CN201555845U - Concrete slump curve display device - Google Patents

Abstract

The utility model discloses a concrete slump curve display device, which relates to slump curve display equipment and comprise a programmable controller, a power sensor connected with the programmable controller and used for collecting the real power signal of a stirrer, a drive circuit connected with the programmable controller and used for controlling the rotation of the stirrer, a keyboard connected with the programmable controller and used for inputting the specification model of the concrete to be stirred to the programmable controller, a display module connected with the programmable controller and used for displaying the slump curve of the concrete in real time, and a printer connected with the programmable controller and used for outputting and printing the slump curve of the concrete. The display device has the benefits of wide application range and real-time on-line observation of the concrete slump curve.

Description

The concrete slump graph display devices

Technical field

The utility model relates to slump curve display equipment, specifically is a kind of concrete slump graph display devices.

Background technology

The slump is important techniques index very in the concrete production process, how to show when producing that the slump is the emphasis that the concrete production industry is paid close attention to always, also is the key subjects of producing the research of concrete equipment producer.The most original artificial on-the-spot test method is still used in the detection of the slump at present, and also is to carry out with artificial visually examine's method in the process of producing, and also just estimates the concrete slump by the stirring machine reometer of correspondence at most.The mixing plant of some imports, being known as has slump display, understands on the spot, the operator says so and is just for show, and is exactly the numerical value reometer, recomputates through computing machine, show curve on screen, for operator's reference, operator's reflection is not as good as seeing that reometer is convenient.

Summary of the invention

At the deficiencies in the prior art, the utility model provides a kind of concrete slump graph display devices, can show the concrete slump curve by real-time online.

The utility model realizes that with following technical scheme a kind of concrete slump graph display devices comprises:

---programmable controller;

The power sensor of---be connected with programmable controller is used to gather the active power signal of stirring machine;

The driving circuit of---be connected with programmable controller is used to control the rotation of stirring machine;

The keyboard of---be connected with programmable controller, the current specifications and models of wanting ready-mixed concrete of input in programmable controller;

The display module of---be connected with programmable controller is used for showing in real time the concrete slump curve;

The printer of---be connected with programmable controller is used for output print concrete slump curve.

Principle of work is: power sensor is delivered to the stirring machine active power signal that collects in the programmable controller, import amount relevant every technical parameter in all size concrete stirring side in the programmable controller in advance, programmable controller in automatic control process according to the variation of active power, calculate response time and active power curve rapidly, and on display module, show in real time, the concrete slump curve printing can be come out by printer, if the concrete slump curve occurs unusual, programmable controller shuts down by stirring machine by driving circuit.

The beneficial effects of the utility model are: usable range is wide, can observe the concrete slump curve by real-time online.

Description of drawings

Accompanying drawing is the utility model electricity theory diagram.

Embodiment

As shown in drawings, a kind of concrete slump graph display devices, comprise programmable controller, be connected the power sensor that is used to gather stirring machine active power signal with programmable controller, be connected the driving circuit that is used to control the stirring machine rotation with programmable controller, be connected the current keyboard of wanting the ready-mixed concrete specifications and models of input in programmable controller with programmable controller, be connected the display module that is used for showing in real time the concrete slump curve with programmable controller, be connected the printer that is used for output print concrete slump curve with programmable controller.

Electric power generally is divided into three kinds of applied power, active power, reactive power.Wherein active power claims average power again.The instantaneous power of alternating current is not a steady state value, the mean value of power in one-period is called active power, it is meant the power that the resistance section branch consumes in circuit, for motor, be meant exerting oneself of motor, unit is kilowatt (KW), just can play a part of power of acting in alternating circuit.In alternating circuit, active power is relevant with power factor, and power factor is the ratio of active power and applied power.This shows that active power is to reflect actual the mix and stir situation of concrete in stirring machine.

In the present embodiment, power sensor is installed in the mixer motor output terminal, be used to gather the active power signal of stirring machine, import amount relevant every technical parameter in all size concrete stirring side in the programmable controller in advance, display module adopts liquid crystal display.Stirring machine is when work, the inverse function of the corresponding concrete slump actual curve of the active power change curve of motor is more approaching, discover that further not only curve that active power changes can reflect the actual conditions of concrete slump, can also reflect the degree of uniformity that situation that various admixtures successively feed intake and concrete mix and stir in stirring machine.Curve by the active power variation, can reflect in real time that concrete is from being dosed into the situation that is stirred to the discharging overall process, for various materials sequencing and mixing time length absolutely clear that track also all describes that influence that feed intake to concrete quality, and the shape of curve, no matter be to stir or stir, roughly be the same less than specified side's amount by the specified side of mixing whenever amount.Infer thus, just can judge the size of the quality of concrete situation and the slump according to the shape of active power curve, if the undesired expression production of curve is just undesired, will influence concrete quality, this moment, programmable controller will shut down by stirring machine by driving circuit.

Claims (2)

1. concrete slump graph display devices is characterized in that: comprising:

---programmable controller;

The power sensor of---be connected with programmable controller is used to gather the active power signal of stirring machine;

The driving circuit of---be connected with programmable controller is used to control the rotation of stirring machine;

The keyboard of---be connected with programmable controller, the current specifications and models of wanting ready-mixed concrete of input in programmable controller;

The display module of---be connected with programmable controller is used for showing in real time the concrete slump curve;

The printer of---be connected with programmable controller is used for output print concrete slump curve.

2. concrete slump graph display devices according to claim 1 is characterized in that: described display module adopts liquid crystal display.

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