Steel plate surface detection equipment

Abstract

The present application relates to a steel plate surface detection device, and relates to the field of steel plate surface defect detection. It includes a frame, and guide devices for guiding the steel plate are arranged on both sides of the frame, and a detection device for detecting defects on both sides of the steel plate is arranged inside the frame, and a spraying device for marking the defect position of the steel plate is arranged at one end of the frame; the detection device includes two mounting plates, and probes for surface defect detection of the steel plate are detachably installed on the two mounting plates through a connecting component, and the steel plate is located between the two probes. Support wheels for supporting the steel plate are arranged on the two mounting plates, and the support wheels are used to limit the distance between the steel plate and the corresponding probe. The frame is provided with a control component for pushing the two mounting plates to clamp the steel plate. The present application has the function of improving the defect detection accuracy of the steel plate surface.

Description

Technical Field

[0001] The present application relates to the field of steel plate surface defect detection, and in particular to a steel plate surface detection device. Background Art

[0002] Steel plate surface inspection equipment is a machine used to detect defects on both surfaces of steel plates to ensure the quality of the steel plates before leaving the factory. A common steel plate surface inspection device is an eddy current flaw detector, which is a non-destructive flaw detection technology that uses an AC electromagnetic coil to induce eddy currents on the surface of metal components.

[0003] When performing eddy current flaw detection on steel plates, a gap of 0.5 mm is required between the probe of the eddy current flaw detector and the surface of the steel plate to ensure the accuracy of defect detection on the surface of the steel plate.

[0004] The thickness of the same steel plate is uneven and the tolerance is large. During the surface inspection of different thickness positions of the steel plate, the distance between the probe and the steel plate changes continuously, which seriously affects the defect detection accuracy of the steel plate surface. Summary of the invention

[0005] In order to improve the accuracy of steel plate surface defect detection, the present application provides a steel plate surface detection device.

[0006] The steel plate surface detection equipment provided in this application adopts the following technical solution:

[0007] A steel plate surface detection device, comprising a frame, wherein both sides of the frame are provided with guide devices for guiding the steel plate, the frame is provided with a detection device for detecting defects on both sides of the steel plate, and one end of the frame is provided with a spraying device for marking the defect position of the steel plate;

[0008] The detection device includes two mounting plates, on which probes for performing surface defect detection on the steel plate are detachably mounted via connecting components, the steel plate is located between the two probes, and the two mounting plates are provided with support wheels for supporting the steel plate, the support wheels are used to limit the distance between the steel plate and the corresponding probes, and the frame is provided with a control component for pushing the support wheels of the two mounting plates to clamp the steel plate.

[0009] By adopting the above technical solution, the steel plate enters from one end of the frame under the guidance of the guide device, passes between the two probes, and then passes out from the other end of the frame. During the surface defect detection of the steel plate, the control component drives the two mounting plates to clamp the steel plate, and under the action of the support wheels, the probe always maintains a preset distance from the steel plate. When the thickness of the steel plate changes, under the action of the control component, the support wheels corresponding to the two mounting plates are pressed against the steel plate, so that the distance between the two probes and the steel plate remains unchanged. Reducing the change in the distance between the probe and the steel plate due to the change in the thickness of the steel plate is conducive to improving the defect detection accuracy of the steel plate surface.

[0010] When the probe is detachably mounted on the mounting plate through the connecting assembly, it is convenient for the operator to maintain and replace the probe.

[0011] Optionally, the two mounting plates are installed in the frame through a mounting frame, and the control component includes a plurality of guide bolts threadedly connected to one of the mounting plates, and a plurality of guide sleeves are fixedly connected to the mounting frame corresponding to the guide bolts, the guide bolts correspond to the guide sleeves one by one, and each guide bolt is slidably inserted into the corresponding guide sleeve, and each guide bolt is sleeved with a push spring, and the push spring is used to push the corresponding mounting plate to be pressed against the steel plate.

[0012] By adopting the above technical solution, the push spring pushes the corresponding mounting plate to move toward the steel plate, so that the two relative mounting plates clamp the steel plate. When the thickness of the steel plate changes, the push spring can automatically adjust the distance between the two relative mounting plates according to the thickness of the steel plate, so that the corresponding support wheels on the two relative mounting plates are pressed against the surface of the steel plate, thereby keeping the distance between the two probes and the surface of the steel plate unchanged.

[0013] Optionally, a movable seat is slidably provided on both sides of each of the mounting frames, and each of the movable seats is provided with a guide wheel for guiding the steel plate, the guide wheels on the two movable seats correspond to each other one by one, and a gap is left between the two corresponding guide wheels for the steel plate to pass through, and the mounting frame is rotatably connected to the position of the movable seat corresponding to the first stud, the first stud passes through the corresponding movable seat, and is threadedly connected to the movable seat.

[0014] By adopting the above technical solution, the operator drives the corresponding moving seat to move by rotating each first stud, thereby driving the two relative rollers to move closer to or away from each other to adapt to the thickness change of the steel plate and play a supporting and guiding role for the steel plate.

[0015] Optionally, a plurality of the detection devices are arranged in the frame, and a base plate is fixedly connected to each mounting frame position corresponding to each mounting frame in the frame, each mounting frame is slidably arranged on the corresponding base plate, and each base plate is rotatably connected to a second stud, the second stud passes through the corresponding mounting frame, and is threadedly connected to the mounting frame.

[0016] By adopting the above technical solution and setting up multiple detection devices, the operator can adjust the position of the mounting frame in the frame by rotating each second stud, and then adjust the width direction position of the probe on the steel plate, so as to perform surface defect detection at different positions in the width direction of the steel plate to adapt to the change in thickness of the steel plate.

[0017] Optionally, the connecting assembly includes two guide seats fixedly connected to the mounting plate, the probe is located between the two guide seats, and the probe is provided with a guide groove for the two guide seats to slide, and the mounting plate is provided with a fixing unit for fixing the probe.

[0018] By adopting the above technical solution, when the operator installs the probe, the guide groove on the probe is aligned with the corresponding guide seat, so that the probe can slide between the corresponding two guide seats, and then the operator fixes the probe between the two guide seats through the fixing unit to fix the position of the probe on the mounting plate.

[0019] Optionally, the fixing unit includes a sleeve fixedly connected to one of the guide seats, a limiting ring fixedly connected inside the sleeve, a pin shaft slidingly penetrated inside the limiting ring, an insertion rod fixedly connected to one end of the pin shaft, a through hole for the insertion rod to pass through is provided on the guide seat corresponding to the insertion rod, a slot for the insertion rod to be inserted is provided on the probe, a reset spring is sleeved on the pin shaft between the insertion rod and the limiting ring, the reset spring is used to push the insertion rod into the slot, a protrusion is fixedly connected to one end of the pin shaft away from the insertion rod, and a accommodating groove for the insertion of the protrusion is provided on the sleeve.

[0020] By adopting the above technical solution, when fixing the probe, the operator first overcomes the elastic force of the reset spring to pull the protrusion, and then the operator rotates the protrusion so that the protrusion abuts against the end of the sleeve away from the through hole, and the insertion rod is retracted into the sleeve. The operator then slides the probe into the corresponding two guide seats so that the slot is aligned with the through hole, and then the operator rotates the protrusion so that the protrusion is aligned with the receiving groove. Under the action of the elastic force of the reset spring, the protrusion is inserted into the receiving groove, and the insertion rod passes through the through hole and is inserted into the slot, thereby limiting the probe from sliding between the two guide seats, and achieving the position fixation of the probe on the mounting plate.

[0021] Optionally, each of the mounting plates is slidably provided with a plurality of movable plates, each of the movable plates corresponds to a probe, each of the probes is used for performing surface defect detection on the steel plate, and each of the mounting plates is provided with a driving component for controlling the movement of the movable plate on the mounting plate.

[0022] By adopting the above technical solution, the operator adjusts the position of each movable plate on the same mounting plate through the driving assembly, and then adjusts the position of each probe along the width direction of the steel plate, so that the device can perform surface defect detection on steel plates of different widths within a certain range.

[0023] Optionally, two movable plates are arranged on the mounting plate, and the driving assembly includes two sprockets rotatably connected to the mounting plate, a chain is arranged around the two sprockets, and the two movable plates are fixedly connected to the chain via a connecting plate, and the movement of the chain drives the two movable plates to move in opposite directions, and a pushing unit is arranged on the movable plate for driving one of the movable plates to move.

[0024] By adopting the above technical solution, the operator drives the corresponding moving plate to move through the pushing unit, and under the transmission action of the chain, the two mounting plates move in opposite directions, thereby performing surface defect detection on steel plates of different widths within a certain range.

[0025] Optionally, the pushing unit includes a third stud rotatably connected to the mounting plate, and the third stud is threadedly connected to the connecting plate corresponding to the movable plate.

[0026] By adopting the above technical solution, the operator rotates the third stud to drive the corresponding connecting plate to move, thereby driving the two movable plates to move in opposite directions, so that the two probes move in opposite directions to adapt to steel plates of different widths.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The steel plate is supported by the support wheel so that the probe and the steel plate are kept at a preset distance, and a push spring is set to apply thrust to the corresponding mounting plate so that the support wheel on the steel plate is pressed against the steel plate, thereby adapting to the change in thickness of the steel plate, which is beneficial to improving the accuracy of surface defect detection of the steel plate;

[0029] 2. The position of the mounting frame in the frame is adjusted by rotating each second stud, and then the width direction position of the probe on the steel plate is adjusted, so as to perform surface defect detection on different positions of the width direction of the steel plate, so as to perform surface defect detection on steel plates of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is a schematic diagram of the overall structure of Example 1 of the present application.

[0031] Figure 2 It is a structural schematic diagram of the detection device used to embody Example 1 of the present application.

[0032] Figure 3 It is a structural schematic diagram of the guide device used in Example 1 of the present application.

[0033] Figure 4 It is a schematic diagram of the structure of the guide wheel used to illustrate embodiment 1 of the present application.

[0034] Figure 5 yes Figure 4 Enlarged schematic diagram of part A.

[0035] Figure 6 It is a schematic diagram of the structure of the probe used in Example 1 of the present application.

[0036] Figure 7 yes Figure 6 Enlarged schematic diagram of part A.

[0037] Figure 8 It is a cross-sectional view of the fixing unit used to illustrate the first embodiment of the present application.

[0038] Fig. 9 It is a structural schematic diagram of the detection device used in Example 2 of the present application.

[0039] Fig.10 It is a structural schematic diagram of the driving component used to reflect the embodiment 2 of the present application.

[0040] Fig.11 It is a structural schematic diagram of the movable plate used to embody Example 2 of the present application.

[0041] Explanation of reference numerals: 1. frame; 11. steel plate; 12. guide device; 13. support plate; 14. spraying device; 2. vertical guide assembly; 21. stand; 22. rotating seat; 23. second stud; 24. guide roller; 3. horizontal guide assembly; 31. adjustment seat; 32. first wheel seat; 33. second wheel seat; 34. roller; 35. first stud; 36. drive motor; 37. control motor; 38. counting sensor; 4. detection device; 41. substrate; 42. mounting frame; 43. slide groove; 44. slider; 45. second stud; 46. mounting plate; 47. probe; 48. support Wheel; 5. Control assembly; 51. Transition plate; 52. Guide sleeve; 53. Guide bolt; 54. Push spring; 55. Connecting assembly; 56. Guide seat; 57. Guide groove; 6. Fixing unit; 61. Sleeve; 62. Limiting ring; 63. Pin; 64. Insert rod; 65. Through hole; 66. Slot; 67. Return spring; 68. End plate; 681. Bump; 682. Accommodating groove; 7. Base; 71. Moving seat; 72. Guide wheel; 73. First stud; 8. Moving plate; 81. Driving assembly; 82. Sprocket; 83. Chain; 84. Connecting plate; 85. Push unit; 86. Third stud. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-11 This application is described in further detail.

[0043] Example 1

[0044] The present application embodiment discloses a steel plate surface detection device. Figure 1 and Figure 2 The steel plate surface detection equipment comprises a rectangular parallelepiped frame 1 arranged on the ground, on which a steel plate 11 to be detected is horizontally arranged, and the steel plate 11 to be detected moves along the length direction of the frame 1. Both ends of the frame 1 along its length direction are provided with guide devices 12 for guiding the steel plate 11, and a detection device 4 for performing surface defect detection on the steel plate 11 is arranged in the frame 1, and a spraying device 14 for marking the defective position detected on the surface of the steel plate 11 is arranged at the discharging end of the frame 1.

[0045] like Figure 2 and Figure 3 The guide device 12 includes a support plate 13 fixedly connected to the frame 1, and a vertical guide assembly 2 for vertically guiding the steel plate 11 and a horizontal guide assembly 3 for horizontally guiding the steel plate 11 are fixedly connected to the support plate 13. Two horizontal guide assemblies 3 are arranged on the support plate 13, and the vertical guide assembly 2 is located between the two horizontal guide assemblies 3.

[0046] The horizontal guide assembly 3 includes an adjustment seat 31 disposed on the support plate 13, and a first wheel seat 32 and a second wheel seat 33 are horizontally slidably disposed on the adjustment seat 31, and the sliding direction of the first wheel seat 32 and the second wheel seat 33 on the adjustment seat 31 is parallel to the width direction of the frame 1. The first wheel seat 32 and the second wheel seat 33 are both rotatably connected to rollers 34 for horizontally guiding the steel plate 11, and the axial direction of each roller 34 is parallel to the height direction of the frame 1. The adjustment seat 31 is rotatably connected to a first stud 35, and the axial direction of the first stud 35 is parallel to the width direction of the frame 1, and the first stud 35 is threadedly connected to the first wheel seat 32 and the second wheel seat 33. The threaded sections of the first wheel seat 32 and the second wheel seat 33 corresponding to the first stud 35 have opposite rotation directions, so that when the first stud 35 rotates, it drives the first wheel seat 32 and the second wheel seat 33 to move in opposite directions. The adjustment seat 31 is fixedly connected to a driving motor 36 for driving the first stud 35 to rotate.

[0047] A control motor 37 is fixedly connected to the first wheel seat 32 of one of the horizontal guide assemblies 3. The control motor 37 is used to drive the corresponding roller 34 to rotate. A counting sensor 38 for calculating the number of rotations of the corresponding roller 34 is provided on the second wheel seat 33 opposite to the control motor 37.

[0048] The vertical guide assembly 2 includes two upright seats 21 fixedly connected to the support plate 13. Two rotating seats 22 are slidably arranged on the two upright seats 21 in the vertical direction. The two upright seats 21 are rotatably connected with second studs 23. The axis directions of the two second studs 23 are parallel to the height direction of the frame 1. The top ends of the two second studs 23 are fixedly connected with hand wheels for facilitating the operator to control the rotation of the second studs 23. The second studs 23 are threadedly connected with the corresponding two rotating seats 22, and the thread sections of the two rotating seats 22 corresponding to the second studs 23 on the same upright seat 21 are opposite in rotation direction, so that the rotation of the second studs 23 drives the corresponding two rotating seats 22 to move in the opposite direction. The rotating seats 22 on the two upright seats 21 correspond to each other one by one, and a guide roller 24 is rotatably connected between the two corresponding rotating seats 22. The axis directions of the two guide rollers 24 are parallel to the width direction of the frame 1, and the steel plate 11 is inserted between the two guide rollers 24.

[0049] like Figure 4 and Figure 5, two detection devices 4 are arranged in the frame 1, and the two detection devices 4 are arranged at intervals in the frame 1 along the width direction of the frame 1. The detection device 4 includes two base plates 41 horizontally fixedly connected to the frame 1, the steel plate 11 is located between the two base plates 41, and the two base plates 41 are provided with mounting frames 42 on the side facing the steel plate 11. The two base plates 41 are provided with slide grooves 43 on the opposite sides, and the two mounting frames 42 are fixedly connected with sliders 44 on the side facing the corresponding base plates 41, and the two sliders 44 are slidably arranged in the corresponding slide grooves 43 along the width direction of the frame 1, so that the two mounting frames 42 are slidably arranged on the corresponding base plates 41 along the width direction of the frame 1. The second studs 45 are rotatably connected to the opposite surfaces of the two base plates 41, and the axial direction of each second stud 45 is parallel to the width direction of the frame 1. The two second studs 45 both penetrate the corresponding slider 44, and the two second studs 45 are both threadedly connected to the corresponding slider 44, and one end of the two second studs 45 is fixedly connected to a hand wheel for the operator to conveniently control the rotation of the second stud 45. The operator rotates the hand wheel to drive the corresponding second stud 45 to rotate, thereby adjusting the position of the mounting frame 42 in the frame 1.

[0050] The two mounting frames 42 of the same detection device 4 are both provided with mounting plates 46 on the opposite sides. The two mounting plates 46 of the same detection device 4 are located on the upper and lower sides of the steel plate 11. The mounting plate 46 above the steel plate 11 is now recorded as the upper mounting plate 46, and the mounting plate 46 below the steel plate 11 is recorded as the lower mounting plate 46. The upper mounting plate 46 is mounted on the corresponding mounting frame 42 through the control component 5, and the lower mounting plate 46 is directly fixedly connected to the corresponding mounting frame 42. The upper mounting plate 46 and the lower mounting plate 46 are both installed with probes 47 on the side facing the steel plate 11 through the connecting component 55. The probes 47 are used to detect surface defects of the steel plate 11. The upper mounting plate 46 and the lower mounting plate 46 are both rotatably connected to the opposite surfaces. The support wheels 48 are used to press against the surface of the steel plate 11. Under the action of the support wheels 48, the corresponding probes 47 and the steel plate 11 are kept at an appropriate distance to ensure the accuracy of the surface defect detection of the steel plate 11.

[0051] like Figure 5The control assembly 5 includes a transition plate 51 horizontally fixedly connected to the corresponding mounting frame 42 on the side facing the steel plate 11. Four guide sleeves 52 are arranged through the transition plate 51. The axial directions of the four guide sleeves 52 are parallel to the height direction of the frame 1. The four guide sleeves 52 are arranged in a matrix, and a guide bolt 53 is slidably penetrated in each guide sleeve 52 along the vertical direction. The screw head of each guide bolt 53 abuts against the upper end of the corresponding guide sleeve 52 to prevent the guide bolt 53 from passing downward through the corresponding guide sleeve 52. The threaded section of each guide bolt 53 is threadedly connected to the upper mounting plate 46. Each guide bolt 53 is sleeved with a push spring 54, which is always in a compressed state, and the upper end of each push spring 54 abuts against the transition plate 51, and the lower end of each push spring 54 abuts against the upper mounting plate 46. Each push spring 54 pushes the lower mounting plate 46 downward, and makes the supporting wheel 48 corresponding to the lower mounting plate 46 press against the steel plate 11 .

[0052] like Figure 5 and Figure 6 The connecting assembly 55 includes two long strip guide seats 56 horizontally fixedly connected to the mounting plate 46 on the side facing the steel plate 11. The length direction of the two guide seats 56 is parallel to the width direction of the frame 1, and the cross-sections of the two guide seats 56 perpendicular to the length direction are L-shaped. The two guide seats 56 are arranged opposite to each other and form a T-shaped groove with the corresponding mounting plate 46. A set of opposite surfaces of the probe 47 are provided with guide grooves 57 for the guide seats 56 to be plugged in, so that the probe 47 can be slidably arranged in the T-shaped groove along the width direction of the frame 1.

[0053] like Figure 6 , Figure 7 as well as Figure 8 , a fixing unit 6 for fixing the probe 47 is provided on one of the guide seats 56, and the fixing unit 6 includes a cylindrical sleeve 61 fixed on the corresponding guide seat 56, and the axial direction of the sleeve 61 is parallel to the length direction of the frame 1. A limit ring 62 is coaxially fixedly connected in the sleeve 61, and a cylindrical pin 63 is slidably penetrated in the limit ring 62 along the axial direction of the sleeve 61. A cylindrical plug rod 64 is fixedly connected to one end of the pin 63 facing the corresponding guide seat 56, and the diameter of the plug rod 64 is larger than the inner diameter of the limit ring 62 and smaller than the inner diameter of the sleeve 61. A through hole 65 for the plug rod 64 to pass through is provided on the guide seat 56 corresponding to the sleeve 61, and a slot 66 for the plug rod 64 to be inserted is provided on the probe 47.

[0054] A return spring 67 is sleeved between the stop ring 62 and the insertion rod 64 on the pin shaft 63, and the return spring 67 is used to push the insertion rod 64 to pass through the through hole 65 and insert into the slot 66. An end of the pin shaft 63 away from the corresponding guide seat 56 is fixedly connected to an end plate 68, and the end plate 68 is used to abut against an end of the sleeve 61 away from the corresponding guide seat 56. Two protrusions 681 are fixedly connected to the end of the end plate 68 facing the sleeve 61, and the pin shaft 63 is located between the two protrusions 681. Two receiving grooves 682 for the protrusions 681 to be inserted are provided at one end of the sleeve 61 facing the end plate 68. When the two protrusions 681 are both inserted into the corresponding receiving grooves 682, the insertion rod 64 passes through the through hole 65 under the elastic force of the return spring 67 and is inserted into the slot 66. When the two protrusions 681 are separated from the corresponding receiving grooves 682 and abut against one end of the sleeve 61 close to the end plate 68 , the insertion rod 64 is retracted into the sleeve 61 .

[0055] like Figure 4 , each mounting frame 42 is fixedly connected with a base 7 on both sides along the length direction of the frame 1, and each base 7 is provided with a movable seat 71 which is slidably arranged in the vertical direction, and each movable seat 71 is rotatably connected with two guide wheels 72, and the axial direction of each guide wheel 72 is parallel to the width direction of the frame 1, and the two guide wheels 72 on the same movable seat 71 are arranged at intervals along the width direction of the frame 1. Each base 7 is rotatably connected with a first stud 73, and the axial direction of each first stud 73 is parallel to the height direction of the frame 1. Each first stud 73 penetrates the corresponding movable seat 71 and is threadedly connected with the corresponding movable seat 71, and the end of each first stud 73 is fixedly connected with a hand wheel for facilitating the operator to rotate the first stud 73. The guide wheels 72 on the two corresponding mounting frames 42 correspond to each other one by one, and a gap is left between the two corresponding guide wheels 72 for the steel plate 11 to pass through. Providing the guide wheels 72 to support and guide the steel plate 11 is beneficial to improving the stability of the steel plate 11 during transportation in the frame 1 .

[0056] The implementation principle of Example 1 of the present application is as follows: before performing surface defect inspection on the steel plate 11, the operator first controls each driving motor 36 to drive the corresponding first wheel seat 32 and the second wheel seat 33 to move closer to or away from each other, so that the distance between the first wheel seat 32 and the corresponding second wheel seat 33 is just enough for the steel plate 11 to pass through. Then, the distance between the two guide rollers 24 is adjusted by turning the hand wheel corresponding to the second stud 23 to allow the steel plate 11 to pass through. Finally, the operator adjusts the hand wheel corresponding to each first stud 73 so that the highest point of the guide wheel 72 located below the steel plate 11 and the highest point of the support wheel 48 corresponding to each lower mounting plate 46 are located on the same horizontal plane. A gap is left between the guide wheel 72 located above the steel plate 11 and the corresponding guide wheel 72 for the steel plate 11 to pass through, and the gap is greater than the thickness of the steel plate 11.

[0057] After the adjustment is completed, the operator sends the steel plate 11 into the guide device 12 at one end of the frame 1, and the steel plate 11 is guided by the guide device 12. The steel plate 11 entering the frame 1 enters between the corresponding two probes 47 under the guidance of the guide wheel 72 for surface detection. Under the action of the support wheel 48, each probe 47 maintains a preset distance from the surface of the steel plate 11, thereby ensuring the accuracy of the probe 47 in detecting surface defects of the steel plate 11. After passing through the two detection devices 4, the steel plate 11 passes through the guide device 12 at the other end, and the spraying device 14 at the output end of the frame 1 marks the position of the steel plate 11 where defects are detected.

[0058] Example 2

[0059] like Fig. 9 and Fig.10 The difference between the present embodiment 2 and the embodiment 1 is that the detection device 4 is provided in the frame 1, and two movable plates 8 are provided on the opposite surfaces of the upper mounting plate 46 and the lower mounting plate 46 for sliding along the width direction of the frame 1, and a probe 47 is fixedly connected to the side of each movable plate 8 facing the steel plate 11. A driving assembly 81 for controlling the sliding of the corresponding movable plate 8 is provided on the opposite back surfaces of the two mounting plates 46.

[0060] like Fig.10 and Fig.11 The driving assembly 81 includes two sprockets 82 rotatably connected to the corresponding mounting plates 46. The two sprockets 82 are located on the side of the corresponding mounting plates 46 away from the steel plate 11. A chain 83 for transmission is wound between the two sprockets 82. The two moving plates 8 are fixedly connected to a connecting plate 84, and the two connecting plates 84 are fixedly connected to the chain 83. The chain 83 is located between the two connecting plates 84, so that the movement of the chain 83 drives the two moving plates 8 to move in the opposite direction, thereby driving the two probes 47 on the same connecting plate 84 to move in the opposite direction.

[0061] A push unit 85 for driving one of the connecting plates 84 to slide is provided on one side of the connecting plate 84 away from the steel plate 11. The push unit 85 includes a third stud 86 rotatably connected to the side of the connecting plate 84 away from the steel plate 11. The axial direction of the third stud 86 is parallel to the width direction of the frame 1. The third stud 86 penetrates the corresponding connecting plate 84 and is threadedly connected to the corresponding connecting plate 84. A hand wheel for facilitating the operator to rotate the third stud 86 is fixedly connected to one end of the third stud 86.

[0062] The implementation principle of the second embodiment is as follows: the operator rotates the hand wheel corresponding to the third stud 86, thereby driving the third stud 86 to rotate, thereby driving the movable plate 8 corresponding to the third stud 86 to move on the mounting plate 46. Under the transmission action of the chain 83, the two movable plates 8 move in opposite directions, and the two probes 47 move closer to or farther from each other, so as to adapt to steel plates 11 of different widths within a certain range.

[0063] 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. A steel plate surface detection device, characterized in that: It comprises a frame (1), wherein both sides of the frame (1) are provided with guide devices (12) for guiding a steel plate (11), a detection device (4) for detecting defects on both sides of the steel plate (11) is provided inside the frame (1), and a spraying device (14) for marking defect positions of the steel plate (11) is provided at one end of the frame (1); The detection device (4) comprises two mounting plates (46), on which probes (47) for detecting surface defects of the steel plate (11) are detachably mounted via a connecting assembly (55), the steel plate (11) is located between the two probes (47), and the two mounting plates (46) are provided with support wheels (48) for supporting the steel plate (11), the support wheels (48) being used to limit the distance between the steel plate (11) and the corresponding probes (47), and the frame (1) is provided with a control assembly (5) for pushing the support wheels (48) on the two mounting plates (46) to clamp the steel plate (11); The two mounting plates (46) are both mounted in the frame (1) via a mounting frame (42); the control assembly (5) comprises a plurality of guide bolts (53) threadedly connected to one of the mounting plates (46); the mounting frame (42) corresponding to the guide bolts (53) is fixedly connected to a plurality of guide sleeves (52); the guide bolts (53) correspond to the guide sleeves (52) one by one, and each guide bolt (53) is slidably inserted into the corresponding guide sleeve (52); each guide bolt (53) is sleeved with a push spring (54); the push spring (54) is used to push the corresponding mounting plate (46) to be pressed against the steel plate (11); A plurality of the detection devices (4) are arranged in the frame (1), and a base plate (41) is fixedly connected to a position corresponding to each mounting frame (42) in the frame (1), each mounting frame (42) is slidably arranged on the corresponding base plate (41), and each base plate (41) is rotatably connected to a second stud (45), the second stud (45) passes through the corresponding mounting frame (42) and is threadedly connected to the mounting frame (42); A plurality of movable plates (8) are slidably disposed on each of the mounting plates (46); each of the movable plates (8) corresponds to a probe (47); each of the probes (47) is used to perform surface defect detection on the steel plate (11); and each of the mounting plates (46) is provided with a driving assembly (81) for controlling the movable plate (8) to move on the mounting plate (46); Two movable plates (8) are arranged on the mounting plate (46); the driving assembly (81) comprises two sprocket wheels (82) rotatably connected to the mounting plate (46); a chain (83) is arranged between the two sprocket wheels (82); and the two movable plates (8) are fixedly connected to the chain (83) via a connecting plate (84); the movement of the chain (83) drives the two movable plates (8) to move in opposite directions; and a pushing unit (85) for driving one of the movable plates (8) to move is arranged on the movable plate (8); The pushing unit (85) comprises a third stud (86) rotatably connected to the mounting plate (46), and the third stud (86) is threadedly connected to the connecting plate (84) corresponding to the moving plate (8).

2. The steel plate surface detection device according to claim 1, characterized in that: A movable seat (71) is slidably provided on both sides of each of the mounting frames (42), and each of the movable seats (71) is provided with a guide wheel (72) for guiding the steel plate (11). The guide wheels (72) on the two movable seats (71) correspond to each other one by one, and a gap is left between the two corresponding guide wheels (72) for the steel plate (11) to pass through. The mounting frame (42) is rotatably connected to a position corresponding to the movable seat (71) with a first stud (73), and the first stud (73) passes through the corresponding movable seat (71) and is threadedly connected to the movable seat (71).

3. The steel plate surface detection device according to claim 1, characterized in that: The connecting assembly (55) comprises two guide seats (56) fixedly connected to the mounting plate (46), the probe (47) is located between the two guide seats (56), and the probe (47) is provided with a guide groove (57) for the two guide seats (56) to slide, and the mounting plate (46) is provided with a fixing unit (6) for fixing the probe (47).

4. The steel plate surface detection device according to claim 3, characterized in that: The fixing unit (6) comprises a sleeve (61) fixedly connected to one of the guide seats (56), a limit ring (62) fixedly connected inside the sleeve (61), a pin shaft (63) slidably penetrating inside the limit ring (62), an insertion rod (64) fixedly connected to one end of the pin shaft (63), a through hole (65) for the insertion rod (64) to pass through is provided on the guide seat (56) corresponding to the insertion rod (64), and a useful A slot (66) is provided for the insertion rod (64) to be inserted into, a return spring (67) is sleeved on the pin shaft (63) between the insertion rod (64) and the limiting ring (62), the return spring (67) is used to push the insertion rod (64) to be inserted into the slot (66), a protrusion (681) is fixedly connected to one end of the pin shaft (63) away from the insertion rod (64), and a receiving groove (682) for the protrusion (681) to be inserted into is provided on the sleeve (61).

Images