Steel rail flaw detection device

Abstract

The utility model relates to a steel rail flaw detection device and relates to the technical field of steel rail flaw detection. The utility model relates to a steel rail flaw detection device which comprises a rack, wherein two belt wheels are mounted on the rack; the transmission belt is matched with the two belt wheels, and the transmission belt forms a first linear section and a second linear section; the first probe frame is provided with a first locking piece and a second locking piece, the first locking piece is matched with the first linear section, and the second locking piece is matched with the second linear section; the second probe frame is provided with a third locking piece and a fourth locking piece, the third locking piece is matched with the first linear section, and the second locking piece is matched with the second linear section; the first locking piece, the second locking piece, the third locking piece and the fourth locking piece are configured to be capable of being connected with or separated from the corresponding straight line sections. The steel rail flaw detection device not only can realize the relative movement of the two probe frames, but also can realize the same-direction movement of the two probe frames, so that the flaw detection modes are enriched.

Description

Technical Field

[0001] The utility model relates to the technical field of rail flaw detection, in particular to a rail flaw detection device. Background Art

[0002] To detect rail defects, ultrasonic testing equipment is often used to scan the rails. This allows for the detection, location, and assessment of rail defects. Typically, the probe is fixed to a specific location on the rail and inspected at the corresponding weld. The probe is then moved a certain distance along the length of the rail, fixed again, and inspected at the next weld location. This process continues until all weld sections are inspected.

[0003] In related technology, Chinese patent CN 204832115 U discloses a rail flaw detection device comprising two ultrasonic probes, a base, and two probe mounting brackets. The two ultrasonic probes are mounted on the two probe mounting brackets, respectively. The base is provided with a guide rail, on which the two probe mounting brackets are mounted. The base is also provided with a position adjustment mechanism capable of driving the two probe mounting brackets to move synchronously along the guide rail. The position adjustment mechanism can drive the two probe mounting brackets to move the same distance in the same direction, thereby causing the two ultrasonic probes to move synchronously along the guide rail, continuously inspecting the rails.

[0004] Among them, it can only realize the same-direction movement of two probes, and the flaw detection mode is relatively simple. Utility Model Content

[0005] The utility model provides a rail flaw detection device, which is used to meet multiple flaw detection modes.

[0006] The utility model provides a rail flaw detection device, comprising: a frame, on which two pulleys are installed; a transmission belt, which cooperates with the two pulleys, and the transmission belt forms a first straight segment and a second straight segment parallel to each other, and the driving direction of the first straight segment is opposite to the driving direction of the second straight segment; a first probe frame, on which a first locking piece and a second locking piece are installed, the first locking piece is used to cooperate with the first straight segment, and the second locking piece is used to cooperate with the second straight segment; and a second probe frame, on which a third locking piece and a fourth locking piece are installed, the third locking piece is used to cooperate with the first straight segment, and the second locking piece is used to cooperate with the second straight segment; wherein the first locking piece, the second locking piece, the third locking piece and the fourth locking piece are constructed to be able to connect to or separate from the corresponding straight segments.

[0007] In one embodiment, the transmission belt is a toothed belt, and the first locking member includes an engaging portion, which engages with the transmission belt when the first locking member is connected to the first straight segment.

[0008] In one embodiment, the first locking member is slidably mounted on the first probe frame, so that the connection state between the first probe frame and the first straight segment is switched by sliding the first locking member.

[0009] In one embodiment, a first adjustment hole is provided on the first probe frame, an adjustment screw is installed in the first adjustment hole, and the adjustment screw is threadedly connected to the first locking member; the first probe frame is provided with a first guide groove, and the first locking member is slidably installed in the first guide groove, and screwing the adjustment screw can drive the first locking member closer to or away from the first straight line segment.

[0010] In one embodiment, the frame includes a first guide portion and a second guide portion arranged in parallel, and the first guide portion is parallel to the first straight segment; the first probe frame includes a main body, one side of the main body is slidably connected to the first guide portion, and the other side of the main body is slidably connected to the second guide portion.

[0011] In one embodiment, the first probe frame includes a main body and a connecting fork. The main body is slidably mounted on the frame. The connecting fork is rotatably connected to the main body. The connecting fork is used to be detachably connected to the ultrasonic probe.

[0012] In one embodiment, a torsion spring is provided at the connection between the main body and the connecting fork, and the torsion spring is used to drive the connecting fork to reset.

[0013] In one embodiment, the frame is mounted with an encoder, which is connected to the transmission belt.

[0014] In one embodiment, a locking member is further installed on the first probe frame, and the locking member is configured to lock or unlock the first probe frame and the frame.

[0015] In one embodiment, magnets are embedded in the interior of the housing.

[0016] Compared with the prior art, the advantage of the present invention is that, when relative movement of the two probes is required, the first locking member and the fourth locking member can be unlocked, and the second locking member and the third locking member can be locked, thereby connecting the first probe frame to the second straight line segment and the second probe frame to the first straight line segment, so that the first probe frame and the second probe frame move the same length in opposite directions when the transmission belt is driven. When the two probes need to move in the same direction, the first locking member and the third locking member can be unlocked, and the second locking member and the fourth locking member can be locked, thereby connecting the first probe frame to the second straight line segment and the second probe frame to the second probe frame, so that the first probe frame and the second probe frame move the same length in the same direction when the transmission belt is moving. In other words, the rail flaw detection device provided by the present application can not only realize the relative movement of the two probe frames, but also realize the same-direction movement of the two probe frames, enriching the flaw detection mode of the rail flaw detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the rail flaw detection device in the embodiment of the utility model;

[0019] Figure 2 It is a partial structural diagram of the rail flaw detection device at the first probe frame in an embodiment of the present utility model;

[0020] Figure 3 It is a structural schematic diagram of a part of the first straight line segment and a part of the first locking member in an embodiment of the present utility model;

[0021] Figure 4 1 is a schematic diagram of the bottom structure of the rail flaw detection device in an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the bottom structure of the first probe frame in an embodiment of the present utility model;

[0023] Figure 6 It is a partial cross-sectional schematic diagram of the connection structure between the connecting fork and the main body;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the rail flaw detection device in an embodiment of the present utility model.

[0025] Reference numerals:

[0026] 100, frame; 110, first guide portion; 120, second guide portion;

[0027] 200, transmission belt; 210, first straight segment; 220, second straight segment;

[0028] 300, first probe holder; 310, main body; 320, connecting fork; 330, adjusting screw; 340, torsion spring;

[0029] 400, second probe frame;

[0030] 510, first locking member; 511, engaging portion; 520, second locking member; 530, third locking member;

[0031] 710, encoder; 720, locking piece; 721, turntable; 722, locking screw; 730, handwheel. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] See also Figure 1-Figure 3As shown, a rail flaw detection device provided by the utility model includes:

[0034] The frame 100 has two pulleys mounted on it;

[0035] The transmission belt 200 cooperates with two pulleys, and the transmission belt 200 forms a first straight segment 210 and a second straight segment 220 that are parallel to each other. The driving direction of the first straight segment 210 is opposite to the driving direction of the second straight segment 220; that is, when the pulley drives the transmission belt 200 to transmit, the movement directions of the first straight segment 210 and the second straight segment 220 are opposite.

[0036] A first probe frame 300 , on which a first locking member 510 and a second locking member 520 are mounted, wherein the first locking member 510 is used to cooperate with the first straight segment 210 , and the second locking member 520 is used to cooperate with the second straight segment 220 ; and

[0037] The second probe frame 400 is provided with a third locking member 530 and a fourth locking member (disposed on the side of the second probe frame 400 facing the second guide portion 120 ). The third locking member 530 is used to cooperate with the first straight segment 210 , and the second locking member 520 is used to cooperate with the second straight segment 220 .

[0038] The first locking member 510, the second locking member 520, the third locking member 530, and the fourth locking member are configured to connect to or disconnect from the corresponding straight segments. Specifically, the first locking member 510 can be used to connect or disconnect the first probe frame 300 from the first straight segment 210, the second locking member 520 can be used to connect or disconnect the first probe frame 300 from the second straight segment 220, the third locking member 530 can be used to connect or disconnect the second probe frame 400 from the first straight segment 210, and the fourth locking member can be used to connect or disconnect the second probe frame 400 from the second straight segment 220.

[0039] The first probe frame 300 can be connected to the first straight segment 210 using the first locking member 510, and separated from the second straight segment 220 using the second locking member 520, allowing the first probe frame 300 to move synchronously with the first straight segment 210. Similarly, the first probe frame 300 can be separated from the first straight segment 210 using the first locking member 510, and connected to the second straight segment 220 using the second locking member 520, allowing the first probe frame 300 to move synchronously with the second straight segment 220. In other words, the movement direction of the first probe frame 300 can be switched by adjusting the first locking member 510 and the second locking member 520 installed on the first probe frame 300.

[0040] Similarly, the moving direction of the second probe frame 400 can be switched by adjusting the third locking member 530 and the fourth locking member installed on the second probe frame 400 .

[0041] When the first probe holder 300 and the second probe holder 400 need to move synchronously in the same direction, the first locking member 510 and the third locking member 530 can be connected to the first straight segment 210, and the second locking member 520 and the fourth locking member can be separated from the second straight segment 220, so that both the first probe holder 300 and the second probe holder 400 move synchronously with the first straight segment 210. Alternatively, the first locking member 510 and the third locking member 530 can be separated from the first straight segment 210, and the second locking member 520 and the fourth locking member can be connected to the second straight segment 220, so that both the first probe holder 300 and the second probe holder 400 move synchronously with the second straight segment 220. By synchronously moving the first probe holder 300 and the second probe holder 400 in the same direction, the ultrasonic probes on the two probe holders can move in the same direction and at the same speed, thereby enabling scanning of the rail series.

[0042] During some testing processes, such as sensitivity calibration or echo analysis, the two probe holders can be controlled to move closer together in opposite directions. Specifically, the first probe holder 300 can be connected to the first straight segment 210 using the first locking member 510, and the second probe holder 400 can be connected to the second straight segment 220 using the fourth locking member. Simultaneously, the second locking member 520 and the third locking member 530 can be controlled to separate the first probe holder 300 from the second straight segment 220, and the second probe holder 400 from the first straight segment 210. Through these adjustments, the first probe holder 300 can move synchronously with the first straight segment 210, while the second probe holder 400 can move synchronously with the second straight segment 220. Since the first and second straight segments 210 and 220 move in opposite directions and at equal speeds, respectively, the first and second straight segments 210 and 220 move in opposite directions and at equal speeds.

[0043] In other words, since the first probe frame 300 of the present application is equipped with a first locking member 510 and a second locking member 520, and the second probe frame 400 is equipped with a third locking member 530 and a fourth locking member, the movement directions of the first probe frame 300 and the second probe frame 400 can be flexibly adjusted to achieve the same or opposite movement of the two probe frames. This can then complete conventional rail stringing and sensitivity calibration work, satisfying a variety of flaw detection modes.

[0044] In some implementations, the transmission belt 200 is a toothed belt, and the first locking member 510 includes an engaging portion 511 . When the first locking member 510 is connected to the first straight segment 210 , the engaging portion 511 engages with the transmission belt 200 .

[0045] In other words, the toothed belt structure cooperates with the toothed meshing portion 511 to enhance the secure connection between the first straight segment 210 and the first probe frame 300 when the first locking member 510 connects the first straight segment 210 and the first probe frame 300. It will be appreciated that the second locking member 520, the third locking member 530, and the fourth locking member are also provided with meshing portions 511 that cooperate with the transmission belt 200.

[0046] In other implementations, the first locking member 510 may also adopt a splint structure, and the first straight segment 210 can be clamped by the first locking member 510 of the splint structure, so that the first probe frame 300 is connected to the first straight segment 210, and the first straight segment 210 can be loosened by the first locking member 510 of the splint structure, so that the first probe frame 300 is separated from the first straight segment 210.

[0047] In some implementations, the first locking member 510 is slidably mounted on the first probe frame 300, so that the connection between the first probe frame 300 and the first straight segment 210 can be switched by sliding the first locking member 510. Specifically, a vertically extending chute can be provided within the first probe frame 300, and the first locking member 510 can be slidably mounted within the chute to adjust the height of the first adjusting member. When the first locking member 510 is required to connect the first probe frame 300 to the first straight segment 210, the first locking member 510 can be adjusted to the same height as the first straight segment 210 by sliding the first locking member 510 so that the engaging portion 511 of the first locking member 510 can engage with the tooth structure of the first straight segment 210, thereby connecting the first probe frame 300 to the first straight segment 210. Furthermore, the first locking member 510 can be detached from the first straight segment 210 by sliding the first locking member 510 upward, thereby separating the first probe frame 300 from the first straight segment 210.

[0048] In other implementations, the first locking member 510 can be configured to be rotatably mounted on the first probe holder 300. The first locking member 510 generally has a disc-shaped structure, with radially outwardly extending protruding teeth disposed in a portion of the disc-shaped structure. The plurality of protruding teeth form an engagement portion 511 of the first locking member 510. The engagement portion 511 can be connected to or disconnected from the first straight segment 210 by rotating the first probe, thereby controlling the connection between the first probe holder 300 and the first straight segment 210.

[0049] In some implementations, the first probe holder 300 is provided with a first adjustment hole, in which an adjustment screw 330 is installed. The adjustment screw 330 is threadedly connected to the first locking member 510. The first probe holder 300 is provided with a first guide slot, in which the first locking member 510 is slidably mounted. Turning the adjustment screw 330 can drive the first locking member 510 toward or away from the first straight segment 210. In other words, the adjustment screw 330 and the first locking member 510 form a lead screw slider structure. By turning the adjustment screw 330, the position of the first locking member 510 on the first guide slot can be adjusted, thereby achieving engagement or separation between the first locking member 510 and the first straight segment 210.

[0050] It should be noted that the above mainly describes the structure of the first locking member 510 . In fact, the structures of the second locking member 520 , the second locking member 520 and the fourth locking member can be set to be the same as the first locking member 510 .

[0051] In some implementations, the rack 100 includes a first guide portion 110 and a second guide portion 120 that are arranged in parallel, and the first guide portion 110 is parallel to the first straight segment 210;

[0052] The first probe holder 300 includes a main body 310 . One side of the main body 310 is slidably connected to the first guide portion 110 , and the other side of the main body 310 is slidably connected to the second guide portion 120 .

[0053] That is, the frame 100 and the first probe frame 300 are slidably connected via the first guide portion 110 and the second guide portion 120 to ensure movement in a specific direction driven by the transmission belt 200. It is understood that the extending direction of the first guide portion 110 is the same as the extending direction of the first straight segment 210.

[0054] In some implementations, one side of the second probe frame 400 is slidably connected to the first guide portion 110, and the other side of the second probe frame 400 is slidably connected to the second guide portion 120, so as to ensure that the movement direction of the second probe frame 400 is in the same straight line as the movement direction of the first probe frame 300.

[0055] See also Figure 2 、 Figure 4 and Figure 5As shown, in some implementations, the first probe holder 300 includes a main body 310 and a connecting fork 320. The main body 310 is slidably mounted on the frame 100, and the connecting fork 320 is rotatably connected to the main body 310. The connecting fork 320 is used to detachably connect to the ultrasonic probe. Since the connecting fork 320 is used to detachably connect to the ultrasonic probe, when the ultrasonic probe needs to be replaced or adjusted, the ultrasonic probe can be removed from the connecting fork 320. This reduces the difficulty of replacing the ultrasonic probe. Figure 5 and Figure 6 As shown, a pin is provided at the connecting fork 320 , and the ultrasonic probe can be connected to the connecting fork 320 by tightening the pin, and the ultrasonic probe can be separated from the connecting fork 320 by loosening the pin.

[0056] See also Figure 5 as well as Figure 6 As shown, in some implementations, a torsion spring 340 is provided at the connection between the main body 310 and the connecting fork 320. The torsion spring 340 is used to drive the connecting fork 320 to reset. In other words, the torsion spring 340 can maintain the connecting fork 320 at a fixed angle, thereby preventing the rotation of the connecting fork 320 from affecting the detection accuracy during the flaw detection process.

[0057] See also Figure 1 As shown, in some implementations, the frame 100 is equipped with an encoder 710, which is connected to the transmission belt 200. The encoder 710 can record the number of rotations of the transmission belt 200, thereby measuring the displacement of the first probe frame 300 and the second probe frame 400.

[0058] See also Figure 1 As shown, at least one pulley is mounted with a hand wheel 730, which can be manually rotated to rotate the pulley and drive the transmission belt 200. In some implementations, hand wheels 730 can be mounted on both pulleys.

[0059] See also Figure 4As shown, in some implementations, a locking member 720 is further mounted on the first probe frame 300. The locking member 720 is configured to lock or unlock the first probe frame 300 with the frame 100. In other words, the locking member 720 can be used to lock the first probe frame 300 with the frame 100, preventing the first probe frame 300 from moving along with the transmission belt 200. It will be appreciated that when the locking member 720 is used to lock the first probe frame 300 with the frame 100, it is preferable to adjust the first locking member 510 and the second locking member 520 so that both the first straight segment 210 and the second straight segment 220 are separated from the first probe frame 300. Specifically, the locking member 720 includes a turntable 721 and a locking screw 722 inserted into the first probe frame 300. By rotating the turntable 721, the locking screw 722 gradually contacts the frame 100, thereby locking the first probe frame 300.

[0060] See also Figure 4 and 7 As shown, in some implementations, a locking member 720 is also installed on the second probe holder 400 .

[0061] In some implementations, a magnet is embedded inside the rack 100 , which can be adsorbed on the rails by the magnet to prevent the rack 100 from moving during the flaw detection process.

[0062] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A rail flaw detection device, characterized in that: It includes: A frame, wherein two pulleys are installed on the frame; a transmission belt, the transmission belt being engaged with the two pulleys and forming a first straight segment and a second straight segment parallel to each other, wherein a driving direction of the first straight segment is opposite to a driving direction of the second straight segment; a first probe frame, wherein a first locking member and a second locking member are mounted on the first probe frame, wherein the first locking member is used to cooperate with the first straight segment, and the second locking member is used to cooperate with the second straight segment; as well as a second probe frame, wherein a third locking member and a fourth locking member are mounted on the second probe frame, wherein the third locking member is used to cooperate with the first straight segment, and the second locking member is used to cooperate with the second straight segment; The first locking member, the second locking member, the third locking member and the fourth locking member are configured to be connectable to or detachable from corresponding straight line segments.

2. The rail flaw detection device according to claim 1, characterized in that: The transmission belt is a toothed belt, and the first locking member includes an engaging portion. When the first locking member is connected to the first straight segment, the engaging portion engages with the transmission belt.

3. The rail flaw detection device according to claim 2, characterized in that: The first locking member is slidably mounted on the first probe frame, so that a connection state between the first probe frame and the first straight segment is switched by sliding the first locking member.

4. The rail flaw detection device according to claim 3, It is characterized by: A first adjustment hole is formed on the first probe frame, an adjustment screw is installed in the first adjustment hole, and the adjustment screw is threadedly connected to the first locking member; The first probe frame is provided with a first guide groove, and the first locking member is slidably mounted in the first guide groove. Screwing the adjusting screw can drive the first locking member to approach or move away from the first straight segment.

5. The rail flaw detection device according to any one of claims 1 to 4, characterized in that: The frame includes a first guide portion and a second guide portion arranged in parallel, and the first guide portion is parallel to the first straight segment; The first probe frame includes a main body, one side of the main body is slidably connected to the first guide portion, and the other side of the main body is slidably connected to the second guide portion.

6. The rail flaw detection device according to any one of claims 1 to 4, characterized in that: The first probe frame includes a main body and a connecting fork. The main body is slidably mounted on the frame. The connecting fork is rotatably connected to the main body. The connecting fork is used to be detachably connected to the ultrasonic probe.

7. The rail flaw detection device according to claim 6, characterized in that: A torsion spring is provided at the connection between the main body and the connecting fork, and the torsion spring is used to drive the connecting fork to reset.

8. The rail flaw detection device according to any one of claims 1 to 4, characterized in that: The frame is equipped with an encoder, which is connected to the transmission belt.

9. The rail flaw detection device according to any one of claims 1 to 4, characterized in that: A locking member is further installed on the first probe frame, and the locking member is configured to lock or unlock the first probe frame and the frame.

10. The rail flaw detection device according to any one of claims 1 to 4, characterized in that: Magnets are embedded in the interior of the frame.

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