Weighing module

Abstract

The invention relates to a weighing module which comprises a base and a weighing sensor, wherein the connecting side of the weighing sensor is installed on the base by a fastener; the base is provided with more than two installation holes; both side faces of the weighing sensor are connected with the wall of a spacing groove; the bearing side of the weighing sensor is provided with blind holes in a vertical direction; a top board or / and a bottom board of a frame-shaped rack is provided with installation holes; a bearing piece with spacing holes at the bottom is screwed on the top board of the frame-shaped rack and is fixed with the top board by a fastening bolt; both end surfaces of a rocking column respectively come into contact with the bottom surfaces of the blind holes and the top surfaces of the spacing holes; protective space A is arranged between the upper end surface of the weighing sensor and the bottom surface of the bearing piece; two horizontal spacing bolts are respectively installed on two side boards and positioned on both sides of the weighing sensor; and protective space B is arranged between the end surfaces of the horizontal spacing bolts and both side faces of the weighing sensor. The weighing module has the characteristics of high weighing precision, safety, reliability, convenient installation and maintenance, stable operation, low manufacturing cost and wide application range.

Description

technical field [0001] The invention relates to a weighing module used in an electronic weighing system, belonging to the technical field of electronic weighing instruments. Background technique [0002] In cement, metallurgy, chemical industry, grain processing, petrochemical and other industries, the weighing method is commonly used to measure the weight of materials or control the material level. When weighing, multiple weighing mechanisms are installed in the lower or middle part of the material tank to automatically measure the weight or level of the material in the material tank; or on one or more of the multiple supporting feet supporting the material tank The supporting feet are equipped with a weighing mechanism to measure the weight or level of the material in the tank. In order to facilitate the overall installation, to achieve simple and easy installation, convenient debugging and maintenance, the weighing mechanism adopts multiple weighing module structures, an...

AI Technical Summary

Problems solved by technology

However, the connection assembly of this structure is composed of a top plate, a support plate and a fixed plate. The top plate is provided with an upper positioning hole, and the upper and lower bearing parts are respectively installed on the upper positioning hole of the top plate and the limit hole on the fixed plate. The load cell is installed on the upper pressure-bearing part and the lower pressure-bearing part, the structure is relatively complicated, especially the column sensor must be used, which also makes the manufacturing cost higher

However, since the installation base of the load cell cannot be maintained on the same level, there will always be one or several load cell installation surfaces lower or higher than the reference level. In this case, each load cell The vertical force is different, which may cause a certain sensor to be damaged due to excessive force. Many material tanks need to be stirred during the working process. Stirring will cause the material tank to shake. In order to avoid too much shaking and cause safety accidents, a horizontal limit will be designed. To limit the shaking displacement of the material tank, it cannot be adjusted again after the installation of the horizontal limit size is completed. After the material tank has been working for a period of time, due to the deformation of the equipment and the deformation of the foundation, the horizontal limit gap becomes smaller until it is stuck, and finally Inaccurate weighing accuracy

Furthermore, because some material tanks are installed on a slope with a certain inclination angle, in this case, the load cell is not only affected by the vertical force, but also by the horizontal force, and some material tanks are installed outdoors. The module is installed in the lower part of the material tank. Under the action of wind load and earthquake load, the material tank is prone to overturning. In order to avoid the overturning of the material tank, it is necessary to consider the anti-overturning structure

The installation of many material tanks is limited by space and must be lifted for weighing. However, the pull sensor is prone to breakage under extreme tension, causing the material tank to fall from the air and easily causing accidents. At present, there is no good solution. Can do mechanical structure protection, but increase the complexity of weighing module installation

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