Points to pay attention to during the construction of weighing scales

At present, the platform has been widely used in production and daily life, but the weight of people's production and living materials has been found to be a long-term test of the weighing scale. When the weighing scale has problems, due to the installation of many. In this article, the main focus of the problem is to introduce the process, principles, and measures to address issues related to the installation of weighing scales at the selected location, excavation of pits, building foundations, embedding of prefabricated rods, positioning of weighing bodies, and wiring.

1. Basic construction requirements

There are usually two types of ground heavy installations, one without foundation pit and the other installed in shallow foundation pit. The surface of the shallow foundation pit can be level with the ground, and the site is unobstructed and aesthetically pleasing. The weighing platform without foundation pit is higher than the ground, easy to maintain, and cost-effective. In general, the installation method for weighing platforms without foundation pits is preferred. Heavy objects on the ground must be laid on a concrete foundation to avoid soft soil. If there is no alternative area due to site limitations, it must be reinforced and drainage facilities must be constructed to prevent heavy ground objects from being submerged by floods. During construction, the concrete grade should be ensured, and the correct positions of the anchor bolts and cast iron base plates, as well as the embedded parts, should not be displaced. The secondary grouting method can be used for the positioning of anchor bolts and cast iron base plates. The level and elevation of each cast iron pad must meet the requirements of the design drawings, with a height difference of no more than 3mm within the same plane.

2. Measures to prevent lightning strikes

At present, microelectronics technology has been widely used in electronic measuring machines, but it is extremely sensitive to external interference such as overvoltage, overcurrent, and electromagnetic pulses, and has extremely low tolerance. In order to ensure the stability of the system and prevent lightning damage, measures have been determined in the design and installation according to the requirements of Lei Jileqing. Lightning strikes can be divided into two forms. Seed is direct lightning. This type of lightning strike causes significant damage to the system, but the probability of it happening to the weighbridge is very low. Another type is induced lightning strikes, which manifest as the generation of electromagnetic fields that cause overvoltage or overcurrent in the system. The main effect of this lightning strike is uneven distribution of charges. The damage caused by electrostatic induction to local overvoltage electronic devices. According to reports, this voltage can sometimes reach tens of kilovolts, enough to damage poorly grounded electronic products. To reduce or eliminate the impact of lightning strikes on ground scales, the following measures can be taken:

Install lightning rods. As an important measure in lightning protection systems, lightning rods can also play an important role in the protection of automotive electronic weighing systems. In the design of lightning rods, the length of the lightning rod should be determined based on the length of the car scale, and grounding work should be done according to relevant standards.