Traction device of magnetic flux leakage detection system

Abstract

The utility model discloses a traction device of a magnetic flux leakage detection system, and belongs to the technical field of magnetic flux leakage detection. Comprising five groups of unit blocks, a lever handle unit, a curvature adjusting mechanical structure and a detachable encoder unit, and a magnetic flux leakage probe is arranged in each unit block; the two ends of the adjacent unit blocks are mutually hinged through pin shafts; walking wheels are rotationally installed at the two ends of each unit block. The lever handle unit comprises a handle seat fixed at the front end of the middle unit block, a holding handle is fixed at the top of the handle seat, a notch is formed in the handle seat, a lever handle penetrates through and is hinged to the interior of the notch, and a walking guide wheel is rotationally mounted at the front end of the lever handle; according to the traction device of the magnetic flux leakage detection system, the curvature of the traction device can be adjusted according to the outer diameter of a pipeline, calibration is carried out through the gauge, the adjustment precision is high, and the traction device can be tightly attached to the pipeline after being installed on the outer wall of the pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to a magnetic flux leakage detection system traction device belongs to magnetic flux leakage detection technical field. BACKGROUND

[0002] The current pipeline external detector product mainly has the Pipescan of Eddyfi Technologies company, and the product uses fixed permanent magnet magnetization structure, needs the detector to be placed to the pipeline outer surface during detection, needs to remove when ending detection, and the strong magnetic material of magnetic flux leakage equipment is needed to magnetize the pipeline in order to detect, the influence of the strong magnetic force generated, the existing detection traction system is fixed curvature, cannot adjust, and the actual detection pipeline diameter is changeable, and the detection equipment needs to have curvature adjustment capacity, for this reason, China patent publication number: CN118914344A, discloses a kind of magnetization assembly and pipeline magnetic flux leakage external detector for pipeline, and the adjusting assembly for adjusting the interval between adjacent two pipeline magnetization assemblies is equipped, adjusting assembly is located at the position where pipeline magnetization assembly is away from the outer wall of pipeline, so that the position where adjacent magnetization assembly is close to pipeline can be relatively rotated, and then the interval between adjacent magnetization assembly away from pipeline is adjusted by adjusting assembly, to adjust the angle between adjacent two magnetization assemblies, adapt to certain pipeline diameter range, ensure that magnetization assembly can be fitted with the cylindrical surface of pipeline outer wall;But the curvature adjustment precision of this structure is not high;Device is installed to pipeline, and is strongly attracted by the magnet of magnetic flux leakage probe, and hinge part is easily damaged. UTILITY MODEL CONTENT

[0003] To solve the above problems, the utility model provides a kind of magnetic flux leakage detection system traction device, can adjust the curvature of traction device according to the outer diameter of pipeline, and adjustment precision is high.

[0004] The magnetic flux leakage detection system traction device of the utility model, including

[0005] Unit block, unit block is provided with five groups, and each unit block is internally provided with magnetic flux leakage probe;Adjacent unit block two ends are hingedly connected by pin shaft;Unit block two ends are rotatably installed with walking wheel;Unit block is as the carrier of magnetic flux leakage probe, and the permanent magnet of magnetic flux leakage probe magnetizes the workpiece to be detected, so that the magnetization in workpiece reaches magnetic saturation, when the surface and near-surface structure of workpiece are continuous, the Hall element in the middle of probe cannot detect magnetic force line, to carry out magnetic flux leakage detection;Adjacent unit block constitutes a whole by hinging;

[0006] Lever handle unit, lever handle unit includes fixed to the front end of the unit block of the middle handle seat, the handle seat top fixed with holding handle, the handle seat on the opening has notched, the notched passes through and is hinged with lever handle, the lever handle front end rotationally installed with walking guide wheel; The lever handle is attached to the top surface of the middle unit block; The lever handle is used for removing and placing the traction device, and the traction device is guided by the walking guide wheel during detection. When it is necessary to remove, the traction device can be removed by taking the walking guide wheel as the front end fulcrum;

[0007] Curvature adjustment mechanical structure, both sides of the unit block top surface and both sides of the middle unit block top surface are fixed with hinge seats, and the hinge seats are hinged with nut members; The adjustment screw is rotationally connected between the middle nut member and the side nut member, and the middle part of the adjustment screw is provided with a positioning nut; The positioning nut is fixed to the outside of the unit block adjacent to the side unit block by the pressure seat;

[0008] When the outer diameter of the workpiece is measured, the curvature of the traction device can be obtained synchronously, so that the corresponding standard gauge is selected, the standard gauge is clamped on the adjustment screw, and is arranged between the side unit block and the unit block adjacent to the side; Then, rotate the adjustment screw, so that the side unit block and the unit block adjacent to the side contact the gauge, and the adjustment of one side of the traction device is completed, and then the operation is repeated on the other side of the traction device;

[0009] The detachable encoder unit is installed on the outside of one side unit block; The detachable encoder unit can be assembled to the side unit block as needed, and can monitor the travel distance and travel speed of the traction device.

[0010] Further, the detachable encoder unit includes a fixed support, the fixed support is fixed to the outside of the side unit block by bolts; The front end of the fixed support is hinged with a connecting arm, the front end of the connecting arm is rotationally provided with a contact wheel, and the inside of the connecting arm is provided with an encoder mounted with the contact wheel; The fixed support serves as a support unit, the connecting arm serves as a transition arm of the contact wheel and the fixed support, so that the contact wheel can be pressed to the outer wall of the workpiece.

[0011] Further, the nut member and the positioning nut are copper parts, and the outer wall of the positioning nut is provided with a clamping groove matched with the pressure seat.

[0012] Further, the outside of the side unit block is fixed with a control host, and the detachable encoder unit is fixed to the bottom surface of the control host.

[0013] Further, the adjustment screw of the side unit block includes a large thread segment rotationally connected with the nut member and the positioning nut of the side unit block; and a small thread segment rotationally connected with the nut member of the middle part.

[0014] Compared with the prior art, the magnetic flux leakage detection system traction device can adjust the curvature of the traction device according to the outer diameter of the pipeline, and is calibrated through a gauge, so that the adjustment precision is high, after the traction device is installed to the outer wall of the pipeline, the traction device can be closely combined with the pipeline, deviation of the curvature is avoided, damage to the hinged part in the traction process is caused, or the measurement precision is affected. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the magnetic flux leakage detection system traction device.

[0016] Figure 2 It is a detachable encoder unit structure schematic view of the utility model.

[0017] The drawings show that: 1, unit block, 2, pin shaft, 3, walking wheel, 4, handle seat, 5, holding handle, 6, lever handle, 7, walking guide wheel, 8, nut part, 9, adjusting screw, 10, positioning screw sleeve, 11, pressing seat, 12, detachable encoder unit, 13, fixed support, 14, connecting arm, 15, contact wheel. DETAILED DESCRIPTION

[0018] Example 1:

[0019] As shown in the magnetic flux leakage detection system traction device shown in Figure 1 and Figure 2 , comprising

[0020] unit block 1, unit block 1 is provided with five groups, each unit block 1 is internally provided with a magnetic flux leakage probe, adjacent unit block 1 is hinged to each other through a pin shaft 2, unit block 1 is rotatably installed with a walking wheel 3 at both ends, unit block 1 serves as a carrier of the magnetic flux leakage probe, the permanent magnet of the magnetic flux leakage probe magnetizes the detected workpiece, so that the magnetization inside the workpiece reaches magnetic saturation, when the surface and near-surface structure of the workpiece is continuous, the Hall element located in the middle of the probe cannot detect the magnetic force line, so as to carry out magnetic flux leakage detection, adjacent unit blocks 1 are hinged to form a whole;

[0021] lever handle unit, the lever handle unit comprises a handle seat 4 fixed to the front end of the unit block 1 in the middle, the handle seat 4 is fixed with a holding handle 5 at the top, a notch is formed in the handle seat 4, a lever handle 6 is penetrated and hinged in the notch, and a walking guide wheel 7 is rotatably installed at the front end of the lever handle 6, the lever handle 6 is combined with the top surface of the unit block 1 in the middle, the lever handle 6 is used for taking down and placing the traction device, and the traction device is guided to walk through the walking guide wheel 7 during detection, when it is needed to be taken down, the traction device can be taken down by taking the walking guide wheel 7 as a front end fulcrum;

[0022] The curvature adjusting mechanism is characterized in that the top surface of the unit block 1 at the side and the top surface of the unit block 1 at the middle are fixed with hinge seats, and the hinge seats are hinged with nut members 8; the nut members 8 at the middle and the nut members 8 at the side are screwed with adjusting screws 9, and the adjusting screws 9 are provided with positioning nuts 10 at the middle; and the positioning nuts 10 are fixed on the outside of the unit block 1 adjacent to the unit block 1 at the side through pressing seats 11.

[0023] When the outer diameter of the workpiece is determined, the curvature of the traction device can be obtained synchronously, so that the corresponding standard gauge is selected, the standard gauge is clamped on the adjusting screw 9, and is arranged between the unit block 1 at the side and the unit block 1 adjacent to the unit block 1 at the side; then, the adjusting screw 9 is rotated, so that the unit block 1 at the side and the unit block 1 adjacent to the unit block 1 at the side are contacted to the gauge, and the adjustment of one side of the traction device is completed, and then the operation is repeated on the other side of the traction device.

[0024] The detachable encoder unit 12 is arranged on the outside of the unit block 1 at one side; the detachable encoder unit 12 can be assembled on the unit block 1 at the side as needed, and can monitor the travel distance and the travel speed of the traction device.

[0025] The detachable encoder unit 12 comprises a fixed support 13, the fixed support 13 is fixed on the outside of the unit block 1 at the side through bolts; the fixed support 13 is hinged with a connecting arm 14 at the front end, the connecting arm 14 is rotatably provided with a contact wheel 15 at the front end, and the connecting arm 14 is provided with an encoder arranged on the inside and matched with the contact wheel 15; the fixed support 13 serves as a supporting unit, and the connecting arm 14 serves as a transition arm of the contact wheel 15 and the fixed support 13, so that the contact wheel 15 can be pressed to the outer wall of the workpiece.

[0026] The nut member 8 and the positioning nut 10 are copper parts, and the positioning nut 10 is provided with a clamping groove matched with the pressing seat 11 on the outer wall.

[0027] The unit block 1 at the side is fixed with a control host, and the detachable encoder unit 12 is fixed on the bottom surface of the control host.

[0028] The adjusting screw 9 at the side comprises a large thread segment screwed with the nut member 8 at the side and the positioning nut 10, and a small thread segment screwed with the nut member 8 at the middle.

[0029] The above embodiment is only a preferred embodiment of the present application, and equivalent changes or modifications made according to the structure, features and principles of the present application are included in the present application.

Claims

1. A magnetic flux leakage detection system towing arrangement characterised in that: Comprising Unit block, the unit block is provided with five groups, each of which is provided with a magnetic flux leakage probe inside; adjacent unit block both ends are hinged by pin shaft; the walking wheel is rotatably installed on both ends of the unit block; Lever handle unit, the lever handle unit includes a handle seat fixed to the front end of the unit block, the top of the handle seat is fixed with a holding handle, a slot is formed in the handle seat, a lever handle is penetrated and hinged in the slot, and a walking guide wheel is rotatably installed on the front end of the lever handle; the lever handle is attached to the top surface of the unit block in the middle; Curvature adjustment mechanism, the top surface of the unit block on both sides and the top surface of the unit block in the middle are fixed with hinge seats, and the hinge seats are hinged with nut members; the nut members in the middle and the nut members on both sides are screwed with an adjustment screw, and the adjustment screw is provided with a positioning nut in the middle; the positioning nut is fixed to the outside of the unit block adjacent to the unit block on both sides by a pressing seat; The detachable encoder unit is installed outside one of the unit blocks on both sides.

2. The magnetic flux leakage detection system towing apparatus of claim 1, wherein: The detachable encoder unit includes a fixed support, which is fixed to the outside of the unit block on both sides by bolts; the front end of the fixed support is hinged with a connecting arm, the front end of the connecting arm is rotatably provided with a contact wheel, and the inside of the connecting arm is provided with an encoder installed with the contact wheel.

3. The magnetic flux leakage detection system towing apparatus of claim 1, wherein: The nut member and the positioning nut are copper parts, and the outer wall of the positioning nut is provided with a clamping groove matched with the pressing seat.

4. The magnetic flux leakage detection system towing apparatus of claim 1, wherein: The outside of the unit block on both sides is fixed with a control host, and the detachable encoder unit is fixed to the bottom surface of the control host.

5. The magnetic flux leakage detection system towing apparatus of claim 1, wherein: The adjustment screw on both sides includes a large thread segment screwed with the nut member and the positioning nut on both sides; and a small thread segment screwed with the nut member in the middle.

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