CN204978620U - Loader walking braking energy retrieve and auxiliary driving means - Google Patents
Loader walking braking energy retrieve and auxiliary driving means Download PDFInfo
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- CN204978620U CN204978620U CN201520715406.8U CN201520715406U CN204978620U CN 204978620 U CN204978620 U CN 204978620U CN 201520715406 U CN201520715406 U CN 201520715406U CN 204978620 U CN204978620 U CN 204978620U
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- way valve
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Abstract
The utility model discloses a loader walking braking energy retrieve and auxiliary driving means, including pump motor, three -position four -way valve, energy storage ware, overflow valve and oil tank, wherein, the pump motor can two way operation, and the discharge capacity is variable, this scheme adopts tribit cross direction valve as main control valve, and switching through tribit cross direction valve realizes the connection status of two hydraulic fluid ports and the energy storage ware of pump motor to realize the two way operation of energy recuperation and auxiliary drive. The switching effect of three -position four -way valve is passed through to this scheme, and the energy storage ware is in twice duty cycle work, twice tapping of twice topping up promptly. So as to retrieves more braking energy, and is energy -saving better.
Description
Technical field
The utility model belongs to loader hydraulic control technology field, is specifically related to a kind of loader walking Brake energy recovery and auxiliary drive.
Background technology
Conventional load machine adopts parallel hydraulic hybrid power system usually, as shown in Figure 1, the drive system of parallel-connection type hybrid power loader is primarily of formations such as diesel engine, turbine transformer, change speed gear box, hydraulic pump/motor, hydraulic accumulator, boom cylinder, torque couplings, dump rams for its general design.
The power of its diesel engine has two parts to flow to: a part drives traveling mechanism by turbine transformer and change-speed box, and realize loader and travel, another part drives oil cylinder by oil pump, realizes turning to and loading work.Hydraulic pump/motor, hydraulic accumulator etc. form hydraulic regenerating system, form dual power source and drive together with diesel engine.When mechanical loader braking, power-transfer clutch disconnects, and operating mode that hydraulic pump/motor works in " pump ", provides regenerative brake torque, simultaneously stability braking energy, and be stored in energy storage; When loader starts, operating mode that hydraulic pump/motor then works in " motor ", release hydraulic energy provides auxiliary power for loader, realizes the utilization again of complementary energy; When loader spading, operating mode that hydraulic pump/motor works in " motor ", provides auxiliary traction power, avoids driving engine to turn round phenomenon, makes it work in best fuel-economy district.
There is following defect in traditional scheme:
Although the program solves the problem of vehicle to run Brake energy recovery and recycling, can only play a role on of a vehicle direction of travel, be generally used for working direction.That is, when braking under vehicle advance motoring condition, braking energy can be recovered in energy storage and store.When vehicle rollback starts, the energy in energy storage is released the driving participating in vehicle.And in another direction (braking under retrogressing motoring condition and the startup of working direction), existing scheme can not play a role.
Utility model content
The utility model improves further on the basis of traditional scheme, and propose a kind of can reclaim and the scheme of assistive drive by bidirectional energy completely newly, the technical solution of the utility model is as follows:
A kind of loader walking Brake energy recovery and auxiliary drive, comprise pump motor, three-position four-way valve, energy storage, by pass valve and fuel tank, and wherein, pump motor can two-way operation, and discharge capacity is variable;
Two hydraulic fluid ports of described pump motor are connected to two hydraulic fluid ports of three-position four-way valve, and two other hydraulic fluid port of three-position four-way valve is connected with energy storage and fuel tank respectively;
Described three-position four-way valve has three working positions, and when three-position four-way valve is in meta, two hydraulic fluid ports of pump motor and energy storage, fuel tank are all obstructed; When three-position four-way valve is in upper, a hydraulic fluid port of pump motor is communicated with energy storage by three-position four-way valve, and another hydraulic fluid port of pump motor is communicated with fuel tank by three-position four-way valve; When three-position four-way valve is in bottom, two hydraulic fluid ports of pump motor and the connected relation of energy storage and fuel tank and upper time connected relation exchange;
Energy storage is connected with the import of by pass valve, and two outlets of by pass valve are connected with fuel tank respectively.
The principle of work of this programme is as follows:
When vehicle at the uniform velocity advances traveling, the energy regenerating described in this programme and the three-position four-way valve in assistant drive system are in meta, and now, pump motor does not work.
When vehicle starts to brake under at the uniform velocity forward travel state, the working position of three-position four-way valve is transitioned into bottom from meta, now, pump motor is started working under the driving of vehicle inertia, the hydraulic oil that the oil outlet of pump motor is discharged enters energy storage by three-position four-way valve, and another hydraulic fluid port of pump motor is by three-position four-way valve oil suction from fuel tank.When the pressure in energy storage reaches the response pressure of by pass valve setting, by pass valve is opened, and the pressure in restriction energy storage continues to rise.Brake energy recovery process when this process is advance.
When braking stopping, the working position of three-position four-way valve returns to meta from bottom, and now pump motor quits work, and two hydraulic fluid port is all closed by three-position four-way valve.Hydraulic oil is not had to pass in and out in energy storage.Now, energy storage is in topping up state, and its energy comes from the kinetic energy that vehicle advance travels.
When vehicle retreats startup from quiescence, the mode of operation of three-position four-way valve is transitioned into bottom from meta, and the hydraulic oil in energy storage enters pump motor by three-position four-way valve, driving pump motor operations, pump motor drives vehicle wheel rotation, realizes retreating assistive drive.The hydraulic oil that pump motor is discharged gets back to fuel tank by three-position four-way valve.This process retreats assistive drive process when starting.
When vehicle rollback traveling reaches certain speed, the hydraulic oil release in energy storage is complete, and now, the working position of three-position four-way valve returns to meta from bottom, and pump motor quits work.
When vehicle is when at the uniform velocity fallback state starts to brake, the working position of three-position four-way valve is transitioned into upper from meta, now, pump motor is started working under the driving of vehicle inertia, the hydraulic oil that the oil outlet of pump motor is discharged enters energy storage by three-position four-way valve, and another hydraulic fluid port of pump motor is by three-position four-way valve oil suction from fuel tank.When the pressure in energy storage reaches the response pressure of by pass valve setting, by pass valve is opened, and the pressure in restriction energy storage continues to rise.Brake energy recovery process when this process is retrogressing.
When braking stopping, the working position of three-position four-way valve returns to meta from upper, and now pump motor quits work, and two hydraulic fluid port is all closed by three-position four-way valve.Hydraulic oil is not had to pass in and out in energy storage.Now, energy storage is in topping up state, and its energy comes from the kinetic energy that vehicle rollback travels.
When vehicle advances startup from quiescence, the mode of operation of three-position four-way valve is transitioned into upper from meta, the hydraulic oil in energy storage enters pump motor by three-position four-way valve, driving pump motor operations, pump motor drives vehicle wheel rotation, realizes advance assistive drive.The hydraulic oil that pump motor is discharged gets back to fuel tank by three-position four-way valve.This process is the assistive drive process of advancing when starting.
When vehicle advance traveling reaches certain speed, the hydraulic oil release in energy storage is complete, and now, the working position of three-position four-way valve returns to meta from upper, and pump motor quits work.
More than complete a complete working cycle.
The beneficial effects of the utility model are as follows:
In traditional scheme, two hydraulic fluid ports of pump motor and the connection mode of energy storage can not change, and thus system can only one-way only operation.This programme adopts 3-position 4-way direction valve as main control valve, realizes two hydraulic fluid ports of pump motor and the coupled condition of energy storage, thus realize the two-way operation of energy regenerating and assistive drive by the switching of 3-position 4-way direction valve.。
In traditional scheme, energy storage only works once in a working cycle, i.e. a topping up tapping.In this programme, by the switching effect of three-position four-way valve, energy storage a working cycle job twice, i.e. twice topping up, twice tapping.Thus more braking energy can be reclaimed, better energy-saving.
Accompanying drawing explanation
Fig. 1 is conventional parallel formula hydraulic hybrid power loader schematic diagram;
Fig. 2 is the utility model structural representation.
Description of reference numerals: pump motor 1, three-position four-way valve 2, energy storage 3, by pass valve 4, fuel tank 5.
Detailed description of the invention
Below with reference to the drawings and specific embodiments, the utility model is described in further details.
As shown in Figure 2, loader of the present utility model walking Brake energy recovery and auxiliary drive, comprise pump motor 1, three-position four-way valve 2, energy storage 3, by pass valve 4 and fuel tank 5, and wherein, pump motor 1 can two-way operation, and discharge capacity is variable;
Two hydraulic fluid ports of described pump motor 1 are connected to two hydraulic fluid ports of three-position four-way valve 2, and two other hydraulic fluid port of three-position four-way valve 2 is connected with energy storage 3 and fuel tank 5 respectively;
Described three-position four-way valve 2 has three working positions, and when three-position four-way valve 2 is in meta, two hydraulic fluid ports of pump motor 1 and energy storage 3, fuel tank 5 are all obstructed; When three-position four-way valve 2 is in upper, a hydraulic fluid port of pump motor 1 is communicated with energy storage by three-position four-way valve 2, and another hydraulic fluid port of pump motor 1 is communicated with fuel tank 5 by three-position four-way valve 2; When three-position four-way valve 2 is in bottom, two hydraulic fluid ports of pump motor and the connected relation of energy storage 3 and fuel tank 5 and upper time connected relation exchange;
Energy storage 3 is connected with the import of by pass valve 4, and two outlets of by pass valve 4 are connected with fuel tank respectively.
The working cycle that one, this device is complete is as follows:
When vehicle at the uniform velocity advances traveling, the energy regenerating described in this programme and the three-position four-way valve in assistant drive system are in meta, and now, pump motor does not work.
When vehicle starts to brake under at the uniform velocity forward travel state, the working position of three-position four-way valve is transitioned into bottom from meta, now, pump motor is started working under the driving of vehicle inertia, the hydraulic oil that the oil outlet of pump motor is discharged enters energy storage by three-position four-way valve, and another hydraulic fluid port of pump motor is by three-position four-way valve oil suction from fuel tank.When the pressure in energy storage reaches the response pressure of by pass valve setting, by pass valve is opened, and the pressure in restriction energy storage continues to rise.Brake energy recovery process when this process is advance.
When braking stopping, the working position of three-position four-way valve returns to meta from bottom, and now pump motor quits work, and two hydraulic fluid port is all closed by three-position four-way valve.Hydraulic oil is not had to pass in and out in energy storage.Now, energy storage is in topping up state, and its energy comes from the kinetic energy that vehicle advance travels.
When vehicle retreats startup from quiescence, the mode of operation of three-position four-way valve is transitioned into bottom from meta, and the hydraulic oil in energy storage enters pump motor by three-position four-way valve, driving pump motor operations, pump motor drives vehicle wheel rotation, realizes retreating assistive drive.The hydraulic oil that pump motor is discharged gets back to fuel tank by three-position four-way valve.This process retreats assistive drive process when starting.
When vehicle rollback traveling reaches certain speed, the hydraulic oil release in energy storage is complete, and now, the working position of three-position four-way valve returns to meta from bottom, and pump motor quits work.
When vehicle is when at the uniform velocity fallback state starts to brake, the working position of three-position four-way valve is transitioned into upper from meta, now, pump motor is started working under the driving of vehicle inertia, the hydraulic oil that the oil outlet of pump motor is discharged enters energy storage by three-position four-way valve, and another hydraulic fluid port of pump motor is by three-position four-way valve oil suction from fuel tank.When the pressure in energy storage reaches the response pressure of by pass valve setting, by pass valve is opened, and the pressure in restriction energy storage continues to rise.Brake energy recovery process when this process is retrogressing.
When braking stopping, the working position of three-position four-way valve returns to meta from upper, and now pump motor quits work, and two hydraulic fluid port is all closed by three-position four-way valve.Hydraulic oil is not had to pass in and out in energy storage.Now, energy storage is in topping up state, and its energy comes from the kinetic energy that vehicle rollback travels.
When vehicle advances startup from quiescence, the mode of operation of three-position four-way valve is transitioned into upper from meta, the hydraulic oil in energy storage enters pump motor by three-position four-way valve, driving pump motor operations, pump motor drives vehicle wheel rotation, realizes advance assistive drive.The hydraulic oil that pump motor is discharged gets back to fuel tank by three-position four-way valve.This process is the assistive drive process of advancing when starting.
When vehicle advance traveling reaches certain speed, the hydraulic oil release in energy storage is complete, and now, the working position of three-position four-way valve returns to meta from upper, and pump motor quits work.
Above the utility model is described in detail; for one of ordinary skill in the art; according to the thought of the utility model embodiment; all can do respective change according to actual needs; as long as have employed the various improvement that technical solutions of the utility model are carried out, all within protection domain of the present utility model.
Claims (1)
1. loader walking Brake energy recovery and an auxiliary drive, is characterized in that, comprise pump motor, three-position four-way valve, energy storage, by pass valve and fuel tank; Wherein, pump motor can two-way operation, and discharge capacity is variable;
Two hydraulic fluid ports of described pump motor are connected to two hydraulic fluid ports of three-position four-way valve, and two other hydraulic fluid port of three-position four-way valve is connected with energy storage and fuel tank respectively;
Described three-position four-way valve has three working positions, and when three-position four-way valve is in meta, two hydraulic fluid ports of pump motor and energy storage, fuel tank are all obstructed; When three-position four-way valve is in upper, a hydraulic fluid port of pump motor is communicated with energy storage by three-position four-way valve, and another hydraulic fluid port of pump motor is communicated with fuel tank by three-position four-way valve; When three-position four-way valve is in bottom, two hydraulic fluid ports of pump motor and the connected relation of energy storage and fuel tank and upper time connected relation exchange;
Described energy storage is connected with the import of described by pass valve, and two outlets of by pass valve are connected with fuel tank respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520715406.8U CN204978620U (en) | 2015-09-16 | 2015-09-16 | Loader walking braking energy retrieve and auxiliary driving means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520715406.8U CN204978620U (en) | 2015-09-16 | 2015-09-16 | Loader walking braking energy retrieve and auxiliary driving means |
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| Publication Number | Publication Date |
|---|---|
| CN204978620U true CN204978620U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520715406.8U Expired - Fee Related CN204978620U (en) | 2015-09-16 | 2015-09-16 | Loader walking braking energy retrieve and auxiliary driving means |
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| CN (1) | CN204978620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010031A (en) * | 2017-03-13 | 2017-08-04 | 同济大学 | The characteristic parameter matching method of key componentses in a kind of load mechanism kinetic energy reclaiming system |
-
2015
- 2015-09-16 CN CN201520715406.8U patent/CN204978620U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010031A (en) * | 2017-03-13 | 2017-08-04 | 同济大学 | The characteristic parameter matching method of key componentses in a kind of load mechanism kinetic energy reclaiming system |
| CN107010031B (en) * | 2017-03-13 | 2019-05-14 | 同济大学 | The characteristic parameter matching method of key components in a kind of load mechanism kinetic energy reclaiming system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20160916 |
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| CF01 | Termination of patent right due to non-payment of annual fee |