Multi-parallel girder weighing sensor

A load cell, parallel beam type technology, applied in the field of load cell, electronic weighing apparatus, four parallel beam type load cell, can solve the unbalanced load error of bridge sensor or column sensor, the structure is not compact and reasonable, not Easy to install and use, etc., to achieve the effects of high precision, strong anti-eccentric load capacity, and high measurement accuracy

Pending Publication Date: 2017-07-04
KELI SENSING TECH NINGBO CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the structure is not compact and reasonable, and it is not easy to install and use.
[0005] At present, in the field of electronic weighing instruments such as truck scales, bridge-type or column-type load cells are more widely used, but bridge-type sensors or colum

Method used

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] Such as Figure 1~2 As shown, the four-parallel beam load cell of this embodiment includes an elastic body 1, a strain gauge 4 and a sleeve 2 arranged on the elastic body 1, the elastic body 1 is a cross-shaped beam structure integrally formed, and the elastic body 1 includes a base 14, the base 14 is cylindrical with a circular inner hole, the bottom edge of the base 14 is provided with a number of threaded holes 141 for sensor installation and positioning, and the bottom of the base 14 corresponds to the position of the circular inner hole. A base plate 5 is provided, and four support columns 11 are arranged vertically upward at even intervals near the edge of the base 1 on the base 1. The inner sides of the support columns 11 extend inward respectively to form four horizontal strain beams 12, and the four strain beams 12 are connect...

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Abstract

A multi-parallel girder weighing sensor comprises an elastomer and a strain gage arranged on the elastomer. The multi-parallel girder weighing sensor is characterized in that: the elastomer comprises a pedestal, a plurality of support columns are uniformly and vertically upwards arranged at intervals at the position, close to the edge of the pedestal, on the pedestal, the internal sides of the support columns are extended inwards to form a plurality of horizontal strain beams, a plurality of the strain beams are mutually connected to form girder structure of central ray distribution, a bearing head is protruded at the center intersection of a plurality of strain beams, a strain beam area is formed between the bottom of the bearing head and the pedestal, and strain gages are arranged at the lower surface of a plurality of strain beams. The elastomer is integrated girder structure of central ray distribution, and is high in precision and high in load-deflection resistance capability, the support portion and the strain portion are arranged on the pedestal, the external portion is welded and sealed with the pedestal through a sleeve, and the middle bearing portion employs steel ball loading or pressure head loading mode. The multi-parallel girder weighing sensor is reasonable in structure, high in measurement precision and high in load-deflection resistance capability, and can be applied to the electronic weighing instrument field such as an electronic truck scale.

Description

technical field [0001] The invention belongs to the technical field of electronic weighing instruments, and relates to a weighing sensor, in particular to a four-parallel beam type weighing sensor, which is applied to electronic weighing instruments such as truck scales. Background technique [0002] Sensors with parallel beam structure are widely used in weighing fields such as platform scales and belt scales. The parallel beam sensor is based on such a principle: the elastic body (elastic element, sensitive beam) produces elastic deformation under the action of external force, so that the resistance strain gauge (conversion element) pasted on its surface is also deformed. After the resistance strain gauge is deformed, it The resistance value of the sensor will change (increase or decrease), and then the corresponding measurement circuit will convert this resistance change into an electrical signal (voltage or current), thus completing the process of converting the external...

Claims

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Application Information

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IPC IPC(8): G01G3/14
CPCG01G3/1402
Inventor 朱炜道胡文辉姚玉明柯建东
Owner KELI SENSING TECH NINGBO CO LTD
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