CN201671987U - Wet type multi-disc brake - Google Patents
Wet type multi-disc brake Download PDFInfo
- Publication number
- CN201671987U CN201671987U CN2010202084973U CN201020208497U CN201671987U CN 201671987 U CN201671987 U CN 201671987U CN 2010202084973 U CN2010202084973 U CN 2010202084973U CN 201020208497 U CN201020208497 U CN 201020208497U CN 201671987 U CN201671987 U CN 201671987U
- Authority
- CN
- China
- Prior art keywords
- piston
- ring gear
- disc brake
- friction discs
- wheel carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a wet type multi-disc brake, which relates to an automobile brake. The wet type multi-disc brake has the advantages of simple structure, high operation reliability, low production cost, convenient use and maintenance and high safety, and can enhance the reliability of automobile braking. The wet type multi-disc brake comprises a planet carrier, movable friction discs, static friction discs, an annular gear, a piston, an annular gear support and a restoring spring. The static friction discs are connected with the annular gear through splines, the movable friction discs are connected with external splines on one projected end of the planet carrier through splines, the movable friction discs and the static friction discs are arranged alternately, the number of the movable friction discs is equal to the number of the static friction discs, splines on the outer side of the annular gear support are connected with splines on the inner side of the annular gear, the inner side of the annular gear support and the outer side of the piston are jointly formed into a cylinder body in which the piston can move, and the piston is provided with a sealing ring.
Description
Technical field
The utility model relates to a kind of Vehicular brake device, especially relates 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, advantages 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, easily ablate, working life is short.Along with the continuous development of construction machinery industry, braking ability is required also just more and more higher, 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 (as Chinese patent ZL200720311907.5) by 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 vehicle to brake 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
It is a kind of simple in structure that the purpose of this utility model is to provide, and 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 utility model 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 by 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, the outside mutual group of the inboard of ring gear support and piston becomes the cylinder body of piston activity, and seal ring is set on piston.
Described return spring is preferably established at least 2 groups, and uniformly at intervals on the piston circumferencial direction.
The utility model can reach following beneficial effect:
Planetary wheel carrier structure of the present utility model 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 by the braking planetary wheel carrier under extreme operating condition.Manufacturing of the present utility model is simple, bearing capacity is strong, easy to maintenance, braking is efficient, Safety performance is good.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Fig. 2 is the utility model embodiment's a planetary wheel carrier structural representation.
Embodiment
Referring to Fig. 1 and 2, the utility model embodiment 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.
Described return spring 15 is established at least 2 groups, and uniformly at intervals on piston 10 circumferencial directions.
Described ring gear support 14 is connected by round nut 17 and back shaft 12, and with uniform a plurality of screws that round nut is locked on supporting axle on the round nut, guarantees fixedlying connected of ring gear support and supporting axle.
The internal tooth engagement of the external tooth of described 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, 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.
Described semiaxis 19 is connected with sun gear 18 by 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.
Back shaft 12 static ring gear support 14 inboards become the cylinder bodies of piston 10 activities with the outside mutual group of piston 10 relatively, and are tightly connected with seal ring 16.When vehicle need be braked, promote piston 10 axial motion laterally by 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 by 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 (4)
1. a 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 by 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, the outside mutual group of the inboard of ring gear support and piston becomes the cylinder body of piston activity, and seal ring is set on piston.
2. a kind of wet multi-disc brake as claimed in claim 1 is characterized in that uniform 3～4 planet wheels on the described planetary wheel carrier.
3. a kind of wet multi-disc brake as claimed in claim 1 or 2 is characterized in that the described planetary wheel carrier one end high spot outside is processed with one section spline.
4. a kind of wet multi-disc brake as claimed in claim 1 is characterized in that described 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 |
|---|---|---|---|
| CN2010202084973U CN201671987U (en) | 2010-05-26 | 2010-05-26 | Wet type multi-disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202084973U CN201671987U (en) | 2010-05-26 | 2010-05-26 | Wet type multi-disc brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201671987U true CN201671987U (en) | 2010-12-15 |
Family
ID=43329399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202084973U Expired - Lifetime CN201671987U (en) | 2010-05-26 | 2010-05-26 | Wet type multi-disc brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201671987U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832348A (en) * | 2010-05-26 | 2010-09-15 | 厦门大学 | Wet multi-disc brake |
| CN103007448A (en) * | 2012-12-13 | 2013-04-03 | 陈海 | High-altitude rescue escape sling |
-
2010
- 2010-05-26 CN CN2010202084973U patent/CN201671987U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832348A (en) * | 2010-05-26 | 2010-09-15 | 厦门大学 | Wet multi-disc brake |
| CN103007448A (en) * | 2012-12-13 | 2013-04-03 | 陈海 | High-altitude rescue escape sling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101215 Effective date of abandoning: 20120502 |