CN107458387A - Hydraulic pressure for electro-hydraulic railcar aids in acceleration system - Google Patents
Hydraulic pressure for electro-hydraulic railcar aids in acceleration system Download PDFInfo
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- CN107458387A CN107458387A CN201710687442.1A CN201710687442A CN107458387A CN 107458387 A CN107458387 A CN 107458387A CN 201710687442 A CN201710687442 A CN 201710687442A CN 107458387 A CN107458387 A CN 107458387A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
- B61C9/42—Transmission systems in or for locomotives or motor railcars with electric motor propulsion hydraulic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
The invention discloses a kind of hydraulic pressure for electro-hydraulic railcar to aid in acceleration system, employ main hydraulic system and hydraulic accumulation energy the system thinking that fuel feeding accelerates startup, servo-motor and variable servo-motor to drive vehicle bridge jointly simultaneously, power consumption when reducing the acceleration time using hydraulic accumulation energy auxiliary acceleration, and reducing Acceleration of starting；Vehicle bridge is driven jointly using servo-motor and variable displacement motor, reduces main system pressure, and the installed power of complete machine is reduced while increasing climbing capacity.Compared with prior art, the present invention has good Acceleration of starting performance, the peak power of motor when reducing time and the Acceleration of starting of Acceleration of starting；The installed power of complete machine is reduced while increasing climbing capacity, reduces the power consumption of motor, and improve course continuation mileage.
Description
Technical field
The present invention relates to a kind of hydraulic pressure for electro-hydraulic railcar to aid in acceleration system, and the system can realize two functions：
Auxiliary Track car Acceleration of starting, the peak power of motor when reducing Acceleration of starting time and Acceleration of starting；Auxiliary Track car is climbed
Slope accelerates, and the installed power of complete machine is reduced while increasing climbing capacity, reduces the power consumption of motor.
Background technology
Railcar is the important machine in rail vehicles type, is mainly used in construction of railway project construction and operation dimension
Operation is protected, is played an important role in the process of construction of the track traffic such as general fast railway, high-speed railway and subway, light rail.
In view of reasons such as cost and technology maturities, diesel engine is main prime mover form of current track car, diesel oil track
Car uses mechanical gear box or hydraulic transmission box speed governing, and low-speed characteristic is poor and overall efficiency is low, can not reclaim braking
During energy.Particular job environment based on subway tunnel, the discharge of diesel engine receive great challenge, have expedited the emergence of electricity
The market demand of power railcar.Power track car carries out speed governing using variable voltage variable frequency controlled motor rotating speed, although can be made
The electricity recovery of energy, but the reasons such as accumulator capacity are limited by, utilization rate is relatively low.Other power track car still suffers from startup and added
The shortcomings of power consumption is big when fast, the Acceleration of starting time is long, course continuation mileage is short, installed power is high.Therefore installed power is reduced, startup adds
Motor peak power and acceleration time are the major technique upgrading directions of the vehicle when fast.
The content of the invention
The purpose of the present invention is that to solve the above problems and provides a kind of hydraulic pressure for electro-hydraulic railcar and aid in
Acceleration system, using hydraulic accumulation energy auxiliary power railcar Acceleration of starting, installed power, Acceleration of starting time are reduced well
And accelerate when motor peak power, greatly improve course continuation mileage.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of hydraulic pressure for electro-hydraulic railcar aids in acceleration system, including controller, motor, variable pump, the second cut-off
Valve, the first high pressure accumulator, the 3rd check valve, the 4th check valve, the second proportioning valve, low pressure accumulator, the first stop valve, variable
Servo-motor, variable displacement motor, electromagnetic clutch, energy recovery valve block, the second high pressure accumulator, the 3rd stop valve, pressure-reducing valve,
Two check valves, the first proportioning valve, overflow valve, the first check valve, vehicle bridge, the reducing gear being arranged in vehicle bridge, it is arranged on deceleration
Case is moved in the conjunction of mechanism torque input；
The power intake of motor and variable pump connects, controller while control terminal, the second ratio with the first proportioning valve
The control terminal of valve and the control terminal electrical connection of variable servo-motor, the torque output shaft of variable displacement motor and the first torque for closing dynamic case
Axis connection is inputted, the torque output shaft of variable servo-motor is connected with closing the second torque input shaft of dynamic case by electromagnetic clutch
Connect；
Variable pump, the first check valve, the hydraulic fluid port of energy recovery valve block and variable displacement motor are sequentially connected and form closed circuit,
And overflow valve is set in the loop as safety valve；
Second high pressure accumulator, the 3rd stop valve, pressure-reducing valve, the second proportioning valve, variable servo-motor, the first stop valve and
The hydraulic fluid port of low pressure accumulator is sequentially connected in series；
First high pressure accumulator, the second stop valve, the first proportioning valve, the hydraulic fluid port of the second check valve are sequentially connected in series；
Between oil circuit, variable servo-motor and the first stop valve between the oil inlet and variable displacement motor oil-out of variable pump
Oil circuit intersect and connect；
Energy recovery valve block is provided with an input oil port and two output oil ports, the input oil port of the second check valve and the
One proportioning valve connects, the output oil port of the second check valve, the output oil port of the first check valve, the input oil port of overflow valve and energy
The input oil port connection of recovery valve block, the first output oil port of energy recovery valve block connect with the input oil port of variable displacement motor, energy
Amount the second output oil port of recovery valve block, the input oil port of the 3rd check valve, the input oil port of the 4th check valve connect；
The output oil port of 3rd check valve is accessed in the oil circuit between the second stop valve and the first proportioning valve, the 4th check valve
Output oil port access in the oil circuit between the 3rd stop valve and pressure-reducing valve.
Further, the pressure of the variable servo-motor oil inlet is controlled by adjusting the valve port opening of pressure-reducing valve
System regulation.
Further, the valve port opening of second proportioning valve is controlled regulation by controller.
Further, the valve port opening of first proportioning valve is controlled regulation by controller.
Further, the discharge capacity of the variable servo-motor is controlled regulation by controller.
The beneficial effects of the present invention are：
Compared with prior art, the present invention there is good Acceleration of starting performance, reduce Acceleration of starting time and
The peak power of motor during Acceleration of starting；The installed power of complete machine is reduced while increasing climbing capacity, reduces motor
Power consumption, and improve course continuation mileage.
Brief description of the drawings
Fig. 1 is the structure principle chart that the hydraulic pressure of the present invention for electro-hydraulic railcar aids in acceleration system；
In figure：Motor 1；Variable pump 2；Second stop valve 3；First high pressure accumulator 4；3rd check valve 5；4th check valve
6；Second proportioning valve 7；Low pressure accumulator 8；First stop valve 9；Variable servo-motor 10；Variable displacement motor 11；Electromagnetic clutch 12；
Close dynamic case 13；Vehicle bridge 14；Reducing gear 15；Energy recovery valve block 16；Second high pressure accumulator 17；3rd stop valve 18, decompression
Valve 19；Second check valve 20；First proportioning valve 21；Overflow valve 22；First check valve 23；Controller 24.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
With reference to shown in Fig. 1, the present invention includes controller (24), motor (1), variable pump (2), the second stop valve (3), first
High pressure accumulator (4), the 3rd check valve (5), the 4th check valve (6), the second proportioning valve (7), low pressure accumulator (8), first section
Only valve (9), variable servo-motor (10), variable displacement motor (11), electromagnetic clutch (12), energy recovery valve block (16), second high
Press accumulator (17), the 3rd stop valve (18), pressure-reducing valve (19), the second check valve (20), the first proportioning valve (21), overflow valve
(22), the first check valve (23), vehicle bridge (14), the reducing gear (15) being arranged in vehicle bridge (14), be arranged on reducing gear
(15) case (13) is moved in the conjunction of torque input；
Motor (1) is connected with the power intake of variable pump (2), controller (24) and meanwhile with the control of the first proportioning valve (21)
End, the control terminal of the second proportioning valve (7) and the control terminal electrical connection of variable servo-motor (10) processed, the torque of variable displacement motor (11)
Output shaft is connected with closing the first torque input shaft of dynamic case (13), and the torque output shaft of variable servo-motor (10) is with closing dynamic case
(13) the second torque input shaft is connected by electromagnetic clutch (12)；
Variable pump (2), the first check valve (23), the hydraulic fluid port of energy recovery valve block (16) and variable displacement motor (11) are sequentially connected
And closed circuit is formed, and set overflow valve (22) to be used as safety valve in the loop；
Second high pressure accumulator (17), the 3rd stop valve (18), pressure-reducing valve (19), the second proportioning valve (7), variable auxiliary horse
Hydraulic fluid port up to (10), the first stop valve (9) and low pressure accumulator (8) is sequentially connected in series；
First high pressure accumulator (4), the second stop valve (3), the first proportioning valve (21), the second check valve (20) hydraulic fluid port according to
Secondary series connection；
Oil circuit, variable servo-motor (10) between the oil inlet and variable displacement motor (11) oil-out of variable pump (2) and the
Oil circuit between one stop valve (9) intersects and connected；
Energy recovery valve block (16) is provided with an input oil port and two output oil ports, the input of the second check valve (20)
Hydraulic fluid port connects with the first proportioning valve (21), the output oil port of the second check valve (20), the output oil port of the first check valve (23), overflows
The input oil port of stream valve (22) connects with the input oil port of energy recovery valve block (16), the first output of energy recovery valve block (16)
Hydraulic fluid port connects with the input oil port of variable displacement motor (11), the second output oil port of energy recovery valve block (16), the 3rd check valve (5)
Input oil port, the input oil port of the 4th check valve (6) connects；
The output oil port of 3rd check valve (5) is accessed in the oil circuit between the second stop valve (3) and the first proportioning valve (21),
The output oil port of 4th check valve (6) is accessed in the oil circuit between the 3rd stop valve (18) and pressure-reducing valve (19).
In the present invention, motor (1), variable pump (2), the first check valve (23), variable displacement motor (11), the first stop valve (9)
Driving circuit is formed with low pressure accumulator (8).Auxiliary speed-up loop is formed by two parts：A part is by the first high pressure accumulator
(4), the second stop valve (3), the first proportioning valve (21) and the second check valve (20) composition；Another part is by the second high pressure accumulator
(17), the 3rd stop valve (18), pressure-reducing valve (19), the second proportioning valve (7), variable servo-motor (10) and electromagnetic clutch (12)
Composition.
Second proportioning valve (7), the first proportioning valve (21) and variable servo-motor (10) are controlled by controller (24) and adjusted
Section, the pressure of variable servo-motor (10) oil inlet are controlled regulation by adjusting the valve port opening of pressure-reducing valve (19).
Pressure-reducing valve (19) valve port opening can be adjusted according to the change of the second high pressure accumulator (17) outlet pressure, come
Control variable servo-motor (10) inlet pressure constant, so as to control the driving torque of servo-motor (10) constant；Second ratio
Valve (7) its valve port opening can be adjusted using controller (24) according to required different speeds, to control variable to aid in horse
It is constant up to (10) entrance fluid flow, so as to control variable servo-motor (10) invariablenes turning speed；Variable servo-motor (10) can root
Its discharge capacity is adjusted using controller (24) according to different gradient, so as to adapt to the different climbing gradients.First proportioning valve (21) can
Its valve port opening is adjusted using controller (24), (driven back to control the first high pressure accumulator (4) to be discharged into main system
Road) fluid flow it is constant.
3rd cut-off of second stop valve (3), the second high pressure accumulator (17) entrance of the first high pressure accumulator (4) entrance
Valve (18), first stop valve (9) of low pressure accumulator (8) entrance are hand-operated valve, are mainly used in the off-load operation of system overhaul.
Overflow valve (22) is used as safety valve, and overflow is opened when load exceedes preset value, carries out overload protection, system pressure is no longer increased
Add.
The operation principle of the present invention is as follows：
When vehicle is straight road or small ramp Acceleration of starting, electromagnetic clutch (12) disconnects, and the first proportioning valve (21) right position obtains
Electricity, the first high pressure accumulator (4) discharge hydraulic oil through the second stop valve (3), the first proportioning valve (21), the second check valve (20) with
The high-voltage oil liquid of variable pump (2) output converges common driving variable displacement motor (11) and accelerates rotation, completes straight road accelerating mode.Its
In, the first proportioning valve (21) valve port opening is controlled by controller (24), so as to ensure that the first high pressure accumulator (4) is discharged into
The fluid flow of main system is constant.
Low-grade Acceleration of starting terminates after entering at the uniform velocity operating mode, and the first high pressure accumulator (4) still discharges the height of constant flow rate
Force feed, converge jointly with main system oil circuit to drive variable displacement motor (11) to be rotated with constant speed.First high pressure accumulator (4)
After fluid discharges, the first proportioning valve (21) is in Median Function, and valve port is closed, and only gives variable displacement motor by variable pump (2)
(11) fuel feeding, at the uniform velocity operating mode is completed.By increasing variable pump (2) or reducing the discharge capacity of variable displacement motor (11) within the specific limits
(driving torque is more than load torque) realizes that high tap position accelerates.When slowing down with damped condition, the power supply of cut-out motor (1), variable
Pump (2) is stopped, and variable displacement motor (11) is operated in pump condition, on the one hand gives the first high-voltage energy-storage through energy recovery valve block (16)
Device (4) and the second high pressure accumulator (17) topping up, recovery braking energy；On the other hand controlled and become by energy recovery valve block (16)
Measure motor (11) inlet outlet pressure differential, there is provided braking torque, realize fast braking.
During vehicle steep gradient Acceleration of starting, because load torque is very big, electromagnetic clutch (12) engagement, the second proportioning valve
(7) left position obtains electric, and the second high pressure accumulator (17) discharges hydraulic oil through the 3rd stop valve (18), pressure-reducing valve (19), the second ratio
Valve (7) flows into variable servo-motor (10), finally flows back to low pressure accumulator (8) through the first stop valve (9).Wherein, the second high pressure
Accumulator (17) gradually reduces with the release of fluid, its outlet pressure, controls variable to aid in by pressure-reducing valve (19) (definite value)
Motor (10) inlet pressure is constant, so as to ensure that driving torque caused by variable servo-motor (10) is constant, can separately pass through control
Device (23) processed come adjust the second proportioning valve (7) valve port opening control flow into servo-motor in fluid flow it is constant, so as to protect
Railcar Acceleration of starting is demonstrate,proved to a certain constant speed.Driving torque is through electromagnetic clutch caused by variable servo-motor (10)
(12), close dynamic case (13) and close dynamic common driving vehicle bridge (14) with variable displacement motor (11), because variable servo-motor (10) gets one
A little load torques so that the load torque of variable displacement motor (11) driving reduces, therefore working connection system pressure reduces (above-mentioned work
During variable displacement motor (11) be in maximum pump discharge), now the first proportioning valve (21) right position obtains electric, the first high pressure accumulator (4)
Hydraulic oil is discharged through the second stop valve (3), the first proportioning valve (21), the second check valve (20) and the high pressure of variable pump (2) output
Fluid converges common driving variable displacement motor (11) and accelerates rotation, controls the first proportioning valve (21) valve port to open by controller (23)
Degree, so as to ensure the first high pressure accumulator (4) be discharged into main system fluid flow it is constant, realize accelerate start.So far, big slope
Road Acceleration of starting operating mode is completed.Acceleration of starting terminates to be divided into two stages at the uniform velocity operating mode, operating mode：First, after Acceleration of starting
First high pressure accumulator (4) and the second high pressure accumulator (17) fluid also have residue, now according to desired speed, pass through control
Device (24) processed controls the second proportioning valve (7) and the first proportioning valve (21) valve port opening to control flow constant so that variable horse
It is desired rotating speed up to the invariablenes turning speed of (11) and variable servo-motor (10)；Second, the first high pressure accumulator (4) and second
The release of high pressure accumulator (17) fluid finishes (pressure is less than system pressure, and fluid release does not come out), now the second proportioning valve (7)
Median Function is in the first proportioning valve (21), valve port is closed, and only gives variable displacement motor (11) fuel feeding by variable pump (2), is completed even
Fast operating mode.
Present invention employs main hydraulic system and hydraulic accumulation energy system, fuel feeding accelerates startup, servo-motor and variable horse simultaneously
Up to the thinking of common driving vehicle bridge, accelerate the key factor that moment of torsion is vehicle dynamical problem.Aid in accelerating drop using hydraulic accumulation energy
The low acceleration time, and when reducing Acceleration of starting motor peak power；It is total to using servo-motor and variable servo-motor
With driving vehicle bridge, main system pressure is reduced, the installed power of complete machine is reduced while increasing climbing capacity.Present system
There is some following advantage：With good Acceleration of starting performance, the time of Acceleration of starting and the peak power of motor are reduced,
Extend the service life of motor；With preferable climbing capacity, the installed power and manufacturing cost of complete machine are reduced, is had
There is good economy；Using the thought of energy-conservation, the power consumption of motor greatly reduces.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of hydraulic pressure for electro-hydraulic railcar aids in acceleration system, including controller (24), vehicle bridge (14), it is arranged on vehicle bridge
(14) case (13) is moved in reducing gear (15) on, the conjunction for being arranged on reducing gear (15) torque input, it is characterised in that：Also wrap
Include motor (1), variable pump (2), the second stop valve (3), the first high pressure accumulator (4), the 3rd check valve (5), the 4th check valve
(6), the second proportioning valve (7), low pressure accumulator (8), the first stop valve (9), variable servo-motor (10), variable displacement motor (11),
Electromagnetic clutch (12), energy recovery valve block (16), the second high pressure accumulator (17), the 3rd stop valve (18), pressure-reducing valve (19),
Second check valve (20), the first proportioning valve (21), overflow valve (22) and the first check valve (23)；
Motor (1) is connected with the power intake of variable pump (2), controller (24) and meanwhile with the control of the first proportioning valve (21)
The control terminal electrical connection at end, the control terminal of the second proportioning valve (7) and variable servo-motor (10), the torque of variable displacement motor (11) are defeated
Shaft is connected with closing the first torque input shaft of dynamic case (13), and the torque output shaft of variable servo-motor (10) is with closing dynamic case (13)
The second torque input shaft pass through electromagnetic clutch (12) connect；
Variable pump (2), the first check valve (23), the hydraulic fluid port of energy recovery valve block (16) and variable displacement motor (11) is sequentially connected and structure
Into closed circuit, and overflow valve (22) is set to be used as safety valve in the loop；
Second high pressure accumulator (17), the 3rd stop valve (18), pressure-reducing valve (19), the second proportioning valve (7), variable servo-motor
(10), the hydraulic fluid port of the first stop valve (9) and low pressure accumulator (8) is sequentially connected in series；
First high pressure accumulator (4), the second stop valve (3), the first proportioning valve (21), the hydraulic fluid port of the second check valve (20) are gone here and there successively
Connection；
Oil circuit, variable servo-motor (10) between the oil inlet and variable displacement motor (11) oil-out of variable pump (2) with first section
Only the oil circuit between valve (9) intersects and connected；
Energy recovery valve block (16) is provided with an input oil port and two output oil ports, the input oil port of the second check valve (20)
Connected with the first proportioning valve (21), output oil port, output oil port, the overflow valve of the first check valve (23) of the second check valve (20)
(22) input oil port connects with the input oil port of energy recovery valve block (16), the first output oil port of energy recovery valve block (16)
Connected with the input oil port of variable displacement motor (11), the second output oil port of energy recovery valve block (16), the 3rd check valve (5) it is defeated
Oiler, the input oil port of the 4th check valve (6) connect；
The output oil port of 3rd check valve (5) is accessed in the oil circuit between the second stop valve (3) and the first proportioning valve (21), and the 4th
The output oil port of check valve (6) is accessed in the oil circuit between the 3rd stop valve (18) and pressure-reducing valve (19).
2. the hydraulic pressure according to claim 1 for electro-hydraulic railcar aids in acceleration system, it is characterised in that：The variable
The pressure of servo-motor (10) oil inlet is controlled regulation by adjusting the valve port opening of pressure-reducing valve (19).
3. the hydraulic pressure according to claim 1 for electro-hydraulic railcar aids in acceleration system, it is characterised in that：Described second
The valve port opening of proportioning valve (7) is controlled regulation by controller (24).
4. the hydraulic pressure according to claim 1 for electro-hydraulic railcar aids in acceleration system, it is characterised in that：Described first
The valve port opening of proportioning valve (21) is controlled regulation by controller (24).
5. the hydraulic pressure according to claim 1 for electro-hydraulic railcar aids in acceleration system, it is characterised in that：The variable
The discharge capacity of servo-motor (10) is controlled regulation by controller (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687442.1A CN107458387B (en) | 2017-08-11 | 2017-08-11 | Hydraulic auxiliary acceleration system for electro-hydraulic rail car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710687442.1A CN107458387B (en) | 2017-08-11 | 2017-08-11 | Hydraulic auxiliary acceleration system for electro-hydraulic rail car |
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| Publication Number | Publication Date |
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| CN107458387A true CN107458387A (en) | 2017-12-12 |
| CN107458387B CN107458387B (en) | 2022-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710687442.1A Active CN107458387B (en) | 2017-08-11 | 2017-08-11 | Hydraulic auxiliary acceleration system for electro-hydraulic rail car |
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Cited By (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321040A (en) * | 2021-12-23 | 2022-04-12 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Short-time high-power hydraulic energy system and method |
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| CN107458387B (en) | 2022-12-30 |
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