CN206986958U - A kind of excavator energy regenerating oil-supplementing system - Google Patents
A kind of excavator energy regenerating oil-supplementing system Download PDFInfo
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- CN206986958U CN206986958U CN201720618575.9U CN201720618575U CN206986958U CN 206986958 U CN206986958 U CN 206986958U CN 201720618575 U CN201720618575 U CN 201720618575U CN 206986958 U CN206986958 U CN 206986958U
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Abstract
The utility model discloses a kind of excavator energy regenerating oil-supplementing system, including the first reversal valve, second reversal valve, first check valve, main pump, fuel tank, shuttle valve, pilot valve, recovery valve, accumulator, the oil inlet of main pump is connected with fuel tank, main pump outlet is connected with the first check valve inlet all the way, main pump outlet another way is connected with the tunnel import of the second reversal valve the 3rd, guide's oil circuit is connected with first via import on the left of shuttle valve on the left of second reversal valve, guide's oil circuit is connected with first via import on the right side of shuttle valve on the right side of second reversal valve, second the first way outlet of reversal valve is connected with recovery valve C mouths, second the second way outlet of reversal valve is connected with recovery valve D mouths, recovery valve outlet is connected with accumulator.When the utility model rotary braking and progress energy regenerating, rotary motor repairing is using excavator when not working, and the minimum discharge repairing of main pump discharge, does not increase other energy sources, serves energy-saving effect.And increase element is less, simple system is reliable.
Description
Technical field
The present invention relates to excavator technical field, and in particular to a kind of excavator energy regenerating oil-supplementing system.
Background technology
With developing rapidly for social economy, energy shortage and problem of environmental pollution are on the rise, and each state will all reduce
Energy loss, environmental protection are brought into schedule.Meanwhile Energy Efficiency Ratio is one of key parameter of hydraulic crawler excavator market competition, therefore
The Study on energy saving of hydraulic crawler excavator and application are particularly necessary.
At present, the hydraulic hybrid power-saving technology based on excavator energy regenerating, mainly to excavator swing arm potential energy,
Rotary braking can be reclaimed, and the energy of recovery is stored by accumulator.Wherein rotation energy recovery mainly includes upper-part rotation
Braking and revolution start overflow two parts energy.Rotary braking and when not doing energy regenerating, the overflow fluid of rotary motor is through
Two overflow valves or the 3rd overflow valve and the second check valve or the 3rd check valve give rotary motor repairing, prevent motor is emptied from causing
Motor damages；When rotary braking and progress energy regenerating, the braking energy not overflow of rotary motor, and the recovery storage of recovered valve
In accumulator, so cause the benefit low on fuel of rotary motor and be emptied, influence the recovery of rotation energy, in addition, utilizing
Energy dissipation be present if doing the power source of rotary motor repairing in constant displacement pump.
The content of the invention
In order to overcome deficiency of the prior art, the invention provides a kind of excavator energy regenerating oil-supplementing system.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：
A kind of excavator energy regenerating oil-supplementing system, including the first reversal valve, the second reversal valve, the first check valve, main pump,
Fuel tank, shuttle valve, pilot valve, recovery valve, accumulator, the second reversal valve be provided with three tunnel imports, three way outlets, left side guide's oil circuit and
Right side guide's oil circuit, the oil inlet of main pump are connected with fuel tank, and main pump outlet is connected with the first check valve inlet all the way, main pump outlet
Another way is connected with the tunnel import of the second reversal valve the 3rd, guide's oil circuit and first via import phase on the left of shuttle valve on the left of the second reversal valve
Even, guide's oil circuit is connected with first via import on the right side of shuttle valve on the right side of the second reversal valve, second the first way outlet of reversal valve and recovery
Valve C mouths are connected, and second the second way outlet of reversal valve is connected with recovery valve D mouths, and recovery valve outlet is connected with accumulator, recovery valve C
Mouth is connected with rotary motor A mouths, and recovery valve D mouths are connected with rotary motor B mouths, the first one-way valved outlet and the second reversal valve second
Road import is connected, and fuel tank is connected with the second reversal valve first via import, and the way outlet of the second reversal valve the 3rd enters with the first reversal valve
Mouth is connected, and the first diverter valve outlet is connected with pressure-reducing valve import, and decompression valve outlet is connected with rotary motor T mouths, the first reversal valve
Right side guide's oil circuit is connected with side outlet on shuttle valve, and the way outlet of pilot valve first is connected with the second tunnel import on the left of shuttle valve, guide
The way outlet of valve second is connected with the second tunnel import on the right side of shuttle valve.
Preferably, also including adjuster, adjuster import is connected with main pump, adjuster outlet and the second reversal valve the 3rd
Way outlet is connected, and adjuster outlet is also connected with fuel tank.
Preferably, also include the first overflow valve and choke valve, the import of the choke valve first via and the tunnel of the second reversal valve the 3rd
Outlet is connected, and choke valve the second tunnel import is connected with adjuster, and throttling valve outlet is connected with fuel tank, the first overflow valve import and the
The way outlet of two reversal valve the 3rd is connected, and the first overflow valve outlet is connected with fuel tank.
Preferably, the rotary motor also includes the second check valve, the 3rd check valve, the second overflow valve, the 3rd overflow
Valve, the second overflow valve and the second check valve are connected with rotary motor A mouths, and the 3rd check valve and the 3rd overflow valve are with turning round horse
Be connected up to B mouths, and the second check valve 31, the 3rd check valve 32, the second overflow valve 33 and the 3rd overflow valve 34 with rotary motor T
Mouth is connected.
Preferably, the pilot valve controls the second reversal valve.
Preferably, the pilot valve control shuttle valve, the shuttle valve control the first reversal valve.
The operation principle of above-mentioned excavator energy regenerating oil-supplementing system is as follows：Start pilot valve, pilot valve sends guide
Signal controls the commutation of the second reversal valve, after the commutation of the second reversal valve, the oil communication of main pump to rotary motor, while pilot valve institute
Sending control signal and the first reversal valve is delivered to by the control of shuttle valve, the first reversal valve commutates upon receipt of the signals, and first
After reversal valve commutation, cut-out main pump arrives the oil circuit of rotary motor T mouths, main pump discharge pressure oil, by the first check valve into the
Two reversal valves give revolution motor oil mouth A or B fluid, and rotary motor opposite side hydraulic fluid port fluid returns through the second reversal valve oil return, motor
Turn the rotation of drive excavator；During braking, after pilot valve is closed, the commutation of the second reversal valve, main pump to the oil circuit between rotary motor
It is cut off, revolution starts to brake, because excavator inertia of getting on the bus is rotated further, the rotary motor hydraulic fluid port side fluid of previous oil-feed
It is pressurized by high voltage variable low pressure, and opposite side fluid becomes high pressure by low pressure, when carrying out energy regenerating, rotary motor hydraulic fluid port high-pressure side
The recovered valve oil mouth C and D of fluid be accumulator topping up without overflow, main pump discharge pressure oil passes through the second reversal valve, then passes through
After first reversal valve, the T mouths that rotary motor is flowed into after being depressurized by pressure-reducing valve carry out repairing, avoid being emptied.When rotary braking not
When carrying out energy regenerating, rotary motor hydraulic fluid port high-pressure side fluid is through the 3rd overflow valve and the second check valve or through the second overflow valve
Prevent from being emptied to rotary motor low-pressure side repairing with the 3rd check valve.
In rotary motor revolution and rotary braking by main pump to rotary motor repairing when, the first overflow valve and choke valve
Collective effect is established pressure signal and acted on adjuster, the hydraulic pressure oil stream discharged by the change control main pump of adjuster
Amount.When rotary braking and progress energy regenerating, excavator main pump minimum discharge is used as rotary motor repairing.
The beneficial effects of the invention are as follows：
The present invention proposes a kind of new excavator energy regenerating oil-supplementing system.The system is mainly by reversal valve, pressure-reducing valve, shuttle
Valve is formed.When rotary braking and progress energy regenerating, the first reversal valve works in left position under spring force, main pump row
Go out pressure oil after pressure-reducing valve depressurizes, then the repairing mouth T oil-feed rotary motors by rotary motor, reach and rotary motor is mended
The function of oil.Rotary motor repairing is using excavator when not working, and the minimum discharge repairing of main pump discharge, is not increased other
Energy source, serve energy-saving effect.And increase element is less, simple system is reliable.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Reference numerals list：
1-. recovery valves, 2- accumulators, 3- rotary motors, 4- pressure-reducing valves, the reversal valves of 5- first, the first overflow valves of 6- 7- sections
Flow valve, 8- shuttle valves, 9- adjusters, 10- fuel tanks, 11- main pumps, the check valves of 12- first, the reversal valves of 13- second, 14- pilot valves,
The check valves of 31- second, the check valves of 32- the 3rd, the overflow valves of 33- second, the overflow valves of 34- the 3rd.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description：
As Fig. 1, a kind of excavator energy regenerating oil-supplementing system, including the first reversal valve 5, the second reversal valve 6, first are unidirectional
Valve 12, main pump 11, fuel tank 10, shuttle valve 8, pilot valve 14, recovery valve 1, accumulator 2, the first overflow valve 6, adjuster 9, choke valve
7th, the second check valve 31, the 3rd check valve 32, the second overflow valve 33, the 3rd overflow valve 34, the second reversal valve be provided with three tunnel imports,
Three way outlets, left side guide's oil circuit and right side guide's oil circuit, the oil inlet of main pump 11 are connected with fuel tank 10, and main pump 11 exports all the way
It is connected with the import of check valve 12, main pump 11 exports another way and is connected with the tunnel import of the second reversal valve 13 the 3rd, the second reversal valve 13
Left side guide's oil circuit is connected with the left side first via import of shuttle valve 8, the right side guide's oil circuit of the second reversal valve 13 and the right side of shuttle valve 8 first
Road import is connected, and the way outlet of the second reversal valve 13 first is connected with recovery valve 1C mouths, and the way outlet of the second reversal valve 13 second is with returning
Receive valve 1D mouths to be connected, the outlet of recovery valve 1 is connected with accumulator 2, and recovery valve 1C mouths are connected with rotary motor 3A mouths, recovery valve 1B mouths
It is connected with rotary motor 3B mouths, the outlet of check valve 12 is connected with the tunnel import of the second reversal valve 13 second, and fuel tank 10 and second commutates
The first via import of valve 13 is connected, and the way outlet of the second reversal valve 13 the 3rd is connected with the first via import of choke valve 7, choke valve 7 second
Road import is connected with adjuster 9, and adjuster 9 is connected with main pump 11, and the outlet of choke valve 7 is connected with fuel tank 10, the second reversal valve 13
3rd way outlet is connected with the import of the first overflow valve 6, and the outlet of the first overflow valve 6 is connected with fuel tank 10, the second reversal valve 13 the 3rd
Way outlet is connected with the import of the first reversal valve 5, and the outlet of the first reversal valve 5 is connected with the import of pressure-reducing valve 4, and the outlet of pressure-reducing valve 4 is with returning
Turn motor 3T mouths to be connected, guide's oil circuit is connected with side outlet on shuttle valve 8 on the right side of the first reversal valve, the way outlet of pilot valve 14 first and
The the second tunnel import of left side of shuttle valve 8 is connected, and the way outlet of pilot valve 14 second is connected with the second tunnel import of right side of shuttle valve 8.Second is unidirectional
The overflow valve 33 of valve 31 and second is connected with rotary motor 3A mouths, and the 3rd check valve 32 and the 3rd overflow valve 34 are and rotary motor
B mouths are connected, and the second check valve 31, the 3rd check valve 32, the second overflow valve 33 and the 3rd overflow valve 34 with rotary motor T mouths
It is connected.
Method using above-mentioned excavator energy regenerating recharging oil device is as follows：It is first by taking the right-hand rotation of A mouth oil-feeds rotary motor as an example
First starting pilot valve 14, pilot valve 14 sends pilot signal and controls the second reversal valve 13 to commutate, after reversal valve 13 commutates, main pump
11 arrive the oil communication of rotary motor 3, while pilot valve 14 sends control signal and is delivered to first by the control of shuttle valve 8 and changes
To valve 5, the first reversal valve 5 commutates upon receipt of the signals, after the commutation of the first reversal valve 5, on cut-out main pump 11 to rotary motor 3
T mouth oil circuits, the first overflow valve 6 are established pressure signal with the collective effect of choke valve 7 and acted on adjuster 9, pass through adjuster 9
Change the hydraulic fluid flow rate that control main pump 11 is discharged, the discharge pressure of main pump 11 oil, changed by the first check valve 12 into second
The hydraulic fluid port A fluid of rotary motor 3 is supplied to valve 13, the hydraulic fluid port B fluid of rotary motor 3 is through the oil return of the second reversal valve 13, motor rotating belt
Dynamic excavator rotates；After pilot valve 14 is closed, the second reversal valve 13 is commutated, and main pump 11 is cut to the oil circuit between rotary motor 3
Disconnected, revolution starts to brake, and because excavator inertia of getting on the bus is rotated further, the hydraulic fluid port B sides fluid of rotary motor 3 is pressurized to be uprised by low pressure
Pressure, and hydraulic fluid port A side fluid is by high voltage variable low pressure, when carrying out energy regenerating, the hydraulic fluid port B sides high-voltage oil liquid of rotary motor 3 is recovered
Valve 1 hydraulic fluid port C and D be accumulator topping up without overflow, the discharge pressure of main pump 11 oil passes through the second reversal valve 13, then is changed by first
To after valve 5, the T mouths that rotary motor 3 is flowed into after being depressurized by pressure-reducing valve 4 carry out repairing, avoid being emptied.The repairing of rotary motor 3 is
Using excavator when not working, the minimum discharge repairing of the discharge of main pump 11, do not increase other energy sources, serve energy-conservation effect
Fruit.And increase element is less, simple system is reliable.If energy regenerating need not be carried out, accumulator 2 is closed, is closed after braking
All oil circuits of second reversal valve 12, now, the hydraulic fluid port B side high-voltage oil liquids of rotary motor 3 are through the 3rd overflow valve 34, the second check valve
31 prevent from being emptied to the low-pressure side repairing of rotary motor 3.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, in addition to
Formed technical scheme is combined by above technical characteristic.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (6)
1. a kind of excavator energy regenerating oil-supplementing system, it is characterised in that including the first reversal valve, the second reversal valve, the first list
Three tunnel imports, three way outlets, left side are provided with to valve, main pump, fuel tank, shuttle valve, pilot valve, recovery valve, accumulator, the second reversal valve
Guide's oil circuit and right side guide's oil circuit, the oil inlet of main pump are connected with fuel tank, main pump outlet all the way with the first check valve inlet phase
Even, main pump outlet another way is connected with the tunnel import of the second reversal valve the 3rd, guide's oil circuit and shuttle valve left side on the left of the second reversal valve
First via import is connected, and guide's oil circuit is connected with first via import on the right side of shuttle valve on the right side of the second reversal valve, the second reversal valve first
Way outlet is connected with recovery valve C mouths, and second the second way outlet of reversal valve is connected with recovery valve D mouths, reclaims valve outlet and accumulator
It is connected, recovery valve C mouths are connected with rotary motor A mouths, and recovery valve D mouths are connected with rotary motor B mouths, the first one-way valved outlet and the
Two reversal valve the second tunnel imports are connected, and fuel tank is connected with the second reversal valve first via import, the way outlet of the second reversal valve the 3rd with
First reversal valve import is connected, and the first diverter valve outlet is connected with pressure-reducing valve import, depressurizes valve outlet and rotary motor T mouth phases
Even, guide's oil circuit is connected with side outlet on shuttle valve on the right side of the first reversal valve, the way outlet of pilot valve first and the second tunnel on the left of shuttle valve
Import is connected, and the way outlet of pilot valve second is connected with the second tunnel import on the right side of shuttle valve.
2. excavator energy regenerating oil-supplementing system as claimed in claim 1, it is characterised in that also including adjuster, adjuster
Import is connected with main pump, and adjuster outlet is connected with the way outlet of the second reversal valve the 3rd, and adjuster outlet is also connected with fuel tank.
3. excavator energy regenerating oil-supplementing system as claimed in claim 2, it is characterised in that also including the first overflow valve and section
Valve is flowed, the import of the choke valve first via is connected with the way outlet of the second reversal valve the 3rd, and choke valve the second tunnel import is connected with adjuster,
Throttling valve outlet is connected with fuel tank, and the first overflow valve import is connected with the way outlet of the second reversal valve the 3rd, the first overflow valve outlet
It is connected with fuel tank.
4. excavator energy regenerating oil-supplementing system as claimed in claim 1, it is characterised in that the rotary motor also includes the
Two check valves, the 3rd check valve, the second overflow valve, the 3rd overflow valve, the second overflow valve and the second check valve with rotary motor A
Mouthful be connected, the 3rd check valve and the 3rd overflow valve are connected with rotary motor B mouths, and the second check valve 31, the 3rd check valve 32,
Second overflow valve 33 and the 3rd overflow valve 34 are connected with rotary motor T mouths.
5. excavator energy regenerating oil-supplementing system as claimed in claim 1, it is characterised in that the pilot valve control second is changed
To valve.
6. excavator energy regenerating oil-supplementing system as claimed in claim 1, it is characterised in that the pilot valve controls shuttle valve,
The shuttle valve controls the first reversal valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720618575.9U CN206986958U (en) | 2017-05-31 | 2017-05-31 | A kind of excavator energy regenerating oil-supplementing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720618575.9U CN206986958U (en) | 2017-05-31 | 2017-05-31 | A kind of excavator energy regenerating oil-supplementing system |
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| CN206986958U true CN206986958U (en) | 2018-02-09 |
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| CN201720618575.9U Active CN206986958U (en) | 2017-05-31 | 2017-05-31 | A kind of excavator energy regenerating oil-supplementing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988374A (en) * | 2017-05-31 | 2017-07-28 | 徐州徐工挖掘机械有限公司 | A kind of excavator energy regenerating oil-supplementing system and its method |
| CN112127416A (en) * | 2020-10-10 | 2020-12-25 | 徐州徐工矿业机械有限公司 | Novel walking motor unblock and high-low speed control hydraulic system |
-
2017
- 2017-05-31 CN CN201720618575.9U patent/CN206986958U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988374A (en) * | 2017-05-31 | 2017-07-28 | 徐州徐工挖掘机械有限公司 | A kind of excavator energy regenerating oil-supplementing system and its method |
| CN112127416A (en) * | 2020-10-10 | 2020-12-25 | 徐州徐工矿业机械有限公司 | Novel walking motor unblock and high-low speed control hydraulic system |
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