Subway rail detection device

Abstract

The utility model belongs to the technical field of detection devices, and particularly relates to a subway rail detection device which comprises a detection platform, one end of the detection platform is connected with an automatic ultrasonic detection assembly, the automatic ultrasonic detection assembly comprises a device frame, walking mechanisms are installed at the bottom of the detection platform and the bottom of the device frame, and a coupling agent storage and output device is installed at the top of the device frame. Three fixing seats are installed on the side faces of the two sides of the device frame correspondingly, spring telescopic rods are connected to the bottoms of the fixing seats, a first fixing plate, a second fixing plate and a third fixing plate are fixedly installed below the spring telescopic rods at the bottoms of the three fixing seats correspondingly, and a smearing wheel installation cover is installed at the bottom of the first fixing plate; according to the device, the couplant smearing uniformity can be improved, meanwhile, the couplant can be automatically recycled and reused, the cost is saved, meanwhile, the risk that due to the fact that a large amount of couplant is left on a track, wheels of a train passing subsequently slip and the like is reduced, and safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of detection device, concretely relates to a subway rail detection device. BACKGROUND

[0002] The subway is a kind of urban rail transit line system, refers to the construction in city, fast, large capacity, power traction track transport.Trains run on fully enclosed line, the line in central urban area is basically set in underground tunnel, the line outside central urban area is generally set on viaduct or ground, is the city rail transit system covering various underground and overground right of way exclusive, high density, high capacity.

[0003] In order to ensure the safe operation of subway, the rail of subway needs to be detected periodically, and the detection of subway rail is currently carried out by robot capable of walking on track, which walks automatically along the track through track wheel installed at the bottom, detects the appearance of track through visual detection and laser detection means, and detects the internal damage of track through ultrasonic detection, before ultrasonic detection of track, coupling agent needs to be coated on track, in the prior art, the coupling agent is coated on track by brush roll, which is prone to uneven coating, and the coupling agent is difficult to recycle and reuse effectively, which not only causes waste, but also causes coupling agent to remain on track, and there is a certain risk of train wheel skidding. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model aims at providing a subway rail detection device, which can improve the uniformity of coupling agent coating, automatically recycle and reuse the coupling agent, save cost, reduce the risk of train wheel skidding caused by a large amount of coupling agent remaining on track, and improve safety.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A subway rail detection device, one end of detection platform is connected with automatic ultrasonic detection component, the automatic ultrasonic detection component includes device frame, the bottom of detection platform and device frame all is installed with travelling mechanism, the top of device frame is installed with couplant storage output device, both sides of device frame are installed with three fixed bases, the bottom of fixed base is connected with spring telescopic link, the below of spring telescopic link of three fixed bases bottom is fixed respectively with first fixed plate, second fixed plate, third fixed plate, the bottom of first fixed plate is installed with smearing wheel installation cover, the top of smearing wheel installation cover is fixed with the pipe joint of the bar of the penetration, the bottom of pipe joint is connected with containing pipe, the inside of smearing wheel installation cover is rotatably installed with smearing wheel, the top of first fixed plate is also installed with motor, the output end of motor is connected with cleaning brush, the bottom of second fixed plate is installed with ultrasonic probe, the bottom of third fixed plate is installed with recovery suction cover, one end of recovery suction cover is connected with negative pressure recovery filter device, the bottom of detection platform is installed with laser vision detection module.

[0006] The beneficial effects of the utility model are that: the device has automatic ultrasonic detection function for rails, and has storage, automatic conveying, coating and automatic recycling functions for coupling agent used for ultrasonic detection, improves the uniformity of coupling agent smearing, automatically recycles the coupling agent, saves cost, reduces the risk of train wheel skidding caused by a large amount of coupling agent remaining on the track, and improves safety.

[0007] In order to the travelling of the device:

[0008] As a further improvement of the above technical scheme: the travelling mechanism includes a track wheel mounting frame mounted on the bottom of the detection platform and the device frame, a wheel shaft is rotatably installed on the inner side of the track wheel mounting frame, the distal end of the wheel shaft is connected with a track wheel, a double-head motor is installed inside the track wheel mounting frame below the detection platform, and the output end of the double-head motor is connected with the wheel shaft.

[0009] The beneficial effects of the improvement are that: when the device is used, the wheel shaft connected with the double-head motor is driven to rotate, and the device is driven to travel on the track through the track wheels.

[0010] In order to connect the detection platform and the device frame:

[0011] As a further improvement of the above technical solution: one end of the device frame is provided with a universal ball joint, one end of the universal ball joint is connected with a docking socket, one end of the detection platform is provided with a docking slot, the docking socket is insertedly connected with the docking slot, and a latch hole is penetratingly arranged between the top and the inner side of the docking slot and between the top and the bottom of the docking socket, and a latch is inserted therein.

[0012] The improved beneficial effect is that the docking slot and the docking socket are fixed by the latch, and the detection platform drags the device frame to walk when walking, and the universal ball joint is arranged to enable the detection platform and the device frame to adaptively rotate with the bending and undulating of the track.

[0013] As a further improvement of the above technical solution: the coupling agent storage and output device comprises a liquid storage tank support and a micro peristaltic pump mounted on the top of the device frame, a corrosion-resistant hose is connected between the hose interface and the liquid storage tank, the corrosion-resistant hose passes through the micro peristaltic pump, a liquid storage tank is fixedly installed on the inner side of the liquid storage tank support, a liquid level sensor is arranged in the liquid storage tank, a filling opening is connected to the top of the liquid storage tank, a sealing cover is threadedly connected to the top of the filling opening, and an electric heating sheet is inlaidly installed on the outer side of the liquid storage tank.

[0014] The improved beneficial effect is that the operation of the micro peristaltic pump delivers the coupling agent in the liquid storage tank to the containing tube through the corrosion-resistant hose, uniformly outputs the coupling agent in the containing tube to the application wheel through the output strip-shaped groove at the bottom of the containing tube, monitors the liquid level of the coupling agent in the liquid storage tank through the liquid level sensor, fills the coupling agent into the liquid storage tank through the filling opening by opening the sealing cover, and heats the coupling agent in the liquid storage tank by turning on the electric heating sheet, thereby avoiding the solidification of the coupling agent.

[0015] In order to output the coupling agent to the application wheel:

[0016] As a further improvement of the above technical solution: the bottom of the containing tube is penetratingly provided with an output strip-shaped groove.

[0017] The improved beneficial effect is that the output strip-shaped groove is used to uniformly output the coupling agent filled in the containing tube to the application wheel.

[0018] In order to improve the uniformity of the application of the coupling agent on the track:

[0019] As a further improvement of the above technical solution: the outer side of the application wheel is provided with a containing groove.

[0020] The improved beneficial effect is that the containing groove is used to provide additional containing space for the coupling agent applied to the application wheel, thereby reducing the situation that the coupling agent is pushed to both sides due to the extrusion between the application wheel and the track when the application wheel applies the coupling agent to the track, and improving the uniformity of the application of the coupling agent on the track.

[0021] In order to recycle the coupling agent on the track:

[0022] As a further improvement of the above technical solution: the negative pressure recovery filter device comprises a negative pressure suction pipe connected with the recovery suction cover, a filter bin is installed in the middle section of the negative pressure suction pipe, a plurality of filter screens are arranged on the inner side of the filter bin, one end of the negative pressure suction pipe is connected with a negative pressure pump, the other end of the negative pressure pump is connected with a backflow pipe, and the other end of the backflow pipe is connected with a liquid storage tank.

[0023] The improved device has the beneficial effects that: as the device frame moves, the recovery suction cover moves to the detected position, the coupling agent on the track is scooped into the recovery suction cover through the shovel plate at the bottom of the recovery suction cover, the coupling agent in the recovery suction cover is sucked into the negative pressure suction pipe through the negative pressure pump, and the coupling agent is filtered through the filter screens on the inner side of the filter bin and then input into the liquid storage tank through the backflow pipe for recycling, thereby avoiding the safety hidden danger caused by the residual coupling agent to the subsequent subway train operation.

[0024] As a further improvement of the above technical solution: an ultrasonic generator is installed on the top of the device frame, and the ultrasonic generator and the ultrasonic probe are electrically connected.

[0025] The ultrasonic generator is used to generate a high-frequency electrical signal, and transmit the signal to the ultrasonic probe through a line between the ultrasonic generator and the ultrasonic probe. After the ultrasonic probe receives the electrical signal, the transducer in the ultrasonic probe starts to vibrate, converts the electrical signal into ultrasonic waves, and penetrates the sound waves into the track. The inside of the track is detected through the rebounding sound waves.

[0026] As a further improvement of the above technical solution: the laser vision detection module comprises a second connecting rod fixedly connected with the detection platform, a mounting bracket is installed at the bottom of the second connecting rod, a camera and a laser sensor are installed on the inner side of the mounting bracket, and a lighting lamp is installed at the bottom of the top plate of the mounting bracket. A storage battery and a control module are installed on the top of the detection platform.

[0027] As the device moves, the camera and the laser sensor detect whether the track is broken or deformed through visual detection and laser measurement respectively. The lighting lamp can provide illumination for visual detection. Visual detection and laser measurement are conventional detection means in the prior art, and the structure and principle will not be described here.

[0028] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is an axonometric structural schematic view of the utility model;

[0030] Figure 2 It is a sectional view schematic diagram of the utility model;

[0031] Figure 3 It is a bottom structure schematic diagram of the utility model;

[0032] Figure 4 It is a bottom schematic diagram of the detection platform in the utility model;

[0033] Figure 5 It is a bottom structure schematic diagram of the laser vision detection module in the utility model;

[0034] Figure 6 It is a local axis measurement schematic diagram of the utility model;

[0035] Figure 7 It is a mounting schematic diagram of the smearing wheel in the utility model;

[0036] Figure 8 It is a local structure schematic diagram of the negative pressure recovery filtering device in the utility model;

[0037] Figure 9 It is a fitting effect schematic diagram of the recovery suction cover and the track in the utility model.

[0038] In the drawing: 1, detection platform; 2, track wheel mounting frame; 3, double-head motor; 4, wheel shaft; 5, track wheel; 6, butt joint slot; 7, bolt; 8, automatic ultrasonic detection assembly; 9, butt joint socket; 10, universal ball joint; 11, device frame; 12, liquid storage tank support; 13, liquid storage tank; 14, liquid level sensor; 15, electric heating sheet; 16, micro peristaltic pump; 17, corrosion-resistant hose; 18, fixing base; 19, spring telescopic rod; 20, first fixing plate; 21, smearing wheel mounting cover; 22, hose interface; 23, containing pipe; 24, output strip-shaped groove; 25, smearing wheel; 26, containing groove; 27, electric motor; 28, cleaning brush; 29, second fixing plate; 30, ultrasonic probe; 31, ultrasonic generator; 32, third fixing plate; 33, recovery suction cover; 34, negative pressure suction pipe; 35, filtering bin; 36, filter screen; 37, negative pressure pump; 38, return pipe; 39, laser vision detection module; 40, second connecting rod; 41, mounting frame; 42, camera; 43, laser sensor; 44, illuminating lamp; 45, storage battery; 46, control module. DETAILED DESCRIPTION

[0039] In order to make the person skilled in the art better understand the technical scheme of the present application, the present application will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0040] AsFigures 1-9 As shown, a subway rail detection device, one end of a detection platform 1 is connected with an automatic ultrasonic detection assembly 8, the automatic ultrasonic detection assembly 8 includes a device frame 11, the bottom of the detection platform 1 and the device frame 11 is equipped with a walking mechanism, the top of the device frame 11 is equipped with a coupling agent storage output device, both sides of the device frame 11 are equipped with three fixed seats 18, the bottom of the fixed seat 18 is connected with a spring telescopic rod 19, the bottom of the three fixed seats 18 is fixedly installed with a first fixed plate 20, a second fixed plate 29 and a third fixed plate 32 respectively, the bottom of the first fixed plate 20 is equipped with a smearing wheel mounting cover 21, the top of the smearing wheel mounting cover 21 is penetrated and equipped with a hose interface 22, the bottom of the hose interface 22 is connected with a containing pipe 23, the inner side of the smearing wheel mounting cover 21 is rotatably equipped with a smearing wheel 25, the top of the first fixed plate 20 is further equipped with an electric motor 27, the output end of the electric motor 27 is connected with a cleaning brush 28, the bottom of the second fixed plate 29 is equipped with an ultrasonic probe 30, the bottom of the third fixed plate 32 is equipped with a recycling suction cover 33, one end of the recycling suction cover 33 is connected with a negative pressure recycling filter device, the bottom of the detection platform 1 is equipped with a laser vision detection module 39.

[0041] The device has automatic ultrasonic detection function for rail, and has storage, automatic conveying, coating and automatic recycling function for coupling agent used for ultrasonic detection, which improves the uniformity of coupling agent smearing, and can automatically recycle the coupling agent, saves cost, reduces the risk of train wheel skidding caused by large amount of coupling agent remaining on the track, and improves safety.

[0042] The walking mechanism includes a track wheel mounting frame 2 installed at the bottom of the detection platform 1 and the device frame 11, the inner side of the track wheel mounting frame 2 is rotatably equipped with an axle 4, the end of the axle 4 is connected with a track wheel 5, a double-head motor 3 is installed inside the track wheel mounting frame 2 below the detection platform 1, and the output end of the double-head motor 3 is connected with the axle 4.

[0043] When the device is used, the axle 4 connected with the double-head motor 3 is driven to rotate by the double-head motor 3, and the device is driven to walk on the track by each track wheel 5.

[0044] One end of the device frame 11 is provided with a universal ball joint 10, one end of the universal ball joint 10 is connected with a butt socket 9, one end of the detection platform 1 is provided with a butt slot 6, the butt socket 9 is insertedly connected with the butt slot 6, the top and inner side of the butt slot 6 and the top and bottom of the butt socket 9 are penetratedly provided with a bolt hole and insertedly provided with a bolt 7.

[0045] The plug-in slot 6 and the plug-in socket 9 are fixed by the plug 7, and the detection platform 1 walks while pulling the device frame 11 to walk, and the universal ball joint 10 is arranged to enable the detection platform 1 and the device frame 11 to adaptively rotate with the bending and undulating of the track.

[0046] The coupling agent storage output device comprises a liquid tank support 12 and a micro peristaltic pump 16 arranged on the top of the device frame 11, a corrosion-resistant hose 17 is connected between the hose interface 22 and the liquid tank 13, the corrosion-resistant hose 17 passes through the micro peristaltic pump 16, the liquid tank 13 is fixedly arranged on the inner side of the liquid tank support 12, a liquid level sensor 14 is arranged in the liquid tank 13, a filling opening is arranged on the top of the liquid tank 13, a sealing cover is threadedly connected on the top of the filling opening, and the electric heating sheet 15 is inlaid on the outer side of the liquid tank 13.

[0047] The operation of the micro peristaltic pump 16 delivers the coupling agent in the liquid tank 13 to the containing pipe 23 through the corrosion-resistant hose 17, uniformly outputs to the smearing wheel 25 through the output strip-shaped groove 24 at the bottom of the containing pipe 23, monitors the liquid level of the coupling agent in the liquid tank 13 through the liquid level sensor 14, fills the coupling agent into the liquid tank 13 through the filling opening by opening the sealing cover, and heats the coupling agent in the liquid tank 13 by opening the electric heating sheet 15, so as to avoid the solidification of the coupling agent.

[0048] The bottom of the containing pipe 23 is provided with the output strip-shaped groove 24.

[0049] The output strip-shaped groove 24 is used for uniformly outputting the coupling agent filled in the containing pipe 23 to the smearing wheel 25.

[0050] The outer side of the smearing wheel 25 is provided with the containing groove 26.

[0051] The containing groove 26 is used for providing additional containing space for the coupling agent smeared on the smearing wheel 25, so as to reduce the situation that the coupling agent is pushed to both sides due to the extrusion between the smearing wheel 25 and the track, and improve the uniformity of the smearing of the coupling agent on the track.

[0052] The negative pressure recovery filtering device comprises a negative pressure suction pipe 34 connected with a recovery suction cover 33, a filtering bin 35 is arranged on the middle segment of the negative pressure suction pipe 34, a plurality of filter screens 36 are arranged on the inner side of the filtering bin 35, one end of the negative pressure suction pipe 34 is connected with a negative pressure pump 37, the other end of the negative pressure pump 37 is connected with a backflow pipe 38, and the other end of the backflow pipe 38 is connected with the liquid tank 13.

[0053] With the travel of the device frame 11, the recovery suction cover 33 moves to the detected position, the coupling agent on the track is scooped into the recovery suction cover 33 by the shovel plate at the bottom of the recovery suction cover 33, the coupling agent in the recovery suction cover 33 is sucked into the negative pressure suction pipe 34 by the negative pressure pump 37, and after filtration by the filter screen 36 inside the filter bin 35, it is input into the liquid storage tank 13 through the return pipe 38 for reuse, while avoiding the safety hidden danger of coupling agent residues to the subsequent subway train operation.

[0054] The top of the device frame 11 is provided with an ultrasonic generator 31, and the ultrasonic generator 31 and the ultrasonic probe 30 are electrically connected.

[0055] The ultrasonic generator 31 is used to generate a high-frequency electrical signal, and transmit the signal to the ultrasonic probe 30 through the line between the ultrasonic generator 31 and the ultrasonic probe 30. After the ultrasonic probe 30 receives the electrical signal, the transducer inside the ultrasonic probe 30 starts to vibrate, converts the electrical signal into ultrasonic waves, and penetrates the sound waves into the track. The inside situation of the track is detected by the rebounding sound waves.

[0056] The laser vision detection module 39 includes a second connecting rod 40 fixed to the detection platform 1, a mounting bracket 41 is installed at the bottom of the second connecting rod 40, a camera 42 and a laser sensor 43 are installed inside the mounting bracket 41, and a lighting lamp 44 is installed at the bottom of the top plate of the mounting bracket 41. The top of the detection platform 1 is provided with a storage battery 45 and a control module 46.

[0057] With the travel of the device, the camera 42 and the laser sensor 43 detect whether the track is broken or deformed through visual detection and laser measurement, respectively. The lighting lamp 44 can provide lighting for visual detection. Visual detection and laser measurement are conventional detection means in the prior art, and the structure and principle will not be described again.

[0058] The utility model discloses a working principle and use flow: the device of the utility model uses, through double -end motor 3 drive and its connection wheel shaft 4 rotation, and then drive the device through each track wheel 5 walking on the track, and the detection platform 1 and device frame 11 are connected through the docking slot 6 and docking socket 9 between docking slot 6 and docking socket 9 are fixed through the bolt 7, and the detection platform 1 walks also tow device frame 11 and walk, through the setting of universal ball joint 10, the detection platform 1 and device frame 11 between can with the bending and undulating of track carry out adaptive rotation, with the device of advancing, camera 42, laser sensor 43 respectively through visual detection means and laser measurement means detect whether the track has the fracture, deformation condition, through the lighting lamp 44 can provide lighting for visual detection, and visual detection and laser measurement are all conventional detection means in prior art, and the structure and principle will not be repeated, the device is provided with the automatic ultrasonic detection assembly of automatic coating coupling agent and having coupling agent recovery function except visual detection and laser measurement, under the elastic force of spring telescopic link 19, smearing wheel 25, cleaning brush 28, ultrasonic probe 30, recovery suction cover 33 can all keep contact with the track, when working, control micro -peristaltic pump 16, motor 27, ultrasonic probe 30, ultrasonic generator 31, negative pressure pump 37 operation, and the operation of motor 27 drives cleaning brush 28 to rotate, with the advancing of automatic ultrasonic detection assembly 8, cleaning brush 28 first polish and clean the rusted part dust etc. on the track top, provide a relatively smooth track surface for ultrasonic detection, and the operation of micro -peristaltic pump 16 will deliver coupling agent in storage tank 13 through corrosion -resistant hose 17 to containing pipe 23, utilize the output strip groove 24 of containing pipe 23 bottom even output to smearing wheel 25, with the rolling of smearing wheel 25 on the track, cooperate the setting of containing groove 26 on smearing wheel 25, can even smearing coupling agent on the track, then ultrasonic probe 30 and the part of the track that smearing coupling agent contacted, through ultrasonic generator 31 and ultrasonic probe 30 cooperation, carry out ultrasonic detection to the track, thereby detect whether the internal injury of rail appears, then recovery suction cover 33 moves to the detected part, through the shovel plate of recovery suction cover 33 bottom shovel coupling agent on the track into recovery suction cover 33 inside, through negative pressure pump 37 carries out negative pressure suction, and coupling agent in recovery suction cover 33 inside is sucked into negative pressure suction pipe 34, after filtering through the filter screen 36 of filter bin 35 inside, through backflow pipe 38 input storage tank 13 and reuse, avoid the safety hidden danger of coupling agent residue to the operation of subsequent subway train simultaneously, in conclusion, the device has the automatic ultrasonic detection function to the rail, and has the storage, automatic delivery, coating and automatic recovery reuse function of coupling agent for ultrasonic detection, improve the uniformity of coupling agent smearing, also can automatically recycle coupling agent repeatedly, save the cost, also reduce the risk of train wheel skidding etc. of subsequent train wheel that appears because of coupling agent a large number of residues on the track,Enhanced security

[0059] The application does not relate to improvements of software and methods, which are related to circuits and electronic components and modules, which are state of the art and can be implemented by a person skilled in the art without further ado.

[0060] It is to be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not limited to those elements, but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses.

[0061] The principles and implementation modes of the present application are described by using specific examples in the present text. The above examples are only used to help understand the method of the present application and its core idea. The above description is only the preferred implementation mode of the present application. It should be pointed out that due to the limited expression, there are objectively infinite specific structures. For ordinary skilled persons in the technical field, some improvements, refinements, or changes can be made without departing from the principle of the present application. The above technical features can also be combined in an appropriate manner. These improvements, refinements, changes, or combinations, or the direct application of the concept and technical solution of the present application to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A subway rail inspection apparatus, characterized by: The utility model provides an automatic ultrasonic detection device, including the one end of detection platform (1) is connected with automatic ultrasonic detection component (8), automatic ultrasonic detection component (8) includes device frame (11), and the bottom of detection platform (1) and device frame (11) is equipped with walking mechanism, the top of device frame (11) is equipped with coupling agent storage output device, both sides of device frame (11) are equipped with three fixed seat (18), the bottom of fixed seat (18) is connected with spring telescopic link (19), and the bottom of three fixed seat (18) spring telescopic link (19) is fixedly installed respectively with first fixed plate (20), second fixed plate (29), third fixed plate (32), the bottom of first fixed plate (20) is equipped with smearing wheel mounting cover (21), the top of smearing wheel mounting cover (21) is equipped with the soft pipe interface (22) of the bar through and installs, the bottom of soft pipe interface (22) is connected with containing pipe (23), the inside of smearing wheel mounting cover (21) is rotatably installed with smearing wheel (25), the top of first fixed plate (20) is also equipped with motor (27), and the output end of motor (27) is connected with cleaning brush (28), the bottom of second fixed plate (29) is equipped with ultrasonic probe (30), the bottom of third fixed plate (32) is equipped with recovery suction cover (33), one end of recovery suction cover (33) is connected with negative pressure recovery filtering device, the bottom of detection platform (1) is equipped with laser vision detection module (39).

2. The subway rail detection device according to claim 1, characterized in that: The walking mechanism includes track wheel mounting bracket (2) installed at the bottom of detection platform (1) and device frame (11), wheel shaft (4) is rotatably installed on the inner side of track wheel mounting bracket (2), and track wheel (5) is connected to the tail end of wheel shaft (4), double-head motor (3) is installed in the inside of track wheel mounting bracket (2) under detection platform (1), and the output end of double-head motor (3) is connected with wheel shaft (4).

3. The subway rail detection device according to claim 1, characterized in that: One end of the device frame (11) is provided with a universal ball joint (10), one end of the universal ball joint (10) is connected with a docking socket (9), one end of the detection platform (1) is provided with a docking slot (6), the docking socket (9) and the docking slot (6) are insertedly connected, and the top and inner side of the docking slot (6) and the top and bottom of the docking socket (9) are provided with a bolt hole and are inserted with a bolt (7).

4. The subway rail inspection device of claim 1, wherein: The coupling agent storage output device includes a liquid tank support (12) and a micro peristaltic pump (16) installed on the top of the device frame (11), a corrosion-resistant hose (17) is connected between the soft pipe interface (22) and the liquid tank (13), the corrosion-resistant hose (17) passes through the micro peristaltic pump (16), the inner side of the liquid tank support (12) is fixedly installed with a liquid tank (13), the inside of the liquid tank (13) is provided with a liquid level sensor (14), the top of the liquid tank (13) is connected with a filling port, the top of the filling port is threadedly connected with a sealing cover, and the outer side of the liquid tank (13) is embeddedly installed with an electric heating sheet (15).

5. The subway rail inspection apparatus of claim 1, wherein: The bottom of the containing pipe (23) is provided with an output strip-shaped slot (24).

6. The subway rail inspection apparatus of claim 1, wherein: The outer side of the smearing wheel (25) is provided with a containing groove (26).

7. The subway rail inspection apparatus of claim 4, wherein: The negative pressure recovery filtering device comprises a negative pressure suction pipe (34) connected with a recovery suction cover (33), a filtering bin (35) is installed in the middle section of the negative pressure suction pipe (34), the inner side of the filtering bin (35) is provided with a plurality of layers of filter screens (36), one end of the negative pressure suction pipe (34) is connected with a negative pressure pump (37), the other end of the negative pressure pump (37) is connected with a backflow pipe (38), the other end of the backflow pipe (38) is connected with a liquid storage tank (13).

8. The subway rail inspection apparatus of claim 1, wherein: An ultrasonic wave generator (31) is installed on the top of the device frame (11), and the ultrasonic wave generator (31) and the ultrasonic wave probe (30) are electrically connected.

9. The subway rail inspection apparatus of claim 1, wherein: The laser visual detection module (39) comprises a second connecting rod (40) fixed with the detection platform (1), a mounting frame (41) is installed on the bottom of the second connecting rod (40), a camera (42) and a laser sensor (43) are installed on the inner side of the mounting frame (41), a lighting lamp (44) is installed on the bottom of the top plate of the mounting frame (41), and a storage battery (45) and a control module (46) are installed on the top of the detection platform (1).

Images