Eddy current detection device based on efficient flaw detection of steel rail

Abstract

The utility model discloses an eddy current testing device based on steel rail efficient flaw detection, which comprises an eddy current testing instrument main body, a transmission line and an adjusting device, by arranging the adjusting device, the angle of a movable gear is adjusted along the joint of a driving gear and a rack groove by rotating a knob rod; the supporting mechanism is driven to be adjusted to be in a horizontal state through the rotating shaft, so that the stabilizing effect of auxiliary supporting of the eddy current detector main body is improved through the supporting mechanism; the supporting mechanism is arranged, when the supporting blocks are unfolded, the smooth guiding effect on the adjusting sliding blocks is increased through the sliding grooves, and the supporting rods I, the supporting rods II, the springs and the adjusting blocks are arranged in an inclined supporting mode, so that the auxiliary performance of inclined supporting between the supporting blocks and the adjusting blocks is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of rail detection equipment, in particular to an eddy current detection device for efficient rail flaw detection. Background Technique

[0002] The rail eddy current detection device is mainly used to detect defects in rails to ensure the safety of railway operation. This device uses eddy current detection technology to nondestructively evaluate certain properties of conductive materials and their workpieces or detect defects by measuring the changes in the induced eddy currents in the workpiece to be inspected. At present in China, it mainly relies on the daily inspections of track inspectors. Although some detection instruments have been developed, they either have low sensitivity or can only detect fractures but not cracks.

[0003] For example, the publication number CN201620684577.3 discloses "Rail Crack Detector". Since an eddy current sensor is used for crack detection, it not only has high sensitivity but also can detect fine cracks in the rail. Moreover, the detection device has a simple structure and is easy to use. And it adopts double-rail simultaneous detection, which greatly improves the detection efficiency. There are two detection heads arranged in front and behind each rail, which greatly reduces the missed detection rate. It is an economically applicable rail crack detector for the current railway department.

[0004] The eddy current detection process of the rail is completed by an eddy current detector. However, currently, the eddy current detector is usually only used by lying flat on a platform for work. When vibrations occur, it will lead to the uncertainty of eddy current data detection, thereby affecting the detection effect of the eddy current detector on the rail. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides an eddy current detection device for efficient rail flaw detection, and solves the above-mentioned problems.

[0007] (2) Technical Solutions

[0008] To achieve the above objectives, the present utility model is realized through the following technical solutions: An eddy current detection device for efficient rail flaw detection includes an eddy current detector main body, a transmission line, and an adjustment device. The upper end of the eddy current detector main body is connected to the transmission line. The adjustment device is installed at the rear end of the eddy current detector main body. The adjustment device includes an adjustment block, a knob rod, a driving gear, a movable gear, a rack groove, a rotating shaft, and a support mechanism. The lower side of the right end of the adjustment block is installed with a knob rod. The left end of the knob rod is fixed to the inner middle part of the driving gear. The driving gear meshes and rotates with the movable gear. The movable gear meshes and rotates with the inner side of the rack groove. The right end of the rotating shaft is fixed to the inner middle part of the movable gear. The middle part of the rotating shaft is fixed to the inner front part of the support mechanism. The adjustment block is installed at the rear end of the eddy current detector main body.

[0009] Preferably, the support mechanism includes a support block, a chute, an adjustment slider, a first support rod, a second support rod, a spring, and an adjustment block. A chute is provided inside the upper end of the support block. The adjustment slider is slidably matched with the inner side of the chute. The bottom of the first support rod is movably connected to the inner side of the upper end of the adjustment slider by a movable shaft. The upper end of the first support rod is slidably matched with the inside of the second support rod. A spring is provided inside the second support rod. The upper end of the second support rod is movably connected to the inner side of the lower end of the adjustment block by a movable shaft. The inner front part of the support block is fixed to the middle part of the rotating shaft. The adjustment block is fixed to the inner upper side of the rear end of the adjustment block.

[0010] Preferably, the driving gear, the movable gear, and the rack groove are symmetrically arranged on the left and right sides inside the adjustment block, and the angle adjustment effect of the support mechanism is improved by synchronously meshing and adjusting the angle through two groups of movable gears.

[0011] Preferably, the movable gear rotates meshingly along the connection of the driving gear and the rack groove, and the movable gear makes a circular angle adjustment along the inner side of the rack groove, and the auxiliary effect of the rotation support of the movable gear is improved by double-sided meshing.

[0012] Preferably, the rotating shaft horizontally penetrates through the inner front part of the support mechanism, and the rotating shaft and the support mechanism are distributed on the same horizontal line as the two groups of movable gears, so that the support mechanism is adjusted coaxially with the two groups of movable gears when adjusted.

[0013] Preferably, movable shafts are provided on the inner side of the upper end of the adjustment slider and the inner side of the rear end of the adjustment block, and the first support rod and the second support rod are movably connected to the adjustment slider and the adjustment block respectively through the two groups of movable shafts, and the convenience of smoothly moving the adjustment slider to the bottom of the chute when the first support rod and the second support rod contract is improved through the two groups of movable shafts.

[0014] Preferably, the first support rod, the second support rod and the spring are arranged obliquely, and the first support rod is elastically engaged with the inner side of the second support rod through the spring, and the support between the first support rod and the second support rod is improved through the spring.

[0015] (III) Beneficial effects

[0016] The utility model provides an eddy current detection device for efficient flaw detection of steel rails. It has the following beneficial effects: by setting an adjusting device, the movable gear is adjusted in angle along the connection of the driving gear and the rack groove by rotating the knob rod, and the support mechanism is adjusted to a flat state through the rotating shaft, so as to increase the stable effect of the auxiliary support for the main body of the eddy current detector through the support mechanism.

[0017] The utility model provides an eddy current detection device for efficient flaw detection of steel rails. It has the following beneficial effects: by setting a support mechanism, when the support block is unfolded, the smooth guiding effect on the adjusting slider is increased through the sliding groove, and the inclined support between the support block and the adjusting block is increased through the inclined support arrangement among the first support rod, the second support rod, the spring and the adjusting block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 is a planar structural schematic diagram of the utility model;

[0020] Figure 3 is a top view structural schematic diagram of the adjusting device of the utility model;

[0021] Figure 4 is a right view partial structural schematic diagram of the adjusting device of the utility model;

[0022] Figure 5 is a right view structural schematic diagram of the support mechanism of the utility model.

[0023] In the figure: main body of eddy current detector - 1, transmission line - 2, adjusting device - 3, adjusting block - 31, knob rod - 32, driving gear - 33, movable gear - 34, rack groove - 35, rotating shaft - 36, support mechanism - 37, support block - 371, sliding groove - 372, adjusting slider - 373, first support rod - 374, second support rod - 375, spring - 376, adjusting block - 377. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figure 1 and 2 , the present utility model provides a technical solution for an eddy current detection device for efficient flaw detection of steel rails: An eddy current detection device for efficient flaw detection of steel rails includes an eddy current detector main body 1, a transmission line 2, and an adjustment device 3. The upper end of the eddy current detector main body 1 is connected to the transmission line 2, and the adjustment device 3 is installed at the rear end of the eddy current detector main body 1.

[0026] Please refer to Figure 3 and 4 , the present utility model provides a technical solution for an eddy current detection device for efficient flaw detection of steel rails: The adjustment device 3 of the eddy current detection device for efficient flaw detection of steel rails includes an adjustment block 31, a knob rod 32, a driving gear 33, a movable gear 34, a rack groove 35, a rotating shaft 36, and a support mechanism 37. The lower side of the right end of the adjustment block 31 is installed with the knob rod 32. The left end of the knob rod 32 is fixed to the inner side of the middle part of the driving gear 33. The driving gear 33 meshes and rotates with the movable gear 34. The movable gear 34 meshes and rotates with the inner side of the rack groove 35. The right end of the rotating shaft 36 is fixed to the inner side of the middle part of the movable gear 34. The middle part of the rotating shaft 36 is fixed to the inner side of the front end of the support mechanism 37. The adjustment block 31 is installed at the rear end of the eddy current detector main body 1. The driving gear 33, the movable gear 34, and the rack groove 35 are symmetrically arranged on the left and right sides inside the adjustment block 31, and the angle adjustment effect of the support mechanism 37 is improved by synchronously meshing and adjusting the angle through two groups of movable gears 34. The movable gear 34 rotates meshingly along the connection of the driving gear 33 and the rack groove 35, and the movable gear 34 makes a circular angle adjustment along the inner side of the rack groove 35, and the auxiliary effect of the rotation support of the movable gear 34 is improved through two-way meshing. The rotating shaft 36 horizontally penetrates the inner side of the front end of the support mechanism 37, and the rotating shaft 36 and the support mechanism 37 are distributed on the same horizontal line as the two groups of movable gears 34, so that the support mechanism 37 makes a coaxial angle adjustment along with the two groups of movable gears 34 when adjusting.

[0027] Please refer to Figure 5, the present utility model provides a technical solution for an eddy current detection device for efficient flaw detection of steel rails: An eddy current detection device for efficient flaw detection of steel rails, the support mechanism 37 includes a support block 371, a chute 372, an adjustment slider 373, a first support rod 374, a second support rod 375, a spring 376 and an adjustment block 377. An inner upper end of the support block 371 is provided with the chute 372. The adjustment slider 373 is slidably engaged with the inner side of the chute 372. The inner upper end of the adjustment slider 373 is movably connected to the bottom of the first support rod 374 by a movable shaft. The upper end of the first support rod 374 is slidably engaged with the inside of the second support rod 375. The inside of the second support rod 375 is provided with the spring 376. The upper end of the second support rod 375 is movably connected to the inner lower end of the adjustment block 377 by a movable shaft. The inner front end of the support block 371 is fixed to the middle of the rotating shaft 36. The adjustment block 377 is fixed to the inner upper side of the rear end of the adjustment block 31. The inner upper end of the adjustment slider 373 and the inner rear end of the adjustment block 377 are both provided with movable shafts, and the first support rod 374 and the second support rod 375 are respectively movably connected to the adjustment slider 373 and the adjustment block 377 through two groups of movable shafts, and the convenience of smoothly moving the adjustment slider 373 to the bottom of the chute 372 for contraction when the first support rod 374 and the second support rod 375 contract is improved through the two groups of movable shafts. The first support rod 374, the second support rod 375 and the spring 376 are inclined, and the first support rod 374 is elastically engaged with the inside of the second support rod 375 through the spring 376, and the support between the first support rod 374 and the second support rod 375 is improved through the spring 376.

[0028] During use, place the eddy current detector main body 1 on the tabletop. Subsequently, rotate the knob rod 32 to make the driving gears 33 on the left and right sides inside the adjustment block 31 rotate in a fixed-point circle respectively, and make the two driving gears 33 respectively engage with the movable gears 34. And while the movable gears 34 are engaged and adjusted along the connection between the driving gears 33 and the rack groove 35, angle adjustment conversion is carried out. Then, the two movable gears 34 adjust the support mechanism 37 to a lying state through the rotating shaft 36, and place the bottom of the support block 371 in contact with the upper part of the rear-end tabletop of the eddy current detector main body 1.

[0029] Subsequently, when the support block 371 lies flat, the adjustment slider 373 inside the chute 372 gradually slides obliquely from front to back along the chute 372 and then smoothly slides to the bottom of the rear side of the chute 372, and the chute 372 increases the function of smoothly guiding the adjustment slider 373; at the same time, when the adjustment slider 373 slides and adjusts, the support rod one 374 and the support rod two 375 are tilted together through the movable shaft inside, and the upper end of the support rod two 375 takes the movable shaft inside the rear end of the adjustment block 377 as a point position. Subsequently, the adjustment slider 373, the support rod one 374, the support rod two 375, the spring 376, and the adjustment block 377 are arranged obliquely, thereby increasing the auxiliary effect of the inclined support between the support block 371 and the adjustment block 31, and indirectly improving the stable effect of the support block 371 on the auxiliary support of the eddy current detector body 1;

[0030] When the support block 371 is retracted inward, the adjustment slider 373 smoothly slides to the front end along the inside of the chute 372, and the support rod one 374 vertically contracts to the inside of the support rod two 375 and squeezes the spring 376, and the adjustment slider 373, the support rod one 374, the support rod two 375, the spring 376, and the adjustment block 377 are arranged in the same vertical line. At the same time, through the opening of the chute 372, the adjustment block 377 fits with the inner rear side of the chute 372, so as to facilitate the storage of the support block 371 to fit the inner rear end of the adjustment block 31 for storage.

[0031] The control mode of the present invention is controlled by manually starting and closing the switch. The wiring diagram of the power element and the power supply are common knowledge in the art, and the present invention is mainly used to protect mechanical devices, so the control mode and wiring layout of the present invention will not be explained in detail.

[0032] The control mode of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming of those skilled in the art, and the power supply is also common knowledge in the art. Moreover, the present invention is mainly used to protect mechanical devices, so the control mode and circuit connection of the present invention will not be explained in detail.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An eddy current detection device for efficient flaw detection of steel rails, comprising an eddy current detector main body (1) and a transmission line (2), and the transmission line (2) is connected to the upper end of the eddy current detector main body (1); It is characterized in that: It further includes an adjustment device (3), the adjustment device (3) is installed at the rear end of the eddy current detector main body (1), and the adjustment device (3) includes an adjustment block (31), a knob rod (32), a driving gear (33), a movable gear (34), a rack groove (35), a rotating shaft (36) and a support mechanism (37). The lower side of the right end of the adjustment block (31) is installed with a knob rod (32), the left end of the knob rod (32) is fixed to the inner middle part of the driving gear (33), the driving gear (33) meshes and rotates with the movable gear (34), the movable gear (34) meshes and rotates with the inner side of the rack groove (35), the right end of the rotating shaft (36) is fixed to the inner middle part of the movable gear (34), the middle part of the rotating shaft (36) is fixed to the inner front end of the support mechanism (37), and the adjustment block (31) is installed at the rear end of the eddy current detector main body (1).

2. The eddy current detection device for efficient rail flaw detection according to claim 1, wherein: The support mechanism (37) includes a support block (371), a chute (372), an adjustment slider (373), a first support rod (374), a second support rod (375), a spring (376) and an adjustment block (377). The upper inner side of the support block (371) is provided with a chute (372), the adjustment slider (373) is slidably matched with the inner side of the chute (372), the upper inner side of the adjustment slider (373) is movably connected to the bottom of the first support rod (374) by a movable shaft, the upper end of the first support rod (374) is slidably matched with the inside of the second support rod (375), the inside of the second support rod (375) is provided with a spring (376), the upper end of the second support rod (375) is movably connected to the lower inner side of the adjustment block (377) by a movable shaft, the inner front end of the support block (371) is fixed to the middle part of the rotating shaft (36), and the adjustment block (377) is fixed to the upper inner side of the rear end of the adjustment block (31).

3. The eddy current detection device for efficient flaw detection of steel rails according to claim 1, characterized in that: The driving gear (33), the movable gear (34) and the rack groove (35) are symmetrically arranged on the left and right sides inside the adjustment block (31).

4. The eddy current detection device for efficient flaw detection of steel rails according to claim 1, wherein: The movable gear (34) rotates meshingly along the connection of the driving gear (33) and the rack groove (35), and the movable gear (34) adjusts the circular rotation angle along the inner side of the rack groove (35).

5. The eddy current detection device for efficient rail flaw detection according to claim 1, characterized in that: The rotating shaft (36) horizontally penetrates through the inner front end of the support mechanism (37), and the rotating shaft (36) and the support mechanism (37) are arranged in the same horizontal line as the two movable gears (34).

6. The eddy current detection device for efficient rail flaw detection according to claim 2, characterized in that: The upper inner side of the adjustment slider (373) and the inner rear side of the adjustment block (377) are both provided with movable shafts, and the first support rod (374) and the second support rod (375) are movably connected to the adjustment slider (373) and the adjustment block (377) respectively through the two movable shafts.

7. The eddy current detection device for efficient flaw detection of steel rails according to claim 2, characterized in that: The first support rod (374), the second support rod (375) and the spring (376) are arranged obliquely, and the first support rod (374) is elastically engaged with the inner side of the second support rod (375) through the spring (376).

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