A conveying device suitable for port bulk cargo loading and unloading

Abstract

The application discloses a conveying device suitable for port bulk cargo loading and unloading, and relates to the technical field of conveying devices, which comprises a rack, a conveying belt and a hollow arc-shaped plate fixed on the rack, a plurality of blowholes are uniformly arranged on the upper surface of the hollow arc-shaped plate along the length direction of the hollow arc-shaped plate, a blocking mechanism is arranged on the hollow arc-shaped plate, the blocking mechanism comprises two long pipes which are embeddedly arranged in the hollow arc-shaped plate, a long hole is arranged in the long pipe, a soft telescopic long pipe is arranged in the long hole, and the soft telescopic long pipe is used for inflating and stretching the soft telescopic long pipe so that the top of the soft telescopic long pipe is in contact with the bottom of the conveying belt in a suspended state; through the blocking mechanism, the soft telescopic long pipe which is inflated and stretched is adaptively attached to the bottom surface of the suspended conveying belt, a continuous flexible material blocking barrier is formed, bulk cargo particles can be effectively prevented from falling from the front or back edge of the conveying belt, and the blowholes are prevented from being blocked by the material falling into the gap between the conveying belt and the hollow arc-shaped plate.

Description

Technical Field

[0001] This invention belongs to the field of conveying equipment technology, specifically a conveying equipment suitable for loading and unloading bulk cargo in ports. Background Technology

[0002] Port bulk cargo handling operations mainly involve the continuous transfer of unpackaged bulk solid materials such as grain, ore, coal, and fertilizer. Belt conveyor equipment is the core equipment in the port bulk cargo transfer system. Among them, the air cushion belt conveyor utilizes the air chamber structure inside a hollow arc plate to supply air. Airflow is injected upward through blowholes in the hollow arc plate, forming a uniform static pressure air film at the bottom of the conveyor belt, causing the entire conveyor belt to suspend and run. Compared with traditional idler roller conveyors, it has advantages such as low operating resistance and low energy consumption, and is now widely used in continuous loading and unloading scenarios for bulk cargo in ports.

[0003] In the existing technology, bulk materials are small and highly fluid, and are prone to falling outward from the outer edge of the conveyor belt during the conveying process. The fallen material will fall directly into the gap between the conveyor belt and the hollow arc plate. Since the hollow arc plate adopts an arc structure, the fallen particles are prone to slide and accumulate at the blowhole position, causing blowhole blockage and poor ventilation. Blowhole blockage will destroy the local air film uniformity, resulting in a decrease in the suspension effect of the conveyor belt at the corresponding position and uneven suspension height. Meanwhile, the conveyor belt relies on air film suspension support. Under the influence of working conditions such as instantaneous flow fluctuations of materials in the port, uneven loading of incoming materials, and long-distance operation of equipment, the suspended conveyor belt is prone to lateral deviation and deviation, causing the material conveying to be skewed. To address this, we propose a conveying equipment suitable for bulk cargo loading and unloading in ports. Summary of the Invention

[0004] The purpose of this invention is to provide a conveying device suitable for loading and unloading bulk cargo in ports, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a conveying device suitable for loading and unloading bulk cargo in ports, comprising a frame, a conveyor belt, and a hollow arc-shaped plate fixed on the frame. The upper surface of the hollow arc-shaped plate has a plurality of blowholes evenly distributed along its length. A blocking mechanism is provided on the hollow arc-shaped plate, the blocking mechanism comprising: Two long pipes are embedded inside the hollow arc plate. The long pipes have long holes inside, and flexible telescopic tubes are installed inside the long holes. The flexible telescopic tubes are inflated and extended so that the top of the flexible telescopic tubes adaptively contacts the bottom of the suspended conveyor belt. The outer surface of the flexible telescopic tube is provided with multiple exhaust holes evenly distributed along the length of the flexible telescopic tube, which can blow out the material falling on the arc surface of the hollow arc plate. The hollow arc-shaped plate has two long grooves inside.

[0006] Preferably, a first pipe is fixedly installed inside the long pipe.

[0007] Preferably, a first connecting pipe is fixedly installed at one end of the long pipe.

[0008] Preferably, the hollow arc plate is further provided with a correction component for correcting the deviation of the conveyor belt in a suspended state; The correction component includes a second pipe fixed inside the long pipe. Multiple inclined pipes are evenly arranged on the surface of the second pipe along its length, which are used to blow a large flow of air onto the surface of the conveyor belt to move the conveyor belt and correct its alignment. The upper surface of the hollow arc plate has multiple holes and grooves evenly distributed along its length.

[0009] Preferably, a solenoid valve is installed on the inclined tube to control the amount of gas discharged from the inclined tube.

[0010] Preferably, multiple uprights are evenly arranged on the top of the hollow arc plate and along the length of the hollow arc plate. Laser displacement sensors are embedded in the surface of the uprights to monitor the displacement of the conveyor belt at different positions on the hollow arc plate in a suspended state in segments.

[0011] Preferably, a second connecting pipe is fixedly installed at one end of the second pipe.

[0012] Preferably, the hollow arc-shaped plate has multiple support pillars fixedly installed inside, and an air inlet is opened at one end of the hollow arc-shaped plate.

[0013] Preferably, rollers are rotatably mounted at both ends of the frame, and the conveyor belt is fitted onto the two rollers.

[0014] Preferably, a geared motor is fixedly mounted on the back of one end of the frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) Through the blocking mechanism, the flexible telescopic tube that is inflated and extended adaptively abuts against the bottom surface of the suspended conveyor belt to form a continuous flexible material blocking barrier, which can effectively prevent bulk particles from falling from the front or back edge of the conveyor belt, thus preventing materials from falling into the gap between the conveyor belt and the hollow arc plate and clogging the blowhole, ensuring that the air film is uniform and stable. The exhaust holes on the outside of the flexible telescopic tube can simultaneously spray air to blow away the accumulated material on the arc plate surface, maintain the cleanliness of the arc surface in the hollow arc plate, and further reduce the risk of blowhole clogging. The flexible contact of the soft material will not wear down the conveyor belt or damage the suspended air film, and is compatible with the low resistance operation characteristics of the air cushion conveyor.

[0016] (2) By using the correction component, multiple laser displacement sensors are arranged to monitor the lateral offset of the suspended conveyor belt in real time in segments. The air flow rate of the inclined tube in the corresponding section is precisely controlled by the solenoid valve. The directional pneumatic thrust pushes the offset conveyor belt to be smoothly reset and centered, realizing segmented dynamic non-contact correction. This avoids the problem of wear on the conveyor belt in the traditional contact correction structure and does not damage the stability of the bearing air film. It works in conjunction with the blocking mechanism to realize segmented dynamic non-contact correction while blocking and protecting the conveyor belt during the material conveying process. It simultaneously ensures the centering accuracy of the conveyor belt and the stability of the air film, effectively improving the continuous operation reliability and overall service life of the port bulk cargo conveying equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a bottom-view structural diagram of the present invention; Figure 3 This is a schematic diagram of the right-side cross-sectional structure of the conveyor belt of the present invention; Figure 4 This is a schematic diagram of the hollow arc-shaped plate structure from the right side; Figure 5 This is a schematic cross-sectional view of the hollow arc-shaped plate of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the long tube of the present invention; Figure 7 This is a schematic diagram of the support structure of the present invention; Figure 8 This is a schematic diagram of the long tube and inclined tube structure of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the long tube of the present invention; Figure 10 This is a partial structural diagram of the flexible telescopic tube of the present invention; In the diagram: 100, frame; 101, roller; 102, conveyor belt; 103, hollow arc plate; 104, air inlet; 105, blowhole; 106, support column; 200, long trough; 201, long pipe; 203, flexible telescopic long pipe; 204, first pipe; 205, first connecting pipe; 206, exhaust port; 300, upright frame; 301, slot; 302, laser displacement sensor; 303, inclined pipe; 304, second pipe; 305, second connecting pipe. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Please see Figures 1-10 This invention provides a technical solution: a conveying device suitable for loading and unloading bulk cargo in ports, wherein materials are loaded from the left end of a conveyor belt 102 and unloaded from the right end, including a frame 100, a conveyor belt 102, and a hollow arc-shaped plate 103 fixed on the frame 100. The conveyor belt 102 above the hollow arc-shaped plate 103 has an arc-shaped structure. Multiple blowholes 105 are evenly distributed on the upper surface of the hollow arc-shaped plate 103 along its length. After an external air source supplies air into the hollow arc-shaped plate 103, the airflow is ejected upwards through the arranged blowholes 105, forming a static pressure air film at the bottom of the conveyor belt 102, causing the conveyor belt 102 to suspend above the hollow arc-shaped plate 103, achieving low-resistance conveying. A blocking mechanism is provided on the hollow arc-shaped plate 103, the blocking mechanism including: Two long pipes 201 are embedded inside the hollow arc plate 103. The long pipes 201 have long holes inside, and flexible telescopic tubes 203 are installed inside the long holes. After the flexible telescopic tubes 203 are inflated and extended, their tops contact the bottom surface of the conveyor belt 102. This can not only provide a blocking and protection effect, but also prevent wear on the surface of the conveyor belt 102. The flexible telescopic tubes 203 are inflated and extended so that their tops can adaptively contact the suspended conveyor belt 102. When gas is introduced into the long pipe 201, the airflow enters the flexible telescopic long pipe 203, causing it to inflate and extend. The top of the flexible telescopic long pipe 203 extends upward along the long groove 200, adaptively abutting against the bottom surface of the suspended conveyor belt 102. This forms a flexible material barrier on the front and back of the conveyor belt 102, preventing loose particles on the conveyor belt 102 from falling outward and avoiding material from falling into the gap between the conveyor belt 102 and the hollow arc plate 103 and clogging the blowhole 105. At the same time, part of the airflow in the flexible telescopic long pipe 203 is ejected outward through the exhaust hole 206, blowing and cleaning the material particles that have fallen onto the arc surface of the hollow arc plate 103 outward, maintaining the cleanliness of the arc surface and ensuring the stability of the air film. The long groove 200 provides guidance and limit for the extension and retraction of the flexible telescopic long pipe 203, ensuring that the extension direction is accurately aligned with the bottom of the conveyor belt 102 and preventing deviation during the extension and retraction process. Multiple exhaust holes 206 are evenly provided on the outer surface of the flexible telescopic tube 203 along its length, which can blow out the material falling on the arc surface of the hollow arc plate 103. The hollow arc plate 103 has two long grooves 200 inside, and the top of the flexible telescopic tube 203 is located inside the long grooves 200.

[0020] Example 2 Please refer to Example 1. Figures 1-10 The long pipe 201 has a first pipe 204 fixedly installed inside it, and the top of the first pipe 204 is connected and fixed to the bottom of the flexible telescopic long pipe 203. One end of the long pipe 201 is fixedly provided with a first connecting pipe 205, and the end of the first connecting pipe 205 extends to the outside of the hollow arc plate 103. The first connecting pipe 205 and the second connecting pipe 305 are both connected to the external first centrifugal fan to provide wind support; the air inlet 104 is connected to the external second centrifugal fan that provides wind power.

[0021] Example 3 Please refer to Example 2. Figure 1 , Figures 3-10 The hollow arc plate 103 is also equipped with a correction component, which is used to correct the conveyor belt 102 that is in a suspended state. The frame 100 is also equipped with a controller. The conveyor belt 102 above the hollow arc plate 103 is suspended by airflow. When the suspended conveyor belt 102 shifts laterally, or when the top of the flexible telescopic tube 203 abuts against the bottom surface of the conveyor belt 102, causing the conveyor belt 102 to shift locally towards the front / back of the hollow arc plate 103, the laser displacement sensor 302 of the corresponding section collects the lateral displacement data of the conveyor belt 102 in real time and transmits the monitoring signal to the controller. After the controller calculates and analyzes the displacement signal, it outputs a control command to the solenoid valve of the inclined tube 303 corresponding to the sensor section. The solenoid valve precisely adjusts the air flow of the inclined tube 303 according to the offset of the conveyor belt 102. The directional jet airflow from the inclined tube 303 acts on the bottom of the conveyor belt 102 to complete the correction adjustment. If a section of the conveyor belt 102 shifts towards the hollow arc plate 103, the laser displacement sensor 302 collects the lateral displacement data of the conveyor belt 102 in real time and transmits the monitoring signal to the controller. After the controller calculates and analyzes the displacement signal, it outputs a control command to the solenoid valve of the inclined tube 303 corresponding to the sensor section. The solenoid valve precisely adjusts the airflow of the inclined tube 303 according to the offset of the conveyor belt 102. The inclined tube 303 directs the airflow to the bottom of the conveyor belt 102 to complete the correction adjustment. If the back of plate 103 shifts, the controller opens the solenoid valve of the inclined tube 303 on the back of that section, and the inclined tube 303 sprays airflow towards the front, pushing the shifted section of conveyor belt 102 back to the center position. Conversely, when the section of conveyor belt 102 shifts towards the front, the controller controls the solenoid valve of the inclined tube 303 on the front to supply air, blowing airflow towards the back to push the conveyor belt 102 back to the center. This structure can individually implement pneumatic correction for any one or more shifted sections of the conveyor belt 102. Sections without shift do not require air blowing adjustment. It achieves segmented dynamic non-contact correction while blocking and protecting the material conveyed by the conveyor belt 102. The suspended air film between the conveyor belt 102 and the hollow arc plate 103 is not damaged throughout the process, avoiding the wear of the conveyor belt 102 by the traditional contact correction structure and ensuring the stability of bulk material conveying. The correction component includes a second pipe 304 fixed inside the long pipe 201. Multiple inclined pipes 303 are evenly arranged on the surface of the second pipe 304 and along the length of the second pipe 304, which are used to blow a large flow of air onto the surface of the conveyor belt 102 to make it move and correct its alignment. The upper surface of the hollow arc plate 103 has a plurality of holes and grooves 301 evenly distributed along the length of the hollow arc plate 103; The end of the inclined tube 303 can extend into the interior of the slot 301; An electromagnetic valve is installed on the inclined tube 303 to control the amount of gas discharged from the inclined tube 303. The electromagnetic valve can control the opening and closing degree of the valve through electrical signals, and precisely adjust the air flow and injection pressure of a single inclined tube 303, thereby adjusting the magnitude of the corrective thrust on the conveyor belt 102.

[0022] Example 4 Please refer to Example 3. Figures 1-7 Multiple uprights 300 are evenly arranged on the top of the hollow arc plate 103 and along its length. Laser displacement sensors 302 are embedded in the surface of the uprights 300 to monitor the displacement of the conveyor belt 102 in different positions on the hollow arc plate 103 when it is suspended. During monitoring, the laser displacement sensor 302 is aligned with the front or back edge of the conveyor belt 102. The laser emitted from inside hits the front or back edge of the conveyor belt 102 and causes diffuse reflection. The reflected light is transmitted back to the photosensitive element inside the laser displacement sensor 302 to achieve monitoring. Multiple laser displacement sensors 302 can collect the lateral displacement data of the corresponding section of the conveyor belt 102 in segments, monitor the degree of deviation and specific position of the conveyor belt 102 in real time when it is suspended, provide accurate position data support for segmented correction, achieve accurate positioning of the deviation position, and avoid energy waste caused by uniform adjustment of the entire line.

[0023] In this embodiment, a second connecting pipe 305 is fixedly provided at one end of the second pipe 304, and the end of the second connecting pipe 305 extends to the outer surface of the hollow arc plate 103.

[0024] In this embodiment, multiple support columns 106 are fixedly installed inside the hollow arc plate 103, and an air inlet 104 is opened at one end of the hollow arc plate 103. The multiple support columns 106 are evenly fixed inside the hollow arc plate 103 to improve the overall structural strength of the hollow arc plate 103.

[0025] In this embodiment, rollers 101 are rotatably mounted at both ends of the frame 100, and the conveyor belt 102 is fitted onto the two rollers 101.

[0026] In this embodiment, a geared motor is fixedly installed on the back side of one end of the frame 100, and the working end of the geared motor is fixedly connected to the end of the roller 101. The geared motor is installed on the back side of the right end of the frame 100.

[0027] Working principle and usage process of this invention: When the device is in use, after the device is started, the external second centrifugal fan supplies air into the hollow arc plate 103 through the air inlet 104. The airflow is sprayed upward through the evenly arranged blow holes 105, forming a continuous and uniform static pressure air film at the bottom of the conveyor belt 102, which lifts and suspends the entire conveyor belt 102. The geared motor at the end of the frame 100 drives the drum 101 to rotate at a uniform speed. The drum 101 drives the tensioned conveyor belt 102 to circulate with low resistance, realizing the continuous conveying of bulk materials. The first connecting pipe 205 supplies gas to the first pipeline 204. The airflow fills the flexible telescopic tube 203, causing it to extend upward along the long groove 200. The top of the tube adaptively abuts against the bottom surface of the suspended conveyor belt 102, forming two flexible material barriers at the bottom of the conveyor belt 102. These barriers prevent loose particles on the conveyor belt 102 from falling outward and avoid material falling into the gap and clogging the blowhole 105. At the same time, part of the airflow in the flexible telescopic tube 203 is ejected outward through the exhaust hole 206 on the top surface of the flexible telescopic tube 203, blowing away a small amount of material that falls on the arc surface of the hollow arc plate 103, keeping the arc surface clean, and ensuring the stability of the air film. During the conveying process, laser displacement sensors 302 on each upright 300 monitor the lateral position of the conveyor belt 102 in real time. When a section of the conveyor belt 102 shifts laterally, the laser displacement sensor 302 transmits the displacement signal to the controller. After calculation, the controller outputs a control signal to the solenoid valve on the inclined tube 303 of the corresponding section, precisely adjusting the valve opening. A large flow of air is delivered to the second pipe 304 through the second connecting pipe 305. The large flow of air passes through the inclined tube 303 and then is ejected obliquely, applying a reverse lateral thrust to the shifted conveyor belt 102, smoothly pushing it back to the center position, thus achieving segmented dynamic non-contact correction. Sections without shifting remain closed or in a low-pressure state to reduce energy consumption. Ultimately, during bulk cargo loading and unloading operations at the port, the equipment simultaneously achieves low-resistance air cushion conveying, flexible material blocking and anti-blocking, and segmented pneumatic correction functions, ensuring continuous, stable, and low-loss conveying of bulk cargo.

[0028] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A conveying device suitable for loading and unloading bulk cargo in a port, comprising a frame, a conveyor belt, and a hollow arc-shaped plate fixed to the frame, wherein a plurality of blowholes are uniformly formed on the upper surface of the hollow arc-shaped plate along its length, and a blocking mechanism is provided on the hollow arc-shaped plate, characterized in that, The blocking mechanism includes: Two long pipes are embedded inside the hollow arc plate. The long pipes have long holes inside, and flexible telescopic tubes are installed inside the long holes. The flexible telescopic tubes are inflated and extended so that the top of the flexible telescopic tubes adaptively contacts the bottom of the suspended conveyor belt. The outer surface of the flexible telescopic tube is provided with multiple exhaust holes evenly distributed along the length of the flexible telescopic tube, which can blow out the material falling on the arc surface of the hollow arc plate. The hollow arc-shaped plate has two long grooves inside.

2. The conveying equipment suitable for loading and unloading bulk cargo in ports according to claim 1, characterized in that, The first pipe is fixedly installed inside the long pipe.

3. A conveying device suitable for loading and unloading bulk cargo in ports according to claim 1, characterized in that, A first connecting pipe is fixedly installed at one end of the long pipe.

4. A conveying device suitable for loading and unloading bulk cargo in ports according to claim 1, characterized in that, The hollow arc plate is also equipped with a correction component for correcting the deviation of the conveyor belt when it is suspended in the air. The correction component includes a second pipe fixed inside the long pipe. Multiple inclined pipes are evenly arranged on the surface of the second pipe along its length, which are used to blow a large flow of air onto the surface of the conveyor belt to move the conveyor belt and correct its alignment. The upper surface of the hollow arc plate has multiple holes and grooves evenly distributed along its length.

5. A conveying device suitable for loading and unloading bulk cargo in ports according to claim 4, characterized in that, A solenoid valve is installed on the inclined tube to control the amount of gas discharged from the inclined tube.

6. A conveying device suitable for loading and unloading bulk cargo in ports according to claim 1, characterized in that, Multiple uprights are evenly arranged on the top of the hollow arc-shaped plate and along its length. Laser displacement sensors are embedded in the surface of the uprights to monitor the displacement of the conveyor belt at different positions on the hollow arc-shaped plate in a suspended state in segments.

7. A conveying device suitable for loading and unloading bulk cargo in ports according to claim 4, characterized in that, A second connecting pipe is fixedly installed at one end of the second pipe.

8. A conveying device suitable for loading and unloading bulk cargo in ports according to claim 1, characterized in that, The hollow arc-shaped plate has multiple support pillars fixedly installed inside, and an air inlet is opened at one end of the hollow arc-shaped plate.

9. A conveying device suitable for loading and unloading bulk cargo in ports according to claim 1, characterized in that, Rollers are rotatably mounted at both ends of the frame, and the conveyor belt is fitted onto the two rollers.

10. A conveying device suitable for loading and unloading bulk cargo in ports according to claim 1, characterized in that, A geared motor is fixedly installed on the back of one end of the frame.

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