Track plate crack measuring device

Abstract

The utility model belongs to the technical field of railway engineering, and discloses a track plate crack measuring device, which comprises a box body with a height direction and slidably mounted on a track plate through a sliding mechanism; the ultrasonic sensor is movably installed on the box body in the height direction through a movable mechanism, the sensing end of the ultrasonic sensor is vertically downward, and the ultrasonic sensor is used for detecting the depth of the crack in the track plate. According to the utility model, the ultrasonic sensor in the box body is movably arranged on the box body along the height direction through the movable mechanism, and the sensing end of the ultrasonic sensor is vertically downward; therefore, crack depth monitoring can be carried out on the repaired track plate in the height direction, timely maintenance is facilitated, and it is ensured that the track plate is stable in structure.

Description

Technical Field

[0001] This utility model belongs to the field of railway engineering technology, specifically relating to a track slab crack measuring device. Background Technology

[0002] Currently, my country's high-speed rail network is becoming increasingly dense, and the construction of ballastless tracks for high-speed railways has yielded remarkable results. However, over time, under the combined effects of long-term train loads, external environmental erosion, and deformation of the subgrade structure, some track slabs have developed various defects such as cracks, bulging, and spalling. If these defects are ignored, the structural load-bearing capacity of the track slabs will be significantly reduced, and the geometry of the track will be disrupted, thus creating potential safety hazards for train operation. Therefore, it is essential to replace damaged track slabs promptly to quickly restore their structural strength and fully guarantee the safety and stability of high-speed railway operations.

[0003] Currently, the main repair methods for track slab cracks in my country are as follows: when the crack width is less than 0.2 mm, the surface sealing method can be used; when the crack width is greater than 0.2 mm, the grouting method is usually used. However, these methods suffer from problems such as incomplete crack repair and low efficiency.

[0004] Therefore, continuous monitoring is necessary to detect whether the cracks in the track slab have been completely repaired, and to prevent the repaired cracks from continuing to crack and deepen, thus affecting the structural stability of the track slab. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a track slab crack measuring device. It aims to use a movable mechanism to enable an ultrasonic sensor to perform depth detection of the track slab in the height direction, and a sliding mechanism to enable a camera to capture images of the track slab's width and shape. This allows for monitoring of the repaired track slab and ensures its quality.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A track slab crack measuring device, comprising,

[0008] The housing, which has a height dimension, is slidably mounted on the track plate via a sliding mechanism;

[0009] An ultrasonic sensor, which is mounted on the housing along the height direction via a movable mechanism, with its sensing end pointing vertically downwards, is used to detect the depth of cracks on the track slab.

[0010] Preferably, the housing includes an outer shell and an inner liner, with the inner liner located inside the outer shell. The movable mechanism and the ultrasonic sensor are located inside the inner liner. A channel is provided between the inner liner and the outer shell. An opening is provided at the top of the housing, and the channel is connected to the opening. Coupling agent is placed into the channel through the opening. The lower surface of the housing has an open section with a constricted structure. A leakage hole is provided on the constricted structure and is connected to the channel. This leakage hole is used to squeeze the coupling agent onto the track plate through the leakage hole, thereby achieving automatic filling of the coupling agent.

[0011] Preferably, the housing also has a width direction, and its sliding mechanism includes two slide rails and a slide plate. The two slide rails are fixed parallel to each other on the track plate, and the slide plate slides together on the two slide rails. There is a gap between the lower surface of the slide plate and the track plate. The side wall of the housing in the width direction is fixed to the slide plate, and the housing moves on the slide rails with the slide plate.

[0012] Preferably, the slide plate and the slide rail are provided with a first driving mechanism for driving the slide plate to slide on the slide rail, thereby causing the box to slide on the slide rail.

[0013] Preferably, the first drive mechanism includes a rack, a gear, and a motor. The rack is mounted on the slide rail, and the motor is inserted into the slide plate along the height direction, with its free end extending below the slide plate and fixedly sleeved with a gear. The gear meshes with the rack for transmission.

[0014] Preferably, the housing also has a length direction, and the housing has a housing chamber that extends along the height direction and is open along the lower surface of the housing. An installation assembly is slidably installed in the housing chamber, and the installation assembly extends vertically along the height direction. A transducer is installed on the lower surface of the installation assembly, and the transducer extends downward along the height direction. The ultrasonic sensor is installed on the lower surface of the transducer, and its sensing end corresponds to the track plate through the opening on the lower surface of the housing.

[0015] Preferably, a track is fixed on the side wall of the housing chamber, the track extends along the length direction, and the mounting assembly is movably mounted on the track.

[0016] Preferably, a first electric push rod is movably mounted on the side wall of the housing chamber, with its free end extending along the length direction and movably mounted on the mounting assembly.

[0017] Preferably, the sidewall of the mounting assembly is provided with rolling balls, the track has a track groove that extends along the track's own extension direction, and the rolling balls are also rolled and installed in the track groove.

[0018] Preferably, the mounting assembly includes a first fixing block extending along the height direction, and a second electric push rod mounted on its lower surface. The free end of the push rod extends along the height direction and connects to the upper surface of the transducer. There are multiple balls, some of which are rolled and embedded on two opposite outer sidewalls of the first fixing block, and others are rolled and embedded on two opposite sidewalls of the transducer. Two tracks are provided on the same sidewall of the housing chamber, and the two tracks are parallel in the height direction. The balls on the first fixing block roll on one track, and the balls on the transducer roll on the other track.

[0019] Preferably, the track corresponding to the ball connected to the transducer also has a track bend, which extends downward in the height direction and has a track positioning groove extending in its own extension direction, which is connected to the track groove.

[0020] Preferably, there are multiple track positioning slots, each located below the track along its length.

[0021] Preferably, a camera is mounted on the lower surface of the slide plate, and the camera is located within the gap and extends downward along the height direction. The camera's shooting unit corresponds to the track plate and is used to achieve global shooting within the gap, thereby capturing the width and shape of the track plate crack.

[0022] Preferably, the slide plate includes a slide plate fixing part and a slide plate lifting part. The slide plate fixing part is installed on the slide rail, and the slide plate lifting part is installed on the upper surface of the slide plate fixing part via a third electric push rod. The housing is installed on the slide plate lifting part, and the free end of the third electric push rod extends and retracts along the height direction to make the slide plate lifting part extend and retract along the height direction. This causes the housing to rise and fall with the rise and fall of the slide plate lifting part in the height direction, thereby realizing the overall lifting and lowering of all the equipment inside the housing in the height direction. This ensures that the ultrasonic sensor can fit against the surface of the track plate when detecting the crack depth. When the entire device moves with the track, it can lift the ultrasonic sensor, thereby realizing the complete detection of the entire crack.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. Because the ultrasonic sensor inside the housing in this utility model is mounted on the housing along the height direction through a movable mechanism, and its sensing end is vertically downward; thus, the depth of cracks in the track slab can be monitored along the height direction after repair, so as to carry out timely maintenance and ensure the stability of the track slab structure.

[0025] 2. Because the box in this utility model is slidably mounted on the track plate through a sliding mechanism, and a camera is also installed on the sliding mechanism composed of a sliding plate and a sliding rail, and the camera is located in the gap formed between the sliding plate and the sliding rail and extends downward along the height direction, the shooting unit of the camera corresponds to the track plate and is used to realize global shooting within the gap, thereby capturing the width and shape of the crack in the track plate. Thus, the width and shape of the crack in the track plate can be monitored along the width direction after repair, so as to carry out timely maintenance and ensure the stability of the track plate structure.

[0026] 3. Because the coupling agent can be injected into the channel through the opening in this utility model, and the coupling agent is squeezed onto the track plate through the leakage hole, the coupling agent is automatically filled, thereby replacing the manual application method, freeing up hands, improving filling efficiency, and is very convenient.

[0027] 4. In this utility model, the skateboard can be designed as a skateboard fixing part and a skateboard lifting part. The skateboard fixing part is installed on the slide rail, and the skateboard lifting part is installed on the upper surface of the skateboard fixing part through a third electric push rod. The box is installed on the skateboard lifting part, and the free end of the third electric push rod extends and retracts in the height direction, so that the skateboard lifting part extends and retracts in the height direction. This causes the box to rise and fall with the rise and fall of the skateboard lifting part in the height direction, thereby realizing the overall lifting and lowering of the equipment inside the box in the height direction. This ensures that the ultrasonic sensor can fit against the surface of the track plate when detecting the crack depth. When the entire device moves with the track, it can lift the ultrasonic sensor, thereby realizing the complete detection of the entire crack. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a cross-sectional view of the box body in this utility model;

[0030] Figure 3 This is a schematic diagram showing the cooperation relationship between the track and the slide in this utility model;

[0031] Figure 4 This is a cross-sectional view of the overall structure in another embodiment of the present invention;

[0032] Figure 5 for Figure 4 Enlarged view of the middle section;

[0033] Figure 6 for Figure 4 An enlarged view of another part;

[0034] In the diagram: 1. Box body; 101. Box chamber; 102. Outer shell; 103. Inner liner; 104. Channel; 105. Opening; 106. Leakage hole; 107. Threading hole; 2. Slide rail; 3. Ultrasonic sensor; 4. Rack; 5. Track plate; 6. Gear; 7. Motor; 8. Mounting assembly; 801. First fixing block; 802. Second electric push rod; 9. Transducer; 10. Track; 1001. First track; 1002. Second track; 10021. Bend of track; 11. First electric push rod; 12. Ball bearing; 1201. Second ball bearing; 1202. Camera; 13. Slide plate; 14. Slide plate fixing part; 1402. Slide plate lifting part; 15. Crack; 16. Third electric push rod; 17. Channel box. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following embodiments are described in detail with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0036] like Figure 1-6 As shown, a measuring device for track slab cracks includes,

[0037] The housing 1, which has a height direction, is slidably mounted on the track plate 5 via a sliding mechanism;

[0038] The ultrasonic sensor 3 (model HC-CS202) is mounted on the housing 1 along the height direction via a movable mechanism, with its sensing end facing vertically downwards, and is used to detect the depth of the crack 15 on the track slab 5.

[0039] The housing 1 includes an outer shell 102 and an inner liner 103, with the inner liner 103 located inside the outer shell 102. The moving mechanism and the ultrasonic sensor 3 are located inside the inner liner 103. A channel 104 is provided between the inner liner 103 and the outer shell 102. An opening 105 is provided on the top of the housing 1, and the channel 104 is connected to the opening 105. Coupling agent is placed into the channel 104 through the opening 105. The lower surface of the housing 1 is designed with a constricted structure, and a leakage hole 106 is provided on the constricted structure. The leakage hole 106 is connected to the channel 104 and is used to squeeze the coupling agent onto the track plate through the leakage hole to achieve automatic filling of the coupling agent.

[0040] The housing 1 also has a width direction, and its sliding mechanism includes a slide rail 2 and a slide plate 14. The slide rail 2 is fixedly installed on the track plate 5 (specifically, the slide rail 2 is fixed to the track plate 5 with strong adhesive). The slide plate 14 is slidably installed on the slide rail 2. The side wall of the housing 1 facing the width direction is fixed to the slide plate 14, and the housing 1 moves on the slide rail 2 with the slide plate 14. Specifically, there are two slide rails 2, and the two slide rails 2 are fixed parallel to each other on the track plate 5. The slide plate 14 slides together on the two slide rails 2, and there is a gap between the lower surface of the slide plate 14 and the track plate 5. The slide plate 14 and the slide rail 2 are jointly provided with a first driving mechanism for driving the slide plate 14 to slide on the slide rail 2, thereby causing the housing 1 to slide on the slide rail 2. More specifically, the first driving mechanism includes a rack 4. Gear 6 and motor 7, rack 4 are mounted on slide rail 2. Motor 7 is inserted into slide plate 14 along the height direction, and its free end extends into the bottom of slide plate 14 and is fixedly sleeved with gear 6. Gear 6 and rack 4 mesh and drive each other. The purpose is to start motor 7, and its free end starts to rotate, thereby driving gear 6 to rotate. Rack 4 is fixedly mounted on slide rail 2. Therefore, under the meshing transmission of gear 6 and rack 4, gear 6 moves on rack 4, thereby causing slide plate 14 to move on slide rail 2. The direction of movement is along the width direction. Therefore, it drives housing 1 to move along the width direction, thereby causing ultrasonic sensor 3 to move in the width direction, so that ultrasonic sensor 3 can detect the depth of crack 15 in track plate 3 in the width direction.

[0041] The housing 1 also has a length direction, and the housing 1 has a housing chamber 101, which extends along the height direction and opens along the lower surface of the housing 1. A mounting assembly 8 is slidably installed inside the housing chamber 101, and the mounting assembly 8 extends vertically along the height direction. A transducer 9 (which can be a commercially available product, such as a commercially available planar transducer, which is sandwich-type or horn-shaped) is mounted on the lower surface of the mounting assembly 8. The transducer 9 extends downward along the height direction, and the ultrasonic sensor 3 is mounted thereon. Mounted on the lower surface of transducer 9, its sensing end corresponds to the track plate 5 through the opening on the lower surface of housing 1; specifically, a track 10 is fixed on the side wall of housing chamber 101, the track 10 extends along the length direction, and the mounting assembly 8 is movably mounted on the track 10; more specifically, a first electric push rod 11 is movably mounted on the side wall of housing chamber 101, its free end extending along the length direction and movably mounted on the mounting assembly 8 (it should be noted here that the two ends of the first electric push rod 11 are respectively connected by hinges (hinges such as...) Figure 5 (As shown) connected to the mounting assembly 8 and the housing chamber 101), used to push the mounting assembly 8 to move in the length direction, ultimately causing the ultrasonic sensor 3 to move in the length direction under the action of the first electric push rod 11, thereby enabling the ultrasonic sensor 3 to detect the crack 15 of the track slab in the length direction (it should be noted that, as Figure 1 , 4 As shown, since the crack in the diagram should ideally be below the ultrasonic sensor, directly below it, and inside the track slab, rather than on its side wall, this is specifically shown here for better illustration. Figure 1 , 4 (Draw it as a dashed line in the middle) depth.

[0042] More specifically, the side wall of the mounting component 8 is provided with a rolling ball 12, the track 10 has a track groove, and the track groove extends along the extension direction of the track 10 itself, and the ball 12 is also rolled in the track groove.

[0043] Mounting assembly 8 includes a first fixing block 801, which extends along the height direction, and a second electric push rod 802 is mounted on its lower surface. The free end of the second electric push rod 802 extends along the height direction and connects to the upper surface of the transducer 9. (It should be noted that the two ends of the second electric push rod 802 are respectively connected by hinges (e.g.) Figure 6 (As shown) connected to the first fixing block 801 and the transducer 9, there are multiple balls 12, some of which are rolled and embedded on the two opposite outer side walls of the first fixing block 801, and the other part is rolled and embedded on the two opposite side walls of the transducer 9. Two tracks 10 are provided on the same side wall of the housing chamber 101 as the first track 1001 and the second track 1002. The first track 1001 and the second track 1002 are arranged parallel in the height direction. The balls on the first fixing block 801 are the first balls 1201, which roll on the first track 1001; the balls 12 on the transducer 9 are the second balls 1202, which roll on the second track 1002.

[0044] In addition, the second track 1002 also has a track bend 10021, which extends downward along the height direction and has a track positioning groove extending along its own extension direction. The track positioning groove is connected to the track groove. When the second electric push rod 802 is activated, its movable end moves downward along the height direction, so that the second ball 1202 rolls from the track groove into the track positioning groove until it stops rolling to the bottom of the track positioning groove, thereby realizing the movement of the ultrasonic sensor 3 in the height direction and the positioning after the movement.

[0045] Furthermore, there are multiple track positioning grooves, all located below the track 10 along the length direction. The purpose is to allow the ultrasonic sensor 3 to move along the length direction under the action of the first electric push rod 11, and then, pushed by the second electric push rod 802, to allow the second ball bearing 1202 to roll from the track groove into one of the track positioning grooves until it stops rolling to the bottom of the track positioning groove. This allows the ultrasonic sensor 3 to detect the depth of the crack 15 in the track plate 5 after moving along the length direction.

[0046] More specifically, there are three track positioning slots, and the distance between any two adjacent track positioning slots is set to 25mm in this embodiment.

[0047] A camera 13 is mounted on the lower surface of the slide plate 14, and the camera 13 is located in the gap and extends downward along the height direction. The shooting unit of the camera 13 corresponds to the track plate and is used to realize global shooting within the gap, thereby capturing the width and shape of the track plate crack 15.

[0048] Finally, it should be noted that both the outer casing 103 and the inner liner 104 have wire holes 107 arranged along the height direction for the wires on the transducer 9 and each electric push rod to pass through.

[0049] In addition, there is another embodiment, namely as follows: Figure 4 As shown, the skateboard 14 is designed as a skateboard fixing part 1401 and a skateboard lifting part 1402. The skateboard fixing part 1401 is mounted on the slide rail 12, and the skateboard lifting part 1402 is mounted on the upper surface of the skateboard fixing part 1401 via a third electric push rod 16. (It should be noted that the two ends of the third electric push rod 16 are respectively connected by hinges.) Figure 5 , 6 (Similarly, but not shown in the figure) is connected to the slide plate fixing part 1401 and the slide plate lifting part 1402. An iron block is also fixedly sleeved on the free end of the third electric push rod 16 (the iron block is welded to the free end of the third electric push rod). The box 1 is welded to the side wall of the iron block. The slide plate lifting part 1402 is fixed on the free end of the third electric push rod, and the free end of the third electric push rod 16 extends and retracts in the height direction, so that the iron block extends and retracts in the height direction, so that the box 1 rises and falls with the slide plate lifting part 1402 in the height direction, thereby realizing the overall lifting and lowering of the equipment in the box 1 in the height direction, so as to ensure that the ultrasonic sensor 3 can fit against the surface of the track plate 5 when detecting the crack depth. When the whole device moves with the track 12 (I-shaped rail), it can lift the ultrasonic sensor 3 and also make the slide plate lifting part 1402 extend and retract in the height direction, so that the camera 13 rises and falls in the height direction, thereby realizing the complete detection of the entire crack.

[0050] The following explanation is required for this embodiment:

[0051] 1. The main application scenario of this device is the inspection carried out after the track slab 5 has been repaired.

[0052] 2. In order to improve the measurement efficiency on the same track plate, two boxes are set on this device. Each box is equipped with an ultrasonic sensor in the manner described above, and the bottom of the ultrasonic sensor faces the track plate. Each box is fixed at both ends of the slide plate along its length.

[0053] 3. The device is also equipped with a channel box 17. Each sensor, motor, and electric push rod is connected to the channel box for communication. The channel box is also connected to an external terminal for real-time display of the measurement data of each sensor on the external terminal (specifically a computer) to realize the measurement of the depth or width of the crack 15 in the track slab 5, the ambient temperature of the track slab, and the external load (pressure) on the track slab.

[0054] 4. Two sets of parallel tracks 10 are installed on the two opposite inner side walls of the housing chamber 101. For this purpose, first balls 1201 are rolled and embedded on the two opposite outer side walls of the first fixing block 801, and each first ball 1201 rolls in the matching first track 1001. Similarly, second balls 1202 are rolled and embedded on the two opposite outer side walls of the transducer 9, and each second ball 1202 rolls in the matching second track 1002.

[0055] 5. In addition, the length direction, width direction and height direction mentioned in this application are only artificially set based on the illustration and may be different in actual work. For example, the length direction in this application is consistent with the width direction in actual work.

[0056] 6. The cabinet also features a detachable door (such as...). Figure 1 As shown in the image, the internal components can be retrieved or inspected by opening the cabinet door.

[0057] As another embodiment, the first electric actuator can be replaced with a hydraulic cylinder or a pneumatic cylinder.

[0058] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. A track slab crack measuring device, characterized in that, include, The housing, which has a height dimension, is slidably mounted on the track plate via a sliding mechanism; An ultrasonic sensor, which is mounted on the housing along the height direction via a movable mechanism, with its sensing end pointing vertically downwards, is used to detect the depth of cracks on the track slab.

2. The measuring device according to claim 1, characterized in that: The housing includes an outer shell and an inner liner, with the inner liner located inside the outer shell. The movable mechanism and ultrasonic sensor are located inside the inner liner. A channel is provided between the inner liner and the outer shell. An opening is provided at the top of the housing, and the channel is connected to the opening. Coupling agent is placed into the channel through the opening. The lower surface of the housing has an open section with a constricted structure. A leakage hole is provided on the constricted structure and is connected to the channel. This leakage hole is used to squeeze the coupling agent onto the track plate, thereby achieving automatic filling of the coupling agent.

3. The measuring device according to claim 1 or 2, characterized in that: The box also has a width direction, and its sliding mechanism includes two slide rails and a slide plate. The two slide rails are fixed parallel to each other on the track plate, and the slide plate slides together on the two slide rails. There is a gap between the lower surface of the slide plate and the track plate. The side wall of the box facing the width direction is fixed to the slide plate, and the box moves on the slide rails with the slide plate. The slide plate includes a slide plate fixing part and a slide plate lifting part. The slide plate fixing part is installed on the slide rail, and the slide plate lifting part is installed on the upper surface of the slide plate fixing part via a third electric push rod. The housing is installed on the slide plate lifting part, and the free end of the third electric push rod extends and retracts along the height direction to make the slide plate lifting part extend and retract along the height direction. This causes the housing to rise and fall with the rise and fall of the slide plate lifting part in the height direction, thereby realizing the overall lifting and lowering of all the equipment inside the housing in the height direction. This ensures that the ultrasonic sensor can fit against the surface of the track plate when detecting the crack depth. When the entire device moves with the track, it can lift the ultrasonic sensor, thereby realizing the complete detection of the entire crack.

4. The measuring device according to claim 3, characterized in that: The slide plate and the slide rail are both equipped with a first driving mechanism, which is used to drive the slide plate to slide on the slide rail, thereby causing the box to slide on the slide rail.

5. The measuring device according to claim 4, characterized in that: The enclosure also has a length direction, and the enclosure has a chamber that extends along the height direction and is open along the lower surface of the enclosure. An installation assembly is slidably installed in the chamber and extends vertically along the height direction. A transducer is installed on the lower surface of the installation assembly and extends downward along the height direction. The ultrasonic sensor is installed on the lower surface of the transducer, and its sensing end corresponds to the track plate through the opening on the lower surface of the enclosure.

6. The measuring device according to claim 5, characterized in that: A track is fixed to the side wall of the enclosure, the track extends along the length direction, and the mounting assembly is movably mounted on the track.

7. The measuring device according to claim 6, characterized in that: The mounting assembly has rolling balls embedded in its sidewalls, the track has a track groove that extends along the track's own extension direction, and the rolling balls are also rolled within the track groove.

8. The measuring device according to claim 7, characterized in that: The mounting assembly includes a first fixing block that extends along the height direction and has a second electric push rod mounted on its lower surface. The free end of the second push rod extends along the height direction and is connected to the upper surface of the transducer. The number of balls is multiple, with some of them rolling and embedded on the two opposite outer side walls of the first fixed block, and others rolling and embedded on the two opposite side walls of the transducer. Two tracks are set on the same side wall of the housing chamber, and the two tracks are parallel in the height direction. The balls on the first fixed block roll on one track, and the balls on the transducer roll on the other track.

9. The measuring device according to claim 8, characterized in that: The track corresponding to the ball connected to the transducer also has a track bend, which extends downward along the height direction and has a track positioning groove extending along its own extension direction. The track positioning groove is connected to the track groove, and there are multiple track positioning grooves, all of which are located below the track along the length direction.

10. The measuring device according to claim 3, characterized in that: A camera is installed on the lower surface of the slide plate, and the camera is located in the gap and extends downward along the height direction. The camera's shooting unit corresponds to the track plate and is used to achieve global shooting within the gap, thereby capturing the width and shape of the track plate crack.

Images