CN1038121C - Test method and monitor system for lifted load - Google Patents
Test method and monitor system for lifted load Download PDFInfo
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- CN1038121C CN1038121C CN93110332A CN93110332A CN1038121C CN 1038121 C CN1038121 C CN 1038121C CN 93110332 A CN93110332 A CN 93110332A CN 93110332 A CN93110332 A CN 93110332A CN 1038121 C CN1038121 C CN 1038121C
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- load
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Abstract
The present invention relates to a load detection method and a monitoring system for lifting a vertical well of mines in the process of transportation, which is mainly characterized in that a load sensor is arranged on a lifting container; a lifting load is converted into electrical signals by the load sensor; the electrical signals are transmitted to the well by a transmitter via a lifting wire cable; load signals are received by a receiver on the well and transmitted to a host which is composed of a single chip computer system which diagnoses failures of overload, tank clamping and rope loosing according to the size and the change conditions of the load; the corresponding alarm display and alarm sound signals are transmitted; the running state of a hoisting machine is automatically controlled so as to prevent accidents from occurring, and the purpose for ensuring safe production is achieved.
Description
The invention belongs in the mine vertical shaft transport systems detection method for supervising to load.
At present, real-world operation load to gig in mine vertical shaft promotes does not still have practical method of inspection, therefore, common overload, card jar and slack rope fault in the gig operational process, can't send alerting signal and remind hoister out of service immediately, often cause the serious person and property damage in case this class accident takes place.
The method of inspection that the purpose of this invention is to provide a kind of gig load.By the operating load of gig is detected, diagnose overload, card jar and slack rope fault according to the size of load and situation about changing suddenly, and by monitored control system in time sound and light alarm remind the staff to take the expeditious measures of necessity; Can also be according to the character of load, the running state of automatic guidance gig prevents the generation of fault, plays the purpose that guarantees safe production.
Provided by the inventionly be to promoting the method that operating load detects monitoring:
1. installed load sensor between the pull bar of lifting container and crossbeam is installed signal projector on lifting container, and the output line of sensor connects with the input end of projector, and the mouth of projector is connected on the hoisting cable with lead; Sensor is converted to electric signal with load capacity and flows to signal projector when lifting load, and signal projector arrives ground by wire rope transfers with the electric signal voltage gain behind frequency modulation processing and the power amplifier;
2. install signal receiver and Single Chip Microcomputer (SCM) system on ground, the input end of signal receiver is connected to the shell of gig, and mouth connects Single Chip Microcomputer (SCM) system; Signal receiver will be input to Single Chip Microcomputer (SCM) system through the load electric signal processing and amplifying that steel rope to gig shell transmits; Single Chip Microcomputer (SCM) system is distinguished normal signal and breakdown signal according to magnitude of load, rash break the operating overload of lifting, accidents such as card jar, slack rope, and RST exported to external equipment;
3. the output interface in Single Chip Microcomputer (SCM) system connects external equipment such as acoustic-optic alarm, control setup, chopping machine; When transshipping, blocking fault such as jar, slack rope in the load operation, warning device is reported to the police, and moves with timed unit, and the operation of automatic guidance gig prevents the accident generation; Also can be by each load capacity of printer output and regular accumulative total load capacity.
Above-mentioned method of inspection needs to be realized by following monitored control system: signal generator is installed on the lifting container, and installed load sensor between the pull bar of container and the crossbeam, sensor conductor is connected to the producer input end, and generator output end is connected on the hoisting cable; Indoor signal receiver, Single Chip Microcomputer (SCM) system and the external equipment installed on ground; The input end of signal receiver is connected on the gig shell with lead, and the mouth of signal receiver connects the micro controller system input end, and the micro controller system output interface connects external equipment such as acoustic-optic alarm, control setup, chopping machine.
The invention solves the detection and the monitoring problem of load in the mine vertical shaft lifting transportation, can detect the running state of load timely, prevent the generation of lifting accident effectively, ensure the production safety of mine.The load signal that another characteristics of the present invention are lifting containers is delivered to aboveground ground-surface receiving processing system by hoisting cable, has solved the signal transmission issues that lifting container is in operation, and has formed a kind of unique detection method and monitored control system.
Below in conjunction with the electrical schematic diagram of accompanying drawing 1 monitored control system each several part when accompanying drawing 8 explanation realizes this method, and be described as embodiment.
Fig. 1 is the constructional drawing of load transducer, Fig. 2 and Fig. 3 are the functional block diagram and the electrical schematic diagrams of projector, Fig. 4 and Fig. 5 are the functional block diagram and the electrical schematic diagrams of receptor, Fig. 6 is the functional block diagram of Single Chip Microcomputer (SCM) system, Fig. 7 is the electrical schematic diagram of Single Chip Microcomputer (SCM) system input circuit, and Fig. 8 is the electrical schematic diagram of audible alarm circuit.
1. load transducer
Load transducer as shown in Figure 1, its structure is to post resistance strain gage on the A of sensor face and B face.When lifting load acted on the sensor with the form of pressure, sensor showed with the size of strain, and strain-gauge is that electric signal is given projector with the size conversion of strain.Sensor has left side jar and right jar two covers.
2. projector
The functional block diagram of projector and electrical schematic diagram such as Fig. 2, shown in Figure 3.Lifting load converts voltage signal to by the electric bridge that strain-gauge R1, R2, R3, R4 form, after the measuring amplifier of being made up of 3 high-precision op amp IC1, IC2, IC3 carries out voltage gain again, give voltage controlled oscillator (VCO) (IC5) by voltage follower (IC4), voltage controlled oscillator (VCO) is converted into FM signal with voltage signal, give the power amplifier formed by 4 transistors (BG1-BG4) by voltage follower (IC6) again and promote the series resonator formed by L1 and C1, R21, be transmitted into aboveground at last by hoisting cable.The power supply of projector is obtained by the voltage stabilizing of four mine lamp electricity ground warp regulator blocks.Projector has left side jar and right jar two covers.
3. receptor
The functional block diagram of receptor and electrical schematic diagram such as Fig. 4, shown in Figure 5.The effect of receptor is that projector is received by the frequency modulation load signal that hoisting cable sends, and carries out the amplification and the processing of signal, gives Single Chip Microcomputer (SCM) system at last.
By lead be sent to the preamplifier that load signal on the gig shell is input to receptor through steel rope, preamplifier (IC7) is the voltage amplifier with less magnification factor that has high-pass filter, and it can receive load signal and eliminate 50 hertz power frequency interference; Trap amplifier (IC8) is used for stoping the load signal of another cage and allows the load signal of this cage pass through, and amplifies; Level amplifier (IC9) is not the voltage amplifier with big magnification factor.Receptor is by left side jar and right jar two cover.
The power supply of projector is the civil power by 220V, the direct supply of the positive and negative 5V that obtains through transformation, rectification and voltage regulation filtering.
4. Single Chip Microcomputer (SCM) system
Fig. 6 is the functional block diagram of Single Chip Microcomputer (SCM) system.It comprises input circuit, monolithic microcomputer kernel circuit and output peripheral circuit three parts.
Input circuit as shown in Figure 7, it amplifies the frequency modulation load signal by third stage amplifier (IC10-IC12), and carry out Filtering Processing, become the frequency modulation square wave by schmidt shaping circuit (IC13) shaping then, carrying out photoelectricity by electric coupler isolates, inference elimination is delivered to the T0 and the T1 pin of micro controller system 8031.
An a left side jar frequency modulation load signal enters micro controller system in-to-in counter register THL0 through the exterior T0 pin of micro controller system, the pulse number of a counting machine THL0 record left side jar frequency modulation load signal; Right jar FM signal enters micro controller system in-to-in counter register THL1 through the outside T1 pin of micro controller system, the pulse number of right jar of frequency modulation load signal of counter register THL1 record.The data trap INT that is made up of crystal oscillator and frequency divider produces the INT0 pin that 13 hertz square wave is sent into micro controller system, promptly produced a pulse and propose to interrupt application to INT0 every 1/13 second, micro controller system makes an immediate response and interrupts and take out data in THL0 and the THL1 counter register in interrupt service routine, then to THL0 and THL1 zero clearing, prepare again for count next time.The data of taking out in THL0 and the THL1 counter register are exactly the count value of counter register in 1/13 second.This counting promptly is directly proportional with the size of load according to being directly proportional with the frequency of the FM signal that is sent to T0 and T1 pin.External random access memory RAM is used to deposit in the lifting load data.EPROM is used as program store.Latch QUA is used for latching the least-significant byte address.After load data is given 8 bit decoder BCD and deciphered driving, show the load data of left and right cage by 8 number implement LET.Load can also be printed by mini-printer PRI by printing interface PIO.According to the size of load data, diagnose out the operating overload of gig, card to carry and the slack rope fault by micro controller system, and corresponding fault display lamp BJXSP is lighted and allow audible alarm circuit send alarm sound.When load is very big when card jar and the strict fault of slack rope will take place, micro controller system makes the relay J DP action that powers on through driving circuit PDP, and the normally closed node that is connected in the automatically controlled safety return circuit of gig is opened, just outage of gig, band-type brake and stop.74LS138 address decoder in the schematic diagram provides decoding address for decoder driver, chopping machine and alarm sound.The effect of location switch SW is to award warning when having only cage (skip bucket) to leave the midway location in well head and shaft bottom, when the position in well head and shaft bottom, not in warning.Print the print state that peace button SWP is used for controlling chopping machine, be divided into left side printing and right the printing.System clock CRY adopts 12,000,000 crystal oscillators, and reset circuit RST adopts and powers on and manual complex form.
Fig. 8 is the physical circuit of fault audible alarm.It simulates switch, 3988 music integrated circuit and loud speaker by 74LS77 latch, CD4066 and forms.When transshipping, blocking jar and slack rope fault, send different alarm sounds.The 3988th, a kind of music integrated circuit that can send four kinds of different sounds.
Claims (1)
1. the detection method for supervising of a mine vertical shaft lifting load, installed load sensor between the pull bar of lifting container and crossbeam at first, its feature also is:
1.1 install signal projector on lifting container, transmitter input end is connected on the load transducer, the projector mouth is connected on the hoisting cable, and load transducer is that electric signal flows to signal projector with the size conversion of load; Signal projector with the electric signal processing and amplifying after by wire rope transfers to ground;
1.2 install signal receiver and Single Chip Microcomputer (SCM) system on ground, the input lead of signal receiver connects the input end that gig shell, mouth connect Single Chip Microcomputer (SCM) system; Receptor is received the load signal that transmits from steel rope after processing and amplifying is transported to Single Chip Microcomputer (SCM) system, and Single Chip Microcomputer (SCM) system is distinguished normal signal and breakdown signal according to magnitude of load, flows to external equipment;
1.3 the mouth of Single Chip Microcomputer (SCM) system connects external equipment such as warning device, control setup, chopping machine; When transship, block jar and during fault such as slack rope, warning device sends the knocking noise optical signal, control setup moves the operation of automatic guidance gig simultaneously and prevents that accident from taking place; By printer output lifting load amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110332A CN1038121C (en) | 1993-03-24 | 1993-03-24 | Test method and monitor system for lifted load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110332A CN1038121C (en) | 1993-03-24 | 1993-03-24 | Test method and monitor system for lifted load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1092738A CN1092738A (en) | 1994-09-28 |
| CN1038121C true CN1038121C (en) | 1998-04-22 |
Family
ID=4988209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93110332A Expired - Fee Related CN1038121C (en) | 1993-03-24 | 1993-03-24 | Test method and monitor system for lifted load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038121C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102009887B (en) * | 2010-10-30 | 2013-07-24 | 枣庄矿业（集团）有限责任公司蒋庄煤矿 | Overload lowering prevention monitoring system of main shaft friction type hoister |
| CN102854018B (en) * | 2012-09-27 | 2015-11-18 | 无锡华科机械设备有限公司 | Hoister Intelligent testing test stand |
| FI126182B (en) * | 2014-06-17 | 2016-07-29 | Kone Corp | Method and arrangement for monitoring the condition of an elevator rope |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057439A (en) * | 1990-06-22 | 1992-01-01 | 三菱电机株式会社 | Elevator control device |
-
1993
- 1993-03-24 CN CN93110332A patent/CN1038121C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057439A (en) * | 1990-06-22 | 1992-01-01 | 三菱电机株式会社 | Elevator control device |
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| Publication number | Publication date |
|---|---|
| CN1092738A (en) | 1994-09-28 |
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