Magnetic flux leakage detection device for sliding track

Abstract

The utility model relates to the technical field of sliding tracks, and provides a sliding track magnetic flux leakage detection device, which comprises a main body box and an adjusting mechanism, and is characterized in that the adjusting mechanism comprises a rotating rod rotationally sleeved on the inner top wall of the main body box, and a worm gear and a rotating disc which are fixedly connected at the two ends of the rotating rod. According to the magnetic flux leakage detection device, magnetic flux leakage detection can be carried out on the sliding track in different situations, a worm can be driven to rotate by rotating a handle, a rotating rod, a worm gear and a rotating disc can rotate through rotation of the worm, and therefore the two supports can move close to or away from each other through a connecting rod and a connecting block; and the positions of the wheels, the permanent magnets and the magnetic induction sensors can be adjusted according to the positions of the two sliding rails, so that the device has a wider application range, and the practicability of the device is improved. According to the technical scheme, the problem that in the prior art, the magnetic flux leakage detection requirements under various different conditions cannot be met is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sliding tracks, and in particular to a magnetic flux leakage detection device for sliding tracks. Background Art

[0002] A slide track is a device used to guide and support objects or equipment sliding along a specific path.

[0003] Magnetic flux leakage testing refers to the formation of a leakage magnetic field on the surface of a ferromagnetic material due to defects on the surface or near the surface of the test piece after the ferromagnetic material is magnetized. People can find defects by detecting changes in the leakage magnetic field. Magnetic flux leakage testing is a very important non-destructive testing method with a wide range of applications. When it is used in combination with other methods, it can provide a quick and inexpensive assessment of ferromagnetic workpieces.

[0004] In the prior art, the utility model with the authorization announcement number CN209946069U is named as: a rail magnetic leakage detection device, including a detection trolley and a magnetic leakage detection device, the detection trolley includes a vehicle-mounted workstation and a drive axle box, the magnetic leakage detection device includes a support frame, a screw, a drive chassis and a magnetic leakage detector, the magnetic leakage detector includes a magnet device and a Hall sensor, the Hall sensor is used to convert the magnetic signal into an electrical signal, and transmit the electrical signal to the vehicle-mounted workstation, and the vehicle-mounted workstation processes the electrical signal to determine the defects of the rail. The utility model controls the magnetic leakage detection device installed on both sides of the detection trolley to collect defect signals of the rail through the staff driving the rail detection trolley, and then processes the signal online through the vehicle-mounted workbench to realize real-time monitoring of rail defects, so as to take maintenance measures and ensure the operation safety of the high-speed railway.

[0005] However, during the use of the above-mentioned device, it was found that the positions of the detection device and the wheels are fixed. At the same time, due to the different usage scenarios of the sliding track, the distance between the two tracks will change. If the positions of the detection device and the wheels cannot be adjusted according to the distance between the tracks, the device will have certain limitations and cannot meet a variety of different actual detection needs. Utility Model Content

[0006] The utility model provides a sliding track magnetic flux leakage detection device, which solves the problem that the related technology cannot meet the magnetic flux leakage detection requirements in various situations.

[0007] The technical solution of the utility model is as follows: a sliding track magnetic leakage detection device, including a main body box and an adjustment mechanism, the adjustment mechanism includes a rotating rod rotatably mounted on the top wall of the main body box, and a worm gear and a turntable fixedly connected to both ends of the rotating rod, the upper surface of the main body box is equipped with a worm meshing with the worm gear, the bottom surface of the turntable is hinged to two connecting rods through a pin shaft, one end of each of the connecting rods is hinged to a connecting block that can slide on the inner wall of the main body box, the two connecting blocks are fixedly connected to a bracket on one side away from each other, and two wheels are installed at the bottom end of each of the brackets, and a detection mechanism is provided on the outside of the main body box.

[0008] Furthermore, both ends of the worm shaft are fixedly connected with handles, and the outer surface of each handle is coated with a protective layer. By providing the handles, the contact area of ​​the worm shaft end can be increased, thereby facilitating the rotation of the worm.

[0009] Furthermore, two guide columns are fixedly connected to the inner wall of the main box, and the two sides of the two connecting blocks are slidably sleeved on the outer surfaces of the two guide columns respectively. By providing the guide columns, the connecting blocks can be more stable when moving.

[0010] Furthermore, the detection mechanism includes a power supply installed on the upper surface of the main box and an integrated circuit board electrically connected to the power supply through a wire. The upper surface of the main box is fixedly connected to a touch display screen, and the touch display screen is electrically connected to the integrated circuit board through a wire. By setting up the power supply, power can be provided to the electrical components in the device. By setting up the integrated circuit board, the working status of the electrical components in the device can be conveniently controlled. By setting up the touch display screen, whether the track is leaking magnetic flux can be conveniently displayed.

[0011] Furthermore, a protective cover is fixedly connected to the upper surface of the main box, and evenly distributed ventilation holes are opened on the back of the protective cover. The power supply and the integrated circuit board are both located inside the protective cover. By providing the protective cover, the power supply, the integrated circuit board and the touch screen can be protected to reduce the probability of damage to the above components. By providing the ventilation holes, the breathability of the protective cover can be ensured to avoid overheating inside the protective cover.

[0012] Furthermore, a cylinder is installed on the bottom surface of each of the brackets, a permanent magnet is installed on the output end of each of the cylinders, and a magnetic induction sensor electrically connected to the integrated circuit board is installed on the bottom surface of each of the permanent magnets. By setting the permanent magnet, the work of magnetizing the track to be detected can be facilitated, and by setting the magnetic induction sensor, the leakage magnetic field signal can be obtained, which facilitates the detection of whether the sliding track is leaking magnetic field.

[0013] Furthermore, a servo motor is fixedly connected to the rotating shaft end of each wheel, and the four servo motors are electrically connected to the integrated circuit board. By setting up the servo motor, the wheel can be conveniently driven to rotate, so that the device can slide on the inspected track, facilitating convenient inspection work on different track sections.

[0014] Furthermore, alarm lights are installed at the four corners of the upper surface of the main box, and two symmetrical buzzers are installed on the upper surface of the main box. Each of the alarm lights and buzzers is electrically connected to the integrated circuit board. By setting up the alarm lights and buzzers, when an abnormal situation is detected, sound and light warnings can be issued in time, so that the staff can find the location interval where the leakage magnetic field occurs more quickly.

[0015] The working principle and beneficial effects of the utility model are:

[0016] 1. In the utility model, by setting the adjustment mechanism and the detection mechanism to cooperate with each other, the leakage magnetic detection work can be performed on the sliding track under different situations. The worm can be driven to rotate by turning the handle, and the rotation of the worm can make the rotating rod, the worm wheel and the turntable rotate. In this way, through the setting of the connecting rod and the connecting block, the two brackets can be moved closer to or away from each other. The positions of the wheels, permanent magnets and magnetic induction sensors can be adjusted according to the positions of the two sliding tracks, so that the device has a wider range of applications and improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0020] Figure 3 This is a schematic diagram of the top view structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0022] In the figure: 1. main box; 2. adjustment mechanism; 201. rotating rod; 202. worm gear; 203. turntable; 204. worm; 205. handle; 206. connecting rod; 207. connecting block; 208. guide column; 209. bracket; 210. wheel; 3. detection mechanism; 301. power supply; 302. integrated circuit board; 303. touch screen; 304. protective cover; 305. vent; 306. cylinder; 307. permanent magnet; 308. magnetic induction sensor; 309. servo motor; 310. warning light; 311. buzzer. DETAILED DESCRIPTION

[0023] The following will be combined with 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 of 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.

[0024] Example 1

[0025] like Figure 1 to Figure 4 As shown, this embodiment proposes a sliding track magnetic leakage detection device, including a main box 1 and an adjustment mechanism 2, the adjustment mechanism 2 includes a rotating rod 201 rotatably mounted on the inner top wall of the main box 1, and a worm gear 202 and a turntable 203 fixedly connected to both ends of the rotating rod 201. When the worm gear 202 rotates, the turntable 203 can be driven to rotate through the rotating rod 201.

[0026] A worm 204 meshing with the worm wheel 202 is installed on the upper surface of the main box 1, and handles 205 are fixedly connected to both ends of the rotating shaft of the worm 204. The outer surface of each handle 205 is coated with a protective layer. By setting the handle 205, the contact area of ​​the rotating shaft end of the worm 204 can be increased, making it easier to rotate the worm 204.

[0027] At the same time, the combination of the worm wheel 202 and the worm 204 has the effect of deceleration and self-locking. The worm 204 can drive the worm wheel 202 to rotate, while the worm wheel 202 cannot drive the worm 204 to rotate. Therefore, the rotation state of the rotating rod 201 can be restricted. At the same time, when the rotation state of the rotating rod 201 is restricted, it means that the rotation state of the turntable 203 is restricted, which prevents the turntable 203 from rotating randomly, making it convenient to limit the position of other components.

[0028] The bottom surface of the turntable 203 is hinged with two connecting rods 206 through a pin shaft, and one end of each connecting rod 206 is hinged with a connecting block 207 that can slide on the inner wall of the main box 1. The two connecting blocks 207 are respectively slidably mounted on both sides of the inner wall of the main box 1. When the turntable 203 rotates, the two connecting rods 206 can be used to make the two connecting blocks 207 move closer to or away from each other, which can facilitate the adjustment of the positions of other components.

[0029] Two guide posts 208 are fixedly connected to the inner wall of the main box 1, and the two sides of the two connecting blocks 207 are slidably mounted on the outer surfaces of the two guide posts 208 respectively. By providing the guide posts 208, the connecting blocks 207 can be more stable when moving.

[0030] A bracket 209 is fixedly connected to one side of the two connecting blocks 207 away from each other, and two wheels 210 are installed at the bottom end of each bracket 209 .

[0031] When the two connecting blocks 207 move toward or away from each other, the positions of the four wheels 210 can be changed through the two brackets 209, so that the device can be installed on sliding tracks with different spacings, thereby meeting the leakage magnetic detection needs in different situations and improving the practicality of the device.

[0032] And if Figure 2 As shown, a counterweight is fixedly connected to the bottom surface of the main box 1. The counterweight can lower the center of gravity of the device so that the device can move more stably on the track to be detected, which is beneficial to the magnetic leakage detection of the track.

[0033] Example 2

[0034] like Figure 1 to Figure 4 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that a detection mechanism 3 is provided on the outside of the main box 1, and the detection mechanism 3 includes a power supply 301 installed on the upper surface of the main box 1 and an integrated circuit board 302 electrically connected to the power supply 301 through a wire, and a touch display screen 303 is fixedly connected to the upper surface of the main box 1, and the touch display screen 303 is electrically connected to the integrated circuit board 302 through a wire.

[0035] By setting the power supply 301, power can be provided to the electrical components in the device. By setting the integrated circuit board 302, the working state of the electrical components in the device can be conveniently controlled. By setting the touch display screen 303, whether the track is leaking magnetic flux can be conveniently displayed.

[0036] The integrated circuit board 302 is an existing mechanism, and the model of the integrated circuit board 302 is not limited here. However, it should be noted that the integrated circuit board 302 must at least have the functions of current distribution, automatic programming, intelligent processing, signal conversion, and wireless signal reception and transmission, so that it is convenient to control the operation of other electrical components and facilitate the realization of more practical leakage magnetic detection work.

[0037] Preferably, a GPS positioning module may be installed inside the integrated circuit board 302, so that the staff can remotely grasp the location of the device and use it conveniently.

[0038] A protective cover 304 is fixedly connected to the upper surface of the main box 1 , and evenly distributed vents 305 are provided on the back of the protective cover 304 . The power supply 301 and the integrated circuit board 302 are both located inside the protective cover 304 .

[0039] By providing the protective cover 304, the power supply 301, the integrated circuit board 302 and the touch screen 303 can be protected to reduce the probability of damage to the above components. By providing the vents 305, the ventilation effect of the protective cover 304 can be ensured to avoid overheating inside the protective cover 304.

[0040] A cylinder 306 is installed on the bottom surface of each bracket 209, a permanent magnet 307 is installed on the output end of each cylinder 306, and a magnetic induction sensor 308 electrically connected to the integrated circuit board 302 is installed on the bottom surface of each permanent magnet 307. Figure 2 and Figure 3 As shown, the positions of the permanent magnet 307 and the magnetic induction sensor 308 correspond to the position of the servo motor 309 .

[0041] Since the cylinder 306 is fixedly connected to the bottom surface of the bracket 209, when the position of the bracket 209 changes, the positions of the permanent magnet 307 and the magnetic induction sensor 308 will change accordingly, and can always correspond to the position of the wheel 210, making it convenient to perform leakage magnetic detection on the sliding track under different conditions.

[0042] The permanent magnet 307 and the magnetic induction sensor 308 are both existing mechanisms. By setting the permanent magnet 307, the work of magnetizing the detected track can be facilitated. By setting the magnetic induction sensor 308, the leakage magnetic field signal can be obtained, which is convenient for detecting whether the sliding track has magnetic leakage. The magnetic induction sensor 308 can be a Hall sensor, but there are no excessive restrictions on the magnetic induction sensor 308, and it is just an example to illustrate it.

[0043] To detect whether the track has magnetic leakage, the track should be magnetized first. By setting a permanent magnet 307, the track can be magnetized without an excitation current source. After the track is magnetized, if the material inside the track is continuous and uniform, the magnetic induction lines in the track will be constrained in the track, the magnetic flux is parallel to the track surface, and there is almost no magnetic field on the track surface.

[0044] If the magnetized track has defects, its magnetic permeability is very small and its magnetic resistance is very large, which will cause the magnetic flux in the magnetic circuit to be distorted and its induction lines to change. Part of the magnetic flux will pass through the defect directly or bypass the defect from the inside of the track, and part of the magnetic flux will leak into the space on the track surface, thus forming a leakage magnetic field at the defect on the track surface.

[0045] Afterwards, the magnetic field leakage signal needs to be acquired through the magnetic induction sensor 308, and the signal is transmitted to the integrated circuit board 302 for processing, so as to realize the magnetic field leakage detection.

[0046] The rotating shaft end of each wheel 210 is fixedly connected to a servo motor 309, and the four servo motors 309 are electrically connected to the integrated circuit board 302. By setting the servo motor 309, the wheel 210 can be easily driven to rotate, so that the device can slide on the detected track, which is convenient for convenient detection work on different track sections. The four servo motors 309 all perform synchronous control switching through the integrated circuit board 302.

[0047] Warning lights 310 are installed at the four corners of the upper surface of the main box 1 . Two symmetrical buzzers 311 are installed on the upper surface of the main box 1 . Each warning light 310 and buzzer 311 is electrically connected to the integrated circuit board 302 .

[0048] When the magnetic induction sensor 308 detects an abnormal situation, it can transmit the signal to the integrated circuit board 302 for processing. The integrated circuit board 302 will control the four servo motors 309 to stop working at the same time, so that the device stops in the corresponding track section. At the same time, the integrated circuit board 302 will also control the alarm light 310 and the buzzer 311 to work, and issue sound and light warnings in time, so that the staff can find the location section where the leakage magnetic field occurs more quickly, which is convenient for repairing the leakage magnetic track section.

[0049] Working principle: When in use, the position of the bracket 209 is first adjusted according to the spacing between the sliding tracks. Adjusting the position of the bracket 209 means that the positions of the wheel 210, the permanent magnet 307 and the magnetic induction sensor 308 can be adjusted, so that the device can meet the leakage magnetic detection work under different requirements. At this time, the position adjustment of the bracket 209 can be achieved by rotating the handle 205. When the handle 205 is rotated, the worm 204 can be mobilized to rotate. The rotation of the worm 204 can make the worm wheel 202 rotate. The rotating rod 201 fixedly connected to the inner wall of the worm wheel 202 can make the turntable 203 fixedly connected to the other end of the rotating rod 201 rotate. When the turntable 203 rotates, the two connecting blocks 207 will move closer to or away from each other along the two guide columns 208 through the two connecting rods 206 hinged on the surface, thereby driving the two brackets 209 to move closer to or away from each other, so that the track can be adjusted. The positions of the four wheels 210 are adjusted according to the spacing of the tracks, so that the four wheels 210 can be installed on the detected tracks respectively, and then the four servo motors 309 and the two magnetic induction sensors 308 are driven to work. When the four servo motors 309 are started, the device can be moved along the detected track. The two permanent magnets 307 will magnetize the track on which the device slides, and obtain the leakage magnetic field signal through the magnetic induction sensor 308. If the magnetic induction sensor 308 detects an abnormal signal, the magnetic induction sensor 308 will transmit the signal to the integrated circuit board 302 for processing. The integrated circuit board 302 will control the four servo motors 309 to stop working at the same time, so that the device no longer moves and stops on the track section where the abnormal situation occurs. At the same time, the integrated circuit board 302 will also control the alarm light 310 and the buzzer 311 to perform sound and light warning work, so that the staff can find the abnormal track section more quickly, which is convenient for timely repairing the track.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sliding track magnetic flux leakage detection device, characterized in that: The invention comprises a main body box (1) and an adjustment mechanism (2), wherein the adjustment mechanism (2) comprises a rotating rod (201) rotatably sleeved on the inner top wall of the main body box (1), and a worm wheel (202) and a rotating disk (203) fixedly connected to both ends of the rotating rod (201); a worm wheel (204) meshing with the worm wheel (202) is mounted on the upper surface of the main body box (1); the bottom surface of the rotating disk (203) is hingedly connected to two connecting rods (206) via a pin shaft; one end of each connecting rod (206) is hingedly connected to a connecting block (207) that can slide on the inner wall of the main body box (1); two connecting blocks (207) are fixedly connected to a bracket (209) on the sides away from each other; two wheels (210) are mounted on the bottom end of each bracket (209); and a detection mechanism (3) is provided on the outside of the main body box (1).

2. A sliding track magnetic flux leakage detection device according to claim 1, characterized in that: Both ends of the rotating shaft of the worm (204) are fixedly connected with handles (205), and the outer surface of each handle (205) is coated with a protective layer.

3. A sliding track magnetic flux leakage detection device according to claim 1, characterized in that: Two guide pillars (208) are fixedly connected to the inner wall of the main body box (1), and two sides of the two connection blocks (207) are slidably sleeved on the outer surfaces of the two guide pillars (208) respectively.

4. A sliding track magnetic flux leakage detection device according to claim 1, characterized in that: The detection mechanism (3) comprises a power supply (301) mounted on the upper surface of a main box (1) and an integrated circuit board (302) electrically connected to the power supply (301) via a wire, and a touch display screen (303) is fixedly connected to the upper surface of the main box (1), and the touch display screen (303) is electrically connected to the integrated circuit board (302) via a wire.

5. A sliding track magnetic flux leakage detection device according to claim 4, characterized in that: A protective cover (304) is fixedly connected to the upper surface of the main box (1), and evenly distributed ventilation holes (305) are provided on the back of the protective cover (304). The power supply (301) and the integrated circuit board (302) are both located inside the protective cover (304).

6. A sliding track magnetic flux leakage detection device according to claim 5, characterized in that: A cylinder (306) is installed on the bottom surface of each bracket (209), a permanent magnet (307) is installed on the output end of each cylinder (306), and a magnetic induction sensor (308) electrically connected to the integrated circuit board (302) is installed on the bottom surface of each permanent magnet (307).

7. A sliding track magnetic flux leakage detection device according to claim 5, characterized in that: A servo motor (309) is fixedly connected to the rotating shaft end of each wheel (210), and the four servo motors (309) are electrically connected to the integrated circuit board (302).

8. The sliding track magnetic flux leakage detection device according to claim 5, characterized in that: Warning lights (310) are installed at the four corners of the upper surface of the main box (1), and two symmetrical buzzers (311) are installed on the upper surface of the main box (1), and each of the warning lights (310) and buzzers (311) is electrically connected to the integrated circuit board (302).

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