Subway track structure low-strain crack detection device

Abstract

The utility model discloses a low strain crack detection device for a subway track structure, which relates to the technical field of railway detection and comprises a detection box and a driving box, detection equipment is arranged in the detection box, a detector is arranged on one side of the detection box, and the detector is in communication connection with the detection equipment; a driving structure is arranged on the bottom surfaces of the detection box and the driving box, through the arrangement of the driving structure, the rollers of the bottom surface fixing plates of the detection box and the driving box can be clamped with the side surfaces of the rail, then the detachable dismounting plate rollers are attached to the other surface of the rail, and the dismounting plate and the bottom surfaces of the detection box and the driving box are mounted and fixed; the device is positioned and mounted on the top surface of the rail; a connecting structure is arranged between the detection box and the driving box, the first connecting plate and the second connecting plate are connected through a fixing pin by arranging the connecting structure, so that the driving box and the detection box can rotate relatively while being connected, and the device can move smoothly when moving to the bent section of the subway track.

Description

Technical Field

[0001] The utility model relates to the technical field of railway detection, and particularly relates to a low-strain crack detection device for subway track structures. Background Art

[0002] With the rapid development of high-speed railways in China, the contradiction between safe transportation and equipment condition management has become increasingly prominent. By establishing an effective monitoring system and conducting long-term monitoring of fixed equipment, it has become a guarantee for ensuring the safe, reliable, and efficient operation of high-speed railways. During long-term use, the rails are prone to minor damages such as cracking and gouging. If not detected in time, they are extremely likely to rapidly expand into fatal damages, thereby causing serious accidents such as derailment. Therefore, it is extremely important to find a method that can quickly, real-time, and reliably monitor the cracks and damages of the rails. Currently, the commonly used rail crack detection methods include magnetic flux leakage detection, eddy current detection, video and optoelectronic image detection, ray detection, and ultrasonic guided wave detection.

[0003] As the carrier of the detection instrument, the detection vehicle body also needs to develop significantly to meet the increasingly stringent detection environment. First, the existing detection vehicle bodies include rigid vehicle bodies and two-wheel vehicle bodies. The two-wheel vehicle bodies cannot be independently supported and require manual pushing to complete rail detection. In the prior art, there are detection devices that improve the two-wheel vehicle bodies. For example, the railway track crack detector with the publication number CN209037567U includes a front frame, a rear frame, a driving wheel set, a wheel set, and a detection unit; the entire detector vehicle body adopts a split structure, which solves the disadvantage of requiring manual support for two wheels.

[0004] During the driving process of this detector, it cannot be relatively fixed with the rails, so it cannot move along the direction of the rails. At the same time, this detector cannot bend and turn along with the rails in the curved section. Summary of the Invention

[0005] The purpose of the utility model is to solve the problems that the detection device in the above background art cannot be positioned and fixed on the rails and cannot bend along with the rails in the curved section, and to propose a low-strain crack detection device for subway track structures.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] A low-strain crack detection device for subway track structures includes a detection box and a driving box. A detector is arranged on one side of the detection box; a driving structure is arranged on the bottom surfaces of the detection box and the driving box, and the driving structure includes:

[0008] A fixing plate, which is arranged on the bottom surfaces of the detection box and the driving box, and one side of the fixing plate is rotatably connected with a roller;

[0009] An installation cavity is provided on the bottom surfaces of the detection box and the drive box. A motor is arranged in the installation cavity, and the motor is in transmission connection with the roller of the fixed plate;

[0010] A disassembly plate is detachably connected to the bottom surfaces of the detection box and the drive box, and a roller is connected to one side of the disassembly plate;

[0011] A connection structure is arranged between the detection box and the drive box. Two first connection plates are arranged on one side of the detection box, two second connection plates are arranged on one side of the drive box, and a fixing pin is arranged between the first connection plate and the second connection plate.

[0012] As a further scheme of the present utility model: a fixing nut is arranged at the top end of the fixing pin in a threaded manner.

[0013] As a further scheme of the present utility model: a transmission wheel is arranged at the output end of the motor in the installation cavity, and a transmission belt is sleeved between the transmission wheel and the rotating shaft of the roller on the fixed plate.

[0014] As a further scheme of the present utility model: the disassembly plate and the fixed plate are symmetrically arranged with respect to the central plane of the detection box and the drive box.

[0015] As a further scheme of the present utility model: threaded holes are arranged inside the disassembly plate, connection grooves are arranged at corresponding positions on the bottom surfaces of the detection box and the drive box, fixing bolts are arranged in the threaded holes, and the top ends of the fixing bolts extend into the connection grooves for threaded connection.

[0016] The beneficial effects of the present utility model:

[0017] (1) For a low-strain crack detection device for a subway track structure of the present utility model, by setting a driving structure, the rollers on the fixed plates at the bottom surfaces of the detection box and the drive box can be engaged with the side surface of the railway track. Subsequently, the rollers of the detachable disassembly plate are attached to the other side of the railway track, and the disassembly plate is installed and fixed to the bottom surfaces of the detection box and the drive box, thereby positioning and installing the device on the top surface of the railway track;

[0018] (2) For a low-strain crack detection device for a subway track structure of the present utility model, by setting a connection structure, the first connection plate and the second connection plate are connected by a fixing pin, so that the drive box and the detection box can rotate relative to each other while being connected, and can move smoothly when the device moves to the curved section of the subway track. Description of the Drawings

[0019] The following further describes the present utility model with reference to the drawings.

[0020] Figure 1 It is a schematic structural diagram of a low-strain crack detection device for a subway track structure of the present utility model;

[0021] Figure 2It is a schematic structural diagram of the second perspective of a low-strain crack detection device for a subway track structure of the present utility model;

[0022] Figure 3 It is a schematic sectional view of a low-strain crack detection device for a subway track structure of the present utility model.

[0023] In the figure: 1, detection box; 2, detector; 3, driving structure; 31, fixing plate; 32, roller; 33, installation cavity; 34, motor; 35, driving wheel; 36, transmission belt; 37, disassembly plate; 38, connection groove; 39, fixing bolt; 4, driving box; 5, connection structure; 51, first connection plate; 52, second connection plate; 53, fixing pin; 54, fixing nut; 6, handrail. Specific implementation manners

[0024] 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-3As shown in the figure, the utility model relates to a low-strain crack detection device for a subway track structure, which includes a detection box 1. One side of the detection box 1 is fixedly connected with a detector 2. Detection equipment is arranged inside the detection box 1, and the detection equipment is communicatively connected with the detector 2. A handrail 6 is arranged on the top surface of the detection box 1. A driving box 4 is arranged on the side of the detection box 1 away from the detector 2. Driving structures 3 are arranged at the bottoms of the detection box 1 and the driving box 4. The fixing plate 31 of the driving structure 3 is arranged on one side of the bottom surfaces of the detection box 1 and the driving box 4. A roller 32 is rotatably arranged on the side of the fixing plate 31 close to the central plane of the detection box 1 and the driving box 4. Installation cavities 33 are formed at the bottoms of the detection box 1 and the driving box 4. A motor 34 is arranged inside the installation cavity 33. The motor 34 is arranged along the horizontal direction, and the output end of the motor 34 faces the vertical plane where the roller 32 of the fixing plate 31 is located. A transmission wheel 35 is arranged at the output end of the motor 34. A transmission belt 36 is sleeved on the surface of the transmission wheel 35, and the bottom end of the transmission belt 36 is sleeved on the rotating shaft of the roller 32 of the fixing plate 31. A removal plate 37 is detachably arranged at the bottom of the detection box 1 and the driving box 4. The removal plate 37 and the fixing plate 31 are symmetrically arranged with respect to the central plane of the detection box 1 and the driving box 4. The same rollers 32 are arranged on the side of the removal plate 37 close to the fixing plate 31. A vertical threaded hole is formed on the bottom surface of the removal plate 37. Corresponding connection grooves 38 are arranged at the installation positions on the bottom surfaces of the detection box 1 and the driving box 4. The threaded hole of the removal plate 37 and the connection groove 38 are located on the same vertical line. A fixing bolt 39 is arranged from the threaded hole on the bottom surface of the removal plate 37, and the top end of the fixing bolt 39 extends into the connection groove 38 for positioning and installation.

[0026] A connection structure 5 is arranged between the detection box 1 and the driving box 4. The first mounting plate of the connection structure 5 is arranged on the side of the detection box 1 close to the driving box 4. The two first mounting plates are arranged along the horizontal plane on one side of the detection box 1 and are located in the same vertical plane. Two second connection plates 52 are arranged on the side of the driving box 4 close to the detection box 1. The second connection plates 52 are arranged along the horizontal plane. The two second connection plates 52 are located between the two first connection plates 51, and one side of the second connection plate 52 can be attached to the first connection plate 51. Circular through holes with the same shape are arranged on the surfaces of the first connection plate 51 and the second connection plate 52. The same fixing pin 53 can be arranged in the circular through holes of the first connection plate 51 and the second connection plate 52. A fixing nut 54 is arranged at the top of the fixing pin 53 by threading.

[0027] When using this low-strain crack detection device for subway track structures, the detection box 1 can be connected to the drive box 4 through the connection structure 5. The second connecting plate 52 is snapped into the first connecting plate 51, and then the fixing pin 53 is inserted to enable relative rotation between the first connecting plate 51 and the second connecting plate 52. A fixing nut 54 is threadedly connected to the top surface of the fixing pin 53 to prevent the fixing pin 53 from falling out between the first connecting plate 51 and the second connecting plate 52. Subsequently, the detection box 1 and the drive box 4 are placed on the top surface of the railway track, and the rollers 32 of the bottom fixing plate 31 of the detection box 1 and the drive box 4 are set to contact the side surface of the railway track I-beam. Subsequently, the rollers 32 of the disassembly plate 37 are fitted to the other side of the railway track, and the disassembly plate 37 is placed at the designated installation position, and the installation of the disassembly plate 37 to the detection box 1 and the drive box 4 is completed through the fixing bolts 39. Thus, this detection device is positioned and installed on the railway track. Subsequently, the motor 34 inside the drive box 4 is started, and the output end of the motor 34 drives the transmission wheel 35 to rotate, indirectly driving the rollers 32 of the fixing plate 31 to rotate through the transmission belt 36, so that the entire device moves on the railway track. The detector 2 behind the detection box 1 detects and collects information on the surface of the railway track below, and thus transmits the collected data to the detection equipment inside the detection box 1. When there is a curved section on the railway track, the first connecting plate 51 and the second connecting plate 52 will rotate relative to each other, so that the detection box 1 and the drive box 4 rotate relative to each other, enabling this detection device to move smoothly on the curved railway track. The staff can separate the drive box 4 and the detection box 1 by removing the fixing pin 53. There is also a motor 34 inside the detection box 1, and the motor 34 can drive the detection box 1 to move. The staff needs to control the balance of the detection box 1 through the handrail 6.

[0028] Among them, the power of the motor 34 of the drive box 4 is greater than that of the motor 34 of the detection box 1. The motor 34 of the drive box 4 needs to drive the drive box 4 and the detection box 1 to move, so a high-power motor 34 is required; while the motor 34 inside the detection box 1 is only used when the detection box 1 is detected alone, so only a low-power motor 34 is needed.

[0029] The working principle of the present utility model: A low-strain crack detection device for subway track structures of the present utility model, by providing a drive structure 3, the rollers 32 of the bottom fixing plate 31 of the detection box 1 and the drive box 4 can be engaged with the side surface of the railway track. Subsequently, the rollers 32 of the detachable disassembly plate 37 are fitted to the other side of the railway track, and the disassembly plate 37 is installed and fixed to the bottom surface of the detection box 1 and the drive box 4, thus positioning and installing the device on the top surface of the railway track; by providing a connection structure 5, the first connecting plate 51 and the second connecting plate 52 are connected through the fixing pin 53, so that the drive box 4 and the detection box 1 can rotate relative to each other while being connected, and can move smoothly when the device moves to the curved section of the subway track.

[0030] The above has described in detail an embodiment of the present utility model, but the above content is only a preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A low strain crack detection device for subway track structure, characterized in that: The invention comprises a detection box (1) and a driving box (4), wherein a detection instrument (2) is arranged on one side of the detection box (1); a driving structure (3) is arranged on the bottom surfaces of the detection box (1) and the driving box (4), and the driving structure (3) comprises: A fixed plate (31) is arranged on the bottom surfaces of the detection box (1) and the driving box (4), and a roller (32) is rotatably connected to one side of the fixed plate (31); An installation cavity (33) is arranged on the bottom surface of the detection box (1) and the driving box (4), and a motor (34) is arranged in the installation cavity (33). The motor (34) is connected to the roller (32) of the fixing plate (31) by transmission; A disassembly plate (37) is detachably connected to the bottom surfaces of the detection box (1) and the drive box (4), and a roller (32) is connected to one side of the disassembly plate (37); A connection structure (5) is provided between the detection box (1) and the drive box (4); two first connection plates (51) are provided on one side of the detection box (1); two second connection plates (52) are provided on one side of the drive box (4); and a fixing pin (53) is provided between the first connection plate (51) and the second connection plate (52).

2. A subway track structure low strain crack detection device according to claim 1, characterized in that: The top end of the fixing pin (53) is threadedly provided with a fixing nut (54).

3. The low strain crack detection device for subway track structure according to claim 1 is characterized in that: A transmission wheel (35) is arranged at the output end of the motor (34) in the installation cavity (33), and a transmission belt (36) is sleeved between the transmission wheel (35) and the rotating shaft of the roller (32) on the fixed plate (31).

4. The low strain crack detection device for subway track structure according to claim 1 is characterized in that: The disassembly plate (37) and the fixing plate (31) are symmetrically arranged with respect to the central plane of the detection box (1) and the driving box (4).

5. The low strain crack detection device for subway track structure according to claim 1 is characterized in that: A threaded hole is provided inside the disassembly plate (37), and connecting grooves (38) are provided at corresponding positions on the bottom surfaces of the detection box (1) and the drive box (4). A fixing bolt (39) is provided in the threaded hole, and the top end of the fixing bolt (39) extends into the connecting groove (38) for threaded connection.

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