Weighing device for quantitative loading

Abstract

The utility model discloses a weighing device for quantitative loading, which comprises a double-material-port hopper and pressure sensors, and the double-material-port hopper is arranged at four symmetrical positions through the four pressure sensors and is connected to a support. The bottom of the feeding hopper is connected to the support through the pressure sensor, weighing of the hopper is achieved, weighing of dozens of tons can be achieved, the structure is simple, cost is low, and later maintenance cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of quantitative coal loading equipment, in particular to a weighing device used for quantitative coal loading. Background Art

[0002] There are still few quantitative fast loading systems for bulk materials in China. On the one hand, there is no space reserved for installing quantitative weighing equipment during the early infrastructure construction process. On the other hand, there are many random factors in the automatic loading process of the car. It is not easy to load the car to the specified weight by manual judgment whether it is loaded in place, which can easily cause overloading or underloading. The previous manual loading method often requires unloading or adding materials, and the loading site is far away from the settlement and weighing place. If it cannot be loaded in place at one time, it is necessary to go back and queue up for loading again, which leads to increased transportation costs and waste of time.

[0003] There are 3 coal storage bunkers at the coal shipping site, with 2 types of coal, including 2 bunkers for clean coal and 1 bunker for mixed coal. The diameter of each bunker is 18 meters, and the daily shipping capacity is 5,000 tons. The feeding equipment under the bunker is a total of 18 reciprocating feeders and jaw loading gates. Two truck scales are installed outside the coal storage bunker for empty and heavy vehicle measurement.

[0004] At present, the coal is loaded and shipped by combining manual loading and forklift loading, and the coal trucks are all under the responsibility of the logistics company. If automatic equipment is used for loading, when selecting coal weighing equipment, the cost of purchasing large-weight weighing equipment (up to dozens of tons) is high, and because of the influence of coal powder, the maintenance frequency is high and the maintenance cost is high. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a weighing device for quantitative loading to solve the technical problems existing in the prior art.

[0006] The technical solution adopted by the utility model is: A weighing device for quantitative loading, including a double-mouth hopper and a pressure sensor. The double-mouth hopper is connected to a bracket through four pressure sensors arranged at four symmetrical positions.

[0007] Furthermore, a vibrator is installed on the side wall of the double-mouth hopper, and maintenance ladders are installed on both sides of the bracket.

[0008] Furthermore, an electrically controlled valve is provided at the bottom of the double-mouth hopper.

[0009] Furthermore, ladders are provided on both sides of the bracket, and a maintenance platform is provided on the top of the ladders.

[0010] Furthermore, the bracket includes three rows of columns, a top frame and a middle frame. The three rows of columns are fixedly connected to the left, middle and right parts of the bottom surface of the top frame respectively, and the middle frame is fixedly connected to the middle parts of the three rows of columns.

[0011] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model adopts a pressure sensor to connect the bottom of the upper hopper to the bracket to realize the weighing of the hopper weight, and can realize the weighing of weights up to tens of tons. It has a simple structure, low cost, and low subsequent maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the layout structure of the coal quantitative loading device;

[0013] Figure 2 This is a schematic diagram of the structure of a coal quantitative loading device;

[0014] Figure 3 This is a schematic diagram of the right view of the coal quantitative loading device;

[0015] Figure 4 It is a schematic diagram of the structure of a mobile concrete placing machine;

[0016] Figure 5 This is a schematic diagram of the left view of the mobile concrete placing machine;

[0017] Figure 6 It is a schematic diagram of the structure of a mobile concrete placing machine from a top view;

[0018] Figure 7 It is a schematic diagram of the structure of the coal-leveling machine;

[0019] Figure 8 This is a schematic diagram of the left view of the coal leveling machine;

[0020] Fig. 9 This is a schematic diagram of the structure of the coal leveling machine in the pressing state;

[0021] Fig.10 This is a schematic diagram of the structure of a double-mouth hopper scale;

[0022] Fig.11 This is a schematic diagram of the structure of a double-mouth hopper scale viewed from above;

[0023] Fig.12 It is a structural diagram of a double-mouth hopper scale mounted on a bracket. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific embodiments.

[0025] Example 1: Figure 10-12As shown, a weighing device for quantitative loading includes a double-mouth hopper 301 and a pressure sensor 302. The double-mouth hopper 301 is connected to a bracket 303 through four pressure sensors 302 arranged at four symmetrical positions, and through four sides; a vibrator 304 is installed on the side wall of the double-mouth hopper 301, which is convenient for discharging coal in the hopper from the hopper to ensure the accuracy of the loading weight. Maintenance ladders 305 are also installed on both sides of the bracket 303 for convenient maintenance. An electric control valve 306 is arranged at the bottom of the double-mouth hopper 301 for convenient material discharge control; ladders 305 are arranged on both sides of the bracket 303, and a maintenance platform 307 is arranged on the top of the ladder 305, which is more conducive to the maintenance of the hopper; the bracket 303 includes three rows of columns, a top frame and a middle frame. The three rows of columns are respectively fixedly connected to the left, middle and right positions of the bottom surface of the top frame, and the middle frame is fixedly connected to the middle of the three rows of columns. The support is stable and reliable, and the structure is simple.

[0026] Example 2: Figure 1-12 As shown, a quantitative coal loading device comprises a clean coal bunker 1, a mixed coal bunker 2, a double-mouth hopper scale 3, a lifting belt conveyor 4 and a loading station 5. The double-mouth hopper scale 3 is installed at the bottom discharge ports of the clean coal bunker 1 and the mixed coal bunker 2. The discharge ports of the two double-mouth 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; by controlling the weighing of the double-mouth hopper scale and then transporting it to the loading station by the lifting belt conveyor, mixed loading of different types of coal can be achieved, the loading efficiency is high, no manual assistance is required, the loading is automatically completed, the loading time is greatly shortened, no manual on-site cooperation is required, and the labor cost is reduced.

[0027] Among them, the loading station 5 includes two transfer belt conveyors 6 and a mobile material distributor 7. One end of the two transfer belt conveyors 6 is respectively connected to the tail ends of two side-by-side lifting belt conveyors 4. The relatively inner ends of the two transfer belt conveyors 6 are connected to the top of the mobile material distributor 7. The mobile material distributor 7 is installed on a steel frame platform track 8. The area below the steel frame platform track 8 is a truck walking area. Through the transfer belt conveyor and the mobile material distributor, different types of coal can be mixed and loaded into trucks. Moreover, the mobile material distributor can move, load and distribute materials, and the materials are distributed more evenly, which reduces manual participation and reduces labor intensity.

[0028] In order to make the vehicle load coal more evenly, two symmetrical coal levelers 9 are installed on both sides of the truck walking area under the steel frame platform track 8. The coal leveler is used to level and compact the loaded coal to avoid the problem of inconsistent coal loading center of gravity of the coal-loading vehicle. The driver does not need to level the coal, which improves loading efficiency and reduces safety hazards. Each coal leveler 9 includes a pressing 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 pressing plate 901 is hinged to the side of the L-shaped telescopic frame 903 facing the truck walking area, and one end of multiple hydraulic cylinders 1 902 is hinged along the length direction near the middle of the outer side, and the other end of the multiple hydraulic cylinders 1 902 is hinged to the telescopic frame 90 3, multiple slide bars 906 are arranged at the bottom of the telescopic frame 903, and the multiple slide bars 906 are slidably embedded in multiple horizontal slide grooves 907 of the L-shaped fixed frame 904. The outer frame of the telescopic frame 903 is hinged with multiple hydraulic cylinders 905, and the other ends of the multiple hydraulic cylinders 905 are hinged to the support frame 908, and the fixed frame 904 is fixedly connected to the support frame 908; in order to make the telescopic frame more stable in pushing and pulling and prevent the telescopic frame from turning over, two sliding protrusions 909 are arranged on both sides of each slide bar 906, and two lateral slide grooves 910 are arranged on both sides of the horizontal slide groove 907, and the two sliding protrusions 909 are respectively movably embedded in the two lateral slide grooves 910. In order to facilitate pulling and pulling, multiple support pulleys 911 are arranged at the bottom of the two lateral slide grooves 910, and the support pulleys 911 support the sliding protrusions 909, which can reduce friction and make pushing and pulling easier.

[0029] The working principle of the coal leveling machine: After the vehicle cargo box is loaded with coal, control hydraulic cylinder 2 to push and pull it towards the cargo box, stop at the set position, and then pneumatic hydraulic cylinder 1 is used for compaction. During the compaction process, it returns to the original position for multiple times and performs compaction operations at different pulling and pulling positions. Both sides are carried out symmetrically and simultaneously, and the force is balanced.

[0030] In order to realize fast loading, the specific structure of the double-mouth hopper scale 3 includes a double-mouth hopper 301 and a pressure sensor 302. The double-mouth hopper 301 is connected to the bracket 303 through four pressure sensors 302 arranged at four symmetrical positions, and through four sides; the side wall of the double-mouth hopper 301 is installed with a vibrator 304, which is convenient for discharging the coal in the hopper into the hopper to ensure the accuracy of the loading weight. Maintenance ladders 305 are also installed on both sides of the bracket 303 for convenient maintenance. An electric-controlled valve 306 is arranged at the bottom of the double-mouth hopper 301; ladders 305 are arranged on both sides of the bracket 303, and a maintenance platform 307 is arranged on the top of the ladder 305; the bracket 303 includes three rows of columns, a top frame and a middle frame. The three rows of columns are respectively fixedly connected to the left, middle and right parts of the bottom surface of the top frame, and the middle frame is fixedly connected to the middle of the three rows of columns.

[0031] Among them, the mobile material distributing machine 7 includes a frame 701, a driving wheel group 702 and a driven wheel group 703. The driving wheel group 702 and the driven wheel group 703 are arranged at the bottom of the frame 701. The driving wheel group 702 and the driven wheel group 703 are placed on the steel frame platform track 8 and can move back and forth. The driving roller 704 and the driven roller 705 are installed at both ends above the frame 701. The driving roller 704 is connected to a driving device 706. The driving roller 704 and the driven roller 705 are sleeved with skirt belts 707. Rollers 708 are also installed on the frame 701 between the driving roller 704 and the driven roller 705. The material distributing machine using this structure has stable and reliable material distribution, the skirt belt can reduce slag falling, and multiple rollers can support stable and reliable transportation. A sweeper 709 is also installed at the bottom of the frame 701.

[0032] Embodiment 3: A method for using a weighing device for quantitative loading, the method comprising: (1) material preloading: sending a quantitative value to a double-mouth hopper scale, wherein the quantitative value of the double-mouth hopper scale of the clean coal bin is A tons, and the quantitative value of the double-mouth hopper scale of the mixed coal bin is B tons, and the total quantitative weight is A+B tons. The two double-mouth hopper scales are used to quantitatively weigh and control the feeding of two reciprocating coal feeders, and the reciprocating coal feeders are stopped when the set value is reached; (2) task confirmation: when a vehicle arrives at the loading station, the vehicle information is identified and read, and 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 for loading. If it is found to be an illegal vehicle, an alarm is issued to prohibit entry, and the loading data of the vehicle is retrieved and compared with the correct material. After that, the remaining amount of the load (5 tons) is sent to the double-mouth hopper scale of the mixed coal bin. The hopper scale controls the feeding of two reciprocating coal feeders by quantitative weighing. When the set value is reached, the reciprocating coal feeder stops; (3) Vehicle positioning: The driver drives to the loading position for the first time according to the command system to check 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 about the deviation from the target position to ensure that the driver can stop at the preset position at one time. If the vehicle is not in place, the voice screen prompts the driver to move the vehicle. After the vehicle is located, the system starts loading operations; (4) Automatic loading: The mobile spreader moves to the drop point at the rear of the carriage. The mobile spreader, loading belt conveyor, lifting belt conveyor, and fixed-value hopper scale flat discharge gate complete the loading operation; (5) Automatic coal leveling: When the vehicle arrives at the loading point, the coal leveler is started and pushed to the top of the car to start loading. After loading is completed, the coal leveler is used to compact the materials to complete the coal leveling operation. (6) End of loading: The end of loading is automatically controlled according to the target load. The vehicle is fully loaded on the large screen, and the voice broadcast announces the end of loading. The driver drives away from the channel, the system automatically saves the data, and the loading data is pushed to the transportation and sales system.

[0033] The above description is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present utility model, which should be included in the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims

1. A weighing device for quantitative loading of coal, characterized in that: The invention comprises a double-mouth hopper (301) and a pressure sensor (302), wherein the double-mouth hopper (301) is connected to a bracket (303) via four pressure sensors (302) arranged at four symmetrical positions; a vibrator (304) is installed on the side wall of the double-mouth hopper (301); an electric control valve (306) is arranged at the bottom of the double-mouth hopper (301); ladders (305) are arranged on both sides of the bracket (303), and a maintenance platform (307) is arranged on the top of the ladder (305); the bracket (303) comprises three rows of columns, a top frame and a middle frame, wherein the three rows of columns are fixedly connected to the left, middle and right positions of the bottom surface of the top frame respectively, and the middle frame is fixedly connected to the middle of the three rows of columns; the discharge ports of the two double-mouth hoppers (301) are connected to a loading station (5) via a lifting belt conveyor (4), and the loading station (5) is used for mixing and loading coal.

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