CN102167046A - Hydraulic low-speed walking transmission system - Google Patents
Hydraulic low-speed walking transmission system Download PDFInfo
- Publication number
- CN102167046A CN102167046A CN2010101244382A CN201010124438A CN102167046A CN 102167046 A CN102167046 A CN 102167046A CN 2010101244382 A CN2010101244382 A CN 2010101244382A CN 201010124438 A CN201010124438 A CN 201010124438A CN 102167046 A CN102167046 A CN 102167046A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- oil
- electro
- hydraulic motor
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Motor Power Transmission Devices (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
The invention discloses a hydraulic low-speed walking transmission system. The oil pump of the system is connected with the inlet of an electrohydraulic selector valve by a pipeline; the high pressure working oil port and the low pressure working oil port of the electrohydraulic selector valve are connected with the oil inlet and the oil outlet of a hydraulic motor; the oil returning port of the electrohydraulic selector valve is communicated with a hydraulic oil tank; and the hydraulic motor is in transmission connection with an axle gear box. In the walking process, the oil outlet of the hydraulic motor is always communicated with the low pressure working oil port of the electrohydraulic selector valve, and does not enter the oil inlet pipeline of an oil pump any more. In the descending process, the energy acquired by the hydraulic motor cannot be transferred to the oil pump and a diesel engine, so that the rotational speed of the diesel engine increases. An electric proportional overflow valve is arranged between the oil returning port of the electrohhydraulic selector valve and the hydraulic oil tank, and an oil returning pressure applied to the hydraulic motor is changed by adjusting the electric proportional overflow valve, so that the stress on a vehicle is balanced, and the constant-speed walking of the vehicle is ensured. Check valves are arranged between the oil inlet and the oil outlet of the hydraulic motor and the oil returning pipeline of the electric proportional overflow valve, so that the problem that suction easily occurs in the hydraulic motor in an open hydraulic system can be solved.
Description
Technical field
The present invention relates to a kind of even low speed walking system of hydraulic pressure of railway track polishing vehicle, is a kind of driving system that adopts open type hydraulic system to come the powered vehicle traveling specifically.
Background technology
At present, railway track vehicle low speed traveling both at home and abroad all adopts the hydraulic closed system to realize that traveling drives, and the oil circuit trend is from oil pump → HM Hydraulic Motor → oil pump, forms a closed-cycle system.The drawback that adopts closed system to bring is that vehicle speed of a motor vehicle when " growing up " down ramp moves can increase, and oil pump becomes " motor " operating mode, and motor becomes " oil pump " operating mode, and the height pressure side of pipeline is exchanged.In like manner vehicle the change working of oil pump and motor can occur equally in the decelerating phase, and the height pressure side of pipeline is exchanged equally.To the diesel engine acting, the power that diesel engine absorbs the oil pump input can make the rotating speed of diesel engine raise even can surpass the diesel engine limit speed, easily causes damage diesel engine accident behind the transfer of energy fuel feed pump that motor obtained in down ramp or decelerating phase.
Summary of the invention
The invention provides a kind of vehicle even low speed walking under various ramps that realizes, avoid vehicle in long heavy down grade or decelerating phase vehicle inertia hydraulic low-speed traveling driving system to the driving engine acting.
Technical program of the present invention lies in comprising the oil pump of a feed system fluid after the hydraulic reservoir oil suction; Oil pump is connected with the import of electro-hydraulic reversing valve through pipeline, high and low two actuator ports of electro-hydraulic reversing valve and being connected into and out of hydraulic fluid port of HM Hydraulic Motor; The return opening of electro-hydraulic reversing valve is connected with hydraulic reservoir, and HM Hydraulic Motor and axle gear box are in transmission connection.
The return opening into and out of being connected of hydraulic fluid port, electro-hydraulic reversing valve of high and low two actuator ports of said electro-hydraulic reversing valve and HM Hydraulic Motor with the connection of hydraulic reservoir is: electro-hydraulic reversing valve high-pressure work hydraulic fluid port is connected with the oil inlet of HM Hydraulic Motor through pipeline; The oil outlet of HM Hydraulic Motor links to each other with the operating on low voltage hydraulic fluid port of electro-hydraulic reversing valve through pipeline; The operating on low voltage hydraulic fluid port of electro-hydraulic reversing valve is through the electro-hydraulic reversing valve return opening, be connected with hydraulic reservoir through electric proportional pressure control valve, first by pass valve, cooling mechanism.
Said HM Hydraulic Motor between hydraulic fluid port and electric proportional pressure control valve oil return line, a passage is arranged, on this passage, check valve is housed.
Said oil pump is connected with hydraulic reservoir through second by pass valve.
The oil outlet of the present invention's HM Hydraulic Motor in the traveling process communicates with electro-hydraulic reversing valve operating on low voltage hydraulic fluid port all the time, no longer enters on the oil inlet pipeline of oil pump.The energy that obtains in the descending HM Hydraulic Motor can not pass to oil pump, also just can not be delivered to diesel engine and cause the rotating speed of diesel engine to raise.The oil outlet of HM Hydraulic Motor is connected with hydraulic reservoir through the return opening of electro-hydraulic reversing valve, be provided with electric proportional pressure control valve between the return opening of electro-hydraulic reversing valve and the hydraulic reservoir, change the spill pressure that acts on the HM Hydraulic Motor by adjusting electric proportional pressure control valve, reach the vehicle stress balance, guarantee at the uniform velocity traveling of vehicle.Between HM Hydraulic Motor oil inlet and outlet and electric proportional pressure control valve oil return line, be provided with check valve, can prevent the problem that HM Hydraulic Motor is prone in the open type hydraulic system " inhaling empty ".
The invention solves the vehicle problem that oil pump " is inhaled empty " when down ramp or decelerating phase operation.Can be implemented under the various ramps vehicle and be in even low speed traveling.
Description of drawings
The embodiment that provides below in conjunction with accompanying drawing is described in further detail the present invention.
Fig. 1 is a hydraulic schematic diagram of the present invention.
Fig. 2 installs front view for the present invention.
Fig. 3 installs birds-eye view for the present invention.
The specific embodiment
Among Fig. 1, by hydraulic oil pump 10, pilot-operated type second by pass valve 9 (pilot overflow valve), play that the control vehicle advances or the electro-hydraulic reversing valve 3, electric proportional pressure control valve 2, check valve 1, the HM Hydraulic Motor 4 that can promote travelled by vehicle under the pressure oil effect, cooling mechanism 8, fuel tank 6, Direct Action Type the 3rd by pass valve 5 that retreat effect formed an open type hydraulic system loop.Electro-hydraulic reversing valve 3 has two actuator ports, wherein any one is used for the high-pressure work hydraulic fluid port, and then another is used for the operating on low voltage hydraulic fluid port, two hydraulic fluid ports of HM Hydraulic Motor, oil inlet links to each other with the high-pressure work hydraulic fluid port of electro-hydraulic reversing valve, and oil outlet links to each other with the operating on low voltage hydraulic fluid port of electro-hydraulic reversing valve.Two oil pumps 10 collaborate after pipeline is connected with the import P of electro-hydraulic reversing valve 3, after electro-hydraulic reversing valve 3 (band pilot stage solenoid directional control valve) the left end electromagnet energising, fluid is connected with the oil inlet of HM Hydraulic Motor 4 after by the high-pressure work hydraulic fluid port of the left end of electro-hydraulic reversing valve 3, HM Hydraulic Motor 4 oil outlets with after the operating on low voltage hydraulic fluid port of electro-hydraulic reversing valve 3 right-hand members is connected through the oil return inlet T of electro-hydraulic reversing valve.With should electro-hydraulic reversing valve pilot stage solenoid directional control valve right-hand member electromagnet energising back fluid be connected with the oil inlet (former oil outlet becomes oil inlet) of HM Hydraulic Motor 4 after by the high-pressure work hydraulic fluid port of the right-hand member of electro-hydraulic reversing valve 3, HM Hydraulic Motor 4 oil outlets (former oil inlet becomes oil outlet) with after the operating on low voltage hydraulic fluid port of electro-hydraulic reversing valve 3 left ends is connected through the oil return inlet T of electro-hydraulic reversing valve.Fluid enters the oil inlet that can change the electric proportional pressure control valve 2 of constantly adjusting force value according to the speed of a motor vehicle after the electro-hydraulic reversing valve oil return inlet T, after flowing out, enter the oil inlet of first by pass valve 7, flow out from the oil outlet of first by pass valve 7 and enter cooling mechanism 8 backs and be connected with fuel tank 6 from the oil outlet of electric proportional pressure control valve 2.On the oil return line between electric proportional pressure control valve 2 oil outlets and first by pass valve, 7 oil inlets, there is a passage to be connected with the HM Hydraulic Motor oil inlet, check valve 1 is housed on this passage.Oil pump 10 oil outlets are connected with fuel tank 6 after having a passage to enter second by pass valve, 9 oil inlets.The pipeline that the 3rd by pass valve 5 is loaded on the high-pressure work hydraulic fluid port of electro-hydraulic reversing valve 3 and HM Hydraulic Motor 4 oil inlets is between the pipeline of the operating on low voltage hydraulic fluid port of electro-hydraulic reversing valve 3 and HM Hydraulic Motor 4 oil outlets.
When down ramp moves, the even low speed of vehicle realizes it being the force value of constantly adjusting electric proportional pressure control valve 2 according to the variation of the speed of a motor vehicle, this pressure acts on the oil outlet of HM Hydraulic Motor after by electro-hydraulic reversing valve, act on the motor gear case after applying a reactive torque to HM Hydraulic Motor, this reactive torque is offset vehicle gravity along the component on the ramp to producing an antagonistic force on the vehicle after passing to transmission shaft and axle gear box, reaches the state of traveling at the uniform speed until the vehicle stress balance.When hypervelocity appears in down ramp or decelerating phase vehicle, oil pump and HM Hydraulic Motor are carried out change working, by check valve 1 oil revolving end fluid is oppositely supplied with oil inlet when the fuel feeding deficiency appears in oil inlet after HM Hydraulic Motor change " oil pump " operating mode, avoid HM Hydraulic Motor to be in and " inhale that empty " state, charge oil pressure is adjusted by first by pass valve 7.The 3rd by pass valve 5 is used for eliminating the spike pressure of traveling HM Hydraulic Motor oil inlet end, prevents the HM Hydraulic Motor impact that is under pressure.
Oil circuit trend: fuel tank 6 → oil pump 10 → electro-hydraulic reversing valve 3 → HM Hydraulic Motor 4 → electro-hydraulic reversing valve 3 → electric proportional pressure control valve 2 → the second by pass valves 9 → cooling mechanism 8 → fuel tank 6
Among Fig. 2, Fig. 3, said HM Hydraulic Motor 4 places on the carriage frame 11 below motor gear casees 20, motor gear case 20 mouths are connected with second transmission shaft 19, second transmission shaft 19 is connected with second axle gear box 18, and second axle gear box 18 and first axle gear box 16 are connected together through the 3rd transmission shaft 17.Oil pump 10 is installed in auxiliary gear box 14 1 sides, auxiliary gear box 14 opposite sides and is installed in diesel engine 12 rear ends after first transmission shaft 13 is connected.Said electro-hydraulic reversing valve 3, electric proportional pressure control valve 2, second by pass valve 9, the 3rd by pass valve 5, check valve 1 is all integrated is installed on the vehicle frame 11 top integrated packages 15.Said cooling mechanism 8 is installed in vehicle frame 11 tops, and first by pass valve 7 is installed in the cooling mechanism side.Fuel tank 6 is installed in vehicle frame 11 tops.
Claims (5)
1. hydraulic low-speed traveling driving system is characterized in that: the oil pump that comprises a feed system fluid after the hydraulic reservoir oil suction; Oil pump is connected with the import of electro-hydraulic reversing valve through pipeline, high and low two actuator ports of electro-hydraulic reversing valve and being connected into and out of hydraulic fluid port of HM Hydraulic Motor; The return opening of electro-hydraulic reversing valve is connected with hydraulic reservoir; HM Hydraulic Motor and axle gear box are in transmission connection.
2. hydraulic low-speed traveling driving system according to claim 1 is characterized in that: high and low two actuator ports of said electro-hydraulic reversing valve and being connected into and out of hydraulic fluid port of HM Hydraulic Motor.The return opening of electro-hydraulic reversing valve with the connection of hydraulic reservoir is: electro-hydraulic reversing valve high-pressure work hydraulic fluid port is connected with the oil inlet of HM Hydraulic Motor through pipeline; The oil outlet of HM Hydraulic Motor links to each other with the operating on low voltage hydraulic fluid port of electro-hydraulic reversing valve through pipeline, and the operating on low voltage hydraulic fluid port of electro-hydraulic reversing valve is through the electro-hydraulic reversing valve return opening, be connected with hydraulic reservoir through electric proportional pressure control valve, first by pass valve, cooling mechanism.
3. hydraulic low-speed traveling driving system according to claim 1 is characterized in that: said HM Hydraulic Motor between hydraulic fluid port and electric proportional pressure control valve oil return line, a passage is arranged, on this passage, check valve is housed.
4. hydraulic low-speed traveling driving system according to claim 1, it is characterized in that: said oil pump is connected with hydraulic reservoir through second by pass valve.
5. hydraulic low-speed traveling driving system according to claim 1, it is characterized in that: being in transmission connection of said HM Hydraulic Motor and axle gear box places on the motor gear case of carriage frame below for: HM Hydraulic Motor, motor gear case mouth is connected with second transmission shaft, second transmission shaft is connected with second axle gear box, and second axle gear box is connected through the 3rd transmission shaft with first axle gear box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010124438.2A CN102167046B (en) | 2010-02-27 | 2010-02-27 | Hydraulic low-speed walking transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010124438.2A CN102167046B (en) | 2010-02-27 | 2010-02-27 | Hydraulic low-speed walking transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102167046A true CN102167046A (en) | 2011-08-31 |
| CN102167046B CN102167046B (en) | 2015-05-20 |
Family
ID=44488421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010124438.2A Active CN102167046B (en) | 2010-02-27 | 2010-02-27 | Hydraulic low-speed walking transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102167046B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330670A (en) * | 2011-09-19 | 2012-01-25 | 中航力源液压股份有限公司 | Method and device for preventing plunger pump from sucking air |
| CN103213585A (en) * | 2012-07-13 | 2013-07-24 | 金鹰重型工程机械有限公司 | Double-dynamical transmission system of rail vehicle |
| CN103775621A (en) * | 2014-01-22 | 2014-05-07 | 宝鸡南车时代工程机械有限公司 | Railway rail car torque converter reverse drag lubrication system |
| CN104627160A (en) * | 2015-02-13 | 2015-05-20 | 湖南五新重型装备有限公司 | Hydraulic walking control system for engineering vehicle |
| CN104976307A (en) * | 2015-07-16 | 2015-10-14 | 河海大学常州校区 | Hydraulic coupler |
| CN105179632A (en) * | 2015-07-16 | 2015-12-23 | 河海大学常州校区 | Hydraulic coupler |
| CN112682369A (en) * | 2021-01-11 | 2021-04-20 | 中车株洲车辆有限公司 | Dual-purpose vehicle for road and railway, and hydraulic control system and method for dual-purpose vehicle for road and railway |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2026910A1 (en) * | 1970-06-02 | 1971-12-23 | Lucas Ltd Joseph | Hydraulic transmission |
| DE2354280A1 (en) * | 1973-10-30 | 1975-05-15 | Voith Getriebe Kg | High power motor vehicle drive - has mechanical synchronised reversing gear and hydrostatic drive and coupling |
| CN2084407U (en) * | 1990-12-29 | 1991-09-11 | 乌鲁木齐铁路局科学技术研究所 | Spindle bearing nut disassemble machine for diesel engine |
| CN2189570Y (en) * | 1993-05-22 | 1995-02-15 | 铁道部四方机车车辆工厂 | Hydraulic direction-changing mechanism for locomotive |
| CN101492053A (en) * | 2009-02-19 | 2009-07-29 | 肖公平 | Ropeway fluid power system for mine |
| CN201363327Y (en) * | 2009-01-15 | 2009-12-16 | 杭州海聚动力科技有限公司 | Hydraulic system applied to fire rescue motorcycle |
| CN201694192U (en) * | 2010-02-27 | 2011-01-05 | 襄樊金鹰轨道车辆有限责任公司 | Hydraulic low speed traveling transmission system |
-
2010
- 2010-02-27 CN CN201010124438.2A patent/CN102167046B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2026910A1 (en) * | 1970-06-02 | 1971-12-23 | Lucas Ltd Joseph | Hydraulic transmission |
| DE2354280A1 (en) * | 1973-10-30 | 1975-05-15 | Voith Getriebe Kg | High power motor vehicle drive - has mechanical synchronised reversing gear and hydrostatic drive and coupling |
| CN2084407U (en) * | 1990-12-29 | 1991-09-11 | 乌鲁木齐铁路局科学技术研究所 | Spindle bearing nut disassemble machine for diesel engine |
| CN2189570Y (en) * | 1993-05-22 | 1995-02-15 | 铁道部四方机车车辆工厂 | Hydraulic direction-changing mechanism for locomotive |
| CN201363327Y (en) * | 2009-01-15 | 2009-12-16 | 杭州海聚动力科技有限公司 | Hydraulic system applied to fire rescue motorcycle |
| CN101492053A (en) * | 2009-02-19 | 2009-07-29 | 肖公平 | Ropeway fluid power system for mine |
| CN201694192U (en) * | 2010-02-27 | 2011-01-05 | 襄樊金鹰轨道车辆有限责任公司 | Hydraulic low speed traveling transmission system |
Non-Patent Citations (1)
| Title |
|---|
| 李廉枫等: "CK6型液力传动内燃机车", 《内燃机车》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330670A (en) * | 2011-09-19 | 2012-01-25 | 中航力源液压股份有限公司 | Method and device for preventing plunger pump from sucking air |
| CN102330670B (en) * | 2011-09-19 | 2014-12-10 | 中航力源液压股份有限公司 | Method and device for preventing plunger pump from sucking air |
| CN103213585A (en) * | 2012-07-13 | 2013-07-24 | 金鹰重型工程机械有限公司 | Double-dynamical transmission system of rail vehicle |
| CN103775621A (en) * | 2014-01-22 | 2014-05-07 | 宝鸡南车时代工程机械有限公司 | Railway rail car torque converter reverse drag lubrication system |
| CN104627160A (en) * | 2015-02-13 | 2015-05-20 | 湖南五新重型装备有限公司 | Hydraulic walking control system for engineering vehicle |
| CN104976307A (en) * | 2015-07-16 | 2015-10-14 | 河海大学常州校区 | Hydraulic coupler |
| CN105179632A (en) * | 2015-07-16 | 2015-12-23 | 河海大学常州校区 | Hydraulic coupler |
| CN112682369A (en) * | 2021-01-11 | 2021-04-20 | 中车株洲车辆有限公司 | Dual-purpose vehicle for road and railway, and hydraulic control system and method for dual-purpose vehicle for road and railway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102167046B (en) | 2015-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102167046B (en) | Hydraulic low-speed walking transmission system | |
| CN105714655B (en) | Method for running self-propelled roller | |
| CN104816621B (en) | Hydraulic hybrid power vehicles and its hydraulic hybrid power system | |
| CN102365186B (en) | For the energy storage system of motor vehicle driven by mixed power | |
| CN1969129B (en) | Working machine | |
| CN102753851B (en) | Hydraulic torque converter and torque amplifier | |
| CN105090134B (en) | Hydraulic supply unit | |
| CN105539132B (en) | Dual power drive system, engineering machinery vehicle and control method | |
| CN105626855B (en) | Speed changer sum aggregate is at transfer case | |
| CN101091025A (en) | Working machine | |
| CN104421229B (en) | Hydrostatic drive | |
| CN102330759A (en) | Hydraulic system and hybrid power vehicle comprising same | |
| CN104791311B (en) | A kind of engineering truck hydraulic moving control system | |
| CN102390257B (en) | High and low-speed travel driving electric-hydraulic control system of engineering machinery | |
| CN102501758A (en) | Fully-hydraulically-driven travelling system for underground trackless rubber-tired car | |
| CN106740081A (en) | A kind of aerial work platform four-wheel-driven control system | |
| CN201694192U (en) | Hydraulic low speed traveling transmission system | |
| CN201010925Y (en) | Straight walking mechanism of hydraulic excavator | |
| CN105090427B (en) | A kind of mechanical-hydraulic mixing stepless speed change device of use secondary component | |
| CN105774516A (en) | Dual-power coupling device for hybrid powered automatic transmission hydraulic system | |
| CN102785694A (en) | Hydraulic system for controlling vehicle to realize two-way travelling | |
| CN108953256A (en) | loading machine hydrostatic drive system | |
| CN203062948U (en) | Hydraulic pilot control system of oil-liquid hybrid power concrete mixer truck | |
| CN203186097U (en) | Single-pump double-motor hydraulic transmission system | |
| CN103591280B (en) | Transmission clutch piston compensated device supply circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 441000 No.1, Xinming Road, high tech Zone, Xiangyang City, Hubei Province Patentee after: Jinying Heavy Construction Machinery Co.,Ltd. Address before: 441001 No.19 Xudong Road, Xiangyang City, Hubei Province Patentee before: GEMAC ENGINEERING MACHINERY Co.,Ltd. Address after: 441001 No.19 Xudong Road, Xiangyang City, Hubei Province Patentee after: GEMAC ENGINEERING MACHINERY Co.,Ltd. Address before: 441001 No. 19 Dongxu East Road, Hubei, Xiangfan Patentee before: Xiangfan Golden Eagle Railway Vehicle & Machinery Co.,Ltd. |