CN108423552A - A kind of crane frequency-changing control system and control method - Google Patents
A kind of crane frequency-changing control system and control method Download PDFInfo
- Publication number
- CN108423552A CN108423552A CN201711237502.6A CN201711237502A CN108423552A CN 108423552 A CN108423552 A CN 108423552A CN 201711237502 A CN201711237502 A CN 201711237502A CN 108423552 A CN108423552 A CN 108423552A
- Authority
- CN
- China
- Prior art keywords
- valve
- main
- control
- displacement motor
- oil
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
Abstract
A kind of crane frequency-changing control system and control method, including hydraulic system and electric-control system, hydraulic system includes PLC automatic control system, changing-breadth system, controls hydraulic control proportional multi-way valve by electric proportional pressure-reducing valve group with main hoisting system, secondary main hoisting system, rotary system, main motor, main pump and hydraulic oil container, the PLC automatic control system；PLC automatic control system detects the rotating speed of main hoister winch, secondary main hoister winch, span winch and swing mechanism by encoder respectively；The electric-control system includes control cabinet, left-handed opening case panel, right switch box panel, driver's cabin transition junction box, hydraulic oil container junction box, arm transition junction box and moment instrument mainframe box, the control cabinet passes through the right lockset motor of third Frequency Converter Control and right dead rope motor by the left lockset motor of the second Frequency Converter Control and left dead rope motor, the control cabinet.
Description
Technical field
The present invention relates to the crane frequency-changing control systems and control method of crane, especially shipping work.
Background technology
Currently, being typically mounted on the spud leg of various ocean platform around stake formula isolated pillar crane, platform is occupied because it has
Space is small, compact-sized, crane capacity is big, lifts by crane the advantages that radius is remote and is widely used.
Include mainly pedestal, revolving platform, derricking gear and hydraulic system around stake formula isolated pillar crane, revolving platform can turn
Be arranged on pedestal dynamicly, derricking gear is then arranged on revolving platform, the middle part of pedestal and the middle part of revolving platform all there are
Enough spaces enable spud leg to extend there through, in the small-sized formula isolated pillar crane around stake, between revolving platform and pedestal usually
It is connected using pivoting support, is then connected by idler wheel between revolving platform and pedestal in stake formula isolated pillar crane large-scale,
One revolving support ring is set specifically on pedestal, multiple positive roll wheel assemblies and multiple anti-roller groups are set on revolving platform
Part, revolving support ring is clipped between the idler wheel of multiple positive roll wheel assemblies and the idler wheel of multiple anti-roll wheel assemblies, wherein positive roller group
Part is located at turn around above support ring, and anti-roll wheel assembly is located at turn around below support ring, when revolving platform rotates, positive roll wheel assembly
Idler wheel and the idler wheel of anti-roll wheel assembly rolled on the surface of revolving support ring.Existing crane relies primarily on hydraulic system
It is controlled, HYDRAULIC CONTROL SYSTEM precision is low, it is therefore desirable to which electric control operation improves its running precision.
Invention content
Technical problem to be solved by the invention is to provide a kind of crane frequency-changing control system and control methods, improve control
Precision and reliability processed.
In order to solve the above technical problems, the technical scheme is that：A kind of crane frequency-changing control system, including hydraulic pressure
System and electric-control system, hydraulic system include PLC automatic control system, emergent manual system, the change for driving span winch
Width system, the main hoisting system of pair for driving secondary main hoister winch, is used for the main hoisting system for driving main hoister winch
Rotary system, main motor, main pump and the hydraulic oil container of swing mechanism, the main motor is driven to drive main pump, the main pump and liquid
Pressure oil case connects, and the main oil feed line that the main pump output end is formed is by hydraulic control proportional multi-way valve respectively to changing-breadth system, master
Hoisting system, secondary main hoisting system and rotary system fuel feeding, the PLC automatic control system are controlled by electric proportional pressure-reducing valve group
Hydraulic control proportional multi-way valve；The emergent manual system includes the emergency pump set being connected with hydraulic tank and hydraulic handle, emergency pump
Group controls changing-breadth system, main hoisting system, secondary main hoisting system and rotary system by hydraulic handle；
The rotary system includes the first fixed displacement motor of two drive revolving platforms, the first electric proportional pressure-reducing valve and revolution
Multi-way valve, the input for turning round multi-way valve terminate main oil feed line, turn round the output end of multi-way valve by left-hand fuel feed pump respectively at
Two the first fixed displacement motor connections, the output end for turning round multi-way valve are connected by dextrad fuel feed pump respectively at two the first fixed displacement motors
It connects, the described first electric proportional pressure-reducing valve turns round multi-way valves to left-hand fuel feed pump or dextrad fuel feed pump by two the first shuttle valve controls
Fuel feeding is equipped with the balanced valve of balance oil pressure between the left-hand fuel feed pump and dextrad fuel feed pump；First fixed displacement motor is furnished with
First fixed displacement motor braking mechanism, the public oil circuit that brakes are set to the first fixed displacement motor braking mechanism fuel feeding on the public oil circuit that brakes
There are speed governing valve and the first pilot operated directional control valve, the second shuttle valve is equipped between the left-hand oil feed line and dextrad oil feed line, it is described
It is connected between second shuttle valve and the first pilot operated directional control valve；
The main hoisting system includes the first variable displacement motor for driving main hoister winch, and main oil feed line is to the first variable horse
Up to fuel feeding, the first variable displacement motor is connected with hydraulic tank by main oil return line；First variable displacement motor is furnished with the first variable
The oil inlet end of motor brake mechanism, the first variable displacement motor controls the second pilot operated directional control valve by third shuttle valve, and brake public oil circuit
By the second pilot operated directional control valve and the first sequence valve to the first variable displacement motor braking mechanism fuel feeding；Equipped with the first check valve and first
Sequence valve is in parallel, and the oil return of the first variable displacement motor passes through the first check valve, the first normally opened ball valve and the first electromagnetic valve oil return；
The main hoisting system of pair include the second variable displacement motor for driving secondary main hoister winch, the second electric proportional pressure-reducing valve and
The input of auxiliary hook multi-way valve, auxiliary hook multi-way valve terminates main oil feed line, and the output end of auxiliary hook multi-way valve passes through raising fuel feed pump point
It not being connect with the second variable displacement motor, the output end of auxiliary hook multi-way valve is connect with the second variable displacement motor respectively by declining fuel feed pump,
Described second electric proportional pressure-reducing valve controls auxiliary hook multi-way valve to raising fuel feed pump by two the 4th shuttle valves or declines fuel feed pump confession
Oil；Second variable displacement motor is furnished with the second variable displacement motor braking mechanism, and the oil inlet end of the second variable displacement motor passes through the 5th shuttle valve
Third pilot operated directional control valve is controlled, the public oil circuit that brakes is stopped by third pilot operated directional control valve and the second sequence valve to the second variable displacement motor
Mechanism of car fuel feeding；In parallel with the second sequence valve equipped with the second check valve, the oil return of the second variable displacement motor passes through the second check valve,
Two normally opened ball valves and second solenoid valve oil return；
The changing-breadth system includes the second fixed displacement motor for driving span winch, and main oil feed line passes through the second fixed displacement motor
Oil feed line to the second fixed displacement motor fuel feeding, the oil feed line of the second fixed displacement motor is equipped with balanced valve；Described second is quantitative
Motor is furnished with fixed displacement motor braking mechanism, and the oil inlet end of the second fixed displacement motor controls the 4th pilot operated directional control valve by the 6th shuttle valve,
Brake public oil circuit by the 4th pilot operated directional control valve and third sequence valve to the second fixed displacement motor braking mechanism fuel feeding；Equipped with third
Check valve is in parallel with third sequence valve, and the oil return of the second fixed displacement motor passes through third check valve, the normally opened ball valve of third and third electricity
Magnet valve oil return；
The electric-control system includes control cabinet, left-handed opening case panel, right switch box panel, driver's cabin transition junction box, liquid
Pressure oil case junction box, arm transition junction box and moment instrument mainframe box；Control cabinet respectively with left-handed opening case panel, right switch-box face
Plate, moment instrument mainframe box are connected with driver's cabin transition junction box, and driver's cabin transition junction box connect with hydraulic oil container junction box, liquid
Pressure oil case junction box connect with arm transition junction box；Control cabinet is empty to PLC display screens, driving room illumination lamp, exhaust fan, changes in temperature
It adjusts, the power supply of driver's cabin socket；Left-handed opening case panel controls front window wiper, roof window wiper and water jet；Moment instrument mainframe box
It powers to sensor；Control cabinet is powered by driver's cabin transition junction box to encoder, limit switch；Hydraulic oil container junction box is controlled
System, pressure difference switch, electric proportional pressure-reducing valve, limit switch and solenoid valve；On the used ballast control arm of arm transition junction box
Headlamp；The control cabinet hangs people's motor by the first Frequency Converter Control；The control cabinet passes through the second Frequency Converter Control left side
Lockset motor and left dead rope motor, the control cabinet pass through the right lockset motor of third Frequency Converter Control and right dead rope motor；
The PLC automatic control system detects main hoister winch, secondary main hoister winch, span winch by encoder respectively
With the rotating speed of swing mechanism.
As an improvement, being set altogether on revolving platform, there are two main hoister winchs, the respectively main hoister winch in left side and right side
Main hoister winch；Span winch, respectively left side span winch and right side span winch there are two being set altogether on revolving platform.
As an improvement, main hook multi-way valve is controlled by the 7th shuttle valve between the hydraulic handle of main hook and electric proportional pressure-reducing valve,
In turn to the first variable displacement motor fuel feeding；It is more by the 8th shuttle valve control auxiliary hook between the hydraulic handle of auxiliary hook and electric proportional pressure-reducing valve
Road valve, and then to the second variable displacement motor fuel feeding；It is controlled by the 9th shuttle valve between the hydraulic handle of luffing and electric proportional pressure-reducing valve
Luffing multi-way valve, and then control the second fixed displacement motor；Pass through the tenth shuttle valve between the hydraulic handle of revolution and electric proportional pressure-reducing valve
Control revolution multi-way valve, and then control the first fixed displacement motor.
As an improvement, the main hoister winch of pair includes four the second variable displacement motors, the oil inlet of four the second variable displacement motors
Pipe is interconnected by the first cylinder manifold, and the oil return pipe of four the second variable displacement motors is interconnected by the second cylinder manifold.
As an improvement, left side span winch and right side span winch include two the second fixed displacement motors, left side luffing twists
The oil inlet pipe of two the second fixed displacement motors of vehicle is connected to by third cylinder manifold, two the second fixed displacement motors of left side span winch
Oil return pipe be connected to by the 4th cylinder manifold；The oil inlet pipe of two the second fixed displacement motors of right side span winch passes through the 5th confluence
Plate is connected to, and the oil return pipe of two the second fixed displacement motors of right side span winch is connected to by the 6th cylinder manifold；Third cylinder manifold with
It is equipped with the first logical valve between 5th cylinder manifold, the second logical valve is equipped between the 4th cylinder manifold and the 6th cylinder manifold.
As an improvement, the hydraulic system further includes emergent halt system and safety system, halt system prison of meeting an urgent need
The proportional current that control main motor and control PLC automatic control system export electric proportional pressure-reducing valve, PLC automatic control system monitoring
Liquid level, temperature and the filter of hydraulic oil container.
As an improvement, electric control handle controls electric proportional pressure-reducing valve group by PLC automatic control system.
The present invention utilizes frequency control, and PLC automatic control system is by obtaining main hoister winch, secondary main hoister winch, change
After the rotating speed of width winch and swing mechanism, using by electric proportional pressure-reducing valve and hydraulic control proportional multi-way valve correct main hoister winch,
The rotating speed of secondary main hoister winch, span winch and swing mechanism；Using the speed of Frequency Converter Control motor, the multistage of motor is realized
Speed governing.
The beneficial effect of the invention compared with the existing technology is：
1, the present invention can both have been realized by PLC automatic control system main hoister winch, secondary main hoister winch, span winch and
Swing mechanism automatically controls, and can also switch to the MANUAL CONTROL mode of hydraulic handle, the safety higher of hydraulic system can
It is more preferable by property；
2, main hoister winch, secondary main hoister winch, span winch and swing mechanism be by independent HYDRAULIC CONTROL SYSTEM,
Independence is good, and reliability is high；
3, the braking mechanism being arranged may insure the safe operation of crane；
4, PLC automatic control system respectively by encoder detect main hoister winch, secondary main hoister winch, span winch and
The rotating speed of swing mechanism corrects main hoister winch, secondary main hoister winch, change by electric proportional pressure-reducing valve and hydraulic control proportional multi-way valve
The rotating speed of width winch and swing mechanism；
5, it is connected to by cylinder manifold between left side span winch and the second fixed displacement motor of right side span winch, the remittance of both sides
Logical valve is equipped between flowing plate, the oil pressure that logical valve can adjust both sides span winch is consistent, when making crane amplitude variation more
Steadily.
Description of the drawings
Fig. 1 is present hydraulic system frame diagram.
Fig. 2 is present hydraulic system piping diagram.
Fig. 3 is rotary system piping diagram.
Fig. 4 is main hoisting system piping diagram.
Fig. 5 be main hoister winch automatically with manual switching piping diagram.
Fig. 6 is secondary main hoisting system piping diagram.
Fig. 7 is changing-breadth system piping diagram.
Fig. 8 be span winch automatically with manual switching piping diagram.
Fig. 9 is electric-control system electronic device class wiring diagram of the present invention.
Figure 10 is electric-control system electric machinery wiring diagram of the present invention.
Figure 11 is to hang people's motor wiring diagram.
Figure 12 is left dead rope motor wiring diagram.
Figure 13 is right dead rope motor wiring diagram.
Specific implementation mode
A kind of crane is used for ship comprising mechanical part and control section.The mechanical part is inserted on main deck
Spud leg, the swing mechanism for being located on main deck and being sleeved on spud leg, the A-frame, hinged with A-frame that is located on swing mechanism
Arm support, be arranged below arm support top main suspension hook, secondary suspension hook, luffing suspension hook, the main hoister winch for driving main suspension hook,
The main hoister winch of pair for driving secondary suspension hook and the span winch for driving luffing suspension hook.The swing mechanism includes revolution
Supporting arrangement and the revolving platform being located on rotary supporting device；Rotary supporting device and revolving platform are sleeved on spud leg, no
It is contacted with spud leg, therefore the two is not interfere with each other mutually, makes revolving platform and spud leg perfect adaptation, save the space for occupying clamping plate.Institute
The top for stating A-frame is equipped with A-frame pulley blocks, and the top of the arm support is equipped with arm support pulley blocks；On the main hoister winch
It is wound with main hoist rope, main hoist rope is connect after passing through A-frame pulley blocks and arm support pulley blocks with main suspension hook；It is described
Secondary main hoist rope is wound on secondary main hoister winch, after secondary main hoist rope passes through A-frame pulley blocks and arm support pulley blocks
It is connect with secondary suspension hook；Variable-amplitude steel wire rope is wound on the span winch, variable-amplitude steel wire rope passes through A-frame pulley blocks and arm support to slide
It is connect with luffing suspension hook after wheel group.Set there are two main hoister winch altogether on revolving platform, respectively the main hoister winch in left side and
The main hoister winch in right side.It is set altogether on revolving platform there are two span winch, respectively left side span winch and right side luffing twists
Vehicle.
The control section includes hydraulic system, and as shown in Figure 1, 2, the hydraulic control system includes that PLC is automatically controlled
System, emergent manual system, the changing-breadth system for driving span winch, the main hoisting system for driving main hoister winch,
The main hoisting system of pair, the rotary system for driving swing mechanism, main motor, main pump and liquid for driving secondary main hoister winch
Pressure oil case.The present embodiment is equipped with altogether four main motors and eight main pumps, and each main motor drives two main pumps to form a drive
Dynamic, the main pump is connected with hydraulic tank, and to hydraulic oil container oil suction or draining, the main oil feed line that main pump output end is formed passes through
Hydraulic control proportional multi-way valve is respectively to changing-breadth system, main hoisting system, secondary main hoisting system and rotary system fuel feeding.Electric control handle is logical
The electric proportional pressure-reducing valve group of PLC automatic control system control is crossed, and then controls hydraulic control proportional multi-way valve, realization automatically controls main raising
Winch, secondary main hoister winch, span winch and swing mechanism.
As shown in figure 3, the rotary system includes the first fixed displacement motor S01 of two drive revolving platforms, the first electric ratio
Example pressure reducing valve H18/6 and revolution multi-way valve H17/9, the input of revolution multi-way valve H17/9 terminate main oil feed line, turn round multi-way valve
The output end of H17/9 is connect with two the first fixed displacement motor S01 respectively by left-hand fuel feed pump, and revolution multi-way valve H17/9's is defeated
Outlet is connect with two the first fixed displacement motor S01 respectively by dextrad fuel feed pump, and the first electricity proportional pressure-reducing valve H18/6 passes through
Two first shuttle valve H10/26, H10/27 control revolution multi-way valve H17/9 are described to left-hand fuel feed pump or dextrad fuel feed pump fuel feeding
The balanced valve S02 of balance oil pressure is equipped between left-hand fuel feed pump and dextrad fuel feed pump.The first fixed displacement motor S01 is furnished with first
Fixed displacement motor braking mechanism, to the first fixed displacement motor braking mechanism fuel feeding, the public oil circuit that brakes is equipped with to be adjusted the public oil circuit that brakes
Fast valve H22 and the first pilot operated directional control valve W04/6 is equipped with the second shuttle valve between the left-hand oil feed line and dextrad oil feed line,
It is connected between second shuttle valve and the first pilot operated directional control valve W04/6.The working method of swing mechanism：When need drive turn-around machine
When structure turns left or turns right, using the first electric proportional pressure-reducing valve H18/6 of priority acccess control pipeline PCP and PCT control, make it to the first shuttle
Valve H10/26 or H10/27 fuel feeding, and then change the valve position situation of revolution multi-way valve H17/9, eventually by left-hand oil feed line or
Dextrad oil feed line carries out fuel feeding, when left-hand oil feed line fuel feeding, indicates that the first fixed displacement motor turns left, dextrad oil feed line fuel feeding
When, indicate that the first fixed displacement motor is turned right.It is opened by the second shuttle valve the first pilot operated directional control valve of driving W04/6, brake public pipeline
BC1 gives the first fixed displacement motor braking mechanism fuel feeding, the startup of the first fixed displacement motor braking mechanism to leave the first fixed displacement motor S01；Separately
Outside, the speed of the first fixed displacement motor S01 can be changed by speed governing valve H22 control brake oil pressure.When the first fixed displacement motor draining
When, using the effect of balanced valve, the speed of draining is made to slow down, to generate the effect of buffering to swing mechanism.
As shown in figure 4, the main hoister winch fuel feeding of the main hoisting system to the left and right simultaneously, due to the fuel feed pump of both sides
Road is completely identical, and the present embodiment is illustrated with the hydraulic system of the main hoister winch in left side comprising four drives are led
First variable displacement motor W01/1~W01/4 of winch is risen, main oil feed line is become to first respectively by balanced valve W02/1~W02/4
Motor W01/1~W01/4 fuel feeding is measured, first variable displacement motor W01/1~W01/4 is connected with hydraulic tank by main oil return line.
The first variable displacement motor W01/1~W01/4 is furnished with the first variable displacement motor braking mechanism, first variable displacement motor W01/1~W01/4
Oil inlet end the second pilot operated directional control valve H04/1 is controlled by third shuttle valve H10/13, the public oil circuit that brakes is changed by the second hydraulic control
To valve H04/1 and the first sequence valve W05/1 to the first variable displacement motor braking mechanism fuel feeding；Equipped with the first check valve W06/1 and
One sequence valve W05/1 is in parallel, and the oil return of first variable displacement motor W01/1~W01/4 passes through the first check valve W06/1, first normally opened
Ball valve H23/1 and the first solenoid valve W03/1 oil returns.When normal fuel injection, third shuttle valve H10/13 obtains oil pressure from oil feed line, leads to
Cross the second pilot operated directional control valve H04/1, the first sequence valve W05/1 give the first variable displacement motor braking mechanism fuel feeding, make its start and from
Open the first variable displacement motor；When the first variable displacement motor pressure release, the hydraulic oil of the first variable displacement motor braking mechanism is by the first sequence
Valve W05/1 or the first check valve W06/1, finally passes through the first normally opened ball valve H23/1 and the first solenoid valve W03/1 carries out oil return,
First the first variable displacement motor of variable displacement motor braking mechanism pair is braked at this time.If the oil mass for flowing into the first variable displacement motor is few,
Balanced valve opening becomes smaller, and will produce back pressure.
As shown in fig. 6, the main hoisting system of pair includes four the second variable displacement motor W01/9 for driving secondary main hoister winch
~W01/12, the second electricity proportional pressure-reducing valve H18/3 and two auxiliary hooks multi-way valve H17/5, H17/6, auxiliary hook multi-way valve H17/5 are corresponded to
Second variable displacement motor W01/9 and W01/10, auxiliary hook multi-way valve H17/6 correspond to the second variable displacement motor W01/11 and W01/12.Auxiliary hook
The input of multi-way valve H17/5, H17/6 terminate main oil feed line, and the output end of auxiliary hook multi-way valve H17/5, H17/6 are supplied by raising
Oil pipe is connect with second variable displacement motor W01/9~W01/12 respectively, and raising fuel feed pump is equipped with balanced valve A02/1~A02/4, often
A balanced valve corresponds to second variable displacement motor, and the output end of auxiliary hook multi-way valve H17/5, H17/6 are by declining fuel feed pump difference
It is connect with second variable displacement motor W01/9~W01/12.The second electricity proportional pressure-reducing valve H18/3 passes through two the 4th shuttle valve H10/
15, H10/16 controls auxiliary hook multi-way valve to raising fuel feed pump or declines fuel feed pump fuel feeding.The second variable horse W01/9~W01/
12 up to being furnished with the second variable displacement motor braking mechanism, and the oil inlet end of second variable displacement motor W01/9~W01/12 passes through the 5th shuttle valve
H10/18 controls third pilot operated directional control valve W04/3, and the public oil circuit that brakes passes through third pilot operated directional control valve W04/3 and the second sequence valve
W05/3 is to the second variable displacement motor braking mechanism fuel feeding；It is in parallel with the second sequence valve W05/3 equipped with the second check valve W06/3, second
The oil return of variable displacement motor passes through the second check valve W06/3, the second normally opened ball valve H23/3 and second solenoid valve W03/3 oil returns.Left side
Two the second variable displacement motors be connected to by the 7th cylinder manifold with the oil inlet pipe of two second variable displacement motors on right side, the two of left side
A second variable displacement motor is connected to the oil return pipe of two second variable displacement motors on right side by the 8th cylinder manifold.When normal fuel injection,
5th shuttle valve H10/18 obtains oil pressure from oil feed line, by third pilot operated directional control valve W04/3, the second sequence valve W05/3 to the
Two variable displacement motor braking mechanism fuel feeding, make it start and leave the second variable displacement motor；When the second variable displacement motor pressure release, second becomes
The hydraulic oil for measuring motor brake mechanism passes through the second sequence valve W05/3 or the second check valve W06/3, finally passes through the second normally opened ball
Valve H23/3 and second solenoid valve W03/3 carry out oil return, at this time second the second variable displacement motor system of variable displacement motor braking mechanism pair
It is dynamic.If the oil mass for flowing into the second variable displacement motor is few, balanced valve opening becomes smaller, and will produce back pressure.
Span winch, respectively left side span winch and right side span winch there are two being set altogether on revolving platform.Such as Fig. 7
Shown, changing-breadth system includes the second fixed displacement motor B01/1~B01/4, the second fixed displacement motor B01/1 of four drive span winches
~B01/2 corresponds to left side span winch, and second fixed displacement motor B01/3~B01/4 corresponds to right side span winch, the change of the left and right sides
The hydraulic system of width winch is identical, and the present embodiment is illustrated with the hydraulic system of wherein side span winch：Main oil feed line
By the oil feed line of the second fixed displacement motor to second fixed displacement motor B01/1~B01/2 fuel feeding, the second fixed displacement motor B01/1~
The oil feed line of B01/2 is equipped with balanced valve W02/9, W02/10；The second fixed displacement motor B01/1~B01/2 is furnished with second
The oil inlet end of fixed displacement motor braking mechanism, second fixed displacement motor B01/1~B01/2 controls the 4th liquid by the 6th shuttle valve H10/24
Reversal valve W04/4 is controlled, the public oil circuit that brakes is quantitative to second by the 4th pilot operated directional control valve W04/4 and third sequence valve W05/4
Motor brake mechanism fuel feeding；It is in parallel with third sequence valve W05/4 equipped with third check valve W06/4, the second fixed displacement motor B01/1~
The oil return of B01/2 passes through third check valve W06/4, the normally opened ball valve H23/3 of third and third solenoid valve W03/4 oil returns.Left side becomes
The oil inlet pipe of two the second fixed displacement motors of width winch is connected to by third cylinder manifold FL2/7, two of left side span winch the
The oil return pipe of two fixed displacement motors passes through the 4th cylinder manifold FL2/8 connections；Two the second fixed displacement motors of right side span winch into
Oil pipe is converged by the 5th cylinder manifold FL2/9 connections, the oil return pipe of two the second fixed displacement motors of right side span winch by the 6th
Flowing plate FL2/10 connections；The first logical valve B03/2 is equipped between third cylinder manifold FL2/7 and the 5th cylinder manifold FL2/9, the 4th converges
The second logical valve B03/1 is equipped between flowing plate FL2/8 and the 6th cylinder manifold FL2/10.Left side span winch and right side span winch
The second fixed displacement motor between be connected to by cylinder manifold, logical valve is equipped between the cylinder manifold of both sides, logical valve can adjust automatically
The oil pressure of whole both sides span winch is consistent, more stable when making crane amplitude variation；If left and right sides span winch can not be automatic
When balance, turn off logical valve, forces both sides to balance using hydraulic handle.When the second fixed displacement motor pressure release, the second fixed displacement motor
The hydraulic oil of braking mechanism passes through third sequence valve W05/4 or third check valve W06/4, finally passes through the normally opened ball valve H23/ of third
3 and third solenoid valve W03/4 carries out oil return, and second the second fixed displacement motor of fixed displacement motor braking mechanism pair is braked at this time.
As shown in Figure 1, it is equipped with encoder on main hoister winch, secondary main hoister winch, span winch and swing mechanism, institute
It states PLC automatic control system and main hoister winch, secondary main hoister winch, span winch and swing mechanism is detected by encoder respectively
Rotating speed, PLC automatic control system, which passes through, obtains turning for main hoister winch, secondary main hoister winch, span winch and swing mechanism
After speed, main hoister winch, secondary main hoister winch, span winch are corrected by electric proportional pressure-reducing valve and hydraulic control proportional multi-way valve and returned
The rotating speed of rotation mechanism.Under normal condition, electric control handle controls electric proportional pressure-reducing valve group, realization pair by PLC automatic control system
The whole control of crane.
The emergent manual system includes the emergency pump set being connected with hydraulic tank and hydraulic handle, and emergency pump set passes through liquid
Press handle control changing-breadth system, main hoisting system, secondary main hoisting system and rotary system.As shown in Fig. 5,8, the hydraulic pressure hand of main hook
Main hook multi-way valve is controlled by the 7th shuttle valve between handle and electric proportional pressure-reducing valve, and then to the first variable displacement motor fuel feeding；Auxiliary hook
Auxiliary hook multi-way valve is controlled by the 8th shuttle valve between hydraulic handle and electric proportional pressure-reducing valve, and then to the second variable displacement motor fuel feeding；
Luffing multi-way valve is controlled by the 9th shuttle valve between the hydraulic handle of luffing and electric proportional pressure-reducing valve, and then controls the second quantitative horse
It reaches；Revolution multi-way valve is controlled by the tenth shuttle valve between the hydraulic handle of revolution and electric proportional pressure-reducing valve, and then it is fixed to control first
Measure motor.
As shown in Figure 1, the hydraulic system further includes emergent halt system and safety system, halt system prison of meeting an urgent need
The proportional current that control main motor and control PLC automatic control system export electric proportional pressure-reducing valve, PLC automatic control system monitoring
Liquid level, temperature and the filter of hydraulic oil container.After emergent halt system and safety system detect exception, PLC is blocked
Automatic control system gives the signal of electric proportional pressure-reducing valve group, can control hydraulic control proportional multi-way valve by hydraulic handle at this time to rising
Heavy-duty machine is manipulated.
As shown in Figure 1, cooling system is connected with hydraulic oil container, the oil return of the draining of main pump, multi-way valve, oil motor let out
The oil return of oil and control valve carries heat, and cooling system can cool down the deep fat of hydraulic oil container, ensures hydraulic pressure hydraulic system
The stability of long-term work.
As shown in Fig. 9 to 13, the crane further includes electric-control system, and the electric-control system includes control cabinet, left-handed opening
Case panel, right switch box panel, driver's cabin transition junction box, hydraulic oil container junction box, arm transition junction box and moment instrument master
Cabinet；Control cabinet connects with left-handed opening case panel, right switch box panel, moment instrument mainframe box and driver's cabin transition junction box respectively
It connects, driver's cabin transition junction box connect with hydraulic oil container junction box, and hydraulic oil container junction box connect with arm transition junction box；Control
Case processed is powered to PLC display screens, driving room illumination lamp, exhaust fan, air conditioner, driver's cabin socket；Left-handed opening case panel controls
Front window wiper, roof window wiper and water jet；Moment instrument mainframe box is powered to sensor；Control cabinet is connect by driver's cabin transition
Line case is powered to encoder, limit switch；Hydraulic oil container junction box control, pressure difference switch, electric proportional pressure-reducing valve, limit switch and
Solenoid valve；Headlamp on the used ballast control arm of arm transition junction box.The control cabinet passes through the first frequency converter control
System hangs people's motor；The control cabinet is passed through by the left lockset motor of the second Frequency Converter Control and left dead rope motor, the control cabinet
The right lockset motor of third Frequency Converter Control and right dead rope motor.
Claims (8)
1. a kind of crane frequency-changing control system, it is characterised in that：Including hydraulic system and electric-control system, hydraulic system includes
PLC automatic control system, emergent manual system, the changing-breadth system for driving span winch, for driving main hoister winch
Main hoisting system, the main hoisting system of pair, the rotary system for driving swing mechanism, main electricity for driving secondary main hoister winch
Machine, main pump and hydraulic oil container, the main motor drive main pump, the main pump to be connected with hydraulic tank, the main pump output end shape
At main oil feed line by hydraulic control proportional multi-way valve respectively to changing-breadth system, main hoisting system, secondary main hoisting system and revolution
System fuel feeding, the PLC automatic control system control hydraulic control proportional multi-way valve by electric proportional pressure-reducing valve group；It is described emergent manual
System includes the emergency pump set being connected with hydraulic tank and hydraulic handle, emergency pump set by hydraulic handle control changing-breadth system,
Main hoisting system, secondary main hoisting system and rotary system；
The rotary system includes the first fixed displacement motor of two drive revolving platforms, the first electric proportional pressure-reducing valve and revolution multichannel
Valve, the input for turning round multi-way valve terminate main oil feed line, turn round the output end of multi-way valve by left-hand fuel feed pump respectively at two
First fixed displacement motor connects, and the output end for turning round multi-way valve is connected by dextrad fuel feed pump respectively at two the first fixed displacement motors,
Described first electric proportional pressure-reducing valve is supplied by two the first shuttle valve control revolution multi-way valves to left-hand fuel feed pump or dextrad fuel feed pump
Oil is equipped with the balanced valve of balance oil pressure between the left-hand fuel feed pump and dextrad fuel feed pump；First fixed displacement motor is equipped with the
A certain amount of motor brake mechanism, to the first fixed displacement motor braking mechanism fuel feeding, the public oil circuit that brakes is equipped with the public oil circuit that brakes
Speed governing valve and the first pilot operated directional control valve, are equipped with the second shuttle valve between the left-hand oil feed line and dextrad oil feed line, and described the
It is connected between two shuttle valves and the first pilot operated directional control valve；
The main hoisting system includes the first variable displacement motor for driving main hoister winch, and main oil feed line is supplied to the first variable displacement motor
Oil, the first variable displacement motor are connected with hydraulic tank by main oil return line；First variable displacement motor is furnished with the first variable displacement motor
The oil inlet end of braking mechanism, the first variable displacement motor controls the second pilot operated directional control valve by third shuttle valve, and the public oil circuit that brakes passes through
Second pilot operated directional control valve and the first sequence valve are to the first variable displacement motor braking mechanism fuel feeding；Equipped with the first check valve and the first sequence
Valve is in parallel, and the oil return of the first variable displacement motor passes through the first check valve, the first normally opened ball valve and the first electromagnetic valve oil return；
The main hoisting system of pair includes the second variable displacement motor for driving secondary main hoister winch, the second electric proportional pressure-reducing valve and auxiliary hook
Multi-way valve, the input of auxiliary hook multi-way valve terminate main oil feed line, the output end of auxiliary hook multi-way valve by raising fuel feed pump respectively with
Second variable displacement motor connects, and the output end of auxiliary hook multi-way valve is connect with the second variable displacement motor respectively by declining fuel feed pump, described
Second electric proportional pressure-reducing valve controls auxiliary hook multi-way valve to raising fuel feed pump by two the 4th shuttle valves or declines fuel feed pump fuel feeding；Institute
It states the second variable displacement motor and is furnished with the second variable displacement motor braking mechanism, the oil inlet end of the second variable displacement motor passes through the 5th shuttle valve control the
Three pilot operated directional control valves, the public oil circuit that brakes is by third pilot operated directional control valve and the second sequence valve to the second variable displacement motor braking mechanism
Fuel feeding；In parallel with the second sequence valve equipped with the second check valve, the oil return of the second variable displacement motor passes through the second check valve, second normally opened
Ball valve and second solenoid valve oil return；
The changing-breadth system includes the second fixed displacement motor for driving span winch, the confession that main oil feed line passes through the second fixed displacement motor
The oil feed line of oil pipe road direction the second fixed displacement motor fuel feeding, the second fixed displacement motor is equipped with balanced valve；Second fixed displacement motor
Equipped with fixed displacement motor braking mechanism, the oil inlet end of the second fixed displacement motor controls the 4th pilot operated directional control valve, brake by the 6th shuttle valve
Public oil circuit is by the 4th pilot operated directional control valve and third sequence valve to the second fixed displacement motor braking mechanism fuel feeding；It is unidirectional equipped with third
Valve is in parallel with third sequence valve, and the oil return of the second fixed displacement motor passes through third check valve, the normally opened ball valve of third and third solenoid valve
Oil return；
The electric-control system includes control cabinet, left-handed opening case panel, right switch box panel, driver's cabin transition junction box, hydraulic oil
Case junction box, arm transition junction box and moment instrument mainframe box；Control cabinet respectively with left-handed opening case panel, right switch box panel,
Moment instrument mainframe box is connected with driver's cabin transition junction box, and driver's cabin transition junction box connect with hydraulic oil container junction box, hydraulic pressure
Fuel tank junction box connect with arm transition junction box；Control cabinet is empty to PLC display screens, driving room illumination lamp, exhaust fan, changes in temperature
It adjusts, the power supply of driver's cabin socket；Left-handed opening case panel controls front window wiper, roof window wiper and water jet；Moment instrument mainframe box
It powers to sensor；Control cabinet is powered by driver's cabin transition junction box to encoder, limit switch；Hydraulic oil container junction box is controlled
System, pressure difference switch, electric proportional pressure-reducing valve, limit switch and solenoid valve；On the used ballast control arm of arm transition junction box
Headlamp；The control cabinet hangs people's motor by the first Frequency Converter Control；The control cabinet passes through the second Frequency Converter Control left side
Lockset motor and left dead rope motor, the control cabinet pass through the right lockset motor of third Frequency Converter Control and right dead rope motor；
The PLC automatic control system detects main hoister winch, secondary main hoister winch, span winch by encoder respectively and returns
The rotating speed of rotation mechanism.
2. a kind of crane frequency-changing control system according to claim 1, it is characterised in that：It is equipped with altogether on revolving platform
Two main hoister winchs, the respectively main hoister winch in left side and the main hoister winch in right side；Become there are two being set altogether on revolving platform
Width winch, respectively left side span winch and right side span winch.
3. a kind of crane frequency-changing control system according to claim 1, it is characterised in that：The hydraulic handle of main hook and electricity
Main hook multi-way valve is controlled by the 7th shuttle valve between proportional pressure-reducing valve, and then to the first variable displacement motor fuel feeding；The hydraulic pressure hand of auxiliary hook
Auxiliary hook multi-way valve is controlled by the 8th shuttle valve between handle and electric proportional pressure-reducing valve, and then to the second variable displacement motor fuel feeding；Luffing
Luffing multi-way valve is controlled by the 9th shuttle valve between hydraulic handle and electric proportional pressure-reducing valve, and then controls the second fixed displacement motor；It returns
Revolution multi-way valve is controlled by the tenth shuttle valve between the hydraulic handle turned and electric proportional pressure-reducing valve, and then controls the first quantitative horse
It reaches.
4. a kind of crane frequency-changing control system according to claim 1, it is characterised in that：The main hoister winch packet of pair
Four the second variable displacement motors are included, the oil inlet pipe of four the second variable displacement motors is interconnected by the first cylinder manifold, four second changes
The oil return pipe for measuring motor is interconnected by the second cylinder manifold.
5. a kind of crane frequency-changing control system according to claim 2, it is characterised in that：Left side span winch and right side
Span winch includes two the second fixed displacement motors, and the oil inlet pipe of two the second fixed displacement motors of left side span winch passes through third
Cylinder manifold is connected to, and the oil return pipe of two the second fixed displacement motors of left side span winch is connected to by the 4th cylinder manifold；Right side luffing
The oil inlet pipe of two the second fixed displacement motors of winch is connected to by the 5th cylinder manifold, two second quantitative horses of right side span winch
The oil return pipe reached is connected to by the 6th cylinder manifold；The first logical valve is equipped between third cylinder manifold and the 5th cylinder manifold, the 4th converges
The second logical valve is equipped between flowing plate and the 6th cylinder manifold.
6. a kind of crane frequency-changing control system according to claim 1, it is characterised in that：The hydraulic system further includes
Emergent halt system and safety system, halt system of meeting an urgent need monitors main motor and control PLC automatic control system is to electric ratio
The proportional current of example pressure reducing valve output, PLC automatic control system monitor liquid level, temperature and the filter of hydraulic oil container.
7. a kind of crane frequency-changing control system according to claim 1, it is characterised in that：Electric control handle by PLC from
The electric proportional pressure-reducing valve group of autocontrol system control.
8. a kind of control method of crane frequency-changing control system as described in claim 1, it is characterised in that：PLC is controlled automatically
After system processed is by obtaining main hoister winch, secondary main hoister winch, span winch and the rotating speed of swing mechanism, using passing through electric ratio
Example pressure reducing valve and hydraulic control proportional multi-way valve correct the rotating speed of main hoister winch, secondary main hoister winch, span winch and swing mechanism；
Using the speed of Frequency Converter Control motor, the multistep speed regulation of motor is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711237502.6A CN108423552B (en) | 2017-11-30 | 2017-11-30 | A kind of crane frequency-changing control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711237502.6A CN108423552B (en) | 2017-11-30 | 2017-11-30 | A kind of crane frequency-changing control system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108423552A true CN108423552A (en) | 2018-08-21 |
| CN108423552B CN108423552B (en) | 2019-08-13 |
Family
ID=63155847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711237502.6A Active CN108423552B (en) | 2017-11-30 | 2017-11-30 | A kind of crane frequency-changing control system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108423552B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014193A (en) * | 2021-12-03 | 2022-02-08 | 中船华南船舶机械有限公司 | Control method of winch brake system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474763Y (en) * | 2001-04-28 | 2002-01-30 | 徐州重型机械厂 | Crane hydraulic device |
| CN102659030A (en) * | 2012-04-13 | 2012-09-12 | 领新(南通)重工有限公司 | Cooling structure of hydraulic system of loading and unloading crane of bulk carrier |
| JP2015107857A (en) * | 2013-12-04 | 2015-06-11 | 日立住友重機械建機クレーン株式会社 | Winch rotation display device |
| JP2017096215A (en) * | 2015-11-27 | 2017-06-01 | コベルコ建機株式会社 | Hydraulic drive device of working machine |
| CN206511860U (en) * | 2017-03-02 | 2017-09-22 | 郑州新大方重工科技有限公司 | The emergent lowering system of Closed Hydraulic Driving raising elevator |
-
2017
- 2017-11-30 CN CN201711237502.6A patent/CN108423552B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2474763Y (en) * | 2001-04-28 | 2002-01-30 | 徐州重型机械厂 | Crane hydraulic device |
| CN102659030A (en) * | 2012-04-13 | 2012-09-12 | 领新(南通)重工有限公司 | Cooling structure of hydraulic system of loading and unloading crane of bulk carrier |
| JP2015107857A (en) * | 2013-12-04 | 2015-06-11 | 日立住友重機械建機クレーン株式会社 | Winch rotation display device |
| JP2017096215A (en) * | 2015-11-27 | 2017-06-01 | コベルコ建機株式会社 | Hydraulic drive device of working machine |
| CN206511860U (en) * | 2017-03-02 | 2017-09-22 | 郑州新大方重工科技有限公司 | The emergent lowering system of Closed Hydraulic Driving raising elevator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014193A (en) * | 2021-12-03 | 2022-02-08 | 中船华南船舶机械有限公司 | Control method of winch brake system |
| CN114014193B (en) * | 2021-12-03 | 2023-08-18 | 中船华南船舶机械有限公司 | Control method of winch braking system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108423552B (en) | 2019-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108423549B (en) | A kind of crane hydraulic system and working method | |
| CN207986550U (en) | A kind of crane rotation buffer system | |
| CN108423550B (en) | A kind of crane | |
| CN207566748U (en) | A kind of crane brake system | |
| CN207566752U (en) | A kind of crane emergency operations system | |
| CN102788055B (en) | Hydraulic system of wrecker | |
| CN201288030Y (en) | Balanced type energy conservation crane | |
| CN201071264Y (en) | Novel electric hoister | |
| CN207986527U (en) | A kind of crane | |
| CN108423577B (en) | A kind of crane autobalance and force balance system and method | |
| CN201362560Y (en) | Wave compensating device | |
| CN108263971B (en) | A kind of spider shape crawler crane of hydraulic control | |
| CN108423552B (en) | A kind of crane frequency-changing control system and control method | |
| CN207986531U (en) | A kind of crane elimination accumulated error system | |
| CN207986549U (en) | A kind of crane autobalance and force balance system | |
| CN202785345U (en) | Variable load control device for hydraulic slewing crane for ship | |
| CN108423551B (en) | A kind of crane eliminates accumulated error system and eliminates accumulated error method | |
| CN201729582U (en) | Closed hydraulic oil way of hoister | |
| CN113582093A (en) | Luffing and leveling hydraulic control system of cantilever type aerial work platform | |
| CN107605868A (en) | A kind of hydraulic system of crane | |
| CN210884967U (en) | Automatic hook-retracting hydraulic system of straight-arm lorry-mounted crane | |
| CN103693562A (en) | Method, device and system for controlling rope threading winching of hoist, and rope threading equipment | |
| CN104590995B (en) | Full hydraulic control trolley system of bridge crane | |
| JP2000302381A (en) | Elevator of gondola | |
| CN2223287Y (en) | Hydraulic driving hoisting lift winch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |