Unattended quantitative car loading device and method

Abstract

This invention discloses an unattended quantitative loading device and method, comprising a clean coal bin, a mixed coal bin, a dual-inlet hopper scale, a lifting belt conveyor, and a loading station. Both the clean coal bin and the mixed coal bin are equipped with dual-inlet hopper scales at their bottom outlets. The outlets of both hopper scales are connected to the loading station via a lifting belt conveyor. The loading station is used for mixed coal loading. This invention, by controlling the weighing of the dual-inlet hopper scales and then transporting the materials to the loading station via the lifting belt conveyor, enables the mixed loading of different types of coal. It achieves high loading efficiency, requires no manual assistance, and automatically completes the loading process, significantly shortening loading time and reducing labor costs by eliminating the need for on-site manual intervention.

Description

Technical Field

[0001] This invention relates to the field of coal quantitative loading equipment technology, and in particular to an unattended quantitative loading device and method. Background Technology

[0002] There are still very few quantitative and rapid loading systems for bulk materials in China. This is partly because space for installing quantitative weighing equipment was not reserved during the early stages of infrastructure construction. Another reason is the numerous random factors involved in automated loading; manually determining whether a truck is fully loaded makes it difficult to ensure it reaches the required weight, easily leading to overloading or underloading. Traditional manual loading methods often require unloading or adding materials, and the loading site is often far from the weighing and settlement area. If loading is not completed on the first attempt, the truck must return to the queue to reload, increasing transportation costs and wasting time.

[0003] There are three coal storage silos at the coal dispatch site, storing two types of coal: two silos for refined coal and one silo for mixed coal. Each silo has a diameter of 18 meters and a daily dispatch capacity of 5,000 tons. The silo feeding equipment consists of 18 reciprocating feeders and jaw loading gates. Two truck scales are installed outside the coal storage silos for weighing empty and loaded trucks.

[0004] Currently, loading and shipping are carried out using a combination of manual unloading and loader replenishment. All coal trucks are managed by logistics companies, which assign the customers and types of coal transported to each truck. However, this method has the following problems:

[0005] A. The combination of vehicle traffic and manual loading within the factory results in low overall loading efficiency. Currently, the average loading efficiency is about 15 minutes per vehicle from entering the warehouse to being qualified and leaving the factory.

[0006] D. Manual operation is slow and costly. In addition, due to the coordination between vehicle movement and manual opening of the unloading port under the coal bunker, there is a long-term spillage of material, which requires manual cleaning. Each loading position requires at least one loading person per shift, and multiple loading positions require more manual staff.

[0007] C. The uneven center of gravity of coal loading vehicles results in one side being full while the other side has a lot of excess, which can easily lead to transportation safety hazards, increase the driver's coal leveling process in the vehicle, cause vehicles to be stuck in the plant, reduce the plant's turnover rate, and also bring safety hazards such as the driver working at height in the cargo box. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide an unattended quantitative loading device and method to solve the technical problems existing in the prior art.

[0009] The technical solution adopted in this invention is as follows: An unattended quantitative loading device includes a clean coal bin, a mixed coal bin, a dual-inlet hopper scale, a lifting belt conveyor, and a loading station. The bottom outlets of both the clean coal bin and the mixed coal bin are equipped with dual-inlet hopper scales. The outlets of the two dual-inlet hopper scales are connected to the loading station through a lifting belt conveyor. The loading station is used for mixed coal loading.

[0010] Furthermore, the aforementioned loading station includes two transfer belt conveyors and a mobile placing boom. One end of each of the two transfer belt conveyors is connected to the tail end of two parallel lifting belt conveyors. The inner ends of the two transfer belt conveyors are connected to the top of the mobile placing boom, which is installed on a steel frame platform track. The area below the steel frame platform track is the truck travel area.

[0011] Furthermore, two symmetrical coal levelers are installed on both sides of the truck travel area below the aforementioned steel frame platform track.

[0012] Furthermore, each of the above-mentioned coal leveling machines includes a pressure plate, a hydraulic cylinder one, a telescopic frame, a fixed frame, and a hydraulic cylinder two. The lower end of the pressure plate is hinged to the side of the L-shaped telescopic frame facing the truck travel area. One end of multiple hydraulic cylinders one is hinged to the outer side near the middle along the length direction. The other end of multiple hydraulic cylinders one is hinged to the outer frame of the telescopic frame. Multiple sliding strips are provided at the bottom of the telescopic frame. The multiple sliding strips are slidably embedded in multiple horizontal sliding grooves of the L-shaped fixed frame. Multiple hydraulic cylinders two are hinged to the outer frame of the telescopic frame. The other end of multiple hydraulic cylinders two is hinged to the support frame. The fixed frame is fixedly connected to the support frame.

[0013] Furthermore, each of the above-mentioned sliders is provided with two sliding protrusions on both sides, and two lateral sliding grooves are provided on both sides of the horizontal sliding groove, with the two sliding protrusions respectively movably embedded into the two lateral sliding grooves.

[0014] Furthermore, multiple support pulleys are provided at the bottom of the two lateral sliding grooves, and the support pulleys support the sliding protrusions.

[0015] Furthermore, the aforementioned dual-feed hopper includes a dual-feed hopper and pressure sensors. The dual-feed hopper is connected to a support via four pressure sensors arranged in four symmetrical positions.

[0016] Furthermore, the side walls of the aforementioned dual-feed hopper are equipped with vibrators, and maintenance ladders are also installed on both sides of the support.

[0017] Furthermore, the aforementioned mobile concrete placing machine includes a frame, a drive wheel assembly, and a driven wheel assembly. The drive wheel assembly and the driven wheel assembly are arranged at the bottom of the frame. The drive wheel assembly and the driven wheel assembly are placed on the steel frame platform track and can move back and forth. Drive rollers and driven rollers are installed at both ends of the frame. The drive rollers are connected to a drive device. Skirted belts are fitted on the drive rollers and the driven rollers. Idler rollers are also installed on the frame between the drive rollers and the driven rollers.

[0018] A method for using an unattended quantitative loading device, the method is as follows: (1) Material preloading: The quantitative value is issued to the dual-inlet hopper scale, where the quantitative value of the dual-inlet hopper scale of the fine coal bin is A tons, and the quantitative value of the dual-inlet hopper scale of the mixed coal bin is B tons, and the total quantitative weight is A+B tons. The two reciprocating coal feeders are controlled by the quantitative weighing of the two dual-inlet hopper scales. The reciprocating coal feeders stop when the set value is reached; (2) Task confirmation: When the vehicle arrives at the loading station, the vehicle information is identified and read. The vehicle information is obtained through card information docking, including coal type information, target load, empty vehicle weight, and vehicle size information. If the vehicle information is correct, the vehicle is allowed to enter the loading station. If an illegal vehicle is found, an alarm is set and the vehicle is not allowed to enter. The loading data of the vehicle is retrieved. After comparing the material and confirming that it is correct, the loading device is loaded. The remaining amount of the load (5 tons) is sent to the double-inlet hopper scale of the mixed coal bunker. The hopper scale feeds the material by quantitative weighing and controlling two reciprocating coal feeders. When the set value is reached, the reciprocating coal feeders stop; (3) Vehicle positioning: The driver drives to the loading position for the first time according to the command system and checks whether the vehicle is in place. During the driving process, the vehicle positioning system locates the vehicle position in real time. The large screen and voice interaction system prompt the driver in real time the deviation from the target position to ensure that the driver can stop at the preset position in one go. If the vehicle is not in place, the voice large screen prompts the driver to move the vehicle. After the vehicle is positioned, the system starts the loading operation; (4) Automatic loading: The mobile placing boom moves to the material drop point at the rear of the car body. The mobile placing boom, loading belt, lifting belt, and fixed value hopper scale flat discharge gate complete the loading operation; (5) Automatic coal leveling: After the vehicle arrives at the loading point, the coal leveling machine is started and pushed to the top of the car body to start loading. After loading is completed, the coal leveling machine is used to compact the material and complete the coal leveling operation; (6) Loading end: The loading is automatically controlled to end according to the target load. The vehicle full load information is displayed on the large screen, the loading is announced by voice, the driver drives away from the passage, the system automatically saves the data, and the loading data is pushed to the transportation and sales system.

[0019] The beneficial effects of this invention are as follows: Compared with the prior art, this invention controls the weighing of the dual-feeding-inlet hopper and then uses a conveyor belt to transport the coal to the loading station, enabling the mixed loading of different types of coal. This results in high loading efficiency, eliminates the need for manual assistance, and automatically completes the loading process, significantly shortening loading time and reducing labor costs by eliminating the need for on-site manual assistance. Furthermore, the use of a coal leveler to level and compact the coal after loading avoids the problem of inconsistent center of gravity in the coal loading vehicles, eliminating the need for driver-led leveling, improving loading efficiency, and reducing safety hazards. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the layout structure of the unattended quantitative loading device;

[0021] Figure 2This is a schematic diagram of the unattended quantitative loading device;

[0022] Figure 3 This is a schematic diagram of the structure of the unmanned quantitative loading device (right view).

[0023] Figure 4 This is a schematic diagram of a mobile fabric laying machine.

[0024] Figure 5 This is a schematic diagram of the left-side structure of a mobile fabric placing machine;

[0025] Figure 6 This is a top view of the mobile fabric placing machine.

[0026] Figure 7 This is a schematic diagram of a coal leveling machine.

[0027] Figure 8 This is a schematic diagram of the left-side structure of a coal leveling machine;

[0028] Figure 9 This is a schematic diagram of the pressing state structure of the coal leveling machine;

[0029] Figure 10 This is a schematic diagram of a dual-feed-outlet hopper scale.

[0030] Figure 11 This is a top view of the structure of a dual-feed-outlet hopper.

[0031] Figure 12 This is a schematic diagram of the structure on the mounting bracket of a dual-feed-outlet hopper. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments.

[0033] Example 1: As Figure 1-12 As shown, an unattended quantitative loading device includes a clean coal bin 1, a mixed coal bin 2, a dual-outlet hopper scale 3, a lifting belt conveyor 4, and a loading station 5. The bottom discharge ports of both the clean coal bin 1 and the mixed coal bin 2 are equipped with dual-outlet hopper scales 3. The discharge ports of the two dual-outlet hopper scales 3 are connected to the loading station 5 through a lifting belt conveyor 4. The loading station 5 is used for mixed coal loading.

[0034] The loading station 5 includes two transfer conveyor belts 6 and a mobile placing boom 7. One end of each of the two transfer conveyor belts 6 is connected to the tail end of two parallel lifting conveyor belts 4. The inner ends of the two transfer conveyor belts 6 are connected to the top of the mobile placing boom 7. The mobile placing boom 7 is installed on the steel frame platform track 8. The area below the steel frame platform track 8 is the truck travel area. Through the transfer conveyor belts and the mobile placing boom, different types of coal can be mixed and loaded onto trucks. Moreover, the mobile placing boom can move, load and place the material, and the material is placed more evenly, reducing manual intervention and labor intensity.

[0035] To ensure more even coal loading, two symmetrical coal levelers 9 are installed on both sides of the truck travel area below the steel frame platform track 8. These levelers flatten and compact the loaded coal, preventing uneven coal center of gravity and eliminating the need for driver intervention. This improves loading efficiency and reduces safety hazards. Each coal leveler 9 includes a pressure plate 901, a first hydraulic cylinder 902, a telescopic frame 903, a fixed frame 904, and a second hydraulic cylinder 905. The lower end of the pressure plate 901 is hinged to the L-shaped telescopic frame 903 on the side facing the truck travel area. Near the center on the outer side, one end of multiple first hydraulic cylinders 902 is hinged along the length. The other ends of the multiple first hydraulic cylinders 902 are hinged to the telescopic frame 905. On the outer frame of the telescopic frame 903, multiple sliding strips 906 are provided at the bottom. These sliding strips 906 slide into multiple horizontal grooves 907 of the L-shaped fixed frame 904. Multiple hydraulic cylinders 905 are hinged to the outer frame of the telescopic frame 903, with the other end of each cylinder hinged to a support frame 908. The fixed frame 904 is fixedly connected to the support frame 908. To ensure more stable pushing and pulling and prevent the telescopic frame from tipping over, each sliding strip 906 has two sliding protrusions 909 on both sides. Two lateral grooves 910 are provided on both sides of each horizontal groove 907, with the two sliding protrusions 909 movably embedded into the two lateral grooves 910. For easier pulling, multiple support pulleys 911 are provided at the bottom of the two lateral grooves 910. The support pulleys 911 support the sliding protrusions 909, reducing friction and making pushing and pulling easier.

[0036] Coal leveling machine operating principle: After the vehicle's cargo box is loaded with coal, the second hydraulic cylinder is controlled to push and pull the coal towards the cargo box, stopping when it reaches the set position. The first pneumatic hydraulic cylinder then compacts the coal. During the compaction process, the coal is repeatedly returned to its original position for compaction and compaction is performed at different pulling positions. The compaction is carried out symmetrically on both sides simultaneously, ensuring balanced force.

[0037] To enable rapid loading, the dual-feed-outlet hopper weighing system 3 specifically includes a dual-feed-outlet hopper 301 and pressure sensors 302. The dual-feed-outlet hopper 301 is connected to the support 303 through four pressure sensors 302 arranged in four symmetrical positions on the four sides. Vibrators 304 are installed on the side walls of the dual-feed-outlet hopper 301 to facilitate the discharge of coal from the hopper and ensure accurate loading weight. Maintenance ladders 305 are also installed on both sides of the support 303 for convenient maintenance.

[0038] The mobile concrete placing boom 7 includes a frame 701, a drive wheel set 702, and a driven wheel set 703. The drive wheel set 702 and the driven wheel set 703 are arranged at the bottom of the frame 701. The drive wheel set 702 and the driven wheel set 703 are placed on the steel frame platform track 8 and can move back and forth. The drive roller 704 and the driven roller 705 are installed at both ends of the frame 701. The drive roller 704 is connected to a drive device 706. The drive roller 704 and the driven roller 705 are fitted with skirted belts 707. The frame 701 between the drive roller 704 and the driven roller 705 is also equipped with idler rollers 708. The concrete placing boom with this structure has stable and reliable material placement. The skirted belt reduces debris. The multiple idler rollers support stable and reliable transportation. The bottom of the frame 701 is also equipped with a cleaner 709.

[0039] Example 2: A method for using an unattended quantitative loading device, the method is as follows: (1) Material preloading: The quantitative value is issued to the dual-inlet hopper scale, where the quantitative value of the dual-inlet hopper scale of the fine coal bin is A tons, and the quantitative value of the dual-inlet hopper scale of the mixed coal bin is B tons, and the total quantitative weight is A+B tons. The two reciprocating coal feeders are controlled by the quantitative weighing of the two dual-inlet hopper scales. The reciprocating coal feeders stop when the set value is reached; (2) Task confirmation: When the vehicle arrives at the loading station, the vehicle information is identified and read. The vehicle information is obtained through card information docking, including coal type information, target load, empty vehicle weight, and vehicle size information. If the vehicle information is correct, the vehicle is allowed to enter the loading station. If an illegal vehicle is found, an alarm is set and the vehicle is not allowed to enter. The loading data of the vehicle is retrieved and compared with the correct material. The remaining amount of the load (5 tons) is sent to the double-inlet hopper scale of the mixed coal bin. The hopper scale feeds the material by quantitative weighing and controlling the two reciprocating coal feeders. When the set value is reached, the reciprocating coal feeders stop; (3) Vehicle positioning: The driver drives to the loading position for the first time according to the command system and checks whether the vehicle is in place. During the driving process, the vehicle positioning system locates the vehicle position in real time. The large screen and voice interaction system prompt the driver in real time the deviation from the target position to ensure that the driver can stop at the preset position in one go. If the vehicle is not in place, the voice large screen prompts the driver to move the vehicle. After the vehicle is positioned, the system starts the loading operation; (4) Automatic loading: The mobile placing boom moves to the material drop point at the rear of the car body. The mobile placing boom, loading belt, lifting belt, and fixed value hopper scale flat discharge gate complete the loading operation; (5) Automatic coal leveling: After the vehicle arrives at the loading point, the coal leveling machine is started and pushed to the top of the car body to start loading. After loading is completed, the coal leveling machine is used to compact the material and complete the coal leveling operation; (6) Loading end: The loading is automatically controlled to end according to the target load. The vehicle full load information is displayed on the large screen, the loading is announced by voice, the driver drives away from the passage, the system automatically saves the data, and the loading data is pushed to the transportation and sales system.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of protection of the claims.

Claims

1. An unattended quantitative loading device, characterized in that: The system includes a clean coal bin (1), a mixed coal bin (2), a double-outlet hopper scale (3), a lifting belt conveyor (4), a loading station (5), and a steel frame platform track (8). Both the clean coal bin (1) and the mixed coal bin (2) are equipped with double-outlet hopper scales (3) at their bottom outlets. The outlets of the two double-outlet hopper scales (3) are connected to the loading station (5) via a lifting belt conveyor (4). The loading station (5) is used for mixed coal loading. Two symmetrical coal levelers (9) are installed on both sides of the truck travel area below the steel frame platform track (8). Each coal leveler (9) includes a pressure plate (901), a hydraulic cylinder 1 (902), a telescopic frame (903), a fixed frame (904), and a hydraulic cylinder 2 (905). The lower end of the pressure plate (901) is hinged to the side of the L-shaped telescopic frame (903) facing the truck travel area. The outer side is hinged to one end of multiple hydraulic cylinder 1 (902) along the length direction near the middle. The other end of multiple hydraulic cylinder 1 (902) is hinged to the outer frame of the telescopic frame (903). Multiple slide bars (906) are provided at the bottom of the telescopic frame (903). The multiple slide bars (906) slide into multiple horizontal slide grooves (907) of the L-shaped fixed frame (904). Multiple hydraulic cylinder 2 (905) are hinged to the outer frame of the telescopic frame (903). The other end of multiple hydraulic cylinder 2 (905) is hinged to the support frame (908). The fixed frame (904) is fixedly connected to the support frame (908).

2. The unattended quantitative loading device according to claim 1, characterized in that: The loading station (5) includes two transfer belt conveyors (6) and a mobile concrete placing machine (7). One end of each of the two transfer belt conveyors (6) is connected to the tail end of two parallel lifting belt conveyors (4). The inner ends of the two transfer belt conveyors (6) are connected to the top of the mobile concrete placing machine (7). The mobile concrete placing machine (7) is installed on the steel frame platform track (8). The area below the steel frame platform track (8) is the truck travel area.

3. The unattended quantitative loading device according to claim 1, characterized in that: Each slider (906) has two sliding protrusions (909) on both sides, and two lateral grooves (910) are provided on both sides of the horizontal groove (907). The two sliding protrusions (909) are respectively movably embedded into the two lateral grooves (910).

4. The unattended quantitative loading device according to claim 3, characterized in that: Multiple support pulleys (911) are provided at the bottom of the two side slides (910), and the support pulleys (911) support the sliding protrusions (909).

5. The unattended quantitative loading device according to claim 1, characterized in that: The dual-feed hopper (3) includes a dual-feed hopper (301) and a pressure sensor (302). The dual-feed hopper (301) is connected to the bracket (303) by four pressure sensors (302) arranged in four symmetrical positions.

6. The unattended quantitative loading device according to claim 5, characterized in that: A vibrator (304) is installed on the side wall of the dual-feed hopper (301).

7. The unattended quantitative loading device according to claim 2, characterized in that: The mobile fabric placing machine (7) includes a frame (701), a drive wheel set (702), and a driven wheel set (703). The drive wheel set (702) and the driven wheel set (703) are arranged at the bottom of the frame (701). The drive wheel set (702) and the driven wheel set (703) are placed on the steel frame platform track (8) and can move back and forth. The drive roller (704) and the driven roller (705) are installed at both ends above the frame (701). The drive roller (704) is connected to a drive device (706). The drive roller (704) and the driven roller (705) are fitted with skirt belts (707). The idler roller (708) is also installed on the frame (701) between the drive roller (704) and the driven roller (705).

8. The method of using the unattended quantitative loading device according to claim 2, characterized in that: The method is as follows: (1) Material preloading: The quantitative value is issued to the double-port hopper scale, where the quantitative value of the double-port hopper scale of the fine coal bin is A tons, and the quantitative value of the double-port hopper scale of the mixed coal bin is B tons, and the total quantitative weight is A+B tons. The two reciprocating coal feeders are controlled by the quantitative weighing of the two double-port hopper scales. The reciprocating coal feeders stop when the set value is reached; (2) Task confirmation: When the vehicle arrives at the loading station, the vehicle information is identified and read. The vehicle information is obtained through card information docking, including coal type information, target load, empty vehicle weight, and vehicle size information. If the vehicle information is correct, the vehicle is allowed to enter the loading station. If an illegal vehicle is found, an alarm is set and the vehicle is not allowed to enter. The loading data of the vehicle is retrieved. After the material is correct, the remaining loading amount is issued to the double-port hopper scale of the mixed coal bin. The hopper scale is fed by quantitative weighing and the two reciprocating coal feeders. The reciprocating coal feeders stop when the set value is reached; (3) Vehicle positioning: The driver is positioned according to the first command system. The vehicle is driven to the loading position in one go. The vehicle positioning system locates the vehicle position in real time during the driving process. The large screen and voice interaction system prompt the driver in real time about the deviation from the target position to ensure that the driver can stop at the preset position in one go. If the vehicle is not in position, the voice and large screen prompt the driver to move the vehicle. After the vehicle is positioned, the system starts loading operation; (4) Automatic loading: The mobile concrete placing machine moves to the material drop point at the rear of the car body. The mobile concrete placing machine, transfer belt conveyor, lifting belt conveyor, fixed value hopper scale flat discharge gate complete the loading operation; (5) Automatic coal leveling: After the vehicle arrives at the loading point, the coal leveling machine is started and pushed to the top of the car body to start loading. After loading is completed, the coal leveling machine is used to compact the material to complete the coal leveling operation; (6) Loading end: The loading is automatically controlled to end according to the target load. The vehicle full load information is displayed on the large screen. The voice broadcasts that the loading is over. The driver drives away from the channel. The system automatically saves the data and pushes the loading data to the transportation and sales system.

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