Storage and transportation method for covering film of open-air coal yard

Abstract

The invention discloses a storage and transportation method for an open-air coal yard covering film, and belongs to the technical field of storage and transportation of open-air coal yard covering films. The storage and transportation method comprises the steps that the covering film used for preventing dust raising and water pollution is obtained; the covering film is wound and stored in a compression storage mode; a movable chassis is adopted to bear and store a winding drum device of the covering film; the winding drum device is transported to a target area of an open-air coal yard through the movable chassis; the winding drum device is used for winding and unwinding the covering film so as to cover or wind up a coal pile of the open-air coal yard; according to the invention, the automation level and the environmental protection effect of the film covering operation of the open-air coal yard are obviously improved, and an efficient and reliable technical solution is provided for dust raising and water pollution prevention and control in the coal storage and transportation process.

Description

Technical Field

[0001] The present invention belongs to the technical field of storage and transportation of film covering in open-air coal yards, and in particular relates to a storage and transportation method for film covering in open-air coal yards. Background Art

[0002] Open-pit coal yard film covering systems for dust and pollution prevention face a complex technical challenge: how to achieve efficient, precise, and automated film covering under diverse terrain conditions. This challenge involves multiple interrelated technical difficulties. First, the coal yard's terrain is complex and varied, and the film covering system must adapt to various topographical features while ensuring uniform and complete coverage. Second, the film's storage, transportation, and deployment present conflicts between tension control, positioning accuracy, and operational efficiency. Furthermore, the characteristics of the film material impose specific requirements on storage methods and deployment processes, making optimizing the storage layout within limited space while ensuring film quality a key challenge. Furthermore, the system must possess environmental awareness and autonomous decision-making capabilities to cope with complex and changing operating environments. These intertwined technical challenges create a systemic challenge: how to improve the system's automation, adaptability, and operational efficiency while ensuring film quality and environmental performance. Solving this problem not only impacts the success of a single film covering operation but also the long-term dust control and environmental protection of the entire open-pit coal yard. Therefore, developing an intelligent film covering system that comprehensively addresses these technical conflicts has become a major technical challenge in the field of dust and pollution prevention in open-pit coal yards. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a storage and transportation method for film covering in open-air coal yards in response to the shortcomings of the background technology.

[0004] The present invention adopts the following technical solutions to solve the above technical problems: A method for storing and transporting film covering in an open-air coal yard specifically comprises the following steps: Step 1: obtaining a film for preventing dust and water pollution; Step 2, winding and storing the coating film by compression storage; Step 3, using a movable chassis to carry and store the roll device for the coated film; Step 4: transporting the reel device to a target area of ​​an open-air coal yard via the movable chassis; Step 5: retracting and extending the covering film by the reel device to cover or retract the coal pile in the open-air coal yard.

[0005] As a further preferred embodiment of the present invention, a method for storing and transporting films for open-air coal yards is provided. In step 2, the films are wound and stored by means of a compression storage method, including: compressing the films by a spiral winding method; limiting the winding range of the films by means of a preset interval structure; storing a plurality of the films in different intervals of the winding device respectively; adjusting the order and position of the winding storage by means of a control system; determining the quantity of the films to be wound and stored each time according to the covering requirements of the open-air coal yard; if the films reach a preset storage capacity, stopping the winding operation and recording the storage status; fixing the films by means of a driving system of the winding device to prevent the films from being loosely wound; obtaining the dimensional data of each film after winding; adjusting the parameters of the subsequent winding according to the dimensional data; and generating a storage log by means of the control system for reference in subsequent winding and releasing operations.

[0006] As a further preferred embodiment of the present invention's method for storing and transporting film in an open-air coal yard, in step 3, a movable chassis is used to carry a reel device for storing the film, including: carrying the reel device via a crawler chassis; using a power drive system to provide the crawler chassis with mobility; adjusting the moving path of the crawler chassis according to the terrain characteristics of the open-air coal yard; controlling the moving speed of the crawler chassis via the power drive system; if the crawler chassis encounters an obstacle, adjusting the moving direction via a preset obstacle avoidance strategy; adjusting the balance parameters of the crawler chassis based on the weight distribution of the reel device; obtaining current position information via the positioning system of the crawler chassis; determining a moving route based on the distance between the current position information and the target area; performing a moving operation via the power drive system; and obtaining terrain feedback data during the movement for subsequent path optimization.

[0007] As a further preferred embodiment of the present invention, a storage and transportation method for covering an open-air coal yard is provided. In step 4, the drum device is transported to a target area of ​​the open-air coal yard via the movable chassis, including: obtaining coordinate data of the target area of ​​the open-air coal yard; planning a transportation path via the navigation system of the movable chassis; driving the movable chassis to move according to the transportation path; performing path correction via the navigation system if the movable chassis deviates from the transportation path; obtaining surrounding environment information via the sensor system of the movable chassis; adjusting the moving speed and direction according to the environment information; determining the parking position of the movable chassis based on the terrain conditions of the target area; confirming whether the movable chassis has reached the target area via the navigation system; stopping movement and locking the movable chassis if it has reached the target area; and obtaining coverage requirement data of the target area for subsequent film retraction and deployment operations.

[0008] As a further preferred embodiment of the present invention, a method for storing and transporting films for open-air coal yards is provided. In step 5, the film is retracted and extended by the drum device, including: obtaining the covering requirement information of the open-air coal yard; determining the quantity and position of the films to be retracted and extended based on the covering requirement information; selecting the corresponding storage interval through the control system of the drum device; starting the retraction and extension function of the drum device by a drive system; if it is a covering operation, the film is unfolded to the surface of the coal pile through the drum device; if it is a retraction operation, the film is reeled back to the corresponding storage interval through the drum device; limiting the movement trajectory of the film during the retraction and extension process through a guide system; adjusting the operating parameters of the drive system according to the unfolding or reeling state of the film; recording the completion status of each retraction and extension operation through the control system; and obtaining feedback data on the retraction and extension effect of the film for optimizing subsequent operations.

[0009] As a further preferred embodiment of the present invention, a method for storing and transporting films in open-air coal yards is provided. In step 5, the film is retracted and extended by the reel device, including: obtaining tension data of the film by the sensing system of the reel device; adjusting the retraction and extension speed of the reel device according to the tension data; if the tension data exceeds a preset threshold, pausing the retraction and extension operation and performing parameter correction by the control system; obtaining coverage uniformity data of the coal pile surface for the unfolding area of ​​the film; adjusting the unfolding angle of the film according to the uniformity data; ensuring the flatness of the film during the retraction and extension process by the guide system of the reel device; if the film deviates, performing trajectory correction by the guide system; recording the number of retraction and extension and usage status of the film by the control system; judging whether the film needs maintenance according to the usage status; and obtaining environmental condition data of the retraction and extension operation for optimization and adjustment of subsequent operations.

[0010] As a further preferred embodiment of the present invention's method for storing and transporting films in open-air coal yards, in step 5, the film is wound and stored by compression storage, including: performing initial processing on the film by preset compression parameters; adjusting the compression parameters according to the material properties of the film; if the material of the film is a highly elastic material, reducing the compression force by the winding device; if the material of the film is a low-elastic material, increasing the compression force by the winding device; obtaining deformation data of the film during the compression process by a monitoring system of the winding device; adjusting the winding speed of the winding device according to the deformation data; obtaining capacity utilization data for the storage interval of the film; optimizing the storage layout of the film according to the capacity utilization data; recording the compressed storage state of the film by the control system; obtaining stability data of the film after storage for reference in subsequent retraction and release operations.

[0011] The technical solution provided by the embodiment of the present invention may have the following beneficial effects: The present invention discloses a film taking-up and releasing system for preventing dust and pollution in an open-air coal yard. The film is wound and stored in a compressed storage manner, and a movable crawler chassis is used to carry a winding drum device to achieve flexible transportation and precise positioning of the film. The present invention automatically plans the transportation route and performs environmental perception according to the terrain characteristics and covering requirements of the coal yard, to ensure that the film reaches the target area smoothly. During the taking-up and releasing operation, the present invention adjusts the winding parameters through a control system, monitors the film tension and covering uniformity, and achieves efficient unfolding and recovery of the film. At the same time, the present invention can also dynamically adjust the compression parameters according to the characteristics of the film material, optimize the storage layout, and improve space utilization. Through these innovative designs, the present invention significantly improves the automation level and environmental protection effect of film covering operations in open-air coal yards, and provides an efficient and reliable technical solution for the prevention and control of dust and water pollution during coal storage and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a flow chart of a storage and transportation method for covering an open-air coal yard. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The present invention is described in detail below based on the drawings and preferred embodiments. The purpose and effect of the present invention will become more clear. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0014] like Figure 1 As shown, the storage and transportation method for film covering in an open-air coal yard according to this embodiment may specifically include: S101. Obtain a film for preventing dust and water pollution; and roll up and store the film in a compressed storage manner.

[0015] Get a coating for protection against dust and water contamination.

[0016] For example, in open-pit coal yards, the choice of film is crucial. High-strength, weather-resistant polyethylene is typically used, effectively blocking wind, sand, and rain erosion. The film thickness is typically controlled between 0.2 and 0.5 mm to ensure a balance between toughness and lightness.

[0017] Specifically, the film's tensile strength and waterproof rating are prioritized during procurement to ensure it resists damage in harsh environments. Furthermore, the film is chosen to be dark in color, such as dark green or black, to absorb heat, accelerate surface moisture evaporation, and reduce the risk of water accumulation. This approach protects the coal yard from dust and water pollution, extends the film's lifespan, and reduces replacement costs. The film is stored in a compressed, coiled form.

[0018] For example, when storing the film, the traditional flat-rolling method often takes up a lot of space, while compressed storage can significantly improve space utilization.

[0019] In one possible implementation, a dedicated compression device may be used to apply uniform pressure to the coating during the winding process, thereby reducing its volume to approximately 1 / 3 of its original volume.

[0020] Specifically, the compressed film will be stored in a cylindrical form with a diameter controlled between 0.5 and 1 meter to facilitate mechanized handling and stacking.

[0021] It's important to note that compressed storage not only saves storage space but also reduces the risk of wear and tear caused by loose film during storage. Furthermore, this method facilitates transportation. For example, on long-distance transport, compressed film can be loaded in larger quantities, reducing logistics costs. This method makes film management in open-pit coal yards more efficient, significantly improving operational convenience and facilitating rapid subsequent laying.

[0022] S102: Using a movable chassis to carry and store the film-coated roll device; and transporting the roll device to a target area in an open-air coal yard via the movable chassis.

[0023] Regarding the topic of "using a movable chassis to carry and store the film roll device," we first analyze the principle. The core design of the movable chassis is to solve the problem that traditional fixed roll devices cannot flexibly adapt to large-scale operations in open-pit coal yards. By combining the roll device with the chassis, the equipment can be freely moved between different areas, greatly improving operational convenience. For example.

[0024] In one possible implementation, the chassis may adopt a crawler structure, which can stably travel on complex terrain of an open-air coal yard, such as muddy or uneven ground, to ensure the stability of the reel device during transportation and operation.

[0025] Specifically, the crawler chassis can be designed to support a reel weighing up to 10 tons, and is equipped with a low-speed, high-torque drive system to accommodate heavy-load mobility. This approach not only protects the film in the reel from environmental damage but also reduces manual intervention and operating costs. Regarding the topic of "transporting the reel to the target area in the open-pit coal yard via the movable chassis," the focus is on the implementation and operational details of the transportation process. For example,

[0026] In one embodiment, the transportation process can be planned based on the actual layout of the open-air coal yard. Assuming that the coal yard area is 50,000 square meters and the target areas are distributed in different corners, the chassis can accurately deliver the reel device to the designated location through a preset path or remote control.

[0027] It's important to note that the chassis can be integrated with a positioning system to ensure it doesn't stray from the target area during transport. It's also equipped with obstacle avoidance sensors to address temporary obstacles, such as piles of coal or equipment. This design significantly improves transport efficiency and avoids time lost due to human error. Furthermore, after transporting to the target area, the chassis can be adjusted to align the reel with the direction of film laying, facilitating subsequent operations. This approach ensures accurate film laying while adapting to varying terrain and environmental conditions, demonstrating exceptional flexibility and practicality.

[0028] S103 , retracting and extending the covering film through the reel device to cover or retract the coal pile in the open-air coal yard.

[0029] Regarding the topic of using a reel to roll film to cover or hide coal piles in open-pit coal yards, let's first consider the principle behind film covering coal piles. As a protective material, film primarily serves to prevent dust and damage from wind and rain. The reel rotates the reel to roll the film over the coal pile or rewind it to reveal the coal pile, providing simple and efficient operation.

[0030] For example, in an open-pit coal yard, where the coal pile is 5 meters high and 20 meters wide, a reel unit mounted on a crawler chassis can cover a 22-meter width and up to 100 meters in length, ensuring complete coverage. Electric drive unwinds the reel at a speed of 2 meters per minute, completing the covering in just 50 minutes. This saves significant time and manpower compared to manual operation.

[0031] Specifically, the reel device's retraction and deployment operations can be divided into two steps: unwinding and rewinding. During unwinding, the motor drives the reel to rotate, gradually releasing the film from the reel while the crawler chassis moves along the edge of the coal pile to ensure smooth coverage.

[0032] For example, the crawler chassis moves at a speed of 1 km / h, matching the roll unwinding speed to achieve uniform coverage during movement, preventing wrinkles or shifting of the film. During rewinding, the motor rotates in the opposite direction, rewinding the film back onto the roll while the crawler chassis returns along its original path to complete the rewinding operation. This approach not only improves efficiency but also reduces the risk of film damage.

[0033] In one embodiment, the design of the reel device must take into account environmental factors in the coal yard, such as wind. In areas with high wind speeds, the film may be blown up during unwinding, resulting in uneven coverage. To address this, counterweights can be placed around the edges of the film, with a 0.5 kg counterweight every 1 meter to ensure that the film adheres to the surface of the coal pile. This design effectively improves coverage stability while ensuring that the counterweights do not affect reel operation during rewinding, ensuring both practicality and convenience.

[0034] For example, the roll unit can flexibly adjust the film size and roll length for coal piles of varying sizes. For small coal piles, the film width can be set to 10 meters and the roll length to 50 meters, while for large coal piles, this can be increased to 25 meters wide and 200 meters long. Through its modular design, the roll unit can quickly adapt to different scenarios, providing more precise filming operations and reducing resource waste.

[0035] Specifically, the technical effect brought about by the use of a drum device for reeling and releasing operations is significant. It not only realizes the mechanization of manual labor and reduces labor intensity, but also improves the efficiency of coal pile protection.

[0036] For example, traditional manual covering might take 10 people three hours, while the drum-type device only requires one person in one hour, increasing efficiency by nearly 10 times while also avoiding the safety hazards associated with manual operation, such as the risk of working at height. This approach provides reliable protection for open-pit coal yard management.

[0037] S104. The winding and storage of the film by compression storage includes: compressing the film by spiral winding; limiting the winding range of the film by a preset interval structure; storing multiple sheets of the film in different intervals of the winding device; adjusting the order and position of the winding storage by a control system; determining the amount of the film to be wound and stored each time according to the covering requirements of the open-air coal yard; if the film reaches a preset storage capacity, stopping the winding operation and recording the storage status; fixing the film by the drive system of the winding device to prevent it from being loose; obtaining the dimensional data of each sheet of the film after winding; adjusting the parameters of subsequent winding according to the dimensional data; and generating a storage log by the control system for reference in subsequent winding and releasing operations.

[0038] The film is compressed by spiral winding.

[0039] For example, the film is 16 meters wide and 60 meters long, made of high-strength polyethylene with a certain degree of compressibility. During spiral winding, the reel rotates at a constant speed of 500 revolutions per minute, using a reel with an inner diameter of 500 mm as the core to gradually compress the film to a thickness of approximately 5 mm per layer. Compared to traditional flat winding, spiral winding can compress the film volume to 1 / 3 of its original volume, significantly reducing storage space. The advantage of this method is that the compressed film fits tightly to the reel, reducing air gaps, improving storage efficiency, and facilitating subsequent deployment to cover open-air coal yards. The winding range of the film is limited by a preset spacing structure.

[0040] Specifically, the roll unit is designed with 330mm wide slots, each of which can accommodate a sheet of film. The spacing structure is made of high-strength aluminum alloy to ensure that it does not deform during high-speed rotation.

[0041] For example, a roll unit has 10 slots, each of which independently reels a sheet of film, preventing multiple sheets from squeezing each other and causing wrinkles or damage. The benefit of this design is that the slots not only limit the winding range but also ensure that the film remains flat during the winding process, facilitating precise unwinding. Multiple sheets of film are stored in different compartments of the roll unit.

[0042] In one embodiment, to cover an open-air coal yard daily, assuming a 5,000 square meter coal pile needs to be covered, and a single sheet of film has an area of ​​960 square meters, five sheets of film are required, each stored in five separate slots. The films are sequentially positioned in their designated slots via an automated guidance system, ensuring no overlap during storage. The advantage of this approach is that each sheet of film is stored independently, making it easy to access on demand, reducing operation time and improving covering efficiency. The order and location of the windings and storage is adjusted by a control system.

[0043] For example, the control system uses an embedded PLC controller, with the film winding sequence pre-set to slots numbered 1 to 10 from the inside out. The operator inputs the coordinates of the coal yard's coverage area via the touchscreen, and the system automatically matches the nearest film slot and adjusts the winding sequence. This intelligent adjustment optimizes the film application sequence based on actual coverage requirements, reducing wasted movement of the winding drum and extending equipment life. The amount of film stored in each winding session is determined based on the coverage requirements of the open-pit coal yard.

[0044] In one possible implementation, a coal pile area of ​​10,000 square meters requires 10 sheets of film per covering. The control system dynamically calculates the required amount of film based on sensor feedback regarding the shape and area of ​​the coal pile, prioritizing storage in slots close to the covering area. This approach offers the advantage of precisely matching covering requirements, avoiding film waste, and increasing the flexibility of covering operations. If the film reaches the preset storage capacity, the winding operation stops and the storage status is recorded.

[0045] For example, when the outer diameter of the reel reaches 2000 mm, a sensor detects that the storage capacity is full. The control system automatically stops the winding motor and records the current slot number, film quantity, and winding time in the storage log. This record facilitates subsequent inspections of film usage, ensuring that each covering operation can be traced back to the storage status, improving operational reliability. The reel drive system secures the film to prevent it from loosening.

[0046] Specifically, the drive system is equipped with a tension control module that applies a constant tension of approximately 500 Newtons at the end of winding to ensure that the film fits tightly to the reel.

[0047] For example, after the film is wound, the system automatically activates the clamping device to secure the edge of the film within the interval slots. This method of securing effectively prevents the film from loosening during transportation or storage, ensuring it lies flat and wrinkle-free when unwound. The system also captures the dimensional data of each sheet of film after winding.

[0048] In one embodiment, a laser distance measuring sensor is installed on the winding device to measure the diameter and thickness of each sheet of the film in real time after winding.

[0049] For example, a sheet of film, after winding, has a diameter of 1800 mm and a thickness compressed to 4 mm. This data is wirelessly transmitted to the control system. The benefit of this data collection is that it provides precise parameters for subsequent winding, preventing winding failures caused by film dimensional deviations. The subsequent winding parameters are adjusted based on the dimensional data.

[0050] For example, if the diameter of the previous film exceeds expectations by 5 mm after winding, the control system automatically reduces the winding speed of the next film to 450 rpm and increases the tension to 550 Newtons to ensure a tight winding. The benefit of this dynamic adjustment is that it optimizes the winding process based on actual data, improving the stability and consistency of film storage. The control system also generates a storage log for reference during subsequent winding and unwinding operations.

[0051] Specifically, the storage log records the slot number, winding time, size data and tension parameters of each film.

[0052] For example, the log shows that the film for slot 1 was wound on June 23, 2025, with a diameter of 1,800 mm and in good storage condition. The benefit of this log is that it provides a reference for subsequent film unwinding operations, ensuring efficient and accurate covering operations.

[0053] S105. The method of using a movable chassis to carry and store the roll device for coating includes: carrying the roll device through a crawler chassis; using a power drive system to provide the crawler chassis with mobility; adjusting the moving path of the crawler chassis according to the terrain characteristics of the open-air coal yard; controlling the moving speed of the crawler chassis through the power drive system; if the crawler chassis encounters an obstacle, adjusting the moving direction through a preset obstacle avoidance strategy; adjusting the balance parameters of the crawler chassis according to the weight distribution of the roll device; obtaining current position information through the positioning system of the crawler chassis; determining a moving route according to the distance between the current position information and the target area; executing the moving operation through the power drive system; obtaining terrain feedback data during the movement for subsequent path optimization.

[0054] The reel device is carried by a crawler chassis.

[0055] For example, in an open-air coal yard, a crawler chassis can be designed as a 4-meter-long, 2-meter-wide structure to carry a 1.5-meter-diameter, approximately 2-ton film roll. This design adapts to the uneven terrain within the coal yard and ensures the roll's stability during movement. The crawler chassis' large contact area effectively distributes weight, reducing pressure on the ground and protecting the coal yard floor from damage. A power drive system provides the crawler chassis with mobility.

[0056] For example, the power system can utilize an electric drive module with an output of 10 kilowatts, enabling the chassis to move at a speed of 2 kilometers per hour. This speed ensures both operational efficiency and safety. The power system's role is to provide continuous driving force, enabling flexible movement in complex terrain and minimizing manual intervention. The movement path can be adjusted based on the topographical characteristics of the open-pit coal yard.

[0057] Specifically, the pre-installed terrain scanning module identifies features such as slopes and potholes within the coal yard and plans an optimal route with a slope of less than 10 degrees. This prevents equipment from tipping over or getting stuck due to terrain issues, improving smoother and safer movement. The power drive system controls movement speed.

[0058] For example, the speed can be set to 2 kilometers per hour on flat areas, but reduced to 1 kilometer per hour on steeper slopes to ensure stability. This speed control strategy dynamically adjusts to actual needs, ensuring operational safety. If an obstacle is encountered, the vehicle adjusts direction using pre-set obstacle avoidance strategies.

[0059] For example, if an obstacle over 0.5 meters in height appears in front of the device, the built-in sensor triggers obstacle avoidance mode, automatically adjusting the direction to avoid it. This design reduces the risk of equipment damage while improving operational continuity. Balancing parameters are adjusted based on the weight distribution of the reel unit.

[0060] Specifically, if the weight of the reel unit leans to one side, the chassis can control the center of gravity offset within 0.1 meters through the hydraulic adjustment system, ensuring that the equipment does not tilt during movement and ensuring safety. The current position information is obtained through the positioning system.

[0061] For example, a GPS module can be used to obtain the coordinates of the equipment in the coal yard in real time, with an accuracy of less than 0.5 meters, providing accurate data support for subsequent path planning. The movement route is determined based on the current location information and the distance to the target area.

[0062] For example, if the current location is 100 meters away from the target area, the system will plan the shortest path based on terrain data, avoiding obstacles and improving movement efficiency. Movement is performed through the power drive system.

[0063] Specifically, the system automatically drives the chassis according to the planned path, while simultaneously monitoring power consumption in real time to ensure mission completion. Terrain feedback data is obtained during movement for path optimization.

[0064] For example, the equipment records information such as slope and ground hardness and uploads it to the control center for use in subsequent tasks to optimize path selection and reduce energy consumption and time costs.

[0065] S106. The method of transporting the reel device to the target area of ​​the open-air coal yard by the movable chassis includes: obtaining coordinate data of the target area of ​​the open-air coal yard; planning a transportation path by the navigation system of the movable chassis; driving the movable chassis to move according to the transportation path; if the movable chassis deviates from the transportation path, performing path correction by the navigation system; obtaining surrounding environment information by the sensor system of the movable chassis; adjusting the moving speed and direction according to the environmental information; determining the parking position of the movable chassis according to the terrain conditions of the target area; confirming whether the movable chassis has reached the target area by the navigation system; if it has reached the target area, stopping the movement and locking the movable chassis; obtaining coverage requirement data of the target area for subsequent film retraction and extension operations.

[0066] Get the coordinate data of the target area of ​​the open-pit coal yard.

[0067] In one possible implementation, a satellite positioning system combined with a digital map of an open-pit coal yard can be used to obtain the specific longitude and latitude data for the target area. Assuming the total area of ​​the coal yard is 100,000 square meters, the target area is located in the northeast corner of the yard, with coordinate data accurate to the meter level, such as 120.5 degrees east longitude and 35.2 degrees north latitude. Using a pre-loaded coal yard map database, the system can quickly identify the specific location of the target area, providing basic data for subsequent route planning. This approach ensures transportation accuracy, avoids repeated adjustments due to positioning errors, and improves operational efficiency. Transport routes are planned using the navigation system of the movable chassis.

[0068] For example, the navigation system can calculate the shortest and safest route based on acquired coordinate data, combined with road conditions and obstacle distribution within the coal yard. Assuming the coal yard has fixed storage areas and temporary access roads, the system prioritizes flat main roads, avoiding terrain with large elevation differences. The total route length is approximately 800 meters. When planning the route, the system also considers real-time weather factors, such as avoiding areas with accumulated water, to ensure safe transportation. This design reduces unnecessary detours, saving time and energy. The movable chassis is driven according to the transportation route.

[0069] Specifically, the crawler chassis, equipped with a hydraulic drive system, moves at an average speed of 2 meters per second along the planned path from the starting point to the target area. During this process, the system monitors the chassis's operating status in real time to ensure stability and directional accuracy. This ensures smooth movement in complex terrain and reduces mechanical wear. If the movable chassis deviates from the transport path, the navigation system will initiate a correction.

[0070] For example, if the chassis deviates by approximately 0.5 meters due to uneven ground or a temporary obstacle, the navigation system detects the deviation using its built-in gyroscope and sensors, automatically adjusting the track direction to return to the planned path. This correction process occurs in real time, ensuring that deviations are kept to a minimum. This approach effectively prevents equipment from getting lost and improves transport reliability. The movable chassis' sensor system acquires information about the surrounding environment.

[0071] For example, the chassis is equipped with ultrasonic sensors and cameras, which can detect obstacles within a 5-meter radius in real time, such as temporarily stacked materials or human activity. The system dynamically generates an avoidance strategy based on the size and distance of the obstacle to ensure safe transportation. This design significantly reduces the risk of collisions, protecting equipment and personnel. The system also adjusts movement speed and direction based on environmental information.

[0072] Specifically, if sensors detect an obstacle ahead, the system automatically reduces its speed from 2 m / s to 0.5 m / s and adjusts its direction to avoid it, keeping its radius within 2 meters. After these adjustments, the system reassesses its path to ensure it stays on target. This flexibility ensures the device's adaptability in complex environments and improves operational efficiency. The movable chassis's docking position is determined based on the terrain conditions of the target area.

[0073] For example, near the target area, the system will select a flat area with a slope of less than 5 degrees as a docking point based on the terrain flatness and load-bearing capacity, ensuring stable parking for the chassis. This selection facilitates the smooth progress of subsequent laminating operations, avoiding equipment tilting or operational difficulties caused by terrain problems. The navigation system confirms whether the movable chassis has reached the target area.

[0074] For example, when the chassis enters the target area's coordinates within a 0.2-meter tolerance, the navigation system sends an arrival signal, confirming its accurate position. This precise confirmation ensures the equipment is optimally positioned for subsequent operations. Upon reaching the target area, movement stops and the movable chassis is locked.

[0075] Specifically, the system disconnects the hydraulic drive and simultaneously activates a mechanical locking mechanism to prevent the chassis from sliding due to external forces once docked. Once locked, the machine enters standby mode, ready for laminating operations. This design effectively prevents accidental movement and enhances safety. Data on the target area's coverage requirements is collected for subsequent laminating operations.

[0076] For example, the system uses a pre-set operation plan to determine that the target area is 5,000 square meters, the required film length is 100 meters, and the width is 50 meters. It then adjusts the deployment and retraction strategy based on wind speed and coal pile height. This data helps precisely control the deployment and retraction of the film, ensuring effective coverage and minimizing resource waste.

[0077] S107. The operation of retracting and extending the covering film by the drum device includes: obtaining the covering demand information of the open-air coal yard; determining the quantity and position of the covering film to be retracted and extended according to the covering demand information; selecting the corresponding storage interval through the control system of the drum device; using the drive system to start the retraction and extension function of the drum device; if it is a covering operation, the covering film is unfolded to the surface of the coal pile by the drum device; if it is a retraction operation, the covering film is reeled back to the corresponding storage interval by the drum device; limiting the movement trajectory of the covering film during the retraction and extension process by the guide system; adjusting the operating parameters of the drive system according to the unfolding or reeling state of the covering film; recording the completion status of each retraction and extension operation by the control system; and obtaining feedback data on the retraction and extension effect of the covering film for optimizing subsequent operations.

[0078] Obtain coverage requirements information for open-pit coal yards.

[0079] For example, in actual operation, environmental monitoring equipment mounted on a crawler platform can collect real-time meteorological data and coal pile status information at the coal yard, such as wind speed, rainfall forecast, and the height and area of ​​the coal pile. This data can be wirelessly transmitted to the control system, generating coverage requirements and determining whether to deploy or retract the film. This allows for dynamic response based on actual conditions, preventing damage to the coal pile caused by sudden weather changes and reducing unnecessary operational costs. Based on the coverage requirements, the amount and location of the film to be deployed and retracted are determined.

[0080] For example, if a 100-meter-long, 50-meter-wide open-pit coal yard detects impending strong winds, the system, based on the coal pile distribution map, determines that the first 50 meters of the pile need to be covered. It then calculates the required number of sheets, each 25 meters wide. This precise positioning and quantity determination effectively avoids resource waste and ensures efficient and targeted covering operations. The corresponding storage interval is selected by the reel unit's control system.

[0081] For example, if the roll unit is designed with 10 storage compartments, the control system will automatically select the two films stored in compartments 3 and 4 for unwinding based on the film specifications and usage history. This automatic selection mechanism reduces manual intervention, improves operational efficiency, and ensures orderly film storage, facilitating subsequent management. The drive system activates the roll unit's retraction and unwinding functions.

[0082] For example, during covering operations, the drive system activates the drum rotation at a constant speed, slowly pulling the film out of the storage compartment. This ensures a smooth unrolling process and prevents damage to the film due to uneven tension. This design improves operational stability and extends the life of the film and equipment. During covering operations, the film is unrolled onto the surface of the coal pile using the drum mechanism.

[0083] For example, during unwinding, the reel unit spreads the film to the designated area at a speed of 2 meters per minute. Auxiliary rollers simultaneously adjust the film's angle to ensure it lies evenly against the coal pile surface. This effectively prevents wind-induced deviation of the film, improving coverage efficiency. To fold it back, the reel unit winds the film back into its designated storage compartment.

[0084] For example, when the weather improves, the system will start the reel to rotate in the opposite direction, rewinding the film at a speed of 1.5 meters per minute. This ensures a tight reel and prevents the film from becoming tangled or damaged during storage. This method ensures the film's reusability and reduces maintenance costs. A guide system limits the film's movement during retraction and release.

[0085] For example, the guide system can be designed as a frame structure with guide grooves on both sides. The film is constrained within the grooves during retraction and deployment, preventing it from shifting due to wind or improper operation. This design improves operational accuracy and ensures that the film always moves along the intended path. The drive system's operating parameters are adjusted based on the film's unfolding or winding state.

[0086] For example, when the film is unrolled near the edge of the coal pile, the system automatically reduces the winder speed to 1 meter per minute to prevent excessive stretching. During the initial winding phase, the speed is increased to improve efficiency. This dynamic adjustment optimizes operations and reduces equipment wear. The control system records the completion of each retraction and unwinding operation.

[0087] For example, the system automatically records the time, film number, coverage area, and duration of each operation, generating a log that is stored in the cloud for subsequent analysis. This provides data support for equipment maintenance and operational optimization, improving management efficiency. Feedback on the film retraction and extension performance is collected and used to optimize subsequent operations.

[0088] For example, after an operation is completed, a camera mounted on the crawler platform collects data on the flatness and completeness of the film. If uneven coverage is detected, the system adjusts the speed or angle of deployment for the next operation. This feedback mechanism enables continuous improvement of operational results and ensures coverage quality.

[0089] S108. The film retraction and extension operation by the drum device includes: obtaining the tension data of the film through the sensing system of the drum device; adjusting the retraction and extension speed of the drum device according to the tension data; if the tension data exceeds a preset threshold, pausing the retraction and extension operation and performing parameter correction through the control system; obtaining the coverage uniformity data of the coal pile surface for the unfolding area of ​​the film; adjusting the unfolding angle of the film according to the uniformity data; ensuring the flatness of the film during the retraction and extension process through the guiding system of the drum device; if the film deviates, performing trajectory correction through the guiding system; recording the number of times the film is retracted and extended and the usage status through the control system; judging whether the film needs maintenance according to the usage status; obtaining the environmental condition data of the retraction and extension operation for optimization and adjustment of subsequent operations.

[0090] The tension data of the film is obtained through the sensor system of the reel device.

[0091] For example, during the film retraction and unwinding process, the reel unit is equipped with high-precision tension sensors mounted on the support shafts on either side of the reel to monitor changes in film tension in real time. The sensors collect data 10 times per second, with a measurement range of 0-500N and an accuracy of ±0.5N. As the film is unrolled or reeled onto the coal pile, tension fluctuations may occur due to wind or the irregular shape of the coal pile. These sensors promptly capture these changes and transmit them to the control system. This ensures that the film does not tear due to excessive tension or sag due to insufficient tension, thereby improving the stability of the retraction and unwinding operation. The reel unit's retraction and unwinding speed is adjusted based on the tension data.

[0092] Preferably, after receiving the tension data, the control system adjusts the speed of the drive motor through a built-in algorithm.

[0093] For example, when tension exceeds 400N, the system automatically reduces the winding speed to 0.5m / s; when tension falls below 100N, it increases the speed to 1.2m / s. This dynamic adjustment maintains constant tension on the film, reducing wrinkles or stretching caused by inappropriate speed. Adjusting the speed optimizes the film's flatness and lifespan while also reducing energy consumption during operation. If tension exceeds a preset threshold, the control system suspends winding and unwinding operations and performs parameter corrections.

[0094] Specifically, the preset tension threshold is 50N-450N. If the sensor detects a tension of 480N, the control system immediately pauses the motor and initiates a self-check to check for issues such as film jamming or guide system misalignment. Once the correction is complete, the system restarts at a low speed of 0.3m / s, gradually resuming normal operation. This effectively prevents film damage or equipment failure, ensuring safe operation. Coverage uniformity data is collected on the coal pile surface within the film's deployment area.

[0095] For example, the winder unit is equipped with an infrared camera, mounted on the front of the crawler platform, to scan the film's fit against the coal pile surface. The camera takes images every 1 meter, analyzes the film's continuity, and generates a uniformity score on a scale of 0-100. A score below 80 indicates partial overhangs or wrinkles in the film. The purpose of obtaining uniformity data is to ensure that the film completely covers the coal pile, preventing dust from flying and rainwater from seeping in. The film's deployment angle is adjusted based on this uniformity data.

[0096] Preferably, the control system drives the hydraulic push rod of the guide system according to the data fed back by the infrared camera to adjust the tilt angle when the covering film is unfolded.

[0097] For example, if the coal pile surface has a 5° slope, the system adjusts the film's deployment angle to be parallel to the slope, ensuring a tight fit. This adjustment improves the film's protective effectiveness, extends its lifespan, and reduces ongoing maintenance costs. A guide system on the reel ensures the film remains flat during deployment and retraction.

[0098] Specifically, the guide system utilizes two sets of parallel rails spaced 16.2 meters apart, slightly wider than the film width. Each set of rails is equipped with three rubber-coated rollers with a coefficient of friction of 0.3, ensuring a smooth film during retraction and deployment. This guaranteed flatness prevents wrinkles and curling on the film, preserving its protective properties. If the film deviates, the guide system will correct its trajectory.

[0099] For example, the guide system features a built-in displacement sensor that detects the distance between the film edge and the guide rail. If the deviation exceeds 50mm, a hydraulic push rod pushes one side of the guide rail to correct the film's trajectory at a speed of 0.1m / s. This trajectory correction prevents the film from straying from the reel, causing uneven winding or equipment damage. The control system also records the number of times the film is retracted and released, as well as its usage status.

[0100] Preferably, the control system has a built-in storage module to record the start time, duration and tension data of each retraction and extension.

[0101] For example, after the film has been retracted and extended 100 times, the system generates a usage status report showing that the film surface is slightly worn. This record helps operators understand the film's lifespan and arrange maintenance in a timely manner. Whether the film needs maintenance is determined based on usage status.

[0102] Specifically, if the report indicates moderate film wear or the number of retraction and extension cycles exceeds 150, the system issues a maintenance reminder, recommending cleaning or replacement of the film. This maintenance decision aims to extend the film's lifespan, reduce replacement frequency, and save costs. Environmental condition data from retraction and extension operations is captured for optimization and adjustment in subsequent operations.

[0103] For example, the crawler platform is equipped with an anemometer and temperature sensors to record wind speed and ambient temperature during operation. If the wind speed exceeds 10m / s, the system recommends suspending operation; if the temperature drops below -10°C, the heating device is activated to prevent the coating from hardening. This data provides a basis for optimizing operating parameters and improving the equipment's adaptability in complex environments.

[0104] S109. The winding and storage of the coating by compression storage includes: performing initial processing on the coating by using preset compression parameters; adjusting the compression parameters according to the material properties of the coating; if the material of the coating is a highly elastic material, reducing the compression force by the winding device; if the material of the coating is a low-elastic material, increasing the compression force by the winding device; obtaining deformation data of the coating during the compression process by a monitoring system of the winding device; adjusting the winding speed of the winding device according to the deformation data; obtaining capacity utilization data for the storage interval of the coating; optimizing the storage layout of the coating according to the capacity utilization data; recording the compressed storage state of the coating by the control system; obtaining stability data of the coating after storage for reference in subsequent retraction and release operations.

[0105] Initial processing of the overlay using preset compression parameters.

[0106] For example, before winding the film, a basic compression parameter (e.g., 5 kPa) can be set based on the film's initial thickness and width. This ensures that the film doesn't become too loose during winding, resulting in wasted storage space. This creates a stable winding foundation at the initial stage, providing a reference for subsequent adjustments and reducing the risk of the film slipping on the roll. Adjust the compression parameter based on the film's material properties.

[0107] Specifically, if the film is made of polyethylene, which is highly flexible, the compression pressure can be increased to 6 kPa to improve storage density. If the film is made of polypropylene, which is less flexible, the pressure can be adjusted to 4 kPa to prevent damage from excessive compression. This approach optimizes storage performance based on the characteristics of different materials and extends the life of the film. If the film is made of a highly elastic material, the compression force can be reduced using a reeling device.

[0108] For example, for rubber-based films, the compression pressure can be reduced to 3 kPa, coupled with a slower winding speed, to prevent the elastic material from irreversibly deforming under high pressure. This not only protects the film's physical properties but also ensures its recovery upon subsequent unwinding. For films made from low-elastic materials, the compression force can be increased using a winding mechanism.

[0109] For example, for low-elasticity PVC films, the pressure can be increased to 7 kPa to fully utilize the storage compartment space. This significantly improves capacity utilization, reduces the frequency of roll changes, and thus enhances operational efficiency. The roll unit's monitoring system captures film deformation data during the compression process.

[0110] For example, sensors mounted on the roll can record changes in film thickness in real time. If a thickness reduction of more than 10% is detected in a particular section, it indicates possible localized overcompression. This helps identify problems promptly and prevent film damage. The roll-up speed is then adjusted based on this deformation data.

[0111] For example, if deformation data indicates excessive local compression of the film, the winding speed can be reduced from 2 meters per minute to 1.5 meters per minute to alleviate deformation pressure. This effectively protects the integrity of the film and ensures storage quality. Capacity utilization data is obtained for each film storage interval.

[0112] For example, by counting the number of winding layers in each bay, if a particular bay is only utilizing 70% of its capacity, the monitoring system indicates that the layout needs to be optimized. This provides data support for subsequent adjustments. The storage layout of the laminated film is optimized based on capacity utilization data.

[0113] For example, compartments with lower capacity utilization are prioritized for thinner films to balance overall storage density. This maximizes roll space utilization and reduces resource waste. The control system records the film's compressed storage status.

[0114] For example, the system can record data such as compression pressure and number of winding layers at each interval, creating a storage log. This provides traceability for subsequent operations and improves management efficiency. Data on the film's stability after storage can be used as a reference for subsequent retraction and unfolding operations.

[0115] For example, by testing the deformation recovery rate of the film after 72 hours of storage, if the recovery rate is less than 90%, the next winding parameters need to be adjusted. This method can continuously optimize the winding and unwinding process, ensuring operational safety and the long-term usability of the film.

[0116] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for storing and transporting film covering in an open-air coal yard, characterized in that: The specific steps include: Step 1: obtaining a film for preventing dust and water pollution; Step 2, winding and storing the coating film by compression storage; Step 3, using a movable chassis to carry and store the roll device for the coated film; Step 4: transporting the reel device to a target area of ​​an open-air coal yard via the movable chassis; Step 5: retracting and extending the covering film by the reel device to cover or retract the coal pile in the open-air coal yard.

2. The storage and transportation method for film covering in an open-air coal yard according to claim 1 is characterized in that: In step 2, the coating film is wound and stored by compression storage, including: The coating is compressed by adopting a spiral winding method; Limiting the winding range of the coating film by a preset spacing structure; storing a plurality of the coating films in different compartments of the roll device; Adjusting the order and position of the winding storage by a control system; Determining the amount of the film to be wound and stored each time according to the covering requirements of the open-air coal yard; If the film reaches a preset storage capacity, the winding operation is stopped and the storage status is recorded; The coating is fixed by a driving system of the winding device to prevent the winding from being loose; For each of the coating films, obtaining the dimension data thereof after winding; adjusting subsequent winding parameters according to the dimensional data; The control system generates a storage log for reference in subsequent retracting and extending operations.

3. The storage and transportation method for film covering in an open-air coal yard according to claim 1, characterized in that: In step 3, a removable chassis is used to carry and store the roll device for the coated film, including: The reel device is carried by a crawler chassis; A power drive system is used to provide mobility for the crawler chassis; adjusting the moving path of the crawler chassis according to the terrain characteristics of the open-air coal yard; Controlling the moving speed of the crawler chassis through the power drive system; If the crawler chassis encounters an obstacle, the moving direction is adjusted through a preset obstacle avoidance strategy; adjusting the balance parameters of the crawler chassis according to the weight distribution of the reel device; obtaining current position information through a positioning system of the crawler chassis; determining a moving route based on the distance between the current location information and the target area; Performing a moving operation by means of the power drive system; Obtain terrain feedback data during movement for subsequent path optimization.

4. The storage and transportation method for film covering in an open-air coal yard according to claim 1, characterized in that: In step 4, the reel device is transported to a target area of ​​an open-pit coal yard via the movable chassis, including: Acquiring coordinate data of a target area of ​​the open-pit coal yard; Planning a transport route using a navigation system of the movable chassis; driving the movable chassis to move according to the transport path; If the movable chassis deviates from the transport path, path correction is performed by the navigation system; Acquiring surrounding environment information through the sensor system of the movable chassis; Adjusting movement speed and direction according to the environmental information; determining a docking position of the movable chassis according to the terrain conditions of the target area; confirming, by the navigation system, whether the movable chassis has reached the target area; If the target area is reached, the movement is stopped and the movable chassis is locked; Acquire the coverage requirement data of the target area for use in the subsequent film retraction and deployment operations.

5. The storage and transportation method for film covering in open-air coal yard according to claim 1 is characterized in that: In step 5, the film is retracted and extended by the reel device, including: Obtaining coverage requirement information of the open-pit coal yard; Determining the quantity and position of the covering film to be retracted and released according to the covering requirement information; Selecting a corresponding storage interval by a control system of the reel device; A drive system is used to activate the retracting and extending function of the reel device; If it is a covering operation, the covering film is unrolled onto the surface of the coal pile by the winding device; If it is a retracting operation, the coating film is reeled back to the corresponding storage compartment by the reel device; Limiting the movement trajectory of the film during the retraction and extension process by a guide system; adjusting the operating parameters of the drive system according to the unfolding or winding state of the coating; Recording the completion status of each retraction and extension operation through the control system; Feedback data on the retraction and extension effect of the coating is obtained to optimize subsequent operations.

6. The storage and transportation method for film covering in an open-air coal yard according to claim 1, characterized in that: In step 5, the film is retracted and extended by the reel device, including: Acquiring tension data of the coating through a sensing system of the reel device; adjusting the retraction and unretraction speed of the reel device according to the tension data; If the tension data exceeds a preset threshold, the control system will suspend the retraction and extension operation and perform parameter correction; Acquiring coverage uniformity data of the coal pile surface for the deployed area of ​​the coating; adjusting the spreading angle of the coating according to the uniformity data; The flatness of the film during the reeling and unreeling process is ensured by the guide system of the reel device; If the coating is offset, the guide system is used to correct the trajectory; Recording the number of times the film is retracted and released and the usage status of the film by the control system; Determining whether the coating needs maintenance according to the usage status; Acquire environmental condition data of the retraction and extension operation for optimization and adjustment of subsequent operations.

7. The storage and transportation method for film covering in an open-air coal yard according to claim 1, characterized in that: In step 5, the coating film is wound and stored by compression storage, including: performing initial processing on the coating using preset compression parameters; adjusting the compression parameters according to the material properties of the coating; If the coating is made of a highly elastic material, the compression force is reduced by the roller device; If the coating is made of a low-elastic material, the compression force is increased by the roller device; Obtaining deformation data of the coating during the compression process through a monitoring system of the winding device; adjusting the winding speed of the winding device according to the deformation data; Obtaining capacity utilization data for the storage interval of the coating; Optimizing the storage layout of the coating according to the capacity utilization data; Recording the compressed storage state of the coating by the control system; Obtain the stability data of the film after storage for reference in subsequent storage and unfolding operations.

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