CN108082278A - A kind of machine driving articulated truck assisted diversion hydraulic system - Google Patents
A kind of machine driving articulated truck assisted diversion hydraulic system Download PDFInfo
- Publication number
- CN108082278A CN108082278A CN201711221370.8A CN201711221370A CN108082278A CN 108082278 A CN108082278 A CN 108082278A CN 201711221370 A CN201711221370 A CN 201711221370A CN 108082278 A CN108082278 A CN 108082278A
- Authority
- CN
- China
- Prior art keywords
- steering
- electromagnetic clutch
- assisted diversion
- hydraulic system
- steering gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims abstract description 13
- 239000000446 fuel Substances 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 206010037660 Pyrexia Diseases 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/062—Details, component parts
- B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention discloses a kind of machine driving articulated truck assisted diversion hydraulic system, including load sensitive pump, wheel driver, controller, steering gear, steering cylinder and electromagnetic clutch；Electromagnetic clutch is connected between wheel driver and load sensitive pump；Controller receives the fuel injection pressure signal for turning to oil supply system, and control electromagnetic clutch obtains dead electricity；It is engaged when electromagnetic clutch obtains electric, realizes the driving of wheel responsive to load pump, load sensitive pump the output phase answers fluid to enter steering gear, fluid is distributed to steering cylinder by steering gear；It is disconnected during electromagnetic clutch dead electricity, load sensitive pump is made to shut down.The invention avoids the limitations using accumulator as power source and unsustainable property, the problems such as also avoiding doing standby fever and the operational heat of power source with constant displacement pump；The life and reliability of assisted diversion power source is improved, expands the application range of assist steering system, and energy consumption is greatly reduced.
Description
Technical field
The present invention relates to a kind of assisted diversion hydraulic systems, are specifically a kind of machine driving articulated truck assisted diversion
Hydraulic system belongs to engineering machinery hydraulic technical field.
Background technology
Articulated truck is a kind of product of dump truck tonnage and small volume, therefore can be narrow by space
Small, the severe even red route of road conditions, this requires vehicle must be with back-up steering systems such as assisted diversions, to avoid vehicle
Traveling during lose turning function and trigger danger.In addition, after vehicle breaks down, disabled vehicle is drawn using trailer fashion
During to nearest maintenace point, disabled vehicle needs assist steering system, to ensure the turning function of trailer process.
A kind of assist steering system is to realize assisted diversion as power source using accumulator, but accumulator volume is big,
It is extremely difficult in space layout and maintenance, and offer power source is limited, continuation is poor.
Another assisted diversion is to drive hydraulic pump as the power source of assisted diversion, the program by the use of the rotation of wheel
Selecting constant displacement pump, when turning function does not break down, the constant displacement pump of assisted diversion is low in big flow always as power source
The holding state of off-load is pressed, there are certain heating problem, in addition, when assisted diversion works, is needed under different road conditions
High pressure flow it is different, the excess traffic of constant displacement pump can only be discharged by high pressure unloading, and fever is more serious, turn this auxiliary
To reliability be difficult to maintain.
The content of the invention
Problem for the above-mentioned prior art, the present invention provide a kind of machine driving articulated truck assist steering system.
When turning function does not break down, assist steering system is not involved in work, it is often more important that, turning to failure and assisted diversion
When enabling, high pressure fuel source can be provided on demand, it is entirely avoided serious heating problem, it is ensured that assisted diversion have it is higher can
By property, more energy saving.In addition, the assist steering system can be worked at the same time with steering, meet more stringent steering need
It asks.
To achieve these goals, the technical solution adopted by the present invention is：A kind of machine driving articulated truck auxiliary
Steering hydraulic system, it is characterised in that：Including load sensitive pump, wheel driver, controller, steering gear, steering cylinder and electricity
Magnet clutch；
Electromagnetic clutch is connected between wheel driver and load sensitive pump；Controller receives the oil pressure for turning to oil supply system
Signal, control electromagnetic clutch obtain dead electricity；
Engaged when electromagnetic clutch obtains electric, realize the driving of wheel responsive to load pump, load sensitive pump the output phase answer fluid into
Enter steering gear, fluid is distributed into steering cylinder by steering gear；It is disconnected during electromagnetic clutch dead electricity, load sensitive pump is made to stop fortune
Turn.
Further include a starting switch, the keying signal that controller is sent according to the starting switch received, control electromagnetism from
Clutch obtains dead electricity.
The assisted diversion hydraulic system is independent or is worked at the same time with steering.
When detecting that the operating pressure for turning to oil supply system is located at the pressure range of steering normal work, controller
Electromagnetic clutch dead electricity is controlled, load sensitive pump shuts down；Under the operating mode, the assisted diversion hydraulic system, which is in, shuts down shape
State, steering normal work.
When detecting that the operating pressure for turning to oil supply system is less than the minimum operating pressure of steering, controller control
Electromagnetic clutch obtain it is electric, load sensitive pump under the driving of wheel driver, according to the LS of steering gear feed back load signal,
Corresponding fluid is exported, fluid enters steering gear, and fluid is distributed to steering cylinder by steering gear；Under the operating mode, steering event
Barrier, assist steering system participate in work.
The fluid of load sensitive pump output enters steering gear through a check valve.
After controller receives the enabling signal from starting switch, electromagnetic clutch is controlled to obtain electric, realize that load is quick
The operating of pump is felt, after assist steering system and steering are collaborated while to steering gear fuel feeding, and according to the LS signals of steering gear
Corresponding fluid is provided to steering；Under the operating mode, steering and assist steering system work at the same time.
Assist steering system and/or the fluid of output enter steering gear through a check valve respectively.
Advantageous effect：
Compared with prior art, this assist steering system is avoided using accumulator as the limitations of power source and unsustainable
Property, the problems such as also avoiding doing standby fever and the operational heat of power source with constant displacement pump.Improve assisted diversion power source
Life and reliability, expands the application range of assist steering system, and energy consumption is greatly reduced.
Description of the drawings
Fig. 1 is the control principle drawing of the present invention；
In figure：1st, hydraulic oil container；2nd, load sensitive pump；3rd, electromagnetic clutch；4th, wheel driver；5th, starting switch；6th, control
Device processed；7th, oil supply system is turned to；8th, steering gear；P steering gear oil inlets；LS is steering gear load-sensitive hydraulic fluid port；9th, steering cylinder；
10th, check valve.
Specific embodiment
Below in conjunction with attached drawing, the present invention is further illustrated.The present invention is made furtherly below in conjunction with the accompanying drawings
It is bright.
With reference to Fig. 1, machine driving articulated truck assisted diversion hydraulic system includes load sensitive pump 2, wheel drives
Device 4, controller 6, steering gear 8, steering cylinder 9 and electric-control system.Electric-control system includes electromagnetic clutch 3, starting switch 5 and control
Device 6 processed.For electromagnetic clutch 3 between wheel driver 4 and load sensitive pump 2, controller 6, which receives, turns to oil supply system 7
Oil pressure condition and starting switch 5 opening and closing situation signal, and electromagnetic clutch 3 is controlled with this, electromagnetic clutch 3 it is electric when connect
It closes, realizes the driving of wheel responsive to load pump 2, when dead electricity disconnects, and load sensitive pump 2 shuts down.
When vehicle normal operation, it is normal that controller 6 detects that the operating pressure for turning to oil supply system 7 is located at steering
During the pressure range of work, by 3 dead electricity of electromagnetic clutch, electromagnetic clutch 3 disconnects 4 responsive to load of wheel driver pump 2
Driving.Under this operating mode, oil supply system normal work is turned to, which is in shutdown status.
When turning to oil supply system failure, controller 6 detects the operating pressure for turning to oil supply system less than steering
The minimum operating pressure of system is powered to electromagnetic clutch 3, and electromagnetic clutch 3 must electrically engage, and load sensitive pump 2 drives in wheel
Under the driving of dynamic device 4, according to the LS signals of steering gear 8, corresponding high-voltage oil liquid is exported, fluid is entered by check valve 10 to be turned
To device 8, fluid is distributed to steering cylinder 9 by steering gear 8, realizes go to action.Under this operating mode, steering failure, the auxiliary
Steering participates in work, and since the assist steering system is load sensitive system, flow system flow and pressure are completely according to steering
The LS signals that device 8 is fed back provide, and caloric value is smaller.
When vehicle normal operation, but driver thinks that road conditions are exceedingly odious, it is necessary to during faster turning velocity, can drive
Starting switch 5 is pressed in interior, after controller 6 receives the signal from starting switch 5, powers to electromagnetic clutch 3, realizes negative
The operating of sensitive pump 2 is carried, after assist steering system and steering are collaborated by check valve 10 at this time, while is supplied to steering gear 8
Oil, and according to the LS signals of steering gear 8 corresponding high-voltage oil liquid is provided to steering.Under this operating mode, steering and auxiliary
Steering is helped to work at the same time, the high pressure flow of bigger can be provided to steering gear 8, to meet the needs of extreme operating condition.
Claims (8)
1. a kind of machine driving articulated truck assisted diversion hydraulic system, it is characterised in that：Including load sensitive pump, wheel
Driving device, controller, steering gear, steering cylinder and electromagnetic clutch；
Electromagnetic clutch is connected between wheel driver and load sensitive pump；Controller receives the oil pressure for turning to oil supply system
Signal, control electromagnetic clutch obtain dead electricity；
Engaged when electromagnetic clutch obtains electric, realize the driving of wheel responsive to load pump, load sensitive pump the output phase answer fluid into
Enter steering gear, fluid is distributed into steering cylinder by steering gear；It is disconnected during electromagnetic clutch dead electricity, load sensitive pump is made to stop fortune
Turn.
2. a kind of machine driving articulated truck assisted diversion hydraulic system according to claim 1, it is characterised in that：
A starting switch is further included, the keying signal that controller is sent according to the starting switch received controls electromagnetic clutch gain and loss
Electricity.
3. a kind of machine driving articulated truck assisted diversion hydraulic system according to claim 2, it is characterised in that：
The assisted diversion hydraulic system is independent or is worked at the same time with steering.
4. a kind of machine driving articulated truck assisted diversion hydraulic system according to claim 1 or 3, feature exist
In：When detecting that the operating pressure for turning to oil supply system is located at the pressure range of steering normal work, controller control
Electromagnetic clutch dead electricity, load sensitive pump shut down；Under the operating mode, the assisted diversion hydraulic system is in shutdown status,
Steering works normally.
5. a kind of machine driving articulated truck assisted diversion hydraulic system according to claim 1 or 3, feature exist
In：When detecting that the operating pressure for turning to oil supply system is less than the minimum operating pressure of steering, controller control electromagnetism
Clutch obtain it is electric, load sensitive pump under the driving of wheel driver, according to the LS of steering gear feed back load signal, output
Corresponding fluid, fluid enter steering gear, and fluid is distributed to steering cylinder by steering gear；Under the operating mode, steering failure is auxiliary
Steering is helped to participate in work.
6. a kind of machine driving articulated truck assisted diversion hydraulic system according to claim 5, it is characterised in that：
The fluid of load sensitive pump output enters steering gear through a check valve.
7. a kind of machine driving articulated truck assisted diversion hydraulic system according to claim 3, it is characterised in that：
After controller receives the enabling signal from starting switch, electromagnetic clutch is controlled to obtain electric, realize the fortune of load sensitive pump
Turn, simultaneously to steering gear fuel feeding after assist steering system and steering interflow, and according to the LS signals of steering gear to steering system
System provides corresponding fluid；Under the operating mode, steering and assist steering system work at the same time.
8. a kind of machine driving articulated truck assisted diversion hydraulic system according to claim 7, it is characterised in that：
Assist steering system and/or the fluid of output enter steering gear through a check valve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711221370.8A CN108082278B (en) | 2017-11-22 | 2017-11-22 | Mechanical transmission hinged auxiliary steering hydraulic system of dumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711221370.8A CN108082278B (en) | 2017-11-22 | 2017-11-22 | Mechanical transmission hinged auxiliary steering hydraulic system of dumper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108082278A true CN108082278A (en) | 2018-05-29 |
| CN108082278B CN108082278B (en) | 2024-04-05 |
Family
ID=62173274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711221370.8A Active CN108082278B (en) | 2017-11-22 | 2017-11-22 | Mechanical transmission hinged auxiliary steering hydraulic system of dumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108082278B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201882141U (en) * | 2010-12-13 | 2011-06-29 | 湘电重型装备股份有限公司 | Steering hydraulic integrated system of electric-wheel dump car |
| CN102588370A (en) * | 2012-02-24 | 2012-07-18 | 三一重工股份有限公司 | Preferential valve bank and dynamic-load-sensing preferential steering hydraulic system |
| CN103882897A (en) * | 2012-12-20 | 2014-06-25 | 青岛鲁达工程机械制造有限公司 | Loader hydraulic system |
| CN105216861A (en) * | 2015-10-22 | 2016-01-06 | 中联重机股份有限公司 | Trac. hydrostatic power steering system is united |
| CN205022676U (en) * | 2015-08-12 | 2016-02-10 | 安期生鑫茂（北京）矿山机械有限公司 | Variable hydraulic system of underground mine -car |
| CN205035847U (en) * | 2015-08-12 | 2016-02-17 | 安期生鑫茂（北京）矿山机械有限公司 | Underground scraper decides variable hydraulic system |
| CN207433623U (en) * | 2017-11-22 | 2018-06-01 | 徐州徐工矿山机械有限公司 | A kind of machine driving articulated truck assisted diversion hydraulic system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005112280A (en) * | 2003-10-10 | 2005-04-28 | Kayaba Ind Co Ltd | Power steering device |
| KR20120062266A (en) * | 2010-12-06 | 2012-06-14 | 현대자동차주식회사 | Electro hydraulic power steering system and method thereof |
| JP5276088B2 (en) * | 2010-12-24 | 2013-08-28 | 日立オートモティブシステムズステアリング株式会社 | Power steering device |
| CN103738396A (en) * | 2013-12-27 | 2014-04-23 | 三一汽车起重机械有限公司 | Constant flow steering system and engineering machinery |
-
2017
- 2017-11-22 CN CN201711221370.8A patent/CN108082278B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201882141U (en) * | 2010-12-13 | 2011-06-29 | 湘电重型装备股份有限公司 | Steering hydraulic integrated system of electric-wheel dump car |
| CN102588370A (en) * | 2012-02-24 | 2012-07-18 | 三一重工股份有限公司 | Preferential valve bank and dynamic-load-sensing preferential steering hydraulic system |
| CN103882897A (en) * | 2012-12-20 | 2014-06-25 | 青岛鲁达工程机械制造有限公司 | Loader hydraulic system |
| CN205022676U (en) * | 2015-08-12 | 2016-02-10 | 安期生鑫茂（北京）矿山机械有限公司 | Variable hydraulic system of underground mine -car |
| CN205035847U (en) * | 2015-08-12 | 2016-02-17 | 安期生鑫茂（北京）矿山机械有限公司 | Underground scraper decides variable hydraulic system |
| CN105216861A (en) * | 2015-10-22 | 2016-01-06 | 中联重机股份有限公司 | Trac. hydrostatic power steering system is united |
| CN207433623U (en) * | 2017-11-22 | 2018-06-01 | 徐州徐工矿山机械有限公司 | A kind of machine driving articulated truck assisted diversion hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108082278B (en) | 2024-04-05 |
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