Towed rail profile corrugation detection device

Abstract

This application provides a towed rail profile corrugation detection device, belonging to the field of railway rail inspection technology. Addressing the problem that existing towed rail profile corrugation detection devices are complex in structure and inconvenient to transport, this application provides a towed rail profile corrugation detection device, including two symmetrically arranged detection units for detecting rail profile corrugation; a connecting rod connecting the two detection units; and a towing mechanism and a pressure applying mechanism for connection to a tractor. The towing mechanism is detachably connected to the middle of the tractor and the middle of the connecting rod. Two pressure applying mechanisms are symmetrically arranged and correspond to the detection units. The pressure applying mechanisms are detachably connected to the side of the tractor and the detection units, and include elastic elements that apply vertical downward pressure to the detection units. This application, through its completely independently detachable towing and pressure applying mechanisms, facilitates the disassembly of the detection device into individual modules, thereby reducing the overall size, improving its regularity, and facilitating transportation.

Description

Technical Field

[0001] This application relates to the field of railway rail inspection technology, and in particular to a towed rail profile corrugation inspection device. Background Technology

[0002] Rapid inspection of rail profile and corrugation is an important research direction in railway engineering. Traditional rail inspection is carried out manually, which is slow and difficult to implement. The efficiency and accuracy of the inspection are gradually failing to meet the needs of railway maintenance operations. Based on the traditional manual inspection methods for rail condition, a self-propelled rail profile and corrugation inspection trolley has been developed. It can inspect rails at a relatively slow speed by pushing them by hand and provide an accurate inspection report. However, the inspection accuracy gradually decreases at higher inspection speeds, and it is not possible to carry out inspections more efficiently by towing them with a vehicle.

[0003] To address the aforementioned issues, existing technologies have also provided corresponding improvements. For example, Chinese patent application CN206219922U, published on June 6, 2017, discloses a track inspection trolley, which includes a base frame, wheels, measuring devices, a lifting device, a locking device, and a traction device. Two wheels are respectively installed on the left and right sides of the base frame and connected to it, used to support the trolley on the rails when it is lowered, allowing the trolley to move and operate on the rails. Two measuring devices are respectively installed directly above the left and right rails and fixed to the base frame, used for online detection of the rail profile and corrugation through a non-contact detection method. The lifting device is used to lift the base frame to a predetermined height above the rails or lower the base frame onto the rails. The locking device is used to lock the base frame when it is lifted to a predetermined height above the rails. The traction device is installed on the front side of the base frame and fixedly connected to it, used to pull the track inspection trolley lowered onto the rails to move with the rail repair vehicle. The drawback of this solution is that the traction structure is complex and not convenient for transportation and carrying. Utility Model Content

[0004] The purpose of this application is to solve the problem that existing towed rail profile corrugation detection devices are complex in structure and inconvenient to transport. Therefore, this application provides a towed rail profile corrugation detection device, which, through a completely independently detachable towing mechanism and pressure mechanism, facilitates the disassembly of the detection device into individual modules, thereby reducing the overall size and improving its regularity, making it easier to transport.

[0005] This application provides a device for detecting corrugation in the profile of a towed rail, comprising:

[0006] Two symmetrically arranged detection units are used for detecting rail profile corrugation.

[0007] A connecting rod linking the two detection units; and,

[0008] A towing mechanism and a pressure applying mechanism are used for connection with a tractor. The towing mechanism is detachably connected to the middle of the tractor and the middle of the connecting rod. Two pressure applying mechanisms are symmetrically arranged and correspond to the detection unit. The pressure applying mechanism is detachably connected to the side of the tractor and the detection unit. The pressure applying mechanism includes an elastic element and applies vertical downward pressure to the detection unit through the elastic element.

[0009] The above technical solution utilizes a detachable connection between the towing mechanism, the pressure applying mechanism, the tractor, the connecting rod, and the detection unit. This facilitates disassembly into individual modules, reducing overall size and improving neatness, thus simplifying transportation. During towing, the towing mechanism connects the middle of the tractor and the middle of the connecting rod, initially ensuring traction stability. Simultaneously, two symmetrically arranged pressure applying mechanisms apply pressure to the two detection units, ensuring a stable vertical distance between the detection units and the rails, thereby guaranteeing detection accuracy. Furthermore, the two pressure applying mechanisms, connected to the sides of the tractor and the two detection units respectively, further enhance traction stability. The pressure applying mechanism uses elastic elements to apply pressure to the detection units, resulting in a simple structure, low cost, and adaptive pressure application that requires no manual adjustment and is easy to operate.

[0010] In some embodiments, the towing mechanism includes a first mounting base, a second mounting base, and a towing rod. The first mounting base is disposed in the middle of the connecting rod, and the second mounting base is disposed in the middle of the rear of the tractor. The two ends of the towing rod are detachably connected to the first mounting base and the second mounting base, respectively.

[0011] The above technical solution achieves towing through the cooperation of a single towing rod and the first and second mounting bases. It has a simple structure, small size, and is easy to assemble, thus improving the ease of operation.

[0012] In some embodiments, the end of the tow rod is provided with a connecting ring, and both the first mounting base and the second mounting base have two oppositely arranged opening connecting portions. The tow rod is detachably connected to the first mounting base or the second mounting base by inserting the connecting ring into the two opening connecting portions and inserting a ball head locking pin.

[0013] By adopting the above technical solution, the tow rod and the first and second mounting seats can be detachably connected through the ball head locking pin, which is convenient to operate and reliable in connection.

[0014] In some embodiments, the pressure applying mechanism includes a pressure plate, a pressing component, and a third mounting base. The pressure plate is disposed on the detection unit, and the third mounting base is disposed on the tractor. The pressing component has a first end and a second end opposite to each other. The first end is detachably connected to the third mounting base, and the second end is provided with a pressing rod and the elastic element. The elastic element applies a vertically downward pressure to the pressing rod, so that the pressing rod can press against the pressure plate.

[0015] In some embodiments, the pressing assembly includes a horizontal connecting rod, one end of which is configured as the first end and the other end as the second end;

[0016] A matching positioning structure and a quick-release structure are provided between the first end and the third mounting base, and the quick-release structure enables the first end and the third mounting base to be detachably connected.

[0017] The second end is provided with an installation cylinder, and the pressure rod is provided through the installation cylinder. The pressure rod is connected to the elastic element. The bottom end of the pressure rod has a spherical pressing surface, and the top end is connected to a handle.

[0018] By adopting the above technical solution, the positioning structure and quick-release structure improve the assembly accuracy, stability and convenience of the pressure-blocking component and the third mounting base, and also ensure the accuracy and stability of the pressure applied to the second end of the pressure-blocking component. Furthermore, the pressure-blocking rod at the second end of the pressure-blocking component can apply pressure to the detection unit without tilting it through its bottom spherical pressing surface, reducing the flatness requirements of the contact surfaces of the pressure rod and the pressure plate, and ensuring the horizontal stability of the detection unit. At the same time, the top handle at the second end of the pressure-blocking component can also facilitate the assembly of the pressure-blocking mechanism and the detection unit. That is, during assembly, the pressure-blocking rod is pulled up, and after the pressure-blocking rod moves into place, it is lowered to achieve pressure, so that the two always exert force only in the vertical direction.

[0019] In some embodiments, the pressure plate is disposed at the end of the detection unit by a triangular bracket, and the circumferential edge of the pressure plate extends upward to form a limiting frame.

[0020] By adopting the above technical solution, the connection strength between the pressure plate and the detection unit is improved by using a triangular bracket, so that the connection between the two is stable and reliable, and at the same time, the pressure applied by the pressure mechanism to the detection unit is stable and reliable.

[0021] In some embodiments, the detection unit includes a detection housing, and a profile detection unit and a corrugation detection unit are disposed inside the detection housing;

[0022] The profile detection unit includes a laser emitter and an industrial camera. The laser emitter is used to scan the profile of the rail, and the industrial camera is used to acquire laser images. The corrugation detection unit is used to acquire corrugation data of the top surface of the rail.

[0023] By adopting the above technical solution, a specific profile detection unit can be used in conjunction with a relatively fast dragging speed to achieve accurate detection at high speeds.

[0024] In some embodiments, the connecting rod has a spring gas spring, and the connecting rod is detachably connected to the detection unit.

[0025] By adopting the above technical solution, the detection units at both ends of the connecting rod are kept on the rail in the curved section of the railway by means of spring gas support, so as to avoid derailment; at the same time, the detachable connection between the connecting rod and the detection unit makes it easier to transport and carry.

[0026] In some embodiments, the detection unit includes two wheel frames, one at the front and one at the back, a wheel assembly is provided below the wheel frames, and a turnout mechanism is provided at the far ends of the two wheel frames. The turnout mechanism includes a turnout guide wheel and a turnout auxiliary wheel.

[0027] The turnout guide wheel is located on the inner side of the wheel frame and is used to assist the detection unit in passing through the switch rail section when passing the turnout in the forward direction; the turnout auxiliary wheel is located on the outer side of the wheel frame and is used to assist the detection unit in passing through the guard rail when passing the turnout in the reverse direction.

[0028] By adopting the above technical solution, the detection device can travel and detect on the turnout through the turnout mechanism, making its application scenarios more extensive and its versatility higher.

[0029] In some embodiments, the turnout auxiliary wheel is flush with the wheel assembly and fits against the outer side of the wheel assembly.

[0030] Other features and corresponding beneficial effects of this application will be described in the latter part of the specification, and it should be understood that at least some of the beneficial effects will become obvious from the description in this application. Attached Figure Description

[0031] Figure 1 This is a schematic diagram illustrating the usage status of this application;

[0032] Figure 2 This is a partial structural diagram of the drag structure of this application;

[0033] Figure 3 This is a schematic diagram of the pressure application mechanism in this application;

[0034] Figure 4 This is a top view of one end of the pressure-applying mechanism in this application;

[0035] Figure 5 This is a partial cross-sectional schematic diagram of the other end of the pressure-applying mechanism in this application;

[0036] Figure 6 This is a partial structural diagram of this application;

[0037] Figure 7 for Figure 6 Enlarged structural diagram of section A.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1. Detection unit; 11. Detection housing; 12. Wheel frame; 121. Wheel assembly; 13. Turnout guide wheel; 14. Turnout auxiliary wheel;

[0040] 2. Connecting rod; 21. Spring gas strut;

[0041] 3. Towing mechanism; 31. First mounting base; 32. Second mounting base; 33. Towing rod; 34. Ball head locking pin;

[0042] 4. Pressure applying mechanism; 41. Pressure plate; 42. Pressing component; 421. Horizontal connecting rod; 422. Quick release structure; 423. Mounting cylinder; 424. Pressing rod; 425. Elastic element; 43. Third mounting base. Detailed Implementation

[0043] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with preferred embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0044] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more. Unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] Please see Figure 1 , Figure 1 This is a schematic diagram illustrating the usage status of this application.

[0047] This application provides a towed rail profile corrugation detection device, including two symmetrically arranged detection units 1 and a connecting rod 2 connecting the two detection units 1. The detection units 1 are used for rail profile corrugation detection. The two detection units 1 and the connecting rod 2 constitute the main body of this detection device.

[0048] The main body of this testing device is connected to a tractor (not fully shown in the figure) via a towing mechanism 3 and a pressure applying mechanism 4, thereby enabling towing testing.

[0049] Furthermore, the towing mechanism 3 is detachably connected to the middle of the tractor and the middle of the link 2. Two pressure applying mechanisms 4 are symmetrically arranged and correspond to the detection unit 1. The pressure applying mechanism 4 is detachably connected to the side of the tractor and the detection unit 1, and the pressure applying mechanism 4 includes an elastic element 425, which applies vertical downward pressure to the detection unit 1.

[0050] That is, the towing mechanism 3, the pressure mechanism 4, the tractor, and the main body of the detection device (i.e., the connecting rod 2 and the detection unit 1) are all detachably connected, so as to facilitate disassembly into individual independent modules, thereby reducing the overall volume and improving the regularity, and facilitating transportation and carrying.

[0051] Furthermore, during towing, the towing mechanism 3 connects the middle of the tractor and the middle of the connecting rod 2, which can initially ensure traction stability. At the same time, the two pressure-applying mechanisms 4, which are symmetrically arranged, apply pressure to the two detection units 1 respectively, ensuring that the vertical distance between the detection unit 1 and the rail is stable, thereby ensuring detection accuracy. Moreover, the two pressure-applying mechanisms 4 are connected to the two sides of the tractor and the two detection units 1 respectively, which can further improve traction stability.

[0052] In addition, the pressure applying mechanism 4 applies pressure to the detection unit 1 through the elastic element 425. It has a simple structure, low cost, and can adaptively apply pressure without manual adjustment, making it easy to operate. The elastic element 425 is preferably a spring.

[0053] Please see Figure 2 and Figure 6 , Figure 2 This is a partial structural diagram of the drag structure of this application; Figure 6 This is a partial structural diagram of this application.

[0054] In one embodiment, the towing mechanism 3 includes a first mounting base 31, a second mounting base 32, and a towing bar 33.

[0055] The first mounting base 31 is located in the middle of the connecting rod 2, and the second mounting base 32 is located in the middle of the rear of the tractor. The two ends of the towing rod 33 are detachably connected to the first mounting base 31 and the second mounting base 32 respectively. That is, towing is achieved by the cooperation of a single towing rod 33 and the first mounting base 31 and the second mounting base 32. The structure is simple, the size is small, and the assembly is convenient, which improves the ease of operation.

[0056] In one embodiment, the end of the tow bar 33 is provided with a connecting ring, and the first mounting base 31 and the second mounting base 32 each have two opening connecting parts arranged opposite to each other. The connecting ring is inserted into the two opening connecting parts and a ball head locking pin 34 is inserted to realize the detachable connection between the tow bar 33 and the first mounting base 31 or the second mounting base 32. That is, the ball head locking pin 34 realizes the detachable connection between the tow bar 33 and the first mounting base 31 and the second mounting base 32, which is convenient to operate and reliable to connect.

[0057] The ball head locking pin 34 can be a product that is already in use, such as MISUMI BLP5-10, BLP5-15, BLP6-10, etc.

[0058] Please see Figure 3-5 , Figure 3 This is a schematic diagram of the pressure application mechanism 4 of this application; Figure 4 This is a top view of one end of the pressure-applying mechanism 4 in this application; Figure 5 This is a partial cross-sectional schematic diagram of the other end of the pressure applying mechanism 4 of this application.

[0059] In one embodiment, the pressure applying mechanism 4 includes a pressure plate 41, a pressing component 42, and a third mounting base 43.

[0060] The pressure plate 41 is disposed on the detection unit 1, the third mounting base 43 is disposed on the tractor, and the pressing component 42 has a first end and a second end opposite to each other. The first end is detachably connected to the third mounting base 43, and the second end is provided with a pressing rod 424 and an elastic element 425. The elastic element 425 applies a vertical downward pressure to the pressing rod 424, so that the pressing rod 424 can press against the pressure plate 41.

[0061] In one specific embodiment, the pressing component 42 includes a horizontal connecting rod 421, one end of which is designated as a first end and the other end as a second end.

[0062] A matching positioning structure and a quick-release structure 422 are provided between the first end and the third mounting base 43. The quick-release structure 422 allows the first end and the third mounting base 43 to be detachably connected. Thus, the positioning structure and quick-release structure 422 improve the assembly accuracy, stability and convenience of the pressing component 42 and the third mounting base 43, and also ensure the stability of the pressing component 42.

[0063] The second end applies pressure with precision and stability.

[0064] Preferably, the positioning structure consists of a matching positioning post and a positioning groove. For example, the first end of the horizontal connecting rod 421 is provided with a protruding positioning post, and the third mounting base 43 is provided with a positioning groove. The positioning of the horizontal connecting rod 421 and the third mounting base 43 is achieved by inserting the positioning post into the positioning groove.

[0065] Preferably, the quick-release structure 422 includes a rotating handle, a U-shaped clamp, and a locking block. The locking block is disposed on the third mounting base 43, and the rotating handle is disposed on the horizontal connecting rod 421. Rotation of the rotating handle can cause the U-shaped clamp to engage and disengage with the locking block, thereby realizing the quick-release assembly and disassembly of the horizontal connecting rod 421 and the third mounting base 43. The quick-release structure 422 may also be selected from other types of structures in the prior art, as long as it can realize the quick-release assembly and disassembly of the horizontal connecting rod 421 and the third mounting base 43.

[0066] In one specific embodiment, a mounting cylinder 423 is provided at the second end, and a pressing rod 424 is provided through the mounting cylinder 423, and the pressing rod 424 is connected to an elastic member 425.

[0067] Preferably, the bottom end of the pressure bar 424 has a spherical downward pressure surface, that is, point pressure is applied instead of surface pressure, so that the detection unit 1 can be pressured without tilting it, reducing the flatness requirements of the contact surfaces of the pressure bar and the pressure plate 41, and ensuring the horizontal stability of the detection unit 1.

[0068] Preferably, the top of the pressure rod 424 is connected to a handle, which facilitates the assembly of the pressure mechanism and the detection unit 1. That is, during assembly, the pressure rod 424 is pulled up, and after the pressure rod 424 is moved into place, it is put down to achieve pressure, so that the two always exert force only in the vertical direction, avoiding the pressure rod 424 from moving on the pressure plate 41 during assembly and causing the pressure plate 41 to tilt.

[0069] Preferably, the top of the mounting cylinder 423 is threaded with an adjusting member, the pressing rod 424 passes through the adjusting member, the elastic member 425 abuts against the adjusting member, and the preload of the elastic member 425 is adjusted by the adjusting member.

[0070] Please see Figure 6-7 , Figure 6 This is a partial structural diagram of this application; Figure 7 for Figure 6 Enlarged structural diagram of section A.

[0071] In one specific embodiment, the pressure plate 41 is set at the end of the detection unit 1 by a triangular bracket, thereby improving the connection strength between the pressure plate 41 and the detection unit 1, making the connection between the two stable and reliable, and at the same time making the pressure applied by the pressure mechanism 4 to the detection unit 1 stable and reliable.

[0072] In one specific embodiment, the circumferential edge of the pressure plate 41 extends upward with a limiting frame to ensure that even if the pressure mechanism 4 slides relative to the pressure plate 41, the two can still maintain a connection, avoid complete separation, and improve dragging safety.

[0073] In one embodiment, the connecting rod 2 has a spring gas spring 21, which ensures that the detection units 1 at both ends of the connecting rod 2 remain on the rail in the curved section of the railway, thus preventing derailment.

[0074] In one embodiment, the connecting rod 2 is detachably connected to the detection unit 1, thereby enabling the disassembly of the detection device body and further facilitating transportation and carrying.

[0075] Preferably, the connecting rod 2 has connectors at both ends, through which the detection unit 1 and the connecting rod 2 can be detachably connected. Furthermore, the connectors are provided with an insulating layer to ensure that the resistance value between the two detection housings 11 meets the insulation standard, thus preventing the triggering of the track circuit alarm.

[0076] Preferably, a spare battery box is provided on the connecting rod 2, which is used to store a spare battery.

[0077] In one embodiment, the detection unit 1 includes a detection housing 11, and the detection housing 11 is provided with a profile detection unit 1 and a corrugation detection unit 1.

[0078] The profile detection unit 1 includes a laser emitter and an industrial camera. The laser emitter is used to scan the profile of the rail, and the industrial camera is used to acquire laser images. The corrugation detection unit 1 is used to acquire corrugation data of the top surface of the rail.

[0079] That is, by using a specific profile detection unit 1, and with a relatively fast dragging speed, accurate detection can be achieved at high speeds.

[0080] Preferably, the testing chassis 11 is also provided with an encoder mechanism and a data processing unit.

[0081] The encoder mechanism is located at the bottom of the right-side detection housing 11 and collects mileage data. The data processing unit includes an industrial computer and a wireless router module. The industrial computer receives and processes profile image data, corrugation data, and mileage data, while the wireless router module sends the processed data to the client terminal.

[0082] Preferably, the connection interfaces of the left and right testing chambers 11 are located at the front of the testing chamber 11, and the two testing chambers 11 communicate with each other through wiring.

[0083] In one embodiment, the detection unit 1 includes two wheel frames 12, one in front and one behind, and a wheel assembly 121 is provided below the wheel frames 12, the length of which conforms to the chord measurement standard.

[0084] Preferably, a display screen is installed in the middle of the wheel frame 12 at the rear of the testing machine housing 11, which is convenient for the operator to view the data processing status in real time and is also aesthetically pleasing.

[0085] Preferably, the power supply port of the detection chassis 11 is located inside the wheel frame 12, and can be powered by a tractor or by a backup battery.

[0086] In one embodiment, a turnout mechanism is also provided at the far ends of the two wheel frames 12, the turnout mechanism including a turnout guide wheel 13 and a turnout auxiliary wheel 14.

[0087] The turnout guide wheel 13 is located inside the wheel frame 12 and is used to assist the detection unit 1 in passing through the switch rail section when passing the turnout in the forward direction; the turnout auxiliary wheel 14 is located outside the wheel frame 12 and is used to assist the detection unit 1 in passing through the guard rail when passing the turnout in the reverse direction.

[0088] This method enables the detection device to travel and perform detection on the turnout by passing through the turnout mechanism, making it more widely applicable and highly versatile.

[0089] The turnout guide wheel 13 can adopt existing technology, such as the guide wheel and guide plow assembly in CN221938215U.

[0090] In one specific embodiment, the turnout auxiliary wheel 14 is flush with the wheel assembly 121 and fits against the outer side of the wheel assembly 121, so that when the detection device passes the turnout track in reverse, the turnout auxiliary wheel 14 can automatically guide the device through the track through the track height difference, ensuring the stability of the detection unit 1 in passing through this section.

[0091] When not in operation, this testing device can be disassembled into the left testing unit 1, the middle connecting rod 2, the right testing unit 1, the towing mechanism 3, and the pressure applying mechanism 4 for storage and transportation.

[0092] When a power-on inspection is required, first mount the two side detection units 1 on the rear rail of the tractor, then connect the connecting rod 2 to the two side detection units 1 and lock them together; then install the towing rod 33 and the pressure assembly 42; finally insert the connection wire and power cord of the detection unit 1, turn on the power, and the rail profile and corrugation data can be collected during the towing process, and the data collection status can be viewed on the display screen.

[0093] When passing through the turnout point rail in the reverse direction, the turnout guide wheel 13 automatically guides the detection device to travel along the switch rail direction, and the turnout auxiliary wheel 14 can automatically guide the device through the point rail through the height difference of the point rail, so no operation is required.

[0094] After the test is completed, first disconnect the power supply cable and the chassis connection cable, remove the spare battery, then remove the towing rod 33 and the pressing component 42, and finally disassemble the test unit 1 and the connecting rod 2, remove them from the rail and store them.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A device for detecting rail profile corrugation by towing, characterized in that, include: Two symmetrically arranged detection units are used for detecting rail profile corrugation. A connecting rod that connects the two detection units; as well as, A towing mechanism and a pressure applying mechanism are used for connection with a tractor. The towing mechanism is detachably connected to the middle of the tractor and the middle of the connecting rod. Two pressure applying mechanisms are symmetrically arranged and correspond to the detection unit. The pressure applying mechanism is detachably connected to the side of the tractor and the detection unit. The pressure applying mechanism includes an elastic element and applies vertical downward pressure to the detection unit through the elastic element.

2. The apparatus of claim 1, wherein, The towing mechanism includes a first mounting base, a second mounting base, and a towing rod. The first mounting base is located in the middle of the connecting rod, and the second mounting base is located in the middle of the rear of the tractor. The two ends of the towing rod are detachably connected to the first mounting base and the second mounting base, respectively.

3. The apparatus of claim 2, wherein, The end of the tow rod is provided with a connecting ring. Both the first mounting base and the second mounting base have two opening connecting parts arranged opposite to each other. The tow rod and the first mounting base or the second mounting base can be detachably connected by inserting the connecting ring into the two opening connecting parts and inserting a ball head locking pin.

4. The apparatus of claim 1, wherein, The pressure-applying mechanism includes a pressure plate, a pressing component, and a third mounting base. The pressure plate is disposed on the detection unit, and the third mounting base is disposed on the tractor. The pressing component has a first end and a second end opposite to each other. The first end is detachably connected to the third mounting base, and the second end is provided with a pressing rod and the elastic element. The elastic element applies a vertically downward pressure to the pressing rod, so that the pressing rod can press against the pressure plate.

5. The apparatus of claim 4, wherein, The pressure-blocking component includes a horizontal connecting rod, one end of which is designated as the first end and the other end as the second end; A matching positioning structure and a quick-release structure are provided between the first end and the third mounting base, and the quick-release structure enables the first end and the third mounting base to be detachably connected. The second end is provided with an installation cylinder, and the pressure rod is provided through the installation cylinder. The pressure rod is connected to the elastic element. The bottom end of the pressure rod has a spherical pressing surface, and the top end is connected to a handle.

6. The apparatus of claim 4, wherein, The pressure plate is mounted on the end of the detection unit via a triangular bracket, and a limiting frame extends upward from the circumferential edge of the pressure plate.

7. The apparatus of claim 1, wherein, The detection unit includes a detection housing, and a profile detection unit and a corrugation detection unit are installed inside the detection housing; The profile detection unit includes a laser emitter and an industrial camera. The laser emitter is used to scan the profile of the rail, and the industrial camera is used to acquire laser images. The corrugation detection unit is used to acquire corrugation data of the top surface of the rail.

8. The apparatus of claim 1, wherein, The connecting rod has a spring gas spring, and the connecting rod is detachably connected to the detection unit.

9. The apparatus of claim 1, wherein, The detection unit includes two wheel frames, one at the front and one at the back. A wheel assembly is provided below the wheel frames. A turnout mechanism is also provided at the far ends of the two wheel frames. The turnout mechanism includes a turnout guide wheel and a turnout auxiliary wheel. The passageway switch auxiliary wheel is arranged in the same level with the row wheel group and is attached to the outer side of the row wheel group.

10. The apparatus of claim 9, wherein, The passageway switch auxiliary wheel is arranged in the same level with the row wheel group and is attached to the outer side of the row wheel group.

Images