Belt condition monitoring system, part of component design
Conveyor during operation often fails, affecting delivery system stable and reliable operation. In order to find as soon as possible and remove belt failure, you want to belt conveyor line monitoring of running status. In the traditional monitoring system, monitoring software is usually caused by
VB, VC + + written in other languages, which requires not only engineering and technical personnel have a high level of programming, but also to put a lot of development time, enabling the development efficiency and maintainability of the system is restricted; addition, the system interface is simple and achieve fewer features, is far from full
Foot modern automated monitoring systems. Plastic belt conveyor
The system is capable of running real-time monitoring of belt conveyor. Real-time display the current running conveyor speed, temperature, throughput and material accumulated weight, etc.; also be able to over-speed conveyor belt, less speed, skidding, deviation over temperature and other abnormal conditions and make real-time processing. The Department
The hardware system consists ics-30 series belt weigher, JCPP-I-type deviation switches, temperature sensors and signal conditioning circuits, PCL-818L data acquisition card and PC machines. In this system, each of the signal detecting means to collect data acquisition card PCL-818L in the data acquisition
Set Card PCL-818L with power control for each channel corresponding variables linked database, unified management by the power control is given parts of the system operating parameters, operating trends, reports, and alarm events. When there is abnormal phenomenon occurs, the system can be run under the belt conveyor rubber belt conveyor
Requirements, make the appropriate action, automatically cut off the motor control circuit so that the conveyor is stopped.
1.ics-30 series belt weigher
ics-30 series by a belt scale weighing bridge (including load cell), gun system (including speed sensor) and the totalizer three major components. The basic working principle is:
(A) supporting the bridge load cell and said idler detect the weight of material on the belt, belt load produces a proportional electrical output signal;
(2) speed sensor directly connected to the end of the large diameter roller or drum speed, generates a series of pulse signals, each representing a length of the belt speed, the length of the pulse is proportional to the belt speed, when the belt slip or break, the tail drum speed occurs speeding or under speed now
Like, the tail pulley by monitoring changes in speed can be timely and accurate understanding of the belt is slipping or broken, when the tail pulley rotation speed exceeds or falls below a preset value, the device can automatically shut down or alert, so can effectively prevent various accidents
(3_ Totalizer belt speed and belt load will either signal totalizer with integral method, and converted into engineering units selected, the display shows the current throughput, respectively, and the total throughput.
2.JCPP-I-type deviation switch
Deviation switch by detecting the conveyor belt during operation to offset state signaled automatically to achieve conveyor deviation alarm and automatic shutdown feature to prevent tilting conveyor offset the material spilled. The lateral displacement of the conveyor belt deviation will produce vertical roller deflection
By the vertical roller deflection angle to determine the switching output signal a few levels. When the conveyor slight deviation angle of deflection of the vertical roll ≥ 12 degrees, the switch output an alarm signal; serious deviation when the conveyor belt so that the vertical roll deflection angle ≥ 30 degrees, the switch output two stop signal. Deviation open
Off the drive roller pairs mounted between the rollers and the end of three positions, the general length of the belt mounting three pairs of 100m appropriate.
3.PCL-818L data acquisition card
PCL-818L data acquisition card is a high-performance multi-function data acquisition card, it is PC-based ASI bus structure. The board provides 16 single-ended or 8 differential analog inputs, 16 digital inputs and outputs, 12 should be A / D converter can be achieved 100kHz sampling rate. 16 die
Intended input voltage range: Bipolar ± 0.625V-± 10V; unipolar 0V-10V. Programmable gain for each input channel, 16-channel digital input and output with TTL level compatible. In this system, the use of PCL-818L data acquisition card, four analog inputs, respectively achieved
Current speed on the conveyor belt, the current temperature, the current throughput and material accumulated weight, etc. 4 analog signal acquisition; utilize six digital input points respectively, to achieve a switch on the deviation signal and two alarm alarm signal acquisition ; with a digital output point to control belt transmission
Sending machine drive motor control circuit relays.