CN203755360U - Hybrid power excavator - Google Patents
Hybrid power excavator Download PDFInfo
- Publication number
- CN203755360U CN203755360U CN201420122093.0U CN201420122093U CN203755360U CN 203755360 U CN203755360 U CN 203755360U CN 201420122093 U CN201420122093 U CN 201420122093U CN 203755360 U CN203755360 U CN 203755360U
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- motor
- generator
- unidirectional control
- pump
- pump motor
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Abstract
The utility model relates to a hybrid power excavator. The hybrid power excavator comprises an engine, a gear pump, a first generator/motor, a second generator/motor, a pump motor, a first unidirectional control reversing valve, a second unidirectional control reversing valve, a pressure sensor, an energy accumulator, an oil tank, a generator and a rotary motor. The pump motor, the first unidirectional control reversing valve, the pressure sensor, the energy accumulator and the second unidirectional control reversing valve are connected in sequence, the second unidirectional control reversing valve is connected with the pump motor to form a hydraulic circuit, hydraulic oil is driven from the oil tank by the pump motor to pass through the pump motor, the first unidirectional control reversing valve and the pressure sensor and finally reach the energy accumulator, and the hydraulic oil in the energy accumulator with the pressure increased is discharged into the oil tank directly through the second unidirectional control reversing valve and the pump motor and drives the pump motor to rotate. According to the hybrid power excavator, recycled energy can be converted into hydraulic energy through electric energy to be stored and utilized, and cost and overall oil consumption are reduced.
Description
Technical field
The utility model relates to a kind of engineering machinery with control system, is specifically related to a kind of hybrid excavator that can recover energy.
Background technology
The scope of application of hydraulic crawler excavator is wide, and energy loss is many, and the energy-conservation of research hydraulic crawler excavator has very large economic worth and a very important realistic meaning.Traditional hydraulic crawler excavator often reaches braking effect by reverse back pressure when braking or underloading, and the gyration inertia of slew gear is large, when retarding braking, can discharge a large amount of heats; When excavator is worked in underloading, engine output can not be absorbed by gear pump completely, causes energy dissipation.
At present, hybrid excavator is a kind of comparatively advanced technology, the power mode that it adopts oil electricity to mix, and wherein some is also simultaneously with slew gear energy-recuperation system, inertia potential energy to slew gear reclaims, and is converted to electrical power storage in energy-storage travelling wave tube.But because its energy way of recycling is single, capacity usage ratio is not high, has caused certain waste.
Utility model content
For the problems referred to above, the utility model can convert hydraulic energy to by electric energy for the energy reclaiming and preserves and be used, and can recover energy in a big way, prevent waste, and then lower cost and complete machine oil consumption.
For achieving the above object, concrete technical scheme is as follows:
A hybrid excavator, it comprises motor, gear pump, the first generator/motor, the second generator/motor, pump motor, the first unidirectional control reversal valve, the second unidirectional control reversal valve, pressure sensor, accumulator, fuel tank, generator, rotary motor, described motor, gear pump, the first generator/motor, the second generator/motor is connected successively with pump motor, described rotary motor, generator is connected successively with the second generator/motor, described pump motor, described the first unidirectional control reversal valve, pressure sensor, accumulator is connected successively with the second unidirectional control reversal valve, and the second unidirectional control reversal valve connects pump motor and forms hydraulic circuit, and described pump motor connects described fuel tank, and described pump motor drives hydraulic oil via described pump motor from described fuel tank, the first unidirectional control reversal valve, pressure sensor is to described accumulator, and the hydraulic oil in the described accumulator after boosting is directly via the second unidirectional control reversal valve, described pump motor is disposed to described fuel tank and drives described pump motor rotation.
Further, between described the first generator/motor and the second generator/motor and generator and the second generator/motor, be also provided with inversion/rectifier.
Further, also comprise controller, described controller is connected with pressure sensor with described generator, the first generator/motor, inversion/rectifier, the second generator/motor, pump motor, the first unidirectional control reversal valve, the second unidirectional control reversal valve respectively.
Further, between described the second generator/motor and described pump motor, be also provided with transmission device.
The beneficial effects of the utility model are:
1, these two kinds of fluid sources of the fluid that the high-voltage oil liquid of accumulator and gear pump provide are also a kind of embodiment of hybrid power in some sense.Hydraulic accumulator power density is large, has solved the low problem of electric hybrid powering energy recovery rate, has reduced a high cost difficult problem that adopts super capacitor to recover energy.
2, the recycling of slew gear inertia potential energy, by the conversion of electric energy, can be reclaimed the inertia potential energy of slew gear in a big way.
3, when accumulator, stored after the energy that braking or underloading reclaim, can, when excavator heavy duty, to system, supplement the high-voltage oil liquid in accumulator again, alleviate the load pressure of motor, the energy that motor provides is reduced, reach energy-conservation effect, and then lower complete machine oil consumption.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.
Fig. 1 is the structural representation of the utility model embodiment.In figure:
1-motor, 2-gear pump, 3-the first generator/motor, 4-inversion/rectifier, 5-generator, 6-rotary motor, 8-the second generator/motor, 9-transmission device, 10-pump motor, 11-fuel tank, the unidirectional control reversal valve of 12-first, the unidirectional control reversal valve of 13-second, 14-pressure sensor, 15-accumulator, 16-controller.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated.
With reference to Fig. 1, hybrid excavator of the present utility model comprises motor 1, gear pump 2, the first generator/motor 3, the second generator/motor 8, the unidirectional control reversal valve 13 of the unidirectional control reversal valve 12, second of pump motor 10, first, pressure sensor 14, accumulator 15, fuel tank 11, generator 5, rotary motor 6.Described motor 1, gear pump 2, the first generator/motor 3, the second generator/motor 8 are connected successively with pump motor 10.Described rotary motor 6, generator 5 and the second generator/motor 8 are connected successively.Described pump motor 10, described the first unidirectional control reversal valve 12, pressure sensor 14, accumulator 15 are connected successively with the second unidirectional control reversal valve 13, described the second unidirectional control reversal valve 13 connects described pump motor 10 and forms hydraulic circuit, in hydraulic circuit, be provided with hydraulic oil, pump motor 10 also connects fuel tank 11.
Pump motor 10 from described fuel tank 11 drive hydraulic oil via the unidirectional control reversal valve 12 of described pump motor 10, first, pressure sensor 14 to described accumulator 15, the hydraulic oil in the described accumulator 15 after boosting is directly disposed to described fuel tank 11 via the second unidirectional control reversal valve 13, described pump motor 10 and drives described pump motor 10 rotations.
Hybrid excavator of the present utility model also comprises:
The first energy way of recycling:
Controller 16 detects accumulator 15 by pressure sensor 14 does not have storage power, or the energy storing seldom; When rotary motor 6 braking, rotating inertia potential energy drives generator 5.Controller 16 is controlled generator 5 generatings, and the electric energy that electric energy is reverse into burning voltage by inversion/rectifier 4 drives the second generator/motor 8, the second generator/motors 8 to drive pump motor 10 by transmission device 9.Controller 16 is opened the first unidirectional control reversal valve 12, and pump motor 10 becomes hydraulic energy to be stored in accumulator 15 electric energy conversion.Above process has completed the recovery of the inertia potential energy of rotary motor 6;
The second energy way of recycling:
Controller 16 detects accumulator 15 by pressure sensor 14 does not have storage power, or the energy storing seldom; When excavator is worked at light duty, controller 16 is controlled the first generator/motor 3 generatings, the electric energy that electric energy is reverse into burning voltage by inversion/rectifier 4 drives the second generator/motor 8, the second generator/motors 8 to drive pump motor 10 by transmission device 9.Controller 16 is opened the first unidirectional control reversal valve 12, and pump motor 10 becomes hydraulic energy to be stored in accumulator 15 electric energy conversion.Above process has completed the recovery of motor 1 excess energy;
Energy delivery mode:
When excavator is when severe duty is worked, if detecting accumulator 15 by pressure sensor 14, controller 16 stores more energy; Controller 16 is opened the second unidirectional control reversal valve 13, the hydraulic energy that accumulator 15 stores is by pump motor 10, pump motor 10 drives the second generator/motor 8 generatings, the electric energy that electric energy is reverse into burning voltage by inversion/rectifier 4 drives the first generator/motor 3, the first generator/motors 3 and the common driving gear pump 2 of motor 1.Above process has completed the release of accumulator 15 energy;
When energy reclaims, the first electric generator/electric motor 3 is used as generator, and the second electric generator/electric motor 8 is used as motor, and pump motor 10 uses as hydraulic pump.
When energy discharges, the first electric generator/electric motor 3 is used as motor, and the second electric generator/electric motor 8 is used as generator, and pump motor 10 uses as hydraulic motor.
Above specific embodiment of the utility model be have been described in detail, but it is just as example, the utility model is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the utility model is carried out and alternative also all among category of the present utility model.Therefore,, not departing from the equalization conversion of doing under spirit and scope of the present utility model and revising, all should be encompassed in scope of the present utility model.
Claims (5)
1. a hybrid excavator, it comprises motor (1), gear pump (2), the first generator/motor (3), the second generator/motor (8), pump motor (10), the first unidirectional control reversal valve (12), the second unidirectional control reversal valve (13), pressure sensor (14), accumulator (15), fuel tank (11), generator (5), rotary motor (6), is characterized in that: described motor (1), described gear pump (2), described the first generator/motor (3), described the second generator/motor (8) is connected successively with described pump motor (10), described rotary motor (6), described generator (5) is connected successively with described the second generator/motor (8), described pump motor (10), described the first unidirectional control reversal valve (12), described pressure sensor (14), described accumulator (15) is connected successively with described the second unidirectional control reversal valve (13), and described the second unidirectional control reversal valve (13) connects described pump motor (10) and forms hydraulic circuit, and described pump motor (10) also connects described fuel tank (11),
Described pump motor (10) from described fuel tank (11) drive hydraulic oil via described pump motor (10), the first unidirectional control reversal valve (12), pressure sensor (14) to described accumulator (15), the hydraulic oil in the described accumulator (15) after boosting is directly disposed to described fuel tank (11) via the second unidirectional control reversal valve (13), described pump motor (10) and drives described pump motor (10) rotation.
2. hybrid excavator as claimed in claim 1, is characterized in that, between described the first generator/motor (3) and the second generator/motor (8) and generator (5) and the second generator/motor (8), is also provided with inversion/rectifier (4).
3. hybrid excavator as claimed in claim 2, it is characterized in that, also comprise controller (16), described controller (16) is connected with pressure sensor (11) with described generator (5), the first generator/motor (3), inversion/rectifier (4), the second generator/motor (8), pump motor (10), the first unidirectional control reversal valve (12), the second unidirectional control reversal valve (13) respectively.
4. the hybrid excavator as described in claim 1-3 any one, is characterized in that, between described the second generator/motor (8) and described pump motor (10), is also provided with transmission device (9).
5. the hybrid excavator as described in claim 1-3 any one, it is characterized in that, when energy reclaims, the first electric generator/electric motor (3) is used as generator, the second electric generator/electric motor (8) is used as motor, and pump motor (10) uses as hydraulic pump;
When energy discharges, the first electric generator/electric motor (3) is used as motor, and the second electric generator/electric motor (8) is used as generator, and pump motor (10) uses as hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420122093.0U CN203755360U (en) | 2014-03-19 | 2014-03-19 | Hybrid power excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420122093.0U CN203755360U (en) | 2014-03-19 | 2014-03-19 | Hybrid power excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203755360U true CN203755360U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420122093.0U Expired - Fee Related CN203755360U (en) | 2014-03-19 | 2014-03-19 | Hybrid power excavator |
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| Country | Link |
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| CN (1) | CN203755360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898933A (en) * | 2014-03-19 | 2014-07-02 | 山重建机有限公司 | Hybrid power excavator |
-
2014
- 2014-03-19 CN CN201420122093.0U patent/CN203755360U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898933A (en) * | 2014-03-19 | 2014-07-02 | 山重建机有限公司 | Hybrid power excavator |
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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 |
Granted publication date: 20140806 Termination date: 20150319 |
|
| EXPY | Termination of patent right or utility model |