Automatic calibration device for metering of electronic scale

Abstract

The utility model relates to the technical field of electronic scale verification and calibration, in particular to an automatic calibration device for electronic scale metering, which comprises a bottom plate, the upper end face of the bottom plate is fixedly connected with a mounting frame, the lower part of the top of the mounting frame is rotatably connected with a rotating shaft, and the bottom end of the rotating shaft is fixedly connected with a liquid box. A traction rope is arranged on the outer wall of the electric reel, the rotating shaft is started to drive the whole liquid box to rotate, after the next calibration box needing to be placed is located in the middle, the steps are repeated again, the multiple calibration boxes are placed and weighed, numerical values are recorded, and verification and calibration of the electronic scale can be completed after multiple load point values are detected and recorded. According to the device, the plurality of calibration boxes are arranged, and the liquid volume in the calibration boxes is independently controlled, so that the weight distribution of the calibration boxes can be carried out in advance according to load points such as the minimum weighing amount, the half maximum weighing amount and the maximum weighing amount of the electronic scale, the liquid does not need to be repeatedly sucked during calibration, the operation is simple and convenient, and the working efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic scale verification and calibration, in particular to an automatic calibration device for electronic scale measurement. Background Art

[0002] At present, the verification and calibration of electronic scales are generally completed by weights. Since the mass of the weights is fixed, and the specifications and models of the electronic scales to be tested are various, the corresponding test values are also different. For example, the minimum weighing capacity, half of the maximum weighing capacity, and maximum weighing capacity of different models of electronic scales are different. Therefore, different weights are needed during testing. For general enterprises, since the models of electronic scales they produce are fixed, the types of weights required are not many. However, for quality inspection agencies, there are various models of electronic scales submitted for inspection. Therefore, the quality inspection agencies need to be equipped with a variety of different weights, which is not only costly, but also problematic to manage so many weights.

[0003] A Chinese patent (patent number: CN112414533A, disclosing an automatic calibration device for electronic scales with stepless adjustment) can complete the calibration of electronic scales without using weights, eliminating the trouble of managing a large number of weights, effectively reducing the high cost of purchasing weights for appraisal institutions, and correspondingly reducing the calibration costs. It is easy to operate, saving time and effort;

[0004] However, when the above device is actually used, it is necessary to repeatedly add liquid to the calibration box or extract the liquid from the calibration box in order to record and calibrate the load points such as the minimum weighing capacity, half the maximum weighing capacity, and the maximum weighing capacity of the electronic scale. The overall operation is relatively cumbersome and the work efficiency is low. Utility Model Content

[0005] The utility model aims to provide an automatic calibration device for electronic scale measurement, which has the characteristics of no need to repeatedly pump liquid during calibration, simple and convenient operation, and higher work efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic calibration device for electronic scale measurement, comprising a base plate, an upper end surface of the base plate fixedly connected to a mounting frame, a rotating shaft rotatably connected to the bottom of the top of the mounting frame, a liquid tank fixedly connected to the bottom end of the rotating shaft, a plurality of evenly distributed electric reels installed on the upper end surface of the liquid tank, a pulling rope provided on the outer wall of the electric reel, the other end of the pulling rope extends to the bottom of the liquid tank and is fixedly connected to a digital display dynamometer, a calibration box is provided at the bottom end of the digital display dynamometer, a plurality of bidirectional water pumps are installed on the lower end surface of the liquid tank, the output ends of the plurality of bidirectional water pumps are connected to liquid guide tubes, and the other ends of the plurality of liquid guide tubes extend to the interior of a plurality of calibration boxes respectively.

[0007] In order to facilitate the lifting and lowering of the placement plate, as an automatic calibration device for electronic scale measurement in the present invention, a cylinder is installed on the upper end surface of the base plate, the output end of the cylinder is fixedly connected to the placement plate, and multiple telescopic rods are fixedly connected between the placement plate and the base plate.

[0008] In order to facilitate the disassembly of the calibration box, as an automatic calibration device for electronic scale measurement in the present invention, the bottom end of the digital display dynamometer is fixedly connected to a hook, the upper end surface of the calibration box is fixedly connected to a plurality of hanging ropes, and the other ends of the plurality of hanging ropes are fixedly connected to hanging rings, and the hanging rings are detachably connected to the outer wall of the hook.

[0009] In order to guide the pulling rope, as an automatic calibration device for electronic scale measurement in the present invention, the upper end surface of the liquid tank is rotatably connected to a plurality of guide wheels, and the side wall of the liquid tank is fixedly connected to a plurality of evenly distributed rope grooves, and the plurality of pulling ropes pass through the plurality of guide wheels and rope grooves respectively.

[0010] In order to facilitate driving the liquid tank to rotate, as an automatic calibration device for electronic scale measurement in the present invention, a motor is installed on the top of the mounting frame, the output end of the motor is fixedly connected to the rotating shaft, and rubber pads are embedded in the four corners of the upper end surface of the placement plate.

[0011] In order to facilitate the operation and control of the equipment, as an automatic calibration device for electronic scale measurement of the present invention, a control panel is installed on the outer wall of the installation frame, and the electric reel, digital display dynamometer, bidirectional water pump, cylinder and motor are all electrically connected to the control panel.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] First, control one of the electric reels in sequence to unwind so that the corresponding calibration box falls completely on the electronic scale. At this time, the tension value detected by the digital force gauge corresponding to the calibration box is zero, indicating that the pulling rope does not pull the calibration box, and the pressure on the electronic scale is the load point value detected by the digital force gauge before. Then observe and record the value displayed on the electronic scale. After recording, start the shaft to drive the entire liquid tank to rotate so that the next calibration box to be placed is in the middle position. Repeat the above steps again, place and weigh multiple calibration boxes and record the values. After detecting and recording multiple load point values, the verification and calibration of the electronic scale can be completed. The device sets multiple calibration boxes and independently controls the liquid capacity inside the calibration box, so that the weight distribution of the calibration box can be carried out in advance according to the minimum weighing capacity, half of the maximum weighing capacity, maximum weighing capacity and other load points of the electronic scale. There is no need to repeatedly pump liquid during calibration. The operation is simple and convenient, and the work efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall main structural diagram of the utility model;

[0015] Figure 2 This is an enlarged structural diagram of part a of the utility model;

[0016] Figure 3 This is a top view of the placement plate structure of the utility model.

[0017] In the figure: 1. Base plate; 2. Mounting frame; 3. Rotating shaft; 4. Liquid tank; 5. Electric reel; 6. Pull rope; 7. Digital dynamometer; 8. Calibration box; 9. Bidirectional water pump; 10. Liquid guide tube; 11. Placement plate; 12. Cylinder; 13. Hook; 14. Hanging rope; 15. Hanging ring; 16. Guide wheel; 17. Rope groove; 18. Telescopic rod; 19. Motor; 20. Control panel; 21. Rubber pad. DETAILED DESCRIPTION

[0018] See also Figures 1 to 3 , an automatic calibration device for electronic scale measurement, including a base plate 1, the upper end surface of the base plate 1 is fixedly connected to a mounting frame 2, the top and lower part of the mounting frame 2 are rotatably connected to a rotating shaft 3, the bottom end of the rotating shaft 3 is fixedly connected to a liquid tank 4, the upper end surface of the liquid tank 4 is installed with a plurality of evenly distributed electric reels 5, the outer wall of the electric reel 5 is provided with a pulling rope 6, the other end of the pulling rope 6 extends to the bottom of the liquid tank 4 and is fixedly connected to a digital display tension gauge 7, the bottom end of the digital display tension gauge 7 is provided with a calibration box 8, the lower end surface of the liquid tank 4 is installed with a plurality of bidirectional water pumps 9, the output ends of the plurality of bidirectional water pumps 9 are connected to a liquid guide tube 10, and the other ends of the plurality of liquid guide tubes 10 respectively extend to the interior of the plurality of calibration boxes 8.

[0019] In this embodiment: when performing calibration work, the electronic scale to be calibrated is placed on the upper end of the placement plate 11, and the cylinder 12 is started to drive the placement plate 11 to rise, thereby moving the electronic scale to a suitable height, and further by inputting the minimum weighing capacity, half of the maximum weighing capacity, maximum weighing capacity and other load points of the electronic scale into the control panel 20, the control panel 20 simultaneously controls the operation of multiple two-way water pumps 9 according to the load value input by the detection personnel to inject the liquid in the liquid tank 4 into multiple calibration boxes 8 through the liquid guide tube 10. At this time, different capacities of liquid are injected into the multiple calibration boxes 8, and the digital display tensile gauges 7 above the multiple calibration boxes 8 detect the tension of the calibration boxes 8 in real time, and display it on the display screen of the digital display tensile gauge 7. When the tension value displayed on the display screen reaches the load point value to be detected, the control panel 20 controls the corresponding two-way water pump 9 to stop rotating, and then controls one of the electric reels 5 to unwind in sequence, so that the The corresponding calibration box 8 falls completely on the electronic scale. At this time, the tension value detected by the digital display force gauge 7 corresponding to the calibration box 8 is zero, indicating that the pulling rope 6 does not pull the calibration box 8, and the pressure on the electronic scale is the load point value detected by the digital display force gauge 7 before. Then observe and record the value displayed on the electronic scale. After recording, start the rotating shaft 3 to drive the entire liquid tank 4 to rotate, so that the next calibration box 8 to be placed is in the middle position, and then repeat the above steps again. Multiple calibration boxes 8 are placed and weighed and the values are recorded. After the detection and recording of multiple load point values, the verification and calibration of the electronic scale can be completed. The device sets multiple calibration boxes 8 and independently controls the liquid capacity inside the calibration box 8, so that the weight distribution of the calibration box 8 can be carried out in advance according to the minimum weighing capacity, half of the maximum weighing capacity, maximum weighing capacity and other load points of the electronic scale. There is no need to repeatedly pump liquid during calibration, the operation is simple and convenient, and the work efficiency is higher.

[0020] As a technical optimization solution of the present invention, a cylinder 12 is installed on the upper end surface of the base plate 1, and the output end of the cylinder 12 is fixedly connected to the placement plate 11. A plurality of telescopic rods 18 are fixedly connected between the placement plate 11 and the base plate 1.

[0021] In this embodiment, a cylinder 12 is installed on the upper end surface of the base plate 1, and the cylinder 12 drives the placement plate 11 to rise and fall, while the telescopic rod 18 limits and supports the placement plate 11 to improve the lifting stability.

[0022] As a technical optimization solution of the present invention, the bottom end of the digital dynamometer 7 is fixedly connected to a hook 13, the upper end surface of the calibration box 8 is fixedly connected to a plurality of hanging ropes 14, and the other ends of the plurality of hanging ropes 14 are fixedly connected to a hanging ring 15, which is detachably connected to the outer wall of the hook 13.

[0023] In this embodiment, the hanging ring 15 is detachably connected to the outer wall of the hook 13, so that the calibration box 8 can be easily disassembled for easy cleaning.

[0024] As a technical optimization solution of the present invention, the upper end surface of the liquid tank 4 is rotatably connected to a plurality of guide wheels 16, and the side wall of the liquid tank 4 is fixedly connected to a plurality of evenly distributed rope grooves 17, and a plurality of pulling ropes 6 pass through the plurality of guide wheels 16 and rope grooves 17 respectively.

[0025] In this embodiment, the guide wheel 16 and the rope groove 17 both play the role of guiding the pulling rope 6, so that the calibration box 8 moves more smoothly.

[0026] As a technical optimization solution of the present invention, a motor 19 is installed on the top of the mounting frame 2, the output end of the motor 19 is fixedly connected to the rotating shaft 3, and rubber pads 21 are embedded in the four corners of the upper end surface of the placement plate 11.

[0027] In this embodiment, the output end of the motor 19 is fixedly connected to the rotating shaft 3 to facilitate the rotation of the liquid tank 4. The rubber pad 21 increases the friction between the bottom of the electronic scale and the placement plate 11 to make it more stable.

[0028] As a technical optimization solution of the present invention, a control panel 20 is installed on the outer wall of the mounting frame 2 , and the electric reel 5 , digital dynamometer 7 , bidirectional water pump 9 , cylinder 12 and motor 19 are all electrically connected to the control panel 20 .

[0029] In this embodiment, the control panel 20 is convenient for receiving the signal of the digital dynamometer 7 and convenient for controlling the operation of the electric reel 5 , the two-way water pump 9 , the cylinder 12 and the motor 19 .

[0030] Working principle: When performing calibration, the electronic scale to be calibrated is placed on the upper end of the placement plate 11, and the cylinder 12 is started to drive the placement plate 11 to rise, thereby moving the electronic scale to a suitable height, and further inputting the minimum weight, half of the maximum weight, maximum weight and other load points of the electronic scale into the control panel 20. The control panel 20 controls the movement of multiple two-way water pumps 9 at the same time according to the load value input by the inspection personnel to inject the liquid in the liquid tank 4 into multiple calibration boxes 8 through the liquid guide tube 10. At this time, different capacities of liquid are injected into the multiple calibration boxes 8, and the digital display tensile gauge 7 above the multiple calibration boxes 8 detects the tension of the calibration box 8 in real time, and displays it on the display screen of the digital display tensile gauge 7. When the tension value displayed on the display screen reaches the load point value to be detected, the control panel 20 controls the corresponding two-way water pump 9 to stop rotating, and then controls one of the electric reels 5 to unwind in sequence, so that the calibration boxes 8 are aligned with the load value of the electronic scale. The corresponding calibration box 8 falls completely on the electronic scale. At this time, the tension value detected by the digital display force gauge 7 corresponding to the calibration box 8 is zero, indicating that the pulling rope 6 does not pull the calibration box 8, and the pressure on the electronic scale is the load point value detected by the digital display force gauge 7 before. Then observe and record the value displayed on the electronic scale. After recording, start the rotating shaft 3 to drive the entire liquid tank 4 to rotate, so that the next calibration box 8 to be placed is in the middle position, and then repeat the above steps again. Multiple calibration boxes 8 are placed and weighed and the values are recorded. After the detection and recording of multiple load point values, the verification and calibration of the electronic scale can be completed. The device sets multiple calibration boxes 8 and independently controls the liquid capacity inside the calibration box 8, so that the weight distribution of the calibration box 8 can be carried out in advance according to the minimum weighing capacity, half of the maximum weighing capacity, maximum weighing capacity and other load points of the electronic scale. There is no need to repeatedly pump liquid during calibration, the operation is simple and convenient, and the work efficiency is higher.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic calibration device for electronic scale measurement, comprising a base plate (1), characterized in that: The upper end surface of the base plate (1) is fixedly connected to a mounting frame (2), a rotating shaft (3) is rotatably connected to the lower part of the top of the mounting frame (2), the bottom end of the rotating shaft (3) is fixedly connected to a liquid tank (4), the upper end surface of the liquid tank (4) is installed with a plurality of evenly distributed electric reels (5), the outer wall of the electric reel (5) is provided with a pulling rope (6), the other end of the pulling rope (6) extends to the bottom of the liquid tank (4) and is fixedly connected to a digital display tension meter (7), the bottom end of the digital display tension meter (7) is provided with a calibration box (8), the lower end surface of the liquid tank (4) is installed with a plurality of bidirectional water pumps (9), the output ends of the plurality of bidirectional water pumps (9) are all connected to a liquid guide tube (10), and the other ends of the plurality of liquid guide tubes (10) respectively extend to the interior of a plurality of calibration boxes (8).

2. The automatic calibration device for electronic scales according to claim 1, characterized in that: A cylinder (12) is installed on the upper end surface of the base plate (1), the output end of the cylinder (12) is fixedly connected to a placement plate (11), and a plurality of telescopic rods (18) are fixedly connected between the placement plate (11) and the base plate (1).

3. The automatic calibration device for electronic scale measurement according to claim 1, characterized in that: The bottom end of the digital dynamometer (7) is fixedly connected to a hook (13), the upper end surface of the calibration box (8) is fixedly connected to a plurality of hanging ropes (14), the other ends of the plurality of hanging ropes (14) are fixedly connected to a hanging ring (15), and the hanging ring (15) is detachably connected to the outer wall of the hook (13).

4. The automatic calibration device for electronic scales according to claim 1, characterized in that: The upper end surface of the liquid box (4) is rotatably connected to a plurality of guide wheels (16), and the side wall of the liquid box (4) is fixedly connected to a plurality of evenly distributed rope grooves (17), and the plurality of pulling ropes (6) pass through the plurality of guide wheels (16) and rope grooves (17) respectively.

5. The automatic calibration device for electronic scales according to claim 2, characterized in that: A motor (19) is installed on the top of the installation frame (2), the output end of the motor (19) is fixedly connected to the rotating shaft (3), and rubber pads (21) are embedded at the four corners of the upper end surface of the placement plate (11).

6. The automatic calibration device for electronic scales according to claim 5, characterized in that: A control panel (20) is installed on the outer wall of the installation frame (2), and the electric reel (5), digital dynamometer (7), two-way water pump (9), cylinder (12) and motor (19) are all electrically connected to the control panel (20).

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