CN205639393U - Hydraulic retarder - Google Patents
Hydraulic retarder Download PDFInfo
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- CN205639393U CN205639393U CN201620454388.7U CN201620454388U CN205639393U CN 205639393 U CN205639393 U CN 205639393U CN 201620454388 U CN201620454388 U CN 201620454388U CN 205639393 U CN205639393 U CN 205639393U
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Abstract
The utility model provides a hydraulic retarder, relates to hydraulic machinery technical field, and a hydraulic retarder by constituteing in transmission shaft (1), rotor blade wheel (2), stator impeller (3), oil circuit (4), heat exchanger (5), oil storage pool (6), compressed air inlet (7), wherein forms between rotor blade wheel (2) and stator impeller (3) working chamber (8), rotor blade wheel circulation circle center is the acute angle with the angle a that stator impeller circulation circle center and two impeller intervals formed. The utility model discloses angle to between rotor blade wheel and the stator impeller is tested, has confirmed the blade angle of a hydraulic retarder braking torque maximize, makes things convenient for the design of hydraulic retarder braking torque.
Description
Technical field
This utility model relates to hydraulic machine technical field, is specifically related to a kind of hydraulic retarder determined for vehicle auxiliary braking.
Background technology
Hydraulic retarder is a kind of by device less for the abrasion that changes mechanical energy is liquid heat energy, especially for braking vehicle or other fixing equipment.That is one impeller of rotor driven of two impellers and a relatively neighbour layout of fixing stator impeller, thus form a circular working chamber, in this working chamber, working media forms flow circuits.Impeller of rotor drives fluid to rotate about the axis；Meanwhile, fluid moves along direction blade, gets rid of to stator.Stator vane produces retroaction to fluid, and fluid outflow stator goes back to impact rotor again, thus forms the moment of resistance to rotor, hinders the rotation of rotor, thus realizes the retarding braking effect to vehicle.
The development of hydraulic machine at present is mainly the realization to function and the optimization of physical dimension, and hydraulic retarder braking torque is mainly designed to rule of thumb determine with analogy method, wherein its braking torque and manufacture, assembling are affected very big with the mutual relation of stator impeller by hydraulic retarder impeller of rotor, and this relation is determined by the method that there is presently no a system.
Summary of the invention
For there being the defect of technology on overcoming, a kind of hydraulic retarder is provided, the hydraulic retarder that working media is oil especially for vehicle auxiliary braking, make the round center radius of its impeller of rotor circulation and the difference of stator impeller circulation circle center radius and the pass of two impeller spacing tie up to proper range interior without affecting its braking torque, make the maximized impeller of rotor of braking torque and the blade angle of stator impeller of hydraulic retarder.
For achieving the above object, this utility model uses such as purgation technical scheme:
A kind of hydraulic retarder, is made up of power transmission shaft, impeller of rotor, stator impeller, oil circuit, heat exchanger, oil storage pool, compressed air inlet.During hydraulic retarder work, the compressed air intlet of compressed air enters oil storage pool, the fluid in oil storage pool is pressed into through oil circuit the working chamber formed by impeller of rotor and stator impeller, and hydraulic retarder is started working.Rotor drives fluid to rotate about the axis；Meanwhile, fluid moves along the direction blade of impeller of rotor, gets rid of to stator impeller.The blade of stator impeller produces retroaction to fluid, and fluid outflow stator impeller goes back to impact rotor impeller again, thus forms the moment of resistance to impeller of rotor, hinders the rotation of impeller of rotor, thus realizes the decelerating effect to vehicle.Working solution makes import and export form pressure differential in working chamber in motor process, oil circulation flows, and during by heat exchanger, the heat medium that is cooled is taken away.
This hydraulic retarder has in the range of the angle a that the difference at impeller of rotor circulation circle center and stator impeller circulation circle center and two impeller spacing are formed spends 15 to 45, and when this angle a is less than 45 degree, the braking torque of hydraulic retarder changes hardly；When this angle is more than 45 degree, the braking torque of hydraulic retarder significantly reduces；The braking torque produced when this angle is less than 15 degree reduces, and in working chamber, oil pressure raises, and part air-tightness requires to improve, and manufacturing cost increases, and therefore, a angle that hydraulic retarder has 15 to 45 degree is most suitable.
Further, the blade of described impeller of rotor is 40 ° ~ 45 ° with the angle of the vertical cross-section of described impeller of rotor.
Further, the blade of described impeller of rotor is 41.5 ± 1 degree with the angle of the vertical cross-section of described impeller of rotor.
Further, the blade of described stator impeller is 40 ° ~ 45 ° with the angle of the vertical cross-section of described stator impeller.
Further, the blade of described stator impeller is 41.5 ± 1 degree with the angle of the vertical cross-section of described stator impeller.
Owing to technique scheme is used, this utility model compared with prior art has the advantage that
A kind of hydraulic retarder that this utility model provides, tests for the angle formed between impeller of rotor and stator impeller, it is thus identified that a kind of maximized blade angle of hydraulic retarder braking torque, facilitates the design of hydraulic retarder braking torque.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of hydraulic retarder of this utility model.
Fig. 2 is the front view that impeller of rotor is combined with stator impeller.
Fig. 3 is the Fig. 2 sectional view along A-A direction.
In figure: 1. power transmission shaft；2. impeller of rotor；3. stator impeller；4. oil circuit；5. heat exchanger；6. oil storage pool；7. compressed air inlet；8. working chamber.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is further described by embodiment:
Embodiment:
As shown in Figure 1: a kind of hydraulic retarder, it is made up of power transmission shaft 1, impeller of rotor 2, stator impeller 3, oil circuit 4, heat exchanger 5, oil storage pool 6, compressed air inlet 7.During hydraulic retarder work, the compressed air intlet of compressed air 7 enters oil storage pool 6, and the fluid in oil storage pool 6 is pressed into the working chamber 8 formed by impeller of rotor and stator impeller through oil circuit 4, and hydraulic retarder is started working.Impeller of rotor 2 drives fluid to rotate about the axis；Meanwhile, fluid moves along the direction blade of impeller of rotor 2, gets rid of to stator impeller 3.The blade of stator impeller 3 produces retroaction to fluid, and fluid outflow stator impeller 3 goes back to impact rotor impeller 2 again, thus forms the moment of resistance to impeller of rotor 2, hinders the rotation of impeller of rotor 2, thus realizes the decelerating effect to vehicle.Working solution makes import and export form pressure differential in working chamber 8 in motor process, oil circulation flows, and during by heat exchanger 5, the heat medium that is cooled is taken away.When hydraulic retarder quits work, the compressed air intlet of compressed air 7 is discharged, fluid in oil storage pool 6 does not enter back into hydraulic retarder working chamber 8, and the fluid in working chamber 8 rotates with impeller of rotor 2 and produce the effect of centrifugal force and flow back to oil storage pool 6 through oil circuit 4 and heat exchanger 5 under centrifugal action, no longer produce braking torque after the emptying of fluid in hydraulic retarder working chamber 8.
In order to confirm a kind of maximized blade angle of hydraulic retarder braking torque during this, the angle a that the difference at center round to impeller of rotor circulation (Rz mark in figure) and stator impeller circulation circle center (Rd mark in figure) and two impeller spacing are formed is tested, when this angle a is less than 45 degree, the braking torque of hydraulic retarder changes hardly；When this angle is more than 45 degree, the braking torque of hydraulic retarder significantly reduces；The braking torque produced when this angle is less than 15 degree reduces, and in working chamber, oil pressure raises, and part air-tightness requires to improve, and manufacturing cost increases.Therefore, hydraulic retarder have 15 to 45 degree a angles most suitable.
The distribution angle of the blade of the same blade to impeller of rotor and stator impeller is tested, and determines its maximum braking angle.The blade of this hydraulic retarder impeller of rotor becomes 40 degree to 45 degree angles with the blade of stator impeller with plane shown in drawing after tested, and when particularly 41.5 ± 1 degree, hydraulic retarder has the braking torque of maximum.Shown in Fig. 2 and Fig. 3, plane shown in drawing is the cross section of display in Fig. 3, and it is same cross section with the vertical cross-section of impeller of rotor and stator impeller.
The technical program is tested for the angle formed between impeller of rotor and stator impeller, it is thus identified that a kind of maximized blade angle of hydraulic retarder braking torque, facilitates the design of hydraulic retarder braking torque.
Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow person skilled in the art will appreciate that content of the present utility model and to implement according to this, can not limit protection domain of the present utility model with this.All equivalence changes done according to this utility model or modification, all should contain within protection domain of the present utility model.
Claims (6)
1. a hydraulic retarder, it is made up of power transmission shaft, impeller of rotor, stator impeller, oil circuit, heat exchanger, oil storage pool, compressed air inlet, wherein form working chamber between impeller of rotor and stator impeller, it is characterised in that: the angle a that the difference at described impeller of rotor circulation circle center and stator impeller circulation circle center and two impeller spacing are formed is acute angle.
A kind of hydraulic retarder the most according to claim 1, it is characterised in that: the angle of described angle a is between 15 ° ~ 45 °.
A kind of hydraulic retarder the most according to claim 2, it is characterised in that: the blade of described impeller of rotor is 40 ° ~ 45 ° with the angle of the vertical cross-section of described impeller of rotor.
A kind of hydraulic retarder the most according to claim 3, it is characterised in that: the blade of described impeller of rotor is 41.5 ± 1 degree with the angle of the vertical cross-section of described impeller of rotor.
A kind of hydraulic retarder the most according to claim 2, it is characterised in that: the blade of described stator impeller is 40 ° ~ 45 ° with the angle of the vertical cross-section of described stator impeller.
A kind of hydraulic retarder the most according to claim 5, it is characterised in that: the blade of described stator impeller is 41.5 ± 1 degree with the angle of the vertical cross-section of described stator impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620454388.7U CN205639393U (en) | 2016-05-18 | 2016-05-18 | Hydraulic retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620454388.7U CN205639393U (en) | 2016-05-18 | 2016-05-18 | Hydraulic retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205639393U true CN205639393U (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620454388.7U Active CN205639393U (en) | 2016-05-18 | 2016-05-18 | Hydraulic retarder |
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| Country | Link |
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| CN (1) | CN205639393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757145A (en) * | 2016-05-18 | 2016-07-13 | 苏州特速安机电科技有限公司 | Hydraulic retarder |
-
2016
- 2016-05-18 CN CN201620454388.7U patent/CN205639393U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757145A (en) * | 2016-05-18 | 2016-07-13 | 苏州特速安机电科技有限公司 | Hydraulic retarder |
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