CN210135185U - Hydraulic speed reducer - Google Patents
Hydraulic speed reducer Download PDFInfo
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- CN210135185U CN210135185U CN201920760719.3U CN201920760719U CN210135185U CN 210135185 U CN210135185 U CN 210135185U CN 201920760719 U CN201920760719 U CN 201920760719U CN 210135185 U CN210135185 U CN 210135185U
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- speed change
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Abstract
The utility model discloses a hydraulic speed reducer, attached vehicle gearbox installs, and with vehicle gearbox series connection, it includes the casing, first pivot, and integrated rotor wheel in the casing, stator impeller, second pivot and speed adjusting mechanism, form the working chamber between rotor wheel and the stator impeller, the second pivot links to each other with rotor wheel, first pivot stretches into in the casing and links to each other with the second pivot through speed adjusting mechanism, and the one end of first pivot links to each other with vehicle gearbox's output shaft, the looks remote site links to each other with the transaxle. The utility model discloses an integrated speed regulating mechanism in hydraulic speed reducer's casing makes it have the speed governing function, changes hydraulic speed reducer's mounting means simultaneously, makes its attached vehicle gearbox install and with vehicle gearbox series connection, effectively reduces axial installation dimension.
Description
Technical Field
The utility model belongs to the technical field of the hydromechanical technique and specifically relates to an install hydraulic speed reducer between vehicle transmission and vehicle drive axle.
Background
For vehicles with high speed and heavy load, short braking distance and quick response, the requirement of people on the safety of the vehicles cannot be met only by the traditional mechanical friction type brake, and the hydraulic retarder can safely and reliably assist the braking of the vehicles to enable the vehicles to meet the safety requirement, so that the hydraulic retarder is widely applied to the vehicles.
The hydraulic speed reducer is a device which converts mechanical energy into liquid heat energy and has small abrasion, and comprises a rotor impeller, a stator impeller, a quick liquid charging and discharging mechanism and the like, wherein a working cavity is formed between the rotor impeller and the stator impeller. When the brake device works, the rotor impeller is driven by a transmission system of a vehicle, after working fluid flows into the working cavity, the rotor impeller drives the working fluid to move towards the stator impeller, the stator impeller generates reaction force on the working fluid, so that the working fluid impacts the rotor impeller to form resistance moment to the rotor impeller, the rotation of the rotor impeller is blocked, and then the deceleration braking effect on the vehicle is realized.
In the prior art, a hydrodynamic retarder usually does not have a speed regulation function, that is, the rotating speed of a rotor impeller is kept consistent with the rotating speed of a vehicle transmission shaft, for example, chinese patent CN 105757214a discloses a hydrodynamic retarder, which includes a working chamber formed by a rotor impeller and a stator impeller, an oil storage tank, a heat dissipation mechanism and a transmission shaft, a vehicle drives the rotor impeller to rotate through the transmission shaft, the rotating speed of the rotor impeller is consistent with the rotating speed of the transmission shaft, and the braking torque of the hydrodynamic retarder is generally in direct proportion to the square of the rotating speed of the rotor impeller under the condition that the braking torque coefficient, the working fluid density, the gravitational acceleration and the effective diameter of a circle are kept to be. When the vehicle climbs a slope and needs to generate a larger braking torque, the braking torque generated by the hydraulic retarder is smaller due to the fact that the vehicle speed is smaller, so that the deceleration braking effect of the hydraulic retarder on the vehicle is weakened, and the actual use requirement cannot be met; or when the vehicle runs at a high speed, the idle running loss of the hydraulic retarder is correspondingly increased due to the increase of the rotating speed of the rotor impeller.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a hydraulic speed reducer.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hydraulic speed reducer, hydraulic speed reducer and vehicle gearbox series connection, hydraulic speed reducer includes casing, first pivot, and is integrated rotor impeller, stator impeller, second pivot and speed adjusting mechanism in the casing, form the working chamber between rotor impeller and the stator impeller, the second pivot with rotor impeller links to each other, first pivot stretches into in the casing and passes through speed adjusting mechanism with the second pivot links to each other, the one end of first pivot links to each other with the output shaft of vehicle gearbox, and the looks remote site links to each other with the vehicle drive axle.
Preferably, the speed adjusting mechanism includes a first speed changing gear and a second speed changing gear, the first rotating shaft is coupled to the first speed changing gear, the second rotating shaft is coupled to the second speed changing gear, and the first speed changing gear is meshed with the second speed changing gear.
Preferably, the speed adjusting mechanism includes a first speed changing gear, a second speed changing gear, a third speed changing gear, a fourth speed changing gear and a third rotating shaft, the third rotating shaft is coupled to the third speed changing gear and the fourth speed changing gear, the first rotating shaft is coupled to the first speed changing gear, the first speed changing gear is meshed with the third speed changing gear, the second rotating shaft is coupled to the second speed changing gear, and the second speed changing gear is meshed with the fourth speed changing gear.
Preferably, the speed adjusting mechanism includes a first speed changing gear, a second speed changing gear, a third speed changing gear, a fourth speed changing gear and a clutch, the first rotating shaft is coupled to the first speed changing gear and the third speed changing gear, the second rotating shaft is coupled to the second speed changing gear and the fourth speed changing gear, the first speed changing gear is meshed with the second speed changing gear, the third speed changing gear is meshed with the fourth speed changing gear, the clutch is arranged on the second rotating shaft, and the clutch is combined with any one of the second speed changing gear and the fourth speed changing gear, or the clutch is separated from both the second speed changing gear and the fourth speed changing gear.
Preferably, a rotation speed sensor for measuring the rotation speed is arranged on the first rotating shaft and/or the second rotating shaft.
Preferably, a rotating speed sensor for measuring rotating speed is arranged on the third rotating shaft
Preferably, the working fluid circulating device further comprises a liquid storage tank for storing the working fluid and a heat dissipation mechanism for dissipating heat of the working fluid, and a circulating passage for recycling the working fluid is formed among the working cavity, the liquid storage tank and the heat dissipation mechanism.
Preferably, the working cavity is provided with a working liquid inlet and a working liquid outlet, the working liquid inlet is communicated with the liquid storage tank, the working liquid outlet is communicated with the heat dissipation mechanism, and the heat dissipation mechanism is communicated with the liquid storage tank.
Preferably, the liquid storage tank is provided with an opening for compressed air to enter or discharge, and the opening is provided with a control valve for controlling compressed air to enter or discharge.
The beneficial effects of the utility model are that
(1) The speed regulating mechanism is integrated in the shell of the hydraulic speed reducing device, so that the hydraulic speed reducing device has a speed regulating function, the rotating speed of the rotor impeller is regulated by the speed regulating mechanism, on one hand, the braking torque of the hydraulic speed reducing device can be effectively changed, the braking performance of the hydraulic speed reducing device is changed, the hydraulic speed reducing device can better perform speed reduction braking on a vehicle, and on the other hand, the idling loss of the hydraulic speed reducing device can be effectively reduced.
(2) By changing the installation mode of the hydraulic speed reducer, the hydraulic speed reducer is attached to a vehicle gearbox and connected with the vehicle gearbox in series, the axial installation size is effectively reduced, a transmission mechanism does not need to be arranged independently, and the installation cost is reduced.
Drawings
Fig. 1 is a schematic view of an installation position of a hydraulic decelerating device;
FIG. 2 is a schematic view of a hydraulic retarder unit;
fig. 3 is a schematic cross-sectional view of a hydraulic retarder according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a hydraulic speed reducer according to a first embodiment of the present invention;
fig. 5 is a schematic structural view of a hydraulic decelerating device according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a hydraulic speed reducer according to a third embodiment of the present invention.
Reference numerals: a. the hydraulic speed reducer comprises a hydraulic speed reducer, a vehicle gearbox, a vehicle drive axle, a transmission shaft, a shell, 11, a working cavity, 12, a rotating speed sensor, 20, a first rotating shaft, 21, a flange, 30, a rotor impeller, 40, a stator impeller, 50, a second rotating shaft, 60, a speed regulating mechanism, 61, a first speed changing gear, 62, a second speed changing gear, 63, a third speed changing gear, 64, a fourth speed changing gear, 65, a third transmission shaft, 66, a clutch, 70, a liquid storage tank, 80, a heat dissipation mechanism, 90 and a control valve.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
The utility model discloses a hydraulic speed reducer, attached vehicle gearbox b installs, and with vehicle gearbox b series connection, also hydraulic speed reducer an installs in an organic whole through connecting piece or other modes and vehicle gearbox b, and hydraulic speed reducer's one end and vehicle gearbox b's output shaft lug connection, it links to each other with vehicle gearbox b's output shaft to need not to pass through transmission shaft d again, the looks remote site passes through transmission shaft d or directly links to each other with vehicle transaxle c, adopt series connection's mode can effectively reduce axial installation dimension.
Referring to fig. 2 and 3, the hydraulic speed reducer disclosed in the present invention includes a housing 10, a first rotating shaft 20, a rotor impeller 30, a stator impeller 40, a second rotating shaft 50, and a speed adjusting mechanism 60, wherein the rotor impeller 30, the stator impeller 40, the second rotating shaft 50, and the speed adjusting mechanism 60 are integrated in the housing 10, the rotor impeller 30 is mounted on the second rotating shaft 50, a working chamber 11 is formed between the rotor impeller 30 and the stator impeller 40, and the working chamber 11 can be filled with working fluid such as hydraulic oil; the second rotating shaft 50 is connected with the rotor impeller 30, and the rotor impeller 30 rotates along with the rotation of the second rotating shaft 50; the first rotating shaft 20 extends into the housing 10 and is connected to the second rotating shaft 50 through the governor mechanism 60, and one end of the first rotating shaft 20 is directly connected to an output shaft of the vehicle transmission b, and the opposite end thereof is connected to an input shaft of the vehicle transaxle c through the propeller shaft d or directly connected to the input shaft of the vehicle transaxle c.
When the hydraulic speed reducer works, the vehicle gearbox b drives the first rotating shaft 30 to rotate, the first rotating shaft 30 adjusts the rotating speed of the second rotating shaft 50 through the speed adjusting mechanism 60, so that the rotating speed of the rotor impeller 30 is further adjusted, the rotating speed of the rotor impeller 30 is higher or lower than that of the transmission shaft d, the rotor impeller 30 drives the working fluid to move towards the stator impeller 40, the stator impeller 40 generates a reaction force on the working fluid, the working fluid impacts the rotor impeller 30 to form a resistance moment on the rotor impeller 30, the rotation of the rotor impeller 30 is hindered, the braking moment of the hydraulic speed reducer is finally changed, the braking performance of the hydraulic speed reducer is changed, and the hydraulic speed reducer can better brake the vehicle in a speed reducing mode.
In the embodiment, the speed ratio of the rotor impeller to the first rotating shaft is preferably 0.25-4, so that the transmission efficiency can be effectively improved.
Further, the first rotating shaft 20 is connected with an output shaft of a vehicle gearbox b through a spline, and is connected with an input shaft or a transmission shaft of a vehicle drive axle c through a flange 21, but of course, the connection can also be realized in other manners, such as a welding manner and the like.
The structure of the governor 60 in the hydrodynamic retarder will be described in detail below with reference to three embodiments, but it is needless to say that the present invention is not limited to the above three governor 60, and the governor 60 may be provided according to actual requirements, such as the number of transmission gears required and whether or not a clutch is required according to actual speed requirements.
Example one
As shown in fig. 3 and 4, the speed adjusting mechanism 60 includes a first speed changing gear 61 and a second speed changing gear 62, wherein the first rotating shaft 20 is coupled to the first speed changing gear 61, the second rotating shaft 50 is coupled to the second speed changing gear 62, and the first speed changing gear 61 is meshed with the second speed changing gear 62. In practical implementation, the first rotating shaft 20 drives the first speed-changing gear 61 to rotate, and the first speed-changing gear 61 further drives the second speed-changing gear 62 engaged with the first speed-changing gear to rotate; the second speed-changing gear 62 drives the second rotating shaft 50 to rotate, so as to drive the rotor impeller 30 to rotate, so that the rotating speed of the rotor impeller 30 can be changed under the action of the first speed-changing gear 61 and the second speed-changing gear 62, and the braking torque of the hydraulic speed reducer can be changed.
In the present embodiment, the first transmission gear 61 may be mounted on the first rotating shaft 20 by interference fit, or may be mounted on the first rotating shaft 20 by other methods, such as key connection. Similarly, the second speed-changing gear 62 can be mounted on the second rotating shaft 50 by interference fit, or can be mounted on the first rotating shaft 20 by other methods, such as key connection.
Example two
As shown in fig. 5, the governor mechanism 60 includes a first transmission gear 61, a second transmission gear 62, a third transmission gear 63, a fourth transmission gear 64, and a third rotating shaft 65, wherein the third rotating shaft 65 is coupled to the third transmission gear 63 and the fourth transmission gear 64, the first rotating shaft 20 is coupled to the first transmission gear 61, and the first transmission gear 61 is in meshed connection with the third transmission gear 63, the second rotating shaft 50 is coupled to the second transmission gear 62, and the second transmission gear 62 is in meshed connection with the fourth transmission gear 64.
In practical implementation, the first rotating shaft 20 drives the first speed-changing gear 61 to rotate, and the first speed-changing gear 61 further drives the third speed-changing gear 63 engaged with the first speed-changing gear to rotate; the second speed changing gear 62 drives the third rotating shaft 65 to rotate, and further drives the fourth speed changing gear 64 to rotate; the fourth speed-changing gear 64 further drives the second speed-changing gear 62 engaged with the fourth speed-changing gear to rotate, and the second speed-changing gear 62 drives the second rotating shaft 50 to rotate, so as to drive the rotor impeller 30 to rotate, so that the rotating speed of the rotor impeller 30 can be changed under the action of the first speed-changing gear 61, the second speed-changing gear 62, the third speed-changing gear 63 and the fourth speed-changing gear 64, and the braking torque of the hydraulic speed reducer is further changed.
In the present embodiment, the first transmission gear 61 may be mounted on the first rotating shaft 20 by interference fit, or may be mounted on the first rotating shaft 20 by other methods, such as key connection. Similarly, the second speed-changing gear 62, the third speed-changing gear 63 and the fourth speed-changing gear 64 can be disposed on the corresponding transmission shafts in an interference fit manner, or can be disposed on the corresponding transmission shafts in other manners, such as a key connection manner.
EXAMPLE III
As shown in fig. 6, the speed adjusting mechanism 60 includes a first speed changing gear 61, a second speed changing gear 62, a third speed changing gear 63, a fourth speed changing gear 64 and a clutch 66, wherein the first rotating shaft 20 is coupled with the first speed changing gear 61 and the third speed changing gear 63, the second rotating shaft 50 is coupled with the second speed changing gear 62 and the fourth speed changing gear 64, the first speed changing gear 61 is meshed with the second speed changing gear 62, and the third speed changing gear 63 is meshed with the fourth speed changing gear 64; further, a clutch 66 is provided on the second rotary shaft 50 between the second speed change gear 62 and the fourth speed change gear 64, and may be coupled to any one of the second speed change gear 62 and the fourth speed change gear 64 or may be separated from both the second speed change gear 62 and the fourth speed change gear 64. The rotor impeller 30 is caused to have different rotational speeds by engaging the clutch 66 with the second speed gear 62 or the fourth speed gear 64.
In particular implementation, when the clutch 66 is disengaged from either the second ratio gear 62 or the fourth ratio gear 64, the hydrodynamic retarder is not operated;
when the clutch 66 is engaged with the second speed-changing gear 62, the first rotating shaft 20 drives the first speed-changing gear 61 to rotate, and the first speed-changing gear 61 further drives the second speed-changing gear 62 engaged therewith to rotate; the second speed change gear 62 drives the second rotating shaft 50 to rotate, so as to drive the rotor impeller 30 to rotate, so that the rotating speed of the rotor impeller 30 can be changed under the action of the first speed change gear 61 and the second speed change gear 62, and further the braking torque of the hydraulic speed reducer is changed;
when the clutch 66 is engaged with the fourth speed-changing gear 64, the first rotating shaft 20 drives the third speed-changing gear 63 to rotate, and the third speed-changing gear 63 further drives the fourth speed-changing gear 64 engaged therewith to rotate; the fourth speed-changing gear 64 drives the second rotating shaft 50 to rotate, so as to drive the rotor impeller 30 to rotate, so that the rotating speed of the rotor impeller 30 is changed under the action of the third speed-changing gear 63 and the fourth speed-changing gear 64, and the braking torque of the hydraulic speed reducer is changed.
In this embodiment, the first speed-changing gear 61, the second speed-changing gear 62, the third speed-changing gear 63 and the fourth speed-changing gear 64 can be mounted on the corresponding rotating shafts in an interference fit manner, or can be mounted on the corresponding rotating shafts in other manners, such as a key connection manner.
Compared with the prior art, the utility model discloses an aspect makes hydraulic speed reducer have the speed governing function through integrated speed governing mechanism 60 in hydraulic speed reducer's casing 10, adjust the rotational speed of rotor impeller 30 through speed governing mechanism, on the one hand when the vehicle is in states such as climbing, accessible speed governing mechanism 60 makes the rotational speed of rotor impeller 30 improve, and then change hydraulic speed reducer's braking torque, change hydraulic speed reducer's brake performance, make hydraulic speed reducer can be better carry out speed reduction braking to the vehicle, on the other hand when the vehicle is in states such as high-speed traveling, accessible speed governing mechanism 60 makes the rotational speed of rotor impeller 30 reduce, and then reduce hydraulic speed reducer's idle running loss; meanwhile, the mounting mode of the hydraulic speed reducer is changed, so that the hydraulic speed reducer is attached to a vehicle gearbox and is connected with the vehicle gearbox in series, and the axial mounting size can be effectively reduced.
As shown in fig. 2, the hydraulic retarder further includes a rotation speed sensor 12 for measuring a rotation speed, which may be disposed on the first rotating shaft 20 and used for measuring a rotation speed of the first rotating shaft 20, may also be disposed on the second rotating shaft 50 and used for measuring a rotation speed of the second rotating shaft 50, and may also be disposed on the third rotating shaft 65 and used for measuring a rotation speed of the third rotating shaft 65, and of course, the rotation speed sensor 12 may also be disposed on each of the first rotating shaft 20, the second rotating shaft 50, and the third rotating shaft 65. When the hydraulic reduction device has a plurality of rotating shafts, the rotating speed sensor 12 may be provided on each rotating shaft, or may be set according to actual requirements, such as on a speed change gear, and the like.
Further, the hydraulic decelerating device further includes a reservoir 70 for storing the working fluid and a heat dissipation mechanism 80 for dissipating heat from the working fluid, and a circulation path for circulating the working fluid is formed among the working chamber 11, the reservoir 70, and the heat dissipation mechanism 80. Specifically, the working chamber 11 has a working fluid inlet and a working fluid outlet, wherein the working fluid inlet is communicated with the liquid storage tank 70, the working fluid outlet is communicated with the heat dissipation mechanism 80, the heat dissipation mechanism 80 is further communicated with the liquid storage tank 70, in the implementation process, the working fluid in the liquid storage tank 70 enters the working chamber 11 from the working fluid inlet, the rotor impeller 30 drives the working fluid to move so as to convert the mechanical energy into heat energy, the working fluid further enters the heat dissipation mechanism 80 from the working fluid outlet, and the heat dissipation mechanism 80 dissipates the heat of the working fluid and then finally inputs the working fluid into the liquid storage tank 70, so that the working fluid can be recycled. In this embodiment, the heat dissipation mechanism is preferably a heat exchanger.
Further, the liquid storage tank 70 is provided with an opening for the inlet or outlet of compressed air, and the opening is provided with a control valve 90 for controlling the inlet or outlet of compressed air.
The technical contents and features of the present invention have been disclosed as above, however, those skilled in the art can still make various substitutions and modifications based on the teaching and disclosure of the present invention without departing from the spirit of the present invention, therefore, the protection scope of the present invention should not be limited to the contents disclosed in the embodiments, but should include various substitutions and modifications without departing from the present invention, and should be covered by the claims of the present patent application.
Claims (10)
1. The hydraulic speed reducer comprises a shell, a first rotating shaft, a rotor impeller, a stator impeller, a second rotating shaft and a speed regulating mechanism, wherein the rotor impeller, the stator impeller, the second rotating shaft and the speed regulating mechanism are integrated in the shell, a working cavity is formed between the rotor impeller and the stator impeller, the second rotating shaft is connected with the rotor impeller, the first rotating shaft extends into the shell and is connected with the second rotating shaft through the speed regulating mechanism, one end of the first rotating shaft is connected with an output shaft of the vehicle gearbox, and the opposite end of the first rotating shaft is connected with a vehicle drive axle.
2. A hydrodynamic retarder device as claimed in claim 1, wherein the governor mechanism includes a first speed change gear and a second speed change gear, the first shaft is coupled to the first speed change gear, the second shaft is coupled to the second speed change gear, and the first speed change gear is in mesh with the second speed change gear.
3. A hydrodynamic retarder device as claimed in claim 1, wherein the governor mechanism includes a first speed change gear, a second speed change gear, a third speed change gear, a fourth speed change gear, and a third shaft, the third shaft being journalled to the third speed change gear and the fourth speed change gear, the first shaft being journalled to the first speed change gear and the first speed change gear being in mesh with the third speed change gear, the second shaft being journalled to the second speed change gear and the second speed change gear being in mesh with the fourth speed change gear.
4. A hydrodynamic retarder device according to claim 1, wherein the governor mechanism includes a first speed change gear, a second speed change gear, a third speed change gear, a fourth speed change gear, and a clutch, the first shaft is coupled to the first speed change gear and the third speed change gear, the second shaft is coupled to the second speed change gear and the fourth speed change gear, and the first speed change gear is engaged with the second speed change gear, the third speed change gear is engaged with the fourth speed change gear, the clutch is provided on the second shaft, and the clutch is coupled to any one of the second speed change gear and the fourth speed change gear, or the clutch is decoupled from both the second speed change gear and the fourth speed change gear.
5. A hydrodynamic retarder device as claimed in claim 1, wherein the rotor impeller has a speed ratio to the first shaft of 0.25-4.
6. A hydrodynamic retarder device according to claim 1, characterized in that the first and/or second shaft is provided with a rotation speed sensor for measuring the rotation speed.
7. A hydrodynamic retarder device as claimed in claim 3, wherein the third shaft is provided with a speed sensor for measuring the speed of rotation.
8. A hydrodynamic retarder device as claimed in claim 1, further comprising a reservoir for storing the working fluid and a heat dissipating mechanism for dissipating heat from the working fluid, wherein the working chamber, the reservoir and the heat dissipating mechanism define a circulation path for circulating the working fluid.
9. A hydrodynamic retarder device as defined in claim 8 wherein the working chamber has a working fluid inlet and a working fluid outlet, the working fluid inlet being in communication with the reservoir, the working fluid outlet being in communication with the heat sink mechanism, the heat sink mechanism being in communication with the reservoir.
10. A hydrodynamic retarder device as claimed in claim 8, wherein the reservoir is provided with an opening for the admission or discharge of compressed air, the opening being provided with a control valve for controlling admission or discharge of compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760719.3U CN210135185U (en) | 2019-05-24 | 2019-05-24 | Hydraulic speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920760719.3U CN210135185U (en) | 2019-05-24 | 2019-05-24 | Hydraulic speed reducer |
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| CN210135185U true CN210135185U (en) | 2020-03-10 |
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| CN201920760719.3U Active CN210135185U (en) | 2019-05-24 | 2019-05-24 | Hydraulic speed reducer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081099A (en) * | 2019-05-24 | 2019-08-02 | 苏州特速安机电科技有限公司 | A kind of fluid power deceleration device |
-
2019
- 2019-05-24 CN CN201920760719.3U patent/CN210135185U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081099A (en) * | 2019-05-24 | 2019-08-02 | 苏州特速安机电科技有限公司 | A kind of fluid power deceleration device |
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