CN204978255U - Loader walking braking energy retrieve and auxiliary driving means with trailer function - Google Patents
Loader walking braking energy retrieve and auxiliary driving means with trailer function Download PDFInfo
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- CN204978255U CN204978255U CN201520715638.3U CN201520715638U CN204978255U CN 204978255 U CN204978255 U CN 204978255U CN 201520715638 U CN201520715638 U CN 201520715638U CN 204978255 U CN204978255 U CN 204978255U
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- pump motor
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- way valve
- energy storage
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Abstract
The utility model discloses a loader walking braking energy retrieve and auxiliary driving means with trailer function, including pump motor, three -position four -way valve, energy storage ware, overflow valve, oil tank and ooff valve, two hydraulic fluid ports of ooff valve are connected with two hydraulic fluid ports of pump motor respectively, and the ooff valve has two work positions, and the ooff valve can not pass through the ooff valve intercommunication at left side position during operation, two hydraulic fluid ports of pump motor, can communicate through the ooff valve at right side position during operation, two openings of pump motor when the ooff valve. This scheme increases the ooff valve between two hydraulic fluid ports of pump motor, can shield the energy recuperation system under emergent state, and whole car can continuously drive and work, the emergency measure that this scheme increases, simple structure is reliable, and is with low costs.
Description
Technical field
The utility model belongs to loader hydraulic control technology field, is specifically related to a kind of loader with trailer function walking Brake energy recovery and auxiliary drive.
Background technology
Conventional load machine adopts parallel hydraulic hybrid power system usually, its general design 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.
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, but when this energy regenerating and assistant drive system break down, such as electromagnet power-off, hydraulic valve clamping stagnation, pump motor can not variable, energy storage is without pressure etc., any one in these faults all can affect car load, causes car load not travel and to work.Traditional scheme lacks the emergent solution of a fault.
Utility model content
The utility model improves further on the basis of traditional scheme, and propose a kind of brand-new scheme, this programme has fault emergency function, energy-recuperation system break down can not work time, by expeditious measures, traveling and the work of former car can not be affected.The technical solution of the utility model is as follows:
With loader walking Brake energy recovery and the auxiliary drive of trailer function,
Comprise pump motor, three-position four-way valve, energy storage, by pass valve, fuel tank and switch valve;
Described pump motor can two-way operation, and discharge capacity is variable;
Two hydraulic fluid ports of pump motor are connected to two hydraulic fluid ports of three-position four-way valve; Two other hydraulic fluid port of three-position four-way valve is connected with energy storage and fuel tank respectively;
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 exchange;
Energy storage is connected with the import of by pass valve; Two outlets of by pass valve are all connected with fuel tank;
Two hydraulic fluid ports of switch valve are connected with two hydraulic fluid ports of pump motor respectively, and switch valve has two working positions, and switch valve is when left position work, and two hydraulic fluid ports of pump motor are not communicated with by switch valve; When switch valve is in right position work, two openings of pump motor can be communicated with by switch valve.
The principle of work of this programme is as follows:
When energy-recuperation system normally works, switch valve is in left position.In a complete working cycle, the principle of work of energy-recuperation system 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.
It is more than the working cycle that when normally working one is complete.
When energy-recuperation system breaks down, manually, electromagnetism or other modes, switch valve is allowed to be operated in right position.Now, two hydraulic fluid ports of pump motor are directly communicated with by switch valve.No matter pump motor rotates forward or reverses, and is all in idle running.Now, vehicle still can normally travel and work.
The beneficial effects of the utility model are as follows:
In traditional scheme, there is no fault expeditious measures, when energy-recuperation system fault, car load can be caused not work.This programme increases switch valve between two hydraulic fluid ports of pump motor, can shield energy-recuperation system under emergency rating, and car load can continue to travel and work;
The expeditious measures that this programme increases, simple and reliable for structure, cost is low.
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 and switch valve 6.
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, the walking Brake energy recovery of the loader with trailer function of the present utility model and auxiliary drive,
Comprise pump motor 1, three-position four-way valve 2, energy storage 3, by pass valve 4, fuel tank 5 and switch valve 6;
Described pump motor can two-way operation, and discharge capacity is variable;
Two hydraulic fluid ports of pump motor 1 are connected to two hydraulic fluid ports of three-position four-way valve 2; Two other hydraulic fluid port of three-position four-way valve 2 is connected with energy storage 3 and fuel tank 5 respectively;
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 3 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 1 and the connected relation of energy storage 3 and fuel tank 5 and upper time exchange;
Energy storage 3 is connected with the import of by pass valve 4; Two outlets of by pass valve 4 are all connected with fuel tank;
Two hydraulic fluid ports of switch valve 6 are connected with two hydraulic fluid ports of pump motor 1 respectively, and switch valve 6 has two working positions, and switch valve 6 is when left position work, and two hydraulic fluid ports of pump motor 1 are not communicated with by switch valve; When switch valve 6 is in right position work, two openings of pump motor 1 can be communicated with by switch valve.
The principle of work of this programme is as follows:
When energy-recuperation system normally works, switch valve is in left position.In a complete working cycle, the principle of work of energy-recuperation system 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.
It is more than the working cycle that when normally working one is complete.
When energy-recuperation system breaks down, manually, electromagnetism or other modes, switch valve is allowed to be operated in right position.Now, two hydraulic fluid ports of pump motor are directly communicated with by switch valve.No matter pump motor rotates forward or reverses, and is all in idle running.Now, vehicle still can normally travel and work.
This programme has fault emergency function, energy-recuperation system break down can not work time, by expeditious measures, traveling and the work of former car can not be affected.
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., with loader walking Brake energy recovery and the auxiliary drive of trailer function, it is characterized in that, comprise pump motor, three-position four-way valve, energy storage, by pass valve, fuel tank and switch valve;
Described 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; 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 exchange;
Described energy storage is connected with the import of described by pass valve; Two outlets of by pass valve are all connected with fuel tank;
Two hydraulic fluid ports of described switch valve are connected with two hydraulic fluid ports of pump motor respectively, and switch valve has two working positions, and switch valve is when left position work, and two hydraulic fluid ports of pump motor are not communicated with by switch valve; When switch valve is in right position work, two openings of pump motor can be communicated with by switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520715638.3U CN204978255U (en) | 2015-09-16 | 2015-09-16 | Loader walking braking energy retrieve and auxiliary driving means with trailer function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520715638.3U CN204978255U (en) | 2015-09-16 | 2015-09-16 | Loader walking braking energy retrieve and auxiliary driving means with trailer function |
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| Publication Number | Publication Date |
|---|---|
| CN204978255U true CN204978255U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520715638.3U Expired - Fee Related CN204978255U (en) | 2015-09-16 | 2015-09-16 | Loader walking braking energy retrieve and auxiliary driving means with trailer function |
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| CN (1) | CN204978255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559416A (en) * | 2017-09-30 | 2018-01-09 | 中车大连机车研究所有限公司 | A kind of hydraulic transmission gear box multi-state controller for supplying oil and its control method |
-
2015
- 2015-09-16 CN CN201520715638.3U patent/CN204978255U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559416A (en) * | 2017-09-30 | 2018-01-09 | 中车大连机车研究所有限公司 | A kind of hydraulic transmission gear box multi-state controller for supplying oil and its control method |
| CN107559416B (en) * | 2017-09-30 | 2023-02-17 | 中国国家铁路集团有限公司 | Multi-working-condition oil supply control device for hydraulic transmission case and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160120 Termination date: 20160916 |