CN112483562A - Adjustable hydraulic retarder of hydraulic transmission - Google Patents
Adjustable hydraulic retarder of hydraulic transmission Download PDFInfo
- Publication number
- CN112483562A CN112483562A CN202011466313.8A CN202011466313A CN112483562A CN 112483562 A CN112483562 A CN 112483562A CN 202011466313 A CN202011466313 A CN 202011466313A CN 112483562 A CN112483562 A CN 112483562A
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- shell
- oil
- retarder
- output shaft
- valve
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- 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
- F16D57/02—Liquid-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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides an adjustable hydrodynamic retarder of a hydrodynamic transmission, which comprises a shell; an output shaft is installed by penetrating through the shell, a stator and a rotor which are matched with each other are sleeved on the output shaft in the shell, the output shaft and the rotor are connected through splines to rotate synchronously, an oil way is arranged in the shell and is externally connected with an energy accumulator and a cooler, and a valve body is arranged on an oil way interface. The invention is arranged at the tail end of the automatic hydraulic transmission, can adjust the oil filling speed of an oil cavity of the retarder by adjusting the current of the proportional electromagnetic valve, further adjust the braking capacity of the retarder, can generate the braking torque exceeding 1500 N.m within 2 seconds, and can generate the braking torque exceeding 2700 N.m to the maximum, thereby effectively improving the economical efficiency of vehicle transportation and the driving safety of the vehicle, and reducing the conditions of frequent gear shifting and braking.
Description
Technical Field
The invention relates to an adjustable hydraulic retarder of a hydraulic transmission.
Background
The retarder is mainly used on a vehicle and is used for assisting in vehicle deceleration under the conditions of emergency braking or long downhill road conditions which are not suitable for long-time braking. The transmission system is commonly used in off-road and on-road vehicle transmission systems of heavy dump trucks, special vehicles, multipurpose engineering vehicles, high-grade buses, city buses and the like. The main types of retarder are a hydraulic turbine retarder and an electric turbine retarder. The electric turbine retarder has no contact and abrasion in use, but has a complex structure, a large volume and a large occupied space, and is not applied to vehicles; the hydraulic turbine retarder generates damping by stirring liquid flow, has a light structure, is easy to integrate and use, and simultaneously, the oil used by the hydraulic retarder can be shared with the transmission oil used by the automatic hydraulic transmission, so that the hydraulic retarder is particularly suitable for vehicles using the automatic hydraulic transmission. However, the hydraulic retarder in the prior art requires frequent gear shifting and braking, so that the economy of vehicle transportation and the driving safety are not high.
Disclosure of Invention
In order to solve the technical problem, the invention provides an adjustable hydraulic retarder of a hydraulic transmission.
The invention is realized by the following technical scheme.
The invention provides an adjustable hydrodynamic retarder of a hydrodynamic transmission, which comprises a shell; an output shaft is installed by penetrating through the shell, a stator and a rotor which are matched with each other are sleeved on the output shaft in the shell, the output shaft and the rotor are connected through splines to rotate synchronously, an oil way is arranged in the shell and is externally connected with an energy accumulator and a cooler, and a valve body is arranged on an oil way interface.
And a control valve is arranged in the valve body, fixed on the shell and used for controlling the opening and closing of the oil way.
And a proportional electromagnetic valve is arranged in the valve body, is fixed on the shell and controls the size of an oil path.
The output shaft is positioned through a bearing, an elastic cushion and a compression nut.
The control valve core, the spring and the plug are arranged in the shell and cooperate with the valve body to control the opening and closing of the oil path.
The stator, the rotor and the shell are all in a turbine blade shape.
And the valve body is also provided with a linkage valve.
The control valve core controls an oil path externally connected to the cooler.
The invention has the beneficial effects that: the brake torque of the retarder can be generated within 2 seconds and can exceed 1500 N.m, and the brake torque of the retarder can be generated to the maximum extent, so that the economy of vehicle transportation and the running safety of the vehicle are effectively improved, and the conditions of frequent gear shifting and brake braking are reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;
fig. 3 is a side view of fig. 1.
In the figure: 1-stator, 2-bearing, 3-output shaft, 4-rotor, 5-shell, 6-compression nut, 7-elastic pad, 8-bottom plate, 9-linkage valve, 10-control valve, 11-valve body, 12-cover plate, 13-control valve core, 14-spring, 15-plug and 16-proportional electromagnetic valve.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
A variable hydrodynamic retarder for a hydrodynamic transmission as shown in fig. 1 to 3, comprising a housing 5; an output shaft 3 penetrates through the shell 5, a stator 1 and a rotor 4 which are matched with each other are sleeved on the output shaft 3 in the shell 5, the output shaft 3 and the rotor 4 are connected through splines and rotate synchronously, an oil way is arranged in the shell 5 and is externally connected with an energy accumulator and a cooler, and a valve body 11 is arranged on an oil way interface.
A control valve 10 is arranged in the valve body 11, the control valve 10 is fixed on the shell 5, and the control valve 10 controls the opening and closing of the oil path.
A proportional solenoid valve 16 is installed in the valve body 11, the proportional solenoid valve 16 is fixed to the housing 5, and the proportional solenoid valve 16 controls the size of the oil path.
The output shaft 3 is positioned by the bearing 2, the elastic pad 7 and the compression nut 6.
A control valve core 13, a spring 14 and a plug 15 are arranged in the shell 5 and cooperate with the valve body 11 to control the opening and closing of the oil path.
The stator 1, the rotor 4 and the housing 5 are all in the shape of turbine blades.
And the valve body 11 is also provided with a linkage valve 9.
The control valve element 13 controls an oil path externally connected to the cooler.
Example 1
By adopting the scheme, as shown in fig. 1 to 3, an oil cavity is formed by the stator 1, the rotor 4 and the shell 5, the rotor 4 is connected with the output shaft 3 of the transmission through a spline, the rotor 4 is connected with the output shaft 3 through a spline, and the output shaft 3 is positioned through the bearing 2, the elastic pad 7 and the compression nut 6; the plug 15, the spring 14 and the control valve core 13 are arranged in the shell 5, the energy accumulator is connected with an oil filling oil path in the shell 5 through a pipeline, and the cooler is connected with the shell 5 through a pipeline.
The valve also comprises a control valve 10 and a linkage valve 9, wherein the control valve 10 and the linkage valve 9 are arranged on a valve body 11 and are connected with the shell 5 through bolts.
The proportional electromagnetic valve 16 is arranged on the valve body 11 and connected with the shell 5 through bolts, and the current of the proportional electromagnetic valve 16 can be adjusted.
When the speed changer does not work, oil does not exist in the oil cavity, the rotor 4 idles together with the output shaft 3, and hot oil from the speed changer flows back to the speed changer again after being cooled by the cooler; when the hydraulic brake works, the proportional electromagnetic valve 16 supplies power, the control oil path is communicated with the control valve 10 and the relay valve 9, the control valve 10 acts, the relay valve 9 is communicated with main pressure oil, the main pressure oil is divided into two paths, one path directly supplies oil to an oil cavity after passing through the control valve 10, and meanwhile, the external accumulator also supplies oil to the oil cavity quickly through the oil pipe, so that the braking speed is increased. The current of the proportional electromagnetic valve 16 is adjusted, so that the oil filling speed of the oil cavity can be changed, and different braking capabilities are achieved. After oil is filled in the oil cavity, the blades of the rotor 4 drive the oil to rotate, and the oil and the blades of the stator 1 and the shell 5 act to form vortex to generate braking torque which acts on the output shaft 3 connected with the rotor 4 to brake the output shaft 3. The other path of main pressure oil pushes the control valve core 13 to act, a cooling oil path originally connected with the oil outlet of the transmission is switched to enable the cooling oil path to be connected with the oil outlet, hot oil at the oil outlet of the transmission is communicated with an oil return path of the transmission through the bottom plate (8) and the cover plate 12, and at the moment, the cooler is mainly used for cooling the flowing hot oil, and the cooled oil flows back to work again.
Claims (8)
1. An adjustable hydraulic retarder of a hydraulic transmission, which comprises a shell (5), and is characterized in that: the output shaft (3) is installed after penetrating through the shell (5), the stator (1) and the rotor (4) which are matched with each other are sleeved on the output shaft (3) in the shell (5), the output shaft (3) and the rotor (4) are connected through splines and rotate synchronously, an oil way is arranged in the shell (5) and is externally connected with an energy accumulator and a cooler, and a valve body (11) is arranged on an oil way connector.
2. The variable hydrodynamic retarder of claim 1, wherein: a control valve (10) is arranged in the valve body (11), the control valve (10) is fixed on the shell (5), and the control valve (10) controls the opening and closing of an oil path.
3. The variable hydrodynamic retarder of claim 1, wherein: a proportional electromagnetic valve (16) is arranged in the valve body (11), the proportional electromagnetic valve (16) is fixed on the shell (5), and the proportional electromagnetic valve (16) controls the size of an oil path.
4. The variable hydrodynamic retarder of claim 1, wherein: the output shaft (3) is positioned through the bearing (2), the elastic pad (7) and the compression nut (6).
5. The variable hydrodynamic retarder of claim 1, wherein: a control valve core (13), a spring (14) and a plug (15) are arranged in the shell (5) and cooperate with the valve body (11) to control the opening and closing of the oil path.
6. The variable hydrodynamic retarder of claim 1, wherein: the stator (1), the rotor (4) and the shell (5) are all in a turbine blade shape.
7. The variable hydrodynamic retarder of claim 2, wherein: and a linkage valve (9) is also arranged on the valve body (11).
8. The variable hydrodynamic retarder of claim 5, wherein: the control valve core (13) controls an oil path externally connected to the cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011466313.8A CN112483562A (en) | 2020-12-14 | 2020-12-14 | Adjustable hydraulic retarder of hydraulic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011466313.8A CN112483562A (en) | 2020-12-14 | 2020-12-14 | Adjustable hydraulic retarder of hydraulic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112483562A true CN112483562A (en) | 2021-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011466313.8A Pending CN112483562A (en) | 2020-12-14 | 2020-12-14 | Adjustable hydraulic retarder of hydraulic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112483562A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754091A (en) * | 2022-01-05 | 2022-07-15 | 富奥汽车零部件股份有限公司 | Planet wheel type high-viscosity oil medium high-pressure retarder |
-
2020
- 2020-12-14 CN CN202011466313.8A patent/CN112483562A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754091A (en) * | 2022-01-05 | 2022-07-15 | 富奥汽车零部件股份有限公司 | Planet wheel type high-viscosity oil medium high-pressure retarder |
| CN114754091B (en) * | 2022-01-05 | 2023-07-04 | 富奥汽车零部件股份有限公司 | Planetary wheel type high-viscosity oil medium high-pressure retarder |
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