CN206623832U - A kind of effectively power drive system of electro-hydraulic railcar - Google Patents
A kind of effectively power drive system of electro-hydraulic railcar Download PDFInfo
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- CN206623832U CN206623832U CN201720346414.9U CN201720346414U CN206623832U CN 206623832 U CN206623832 U CN 206623832U CN 201720346414 U CN201720346414 U CN 201720346414U CN 206623832 U CN206623832 U CN 206623832U
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- pump
- oil
- solenoid directional
- variable
- directional control
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Abstract
The utility model discloses a kind of effectively power drive system of electro-hydraulic railcar, battery and electric power system, motor, the first torque speed sensor, transfer case, pump group, overflow valve, the 4th solenoid directional control valve, variable displacement motor, reduction box, the second torque speed sensor, wheel are to being sequentially connected；It is additionally provided with low pressure accumulator, the oil return line of the low pressure accumulator access closed circuit；Also include electronic control unit ECU, the electronic control unit ECU is the decision package of railcar, gathers each sensor element output signals in drive system, calculates, decision-making, export correspondingly control signal to electric machine control system and each variable cell.The utility model is for the different rate request of rail vehicle, and rational to select pump group to close, making pump group discharge capacity, ensureing each pump of work has higher transmission efficiency, so as to ensure that whole drive system has high efficiency while speed requirement is met.
Description
Technical field
The utility model belongs to the drive system field of vehicle and mechanically moving, and in particular to a kind of height of electro-hydraulic railcar
Imitate power-driven system.
Background technology
Rail vehicle is used for Environment in Railway Engineering Construction and operation maintenance, has traction, provides job platform, lifting carrying and carry
For functions such as interim power sources, railcar and Operation Van are using one of extremely wide car type.Existing general fast railway, high-speed railway
It is essentially identical with the power configuration and drive system form of subway railcar and Operation Van, it is most with diesel powered and
Based on mechanical gear box (or hydraulic transmission box).Drive system is primarily to meet the basic function of complete machine traction, without base
In reasonable distribution and the utilization of the systematic parameter matched design and power of operating mode so that engine very little work is in optimal fuel oil
Area, not only overall efficiency is low but also low speed governor control characteristics is poor.Simultaneously as power utilization effect is poor so that exhaust emission is serious,
Working environment extreme difference of the engineering staff in tunnel.
Based on exhaust emission in tunnel and the problems such as noise, existing business unit devises the double dynamical of motor and diesel engine
Railcar, Diesel Driven is used using motor driving (storage battery power supply) during low speed operation, when high-speed job and power drain.
But the double power vehicle, still using machinery or hydraulic transmission box, still unresolved low-speed characteristic is poor and overall efficiency is low
The problem of.
Utility model content
Technical problem to be solved in the utility model there is provided a kind of effectively power drive system of electro-hydraulic railcar,
Required huge discharge variable pump in hydrostatic pressure system is divided into several small displacement variable parallels connection of pumps to form, for rail vehicle not
Same rate request, it is rational to select pump group to close, pump group discharge capacity is ensured each pump of work while speed requirement is met
There is higher transmission efficiency, so as to ensure that whole drive system has high efficiency.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of effectively power drive system of electro-hydraulic railcar, battery and electric power system, motor, the first moment of torsion revolution speed sensing
Device, transfer case, pump group, overflow valve, the 4th solenoid directional control valve, variable displacement motor, reduction box, the second torque speed sensor, wheel pair
It is sequentially connected；It is additionally provided with low pressure accumulator, the oil return line of the low pressure accumulator access closed circuit；
The pump group is that some pumping sources are formed in parallel, i.e., the oil-out of each pumping source is connected, and oil inlet is connected；Each pumping source
Including check valve, solenoid directional control valve and variable pump, the concrete structure of pumping source is：Check valve is connected on variable pump oil-out, electromagnetism
Reversal valve and variable parallel connection of pumps；
It is the decision package of railcar also to include electronic control unit ECU, the electronic control unit ECU, and collection drives
Each sensor element output signals in system, calculate, decision-making, export correspondingly control signal to electric machine control system and each variable list
Member.
Further, the pumping source is 3 groups, is specifically connected as：First check valve is connected on the first variable pump oil-out, the
One solenoid directional control valve and the first variable parallel connection of pumps, form the first pumping source；Second check valve is connected on the second variable pump oil-out, the
Two solenoid directional control valves and the second variable parallel connection of pumps, form the second pumping source；3rd check valve is connected on ternary and pumps out hydraulic fluid port, the
Three solenoid directional control valves and ternary parallel connection of pumps, form the 3rd pumping source；First pumping source, the second pumping source and the 3rd pumping source go out
Hydraulic fluid port is connected, and oil inlet is connected.
Further, the specific annexation of the overflow valve and pump group is：The overflow valve oil inlet and pump group are fuel-displaced
Mouth is connected, and overflow valve oil-out is connected with pump group oil inlet.
Further, the specific annexation of the pump group, the 4th solenoid directional control valve and variable displacement motor is：Pump group, the 4th
Solenoid directional control valve, variable displacement motor are connected in series, and pump group oil-out is connected with the 4th solenoid directional control valve P mouths, the 4th solenoid directional control valve A
Mouth is connected with variable displacement motor oil inlet, and variable displacement motor oil-out is connected with the 4th solenoid directional control valve B mouths, the 4th solenoid directional control valve T
Mouth is connected with pump group oil inlet, and pump group and variable displacement motor form closed circuit.
Compared with prior art, the beneficial effects of the utility model are：
Different from existing track vehicle-use dual-power hydrostatic pressure system, the system makes motor by the way that the characteristic of electrohydraulic system is compensatory
Higher efficiency is kept during stepless speed regulation with variable pump, solves that current track car low speed traveling is less efficient to ask
Topic, and be advantageous to improve the stability of vehicle low speed traveling.
The power-driven system is electrohydraulic mixed power system, using battery as power source, solves conventional diesel engine rail
Road car travels the problems such as blowdown is serious, staff's working environment is severe in subway or long Railway Tunnel.With hydrostatic transmissions
System is as drive system, the function of stepless speed regulation possessed using hydrostatic transmissions, meets railcar under different operating modes to car
The different requirements of speed, instead of regulation of the conventional rails car to internal combustion engine or traction electric machine rotating speed, internal combustion engine or traction electric machine is set to begin
It is operated in eventually near rated speed, keeps prime mover that there is higher efficiency.
When being adjusted based on hydrostatic electro-hydraulic mixed track car speed in the range of 0 to the max speed, actually adjust
Save variable pump, the discharge capacity of motor.But variable pump, motor driven efficiency are reduced by the reduction with actual displacement, and ought actually be arranged
Amount is in (actual displacement/maximum pump discharge in low scope<0.5) when, the range of decrease is larger, when actual displacement is in high scope, change
It is relatively slow.Required huge discharge variable pump in hydrostatic pressure system is divided into several small displacement variable parallel connection of pumps structures by the utility model
Into, it is rational to select pump group to close for the different rate request of rail vehicle, pump group discharge capacity is being met the same of speed requirement
When, ensureing each pump of work has higher transmission efficiency, ensures that whole drive system has high efficiency.
Brief description of the drawings
Fig. 1 is a kind of effectively power driving system structure schematic diagram of electro-hydraulic railcar of the utility model.
In figure：Battery and electric power system 1；Motor 2；First torque speed sensor 3；Transfer case 4；Pump group 5；Low pressure accumulation of energy
Device 6；Overflow valve 7；4th solenoid directional control valve 8；Variable displacement motor 9；Reduction box 10；Second torque speed sensor 11；Wheel is to 12；
ECU 13；First variable pump 51；First check valve 52；First solenoid directional control valve 53；Second variable pump 54；Second check valve 55；
Second solenoid directional control valve 56；Ternary pump 57；3rd check valve 58；3rd solenoid directional control valve 59.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As shown in figure 1, Tthe utility model system mainly includes battery and electric power system 1, motor 2, the first moment of torsion rotating speed pass
Sensor 3, transfer case 4, pump group 5, low pressure accumulator 6, overflow valve 7, the 4th solenoid directional control valve 8, variable displacement motor 9, reduction box 10,
Two torque speed sensors 11, wheel are to 12, electronic control unit ECU 13.Wherein, the core parts of pump group 5 include the first variable
Pump 51, the first check valve 52, the first solenoid directional control valve 53, the second variable pump 54, the second check valve 55, the second solenoid directional control valve
56th, ternary pump 57, the 3rd check valve 58, the 3rd solenoid directional control valve 59.
Battery and electric power system 1, motor 2, the first torque speed sensor 3, transfer case 4 are sequentially connected in series electro-hydraulic mixing
Electric transmission part in drive system, rotating speed that motor 2 is exported, moment of torsion pass to electricity by the first torque speed sensor 3
Sub-control unit ECU 13.Meanwhile 13 exportable control signals of electronic control unit ECU are set up to battery and electric power system 1
The parameters such as the rotating speed of motor 2.
Pump group 5, the 4th solenoid directional control valve 8, variable displacement motor 9 are connected in series, and form the hydrostatic in electro-hydraulic hybrid drive system
Running part is pressed, the oil-out of pump group 5 is connected with the P mouths of the 4th solenoid directional control valve 8, A mouths and the variable horse of the 4th solenoid directional control valve 8
It is connected up to 9 oil inlets, the oil-out of variable displacement motor 9 is connected with the B mouths of the 4th solenoid directional control valve 8, the T mouths of the 4th solenoid directional control valve 8
It is connected with the oil inlet of pump group 5, pump group 5, variable displacement motor 9 form a closed loop.
The maximum working pressure of hydrostatic pressure system is set up due to the overflow valve 7 in parallel of pump group 5.
The main element of pump group 5 includes three small displacement variable pumps, three check valves, three solenoid directional control valves, wherein first
Variable pump 51 is in parallel with the first solenoid directional control valve 53, and the first variable pump 51 is connected with the first check valve 52, forms the first pumping source.Class
As, the second variable pump 54, the second solenoid directional control valve 56, the second check valve 55 form the second pumping source, ternary pump the 57, the 3rd
Solenoid directional control valve 59, the 3rd check valve 58 form the 3rd pumping source, and three small displacement pumping sources compose in parallel a huge discharge pump group, with
Meet that the regulation of track vehicle speed requires.When railcar needs tick-over, electronic control unit ECU 13 according to target vehicle speed,
The system real-time parameter such as motor displacement calculates pump group actual displacement (being much smaller than pump group maximum pump discharge), further according to the first variable pump
51st, the maximum pump discharge decision-making of the second variable pump 54, ternary pump 57 goes out that those pumps are in running order, and which pump is in off-load
State (turns on) with the left position of the solenoid directional control valve of parallel connection of pumps, and ensures that each in running order variable pump actual displacement is in
High displacement range, avoid dependent variable pump from being in low displacement range and cause its rotational efficienty relatively low, and then influence whole combined drive
Dynamic system effectiveness.
If necessary, the rotating speed of fine-tuning motor 2 carrys out adjustable track vehicle speed on the premise of electric efficiency is ensured.
In electro-hydraulic hybrid drive system hydrostatic drive portion, the 4th electromagnetism of having been connected between pump group 5 and variable displacement motor 9 changes
To valve 8, on the premise of motor 2 or the rotation direction of pump group 5 is not changed, electronic control unit ECU 13 can be by changing the 4th electricity
Magnetic reversal valve 8 turns on chamber position, realizes that variable displacement motor 9 rotates backward, and then can realize railcar fallback function.
Low pressure accumulator 6 is accessed on the oil return line of closed circuit, when the change of railcar operating rate, hydrostatic pressure system stream
When quantitative change is big, low pressure accumulator 6 serves as fuel tank and provides fluid for system.
Variable displacement motor 9 drives rail wheel to be taken turns to 12 to the second torque speed sensor 11 on 12 by reduction box 10
Track vehicle travelling state is passed into electronic control unit ECU 13, so that electronic control unit ECU 13 makes phase according to instruction
Answer decision-making.
Claims (4)
- A kind of 1. effectively power drive system of electro-hydraulic railcar, it is characterised in thatBattery and electric power system (1), motor (2), the first torque speed sensor (3), transfer case (4), pump group (5), overflow valve (7), the 4th solenoid directional control valve (8), variable displacement motor (9), reduction box (10), the second torque speed sensor (11), wheel are to (12) It is sequentially connected；It is additionally provided with low pressure accumulator (6), the oil return line of low pressure accumulator (6) the access closed circuit；The pump group (5) is that some pumping sources are formed in parallel, i.e., the oil-out of each pumping source is connected, and oil inlet is connected；Each pumping source Including check valve, solenoid directional control valve and variable pump, the concrete structure of pumping source is：Check valve is connected on variable pump oil-out, electromagnetism Reversal valve and variable parallel connection of pumps；It is the decision package of railcar also to include electronic control unit ECU, the electronic control unit ECU, gathers drive system In each sensor element output signals, calculate, decision-making, export correspondingly control signal to electric machine control system and each variable cell.
- 2. a kind of effectively power drive system of electro-hydraulic railcar as claimed in claim 1, it is characterised in that the pumping source is 3 groups, specifically it is connected as：First check valve (52) is connected on the first variable pump (51) oil-out, the first solenoid directional control valve (53) and the first variable pump (51) it is in parallel, form the first pumping source；Second check valve (55) is connected on the second variable pump (54) oil-out, the second solenoid directional control valve (56) and the second variable pump (54) it is in parallel, form the second pumping source；3rd check valve (58) is connected on ternary pump (57) oil-out, the 3rd solenoid directional control valve (59) and ternary pump (57) it is in parallel, form the 3rd pumping source；The oil-out of first pumping source, the second pumping source and the 3rd pumping source is connected, and oil inlet is connected.
- 3. a kind of effectively power drive system of electro-hydraulic railcar as claimed in claim 1 or 2, it is characterised in that described to overflow Stream valve (7) and the specific annexation of pump group (5) are：Overflow valve (7) oil inlet is connected with pump group (5) oil-out, overflow valve (7) oil-out and pump group (5) oil inlet phase Even.
- A kind of 4. effectively power drive system of electro-hydraulic railcar as claimed in claim 1 or 2, it is characterised in that the pump The specific annexation of group (5), the 4th solenoid directional control valve (8) and variable displacement motor (9) is：Pump group (5), the 4th solenoid directional control valve (8), variable displacement motor (9) are connected in series, pump group (5) oil-out and the 4th electromagnetic switch Valve (8) P mouths are connected, and the 4th solenoid directional control valve (8) A mouths are connected with variable displacement motor (9) oil inlet, variable displacement motor (9) oil-out with 4th solenoid directional control valve (8) B mouths are connected, and the 4th solenoid directional control valve (8) T mouths are connected with pump group (5) oil inlet, pump group (5) and change Measure motor (9) and form closed circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720346414.9U CN206623832U (en) | 2017-04-05 | 2017-04-05 | A kind of effectively power drive system of electro-hydraulic railcar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720346414.9U CN206623832U (en) | 2017-04-05 | 2017-04-05 | A kind of effectively power drive system of electro-hydraulic railcar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206623832U true CN206623832U (en) | 2017-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720346414.9U Expired - Fee Related CN206623832U (en) | 2017-04-05 | 2017-04-05 | A kind of effectively power drive system of electro-hydraulic railcar |
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| CN (1) | CN206623832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945678A (en) * | 2017-04-05 | 2017-07-14 | 西南交通大学 | A kind of effectively power drive system of electro-hydraulic railcar |
-
2017
- 2017-04-05 CN CN201720346414.9U patent/CN206623832U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945678A (en) * | 2017-04-05 | 2017-07-14 | 西南交通大学 | A kind of effectively power drive system of electro-hydraulic railcar |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171110 Termination date: 20200405 |