CN202245777U - Electric hydraulic system for crawler crane - Google Patents
Electric hydraulic system for crawler crane Download PDFInfo
- Publication number
- CN202245777U CN202245777U CN2011203416909U CN201120341690U CN202245777U CN 202245777 U CN202245777 U CN 202245777U CN 2011203416909 U CN2011203416909 U CN 2011203416909U CN 201120341690 U CN201120341690 U CN 201120341690U CN 202245777 U CN202245777 U CN 202245777U
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- China
- Prior art keywords
- crawler crane
- hydraulic system
- controller
- hydraulic
- speed regulator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
An electric hydraulic system for a crawler crane relates to the technical field of a control system of hoisting equipment, and comprises a DC (direct current) speed adjusting system, a load adjusting system, a hydraulic system and a display, wherein the DC speed adjusting system comprises a DC speed adjusting device; the DC speed adjusting device is connected with a DC motor; the DC motor is connected with an oil pump for supplying hydraulic oil to the hydraulic system; and the hydraulic system is connected with the hoisting mechanism, the luffing mechanism, the swing mechanism, the travelling mechanism and each oil cylinder of the crawler crane. Through the adoption of the electric hydraulic system, the use and maintenance costs of the crawler crane can be greatly reduced; the environmental pollution and the fatigue degree of a driver are reduced; the reliability and the safety of the operation of the crawler crane and the work efficiency are improved; and the operation is simple. The successful research and development of the electric hydraulic system fill in the gap in the field in China, so that the electric hydraulic system has a very high popularization value.
Description
Technical field
The utility model relates to the control system technical field of weight-lifting equipment, relates in particular to a kind of crawler crane electro hydraulic system.
Background technology
Crawler crane is that hoisting operation partly is contained on the crawler body, and walking relies on the runabout crane of crawler attachment.Can carry out operations such as material lifting, transportation, loading and unloading and installation.Crawler crane has that load-carrying ability is strong, grounding pressure is little, turn radius is little, hill climbing ability greatly, does not need supporting leg, band carries and goes, job stabilization is good and the truss combined altitudes such as can freely change at advantage, is widely used in construction industries such as electric power, municipal administration, bridge, petrochemical complex, water conservancy and hydropower.At present, the employed control system of crawler crane generally has two kinds of patterns: full hydraulic system and all-electric system.Full hydraulic system is to drive each reductor, motor operations by the supporting oil pump of diesel motor, the complete machine stable and reliable operation, and simple to operate, it is propulsion source that weak point is to use diesel oil, this just makes that the cost of operation and maintenance is very high.All-electric system orders about each reductor work by electrical motor, though need not expend fuel oil, machine shape is huge, very heavy, and operating sequence is also very complicated.
The utility model content
The utility model purpose is to above weak point, and providing a kind of can combine and the hoisting crane electro hydraulic system of reliable operation power driven system and hydraulic efficiency pressure system are effective and reasonable.
For solving the problems of the technologies described above; The technical scheme of the utility model is: the crawler crane electro hydraulic system; Comprise Direct Current Governor System, load adjustment system, hydraulic efficiency pressure system and telltale; Said Direct Current Governor System comprises DC speed regulator, and said DC speed regulator connects DC motor, and said DC motor connects the oil pump that is used to said hydraulic efficiency pressure system confession hydraulic oil; Said hydraulic efficiency pressure system is connected with lifting mechanism, luffing mechanism, swing type mechanism, traveling gear and each oil cylinder of said crawler crane.
As further improvement, said load adjustment system comprises first controller that is used to regulate said oil pump pivot angle.Said DC speed regulator connects the speed feedback device of efp, said first controller and said DC motor.Said speed feedback device is a tachogenerator.Pass through the total wire joint of serial communication interface between said first controller and the DC speed regulator.Said hydraulic efficiency pressure system comprises second controller that is used to control each hydraulic valve, the said second controller coupling torque killer, sensor, operating handle, input and output mould and each hydraulic valve.Pass through the total wire joint of a CAN between said second controller, limiter of moment and the input/output module.Pass through the total wire joint of the 2nd CAN between said first controller, second controller, telltale and the operating handle.
As further improvement, the input end of said DC speed regulator connects the mouth of current colector, and said current colector is connected with the swivel coupling that is used for delivery hydraulic pressure oil, and the input end of said current colector is through the cable connection source of AC.
As further improvement; Said electro hydraulic system also comprises key control branch road, and said key control branch road comprises and is used for sending one of electricity to keep off, be used for sending two retainings of electricity and three retainings that are used to start said DC speed regulator to said DC speed regulator to said control system.
The beneficial effect of the utility model is: the utility model has replaced diesel motor with DC motor; Drive oil pump by DC motor and supply hydraulic oil for each operating unit; With power driven system and effective and reasonable the combining of hydraulic efficiency pressure system, reduced use and maintenance cost greatly, the more important thing is that the electric energy with cleaning has replaced diesel oil; Do not had the discharging of tail gas, had stronger environment-friendly advantage.
The Direct Current Governor System of the utility model is through given as speed of efp and hand throttle dual mode; Realize infinite speed variation; And be provided with the constant speed function of cruising, and can motor speed be remained on the preceding speed of locking a key, alleviated the degree of fatigue of operating personal; Reduce unnecessary velocity variations simultaneously, can save the energy.The load adjustment system with so that the horsepower output of said DC motor and said hydraulic efficiency pressure system are mated, can prevent to suppress car by the pivot angle of first controller according to the said oil pump of information Control of said Direct Current Governor System.Display system can show the information of above each system; The work and the condition of service of convenient driving and service personnel monitoring and inquiry car load; Be convenient to find in advance potential faults, improved the serviceability and the safety of hoisting crane greatly, and used easy and simple to handle.
DC speed regulator connects source of AC through current colector in the utility model, and current colector is fixed on the swivel coupling of delivery hydraulic pressure oil, rotates with swivel coupling, has so just avoided the winding of cable and electric wire, has improved safety performance.
The Starting mode of the said system of the utility model is the key Starting mode, is divided into three retainings, and a retaining is used for sending to control system; Two retainings are used for sending to DC speed regulator; Three retainings are used to start DC speed regulator, drive DC machine work, have so just avoided car load equipment to start electric current, the voltge surge that causes simultaneously; Prolonged the service life of equipment and power supply, can make chaufeur before work, fully understand equipment state simultaneously again.
In sum, the use of the said crawler crane electro hydraulic system of the utility model can reduce the working service cost of hoisting crane greatly, reduces environmental pollution; Hoisting crane reliability of operation and safety have been improved; Easy and simple to handle, alleviated driver's degree of fatigue, improved work efficiency.The successful development of this system has been filled up a domestic blank in this field, has very high promotional value.
Description of drawings
Fig. 1 is the structural representation of the utility model lower frame part;
Fig. 2 is the structural representation of the utility model upper frame part;
Fig. 3 is the utility model integral structure scheme drawing;
Fig. 4 is the utility model control system structured flowchart;
Among the figure: 1, cable drum, 2, current colector, 3, DC motor, 4, coupler, 5, oil pump, 6, lifting mechanism, 7, luffing mechanism, 8, swing type mechanism, 9, traveling gear, 10, swivel coupling.
The specific embodiment
Shown in Fig. 1, Fig. 2 and Fig. 3 are common; The crawler crane electro hydraulic system; Comprise Direct Current Governor System, load adjustment system, hydraulic efficiency pressure system and telltale; Said Direct Current Governor System comprises DC speed regulator, and said DC speed regulator connects DC motor 3, and said DC motor 3 connects the oil pump 5 that is used to said hydraulic efficiency pressure system confession hydraulic oil; Said hydraulic efficiency pressure system is connected with lifting mechanism, luffing mechanism, swing type mechanism, traveling gear and each oil cylinder of said crawler crane.The input end of said DC speed regulator connects the mouth of current colector 2, and the input end of said current colector 2 is through the cable connection source of AC.
The 380V external AC power supply is linked on the current colector 2 through cable; Cable between source of AC and the current colector 2 is wrapped on the cable drum 1 of hoisting crane bottom; Current colector 2 is to be fixed on the central swivel coupling 10, with swivel coupling 10 revolutions, realizes driven in synchronism; The cable connection of current colector 2 mouths is positioned at the DC speed regulator and the control system of getting on the bus; DC speed regulator connects DC motor 3, and DC motor 3 links together through coupler 4 and oil pump 5, and it is that each actuating unit supplies hydraulic oil that startup DC motor 3 drives oil pump 5 immediately; The hydraulic oil of upper frame part is Driving Lifting Mechanism 6, luffing mechanism 7 and swing type mechanism 8 respectively, and the hydraulic oil of lower frame part drives traveling gear 9 through central swivel coupling.
As shown in Figure 4, said DC speed regulator connects the speed feedback device of efp, said first controller and said DC motor 3.Said speed feedback device is a tachogenerator.Pass through the total wire joint of serial communication interface between said first controller and the DC speed regulator.Said hydraulic efficiency pressure system comprises second controller that is used to control each hydraulic valve, the said second controller coupling torque killer, sensor, operating handle, input and output mould and each hydraulic valve.Pass through the total wire joint of a CAN (controller local area network) between said second controller, limiter of moment and the input/output module.Pass through the total wire joint of the 2nd CAN between said first controller, second controller, telltale and the operating handle.
Direct Current Governor System adopts DC speed regulator driving DC motor 3 to drag oil pump 5 and for hydraulic efficiency pressure system power is provided; The speed of DC motor 5 is controlled through DC speed regulator; Mode of speed control adopts two closed loop continuous speed regulation systems of electric current loop and speed ring; Feedback speed signal is provided by speed feedback device, and the utility model medium velocity positioner is a tachogenerator, also can realize the feedback of speed through rotary encoder; Current feedback signal is the armature current of the DC motor 5 that directly records.The given signal of speed mainly contains foot throttle and manual accelerator provides, and foot throttle adopts the general normal efp that adopts in the engine system, and efp is fed to DC speed regulator system with the velocity setting signal after through corresponding conversion circuit; Trample the rotating speed that throttle is regulated electrical motor through the operator; The step-less adjustment of realization speed, simultaneously the utility model has also been set up manual accelerator, is provided with on the control handle of hoisting crane that speed keeps, speed increases, speed reduces button; Control handle inserts first controller; Be transferred to DC speed regulator after the speed setting signal conversion that first controller transmits control handle, control the speed adjustment of DC motor, and can be through speed keep realizing the cruising function of constant speed; Manual accelerator is easy to operate, and can alleviate operator's fatigue.Through this double loop system moment of torsion and the rotating speed at control motor accurately.
Load control system is also accomplished through first controller; The size that closed loop control system is come real-time regulated oil pump pivot angle that the difference of actual speed and the given rotating speed of first controller through the DC motor 5 that collects is formed prevents the car of suppressing of DC motor 5.
First controller disposes serial communication interface and CAN EBI simultaneously, and serial communication interface is the RS485 EBI.Pass through the total wire joint of RS485 between DC speed regulator, electrical network measuring device and first controller; First controller is forwarded to other controller on the CAN bus through the CAN bus after the parameter of the operational factor of the DC motor that obtains 5 and electrical network is handled again, and first controller is that parameter after will handling through the 2nd CAN bus is transmitted to second controller in the utility model.
The electrical network parameter measuring device is used for measuring all kinds of parameters in the electrical network, for example voltage, electric current, power, power factor etc., and the parameter that records passed to first controller through the RS485 bus.
First controller is also controlled the loose work of motor of oil, and the temperature of the hydraulic oil that records according to the hydraulic fluid temperature sensor is controlled the loose work of electrical motor of oil.
Hydraulic control system mainly is made up of second controller and input/output module, telltale, handle, limiter of moment etc.Second controller and input/output module mainly are used for connecting the input of sensor, limit switch, alarm switch, and simultaneously second controller is accepted operation information and coupling system logical program that handle transmits through the 2nd CAN bus and come the hydraulic valve of controlled hydraulic system to accomplish the action of system.Limiter of moment draws relevant moment information according to the correlation data calculation that pulling force and angular transducer transmit; Like current angle, amplitude, moment percentum etc.; And the moment information that calculates sent to second controller; To hoisting crane safety guard-safeguard is provided, and can cuts off the action of dangerous direction.Pass through a CAN bus communication between second controller, input/output module and the limiter of moment.
Telltale shows electric network information, the information of DC motor 5, hydraulic efficiency pressure system information, moment information that first controller and second controller send through the 2nd CAN bus and first controller and the second controller communication.Electric network information comprises system voltage, electric current, power factor etc.; The information of DC motor 5 comprises armature voltage, electric current, rotating speed etc.; Hydraulic efficiency pressure system information comprises hydraulic fluid temperature, pressure etc.; Moment information comprises load information, moment percentum etc.The unification of each several part information is presented on the indicator screen, handled easily maintainer monitoring and inquiry.
The whole control system uses direct current 24V as power supply, and direct current 24V power supply is converted to alternating current through the AC-DC power transfer module, and this power line voltage is stable, high efficiency.
The Starting mode of said electro hydraulic system adopts the key Starting mode, comprises being used for sending an electric retaining, being used for sending two retainings of electricity and beginning ability and three retainings that are used to start said DC speed regulator to said DC speed regulator to said control system.One retaining send to control system; Can beat to two retainings after the electric network information that shows after device to be shown starts is errorless; Two retainings send electricity and the beginning can DC speed regulator to DC speed regulator, return on the device to be shown can beat after the normal DC speed regulator information to three retainings to start DC speed regulators, and three retainings are for starting DC speed regulator; DC speed regulator starts back DC motor 3 starts working key self-return to two retaining.So promptly avoided car load equipment to start electric current, the voltge surge that causes simultaneously, in the service life of prolongation equipment and power supply, can make the operator before work, fully understand equipment state simultaneously again.
Be provided with refrigeration air-conditioner in the hoisting box and heat heater unit, handled easily is elegant in appearance, and can normally use under the electrical motor situation about not starting, and improves the working environment in the operator's compartment greatly.
The said crawler crane electro hydraulic system of the utility model at present successful Application arrived on the 120t crawler crane, filled up domestic blank in this technical field.
The utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within the protection domain of the utility model.
Claims (10)
1. crawler crane electro hydraulic system; It is characterized in that: comprise Direct Current Governor System, load adjustment system, hydraulic efficiency pressure system and telltale; Said Direct Current Governor System comprises DC speed regulator; Said DC speed regulator connects DC motor, and said DC motor connects the oil pump that is used to said hydraulic efficiency pressure system confession hydraulic oil; Said hydraulic efficiency pressure system is connected with lifting mechanism, luffing mechanism, swing type mechanism, traveling gear and each oil cylinder of said crawler crane.
2. crawler crane electro hydraulic system according to claim 1 is characterized in that: said load adjustment system comprises first controller that is used to regulate said oil pump pivot angle.
3. crawler crane electro hydraulic system according to claim 2 is characterized in that: said DC speed regulator connects the speed feedback device of efp, manual accelerator, said first controller and said DC motor.
4. crawler crane electro hydraulic system according to claim 3 is characterized in that: said speed feedback device is a tachogenerator.
5. crawler crane electro hydraulic system according to claim 3 is characterized in that: pass through the total wire joint of serial communication interface between said first controller and the DC speed regulator.
6. crawler crane electro hydraulic system according to claim 5; It is characterized in that: said hydraulic efficiency pressure system comprises second controller that is used to control each hydraulic valve, the said second controller coupling torque killer, sensor, operating handle, input and output mould and each hydraulic valve.
7. crawler crane electro hydraulic system according to claim 6 is characterized in that: pass through the total wire joint of a CAN between said second controller, limiter of moment and the input/output module.
8. crawler crane electro hydraulic system according to claim 7 is characterized in that: pass through the total wire joint of the 2nd CAN between said first controller, second controller, telltale and the operating handle.
9. crawler crane electro hydraulic system according to claim 1; It is characterized in that: the input end of said DC speed regulator connects the mouth of current colector; Said current colector is connected with the swivel coupling that is used for delivery hydraulic pressure oil, and the input end of said current colector is through the cable connection source of AC.
10. crawler crane electro hydraulic system according to claim 1; It is characterized in that: said electro hydraulic system also comprises key control branch road, and said key control branch road comprises and is used for sending one of electricity to keep off, be used for sending two retainings of electricity and three retainings that are used to start said DC speed regulator to said DC speed regulator to said control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203416909U CN202245777U (en) | 2011-09-13 | 2011-09-13 | Electric hydraulic system for crawler crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203416909U CN202245777U (en) | 2011-09-13 | 2011-09-13 | Electric hydraulic system for crawler crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202245777U true CN202245777U (en) | 2012-05-30 |
Family
ID=46107051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203416909U Withdrawn - After Issue CN202245777U (en) | 2011-09-13 | 2011-09-13 | Electric hydraulic system for crawler crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202245777U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311048A (en) * | 2011-09-13 | 2012-01-11 | 特雷克斯拓能（山东）重机制造有限公司 | Electro-hydraulic system for crawler crane |
| CN111452629A (en) * | 2020-04-14 | 2020-07-28 | 厦门威迪思汽车设计服务有限公司 | Complete vehicle control method for pure electric engineering mechanical vehicle |
-
2011
- 2011-09-13 CN CN2011203416909U patent/CN202245777U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311048A (en) * | 2011-09-13 | 2012-01-11 | 特雷克斯拓能（山东）重机制造有限公司 | Electro-hydraulic system for crawler crane |
| CN102311048B (en) * | 2011-09-13 | 2013-09-18 | 特雷克斯拓能（山东）重机制造有限公司 | Electro-hydraulic system for crawler crane |
| CN111452629A (en) * | 2020-04-14 | 2020-07-28 | 厦门威迪思汽车设计服务有限公司 | Complete vehicle control method for pure electric engineering mechanical vehicle |
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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: 20120530 Effective date of abandoning: 20130918 |
|
| RGAV | Abandon patent right to avoid regrant |