Railway bridge crack detection device

Abstract

The utility model relates to crack detection technical field, specifically disclose a railway bridge crack detection device, including detection main part, and detection main part includes box, and the box inside fixed support plate, is installed with ultrasonic crack detector and electric telescopic link on support plate, and the lower extreme of electric telescopic link is connected with mounting bracket, and the fixed detection probe of mounting bracket is set up with the through -hole corresponding with detection probe in the bottom of box, and the protection mechanism that protects and cleans detection probe in the process of moving up and down on detection probe is arranged in the box. Through the setting of protection mechanism in the box, when electric telescopic link elongation pushes mounting bracket and detection probe to move down, mounting bracket passes through connecting rod to push the sliding of baffle under the limit of slide rail, makes baffle open the through -hole at the bottom of box, and simultaneously, the cleaning assembly connected on mounting bracket cleans the bottom of detection probe, protects and cleans detection probe, guarantees the use effect of detection.

Description

Technical Field

[0001] This utility model relates to the field of crack detection technology, and in particular to a crack detection device for railway bridges. Background Technology

[0002] An existing railway bridge crack detection device, with publication number CN 217766237 U, uses casters to move the main body of the device, facilitating crack detection at different locations on the railway bridge. During movement, it encounters bumpy sections; springs and dampers absorb vibrations to prevent damage to internal components. A handrail allows the user to control the direction of the device. Pushing the handrail causes the casters to roll, facilitating movement. Once in the desired position, an electric push rod is activated, which in turn raises and lowers a transmission rod, which in turn raises and lowers a fixed plate, which in turn raises and lowers the detection probe. However, in this device, the detection probe is located outside the main body. During movement and use, the probe may collide with other parts, potentially damaging it and affecting its performance. Utility Model Content

[0003] The purpose of this invention is to provide a railway bridge crack detection device in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A railway bridge crack detection device includes a detection body, which comprises a box-shaped enclosure. A support plate is fixed inside the box-shaped enclosure, and an ultrasonic crack detector and an electric telescopic rod are mounted on the support plate. A mounting frame is connected to the lower end of the electric telescopic rod, and a detection probe is fixed on the mounting frame. Damping shock absorbers are installed at the four corners of the lower end of the box-shaped enclosure, and movable wheels are fixed to the lower ends of the damping shock absorbers. A through hole corresponding to the detection probe is provided at the bottom of the box-shaped enclosure. A protective mechanism is provided inside the box-shaped enclosure to protect and clean the detection probe during its vertical movement. The protective mechanism includes a shielding component, and cleaning components are provided on both sides of the shielding component. The shielding component includes a slide rail fixed parallel to the bottom of the inner side of the box-shaped enclosure, and two shielding plates are arranged opposite each other between the slide rails. The shielding plates are located above the through holes, and a connecting rod connected to the mounting frame is provided on the side of the shielding plate furthest from the shielding plate.

[0006] Further configuration: The connecting rod is rotatably connected to the mounting bracket and the baffle via a pin, the baffle is slidably connected to the slide rail, and the width of the baffle is greater than the diameter of the through hole.

[0007] Further configuration: The cleaning component includes a connecting frame fixed on the mounting bracket, a vertical rack fixed on the connecting frame, two lead screws arranged parallel inside the housing, a first gear fixed on the lead screw and meshing with the vertical rack, a movable seat mounted on the lead screw, a vertical through groove opened on the movable seat, a cleaning roller passing through the through groove of the movable seat, and the cleaning roller being located below the detection probe and passing between the connecting rods, limit plates are provided at both ends of the cleaning roller, a sliding groove is opened on the limit plate, a boss is provided on the side of the limit plate near the movable seat, the boss is located below the sliding groove, a second gear is fixed on the cleaning roller above the boss, and teeth are provided on the upper surface of the boss to mesh with the second gear.

[0008] Further configuration: The lead screw is rotatably connected to the housing, the threads on the two lead screws rotate in opposite directions, and the movable seat is threadedly connected to the lead screw.

[0009] Further configuration: The cleaning roller is rotatably connected to the through groove on the moving seat, the middle part of the slide groove on the limiting plate is inclined downward and the two ends are horizontal, the cleaning roller is slidably connected to the slide groove, and the length of the slide groove is less than the corresponding height distance between the connecting rods after the baffle is closed.

[0010] Further details: A through hole is provided on the support plate, and the detection probe is connected to the ultrasonic crack detector via a cable.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The protective mechanism inside the enclosure allows the electric telescopic rod to extend and push the mounting frame and the detection probe downwards. The mounting frame, via a connecting rod, pushes the baffle plate to slide under the limit of the slide rail, causing the baffle plate to open the through hole at the bottom of the enclosure. At the same time, the cleaning component connected to the mounting frame cleans the bottom of the detection probe, protecting and cleaning the detection probe and ensuring the effectiveness of the detection. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the railway bridge crack detection device described in this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a railway bridge crack detection device described in this utility model from another perspective;

[0016] Figure 3This is a half-sectional structural diagram of the railway bridge crack detection device described in this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the railway bridge crack detection device described in this utility model;

[0018] Figure 5 This is a schematic diagram of the protective mechanism of the railway bridge crack detection device described in this utility model;

[0019] Figure 6 yes Figure 5 Another perspective structural diagram;

[0020] Figure 7 This is a right-side cross-sectional view of the protective mechanism of the railway bridge crack detection device described in this utility model.

[0021] The annotations in the attached figures are explained as follows:

[0022] 11. Housing; 12. Support plate; 13. Ultrasonic crack detector; 14. Electric telescopic rod; 15. Mounting frame; 16. Detection probe; 17. Damping shock absorber; 18. Moving wheel; 21. Slide rail; 22. Baffle plate; 23. Connecting rod; 24. Connecting frame; 25. Vertical rack; 26. Lead screw; 27. First gear; 28. Moving seat; 29. ​​Cleaning roller; 210. Second gear; 211. Limiting plate; 212. Slide groove; 213. Boss. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-7 As shown, a railway bridge crack detection device includes a detection body, which includes a box 11. A support plate 12 is fixed inside the box 11. An ultrasonic crack detector 13 and an electric telescopic rod 14 are installed on the support plate 12. A mounting frame 15 is connected to the lower end of the electric telescopic rod 14. A detection probe 16 is fixed on the mounting frame 15. A through hole is opened on the support plate 12. The detection probe 16 and the ultrasonic crack detector 13 are connected by a wire. Damping shock absorbers 17 are set at the four corners of the lower end of the box 11. A moving wheel 18 is fixed at the lower end of the damping shock absorber 17. A through hole corresponding to the detection probe 16 is set at the bottom of the box 11. A protective mechanism is set inside the box 11 to protect and clean the detection probe 16 during the up and down movement of the detection probe 16.

[0027] In this embodiment: the protective mechanism includes a shielding component, and cleaning components are provided on both sides of the shielding component. The shielding component includes a slide rail 21 that is fixed parallel to the bottom of the inner side of the box 11. Two shielding plates 22 are arranged opposite to each other between the slide rails 21. The shielding plates 22 are located above the through hole. A connecting rod 23 connected to the mounting frame 15 is provided on the side away from the shielding plate 22. The connecting rod 23 is rotatably connected to the mounting frame 15 and the shielding plate 22 through a pin. The shielding plate 22 is slidably connected to the slide rail 21. The width of the shielding plate 22 is greater than the diameter of the through hole. During the process of the electric telescopic rod 14 extending and pushing the mounting frame 15 to move downward as a whole, the mounting frame 15 pushes the shielding plate 22 to slide under the limit of the slide rail 21 through the connecting rod 23, so that the shielding plate 22 opens the through hole at the bottom of the box 11, so that the detection probe 16 can extend out of the box 11 to detect the bridge below.

[0028] The cleaning assembly includes a connecting frame 24 fixed on the mounting bracket 15, a vertical rack 25 fixed on the connecting frame 24, two lead screws 26 arranged in parallel inside the housing 11, a first gear 27 fixed on the lead screw 26 and meshing with the vertical rack 25, a movable seat 28 mounted on the lead screw 26, a vertical through groove opened on the movable seat 28, a cleaning roller 29 passing through the through groove of the movable seat 28, and the cleaning roller 29 being located below the detection probe 16 and passing through the connecting rod 23. Between, the cleaning roller 29 is provided with limit plates 211 at both ends, and the limit plates 211 are provided with sliding grooves 212. The limit plates 211 are provided with bosses 213 on the side near the moving seat 28. The bosses 213 are located below the sliding grooves 212. The cleaning roller 29 is fixed with a second gear 210 on the upper side of the bosses 213. The upper end face of the bosses 213 is provided with teeth that mesh with the second gear 210. The bottom of the housing 11 is provided with a through hole to avoid the vertical rack 25. The lead screw 26 is rotatably connected to the housing 11, and the threads on the two lead screws 26 rotate in opposite directions. The movable seat 28 is threadedly connected to the lead screw 26. The cleaning roller 29 is rotatably connected to the through groove on the movable seat 28. The middle part of the slide groove 212 on the limiting plate 211 is inclined downward, and the two ends are horizontal. The cleaning roller 29 is slidably connected to the slide groove 212. The length of the slide groove 212 is less than the corresponding height distance between the connecting rods 23 after the baffle plate 22 is closed. When the mounting frame 15 moves downward, the connecting frame 24 fixed on the mounting frame 15 moves the vertical rack 25 downward. The vertical rack 25 meshes with the first gear 27 on the lead screw 26 and rotates, causing the lead screw 26 to rotate and drive the movable seat 28 to move in the slide groove 212 of the limiting plate 211. At the same time, the second gear 210 on the cleaning roller 29 meshes with the boss 213 on the side wall of the limiting plate 211 and rotates, so that the cleaning roller 29 cleans the bottom of the downward-moving detection probe 16.

[0029] The working principle and usage process of this utility model are as follows: The entire assembly is moved to the detection bridge area supported by the moving wheels 18 at the lower end of the damping shock absorber 17. The electric telescopic rod 14 extends to push the mounting frame 15 downward. During the movement, the mounting frame 15 pushes the shielding plate 22 to slide under the limit of the slide rail 21 via the connecting rod 23, so that the shielding plate 22 opens the through hole at the bottom of the box 11. At the same time, the vertical rack 25 fixed on the mounting frame 15 via the connecting frame 24 moves downward and meshes with the first gear 27 on the lead screw 26, causing the lead screw 26 to rotate and drive the moving seat 28 to move in the slide groove 212 of the limiting plate 211. At the same time, the second gear 210 on the cleaning roller 29 meshes with the boss 213 on the side wall of the limiting plate 211, causing the cleaning roller 29 to clean the bottom of the downward-moving detection probe 16. After the detection is completed, the electric telescopic rod 14 is retracted upward, so that the cleaning roller 29 and the shielding plate 22 move in opposite directions to reset.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A railway bridge crack detection device, comprising a detection body, the detection body including a box (11), a support plate (12) fixed inside the box (11), an ultrasonic crack detector (13) and an electric telescopic rod (14) mounted on the support plate (12), a mounting frame (15) connected to the lower end of the electric telescopic rod (14), a detection probe (16) fixed on the mounting frame (15), damping shock absorbers (17) provided at the four corners of the lower end of the box (11), and a moving wheel (18) fixed to the lower end of the damping shock absorber (17), characterized in that: The bottom of the housing (11) is provided with a through hole corresponding to the detection probe (16). The housing (11) is provided with a protective mechanism for protecting and cleaning the detection probe (16) during the up and down movement of the detection probe (16). The protective mechanism includes a shielding component, and cleaning components are provided on both sides of the shielding component. The shielding component includes a slide rail (21) that is fixed parallel to the bottom of the inner side of the housing (11). Two shielding plates (22) are provided opposite to each other between the slide rails (21). The shielding plates (22) are located above the through hole. A connecting rod (23) connected to the mounting bracket (15) is provided on the side of the shielding plate (22) away from the side.

2. The railway bridge crack detection device according to claim 1, characterized in that: The connecting rod (23) is rotatably connected to the mounting bracket (15) and the baffle plate (22) via a pin. The baffle plate (22) is slidably connected to the slide rail (21). The width of the baffle plate (22) is greater than the diameter of the through hole.

3. The railway bridge crack detection device according to claim 1, characterized in that: The cleaning assembly includes a connecting frame (24) fixed on the mounting bracket (15), a vertical rack (25) fixed on the connecting frame (24), two lead screws (26) arranged in parallel inside the housing (11), a first gear (27) meshing with the vertical rack (25) fixed on the lead screw (26), a movable seat (28) mounted on the lead screw (26), a vertical through groove opened on the movable seat (28), a cleaning roller (29) passing through the through groove of the movable seat (28), and the cleaning roller (29) being located at the detection probe. (16) The lower side passes between the connecting rods (23). The cleaning roller (29) is provided with limit plates (211) at both ends. The limit plates (211) are provided with grooves (212). The limit plates (211) are provided with bosses (213) on the side near the moving seat (28). The bosses (213) are located below the grooves (212). The cleaning roller (29) is fixed with a second gear (210) on the upper side of the bosses (213). The upper end face of the bosses (213) is provided with teeth that mesh with the second gear (210).

4. The railway bridge crack detection device according to claim 3, characterized in that: The lead screw (26) is rotatably connected to the housing (11), and the threads on the two lead screws (26) turn in opposite directions. The movable seat (28) is threadedly connected to the lead screw (26).

5. A railway bridge crack detection device according to claim 4, characterized in that: The cleaning roller (29) is rotatably connected to the through groove on the movable seat (28). The middle part of the slide groove (212) on the limiting plate (211) is inclined downward and the two ends are horizontal. The cleaning roller (29) is slidably connected to the slide groove (212). The length of the slide groove (212) is less than the corresponding height distance between the connecting rods (23) after the baffle plate (22) is closed.

6. The railway bridge crack detection device according to claim 1, characterized in that: The support plate (12) has a through hole, and the detection probe (16) is connected to the ultrasonic crack detector (13) by a wire.

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