CN210135187U - Hydraulic speed reducer - Google Patents
Hydraulic speed reducer Download PDFInfo
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- CN210135187U CN210135187U CN201920761693.4U CN201920761693U CN210135187U CN 210135187 U CN210135187 U CN 210135187U CN 201920761693 U CN201920761693 U CN 201920761693U CN 210135187 U CN210135187 U CN 210135187U
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Abstract
The utility model discloses a hydraulic speed reducer, including casing, first pivot, and integrated rotor wheel, stator wheel, second pivot and the speed adjusting mechanism in the casing, form the working chamber between rotor wheel and the stator wheel, the second pivot links to each other with rotor wheel, and first pivot stretches into in the casing and links to each other with the second pivot through speed adjusting mechanism. The utility model discloses an at the integrated speed regulating mechanism in hydraulic speed reducer's casing, through the rotational speed of speed regulating mechanism regulation rotor impeller, can change hydraulic speed reducer's braking torque, make hydraulic speed reducer's brake performance more superior.
Description
Technical Field
The utility model belongs to the technical field of hydraulic machine technique and specifically relates to a hydraulic decelerator who is used for auxiliary vehicle braking to have the speed governing function.
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.
However, the hydraulic retarder in the prior art does not have a speed regulation function, that is, the rotation speed of the rotor impeller is kept consistent with the rotation speed of the vehicle transmission shaft, for example, chinese patent CN 105757214 a discloses a hydraulic retarder, which includes a working chamber formed by the rotor impeller and the stator impeller, an oil storage tank, a heat dissipation mechanism and a transmission shaft, the vehicle drives the rotor impeller to rotate through the transmission shaft, the rotation speed of the rotor impeller is kept consistent with the rotation speed of the transmission shaft, and the braking torque of the hydraulic retarder is generally proportional to the square of the rotation 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 the circle are kept constant. 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 decelerator with speed governing function.
In order to achieve the above object, the utility model provides a following technical scheme: a 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, and the first rotating shaft extends into the shell and passes through the speed regulating mechanism and the second rotating shaft.
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, the speed ratio of the rotor impeller to the first rotating shaft is 0.25-4.
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 rotation speed sensor for measuring rotation 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 utility model has the advantages that:
hydraulic speed reducer device through integrated speed adjusting mechanism in hydraulic speed reducer device's casing, make hydraulic speed reducer device have the speed governing function, adjust the rotational speed of rotor impeller through speed adjusting mechanism, can effectively change hydraulic speed reducer device's braking torque on the one hand, change hydraulic speed reducer device's brake performance, make that hydraulic speed reducer device can be better carry out the braking of slowing down to the vehicle, on the other hand can effectively reduce hydraulic speed reducer device's idle running loss.
Drawings
Fig. 1 is a schematic structural view of a hydrodynamic retarder device;
FIG. 2 is a schematic cross-sectional view of a hydrodynamic retarder device;
fig. 3 is a schematic structural diagram of a hydraulic speed reducer according to a first embodiment of the present invention;
fig. 4 is a schematic structural view of a hydraulic decelerating device according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a hydraulic speed reducer according to a third embodiment of the present invention.
Reference numerals: 10. the device comprises a shell, 11, a working cavity, 12, a rotating speed sensor, 20, a first rotating shaft, 30, a rotor impeller, 40, a stator impeller, 50, a second rotating shaft, 60, a speed regulating mechanism, 61, a first speed change gear, 62, a second speed change gear, 63, a third speed change gear, 64, a fourth speed change gear, 65, a third rotating 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 reduction device, through integrated speed regulating mechanism in the casing, make rotor impeller influence its slew velocity (turning moment) under the resistance of working solution outside, still further through the rotational speed of speed regulating mechanism regulation rotor impeller for hydraulic speed reduction device still has the function of speed governing when providing hydraulic speed reduction.
Referring to fig. 1 and 2, the disclosed hydraulic speed reducer device includes a housing 10, a first rotating shaft 20, and a rotor impeller 30, a stator impeller 40, a second rotating shaft 50 and a speed adjusting mechanism 60 integrated in the housing 10. The rotor impeller 30 is mounted on the second rotating shaft 50, a working cavity 11 is formed between the stator impeller 40 and the rotor impeller 30, and the working cavity 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 shaft 20 extends into the housing 10 and is connected to the second shaft 50 via a governor mechanism 60.
During operation, the first rotating shaft 20 adjusts the rotating speed of the second rotating shaft 50 through the speed adjusting mechanism 60, so as to further adjust the rotating speed of the rotor impeller 30, so that the rotating speed of the rotor impeller 30 is higher or lower than the rotating speed of the first rotating shaft 20, 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 resisting moment on the rotor impeller 30, the rotation of the rotor impeller 30 is hindered, finally, the braking moment of the hydraulic speed reducer is 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 30 to the first rotating shaft 20 is preferably 0.25-4, so that the transmission efficiency can be effectively improved.
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. 2 and fig. 3, 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. 4, 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 rotates to further drive 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. 5, 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 to the first speed changing gear 61 and the third speed changing gear 63, the second rotating shaft 50 is coupled to 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 integrates the speed regulating mechanism 60 in the shell 10 of the hydraulic speed reducer, so that the hydraulic speed reducer has the speed regulating function, the rotating speed of the rotor impeller 30 is regulated by the speed regulating mechanism, on one hand, when the vehicle is in the states of climbing and the like, the rotating speed of the rotor impeller 30 can be improved by the speed regulating mechanism 60, and then the braking torque of the hydraulic speed reducer is changed, the braking performance of the hydraulic speed reducer is changed, so that the hydraulic speed reducer can better decelerate and brake the vehicle, on the other hand, when the vehicle is in the states of high-speed running and the like, the rotating speed of the rotor impeller 30 can be reduced by the speed regulating mechanism 60, and further the idle running loss of the hydraulic speed reducer is reduced, meanwhile, the hydraulic speed reducer can be independently installed between the vehicle gearbox and the vehicle drive axle, and can also be attached to the, the installation mode is flexible.
As shown in fig. 1, the hydraulic decelerating device of the present invention further includes a rotation speed sensor 12 for measuring a rotation speed, which can be disposed on the first rotating shaft 20 for measuring the rotation speed of the first rotating shaft 20, and also can be disposed on the second rotating shaft 50 for measuring the rotation speed of the second rotating shaft 50, and also can be disposed on the third rotating shaft 65 for measuring the rotation speed of the third rotating shaft 65, and of course, the rotation speed sensor 12 can be disposed on 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, an opening for the inlet or outlet of compressed air is provided on the reservoir 70, and a control valve 90 for controlling the inlet or outlet of compressed air is provided at the opening.
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 is characterized by comprising 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 and the second rotating shaft are integrated in the shell, the speed regulating mechanism is used for regulating the rotating speed of the rotor impeller, a working cavity is formed between the rotor impeller and the stator impeller, the second rotating shaft is connected with the rotor impeller, and the first rotating shaft extends into the shell and passes through the speed regulating mechanism to be connected with the second rotating shaft.
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 |
|---|---|---|---|
| CN201920761693.4U CN210135187U (en) | 2019-05-24 | 2019-05-24 | Hydraulic speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920761693.4U CN210135187U (en) | 2019-05-24 | 2019-05-24 | Hydraulic speed reducer |
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| CN210135187U true CN210135187U (en) | 2020-03-10 |
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| CN201920761693.4U Active CN210135187U (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 |
|---|---|---|---|---|
| CN110081097A (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 CN201920761693.4U patent/CN210135187U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081097A (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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