Train axle end flaw detection mechanism

Abstract

The utility model provides a train axle end flaw detection mechanism, which belongs to the technical field of flaw detection mechanisms and comprises a base, tracks are fixedly arranged on the inner side and the outer side of the upper surface of the base, train wheels are arranged on the two tracks in a rolling manner, an axle is connected between the two train wheels, a driving component is mounted on the base, and a sliding groove is formed in the track on the outer side. A shaft end flaw detection assembly is slidably arranged in the sliding groove. The ultrasonic flaw detection probe is tightly attached to the outer end of the axle through the elastic force of the sleeving spring, coupling between the probe and a workpiece is guaranteed, the train wheel is driven to rotate on the track through the driving assembly, the axle drives the sliding strip on the axle end flaw detection assembly to rotate along the sliding groove through the lantern ring, and therefore the probe can conduct annular detection on the axle. And the horizontal height of the ultrasonic flaw detection probe can be adjusted through the adjusting rod, so that the probe can perform annular flaw detection on different positions of the end part of the axle, and the flaw detection comprehensiveness is ensured.

Description

Technical Field

[0001] This utility model relates to the field of flaw detection mechanism technology, and in particular to a flaw detection mechanism for the axle end of a train wheel axle. Background Technology

[0002] Axles are one of the important components that ensure the stable operation of rail vehicles. During the operation of rail vehicles, axles are subjected to frequent and alternating loads. The load on axles is also different under different operating conditions. Once damage occurs in the axle and it expands, it can lead to derailment accidents in severe cases. Therefore, axles need to be inspected when they leave the factory or during the maintenance of train axles. In the current technology, the inspection is usually carried out by hand holding an ultrasonic flaw detector, which has the problem of incomplete inspection.

[0003] For example, in the prior art, the patent with authorization announcement number CN208334277U discloses a flaw detection mechanism for the axle end of a train wheel axle. The mobility and flexibility of the axle end detection probe are greatly improved. During the detection, the axle end detection probe only needs to be pressed towards the axle end of the wheel axle to contact the axle end, and the probe will contact the axle body to perform flaw detection. It is convenient to use and works stably. During the detection, the detection error caused by operator fatigue is greatly reduced, and the detection probability is greatly improved.

[0004] However, when this device inspects the axle end of a train wheel, the probe position needs to be constantly adjusted to ensure that the probe is aligned with different positions on the axle end for flaw detection due to the size of the probe. Moreover, the adjustment process is arbitrary, which affects the comprehensiveness of the detection. Therefore, a flaw detection mechanism for the axle end of a train wheel is designed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and to propose a flaw detection mechanism for the axle end of a train wheel.

[0006] The technical problem to be solved by this utility model is to provide a flaw detection mechanism for the axle end of a train wheel, which solves the problem that in the prior art, when flaw detection mechanisms inspect the axle end of a train wheel, the position of the probe needs to be constantly adjusted to make the probe align with different positions on the axle end for flaw detection due to the influence of the probe size, and the adjustment process is arbitrary, which affects the comprehensiveness of the detection.

[0007] This utility model provides a train wheel axle end flaw detection mechanism, including a base, rails, train wheels, wheel axles, a drive assembly, and axle end flaw detection assembly. Rails are fixedly provided on both the inner and outer sides of the upper surface of the base. Train wheels are rolled on the two rails, and a wheel axle connects the two train wheels. The drive assembly is installed on the base. A groove is opened on the outer rail, and the axle end flaw detection assembly is slidably disposed in the groove.

[0008] The shaft end flaw detection assembly includes a slide bar, a rectangular sleeve, a guide sleeve, a guide rod, a collar, an adjusting rod, an adjusting bolt, a guide ring, an ultrasonic flaw detection probe, a fixing ring, and a connecting spring. The slide bar slides within a groove. A rectangular sleeve is fitted onto the slide bar. A guide sleeve is fixedly mounted above the rectangular sleeve. A collar is fixedly mounted on the top of the guide sleeve. An adjusting rod is fixedly mounted on the outer end of the upper surface of the slide bar. An adjusting bolt is threaded to the bottom of the adjusting rod and is rotatably mounted on the rectangular sleeve via a bearing. A guide ring is fixedly mounted on the top of the adjusting rod. An ultrasonic flaw detection probe is inserted through the guide ring. A fixing ring is fixedly mounted on the outer surface of the ultrasonic flaw detection probe. A connecting spring is fixedly mounted between the fixing ring and the guide ring.

[0009] Preferably, the groove is in the shape of an inverted convex character, and the inner end of the slider matches the groove, allowing the slider to slide along the groove.

[0010] Preferably, the diameter of the central through hole of the collar is not less than the diameter of the axle, and the collar can be sleeved on the axle.

[0011] Preferably, when the inner end of the ultrasonic flaw detection probe abuts against the outer end of the wheel axle, the sleeve spring is in a compressed state.

[0012] Preferably, the adjusting rod includes a rectangular sleeve, a top plate, an embedded plate, a positioning bolt, and bolt holes. The lower part of the adjusting rod is the rectangular sleeve, and the upper part is the top plate. The bottom of the top plate is fixedly provided with the embedded plate. The upper side of the rectangular sleeve is threaded with a positioning bolt. The outer surface of the embedded plate is provided with multiple bolt holes at equal intervals.

[0013] Preferably, the distance between two adjacent bolt holes is equal, and the distance between two adjacent bolt holes is equal to the diameter of the ultrasonic flaw detection probe.

[0014] Preferably, the drive assembly includes a forward and reverse motor, a lead screw, a slider, and a vertical plate. The forward and reverse motor is mounted on the center of the left side surface of the base via a mounting plate. A lead screw is installed at the output end of the forward and reverse motor. A slider is threaded onto the lead screw. Vertical plates are fixedly installed on both the left and right sides of the upper surface of the slider.

[0015] Preferably, the bottom surface of the slider is attached to the upper surface of the base.

[0016] Preferably, the top horizontal height of the vertical plate is higher than the horizontal height of the wheel axle, and the distance between the two vertical plates is greater than the diameter of the wheel axle.

[0017] Compared with the prior art, this utility model has at least the following beneficial effects:

[0018] 1. This utility model, by setting up a drive assembly and an axle end flaw detection assembly, allows for flaw detection of the wheel axle end. The train wheel and axle are hoisted onto the track, and the ultrasonic flaw detection probe is pulled outwards, compressing the spring. The probe then slides along a groove to the outer end of the axle. The collar is then pulled to align with the outer end of the axle, and the adjusting bolt is tightened to engage the collar on the axle. The ultrasonic flaw detection probe is then released, and the spring force keeps it tightly against the outer end of the axle, ensuring coupling between the probe and the workpiece. The drive assembly rotates the train wheel onto the track, and the axle, through the collar, drives the slide bar on the axle end flaw detection assembly to rotate along the groove, allowing the probe to perform a circular detection of the axle, ensuring comprehensive detection. The horizontal height of the ultrasonic flaw detection probe can be adjusted via an adjusting rod, allowing the probe to perform circular flaw detection at different positions on the axle end, ensuring comprehensive flaw detection.

[0019] 2. This utility model has an adjusting rod. When adjusting the horizontal height of the ultrasonic flaw detection probe, the depth of the embedded plate embedded in the rectangular sleeve is adjusted by loosening the positioning bolt. The positioning bolt is threaded into different bolt holes to adjust the length of the adjusting rod, thereby achieving the effect of adjusting the ultrasonic flaw detection probe to detect different positions of the wheel axle.

[0020] 3. This utility model, by providing a drive assembly, allows for flaw detection of the wheel axle end. By suspending the train wheel and axle onto the track, the train wheel rolls on the track, and the turbine axle is engaged between two vertical plates. The forward and reverse motor drives the lead screw to rotate in both directions, and the lead screw drives the slider to move left and right, thereby achieving the effect of driving the train wheel to roll left and right on the track, which facilitates flaw detection of the wheel axle. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a three-dimensional structural diagram of the shaft end flaw detection component of this utility model.

[0024] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A.

[0025] Figure 4 This is a three-dimensional structural diagram of the adjusting rod of this utility model.

[0026] Figure 5 This utility model Figure 1 Enlarged structural diagram at point B.

[0027] [Figure Labels]

[0028] 1. Base; 2. Track; 201. Slide groove; 3. Train wheel; 4. Wheel axle; 5. Forward and reverse motor; 501. Lead screw; 502. Slider; 503. Vertical plate; 6. Sliding bar; 7. Rectangular sleeve; 8. Guide sleeve; 9. Guide rod; 10. Collar; 11. Adjusting rod; 1101. Rectangular sleeve; 1102. Top plate; 1103. Embedded plate; 1104. Positioning bolt; 1105. Bolt hole; 12. Adjusting bolt; 13. Guide ring; 14. Ultrasonic flaw detector probe; 15. Fixing ring; 16. Sleeve spring. Detailed Implementation

[0029] Example:

[0030] like Figures 1-5 As shown, an embodiment of this utility model provides a train wheel axle end flaw detection mechanism, including a base 1, a track 2, a train wheel 3, a wheel axle 4, a drive assembly, and a wheel end flaw detection assembly. The upper surface of the base 1 is fixedly provided with the track 2 on both the inner and outer sides. The train wheel 3 is rolled on the two tracks 2. The wheel axle 4 is connected between the two train wheels 3. The drive assembly is installed on the base 1. A groove 201 is opened on the outer track 2. The wheel end flaw detection assembly is slidably arranged in the groove 201.

[0031] The shaft end flaw detection assembly includes a slide bar 6, a rectangular sleeve 7, a guide sleeve 8, a guide rod 9, a collar 10, an adjusting rod 11, an adjusting bolt 12, a guide ring 13, an ultrasonic flaw detection probe 14, a fixing ring 15, and a connecting spring 16. The slide bar 6 slides within the slide groove 201. A rectangular sleeve 7 is fitted onto the slide bar 6. A guide sleeve 8 is fixedly mounted above the rectangular sleeve 7. A collar 10 is fixedly mounted on the top of the guide sleeve 8. An adjusting rod 11 is fixedly mounted on the outer end of the upper surface of the slide bar 6. An adjusting bolt 12 is threadedly connected to the bottom of the adjusting rod 11, and the adjusting bolt 12 is rotatably mounted on the rectangular sleeve 7 via a bearing. A guide ring 13 is fixedly mounted on the top of the adjusting rod 11. An ultrasonic flaw detection probe 14 is inserted through the guide ring 13. A fixing ring 15 is fixedly mounted on the outer end surface of the ultrasonic flaw detection probe 14. A connecting spring 16 is fixedly mounted between the fixing ring 15 and the guide ring 13.

[0032] By incorporating a drive assembly and an axle end flaw detection assembly, when performing flaw detection on the axle end, the train wheel 3 and axle 4 are hoisted onto the track 2. The ultrasonic flaw detection probe 14 is pulled outward, compressing the sleeve spring 16. Then, the slide bar 6 is slid along the slide groove 201, moving it to the outer end of the axle 4. Next, the collar 10 is pulled to align with the outer end of the axle 4. The adjusting bolt 12 is tightened to engage the collar 10 on the axle 4. The ultrasonic flaw detection probe 14 is then released, and the sleeve spring 16... The elastic force of 6 keeps the ultrasonic flaw detection probe 14 tightly attached to the outer end of the wheel axle 4, ensuring the coupling between the probe and the workpiece. The drive assembly drives the train wheel 3 to rotate on the track 2. The wheel axle 4 drives the slide bar 6 on the axle end flaw detection assembly to rotate along the slide groove 201 through the collar 10, so that the probe can perform annular detection on the wheel axle 4, ensuring the comprehensiveness of the detection. The horizontal height of the ultrasonic flaw detection probe 14 can be adjusted by the adjusting rod 11, so that the probe can perform annular flaw detection on different positions at the end of the wheel axle 4, ensuring the comprehensiveness of the flaw detection.

[0033] In this embodiment, the slide groove 201 is in the shape of an inverted convex character, and the inner end of the slide bar 6 matches the slide groove 201. The slide bar 6 can slide along the slide groove 201 to ensure the stability of the slide bar 6 sliding in the slide groove 201.

[0034] In this embodiment, the diameter of the central through hole of the collar 10 is not less than the diameter of the wheel axle 4, and the collar 10 can be sleeved on the wheel axle 4, so that the wheel axle 4 can drive the slide bar 6 to slide along the slide groove 201 through the collar 10.

[0035] In this embodiment, when the inner end of the ultrasonic flaw detection probe 14 abuts against the outer end of the wheel axle 4, the sleeve spring 16 is in a compressed state, and the elastic force of the sleeve spring 16 makes the ultrasonic flaw detection probe 14 and the end face of the wheel axle 4 fit tightly.

[0036] In this embodiment, the adjusting rod 11 includes a rectangular sleeve 1101, a top plate 1102, an embedded plate 1103, a positioning bolt 1104, and bolt holes 1105. The lower part of the adjusting rod 11 is the rectangular sleeve 1101, and the upper part is the top plate 1102. The bottom of the top plate 1102 is fixedly provided with the embedded plate 1103. The upper side of the rectangular sleeve 1101 is threaded with the positioning bolt 1104. Multiple bolt holes 1105 are equally spaced on the outer surface of the embedded plate 1103.

[0037] In this embodiment, the distance between two adjacent bolt holes 1105 is equal, and the distance between two adjacent bolt holes 1105 is equal to the diameter of the ultrasonic flaw detector 14, ensuring the comprehensiveness of the ultrasonic flaw detector 14 during detection.

[0038] By setting an adjusting rod 11, when adjusting the horizontal height of the ultrasonic flaw detector 14, the depth of the embedded plate 1103 embedded in the rectangular sleeve 1101 is adjusted by loosening the positioning bolt 1104, and the positioning bolt 1104 is threaded into different bolt holes 1105 to achieve the effect of adjusting the length of the adjusting rod 11, thereby achieving the effect of adjusting the ultrasonic flaw detector 14 to detect different positions of the wheel axle 4.

[0039] In this embodiment, the driving assembly includes a forward and reverse motor 5, a lead screw 501, a slider 502, and a vertical plate 503. The forward and reverse motor 5 is mounted on the center of the left side surface of the base 1 via a mounting plate. The output end of the forward and reverse motor 5 is equipped with a lead screw 501, and a slider 502 is threaded onto the lead screw 501. Vertical plates 503 are fixedly installed on both the left and right sides of the upper surface of the slider 502.

[0040] In this embodiment, the bottom surface of the slider 502 is attached to the upper surface of the base 1 to prevent the lead screw 501 from driving the slider 502 to rotate.

[0041] In this embodiment, the top horizontal height of the vertical plate 503 is higher than the horizontal height of the wheel axle 4, and the distance between the two vertical plates 503 is greater than the diameter of the wheel axle 4, which makes it convenient for the wheel axle 4 to be inserted between the two vertical plates 503, and facilitates the drive assembly to drive the wheel axle 4 to move left and right.

[0042] By incorporating a drive assembly, when inspecting the axle end of a wheel, the train wheel 3 and axle 4 are hoisted onto the track 2, the train wheel 3 rolls on the track 2, and the axle 4 is inserted between two vertical plates 503. The forward and reverse motor 5 drives the lead screw 501 to rotate in both directions, and the lead screw 501 drives the slider 502 to move left and right, thereby achieving the effect of driving the train wheel 3 to roll left and right on the track 2, which facilitates the inspection of the axle 4.

[0043] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A flaw detection mechanism for the axle end of a train wheel axle, characterized in that: The device includes a base (1), a track (2), train wheels (3), axles (4), a drive assembly, and an axle end flaw detection assembly. The upper surface of the base (1) is fixedly provided with a track (2) on both the inner and outer sides. Train wheels (3) are rolled on the two tracks (2). An axle (4) is connected between the two train wheels (3). The drive assembly is installed on the base (1). A groove (201) is opened on the outer track (2). An axle end flaw detection assembly is slidably arranged in the groove (201). The shaft end flaw detection assembly includes a slide bar (6), a rectangular sleeve (7), a guide sleeve (8), a guide rod (9), a collar (10), an adjusting rod (11), an adjusting bolt (12), a guide ring (13), an ultrasonic flaw detection probe (14), a fixing ring (15), and a sleeve spring (16). The slide bar (6) slides within a slide groove (201). A rectangular sleeve (7) is fitted onto the slide bar (6). A guide sleeve (8) is fixedly installed above the rectangular sleeve (7). A collar (10) is fixedly installed at the top of the guide sleeve (8). An adjusting rod (11) is fixedly provided on the outer end of the upper surface of (6). An adjusting bolt (12) is threadedly connected to the bottom of the adjusting rod (11), and the adjusting bolt (12) is rotatably mounted on the rectangular sleeve (7) through a bearing. A guide ring (13) is fixedly provided on the top of the adjusting rod (11). An ultrasonic flaw detector (14) is provided through the guide ring (13). A fixing ring (15) is fixedly provided on the outer end surface of the ultrasonic flaw detector (14). A sleeve spring (16) is fixedly provided between the fixing ring (15) and the guide ring (13).

2. The train wheel axle end flaw detection mechanism according to claim 1, characterized in that: The groove (201) is in the shape of an inverted convex character, and the inner end of the slider (6) matches the groove (201). The slider (6) can slide along the groove (201).

3. The train wheel axle end flaw detection mechanism according to claim 2, characterized in that: The diameter of the central through hole of the collar (10) is not less than the diameter of the axle (4), and the collar (10) can be sleeved on the axle (4).

4. The train wheel axle end flaw detection mechanism according to claim 3, characterized in that: When the inner end of the ultrasonic flaw detection probe (14) abuts against the outer end of the wheel axle (4), the sleeve spring (16) is in a compressed state.

5. The train wheel axle end flaw detection mechanism according to claim 1, characterized in that: The adjusting rod (11) includes a rectangular sleeve (1101), a top plate (1102), an embedded plate (1103), a positioning bolt (1104), and bolt holes (1105). The lower part of the adjusting rod (11) is the rectangular sleeve (1101), and the upper part is the top plate (1102). The bottom of the top plate (1102) is fixedly provided with the embedded plate (1103). The upper side of the rectangular sleeve (1101) is threaded with the positioning bolt (1104). The outer surface of the embedded plate (1103) is provided with multiple bolt holes (1105) at equal intervals.

6. The train wheel axle end flaw detection mechanism according to claim 5, characterized in that: The two adjacent bolt holes (1105) are equidistant from each other, and the distance between the two adjacent bolt holes (1105) is equal to the diameter of the ultrasonic flaw detector probe (14).

7. The train wheel axle end flaw detection mechanism according to claim 1, characterized in that: The drive assembly includes a reversible motor (5), a lead screw (501), a slider (502), and a vertical plate (503). The reversible motor (5) is mounted on the center of the left side surface of the base (1) via a mounting plate. The output end of the reversible motor (5) is equipped with a lead screw (501). The slider (502) is threaded onto the lead screw (501). Vertical plates (503) are fixedly installed on both the left and right sides of the upper surface of the slider (502).

8. The train wheel axle end flaw detection mechanism according to claim 7, characterized in that: The bottom surface of the slider (502) is attached to the upper surface of the base (1).

9. The train wheel axle end flaw detection mechanism according to claim 8, characterized in that: The top horizontal height of the vertical plate (503) is higher than the horizontal height of the wheel axle (4), and the distance between the two vertical plates (503) is greater than the diameter of the wheel axle (4).

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