CN101832348B - Wet multi-disc brake - Google Patents
Wet multi-disc brake Download PDFInfo
- Publication number
- CN101832348B CN101832348B CN2010101865886A CN201010186588A CN101832348B CN 101832348 B CN101832348 B CN 101832348B CN 2010101865886 A CN2010101865886 A CN 2010101865886A CN 201010186588 A CN201010186588 A CN 201010186588A CN 101832348 B CN101832348 B CN 101832348B
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- China
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- piston
- friction plate
- spline
- ring gear
- disc brake
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Abstract
The invention discloses a wet multi-disc brake, which relates to a vehicle braking device. The invention provides the wet multi-disc brake with simple structure, good work reliability, low production cost, convenient use and maintenance, good safety and capability of improving the vehicle braking reliability. The wet multi-disc brake is provided with a planet carrier, a dynamic friction plate, a static friction plate, an inner gear ring, a piston, an inner gear ring bracket and a return spring. The static friction plate is connected with the inner gear ring through a spline, the dynamic friction plate is connected with an outer spline at an protrusion at one end of the planet carrier through a spline, the dynamic friction plate and the static friction plate are spaced and have the same number, an outside spline of the inner gear ring bracket is connected with an inner spline of the inner gear ring, the inside of the inner gear ring bracket and the outside of the piston form a movable cylinder body of the piston together, and a sealing ring is arranged on the piston.
Description
Technical field
The present invention relates to a kind of Vehicular brake device, especially relate to a kind of wet multi-disc brake that can be applicable to comprise the multiple vehicle of industrial vehicle.
Background technique
At present; Mostly China's engineering machinery field brake type is to adopt caliper disc brake; Though it is stable that caliper disc brake has braking ability, to a certain extent can bearing temperature, the influence of water logging and the speed of a motor vehicle, advantage such as fade resistance is better; But general brake disc has only a slice, has shortcomings such as friction area is little, compressive load per unit area big, radiating condition is poor, be prone to ablate, working life is short.Along with the continuous development of construction machinery industry, also just increasingly high to the braking ability requirement, at home obtain more and more widely application by the wet disk type braker of the polydisc that takes the lead in adopting abroad in recent years.
Domestic wet multi-disc brake is to realize braking (like Chinese patent ZL200720311907.5) through the braking semiaxis mostly; But under the situation of meeting design requirement; In actual use; The situation of semiaxis fatigue fracture can take place in the braking semiaxis, and cause vehicles can't be braked and lead to a disaster, especially at operating mode complex engineering mechanical field comparatively.Because of fatigue ruption generally be abominable owing to operating mode, braking is frequent etc., and reason causes; Traditional solution generally is to increase the semiaxis diameter; Change the semiaxis material, change the semiaxis heat treatment process, but such method not only increases manufacturing cost; And it is also comparatively limited that fatigue stress increases scope, can not control this problem very effectively.
Summary of the invention
The object of the present invention is to provide a kind of simple in structurely, functional reliability is good, and cost of production is low, uses easy to maintenancely, and Security is good, can improve the wet multi-disc brake of car brakeing reliability.
The present invention is provided with planetary wheel carrier, movable friction plate, static friction sheet, ring gear, piston, ring gear support and return spring.
The static friction sheet is connected with ring gear through spline; Movable friction plate is connected with planetary wheel carrier one end high spot external splines through spline; Movable friction plate is alternate with the static friction sheet to be separated and quantity equates; Ring gear support outside spline is connected with the ring gear internal spline, and the movable cylinder body of piston is formed in the inboard of ring gear support and the outside of piston jointly, and seal ring is set on piston.
Preferably be uniformly distributed with 3～4 planet wheels on the said planetary wheel carrier; The planetary wheel carrier one end high spot outside is processed with one section spline; Be used to install movable friction plate; The large end face of spline bottom is processed into smooth flat, is used to bear the positive pressure that produces when braking, and the perpendicularity and the machining accuracy of higher level degree and relative central shaft should be arranged.
Said return spring is preferably established at least 2 groups, and uniformly at intervals on the piston circumferencial direction.
The present invention can reach following beneficial effect:
Planetary wheel carrier structure of the present invention when simplifying the traditional design structure, is strengthened planetary wheel carrier intensity.Under identical load, planetary wheel carrier can obtain very big Torsion Section coefficient, has reduced shearing stress significantly, effectively reduces the general impulsive load of passing through braking semiaxis abrupt deceleration vehicle to semiaxis, reduces the possibility of semiaxis fatigue fracture.Even semiaxis ruptures, also can realize safety brake through the braking planetary wheel carrier under extreme operating condition.Manufacturing of the present invention is simple, bearing capacity is strong, easy to maintenance, braking is efficient, Safety performance is good.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the planetary wheel carrier structural representation of the embodiment of the invention.
Embodiment
Referring to Fig. 1 and 2, the embodiment of the invention is provided with bolt washer 1, pad 2, back-up ring 3, needle roller 4, planetary wheel carrier 5, movable friction plate 6, static friction sheet 7, ring gear 8, pad 9, piston 10, screw 11, back shaft 12, hub 13, ring gear support 14, return spring 15, seal ring 16, round nut 17, sun gear 18, semiaxis 19, planet wheel 20 etc.
Be uniformly distributed with 3～4 planet wheels on the said planetary wheel carrier 5; The planetary wheel carrier 5 one end high spots outside is processed with one section spline; Be used to install movable friction plate 6; The large end face of spline bottom is processed into smooth flat, is used to bear the positive pressure that produces when braking, and the perpendicularity and the machining accuracy of higher level degree and relative central shaft should be arranged.
Said return spring 15 is established at least 2 groups, and uniformly at intervals on piston 10 circumferencial directions.
Said ring gear support 14 is connected through round nut 17 and back shaft 12, and with a plurality of screws that are uniformly distributed with that round nut is locked on supporting axle on the round nut, guarantees being fixedly connected of ring gear support and supporting axle.
The internal tooth engagement of the external tooth of said ring gear support 14 and ring gear 8; And the left side of ring gear support 14 profiles of tooth cooperates with the ladder surface of ring gear 8 internal tooths; The degrees of freedom that restriction ring gear 8 moves right vertically; And the spacing collar of ring gear support 14 usefulness snaps in the groove of ring gear 8, and ring gear support 14 is completely fixed in the ladder surface and groove of ring gear 8, has limited the axial move left and right of ring gear fully.
Semiaxis 19 is connected with sun gear 18, sun gear 18 and planet wheel 20 engagements, and mesh with relative back shaft 12 static ring gears 8 in planet wheel 20 outsides, and planet wheel is when accomplishing rotation, by the revolution output torque and the motion of planetary wheel carrier 5; Planetary wheel carrier 5 is connected through bolt 1 and hub 13, and power drives sun gear 18 through semiaxis, drives hub 13 output torques through planet wheel 20 and planetary wheel carrier 5 then, realizes the transmission of power of vehicle;
Said semiaxis 19 is connected with sun gear 18 through spline.
The engagement of the internal tooth of the external tooth of static friction sheet 7 and ring gear 8, the internal tooth of movable friction plate 6 is connected with the external tooth of planetary wheel carrier 5, movable friction plate 6 and static friction sheet 7 be alternate separate and quantity equal; During initial the installation, leave the gap between dyanainic friction sheet 6 and the static friction sheet 7, can not produce friction torque during cruising.
The cylinder body of piston 10 activities is formed in back shaft 12 static ring gear support 14 outsides inboard and piston 10 jointly relatively, and is tightly connected with seal ring 16.When vehicle need be braked, promote piston 10 axial motion laterally through hydraulic oil, static friction sheet 7 and movable friction plate 6 are pressed together, and compress planetary wheel carrier 5, the many dish rub sheet produces friction catch moment braking planetary wheel carrier 5, realizes braking;
Behind the removal oil pressure, hydraulic oil through the oil circuit on the supporting axle, is back to fuel tank again; Positive pressure between the dynamic and static friction plate also disappears thereupon, connects the pulling force that the return spring 15 between piston 10 and the ring gear support 14 produces, and piston 10 is retracted original position, has eliminated the frictional force between dynamic and static friction plate, the brake off state.
Claims (2)
1. wet multi-disc brake is characterized in that being provided with planetary wheel carrier, movable friction plate, static friction sheet, ring gear, piston, ring gear support and return spring;
The static friction sheet is connected with ring gear through spline; Movable friction plate is connected with planetary wheel carrier one end high spot external splines through spline; Movable friction plate is alternate with the static friction sheet to be separated and quantity equates; Ring gear support outside spline is connected with the ring gear internal spline, and the movable cylinder body of piston is formed in the inboard of ring gear support and the outside of piston jointly, and seal ring is set on piston;
Be uniformly distributed with 3～4 planet wheels on the said planetary wheel carrier.
2. wet multi-disc brake as claimed in claim 1 is characterized in that said return spring establishes at least 2 groups, and uniformly at intervals on the piston circumferencial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101865886A CN101832348B (en) | 2010-05-26 | 2010-05-26 | Wet multi-disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101865886A CN101832348B (en) | 2010-05-26 | 2010-05-26 | Wet multi-disc brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101832348A CN101832348A (en) | 2010-09-15 |
| CN101832348B true CN101832348B (en) | 2012-02-15 |
Family
ID=42716517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101865886A Expired - Fee Related CN101832348B (en) | 2010-05-26 | 2010-05-26 | Wet multi-disc brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101832348B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019111526A1 (en) * | 2019-05-03 | 2020-11-05 | Schaeffler Technologies AG & Co. KG | Multi-disc brake device and gear arrangement with the multi-disc brake device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3039567A (en) * | 1959-11-23 | 1962-06-19 | Gen Motors Corp | Fluid cooled brake |
| US4450735A (en) * | 1982-02-26 | 1984-05-29 | General Motors Corporation | Planetary transmission with a spring applied centrifugally sensitive clutch |
| US4655326A (en) * | 1985-11-29 | 1987-04-07 | Dana Corporation | Cooling system for planetary wheel end with wet brake |
| FR2621089A1 (en) * | 1987-09-28 | 1989-03-31 | Magyar Vagon Es Gepgyar | MULTI-DISK WET BRAKE, OF LOW SIZE, MOUNTED IN THE WHEEL HUB OF EPICYCLOIDAL BEARING MECHANISMS |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201671987U (en) * | 2010-05-26 | 2010-12-15 | 厦门大学 | Wet type multi-disc brake |
-
2010
- 2010-05-26 CN CN2010101865886A patent/CN101832348B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3039567A (en) * | 1959-11-23 | 1962-06-19 | Gen Motors Corp | Fluid cooled brake |
| US4450735A (en) * | 1982-02-26 | 1984-05-29 | General Motors Corporation | Planetary transmission with a spring applied centrifugally sensitive clutch |
| US4655326A (en) * | 1985-11-29 | 1987-04-07 | Dana Corporation | Cooling system for planetary wheel end with wet brake |
| FR2621089A1 (en) * | 1987-09-28 | 1989-03-31 | Magyar Vagon Es Gepgyar | MULTI-DISK WET BRAKE, OF LOW SIZE, MOUNTED IN THE WHEEL HUB OF EPICYCLOIDAL BEARING MECHANISMS |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101832348A (en) | 2010-09-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120215 Termination date: 20170526 |