A belt conveyor assembly system and layout method for ships with ultra-large water level differences.

Abstract

This invention relates to a belt conveyor assembly system and its arrangement method suitable for ultra-large water level differences. It is applicable to the field of dry bulk cargo terminal construction technology. The technical solution adopted by this invention is: a belt conveyor assembly system suitable for ultra-large water level differences, characterized in that it includes a yard reclaiming and transportation system, a waterside loading system, and a belt conveyor assembly system; the belt conveyor assembly system includes a belt conveyor assembly parking platform located at the upper end of the ramp, a longitudinal traction device, and belt conveyor assemblies located on the ramp; the yard reclaiming and transportation system is located at the upper end of the ramp and includes yard reclaiming equipment and a yard belt conveyor transportation system; the waterside loading system is located at the lower end of the ramp and includes a cargo ship, a ship loader, a pontoon with a lifting device, a steel approach bridge, and a belt conveyor.

Description

Technical Field

[0001] This invention relates to the field of dry bulk terminal construction technology, and more specifically, to a belt conveyor assembly system and arrangement method suitable for ships with large water level differences. Background Technology

[0002] Constructing dry bulk cargo terminals on rivers in the western mountainous regions faces two main technical challenges. First, the extreme water level differences in the waterways render conventional terminal loading and unloading systems unsuitable. In parts of Chongqing within the Three Gorges Reservoir area, the water level difference between the high and low points is approximately 25 to 30 meters. In the deep-water channels of the reservoir areas of the large-scale hydropower stations in the lower reaches of the Jinsha River, the water level difference can reach as high as 60 meters. Second, the complex terrain of the reservoir areas results in very limited land space for the terminals, with some terminals facing a land depth of less than 100 meters. Common telescopic conveyor belt loading systems are impractical in such environments with such large water level differences due to the lack of suitable storage space. Therefore, how to construct dry bulk cargo loading terminals in areas with extreme water level differences and very limited land space is an engineering and technical problem that needs to be solved.

[0003] To address the challenge of loading bulk cargo into ships under conditions of extreme water level differences, invention patent (CN 113371473 A) discloses a combined wharf construction approach. This involves constructing separate high-water-level, mid-water-level, and low-water-level loading and unloading platforms, coupled with appropriate loading and unloading machinery, to meet the loading requirements. Utility model (CN202089588 U) proposes a solution using a series of belt conveyor units. This system utilizes multiple series-connected belt conveyor units on a ramp and their land-based traction system to load bulk cargo. This system has both longitudinal and transverse traction systems, requiring frequent disassembly and assembly of the belt conveyor units during water level fluctuations, and necessitating the rotational function of the wheels on each individual belt conveyor. The system is complex and inconvenient to use. Therefore, considering conditions of extreme water level differences and narrow land areas, it is necessary to provide a novel, simple, and easy-to-use dry bulk cargo loading system and its layout method. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a belt conveyor assembly system and arrangement method for ships with ultra-large water level differences.

[0005] In one aspect, a belt conveyor loading system for ships with extremely large water level differences is provided, including a yard reclaiming and transportation system 1, a waterside loading system 3, and a belt conveyor system; the belt conveyor system includes a belt conveyor parking platform 2 located at the upper end of an inclined ramp 12, a longitudinal traction device, and belt conveyors located on the inclined ramp 12; the yard reclaiming and transportation system 1 is located at the upper end of the inclined ramp 12 and includes a yard reclaiming device 16 and a yard belt conveyor system 17; the waterside loading system 3 is located at the lower end of the inclined ramp 12 and includes a cargo ship 4, a ship loader 5, a pontoon 6 with a gantry crane, a steel approach bridge, and a belt conveyor 7.

[0006] Preferably, the belt conveyor parking platform 2 is equipped with a winch room 13, and the longitudinal traction device includes a winch unit, a diverter pulley 14 and a traction wire rope 15 located in the winch room 13.

[0007] Preferably, the belt conveyor group consists of multiple single belt conveyor sections connected in parallel, with each single belt conveyor section located on a different belt conveyor track 21, and the tail of each single belt conveyor section connected to the traction winch in the winch group via a traction steel wire rope 15.

[0008] Preferably, the single-section belt conveyor is composed of a single-section belt conveyor head frame 20, multiple standard-length single-section belt conveyor intermediate frames 19, and a single-section belt conveyor tail frame 18 connected by a hinge.

[0009] Preferably, the head of the single-section belt conveyor is equipped with a rotatable chute, which can be turned to face forward to feed material to the belt conveyor in front, or rotated at a certain angle to feed material to the tail of another single-section belt conveyor.

[0010] Preferably, the belt conveyor track is laid on the ramp 12 and the belt conveyor parking platform 2 using an open track method.

[0011] Secondly, a method for operating the conveyor belt loading system described in any of the first aspects is provided, comprising: when the water level is at its lowest, the waterside loading system 3 is located at the bottom of the ramp 12; the first conveyor belt car 8 is located at the top of the ramp, and the head of the second conveyor belt car 9 is connected to the tail of the first conveyor belt car 8, with multiple conveyor belt cars connected in sequence to form a conveyor belt car group; the tail of the last conveyor belt car is connected to the steel approach bridge and conveyor belt 7 in the waterside loading system 3; the yard reclaiming and transport system 1 transports bulk cargo to the first conveyor belt car 8 of the conveyor belt car group, and then through the second conveyor belt car 9 and subsequent conveyor belt cars for transfer transport, reaching the waterside loading system. 3. Loading is then achieved. As the water level gradually rises, the traction winch in the longitudinal traction device pulls the last section of the conveyor belt upwards via the traction wire rope 15. As the water level continues to rise, when it reaches the tail of the penultimate conveyor belt 9, the traction winch pulls the last section of the conveyor belt directly to the parking position of the conveyor belt group parking platform 2. The jacking device of the waterside loading system 3 hoists the steel approach bridge and conveyor belt 7 to the track corresponding to the penultimate conveyor belt 9. This process is repeated until the water level rises directly to the working water level corresponding to the first conveyor belt 9. At this time, only the first conveyor belt 8 is working, while the other conveyor belt 9s are in the parking position. The operation process for the water level drop is the reverse of this.

[0012] Thirdly, a method for arranging a belt conveyor assembly ship system as described in any of the first aspects is provided, comprising:

[0013] Step 1: Collect basic information on the land and water areas of the wharf; the basic information on the land and water areas of the wharf includes land depth, land passage information, slope terrain information, surrounding water conditions, design high water level and design low water level;

[0014] Step 2: Based on the basic information of the wharf's land and water areas, construct a layout model of the belt conveyor assembly ship system;

[0015] Step 3: Solve the layout model using the primary and secondary recursive algorithm to generate the layout dimensions and scheme of the belt conveyor assembly ship system.

[0016] Preferably, step 2, which involves constructing the layout model of the belt conveyor assembly ship system, includes:

[0017] Step 2.1: Construct a layout model of ramp 12 based on its length, width, and slope dimensions;

[0018] Step 2.2: Construct the layout model of the belt conveyor parking platform 2 based on the length and width dimensions.

[0019] Preferably, step 3 includes:

[0020] Step 3.1: Analyze the importance of layout dimension parameters and determine the main key parameters and auxiliary parameters;

[0021] Step 3.2: Determine the range or optimal value of the key parameters;

[0022] Step 3.3: Assign initial values ​​to the key parameters in sequence, and calculate other auxiliary parameters accordingly;

[0023] Step 3.4: Analyze and compare the generated layout size parameters, and generate the final layout size;

[0024] Step 3.5: Develop a layout plan for the belt conveyor assembly ship system based on the layout dimensions.

[0025] The beneficial effects of this invention are as follows: The method for arranging a belt conveyor system with ultra-large water level difference provided by this invention collects basic information on the land and water areas of the wharf, then constructs an arrangement model of the belt conveyor system, and then uses a primary-secondary recursive algorithm to solve the arrangement model, generating the layout dimensions of the belt conveyor assembly ship system, and then generating a layout scheme, thereby providing a feasible solution for a belt conveyor system under ultra-large water level difference conditions, and improving the convenience and efficiency of belt conveyor system layout. Attached Figure Description

[0026] Figure 1 A schematic plan view of a belt conveyor assembly ship system at low water levels;

[0027] Figure 2 A schematic diagram of the AA section of the belt conveyor assembly ship system at low water level;

[0028] Figure 3 A partial enlarged view of the belt conveyor assembly system for a ship;

[0029] Figure 4 A plan view of the belt conveyor assembly ship system at high water level;

[0030] Figure 5 A schematic diagram of the DD cross-section of the belt conveyor assembly ship system at high water level;

[0031] Figure 6 Cross-sectional view of a single belt conveyor car section in a ship assembly system;

[0032] Figure 7 A plan view of a single belt conveyor section for assembling a ship's belt conveyor system;

[0033] Figure 8 BB cross-sectional view of the belt conveyor assembly system for a ship;

[0034] Figure 9 CC section view of the belt conveyor assembly system for a ship;

[0035] Figure 10 EE cross-sectional view of the belt conveyor assembly system for a ship;

[0036] Figure 11 A schematic diagram of the structural cross-section connecting individual belt conveyor sections of a belt conveyor assembly ship system.

[0037] Figure 12 A flowchart illustrating the layout method for assembling a ship system using belt conveyors.

[0038] Explanation of reference numerals in the attached drawings: 1. Yard reclaiming and transportation system; 2. Belt conveyor parking platform; 3. Waterside loading system; 4. Cargo ship; 5. Ship loader; 6. Pontoon with lifting device; 7. Steel approach bridge and belt conveyor; 8. First belt conveyor car; 9. Second belt conveyor car; 10. Third belt conveyor car; 11. Fourth belt conveyor car; 12. Inclined ramp; 13. Winch room; 14. Diverting pulley; 15. Traction wire rope; 16. Yard reclaiming equipment; 17. Yard belt conveyor transportation system; 18. Tail frame of a single belt conveyor car; 19. Intermediate frame of a single belt conveyor car; 20. Head frame of a single belt conveyor car; 21. Belt conveyor track. Detailed Implementation

[0039] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that those skilled in the art can make several modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0040] Example 1

[0041] A belt conveyor assembly system for ships with extremely large water level differences, such as Figure 1 As shown, it includes a yard reclaiming and transportation system 1, a waterside ship loading system 3, and a belt conveyor system; the belt conveyor system includes a belt conveyor parking platform 2 located at the upper end of the ramp 12, a longitudinal traction device, and belt conveyors located on the ramp 12; the yard reclaiming and transportation system 1 is located at the upper end of the ramp 12 and includes a yard reclaiming device 16 and a yard belt conveyor system 17; the waterside ship loading system 3 is located at the lower end of the ramp 12 and includes a cargo ship 4, a ship loader 5, a pontoon with a gantry crane 6, a steel approach bridge, and a belt conveyor 7.

[0042] The belt conveyor parking platform 2 is equipped with a winch room 13, and the longitudinal traction device includes a winch unit, a diverter pulley 14 and a traction wire rope 15 located in the winch room 13.

[0043] like Figure 2 , 3 as well as Figure 8-11As shown, the belt conveyor train set consists of multiple single belt conveyor cars connected in parallel. Each single belt conveyor car is located on a different belt conveyor track 21, and the tail of each single belt conveyor car is connected to the traction winch in the winch unit via a traction steel wire rope 15. For example, the belt conveyor train set consists of 4 single belt conveyor cars, each 60 meters long.

[0044] like Figure 6 and Figure 7 As shown, a single-section belt conveyor car consists of a single-section belt conveyor head frame 20, multiple standard-length single-section belt conveyor intermediate frames 19, and a single-section belt conveyor tail frame 18 connected by a hinge.

[0045] The head of a single-section belt conveyor is equipped with a rotatable chute, which can be turned to face forward to feed material to the belt conveyor in front, or rotated at a certain angle to feed material to the tail of another single-section belt conveyor.

[0046] The belt conveyor rails are laid on the ramp 12 and the belt conveyor parking platform 2 using an open-track method. It should be noted that this application takes the slope ratio of the ramp 12 as 1:4 as an example, but the slope ratio of the ramp 12 is not limited to 1:4.

[0047] Example 2

[0048] A method for operating a belt conveyor assembly system for a ship includes: when at the lowest water level, such as Figure 1 , 2 As shown, the water-side loading system 3 is located at the bottom of the ramp 12; the first conveyor belt car 8 is located at the top of the ramp 12, and the head of the second conveyor belt car 9 connects directly to the tail of the first conveyor belt car 8. Multiple conveyor belt cars are connected in this way to form a conveyor belt car group; the tail of the last conveyor belt car connects to the steel approach bridge and conveyor belt 7 in the water-side loading system 3; the yard reclaiming and transportation system 1 transports bulk cargo to the first conveyor belt car 8 of the conveyor belt car group, and then through the second conveyor belt car 9 and subsequent conveyor belt cars for transfer transportation, reaching the water-side loading system. The system 3 then proceeds to load the ship; as the water level gradually rises, the traction winch in the longitudinal traction device pulls the last section of the conveyor belt upwards via the traction wire rope 15; as the water level continues to rise, reaching the tail of the penultimate conveyor belt 9, the traction winch pulls the last section of the conveyor belt directly to the parking position of the conveyor belt group parking platform 2; the jacking device of the water-side ship loading system 3 hoists the steel approach bridge and conveyor belt 7 onto the track corresponding to the penultimate conveyor belt 7; this process is repeated until the water level rises directly to the operating water level corresponding to the first conveyor belt 7, as... Figure 4 , 5 As shown, at this time only the first belt conveyor 8 is working, while the other belt conveyors are parked; the operation procedure for the water level drop process is the reverse.

[0049] Example 3

[0050] This invention also provides a method for arranging a belt conveyor assembly ship system adapted to environments with extremely large water level differences. The arrangement method is as follows: Figure 12 As shown, steps S10 to S30 are included:

[0051] S10. Collect basic information on the land and water areas of the wharf; the basic information includes land depth, land passage information, slope terrain information, surrounding water area information, design high water level, and design low water level.

[0052] S20. Based on the basic information of the wharf's land and water areas, construct a layout model for the belt conveyor system.

[0053] In this embodiment, a ramp layout model as shown in formula a1 and a rear platform layout model as shown in formula a2 are specifically constructed.

[0054]

[0055] Where ΔH is the design water level difference of the wharf, h1 is the design high water level of the wharf, and h2 is the design low water level of the wharf; L x L' represents the theoretical length of the ramp in the horizontal direction, and i represents the slope of the ramp; x L represents the actual length of the ramp, and l1 represents the margin of safety at both ends of the ramp; s L is the distance between the land boundary (starting point of the ramp) and the waterway boundary. c The required distance for the waterside loading system, taking into account the safe distance from the waterway; B x Let n be the width of the ramp, n be the number of belt conveyors, and b be the width required for a single belt conveyor.

[0056]

[0057] Among them, L p l represents the length of the rear platform. c L is the length of a single conveyor belt car; l2 is the distance from the conveyor belt parking position to the front line of the dock; l3 is the distance required to arrange the traction device along the length; l4 is the width of the passageway to the rear platform. z B represents the depth of the land area. p b1 represents the width of the rear platform, and b1 represents the additional distance required to arrange the traction device in the width direction.

[0058] S30. Solve the layout model to generate the layout dimensions and scheme of the belt conveyor assembly ship system. Specifically, use a primary-secondary recursive algorithm to solve the layout model and generate the dimensional parameter values ​​of the main layout. The steps are as follows:

[0059] S31. Analyze the importance of layout dimension parameters and determine the main key parameters and auxiliary parameters.

[0060] In this embodiment, the main key parameter is the land depth L of the wharf. z The slope i of the ramp and the width b required for a single belt conveyor are considered, while other parameters are secondary parameters.

[0061] S32. Determine the range or optimal value of key parameters.

[0062] In this embodiment, the land depth L is obtained based on the dock topography. z The length is 80 meters. The steepest slope of the ramp should be controlled at 1:4; the gentler the slope, the longer the required ramp length. The width b required for a single belt conveyor is 2.5 to 3 meters, and the belt width is determined by the conveyor's capacity and speed, which in turn determines its layout width.

[0063] S33. Assign initial values ​​to the key parameters in sequence, and calculate other auxiliary parameters accordingly.

[0064] In this embodiment, the distance l2 from the belt conveyor parking position to the front line of the wharf is 3 meters; the distance l3 required for arranging the traction device along the length is 10 meters; and the width l4 required for arranging a passageway on the rear platform is 7 meters. The water level difference ΔH of the river where the wharf is located is 55 meters; considering the safe distance from the waterway, the distance L required for the waterside loading system is... c The distance L is 75 meters, representing the distance between the land boundary (the starting point of the ramp) and the waterway boundary. s The distance is 350 meters. The measurements are performed sequentially according to the parameters mentioned above:

[0065] When the slope of the ramp is set to 1:5, the length of a single belt conveyor is 60 meters, the length of the ramp is 280 meters, the required number of belt conveyors is 5, and the width of the ramp is 15 meters. The length of the ramp does not meet the requirements of formula a1.

[0066] When the slope of the ramp is set to 1:4.5, the length of a single belt conveyor is 60 meters, the length of the ramp is 252.5 meters, the required number of belt conveyors is 5, and the width of the ramp is 15 meters. The length of the ramp meets the requirements of formula a1.

[0067] When the slope of the ramp is set to 1:4, the length of a single belt conveyor is 60 meters, the length of the ramp is 225 meters, the required number of belt conveyors is 4, and the width of the ramp is 12 meters. The length of the ramp satisfies the requirements of formula a1.

[0068] S34. Analyze and compare the generated layout size parameters, and generate the final layout size.

[0069] In this embodiment, the slope of the ramp is set to 1:4.

[0070] S35. Develop a layout plan for the belt conveyor assembly ship system based on the layout dimensions.

Claims

1. A belt conveyor assembly system for ships with extremely large water level differences, characterized in that, It includes a yard reclaiming and transportation system, a water-side ship loading system, and a belt conveyor system; the belt conveyor system includes a belt conveyor parking platform located at the upper end of the ramp, a longitudinal traction device, and belt conveyors located on the ramp; the yard reclaiming and transportation system is located at the upper end of the ramp and includes yard reclaiming equipment and a yard belt conveyor system; the water-side ship loading system is located at the lower end of the ramp and includes a cargo ship, a ship loader, a pontoon with a lifting device, a steel approach bridge, and a belt conveyor. The belt conveyor parking platform is equipped with a winch room, and the longitudinal traction device includes a winch unit, a redirecting pulley and a traction wire rope located in the winch room. The belt conveyor group consists of multiple single belt conveyor sections connected in parallel. Each single belt conveyor section is located on a different belt conveyor track, and the tail of each single belt conveyor section is connected to the traction winch in the winch group via a traction steel wire rope.

2. The belt conveyor assembly system for ships with ultra-large water level differences according to claim 1, characterized in that, The single-section belt conveyor consists of a single-section belt conveyor head frame, multiple standard-length single-section belt conveyor intermediate frames, and a single-section belt conveyor tail frame connected by a hinge.

3. The belt conveyor assembly system for ships with ultra-large water level differences according to claim 1, characterized in that, The head of the single-section belt conveyor is equipped with a rotatable chute, which can be turned to face forward to feed material to the belt conveyor in front, or rotated at a certain angle to feed material to the tail of another single-section belt conveyor.

4. The belt conveyor assembly system for ships with ultra-large water level differences according to claim 1, characterized in that, The belt conveyor track is laid in an open-track manner on the ramp and the belt conveyor parking platform.

5. A method for operating a belt conveyor assembly system for ships as described in any one of claims 1 to 4, characterized in that, include: At the lowest water level, the water-side loading system is located at the bottom of the ramp; the first conveyor belt car is at the top of the ramp, and the head of the second conveyor belt car connects directly to the tail of the first conveyor belt car. Multiple conveyor belt cars are connected in this manner to form a conveyor belt car group; the tail of the last conveyor belt car connects to the steel approach bridge and conveyor belt in the water-side loading system. The yard reclaiming and transport system transports bulk cargo to the first conveyor belt car of the conveyor belt car group, and then sequentially through the second and subsequent conveyor belt cars for transfer, reaching the water-side loading system for loading onto the ship. As the water level gradually rises, the longitudinal traction... The traction winch in the traction device pulls the last section of the conveyor belt upwards via a traction steel wire rope. As the water level continues to rise, when it reaches the tail of the penultimate conveyor belt, the traction winch pulls the last section of the conveyor belt directly to its parking position on the conveyor belt assembly parking platform. The gantry crane of the water-side loading system hoists the steel approach bridge and conveyor belts onto the track corresponding to the penultimate conveyor belt. This process is repeated until the water level rises directly to the operating water level corresponding to the first conveyor belt, at which point only the first conveyor belt is in operation, while the other conveyor belts are in their parking positions. The operation process for the water level drop is the reverse of this.

6. A method for arranging a belt conveyor assembly ship system as described in any one of claims 1 to 4, characterized in that, include: Step 1: Collect basic information on the land and water areas of the wharf; the basic information on the land and water areas of the wharf includes land depth, land passage information, slope terrain information, surrounding water conditions, design high water level and design low water level; Step 2: Based on the basic information of the wharf's land and water areas, construct a layout model of the belt conveyor assembly ship system; Step 3: Solve the layout model using the primary and secondary recursive algorithm to generate the layout dimensions and scheme of the belt conveyor assembly ship system.

7. The arrangement method of the belt conveyor assembly ship system according to claim 6, characterized in that, Step 2, the construction of the layout model for the belt conveyor assembly ship system includes: Step 2.1: Construct a layout model of the ramp based on its length, width, and slope. Step 2.2: Construct a layout model of the belt conveyor parking platform based on the length and width dimensions.

8. The arrangement method of the belt conveyor assembly ship system according to claim 6 or 7, characterized in that, Step 3 includes: Step 3.1: Analyze the importance of layout dimension parameters and determine the main key parameters and auxiliary parameters; Step 3.2: Determine the range or optimal value of the key parameters; Step 3.3: Assign initial values ​​to the key parameters in sequence, and calculate other auxiliary parameters accordingly; Step 3.4: Analyze and compare the generated layout size parameters, and generate the final layout size; Step 3.5: Develop a layout plan for the belt conveyor assembly ship system based on the layout dimensions.

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