CN106088208A - Excavator revolution hydraulic control system - Google Patents
Excavator revolution hydraulic control system Download PDFInfo
- Publication number
- CN106088208A CN106088208A CN201610454932.2A CN201610454932A CN106088208A CN 106088208 A CN106088208 A CN 106088208A CN 201610454932 A CN201610454932 A CN 201610454932A CN 106088208 A CN106088208 A CN 106088208A
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- Prior art keywords
- mouth
- valve
- main pump
- way electromagnetic
- electromagnetic directional
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/225—Control of steering, e.g. for hydraulic motors driving the vehicle tracks
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The present invention relates to excavator revolution hydraulic control system, for solving the problem that existing hydraulic crawler excavator exists energy spill losses when revolution starts；There is provided a kind of excavator revolution hydraulic control system, including rotary motor assembly, main pump, the first three-position four-way electromagnetic directional valve, main pump proportional solenoid, main pump pressure transducer, pilot handle, controller；The pumping hole of main pump and the P mouth of the first three-position four-way electromagnetic directional valve connect, and the A mouth of the first three-position four-way electromagnetic directional valve, B mouth correspondence is connected with A mouth, the B mouth of rotary motor assembly；The control output end of pilot handle, main pump pressure transducer are connected with the input of controller, and the magnet control input of the first three-position four-way electromagnetic directional valve is connected with the outfan of controller.The present invention has element to be increased few, and technology is more ripe, with low cost is combined with electric-control system, control flexibility and reliability；The advantages such as capacity usage ratio is high, reduces and starts spill losses, and energy-saving effect is obvious.
Description
Technical field
The present invention relates to a kind of hydraulic control system, more particularly, it relates to a kind of excavator revolution hydraulic control system.
Background technology
The operating mode that hydraulic crawler excavator is the most often carried out is to excavate entrucking, and each excacation circulation can be experienced twice revolution and open
The dynamic process with rotary braking.It is illustrated in figure 1 modal excavator rotary system, by rotary motor work during rotary braking
The overflow valve overflow making hydraulic fluid port produces reactive torque, makes rotary decelerating until stopping.During this is braked, hydraulic oil warp
Overflow valve overflow, produces substantial amounts of heat, and the kinetic energy i.e. turned round is converted into the heat energy of hydraulic oil and is consumed.And turn round and started
Cheng Zhong, the rotary torque starting starting stage needs is very big, and revolution overflow valve can reach oil pressure relief, equally when speed of gyration reaches
After maximal rate, turn round operating pressure just can decline, but typically excavate the revolution of entrucking operating mode and be not up to maximal rate,
I.e. revolution startup equally exists bigger spill losses.
In the present stage patent about recovery rotary braking energy, it is only to recycle rotary braking energy, to reach
Energy-conservation purpose, but in conversion process of energy, Brake Energy cannot be recovered completely, and revolution cannot fully utilized be reclaimed when starting
Brake Energy, thus also need to former machine provide small part energy, still suffer from spill losses the most on startup, this part overflow
Loss is wasted with the form of heat energy equally, if it is possible to eliminate this part spill losses, can energy efficient further.
Summary of the invention
The technical problem to be solved in the present invention is to there is energy overflow when revolution starts for existing hydraulic crawler excavator to damage
The problem lost, and a kind of excavator revolution hydraulic pressure having energy regenerating and reducing energy spill losses when revolution starts is provided
Control system.
The present invention is such that providing a kind of excavator revolution hydraulic control system for the technical scheme realizing its purpose,
Including rotary motor assembly, main pump；Characterized by further comprising the first three-position four-way electromagnetic directional valve, the master of control main pump flow
Pump proportional solenoid, for detecting the main pump pressure transducer of main pump pump intake pressure, pilot handle, controller；Described main pump
Pumping hole is connected with the P mouth of described first three-position four-way electromagnetic directional valve, the A mouth of described first three-position four-way electromagnetic directional valve, B mouth
The A mouth of corresponding and described rotary motor assembly, B mouth are connected；The control output end of described pilot handle, main pump pressure transducer with
The input of described controller connects, the magnet control input of described first three-position four-way electromagnetic directional valve and described control
The outfan of device connects.
In above-mentioned excavator revolution hydraulic control system, also include that rotation energy recovery system, described rotation energy are returned
Receipts system include accumulator, shuttle valve, the second three-position four-way electromagnetic directional valve, the first bi-bit bi-pass solenoid directional control valve, the two or two
Two electric change valves, for detecting the energy storage pressure sensor of energy storage pressure；Two oil-ins of described shuttle valve corresponding with
The A mouth of rotary motor assembly, B mouth connect, and the outlet of shuttle valve is successively through the first bi-bit bi-pass solenoid directional control valve, the second bi-bit bi-pass
Solenoid directional control valve is connected with accumulator；The A mouth of described second three-position four-way electromagnetic directional valve, B mouth correspondence and rotary motor assembly
A mouth, B mouth connect, the P mouth of described second three-position four-way electromagnetic directional valve be connected to the first bi-bit bi-pass solenoid directional control valve, the
Between two bi-bit bi-pass solenoid directional control valves；Described second three-position four-way electromagnetic directional valve, the first bi-bit bi-pass solenoid directional control valve,
Each magnet control input of two bi-bit bi-pass solenoid directional control valves is connected with the outfan of described controller；Described accumulator pressure
Force transducer is connected with the control input of described controller.
In above-mentioned excavator revolution hydraulic control system, the connection of the P mouth of described second three-position four-way electromagnetic directional valve
The check valve of the P mouth one-way conduction of oriented second three-position four-way electromagnetic directional valve is set on oil circuit.
In above-mentioned excavator revolution hydraulic control system, main pump drive revolution through the first three-position four-way electromagnetic directional valve
Motor assembly and when main pump pump intake pressure more than the first preset value time, described controller by main pump proportional solenoid by described master
Pump delivery is reduced to hydraulic motor necessary flow, and described controller leads to when main pump pump intake pressure drops to the second preset value
Cross the delivery work of main pump described in main pump proportional solenoid valve control.
Compared with prior art, the present invention has element to be increased few the present invention, and technology is more ripe, with low cost and automatically controlled system
System combines, and controls flexibility and reliability；The advantages such as capacity usage ratio is high, reduces and starts spill losses, and energy-saving effect is obvious.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of excavator of the present invention revolution hydraulic control system.
Parts title and sequence number in figure:
Control in Hydraulic Rotation System 1, rotation energy recovery system 2, hands guide's handle 3, controller 4, rotary motor assembly 11, first
Three-position four-way electromagnetic directional valve 12, main pump 13, rotary motor the 111, first overflow valve the 112, second overflow valve 113, main pump pressure
Sensor 131, main pump proportional solenoid the 132, first bi-bit bi-pass solenoid directional control valve 21, check valve the 22, second 3-position 4-way electricity
Magnetic reversal valve 23, shuttle valve 24, accumulator 25, pressure transducer the 26, second bi-bit bi-pass solenoid directional control valve 27.
Detailed description of the invention
Specific embodiments is described below in conjunction with the accompanying drawings.
Excavator revolution hydraulic control system in the present invention is as it is shown in figure 1, it includes Control in Hydraulic Rotation System 1 and revolution energy
Amount recovery system 2, Control in Hydraulic Rotation System 1 include rotary motor assembly 11, main pump the 13, first three-position four-way electromagnetic directional valve 12,
Main pump proportional solenoid 132, main pump pressure transducer 131, pilot handle 3, controller 4；
Main pump pressure transducer 131 is provided with on the pumping hole output circuit of main pump 13, for detecting the pumping hole pressure of main pump 13
Power.
Main pump proportional solenoid 132 is arranged in main pump 13, and its effect is the output flow that regulation controls main pump 13.
The pumping hole of main pump 13 and the P mouth of the first three-position four-way electromagnetic directional valve 12 connect, the first 3-position 4-way electromagnetic switch
The T mouth of valve 12 is connected with hydraulic oil container.
The A mouth of the first three-position four-way electromagnetic directional valve 12, B mouth correspondence is connected with A mouth, the B mouth of rotary motor assembly 11；
Rotary motor assembly 11 includes rotary motor the 111, first overflow valve the 112, second overflow valve 113, rotary motor 111
A mouth and B mouth is respectively corresponding is connected with A mouth, the B mouth of rotary motor assembly 11, the oil-in of the first overflow valve 112 and
The A mouth of rotary motor 111 connects, and the oil-in of the second overflow valve 113 is connected with the B mouth of rotary motor 111；First overflow valve
112 and second overflow valve 113 oil-out parallel connection after be connected with fuel tank loop through the oil return opening of rotary motor assembly 11.One or three
When position four-way electromagnetic reversing valve is in left position or right position, the hydraulic oil that main pump is discharged drives rotary motor forward or reverse.
Rotation energy recovery system 2 includes accumulator 25, shuttle valve the 24, second three-position four-way electromagnetic directional valve the 23, the 1st
Position two electric change valve the 21, second bi-bit bi-pass solenoid directional control valves 27, energy storage pressure sensor 26.Energy storage pressure senses
Device 26 is for detecting the pressure of accumulator 25.
Two oil-in A mouths A mouth, the B mouth with rotary motor assembly 11 corresponding with B mouth of shuttle valve 24 is connected, going out of shuttle valve 24
Mouthful (C mouth) is connected with the P mouth of the first bi-bit bi-pass solenoid directional control valve 21, the T mouth of the first bi-bit bi-pass solenoid directional control valve 21 and the
The P mouth of two bi-bit bi-pass solenoid directional control valves 27 connects, and the T mouth of the second bi-bit bi-pass solenoid directional control valve 27 is connected with accumulator 25.
The A mouth of the second three-position four-way electromagnetic directional valve 23, B mouth correspondence is connected with A mouth, the B mouth of rotary motor assembly 11, the
The P mouth of two three-position four-way electromagnetic directional valve 23 connects check valve 22, and check valve 22 is to the P of the second three-position four-way electromagnetic directional valve 23
Mouth direction one-way conduction；The oil-in of check valve 22 is connected to first bi-bit bi-pass solenoid directional control valve the 21, second bi-bit bi-pass electricity
Between magnetic reversal valve 27, namely it is connected with the P mouth of the second bi-bit bi-pass solenoid directional control valve 27.When the second 3-position 4-way electromagnetic switch
Valve 23 be in left position or right position and the second bi-bit bi-pass solenoid directional control valve 27 in the conduction state time, accumulator 25 output high pressure
Hydraulic oil through the second three-position four-way electromagnetic directional valve 23 to rotary motor assembly fuel feeding so that it is rotate.
The signal of telecommunication control output end of pilot handle 3, main pump pressure transducer 131, energy storage pressure sensor 26 and control
The input of device 4 processed connects, first three-position four-way electromagnetic directional valve the 12, second three-position four-way electromagnetic directional valve the 23, the 1st
Each magnet control input of two electric change valve the 21, second bi-bit bi-pass solenoid directional control valves 27 and the output of controller 4
End connects.
Excavator revolution hydraulic control system work process in the present embodiment is as follows:
When rotary motor 111 runs well, it is assumed that fluid is flowed into by the A mouth of rotary motor 111, then flowed out through the by B mouth
One three-position four-way electromagnetic directional valve 12 flows back to hydraulic oil container, and when revolution operation stops, i.e. hands guide handle 3 no pressure signal is defeated
Going out, controller 4 sends control signal to the first three-position four-way electromagnetic directional valve 12 and is returned to middle position；To main pump proportional solenoid
132 send control signal so that it is control main pump 13 discharge capacity minimum；Control signal is sent to the first bi-bit bi-pass solenoid directional control valve 21
It is at bottom, the most in the conduction state；Send control signal to the second bi-bit bi-pass solenoid directional control valve 27 to be at down
Position i.e. conducting state.Simultaneously because inertia, revolution maintains former direction to continue to rotate, flows out high-voltage oil liquid, oil from rotary motor B mouth
Liquid flows into through the B oil-in of shuttle valve 24, and C oil-out flows out, then through first bi-bit bi-pass solenoid directional control valve the 21, second bi-bit bi-pass
Solenoid directional control valve 27 flows into accumulator 25, and revolution stops accumulator 25 and completes energy regenerating.
When operated pilot handle 3 drives rotary system, by pressure transducer 26, controller 4 judges accumulator 25 whether
Can export fluid, if permissible, controller 4 is to first bi-bit bi-pass solenoid directional control valve the 21, second bi-bit bi-pass solenoid directional control valve
27 send control signal makes the first bi-bit bi-pass solenoid directional control valve 21 reset, and is i.e. in by state, the second bi-bit bi-pass electromagnetism
Reversal valve 27 is in bottom, the most in the conduction state；Send control signal to the second three-position four-way electromagnetic directional valve 23 to make at it
Yu Zuowei or right position；Fluid flows out through accumulator 25, then through first bi-bit bi-pass solenoid directional control valve the 21, second bi-bit bi-pass electromagnetism
Reversal valve 27 and the second three-position four-way electromagnetic directional valve 23 flow into the A mouth of rotary motor 111 or B mouth drives rotary motor 111 to open
Dynamic.
In the process, controller 4 detects the pressure of energy storage pressure sensor 26, if pressure is less than setting value, controls
Device sends control signal to first bi-bit bi-pass solenoid directional control valve the 21, second bi-bit bi-pass solenoid directional control valve 27 makes both be in
Upper, i.e. it is in by state, sends during control signal makes it reset and be i.e. in the second three-position four-way electromagnetic directional valve 23
Position, now rotation energy recovery system 2 no longer works.Controller 4 sends control to the first three-position four-way electromagnetic directional valve 12
Signal is at left position or right position, continues to provide fluid for system.Controller 4 is according to main pump pressure transducer 131 simultaneously
Pressure signal judges whether rotary motor reaches oil pressure relief, namely whether main pump pump intake pressure reaches the first preset value (generally
Overflow value for rotary motor).If the detection pressure of pressure transducer 131 reaches the first preset value, controller 4 is to main pump ratio
Electromagnetic valve 132 sends control signal so that it is controls main pump 13 and reduces discharge capacity, i.e. reaches fluid " required and gained ", make main pump carry
For fluid needed for rotary motor, eliminate the spill losses that rotary motor starts.Wherein rotary motor necessary flow is by controlling
Device is calculated, controls discharge of main pump the most in real time and mates rotary motor necessary flow, and the discharge capacity of rotary motor is fixing
, pressure transducer gathers pressure and then can draw rotary motor moment of torsion, and the rotary inertia of rotary system is also known, so
It is rear that it is known that the revolution acceleration of rotary system, controller also detects the pilot signal of pilot handle 3, operation revolution time
Between just determine that.As above can show that rotary motor rotating speed, the product of revolution rotating speed and discharge capacity turn round flow exactly.Work as main pump
When 13 pressure drop to the second preset value, rotary motor 111 reaches maximum speed, and controller passes through main pump proportional solenoid 132
Recover main pump delivery fuel feeding.Second preset value can be set according to the parameter of machine, and this pressure is that hydraulic motor is in
Steady pressure during high rotating speed.If pressure transducer 131 pressure is not reaching to oil pressure relief, main pump 13 is not controlled by controller 4
System, main pump normally provides fluid for rotary motor.
Claims (4)
1. an excavator revolution hydraulic control system, including rotary motor assembly, main pump；Characterized by further comprising the one or three
Position four-way electromagnetic reversing valve, control the main pump proportional solenoid of main pump flow, for detecting the main pump pressure of main pump pump intake pressure
Sensor, pilot handle, controller；The pumping hole of described main pump is connected with the P mouth of described first three-position four-way electromagnetic directional valve, institute
State the A mouth of the first three-position four-way electromagnetic directional valve, the A mouth of the corresponding and described rotary motor assembly of B mouth, B mouth are connected；Described guide
The control output end of handle, main pump pressure transducer are connected with the input of described controller, described first 3-position 4-way electromagnetism
The magnet control input of reversal valve is connected with the outfan of described controller.
Excavator the most according to claim 1 revolution hydraulic control system, it is characterised in that also include that rotation energy reclaims
System, described rotation energy recovery system includes accumulator, shuttle valve, the second three-position four-way electromagnetic directional valve, the first bi-bit bi-pass
Solenoid directional control valve, the second bi-bit bi-pass solenoid directional control valve, for detecting the energy storage pressure sensor of energy storage pressure；Described shuttle
Two oil-in correspondences of valve are connected with A mouth, the B mouth of rotary motor assembly, and the outlet of shuttle valve is successively through the first bi-bit bi-pass electromagnetism
Reversal valve, the second bi-bit bi-pass solenoid directional control valve are connected with accumulator；The A mouth of described second three-position four-way electromagnetic directional valve, B mouth
Correspondence is connected with A mouth, the B mouth of rotary motor assembly, and the P mouth of described second three-position four-way electromagnetic directional valve is connected to the one or two
Between two electric change valves, the second bi-bit bi-pass solenoid directional control valve；Described second three-position four-way electromagnetic directional valve, the one or two
Two electric change valves, each magnet control input of the second bi-bit bi-pass solenoid directional control valve and the outfan of described controller
Connect；Described energy storage pressure sensor is connected with the control input of described controller.
Excavator the most according to claim 2 revolution hydraulic control system, it is characterised in that described second 3-position 4-way electricity
The check valve connecting the P mouth one-way conduction that oriented second three-position four-way electromagnetic directional valve is set on oil circuit of the P mouth of magnetic reversal valve.
Excavator the most according to any one of claim 1 to 3 revolution hydraulic control system, it is characterised in that by main pump warp
First three-position four-way electromagnetic directional valve drives revolution motor assembly and when main pump pump intake pressure is more than the first preset value, described control
Described main pump delivery is reduced to hydraulic motor necessary flow by main pump proportional solenoid by device processed, and at main pump pump intake pressure
Drop to described controller during the second preset value worked by the delivery of main pump described in main pump proportional solenoid valve control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610454932.2A CN106088208B (en) | 2016-06-21 | 2016-06-21 | Excavator turns round hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610454932.2A CN106088208B (en) | 2016-06-21 | 2016-06-21 | Excavator turns round hydraulic control system |
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| CN106088208A true CN106088208A (en) | 2016-11-09 |
| CN106088208B CN106088208B (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610454932.2A Active CN106088208B (en) | 2016-06-21 | 2016-06-21 | Excavator turns round hydraulic control system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869223A (en) * | 2017-02-15 | 2017-06-20 | 广西柳工机械股份有限公司 | The control method of excavator positive-flow hydraulic system |
| CN108643276A (en) * | 2018-06-06 | 2018-10-12 | 马鞍山松鹤信息科技有限公司 | A kind of energy saving excavator with energy-recuperation system |
| CN108915021A (en) * | 2018-07-27 | 2018-11-30 | 徐州工业职业技术学院 | A kind of hydraulic crawler excavator multi-mode revolution electrohydraulic control system |
| CN109973452A (en) * | 2017-12-28 | 2019-07-05 | 中国铁建高新装备股份有限公司 | A kind of hydraulic walking system plugging control valve |
| CN110747934A (en) * | 2019-10-24 | 2020-02-04 | 山重建机有限公司 | Rotary energy-saving device of electric hydraulic excavator |
| CN112105785A (en) * | 2018-05-14 | 2020-12-18 | 株式会社神户制钢所 | Hydraulic drive device for construction machine |
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| JPH10183689A (en) * | 1996-12-25 | 1998-07-14 | Shin Caterpillar Mitsubishi Ltd | Hydraulic control device |
| CN102979133A (en) * | 2012-11-26 | 2013-03-20 | 柳州柳工挖掘机有限公司 | Rotary brake energy recycling device of hydraulic excavator |
| CN203452118U (en) * | 2013-08-30 | 2014-02-26 | 华南理工大学 | Hydraulic rotation energy-saving system for excavator |
| CN103628512A (en) * | 2013-11-15 | 2014-03-12 | 中外合资沃得重工（中国）有限公司 | Rotary hydraulic control device of excavator movable arm platform and control method |
| US20160138246A1 (en) * | 2016-01-25 | 2016-05-19 | Caterpillar Inc. | Regenerative machine coupling system |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10183689A (en) * | 1996-12-25 | 1998-07-14 | Shin Caterpillar Mitsubishi Ltd | Hydraulic control device |
| CN102979133A (en) * | 2012-11-26 | 2013-03-20 | 柳州柳工挖掘机有限公司 | Rotary brake energy recycling device of hydraulic excavator |
| CN203452118U (en) * | 2013-08-30 | 2014-02-26 | 华南理工大学 | Hydraulic rotation energy-saving system for excavator |
| CN103628512A (en) * | 2013-11-15 | 2014-03-12 | 中外合资沃得重工（中国）有限公司 | Rotary hydraulic control device of excavator movable arm platform and control method |
| US20160138246A1 (en) * | 2016-01-25 | 2016-05-19 | Caterpillar Inc. | Regenerative machine coupling system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869223A (en) * | 2017-02-15 | 2017-06-20 | 广西柳工机械股份有限公司 | The control method of excavator positive-flow hydraulic system |
| CN109973452A (en) * | 2017-12-28 | 2019-07-05 | 中国铁建高新装备股份有限公司 | A kind of hydraulic walking system plugging control valve |
| CN109973452B (en) * | 2017-12-28 | 2024-01-23 | 中国铁建高新装备股份有限公司 | Reverse braking control valve for hydraulic traveling system |
| CN112105785A (en) * | 2018-05-14 | 2020-12-18 | 株式会社神户制钢所 | Hydraulic drive device for construction machine |
| CN108643276A (en) * | 2018-06-06 | 2018-10-12 | 马鞍山松鹤信息科技有限公司 | A kind of energy saving excavator with energy-recuperation system |
| CN108915021A (en) * | 2018-07-27 | 2018-11-30 | 徐州工业职业技术学院 | A kind of hydraulic crawler excavator multi-mode revolution electrohydraulic control system |
| CN108915021B (en) * | 2018-07-27 | 2021-02-05 | 徐州工业职业技术学院 | Multi-mode rotary electrohydraulic control system for hydraulic excavator |
| CN110747934A (en) * | 2019-10-24 | 2020-02-04 | 山重建机有限公司 | Rotary energy-saving device of electric hydraulic excavator |
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| CN106088208B (en) | 2018-07-13 |
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