Subway wheel tread scar detection equipment

Abstract

The utility model discloses subway wheel tread scar detection equipment, which relates to the technical field of scar detection and comprises a detector main body, a protective cover, a telescopic probe and a digital display screen are arranged on the detector main body, and a probe connecting line connected with the telescopic probe is further arranged on the rear end face of the detector main body. The rear end of the detector main body is provided with a handheld part, the handheld part comprises an inner cylinder connected with the detector main body, the probe connecting line is arranged in the inner cylinder in a penetrating manner, the inner cylinder is slidably provided with a sliding ring, the sliding ring is provided with a positioning piece used for fixing the probe connecting line, the inner cylinder is internally provided with a buffer spring, and the buffer spring is connected with the probe connecting line. The other end of the buffer spring is connected with the side wall of the sliding ring, and the part, located in the handheld part, of the probe connecting line is bent. According to the utility model, poor contact caused by pulling is effectively reduced, the loss or error of detection data is avoided, and the safety of subway operation is further improved.

Description

Technical Field

[0001] This utility model relates to the field of scratch detection technology, specifically a device for detecting scratches on subway wheel treads. Background Technology

[0002] In urban rail transit systems, subways, with their efficiency and convenience, have become a vital pillar of urban transportation, and their safe operation is fundamental to ensuring public travel. The condition of subway wheel treads is closely related to train safety. Enduring the immense pressure of train operation, the friction from frequent braking, and the impact of track conditions over long periods, subway wheel treads are highly susceptible to wear, cracks, and peeling. If these defects are not detected and addressed promptly, minor problems can gradually escalate into serious malfunctions, posing a significant threat to train safety.

[0003] Currently, handheld subway wheel tread inspection devices are widely used in routine maintenance. These devices use probes to contact the wheel tread and collect data to determine if there are any scratches. However, in actual operation, this device has revealed a serious problem: the wiring harness connecting the probes often faces numerous challenges. The subway vehicle maintenance environment is complex and space is limited. When using handheld inspection devices, maintenance personnel need to frequently adjust the device's position and angle to comprehensively inspect all parts of the wheel tread. During this process, the probe wiring harness is inevitably subjected to pulling in various directions.

[0004] Because the probe harness is frequently subjected to pulling, the connection between the probe harness and the probe is prone to loosening, resulting in poor contact. Once poor contact occurs, the testing equipment cannot stably and accurately acquire wheel tread data, thus affecting the reliability of the test results.

[0005] In view of the above, this application is hereby submitted. Utility Model Content

[0006] The purpose of this invention is to provide a subway wheel tread scratch detection device to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides a subway wheel tread scratch detection device, including a detection instrument body. The detection instrument body is provided with a protective cover, a telescopic probe and a digital display screen. A probe connection line connected to the telescopic probe is also provided on the rear end face of the detection instrument body. A handheld part is provided at the rear end of the detection instrument body. The handheld part includes an inner cylinder connected to the detection instrument body. The probe connection line passes through the inside of the inner cylinder, and a sliding ring is slidably installed on the inner cylinder. The sliding ring is provided with a positioning component for fixing the probe connection line. A buffer spring is installed inside the inner cylinder. The other end of the buffer spring is connected to the side wall of the sliding ring. A portion of the probe connection line inside the handheld part is curved.

[0008] Furthermore, the positioning element includes a plurality of slide rods disposed on the sliding ring and capable of sliding radially along the sliding ring. One end of the slide rod extending to the inner ring of the sliding ring is connected to a pressure plate. One end of the sliding ring extending to the outside of the inner cylinder is connected to a threaded ring. An outer cylinder is threadedly connected to the threaded ring. One end of the inner wall of the outer cylinder is provided with an inclined surface. One end of the slide rod extending to the outer ring of the sliding ring abuts against the inclined surface.

[0009] Furthermore, the sliding ring has a mounting groove extending radially inside it, and the sliding rod is slidably connected inside the mounting groove.

[0010] Furthermore, a connecting plate is installed on the outer wall of the sliding rod inside the mounting groove. A return spring is connected to one side of the connecting plate. The return spring is sleeved on the outside of the sliding rod, and the end of the return spring away from the connecting plate is connected to the inner wall of the mounting groove. Under the initial elastic force of the return spring, the sliding rod is given a force to increase the sliding force towards the inclined plane.

[0011] Furthermore, the outer cylinder is sleeved on the outer wall of the inner cylinder and can slide along the axial direction of the inner cylinder, and the outer wall of the outer cylinder is integrally formed with anti-slip texture.

[0012] Furthermore, a groove is provided on the outer wall of the inner cylinder, and the sliding ring is slidably connected to the inside of the groove. The portion of the sliding ring extending through the groove to the outside of the inner cylinder is connected to the threaded ring.

[0013] Furthermore, the outer wall of the threaded ring is provided with an external thread, and the inner wall of the outer cylinder is provided with an internal thread that matches the external thread.

[0014] Furthermore, an inner retaining ring is installed inside the inner cylinder, and the end of the buffer spring away from the sliding ring is connected to the buffer spring. An opening is provided on the buffer spring for the probe connection wire to pass through.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention effectively reduces poor contact caused by pulling by using the buffering effect of the buffer spring and the bent part of the probe connection line, avoiding the loss or error of detection data, providing a guarantee for accurately judging the damage to the tread of subway wheels, and thus improving the safety of subway operation.

[0017] In terms of ease of operation, the anti-slip texture on the outer wall of the outer cylinder and the convenient fixing and loosening functions achieved by the coordinated action of various components make it easy for maintenance personnel to adjust the equipment in the complex subway maintenance environment, simplifying the operation process and improving work efficiency. At the same time, the reliability of the positioning component in fixing the probe connection line ensures that the equipment can maintain a good working condition under frequent use and complex external forces, extending the service life of the equipment and reducing maintenance costs. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the sliding ring in this utility model.

[0022] In the diagram: 1. Main body of the detector; 2. Protective cover; 3. Telescopic probe; 4. Digital display screen; 5. Handheld part; 51. Inner cylinder; 52. Slide groove; 53. Sliding ring; 54. Outer cylinder; 55. Inner retaining ring; 56. Buffer spring; 57. Threaded ring; 58. Inclined surface; 59. Slide rod; 510. Pressure plate; 511. Connecting plate; 512. Return spring; 6. Probe connecting wire. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4This utility model provides a technical solution: a subway wheel tread scratch detection device, including a detector body 1, a protective cover 2, a telescopic probe 3 and a digital display screen 4 on the detector body 1, a probe connecting line 6 connected to the telescopic probe 3 on the rear end face of the detector body 1, a handheld part 5 at the rear end of the detector body 1, the handheld part 5 including an inner cylinder 51 connected to the detector body 1, the probe connecting line 6 passing through the inside of the inner cylinder 51, and a sliding ring 53 slidably installed on the inner cylinder 51, the sliding ring 53 being provided with a positioning component for fixing the probe connecting line 6, a buffer spring 56 installed inside the inner cylinder 51, the other end of the buffer spring 56 being connected to the side wall of the sliding ring 53, and a portion of the probe connecting line 6 located inside the handheld part 5 being curved.

[0025] Specifically, a handheld part 5 is located at the rear end of the main body 1 of the detector. An inner cylinder 51 is connected to the main body 1 of the detector, and the probe connecting wire 6 passes through it. A sliding ring 53 can slide on the inner cylinder 51. When the probe connecting wire 6 is pulled, the sliding ring 53 slides along the inner cylinder 51 under the action of tension, compressing the buffer spring 56. Since the part of the probe connecting wire 6 located inside the handheld part 5 is curved, the curved part can be appropriately extended during the sliding of the sliding ring 53, thereby relieving the pulling force. The positioning component can fix the probe connecting wire 6 and prevent it from shaking randomly. The design of the handheld part 5, especially the synergistic effect of the inner cylinder 51, the sliding ring 53, the buffer spring 56, and the curved part of the probe connecting wire 6, can effectively buffer the pulling force on the probe connecting wire 6, reduce poor contact caused by pulling, and improve the stability and reliability of data acquisition of the detection equipment. At the same time, the handheld part 5 is convenient for maintenance personnel to hold, improving the operating experience.

[0026] See Figure 2 , Figure 3 and Figure 4 The positioning element includes a plurality of slide rods 59 disposed on the sliding ring 53 and capable of sliding radially along the sliding ring 53. One end of the slide rod 59 extending to the inner ring of the sliding ring 53 is connected to a pressure plate 510. One end of the sliding ring 53 extending to the outside of the inner cylinder 51 is connected to a threaded ring 57. An outer cylinder 54 is threadedly connected to the threaded ring 57. One end of the inner wall of the outer cylinder 54 is provided with an inclined surface 58. One end of the slide rod 59 extending to the outer ring of the sliding ring 53 abuts against the inclined surface 58.

[0027] Specifically, when the outer cylinder 54 is rotated, it moves axially due to its threaded connection with the threaded ring 57. The inclined surface 58 on the inner wall of one end of the outer cylinder 54 pushes the slide rod 59 to slide radially along the sliding ring 53. The pressure plate 510 connected to one end of the slide rod 59 moves closer to and presses against the probe connecting line 6, thereby fixing the probe connecting line 6. When the outer cylinder 54 is rotated in the opposite direction, the thrust of the inclined surface 58 on the slide rod 59 decreases. Under the action of the return spring 512, the slide rod 59 drives the pressure plate 510 away from the probe connecting line 6, and the fixation can be loosened. This positioning component structure achieves convenient fixing and loosening of the probe connecting line 6 through a simple threaded connection and the cooperation of the inclined surface 58. It is convenient for maintenance personnel to adjust the position of the probe connecting line 6 according to actual needs, and the fixing effect is good. It can prevent the connecting line from shaking or shifting during use, further ensuring the stability of the connection.

[0028] See Figure 3 The sliding ring 53 has a mounting groove extending radially inside it, and the slide rod 59 is slidably connected inside the mounting groove.

[0029] Specifically, the mounting slot ensures the stability and accuracy of the movement of the slide bar 59, thereby improving the reliability of the positioning component in fixing the probe connection line 6 and enhancing the stability of the entire device in complex operating environments.

[0030] See Figure 3 A connecting plate 511 is installed on the outer wall of the slide rod 59 inside the mounting groove. A return spring 512 is connected to one side of the connecting plate 511. The return spring 512 is sleeved on the outside of the slide rod 59, and the end of the return spring 512 away from the connecting plate 511 is connected to the inner wall of the mounting groove. Under the initial elastic force of the return spring 512, the slide rod 59 is increased to slide towards the inclined plane 58.

[0031] Specifically, the reset spring 512 enables the slide bar 59 to automatically reset after the inclined plane 58 loses its thrust, eliminating the need for manual adjustment, simplifying the operation process, and improving the convenience and efficiency of equipment use.

[0032] See Figure 1 The outer cylinder 54 is fitted onto the outer wall of the inner cylinder 51 and can slide along the axial direction of the inner cylinder 51. The outer wall of the outer cylinder 54 is integrally formed with anti-slip texture.

[0033] Specifically, the sliding design of the outer cylinder 54 makes it convenient for maintenance personnel to adjust the positioning parts, while the anti-slip texture improves the stability during operation, prevents the outer cylinder 54 from slipping in the hand, and enhances the convenience and reliability of the equipment.

[0034] See Figure 1 and Figure 2A groove 52 is provided on the outer wall of the inner cylinder 51. A sliding ring 53 is slidably connected to the inside of the groove 52. The part of the sliding ring 53 that extends through the groove 52 to the outside of the inner cylinder 51 is connected to the threaded ring 57.

[0035] Specifically, the slide groove 52 is formed on the outer wall of the inner cylinder 51, and the sliding ring 53 slides in the slide groove 52, which restricts the movement trajectory of the sliding ring 53, so that it can only slide along the axial direction of the inner cylinder 51. At the same time, the sliding ring 53 passes through the slide groove 52 and is connected to the threaded ring 57, ensuring that the outer cylinder 54 can drive the sliding ring 53 and the positioning component to work normally when rotating. The setting of the slide groove 52 precisely controls the sliding direction of the sliding ring 53, ensuring the accuracy and stability of the coordinated work of various components of the equipment, and enhancing the buffering effect of the equipment when dealing with the pulling of the probe connection line 6.

[0036] See Figure 2 The outer wall of the threaded ring 57 is provided with an external thread, and the inner wall of the outer cylinder 54 is provided with an internal thread that matches the external thread.

[0037] Specifically, the external thread on the outer wall of the threaded ring 57 and the internal thread on the inner wall of the outer cylinder 54 cooperate with each other. When the outer cylinder 54 is rotated, the outer cylinder 54 moves axially using the thread transmission principle, thereby controlling the positioning component. The threaded connection method provides stable and precise transmission, accurately adjusting the fixing force of the positioning component on the probe connection line 6 to ensure reliable fixing effect. It also facilitates operation by maintenance personnel and improves the ease of use of the equipment.

[0038] See Figure 2 An inner retaining ring 55 is installed inside the inner cylinder 51. The end of the buffer spring 56 away from the sliding ring 53 is connected to the buffer spring 56. An opening is provided on the buffer spring 56 for the probe connecting wire 6 to pass through.

[0039] Specifically, the inner retaining ring 55 provides a stable support point for the buffer spring 56, ensuring that the buffer spring 56 can effectively buffer the tensile force on the probe connecting wire 6, extend the service life of the equipment, and improve the reliability of the testing equipment.

[0040] Working principle: The inner cylinder 51 serves as the basic frame of the handheld part 5, connecting the main body 1 of the detector. The probe connecting wire 6 passes through it, providing it with initial protective space. The sliding ring 53 can slide axially on the inner cylinder 51. When the probe connecting wire 6 is subjected to external pulling force, the pulling force is transmitted to the sliding ring 53, causing it to slide within the groove 52 of the inner cylinder 51, thereby compressing the buffer spring 56. Since the probe connecting wire 6 is curved within the handheld part 5, the curved part can extend during the sliding process of the sliding ring 53, thus initially relieving the pulling force. In terms of positioning, the outer cylinder 54, threaded ring 57, slide rod 59, pressure plate 510, and return spring 512 work together. By rotating the outer cylinder 54, the threaded connection between the outer cylinder 54 and the threaded ring 57 causes the outer cylinder 54 to move axially. The inclined surface 58 on the inner wall of one end of the outer cylinder 54 pushes the slide rod 59 to slide radially along the sliding ring 53, which drives the pressure plate 510 to press or loosen the probe connecting line 6, thereby fixing or adjusting its position. The return spring 512 ensures that the slide rod 59 can automatically return to its original position after the inclined surface 58 loses its thrust.

[0041] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A subway wheel tread scratch detection device, comprising a detection instrument body (1), wherein the detection instrument body (1) is provided with a protective cover (2), a telescopic probe (3) and a digital display screen (4), and a probe connection line (6) connected to the telescopic probe (3) is also provided on the rear end face of the detection instrument body (1), characterized in that: The rear end of the main body (1) of the detector is provided with a handheld part (5). The handheld part (5) includes an inner cylinder (51) connected to the main body (1) of the detector. The probe connecting line (6) passes through the inside of the inner cylinder (51). A sliding ring (53) is slidably installed on the inner cylinder (51). A positioning element for fixing the probe connecting line (6) is provided on the sliding ring (53). A buffer spring (56) is installed inside the inner cylinder (51). The other end of the buffer spring (56) is connected to the side wall of the sliding ring (53). A portion of the probe connecting line (6) inside the handheld part (5) is curved.

2. The subway wheel tread scratch detection device as described in claim 1, characterized in that: The positioning element includes a plurality of slide rods (59) disposed on the sliding ring (53) and capable of sliding radially along the sliding ring (53). One end of the slide rod (59) extending to the inner ring of the sliding ring (53) is connected to a pressure plate (510). One end of the sliding ring (53) extending to the outside of the inner cylinder (51) is connected to a threaded ring (57). An outer cylinder (54) is threadedly connected to the threaded ring (57). One end of the inner wall of the outer cylinder (54) is provided with a slope (58). One end of the slide rod (59) extending to the outer ring of the sliding ring (53) abuts against the slope (58).

3. The subway wheel tread scratch detection device as described in claim 2, characterized in that: The sliding ring (53) has a mounting groove extending radially inside it, and the slide rod (59) is slidably connected to the inside of the mounting groove.

4. The subway wheel tread scratch detection device as described in claim 3, characterized in that: The slide rod (59) is mounted on the outer wall inside the mounting groove with a connecting plate (511). A return spring (512) is connected to one side of the connecting plate (511). The return spring (512) is sleeved on the outside of the slide rod (59), and the end of the return spring (512) away from the connecting plate (511) is connected to the inner wall of the mounting groove. Under the initial elastic force of the return spring (512), the slide rod (59) is increased to slide towards the inclined plane (58).

5. The subway wheel tread scratch detection device as described in claim 2, characterized in that: The outer cylinder (54) is sleeved on the outer wall of the inner cylinder (51) and can slide along the axial direction of the inner cylinder (51). The outer wall of the outer cylinder (54) is integrally formed with anti-slip texture.

6. The subway wheel tread scratch detection device as described in claim 5, characterized in that: A groove (52) is provided on the outer wall of the inner cylinder (51). The sliding ring (53) is slidably connected to the inside of the groove (52). The portion of the sliding ring (53) extending through the groove (52) to the outside of the inner cylinder (51) is connected to the threaded ring (57).

7. The subway wheel tread scratch detection device as described in claim 6, characterized in that: The outer wall of the threaded ring (57) is provided with an external thread, and the inner wall of the outer cylinder (54) is provided with an internal thread that matches the external thread.

8. The subway wheel tread scratch detection device as described in claim 1, characterized in that: An inner retaining ring (55) is installed inside the inner cylinder (51). The end of the buffer spring (56) away from the sliding ring (53) is connected to the buffer spring (56). An opening is provided on the buffer spring (56) for the probe connecting wire (6) to pass through.

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