CN203548915U - Sealing device for hydraulic retarder - Google Patents
Sealing device for hydraulic retarder Download PDFInfo
- Publication number
- CN203548915U CN203548915U CN201320366654.7U CN201320366654U CN203548915U CN 203548915 U CN203548915 U CN 203548915U CN 201320366654 U CN201320366654 U CN 201320366654U CN 203548915 U CN203548915 U CN 203548915U
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- China
- Prior art keywords
- oil sealing
- ring
- pressure
- active chamber
- hydrodynamic retarder
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Abstract
The utility model provides a sealing device for a hydraulic retarder. The sealing device comprises a shaft and a work cavity, wherein an oil seal is arranged outside a connecting part between the shaft and the work cavity; a decompressing ring is further arranged between the shaft and the work cavity; outside the oil seal is provided an oil seal protective ring; the oil seal protective ring is an annular metal spacer; and one surface stuck with the oil seal protective ring is provided with an annular protrusion abutted against an oil seal lip. Sealing effect can be improved by the use of the sealing device for hydraulic retarder.
Description
Technical field:
The utility model relates to auto parts machinery field, is specifically a kind of hydrodynamic retarder seal arrangement for sealing between rotor shaft and hydrodynamic retarder active chamber.
Background technique:
Hydrodynamic retarder claims again fluid power speed reducer.Automobile uses exhaust brake when lower long slope, although can receive good braking effect, for the larger heavy vehicle of tonnage, as commercial vehicle and military vehicle, it is limited adopting exhaust brake effect.Even, in climb and fall section, mountain area, can cause heavy-duty vehicle break Braking efficiency lower because of frequent braking, even cause the generation of traffic accident.Therefore, the heavy vehicle such as cargo truck, military vehicle all needs to install fluid power deceleration retarder.
Hydrodynamic retarder is the principle that adopts fluid power, it comprises active chamber, shoe cream room and cooler, a pair of stator and rotor seal are in active chamber, rotor and the interlock of automobile power axle, on rotor and stator, be equipped with blade, active chamber is communicated with shoe cream room, when needs are braked, control gear provides signal, by solenoid valve, in shoe cream room, be filled with pressurized air, hydraulic oil in shoe cream room flows into active chamber, rotor banding hydrodynamic force feed is moved along direction blade, and get rid of to stator, stator vane produces reaction to hydraulic oil, hydraulic oil outflow stator turns over impact rotor again, so just formed the resisting moment to rotor, obstruction rotor rotates, thereby realize the decelerating effect to vehicle.
This hydrodynamic retarder rotor shaft will be connected with automobile power axle through active chamber, for preventing hydraulic fluid leak, therefore in the joint of rotor shaft and active chamber, oil sealing to be set and prevent hydraulic fluid leak, but oil sealing to bear pressure limited, sometimes still have a small amount of oil and leak, and due to oil sealing to bear pressure limited, while therefore working, the pressure of hydraulic oil can not design excessive, otherwise easily damage, sealing effect is poor.
Model utility content:
The utility model solve technical problem be, overcome existing technological deficiency, a kind of hydrodynamic retarder seal arrangement that can improve sealing effect is provided.
The technological scheme that the utility model provides is: the utility model provides a kind of hydrodynamic retarder seal arrangement; it comprises axle and active chamber wall; the outside of described axle and active chamber wall joint is provided with oil sealing; between described axle and active chamber wall, be also provided with pressure-reducing ring; the outside of described oil sealing is provided with oil sealing guard ring; described oil sealing guard ring is a metal annular gasket, and the one side that described oil sealing guard ring is pasting oil sealing is provided with the annular protrusion for propping up oil seal lip.
Described pressure-reducing ring is a ring washer, on described packing ring, a place disconnects and forms a breach, the two ends of described disconnection, and wherein the end face of one end is established a rectangular recess, the end face of the other end is provided with the rectangular preiection matching with this groove, and the width of described rectangular recess equates with the width of described rectangular preiection.Adopt this pressure-reducing ring, breach on pressure-reducing ring is made as to a rectangular preiection and a form that rectangular recess coordinates, two wall laminatings of the both sides of projection and groove, like this, even if pressure-reducing ring in use weares and teares, it is large that breach spreading becomes, still some is to fit with two inwalls of groove to projection, still can stop oil to flow to low voltage side from high pressure side, and effect of easing stress is better, can be along with wearing and tearing variation, the life-span is longer.
The dimension scale of the length of described rectangular preiection and the thickness of packing ring is 2:1～5:1.Adopt this structure, even if pressure-reducing ring wearing and tearing are too much, it is large that breach becomes, and still still fit with two inwalls of groove in the both sides of projection, so still can stop on high-tension side oil to flow out from indentation, there, and effect of easing stress is better.
The utlity model has following advantage:
Adopt the utility model to establish pressure-reducing ring between axle and active chamber wall, space between oil sealing and active chamber wall is low pressure area, active chamber is zone of high pressure, if pressure-reducing ring can stop the high pressure liquid force feed in active chamber to flow between oil sealing and active chamber wall, thereby make the oil pressure in the space between oil sealing and active chamber wall lower, make oil sealing need not bear larger oil pressure, but also in the outside of oil sealing, set up an oil sealing guard ring, be close to oil sealing outside, and on oil sealing guard ring, be also provided with convex annular and get up to prop up the lip of oil sealing, prevent that oil pressure from crossing ambassador's lip and opening, increased the voltage endurance capability of oil sealing, and oil sealing is not easy to damage.Thereby greatly improved the sealability of hydrodynamic retarder seal arrangement.
Accompanying drawing explanation:
Accompanying drawing 1 is the structural representation of a kind of hydrodynamic retarder seal arrangement of the utility model;
The structural representation that accompanying drawing 3 is pressure-reducing ring;
The cross-sectional schematic that accompanying drawing 4 is pressure-reducing ring;
As shown in the figure: 1, axle, 2, active chamber, 3, active chamber wall, 4 pressure-reducing rings, 4.1, breach, 4.2, rectangular recess, 4.3, rectangular preiection, 5, oil sealing guard ring, 5.1, annular protrusion, 6, oil sealing, 7, skeleton, 8, low pressure area.
Embodiment:
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated:
As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4: the utility model provides a kind of hydrodynamic retarder seal arrangement, it comprises axle 1 and active chamber wall 3, described axle 1 is provided with oil sealing 6 with the outside of active chamber wall 3 joints, space between described oil sealing 6 and active chamber wall 3 is low pressure area 8, active chamber 3 inner sides are active chamber 2, active chamber 2 is zone of high pressure when work, between described axle 1 and active chamber wall 3, be also provided with pressure-reducing ring 4, can stop hydraulic oil to flow to low pressure area from zone of high pressure, thereby make low pressure area oil pressure lower, oil sealing 6 bears pressure also can be lower, but in order to make the resisting moment of hydrodynamic retarder itself obtain larger raising, therefore in active chamber, oil pressure can be very high, even if therefore low pressure area oil pressure is lower, also may exceed the tolerance range of oil sealing 6, therefore also exist, the outside of oil sealing 6 is provided with oil sealing guard ring 5 and protects oil sealing 6, described oil sealing guard ring 5 is a metal annular gasket, the one side that described oil sealing guard ring 5 is pasting oil sealing 6 is provided with the annular protrusion 5.1 for propping up oil sealing 6 lips.The inside of described oil sealing 6 is also provided with endless metal skeleton 7 and strengthens the intensity of oil sealing 6.Due to the sealability of hydrodynamic retarder seal arrangement greatly, therefore the oil pressure in active chamber can design higher, thereby mention the resisting moment of hydrodynamic retarder, the braking effect while improving hydrodynamic retarder brake.
Described annular protrusion 5.1 is perpendicular to the plane at oil sealing guard ring 5 places.
Acting as of described pressure-reducing ring 4 stops hydraulic oil to flow to low pressure area 8 from active chamber (zone of high pressure) 2, therefore can adopt the structures such as pad, packing ring to block the gap between axle 1 and active chamber wall 3.
Described pressure-reducing ring 4 is a ring washer, on described packing ring, a place disconnects and forms a breach 4.1, the two ends of described disconnection, wherein the end face of one end is established a rectangular recess 4.2, the end face of the other end is provided with the rectangular preiection 4.3 matching with this groove 4.2, and the width of described rectangular recess 4.2 equates with the width of described rectangular preiection 4.3.Adopt this pressure-reducing ring, breach on pressure-reducing ring is made as to a rectangular preiection and a form that rectangular recess coordinates, two wall laminatings of the both sides of projection and groove, like this, even if pressure-reducing ring in use weares and teares, it is large that breach spreading becomes, still some is to fit with two inwalls of groove to projection, still can stop oil to flow to low voltage side from high pressure side, and effect of easing stress is better, can be along with wearing and tearing variation, the life-span is longer.
The dimension scale of the length of described rectangular preiection 4.3 and the thickness of packing ring is 2:1～5:1.Adopt this structure, even if pressure-reducing ring wearing and tearing are too much, it is large that breach becomes, and still still fit with two inwalls of groove in the both sides of projection, so still can stop on high-tension side oil to flow out from indentation, there, and effect of easing stress is better.
Adopt the utility model to set up an oil sealing guard ring in oil sealing outside; be close to oil sealing outside, and on oil sealing guard ring, be also provided with convex annular and get up to prop up the lip of oil sealing, prevent that oil pressure from crossing ambassador's lip and opening; increased the anti-pressure ability of oil sealing, and oil sealing is not easy to damage.
Claims (4)
1. a hydrodynamic retarder seal arrangement; it comprises axle (1) and active chamber wall (3); described axle (1) is provided with oil sealing (6) with the outside of active chamber wall (3) joint; it is characterized in that: between described axle (1) and active chamber wall (3), be also provided with pressure-reducing ring (4); the outside of described oil sealing (6) is provided with oil sealing guard ring (5); described oil sealing guard ring (5) is a metal annular gasket, and the one side that described oil sealing guard ring (5) is pasting oil sealing (6) is provided with the annular protrusion (5.1) for propping up oil sealing (6) lip.
2. a kind of hydrodynamic retarder seal arrangement according to claim 1, it is characterized in that: described pressure-reducing ring (4) is a ring washer, on described ring washer, a place disconnects and forms a breach (4.1), the two ends of described disconnection, wherein the end face of one end is established a rectangular recess (4.2), the end face of the other end is provided with the rectangular preiection (4.3) matching with this rectangular recess (4.2), and the width of described rectangular recess (4.2) equates with the width of described rectangular preiection (4.3).
3. a kind of hydrodynamic retarder seal arrangement according to claim 2, is characterized in that: the dimension scale of the length of described rectangular preiection (4.3) and the thickness of packing ring is 2:1～5:1.
4. a kind of hydrodynamic retarder seal arrangement according to claim 1, is characterized in that: the inside of described oil sealing (6) is also provided with endless metal skeleton (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320366654.7U CN203548915U (en) | 2013-06-24 | 2013-06-24 | Sealing device for hydraulic retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320366654.7U CN203548915U (en) | 2013-06-24 | 2013-06-24 | Sealing device for hydraulic retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203548915U true CN203548915U (en) | 2014-04-16 |
Family
ID=50467035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320366654.7U Withdrawn - After Issue CN203548915U (en) | 2013-06-24 | 2013-06-24 | Sealing device for hydraulic retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203548915U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363119A (en) * | 2013-06-24 | 2013-10-23 | 宁波华盛汽车部件有限公司 | Hydraulic retarder sealing device |
| CN105156512A (en) * | 2015-09-09 | 2015-12-16 | 陕西法士特齿轮有限责任公司 | Oil sump structure of hydraulic retarder |
-
2013
- 2013-06-24 CN CN201320366654.7U patent/CN203548915U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363119A (en) * | 2013-06-24 | 2013-10-23 | 宁波华盛汽车部件有限公司 | Hydraulic retarder sealing device |
| CN103363119B (en) * | 2013-06-24 | 2016-03-09 | 宁波华盛汽车部件有限公司 | A kind of hydrodynamic retarder seal arrangement |
| CN105156512A (en) * | 2015-09-09 | 2015-12-16 | 陕西法士特齿轮有限责任公司 | Oil sump structure of hydraulic retarder |
| CN105156512B (en) * | 2015-09-09 | 2017-08-25 | 陕西法士特齿轮有限责任公司 | A kind of Retarder oil sump structure |
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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: 20140416 Effective date of abandoning: 20160309 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |