Stainless steel bar eddy current flaw detection device

Abstract

The utility model relates to the technical field of stainless steel bar flaw detection, and discloses a stainless steel bar eddy current flaw detection device which comprises a base, an eddy current flaw detector is arranged at the top end of the base, a supporting plate is fixedly installed at the top end of the base, a first adjusting structure is arranged on the supporting plate, a second adjusting structure is arranged at the top end of the base, and the eddy current flaw detector is arranged on the second adjusting structure. A flaw detection head is arranged on the second adjusting structure, the flaw detection head is connected with an eddy current flaw detector through an electric wire, a movable hole is formed in the inner side of the supporting plate, an inner cavity of the movable hole is movably connected with the first adjusting structure, and the first adjusting structure comprises a stepping motor; the stepping motor is fixedly connected with the outer surface of the supporting plate, an output shaft of the stepping motor is movably connected with an inner cavity of the movable hole, and a threaded rod is fixedly installed on the output shaft of the stepping motor. The device does not need to manually hold the stainless steel rod for detection, is simple to operate, and is suitable for workers with different technical bases.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel bar flaw detection, in particular to an eddy current flaw detection device for stainless steel bars. Background Art

[0002] Stainless steel rod is a long strip of metal material made of stainless steel. It has the characteristics of corrosion resistance, high heat resistance, high strength, good mechanical properties and high temperature stability. The eddy current flaw detector is a device based on the eddy current detection principle to detect whether there are cracks, pores and other defects in steel bars and plates. It has the function of suppressing interference signals and picking up useful information. It is mainly used for non-destructive flaw detection of metal materials.

[0003] At present, the eddy current flaw detector is composed of an oscillator, a probe coil, a signal detection device, a measurement and comparison circuit, a signal processing alarm display and a power supply. However, the existing eddy current flaw detector has a complex structure and is difficult to operate. Therefore, we propose a stainless steel rod eddy current flaw detector. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the existing technology, the utility model provides a stainless steel rod eddy current flaw detection device, which has the advantages of not requiring manual holding of the stainless steel rod for detection, simple operation and being suitable for workers with different technical backgrounds. It solves the problem that the existing eddy current flaw detection device has a relatively complex structure and is difficult to operate.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of detecting stainless steel bars without manual hand-held operation and being simple to operate and suitable for workers with different technical bases, the utility model provides the following technical solutions: a stainless steel bar eddy current flaw detection device, comprising a base, an eddy current flaw detector is arranged on the top of the base, a support plate is fixedly installed on the top of the base, a first adjustment structure is arranged on the support plate, a second adjustment structure is arranged on the top of the base, a flaw detection head is arranged on the second adjustment structure, and the flaw detection head is connected to the eddy current flaw detector through an electric wire, so as to facilitate the detection of stainless steel bars without manual hand-held operation and be simple to operate and suitable for workers with different technical bases.

[0008] As a preferred technical solution of the utility model, a movable hole is opened on the inner side of the support plate, and the inner cavity of the movable hole is movably connected to the first adjustment structure to facilitate the installation of the first adjustment structure.

[0009] As a preferred technical solution of the utility model, the first adjustment structure includes a stepping motor, the stepping motor is fixedly connected to the outer surface of the support plate, and the output shaft of the stepping motor is movably connected to the inner cavity of the movable hole;

[0010] A threaded rod is fixedly mounted on the output shaft of the stepper motor, and the outer surface of the threaded rod is movably connected to the inner cavity of the movable hole. A moving block is provided on the outer surface of the threaded rod, and a limiting rod is provided inside the moving block. Both ends of the limiting rod are fixedly connected to the inner side of the support plate, and a placement seat is fixedly mounted on the top of the moving block to facilitate the adjustment of the position of the stainless steel rod, thereby facilitating flaw detection.

[0011] As a preferred technical solution of the utility model, a threaded hole is provided inside the moving block, and the inner cavity of the threaded hole is threadedly connected to the outer surface of the threaded rod, so that the moving block can move along the outer surface of the threaded rod.

[0012] As a preferred technical solution of the utility model, a limiting hole is opened inside the moving block, and the inner cavity of the limiting hole is slidably connected to the outer surface of the limiting rod, so that the moving block can move along the outer surface of the limiting rod and play a role of limiting guide.

[0013] As a preferred technical solution of the utility model, the second adjustment structure includes an electric push rod, the bottom end of the electric push rod is fixedly connected to the top end of the base, a top plate is fixedly installed on the top end of the electric push rod, a magnetic structure is provided inside the top plate, the magnetic structure is fixedly connected to the flaw detection head, and the inside of the top plate is movably connected to the flaw detection head to facilitate the adjustment of the height of the flaw detection head.

[0014] As a preferred technical solution of the utility model, a mounting groove is opened inside the top of the top plate, the inner cavity of the mounting groove is fixedly connected to the magnetic attraction structure, and the inner cavity of the mounting groove is movably connected to the outer surface of the flaw detection head to facilitate the installation of the flaw detection head.

[0015] As a preferred technical solution of the utility model, the magnetic attraction structure includes a first magnetic sleeve and a second magnetic sleeve, the first magnetic sleeve is fixedly connected to the bottom wall of the inner cavity of the mounting groove, the first magnetic sleeve and the second magnetic sleeve are magnetically connected, the first magnetic sleeve and the second magnetic sleeve are magnetic sleeves with opposite poles, the inner cavity of the second magnetic sleeve is fixedly sleeved with the outer surface of the flaw detection head, and the flaw detection head is inserted into the inner cavity of the mounting groove, the second magnetic sleeve sleeved on the outer surface of the flaw detection head is magnetically attracted to the first magnetic sleeve fixed on the bottom wall of the inner cavity of the mounting groove, and the flaw detection head is fixedly suspended in the mounting groove, so as to facilitate magnetic attraction and fixation of the flaw detection head, and the operation is simple and quick.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a stainless steel rod eddy current flaw detection device, which has the following beneficial effects:

[0018] 1. The eddy current flaw detection device for stainless steel rods places the stainless steel rod to be detected on a placement seat, and uses a second adjustment structure to adjust the flaw detection head to a height suitable for flaw detection, and then starts the stepper motor. At this time, the output shaft of the stepper motor drives the threaded rod to rotate, and the threaded rod rotates in the inner cavity of the movable hole opened on the inner side of the support plate. At the same time, the threaded rod drives the moving block to move along the outer surface of the threaded rod, and the moving block drives the placement seat and the stainless steel rod to be detected to move. At the same time, the eddy current flaw detector is started to perform flaw detection on the moving stainless steel rod until the flaw detection of the stainless steel rod to be detected is completed. During this period, the moving block moves along the outer surface of the limit rod and plays a role of limit guide, so as to facilitate the adjustment of the position of the stainless steel rod for flaw detection, and there is no need to manually hold the stainless steel rod for detection. At the same time, the operation is simple and suitable for workers with different technical bases.

[0019] 2. The stainless steel rod eddy current flaw detection device inserts the flaw detection head into the inner cavity of the installation groove. At this time, the second magnetic sleeve sleeved on the outer surface of the flaw detection head and the first magnetic sleeve fixed on the bottom wall of the inner cavity of the installation groove are magnetically attracted, and the flaw detection head is fixed and suspended in the installation groove, so that the flaw detection head can be easily assembled on the top plate, and the operation is simple and quick.

[0020] 3. The eddy current flaw detection device for stainless steel rods starts the electric push rod, which drives the top plate to move and moves away from the base. The top plate drives the flaw detection head to move until it moves to a height suitable for the flaw detection head, thereby facilitating the adjustment of the height of the flaw detection head and better flaw detection of the stainless steel rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a main stereoscopic view of the utility model;

[0022] Figure 2 It is a side perspective view of the utility model;

[0023] Figure 3 It is an exploded stereogram of the utility model.

[0024] In the figure: 1. base; 2. eddy current flaw detector; 3. support plate; 4. first adjustment structure; 41. stepper motor; 42. threaded rod; 43. moving block; 44. placement seat; 45. limit rod; 5. second adjustment structure; 51. electric push rod; 52. top plate; 521. mounting groove; 53. first magnetic sleeve; 54. second magnetic sleeve; 6. flaw detector head. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] Example 1

[0027] Reference Figure 1-3 , which is the first embodiment of the utility model, provides a stainless steel rod eddy current flaw detection device, including a base 1, an eddy current flaw detector 2 is arranged on the top of the base 1, a support plate 3 is fixedly installed on the top of the base 1, a first adjustment structure 4 is arranged on the support plate 3, a second adjustment structure 5 is arranged on the top of the base 1, a flaw detection head 6 is arranged on the second adjustment structure 5, and the flaw detection head 6 is connected to the eddy current flaw detector 2 through an electric wire.

[0028] A movable hole is opened on the inner side of the support plate 3 , and the inner cavity of the movable hole is movably connected to the first adjustment structure 4 .

[0029] The first adjustment structure 4 includes a stepper motor 41, the stepper motor 41 is fixedly connected to the outer surface of the support plate 3, and the output shaft of the stepper motor 41 is movably connected to the inner cavity of the movable hole;

[0030] A threaded rod 42 is fixedly installed on the output shaft of the stepper motor 41, and the outer surface of the threaded rod 42 is movably connected to the inner cavity of the movable hole. A moving block 43 is provided on the outer surface of the threaded rod 42, and a limiting rod 45 is provided inside the moving block 43. The two ends of the limiting rod 45 are fixedly connected to the inner side of the support plate 3, and a placement seat 44 is fixedly installed on the top of the moving block 43.

[0031] A threaded hole is formed inside the moving block 43 , and an inner cavity of the threaded hole is threadedly connected to an outer surface of the threaded rod 42 .

[0032] A limiting hole is provided inside the moving block 43 , and an inner cavity of the limiting hole is slidably connected to an outer surface of the limiting rod 45 .

[0033] During use, the stainless steel rod to be inspected is placed on the placement seat 44, and the second adjustment structure 5 is used to adjust the flaw detection head 6 to a height suitable for flaw detection, and then the stepper motor 41 fixed on the support plate 3 is started. At this time, the output shaft of the stepper motor 41 drives the threaded rod 42 fixed on the output shaft to rotate, and the threaded rod 42 rotates in the inner cavity of the movable hole opened on the inner side of the support plate 3. At the same time, the threaded rod 42 drives the moving block 43 to move along the outer surface of the threaded rod 42, and the moving block 43 drives the placement seat 44 and the stainless steel rod to be inspected to move. At the same time, the eddy current flaw detector 2 is started to perform flaw detection on the moving stainless steel rod until the flaw detection of the stainless steel rod to be inspected is completed. During this period, the moving block 43 moves along the outer surface of the limit rod 45 and plays a role of limit guide, so as to facilitate the adjustment of the position of the stainless steel rod for flaw detection, and there is no need to manually hold the stainless steel rod for detection. At the same time, the operation is simple and suitable for staff with different technical bases.

[0034] Example 2

[0035] Reference Figure 1-3 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: the second adjustment structure 5 includes an electric push rod 51, the bottom end of the electric push rod 51 is fixedly connected to the top of the base 1, a top plate 52 is fixedly installed on the top of the electric push rod 51, a magnetic structure is arranged inside the top plate 52, the magnetic structure is fixedly connected to the flaw detection head 6, and the inside of the top plate 52 is movably connected to the flaw detection head 6.

[0036] A mounting groove 521 is provided inside the top of the top plate 52 , the inner cavity of the mounting groove 521 is fixedly connected to the magnetic attraction structure, and the inner cavity of the mounting groove 521 is movably connected to the outer surface of the flaw detection head 6 .

[0037] The magnetic attraction structure includes a first magnetic sleeve 53 and a second magnetic sleeve 54. The first magnetic sleeve 53 is fixedly connected to the bottom wall of the inner cavity of the mounting groove 521. The first magnetic sleeve 53 and the second magnetic sleeve 54 are magnetically connected. The first magnetic sleeve 53 and the second magnetic sleeve 54 are magnetic sleeves with opposite poles. The inner cavity of the second magnetic sleeve 54 is fixedly sleeved to the outer surface of the flaw detection head 6.

[0038] During use, the flaw detection head 6 is inserted into the inner cavity of the installation groove 521, and the second magnetic sleeve 54 sleeved on the outer surface of the flaw detection head 6 and the first magnetic sleeve 53 fixed on the bottom wall of the inner cavity of the installation groove 521 are magnetically attracted, and the flaw detection head 6 is fixed and suspended in the installation groove 521, so that the flaw detection head 6 is conveniently assembled on the top plate 52, and the operation is simple and quick;

[0039] Then, by starting the electric push rod 51 fixed on the base 1, the electric push rod 51 drives the top plate 52 fixed on the electric push rod 51 to move and move away from the base 1. The top plate 52 drives the flaw detection head 6 to move until it moves to a height suitable for the flaw detection of the flaw detection head 6, thereby facilitating the adjustment of the height of the flaw detection head 6 and better flaw detection of the stainless steel rod.

[0040] The remaining structures are the same as those of Example 1.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A stainless steel rod eddy current flaw detection device, comprising a base (1), characterized in that: An eddy current flaw detector (2) is arranged at the top of the base (1), a support plate (3) is fixedly mounted at the top of the base (1), a first adjustment structure (4) is arranged on the support plate (3), a second adjustment structure (5) is arranged at the top of the base (1), a flaw detection head (6) is arranged on the second adjustment structure (5), and the flaw detection head (6) is connected to the eddy current flaw detector (2) via an electric wire; A movable hole is provided on the inner side of the support plate (3), and the inner cavity of the movable hole is movably connected to the first adjustment structure (4); The first adjustment structure (4) comprises a stepping motor (41), the stepping motor (41) is fixedly connected to the outer surface of the support plate (3), and the output shaft of the stepping motor (41) is movably connected to the inner cavity of the movable hole; A threaded rod (42) is fixedly mounted on the output shaft of the stepping motor (41), the outer surface of the threaded rod (42) is movably connected to the inner cavity of the movable hole, a moving block (43) is arranged on the outer surface of the threaded rod (42), a limiting rod (45) is arranged inside the moving block (43), both ends of the limiting rod (45) are fixedly connected to the inner side of the support plate (3), and a placement seat (44) is fixedly mounted on the top of the moving block (43); The second adjustment structure (5) comprises an electric push rod (51), the bottom end of the electric push rod (51) is fixedly connected to the top end of the base (1), a top plate (52) is fixedly installed on the top end of the electric push rod (51), a magnetic structure is arranged inside the top plate (52), the magnetic structure is fixedly connected to the flaw detection head (6), and the inside of the top plate (52) is movably connected to the flaw detection head (6).

2. The eddy current flaw detection device for stainless steel rods according to claim 1, characterized in that: A threaded hole is provided inside the moving block (43), and the inner cavity of the threaded hole is threadedly connected to the outer surface of the threaded rod (42).

3. The eddy current flaw detection device for stainless steel rods according to claim 2, characterized in that: A limiting hole is provided inside the moving block (43), and an inner cavity of the limiting hole is slidably connected to an outer surface of the limiting rod (45).

4. The eddy current flaw detection device for stainless steel rods according to claim 1, characterized in that: A mounting groove (521) is provided inside the top end of the top plate (52); the inner cavity of the mounting groove (521) is fixedly connected to the magnetic attraction structure; and the inner cavity of the mounting groove (521) is movably plugged into the outer surface of the flaw detection head (6).

5. The eddy current flaw detection device for stainless steel rods according to claim 4, characterized in that: The magnetic attraction structure comprises a first magnetic sleeve (53) and a second magnetic sleeve (54); the first magnetic sleeve (53) is fixedly connected to the bottom wall of the inner cavity of the mounting groove (521); the first magnetic sleeve (53) and the second magnetic sleeve (54) are magnetically connected; the first magnetic sleeve (53) and the second magnetic sleeve (54) are magnetic sleeves with opposite magnetic poles; and the inner cavity of the second magnetic sleeve (54) is fixedly sleeved to the outer surface of the flaw detection head (6).

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