Hollow axle ultrasonic flaw detector with portable probe limiting structure

Abstract

The utility model discloses a hollow axle ultrasonic flaw detector with a portable probe limiting structure, which comprises a portable box, a probe rod, a limiting structure, an ultrasonic flaw detector, a track and a hollow axle, the limiting structure comprises a limiting ring and an explosion head, one end face of the limiting ring is provided with the explosion head, and the other end face of the limiting ring is provided with the ultrasonic flaw detector. A threaded sleeve is installed on the outer ring wall of the explosion head in a threaded mode, one end of the hollow axle is inserted into the explosion head, a rotating ring is rotatably installed on the inner ring wall of the limiting ring, a protruding block is installed on the inner wall of a channel of the rotating ring, a rail is arranged on the outer wall of the probe rod, and the protruding block is in sliding connection with the rail. The probe rod enters the hollow axle through the limiting structure, so that the probe rod is prevented from shaking when moving back and forth, and the problem that when a worker holds the probe rod by hand to carry the probe into the hollow axle for detection, the probe is easily driven to shake due to the lack of the limiting structure because the hand is not stable enough is solved; and the detection accuracy of the ultrasonic flaw detector for the hollow axle is improved.

Description

Technical Field

[0001] The utility model relates to the field of ultrasonic flaw detectors, in particular to a portable hollow axle ultrasonic flaw detector with a probe limiting structure. Background Technique

[0002] All types of vehicles in China's EMUs have reached the maintenance mileage to varying degrees. To ensure the safe operation of EMUs, it is necessary to use hollow axle ultrasonic flaw detection equipment to perform ultrasonic flaw detection on the hollow axles of EMUs. The hollow axle ultrasonic flaw detection equipment is divided into two types: manual detection and automatic flaw detection. The portable hollow axle ultrasonic flaw detector belongs to the manual detection instrument, which is a beneficial supplement to the hollow axle ultrasonic flaw detector using the automatic flaw detection method. When using the hollow axle ultrasonic flaw detector to detect cracks and other defects in the axle, it is necessary to use the portable hollow axle ultrasonic flaw detector to manually complete the accurate quantification and other verification and determination of the judged defects.

[0003] The following deficiencies will occur when the existing device is in use: When using the hollow axle ultrasonic flaw detector, the staff holds the probe rod and carries the probe into the hollow axle for detection. Since the human hand is not stable enough and lacks a limiting structure, it is easy to drive the probe to shake, affecting the detection accuracy. Content of the Utility Model

[0004] The purpose of the utility model is to provide a portable hollow axle ultrasonic flaw detector with a probe limiting structure to solve the problems raised in the above background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: a hollow axle ultrasonic flaw detector with a portable probe limiting structure, which includes a portable box, a probe rod, a limiting structure, an ultrasonic flaw detection instrument, a track and a hollow axle. The limiting structure includes a limiting ring and an explosive head. An explosive head is installed on one end face of the limiting ring. A threaded sleeve is threadedly installed on the outer wall of the explosive head. One end of the hollow axle is inserted into the explosive head. A rotating ring is rotatably installed on the inner wall of the limiting ring. A convex block is installed on the inner wall of the channel of the rotating ring. A track is provided on the outer wall of the probe rod. The convex block is slidably connected with the track. When detecting the hollow axle, open the portable box and take out the limiting structure. Rotate the threaded sleeve threadedly installed on the outer wall of the explosive head to open the explosive head. Then insert one end of the hollow axle into the explosive head. Then rotate the threaded sleeve in the reverse direction. Due to the trapezoidal design of the explosive head, the threaded sleeve will squeeze the explosive head to clamp and fix the outer wall of the explosive head and the hollow axle. After installing the limiting structure on one end of the hollow axle, take out the probe rod for threaded connection to align the tracks on multiple probe rods front and back. After connecting with the ultrasonic flaw detection instrument through the connecting wire, insert one end of the probe rod with a probe into the limiting ring to make the track provided on the outer wall of the probe rod slidably connected with the convex block installed on the inner wall of the channel of the rotating ring. The probe rod enters the hollow axle through the limiting structure, avoiding the shaking of the probe rod when moving back and forth. When the probe rod rotates in a circle, it drives the rotating ring to rotate on the inner wall of the limiting ring. With the sliding connection of the slider and the chute, the stability of the probe rod when rotating in a circle is ensured, avoiding the problem that the probe is easily shaken due to the lack of a limiting structure and the instability of the human hand when the staff holds the probe rod with a probe and enters the hollow axle for detection, improving the detection accuracy of the hollow axle ultrasonic flaw detector.

[0006] In a further embodiment, the portable box contains a probe rod, a limiting structure, a connecting wire and an ultrasonic flaw detection instrument. Universal wheels are installed on the portable box. A pull rod is installed on the portable box. Through the universal wheels and the pull rod installed on the portable box, it is convenient to move the hollow axle ultrasonic flaw detector to the use site, improving the portability of the hollow axle ultrasonic flaw detector.

[0007] In a further embodiment, a chute is provided on the limiting ring. A slider is installed on the rotating ring. The slider is slidably connected with the chute. When the probe rod rotates in a circle, it drives the rotating ring to rotate on the inner wall of the limiting ring. With the sliding connection of the slider and the chute, the stability of the probe rod when rotating in a circle is ensured.

[0008] In a further embodiment, the explosive head is designed as a trapezoid. Threads are provided on the outer wall of the explosive head. The threaded sleeve sleeved on the outer wall of the explosive head is threadedly connected with the explosive head. Rotate the threaded sleeve forward and backward to move it back and forth on the explosive head. Because the explosive head is trapezoidally designed, the explosive head will open and tighten as the threaded sleeve moves back and forth, clamping and fixing the outer wall of the explosive head and the hollow axle.

[0009] In a further embodiment, four groups of the probe rods are provided. The four groups of probe rods are connected by threads. A probe head is installed at one end of one of the probe rods. Take out multiple groups of probe rods for threaded connection to align the tracks on the multiple groups of probe rods front and back, and insert one end of the probe rod with the probe head into the limiting ring.

[0010] In a further embodiment, the probe rod is inserted into the hollow axle.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The probe rod enters the hollow axle through the limiting structure, avoiding the shaking when the probe rod moves back and forth. When a staff member holds the probe rod with the probe head to enter the hollow axle for detection, due to the lack of stability of the human hand and the lack of a limiting structure, it is easy to drive the probe head to shake. This improves the detection accuracy of the ultrasonic flaw detector for the hollow axle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the limiting structure of the present utility model;

[0013] Figure 2 It is a schematic diagram of the internal structure of the portable flaw detector of the present utility model;

[0014] Figure 3 It is a front view schematic diagram of the limiting structure of the present utility model;

[0015] Figure 4 It is an enlarged schematic diagram of the limiting structure of the present utility model.

[0016] In the figure: 1. Portable box; 2. Universal wheel; 3. Pull rod; 4. Probe rod; 5. Limiting structure; 6. Connecting wire; 7. Ultrasonic flaw detection instrument; 8. Track; 9. Convex block; 10. Rotating ring; 11. Slide block; 12. Chute; 13. Limiting ring; 14. Hollow axle; 15. Explosion head; 16. Threaded sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0018] Please refer to Figures 1-4, an embodiment provided by the present utility model: a portable probe limiting structure for an ultrasonic flaw detector of a hollow axle, comprising a portable box 1, a probe rod 4, a limiting structure 5, an ultrasonic flaw detection instrument 7, a track 8, and a hollow axle 14. The limiting structure 5 includes a limiting ring 13 and an explosive head 15. An explosive head 15 is installed on one end face of the limiting ring 13. A threaded sleeve 16 is threadedly installed on the outer wall of the explosive head 15. One end of the hollow axle 14 is inserted into the explosive head 15. A rotating ring 10 is rotatably installed on the inner wall of the limiting ring 13. A convex block 9 is installed on the inner wall of the channel of the rotating ring 10. A track 8 is provided on the outer wall of the probe rod 4. The convex block 9 is slidably connected to the track 8. When detecting the hollow axle 14, open the portable box 1 and take out the limiting structure 5. Rotate the threaded sleeve 16 threadedly installed on the outer wall of the explosive head 15 to open the explosive head 15. Then insert one end of the hollow axle 14 into the explosive head 15. Then rotate the threaded sleeve 16 in the reverse direction. Due to the trapezoidal design of the explosive head 15, the threaded sleeve 16 will squeeze the explosive head 15 to clamp and fix the outer wall of the explosive head 15 and the hollow axle 14. After installing the limiting structure 5 on one end of the hollow axle 14, take out the probe rod 4 for threaded connection to align the tracks 8 on multiple probe rods 4 front and back. After connecting with the ultrasonic flaw detection instrument 7 through the connecting wire 6, insert one end of the probe rod 4 equipped with a probe into the limiting ring 13 to make the track 8 provided on the outer wall of the probe rod 4 slidably connected to the convex block 9 installed on the inner wall of the channel of the rotating ring 10. The probe rod 4 enters the hollow axle 14 through the limiting structure 5, avoiding the shaking of the probe rod 4 when moving back and forth. When the probe rod 4 makes a circular rotation, it drives the rotating ring 10 to rotate on the inner wall of the limiting ring 13. With the sliding connection of the slider 11 and the chute 12, it ensures the stability of the probe rod 4 during circular rotation, avoiding the problem that when a staff member holds the probe rod with a probe and enters the hollow axle for detection, due to the lack of stability of the human hand and the lack of a limiting structure, it is easy to drive the probe to shake, improving the detection accuracy of the ultrasonic flaw detector for the hollow axle. The circuit modules and ultrasonic flaw detection equipment components involved in this application are all existing mature technologies, and there are many market products. The protection content of this application does not involve the improvement of ultrasonic flaw detection equipment components and detection methods, so no detailed description is made here.

[0019] Please refer to Figures 1-4, a probe rod 4, a limiting structure 5, a connecting wire 6, and an ultrasonic flaw detector 7 are placed in the portable case 1. Universal wheels 2 are installed on the portable case 1, and a pull rod 3 is installed on the portable case 1. Through the universal wheels 2 and the pull rod 3 installed on the portable case 1, it is convenient to move the hollow axle ultrasonic flaw detector to the use site, improving the portability of the hollow axle ultrasonic flaw detector. A chute 12 is provided on the limiting ring 13, and a slider 11 is installed on the rotating ring 10. The slider 11 is slidably connected to the chute 12. When the probe rod 4 makes a circular rotation, it drives the rotating ring 10 to rotate on the inner wall of the limiting ring 13. With the sliding connection between the slider 11 and the chute 12, the stability of the probe rod 4 during circular rotation is ensured.

[0020] Please refer to Figures 1-4 , the explosive head 15 is designed as a trapezoid. Threads are provided on the outer wall of the explosive head 15. A threaded sleeve 16 sleeved on the outer wall of the explosive head 15 is threadedly connected to the explosive head 15. By rotating the threaded sleeve 16 forward and backward, it moves back and forth on the explosive head 15. Because the explosive head 15 is trapezoidally designed, the explosive head 15 will open and tighten as the threaded sleeve 16 moves back and forth, clamping and fixing the outer wall of the explosive head 15 to the hollow axle 14. Four groups of probe rods 4 are provided. The four groups of probe rods 4 are threadedly connected. A probe is installed at one end of one of the probe rods 4 in the four groups of probe rods 4. Take out multiple groups of probe rods 4 for threaded connection to align the tracks 8 on the multiple groups of probe rods 4 back and forth. Insert the end of the probe rod 4 with the probe into the limiting ring 13. The probe rod 4 is inserted into the hollow axle 14.

[0021] Working principle: Through the universal wheels 2 and the pull rod 3 installed on the portable box 1, it is convenient to move the ultrasonic flaw detector for hollow axles to the use site. When detecting the hollow axle 14, open the portable box 1 and take out the limiting structure 5. Rotate the threaded sleeve 16 threadedly installed on the outer wall of the explosion head 15 to open the explosion head 15. Then insert one end of the hollow axle 14 into the explosion head 15, and then rotate the threaded sleeve 16 in the reverse direction. Due to the trapezoidal design of the explosion head 15, the threaded sleeve 16 will squeeze the explosion head 15 to clamp and fix the outer wall of the explosion head 15 and the hollow axle 14. After installing the limiting structure 5 on one end of the hollow axle 14, take out the probe rod 4 for threaded connection to align the tracks 8 on multiple probe rods 4 front and back. After connecting with the ultrasonic flaw detection instrument 7 through the connection line 6, insert one end of the probe rod 4 equipped with a probe into the limiting ring 13, and make the track 8 opened on the outer wall of the probe rod 4 slidably connected with the convex block 9 installed on the inner wall of the channel of the rotating ring 10. The probe rod 4 enters the hollow axle 14 through the limiting structure 5, avoiding the shaking of the probe rod 4 when moving back and forth. When the probe rod 4 rotates in a circle, it drives the rotating ring 10 to rotate on the inner wall of the limiting ring 13. With the sliding connection between the slider 11 and the sliding groove 12, it ensures the stability of the probe rod 4 when rotating in a circle, avoiding the problem that when the staff holds the probe rod and carries the probe into the hollow axle for detection, it is easy to drive the probe to shake due to the lack of stability of the human hand and the lack of a limiting structure, and improving the detection accuracy of the ultrasonic flaw detector for hollow axles.

[0022] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A hollow axle ultrasonic flaw detector with a portable probe limiting structure, comprising a portable box (1), a probe rod (4), a limiting structure (5), an ultrasonic flaw detection instrument (7), a track (8) and a hollow axle (14), characterized in that: The limiting structure (5) includes a limiting ring (13) and an explosive head (15). An explosive head (15) is installed on one end face of the limiting ring (13). A threaded sleeve (16) is installed on the outer wall of the explosive head (15) by threading. One end of the hollow axle (14) is inserted into the explosive head (15). A rotating ring (10) is rotatably installed on the inner wall of the limiting ring (13). A convex block (9) is installed on the inner wall of the channel of the rotating ring (10). A track (8) is provided on the outer wall of the probe rod (4). The convex block (9) is slidably connected to the track (8).

2. The hollow axle ultrasonic flaw detector with a portable probe limiting structure according to claim 1, characterized in that: The portable box (1) contains a probe rod (4), a limiting structure (5), a connecting wire (6) and an ultrasonic flaw detector (7). Universal wheels (2) are installed on the portable box (1). A pull rod (3) is installed on the portable box (1).

3. The hollow axle ultrasonic flaw detector with a portable probe limiting structure according to claim 1, characterized in that: A sliding groove (12) is provided on the limiting ring (13). A sliding block (11) is installed on the rotating ring (10). The sliding block (11) is slidably connected to the sliding groove (12).

4. The hollow axle ultrasonic flaw detector with a portable probe limiting structure according to claim 1, wherein: The explosive head (15) is designed in a trapezoid shape, and threads are provided on the outer wall of the explosive head (15).

5. The hollow axle ultrasonic flaw detector with a portable probe limiting structure according to claim 1, characterized in that: Four groups of probe rods (4) are provided. The four groups of probe rods (4) are connected by threading. A probe is installed on one end of one of the probe rods (4).

6. The hollow axle ultrasonic flaw detector with a portable probe limiting structure according to claim 1, characterized in that: The probe rod (4) is inserted into the hollow axle (14).

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