Track inspection equipment

Abstract

The present application provides a track detection device, which belongs to the field of track detection technology. In order to solve the problem that the detection accuracy and reliability of the track detection equipment in the turnout area are low, and the maintenance cost is high due to easy damage, the present application provides a track detection device, including a detection module, a running mechanism and a turnout mechanism; the turnout mechanism includes a first guide assembly and a second guide assembly; the first guide assembly includes a first connecting shaft and a guide wheel, and the guide surface of the guide wheel is in contact with the side of the turnout core under the drive of the first connecting shaft, and can rotate around the first connecting shaft; the second guide assembly includes a second connecting shaft and a roller, and the drum surface of the roller contacts the side of the turnout core with the second connecting shaft, and rotates under the guidance of the slope of the side of the turnout core. The present application improves the stability of the equipment passing through the turnout area through the turnout mechanism, reduces losses, thereby improving the detection accuracy and reliability of the turnout area, and reducing maintenance costs.

Description

Technical Field

[0001] The present application relates to the field of track detection technology, and in particular to track detection equipment. Background Art

[0002] Track inspection equipment is used for track inspections, such as flaw detection, profiling, and track inspection. It typically includes two symmetrically arranged inspection modules to simultaneously inspect two rails. Furthermore, because the inspection environment requires high stability, the running mechanism of the track inspection equipment differs from that of a train. Its running mechanism includes running wheels and supporting wheels. Specifically, running wheels are located below the inspection module, and supporting wheels are located to the side. The running wheels are used to run on the top surface of the rails, and the supporting wheels are positioned against the inner surface of the rails to achieve position limiting, providing a stable environment for inspection.

[0003] When the track inspection equipment detects the condition of the rails, it runs close to the railway track and sometimes needs to pass Figure 1 The railway turnout shown is a line connection device that allows locomotives and vehicles to transfer from one track to another. The line is complex and its main component is the switch core for achieving guidance.

[0004] In order to ensure that the track inspection equipment can pass through the switch smoothly and turn to the rail that needs to be inspected, a switch mechanism is usually installed at the front and rear ends of the track inspection equipment. Figure 2 As shown, the track inspection device consists of a fixed bracket 3 and guide blocks 4, with the switch mechanism B symmetrically mounted on both sides of the inspection module A. When the device passes through the switch area, the guide blocks 4 of the switch mechanism first contact the tip of the switch core. At the moment of contact, the guide blocks 4 move at a certain angle, following the contact surface. The track inspection device will follow the angle of the guide blocks 4 to move to the rail to be inspected.

[0005] However, the existing switch mechanism has a large guiding resistance, resulting in a short lifespan. In addition, the guiding is unstable and the vibration is large, which makes the track detection equipment unstable and produces vibration / jumping, which in turn causes incomplete and deviation in the rail detection of the switch area. At the same time, it is also easy to cause damage to the internal electronic components of the detection equipment and loosen the cable joints, affecting the detection accuracy and the life of the detection equipment. Summary of the Invention

[0006] The present application aims to address the existing issues of low accuracy and reliability of track detection equipment in turnout areas, as well as high maintenance costs due to susceptibility to damage. Therefore, the present application provides track detection equipment that utilizes a turnout mechanism to improve the stability of the equipment in turnout areas, reduce wear and tear, and thus improve detection accuracy and reliability in turnout areas, while also reducing maintenance costs.

[0007] The embodiment of the present application provides a track detection device, including a detection module, a traveling mechanism, and a switch mechanism;

[0008] The detection module is used to obtain rail data;

[0009] There are two walking mechanisms, which are symmetrically arranged at both ends of the detection module. The walking mechanism includes a first mounting frame and a walking wheel arranged below the first mounting frame. The walking wheel is used to contact the rail surface and support the detection module to walk on the rail.

[0010] There are two switch mechanisms, each of which is connected to two first mounting frames; and

[0011] The switch mechanism includes a second mounting frame, and a first guide assembly and a second guide assembly sequentially arranged on the second mounting frame along the length direction of the second mounting frame;

[0012] The first guide assembly is disposed at an end of the second mounting frame, and includes a first connecting shaft and a guide wheel rotatably mounted on the first connecting shaft. The first connecting shaft is vertically disposed relative to a horizontal plane, and the guide surface of the guide wheel is driven by the first connecting shaft to contact the side surface of the branch core and can rotate around the first connecting shaft.

[0013] The second guide assembly includes a second connecting shaft and a roller rotatably mounted on the second connecting shaft. The second connecting shaft is horizontally arranged and tilts to one side as it moves away from the first guide assembly. The tilt angle is ≤ 1 / 2 of the switch core angle. The roller has a first length and covers the second connecting shaft. The drum surface of the roller contacts the side surface of the switch core along with the second connecting shaft and rotates under the guidance of the slope of the side surface of the switch core.

[0014] By adopting the above technical solution, by arranging walking mechanisms at the front and rear ends of the detection module, the walking stability of the detection module is improved, and the installation of the switch mechanism is facilitated; the two-step guiding deflection of the first guide component and the second guide component of the switch mechanism can achieve complete guidance of the rail to be detected, which can reduce the impact force, thereby improving the guiding stability, and improving the position state stability of the detection module when passing through the switch area, thereby improving the detection accuracy and reliability of the device for the switch area, and reducing maintenance costs; and, when passing through the switch, the guide wheel of the first guide component of this mechanism first passes through the harmful space to contact the switch core tip and guides it to the rail to be detected, and the guide surface of the guide wheel is used to and rotate to achieve tangential contact with the switch core, so that the guide wheel will rotate to relieve the friction when it is subjected to friction, thereby further improving the guiding stability; since the switch core has a slope, that is, it is wider at the bottom and narrower at the top and forms an angle as a whole, after the guide wheel passes the front end of the switch core, the roller of the second guide assembly touches the slope of the switch core to achieve rolling through, and achieves contact with the switch core along a spiral line, which further improves the guiding stability and is conducive to the detection module to pass through the harmful space and the front end of the switch core in the switch area smoothly and stably under the traction of this mechanism, thereby improving the detection reliability; at the same time, the guide wheel of the first guide assembly and the roller of the second guide assembly both rotate to pass through the switch, which can slow down the loss, thereby extending the service life of this mechanism and reducing maintenance costs.

[0015] In some embodiments, a plurality of bearings are sleeved on the second connecting shaft, and the roller is sleeved on the plurality of bearings.

[0016] The above technical solution improves the stability of the roller's rotation along the switch core slope and improves the overall structural strength of the second guide assembly, thereby increasing the bearing capacity of the mechanism and further improving the stability of the detection module's movement in the switch area.

[0017] In some embodiments, two of the first guide assembly and two of the second guide assembly are provided, and are symmetrically arranged at both ends of the second mounting frame.

[0018] The adoption of the above technical solution facilitates the mechanism to guide the crossing of the turnout in both the forward and backward directions, thereby improving the flexibility of the device during detection.

[0019] In some embodiments, the first guide assembly and the end of the second guide assembly are separated by a first distance, and the first distance is proportional to the inclination angle of the second connecting shaft of the second guide assembly.

[0020] By adopting the above technical solution, the distance between the first guide assembly and the second guide assembly is proportional to the switch core angle, so that the larger the switch core angle, the later the second guide assembly contacts the switch core, and the greater the guiding deflection of the first guide assembly on the mechanism, thereby reducing the deviation angle between the second guide assembly and the switch core, thereby improving the guiding stability of the second guide assembly, and improving the position state stability of the detection module when passing through the switch area, thereby improving the detection accuracy and reliability of this equipment for the switch area, and reducing maintenance costs.

[0021] In some embodiments, the second mounting bracket is connected to the first guide assembly via a mounting seat;

[0022] The mounting base is L-shaped, and one end of the mounting base is connected to the second mounting frame, and the other end is located in front of the end of the second mounting frame;

[0023] The first connecting shaft of the first guide assembly is vertically arranged at the end of the mounting seat located in front of the end of the second mounting bracket.

[0024] By adopting the above technical solution, the first guide assembly can be separated from the second mounting frame by disassembling and separating the mounting seat and the second mounting frame, thereby facilitating maintenance.

[0025] In some embodiments, both ends of the second connecting shaft are provided with shaft covers, the shaft covers have arc guide surfaces, and the edges of the arc guide surfaces are flush with the edges of the roller;

[0026] A connecting column is provided between the shaft cover and the second mounting bracket, and the second connecting shaft is connected to the second mounting bracket through the shaft cover and the connecting column.

[0027] By adopting the above technical solution, the arc guide surface of the shaft cover is connected with the roller, which improves the stability of the mechanism when it switches from contacting the switch core through the first guide component to contacting the switch core through the second guide component, thereby further improving the guidance stability of the mechanism and the position stability of the detection module when passing through the switch area, thereby improving the detection accuracy and reliability of the equipment for the switch area and reducing maintenance costs.

[0028] In some embodiments, the second guide assembly has a proximal end and a distal end disposed opposite each other along the first length, and the proximal end is proximal to the first guide assembly;

[0029] The second mounting frame is also provided with a supporting wheel for abutting against the side of the rail, the supporting wheel is arranged corresponding to the distal end of the second guide assembly, and the abutting surface of the supporting wheel protrudes from the distal edge of the second guide assembly in the direction toward the side of the rail.

[0030] By adopting the above technical solution, a supporting wheel is integrated, and the supporting wheel protrudes relative to the first guide assembly and the second guide assembly, so that when the second guide assembly passes through the switch core and is located on the conventional straight section rail, the supporting wheel will replace the first guide assembly and the second guide assembly to contact the rail, so that the first guide assembly and the second guide assembly only work in the switch area, slowing down the loss, extending the service life, reducing the maintenance cost, and at the same time, avoiding affecting the detection module walking on the conventional rail.

[0031] In some embodiments, the horizontal cross-section of the second mounting frame is trapezoidal;

[0032] The first guide assembly, the second guide assembly and the supporting wheel are all arranged below the second mounting frame, and the guide surface of the first guide assembly, the cylindrical surface of the second guide assembly and the abutment surface of the supporting wheel all protrude from the lateral edge of the second mounting frame.

[0033] By adopting the above technical solution, the second mounting frame can be as close as possible to the first guide assembly, the second guide assembly and the supporting wheel, thereby improving the overall compactness and structural strength of the device.

[0034] 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 description in the specification of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a structural diagram of the railway turnout area;

[0036] Figure 2 This is a structural diagram of the existing track detection device and the existing switch mechanism after assembly;

[0037] FIG3( a ) is a schematic structural diagram of an embodiment of the present application;

[0038] FIG3( b ) is a partially enlarged schematic diagram of the structure of an embodiment of the present application;

[0039] Figure 4 This is a structural diagram of a turnout mechanism in an embodiment of the present application;

[0040] Figure 5 This is a top perspective schematic diagram of a turnout mechanism in an embodiment of the present application;

[0041] Figure 6 This is an exploded schematic diagram of a turnout mechanism in an embodiment of the present application;

[0042] Figure 7 This is an exploded schematic diagram of the second guide assembly of the switch mechanism in an embodiment of the present application, wherein the connecting column is omitted;

[0043] Description of reference numerals:

[0044] 1. Branch core; 2. Harmful space; 3. Fixed bracket; 4. Guide block;

[0045] 100. Detection module;

[0046] 200, traveling mechanism; 210, traveling wheel;

[0047] 300, crossing switch mechanism;

[0048] 310, second mounting bracket; 311, mounting base; 312, connecting column;

[0049] 320, first guide assembly; 321, first connecting shaft; 322, guide wheel; 323, end cover;

[0050] 330, second guide assembly; 331, second connecting shaft; 332, roller; 333, bearing; 334, spacer; 335, shaft cover;

[0051] 340. Support wheel; 341. Third connecting shaft; 342. Support wheel bearing; 343. Support wheel end cover. DETAILED DESCRIPTION

[0052] The following specific embodiments illustrate the implementation of the present application. 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 this 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 an in-depth understanding of the present application, the following description will contain 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 unless there is a conflict.

[0053] 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 or explained in subsequent drawings.

[0054] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0055] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and 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 used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, 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.

[0056] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0057] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0058] See Figure 1-2 , Figure 1 This is a structural diagram of the railway turnout area; Figure 2 This is a structural diagram of existing track detection equipment.

[0059] It should be noted that during the operation of the existing switch mechanism B, the switch mechanism B will first contact the tip of the switch core 1 in the switch area. Since the existing detection module A is manually pushed or towed to a power trolley, when passing through the switch area, the switch mechanism B will generate a large impact at the moment it contacts the tip of the switch core 1 to complete the guidance, which will cause vibration / jumping to the detection module A, thereby causing incomplete and deviation detection of the rails in the switch area.

[0060] At the same time, the vibration / jumping of detection module A may also damage the electronic components inside the device, with a high probability of directly causing the device to stop working; or cause the cable connector to loosen, resulting in abnormal communication, increasing the maintenance time of on-site staff and greatly increasing the time cost.

[0061] Moreover, when the existing switch mechanism B passes the tip of the switch core 1 during operation, the guide block 4 rubs hard against the slope of the switch core 1, which aggravates the wear of the guide surface of the guide block 4, shortening the after-sales maintenance cycle and increasing costs.

[0062] Please refer to Figures 3(a)-(b), Figure 3(a) is a structural schematic diagram of an embodiment of the present application; Figure 3(b) is a partially enlarged structural schematic diagram of an embodiment of the present application.

[0063] In response to the above problems, an embodiment of the present application provides a track detection device with high guiding stability and low maintenance cost.

[0064] Specifically, the device includes a detection module 100 , a traveling mechanism 200 and a switch mechanism 300 .

[0065] The detection module 100 is used to obtain rail data and can adopt the detection module 100 in existing track detection equipment, usually using laser or camera to achieve non-contact detection.

[0066] Two running mechanisms 200 are provided, symmetrically arranged at both ends of the detection module 100, which improves the running stability of the detection module 100 and facilitates the installation of the switch mechanism 300. The running mechanism 200 includes a first mounting frame and running wheels arranged below the first mounting frame. The running wheels are used to contact the rail surface and support the detection module 100 to travel on the rail.

[0067] Two switch mechanisms 300 are provided, and are respectively connected to the two first mounting frames.

[0068] See Figure 4-5 , Figure 4 Schematic diagram of the structure of the switch mechanism 300 in the embodiment of the present application; Figure 5 1 is a top perspective diagram of the switch mechanism 300 in an embodiment of the present application.

[0069] Specifically, the switch mechanism 300 includes a second mounting frame 310, and a first guide assembly 320 and a second guide assembly 330 sequentially arranged on the second mounting frame 310 along the length direction of the second mounting frame 310, and the first guide assembly 320 is arranged at the end of the second mounting frame 310. The two-step guiding deflection of the first guide assembly 320 and the second guide assembly 330 is used to fully guide the rail to be inspected, which can reduce the impact force, thereby improving the guiding stability and improving the position state stability of the detection module 100 when passing through the switch area, thereby improving the detection accuracy and reliability of the device for the switch area and reducing maintenance costs.

[0070] In one embodiment, two first guide assemblies 320 and two second guide assemblies 330 are provided and symmetrically arranged at both ends of the second mounting frame 310, so that the device can be guided through the switch in both the forward and backward directions, thereby improving the flexibility of the device during detection.

[0071] Please combine Figure 4-5 , and see Figure 6 , Figure 6 Schematic diagram of an explosion of the switch mechanism 300 in an embodiment of the present application.

[0072] In one embodiment, the first guide assembly 320 includes a first connecting shaft 321 and a guide wheel 322 rotatably mounted on the first connecting shaft 321. The first connecting shaft 321 is disposed vertically relative to a horizontal plane. Driven by the first connecting shaft 321, the guide surface of the guide wheel 322 contacts the side surface of the switch core 1 and can rotate about the first connecting shaft 321. In other words, as the mechanism moves, the guide wheel 322 rolls against the side surface of the switch core 1.

[0073] In this method, when passing through a turnout, the guide wheel 322 of the first guide assembly 320 of the mechanism first passes through the hazardous space 2, contacts the tip of the switch core 1, and guides it to the rail to be inspected. The guide surface and self-rotation of the guide wheel 322 achieve tangential contact with the switch core 1, causing the guide wheel 322 to rotate when subjected to friction, relieving the frictional force and further improving guidance stability. Furthermore, the self-rotation of the guide wheel 322 through the turnout reduces wear on the guide wheel 322, thereby extending the service life of the mechanism and reducing maintenance costs.

[0074] In one embodiment, the first guide assembly 320 further includes an end cap 323 connected to the end of the first connecting shaft 321 to prevent the guide wheel 322 from detaching from the first connecting shaft 321. The end cap 323 covers most of the bottom surface of the guide wheel 322, thereby protecting the guide wheel 322 and extending its service life. Preferably, both the guide wheel 322 and the end cap 323 are made of high-strength steel.

[0075] In one embodiment, the second mounting bracket 310 is connected to the first guide assembly 320 via a mounting base 311 .

[0076] The mounting base 311 is L-shaped, with one end of the mounting base 311 connected to the second mounting frame 310 and the other end located in front of the end of the second mounting frame 310. The first connecting shaft 321 of the first guide assembly 320 is perpendicularly disposed at the end of the mounting base 311 located in front of the end of the second mounting frame 310. This allows the mounting base 311 and the second mounting frame 310 to be disassembled and separated, allowing the first guide assembly 320 to be separated from the second mounting frame 310 for easy maintenance.

[0077] In one embodiment, the second guide assembly 330 includes a second connecting shaft 331 and a roller 332 rotatably mounted on the second connecting shaft 331. The second connecting shaft 331 is horizontally disposed and tilts toward the side as it moves away from the first guide assembly 320, with an inclination angle ≤ 1 / 2 of the angle a of the switch core 1. This ensures smooth passage of the second guide assembly 330 through the switch core 1. The roller 332 has a first length and covers the second connecting shaft 331. The roller surface of the roller 332 contacts the side of the switch core 1 along with the second connecting shaft 331, and the roller rotates guided by the slope of the side of the switch core 1. The roller 332 is preferably made of high-strength steel to extend its service life.

[0078] It should be noted that the switch core 1 not only has a side slope to guide the train to turn, but the side slope also has a slope, that is, the switch core 1 is wider at the bottom and narrower at the top, forming an overall angle.

[0079] Therefore, after the guide wheel 322 passes the front end of the switch core 1, the roller 332 of the second guide assembly 330 is in line contact with the switch core 1, which further improves the guiding stability and facilitates the track detection equipment to smoothly and stably pass through the harmful space 2 and the front end of the switch core 1 in the turnout area under the traction of this mechanism, thereby improving the detection reliability.

[0080] Furthermore, since the inclined surface of the switch core 1 has a slope, the roller 332 passes through the switch core 1 while rotating, so that the contact line between the roller 332 and the switch core 1 is a spiral line around the surface of the roller 332. As a result, the roller 332 and the switch core 1 are not in the same position each time they make frictional contact, which greatly reduces the wear of the roller 332, thereby extending the service life of the mechanism and reducing maintenance costs.

[0081] It can be understood that, in order to achieve the corresponding inclination of the roller 332 and the fork core 1, the inclination direction of the second connecting shaft 331 is toward the outside of its forward direction.

[0082] In one embodiment, shaft covers 335 are provided at both ends of the second connecting shaft 331. The shaft covers 335 have arc guide surfaces, and the edges of the arc guide surfaces are flush with the edges of the roller 332. The arc guide surfaces of the shaft covers 335 are connected with the roller 332, which improves the stability of the mechanism when it switches from contact with the switch core 1 through the first guide assembly 320 to contact with the switch core 1 through the second guide assembly 330, thereby further improving the guiding stability of the mechanism.

[0083] In one embodiment, a connecting column 312 is provided between the shaft cover 335 and the second mounting frame 310, and the second connecting shaft 331 is connected to the second mounting frame 310 through the shaft cover 335 and the connecting column 312, so that the second guide assembly 330 can be separated from the second mounting frame 310 by disassembling and separating the connecting column 312 and the second mounting frame 310, thereby facilitating maintenance.

[0084] Preferably, the connecting column 312 is threadedly connected to the second mounting bracket 310 .

[0085] In one embodiment, the second guide assembly 330 has a proximal end and a distal end disposed opposite each other along the first length, with the proximal end being proximal to the first guide assembly 320 .

[0086] The second mounting frame 310 is further provided with a wheel 340 for abutting against the side of the rail. The wheel 340 is provided corresponding to the distal end of the second guide assembly 330, and the abutting surface of the wheel 340 protrudes from the distal edge of the second guide assembly 330 in the direction toward the side of the rail, preferably by 2-5 mm.

[0087] In this manner, the supporting wheel 340 of the mechanism can replace the supporting wheel 340 of the track detection equipment, and the supporting wheel 340 protrudes relative to the first guide assembly 320 and the second guide assembly 330, so that when the second guide assembly 330 passes through the switch core 1 and is located on the conventional straight section rail, the supporting wheel 340 will replace the first guide assembly 320 and the second guide assembly 330 to contact the rail, that is, the first guide assembly 320 and the second guide assembly 330 only work in the switch area, thereby reducing wear and tear, extending service life, and reducing maintenance costs, while avoiding affecting the track detection equipment from running on conventional rails.

[0088] It is understandable that when there are two first guide assemblies 320 and two second guide assemblies 330 and they are symmetrically arranged at both ends of the second mounting frame 310 , the wheel 340 is arranged between the two groups of first guide assemblies 320 and second guide assemblies 330 .

[0089] In one embodiment, the supporting wheel 340 is connected to the second mounting frame 310 via a third connecting shaft 341. A supporting wheel bearing 342 is sleeved on the third connecting shaft 341, and the supporting wheel is connected to the supporting wheel bearing 342 to improve its rotational stability and reliability. Preferably, a supporting wheel end cap 343 is provided at the bottom of the supporting wheel 340 to prevent the supporting wheel 340 from disengaging from the supporting wheel bearing 342 and the third connecting shaft 341, and to provide protection for the bottom of the supporting wheel 340.

[0090] In one embodiment, the diameter of the guide wheel 322 is 18 mm, the diameter of the roller 332 is 21 mm, and the diameter of the supporting wheel 340 is 35 mm, so that the guide wheel 322, the roller 332 and the supporting wheel 340 can pass through the switch smoothly in sequence.

[0091] In one embodiment, the horizontal cross-section of the second mounting bracket 310 is trapezoidal.

[0092] The first guide assembly 320, the second guide assembly 330 and the supporting wheel 340 are all arranged below the second mounting frame 310, and the guide surface of the first guide assembly 320, the cylindrical surface of the second guide assembly 330 and the supporting wheel 340 all protrude from the lateral edge of the second mounting frame 310, so that the second mounting frame 310 can be as close to the first guide assembly 320, the second guide assembly 330 and the supporting wheel 340 as possible, thereby improving the overall compactness of the device, so that the entire mechanism can be closer to the side of the rail, and the structural strength of the mechanism can be improved, thereby improving the guiding stability.

[0093] In one embodiment, the ends of the first guide assembly 320 and the second guide assembly 330 are separated by a first distance L, where L is a buffer area for buffering the transition harmful space, and L≤the length of the harmful space. The overall length from the front end of the first guide assembly 320 to the end of the second guide assembly 330 is lengthened by the first distance L, so that the first guide assembly 320 and the second guide assembly 330 are smoothly connected, and the second guide assembly 330 cuts into the switch core 1 at a smaller angle, which facilitates the two to pass through the switch, and allows the wheel 340 to pass through the harmful space smoothly.

[0094] See Figure 7 , Figure 7 Schematic diagram of an explosion of the second guide assembly 330 in the embodiment of the present application, in which the connecting column 312 is omitted.

[0095] In one embodiment, a plurality of bearings 333 are sleeved on the second connecting shaft 331, and the roller 332 is sleeved on the plurality of bearings 333, which can improve the stability of the roller 332 rotating along the slope of the switch core 1, and improve the overall structural strength of the second guide assembly 330, thereby improving the bearing capacity of the mechanism, and further improving the stability of the detection module 100 moving in the switch area.

[0096] It should be noted that under normal conditions, the detection module 100 of the track detection equipment is supported on the rails by the running wheels below it, but when passing through the switch area, the running wheels will be skewed to a certain extent due to turning. At this time, the present application provides additional assistance through the second guide component 330 to achieve the support of the detection module 100 and improve its stability and safety when passing through the switch area.

[0097] In one embodiment, a spacer sleeve 334 is provided between two adjacent bearings 333 to ensure the stability of the position of each bearing 333 on the second connecting shaft 331 and effectively reduce the direct friction between the bearings 333, thereby extending the service life of the sleeve, reducing vibration, and improving rotation stability and reliability.

[0098] 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 them. 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A track detection device, characterized in that: It includes detection module, traveling mechanism and switch mechanism; The detection module is used to obtain rail data; There are two walking mechanisms, which are symmetrically arranged at both ends of the detection module. The walking mechanism includes a first mounting frame and a walking wheel arranged below the first mounting frame. The walking wheel is used to contact the rail surface and support the detection module to walk on the rail. There are two switch mechanisms, each of which is connected to two first mounting frames; and The switch mechanism includes a second mounting frame, and a first guide assembly and a second guide assembly sequentially arranged on the second mounting frame along the length direction of the second mounting frame; The first guide assembly is disposed at an end of the second mounting frame, and includes a first connecting shaft and a guide wheel rotatably mounted on the first connecting shaft. The first connecting shaft is vertically disposed relative to a horizontal plane, and the guide surface of the guide wheel is driven by the first connecting shaft to contact the side surface of the branch core and can rotate around the first connecting shaft. The second guide assembly includes a second connecting shaft and a roller rotatably mounted on the second connecting shaft. The second connecting shaft is horizontally arranged and tilts to one side as it moves away from the first guide assembly. The tilt angle is ≤ 1 / 2 of the switch core angle. The roller has a first length and covers the second connecting shaft. The drum surface of the roller contacts the side surface of the switch core along with the second connecting shaft and rotates under the guidance of the slope of the side surface of the switch core.

2. The track detection device according to claim 1, characterized in that: The second connecting shaft is sleeved with a plurality of bearings, and the roller is sleeved on the plurality of bearings.

3. The track detection device according to claim 1, characterized in that: There are two first guide assemblies and two second guide assemblies, which are symmetrically arranged at both ends of the second mounting frame.

4. The track detection device according to claim 1, characterized in that: The ends of the first guide assembly and the second guide assembly are separated by a first distance, and the first distance is proportional to the inclination angle of the second connecting shaft of the second guide assembly.

5. The track detection device according to claim 1, characterized in that: The second mounting frame is connected to the first guide assembly via a mounting seat; The mounting base is L-shaped, and one end of the mounting base is connected to the second mounting frame, and the other end is located in front of the end of the second mounting frame; The first connecting shaft of the first guide assembly is vertically arranged at the end of the mounting seat located in front of the end of the second mounting bracket.

6. The track detection device according to claim 1, characterized in that: Both ends of the second connecting shaft are provided with shaft covers, and the shaft covers have arc guide surfaces, and the edges of the arc guide surfaces are flush with the edges of the roller; A connecting column is provided between the shaft cover and the second mounting bracket, and the second connecting shaft is connected to the second mounting bracket through the shaft cover and the connecting column.

7. The track detection device according to any one of claims 1 to 5, characterized in that: The second guide assembly has a proximal end and a distal end disposed opposite to each other along the first length, and the proximal end is adjacent to the first guide assembly; The second mounting frame is also provided with a supporting wheel for abutting against the side of the rail, the supporting wheel is arranged corresponding to the distal end of the second guide assembly, and the abutting surface of the supporting wheel protrudes from the distal edge of the second guide assembly in the direction toward the side of the rail.

8. The track detection device according to claim 7, characterized in that: The horizontal cross-section of the second mounting frame is trapezoidal; The first guide assembly, the second guide assembly and the supporting wheel are all arranged below the second mounting frame, and the guide surface of the first guide assembly, the cylindrical surface of the second guide assembly and the abutment surface of the supporting wheel all protrude from the lateral edge of the second mounting frame.

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