CN209242509U - A kind of crane hydraulic system - Google Patents

Abstract

The utility model relates to cranes, more particularly to a kind of crane hydraulic system, including hydraulic oil container, main pump component, switch block, the rotary system for driving swing mechanism, the main hoisting system for driving main hoister winch, the secondary hoisting system for driving secondary hoister winch, the changing-breadth system for driving span winch and the dead rope system for driving dead rope winch；The input terminal of the main pump component is connected with hydraulic tank, and the output end of the main pump component is by switch block respectively to changing-breadth system, main hoisting system, secondary hoisting system, rotary system and dead rope system fuel feeding；The utility model reduces load and waves the influence for generating impact crane hydraulic system when shaking, and the pressure of balance crane hydraulic system improves the safety and stability of crane hydraulic system.

Description

A kind of crane hydraulic system

Technical field

The utility model relates to cranes, and in particular to a kind of crane hydraulic system.

Background technique

Ship's crane is a kind of special crane that hauling operation is at sea executed in environment, is mainly used for goods between naval vessel The vital tasks such as transport transfer, seaborne supply, the dispensing of underwater operation equipment and the recycling of object.Ship's crane generally uses Heavy-duty machine hydraulic system is controlled.During the work time, hull will lead to negative with wave pitching, rolling and heave, these movements Load waves shaking, and shaking is waved in load can form huge impact to hydraulic system, causes crane hydraulic system It is unstable.

Crane hydraulic system to main hoister winch, secondary main hoister winch, span winch and revolving platform provide power and Brake.When oil pressure increases suddenly, crane hydraulic system imbalance of pressure may allow hydraulic component failures or damage, make It is split cruelly at pipeline leak or even oil pipe, this can seriously threaten the safety of operation.If hydraulic component failures or damage are possible to allow liquid The safety accident that cargo falls occurs for the unexpected pressure release of pressure system.Therefore improve ship crane hydraulic system security performance and Stability is of great significance.

Summary of the invention

To solve problems of the prior art, the utility model provides a kind of crane hydraulic system, reduces load Influence of the impact to crane hydraulic system is generated when waving shaking, the pressure of balance crane hydraulic system improves The safety and stability of heavy-duty machine hydraulic system.

A kind of to achieve the above purpose, the technical solution of the present invention is: crane hydraulic system, including hydraulic oil Case, main pump component, switch block, the rotary system for driving swing mechanism, the main raising system for driving main hoister winch System, the secondary hoisting system for driving secondary hoister winch, the changing-breadth system for driving span winch and for driving dead rope to twist The dead rope system of vehicle；Hydraulic oil container provides hydraulic oil to entire crane hydraulic system, and main pump component is mentioned to entire hydraulic system For providing hydraulic oil, switch block, rotary system, main hoisting system, secondary hoisting system, changing-breadth system and dead rope system phase interworking It closes, each actuating mechanism is driven to complete the various liftings of crane, movement that is mobile, putting down cargo.

The input terminal of the main pump component is connected with hydraulic tank, and the output end of the main pump component passes through switch block point Not to changing-breadth system, main hoisting system, secondary hoisting system, rotary system and dead rope system fuel feeding；Main pump component in this way is from hydraulic Fuel tank draw oil converts mechanical energy into hydraulic coupling energy, provides power for each system.

The main pump component includes more than one Main Hydraulic Pump, and all Main Hydraulic Pumps are driven by same motor； Bigger power is provided for crane hydraulic system using multiple Main Hydraulic Pumps, and multiple Main Hydraulic Pumps are driven by same motor, It makes the revolving speed of each Main Hydraulic Pump identical, stable hydraulic fluid pressure can be provided.

The switch block is hydraulic control proportional multi-way valve；Hydraulic control proportional multi-way valve is according to the need of crane hydraulic system It wants, controls the movement of multiple control systems, compact-sized, the service life is long.

The rotary system includes the first rotary fluid motor, the second rotary fluid motor, the first revolution balance valve group, the Two-revolution balances valve group and revolution brake line；Hydraulic control proportional multi-way valve is hydraulic with the first revolution respectively by oil feed line to the right Horse connects with one end of the second rotary fluid motor, and hydraulic control proportional multi-way valve turns round liquid with first respectively by oil feed line to the left Pressure horse connects with the other end of the second rotary fluid motor, the oil feed line to the right of the first rotary fluid motor and the second revolution liquid Between the oil feed line to the left of pressure motor be equipped with first revolution balance valve group, the oil feed line to the left of the first rotary fluid motor and It is equipped with the second revolution between the oil feed line to the right of second rotary fluid motor and balances valve group, first turns round hydraulic horse and second time Rotating hydraulic motor is respectively provided with revolution braking mechanism, is equipped with revolution brake between the first revolution balance valve group and revolution braking mechanism Pipeline turns round on brake line and is successively arranged revolution Aircraft Brake Decompression Valve, revolution brake reversal valve and revolution brake speed governing valve；Hydraulic control Proportional multi-way valve controls the hydraulic oil of rotary system in oil feed line to the right and the flow direction of oil feed line to the left, to control The rotation direction of first rotary fluid motor and the second rotary fluid motor realizes that swing mechanism turns round dynamic to the left or to the right Make；First revolution balance valve group and the second revolution balance valve group adjust the first rotary fluid motor and the second rotary fluid motor to The pressure and flow on road in right oil feed line and to the left fuel feed pump guarantee to enter the first rotary fluid motor and the second revolution are hydraulic The pressure and stability of flow of motor, so that the first rotary fluid motor and the second rotary fluid motor are moved at the same time, revolving speed one It causes, such swing mechanism stable action；It turns round brake line and hydraulic oil is obtained by the input terminal for balancing valve group with the first revolution, Hydraulic oil by revolution Aircraft Brake Decompression Valve decompression, prevent pressure excessive and adjust be input to revolution braking mechanism oil pressure, when return When turning the control terminal of brake reversal valve has the hydraulic oil of the output from revolution Aircraft Brake Decompression Valve, revolution brake reversal valve is moved certainly Position connection revolution brake speed governing valve, revolution brake speed governing valve are used to adjust the flow passed through, accurate control revolution braking mechanism solution Except the speed of brake, while eliminating influence of the revolution braking mechanism variation to flow；When revolution braking mechanism needs to stop, returning Turn brake line and stop the reversal valve fuel feeding that brakes to revolution, revolution brake reversal valve resets, and turns round the hydraulic oil warp of braking mechanism Revolution brake speed governing valve flow back into fuel tank from revolution brake reversal valve, plays the role of emptying, realizes that the braking of turning course is straight To parking, braking mechanism is turned round during emptying, due to being provided with revolution brake speed governing valve, to revolution braking mechanism Emptying play the role of back pressure, avoid revolution the quick emptying of braking mechanism and cause revolution braking mechanism brake rapidly, avoid There is the phenomenon that emergency stop, preferably protects crane hydraulic system.

The main hoisting system includes main lifting motor, and main pump component is supplied by hydraulic control proportional multi-way valve to main lifting motor Oil, hydraulic control proportional multi-way valve are connect by main hook riser culverts with main lifting motor one end, and hydraulic control proportional multi-way valve passes through main hook Decline pipeline is connect with the main lifting motor other end；Back-pressure balance is connected between main lifting motor and main hook riser culverts Valve；It is furnished with main lifting motor braking mechanism on main lifting motor, main lifting motor braking mechanism oil circuit is connect by main raising shuttle valve Enter main hook riser culverts and main hook decline pipeline；Main raising Aircraft Brake Decompression Valve is successively arranged on main lifting motor braking mechanism oil circuit With main raising brake reversal valve；Main raising check valve is parallel in main raising Aircraft Brake Decompression Valve and main raising reversal valve.Main pump Component provides hydraulic oil to hydraulic control proportional multi-way valve, and hydraulic control proportional multi-way valve control hydraulic oil enters main hook riser culverts and main hook Decline the flow direction of pipeline, to control the rotation direction of main lifting motor, realizes the raising and lowering movement of main hook.Main hook In decline, because having overflow valve in back-pressure balance valve, check valve is parallel on overflow valve, when main hook declines, from main raising The hydraulic oil that motor comes out can only be by overflow valve, and overflow valve can provide certain back pressure, avoid main raising horse in this way, can allow Main hook rapid decrease is caused up to quick emptying, in order to the decline for making weight stable.Main lifting motor braking mechanism is being led It rises and prevents main hoister winch movement when winch is failure to actuate always, prevent main hoisting system from breaking down suddenly and safe thing occurs Therefore；Because main lifting motor braking mechanism oil circuit accesses main hook riser culverts and main hook decline pipeline by main raising shuttle valve, this Sample either main hook riser culverts or main hook decline pipeline oil inlet, and main lifting motor braking mechanism oil circuit can be transferred through main raising Shuttle valve obtains hydraulic oil, and main lifting motor braking mechanism oil circuit depressurizes after obtaining hydraulic oil by main raising Aircraft Brake Decompression Valve, so Main raising brake reversal valve automatic position-changing is controlled by the hydraulic oil of main lifting motor braking mechanism oil circuit afterwards to enter by hydraulic oil To main lifting motor braking mechanism, main lifting motor braking mechanism obtains the power for pushing brake open, brake main raising strand after pushing open Vehicle can work.Main raising check valve, main raising commutation are parallel in main raising Aircraft Brake Decompression Valve and main raising reversal valve When the oil pressure that valve comes out is excessive, main raising check valve is pushed open by section hydraulic oil and flows back into main raising Aircraft Brake Decompression Valve decompression input End is depressured by main raising pressure reducing valve, further protects main hoisting system.

The pair hoisting system includes secondary raising hydraulic motor and stabilization valve；Hydraulic control proportional multi-way valve passes through auxiliary hook tedge Road connect with secondary raising hydraulic motor one end, and hydraulic control proportional multi-way valve is another by auxiliary hook decline pipeline and pair raising hydraulic motor One end connection, auxiliary hook, which declines, is equipped with stabilization valve between pipeline and secondary raising hydraulic motor；Secondary raising hydraulic motor is furnished with secondary raising Motor brake mechanism and disc brake mechanism, secondary lifting motor braking mechanism oil circuit pass through secondary raising shuttle valve access auxiliary hook riser culverts and Auxiliary hook declines pipeline, and secondary raising Aircraft Brake Decompression Valve and secondary raising brake reversal valve are successively arranged on secondary raising braking mechanism oil circuit； Secondary raising check valve is parallel in secondary raising Aircraft Brake Decompression Valve and the secondary raising brake concatenated both ends of reversal valve；Hydraulic oil container with Between disc brake mechanism be equipped with disc brake control system, disc brake control system by disc brake shuttle valve respectively with auxiliary hook riser culverts and auxiliary hook Decline pipeline connection；The stabilization valve includes spool, the valve body being located in spool, spring and pushing block, and spool has A mouthfuls and B Mouthful, have in spool with A mouthful and the B mouthfuls of valve chambers communicated, A mouthfuls communicate with pair raising hydraulic motor, B mouthfuls with auxiliary hook decline pipeline phase Logical, pushing block is located in valve chamber, and spring is located between spool and pushing block, and in a non-operative state, spool seals under the action of the spring It gets lodged at B mouthfuls, A mouthfuls communicate with valve chamber.Hydraulic control proportional multi-way valve control hydraulic oil enters auxiliary hook riser culverts and auxiliary hook down-comer The raising and lowering movement of auxiliary hook is realized to control the rotation direction of secondary raising hydraulic motor in the flow direction on road.Secondary raising Motor brake mechanism and disc brake mechanism prevent always secondary hoister winch movement when secondary hoister winch is failure to actuate, and prevent secondary raising system Safety accident occurs for system；Secondary raising braking mechanism oil circuit passes through secondary raising shuttle valve and obtains hydraulic oil, and either auxiliary hook rises in this way Pipeline or auxiliary hook decline pipeline oil inlet, and secondary lifting motor braking mechanism oil circuit can obtain hydraulic oil, pass through secondary raising shuttle valve Hydraulic oil by secondary raising Aircraft Brake Decompression Valve decompression, the hydraulic oil from secondary raising Aircraft Brake Decompression Valve allows secondary raising brake commutation Hydraulic oil is input in secondary lifting motor braking mechanism by valve automatic position-changing, and brake is pushed in secondary lifting motor braking mechanism acquisition open Power, while starting disc brake control system, disc brake control system control disc brake mechanism opening, when secondary lifting motor braking mechanism and After disc brake mechanism releases, secondary hoister winch can work；It is parallel in secondary raising Aircraft Brake Decompression Valve and secondary raising reversal valve Secondary raising check valve when the oil pressure that secondary raising brake reversal valve comes out is excessive, pushes secondary raising check valve open and flows back into secondary raising brake Vehicle pressure reducing valve decompression input terminal is depressured, and secondary hoisting system is further protected.When crane hoisting, hydraulic oil enters secondary rise Valve chamber is entered by A mouthfuls of stabilization valve after liter hydraulic motor, when the hydraulic fluid pressure in valve chamber is less than the elastic force of spring, valve body It is blocked at B mouth under the action of the spring, hydraulic oil can not be discharged from B mouthfuls, when the hydraulic fluid pressure in valve chamber is greater than spring When elastic force, hydraulic oil acts on pushing block, and pushing block drives spring to move to pushing block direction, and spring reduces or do not have to the active force of valve body Have, valve body hydraulic oil pressure effect under open, A mouthful of hydraulic fluid port are connected to B mouthfuls of hydraulic fluid port, reach control hydraulic oil return flow, The purpose of speed, avoids to cause auxiliary hook raising unstable or jitter phenomenon due to quick oil return in this way.If hydraulic oil is from B mouthfuls Into from A mouthfuls of discharges, then hydraulic oil needs to overcome the elastic force of spring can just push valve body open, plays the role of oil-control.

The changing-breadth system includes the first luffing hydraulic motor, the second luffing hydraulic motor, the first luffing balanced valve and the Two luffing balanced valves；Hydraulic control proportional multi-way valve rises oil feed line by luffing and becomes respectively with the first luffing hydraulic motor and second One end of width hydraulic motor connects, hydraulic control proportional multi-way valve by luffing decline oil feed line respectively with the first luffing hydraulic motor It is connected with the other end of the second luffing hydraulic motor, rises in the luffing being connected to the first luffing hydraulic motor and set on oil feed line There is the first luffing balanced valve, rises in the luffing being connected to the second luffing hydraulic motor and be equipped with the second luffing balance on oil feed line Valve；First luffing hydraulic motor and the second luffing hydraulic motor are furnished with luffing motor brake mechanism, luffing motor brake mechanism oil Road accesses luffing by luffing shuttle valve and rises oil feed line and luffing decline oil feed line, successively sets on luffing braking mechanism oil circuit There are luffing Aircraft Brake Decompression Valve and luffing brake reversal valve；At the both ends of concatenated luffing Aircraft Brake Decompression Valve and luffing brake reversal valve It is parallel with luffing check valve.Hydraulic control proportional multi-way valve control hydraulic oil enters luffing and rises oil feed line and luffing decline fuel feed pump The flow direction on road, so that the rotation direction of control the first luffing hydraulic motor and the second luffing hydraulic motor, realizes boom Raising and lowering movement；First luffing balanced valve and the second luffing balanced valve guarantee that entering the first luffing hydraulic motor and second becomes The hydraulic fluid flow rate of width hydraulic motor is consistent, thus the first luffing hydraulic motor of control and the second luffing hydraulic motor rotary speed one It causes；Luffing motor brake mechanism prevents always span winch movement when span winch is failure to actuate, and prevents changing-breadth system from pacifying Full accident；Luffing motor brake mechanism oil circuit leads to luffing shuttle valve and obtains hydraulic oil, in this way, no matter hydraulic oil rises fuel feeding from luffing Pipeline or luffing decline oil feed line enter, and hydraulic oil can be obtained on luffing braking mechanism oil circuit, through luffing shuttle valve Hydraulic oil is depressurized by luffing Aircraft Brake Decompression Valve, the control terminal of hydraulic oil by decompression control luffing brake reversal valve allow its from Move position to make hydraulic oil enter luffing motor brake mechanism from luffing brake reversal valve, luffing motor brake mechanism obtains Push the power of brake open, rear span winch is pushed in brake, which open, to work；In luffing Aircraft Brake Decompression Valve and luffing brake reversal valve On be parallel with luffing check valve, when the oil pressure that luffing reversal valve comes out is excessive, pushes luffing check valve open and flow back into luffing brake and subtract The input terminal of pressure valve is depressured, and changing-breadth system is further protected.

The dead rope system includes dead rope hydraulic motor, dead rope balanced valve and dead rope hydraulic motor rotary speed control system；Liquid Control proportional multi-way valve is connect by packing up oil feed line with one end of dead rope hydraulic motor, and hydraulic control proportional multi-way valve is supplied by releasing Oil pipe line is connect with the other end of dead rope hydraulic motor, dead rope hydraulic motor and pack up between oil feed line be equipped with dead rope balance Valve；The dead rope hydraulic motor rotary speed control system controls the speed for releasing dead rope by controlling the discharge capacity of dead rope hydraulic motor Degree.Hydraulic control proportional multi-way valve control hydraulic oil enters the flow direction packed up oil feed line and release oil feed line, to control The rotation direction of dead rope hydraulic motor, realize to dead rope pack up and releasing act；Control main hook swing amplitude by pair The speed control of dead rope packed up, and dead rope hydraulic motor rotary speed control system is accurately controlled according to the amplitude of fluctuation of live main hook Release dead rope speed, play shaken when preventing main hook from slinging cargo it is excessive.

Further, the fuel feed pump to the right of the fuel feed pump to the right of the first rotary fluid motor and the second rotary fluid motor it Between be connected with more than one valve block of converging to the right, the fuel feed pump to the left and the second rotary fluid motor of the first rotary fluid motor Fuel feed pump to the left between be connected with more than one valve block of converging to the left.Pass through the valve block and to the left confluence valve block is real of converging to the right Existing centralized oil supply and concentration oil return, fuel feeding pipe pressure is consistent to the right and fuel feeding pipe pressure is consistent to the left, guarantees that the first revolution is hydraulic Motor and the second rotary fluid motor acquisition driving pressure are consistent, keep its work synchronous.

Further, there are four main lifting motor settings, the main hook riser culverts of four main lifting motors are main by first Raising is converged, and valve block is interconnected, and the main hook decline pipeline of four main lifting motors is mutually connected by the second main raising confluence valve block It is logical.The main lifting motor of setting four drives main hoister winch, and main hoister winch is made to obtain bigger jacking capacity；First main raising Valve block of converging and the second main raising confluence valve block realize that centralized oil supply and concentration oil return, four main lifting motors obtain same drive Power keeps its work synchronous, drives main hoister winch stable working.

Further, there are two secondary raising hydraulic motor settings, the auxiliary hook riser culverts of two secondary raising hydraulic motors are logical It crosses the first secondary raising confluence valve block to be interconnected, the auxiliary hook decline pipeline of two secondary raising hydraulic motors is converged by the second secondary raising Valve block is flowed to be interconnected.Two sets of setting secondary raising hydraulic motors drive secondary hoister winch, and that improves secondary hoister winch hangs a liter ability, By the first secondary raising confluence valve block and the second secondary raising confluence valve block centralized oil supply and oil return is concentrated, secondary raising hydraulic motor obtains Same driving force is obtained, keeps its work synchronous, drives secondary hoister winch stable working.

Further, disc brake control system includes disc brake hydraulic pump, disc brake commutation valve group, disc brake control shuttle valve, disc brake storage It can device valve block, disc brake accumulator, Y type three position four-way directional control valve, disc brake pilot operated directional control valve, disc brake oil inlet emptying shuttle valve and threeway Valve；The input terminal of disc brake hydraulic pump is connected to hydraulic oil container, and the output end of disc brake hydraulic pump is connected to disc brake commutation valve group, disc brake Two input terminals for controlling shuttle valve are connected to disc brake commutation valve group, and disc brake controls the output end of shuttle valve and disc brake accumulator valve block connects Logical, disc brake accumulator is connected to disc brake accumulator valve block, the output end of disc brake accumulator valve block respectively with 1 end of triple valve and Y The P mouth of type three position four-way directional control valve is connected to, and the A mouth of Y type three position four-way directional control valve connects with the first end of disc brake oil inlet emptying shuttle valve Logical, the B mouth of Y type three position four-way directional control valve is connected to 2 mouthfuls of disc brake pilot operated directional control valve, 3 mouthfuls of disc brake pilot operated directional control valve and disc brake The second end of oil inlet emptying shuttle valve is connected to, and 4 mouthfuls of disc brake pilot operated directional control valve are connected to hydraulic oil container, and the 3 of disc brake pilot operated directional control valve Mouth is connected to 4 mouthfuls, and the control terminal of disc brake pilot operated directional control valve is connected to the output end of disc brake shuttle valve, disc brake oil inlet emptying shuttle valve and three 3 ends of port valve are connected to, 2 ends of triple valve and disc brake mechanism connection.Disc brake hydraulic pump extracts hydraulic oil from hydraulic oil container, will be mechanical It can be converted into hydraulic energy, hydraulic oil comes out from disc brake commutation valve group and pushes disc brake control shuttle valve open, into after disc brake accumulator valve block It is divided into two-way, connects disc brake accumulator energy reserve all the way, another way enters three, Y type from the output end of disc brake accumulator valve block Four-way reversing valve, when secondary hoister winch lifts cargo, the P mouth of Y type three position four-way directional control valve is connected to A mouthfuls, and hydraulic oil is from P mouthfuls It pushes disc brake oil inlet emptying shuttle valve open after into A mouthfuls of outflows and then finally enters disc brake mechanism from 3 mouthfuls of triple valve into 2 mouthfuls and unlock Brake, just relieves the braking to secondary hoister winch；When needing secondary hoister winch to hang people, by the P of Y type three position four-way directional control valve Mouth is connected to B mouthfuls, and hydraulic oil enters after B mouthfuls of outflows from P mouthfuls into disc brake pilot operated directional control valve, if disc brake pilot operated directional control valve receives To hydraulic control signal, the transposition of disc brake pilot operated directional control valve, 2 mouthfuls of disc brake pilot operated directional control valve are connected to 3 mouthfuls, and hydraulic oil pushes disc brake oil inlet open Emptying shuttle valve enters disc brake mechanism by triple valve and unlocks brake, releases the braking to secondary hoister winch, secondary hoister winch can With work；Secondary raising hydraulic motor then has in auxiliary hook riser culverts or auxiliary hook down-comer Lu Shangyou hydraulic oil hydraulic once working Oil has input, then has hydraulic oil on disc brake shuttle valve, and the control of disc brake pilot operated directional control valve is entered by the hydraulic oil of disc brake shuttle valve End processed allows disc brake pilot operated directional control valve to replace, if the control terminal of disc brake pilot operated directional control valve does not have hydraulic oil, disc brake liquid controlled reversing Valve resets.The pressure release if secondary hoisting system breaks down suddenly, i.e., do not have liquid in auxiliary hook riser culverts or auxiliary hook down-comer road Pressure oil, disc brake pilot operated directional control valve lose hydraulic control signal, the transposition of disc brake pilot operated directional control valve, 3 mouthfuls of disc brake pilot operated directional control valve and 4 mouthfuls of companies Logical, the hydraulic oil of disc brake mechanism quickly returns hydraulic oil container by triple valve, disc brake oil inlet emptying shuttle valve and disc brake pilot operated directional control valve, Fast braking pair hoister winch after the pressure release of disc brake mechanism prevents people from from falling in midair, protecting personal safety suddenly in this way.When Y type Three position four-way directional control valve breaks down, and can be connected to 1 mouthful of triple valve with 2 mouthfuls by handle, and disc brake mechanism is made to obtain oil pressure solution Brake is opened, allows secondary hoister winch to work, plays the role of emergency.

Further, the disc brake accumulator valve block include energy storage check valve, energy storage pilot operated directional control valve, first switch, The input terminal of second switch, energy storage overflow valve and disc brake overflow valve, energy storage check valve is connected to the output end of disc brake control shuttle valve, The output end of energy storage check valve is connected to the control terminal of energy storage pilot operated directional control valve, while the output end and triple valve of energy storage check valve 1 end be connected to the P mouth of Y type three position four-way directional control valve, the output end of energy storage check valve passes through first switch and disc brake accumulator Connection, disc brake accumulator are connected to by energy storage overflow valve with hydraulic oil container, and disc brake accumulator passes through second switch and hydraulic oil container The input terminal of connection, energy storage check valve is connected to by disc brake overflow valve with hydraulic oil container, and disc brake overflow valve is changed by energy storage hydraulic control It is connected to valve with hydraulic oil container.Hydraulic oil enters disc brake accumulator valve block from disc brake control shuttle valve output end, super when entering pressure The setting pressure of energy storage pilot operated directional control valve is crossed, the end X in disc brake overflow valve is connected to by the transposition of energy storage pilot operated directional control valve with fuel tank, this When, section hydraulic oil achievees the purpose that control enters disc brake mechanism and disc brake accumulator oil pressure size from disc brake overflow valve overflow, In the present invention, the setting pressure of energy storage pilot operated directional control valve is less than the setting pressure of disc brake overflow valve, in this way, allowing storage before this Energy pilot operated directional control valve transposition, passes through disc brake overflow valve and realizes overflow, if energy storage hydraulic control defective diverted valve, timely energy storage check valve Input terminal has biggish pressure, but the pressure can play overflow if it is greater than the setting pressure of disc brake overflow valve in the same old way Effect, effectively protects disc brake control system.The normally opened setting of first switch, being in due course will be in disc brake control system Energy conversion stores for compression energy, when disc brake control system needs, and compression energy is changed into hydraulic energy and is released Come, mend supply disc brake control system again, when disc brake control system instantaneous pressure increases, the energy of this part is can be absorbed in it Amount, to guarantee that whole system pressure is normal.When being more than the setting pressure of energy storage overflow valve such as the pressure in disc brake accumulator, energy storage Overflow valve connects hydraulic oil container to control the oil pressure of disc brake accumulator, has safeguard protection effect.The normally closed setting of second switch, when When the energy demand of disc brake accumulator releases or urgent superpressure situation occurs, second switch is opened into connection hydraulic oil container and is unloaded Lotus plays the role of overpressure protection to disc brake control system.

Further, the dead rope hydraulic motor rotary speed control system includes sequentially connected first dead rope overflow valve, One dead rope two-position three way pilot operated directional control valve, the second dead rope overflow valve；The P mouth of first dead rope overflow valve passes through tension valve block and packs up Oil feed line connection, the T mouth of the first dead rope overflow valve are connect with oil feed line is released, the X mouth and first of the first dead rope overflow valve The connection of dead rope two-position three way pilot operated directional control valve, the first dead rope two-position three way pilot operated directional control valve are connect with the second dead rope overflow valve, the Two dead rope overflow valves are connected with hydraulic tank；The X mouth of first dead rope overflow valve by bidirectional throttling valve be connected to tension valve block with Between dead rope balanced valve；Dead rope shuttle valve, the outlet of dead rope shuttle valve are connected between oil feed line packing up oil feed line and releasing End is connected with dead rope pressure reducing valve, and the outlet end of dead rope pressure reducing valve is connected to the control terminal of dead rope hydraulic motor, in dead rope pressure reducing valve Outlet end be connected with dead rope solenoid valve, dead rope solenoid valve is connected to the control terminal of the first dead rope two-position three way pilot operated directional control valve, Meanwhile dead rope solenoid valve is connected to hydraulic oil container.Dead rope balanced valve is set, when hydraulic oil drives dead rope liquid from oil feed line is released When pressure motor, back pressure can be provided by dead rope balanced valve, avoids dead rope hydraulic motor because of quick emptying.Not in dead rope solenoid valve In the case where electricity, the first dead rope two-position three way pilot operated directional control valve is failure to actuate, in this case, when the oil pressure for packing up oil feed line is super The first dead rope relief valve set pressure is crossed, oil feed line emptying is released in the connection of the first dead rope overflow valve, and oil feed line is packed up in guarantee Oil pressure stablize, play the role of protection to dead rope hydraulic motor.Dead rope hydraulic motor rotary speed control system passes through dead rope shuttle valve Control hydraulic oil is obtained, is depressurized by dead rope pressure reducing valve and guarantees that the oil pressure of output is stablized, obtain the control terminal of dead rope hydraulic motor Required pressure controls dead rope hydraulic motor.If dead rope solenoid valve obtains electric signal, it is steady that the transposition of dead rope solenoid valve connects first The control terminal of rope two-position three way pilot operated directional control valve, the first dead rope two-position three way pilot operated directional control valve obtain hydraulic control signal and replace, and first The X mouth of dead rope two-position three way pilot operated directional control valve and the first dead rope overflow valve is connected, and hydraulic oil returns after the second dead rope overflow valve Hydraulic oil container is flowed, by adjusting the flow of the second dead rope overflow valve control reflux hydraulic oil container hydraulic oil, control enters dead rope liquid The oil pressure of pressure motor, to realize the purpose of the speed of control dead rope.In this way by the elastic of control dead rope, stablize main hook, prevents Only main hook lifting cargo shakes big, and safety accident occurs.

Further, the hydraulic control proportional multi-way valve includes the first rotary fluid motor in control rotary system and second time The third reversal valve of main lifting motor and the in the first reversal valve and the second reversal valve of rotating hydraulic motor, the main hoisting system of control Four reversal valves control the 5th reversal valve of secondary raising hydraulic motor and the 6th reversal valve, control changing-breadth system in secondary hoisting system In the first luffing hydraulic motor and the second luffing hydraulic motor the 7th reversal valve and the 8th reversal valve and control dead rope system in 9th reversal valve of dead rope hydraulic motor；Wherein, first, second, third, fourth, the five, the six, the seven, the 8th and the 9th are Three seven logical pilot operated directional control valves.It controls different systems respectively by different reversal valves, is mutually independent of each other, a system event Barrier, other systems can still work.

The utility model have compared with prior art it is following the utility model has the advantages that

1, main hoister winch, secondary main hoister winch, span winch, swing mechanism and dead rope winch are by independent hydraulic pressure system System control, independence is good, high reliablity；

2, main hoister winch, secondary main hoister winch, span winch, swing mechanism and dead rope winch are respectively provided with braking mechanism, Ensure the safe operation of crane.

3, setting dead rope system stablizes crane main hook, and shaking when preventing main hook from slinging cargo is reduced due to cargo shakes The impact to crane hydraulic system generated, improves the safety of crane hydraulic system.

4, rotary system, main hoisting system, secondary hoisting system are respectively provided with confluence valve block, guarantee the hydraulic motor of same system Work synchronizes, and increases the stationarity of crane hydraulic system.

5, secondary raising hydraulic system setting disc brake control system further ensures that when crane hangs people and is lifted people's Personal safety.

Detailed description of the invention

Fig. 1 the utility model hydraulic system pipeline figure one.

Fig. 2 the utility model hydraulic system pipeline figure two.

Fig. 3 is rotary system schematic diagram.

Fig. 4 is main hoisting system schematic diagram.

Fig. 5 is secondary hoisting system schematic diagram.

Fig. 6 is changing-breadth system schematic diagram.

Fig. 7 is dead rope systematic schematic diagram.

Fig. 8 is disc brake control system driving principle figure and cooling system schematic diagram.

Fig. 9 is disc brake control system schematic diagram.

Figure 10 is the schematic diagram of back-pressure balance valve.

Figure 11 is the schematic diagram of stabilization valve.

Figure 12 is the schematic diagram of disc brake accumulator valve block.

Figure 13 is the schematic diagram of disc brake commutation valve group.

Figure 14 is the connection schematic diagram of motor and Main Hydraulic Pump.

Figure 15 is the schematic diagram of hydraulic control proportional multi-way valve.

Figure 16 is the schematic diagram of the first, second, the 7th and the 8th reversal valve.

Figure 17 is the schematic diagram of the reversal valve of third, the four, the five, the 6th and the 9th.

Figure 18 is main lifting motor and main lifting motor braking mechanism connection schematic diagram.

Figure 19 is the hydraulic schematic diagram of main lifting motor braking mechanism.

Specific embodiment

The utility model is described in further details with reference to the accompanying drawings and detailed description.

As shown in Figures 1 to 8, a kind of crane hydraulic system, including hydraulic oil container 1, main pump component 2, switch block 3, For driving the rotary system 4 of swing mechanism, the main hoisting system 5 for driving main hoister winch, for driving secondary raising to twist It the secondary hoisting system 6 of vehicle, the changing-breadth system 7 for driving span winch, the dead rope system 8 for driving dead rope winch and is used for The cooling system 9 of cooling hydraulic oil.

Hydraulic oil container 1 provides hydraulic oil to entire crane hydraulic system, and main pump component 2 provides master to entire hydraulic system The hydraulic oil wanted, switch block 3, rotary system 4, main hoisting system 5, secondary hoisting system 6,8 phase of changing-breadth system 7 and dead rope system Mutually cooperation drives each actuating mechanism to complete the various liftings of crane, movement that is mobile, putting down cargo.The but liquid of cooling system cold 9 Pressure oil guarantees that the hydraulic fluid temperature in hydraulic oil container 1 is not too high.

The input terminal of the main pump component 2 is connect with hydraulic oil container 1, and the output end of the main pump component passes through switch block 3 respectively to changing-breadth system 4, main hoisting system 5, secondary hoisting system 6,8 fuel feeding of rotary system 7 and dead rope system；Main pump group in this way Part 2 converts mechanical energy into hydraulic coupling energy from 1 draw oil of hydraulic oil container, provides power for each system.

As shown in Fig. 1 and Figure 13, the main pump component 2 includes two Main Hydraulic Pumps 21, and two Main Hydraulic Pumps 21 pass through Same motor 200 drives；The output end of two Main Hydraulic Pumps 21 is equipped with main pump check valve 22, prevents hydraulic oil adverse current, two main pumps The output end of check valve is respectively P1 and P2.Main Hydraulic Pump 21 provides more power for crane hydraulic system, is different Hydraulic system provides kinetic energy.

The switch block 3 is hydraulic control proportional multi-way valve 30.As shown in Fig. 2, Figure 14 to Figure 16, the hydraulic control ratio is more Road valve 30 includes the third commutation of the first reversal valve 31 and the second reversal valve 32, the main hoisting system of control in control rotary system Valve 33 and the 4th reversal valve 34, the 5th reversal valve 35 of the secondary hoisting system of control and the 6th reversal valve 36 control changing-breadth system 7th reversal valve 37 and the 8th reversal valve 38 and the 9th reversal valve 39 for controlling dead rope system；Wherein, first, second, third, Four, the five, the six, the seven, the 8th and the 9th is three seven logical pilot operated directional control valves, and P1 and P2 collect rear defeated with each reversal valve Enter end connection, the oil revolving end of each reversal valve is connected with hydraulic tank by T1 tie point.It is controlled respectively by different reversal valves Different systems is made, is mutually independent of each other, a system failure, other systems can still work.Hydraulic control proportional multi-way valve 30 According to the needs of crane hydraulic system, the movement of multiple control systems is controlled, compact-sized, the service life is long.

As shown in Fig. 2, the first reversal valve 31 has SA1 and SB1 piping connection point, the second reversal valve 32 has SA2 and SB2 Piping connection point has the SLL oil return pipe tie point that hydraulic oil container is connected to by T2 in rotary system.Third reversal valve 33 has There is MWA1 and MWB1 piping connection point, the 4th reversal valve 34 has MWA2 and MWB2 piping connection point, has in main hoisting system There is WMX rotary fluid motor control tie point and is connected to the MWL1 oil return pipe tie point of hydraulic oil container by T2.5th commutation Valve 35 has AWA1 and AWB1 piping connection point, and the 6th reversal valve 36 has AWA2 and AWB2 piping connection point, in secondary raising system There is the AWL oil return pipe tie point that hydraulic oil container is connected to by T2 in system.7th reversal valve 37 has LWA1 and LWB1 pipeline Tie point, the 8th reversal valve 38 have LWA2 and LWB2 piping connection point, hydraulic with being connected to by T2 in changing-breadth system The LWL oil return pipe tie point of fuel tank.9th reversal valve 39 has TWA and TWB piping connection point, has in dead rope system and passes through T2 is connected to the TWL oil return pipe tie point of hydraulic oil container." tie point " documented by above-mentioned can be jointing, and in this reality In novel, since Figure of description is beyond expression entire hydraulic system in same secondary figure, only indicate each figure The piping connection of middle corresponding symbol.

As shown in figure 3, the rotary system 4 includes the first rotary fluid motor 41, the second rotary fluid motor 42, first The revolution balance revolution of valve group 43, second balance valve group 44 and revolution brake line 45；The commutation of the SA1 of first reversal valve 31 and second The SA2 of valve 32 turns round hydraulic horse with the hydraulic horse 41 and second of the first revolution respectively with the SA1 and SA2 of corresponding fuel feed pump to the right 46 It is connected up to 42 one end, the SB2 and the SB1 of corresponding fuel feed pump to the left 47 of the SB1 of the first reversal valve 31 and the second reversal valve 32 It is connect respectively with the other end of the first rotary fluid motor 41 and the second rotary fluid motor 42 with SB2, the first hydraulic horse of revolution Up to 41 fuel feed pump to the right 46 and the second rotary fluid motor 42 fuel feed pump to the left 47 between be equipped with first revolution balance valve group 43, it is equipped between the fuel feed pump to the left 47 of the first rotary fluid motor 41 and the fuel feed pump to the right 46 of the second rotary fluid motor 42 Second revolution balance valve group 44, the hydraulic horse 41 of the first revolution and the second rotary fluid motor 42 are respectively provided with revolution braking mechanism 413, revolution brake line 45, i.e. revolution brake line are equipped between the first revolution balance valve group 43 and revolution braking mechanism 413 45 are connected to oil feed line 46 to the right and to the left between oil feed line 47, either the still fuel feeding to the left of fuel feed pump pipeline 46 to the right 47 fuel feeding of pipeline has hydraulic oil on revolution brake line 45.Revolution brake decompression is successively arranged on revolution brake line 45 Valve 48, revolution brake reversal valve 49 and revolution brake speed governing valve 40；Revolution brake reversal valve 49 is that control terminal is connected to revolution brake The two-position three way pilot operated directional control valve of 49 entrance of vehicle reversal valve, the first rotary fluid motor 41 and the second rotary fluid motor 42 are let out Hydraulic fluid port connects drain line 100, and drain line 100 connects hydraulic oil container 1, revolution Aircraft Brake Decompression Valve 48 and revolution brake reversal valve 49 are equipped with the oil return line on connection 100 tunnel of drain mast, and the first reversal valve 31 and the second reversal valve 32 control the hydraulic of rotary system 4 Oil is in fuel feed pump 46 to the right and the flow direction of fuel feed pump 47 to the left, thus the first rotary fluid motor of control 41 and the second revolution The rotation direction of hydraulic motor 42 realizes the movement that swing mechanism is turned round to from left to right.First revolution balance valve group 43 and second Revolution balance valve group 44 adjusts the first rotary fluid motor 41 and the second rotary fluid motor 42 fuel feed pump and fuel feeding to the left to the right Pressure and flow in pipe guarantee to enter the first rotary fluid motor 41 and the pressure and flow of the second rotary fluid motor 42 are steady Fixed, so that the first rotary fluid motor 41 and the second rotary fluid motor 42 be made to move at the same time, revolving speed is consistent, such swing mechanism Stable action；Brake line 45 is turned round by obtaining hydraulic oil with the input terminal of the first revolution balance valve group 43, hydraulic oil passes through It turns round Aircraft Brake Decompression Valve 48 to depressurize, prevent pressure excessive and adjusts the oil pressure for being input to revolution braking mechanism 413, when revolution is braked When the control terminal of reversal valve 49 has the hydraulic oil of the output from revolution Aircraft Brake Decompression Valve 48, revolution brake reversal valve 49 is moved certainly Position connection revolution brake speed governing valve 40, revolution brake speed governing valve 40 are used to adjust the flow passed through, accurate control revolution braking machine Structure 413 releases the speed of brake, while eliminating influence of the revolution variation of braking mechanism 413 to flow；Turn round braking mechanism 413 When needing to stop, revolution brake line 45 stops 49 fuel feeding of reversal valve that brakes to revolution, and revolution brake reversal valve 49 resets, revolution The hydraulic oil of braking mechanism 413 flow back into fuel tank from revolution brake reversal valve 49 through revolution brake speed governing valve 40, plays emptying Effect realizes the braking of turning course until parking, turns round braking mechanism 413 during emptying, due to stopping provided with revolution Therefore vehicle speed governing valve 40 plays the role of back pressure to the emptying of revolution braking mechanism 413, avoids revolution braking mechanism 413 quick Emptying and cause revolution braking mechanism 413 to brake rapidly, the phenomenon that avoiding the occurrence of emergency stop, preferably protects crane hydraulic pressure system System.

The fuel feed pump to the right 46 of the fuel feed pump to the right 46 of first rotary fluid motor 41 and the second rotary fluid motor 42 it Between be connected with it is more than one to the right converge valve block 411, the fuel feed pump to the left 47 of the first rotary fluid motor 41 with second turn round More than one valve block 412 of converging to the left is connected between the fuel feed pump to the left 47 of hydraulic motor 42.Pass through valve block of converging to the right 411 and 412 pieces of realization centralized oil supplies of manifold valve and oil return is concentrated to the left, 46 pressure of fuel feed pump is consistent to the right and fuel feed pump 47 to the left Pressure is consistent, guarantees that the first rotary fluid motor and the second rotary fluid motor acquisition driving pressure are consistent, keeps its work synchronous.

As shown in figure 4, the main hoisting system 5 includes four main lifting motors 51, main pump component 2 is more by hydraulic control ratio Road valve 30 passes through main hook riser culverts 52 and four to four main 51 fuel feeding of lifting motor, third reversal valve 33 and the 4th reversal valve 34 A main lifting motor one end connection, third reversal valve 33 and the 4th reversal valve 34 decline pipeline 53 and four main raisings by main hook The connection of 51 other end of motor；The main hook riser culverts 52 of four main lifting motors are mutual by the first main raising manifold valve 54a block The main hook decline pipeline 53 of connection, four main lifting motors 51 is interconnected by the second main raising confluence valve block 54b.Setting four A main lifting motor 51 drives main hoister winch, and main hoister winch is made to obtain bigger jacking capacity；First main raising manifold valve Block 54a and second is main, and raising confluence valve block 54b realizes centralized oil supply and concentrates oil return, and four main lifting motors 51 obtain similarly Driving force keeps its work synchronous, drives main hoister winch stable working.

Back-pressure balance valve 55 is connected between main lifting motor 51 and main hook riser culverts 52；As shown in Figure 10, Figure 18, Back-pressure balance valve 55 includes backpressure overflow valve 5501 and back pressure check valve 5502, and the input terminal of backpressure overflow valve 5501 is connected to master One end of lifting motor 51, the output end of back pressure check valve 5502 are connected to one end of main lifting motor 51, backpressure overflow valve 5501 and back pressure check valve 5502 it is in parallel.It is furnished with main lifting motor braking mechanism 56 on main lifting motor 51, main lifting motor is stopped Mechanism of car oil circuit 57 accesses main hook riser culverts 52 by main raising shuttle valve 58 and main hook declines pipeline 53；Such as Fig. 4 and Figure 19 institute Show, main raising Aircraft Brake Decompression Valve 59 and main raising brake reversal valve 510 are successively arranged on main lifting motor braking mechanism oil circuit 57； Main raising check valve 511 is parallel in concatenated main raising Aircraft Brake Decompression Valve 59 and main raising reversal valve 510；Main raising brake Reversal valve 510 is the two-position three way pilot operated directional control valve that control terminal is connected to main raising brake 510 input terminal of reversal valve, and four are led It rises the drain tap of motor 51 and drain line 100 is connected by draining multi-pass body valve block 512, main raising Aircraft Brake Decompression Valve 59 and lead It rises brake reversal valve 510 and is equipped with the oil return line connecting with draining multi-pass body valve block 512；Collected by draining multi-pass body valve block 512 The middle simple and convenient management of oil return line.Main pump component 2 provides hydraulic oil, hydraulic control proportional multi-way valve 30 to hydraulic control proportional multi-way valve 30 Control hydraulic oil enters the flow direction of main hook riser culverts 52 and main hook decline pipeline 53, to control main lifting motor 51 Rotation direction realizes the raising and lowering movement of main hook；Main hook is in decline, because having backpressure overflow valve in back-pressure balance valve 55 5501, back pressure check valve 5502 is parallel on backpressure overflow valve 5501, when main hook declines, from the liquid of main lifting motor 51 out Pressure oil can only be by backpressure overflow valve 5501, and backpressure overflow valve 5501 can provide certain back pressure, in this way, being avoided that main raising The quick emptying of motor and cause main hook rapid decrease, in order to the decline for making weight stable；Main lifting motor braking mechanism 56 exists Main hoister winch movement is prevented when main hoister winch is failure to actuate always, prevents main hoisting system from safety accident occurs；It is risen because based on It rises motor brake mechanism oil circuit 57 and main hook riser culverts 52 and main hook decline pipeline 53 is accessed by main raising shuttle valve 58, so not Pipe is that main hook riser culverts 52 or main hook decline 53 oil inlet of pipeline, main lifting motor braking mechanism oil circuit 57 can be transferred through leading It rises shuttle valve 58 and obtains hydraulic oil, main lifting motor braking mechanism oil circuit 57 obtains after hydraulic oil by main raising Aircraft Brake Decompression Valve 59 Then decompression controls main raising brake 510 automatic position-changing of reversal valve by the hydraulic oil of main lifting motor braking mechanism oil circuit and allows Hydraulic oil enters main lifting motor braking mechanism 56, and main lifting motor braking mechanism 56 obtains the power for pushing brake open, brake Main hoister winch can work after pushing open.It is parallel with and leads in main raising Aircraft Brake Decompression Valve 59 and main raising reversal valve 510 Check valve 511 is risen, when the oil pressure that main raising reversal valve 510 comes out is excessive, main raising check valve 511 is pushed open and section hydraulic oil is allowed to return It flows to main 59 input terminal of raising Aircraft Brake Decompression Valve to be depressured by main raising pressure reducing valve, further protects main hoisting system.

As shown in figure 5, the pair hoisting system 6 includes two secondary raising hydraulic motors 61 and stabilization valve 62.5th commutation Valve 35 and 36 corresponding AWA1 and AWA2 of the 6th reversal valve are connected by auxiliary hook riser culverts 63 and secondary 61 one end of raising hydraulic motor It connects, the 5th reversal valve 36 and 36 corresponding AWB1 and AWB2 of the 6th reversal valve pass through auxiliary hook decline pipeline 64 and the hydraulic horse of secondary raising The other end up to 61 connects, and the auxiliary hook riser culverts 63 of two secondary raising hydraulic motors 61 pass through the first secondary raising confluence valve block 65 Interconnected, the auxiliary hook decline pipeline 64 of two secondary raising hydraulic motors 61 passes through the second secondary raising confluence 66 phase of valve block interconnection It is logical.Two sets of setting secondary raising hydraulic motors 61 drive secondary hoister winch, and that improves secondary hoister winch hangs a liter ability, passes through the first pair Raising confluence valve block 65 and the second secondary raising confluence 66 centralized oil supply of valve block and concentration oil return, secondary raising hydraulic motor 61 obtain together The driving force of sample keeps its work synchronous, drives secondary hoister winch stable working.5th reversal valve 35 and the control of the 6th reversal valve 36 Hydraulic oil enters the flow direction of auxiliary hook riser culverts 63 and auxiliary hook decline pipeline 64, to control turning for secondary raising hydraulic motor The raising and lowering movement of auxiliary hook is realized in dynamic direction.

In the present embodiment, auxiliary hook, which declines, is equipped with stabilization valve 62 between pipeline 64 and wherein a secondary raising hydraulic motor 61； Secondary raising hydraulic motor 61 is furnished with secondary lifting motor braking mechanism 67 and disc brake mechanism 68, secondary lifting motor braking mechanism oil circuit 69 Access auxiliary hook riser culverts 63 and auxiliary hook by secondary raising shuttle valve 610 and decline pipeline 64, on secondary raising braking mechanism oil circuit 69 according to It is secondary to be equipped with secondary raising Aircraft Brake Decompression Valve 611 and secondary raising brake reversal valve 612；In secondary raising Aircraft Brake Decompression Valve 611 and secondary raising The brake concatenated both ends of reversal valve 612 are parallel with secondary raising check valve 613；Secondary raising brake reversal valve 612 is control terminal connection In the two-position three way pilot operated directional control valve of secondary raising brake 612 input terminal of reversal valve, the drain tap connection of two secondary lifting motors 61 Drain line 100, secondary raising Aircraft Brake Decompression Valve 611 and secondary raising brake reversal valve 612 are equipped with time connecting with drain line 100 Oil pipe line；Secondary lifting motor braking mechanism 67 and disc brake mechanism 68 prevent always secondary hoister winch when secondary hoister winch is failure to actuate Movement, prevents secondary hoisting system safety accident；Secondary raising braking mechanism oil circuit 69 passes through secondary raising shuttle valve 610 and obtains hydraulic oil, Either auxiliary hook riser culverts 63 or auxiliary hook decline 64 oil inlet of pipeline in this way, and secondary lifting motor braking mechanism oil circuit 69 can obtain Hydraulic oil is obtained, is depressurized by the hydraulic oil of secondary raising shuttle valve 610 by secondary raising Aircraft Brake Decompression Valve 611, from pair raising brake The hydraulic oil of pressure reducing valve 611 allows secondary raising brake 612 automatic position-changing of reversal valve that hydraulic oil is input to secondary lifting motor braking machine In structure 67, secondary lifting motor braking mechanism 67 obtains the power for pushing brake open, while starting disc brake control system, disc brake control system System control disc brake mechanism opening, after secondary lifting motor braking mechanism and disc brake mechanism releases, secondary hoister winch can work； Secondary raising check valve 613, secondary raising brake commutation are parallel in secondary raising Aircraft Brake Decompression Valve 611 and secondary raising reversal valve 612 When the oil pressure that valve comes out is excessive, secondary raising check valve is pushed open and flows back into secondary raising Aircraft Brake Decompression Valve decompression input terminal being depressured, Further protect secondary hoisting system.As shown in Fig. 1 and Fig. 2, Fig. 8 and Fig. 9, it is equipped between hydraulic oil container 1 and disc brake mechanism 68 Disc brake control system 60, disc brake control system 60 by disc brake shuttle valve 610 respectively with auxiliary hook riser culverts 63 and auxiliary hook down-comer Road 64 is connected to.

As shown in figure 11, the stabilization valve includes spool 6201, the valve body being located in spool 6202, spring 6203 and pushes away Block 6204, spool have A mouthfuls and B mouthfuls, have the valve chamber 6205 communicated with A mouthfuls and B mouthfuls, A mouthfuls and secondary raising liquid in spool 6201 Pressure motor 61 communicates, and B mouthfuls communicate with auxiliary hook decline pipeline, and pushing block 6204 is located in valve chamber 6205, and spring 6203 is located at spool Between 6201 and pushing block 6204, in a non-operative state, spool 6201 blocks at B mouth under the action of spring 6203, A mouthfuls with Valve chamber 6205 communicates；When secondary hoister winch raising, hydraulic oil is entered after entering secondary raising hydraulic motor by A mouthfuls of stabilization valve Valve chamber, when the hydraulic fluid pressure in valve chamber is less than the elastic force of spring, valve body is blocked under the action of the spring at B mouth, hydraulic Oil can not be discharged from B mouthfuls, and when the hydraulic fluid pressure in valve chamber is greater than the elastic force of spring, hydraulic oil acts on pushing block, pushing block band Spring of moving is moved to pushing block direction, and spring reduces or do not have to the active force of valve body, and valve body is beaten under the pressure effect of hydraulic oil It opens, A mouthfuls of hydraulic fluid port are connected to B mouthfuls of hydraulic fluid port, reach the purpose of control hydraulic oil return flow, speed, are avoided in this way due to fast Fast oil return causes auxiliary hook raising unstable or jitter phenomenon.If hydraulic oil enters from B mouthfuls, it is discharged from A mouthfuls, then hydraulic oil needs gram The elastic force for taking spring can just push valve body open, play the role of oil-control.

As shown in Fig. 1 and Fig. 2, Fig. 8 and Fig. 9, disc brake control system 60 includes disc brake hydraulic pump 6001, disc brake commutation valve group 6002, disc brake controls shuttle valve 6003, disc brake accumulator valve block 6004, disc brake accumulator 6005, Y type three position four-way directional control valve 6006, disc brake pilot operated directional control valve 6007, disc brake oil inlet emptying shuttle valve 6008 and triple valve 6009.

The input terminal of disc brake hydraulic pump 6001 is connected to hydraulic oil container 1, and output end and the disc brake of disc brake hydraulic pump 6001 change It is connected to valve group 6002, two input terminals of disc brake control shuttle valve 6003 are connected to disc brake commutation valve group 6002, and disc brake controls shuttle valve 6003 output end is connected to disc brake accumulator valve block 6004, and disc brake accumulator 6005 is connected to disc brake accumulator valve block 6004, The output end of the disc brake accumulator valve block 6004 P mouth company with 1 end of triple valve 6009 and Y type three position four-way directional control valve 6006 respectively Logical, the A mouth of Y type three position four-way directional control valve 6006 is connected to the first end of disc brake oil inlet emptying shuttle valve 6008, and Y type 3-position 4-way changes 2 mouthfuls to B mouth and the disc brake pilot operated directional control valve 6007 of valve 6006 are connected to, 3 mouthfuls of disc brake pilot operated directional control valve 6007 with disc brake oil inlet The second end of emptying shuttle valve 6008 is connected to, and 4 mouthfuls of disc brake pilot operated directional control valve 6007 are connected to hydraulic oil container, disc brake pilot operated directional control valve 3 mouthfuls of 6007 are connected to 4 mouthfuls, and the control terminal of disc brake pilot operated directional control valve 6007 is connected to the output end of disc brake shuttle valve 610, disc brake into Oily emptying shuttle valve 6008 is connected to 3 ends of triple valve 6009, and 2 ends of triple valve 6009 are connected to disc brake mechanism 68.

Disc brake hydraulic pump 6001 extracts hydraulic oil from hydraulic oil container 1, converts mechanical energy into hydraulic energy, and hydraulic oil is from disc brake Commutation valve group 6002 come out pushes open disc brake control shuttle valve 6003, into disc brake accumulator valve block 6004 after be divided into two-way, connect all the way 6005 energy reserve of disc brake accumulator is connect, another way enters Y type 3-position 4-way from the output end of 6005 valve block of disc brake accumulator and changes To valve 6006, when secondary hoister winch lifts cargo, the P mouth of Y type three position four-way directional control valve 6006 is connected to A mouthfuls, and hydraulic oil is from P Mouth pushes disc brake oil inlet emptying shuttle valve 6008 open and unlocks brake into disc brake mechanism 68 after flowing out into A mouthfuls, just relieve to pair Rise the braking of winch；When needing secondary hoister winch to hang people, the P mouth of Y type three position four-way directional control valve 6006 is connected to B mouthfuls, liquid Pressure oil enters after B mouthfuls of outflows from P mouthfuls into disc brake pilot operated directional control valve 6007, if disc brake pilot operated directional control valve 6007 receives hydraulic control Signal, disc brake pilot operated directional control valve 6007 replace, and 2 mouthfuls of disc brake pilot operated directional control valve 6007 are connected to 3 mouthfuls, hydraulic oil push open disc brake into Oily emptying shuttle valve 6008 unlocks brake into disc brake mechanism 68 by triple valve 6009, releases the braking to secondary hoister winch, secondary Hoister winch can work；During hanging people, the pressure release if secondary hoisting system breaks down suddenly, disc brake pilot operated directional control valve 6007 lose hydraulic control signal, and disc brake pilot operated directional control valve 6007 replaces, and 3 mouthfuls of disc brake pilot operated directional control valve 6007 are connected to 4 mouthfuls, disc brake The hydraulic oil of mechanism 68 quickly returns hydraulic oil container, 68 pressure release of disc brake mechanism by triple valve 6009 and disc brake pilot operated directional control valve 6007 Fast braking pair hoister winch afterwards prevents people from from falling in midair, protecting personal safety suddenly in this way.When Y type 3-position 4-way commutates Valve 6006 breaks down, and can be connected to 1 mouthful of triple valve 6009 with 2 mouthfuls by handle, so that disc brake mechanism 68 is obtained oil pressure and unlocks Brake allows secondary hoister winch to work.

As shown in figs. 9 and 12, the disc brake accumulator valve block 6004 is changed including energy storage check valve H01, energy storage hydraulic control To valve H02, first switch H03, second switch H04, energy storage overflow valve H05 and disc brake overflow valve H06.Energy storage check valve H01's Input terminal is connected to the output end of disc brake control shuttle valve 6003, the output end and energy storage pilot operated directional control valve H02 of energy storage check valve H01 Control terminal connection, while 1 end of the output end of energy storage check valve H01 and triple valve 6009 and Y type three position four-way directional control valve 6006 P mouth connection, the output end of energy storage check valve H01 are connected to by first switch H03 with disc brake accumulator 6005, disc brake storage Can device 6005 be connected to hydraulic oil container 1 by energy storage overflow valve H05, disc brake accumulator 6005 pass through second switch H04 with it is hydraulic Fuel tank 1 is connected to, and the input terminal of energy storage check valve H01 is connected to by disc brake overflow valve H06 with hydraulic oil container 1, disc brake overflow valve H06 The end X be connected to hydraulic oil container 1 by energy storage pilot operated directional control valve H02, in the present invention, energy storage pilot operated directional control valve H02's Set the setting pressure that pressure is less than disc brake overflow valve H06.Hydraulic oil enters disc brake storage from disc brake control 6003 output end of shuttle valve Energy device valve block 6004, when the setting pressure for into pressure being more than energy storage pilot operated directional control valve H02, energy storage pilot operated directional control valve H02 transposition The end X in disc brake overflow valve is connected to fuel tank, at this point, section hydraulic oil reaches control and enter dish from disc brake overflow valve overflow The purpose of brake mechanism and disc brake accumulator oil pressure size, in the present invention, the setting pressure of energy storage pilot operated directional control valve is less than The setting pressure of disc brake overflow valve realized overflow by disc brake overflow valve, such as in this way, energy storage pilot operated directional control valve is allowed to replace before this Fruit energy storage hydraulic control defective diverted valve, timely energy storage check valve input terminal has biggish pressure, but the pressure is if it is greater than dish The setting pressure of brake overflow valve, can play the role of overflow in the same old way, effectively protect disc brake control system.First switch is normally opened Setting, is in due course and stores the energy conversion in disc brake control system for compression energy, when disc brake control system needs When wanting, and compression energy is changed into hydraulic energy and is released, supply disc brake control system is mended again, when disc brake control system wink Between pressure increase when, the energy of this part can be absorbed in it, to guarantee that whole system pressure is normal.Such as the pressure in disc brake accumulator When power is more than the setting pressure of energy storage overflow valve, energy storage overflow valve connects hydraulic oil container to control the oil pressure of disc brake accumulator, tool There is safeguard protection effect.The normally closed setting of second switch, when the energy demand of disc brake accumulator releases or occur urgent superpressure When situation, second switch is opened into connection hydraulic oil container off-load, plays the role of overpressure protection to disc brake control system.

As shown in figure 13, disc brake commutation valve group 6002 includes disc brake two-position four-way solenoid directional control valve G01 and disc brake reversal valve The P mouth of group overflow valve G02, disc brake commutation valve group 6002 are connect with the output end of disc brake hydraulic pump 6001, disc brake commutation valve group 6002 T mouth connects hydraulic oil container, and the A mouth of disc brake commutation valve group 6002 connects disc brake accumulator valve block 6004, disc brake reversal valve The B mouth connection cooling system 9 of group 6002, P1 mouth and disc brake the commutation valve group overflow valve of disc brake two-position four-way solenoid directional control valve G01 1 end of G02 is connect with the P mouth of disc brake commutation valve group 6002, and the A1 mouth and disc brake of disc brake two-position four-way solenoid directional control valve G01 commutates The A mouth of the 2 ends connection disc brake commutation valve group 6002 of valve group overflow valve G02, the A1 mouth of disc brake two-position four-way solenoid directional control valve G01, 3 ends and 4 ends of disc brake commutation valve group overflow valve G02 are connect with the T mouth of disc brake commutation valve group 6002, and disc brake two-position four-way electromagnetism changes It is connect to the B1 mouth of valve G01 with the B mouth of disc brake commutation valve group 6002.In this way when superpressure in disc brake commutation valve group, changed by disc brake To valve group overflow valve G02 off-load, stablize disc brake control system.

As shown in figure 8, cooling system 9 includes cooling hydraulic pump 91 and two coolers 92, cooling hydraulic pump 91 and disc brake Hydraulic pump 6001 is driven by motor 200.Cooling 91 input terminal of hydraulic pump connects hydraulic oil container 1, cooling 91 output end of hydraulic pump with The input terminal connection of two coolers 92, the output end of cooler 92 connect hydraulic oil container 1.Cooler 92 is by cooling hydraulic motor The input terminal of 93 drivings, cooler hydraulic motor 93 is connect with the B mouth of disc brake commutation valve group 6002.Cooler hydraulic motor it is defeated Enter end to be also connected between disc brake commutation valve group 6002 and disc brake accumulator valve block 6004 by disc brake control shuttle valve 6003.In this way Cooling hydraulic pump 91 is from 1 draw oil of hydraulic oil container, and flow back hydraulic oil container 1 after two coolers cooling 92.When hydraulic Oil temperature is relatively high, needs to accelerate to cool down, and is replaced by solenoid valve control disc brake two-position four-way solenoid directional control valve G01, hydraulic oil Coolant liquid pressure motor 93 is driven to rotate after two-position four-way solenoid directional control valve G01, driving cooler 91 accelerates cooling, hydraulic oil Cooling is fast, prevents hydraulic oil overtemperature and crane hydraulic system is caused to break down.

As shown in fig. 6, the changing-breadth system 7 includes the first luffing hydraulic motor 71, the second luffing hydraulic motor 72, first Luffing balanced valve 73 and the second luffing balanced valve 74；7th reversal valve 37 and the 8th reversal valve 38 rise oil feed line by luffing 75 connect with one end of the first luffing hydraulic motor 71 and the second luffing hydraulic motor 72 respectively, the 7th reversal valve and the 8th commutation Valve declines the other end with the first luffing hydraulic motor 71 and the second luffing hydraulic motor 72 respectively of oil feed line 76 by luffing Connection rises in the luffing being connected to the first luffing hydraulic motor 71 and is equipped with the first luffing balanced valve 73 on oil feed line 75, rises To the effect of back pressure is provided, rises in the luffing being connected to the second luffing hydraulic motor 72 and be equipped with the second luffing on oil feed line 75 Balanced valve 74 plays the role of providing back pressure；First luffing hydraulic motor 71 and the second luffing hydraulic motor 72 are furnished with luffing horse Up to braking mechanism 77, luffing motor brake mechanism oil circuit 78 accesses luffing by luffing shuttle valve 79 and rises oil feed line 75 and luffing Decline oil feed line 76, luffing Aircraft Brake Decompression Valve 710 and luffing brake reversal valve are successively arranged on luffing braking mechanism oil circuit 78 711；Luffing check valve 712 is parallel at the both ends of concatenated luffing Aircraft Brake Decompression Valve 710 and luffing brake reversal valve 711；Become Width brake reversal valve 711 be control terminal be connected to luffing brake 711 input terminal of reversal valve two-position three way pilot operated directional control valve, first Luffing hydraulic motor 71 connects drain line 100,710 He of luffing Aircraft Brake Decompression Valve with the drain tap of the second luffing hydraulic motor 72 Luffing brake reversal valve 711 is equipped with the oil return line connecting with drain line 100；7th reversal valve 37 and the control of the 8th reversal valve 38 Hydraulic oil processed enters the flow direction that luffing rises oil feed line 75 and luffing decline oil feed line 76, thus the first luffing of control The rotation direction of hydraulic motor 71 and the second luffing hydraulic motor 72 realizes the raising and lowering movement of boom；First luffing is flat Weighing apparatus valve and the second luffing balanced valve guarantee the hydraulic fluid flow rate one for entering the first luffing hydraulic motor and the second luffing hydraulic motor It causes, so that the first luffing hydraulic motor of control and the second luffing hydraulic motor rotary speed are consistent；Luffing motor brake mechanism is in luffing Span winch movement is prevented when winch is failure to actuate always, prevents changing-breadth system from safety accident occurs；Luffing motor brake mechanism oil Road leads to luffing shuttle valve and obtains hydraulic oil, in this way, no matter hydraulic oil rises oil feed line from luffing or luffing declines oil feed line Into, can obtain hydraulic oil on luffing braking mechanism oil circuit, the hydraulic oil through luffing shuttle valve pass through luffing Aircraft Brake Decompression Valve The control terminal of decompression, the hydraulic oil control luffing brake reversal valve by decompression allows its automatic position-changing to make hydraulic oil from luffing Brake reversal valve enters luffing motor brake mechanism, and luffing motor brake mechanism obtains the power for pushing brake open, and brake is pushed open Span winch can work afterwards；Luffing check valve, luffing are parallel in luffing Aircraft Brake Decompression Valve and luffing brake reversal valve When the oil pressure that reversal valve comes out is excessive, luffing check valve is pushed open and flows back into the input terminal of luffing Aircraft Brake Decompression Valve being depressured, into One step protects changing-breadth system.

As shown in fig. 7, the dead rope system 8 includes dead rope hydraulic motor 81, dead rope balanced valve 82 and dead rope hydraulic motor Revolution speed control system 83；9th reversal valve 39 is connect by packing up oil feed line 84 with one end of dead rope hydraulic motor 81, and the 9th Reversal valve 38 by release oil feed line 85 connect with the other end of dead rope hydraulic motor 81, dead rope hydraulic motor 81 with pack up confession It is equipped with dead rope balanced valve 82 between oil pipe line 84, plays the role of providing back pressure；The dead rope hydraulic motor rotary speed control system 83 control the speed for releasing dead rope by controlling the discharge capacity of dead rope hydraulic motor 81.Hydraulic control proportional multi-way valve control hydraulic oil into Enter to pack up oil feed line 84 and release the flow direction of oil feed line 85, so that the rotation direction of dead rope hydraulic motor 81, is realized To dead rope pack up and releasing movement；The amplitude of the swing of main hook is controlled by the speed control packed up to dead rope, and dead rope Hydraulic motor rotary speed control system 83 accurately controls the speed for releasing dead rope according to the amplitude of fluctuation of live main hook, and playing prevents from leading Hook block shakes excessive when playing cargo.

The dead rope hydraulic motor rotary speed control system 83 includes that sequentially connected first dead rope overflow valve 8301, first is steady Rope two-position three way pilot operated directional control valve 8302, the second dead rope overflow valve 8303；The P mouth of first dead rope overflow valve 8301 passes through tension valve Block 86 is connect with oil feed line 84 is packed up, and the T mouth of the first dead rope overflow valve 8301 is connect with oil feed line 85 is released, the first dead rope The X mouth of overflow valve 8301 is connect with the first dead rope two-position three way pilot operated directional control valve 8302, the first dead rope two-position three way liquid controlled reversing Valve 8302 is connect with the second dead rope overflow valve 8303, and the second dead rope overflow valve 8303 is connected with hydraulic tank；First dead rope overflow The X mouth of valve 8301 is connected between tension valve block 86 and dead rope balanced valve 82 by bidirectional throttling valve 87；Packing up oil feed line It is connected with dead rope shuttle valve 88 between 84 and releasing oil feed line 85, the outlet end of dead rope shuttle valve 88 is connected with dead rope pressure reducing valve 89, The outlet end of dead rope pressure reducing valve 89 is connected to the control terminal of dead rope hydraulic motor 81, is connected in the outlet end of dead rope pressure reducing valve 89 Dead rope solenoid valve 810, dead rope solenoid valve 810 are connected to the control terminal of the first dead rope two-position three way pilot operated directional control valve 8302, meanwhile, Dead rope solenoid valve 810 is connected to hydraulic oil container.Dead rope balanced valve is set, when hydraulic oil is hydraulic from oil feed line driving dead rope is released When motor, back pressure can be provided by dead rope balanced valve, avoids dead rope hydraulic motor because of quick emptying.Dead rope solenoid valve not it is electric In the case where, the first dead rope two-position three way pilot operated directional control valve is failure to actuate, in this case, when the oil pressure for packing up oil feed line is more than Oil feed line emptying is released in first dead rope relief valve set pressure, the connection of the first dead rope overflow valve, and oil feed line is packed up in guarantee Oil pressure is stablized, and plays the role of protection to dead rope hydraulic motor.Dead rope hydraulic motor rotary speed control system is obtained by dead rope shuttle valve Hydraulic oil must be controlled, is depressurized by dead rope pressure reducing valve and guarantees that the oil pressure of output is stablized, obtain the control terminal institute of dead rope hydraulic motor The pressure needed controls dead rope hydraulic motor.If dead rope solenoid valve obtains electric signal, the first dead rope is connected in the transposition of dead rope solenoid valve The control terminal of two-position three way pilot operated directional control valve, the first dead rope two-position three way pilot operated directional control valve obtain the transposition of hydraulic control signal, and first is steady The X mouth of rope two-position three way pilot operated directional control valve and the first dead rope overflow valve is connected, and hydraulic oil flows back after the second dead rope overflow valve Hydraulic oil container, by adjusting the flow of the second dead rope overflow valve control reflux hydraulic oil container hydraulic oil, it is hydraulic that control enters dead rope The oil pressure of motor, to realize the purpose of the speed of control dead rope.In this way by the elastic of control dead rope, stablizes main hook, prevent Main hook lifts cargo and shakes big, generation safety accident.

The working method of above-mentioned crane hydraulic system includes the work of the working method, main hoisting system 5 of rotary system 4 Working method, the working method of the working method of changing-breadth system 7 and dead rope system 8 of method, secondary hoisting system 6；

The working method of rotary system 4 includes left revolution working method and right-hand rotation working method；

Left revolution working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, in Main Hydraulic Pump Under the action of 21, hydraulic oil is pumped into the first rotary fluid motor 41 and the second rotary fluid motor in control rotary system 4 The input terminal of 42 hydraulic control proportional multi-way valve 30；Then to the first rotary fluid motor 41 in control rotary system 4 and second time 30 left rotaring signal of hydraulic control proportional multi-way valve of rotating hydraulic motor 42 controls the first rotary fluid motor 41 and the in rotary system 4 The hydraulic control proportional multi-way valve 30 of two-revolution hydraulic motor 42 is opened, hydraulic oil first hydraulic horse of revolution from control rotary system 4 Up to 41 and second the hydraulic control proportional multi-way valve 30 of rotary fluid motor 42 have respectively entered the first revolution through oil feed line 47 to the left In hydraulic motor 41 and the second rotary fluid motor 42, by the first rotary fluid motor 41 and the second rotary fluid motor 42 Hydraulic oil is from oil feed line 46 to the left through the first rotary fluid motor 41 and the second rotary fluid motor 42 in control rotary system 4 Hydraulic control proportional multi-way valve 30 return to hydraulic oil container 1, work in the first rotary fluid motor 41 and the second rotary fluid motor 42 While, a part of hydraulic oil of oil feed line 47 enters in revolution brake line to the left, enters in revolution brake line Hydraulic oil entered in revolution brake reversal valve 49 by turning round Aircraft Brake Decompression Valve 48, the hydraulic oil in revolution brake line Under effect, the revolution brake transposition of reversal valve 49, the hydraulic oil turned round in brake line brakes from revolution brake reversal valve 49, revolution Speed governing valve 40 enters in revolution braking mechanism 413, and revolution braking mechanism 413 is opened；If controlling in rotary system 4 first time The hydraulic control proportional multi-way valve 30 of rotating hydraulic motor 41 and the second rotary fluid motor 42 resets, the first rotary fluid motor 41 and the Two-revolution hydraulic motor 42 stops working, meanwhile, fuel cut-off on brake line is turned round, revolution brake reversal valve 49 is resetted, returned Turn hydraulic oil in braking mechanism 413 and unload through revolution brake speed governing valve 40 from revolution brake reversal valve 49 to remove, turns round braking machine Structure 413 resets the first rotary fluid motor 41 of limitation and the rotation of the second rotary fluid motor 42；

Right-hand rotation working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, in Main Hydraulic Pump Under the action of 21, hydraulic oil is pumped into the first rotary fluid motor 41 and the second rotary fluid motor in control rotary system 4 The input terminal of 42 hydraulic control proportional multi-way valve 30；Then to the first rotary fluid motor 41 in control rotary system 4 and second time 30 right turn signal of hydraulic control proportional multi-way valve of rotating hydraulic motor 42 controls the first rotary fluid motor 41 and the in rotary system 4 The hydraulic control proportional multi-way valve 30 of two-revolution hydraulic motor 42 is opened, hydraulic oil first hydraulic horse of revolution from control rotary system 4 Up to 41 and second the hydraulic control proportional multi-way valve 30 of rotary fluid motor 42 have respectively entered the first revolution through oil feed line 46 to the right In hydraulic motor 41 and the second rotary fluid motor 42, by the first rotary fluid motor 41 and the second rotary fluid motor 42 Hydraulic oil is from oil feed line 47 to the left through the first rotary fluid motor 41 and the second rotary fluid motor 42 in control rotary system 4 Hydraulic control proportional multi-way valve 30 return to hydraulic oil container 1, work in the first rotary fluid motor 41 and the second rotary fluid motor 42 While, a part of hydraulic oil of oil feed line 46 enters in revolution brake line to the right, enters in revolution brake line Hydraulic oil entered in revolution brake reversal valve 49 by turning round Aircraft Brake Decompression Valve 48, the hydraulic oil in revolution brake line Under effect, the revolution brake transposition of reversal valve 49, the hydraulic oil turned round in brake line brakes from revolution brake reversal valve 49, revolution Speed governing valve 40 enters in revolution braking mechanism 413, and revolution braking mechanism 413 is opened；If controlling in rotary system 4 first time The hydraulic control proportional multi-way valve 30 of rotating hydraulic motor 41 and the second rotary fluid motor 42 resets, the first rotary fluid motor 41 and the Two-revolution hydraulic motor 42 stops working, meanwhile, fuel cut-off on brake line is turned round, revolution brake reversal valve 49 is resetted, returned Turn hydraulic oil in braking mechanism 413 and unload through revolution brake speed governing valve 40 from revolution brake reversal valve 49 to remove, turns round braking machine Structure 413 resets the first rotary fluid motor 41 of limitation and the rotation of the second rotary fluid motor 42；

The working method of main hoisting system 5 includes main raising working method and main decline working method；

Main raising working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, in Main Hydraulic Pump Under the action of 21, hydraulic oil is pumped into the input for controlling the hydraulic control proportional multi-way valve 30 of main lifting motor in main hoisting system 5 End；Then to the 30 raising signal of hydraulic control proportional multi-way valve for controlling main lifting motor in main hoisting system 5, main hoisting system is controlled The hydraulic control proportional multi-way valve 30 of main lifting motor is opened in 5, the hydraulic control of hydraulic oil main lifting motor from the main hoisting system 5 of control Proportional multi-way valve 30 enters in main lifting motor 51 through main hook riser culverts 52, back-pressure balance valve 55, by main lifting motor 51 hydraulic oil declines pipeline 53 from main hook and returns through controlling the hydraulic control proportional multi-way valve 30 of main lifting motor 51 in main hoisting system 5 To hydraulic oil container 1, while the work of main lifting motor 51, a part of hydraulic oil of main hook riser culverts 52 is by main raising shuttle valve 58 open, and the hydraulic oil into main raising shuttle valve 58 enters main raising brake reversal valve 510 through main raising Aircraft Brake Decompression Valve 59, The hydraulic oil for reaching main raising brake reversal valve 510 allows main raising brake to change by the control terminal of main raising brake reversal valve 510 It replaces to valve 510, the hydraulic oil for entering main raising brake reversal valve 510 enters master by main raising brake reversal valve 510 Raising braking mechanism 56 opens main raising braking mechanism 56；If controlling the hydraulic control ratio of main lifting motor 51 in main hoisting system 5 Example multi-way valve 30 resets, and main lifting motor 51 stops working, meanwhile, fuel cut-off on main lifting motor brake line, main raising The reversal valve 510 that brakes resets, and the hydraulic oil in main raising braking mechanism 56 is unloaded through main raising brake reversal valve 510 and removed, and leads It rises motor brake reset and limits the main rotation of lifting motor 51；

Main decline working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, in Main Hydraulic Pump Under the action of 21, hydraulic oil is pumped into and controls the defeated of the hydraulic control proportional multi-way valve 30 of main lifting motor 51 in main hoisting system 5 Enter end；Then to 30 dropping signal of hydraulic control proportional multi-way valve for controlling main lifting motor 51 in main hoisting system 5, main raising is controlled The hydraulic control proportional multi-way valve 30 of main lifting motor 51 is opened in system 5, hydraulic oil main lifting motor from the main hoisting system 5 of control 51 hydraulic control proportional multi-way valve 30 enters in main lifting motor 51 through main hook decline pipeline 53, by the liquid of main lifting motor 51 Hydraulic control ratio of the pressure oil from back-pressure balance valve 55, main hook riser culverts 52 through controlling main lifting motor 51 in main hoisting system 5 is more Road valve 30 returns to hydraulic oil container 1, and while the work of main lifting motor 51, a part of hydraulic oil of main hook decline pipeline 53 will be led Raising shuttle valve 58 is opened, and the hydraulic oil into main raising shuttle valve 58 enters the brake of main raising through main raising Aircraft Brake Decompression Valve 59 and changes To valve 510, the hydraulic oil for reaching main raising brake reversal valve 510 is allowed by the control terminal of main raising brake reversal valve 510 to be led It rises brake reversal valve 510 to replace, the hydraulic oil for entering main raising brake reversal valve 510 passes through main raising brake reversal valve 510 Main raising braking mechanism 56 is entered, main raising braking mechanism 56 is opened；If controlling main lifting motor 51 in main hoisting system 5 Hydraulic control proportional multi-way valve 30 reset, main lifting motor 51 stops working, meanwhile, stop supplying on main lifting motor brake line Oil, main raising brake reversal valve 510 reset, and the hydraulic oil in main raising braking mechanism 56 is unloaded through main raising brake reversal valve 510 It removes, main 51 braking mechanism of lifting motor, which resets, limits the main rotation of lifting motor 51；

The working method of secondary hoisting system 6 includes secondary rising working method and secondary decline working method:

Pair rises working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, in Main Hydraulic Pump Under the action of 21, hydraulic oil is pumped into and controls the hydraulic control proportional multi-way valve 30 of secondary raising hydraulic motor in secondary hoisting system 6 Input terminal；Then to the 30 raising signal of hydraulic control proportional multi-way valve for controlling secondary raising hydraulic motor in secondary hoisting system 6, control is secondary The hydraulic control proportional multi-way valve 30 of secondary raising hydraulic motor is opened in hoisting system 6, and hydraulic oil is from pair in the secondary hoisting system 6 of control The hydraulic control proportional multi-way valve 30 for rising hydraulic motor enters in secondary raising hydraulic motor 61 through auxiliary hook riser culverts 63, and at least one is secondary The hydraulic oil of raising hydraulic motor 61 is more from the hydraulic control ratio for controlling secondary raising hydraulic motor 61 in secondary hoisting system 6 through stabilization valve Road valve 30 returns to hydraulic oil container 1, and the hydraulic oil of other pair raising hydraulic motors 61 is by controlling secondary raising in secondary hoisting system 6 The hydraulic control proportional multi-way valve 30 of hydraulic motor 61 returns to hydraulic oil container 1；While the work of secondary raising hydraulic motor 61, on auxiliary hook A part of hydraulic oil on riser road 63 opens secondary raising shuttle valve 610, and the hydraulic oil into secondary raising shuttle valve 610 is stopped through secondary raising Vehicle pressure reducing valve 611 enters secondary raising brake reversal valve 612, and the hydraulic oil for reaching secondary raising brake reversal valve 612 is risen by secondary The control terminal for rising brake reversal valve 612 allows secondary raising brake reversal valve 612 to replace, and enters secondary raising brake reversal valve 612 Hydraulic oil passes through secondary raising brake reversal valve 612 and enters secondary lifting motor braking mechanism 67, by secondary lifting motor braking mechanism 67 open, by disc brake control system by disc brake mechanism opening；If controlling the liquid of secondary raising hydraulic motor 61 in secondary hoisting system 6 Proportional multi-way valve 30 to be controlled to reset, secondary raising hydraulic motor 61 stops working, meanwhile, stop supplying on secondary lifting motor brake line Oil, secondary raising brake reversal valve 612 reset, and the hydraulic oil in secondary lifting motor braking mechanism 67 is through secondary raising brake reversal valve 612 unload and remove, while unloading the hydraulic oil of disc brake mechanism by disc brake control system and removing, secondary 67 He of lifting motor braking mechanism Disc brake reset limits secondary raising hydraulic motor 61 and rotates；

Pair decline working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, in Main Hydraulic Pump Under the action of 21, hydraulic oil is pumped into the hydraulic control proportional multi-way valve 30 for controlling secondary raising hydraulic motor 61 in secondary hoisting system 6 Input terminal；Then to 30 dropping signal of hydraulic control proportional multi-way valve for controlling secondary raising hydraulic motor 61 in secondary hoisting system 6, control The hydraulic control proportional multi-way valve 30 for making secondary raising hydraulic motor 61 in secondary hoisting system 6 is opened, and hydraulic oil is from controlling secondary hoisting system 6 The hydraulic control proportional multi-way valve 30 of middle pair raising hydraulic motor 61 enters in secondary raising hydraulic motor 61 through auxiliary hook decline pipeline 64, Wherein, the hydraulic oil of at least one secondary raising hydraulic motor 61 is flowed into from stabilization valve, by the hydraulic oil of secondary raising hydraulic motor 61 Hydraulic oil container 1 is returned to from the hydraulic control proportional multi-way valve 30 for controlling secondary raising hydraulic motor 61 in secondary hoisting system 6；In secondary raising liquid While pressure motor 61 works, a part of hydraulic oil of auxiliary hook decline pipeline 64 opens secondary raising shuttle valve 610, into secondary raising The hydraulic oil of shuttle valve 610 enters secondary raising brake reversal valve 612 through secondary raising Aircraft Brake Decompression Valve 611, reaches secondary raising brake The hydraulic oil of reversal valve 612 allows secondary raising brake reversal valve 612 to replace by the control terminal of secondary raising brake reversal valve 612, into The hydraulic oil entered to secondary raising brake reversal valve 612 enters secondary lifting motor braking machine by secondary raising brake reversal valve 612 Structure 67 opens secondary lifting motor braking mechanism 67, is opened disc brake mechanism 68 by disc brake control system；If controlling secondary raising The hydraulic control proportional multi-way valve 30 of secondary raising hydraulic motor 61 resets in system 6, and secondary raising hydraulic motor 61 stops working, meanwhile, Fuel cut-off on secondary lifting motor brake line, secondary raising brake reversal valve 612 resets, in secondary lifting motor braking mechanism 67 Hydraulic oil is unloaded through secondary raising brake reversal valve 612 and is removed, while being unloaded the hydraulic oil of disc brake mechanism 68 by disc brake control system It removes, secondary lifting motor braking mechanism 67 and disc brake mechanism 68 reset and limit secondary 61 rotation of raising hydraulic motor；

The working method of changing-breadth system 7 includes that luffing rises working method and luffing decline working method:

Luffing rises working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, hydraulic in master Under the action of pump 21, hydraulic oil is pumped into the first luffing hydraulic motor 71 and the hydraulic horse of the second luffing in control changing-breadth system 7 Up to the input terminal of 72 hydraulic control proportional multi-way valve 30；Then to the first luffing hydraulic motor 71 and second in control changing-breadth system 7 30 rising signals of hydraulic control proportional multi-way valve of luffing hydraulic motor 72 control 71 He of the first luffing hydraulic motor in changing-breadth system 7 The hydraulic control proportional multi-way valve 30 of second luffing hydraulic motor 72 is opened, and hydraulic oil first luffing from control changing-breadth system 7 is hydraulic The hydraulic control proportional multi-way valve 30 of motor 71 and the second luffing hydraulic motor 72 rises oil feed line 75 through luffing and has respectively entered the In one luffing hydraulic motor 71 and the second luffing hydraulic motor 72, by the first luffing hydraulic motor 71 and the hydraulic horse of the second luffing Hydraulic oil up to 72 passes through the hydraulic control ratio of the first luffing hydraulic motor 71 and the second luffing hydraulic motor 72 in control changing-breadth system 7 Example multi-way valve 30 returns to hydraulic oil container 1；While the first luffing hydraulic motor 71 and the second luffing hydraulic motor 72 work, become A part of hydraulic oil that width rises oil feed line 75 opens luffing shuttle valve 79, and the hydraulic oil into luffing shuttle valve 79 is stopped through luffing Vehicle pressure reducing valve 710 enters luffing brake reversal valve 711, and the hydraulic oil for reaching luffing brake reversal valve 711 is braked by luffing The control terminal of reversal valve 711 allows luffing brake reversal valve 711 to replace, and the hydraulic oil for entering luffing brake reversal valve 711 passes through Luffing brake reversal valve 711 enters luffing motor brake mechanism 77, and luffing motor brake mechanism 77 is opened；If controlling luffing The hydraulic control proportional multi-way valve 30 of first luffing hydraulic motor 71 and the second luffing hydraulic motor 72 resets in system 7, and first and the Two luffing hydraulic motors stop working, meanwhile, fuel cut-off on luffing motor brake oil circuit, luffing brake reversal valve 711 resets, Hydraulic oil in luffing motor brake mechanism 77 is unloaded through luffing brake reversal valve 711 to be removed, and luffing motor brake mechanism 77 resets Limit the rotation of the first and second luffing hydraulic motors 72；

Luffing declines working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, hydraulic in master Under the action of pump 21, hydraulic oil is pumped into the first luffing hydraulic motor 71 and the hydraulic horse of the second luffing in control changing-breadth system 7 Up to the input terminal of 72 hydraulic control proportional multi-way valve 30；Then to the first luffing hydraulic motor 71 and second in control changing-breadth system 7 30 dropping signal of hydraulic control proportional multi-way valve of luffing hydraulic motor 72 controls 71 He of the first luffing hydraulic motor in changing-breadth system 7 The hydraulic control proportional multi-way valve 30 of second luffing hydraulic motor 72 is opened, and hydraulic oil first luffing from control changing-breadth system 7 is hydraulic The hydraulic control proportional multi-way valve 30 of motor 71 and the second luffing hydraulic motor 72 has respectively entered the through luffing decline oil feed line 76 In one luffing hydraulic motor 71 and the second luffing hydraulic motor 72, by the first luffing hydraulic motor 71 and the hydraulic horse of the second luffing Hydraulic oil up to 72 passes through the hydraulic control ratio of the first luffing hydraulic motor 71 and the second luffing hydraulic motor 72 in control changing-breadth system 7 Example multi-way valve 30 returns to hydraulic oil container 1；While the first luffing hydraulic motor 71 and the second luffing hydraulic motor 72 work, become A part of hydraulic oil of width decline oil feed line 76 opens luffing shuttle valve 79, and the hydraulic oil into luffing shuttle valve 79 is stopped through luffing Vehicle pressure reducing valve 710 enters luffing brake reversal valve 711, and the hydraulic oil for reaching luffing brake reversal valve 711 is braked by luffing The control terminal of reversal valve 711 allows luffing brake reversal valve 711 to replace, and the hydraulic oil for entering luffing brake reversal valve 711 passes through Luffing brake reversal valve 711 enters luffing motor brake mechanism 77, and luffing motor brake mechanism 77 is opened；If controlling luffing The hydraulic control proportional multi-way valve 30 of first luffing hydraulic motor 71 and the second luffing hydraulic motor 72 resets in system 7, and first and the Two luffing hydraulic motors stop working, meanwhile, fuel cut-off on luffing motor brake oil circuit, luffing brake reversal valve 711 resets, Hydraulic oil in luffing motor brake mechanism 77 is unloaded through luffing brake reversal valve 711 to be removed, and luffing motor brake mechanism 77 resets Limit the rotation of the first and second luffing hydraulic motors 72；

The working method of dead rope system 8 includes that dead rope packs up working method and dead rope releasing working method；

Dead rope packs up working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, hydraulic in master Under the action of pump 21, hydraulic oil is pumped into the hydraulic control proportional multi-way valve 30 of control 8 midship guy hydraulic motor 81 of dead rope system Input terminal；Then signal is packed up to the hydraulic control proportional multi-way valve 30 of control 8 midship guy hydraulic motor 81 of dead rope system, controls dead rope The hydraulic control proportional multi-way valve 30 of 8 midship guy hydraulic motor 81 of system is opened, and hydraulic oil is from the control hydraulic horse of 8 midship guy of dead rope system Up to 81 hydraulic control proportional multi-way valve 30 packed up oil feed line 84, dead rope balanced valve 82 enters in dead rope hydraulic motor 81, warp The hydraulic oil crossed in dead rope hydraulic motor 81 is released liquid of the oil feed line 85 from control 8 midship guy hydraulic motor 81 of dead rope system Control proportional multi-way valve 30 returns to hydraulic oil container 1；It is hydraulic that dead rope is controlled by 81 revolution speed control system 83 of dead rope hydraulic motor simultaneously The discharge capacity of motor 81 packs up the speed of dead rope to control；

Dead rope releases working method are as follows: starting motor 200 first, motor 200 drives Main Hydraulic Pump 21 to work, hydraulic in master Under the action of pump 21, hydraulic oil is pumped into the hydraulic control proportional multi-way valve 30 of control 8 midship guy hydraulic motor 81 of dead rope system Input terminal；Then signal is released to the hydraulic control proportional multi-way valve 30 of control 8 midship guy hydraulic motor 81 of dead rope system, controls dead rope The hydraulic control proportional multi-way valve 30 of 8 midship guy hydraulic motor 81 of system is opened, and hydraulic oil is from the control hydraulic horse of 8 midship guy of dead rope system Hydraulic control proportional multi-way valve 30 up to 81 enters in dead rope hydraulic motor 81 through releasing oil feed line 85, by dead rope hydraulic motor Hydraulic oil in 81 through dead rope balanced valve 82, release liquid of the oil feed line 85 from control 8 midship guy hydraulic motor 81 of dead rope system Control proportional multi-way valve 30 returns to hydraulic oil container 1.

The utility model have compared with prior art it is following the utility model has the advantages that

1, main hoister winch, secondary main hoister winch, span winch, swing mechanism and dead rope winch are by independent hydraulic pressure system System control, independence is good, high reliablity；

2, main hoister winch, secondary main hoister winch, span winch, swing mechanism and dead rope winch are respectively provided with braking mechanism, Ensure the safe operation of crane.

3, setting dead rope system 8 stablizes crane main hook, and shaking when preventing main hook from slinging cargo is reduced due to cargo shakes The impact to crane hydraulic system generated, improves the safety of crane hydraulic system.

4, rotary system 4, main hoisting system 5, secondary hoisting system 6 are respectively provided with confluence valve block, guarantee the hydraulic of same system Motor operations are synchronous, increase the stationarity of crane hydraulic system.

5, secondary raising hydraulic system setting disc brake control system further ensures that when crane hangs people and is lifted people's Personal safety.

Claims (8)

1. a kind of crane hydraulic system, it is characterised in that: including hydraulic oil container, main pump component, switch block, be used to drive back The rotary system of rotation mechanism, the main hoisting system for driving main hoister winch, the secondary raising system for driving secondary hoister winch System, the changing-breadth system for driving span winch and the dead rope system for driving dead rope winch；

The input terminal of the main pump component is connected with hydraulic tank, the output end of the main pump component by switch block respectively to Changing-breadth system, main hoisting system, secondary hoisting system, rotary system and dead rope system fuel feeding；

The main pump component includes more than one Main Hydraulic Pump, and all Main Hydraulic Pumps are driven by same motor；

The switch block is hydraulic control proportional multi-way valve；

The rotary system includes the first rotary fluid motor, the second rotary fluid motor, the first revolution balance valve group, second time Turn balance valve group and revolution brake line；Hydraulic control proportional multi-way valve by fuel feed pump to the right respectively with the hydraulic horse of the first revolution and the One end of two-revolution hydraulic motor connects, hydraulic control proportional multi-way valve by fuel feed pump to the left respectively with the hydraulic horse of the first revolution and the The other end of two-revolution hydraulic motor connects, the fuel feed pump to the right of the first rotary fluid motor and the second rotary fluid motor to It is equipped with the first revolution between left fuel feed pump and balances valve group, the fuel feed pump to the left of the first rotary fluid motor and the second hydraulic horse of revolution It is equipped with the second revolution between the fuel feed pump to the right reached and balances valve group, the hydraulic horse of the first revolution and the second rotary fluid motor are matched respectively There is revolution braking mechanism, is equipped with revolution brake line between the first revolution balance valve group and revolution braking mechanism, turns round brake pipe Road is successively arranged revolution Aircraft Brake Decompression Valve, revolution brake reversal valve and revolution brake speed governing valve；

The main hoisting system includes main lifting motor, main pump component by hydraulic control proportional multi-way valve to main lifting motor fuel feeding, Hydraulic control proportional multi-way valve is connect by main hook riser culverts with main lifting motor one end, and hydraulic control proportional multi-way valve is declined by main hook Pipeline is connect with the main lifting motor other end；Back-pressure balance valve is connected between main lifting motor and main hook riser culverts；It is main It is furnished with main lifting motor braking mechanism on lifting motor, main lifting motor braking mechanism oil circuit accesses main hook by main raising shuttle valve Riser culverts and main hook decline pipeline；It is successively arranged main raising Aircraft Brake Decompression Valve on main lifting motor braking mechanism oil circuit and leads Rise brake reversal valve；Main raising check valve is parallel in main raising Aircraft Brake Decompression Valve and main raising reversal valve；

The pair hoisting system includes secondary raising hydraulic motor and stabilization valve；Hydraulic control proportional multi-way valve by auxiliary hook riser culverts with The connection of secondary raising hydraulic motor one end, hydraulic control proportional multi-way valve decline the other end of pipeline and secondary raising hydraulic motor by auxiliary hook Connection, auxiliary hook, which declines, is equipped with stabilization valve between pipeline and secondary raising hydraulic motor；Secondary raising hydraulic motor is furnished with secondary lifting motor Braking mechanism and disc brake mechanism, secondary lifting motor braking mechanism oil circuit pass through secondary raising shuttle valve and access auxiliary hook riser culverts and auxiliary hook Decline pipeline, secondary raising Aircraft Brake Decompression Valve and secondary raising brake reversal valve are successively arranged on secondary raising braking mechanism oil circuit；In pair Raising Aircraft Brake Decompression Valve and the secondary raising brake concatenated both ends of reversal valve are parallel with secondary raising check valve；In hydraulic oil container and disc brake Disc brake control system is equipped between mechanism, disc brake control system is declined with auxiliary hook riser culverts and auxiliary hook respectively by disc brake shuttle valve Pipeline connection；The stabilization valve includes spool, the valve body being located in spool, spring and pushing block, and spool has A mouthfuls and B mouthfuls, valve In-core have with A mouthful and the B mouthfuls of valve chambers communicated, A mouthfuls with pair raising hydraulic motor communicate, B mouthfuls with auxiliary hook decline pipeline communicate, push away Block is located in valve chamber, and spring is located between spool and pushing block, and in a non-operative state, spool is blocked under the action of the spring in B At mouthful, A mouthfuls communicate with valve chamber；

The changing-breadth system includes the first luffing hydraulic motor, the second luffing hydraulic motor, the first secondary luffing balanced valve and second Luffing balanced valve；Hydraulic control proportional multi-way valve by luffing rise oil feed line respectively with the first luffing hydraulic motor and the second luffing One end of hydraulic motor connects, hydraulic control proportional multi-way valve by luffing decline oil feed line respectively with the first luffing hydraulic motor and The other end of second luffing hydraulic motor connects, and rises in the luffing being connected to the first luffing hydraulic motor and is equipped on oil feed line First luffing balanced valve rises in the luffing being connected to the second luffing hydraulic motor and is equipped with the second luffing balance on oil feed line Valve；First luffing hydraulic motor and the second luffing hydraulic motor are furnished with luffing motor brake mechanism, luffing motor brake mechanism oil Road accesses luffing by luffing shuttle valve and rises oil feed line and luffing decline oil feed line, successively sets on luffing braking mechanism oil circuit There are luffing Aircraft Brake Decompression Valve and luffing brake reversal valve；At the both ends of concatenated luffing Aircraft Brake Decompression Valve and luffing brake reversal valve It is parallel with luffing check valve；

The dead rope system includes dead rope hydraulic motor, dead rope balanced valve and dead rope hydraulic motor rotary speed control system；Hydraulic control ratio Example multi-way valve is connect by packing up oil feed line with one end of dead rope hydraulic motor, and hydraulic control proportional multi-way valve is by releasing fuel feed pump Road is connect with the other end of dead rope hydraulic motor, dead rope hydraulic motor and pack up between oil feed line be equipped with dead rope balanced valve；Institute Dead rope hydraulic motor rotary speed control system is stated by controlling the discharge capacity of dead rope hydraulic motor to control the speed for releasing dead rope.

2. a kind of crane hydraulic system according to claim 1, it is characterised in that: the first rotary fluid motor is to the right More than one valve block of converging to the right, the first revolution are connected between fuel feed pump and the fuel feed pump to the right of the second rotary fluid motor It is connected with and more than one converges between the fuel feed pump to the left of hydraulic motor and the fuel feed pump to the left of the second rotary fluid motor to the left Flow valve block.

3. a kind of crane hydraulic system according to claim 1, it is characterised in that: there are four main lifting motor settings, The main hook riser culverts of four main lifting motors are interconnected by the first main raising confluence valve block, the master of four main lifting motors Hook declines pipeline and is interconnected by the second main raising confluence valve block.

4. a kind of crane hydraulic system according to claim 1, it is characterised in that: secondary raising hydraulic motor is provided with two A, the auxiliary hook riser culverts of two secondary raising hydraulic motors are interconnected by the first secondary raising confluence valve block, two secondary raisings The auxiliary hook decline pipeline of hydraulic motor is interconnected by the second secondary raising confluence valve block.

5. a kind of crane hydraulic system according to claim 1, it is characterised in that: disc brake control system includes disc brake liquid Press pump, disc brake commutation valve group, disc brake control shuttle valve, disc brake accumulator valve block, disc brake accumulator, Y type three position four-way directional control valve, dish Brake pilot operated directional control valve, disc brake oil inlet emptying shuttle valve and triple valve；The input terminal of disc brake hydraulic pump is connected to hydraulic oil container, disc brake liquid The output end of press pump is connected to disc brake commutation valve group, and two input terminals of disc brake control shuttle valve are connected to disc brake commutation valve group, disc brake The output end of control shuttle valve is connected to disc brake accumulator valve block, and disc brake accumulator is connected to disc brake accumulator valve block, disc brake energy storage The output end of device valve block is connected to the P mouth of 1 end of triple valve and Y type three position four-way directional control valve respectively, Y type three position four-way directional control valve A mouth be connected to the first end of disc brake oil inlet emptying shuttle valve, the B mouth and the 2 of disc brake pilot operated directional control valve of Y type three position four-way directional control valve Mouth connection, 3 mouthfuls of disc brake pilot operated directional control valve are connected to the second end of disc brake oil inlet emptying shuttle valve, and 4 mouthfuls of disc brake pilot operated directional control valve It is connected to hydraulic oil container, 3 mouthfuls of disc brake pilot operated directional control valve are connected to 4 mouthfuls, the control terminal and disc brake shuttle valve of disc brake pilot operated directional control valve Output end connection, disc brake oil inlet emptying shuttle valve be connected to 3 ends of triple valve, 2 ends of triple valve and disc brake mechanism connection.

6. a kind of crane hydraulic system according to claim 5, it is characterised in that: the disc brake accumulator valve block packet It is unidirectional to include energy storage check valve, energy storage pilot operated directional control valve, first switch, second switch, energy storage overflow valve and disc brake overflow valve, energy storage The input terminal of valve is connected to the output end of disc brake control shuttle valve, the control of the output end and energy storage pilot operated directional control valve of energy storage check valve End connection, while the output end of energy storage check valve is connected to the P mouth of 1 end of triple valve and Y type three position four-way directional control valve, energy storage list It is connected to the output end of valve by first switch with disc brake accumulator, disc brake accumulator is connected by energy storage overflow valve and hydraulic oil container Logical, disc brake accumulator is connected to by second switch with hydraulic oil container, and the input terminal of energy storage check valve passes through disc brake overflow valve and liquid The connection of pressure oil case, disc brake overflow valve are connected to by energy storage pilot operated directional control valve with hydraulic oil container.

7. a kind of crane hydraulic system according to claim 1, it is characterised in that: the dead rope hydraulic motor rotary speed control System processed includes sequentially connected first dead rope overflow valve, the first dead rope two-position three way pilot operated directional control valve, the second dead rope overflow valve； The P mouth of first dead rope overflow valve is connect by tension valve block with oil feed line is packed up, and the T mouth of the first dead rope overflow valve and releasing supply Oil pipe line connection, the X mouth of the first dead rope overflow valve are connect with the first dead rope two-position three way pilot operated directional control valve, the first dead rope two three Logical pilot operated directional control valve is connect with the second dead rope overflow valve, and the second dead rope overflow valve is connected with hydraulic tank；First dead rope overflow valve X mouth be connected between tension valve block and dead rope balanced valve by bidirectional throttling valve；It is packing up oil feed line and is releasing fuel feed pump Dead rope shuttle valve is connected between road, the outlet end of dead rope shuttle valve is connected with dead rope pressure reducing valve, the outlet end connection of dead rope pressure reducing valve To the control terminal of dead rope hydraulic motor, it is connected with dead rope solenoid valve in the outlet end of dead rope pressure reducing valve, dead rope solenoid valve is connected to The control terminal of first dead rope two-position three way pilot operated directional control valve, meanwhile, dead rope solenoid valve is connected to hydraulic oil container.

8. a kind of crane hydraulic system according to claim 1, it is characterised in that: the hydraulic control proportional multi-way valve includes Control the first reversal valve and the second reversal valve of the first rotary fluid motor and the second rotary fluid motor in rotary system, control The third reversal valve of main lifting motor and the 4th reversal valve in main hoisting system control secondary raising hydraulic motor in secondary hoisting system The 5th reversal valve and the 6th reversal valve, control changing-breadth system in the first luffing hydraulic motor and the second luffing hydraulic motor the Seven reversal valves and the 8th reversal valve and the 9th reversal valve for controlling dead rope system midship guy hydraulic motor；Wherein, first, second, Third, the four, the five, the six, the seven, the 8th and the 9th are three seven logical pilot operated directional control valves.