Rail flaw detector probe frame with freely adjustable probe angle

Abstract

The utility model belongs to rail nondestructive flaw detection technical field, disclose a kind of rail flaw detector probe frame of freely adjustable probe angle, including probe frame body, probe inner ring, probe outer ring and probe;The top of probe frame body is fixed with rail flaw detector, the bottom of probe frame body is fixedly installed probe outer ring;Probe inner ring can be rotatably installed in the inside of probe outer ring;Probe is fixedly installed in the inside of probe inner ring.The utility model provides a kind of rail flaw detector probe frame of freely adjustable probe angle, and probe inner ring is rotated by the tightness of flat end top screw, the adjustment of probe angle can be realized, on the one hand, can reduce the labor intensity of flaw detection staff, improve work efficiency;On the other hand, can guarantee to detect all damage inside rail, guarantee railway transportation safety.

Description

Technical Field

[0001] This utility model relates to the field of non-destructive testing technology for rails, specifically to a probe holder for a rail flaw detector with an adjustable probe angle. Background Technology

[0002] As a vital national infrastructure, the safe operation of railways is directly related to the safety of people's lives and property and socio-economic development. During long-term service, steel rails are prone to defects such as cracks and abrasions due to factors such as train loads and environmental corrosion. If these defects are not detected and repaired in a timely manner, they may lead to major accidents such as derailments. Traditional hand-operated monorail flaw detectors are the core equipment for detecting rail defects. Their probes are distributed on the rail tread and identify internal and surface defects by emitting and receiving ultrasonic waves.

[0003] The probe angle (i.e., its position along the width of the rail head) is a key factor affecting the effectiveness of rail defect detection. Probes with different angles are used to measure damage at different locations and angles inside the rail. In traditional rail flaw detectors, the probe and probe ring are fixedly connected. The probe ring has three mounting holes at different positions around its circumference, and the side plate of the probe holder is fastened to the mounting holes at different positions on the probe ring with bolts. Therefore, in order to avoid missing defects inside the rail, every week, the flaw detection personnel need to disassemble the probe ring with the probe fixed on it, adjust the angle of the probe ring with the probe fixed on it, and then reassemble the probe ring and the side plate of the probe holder to adjust the probe angle; after the probe angle is adjusted, the rail is re-inspected.

[0004] The aforementioned rail flaw detection method has the following problems: Flaw detection personnel disassemble the probe ring with the fixed probe every week, change to a new angle, and re-scan the rail. The probe ring and the side plate of the probe holder typically require at least two bolts to be fastened circumferentially. Therefore, the disassembly and installation of the probe ring with the fixed probe are cumbersome, requiring at least two bolts to be removed from the mounting hole and screwed into another mounting hole. Furthermore, the probe ring with the fixed probe is quite heavy; therefore, adjusting its direction not only increases the burden on workers but also seriously affects work efficiency. Therefore, designing a probe holder with freely adjustable probe angle can not only reduce the burden on flaw detection personnel but also improve flaw detection efficiency, which is of significant practical importance for ensuring railway transportation safety. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a rail flaw detector probe holder with freely adjustable probe angle, which can effectively solve the above problems.

[0006] The technical solution adopted in this utility model is as follows:

[0007] This utility model provides a rail flaw detector probe frame with freely adjustable probe angle, including a probe frame body, an inner probe ring (6), an outer probe ring (7), and a probe (8).

[0008] The top of the probe frame body is fixed to the rail flaw detector, and the probe outer ring (7) is fixedly installed at the bottom of the probe frame body; the probe inner ring (6) is rotatably installed inside the probe outer ring (7); the probe (8) is fixedly installed inside the probe inner ring (6).

[0009] Furthermore, the inner ring (6) of the probe is embedded inside the outer ring (7) of the probe and is rotatable relative to the outer ring (7); between the inner ring (6) of the probe and the outer ring (7) of the probe, a locking component and three sets of positioning buffer elastic components are distributed along the circumferential direction.

[0010] Furthermore, the fastening component is an M6 flat-end set screw (701); a first threaded hole is opened in the first thickened area of ​​the outer ring (7) of the probe; after one end of the M6 ​​flat-end set screw (701) is threaded through the first threaded hole, it abuts against the outer wall of the inner ring (6) of the probe.

[0011] Furthermore, each set of the positioning buffer elastic components includes a beaded set screw (705) and an M3 flat-end set screw (706).

[0012] A horizontal second threaded hole and a vertical third threaded hole are opened in the second thickened area of ​​the outer ring (7) of the probe; the bottom of the third threaded hole communicates with the inside of the second threaded hole; after the ball set screw (705) is screwed through the second threaded hole, the steel ball of the ball set screw (705) abuts against the outer wall of the inner ring (6) of the probe; after the bottom thread of the M3 flat end set screw (706) is screwed through the third threaded hole, it abuts against the top of the ball set screw (705).

[0013] Furthermore, on the outer wall of the inner ring (6) of the probe, a set of vertical positioning grooves is provided corresponding to the positions of the fastening assembly and the three sets of positioning buffer elastic assemblies; each set of vertical positioning grooves includes several spaced vertical positioning grooves (603); the vertical positioning grooves (603) match the ends of the M6 ​​flat-end set screws (701) and the ends of the bead set screws (705).

[0014] Furthermore, each set of the positioning vertical groove group includes four positioning vertical grooves (603), corresponding to probe angles of 14°, 16.8°, 18°, and 20° respectively.

[0015] Furthermore, the inner ring (6) of the probe and the probe (8) are fastened together by the probe set screw (601) and the first nut (602).

[0016] Furthermore, the probe holder body includes a probe holder hook (1), an adjusting screw (2), a slider (3), a probe holder side plate (4), a rotating shaft (401), and a guide shaft (5).

[0017] The probe frame hook (1) is fixedly installed at the corresponding position of the rail flaw detector; the adjusting screw (2) is rotatably installed inside the probe frame hook (1) and the guide shaft (5) is fixedly installed; the guide shaft (5) is arranged parallel to the adjusting screw (2); the slider (3) is sleeved on the outside of the adjusting screw (2); the lower part of the slider (3) is sleeved on the outside of the guide shaft (5) and can slide along the guide shaft (5); the lower part of the slider (3) is hinged to the probe frame side plate (4) through the rotating shaft (401); the end of the probe frame side plate (4) and the probe outer ring (7) are fixed.

[0018] Furthermore, a torsion spring (402) is fitted onto the surface of the rotating shaft (401), and the end of the torsion spring (402) abuts against the surface of the slider (3).

[0019] Furthermore, the end of the probe holder side plate (4) and the probe outer ring (7) are connected and fixed together by bolts (702), nylon washers (703) and a second nut (704).

[0020] The rail flaw detector probe holder with freely adjustable probe angle provided by this utility model has the following advantages:

[0021] This utility model provides a rail flaw detector probe holder with freely adjustable probe angle. The probe angle can be adjusted by rotating the inner ring of the probe through the tightening and loosening of the flat-end set screw. On the one hand, it can reduce the labor intensity of flaw detection personnel and improve work efficiency; on the other hand, it can ensure that all internal damage to the rail is detected, thus ensuring the safety of railway transportation. Attached Figure Description

[0022] Figure 1 This is a perspective view of the rail flaw detector probe frame with freely adjustable probe angle according to this utility model.

[0023] Figure 2 This is a front view of the rail flaw detector probe holder with freely adjustable probe angle according to this utility model.

[0024] Figure 3 This is a side view of the probe holder of the rail flaw detector with freely adjustable probe angle according to this utility model;

[0025] Figure 4 This is a top view of the rail flaw detector probe frame with freely adjustable probe angle according to this utility model;

[0026] Figure 5 This is an exploded view of the probe frame of the rail flaw detector with freely adjustable probe angle according to this utility model.

[0027] Figure 6 This is a cross-sectional view of the probe frame of the rail flaw detector with freely adjustable probe angle according to this utility model.

[0028] Wherein: 1-Probe holder hook; 2-Adjusting screw; 3-Slider; 4-Probe holder side plate; 401-Rotating shaft; 402-Torsion spring; 5-Guide shaft; 6-Probe inner ring; 601-Probe set screw; 602-First nut; 603-Positioning vertical groove; 7-Probe outer ring; 701-M6 flat-end set screw; 702-Bolt; 703-Nylon washer; 704-Second nut; 705-Ball set screw; 706-M3 flat-end set screw; 8-Probe. Detailed Implementation

[0029] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0030] See Figures 1 to 6 This utility model provides a rail flaw detector probe frame with freely adjustable probe angle, including a probe frame body, an inner probe ring 6, an outer probe ring 7, and a probe 8;

[0031] The top of the probe frame body is fixed to the rail flaw detector, and the probe outer ring 7 is fixedly installed at the bottom of the probe frame body; the probe inner ring 6 is rotatably installed inside the probe outer ring 7; the probe 8 is fixedly installed inside the probe inner ring 6.

[0032] Therefore, when it is necessary to adjust the angle of probe 8, the position of the outer ring 7 of the probe remains unchanged, and only the inner ring 6 of the probe needs to be rotated. When the inner ring 6 of the probe rotates, it drives the probe 8 to rotate together, so as to easily adjust the angle of probe 8.

[0033] In this invention, a rotatable inner probe ring is set inside the outer probe ring, and the probe and the inner probe ring are fixed. The probe angle is adjusted by rotating the inner probe ring, which eliminates the need to move the entire probe ring and probe for angle adjustment as in the prior art. Therefore, this application can facilitate the adjustment of the probe angle, reduce the workload of flaw detection personnel, and improve the efficiency of probe angle adjustment.

[0034] In one specific implementation, the inner ring 6 of the probe is embedded inside the outer ring 7 of the probe and is rotatable relative to the outer ring 7 of the probe; between the inner ring 6 and the outer ring 7 of the probe, a locking component and three sets of positioning buffer elastic components are distributed along the circumferential direction.

[0035] like Figure 6 As shown, the fastening component is an M6 flat-end set screw 701; a first threaded hole is opened in the first thickened area of ​​the outer ring 7 of the probe; after one end of the M6 ​​flat-end set screw 701 is threaded through the first threaded hole, it abuts against the outer wall of the inner ring 6 of the probe, thereby fixing the inner ring 6 of the probe and the outer ring 7 of the probe.

[0036] Each set of the positioning buffer elastic components includes a ball-type set screw 705 and an M3 flat-end set screw 706; a horizontal second threaded hole and a vertical third threaded hole are formed in the second thickened area of ​​the outer ring 7 of the probe; the bottom of the third threaded hole communicates with the inside of the second threaded hole; after the ball-type set screw 705 is threaded through the second threaded hole, the steel ball of the ball-type set screw 705 abuts against the outer wall of the inner ring 6 of the probe; after the bottom thread of the M3 flat-end set screw 706 is threaded through the third threaded hole, it abuts against the top of the ball-type set screw 705, and the M3 flat-end set screw 706 is used for axial positioning of the ball-type set screw 705. The ball-type set screw 705 is a fastener with a spring and a steel ball, which achieves elastic positioning by utilizing the built-in spring and steel ball.

[0037] Furthermore, to improve the accuracy of probe angle adjustment and meet the general requirements for probe angle adjustment, a set of vertical positioning grooves is provided on the outer wall of the inner ring 6 of the probe, corresponding to the positions of the locking assembly and the three sets of positioning buffer elastic components. Each set of vertical positioning grooves includes several spaced vertical positioning grooves 603. The vertical positioning grooves 603 match the ends of the M6 ​​flat-end set screws 701 and the ends of the ball set screws 705. In practical applications, each set of vertical positioning grooves includes four vertical positioning grooves 603, corresponding to probe angles of 14°, 16.8°, 18°, and 20°, respectively.

[0038] In this invention, the inner ring 6 of the probe and the probe 8 are fastened together by the probe set screw 601 and the first nut 602.

[0039] In this utility model, the probe frame body includes a probe frame hook 1, an adjusting screw 2, a slider 3, a probe frame side plate 4, a rotating shaft 401, and a guide shaft 5;

[0040] The probe holder hook 1 is fixedly installed at the corresponding position of the rail flaw detector, for example, on the two side flaps and the bottom of the frame of the rail flaw detector. The adjusting screw 2 is rotatably installed inside the probe holder hook 1, and the guide shaft 5 is fixedly installed. The guide shaft 5 is a long optical axis and is arranged parallel to the adjusting screw 2. The slider 3 is sleeved on the outside of the adjusting screw 2. The lower part of the slider 3 is sleeved on the outside of the guide shaft 5 and can slide along the guide shaft 5. The lower part of the slider 3 is hinged to the probe holder side plate 4 via the rotating shaft 401. The end of the probe holder side plate 4 is fixed to the probe outer ring 7. When the adjusting screw 2 is manually rotated, the entire probe holder body moves the probe 8 left and right. The guide shaft 5 is used to enhance the stability of the slider 3 moving along the adjusting screw 2.

[0041] In one specific implementation, the inner ring 6 of the probe is fixed to the probe 8 by a probe set screw 601 and a first nut 602. The inner ring 6 of the probe is embedded in the outer ring 7 of the probe and is fastened by an M6 flat-end set screw 701; one end of the ball set screw 705 is inserted into the positioning vertical groove 603 of the inner ring 6 of the probe, and the other end is fixed in the outer ring 7 of the probe by an M3 flat-end set screw 706.

[0042] The method of use is as follows: When it is necessary to adjust the angle of probe 8, use an Allen wrench to loosen the M6 ​​flat end set screw 701. The inner ring 6 of the probe can then rotate within the outer ring 7 of the probe. After rotating to the required angle, the ball set screw 705 will re-engage in the new positioning vertical groove 603. At this time, the probe 8 will be adjusted to the new angle simultaneously. Then tighten the M6 ​​flat end set screw 701.

[0043] This utility model provides a rail flaw detector probe holder with freely adjustable probe angle. By adjusting the tension of the inner ring of the probe with the flat-end set screw, the probe angle can be freely adjusted, eliminating the need for flaw detection personnel to repeatedly disassemble the probe. On the one hand, this reduces the labor intensity of flaw detection personnel and improves work efficiency; on the other hand, it ensures that all internal damage to the rail is detected, thus guaranteeing railway transportation safety.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A probe holder for a rail flaw detector with an adjustable probe angle, characterized in that, It includes the probe holder body, the inner ring of the probe (6), the outer ring of the probe (7), and the probe (8); The top of the probe frame body is fixed to the rail flaw detector, and the probe outer ring (7) is fixedly installed at the bottom of the probe frame body; the probe inner ring (6) is rotatably installed inside the probe outer ring (7); the probe (8) is fixedly installed inside the probe inner ring (6).

2. The rail flaw detector probe holder with freely adjustable probe angle according to claim 1, characterized in that, The inner ring (6) of the probe is embedded inside the outer ring (7) of the probe and can rotate relative to the outer ring (7); between the inner ring (6) and the outer ring (7) of the probe, there are fastening components and three sets of positioning buffer elastic components distributed along the circumferential direction.

3. The rail flaw detector probe holder with freely adjustable probe angle according to claim 2, characterized in that, The fastening component is an M6 flat-end set screw (701); a first threaded hole is opened in the first thickened area of ​​the outer ring (7) of the probe; after one end of the M6 ​​flat-end set screw (701) is threaded through the first threaded hole, it abuts against the outer wall of the inner ring (6) of the probe.

4. The rail flaw detector probe holder with freely adjustable probe angle according to claim 3, characterized in that, Each set of positioning buffer elastic components includes a ball-shaped set screw (705) and an M3 flat-end set screw (706). A horizontal second threaded hole and a vertical third threaded hole are opened in the second thickened area of ​​the outer ring (7) of the probe; the bottom of the third threaded hole communicates with the hole of the second threaded hole; after the ball set screw (705) is screwed through the second threaded hole, the steel ball of the ball set screw (705) abuts against the outer wall of the inner ring (6) of the probe; after the bottom thread of the M3 flat end set screw (706) is screwed through the third threaded hole, it abuts against the top of the ball set screw (705).

5. A rail flaw detector probe holder with freely adjustable probe angle according to claim 4, characterized in that, On the outer wall of the inner ring (6) of the probe, a set of vertical positioning grooves is provided corresponding to the positions of the fastening component and the three sets of positioning buffer elastic components. Each set of vertical positioning grooves includes several spaced vertical positioning grooves (603). The vertical positioning grooves (603) match the ends of the M6 ​​flat-end set screws (701) and the ends of the bead set screws (705).

6. A rail flaw detector probe holder with freely adjustable probe angle according to claim 5, characterized in that, Each group of positioning vertical grooves includes four positioning vertical grooves (603), corresponding to probe angles of 14°, 16.8°, 18°, and 20° respectively.

7. A rail flaw detector probe holder with freely adjustable probe angle according to claim 1, characterized in that, The probe inner ring (6) and the probe (8) are fastened together by the probe set screw (601) and the first nut (602).

8. A rail flaw detector probe holder with freely adjustable probe angle according to claim 1, characterized in that, The probe frame body includes a probe frame hook (1), an adjusting screw (2), a slider (3), a probe frame side plate (4), a rotating shaft (401), and a guide shaft (5). The probe frame hook (1) is fixedly installed at the corresponding position of the rail flaw detector; the adjusting screw (2) is rotatably installed inside the probe frame hook (1) and the guide shaft (5) is fixedly installed; the guide shaft (5) is arranged parallel to the adjusting screw (2); the slider (3) is sleeved on the outside of the adjusting screw (2); the lower part of the slider (3) is sleeved on the outside of the guide shaft (5) and can slide along the guide shaft (5); the lower part of the slider (3) is hinged to the probe frame side plate (4) through the rotating shaft (401); the end of the probe frame side plate (4) and the probe outer ring (7) are fixed.

9. A rail flaw detector probe holder with freely adjustable probe angle according to claim 8, characterized in that, A torsion spring (402) is fitted on the surface of the rotating shaft (401), and the end of the torsion spring (402) abuts against the surface of the slider (3).

10. A rail flaw detector probe holder with freely adjustable probe angle according to claim 8, characterized in that, The end of the probe holder side plate (4) and the probe outer ring (7) are connected and fixed together by bolts (702), nylon washers (703) and a second nut (704).

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