Railway bulk cargo grouping, unloading and sweeping integrated system and method

Abstract

The invention relates to a railway bulk cargo grouping, unloading and sweeping integrated system which comprises a rail unit and an unloading unit, the rail unit comprises a loaded vehicle line, the unloading unit comprises an unloading area and a sweeping area, and the unloading area and the sweeping area are integrated on the loaded vehicle line and are sequentially arranged in the extending direction of the loaded vehicle line. The invention further provides a railway bulk cargo grouping, unloading and sweeping integrated method. The unloading area and the sweeping area of the unloading unit are highly integrated on the tail end type loaded vehicle line of the rail unit, the layout is more compact, the sweeping link serves as an indispensable core process to be embedded into the unloading process, the cleanliness of the vehicle is guaranteed from the source, unloading and sweeping are achieved at the same time, and the vehicle is smooth and clean in ground; the vehicle is thoroughly swept in the closed field, so that scattering and dust raising pollution caused by residual materials in the transportation process are fundamentally eradicated; the unloading unit, the conveying unit and the shunting unit are all integrated on one end type loaded vehicle line and one empty vehicle line, so that the functions are complete, and the layout is extremely compact.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway loading and unloading technology, in particular to a railway bulk cargo grouping, unloading and cleaning integrated system and method. BACKGROUND

[0002] 1. Car dumper unloading process

[0003] Specialized large ports and coal unloading yards are equipped with relatively advanced car dumper operation equipment, and are equipped with exclusive heavy load transportation railways and transportation vehicles. The car dumper process is a rapid unloading method that uses the method of tilting the car body to unload the loaded cargo from the top of the car body at one time. It has low requirements for the type of car body and is suitable for all open car types. The car dumper is usually designed in single, double, triple and quadruple tilting techniques according to the number of vehicles that can be tilted at one time. After the car body is properly positioned, the car dumper fixes the vehicle, starts and turns the open car over 180°. Almost no manual cleaning is required in the car cabin, and the unloading speed mainly depends on the efficiency of the car dumper.

[0004] 2. Self-unloading unloading process

[0005] The self-unloading unloading process is combined with an unloading pit, which is a very efficient unloading process, mainly suitable for bottom door hopper car types. When the bottom door hopper car is unloaded, the hopper bottom door is opened, and the material is automatically unloaded by its own gravity. The unloaded material enters the belt conveyor through the cargo chute and is transferred to the stockyard. The flowability of the material determines its unloading speed. The unloading pit unloading method has high requirements for the shape and size of the material. Large material blocks are easy to get stuck and block the grid holes.

[0006] 3. Spiral machine unloading process

[0007] The spiral machine unloading process is usually combined with an unloading pit for operation. The spiral machine replaces manual cleaning and improves work efficiency. The spiral machine is mainly used for side door type flat bottom open cars. The spiral unloading machine moves along the tracks on both sides of the waiting car, inserts a horizontal bidirectional (unidirectional) spiral into the side door open car, and pushes the material to the two sides or a single side of the car body, falling into the unloading pit on both sides of the railway. The unloading machine is divided into bridge type and door type according to the driving track position. The spiral machine unloading process has good adaptability to car types and high requirements for the particle size of the material, and the efficiency is generally low. The conventional spiral unloading machine does not move the vehicle, and the spiral unloading machine runs along the two side tracks equal in length to the train to unload the material into the two side pits equal in length to the train. The investment is very large, the material is dispersedly piled up, the unloading line is severely polluted, and the cargo loss is large.

[0008] At present, with the development of transportation structure optimization and multimodal transport, the existing bulk cargo loading and unloading system generally has the problems of "high investment, high consumption, high pollution and low efficiency", which are specifically reflected in the following aspects:

[0009] (1) Layout is scattered, process is fragmented, and system efficiency is low

[0010] Traditional process regards the links such as "unloading, sweeping and storing" as independent and discrete operation points, rather than a continuous and integrated process. The vehicle needs to be transferred and positioned multiple times between different functional areas, and is heavily dependent on locomotive scheduling, and the invalid operation time accounts for a high proportion. The delay of any one link will cause the interruption of the whole operation chain, and the overall efficiency of the system depends on the slowest link, rather than the speed of the unloading equipment itself.

[0011] (2) Large land occupation, low land utilization

[0012] The traditional process scheme requires a very long railway line and large infrastructure, and the high construction cost (pit, foundation pit, etc.) leads to huge initial investment; in addition, as the land is becoming increasingly scarce, especially in urban areas or old factory renovation projects, it is difficult to find enough linear land, which greatly limits the feasibility of the project and causes a great waste of land resources.

[0013] (3) Serious environmental pollution, huge environmental pressure

[0014] The traditional scheme is almost open and extensive operation, and the traditional process generally lacks efficient and integrated cleaning links, with poor dust control effect and many residual materials. These residual materials will inevitably cause scattering and dust along the line during the transportation of the vehicle after leaving the factory, forming serious non-point source pollution, which is absolutely unacceptable under the current environmental protection policy. SUMMARY

[0015] The purpose of the present application is to provide a railway bulk cargo grouping unloading and cleaning integrated system and method, which can at least solve some of the defects in the prior art.

[0016] To achieve the above purpose, the embodiments of the present application provide the following technical solutions: a railway bulk cargo grouping unloading and cleaning integrated system, comprising a track unit and an unloading unit, the track unit comprises a heavy vehicle line, the unloading unit comprises an unloading area and a cleaning area, the unloading area and the cleaning area are integrated on the heavy vehicle line, and the unloading area and the cleaning area are arranged in sequence along the extension direction of the heavy vehicle line.

[0017] Further, it further comprises a closed factory building, the heavy vehicle line passes through the closed factory building, and the unloading area and the cleaning area are arranged in the closed factory building.

[0018] Further, it further comprises a material conveying unit for conveying the unloaded materials, the material conveying unit is arranged at the heavy vehicle line, and the coverage range of the material conveying unit is consistent with the coverage range of the unloading unit.

[0019] Further, the unloading area is provided with a spiral unloading machine, the spiral unloading machine is arranged above the unloading area of the heavy vehicle line, and the discharge port of the spiral unloading machine is connected with the material conveying unit.

[0020] Further, the cleaning area is provided with a cleaning machine, the cleaning machine is arranged above the cleaning area of the heavy vehicle line, and the discharge port of the cleaning machine is connected with the material conveying unit.

[0021] Further, the material conveying unit comprises a closed belt pipe gallery, and the closed belt pipe gallery is arranged on both sides of the material conveying unit.

[0022] Further, the system further comprises a shunting unit, the track unit further comprises a pulling-out line and an empty vehicle line, and the shunting unit is used for sequentially sending the vehicles to be unloaded on the heavy vehicle line from the receiving area to the unloading area and the cleaning area, and sending the empty vehicles to the pulling-out line and then to the empty vehicle line.

[0023] The embodiment of the present application provides another technical scheme: a railway bulk cargo grouping unloading and cleaning integrated method, which is used for the system and comprises the following steps:

[0024] S1, the vehicles to be unloaded on the heavy vehicle line enter the unloading area, complete unloading in the unloading area, and send the unloaded materials out;

[0025] S2, the vehicles to be unloaded which complete unloading in the unloading area enter the cleaning area, complete cleaning in the cleaning area, and send the cleaned materials out;

[0026] S3, the steps S1 and S2 are repeated until each group of vehicles completes unloading.

[0027] Further, in the steps S1 and S2, the material conveying unit is used to send the unloaded materials and the cleaned materials away.

[0028] Further, after unloading is completed, the whole set of empty vehicles is sent to the pulling-out line and then to the empty vehicle line.

[0029] Compared with the prior art, the present application has the following beneficial effects:

[0030] 1, the unloading area and the cleaning area of the unloading unit are highly integrated on the heavy vehicle line at the end of the track unit, the layout is more compact, the cleaning link is embedded in the unloading process as an indispensable core process, the cleanliness of the vehicle is ensured from the source, and the vehicle is unloaded and cleaned at the same time, and the vehicle and the ground are clean.

[0031] 2, the vehicle completes thorough cleaning in the closed field, fundamentally eliminates the pollution caused by the scattered and flying dust of the residual materials in the transportation process, and meets the current most stringent environmental protection transportation requirements.

[0032] 3. The unloading unit, the feeding unit and the shunting unit are integrated on one dead-end heavy car line and one empty car line, forming an integrated operation freight yard which is complete in function but extremely compact in layout.

[0033] 4. The traditional car train fixing, spiral unloading car machine full-column moving unloading car "serial operation mode of whole column positioning→ whole column unloading→ whole column cleaning" is abandoned, and the "unloading-cleaning-storage" circulating assembly line operation mode taking 2-4 vehicles as one operation unit is created.

[0034] 5. The unloading car machine and the cleaning machine are designed as fixed type, and the car train moving power is completely given to the dedicated heavy car shunting machine, so that the innovative operation mode of "fixed equipment + circulating moving car train" is realized. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A layout schematic diagram of a railway bulk cargo grouping unloading and cleaning integrated system provided for the embodiment of the present application;

[0036] Figure 2 A flowchart of a railway bulk cargo grouping unloading and cleaning integrated method provided for the embodiment of the present application. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] Embodiment one:

[0039] Please refer to Figure 1 and Figure 2 The embodiment of the present application provides a railway bulk cargo grouping unloading and cleaning integrated system, which comprises a track unit and an unloading unit, the track unit comprises a heavy car line, the unloading unit comprises an unloading area and a cleaning area, the unloading area and the cleaning area are integrated on the heavy car line, and the unloading area and the cleaning area are sequentially arranged along the extension direction of the heavy car line. In the embodiment, the unloading area and the cleaning area of the unloading unit are highly integrated on the dead-end heavy car line of the track unit, the layout is more compact, the cleaning link is embedded in the unloading process as an indispensable core process, the cleanliness of the vehicle is ensured from the source, and the unloading and cleaning are realized at the same time.

[0040] Please refer to Figure 1 and Figure 2The system also comprises a closed factory building, the heavy vehicle line passes through the closed factory building, and the unloading area and the cleaning area are arranged in the closed factory building. In addition, the system also comprises a material conveying unit for conveying the unloaded material, the material conveying unit is arranged at the heavy vehicle line, and the coverage range of the material conveying unit is consistent with the coverage range of the unloading unit. The system also comprises a shunting unit, the track unit also comprises a pulling-out line and an empty vehicle line, and the shunting unit is used for sequentially conveying the vehicles to be unloaded on the heavy vehicle line from the receiving area to the unloading area and the cleaning area, and conveying the empty vehicles to the pulling-out line and then to the empty vehicle line. In the embodiment, the vehicles complete thorough cleaning in the closed field, and the pollution caused by residual material during transportation is fundamentally eliminated, so that the most stringent environmental protection transportation requirements are met. Moreover, the unloading unit, the material conveying unit and the shunting unit are all integrated on one end heavy vehicle line and one empty vehicle line, so that a complete and compact integrated operation freight yard is formed. The traditional fixed train, spiral unloading machine and full-column moving unloading "serial operation mode of whole-column alignment, whole-column unloading and whole-column cleaning" is abandoned, and a "unloading-cleaning-storage" circulating assembly line operation mode with 2 to 4 vehicles as one operation unit is created. The unloading machine and the cleaning machine are designed to be fixed, and the train moving power is completely provided by the dedicated heavy vehicle shunting machine, so that the innovative operation mode of "fixed equipment + circulating moving train" is realized. The vehicles to be unloaded are heavy vehicles, and the vehicles after the unloading area and the cleaning area are empty vehicles.

[0041] The following is a specific embodiment of the system:

[0042] Please refer to Figure 1 and Figure 2 The embodiment proposes an integrated system suitable for coal, ore and other bulk cargo railway unloading, cleaning and vehicle turnover. The unloading machine is fixed in a small area of an industrial factory building provided with anti-pollution facilities for unloading and cleaning, the vehicle to be unloaded is moved in the area, the unloading area is reduced, the cargo loss is reduced, and the unloading line pollution is reduced. The planar arrangement is shown in Figure 1 The process system mainly comprises a track unit, an unloading unit, a material conveying unit and a shunting unit. Specifically:

[0043] 1. Track unit:

[0044] The loading and unloading yard and the front arrival and departure yard are arranged in a longitudinal column, the track unit comprises one heavy vehicle line and one empty vehicle line, one pulling-out line is arranged at the end of the heavy vehicle line, the pulling-out line is designed in an end type, and the whole-column parking condition is met. The heavy vehicle line, the empty vehicle line and the pulling-out line are connected through one set of turnout, so as to ensure that the unloaded vehicle column on the heavy vehicle line can enter the pulling-out line through the shunting unit, and the locomotive can pull the unloaded column on the pulling-out line out through the empty vehicle line. One wheel clamping device is arranged outside the unloading area, which is used for preventing the vehicle from slipping during unloading operation.

[0045] Heavy vehicle line: It is the channel of all heavy vehicles entering the system after the operation process. The heavy vehicle line enters the unloading area, sequentially penetrates the unloading area and the cleaning area, and orderly completes the core process of "alignment -> unloading -> cleaning" as a continuous operation assembly line.

[0046] Empty vehicle line: It is the channel of the vehicle that has completed unloading and is transported out of the field. Its core function is to realize "operation separation" and "vehicle flow management", to ensure that the core operation on the heavy vehicle line is not interrupted, and to efficiently and orderly organize the empty vehicle out of the field.

[0047] Pull-out line: It is a line in the system that is used for parking, temporary storage and management of vehicles that have completed unloading. It provides the necessary operation space for the field shunting machine, and pushes the empty vehicle train unloaded by the heavy vehicle line through the unloading area to the pull-out line through the shunting unit, and pulls out the completed whole empty vehicle train through the locomotive. It is the interface between internal circulation and external large circulation.

[0048] 2. Unloading unit:

[0049] The unloading unit mainly consists of two subsystems: unloading system and cleaning system. The unloading area can enter 2~4 heavy vehicles (the number of vehicles per operation cycle can be selected according to the volume) for operation at a time. The unloading area can be installed in a large industrial plant, and pollution prevention facilities can be installed to prevent material from flying and polluting the environment.

[0050] (1) Unloading system

[0051] The unloading system uses a spiral unloading machine, which is located above the unloading area of the heavy vehicle line. Its two sides are connected to the material conveying unit through the unloading port, which is used to unload the arriving heavy vehicle material to the material conveying unit. This system is equipped with one spiral unloading machine for unloading coal.

[0052] (2) Cleaning system

[0053] The cleaning system uses a cleaning machine, which is located above the cleaning area behind the unloading area of the heavy vehicle line, behind the spiral unloading machine. Its unloading port is connected to the material conveying unit, which is used to further clean the residual material on the inner wall and bottom plate of the vehicle after the spiral unloading machine unloads. This system is equipped with one cleaning machine for cleaning operation, and the cleaning machine synchronously cleans the vehicle after unloading with the spiral unloading machine. The cleaning area is equal in length to the unloading area, and its length is equal to the length of the number of vehicles in one cycle of operation, which is generally set to 2~4 vehicles.

[0054] 3. Material conveying unit:

[0055] The material conveying unit is composed of a closed belt conveyor gallery, which is arranged on both sides of the unloading area and the cleaning area and extends in parallel with the heavy vehicle line. The material conveying unit is used for receiving and continuously conveying the materials unloaded by the screw unloading machine and the cleaning machine to the subsequent stockyard. The arrangement range of the material conveying unit corresponds to the unloading unit completely, and the length of the material conveying unit only needs to cover the length of the unloading area and the cleaning area, instead of the length of the whole train.

[0056] 4. The shunting unit:

[0057] One set of shunting unit 1 is arranged, which is mainly composed of one heavy vehicle shunting machine and a running track thereof. The shunting machine has bidirectional traction / pushing capacity and positioning capacity, and the core function thereof is to perform the circulation operation in the line: the heavy vehicle train is pushed from the receiving area to the unloading area to unload the goods, then is pushed to the cleaning area to clean, and finally is pushed to the turnout area to be stored in the lead-out line, and the shunting machine provides the moving power for the unloading vehicle.

[0058] The operation area length of the shunting machine: the length of the receiving area + the length of the unloading area + the length of the cleaning area + the length of the turnout area; the length of the receiving area is generally not less than the length of the vehicle in one circulation operation and is greater than the length of two vehicles; the length of the unloading area and the length of the cleaning area are the length of the vehicle in one circulation operation; and the length of the turnout area is the length from the cleaning area to the connecting rail joint of the turnout.

[0059] Embodiment two:

[0060] The embodiment of the present application provides a railway bulk cargo grouping unloading and cleaning integrated method, which is used for the above-mentioned system and includes the following steps: S1, the unloading vehicle on the heavy vehicle line enters the unloading area, unloads in the unloading area, and sends out the unloaded materials; S2, the unloading vehicle that has completed unloading in the unloading area enters the cleaning area, completes cleaning in the cleaning area, and sends out the cleaned materials; and S3, the S1 step and the S2 step are repeated until each group of vehicles completes unloading. In the embodiment, the unloading area and the cleaning area of the unloading unit are highly integrated on the terminal heavy vehicle line of the track unit, the layout is more compact, the cleaning link is embedded in the unloading process as an indispensable core process, the cleanliness of the vehicle is ensured from the source, and the unloading and cleaning are realized simultaneously.

[0061] The following is a specific implementation of the method:

[0062] Please refer to Figure 1 and Figure 2 , the embodiment proposes an integrated method suitable for the railway arrival unloading, cleaning and vehicle turnover of bulk goods such as coal and ore, as shown in Figure 2 , the process flow is a circulation process, and the core is that the vehicle driven by the shunting machine passes through the "unloading" and "cleaning" two functional stations in turn, and finally completes the unloading and cleaning of the whole train. Specifically:

[0063] The detailed process is as follows:

[0064] First step: heavy train entry

[0065] The heavy train on the arrival-departure track is pushed by the yard shunting locomotive to the receiving area adjacent to the unloading area through the heavy train line of the loading and unloading yard.

[0066] The heavy train enters the receiving area, and the yard shunting locomotive uncouples and exits. At this time, the car dumper arm is lowered, the rear hook is coupled with the vehicle, and the operation is ready to start.

[0067] Second step: group unloading

[0068] (1) Shunting: the car dumper starts, and the heavy train is pulled by the car dumper at a circulation operation vehicle quantity as a group (this project takes 2 cars as an example), and moves forward (the car dumper moves to the direction of the pulling-out track).

[0069] (2) Positioning: the first group of vehicles is accurately pulled by the car dumper to the operation area directly below the spiral unloading machine, and the wheel clamps clamp the first vehicle wheel. After the vehicle is stopped, the shunting unit sends a "positioning completed" signal to the unloading unit.

[0070] (3) Unloading: after receiving the signal, the spiral arm of the spiral unloading machine automatically descends into the vehicle compartment. The high-speed rotating spiral blade loosens the material and transversely transports it to both sides of the track, and the material falls into the receiving hopper of the closed belt pipe gallery on both sides through the unloading port.

[0071] (4) Material conveying: the receiving belt conveyor starts, carries the material on the belt, and runs away from the unloading area at a constant speed. The material is unloaded by the unloader at the head of the belt conveyor and falls into the designated position.

[0072] (5) Most of the material (more than 95%) in the first group of vehicles is unloaded. The spiral arm is lifted to a safe height and sends a "unloading completed, allow movement" signal to the shunting unit.

[0073] Third step: group cleaning and unloading

[0074] (1) Shunting: the wheel clamps are opened, and the car dumper receives the signal and pulls the first group of vehicles to the cleaning operation area.

[0075] (2) Positioning: the first group of vehicles is accurately pulled to the operation area directly below the fixed cleaning machine and stopped, while the second group of vehicles is sent to the unloading area, and the wheel clamps clamp the third vehicle wheel.

[0076] (3) The first group of cleaning and the second group of unloading are carried out at the same time:

[0077] Step 1: Start cleaning operation for the first group of vehicles. The cleaning machine starts, and its cleaning brush and other devices enter the vehicle compartment. The device thoroughly cleans the residual materials on the vehicle floor, side panels, and corners. The collected residual materials are transferred to the main belt system through a small conveying device, avoiding secondary pollution. At the same time, the second group of vehicles starts unloading operation.

[0078] (4) Material conveying: The belts on both sides of the unloading area run synchronously, carrying the materials on the belts, and moving away from the unloading area at a constant speed. The materials are unloaded by the unloader at the head of the belt conveyor and fall into the designated position.

[0079] (5) The first group of vehicles is thoroughly cleaned inside the vehicle compartment, meeting the environmental protection transportation requirements. The cleaning machine returns to its original position, and a "cleaning completed" signal is sent. The second group of vehicles has most of the materials (more than 95%) unloaded, and the spiral arm is lifted to a safe height. A "unloading completed, allowing movement" signal is sent to the shunting unit.

[0080] Step 4: Empty vehicle storage and circulation

[0081] (1) Shunting: The wheel clamps are opened, and the shunting machine receives the signal and pushes the second group of vehicles to the cleaning area. At the same time, the third group of vehicles is sent to the unloading area, and the wheel clamps clamp the wheels of the fifth vehicle. The first group of vehicles is unloaded and pushed to the turnout area simultaneously.

[0082] (2) Circulation: Repeat steps 3 and 4 until all the heavy vehicles in the train are processed. Then, the shunting machine pushes the entire empty train to the lead-out track, ensuring that all empty vehicles pass through the turnout area (the train does not need to be disassembled during the entire operation process, and the shunting machine moves the entire train each time).

[0083] Step 5: Lead-out of the entire empty train

[0084] (1) The shunting locomotive is dispatched again and enters the lead-out track.

[0085] (2) The shunting locomotive connects with the entire empty train parked on the lead-out track.

[0086] (3) The shunting locomotive pulls the empty train out of the empty track and into the departure track.

[0087] (4) The empty track is cleared, and the system starts the next round of unloading operation.

[0088] In summary, the railway bulk cargo grouping and unloading cleaning integrated system and method has the following advantages compared to traditional unloading:

[0089] 1. Significant economic benefits

[0090] Firstly, no large foundation pit is needed, the length of the belt pipe gallery is shortened by about 70%-90%, the length of the unloading machine and the cleaning machine running track is shortened by about 80%-90%, the cost of the heavy vehicle shunting machine is far lower than that of the large-scale locomotive or the dumper system, and the overall initial investment is greatly reduced. Secondly, the equipment structure is simple, the maintenance cost is low, the shortened belt machine brings long-term power saving, the degree of automation is high, and the labor demand is reduced. Finally, the compact through arrangement saves more than 30% of land, and is particularly suitable for old factory transformation or new project with land shortage.

[0091] 2. The environmental benefits are outstanding

[0092] The "unloading + cleaning" process combination and the closed belt machine conveying realize green and clean production without falling, spilling and less dust. Secondly, the clean vehicles meet the national mandatory requirements of "closed and pollution-free" for bulk cargo transportation, avoiding penalties or production stoppage due to environmental problems.

[0093] 3. High safety and reliability

[0094] The equipment and the vehicle are interlocked, and the heavy vehicle line and the empty vehicle line are separated, which fundamentally avoids operation conflicts and safety accidents. The fixed equipment has few fault points and high system redundancy. Even if one device fails, it does not affect other group operations, and the system reliability is much higher than that of the traditional scheme relying on a single large device.

[0095] 4. Good adaptability and flexibility

[0096] It is particularly suitable for small and medium-sized load, multi-variety material unloading occasions, and is a perfect supplement or replacement for the investment-intensive dumper system. The operation unit (2-4 sections in a group) can be flexibly adjusted according to the vehicle model and material characteristics, the process flow has strong expandability, and it is easy to upgrade to a fully automatic unmanned operation system in the future.

[0097] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An integrated system for unloading and cleaning bulk cargo in groups on railways, characterized in that: It includes a track unit and an unloading unit. The track unit includes a loaded vehicle line, and the unloading unit includes an unloading area and a cleaning area. The unloading area and the cleaning area are integrated on the loaded vehicle line and are arranged sequentially along the extension direction of the loaded vehicle line.

2. The integrated railway bulk cargo grouping unloading and cleaning system as described in claim 1, characterized in that: It also includes an enclosed factory building, through which the heavy-duty vehicle line passes, and where the unloading area and the cleaning area are located.

3. The integrated railway bulk cargo grouping unloading and cleaning system as described in claim 1, characterized in that: It also includes a conveying unit for transporting the unloaded material, the conveying unit being located at the loaded vehicle line and the coverage area of ​​the conveying unit being the same as the coverage area of ​​the unloading unit.

4. The integrated railway bulk cargo grouping unloading and cleaning system as described in claim 3, characterized in that: The unloading area is equipped with a screw unloader, which spans above the unloading area of ​​the heavy vehicle line, and the unloading ports on both sides of the screw unloader are connected to the material conveying unit.

5. The integrated railway bulk cargo grouping unloading and cleaning system as described in claim 3, 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 unit.

6. The integrated railway bulk cargo grouping unloading and cleaning system as described in claim 3, characterized in that: The material conveying unit includes a closed belt conveyor corridor, which is arranged on both sides of the unloading unit.

7. The integrated railway bulk cargo grouping unloading and cleaning system as described in claim 1, characterized in that: It also includes a shunting unit, and the track unit includes a lead-out line and an empty car line. The shunting unit is used to send the cars to be unloaded on the loaded car line from the receiving area to the unloading area and the cleaning area in sequence, and to send the empty cars to the lead-out line, and then from the lead-out line to the empty car line.

8. A method for integrated unloading and cleaning of bulk cargo on railways, characterized in that, The system used in any one of claims 1-7 includes the following steps: 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. Repeat steps S1 and S2 until each group of vehicles has finished unloading.

9. The integrated method for unloading and cleaning bulk cargo in groups as described in claim 8, characterized in that: In steps S1 and S2, a conveying unit is used to transport the unloaded and cleaned materials away.

10. The integrated method for unloading and cleaning bulk cargo in groups as described in claim 8, characterized in that: After unloading, the entire empty train is sent to the lead-out line and then from the lead-out line to the empty car line.

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