CN114619820A - Energy recovery system and method based on volume change of swing oil cylinder and heavy truck - Google Patents
Energy recovery system and method based on volume change of swing oil cylinder and heavy truck Download PDFInfo
- Publication number
- CN114619820A CN114619820A CN202210191947.XA CN202210191947A CN114619820A CN 114619820 A CN114619820 A CN 114619820A CN 202210191947 A CN202210191947 A CN 202210191947A CN 114619820 A CN114619820 A CN 114619820A
- Authority
- CN
- China
- Prior art keywords
- oil
- oil cylinder
- pressure
- swing
- electromagnetic valve
- 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
- 238000011084 recovery Methods 0.000 title claims abstract description 78
- 230000008859 change Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000001502 supplementing effect Effects 0.000 claims description 49
- 239000013589 supplement Substances 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 13
- 230000010354 integration Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 200
- 239000000047 product Substances 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000003020 moisturizing effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
- B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
- B60G13/08—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/14—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers accumulating utilisable energy, e.g. compressing air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/20—Type of damper
- B60G2202/24—Fluid damper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/40—Type of actuator
- B60G2202/41—Fluid actuator
- B60G2202/413—Hydraulic actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/40—Type of actuator
- B60G2202/41—Fluid actuator
- B60G2202/414—Fluid actuator using electrohydraulic valves
Abstract
The invention discloses an energy recovery system and method based on volume change of a swing oil cylinder and a heavy truck, and the energy recovery system comprises a left swing oil cylinder and a right swing oil cylinder which are arranged on two sides of a rear axle of a vehicle, wherein each cavity of the left swing oil cylinder and the right swing oil cylinder is respectively provided with a pressure sensor for detecting the pressure of the cavity, a rodless cavity of the left swing oil cylinder is respectively connected with a first electromagnetic valve and a rod cavity of the right swing oil cylinder, and a rod cavity of the left swing oil cylinder is respectively connected with a second electromagnetic valve and a rodless cavity of the right swing oil cylinder; the output end of the sensor controller is respectively and electrically connected with the pressure sensor, the first electromagnetic valve and the second electromagnetic valve; the output ends of the first electromagnetic valve and the second electromagnetic valve are respectively connected with a recovery pump, and the power supply end of the recovery pump is connected with the storage battery through a recovery motor to recover energy. The invention adopts a double-channel volume-variable hydraulic recovery power generation system, two loops generate power in a peak-valley mode together, and the characteristic of large load of a heavy material handling vehicle is innovatively applied to system integration.
Description
Technical Field
The invention relates to the technical field of carrying tool vehicles, in particular to an energy recovery system and method based on volume change of a swing oil cylinder of a rear axle steering vehicle and a heavy-duty carrier.
Background
The heavy material transport vehicle is mainly used for carrying large materials in stations, ports, airports, factories, warehouses and the like at present, and the energy of the heavy material transport vehicle is divided into fuel oil, power supplies and the like. When the carrier works, the carrier carries out lifting, descending, inclining, laterally moving, rotating, moving, steering and other operation actions on a cargo device carried by the carrier, and all the operations are realized by a set of hydraulic control system
At present, a heavy material truck adopts rear axle steering drive, and a rear axle of the heavy material truck is connected with a V-shaped vehicle body component through a hinge pin shaft; however, because the whole truck of the heavy material handling truck is heavy, the weight load of the balance weight of the whole truck is concentrated on the rear axle, the load of the rear axle is over 70 percent when the whole truck is in no load, and the rear axle can float in the left-right direction, so that the left-right swing oil cylinders are arranged on two sides of the rear axle, the purpose is to overcome the defects that the handling truck swings left and right under different road conditions or the rear axle moves left and right and up and down rapidly on a bumpy road surface, and the running stability of the whole truck is improved.
However, the prior truck structure still has the following defects:
1) the left-right swing oil cylinder directly limits through a limiting plate on the frame, and when the vehicle runs on a bumpy road, the rear axle has larger impact on the limiting plate;
2) the rear axle of the whole vehicle has larger vibration and no shock absorption, and the service life of the rear axle is influenced;
3) the energy of the rear axle swinging left and right under the action of a large load cannot be recovered.
Therefore, a hydraulic system and method for recovering energy for a rear axle steering vehicle needs to be developed.
Disclosure of Invention
The invention aims to provide an energy recovery system and method based on volume change of a swing oil cylinder, which are suitable for rear axle steering vehicles to improve the stability of a heavy material handling vehicle, reduce the influence of vibration on a rear axle and realize hydraulic energy recovery of the swing oil cylinder.
In order to achieve the purpose, the invention provides the following technical scheme:
the energy recovery system based on the volume change of the swing oil cylinder comprises left and right swing oil cylinders which are arranged on two sides of a rear axle of a vehicle, wherein pressure sensors for detecting the pressure of the left and right swing oil cylinders are respectively arranged on a rod cavity and a rodless cavity of the left and right swing oil cylinders, and power supply ends of the pressure sensors are electrically connected with a sensor controller; the rodless cavity of the left swing oil cylinder is respectively connected with the rod cavities of the first electromagnetic valve and the right swing oil cylinder, and the rod cavity of the left swing oil cylinder is respectively connected with the rodless cavities of the second electromagnetic valve and the right swing oil cylinder; the output end of the sensor controller is respectively and electrically connected with the first electromagnetic valve and the second electromagnetic valve; the output ends of the first electromagnetic valve and the second electromagnetic valve are respectively connected with a recovery pump, and the power supply end of the recovery pump is connected with the storage battery through a recovery motor to recover energy. The sensor controller collects oil pressure values detected by the pressure sensors, compares the oil pressure values with set energy recovery oil pressure, and controls the first electromagnetic valve and the second electromagnetic valve to open the oil way when the oil pressure is reached, so that the energy recovery oil way is conducted, and the recovery motor is driven by the recovery pump to generate electricity.
According to the further scheme, the oil supplementing device further comprises a positive pressure oil supplementing tank, and the positive pressure oil supplementing tank is connected in series between a rodless cavity and a rod cavity of the left-right swing oil cylinder and between the rod cavity and the rodless cavity through check valves respectively and is used for supplementing oil. The positive pressure oil supplementing tank has a certain positive pressure and can actively promote hydraulic oil to enter the left-right swinging oil cylinder.
According to a further scheme, a rod cavity of the left swing oil cylinder is connected with the positive pressure oil supplementing tank through a first adjustable overflow valve, and a rodless cavity of the right swing oil cylinder is connected with the positive pressure oil supplementing tank through a second adjustable overflow valve.
According to the further scheme, the oil inlet end of the one-way valve is connected with an oil supplementing filtering device, and the oil supplementing filtering device is internally arranged inside the positive-pressure oil supplementing tank.
In a further scheme, a first flow control valve is arranged between the first electromagnetic valve and the first recovery pump, and a second flow control valve is arranged between the second electromagnetic valve and the second recovery pump.
In a further scheme, a motor controller is arranged between the recovery motor and the battery, and the motor controller is electrically connected with the first flow control valve and the second flow control valve respectively.
A second object of the present invention is to provide a heavy truck having the above-mentioned energy recovery system based on the volume change of the swing cylinder.
The third invention aims to provide an energy recovery method based on the volume change of a swing oil cylinder, which comprises the following steps:
step 1: connecting a rodless cavity of a left swing oil cylinder of a vehicle with a rod cavity of a right swing oil cylinder, and connecting the rod cavity of the left swing oil cylinder with the rodless cavity of the right swing oil cylinder to form two connecting oil paths; and the two connecting oil paths are respectively connected in series with a one-way valve to be connected with a positive pressure oil supplementing tank for supplementing oil;
step 2: when the vehicle runs, the vehicle body drives the left and right swing cylinders to float up and down along with the left and right swing cylinders, and initial oil pressures V01 and V02 of two connecting oil paths between the left and right swing cylinders are detected;
and step 3: when the V01 is not equal to the V02, the positive pressure oil supplementing tank with the positive back pressure timely supplements oil to the low-pressure connecting oil passages through the one-way valve, so that the real-time oil pressures V1 of the two connecting oil passages are consistent, and the vehicle is stable;
and 4, step 4: when the real-time oil pressure V1 is smaller than the recovered energy oil pressure V2, the positive pressure oil supplementing tank simultaneously supplements oil to the left-right swing oil cylinder and keeps the volumes of the two connecting oil ways consistent;
and 5: when the real-time oil pressure V1 reaches the recovered energy oil pressure V2, an oil path of an electromagnetic valve connected with a recovery pump is driven to be opened, so that the recovery pump rotates reversely to enable a motor to generate electricity; meanwhile, the positive pressure oil supplementing tank timely continues to supplement oil to the left-right swing oil cylinder.
In a further scheme, a rod cavity and a rodless cavity of the left-right swinging oil cylinder are respectively provided with a pressure sensor for detecting the pressure of the left-right swinging oil cylinder.
In a further scheme, the oil pressure V1 of the recovered energy is 21.5 +/-0.8 Mpa; the positive back pressure of the positive pressure oil supplementing tank is 15-20 bar.
The pressure sensor, the electromagnetic valve, the flow control valve, the adjustable overflow valve, the motor controller and the sensor controller are all products known in the field and can be purchased in the market. The invention selects products with corresponding models according to actual needs, directly applies the products to the technology of the application, and does not relate to the improvement of the internal structure, function, principle and the like. The motor controller can be selected from SZ series motor controllers of Songelectropositive electric vehicle technology GmbH in Tianjin, and the sensor controller can be selected from HSP series sensor controllers of Jiangsu MEMS Intelligent sensor research institute.
Compared with the prior art, the product has the advantages that:
1. according to the invention, the rod cavity of the left swing oil cylinder is connected with the rodless cavity of the right swing oil cylinder, and the rodless cavity of the left swing oil cylinder is connected with the rod cavity of the right swing oil cylinder, so that the oil pressures of the left swing oil cylinder and the right swing oil cylinder are complementary, and the volumes of two connecting oil paths are consistent, thereby being convenient for uniformly supplementing oil to the left swing oil cylinder and the right swing oil cylinder;
2. the positive pressure oil supplementing tank with a certain positive pressure is adopted, so that oil can be supplemented to the left-right swing oil cylinder in time, a negative pressure cavity generated by rapid change of the stroke of the oil cylinder is compensated, the rear axle of the whole vehicle is better in shock absorption, and the heavy material carrying comfort is improved;
3. because the oil pressure in each cavity of the left-right swinging oil cylinder is balanced, the stability of the oil cylinder is improved, and the service life of key stress components such as a rear axle and the like is prolonged; the available working condition is utilized to the maximum extent to grab an energy feedback system, so that the energy consumption of the whole vehicle is reduced;
4. the invention adopts the positive pressure oil supplementing tank with a certain positive pressure to timely supplement oil to the left and right swing oil cylinders and recover energy, namely, the energy is supplemented slightly, the gathering effect is better, so that when the whole vehicle is initially designed, the surplus can be properly reduced by the whole motor and the electric control scheme, and the most economic whole target scheme is designed.
5. The invention adopts a double-channel volume-variable hydraulic recovery power generation system, two loops generate power in a peak-valley mode together, and the energy recovery is obvious; the invention is innovatively applied to the characteristic of large load of the heavy material handling vehicle to carry out system integration application, recovers some energy to the maximum extent and makes a contribution to energy conservation of the whole machine.
Drawings
FIG. 1 is a schematic illustration of a hydraulic system according to the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1: the energy recovery system based on the volume change of the swing oil cylinder comprises left and right swing oil cylinders 5 and 10 which are arranged on two sides of a rear axle 1 of a vehicle, wherein pressure sensors for detecting the pressure of the left and right swing oil cylinders 5 and 10 are respectively arranged on a rod cavity and a rodless cavity of the left and right swing oil cylinders, and power supply ends of the pressure sensors are electrically connected with a sensor controller 25; a rodless cavity of the left swing oil cylinder 5 is respectively connected with rod cavities of the first electromagnetic valve 13 and the right swing oil cylinder 10, and a rod cavity of the left swing oil cylinder 5 is respectively connected with a rodless cavity of the second electromagnetic valve 14 and the right swing oil cylinder 10; the output end of the sensor controller 25 is electrically connected with the first electromagnetic valve 13 and the second electromagnetic valve 14 respectively; the output ends of the first electromagnetic valve 13 and the second electromagnetic valve 14 are respectively connected with a recovery pump, and the power supply end of the recovery pump is connected with the storage battery 22 through a recovery motor for energy recovery.
Further scheme still includes malleation moisturizing case 2, malleation moisturizing case 2 is used for moisturizing between the rodless chamber and the rodless chamber of rodless chamber and rodless chamber of horizontal hunting hydro- cylinder 5, 10 through the check valve concatenation respectively.
Because the rod cavity of the left swing oil cylinder 5 is connected with the rodless cavity of the right swing oil cylinder 10, and the rodless cavity of the left swing oil cylinder 5 is connected with the rod cavity of the right swing oil cylinder 10, the pressure of the two communicated cavities of the left swing oil cylinder and the right swing oil cylinder is complementary; in addition, the positive pressure oil supplementing tank 2 has a certain positive back pressure, so that the hydraulic oil can be respectively supplemented to the left and right swing oil cylinders through the one-way valves. The oil pressure in a rod cavity and a rodless cavity of the left-right swing oil cylinder is detected in real time through a pressure sensor, and oil is supplemented to the low-pressure connecting oil way in time, so that the volumes of the two connecting oil ways connected with the left-right swing oil cylinder are consistent, and the vehicle is stable; and it is more convenient for the first check valve 11 and the second check valve 12 to be uniformly replenished with oil. When the oil pressure in the connecting oil way reaches a certain value, a valve core of the electromagnetic valve is opened, so that high-pressure hydraulic oil enters the recovery pump through the electromagnetic valve and reversely rotates to drive the motor to generate electricity; energy recovery is achieved.
In a further scheme, a rod cavity of the left swing oil cylinder 5 is connected with the positive pressure oil supplementing tank 2 through a first adjustable overflow valve 3, and a rodless cavity of the right swing oil cylinder 10 is connected with the positive pressure oil supplementing tank 2 through a second adjustable overflow valve 24.
The first adjustable overflow valve 3 and the second adjustable overflow valve 24 control the pressure levels of the two cavities of the left swing cylinder 5 and the right swing cylinder 10, and meanwhile, the pressure characteristics of the overflow valves in the first adjustable overflow valve 3 and the second adjustable overflow valve 24 can directly provide damping fluctuation of the pressures of the two cavities of the swing cylinder 5 and the right swing cylinder 10.
In a further scheme, an oil inlet end of the one-way valve is connected with an oil supplementing filtering device 23, and the oil supplementing filtering device 23 is arranged inside the positive pressure oil supplementing tank 2.
Further, a first flow control valve 15 is provided between the first electromagnetic valve 13 and the first recovery pump 16, and a second flow control valve 19 is provided between the second electromagnetic valve 14 and the second recovery pump 21.
The first electromagnetic valve 13 and the second electromagnetic valve 14 are both two-position two-way electromagnetic valves.
A flow control valve is a known product, and is a multifunctional valve that controls a flow rate by a high-precision pilot method, and is used in a pipeline that controls a liquid flow rate and a pressure, and that maintains a predetermined flow rate, limits an excessive flow rate to a predetermined value, and appropriately reduces an upstream high pressure so that a flow rate downstream of a main valve is not affected even if a pressure upstream of the main valve changes.
In a further scheme, a motor controller 18 is arranged between the recovery motor and the storage battery 22, and the motor controller 18 is electrically connected with the first flow control valve 15 and the second flow control valve 19 respectively.
Specifically, as shown in fig. 1, the rear axle 1 is integrally connected to the V-shaped body member 4 by a hinge pin 26, and the left and right swing cylinders 5 and 10 are arranged between the rear axle 1 and the V-shaped body member 4. The pin shaft holes at two ends of the left-right swinging oil cylinder are respectively connected with the support holes above the rear axle and below the V-shaped frame through the positioning pins, when the V-shaped frame is in a horizontal state, an included angle of 63 degrees is kept between the two oil cylinders and the horizontal, and the floating deviation of about 63 degrees +/-5.5 degrees can be realized when the left-right swinging oil cylinder swings left and right. A first pressure sensor 6 and a second pressure sensor 7 are respectively arranged in a rodless cavity and a rod cavity of the left swing oil cylinder 5, and a third pressure sensor 8 and a fourth pressure sensor 9 are respectively arranged in a rod cavity and a rodless cavity of the right swing oil cylinder 10.
A rod cavity Y2 of the left swing oil cylinder 5 is connected with a K1 port on the first adjustable overflow valve 3 through one path of a tee joint S1, and a K2 port on the first adjustable overflow valve 3 is directly connected with the positive pressure oil supplementing tank 2; the other path is respectively connected with a tee joint S5 and a second one-way valve 12 through a tee joint S3, a tee joint S5 is respectively connected with a second electromagnetic valve 14 and a tee joint S4, and the tee joint S4 is respectively connected with a second adjustable overflow valve 24 and a rodless cavity Y4 on the right swing oil cylinder 10. A rodless cavity Y1 on the left swing oil cylinder 5 is respectively connected with the first electromagnetic valve 13 and the tee joint S2 through a tee joint S6, and a tee joint S2 is respectively connected with the first check valve 11 and a rod cavity Y3 of the right swing oil cylinder 10. The first check valve 11 and the second check valve 12 are directly connected with the oil supplementing filter device 23 through a tee joint Y3, and the oil supplementing filter device 23 is arranged in the positive pressure oil supplementing tank 2 to provide clean hydraulic oil for the oil cylinder.
The first electromagnetic valve 13 is connected with the first recovery pump 16 through the first flow control valve 15, the second electromagnetic valve 14 is connected with the second recovery pump 21 through the second flow control valve 19, oil return ports on the first recovery pump 16 and the second recovery pump 21 are directly connected with the positive pressure oil supplementing tank 2, ports G4 and G8 on the first flow control valve 15 and the second flow control valve 19 are directly connected with the positive pressure oil supplementing tank 2, the motor controller 18, the storage battery 22 and the sensor controller 25 are respectively connected with a control system, and conversion and transmission of electric signals and electric energy are achieved.
The working process is as follows:
when the heavy material handling vehicle runs under a certain working condition, the vehicle body can swing left and right or bump under different road conditions, so that the rear axle moves left and right and up and down quickly, meanwhile, the state of the V-shaped vehicle body component 4 is determined by the state of the road surface, and the left swing oil cylinder 5 and the right swing oil cylinder 10 which are arranged on the left side and the right side of the rear axle 1 and the V-shaped vehicle body component 4 can also float up and down along with the road surface. Because the rod cavity of the left swing oil cylinder 5 is connected with the rodless cavity of the right swing oil cylinder 10, and the rodless cavity of the left swing oil cylinder 5 is connected with the rod cavity of the right swing oil cylinder 10, the pressure balance in the connected cavity of the two oil cylinders is ensured; when the oil pressure in the left swing oil cylinder 5 and the right swing oil cylinder 10 is small, the positive pressure oil supplement tank 2 with a certain positive pressure can actively supplement oil into the left and right swing oil cylinders through the first check valve 11 and the second check valve 12, and preferentially supplement oil into the cavity with a low working pressure so as to compensate for volume sudden-change negative pressure space generated by the rapid and symmetrical movement of the left swing oil cylinder 5 and the right swing oil cylinder 10 until the volumes of the two connecting oil paths are consistent. Meanwhile, as the dead weight of the heavy material handling vehicle is larger, when the heavy material handling vehicle is under the same road condition and turns, the floating speed is high, and the oil supplementing speed is higher, after the oil is supplemented from the positive pressure oil supplementing tank 2 through the interaction of the left swing oil cylinder 5 and the right swing oil cylinder 10 through the first one-way valve 11 and the second one-way valve 12, higher pressure can be quickly established in the left swing oil cylinder 5 and the right swing oil cylinder 10.
The pressure parameters in the left swing oil cylinder 5 and the right swing oil cylinder 10 are detected in real time through the first pressure sensor 6, the second pressure sensor 7, the third pressure sensor 8 and the fourth pressure sensor 9, and signals acquired by the first pressure sensor 6, the second pressure sensor 7, the third pressure sensor 8 and the fourth pressure sensor 9 are transmitted to the sensor controller 25 for centralized analysis and processing. When the pressure reaches 21.5 +/-0.8 Mpa, the first electromagnetic valve 13 and the second electromagnetic valve 14 are opened, high-pressure oil enters the first flow control valve 15 and the second flow control valve 19 through the first electromagnetic valve 13 and the second electromagnetic valve 14 respectively, at the time, the first flow control valve 15 and the second flow control valve 19 work at the lower positions, G3-G4 and G7-G8 in the first flow control valve 15 and the second flow control valve 19 are throttling oil passages, and G1-G2 and G5-G6 oil passages are adjustable optimal flow rates which meet steady-state flow operation of the first recovery pump 16 and the second recovery pump 21, so that the first recovery pump 16 and the second recovery pump 21 can stably operate, and the first recovery motor 17 and the second recovery motor 20 are driven to generate electricity. The electric quantity generated by the first recovery motor 17 and the second recovery motor 20 is inverted and stabilized by the motor controller 18 to charge and store the electric quantity in the storage battery 22, and the electric generation of the first recovery motor 17 and the second recovery motor 20 is not interfered with each other and is recovered accurately.
The sensor controller 25 compares pressure values detected by the four pressure sensors in real time through logical operation, and when the oil pressure reaches the range of 21.5 +/-0.8 Mpa, the first electromagnetic valve 13 and the second electromagnetic valve 14 work to control the first recovery pump 16 and the second recovery pump 21 to drive the recovery motor to generate power. In fact, the energy recovery pump needs a certain pressure to drive the motor to generate power, and the sensor controller 25 is set to discriminate the specific working condition of the recoverable energy to the maximum extent.
Example 2:
a heavy truck is provided with the energy recovery system based on the volume change of the swing oil cylinder. The specific recovery system was the same as in example 1.
Example 3:
an energy recovery method based on volume change of a swing oil cylinder comprises the following steps:
step 1: connecting a rodless cavity of a left swing oil cylinder 5 of a vehicle with a rod cavity of a right swing oil cylinder 10, and connecting the rod cavity of the left swing oil cylinder 5 with the rodless cavity of the right swing oil cylinder 10 to form two connecting oil paths; and a check valve is respectively connected in series with the two connecting oil paths to be connected with the positive pressure oil supplementing tank 2 for supplementing oil; a pressure sensor for detecting the pressure of the rod cavity and the rodless cavity of the left-right swinging oil cylinder is respectively arranged on the rod cavity and the rodless cavity of the left-right swinging oil cylinder;
step 2: when the vehicle runs, the vehicle body drives the left and right swing cylinders to float up and down along with the left and right swing cylinders, and initial oil pressures V01 and V02 of two connecting oil paths between the left and right swing cylinders are detected;
and 3, step 3: when the V01 is not equal to the V02, the positive pressure oil supplementing tank 2 with the positive back pressure of 15-20bar supplements oil to the low-pressure connecting oil passages in time through the one-way valve, so that the real-time oil pressures V1 of the two connecting oil passages are consistent, and the vehicle is stable;
and 4, step 4: when the real-time oil pressure V1 is smaller than the recovered energy oil pressure V2, the positive pressure oil supplementing tank 2 simultaneously supplements oil to the left-right swing oil cylinder and keeps the volumes of the two connecting oil ways consistent; wherein the oil pressure V1 for recovering energy is 21.5 +/-0.8 MPa;
and 5: when the real-time oil pressure V1 reaches the recovered energy oil pressure V2, an oil path of an electromagnetic valve connected with a recovery pump is driven to be opened, so that the recovery pump rotates reversely to enable a motor to generate electricity; meanwhile, the positive pressure oil supplementing tank 2 timely continues to supplement oil to the left-right swing oil cylinder.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. Energy recuperation system based on swing hydro-cylinder volume changes, including installing horizontal hunting hydro-cylinder (5, 10) in vehicle rear axle (1) both sides, its characterized in that: pressure sensors for detecting the pressure of rod cavities and rodless cavities of the left-right swinging oil cylinders (5, 10) are respectively arranged on the rod cavities and the rodless cavities, and power supply ends of the pressure sensors are electrically connected with a sensor controller (25); a rodless cavity of the left swing oil cylinder (5) is respectively connected with rod cavities of the first electromagnetic valve (13) and the right swing oil cylinder (10), and a rod cavity of the left swing oil cylinder (5) is respectively connected with a rodless cavity of the second electromagnetic valve (14) and the right swing oil cylinder (10); the output end of the sensor controller (25) is respectively and electrically connected with the first electromagnetic valve (13) and the second electromagnetic valve (14); the output ends of the first electromagnetic valve (13) and the second electromagnetic valve (14) are respectively connected with a recovery pump, and the power supply end of the recovery pump is connected with a storage battery (22) through a recovery motor to recover energy.
2. The energy recovery system based on the volume change of the swing cylinder according to claim 1, wherein: still include malleation fuel feeding tank (2), malleation fuel feeding tank (2) are used for mending oil between the rodless chamber and the rod chamber and between rod chamber and the rodless chamber of horizontal hunting hydro-cylinder (5, 10) through the check valve concatenation respectively.
3. The energy recovery system based on the volume change of the swing cylinder according to claim 2, wherein: a rod cavity of the left swing oil cylinder (5) is connected with the positive pressure oil supplementing tank (2) through a first adjustable overflow valve (3), and a rodless cavity of the right swing oil cylinder (10) is connected with the positive pressure oil supplementing tank (2) through a second adjustable overflow valve (24).
4. The energy recovery system based on the volume change of the swing cylinder according to claim 2, wherein: the oil inlet end of the one-way valve is connected with an oil supplementing filtering device (23), and the oil supplementing filtering device (23) is arranged inside the positive pressure oil supplementing tank (2).
5. The energy recovery system based on the volume change of the swing cylinder according to claim 1, wherein: a first flow control valve (15) is arranged between the first electromagnetic valve (13) and the first recovery pump (16), and a second flow control valve (19) is arranged between the second electromagnetic valve (14) and the second recovery pump (21).
6. The energy recovery system based on the volume change of the swing cylinder according to claim 5, wherein: a motor controller (18) is arranged between the recovery motor and the storage battery (22), and the motor controller (18) is electrically connected with the first flow control valve (15) and the second flow control valve (19) respectively.
7. A heavy truck, its characterized in that: an energy recovery system based on the volume change of the swing cylinder according to any one of claims 1 to 6.
8. An energy recovery method based on volume change of a swing oil cylinder is characterized in that: the method comprises the following steps:
step 1: connecting a rodless cavity of a left swing oil cylinder (5) of a vehicle with a rod cavity of a right swing oil cylinder (10), and connecting the rod cavity of the left swing oil cylinder (5) with the rodless cavity of the right swing oil cylinder (10) to form two connecting oil paths; and the two connecting oil paths are respectively connected in series with a one-way valve to be connected with a positive pressure oil supplementing tank (2) for supplementing oil;
step 2: when the vehicle runs, the vehicle body drives the left and right swing cylinders to float up and down along with the left and right swing cylinders, and initial oil pressures V01 and V02 of two connecting oil paths between the left and right swing cylinders are detected;
and step 3: when the V01 is not equal to the V02, the positive pressure oil supplementing tank (2) with the positive back pressure timely supplements oil to the low-pressure connecting oil passages through the one-way valve, so that the real-time oil pressures V1 of the two connecting oil passages are consistent, and the vehicle is stable;
and 4, step 4: when the real-time oil pressure V1 is smaller than the recovered energy oil pressure V2, the positive pressure oil supplementing tank (2) simultaneously supplements oil to the left-right swing oil cylinder and keeps the volumes of the two connecting oil ways consistent;
and 5: when the real-time oil pressure V1 reaches the recovered energy oil pressure V2, an oil path of an electromagnetic valve connected with a recovery pump is driven to be opened, so that the recovery pump rotates reversely to enable a motor to generate electricity; meanwhile, the positive pressure oil supplementing tank (2) timely continues to supplement oil into the left-right swing oil cylinder.
9. The energy recovery method of claim 8, wherein: and the rod cavity and the rodless cavity of the left-right swinging oil cylinder are respectively provided with a pressure sensor for detecting the pressure of the left-right swinging oil cylinder.
10. The energy recovery method of claim 8, wherein: the recovered energy oil pressure V1 is 21.5 +/-0.8 Mpa; the positive back pressure of the positive pressure oil supplementing tank (2) is 15-20 bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210191947.XA CN114619820B (en) | 2022-02-28 | 2022-02-28 | Energy recovery system and method based on volume change of swing oil cylinder and carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210191947.XA CN114619820B (en) | 2022-02-28 | 2022-02-28 | Energy recovery system and method based on volume change of swing oil cylinder and carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114619820A true CN114619820A (en) | 2022-06-14 |
| CN114619820B CN114619820B (en) | 2023-12-01 |
Family
ID=81900125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210191947.XA Active CN114619820B (en) | 2022-02-28 | 2022-02-28 | Energy recovery system and method based on volume change of swing oil cylinder and carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114619820B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002225529A (en) * | 2001-02-05 | 2002-08-14 | Japan Science & Technology Corp | Suspension controller for electric vehicle |
| JP2009006901A (en) * | 2007-06-28 | 2009-01-15 | Hitachi Constr Mach Co Ltd | Active suspension device for work vehicle |
| JP2009078812A (en) * | 2009-01-19 | 2009-04-16 | Sumitomonacco Materials Handling Co Ltd | Swing control device for industrial vehicle |
| JP2009137372A (en) * | 2007-12-05 | 2009-06-25 | Kubota Corp | Suspension device for working vehicle |
| CN102059929A (en) * | 2010-12-20 | 2011-05-18 | 三一汽车起重机械有限公司 | Hydro-pneumatic suspension system and wheeled vehicle with same |
| CN102490565A (en) * | 2011-12-23 | 2012-06-13 | 湖南大学 | Demand-based active anti-rollover hydraulic inline suspension system for heavy truck |
| US20130283776A1 (en) * | 2010-12-28 | 2013-10-31 | Sunward Intelligent Equipment Co., Ltd. | Energy-recovery generation system for handling and carrying electric vehicle |
| CN108194565A (en) * | 2018-01-26 | 2018-06-22 | 华南理工大学 | The string series connection R formulas vehicle shock absorber and method that a kind of single turbine recovers energy |
| CN109552040A (en) * | 2018-12-27 | 2019-04-02 | 高邮市北方动力机械有限公司 | A kind of recovery method of rear axle of electric automobile vibrational energy |
| CN109624636A (en) * | 2018-12-12 | 2019-04-16 | 中联重科股份有限公司 | Hydro-pneumatic suspension system and vehicle |
| CN110884348A (en) * | 2019-11-27 | 2020-03-17 | 安徽江淮汽车集团股份有限公司 | Vibration energy hydraulic pressure recovery system and car |
| CN111059089A (en) * | 2020-01-09 | 2020-04-24 | 安徽合力股份有限公司 | Descending energy recovery system of empty container stacking machine |
| CN112009193A (en) * | 2020-09-11 | 2020-12-01 | 泰安航天特种车有限公司 | Anti adjustable oil gas suspension hydraulic system that heels |
| CN214606921U (en) * | 2021-03-19 | 2021-11-05 | 大连益利亚科技发展有限公司 | Auxiliary floating car bridge road surface adaptive system |
-
2022
- 2022-02-28 CN CN202210191947.XA patent/CN114619820B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002225529A (en) * | 2001-02-05 | 2002-08-14 | Japan Science & Technology Corp | Suspension controller for electric vehicle |
| JP2009006901A (en) * | 2007-06-28 | 2009-01-15 | Hitachi Constr Mach Co Ltd | Active suspension device for work vehicle |
| JP2009137372A (en) * | 2007-12-05 | 2009-06-25 | Kubota Corp | Suspension device for working vehicle |
| JP2009078812A (en) * | 2009-01-19 | 2009-04-16 | Sumitomonacco Materials Handling Co Ltd | Swing control device for industrial vehicle |
| CN102059929A (en) * | 2010-12-20 | 2011-05-18 | 三一汽车起重机械有限公司 | Hydro-pneumatic suspension system and wheeled vehicle with same |
| US20130283776A1 (en) * | 2010-12-28 | 2013-10-31 | Sunward Intelligent Equipment Co., Ltd. | Energy-recovery generation system for handling and carrying electric vehicle |
| CN102490565A (en) * | 2011-12-23 | 2012-06-13 | 湖南大学 | Demand-based active anti-rollover hydraulic inline suspension system for heavy truck |
| CN108194565A (en) * | 2018-01-26 | 2018-06-22 | 华南理工大学 | The string series connection R formulas vehicle shock absorber and method that a kind of single turbine recovers energy |
| CN109624636A (en) * | 2018-12-12 | 2019-04-16 | 中联重科股份有限公司 | Hydro-pneumatic suspension system and vehicle |
| CN109552040A (en) * | 2018-12-27 | 2019-04-02 | 高邮市北方动力机械有限公司 | A kind of recovery method of rear axle of electric automobile vibrational energy |
| CN110884348A (en) * | 2019-11-27 | 2020-03-17 | 安徽江淮汽车集团股份有限公司 | Vibration energy hydraulic pressure recovery system and car |
| CN111059089A (en) * | 2020-01-09 | 2020-04-24 | 安徽合力股份有限公司 | Descending energy recovery system of empty container stacking machine |
| CN112009193A (en) * | 2020-09-11 | 2020-12-01 | 泰安航天特种车有限公司 | Anti adjustable oil gas suspension hydraulic system that heels |
| CN214606921U (en) * | 2021-03-19 | 2021-11-05 | 大连益利亚科技发展有限公司 | Auxiliary floating car bridge road surface adaptive system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114619820B (en) | 2023-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214057159U (en) | Electromagnetic balance type vehicle hydraulic suspension system | |
| CN103889747B (en) | Collection of energy is passive and Active suspension | |
| CN108343646B (en) | Electro-hydraulic hybrid driving type mechanical arm control system and control method | |
| CN103042893B (en) | Hydro-pneumatic suspension system and engineering truck | |
| CN108944313B (en) | Switchable suspension and damping and energy feedback method thereof | |
| CN105774460B (en) | Vehicle appearance regulating system workflow | |
| CN102134048A (en) | Hydraulic system of hybrid power forklift | |
| CN105782140A (en) | Double-acting-cylinder fixed displacement pump truck pose adjustment system | |
| CN106427455A (en) | Vehicle suspension and vehicle | |
| CN101844498A (en) | Semiactive/active composite control suspension without external power source and control method thereof | |
| CN211449231U (en) | No-load and heavy-load damping-adjustable hydro-pneumatic suspension hydraulic control device | |
| CN106567904A (en) | Lifting hydro-pneumatic suspension hydraulic system | |
| CN105751848B (en) | Accumulator vibration damping valve group with blocking function | |
| CN105736488B (en) | Single group double acting cylinder quantifies pump truck appearance regulating system | |
| CN110497962A (en) | A kind of servo integrated electric hydraulic steering system of straddle carrier volume and its control method | |
| CN114619820A (en) | Energy recovery system and method based on volume change of swing oil cylinder and heavy truck | |
| CN108608821B (en) | Vehicle suspension system comprising negative stiffness device and control method thereof | |
| CN112696389A (en) | Cantilever balance control valve group | |
| CN202595778U (en) | Skid-steer loader movable arm vibration reduction device | |
| CN112572087A (en) | Electromagnetic balance type vehicle hydraulic suspension system and control method thereof | |
| CN102700380B (en) | suspension system control combination device | |
| CN112895832A (en) | Vehicle posture and damping adjustment control method | |
| CN107539929B (en) | A kind of low clearance can integral elevating omnidirectional intelligent family moving platform | |
| Qiao et al. | A novel electro-hydraulic compound driving system with potential energy regeneration capability for lifting device | |
| CN102720232A (en) | Damping device of swing arms of slipping steering loaders |
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 |