Rail unloading operation vehicle and operation method

Abstract

The embodiment of the invention provides a rail unloading operation vehicle. The rail unloading operation vehicle comprises a vehicle frame, a rail shifting device and a rail ascending and descending device. The rail shifting device is arranged on the frame, receives the steel rail conveyed in front, changes the movement track of the steel rail in the transverse direction and shifts the steel rail to the steel rail guide groove; the front end of the up-and-down device is arranged on the frame, and the rear end can vertically swing relative to the frame; when the rear end of the up-down track device swings to make contact with the track, the up-down track device is used for bearing the steel rail of the steel rail guide groove and unloading the steel rail to the preset position of the track. The upper and lower rail device can be automatically folded and unfolded, related walking rails do not need to be arranged, the rail lifting device is matched with the rail shifting device to unload the steel rails to the preset positions of the rails, the structure is simple, and the manufacturing and maintaining cost is low.

Description

Technical Field

[0001] This application relates to the technical field of rail transit maintenance, and particularly to a rail unloading operation vehicle and an operation method. Background Art

[0002] Rail sleeper replacement is one of the main tasks in the mechanized maintenance of railway lines. In China's rail transit system, long rails are gradually replacing short rails for rail replacement.

[0003] There are mainly two existing methods for the unloading and loading of long rails: one is the transverse unloading and loading of rails. The transverse unloading and loading of rails uses a lifting device installed on the rail transport vehicle to synchronously lift the rails from both sides of the train and move the rails horizontally to achieve the unloading and loading of long rails. The other is the longitudinal unloading and loading of rails. The unloading and loading of rails are carried out by the cooperation of an unloading rail trolley and a hoisting device, or an unloading and loading rail device with a robotic arm is installed on the long rail transport vehicle to carry out the unloading and loading of rails.

[0004] However, when using the transverse unloading and loading method for rail unloading and loading operations, it is greatly affected by the construction environment and line conditions, and it cannot well adapt to the narrow space of tunnels and small curve radii. For longitudinal unloading and loading of rails, a hoisting device is required to lift and lower the trolley; if an unloading and loading rail device with a robotic arm is installed on the long rail transport vehicle to carry out the unloading and loading of rails, the unloading and loading rail device needs to move on the long rail transport vehicle; therefore, tracks for the operation of the unloading and loading rail device need to be arranged on the long rail transport vehicle, and a bridging device needs to be arranged between adjacent vehicles. However, the smoothness of the connection between the bridging device and the front and rear vehicles in small curve sections is poor, and there are safety hazards when the unloading and loading rail device operates on the long rail transport vehicle.

[0005] In view of this, this application is specifically proposed. Summary of the Invention

[0006] In order to solve one of the above technical defects, a rail unloading operation vehicle and an operation method are provided in the embodiments of this application.

[0007] According to the first aspect of the embodiments of this application, a rail unloading operation vehicle is provided, including:

[0008] A vehicle frame, provided with a rail guide groove; the rail guide groove extends along the longitudinal direction;

[0009] A rail deflecting device, arranged above the vehicle frame; for receiving the rails conveyed from the front and guiding the rails to the rail guide groove;

[0010] An up-and-down track device, with the front end arranged on the vehicle frame and the rear end capable of swinging vertically relative to the vehicle frame; when the rear end of the up-and-down track device swings to contact the track, it is used to receive the rails in the rail guide groove and unload the rails to a preset position on the track; when the rear end of the up-and-down track device swings to be parallel to the vehicle frame, the up-and-down track device slides forward to a preset position above the vehicle frame.

[0011] According to the second aspect of the embodiments of the present application, a rail unloading operation method is provided, which is characterized in that the above-mentioned rail unloading operation vehicle is adopted, and the method includes the following steps:

[0012] The rail deflecting device receives the rail conveyed from the front and guides the rail into the rail guide groove;

[0013] The rail is conveyed downward along the rail guide groove;

[0014] The up-and-down track device swings to contact the track, receives the rail in the rail guide groove and unloads the rail to the preset position on the track.

[0015] The rail unloading operation vehicle provided by the embodiments of the present application includes a vehicle frame, a rail deflecting device and an up-and-down track device. The rail deflecting device is arranged on the vehicle frame, receives the rail conveyed from the front, changes the movement track of the rail transversely, and guides the rail to the rail guide groove; the front end of the up-and-down track device is arranged on the vehicle frame, and the rear end can swing vertically relative to the vehicle frame; when the rear end of the up-and-down track device swings to contact the track, it is used to receive the rail in the rail guide groove and unload the rail to the preset position on the track; the up-and-down track device can be retracted and extended by itself, and there is no need to arrange relevant running tracks, and it cooperates with the rail deflecting device to unload the rail to the preset position on the track, with simple structure and low manufacturing and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0017] Figure 1 is a side view of the operating state of the rail unloading operation vehicle of the present application;

[0018] Figure 2 is a top view of the operating state of the rail unloading operation vehicle of the present application;

[0019] Figure 3 is a side view of the retracted state of the up-and-down track device of the rail unloading operation vehicle of the present application;

[0020] Figure 4 is a top view of the retracted state of the up-and-down track device of the rail unloading operation vehicle of the present application;

[0021] Figure 5 is a three-dimensional structure diagram of the up-and-down track device of the present application;

[0022] Figure 6 is a top view of the guide beam assembly of the present application;

[0023] Figure 7 is a side view of the guide beam assembly of the present application;

[0024] Figure 8Side view of the rail shifting device of this application;

[0025] Figure 9 Connection diagram of the sliding mechanism and the first-level swing mechanism of the application.

[0026] Among them:

[0027] 1. Frame;

[0028] 101. Rail guide groove; 102. Slideway;

[0029] 2. Up-and-down track device;

[0030] 201. Sliding mechanism; 211. Sliding beam; 212. Horizontal swing assembly; 202. First-level swing mechanism; 221. Bent beam; 222. First-level swing drive assembly; 203. Second-level swing mechanism; 231. Guide beam assembly; 2311. Guide beam main frame; 2312. Swing beam; 2313. Guide plate; 2314. Guide plate return piece; 2315. Swing beam drive part; 2316. Guide channel; 2317. Middle roller; 232. Second-level swing drive assembly; 233. Guide wheel assembly; 204. Chute;

[0031] 3. Rail shifting device;

[0032] 301. Lateral drive device; 311. Screw nut;

[0033] 302. Rail guide frame; 321. Guide frame base; 322. Bottom roller; 323. Side roller; 4. Up-and-down track device drive device. Specific implementation mode

[0034] In order to make the technical solutions and advantages in the embodiments of this application clearer and more understandable, the following further details the exemplary embodiments of this application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0035] Figure 1 Side view of the rail unloading operation vehicle of this application in the operation state; Figure 2 Top view of the rail unloading operation vehicle of this application in the operation state; Figure 3 Side view of the up-and-down track device of the rail unloading operation vehicle of this application in the retracted state; Figure 4 Top view of the up-and-down track device of the rail unloading operation vehicle of this application in the retracted state; Figure 5 Schematic three-dimensional structure diagram of the up-and-down track device of this application; Figure 6 Top view of the guide beam assembly of this application; Figure 7 Side view of the guide beam assembly of this application; Figure 8This is a side view of the rail shifting device of the present application.

[0036] It is set that the direction along the extension of the rail is the longitudinal direction, and the length direction of the vehicle frame is consistent with the extension direction of the rail; the direction perpendicular to the extension of the rail is the transverse direction, and the direction perpendicular to the plane where the transverse and longitudinal directions are located is the vertical direction; the width direction of the vehicle frame is the same as the transverse direction; the direction of the train operation is the front.

[0037] As Figures 1 to 9 shown, as an embodiment of the present application, a rail unloading operation vehicle is provided. It is set that the direction of the train operation is the front, which includes a vehicle frame 1, an on / off track device 2, a rail shifting device 3, and an on / off track device driving device 4.

[0038] Specifically, the vehicle frame 1 is provided with a rail guide groove 101; the rail guide groove 101 extends along the longitudinal direction.

[0039] The rail shifting device 3 is arranged above the vehicle frame 1, and is used for receiving the rail conveyed from the front and guiding the rail to the rail guide groove 101; after receiving the rail, the rail shifting device 3 changes the movement path of the rail so that the rail can smoothly fall into the rail guide groove 101; the front end of the on / off track device 2 is arranged on the vehicle frame 1, and the rear end can swing vertically relative to the vehicle frame 1; when the rear end of the on / off track device 2 swings to contact the track, it is used for receiving the rail in the rail guide groove 101 and unloading the rail to the preset position on the track; when the rear end of the on / off track device 2 swings to be parallel to the vehicle frame 1, the on / off track device 2 slides forward to the preset position above the vehicle frame 1.

[0040] As Figure 2 shown, as an embodiment of the present application, a rail unloading operation vehicle is provided. A plurality of rail guide grooves 101 are arranged on the vehicle frame 1, and the rail guide grooves 101 are arranged at intervals along the transverse direction and symmetrically distributed on both sides of the longitudinal central axis of the vehicle frame 1.

[0041] In specific implementation, the inner rail guide groove 101 guides the rail to the inner side of the track, and the outer rail guide groove guides the rail to the outer side of the track.

[0042] In specific implementation, in the operation state, when the rear end of the on / off track device 2 swings to contact the track, it is used for receiving the rail in the rail guide groove 101 and unloading the rail to the preset position on the track; in the retracted state, when the rear end of the on / off track device 2 swings to be parallel to the vehicle frame 1, the on / off track device 2 slides forward to the preset position above the vehicle frame 1. The on / off track device 2 can be retracted and extended by itself, and there is no need to arrange relevant running tracks, with a simple structure and low manufacturing and maintenance costs.

[0043] As an embodiment of the present application, a rail unloading operation vehicle is further provided with an on / off track device driving device 4;

[0044] The upper and lower track device driving device 4 is arranged on the frame 1, and is used for driving the upper and lower track device 2 to be retracted onto the frame 1 and lowering the upper and lower track device 2 to a preset position on the track.

[0045] In a specific implementation, the upper and lower track device 2 is provided with the power required for lowering and retracting the upper and lower track device 2 through the upper and lower track device driving device 4 .

[0046] It is worth noting that the upper and lower track device driving device 4 can be implemented by mechanisms such as sprocket chains, gear racks, etc., or by mechanisms in the prior art that can drive the upper and lower track devices, so it will not be described in detail.

[0047] like Figures 1 to 7 As shown, as an embodiment of the present application, a rail unloading vehicle is provided, and the upper and lower track device 2 includes a sliding mechanism 201, a primary swing mechanism 202 and a secondary swing mechanism 203;

[0048] The sliding mechanism 201 is arranged parallel to the frame 1 and moves longitudinally relative to the frame 1 to receive the rails and convey the rails longitudinally to a preset position.

[0049] The sliding mechanism 201 includes a sliding beam 211 and a horizontal swing assembly 212; the horizontal swing assembly 212 includes a connecting piece slidably connected to the sliding beam 211, and the sliding beam 211 can move longitudinally relative to the sliding beam 211. The connecting piece is hinged to the primary swing mechanism 202, so that the upper and lower track devices can swing horizontally relative to the frame to adapt to curved working conditions.

[0050] The front end of the primary swing mechanism 202 is connected to the connecting piece, and the primary swing mechanism 202 swings vertically relative to the horizontal plane; the front end of the secondary swing mechanism 203 is connected to the primary swing mechanism 202, and the secondary swing mechanism 203 swings vertically relative to the horizontal plane with the connection with the primary swing mechanism 202 as the rotating axis; when the secondary swing mechanism 203 swings to contact the track, it is used to receive the rail and transfer the rail to the preset position of the track.

[0051] In a specific implementation, the primary swing mechanism 202 and the secondary swing mechanism 203 cooperate to adjust the position of the upper and lower track devices 2 when the upper and lower track devices 2 are retracted or extended.

[0052] As an embodiment of the present application, a rail unloading vehicle is provided, wherein the primary swing mechanism 202 includes a bending beam 221 and a primary swing driving assembly 222 .

[0053] The front end of the bending beam 221 is movably connected to the sliding mechanism 201; the primary swing drive assembly 222 is connected to the sliding mechanism 201 and the bending beam 221, and is used to drive the bending beam 221 to swing vertically relative to the horizontal plane with the connection with the sliding mechanism 201 as the rotation axis.

[0054] In implementation, the first-level swing drive assembly 222 can adopt an oil cylinder. The oil cylinder base is connected to the sliding mechanism 201, and the oil cylinder piston rod is movably connected to the bending beam 221. The first-level swing drive assembly 222 can also adopt other power components with driving functions to adjust the position of the bending beam 221.

[0055] As an embodiment of the present application, a rail unloading operation vehicle is provided. The second-level swing mechanism 203 includes a guide beam assembly 231, a guide beam assembly 23, and a second-level swing drive assembly 232.

[0056] The front end of the guide beam assembly 231 is movably connected to the first-level swing mechanism 202. The second-level swing drive assembly 232 is used to drive the guide beam assembly 231 to swing vertically relative to the horizontal plane with the connection point with the first-level swing mechanism 202 as the rotation axis.

[0057] In specific implementation, the guide beam assembly 231 is used to receive the rail and control the position where the rail is unloaded. The second-level swing drive assembly 232 can adopt an oil cylinder. The oil cylinder base is connected to the first-level swing mechanism 202, and the oil cylinder piston rod is movably connected to the guide beam assembly 231. The second-level swing drive assembly 232 can also adopt other power components with driving functions to adjust the position of the guide beam assembly 231.

[0058] As a specific embodiment, the second-level swing drive assembly 232 adopts an oil cylinder. The oil cylinder base is connected to the bending beam 221 of the first-level swing mechanism 202. The positions of the bending beam 221 and the guide beam assembly 231 are adjusted through the second-level swing drive assembly 232 and the first-level swing drive assembly 222. The guide beam assembly 231 is used to receive the rail, and the rail can be placed at a specified position or received at a suitable position through the second-level swing drive assembly 232 and the first-level swing drive assembly 222.

[0059] As an embodiment of the present application, a rail unloading operation vehicle is provided. The second-level swing mechanism 203 further includes a guide wheel assembly 233. The guide wheel assembly 233 is arranged below the guide beam assembly 231 and is used to slide and travel along the track.

[0060] In specific implementation, the guide wheel assembly 233 includes a plurality of guide wheels. The guide wheels are arranged below the guide beam assembly 231. In the working state, the sliding mechanism 201 of the up-and-down track device 2 is located on the vehicle frame 1. The sliding mechanism 201 runs with the whole vehicle, and the guide beam assembly 231 can run on the track with the whole vehicle.

[0061] As an embodiment of the present application, a rail unloading operation vehicle is provided. The guide beam assembly 231 includes a guide beam main frame 2311, a swing beam 2312, and a rail guiding structure.

[0062] The main frame 2311 of the guiding beam is arranged at the rear end of the first-level swing mechanism 202; the swing beam 2312 is movably connected to the main frame 2311 of the guiding beam, and takes the connection with the main frame 2311 of the guiding beam as the rotation axis, and swings left and right relative to the horizontal plane; the rail guiding structure is movably connected to the end of the swing beam 2312; and takes the connection with the swing beam 2312 as the rotation axis, and swings left and right relative to the horizontal plane.

[0063] As Figures 5 to 7 shown, as an embodiment of the present application, a rail unloading operation vehicle is provided. The rail guiding structure includes a guiding plate 2313 and a guiding plate returning member 2314. The guiding plate 2313 is movably connected to the swing beam 2312, and guiding wheels are arranged above the guiding plate 2313; the guiding wheels are arranged at intervals in the transverse direction to form a guiding channel 2316 for the rail to pass through longitudinally; the guiding plate returning member 2314 is connected to the swing beam 2312 and the guiding plate 2313, and is used to drive the guiding plate 2313 to swing left and right relative to the horizontal plane with the connection with the swing beam 2312 as the rotation axis.

[0064] As a specific embodiment, the guiding wheel assembly 233 is installed below the main frame 2311 of the guiding beam and travels along the track. A swing beam driving member 2315 is arranged between the swing beam 2312 and the main frame 2311 of the guiding beam. The swing beam driving member 2315 is used to provide the driving force for the swing beam 2312 to swing left and right relative to the horizontal plane with the connection with the main frame 2311 of the guiding beam as the rotation axis; the guiding plate returning member 2314 is used to provide the driving force for the guiding plate 2313 to swing left and right relative to the horizontal plane with the connection with the swing beam 2312 as the rotation axis. In a specific implementation, both the guiding plate returning member 2314 and the swing beam driving member 2315 can adopt oil cylinders, or other driving members or power structures capable of providing power. The guiding plate returning member 2314 and the swing beam driving member 2315 adjust the positions of the swing beam 2312 and the guiding plate 2313 so that the center line of the guiding channel 2316 located on the guiding plate 2313 is parallel to the track, so as to receive the rail and enable the rail to be placed at a specified position or to receive the rail at a suitable position.

[0065] As a specific embodiment, middle rollers 2317 are further arranged above the main frame 2311 of the guiding beam, and guide grooves for the rail to pass through are arranged on both lateral sides of the middle rollers. The middle rollers 2317 can limit the rail passing through both sides of the middle rollers 2317.

[0066] As an embodiment of the present application, a rail unloading operation vehicle is provided. A slideway 102 for the up-and-down track device 2 to slide longitudinally is further arranged on the vehicle frame 1; the up-and-down track device 2 is provided with a sliding groove 204, and the sliding groove 204 is slidably arranged on the slideway 102.

[0067] In specific implementation, chutes 204 are correspondingly arranged below the sliding mechanism 201, below the bending beam 221, and below the main frame 2311 of the guiding beam of the upper and lower track device 2; alternatively, a groove structure is arranged below the sliding mechanism 201, the bending beam 221, and the main frame 2311 of the guiding beam to cooperate with the slideway 102; the upper and lower track device 2 slides along the slideway 102 through the chutes 204 to realize the retraction and lowering of the upper and lower track device 2. The slideway 102 is fixed in the middle of the vehicle frame 1 to guide the upper and lower track device 2 to retract to the vehicle frame or lower to the track.

[0068] In specific implementation, a driving device for the longitudinal movement of the upper and lower track device 2 is arranged on the vehicle frame 1 to provide driving force for the retraction and extension of the upper and lower track device 2.

[0069] As Figure 8 shown, the rail guiding device includes a rail guiding frame 302 and a lateral movement device.

[0070] The rail guiding frame 302 can move laterally relative to the vehicle frame 1; it is used to receive the rails conveyed in front and guide the rails to the rail chute 101; the lateral movement device is used to drive the rail guiding frame to move laterally.

[0071] The rail guiding frame 302 includes a guiding frame framework, bottom rollers 322, and side rollers 323.

[0072] The guiding frame framework is open upward to form a space for accommodating the rails; the guiding frame framework includes a guiding frame base 321.

[0073] The bottom rollers 322 are arranged at the bottom of the guiding frame framework, specifically on the guiding frame base 321. The side rollers 323 are symmetrically arranged inside the guiding frame framework, and the bottom rollers 322 and the side rollers 323 form a space for the rails to pass through.

[0074] The lateral movement device includes a lateral frame and a lateral driving device 301.

[0075] The lateral frame extends laterally, and the rail guiding frame 302 is arranged on the lateral frame; the lateral driving device 301 is connected to the rail guiding frame and is used to drive the rail guiding frame 302 to move along the lateral frame.

[0076] Specifically, the lateral movement device is used to change the lateral position of the rail guiding frame 302 and change the lateral movement trajectory of the rails.

[0077] As an embodiment of the present application, the transmission form of the lateral driving device 301 is realized through a screw nut 311. The guiding frame base 321 is linked with the nut assembly, and lateral movement is performed through the movement of the nut assembly. The rail guiding frame is provided with bottom rollers 322 and side rollers 323 to form a space for the rails to pass through and reduce the friction during rail conveyance.

[0078] As an embodiment of the present application, a rail unloading operation method is provided. Using the above-mentioned rail unloading operation vehicle, the method includes the following steps:

[0079] (1) The rail shifting device receives the rails conveyed from the front, and enables the rails to smoothly fall into the rail guide groove;

[0080] (2) The rails are conveyed downward along the rail guide groove;

[0081] (3) The upper and lower track device swings to contact the track, receives the rails in the rail guide groove, and unloads the rails to the preset position on the track.

[0082] As an embodiment of the present application, a rail unloading operation method is provided. Using the above-mentioned rail unloading operation vehicle, the method includes the following steps:

[0083] After unloading the rails to the preset position on the track, it further includes that the upper and lower track device 2 retracts onto the vehicle frame 1 and travels with the whole vehicle.

[0084] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0085] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0086] In the present application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0087] Although the preferred embodiments of the present application have been described, additional changes and modifications can be made to these embodiments by those skilled in the art once they learn of the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present application.

[0088] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A rail unloading vehicle, wherein the train operation direction is set to be forward, characterized in that: include: The frame is provided with a rail guide groove; the rail guide groove extends in the longitudinal direction; The rail-pulling device is arranged above the frame; it is used to receive the steel rails transported from the front and guide the steel rails to the rail guide grooves; The upper and lower track device has a front end arranged on the frame and a rear end capable of swinging vertically relative to the frame; when the rear end of the upper and lower track device swings to contact the track, it is used to receive the rails in the rail guide groove and unload the rails to a preset position on the track; when the rear end of the upper and lower track device swings to be parallel to the frame, the upper and lower track device slides forward to a preset position above the frame.

2. The rail unloading vehicle according to claim 1, characterized in that: The track derailing device comprises: The rail guide frame can move laterally relative to the vehicle frame; it is used to receive the rails transported in front and guide the rails to the rail guide grooves; The lateral moving device is used to drive the rail guide frame to move laterally.

3. The rail unloading vehicle according to claim 2, characterized in that: The rail guide frame comprises: A guide frame, the guide frame is open upward to form a space for accommodating the rails; A bottom roller is provided to set the bottom of the guide frame; The side rollers are symmetrically arranged on the inner side of the guide frame, and the bottom rollers and the side rollers form a space for the rails to pass through.

4. The rail unloading vehicle according to claim 2, characterized in that: The lateral movement device comprises: A transverse frame extending in the transverse direction, and a rail guide frame is arranged on the transverse frame; The transverse driving device is connected to the rail guide frame and is used to drive the rail guide frame to move along the transverse frame.

5. The rail unloading vehicle according to claim 1, characterized in that: Also includes: The upper and lower track device driving device is arranged on the vehicle frame and is used for driving the upper and lower track device to be retracted to the vehicle frame and lowering the upper and lower track device to a preset position on the track.

6. The rail unloading vehicle according to claim 1, characterized in that: The upper and lower track devices include: The sliding mechanism is arranged parallel to the frame; the sliding mechanism includes a sliding beam and a horizontal swing assembly; the horizontal swing assembly includes a connecting piece slidably connected to the sliding beam, and the sliding beam can move longitudinally relative to the sliding beam; the primary swing mechanism has a front end connected to the connecting piece; the primary swing mechanism swings vertically relative to the horizontal plane; The secondary swing mechanism has a front end connected to the primary swing mechanism, and the secondary swing mechanism swings vertically relative to the horizontal plane with the connection with the primary swing mechanism as the rotation axis; when the secondary swing mechanism swings to contact the track, it is used to receive the rail and transfer the rail to a preset position on the track.

7. The rail unloading vehicle according to claim 6, characterized in that: The primary swing mechanism comprises: A bending beam, the front end of which is movably connected to the sliding mechanism; The primary swing driving assembly is connected to the sliding mechanism and the bending beam, and is used to drive the bending beam to swing vertically relative to the horizontal plane with the connection with the sliding mechanism as the rotation axis.

8. The rail unloading vehicle according to claim 6, characterized in that: The secondary swing mechanism comprises: A guide beam assembly, the front end of which is movably connected to the primary swing mechanism; The secondary swing driving assembly is used to drive the guide beam assembly to swing vertically relative to the horizontal plane with the connection with the primary swing mechanism as the rotation axis.

9. The rail unloading vehicle according to claim 8, characterized in that: The secondary swing mechanism also includes: The guide wheel assembly is arranged below the guide beam assembly and is used for sliding along the track.

10. The rail unloading vehicle according to claim 8, characterized in that: The guide beam assembly comprises: The guide beam main frame is arranged at the rear end of the primary swing mechanism; A swing beam is movably connected to the guide beam main frame, and swings left and right relative to a horizontal plane with the connection with the guide beam main frame as a rotation axis; The rail guide structure is movably connected to the end of the swing beam; it swings left and right relative to the horizontal plane with the connection with the swing beam as the rotation axis.

11. The rail unloading vehicle according to claim 10, characterized in that: The rail guide structure comprises: A guide plate is movably connected to the swing beam, and guide wheels are arranged above the guide plate; the guide wheels are arranged at intervals in the transverse direction to form a guide channel for the rail to pass through in the longitudinal direction; The guide plate return member is connected to the swing beam and the guide plate, and is used to drive the guide plate to swing left and right relative to the horizontal plane with the connection with the swing beam as the rotation axis.

12. The rail unloading vehicle according to claim 1, characterized in that: The frame is provided with a plurality of rail guide grooves, which are arranged at intervals in the transverse direction and symmetrically distributed on both sides of the longitudinal center axis of the frame.

13. The rail unloading vehicle according to claim 6, characterized in that: The frame is also provided with a slideway for the upper and lower track devices to slide longitudinally; the upper and lower track devices are provided with a slide groove, and the slide groove is slidably arranged with the slideway.

14. A rail unloading method, characterized in that: The rail unloading vehicle according to any one of claims 1 to 13 is used, comprising the following steps: The rail-pulling device receives the steel rails transported from the front and guides the steel rails into the rail guide grooves; The rails are transported downward along the rail guide grooves; The upper and lower track devices swing to contact the track, receive the rails from the rail guide grooves and unload the rails to the preset positions on the track.

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