A dynamic continuous loading station and method for non - continuously accumulating bulk grain

Abstract

The present invention relates to a dynamic continuous loading station and method for discontinuous cumulative bulk grain, including: obtaining static information of train carriages; obtaining dynamic information of train carriages; calculating the loading amount of the current carriage; weighing for the first time; weighing for the second time and starting to unload; weighing for the third time; weighing for the fourth time; and completing the loading. The present invention uses a bulk grain scale with a relatively small volume to complete the rated loading of the materials in a single carriage through multiple weighings and continuous loading. During the entire loading process, the train runs continuously without stopping, ensuring dynamic continuous loading while conducting four quantitative weighings, realizing the integration of weighing, transportation, warehousing, and settlement. Due to the relatively small volume of the bulk grain scale and the buffer hopper in the present invention, the height of the entire loading station is significantly reduced, saving the construction cost. It can also be connected with large grain depots to form an integrated system of warehousing, quantitative loading, and transportation, reducing the labor intensity, improving the loading efficiency of bulk grain, and avoiding the uneven loading of grain that causes partial load conditions.

Description

Technical Field

[0001] The present invention relates to a dynamic continuous loading station and method for discontinuous cumulative bulk grain, which is an automated mechanical transportation equipment and method, and is an equipment and method for automatically loading bulk goods onto trains. Background Art

[0002] In the port bulk grain railway transportation system, bulk grain is mainly transported by railway through special port grain cars. The train quantitative continuous loading station is a key technical equipment. The train carriage for bulk grain is a relatively special carriage. This kind of train carriage called a grain hopper car is provided with four grain unloading ports at the bottom for the need of rapid unloading. To cooperate with these four unloading ports, the carriage is designed into four areas similar to funnel shapes, that is, the carriage is designed into four areas, and these four areas can be separated by baffles or not. Only at the position near the unloading port at the bottom of the carriage does the separated structural feature appear. To adapt to the automatic loading of this kind of special grain carriage with four unloading ports at the bottom, the existing automatic grain loading system usually adopts a static loading method with four chutes. That is, after the loading carriage enters the loading position, it needs to stop and be in a static state. At this time, the four chutes of the loading system simultaneously drop into the four areas in the carriage, and then unload grain into the carriage at the same time. After reaching the loading volume, the four chutes are simultaneously retracted, and then the train starts, allowing the next carriage to reach the loading position and stop for the next loading cycle after being stable.

[0003] In terms of the loading time alone, this loading method has a very fast loading speed because four chutes load simultaneously. The problem is that a train is an object with a relatively large mass itself and has a large inertia. It is not an easy thing to stop accurately and stably, which poses relatively high requirements for the train driver. Once the train runs beyond the loading position, the train must reverse back. Each forward and backward movement needs to consider the misalignment caused by the train's inertia. Therefore, for an unskilled train driver, one or two forward and backward calibrations may be required for each carriage, which will consume a large amount of auxiliary time. Even for a skilled train driver, one or two forward and backward calibrations may be required for loading a train. In any case, each carriage requires a start and stop, and the time cost is huge, which is itself a big problem. Therefore, how to realize the dynamic continuous loading of bulk grain in this stop - start loading form and improve the loading efficiency is a problem that needs to be solved.

[0004] In addition, the existing loading system with four chutes loading simultaneously requires a relatively large weighing bin to meet the need of unloading with four chutes simultaneously. Therefore, the bin capacity of the existing automatic grain loading system needs to reach 1.2 times that of the train carriage, and the equipment structure size is relatively large, which greatly increases the equipment manufacturing cost. Summary of the Invention

[0005] To overcome the problems of the prior art, the present invention provides a dynamic continuous loading station and method for discontinuous cumulative bulk grain. The loading station and method achieve continuous, rapid, and accurate weighing of bulk grain and full-process automatic control, enabling the train to run continuously at a low speed through the loading station for continuous loading, eliminating the process of starting and stopping each carriage, and greatly improving the loading efficiency.

[0006] The object of the present invention is achieved as follows: A dynamic continuous loading station for discontinuous cumulative bulk grain, comprising: a steel structure frame, characterized in that the steel structure frame is sequentially provided with a bulk grain scale injection gate with an opening sensor, a bulk grain scale with a capacity less than 1 / 3 of the loading amount of a single carriage, a buffer funnel with a capacity less than 3 / 4 of the loading amount of a single carriage, and a loading chute from top to bottom; a bulk grain scale discharge gate is provided at the bottom of the bulk grain scale, and a buffer funnel gate with an opening sensor is provided at the bottom of the buffer funnel; a carriage type identification sensor and a vehicle speed sensor are provided on the steel structure frame, a weighing sensor is provided on the bulk grain scale, and a chute position monitoring sensor is provided on the loading chute; the bulk grain scale injection gate and its opening sensor, the bulk grain scale discharge gate, the buffer funnel gate and its opening sensor, the weighing sensor, the carriage type identification sensor, the vehicle speed sensor, and the chute position monitoring sensor are electrically connected to the controller.

[0007] Further, a buffer bin and a material conveying device are further provided above the bulk grain scale injection gate.

[0008] Further, the upper part of the bulk grain scale injection gate is the discharge port of a large grain depot.

[0009] Further, the chute is a telescopic chute that can be telescoped up and down.

[0010] Further, the controller is provided with a loading information summary module, a report generation module, and a printing module.

[0011] A dynamic continuous loading method for discontinuous cumulative bulk grain using the above system, the method comprising the following steps:

[0012] Step 1, obtaining static information of train carriages: Obtain relevant parameters including the type, position, shape, loading amount of each carriage of the train, and the distance between each carriage, input the relevant parameters into the controller, and complete the reception and storage of the parameters of each carriage of the train;

[0013] Step 2, obtaining dynamic information of train carriages: Obtain the current running speed and current carriage type of the train through the carriage type identification sensor, and obtain the loading amount of the current carriage according to the position and carriage type;

[0014] Step 3, calculate the loading quantity of the current carriage: Based on the loading quantity of the current carriage, set the average loading quantity of the four weighings of the bulk grain scale, and then adjust the planned loading quantity of each area according to the sizes of the four areas of the current loading carriage.

[0015] Step 4, the first weighing: Open the injection gate of the bulk grain scale according to the calculated weighing quantity of the first area of the current carriage, inject the bulk grain into the bulk grain scale, and adjust the injection quantity and injection speed through the opening sensor of the injection gate of the bulk grain scale during this period until the planned bulk grain quantity of the first area is reached, then close the injection gate of the bulk grain scale, and then open the discharge gate of the bulk grain scale to discharge the bulk grain after the first weighing into the buffer funnel.

[0016] Step 5, the second weighing and start discharging: Open the injection gate of the bulk grain scale according to the calculated weighing quantity of the second area of the current carriage, inject the bulk grain into the bulk grain scale, and adjust the injection quantity and injection speed through the opening sensor of the injection gate of the bulk grain scale during this period until the planned bulk grain quantity of the second area is reached, then close the injection gate of the bulk grain scale, and then open the discharge gate of the bulk grain scale to discharge the bulk grain after the second weighing into the buffer funnel; during the second weighing process, lower the chute pipe and open the buffer funnel gate to pour the bulk grain in the buffer funnel into the carriage through the chute pipe.

[0017] Step 6, the third weighing: Open the injection gate of the bulk grain scale according to the calculated weighing quantity of the third area of the current carriage, inject the bulk grain into the bulk grain scale, and adjust the injection quantity and injection speed through the opening sensor of the injection gate of the bulk grain scale during this period until the planned bulk grain quantity of the third area is reached, then close the injection gate of the bulk grain scale, and then open the discharge gate of the bulk grain scale to discharge the bulk grain after the third weighing into the buffer funnel; during the third weighing process, keep the buffer funnel gate open and pour the bulk grain in the buffer funnel into the carriage through the chute pipe.

[0018] Step 7, the fourth weighing: Open the injection gate of the bulk grain scale according to the calculated weighing quantity of the fourth area of the current carriage, inject the bulk grain into the bulk grain scale, and adjust the injection quantity and injection speed through the opening sensor of the injection gate of the bulk grain scale during this period until the planned bulk grain quantity of the fourth area is reached, then close the injection gate of the bulk grain scale, and then open the discharge gate of the bulk grain scale to discharge the bulk grain after the fourth weighing into the buffer funnel. After the fourth weighing of the bulk grain, return to Step 3 to prepare for the loading quantity of the next carriage; during the fourth weighing process, keep the buffer funnel gate open and pour the bulk grain in the buffer funnel into the carriage through the chute pipe.

[0019] Step 8, Loading completed: All the bulk grain in the buffer hopper has been emptied. Close the gate of the buffer hopper, raise the chute, complete the loading of the fourth area of the current carriage, and return to Step 5 to prepare for the loading of the next carriage. During the entire unloading process, the chute position monitoring sensor continuously detects the distance between the bottom of the carriage or the surface of the material pile and the lip of the chute. The controller adjusts the lifting of the chute according to the distance detected by the chute position monitoring sensor to maintain an appropriate distance between the lip of the chute and the bottom of the carriage or the surface of the material pile. The appropriate distance mentioned here is approximately between 0.5 - 2.5 meters, which is determined according to different grain varieties and the possible generated dust.

[0020] After the loading of the entire train is completed, the controller summarizes the loading information, prints the list, and generates a report.

[0021] The above 8-step loading process is the loading process of a single carriage. The continuous cycle forms the loading process of the entire train. During the loading period, the train keeps moving forward without stopping, and the entire data acquisition, calculation, and loading process are carried out continuously.

[0022] The advantages and beneficial effects of the present invention are as follows: The present invention uses a smaller weighing bin and completes the rated loading of the materials for a single carriage by means of multiple weighings and continuous loading. During the entire loading process, the train runs continuously without stopping. While conducting four quantitative weighings, it ensures dynamic continuous loading, realizing the integration of weighing, transportation, warehousing, and settlement. The present invention uses a bulk grain scale with a smaller volume and completes the rated loading of the materials for a single carriage by means of multiple weighings and continuous loading. During the entire loading process, the train runs continuously without stopping. While conducting four quantitative weighings, it ensures dynamic continuous loading, realizing the integration of weighing, transportation, warehousing, and settlement. Due to the smaller volume of the bulk grain scale and the buffer hopper in the present invention, the height of the entire loading station is significantly reduced, greatly saving the construction cost of the steel structure frame. It can also be connected with large grain warehouses to form an integrated system of warehousing, quantitative loading, and transportation. The present invention can also realize the mixed loading operation of different bulk grain vehicle models, emergency stop and jump-off in case of failure, monitoring function, automatic input of loading information, automatic weighing, automatic loading, automatic list printing, and automatic generation of a complete report function, reducing the labor intensity, greatly improving the loading efficiency of bulk grain, and at the same time avoiding the uneven loading of grain and the resulting offloading situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the drawings and embodiments.

[0024] Figure 1 is a schematic structural diagram of the system according to Embodiment 1 of the present invention;

[0025] Figure 2 is a schematic block diagram of the principle of the system according to Embodiment 1 of the present invention;

[0026] Figure 3It is the flowchart of the method described in the fourth embodiment of the present invention;

[0027] Figure 4 It is the operation timing diagram of the bulk grain scale, buffer hopper and chute pipe of the method described in the fourth embodiment of the present invention. Detailed implementation manners

[0028] Embodiment 1:

[0029] This embodiment is a dynamic continuous loading station for non - continuously - accumulated bulk grain, as Figure 1 , 2 shown. This embodiment includes: a steel structure frame 1, on which a bulk grain scale injection gate 2 with an opening sensor, a bulk grain scale 3 with a capacity less than 1 / 3 of the loading capacity of a single carriage, a buffer hopper 4 with a capacity less than 3 / 4 of the loading capacity of a single carriage, and a loading chute pipe 5 are arranged in sequence from top to bottom. A bulk grain scale discharge gate 301 is provided at the bottom of the bulk grain scale, and a buffer hopper gate 401 with an opening sensor is provided at the bottom of the buffer hopper. A carriage model identification sensor 101 and a vehicle speed sensor 102 are provided on the steel structure frame, a weighing sensor 302 is provided on the bulk grain scale, and a chute pipe position monitoring sensor 501 is provided on the loading chute pipe, as Figure 1 shown. The bulk grain scale injection gate and its opening sensor, the bulk grain scale discharge gate, the buffer hopper gate and its opening sensor, the weighing sensor, the carriage model identification sensor, the vehicle speed sensor, the chute pipe and its chute pipe position monitoring sensor are electrically connected to a controller, as Figure 2 shown.

[0030] The special grain carriage 01 (as Figure 1 shown) is different from an ordinary freight car carriage. The carriage is loaded with grain from the top. When unloading, the vehicle stops on a special line with a grain - receiving pit, and the funnel - shaped grain outlet at the bottom of the carriage is opened. The bulk grain flows out by its own weight. Since the interior of the carriage is set to be inclined or curved, the grain can be basically emptied by itself. The special grain carriage generally has four grain outlets, which can shorten the unloading time and has better performance. The four grain outlets divide the carriage into four parts. Due to the different shapes of the bottom grain outlets and the slope of the carriage wall, the volumes of the four parts are not exactly the same. When loading grain, if the traditional rapid quantitative loading station for trains uses single - bin single - weighing, it cannot ensure uniform loading of the grain in the four parts of the carriage, which will lead to the occurrence of partial load. At the same time, single - weighing will result in a relatively large volume of the weighing bin, which cannot meet the structural requirements of the grain train distribution system. Therefore, it is necessary to study a new loading method for the special requirements of bulk grain loading.

[0031] The solution of this embodiment is to propose a process and dynamic bin distribution technology for multiple metering and non - continuous cumulative dynamic continuous loading. The non - continuous cumulative dynamic continuous bulk grain loading station is a measuring instrument integrating weighing, transportation, warehousing, and settlement. It uses PLC, human - machine interface, and field - bus technology to continuously, quickly, and accurately weigh bulk bulk materials and automate the whole process control, reducing the technological links, lightening the labor intensity, and greatly improving the loading efficiency.

[0032] The non - continuous cumulative dynamic continuous bulk grain loading station uses a small weighing bin. A carriage is weighed and loaded four times, which greatly reduces the volume of the weighing bin. An equal - amount bulk grain buffer funnel is installed above the chute pipe to ensure continuous loading, saving the loading time and improving the loading efficiency. The system mainly consists of a buffer bin, modular small bulk grain scales, equal - amount bulk grain buffer funnels, loading chute pipes, etc., to meet the dynamic continuous quantitative loading of different types of grain special vehicles. After the bulk grain carriage runs into place, the loading station calculates the lowering height of the loading telescopic pipe according to relevant parameters such as vehicle type, grain variety, bulk density, load capacity, etc. After the telescopic pipe automatically descends to the set height, the gate is opened to start the grain loading operation, and the vehicle does not need to stop during the loading process. The four - time weighing divides the goods into four parts, which is equivalent to evenly dispersing the tendency of the material in the carriage, and this can also effectively avoid partial load, obtaining an additional benefit.

[0033] The volume of the bulk grain scale is set to be less than 1 / 3 of the loading volume of a single carriage, where the loading volume of the single carriage is the capacity of the largest existing grain hopper car. For example, if the capacity of the largest existing grain hopper car is 70 tons, it can be calculated according to a capacity of 70 tons. Similarly, the capacity of the buffer hopper is set to be less than 3 / 4 of the loading volume of a single carriage based on the same principle.

[0034] Due to the good fluidity of grain, the bulk grain scale can adopt a square or circular barrel body, and a funnel - shaped discharge port is provided at the bottom. Since the weighing capacity is small (less than 20 - ton capacity), its height is also low.

[0035] As the name implies, the buffer funnel is in the shape of a funnel to facilitate the sliding of bulk grain.

[0036] The bulk grain input device 02 (see Figure 1 ) above the bulk grain scale can have two forms: A buffer bin can be set up to inject bulk grain into the bulk grain scale through the buffer bin. A belt conveyor can be set at the top of the buffer bin to input bulk grain into the buffer bin through the belt conveyor. Or a buffer bin can be not set up, but the inlet of the bulk grain scale is connected to the bottom discharge port of the large grain depot to directly obtain bulk grain from the grain depot. In this way, this embodiment becomes a weighing and automatic loading link between the grain depot and the transport train.

[0037] Since the overall height of the bulk grain scale, buffer funnel, and chute in the system described in this embodiment is relatively low, this system can be installed under an already built large-scale bulk grain warehouse to form a complete automated bulk grain storage and transportation system with the trains on the rails, including bulk grain storage - quantitative automatic loading - transportation.

[0038] The chute is a telescopic chute, and a swing chute can also be used to adapt to the loading of different bulk grains.

[0039] The controller can be an industrial PC or other electronic device capable of digital processing, calculation and storage. The controller collects various information obtained by various sensors. The controller controls the extension and retraction of each gate and slide pipe through hydraulic and PLC devices.

[0040] Embodiment 2:

[0041] This embodiment is an improvement of the first embodiment and a refinement of the bulk grain input device of the first embodiment. A buffer bin and a material conveying device are also provided above the bulk grain weighing injection gate described in this embodiment.

[0042] This embodiment is similar to a traditional loading station, that is, a buffer bin is set above the quantitative bin (a bulk grain scale in this embodiment) to store a large amount of bulk grain for loading, and the bulk grain in the buffer bin comes from a belt conveyor, which transports the bulk grain on the ground into the buffer bin.

[0043] In this embodiment, the bulk grain injection gate is the discharge gate of the buffer bin.

[0044] Embodiment three:

[0045] This embodiment is an improvement of the above embodiment and a refinement of the bulk grain input device of the above embodiment. The bulk grain described in this embodiment has a discharge port of a large grain depot above the injection gate.

[0046] A large grain depot is a cylindrical side-by-side structure that is more than a dozen stories high. Bulk grain enters the depot from the top, and the bottom is a discharge port. Below the discharge port is a bulk grain train passage with tracks laid. The device in this embodiment is installed below the discharge port of the grain depot to achieve automatic weighing and continuous loading.

[0047] The bulk grain scale injection gate can be installed on the grain depot discharge port to directly control the discharge port.

[0048] Embodiment 4:

[0049] This embodiment is an improvement of the above embodiment and a refinement of the slide pipe of the above embodiment. The slide pipe described in this embodiment is a telescopic slide pipe that can be telescoped up and down.

[0050] The advantage of the telescopic chute is that the material can fall at a high speed. For bulk grain with good fluidity, using a telescopic chute can speed up the loading of the material into the vehicle.

[0051] Example Five:

[0052] This example is an improvement of the above example and a refinement of the controller in the above example. The controller described in this example is provided with a loading information summary module, a report generation module, and a printing module.

[0053] The summary and report of the loading data are very important loading records, especially important for highly commercialized automated machinery and equipment such as automated loading stations.

[0054] Example Six:

[0055] This example uses the dynamic continuous loading method for non - continuously accumulated bulk grain in the system described in the above example. The flowchart of the method is as Figure 3 shown.

[0056] The solution to the continuous loading of the grain hopper car in this example is as follows:

[0057] Adopt the dynamic continuous loading method for non - continuously accumulated bulk grain, that is, complete the rated weighing of the materials in a single carriage by means of multiple metering and cumulative weighing, and ensure dynamic continuous loading while determining the weight. Form a set of non - continuously accumulated rapid quantitative loading methods for dynamic loading of bulk grain applicable to port grain special vehicles.

[0058] The method can meet various bulk grain vehicle models, including but not limited to the following models: L18 model with a load capacity of 60 tons, L70 model with a load capacity of 69 tons, L17K type (capable of non - continuous operation) bulk grain special vehicle with a load capacity of 60 tons, etc. It can realize mixed loading operations for different vehicle models, emergency stop and jump - off in case of faults, monitoring functions, automatic input of loading information, automatic weighing, automatic loading, automatic list printing, and automatic generation of complete report functions.

[0059] The specific steps of the method described in this example are as follows, and the flowchart is as Figure 3 shown:

[0060] Step 1, obtain the static information of the train carriages: Obtain relevant parameters including the model, position, shape, loading capacity of each carriage of the train, and the distance between each carriage, and input the relevant parameters into the controller to complete the reception and storage of the parameters of each train carriage.

[0061] The characteristic of a funnel - shaped grain carriage is that there are some differences in the sizes of the four regions. Therefore, it is necessary to adjust the loading capacity of each region according to the differences in each region, rather than evenly distributing the loading capacity of each region.

[0062] Step 2, obtain the dynamic information of the train carriage: Obtain the current train running speed and the current carriage model through the carriage model identification sensor, and obtain the loading capacity of the current carriage based on the position and the carriage model.

[0063] The position information here is mainly the ranking of the current carriage in the whole train. By identifying the model and ranking of the carriage entering the loading position, it can be judged whether the current carriage entering the loading position is consistent with the carriage planned for loading. If it is consistent, it means it is correct; if it is not consistent, skip the current carriage. After this carriage passes, load the next carriage. The purpose of this discrimination is to avoid loading the wrong carriage, resulting in too large or too small a loading capacity.

[0064] Step 3, calculate the loading capacity of the current carriage: According to the loading capacity of the current carriage, set the average loading capacity of the four weighings of the bulk grain scale, and then adjust the planned loading capacity of each area according to the sizes of the four areas of the current loading carriage.

[0065] According to the characteristics of the grain hopper car, in this embodiment, the loading amount of one carriage is weighed four times. Although there are some differences in the loading amounts of the four areas of the carriage, generally they are the same. Therefore, first calculate the average of the loads in the four areas, that is, calculate approximately how much to weigh each time, so as not to weigh blindly. Then, according to the known carriage model, obtain various parameters such as the capacity of the carriage, and then determine the accurate loading amount of each area according to the different sizes of each area.

[0066] Step 4, the first weighing: Open the injection gate of the bulk grain scale according to the calculated weighing amount of the first area of the current carriage, inject the bulk grain into the bulk grain scale, and adjust the injection amount and injection speed through the opening sensor of the injection gate of the bulk grain scale during this period until the planned bulk grain amount of the first area is reached. Then close the injection gate of the bulk grain scale, and then open the discharge gate of the bulk grain scale to unload the bulk grain after the first weighing into the buffer funnel.

[0067] At this time, the carriage to be loaded has not reached the loading position yet, and the chute has not been lowered. During the weighing process, the weighing sensor monitors the quantity injected into the bulk grain scale. Once the weighing amount is reached, the injection of the bulk grain stops. When the injected bulk grain reaches the planned amount, stop injecting the bulk grain into the bulk grain scale and at the same time open the discharge gate of the bulk grain scale to pour the bulk grain in the bulk grain scale into the buffer funnel.

[0068] Step 5, Second weighing and start of discharging: Open the bulk grain scale injection gate according to the calculated weighing amount of the second area of the current carriage, inject bulk grain into the bulk grain scale, and adjust the injection amount and injection speed through the opening sensor of the bulk grain scale injection gate during this period until the planned bulk grain amount of the second area is reached. Then close the bulk grain scale injection gate, and then open the bulk grain scale discharge gate to discharge the bulk grain after the second weighing into the buffer hopper; during the second weighing process, lower the chute pipe and open the buffer hopper gate to pour the bulk grain in the buffer hopper into the carriage through the chute pipe.

[0069] At the start of this step, the carriage is already close to the loading position. When the weighing process (the process of injecting bulk grain) is nearly half completed, the carriage enters the loading position. At this time, the chute pipe should be lowered and the buffer hopper gate should be opened to start pouring the bulk grain in the buffer hopper into the carriage.

[0070] Step 6, Third weighing: Open the bulk grain scale injection gate according to the calculated weighing amount of the third area of the current carriage, inject bulk grain into the bulk grain scale, and adjust the injection amount and injection speed through the opening sensor of the bulk grain scale injection gate during this period until the planned bulk grain amount of the third area is reached. Then close the bulk grain scale injection gate, and then open the bulk grain scale discharge gate to discharge the bulk grain after the third weighing into the buffer hopper. During the third weighing process, the buffer hopper gate remains open to pour the bulk grain in the buffer hopper into the carriage through the chute pipe.

[0071] This step is for the third weighing of the material. During the entire weighing process, the buffer hopper is continuously discharging and does not stop.

[0072] Step 7, Fourth weighing: Open the bulk grain scale injection gate according to the calculated weighing amount of the fourth area of the current carriage, inject bulk grain into the bulk grain scale, and adjust the injection amount and injection speed through the opening sensor of the bulk grain scale injection gate during this period until the planned bulk grain amount of the fourth area is reached. Then close the bulk grain scale injection gate, and then open the bulk grain scale discharge gate to discharge the bulk grain after the fourth weighing into the buffer hopper. After the fourth weighing of the bulk grain, return to Step 3 to prepare for the loading amount of the next carriage; during the fourth weighing process, the buffer hopper gate remains open to pour the bulk grain in the buffer hopper into the carriage through the chute pipe.

[0073] This step is the weighing process for the last area of the current carriage. After the weighing of the loading amount of this area is completed, it is necessary to return to Step 4 to weigh the loading amount of the first area of the next carriage. At this time, there is still bulk grain in the current carriage in the buffer hopper and it continues to pour into the current carriage.

[0074] Step 8, Loading completed: After all the bulk grain in the buffer hopper has been poured out, close the buffer hopper gate and raise the chute to complete the loading of the fourth area of the current carriage, and return to Step 5 to prepare to start loading the next carriage.

[0075] During the entire discharging process, the chute position monitoring sensor continuously detects the distance between the bottom of the carriage or the surface of the material pile and the lip of the chute. The controller adjusts the lifting of the chute according to the distance detected by the chute position monitoring sensor, so as to maintain an appropriate distance between the lip of the chute and the bottom of the carriage or the surface of the material pile.

[0076] The appropriate distance mentioned here is approximately between 0.5 - 2.5 meters, which is determined according to different grain varieties and the possible generated dust.

[0077] After the entire train loading is completed, the controller summarizes the loading information, prints a list and generates a report.

[0078] The loading process of the above 8 steps is the loading process of a single carriage. This process continuously cycles to form the loading process of the entire train. During loading, the train keeps moving forward without stopping, and the entire data acquisition, operation, and loading process proceed continuously.

[0079] The operation process of bulk grain loading is uniformly controlled by the controller. For each carriage, 4 weighings and 4 loadings are carried out respectively. The action timing diagrams of the bulk grain scale, buffer hopper, and chute are as Figure 4 shown. Among them, C11 - C14 in the first row represent the operation timing of the bulk grain scale of the first carriage, C21 - C24 represent the operation timing of the bulk grain scale of the second carriage, Cn1 - Cn4 represent the operation timing of the bulk grain scale of the last carriage, and the ellipsis in the middle represents the operation timing of the bulk grain scales of other carriages. The second and third rows respectively represent the action timing of the buffer hopper and the chute.

[0080] From Figure 4 it can be seen that the process of discharging the buffer hopper lags behind the weighing process of the bulk grain scale for the first plus second half of the time. Using the time after that, the bulk grain scale is weighed in four times, which not only meets the characteristics of the grain hopper car being loaded in four areas, but also avoids possible partial loading during loading. The greatest advantage is that since it is weighed 4 times, a bulk grain scale and a buffer hopper with a smaller volume can be used, greatly reducing the overall height of the loading station. The advantage of reducing the overall height of the loading station is that the loading station can be directly connected below the existing grain depot, enabling the loading station and the grain depot to form an integrated system for grain storage, weighing, and loading, reducing intermediate links such as belt conveying between the storage granary and the loading station, and reducing the loading cost.

[0081] When the train is composed of carriages of different models and the height between carriages of different models changes, the controller will adjust the loading quantity of each partition according to the different models of carriages, control the lifting of the chute according to the shape of the carriage during loading, and real - time adjust the downward - probing height of the loading chute, so that the outlet of the loading chute is closest to the carriage inlet as much as possible to match the height of different types of carriages and achieve continuous loading during the operation of the bulk grain car.

[0082] Finally, it should be noted that the above is only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred arrangement, those of ordinary skill in the art should understand that the technical solution of the present invention (such as the overall structural form, the forms of various gates and chambers, the sequence of steps, etc.) can be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A dynamic continuous loading method for non - continuously accumulated bulk grain, and the loading station used in the method includes: Steel structure frame, on which a bulk grain scale injection gate with an opening sensor, a bulk grain scale with a capacity less than 1 / 3 of the loading capacity of a single carriage, a buffer hopper with a capacity less than 3 / 4 of the loading capacity of a single carriage, and a loading chute are arranged in sequence from top to bottom; a bulk grain scale discharge gate is arranged at the bottom of the bulk grain scale, and a buffer hopper gate with an opening sensor is arranged at the bottom of the buffer hopper; a carriage model identification sensor and a vehicle speed sensor are arranged on the steel structure frame, a weighing sensor is arranged on the bulk grain scale, and a chute position monitoring sensor is arranged on the loading chute; the bulk grain scale injection gate and its opening sensor, the bulk grain scale discharge gate, the buffer hopper gate and its opening sensor, the weighing sensor, the carriage model identification sensor, the vehicle speed sensor, and the chute position monitoring sensor are electrically connected to a controller. A buffer bin and a material conveying device are also arranged above the bulk grain scale injection gate. The chute is a telescopic chute that can be extended and retracted up and down. The controller is provided with a loading information summary module, a report generation module, and a printing module. The method includes the following steps: Step 1, obtaining static information of train carriages: Obtain relevant parameters including the model, position, shape, loading capacity of each carriage of the train, and the distance between each carriage, and input the relevant parameters into the controller to complete the reception and storage of the parameters of each train carriage; Step 2, obtaining dynamic information of train carriages: Obtain the current running speed and current carriage model of the current train through the carriage model identification sensor, and obtain the loading capacity of the current carriage according to the position and carriage model; Step 3, calculating the loading capacity of the current carriage: According to the loading capacity of the current carriage, set the average loading capacity of the four weighings of the bulk grain scale, and then adjust the planned loading capacity of each area according to the sizes of the four areas of the current loading carriage; It is characterized in that: Step 4, the first weighing: Open the bulk grain scale injection gate according to the calculated weighing amount of the first area of the current carriage, inject bulk grain into the bulk grain scale, and adjust the injection amount and injection speed through the opening sensor of the bulk grain scale injection gate during this period until the planned bulk grain amount of the first area is reached, then close the bulk grain scale injection gate, and then open the bulk grain scale discharge gate to unload the bulk grain after the first weighing into the buffer hopper; Step 5, the second weighing and starting to unload: Open the bulk grain scale injection gate according to the calculated weighing amount of the second area of the current carriage, inject bulk grain into the bulk grain scale, and adjust the injection amount and injection speed through the opening sensor of the bulk grain scale injection gate during this period until the planned bulk grain amount of the second area is reached, then close the bulk grain scale injection gate, and then open the bulk grain scale discharge gate to unload the bulk grain after the second weighing into the buffer hopper; During the second weighing process, lower the chute and open the buffer hopper gate to pour the bulk grain in the buffer hopper into the carriage through the chute; Step 6, the third weighing: Open the injection gate of the bulk grain scale according to the calculated weighing amount of the third area of the current carriage, and inject the bulk grain into the bulk grain scale. During this period, adjust the injection amount and injection speed through the opening sensor of the injection gate of the bulk grain scale until the planned bulk grain amount of the third area is reached. Then close the injection gate of the bulk grain scale. After that, open the discharge gate of the bulk grain scale to unload the bulk grain after the third weighing into the buffer hopper; During the third weighing process, the buffer hopper gate remains open, and the bulk grain in the buffer hopper is poured into the carriage through the chute. Step 7, the fourth weighing: Open the injection gate of the bulk grain scale according to the calculated weighing amount of the fourth area of the current carriage, and inject the bulk grain into the bulk grain scale. During this period, adjust the injection amount and injection speed through the opening sensor of the injection gate of the bulk grain scale until the planned bulk grain amount of the fourth area is reached. Then close the injection gate of the bulk grain scale. After that, open the discharge gate of the bulk grain scale to unload the bulk grain after the fourth weighing into the buffer hopper. After the fourth weighing of the bulk grain, return to Step 3 to prepare the loading amount for the next carriage; During the fourth weighing process, the buffer hopper gate remains open, and the bulk grain in the buffer hopper is poured into the carriage through the chute. The process of discharging the buffer hopper lags behind the weighing process of the first and second weighings of the bulk grain scale by half the time. Using the subsequent time, the bulk grain scale is weighed four times, which not only meets the characteristics of the grain hopper car being loaded in four areas but also avoids possible uneven loading during loading. Step 8, loading completed: After all the bulk grain in the buffer hopper has been poured out, close the buffer hopper gate and raise the chute to complete the loading of the fourth area of the current carriage. Then return to Step 5 to prepare to start loading the next carriage. When the train is composed of carriages of different models and the carriage height changes between different models of carriages, the controller will adjust the loading amount of each partition according to different models of carriages, control the lifting of the chute according to the carriage shape during loading, and adjust the downward probing height of the loading chute in real time to make the outlet of the loading chute as close as possible to the carriage feed inlet to match the height of different types of carriages and achieve continuous loading during the operation of the bulk grain car. After the entire train loading is completed, the controller summarizes the loading information, prints a list, and generates a report. The above 8-step loading process is the loading process of a single carriage. This process continuously cycles to form the loading process of the entire train. During loading, the train keeps moving forward without stopping, and the entire data acquisition, calculation, and loading process are carried out continuously.

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