CN108423577B - A kind of crane autobalance and force balance system and method - Google Patents
A kind of crane autobalance and force balance system and method Download PDFInfo
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- CN108423577B CN108423577B CN201711237382.XA CN201711237382A CN108423577B CN 108423577 B CN108423577 B CN 108423577B CN 201711237382 A CN201711237382 A CN 201711237382A CN 108423577 B CN108423577 B CN 108423577B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/84—Slewing gear
- B66C23/86—Slewing gear hydraulically actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Abstract
A kind of crane autobalance and balance system and method are 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 between left side span winch and the second fixed displacement motor of right side span winch by cylinder manifold, logical valve is equipped between the cylinder manifold of two sides, logical valve can be consistent with the oil pressure of adjust automatically two sides span winch.
Description
Technical field
The present invention relates to the crane autobalance of crane, especially shipping work and force balance system and side
Method.
Background technique
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.
It mainly include pedestal, revolving platform, derricking gear and hydraulic system around stake formula isolated pillar crane, revolving platform can turn
Be arranged dynamicly on the base, derricking gear is then arranged on revolving platform, the middle part of the middle part of pedestal and revolving platform all there are
Enough spaces enable spud leg to extend there through, small-sized in stake formula isolated pillar crane, between revolving platform and pedestal usually
It is connected using pivoting support, large-scale in stake formula isolated pillar crane, is then connected by idler wheel between revolving platform and pedestal,
One revolving support ring is specifically set on the base, 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, in revolving platform rotation, positive roll wheel assembly
Idler wheel and the idler wheel of anti-roll wheel assembly rolled on the surface of revolving support ring.The cantilever crane 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.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of crane dynamic balancing and balance system and method are forced, it can
It realizes the autobalance of left side span winch and right side span winch and forces to balance.
In order to solve the above technical problems, the technical scheme is that
A kind of crane autobalance and balance system is forced, including PLC automatic control system, emergency 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 emergency 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 rotary system includes 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 on the public oil circuit that brakes to the first fixed displacement motor braking mechanism fuel feeding
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
Auxiliary hook multi-way valve, the input of auxiliary hook multi-way valve terminate 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 by two the 4th shuttle valves and supplies to raising fuel feed pump or decline fuel feed pump
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 second one-way valve, the oil return of the second variable displacement motor passes through second one-way valve, the
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,
The public oil circuit that brakes passes through 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；
It is set altogether on revolving platform there are two main hoister winch, the respectively main raising of the main hoister winch in left side and right side twists
Vehicle；Span winch, respectively left side span winch and right side span winch there are two being set altogether on revolving platform；Left side luffing twists
Vehicle 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
It is connected to by third cylinder manifold, 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 two of right side span winch the
The oil return pipe of two fixed displacement motors is connected to by the 6th cylinder manifold；The first logic is equipped between third cylinder manifold and the 5th cylinder manifold
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 passes through respectively, encoder detects main hoister winch, secondary main raising twists
The revolving 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 revolving 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 revolving 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 between the hydraulic handle of luffing and electric proportional pressure-reducing valve by the 9th shuttle 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, the hydraulic system further includes emergency halt system and safety system, emergency halt system prison
The proportional current that control main motor and control PLC automatic control system export electric proportional pressure-reducing valve, PLC automatic control system prison
Control 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.
Autobalance of the present invention and the control method for forcing balance system: the of left side span winch and right side span winch
It is connected between two fixed displacement motors by cylinder manifold, logical valve is equipped between the cylinder manifold of two sides, logical valve can be with adjust automatically two
The oil pressure of side span winch is consistent, more stable when making crane amplitude variation；If left and right sides span winch can not autobalance
When, turn off logical valve, forces both sides to balance using hydraulic handle.
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
The automatic control of swing mechanism can also switch to the MANUAL CONTROL mode of hydraulic handle, and the safety of hydraulic system is higher, 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, high reliablity；
3, the braking mechanism being arranged may insure the safe operation of crane；
4, PLC automatic control system pass through respectively encoder detect main hoister winch, secondary main hoister winch, span winch and
The revolving 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 revolving speed of width winch and swing mechanism；
5, it is connected between left side span winch and the second fixed displacement motor of right side span winch by cylinder manifold, the remittance of two sides
Logical valve is equipped between flowing plate, the oil pressure of the adjustable two sides span winch of logical valve is consistent, when making crane amplitude variation more
Steadily.
Detailed description of the invention
Fig. 1 is present system frame diagram.
Fig. 2 is present 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 electronically controlled circuit diagram of the present invention.
Specific embodiment
A kind of crane is used for ship comprising mechanical part and control section.The mechanical part is inserted on main deck
Spud leg, be located on main deck and cover swing mechanism on spud leg, is the A-frame being located on swing mechanism, hinged with A-frame
Cantilever crane, be arranged in below cantilever crane top main suspension hook, secondary suspension hook, luffing suspension hook, the main hoister winch for driving main suspension hook,
Span winch for driving the main hoister winch of pair of secondary suspension hook and 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 cover 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 combination, 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 cantilever crane is equipped with cantilever crane 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 cantilever crane 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 cantilever crane 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 cantilever crane is sliding
It is connect after wheel group with luffing suspension hook.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, emergency are manual
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 connection, 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, realize that the main hoister winch of automatic control, pair are 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 electric proportional pressure-reducing valve H18/6 of priority acccess control pipeline PCP and PCT control first, 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.The first pilot operated directional control valve W04/6 is driven to open by the second shuttle valve, brake
Public pipeline BC1 gives the first fixed displacement motor braking mechanism fuel feeding, and the first quantitative horse is left in the starting of the first fixed displacement motor braking mechanism
Up to S01；Furthermore it is possible to change the speed of the first fixed displacement motor S01 by speed governing valve H22 control brake oil pressure.When first quantitative
When motor draining, using the effect of balanced valve, slow down the speed of draining, 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 two 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 W 04/1 by third shuttle valve H10/13, and the public oil circuit that brakes passes through the second hydraulic control
Reversal valve W04/1 and the first sequence valve W05/1 are to the first variable displacement motor braking mechanism fuel feeding；Equipped with the first check valve W06/1 with
First 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 often
Opening ball valve H23/1 and the first solenoid valve W03/1 oil return.When normal fuel injection, third shuttle valve H10/13 obtains oil pressure from oil feed line,
The first variable displacement motor braking mechanism fuel feeding is given by the second pilot operated directional control valve W04/1, the first sequence valve W05/1, makes its starting simultaneously
Leave 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 suitable by 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, the first variable displacement motor braking mechanism brakes the first variable displacement motor at this time.If flowing into the oil mass of the first variable displacement motor
Few, balanced valve opening becomes smaller, and can generate 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 correspondence
Second variable displacement motor W01/9 and W01/10, the second variable displacement motor W01/11 and W01/12 of auxiliary hook multi-way valve H17/6 correspondence.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
The output end of corresponding second variable displacement motor of a balanced valve, auxiliary hook multi-way valve H17/5, H17/6 passes through decline 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 decline 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 sequence 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 second one-way valve W06/3, the
The oil return of two variable displacement motors passes through second one-way valve W06/3, the second normally opened ball valve H23/3 and second solenoid valve W03/3 oil return.
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 the oil return pipe of two second variable displacement motors on right side by the 8th cylinder manifold.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, starts it 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 second one-way valve W06/3, finally normally opened by second
Ball valve H23/3 and second solenoid valve W03/3 carries out oil return, and the second variable displacement motor braking mechanism carries out the second variable displacement motor at this time
Braking.If the oil mass for flowing into the second variable displacement motor is few, balanced valve opening becomes smaller, and can generate 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
The corresponding left side span winch of~B01/2, the corresponding right side span winch of second fixed displacement motor B01/3~B01/4, 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 return.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, and two of left side span winch
The oil return pipe of second fixed displacement motor is connected to by the 4th cylinder manifold FL2/8；Two the second fixed displacement motors of right side span winch
Oil inlet pipe is connected to by the 5th cylinder manifold FL2/9, and the oil return pipe of two the second fixed displacement motors of right side span winch passes through the 6th
Cylinder manifold FL2/10 connection；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 between second fixed displacement motor of winch by cylinder manifold, logical valve is equipped between the cylinder manifold of two sides, logical valve can be certainly
The oil pressure of dynamic adjustment two 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 carries out oil return, and the second fixed displacement motor braking mechanism is to the second fixed displacement motor system at this time
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 passes through encoder respectively and detect main hoister winch, secondary main hoister winch, span winch and swing mechanism
Revolving speed, PLC automatic control system is by obtaining 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 revolving 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 emergency 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, main hook it is hydraulic
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；By the tenth shuttle valve control revolution multi-way valve between the hydraulic handle of revolution and electric proportional pressure-reducing valve, and then control the
A certain amount of motor.
As shown in Figure 1, the hydraulic system further includes emergency halt system and safety system, emergency halt system prison
The proportional current that control main motor and control PLC automatic control system export electric proportional pressure-reducing valve, PLC automatic control system prison
Control liquid level, temperature and the filter of hydraulic oil container.After emergency halt system and safety system detect exception, truncation
PLC 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
Crane 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 has heat, and cooling system can be cooling by the hot oil of hydraulic oil container, guarantees hydraulic hydraulic system
The stability of long-term 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, boom 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 boom transition junction box；Control cabinet to
PLC display screen drives 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 boom of boom transition junction box.
Claims (6)
1. a kind of crane autobalance and pressure balance system, it is characterised in that: including PLC automatic control system, emergency 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, and the main pump is 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 passes through electric proportional pressure-reducing valve group and controls hydraulic control proportional multi-way valve；The emergency 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 rotary system includes 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, and the output end for turning round multi-way valve passes through left-hand fuel feed pump respectively at two
The connection of first fixed displacement motor, the output end for turning round multi-way valve are 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
The connection of 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 or decline fuel feed pump fuel feeding by two the 4th shuttle valves；Institute
The second variable displacement motor is stated equipped 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 pass through 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 second one-way valve, the oil return of the second variable displacement motor passes through second one-way 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, and main oil feed line passes through the confession of 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 passes through 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；
Main hoister winch there are two being set altogether on revolving platform, the respectively main hoister winch in left side and the main hoister winch in right side；It returns
Turn on platform to set altogether that there are two span winches, respectively left side span winch and right side span winch；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
The oil return pipe of the connection of third cylinder manifold, two the second fixed displacement motors of left side span winch is connected to by the 4th cylinder manifold；Right side
The oil inlet pipe of two the second fixed displacement motors of span winch is connected to by the 5th cylinder manifold, and two second of right side span winch are fixed
The oil return pipe for measuring motor is connected to by the 6th cylinder manifold；The first logical valve is equipped between third cylinder manifold and the 5th cylinder manifold, the
The second logical valve is equipped between four cylinder manifolds and the 6th cylinder manifold；
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, and then to the first variable
Motor fuel feeding；Auxiliary hook multi-way valve is controlled by the 8th shuttle valve between the hydraulic handle of auxiliary hook and electric proportional pressure-reducing valve, and then to the
Two 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, into
And control the second fixed displacement motor；Pass through the tenth shuttle valve control revolution multichannel between the hydraulic handle of revolution and electric proportional pressure-reducing valve
Valve, and then control the first fixed displacement motor；
The main hoister winch of pair includes four the second variable displacement motors, and the oil inlet pipe of four the second variable displacement motors passes through the first confluence
Plate is interconnected, and the oil return pipe of four the second variable displacement motors is interconnected by the second 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 passes through encoder respectively and detects turning for main hoister winch, secondary main hoister winch, span winch and swing mechanism
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 revolving speed of swing mechanism, pass through electric ratio
Pressure reducing valve and hydraulic control proportional multi-way valve correct the revolving 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: described hydraulic
System further includes emergency halt system and safety system, and simultaneously control PLC automatically controls emergency halt system monitoring main motor
The proportional current that system exports electric proportional pressure-reducing valve, PLC automatic control system monitor liquid level, temperature and the filtering of hydraulic oil container
Device.
5. 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.
6. a kind of crane autobalance as described in claim 1 and the control method for forcing balance system, it is characterised in that: left
It is connected between side span winch and the second fixed displacement motor of right side span winch by cylinder manifold, is equipped between the cylinder manifold of two sides
Logical valve, logical valve can be consistent with the oil pressure of adjust automatically two sides span winch, more stable when making crane amplitude variation；If left and right
Two sides span winch can not autobalance when, turn off logical valve, utilize hydraulic handle force both sides balance.
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| CN112174000B (en) * | 2020-09-30 | 2022-05-13 | 中油国家油气钻井装备工程技术研究中心有限公司 | Double-hydraulic winch lifting control device |
| CN114278630A (en) * | 2021-12-29 | 2022-04-05 | 广东精铟海洋工程股份有限公司 | Hydraulic control system of swing mechanism of pile winding crane |
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| DE19800721A1 (en) * | 1998-01-12 | 1999-07-15 | Danfoss As | Control device for a hydraulic motor |
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