A multi-section rail cargo transportation system

Abstract

The present application provides a multi-section rail cargo transportation system, which includes a first rail, a second rail, and a transport trolley; a guide device is provided on the transport trolley; one end of the first rail and the second rail are butted, and the top surface height of the first rail is lower than the top surface height of the second rail; wherein the guide device extends into the first rail in a first state and cooperates with the first rail for guidance, and extends into the second rail in a second state and cooperates with the second rail for guidance. The multi-section rail cargo transportation system of the present application can ensure the normal operation of the transport trolley and allow other vehicles to pass through the first rail when the first rail is pre-buried, while reducing the manufacturing cost of the cargo transportation system.

Description

Technical Field

[0001] The present application relates to the technical field of cargo transportation systems, and in particular to a multi-section rail cargo transportation system. Background Art

[0002] RGV (Guided Rail Vehicle) is commonly used for cargo transfer within workshops or warehouses. It boasts advantages such as high load capacity, smooth operation, and a low failure rate. Due to these advantages, the RGV freight transport system is currently most widely used for transporting heavy goods within workshops. In this scenario, the RGV vehicle's operating speed is not demanding, and it can meet most needs. Despite these advantages, the RGV freight transport system also presents some inherent challenges. Because the vehicle can only travel along tracks, the track layout of the RGV freight transport system is significantly limited by the on-site environment of the workshop or warehouse. Therefore, existing RGV freight transport systems mostly use fixed-length straight tracks or closed circular tracks. Furthermore, track laying is costly, especially for circular tracks with complex paths, which are significantly affected by various environmental factors such as ground subsidence, track thermal expansion and contraction, straightness, and parallelism. Construction and maintenance costs are often prohibitive.

[0003] Due to the high cost of pre-buried tracks, in order to save costs, the tracks of the RGV freight transport system are generally laid directly on the ground. However, the tracks laid on the ground will separate the ground. If other vehicles need to shuttle through the ground tracks of the RGV freight transport system, they must cross the tracks vertically. In this case, it is only possible to build a ramp in the track shuttle aisle area or pre-bury the entire track below the ground. Building a ramp in the track shuttle aisle area means laying the track on the ground, and then building a ramp above the track so that other vehicles can pass through the ramp above the track; pre-burying the entire track below the ground means excavating a foundation pit on the ground and placing the entire track into the foundation pit. There is a track groove on the track, and the RGV relies on the track groove for guidance. Since the overall track is lowered, other vehicles can pass directly on the track. The production costs of these two solutions are very high.

[0004] That is, the manufacturing cost of the cargo transportation system in the prior art is relatively high. Summary of the Invention

[0005] The present application provides a multi-section rail cargo transportation system, which aims to solve the problem of high production cost of cargo transportation systems in the prior art.

[0006] In order to solve the above technical problems, the present application provides a multi-section rail cargo transportation system, which includes a first rail, a second rail and a transport trolley;

[0007] The transport trolley is provided with a guide device;

[0008] One end of the first rail is butted against one end of the second rail, and a top surface height of the first rail is lower than a top surface height of the second rail;

[0009] Wherein, the guide device extends into the first track and cooperates with the first track for guidance in the first state, and the guide device extends into the second track and cooperates with the second track for guidance in the second state.

[0010] Optionally, the multi-section rail cargo transportation system includes a state switching device, which is used to switch the state of the guide device.

[0011] Optionally, the guide device includes a transmission device and a guide column, one end of the guide column is slidably connected to the bottom of the transport trolley, and the transmission device controls the extension and retraction of the guide column under the control of the state switching device. When the guide device is in the first state, the other end of the guide column cooperates with the first track for guidance.

[0012] Optionally, the guide device also includes a guide cavity, one end of which is fixed to the bottom of the transport trolley, and one end of the guide column extends into the guide cavity. The transmission device controls the guide column to extend and retract in the guide cavity under the control of the state switching device. When the guide device is in the first state, the other end of the guide column extends out of the guide cavity and cooperates with the first track for guidance.

[0013] Optionally, the guide device further includes a guide wheel, which is arranged at the other end of the guide cavity; when the guide device is in the second state, the other end of the guide column is retracted into the guide cavity, and the guide wheel cooperates with the second track for guidance.

[0014] Optionally, the diameter of the guide column is smaller than the diameter of the guide wheel, the guide wheel and the guide column are coaxially arranged, and one end of the guide column passes through the guide wheel and extends into the guide cavity.

[0015] Optionally, the transmission device includes a shift rod and a first elastic member arranged at an angle, a first strip opening is provided on the guide cavity, and a pivot rod is provided on the side wall of the guide column, one end of the pivot rod passes through the first strip opening and is rotatably connected to the first end of the shift rod, one end of the first elastic member is connected to the shift rod, and the other end of the first elastic member is connected to the outer wall of the guide cavity, and the state switching device shifts the second end of the shift rod to drive the guide column to extend and retract in the guide cavity; when the guide device is in the first state, the pivot rod is against the bottom end of the first strip opening; when the guide device is in the second state, the pivot rod is against the top end of the first strip opening.

[0016] Optionally, the state switching device is located on one side of the second track, and the state switching device includes a base and a blocking rod located on one side of the base, the height of one end of the blocking rod facing the first track is higher than the height of one end of the blocking rod facing the second track, and the blocking rod guides the second end of the shift rod to rise and fall when it contacts the second end of the shift rod.

[0017] Optionally, a busbar is provided on one side of the second track, and a current collector is provided on one side of the guide cavity, and the current collector extends into the busbar to obtain electrical energy from the busbar.

[0018] Optionally, a guide portion is provided at the end of the trolley line, and the guide portion includes a first guide plate and a second guide plate arranged opposite to each other, one side edge of the first guide plate and one side edge of the second guide plate are fixed to the end of the trolley line, and the distance between the first guide plate and the second guide plate gradually increases in the direction away from the trolley line.

[0019] Optionally, the multi-section rail cargo transport system includes a channel area, which is used for the passage of vehicles other than the transport cart; the passage direction of the channel area intersects with the extension direction of the first track, and the top surface height of the first track is the same as the top surface height of the channel area.

[0020] Optionally, the multi-section rail cargo transportation system includes two sections of first rails and two sections of second rails, the two sections of the first rails and the two sections of the second rails are connected end to end to form a circular rail, the first rails and the second rails are arranged at intervals, and the channel area intersects with the two sections of the first rails.

[0021] Optionally, the transport cart includes a chassis, the top surface of the chassis is used to carry goods, the bottom of the chassis is provided with multiple drive wheels and corresponding multiple drive motors, the multiple drive motors drive the corresponding drive wheels to rotate, and the top of the chassis is provided with an on-board power supply.

[0022] Optionally, the multi-section rail cargo transportation system includes a lifting device, which drives the first rail to rise and fall.

[0023] The present application provides a multi-section rail cargo transportation system, which includes a first rail, a second rail and a transport trolley; a guide device is provided on the transport trolley; one end of the first rail and the second rail are butted together, and the top surface height of the first rail is lower than the top surface height of the second rail; wherein the guide device extends into the first rail in a first state and cooperates with the first rail for guidance, and extends into the second rail in a second state and cooperates with the second rail for guidance. The multi-section rail cargo transport system of the present application creatively divides the rail into a first rail and a second rail, where the top surface height of the first rail is lower than the top surface height of the second rail in the prior art, and correspondingly, a guide device is provided at the bottom of the transport trolley, which cooperates with the first rail for guidance when in an extended state and cooperates with the second rail for guidance when in a second state, so that the transport trolley can switch tracks and travel on the first rail and the second rail with different track heights. Since the first rail and the second rail have different track heights, this structure can enable the multi-section rail cargo transport system to ensure the normal operation of the transport trolley and allow other vehicles to pass through the first rail when the first rail is pre-buried, while reducing the production cost of the cargo transport system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a multi-section rail cargo transportation system provided in an embodiment of the present application;

[0026] Figure 2 This is a schematic structural diagram of the junction of the first track and the second track in an embodiment of a multi-section rail cargo transportation system provided by an embodiment of the present application;

[0027] Figure 3 This is a schematic structural diagram of an embodiment of a multi-section rail cargo transportation system provided by the present application, in which a transport vehicle travels on a second track;

[0028] Figure 4 This is a structural diagram of a state switching device switching the state of a guide device in an embodiment of a multi-section rail-type cargo transportation system provided by an embodiment of the present application;

[0029] Figure 5This is a structural schematic diagram of a guide device in a first state in an embodiment of a multi-section rail-type cargo transportation system provided by an embodiment of the present application;

[0030] Figure 6 This is a structural diagram of the guide device in the second state in an embodiment of the multi-section rail cargo transportation system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0033] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0034] The present application provides a multi-section rail cargo transportation system, which is described in detail below.

[0035] First, an embodiment of the present application provides a multi-section rail cargo transportation system, which includes a first rail, a second rail and a transport trolley; a guide device is provided on the transport trolley; one end of the first rail and the second rail are butt-jointed, and the top surface height of the first rail is lower than the top surface height of the second rail; wherein, the guide device extends into the first rail in the first state and cooperates with the first rail for guidance, and the guide device extends into the second rail in the second state and cooperates with the second rail for guidance.

[0036] See Figure 1-3 The present application provides a multi-section rail cargo transportation system 10, which includes a first rail 11, a second rail 12, and a transport trolley 13. The transport trolley 13 can be an RGV trolley, which is mainly used for material transportation, workshop assembly, etc. Conventional RGV systems can be divided into circular rail type and linear reciprocating type according to the movement mode. The circular rail RGV system is highly efficient and can operate multiple vehicles at the same time. It generally uses aluminum alloy rails; the linear reciprocating type generally includes an RGV system that performs reciprocating motion, and its efficiency is relatively low compared to the circular RGV system.

[0037] The transport trolley 13 is provided with a guide device 17; one end of the first track 11 and the second track 12 are butted together, and the top surface height of the first track 11 is lower than the top surface height of the second track 12. The other end of the first track 11 and the other end of the second track 12 can be butted together to form a circular track. For example, the first track 11 is a straight track and the second track 12 is an arc-shaped track. The other end of the first track 11 and the other end of the second track 12 can also be free ends, and the first track 11 and the second track 12 form a straight track. In the first state, the guide device 17 extends into the first track 11 to guide through the first track 11; in the second state, the guide device 17 extends into the second track 12 to guide through the second track 12. In the prior art, the multi-section rail cargo transportation system of the present application creatively divides the rail into a first rail 11 and a second rail 12, where the top surface height of the first rail 11 is lower than the top surface height of the second rail 12. Correspondingly, a guide device 17 is provided at the bottom of the transport trolley 13. The guide device 17 cooperates with the first rail 11 for guidance when in an extended state, and cooperates with the second rail 12 for guidance when in a second state, so that the transport trolley 13 can switch tracks and travel on the first rail 11 and the second rail 12 of different track heights. This structure enables the multi-section rail cargo transportation system 10 to ensure the normal operation of the transport trolley 13 when the first rail 11 is pre-buried, and allows other vehicles to pass through the first rail 11, while reducing the production cost of the multi-section rail cargo transportation system 10. Other vehicles refer to forklifts, sorting carts, etc. in the system.

[0038] It should be noted that the “top” and “bottom” in this application are defined based on the state that the multi-section rail cargo transportation system 10 is placed on the horizontal ground, such as Figure 1 The multi-section rail cargo transportation system 10 is shown in FIG. When the multi-section rail cargo transportation system 10 is placed on other installation surfaces, the positions of the corresponding "top" and "bottom" are adjusted accordingly.

[0039] In the embodiment of the present application, the multi-section rail cargo transport system 10 includes a passageway 14 for vehicles other than the transport cart 13. The passageway 14 extends in a direction that intersects the direction of extension of the first track 11. For example, the passageway 14 can be used for vehicles such as forklifts. Specifically, the surface of the passageway 14 is flat.

[0040] Further, the transport trolley 13 is provided with two guide devices 17, and the two guide devices 17 are spaced apart in the direction of motion of the transport trolley 13. Guiding the running direction of the transport trolley 13 by the two guide devices 17 can further prevent the transport trolley 13 from deviating from the track.

[0041] In a specific embodiment, the top surface height of the first track 11 is the same as the top surface height of the channel area 14, and the bottom surface height of the second track 12 is the same as the top surface height of the channel area 14. That is, there is no height difference between the channel area 14 and the ground, so that the vehicle can move in various areas of the system. Of course, the bottom surface height of the second track 12 may also be different from the top surface height of the channel area 14. At this time, vehicles such as forklifts can pass through the first track 11 from the channel area 14, which can avoid the situation in the prior art where the first track 11 protrudes from the channel area 14, causing the forklift to be unable to pass through the first track 11 or forcing it to pass through the first track 11, causing the forklift to be unstable and the track to be damaged. The channel area 14 and the second track 12 can be laid on the ground, and the first track 11 can be pre-buried under the ground. Of course, in other embodiments, the top surface height of the first rail 11 can be higher than the top surface of the channel area 14, and the bottom surface of the first rail 11 can be lower than the top surface of the channel area 14. The first rail 11 is pre-buried, and a portion protrudes above the top surface of the channel area 14. Compared with the prior art, the first rail 11 is entirely located above the top surface of the channel area 14, which can reduce the probability of forklift instability and rail damage. The height difference between the top surface of the first rail 11 and the channel area 14 can be set according to specific circumstances.

[0042] Furthermore, the multi-section rail freight transport system 10 includes two first rail sections 11 and two second rail sections 12, which are connected end-to-end to form a circular track. The first rail sections 11 and the second rail sections 12 are spaced apart, and a passage area 14 intersects the two first rail sections 11. The two first rail sections 11 and the two second rail sections 12 form a circular track. Both first rail sections 11 are pre-buried in the ground, allowing other vehicles to enter the circular track from one first rail section 11 and exit the circular track from the other first rail section 11 without the need for vehicles to turn around or reverse. Of course, the multi-section rail freight transport system 10 can also be configured with multiple first rail sections 11 and multiple second rail sections 12, with the first rail sections 11 and the second rail sections 12 spaced apart. When there are multiple first rail sections 11 and multiple second rail sections 12, at least one of the multiple first rail sections 11 can be pre-buried to provide an entrance and exit for other vehicles. Of course, the more first rail sections 11 are pre-buried, the more entrances and exits can be provided, which increases the cost. This setting can be determined based on actual conditions. On the one hand, the high efficiency advantage of the circular track can be fully utilized, and on the other hand, the disadvantage of the inner area of ​​the circular track being unusable by vehicles such as forklifts can be overcome. This can improve the efficiency of the multi-section rail cargo transportation system 10 while increasing the site utilization rate of the multi-section rail cargo transportation system 10 and reducing the cost of the multi-section rail cargo transportation system 10. The passage area 14 can be a road paved with concrete, asphalt, steel plates, or other areas for forklifts, carts, etc. to pass through.

[0043] In the embodiment of the present application, the transport trolley 13 includes a chassis 131. The top surface of the chassis 131 is used to carry cargo. The bottom of the chassis 131 is provided with multiple drive wheels 132 and corresponding multiple drive motors 133. The multiple drive motors 133 drive the corresponding drive wheels 132 to rotate. It should be noted that any transport trolley that can be equipped with the guide device 17 of the present application is applicable to the present application.

[0044] Specifically, two drive wheels 132 and two corresponding drive motors 133 are provided at the bottom of the chassis 131. The drive motor 133 can be a servo motor. Two universal wheels are also provided at the bottom of the chassis 131. The two drive wheels 132 are symmetrically arranged at the bottom of the chassis 131, and the two universal wheels are symmetrically arranged at the bottom of the chassis 131. When the transport trolley 13 moves on the second track 12, the two drive wheels 132 are respectively located on both sides of the second track 12, and the two universal wheels are respectively located on both sides of the second track 12. Two universal wheels are also provided at the bottom of the chassis 131. Each drive wheel 132 is driven by a servo motor. At the bend, the servo motor performs differential transmission according to the position of the vehicle to achieve balanced speed of the drive wheels 132 on both sides.

[0045] Further reading Figure 4-6 In an embodiment of the present application, the multi-section rail cargo transport system 10 includes a state switching device 19 located on one side of the first rail 11. The state switching device 19 is used to switch the state of the guide device 17. The state switching device 19 switches the state of the guide device 17 mechanically. In other embodiments, the state switching device 19 can also control the guide device 17 to switch the state of the guide device 17 through wireless communication. For example, the state switching device 19 is a distance detection sensor. The state switching device 19 detects the distance between the transport trolley 13 and the state switching device 19. When the state switching device 19 detects that the distance between the transport trolley 13 and the state switching device 19 meets a predetermined distance, the state switching device 19 sends a control instruction wirelessly to switch the state of the guide device 17. The state switching device 19 can be set on the transport trolley 13. For example, the state switching device 19 is a position sensor set on the transport trolley 13. The state switching device 19 obtains the real-time position of the transport trolley 13. When the position of the transport trolley 13 meets a preset position condition, the guide device 17 switches its state.

[0046] In one specific embodiment, the guide device 17 includes a transmission device 175, a guide cavity 174, a guide post 173, and a guide wheel 171. One end of the guide cavity 174 is fixed to the bottom of the transport trolley 13, and the guide wheel 171 is disposed at the other end of the guide cavity 174. One end of the guide post 173 extends into the guide cavity 174, and the transmission device 175, under the control of the state switching device 19, controls the guide post 173 to extend and retract within the guide cavity 174. When the guide device 17 is in the first state, the other end of the guide post 173 extends out of the guide cavity 174 and cooperates with the second track 12 for guidance. When the guide device 17 is in the second state, the other end of the guide post 173 retracts within the guide cavity 174, and the guide wheel 171 cooperates with the first track 11 for guidance. The guide post 173 extends in the vertical direction and thus retracts in the vertical direction. Of course, in other embodiments, the guide post 173 can be arranged at an angle to the vertical direction, for example, at an angle of 10 degrees, 20 degrees, or the like.

[0047] In other embodiments, the guide device 17 may also include only a guide post 173. The guide post 173 is fixedly connected to the transport trolley 13. The chassis 131 of the transport trolley 13 is a liftable chassis. The transport trolley 13 raises and lowers the chassis to raise and lower the guide post 173, so that the guide post 173 switches between the first state and the second state.

[0048] Specifically, the first track 11 includes a first base plate 112 and two first side plates 111 that are tilted up on either side of the first base plate 112. The first base plate 112 and the two first side plates 111 together form a U-shaped first track 11. The two first side plates 111 respectively contact the side surfaces of the guide posts 173, allowing the guide posts 173 to move along the first track 11. The second track 12 includes a second base plate 122 and two second side plates 121 that are tilted up on either side of the second base plate 122. The second base plate 122 and the two second side plates 121 together form a U-shaped second track 12. The two second side plates 121 respectively contact the wheel surfaces of the guide wheels 171, allowing the guide wheels 171 to move along the second track 12.

[0049] Optionally, the diameter of guide post 173 is smaller than that of guide wheel 171. Guide wheel 171 and guide post 173 are coaxially arranged, and one end of guide post 173 passes through guide wheel 171 and extends into guide cavity 174. Specifically, the top surface height of first bottom plate 112 is lower than the top surface height of second bottom plate 122, and the distance between the two second side plates 121 is greater than the distance between the two first side plates 111. The narrow first track 11 facilitates forklifts to pass over the first track 11.

[0050] In this embodiment, the transmission device 175 includes a lever 176 and a first elastic member 177 arranged at an angle. A first strip-shaped opening 1741 is provided in the guide cavity 174. A pivot 178 is provided on the sidewall of the guide post 173. One end of the pivot 178 passes through the first strip-shaped opening 1741 and is rotatably connected to the first end of the lever 176. One end of the first elastic member 177 is connected to the lever 176, and the other end of the first elastic member 177 is connected to the outer wall of the guide cavity 174. The state switching device 19 controls the lever 176 to move, thereby driving the guide post 173 to extend and retract within the guide cavity 174. When the guide device 17 is in the first state, the pivot 178 abuts the bottom end of the first strip-shaped opening 1741. When the guide device 17 is in the second state, the pivot 178 abuts the top end of the first strip-shaped opening 1741. The first elastic member 177 is used to maintain the state of the guide post 173.

[0051] Specifically, the first strip-shaped opening 1741 extends in the same direction as the guide post 173. The pivot rod 178, guided by the first strip-shaped opening 1741, drives the guide post 173 to extend and retract. The first elastic member 177 may be a spring or a spring. The first elastic member 177 extends in a direction that intersects the direction of the first strip-shaped opening 1741. The end of the first elastic member 177 connected to the guide cavity 174 is higher than the bottom end of the first strip-shaped opening 1741 and higher than the top end of the first strip-shaped opening 1741.

[0052] In other embodiments, the transmission device 175 can be a linear drive device such as a pneumatic cylinder or a hydraulic cylinder that provides linear driving force. In this case, the two ends of the linear drive device are respectively connected to the guide cavity 174 and the guide column 173. The linear drive device drives the guide column 173 to extend and retract during extension. When the state switching device 19 detects that the distance between the transport trolley 13 and the state switching device 19 meets the predetermined distance, it wirelessly transmits a control command to control the extension and retraction of the transmission device 175, driving the guide column 173 to extend and retract.

[0053] Furthermore, the transmission device 175 includes a second elastic member 179, one end of which is connected to the guide cavity 174, and the other end of the second elastic member 179 is connected to the shift rod 176. The second elastic member 179 and the shift rod 176 are located on the same side of the guide cavity 174. The second elastic member 179 is used to bear part of the weight of the shift rod 176. The second elastic member 179 can replace the first elastic member 177 in bearing part of the weight of the shift rod 176, thereby reducing the bearing capacity of the first elastic member 177 and preventing damage to the first elastic member 177.

[0054] In the embodiment of the present application, the state switching device 19 includes a blocking rod 191 located on one side of the base 19. The end of the blocking rod 191 facing the first track 11 is higher than the end of the blocking rod 191 facing the second track 12. When the blocking rod 191 contacts the second end of the detent rod 176, it guides the second end of the detent rod 176 up and down. The blocking rod 191 guides the second end of the detent rod 176 downward when the transport trolley 13 enters the second track 12 from the first track 11; the blocking rod 191 guides the second end of the detent rod 176 upward when the transport trolley 13 enters the first track 11 from the second track 12. A state switching device 19 is provided at each junction between the first track 11 and the second track 12, thereby enabling the transport trolley 13 to switch between the first track 11 and the second track 12.

[0055] Furthermore, a second strip-shaped opening 123 is formed on the second bottom plate 122 . The second strip-shaped opening 123 is used to accommodate the other end of the guide post 173 during its extension process, thereby preventing the other end of the guide post 173 from hitting the second rail 12 when extended.

[0056] When the guide device 17 is in the second state, the pivot rod 178 is held against the top of the first strip-shaped opening 1741, and the transport trolley 13 is guided in the second track 12 by the guide wheel 171. When the transport trolley 13 enters the first track 11 from the second track 12, the blocking rod 191 contacts the second end of the lever 176, raising the height of the second end of the lever 176. When the second end of the lever 176 is raised to a height higher than the top of the first strip-shaped opening 1741, the first end of the lever 176 moves downward under the elastic force of the first elastic member 177, driving the guide column 173 to extend and cooperate with the first track 11 for guidance, and the guide device 17 enters the first state; when the guide device 17 is in the first state When the transport trolley 13 is in the first track 11, the pivot rod 178 abuts against the bottom end of the first strip-shaped opening 1741, and the transport trolley 13 is guided by the guide column 173 in the first track 11. When the transport trolley 13 enters the second track 12 from the first track 11, the blocking rod 191 abuts against the second end of the lever 176, lowering the height of the second end of the lever 176. When the second end of the lever 176 is lowered below the bottom end of the first strip-shaped opening 1741, the first end of the lever 176 moves upward under the elastic force of the first elastic member 177, causing the guide column 173 to retract. The guide wheel 171 cooperates with the second track 12 for guidance, and the guide device 17 enters the second state, thereby completing the switch between the two states and achieving track switching. Mechanically switching the state of the guide device 17 by the state switching device 19 not only simplifies the structure and reduces costs, but also has higher reliability, compared to the method of collecting the position of the transport trolley 13 and then controlling the extension and retraction of the guide device 17 through wireless communication commands.

[0057] Furthermore, the base 19 includes a fixed plate 195, a first connecting plate 192, a second connecting plate 193, and a connecting column 194. The fixed plate 195 is used to connect to the ground, and one side of the first connecting plate 192 is connected to one side of the second connecting plate 193 and is arranged at an angle. Both ends of the blocking rod 191 are fixed to the first connecting plate 192. One end of the connecting column 194 is fixed to the fixed plate 195, and the other end of the connecting column 194 passes through the second connecting plate 193 and is connected to the second connecting plate 193 by a nut. By adjusting the height of the nuts on both sides of the second connecting plate 193, the height of the second connecting plate 193 can be adjusted, thereby adjusting the height of the blocking rod 191 to adapt to the transport trolley 13.

[0058] In the embodiment of the present application, a busbar 15 is provided on one side of the second track 12, and a current collector 172 is provided on one side of the guide cavity 174. The current collector 172 extends into the busbar 15 to draw power from the busbar 15. The busbar 15 maintains power to the transport trolley 13 during its movement. The busbar 15 is arranged parallel to the second track 12 and disconnected at the first track 11. Busbars 15, also known as conductors, are a set of power transmission devices that provide power to mobile devices. Common busbars 15 include single-pole aluminum busbars, single-pole copper busbars, steel busbars, multi-pole tubular busbars, seamless busbars, and copper busbars. As the transport trolley 13 moves, it must constantly change position. At each different position, the transport trolley 13 must have access to a power source; otherwise, it will be unable to continue moving. The busbar 15 consists of several conductors laid parallel to the transport trolley's 13 track, connected to a power source. A current collector 172, which draws power from a conductor, is mounted on the transport trolley 13. As the trolley 13 moves, the current collector 172 synchronizes with the trolley 13 and readily draws power from the busbar 15, supplying it to the trolley 13 to keep it moving. An onboard power supply 134 is located on top of the chassis 131. This power supply 134 supplies power to the trolley 13 when it travels on the first track 11 and draws and stores power from the busbar 15 when it travels on the second track 12.

[0059] In the embodiment of the present application, a guide portion 18 is provided at the end of the trolley line 15. The guide portion 18 includes a first guide plate 181 and a second guide plate 182 arranged opposite to each other. One side of the first guide plate 181 and one side of the second guide plate 182 are fixed to the end of the trolley line 15. The distance between the first guide plate 181 and the second guide plate 182 gradually increases in the direction away from the trolley line 15. For example, the first guide plate 181 and the second guide plate 182 are arranged in an "eight" shape. Since the trolley line 15 of the present application is disconnected at the first rail 11, when the transport trolley 13 runs on the first rail 11, the trolley line 15 is disconnected from the current collector 172. When the current collector 172 enters the trolley line 15, the "eight"-shaped guide portion 18 enables the current collector 172 to enter under the guidance of the first guide plate 181 and the second guide plate 182, making it easier for the current collector 172 to enter the trolley line 15. The onboard power supply 134 supplies power to the transport trolley 13 when the transport trolley 13 travels on the first track 11 , and obtains power from the busbar 15 for charging when the transport trolley 13 travels on the second track 12 .

[0060] Furthermore, a reinforcing plate 183 is connected between the first guide plate 181 and the second guide plate 182 , and the reinforcing plate 183 can maintain the distance between the first guide plate 181 and the second guide plate 182 .

[0061] Furthermore, the multi-section rail cargo transport system 10 includes a lifting device that drives the first rail 11 to rise and fall. Since the first rail 11 can be raised and lowered, the height of the first rail 11 can be adjusted to facilitate maintenance of the first rail 11 or to adapt to guide devices 17 of different telescopic lengths.

[0062] The above is a detailed introduction to a cargo transportation system provided by an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A multi-section rail cargo transportation system, characterized in that: The multi-section rail cargo transportation system includes a first rail, a second rail and a transport trolley; The transport trolley is provided with a guide device; One end of the first rail is butted against one end of the second rail, and a top surface height of the first rail is lower than a top surface height of the second rail; Wherein, the guide device extends into the first track and cooperates with the first track for guidance in the first state, and extends into the second track and cooperates with the second track for guidance in the second state; The guide device includes a transmission device, a guide column, a guide cavity and a guide wheel; the diameter of the guide column is smaller than the diameter of the guide wheel, the guide wheel and the guide column are coaxially arranged, and one end of the guide column passes through the guide wheel and extends into the guide cavity; The transmission device controls the extension and retraction of the guide column. When the guide device is in the first state, the other end of the guide column extends out of the guide cavity and cooperates with the first track for guidance; when the guide device is in the second state, the other end of the guide column retracts into the guide cavity, and the guide wheel cooperates with the second track for guidance.

2. The multi-section rail cargo transportation system according to claim 1, characterized in that: The multi-section track type cargo transportation system includes a state switching device, and the state switching device is used to switch the state of the guide device.

3. The multi-section rail cargo transportation system according to claim 2, characterized in that: One end of the guide column is slidably connected to the bottom of the transport trolley, and the transmission device controls the extension and retraction of the guide column under the control of the state switching device.

4. The multi-section rail cargo transportation system according to claim 3, characterized in that: One end of the guide cavity is fixed to the bottom of the transport trolley, and the transmission device controls the guide column to extend and retract in the guide cavity under the control of the state switching device.

5. The multi-section rail cargo transportation system according to claim 4, characterized in that: The guide wheel is arranged at the other end of the guide cavity.

6. The multi-section rail cargo transportation system according to claim 4, characterized in that: The transmission device includes a shift rod and a first elastic member arranged at an angle, the guide cavity is provided with a first strip opening, the side wall of the guide column is provided with a pivot rod, one end of the pivot rod passes through the first strip opening and is rotatably connected to the first end of the shift rod, one end of the first elastic member is connected to the shift rod, and the other end of the first elastic member is connected to the outer wall of the guide cavity, the state switching device shifts the second end of the shift rod to drive the guide column to extend and retract in the guide cavity; when the guide device is in the first state, the pivot rod is against the bottom end of the first strip opening; when the guide device is in the second state, the pivot rod is against the top end of the first strip opening.

7. The multi-section rail cargo transportation system according to claim 6, characterized in that: The state switching device is located on one side of the second track, and the state switching device includes a base and a blocking rod located on one side of the base. The height of one end of the blocking rod facing the first track is higher than the height of the other end of the blocking rod facing the second track. When the blocking rod contacts the second end of the shifting rod, it guides the second end of the shifting rod to rise and fall.

8. The multi-section rail cargo transportation system according to claim 4, characterized in that: A busbar is provided on one side of the second track, and a current collector is provided on one side of the guide cavity. The current collector extends into the busbar to obtain electrical energy from the busbar.

9. The multi-section rail cargo transportation system according to claim 8, characterized in that: A guide portion is provided at the end of the trolley line, and the guide portion includes a first guide plate and a second guide plate arranged opposite to each other. One side edge of the first guide plate and one side edge of the second guide plate are fixed to the end of the trolley line, and the distance between the first guide plate and the second guide plate gradually increases in the direction away from the trolley line.

10. The multi-section rail cargo transportation system according to claim 1, characterized in that: The multi-section rail cargo transport system includes a channel area, which is used for the passage of vehicles other than the transport cart; the passage direction of the channel area intersects with the extension direction of the first track, and the top surface height of the first track is the same as the top surface height of the channel area.

11. The multi-section rail cargo transportation system according to claim 10, characterized in that: The multi-section rail cargo transportation system includes two sections of first rails and two sections of second rails, the two sections of the first rails and the two sections of the second rails are connected end to end to form a circular rail, the first rails and the second rails are arranged at intervals, and the channel area intersects with the two sections of the first rails.

12. The multi-section rail cargo transportation system according to claim 1, characterized in that: The transport cart includes a chassis, the top surface of the chassis is used to carry goods, the bottom of the chassis is provided with multiple drive wheels and corresponding multiple drive motors, the multiple drive motors drive the corresponding drive wheels to rotate, and the top of the chassis is provided with an on-board power supply.

13. The multi-section rail cargo transportation system according to claim 1, characterized in that: The multi-section rail cargo transportation system includes a lifting device, which drives the first rail to rise and fall.

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