaged with the two driven gears (20), a space is left between the two driven gears (20), the two ends of the bidirectional screw rod (19) are respectively threadedly engaged with a nut moving seat one (23) and a nut moving seat two (26), the top of the nut moving seat one (23) and the nut moving seat two (26) is provided with a rotary motor, and the top output ends of the two rotary motors are respectively connected with the bottom of the ultrasonic guided wave high-voltage excitation circuit board (24) and the guided wave receiving circuit board (27).

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