CN106801711A - A kind of control system of drum-type mine car brake - Google Patents
A kind of control system of drum-type mine car brake Download PDFInfo
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- CN106801711A CN106801711A CN201510838310.5A CN201510838310A CN106801711A CN 106801711 A CN106801711 A CN 106801711A CN 201510838310 A CN201510838310 A CN 201510838310A CN 106801711 A CN106801711 A CN 106801711A
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Abstract
The invention discloses a kind of control system of drum-type mine car brake, the friction plate is with brake-shoe outside brake drum, the brake-shoe is provided with waist-shaped hole and rotary column, limited post is provided with the waist-shaped hole, wheel cylinder is provided with the radiation shell, the cylinder body of the wheel cylinder is fixed on radiation shell inwall, the piston rod of the wheel cylinder is connected with rotary column, displacement transducer is respectively equipped with the piston rod of the wheel cylinder, pressure sensor is provided with the wheel cylinder, ECU and display are provided with the mine car, institute's displacement sensors, pressure sensor, display is connected with ECU respectively, the ECU is connected with hydraulic shunt pump controller.Technical purpose of the invention is to provide a kind of abrasion condition that can in real time understand friction plate, the eccentric wear of friction plate can be reduced by controlling the hydraulic pressure in wheel cylinder, the drum-type mine car braking control system of warning can be sent when brake fluid pressure is not enough.
Description
Technical field
The present invention relates to drum-type mine car brake field, particularly a kind of control system of drum-type mine car brake.
Background technology
Brake application is in various vehicles, each car will in the process of moving slow down, stop, this is accomplished by the control of brake, the reliability of brake is most important to the safety driven a vehicle, and factor is all the critical performance parameters of brake etc. the brake reaction time of reliability, brake, the braking distance of brake including brake.
Vehicle brake is generally divided into drum brake and disk brake, and in mine car field, what usual brake was used is all drum brake, and drum brake has the advantages that low cost, the smaller, braking ability that takes up space is outstanding, safeguard simple.Mine car is generally road conditions are poor, bending, travel on the road that ramp is long, the gradient is steep, brake can be often used in the process of moving, and the weight of mine car is big, at the same speed, inertia that mine car has is big, therefore reliability to brake has requirement very high with the braking effect of brake.The drum brake weak heat-dissipating used on mine car, after the structure to drum brake is transformed, also to have reasonably can be controlled after transformation to improved mechanical structure, there can be a set of reasonable control system to drum brake just to seem extremely important, this control system must be accurate, reliable, simultaneously, in traditional control system, substantially the abrasion condition that all can not in real time understand friction plate and the eccentric wear for reducing friction plate, it is to avoid can not more renewal of facing renewal in time when friction plate is excessively thin.
The content of the invention
For the deficiency that above-mentioned mine car brake control system is present, technical purpose of the invention is to provide a kind of abrasion condition that can in real time understand friction plate, the eccentric wear of friction plate can be reduced by controlling the hydraulic pressure in wheel cylinder, the drum-type mine car braking control system of warning can be sent when brake fluid pressure is not enough, and this control system causes safer during the traveling of mine car.
The present invention is achieved through the following technical solutions：
A kind of control system of drum-type mine car brake, the mine car brake includes：Brake-shoe, friction plate, brake drum, the friction plate is on brake-shoe, the friction plate is with brake-shoe outside brake drum, the brake-shoe, friction plate is with brake drum inside radiation shell, the brake-shoe is provided with waist-shaped hole and rotary column, limited post is provided with the waist-shaped hole, wheel cylinder is provided with the radiation shell, the cylinder body of the wheel cylinder is fixed on radiation shell inwall, the piston rod of the wheel cylinder is connected with rotary column, it is characterized in that, displacement transducer is respectively equipped with the piston rod of the wheel cylinder, pressure sensor is provided with the wheel cylinder, ECU and display are provided with the mine car, institute's displacement sensors, pressure sensor, display is connected with ECU respectively, the ECU is connected with hydraulic shunt pump controller.
In above-mentioned technical proposal, by being provided with displacement transducer on the piston rod of wheel cylinder, displacement transducer is set to measure distance of stretch out and draw back of the piston rod in braking procedure, the thickness of friction plate can be calculated by the distance of stretch out and draw back of piston rod, whether the pressure that can be measured by the pressure sensor being provided with wheel cylinder is normal, or whether the pressure value of braking can be reached in braking procedure, the data-signal that displacement transducer and pressure sensor will all be measured is sent to ECU, the ECU can send the on-position signal for showing brake by signal transacting to display, by giving hydraulic shunt pump controller sending signal order, enable to produce different pressure values in two groups of wheel cylinders, correct the eccentric wear situation of friction plate.
A kind of control system of drum-type mine car brake, the numerical signal of four displacement S that institute's displacement sensors will be measured is transmitted to ECU, the maximum Smax of displacement is preset with the ECU, if during S ＞ Smax, then the ECU is judged as friction disc wear excessively, and the ECU sends the information warning of display " more renewal of facing renewal " printed words to display, in S≤Smax, the real time data information of brake block thickness can be transmitted to display by the ECU, so that driver understands vehicle condition；Shift value respectively S1, S2, S3, S4 that four displacement transducers are measured, described S1, S2 are the displacement of the piston rod of the braking wheel cylinder that same brake-shoe is provided with, the displacement of the piston rod of the braking wheel cylinder that the same brake-shoe of S3, S4 is provided with, the corresponding wheel cylinder of described S1, S3 is with a brake pipe, the corresponding wheel cylinder of described S2, S4 with a brake pipe, if S1+S3-（S2+S4）During ＞ △ S, then ECU is emitted to the oil pressurization in the corresponding wheel cylinder of S1, S3 to hydraulic shunt pump controller, and the pressure is 1.2 times of the oil pressure in the corresponding wheel cylinder of S2, S4；
Fuel injection pressure signal P in the wheel cylinder that the pressure sensor will be measured sends ECU to, the maximum Pmax of pressure is preset with the ECU, if P is more than Pmax, then the ECU is judged as that the oil pressure in wheel cylinder is excessive, and the ECU sends the information warning of display " braking oil pressure is excessive " printed words to display；During braking, if the oil pressure P in wheel cylinder is less than Pmin, the Pmin is minimum oil pressure value when braking, then the ECU is judged as that oil pipe pipeline is destroyed, and the ECU sends the information warning of display " brakes is dangerous " printed words to display.
In above-mentioned technical proposal, the displacement S measured by displacement transducer located at in-car ECU is compared with the maximum Smax that displacement is preset with ECU, judge friction plate whether excessive wear, and include in display screen the data message of friction plate, S2, S4 data analysis contrast by S1, the S3 located at same group with same group, by formula S1+S3-（S2+S4）To judge friction plate, whether this carries out eccentric wear amendment to ＞ △ S, eccentric wear amendment to friction plate then passes through ECU to the oil pressure size in hydraulic shunt pump control oil pipe, and the pressure value that control friction plate two ends are acted on brake drum can realize the thickness amendment to friction plate；ECU judges whether wheel cylinder is normally carried out work by judging the pressure value of pressure sensor so that controlling unit is few, and control process becomes simple and reliable.
A kind of control system of drum-type mine car brake, institute's displacement sensors are digital grating displacement sensor.
In above-mentioned technical proposal, displacement transducer is set to digital grating displacement sensor, described digital grating displacement sensor have measurement precisely, the data of measurement are not the characteristics of need the well lid signal processor can be transmitted directly to ECU and carry out data processing, and digital grating displacement sensor must with it is shockproof can long-time reliably working with waterproof ability.
A kind of control system of drum-type mine car brake, the pressure sensor is resistance strain gage pressure sensor.
In above-mentioned technical proposal, because the pressure of pressure sensor measurement is braking oil pressure, the environment of measurement is more severe, therefore from the resistance strain gage pressure sensor with the characteristic such as antidetonation, high pressure resistant, anti-corrosion, grease proofing.
The beneficial effects of the invention are as follows:
1st, by being provided with displacement transducer on the piston rod of wheel cylinder, displacement transducer surveys data and can send the ECU treatment of mine car to, and the result for the treatment of can be shown in the display so that driver can in real time understand the working condition of brake bush, if the more renewal of facing renewal；
2nd, by being provided with pressure sensor in wheel cylinder, ECU is by analyzing the data of pressure sensor, so as to judge whether the brakes of mine car exception occurs, the brake fault information that mine car occurs can in time allow driver to recognize；
3rd, by ECU to displacement transducer survey data and pressure sensor surveys the analysis of data-signal, whether can occur to friction plate eccentric wear and occur eccentric wear after can correct eccentric wear so that the friction of friction plate is evenly so that braking ability is more preferable.
Brief description of the drawings
Fig. 1 is control schematic diagram of the invention.
Fig. 2 is structural representation of the invention.
Marked in figure：1 is brake-shoe, 2 is friction plate, 3 is brake drum, 4 is radiation shell, 5 is return spring, 6 is wheel cylinder, 7 is limited post, 8 is waist-shaped hole, 9 is rotary column.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
A kind of control system of the drum-type mine car brake as shown in Fig. 1 and accompanying drawing 2, the mine car brake includes：Brake-shoe 1,Friction plate 2,Brake drum 3,The friction plate 2 is on brake-shoe 1,The friction plate 2 is with brake-shoe 1 outside brake drum 3,The brake-shoe 1,Friction plate 2 is with brake drum 3 inside radiation shell 4,The brake-shoe 1 is provided with waist-shaped hole 8 and rotary column 9,Limited post 7 is provided with the waist-shaped hole 8,Wheel cylinder 6 is provided with the radiation shell 4,The cylinder body of the wheel cylinder 6 is fixed on the inwall of radiation shell 4,The piston rod of the wheel cylinder 6 is connected with rotary column 9,It is characterized in that,Displacement transducer is respectively equipped with the piston rod of the wheel cylinder 6,Pressure sensor is provided with the wheel cylinder 6,ECU and display are provided with the mine car,Institute's displacement sensors,Pressure sensor,Display is connected with ECU respectively,The ECU is connected with hydraulic shunt pump controller；
The numerical signal of four displacement S that institute's displacement sensors will be measured is transmitted to ECU, the maximum Smax of displacement is preset with the ECU, if during S ＞ Smax, then the ECU is judged as the excessive wear of friction plate 2, the ECU sends the information warning of display " more renewal of facing renewal " printed words to display, in S≤Smax, the real time data information of brake block thickness can be transmitted to display by the ECU, so that driver understands vehicle condition；Shift value respectively S1, S2, S3, S4 that four displacement transducers are measured, described S1, S2 are the displacement of the piston rod of the braking wheel cylinder 6 that same brake-shoe 1 is provided with, the displacement of the piston rod of the braking wheel cylinder 6 that the same brake-shoe 1 of S3, S4 is provided with, the corresponding wheel cylinder 6 of described S1, S3 is with a brake pipe, the corresponding wheel cylinder 6 of described S2, S4 with a brake pipe, if S1+S3-（S2+S4）During ＞ △ S, then ECU is emitted to the oil pressurization in the corresponding wheel cylinder 6 of S1, S3 to hydraulic shunt pump controller, and the pressure is 1.2 times of the oil pressure in the corresponding wheel cylinder 6 of S2, S4；
The fuel injection pressure signal P in wheel cylinder 6 that the pressure sensor will be measured sends ECU to, the maximum Pmax of pressure is preset with the ECU, if P is more than Pmax, then the ECU is judged as that the oil pressure in wheel cylinder 6 is excessive, and the ECU sends the information warning of display " braking oil pressure is excessive " printed words to display；During braking, if the oil pressure P in wheel cylinder 6 is less than Pmin, the Pmin is minimum oil pressure value when braking, then the ECU is judged as that oil pipe pipeline is destroyed, and the ECU sends the information warning of display " brakes is dangerous " printed words to display；
Institute's displacement sensors are digital grating displacement sensor, and the digital grating displacement sensor has shockproof, water-proof function；The pressure sensor is resistance strain gage pressure sensor, and the resistance strain gage pressure sensor has antidetonation, high pressure resistant, anti-corrosion, oil-resistant function.
The process of the control system of drum-type mine car brake of the invention is：
1st, when mine car is braked, the piston rod of wheel cylinder 6 promotes brake-shoe 1 to hold shifting level with both hands to brake drum is compressed, displacement transducer measure wheel cylinder 6 piston rod movement apart from S, if the shift value S of the friction plate that displacement transducer is measured is more than the maximum Smax that displacement is preset with ECU, then the ECU is judged as the excessive wear of friction plate 2, the ECU sends the information warning of display " more renewal of facing renewal " printed words to display, in S≤Smax, the real time data information of brake block thickness can be transmitted to display by the ECU, so that driver understands vehicle condition；The fuel injection pressure signal P in wheel cylinder 6 that the pressure sensor being provided with wheel cylinder 6 will can be measured sends ECU to, the maximum Pmax of pressure is preset with the ECU, if P is more than Pmax, then the ECU is judged as that the oil pressure in wheel cylinder 6 is excessive, and the ECU sends the information warning of display " braking oil pressure is excessive " printed words to display；During braking, if the oil pressure P in wheel cylinder 6 is less than Pmin, the Pmin is minimum oil pressure value when braking, then the ECU is judged as that oil pipe pipeline is destroyed, and the ECU sends the information warning of display " brakes is dangerous " printed words to display；If S1+S3-（S2+S4）During ＞ △ S, then ECU is emitted to the oil pressurization in the corresponding wheel cylinder 6 of S1, S3 to hydraulic shunt pump controller, the pressure is 1.2 times of the oil pressure in the corresponding wheel cylinder 6 of S2, S4, so that the abrasion of friction plate 2 is adjusted into poised state, so that in braking, braking effect is more preferable.
Claims (4)
1. a kind of control system of drum-type mine car brake, the mine car brake includes：Brake-shoe（1）, friction plate（2）, brake drum（3）, the friction plate（2）Located at brake-shoe（1）On, the friction plate（2）With brake-shoe（1）Located at brake drum（3）Outside, the brake-shoe（1）, friction plate（2）With brake drum（3）Located at radiation shell（4）Inside, the brake-shoe（1）It is provided with waist-shaped hole（8）And rotary column（9）, the waist-shaped hole（8）Inside it is provided with limited post（7）, the radiation shell（4）Inside it is provided with wheel cylinder（6）, the wheel cylinder（6）Cylinder body be fixed on radiation shell（4）On inwall, the wheel cylinder（6）Piston rod and rotary column（9）Connection, it is characterised in that the wheel cylinder（6）Piston rod on be respectively equipped with displacement transducer, the wheel cylinder（6）Pressure sensor is inside provided with, ECU and display are provided with the mine car, institute's displacement sensors, pressure sensor, display are connected with ECU respectively, and the ECU is connected with hydraulic shunt pump controller.
2. the control system of drum-type mine car brake according to claim 1, it is characterized in that, the numerical signal of four displacement S that institute's displacement sensors will be measured is transmitted to ECU, and the maximum Smax of displacement is preset with the ECU, if during S ＞ Smax, the ECU is judged as friction plate（2）Excessive wear, the ECU sends the information warning of display " more renewal of facing renewal " printed words to display, and in S≤Smax, the real time data information of brake block thickness can be transmitted to display by the ECU, so that driver understands vehicle condition；Shift value respectively S1, S2, S3, S4 that four displacement transducers are measured, described S1, S2 are same brake-shoe（1）The braking wheel cylinder being provided with（6）Piston rod displacement, the same brake-shoe of S3, S4（1）The braking wheel cylinder being provided with（6）Piston rod displacement, the corresponding wheel cylinder of described S1, S3（6）With with a brake pipe, the corresponding wheel cylinder of described S2, S4（6）With with a brake pipe, if S1+S3-（S2+S4）During ＞ △ S, then ECU is emitted to the corresponding wheel cylinder of S1, S3 to hydraulic shunt pump controller（6）Interior oil pressurization, the pressure is the corresponding wheel cylinder of S2, S4（6）1.2 times of interior oil pressure；
The wheel cylinder that the pressure sensor will be measured（6）Interior fuel injection pressure signal P sends ECU to, and the maximum Pmax of pressure is preset with the ECU, if P is more than Pmax, the ECU is judged as wheel cylinder（6）Interior oil pressure is excessive, and the ECU sends the information warning of display " braking oil pressure is excessive " printed words to display；During braking, if wheel cylinder（6）Interior oil pressure P is less than Pmin, and the Pmin is minimum oil pressure value when braking, then the ECU is judged as that oil pipe pipeline is destroyed, and the ECU sends the information warning of display " brakes is dangerous " printed words to display.
3. the control system of the drum-type mine car brake according to claim 1,2, it is characterized in that, institute's displacement sensors are digital grating displacement sensor.
4. the control system of the drum-type mine car brake according to claim 1,2, it is characterized in that, the pressure sensor is resistance strain gage pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510838310.5A CN106801711A (en) | 2015-11-26 | 2015-11-26 | A kind of control system of drum-type mine car brake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510838310.5A CN106801711A (en) | 2015-11-26 | 2015-11-26 | A kind of control system of drum-type mine car brake |
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| CN106801711A true CN106801711A (en) | 2017-06-06 |
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| CN201510838310.5A Pending CN106801711A (en) | 2015-11-26 | 2015-11-26 | A kind of control system of drum-type mine car brake |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962506A (en) * | 2021-02-24 | 2022-08-30 | 广州汽车集团股份有限公司 | Measuring equipment for sliding resistance of friction plate |
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