CN209604334U - Movable arm potential energy energy regenerating and the system of utilizing - Google Patents
Movable arm potential energy energy regenerating and the system of utilizing Download PDFInfo
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- CN209604334U CN209604334U CN201822216462.3U CN201822216462U CN209604334U CN 209604334 U CN209604334 U CN 209604334U CN 201822216462 U CN201822216462 U CN 201822216462U CN 209604334 U CN209604334 U CN 209604334U
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Abstract
A kind of movable arm potential energy energy regenerating and the system of utilizing, third check valve is serially connected between the inlet port of hydraulic pump and fuel tank, the oil outlet of hydraulic pump is connected by the P mouth of the first check valve and main reversing valve, the B mouth of main reversing valve is connect with the oil outlet of the A of switching valve mouth, the oil inlet of second one-way valve and the 4th check valve respectively, the oil inlet of 4th check valve and the A mouth of hydraulic motor connect, and the P mouth of the P mouth of hydraulic motor, the oil outlet of second one-way valve and switching valve is connect with the rodless cavity of boom cylinder-；The control mouth of switching valve is connect by the son that throttles with the A of main reversing valve mouth；The output shaft of hydraulic motor is connected by first clutch, flywheel, second clutch and auxiliary hydraulic pump；The inlet port S of auxiliary hydraulic pump is connect with fuel tank, and the oil outlet of auxiliary hydraulic pump and the inlet port of hydraulic pump connect.The pressure energy that the potential energy of swing arm can be the mechanical energy of flywheel rotation, and can be converted into oil liquid by the system is used for the promotion of swing arm.
Description
Technical field
The utility model belongs to hydraulic transmission technology field, specifically a kind of movable arm potential energy energy regenerating and the system of utilizing.
Background technique
Hydraulic crawler excavator is widely applied in all kinds of construction fields, and hydraulic crawler excavator has the shortcomings that oil consumption height, low efficiency,
Energy saving research is extremely urgent.
Fig. 1 is the excavator swing arm system structure diagram universal when former.Wherein, the end of swing arm 100 is hinged on
On turntable 200, the cylinder barrel of boom cylinder 4 is hinged on turntable 200, and the tailpiece of the piston rod of boom cylinder 4 is hinged on swing arm 100
Middle part.When the piston rod of boom cylinder 4 does stretching motion, swing arm 100 can be driven to do promotion and decentralization movement.It excavates
During the work time, swing arm lifting action is frequent for machine, and since equipment and load quality are big, can discharge during decline
A large amount of potential energy out.Fig. 2 is the simplified pinciple figure of excavator swing arm hydraulic system in the prior art.It is in conjunction with Fig. 2 it is found that above-mentioned
The consumption of the energy overwhelming majority is on the valve port of main reversing valve 3 and is converted to thermal energy, this not only causes the waste and system of energy
Fever, meanwhile, also reduce the service life of Hydraulic Elements.Therefore, movable arm potential energy recycle and reuse problem is studied, extension is set
Standby service life improves capacity usage ratio and is of great significance.
Currently, research recoverable for excavator swing arm gesture is concentrated mainly on electric power type (electric power storage energy storage) and fluid pressure type
(hydraulic accumulation energy) two aspect.
Electric power type mainly uses hydraulic motor, generator for energy conversion elements, and battery and super capacitor are energy storage member
Part, to realize the conversion and recycling of energy.When system needs energy, generator works in a motor mode, drives hydraulic
Pump/motor works in a pumping mode, to system output hydraulic pressure energy.But the time of swing arm decline process is very short (3~6s), energy
Magnitude is big, so power is very big.The battery of the prior art is difficult to bear so big charge/discharge power.In addition, battery
Depth charge discharge life is very short, and about thousands of times.And super capacitor price is prohibitively expensive, and its occupied space is big, therefore electric power type
That recycles is not very practical.
Fluid pressure type energy recycling system is using accumulator as energy-storage travelling wave tube.Its basic functional principle is, when recovery system gravity
When potential energy, it is stored in hydraulic accumulator in the form of high-voltage oil liquid pressure energy；When needing energy in system, the oil liquid of storage
It releases and enters hydraulic system work.It is big that fluid pressure type recovery scheme is utilized accumulator power density, can Absorbing hydraulic pulsation
The advantages that, but because the density of accumulator storage energy is low, it may require that large volume of accumulation of energy when storing more energy if necessary
Device, and then biggish space can be occupied, and the installation of accumulator is also very inconvenient.In addition, the pressure of accumulator can be with depositing
Oil storage liquid increases and rises, and impacts to the falling speed of swing arm.
Summary of the invention
In view of the above-mentioned problems of the prior art, the utility model provides a kind of movable arm potential energy energy regenerating and using being
System, which can be the mechanical energy of flywheel rotation in swing arm decentralization process for the potential energy of swing arm, and can be carried out storage,
To be avoided that because of the phenomenon that energy dissipation caused by being converted into oil liquid thermal energy and hydraulic component heating；In addition, when swing arm needs
When being promoted, the mechanical energy of flywheel rotation can be converted into the pressure energy of oil liquid and then can be used for boom arm lift, can be reduced to original
The power demand of motivation, the system have significant energy-saving effect.
To achieve the goals above, the utility model provides a kind of movable arm potential energy energy regenerating and utilizes system, including original
Motivation, hydraulic pump, main reversing valve, boom cylinder, fuel tank, the control crank for manipulating swing arm, third check valve and control
Device, described prime mover and hydraulic pump are coaxially connected, and the oil outlet P of hydraulic pump passes through the P mouth company of the first check valve and main reversing valve
It connects, the T mouth of main reversing valve and A mouthfuls are connect with the rod chamber of fuel tank and boom cylinder respectively；
The oil inlet of the third check valve is connect with fuel tank, the oil outlet of third check valve and the inlet port S of hydraulic pump
Connection, the B mouth of main reversing valve connect with the oil outlet of the A of switching valve mouth, the oil inlet of second one-way valve and the 4th check valve respectively
It connects, the A mouth of the oil inlet of the 4th check valve and hydraulic motor connects, and the P mouth of hydraulic motor, the oil outlet of second one-way valve and cuts
The P mouth for changing valve is connect with the rodless cavity of boom cylinder；The A mouth company that the control mouth of switching valve passes through throttling son and main reversing valve
It connects；
The output shaft of hydraulic motor is connect by first clutch with the shaft of flywheel one end, and the shaft of the flywheel other end is logical
It is coaxially connected with auxiliary hydraulic pump to cross second clutch；
The inlet port S of auxiliary hydraulic pump is connect with fuel tank, and the oil outlet P of auxiliary hydraulic pump and the inlet port S of hydraulic pump connect
It connects；
The input terminal of the controller and the output end of control crank connect, and the output end of the controller is changed with master respectively
It is connected to valve, first clutch, second clutch, hydraulic pump, hydraulic motor with auxiliary hydraulic pump.
Further, for the ease of changing transmission ratio, the first change is also serially connected between the hydraulic motor and first clutch
Fast device；The second speed changer is also serially connected between the second clutch and auxiliary hydraulic pump.
Further, work to be effectively protected system in setting pressure, P mouth of main reversing valve also by overflow valve and
Fuel tank connection.
The utility model carries out the conversion of energy by hydraulic motor and is stored in flywheel during swing arm declines
In, avoid the waste of energy during swing arm decline.Meanwhile this programme can also be again by the energy back of storage in hydraulic pressure system
In system.When swing arm needs to be promoted, flywheel driving auxiliary hydraulic pump can make the mechanical energy of storage become the form high efficiency of pressure energy
Add in hydraulic system, be used for boom arm lift process.It is filled by the actuation or disconnection of controller control clutch to control
Energy or exergonic process can more convenient, efficiently control the conversion of energy or recycle process.The setting of switching valve can automatically be sentenced
Whether disconnected swing arm decentralization process out has energy to can be carried out recycling, can be automatically after the rod chamber pressure rise of boom cylinder
Switch and be connected internal oil passages, so that the oil liquid of boom cylinder rodless cavity is no longer pass through hydraulic motor and directly flows back to fuel tank,
When the rod chamber pressure of boom cylinder is lower, switching valve internal oil passages are in an off state always, so that boom cylinder
The oil liquid of rodless cavity passes through hydraulic motor, to carry out the recycling of energy in swing arm dropping process.Second clutch and auxiliary hydraulic pressure
The setting of pump can recycle convenient for the energy of flywheel recycling, and the high-voltage oil liquid of auxiliary hydraulic pump discharge is directly entered hydraulic pump
Inlet port achievees the purpose that reduce original machine power, reduces energy consumption to reduce the pressure difference of hydraulic pump oil inlet and outlet.
The setting of second one-way valve and the 4th check valve can guarantee that the oil liquid of the B mouth discharge of main reversing valve will not drive hydraulic motor to revolve
Turn, and can fully enter in the rodless cavity of boom cylinder.The setting of third check valve can guarantee the oil of auxiliary hydraulic pump discharge
Liquid will not directly flow back to fuel tank, cause the waste to recover energy.The system structure is simple, it is easy to accomplish, it can be reduced to prime mover
Power demand, so that system is selected smaller number prime mover, have significant energy-saving effect.
The utility model additionally provides a kind of movable arm potential energy energy regenerating and utilizes system, including prime mover, hydraulic pump, master
Reversal valve, boom cylinder and fuel tank, described prime mover and hydraulic pump are coaxially connected, and the inlet port S of hydraulic pump is connect with fuel tank,
The oil outlet P of hydraulic pump by the P mouth connection of the first check valve and main reversing valve, the T mouth of main reversing valve and A mouthfuls respectively with fuel tank
It is connected with the rod chamber of boom cylinder；
The B mouth of the main reversing valve oil outlet with the A of switching valve mouth, the oil inlet of second one-way valve and the 4th check valve respectively
The A mouth connection of connection, the oil inlet of the 4th check valve and hydraulic motor, the P mouth of hydraulic motor, the oil outlet of second one-way valve and
The P mouth of switching valve is connect with the rodless cavity of boom cylinder；The A mouth that the control mouth of switching valve passes through throttling son and main reversing valve
Connection；
The output shaft of hydraulic motor is connect by first clutch with the shaft of flywheel one end, and the shaft of the flywheel other end is logical
It is coaxially connected with auxiliary hydraulic pump to cross second clutch；
The inlet port S of auxiliary hydraulic pump is connect with fuel tank, and the oil outlet P of auxiliary hydraulic pump and the P mouth of main reversing valve connect；
The input terminal of the controller and the output end of control crank connect, and the output end of the controller is changed with master respectively
It is connected to valve, first clutch, second clutch, hydraulic pump, hydraulic motor with auxiliary hydraulic pump.
Further, work to be effectively protected system in setting pressure, P mouth of main reversing valve also by overflow valve and
Fuel tank connection.
Further, for the ease of changing transmission ratio, the first change is also serially connected between the hydraulic motor and first clutch
Fast device；The second speed changer is also serially connected between the second clutch and auxiliary hydraulic pump.
The utility model carries out the conversion of energy by hydraulic motor and is stored in flywheel during swing arm declines
In, avoid the waste of energy during swing arm decline.Meanwhile this programme can also be by the energy back of storage in hydraulic system
In.When swing arm needs to be promoted, the form that flywheel driving auxiliary hydraulic pump can make the mechanical energy of storage become pressure energy is efficient
It adds in hydraulic system, is used for boom arm lift process.Energy is filled by the actuation or disconnection of controller control clutch to control
Or exergonic process, it can more convenient, efficiently control the conversion of energy or recycle process.The setting of switching valve can automatically judge
Whether swing arm decentralization process has energy to can be carried out recycling out, after the rod chamber pressure rise of boom cylinder, can automatically cut
Internal oil passages are changed and are connected, so that the oil liquid of boom cylinder rodless cavity is no longer pass through hydraulic motor and directly flows back to fuel tank, In
When the rod chamber pressure of boom cylinder is lower, switching valve internal oil passages are in an off state always so that boom cylinder without
The oil liquid of rod cavity passes through hydraulic motor, to carry out the recycling of energy in swing arm dropping process.Second clutch and auxiliary hydraulic pump
Setting, can be recycled convenient for the energy of flywheel recycling, the high-voltage oil liquid of auxiliary hydraulic pump discharge be directly entered the P of main reversing valve
Mouthful, collaborated with being formed with hydraulic pump oil extraction, provides oil liquid jointly by the oil liquid behind interflow for system, reduce to prime mover function
The demand of rate reduces the energy consumption of prime mover.The setting of second one-way valve and the 4th check valve, can guarantee main reversing valve
The oil liquid of B mouthfuls of discharges will not drive hydraulic motor to rotate, and can fully enter in the rodless cavity of boom cylinder.First check valve
Setting, can guarantee that the oil liquid of auxiliary hydraulic pump discharge will not reversely flow into the oil outlet of hydraulic pump.The system structure is simple, easily
In realization, the power demand to prime mover can be reduced, system is made to select smaller number prime mover, there is significant energy conservation effect
Fruit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of excavator in the prior art；
Fig. 2 is the simplified pinciple figure of excavator swing arm hydraulic system in the prior art；
Fig. 3 is the hydraulic schematic diagram of one embodiment in the utility model；
Fig. 4 is the hydraulic schematic diagram of second embodiment in the utility model；
Fig. 5 is the simplified pinciple figure of the another embodiment of flywheel energy storage unit in the utility model.
In figure: 1, hydraulic pump, the 2, first check valve, 3, main reversing valve, 4, boom cylinder, 5, fuel tank, 6, prime mover, 7,
Hydraulic motor, 8, flywheel, 9, first clutch, 10, overflow valve, 11, second clutch, 12, auxiliary hydraulic pump, 13, switching valve,
14, second one-way valve, 15, throttling, 16, third check valve, the 17, first speed changer, the 18, second speed changer, the 19, the 5th is unidirectional
Valve, the 21, the 4th check valve, 22, control oil circuit, 100, swing arm, 200, turntable.
Specific embodiment
Below with reference to embodiment, the utility model is described in further detail.
Embodiment 1:
A kind of movable arm potential energy energy regenerating and the system of utilizing, including prime mover 6, hydraulic pump 1, main reversing valve 3, swing arm are hydraulic
Cylinder 4, fuel tank 5, the control crank for manipulating swing arm, third check valve 16 and controller, described prime mover 6 and hydraulic pump 1 are same
The oil outlet P of axis connection, hydraulic pump 1 is connect by the first check valve 2 with the P of main reversing valve 3 mouth, the T mouth and A of main reversing valve 3
Mouth is connect with the rod chamber of fuel tank 5 and boom cylinder 4 respectively；
The oil inlet of the third check valve 16 is connect with fuel tank 5, the suction of the oil outlet and hydraulic pump 1 of third check valve 16
Hydraulic fluid port S connection, the B mouth of main reversing valve 3 oil inlet and the 4th check valve with the A of switching valve 13 mouth, second one-way valve 14 respectively
21 oil outlet connection, the oil inlet of the 4th check valve 21 are connect with the A of hydraulic motor 7 mouth, the P mouth of hydraulic motor 7, the second list
The P mouth of oil outlet and switching valve 13 to valve 14 is connect with the rodless cavity of boom cylinder 4；The control mouth of switching valve 13 passes through
Throttling 15 is connect with the A of main reversing valve 3 mouth；
Hydraulic motor 7 is connect by first clutch 9 with the shaft of 8 one end of flywheel, and the shaft of 8 other end of flywheel passes through
Second clutch 11 and auxiliary hydraulic pump 12 are coaxially connected；
The inlet port S of auxiliary hydraulic pump 12 is connect with fuel tank 5, the oil suction of the oil outlet P and hydraulic pump 1 of auxiliary hydraulic pump 12
Mouth S connection；As a preference, inlet port S of the oil outlet P of auxiliary hydraulic pump 12 by the 5th check valve 19 and hydraulic pump 1
Connection.
The input terminal of the controller and the output end of control crank connect, and the output end of the controller is changed with master respectively
It is connected to valve 3, first clutch 9, second clutch 11, hydraulic pump 1, hydraulic motor 7 and auxiliary hydraulic pump 12.
As a preference, the switching valve 13 uses 2/2-way pilot operated directional control valve, work is at left position, P mouthfuls and A
Oil communication between mouthful, at right position, the oil circuit between P mouthfuls and A mouthfuls is disconnected for work.
It works to be effectively protected system in setting pressure, the P mouth of main reversing valve 3 also passes through overflow valve 10 and fuel tank
5 connections.
Embodiment 2:
A kind of movable arm potential energy energy regenerating and the system of utilizing, including prime mover 6, hydraulic pump 1, main reversing valve 3, swing arm are hydraulic
Cylinder 4, fuel tank 5, control crank and controller for manipulating swing arm, described prime mover 6 and hydraulic pump 1 are coaxially connected, hydraulic pump 1
Inlet port S connect with fuel tank 5, the oil outlet P of hydraulic pump 1 is connect by the first check valve 2 with the P of main reversing valve 3 mouth, is led and is changed
It is connect respectively with the rod chamber of fuel tank 5 and boom cylinder 4 to the T mouth of valve 3 and A mouthfuls；
The B mouth of main reversing valve 3 oil inlet and the 4th check valve 21 with the A of switching valve 13 mouth, second one-way valve 14 respectively
Oil outlet connection, the oil inlet of the 4th check valve 21 connect with the A of hydraulic motor 7 mouth, and the P mouth of hydraulic motor 7, second are unidirectionally
The oil outlet of valve 14 and the P mouth of switching valve 13 are connect with the rodless cavity of boom cylinder 4；The control mouth of switching valve 13 passes through section
Stream 15 is connect with the A of main reversing valve 3 mouth；
The output shaft of hydraulic motor 7 is connect by first clutch 9 with the shaft of 8 one end of flywheel, and 8 other end of flywheel turns
Axis is coaxially connected by second clutch 11 and auxiliary hydraulic pump 12；
The inlet port S of auxiliary hydraulic pump 12 is connect with fuel tank 5, the oil outlet P of auxiliary hydraulic pump 12 and the P of main reversing valve 3
Mouth connection；As a preference, P mouth company of the oil outlet P of auxiliary hydraulic pump 12 by the 5th check valve 19 and main reversing valve 3
It connects.
The input terminal of the controller and the output end of control crank connect, and the output end of the controller is changed with master respectively
It is connected to valve 3, first clutch 9, second clutch 11, hydraulic pump 1, hydraulic motor 7 and auxiliary hydraulic pump 12.
As a preference, the switching valve 13 uses 2/2-way pilot operated directional control valve, work is at left position, P mouthfuls and A
Oil communication between mouthful, at right position, the oil circuit between P mouthfuls and A mouthfuls is disconnected for work.
It works to be effectively protected system in setting pressure, the P mouth of main reversing valve 3 also passes through overflow valve 10 and fuel tank
5 connections.
Working principle:
One, embodiment 1:
In conjunction with Fig. 3, the working principle of embodiment 1 is described further.
1.1 swing arm decentralization processs (movable arm potential energy recycling):
After controller (not shown) receives the instruction of swing arm decentralization of control crank sending, make the electromagnet of main reversing valve 3
Y1b obtain it is electric, clutch 9 electric actuation.In conjunction with Fig. 3, the oil liquid that hydraulic pump 1 is discharged is through the first check valve 2, the P mouth of main reversing valve 3
To A mouthfuls, into the rod chamber of boom cylinder 4.Since effect has the load such as swing arm on boom cylinder 4, boom cylinder 4
The pressure very little of rod chamber.High-voltage oil liquid in 4 rodless cavity of boom cylinder flows into the P mouth of hydraulic motor 7, and low pressure oil liquid is through it
The B mouth through main reversing valve 3 flows back to fuel tank to T mouthfuls after A mouthfuls of outflows.7 output mechanical energy of hydraulic motor, drives through first clutch 9
Flywheel 8 accelerates rotation.Therefore, movable arm potential energy is converted to the mechanical energy of flywheel 8.By rationally controlling the discharge capacity of hydraulic motor 7, i.e.,
The lowering velocity of the load of adjustable boom cylinder 4.The pressure energy that the high-voltage oil liquid that boom cylinder 4 is discharged has, big portion
Lease making hydraulic motor 7 is converted into the mechanical energy of flywheel 8, and the energy consumed on the valve port of main reversing valve 3 is seldom.
When for some reason, such as scraper bowl contacts to earth, and when swing arm cannot continue reliance on gravity decentralization, swing arm must be dynamic
It could continue to move downward under the drive of arm hydraulic cylinder 4.At this point, hydraulic pump 1 will provide high pressure oil for 4 rod chamber of boom cylinder
Liquid, the oil liquid of rodless cavity also no longer have very high pressure.This means that swing arm does not have recuperable potential energy at this time.Into dynamic
After the oil liquid pressure of 4 rod chamber of arm hydraulic cylinder increases, switching valve 13 will be made to commutate by controlling oil circuit 22, switching valve 13 works
In left position.In this way, the oil liquid of 4 rodless cavity of boom cylinder is just no longer flow towards hydraulic motor 7, but through the P of switching valve 13 mouth to A
Mouthful, the B mouth of main reversing valve 3 flows back to fuel tank 5 to T mouthfuls.At this point, the not recycling movable arm potential energy of hydraulic motor 7.
Throttling 15 is provided on control oil circuit 22, when can fluctuate to avoid the input pressure of 4 rod chamber of boom cylinder
Cause the malfunction of switching valve 13.
1.2 boom arm lift processes (energy recycling)
After controller (not shown) receives the instruction of the boom arm lift of control crank sending, make the electromagnet of main reversing valve 3
Y1a obtains electric, and the work of main reversing valve 3 is in right position, and oil liquid that hydraulic pump 1 provides is through the first check valve 2, the P mouth of main reversing valve 3 to B
Mouthful, second one-way valve 14 enters the rodless cavity of boom cylinder 4, and the oil liquid of rod chamber is through the A of main reversing valve 3 mouth to T mouthfuls of streams
Oil return box 5.The piston rod of boom cylinder 4 stretches out, boom arm lift movement in corresponding diagram 1.Meanwhile controller (not shown) makes
Two clutches 11 are attracted, and flywheel 8 drives auxiliary hydraulic pump 12 to work by second clutch 11.The oil that auxiliary hydraulic pump 12 is discharged
Liquid stream enters the inlet port of hydraulic pump 1.Because the oil liquid that auxiliary hydraulic pump 12 is discharged has certain pressure, being equivalent to reduces liquid
The pressure difference of the oil inlet and outlet of press pump 1, it is possible to reduce hydraulic pump 1 to the power demand of prime mover 6, reduce energy and disappear
Consumption.Further, in the design phase of equipment, lesser prime mover model can be suitably selected, the volume and weight of equipment is reduced.
Due to being provided with second one-way valve 14 and the 4th check valve 21, the oil liquid of the B mouth discharge of main reversing valve 3 will not be driven
Hydraulic motor 7 rotates, in the rodless cavity that can fully enter boom cylinder 4.
Due to being provided with third check valve 16, the oil liquid that auxiliary hydraulic pump 12 is discharged will not directly flow back to fuel tank, cause back
Receive the waste of energy.
Two, embodiment 2:
In conjunction with Fig. 4, the working principle of embodiment 2 is described further.
2.1 swing arm decentralization processs (movable arm potential energy recycling):
This part and the corresponding part working principle of embodiment 1 are almost the same, and therefore not to repeat here.
2.2 boom arm lift processes (energy recycling)
After controller (not shown) receives the instruction of boom arm lift, the electromagnet Y1a of main reversing valve 3 is made to obtain electric, main commutation
The work of valve 3 is in right position, and oil liquid that hydraulic pump 1 provides is through the first check valve 2, and the P mouth of main reversing valve 3 is to B mouthfuls, second one-way valve 14
Into the rodless cavity of boom cylinder 4, the oil liquid of rod chamber flows back to fuel tank 5 to T mouthfuls through the A of main reversing valve 3 mouth.Swing arm is hydraulic
The piston rod of cylinder 4 stretches out, boom arm lift movement in corresponding diagram 1.Meanwhile controller (not shown) is attracted second clutch 11,
Flywheel 8 drives auxiliary hydraulic pump 12 to work by second clutch 11.The oil liquid that auxiliary hydraulic pump 12 is discharged flows into hydraulic pump 1
Oil discharge outlet and hydraulic pump 1 provide oil liquid jointly for system.Because auxiliary hydraulic pump 12 provides partial high pressure oil liquid, reduce
The flow of hydraulic pump 1 also reduces the power demand to prime mover 6, reduces energy consumption.It, can in the design phase of equipment
Suitably to select prime mover and hydraulic pump compared with ting model, reduce the volume and weight of equipment.
Due to being provided with second one-way valve 10 and the 4th check valve 21, the oil liquid of the B mouth discharge of main reversing valve 3 will not be driven
Hydraulic motor 7 rotates, in the rodless cavity that can fully enter boom cylinder 4.
Due to being provided with the first check valve 2, the oil liquid that auxiliary hydraulic pump 12 is discharged under any circumstance will not reverse flow
Enter the oil outlet of hydraulic pump 1.
It,, can to improve the energy storage density of system in order to improve the revolving speed of flywheel 8 in the two above embodiments
To add the first speed changer 17 between the hydraulic motor 7 and first clutch 9, as shown in Figure 5.Similarly, energy again
Using on transmission chain, in order to make the speeds match of flywheel 8 and auxiliary hydraulic pump 12, in second clutch 11 and auxiliary hydraulic pump 12
Between add the second speed changer 18.First and second speed changers can be infinitely variable speed transmission.As a kind of letter
Change, the transmission device of grade or fixed drive ratio also can be used.But the energy recovery and reuse of system can be reduced in this way
Efficiency.
Claims (6)
1. a kind of movable arm potential energy energy regenerating and the system of utilizing, including prime mover (6), hydraulic pump (1), main reversing valve (3), swing arm
Hydraulic cylinder (4), fuel tank (5) and the control crank for manipulating swing arm, the prime mover (6) and hydraulic pump (1) are coaxially connected, liquid
The oil outlet P of press pump (1) is connect by the first check valve (2) with the P mouth of main reversing valve (3), the T mouth of main reversing valve (3) with A mouthfuls
It is connect respectively with the rod chamber of fuel tank (5) and boom cylinder (4), which is characterized in that further include third check valve (16) and control
Device processed；
The oil inlet of the third check valve (16) is connect with fuel tank (5), the oil outlet of third check valve (16) and hydraulic pump (1)
Inlet port S connection, the B mouth of main reversing valve (3) respectively with the A mouth of switching valve (13), second one-way valve (14) oil inlet and
The oil outlet of 4th check valve (21) connects, and the oil inlet of the 4th check valve (21) is connect with the A mouth of hydraulic motor (7), hydraulic
Rodless cavity of the P mouth of the P mouth of motor (7), the oil outlet of second one-way valve (14) and switching valve (13) with boom cylinder (4)
Connection；The control mouth of switching valve (13) is connect by the son (15) that throttles with the A mouth of main reversing valve (3)；
The output shaft of hydraulic motor (7) is connect by first clutch (9) with the shaft of flywheel (8) one end, flywheel (8) other end
Shaft by second clutch (11) and auxiliary hydraulic pump (12) it is coaxially connected；
The inlet port S of auxiliary hydraulic pump (12) is connect with fuel tank (5), oil outlet P and hydraulic pump (1) of auxiliary hydraulic pump (12)
Inlet port S connection；
The output end of the input terminal of the controller and control crank connects, the output end of the controller respectively with main reversing valve
(3), first clutch (9), second clutch (11), hydraulic pump (1), hydraulic motor (7) and auxiliary hydraulic pump (12) connection.
2. a kind of movable arm potential energy energy regenerating according to claim 1 and the system of utilizing, which is characterized in that the hydraulic horse
Up to being also serially connected with the first speed changer (17) between (7) and first clutch (9)；The second clutch (11) and auxiliary hydraulic pump
(12) the second speed changer (18) are also serially connected between.
3. a kind of movable arm potential energy energy regenerating according to claim 1 or 2 and the system of utilizing, which is characterized in that main commutation
The P mouth of valve (3) is also connect by overflow valve (10) with fuel tank (5).
4. a kind of movable arm potential energy energy regenerating and the system of utilizing, which is characterized in that changed including prime mover (6), hydraulic pump (1), master
To valve (3), boom cylinder (4), fuel tank (5) and control crank for manipulating swing arm, the prime mover (6) and hydraulic pump
(1) coaxially connected, the inlet port S of hydraulic pump (1) is connect with fuel tank (5), and the oil outlet P of hydraulic pump (1) passes through the first check valve
(2) connect with the P mouth of main reversing valve (3), the T mouth of main reversing valve (3) and A mouthfuls respectively with fuel tank (5) and boom cylinder (4)
Rod chamber connection, which is characterized in that further include controller；
The B mouth of main reversing valve (3) oil inlet and the 4th check valve with the A mouth of switching valve (13), second one-way valve (14) respectively
(21) oil outlet connection, the oil inlet of the 4th check valve (21) are connect with the A mouth of hydraulic motor (7), the P of hydraulic motor (7)
The P mouth of mouth, the oil outlet of second one-way valve (14) and switching valve (13) is connect with the rodless cavity of boom cylinder (4)；Switching
The control mouth of valve (13) is connect by the son (15) that throttles with the A mouth of main reversing valve (3)；
The output shaft of hydraulic motor (7) is connect by first clutch (9) with the shaft of flywheel (8) one end, flywheel (8) other end
Shaft by second clutch (11) and auxiliary hydraulic pump (12) it is coaxially connected；
The inlet port S of auxiliary hydraulic pump (12) is connect with fuel tank (5), the oil outlet P of auxiliary hydraulic pump (12) and main reversing valve (3)
P mouth connection；
The output end of the input terminal of the controller and control crank connects, the output end of the controller respectively with main reversing valve
(3), first clutch (9), second clutch (11), hydraulic pump (1), hydraulic motor (7) and auxiliary hydraulic pump (12) connection.
5. a kind of movable arm potential energy energy regenerating according to claim 4 and the system of utilizing, which is characterized in that the hydraulic horse
Up to being also serially connected with the first speed changer (17) between (7) and first clutch (9)；The second clutch (11) and auxiliary hydraulic pump
(12) the second speed changer (18) are also serially connected between.
6. a kind of movable arm potential energy energy regenerating according to claim 4 or 5 and the system of utilizing, which is characterized in that main commutation
The P mouth of valve (3) is also connect by overflow valve (10) with fuel tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822216462.3U CN209604334U (en) | 2018-12-27 | 2018-12-27 | Movable arm potential energy energy regenerating and the system of utilizing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822216462.3U CN209604334U (en) | 2018-12-27 | 2018-12-27 | Movable arm potential energy energy regenerating and the system of utilizing |
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| Publication Number | Publication Date |
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| CN209604334U true CN209604334U (en) | 2019-11-08 |
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| CN201822216462.3U Expired - Fee Related CN209604334U (en) | 2018-12-27 | 2018-12-27 | Movable arm potential energy energy regenerating and the system of utilizing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111851615A (en) * | 2020-07-08 | 2020-10-30 | 柳州柳工挖掘机有限公司 | Swing arm descending energy recovery hydraulic system and excavator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111851615A (en) * | 2020-07-08 | 2020-10-30 | 柳州柳工挖掘机有限公司 | Swing arm descending energy recovery hydraulic system and excavator |
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