High-rigidity and low-unbalance-load weighing pallet and manufacturing method thereof

Abstract

The invention discloses a high-rigidity and low-unbalance-load weighing pallet which comprises a first support platform, a second support platform and a cantilever sensor, and the first support platform and the second support platform are fixedly connected with the cantilever sensor through welding. The first support platform and the second support platform are asymmetrically arranged relative to a center line in the length direction passing through the mass center of the cantilever sensor and symmetrically arranged relative to a center line in the width direction passing through the mass center of the cantilever sensor, and the areas of the first support platform and the second support platform are different. The beneficial effects are that pallets are integrated through welding, and the problem of large measurement errors is fundamentally solved; the mass center of the first support platform and the mass center of the second support platform do not coincide with the mass center of the sensor, so that the problem of unbalance loading and unbalance in actual operation is solved; and the unbalance loading requirements and rigidity requirements of different degrees are met through the design that the loading areas of the first support platform and the second support platform are unequal.

Description

technical field [0001] The invention relates to the field of weighing measurement, in particular to a weighing pallet with high rigidity and low eccentric load and a manufacturing method thereof. Background technique [0002] Commonly used weighing principles in the field of physical weighing measurement include: 1) balance method, which uses weights and other balance weights to achieve moment balance conversion; 2) elastic deformation method, which uses a specific relationship between solid deformation and force conversion; 3) fluid Balance method, using liquid pressure or its own mass to achieve balance conversion; and 4) Electromagnetic balance method, through balance conversion by the relationship of magnetic, electromagnetic or electrostatic effects. Among them, weighing instruments using the elastic deformation method are widely used in the national economy because of their advantages such as simple structure, convenient operation, high reliability, and high precision....

AI Technical Summary

Problems solved by technology

In existing weighing devices of this type, eccentric load errors (or called four-corner errors) and creep errors have a greater impact on weighing measurement accuracy and are relatively difficult to control. Verification Regulations - JJG669-2003" reflected in the repeatability error of the sensor

The appearance of these two types of errors and their influence have a great relationship with the structure of the weighing device itself. When measuring the area on a plane, the moment generated by the weight farther away from the center of symmetry may be close to the moment of the weight closer to the center of symmetry, which causes an unbalanced load error in the weighing device, and at the same time, a larger moment also causes a larger creep rate

Existing technologies often rely on algorithm-level design to ensure creep errors, which is insufficient in applicability

However, there are no good suppression measures for unbalanced load errors, especially when using cantilever sensors.

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