CN105673734A - Hydrodynamic retarder and application method thereof - Google Patents

Hydrodynamic retarder and application method thereof Download PDF

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Publication number
CN105673734A
CN105673734A CN201610113836.1A CN201610113836A CN105673734A CN 105673734 A CN105673734 A CN 105673734A CN 201610113836 A CN201610113836 A CN 201610113836A CN 105673734 A CN105673734 A CN 105673734A
Authority
CN
China
Prior art keywords
impeller
rotor
stator
retarder
working chamber
Prior art date
Application number
CN201610113836.1A
Other languages
Chinese (zh)
Inventor
连忠福
方赵锋
魏少辉
Original Assignee
宁波华盛联合制动科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 宁波华盛联合制动科技有限公司 filed Critical 宁波华盛联合制动科技有限公司
Priority to CN201610113836.1A priority Critical patent/CN105673734A/en
Publication of CN105673734A publication Critical patent/CN105673734A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/005Details of blades, e.g. shape
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/02Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades or like members braked by the fluid

Abstract

The invention discloses a hydrodynamic retarder. The hydrodynamic retarder comprises a shell and a transmission shaft; a stator impeller fixed to the shell and a rotor impeller capable of rotating relative to the stator impeller are arranged in the shell; the rotor impeller and the stator impeller define a working cavity; when the hydrodynamic retarder works, a distance between the stator impeller and the rotor impeller is 2-2.5 mm; and when the hydrodynamic retarder does not work, the distance between the stator impeller and the rotor impeller is 16-16.5 mm. When the hydrodynamic retarder does not work, air in the working cavity cannot form eddy currents between rotor blades and stator blades.

Description

Retarder and using method thereof

Technical field

The present invention relates to a kind of Retarder and using method thereof.

Background technology

Retarder is a kind of auxiliary brake device for automobile, is mainly used in motorbus, urban public traffic vehicles, heavy type

Truck and military vehicle, Retarder includes heat exchanger, impeller of rotor, stator impeller and housing, housing has shoe cream room, impeller of rotor and car transmissions and is fixed together, and in motion, impeller of rotor also can rotate automobile. During Retarder work, compression air enters shoe cream room, oil pressure in shoe cream room is entered stator impeller and working chamber that impeller of rotor encloses, when Retarder is started working, impeller of rotor drives fluid to rotate about the axis, fluid forms eddy current between rotor blade and stator vane, so that the rotation of impeller of rotor is formed resistance by fluid, thus realizing the decelerating effect to vehicle.

When Retarder does not work, impeller of rotor is as well as drive axis, and now impeller of rotor and stator impeller enclose airtight working chamber, there is in working chamber air, so, driving the air in working chamber to rotate when impeller of rotor rotates, air forms eddy current between rotor blade and stator vane, so that the rotation of impeller of rotor is formed resistance by air, so that normal traveling of vehicle can be formed resistance when not working by this Retarder.

Summary of the invention

The technical problem to be solved is to provide a kind of Retarder, and this Retarder air in working chamber when not working will not form eddy current between rotor blade and stator vane.

For solving above-mentioned technical problem, Retarder provided by the invention, it includes a housing and a power transmission shaft, a stator impeller fixed with housing and an impeller of rotor that can rotate it is provided with relative to stator impeller in housing, impeller of rotor and stator impeller enclose formation working chamber, the centre bore of impeller of rotor is axially formed sleeve portion, cannula portion is fixing to be nested with on power transmission shaft, the inwall of described cannula portion is provided with the first thread segment, power transmission shaft is provided with the second thread segment matched with the first thread segment, helical tooth on second thread segment has 11, and the helical angle of helical tooth is A, wherein A is 29 ~ 40 degree,

Being provided with limiting section on the outer wall of described cannula portion, one end of a stage clip and limiting section offset, and the other end of stage clip and housing offset;

When Retarder works, the distance between stator impeller and impeller of rotor is 2 ~ 2.5mm;

When Retarder does not work, the distance between stator impeller and impeller of rotor is 16 ~ 16.5mm.

As preferably, the helical angle of the described helical tooth on the second thread segment is 32 degree.

As preferably, when Retarder works, the distance between stator impeller and impeller of rotor is 2.25mm.

As preferably, when Retarder does not work, the distance between stator impeller and impeller of rotor is 16.25mm.

For solving above-mentioned technical problem, present invention also offers the using method of a kind of Retarder, comprise the following steps:

When Retarder is started working, fluid enters into working chamber from shoe cream room, power transmission shaft rotor driven wheel rotation, the rotation of impeller of rotor is applied counteracting force by the fluid in working chamber, the counteracting force that impeller of rotor is applied by fluid is more than the elastic force of stage clip, the counteracting force that impeller of rotor applies is made impeller of rotor overcome the elastic force of stage clip and close to stator impeller by fluid, impeller of rotor is the closer to stator impeller, the pressure of working chamber inner fluid is more big, the counteracting force that impeller of rotor is applied by fluid is more big, so that impeller of rotor is got over close to stator impeller, until when the distance between impeller of rotor and stator impeller is B, impeller of rotor stops mobile, wherein B is 2 ~ 2.5mm, wherein, impeller of rotor is 1 ~ 3 second from beginning to move into the interval stopping movement,

When Retarder quits work, fluid in working chamber returns to shoe cream room, power transmission shaft rotor driven wheel rotation, air is only had in working chamber, the air in the working chamber counteracting force elastic force less than spring rotating applying to impeller of rotor, spring drive rotor impeller moves so that impeller of rotor is away from stator impeller, until when the distance between impeller of rotor and stator impeller is C, impeller of rotor stops mobile, wherein C is 16 ~ 16.5mm, wherein, impeller of rotor is 1 ~ 3 second from beginning to move into the interval stopping movement.

The present invention compared with prior art, has the advantage that

When this Retarder does not work, stage clip drive rotor impeller moves to the direction away from stator impeller, so, between impeller of rotor and stator impeller, just form gap, so, impeller of rotor and stator impeller just cannot enclose airtight working chamber, when impeller of rotor rotates, air rotates along with impeller of rotor, but owing to being formed without airtight working chamber, make cannot be formed between rotor blade and stator vane eddy current, the rotation of impeller of rotor cannot be formed resistance by such air, so that normal traveling of vehicle will not be formed resistance when not working by this Retarder.

And the helical angle of the helical tooth on the second thread segment is 32 degree in the present invention, the helical angle of helical tooth is less, and the helical angle reducing helical tooth is when can make impeller of rotor rotate on power transmission shaft, the speed that impeller of rotor moves axially is accelerated, so, when Retarder starts so that impeller of rotor can faster near stator impeller, when Retarder quits work so that impeller of rotor can more quickly depart from stator impeller.

Accompanying drawing explanation

Fig. 1 is the structural representation of Retarder of the present invention;

Fig. 2 is the structural representation of power transmission shaft.

Wherein, 1, housing; 2, power transmission shaft; 201, the second thread segment; 3, stator impeller; 4, impeller of rotor; 401, cannula portion; 402, limiting section; 5, stage clip.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.

By Fig. 1, shown in Fig. 2, Retarder of the present invention includes housing 1 and a power transmission shaft 2, the stator impeller 3 fixed with housing 1 and the impeller of rotor 4 that can rotate it is provided with relative to stator impeller 3 in housing 1, impeller of rotor 4 and stator impeller 3 enclose formation working chamber, the centre bore of impeller of rotor 4 is axially formed sleeve portion 401, cannula portion 401 is fixing to be nested with on power transmission shaft 2, it is characterized in that: the inwall of described cannula portion 401 is provided with the first thread segment, power transmission shaft 2 is provided with the second thread segment 201 matched with the first thread segment, helical tooth on second thread segment 201 has 11, and the helical angle of helical tooth is 32 degree.

Being provided with limiting section 402 on the outer wall of described cannula portion 401, one end of a stage clip 5 and limiting section 402 offset, and the other end of stage clip 5 and housing 1 offset.

When Retarder works, the distance between stator impeller 3 and impeller of rotor 4 is 2.25mm.

When Retarder does not work, the distance between stator impeller 3 and impeller of rotor 4 is 16.25mm.

The using method of above-mentioned Retarder is as follows:

When Retarder is started working, fluid enters into working chamber from shoe cream room, power transmission shaft rotor driven wheel rotation, the rotation of impeller of rotor is applied counteracting force by the fluid in working chamber, the counteracting force that impeller of rotor is applied by fluid is more than the elastic force of stage clip, the counteracting force that impeller of rotor applies is made impeller of rotor overcome the elastic force of stage clip and close to stator impeller by fluid, impeller of rotor is the closer to stator impeller, the pressure of working chamber inner fluid is more big, the counteracting force that impeller of rotor is applied by fluid is more big, so that impeller of rotor is got over close to stator impeller, until when the distance between impeller of rotor and stator impeller is 2.25mm, impeller of rotor stops mobile, wherein, impeller of rotor is 1.5 seconds from beginning to move into the interval stopping movement.

When Retarder quits work, fluid in working chamber returns to shoe cream room, power transmission shaft rotor driven wheel rotation, air is only had in working chamber, the air in the working chamber counteracting force elastic force less than spring rotating applying to impeller of rotor, spring drive rotor impeller moves so that impeller of rotor is away from stator impeller, until when the distance between impeller of rotor and stator impeller is 16.25mm, impeller of rotor stops mobile, wherein, impeller of rotor is 1.5 seconds from beginning to move into the interval stopping movement.

Reduce impeller of rotor when helical angle can make Retarder start and arrive the time shortening of stator impeller, on the contrary, when Retarder quits work, also the time that impeller of rotor departs from stator impeller can be made to shorten, it is more fast that impeller of rotor departs from stator impeller, the counteracting force that the rotation of impeller of rotor is applied by the air in working chamber will be made more little, reduce the energy loss of automobile.

The Retarder of the present invention, when Retarder start and stop, as long as impeller of rotor arrives and departs from all 1.5 seconds time of stator impeller, speed.

Applying preferably example as far as the present invention above and be made that explanation, but be not to be construed as limitations on claims, the structure of the present invention can have other to change, and is not limited to said structure. In a word, all various changes made in the protection domain of the independent claims of the present invention are all in protection scope of the present invention.

Claims (5)

1. a Retarder, it includes a housing (1) and a power transmission shaft (2), the stator impeller (3) fixed with housing (1) and the impeller of rotor (4) that can rotate it is provided with relative to stator impeller (3) in housing (1), impeller of rotor (4) and stator impeller (3) enclose formation working chamber, the centre bore of impeller of rotor (4) is axially formed sleeve portion (401), cannula portion (401) is fixing to be nested with on power transmission shaft (2), it is characterized in that: the inwall of described cannula portion (401) is provided with the first thread segment, power transmission shaft (2) is provided with the second thread segment (201) matched with the first thread segment, helical tooth on second thread segment (201) has 11, and the helical angle of helical tooth is A, wherein A is 29 ~ 40 degree,
Being provided with limiting section (402) on the outer wall of described cannula portion (401), one end of a stage clip (5) and limiting section (402) offset, and the other end of stage clip (5) and housing (1) offset;
When Retarder works, the distance between stator impeller (3) and impeller of rotor (4) is 2 ~ 2.5mm;
When Retarder does not work, the distance between stator impeller (3) and impeller of rotor (4) is 16 ~ 16.5mm.
2. Retarder according to claim 1, it is characterised in that: the helical angle of the described helical tooth on the second thread segment (201) is 32 degree.
3. Retarder according to claim 1, it is characterised in that: when Retarder works, the distance between stator impeller (3) and impeller of rotor (4) is 2.25mm.
4. Retarder according to claim 1, it is characterised in that: when Retarder does not work, the distance between stator impeller (3) and impeller of rotor (4) is 16.25mm.
5. the using method based on the Retarder of claim 1, it is characterised in that:
When Retarder is started working, fluid enters into working chamber from shoe cream room, power transmission shaft rotor driven wheel rotation, the rotation of impeller of rotor is applied counteracting force by the fluid in working chamber, the counteracting force that impeller of rotor is applied by fluid is more than the elastic force of stage clip, the counteracting force that impeller of rotor applies is made impeller of rotor overcome the elastic force of stage clip and close to stator impeller by fluid, impeller of rotor is the closer to stator impeller, the pressure of working chamber inner fluid is more big, the counteracting force that impeller of rotor is applied by fluid is more big, so that impeller of rotor is got over close to stator impeller, until when the distance between impeller of rotor and stator impeller is B, impeller of rotor stops mobile, wherein B is 2 ~ 2.5mm, wherein, impeller of rotor is 1 ~ 3 second from beginning to move into the interval stopping movement,
When Retarder quits work, fluid in working chamber returns to shoe cream room, power transmission shaft rotor driven wheel rotation, air is only had in working chamber, the air in the working chamber counteracting force elastic force less than spring rotating applying to impeller of rotor, spring drive rotor impeller moves so that impeller of rotor is away from stator impeller, until when the distance between impeller of rotor and stator impeller is C, impeller of rotor stops mobile, wherein C is 16 ~ 16.5mm, wherein, impeller of rotor is 1 ~ 3 second from beginning to move into the interval stopping movement.
CN201610113836.1A 2016-03-01 2016-03-01 Hydrodynamic retarder and application method thereof CN105673734A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105909696A (en) * 2016-06-22 2016-08-31 陕西法士特齿轮有限责任公司 Spline shaft, retarder oil channel structure based on spline shaft and lubricating method
CN108233671A (en) * 2018-02-10 2018-06-29 北京工业大学 A kind of electric-hydraulic combined retarder of internal pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998035170A1 (en) * 1997-02-06 1998-08-13 Voith Turbo Gmbh & Co. Kg Hydrodynamic retarder with an axially displaceable stator
CN1650118A (en) * 2002-05-02 2005-08-03 沃伊思特博两合公司 Hydrodynamic brake
CN204153016U (en) * 2013-05-15 2015-02-11 沃依特专利有限责任公司 Rotor unit
CN204572862U (en) * 2015-05-04 2015-08-19 宁波华盛汽车部件有限公司 Hydrodynamic retarder
CN205388114U (en) * 2016-03-01 2016-07-20 宁波华盛联合制动科技有限公司 Hydraulic retarder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998035170A1 (en) * 1997-02-06 1998-08-13 Voith Turbo Gmbh & Co. Kg Hydrodynamic retarder with an axially displaceable stator
CN1650118A (en) * 2002-05-02 2005-08-03 沃伊思特博两合公司 Hydrodynamic brake
CN204153016U (en) * 2013-05-15 2015-02-11 沃依特专利有限责任公司 Rotor unit
CN204572862U (en) * 2015-05-04 2015-08-19 宁波华盛汽车部件有限公司 Hydrodynamic retarder
CN205388114U (en) * 2016-03-01 2016-07-20 宁波华盛联合制动科技有限公司 Hydraulic retarder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105909696A (en) * 2016-06-22 2016-08-31 陕西法士特齿轮有限责任公司 Spline shaft, retarder oil channel structure based on spline shaft and lubricating method
CN108233671A (en) * 2018-02-10 2018-06-29 北京工业大学 A kind of electric-hydraulic combined retarder of internal pump

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Application publication date: 20160615