CN207986549U - A kind of crane autobalance and force balance system - Google Patents
A kind of crane autobalance and force balance system Download PDFInfo
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- CN207986549U CN207986549U CN201721645151.8U CN201721645151U CN207986549U CN 207986549 U CN207986549 U CN 207986549U CN 201721645151 U CN201721645151 U CN 201721645151U CN 207986549 U CN207986549 U CN 207986549U
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- 239000007788 liquid Substances 0.000 claims description 10
- 239000010705 motor oil Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 9
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- 239000000725 suspension Substances 0.000 description 9
- 230000007704 transition Effects 0.000 description 7
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Abstract
A kind of crane autobalance and balance system is forced, sets that there are two span winches, respectively left side span winch and right side span winch altogether；Left side span winch and right side span winch include two the second fixed displacement motors, the oil inlet pipe of two the second fixed displacement motors of left side span winch is connected to by third cylinder manifold, 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；The oil inlet pipe of two the second fixed displacement motors of right side span winch is connected to by the 5th cylinder manifold, 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；It is equipped with the first logical valve between third cylinder manifold and the 5th cylinder manifold, the second logical valve is equipped between the 4th cylinder manifold and the 6th cylinder manifold.It is connected to by cylinder manifold between left side span winch and the second fixed displacement motor of right side span winch, logical valve is equipped between the cylinder manifold of both sides, logical valve can be consistent with the oil pressure of adjust automatically both sides span winch.
Description
Technical field
The utility model is related to the crane autobalance of crane, especially shipping work and force balance system.
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.The arm support of goliath is by generally by a left side
Side span winch and right side span winch co- controlling need left side span winch higher synchronous with right side span winch at this time
Property.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of crane dynamic balancing and balance system is forced, it can be real
Existing left side span winch is balanced with the autobalance of right side span winch and pressure.
In order to solve the above technical problems, the technical solution of the utility model is：
A kind of crane autobalance and balance system is forced, including PLC automatic control system, emergent manual system, used
In the changing-breadth system of driving span winch, the main hoisting system for driving main hoister winch, for driving secondary main hoister winch
The main hoisting system of pair, the rotary system for driving swing mechanism, main motor, main pump and hydraulic oil container, the main motor drives
Dynamic main pump, the main pump are connected with hydraulic tank, and the main oil feed line that the main pump output end is formed passes through hydraulic control proportional multi-path
Valve is logical to changing-breadth system, main hoisting system, secondary main hoisting system and rotary system fuel feeding, the PLC automatic control system respectively
Cross electric proportional pressure-reducing valve group control hydraulic control proportional multi-way valve；The emergent manual system includes the emergency pump being connected with hydraulic tank
Group and hydraulic handle, emergency pump set control changing-breadth system, main hoisting system, secondary main hoisting system and revolution by hydraulic handle and are
System；
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；
Span winch, respectively left side span winch and right side span winch there are two being set altogether on revolving platform；Left side
Span winch and right side span winch include two the second fixed displacement motors, two the second fixed displacement motors of left side span winch
Oil inlet pipe is connected to by third cylinder manifold, and the oil return pipe of two the second fixed displacement motors of left side span winch passes through the 4th cylinder manifold
Connection；The oil inlet pipe of two the second fixed displacement motors of right side span winch is connected to by the 5th cylinder manifold, right side span winch
The oil return pipe of two the second fixed displacement motors is connected to by the 6th cylinder manifold；First is equipped between third cylinder manifold and the 5th cylinder manifold
Logical valve is equipped with the second logical valve between the 4th cylinder manifold and the 6th cylinder manifold.
As an improvement, the PLC automatic control system detects main hoister winch by encoder respectively, secondary main raising twists
The rotating speed of vehicle, span winch and swing mechanism.
As an improvement, PLC automatic control system is by obtaining main hoister winch, secondary main hoister winch, span winch and returning
After the rotating speed of rotation mechanism, main hoister winch, secondary main hoister winch, change are corrected by electric proportional pressure-reducing valve and hydraulic control proportional multi-way valve
The rotating speed of width winch and swing mechanism.
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, further including emergent halt system and safety system, emergent halt system monitoring main motor is simultaneously controlled
The proportional current that PLC automatic control system processed exports electric proportional pressure-reducing valve, PLC automatic control system monitor the liquid of hydraulic oil container
Position, temperature and filter.
As an improvement, electric control handle controls electric proportional pressure-reducing valve group by PLC automatic control system.
Subtract as an improvement, the rotary system includes the first fixed displacement motor of two drive revolving platforms, the first electric ratio
Pressure valve and revolution multi-way valve, the input for turning round multi-way valve terminate main oil feed line, and the output end for turning round multi-way valve is supplied by left-hand
Oil pipe is connected respectively at two the first fixed displacement motors, turns round the output end of multi-way valve by dextrad fuel feed pump respectively at two first
Fixed displacement motor connects, the first electric proportional pressure-reducing valve by two the first shuttle valves control revolution multi-way valves to left-hand fuel feed pump or
Dextrad fuel feed pump fuel feeding is equipped with the balanced valve of balance oil pressure between the left-hand fuel feed pump and dextrad fuel feed pump；Described first is fixed
It measures motor and is furnished with the first fixed displacement motor braking mechanism, for the public oil circuit that brakes to the first fixed displacement motor braking mechanism fuel feeding, brake is public
Oil circuit is equipped with speed governing valve and the first pilot operated directional control valve altogether, and second is equipped between the left-hand oil feed line and dextrad oil feed line
Shuttle valve is connected between second shuttle valve and the first pilot operated directional control valve.
As an improvement, the main hoisting system includes the first variable displacement motor for driving main hoister winch, main oil feed line to
First variable displacement motor fuel feeding, the first variable displacement motor are connected with hydraulic tank by main oil return line；First variable displacement motor is matched
There are the first variable displacement motor braking mechanism, the oil inlet end of the first variable displacement motor to control the second pilot operated directional control valve by third shuttle valve, stop
The public oil circuit of vehicle is by the second pilot operated directional control valve and the first sequence valve to the first variable displacement motor braking mechanism fuel feeding；It is single equipped with first
In parallel with the first sequence valve to valve, the oil return of the first variable displacement motor passes through the first check valve, the first normally opened ball valve and the first electromagnetism
Valve oil return.
As an improvement, the main hoisting system of pair includes the second variable displacement motor for driving secondary main hoister winch, the second electric ratio
The input of example pressure reducing valve and 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 is by rising
Fuel feed pump is risen connect with the second variable displacement motor respectively, the output end of auxiliary hook multi-way valve by decline fuel feed pump respectively with the second variable
Motor connects, and the described second electric proportional pressure-reducing valve controls auxiliary hook multi-way valve to raising fuel feed pump or decline by two the 4th shuttle valves
Fuel feed pump fuel feeding；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
5th shuttle valve controls third pilot operated directional control valve, and the public oil circuit that brakes is become by third pilot operated directional control valve and the second sequence valve to second
Measure motor brake 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 second
Check valve, the second normally opened ball valve and second solenoid valve oil return.
The utility model autobalance and the control method for forcing balance system：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.
Caused advantageous effect is the utility model compared with prior art：
1, the utility model can both realize that main hoister winch, secondary main hoister winch, luffing were twisted by PLC automatic control system
Automatically controlling for vehicle and swing mechanism, can also switch to the MANUAL CONTROL mode of hydraulic handle, the safety of hydraulic system is more
Height, better reliability；
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 Tthe utility model system frame diagram.
Fig. 2 is Tthe utility model 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 the utility model electronically controlled circuit 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 autobalance and pressure balance system comprising PLC automatic control system is met an urgent need manually
System, the changing-breadth system for driving span winch, the main hoisting system for driving main hoister winch, for driving secondary lead
Rise the main hoisting system of pair, the rotary system for driving swing mechanism, main motor, main pump and the hydraulic oil container of winch.This implementation
Example is equipped with altogether four main motors and eight main pumps, and each main motor drives two main pumps to form a driving, the main pump with
Hydraulic oil container connects, 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-path
Valve is respectively to changing-breadth system, main hoisting system, secondary main hoisting system and rotary system fuel feeding.Electric control handle is controlled automatically by PLC
The electric proportional pressure-reducing valve group of system control processed, and then hydraulic control proportional multi-way valve is controlled, realization automatically controls main hoister winch, pair is led
Rise 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 controls turn round multi-way valve H17/9 to left-hand fuel feed pump or dextrad fuel feed pump fuel feeding, institute
State the balanced valve S02 that balance oil pressure is equipped between left-hand fuel feed pump and dextrad fuel feed pump.The first fixed displacement motor S01 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 H22 and the first pilot operated directional control valve W04/6 is equipped with the second shuttle between the left-hand oil feed line and dextrad oil feed line
Valve is connected between second shuttle valve and the first pilot operated directional control valve W04/6.The working method of swing mechanism：When needs drive back
When rotation mechanism 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 its to
First shuttle valve H10/26 or H10/27 fuel feeding, and then change the valve position situation of revolution multi-way valve H17/9, it is supplied eventually by left-hand
Oil pipe line or dextrad oil feed line carry out fuel feeding, when left-hand oil feed line fuel feeding, indicate that the first fixed displacement motor turns left, dextrad fuel feeding
When pipeline fuel feeding, 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 quantitative horse
Up to S01；Furthermore it is possible to by speed governing valve H22 control brake oil pressure, change the speed of the first fixed displacement motor S01.When first quantitative
When motor draining, 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 controls the second pilot operated directional control valve H04/1 by third shuttle valve H10/13, and 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 is finally returned by the first normally opened ball valve H23/1 and the first solenoid valve W03/1
Oil, at this time first the first variable displacement motor of variable displacement motor braking mechanism pair brake.If flowing into the oil mass of the first variable displacement motor
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 the sequences of third pilot operated directional control valve W04/3 and second
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, the
The oil return of two variable displacement motors passes through the second check valve W06/3, the second normally opened ball valve H23/3 and second solenoid valve W03/3 oil returns.
Two second variable displacement motors in left side are connected to the oil inlet pipe of two second variable displacement motors on right side by the 7th cylinder manifold, left side
Two the second variable displacement motors be connected to by the 8th cylinder manifold with the oil return pipe of two second variable displacement motors on right side.Normal fuel injection
When, the 5th shuttle valve H10/18 obtains oil pressure from oil feed line, is given by third pilot operated directional control valve W04/3, the second sequence valve W05/3
Second variable displacement motor braking mechanism fuel feeding, makes it start and leaves the second variable displacement motor；When the second variable displacement motor pressure release, second
The hydraulic oil of variable displacement motor braking mechanism passes through the second sequence valve W05/3 or the second check valve W06/3, and it is normally opened finally to pass through second
Ball valve H23/3 and second solenoid valve W03/3 carry out oil return, and second the second variable displacement motor of variable displacement motor braking mechanism pair carries out at this time
Braking.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
The oil inlet pipe of two the second fixed displacement motors of span winch is connected to by third cylinder manifold FL2/7, two of left side span winch
The oil return pipe of second fixed displacement motor passes through the 4th cylinder manifold FL2/8 connections；Two the second fixed displacement motors of right side span winch
Oil inlet pipe passes through the 6th by the 5th cylinder manifold FL2/9 connections, the oil return pipe of two the second fixed displacement motors of right side span winch
Cylinder manifold FL2/10 connections；Between third cylinder manifold FL2/7 and the 5th cylinder manifold FL2/9 be equipped with the first logical valve B03/2, the 4th
The second logical valve B03/1 is equipped between cylinder manifold FL2/8 and the 6th cylinder manifold FL2/10.Left side span winch and right side luffing
It is connected to by cylinder manifold between second fixed displacement motor of winch, logical valve is equipped between the cylinder manifold of both sides, logical valve can be certainly
The oil pressure of dynamic adjustment both sides span winch is consistent, more stable when making crane amplitude variation；If left and right sides span winch can not
When autobalance, turn off logical valve, forces both sides to balance using hydraulic handle.When the second fixed displacement motor pressure release, second is quantitative
The hydraulic oil of motor brake mechanism passes through third sequence valve W05/4 or third check valve W06/4, finally passes through the normally opened ball valve of third
H23/3 and third solenoid valve W03/4 carry out oil return, at this time second the second fixed displacement motor system of fixed displacement motor braking mechanism pair
It is dynamic.
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 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
Hydraulic handle and electric proportional pressure-reducing valve between auxiliary hook multi-way valve controlled by the 8th shuttle valve, and then supplied to the second variable displacement motor
Oil；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 it is fixed to control second
Measure motor；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 controls the
A certain amount of motor.
As shown in Figure 1, further including emergent halt system and safety system, emergent halt system monitoring main motor is simultaneously controlled
The proportional current that PLC automatic control system processed exports electric proportional pressure-reducing valve, PLC automatic control system monitor the liquid of hydraulic oil container
Position, temperature and filter.After emergent halt system and safety system detect exception, PLC automatic control system is blocked
To the signal of electric proportional pressure-reducing valve group, it can control hydraulic control proportional multi-way valve by hydraulic handle at this time and crane is grasped
Control.
As shown in Figure 1, cooling system is connected with hydraulic oil container, the oil return of the draining, multi-way valve of main pump, the draining of oil motor
Oil return with control valve carries heat, and cooling system can cool down the deep fat of hydraulic oil container, ensures that hydraulic pressure hydraulic system is long
The stability of phase work.
The crane further includes electric-control system, as shown in figure 9, the electric-control system includes control cabinet, left-handed opening case face
Plate, right switch box panel, driver's cabin transition junction box, hydraulic oil container junction box, arm transition junction box and moment instrument mainframe box；
Control cabinet is connect with left-handed opening case panel, right switch box panel, moment instrument mainframe box and driver's cabin transition junction box respectively, is driven
Transition junction box in room connect with hydraulic oil container junction box, and hydraulic oil container junction box connect with arm transition junction box；Control cabinet to
PLC display screens drive room illumination lamp, exhaust fan, air conditioner, the power supply of driver's cabin socket；Left-handed opening case panel controls front window rain
Curette, roof window wiper and water jet；Moment instrument mainframe box is powered to sensor；Control cabinet by driver's cabin transition junction box to
Encoder, limit switch power supply；Hydraulic oil container junction box control, pressure difference switch, electric proportional pressure-reducing valve, limit switch and electromagnetism
Valve；Headlamp on the used ballast control arm of arm transition junction box.
Claims (10)
1. a kind of crane autobalance and pressure balance system, it is characterised in that：Including PLC automatic control system, emergent hand
Dynamic system, the changing-breadth system for driving span winch, the main hoisting system for driving main hoister winch, for driving secondary master
The main hoisting system of pair, the rotary system for driving swing mechanism, main motor, main pump and the hydraulic oil container of hoister winch, it is described
Main motor drives main pump, the main pump to be connected with hydraulic tank, and the main oil feed line that the main pump output end is formed passes through hydraulic control
Proportional multi-way valve is controlled to changing-breadth system, main hoisting system, secondary main hoisting system and rotary system fuel feeding, the PLC automatically respectively
System processed controls hydraulic control proportional multi-way valve by electric proportional pressure-reducing valve group；The emergent manual system includes being connected with hydraulic tank
Emergency pump set and hydraulic handle, emergency pump set pass through hydraulic handle and control changing-breadth system, main hoisting system, secondary main hoisting system
And rotary system；
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；
Span winch, respectively left side span winch and right side span winch there are two being set altogether on revolving platform；Left side luffing
Winch and right side span winch include two the second fixed displacement motors, the oil inlet of two the second fixed displacement motors of left side span winch
Pipe is connected to by third cylinder manifold, and the oil return pipe of two the second fixed displacement motors of left side span winch is connected by the 4th cylinder manifold
It is logical；The oil inlet pipe of two the second fixed displacement motors of right side span winch is connected to by the 5th cylinder manifold, and the two of right side span winch
The oil return pipe of a second fixed displacement motor is connected to by the 6th cylinder manifold；It is patrolled equipped with first between third cylinder manifold and the 5th cylinder manifold
Valve is collected, the second logical valve is equipped between the 4th cylinder manifold and the 6th cylinder manifold.
2. a kind of crane autobalance according to claim 1 and pressure balance system, it is characterised in that：The PLC
Automatic control system detects turning for main hoister winch, secondary main hoister winch, span winch and swing mechanism by encoder respectively
Speed.
3. a kind of crane autobalance according to claim 2 and pressure balance system, it is characterised in that：PLC is automatic
After control system is by obtaining main hoister winch, secondary main hoister winch, span winch and the rotating speed of swing mechanism, pass through electric ratio
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.
4. a kind of crane autobalance according to claim 1 and pressure balance system, it is characterised in that：The liquid of main hook
It presses and 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；It is secondary
Auxiliary hook multi-way valve is controlled by the 8th shuttle valve between the hydraulic handle of hook and electric proportional pressure-reducing valve, and then is supplied to the second variable displacement motor
Oil；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 it is fixed to control second
Measure motor；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 controls the
A certain amount of motor.
5. a kind of crane autobalance according to claim 1 and pressure balance system, it is characterised in that：It is described secondary main
Hoister winch includes four the second variable displacement motors, and the oil inlet pipe of four the second variable displacement motors is interconnected by the first cylinder manifold,
The oil return pipe of four the second variable displacement motors is interconnected by the second cylinder manifold.
6. a kind of crane autobalance according to claim 1 and pressure balance system, it is characterised in that：Further include answering
Emergency stop locking 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 pressure reducing valve output, PLC automatic control system monitor liquid level, temperature and the filter of hydraulic oil container.
7. a kind of crane autobalance according to claim 1 and pressure balance system, it is characterised in that：Electric control handle
Electric proportional pressure-reducing valve group is controlled by PLC automatic control system.
8. a kind of crane autobalance according to claim 1 and pressure balance system, it is characterised in that：The revolution
System includes the first fixed displacement motor of two drive revolving platforms, the first electric proportional pressure-reducing valve and revolution multi-way valve, turns round multichannel
The input of valve terminates main oil feed line, turns round the output end of multi-way valve by left-hand fuel feed pump respectively at two the first fixed displacement motors
Connection, the output end for turning round multi-way valve are connected by dextrad fuel feed pump respectively at two the first fixed displacement motors, the described first electric ratio
By two the first shuttle valve control revolution multi-way valves to left-hand fuel feed pump or dextrad fuel feed pump fuel feeding, the left-hand supplies example pressure reducing valve
The balanced valve of balance oil pressure is equipped between oil pipe and dextrad fuel feed pump；First fixed displacement motor brakes equipped with the first fixed displacement motor
Mechanism, for the public oil circuit that brakes to the first fixed displacement motor braking mechanism fuel feeding, the public oil circuit that brakes is equipped with speed governing valve and the first liquid
Reversal valve is controlled, the second shuttle valve, second shuttle valve and the first liquid are equipped between the left-hand oil feed line and dextrad oil feed line
It is connected between control reversal valve.
9. a kind of crane autobalance according to claim 1 and pressure balance system, it is characterised in that：The master rises
The system of liter includes driving the first variable displacement motor of main hoister winch, and main oil feed line is to the first variable displacement motor fuel feeding, the first variable
Motor is connected with hydraulic tank by main oil return line；First variable displacement motor is furnished with the first variable displacement motor braking mechanism, the
The oil inlet end of one variable displacement motor controls the second pilot operated directional control valve by third shuttle valve, and the public oil circuit that brakes passes through the second liquid controlled reversing
Valve and the first sequence valve are to the first variable displacement motor braking mechanism fuel feeding；It is in parallel with the first sequence valve equipped with the first check valve, first
The oil return of variable displacement motor passes through the first check valve, the first normally opened ball valve and the first electromagnetic valve oil return.
10. a kind of crane autobalance according to claim 1 and pressure balance system, it is characterised in that：The pair
Main hoisting system 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, pair
The input of hook multi-way valve terminates main oil feed line, the output end of auxiliary hook multi-way valve by raising fuel feed pump respectively with the second variable horse
Up to connection, the output end of auxiliary hook multi-way valve is connect with the second variable displacement motor respectively by declining fuel feed pump, the second electric ratio
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；Second variable
Motor is furnished with the second variable displacement motor braking mechanism, and the oil inlet end of the second variable displacement motor controls third liquid controlled reversing by the 5th shuttle valve
Valve, 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；It is equipped with
Second check valve is in parallel with the second sequence valve, and the oil return of the second variable displacement motor passes through the second check valve, the second normally opened ball valve and
Two electromagnetic valve oil returns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721645151.8U CN207986549U (en) | 2017-11-30 | 2017-11-30 | A kind of crane autobalance and force balance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721645151.8U CN207986549U (en) | 2017-11-30 | 2017-11-30 | A kind of crane autobalance and force balance system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207986549U true CN207986549U (en) | 2018-10-19 |
Family
ID=63804876
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721645151.8U Expired - Fee Related CN207986549U (en) | 2017-11-30 | 2017-11-30 | A kind of crane autobalance and force balance system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207986549U (en) |
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2017
- 2017-11-30 CN CN201721645151.8U patent/CN207986549U/en not_active Expired - Fee Related
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