CN201364197Y

CN201364197Y - High-precision dynamic weighing instrument

Info

Publication number: CN201364197Y
Application number: CNU2009200322669U
Authority: CN
Inventors: 王建军
Original assignee: BAOJI FOUR-DIMENSIONAL SCALES CO LTD
Current assignee: BAOJI FOUR-DIMENSIONAL SCALES CO LTD
Priority date: 2009-03-10
Filing date: 2009-03-10
Publication date: 2009-12-16
Anticipated expiration: 2019-03-10

Abstract

The utility model provides a high-precision dynamic weighing instrument, which overcomes the universal problem of low weighing precision of road weigh charge for axle-weight vehicle scale at present. The high-precision dynamic weighing instrument comprises a scale body of a load bearing vehicle, weighing sensors, a data processor and the like, wherein the weighing sensors are mounted at four corners of the scale body; and the weighing sensors are switched in a data processor. A gap between the scale body and a frame is adjusted through a transversal limit screw and a longitudinal limit screw at four corners of the scale body, so that the motion of the scale body in the horizontal direction is limited within a certain range and maintains vertical force bearing, and the length of the scale body is 3.6 to 4.2m and the width thereof is 3.0 to 4.0m. The utility model can measure the positional vary on the scale body of the axle weight through analyzing weigh vary measurement of all the points at four corners of the scale body, thereby improving the metering precision of multiple shaft couplers, avoiding the defect of an axle weighting instrument and achieving the precision within 1 percent FS.

Description

High precision dynamic weighing instrument

Technical field

The utility model belongs to field of measuring techniques, particularly the improvement of highway weight metering charging dynamic weighing instrument.

Background technology

At present, it is the scale body of 0.8m that highway weight metering charging axle load meter generally adopts length, and four angle transducers adopt parallel way, with the heavy variation of the whole force way measurement axis of scale body, each weight addition is drawn gross combination weight.Because the vibrations of vehicle, the variation of acceleration and people walk factors such as S shape, jumping pound for making vehicle, cause and lose axle, obliterated data, it is invalid that direct influence is weighed; Three shaft couplings of oversize vehicle are main load, and the scale body length is 0.8m, owing to the unequal reason in ground, can not carry out accurate weighing to three shaft couplings, cause the axle load meter accuracy range to be paced up and down between 2.5%FS-5%FS all the time.

The utility model content

The utility model purpose provides a kind of high precision dynamic weighing instrument, to overcome the present ubiquitous weighing accuracy of highway weight metering charging Car axle weighing balance problem on the low side.

High precision dynamic weighing instrument, it is the scale body with vehicle, four jiaos LOAD CELLS is installed at the scale body, LOAD CELLS inserts data processor respectively.

Four jiaos of scale bodies are adjusted the gaps of scale body and framework by cross spacing screw rod and longitudinal spacing screw rod, and it is vertical stressed with maintenance to make the activity in the horizontal direction of scale body be subjected to the restriction of certain limit, and scale body dimensions length is 3.6-4.2 rice, and width is a 3.0-4.0 rice.

The advantage that the utility model is compared with traditional axle load meter:

At present aspect the sensor connection, what generally adopt both at home and abroad is parallel way (indivedual employing series systems are also arranged), can not measure stressed the making respectively accurately of each sensor, what this patent adopted is that each sensor stress point is adopted the independent measurement method, can accurately measure at vehicle when each passes through, the distribution and the variation of each position power of scale body, pass through data processing, can measure data such as axle weight, the number of axle, gross weight accurately, the weighing precision of particularly multi-joint axle is significantly improved.

Because the high precision dynamic weighing instrument metering system is, by to the stressed measure of the change analysis of four jiaos of each points of scale body, can measure the heavy variation of axle with present position on the scale body, improved the measuring accuracy of multi-joint axle, avoided the defective of above-mentioned axle load meter, accuracy is reached in the 1%FS.

The utility model high precision dynamic weighing instrument has fundamentally solved the low problem of dynamic measurement accuracy, and the car load accuracy of measuring is better than 1FS%, meets the requirement of national measurement Law, makes weight metering charging management law-enforcing work fair and rational.

Description of drawings

Fig. 1 is the utility model weighing instrument structural representation (front view).

Fig. 2 is Fig. 1 vertical view.

Fig. 3 is the utility model weighing instrument transverse cross-sectional view.

Embodiment

As Figure 1-3, high precision dynamic weighing instrument, it is the scale body 1 with vehicle, 1 four jiaos LOAD CELLS 2 is installed at the scale body, LOAD CELLS 2 inserts data processor respectively.1 four jiaos of scale bodies are adjusted gaps with framework 5 by cross spacing screw rod 3 and longitudinal spacing screw rod 4, and scale body dimensions length is 3.6-4.2 rice, and width is a 3.0-4.0 rice.

Because the utility model is that LOAD CELLS is fixed on four jiaos of scale bodies, the LOAD CELLS that is positioned at four jiaos of scale bodies insert respectively data processor and by data processor to the scale body four jiaos of stressed variations of each point analyze, calculate the position of axletree on the scale body in real time, judge wheelbase, the number of axle, a heavy and gross weight accurately.Can measure the heavy variation of axle, improve the measuring accuracy of multi-joint axle, avoid the defective of above-mentioned axle load meter, accuracy is reached in the 1%FS with present position on the scale body.

LOAD CELLS, data processor related in the utility model are this area universal product, here no longer describe its concrete structure, four jiaos the load cell signal that also has data processor to pass through to be gathered is measured data computing methods such as axle weight, the number of axle, gross weight accurately and is also belonged to known technology.

Claims

1, a kind of high precision dynamic weighing instrument, the scale body (1) that it is characterized in that having vehicle is equipped with LOAD CELLS (2) for (1) four jiao at the scale body, and LOAD CELLS (2) inserts data processor respectively.

2, high precision dynamic weighing instrument according to claim 1, it is characterized in that (1) four jiao of gap of scale body by cross spacing screw rod (3) and longitudinal spacing screw rod (4) adjustment and framework (5), and scale body dimensions length is a 3.6-4.2 rice, and width is a 3.0-4.0 rice.