CN205804460U - Excavator rotary kinetic energy reclaims and recharging oil device - Google Patents
Excavator rotary kinetic energy reclaims and recharging oil device Download PDFInfo
- Publication number
- CN205804460U CN205804460U CN201620623990.9U CN201620623990U CN205804460U CN 205804460 U CN205804460 U CN 205804460U CN 201620623990 U CN201620623990 U CN 201620623990U CN 205804460 U CN205804460 U CN 205804460U
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- kinetic energy
- overflow
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- 239000002828 fuel tank Substances 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 20
- 238000011084 recovery Methods 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 abstract description 9
- 230000001172 regenerating effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 210000004894 snout Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a kind of excavator rotary kinetic energy to reclaim and recharging oil device, it includes that pioneer pump, main pump, electromotor, pilot operated directional control valve, sequence valve, accumulator, switch valve, shuttle valve, two overflow valves, two check valves, rotary motor, repairing accumulator, two air relief valve, patterns switch valve and relief valve.By reclaiming high-voltage oil liquid during rotary motor braking, and change with low pressure fluid for system repairing, thus realize energy regenerating on the basis of not changing excavator braking characteristic.Pattern switching valve can realize excavator " commonly " and " kinetic energy recovery " both of which, and during " commonly " pattern, the operation principle of system is identical with existing excavator；During " kinetic energy recovery " pattern, kinetic energy reclaims the unlatching pressure of sequence valve and arranges equal with original system overflow valve, by improving the unlatching pressure of two overflow valves, while reclaiming motor rotary kinetic energy, in turn ensure that the braking ability of rotary motor is constant.System structure is simple, easy to control.
Description
Technical field
This utility model is that a kind of excavator rotary kinetic energy reclaims and recharging oil device, for hybrid excavator hydraulic pressure system
System, belongs to engineering machinery field.
Background technology
Hydraulic crawler excavator has quite varied application in field of engineering technology, but it has again the shortcomings such as high oil consumption simultaneously.
So the energy saving research of hydraulic system excavator is extremely urgent.
Excavator is when rotary motor is braked, and due to inertia force, rotary motor can't stop operating at once, it
Compression rotary motor oil-out fluid continuing revolution when, makes rotary motor oil-out produce instantaneous pressure, and from overflow
Valve overflow is fallen, and rotary motor is owing to continuing revolution, and owing to during braking, pilot operated directional control valve has been switched off, rotary motor oil-in needs
Wanting repairing, the high-voltage oil liquid that now overflow valve overflow is fallen can be by check valve to rotary motor repairing.This has existed for height
Force feed liquid is the rotary motor snout cavity repairing having only to low pressure fluid, there is waste.And the most basic work of excavator is exactly
90 ° of entruckings, now rotary motor need to frequently be braked, and can produce twice braking, work for a long time in the time of a cycle about 16s
Under, the high pressure that rotary motor braking overflow slatterns is considerable, if the high-voltage oil liquid produced when can reclaim braking, and pass through
Other oil circuit provides low pressure fluid for motor, certainly will can save excavator energy expenditure.
Existing patent has done useful exploration in terms of the energy regenerating of excavator, but there is also the most clearly disadvantageous.
During recovering energy at rotary motor, braking ability during rotary braking can be made to significantly reduce.Return at rotary motor kinetic energy
In the time receiving, high-voltage oil liquid enters accumulator through sequence valve, and the overflow valve setting pressure rotary motor to be less than both sides of sequence valve sets
Constant-pressure can realize energy regenerating.And sequence valve pressure arranges too low, then the fluid volume reclaimed is more, the angle of motor braking
Degree also can become big, affects the braking effect of motor.If but overflow valve is heightened, sequence valve pressure is also adjusted with original system one
Sample, although then braking effect is the same when reclaiming, but if switching back into original system, then causes shadow to original system braking effect
Ringing, serious situation is likely to result in rotary motor and damages.Existing patent could not solve " recovery of motor rotary kinetic energy " and " motor system
Dynamic effect declines " this is to contradiction.And owing to the fluid of overflow during braking is reclaimed, if the side repairing pressure that then motor does not reclaims
Power or repairing flow are the most just easy to cause rotary motor to be emptied.
Summary of the invention
The braking that when the purpose of this utility model is to be to solve tradition rotary motor braking, overflow energy produces when reclaiming
Moment is little compared with original system, the problem that braking angle is big.
For achieving the above object, the technical scheme that this utility model is used: a kind of excavator rotary kinetic energy reclaims and mends
Oil devices and methods therefor, including pioneer pump, main pump, electromotor, pilot operated directional control valve, sequence valve, accumulator, switch valve, shuttle valve, the
One overflow valve, the first check valve, rotary motor, the second check valve, the second overflow valve, repairing accumulator, the first air relief valve, second
Air relief valve, pattern switching valve and relief valve.
The oil-in of pioneer pump is connected with fuel tank, and the oil-out of pioneer pump is connected with pattern switching valve P mouth, pattern switching valve
A mouth oil-in with the first air relief valve and the second air relief valve respectively be connected, the oil-out of the first air relief valve overflows with first respectively
The control port of stream valve and the second overflow valve is connected；The oil-out of the second air relief valve is connected with repairing accumulator, repairing accumulator
Oil-in with the first check valve, the second check valve is connected respectively, pattern switching valve T mouth respectively with repairing accumulator, first
The oil-in of check valve and the second check valve is connected, and the T mouth of pattern switching valve is connected with fuel tank；
The oil-in of relief valve is connected with the oil-out of pioneer pump, and the oil-out of relief valve is connected with fuel tank；
Electromotor is connected with main pump, pioneer pump, and the oil-in of main pump is connected with fuel tank, the oil-out of main pump and liquid controlled reversing
The P mouth of valve is connected, and the T mouth of pilot operated directional control valve is connected with fuel tank；
The A mouth of pilot operated directional control valve respectively with an oil-in of shuttle valve, the oil-in of the first overflow valve, the first check valve
Oil-out is connected with the A mouth of rotary motor, the B mouth of pilot operated directional control valve respectively with another oil-in, second overflow valve of shuttle valve
Oil-in, the oil-out of the second check valve is connected with the B mouth of rotary motor；
The oil-out of shuttle valve is connected with the oil-in of switch valve, and the oil-out of switch valve is connected with the oil-in of sequence valve,
The oil-out of sequence valve is connected with accumulator.
Further, the first overflow valve and the second overflow valve are pilot operated compound relief valves.
Further, pattern switching valve is two-position four-way hand-operated direction valve or two-position four-way solenoid directional control valve.
Further, when pattern switching valve is operated in spring position, P mouth connects with A mouth, and T mouth is turned off with B mouth, and pattern is cut
Change valve be operated in current potential time, P mouth is turned off with A mouth, and T mouth connects with B mouth；
Further, pattern switching valve is identical with the Control Cooling of switch valve, is i.e. all hydraulic control or automatically controlled, and at both
In opening or simultaneously closing off simultaneously.
Compared with prior art, this utility model has the beneficial effect that
The energy recovery principle that prior art uses is the sequence valve little compared with original system overflow valve pressure by setting pressure
Reclaim fluid, set pressure the biggest, then braking effect is the best, but the recoverable fluid volume of institute is the least, is usually with 2MPa
Pressure reduction set the set pressure of sequence valve.But this mode is less owing to order sets pressure, and braking effect is poor, it is impossible to
Meet excavator real work requirement, even and if sequence valve setting pressure is equal with original system relief valve set pressure, part oil
Liquid is from overflow valve overflow, and recoverable fluid volume greatly reduces.This utility model is overflow by pioneer pump and air relief valve
Valve provides fluid control pressure, makes relief valve set pressure higher, and the pressure making sequence valve set sets with original system overflow valve
Pressure is equal so that during energy regenerating, braking characteristic is equal with original system, improves operating characteristic.
Control switch valve by controller, pattern switching valve can make excavator at " commonly " pattern and " kinetic energy recovery " mould
Switching between formula, in case " kinetic energy recovery " pattern element breaks down, excavator still normally can work with " commonly " pattern.
And be rotary motor repairing by pioneer pump and repairing accumulator while kinetic energy reclaims, it is to avoid rotary kinetic energy is returned. simultaneously
Time receiving be emptied problem.And while pattern switching valve cuts out, accumulator also can carry out off-load by pattern switching valve, in case
Accumulator long term storage fluid shortens accumulator service life.This utility model simple in construction, element is few, and control method is simple,
Dependable performance.
Accompanying drawing explanation
Fig. 1 is the theory diagram of this utility model control system.
In figure, 1 pioneer pump, 2 main pumps, 3 electromotors, 4 pilot operated directional control valves, 6 sequence valves, 7 accumulators, 5 switch valves, 8 shuttle valves,
9 first overflow valves, 10 first check valves, 11 rotary motors, 13 second check valves, 14 second overflow valves, 12 repairing accumulators, 15
First air relief valve, 16 second air relief valve, 17 pattern switching valves, 18 relief valve.
Detailed description of the invention
1 detailed description of the invention of the present utility model is illustrated below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of excavator rotary kinetic energy reclaims and recharging oil device and method thereof, including pioneer pump 1, main pump 2,
Electromotor 3, pilot operated directional control valve 4, sequence valve 6, accumulator 7, switch valve 5, shuttle valve the 8, first overflow valve the 9, first check valve 10, return
Turn motor the 11, second check valve the 13, second overflow valve 14, repairing accumulator the 12, first air relief valve the 15, second air relief valve 16, mould
Formula switching valve 17 and relief valve 18.
The oil-in of pioneer pump 1 is connected with fuel tank, and the oil-out of pioneer pump 1 is connected with pattern switching valve 17P mouth, and pattern is cut
Change the A mouth of valve 17 oil-in respectively with the first air relief valve 15 and the second air relief valve 16 to be connected, the oil-out of the first air relief valve 15
Control port with the first overflow valve 9 and the second overflow valve 14 is connected respectively；The oil-out of the second air relief valve 16 and repairing accumulation of energy
Device 12 is connected, and repairing accumulator 12 oil-in with first check valve the 10, second check valve 13 respectively is connected, and pattern switches valve 17
T mouth oil-in with repairing accumulator the 12, first check valve 10 and the second check valve 13 respectively be connected, pattern switching valve 17
T mouth is connected with fuel tank；
The oil-in of relief valve 18 is connected with the oil-out of pioneer pump 1, and the oil-out of relief valve 18 is connected with fuel tank；
Electromotor 3 is connected with main pump 2, pioneer pump 1, and the oil-in of main pump 2 is connected with fuel tank, the oil-out of main pump 2 and liquid
The P mouth of control reversal valve 4 is connected, and the T mouth of pilot operated directional control valve 4 is connected with fuel tank；
The A mouth of pilot operated directional control valve 4 respectively with shuttle valve 8 oil-in, the oil-in of the first overflow valve 9, first unidirectional
The oil-out of valve 10 is connected with the A mouth of rotary motor 11, the B mouth of pilot operated directional control valve 4 respectively with another oil-in of shuttle valve 8,
The oil-in of the second overflow valve 14, the oil-out of the second check valve 13 are connected with the B mouth of rotary motor 11；
The oil-out of shuttle valve 8 is connected with the oil-in of switch valve 5, the oil-in phase of the oil-out of switch valve 5 and sequence valve 6
Even, the oil-out 6 of sequence valve is connected with accumulator 7.
Further, the first overflow valve 9 and the second overflow valve 14 are pilot operated compound relief valves.
Further, pattern switching valve 17 is two-position four-way hand-operated direction valve or two-position four-way solenoid directional control valve.
Further, when pattern switching valve is operated in spring position, P mouth connects with A mouth, and T mouth is turned off with B mouth, and pattern is cut
Change valve be operated in current potential time, P mouth is turned off with A mouth, and T mouth connects with B mouth；
Further, pattern switching valve 17 is identical with the Control Cooling of switch valve 5, is i.e. all hydraulic control or automatically controlled, and two
Person is in and opens simultaneously or simultaneously close off.
The rotary kinetic energy of described device reclaims and repairing process is as follows:
When pattern switching valve 17 and switch valve 5 are in power failure state, it is now in " commonly " pattern, the first overflow valve 9 He
The pilot control chamber no pressure of the second overflow valve 14, the setting pressure of the first overflow valve 9 and the second overflow valve 14 is pre-according to spring
Clamp force regulates；By rotary motor 11 as a example by A mouth oil-feed, when rotary motor 11 is braked, due to inertia force, turn round horse
Reaching 11 can't stop operating, it is compression rotary motor 11 oil-out B mouth fluid continuing revolution when, makes revolution horse at once
Reach 11B mouth and produce instantaneous pressure, and from the second overflow valve 14 overflow, by the first check valve 10 to rotary motor 11A mouth repairing.
When pattern switching valve 17 and switch valve 5 obtain electric, being now in " kinetic energy recovery " pattern, now guide oil is through first
Air relief valve the 15, second air relief valve 16 is connected with the first overflow valve, the pilot port of the second overflow valve, repairing accumulator respectively.Due to
The effect of guide oil, now the setting pressure of first overflow valve the 9, second overflow valve 14 is according to initial tension of spring and the first air relief valve
15 pressure set are set up jointly, exceed Δ P than the setting pressure of first overflow valve the 9, second overflow valve 14 in " commonly " pattern,
Δ P is the pressure that the first air relief valve 15 is set up, the unlatching pressure of sequence valve 6 arrange with the first overflow valve 9 in " commonly " pattern, the
The setting pressure of two overflow valves 14 is equal.When rotary motor 11 is braked, the instantaneous pressure fluid of generation is lower from setting pressure
Sequence valve 6 through check valve to accumulator 7, thus realize reclaiming the high-pressure that when rotary motor 11 is braked, overflow slatterns.
In excavator rotary kinetic energy removal process, owing in motor jerk moment, high pressure chest fluid is recycled to accumulator
7, if low pressure chamber repairing in time or repairing flow can not arise that emptying phenomenon not.For avoiding emptying phenomenon to occur, at mould
When formula switching valve 17 switches to " kinetic energy recovery " pattern, pioneer pump 1 exports fluid through the second air relief valve 16 to repairing accumulator 12,
And through the first check valve 10 or the second check valve 13 be rotary motor 11 repairing.The effect of repairing accumulator 12 is to store repairing oil
Liquid, when braking due to rotary motor 11, needs the repairing fluid of the biggest flow, and the discharge capacity of pioneer pump 1 is less, and repairing fluid is not
Enough, so needing to increase repairing accumulator 12, when the motor non-brake time, storing enough fluid and braking at rotary motor 11
Time big flow repairing fluid is provided, it is ensured that emptying phenomenon will not occur.Meanwhile, for protecting accumulator, at pioneer pump and accumulator
Between the second air relief valve 16 is set, in order to avoid energy storage pressure is too high, the life-span is caused damage.And it is same that pattern switching valve cuts out
Time, accumulator also can carry out off-load by pattern switching valve, in case accumulator long term storage fluid shortens accumulator service life.
This utility model controls switch valve 5 by controller, pattern switching valve 17 can make excavator in " commonly " pattern
With " kinetic energy recovery " pattern, during " kinetic energy recovery " pattern, solve braking effect in traditional method excavator rotary kinetic energy removal process
The poorest problem.And pioneer pump 1 and repairing accumulator 12 be rotary motor repairing simultaneously, it is to avoid suction during rotary kinetic energy recovery
Empty problem.This utility model simple in construction, element is few, and control method is simple, dependable performance.
Claims (5)
1. excavator rotary kinetic energy reclaims and a recharging oil device, changes including pioneer pump (1), main pump (2), electromotor (3), hydraulic control
To valve (4), sequence valve (6), accumulator (7), switch valve (5), shuttle valve (8), the first overflow valve (9), the first check valve (10), return
Turn motor (11), the second check valve (13), the second overflow valve (14), repairing accumulator (12), the first air relief valve (15), second subtract
Pressure valve (16), pattern switching valve (17) and relief valve (18)；
The oil-in of pioneer pump (1) is connected with fuel tank, and the oil-out of pioneer pump (1) is connected with pattern switching valve (17) P mouth, pattern
The A mouth of switching valve (17) oil-in with the first air relief valve (15) and the second air relief valve (16) respectively is connected, the first air relief valve
(15) control port with the first overflow valve (9) and the second overflow valve (14) respectively of oil-out is connected；Second air relief valve (16)
Oil-out be connected with repairing accumulator (12), repairing accumulator (12) respectively with the first check valve (10), the second check valve
(13) oil-in be connected, pattern switching valve (17) T mouth respectively with repairing accumulator (12), the first check valve (10) and second
The oil-in of check valve (13) is connected, and the T mouth of pattern switching valve (17) is connected with fuel tank；
The oil-in of relief valve (18) is connected with the oil-out of pioneer pump (1), and the oil-out of relief valve (18) is connected with fuel tank；
Electromotor (3) is connected with main pump (2), pioneer pump (1), and the oil-in of main pump (2) is connected with fuel tank, main pump (2) fuel-displaced
Mouth is connected with the P mouth of pilot operated directional control valve (4), and the T mouth of pilot operated directional control valve (4) is connected with fuel tank；
The A mouth of pilot operated directional control valve (4) respectively with an oil-in of shuttle valve (8), the oil-in of the first overflow valve (9), first single
Be connected with the A mouth of rotary motor (11) to the oil-out of valve (10), the B mouth of pilot operated directional control valve (4) respectively with another of shuttle valve (8)
The B mouth phase of individual oil-in, the oil-in of the second overflow valve (14), the oil-out of the second check valve (13) and rotary motor (11)
Even；
The oil-out of shuttle valve (8) is connected with the oil-in of switch valve (5), the oil-out of switch valve (5) and the oil-feed of sequence valve (6)
Mouth is connected, and the oil-out of sequence valve (6) is connected with accumulator (7).
A kind of excavator rotary kinetic energy the most according to claim 1 reclaims and recharging oil device, it is characterised in that described the
One overflow valve (9) and the second overflow valve (14) are pilot operated compound relief valves.
A kind of excavator rotary kinetic energy the most according to claim 1 reclaims and recharging oil device, it is characterised in that described mould
Formula switching valve (17) is two-position four-way hand-operated direction valve or two-position four-way solenoid directional control valve.
A kind of excavator rotary kinetic energy the most according to claim 3 reclaims and recharging oil device, it is characterised in that described mould
When formula switching valve (17) is operated in spring position, P mouth connects with A mouth, and T mouth is turned off with B mouth, and pattern switching valve is operated in obtain current potential
Time, P mouth is turned off with A mouth, and T mouth connects with B mouth.
A kind of excavator rotary kinetic energy the most according to claim 1 reclaims and recharging oil device, it is characterised in that described mould
Formula switching valve (17) is identical with the Control Cooling of switch valve (5), is i.e. all hydraulic control or automatically controlled, and both be in open simultaneously or
Simultaneously close off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623990.9U CN205804460U (en) | 2016-06-20 | 2016-06-20 | Excavator rotary kinetic energy reclaims and recharging oil device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620623990.9U CN205804460U (en) | 2016-06-20 | 2016-06-20 | Excavator rotary kinetic energy reclaims and recharging oil device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205804460U true CN205804460U (en) | 2016-12-14 |
Family
ID=57506084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620623990.9U Withdrawn - After Issue CN205804460U (en) | 2016-06-20 | 2016-06-20 | Excavator rotary kinetic energy reclaims and recharging oil device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205804460U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951920A (en) * | 2016-06-20 | 2016-09-21 | 浙江大学 | Excavator rotation kinetic energy recycling and oil supplementing device and method |
| CN108799258A (en) * | 2018-07-05 | 2018-11-13 | 方碧水 | A kind of swing arm energy-recuperation system |
| CN112696393A (en) * | 2020-12-08 | 2021-04-23 | 广州润方环保科技股份有限公司 | Hydraulic system of crushing and screening mixing bucket |
| CN113464513A (en) * | 2021-07-21 | 2021-10-01 | 徐州徐工矿业机械有限公司 | Open type rotary oil supplementing system and oil supplementing method |
-
2016
- 2016-06-20 CN CN201620623990.9U patent/CN205804460U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951920A (en) * | 2016-06-20 | 2016-09-21 | 浙江大学 | Excavator rotation kinetic energy recycling and oil supplementing device and method |
| CN105951920B (en) * | 2016-06-20 | 2018-03-16 | 浙江大学 | A kind of excavator rotary kinetic energy recovery and recharging oil device and its method |
| CN108799258A (en) * | 2018-07-05 | 2018-11-13 | 方碧水 | A kind of swing arm energy-recuperation system |
| CN112696393A (en) * | 2020-12-08 | 2021-04-23 | 广州润方环保科技股份有限公司 | Hydraulic system of crushing and screening mixing bucket |
| CN112696393B (en) * | 2020-12-08 | 2022-05-10 | 广州润方环保科技股份有限公司 | Hydraulic system of crushing and screening mixing bucket |
| CN113464513A (en) * | 2021-07-21 | 2021-10-01 | 徐州徐工矿业机械有限公司 | Open type rotary oil supplementing system and oil supplementing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161214 Effective date of abandoning: 20180316 |
|
| AV01 | Patent right actively abandoned |