Subway rail fastener looseness detection device

Abstract

The utility model discloses a subway track fastener looseness detection device which comprises a sleeper, a steel rail is installed above the sleeper, the left side and the right side of the steel rail are both provided with fastening blocks, pressing blocks are arranged below the fastening blocks, holes are formed in the surfaces of the fastening blocks and the surfaces of the pressing blocks, and bolts are arranged on the upper surfaces of the fastening blocks. When the bolt is loosened, the stress of the pressing opening is reduced, so that the pressing force of the pressing opening on the vibration probe is also reduced, the vibration probe shakes due to lack of enough pressing force, the vibration probe and the vibration sensor are connected with each other, and when the vibration probe shakes, the vibration sensor is connected with the vibration probe. The vibration sensor can sense the vibration and convert the vibration into an electric signal, in this way, higher-precision detection is achieved, when the bolt is loosened, the pressing force on the bolt base is correspondingly reduced, and in this way, the outer wall of the bolt does not need to be attached, and fastener loosening detection is achieved by making contact with the bolt.

Description

TECHNICAL FIELD

[0001] The utility model relates to subway detection technical field, concretely is a subway track fastener loosening detection device. BACKGROUND

[0002] The subway rail fastener is the part used to connect the rail and the sleeper or other types of track foundation, its function is to fix the rail on the sleeper, keep the track gauge and prevent the rail from moving longitudinally and transversely relative to the sleeper, including the spike, the track under the pad and the elastic or rigid fastener, etc., the fastener should be able to keep the reliable connection of the rail and the sleeper for a long time, and can fully play its buffering and damping performance under the action of power, delay the accumulation of track residual deformation, so it should have enough strength, durability and certain elasticity, and should also have simple structure, easy installation and disassembly.

[0003] The device for detecting the loosening of the rail fastener in real time at high speed disclosed in the prior art document with the publication number CN220701104U relates to the field of railway detection, and specifically discloses a device for detecting the loosening of the rail fastener in real time at high speed, which comprises a rail, a fastener, a vibration detection probe, and a data collector.

[0004] The device for detecting the loosening of the rail fastener in real time at high speed disclosed in the prior art document with the publication number CN220701104U relates to the field of railway detection, and specifically discloses a device for detecting the loosening of the rail fastener in real time at high speed, which comprises a rail, a fastener, a vibration detection probe, and a data collector.

[0005] Therefore, the technical personnel in the art provide a subway track fastener loosening detection device to solve the problems raised in the background art. UTILITY MODEL CONTENTS

[0006] The utility model discloses a subway track fastener loosening detection device to solve the problem of the poor fastener loosening detection effect of the prior art and the difficulty in detecting slightly loosened fasteners.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A subway track fastener loosening detection device, comprising: a sleeper, a steel rail is installed above the sleeper, a fastener block is installed on the left and right sides of the steel rail, a pressing block is arranged below the fastener block, holes are arranged on the surfaces of the fastener block and the pressing block, a bolt is arranged on the upper surface of the fastener block, a screw hole is formed in the inside of the bolt, the screw hole is internally threadedly connected with a bolt, a pressing opening is formed on the surface of the bolt, a vibration probe is installed in the inside of the pressing opening, and a vibration sensor is connected to one end of the vibration probe.

[0009] As a further scheme of the utility model, the fastener block is connected with the bolt through the bolt, and the bolt vertically penetrates the bolt, the fastener block and the pressing block.

[0010] As a further scheme of the utility model, a buffer gap is formed in the inside of the pressing opening.

[0011] As a further scheme of the utility model, the external structure of the bolt is in a half-enclosing shape, and one end of the pressing opening on the surface of the bolt is in an open structure.

[0012] As a further scheme of the utility model, an anti-abrasion pad is fixed to the bottom of the bolt, and the bottom of the bolt and the upper surface of the fastener block are mutually attached.

[0013] As a further scheme of the utility model, the bolt is connected with the vibration probe through the pressing opening.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The bolt is installed and connected with the buckle block and the pressing block through the bolt seat, and the connecting mode ensures the close combination between the bolt seat and the buckle block and the pressing block. In particular, the pressing opening is arranged on the surface of the bolt seat. The vibration probe is installed into the inside of the pressing opening. When the bolt is screwed down and fastened, the bolt seat is subjected to the pressure. One side of the bolt seat is provided with the pressing opening. With the continuous force of the bolt, the pressing opening is subjected to the stress deformation. The stress deformation enables the pressing opening to effectively press the vibration probe, so that the vibration probe is stably fixed on the bolt seat. When the bolt is loose, the stress of the pressing opening is reduced, so that the pressing force of the pressing opening on the vibration probe is also reduced. In this way, the vibration probe is subjected to the shaking due to the lack of sufficient pressing force. The vibration probe and the vibration sensor are connected with each other. When the vibration probe shakes, the vibration sensor can sense the vibration and convert the vibration into an electric signal. In this way, the detection with higher accuracy is realized. When the bolt is loose, the pressing force on the bolt seat is also reduced. The detection mode does not need to be attached to the outer wall of the bolt, but detects the loosening of the buckle by contacting the bolt. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of a subway track fastener loosening detection device.

[0017] Fig. 2 It is a bolt seat and vibration probe installation structural schematic view of a subway track fastener loosening detection device.

[0018] Fig. 3 It is a structural schematic view of a bolt seat in a subway track fastener loosening detection device.

[0019] Fig. 4 It is an inside bottom view structural schematic view of a bolt seat in a subway track fastener loosening detection device.

[0020] In the figure: 1, sleeper; 2, steel rail; 3, buckle block; 4, pressing block; 5, bolt seat; 6, bolt; 7, screw hole; 8, pressing opening; 9, wear pad; 10, vibration probe; 11, vibration sensor; 12, buffer opening. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the present application.

[0022] Please refer to Figs. 1-4The utility model discloses a subway track fastener loosening detection device, include: the sleeper 1, the upper portion of sleeper 1 is installed with the steel rail 2, the left and right sides of steel rail 2 are all installed with the buckle block 3, and the lower portion of buckle block 3 is provided with the pressing block 4, and the surface of buckle block 3 and pressing block 4 all is provided with the hole,

[0023] Specifically, in the installation process of subway track, first need to place steel rail 2 on sleeper 1, subsequently, buckle block 3 is placed in the left and right sides of steel rail 2, ensure that they can stably contact with steel rail 2, to further ensure that there is no height difference between buckle block 3 and sleeper 1, will set up pressing block 4 below buckle block 3, the effect of these pressing block 4 is to compensate the height difference between buckle block 3 and sleeper 1, to guarantee the flatness and stability of overall structure.

[0024] The upper surface of buckle block 3 is provided with bolt 6, and the inside of bolt 6 is fixed with screw hole 7, the inside screw thread connection of screw hole 7 has bolt 6, the surface of bolt 6 is fixed with pressure port 8, and vibration probe 10 is installed in the inside of pressure port 8, and one end of vibration probe 10 is connected with vibration sensor 11.

[0025] Buckle block 3 is connected with bolt 6 through bolt 6, and bolt 6 simultaneously vertically penetrates bolt 6, buckle block 3 and pressing block 4, the inside of pressure port 8 is provided with buffer gap 12, the external structure shape of bolt 6 is half-enclosed, and one end of pressure port 8 on the surface of bolt 6 is open structure, the bottom of bolt 6 is fixed with wear pad 9, and the bottom of bolt 6 and the upper surface of buckle block 3 are mutually attached, and bolt 6 is connected with vibration probe 10 through pressure port 8,

[0026] Specifically, the bolt 6 will pass through the screw hole 7 on the surface of the bolt 6 downward, the purpose is to firmly fix the bolt 6 on the upper surface of the buckle block 3, as the bolt 6 continues to tighten, the bolt 6 will be subjected to increasing pressure, in turn, the bolt 6 makes the buckle block 3 more tightly buckled to the rail 2, so as to firmly fix the rail 2 on the sleeper 1, during the tightening process of the bolt 6, the pressure port 8 on the surface of the bolt 6 may be deformed due to stress, in order to adapt to the deformation, the inside of the pressure port 8 is specially designed with a buffer gap 12, so that the pressure port 8 can respond more flexibly when deformed under stress, the vibration probe 10 is cleverly arranged in the inside of the pressure port 8, when the pressure port 8 is deformed due to stress, it will apply pressure to the vibration probe 10, so as to realize the compression and fixation of the vibration probe 10, however, when the bolt 6 is loose, the pressure applied by the pressure port 8 to the vibration probe 10 will decrease accordingly, causing the vibration probe 10 to shake, which will directly affect the stability of the vibration sensor 11, when the vibration sensor 11 senses vibration, the piezoelectric material inside it will deform due to vibration, in turn, generating electric charge, the amount of electric charge is proportional to the vibration acceleration, the generated electric charge is converted into a voltage signal by the built-in circuit of the vibration sensor 11, and finally output, so as to detect whether the bolt 6 is loose.

[0027] The working principle of the utility model is:

[0028] When the subway train runs through the track, vibration will be generated on the track, which will be transmitted to the buckle block 3 and the bolt 6 on the buckle block 3, especially when the bolt 6 is loose, the tightening force of the buckle block 3 on the rail 2 decreases, after the bolt 6 is loose, the compression force of the bolt 6 on the bolt 6 decreases, the compression force generated by the deformation of the pressure port 8 is insufficient, and the vibration probe 10 cannot be further compressed, the vibration probe 10 will be affected after shaking, the vibration probe 10 can capture these vibration signals in real time and transmit them to the vibration sensor 11, the vibration sensor 11 will then convert these vibration signals into electric signals, these electric signals can be further processed and analyzed to determine whether the bolt 6 is in a loose state, in this way, the device can realize real-time monitoring of the loosening of the subway track fastener, greatly improving the efficiency and accuracy of track safety detection.

[0029] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A device for detecting loosening of a subway track fastener, characterized by, Include: Rail tie (1), the upper of rail tie (1) is installed with rail (2), the left and right sides of rail (2) are installed with buckle block (3), and the lower of buckle block (3) is provided with pressing block (4), the surface of buckle block (3) and pressing block (4) is provided with hole, the upper surface of buckle block (3) is provided with bolt (6), and the inside of bolt (6) is fixed to be provided with screw hole (7), the inside of screw hole (7) is connected with bolt (6) with screw thread, the surface of bolt (6) is fixed to be provided with pressure port (8), and the inside of pressure port (8) is installed with vibration probe (10), one end of vibration probe (10) is connected with vibration sensor (11).

2. The device for detecting loosening of a subway track fastener according to claim 1, wherein The buckle block (3) is connected with the bolt (6) by the bolt (6), and the bolt (6) penetrates the bolt (6), the buckle block (3) and the pressing block (4) vertically at the same time.

3. The device for detecting loosening of a subway track fastener according to claim 1, wherein The inside of the pressure port (8) is provided with a buffer gap (12).

4. The device for detecting loosening of a subway track fastener according to claim 1, wherein The external structure of the bolt (6) is half-enclosed, and one end of the surface pressure port (8) of the bolt (6) is an open structure.

5. The device for detecting loosening of a subway track fastener according to claim 1, wherein The bottom of the bolt (6) is fixed with an anti-abrasion pad (9), and the bottom of the bolt (6) and the upper surface of the buckle block (3) are mutually attached.

6. The device for detecting loosening of a subway track fastener according to claim 1, wherein The bolt (6) is connected with the vibration probe (10) through the pressure port (8).

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