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Calibration device for large weighing apparatus

A technology for calibrating devices and weighing instruments, applied in the direction of weighing equipment testing/calibration, etc., can solve problems such as insufficient accuracy and easy environmental influence, and achieve the effects of high accuracy, reduced weight handling, and simple and reliable force traceability.

Pending Publication Date: 2022-05-27
METTLER TOLEDO (CHANGZHOU) MEASUREMENT TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a calibration device for large weighing instruments in order to overcome the shortcomings of the calibration method of large weighing instruments in the prior art, which are not accurate enough and are easily affected by the environment.

Method used

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  • Calibration device for large weighing apparatus
  • Calibration device for large weighing apparatus
  • Calibration device for large weighing apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] figure 1 It is a schematic structural diagram of the first embodiment of the forehead calibration device for a large scale of the present invention.

[0054] like figure 1 As shown, the present invention discloses a calibration device for a large weighing instrument, which includes a lever 10, a bracket assembly 20, a pull rod assembly 30 and a weight group 40, the weight group 40 is installed at one end of the lever 10, and the pull rod assembly 30 is installed At the other end of the lever 10, the bracket assembly 20 is mounted on the upper end face of the weighing instrument 50 to be calibrated, and supports the lever 10 upward. A downward force is applied to the scale 50 through the bracket assembly 20 by adjusting the lever assembly 30 or the bracket assembly 20 so that the lever 10 is held horizontal.

[0055] Preferably, the bracket assembly 20 in this embodiment includes a bracket 21 and a lever fulcrum 22 , the bracket 21 is placed on the weighing platform 51...

Embodiment 2

[0061] figure 2 It is a schematic structural diagram of Embodiment 2 of the forehead calibration device for large scales of the present invention.

[0062] like figure 2As shown, the present invention discloses a calibration device for a large weighing instrument, which includes a lever 10, a bracket assembly 20, a pull rod assembly 30 and a weight group 40, the weight group 40 is installed at one end of the lever 10, and the pull rod assembly 30 is installed At the other end of the lever 10, the bracket assembly 20 is mounted on the upper end face of the weighing instrument 50 to be calibrated, and supports the lever 10 upward. A downward force is applied to the scale 50 through the bracket assembly 20 by adjusting the lever assembly 30 or the bracket assembly 20 so that the lever 10 is held horizontal.

[0063] Preferably, in this embodiment, the bracket assembly 20 includes a base 23 , a bracket 21 , a first lifting mechanism 24 and a lever fulcrum 22 , the base 23 is p...

Embodiment 3

[0071] image 3 It is a schematic structural diagram of Embodiment 3 of the forehead calibration device for large scales of the present invention.

[0072] like image 3 As shown, the present invention discloses a calibration device for a large weighing instrument, which includes a lever 10, a bracket assembly 20, a pull rod assembly 30 and a weight group 40, the weight group 40 is installed at one end of the lever 10, and the pull rod assembly 30 is installed At the other end of the lever 10, the bracket assembly 20 is mounted on the upper end face of the weighing instrument 50 to be calibrated, and supports the lever 10 upward. A downward force is applied to the scale 50 through the bracket assembly 20 by adjusting the lever assembly 30 or the bracket assembly 20 so that the lever 10 is held horizontal.

[0073] Preferably, in this embodiment, the bracket assembly 20 includes a base 23 , a bracket 21 and a lever fulcrum 22 , the base 23 is placed on the weighing platform 5...

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Abstract

The invention provides a calibration device for a large weighing apparatus, the calibration device comprises a lever, a support assembly, a pull rod assembly and a weight set, the weight set is installed at one end of the lever, the pull rod assembly is installed at the other end of the lever, and the support assembly is installed on the upper end face of the weighing apparatus to be calibrated and supports the lever upwards; the lever is kept horizontal by adjusting the pull rod assembly or the support assembly, so that downward force is applied to the weighing apparatus through the support assembly. According to the calibration device for the large weighing apparatus, on the premise that the calibration precision is guaranteed, the workload of field calibration is reduced, and the calibration efficiency is improved. The weight carrying is reduced, and the time and the cost can be greatly saved. The calibration device can realize calibration automation. Compared with other weight calibration substitution methods, the calibration device is higher in precision and simpler and more reliable in force value traceability.

Description

technical field [0001] The invention relates to the field of calibration of large weighing instruments, in particular to a calibration device for large weighing instruments. Background technique [0002] In the prior art, weighing instruments are widely used in industry, agriculture, commerce, scientific research, medical and health and other departments. Weighing instruments use Hooke's law or the principle of lever balance of force to measure the mass of an object. The weighing instrument is mainly composed of three parts: a load-bearing system (such as a weighing pan), a force transmission conversion system (such as a lever force transmission system) and an indication system (such as a dial). Weighing instruments can be divided into three categories: mechanical scales, electronic scales, and electromechanical scales according to their structural principles. [0003] Mechanical scales are divided into lever scales and spring scales. According to the measurement method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G23/01
CPCG01G23/01
Inventor 李强韩锦康査玉娟华忠梁李锦利
Owner METTLER TOLEDO (CHANGZHOU) MEASUREMENT TECH CO LTD
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