A rotary flaw detection bracket for rail bottom angle flaw detection

Abstract

The present invention provides a rotating flaw detection bracket for rail bottom angle flaw detection, comprising a hanging bracket and a fixing bracket arranged on the hanging bracket, wherein the hanging bracket can be fixedly connected to a flaw detection vehicle, the fixing bracket is located above the rail, and a probe wheel is fixed on each side of the fixing bracket via a connecting rod, and the connecting rod can be rotated on the fixing bracket to adjust the position of the probe wheel. The advantages of the present invention are that the fixing and movement of the entire flaw detection bracket are facilitated by connecting the hanging bracket to the flaw detection vehicle, the probe wheels are fixed on both sides of the fixing bracket via connecting rods, and the connecting rods can be rotated, so that the probe wheels can be rotated and pressed against the rail bottom angle during work, and after the flaw detection is completed, the probe wheels can be moved away from the rail bottom angle by rotating the connecting rod, so that they can directly follow the flaw detection vehicle along the track to the next weld position, and can quickly move between different flaw detection positions without the need for manual handling, thereby improving work efficiency and reducing labor intensity.

Description

Technical Field

[0001] The present invention relates to the technical field of rail flaw detection, in particular to a rotary flaw detection bracket used for rail bottom angle flaw detection. Background Art

[0002] As trains continue to speed up, the requirements for the integrity of rails are getting higher and higher, which requires rail welding. The quality of rail welding directly affects the safety of railway operations.

[0003] At present, the conventional inspection method commonly used is to detect flaws from the upper surface of the rail. This method cannot detect the quality of the welds at the bottom angle of the rail, but it has certain limitations in rail weld inspection. The welds at the bottom angle of the rail are inspected manually, that is, the inspector takes a handheld flaw detector, squats down and uses a handheld probe to inspect, which is time-consuming and labor-intensive. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a rail bottom angle flaw detection bracket that can follow the flaw detection vehicle to move on the rail, thereby realizing a certain degree of mechanized flaw detection of the welds at the bottom angles of the rail, reducing the labor intensity of the flaw detector and improving the flaw detection efficiency.

[0005] The present invention solves the above technical problems through the following technical solutions: a rotary flaw detection bracket for rail bottom angle flaw detection, comprising a hanging bracket and a fixing bracket arranged on the hanging bracket, the hanging bracket can be fixedly connected to the flaw detection vehicle, the fixing bracket is located above the rail, and a detection wheel is fixed on both sides of the fixing bracket through a connecting rod, and the connecting rod can rotate on the fixing bracket to adjust the position of the detection wheel.

[0006] The present invention is connected to the flaw detection vehicle through a hanging bracket. When working, the movement of the flaw detection vehicle drives the movement of the entire flaw detection bracket. The detection wheels are fixed on both sides of the fixing bracket by connecting rods, and the connecting rods can be rotated, so that the detection wheel can be rotated and pressed on the bottom angle of the rail during work. After the flaw detection is completed, the detection wheel is moved away from the bottom angle of the rail by rotating the connecting rod, so that it can directly follow the flaw detection vehicle to move along the track to the next weld position. It can quickly move between different flaw detection positions, improve work efficiency, and reduce labor intensity.

[0007] Preferably, when the connecting rod rotates away from the bottom angle of the rail, the detection wheels on both sides move outwards away from the rail.

[0008] Preferably, the connecting rods are respectively fixed at both ends of the rotating shaft, and the connecting rods can rotate along with the rotating shaft.

[0009] Preferably, the connecting rod is sleeved on the rotating shaft, and the connecting rod is connected to the rotating shaft through a pin shaft perpendicular to the length direction. The connecting rod can rotate around the pin shaft. A guide plate is also provided on the outside of the rotating shaft, and a spiral limiting groove is provided on the guide plate. The connecting rod slides with the limiting groove through the guide shaft.

[0010] Preferably, the upper end of the connecting rod is coaxially connected to a guide shaft, and the guide shaft is inserted into the limit groove. The total length of the limit groove is approximately 1 / 4 of an arc. Starting from the top of the arc, the limit groove is spirally arranged toward the side close to the rail.

[0011] Preferably, a rotating motor is provided on the fixing frame, the rotating motor is in transmission cooperation with a driving gear, the driving gear is meshed with a driven gear, and the driven gear is coaxially fixed with the rotating shaft.

[0012] Preferably, the bracket includes two parallel mounting plates, a bracket that can be connected to the flaw detection vehicle is fixed on the mounting plate on the side close to the flaw detection vehicle and is cantilevered outward, the mounting plates on both sides are connected by a retaining rod, and wheel axles fixedly connected to the mounting plates on both sides are respectively provided at both ends of the bracket, and the wheel axles are provided with running wheels that can run along the surface of the rail.

[0013] Preferably, a limit plate is provided on the side of the traveling wheel close to the hanging plate, and a tightening spring abutting against the limit plate is sleeved on the wheel axle, and the limit plate can abut against the inner side surface of the rail.

[0014] Preferably, the wheel axle is further provided with a fixing block abutting against the limiting plate, the fixing block is freely sleeved on the wheel axle, and both ends of the fixing frame are respectively fixedly connected to the fixing block.

[0015] Preferably, at least one optical axis connected to the mounting plates on both sides is provided between the wheel axles at both ends, and the fixing frame is slidably sleeved on the optical axis.

[0016] The advantages of the rotary flaw detection bracket for rail bottom angle flaw detection provided by the present invention are as follows: the connection with the flaw detection vehicle through the hanging bracket facilitates the fixing and movement of the entire flaw detection bracket, the detection wheel is fixed by connecting rods on both sides of the fixing bracket, and the connecting rods can rotate, which is convenient for rotating the detection wheel to press on the rail bottom angle during work. After the flaw detection is completed, the detection wheel is moved away from the rail bottom angle by rotating the connecting rod, so that it can directly follow the flaw detection vehicle to move along the track to the next weld position, and can quickly move between different flaw detection positions, thereby improving work efficiency and reducing labor intensity. During the rotation process, the detection wheel gradually moves away from the rail, so that the detection wheel can rotate above the rail, which is convenient for passing through the switch section and removing the flaw detection bracket. The rotation of the rotating shaft is driven by the rotating motor, which facilitates the synchronous control of the detection wheels on both sides; by arranging a tightening spring on the wheel axle, it is ensured that the fixing bracket can be above the rail, thereby improving the flaw detection effect. The flaw detection bracket is fixed by the hanging plate, which is convenient for coordinating and fixing with the flaw detection vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the cooperation between a rotary flaw detection bracket and a rail for flaw detection at the bottom corner of a rail provided by an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of the matching state of the connecting rod and the rotating shaft of the rotary flaw detection bracket for rail bottom angle flaw detection provided by an embodiment of the present invention;

[0019] Figure 3 A schematic diagram of a rotary flaw detection bracket for rail bottom angle flaw detection provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the following describes the technical solutions of the present invention clearly and completely with reference to specific embodiments and the accompanying drawings. It is obvious that the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1 As shown, this embodiment provides a rotating flaw detection bracket for rail bottom angle flaw detection, including a hanger 1 and a fixed frame 2 arranged on the hanger 1, the hanger 1 can be fixedly connected to the flaw detection vehicle, the fixed frame 2 is above the rail 3, and a detection wheel 41 is fixed on both sides of the fixed frame 2 through a connecting rod 4, and the connecting rod 4 can rotate on the fixed frame 2 to adjust the position of the detection wheel 41.

[0022] This embodiment is connected to the flaw detection vehicle through the hanging bracket 1. When working, the movement of the flaw detection vehicle drives the movement of the flaw detection bracket. The detection wheel 41 is fixed on both sides of the fixing frame 2 by the connecting rod 4, and the connecting rod 4 can be rotated, so that the detection wheel 41 can be rotated and pressed on the rail bottom angle 31 during work. After the flaw detection is completed, the detection wheel 41 is separated from the rail bottom 31 by rotating the connecting rod 4, so that it can directly follow the flaw detection vehicle along the track to the next weld position. It can move quickly between different flaw detection positions without manual handling, thereby improving work efficiency and reducing labor intensity.

[0023] Furthermore, when the connecting rod 4 rotates away from the bottom angle of the rail 31, the detection wheels 41 on both sides move outward away from the rail 3, so that they can leave the rail 3 from both sides of the rail surface in the middle of the rail 3, and the detection wheels 41 are lifted to a sufficient height to avoid obstacles on both sides of the rail during movement.

[0024] refer to Figure 2 The connecting rods 4 on both sides are respectively fixed at the two ends of the rotating shaft 21, and the connecting rods 4 rotate with the rotating shaft 21. Specifically, the connecting rod 4 is sleeved on the outside of the rotating shaft 21, and the connecting rod 4 is fixedly connected to the rotating shaft 21 through a pin 42. The connecting rod 4 can rotate around the pin 42. A guide plate 22 is provided on the outside of the rotating shaft 21, and a spiral limiting groove 23 is provided on the guide plate 22. The connecting rod 4 slides with the limiting groove 23. When the rotating shaft 21 rotates, it drives the connecting rod 4 to rotate. At the same time, the connecting rod 4 rotates relative to the pin 42 according to the guidance of the limiting groove 23, so that the detection wheel 41 fixed on the connecting rod 4 can rotate around the pin 42 while rotating with the rotating shaft 21, so that the detection wheel 41 moves away from the rail 3.

[0025] Specifically, the upper end of the connecting rod 4 is coaxially connected to a guide shaft 43, and the guide shaft 43 is inserted into the limit groove 23. The total length of the limit groove 23 is approximately 1 / 4 arc. The specific value of the length of the limit groove 23 here is not strictly limited, as long as it can allow the probe wheel 41 to move above the rail 3 to facilitate passing through the switch section. 1 / 4 arc is a more common setting. Starting from the top of the arc, the limit groove 23 is spirally set toward the side close to the rail 3, so that the guide shaft 43 gradually moves closer to the rail 3, and the probe wheel 41 at the other end moves gradually away from the rail 3.

[0026] Combine Figure 1 and Figure 3A rotating motor 24 is provided on the fixed frame 2, and the rotating motor 24 is in transmission cooperation with a driving gear 25, and the driving gear 25 is meshed with a driven gear 26. The driven gear 26 is coaxial with the rotating shaft 21 and fixed on the rotating shaft 21, so that the rotating shaft 21 can be driven to rotate by the rotating motor 24. In this embodiment, the output direction of the rotating motor 24 is perpendicular to the rotating shaft 21 to reduce the lateral space requirement. The rotating motor 24 and the driving gear 25 can achieve adjustment of the output direction through structures such as a worm gear.

[0027] Specifically, the fixing frame 2 includes two parallel fixing plates 27 and a plurality of fixing rods and / or connecting plates (not shown) located between the fixing plates 27 to connect the fixing plates 27 on both sides. The rotating motor 24, the driving gear 25 and the driven gear 26 are all located between the fixing plates 27 on both sides. The guide plate 22 is fixed to the fixing plates 27 on both sides, so that the fixing frame 2 can be directly mounted on the bracket 1 as a whole.

[0028] The bracket 1 includes two parallel mounting plates 11. A hanging plate 12 that can be connected to the flaw detection vehicle is fixed to the outside of the mounting plate 11 close to the flaw detection vehicle. The hanging plate 12 can be connected to the flaw detection vehicle by bolts or snaps. There are at least two retaining rods 13 on both sides of the mounting plate 11 to further fix the mounting plate. The retaining rod 13 is located in the middle position above the mounting plate 11. Wheel axles (not shown) fixedly connected to the mounting plates 11 on both sides are respectively provided at both ends of the bracket 1. The wheel axles are provided with running wheels 5 that can run along the surface of the rail 3.

[0029] A limit plate 51 is provided on the side of the traveling wheel 5 close to the hanging plate 12, and a tensioning spring 14 is sleeved on the wheel axle and abuts against the limit plate 51. The limit plate 51 can abut against the inner side of the rail 3. When passing through a curve or other section where the track gauge changes, the tensioning spring 14 can tighten the traveling wheel 5 so that it always abuts against the side of the rail 3, so that the hanger 1 always remains on the rail 3.

[0030] refer to Figure 1 , the wheel axle is also provided with a fixing block 15 abutting against the limit plate 51, the fixing block 15 is freely sleeved on the wheel axle, and the two ends of the fixing frame 2 are respectively fixedly connected to the fixing block 15. Specifically, the two ends of the fixing plate 27 on one side of the fixing frame 2 are respectively connected to the fixing block 15 by bolts, so that the fixing frame 2 can follow the walking wheel 5 to adjust its position on the wheel axle, so that the fixing frame 2 always remains above the rail 3. In order to improve the stability of the fixing frame 2, at least one optical axis 16 connected to the mounting plates 11 on both sides is further provided between the wheel axles at both ends, and the fixing plate 27 is slidably set on the optical axis 16.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A rotary flaw detection bracket for rail bottom angle flaw detection, characterized by: The wheelbase is shortened and the shifting position is adjusted accordingly. The train movement is adapted to move the train movement in a direction of rotation relative to the track, with the train movement moving upwards to adjust the train movement. The train movement is adapted to move the train movement in a direction of rotation relative to the track.

2. The rotary flaw detection bracket for rail bottom angle flaw detection according to claim 1, characterized in that: When the connecting rod rotates away from the bottom corner of the rail, the detection wheels on both sides move outwards away from the rail.

3. The rotary flaw detection bracket for rail bottom angle flaw detection according to claim 1, characterized in that: A rotating motor is provided on the fixing frame. The rotating motor is in transmission cooperation with a driving gear. The driving gear is meshed with a driven gear. The driven gear is coaxially fixed with the rotating shaft.

4. The rotary flaw detection bracket for rail bottom angle flaw detection according to claim 1, characterized in that: The hanging bracket includes two parallel mounting plates, a hanging plate that can be connected to the flaw detection vehicle is fixedly extended outward from the mounting plate on the side close to the flaw detection vehicle, and the mounting plates on both sides are connected by a retaining rod. Wheel axles fixedly connected to the mounting plates on both sides are respectively provided at both ends of the hanging bracket, and the wheel axles are provided with running wheels that can run along the surface of the rail.

5. The rotary flaw detection bracket for rail bottom angle flaw detection according to claim 4, characterized in that: A limit plate is provided on one side of the traveling wheel close to the hanging plate, and a tightening spring abutting against the limit plate is sleeved on the wheel axle, and the limit plate can abut against the inner side surface of the rail.

6. The rotary flaw detection bracket for rail bottom angle flaw detection according to claim 5, characterized in that: The wheel axle is further provided with a fixing block which abuts against the limiting plate. The fixing block is freely sleeved on the wheel axle, and both ends of the fixing frame are respectively fixedly connected to the fixing block.

7. The rotary flaw detection bracket for rail bottom angle flaw detection according to claim 6, characterized in that: At least one optical axis connected to the mounting plates on both sides is provided between the wheel axles at both ends, and the fixing frame is slidably sleeved on the optical axis.

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