CN217784073U - Hydraulic retarder capable of reducing no-load loss - Google Patents
Hydraulic retarder capable of reducing no-load loss Download PDFInfo
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- CN217784073U CN217784073U CN202221984586.6U CN202221984586U CN217784073U CN 217784073 U CN217784073 U CN 217784073U CN 202221984586 U CN202221984586 U CN 202221984586U CN 217784073 U CN217784073 U CN 217784073U
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Abstract
The utility model discloses a reduce empty load loss's hydraulic retarber, include: a stator, a rotor and oil are arranged in the shell; the rotor shaft is fixedly connected with the rotor; the rotor shaft high-gear and the rotor shaft low-gear are sleeved on the rotor shaft in a non-uniform manner; the output shaft low-gear and the output shaft high-gear are fixedly sleeved on the output shaft of the gearbox and are respectively meshed with the rotor shaft low-gear and the rotor shaft high-gear; the sliding sleeve is sleeved on the rotor shaft and can only axially move, and the sliding sleeve can be selectively meshed with the high-gear of the rotor shaft or the low-gear of the rotor shaft; the shifting fork is connected with the sliding sleeve and is used for driving the sliding sleeve to move; the cylinder comprises a first piston and a second piston, so that a plurality of working cylinders are formed in the cylinder; the air source is selectively connected with a plurality of working cylinders; the piston rod of the first piston can be selectively contacted with the second piston, and the piston rod of the second piston is connected with the shifting fork. The utility model has the characteristics of reduce idle running loss and improve braking power.
Description
Technical Field
The utility model relates to a hydraulic retarber technical field, more specifically, the utility model relates to a reduce hydraulic retarber of no-load loss.
Background
The hydraulic retarder is an auxiliary braking device, and under the working conditions of long downhill and the like requiring long-time or high-strength braking, the braking efficiency is reduced or the braking is failed in a common braking mode due to the heating of a brake. The hydraulic retarder is adopted for auxiliary braking, so that the heat fading phenomenon of the brake can be effectively reduced.
Most carry on among hydraulic retarber's the car, because the rotor links to each other with the retarber axle, even under the unloaded condition of hydraulic retarber, the air flow back of retarber working chamber holds the oil storage chamber, nevertheless can have a large amount of gas in the working chamber, gas also can form the brake force that is similar to fluid at the working chamber during operation under the drive of rotor, the retarber produces higher no-load loss, the rotor still passes through gear connection with the output shaft this moment, transmission brake force, the reaction is on the output shaft, produce power loss, cause vehicle power not enough easily, whole car power loss scheduling problem, so guarantee that the loss of no hydraulic retarber is the problem of waiting to solve urgently under the empty condition of car.
In the patent of a hydraulic retarder working cavity structure with a separable stator and rotor, a pair of inner and outer oblique splines which are matched with each other are utilized to realize the axial movement of a rotor by means of the axial force generated by the oblique splines, and when the hydraulic retarder is in an idle state, the distance between the rotor and the stator is increased, so that the aim of reducing idle loss is fulfilled.
In the patent of a rotor detachable hydraulic retarder, when the brake is released, the driving force is removed, a meshing gear is separated from a rotor under the action of a separation spring and returns to a left positioning position, the rotor does not rotate with a retarder shaft any more, the rotor runs in a no-load mode, and the loss caused by the hydraulic retarder can be reduced.
In the related research of reducing the loss of the hydraulic retarder in the idle state at present, most of the related researches can not completely stop the rotor, but reduce the loss by increasing the distance between the rotor and the stator, and the like, but only under the condition that the rotor is completely stopped, the low loss of the hydraulic retarder in the idle state can be really realized.
And when the vehicle is driven at low speed, the rotating speed of the output shaft is low, so that the rotating speed transmitted to the retarder rotor is also low, the braking power of the hydraulic retarder is insufficient, the braking efficiency is reduced, and sufficient braking force cannot be generated for auxiliary braking.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a reduced idle load loss's hydraulic retarber has been developed, and the power transmission of whole car transmission system output shaft of optional interrupt or intercommunication and retarber reduces the idle load loss of retarber.
The utility model provides a technical scheme does:
a hydrodynamic retarder for reducing no-load losses, comprising:
the motor comprises a shell, a stator, a rotor and oil liquid, wherein the stator, the rotor and the oil liquid are arranged in the shell;
a rotor shaft fixedly connected to the rotor;
the rotor shaft high-gear is sleeved on the rotor shaft in an empty way;
the rotor shaft low-gear is sleeved on the rotor shaft in an empty mode;
the output shaft low-gear is fixedly sleeved on the output shaft of the gearbox and is meshed with the rotor shaft low-gear;
the output shaft high-gear is fixedly sleeved on the output shaft of the gearbox and is meshed with the rotor shaft high-gear;
the sliding sleeve can be sleeved on the rotor shaft in an axially movable mode and can be selectively meshed with the rotor shaft high-gear or the rotor shaft low-gear;
the shifting fork is connected with the sliding sleeve and is used for driving the sliding sleeve to move;
the cylinder comprises a first piston and a second piston, so that the cylinder is sequentially divided into a first working cylinder, a second working cylinder and a third working cylinder;
the air source is selectively connected with the first working cylinder, the second working cylinder and/or the third working cylinder;
the piston rod of the first piston can be selectively contacted with the second piston, and the piston rod of the second piston is connected with the shifting fork.
Preferably, the method further comprises the following steps:
an oil storage chamber fixed outside the housing;
the oil inlet pipeline is arranged between the oil storage cavity and the shell;
a check valve disposed between the oil storage chamber and the housing;
the air outlet end of the air inlet and outlet valve group is connected with the oil storage cavity, and the air inlet end of the air inlet and outlet valve group is connected with an air source;
the air outlet end of the air inlet and outlet valve group and the inlet of the oil inlet pipeline are respectively arranged on two sides of the oil storage cavity.
Preferably, the method further comprises the following steps:
and the spring steel ball is arranged on the shifting fork and is used for self-locking the shifting fork.
Preferably, the method further comprises the following steps:
and the first two-position three-way valve is arranged between the air source and the first working cylinder.
Preferably, the method further comprises the following steps:
and the second two-position three-way valve is arranged between the air source and the second working cylinder.
Preferably, the method further comprises the following steps:
and the third two-position three-way valve is arranged between the air source and the third working cylinder.
Preferably, the method further comprises:
and the position sensor is arranged on the shell and used for detecting the position of the sliding sleeve.
Preferably, the method further comprises the following steps:
and the retarder manager is connected with the CAN bus, the position sensor, the first two-position three-way valve, the second two-position three-way valve, the third two-position three-way valve and the air inlet and exhaust valve bank and is used for transmitting signals.
Beneficial effect:
the utility model provides a reduce hydraulic retarber of no-load loss through setting up the sliding sleeve, interrupts the power transmission of output shaft and retarber, has reduced the idle running loss when the retarber is out of work by a wide margin, has reduced whole car oil consumption.
Drawings
Fig. 1 is the structure schematic diagram of the height adjusting device of the hydraulic retarder for reducing the no-load loss.
Fig. 2 is a schematic structural view of the cylinder of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1, the utility model provides a pair of reduce no-load loss's hydraulic retarber includes:
The housing 110 has a rotor 121 and a stator 122 inside, the stator is fixed on the housing 110, the rotor 121 is rotatably disposed at one side of the stator 122, and the rotor shaft 131 is fixedly connected with the rotor 121.
A rotor shaft high-gear 132 and a rotor shaft low-gear 133 are sleeved on the rotor shaft 131 in an empty manner.
An output shaft high gear 142 and an output shaft low gear 143 are fixedly connected to the transmission system output shaft 141, the output shaft high gear 142 is meshed with the rotor shaft high gear 132, and the output shaft low gear 143 is meshed with the rotor shaft low gear 133.
The sliding sleeve 134 is sleeved on the rotor shaft 131 through an inner spline, so that the sliding sleeve 134 can move axially on the rotor shaft 131, and gear structures are arranged at two ends of the outer side of the sliding sleeve 134, and the gear structures are selectively engaged with the rotor shaft high-gear 132 or the rotor shaft low-gear 133 and are in a neutral gear when the retarder does not work.
As shown in fig. 2, the cylinder 160 includes a first piston 161 and a second piston 162, a piston rod of the first piston 161 selectively contacts with the second piston 162, that is, the first piston 161 and the second piston 162 are not fixed, a first working cylinder is disposed between the first piston 161 and a cylinder wall, a second working cylinder is disposed between the first piston 161 and the second piston 162, and a third working cylinder is disposed between the second piston 162 and the cylinder wall.
The first two-position three-way valve 152 is arranged between the air source 151 and the first working cylinder, the second two-position three-way valve 153 is arranged between the air source 151 and the second working cylinder, the third two-position three-way valve 154 is arranged between the air source 151 and the third working cylinder, and the air inlet and the air outlet of the air cylinder 160 are adjusted by the first two-position three-way valve 152, the second two-position three-way valve 153 and the third two-position three-way valve 154.
The shifting fork 170 is connected with the second piston 162 and the sliding sleeve 134 and driven by the cylinder 160 to further drive the sliding sleeve 134 to move, and the shifting fork 170 is provided with a spring steel ball 171 to realize self-locking of the shifting fork 170.
The gas source 151 is a vehicle-mounted gas source.
The oil storage cavity 181 is fixed on the outer side of the housing 110, retarder oil is filled in the cavity of the oil storage cavity 181, and the oil inlet pipeline 182 is arranged between the oil storage cavity 181 and the housing 110; a check valve 183 is provided between the reservoir chamber 181 and the housing 110; the end of giving vent to anger of air inlet and exhaust valves 184 with oil storage chamber 181 is connected, and the inlet end is connected with air supply 151, the end of giving vent to anger of air inlet and exhaust valves 184 sets up respectively with the entry of oil inlet pipe 182 the both sides of oil storage chamber 181, and the pressure of advancing the oil extraction is realized by air inlet and exhaust valves 184, through admitting air with retarber oil through oil inlet pipe 182 impress in casing 110, through the exhaust with retarber oil through check valve 183 discharge back to oil storage chamber 181.
A position sensor 192 is arranged outside the housing 110 and used for detecting the position of the sliding sleeve 134; the retarder manager 191 receives and processes speed signals from the position sensor 192 and the CAN bus, and manages the opening and closing of the first two-position three-way valve 152, the second two-position three-way valve 153 and the third two-position three-way valve 154 and the working states and pressures of the intake and exhaust valve group 184.
The utility model provides a pair of reduce no-load loss's hydraulic retarber's working process includes following step:
step one, acquiring a speed signal and a synchronizer position signal (a sliding sleeve position signal) of a vehicle through a CAN bus and a position sensor;
step two, when the vehicle does not need auxiliary braking of a retarder in the running process, the rotor shaft high-gear and the rotor shaft low-gear idle run under the driving of the output shaft high-gear and the output shaft low-gear, the displacement of the air cylinder is in a middle position, and the sliding sleeve is located in a middle position and is not meshed with the rotor shaft high-gear or the rotor shaft low-gear, so that torque is not transmitted, and extra no idle load loss is generated;
when the vehicle needs the auxiliary brake, the driver opens the retarder auxiliary brake function, opens the retarder manager, and the retarder manager sends operating command to the exhaust valve group, and the exhaust valve group makes the retarder oil get into the casing to the gas injection of oil storage chamber top, and the retarder manager judges the current driving state of vehicle according to the speed signal that the CAN bus transmitted simultaneously, sends corresponding operating command to the electromagnetism valves:
if v is less than 45km/h, the vehicle is in a low-speed gear working condition, the retarder manager regulates the opening of the second two-position three-way valve and keeps the third two-position three-way valve closed, the air cylinder moves to reach a low-speed gear position, the air cylinder pushes the shifting fork to move, so that the sliding sleeve and the rotor shaft low-speed gear are meshed with each other, the shifting fork realizes self locking through a spring steel ball, the rotor shaft has a large speed increasing ratio relative to the output shaft, the rotor starts to rotate to stir working oil, further, the braking torque to the output shaft is generated, and the retarder enters a working state;
if v is more than or equal to 45km/h, the vehicle is in a high-speed gear working condition, the retarder manager adjusts the first two-position three-way valve to be closed, the second two-position three-way valve is closed, the third two-position three-way valve is opened, the air cylinder moves to reach a high-speed gear position, the air cylinder pushes the shifting fork to move, the sliding sleeve and the rotor shaft high-speed gear are meshed with each other, the shifting fork realizes self locking through the spring steel ball, the rotor starts to rotate to stir working oil, then braking torque to the output shaft is generated, and the retarder enters a working state.
Wherein v is the speed of the vehicle;
when auxiliary braking is finished and the displacement of the cylinder returns to a middle position from a low-gear position, the retarder manager adjusts the opening of the first two-position three-way valve, the second two-position three-way valve is closed, and the third two-position three-way valve is opened;
when the cylinder returns to the middle position from the high-speed gear position, the retarder manager adjusts the first two-position three-way valve to be opened, the second two-position three-way valve to be closed and the third two-position three-way valve to be closed.
The utility model relates to a reduce hydraulic retarber of idle load loss of development, through setting up the sliding sleeve, interrupt the power transmission of output shaft and retarber, reduced the idle running loss when the retarber is out of work by a wide margin, reduced whole car oil consumption.
While the embodiments of the invention have been described above, it is not intended to be limited to the specific embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, and to such extent that such modifications are possible without departing from the broad scope of the appended claims.
Claims (8)
1. A hydrodynamic retarder for reducing no-load losses, comprising:
the motor comprises a shell, a stator, a rotor and oil liquid, wherein the stator, the rotor and the oil liquid are arranged in the shell;
a rotor shaft fixedly connected to the rotor;
the rotor shaft high-gear is sleeved on the rotor shaft in an empty way;
the rotor shaft low-gear is sleeved on the rotor shaft in an empty mode;
the output shaft low-gear is fixedly sleeved on the output shaft of the gearbox and is meshed with the rotor shaft low-gear;
the output shaft high-gear is fixedly sleeved on the output shaft of the gearbox and is meshed with the rotor shaft high-gear;
the sliding sleeve can be sleeved on the rotor shaft in an axially movable mode and can be selectively meshed with the rotor shaft high-gear or the rotor shaft low-gear;
the shifting fork is connected with the sliding sleeve and is used for driving the sliding sleeve to move;
the cylinder comprises a first piston and a second piston, so that the cylinder is sequentially divided into a first working cylinder, a second working cylinder and a third working cylinder;
the air source is selectively connected with the first working cylinder, the second working cylinder and/or the third working cylinder;
the piston rod of the first piston can be selectively contacted with the second piston, and the piston rod of the second piston is connected with the shifting fork.
2. A hydrodynamic retarder for reducing idling losses according to claim 1, characterized in that it further comprises:
an oil storage chamber fixed outside the housing;
the oil inlet pipeline is arranged between the oil storage cavity and the shell;
a check valve disposed between the oil storage chamber and the housing;
the air outlet end of the air inlet and outlet valve group is connected with the oil storage cavity, and the air inlet end of the air inlet and outlet valve group is connected with an air source;
the air outlet end of the air inlet and outlet valve group and the inlet of the oil inlet pipeline are respectively arranged on two sides of the oil storage cavity.
3. A hydrodynamic retarder for reducing empty load losses according to claim 2, characterized in that it further comprises:
and the spring steel ball is arranged on the shifting fork and is used for self-locking the shifting fork.
4. A hydrodynamic retarder for reducing empty load losses according to claim 3, characterized in that it further comprises:
and the first two-position three-way valve is arranged between the air source and the first working cylinder.
5. A hydrodynamic retarder for reducing empty load losses according to claim 4, characterized in that it further comprises:
and the second two-position three-way valve is arranged between the air source and the second working cylinder.
6. A hydrodynamic retarder for reducing empty load losses according to claim 5, characterized in that it further comprises:
and the third two-position three-way valve is arranged between the air source and the third working cylinder.
7. A hydrodynamic retarder for reducing idling losses according to claim 6, characterized in that it further comprises:
and the position sensor is arranged on the shell and used for detecting the position of the sliding sleeve.
8. A hydrodynamic retarder for reducing idling losses according to claim 7, characterized in that it further comprises:
and the retarder manager is connected with the CAN bus, the position sensor, the first two-position three-way valve, the second two-position three-way valve, the third two-position three-way valve and the air inlet and exhaust valve bank and is used for transmitting signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221984586.6U CN217784073U (en) | 2022-07-29 | 2022-07-29 | Hydraulic retarder capable of reducing no-load loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221984586.6U CN217784073U (en) | 2022-07-29 | 2022-07-29 | Hydraulic retarder capable of reducing no-load loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217784073U true CN217784073U (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221984586.6U Active CN217784073U (en) | 2022-07-29 | 2022-07-29 | Hydraulic retarder capable of reducing no-load loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217784073U (en) |
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2022
- 2022-07-29 CN CN202221984586.6U patent/CN217784073U/en active Active
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