A rail unloading device

Abstract

The application discloses a rail unloading device, which solves the technical problem of low unloading efficiency of the existing rail unloading device using a crane to unload rails, and comprises a plurality of unloading units arranged at intervals along the running direction of a transfer trolley and a plurality of turnover driving units, two outermost unloading units each being provided with a turnover driving unit correspondingly, the unloading unit comprising a support table for supporting a rail, a rail pushing assembly for pushing the rail to move along the width direction of the transfer trolley, the rail pushing assembly being provided with a pushing rod with a top end extending out of the support surface of the support table; under the pushing action of the pushing rod, the rail moves from the transportation position of the support table to the turnover position, and under the action of the turnover driving unit, the support table turns over, so that the rail at the turnover position turns over and falls to a target position. The rail unloading device provided by the application realizes the unloading of the rail from the transfer trolley to the target position, thereby improving the rail unloading efficiency.

Description

Technical Field

[0001] This application belongs to the field of railway line maintenance technology, specifically relating to a rail unloading device. Background Technology

[0002] Steel rails are the main component of railway tracks. Their function is to guide the wheels of locomotives and rolling stock, bear the enormous pressure from the wheels, and transmit this pressure to the sleepers. Steel rails must provide the wheels with a continuous, smooth, and least resistance-prone rolling surface. In electrified railways or automatic block signaling sections, steel rails can also serve as track circuits. Long-term train operation often leads to problems such as rail wear, cracks, abrasions, and spalling, requiring replacement once the rails reach their wear limit.

[0003] In the past, rail replacement was always done by crane lifting and unloading. Since there is an electric grid above the railway, the grid needs to be shut down before lifting to avoid electric shock. During the rail unloading process, multiple trades such as transfer car operators, shunting operators, overhead contact line workers, crane drivers and track maintenance personnel need to work together to lift and unload the rails. The whole process is complicated and cumbersome, and the unloading time is long, resulting in low track maintenance efficiency. Summary of the Invention

[0004] To address the technical problems of complex and time-consuming unloading processes in traditional rail unloading methods, this application provides a rail unloading device.

[0005] In a first aspect of this application, a rail unloading device is provided. The rail unloading device includes a tilting drive unit and a plurality of unloading units spaced apart along the running direction of the transfer vehicle. The two outermost unloading units are each corresponding to the tilting drive unit. Each unloading unit includes a support platform and a rail pushing assembly. The support platform has a support surface for supporting the rails. The rail pushing assembly includes a push rod and a drive member for driving the push rod to move along the width direction of the transfer vehicle. The top end of the push rod extends out of the support surface.

[0006] The flipping drive unit is used to drive the corresponding support platform and the push rail assembly to flip around the flipping axis. The push rod moves along the width direction of the transfer vehicle under the drive of the drive member, so that the rail moves from the transport position of the support platform to the flipping position. The support platform flips under the action of the flipping drive unit, so that the rail located at the flipping position flips and falls to the target position.

[0007] In an optional embodiment of this application, the rail unloading device includes a guide arm movably connected to the flipping shaft. During the rail flipping process, the guide arm is set at an angle to the ground so that the rail falls along the guide arm.

[0008] In an optional embodiment of this application, during the rail flipping process, the guide arm is set at an angle of 55° to 65° with the ground; the end of the guide arm away from the flipping axis is provided with a support surface for contacting the ground;

[0009] In an optional embodiment of this application, the support platform is provided with a receiving cavity for the pusher assembly to move from the transport position to the flipping position, the top end of the push rod extends out of the receiving cavity, and the guide arm is located outside the support platform;

[0010] In an optional embodiment of this application, the driving component is a first telescopic cylinder located in the receiving cavity. The first telescopic cylinder reciprocates along the direction from the transport position to the flip position. The telescopic end of the first telescopic cylinder is connected to the push rod, and the first telescopic cylinder is close to the flip position.

[0011] In an optional embodiment of this application, the tilting drive unit includes a second telescopic cylinder and a rotating arm hinged to the telescopic end of the second telescopic cylinder, the rotating arm being connected to the tilting shaft;

[0012] In an optional embodiment of this application, the rail unloading device further includes a limiting member detachably connected to the rotating arm, the limiting member being located at the front end of the guide arm in the flipping direction to limit the guide arm;

[0013] In an optional embodiment of this application, the first telescopic cylinder and the second telescopic cylinder are respectively connected to the power source through an on / off valve, and the on / off valve is located on the side of the support platform away from the flip position;

[0014] In an optional embodiment of this application, a controller is also included, wherein the opening and closing valve is an electrically controlled valve and the electrically controlled valve is electrically connected to the controller;

[0015] In a second aspect of this application, a transfer vehicle is provided, including the aforementioned rail unloading device and a vehicle body. The rail unloading device is connected to at least one side of the vehicle body perpendicular to the direction of travel. Compared to the transport position, the flipping position of the support platform is close to the side of the vehicle body. The flipping drive unit and the drive component are connected to the vehicle body.

[0016] According to the rail unloading device provided in the embodiments of this application, the whole includes multiple unloading units and a tilting drive unit arranged at intervals along the running direction of the transfer vehicle. The unloading unit includes a support platform for supporting the rail and a rail pusher assembly for pushing the rail to move along the width direction of the transfer vehicle. The tilting drive unit includes a tilting shaft. The tilting drive unit drives the support platform and the rail pusher assembly to tilt around the tilting shaft. The rail is located between the push rod of the rail pusher assembly and the tilting shaft. The push rod moves the rail from the transport position of the support platform to the tilting position. Then, the tilting drive unit drives the corresponding support platform and the rail pusher assembly to tilt around the tilting shaft. The rail located at the tilting position tilts and falls to the target position, which improves the ease of rail unloading.

[0017] Compared with existing technologies, this method eliminates the need for cranes to lift rails, and the rails do not come into contact with the overhead power grid, thus allowing rail unloading without power outages to the overhead contact system. This application employs a push assembly and a tilting drive unit to collaboratively move and tilt the rails along the width of the transfer vehicle. Under the action of the push rod, the rails move from the transport position on the support platform to the tilting position. Under the action of the tilting drive unit, the support platform and push assembly tilt around the tilting axis, causing the rails at the tilting position to tilt and fall to the target location. This allows the rails to be unloaded directly from both sides of the transfer vehicle, eliminating the need for cranes, overhead contact system workers, and crane operators. This improves transport capacity within the section, significantly increases efficiency, reduces labor costs and safety risks for enterprises, and effectively enhances rail unloading efficiency. Attached Figure Description

[0018] Figure 1 A schematic diagram of the assembly structure of the unloading unit, the tilting drive unit, the opening and closing valve and the power source in an embodiment of this application is shown.

[0019] Figure 2 A cross-sectional view of the rail-pushing assembly and support platform of the rail-unloading device along the width direction of the transfer vehicle is shown in another embodiment of this application.

[0020] Figure 3 It shows Figure 2 AA cross-sectional view of the pusher rail assembly and support platform.

[0021] Figure 4 A front view of the tilting drive unit of the rail unloading device in another embodiment of this application is shown.

[0022] Figure 5 It shows Figure 4 Top view of the flip drive unit.

[0023] Explanation of reference numerals in the attached drawings: 1. Support platform; 2. First telescopic cylinder; 3. First connecting rod; 4. Push rod; 5. Spring; 6. Pulley; 7. First push shaft; 8. Second push shaft; 9. Second telescopic cylinder; 10. Rotary arm; 11. Guide arm; 12. Tilting shaft; 13. Fixing pin; 14. Lifting lug; 15. Nut; 16. Y-joint; 17. Air compressor; 18. First control valve; 19. Second control valve; 20. Cover plate; 21. Vehicle end frame; 22. Fixing plate. Detailed Implementation

[0024] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] According to a first aspect of this application, a rail unloading device is provided to improve the efficiency of rail unloading.

[0026] Please see Figure 1 The rail unloading device provided in this application includes a tilting drive unit and multiple unloading units spaced apart along the running direction of the transfer vehicle. The two outermost unloading units are each equipped with a tilting drive unit. Each unloading unit includes a support platform 1 and a rail pushing assembly. The support platform 1 has a support surface for supporting the rail. The rail pushing assembly includes a push rod 4 and a driving member for driving the push rod 4 to move along the width direction of the transfer vehicle. The top end of the push rod 4 extends out of the support surface. The tilting drive unit is used to drive the corresponding support platform 1 and the rail pushing assembly to tilt around the tilting axis 12. The push rod 4 moves along the width direction of the transfer vehicle under the drive of the driving member, so that the rail moves from the transport position of the support platform 1 to the tilting position. The support platform 1 is tilted under the action of the tilting drive unit, so that the rail located at the tilting position tilts and falls to the target position.

[0027] Support platform 1 is used to support the rails and accommodate the rail pusher assembly.

[0028] The rail pusher assembly is used to drive the rail. The rail is pushed by the push rod 4 between the push rod 4 and the tilting shaft 12 to the side closer to the tilting shaft 12. The rail pusher assembly includes a drive element that provides the push rod 4 with a driving force in the rail unloading direction so as to move the rail.

[0029] The flipping component in the flipping drive unit drives the connected support platform 1 and the push rail assembly connected to the support platform 1 to flip around the flipping shaft 12, so that the rail above the support platform 1 flips and falls to the target position.

[0030] The rail-pushing assembly includes a push rod 4 that reciprocates along the width of the transfer vehicle and a drive unit that drives the push rod 4. The rail is placed on the support platform 1, between the push rod 4 and the flipping shaft 12. The drive unit drives the push rod 4 to push the rail above the support platform 1 in the width direction until the rail moves to the flipping position. The flipping drive unit drives the support platform 1 and the rail-pushing assembly to flip around the flipping shaft 12. The rail above the support platform 1 flips along with the flipping of the support platform 1 and falls to the target position, realizing the direct unloading of the rail from the transfer vehicle, improving the efficiency and ease of rail unloading.

[0031] In some embodiments, please refer to Figure 1 as well as Figure 4 The rail unloading device includes a guide arm 11 movably connected to the flipping shaft 12. During the rail flipping process, the guide arm 11 is set at an angle to the ground so that the rail falls along the guide arm 11. The guide arm 11 guides the rail to the unloading target position to improve the guiding performance of the rail unloading device, so that the rail slides down to the target position with the guide arm 11. In some embodiments, the cross section of the guide arm 11 parallel to the rail movement direction gradually decreases from the end near the flipping shaft 12 to the end away from the flipping shaft 12.

[0032] In some embodiments, during the rail flipping process, the guide arm 11 can be set at an angle of 55° to 65° with the ground. If the angle is too large, it may not play a guiding role; if the angle is too small, it will occupy more space and the rail will slide down the guide arm more slowly, resulting in low efficiency. The end of the guide arm 11 away from the flipping shaft 12 is provided with a support surface for contacting the ground, so that the guide arm can be stably maintained at the above-mentioned angle, further improving the stability and accuracy of the rail unloading process. In some embodiments, the guide arm 11 includes an abutting end that contacts the ground. In some embodiments, the guide arm 11 is at an angle of 57°, 60° or 63° with the ground. In some embodiments, the guide arm 11 is 1 meter long and the flipping shaft 12 is 0.87 meters above the ground.

[0033] In some embodiments, please refer to Figure 2The support platform 1 is provided with a receiving cavity for the pusher assembly to move from the transport position to the flipping position. The top end of the push rod 4 extends out of the receiving cavity, and the guide arm 11 is located outside the support platform 1 to ensure space utilization. In some embodiments, the pusher assembly is located inside the receiving cavity of the support platform 1, and the push rod 4 is partially located inside the receiving cavity and partially extends out of the receiving cavity, located at the top of the receiving cavity and outside the receiving cavity. In some embodiments, one end of the guide arm 11 includes a through hole, is fitted onto the flipping shaft 12, and is movably connected to the flipping shaft 12. In some embodiments, one end of the guide arm 11 includes a through hole, is fitted onto the flipping shaft 12, and has a certain gap with the flipping shaft 12 so that the guide arm does not rotate with the flipping shaft. In some embodiments, the support platform 1 is provided with a lifting lug 14 connected to the flipping shaft 12 on the side near the flipping shaft 12, and the through hole on it is used for the flipping shaft 12 to pass through.

[0034] In some embodiments, please refer to Figure 2 as well as Figure 3 The driving component is a first telescopic cylinder 2 located within the receiving cavity. The first telescopic cylinder 2 reciprocates from the transport position to the flipping position. The telescopic end of the first telescopic cylinder 2 is connected to the push rod 4. The first telescopic cylinder 2 is close to the flipping position to make reasonable use of the space occupied by the telescopic cylinder and ensure space saving. In some embodiments, the driving component is a first pneumatic cylinder. In some embodiments, the first telescopic cylinder 2 is connected to two opposing first connecting rods 3 through a first push shaft 7. One end of the two first connecting rods 3 is connected to each other through the first push shaft 7, and the other end is connected to each other through a second push shaft 8. The top includes a cover plate 20, which abuts against the push rod. 4. A spring 5 is included between the push rod 4 and the two first connecting rods 3. The cover plate 20 is used to limit the rotation of the push rod near the telescopic end of the first telescopic cylinder 2. The spring 5 is a tension spring, which is used to limit the rotation of the push rod away from the telescopic end of the first telescopic cylinder 2. The push rod 4 is located between the two first connecting rods 3 and is connected to the second push shaft 8. The two first connecting rods 3 include a bearing pulley 6 on the side away from the push rod 4 so that the push rod 4 can move back and forth in the width direction of the transfer vehicle within the receiving cavity. In some embodiments, the side of the first telescopic cylinder 2 near the push rod 4 includes a fixing plate 22 to control the relative position of the fixed end of the first telescopic cylinder 2.

[0035] In some embodiments, the flipping drive unit includes a second telescopic cylinder 9 and a rotating arm 10 hinged to the telescopic end of the second telescopic cylinder 9. The rotating arm 10 is connected to the flipping shaft 12 and is used to flip the support platform 1 along the flipping shaft 12. In some embodiments, the second telescopic cylinder 9 is a second pneumatic cylinder. In some embodiments, the second telescopic cylinder 9 and the rotating arm 10 are connected by a Y-shaped joint 16. In some embodiments, the flipping shaft 12 and the rotating arm 10 are locked by a nut 15 so that the flipping shaft 12 and the rotating arm 10 rotate synchronously.

[0036] In some embodiments, please refer to Figure 4 as well as Figure 5 The rail unloading device also includes a limiting member detachably connected to the rotating arm 10. The limiting member is located at the front end of the guide arm 11 in the flipping direction to limit the guide arm 11 so that the angle between the guide arm 11 and the support platform 1 is constant. In some embodiments, the limiting member is a fixing pin 13. In some embodiments, the top of the rotating arm 10 includes two oppositely arranged sub-rotating arm plates and is connected to the flipping shaft 12. The guide arm 11 is located between the two sub-rotating arm plates, and the front end of the guide arm 11 in the flipping direction includes a fixing pin 13 connecting the two sub-rotating arm plates. The two sub-rotating arm plates have multiple sets of symmetrically arranged fixing pin holes, and the fixing pin 13 is placed in the fixing pin holes to limit the guide arm 11.

[0037] In some embodiments, please refer to Figure 1 The first telescopic cylinder 2 and the second telescopic cylinder 9 are respectively connected to the power source through on-off valves. The on-off valves are located on the side of the support platform 1 away from the tilting position so that the operator can operate in the reverse direction of the rail unloading position and ensure the safety of the operator. In some embodiments, the on-off valves are manual control valves. In some embodiments, the power source is an air compressor 17. In some embodiments, the first telescopic cylinder 2 is controlled by the first control valve 18 and the second telescopic cylinder 9 is controlled by the second control valve 19.

[0038] In some embodiments, the system further includes a controller, wherein the opening and closing valve is an electrically controlled valve and is electrically connected to the controller.

[0039] The second aspect of this application provides a transfer vehicle that serves both as a rail transfer vehicle and a rail unloading vehicle, offering a wide range of functions.

[0040] The transfer vehicle provided in this application embodiment includes a first aspect of a rail unloading device and a vehicle body. The rail unloading device is connected to at least one side of the vehicle body along at least one side perpendicular to the running direction, i.e., at least one side of the vehicle body width direction. Compared to the transport position, the flip position of the support platform 1 is close to the side of the vehicle body. The flip driving unit and the driving component are connected to the vehicle body.

[0041] The two outermost tilting drive units are connected to the two ends of the vehicle body along its length, and the second telescopic cylinder is located on the outer side of the vehicle body along its length, so it will not interfere with the falling rails, thus enabling the rail unloading to be completed smoothly.

[0042] In some embodiments, a rail unloading device is provided on one side of the vehicle body along its width direction. In other embodiments, rail unloading devices are provided on both sides of the vehicle body along its width direction, allowing for rail unloading from both sides for higher efficiency. When rail unloading devices are provided on both sides of the vehicle body in the opposite direction of its width, the second telescopic cylinder and the opening and closing valve controlling the corresponding second telescopic light are located on both sides of the vehicle body width direction to improve the safety of operators.

[0043] The unloading unit of the rail unloading device can be two, three or four, etc. When the rail unloading device is provided on both sides of the car body in the opposite direction of the width, the unloading units in the width direction of the car body can be positioned correspondingly or staggered. This application does not impose any restrictions.

[0044] The transfer vehicle also includes multiple support beams connected to the vehicle body. These support beams are spaced apart along the length of the vehicle body and located between the two outermost support platforms. The top surfaces of the support beams and the support platforms are coplanar, and the support beams and support platforms together support the rails. The arrangement of the support beams improves the stability of the rails during transportation.

[0045] The following is a detailed description of the rail unloading process of the rail unloading device in this application:

[0046] When the rail unloading device provided in this application embodiment is used, it is equipped with a tilting drive unit located on both sides of the transfer car, that is, on the end frames on both sides of the vehicle, and multiple unloading units spaced apart along the running direction of the transfer car. When the vehicle stops near the rail unloading target position, the fixed pin 13 is pulled out, the guide arm 11 rotates, the top of the guide arm 11 abuts against the ground, and guides the rail to the target position for unloading. The guide arm 11 is set at an angle. The first control valve 18 controls the operation of the first telescopic cylinder 2. The push rod 4 moves along the width direction of the transfer car under the drive of the first telescopic cylinder 2, so that the rail moves from the transport position of the support platform 1 to the tilting position. The second control valve 19 controls the operation of the second telescopic cylinder 9. The tilting drive unit drives the corresponding support platform 1 and the rail pusher assembly to tilt around the tilting axis 12. The support platform 1 tilts under the action of the tilting drive unit, so that the rail located at the tilting position tilts and falls along the guide arm 11 to the target position.

[0047] The rail unloading device of this application has at least the following advantages:

[0048] (1) Multiple unloading units and tilting drive units are set up at intervals along the running direction of the transfer vehicle. The unloading unit includes a support platform for supporting the rail and a rail pusher assembly for pushing the rail to move along the width direction of the transfer vehicle. The tilting drive unit includes a tilting shaft. The tilting drive unit drives the support platform and the rail pusher assembly to tilt around the tilting shaft. The rail is located between the pusher rod of the rail pusher assembly and the tilting shaft. The pusher rod moves the rail from the transport position of the support platform to the tilting position. Then the tilting drive unit drives the corresponding support platform and the rail pusher assembly to tilt around the tilting shaft. The rail located at the tilting position tilts and falls to the target position. No crane is needed for transportation, which improves the ease of unloading the rail.

[0049] (2) The control valve is installed in the opposite direction to the unloading direction to prevent accidents and increase equipment safety.

[0050] (3) The air pipe is connected to the vehicle’s own air compressor to supply energy to the telescopic cylinder. No additional power supply equipment is needed, which reduces costs and increases practicality.

[0051] (4) Under the action of the push rod, the rail moves from the transport position of the support platform to the flipping position; under the action of the flipping drive unit, the support platform and the push component flip around the flipping axis, so that the rail located in the flipping position flips and falls to the target position, realizing the rail is unloaded directly from both sides of the transfer car without the need to shut down the contact network, increasing the transport capacity of the section, achieving a significant improvement in efficiency, reducing the company's labor costs and safety risks, and effectively improving the rail unloading efficiency.

[0052] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, 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.

[0054] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A rail unloading device for unloading rails from a transfer vehicle, characterized in that, The unloading device includes a tilting drive unit and multiple unloading units spaced apart along the running direction of the transfer vehicle. The two outermost unloading units are each equipped with a tilting drive unit. Each unloading unit includes: The support platform is equipped with a support surface for supporting the steel rails; The pusher assembly includes a push rod and a drive member for moving the push rod along the width direction of the transfer vehicle, wherein the top end of the push rod extends out of the support surface; The flipping drive unit is used to drive the corresponding support platform and the push rail assembly to flip around the flipping axis. The push rod moves along the width direction of the transfer vehicle under the drive of the drive member, so that the rail moves from the transport position of the support platform to the flipping position. The support platform flips under the action of the flipping drive unit, so that the rail located at the flipping position flips and falls to the target position.

2. The rail unloading device according to claim 1, characterized in that, The rail unloading device includes a guide arm movably connected to the flipping shaft. During the rail flipping process, the guide arm is set at an angle to the ground so that the rail falls along the guide arm.

3. The rail unloading device according to claim 2, characterized in that, During the rail flipping process, the guide arm is set at an angle of 55° to 65° with the ground; the end of the guide arm away from the flipping axis is provided with a support surface for contacting the ground.

4. The rail unloading device according to any one of claims 2-3, characterized in that, The support platform is provided with a receiving cavity for the pusher assembly to move from the transport position to the flipping position, the top end of the push rod extends out of the receiving cavity, and the guide arm is located outside the support platform.

5. The rail unloading device according to claim 4, characterized in that, The driving component is a first telescopic cylinder located within the receiving cavity. The first telescopic cylinder reciprocates along the direction from the transport position to the flipping position. The telescopic end of the first telescopic cylinder is connected to the push rod, and the first telescopic cylinder is close to the flipping position.

6. The rail unloading device according to claim 5, characterized in that, The tilting drive unit includes a second telescopic cylinder and a rotating arm hinged to the telescopic end of the second telescopic cylinder, the rotating arm being connected to the tilting shaft.

7. The rail unloading device according to claim 6, characterized in that, The rail unloading device also includes a limiting member detachably connected to the rotating arm. The limiting member is located at the front end of the guide arm in the flipping direction to limit the guide arm.

8. The rail unloading device according to claim 6, characterized in that, The first telescopic cylinder and the second telescopic cylinder are respectively connected to the power source through an on / off valve, and the on / off valve is located on the side of the support platform away from the flip position.

9. The rail unloading device according to claim 8, characterized in that, It also includes a controller, wherein the opening and closing valve is an electrically controlled valve and the electrically controlled valve is electrically connected to the controller.

10. A transfer vehicle, characterized in that, include: The rail unloading device according to any one of claims 1-9; The vehicle body is connected to the unloading device on at least one side of the vehicle body perpendicular to the direction of travel. Compared to the transport position, the flipping position of the support platform is closer to the side of the vehicle body. The flipping drive unit and the drive component are both connected to the vehicle body.

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