The development of electronic crane scales is becoming more and more automated!
The electronic crane scale is an electronic scale that is displayed by the digital display of the balance of the weight of the items on the pedestal, the disk and the hook of the scale. The electronic crane scale integrates machine, electricity and instrument, and has the characteristics of multi-function, high-precision, fast and dynamic measurement, stable and reliable, etc., representing the development direction of weighing products. The electronic crane scale is a daily-use scale and is a labor-intensive product.
The general development trend of electronic crane scale products is miniaturization, modularization, integration and intelligence; its technical performance tends to be high speed, high accuracy, high stability and high reliability; its function tends to control weighing and weighing The "intelligence" function of both information and non-control information; its application performance tends to be comprehensive and combinable.
(1) miniaturization
In recent years, the newly developed electronic platform scale structure fully reflects the development direction of small size, low height and light weight (ie small, thin and light). For low-capacity electronic platform scales and electronic axle scales, a thin or ultra-thin circular load cell can be directly embedded in the blind hole of the bottom surface of the steel plate or aluminum plate and the outer diameter of the load cell to form a low-profile scale. Body structure, the number and position of load cells are determined by the rated load and mechanical requirements of the scale.
(2) Modular
For large or very large carrier structures, such as large static and dynamic electronic truck scales, modules of standard construction of several lengths have been adopted, and new varieties and specifications have been produced through split combination. Taking 3 standard modules of the same width of 5, 6, and 7 m as an example, a single block, two blocks, three blocks, and four blocks can be combined into 22 types of split scales with a length of 5 to 28 m. structure. Of course, in practical applications, according to the needs of users in various industries, more than 10 commonly used standard specifications can be selected. This modular split-type scale structure not only improves the versatility, interchangeability and reliability of the product, but also greatly improves production efficiency and product quality. At the same time, it also reduces costs and enhances the market competitiveness of enterprises. (3) Integration
Certain types and structures such as small electronic platform scales, special scales, portable static and dynamic electronic axle scales, static and dynamic electronic railway scales, etc., can realize scale body and load cell, rail and load cell, rail scale body and railway line Integration.
(4) Intelligent
The weighing display controller of the electronic crane scale is combined with an electronic computer to increase the function of the weighing display controller by using the intelligence of the electronic computer. On the basis of the original functions, the electronic crane scale adds functions such as reasoning, judgment, self-diagnosis, self-adaptation and self-organization. This is the electronic crane scale using microcomputerized weighing display controller on the market today and adopts intelligent weighing. The fundamental difference of the electronic crane scale of the display controller.
(5) Comprehensive
The development law of electronic weighing technology is to continuously strengthen basic research and expand application, expand new technology fields, penetrate into adjacent disciplines and industries, and integrate various technologies to solve problems such as weighing measurement, automatic control and information processing. For example, in the flow metering profession, if a standard large flow measuring system is constructed according to conventional theories and methods, the price is quite expensive. If the weighing method, that is, the mass flow method, is used, the measurement of the large flow rate can be solved as long as the weight and time are accurately measured. For some commercial electronic pricing scales, it is far from enough to only weigh, price, display and print. Modern commercial systems also require it to provide various sales information, and closely combine weighing and management automation. Heavy, pricing, storage, sales management integration, to achieve management automation. This requires electronic pricing scales to be networked with electronic computers, and the weighing system and computer system form a complete integrated control system.
Insufficient existing portable scales and electronic crane scales
The existing portable scale is a steel scale with a steel scale or a spring compression and tensile deformation, and the basic scale used by the resident users is a steel scale. This kind of wooden pole scale that has been in China for more than 2,000 years, the State Administration for Industry and Commerce and the State Bureau of Technical Supervision issued the ban on the use of steelyards in the national urban and rural farmers market and fixed stalls as early as January 1, 1995. According to the economic development of each place, the provinces, municipalities and autonomous regions have set deadlines for the elimination of steelyards in various regions [7]. Spring roller scale manufacturing process requirements are high, the spring fatigue problem can not be completely solved, once the spring elastic limit is exceeded, the spring balance will produce a large error, and even damage, affecting the accuracy and reliability of weighing, just a temporary substitute Also included in the gradual cancellation of the ranks.
In recent years, spring scales and desktop electronic pricing scales have been widely used in farmers' markets and other commercial activities. The spring scale is allowed to be used in the late 1980s with the advantages of simple construction, small size and low price. As a 4-level scale, the spring scale is superior to the scale in terms of accuracy, durability and anti-fraud, and is therefore widely used in the farmer's market. In recent years, the quality problems of spring disc scales are more prominent. Several times of supervision and spot checks, the sampling pass rate of products is between 40% and 60%. The problem of the spring degree disc scale product is mainly that the measurement accuracy is seriously out of tolerance, the double-sided indication value is not synchronized, the product strength is low, and the service life is short.
It can be seen that China is still in a very backward situation in the use of electronic crane scales. In 1994, the penetration rate of electronic crane scales in the United States was 90%, Japan was 65%, and China was only 3.6%.
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Over-limit car weighing instrument http://yiyu02.yiyush.cn
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