CN202011388U - Hydraulic auxiliary release type brake system - Google Patents
Hydraulic auxiliary release type brake system Download PDFInfo
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- CN202011388U CN202011388U CN2010206909636U CN201020690963U CN202011388U CN 202011388 U CN202011388 U CN 202011388U CN 2010206909636 U CN2010206909636 U CN 2010206909636U CN 201020690963 U CN201020690963 U CN 201020690963U CN 202011388 U CN202011388 U CN 202011388U
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Abstract
Provided is a hydraulic auxiliary release type brake system including a prefill valve, a brake pump, a brake, a foot braking valve, and a first accumulator. The brake comprises a piston casing, an O-shaped sealing ring, a screw plug, a piston, a Glyd ring, a friction plate, a fixed disc, and a spline disc, the brake system further includes a hydraulic auxiliary releasing system which comprises a fixed value pressure-reducing valve, a second accumulator and an overflow valve. The brake system provided is additionally provided with a hydraulic auxiliary releasing system of the brake to solve the problem that the hydraulic brake system results in the wearing on the brake when the return spring cannot completely return; The brake provided solves the problem that the brake piston sealing ring is failed due to the wheel hub bearing gap and improves the service lifetime of the brake and the reliability of braking by adopting the two-section piston casing structure.
Description
Technical field
The utility model relates to the brake system of the auxiliary release type of a kind of hydraulic pressure.
Background technology
The quality of brake system performance directly has influence on the performance of car load.The sealing wet multi-disc brake has that lock torque is big, safe, good stability, long service life and system heat resistanceheat resistant decline and advantages such as contamination resistance is strong, non-maintaining, has obtained application widely in the scoper brake system.Early 1980s, most of shoe type or the plate disc brake of using of external scoper to late 1980s, nearly all adopts the sealing wet multi-disc brake.Domesticly also begin to seal the research of wet multi-disc brake the eighties in 20th century, domestic scoper all adopts the sealing wet multi-disc brake at present.
The sealing wet multi-disc brake has four kinds of structures, i.e. semiaxis drg, planet drg, liquid-cooled brake, brake application by spring liquid-cooled brake.First three is planted and is hydraulic braking, spring release and brake application by spring working forms; The 4th kind is that brake application by spring, hydraulic pressure discharge working forms.Semiaxis drg and planet drg simple and compact for structure, lock torque is little, long service life, and do not need independently lubricated and cooling system, be widely used in small-sized scoper.Liquid-cooled brake is with respect to the above two, and lock torque is bigger, is applicable to big-and-middle-sized scoper.The brake application by spring liquid-cooled brake is the safety-type drg that grows up for 20 end of the centurys, has independently cooling system, is convenient to general layout, is mainly used in big-and-middle-sized scoper.
Hydraulic braking, spring release type working of brakes principle are: when brake plunger was connected hydraulic oil, oil liquid pressure promoted piston, and then compressed dynamic and static friction lining generation friction force, and the friction resistance moment that is produced makes wheel braking; When the release of plunger shaft hydraulic oil, pull back spring is piston reset, thereby dynamic and static friction lining is separated, and friction resistance moment disappears, brake off.When misoperation or when frequently using drg, the temperature rise meeting of drg obviously increases, and causes brake efficiency to descend, even loses efficacy.In addition, because the overheated tempering of spring, elastic force descends, and during breakaway detents, pull back spring can not reset fully, and this will aggravate friction disc wear again, and temperature rise further raises, and forms vicious circle, finally causes braking entirely ineffective.
At present, hydraulic braking, spring release type brake plunger have two kinds of structure types, and first piston and platen are the split structure, and it two is that piston and platen are one-piece construction.The former adopts lattice to enclose sealing, and quality is good, but the technological requirement height, manufacturing cost is also high; The latter adopts the sealing of Y+O circle, and technological requirement is low, and airtight quality is not good enough.The drg of domestic production mainly adopts the piston and the platen of one-piece construction, and its outstanding problem is that the O seal ring in the Y+O seal ring can be overflowed from the Y seal ring.The reason that causes this phenomenon is that the hub bearing gap is bigger than normal, and the wheel hub band friction lining and done circle swing, and brake plunger is swing thereupon also.The amplitude of swing is little near the part amplitude of friction lining, and the part amplitude far away apart from friction lining is big.This swing that goes round and begins again has caused a kind of " rolling " to the Y+O circle of far-end, and consequently the O seal ring of far-end is overflowed, and the distortion of Y seal ring causes seal failure.
Summary of the invention
The purpose of this utility model provides the brake system of the auxiliary release type of a kind of hydraulic pressure, it can solve hydraulic braking, spring release type Enclosed Multi-Disk Wet Brake spring overheating failure and return problem fully, also solved simultaneously interior leakage of brake-piston seal of one-piece piston and platen structure, the floating seal problem that leaks outside has improved the service life and the braking reliability of drg.
For this reason, the utility model provides the brake system of the auxiliary release type of a kind of hydraulic pressure, described brake system comprises prefill valve, brake pump, drg, foot brake valve and first energy storage, described drg comprises piston shell, O RunddichtringO, plug screw, piston, Ge Laiquan, friction lining, reaction plate and flower keyboard, described brake system comprises that also hydraulic pressure assists delivery system, and the auxiliary delivery system of this hydraulic pressure comprises fixed pressure reducing valve, second energy storage and by pass valve; The oil inlet of described fixed pressure reducing valve links to each other with first energy storage of brake system, the oil outlet of fixed pressure reducing valve is connected to second energy storage, the oil outlet of second energy storage is connected to the adaptor union of three interfaces, one end of the oil outlet of this adaptor union discharges oil pocket with the braking of drg and links to each other, and the other end links to each other with by pass valve; The piston shell of described drg and flower keyboard form a cavity, and piston, friction lining and reaction plate are installed in the described cavity, and described reaction plate is connected with flower keyboard, and described friction lining is connected with reaction plate.
Preferably, described drg is hydraulic braking, spring release type Enclosed Multi-Disk Wet Brake.
Preferably, the piston shell of described drg adopts the two sectional type structure.
Preferably, two boss are arranged on the described piston, and form three sealing surfaces between the inside face of described piston shell, form two oil closed cavities, the oil pocket that active area is bigger links to each other with first energy storage, and the less oil pocket of active area links to each other with second energy storage.
Preferably, described brake plunger, friction lining and reaction plate are integrated.
Preferably, be hermetically-sealed construction between described brake plunger and the piston shell.
In the utility model, the effect of the fixed pressure reducing valve in the auxiliary delivery system of hydraulic pressure is to keep the certain pressure of second energy storage; The effect of second energy storage is to keep brake plunger oil pocket pressure, reduces the operating frequency of fixed pressure reducing valve; The effect of by pass valve is to guarantee that brake plunger oil pocket pressure is not higher than design value.When carrying out braking maneuver, brake plunger oil pocket volume reduces, and oil pressure raises, and surplus oil liquid at first enters second energy storage, and when pressure was elevated to the by pass valve response pressure, by pass valve was opened, and makes brake plunger oil pocket oil pressure be no more than setting value; When carrying out the braking release movement, the hydraulic oil of storing in second energy storage enters the brake plunger oil pocket, and when second energy storage pressure was reduced to the fixed pressure reducing valve response pressure, fixed pressure reducing valve was opened, and makes the pressure of second energy storage be not less than setting value.
In the utility model, the brake plunger shell adopts the two sectional type structure, three sealing surfaces are arranged between its piston shell inside face and the outer surface of piston, set up two seal oil chambers therefrom, active area bigger oil pocket in left side directly links to each other with brake system first energy storage, and active area less oil pocket in right side links to each other with second energy storage of the auxiliary delivery system of hydraulic pressure of brake system.The left side oil pocket communicates with first energy storage at the drg glancing impact, communicates with fuel tank when braking is removed; The right side oil pocket is all kept certain pressure when braking and non-braking mode, its effect is to promote piston to move to left when braking is removed, and drg also can reset fully when making the spring fault.
The utility model has solved hydraulic braking, spring release type Enclosed Multi-Disk Wet Brake spring overheating failure and return problem fully, drg also can be resetted when the pull back spring fault fully, heating and the wearing and tearing of drg have been avoided, the service life of having improved drg because of not resetting fully and causing.
Drg of the present utility model adopts the two-part piston shell structure, and three lattice enclose sealing, have solved the brake-piston seal circle because of the Problem of Failure that the hub bearing gap causes, have improved the reliability of drg.
Description of drawings
Fig. 1 is the hydraulic system principle figure according to the brake system of the auxiliary release type of hydraulic pressure of the present utility model.
Fig. 2 is the brake structural scheme drawing of the brake system of the auxiliary release type of hydraulic pressure as described in Figure 1.
Fig. 3 is the partial enlarged drawing of brake inside structure as described in Figure 2.
The specific embodiment
Below in conjunction with the specific embodiment, further set forth the utility model.
The vital parts of representing among the accompanying drawing 1-3 has: comprise prefill valve 1, high pressure filter 2, brake pump 3, intake oil filter 4, fuel tank 5, oil return fil 6, electromagnetic valve 7, by pass valve 8, drg 9, foot brake valve 10, second energy storage 11, fixed pressure reducing valve 12, check valve 13, shuttle valve 14, first energy storage 15, piston shell 91 and 94, O RunddichtringO 92, piston 93, piston 95, lattice enclose 96, friction lining 97, reaction plate 98, flower keyboard 99, oil pocket A and B that piston and piston shell form.
See also shown in Fig. 1-3, the brake system of the auxiliary release type of hydraulic pressure, this system comprise hydraulic brake system, the auxiliary delivery system of hydraulic pressure and hydraulic braking, spring release type Enclosed Multi-Disk Wet Brake.Hydraulic brake system comprises prefill valve 1, high pressure filter 2, brake pump 3, intake oil filter 4, fuel tank 5, oil return fil 6, electromagnetic valve 7, drg 9, foot brake valve 10, check valve 13, shuttle valve 14, first energy storage 15 and the pipeline parts; The auxiliary delivery system of hydraulic pressure comprises fixed pressure reducing valve 12, second energy storage 11, by pass valve 8 and pipeline parts; Drg 9 comprises that piston shell 91 and 94, O RunddichtringO 92, plug screw 93, piston 95, lattice enclose 96, friction lining 97, reaction plate 98, flower keyboard 99.
The oil inlet of the fixed pressure reducing valve 12 of the auxiliary delivery system of hydraulic pressure links to each other with hydraulic brake system first energy storage 15, the oil outlet of fixed pressure reducing valve 12 is connected to second energy storage 11, the oil outlet of second energy storage 11 is connected to the adaptor union of three interfaces, one end of the oil outlet of this adaptor union discharges oil pocket B with the braking of drg 9 and links to each other, and the other end links to each other with by pass valve 8.
The brake plunger shell adopts the two sectional type structure, comprise piston shell 91 and 94, two boss are arranged on the piston 95, form three sealing surfaces between piston 95 and the brake plunger shell inside face, form two oil closed cavity A and B thus, the oil pocket A that wherein active area is bigger is the braking oil pocket, and the less oil pocket B of another active area discharges oil pocket for braking.
Glancing impact, the A oil pocket communicates with first energy storage 15, and the hydraulic oil of this oil pocket A compresses brake bush 7 and reaction plate 8 to pressure and the spring force that the thrust of piston overcomes the hydraulic oil of oil pocket B; When braking discharged, the oil of A oil pocket took back oil rectifier 6 and communicates with fuel tank, the realization release, and friction lining 7 and reaction plate 8 separate under the effect of the pressure of the hydraulic oil of B oil pocket and spring force.When spring during because of overheated can not resetting fully, friction lining 7 also can thoroughly separate under the effect of the pressure of the hydraulic oil of B oil pocket with reaction plate 8.
The utility model is by the auxiliary delivery system of the hydraulic pressure that increases drg, and the drg that has solved hydraulic brake system is when pull back spring can not reset fully and cause the problem of brake wear; Drg of the present utility model has solved the brake-piston seal circle because of the Problem of Failure that the hub bearing gap causes by adopting the two-part piston shell structure, has improved the service life and the braking reliability of drg.
Claims (6)
1. the brake system of the auxiliary release type of a hydraulic pressure, described brake system comprises prefill valve (1), brake pump (3), drg (9), foot brake valve (10) and first energy storage (15), described drg (9) comprises piston shell, O RunddichtringO, plug screw, piston, Ge Laiquan, friction lining, reaction plate and flower keyboard, it is characterized in that:
Described brake system comprises that also hydraulic pressure assists delivery system, and the auxiliary delivery system of this hydraulic pressure comprises fixed pressure reducing valve (12), second energy storage (11) and by pass valve (8);
The oil inlet of described fixed pressure reducing valve (12) links to each other with first energy storage (15) of brake system, the oil outlet of fixed pressure reducing valve (12) is connected to second energy storage (11), the oil outlet of second energy storage (11) is connected to the adaptor union of three interfaces, one end of the oil outlet of this adaptor union discharges oil pocket (B) with the braking of drg (9) and links to each other, and the other end links to each other with by pass valve (8);
The piston shell of described drg (9) and flower keyboard form a cavity, and piston, friction lining and reaction plate are installed in the described cavity, and described reaction plate is connected with flower keyboard, and described friction lining is connected with reaction plate.
2. the brake system of the auxiliary release type of hydraulic pressure according to claim 1, it is characterized in that: described drg is hydraulic braking, spring release type Enclosed Multi-Disk Wet Brake.
3. the brake system of the auxiliary release type of hydraulic pressure according to claim 1 is characterized in that: the piston shell of described drg adopts the two sectional type structure.
4. the brake system of the auxiliary release type of hydraulic pressure according to claim 1, it is characterized in that: two boss are arranged on the described piston, and form three sealing surfaces between the inside face of described piston shell, form two oil closed cavities, the oil pocket that active area is bigger links to each other with first energy storage (15), and the less oil pocket of active area links to each other with second energy storage (11).
5. the brake system of the auxiliary release type of hydraulic pressure according to claim 1, it is characterized in that: described brake plunger, friction lining and reaction plate are integrated.
6. the brake system of the auxiliary release type of hydraulic pressure according to claim 1 is characterized in that: be hermetically-sealed construction between described brake plunger and the piston shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206909636U CN202011388U (en) | 2010-12-30 | 2010-12-30 | Hydraulic auxiliary release type brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206909636U CN202011388U (en) | 2010-12-30 | 2010-12-30 | Hydraulic auxiliary release type brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202011388U true CN202011388U (en) | 2011-10-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206909636U Expired - Fee Related CN202011388U (en) | 2010-12-30 | 2010-12-30 | Hydraulic auxiliary release type brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202011388U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144624A (en) * | 2013-03-11 | 2013-06-12 | 西安航空制动科技有限公司 | Brake control valve of airplane |
| CN103786709A (en) * | 2014-01-24 | 2014-05-14 | 中国北方车辆研究所 | Return pressure rise protective valve of emergency pump source oil tank in hydraulic braking system |
| CN108533645A (en) * | 2017-03-06 | 2018-09-14 | 豪力辉工业股份有限公司 | Hydraulic brake device of turning and milling head |
| CN109878483A (en) * | 2019-03-14 | 2019-06-14 | 嘉兴市钧萍轨道交通科技有限公司 | A kind of rail traffic vehicles auxiliary relief device and brake fluid system |
-
2010
- 2010-12-30 CN CN2010206909636U patent/CN202011388U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144624A (en) * | 2013-03-11 | 2013-06-12 | 西安航空制动科技有限公司 | Brake control valve of airplane |
| CN103144624B (en) * | 2013-03-11 | 2015-05-13 | 西安航空制动科技有限公司 | Brake control valve of airplane |
| CN103786709A (en) * | 2014-01-24 | 2014-05-14 | 中国北方车辆研究所 | Return pressure rise protective valve of emergency pump source oil tank in hydraulic braking system |
| CN103786709B (en) * | 2014-01-24 | 2016-03-16 | 中国北方车辆研究所 | A kind of hydraulic brake system is met an urgent need pumping source tank drainback voltage rise protective valve |
| CN108533645A (en) * | 2017-03-06 | 2018-09-14 | 豪力辉工业股份有限公司 | Hydraulic brake device of turning and milling head |
| CN109878483A (en) * | 2019-03-14 | 2019-06-14 | 嘉兴市钧萍轨道交通科技有限公司 | A kind of rail traffic vehicles auxiliary relief device and brake fluid system |
| CN109878483B (en) * | 2019-03-14 | 2020-06-19 | 嘉兴市钧萍轨道交通科技有限公司 | Auxiliary relieving device for rail transit vehicle and hydraulic braking system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111019 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |