CN2217608Y - Dynamic electronic suspension-balance - Google Patents

Abstract

The utility model relates to a dynamic electronic suspension-balance, which is composed of a balance body, an instrument part and a printer, wherein, the signals of the balance body are conveyed to the display instrument part by the balance body and the instrument through shielded cables; the instrument part is connected with the printer via an interface board with eight buffers/line drivers and a clock generator, and is free from the restriction of the swinging angle of a weighed object. The dynamic electronic suspension-balance can measure precision 0.2-1% F. S.) and finish weighing within 10-20 seconds in the process of lifting or pulling diagonally. The utility model is especially suitable for the quick weighing during the process of the production of mines, docks and goods fields.

Description

Dynamic Electronic Crane Scale

The utility model relates to a kind of Dynamic Electronic Crane Scale, and it can be applicable to crane in bridge type, monorail hoisting crane and fixed crane etc. and realize automatic gauge when handling materials such as grab bucket, case, magnetic chuck or clamp.

For the metering of large numbers of items, the generally amount of continuing to use side, instrumentation ship waterline or with the truck scale metering, the above two metering errors are big, are difficult to prevent cheating again; The latter takes a lot of work, time-consuming, appropriate litigation fees is big.Chinese patent 89212197.1 has proposed the dynamic grab bucket electronic scales, but it has stipulated that steelyard allows pendulum angle to be ± 3.5 ° (along vertical line), and its precision is 0.5～1%, because the angle too small of its regulation can not satisfy production requirement.

The purpose of this utility model just is to provide a kind of not regulation pendulum angle, at lifting process with tiltedly be pulled through the Dynamic Electronic Crane Scale of automatic gauge in the journey.

The utility model structure comprises scale body, display instrument partial sum chopping machine.

For tower crane, its scale body comprises housing, cover plate, goes up lower lift ring and S type pulling force sensor.For crane in bridge type, the scale body is installed and is divided day care and board at the nursery mode, and day care is to utilize two pressure type sensors to hold up meter 1/2 weight in dolly, and boarding at the nursery is to utilize four pressure type sensors that dolly is all held up, the meter total weight.Oil-resistant rubber insert is adopted in the connection place of sensor and car frame, and not only available buffer but also can locate when weighing platform is hit displacement, can automatically reset.

Instrument partly comprises the interface board of high gain, high-precision amplifying, D/A, photoelectrical coupler, chip microprocessor, rewritable memory, display driver, six telltales of LED, 4 control keys, band clock etc.Sensor is connected with display instrument by shielded cable.

The high precision of the utility model display instrument, high gain amplifier IC ₁Through D/A IC ₂, the photoelectricity rake closes device IC ₃And chip microprocessor IC ₄Signal is connected, programmable keyboard/display interface IC ₅By two-way control line and IC ₄Control mouthful connects, and respectively with hex buffer/line drive IC ₆, eight energy dispersers/line drive IC ₇With rewritable memory IC ₈The control mouth connect; IC ₈Data port by bidirectional lines through eight energy dispersers/line drive IC ₈With IC ₄Control mouthful connects, its delivery port by bidirectional lines through eight energy dispersers/line drive IC ₁₁, hex buffer/line drive IC ₁₀Be connected with display led; Eight energy dispersers/line drive IC ₇Delivery port passes through two-way control line through IC ₆Be connected with LED.

Control key of the present utility model can be by source switch ON/OFF, peeling key TARE, and zeroing key ZERO and gross weight/net weight key GROSS/NET forms, and enters chip microprocessor IC by NAND gate respectively ₄Realize control.

Weighting apparatus of the present utility model has been equipped with chopping machine TP, and by band clock generator, eight energy dispersers/line drive IC ₁₂Be connected to chip microprocessor IC ₄, the numerical value of weighing is promptly printed automatically.

During use, sensing device is installed in fixed end on the gig steel cable, after S type sensor is subjected to the weight pulling force, produces microvolt signal and by cable input display instrument.Through high gain, high-precision amplifying IC ₁After the amplification, again through D/A IC ₂Be transformed into digital signal, this signal is through photoelectrical coupler IC ₈Carry out entering chip microprocessor IC after the photoelectricity coupling ₄Carry out data handing, transport to telltale again and show.As soon as demonstration is stable, promptly print these data.Change rewritable memory IC for production requirement controllable function and setting valve ₈Program finish.

The utility model is described in further detail below in conjunction with drawings and Examples.

The drawing explanation of accompanying drawing:

Fig. 1 is the utility model Dynamic Electronic Crane Scale functional block diagram;

Fig. 2 is the utility model scale body cutaway view;

Fig. 3 is the utility model telltale schematic circuit.

Among Fig. 2, the utility model scale body is made up of housing (3), cover plate (5), upper lift ring (1), lower lift ring (6) and S type strain tension sensor (4), sensor is contained in the housing and by screw (2) and connects with upper and lower suspension ring respectively, upper lift ring is screwed the upper end at housing, the housing lower end connects with cover plate by screw thread, and lower lift ring more very much not contacts with cover plate because of the gap when being subjected to pulling force.

Among Fig. 1, Fig. 3, the utility model display instrument is by high gain, high-precision amplifying IC ₁, D/A IC ₂, photoelectrical coupler IC ₃, chip microprocessor IC ₄, programmable keyboard/display interface device IC ₅, hex buffer/line drive IC ₆And IC ₁₀, eight energy dispersers/line drive IC ₇, IC ₉, IC ₁₁And IC ₁₂, rewritable memory IC ₈And display led, chopping machine TP and control key are formed.IC ₁Through IC ₂, IC ₈With IC ₄Signal input connects; IC ₅By two-way control line and IC ₄Control mouthful connects, and respectively with IC ₆, IC ₇And IC ₈The control mouth connect; IC _aData port by bidirectional lines through IC ₉With IC ₄Control mouthful connection; Its delivery port by bidirectional lines through IC ₁₁, IC ₁₀Be connected with LED; IC ₈Data port by bidirectional lines through IC ₁₁, IC ₁₀Be connected IC with LED ₇Delivery port passes through two-way control line through IC ₆Be connected with LED.(GROSS/NET forms control key, and enters IC by NAND gate respectively by source switch ON/OFF, peeling key TARE, zeroing key ZERO and gross weight/net weight key ₄Carry out control.TP passes through IC ₁₂Be connected to IC ₄

The scale body 1S of the utility model weighting apparatus and display instrument neutral line amplifier IC ₁Between connect by shielded cable, constant voltage power suspply 2WY and 1WY are respectively to sensing device and display instrument power supply.When 1S is subjected to gravity pull, produce microvolt signal through cable by input end SGIN ⁺And SGIN ^-Enter display instrument, again through linear amplifier IC ₁Amplify, again through D/A IC ₂Be transformed into digital signal.IC ₂In also go here and there active filter, it can have very strong inhibition ability to the industrial interference more than f 〉=2Hz, for overcoming the reading shakiness that vibration and swing are caused in the motion positive effect is arranged.This signal is again through photoelectrical coupler IC ₃Carry out the photoelectricity coupling, can further improve antijamming capability, enter chip microprocessor IC then ₄Carry out data handing.Data after the processing are through eight energy dispersers/line drive IC ₉Insert rewritable memory IC ₈, it can realize data acquisition, filtering, computing, demonstration and printing control, and zero setting arranged, remove the peel, add up, automatic tracking, time control and kind selection function.

According to the quality and the installation quality of weight-lifting equipment itself, its dynamic measurement precision is in 0.2～1% (F.S.) scope.Whole hoisting measurement process was finished with interior at 10～20 seconds, and can automatically lock, show numeral and printing.In addition, also have the function of each handling time of automatic monitoring, sequence number, net weight and net weight accumulative total, simple in structure, easy to operate.Particularly the do not weighed restriction of thing pendulum angle, it can measure in the dynamic process that promotes or tiltedly draw.

Claims (2)

1. a Dynamic Electronic Crane Scale comprises scale body, instrument partial sum chopping machine, it is characterized in that being applied to tower crane, and its scale body is made up of housing (3), cover plate (5), upper and lower suspension ring (1), (6) and S type pulling force sensor; Be applied to crane in bridge type and adopt the day care or the formula pressure type sensor mounting means of boarding at the nursery, oil-resistant rubber insert is adopted in the connection place of sensor and trolley frame;

Instrument partly comprises high precision, high gain amplifier IC ₁, A/D converter IC ₂, photoelectrical coupler IC _a, chip microprocessor IC ₄, rewritable memory IC ₈, eight energy dispersers/line drive IC ₇, IC ₉, IC ₁₁, hex buffer/line drive IC ₆, IC ₁₀, programmable keyboard/display interface IC ₅, display led and control key; Sensor signal is through IC ₁, IC ₂, IC ₃With IC ₄Connect; IC ₅By bidirectional lines and IC ₄Be connected, and respectively with IC ₆, IC ₇And IC ₈Be connected; IC ₈By bidirectional lines through IC ₉With IC ₄Be connected, it is exported through bidirectional lines and IC ₁₁, IC ₁₀Be connected with LED.

2. want 1 described Dynamic Electronic Crane Scale according to right, it is characterized in that the display instrument part is through eight energy dispersers/line drive IC ₁₂And the interface board of band clock generator is connected with chopping machine TP.

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