CN2051627U - Monitor device for positive pressure in disk brake - Google Patents
Monitor device for positive pressure in disk brake Download PDFInfo
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- CN2051627U CN2051627U CN 89215197 CN89215197U CN2051627U CN 2051627 U CN2051627 U CN 2051627U CN 89215197 CN89215197 CN 89215197 CN 89215197 U CN89215197 U CN 89215197U CN 2051627 U CN2051627 U CN 2051627U
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- 238000012806 monitoring device Methods 0.000 claims abstract description 3
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- 238000009434 installation Methods 0.000 abstract description 3
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- 238000012544 monitoring process Methods 0.000 description 3
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Abstract
The utility model relates to a novel monitoring device for positive pressure of a disk brake, which is composed of a force measuring sensor and a digital indicator. When the disk brake on the job, the round die sheet type force measuring sensor fixed on the circumference generates strain which is converted to voltage signals because of being pressed; the voltage signals are amplified by the digital indicator which is composed of a monolithic computer, etc.; after analogue quantity is converted to digital quantity, and digital processing is carried out by using software, the size of measured pressure can be displayed in the way of digits; thus, major accidents caused by the unsuccessful brake of hoisting machines because of the reduction of the positive pressure and the braking force of the brake can be avoided. The device has the advantages of simple structure, advanced and reliable technology, easy installation and fabrication and low cost.
Description
The utility model is to belong to the pressure detection technical field.
Mine hoisting is the throat of mine, and for guaranteeing the safety of mine hoisting, the plate disc brake of gig is a key, it is to stretch the turgor pressure brake shoe by the butterfly spring to produce power, and gig starts once, and lock will move several times, thereby butterfly spring compression, stretching rises is very frequent, if in a single day the butterfly spring lost efficacy (for example: butterfly spring fatigue or fracture), perhaps because of brake block abrasion, brake clearance is big, the capital reduces positive pressure, and braking force diminishes, and will brake incessantly gig and grave accident takes place.Therefore, it is necessary pressing the size of the positive pressure of brake shoe to monitor to the butterfly spring, but at present, in the gig of Shi Yonging, does not occur the monitoring device of this type of drg as yet at home and abroad.
The purpose of this utility model with regard to provide a kind of later-model, can carry out digital monitoring, and the device that can carry out back-up protection and closed loop control to the brake positive pressure of mine hoist plate disc brake to gig.
The utility model mainly is made up of purpose made force transducer and digital indicator two parts.The purpose made force transducer is a kind of fixing garden matrix force transducer of periphery that constitutes with the pool formula strain-gauge of band temperature self-compensation, its strain-gauge has four, and be connected into full-bridge circuit and add+the 6V vdc, utilize the strong principle of pressure measurement, promptly when the brake shoe pressurized, this sensor also is subjected to certain pressure, thereby the fixing garden matrix generation strain of periphery, and this strain is transferred to voltage signal output.Positive pressure is big, and strain is big, the output voltage height.The size of monitoring butterfly spring positive pressure converts non electrical quantity after the electric weight to by this force transducer exactly, flows to the size that digital indicator shows tested positive pressure.
Digital indicator is by zeroing circuit, amplifying circuit, A/D change-over circuit, micro controller system 8039, eight D-latch 74LS373, EPROM2732, and eight bit parallels output serial shift register 74LS164 and seven-segment display digital tube composition.Zeroing circuit is accepted the voltage signal of force transducer output, and carries out checking for zero, and promptly working as positive pressure is zero, is output as zero.The amplifying circuit of being made up of op amp etc.: accept the output voltage of zeroing circuit, and amplify, the voltage signal after the amplification send A/D change-over circuit.The A/D change-over circuit that is made of AD7109 is the digital quantity that the voltage analog of amplifying circuit output is converted to two scale notation output.With micro controller system 8039, address latch 74ls373, EPROM2732, form minimum microcomputer, its interface is formed with a slice 74LS373, the per output of reading an A/D in 0.5 second of this microcomputer, carry out data handing, deliver to display circuit then, in addition, this microcomputer has also possessed the traceability at zero point.By 74LS164, four display circuits that seven-segment display digital tube is formed, in the microcomputer processing data, after Data transmission finishes,, light corresponding charactron wanting content displayed just to be kept among the 74LS164, show the size of tested positive pressure.
The utility model can be monitored the quality of disc type lock butterfly spring and the gap of drg at any time, and the size of the tested positive pressure of numeric display can be carried out back-up protection and closed loop control to elevator system.Whole apparatus structure is simple, and is easily manufactured, easy for installation, and advanced technology is reliable, price economy, reasonable.This device is installed in the mine hoist system, can be avoided because of the grave accident that drg butterfly spring damages, braking force causes inadequately.
Accompanying drawing 1 is a load cell structure scheme drawing of the present utility model.
Accompanying drawing 2 is a force transducer of the present utility model installation site scheme drawing.
Accompanying drawing 3 is a circuit diagram of the present utility model.
Embodiment of the present utility model with reference to the accompanying drawings 1, accompanying drawing 2, accompanying drawing 3 further narrated.
Brake disc 4 one side of mine hoist connects cylinder 3, and another side is by brake shoe 7, at dark groove and the wide groove of 6mm of the back side of brake shoe processing φ 58mm * 6mm, force transducer is put into φ 58 * 6mm at brake shoe 7 back sides
2Groove in, and exceed 0.1 millimeter on brake shoe.Contacted with the brake shoe back side is steel plate 6, and steel plate 6 connects by the drg 5 that axle and butterfly spring 8 constitute.Drg 5 is by the compression of butterfly spring 8, and stretching rises produces pressure N and make that four strain-gaugies 9 of force transducer 1 are under pressure and produce strain in steel plate 2.These four the fixing garden matrixs 9 of periphery that constitute with the pool formula strain-gauge of band temperature self-compensation, to constitute the full-bridge circuit form and to be emitted in the steel plate 2 of force transducer 1, vdc lead-in wire and the strain-gauge of 2+6V of its bridge circuit produce the voltage output lead that strain converts to because of pressurized, be by drawing at the wide groove of the 6mm at the brake shoe back side, be connected to power supply (+6V) and zeroing circuit.
Zeroing circuit is by zero-regulator resistor R
1Constitute clear tube and put Υ black mole Su bucktooth Miao that quarrels in order and cut the glutinous earthworm plaited straw of the lotus root promise green pepper bad shave a man's head of the hot lot of the fried twisted dough sticks mushroom of barking to pieces and blow and close and buy the ξ scrupulously and respectfully amplifying circuit formed of terrified slightly anxious and fearful glutinous sincere 0 grade of S of the prosperous in Su that is contrary to, its line construction is; In the bridge circuit strain-gauge that connects side force sensor 1 through zero-regulator resistor R
1Between voltage signal two ends E, the F of output, connect a capacitor C
17, E holds through resistance R
7After connect 3 ends of op amp (model OP-07) 10, F holds through resistance R
3To the A point, through resistance R
2With shunt resistance R
5, R
6The back is to B point, A point and B point indirect resistance R
4, the B point is through resistance R
8After connect 2 ends of op amp 10, in its 2 end and the indirect capacitor C of 3 ends
18, 3 ends are through resistance R
9, R
10Ground connection is through resistance R
9, R
11, R
13To the C point, 2 ends are through resistance R
12To the C point, the C point is through resistance R
14Connect its 6 end.Between its 4 end and 7 ends and connect capacitor C
19, C
20, and as monitoring the voltage signal end that amplifies.Voltage signal after the 6 ends output of A point and op amp 10 is amplified is to A/D change-over circuit M, N two ends.The magnification factor of amplifying circuit is that 50-100 is doubly adjustable continuously.The A/D change-over circuit is made up of A/D converter (model 7019) 11, resistance, electric capacity, voltage stabilizer 14 etc., by micro controller system (model 8039) 19, address latch (74LS373) 13,16, EPROM(2732) 17, divide to transfer socket 12 etc. to form the microcomputer of minimum, their line connecting relation is: the output of the A point of amplifying circuit connects 2 ends of voltage stabilizer 14 and through resistance R
18, R
19Ground connection, 3 ends of voltage stabilizer 14 are through resistance R
20Ground connection, the 6 ends output of the op amp 10 of amplifying circuit is through resistance R
17Connect 35 ends of A/D converter 11,35 ends are through capacitor C
25Ground connection, 1,19,18,21,20,34,33,29 ends of A/D converter 11 are ground connection separately, 28 terminations-5V, 17,26,27,1 end of 40 terminations+5V and voltage stabilizer 14; 22 ends are through resistance R
15Connect its 23 end, through capacitor C
21Connect its 25 end; 30 ends are through resistance R
16After connect capacitor C respectively
22To its 31 end, connect capacitor C
23To its 32 end; 38 ends are through capacitor C
24Connect its 37 end; 36 termination adjustable resistance R
19Point of adjustment.The eight bit data mouth 9,10,11,12,13,14,15,16 of A/D converter 11 is eight input ends 18,17,14,13,8,7,4,3 of ground connection location (eight D) latch 13 respectively; Corresponding separately pin two 7,28,29,30 ends that connect micro controller system 19 of pin 6,7,8,24 ends of A/D converter 11.10 end ground connection of address latch 13; 11 terminations+5V; 8 ends of 1 termination micro controller system 19; Eight output 2,5,6,9,12,15,16,19 ends connect 19,18,17,16,15,14,13,12 ends of micro controller system 19 respectively.The reset terminal (4 end) that divides the 10 termination micro controller systems 19 of transferring socket 12 divides 11,8,13 ends of transferring socket 12 to connect 5,10,9 ends of micro controller system 19 respectively; At 2 ends and the indirect crystal oscillator of 3 ends of micro controller system 19, these two ends also respectively meet electric C
26, C
27Back ground connection.9 ends of 12 termination EPROM17 of micro controller system 19 and 18 ends of eight D-latchs 16; 40,26,7 terminations+5V; 19 ends connect seven input ends, 3,4,7,8,13,14,17 pins of eight D-latchs 16 respectively and connect 10,11,13,14,15,16,17 ends of EPROM17; 11 ends of 11 terminations, eight D-latchs 16 of micro controller system 19,21,23,24,9,22 ends connect 23,19,21,20,22 ends of EPROM respectively.The pin two of eight D-latchs 16,5,6,9,12,16,19 ends meet 1,2,3,4,5,6,7,8 of EPROM17 respectively.18, the 12 end ground connection of EPROM; 25 ends of micro controller system 19 behind not gate 15 and 22 ends of micro controller system as the output two ends data-signal is flowed to display circuit.Here voltage stabilizer 14 makes the reference voltage input of A/D converter stable as with reference to voltage.That A/D converter will be imported, from the voltage analog of amplifying circuit, convert the digital quantity of binary numeral output to.Form minimum microcomputer by micro controller system 19, EPROM17, eight D-latchs 13,16, the per output of reading an A/D in 0.5 second of this microcomputer, and utilize software to carry out data handing, carry out the voltage analog of A/D conversion and the nonlinear compensation of pressure, data handing finishes, and send 4 seven-segment display digital tubes to show by the size of measuring pressure.In addition, this microcomputer also has root track ability at zero point, this is because the pressure-strain electric bridge, after pressure is removed, strain-gauge wherein can not return to the state (referring to physical property) before the pressurization fully, even this moment, pressure was zero so, electric bridge still has output, make after pressure is removed, telltale still has non-vanishing demonstration.Utilize this microcomputer, the numerical value before measuring can be put into internal memory, in whole measurement process, all the data that obtain are deducted the zero point that originally is kept in the internal memory at every turn, and then carry out data handing, realize following the tracks of zero point.
Display circuit is by four eight bit parallel output serial shift registers (74 LS164) 18, four seven-segment display digital tubes are formed, its circuit is connected to: the output of 25 ends behind not gate 15 by micro controller system 19 connects 8 ends separately that register 18 is moved in four eight bit parallel output serials, connect the input end 1 of first serial shift register 18 by the output of 22 ends of micro controller system 19,2 pins, mouth 13 pins of first most significant bit connect second input end 1,2 pins, mouth 13 pins of second most significant bit connect the 3rd input end 1,2 pins, mouth 13 pins of the 3rd most significant bit connect the 4th input end 1,2 pins, the seven ends output 3 of four eight bit parallel output serial shift registers 18,4,5,6,10,11, each self-corresponding seven segment numerical character display tube of 12 terminations.At micro controller system 19 the tested pressure datas that will show are passed to display circuit, and transmit finish after, content displayed just to be kept among the 74LS164, and light corresponding charactron, intuitively demonstrate by the size of measuring pressure, so that lifting is rushed down insect destructive of the roots of seedlings pair; ず discloses inn Dao beer
Provide each circuit power of the present utility model be voltage ± 5V that mu balanced circuit produced of using always ,+6V.
Claims (2)
1, a kind of later-model plate disc brake positive pressure monitoring device is made up of force transducer and digital indicator, it is characterized in that:
A. the brake disc 4 one of mine hoist and connect cylinder 3, another side is by brake shoe 7, at dark groove and the wide groove of 6mm of the back side of brake shoe processing Φ 58mm * 6mm, in steel plate 2,, be placed on the Φ 58 * 6mm at brake shoe 7 back sides with full-bridge circuit form four force transducers 1 that strain-gauge 9 is constituted placed side by side
2Groove in, and exceed brake shoe 0.1mm; Contacted with the brake shoe back side is steel plate 6, and steel plate 6 connects by axle and the drg 5 that is made of butterfly spring 8; Four lead-in wires that join with four strain-gaugies of bridge circuit, by drawing at the wide groove of the 6mm at the brake shoe back side, be connected to power supply (+6V), zero-regulator resistor R
1Point of adjustment and E, the F input end of amplifying circuit.
B. between amplifying circuit E, F two ends, connect a capacitor C
17, E holds through resistance R
7After connect 3 ends of op amp (OP-07) 10, F holds through resistance R
3To the A point, through resistance R
2With shunt resistance R
5, R
6The back is to the B point; A point and B point indirect resistance R
4, the B point is through resistance R
8After connect 2 ends of op amp 10, in its 2 end and the indirect capacitor C of 3 ends
183 ends are through resistance R
9, R
10Ground connection is through resistance R
9, R
11, R
13To the C point; 2 ends are through resistance R
12To the C point, the C point is through resistance R
14Connect its 6 end; Between its 4 end and 7 ends and connect capacitor C
19, C
20A point in the amplifying circuit and 6 ends of op amp 10 terminate to the input end M.N two ends of A/D change-over circuit as signal output.
2 ends of the M of c.A/D change-over circuit input termination voltage stabilizer 14 and through resistance R
18, R
19Ground connection; The N input end connects 35 ends of A/D converter (AD7109) 11 through resistance R, and 35 ends are through capacitor C
25Ground connection, 3 ends of voltage stabilizer 14 are through resistance R
20Ground connection 1 termination+5V; 1,19,18,21,20,34,33,29 ends of A/D converter 11 are ground connection separately, 28 terminations-5V, and 17,26,27,1 end of 40 terminations+5V and voltage stabilizer 14,22 ends are through resistance R
15Connect its 23 end, through capacitor C
21Connect its 25 end, 30 ends are through resistance R
16After connect capacitor C respectively
22To its 31 end, connect capacitor C
23To its 32 end, 38 ends connect its 37 end through capacitor C, the point of adjustment of 36 termination adjustable resistance R; The eight bit data mouth 9,10,11,12,13,14,15,16 of A/D converter 11 connects eight input ends 18,17,14,13,8,7,4,3 of eight D-latchs (74LS373) 13 respectively, and 6,7,8,24 end correspondences of A/D converter 11 connect 27,28,29,30 ends of micro controller system 19.
D. 10 end ground connection of address latch 13,11 terminations+5V, 8 ends of 1 termination micro controller system (8039) 19, eight output 2,5,6,9,12,15,16,19 ends connect 19,18,17,16,15,14,13,12 ends of micro controller system 19 respectively; Reset terminal 4 ends that divide the 10 termination micro controller systems 19 of transferring socket 12 divide 11,18,13 ends of transferring socket 12 to connect 5,10,9 ends of micro controller system 19 respectively; 2 ends and 3 terminations, one crystal oscillator at micro controller system 19, these two ends also respectively connect ground connection behind capacitor C, the C, 9 ends of 12 termination EPROM (2732) 17 of micro controller system 19,18 ends with eight D-latchs 16,40,26,7 terminations+5V, 19 ends connect seven input ends, 3,4,7,8,13,14,17 pins of eight D-latchs 16 respectively, with 10,11,13,14,15,16,17 ends that meet EPROM17, corresponding respectively 23,19,21,20,22 ends that meet EPROM of 11 ends of 11 terminations, eight D-latchs 16 of micro controller system 19,21,23,24,9122 ends; 18, the 12 end ground connection of EPRMO17; 2,5,6,9,12,15,16,19 ends of eight D-latchs 16 meet 1,2,3,4,5,6,7,8 of EPROM17 respectively; 25 ends of micro controller system 19 connect 8 ends separately of four eight bit parallel output serial shift registers (74LS164) 18 behind not gate 15,1,2 ends of first eight bit parallels output serial shift register 18 of 22 terminations of micro controller system 19.
E. 1,2 ends of second of 13 termination of first eight bit parallel output serial shift register 18,1,2 ends that second 13 terminations are the 3rd, 1,2 ends that the 3rd 13 terminations are the 4th; Each self-corresponding seven-segment display digital tube of 2,4,5,6,10,11,12 terminations of four eight bit parallel output serial shift registers 18.
2, device according to claim 1 is characterized in that: the strain-gauge 9 of force transducer 1 is four fixing garden matrixs of periphery that constitute with the pool formula strain-gauge of band temperature self-compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89215197 CN2051627U (en) | 1989-08-04 | 1989-08-04 | Monitor device for positive pressure in disk brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89215197 CN2051627U (en) | 1989-08-04 | 1989-08-04 | Monitor device for positive pressure in disk brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2051627U true CN2051627U (en) | 1990-01-24 |
Family
ID=4870838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89215197 Withdrawn CN2051627U (en) | 1989-08-04 | 1989-08-04 | Monitor device for positive pressure in disk brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2051627U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100526833C (en) * | 2007-04-26 | 2009-08-12 | 中国矿业大学 | Disc type brake performance detection method and device |
| CN102107654A (en) * | 2009-12-24 | 2011-06-29 | 梅西耶-布加蒂公司 | Method for managing parking brakes in a braking system for vehicles equipped with electric brakes |
| CN102285591A (en) * | 2011-07-13 | 2011-12-21 | 祝凤金 | Braking glide quantity detector for crane |
-
1989
- 1989-08-04 CN CN 89215197 patent/CN2051627U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100526833C (en) * | 2007-04-26 | 2009-08-12 | 中国矿业大学 | Disc type brake performance detection method and device |
| CN102107654A (en) * | 2009-12-24 | 2011-06-29 | 梅西耶-布加蒂公司 | Method for managing parking brakes in a braking system for vehicles equipped with electric brakes |
| CN103332182A (en) * | 2009-12-24 | 2013-10-02 | 梅西耶-布加蒂-道提公司 | Method for managing parking brakes in a braking system for vehicles equipped with electric brakes |
| CN103332182B (en) * | 2009-12-24 | 2015-04-29 | 梅西耶-布加蒂-道提公司 | Method for managing parking brakes in a braking system for vehicles equipped with electric brakes |
| CN102285591A (en) * | 2011-07-13 | 2011-12-21 | 祝凤金 | Braking glide quantity detector for crane |
| CN102285591B (en) * | 2011-07-13 | 2013-11-06 | 祝凤金 | Braking glide quantity detector for crane |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |