Weighing method of dynamic self-discharging car scales

Abstract

The invention is applicable to an automatic weighing technology of cargo loaded in a cargotank of a self-discharging car which uses a hydraulic pump to push a support rod to further push the cargotank to be discharged, relating to a weighing method of a dynamic self-discharging car scales. The method comprises the following steps: valid weighing data by a shaft pin sensor arranged at the self-discharging car beam tail and valid weighing data by a pressure sensor connected with an oil outlet pipeline which is communicated with the hydraulic pressure support rod and is arranged at the self-discharging car beam are obtained; when calibration weight is put in one point randomly on an empty car, weight math equation is carried out on the valid weighing data by the shaft pin sensor and the valid weighing data by the hydraulic sensor to obtain weighing coefficient, thus solving the technical problem of the method that the self-discharging car can weigh the weight of the loaded cargo while loading, driving and discharging.

Description

technical field [0001] The invention relates to a weighing technology, in particular to a weighing method of a dynamic self-unloading vehicle scale, which is suitable for an automatic measurement of goods loaded in a dump truck container that uses a hydraulic pump to push a support rod and then pushes the car to unload. Heavy technology. Background technique [0002] At present, the dynamic weighing system is widely used in the weighing system of vehicles in China, such as highways, mines and ports, and plays an important role in traffic management, over-limit and overload control, and import and export supervision. [0003] There are usually two ways to weigh a loaded truck. One is to drive the loaded truck to a fixed weighbridge and then subtract the weight of the truck itself. Weighing can only be carried out locally, and it cannot be monitored at any time while the truck is loaded in a different place, and the loading volume cannot be controlled in time, which will caus...

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Problems solved by technology

[0003] There are usually two ways to weigh a loaded truck. One is to drive the loaded truck to a fixed weighbridge and then subtract the weight of the truck itself. Weighing can only be carried out locally, and it cannot be monitored at any time while the truck is loaded in a different place, and the loading volume cannot be controlled in time, which will cause certain dangers to the truck itself and driving safety, and it cannot be monitored at any time while unloading in a different place; One, such as the technical scheme disclosed in Chinese patent CN2319796: a weighing sensor is arranged between the lower part of the carriage of the truck and the vehicle beam, and a junction box and a weighing instrument connected to the sensor are arranged on the vehicle body. Although the weight method can be monitored at any time while the truck is loading, and the loading capacity of the truck can be weighed in a timely and convenient manner, this technical solution is only applicable to the fixed connection of the compartments of bulk cement trucks, oil tank trucks, and liquefied petroleum trucks relative to the vehicle beams. If the vehicle is used on a dump truck that uses a hydraulic pump to push the support rod and then push the compartment to unload, although it can also effectively monitor the dump truck at any time while loading it, and timely and conveniently weigh the loading capacity of the truck, it cannot Measure the weight of the loaded goods while unloading

[0004] At the same time, considering that in practical applications, weighing vehicles usually have complex situations such as waiting in line and unloading, resulting in the inability to guarantee the speed and accuracy of dynamic weighing, a method and system for weighing dynamic dump vehicles disclosed in Chinese published patent CN101271015 In the technical solution disclosed in , although this weighing technology can solve the weighing problem, it still needs the weighing vehicle to drive to the weighing platform at a medium and low speed before it can be implemented, and it cannot be monitored at any time while the dump truck is loading. Timely and convenient weighing of the loading capacity of the truck

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