CN2118586U - Control arrangement for crusher - Google Patents

Abstract

The utility model discloses a monitor used for monitoring the vibration and the temperature of the bearing of a crusher and the vibration of the crusher. The monitor mainly comprises a detection circuit for bearing vibration, a detection circuit for bearing temperature, a detection circuit for body vibration, an analogue-digital conversion circuit, a data prewired circuit, a single chip computer, a digital display circuit, and a warning shutdown circuit. The single chip computer is used as the element of the monitor for collecting data, testing data and controlling data. When a detection signal is equal to a number value which is set and is read into the single chip computer through the data prewired circuit, the monitor can emit instructions for giving an alarm and stopping the crusher. The utility model has the advantages of simple structure, small volume and convenient maintenance. The centralized control from a distant range is easily carried out. The operating conditions for persons who test the crusher are improved.

Description

Control arrangement for crusher

The utility model belongs to a kind of monitor that is used to monitor mechanical equipment working state, exactly is a kind of monitor of monitoring the vibration of disintegrating machine bearing, temperature conditions and body vibration situation.

Disintegrating machine is the main equipment that enterprises such as thermal power plant, mine use, and its rotor quality is very big, rotational line speed height, under the disequilibrium situation, vibrate very violent, if can not get timely processing, serious equipment breakdown be certainly will cause, even factory building and personal safety jeopardized.Because the broken coal cinder of coal breaker mainly is to utilize the hammer circulating application of rotor axle to add hammer force to realize, the main body that is coal breaker is a rotor part that the hammer ring is housed, and this rotor part is installed on the bearings at both ends, this shows, the vibration of rotor must be directly delivered on the bearings at both ends, be delivered on coal breaker body and the basis by bearing block again then, like this, the vibration of vibration, temperature and the body of monitoring bearings at both ends just can be understood the duty of coal breaker, and guarantees the safe operation of this coal breaker with this.A kind of monitoring panel of monitoring the coal breaker duty is abroad arranged at present, this disk body is long-pending big, complex structure, form by relay, unit instrument etc. fully, utilize the acceleration transducer of electric charge output and thermocouple sensor as the vibration measuring temperature element, output signal extremely a little less than, be difficult for teletransmission, can only be installed in the disintegrating machine scene to this monitoring panel, can not be used for centralized control system.Because condition is more abominable in general in the working site of disintegrating machine, noise, dust are all very big, certainly will will influence the healthy of tour personnel like this.

In view of the foregoing, it is little, simple in structure that the purpose of this utility model provides a kind of volume, is convenient to the disintegrating machine safety monitor in the indoor installation of centralized Control.

The purpose of this utility model is achieved in that it comprises that single-chip microcomputer and the data that link to each other with single-chip microcomputer give circuits, digital display circuit, warning halt circuit, analog to digital conversion circuit (A/D) and the bear vibration testing circuit that links to each other with this analog to digital conversion circuit input, bearing temperature testing circuit, body vibration detection circuit.Each testing circuit detects disintegrating machine bearing vibration signal, bearing temperature signal and body vibration signal and becomes data signal by analog to digital conversion circuit and send in the single-chip microcomputer; and shown by digital display circuit; when the data detection signal in sending into single-chip microcomputer meets or exceeds and is given vibration alarming value, vibration that circuits sets and transfinited shutdown value or temperature alarming value, temperature over-range shutdown value by data; single-chip microcomputer sends command signal; make the warning halt circuit send alarm sound and stopping signal, guarantee the safe operation of disintegrating machine with this.

For the ease of fault diagnosis, analysis, also can connect a printer at the output of single-chip microcomputer, go out 10 data by this printer prints when prepass.

The utility model has the advantages that: (1) utilize single-chip microcomputer as the data acquisition of whole monitor, follow inspection and control element, got rid of numerous unit instruments, therefore simple in structure, volume is little, cost is low, and performance is good, function is complete, and is easy to maintenance; (2) vibration detection circuit and sensing element in the temperature sensing circuit temperature detecting resistance that adopts the acceleration transducer of built-in charge amplifier to be connected respectively with three-wire system, therefore output signal strength is big, improved signal to noise ratio greatly, be suitable for teletransmission, be convenient to this monitor is installed in centralized control room, realize remote monitor, the simultaneously corresponding condition of work of improving the monitoring personnel.

Detail of the present utility model is by following examples and attached providing thereof:

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2-the 4th, the utility model circuit theory diagrams.

Fig. 5 is a sensing element installation site schematic diagram.

Fig. 6 is the instrument box schematic diagram

With reference to the accompanying drawings, the utility model comprises a left side, right bearing vibration detection circuit 1,2, a left side, right bearing temperature sensing circuit 3,4, body vibration detection circuit 5, modulus (A/D) change-over circuit 6, data are given circuits 7, single-chip microcomputer 8, function key circuit 9, warning halt circuit 10, digital display circuit 11, printer 12, wherein left, right bearing vibration detection circuit 1,2 and body vibration detection circuit 5 circuit structures and principle identical (as shown in Figure 2), it adopts the acceleration transducer ZG of built-in charge amplifier as the vibrating sensing element, place a disintegrating machine left side respectively, right bearing 13,20 and disintegrating machine body 16 on, the voltage signal of its output is proportional to vibration acceleration, the voltage signal of this output is via resistance R 35, R36 and capacitor C 7, the low pass filter of the signalling channel that C8 forms is delivered to the A741 by operational amplifier A 1(μ), resistance R 37-R39 and capacitor C 9, the multiple integral circuit that C10 forms, make it to convert the acceleration voltage signal of input to the displacement voltage signal, this displacement voltage signal is via operational amplifier A 2(μ A741), resistance R 40-R42, the ac amplifier circuit that W1 and capacitor C 11 are formed reaches by resistance R 43, R44 and power supply VREF(+) signal conditioning circuit of forming delivers to input (26 of the IC22 of analog to digital conversion circuit 6,27,28 pins); A left side, right bearing temperature sensing circuit 3, these two temperature sensing circuit structures of 4(, principle is also identical, as shown in Figure 3), comprise the temperature detecting resistance R1 that adopts three-wire system to connect, balanced line resistance R X with by resistance R 45-R47, W4, the temperature measuring circuit that the Hui Sidun circuit that W5 forms constitutes be connected this measuring circuit output by operational amplifier A 3(μ A741), the direct current signal amplifying circuit that resistance R 48-R51 forms, the temperature detecting resistance R1 that connects with three-wire system is a thermometric sensing element 14,19, place a left side respectively, on the right bearing 13 and 20, temperature sensing circuit 3 and 4 output (1 of the IC22 that links to each other with the input of analog to digital conversion circuit 6,2 pins); Analog to digital conversion circuit 6 is by A-D converter IC22(ADCO890) form, will convert data signal to from the voltage signal of three tunnel (left and right side bearing and body) vibration detection circuit and two tunnel (left and right side bearing) temperature sensing circuit output and send in the single-chip microcomputer 8; Data are given circuits 7 by ten toggle switch BK1-BK10(LMA-1), resistance R P4-8 and five driver IC 17-IC21(74L244) form, distribute BK1-BK3 left and right side bearing and body vibration alarming value to set by program software, BK4-BK6 is that left and right side bearing and body vibrate the shutdown value setting of transfiniting, and BK7, BK8, BK9 and BK10 be left and right sides bearing temperature alarm settings and the setting of left and right sides excessive bearing temperature shutdown value respectively; Single-chip microcomputer 8 is by singlechip chip IC1(8031), memory IC2(2716), address latch IC3(74LS373), address decoder IC5(74L138) and or door IC10, IC11, nor gate IC9-1, IC9-2, NAND gate IC8-1 form, 5 way word signal values of circle collection A-D converter IC22 output, and seriatim with give from data circuits 7 read into the respective settings value relatively, whether decision is reported to the police or is sent halt instruction; Digital display circuit 11 is by decoder IC4(74LS138), 4 driver IC 12-IC15, resistance R 3-R34 and four charactron LED form, LED#1 display channel number wherein, LED#2-LED#4 shows the data of the shown passage of LED#1.The shown channel number of LED#1 can be by manually pressing channel number options button K5 decision, during fault, automatically demonstrate faulty channel number, and demonstrate the numerical value (passage that is connected on the A-D converter IC22 pin 26,27,28,1,2 is defined as the #1-#5 passage respectively) of faulty channel by LED#2-LED#4; Warning halt circuit 10 comprises driver IC 16(74LS377), resistance R P3 and 5 light emitting diode CH1-CH5, the buzzer BP of corresponding each passage and the stopping signal control circuit of forming by NAND gate IC8-2, nor gate IC9-3, resistance R 2, triode T1, diode D1, relay J, when a certain passage reaches when transfiniting the stopping alarm value, send and report to the police and halt instruction, while is corresponding to the LED flash of faulty channel, prompting operations staff guilty culprit is so that fix a breakdown as early as possible; Function key circuit 9 by or door IC6, non-gate ic7, resistance R P1(10K * 4) and monitor work operating key (i.e. monitoring/Pause key) K2, alarm release key K3, printing key K4, passage demonstration options button K5 and reset key K1 form; Printer 12 adopts TP μ P-16A, is to press printing key K4 can print 10 data when prepass by the people.

Fig. 6 is this monitor body structure figure, the front panel of casing 22 is the display operation plate, passage display lamp CH1-CH5 is installed on it, charactron LED1-LED4, power switch, function key and buzzer, be equipped with on the rear board of casing 22 and give the toggle switch BK1-BK10 that puts data, input and output socket, attaching plug, all the other each components are installed on the printed substrate 23 in the casing 22, and the sensing element of each testing circuit links to each other with input socket on being placed in centralized control room internal box 22 rear boards by connecting line 21.

Claims (2)

1, a kind of disintegrating machine monitor is characterized in that it comprises that single-chip microcomputer and the data that link to each other with single-chip microcomputer give circuits, digital display circuit, warning halt circuit, analog to digital conversion circuit and the bear vibration testing circuit that links to each other with this analog to digital conversion circuit input, bearing temperature testing circuit, body vibration detection circuit.

2, disintegrating machine monitor according to claim 1 is characterized in that the temperature detecting resistance that the sensing element of bear vibration testing circuit and body vibration detection circuit and bearing temperature testing circuit adopts the acceleration transducer of built-in charge amplifier to be connected with three-wire system respectively.

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