Track detection equipment

Abstract

The present invention provides a track detection device, which includes a vehicle body and a bearing mechanism. The vehicle body is a two-part structure, including two vehicle body units respectively located above two steel rails. Each vehicle body unit includes a two-dimensional camera and a plurality of line laser sensors. The bearing mechanism includes at least four bearing wheel assemblies for bearing the vehicle body and at least four pressing assemblies for limiting the vehicle body. Therefore, the vehicle body can remain stable during the movement along the track, and can also avoid the vehicle body from shifting and / or shaking when encountering track defects or gauge changes, so that the camera and the line laser sensors can collect data with higher accuracy. At the same time, since each vehicle body unit includes a variety of detection components, a two-dimensional image and profile data of the track can be obtained during the movement along the track, and the coverage range of the plurality of line laser sensors is larger. Therefore, the collected multi-source data can be applied to more track detection projects, further improving the efficiency of track detection.

Description

Technical Field

[0001] The present invention belongs to the technical field of track detection equipment, and particularly relates to a track detection equipment. Background Art

[0002] To ensure the safe operation of the track, various inspections of the track need to be carried out regularly. Taking the main line track as an example, problems such as rail spalling, wear, and rail surface deformation need to be detected and processed in a timely manner. In the past, manual inspection was mainly used, with very low efficiency. Moreover, due to the large number of items to be measured and the limited time for line stoppage inspection, it is often difficult to complete all the measurements within the limited time.

[0003] Therefore, to improve the inspection efficiency, a track inspection vehicle has emerged. It has multiple wheels and is equipped with inspection components, such as sensors, scanners, etc. It can obtain track data through one or more on-vehicle inspection components during the process of moving along the track, so as to inspect the track more efficiently.

[0004] However, the existing track inspection vehicles still have some deficiencies: Firstly, the on-vehicle inspection components are relatively single. For example, only one or two scanners are installed, and the track inspection items that can be covered are very limited. Many other items still need to be measured manually. Secondly, when there are some geometric defects or gauge changes in the track to be inspected, the existing track inspection vehicles will shift and shake, resulting in the relative position between the on-vehicle inspection components and the track shifting and / or shaking, which affects the accuracy of the obtained data. Some data has to be re-collected after adjusting the track inspection vehicle or even manually re-collected, which also affects the inspection efficiency. Summary of the Invention

[0005] The present invention is made to solve the above problems, and aims to provide a track detection equipment that can cover more track detection items and can also obtain accurate detection data when there are certain defects in the track or when encountering gauge changes. The present invention adopts the following technical solutions:

[0006] The present invention provides a track detection device, characterized in that it includes: a vehicle body; and a carrying mechanism arranged on the vehicle body, and the vehicle body is movably placed on two steel rails through the carrying mechanism. Among them, the vehicle body includes two vehicle body units, which are respectively located above the two steel rails. Each vehicle body unit includes: a two-dimensional camera for acquiring an image of the corresponding steel rail; and a plurality of line laser sensors arranged circumferentially along the corresponding steel rail and all facing the steel rail for acquiring the profile line of the steel rail. The carrying mechanism includes: at least four carrying wheel assemblies respectively arranged on the two vehicle body units and respectively corresponding to the two steel rails, so that the vehicle body is movably placed on the two steel rails; and at least four pressing assemblies respectively arranged on the two vehicle body units and respectively located beside each carrying wheel assembly for laterally limiting the vehicle body.

[0007] The track detection device provided by the present invention may further have the following technical feature: among them, the plurality of line laser sensors at least include: a first line laser sensor located outside the steel rail, and the profile line acquired by it covers the lower jaw part of the steel rail; and a third line laser sensor located above the inner side of the steel rail. The line laser planes projected by the first line laser sensor and the third line laser sensor are both coplanar with the same cross-section of the steel rail.

[0008] The track detection device provided by the present invention may further have the following technical feature: among them, the plurality of line laser sensors further include: a second line laser sensor located above the outer side of the corresponding steel rail; and a fourth line laser sensor located above the inner side of the steel rail and closer to the middle of the vehicle body than the third line laser sensor. The line laser planes projected by the first line laser sensor to the fourth line laser sensor are all coplanar with the same cross-section of the steel rail.

[0009] The track detection device provided by the present invention may further have the following technical feature: among them, each vehicle body unit further includes: a fifth line laser sensor located above the corresponding steel rail, and the line laser plane projected by it is perpendicular to the cross-section of the steel rail.

[0010] The track detection device provided by the present invention may further have the following technical feature: among them, the vehicle body unit further includes: a housing with an opening at the bottom, and the two-dimensional camera and the plurality of line laser sensors are all installed in the housing; and an illumination unit arranged in the housing for providing illumination for the shooting of the two-dimensional camera. Among them, the two-dimensional camera is horizontally installed on the top inside the housing, and the vehicle body unit further includes a refracting mirror, which is inclinedly installed in front of the lens of the two-dimensional camera and located above the corresponding steel rail.

[0011] The track detection device provided by the present invention may further have the following technical features: one end in the length direction of the housing is in the shape of a cuboid, serving as a connection end, and the other end opposite to the connection end is in a wedge shape. The housing includes a unit connection plate provided at the connection end. The connection ends of the two vehicle body units are combined facing each other. The two unit connection plates are stacked along their thickness directions and fixed by connecting members.

[0012] The track detection device provided by the present invention may further have the following technical features: in each vehicle body unit, the number of the two-dimensional cameras is more than two.

[0013] The load-bearing wheel assembly of the track detection device provided by the present invention includes: a load-bearing wheel bracket provided on the vehicle body; a load-bearing wheel rotating shaft rotatably connected to the load-bearing wheel bracket through a pair of bearings; and a load-bearing wheel connected to the load-bearing wheel rotating shaft. When the load-bearing wheel rolls along the rail, it drives the load-bearing wheel rotating shaft to rotate synchronously. At least one of the load-bearing wheel assemblies further includes a distance detection encoder provided inside the load-bearing wheel for obtaining corresponding mileage data when the load-bearing wheel rolls along the rail. <X

[0014] The pressing assembly of the track detection device provided by the present invention includes: a pressing bracket fixedly installed on the vehicle body unit; a wheel body bracket movably connected to the pressing bracket; a pressing wheel rotatably connected to the wheel body bracket; and an elastic member connected between the pressing bracket and the wheel body bracket, so that the pressing wheel presses against the inner side of the rail.

[0015] The pressing assembly of the track detection device provided by the present invention further includes a locking member for locking the relative position between the pressing wheel and the vehicle body. The locking member includes: a locking member provided on the pressing bracket and having a locking end; and a locking mating member provided on the wheel body bracket and having a locking hole matching the locking end.

[0016] Functions and effects of the invention

[0017] The track detection device according to the present invention includes a vehicle body and a supporting mechanism. The vehicle body is a two-part structure, including two vehicle body units respectively located above two rails. Each vehicle body unit includes a two-dimensional camera and multiple line laser sensors. The supporting mechanism includes at least four supporting wheel assemblies for supporting the vehicle body and at least four clamping assemblies for limiting the position of the vehicle body. Therefore, through the limiting effect of the four clamping assemblies, the vehicle body can remain stable during movement along the track, and can also effectively prevent the vehicle body from deflecting and / or shaking when encountering track defects or track gauge changes, thereby enabling the on-board camera and line laser sensor to collect data with higher accuracy. At the same time, since each vehicle body unit includes a two-dimensional camera and multiple line laser sensors, it can obtain two-dimensional images and profile data of the track during movement along the track, and multiple line laser sensors can cover a wider range. Therefore, the multi-dimensional data collected by the track detection device can be used for more track detection projects, further improving the efficiency of track detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of a track detection device in a first embodiment of the present invention;

[0019] Figure 2 is a perspective view of a vehicle body unit in a first embodiment of the present invention;

[0020] Figure 3 is a side view of a partial structure of a vehicle body unit in a first embodiment of the present invention;

[0021] Figure 4 is a three-dimensional diagram of a unit connection plate in embodiment 1 of the present invention;

[0022] Figure 5 Schematic diagram of the relative positions of the detection component and the rail in the first embodiment of the present invention;

[0023] Figure 6 yes Figure 1 Enlarged view of the portion within frame A.

[0024] Figure 7 is a perspective view of the load-bearing wheel assembly in the first embodiment of the present invention;

[0025] Figure 8 is a cross-sectional view of the load-bearing wheel assembly in the first embodiment of the present invention;

[0026] Figure 9 is a three-dimensional diagram of the load-bearing wheel in the first embodiment of the present invention;

[0027] Figure 10 is a side view of the compression assembly in the first embodiment of the present invention;

[0028] Figure 11It is a perspective view of the pressing component in Embodiment 1 of the present invention;

[0029] Figure 12 It is a perspective view of the mounting block in Embodiment 1 of the present invention;

[0030] Figure 13 It is a perspective view of the wheel body bracket in Embodiment 1 of the present invention;

[0031] Figure 14 It is a cross-sectional view of the wheel body bracket in Embodiment 1 of the present invention;

[0032] Figure 15 It is Figure 1 an enlarged view of the inner part of the middle frame B;

[0033] Figure 16 It is a perspective view of the computing device carrier in Embodiment 1 of the present invention;

[0034] Figure 17 It is a schematic diagram of the relative position between the fifth line laser sensor and the rail in Embodiment 2 of the present invention;

[0035] Figure 18 It is a schematic diagram of the relative position between the detection component and the track in Embodiment 3 of the present invention.

[0036] Reference numerals:

[0037] Track detection device 100; vehicle body 20; vehicle body unit 21; housing 211; inclined part of housing 2111; end of inclined part 2111a; unit connection plate 2112; unit connection hole 2112a; hole for wire and cable 2112b; relief hole 2112c; connection surface 21121; housing plate connection part 21122; connection end 2113; baffle 212; handle 213; reinforcing bracket 214; connecting bracket 215; camera assembly 216; two-dimensional camera 2161; refracting mirror 2162; first line laser sensor 217a; second line laser sensor 217b; third line laser sensor 217c; fourth line laser sensor 217d; fifth line laser sensor 217e; electronic control assembly 218; power supply mounting bracket 2181; power supply component 2182; electronic control mounting bracket 2183; carrying mechanism 30; carrying wheel assembly 31; carrying wheel bracket 311; carrying wheel connection end 3111; protective cover plate 3112; carrying wheel rotating shaft 312; carrying wheel 313; carrying wheel end face 3131; braking groove 3131a; carrying wheel rotating shaft hole 3132; encoder accommodating groove 3133; rotating shaft fitting groove 3134; bearing 314; braking component 315; pressing assembly 32; pressing bracket 321; mounting block 3211; locking mating hole 3211a; guide rod mounting hole 3211b; hole for locking part 3211c; connecting rod connection hole 3211d; guide rod 3212; guiding component 322; guide rail 3221; slider 3222; elastic member 323; wheel body bracket 324; bracket connection end 3241; wheel shaft connection hole 3241a; spring abutting groove 3241b; slider connection hole 3241c; locking connection hole 3241d; connecting rod mounting hole 3241e; wheel body connection end 3242; wheel body accommodating notch 3242a; rotating shaft connection hole 3242b; pressing wheel 326; locking part 327; locking mating part 3271; locking piece 3272; wrench component 328; first connecting rod 3281; second connecting rod 3282; pushing mechanism 40; push rod 41; cross bar 411; longitudinal rod 412; angle adjusting assembly 42; push rod connection seat 421; push rod rotating shaft hole 4211; angle adjusting hole 4212; angle locking part 422; push rod connecting part 423; clamp 424; third connecting rod 425; computing device mounting rack 43; mounting plate 431; supporting hook 432; rail 9; switch rail 8. Detailed implementation mode

[0038] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the track detection device of the present invention will be specifically described below in conjunction with embodiments and drawings.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] <Example 1>

[0041] Figure 1 It is a perspective view of the track detection device in this embodiment.

[0042] As Figure 1 shown, the track detection device 100 includes a vehicle body 20, a carrying mechanism 30, and a pushing mechanism 40. Among them, the vehicle body 20 is movably placed on two steel rails 9 through the carrying mechanism 30 at the bottom, and the pushing mechanism 40 is installed on the vehicle body 20 for the detection personnel to push the vehicle body 20.

[0043] The vehicle body 20 is a two-part structure, including two mirror-symmetrical vehicle body units 21.

[0044] Figure 2 It is a perspective view of the vehicle body unit in this embodiment.

[0045] Figure 3 It is a side view of a partial structure of the vehicle body unit in this embodiment. To show the internal structure, Figure 3 part of the housing is omitted.

[0046] As Figures 2 - 3 shown, each vehicle body unit 21 includes a housing 211, a baffle 212, a plurality of handles 213, a plurality of reinforcing brackets 214, a plurality of connecting brackets 215, a camera assembly 216, a lighting unit (not shown in the figure), a plurality of detection components, and an electronic control assembly 128.

[0047] The housing 211 is composed of multiple metal plates. One end of the housing 211 in the length direction is a connection end 2113. The connection end 2113 is in the shape of a cuboid and includes a unit connection plate 2112 with a thickness thicker than other parts of the housing 211.

[0048] Figure 4 It is a perspective view of the unit connection plate in this embodiment.

[0049] As Figure 4As shown, the unit connection plate 2112 is a rectangular parallelepiped plate, and the surface direction thereof is perpendicular to the length direction of the vehicle body unit 21. The connection plate 2112 has four unit connection holes 2112a penetrating in the thickness direction thereof, two cable holes 2112b, and a plurality of lightening holes 2112c. The four unit connection holes 2112a are circular holes of the same size, and are provided at the four corners of the connection plate 2112 for connecting two vehicle body units 21. The cable holes 2112b are square strip-shaped holes for cables to pass through. The lightening holes 2112c are square holes for reducing the structural weight.

[0050] One surface in the thickness direction of the unit connection plate 2112 is a connection surface 21121, and the connection surface 21121 is a flat surface. The edge portion of the other surface opposite to the connection surface 21121 further has a plurality of shell plate connection portions 21122, and circular through holes are provided in the shell plate connection portions 21122 for connecting other metal plates of the shell 211.

[0051] Therefore, remove one side plate of the shell 211, then fit the connection ends 2113 of the two vehicle body units 21 together face to face, so that the connection surfaces 21121 of the two unit connection plates 2112 are substantially in contact with each other, and then set fasteners (screws and nuts) in the four groups of unit connection holes 2112a to tightly connect the two vehicle body units 21. Finally, install the side plate, and the integral vehicle body 20 can be assembled. After the vehicle body 20 is formed, the cable holes 2112b on the two unit connection plates 2112 are communicated, which is convenient for connecting cables and the like in the two vehicle body units 21, and the cable holes 2112b are strip-shaped, which can also play a certain role in limiting and protecting the cables.

[0052] Two substantially square openings are provided on one side plate of the shell 211, and two baffle plates 212 are respectively detachably installed at the two openings.

[0053] A plurality of handles 213 are respectively installed on the outer surface of the shell 211 for installers or inspectors to hold, so as to facilitate the assembly of the vehicle body or the placement of the track detection device 100 on the track. In this embodiment, each vehicle body unit 20 is provided with three handles 213, one of which is installed on the top of the shell 211 and close to the unit connection plate 2113, and the other two handles 213 are installed on both sides of the inclined end portion 2111a of the shell 211.

[0054] As Figure 3 shown, a plurality of reinforcing brackets 214 are all in an X shape, and the end portions of the X shape are respectively connected to two opposite metal plates of the shell 211 for strengthening the overall strength of the vehicle body unit 21. The reinforcing brackets 214 also have a plurality of strip-shaped lightening holes.

[0055] A plurality of connecting brackets 215 are installed inside the shell 211 for installing various detection components.

[0056] Figure 5 It is a schematic diagram of the relative position between the detection component and the rail in this embodiment.

[0057] As Figure 5 shown, in this embodiment, the detection component includes a camera assembly 216, a first line laser sensor 217a, and a second line laser sensor 217b, all of which are installed in the housing 211. There is an opening below the housing 211 (on the side facing the rail 9). The camera and the line laser sensor can directly photograph / detect the rail 9 below through this opening.

[0058] The camera assembly 216 includes a two-dimensional camera 2161 and a refractive mirror 2162.

[0059] The two-dimensional camera 2161 is horizontally installed at the top inside the housing 211 through a connecting bracket 215. The refractive mirror 2162 is obliquely installed at the top inside the housing 211 through a connecting bracket 215 and is located in front of the lens of the two-dimensional camera 2161. The inclination angle of the refractive mirror 2162 relative to the top surface of the housing 211 is approximately 45 degrees. When the track detection device 100 is placed on the rail 9, the refractive mirror 2162 is approximately directly above the corresponding side of the rail 9. The two-dimensional camera 2161 can obtain a two-dimensional image of the rail 9 through refraction.

[0060] The lighting unit is installed at the top inside the housing 211 to provide sufficient lighting for the photographing of the two-dimensional camera 2161. At the same time, the housing 211 can effectively block external light sources and reduce the influence caused by changes in external light sources during the photographing of the two-dimensional camera 2161, thereby ensuring the photographing quality of the two-dimensional image. In this embodiment, the lighting unit includes multiple light bars, which are installed at the top inside the housing 211 substantially parallel to each other.

[0061] The first line laser sensor 217a is installed in the housing 211 through a connecting bracket 215 and is located inside the inclined end portion 2111a of the housing 211. The first line laser sensor 217a is horizontally installed. When the track detection device 100 is placed on the rail 9, the first line laser sensor 217a is located outside the rail 9, slightly higher than the rail 9 and facing the rail 9. The line laser projected by it covers a part of the outer surface of the rail 9 and can obtain corresponding profile data, including the lower jaw part on the non-functional side of the rail 9. This lower jaw part is basically not worn and has an easily recognizable corner, so it can be used as a reference position for profile detection.

[0062] The third line laser sensor 217 is obliquely installed at the top inside the housing 211 through the connecting bracket 215, and is closer to the middle of the vehicle body 20 than the camera assembly 216. When the track detection device 100 is placed on the rail 9, the third line laser sensor 217 is located above the inner side of the rail 9 and faces the rail 9, and the line laser projected by it covers the upper surface and part of the inner surface of the rail 9, and can obtain the corresponding profile data.

[0063] Along the width direction of the vehicle body 20, the first line laser sensor 217a and the third line laser sensor 217 are both installed in the middle of the top inside the housing 211, and the line laser planes projected by them are coplanar, and can obtain the profile data of the same cross section of the rail 9. In this embodiment, the two line laser sensors have the same model.

[0064] The electronic control component 218 is used to supply power to the camera and sensors and perform corresponding control on them. The power supply mounting bracket 2181, the power supply component 2182, and the electronic control mounting bracket 2183 are shown in the figure. The electronic control component also includes a data collector, connection cables, etc., which are prior arts and will not be elaborated here.

[0065] The power supply mounting bracket 2181 is a square cylindrical metal frame, which is installed inside the housing 211 and at an opening of the side plate. Therefore, by removing the corresponding baffle 212, one end of the power supply mounting bracket 2181 can be exposed, and the power supply component 2182 can be conveniently inspected and replaced.

[0066] The electronic control mounting bracket 2183 is a metal frame, which is installed inside the housing 211 and at another opening of the side plate. Therefore, by removing the corresponding baffle 212, one side of the electronic control mounting bracket 2183 can be exposed, and the electronic control components, cables, etc. installed or placed on the electronic control mounting bracket 2183 can be conveniently inspected and replaced.

[0067] Figure 6 is Figure 1 An enlarged view of the inner part of the middle frame A shows a load wheel assembly and a pressing assembly beside it. Some conventional connecting parts with smaller sizes (such as small-sized screws, etc.) are not shown in the figure. The same applies to the following figures.

[0068] As Figure 1 and Figure 6 shown, the bearing mechanism 30 includes four load wheel assemblies 31 and four pressing assemblies 32. The four load wheel assemblies 31 are respectively installed at the lower parts on both sides in the width direction of the vehicle body 20, and are installed in pairs at positions close to one end in the length direction of the vehicle body 20, corresponding to the two rails 9 respectively. The four pressing assemblies 32 are also installed at the lower parts on both sides in the width direction of the vehicle body 20, and are respectively located beside the four load wheel assemblies 31.

[0069] As Figure 1As shown, the track detection device 100 is movably placed on two rails 9 via four load-bearing wheel assemblies 31 . At this time, the four clamping assemblies 32 are respectively located on the inner side of the rails 9 on the corresponding side.

[0070] Figure 7 、 Figure 8 They are respectively a stereoscopic view and a cross-sectional view of the load-bearing wheel assembly in this embodiment.

[0071] like Figure 7 、 Figure 8 As shown, the load-bearing wheel assembly 31 includes a load-bearing wheel bracket 311 , a load-bearing wheel shaft 312 , a load-bearing wheel 313 , a bearing 314 and a brake component 315 .

[0072] The load-bearing wheel bracket 311 is composed of an I-shaped member connected to a U-shaped member. One end of the I-shaped member is fixed to the housing 211. The two arms of the U-shaped member serve as load-bearing wheel connection ends 3111. Circular through-holes are formed in each of these two load-bearing wheel connection ends 3111. A circular protective cover 3112 is mounted outside the through-holes.

[0073] The load-wheel shaft 312 comprises a cylindrical shaft and two pins, which are located near one end of the shaft and perpendicular to it. The ends of the shaft are mounted via bearings 314 in the through-holes of the two load-wheel connecting ends 3111, allowing the load-wheel shaft 312 to rotate relative to the load-wheel bracket 311.

[0074] The load wheel 313 is mounted on the load wheel shaft 312 and is restrained by two bearings 314. In this embodiment, the load wheel 313 is made of an insulating material, preferably ceramic or POM plastic, and has an insulation resistance of no less than 1MΩ to prevent the detection device 100 from connecting the two rails and energizing them, thereby preventing interference with the track's electrical system.

[0075] Figure 9 3D is a perspective view of the load-bearing wheel in this embodiment.

[0076] like Figures 8 - 9 As shown, the load wheel 313 is generally cylindrical in shape, with one end being truncated cone-shaped. The diameter of this end gradually decreases from the middle to the end of the load wheel 313. The end surface of this end is referred to as the outer end surface 3131. The load wheel 313 has a load wheel shaft hole 3132, two shaft engagement grooves 3134, and an encoder accommodating groove 3133.

[0077] The bearing wheel rotating shaft hole 3132 is a cylindrical hole, coaxial with the bearing wheel 313, and its size matches that of the bearing wheel rotating shaft 312. The rotating shaft fitting grooves 3134 are formed on both sides in the radial direction of the bearing wheel rotating shaft hole 3132 and communicate with the rotating shaft hole 3132. The notch of the groove is located on the outer end face 3131, and the depth of the groove is less than the length of the bearing wheel rotating shaft hole 3132. The bearing wheel 313 is sleeved on the bearing wheel rotating shaft 312 through the bearing wheel rotating shaft hole 3132, and a pair of pin columns of the bearing wheel rotating shaft 312 are fitted in the two rotating shaft fitting grooves 3134. Therefore, when the detection device 100 moves on the rail 9, the bearing wheel 313 rolls along the rail 9, driving the bearing wheel rotating shaft 312 to rotate synchronously.

[0078] The encoder accommodating groove 3133 includes a connected cylindrical groove and a frustum-shaped groove, and communicates with the bearing wheel rotating shaft hole 3132. The encoder accommodating groove 3134 is also coaxial with the bearing wheel 313. The notch of the encoder accommodating groove 3133 is located at the other end face of the bearing wheel 313. In this embodiment, distance detection encoders 317 are installed in two of the bearing wheels 313 for obtaining the mileage data of the detection device 100 moving along the rail 9. The main body part of the distance detection encoder 317 is generally cylindrical, fixed on the bearing wheel bracket 311, and rotatably connected to the bearing wheel rotating shaft 312. The distance detection encoder 317 is accommodated in the encoder accommodating groove 3133. The depth of the encoder accommodating groove 3133 is greater than the axial length of the distance detection encoder 317, and the diameter of the cylindrical groove part thereof is greater than the diameter of the distance detection encoder 317, so that the distance detection encoder 317 does not directly contact the bearing wheel 313, and the rotation of the bearing wheel 313 can be prevented from being affected due to friction.

[0079] In addition, there are four braking grooves 3131a on the outer end face 3131 of the bearing wheel 313, all of which are cylindrical grooves with the same size and are evenly distributed along the circumference of the outer end face 3131. The distances from each braking groove 3131a to the central axis of the bearing wheel 313 are the same, and are used to cooperate with the braking component 315 for braking. In this embodiment, the braking component 315 is a spring pin (indexing pin), installed on the bearing wheel connection end 3111, and the distance from the end of the pin column thereof to the central axis of the bearing wheel 313 is basically the same as the distance from the braking groove 3131a to the central axis of the bearing wheel 313. Therefore, when pressing the button of the braking component 315, the spring inside it drives its pin column to extend or retract. When the pin column extends, if one of the braking grooves 3131a is approximately located at the position of the pin column, the pin column is inserted into the braking groove 3131a to lock the bearing wheel 313.

[0080] In addition, the length of the cylindrical section of the bearing wheel 313 is relatively long, that is, the contact area between the bearing wheel 313 and the rail surface is relatively large. Therefore, even if there are some defects such as chips on the rail surface, it basically does not affect the rolling of the bearing wheel 313.

[0081] Figure 10 、 Figure 11 are respectively the side view and the three - dimensional view of the pressing component in this embodiment.

[0082] As Figure 6 and Figures 10 - 11 shown, the pressing component 32 includes a pressing bracket 321, a guiding component 322, an elastic member 323, a wheel body bracket 324, a pressing wheel rotating shaft (not shown in the figure), a pressing wheel 326, a locking component 327, and a wrench component 328.

[0083] The pressing bracket 321 includes a mounting block 3211 and a guiding rod 3212.

[0084] Figure 12 is the three - dimensional view of the mounting block in this embodiment.

[0085] As Figure 12 shown, the mounting block 3211 is generally rectangular parallelepiped - shaped, and one side of it is fixedly mounted on the housing 211. The mounting block 3211 has a locking cooperation hole 3211a penetrating along its thickness direction, a guiding rod mounting hole 3211b, a locking member hole 3211c opened at one end in its length direction and communicating with the locking cooperation hole 3211a, and a connecting rod connection hole 3211d opened at one end in its width direction. The locking cooperation hole 3211a is a square through - hole. The guiding rod mounting hole 3211b is a circular counterbore. The connecting rod connection hole 3211d is a circular through - hole.

[0086] The guiding rod 3212 is a cylindrical rod, one end of which is connected in the guiding rod mounting hole 3211b of the mounting block 3211, and the other end is connected to the I - shaped member of the carrier wheel bracket 311. The extending direction of the guiding rod 3212 is the same as the length direction of the vehicle body 20. When the detection device 100 is placed on the rail 9, the extending direction of the guiding rod 3212 is perpendicular to the extending direction of the rail.

[0087] The guiding component 322 includes a guide rail 3221 and a slider 3222. The guide rail 3221 is fixedly mounted on the housing 211, and its extending direction is the same as that of the guiding rod 3212. The slider 3222 is slidably mounted on the guide rail 3221.

[0088] Figure 13 、 Figure 14 are respectively the three - dimensional view and the cross - sectional view of the wheel body bracket in this embodiment.

[0089] As Figures 13 - 14 shown, the wheel body bracket 324 includes a bracket connection part 3241 and a wheel body connection part 3242, both of which are generally rectangular parallelepiped - shaped.

[0090] The bracket connecting portion 3241 has a circular guide rod connecting hole 3241a penetrating along its length direction, a spring abutting groove 3241b, four slider connecting holes 3241c penetrating along its thickness direction, and three locking connecting holes 3241d provided on the end face far from the wheel body connecting portion 3242. There is also an annular protrusion on one end face in the thickness direction, forming a connecting rod mounting hole 3241e.

[0091] The bracket connecting portion 3241 is sleeved on the guide rod 3212 through the guide rod connecting hole 3241a, and is fixedly connected with the slider 3222 through the slider connecting hole 3241c. The elastic member 323 is a spring, which is also sleeved on the guide rod 3212, and one end of the spring abuts against the mounting block 3211, and the other end abuts against the bottom of the spring abutting groove 3241b.

[0092] One end of the wheel body connecting portion 3242 has a wheel body accommodating notch 3242a and two rotating shaft connecting holes 3242b. The wheel body accommodating notch 3242a is a special-shaped notch, which can be generally regarded as composed of a connected rectangular notch and a trapezoidal notch. The wheel body accommodating notch 3242a opens toward one side in the width direction of the wheel body connecting portion 3242. The rotating shaft connecting holes 3242b are circular holes, and are all communicated with the wheel body accommodating notch 3242a.

[0093] The pressing wheel rotating shaft is cylindrical, and both ends are respectively installed at the two rotating shaft connecting holes 3242b.

[0094] The pressing wheel 326 is rotatably installed on the pressing wheel rotating shaft through the rotating shaft hole in the middle thereof, and is partially embedded in the wheel body accommodating notch 3242a. Along the central axis direction of the pressing wheel 326, its diameter gradually becomes larger and then gradually becomes smaller, the diameter in the middle of its axis is the largest, and there is a part with the same diameter (cylindrical section). In this embodiment, the pressing wheel 326 is made of an insulating material, and its material is the same as that of the carrying wheel 313.

[0095] In addition, the size and installation position of the carrying wheel assembly 31, the installation position of the pressing bracket 321, and the length of the wheel body bracket 324 make the pressing wheel 326 approximately located 16 cm below the rail surface of the rail 9. Near this position, the inner side of the rail head of the rail 9 is straight, and the pressing wheel 326 presses toward this position, which is more stable.

[0096] Therefore, under the action of the spring force of the elastic member 323, the wheel body bracket 324 and the pressing wheel 326 thereon can be pressed toward the inner side of the rail 9, so that the pressing wheel 326 is closely attached to the flat part on the side surface of the rail head of the rail 9.

[0097] The locking member 327 includes a locking mating member 3271 and a locking member 3272.

[0098] In this embodiment, the locking member 3272 is a locking screw, which is installed at the locking member hole 3211c of the mounting block 3211, and the screw end thereof can move along this hole.

[0099] The locking and mating member 3271 is in the shape of a strip plate, and a plurality of circular holes are formed along its length direction. One end of the locking and mating member 3271 is installed at the locking connection hole 3241d of the bracket connection portion 3241 through three circular holes, and the other end passes through the locking mating hole 3211a on the mounting block 3211 and can move along this hole. When the screw end of the locking member 3272 extends downward, the screw end passes through the locking member hole 3211c to reach the locking mating hole 3211a, and penetrates into the circular hole on this end of the locking and mating member 3271, thereby fixing (locking) the relative positions of the wheel body bracket 324 and the mounting block 3211.

[0100] In this embodiment, among the two pressing assemblies 32 corresponding to one of the steel rails 9, the locking member 3272 is in an unlocked state, and its elastic member 323 can move freely; among the two pressing assemblies 32 on the other side, the locking member 3272 is in a locked state, and the positions of the wheel body bracket 324 and the mounting block 3211 are fixed, that is, the position of its pressing wheel 326 relative to the vehicle body 20 is fixed. That is to say, in this embodiment, the two pressing assemblies 32 on one side are in the form of fixed side wheels, and the two on the other side are in the form of spring side wheels.

[0101] Therefore, when the gauge of the two steel rails 9 changes, the elastic members 323 of the two pressing assemblies 32 (spring side wheels) in the unlocked state push their pressing wheels 326 and the vehicle body 20 to generate relative displacement until the pressing wheels 326 on both sides re-press the corresponding steel rails again, so that the detection device 100 can be applied to the gauge change section. And on the side of the two fixed side wheels, since the relative positions of the pressing wheel 326 and the vehicle body 20 do not change, after re-pressing, the relative positions of the multiple detection components of the vehicle body unit 21 on this side and the steel rail 9 also do not change.

[0102] The wrench component 328 is used for the detection personnel to adjust the relative positions of the wheel body bracket 324 and the mounting block 3211, that is, to adjust the relative position of the pressing wheel 326 relative to the vehicle body 20, so as to more conveniently place the detection device 100 on the steel rail. In addition, when locking the pressing assembly 32, the relative positions of the screw end of the locking member 3272 and the locking hole on the locking and mating member 3271 can also be conveniently adjusted through the wrench component 328, so as to more conveniently perform locking. The wrench component 328 includes a first connecting rod 3281 and a second connecting rod 3282.

[0103] One end of the first connecting rod 3281 is rotatably mounted in the connecting rod connection hole 3211d on the mounting block 3211, while the other end is free for the inspector to grasp and operate. One end of the second connecting rod 3282 is rotatably mounted in the connecting rod mounting hole 3241e of the wheel bracket 324, while the other end is rotatably mounted in the middle of the first connecting rod 3281. Therefore, by grasping the free end of the first connecting rod 3281 and rotating it clockwise in the figure, the inspector can shorten the distance between the wheel bracket 324 and the mounting block 3211.

[0104] Furthermore, in this embodiment, two load-bearing wheel assemblies 31 and two clamping assemblies 32 are pre-installed on a vehicle body unit 21, which is transported as a whole. Two legs are also installed below the connection end 2113 of the vehicle body unit 21 to maintain stability during transportation. In other words, the track inspection device 100 of this embodiment is simply transported in two parts. Once transported to the inspection site, the two parts only need to be securely connected for inspection.

[0105] The pushing mechanism 40 includes a push rod 41 , an angle adjustment component 42 and a notebook stand.

[0106] The push rod 41 is composed of multiple cylindrical rods, mainly including a horizontal rod 411 and a vertical rod 412. The horizontal rod 411 is installed at one end of the vertical rod 412 for the inspection personnel to hold the cart, and the other end of the vertical rod 412 is installed on the cart body 20 through the angle adjustment component 42.

[0107] The angle adjustment assembly 42 is used to adjust the angle of the push rod 41 relative to the vehicle body 20 .

[0108] Figure 15 yes Figure 1 The enlarged view of the inner part of the middle frame B shows the structure of the push rod.

[0109] like Figure 15 As shown, the angle adjustment assembly 42 includes a push rod connecting seat 421 , an angle locking member 422 , a push rod connecting member 423 , a clamp 424 and a third connecting rod 425 .

[0110] The push rod connecting seat 421 is installed on the lower part of one side of the shell 211. It is a T-shaped piece. One end of the push rod connecting seat has a push rod shaft hole 4211 and four angle adjustment holes 4212. All of them are circular through holes, and the four angle adjustment holes 4212 are arranged circumferentially along the push rod shaft hole 4211.

[0111] The angle locking piece 422 is a spring pin. A shaft hole and a positioning hole are opened at one end of the longitudinal rod 412. The longitudinal rod 412 is rotatably mounted on the push rod connecting seat 421. The angle locking piece 422 passes through its positioning hole and one of the angle adjustment holes 4212 to fix the longitudinal rod 412 at a certain angle.

[0112] The push rod connecting member 423 is installed on the upper part of one side of the housing 211 and is located above the push rod connecting seat 421. The clamp 424 is sleeved on the middle part of the longitudinal rod 412. One end of the third connecting rod 425 is rotatably installed on the clamp 424, and the other end is rotatably installed on the push rod connecting member 423. Therefore, after locking the angle of the longitudinal rod 412 through the angle locking member 422, the position of the clamp 424 can be adjusted to stably fix the push rod 41.

[0113] Figure 16 It is a perspective view of the computing device carrier in this embodiment.

[0114] As Figure 16 shown, in this embodiment, the computing device carrier 43 is a laptop stand, which is detachably and obliquely installed on the cross bar 411 of the push rod 41. It includes a carrier plate 431 in the shape of a special-shaped plate and two supporting hooks 432 formed at one end of the carrier plate 431. The laptop can be placed on the carrier plate 431, and one end is hooked by the two supporting hooks 432, so as to remain stable during the movement process. The laptop is communicatively connected to the electric control devices such as the data collector in the vehicle body 20, and can be used to obtain the status information or real-time data of the detection components, etc., which is convenient for the detection personnel to monitor the working status of the detection components in the vehicle body 20.

[0115] In this embodiment, the parts not described in detail are well-known technologies in the art.

[0116] Functions and effects of Embodiment 1

[0117] According to the track detection device 100 provided in this embodiment, it includes a vehicle body 20 and a bearing mechanism 30. The vehicle body 20 is a split structure, including two vehicle body units 21 respectively located above two steel rails. Each vehicle body unit 21 includes a two-dimensional camera 2161 and a plurality of line laser sensors. The bearing mechanism 30 includes four bearing wheel assemblies 31 for bearing the vehicle body 20 and four pressing assemblies 32 for limiting the vehicle body 20. Therefore, through the limiting action of the four pressing assemblies 32, the vehicle body 20 can remain stable during the movement along the track, and can effectively avoid the vehicle body 20 from shifting and / or shaking when encountering track defects or gauge changes, so that the on-vehicle camera 215 and the two line laser sensors can collect higher-precision data. At the same time, since each vehicle body unit 21 includes a two-dimensional camera 2161 and a plurality of line laser sensors, it can obtain the two-dimensional image and profile data of the track during the movement along the track, and the range that the plurality of line laser sensors can cover is larger. Therefore, the multi-source data collected by the track detection device 100 can be used for more track detection items, further improving the efficiency of track detection.

[0118] In the first embodiment, the detection component includes a two-dimensional camera 2161, a first line laser sensor 217a, and a third line laser sensor 217c, which can obtain the two-dimensional image and three-dimensional profile data of the track. Based on these data, various items such as rail surface defects, track profile defects, and track spacing of the track can be detected. In particular, the first line laser sensor 217a is arranged substantially horizontally outside the rail, and the profile data it obtains includes the jaw part on the non-functional side of the rail. This jaw part will not be worn due to the operation of the train and has an easily recognizable corner. Therefore, by collecting the profile data of this part and using it as a reference, the relevant detection of the track profile can be carried out more accurately.

[0119] Furthermore, the two-dimensional camera 2161 is horizontally installed at the top inside the housing 211 and takes images of the rail under the vehicle body 20 through a refractive mirror. Since the two-dimensional camera 2161 and its lens for track detection are relatively large in size and the overall length is long, the horizontal installation method is more stable and can also prevent the two-dimensional camera 2161 from blocking other detection components.

[0120] In the first embodiment, the vehicle body 20 is assembled by two vehicle body units 21. One end of the two vehicle body units 21 in the shape of a cuboid is joined face to face, and fasteners are installed to tightly connect the two unit connection plates 2112 that are in contact, and then the vehicle body 20 can be combined. Therefore, the vehicle body 20 is easy to disassemble and assemble. Disassembling it into two vehicle body units 21 with smaller sizes can make transportation more convenient; after the two vehicle body units 21 are transported to the detection site, they are also easy to assemble on site. In addition, since the vehicle body 20 is directly assembled only by two vehicle body units 21 and does not include other connecting frames, etc., the overall weight of the vehicle body 20 is also relatively light, which is also more conducive to transportation.

[0121] In the first embodiment, distance detection encoders 317 are installed inside two of the load wheels 313, which can obtain corresponding mileage data as the load wheels 313 roll when the track detection device 100 moves along the rail, so that the detection data can be corresponding to the track position. Since the load wheels 313 are relatively wide and have a large contact area with the rail, even if there are some defects such as chunks falling off on the rail, it basically does not affect the rolling of the load wheels 313, and more accurate mileage data can be obtained.

[0122] Furthermore, the load wheel assembly 31 further includes a braking component 315, which can cooperate with the braking groove 3131a on the end face of the load wheel 313 to lock the load wheel 313. Therefore, during the detection process, if it is necessary to pause the movement for data verification, etc., the track detection device 100 can be conveniently stopped in place, and it can be avoided that the track detection device 100 slides along the track and affects the accuracy of the obtained mileage data.

[0123] In the first embodiment, the pressing assembly 32 can press the pressing wheel 326 against the inner side of the rail head of one side rail through its elastic member 323. Therefore, through the four pressing assemblies 32, the vehicle body 20 can be laterally limited, enabling it to move stably along the two main line rails 9, effectively preventing the vehicle body 20 from shifting and swaying during movement, thereby ensuring that the detection components can obtain accurate track data and expanding the applicable range of the track detection device 100.

[0124] Furthermore, the pressing assembly 32 further includes a locking member 327, which can lock the relative position between its pressing wheel 326 and the vehicle body 20. In the first embodiment, by adjusting the locking member 327, the two pressing assemblies 32 at one side rail are set in the form of fixed side wheels, and the other two pressing assemblies 32 are set in the form of spring side wheels. In this way, in the gauge change section, the two spring side wheels push the vehicle body 20 towards the other side until all four pressing wheels 326 are re-pressed against the inner side of the rail head of the corresponding side rail, enabling the track detection device 100 to adapt to the gauge change section of the track. In particular, on one side of the two fixed side wheels, since the relative position between the pressing wheel 326 and the vehicle body 20 does not change, after re-pressing, the relative positions between the multiple detection components of the vehicle body unit 21 on this side and the rail also do not change, thus ensuring the accuracy of the obtained track data.

[0125] In the first embodiment, the push rod 41 is installed on the vehicle body 20 through the angle adjustment assembly 42, and the angle of the push rod 41 relative to the vehicle body 20 can be conveniently adjusted through the spring pin, enabling the detection personnel to more conveniently and comfortably push the detection device 100.

[0126] Furthermore, a computing device carrier 43 is also installed on the cross bar 411 of the push rod 41, which can conveniently place relatively light computing devices such as laptops, facilitating the detection personnel to view the operation status of the detection components and the track data obtained by them in real time.

[0127] <Second Embodiment>

[0128] Figure 16 It is a schematic diagram of the relative position between the fifth-line laser sensor and the rail in this embodiment.

[0129] As Figure 16 shown, compared with the first embodiment, in the track detection device 100 of this embodiment, the vehicle body unit 21 further includes a fifth-line laser sensor 217e, which is also installed on the inner top of the housing 211 through the connecting bracket 215 and is installed perpendicular to the other several line laser sensors. When the track detection device 100 is placed on the rail 9, the fifth-line laser sensor 217e is located directly above the rail 9, and the line laser plane projected by it is perpendicular to the cross section of the rail 9, and the end face line of the upper surface of the rail 9 can be obtained.

[0130] Therefore, with the track detection device 100 of this embodiment, not only can the rail surface and profile of the rail be detected, but also specific defects (such as corrugation) on the rail surface can be better detected, and the size of the rail gap between two adjacent rails can be detected, etc. That is, the track detection device 100 can further cover more detection items.

[0131] In this embodiment, other structures and functions are the same as those in the first embodiment, and will not be repeated.

[0132] <Embodiment Three>

[0133] Figure 17 It is a schematic diagram of the relative position between the detection component and the track in this embodiment.

[0134] As Figure 17 shown, compared with the first embodiment, a second line laser sensor 217b and a fourth line laser sensor 217e are also installed in the housing 211 of the vehicle body unit 21 in this embodiment, that is, there are a total of four line laser sensors. In this embodiment, the four line laser sensors have the same model.

[0135] The second line laser sensor 217b and the fourth line laser sensor 217e are also inclinedly installed at the top inside the housing 211 through the connecting bracket 215. And relative to the third line laser sensor 217c, the second line laser sensor 217b is closer to one end in the length direction of the vehicle body 20, and the fourth line laser sensor 217e is closer to the middle of the vehicle body 20. When the track detection device 100 is placed on two rails 9, the four line laser sensors are circumferentially arranged along the corresponding side of the rail 9. Among them, the second line laser sensor 217b is located above the outside of the rail 9 and faces the rail 9, and the fourth line laser sensor 217e is located above the inside of the rail 9 and faces the inside of the rail 9. The line laser planes projected by the four line laser sensors are all coplanar, that is, coplanar with the same cross-section of the rail.

[0136] As Figure 17 shown, there is an overlapping part in the profile data obtained by two adjacent line laser sensors.

[0137] In addition, the four line laser sensors can not only cover the rail 9, but also cover the track components on both sides of the rail 9 (the basic rail at the turnout) at the turnout of the track.

[0138] Taking the switch rail at the turnout as an example, as Figure 17As shown, the switch rail 8 is located inside the rail 9. Along the extending direction of the rail 9, the switch rail 8 gradually changes from being substantially in contact with the rail 9 to being repelled from the rail 9, that is, the distance between the switch rail 8 and the rail 9 gradually increases. It can be seen that when the rail 9 and the switch rail 8 are in a contacting state, the line laser projected by the third-line laser sensor 217c can cover the upper end surface and part of the inner surface of the switch rail 8; when the rail 9 and the switch rail 8 are in a repelled state, the line laser projected by the fourth-line laser sensor 217d can cover the upper end surface and part of the inner surface of the switch rail 8.

[0139] The above has been described by taking the switch rail as an example. There are also various other track components at the turnout, such as guard rails, wing rails, etc. It can be understood that the line laser projected by the third-line laser sensor 217c and / or the fourth-line laser sensor 217d can also cover or partially cover other types of track components located inside the rail 9 (and close to the rail 9), and the first-line laser sensor 217a and / or the second-line laser sensor 217b can also cover or partially cover other types of track components located outside the rail 9 (and close to the rail 9). Therefore, the track detection device 100 of this embodiment can also be used to position or detect these track components.

[0140] Therefore, the track detection device 100 of this embodiment can also be used to perform various detections on the turnout, that is, the track detection device 100 can further cover more detection items.

[0141] In this embodiment, other structures and functions are the same as those in the first embodiment, and will not be repeated here.

[0142] In addition, the second-line laser sensor 217b and the fourth-line laser sensor 217e of this embodiment can also be combined with the solution of the second embodiment, that is, a total of five line laser sensors are provided in the vehicle body unit 21.

[0143] The above embodiments are only used to illustrate the specific implementation manners of the present invention, and the present invention is not limited to the description scope of the above embodiments.

[0144] In the above embodiments, the detection components in the two vehicle body units 21 are arranged in the same way. When the track detection device 100 moves along the track, it can simultaneously collect the images and profile data of the two side rails. In an alternative solution, according to the detection needs, the detection components in the two vehicle body units 21 can also be arranged differently, or the above detection components can also be provided only in one of the vehicle body units 21 to detect one of the rails.

[0145] In the above embodiment, the bearing mechanism 30 includes four bearing wheel assemblies 31 and four pressing assemblies 32, which are respectively arranged at the positions corresponding to two main line rails in a group of two. In an alternative solution, the bearing mechanism 30 may also include more bearing wheel assemblies 31 and more pressing assemblies 32.

[0146] In the above embodiment, distance detection encoders 317 are installed in two of the bearing wheels 313. In an alternative solution, they may also be installed in only one bearing wheel 313, or in more bearing wheels 313.

[0147] In the above embodiment, two pressing assemblies 32 on one side of the rail are set in the form of fixed side wheels, and the two pressing assemblies 32 on the other side are set in the form of spring side wheels. In an alternative solution, according to the actual track conditions and detection requirements, multiple pressing assemblies 32 may also adopt different configurations. For example, they may also be all set in the form of fixed side wheels, or all set in the form of spring side wheels.

[0148] In the above embodiment, the effect of the track detection device 100 is illustrated by taking the gauge change of the main line rail as an example. In fact, it can be understood that when the rail has certain geometric defects, the track detection device 100 can also be kept stable during the movement through multiple pressing assemblies 32.

[0149] In the above embodiment, the number of two-dimensional cameras 215 in each vehicle body unit 21 is one, which is used to photograph the upper surface of the rail to obtain corresponding track images for detection. In an alternative solution, according to the detection requirements, two or more two-dimensional cameras 215 may also be provided in each vehicle body unit 21.

Claims

1. An orbit detection device for detecting an orbit, characterized in that, Comprising: Vehicle body; And A bearing mechanism, disposed on the vehicle body, and the vehicle body is movably placed on two steel rails through the bearing mechanism, Wherein, the vehicle body includes two vehicle body units, respectively located above the two steel rails, Each of the vehicle body units includes: A two-dimensional camera for acquiring an image of the corresponding steel rail; and A plurality of line laser sensors, arranged circumferentially along the corresponding steel rail and all facing the steel rail, for acquiring the profile line of the steel rail, The bearing mechanism includes: At least four bearing wheel assemblies, respectively disposed on the two vehicle body units and respectively corresponding to the two steel rails, so that the vehicle body is movably placed on the two steel rails; and At least four pressing assemblies, respectively disposed on the two vehicle body units and respectively located beside each bearing wheel assembly, for laterally limiting the vehicle body, Wherein, the bearing wheel assembly includes: A bearing wheel bracket disposed on the vehicle body; A bearing wheel rotating shaft rotatably connected to the bearing wheel bracket through a pair of bearings; and A bearing wheel connected to the bearing wheel rotating shaft, and when the bearing wheel rolls along the steel rail, driving the bearing wheel rotating shaft to rotate synchronously, At least one of the bearing wheel assemblies further includes a distance detection encoder disposed inside the bearing wheel for acquiring corresponding mileage data when the bearing wheel rolls along the steel rail, The pressing assembly includes: A pressing bracket fixedly installed on the vehicle body unit; A wheel body bracket movably connected to the pressing bracket; A pressing wheel rotatably connected to the wheel body bracket; and An elastic member connected between the pressing bracket and the wheel body bracket, so that the pressing wheel presses towards the inner side of the steel rail, The pressing assembly further includes a locking member for locking the relative position between the pressing wheel and the vehicle body, The locking member includes: A locking member disposed on the pressing bracket, having a locking end; and A locking mating member disposed on the wheel body bracket, having a locking hole matching the locking end.

2. The track detection device according to claim 1, It is characterized in that: Wherein, the plurality of line laser sensors at least includes: A first line laser sensor located outside the steel rail, and the profile line acquired by it covers the lower jaw part of the steel rail; and A third line laser sensor located above the inner side of the steel rail, The line laser planes projected by the first line laser sensor and the third line laser sensor are coplanar with the same cross-section of the steel rail.

3. The track detection device according to claim 2, It is characterized in that: Wherein, the plurality of line laser sensors further includes: A second line laser sensor located above the outer side of the corresponding steel rail; and A fourth line laser sensor located above the inner side of the steel rail and closer to the middle of the vehicle body than the third line laser sensor, The line laser planes projected by the first line laser sensor to the fourth line laser sensor are coplanar with the same cross-section of the steel rail.

4. The track detection device according to claim 1, characterized in that: Among them, Each of the vehicle body units further includes: The fifth line laser sensor is located above the corresponding rail, and the line laser plane projected by it is perpendicular to the cross section of the rail.

5. The track detection device according to claim 1, It is characterized in that: Wherein, the vehicle body unit further includes: A housing with an opening at the bottom, and the two-dimensional camera and multiple line laser sensors are all installed in the housing; and A lighting unit, arranged in the housing, for providing lighting for the shooting of the two-dimensional camera, The two-dimensional camera is horizontally installed at the top inside the housing, The vehicle body unit further includes a refractive mirror, which is obliquely installed in front of the lens of the two-dimensional camera and is located above the corresponding rail.

6. The track detection device according to claim 5, characterized in that: Among them, One end in the length direction of the housing is in a cuboid shape, which is a connection end, and the other end opposite to the connection end is in a wedge shape, The housing includes a unit connection plate, which is arranged at the connection end, The connection ends of the two vehicle body units are combined facing each other, The two unit connection plates are stacked along their thickness directions and fixed by connecting pieces.

7. The track detection device according to claim 1, characterized in that: Among them, In each vehicle body unit, the number of the two-dimensional cameras is more than two.

Images