Turn-back type bulk cargo unloading station and method

Abstract

The invention relates to a turn-back type bulk cargo unloading station which comprises a rail system, an unloading system, a sweeping system and a shunting system, the rail system comprises a heavy vehicle line and an empty vehicle line which are arranged in parallel, the unloading system comprises an unloading area, and the sweeping system comprises a sweeping area. The unloading area and the sweeping area are sequentially arranged in the extending direction of the loaded train line, and the shunting system is used for conveying trains on the loaded train line to the empty train line. The invention further provides a turn-back type bulk cargo unloading method. According to the invention, unloading and sweeping are designed, so that the problem of incomplete cleaning of excess materials in the traditional process is effectively solved, the cargo loss is reduced, the dust pollution in the transportation process is avoided, the environment-friendly transportation requirement is met, the function division is clear, and by arranging the heavy vehicle line, the unloading area, the sweeping area and the empty vehicle line, the transportation efficiency is improved. The separation of a heavy vehicle operation flow and an empty vehicle gathering flow is realized, so that the traffic flow management is clearer and more efficient.

Description

Technical Field

[0001] This invention relates to the field of railway loading and unloading technology, specifically to a turnaround bulk cargo unloading station and method. Background Technology

[0002] Analysis of the current unloading process for bulk cargo:

[0003] Currently, a large number of existing freight railway dedicated lines and branch lines undertake the transportation of bulk commodities such as coal, ore, and sand and gravel. Their loading and unloading operations mainly use major loading and unloading machinery such as tippers, screw unloaders, grab bucket unloaders, and loaders in conjunction with relevant railway loading and unloading yards to carry out unloading operations.

[0004] tippler unloading process

[0005] Railway tippler systems are widely used in large ports, power plant coal unloading yards, and coal storage and distribution bases. These scenarios are equipped with advanced tippler equipment, dedicated heavy-duty transport railways, and specific vehicle types. The tippler process is a rapid unloading method that uses tilting wagons to unload cargo from the top of the wagon in one go. It has low requirements for wagon type and is suitable for all open wagon models. Tipplers are typically designed with single, double, triple, and quadruple tipping techniques based on the number of wagons they can tip at once. After the wagons are aligned with the machine position, the tippler secures them and then rotates the open wagon 180°. Almost no manual cleaning is needed inside the wagon compartment, and the unloading speed depends primarily on the tippler's efficiency. This unloading process requires the construction of large, deep pits to accommodate the tippler equipment, receiving points, and conveyor belt corridors. The overall system investment is often high due to limitations in site size and geological conditions.

[0006] 2. Self-unloading unloading process

[0007] Self-dumping unloading technology, combined with an unloading pit, is a highly efficient unloading process, primarily suitable for bottom-opening funnel-type wagons. During unloading, the bottom door of the funnel is opened, and the material is automatically discharged under its own weight. The discharged material then enters a belt conveyor via a cargo trough and is transferred to the stockyard. The material's flowability determines the unloading speed. This unloading process requires a locomotive to provide the vehicle's movement, resulting in significant locomotive time commitment. Furthermore, it is constrained by the vertical relationship between the railway loading / unloading line, the funnel hopper, and the belt conveyor system. The loading / unloading line often needs to be located on a bridge or require the construction of a deep pit, leading to relatively high investment costs.

[0008] 3. Screw unloader

[0009] Screw unloading technology typically operates in conjunction with unloading pits, replacing manual cleaning and improving work efficiency. Screw unloaders are mainly used for side-opening, flat-bottomed open wagons. The screw unloader moves along the tracks on both sides of the wagon to be unloaded, inserting a horizontal bidirectional (or unidirectional) screw into the side-opening open wagon, pushing the material to both sides or one side of the wagon and into the unloading pits on either side of the railway. Newer screw unloaders use a vertical screw insertion into the open wagon, lifting the material vertically and then conveying it to a silo via a belt conveyor. Unloaders are classified as bridge-type and gantry-type according to their track position. Screw unloading technology has good adaptability to different wagon types, but requires relatively high material particle size. Its efficiency is moderate, and its investment is low, making it suitable for medium-capacity freight yards.

[0010] 4. Grab bucket unloader

[0011] The grab bucket unloading process utilizes ordinary gantry cranes with grab buckets, tire (track) cranes, and modified excavators to directly grab materials inside the truck bed. The unloaded materials are mainly piled up on-site or directly loaded onto trucks for transfer, resulting in low efficiency.

[0012] However, with the optimization of transportation structures and the development of multimodal transport, existing bulk cargo handling systems face numerous challenges. On the one hand, tippler unloading systems and self-unloading systems often require the construction of foundation pits up to 18 meters deep due to the vertical relationship between mechanical equipment, material drop points, and belt conveyors. This not only results in high investment (approximately 20 million to 100 million RMB excluding equipment foundation pit civil engineering) but also becomes a major engineering challenge in certain terrain and geological conditions (such as soft soil or proximity to water), greatly increasing construction difficulty and posing certain safety hazards. On the other hand, traditional loading and unloading processes rely mainly on fixed equipment, lacking flexibility and adaptability to different vehicle types and cargo types. Furthermore, existing systems still have shortcomings in areas such as residual material cleanup, information management (e.g., real-time monitoring, data integration), and automation (e.g., unmanned operation), making it difficult to meet the development requirements of green, low-carbon, and smart logistics. Summary of the Invention

[0013] The purpose of this invention is to provide a turnaround bulk cargo unloading station and method, which can at least solve some of the defects in the prior art.

[0014] To achieve the above objectives, the present invention provides the following technical solution: a turnaround bulk cargo unloading station, comprising a track system, an unloading system, a cleaning system, and a shunting system. The track system includes parallel loaded train lines and empty train lines. The unloading system includes an unloading area, and the cleaning system includes a cleaning area. The unloading area and the cleaning area are arranged sequentially along the extension direction of the loaded train line. The shunting system is used to transport trains on the loaded train line to the empty train line.

[0015] Furthermore, the shunting system includes a moving platform, which is located on the side of the cleaning area away from the unloading area, and the loaded vehicle line and the empty vehicle line are both set perpendicular to the moving platform.

[0016] Furthermore, the shunting system also includes a loaded car dispatcher and an empty car dispatcher. The loaded car dispatcher is used to send loaded cars to the unloading area, and the empty car dispatcher is used to send empty cars to the empty car line.

[0017] Furthermore, it also includes a conveying system for transporting the unloaded material away, the conveying system being located outside the unloading system.

[0018] Furthermore, the material conveying system includes a closed belt conveyor corridor, which is located on the outside of the unloading system.

[0019] Furthermore, the unloading area is equipped with a screw unloader, which spans above the unloading area. The inlet of the screw unloader faces the unloading area, and the outlet of the screw unloader is connected to the conveying system.

[0020] Furthermore, the cleaning area is equipped with a cleaning machine, which is positioned above the cleaning area of ​​the heavy vehicle line, and the unloading port of the cleaning machine is connected to the material conveying system.

[0021] This invention provides another technical solution: a method for unloading bulk cargo using a turnaround system, used at the aforementioned turnaround bulk cargo unloading station, comprising the following steps:

[0022] S1, the vehicles waiting to be unloaded on the loaded vehicle line enter the unloading area, complete the unloading in the unloading area, and send out the unloaded materials;

[0023] S2, the vehicles to be unloaded after being unloaded in the unloading area enter the cleaning area, are cleaned in the cleaning area, and the cleaned materials are sent out;

[0024] S3, after passing through the cleaning area, the empty cars are sent to the empty car line by the shunting system.

[0025] Furthermore, in steps S1 and S2, a conveying system is used to transport the unloaded and cleaned materials away.

[0026] Furthermore, a screw unloader is used to unload materials in the unloading area, and a sweeper is used to clean the cleaning area.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The design of unloading and cleaning effectively solves the problem of incomplete cleaning of residual materials in traditional processes, which reduces cargo loss and avoids dust pollution during transportation, meeting the requirements of environmentally friendly transportation. Moreover, the functional zoning is clear. By setting up loaded vehicle lines, unloading areas, cleaning areas and empty vehicle lines, the loaded vehicle operation flow and empty vehicle assembly flow are separated, making vehicle flow management clearer and more efficient.

[0029] 2. By integrating shunting equipment such as loaded car dispatching machines, moving platforms, and empty car dispatching machines, a closed linear operation cycle is constructed. Vehicles move within the system by relying on these specialized devices, eliminating the need for shunting locomotives to frequently enter the core operation area for coordination. This reduces locomotive occupancy time and improves the automation and continuity of operations.

[0030] 3. Compared to traditional tippers or self-unloading systems that require the construction of foundation pits up to 18 meters deep, this solution uses a surface unloading point approach, with all systems located on the ground. This significantly reduces the amount of earthwork excavation and the difficulty and cost of foundation pit support. It makes the system feasible under certain adverse geological conditions such as soft soil or proximity to water, transforming it from a "highly dangerous project" into a viable option. This significantly reduces safety hazards and civil engineering investment, saving approximately 20 million to 100 million yuan in foundation pit civil engineering costs.

[0031] 4. Applicable to a series of domestic standard railway open wagons such as C80, C70, C60, C61, and C62, with lower requirements for wagon type. Unlike dumping processes that rely on specific bottom-opening funnel wagons, it offers flexible layout. The transverse track layout (with loaded and empty wagon tracks side by side) may save more space compared to the traditional longitudinal layout, and has a stronger ability to modify and adapt to existing dedicated lines or freight yards with limited space.

[0032] 5. Since unloading takes a long time, while cleaning and moving take a short time, and the equipment and engineering investment for a 2-car moving platform is smaller than that for a 4-car moving platform, a fast and slow cycle operation mode is adopted, with unloading in a large cycle of 4 cars and cleaning and moving in a small cycle of 2 cars. This allows the unloading, cleaning and moving processes to take different times and can be carried out in small batches at a fast pace, which is conducive to improving equipment utilization and overall operation efficiency. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the layout of a turnaround bulk cargo unloading station provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a screw unloader in a turnaround bulk cargo unloading station provided in an embodiment of the present invention;

[0035] Figure 3 This is a flowchart of a reversible bulk cargo unloading method provided in an embodiment of the present invention. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1:

[0038] Please see Figure 1 and Figure 2 This invention provides a turnaround bulk cargo unloading station, including a track system, an unloading system, a cleaning system, and a shunting system. The track system includes parallel loaded and empty tracks. The unloading system includes an unloading area, and the cleaning system includes a cleaning area. The unloading area and the cleaning area are arranged sequentially along the extension direction of the loaded track. The shunting system is used to transfer trains on the loaded track to the empty track. In this embodiment, the unloading and cleaning design effectively solves the problem of incomplete cleaning of residual materials in traditional processes, reducing cargo loss and avoiding dust pollution during transportation, thus meeting environmental protection transportation requirements. Moreover, the functional zoning is clear. By setting up loaded tracks, unloading areas, cleaning areas, and empty tracks, the loaded vehicle operation flow and the empty vehicle assembly flow are separated, making traffic flow management clearer and more efficient.

[0039] See Figure 1 and Figure 2 The shunting system includes a moving platform located on the side of the cleaning area away from the unloading area. Both the loaded car line and the empty car line are perpendicular to the moving platform. The system also includes a loaded car dispatcher and an empty car dispatcher. The loaded car dispatcher moves loaded cars to the unloading area, and the empty car dispatcher moves empty cars to the empty car line. In this implementation, by integrating shunting equipment such as the loaded car dispatcher, the moving platform, and the empty car dispatcher, a closed linear operation cycle is constructed. Vehicles move within the system using these specialized devices, eliminating the need for frequent locomotive entry into the core operation area. This reduces locomotive occupancy time, improves the automation and continuity of operations, and designs a core process flow of "alignment → unloading → cleaning → moving → assembly." Each step is linked by signals, ensuring a compact and orderly operation, reducing waiting time, and improving overall unloading efficiency. Vehicles awaiting unloading are loaded cars, and vehicles that have passed through the unloading and cleaning areas are empty cars.

[0040] See Figure 1 and Figure 2The turnaround bulk cargo unloading station also includes a conveying system for transporting the unloaded materials, located outside the unloading system. The conveying system includes a closed belt conveyor corridor located outside the unloading system. The unloading area is equipped with a screw unloader, which spans above the unloading area. The screw unloader's inlet faces the unloading area, and its outlet is connected to the conveying system. The cleaning area is equipped with a sweeper, which spans above the cleaning area of ​​the loaded vehicle line, and its outlet is connected to the conveying system. In this embodiment, compared to traditional tippers or self-unloading systems requiring the construction of a pit up to 18 meters deep, this solution uses a planar unloading point, with all systems located on the ground, significantly reducing earthwork excavation and the difficulty and cost of pit support. This system transforms "highly dangerous projects" into feasible ones under adverse geological conditions such as soft soil and near water, significantly reducing safety hazards and civil engineering investment, saving approximately 20 million to 100 million yuan in foundation pit construction costs. The core unloading equipment uses a relatively low-cost walking screw unloader, which is more economical in terms of overall equipment investment compared to large tippler systems. The screw unloader has an operating capacity of up to 2 million tons per year. The material conveying system uses a closed belt conveyor to receive and transport materials, effectively reducing dust diffusion during the unloading process, which aligns with the development trend of green logistics. It is suitable for a series of domestic standard railway open wagons such as C80, C70, C60, C61, and C62, with lower requirements for wagon type. Unlike self-unloading processes that rely on specific bottom-opening funnel wagons, it offers flexible layout. The transverse track layout (with loaded and empty tracks side by side) may save more space compared to the traditional longitudinal layout, and has a stronger ability to modify and adapt to existing dedicated lines or freight yards with limited space. Because unloading takes longer than cleaning and moving, and because a two-car moving platform requires less equipment and engineering investment than a four-car moving platform, a cyclical operation mode is adopted. This mode involves a large loop of unloading four cars, with a smaller loop of cleaning and moving two cars per loop. This combination of fast and slow cycles in groups of 2-4 cars allows for varying times for unloading, cleaning, and moving, enabling small-batch, fast-paced operations. This improves equipment utilization and overall operational efficiency.

[0041] The following is a detailed implementation method of this system:

[0042] Please see Figure 1 and Figure 2 This embodiment proposes a turnaround bulk cargo unloading station. The turnaround shunting operation mode involves setting up a fixed horizontal unloading point at the end of the loading and unloading line. A low-cost walking screw unloader is used for unloading operations, combined with a fully automated residual coal cleaning subsystem, forming a complete and efficient bulk cargo unloading system that does not require locomotive power. This unloading system consists of a track system, an unloading system, a conveying system, and a shunting system. Specifically:

[0043] 1. Track system:

[0044] The loading and unloading yard has one loaded vehicle line and one empty vehicle line, arranged in a horizontal row. Both lines can accommodate the parking of a whole train of vehicles. A vehicle moving platform is provided between the loaded vehicle line and the empty vehicle line to ensure that vehicles gather on the empty vehicle line after unloading. Fixed vehicle stops and sliding vehicle stops are installed at the ends of both lines.

[0045] The loaded vehicle line is the only channel for all loaded vehicles to enter the system and complete the operation process. The loaded vehicle line enters the unloading area and passes through the unloading area (screw unloader working area), the cleaning area and the vehicle moving platform in sequence, forming a continuous production line that orderly completes the core process flow of "alignment -> unloading -> cleaning -> vehicle moving".

[0046] Empty vehicle line: This is the only channel for transporting vehicles that have completed unloading to the exit. Its core functions are to achieve "operation separation" and "vehicle flow management", orderly complete "assembly -> empty vehicle departure" to ensure the linear operation of core operations, and efficiently and orderly organize the exit of empty vehicles.

[0047] 2. Unloading system:

[0048] A screw unloader is used to unload the material from arriving heavy trucks. The material can then be transferred via its own conveyor to a belt conveyor inside the coal shed for further transport. Figure 2 As shown, the screw unloader has an operating capacity of up to 200×10⁴ t / a, and one screw unloader is deployed for coal unloading operations.

[0049] 3. Shunting system:

[0050] It accepts materials from trains and its main components include one loaded car shifter, one empty car shifter, two loaded car line clamps, and one double-car transfer station.

[0051] Overall design of the shunting system:

[0052] ① The arrival and departure area, unloading area and empty car line are arranged in a longitudinal pattern.

[0053] ②Applicable vehicles: DF diesel locomotives and standard railway open wagons currently in operation in China, including C80, C70, C60, C61, C62, etc.

[0054] ③ Control level: Fully automatic program control (excluding manual unhooking); manual control at the control panel; manual control at the ground control box.

[0055] 4. Cleaning system:

[0056] The cleaning system uses a mobile sweeper, which is installed above the cleaning area of ​​the loaded vehicle line and behind the unloading area. Its unloading port connects to the conveying system to further clean the residual material on the inner walls and floor of the vehicles after unloading by the screw unloader. One mobile sweeper is configured in the cleaning area for cleaning operations. The sweeper performs cleaning after the screw unloader has finished unloading. The cleaning area is the same length as the unloading area, and its length is equal to the number of vehicles in one cycle of operation, generally set at 2-4 vehicles.

[0057] 5. Material conveying system

[0058] The material conveying system is a closed belt corridor composed of fixed belt conveyors, which is arranged outside the unloading area and the cleaning operation area. It is used to receive and continuously convey the materials unloaded by the screw unloader and the sweeper to the storage yard.

[0059] 6. Shunting unit:

[0060] One shunting system is installed, mainly consisting of one shunting locomotive, one loaded car dispatching locomotive, one moving platform, and one empty car dispatching locomotive. The shunting locomotive has bidirectional traction / pushing capabilities, and its core function is to operate in a cyclical manner within the line: the loaded car dispatching locomotive sequentially pushes loaded car trains in sections from the handover area to the unloading area for unloading. After unloading, the loaded car dispatching locomotive pushes the trains to the cleaning area for cleaning. After cleaning, the trains are sent to the moving platform, where the empty car trains are moved to the empty car track, where the empty car dispatching locomotive pushes them to the empty car track for assembly and storage. The length of the loaded car dispatching locomotive's operating area is equal to the length of the cleaning area plus the length of the unloading area.

[0061] Example 2:

[0062] This invention provides a reversible bulk cargo unloading method for the aforementioned system, comprising the following steps: S1, vehicles awaiting unloading on the loaded vehicle line enter the unloading area, complete unloading in the unloading area, and send the unloaded materials out; S2, vehicles awaiting unloading after completing unloading in the unloading area enter the cleaning area, complete cleaning in the cleaning area, and send the cleaned materials out; S3, empty vehicles after passing through the cleaning area are sent to the empty vehicle line using a shunting system. In this embodiment, the unloading and cleaning processes are designed to effectively solve the problem of incomplete cleaning of residual materials in traditional processes, reducing cargo loss and avoiding dust pollution during transportation, thus meeting environmental protection transportation requirements. Moreover, the functional zoning is clear; by setting up loaded vehicle lines, unloading areas, cleaning areas, and empty vehicle lines, the loaded vehicle operation flow and the empty vehicle assembly flow are separated, making vehicle flow management clearer and more efficient.

[0063] The following is a detailed implementation of this method:

[0064] Please see Figure 1 , Figure 2 and Figure 3 This embodiment proposes a reversible bulk cargo unloading method, such as... Figure 3 As shown, the process flow is a cyclical process. Its core is that the vehicle is driven by a car-pulling machine through two main functional stations: "unloading" and "cleaning," ultimately completing the unloading and cleaning of the entire train. Specifically:

[0065] The detailed process flow is as follows:

[0066] Step 1: Loaded train delivered

[0067] After the entire train of loaded cars arrives at the loading line and completes the relevant technical operations, the shunting locomotive pushes the entire train of loaded cars into the effective working range of the loaded car jacking machine in the unloading operation area. Then the shunting locomotive leaves the operation area, and subsequent car pulling is carried out by the loaded car jacking machine.

[0068] Once the rear of the entire train of loaded wagons enters the effective working range of the wagon dispatching locomotive, the locomotive is unloaded and leaves the site. The dispatching arm of the wagon dispatching locomotive lowers, the rear coupler is engaged with the wagon, and preparations are made to begin operations.

[0069] The car-shifting machine pushes the loaded car train to the unloading area for alignment.

[0070] Step 2: Unloading in groups

[0071] (1) Shunting: The heavy car dispatching machine starts and moves the heavy car train forward in groups of 4 cars (numbered 1 to 4 in this system).

[0072] (2) Alignment: The group of vehicles is precisely pulled by the heavy vehicle dispatcher to the working area directly below the screw unloader. The four vehicles to be unloaded enter the unloading area, and the wheel clamps clamp the wheels of the first vehicle. After the vehicles come to a stop, the dispatching system sends a "alignment complete" signal to the unloading system.

[0073] (3) Unloading: After receiving the signal, the screw unloader automatically lowers its screw arm into the material inside the car. The high-speed rotating screw blades loosen the material and vertically transport it to the outside of the track. The material falls into the receiving hopper of the enclosed belt conveyor corridor outside the unloader through the discharge port above the unloader. The belt conveyor of the conveying system runs continuously, quickly transporting the material away from the site.

[0074] (4) Most of the material (over 95%) in the four cars was unloaded. The boom was raised to a safe height and sent a "unloading complete, movement permitted" signal to the shunting system.

[0075] (5) Moving the vehicle: The entire group of vehicles after unloading is unhooked and pushed to the cleaning operation area by the heavy vehicle mover.

[0076] (6) Repeat the process, returning to step (1) until all the heavy vehicles are unloaded.

[0077] Step 3: Group cleaning and unloading

[0078] (1) Alignment: The vehicle is precisely pulled to the working area directly below the sweeper and stops. The wheel clamp (II) of the sweeping working area clamps the wheel of vehicle No. 1.

[0079] (2) Cleaning operation begins for vehicles 1 and 2: The sweeper starts, and its cleaning brushes and other devices penetrate deep into the carriage. The equipment thoroughly cleans the residual material on the carriage floor, side panels, and corners. The collected residual material can be fed into the main belt system through a small conveyor to avoid secondary pollution. Completion status: The interior of vehicles 1 and 2 is thoroughly cleaned, meeting the requirements for environmentally friendly transportation. The sweeper resets and sends a "cleaning complete" signal.

[0080] (3) After vehicles 1 and 2 have completed the cleaning operation, they are pulled to the double vehicle transfer platform by the heavy vehicle transfer machine. The platform moves vehicles 1 and 2 to the empty vehicle line to wait. At this time, the heavy vehicle transfer machine pulls vehicles 3 and 4 into the cleaning operation area. The wheel clamp (II) in the cleaning operation area clamps the wheel of vehicle 3.

[0081] (4) Repeat (2) to complete the cleaning operation of vehicles 3 and 4. They are then pulled to the double vehicle transfer platform by the heavy vehicle transfer machine. The platform moves vehicles 3 and 4 to the empty vehicle line to wait for their turn.

[0082] (5) Repeat the cycle and return to step 3 (1) until the entire heavy vehicle has been cleaned.

[0083] Step 4: Unloading, cleaning, and empty vehicle assembly

[0084] (1) Cyclic repetition of loaded car shunting, unloading, cleaning, empty car moving, and empty car shunting: Using the power of two car shifting machines and the moving platform, the linear operation of loaded car shunting -> unloading -> cleaning -> empty car moving -> empty car shunting is completed, achieving the cyclic operation process of the work group.

[0085] (2) Empty car assembly: Empty cars are assembled on the empty car line through the cyclic operation of the empty car dispatching machine.

[0086] Step 5: Picking up and delivering empty vehicles

[0087] (1) Shunting locomotive travel: Shunting locomotive returns to the head of the empty car line.

[0088] (2) Coupling: The shunting locomotive is coupled with the empty cars that have been assembled on the empty car line.

[0089] (3) Picking up and delivering empty cars: The shunting locomotive pulls the entire train of empty cars to the arrival and departure lines.

[0090] (4) The loaded and empty car lines are cleared, and the system starts the next round of unloading operations.

[0091] Thus, this turnaround bulk cargo unloading station and method, compared with traditional unloading, has built a highly automated, continuous, adaptable and environmentally friendly bulk cargo unloading system with relatively low initial investment and construction difficulty, effectively solving the problems of high investment, poor flexibility and difficulty in cleaning up residual materials in traditional unloading processes.

[0092] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A turnaround bulk cargo unloading station, characterized in that: The system includes a track system, an unloading system, a cleaning system, and a shunting system. The track system includes parallel loaded and unloaded tracks. The unloading system includes an unloading area. The cleaning system includes a cleaning area. The unloading area and the cleaning area are arranged sequentially along the extension direction of the loaded track. The shunting system is used to transport trains from the loaded track to the unloaded track.

2. The turnaround bulk cargo unloading station as described in claim 1, characterized in that: The shunting system includes a moving platform, which is located on the side of the cleaning area away from the unloading area. The loaded vehicle line and the empty vehicle line are both set perpendicular to the moving platform.

3. The turnaround bulk cargo unloading station as described in claim 1, characterized in that: The shunting system also includes a loaded car dispatcher and an empty car dispatcher. The loaded car dispatcher is used to send loaded cars to the unloading area, and the empty car dispatcher is used to send empty cars to the empty car line.

4. The turnaround bulk cargo unloading station as described in claim 1, characterized in that: It also includes a conveying system for transporting the unloaded material, the conveying system being located outside the unloading system.

5. The turnaround bulk cargo unloading station as described in claim 4, characterized in that: The material conveying system includes a closed belt conveyor corridor, which is located on the outside of the unloading system.

6. The turnaround bulk cargo unloading station as described in claim 4, characterized in that: The unloading area is equipped with a screw unloader, which spans above the unloading area. The inlet of the screw unloader faces the unloading area, and the outlet of the screw unloader is connected to the conveying system.

7. The turnaround bulk cargo unloading station as described in claim 1, characterized in that: The cleaning area is equipped with a cleaning machine, which is positioned above the cleaning area of ​​the heavy vehicle line, and the unloading port of the cleaning machine is connected to the material conveying system.

8. A method for unloading bulk cargo using a turnaround system, characterized in that, For a turnaround bulk cargo unloading station as described in any one of claims 1-7, the following steps are included: S1, the vehicles waiting to be unloaded on the loaded vehicle line enter the unloading area, complete the unloading in the unloading area, and send out the unloaded materials; S2, the vehicles to be unloaded after being unloaded in the unloading area enter the cleaning area, are cleaned in the cleaning area, and the cleaned materials are sent out; S3, after passing through the cleaning area, the empty cars are sent to the empty car line by the shunting system.

9. The method for unloading bulk cargo based on a screw unloader as described in claim 8, characterized in that: In steps S1 and S2, a conveying system is used to transport the unloaded and cleaned materials away.

10. The method for unloading bulk cargo based on a screw unloader as described in claim 8, characterized in that: A screw unloader is used to unload materials in the unloading area, and a sweeper is used to clean the cleaning area.

Images