Centering device of steel rail ultrasonic flaw detector

Abstract

The utility model discloses a centering device of a steel rail ultrasonic flaw detector, which mainly comprises a main beam, an upper base plate, a lower base plate, a water spraying system, a guide plough and a guide wheel, the main body is made of aluminum alloy, the carrying is convenient, the number of ultrasonic detection wheels can be flexibly determined, and the angle and the horizontal position can be electrically adjusted in a high-precision manner.

Description

Technical Field

[0001] The utility model relates to an alignment device for a special flaw detection device that travels on a track to detect internal damages of steel rails, specifically an alignment device for a double-rail type ultrasonic steel rail flaw detector. Background Art

[0002] Steel rail flaw detectors are widely applicable to detecting steel rails used in existing ordinary railways, high-speed railways, urban subways or light rails. Currently, the most widely used flaw detector is the ultrasonic flaw detector. The principle of ultrasonic detection is that when the ultrasonic probe (piezoelectric wafer) in the probe is excited by the ultrasonic emission signal (i.e., "high-voltage pulse") emitted by the system, it will vibrate according to its own inherent vibration frequency. The ultrasonic wave propagates in the steel rail. When encountering cracks, defects or cavities in the steel rail, part of the ultrasonic wave energy will be reflected back. The reflected energy is received by the wafer and is then the echo. The echoes obtained by various ultrasonic probes are converted into electrical signals in the ultrasonic transducer, and then through analog processing, digital processing, spatial conversion, and damage identification, and finally displayed in the form of an image on the display control computer to complete the detection process of damages in different parts and different forms of the steel rail.

[0003] The ultrasonic detection wheel is the "eye" of the entire detection system. During detection, it is necessary to ensure that the "eye" can be at the center of the steel rail and scan the steel rail perpendicularly to the center of the steel rail. To ensure that the ultrasonic detection wheel can adapt to steel rails with different inclination angles and arcs, and always be at the center of the steel rail and perpendicular to it, a device that can adjust the horizontal position and inclination angle of the ultrasonic detection wheel is required, that is, an alignment device. At the same time, the alignment device needs to have a water spraying function to ensure that there is no gap between the ultrasonic detection wheel and the steel rail, and the transmission of ultrasonic waves will not be attenuated. Summary of the Utility Model

[0004] In view of the need for adjusting the ultrasonic detection wheel, the utility model proposes an alignment device made of aluminum alloy, which is convenient for adjustment and handling.

[0005] The specific technical solution of the utility model is as follows:

[0006] An alignment device for a double-rail type ultrasonic steel rail flaw detector, which mainly includes: a main beam, an upper substrate, a lower substrate, a water spraying system, support legs, a guiding plow, guiding wheels, a dovetail frame, side handles, an upper handle, and a mudguard, where:

[0007] The main beam includes: lower bent arms, one on each of the left and right sides, connected to the main beam; a shaft with a spring is installed on the lower bent arm; a moving slider is installed on the shaft with a spring, and the moving slider is connected to the support legs through a connecting block to ensure that the guide wheels on the centering device can closely adhere to the inner side of the rail; a protection plate is located on the lower bent arms on both sides to prevent the coupling water of the ultrasonic probe from splashing onto the moving slider and the shaft with a spring; a bull nose wrench is on the main beam to fix the main beam and the body of the flaw detector vehicle;

[0008] The upper substrate is formed by bending sheet metal, and the following are installed below: 4 horizontal shaft seats, 1 worm horizontal motor housing with a lead screw, 1 horizontal lead screw seat, and 4 support legs. A horizontal shaft is installed on every two horizontal shaft seats, and a horizontal slider is installed on the horizontal shaft. The other end of the lead screw in the horizontal motor housing passes through the horizontal motor seat, and the middle of the lead screw is threadedly connected to the horizontal moving block. The horizontal moving block is fixed on the translation plate, and the horizontal moving block drives the translation plate to move horizontally on the horizontal slider as the motor rotates.

[0009] The lower substrate is processed from aluminum alloy plates. Arc-shaped guide rails are installed on its left and right sides, an angle motor housing and an angle lead screw seat are installed above, and a dovetail bracket is installed below. An ultrasonic probe is installed on the dovetail bracket. The lead screw of the angle motor housing passes through the angle lead screw seat, and the angle moving block is threadedly connected to the lead screw and fixed below the translation plate. Bearing seats are installed below the left and right sides of the translation plate. 3 roller bearings on each side are installed on the bearing seats on both sides through screws, and the roller bearings are arranged with 2 above and 1 below. The arc-shaped guide rails on both sides are clamped between the upper and lower roller bearings on both sides. When the lead screw in the angle motor housing rotates, the lower substrate will rotate at an angle due to the limitation of the arc-shaped guide rails.

[0010] The water spraying system includes: a water pipe, a filter, a front and rear water spraying switching switch, a four-way joint, a nozzle bracket, and a nozzle. The incoming water passes through the filter and enters the front and rear spraying switching switch. The switch controls whether to spray water in the front or the rear. If spraying in the front, the water enters the four-way joint on the right side in the figure through the upper water pipe and finally sprays out through the nozzle.

[0011] The guiding plow is installed on the support leg through a pressing block, and the guide wheel is installed on a shaft, and the shaft is installed on the support leg.

[0012] The specific splicing method of the centering device:

[0013] The upper handle and the side handle are fixed on the upper substrate. The upper substrate and the components on it are fixed on the main beam assembly through 4 support legs. The lower substrate and the components installed on it are fixed on the upper substrate through the translation plate. The ultrasonic probe is installed on the dovetail bracket, and the dovetail bracket is fixed on the lower substrate.

[0014] Preferably, it has two upper handles and two side handles, so it can be carried by one person using the upper wrench or by two people using the side handles.

[0015] Preferably, the rotation of the worm motor with a lead screw drives the movement block on the lead screw to move, thereby electrically adjusting the angle and horizontal position of the ultrasonic probe wheel.

[0016] Preferably, its water path is equipped with a filtering device for filtering the incoming water to prevent impurities from clogging the nozzle.

[0017] Preferably, it has a platform-type lower substrate, and by changing the number of dovetail brackets installed on the lower substrate, one or more ultrasonic probe wheels can be flexibly installed.

[0018] Preferably, the angle is adjusted by moving the arc-shaped guide rail between the rolling bearings.

[0019] Advantages of the present utility model

[0020] Through the rotation of the worm motor with a lead screw, the movement block on the lead screw is driven to move, thereby electrically adjusting the angle and horizontal position of the ultrasonic probe wheel. The adjustment speed is controllable, the accuracy is high, and it is silent. Description of the drawings

[0021] Figure 1 It is an overall picture of the double-rail type rail ultrasonic flaw detector.

[0022] Figure 2 It is an overall installation diagram of the centering device.

[0023] Figure 3 It is an assembly diagram of the main beam and its related components.

[0024] Figure 4 It is an assembly diagram of the upper substrate and its related components.

[0025] Figure 5 It is an assembly diagram of the lower substrate and its related components.

[0026] Figure 6 It is an assembly diagram of the ultrasonic probe wheel on the lower substrate.

[0027] Figure 7 It is a water path connection diagram.

[0028] Figure 8 It is an assembly diagram of the guiding plow guide wheel and its related components.

[0029] Figure 9 It is an exploded view of the main components of the centering device. Specific embodiments

[0030] The present utility model will be further described below in conjunction with embodiments, but the protection scope of the present utility model is not limited thereto:

[0031] Such as Figures 1-9As shown in the figure, a centering device for a rail ultrasonic flaw detector, the centering device includes: a main beam 1, an upper substrate 2, a lower substrate 3, support legs 5, a guiding plow 8, guiding wheels 9, a dovetail bracket 10, a side handle 6, and an upper handle 7, where:

[0032] The upper handle 7 and the side handle 6 are fixed on the upper substrate 2. The upper substrate 2 is fixed on the main beam 1 assembly through 4 support legs 5. The lower substrate 3 is fixed on the upper substrate 2 through a translation plate 2-1. The ultrasonic detection wheel 10-1 is installed on the dovetail bracket 10, and the dovetail bracket is fixed on the lower substrate 3; 4 support legs 5 are arranged below the four corners of the upper substrate 24. A shaft 5-1 is arranged between the bottoms of two support legs 5, and the guiding wheel 9 is installed on the shaft 5-1; the guiding plow 8 is installed on the support leg 5 through a pressing block 5-2.

[0033] As Figure 3 shown, the main beam 1 includes: a main beam body, which is a crossbeam structure; lower bent arms 1-5, one on each of the left and right sides, connected to the main beam body; a shaft 1-1 with a spring is installed on the lower bent arm 1-5; a moving slider 1-2 is installed on the shaft 1-1 with a spring, and the moving slider 1-2 is connected to the support leg 5 through a connecting block 1-3, used to ensure that the guiding wheel 9 on the centering device can closely adhere to the inner side of the rail; protection plates 1-4 are located on the lower bent arms 1-5 on both sides, used to prevent the coupling water of the ultrasonic detection wheel from splashing onto the moving slider 1-2 and the shaft 1-1 with a spring; a bull nose wrench 1-6 is on the main beam body, used to fix the main beam on the flaw detection vehicle body.

[0034] As Figure 4 shown, the following are installed below the upper substrate 2: 4 horizontal shaft seats 2-3, a horizontal motor housing 2-2 with a lead screw, 1 horizontal lead screw seat 2-7, and 4 support legs 5; the 4 horizontal shaft seats 2-3 are arranged at the vertices of a rectangle. A horizontal shaft 2-4 is installed on every two horizontal shaft seats 2-3, and a horizontal slider 2-5 is installed on the horizontal shaft 2-4; the other end of the lead screw of the horizontal motor housing 2-2 passes through the horizontal lead screw seat 2-7, and a horizontal moving block 2-6 is connected to the lead screw in the middle through a thread. The horizontal moving block 2-6 is fixed on the translation plate 2-1, and the horizontal moving block 2-6 drives the translation plate 2-1 to move horizontally on the horizontal slider 2-5 as the motor rotates.

[0035] In a preferred embodiment, the upper substrate 2 is formed by bending sheet metal.

[0036] As Figure 5As shown, arc-shaped guide rails 3-6 are installed on the left and right sides of the lower substrate 3, an angle motor housing 3-1 with a lead screw and an angle lead screw seat 3-4 are installed above it, a dovetail bracket 10 is installed below the lower substrate 3, and an ultrasonic probe wheel 10-1 is installed on the dovetail bracket 10; the lead screw of the angle motor housing 3-1 passes through the angle lead screw seat 3-4, the angle moving block 3-3 is threadedly connected to the lead screw and fixed below the translation plate 2-1; bearing seats 3-7 are installed below the left and right sides of the translation plate 2-1 of the upper substrate 2, and three roller bearings 3-5 on each side are installed on the bearing seats 3-7 on both sides through screws; the arc-shaped guide rails 3-6 on both sides are clamped between the upper and lower roller bearings 3-5 on both sides; when the lead screw in the angle motor housing 3-1 rotates, the lower substrate 3 will rotate at an angle due to the limitation of the arc-shaped guide rails 3-6.

[0037] In Figure 5 the illustrated embodiment, the roller bearings 3-5 are arranged with 2 on the upper side and 1 on the lower side.

[0038] In a preferred embodiment, the lower substrate 3 is processed from an aluminum alloy plate.

[0039] Combined with Figure 1 , the centering device further includes a water spraying system 4, and the water spraying system 4 includes: a water pipe 4-1, a filter 4-2, a front and rear water spraying switching switch 4-3, a four-way joint 4-4, a nozzle bracket 4-5, and a nozzle 4-6; the incoming water passes through the filter 4-2 and enters the front and rear spraying switching switch 4-3, and the switch controls whether to spray water in the front or the rear. If spraying in the front, the water enters the four-way joint 4-4 on the right side of the figure through the upper water pipe and finally sprays out through the nozzle.

[0040] The following further describes the details of the corresponding components in combination with each drawing:

[0041] As Figure 1 shown.

[0042] Describes an overall picture of a double-rail type rail ultrasonic flaw detector. The centering device 12 is loaded on the left and right sides of the flaw detection traveling platform 11, and the ultrasonic probe wheel 10-1 is installed on the centering device 12 through a dovetail bracket.

[0043] As Figure 2 shown.

[0044] Describes the overall installation diagram of the centering device, which is mainly composed of components such as the main beam 1, the upper substrate 2, the lower substrate 3, the water spraying system 4, the support legs 5, the side handle 6, the upper handle 7 and their related components.

[0045] As Figure 3 shown.

[0046] The assembly drawing of the main beam and its related components is described, including a lower bent arm 1-5 on each of the left and right sides, which is connected to the main beam 1, and together they form the main support structure of the centering device; a shaft 1-1 with a spring is installed below the lower bent arm 1-5, a moving slider 1-2 is installed on the shaft 1-1 with a spring, the moving slider 1-2 is fixed to the support leg 5 through a connecting block 1-3, and the moving slider 1-2 with a spring is pushed by the spring to drive the support leg 5 and the rim of the guide wheel 9 above it to closely adhere to the inner side of the rail; two protective plates 1-4 are located on the lower bent arms 1-5 on both sides, which are used to prevent the coupling water of the ultrasonic probe wheel from splashing onto the moving slider 1-2 and causing unsmooth movement; a bull nose wrench 1-6 is on the main beam 1, which is used to fix the main beam and the body of the flaw detection vehicle.

[0047] As Figure 4 shown.

[0048] The assembly drawing of the upper substrate and its related components is described, including 1 upper substrate 2, 4 horizontal axle seats 2-3, which are fixed below the upper substrate 2, and a horizontal shaft 2-4 is installed on every two horizontal axle seats 2-3, a horizontal slider 2-5 is installed on the horizontal shaft 2-4, and a translation plate 2-1 is fixed below the two horizontal sliders 2-5. There is also 1 horizontal motor housing 2-2 with a lead screw, 1 horizontal lead screw seat 2-7, and 4 support legs 5 installed on the upper substrate 2. The other end of the lead screw of the horizontal motor housing 2-2 passes through the horizontal lead screw seat 2-7, and the lead screw is threadedly connected to the horizontal moving block 2-6 in the middle. The horizontal moving block 2-6 is fixed above the translation plate 2-1. The horizontal moving block 2-6 drives the translation plate 2-1 to horizontally move on the horizontal slider 2-5 as the motor rotates, driving the lower substrate 1 and the dovetail bracket to realize the horizontal adjustment of the ultrasonic probe wheel.

[0049] As Figure 5 shown.

[0050] The assembly drawing of the lower substrate and its related components is described, including 1 lower substrate 3, with arc-shaped guide rails 3-6 installed on its left and right sides, and 1 angle motor housing 3-1 with a lead screw and 1 angle lead screw seat 3-4 installed above the lower substrate 3. The lead screw of the angle motor housing 3-1 passes through the angle lead screw seat 3-4, and the angle moving block 3-3 is threadedly connected to the lead screw and is fixed below the translation plate 2-1. Bearing seats 3-7 are installed below the left and right sides of the translation plate 2-1, and there are 3 roller bearings 3-5 on the inner side of each bearing seat 3-7 on each side. The roller bearings 3-5 are arranged with 2 on the upper side and 1 on the lower side, and the arc-shaped guide rails 3-6 on both sides are clamped between the upper and lower roller bearings 3-5 on both sides. When the lead screw in the angle motor housing 3-1 rotates, the lower substrate 3 will rotate at an angle due to the restriction of the arc-shaped guide rails 3-6, driving the dovetail bracket 10 below it and the ultrasonic probe wheel 10-1 installed on it to rotate, thereby realizing the angle adjustment of the ultrasonic probe wheel.

[0051] As Figure 6 shown.

[0052] It describes the assembly diagram of the ultrasonic detection wheel on the lower substrate, including 1 to 2 dovetail brackets 10, 1 to 2 ultrasonic detection wheels 10-1. The dovetail brackets 10 are installed below the lower substrate 3, and the ultrasonic detection wheels 10-1 are installed on the dovetail brackets. The lower substrate 3 is a platform structure, and it can be flexibly decided to install 1 or 2 ultrasonic detection wheels.

[0053] As Figure 7 shown.

[0054] It describes the waterway connection diagram, including several water pipes 4-1, 1 filter 4-2, 1 front and rear water spray switching switch (4-3, 2 tees 4-4, 2 nozzle brackets 4-5, 6 nozzles 4-6. The incoming water enters the front and rear spray switching switch 4-3 through the filter 4-2. The switch controls whether to spray water in the front or the rear. If spraying in the front, the water enters the tee 4-4 on the right side of the figure through the upper water pipe and finally sprays out through 3 nozzles.

[0055] As Figure 8 shown, it describes the assembly diagram of the guiding plow guiding wheel and its related components. The guiding plow 8 is installed on the support leg 5 through the pressing block 5-2, the guiding wheel 9 is installed on the shaft 5-1, and the shaft 5-1 is installed on the support leg 5.

[0056] As Figure 9 shown, it describes the exploded view of the main components of the centering device, including 1 main beam 1, 1 upper substrate 2, 1 lower substrate 3, 4 support legs 5, 2 dovetail brackets 10, etc. It can be seen from the exploded view the assembly method of the main components of the centering device.

[0057] The specific embodiments described in this article are only examples to illustrate the spirit of the present utility model. Those skilled in the technical field to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A centering device for a rail ultrasonic flaw detector, characterized in that The centering device comprises: a main beam (1), an upper base plate (2), a lower base plate (3), a supporting leg (5), a guide plow (8), a guide wheel (9), a dovetail frame (10), a side handle (6), and an upper handle (7), wherein: The upper handle (7) and the side handle (6) are fixed on the upper base plate (2); the upper base plate (2) is fixed on the main beam (1) assembly through four supporting legs (5); the lower base plate (3) is fixed on the upper base plate (2) through a translation plate (2-1); the ultrasonic probe wheel (10-1) is mounted on a dovetail frame (10); and the dovetail frame is fixed on the lower base plate (3); the four supporting legs (5) are arranged below the four corners of the upper base plate (2); an axis (5-1) is arranged between the bottoms of two supporting legs (5); and the guide wheel (9) is mounted on the axis (5-1); and the guide plow (8) is mounted on the supporting legs (5) through a pressing block (5-2).

2. The centering device according to claim 1, characterized in that The main beam (1) comprises: a main beam body, which is a crossbeam structure; lower curved arms (1-5), one on each side, connected to the main beam body; a shaft (1-1) with a spring installed on the lower curved arm (1-5); a movable slider (1-2), which is installed on the shaft (1-1) with a spring, and the movable slider (1-2) is connected to a support leg (5) through a connecting block (1-3) to ensure that the guide wheel (9) on the centering device can be closely attached to the inner side of the rail; protective plates (1-4), which are located on the lower curved arms (1-5) on both sides, and are used to prevent the coupling water of the ultrasonic detection wheel from being thrown onto the movable slider (1-2) and the shaft (1-1) with a spring; and a horn wrench (1-6) on the main beam body, which is used to fix the main beam on the body of the flaw detection vehicle.

3. The centering device according to claim 1, characterized in that Installed below the upper base plate (2) are: 4 horizontal shaft seats (2-3), a horizontal motor compartment (2-2) with a screw rod, a horizontal screw rod seat (2-7), and 4 support legs (5); the 4 horizontal shaft seats (2-3) are arranged at the vertices of a rectangle, a horizontal shaft (2-4) is installed on every two horizontal shaft seats (2-3), and a horizontal slider (2-5) is installed on the horizontal shaft (2-4); the other end of the screw rod of the horizontal motor compartment (2-2) passes through the horizontal screw rod seat (2-7), the middle of the screw rod is connected to a horizontal moving block (2-6) by a thread, the horizontal moving block (2-6) is fixed on the translation plate (2-1), and the horizontal moving block (2-6) moves horizontally on the horizontal slider (2-5) with the translation plate (2-1) as the motor rotates.

4. The centering device according to claim 1, characterized in that The upper base plate (2) is formed by bending sheet metal.

5. The centering device according to claim 1, characterized in that The left and right sides of the lower base plate (3) are provided with arc guide rails (3-6), the upper side is provided with an angle motor bin (3-1) with a screw rod and an angle screw rod seat (3-4), the lower side of the lower base plate (3) is provided with a dovetail frame (10), and the dovetail frame (10) is provided with an ultrasonic probe wheel (10-1); the screw rod of the angle motor bin (3-1) passes through the angle screw rod seat (3-4), and the angle moving block (3-3) is connected to the screw rod by threads and is fixed on the translation plate (2-1); bearing seats (3-7) are installed below the left and right sides of the translation plate (2-1) of the upper base plate (2), and three roller bearings (3-5) on each side are installed on the bearing seats (3-7) on both sides by screws; the arc guide rails (3-6) on both sides are clamped by the roller bearings (3-5) arranged up and down on both sides; when the screw rod in the angle motor compartment (3-1) rotates, the lower base plate (3) will rotate at an angle due to the restriction of the arc guide rails (3-6).

6. The centering device according to claim 5, characterized in that: The roller bearings (3-5) are arranged in a 2-up and 1-down arrangement.

7. The centering device according to claim 1, characterized in that The lower base plate (3) is made from an aluminum alloy plate.

8. The centering device according to claim 1, characterized in that The centering device also includes a water spray system (4), which includes: a water pipe (4-1), a filter (4-2), a front and rear water spray switching switch (4-3), a four-way (4-4), a nozzle bracket (4-5), and a nozzle (4-6); the incoming water passes through the filter (4-2) and enters the front and rear spray switching switch (4-3), and the switch controls whether to spray water from the front or the back. If spraying from the front, the water enters the four-way (4-4) on the right side of the figure through the upper water pipe, and finally enters the nozzle for spraying.

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