CN103244476A - Railway track operating vehicle with closed static-pressure travelling system - Google Patents
Railway track operating vehicle with closed static-pressure travelling system Download PDFInfo
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- CN103244476A CN103244476A CN2013101393662A CN201310139366A CN103244476A CN 103244476 A CN103244476 A CN 103244476A CN 2013101393662 A CN2013101393662 A CN 2013101393662A CN 201310139366 A CN201310139366 A CN 201310139366A CN 103244476 A CN103244476 A CN 103244476A
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Abstract
The invention provides a railway track operating vehicle with a closed static-pressure travelling system. An oil refilling pump inlet end of the closed static-pressure travelling system is communicated with a hydraulic oil tank outlet end through an oil-absorption filter, an oil refilling pump outlet end is communicated with an inlet end of a fine filter with two outlet ends, one of the outlet ends of the fine filter is communicated with an inlet end of a proportional-control valve I integrated on a proportional-control variable pump, and the other outlet end of the fine filter is communicated with an inlet end of a high-pressure oil-refilling overflow valve, and an outlet end of the proportional-control variable pump is communicated with an inlet end of a hydraulic motor. An outlet end of the proportional-control valve I is communicated with a displacement control mechanism capable of controlling displacement and rotation direction of the proportional-control variable pump, hydraulic oil discharged from the proportional variable pump enters a hydraulic motor to control rotation speed and direction thereof, power of an outlet end of the hydraulic motor is transmitted to a vehicle travelling portion to control travelling speed and direction of the operating vehicle through an axle gearbox, a flushing valve is integrated on the hydraulic motor and is communicated with an inlet end of a hydraulic oil radiator, and an outlet end of the hydraulic oil radiator is communicated with an inlet end of a hydraulic oil tank.
Description
Technical field
The invention belongs to railroad track operating vehicle technical field, be specifically related to a kind of railroad track operating vehicle with the closed type static pressure walking system.
Background technique
At present, the get on the right track operation of operating vehicle of railway mostly is mechanical transmission or hydraudynamic drive greatly, and the static pressure traveling is the modes that adopt the transmission of open type static pressure also more.Mechanical transmission or hydraudynamic drive easily realize the operation that the track operation car is high-power, high-speed, but its low-speed stability can then be difficult to ensure.Adopt the track operation car of open type static-pressure system, hydraulic system is exposed to the outside, and not only efficient is low, and the drive path complexity, difficult arrangement in the limited arrangement space of vehicle frame, profile is huge, speed governing is accurate inadequately, causes low-speed stability bad, therefore is necessary to improve.
Summary of the invention
The technical problem that the present invention solves: a kind of railroad track operating vehicle with the closed type static pressure walking system is provided, satisfy the low speed smooth running performance of railroad track operating vehicle, according to working condition requirement, the low speed traveling speed of track operation car can be matched in 0～20km/h scope, general multiselect is with the speed of a motor vehicle of 0～10km/h, and can realize stepless speed regulation, can on working platform, carry out remote wireless control to travelled by vehicle in addition.
The technical solution used in the present invention: the railroad track operating vehicle of band closed type static pressure walking system, comprise car body, vehicle frame and walking system, described car body places the vehicle frame top, described walking system adopts the closed type static pressure walking system, described closed type static pressure walking system comprises the proportional control variable displacement pump, oil hydraulic motor, hydraulic oil container, the oil suction oil purifier, slippage pump, flushing valve, hydraulic oil radiator and secondary filter, described slippage pump entrance point is communicated with the hydraulic oil container outlet end by the oil suction oil purifier and is used for replenishing the leakage in loop and hydraulic system is forced cooling, the slippage pump outlet end is communicated with the secondary filter entry end, described secondary filter has two outlet end, one of them outlet end is communicated with proportional control valve I entry end on being integrated in the proportional control variable displacement pump, its second outlet end is communicated with additional hydraulic system leakage oil with high pressure repairing relief valve entrance point, described proportional control variable displacement pump outlet end is communicated with the oil hydraulic motor entry end, described proportional control valve I outlet end is communicated with the displacement control mechanism that can control proportional control variable displacement pump discharge capacity and rotation direction, the hydraulic oil that proportional variable pump is discharged enters the rotating speed of oil hydraulic motor control oil hydraulic motor and turns to, described oil hydraulic motor outlet end power is delivered to travelled by vehicle portion control operating vehicle's traveling speed and direction by axle gear box, wherein, integrated flushing valve on the described oil hydraulic motor, when entering oil hydraulic motor, hydraulic oil enters into the flushing valve two ends, described oil hydraulic motor inlet outlet pressure differential promotes the flushing valve action makes hydraulic system oil liquid connect by flushing valve and hydraulic oil radiator entry end, and described hydraulic oil radiator outlet end is communicated with the hydraulic oil container entry end.In such scheme, described oil hydraulic motor is fixed displacement motor, and operating vehicle's traveling speed is matched in 0～10km/h scope.
Preferably, also be integrated with the proportional control valve II on the described oil hydraulic motor, described proportional control valve II entry end is communicated with proportional control variable displacement pump outlet end, and proportional control valve II outlet end is communicated with the rotating speed of controlling oil hydraulic motor with the displacement control mechanism that can control the oil hydraulic motor discharge capacity.In such scheme, described oil hydraulic motor is variable displacement motor, and operating vehicle's traveling speed is matched in 0～20km/h scope.
The present invention's advantage compared with prior art:
1, operating vehicle's low cruise stable and reliable for performance, can easily realize stepless speed regulation, and start, operation and commutation steadily do not have and impact, and is fit to the low speed operation operating mode of track operation car;
2, the hydraulic oil of closed type static pressure walking system circulates in the system of relative closure, efficient height, easy to operate, speed governing accurately, compact appearance;
3, to have simplified drive path, flexible arrangement, low-speed stability good for the closed type static pressure walking system.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the theory structure schematic representation of a kind of closed type static pressure walking system of the present invention;
Fig. 3 is the theory structure schematic representation of the another kind of closed type static pressure walking system of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1,2 and 3 embodiments of the invention are described.
The railroad track operating vehicle of band closed type static pressure walking system, comprise car body 12, vehicle frame 13 and walking system, described car body 12 places vehicle frame 13 tops, described walking system adopts the closed type static pressure walking system, described closed type static pressure walking system comprises proportional control variable displacement pump 1, oil hydraulic motor 6, hydraulic oil container 10, oil suction oil purifier 9, slippage pump 8, flushing valve 5, hydraulic oil radiator 4 and secondary filter 7, described slippage pump 8 entrance points are communicated with hydraulic oil container 10 outlet end by oil suction oil purifier 9 and are used for replenishing the leakage in loop and hydraulic system is forced cooling, slippage pump 8 outlet end are communicated with secondary filter 7 entry ends, described secondary filter 7 has two outlet end, one of them outlet end is communicated with proportional control valve I2 entry end on being integrated in proportional control variable displacement pump 1, its second outlet end is communicated with additional hydraulic system leakage oil with high pressure repairing relief valve 3 entrance points, described proportional control variable displacement pump 1 outlet end is communicated with oil hydraulic motor 6 entry ends, thereby described proportional control valve I2 outlet end is communicated with the rotating speed of controlling oil hydraulic motor 6 and turns to the displacement control mechanism that can control proportional control variable displacement pump 1 discharge capacity and rotation direction, described oil hydraulic motor 6 outlet end power are delivered to travelled by vehicle portion 14 control operating vehicle's traveling speed and directions by axle gear box, wherein, integrated flushing valve 5 on the described oil hydraulic motor 6, hydraulic oil enters into flushing valve 5 two ends when entering oil hydraulic motor 6, described oil hydraulic motor 6 inlet outlet pressure differentials promote flushing valve 5 actions makes hydraulic system oil liquid connect by flushing valve 5 and hydraulic oil radiator 4 entry ends, described hydraulic oil radiator 4 outlet end are communicated with hydraulic oil container 10 entry ends, in this scheme, oil hydraulic motor 6 is fixed displacement motor, can realize the apolegamy of the interior speed of a motor vehicle more among a small circle.
Also can be on oil hydraulic motor 6 integrated proportional control valve II 11, proportional control valve II 11 entry ends are communicated with proportional control variable displacement pump 1 outlet end, proportional control valve II 11 outlet end are communicated with the rotating speed of controlling oil hydraulic motor 6 with the displacement control mechanism that can control oil hydraulic motor 6 discharge capacities, this states in the scheme, oil hydraulic motor 6 is variable displacement motor, can realize the apolegamy of the interior speed of a motor vehicle in a big way.
Native system is integrated multiple function module on its proportional control variable displacement pump 1, oil hydraulic motor 6, and has good expansion performance.Proportional control variable displacement pump 1 is selected the two-way proportional variable displacement pump for use, is integrated with a proportional control valve I2 on it, is used for discharge capacity and the direction of control ratio controlled variable pump 1; Also be integrated with a slippage pump 8, it is mainly used in replenishing the leakage in loop and closed type hydraulic system is forced cooling; Be integrated with a two-way high pressure repairing relief valve 3, the leakage of replenishment system, and limited the Maximum operating pressure of system, whole closed type static pressure walking system is played the effect of overload protection; From hydraulic oil container 10 oil suctions, the fluid of inspiration enters system after filtering through secondary filter 7, guarantees the turbidity test of system's fluid by oil suction oil purifier 9 for an integrated secondary filter 7 on the proportional control variable displacement pump 1 in addition, slippage pump 8.Being integrated with a flushing valve 5(flushing valve 5 on the oil hydraulic motor 6 also can be arranged on the pipeline), during system works, when fluid enters motor 6, enter into the two ends of flushing valve 6, promote flushing valve 5 actions by oil hydraulic motor 6 inlet outlet pressure differentials, closed system fluid is connected by flushing valve 5 and hydraulic oil radiator 4, system's deep fat just can enter oil radiator 4 through flushing valve 5, flow back to hydraulic oil container 10 after the cooling, like this, what slippage pump 8 covered is cold oil, being deep fat and cooling off of discharge, just the pump circulation cooling has been carried out in closed type static pressure traveling loop, the oil temperature in the loop is kept in allowed limits; Oil hydraulic motor 6 can select for use fixed displacement motor also can select variable displacement motor for use, specifically requires to decide according to the speed of a motor vehicle, and velocity range hour is with fixed displacement motor (operating vehicle selects the speed of a motor vehicle of 0～10km/h for use); When scope is big with variable displacement motor (operating vehicle selects the speed of a motor vehicle of 0～20km/h for use); When selecting variable displacement motor for use, an integrated proportional control valve II 11 on the variable displacement motor 6, but system's fluid passing ratio control valve II 11 enters the displacement control mechanism of oil hydraulic motor 6, just can change the size of oil hydraulic motor 6 discharge capacities by control ratio control valve II 11.Aforementioned proportion controlled variable pump 1 is installed on the vehicle power source power taking mouth, oil hydraulic motor 6 is installed on vehicle front and back axle gear box or the operating mode case, ratio handle, display device are installed on the driving position, pressure transducer is installed on the proportional control variable displacement pump 1, temperature transducer is installed on the oil circuit, speed probe is installed on the oil hydraulic motor 6, and wireless ratio handle can be carried for operator, can show on the display device to gather each sensor signal of coming.The ratio handle is used for control ratio control valve I2, and the speed of a motor vehicle that is equivalent to drive a vehicle and the handle of direction by handling wireless ratio handle, make its electrical signal control ratio control valve I2 that provides, and comes the discharge capacity of control ratio variable displacement pump 1 and turns to realize.
Working principle: 1 running of engine-driving proportional control variable displacement pump, drive hydraulic oil and drive oil hydraulic motor 6 rotations, oil hydraulic motor 6 is delivered to travelled by vehicle portion 14 with power by axle gear box, drives vehicle operating.According to the driving operating mode, passing ratio handle control ratio control valve I2, thus discharge capacity and the rotation direction of control ratio controlled variable pump 1 can be controlled rotating speed and the rotation direction of oil hydraulic motor 6, thus reach the purpose of stepless control car speed, direction.In the whole operation process, parameters such as the real-time display line vehicle speed of display device, system pressure, system temperature, the driver can carry out stepless regulated to the speed of a motor vehicle of operation operating mode according to the demonstration situation.
Above-described embodiment is preferred embodiment of the present invention, is not to limit the scope of the present invention, so all equivalences of being done with the described content of claim of the present invention change, all should be included within the claim scope of the present invention.
Claims (4)
1. be with the railroad track operating vehicle of closed type static pressure walking system, comprise car body (12), vehicle frame (13) and walking system, described car body (12) places vehicle frame (13) top, it is characterized in that: described walking system adopts the closed type static pressure walking system, described closed type static pressure walking system comprises proportional control variable displacement pump (1), oil hydraulic motor (6), hydraulic oil container (10), oil suction oil purifier (9), slippage pump (8), flushing valve (5), hydraulic oil radiator (4) and secondary filter (7), described slippage pump (8) entrance point is communicated with hydraulic oil container (10) outlet end by oil suction oil purifier (9) and is used for replenishing the leakage in loop and hydraulic system is forced cooling, slippage pump (8) outlet end is communicated with secondary filter (7) entry end, described secondary filter (7) has two outlet end, one of them outlet end is communicated with proportional control valve I (2) entry end on being integrated in proportional control variable displacement pump (1), its second outlet end is communicated with additional hydraulic system leakage oil with high pressure repairing relief valve (3) entrance point, described proportional control variable displacement pump (1) outlet end is communicated with oil hydraulic motor (6) entry end, described proportional control valve I (2) outlet end is communicated with the displacement control mechanism that can control proportional control variable displacement pump (1) discharge capacity and rotation direction, the hydraulic oil that proportional variable pump (1) is discharged enters the rotating speed of oil hydraulic motor (6) control oil hydraulic motor (6) and turns to, described oil hydraulic motor (6) outlet end power is delivered to travelled by vehicle portion (14) control operating vehicle's traveling speed and direction by axle gear box, wherein, described oil hydraulic motor (6) is gone up integrated flushing valve (5), hydraulic oil enters into flushing valve (5) two ends when entering oil hydraulic motor (6), described oil hydraulic motor (6) inlet outlet pressure differential promotes flushing valve (5) action makes hydraulic system oil liquid connect by flushing valve (5) and hydraulic oil radiator (4) entry end, and described hydraulic oil radiator (4) outlet end is communicated with hydraulic oil container (10) entry end.
2. the railroad track operating vehicle of band closed type static pressure walking system according to claim 1, it is characterized in that: described oil hydraulic motor (6) is fixed displacement motor, and operating vehicle's traveling speed is matched in 0～10km/h scope.
3. the railroad track operating vehicle of band closed type static pressure walking system according to claim 1, it is characterized in that: also be integrated with proportional control valve II (11) on the described oil hydraulic motor (6), described proportional control valve II (11) entry end is communicated with proportional control variable displacement pump (1) outlet end, and proportional control valve II (11) outlet end is communicated with the displacement size of control oil hydraulic motor (6) with the displacement control mechanism that can control oil hydraulic motor (6).
4. the railroad track operating vehicle of band closed type static pressure walking system according to claim 3, it is characterized in that: described oil hydraulic motor (6) is variable displacement motor, and operating vehicle's traveling speed is matched in 0～20km/h scope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101393662A CN103244476A (en) | 2013-04-18 | 2013-04-18 | Railway track operating vehicle with closed static-pressure travelling system |
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| CN2013101393662A CN103244476A (en) | 2013-04-18 | 2013-04-18 | Railway track operating vehicle with closed static-pressure travelling system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302073A (en) * | 2018-03-26 | 2018-07-20 | 徐工集团工程机械有限公司 | A kind of automobile-used impeller rotating hydraulic system of sand throwing fire extinguishing |
| CN109139588A (en) * | 2018-11-09 | 2019-01-04 | 徐工集团工程机械有限公司 | Hydraulic power system and the dual-purpose working truck of rail |
| CN110630386A (en) * | 2019-09-30 | 2019-12-31 | 潍柴动力股份有限公司 | Engine constant rotating speed proportional control switching system |
| CN114321052A (en) * | 2022-01-18 | 2022-04-12 | 天津捷强动力装备股份有限公司 | Hydraulic power system of shallow sea cable burying equipment |
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| EP1006298A2 (en) * | 1994-11-09 | 2000-06-07 | Komatsu Ltd. | Speed change control method of hydraulic driving apparatus for vehicles and speed changing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302073A (en) * | 2018-03-26 | 2018-07-20 | 徐工集团工程机械有限公司 | A kind of automobile-used impeller rotating hydraulic system of sand throwing fire extinguishing |
| CN109139588A (en) * | 2018-11-09 | 2019-01-04 | 徐工集团工程机械有限公司 | Hydraulic power system and the dual-purpose working truck of rail |
| CN110630386A (en) * | 2019-09-30 | 2019-12-31 | 潍柴动力股份有限公司 | Engine constant rotating speed proportional control switching system |
| CN114321052A (en) * | 2022-01-18 | 2022-04-12 | 天津捷强动力装备股份有限公司 | Hydraulic power system of shallow sea cable burying equipment |
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Application publication date: 20130814 |