Bulk material continuous unloading and automatic warehousing device and method

Abstract

The invention provides a device and method for continuous unloading and automatic warehousing of bulk materials. According to the device, an unloading platform is arranged outside a material distribution warehouse, and a plurality of unloading openings are formed in the unloading platform; the plurality of receiving bins are correspondingly arranged at the bottoms of the unloading openings; the conveying mechanism at least comprises a first conveying assembly arranged at the bottom of the material receiving bin, a lifting assembly is perpendicularly arranged at the end, in the length direction, of the first conveying assembly, and a material distributing assembly is arranged at the end, away from the first conveying assembly, of the lifting assembly and arranged at the top in the material distributing bin. Bulk materials in the material receiving bin can be conveyed to the material distributing assembly through the first conveying assembly and the lifting assembly, and the materials are distributed to any position of the material distributing bin through the material distributing assembly. The dumper can directly unload the bulk materials into the receiving bin through the unloading opening or unload the bulk materials on the unloading platform firstly, and then the bulk materials on the unloading platform are conveyed to the unloading opening to enter the receiving bin. And the flexibility and universality of raw material purchasing and unloading are improved.

Description

Technical Field

[0001] The present application relates to the technical field of float glass raw material storage, and in particular to a device and method for continuous unloading and automatic storage of bulk materials. Background Art

[0002] The silica sand used in float glass production arrives at the factory in different packaging methods such as bulk, ton bags and small bags. Due to geographical and traffic restrictions, most factories can only purchase silica sand in accordance with the principle of proximity (purchase within the province). Silica sand is transported by rear-end dump trucks. After the material arrives, the vehicle is unloaded directly into the silo, and then lifted to the homogenization silo by belt conveyors and bucket elevators.

[0003] Affected by market changes, raw materials are purchased nearby, and the purchasing method is single and fixed, which increases procurement costs. Silica sand transported across provinces cannot be transported by dump trucks and can only be transported in bulk by semi-trailers. After arriving at the factory, it is impossible to unload the materials directly into the silo due to the long body of the truck and the inability to unload itself. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a device and method for continuous unloading and automatic storage of bulk materials.

[0005] In a first aspect, the present application proposes a device for continuous unloading and automatic storage of bulk materials, comprising:

[0006] A material unloading platform, which is arranged outside the material distribution warehouse and is used to carry a material transport vehicle loaded with bulk materials, and has a plurality of material unloading openings on the material unloading platform;

[0007] A plurality of receiving bins, each of which is correspondingly arranged at the bottom of each of the discharge openings;

[0008] A transmission mechanism, the transmission mechanism at least comprises a first transmission component arranged at the bottom of the receiving bin, a lifting component is vertically arranged at one end of the first transmission component along the length direction, a material distribution component is arranged at one end of the lifting component away from the first transmission component, and the material distribution component is arranged at the top of the material distribution warehouse; the bulk material in the receiving bin can be transmitted to the material distribution component through the first transmission component and the lifting component, and the material is distributed to any position of the material distribution warehouse by the material distribution component;

[0009] The material transport vehicle can directly discharge the bulk materials into the receiving bin through the discharge opening, or first discharge the bulk materials onto the discharge platform and then transport the bulk materials on the discharge platform to the discharge opening and then into the receiving bin.

[0010] According to the technical solution provided in the embodiment of the present application, the receiving bin has a first discharge port connected to the bin body, and a first valve body located at the first discharge port, and the first valve body is used to switch the connection and isolation between the first discharge port and the outside world.

[0011] According to the technical solution provided in the embodiment of the present application, the first conveying assembly includes a first conveyor belt and a first driving element for driving the first conveyor belt to move along its length direction, and when the first discharge port is connected to the outside, the bulk material in the receiving bin falls onto the first conveying assembly;

[0012] The lifting assembly includes a hopper and a second driving element capable of driving the hopper to vertically lift and lower. When the hopper is placed at the end of the first conveyor belt along its length, the first conveyor belt conveys the bulk material toward the hopper side and naturally falls into the hopper.

[0013] The material distribution component includes a second conveying component and a material distribution trolley. The second conveying component includes a second conveyor belt and a second driving element for driving the second conveyor belt to move along its length direction. When the second driving element drives the hopper to rise to the second conveyor belt, the bulk material in the hopper is unloaded onto the second conveyor belt and is transferred into the material distribution trolley by the second conveyor belt.

[0014] According to the technical solution provided in the embodiment of the present application, the material distribution trolley is arranged in the middle position of the transmission path of the second conveyor belt, and the bottom of the material distribution trolley has a connecting component, and the connecting component has a first state and a second state. In the first state, the connecting component is naturally placed at the bottom of the second transmission belt. In the second state, the connecting component is lifted upward and lifts the second transmission belt at its corresponding position.

[0015] According to the technical solution provided in the embodiment of the present application, a steel grille is provided at each of the discharge openings.

[0016] According to the technical solution provided in the embodiment of the present application, a shoveling assembly that can move on the unloading platform is provided on the unloading platform, and the shoveling assembly can push the bulk material unloaded on the unloading platform into the unloading opening.

[0017] According to the technical solution provided in the embodiment of the present application, the unloading platform includes a tiltable plate and a fixed plate hinged to the tiltable plate, each of the unloading openings is arranged on the fixed plate, the tiltable plate has a unloading area, and a connecting channel is respectively provided between the unloading area and each of the unloading openings; the tiltable plate has a horizontal state and an inclined state, in the horizontal state, the tiltable plate and the fixed plate are in the same plane, and in the inclined state, the tiltable plate and the fixed plate have an angle greater than 90°; a third driving element is provided at the bottom of the tiltable plate, and the third driving element is used to drive the tiltable plate to switch between the horizontal state and the inclined state.

[0018] According to the technical solution provided in the embodiment of the present application, a plurality of pressure sensors are evenly arranged on the unloading area.

[0019] In a second aspect, the present application proposes a method for continuous unloading and automatic storage of bulk materials, which is implemented based on the device for continuous unloading and automatic storage of bulk materials as described above, and includes the following steps:

[0020] After receiving a signal indicating that the material transport vehicle has arrived at the unloading platform, obtaining the load capacity of the material transport vehicle and a first pressure corresponding to the load capacity;

[0021] Acquire the real-time pressure of the bulk material on the unloading area in real time, and if the rate of change of the real-time pressure remains unchanged within a first preset time period, obtain the current pressure;

[0022] If the absolute value of the difference between the current pressure and the first pressure is less than or equal to a first preset threshold, a first instruction is sent; the first instruction is used to instruct the material transport vehicle to leave the unloading platform;

[0023] According to the current pressure, obtaining a tilt parameter corresponding to the load, wherein the tilt parameter at least includes a tilt angle and a tilt speed;

[0024] After the material transport vehicle leaves the unloading platform, the tiltable plate is driven to tilt according to the tilt parameter, so that the bulk material in the unloading area flows into the unloading opening through the connecting channel, and then the bulk material is unloaded into the receiving bin.

[0025] According to the technical solution provided in the embodiment of the present application, the pressure sensor includes a static pressure sensor and a dynamic pressure sensor;

[0026] The real-time acquisition of the real-time pressure of the bulk material on the unloading area specifically includes the following steps:

[0027] Reading the static pressure reading of the static pressure sensor and the dynamic reading of the dynamic pressure sensor in real time;

[0028] If the dynamic pressure reading is greater than the static pressure reading at the same time, and the absolute value of the difference between the dynamic pressure reading and the static pressure reading is greater than or equal to a second preset threshold, a correction coefficient is obtained according to the static pressure reading and the dynamic pressure reading;

[0029] The product of the correction coefficient and the static pressure reading is taken as the real-time pressure at that moment.

[0030] Compared with the prior art, the beneficial effect of the present application is that the present application is provided with an unloading platform, and both dump trucks and semi-trailers can be driven directly to the unloading platform for unloading. For dump trucks, they can directly aim at the unloading opening to unload into the receiving bin. For semi-trailers, the driver opens the side of the vehicle and unloads the material onto the unloading platform first, and then evenly delivers the material on the unloading platform to the unloading opening. The silica sand enters the receiving bin under the action of gravity, which solves the problem that the semi-trailer cannot unload by itself and makes up for the deficiency of the semi-trailer's own unloading function. The device is located outside the silica sand homogenization bin and is not subject to the strict restrictions of the site and equipment in the traditional unloading method. This layout better adapts to the unloading needs of different types of vehicles, improves the flexibility and versatility of unloading, and also improves the flexibility of purchasing raw materials and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the side structure of a device for continuous unloading and automatic storage of bulk materials provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the front view of the structure of the device for continuous unloading and automatic storage of bulk materials provided in an embodiment of the present application;

[0033] Figure 3 A flow chart of the steps of a method for continuous unloading and automatic warehousing of bulk materials provided in an embodiment of the present application.

[0034] The text annotations in the figure represent:

[0035] 1. Unloading platform; 2. Material shoveling assembly; 3. Steel grille; 4. Receiving silo; 5. Silo wall vibrator; 6. Material dividing rod; 7. Material dividing gate; 8. First conveying assembly; 9. Lifting assembly; 10. Material distribution trolley; 11. Material distribution warehouse sand pool; 12. Second conveying assembly. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0037] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] Example 1

[0039] As mentioned in the background technology, in order to solve the problems in the prior art, this application proposes a device for continuous unloading and automatic storage of bulk materials, please refer to Figure 1 and Figure 2 As shown, including:

[0040] A material unloading platform 1, which is arranged outside the material distribution warehouse and is used to carry a material transport vehicle loaded with bulk materials. The material unloading platform 1 has a plurality of unloading openings;

[0041] A plurality of receiving bins 4, each of which is correspondingly arranged at the bottom of each of the discharge openings and is coaxially arranged with each of the discharge openings;

[0042] The transmission mechanism at least comprises a first transmission component 8 disposed at the bottom of the receiving bin 4, a lifting component 9 is vertically disposed at one end of the first transmission component 8 along the length direction, and a material distribution component is disposed at one end of the lifting component 9 away from the first transmission component 8, and the material distribution component is disposed at the top of the material distribution warehouse; the bulk material in the receiving bin 4 can be transmitted to the material distribution component through the first transmission component 8 and the lifting component 9, and the material is distributed to any position of the material distribution warehouse by the material distribution component;

[0043] The material transport vehicle can directly unload the bulk materials into the receiving bin 4 through the unloading opening, or first unload the bulk materials onto the unloading platform 1 and then transport the bulk materials on the unloading platform 1 to the unloading opening and then into the receiving bin 4.

[0044] Specifically, a silo wall vibrator 5 is also installed on the receiving silo 4. Figure 1 and 2 It can be clearly seen in the figure that the sand pool 11 of the material distribution warehouse is formed by the silica sand falling into the material distribution warehouse, wherein the material distribution warehouse is a homogenization warehouse in this usage scenario.

[0045] In a preferred embodiment, the receiving bin 4 has a first discharge port connected to the bin body, and a first valve body located at the first discharge port, and the first valve body is used to switch the connection and isolation between the first discharge port and the outside.

[0046] Specifically, a dividing rod 6 is provided below the first discharge port of the receiving bin 4 , and the first valve body is a dividing gate 7 . The dividing rod 6 and the dividing gate 7 are used to control the size of the material flow discharged to the first conveying assembly 8 .

[0047] In a preferred embodiment, the first conveying assembly 8 includes a first conveyor belt and a first driving element for driving the first conveyor belt to move along its length direction, and when the first discharge port is connected to the outside, the bulk material in the receiving bin 4 falls onto the first conveying assembly 8;

[0048] The lifting assembly 9 includes a hopper and a second driving element capable of driving the hopper to vertically lift and lower. When the hopper is placed at the end of the first conveyor belt along its length, the first conveyor belt conveys the bulk material toward the hopper side and naturally falls into the hopper.

[0049] Specifically, the second driving element is a bucket elevator, and the bucket is the bucket of the bucket elevator.

[0050] The material distribution component includes a second conveying component 12 and a material distribution cart 10. The second conveying component 12 includes a second conveyor belt and a third driving element for driving the second conveyor belt to move along its length direction. When the second driving element drives the hopper to rise to the second conveyor belt, the bulk material in the hopper is unloaded onto the second conveyor belt and is transferred into the material distribution cart 10 by the second conveyor belt.

[0051] In a preferred embodiment, the material distribution cart 10 is arranged in the middle position of the transmission path of the second conveyor belt, and the bottom of the material distribution cart 10 has a connecting component, and the connecting component has a first state and a second state. In the first state, the connecting component is naturally placed at the bottom of the second conveyor belt. In the second state, the connecting component is lifted upward and lifts the second conveyor belt at its corresponding position.

[0052] Specifically, the material distribution trolley 10 is arranged in the middle position of the transmission path of the second conveyor belt, so that the bulk material on the second conveyor belt can flow into the material distribution trolley 10 at any position. The connecting component can be a roller or a slide plate, and the connecting component is also connected to a hydraulic lifting device.

[0053] Specifically, the connecting assembly is arranged on the side of the cloth cart 10 close to the starting end of the second conveyor belt (wherein the second conveyor belt is composed of Figure 1The transmission from right to left described in the above means the transmission in the direction close to the material distribution warehouse, so the left end is the terminal end of the second conveyor belt and the right end is the starting end of the second conveyor belt). When the material distribution cart 10 needs to distribute materials into the material distribution warehouse, the connecting assembly is lifted by the hydraulic lifting device to lift up the second conveyor belt of the material distribution cart 10 close to the starting end side of the second conveyor belt to form a slope, and the bulk material on the second conveyor belt slides into the material distribution cart 10 through the ramp. The width of the material distribution cart 10 is greater than that of the second conveyor belt, and it spans the second conveyor belt in the width direction of the second conveyor belt, and discharges materials into the material distribution warehouse through two discharge pipes on both sides of the second conveyor belt.

[0054] Furthermore, in the process of the fabric trolley 10 lifting the second conveyor belt, as the inclination angle of the second conveyor belt changes and the gravity of the material, the contact part between the second conveyor belt and the bottom of the trolley may generate a certain amount of sliding friction. In the process of the trolley lifting the second conveyor belt, it is necessary to apply a certain amount of supporting force and lifting force to the second conveyor belt to change the position and angle of the second conveyor belt. This requires that there is a certain degree of stability and coordination between the second conveyor belt and the trolley, and they cannot slide completely without constraints. For example, under the action of the hydraulic lifting device, the contact part between the bottom structure of the trolley and the belt may slide in a controlled manner within a certain range to adapt to the belt lifting process and the flow of materials. At the same time, in order to ensure that the material can slide smoothly from the belt into the trolley, it may be necessary to perform special treatment on the contact surface between the belt and the trolley, such as adding an anti-slip coating or designing a suitable shape to reduce unnecessary sliding and ensure the stability of material transmission.

[0055] Furthermore, the material distribution trolley 10 has its own track and driving device. The track is arranged on the top of the material distribution warehouse. The driving device drives the material distribution trolley 10 to slide in the track, so as to achieve the purpose of distributing materials to any position on the ground of the material distribution warehouse.

[0056] In a preferred embodiment, each of the discharge openings is provided with a steel grid 3. The steel grid 3 is used to filter out larger impurities mixed into the bulk material.

[0057] In a preferred embodiment, the unloading platform 1 is provided with a shoveling assembly 2 which can move on the unloading platform 1 , and the shoveling assembly 2 can push the bulk material unloaded on the unloading platform 1 into the unloading opening.

[0058] Optionally, the shoveling assembly 2 is a forklift, which can flexibly push the bulk material on the discharge platform 1 into the discharge opening.

[0059] In a preferred embodiment, the unloading platform 1 includes a tiltable plate and a fixed plate hinged to the tiltable plate, each of the unloading openings is arranged on the fixed plate, the tiltable plate has a unloading area, and a connecting channel is respectively provided between the unloading area and each of the unloading openings; the tiltable plate has a horizontal state and an inclined state, in the horizontal state, the tiltable plate and the fixed plate are in the same plane, and in the inclined state, the tiltable plate and the fixed plate have an angle greater than 90° between them; a fourth driving element is provided at the bottom of the tiltable plate, and the fourth driving element is used to drive the tiltable plate to switch between the horizontal state and the inclined state.

[0060] Furthermore, the connecting channel is integrally formed with the tiltable plate, that is, a channel body with a certain depth is opened on one side of the tiltable plate, the opening of the connecting channel connecting the unloading area is the feed port, and the opening away from the unloading area is the discharge port, the discharge port points to the unloading opening, and the unloading opening is located on the side of the fixed plate close to the tiltable plate. In order that the bulk material can flow into the connecting channel more smoothly after the tiltable plate is tilted rather than into other areas of the tiltable plate except the connecting channel, the feed port can be set to a trumpet shape or a slope shape, and the width of the feed ports of all the connecting channels can completely cover the unloading area (when the unloading area is rectangular, the width of each feed port covers the length of the rectangle, and when the unloading area is circular, the width of each feed port covers the diameter of the circle).

[0061] Specifically, in the actual application of the unloading platform 1, the tiltable plate and the fixed plate together constitute the main structure of the unloading platform 1. A plurality of unloading openings are arranged on the fixed plate, and the unloading area on the tiltable plate is used to carry the bulk materials unloaded from the material transport vehicle. The connecting channel between the unloading area and each of the unloading openings ensures that the materials can flow smoothly to the unloading openings when the tiltable plate is tilted.

[0062] Optionally, the fourth driving element is a hydraulic cylinder. During the installation of the unloading platform 1, one end of the hydraulic cylinder is connected to a specific position at the bottom of the tiltable plate by a hinged manner, and the other end is connected to the ground. The number and position of the hydraulic cylinders are reasonably arranged according to the size and load-bearing capacity of the tiltable plate to ensure that the tiltable plate can move smoothly and reliably during the tilting process.

[0063] After the material transport vehicle unloads the bulk material into the unloading area of ​​the tiltable plate, the hydraulic cylinder is activated. The hydraulic cylinder begins to extend, pushing the tiltable plate to slowly rotate around the hinge point with the fixed plate. As the hydraulic cylinder continues to extend, the angle between the tiltable plate and the fixed plate gradually increases until it reaches a set tilting state greater than 90°. In this process, the bulk material in the unloading area flows along the connecting channel to the unloading opening on the fixed plate under the action of gravity, and further falls into the receiving bin 4.

[0064] When the unloading is completed, the hydraulic cylinder contracts, driving the tiltable plate to rotate in the opposite direction, gradually returning to a horizontal state, and being in the same plane with the fixed plate, so as to prepare for the next unloading.

[0065] During the entire operation, the stroke and speed of the hydraulic cylinder are precisely controlled to achieve smooth switching of the tiltable plate between the horizontal state and the tilted state, thereby ensuring efficient and safe unloading.

[0066] In a preferred embodiment, a plurality of pressure sensors are evenly arranged on the unloading area.

[0067] Example 2

[0068] Based on Example 1, this example proposes a method for continuous unloading and automatic storage of bulk materials, which is based on the device for continuous unloading and automatic storage of bulk materials as described above. This method is used in application scenarios such as semi-trailers that are long in size and cannot match traditional unloading systems. Please refer to Figure 3 As shown, the method comprises the following steps:

[0069] S1. After receiving a signal that the material transport vehicle has arrived at the unloading platform 1, obtaining the load capacity of the material transport vehicle and a first pressure corresponding to the load capacity;

[0070] Specifically, when the semi-trailer enters the unloading platform 1, the weight of the silica sand loaded by the material transport vehicle can be retrieved or inquired, and the first pressure can be obtained by conversion.

[0071] Furthermore, a mathematical model of the relationship between the weight of silica sand and the pressure of silica sand on the unloading platform is established in advance through experiments and mechanical analysis. Factors to be considered include the stacking form and distribution uniformity that affect the pressure. First, silica sand of a certain weight and a known stacking state is placed on an experimental platform with the same material and structure as the unloading platform, and the pressure on the experimental platform is measured. The experiment with different weights is repeated many times to obtain multiple sets of experimental data. The experimental data includes multiple sets of weights and the pressure corresponding to each set of weights, and then the functional relationship between pressure and weight is obtained based on the multiple sets of experimental data. After obtaining the weight of the silica sand loaded by the material transport vehicle this time, the corresponding first pressure can be obtained by calculating its functional relationship.

[0072] S2. Obtaining the real-time pressure of the bulk material on the unloading area in real time, and if the rate of change of the real-time pressure remains unchanged within a first preset time period, obtaining the current pressure;

[0073] Specifically, the material transport vehicle is parked on the tiltable plate except the unloading area, so the real-time pressure at each moment can be obtained by reading the average value of the multiple pressure sensors arranged in the unloading area at each moment; if the change rate of the real-time pressure remains unchanged within the first preset time, it means that the bulk material in the material transport vehicle has been unloaded, and all the silica sand has been poured into the unloading area of ​​the unloading platform 1. Exemplarily, the first preset time is 3s.

[0074] S3. If the absolute value of the difference between the current pressure and the first pressure is less than or equal to a first preset threshold, send a first instruction; the first instruction is used to instruct the material transport vehicle to leave the unloading platform 1;

[0075] If the absolute value of the difference between the current pressure and the first pressure is less than or equal to the first preset threshold, it means that the bulk material is not contaminated or lost during transportation. For example, the first preset threshold may be 10N.

[0076] S4. acquiring, according to the current pressure, a tilt parameter corresponding to the load, wherein the tilt parameter at least includes a tilt angle and a tilt speed;

[0077] Optionally, the tilt parameter is obtained through the current pressure by means of model training, the input of the model is the current pressure, and the output is the tilt parameter.

[0078] For example, a larger amount of material will produce a greater pressure on the unloading platform 1. In order to ensure that the material can smoothly pass through the unloading port and fall into the receiving bin 4, the inclination angle needs to be appropriately increased. In this way, gravity can be used to make the material flow more smoothly. When the amount of material reaches a certain proportion (such as 70%) of the maximum load capacity of the unloading platform 1, the inclination angle may need to be increased to a certain value (such as 30° to the horizontal direction) to ensure that the material will not accumulate on the platform and block the unloading port.

[0079] However, the inclination angle cannot be too large, because too large an angle may cause the material to flow too fast, causing impact on the receiving silo 4 and subsequent transmission equipment, and may even cause material splashing, causing safety hazards and material losses.

[0080] Smaller material amounts exert less pressure on the unloading platform 1, and the inclination angle can be appropriately reduced. This can ensure smooth material flow and reduce wear and tear on equipment and energy consumption. For example, when the material amount is small (such as only 20% of the maximum load capacity of the unloading platform 1), the inclination angle can be adjusted to about 15° from the horizontal direction.

[0081] Generally speaking, it is not advisable to use too fast a tilting speed when the amount of material is large. Because rapid tilting may cause the material to instantly generate a large impact force, causing damage to the equipment and structure. For example, when the amount of material is large, the tilting speed can be controlled at a slower level (such as 5° to 10° per minute) to ensure that the material flows smoothly to the discharge port. At the same time, the slower tilting speed also helps the operator to better control the unloading process and adjust the tilting angle and speed in time to adapt to different material amounts and working conditions. When the amount of material is small, the tilting speed can be appropriately increased. Due to the small amount of material, the impact force generated is relatively small, and a faster tilting speed can improve the unloading efficiency and shorten the unloading time. When the amount of material is small, the tilting speed can be increased to 15° to 20° per minute, but the tilting speed should not be too fast to avoid causing material splashing or unnecessary vibration to the equipment.

[0082] S5. After the material transport vehicle leaves the unloading platform 1, the tilting parameter is used to drive the tiltable plate to tilt, so that the bulk material in the unloading area flows into the unloading opening through the connecting channel, and then the bulk material is unloaded into the receiving bin 4.

[0083] In a preferred embodiment, the pressure sensor includes a static pressure sensor and a dynamic pressure sensor;

[0084] The real-time acquisition of the real-time pressure of the bulk material on the unloading area specifically includes the following steps:

[0085] The static pressure reading of the static pressure sensor and the dynamic reading of the dynamic pressure sensor are read in real time; specifically, if the fluidity of the bulk material is poor, the static pressure reading of the static pressure sensor can be directly used as the real-time pressure, and when the fluidity of the bulk material is good, it will affect the magnitude of the downward pressure during the unloading process of the material transport vehicle, so the following method is selected to obtain the real-time pressure of the static downward pressure.

[0086] If the dynamic pressure reading is greater than the static pressure reading at the same time, and the absolute value of the difference between the dynamic pressure reading and the static pressure reading is greater than or equal to a second preset threshold, a correction coefficient is obtained according to the static pressure reading and the dynamic pressure reading;

[0087] The product of the correction coefficient and the static pressure reading is taken as the real-time pressure at that moment.

[0088] For example, the pressure value measured by the static pressure sensor in a static state is P1, while the average pressure value monitored by the dynamic pressure sensor when the material is flowing is P2. If P2 is significantly greater than P1, it means that the material flow has generated a large dynamic pressure, and the result of the static pressure sensor needs to be corrected. The correction factor can be calculated as P2 / P1, and then the subsequent measurement results of the static pressure sensor are multiplied by the correction factor to obtain a pressure value closer to the actual situation.

[0089] By combining a dynamic pressure sensor with a static pressure sensor, the effect of fluidity differences on pressure measurement can be effectively considered, thereby improving the accuracy and reliability of pressure measurement. The silica sand in this embodiment has good fluidity, and this method can be used to improve the accuracy of pressure monitoring, thereby improving control accuracy.

[0090] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A device for continuous unloading and automatic storage of bulk materials, characterized in that: include: A material unloading platform (1), the material unloading platform (1) being arranged outside the material distribution warehouse and used for carrying a material transport vehicle loaded with bulk materials, the material unloading platform (1) being provided with a plurality of material unloading openings; A plurality of receiving bins (4), each receiving bin (4) being correspondingly arranged at the bottom of each of the discharge openings; A transmission mechanism, the transmission mechanism at least comprising a first transmission component (8) arranged at the bottom of the receiving bin (4), a lifting component (9) vertically arranged at one end of the first transmission component (8) along the length direction, a material distribution component arranged at one end of the lifting component (9) away from the first transmission component (8), and the material distribution component arranged at the top of the material distribution warehouse; the bulk material in the receiving bin (4) can be transmitted to the material distribution component through the first transmission component (8) and the lifting component (9), and the material is distributed to any position of the material distribution warehouse by the material distribution component; The material transport vehicle can directly discharge the bulk material into the receiving bin (4) through the discharge opening, or first discharge the bulk material onto the discharge platform (1), and then transport the bulk material on the discharge platform (1) to the discharge opening and then into the receiving bin (4).

2. The device for continuous unloading and automatic storage of bulk materials according to claim 1 is characterized in that: The receiving bin (4) has a first discharge port connected to the bin body, and a first valve body located at the first discharge port, wherein the first valve body is used to switch the connection and isolation between the first discharge port and the outside.

3. The device for continuous unloading and automatic storage of bulk materials according to claim 2 is characterized in that: The first conveying assembly (8) comprises a first conveying belt and a first driving element for driving the first conveying belt to move along its length direction, and when the first discharge port is connected to the outside, the bulk material in the receiving bin (4) falls onto the first conveying assembly (8); The lifting assembly (9) comprises a hopper and a second driving element capable of driving the hopper to vertically lift and lower. When the hopper is placed at the end of the first conveyor belt along its length, the first conveyor belt conveys the bulk material toward the hopper side and naturally falls into the hopper. The material distribution component includes a second conveying component (12) and a material distribution trolley (10), wherein the second conveying component (12) includes a second conveyor belt and a second driving element for driving the second conveyor belt to move along its length direction. When the second driving element drives the hopper to rise to the second conveyor belt, the bulk material in the hopper is unloaded onto the second conveyor belt and is transferred into the material distribution trolley (10) by the second conveyor belt.

4. The device for continuous unloading and automatic storage of bulk materials according to claim 3 is characterized by: The material distribution trolley (10) is arranged at the middle position of the transmission path of the second conveyor belt, and a connecting component is provided at the bottom of the material distribution trolley (10), and the connecting component has a first state and a second state. In the first state, the connecting component is naturally placed at the bottom of the second conveyor belt, and in the second state, the connecting component is lifted upward and lifts the second conveyor belt at the corresponding position.

5. The device for continuous unloading and automatic storage of bulk materials according to claim 1 is characterized in that: A steel grille (3) is provided at each of the discharge openings.

6. The device for continuous unloading and automatic storage of bulk materials according to claim 1 is characterized in that: The unloading platform (1) is provided with a shoveling assembly (2) which can move on the unloading platform (1), and the shoveling assembly (2) can push the bulk material unloaded on the unloading platform (1) into the unloading opening.

7. The device for continuous unloading and automatic storage of bulk materials according to claim 1 is characterized in that: The unloading platform (1) comprises a tiltable plate and a fixed plate hinged to the tiltable plate, each of the unloading openings is arranged on the fixed plate, the tiltable plate has a unloading area, and a connecting channel is respectively provided between the unloading area and each of the unloading openings; the tiltable plate has a horizontal state and an inclined state, in the horizontal state, the tiltable plate and the fixed plate are in the same plane, in the inclined state, the tiltable plate and the fixed plate have an angle greater than 90°; a third driving element is provided at the bottom of the tiltable plate, and the third driving element is used to drive the tiltable plate to switch between the horizontal state and the inclined state.

8. The device for continuous unloading and automatic storage of bulk materials according to claim 7 is characterized in that: A plurality of pressure sensors are evenly arranged on the unloading area.

9. A method for continuous unloading and automatic storage of bulk materials, implemented based on the device for continuous unloading and automatic storage of bulk materials as claimed in claim 8, characterized in that: The following steps are involved: After receiving a signal indicating that the material transport vehicle has arrived at the unloading platform (1), obtaining the load capacity of the material transport vehicle and a first pressure corresponding to the load capacity; Acquire the real-time pressure of the bulk material on the unloading area in real time, and if the rate of change of the real-time pressure remains unchanged within a first preset time period, obtain the current pressure; If the absolute value of the difference between the current pressure and the first pressure is less than or equal to a first preset threshold, a first instruction is sent; the first instruction is used to instruct the material transport vehicle to leave the unloading platform (1); According to the current pressure, obtaining a tilt parameter corresponding to the load, wherein the tilt parameter includes at least a tilt angle and a tilt speed; After the material transport vehicle leaves the unloading platform (1), the tilting parameter is used to drive the tiltable plate to tilt, so that the bulk material in the unloading area flows into the unloading opening through the connecting channel, and then the bulk material is unloaded into the receiving bin (4).

10. The method for continuous unloading and automatic storage of bulk materials according to claim 8, characterized in that: The pressure sensor includes a static pressure sensor and a dynamic pressure sensor; The real-time acquisition of the real-time pressure of the bulk material on the unloading area specifically includes the following steps: Reading the static pressure reading of the static pressure sensor and the dynamic reading of the dynamic pressure sensor in real time; If the dynamic pressure reading is greater than the static pressure reading at the same time, and the absolute value of the difference between the dynamic pressure reading and the static pressure reading is greater than or equal to a second preset threshold, a correction coefficient is obtained according to the static pressure reading and the dynamic pressure reading; The product of the correction coefficient and the static pressure reading is taken as the real-time pressure at that moment.

Images