A belt conveyor with a multi-segment arc structure

Abstract

This invention relates to the field of bulk material conveying technology for ships, and discloses a multi-segment arc-shaped belt conveyor device installed inside the hull of a bulk material conveying vessel. The device includes: a frame; an outer belt assembly and an inner belt assembly mounted on the frame, the outer belt assembly including an outer conveyor belt, and the inner belt assembly including an inner conveyor belt, the outer and inner conveyor belts being arranged opposite each other to form a clamping channel for holding bulk materials; and multiple arc-shaped support assemblies, which are sequentially arranged on the frame along the bulk material conveying path. Each arc-shaped support assembly includes an arc-shaped support frame and support rollers mounted on the arc-shaped support frame. This invention, through the cooperation of the outer and inner belt assemblies to form a clamping channel for holding bulk materials, and in conjunction with the multiple sequentially arranged arc-shaped support assemblies, enables the conveying path to bend and extend along multiple arc-shaped directions, adapting to the installation space within the hull.

Description

Technical Field

[0001] This invention relates to the field of bulk material conveying technology for ships, specifically a belt conveyor with a multi-segment arc structure. Background Technology

[0002] Bulk cargo (such as coal, ore, grain, building materials, etc.) is one of the major categories of global maritime transport, involving a large amount of transportation and transshipment work. Currently, after cargo arrives at the destination port by ship, it relies on specialized unloading equipment (such as grab bucket unloaders, chain bucket unloaders, pneumatic unloaders, etc.) at the terminal to extract materials from the ship's hold and transfer them to the terminal yard or subsequent conveying system.

[0003] However, existing technical solutions have significant drawbacks: First, ship operations rely heavily on terminal equipment, resulting in poor autonomy. After a ship arrives at the port, unloading operations depend entirely on the availability of the terminal's unloading equipment. If the equipment malfunctions or the berths become congested, the ship can only wait in the port, causing a significant amount of wasted port time. Second, the investment in terminal infrastructure is substantial, limiting the port's versatility. Large-scale dedicated unloading machines are costly and time-consuming to build, and small ports or temporary operation points often lack such facilities, significantly restricting the berthing range and operational flexibility of bulk cargo ships. Third, the operation time is uncontrollable, resulting in low overall logistics efficiency. Affected by multiple external factors, the total time a ship spends in port is highly uncertain.

[0004] Furthermore, the infrastructure of major resource-exporting countries worldwide is generally weak, and their port conditions are poor, severely limiting the transportation of bulk commodities. Therefore, developing specialized equipment that can reduce dependence on port equipment, adapt to various types of ports, and enable ships to unload autonomously and quickly has significant market value. Summary of the Invention

[0005] The purpose of this invention is to provide a belt conveyor with a multi-segment arc-shaped structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-segment arc-shaped belt conveyor device, installed inside the hold of a bulk material transport vessel, comprising: frame; An outer belt assembly and an inner belt assembly are mounted on the frame. The outer belt assembly includes an outer conveyor belt, and the inner belt assembly includes an inner conveyor belt. The outer conveyor belt and the inner conveyor belt are arranged opposite to each other to form a clamping channel for clamping bulk materials. Multiple arc-shaped support components are sequentially arranged on the frame along the bulk material conveying path. Each arc-shaped support component includes an arc-shaped support frame and a support roller mounted on the arc-shaped support frame. The support rollers are respectively supported on the back of the outer conveyor belt and the inner conveyor belt. The gravity-type tensioning structure includes an outer belt tensioning assembly connected to the outer conveyor belt and an inner belt tensioning assembly connected to the inner conveyor belt.

[0007] The arc-shaped support assembly further includes a reinforcing frame and a roller frame. The reinforcing frame is fixed to the frame, the arc-shaped support frame is installed on the reinforcing frame, the roller frame is fixed to the arc-shaped surface of the arc-shaped support frame, and the support roller is rotatably installed on the roller frame.

[0008] Of the two adjacent support rollers, one is used to support the back of the outer conveyor belt, and the other is used to support the back of the inner conveyor belt.

[0009] The frame has a first auxiliary guide roller and a second auxiliary guide roller rotatably mounted on the inner side corresponding to the position of the outer belt tensioning assembly, and the outer conveyor belt passes around the first auxiliary guide roller and the second auxiliary guide roller in sequence. The outer belt tensioning assembly includes two parallel slide rails, a fixed pulley, a traction rope, and a counterweight. The two slide rails are mounted on the frame, and a slide block is slidably mounted on the slide rail. The first auxiliary guide roller is rotatably mounted between the two slide blocks. The fixed pulley is mounted on the frame. One end of the traction rope is connected to the slide block, and the other end of the traction rope passes around the fixed pulley and is connected to the counterweight.

[0010] The inner side of the frame is rotatably mounted with a third auxiliary guide roller and a fourth auxiliary guide roller corresponding to the position of the inner belt tensioning assembly; The inner belt tensioning assembly includes a counterweight frame, which is slidably installed on the inner side of the frame in a vertical direction. A tensioning guide roller is rotatably installed on the inner side of the counterweight frame. The tensioning guide roller is located below the center between the third auxiliary guide roller and the fourth auxiliary guide roller. The inner conveyor belt passes around the third auxiliary guide roller, the tensioning guide roller and the fourth auxiliary guide roller in sequence.

[0011] The outer belt assembly further includes an outer belt drive assembly, which is mounted on the frame and connected to the outer conveyor belt for transmission. The outer belt drive assembly includes an outer belt drive motor and a first drive roller mounted on the frame. The output end of the outer belt drive motor is fixedly connected to the central shaft of the first drive roller via a first reducer. The outer conveyor belt passes around the first drive roller, and the first drive roller drives the outer conveyor belt to circulate through friction.

[0012] The inner belt assembly further includes an inner belt drive assembly, which is mounted on the frame and connected to the inner conveyor belt for transmission. The inner belt drive assembly includes an inner belt drive motor and a second drive roller mounted on the frame. The output end of the inner belt drive motor is fixedly connected to the central shaft of the second drive roller via a second reducer. The inner conveyor belt passes around the second drive roller, and the second drive roller drives the inner conveyor belt to circulate through friction.

[0013] The outer belt assembly further includes an outer belt guide roller, a first pressing roller, and a second pressing roller. The outer belt guide roller, the first pressing roller, and the second pressing roller are respectively mounted on the frame and abut against different sections of the outer conveyor belt surface. The inner belt assembly also includes an inner belt guide roller and a third pressure roller, which are respectively mounted on the frame and abut against different sections of the inner conveyor belt.

[0014] The frame is equipped with belt cleaning components at positions below the ends of the outer and inner conveyor belts. The belt cleaning assembly includes a side plate, a rib plate, a telescopic rod, a telescopic spring, a cross plate, and a rubber cleaning brush. The side plate is fixed to the frame, the rib plate is installed on the side of the side plate, the telescopic rod passes through the rib plate, the telescopic spring is sleeved on the telescopic rod, and a cross plate is provided at the end of the telescopic rod. The cross plate is provided with a rubber cleaning brush, which elastically abuts against the return surface of the conveyor belt. Under the pushing action of the telescopic spring, the rubber cleaning brush always keeps close to the return surface of the conveyor belt, scraping off and cleaning the residual loose material adhering to the surface of the conveyor belt.

[0015] This also includes a hopper located at the beginning of the bulk material conveying path, and a receiving hopper, a guide pipe, and a discharge hopper located at the end of the bulk material conveying path. The horizontal area at the tail of the external conveyor belt is the receiving area. The hopper is set on the frame, and the outlet of the hopper is located directly above the receiving area. Two symmetrical baffles are provided on the inner side of the frame corresponding to the receiving area. The baffles limit and block the loose material to prevent it from leaking out from the side of the receiving area. The receiving hopper is mounted on the frame and is located below the discharge port of the clamping channel. An inclined guide pipe is provided at the discharge port at the bottom of the receiving hopper. The discharge hopper is located on the outside of the frame and is offset from the receiving hopper. The discharge hopper is used to transport bulk materials to the shore. The receiving hopper and the discharge hopper are connected by an inclined guide pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention uses an outer belt assembly and an inner belt assembly to form a clamping channel for bulk materials. Combined with multiple sequentially arranged arc-shaped support components, the transmission path can bend and extend along multiple arc directions to adapt to the installation space inside the ship's hold. At the same time, bulk materials are transferred by clamping and conveying, eliminating the need for dedicated unloading equipment at the dock. The ship itself can complete the unloading operation autonomously, effectively reducing the requirements for dock infrastructure. It can be applied to various port operation scenarios with different conditions, avoiding port congestion or equipment failure caused by waiting, and improving the overall efficiency of bulk material transfer.

[0017] This invention, by setting up a gravity tensioning structure, can continuously tension both the external and internal conveyor belts, preventing belts from becoming loose and slipping after long-term use and ensuring the stability of clamping and conveying. The belt cleaning component can automatically remove residual loose material adhering to the return surface of the conveyor belt, preventing loose material from spilling along the way and affecting the cleanliness of the device, thus reducing the amount of manual cleaning work. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-direction axial structure of the present invention; Figure 2 This is a schematic diagram of the overall second-direction axial structure of the present invention; Figure 3 This is a schematic diagram of the overall third-axis axial structure of the present invention; Figure 4 This is a schematic diagram of the first direction axis of the combined state of the outer belt assembly and the inner belt assembly of the present invention; Figure 5 This is a schematic diagram of the second-direction axial structure of the outer belt assembly and the inner belt assembly combined in the present invention; Figure 6 This is a schematic diagram of the third-direction axial structure of the outer belt assembly and the inner belt assembly combined in this invention; Figure 7 This is a schematic diagram of the fourth-direction axial structure of the outer belt assembly and inner belt assembly combined in this invention; Figure 8 This is a schematic diagram of the fifth-direction axial structure of the outer belt assembly and the inner belt assembly combined in this invention; Figure 9 for Figure 8 Enlarged structural diagram of section A in the middle; Figure 10 This is a side view of the outer belt assembly and inner belt assembly of the present invention in a combined state; Figure 11 This is a schematic diagram of the axial structure of the outer belt tensioning assembly of the present invention; Figure 12 This is a schematic diagram of the tail structure of the outer belt assembly of the present invention; Figure 13 This is a schematic diagram of the belt cleaning assembly of the present invention.

[0019] In the diagram: 100, Frame; 101, Hopper; 102, Receiving Hopper; 103, Guide Pipe; 104, Discharge Hopper; 200, Outer Belt Assembly; 210, Outer Conveyor Belt; 220, Outer Belt Drive Assembly; 221, Outer Belt Drive Motor; 222, First Reducer; 223, First Drive Roller; 230, Outer Belt Guide Roller; 240, Outer Belt Tensioning Assembly; 241, First Auxiliary Guide Roller; 242, Second Auxiliary Guide Roller; 243, Slide Rail; 244, Slide Base; 245, Fixed Pulley; 246, Traction Rope; 247, Counterweight; 250, First Pressure Roller; 260, Second Pressure Roller; 270, Baffle Plate; 280, Belt Cleaning Assembly; 28 1. Side plate; 282. Rib plate; 283. Telescopic rod; 284. Telescopic spring; 285. Horizontal plate; 286. Rubber cleaning brush; 300. Inner belt assembly; 310. Inner conveyor belt; 320. Inner belt drive assembly; 321. Inner belt drive motor; 322. Second reducer; 323. Second drive roller; 330. Inner belt guide roller; 340. Third pressure roller; 350. Inner belt tensioning assembly; 351. Third auxiliary guide roller; 352. Fourth auxiliary guide roller; 353. Counterweight frame; 354. Tensioning guide roller; 400. Arc-shaped support assembly; 401. Reinforcing frame; 402. Arc-shaped support frame; 403. Idler frame; 404. Support idler roller. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Please see Figures 1-13This invention provides a technical solution: a multi-segment arc-shaped belt conveyor device installed inside the hull of a bulk material transport vessel, comprising: a frame 100; an outer belt assembly 200 and an inner belt assembly 300 mounted on the frame 100, the outer belt assembly 200 including an outer conveyor belt 210, and the inner belt assembly 300 including an inner conveyor belt 310, the outer conveyor belt 210 and the inner conveyor belt 310 being arranged opposite to each other to form a clamping channel for clamping bulk materials; and multiple arc-shaped support assemblies. 400, multiple arc-shaped support components 400 are sequentially arranged on the frame 100 along the bulk material conveying path. Each arc-shaped support component 400 includes an arc-shaped support frame 402 and a support roller 404 installed on the arc-shaped support frame 402. The support roller 404 is respectively supported on the back of the outer conveyor belt 210 and the inner conveyor belt 310. The gravity tensioning structure includes an outer belt tensioning component 240 connected to the outer conveyor belt 210 and an inner belt tensioning component 350 connected to the inner conveyor belt 310.

[0022] Specifically, in use, the frame 100 is installed inside the hold of the bulk carrier, relying on the existing structure of the hold for overall fixation. Multiple arc-shaped support components 400 are arranged sequentially along the conveying path, allowing the entire clamping channel to bend and extend along multiple arc-shaped directions, fully adapting to the limited space inside the hold without occupying too much extra space. After the bulk material falls from the hopper 101 into the receiving area, it is clamped between the outer conveyor belt 210 and the inner conveyor belt 310. Under the synchronous drive of the outer belt drive component 220 and the inner belt drive component 320, it is continuously conveyed upward along the multiple arc-shaped clamping channel, and finally falls from the discharge port of the clamping channel into the receiving hopper 102. Then, it is guided through the guide pipe 103 into the discharge hopper 104 and directly conveyed to the shore to complete the unloading operation. The entire unloading process is completed by the ship's own equipment, without the need for special unloading equipment provided by the dock, thus achieving autonomous unloading.

[0023] The arc-shaped support assembly 400 also includes a reinforcing frame 401 and a roller frame 403. The reinforcing frame 401 is fixed to the frame 100, the arc-shaped support frame 402 is installed on the reinforcing frame 401, and the roller frame 403 is fixed to the arc-shaped surface of the arc-shaped support frame 402. The support roller 404 is rotatably installed on the roller frame 403. Specifically, two adjacent support rollers 404 are staggered to support the outer conveyor belt 210 and the inner conveyor belt 310 respectively. This can ensure the support strength while adapting to the curvature change of the arc-shaped conveying path, so that the outer conveyor belt 210 and the inner conveyor belt 310 can extend stably along the arc without local bending or wrinkling, thus ensuring the stability of the clamping and conveying.

[0024] Among the two adjacent support rollers 404, one is used to support the back of the outer conveyor belt 210, and the other is used to support the back of the inner conveyor belt 310. Specifically, the staggered support structure can make full use of the arc-shaped space, without having to set two sets of support rollers 404 corresponding to the outer conveyor belt 210 and the inner conveyor belt 310 on the same arc-shaped cross section. This can achieve a more curved arc-shaped transmission path. Moreover, the staggered arrangement of the support rollers 404 avoids locking the distance between the outer conveyor belt 210 and the inner conveyor belt 310 at the support rollers 404, allowing the belts to adaptively adjust the spacing according to the actual particle size of the bulk material, ensuring stable clamping of bulk materials of different particle sizes.

[0025] The frame 100 has a first auxiliary guide roller 241 and a second auxiliary guide roller 242 rotatably mounted on its inner side, corresponding to the position of the outer belt tensioning assembly 240. The outer conveyor belt 210 passes over the first auxiliary guide roller 241 and the second auxiliary guide roller 242 in sequence. The outer belt tensioning assembly 240 includes two parallel slide rails 243, a fixed pulley 245, a traction rope 246, and a counterweight 247. The two slide rails 243 are set on the frame 100, and a slide seat 244 is slidably mounted on the slide rails 243. The first auxiliary guide roller 241 is rotatably mounted between the two slide seats 244. The fixed pulley 245 is mounted on the frame 100. One end of the traction rope 246 is connected to the slide seat 244, and the other end of the traction rope 246 passes over the fixed pulley 245 and is connected to the counterweight 247.

[0026] Specifically, after long-term continuous operation, the outer conveyor belt 210 will become loose to a certain extent due to material fatigue and natural wear. At this time, the counterweight 247, relying on its own vertical gravity, continuously pulls the traction rope 246 downwards. The traction rope 246 drives the slide seat 244 installed on the slide rail 243, so that the slide seat 244 slides steadily and continuously away from the second auxiliary guide roller 242 along the guide direction of the slide rail 243. At the same time, the first auxiliary guide roller 241 connected to the slide seat 244 moves synchronously with the slide seat 244, continuously stretching and tightening the outer conveyor belt 210 outwards, effectively ensuring that the outer conveyor belt 210 always maintains appropriate tension during operation, avoiding problems such as slippage and unstable material conveying caused by belt loosening.

[0027] The inner side of the frame 100 is rotatably mounted with a third auxiliary guide roller 351 and a fourth auxiliary guide roller 352 corresponding to the position of the inner belt tensioning assembly 350. The inner belt tensioning assembly 350 includes a counterweight frame 353, which is slidably mounted on the inner side of the frame 100 in the vertical direction. A tensioning guide roller 354 is rotatably mounted on the inner side of the counterweight frame 353. The tensioning guide roller 354 is located below the center between the third auxiliary guide roller 351 and the fourth auxiliary guide roller 352. The inner conveyor belt 310 passes around the third auxiliary guide roller 351, the tensioning guide roller 354 and the fourth auxiliary guide roller 352 in sequence.

[0028] Specifically, when the inner conveyor belt 310 becomes loose and deformed due to long-term operation, the counterweight frame 353 installed on the frame 100 will slide down naturally along the vertical installation track by its own weight and the total weight of the tension guide roller 354, and simultaneously drive the tension guide roller 354 to move down, thereby continuously and stably applying a downward pushing force to the inner conveyor belt 310 to achieve effective belt tensioning; the entire tension adjustment process is automatically completed by gravity, without the need for regular manual intervention or adjustment by staff, fundamentally ensuring that the inner conveyor belt 310 can maintain a proper and stable tension under any working condition.

[0029] The outer belt assembly 200 also includes an outer belt drive assembly 220, which is mounted on the frame 100 and connected to the outer conveyor belt 210 for transmission. The outer belt drive assembly 220 includes an outer belt drive motor 221 and a first drive roller 223 mounted on the frame 100. The output end of the outer belt drive motor 221 is fixedly connected to the central shaft of the first drive roller 223 through a first reducer 222. The outer conveyor belt 210 passes around the first drive roller 223, and the first drive roller 223 drives the outer conveyor belt 210 to circulate through friction.

[0030] Specifically, the outer belt drive motor 221 drives the first active roller 223 to rotate at a constant speed through the first reducer 222. The first active roller 223 drives the entire outer conveyor belt 210 to continuously circulate along the conveying direction by means of the static friction between the first active roller 223 and the inner wall of the outer conveyor belt 210, providing stable conveying power for the outer conveyor belt 210 and ensuring that the outer conveyor belt 210 and the inner conveyor belt 310 keep running synchronously, avoiding the slippage and jamming of the bulk material in the clamping channel due to the large difference in their speeds.

[0031] The inner belt assembly 300 also includes an inner belt drive assembly 320, which is mounted on the frame 100 and connected to the inner conveyor belt 310. The inner belt drive assembly 320 includes an inner belt drive motor 321 and a second drive roller 323 mounted on the frame 100. The output end of the inner belt drive motor 321 is fixedly connected to the central shaft of the second drive roller 323 through a second reducer 322. The inner conveyor belt 310 passes around the second drive roller 323, and the second drive roller 323 drives the inner conveyor belt 310 to circulate through friction.

[0032] Specifically, the inner belt drive motor 321 drives the second active roller 323 to rotate at a constant speed through the second reducer 322. The second active roller 323 drives the inner conveyor belt 310 to continuously circulate along the conveying direction by means of the static friction between the inner wall of the inner conveyor belt 310 and the outer conveyor belt 210, and rotates at the same speed to stabilize the bulk material clamped between the two and move along the conveying path to ensure the smoothness of the conveying process.

[0033] The outer belt assembly 200 further includes an outer belt guide roller 230, a first pressing roller 250, and a second pressing roller 260. The outer belt guide roller 230, the first pressing roller 250, and the second pressing roller 260 are respectively mounted on the frame 100 and abut against different sections of the outer conveyor belt 210. Specifically, the first pressing roller 250 is positioned on the outer conveyor belt 210 near the first drive roller 223, enabling it to tightly press the outer conveyor belt 210 against the surface of the first drive roller 223, increasing the positive pressure between the outer conveyor belt 210 and the first drive roller 223. The pressure increases the maximum static friction between the two, preventing slippage and loss of rotation when the first drive roller 223 drives the outer conveyor belt 210. The second pressure roller 260 is set at the end face of the outer conveyor belt 210 away from the first drive roller 223, forming a horizontal receiving area on the surface of the outer conveyor belt 210. The outer belt guide roller 230 is arranged along the bending direction of the outer conveyor belt 210, which can cooperate with the arc conveying path to achieve stable guidance, prevent the outer conveyor belt 210 from shifting as a whole during operation, and ensure the stability of the conveying path.

[0034] The inner belt assembly 300 also includes an inner belt guide roller 330 and a third clamping roller 340. The inner belt guide roller 330 and the third clamping roller 340 are respectively mounted on the frame 100 and abut against different sections of the inner conveyor belt 310. Specifically, the third clamping roller 340 is positioned near the horizontal receiving area of ​​the inner conveyor belt 310, so that the inner conveyor belt 310 is close to the outer conveyor belt 210, forming a stable feeding clamping opening. After the loose material enters the receiving area, it can be smoothly clamped by the two belts. The inner belt guide roller 330 is arranged along the arc-shaped conveying direction of the inner conveyor belt 310, and works with the arc-shaped support assembly 400 to guide the inner conveyor belt 310, preventing the inner conveyor belt 310 from deviating during operation and ensuring the stability of the clamping channel.

[0035] Inside the frame 100, belt cleaning components 280 are provided at positions below the ends of the outer conveyor belt 210 and the inner conveyor belt 310. The belt cleaning components 280 include a side plate 281, a rib plate 282, a telescopic rod 283, a telescopic spring 284, a cross plate 285, and a rubber cleaning brush 286. The side plate 281 is fixed to the frame 100, the rib plate 282 is installed on the side of the side plate 281, the telescopic rod 283 passes through the rib plate 282, the telescopic spring 284 is sleeved on the telescopic rod 283, and a cross plate 285 is provided at the end of the telescopic rod 283. A rubber cleaning brush 286 is provided on the cross plate 285. The rubber cleaning brush 286 elastically abuts against the return surface of the conveyor belt. Under the pushing action of the telescopic spring 284, the rubber cleaning brush 286 always sticks to the return surface of the conveyor belt, scraping off and cleaning the residual loose material adhering to the surface of the conveyor belt.

[0036] Specifically, during the conveying process of the outer conveyor belt 210 and the inner conveyor belt 310, some loose material easily adheres to the surface of the outer conveyor belt 210 and the inner conveyor belt 310. After entering the return section, it cannot be detached by itself. Under the elastic pushing action of the telescopic spring 284, the rubber cleaning brush 286 continues to stick tightly to the return belt surface of the outer conveyor belt 210 and the inner conveyor belt 310. As the belts circulate, the residual loose material adhering to the belt surface of the outer conveyor belt 210 and the inner conveyor belt 310 is continuously scraped off.

[0037] This includes a hopper 101 located at the beginning of the bulk material conveying path, and a receiving hopper 102, a guide pipe 103, and a discharge hopper 104 located at the end of the bulk material conveying path. The horizontal area at the tail of the outer conveyor belt 210 is the receiving area. The hopper 101 is mounted on the frame 100, and the discharge port of the hopper 101 is located directly above the receiving area. Two symmetrical baffles 270 are provided on the inner side of the frame 100 corresponding to the receiving area. The baffles 270 limit and prevent the bulk material from moving. The receiving hopper 102 is installed on the frame 100 and is located below the discharge port of the clamping channel. An inclined guide pipe 103 is provided at the discharge port at the bottom of the receiving hopper 102. The discharge hopper 104 is installed on the outside of the frame 100 and is offset from the receiving hopper 102. The discharge hopper 104 is used to transport the bulk material to the shore. The receiving hopper 102 and the discharge hopper 104 are connected by the inclined guide pipe 103.

[0038] Specifically, after the bulk material falls from the hopper 101 into the receiving area below, the baffles 270 on both sides will block the scattered bulk material to prevent it from falling from the side, ensuring that all the bulk material enters the clamping channel between the outer conveyor belt 210 and the inner conveyor belt 310. When the bulk material is conveyed to the discharge port along the clamping channel, it will naturally fall into the receiving hopper 102 below, and then flow along the inclined guide pipe 103, eventually flowing into the outer discharge hopper 104, from which it is directly discharged into the transfer equipment on the shore. The entire material receiving and guiding process is closed and smooth.

[0039] Working principle: In use, the frame 100 is first fixedly installed inside the hold of the bulk carrier, relying on the original structure of the hold for positioning, without occupying additional external space; the device can adapt to the internal space of the hold, bending out a suitable conveying path through multiple sequentially arranged arc-shaped support components 400, making full use of the limited space inside the hold; after the device is started, the outer belt drive component 220 and the inner belt drive component 320 operate synchronously, respectively driving the outer conveyor belt 210 and the inner conveyor belt 310 to rotate at the same speed; after the bulk material falls from the hopper 101 to the receiving area, it smoothly enters the clamping channel between the two belts, is stably clamped and conveyed upward along the multiple arc-shaped channels; during the conveying process, the staggered support rollers 404 support the back of the outer conveyor belt 210 and the inner conveyor belt 310 respectively, which not only adapts to the curvature changes of the arc path, but also allows the two belts to adaptively adjust the spacing according to the particle size of the bulk material, ensuring the stability of clamping and conveying; When the belt becomes loose due to long-term operation, the gravity tensioning structure automatically adjusts the tension by relying on the counterweight, without manual intervention, and always maintains the belt tension to avoid slippage affecting the conveying. After the bulk material is conveyed to the end of the clamping channel, it automatically falls into the receiving hopper 102, flows into the discharge hopper 104 through the guide pipe 103, and is finally conveyed to the shore transfer equipment to complete the bulk material unloading operation. During the conveying process, the residual bulk material adhering to the belt surface during the return trip will be automatically scraped off by the rubber cleaning brush 286 of the belt cleaning component 280, preventing the residual bulk material from entering the device with the belt circulation and causing accumulation and blockage.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A belt conveyor of multi-segment arcuate configuration mounted within the hold of a bulk cargo carrying vessel, characterised in that, include: Frame (100); An outer belt assembly (200) and an inner belt assembly (300) are mounted on the frame (100). The outer belt assembly (200) includes an outer conveyor belt (210), and the inner belt assembly (300) includes an inner conveyor belt (310). The outer conveyor belt (210) and the inner conveyor belt (310) are arranged opposite to each other to form a clamping channel for clamping bulk materials. Multiple arc-shaped support components (400) are sequentially arranged on the frame (100) along the conveying path of bulk materials. Each arc-shaped support component (400) includes an arc-shaped support frame (402) and a support roller (404) mounted on the arc-shaped support frame (402). The support roller (404) is supported on the back of the outer conveyor belt (210) and the inner conveyor belt (310), respectively. The gravity tensioning structure includes an outer belt tensioning assembly (240) connected to the outer conveyor belt (210) and an inner belt tensioning assembly (350) connected to the inner conveyor belt (310).

2. A belt conveyor of the type having a plurality of arcuate sections as defined in claim 1, wherein: The arc-shaped support assembly (400) further includes a reinforcing frame (401) and a roller frame (403). The reinforcing frame (401) is fixed to the frame (100), the arc-shaped support frame (402) is installed on the reinforcing frame (401), the roller frame (403) is fixed to the arc-shaped surface of the arc-shaped support frame (402), and the support roller (404) is rotatably installed on the roller frame (403).

3. The belt conveyor device with a multi-segment arc-shaped structure according to claim 2, characterized in that: Of the two adjacent support rollers (404), one is used to support the back of the outer conveyor belt (210), and the other is used to support the back of the inner conveyor belt (310).

4. The belt conveyor device with a multi-segment arc-shaped structure according to claim 1, characterized in that: The frame (100) is rotatably mounted with a first auxiliary guide roller (241) and a second auxiliary guide roller (242) on the inner side corresponding to the position of the outer belt tensioning assembly (240). The outer conveyor belt (210) passes around the first auxiliary guide roller (241) and the second auxiliary guide roller (242) in sequence. The outer belt tensioning assembly (240) includes two parallel slide rails (243), a fixed pulley (245), a traction rope (246), and a counterweight (247). The two slide rails (243) are arranged on the frame (100), and a slide seat (244) is slidably mounted on the slide rails (243). The first auxiliary guide roller (241) is rotatably mounted between the two slide seats (244). The fixed pulley (245) is mounted on the frame (100). One end of the traction rope (246) is connected to the slide seat (244), and the other end of the traction rope (246) passes around the fixed pulley (245) and is connected to the counterweight (247).

5. The belt conveyor device with a multi-segment arc-shaped structure according to claim 1, characterized in that: The inner side of the frame (100) is rotatably mounted with a third auxiliary guide roller (351) and a fourth auxiliary guide roller (352) corresponding to the position of the inner belt tensioning assembly (350). The inner belt tensioning assembly (350) includes a counterweight frame (353), which is slidably mounted on the inner side of the frame (100) in the vertical direction. A tensioning guide roller (354) is rotatably mounted on the inner side of the counterweight frame (353). The tensioning guide roller (354) is located below the center between the third auxiliary guide roller (351) and the fourth auxiliary guide roller (352). The inner conveyor belt (310) passes around the third auxiliary guide roller (351), the tensioning guide roller (354) and the fourth auxiliary guide roller (352) in sequence.

6. The belt conveyor device with a multi-segment arc-shaped structure according to claim 1, characterized in that: The outer belt assembly (200) further includes an outer belt drive assembly (220), which is mounted on the frame (100) and is connected to the outer conveyor belt (210) for transmission. The outer belt drive assembly (220) includes an outer belt drive motor (221) and a first drive roller (223) mounted on the frame (100). The output end of the outer belt drive motor (221) is fixedly connected to the central axis of the first drive roller (223) through a first reducer (222). The outer conveyor belt (210) passes around the first drive roller (223), and the first drive roller (223) drives the outer conveyor belt (210) to circulate through friction.

7. The belt conveyor device with a multi-segment arc-shaped structure according to claim 1, characterized in that: The inner belt assembly (300) further includes an inner belt drive assembly (320), which is mounted on the frame (100) and is connected to the inner conveyor belt (310) for transmission. The inner belt drive assembly (320) includes an inner belt drive motor (321) and a second drive roller (323) mounted on the frame (100). The output end of the inner belt drive motor (321) is fixedly connected to the central axis of the second drive roller (323) through a second reducer (322). The inner conveyor belt (310) passes around the second drive roller (323), and the second drive roller (323) drives the inner conveyor belt (310) to circulate through friction.

8. The belt conveyor device with a multi-segment arc-shaped structure according to claim 1, characterized in that: The outer belt assembly (200) further includes an outer belt guide roller (230), a first pressing roller (250), and a second pressing roller (260). The outer belt guide roller (230), the first pressing roller (250), and the second pressing roller (260) are respectively mounted on the frame (100) and abut against different sections of the outer conveyor belt (210). The inner belt assembly (300) further includes an inner belt guide roller (330) and a third pressure roller (340), which are respectively mounted on the frame (100) and abut against different sections of the inner conveyor belt (310).

9. The belt conveyor device with a multi-segment arc-shaped structure according to claim 1, characterized in that: Inside the frame (100), belt cleaning components (280) are provided at positions below the ends of the outer conveyor belt (210) and the inner conveyor belt (310). The belt cleaning assembly (280) includes a side plate (281), a rib plate (282), a telescopic rod (283), a telescopic spring (284), a cross plate (285), and a rubber cleaning brush (286). The side plate (281) is fixed to the frame (100). The rib plate (282) is installed on the side of the side plate (281). The telescopic rod (283) passes through the rib plate (282). The telescopic spring (284) is sleeved on the telescopic rod (283). The end of the telescopic rod (283) is provided with a cross plate (285). The cross plate (285) is provided with a rubber cleaning brush (286). The rubber cleaning brush (286) elastically abuts against the return surface of the conveyor belt. Under the pushing action of the telescopic spring (284), the rubber cleaning brush (286) always sticks to the return surface of the conveyor belt, scraping off and cleaning the residual loose material adhering to the surface of the conveyor belt.

10. A belt conveyor with a multi-segment arc-shaped structure according to claim 1, characterized in that: It also includes a hopper (101) located at the beginning of the bulk material conveying path, and a receiving hopper (102), a guide pipe (103), and a discharge hopper (104) located at the end of the bulk material conveying path. The horizontal area at the tail of the external conveyor belt (210) is the receiving area. The hopper (101) is set on the frame (100), and the outlet of the hopper (101) is located directly above the receiving area. Two symmetrical baffles (270) are provided on the inner side of the frame (100) corresponding to the receiving area. The baffles (270) limit and block the loose material to prevent it from leaking out from the side of the receiving area. The receiving hopper (102) is disposed on the frame (100). The receiving hopper (102) is located below the discharge port of the clamping channel. An inclined guide pipe (103) is provided at the discharge port at the bottom of the receiving hopper (102). The discharge hopper (104) is located outside the frame (100). The discharge hopper (104) is offset from the receiving hopper (102). The discharge hopper (104) is used to transport bulk materials to the shore. The receiving hopper (102) and the discharge hopper (104) are connected by an inclined guide pipe (103).

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