Example of weighing machine used in concrete batching plant
In the field of construction machinery and equipment, the most common equipment is the mixing plant. In the concrete mixing plant, the use of weighing machines is extremely common. The weighing system software of concrete mixing plant is composed of weighing hopper, weighing machine, screw rod, anchor bolt, axle pin and other components. Weighing mechanical equipment plays an important role. The weighing of concrete batching plant is different from ordinary electronic weighing. It is an extreme working state, which is endangered by natural environment, temperature, environmental humidity, smoke, impact and vibration, natural environment and other factors. Therefore, how to ensure that the weighing equipment maintains high precision and high reliability under extreme working environments is of vital importance. Under the above circumstances, the application of the sensor should fully consider the following problems. 1. The rated value of the weighing equipment u003d the weight of the silo itself u003d the weighing net weight (0.6-0.7) * the total number of sensors. 2. Selection of precision of weighing machine. The working principle of the weighing machine used in the concrete mixing plant is to convert the perceived net weight data signal into an electronic signal output. The sensor's perception of the external natural environment is very fragile, so be very careful and cautious in installation, use, overhaul and maintenance, which affects the accuracy of the middle and late stages of weighing. 3. Load considerations. The weighing equipment was damaged due to overload. Therefore, whether to carry out overvoltage protection for the weighing equipment has a certain degree of danger. You must consider two main parameters: allowable load and limit load. 4. The waterproof level of the weighing machine. The waterproof layer is generally represented by IP. The working voltage does not exceed the waterproof rating of the housing of household appliances of 72.5KV. Prevent pollution and prevent short-term flooding hazards. Prevent pollution and uninterrupted flooding hazards. All safety protection measures do not include external hazards such as damage to small motors and rust. Introduction to the inductor model selection guide. Commonly used tension sensors: S-type tension sensors, plate-ring tension sensors. Common pressure-sensitive components include cantilever beams, spokes, columns, accumulation chains, twisted rings, etc. Considering factors such as accuracy, measuring range, installation method, etc., most concrete mixing plants choose fixed-supported beam weighing. Usually recommended to use the shell design. When designing the welding plan, avoid welding force as much as possible.
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