CN205804461U - Excavator recovers energy and utilizes system - Google Patents
Excavator recovers energy and utilizes system Download PDFInfo
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- CN205804461U CN205804461U CN201620684280.7U CN201620684280U CN205804461U CN 205804461 U CN205804461 U CN 205804461U CN 201620684280 U CN201620684280 U CN 201620684280U CN 205804461 U CN205804461 U CN 205804461U
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Abstract
The open a kind of excavator of this utility model recovers energy and utilizes system, mainly motor loop is driven to constitute by pump control fan motor loop, accumulator control fan motor loop, accumulator control, the hydraulic motor for independent heat radiation is directly driven by will be stored in recovering energy in accumulator, middle without other links, transmission efficiency is high；, do not couple with operating cylinder and motor meanwhile, do not affect complete machine handling；Design accumulator control drives motor loop and pump control fan motor loop, when ambient temperature is relatively low, excavator hydraulic oil and engine cooling water system need not independent heat radiation, or accumulator energy is when can not meet independent cooling system energy requirement, this utility model system can close accumulator control fan motor loop, it is switched to accumulator control and drives motor loop, or close accumulator control driving motor loop, it is switched to pump control fan motor loop, so, the energy efficient that can make recovery utilizes, and in turn ensure that independent cooling system reliably working.
Description
Technical field
This utility model relates to one and recovers energy and utilize system, and specifically a kind of excavator recovers energy and utilizes system,
Belong to excavator to recover energy technical field.
Background technology
Developing rapidly along with socioeconomic, energy shortage and problem of environmental pollution are on the rise, and each state will reduce the most
Energy loss, protection environment are brought into schedule.And Energy Efficiency Ratio is one of key parameter of the hydraulic crawler excavator market competition, therefore hydraulic pressure digs
The Study on energy saving of pick machine and apply particularly necessary.
At present, country's 13 science and technology supporting projects have been listed in oil-liquid hybrid electric technical research in, as based on excavating function
The hydraulic hybrid Study on energy saving of amount recovery and application, mainly can be carried out excavator swing arm potential energy, rotary braking
Reclaiming, the energy of recovery is stored by accumulator.The energy recycling reclaimed generally has directly or indirectly two kinds.Directly profit
Driving operating cylinder or motor with referring to be directly used in, its transmission efficiency is high, but have impact on complete machine handling.Profit indirectly
Being discharged by servo-motor by the energy of recovery with referring to, jointly drive hydraulic pressure main pump with electromotor, this energy discharges
Mode on complete machine, handling without impact, but transmission link is many, energy utilization efficiency is low.
Summary of the invention
The problem existed for above-mentioned prior art, this utility model provides a kind of excavator to recover energy and utilizes system,
Be possible not only to eliminate in accumulator the intermediate transmission link utilized that recovered energy, improve energy utilization efficiency, and with work
Oil cylinder and motor do not couple, and do not affect the handling of complete machine.
To achieve these goals, a kind of excavator that this utility model uses recovers energy and utilizes system, including fuel tank,
First volume adjustable hydraulic pump, the first variable hydraulic motor, the second volume adjustable hydraulic pump, the first automatically controlled direction valve, the first check valve, second
Check valve, the second automatically controlled direction valve, the 3rd automatically controlled direction valve, the first fan, the second variable hydraulic motor, the second fan, the 3rd
Variable hydraulic motor, the 3rd check valve, the 4th automatically controlled direction valve, hydraulic jack, accumulator, hydraulic motor, overflow valve and safety
Valve, is divided into pump control fan motor loop, accumulator control fan motor loop and accumulator control to drive motor loop, and three loops can
Independent control starts, stops and motor rotary speed, it is also possible to any two loop starts simultaneously, or three loops start simultaneously；Institute
State pump control fan motor loop by the second volume adjustable hydraulic pump, the first check valve, the second check valve, the 3rd automatically controlled direction valve, second
Variable hydraulic motor, ternary hydraulic motor, the second automatically controlled direction valve and relief valve are constituted, described accumulator control fan motor
Loop is made up of the second variable hydraulic motor, the 3rd check valve, the 4th automatically controlled direction valve, accumulator and overflow valve, described accumulation of energy
Device control drive motor loop by the first variable hydraulic motor, the first automatically controlled direction valve, the 3rd check valve, the 4th automatically controlled direction valve,
Accumulator and overflow valve are constituted, and the import of the oil-out of the second volume adjustable hydraulic pump and the first check valve, the second check valve is connected, other
Road is connected with relief valve；The outlet of the first check valve is connected with the 3rd automatically controlled direction valve import, the outlet of the second check valve and the
Two automatically controlled direction valves are connected for oil inlet, and the 3rd automatically controlled direction valve is for oil export and the oil-feed A mouth phase of the second variable hydraulic motor
Even, the oil return B mouth of the second variable hydraulic motor and the 3rd automatically controlled direction valve oil return import are connected；3rd automatically controlled direction valve fuel feeding goes out
Mouth is connected for oil inlet A mouth with ternary hydraulic motor, the oil return B mouth of ternary hydraulic motor and the second automatically controlled direction
Valve oil return import is connected, and the 3rd automatically controlled direction valve oil return outlet is all connected with fuel tank with the second automatically controlled direction valve oil return outlet, the
Two variable hydraulic motor output shafts and the first fan are connected, and ternary hydraulic motor output shaft and the second fan are connected；Accumulation of energy
Device oil-in is connected with hydraulic jack and hydraulic pressure motor oil, and accumulator oil-out and the 4th automatically controlled direction valve oil-in are connected,
Accumulator fuel-displaced bypass hydraulic fluid port is connected with overflow valve, and the 4th automatically controlled direction valve oil-out and the 3rd check valve oil-in are connected, the
Three check valve oil-outs simultaneously with the second variable hydraulic motor fuel feeding A mouth, ternary hydraulic motor fuel feeding A mouth, first automatically controlled
Direction valve oil-in is connected, and the first automatically controlled direction valve oil-out and the first variable hydraulic motor oil-in are connected, the first variable liquid
Pressure motor oil-out is connected with fuel tank；Fuel tank and the first volume adjustable hydraulic pump, the second volume adjustable hydraulic pump are connected.
Preferably, described second volume adjustable hydraulic pump drives the second variable hydraulic motor and the 3rd by the 3rd automatically controlled direction valve
Variable hydraulic motor, the second variable hydraulic motor and ternary hydraulic motor are volumetric speed control, by detection load pressure, storage
Energy device pressure, water temperature, the discharge capacity of Oil-temperature control self, the second volume adjustable hydraulic pump is two point form variable pump, and minimum injection rate is zero, the
Two variable hydraulic motors and ternary hydraulic motor are continuous variable electric-controlled hydraulic motor, the second automatically controlled direction valve, the 3rd electricity
Control direction valve is switch valve, and the switch of oil circuit control designs in actual type selecting as required, the second automatically controlled direction valve, the 3rd electricity
Control direction valve is for controlling the second variable hydraulic motor and the startup of ternary hydraulic motor and stopping, and relief valve controls second
The output pressure of volume adjustable hydraulic pump.
Preferably, described 4th automatically controlled direction valve is switch valve, opens and closes control for controlling the energy release of accumulator；Store
The second variable hydraulic motor and the work of ternary hydraulic motor can be driven, by adjusting the second variable hydraulic motor and the 3rd by device
The discharge capacity of variable hydraulic motor controls the first fan and the rotation of the second fan；Overflow valve controls accumulator topping up and release pressure
Power.
Preferably, described first automatically controlled direction valve is switch valve, for controlling the startup of the first variable hydraulic motor and stopping
Only.
Preferably, described first variable hydraulic motor and the first volume adjustable hydraulic pump are integrated in parallel by series connection or power taking mouth,
Or transfer case form integrates.
Preferably, preset engine water temperature, hydraulic oil temperature, energy storage pressure and engine load rate operational target value, when
Engine water gentleness hydraulic oil temperature, higher than time in the range of target setting, if accumulator stores energy and possesses release conditions, starts and stores
Energy device control fan motor loop, closes pump control fan motor loop, closes accumulator control and drives motor loop；Work as engine water temperature
During with hydraulic oil temperature in the range of target setting, if accumulator stores energy and possesses release conditions, start accumulator control fan horse
Reach loop, close pump control fan motor loop, close accumulator control and drive motor loop；When engine water gentleness hydraulic oil temperature is low
Time in the range of target setting, if accumulator stores energy and possesses release conditions, close pump control fan motor loop, close accumulation of energy
Device control fan motor loop, starts accumulator control and drives motor loop；If accumulator stores energy does not possess release conditions, close
Pump control fan motor loop, closes accumulator control fan motor loop, closes accumulator control and drives motor loop.
Compared with prior art, this utility model mainly by pump control fan motor loop, accumulator control fan motor loop,
Accumulator control drives motor loop to constitute；Will be stored in recovering energy in accumulator and directly drive the hydraulic pressure for independent heat radiation
Motor, middle without other links, transmission efficiency is high, does not couples with operating cylinder and motor meanwhile, does not affect complete machine manipulation
Performance, additionally, design accumulator control drives motor loop and pump control fan motor loop, when ambient temperature is relatively low, excavator liquid
Force feed and engine cooling water system need not independent heat radiation, or accumulator energy can not meet independent cooling system energy requirement
Time, this utility model system can be closed accumulator control fan motor loop, is switched to accumulator control and drive motor loop, or close
Close accumulator control and drive motor loop, be switched to pump control fan motor loop, as such, it is possible to make the energy efficient of recovery utilize,
In turn ensure that independent cooling system reliably working.This utility model system has integrated simple, reliable, low cost, transmission efficiency
High feature.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is theory diagram of the present utility model.
In figure: 1, fuel tank, the 2, first volume adjustable hydraulic pump, the 3, first variable hydraulic motor, the 4, second volume adjustable hydraulic pump, 5,
One automatically controlled direction valve, the 6, first check valve, the 7, second check valve, the 8, second automatically controlled direction valve, the 9, the 3rd automatically controlled direction valve, 10,
First fan, the 11, second variable hydraulic motor, the 12, second fan, 13, ternary hydraulic motor, the 14, the 3rd check valve,
15, the 4th automatically controlled direction valve, 16, hydraulic jack, 17, accumulator, 18, hydraulic motor, 19, overflow valve, 20, relief valve.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 2, a kind of excavator recovers energy and utilizes system, mainly by pump control fan motor loop, accumulation of energy
Device control fan motor loop and accumulator control drive motor loop to constitute, and three loops can independently control to start, stop and motor
Rotating speed, it is also possible to any two loop starts simultaneously, or three loops start simultaneously；Including fuel tank the 1, first volume adjustable hydraulic pump 2,
First variable hydraulic motor the 3, second volume adjustable hydraulic pump 4, first automatically controlled direction valve the 5, first check valve the 6, second check valve 7,
Two automatically controlled direction valve the 8, the 3rd automatically controlled direction valve the 9, first fan the 10, second variable hydraulic motor the 11, second fans the 12, the 3rd become
Measure hydraulic motor the 13, the 3rd automatically controlled direction valve 15 of check valve the 14, the 4th, hydraulic jack 16, accumulator 17, hydraulic motor 18, overflow
Stream valve 19 and relief valve 20, described pump control fan motor loop is by second volume adjustable hydraulic pump the 4, first check valve the 6, second check valve
7, the 3rd automatically controlled direction valve the 9, second variable hydraulic motor 11, ternary hydraulic motor the 13, second automatically controlled direction valve 8 and safety
Valve 20 is constituted, and described accumulator control fan motor loop is by the second variable hydraulic motor the 11, the 3rd automatically controlled side of check valve the 14, the 4th
Constitute to valve 15, accumulator 17 and overflow valve 19, described accumulator control drive motor loop by the first variable hydraulic motor 3, the
One automatically controlled direction valve the 5, the 3rd automatically controlled direction valve 15 of check valve the 14, the 4th, accumulator 17 and overflow valve 19 are constituted, the second variable liquid
The oil-out of press pump 4 and the import of first check valve the 6, second check valve 7 are connected, and bypass is connected with relief valve 20；First is unidirectional
The outlet of valve 6 is connected with the 3rd automatically controlled direction valve 9 import, and the outlet of the second check valve 7 and the second automatically controlled direction valve 8 are for oil inlet
Being connected, the 3rd automatically controlled direction valve 9 is connected for the oil-feed A mouth of oil export and the second variable hydraulic motor 11, the second variable delivery hydraulic horse
Reach 11 oil return B mouth and the 3rd automatically controlled direction valve 9 oil return import be connected；3rd automatically controlled direction valve 8 is for oil export and ternary
Being connected for oil inlet A mouth of hydraulic motor 13, the oil return B mouth of ternary hydraulic motor 13 and the second automatically controlled direction valve 8 oil return
Import is connected, and the 3rd automatically controlled direction valve 9 oil return outlet is all connected with fuel tank 1 with the second automatically controlled direction valve 8 oil return outlet, and second becomes
Amount hydraulic motor 11 output shaft and the first fan 10 are connected, and ternary hydraulic motor 13 output shaft and the second fan 12 are connected；
Accumulator 17 oil-in is connected with hydraulic jack 16 and hydraulic motor 18 hydraulic fluid port, accumulator 17 oil-out and the 4th automatically controlled direction valve
15 oil-ins are connected, and accumulator 17 fuel-displaced bypass hydraulic fluid port is connected with overflow valve 19, the 4th automatically controlled direction valve 15 oil-out and the 3rd
Check valve 14 oil-in is connected, with the second variable hydraulic motor 11 fuel feeding A mouth, ternary the while of the 3rd check valve 14 oil-out
Hydraulic motor 13 fuel feeding A mouth, the first automatically controlled direction valve 5 oil-in are connected, the first automatically controlled direction valve 5 oil-out and the first variable liquid
Pressure motor 3 oil-in is connected, and the first variable hydraulic motor 3 oil-out is connected with fuel tank 1；Fuel tank 1 and the first volume adjustable hydraulic pump 2,
Second volume adjustable hydraulic pump 4 is connected.
Preferably, described second volume adjustable hydraulic pump 4 drives the second variable hydraulic motor 11 He by the 3rd automatically controlled direction valve 9
Ternary hydraulic motor 13, the second variable hydraulic motor 11 and ternary hydraulic motor 13 are volumetric speed control, by detection
The discharge capacity of load pressure, energy storage pressure, water temperature, Oil-temperature control self；Second volume adjustable hydraulic pump 4 is two point form variable pump,
Small displacement is zero, and the second variable hydraulic motor 11 and ternary hydraulic motor 13 are continuous variable electric-controlled hydraulic motor；Second
The automatically controlled direction valve 9 of automatically controlled direction valve the 8, the 3rd is switch valve, and the switch of oil circuit control designs in actual type selecting as required, its
Pressure loss is the smaller the better, such as optional two-way plug-in valve；The second automatically controlled direction valve 9 of automatically controlled direction valve the 8, the 3rd is for control second
Variable hydraulic motor 11 and the startup of ternary hydraulic motor 13 and stopping, relief valve 20 controls the second volume adjustable hydraulic pump 4
Output pressure.
Preferably, described 4th automatically controlled direction valve 15 is switch valve, the switch of oil circuit control, in actual type selecting as required
Design, its pressure loss is the smaller the better, such as optional two-way plug-in valve, opens and closes control for controlling the energy release of accumulator 17；
Accumulator 17 drives the second variable hydraulic motor 11 and ternary hydraulic motor 13 to work, by adjusting the second variable delivery hydraulic horse
Reach 11 and the discharge capacity of ternary hydraulic motor 13 control the first fan 10 and rotation of the second fan 12；Overflow valve 19 controls
Accumulator 17 topping up and release pressure.
Preferably, described first automatically controlled direction valve 5 is switch valve, the switch of oil circuit control, in actual type selecting as required
Design, its pressure loss is the smaller the better, optional two-way plug-in valve etc., is mainly used in controlling the startup of the first variable hydraulic motor 3
And stopping.
Preferably, described first variable hydraulic motor 3 integrated with the first volume adjustable hydraulic pump 2 by connect or power taking mouth also
Join, or transfer case form integrates.
Preferably, engine water temperature, hydraulic oil temperature, energy storage pressure and engine load can be preset by central controller
Rate operational target value, and by engine water temperature sensor, hydraulic oil temperature sensor, energy storage pressure sensor and automatically controlled
The CAN of motivation, obtains the signals such as engine water temperature, hydraulic oil temperature, energy storage pressure and engine load rate, passes through accumulation of energy
Device pressure can calculate judgement accumulator energy storage capacity；When in the range of engine water gentleness hydraulic oil temperature is higher than target setting, if
Accumulator stores energy and possesses release conditions, starts accumulator control fan motor loop, closes pump control fan motor loop, closes
Accumulator control drives motor loop；When engine water gentleness hydraulic oil temperature is in the range of target setting, if accumulator stores energy
Measurer, for release conditions, starts accumulator control fan motor loop, closes pump control fan motor loop, closes accumulator control and drives
Motor loop；When in the range of engine water gentleness hydraulic oil temperature is less than target setting, if accumulator stores energy and possesses release
Condition, closes pump control fan motor loop, closes accumulator control fan motor loop, starts accumulator control and drives motor loop；
If accumulator stores energy does not possess release conditions, close pump control fan motor loop, close accumulator control fan motor loop,
Close accumulator control and drive motor loop.
Work process:
Engine water temperature, hydraulic oil temperature, energy storage pressure and engine load rate work mesh is preset by central controller
Scale value, and by engine water temperature sensor, hydraulic oil temperature sensor, energy storage pressure sensor and electric-control motor
CAN, obtains the signals such as engine water temperature, hydraulic oil temperature, energy storage pressure and engine load rate, passes through energy storage pressure
Judgement accumulator energy storage capacity can be calculated.
When in the range of engine water gentleness hydraulic oil temperature is higher than target setting, if accumulator stores energy and possesses released strip
Part, starts accumulator control fan motor loop, closes pump control fan motor loop, closes accumulator control and drives motor loop, then
Electricity work given by 4th automatically controlled direction valve 15, and accumulator 17 energy discharges, drives the second variable hydraulic motor 11, ternary hydraulic pressure
Motor 13, central controller detection engine water gentleness hydraulic oil temperature, calculate and predetermined target value deviation, thus control the second change
Amount hydraulic motor 11 and the discharge capacity of ternary hydraulic motor 13, to control the first fan 10 and rotating speed of the second fan 12, this
Time, central controller controls the second volume adjustable hydraulic pump 4 is minimum injection rate, and the second automatically controlled direction valve 8 and the 3rd automatically controlled direction valve 9 are given
Electricity makes oil circuit disconnect, the first automatically controlled direction valve 5 power-off, and the first variable hydraulic motor 3 discharge capacity is adjusted to minimum；If accumulator 17 stores up
Deposit energy and do not possess release conditions, then electricity do not given by the 4th automatically controlled direction valve 15, and accumulator 17 quits work, central controller controls
Second volume adjustable hydraulic pump 4 is maximum pump discharge, and the second automatically controlled direction valve 8 and the 3rd automatically controlled direction valve 9 power-off make oil circuit get through, with
Time, according to engine water gentleness hydraulic oil temperature and predetermined target value deviation, control the second variable hydraulic motor 11 and ternary
The discharge capacity of hydraulic motor 13, thus control the first fan 10 and rotating speed of the second fan 12；Now, central controller controls first
The power-off of automatically controlled direction valve 5, the first variable hydraulic motor 3 discharge capacity is adjusted to minimum；
When engine water gentleness hydraulic oil temperature is in the range of target setting, if accumulator stores energy and possesses released strip
Part, starts accumulator control fan motor loop, closes pump control fan motor loop, closes accumulator control and drives motor loop, then
Electricity work given by 4th automatically controlled direction valve 15, and accumulator 17 energy discharges, drives the second variable hydraulic motor 11, ternary hydraulic pressure
Motor 13, central controller detection engine water gentleness hydraulic oil temperature, calculate and predetermined target value deviation, thus control the second change
Amount hydraulic motor 11 and the discharge capacity of ternary hydraulic motor 13, to control the first fan 10 and rotating speed of the second fan 12, this
Time, central controller controls the second volume adjustable hydraulic pump 4 is minimum injection rate, and the second automatically controlled direction valve 8 and the 3rd automatically controlled direction valve 9 are given
Electricity makes oil circuit disconnect, the first automatically controlled direction valve 5 power-off, and the first variable hydraulic motor 3 discharge capacity is adjusted to minimum, if accumulator 17 energy
Amount has surplus, powers to the first automatically controlled direction valve 5 the most simultaneously, adjusts the first variable hydraulic motor 3 discharge capacity, drive with assisted engine
Dynamic first volume adjustable hydraulic pump 2；If accumulator 17 stores energy does not possess release conditions, then electricity do not given by the 4th automatically controlled direction valve 15,
Accumulator 17 quits work, and central controller controls the second volume adjustable hydraulic pump 4 is maximum pump discharge, the second automatically controlled direction valve 8 and
Three automatically controlled direction valve 9 power-off make oil circuit get through, meanwhile, according to engine water gentleness hydraulic oil temperature and predetermined target value deviation, control
Make the second variable hydraulic motor 11 and discharge capacity of ternary hydraulic motor 13, thus control the first fan 10 and the second fan 12
Rotating speed, now, central controller controls first automatically controlled direction valve 5 power-off, the first variable hydraulic motor 3 discharge capacity is adjusted to
Little；
When in the range of engine water gentleness hydraulic oil temperature is less than target setting, if accumulator stores energy and possesses released strip
Part, closes pump control fan motor loop, closes accumulator control fan motor loop, starts accumulator control and drives motor loop, then
Central controller controls the second volume adjustable hydraulic pump 4 is minimum injection rate, and electricity given by the second automatically controlled direction valve 8 and the 3rd automatically controlled direction valve 9
Making oil circuit disconnect, meanwhile, the 4th automatically controlled direction valve 15 gives electricity work, accumulator 17 energy to electricity work, the first automatically controlled direction valve 5
Release, drives the first variable hydraulic motor 3, thus jointly drives the first volume adjustable hydraulic pump 2, central controller controls with electromotor
According to engine load rate, the power setting of the first volume adjustable hydraulic pump 2 and accumulator 17 energy state, control the first variable liquid
Press pump power, makes full use of the energy that accumulator 17 reclaims；If accumulator stores energy does not possess release conditions, close pump control wind
Fan motor loop, closes accumulator control fan motor loop, closes accumulator control and drives motor loop, then central controller controls
Second volume adjustable hydraulic pump 4 is minimum injection rate, and the second automatically controlled direction valve 8 and the 3rd automatically controlled direction valve 9 make oil circuit disconnect to electricity, with
Time, the 4th automatically controlled direction valve 15 power-off, the first automatically controlled direction valve 5 power-off, accumulator 17 stops energy release, the first variable delivery hydraulic
Motor 3 discharge capacity is adjusted to minimum.
It is appearance from said structure, this utility model pump control fan motor loop and accumulator control fan motor loop
Long-pending speed governing, compares valve-controlled motor loop transmission efficiency high, and meanwhile, accumulator directly drives fan motor to carry out energy release, passes
Rotating ring joint is minimum, simple in construction.Energy management stored by accumulator is efficient, returns not only by accumulator control fan motor
Road efficiently releases energy, and meanwhile, recovers energy and absorb new energy for making full use of, and can be driven by accumulator control simultaneously
Motor loop releases energy.Pump control fan motor loop, accumulator control fan motor loop and accumulator control is used to drive motor
Loop independently control mode, not only makes full use of and has recovered energy and absorbed new energy, guarantee system engine simultaneously
Water temperature and hydraulic oil temperature always work in optimum state, meanwhile, do not affect complete machine handling.Finally, the energy stored by accumulator
Amount can directly utilize in engine water gentleness hydraulic oil temperature cooling system, and transmission efficiency is high, and additional cost is low.Additionally, according to this
The dress of system conventional hydraulic element development can be used to have features such as high reliability, simple in construction, low cost, fuel-economizing be notable
Put.Making the device cost performance utilizing this utility model to be developed high, return period is short, has higher market popularization value.
Claims (6)
1. an excavator recovers energy and utilizes system, it is characterised in that include fuel tank (1), the first volume adjustable hydraulic pump (2),
One variable hydraulic motor (3), the second volume adjustable hydraulic pump (4), the first automatically controlled direction valve (5), the first check valve (6), second unidirectional
Valve (7), the second automatically controlled direction valve (8), the 3rd automatically controlled direction valve (9), the first fan (10), the second variable hydraulic motor (11),
Second fan (12), ternary hydraulic motor (13), the 3rd check valve (14), the 4th automatically controlled direction valve (15), hydraulic jack
(16), accumulator (17), hydraulic motor (18), overflow valve (19) and relief valve (20), be divided into pump control fan motor loop, accumulation of energy
Device control fan motor loop and accumulator control drive motor loop, three loops can independently control to start, stop and motor rotary speed,
Can also start in any two loop simultaneously, or three loops start simultaneously；
Described pump control fan motor loop by the second volume adjustable hydraulic pump (4), the first check valve (6), the second check valve (7), the 3rd
Automatically controlled direction valve (9), the second variable hydraulic motor (11), ternary hydraulic motor (13), the second automatically controlled direction valve (8) and peace
Full valve (20) is constituted,
Described accumulator control fan motor loop is by the second variable hydraulic motor (11), the 3rd check valve (14), the 4th automatically controlled side
Constitute to valve (15), accumulator (17) and overflow valve (19),
Described accumulator control drives motor loop by the first variable hydraulic motor (3), the first automatically controlled direction valve (5), the 3rd unidirectional
Valve (14), the 4th automatically controlled direction valve (15), accumulator (17) and overflow valve (19) are constituted,
The import of the oil-out of the second volume adjustable hydraulic pump (4) and the first check valve (6), the second check valve (7) is connected, and bypasses and pacifies
Full valve (20) is connected；The outlet of the first check valve (6) is connected with the 3rd automatically controlled direction valve (9) import, going out of the second check valve (7)
Mouth is connected for oil inlet with the second automatically controlled direction valve (8), and the 3rd automatically controlled direction valve (9) is for oil export and the second variable hydraulic motor
(11) oil-feed A mouth is connected, the oil return B mouth of the second variable hydraulic motor (11) and the 3rd automatically controlled direction valve (9) oil return import phase
Even；3rd automatically controlled direction valve (8) is connected for the oil inlet A mouth that supplies of oil export and ternary hydraulic motor (13), ternary
The oil return B mouth of hydraulic motor (13) and the second automatically controlled direction valve (8) oil return import are connected, and the 3rd automatically controlled direction valve (9) oil return goes out
Mouth is all connected with fuel tank (1) with the second automatically controlled direction valve (8) oil return outlet, the second variable hydraulic motor (11) output shaft and first
Fan (10) is connected, and ternary hydraulic motor (13) output shaft and the second fan (12) are connected；
Accumulator (17) oil-in is connected with hydraulic jack (16) and hydraulic motor (18) hydraulic fluid port, accumulator (17) oil-out and
Four automatically controlled direction valve (15) oil-ins are connected, and accumulator (17) fuel-displaced bypass hydraulic fluid port is connected with overflow valve (19), the 4th automatically controlled side
It is connected to valve (15) oil-out and the 3rd check valve (14) oil-in, with the second variable liquid while of the 3rd check valve (14) oil-out
Pressure motor (11) fuel feeding A mouth, ternary hydraulic motor (13) fuel feeding A mouth, the first automatically controlled direction valve (5) oil-in are connected, the
One automatically controlled direction valve (5) oil-out and the first variable hydraulic motor (3) oil-in are connected, and the first variable hydraulic motor (3) is fuel-displaced
Mouth is connected with fuel tank (1)；
Fuel tank (1) is connected with the first volume adjustable hydraulic pump (2), the second volume adjustable hydraulic pump (4).
A kind of excavator the most according to claim 1 recovers energy and utilizes system, it is characterised in that described second variable liquid
Press pump (4) drives the second variable hydraulic motor (11) and ternary hydraulic motor (13) by the 3rd automatically controlled direction valve (9), the
Two variable hydraulic motors (11) and ternary hydraulic motor (13) are volumetric speed control, by detection load pressure, accumulator pressure
The discharge capacity of power, water temperature, Oil-temperature control self, the second volume adjustable hydraulic pump (4) is two point form variable pump, and minimum injection rate is zero, second
Variable hydraulic motor (11) and ternary hydraulic motor (13) are continuous variable electric-controlled hydraulic motor, the second automatically controlled direction valve
(8), the 3rd automatically controlled direction valve (9) be switch valve, the switch of oil circuit control, actual type selecting designs as required, second is automatically controlled
Direction valve (8), the 3rd automatically controlled direction valve (9) are for controlling the second variable hydraulic motor (11) and ternary hydraulic motor (13)
Startup and stopping, relief valve (20) controls the output pressure of the second volume adjustable hydraulic pump (4).
A kind of excavator the most according to claim 1 recovers energy and utilizes system, it is characterised in that described 4th automatically controlled side
Being switch valve to valve (15), the energy release being used for controlling accumulator (17) opens and closes control；Accumulator (17) drives the second variable
Hydraulic motor (11) and ternary hydraulic motor (13) work, by adjusting the second variable hydraulic motor (11) and ternary
The discharge capacity of hydraulic motor (13) controls the first fan (10) and the rotation of the second fan (12)；Overflow valve (19) controls accumulator
(17) topping up and release pressure.
A kind of excavator the most according to claim 1 recovers energy and utilizes system, it is characterised in that described first automatically controlled side
It is switch valve to valve (5), for controlling startup and the stopping of the first variable hydraulic motor (3).
A kind of excavator the most according to claim 1 recovers energy and utilizes system, it is characterised in that described first variable liquid
Pressure motor (3) is integrated with the first volume adjustable hydraulic pump (2) by connecting or the parallel connection of power taking mouth, or transfer case form integrates.
A kind of excavator the most according to claim 1 recovers energy and utilizes system, it is characterised in that preset engine water
Temperature, hydraulic oil temperature, energy storage pressure and engine load rate operational target value, when engine water gentleness hydraulic oil temperature is higher than setting
Time in target zone, if accumulator stores energy and possesses release conditions, start accumulator control fan motor loop, close pump control wind
Fan motor loop, closes accumulator control and drives motor loop；When engine water gentleness hydraulic oil temperature is in the range of target setting,
If accumulator stores energy possesses release conditions, start accumulator control fan motor loop, close pump control fan motor loop, close
Close accumulator control and drive motor loop；When in the range of engine water gentleness hydraulic oil temperature is less than target setting, if accumulator storage
Deposit energy and possess release conditions, close pump control fan motor loop, close accumulator control fan motor loop, start accumulator control
Drive motor loop；If accumulator stores energy does not possess release conditions, close pump control fan motor loop, close accumulator control
Fan motor loop, closes accumulator control and drives motor loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620684280.7U CN205804461U (en) | 2016-06-30 | 2016-06-30 | Excavator recovers energy and utilizes system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620684280.7U CN205804461U (en) | 2016-06-30 | 2016-06-30 | Excavator recovers energy and utilizes system |
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| Publication Number | Publication Date |
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| CN205804461U true CN205804461U (en) | 2016-12-14 |
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| CN201620684280.7U Active CN205804461U (en) | 2016-06-30 | 2016-06-30 | Excavator recovers energy and utilizes system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013315A (en) * | 2016-06-30 | 2016-10-12 | 徐州徐工挖掘机械有限公司 | Recovered energy utilization system of excavator |
| CN107034943A (en) * | 2017-04-24 | 2017-08-11 | 江苏师范大学 | One kind is based on the recoverable single pump excavator energy saver of four-way hydraulic transformer liquid |
-
2016
- 2016-06-30 CN CN201620684280.7U patent/CN205804461U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013315A (en) * | 2016-06-30 | 2016-10-12 | 徐州徐工挖掘机械有限公司 | Recovered energy utilization system of excavator |
| CN106013315B (en) * | 2016-06-30 | 2018-02-13 | 徐州徐工挖掘机械有限公司 | A kind of excavator, which recovers energy, utilizes system |
| CN107034943A (en) * | 2017-04-24 | 2017-08-11 | 江苏师范大学 | One kind is based on the recoverable single pump excavator energy saver of four-way hydraulic transformer liquid |
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