CN110671393A - Energy recycling device - Google Patents
Energy recycling device Download PDFInfo
- Publication number
- CN110671393A CN110671393A CN201911112772.3A CN201911112772A CN110671393A CN 110671393 A CN110671393 A CN 110671393A CN 201911112772 A CN201911112772 A CN 201911112772A CN 110671393 A CN110671393 A CN 110671393A
- Authority
- CN
- China
- Prior art keywords
- oil
- energy
- cylinder
- ports
- double
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an energy recycling device, which comprises a three-position seven-way reversing valve, a double-oil-source coupler and an energy accumulator, wherein the three-position seven-way reversing valve is connected with the energy accumulator; the three-position seven-way reversing valve comprises a middle position, an energy release position and an energy recovery position, wherein an oil inlet, an oil return port, two groups of working oil ports and three groups of energy-saving oil ports are arranged on the three-position seven-way reversing valve, the oil inlet, the oil return port and the two groups of working oil ports are respectively butted with two oil ports of a driving oil cylinder and an oil inlet and outlet way of a hydraulic system, one group of energy-saving oil ports are connected to an energy accumulator, the other two groups of energy-saving oil ports are converged to a double-oil-source coupler, and the double-oil-source coupler is connected to one oil port of the driving oil cylinder in parallel.
Description
Technical Field
The invention belongs to the technology of energy recovery of a hydraulic system, and particularly relates to an energy recovery and utilization device of the hydraulic system for driving an external potential device.
Background
Under the large background of global environmental pollution and energy shortage, governments, industries and markets put higher requirements on energy consumption and emission of large-scale mechanical equipment, and the energy-saving and emission-reducing technology becomes a research hotspot in the field of engineering mechanical equipment. The excavator is a common engineering machine, the movable arm of the excavator usually utilizes hydraulic oil to act on an oil cylinder to realize the lifting of the movable arm, and the movable arm, a bucket rod, a bucket and the like acting on the movable arm are large in mass and are used as main external potential devices (the potential devices refer to potential energy changes generated in the working process) on the excavator, in order to prevent the movable arm devices from easily losing weight in the descending process, a conventional solution is that a throttling device is arranged on a return pipeline of a large cavity of the oil cylinder to generate adjustable back pressure for speed control, so most of energy of the movable arm devices is converted into heat energy, the heat energy is wasted in vain, and in order to prevent damage to a system caused by the large temperature rise of the hydraulic oil, a heat dissipation device is required to be arranged, and the equipment cost is further increased.
In order to improve the energy utilization rate of an excavator and fully utilize the mature reliability of an excavator platform, most manufacturers develop energy recycling devices based on an original excavator platform, but how to realize efficient energy recycling and miniaturize the volume of an energy accumulator element is a difficulty for engineering implementation of energy recycling technology, a common method of the existing energy recycling technology is shown in figures 1a and 1b, a hydraulic main pump 4 and a recycling pump 5 are connected in series to be used as a secondary element for pressurization recycling and reutilization, when hydraulic oil flows back, the hydraulic main pump is used as a driving part to drive the recycling pump to pump hydraulic oil into an energy accumulator 6 for storage so as to realize energy recycling, when the hydraulic oil needs to be pumped to drive a movable arm to lift, the pressure oil in the energy accumulator 6 is converged with the pressure oil pumped by the hydraulic main pump 4 so as to realize the recycling of energy, since the energy conversion efficiency of a single element is generally not more than 85%, after the hydraulic main pump 4 and the recovery pump 5 are arranged in series, the maximum efficiency of one-time recovery is multiplied by only 52%, so that the energy-saving effect is not ideal, and the energy waste is still serious.
Disclosure of Invention
The technical problem solved by the invention is as follows: aiming at the problem of low energy recovery and utilization efficiency of an external potential device in the existing engineering equipment, the energy recovery and utilization device capable of further improving the energy recovery efficiency is provided.
The invention is realized by adopting the following technical scheme:
the energy recycling device comprises a three-position seven-way reversing valve 7, a double-oil-source coupler 8 and an energy accumulator 6;
the three-position seven-way reversing valve 7 comprises a middle position, an energy release position and an energy recovery position, wherein an oil inlet, an oil return port, two groups of working oil ports and three groups of energy-saving oil ports are arranged on the three-position seven-way reversing valve, the oil inlet, the oil return port and the two groups of working oil ports are respectively butted with two oil ports of a driving oil cylinder and an oil inlet and outlet way of a hydraulic system, one group of energy-saving oil ports are connected to the energy accumulator 6, the other two groups of energy-saving oil ports are converged to the double-oil-source coupler 8, and the double-;
the three-position seven-way reversing valve 7 is positioned in the middle position, two oil ports of the driving oil cylinder and an oil inlet and outlet path of the hydraulic system are communicated through an oil inlet, an oil return port and two groups of working oil ports of the three-position seven-way reversing valve 7 to form a loop, and three groups of energy-saving oil ports are respectively cut off;
the three-position seven-way reversing valve 7 is located at an energy recovery position, two oil ports of the driving oil cylinder are in differential communication through two groups of working oil ports of the three-position seven-way reversing valve 7, the two groups of working oil ports are also respectively communicated with an energy-saving oil port connected with the energy accumulator 6 and an oil inlet connected to an oil inlet path of a hydraulic system, and the oil return port and two groups of energy-saving oil ports connected to the double-oil-source coupler 8 are respectively cut off;
the three-position seven-way reversing valve 7 is located at an energy release position, one oil port of the driving oil cylinder is communicated with an oil return path of the hydraulic system through one group of working oil ports and the oil inlet, the other group of working oil ports is closed, the oil return port is communicated with one group of energy-saving oil ports connected to the double-oil-source coupler 8, and the other oil port of the driving oil cylinder is respectively connected to an oil inlet path of the hydraulic system and the energy accumulator 6 through the double-oil-source coupler 8
Furthermore, a one-way valve is arranged in an energy recovery position of the three-position seven-way reversing valve 7 to realize one-way differential communication of working oil ports connected with two oil ports of the driving oil cylinder.
As a preferable scheme of the present invention, the dual oil source coupler 8 is a dual-cylinder coupler, and includes a first cylinder 81 and a second cylinder 82 which are arranged in parallel, the first cylinder 81 and a piston 83 inside the second cylinder 82 are synchronously connected, oil chambers inside the first cylinder 81 and the second cylinder 82 are respectively connected to two sets of energy-saving oil ports of the three-position seven-way reversing valve 7, and serve as oil inlet ends of the dual oil source coupler, another oil chamber of the first cylinder 81 or the second cylinder 82 is connected in parallel to one of the oil ports of the driving oil cylinder through an output end, and the oil chamber is connected to an oil tank through a one-way oil inlet path.
Further, a return spring 85 for returning the piston 83 is arranged inside the double-cylinder coupler.
As another preferred scheme of the present invention, the dual oil source coupler 8 is a dual-motor coupler, and includes two groups of coupling motors arranged in parallel, input ends of the two groups of coupling motors are respectively connected to two groups of energy-saving oil ports of the three-position seven-way reversing valve 7, and output ends of the two groups of coupling motors are connected in parallel and are converged and then connected in parallel to one of the oil ports of the driving oil cylinder.
In the energy recycling device, a one-way valve 9 is arranged on a parallel oil path of the double-oil-source coupler 8 and the driving oil cylinder.
By adopting the implementation of the technical scheme, the oil inlet and outlet paths of the driving oil cylinder of the external potential device are changed through the three-position seven-way reversing valve, the potential energy of the external potential device is efficiently recovered through a regenerative energy recovery mode of differential intercommunication of two oil cavities of the driving oil cylinder, the use of a pump and a motor with lower energy-saving efficiency is avoided, the output flow of a main pump can be reduced, or one main pump is omitted from a double-main-pump system to participate in work, so that the energy consumption is saved; the recovered hydraulic energy and the hydraulic energy provided by the hydraulic main pump are driven by the double-oil-source coupler and the energy accumulator to drive the driving oil cylinder to overcome potential energy again, the recovered energy is released more stably, and the working reliability of the device is improved.
The invention is further described with reference to the following figures and detailed description.
Drawings
Fig. 1a and 1b are schematic diagrams of a conventional hydraulic energy recycling device in the background art.
Fig. 2 is a hydraulic schematic diagram of the energy recovery and utilization device in the present embodiment.
Fig. 3a and 3b are schematic structural diagrams of two kinds of dual oil source couplers in this embodiment.
Reference numbers in the figures: 1-movable arm, 2-movable arm oil cylinder, 3-movable arm hydraulic system, 4-hydraulic main pump, 5-recovery pump, 6-energy accumulator, 7-three-position seven-way reversing valve, 8-double oil source coupler, 81-first cylinder, 82-second cylinder, 83-piston, 84-oil inlet path, 85-return spring, 86-first coupling motor, 87-second coupling motor and 9-one-way valve.
Detailed Description
Examples
Referring to fig. 2, the embodiment is described by taking a boom driving hydraulic system of an excavator as an example, a boom 1 drives lifting and descending actions through a boom cylinder 2, during the descending process, the boom 1, an arm, a bucket and the weight of an excavated material connected thereto generate a change of gravitational potential energy, the change of the gravitational potential energy directly acts on the boom cylinder 2 supporting the boom 1, hydraulic oil is squeezed by a piston inside the boom cylinder 2 and is converted into hydraulic energy, and the energy recycling device of the invention is additionally arranged on a boom hydraulic system 3 of the boom cylinder, so that the hydraulic energy of the part is recycled.
The boom cylinder 2 is driven to extend and retract by a boom hydraulic system 3 and a duplex hydraulic main pump 4 to realize the lifting and lowering actions of the boom 1, the boom hydraulic system 3 is a mature boom hydraulic control technology of the excavator, and details of the boom hydraulic system 3 are not described herein. The energy recycling device adopted in the embodiment comprises a three-position seven-way reversing valve 7, a double-oil-source coupler 8 and an energy accumulator 6, wherein the three-position seven-way reversing valve 7 is arranged between an oil inlet and an oil outlet of a movable arm oil cylinder 2 and a movable arm hydraulic system 3 and is used for realizing oil circuit switching of normal work, energy recycling and energy release of the movable arm oil cylinder, the double-oil-source coupler 8 is connected in parallel with the three-position seven-way reversing valve 7 and the oil inlet and the oil outlet of the movable arm oil cylinder 2 through an oil circuit and is used for coupling and summarizing active hydraulic energy of the movable arm hydraulic system 3 and recovered and released hydraulic energy in an energy release process, and the energy accumulator 6 is connected with the three-position seven-way reversing valve 7 through the oil circuit and is.
Wherein, the three-position seven-way reversing valve 7 of the embodiment comprises a middle position, an energy release position and an energy recovery position, each position is provided with an oil inlet C, an oil return port D, a working oil port E, a working oil port F, an energy-saving oil port G, an energy-saving oil port H and an energy-saving oil port I, wherein, the oil inlet C and the oil return port D are butted with an oil inlet path a and an oil outlet path B of the movable arm hydraulic system 3, the working oil port E and the working oil port F are respectively butted with two oil ports of a rod cavity and a rodless cavity corresponding to the movable arm oil cylinder 2, the energy-saving oil port I is connected to the energy accumulator 6, the energy-saving oil port G and the energy-saving oil port H are respectively converged to two input ends of the dual oil source coupler 8, the output end of the dual oil source coupler 8 and an oil inlet and outlet path of the working oil port connected to the rodless, and oil in the oil circuit of the movable arm oil cylinder in the normal mode is prevented from flowing back to enter the double-oil-source coupler.
The specific functions inside the three-position seven-way reversing valve 7 are as follows:
when the three-position seven-way reversing valve 7 is located at the middle position, two oil ports of a rod cavity and a rodless cavity of the movable arm oil cylinder 2 are directly communicated with an oil inlet and outlet line A, B of the movable arm hydraulic system 3 through an oil inlet C, an oil return port D and two groups of working oil ports E, F of the three-position seven-way reversing valve 7 to form a loop, the other three groups of energy-saving oil ports G, H, I are respectively cut off, the movable arm oil cylinder 2 is driven in a conventional mode of lifting and descending actions through the movable arm hydraulic system 3, and at the moment, the movable arm oil cylinder 2 does not have an.
When the three-position seven-way reversing valve 7 is switched to the energy recovery position, the movable arm oil cylinder 2 drives the movable arm 1 to descend, and gravitational potential energy is collected. Two oil ports of a rod cavity and a rodless cavity of the movable arm oil cylinder 2 are in differential communication through two groups of working oil ports E, F of a three-position seven-way reversing valve 7, a working oil port E, F is also respectively communicated with an energy-saving oil port I connected with an energy accumulator 6 and an oil inlet C connected with an oil inlet of a hydraulic system, an oil return port D and an energy-saving oil port G, H connected with a double-oil-source coupler 8 are respectively cut off, the movable arm hydraulic system 3 provides hydraulic oil with smaller displacement to enter the rod cavity of the movable arm oil cylinder 2, the movable arm oil cylinder 2 reflows most of the oil in the rodless cavity to the stored pressure in the energy accumulator 6 under the action of the gravitational potential energy of a movable arm, a small part of the oil differentially reflows to the inside of the rod cavity of the movable arm oil cylinder 2, in an energy recovery position of the three-position seven-way reversing valve 7, a one-way valve is arranged to enable the hydraulic oil in the energy recovery process to, and unidirectional differential communication is realized, the stability and reliability of the descending process of the movable arm are kept, and the double-oil-source coupler 8 does not act at the moment.
When the three-position seven-way reversing valve 7 is switched to be positioned at an energy release position, pressure collected by the energy accumulator 6 enters the movable arm oil cylinder 2 to drive the movable arm 1 to lift upwards, a rod cavity oil port of the movable arm oil cylinder 2 is communicated with an oil return path of the movable arm hydraulic system 3 through a working oil port E and an oil inlet C on the three-position seven-way reversing valve 7, the action of the movable arm oil cylinder 2 is realized through rodless cavity oil inlet and rod cavity oil return of the movable arm oil cylinder 2, a working oil port F connected to a rodless cavity oil port of the movable arm oil cylinder 2 is cut off, an oil return port D of the three-position seven-way reversing valve 7 is switched to be connected to an oil inlet path of the movable arm hydraulic system 3, meanwhile, in the three-position seven-way reversing valve 7, the oil return port D is communicated with one group of energy-saving oil ports G connected to the double-source coupler 8, the oil inlet of the movable arm hydraulic system 3 enters the rodless cavity through the double-oil, pressure oil stored in the energy accumulator 6 is coupled with oil inlet of the movable arm hydraulic system 3 through the double-oil-source coupler and then enters the rodless cavity of the movable arm oil cylinder 2 together to drive the movable arm to lift, the movable arm is driven to lift again through the descending potential energy of the movable arm recovered before, and due to the addition of the recovered energy in the energy accumulator 6, the discharge capacity of the movable arm hydraulic system 3 in the lifting process of the movable arm can be reduced, and the energy-saving effect is finally achieved.
The three-position seven-way electromagnetic valve 7 can adopt electric control reversing, when the DT1 and DT2 electromagnetic valves of the three-position seven-way reversing valve 7 are not electrified, the three-position seven-way electromagnetic valve is in a middle position, an oil return port D is communicated with a working oil port F, an oil inlet C is communicated with a working oil port E, the middle position is used for communicating a conventional oil circuit of the movable arm oil cylinder 2 and the movable arm hydraulic system 3 in a non-energy-saving mode, and the movable arm oil cylinder 2 is driven to normally act through the movable arm hydraulic; when the DT1 electromagnetic valve of the three-position seven-way reversing valve 7 is powered on, the energy-saving oil port I and the energy-saving oil port H, the oil return port D and the energy-saving oil port G are communicated with the oil inlet C and the working oil port E respectively, at the moment, a rod cavity of the movable arm oil cylinder 2 is returned through the oil inlet C, the working oil port E and the movable arm hydraulic system 3, oil output by the energy accumulator 6 and a hydraulic main pump enters the double-oil-source coupler 8 through a communication channel of the energy-saving oil port I and the energy-saving oil port H and a communication channel of the oil return port D and the energy-saving oil port G to flow together, and then the oil is introduced into a rodless cavity of the movable arm; the energy recovery position is entered when the DT2 electromagnetic valve of the three-position seven-way reversing valve 7 is powered on, the energy-saving oil port I and the working oil port F, the oil inlet C and the working oil port E are respectively communicated, the hydraulic main pump supplies oil to the rod cavity of the movable arm oil cylinder 2 from the oil inlet C and the working oil port E through the movable arm hydraulic system 3, oil between the energy-saving oil port I and the working oil port F can enter the oil inlet C and the working oil port E through the internal one-way valve, otherwise, the oil cannot enter the rod cavity of the movable arm oil cylinder through the internal one-way valve, therefore, the differential connection of the movable arm oil cylinder is realized, the action area for balancing the load of the movable arm is changed from the area of the piston inside the movable arm oil cylinder 2 to the area of the end part of the piston rod, the action area is reduced by about half, the backpressure of the. The method for recycling the regenerated energy through the intercommunication of the rod cavity and the rodless cavity of the movable arm oil cylinder 2 avoids the situation that a pump and a motor with low energy-saving efficiency recycle energy, the double-oil-source coupler is connected in parallel with the hydraulic main pump for matching, and the energy utilization rate can reach more than 85% by using the recycled energy of the pump and the energy accumulator.
The dual oil source coupler 8 of the present embodiment may adopt a dual hydraulic cylinder structure and a dual motor structure.
As shown IN fig. 3a, the dual oil source coupler 8 of the double cylinder structure includes a first cylinder 81 and a second cylinder 82 which are arranged IN parallel, the first cylinder 81 and the second cylinder 82 are respectively provided with input ends IN1 and IN2, the first cylinder 81 is synchronously connected with a piston 83 inside the second cylinder 82, the piston inside the first cylinder 81 divides the inside into a rod chamber and a rodless chamber, a piston rod of the rod chamber extends to be integrally connected with the piston inside the second cylinder 82, the piston inside the second cylinder 82 is smaller than the inner diameter of a cylinder barrel, the rod chamber and the rodless chamber inside the second cylinder 82 are communicated, the rod chamber and the rodless chamber of the first cylinder 81 and the rodless chamber of the second cylinder 82 are respectively connected to two sets of energy saving ports of the three-position seven-way reversing valve 7 through IN1 and IN2 as an oil inlet end of the dual oil source coupler, the other oil chamber of the first cylinder 81 is connected IN parallel to one of the oil ports of the boom through an output end OUT, and the oil chamber is connected to an oil tank through a unidirectional oil inlet passage, pressure oil IN the energy accumulator 6 enters a rodless cavity of the second cylinder 82 through IN2, hydraulic oil provided by the hydraulic main pump 4 through the movable arm hydraulic system 3 enters a rod cavity of the first cylinder 81 through IN1, the hydraulic main pump and the rod cavity push the piston 83 to extrude the hydraulic oil IN the rodless cavity of the first cylinder 81, the oil is pressurized and output to the movable arm oil cylinder 2 through an output end OUT on the first cylinder 81, the coupling effect of double oil sources provided by the energy accumulator 6 and the hydraulic main pump 4 is achieved, a return spring 85 for returning the piston 83 is arranged IN the rodless cavity where the output end of the first cylinder 81 is located, after lifting of the movable arm is completed, the return spring 85 pushes the piston 83 to return, and meanwhile, the hydraulic oil sucked into the oil tank through the one-way oil inlet 84 fills the rodless cavity IN the first cylinder 81.
As shown IN fig. 3b, the dual oil source coupler 8 of the dual-motor structure includes a first coupling motor 86 and a second coupling motor 87 which are arranged IN parallel, wherein an input end IN1 of the first coupling motor 86 and an input end IN2 of the second coupling motor 87 are respectively connected to two sets of energy saving oil ports G, H of the three-position seven-way reversing valve 7, output ends of the first coupling motor 86 and the second coupling motor 87 are converged into an output end OUT of the coupler through an oil path and then are connected IN parallel to a rodless cavity oil port of the boom cylinder 2, and the two sets of coupling motors are respectively used for coupling dual oil sources provided by the accumulator 6 and the hydraulic main pump 4.
The energy recycling device in the embodiment not only does not reduce the reliability of the movable arm of the excavator, but also realizes high efficiency and energy conservation. The embodiment can be used for recycling the potential energy of the movable arm of the excavator, and can also be used for recycling the energy of other potential devices with potential energy change in other work.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should be made within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (6)
1. Energy recuperation utilizes device, its characterized in that: comprises a three-position seven-way reversing valve (7), a double-oil-source coupler (8) and an energy accumulator (6);
the three-position seven-way reversing valve (7) comprises a middle position, an energy release position and an energy recovery position, wherein an oil inlet, an oil return port, two groups of working oil ports and three groups of energy-saving oil ports are formed in the three-position seven-way reversing valve, the oil inlet, the oil return port and the two groups of working oil ports are respectively butted with two oil ports of a driving oil cylinder and an oil inlet and outlet way of a hydraulic system, one group of energy-saving oil ports are connected to an energy accumulator (6), the other two groups of energy-saving oil ports are converged to a double-oil-source coupler (8), and the double-oil-;
the three-position seven-way reversing valve (7) is located at a middle position, two oil ports of the driving oil cylinder and an oil inlet and outlet path of the hydraulic system are communicated through an oil inlet, an oil return port and two groups of working oil ports of the three-position seven-way reversing valve (7) to form a loop, and three groups of energy-saving oil ports are respectively cut off;
the three-position seven-way reversing valve (7) is located at an energy recovery position, two oil ports of the driving oil cylinder are in differential communication through two groups of working oil ports of the three-position seven-way reversing valve (7), the two groups of working oil ports are also respectively communicated with an energy-saving oil port connected with the energy accumulator (6) and an oil inlet connected to an oil inlet path of a hydraulic system, and the oil return port and two groups of energy-saving oil ports connected to the double-oil-source coupler (8) are respectively cut off;
the three-position seven-way reversing valve (7) is located at an energy release position, one oil port of the driving oil cylinder is communicated with an oil return path of the hydraulic system through one group of working oil ports and the oil inlet, the other group of working oil ports is closed, the oil return port is communicated with one group of energy-saving oil ports connected to the double-oil-source coupler (8), and the other oil port of the driving oil cylinder is respectively connected to an oil inlet path of the hydraulic system and the energy accumulator (6) through the double-oil-source coupler (8).
2. The energy recovery and utilization device of claim 1, wherein a one-way valve is arranged in an energy recovery position of the three-position seven-way reversing valve (7) to realize one-way differential communication of working oil ports connecting two oil ports of the driving oil cylinder.
3. The energy recycling device of claim 2, wherein the double oil source coupler (8) is a double-cylinder coupler and comprises a first cylinder (81) and a second cylinder (82) which are arranged in parallel, the first cylinder (81) and a piston (83) inside the second cylinder (82) are synchronously connected, oil chambers inside the first cylinder (81) and the second cylinder (82) are respectively connected to two groups of energy-saving oil ports of the three-position seven-way reversing valve (7) to serve as oil inlet ends of the double oil source coupler, the other oil chamber of the first cylinder (81) or the second cylinder (82) is connected in parallel to one of the oil ports of the driving oil cylinder through an output end, and the oil chamber is connected with an oil tank through a one-way oil inlet circuit.
4. The energy recovery device according to claim 3, wherein a return spring (85) for returning the piston (83) is arranged in the double-cylinder coupler.
5. The energy recycling device according to claim 2, wherein the double oil source coupler (8) is a double-motor coupler, and comprises two sets of coupling motors arranged in parallel, the input ends of the two sets of coupling motors are respectively connected to two sets of energy-saving oil ports of the three-position seven-way reversing valve (7), and the output ends of the two sets of coupling motors are connected in parallel and are connected in parallel to one of the oil ports of the driving oil cylinder after being converged in parallel.
6. The energy recovery and utilization device of claim 3 or 5, wherein a check valve (9) is arranged on a parallel oil circuit of the double-oil-source coupler (8) and the driving oil cylinder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112772.3A CN110671393B (en) | 2019-11-14 | 2019-11-14 | Energy recycling device |
| PCT/CN2020/091641 WO2021093301A1 (en) | 2019-11-14 | 2020-05-21 | Energy recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112772.3A CN110671393B (en) | 2019-11-14 | 2019-11-14 | Energy recycling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110671393A true CN110671393A (en) | 2020-01-10 |
| CN110671393B CN110671393B (en) | 2024-07-09 |
Family
ID=69087312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911112772.3A Active CN110671393B (en) | 2019-11-14 | 2019-11-14 | Energy recycling device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110671393B (en) |
| WO (1) | WO2021093301A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021093301A1 (en) * | 2019-11-14 | 2021-05-20 | 山河智能装备股份有限公司 | Energy recycling device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126731A (en) * | 2022-03-13 | 2022-09-30 | 南阳广正检测科技有限公司 | Environment-friendly energy-saving multi-working-condition potential energy recycling system for hoisting machinery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452850A (en) * | 2014-12-16 | 2015-03-25 | 山河智能装备股份有限公司 | Method and control device for recycling potential energy of movable arm of excavator |
| CN204238273U (en) * | 2014-09-30 | 2015-04-01 | 徐州徐工挖掘机械有限公司 | Movable arm potential energy energy recovery utilizing system |
| CN104988963A (en) * | 2015-06-18 | 2015-10-21 | 力士德工程机械股份有限公司 | Hydraulic excavator movable arm potential energy recovery system |
| CN108223499A (en) * | 2018-01-08 | 2018-06-29 | 华侨大学 | A kind of motor-direct-drive type swing arm energy-recuperation system |
| CN210978074U (en) * | 2019-11-14 | 2020-07-10 | 山河智能装备股份有限公司 | Energy recycling device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005003183A (en) * | 2003-06-16 | 2005-01-06 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Hydraulic circuit of construction machinery |
| US9086061B2 (en) * | 2012-12-04 | 2015-07-21 | Caterpillar Inc. | Energy recovery hydraulic system |
| CN203463385U (en) * | 2013-09-16 | 2014-03-05 | 愚公机械股份有限公司 | Energy-saving hoisting system of hydraulic crane |
| CN103615443B (en) * | 2013-12-03 | 2016-04-06 | 三一汽车制造有限公司 | A kind of energy recovery hydraulic system and engineering machinery |
| CN104948541A (en) * | 2015-06-04 | 2015-09-30 | 宿州同创机械设备有限公司 | Hydraulic overflow energy recycling system |
| CN110671393B (en) * | 2019-11-14 | 2024-07-09 | 山河智能装备股份有限公司 | Energy recycling device |
-
2019
- 2019-11-14 CN CN201911112772.3A patent/CN110671393B/en active Active
-
2020
- 2020-05-21 WO PCT/CN2020/091641 patent/WO2021093301A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204238273U (en) * | 2014-09-30 | 2015-04-01 | 徐州徐工挖掘机械有限公司 | Movable arm potential energy energy recovery utilizing system |
| CN104452850A (en) * | 2014-12-16 | 2015-03-25 | 山河智能装备股份有限公司 | Method and control device for recycling potential energy of movable arm of excavator |
| CN104988963A (en) * | 2015-06-18 | 2015-10-21 | 力士德工程机械股份有限公司 | Hydraulic excavator movable arm potential energy recovery system |
| CN108223499A (en) * | 2018-01-08 | 2018-06-29 | 华侨大学 | A kind of motor-direct-drive type swing arm energy-recuperation system |
| CN210978074U (en) * | 2019-11-14 | 2020-07-10 | 山河智能装备股份有限公司 | Energy recycling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021093301A1 (en) * | 2019-11-14 | 2021-05-20 | 山河智能装备股份有限公司 | Energy recycling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110671393B (en) | 2024-07-09 |
| WO2021093301A1 (en) | 2021-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110700337B (en) | Energy-saving control system and control method for movable arm of excavator | |
| CN103267034A (en) | Load sensitive hydraulic system with compensation valve energy recovery function | |
| CN114715818B (en) | Separate type electro-hydraulic driven forklift potential energy recovery system and separate type electro-hydraulic driven forklift | |
| CN103896156A (en) | Energy-saving hydraulic system for crane and crane | |
| CN110671393B (en) | Energy recycling device | |
| CN106284478A (en) | A kind of electric balancing cylinder potential energy recovery system | |
| CN108978774B (en) | Series-parallel hybrid power system for excavator | |
| CN210978074U (en) | Energy recycling device | |
| CN214570507U (en) | Device integrating potential energy recovery and release of forklift | |
| CN105387015A (en) | Energy-saving hydraulic valve | |
| CN110512669A (en) | A kind of excavator swing arm potential energy recovery system based on accumulator | |
| CN109113120A (en) | A kind of electric-hydraulic combined swing arm energy recycling system | |
| CN108317123A (en) | A kind of hydraulic synchronization diffluence motor with unloading function | |
| CN112081170B (en) | Loader hydraulic system and loader | |
| CN211474417U (en) | Open hydraulic pump and open hydraulic system | |
| CN109267599A (en) | The excavator dynamical system that distributed two parallel pumps directly drive | |
| CN211312642U (en) | Excavator movable arm energy-saving control system | |
| CN109797799B (en) | Energy recovery and recycling system for excavator | |
| CN210660794U (en) | Hydraulic system for quantitative system quantization | |
| CN111503067A (en) | Acceleration pressurization system | |
| CN209603224U (en) | Excavator swing arm energy recycling system | |
| CN204111196U (en) | A kind of hoisting crane energy-saving hydraulic system and hoisting crane | |
| CN113606207B (en) | Loader hydraulic system and loader | |
| CN212297068U (en) | Hydraulic system for movable arm of excavator | |
| CN109083894A (en) | A kind of electric-hydraulic combined swing arm energy recycling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |