Cement loading scale

Abstract

The utility model relates to the technical field of weighing device, disclose a kind of weighing device for cement loading, including rack, the crane hopper is arranged in the inside of rack, the inside of crane hopper is provided with scattering subassembly, the lower surface of crane hopper is provided with discharge gate, the inside of discharge gate is provided with ration subassembly, the ration subassembly includes fixed discharge tray and rotating discharge tray, the outer wall of discharge gate is fixedly connected with connecting block three, the outer wall of rotating discharge tray is fixedly connected with connecting block two, the outer wall of discharge gate is provided with sliding slot, the outer wall of connecting block three is rotatably connected with hydraulic rod, and the output end of hydraulic rod is rotatably connected in the outer wall of connecting block two.In the utility model, rotating discharge tray is rotated relative to fixed discharge tray by hydraulic drive mechanism, the coincidence area of discharge hole between the two is adjusted, the instantaneous flow of cement is accurately controlled, and the mechanical structure avoids the problems that traditional valve control material is easy to be stuck and adjustment is rough.

Description

Technical Field

[0001] This utility model relates to the field of weighing device technology, and in particular to a weighing device for loading cement trucks. Background Technology

[0002] Cement, as a basic building material, requires precise weighing during loading and transportation to ensure fair trade settlement and transportation safety. Traditional cement loading weighing devices generally suffer from insufficient metering accuracy and poor material control stability. Especially when dealing with large-scale continuous loading operations, they are prone to overloading or underloading, which directly affects transportation efficiency and cost control. Therefore, developing a high-precision, continuously adjustable cement loading weighing device has significant engineering value.

[0003] Existing cement weighing devices typically employ a structure combining a hopper and a mechanical valve to achieve quantitative control. Specifically, a gate-type or butterfly valve-type material control mechanism is installed at the bottom of the hopper. The opening and closing angle of the valve is driven by a motor or cylinder to adjust the material flow rate. A weighing sensor monitors the weight change of the hopper in real time, and the valve is closed when a preset threshold is reached. This type of structure relies on the physical displacement of the valve to control the material passage cross section. The technical principle is simple, but the adjustment method is relatively crude.

[0004] However, the above-mentioned valve material control method has significant drawbacks. Because cement dust is prone to caking between the moving parts of the valve, frequent opening and closing can lead to mechanical jamming, causing the flow regulation to fail. At the same time, the valve opening can only achieve limited step-by-step adjustment and cannot be steplessly and precisely controlled according to the actual loading requirements. This defect directly results in large instantaneous flow fluctuations and high cumulative metering errors. Especially under rapid loading conditions, repeated start-stop corrections are often required, which restricts loading efficiency and metering accuracy. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a weighing device for loading cement trucks, which aims to improve the problem of cement dust easily caking between the moving parts of the valve.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a weighing device for loading cement trucks, comprising a frame, a crane hopper inside the frame, a dispersing component inside the crane hopper, a discharge port on the lower surface of the crane hopper, and a metering component inside the discharge port;

[0007] The quantitative component includes a fixed feeding tray and a rotating feeding tray. The outer wall of the fixed feeding tray is fixedly connected to the inner wall of the discharge port. One end of the rotating feeding tray is rotatably connected to the inner wall of the fixed feeding tray. The rotating feeding tray is located inside the discharge port. A connecting block three is fixedly connected to the outer wall of the discharge port. A connecting block two is fixedly connected to the outer wall of the rotating feeding tray. A sliding groove is formed through the outer wall of the discharge port. A hydraulic rod is rotatably connected to the outer wall of the connecting block three. The output end of the hydraulic rod is rotatably connected to the outer wall of the connecting block two.

[0008] Furthermore, the dispersing assembly includes a stirring blade and an auger blade, a bridge is fixedly connected to the inner wall of the crane hopper, a drive shaft is rotatably connected to the inner wall of the bridge, the inner wall of the stirring blade is fixedly connected to the outer wall of the drive shaft, and the inner wall of the auger blade is fixedly connected to the outer wall of the drive shaft.

[0009] Furthermore, a fixed rod is fixedly connected to the inner wall of the crane hopper, the outer wall of the drive shaft is rotatably connected to the inner wall of the fixed rod, and one end of the drive shaft is rotatably connected to the inner wall of the fixed feeding tray.

[0010] Furthermore, a motor is provided on the upper surface of the bridge frame, and the output end of the motor is fixedly connected to the other end of the transmission shaft.

[0011] Furthermore, a screw rod is provided on the inner wall of the frame.

[0012] Furthermore, a second screw rod is sleeved on the outer wall of the first screw rod.

[0013] Furthermore, a weighing sensor is fixedly connected to one end of the screw rod.

[0014] Furthermore, a connecting block is fixedly connected to the outer wall of the crane hopper, and one end of the weighing sensor is disposed on the inner wall of the connecting block.

[0015] This utility model has the following beneficial effects:

[0016] In this invention, precise material feeding control is achieved through the coordinated operation of quantitative components. The hydraulic drive mechanism drives the rotating feeding disc to rotate relative to the fixed feeding disc, adjusting the overlapping area of ​​the feeding holes between the two. During operation, the hydraulic rod extends and retracts, causing the rotating feeding disc to rotate smoothly under the limit of the chute, accurately controlling the instantaneous flow rate of cement and realizing continuous and stepless quantitative feeding. This mechanical structure avoids the problems of easy jamming and rough adjustment of traditional valve material control, significantly improving the accuracy and efficiency of loading and metering.

[0017] In this invention, the dispersing component effectively solves the measurement error and blockage problems caused by cement caking. The motor drives the transmission shaft to rotate at high speed, which drives the top stirring blades to initially crush and stir the cement in the hopper. At the same time, the bottom auger blades continue to rotate, further dispersing the caking and forming a uniform material flow as the cement falls. This two-stage dispersing design ensures that the cement entering the weighing area always remains loose and has good fluidity. It not only eliminates the weight deviation caused by caking, but also prevents blockage at the discharge port, ensuring the continuity and stability of the loading operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a weighing device for loading cement trucks proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the crane hopper structure of a cement loading weighing device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the drive shaft structure of a weighing device for loading cement trucks, as proposed in this utility model.

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 This is a schematic diagram of the discharge port structure of a weighing device for loading cement trucks, as proposed in this utility model.

[0023] Legend:

[0024] 1. Frame; 2. Crane hopper; 3. Discharge port; 4. Bridge frame; 5. Motor; 6. Drive shaft; 7. Agitator blade; 8. Screw blade; 9. Fixing rod; 10. Screw rod one; 11. Screw rod two; 12. Weighing sensor; 13. Connecting block one; 14. Fixed feeding plate; 15. Rotating feeding plate; 16. Connecting block two; 17. Connecting block three; 18. Hydraulic rod; 19. Slide chute. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-5One embodiment of this utility model is a weighing device for loading cement, which includes a frame 1 that provides support for the entire device. The frame 1 is equipped with a crane hopper 2 for temporarily storing cement to be loaded. The crane hopper 2 is equipped with a dispersing component. The lower surface of the crane hopper 2 is provided with a discharge port 3, which is a channel for cement to be discharged from the crane hopper 2. The discharge port 3 is equipped with a metering component.

[0027] The metering component includes a fixed feeding tray 14 and a rotating feeding tray 15. By rotating the feeding tray 15 relative to the fixed feeding tray 14, the overlapping area of ​​their feeding holes is changed, thereby achieving stepless adjustment of the cement flow rate. The outer wall of the fixed feeding tray 14 is fixedly connected to the inner wall of the outlet 3, maintaining a fixed position to ensure uniform clearance with the rotating feeding tray 15. One end of the rotating feeding tray 15 is rotatably connected to the inner wall of the fixed feeding tray 14. By rotating, it changes the overlap ratio between its own feeding holes and the fixed feeding tray 14's feeding holes, thus precisely controlling the cement flow rate. The rotating feed plate 15 is located inside the discharge port 3. A connecting block 3 17 is fixedly connected to the outer wall of the discharge port 3 to provide a rotation fulcrum for the hydraulic rod 18. A connecting block 2 16 is fixedly connected to the outer wall of the rotating feed plate 15. A sliding groove 19 is opened through the outer wall of the discharge port 3 to provide guidance and limit for the movement of the connecting block 2 16. The hydraulic rod 18 is rotatably connected to the outer wall of the connecting block 3 17. Power is provided by hydraulic drive to control the rotating feed plate 15 to rotate slowly or quickly to adapt to different flow adjustment requirements. The output end of the hydraulic rod 18 is rotatably connected to the outer wall of the connecting block 2 16.

[0028] The dispersing assembly includes a mixing blade 7 and an auger blade 8. A bridge frame 4, providing a stable mounting and support structure for the motor 5 and drive shaft 6, is fixedly connected to the inner wall of the crane hopper 2. The drive shaft 6 is rotatably connected to the inner wall of the bridge frame 4. The mixing blade 7 is fixedly connected to the outer wall of the drive shaft 6 to initially disperse the cement. The auger blade 8 is fixedly connected to the outer wall of the drive shaft 6 to further disperse the cement lumps after initial treatment by the mixing blade 7. It also utilizes a spiral structure to propel the cement towards the discharge port 3, preventing cement from stagnating at the bottom of the hopper. A fixing rod 9 is fixedly connected to the inner wall of the crane hopper 2, and the outer wall of the drive shaft 6 is rotatably connected to the inner wall of the fixing rod 9 to prevent... To prevent the drive shaft 6 from wobbling or bending during rotation due to its long length, one end of the drive shaft 6 is rotatably connected to the inner wall of the fixed feeding tray 14. A motor 5 is installed on the upper surface of the bridge frame 4, and the output end of the motor 5 is fixedly connected to the other end of the drive shaft 6. A screw rod 10 is installed on the inner wall of the frame 1, and a screw rod 21 is sleeved on the outer wall of the screw rod 10. A weighing sensor 12 is fixedly connected to one end of the screw rod 2 to directly sense the weight change of the crane hopper 2 and the cement inside, and convert the weight signal into an electrical signal for output. A connecting block 13 is fixedly connected to the outer wall of the crane hopper 2, and one end of the weighing sensor 12 is installed on the inner wall of the connecting block 13.

[0029] Specifically, this cement loading weighing device achieves high-precision and stable cement loading operations through the collaborative work of multiple components. The frame 1, screw rod 10, and screw rod 11 form an adjustable support structure, which can stably support the crane hopper 2 and adapt to different loading needs through height adjustment. The dispersing component in the crane hopper 2, driven by the motor 5, drives the mixing blade 7 and auger blade 8 through the transmission shaft 6 to break up cement lumps in a two-stage manner, avoiding blockage and ensuring smooth material discharge. The metering component in the discharge port 3, through the cooperation of the fixed discharge plate 14 and the rotating discharge plate 15, achieves stepless flow regulation by adjusting the overlapping area of ​​the discharge holes under the drive of the hydraulic rod 18, solving the problems of easy jamming and rough adjustment of traditional valves. The weighing sensor 12 monitors the weight of the hopper and cement in real time through the connecting block 13, and together with the metering component, achieves precise metering loading. The overall structural design takes into account the functions of anti-caking, precise material control, and real-time weighing, effectively improving the efficiency and metering accuracy of cement loading, and is suitable for large-scale continuous loading operations.

[0030] Working principle: When this cement loading weighing device is needed, cement is first injected into the crane hopper 2 set in the frame 1. Then, the motor 5 is started to drive the transmission shaft 6 to rotate. The transmission shaft 6, supported by the bridge frame 4 and the fixed rod 9, drives the mixing blade 7 to initially crush the cement. At the same time, the auger blade 8 at the bottom further breaks up the lumps and drives the material to be discharged. The weighing system monitors the weight in real time. The telescopic bracket formed by the screw rod 10 and the screw rod 21 supports the crane hopper 2. The weighing sensor 12 detects the weight data through the connecting block 13. During the material discharge control stage, the hydraulic rod 18 extends and pushes the connecting block 2 16, which drives the rotating material discharge plate 15 to rotate along the slide 19 and limit it to rotate in the discharge port 3. The connecting block 3 17 provides a fulcrum. By adjusting the overlapping area of ​​the discharge hole of the rotating material discharge plate 15 and the fixed material discharge plate 14, precise material control is achieved. When the weighing sensor 12 detects the preset weight, the hydraulic rod 18 drives the rotating material discharge plate 15 to completely close the discharge hole of the fixed material discharge plate 14, and precisely stops the material discharge.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A weighing device for loading cement trucks, comprising a frame (1), characterized in that: The frame (1) is equipped with a crane hopper (2), the crane hopper (2) is equipped with a dispersing component, the lower surface of the crane hopper (2) is equipped with a discharge port (3), and the discharge port (3) is equipped with a metering component. The quantitative component includes a fixed feeding tray (14) and a rotating feeding tray (15). The outer wall of the fixed feeding tray (14) is fixedly connected to the inner wall of the discharge port (3). One end of the rotating feeding tray (15) is rotatably connected to the inner wall of the fixed feeding tray (14). The rotating feeding tray (15) is located inside the discharge port (3). A connecting block three (17) is fixedly connected to the outer wall of the discharge port (3). A connecting block two (16) is fixedly connected to the outer wall of the rotating feeding tray (15). A sliding groove (19) is provided through the outer wall of the discharge port (3). A hydraulic rod (18) is rotatably connected to the outer wall of the connecting block three (17). The output end of the hydraulic rod (18) is rotatably connected to the outer wall of the connecting block two (16).

2. The weighing device for loading cement trucks according to claim 1, characterized in that: The dispersing component includes a stirring blade (7) and an auger blade (8). A bridge frame (4) is fixedly connected to the inner wall of the crane hopper (2). A drive shaft (6) is rotatably connected to the inner wall of the bridge frame (4). The inner wall of the stirring blade (7) is fixedly connected to the outer wall of the drive shaft (6). The inner wall of the auger blade (8) is fixedly connected to the outer wall of the drive shaft (6).

3. The weighing device for loading cement trucks according to claim 2, characterized in that: The inner wall of the crane hopper (2) is fixedly connected to a fixed rod (9), the outer wall of the drive shaft (6) is rotatably connected to the inner wall of the fixed rod (9), and one end of the drive shaft (6) is rotatably connected to the inner wall of the fixed feeding plate (14).

4. A weighing device for loading cement trucks according to claim 3, characterized in that: The upper surface of the bridge frame (4) is provided with a motor (5), and the output end of the motor (5) is fixedly connected to the other end of the transmission shaft (6).

5. A weighing device for loading cement trucks according to claim 1, characterized in that: The inner wall of the frame (1) is provided with a screw rod (10).

6. A weighing device for loading cement trucks according to claim 5, characterized in that: Screw rod 2 (11) is sleeved on the outer wall of screw rod 1 (10).

7. A weighing device for loading cement trucks according to claim 6, characterized in that: A weighing sensor (12) is fixedly connected to one end of the screw rod (11).

8. A weighing device for loading cement trucks according to claim 7, characterized in that: The outer wall of the crane hopper (2) is fixedly connected to a connecting block (13), and one end of the weighing sensor (12) is set on the inner wall of the connecting block (13).

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