Probe fixing mechanism of magnetic defect detector

Abstract

The utility model discloses a probe fixing mechanism of a magnetic defect detector, which comprises a bottom plate, a first guide rail and a shell, two clamping strips are mounted on the surface of the bottom plate, a plurality of studs are screwed on the surfaces of the clamping strips, the first guide rail is mounted on the surface of the bottom plate, a sliding seat is slidably connected on the surface of the first guide rail, a control handle is screwed on the surface of the sliding seat, and the shell is connected with the sliding seat. Worms penetrating through the shells are rotationally connected into the shells, worm wheels meshed with the worms are rotationally connected to the inner walls of the shells, sleeves are slidably connected into the shells, connecting rods are rotationally connected between the sleeves and the worm wheels, placing bases are arranged at the ends of the sleeves, and the sliding bases can be controlled to move by rotating the control handles, so that the distance between the two shells is adjusted. The annular probe is placed on the placing seat, the worm is screwed to control the placing seat to move, so that the placing seat can clamp the annular probe, the position of the placing seat can be flexibly adjusted, the annular probes of different sizes can be rapidly clamped, the disassembly and assembly operation is reduced, and the use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic particle flaw detectors, in particular to a probe fixing mechanism of a magnetic particle flaw detector. Background Art

[0002] Traditional magnetic particle flaw detectors need to spray magnetic suspension during operation, and the probe position needs to be adjusted multiple times and the magnetic suspension needs to be sprayed multiple times, which makes the operation cumbersome. In addition, the amount of magnetic suspension sprayed is large.

[0003] In order to solve the above problems, there is a solution of a probe fixing device for a magnetic particle flaw detector (Announcement No. CN116408228A), in which a screw motor drives the screw to rotate, and the screw drives the moving block to drive the mounting tube to move, thereby realizing the lateral reciprocating movement of the annular probe to magnetize the entire workpiece.

[0004] However, considering that the inner diameter of the annular probe must correspond to the diameter of the workpiece, if the diameter of the workpiece is small, when the workpiece is inserted into the annular probe, the distance between the workpiece and the annular probe is large, and the magnetic field force it is subjected to will be weakened, affecting the detection result. Therefore, using an annular probe that matches the size of the workpiece can improve the accuracy of the detection result. The above scheme uses a connection method of a movable block and a screw rod, which has the same fixing effect as a traditional fixed magnetic particle flaw detector. If you want to use annular probes of different sizes, you need to disassemble them, which is not flexible and convenient to use. Utility Model Content

[0005] The utility model aims to provide a probe fixing mechanism for a magnetic particle flaw detector to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a probe fixing mechanism of a magnetic particle flaw detector, comprising a bottom plate, two clamping strips are installed on the surface of the bottom plate, a plurality of studs are screwed on the surface of the clamping strips, and the workpiece can be clamped by twisting the studs to make them translate, so as to facilitate fixing the workpiece inside the annular probe;

[0007] A first guide rail, the first guide rail is mounted on the surface of the bottom plate, a sliding seat is slidably connected to the surface of the first guide rail, a control handle is screwed to the surface of the sliding seat, and the movement of the sliding seat can be restricted by tightening the control handle, so that the sliding seat can be moved at will;

[0008] The outer shell is connected to the sliding seat, the inner part of the outer shell is rotatably connected with a worm that penetrates the outer shell, the inner wall of the outer shell is rotatably connected with a worm wheel that meshes with the worm, a sleeve is slidably connected in the outer shell, a connecting rod is rotatably connected between the sleeve and the worm wheel, a placement seat is provided at the end of the sleeve, and the movement of the placement seat can be controlled by twisting the worm, so that annular probes of different sizes can be fixed, and it is flexible and convenient to use.

[0009] Furthermore, two second guide rails are provided on the surface of the base plate, and the clamping strip and the first guide rail are slidably connected to the surface of the second guide rail. The surface of the clamping strip is screwed with an adjustment bolt that rests against the surface of the second guide rail. When the clamping strip slides along the second guide rail, workpieces of different lengths can be fixed. When the first guide rail slides along the second guide rail, it drives the annular probe to perform comprehensive flaw detection on the workpiece.

[0010] Furthermore, the end of the stud is rotatably connected to a chuck, and the chuck can be selected and used according to the type of workpiece, thereby ensuring that the workpiece can be fixed more stably and avoiding movement of the workpiece.

[0011] Furthermore, a plurality of universal beads are installed on the inner surface of the slide seat, and the universal beads are rollingly connected to the surface of the first guide rail, which can reduce the resistance of the slide seat movement and save effort when moving the annular probe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The sliding seat can be controlled to move by turning the control handle, and the distance between the two shells can be adjusted. The annular probe can be placed on the placement seat, and the worm can be turned to control the placement seat to move so that the placement seat can clamp the annular probe. The position of the placement seat can be flexibly adjusted, and annular probes of different sizes can be quickly clamped, reducing disassembly and assembly operations, making it more convenient to use.

[0014] (2) The two ends of the workpiece can be clamped by the chucks on the two studs, so that the workpiece passes through the annular probe. The chuck can be rotated. When the magnetic suspension is sprayed, the workpiece can be rotated for spraying. The magnetic suspension is evenly distributed on the surface of the workpiece. The first guide rail drives the annular probe to move along the workpiece to realize the flaw detection of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the connection between the annular probe and the placement seat of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the connection between the first guide rail and the slide seat of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure inside the shell of the utility model.

[0019] In the figure: 1, base plate; 2, second guide rail; 3, clamping strip; 4, adjusting bolt; 5, stud; 6, chuck; 7, first guide rail; 8, slide seat; 9, annular probe; 10, housing; 11, placement seat; 12, control handle; 13, worm; 14, universal ball; 15, worm wheel; 16, connecting rod; 17, sleeve; 18, stop block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example:

[0022] See also Figure 1-4 The utility model provides a technical solution: a probe fixing mechanism of a magnetic particle flaw detector, comprising a bottom plate 1, two clamping strips 3 are installed on the surface of the bottom plate 1, a plurality of studs 5 are screwed on the surface of the clamping strips 3, and a crank is provided at the end of the stud 5, so that you can rotate the stud 5, and the bottom plate 1 supports the entire probe fixing mechanism and can be moved as a whole, so that the probe fixing mechanism is convenient to install;

[0023] A first guide rail 7, wherein the first guide rail 7 is mounted on the surface of the bottom plate 1, a slide seat 8 is slidably connected to the surface of the first guide rail 7, and a control handle 12 is screwed to the surface of the slide seat 8. When the control handle 12 is tightened, it can press against the first guide rail 7 to limit the movement of the slide seat 8;

[0024] The outer shell 10 is connected to the sliding seat 8. A worm 13 penetrating the outer shell 10 is rotatably connected inside the outer shell 10. A worm wheel 15 meshing with the worm 13 is rotatably connected to the inner wall of the outer shell 10. A sleeve 17 is slidably connected in the outer shell 10. A connecting rod 16 is rotatably connected between the sleeve 17 and the worm wheel 15. A placement seat 11 is provided at the end of the sleeve 17. The worm 13 and the worm wheel 15 have a self-locking feature to ensure that the placement seat 11 will not translate freely, and the placement seat 11 can only be controlled to move by twisting the worm 13.

[0025] In this embodiment, if Figure 1 As shown, two second guide rails 2 are provided on the surface of the base plate 1, the clamping strip 3 and the first guide rail 7 are slidably connected to the surface of the second guide rail 2, and the surface of the clamping strip 3 is screwed with an adjusting bolt 4 that is against the surface of the second guide rail 2. When the left and right clamping strips 3 move along the second guide rail 2, the movement of the left and right studs 5 can be controlled, and the workpiece can be flexibly fixed. The first guide rail 7 slides along the second guide rail 2 to drive the annular probe 9 to move.

[0026] In this embodiment, if Figure 1 As shown, the end of the stud 5 is rotatably connected to a chuck 6, and multiple groups of chucks 6 are provided. The shapes of the chucks 6 are conical, disc-shaped, and 90-degree folded plate, which can stably clamp different workpieces.

[0027] In this embodiment, if Figure 3 As shown, a plurality of universal beads 14 are installed on the inner surface of the slide 8, and the universal beads 14 are rollingly connected to the surface of the first guide rail 7. The surface of the first guide rail 7 has an arc groove that can clamp the universal beads 14 to ensure a smooth sliding connection between the slide 8 and the first guide rail 7.

[0028] In this embodiment, if Figure 2 As shown, the placement seat 11 is L-shaped, and an annular probe 9 is arranged on the surface of the placement seat 11. The L-shaped placement seat 11 facilitates placing the annular probe 9 directly on the placement seat 11, and then controlling the placement seat 11 to move to clamp the annular probe 9.

[0029] In this embodiment, if Figure 4 As shown, a stopper 18 is provided on the inner wall of the housing 10 , and the stopper 18 is located on the left side of the sleeve 17 , so as to limit the sleeve 17 and ensure that the sleeve 17 does not contact the worm gear 15 .

[0030] Specifically, when in use, the control handle 12 is rotated to separate it from the first guide rail 7, and then the slide 8 is moved to adjust the distance between the two slides 8, and the annular probe 9 is placed on the two placement seats 11. When the worm 13 is turned, the worm 13 drives the worm wheel 15 to rotate, and the worm wheel 15 drives the connecting rod 16 to move, and the connecting rod 16 pushes the sleeve 17 to translate, and the sleeve 17 drives the placement seat 11 to move, so that the placement seat 11 clamps the annular probe 9. When replacing the annular probe 9, the worm 13 is turned in the opposite direction to control the two placement seats 11 to release the annular probe 9;

[0031] By turning the adjusting bolt 4, the clamping strip 3 can be controlled to slide along the second guide rail 2, so that the spacing between the studs 5 on the left and right sides corresponds to the length of the workpiece, and then the workpiece is passed through the annular probe 9, and the workpiece is placed between the left and right chucks 6, and then the stud 5 is rotated, and the stud 5 drives the chuck 6 to move horizontally to clamp the workpiece stably, and then the magnetic suspension is sprayed on the workpiece, and the chuck 6 is rotatably connected to the stud 5, and the magnetic suspension can be sprayed while the workpiece is rotated;

[0032] When the annular probe 9 is powered on, it generates magnetic force and a magnetic field. The magnetic field acts on the workpiece and the magnetic suspension. If there are defects on the surface of the workpiece, leakage magnetic flux will be generated due to the increase in magnetic resistance at the defect, forming a local magnetic field. The magnetic powder will show the shape and position of the defect here, thereby judging the existence of the defect.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A probe fixing mechanism for a magnetic particle flaw detector, characterized in that: include: A bottom plate (1), two clamping strips (3) are installed on the surface of the bottom plate (1), and a plurality of studs (5) are screwed on the surface of the clamping strip (3); A first guide rail (7), the first guide rail (7) being mounted on the surface of the base plate (1), a sliding seat (8) being slidably connected to the surface of the first guide rail (7), and a control handle (12) being screwed to the surface of the sliding seat (8); A housing (10) is connected to a sliding seat (8), a worm (13) penetrating the housing (10) is rotatably connected inside the housing (10), a worm wheel (15) meshing with the worm (13) is rotatably connected to the inner wall of the housing (10), a sleeve (17) is slidably connected in the housing (10), a connecting rod (16) is rotatably connected between the sleeve (17) and the worm wheel (15), and a placement seat (11) is provided at the end of the sleeve (17).

2. The probe fixing mechanism of a magnetic particle flaw detector according to claim 1, characterized in that: The surface of the bottom plate (1) is provided with two second guide rails (2), the clamping strip (3) and the first guide rail (7) are slidably connected to the surface of the second guide rail (2), and the surface of the clamping strip (3) is screwed with an adjustment bolt (4) that abuts against the surface of the second guide rail (2).

3. The probe fixing mechanism of a magnetic particle flaw detector according to claim 1 is characterized in that: The end of the stud (5) is rotatably connected to a clamp (6).

4. The probe fixing mechanism of a magnetic particle flaw detector according to claim 1, characterized in that: A plurality of universal beads (14) are installed on the inner surface of the slide seat (8), and the universal beads (14) are rollingly connected to the surface of the first guide rail (7).

5. The probe fixing mechanism of a magnetic particle flaw detector according to claim 1, characterized in that: The placement seat (11) is arranged in an L shape, and a ring-shaped probe (9) is arranged on the surface of the placement seat (11).

6. The probe fixing mechanism of a magnetic particle flaw detector according to claim 1, characterized in that: A stopper (18) is provided on the inner wall of the outer shell (10), and the stopper (18) is located on the left side of the sleeve (17).

Images