CN2379791Y

CN2379791Y - Shallow pit, short plat form and electronic truck scale

Info

Publication number: CN2379791Y
Application number: CN 99213624
Authority: CN
Inventors: 金辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-06-07
Filing date: 1999-06-07
Publication date: 2000-05-24
Anticipated expiration: 2009-06-07

Abstract

The utility model relates to a shallow pit, short plat form and electronic truck scale, which is composed of a load carrier, four high-precision suspending arm type weighing sensors, a terminal box, a set of limiting devices and a display instrument controlled by a single-chip computer, wherein, the sensors are connected with the terminal box and then connected with the display instrument controlled by the single-chip computer. The load carrier having a table surface which is on the same level as the ground can be used for metering and weighing a single shaft and dual shafts of a large-scale freight car at one time. A longitudinal limiter is arranged on the load carrier, and the sensors are arranged on the table surface of the load carrier. In short, the utility model changes the disadvantages that former measurement with the single shaft has poor accuracy and slow measuring speed. The truck scale having the advantages of small ground occupation, simple installation, favorable use and maintainability, metering with dual shafts, etc. can be used for weighing and metering in all walks in life such as coal mines, urban construction, road traffic, etc.

Description

Shallow foundation hole---short platform-type electronic vehicle weighing apparatus

The utility model is to measure truck weight about a kind of being applicable to, has the weighing-appliance of high precision semi-girder resistance strain weighing transducer (hereinafter to be referred as sensor) and high intelligent weighing Displaying Meter.

Along with the continuous development of socialist market economy, transport undertaking constantly enlarges, and presses in the society that a kind of occupation of land is little, cost is low, metering speed is fast, accuracy is high, working service weighing apparatus product easily.

A present landship that uses, as steyr, Mitsubishi, too dilatory, liberation, red rock, bulk cement carrier etc., it is big all to have a dead weight capacity, and trailing wheel adopts the design feature of two-wheel group.If also adopt conventional single shaft metering system or the certain inclination of vehicle body generation in the weighing process, this all can cause the inaccurate of continuous data.

The purpose of this utility model just provide a kind of satisfy that above-mentioned operation technique requires can be static and the weighing apparatus product of dynamic measurement.

The purpose of this utility model is achieved in that electronic vehicle weighing apparatus adopts short table top shallow foundation hole formula to place, and carrier table top and road surface be on same plane, vehicle by the time all wheels remain on same surface level always.Four sensors are installed on four angles of carrier, rod-pulling type length travel stop are housed in the vertical both sides of carrier, weighting display instrument, terminal box also has parts compositions such as carrier framework.

The utility model is considered as rigid body (comprising that center of gravity changes minimum full dress tank truck) with automobile, when can being reduced to system of parallel forces during on same plane, carrier and road surface ask problem with joint efforts, when adopting Fig. 1, can adopt the statics system of parallel forces to ask the principle of making a concerted effort during the metering system of Fig. 2, with the automobile front axle gravimetric value that measures respectively, can try to achieve the overall weight of automobile after the two addition of automobile hind axle gravimetric value.After automobile left the carrier table top with the even speed per hour that is not more than 5km/h, weighting display instrument can add up automatically to the single-wheel and the back wheels of measured automobile, thereby obtained the gross weight of measured automobile.The principle that adopts for the automobile with front axle, axis, rear axle is the same.

After load (tested automobile single shaft or twin shaft) is added on the carrier, pass to four sensors on the supporting point, make sensor elastomer generation microdeformation, the anti-out of trim of internal bridge roadlock, then make the sensor output terminal produce faint voltage signal, this signal is amplified by amplifier, after filtering, carry out digital conversion by (A/D) converter again, the CPU that digital signal is delivered to microprocessor handles, control various computings by the software of weighting display instrument, the result is delivered to memory, CPU sends instruction when needing, and delivers to weighting display instrument from internal memory, can demonstrate single shaft weight, the complete vehicle weight of twin shaft weight and automobile has so just been finished the car load weighing process No. one time.

Carrier table top of the present utility model and road surface are on same plane, and all wheels of vehicle remained on same plane together when automobile was measured, and can make load keep table top perpendicular to carrier so always, are significant design to improving measuring accuracy.

The setting of rod-pulling type length travel stop can be eliminated the length travel of carrier, eliminates and rocks longitudinally, keep measuring accuracy, but pull bar does not hinder the displacement on other directions, and this is the another important measures of the utility model.

The utility model is placed in sensor on the carrier table top, can avoid into water immersion like this, and the generation of silt pollution and some other electrical equipment accident is installed to equipment again simultaneously, and daily working service brings great convenience.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 measures front axle weight synoptic diagram for the utility model

Wherein: 1, automobile; 2, shallow foundation hole---short platform-type electronic vehicle weighing apparatus; 3, vehicle front;

Fig. 2 measures back wheels axle weight synoptic diagram for the utility model

Wherein: 4, back wheels

Fig. 3 is the utility model embodiment truck scale vertical view

Wherein: 5, basic framework, it is the framed structure that is welded by steel; 6, carrier, its table top and road surface contact with doughnut during check weighing on same plane; 7, the unloading bolt; 8, cover, it covers on sensor, rod-pulling type stop, terminal box, cable etc. wherein, so that protection; 9, terminal box; 10, rod-pulling type length travel stop; 13, the transversal displacement stop.

Fig. 4 is the utility model embodiment side sectional view, the assembling situation of wherein putting on the visible light transducer, length travel stop 10, the installation situation of terminal box 9

Wherein 11, the beam type LOAD CELLS, each sensor connects with spandrel girder on the carrier with two bolts, and the sensor cantilever end contacts with web member on being bearing in framework, at last load is passed on the basic framework, passes on the cement ground 12 again.

12, the cement ground should be reserved drainageway shown in the figure when building, in order to avoid soak truck scale.

In sum, it is low to the utlity model has cost, installs simple, quick metering, accurate measurement, plurality of advantages such as easy to use, can carry out Weighing to various load-carrying vehicles, will be applicable to departments such as industrial enterprise, coal yard, stock ground, metallurgy, urban construction, highway construction, storage.

Claims

1, a kind of shallow foundation hole---short platform-type electronic vehicle weighing apparatus, by a carrier, four high precision beam type LOAD CELLS, a terminal box, one cover stop means, a monolithic processor controlled weighting display instrument is formed, it is characterized in that: on four angles of carrier (6), be connected with beam type LOAD CELLS (11), beam type LOAD CELLS (11) contacts with web member on being bearing in basic framework (5), terminal box (9), rod-pulling type length travel stop (10) is contained on the carrier (6), and with on cover (8) cover, the lead of sensor (11) is connected with terminal box (9), and the lead of terminal box (9) is connected with monolithic processor controlled weighting display instrument.

2, according to the described truck scale of claim 1, it is characterized in that: carrier (6) links with rod-pulling type length travel stop one end, and the rod-pulling type length travel stop other end is fixed on the basic framework (5), eliminates length travel.

3, according to the described truck scale of claim 1, it is characterized in that: beam type LOAD CELLS (11) is installed on carrier (6) table top, bassets, and improves working service.