CN109578467B - Hydraulic retarder - Google Patents
Hydraulic retarder Download PDFInfo
- Publication number
- CN109578467B CN109578467B CN201811488101.2A CN201811488101A CN109578467B CN 109578467 B CN109578467 B CN 109578467B CN 201811488101 A CN201811488101 A CN 201811488101A CN 109578467 B CN109578467 B CN 109578467B
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- oil
- pump body
- bolt
- hole
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 229920001973 fluoroelastomer Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000005461 lubrication Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
- F16N7/40—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems in a closed circulation system
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to an automobile retarder, which aims at solving the problems that an oil seal connected with one end of a driving gear by a rotating shaft of the existing hydrodynamic retarder is easy to damage and lose efficacy due to poor lubrication; the screw pump comprises a screw pump body and a screw pump cover, and the screw pump cover and the screw pump body form a first cavity; the shell and the threaded pump body form a spiral groove, the shell forms a second cavity, and the first cavity is communicated with the second cavity through the spiral groove; the rotating shaft is in sealing connection with the shell through an oil seal; one end of the rotating shaft is provided with a rotating shaft oil delivery hole, the rotating shaft oil delivery hole is provided with threads, and the threaded pump body is fixedly connected with the rotating shaft through a bolt; the screw pump body is provided with a pump body oil inlet hole; the screw rod of the bolt is provided with a bolt oil inlet hole and a bolt oil delivery hole; one end of the rotating shaft connecting driving gear is provided with a rotating shaft oil outlet hole, and the pump body oil inlet hole, the bolt oil delivery hole, the rotating shaft oil delivery hole and the rotating shaft oil outlet hole are communicated.
Description
Technical Field
The invention relates to an automobile retarder, in particular to a hydraulic retarder.
Background
The hydraulic retarder is an automobile braking device which utilizes liquid damping to generate retarding effect.
Chinese patent (application number 201620618702.0) discloses an idle forced lubrication system of a hydrodynamic retarder. The hydraulic retarder adopted by the system is shown in fig. 1, and comprises a shell 01, a rotor 02 and a rotating shaft 03, wherein the rotor 02 and the rotating shaft 03 are arranged in the shell 01, and the rotating shaft 03 drives the rotor 02 to rotate. One end of the rotating shaft 03 is connected with a screw pump 04, and the other end is provided with a retarder driving gear 05.
The screw pump 04 comprises a screw pump body 041 and a screw pump cover 042, wherein a first cavity 06 is formed between the screw pump cover 042 and the screw pump body 041; the outer circle of the threaded pump body 041 is provided with threads, the shell 01 is matched with the outer circle surface of the threaded pump body 041 to form a spiral groove 07, and a second cavity 08 is formed at the position of the shell 01 close to the threaded pump body 041; the first cavity 06 communicates with the second cavity 08 via the helical groove 07. The rotation of the rotating shaft 03 drives the screw pump 04 to rotate, and the screw pump 04 pumps oil in the first cavity 06 into the second cavity 08 through the spiral groove 07 for forced lubrication of the hydrodynamic retarder.
In order to ensure the sealing performance of one end of the retarder mounting driving gear 05, an oil seal 051 is arranged between the rotating shaft 03 and the shell 01. However, since the oil seal 051 is only manually lubricated during installation, the retarder is easy to damage and lose efficacy due to poor lubrication after being used for a period of time, and the medium in the retarder is leaked.
Disclosure of Invention
The invention aims to overcome the defect that an oil seal at one end of a rotating shaft connected with a driving gear of the existing hydrodynamic retarder is easy to damage and lose efficacy due to poor lubrication.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: a hydrodynamic retarder comprises a shell and a rotating shaft, wherein one end of the rotating shaft is provided with a screw pump, and the other end of the rotating shaft is provided with a driving gear; the screw pump comprises a screw pump body and a screw pump cover, and a first cavity is formed between the screw pump cover and the screw pump body; the outer circle of the threaded pump body is provided with threads, the shell is matched with the outer circle surface of the threaded pump body to form a spiral groove, a second cavity is formed at the position, close to the threaded pump body, of the shell, and the first cavity is communicated with the second cavity through the spiral groove; one side of the rotating shaft, provided with the driving gear, is in sealing connection with the shell through an oil seal; the screw pump is characterized in that one end of the rotating shaft, which is connected with the screw pump body, is provided with a rotating shaft oil conveying hole, the rotating shaft oil conveying hole is provided with threads, and the screw pump body is fixedly connected with the rotating shaft through bolts; the outer circumference of the threaded pump body is provided with a pump body oil inlet hole perpendicular to the central axis of the threaded pump body; the outer circumference of the screw rod of the bolt is provided with a bolt oil inlet perpendicular to the axis of the bolt corresponding to the oil inlet of the pump body; the screw rod of the bolt is provided with a bolt oil delivery hole along the axial direction of the screw rod corresponding to the rotating shaft oil delivery hole; the bolt oil inlet hole, the bolt oil delivery hole and the rotating shaft oil delivery hole are communicated; the outer circumference of one end of the rotating shaft connected with the driving gear is provided with a rotating shaft oil outlet hole for lubricating the oil seal, and the rotating shaft oil outlet hole is communicated with the rotating shaft oil delivery hole.
Further, the inner surface of the shell provided with the threaded pump body extends along the axial direction of the rotating shaft to form an annular flow guide part for guiding oil; the outer circumference of the threaded pump body corresponding to the annular flow guide part extends towards the annular flow guide part to form a flange, and a gap for throttling oil is reserved between the flange and the shell. The gap plays a role in throttling, most of oil passing through the spiral groove is blocked, the oil is extruded into the oil inlet hole of the pump body, and then the oil passes through the hole bolt oil inlet hole, the bolt oil delivery hole, the rotating shaft oil delivery hole and the rotating shaft oil delivery hole to forcedly lubricate the oil seal; the small part of oil passing through the gap directly flows into the bearing under the guidance of the guide ring, thereby playing a role in lubricating the bearing.
Further, the axis of the rotating shaft oil delivery hole and the axis of the bolt oil delivery hole are coincident with the axis of the rotating shaft.
Further, the oil seal is a high-pressure oil seal made of fluororubber.
Compared with the prior art, the invention has the advantages that:
according to the invention, the original retarder forced lubrication screw pump is utilized, and the lubrication liquid is introduced into the oil seal part by simply modifying the hydraulic retarder, so that the oil seal is effectively prevented from being damaged due to lack of lubrication, and the occurrence of the leakage phenomenon of a retarder medium at the end where the oil seal is arranged is effectively avoided.
Drawings
FIG. 1 is a schematic diagram of a conventional retarder;
FIG. 2 is a schematic view of an embodiment of a hydrodynamic retarder according to the invention;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
fig. 4 is an enlarged schematic view of a portion B in fig. 3.
The description of the various reference numerals in fig. 1 follows:
01-a housing; 02-a rotor; 03-a rotating shaft; 04-screw pump, 041-screw pump body, 042-screw pump cover; 05-a drive gear; 051-oil seal; 06-a first cavity; 07-helical grooves; 08-second cavity.
The description of the reference numerals in fig. 2 to 4 is as follows:
1-a shell; 2-a rotor; 3-rotating shaft, 31-rotating shaft oil delivery holes and 32-rotating shaft oil delivery holes; 4-screw pump, 41-screw pump body, 411-pump body oil inlet hole, 42-screw pump cover; 5-a driving gear; 51-oil seal; 6-a first cavity; 7-spiral grooves; 8-a second cavity; 9-bolts, 91-bolt oil inlet holes and 92-bolt oil delivery holes; 10-annular flow guiding part, 11-flange.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
As shown in fig. 2 and 3, the present embodiment provides a hydrodynamic retarder, which includes a housing 1, a rotor and a rotating shaft 3, wherein one end of the rotating shaft 3 is provided with a screw pump 4, and the other end is provided with a driving gear 5; the screw pump 4 comprises a screw pump body 41 and a screw pump cover 42, and a first cavity 6 is formed between the screw pump cover 42 and the screw pump body 41; the outer circle of the threaded pump body 41 is provided with threads, the shell 1 is matched with the outer circle surface of the threaded pump body 41 to form a spiral groove 7, a second cavity 8 is formed at the position, close to the threaded pump body 41, of the shell 1, and the first cavity 6 is communicated with the second cavity 8 through the spiral groove 7. One side of the rotating shaft 3 provided with the driving gear 5 is in sealing connection with the shell 1 through an oil seal 51.
Referring to fig. 3, one end of the threaded pump body 41 of the rotating shaft 3 is provided with a rotating shaft oil delivery hole 31, the rotating shaft oil delivery hole 31 is provided with threads, and the pump body of the threaded pump 4 is fixedly connected with the rotating shaft 3 through a bolt 9; the outer circumference of the threaded pump body 41 is provided with a pump body oil inlet 411 perpendicular to the central axis of the threaded pump body 41; the outer circumference of the screw rod of the bolt 9 is provided with a bolt oil inlet hole 91 perpendicular to the axis of the bolt 9 corresponding to the pump body oil inlet hole 411; the screw of the bolt 9 is provided with a bolt oil hole 92 along the axial direction of the screw corresponding to the rotating shaft oil hole 31; the axis of the rotary shaft oil hole 31 and the axis of the bolt oil hole 92 are coincident with the axis of the rotary shaft 3.
The bolt oil inlet hole 91, the bolt oil delivery hole 92 and the rotating shaft oil delivery hole 31 are communicated; the outer circumference of one end of the rotating shaft 3 connected with the driving gear 5 is provided with a rotating shaft oil outlet hole 32 for lubricating the oil seal 51, and the rotating shaft oil outlet hole 32 is communicated with the rotating shaft oil inlet hole 31.
As shown in fig. 4, the inner surface of the housing 1 provided with the threaded pump body 41 extends along the axial direction of the rotating shaft 3 to form an annular flow guiding part 10 for guiding oil; the threaded pump body 41 extends towards the annular flow guiding part 10 to form a flange 11 corresponding to the outer circumference of the annular flow guiding part 10, and a gap for throttling oil is reserved between the flange 11 and the shell 1.
Referring to fig. 3 and 4, the rotor 2 is driven to rotate by the rotating shaft 3, and the threaded pump body 41 rotates together with the rotating shaft 3. As long as the retarder rotor rotates, the oil in the first cavity 6 will enter the retarder through the spiral groove 7 under the action of the screw pump 4. Part of oil pumped by the screw pump 4 is blocked by the flange 11 and is extruded into the pump body oil inlet 411, and then the oil is lubricated and sealed 51 through the bolt oil inlet 91, the bolt oil inlet 92, the rotating shaft oil inlet 31 and the rotating shaft oil outlet 32; the other part of oil enters the second cavity 8 through the clearance between the flange 11 and the shell 1 to lubricate parts such as bearings.
The foregoing description of the preferred embodiments of the present invention is merely illustrative, and the technical solution of the present invention is not limited thereto, and any known modifications may be made by those skilled in the art based on the main technical concept of the present invention, which falls within the technical scope of the present invention.
Claims (4)
1. A hydrodynamic retarder comprises a shell (1) and a rotating shaft (3), wherein one end of the rotating shaft (3) is provided with a screw pump (4), and the other end is provided with a driving gear (5);
the screw pump (4) comprises a screw pump body (41) and a screw pump cover (42), and a first cavity (6) is formed between the screw pump cover (42) and the screw pump body (41);
the outer circle of the threaded pump body (41) is provided with threads, the shell (1) is matched with the outer circle surface of the threaded pump body (41) to form a spiral groove (7), a second cavity (8) is formed at the position, close to the threaded pump body (41), of the shell (1), and the first cavity (6) is communicated with the second cavity (8) through the spiral groove (7);
one side of the rotating shaft (3) provided with the driving gear (5) is in sealing connection with the shell (1) through an oil seal (51);
the method is characterized in that: one end of the rotating shaft (3) connected with the threaded pump body (41) is provided with a rotating shaft oil conveying hole (31), the rotating shaft oil conveying hole (31) is provided with threads, and the pump body of the threaded pump (4) is fixedly connected with the rotating shaft (3) through a bolt (9);
the outer circumference of the threaded pump body (41) is provided with a pump body oil inlet hole (411) perpendicular to the central axis of the threaded pump body (41);
the outer circumference of the screw rod of the bolt (9) is provided with a bolt oil inlet hole (91) perpendicular to the axis of the bolt (9) corresponding to the pump body oil inlet hole (411); the screw rod of the bolt (9) is provided with a bolt oil delivery hole (92) along the axial direction of the screw rod corresponding to the rotating shaft oil delivery hole (31); the bolt oil inlet hole (91), the bolt oil delivery hole (92) and the rotating shaft oil delivery hole (31) are communicated;
the outer circumference of one end of the rotating shaft (3) connected with the driving gear (5) is provided with a rotating shaft oil outlet hole (32) for lubricating the oil seal (51), and the rotating shaft oil outlet hole (32) is communicated with the rotating shaft oil conveying hole (31).
2. A hydrodynamic retarder according to claim 1, characterized in that: the inner surface of a shell (1) provided with a threaded pump body (41) axially extends along a rotating shaft (3) to form an annular flow guide part (10) for guiding oil;
the outer circumference of the threaded pump body (41) corresponding to the annular flow guide part (10) extends towards the annular flow guide part (10) to form a flange (11), and a gap for throttling oil is reserved between the flange (11) and the shell (1).
3. A hydrodynamic retarder according to claim 1 or 2, characterized in that: the axis of the rotating shaft oil conveying hole (31) and the axis of the bolt oil conveying hole (92) are coincident with the axis of the rotating shaft (3).
4. A hydrodynamic retarder according to claim 3, characterized in that: the oil seal (51) is made of fluororubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488101.2A CN109578467B (en) | 2018-12-06 | 2018-12-06 | Hydraulic retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488101.2A CN109578467B (en) | 2018-12-06 | 2018-12-06 | Hydraulic retarder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578467A CN109578467A (en) | 2019-04-05 |
| CN109578467B true CN109578467B (en) | 2024-03-15 |
Family
ID=65926480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811488101.2A Active CN109578467B (en) | 2018-12-06 | 2018-12-06 | Hydraulic retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578467B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718969A (en) * | 2022-03-31 | 2022-07-08 | 贵阳丽天苍泰科技有限公司 | Hydraulic retarder |
| CN115163699A (en) * | 2022-06-02 | 2022-10-11 | 阜新德尔汽车部件股份有限公司 | Lubricating structure of hydraulic retarder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987874A (en) * | 1973-03-28 | 1976-10-26 | General Motors Corporation | Transmission with retarder and controls |
| US6234285B1 (en) * | 1996-06-14 | 2001-05-22 | Voith Turbo Gmbh & Co Kg | Retarder |
| JP2005076861A (en) * | 2003-09-03 | 2005-03-24 | Tochigi Fuji Ind Co Ltd | Differential device |
| CN104482078A (en) * | 2014-12-10 | 2015-04-01 | 陕西法士特齿轮有限责任公司 | Parallel hydrodynamic retarder structure supported by double cone bearings |
| CN105673733A (en) * | 2016-03-01 | 2016-06-15 | 宁波华盛联合制动科技有限公司 | Oil seal lubricating structure of hydrodynamic retarder |
| CN105953065A (en) * | 2016-06-20 | 2016-09-21 | 陕西法士特齿轮有限责任公司 | Threaded pump |
| CN209539864U (en) * | 2018-12-06 | 2019-10-25 | 陕西法士特汽车传动集团有限责任公司 | A kind of Retarder |
-
2018
- 2018-12-06 CN CN201811488101.2A patent/CN109578467B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3987874A (en) * | 1973-03-28 | 1976-10-26 | General Motors Corporation | Transmission with retarder and controls |
| US6234285B1 (en) * | 1996-06-14 | 2001-05-22 | Voith Turbo Gmbh & Co Kg | Retarder |
| JP2005076861A (en) * | 2003-09-03 | 2005-03-24 | Tochigi Fuji Ind Co Ltd | Differential device |
| CN104482078A (en) * | 2014-12-10 | 2015-04-01 | 陕西法士特齿轮有限责任公司 | Parallel hydrodynamic retarder structure supported by double cone bearings |
| CN105673733A (en) * | 2016-03-01 | 2016-06-15 | 宁波华盛联合制动科技有限公司 | Oil seal lubricating structure of hydrodynamic retarder |
| CN105953065A (en) * | 2016-06-20 | 2016-09-21 | 陕西法士特齿轮有限责任公司 | Threaded pump |
| CN209539864U (en) * | 2018-12-06 | 2019-10-25 | 陕西法士特汽车传动集团有限责任公司 | A kind of Retarder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109578467A (en) | 2019-04-05 |
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