CN103453054A - Disc brake system and method for controlling same - Google Patents
Disc brake system and method for controlling same Download PDFInfo
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- CN103453054A CN103453054A CN2012101739933A CN201210173993A CN103453054A CN 103453054 A CN103453054 A CN 103453054A CN 2012101739933 A CN2012101739933 A CN 2012101739933A CN 201210173993 A CN201210173993 A CN 201210173993A CN 103453054 A CN103453054 A CN 103453054A
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Abstract
The invention discloses a disc brake system. The disc brake system comprises an oil source, a proportional valve, a plurality of groups of brake caliper cylinders and an electronic control system. The oil source is communicated with the plurality of groups of brake caliper cylinders through the proportional valve, a corresponding switch valve is arranged between at least one of the plurality of groups of brake caliper cylinders and the proportional valve, the proportional valve and the switching valves are electrically connected with the electronic control system, and the electronic control system is used for controlling pressure regulating of the proportional valve and on and off of the switching valve.
Description
Technical field
The present invention relates to stop system and control described dish stop method, particularly a kind of automaitc shfit of hydraulic disc brake braking oil pressure and the segmentation pressure regulating method of system of a kind of dish.
Background technique
Hydraulic disc brake has the advantages such as brake torque is large, braking is reliable, convenient operation and control with respect to band brake, thereby is used widely on oil-well rig, well repairing machine, tractor hoist.
Please refer to Fig. 1, Fig. 1 is the schematic diagram of a kind of typical hydraulic control loop of disk type brake.The typical hydraulic control loop of this disk type brake is comprised of critical pieces such as oil sources 1, brake valve 2, brake lever 3, braking clamp cylinders 4～9.Brake valve 2 is divided into two types of driller ' s valve and electro-hydraulic proportional valves (referred to as Proportional valve).Brake lever 3 is divided into two types, mechanical brake handle and electric brake handle.But the mechanical brake handle must be corresponding with driller ' s valve, the electric brake valve must be corresponding with Proportional valve.The corner of the brake lever 3 that adjusting is connected with brake valve 2, can make oil sources 1 through brake valve 2 output oil pressures, and be applied on braking clamp cylinder 4～9, produces corresponding braking moment.The corner of regulating continuously brake lever 3 continuously regulating action to the oil pressure on the braking clamp cylinder, and then continuous adjustment disk braking moment.
At present, two problems of above-mentioned hydraulic disc brake ubiquity:
When 1, dish is stopped design, generally all adopt larger safety coefficient with the reply emergency work condition, but cause thus the too low problem of brake oil pressure under nominal situation.The too low impact of the brake-force control on the underloading stage of brake oil pressure is very large, has also caused the long-term meaningless loss of pincers cylinder, brake block and hydraulic oil simultaneously.
2, existing brake valve only has the single linear voltage adjustment characteristic, oil pressure is regulated variance ratio and is immobilized all the time, can't meet the specific (special) requirements of different work operating mode, required fine adjustment characteristic while boring operation as sent, required fast response characteristic etc. when required moderate performance characteristic and accident treatment during round trip.
Reducing safety coefficient and be conducive to improve pincers cylinder working efficiency, also can improve the control effect in underloading stage, is obviously worthless but take the idea that the sacrificial system Security is cost; Though the imagination of non-linear brake valve is good, from design, with manufacturing angle, be to be difficult to realize.
Summary of the invention
The purpose of this invention is to provide stop system and control the stop method of system of described dish of a kind of dish.
A kind of dish system of stopping, comprise oil sources, Proportional valve, organize braking clamp cylinder and automatical control system more, described oil sources is connected with described many group braking clamp cylinders by described Proportional valve, in described many group braking clamp cylinders at least one group with described Proportional valve between be provided with corresponding switch valve, described Proportional valve and described switch valve are electrically connected to described automatical control system, and described automatical control system is for controlling the switch of described Proportional valve pressure regulation and the described switch valve of control.
A kind of control as the stop method of system of above-mentioned dish comprises:
When the indicated corner of the angular signal of described electric brake handle is positioned at different angle ranges, control the switch of different switch valves or switch valve combination, and control and different control signal to described Proportional valve so that described Proportional valve increases or reduce oil pressure.
With the braking oil pressure regulating method of existing hydraulic disc brake, compare, the present invention has following beneficial effect:
1, too low brake oil pressure can be switched to the higher pressure regulation section of sensitivity by automatically upgrade (reducing unnecessary pincers cylinder), significantly improve thus the braking in underloading stage and control effect;
2, can significantly improve the handling of brake lever, the piece wire characteristic that utilizes braking oil pressure to regulate meets the specific (special) requirements of different work operating mode to braking characteristic;
3,, during nominal situation, part can be clamped to cylinder and automatically proceed to dormant state (suspend and use), thereby reduce the long-term meaningless loss of pincers cylinder, brake block, hydraulic oil;
While 4, dealing with an urgent situation, can automatically stand-by pincers cylinder all be incorporated to braking system according to the operation intention of brake lever, produce maximum braking moment and guarantee safety.
The accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of typical hydraulic control loop of traditional disk type brake.
Fig. 2 is dish that one embodiment of the invention the provides structural representation of system of stopping.
Fig. 3 is the workflow diagram of gear-shifting control method.
Fig. 4 is the geometrical relationship schematic diagram of up segmentation mapping method.
Fig. 5 is the example schematic diagram that dish of the present invention is stopped the gear shifting hydraulic control loop.
Fig. 6 is the circuit theory diagrams of the ECU (Electrical Control Unit) of the present embodiment.
Embodiment
Specific works principle of the present invention is: 1, by the grouping of braking clamp cylinder, according to gear-shifting control method, the pincers cylinder is combined into to the Mobile state switching, by isolation or interpolation pincers cylinder quantity, makes be complementary by pincers cylinder number and the best oil pressure scope of braking; 2, adopt the segmentation mapping method to be converted the simple linear angle relation of electric brake handle.Realize the piecewise linearity pressure regulation of brake oil pressure by electro-hydraulic proportional valve (being designated hereinafter simply as Proportional valve).Introduce the specific embodiment of the present invention below in conjunction with accompanying drawing.
Please refer to Fig. 2, Fig. 2 is dish that one embodiment of the invention the provides structural representation of system of stopping.This dish system 100 of stopping comprises oil sources 1, Proportional valve 2, organizes braking clamp cylinder 8～13 and automatical control system 110 more, described oil sources 1 is connected with described many group braking clamp cylinders 8～13 by described Proportional valve 2, in described many group braking clamp cylinders 8～13 at least one group with described Proportional valve 2 between be provided with corresponding switch valve (can be electromagnetic switch valve) 3～5, described Proportional valve 2 and described switch valve 3～5 are electrically connected to described automatical control system 110, and described automatical control system 110 is for controlling the switch of described Proportional valve 2 pressure regulation and the described switch valve 3～5 of control.
Optionally, automatical control system 110 comprises ECU (Electrical Control Unit) 7 and electric brake handle 6, described Proportional valve 2 and described switch valve 3～5 are electrically connected to described ECU (Electrical Control Unit) 7, described ECU (Electrical Control Unit) 7 is electrically connected to described electric brake handle 6, described electric brake handle 6 produces angular signal and exports described ECU (Electrical Control Unit) 7 to according to rotational angle, and described ECU (Electrical Control Unit) 7 is controlled described Proportional valve 2 pressure regulation according to described angular signal and controlled the switch of described switch valve 3～5.
Optionally, described ECU (Electrical Control Unit) 110 is for when the indicated corner of described angular signal is positioned at different angle ranges, control the switch of different switch valves or switch valve 3～5 combinations, and control and different control signal to described Proportional valve 22 so that described Proportional valve increases or reduce oil pressure.
Optionally, one group in described many group braking clamp cylinders 8～13 directly is communicated to described Proportional valve 2, and in described many group braking clamp cylinders, other groups of 8～13 are communicated to described Proportional valve 2 by each self-corresponding switch valve 3～5 respectively.
Optionally, in every group of described braking clamp cylinder 8～13, the number of braking clamp cylinder is one or more.
Concrete example, the hydraulic oil of oil sources 1 output is applied on the gear shift loop be comprised of electromagnetic switch valve (being designated hereinafter simply as switch valve) 3～5 after the pressure regulation of Proportional valve 2.Wherein, switch valve 3～5 can be divided into braking clamp cylinder 8～13 4 kinds of combination relations (combination relation not immobilizes, and can, according to the actual quantity of pincers cylinder, by 1～3 switch valve, realize 2～4 kinds of combinations).Proportional valve 2 and switch valve 3～5 all are subject to the control of electronic control unit (being designated hereinafter simply as ECU (Electrical Control Unit)) 7, and ECU (Electrical Control Unit) 7 is that the angular signal, gear-shifting control method and the segmentation mapping method that according to electric brake handle 6, provide carry out work.
Please refer to Fig. 3, Fig. 3 is the workflow diagram of gear-shifting control method.In Fig. 3, ECU (Electrical Control Unit) 7, after the angular signal Vx of read electric brake lever 6, first will be carried out the judgement of pressure regulation direction.If up pressure regulation direction, by Vx and up gear shift critical value V
uP.ncompare, on the contrary with descending gear shift critical value V
lW.ncompare, judge whether to need gear shift.If judgement need to increase shelves, the output that current oil pressure reduced by half increases 1 grade simultaneously; If judgement need to lower category, current oil pressure is doubled to output, reduce by 1 grade simultaneously; If judgement without gear shift, makes oil pressure multiplication relation constant and do not do gear switch.The concrete corresponding relation of gear shift is as follows:
When switch valve 3～5 all cuts off the power supply, pincers cylinder 8 keeps connecting (I shelves); 3 logical 4 disconnected 5 cylinders of pincers when disconnected 8～9 are connected (II shelves); 3 logical 4 logical 5 cylinders of pincers when disconnected 8～11 are connected (III shelves), and 3～5 cylinders of pincers while all switching on 8～13 are connected (IV shelves).
Please refer to Fig. 4, Fig. 4 is the geometrical relationship schematic diagram of up segmentation mapping method.
V in Fig. 4
uP.nfor up gear shift critical value, U
uP.nfor up mapping critical value, n is that the transition point sequence number can be determined according to actual needs, and the mapping relations of current electric brake handle corner Vx and current mapping voltage U y are realized by following interpolating method formula:
Uy＝U
UP.2+(U
UP.3-U
UP.2)/(V
UP.3-V
UP.2)×(V
x-V
UP.2)+U
UP.2
The Uy calculated is carried out to the DA conversion, and the analog voltage after conversion is sent into Proportional valve for regulating oil pressure.
Descending segmentation mapping method is similar to up segmentation mapping method, as long as change the footnote UP in segmentation mapping method formula into LW, and the relevant parameter of substitution down direction gets final product.
Segments in the segmentation mapping method and the parameter value of each transition point all can be determined according to actual needs.In general, segmentation is thinner, approaches non-linearly, controls just more steady.
The hardware circuit of ECU (Electrical Control Unit) 7 is comprised of elements such as AD converter, one-chip computer, power relay, DA transducer, power amplifiers, and its effect has been that the data capture, gear shift control algorithm, segmentation mapping calculation, switch valve of electric brake handle corner voltage controlled, DA conversion etc.ECU (Electrical Control Unit) can be based on the electronic unit row of the present patent application content (not) of one-chip computer, programmable controller or other embedded system principles.
With the braking oil pressure regulating method of existing hydraulic disc brake, compare, the present invention has following advantage or characteristics:
Too low brake oil pressure can be switched to the higher pressure regulation section of sensitivity by automatically upgrade (reducing unnecessary pincers cylinder), significantly improve thus the braking in underloading stage and control effect;
Can significantly improve the handling of electric brake handle, the piece wire characteristic that utilizes braking oil pressure to regulate meets the specific (special) requirements of different work operating mode to braking characteristic;
During nominal situation, part can be clamped to cylinder and automatically proceed to dormant state (suspend and use), thereby reduce the long-term meaningless loss of pincers cylinder, brake block, hydraulic oil;
While dealing with an urgent situation, can automatically stand-by pincers cylinder all be incorporated to braking system according to the operation intention of electric brake handle, produce maximum braking moment and guarantee safety.
The present embodiment can be applied to the JC70 type boring winch of rated power 1470KW, and the dish system of stopping of its configuration comprises, brake disc (diameter * width): 1600mm * 76mm; Braking clamp cylinder assembly: 2 of 4 of open type working clamps and normal close type catch blocks; Hydraulic power nominal operation oil pressure 10MPa.
Please refer to Fig. 5, Fig. 5 is the example schematic diagram that dish of the present invention is stopped the gear shifting hydraulic control loop.4 open type working clamp cylinders in Fig. 5, form 3 grades of relations by 2 electromagnetic switch valves.Adopt 3 sections mapping methods, the up-downgoing paths merge, 4 critical gear shift voltages are chosen to be respectively 0V, 3.87V, 6.71V and 10V, and 4 critical mapping voltages are correspondingly elected respectively 0V, 2.28V, 6.95V and 10V as.
Please refer to Fig. 6, Fig. 6 is the circuit theory diagrams of the ECU (Electrical Control Unit) of the present embodiment.In Fig. 6, MCU adopts 51 type one-chip computers, and AD and DA adopt respectively ADC0808 and DAC0832 chip, and power relay is DC24V2A, and power amplifier is LM741.
Result shows, automaitc shfit pressure regulation and piecewise linearity voltage-regulating technique that the present invention sets up are feasible, and using effect is better than original disk type brake, is expected to become the upgrading technology of prior art.
The present invention also provides a kind of stop method of system of above-mentioned dish of controlling, and the description in above-described embodiment also is applicable to this method.This method comprises:
When the indicated corner of described angular signal is positioned at different angle ranges, controls the switch of different switch valves or switch valve combination, and control and different control signal to described Proportional valve so that described Proportional valve increases or reduce oil pressure.
Optionally, described when the indicated corner of described angular signal is positioned at different angle ranges, the switch of controlling different switch valves or switch valve combination comprises:
ECU (Electrical Control Unit), after the angular signal Vx of read electric brake lever, is carried out the judgement of pressure regulation direction;
If up pressure regulation direction, compare Vx and up gear shift critical value VUP.n, otherwise compare with descending gear shift critical value VLW.n, judge whether to need gear shift;
If judgement need to increase shelves, the output that current oil pressure reduced by half increases 1 grade simultaneously; If judgement need to lower category, current oil pressure is doubled to output, reduce by 1 grade simultaneously; If judgement without gear shift, makes oil pressure multiplication relation constant and do not do gear switch; Wherein, the switch valve that different gear correspondences is different or the switch of switch valve combination.
Optionally, when the indicated corner of described angular signal is positioned at different angle ranges, controls and different control signal to described Proportional valve and comprise so that described Proportional valve increases or reduce oil pressure:
Calculate the corresponding mapping voltage U of current electric brake handle corner Vx y according to electric brake handle corner Vx with the mapping relations of mapping voltage U y;
The Uy calculated is carried out to the DA conversion, and the analog voltage after conversion is sent into Proportional valve for regulating oil pressure.
Realization in order to demonstrate the invention, described above-mentioned embodiment.But other variations of the present invention and modification, be apparent for those skilled in the art, any modification in essence disclosed in this invention and basic principle scope/variation or imitation conversion all belong to claim protection domain of the present invention.
Claims (8)
1. the dish system of stopping, it is characterized in that, comprise oil sources, Proportional valve, organize braking clamp cylinder and automatical control system more, described oil sources is connected with described many group braking clamp cylinders by described Proportional valve, in described many group braking clamp cylinders at least one group with described Proportional valve between be provided with corresponding switch valve, described Proportional valve and described switch valve are electrically connected to described automatical control system, and described automatical control system is for controlling the switch of described Proportional valve pressure regulation and the described switch valve of control.
2. the dish according to claim 1 system of stopping, is characterized in that, in described many group braking clamp cylinders at least one group with described Proportional valve between be provided with corresponding switch valve and specifically comprise:
One group in described many group braking clamp cylinders directly is communicated to described Proportional valve, and other groups in described many group braking clamp cylinders are communicated to described Proportional valve by each self-corresponding switch valve respectively.
3. the dish according to claim 1 system of stopping, is characterized in that, in every group of described braking clamp cylinder, the number of braking clamp cylinder is one or more.
4. the dish according to claim 1 system of stopping, it is characterized in that, described automatical control system comprises ECU (Electrical Control Unit) and electric brake handle, described Proportional valve and described switch valve are electrically connected to described ECU (Electrical Control Unit), described ECU (Electrical Control Unit) is electrically connected to described electric brake handle, described electric brake handle produces angular signal and exports described ECU (Electrical Control Unit) to according to rotational angle, described ECU (Electrical Control Unit) receives the angular signal from the electric brake handle, by IO mouth output switch valve control signal, by DA mouth export ratio valve control signal.
5. the dish according to claim 4 system of stopping, it is characterized in that, described ECU (Electrical Control Unit) is further used for: when the indicated corner of described angular signal is positioned at different angle ranges, control the switch of different switch valves or switch valve combination, and control and different control signal to described Proportional valve so that described Proportional valve increases or reduce oil pressure.
6. control the stop method of system of dish as claimed in claim 1 for one kind, it is characterized in that, comprising:
When the indicated corner of the angular signal of described electric brake handle is positioned at different angle ranges, control the switch of different switch valves or switch valve combination, and control and different control signal to described Proportional valve so that described Proportional valve increases or reduce oil pressure.
7. method according to claim 6, is characterized in that, described when the indicated corner of described angular signal is positioned at different angle ranges, and the switch of controlling different switch valves or switch valve combination comprises:
ECU (Electrical Control Unit), after the angular signal Vx of read electric brake lever, is carried out the judgement of pressure regulation direction;
If up pressure regulation direction, by Vx and up gear shift critical value V
uP.ncompare, on the contrary with descending gear shift critical value V
lW.ncompare, judge whether to need gear shift;
If judgement need to increase shelves, the output that current oil pressure reduced by half increases 1 grade simultaneously; If judgement need to lower category, current oil pressure is doubled to output, reduce by 1 grade simultaneously; If judgement without gear shift, makes oil pressure multiplication relation constant and do not do gear switch; Wherein, the switch valve that different gear correspondences is different or the switch of switch valve combination.
8. method according to claim 6, is characterized in that, when the indicated corner of described angular signal is positioned at different angle ranges, controls and different control signal to described Proportional valve and comprise so that described Proportional valve increases or reduce oil pressure:
Calculate the corresponding mapping voltage U of current electric brake handle corner Vx y according to electric brake handle corner Vx with the mapping relations of mapping voltage U y;
The Uy calculated is carried out to the DA conversion, and the analog voltage after conversion is sent into Proportional valve for regulating oil pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210173993.3A CN103453054B (en) | 2012-05-31 | 2012-05-31 | A kind of method of disc brake system and the control disc brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210173993.3A CN103453054B (en) | 2012-05-31 | 2012-05-31 | A kind of method of disc brake system and the control disc brake system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103453054A true CN103453054A (en) | 2013-12-18 |
| CN103453054B CN103453054B (en) | 2017-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210173993.3A Expired - Fee Related CN103453054B (en) | 2012-05-31 | 2012-05-31 | A kind of method of disc brake system and the control disc brake system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1163964A (en) * | 1996-04-30 | 1997-11-05 | 三星重工业株式会社 | Device and method for selecting oil pressure type building machinery operating mode |
| US5700067A (en) * | 1995-09-12 | 1997-12-23 | Fahrzeugtechnik Ebern Gmbh | Hydraulic braking system, especially for motor vehicles |
| CN2702039Y (en) * | 2004-05-11 | 2005-05-25 | 杭州创联电子技术有限公司 | Automatic bit feed device of disc brake |
| CN201448102U (en) * | 2009-06-05 | 2010-05-05 | 宝鸡石油机械有限责任公司 | Novel disk-brake automatic bit-feeding hydraulic port |
| CN201554443U (en) * | 2009-08-12 | 2010-08-18 | 普世科工业制动器(北京)有限公司 | Electric hydraulic control system for oil drilling rig hydraulic disc braking device |
-
2012
- 2012-05-31 CN CN201210173993.3A patent/CN103453054B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5700067A (en) * | 1995-09-12 | 1997-12-23 | Fahrzeugtechnik Ebern Gmbh | Hydraulic braking system, especially for motor vehicles |
| CN1163964A (en) * | 1996-04-30 | 1997-11-05 | 三星重工业株式会社 | Device and method for selecting oil pressure type building machinery operating mode |
| CN2702039Y (en) * | 2004-05-11 | 2005-05-25 | 杭州创联电子技术有限公司 | Automatic bit feed device of disc brake |
| CN201448102U (en) * | 2009-06-05 | 2010-05-05 | 宝鸡石油机械有限责任公司 | Novel disk-brake automatic bit-feeding hydraulic port |
| CN201554443U (en) * | 2009-08-12 | 2010-08-18 | 普世科工业制动器(北京)有限公司 | Electric hydraulic control system for oil drilling rig hydraulic disc braking device |
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| CN103453054B (en) | 2017-06-30 |
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Granted publication date: 20170630 Termination date: 20180531 |