CN206015778U - Excavator rotation energy recovery system - Google Patents
Excavator rotation energy recovery system Download PDFInfo
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- CN206015778U CN206015778U CN201621025185.2U CN201621025185U CN206015778U CN 206015778 U CN206015778 U CN 206015778U CN 201621025185 U CN201621025185 U CN 201621025185U CN 206015778 U CN206015778 U CN 206015778U
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- valve
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- fluid port
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- pressure
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Abstract
The utility model discloses a kind of excavator rotation energy recovery system, mainly it is made up of recovery loop and feed circuit, including hydraulic pump, the first accumulator, the second accumulator, the recovery valve group for energy regenerating, rotary motor assembly, the first overflow valve, the second overflow valve and main control valve, the recovery loop that valve group, the second accumulator and the second overflow valve constitute system is reclaimed；Hydraulic pump, overflow valve, the first check valve, the second check valve and the first accumulator constitute the feed circuit of system.The utility model not only can achieve the recovery of rotation energy, also cut down the impact of revolution acceleration and deceleration, it is to avoid the generation of motor emptying phenomenon, it is ensured that the normal recovery of rotation energy.
Description
Technical field
The utility model is related to a kind of excavator rotation energy recovery system, it is adaptable to which hydraulic hybrid excavator is got on the bus
Rotary braking and can turn round the recovery for starting overflow energy, belong to excavator technical field of energy recovery.
Background technology
With developing rapidly for social economy, energy shortage and problem of environmental pollution are on the rise, and each state all will 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, national 13 science and technology supporting projects have been listed in hydraulic hybrid technology research in, based on excavator energy
The hydraulic hybrid Study on energy saving of recovery and application, mainly can be carried out back to excavator swing arm potential energy, rotary braking
Receive, the energy of recovery is stored by accumulator.Wherein rotation energy is reclaimed and is overflow
, although the recovery of rotation energy can be realized using conventional hydraulic sequence valve, there is revolution acceleration and deceleration punching in stream two parts energy
The problem that hitting property is big and motor is emptied, the recovery of impact rotation energy.
Content of the invention
For the problem that above-mentioned prior art is present, the utility model provides a kind of excavator rotation energy recovery system,
The recovery of rotation energy is not only can achieve, can also cut down the impact of revolution acceleration and deceleration, it is to avoid the generation of motor emptying phenomenon, really
Protect the normal recovery of rotation energy.
To achieve these goals, the utility model adopt a kind of excavator rotation energy recovery system, mainly by return
Withdraw road and feed circuit to constitute, including hydraulic pump, the first accumulator, the second accumulator, the recovery valve group for energy regenerating,
Rotary motor assembly, the first overflow valve, the second overflow valve and main control valve, the oil-in of hydraulic pump are connected with fuel tank, oil-out
It is connected with the oil-in of the first check valve, bypass is connected with overflow valve；The oil-out of the first check valve is connected with the first accumulator；
The oil-out of the first accumulator is connected with the oil-in of the second check valve；The oil-out of the second check valve and rotary motor assembly
Hydraulic fluid port C connects；The hydraulic fluid port A of rotary motor assembly is connected with the hydraulic fluid port A of the hydraulic fluid port A of main control valve, recovery valve group, rotary motor assembly
Hydraulic fluid port B, the hydraulic fluid port B for reclaiming valve group of hydraulic fluid port B and main control valve be connected；The hydraulic fluid port C of valve group is reclaimed through the 3rd check valve and second
Accumulator connects, and the oil-out of the second accumulator is connected with the oil-in of the second overflow valve；The oil return opening of recovery valve group, second are overflow
The oil-out of stream valve is connected with fuel tank；Reclaim the recovery loop that valve group, the second accumulator and the second overflow valve constitute system；Hydraulic pressure
Pump, overflow valve, the first check valve, the second check valve and the first accumulator constitute the feed circuit of system.
Preferably, the recovery valve group includes structure identical first pressure valve and second pressure valve, first pressure valve
Oil-in is the hydraulic fluid port B for reclaiming valve group, and the oil-in of second pressure valve is the hydraulic fluid port A for reclaiming valve group；First pressure valve fuel-displaced
Mouth is connected with the oil-out of second pressure valve, and the hydraulic fluid port C as recovery valve group；Second pressure valve includes sequence valve and order
Valve pilot poppet valve be connected second spring and pressure-control valve be connected with sequence valve, sequence valve into and out of hydraulic fluid port be second
Pressure valve into and out of hydraulic fluid port.
Preferably, the pressure-control valve includes liquid resistance, control chamber, piston, spring cavity and the first spring, and sequence valve enters
The oil-in that hydraulic fluid port is hindered with liquid is connected, and the oil-out of liquid resistance is connected with control chamber；Piston between control chamber and spring cavity,
One spring is located in spring cavity；Spring cavity is connected with the drain tap of sequence valve, and takes back fuel tank；Numerical value and control is hindered by adjusting liquid
The size of chamber volume processed and the setting value of the first spring, can adjust first stage rotation pressure and pressure setup time.
Preferably, the first pressure valve and second pressure valve are integrated；Pressure-control valve is integrated in sequence valve
Together, pressure-control valve is integration member.
Preferably, the rotary motor assembly includes rotary motor, the 4th check valve and the 5th check valve, rotary motor
Hydraulic fluid port A, hydraulic fluid port B hydraulic fluid port A, hydraulic fluid port B for rotary motor assembly；The oil-in of the oil-in and the 5th check valve of the 4th check valve
Connect, and the hydraulic fluid port C as rotary motor assembly is connected with the oil-out of the second check valve；Fourth, fifth check valve, oil-out
Hydraulic fluid port A with rotary motor, hydraulic fluid port B is corresponding connects.
Preferably, the hydraulic pump is used for supplying the first accumulator and rushes liquid, and the discharge capacity of hydraulic pump met under various operating modes
Fluid amount needed for rotary motor assembly repairing.
Compared with prior art, the utility model is mainly made up of recovery loop and feed circuit, not only achieves revolution
The collection of energy；And, when reclaiming rotation energy, reduced by reclaiming the multistage pressure control function for reclaiming valve group in loop
Revolution acceleration and deceleration impact；Meanwhile, using hydraulic pump in feed circuit to the first accumulator topping up, the first accumulator is directly revolution
Motor assembly carries out repairing, it is ensured that the reliability of rotary motor repairing, it is therefore prevented that motor is emptied damage.Wherein, first stores
The topping up of energy device is supplied by independent hydraulic pump, does not affect excavator overall performance.Generally speaking, startup/braking energy is turned round
When being reclaimed by reclaiming valve group, reclaim valve group and there is two-stage Stress control, the impact of revolution acceleration and deceleration can be cut down, realized back
Turn smoothly to start/system；Simultaneously by feed circuit to rotary motor repairing, it is to avoid the generation of motor emptying phenomenon, horse is made
Up to reliable operating；The normal recovery of rotation energy is finally achieved.
Description of the drawings
Fig. 1 is hydraulic schematic diagram of the present utility model.
In figure：1st, fuel tank, 2, hydraulic pump, the 3, first overflow valve, the 4, first check valve, the 5, second check valve, 6, first stores
Can device, the 7, second accumulator, the 8, the 3rd check valve, 9, reclaim valve group, 91, first pressure valve, 92, second pressure valve, 921, liquid
Resistance, 922, control chamber, 923, piston, 924, spring cavity, the 925, first spring, 926, second spring, 927, sequence valve, 10, return
Turn motor assembly, 101, rotary motor, the 102, the 4th check valve, the 103, the 5th check valve, the 11, second overflow valve, 12, master control
Valve.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of excavator rotation energy recovery system, is mainly made up of recovery loop and feed circuit, wrap
Include hydraulic pump 2, the first accumulator 6, the second accumulator 7, the recovery valve group 9 for energy regenerating, rotary motor assembly 10, first
Overflow valve 3, the second overflow valve 11 and main control valve 12, the oil-in of hydraulic pump 2 are connected with fuel tank 1, and oil-out is unidirectional with first
The oil-in connection of valve 4, bypass are connected with overflow valve 3；The oil-out of the first check valve 4 is connected with the first accumulator 6；First stores
The oil-out of energy device 6 is connected with the oil-in of the second check valve 5；The oil-out of the second check valve 5 and rotary motor assembly 10
Hydraulic fluid port C connects；The hydraulic fluid port A of rotary motor assembly 10 is connected with the hydraulic fluid port A of the hydraulic fluid port A of main control valve 12, recovery valve group 9, turns round horse
Hydraulic fluid port B up to assembly 10 is connected with the hydraulic fluid port B of main control valve 12, the hydraulic fluid port B of recovery valve group 9；The hydraulic fluid port C of valve group 9 is reclaimed through the 3rd
Check valve 8 is connected with the second accumulator 7, and the oil-out of the second accumulator 7 is connected with the oil-in of the second overflow valve 11；Recovery valve
The oil return opening of group 9, the oil-out of the second overflow valve 11 are connected with fuel tank 1；Reclaim valve group 9, the second accumulator 7 and the second overflow valve
The 11 recovery loops for constituting system；Hydraulic pump 2, overflow valve 3, the first check valve 4, the second check valve 5 and the first accumulator 6 are constituted
The feed circuit of system.When reclaiming rotation energy, reduced by reclaiming the multistage pressure control function for reclaiming valve group 9 in loop
Revolution acceleration and deceleration impact, it is achieved that the collection of rotation energy；Meanwhile, filled using 2 pairs of the first accumulators 6 of hydraulic pump in feed circuit
Liquid, the first accumulator 6 directly carry out repairing for rotary motor assembly 10, it is ensured that the reliability of rotary motor repairing.Wherein,
The topping up of one accumulator 6 is supplied by independent hydraulic pump 2, does not affect excavator overall performance.
Preferably, the recovery valve group 9 includes structure identical first pressure valve 91 and second pressure valve 92, first pressure
The oil-in of valve 91 is the hydraulic fluid port B for reclaiming valve group 9, and the oil-in of second pressure valve 92 is the hydraulic fluid port A for reclaiming valve group 9；First pressure
The oil-out of power valve 91 is connected with the oil-out of second pressure valve 92, and the hydraulic fluid port C as recovery valve group 9；Second pressure valve 92
The pressure control being connected including sequence valve 927, the second spring 926 being connected with 927 pilot poppet valve of sequence valve and with sequence valve 927
Valve processed, sequence valve 927 into and out of hydraulic fluid port be second pressure valve 92 into and out of hydraulic fluid port.First pressure valve 91 and second pressure valve 92
Structure, principle identical, repeat no more here.
Pressure-control valve is that first pressure valve 91 and second pressure valve 92 increase on the basis of conventional successive valve function
Stage pressure is controlled, it is preferable that may include liquid resistance 921, control chamber 922, piston 923, spring cavity 924 and the first spring 925, sequentially
The oil-in of valve 927 is connected with the oil-in of liquid resistance 921, and the oil-out of liquid resistance 921 is connected with control chamber 922；Piston 923 between
Between control chamber 922 and spring cavity 924, the first spring 925 is located in spring cavity 924；Spring cavity 924 is let out with sequence valve 927
Hydraulic fluid port is connected, and takes back fuel tank 1；Size and first spring 925 of 922 volume of 921 numerical value and control chamber is hindered by adjusting liquid
Setting value, first stage rotation pressure and pressure setup time can be adjusted.
Preferably, the first pressure valve 91 and second pressure valve 92 are integrated；Pressure-control valve and sequence valve 927
Integrate, pressure-control valve is integration member.Certainly, first pressure valve 91 and second pressure valve 92 independently installed can also make
With pressure-control valve independently installed can also be used with sequence valve 927, specifically voluntarily can be selected as needed.Integrated make structure
Simpler, reliability, low cost.
Preferably, the rotary motor assembly 10 includes rotary motor 101, the 4th check valve 102 and the 5th check valve
103, the hydraulic fluid port A of rotary motor 101, hydraulic fluid port B hydraulic fluid port A, hydraulic fluid port B for rotary motor assembly 10；The oil-feed of the 4th check valve 102
Mouth is connected with the oil-in of the 5th check valve 103, and the hydraulic fluid port C as rotary motor assembly 10 is fuel-displaced with the second check valve 5
Mouth connection；The oil-out of fourth, fifth check valve 102,103 and the hydraulic fluid port A of rotary motor 101, hydraulic fluid port B is corresponding connects.Revolution horse
The not integrated overflow valve up to inside the hydraulic fluid port A and hydraulic fluid port B side motor of assembly 10, its Stress control fully rely on 91 He of first pressure valve
Second pressure valve 92.
Preferably, the hydraulic pump 2 is used for supplying the first accumulator 6 and rushes liquid, and the discharge capacity of hydraulic pump 2 meets various operating modes
Fluid amount needed for lower revolution 10 repairing of motor assembly.Select the discharge capacity of suitable hydraulic pump 2 meet returning under various operating modes
Fluid amount needed for turning motor 10A repairings, makes that system is more stable, reliable work.
The course of work (refers to Fig. 1)：
During upper-part rotation, the B mouths output hydraulic oil of main control valve 12 passes through the hydraulic fluid port B oil-feeds of rotary motor 101,101 oil
Mouth A oil returns flow back to fuel tank by the A mouths of main control valve 12, drive rotary motor rotation.When revolution starts or brakes, main control valve 12
A mouths and the cut-off of B mouths, as inertia of getting on the bus makes the hydraulic fluid port A sides fluid of rotary motor 101 pressurized, be converted into high pressure, and hydraulic fluid port B
Side fluid is by high voltage variable low pressure.At this moment, the hydraulic fluid port A sides hydraulic oil of rotary motor 101 flows into the A mouths of recovery valve group 9, first passes through liquid
Resistance 921 flows into control chamber 922 makes piston 923 overcome the power of the first spring 925 to move to right, and sets up first stage rotation pressure.Work as work
When plug 923 moves to spacing terminal, when pressure continues to rise the setting pressure for reaching second spring 926, the main valve of sequence valve 927
Core is opened, and sets up second segment rotation pressure, the high-voltage oil liquid of entrance is flowed out and is flowed into the second accumulator 7 through the 3rd check valve 8.
When 7 pressure of the second accumulator reaches the setting pressure of the second overflow valve 11 from 11 overflow of the second overflow valve to fuel tank 1, so as to disappear
The impact of rotary braking is subtracted.Simultaneously as inertia of getting on the bus, rotary motor will continue to rotate along original direction when braking, and lead
Hydraulic fluid port A, B of control valve 12 now ends, so the B mouth fluid of rotary motor 101 lacks, if not repairing, can cause back
Turn motor and be emptied damage.And here, when the B mouths oil liquid pressure of rotary motor 101 is less than setting value, the first accumulator 6 is just defeated
Go out fluid, the 4th check valve 102 of rotary motor is flowed through to rotary motor through the C mouths of the second check valve 5 and rotary motor 101
Hydraulic fluid port B side repairings, to prevent motor to be emptied damage, here, the oil pressure in the first accumulator 6 is come topping up by hydraulic pump 2.When
During reversed turning, energy regenerating is realized by first pressure valve 91, and repairing is realized yet by the first accumulator 6, its principle with upper
State identical, repeat no more.
From said structure, the utility model is mainly to be made up of recovery loop and feed circuit, not only achieves back
Turn the collection of energy；And, when reclaiming rotation energy, cut down by reclaiming the multistage pressure control function for reclaiming valve group in loop
Revolution acceleration and deceleration impact；Meanwhile, using hydraulic pump in feed circuit to the first accumulator topping up, the first accumulator is directly back
Turning motor assembly carries out repairing, it is ensured that the reliability of rotary motor repairing, it is therefore prevented that motor is emptied damage.Wherein, first
The topping up of accumulator is supplied by independent hydraulic pump, does not affect excavator overall performance.Generally speaking, startup/Brake Energy is turned round
When amount is reclaimed by reclaiming valve group, reclaim valve group and there is two-stage Stress control, the impact of revolution acceleration and deceleration can be cut down, realize
Revolution smoothly starts/system；Simultaneously by feed circuit to rotary motor repairing, it is to avoid the generation of motor emptying phenomenon, make
Motor reliably operates；The normal recovery of rotation energy is finally achieved.
Claims (6)
1. a kind of excavator rotation energy recovery system, it is characterised in that main by reclaiming loop and feed circuit is constituted, including
Hydraulic pump (2), the first accumulator (6), the second accumulator (7), the recovery valve group (9) for energy regenerating, rotary motor assembly
(10), the first overflow valve (3), the second overflow valve (11) and main control valve (12),
The oil-in of hydraulic pump (2) is connected with fuel tank (1), and oil-out is connected with the oil-in of the first check valve (4), is bypassed and is overflow
Stream valve (3) connection；The oil-out of the first check valve (4) is connected with the first accumulator (6)；The oil-out of the first accumulator (6) with
The oil-in connection of the second check valve (5)；The oil-out of the second check valve (5) is connected with the hydraulic fluid port C of rotary motor assembly (10)；
The hydraulic fluid port A of rotary motor assembly (10) is connected with the hydraulic fluid port A of main control valve (12), the hydraulic fluid port A of recovery valve group (9), and rotary motor is total
Hydraulic fluid port B into (10) is connected with the hydraulic fluid port B of main control valve (12), the hydraulic fluid port B of recovery valve group (9)；
Reclaim valve group (9) hydraulic fluid port C be connected with the second accumulator (7) through the 3rd check valve (8), the second accumulator (7) fuel-displaced
Mouth is connected with the oil-in of the second overflow valve (11)；Reclaim oil return opening, the oil-out of the second overflow valve (11) and the oil of valve group (9)
Case (1) connects；
Reclaim the recovery loop that valve group (9), the second accumulator (7) and the second overflow valve (11) constitute system；Hydraulic pump (2), overflow
Stream valve (3), the first check valve (4), the second check valve (5) and the first accumulator (6) constitute the feed circuit of system.
2. a kind of excavator rotation energy recovery system according to claim 1, it is characterised in that the recovery valve group
(9) structure identical first pressure valve (91) and second pressure valve (92) are included, the oil-in of first pressure valve (91) is recovery
The hydraulic fluid port B of valve group (9), the oil-in of second pressure valve (92) are the hydraulic fluid port A for reclaiming valve group (9)；First pressure valve (91) go out
Hydraulic fluid port is connected with the oil-out of second pressure valve (92), and the hydraulic fluid port C as recovery valve group (9)；Second pressure valve (92) includes
Second spring (926) and the pressure being connected with sequence valve (927) that sequence valve (927) is connected with sequence valve (927) pilot poppet valve
Force control valve, sequence valve (927) into and out of hydraulic fluid port be second pressure valve (92) into and out of hydraulic fluid port.
3. a kind of excavator rotation energy recovery system according to claim 2, it is characterised in that the pressure-control valve
Including liquid resistance (921), control chamber (922), piston (923), spring cavity (924) and the first spring (925), sequence valve (927)
The oil-in that oil-in hinders (921) with liquid is connected, and the oil-out of liquid resistance (921) is connected with control chamber (922)；Piston (923) is situated between
Between control chamber (922) and spring cavity (924), the first spring (925) is located in spring cavity (924)；Spring cavity (924) with suitable
The drain tap of sequence valve (927) is connected, and takes back fuel tank (1)；(921) numerical value and control chamber (922) volume is hindered by adjusting liquid
Size and the setting value of the first spring (925), can adjust first stage rotation pressure and pressure setup time.
4. a kind of excavator rotation energy recovery system according to claim 2, it is characterised in that the first pressure valve
(91) integrate with second pressure valve (92)；Pressure-control valve is integrated with sequence valve (927), and pressure-control valve is
Integration member.
5. a kind of excavator rotation energy recovery system according to claim 1, it is characterised in that the rotary motor is total
Include rotary motor (101), the 4th check valve (102) and the 5th check valve (103), the hydraulic fluid port of rotary motor (101) into (10)
A, hydraulic fluid port B hydraulic fluid port A, hydraulic fluid port B for rotary motor assembly (10)；The oil-in and the 5th check valve of the 4th check valve (102)
(103) oil-in connects, and the hydraulic fluid port C as rotary motor assembly (10) is connected with the oil-out of the second check valve (5)；The
4th, the hydraulic fluid port A of the oil-out of five check valves (102,103) and rotary motor (101), hydraulic fluid port B is corresponding connects.
6. a kind of excavator rotation energy recovery system according to claim 1, it is characterised in that hydraulic pump (2)
For supplying the liquid that rushes of the first accumulator (6), the discharge capacity of hydraulic pump (2) meets revolution motor assembly (10) repairing under various operating modes
Required fluid amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025185.2U CN206015778U (en) | 2016-08-31 | 2016-08-31 | Excavator rotation energy recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621025185.2U CN206015778U (en) | 2016-08-31 | 2016-08-31 | Excavator rotation energy recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206015778U true CN206015778U (en) | 2017-03-15 |
Family
ID=58258421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621025185.2U Withdrawn - After Issue CN206015778U (en) | 2016-08-31 | 2016-08-31 | Excavator rotation energy recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206015778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223392A (en) * | 2016-08-31 | 2016-12-14 | 徐州徐工挖掘机械有限公司 | A kind of excavator rotation energy recovery system |
-
2016
- 2016-08-31 CN CN201621025185.2U patent/CN206015778U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223392A (en) * | 2016-08-31 | 2016-12-14 | 徐州徐工挖掘机械有限公司 | A kind of excavator rotation energy recovery system |
| CN106223392B (en) * | 2016-08-31 | 2018-07-24 | 徐州徐工挖掘机械有限公司 | A kind of excavator rotation energy recovery system |
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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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170315 Effective date of abandoning: 20180724 |