A Brief Discussion on the Development History of Portable Axle Weigh Pads

A Brief Discussion on the Development History of Portable Axle Weigh Pads

Keywords: portable axle weigh pads, wheel load scale, wheel load weighers, portable axle weigh pad, wheel weighers, axle scale, weigh pad, dynamic weighing system, Static weighing scale, portable truck scales

Portable axle weigh pads, also known as wheel load scale, wheel load weighers, portable axle weigh pad, wheel weighers, axle scale and weigh pad etc. It is mainly used in the fields of automobile manufacturing and inspection. By dynamically passing or stationary the car on a weighing platform of a certain width, the weight of each wheel is weighed by the weigh pad platform, and then the axle weight and overall weight of the car are accumulated. Based on certain standards, the stability of the car design and other functions are determined. It is one of the commonly used calibration standard tools in the fields of automobile manufacturing and automobile inspection!

The working principle of the portable axle weigh pads is as follows: when the car tire is subjected to heavy pressure on the weigh pad platform, the weighing platform sensor will release a voltage signal, and the output signal size is proportional to the weight of the tire. The signal is transmitted to the amplifier for amplification, and then converted into a digital signal by the analog-to-digital converter for display on the monitor. The value obtained from a single axle scale board is the wheel weight of the car, while two axle scale boards are the axle weight. Based on the axle type of the car, the total weight of the car can be accumulated.

The working principle of the weighing sensor of the portable axle weigh pads is as follows: when the weigh pad platform is compressed and deformed, it will change the resistance value of the resistance strain gauge in the sensor, thereby changing the output of the signal.

Portable axle weigh pads are divided into wired wheel load scale and wireless wheel load scale:

Portable wheel load scale are divided into wired and wireless data transmission types. Initially, most overloading control units used wired wheel load weighers. Later, due to the easy breakage of the wires of wired wheel load weighers, most overloading control units now use wireless wheel load weighers. With the development of technology, the instruments of wireless wheel load weighers have become more user-friendly, mainly including "dot matrix" and "LCD touch screen". But the most important issue is still the sensor. Currently, there are two types of sensors on the market, one is integrated and the other is embedded. The difference between these two types of sensors is significant, and their technical content is also very high. From the perspective of design and use, integrated sensors are widely recognized both domestically and internationally, and are also the most ideal sensors for practical use.

Portable wheel weighers structure:

There are two types of sensors used for wheel weighers sensors, namely embedded structural sensors and integrated structural sensors. Currently, embedded structural sensors are more popular in the market. Embedded structure sensors have advantages such as higher pressure resistance and higher accuracy compared to previous integrated sensors.

Definition of integrated sensor: The entire weigh pad board is a sensor without mechanical connections, which is very suitable for long-term crushing of heavy vehicles. Therefore, this type of sensor has a very low failure rate, is sturdy and durable, and has high accuracy.

Embedded sensor definition: Installing multiple sensors in series between two weigh pad steel plates or under one steel plate. Such weigh pad plates have many mechanical connection structures, and these mechanical connections often do not meet the strength requirements, mainly because the axle scale weighing plate is too thin. In the case of long-term heavy vehicle crushing, the mechanical connection structure will have irreparable problems;

The main uses of Portable Truck Scales are:

The axle load scale has the characteristics of small footprint, minimal foundation construction, easy relocation, and dual-use of dynamic and static.

Portable axle scales can be widely used for weighing and measuring low value materials in industries such as transportation, construction, energy, and environmental protection; Trade settlement between factories, mines, and enterprises, as well as axle scale load testing for transportation companies. The axle scale measures quickly and accurately, is easy to operate and use, and is easy to install and maintain. A product obtained by weighing the axle or axle group weight of a vehicle and accumulating it to obtain the overall weight of the vehicle. Dynamic weighing system of wheel load scale on roads, low precision wheel load scale for cargo weighing, or high-precision Static weighing scale. Its main feature is the stable and reliable microwave communication method used between the axle scale platform and the instrument, which avoids the inability to detect due to water ingress, moisture or vehicle crushing caused by signal line interfaces, effectively improving the efficiency of equipment use. By adopting digital wireless transmission, the phenomenon of wire breakage is completely avoided, making it more convenient for customers to use. The use of ultra-high carrier frequency wireless transmission technology greatly improves the system's anti-interference ability and provides technical support for the dynamic weighing system measurement accuracy of the system. The overall layout is simple, the axle scale weighing platform is thin, lightweight, and easy to carry. The axle scale platform adopts a structure of high-strength aluminum alloy weighing platform with multiple sealed sensors embedded at the bottom, which has high weighing accuracy and good sealing effect. The high-quality rubber shaded slope surface adopts a double anti slip pattern design, exquisite and beautiful, firm and durable. The dovetail groove is used to connect with the base plate to prevent separation between the base plate and the ramp. The axle scale platform is made of ultra-high strength aviation aluminum alloy. The outer surface of the table is treated with high-quality military grade alumina to improve wear resistance and corrosion resistance. The overall dynamic weighing system signal response speed is fast and the frequency is high.

Development history of portable truck scales:

The development speed of portable car weighing instruments is very fast. Initially, law enforcement agencies used wired connections to portable axle weigh pads. Due to the easy breakage of the connecting wire of this product by large tonnage vehicles, the weighing instrument discovered this problem and quickly convened a research and development team to study the issue of the easy breakage of the connecting wire of portable axle weigh pads. Later, wireless portable axle weigh pads gradually replaced wired weighing instruments.

Portable truck scales are now widely used on highways and in every corner where overloading and exceeding limits occur! Let's delve into the development history of portable truck scales together!

A few years ago, portable axle weigh pads were mainly used by overloading control units to manage overloading. Due to the serious phenomenon of vehicle overloading and significant damage to roads, a road requires more overloading control points. In order to facilitate overloading control units to set up overloading control points "anytime, anywhere", portable axle weigh pads have been used.

Analysis of the Development Prospects of Portable Truck Scale Testing Equipment: Analysis of the Development Prospects of portable axle weigh pad Testing Equipment: After conducting market research and visits on weighing fees and over limit control testing equipment, the analysis report is as follows: Dynamic weighing system technology has been developed for more than 30 years, and different manufacturers have developed different skills to carry out dynamic weighing. Therefore, various types of sensors have emerged, which can usually be divided into the following categories according to different principles: Bending plate sensor: Bending plate sensor is a strain sensor that uses an integrated strain gauge network to measure according to the principle of deformation of the weigh pad weighing plate after compression.

A new chapter in dynamic weighing system:

With the progress of society, dynamic weighing system is also being updated and replaced. The combination of the advantages and disadvantages of vehicle type and single type dynamic weighing system gave birth to the axle group dynamic weighing system. The axle group dynamic portable weighing scale is a newly developed dynamic weighing system that considers the accuracy of the axle scale weighing scale, installation cost, construction progress, and safety system. The axle group dynamic portable weighbridge consists of a axle scale weighing platform and four weighing sensors. One axle scale weighing sensor is placed in each area of the upper and lower scales along the direction of vehicle travel. The two pairs of sensors can recognize the direction of vehicle travel and weigh the axle scale load of the vehicle twice during vehicle passage. The processor compares the two sets of values, eliminates erroneous values, and calculates the displayed value that is closer to the true weight of the vehicle, thereby ensuring accuracy and avoiding vehicle behavior.