Three-dimensional track inspection device

Abstract

The invention provides a three-dimensional track inspection device, and belongs to the technical field of track detection. In order to solve the problem that the three-dimensional track inspection device is inconvenient to transport and carry due to the large size, the three-dimensional track inspection device comprises a telescopic frame, and the telescopic frame comprises a main frame body and an auxiliary frame body in sliding connection; a first locking block is arranged on the main frame, a second locking block is arranged on the auxiliary frame, and in the unfolding state, the first locking block and the second locking block are locked and clamped through a locking mechanism; a first interval exists between the first locking block and the end face of the end, connected with the auxiliary frame, of the main frame, or a first interval exists between the second locking block and the end face of the end, connected with the main frame, of the auxiliary frame, the main frame and the auxiliary frame are connected through a sliding block and a sliding rail, and the sliding block covers the first interval. The detection units are installed through the main frame and the auxiliary frame respectively and can slide relative to each other, rapid overall expansion or contraction is achieved, the device is still a whole while the size is reduced through contraction, and carrying and transportation are convenient.

Description

Technical Field

[0001] The present application relates to the field of track detection technology, and in particular to a three-dimensional track inspection device. Background Art

[0002] Track inspection is the operation of regularly checking the status of equipment on the entire railway or subway network, including visible structural defects and diseases of track structures and equipment such as rails, fasteners, ballast beds, switches and ancillary equipment, and understanding the working status of equipment to ensure driving safety.

[0003] In the existing production model, track inspection is mainly based on manual visual inspection. Manual visual inspection relies on inspectors walking along the track or using simple tools to inspect. Not only does it take less time to work, but it also involves many inspection items, which places high technical requirements on inspectors. Some line sections are long, and manual inspection cannot cover the entire section range at one construction point. At the same time, in terms of inspection quality, the criteria for manually judging defects are relatively subjective, with different standards, and it is difficult to form effective data, requiring a lot of manual work to organize and summarize inspection records in the later stage.

[0004] Some auxiliary detection equipment is also used in manual visual inspections, but this type of traditional detection equipment can only measure a single parameter or a few parameters of the track. For example, some track gauges based on mechanical principles can only measure the track gauge and cannot fully reflect the three-dimensional state of the track. There are also some devices that use ultrasonic detection, which are limited to detecting specific types of defects and lack the ability to comprehensively evaluate the overall condition of the track.

[0005] At present, some intelligent inspection equipment has also appeared. Although it has improved the inspection efficiency to a certain extent, it still has shortcomings. Some equipment based on two-dimensional image analysis cannot accurately obtain the three-dimensional structural information of the track, such as the depth of the fallen block and the distance of the bolt loosening. In addition, the data processing capacity of some equipment is limited and it cannot timely and accurately analyze and diagnose complex track diseases.

[0006] There are corresponding improvements in the prior art to the above problems. For example, a Chinese patent application with a publication date of 2021-9-10 and publication number CN113371028A discloses an intelligent inspection system and method for electric passenger car tracks. Sub-inspection system 1 and sub-inspection system 2 are used to measure the left and right tracks to obtain measurement data 1 and measurement data 2, and sub-inspection system 3 is used to measure the sleepers to obtain measurement data 3, so as to accurately obtain the three-dimensional structure of the track and greatly improve the efficiency. The disadvantage of this solution is that sub-inspection system 1, sub-inspection system 2 and sub-inspection system 3 are fixedly arranged on the fixing parts, and the overall volume is large, which is not convenient for transportation and carrying. Summary of the invention

[0007] The purpose of this application is to solve the problem in the prior art that the three-dimensional rail inspection device is large in size and inconvenient to transport and carry. Therefore, this application provides a three-dimensional rail inspection device, in which each detection unit is installed separately through a main frame and a sub-frame, and can slide relative to each other to achieve rapid overall expansion or contraction, and the device can be contracted to reduce the volume while still being a whole, which is easy to carry and transport.

[0008] The present application provides a three-dimensional rail inspection device, including:

[0009] A telescopic frame, the telescopic frame comprising a main frame and a sub-frame slidably connected to an end of the main frame, the sub-frame being slidable along a first direction, and the telescopic frame having an expanded state;

[0010] The main frame is provided with a first locking block, and the sub-frame is provided with a second locking block. In the unfolded state, the first locking block and the second locking block are locked and clamped by a locking mechanism;

[0011] The first locking block is spaced a first distance from the end face of the end where the main frame is connected to the sub-frame, or the second locking block is spaced a first distance from the end face where the sub-frame is connected to the main frame, the main frame and the sub-frame are connected via a slider and a slide rail, and the slider covers the first distance;

[0012] The main frame is connected to a middle detection unit in a second direction perpendicular to the first direction, and the size of the main frame in the second direction is adapted to the top surface size of the middle detection unit. The sub-frame is connected to a side detection unit in a second direction perpendicular to the first direction, and the size of the sub-frame in the second direction is adapted to the top surface size of the side detection unit.

[0013] By adopting the above technical scheme, the main frame and the sub-frame of the telescopic frame are slidably connected, so that the device can be quickly expanded or contracted as a whole, which is convenient for rapid switching between working state and non-working state, ensuring the efficiency of track inspection, and after contraction, the device is reduced in size while still being a whole, which is convenient for carrying and transportation; the first locking block on the main frame and the second locking block on the sub-frame are used in conjunction with the locking mechanism to achieve precise positioning of the expanded position of the device, that is, precise positioning of each detection unit, to ensure the accuracy of the inspection, and to achieve all-round locking and clamping of the expanded state of the device, to avoid relative movement of the main and sub-frames during the inspection process, to ensure the stability of the inspection, to reduce the error jump of the inspection data, and thus to improve the inspection accuracy; at the same time, the dimensions of the main and sub-frames in the second direction are adapted to the top surface dimensions of the corresponding detection units, so as to facilitate the installation of each detection unit.

[0014] In some embodiments, the first locking block includes a first locking hole, the second locking block includes a second locking hole, and in the expanded state, the first locking hole is connected to the second locking hole;

[0015] The locking mechanism includes a connecting rod and an operating assembly and a locking member respectively arranged at both ends of the connecting rod. The connecting rod can pass through the first locking hole and the second locking hole in sequence, and the operating assembly and the locking member can clamp the first locking block and the second locking block.

[0016] By adopting the above technical solution, the first locking hole and the second locking hole that can be connected can be cooperated with the connecting rod to achieve preliminary locking of the main and sub-frames in the sliding direction, which is convenient for the operating component and the locking member to clamp the first locking block and the second locking block on both sides, thereby achieving all-round locking and clamping of the main and sub-frames, and the operation is convenient and reliable.

[0017] In some embodiments, the second locking block has a first opening extending along the first direction and with the opening direction away from the connecting end of the sub-frame and the main frame, the second locking hole is connected to the first opening, and the connecting rod can enter and exit the second locking hole through the first opening;

[0018] The operating component is in contact with the first locking block, and the locking piece is in contact with the second locking block. The contact surface of the operating component and the corresponding end surface of the first locking block are matching step surfaces, and the contact surface of the locking piece and the corresponding end surface of the second locking block are matching conical surfaces.

[0019] By adopting the above technical scheme, the first opening of the second locking block makes it convenient for the connecting rod to enter and exit the second locking hole in the sliding direction, that is, the main and sub-frames can be slid without pulling out the connecting rod, which improves the convenience of unlocking the main and sub-frames. At the same time, the locking mechanism can maintain connection with the first locking block in different states of the device, so as to ensure that it is a whole, avoid omission and loss, and further facilitate transportation and carrying; at the same time, the clamping surfaces on both sides are step surfaces and conical surfaces respectively, which increases the contact area and improves the reliability of locking and clamping; and, the conical surface which also has a guiding function is set on the second locking block, so that when the locking piece moves through the connecting rod to contact with the second locking block, it can be accurately locked with it, which further improves the reliability of locking and clamping.

[0020] In some embodiments, an elastic return member is provided between the operating component and the locking member, and the elastic return member applies a thrust to the locking member and the operating component so that the two have a tendency to move away from the first locking block and the second locking block.

[0021] By adopting the above technical solution, the elastic return member is used to ensure that the locking member can quickly move away from the second locking block after unlocking, thereby improving the unlocking efficiency; and, since the unlocking can be assisted by the thrust of the elastic return member, the plug-in fitting clearance between the connecting rod and the first locking block and the second locking block can be set smaller, thereby further improving the locking effect.

[0022] In some embodiments, the operating component includes a transmission component and a rotating rod, the transmission component is arranged at one end of the connecting rod, the rotating rod is connected to the transmission component, and the rotating rod can rotate and drive the transmission component to move to clamp or release the first locking block and the second locking block with the locking member.

[0023] In some embodiments, the transmission assembly includes a housing, an active block and a passive block stacked in the housing, the active block is connected to the rotating rod, and the passive block is connected to the connecting rod;

[0024] The housing is fixed on the first locking block, and the connecting surface between the housing and the first locking block is a step surface;

[0025] The active block and the passive block are both wedge-shaped blocks, and the two are arranged in a staggered manner through inclined surfaces.

[0026] By adopting the above technical solution, the translation is converted into lifting through the cooperation of the wedge-shaped active block and the passive block, that is, the operating direction is converted from the axial direction of the connecting shaft to the direction perpendicular to its axis, which is easy to operate.

[0027] In some embodiments, the housing has a first escape opening at one end facing away from the first locking block, and has a second escape opening perpendicular to the opening direction of the first escape opening;

[0028] The passive block is arranged away from the first locking block, and at least part of the passive block can extend out of the shell through the first avoidance opening; the active block and the rotating rod are connected through the second avoidance opening, and at least part of the active block can extend out of the shell through the second avoidance opening.

[0029] By adopting the above technical solution, by setting avoidance openings corresponding to the active block and the passive block on the shell, the two can use the external space of the shell to move, so that the space inside the shell can be set only to accommodate the two, controlling the volume of the shell, and then controlling the volume of the device, which is further convenient for carrying and transportation.

[0030] In some embodiments, both sides of the sub-frame in the second direction are slidably connected to corresponding sides of the main frame, and both sides of the main frame in the second direction are provided with the first locking blocks, and both sides of the sub-frame in the second direction are provided with the second locking blocks;

[0031] The transmission components are symmetrically arranged in two, and the active blocks of the two transmission components are respectively connected to the two ends of the rotating rod. The rotating rod rotates and drives the two active blocks to move toward or away from each other along the second direction.

[0032] By adopting the above technical solution, the two sides of the sub-frame are respectively slidably connected to the two sides of the main frame, thereby improving the connection reliability and relative sliding stability of the main and sub-frames; and, a first locking block and a second locking block are provided on each side, so that bilateral locking and clamping can be achieved, thereby improving the stability and reliability of the device in the deployed state; at the same time, a single rotating rod controls two transmission components, thereby realizing synchronous control of the locking and clamping on both sides, which is convenient to operate.

[0033] In some embodiments, it further comprises two symmetrically arranged support mechanisms, one end of the support mechanism being detachably connected to the main frame, and the other end of the support mechanism being connected to a device movable on a track;

[0034] The distance between the ends of the two supporting mechanisms connected to the main frame is smaller than the distance between the ends connected to the equipment.

[0035] By adopting the above technical solution, the device can be easily connected with other equipment, such as an inspection cart, through the support mechanism, thereby further improving the convenience of inspection; at the same time, the support mechanism is detachably connected to the main frame to reduce the overall volume, and the number of disassembly is limited, and the overall shape is relatively regular, which is convenient for carrying and transportation; and after the two support mechanisms are assembled with the main frame, the distances at both ends are different, forming a triangular support structure, which improves the support stability and reliability.

[0036] In some embodiments, the main frame is provided with a mounting plate along the second direction, and the mounting plate and the supporting mechanism are connected via a detachable assembly mechanism; the detachable assembly mechanism comprises a first fixing seat provided on the mounting plate, a rotatable operating rod is plugged into the first fixing seat, and a locking rod perpendicular to the axis of the operating rod is provided at the end of the operating rod;

[0037] The detachable assembly mechanism further comprises a second fixing seat arranged at the end of the supporting mechanism, and the end surface of the second fixing seat is provided with a locking hole communicating with the interior thereof;

[0038] The locking rod can be inserted into the second fixing seat through the locking hole, and the locking rod can rotate synchronously with the operating rod and abut against the inner end surface of the second fixing seat.

[0039] By adopting the above technical solution, the operating rod and the main frame are connected through the first fixed seat of the detachable assembly mechanism, and the locking rod at the end of the operating rod is extended into the second fixed seat arranged on the support mechanism and rotated, so as to realize the detachable connection between the main frame and the support mechanism, and the operation is convenient; and the various components of the detachable assembly mechanism are connected with the main frame or the support mechanism, which can avoid omission and loss, and is convenient for carrying and transportation.

[0040] In some embodiments, one end of the support mechanism has a positioning structure, and the main frame is provided with a positioning component around its detachable connection with the support mechanism, and the positioning component is adapted to the positioning structure of the support mechanism; and the end surface of the positioning component facing away from the main frame is an inclined guide surface to guide the positioning structure of the support mechanism into the positioning component.

[0041] By adopting the above technical solution, the positioning structure of the support mechanism and the positioning component of the main frame cooperate with each other to achieve assembly positioning of the support mechanism and the main frame, improve the connection accuracy between the two, and ensure inspection accuracy; and, through the guide surface of the positioning component, the assembly efficiency is improved.

[0042] Other features and corresponding beneficial effects of the present application are described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the records in the specification of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present application;

[0044] Figure 2 It is a schematic diagram of the main structure of the embodiment of the present application in the unfolded state, and is assembled with a supporting mechanism;

[0045] Figure 3 This is a schematic diagram of the main structure of the embodiment of the present application in a retracted state, with the support mechanism removed;

[0046] Figure 4 This is a schematic diagram of the use status of an embodiment of the present application;

[0047] Figure 5 This is a schematic diagram of the explosion structure of an embodiment of the present application;

[0048] Figure 6 Schematic diagram of the three-dimensional structure of the locking mechanism in the embodiment of the present application; wherein the locking member is omitted;

[0049] Figure 7 It is a schematic cross-sectional structure diagram of the assembled locking mechanism, the first locking block and the second locking block in the embodiment of the present application;

[0050] Figure 8This is a schematic diagram of the structure after the detachable assembly mechanism and the mounting plate are assembled in the embodiment of the present application;

[0051] Fig. 9 for Figure 8 A structural diagram from another perspective;

[0052] Fig.10 This is a schematic diagram of the three-dimensional structure of the support mechanism in the embodiment of the present application;

[0053] Fig.11 Schematic diagram of the layout of each detection unit in the embodiment of the present application;

[0054] Fig.12 It is a connection diagram of each detection unit and the electrical control unit in the embodiment of the present application.

[0055] Description of reference numerals: 1. middle detection unit; 11. first signal interface; 2. side detection unit; 3. electrical control unit; 31. second signal interface; 4. inspection vehicle;

[0056] 100, main frame; 101, side plate; 102, connecting plate; 110, first locking block; 120, slider; 130, mounting plate; 131, limit strip; 140, drag chain; 150, reinforcement plate;

[0057] 200, sub-frame; 210, second locking block; 211, third locking block; 220, slide rail; 230, handle;

[0058] 300, locking mechanism; 310, connecting rod; 311, connecting shaft; 320, transmission assembly; 321, housing; 322, active block; 323, passive block; 330, rotating rod; 340, locking member; 350, elastic reset member; 360, operating ring; 370, locking ring;

[0059] 400, support mechanism; 410, support rod; 420, mounting seat; 430, height adjustment mechanism;

[0060] 500, detachable assembly mechanism; 510, first fixing seat; 520, operating rod; 530, locking rod; 540, second fixing seat; 541, locking hole. DETAILED DESCRIPTION

[0061] The following specific embodiments illustrate the implementation of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this application are limited to the implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide a deep understanding of the present application, the following description will include many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0062] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0063] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description created by the present application, unless otherwise specified, "multiple" means two or more. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0064] It should be noted that track inspection usually uses a track inspection trolley to install a detection device and manually drive it to obtain continuous data on the track for a long time. In order to facilitate transportation and carrying, the inspection trolley is usually designed as a quick-disassembly structure. For example, a Chinese patent application with a publication date of 2023-7-28 and a publication number of CN219428116U discloses a double-track self-propelled track inspection trolley, including: a first walking component, a second walking component and a connecting component. The first walking component and the second walking component are respectively detachably connected to the connecting component, which is light in weight, easy to disassemble and assemble, and easy to transport and carry.

[0065] However, the current detection device, namely the middle detection unit and the two side detection units, is usually fixedly installed on the crossbeam. Although the trolley is detachable, the detection device as a whole is not detachable. It is large and long, which is not only inconvenient to transport and carry, but also long and easy to be damaged by bumps during transportation.

[0066] See also Figure 1-4 , Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present application; Figure 2 It is a schematic diagram of the main structure of the embodiment of the present application in the unfolded state, and is assembled with a support mechanism 400; Figure 3 This is a schematic diagram of the main structure of the embodiment of the present application in a retracted state, with the support mechanism 400 removed; Figure 4 This is a schematic diagram of the usage status of an embodiment of the present application.

[0067] To facilitate carrying and transportation, an embodiment of the present application provides a three-dimensional track inspection device, including a telescopic frame and an intermediate detection unit 1 and a side detection unit 2 installed on the telescopic frame. The telescopic frame can be used to achieve rapid overall expansion or contraction, and while shrinking to reduce the volume, it still remains a whole, which is easy to carry and transport.

[0068] In one embodiment, the telescopic frame includes a main frame 100 and a sub-frame 200 slidably connected to the end of the main frame 100. The sub-frame 200 can slide along a first direction, and the telescopic frame has an expanded state. Similarly, the telescopic frame has a contracted state. The main frame 100 and the sub-frame 200 of the telescopic frame are slidably connected to each other, so that the device can be quickly expanded or contracted as a whole, which is convenient for rapid switching between working and non-working states, thereby ensuring the efficiency of track inspection. Moreover, after contraction, the device is reduced in size while still being an integral whole, which is convenient for carrying and transportation. It can usually be 1 meter in length for easy transportation and carrying.

[0069] Preferably, a handle 230 is provided at the free end of the sub-frame 200 to facilitate pulling and sliding and telescoping.

[0070] In one embodiment, the main frame 100 includes two symmetrically arranged side plates 101 and a connecting plate 102 connecting the two side plates 101, which has a simple structure and is light in weight. Preferably, a reinforcing plate 150 is also arranged in the middle of the main frame 100 to enhance strength.

[0071] In one embodiment, the sub-frame 200 is in a U-shaped structure, and its two cantilevers are slidably connected to the main frame 100 .

[0072] In one embodiment, a first locking block 110 is provided on the main frame 100, and a second locking block 210 is provided on the sub-frame 200. In the expanded state, the first locking block 110 and the second locking block 210 are locked and clamped by the locking mechanism 300, so as to realize the precise positioning of the expanded position of the device, that is, the precise positioning of each detection unit, ensure the inspection accuracy, and realize the all-round locking and clamping of the expanded state of the device, so as to avoid the relative movement of the main and sub-frames 200 during the inspection process, ensure the inspection stability, reduce the error jump of the inspection data, and thus improve the inspection accuracy.

[0073] In one embodiment, the second locking block 210 has a first interval from the end face of the end where the sub-frame 200 is connected to the main frame 100, that is, the second locking block 210 has a first interval from the end face of the connection end of the sub-frame 200, and the main frame 100 and the sub-frame 200 are connected through the slider 120 and the slide rail 220, and the slider 120 covers the first interval, so that in the unfolded state, the main and sub-frames 200 are still tightly connected by the slider 120 and the slide rail 220 over the length of the first interval, thereby improving the stability and reliability of the connection between the two, and avoiding the bending and deformation of the sub-frame 200 under the gravity of the side detection unit 2, ensuring the reliability of the device. Preferably, 1 / 4 of the length of the sub-frame 200 < the first interval length ≤ 1 / 3 of the length of the sub-frame 200, so that the material selection of the sub-frame 200 can be controlled to control the cost and ensure a small volume after contraction.

[0074] Preferably, when the first interval is located between the connecting end faces of the second locking block 210 and the sub-frame 200, the first locking block 110 can be set at the end of the main frame 100 to ensure the unfolded length and make the locking position of the two closer to the middle position of the sub-frame 200 relative to other positions of the main frame 100 where the first locking block 110 is installed, thereby improving the locking stability and reliability of the main and sub-frames 200.

[0075] In other alternative embodiments, the first gap is located between the first locking block 110 and an end surface of an end where the main frame 100 and the sub-frame 200 are connected.

[0076] In one embodiment, the main frame 100 is connected to the middle detection unit 1 in a second direction perpendicular to the first direction, and the size of the main frame 100 in the second direction is adapted to the top surface size of the middle detection unit 1. The sub-frame 200 is connected to the side detection unit 2 in the second direction perpendicular to the first direction, and the size of the sub-frame 200 in the second direction is adapted to the top surface size of the side detection unit 2.

[0077] This approach facilitates installation of each detection unit by adapting the dimensions of the main and sub-frames 200 in the second direction to the top surface dimensions of the corresponding detection units.

[0078] Taking the adaptation of the size of the sub-frame 200 in the second direction to the top surface size of the side detection unit 2 as an example, specifically:

[0079] (1) The dimension of the sub-frame 200 in the second direction is greater than the length of the top surface of the side detection unit 2, so that the top of the side detection unit 2 can be covered in the sub-frame 200 in the circumferential direction, thereby improving the connection stability and reliability between the two.

[0080] (2) The dimension of the sub-frame 200 in the second direction is equal to the length of the top surface of the side detection unit 2, so that the top of the side detection unit 2 can be installed on the edge of the sub-frame 200, and the edges of the two are basically flush, which can ensure better connection stability and reliability while controlling the volume of the sub-frame 200.

[0081] (3) The size of the sub-frame 200 in the second direction is smaller than the top length of the side detection unit 2, so that the top of the side detection unit 2 can be installed on the edge of the sub-frame 200 and protrude from the edge of the sub-frame 200. While ensuring a certain connection stability and reliability, the sub-frame 200 can be made smaller in size.

[0082] In this embodiment, the length direction of each detection unit extends along the track direction. Therefore, the size of the sub-frame 200 in the second direction is adapted to the top surface length of the side detection unit 2. In other embodiments, it can be adapted accordingly according to different detection units.

[0083] It should be noted that the dimensions of the main and sub-frames 200 in the second direction can be adapted alternately. For example, the dimension of the main frame 100 in the second direction is smaller than the top surface length of the middle detection unit 1, and the dimension of the sub-frame 200 in the second direction is equal to the top surface length of the side detection unit 2, thereby facilitating the sliding setting of the main and sub-frames 200, and the edges of each detection unit are flush, thereby improving the regularity of the device and further facilitating transportation and carrying.

[0084] It should also be noted that adaptation includes the necessary distance caused by mounting parts, connecting parts, etc.

[0085] In one embodiment, both the middle detection unit 1 and the side detection unit 2 are provided with a first signal interface 11, and the first signal interface 11 is arranged at the top thereof.

[0086] An electrical control unit 3 is also provided on the main frame 100. Second signal interfaces 31 adapted to the number of detection units are provided at both ends of the electrical control unit 3, so that the connecting cables of the first signal interface 11 and the second signal interface 31 can be arranged parallel to the main frame 100, which is convenient for organizing the cables, reducing the impact of sliding on the main and sub-frames 200, and ensuring reliable connection.

[0087] It can be understood that the middle detection unit 1 and the side detection unit 2 can adopt conventional track detection equipment based on three-dimensional vision technology in this field, so as to realize continuous image acquisition of the rail surface, fasteners, sleepers, roadbed, etc. under the condition of rapid movement, and form 3D point cloud data, and use image recognition technology to make real-time detection and early warning of defects such as fastener missing, breakage, skewness, surface scratches, etc., and at the same time, quantitative analysis of bolt looseness, block drop depth, etc. can be carried out, and all-round and accurate detection in the longitudinal, lateral and vertical directions can be achieved.

[0088] Conventional track inspection equipment based on three-dimensional vision technology usually includes a 3D camera, a linear structured light laser and a control system.

[0089] In one embodiment, the first locking block 110 includes a first locking hole 541 , the second locking block 210 includes a second locking hole 541 , and in the unfolded state, the first locking hole 541 is connected to the second locking hole 541 , thereby facilitating the setting of the locking mechanism 300 .

[0090] The locking mechanism 300 includes a connecting rod 310 and an operating component and a locking member 340 respectively arranged at both ends of the connecting rod 310. The connecting rod 310 can pass through the first locking hole 541 and the second locking hole 541 in sequence, and the operating component and the locking member 340 can clamp the first locking block 110 and the second locking block 210, that is, the first locking block 110 and the second locking block 210 move with the main and sub-frames to the stack, and the operating component and the locking member 340 are respectively located on both sides of the stack as a whole, and clamping is achieved, thereby achieving all-round locking and clamping of the main and sub-frames 200, that is, not only locking in the sliding direction, but also locking in other directions, and the operation is convenient and reliable.

[0091] In one embodiment, the device further comprises two symmetrically arranged support mechanisms 400, one end of the support mechanism 400 is detachably connected to the main frame 100, and the other end is connected to a device movable on the track, for example Figure 4As shown, it is connected with the inspection vehicle 4 to further improve the convenience of inspection. At the same time, the support mechanism 400 is detachably connected with the main frame 100 to reduce the overall volume, and the number of disassembly is limited. The overall shape is relatively regular and easy to carry and transport.

[0092] In particular, the other end of the support mechanism 400 is fixedly connected to the side of the vehicle body of the inspection vehicle 4. When in use, only the main frame 100 and the support mechanism 400 need to be disassembled and assembled, which further improves the convenience of operation. Furthermore, the support mechanism 400 is provided with a steering assembly to achieve the steering of the support mechanism 400 to fit the vehicle body, thereby reducing the volume of the vehicle body in the non-working state, and further facilitating carrying and transportation.

[0093] In one embodiment, the end spacing of the two support mechanisms 400 connected to the main frame 100 is smaller than the end spacing of the two support mechanisms 400 connected to the equipment, that is, after the two support mechanisms 400 are assembled with the main frame 100, the distances at both ends thereof are different, forming a triangular support structure, thereby improving support stability and reliability.

[0094] See also Figure 5 , Figure 5 This is a schematic diagram of the explosion structure of an embodiment of the present application.

[0095] In one embodiment, the second locking block 210 has a first opening extending along the first direction and the opening direction is away from the connecting end of the sub-frame 200 and the main frame 100. The second locking hole 541 is connected to the first opening, and the connecting rod 310 can enter and exit the second locking hole 541 through the first opening, which is convenient for the connecting rod 310 to enter and exit the second locking hole 541 in the sliding direction, that is, it is convenient to realize the sliding of the main and sub-frames 200 without pulling out the connecting rod 310, thereby improving the convenience of unlocking the main and sub-frames 200. At the same time, the locking mechanism 300 can maintain the connection with the first locking block 110 in different states of the device, thereby ensuring that it is a whole, avoiding omission and loss, and further facilitating transportation and carrying.

[0096] In one embodiment, the sub-frame 200 is further provided with a third locking block 211. In the retracted state, the first locking block 110 and the third locking block 211 are locked and clamped by the locking mechanism 300, thereby ensuring that the main and sub-frames 200 in the retracted state will not slide relative to each other, further facilitating transportation and carrying. Preferably, the third locking block 211 has a second opening, and the second opening is arranged opposite to the first opening of the second locking block 210, thereby limiting the relative sliding position of the main and sub-frames 200, preventing the two from being separated, and improving the reliability of the connection between the two.

[0097] In one embodiment, a drag chain 140 is provided between the main and sub-frames 200 to organize the cables of each detection unit to avoid the cables being pulled in a chaotic manner during sliding and causing them to fall off, thereby further improving the reliability of the cable connection.

[0098] See also Figure 6-7 , Figure 6 3D schematic diagram of the locking mechanism 300 in the embodiment of the present application, wherein the locking member 340 is omitted; Figure 7 Schematic diagram of the cross-sectional structure of the locking mechanism 300, the first locking block 110 and the second locking block 210 after being assembled in the embodiment of the present application.

[0099] In one embodiment, the operating assembly contacts the first locking block 110, the locking member 340 contacts the second locking block 210, and the contact surface of the operating assembly and the corresponding end surface of the first locking block 110 are matched step surfaces, and the contact surface of the locking member 340 and the corresponding end surface of the second locking block 210 are matched tapered surfaces, so that the clamping surfaces on both sides are respectively stepped surfaces and tapered surfaces, which increases the contact area and improves the reliability of locking and clamping. In addition, the tapered surface that also has a guiding function is set on the second locking block 210, so that when the locking member moves to contact with the second locking block 210 through the connecting rod 310, it is convenient to accurately lock with it, further improving the reliability of locking and clamping.

[0100] In one embodiment, an elastic reset member 350 is provided between the operating assembly and the locking member 340, and the elastic reset member 350 applies a thrust to the locking member 340 and the operating assembly, so that the two have a tendency to depart from the first locking block 110 and the second locking block 210, ensuring that the locking member 340 can quickly move away from the second locking block 210 after unlocking, thereby improving the unlocking efficiency. In addition, since unlocking can be performed with the help of the thrust of the elastic reset member 350, the plug-in matching clearance between the connecting rod 310 and the first locking block 110 and the second locking block 210 can be set to be smaller, thereby further improving the locking effect.

[0101] In one embodiment, the operating component includes a transmission component 320 and a rotating rod 330. The transmission component 320 is disposed at one end of the connecting rod 310. The rotating rod 330 is connected to the transmission component 320. The rotating rod 330 can rotate and drive the transmission component 320 to move so as to clamp or release the first locking block 110 and the second locking block 210 with the locking member 340.

[0102] In other alternative embodiments, the connecting rod 310 is a threaded rod, and the operating assembly includes a nut, and the nut and the locking member 340 are locked and clamped by rotating the nut.

[0103] In one embodiment, the transmission assembly 320 includes a housing 321 , an active block 322 and a passive block 323 stacked in the housing 321 , the active block 322 is connected to the rotating rod 330 , and the passive block 323 is connected to the connecting rod 310 .

[0104] The housing 321 is fixed on the first locking block 110 , and preferably, the connecting surface between the housing 321 and the first locking block 110 is a stepped surface.

[0105] The active block 322 and the passive block 323 are both wedge-shaped blocks, and the two are arranged in an alternating manner through inclined surfaces, so that the rotating rod 330 drives the active block 322 to move relative to the passive block 323, and the movement of the active block 322 drives the passive block 323 to rise and fall, and the rise and fall of the passive block 323 drives the connecting rod 310 to rise and fall along its axial direction, and drives the locking piece 340 to rise and fall relative to the shell 321, so that the shell 321 and the locking piece 340 clamp or release the first locking block 110 and the second locking block 210.

[0106] This method realizes the conversion of translation into lifting by cooperating with the wedge-shaped active block 322 and the passive block 323, that is, the operation direction is converted from the axial direction of the connecting shaft 311 to the direction perpendicular to its axis, which is easy to operate.

[0107] In one embodiment, the housing 321 has a first escape opening at one end away from the first locking block 110, and has a second escape opening perpendicular to the opening direction of the first escape opening. The passive block 323 is arranged away from the first locking block 110, and at least part of the passive block 323 can extend out of the housing 321 through the first escape opening. The active block 322 and the rotating rod 330 are connected through the second escape opening, and at least part of the active block 322 can extend out of the housing 321 through the second escape opening.

[0108] This method provides avoidance openings corresponding to the active block 322 and the passive block 323 on the shell 321, so that the two can move using the external space of the shell 321, so that the space inside the shell 321 can be set only to accommodate the two, thereby controlling the volume of the shell 321, and then controlling the volume of the device, further facilitating carrying and transportation.

[0109] In one embodiment, both sides of the sub-frame 200 in the second direction are slidably connected to the corresponding sides of the main frame 100, and both sides of the main frame 100 in the second direction are provided with first locking blocks 110, and both sides of the sub-frame 200 in the second direction are provided with second locking blocks 210.

[0110] Two transmission assemblies 320 are symmetrically arranged, and the active blocks 322 of the two transmission assemblies 320 are respectively connected to the two ends of the rotating rod 330. The rotating rod 330 rotates and drives the two active blocks 322 to move toward or away from each other along the second direction.

[0111] This method improves the connection reliability and relative sliding stability of the main and sub-frames 200 by slidingly connecting the two sides of the sub-frame 200 with the two sides of the main frame 100. In addition, a first locking block 110 and a second locking block 210 are provided on each side, so that bilateral locking and clamping can be achieved, which improves the stability and reliability of the device in the unfolded state. At the same time, a single rotating rod 330 controls two transmission assemblies 320 to achieve synchronous control of locking and clamping on both sides, which is convenient to operate.

[0112] In one embodiment, the rotating rod 330 is threadedly connected to the active block 322, and the rotating rod 330 rotates to drive the active block 322 in the housing 321 to move. When both ends of the rotating rod 330 are connected to the transmission assembly 320, those skilled in the art know that the threads at both ends of the rotating rod 330 are in opposite directions.

[0113] In other alternative embodiments, the rotating rod 330 includes a first rod and a second rod that are threadedly connected, and the second rod is fixedly connected to the active block 322. When both ends of the rotating rod 330 are connected to the transmission assembly 320, those skilled in the art know that the other end of the first rod is reversely threadedly connected to the third rod, and the third rod is connected to another active block 322, so that the first rod is rotated to drive the second rod and the third rod to extend or retract synchronously.

[0114] Preferably, an operating ring 360 is fixedly provided on the rotating rod 330 to facilitate the rotating operation.

[0115] In one embodiment, a locking ring 370 is threadedly connected to the rotating rod 330 . The locking ring 370 is movable and abuts against an end surface of a movable one of the rotating rod 330 and the active block 322 .

[0116] That is, when the rotating rod 330 is threadedly connected to the active block 322, after the active block 322 moves to a specified position, the locking ring 370 is rotated to make its end face abut against the end face of the active block 322, thereby reducing the erroneous movement of the active block 322 under vibration and other conditions.

[0117] When the rotating rod 330 includes a first rod and a second rod that are threadedly connected, and the second rod is fixedly connected to the active block 322, the locking ring 370 is threadedly connected to the second rod. After the active block 322 moves to a specified position, the locking ring 370 is rotated so that its end face abuts against the end face of the first rod, thereby reducing the erroneous movement of the active block 322 under vibration and the like.

[0118] See also Figure 8-9 , Figure 8 This is a schematic diagram of the structure after the detachable assembly mechanism 500 and the mounting plate 130 are assembled in the embodiment of the present application; Fig. 9 for Figure 8 A schematic diagram of the structure from another perspective.

[0119] In one embodiment, the main frame 100 is provided with a mounting plate 130 along the second direction, and the mounting plate 130 and the supporting mechanism 400 are connected via a detachable assembly mechanism 500 .

[0120] The detachable assembly mechanism 500 includes a first fixing seat 510 disposed on the mounting plate 130 . A rotatable operating rod 520 is inserted into the first fixing seat 510 . A locking rod 530 perpendicular to the axis of the operating rod 520 is disposed at the end of the operating rod 520 .

[0121] The detachable assembly mechanism 500 further includes a second fixing seat 540 disposed at the end of the supporting mechanism 400 . The end surface of the second fixing seat 540 is provided with a locking hole 541 communicating with the interior thereof.

[0122] The locking rod 530 can be inserted into the second fixing seat 540 through the locking hole 541 , and the locking rod 530 can rotate synchronously with the operating rod 520 and abut against the inner end surface of the second fixing seat 540 .

[0123] In this method, the operating rod 520 is connected to the main frame 100 through the first fixing seat 510 of the detachable assembly mechanism 500, and the locking rod 530 at the end of the operating rod 520 is extended into the second fixing seat 540 provided on the support mechanism 400 and rotated, so as to realize the detachable connection between the main frame 100 and the support mechanism 400, and the operation is convenient. In addition, the various components of the detachable assembly mechanism 500 are connected to the main frame 100 or the support mechanism 400, which can avoid omission and loss, and is easy to carry and transport.

[0124] In one embodiment, one end of the support mechanism 400 has a positioning structure, and the main frame 100 is provided with a positioning component around the detachable connection between the main frame 100 and the support mechanism 400. The positioning component is adapted to the positioning structure of the support mechanism 400 to achieve assembly and positioning of the support mechanism 400 and the main frame 100, thereby improving the connection accuracy between the two and ensuring inspection accuracy.

[0125] In one embodiment, the end surface of the positioning assembly facing away from the main frame 100 is an inclined guide surface to guide the positioning structure of the support mechanism 400 into the positioning assembly, thereby improving assembly efficiency.

[0126] In one embodiment, the support mechanism 400 includes a support rod 410, the end surface of the support rod 410 is connected to the mounting plate 130, the support rod 410 is a circular column, and the positioning structure is a plane, that is, the circumferential curved surface of the end of the support rod 410 is changed into a plane in at least one direction. Preferably, the positioning structure is three planes. In this case, the positioning assembly preferably includes three limit bars 131 arranged in a square structure.

[0127] See also Fig.10 , Fig.10 Schematic diagram of the three-dimensional structure of the support mechanism 400 in the embodiment of the present application.

[0128] In one embodiment, the support mechanism 400 includes a support rod 410 , one end of which is provided with a second fixing seat 540 , and the other end of which is provided with a mounting seat 420 , and is connected to other devices via the mounting seat 420 .

[0129] In one embodiment, a height adjustment mechanism 430 is connected between the support rod 410 and the mounting seat 420 to adjust the height of the two support mechanisms 400 and ensure that the end surfaces are flush, thereby ensuring that the main frame 100 is level and ensuring inspection accuracy.

[0130] In one embodiment, the telescopic frame, locking mechanism 300 and supporting mechanism 400 all adopt a carbon fiber structure, utilizing the advantages of the carbon fiber structure such as high strength, high modulus, low density, corrosion resistance, good thermal stability and strong designability to improve the stability and reliability of the device.

[0131] See also Figure 11-12 , Fig.11 Schematic diagram of the layout of each detection unit in the embodiment of the present application; Fig.12 It is a connection diagram of each detection unit and the electrical control unit 3 in the embodiment of the present application.

[0132] In one embodiment, the detection angle of each detection unit is 80°-90°, preferably 87°, and the detection height is 350-450mm, preferably 400mm, so that the three detection units can jointly complete the three-dimensional inspection of the track within the range of 3.2mm.

[0133] Furthermore, in order to realize the image stitching of the three detection units, the left and right detection units use a line structured light laser in the 808nm band, and the middle detection unit 1 uses a line structured light laser in the 915nm band, so that the left, middle and right detection units can take pictures without interfering with each other.

[0134] In one embodiment, the electrical control unit 3 includes an electrical control system and an acquisition industrial computer. The electrical control system receives external encoder signals and external voltages, performs signal processing and voltage stabilization distribution, and provides power and coding signals to the left, middle and right three detection units respectively. The left, middle and right three detection units upload the collected track 3D data to the acquisition industrial computer respectively. At the same time, the acquisition industrial computer parses the mileage coding signal to realize the mileage coding of the current collected position data. Finally, the three-dimensional track inspection data of the three detection units are spliced ​​and sent to the user's host computer for data interaction.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A three-dimensional track inspection device, characterized in that: include: A telescopic frame, the telescopic frame comprising a main frame and a sub-frame slidably connected to an end of the main frame, the sub-frame being slidable along a first direction, and the telescopic frame having an expanded state; The main frame is provided with a first locking block, and the sub-frame is provided with a second locking block. In the unfolded state, the first locking block and the second locking block are locked and clamped by a locking mechanism; The first locking block is spaced a first distance from the end face of the end where the main frame is connected to the sub-frame, or the second locking block is spaced a first distance from the end face where the sub-frame is connected to the main frame, the main frame and the sub-frame are connected via a slider and a slide rail, and the slider covers the first distance; The main frame is connected to a middle detection unit in a second direction perpendicular to the first direction, and the size of the main frame in the second direction is adapted to the top surface size of the middle detection unit. The sub-frame is connected to a side detection unit in a second direction perpendicular to the first direction, and the size of the sub-frame in the second direction is adapted to the top surface size of the side detection unit.

2. The three-dimensional track inspection device according to claim 1, characterized in that: The first locking block includes a first locking hole, the second locking block includes a second locking hole, and in the unfolded state, the first locking hole is connected to the second locking hole; The locking mechanism includes a connecting rod and an operating assembly and a locking member respectively arranged at both ends of the connecting rod. The connecting rod can pass through the first locking hole and the second locking hole in sequence, and the operating assembly and the locking member can clamp the first locking block and the second locking block.

3. The three-dimensional track inspection device according to claim 2, characterized in that: The second locking block has a first opening extending along the first direction and with the opening direction away from the connecting end of the sub-frame and the main frame, the second locking hole is connected to the first opening, and the connecting rod can enter and exit the second locking hole through the first opening; The operating component is in contact with the first locking block, and the locking piece is in contact with the second locking block. The contact surface of the operating component and the corresponding end surface of the first locking block are matching step surfaces, and the contact surface of the locking piece and the corresponding end surface of the second locking block are matching conical surfaces.

4. The three-dimensional track inspection device according to claim 2, characterized in that: An elastic reset member is provided between the operating assembly and the locking member, and the elastic reset member applies a thrust to the locking member and the operating assembly, so that the two have a tendency to depart from the first locking block and the second locking block.

5. The three-dimensional track inspection device according to claim 2, characterized in that: The operating assembly includes a transmission assembly and a rotating rod. The transmission assembly is arranged at one end of the connecting rod. The rotating rod is connected to the transmission assembly. The rotating rod can rotate and drive the transmission assembly to move so as to clamp or release the first locking block and the second locking block with the locking member.

6. The three-dimensional track inspection device according to claim 5, characterized in that: The transmission assembly comprises a housing, an active block and a passive block stacked in the housing, the active block is connected to the rotating rod, and the passive block is connected to the connecting rod; The housing is fixed on the first locking block, and the connecting surface between the housing and the first locking block is a step surface; The active block and the passive block are both wedge-shaped blocks, and the two are arranged in a staggered manner through inclined surfaces.

7. The three-dimensional track inspection device according to claim 6, characterized in that: The housing has a first escape opening at one end facing away from the first locking block, and has a second escape opening perpendicular to the opening direction of the first escape opening; The passive block is arranged away from the first locking block, and at least part of the passive block can extend out of the shell through the first avoidance opening; the active block and the rotating rod are connected through the second avoidance opening, and at least part of the active block can extend out of the shell through the second avoidance opening.

8. The three-dimensional rail inspection device according to claim 1, characterized in that: It also includes two symmetrically arranged support mechanisms, one end of which is detachably connected to the main frame, and the other end of which is connected to a device that can be moved on a track; The distance between the ends of the two supporting mechanisms connected to the main frame is smaller than the distance between the ends connected to the equipment.

9. The three-dimensional rail inspection device according to claim 8, characterized in that: The main frame is provided with a mounting plate along the second direction, and the mounting plate and the supporting mechanism are connected by a detachable assembly mechanism; the detachable assembly mechanism comprises a first fixing seat provided on the mounting plate, a rotatable operating rod is plugged into the first fixing seat, and a locking rod perpendicular to the axis of the operating rod is provided at the end of the operating rod; The detachable assembly mechanism further comprises a second fixing seat arranged at the end of the supporting mechanism, and the end surface of the second fixing seat is provided with a locking hole communicating with the interior thereof; The locking rod can be inserted into the second fixing seat through the locking hole, and the locking rod can rotate synchronously with the operating rod and abut against the inner end surface of the second fixing seat.

10. The three-dimensional rail inspection device according to claim 8, characterized in that: One end of the support mechanism has a positioning structure, and the main frame is provided with a positioning component around the detachable connection between the main frame and the support mechanism, and the positioning component is adapted to the positioning structure of the support mechanism; and the end surface of the positioning component facing away from the main frame is an inclined guide surface to guide the positioning structure of the support mechanism into the positioning component.

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