CN203655796U - Electro-hydraulic system for recovering and releasing energy during slewing braking of engineering machine - Google Patents
Electro-hydraulic system for recovering and releasing energy during slewing braking of engineering machine Download PDFInfo
- Publication number
- CN203655796U CN203655796U CN201320865985.5U CN201320865985U CN203655796U CN 203655796 U CN203655796 U CN 203655796U CN 201320865985 U CN201320865985 U CN 201320865985U CN 203655796 U CN203655796 U CN 203655796U
- Authority
- CN
- China
- Prior art keywords
- motor
- valve
- solenoid directional
- directional control
- communicated
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses an electro-hydraulic system for recovering and releasing energy during slewing braking of an engineering machine. The electro-hydraulic system comprises an energy recovery and release mechanism and a control unit, wherein the control unit comprises a controller and a first pressure sensor, and the energy recovery and release mechanism comprises a hydraulic energy storage unit, an electromagnetic reversing valve, a hydraulic motor, a sequence valve, a first one-way valve and a second one-way valve. The electro-hydraulic system for recovering and releasing energy during the slewing braking of the engineering machine has the advantages that the kinetic energy produced during the slewing braking of the engineering machine can be stored through the hydraulic energy storage unit, the controller can control the electromagnetic reversing valve according to the load of a main variable-capacity pump to release the energy stored in the hydraulic energy storage unit to drive the hydraulic motor to provide torque for the main variable-capacity pump, the fuel consumption of an engine is reduced and the working efficiency of the engineering machine is improved.
Description
Technical field
The utility model relates to a kind of system reclaiming for engineering machinery energy, relates in particular to a kind of electrohydraulic system that reclaims and discharge for engineering machinery rotary braking energy.
Background technique
Along with scientific and technological development, the consumption of the energy and the deterioration of environment have become global problem, and at present, countries in the world are all placed on very important position by energy-saving and emission-reduction work.Engineering machinery in use energy consumption is large, and exhaust emission is many, and use amount is very big, and the waste on the energy and the pollution of environment bring very large impact, and therefore the power saving tool of research engineering machinery is of great significance.There is Turning course frequently in many engineering machinery, and in turning course, because load inertia is larger, in braking process, can discharge a large amount of energy, in current most turning engineering machineries, this part energy is to consume by spill losses, and this has not only caused the waste of energy, the heat that overflow produces also can shorten the working life of device, even the stability of system is impacted.
At present, the form of Construction Machinery Energy Saving is mainly mixed power.Wherein, oily electric hybrid mode is simple in structure because of it, is easy to realize, and becomes the principal mode of mixed power.Oil electric mixed dynamic is electrical power storage by the transformation of energy of engineering machinery rotary braking or oil hydraulic cylinder decline.When release, then be mechanical energy by this part Conversion of Energy, for motor provides power.Converting electric energy to needs super capacitor or storage battery, and because the specific power of super capacitor and storage battery is little, and cost is very high, and under frequent rotating operating mode, effect is not good enough.
Model utility content
The electrohydraulic system that the utility model provides a kind of energy for engineering machinery rotary braking to reclaim and discharge, the energy producing can be automatically by engineering machinery rotary braking time stores by hydraulic energy storage unit, controller discharges according to main pump demand control the first solenoid directional control valve the energy that hydraulic energy storage unit is stored, drive variable hydraulic motor to provide moment of torsion for main pump, to reduce the bearing power of motor, reduce the oil consumption of engineering machinery, improve the working efficiency of engineering machinery.
For achieving the above object, technical solution adopted in the utility model is: the utility model reclaims for the energy of engineering machinery rotary braking and the electrohydraulic system of release comprises energy recovery and releasing mechanism and control unit, described control unit comprises controller and the first pressure transducer, energy reclaims and releasing mechanism comprises hydraulic energy storage unit, the first solenoid directional control valve, oil hydraulic motor, sequence valve, the first one-way valve and the second one-way valve, described oil hydraulic motor is coaxially connected with the master variable pump of engineering machinery, the A mouth of oil hydraulic motor is communicated with a port of the first solenoid directional control valve, another port of the first solenoid directional control valve, hydraulic energy storage unit, the outlet of sequence valve and the first pressure transducer are interconnected, the B mouth of oil hydraulic motor is communicated with the fuel tank of engineering machinery, the entrance while of sequence valve and the outlet of the first one-way valve, the outlet of the second one-way valve is communicated with, the entrance of the first one-way valve is communicated with a hydraulic fluid port of the rotary motor of engineering machinery, the entrance of the second one-way valve (13) is communicated with another hydraulic fluid port of the rotary motor of engineering machinery, controller is electrically connected with the first pressure transducer, oil hydraulic motor, the first solenoid directional control valve respectively,
In the time that the first pressure transducer detects that the force value of hydraulic energy storage unit is more than or equal to the Minimum operating pressure value of hydraulic energy storage unit, controller makes the first solenoid directional control valve obtain electric-opening, and the high pressure oil in hydraulic energy storage unit discharges through oil hydraulic motor; The force value that hydraulic energy storage unit detected when the first pressure transducer is during lower than the Minimum operating pressure value of hydraulic energy storage unit, and controller is closed the first solenoid directional control valve power-off, with the discharge capacity of Time Controller regulator solution pressure motor to minimum injection rate value.
The another kind of electrohydraulic system for the recovery of engineering machinery rotary braking energy and release of the utility model comprises energy recovery and releasing mechanism and control unit, described control unit comprises controller, the first pressure transducer and the second pressure transducer, energy reclaims and releasing mechanism comprises hydraulic energy storage unit, the first solenoid directional control valve, the second solenoid directional control valve, oil hydraulic motor, sequence valve, the first one-way valve, the second one-way valve, the 3rd one-way valve and the 4th one-way valve, oil hydraulic motor is coaxially connected with the pump shaft of the master variable pump of engineering machinery, the A mouth while of oil hydraulic motor and a port of the first solenoid directional control valve, the outlet of the 4th one-way valve is communicated with, another port of the first solenoid directional control valve, hydraulic energy storage unit, the outlet of sequence valve, the outlet of the 3rd one-way valve and the first pressure transducer are interconnected, the B mouth of oil hydraulic motor is communicated with the P mouth of the second solenoid directional control valve, the A mouth of the second solenoid directional control valve is communicated with the entrance of the 3rd one-way valve, the B mouth of the second solenoid directional control valve is communicated with the fuel tank of engineering machinery, entrance while and first one-way valve of sequence valve, the outlet of the second one-way valve is communicated with, the entrance of the first one-way valve is communicated with a hydraulic fluid port of the rotary motor of engineering machinery, the entrance of the second one-way valve is communicated with another hydraulic fluid port of described rotary motor, the second pressure transducer is communicated with the master variable delivery side of pump of engineering machinery, controller is electrically connected with the first pressure transducer, the second pressure transducer, oil hydraulic motor, the first solenoid directional control valve, the second solenoid directional control valve respectively,
The master variable delivery side of pump pressure that controller can detect according to the second pressure transducer obtains the bearing power of the motor of engineering machinery, in the time that the bearing power of described motor is greater than its rated power, it is electric that controller obtains the first solenoid directional control valve, and controller makes the bearing power of motor equal rated power by the discharge capacity of regulator solution pressure motor; When the bearing power of described motor is during lower than its rated power, controller makes the first solenoid directional control valve power-off and the second solenoid directional control valve is obtained electric, and controller makes the bearing power of motor equal its rated power by the discharge capacity of regulator solution pressure motor.
Further, the utility model also comprises safety valve, and the entrance of described safety valve is communicated with hydraulic energy storage unit, and the outlet of safety valve is communicated with described fuel tank.
Further, oil hydraulic motor described in the utility model is variable displacement motor or fixed displacement motor.
Further, oil hydraulic motor described in the utility model is pump/motor.
Further, hydraulic energy storage unit described in the utility model is accumulator.
The utility model electrohydraulic system is by the hydraulic energy hydraulic energy cell stores that engineering machinery revolution starts and braking process overflow produces, the hydraulic energy of storing is changed into mechanical energy and is discharged into the master variable pump of engineering machinery by oil hydraulic motor, and the motor combination drive master variable pump of engineering machinery.
Compared with background technique, the beneficial effect the utlity model has is:
(1), in the utility model, rotary braking recover kinetic energy adopts accumulator as energy storage elements, when release, directly drives oil hydraulic motor with fluid, compared with super capacitor and storage battery, has reduced the link of transformation of energy, has improved the efficiency of transformation of energy.And the specific power that accumulator drives oil hydraulic motor to export is larger, and a large amount of energy can be instantaneously provided, more applicable under this quick workplace of engineering machinery.Secondly, the circumstance complication of engineering machinery, what have is even very severe, electrohydraulic system requirement to environment far below storage battery to the requirement of environment of application accumulator.
(2) the utility model is independent of outside the hydraulic system of existing engineering machinery, and the existing system of engineering machinery is not carried out to too large change, does not affect the operating habit of operator to engineering machinery.In addition, energy recovery and releasing mechanism principle in the utility model are simple, and element is less, and compared with adopting the mixed power system of storage battery, price is very cheap, has reduced the cost of whole system.
(3) the utility model is by using the first one-way valve and the second one-way valve that the braking energy of the rotary motor of engineering machinery is stored in hydraulic energy storage unit, without the braking direction of identification rotary motor.
(4) the utility model can be automatically according to master variable pump load demand, the adjusting by controller to oil hydraulic motor, and to maintain engine operation at a lower constant output, energy-saving effect is remarkable.Simplify the oil hydraulic circuit of energy-recuperation system, the control of signal has also been provided a great convenience.
Brief description of the drawings
Fig. 1 is the structure reason figure of the electrohydraulic system of the utility model the first mode of execution;
Fig. 2 is the structure principle chart of the electrohydraulic system of the utility model the second mode of execution;
In figure, 1. oil hydraulic motor, 2. hydraulic energy storage unit, 3. the first solenoid directional control valve, 4. sequence valve, 5. safety valve, 6. controller, 7. the first pressure transducer, 8. the second pressure transducer, 9. the 3rd one-way valve, 10. the second solenoid directional control valve, 11. the 4th one-way valves, 12. first one-way valves, 13. second one-way valves, 14. rotary motors, 15. motors, 16. master variable pumps, 17. fuel tanks.
Embodiment
In the utility model, engineering machinery refers to the rotation motion construction plant frequently for engineering construction such as excavation machinery, earth moving machinery, all-rotation pile pulling machinery.
Fig. 1 shows the fundamental diagram of the electrohydraulic system of a kind of structure of the present utility model.As shown in Figure 1, the utility model electrohydraulic system mainly comprises energy recovery and releasing mechanism and control unit, wherein, control unit comprises controller 6 and the first pressure transducer 7, and energy reclaims and releasing mechanism comprises hydraulic energy storage unit 2, the first solenoid directional control valve 3, oil hydraulic motor 1, sequence valve 4, the first one-way valve 12 and the second one-way valve 13.Oil hydraulic motor 1 is coaxially connected with the master variable pump 16 of engineering machinery, the A mouth of oil hydraulic motor 1 is communicated with a port of the first solenoid directional control valve 3, another port of the first solenoid directional control valve 3, hydraulic energy storage unit 2, the outlet of sequence valve 4 and the first pressure transducer 7 are interconnected, the B mouth of oil hydraulic motor 1 is communicated with the fuel tank 17 of engineering machinery, the entrance while of sequence valve 4 and the outlet of the first one-way valve 12, the outlet of the second one-way valve 13 is communicated with, a hydraulic fluid port of first entrance of one-way valve 12 and the rotary motor of engineering machinery 14 is communicated with, another hydraulic fluid port of second entrance of one-way valve 13 and the rotary motor of engineering machinery 14 is communicated with, controller 6 respectively with the first pressure transducer 7, oil hydraulic motor 1, the first solenoid directional control valve 3 is electrically connected.
When the electrohydraulic system of the utility model the first mode of execution is worked, in the time that the first pressure transducer 7 detects that force value in hydraulic energy storage unit 2 is more than or equal to the Minimum operating pressure value of hydraulic energy storage unit 2, controller 6 makes the first solenoid directional control valve 3 obtain electric-opening, and the high pressure oil in hydraulic energy storage unit 2 discharges through oil hydraulic motor 1; When the force value in the hydraulic energy storage unit 2 that the first pressure transducer 7 detects is during lower than the Minimum operating pressure value of hydraulic energy storage unit 2, controller 6 is closed the first solenoid directional control valve 3 power-off, with the discharge capacity of Time Controller 6 regulator solution pressure motors to minimum injection rate value.
In the utility model the first mode of execution, being communicated with the entrance of the first one-way valve 12 and the entrance of the second one-way valve 13 respectively of two hydraulic fluid ports of rotary motor 14, behind the outlet interflow of the first one-way valve 12 and the second one-way valve 13, be communicated with the entrance of sequence valve 4, the outlet of sequence valve 4 is communicated with hydraulic energy storage unit 2, in the time that rotary motor 14 is braked, the utility model electrohydraulic system, without the braking direction of identification rotary motor 14, can be filled with pressure oil in hydraulic energy storage unit 2.As long as exist the high pressure oil that can discharge just can make the first solenoid directional control valve 7 obtain electric-opening in hydraulic energy storage unit 2, the high pressure oil in hydraulic energy storage unit 2 is discharged into the form of mechanical energy on the load pump of engineering machinery by oil hydraulic motor 1; In the time that the high pressure oil in hydraulic energy storage unit 2 releases, the discharge capacity of controller 6 regulator solution pressure motors 1 is to minimum injection rate place, to reduce the impact of the performance on engineering machinery.The utility model the first mode of execution is without the real-time discharge capacity of regulator solution pressure motor 1, simple, cost is low.
Fig. 2 shows the fundamental diagram of the electrohydraulic system of the second mode of execution of the present utility model.As shown in Figure 2, the utility model reclaims for engineering machinery rotary braking energy and the electrohydraulic system of release mainly comprises energy recovery and releasing mechanism and control unit, wherein, control unit comprises controller 6, the first pressure transducer 7 and the second pressure transducer 8, energy reclaims and releasing mechanism comprises hydraulic energy storage unit 2, the first solenoid directional control valve 3, the second solenoid directional control valve 10, oil hydraulic motor 1, sequence valve 4, the first one-way valve 12, the second one-way valve 13 the 3rd one-way valve 9 and the 4th one-way valve 11, oil hydraulic motor 1 is coaxially connected with the pump shaft of the master variable pump 16 of engineering machinery, the A mouth while of oil hydraulic motor and a port of the first solenoid directional control valve 3, the outlet of the 4th one-way valve 11 is communicated with, another port of the first solenoid directional control valve 3, hydraulic energy storage unit 2, the outlet of sequence valve 4, the outlet of the 3rd one-way valve 9 and the first pressure transducer 7 are interconnected, the B mouth of oil hydraulic motor is communicated with the P mouth of the second solenoid directional control valve 10, the A mouth of the second solenoid directional control valve 10 is communicated with the entrance of the 3rd one-way valve 9, the B mouth of the second solenoid directional control valve 10 is communicated with fuel tank, entrance while and first one-way valve 12 of sequence valve 4, the outlet of the second one-way valve 13 is communicated with, a hydraulic fluid port of first entrance of one-way valve 12 and the rotary motor of engineering machinery 14 is communicated with, another hydraulic fluid port of second entrance of one-way valve 13 and the rotary motor of engineering machinery 14 is communicated with, controller 6 is electrically connected with the first pressure transducer 7, the second pressure transducer 8, oil hydraulic motor 1, the first solenoid directional control valve 3, the second solenoid directional control valve 10 respectively.
When the electrohydraulic system of the utility model the second mode of execution is worked, the outlet pressure that the second pressure transducer 8 detects master variable pump 16 feeds back to controller 6, and controller 6 obtains the bearing power of motor thus.In the time that the bearing power of the motor 15 of engineering machinery is greater than its rated power, controller 6 make the first solenoid directional control valve 3 electric, the discharge capacity of controller 6 regulator solution pressure motors 1 makes the bearing power of motor equal rated power; When the bearing power of motor 15 is during lower than its rated power, controller 6 make the first solenoid directional control valve 3 power-off and make the second solenoid directional control valve 10 electric, the discharge capacity of regulator solution pressure motor makes engine loading power equal its rated power.
For the second mode of execution of the present utility model, in the time that rotary motor is braked, being communicated with the entrance of the first one-way valve 12 and the entrance of the second one-way valve 13 respectively of two hydraulic fluid ports of rotary motor 14, behind the outlet interflow of the first one-way valve and the second one-way valve, be communicated with the entrance of sequence valve 4, the outlet of sequence valve 4 is communicated with hydraulic energy storage unit 2, in the time that rotary motor 14 is braked, the utility model electrohydraulic system, without the braking direction of identification rotary motor 14, can be filled with pressure oil in hydraulic energy storage unit 2.Controller 6 is controlled the discharge capacity of the first solenoid directional control valve 3, the second solenoid directional control valve 10 and oil hydraulic motor 1 according to the energy storage force value in the load of the master variable pump 16 of engineering machinery and hydraulic energy storage unit 2, maintain the output power of motor 15 on average power point and best power point, to realize the effect of the oil consumption that reduces motor.In a state of cyclic operation of revolution work, if within a period of time, the load of the motor 15 of engineering machinery is substantially constant, and controller 6 can remain on some constant output powers by control engine 5 so, and this power is the average power of acting in this period.In the time that rotary motor 14 revolution of original system starts, the power needing is larger, and now motor 15 maintains specific average power and can not meet output condition, so just needs hydraulic energy storage unit 2 to drive oil hydraulic motor that power is provided.Along with the carrying out discharging, the pressure in hydraulic energy storage unit 2 is nonlinear change, and the discharge capacity of controller control oil hydraulic motor 1 satisfies condition the power of output.Compared with existing Construction Machinery Energy Saving equipment, the utility model can reduce the oil consumption of starting in the situation that ensureing that former engineering machinery working efficiency does not reduce, and energy-saving effect is fairly obvious.In addition, the utility model is independent of the oil-way system of existing engineering machinery, very little to the oil hydraulic circuit change of engineering machinery, does not affect the use habit of operator to engineering machinery.
In order to ensure that the working pressure of hydraulic energy storage unit 2 is unlikely to exceed the maximum amount constant-pressure that it allows, the utility model electrohydraulic system also can further comprise safety valve 5.The entrance of safety valve 5 is communicated with hydraulic energy storage unit 2, and the outlet of safety valve 5 is communicated with the fuel tank of engineering machinery.In the utility model electrohydraulic system when work,, when the working pressure of hydraulic energy storage unit 2 exceedes the pressure that safety valve 5 sets, the high pressure oil in hydraulic energy storage unit 2 flows into fuel tank through safety valve 5, to limit its Maximum operating pressure.
In the utility model, oil hydraulic motor 1 is preferably variable displacement motor, fixed displacement motor or pump/motor, and hydraulic energy storage unit 2 is preferably accumulator.
Compared with existing energy recovery and mixed power system, the utility model electrohydraulic system adopts the first one-way valve 12, the second one-way valve 13 to realize automatically high brake pressure oil is introduced in hydraulic energy storage unit 2 and reclaimed, and by oil hydraulic motor 1, the high pressure oil in hydraulic energy storage unit 2 is recycled with the form of mechanical energy.The utility model preferably adopts accumulator as hydraulic energy storage unit, have higher specific power and the rapidity of release, and oil circuit is simple compared with super capacitor and storage battery, need not pass through the conversion of generator 15, and cost is low, is easy to realize through engineering approaches application.In addition, the utility model, by the discharge capacity of controller 6 regulator solution pressure motors 1, can change the bearing power of motor, so just can make motor 15 be operated near best fuel oil power points, and energy-saving effect is more remarkable.
Claims (6)
1. the electrohydraulic system that the energy for engineering machinery rotary braking reclaims and discharges, it is characterized in that: comprise energy recovery and releasing mechanism and control unit, described control unit comprises controller (6) and the first pressure transducer (7), energy reclaims and releasing mechanism comprises hydraulic energy storage unit (2), the first solenoid directional control valve (3), oil hydraulic motor (1), sequence valve (4), the first one-way valve (12) and the second one-way valve (13), described oil hydraulic motor (1) is coaxially connected with the master variable pump (16) of engineering machinery, the A mouth of oil hydraulic motor (1) is communicated with a port of the first solenoid directional control valve (3), another port of the first solenoid directional control valve (3), hydraulic energy storage unit (2), the outlet of sequence valve (4) and the first pressure transducer (7) are interconnected, the B mouth of oil hydraulic motor (1) is communicated with the fuel tank (17) of engineering machinery, the entrance while of sequence valve (4) and the outlet of the first one-way valve (12), the outlet of the second one-way valve (13) is communicated with, the entrance of the first one-way valve (12) is communicated with a hydraulic fluid port of the rotary motor (14) of engineering machinery, the entrance of the second one-way valve (13) is communicated with another hydraulic fluid port of the rotary motor (14) of engineering machinery, controller (6) is electrically connected with the first pressure transducer (7), oil hydraulic motor (1), the first solenoid directional control valve (3) respectively,
In the time that the first pressure transducer (7) detects that the force value of hydraulic energy storage unit (2) is more than or equal to the Minimum operating pressure value of hydraulic energy storage unit, controller (6) makes the first solenoid directional control valve (3) obtain electric-opening, and the high pressure oil in hydraulic energy storage unit (2) discharges through oil hydraulic motor (1); The force value that hydraulic energy storage unit detected when the first pressure transducer (7) is during lower than the Minimum operating pressure value of hydraulic energy storage unit, controller (6) is closed the first solenoid directional control valve (3) power-off, and the discharge capacity of same Time Controller (6) regulator solution pressure motor (1) is to minimum injection rate value.
2. the electrohydraulic system that the energy for engineering machinery rotary braking reclaims and discharges, it is characterized in that: comprise energy recovery and releasing mechanism and control unit, described control unit comprises controller (6), the first pressure transducer (7) and the second pressure transducer (8), energy reclaims and releasing mechanism comprises hydraulic energy storage unit (2), the first solenoid directional control valve (3), the second solenoid directional control valve (10), oil hydraulic motor (1), sequence valve (4), the first one-way valve (12), the second one-way valve (13), the 3rd one-way valve (9) and the 4th one-way valve (11), oil hydraulic motor (1) is coaxially connected with the pump shaft of the master variable pump (16) of engineering machinery, the A mouth while of oil hydraulic motor (1) and a port of the first solenoid directional control valve (3), the outlet of the 4th one-way valve (11) is communicated with, another port of the first solenoid directional control valve (3), hydraulic energy storage unit (2), the outlet of sequence valve (4), the outlet of the 3rd one-way valve (9) and the first pressure transducer (7) are interconnected, the B mouth of oil hydraulic motor (1) is communicated with the P mouth of the second solenoid directional control valve (10), the A mouth of the second solenoid directional control valve (10) is communicated with the entrance of the 3rd one-way valve (9), the B mouth of the second solenoid directional control valve (10) is communicated with the fuel tank (17) of engineering machinery, entrance while and the first one-way valve (12) of sequence valve (4), the outlet of the second one-way valve (13) is communicated with, the entrance of the first one-way valve (12) is communicated with a hydraulic fluid port of the rotary motor (14) of engineering machinery, the entrance of the second one-way valve (13) is communicated with another hydraulic fluid port of described rotary motor (14), the second pressure transducer (8) is communicated with the outlet of the master variable pump (16) of engineering machinery, controller (6) is electrically connected with the first pressure transducer (7), the second pressure transducer (8), oil hydraulic motor (1), the first solenoid directional control valve (3), the second solenoid directional control valve (10) respectively,
The outlet pressure of the master variable pump (16) that controller (6) can detect according to the second pressure transducer (8) obtains the bearing power of the motor (15) of engineering machinery, in the time that the bearing power of described motor (15) is greater than its rated power, it is electric that controller (6) obtains the first solenoid directional control valve (3), and controller (6) makes the bearing power of motor (15) equal rated power by the discharge capacity of regulator solution pressure motor (1); When the bearing power of described motor (15) is during lower than its rated power, controller (6) makes (3) power-off of the first solenoid directional control valve and the second solenoid directional control valve (10) is obtained electric, and controller (6) makes the bearing power of motor (15) equal its rated power by the discharge capacity of regulator solution pressure motor (1).
3. electrohydraulic system according to claim 1 and 2, is characterized in that: also comprise safety valve (5), the entrance of described safety valve (5) is communicated with hydraulic energy storage unit (2), and the outlet of safety valve (5) is communicated with described fuel tank.
4. electrohydraulic system according to claim 1 and 2, is characterized in that: described oil hydraulic motor (1) is variable displacement motor or fixed displacement motor.
5. electrohydraulic system according to claim 1 and 2, is characterized in that: described oil hydraulic motor (1) is pump/motor.
6. electrohydraulic system according to claim 1 and 2, is characterized in that: described hydraulic energy storage unit (2) is accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865985.5U CN203655796U (en) | 2013-12-26 | 2013-12-26 | Electro-hydraulic system for recovering and releasing energy during slewing braking of engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865985.5U CN203655796U (en) | 2013-12-26 | 2013-12-26 | Electro-hydraulic system for recovering and releasing energy during slewing braking of engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655796U true CN203655796U (en) | 2014-06-18 |
Family
ID=50922187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320865985.5U Withdrawn - After Issue CN203655796U (en) | 2013-12-26 | 2013-12-26 | Electro-hydraulic system for recovering and releasing energy during slewing braking of engineering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655796U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697023A (en) * | 2013-12-26 | 2014-04-02 | 浙江德泰机电工程有限公司 | Electro-hydraulic energy recovery and release system for slewing brake of engineering machinery |
| CN105370633A (en) * | 2015-11-26 | 2016-03-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Variable load hydraulic motor dragging device |
| CN105523493A (en) * | 2016-03-08 | 2016-04-27 | 吉林大学 | Power compensation type workover rig power transmission system |
-
2013
- 2013-12-26 CN CN201320865985.5U patent/CN203655796U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697023A (en) * | 2013-12-26 | 2014-04-02 | 浙江德泰机电工程有限公司 | Electro-hydraulic energy recovery and release system for slewing brake of engineering machinery |
| CN103697023B (en) * | 2013-12-26 | 2015-10-28 | 浙江德泰机电工程有限公司 | For the energy regenerating of the rotary braking of engineering machinery and the electrohydraulic system of release |
| CN105370633A (en) * | 2015-11-26 | 2016-03-02 | 中国航空工业集团公司沈阳飞机设计研究所 | Variable load hydraulic motor dragging device |
| CN105370633B (en) * | 2015-11-26 | 2018-11-13 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of changeable load hydraulic motor actuator |
| CN105523493A (en) * | 2016-03-08 | 2016-04-27 | 吉林大学 | Power compensation type workover rig power transmission system |
| CN105523493B (en) * | 2016-03-08 | 2017-07-28 | 吉林大学 | A kind of power back-off formula workover rig power drive system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103697023B (en) | For the energy regenerating of the rotary braking of engineering machinery and the electrohydraulic system of release | |
| CN101435451B (en) | Movable arm potential energy recovery method and apparatus of hydraulic excavator | |
| CN108978775B (en) | Series-parallel mechanical hybrid power system for excavator based on flywheel | |
| CN102912821B (en) | Hydraulic excavating energy saving system | |
| CN108755794B (en) | Hydraulic excavator based on hydraulic-electric composite drive | |
| CN201288722Y (en) | Energy recovery system of mixed power mechanical actuator | |
| CN108894274B (en) | Excavator gyration energy recuperation and system of recycling | |
| CN101705700B (en) | Hydraulic hybrid power system of excavator | |
| CN201297307Y (en) | Hydraulic motor energy recycling system used as energy accumulator for hybrid electric engineering machinery | |
| CN202000385U (en) | Electro-hydraulic composite hybrid power excavator driving device | |
| CN202007435U (en) | Energy recovering system for excavator | |
| CN103643708B (en) | A kind of Hydraulic Excavator's Boom energy conserving system | |
| CN202787369U (en) | Hydraumatic excavating energy saving system | |
| CN101408212A (en) | Energy recovery system of hybrid power engineering machinery actuating element | |
| CN101403405A (en) | Energy recovery system of hybrid single-pump multi-execution component engineering machinery | |
| CN109797797B (en) | Torque coupling type excavator movable arm potential energy recycling and reusing system | |
| CN102561444A (en) | Energy recovery excavator slewing system and control method thereof | |
| CN201506243U (en) | Hydro-electric composite energy storing device | |
| CN108978774B (en) | Series-parallel hybrid power system for excavator | |
| CN103215982A (en) | Hybrid-powered rotation driving system and construction machinery | |
| CN103628519A (en) | Excavator gyration braking energy recovery system | |
| CN101580207A (en) | Hydraulic energy saving system for harbour crane | |
| CN203655796U (en) | Electro-hydraulic system for recovering and releasing energy during slewing braking of engineering machine | |
| CN107013535A (en) | A kind of pressure Self Matching energy utility system | |
| CN201288721Y (en) | Energy recovery system of mixed power single-valve multiple actuator assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140618 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |