CN2323364Y

CN2323364Y - Electronic scale with checking device

Info

Publication number: CN2323364Y
Application number: CN 97229370
Authority: CN
Inventors: 王绍光; 潘瑞斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-15
Filing date: 1997-10-15
Publication date: 1999-06-09
Anticipated expiration: 2007-10-15

Abstract

The utility model relates to an electronic scale with a checking device. The utility model belongs to the electronic weighing instrument, particularly a large electronic scale with a checking device. The utility model is characterized in that weighing sensors are provided with corresponding high-accuracy sensors which are connected with a secondary meter; connectors are connected between the weighing sensors and the high-accuracy sensors; the secondary meter which is connected with the high-accuracy sensors is checked by the measurement standard as the working standard. Then, the electronic scale is checked according to the standardized magnitude from the detection value of the working standard. The utility model has the advantages that usual weighing can be carried out, and the self weight can be checked; the structure design is artful and reliable; the fabrication is easy; the checking method is scientific and reasonable; the utility model is particularly suitable for using in an occasion which is limited by time and space.

Description

The electronic scales of band calibrating installation

The utility model belongs to electronic scale, particularly with the large electronic scale of calibrating installation.

In order to guarantee that electronic scales reaches the requirement that expection is used, need electronic scales is calibrated.But the calibration steps to electronic scales is employing " directly adding the counterweight method " at present, and this calibration method need be placed into counterweight on the electronic scales one by one, use in a large number and manually come the handling counterweight with the loading and unloading Transport Machinery, and is not only time-consuming but also require great effort.For be positioned at the high-altitude, transport channel is limited and the electronic scales that uses under the specific condition such as free requirement to equipment operation, often is difficult to adopt this method that electronic scales is calibrated.

The purpose of this utility model provides a kind of electronic scales with calibrating installation, and it can not only carry out common weighing, and can also calibrate electronic scales quickly and easily.

The utility model is achieved in that on the existing electronic scales basis that mainly is made of scale body and the LOAD CELLS of bearing weight on the scale body, the all corresponding high-precision sensor that connects with secondary instrument that is provided with of each LOAD CELLS, be connected with connector between LOAD CELLS and the high-precision sensor, secondary instrument connect with high-precision sensor and through the calibration of measurement standard as working stamndard, detected value with this working stamndard is demarcated electronic scales as the standard value, realizes the calibration to electronic scales.

Below, the synoptic diagram according to two kinds of structures of the present utility model is further described it.

Fig. 1 adopts the structural representation of pull-type sensor for the utility model;

Fig. 2 is the synoptic diagram of the connector of pull-type sensor;

Fig. 3 adopts the structural representation of pressure type sensor for the utility model;

Fig. 4 is the synoptic diagram of the connector of pressure type sensor.

Referring to accompanying drawing, each label is represented successively among the figure: nut 1, bearing 2, upper connecting rod 3, high-precision sensor 4, connector 5, LOAD CELLS 6, lower link 7, scale body 8, bearing beam 9, nut 10, scale body 11, pressure head 12, high-precision sensor 13, connector 14, LOAD CELLS 15, bearing 16, mounting hole 17, concave spherical surface 18, mounting hole 19, O type cushion rubber 20.

When adopting pull-type sensor, its concrete structure is, has upper connecting rod 3 to be connected with lower link 7, and an end of lower link 7 connects electronic scales bearing beam 9, and the other end then connects LOAD CELLS 6.Each LOAD CELLS 6 of bearing weight on the scale body is to connect by the threaded connector 5 in two with corresponding 4 of high-precision sensors, and upper connecting rod 3 connects high-precision sensor 4 and bearings 2.

When adopting the pressure type sensor, its concrete structure is, the scale body connects the pressure head 12 of an end band concave spherical surface for 11 times, the protruding sphere of high-precision sensor 13 places pressure head 12 concave spherical surfaces, the mounting hole 17 at connector 14 two ends, be respectively charged into an end of high-precision sensor 13 and LOAD CELLS 15 in 19, the mounting hole 19 of LOAD CELLS 15 1 ends of packing into of connector 14 is 1/4～3/4 of LOAD CELLS 15 height deeply, hole wall is thick to be 5～30mm, gap between hole wall and the LOAD CELLS is 0.5～2mm, and the hole inwall is equipped with O type cushion rubber 20, hole bottom has the concave spherical surface 18 that the protruding sphere with LOAD CELLS 15 matches, and LOAD CELLS 15 places on the bearing 16 that is connecting ground.This structure can guarantee mutual alignment suitable between above-mentioned parts, and its center line is on the same pedal line.

High-precision sensor and secondary instrument connect and constitute detection system (because of both connect by tradition, so the secondary instrument that do not draw), after measurement standard is calibrated as working stamndard.When electronic scales is calibrated, to be placed on the scale body by weighed object, when being in balance, high-precision sensor is identical with the weight that LOAD CELLS is born, after this is detected by working stamndard by the weight of weighed object, demarcate electronic scales as the standard value, thereby realize the calibration to electronic scales, its value unit is mass unit kg or t.The high-precision sensor precision preferably chooses 0.01%～0.05%.After calibration finishes, unload high-precision sensor, reconnect physical dimension and the weight parts identical with it after, electronic scales can normally use.

From technique scheme of the present utility model as seen, the electronic scales of this band calibrating installation both can carry out common weighing, can calibrate electronic scales itself again, its structure dexterity, reliable, manufacturing easily, calibration steps science, reasonable, easy to operate, quick can change the sort of heavy operation of wasting time and energy of " method of directly raising the price ", and can reduce use cost, be particularly suitable under the occasion that is subjected to the space-time condition restriction, using.

Claims

1, a kind of electronic scales with calibrating installation, mainly constitute by scale body and the LOAD CELLS of bearing weight on the scale body, it is characterized in that each LOAD CELLS is all corresponding is provided with the high-precision sensor that connects with secondary instrument, is connected with connector between LOAD CELLS and the high-precision sensor.

2, press the electronic scales of the described band calibrating installation of claim 1, it is characterized in that when adopting pull-type sensor, there is upper connecting rod to be connected with lower link, lower link one end connects the electronic scales bearing beam, the other end connects LOAD CELLS, be connected the threaded connector in two between LOAD CELLS and high-precision sensor, upper connecting rod connects high-precision sensor and bearing.

3, electronic scales by the described band calibrating installation of claim 1, it is characterized in that when adopting the pressure type sensor, the scale body connects the pressure head of an end band concave spherical surface down, the protruding sphere of high-precision sensor places the pressure head concave spherical surface, be respectively charged into an end of high-precision sensor and LOAD CELLS in the mounting hole at connector two ends, the installation hole depth that connector connects the LOAD CELLS end is 1/4～3/4 of a LOAD CELLS height, hole wall is thick to be 5～30mm, gap between hole wall and the LOAD CELLS is 0.5～2mm, and the hole inwall is equipped with O type cushion rubber, hole bottom has the concave spherical surface that the protruding sphere with LOAD CELLS matches, and LOAD CELLS places on the bearing that is connecting ground.