CN102173367B - Stern hydraulic rudder installing walking trolley - Google Patents
Stern hydraulic rudder installing walking trolley Download PDFInfo
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- CN102173367B CN102173367B CN 201110051703 CN201110051703A CN102173367B CN 102173367 B CN102173367 B CN 102173367B CN 201110051703 CN201110051703 CN 201110051703 CN 201110051703 A CN201110051703 A CN 201110051703A CN 102173367 B CN102173367 B CN 102173367B
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Abstract
The invention discloses a stern hydraulic rudder installing walking trolley in the shipbuilding technical field. The walking trolley comprises a main platform, rolling wheels, a pair of plane sliding tables and corresponding installation floor stands, wherein the two plane sliding tables are respectively and movably arranged at the left and the right sides of the main platform; the rolling wheels driven by four hydraulic motors are respectively and fixedly arranged at four vertex angles under the main platform; and the installation floor stands are respectively and fixedly arranged on the corresponding plane sliding tables. The walking trolley disclosed by the invention meets the installation requirements on the ship rudder blade and the screw propeller, improves the installment efficiency, avoids potential safety hazards, shortens the using period of the unit ship and improves the shipbuilding efficiency.
Description
Technical field
What the present invention relates to is a kind of device of shipbuilding technical field, and specifically a kind of ship stern hydraulic pressure oar rudder is installed walking carriage.
Background technology
Along with the development of ship building technology, ship building same period, build guality is built safety and all is greatly improved, and tonneaux de jauge presents to become great development situation, and Description of Ship is much more next year, in the urgent need to reliable, safety, and stable, easy construction equipment.Shipping rudder blade, propeller for vessels are the boats and ships major parts, it is characterized in that volume is large, and quality is large, biggest quality more than 100 tons per/, the installation of screw propeller and rudder blade and hull is all carried out at the ship stern, and namely installing space is subjected to the restriction of ship stern structure, can not adopt large-scale building berth or sluice to lift up into row and install.
Prior art has two kinds, and a kind of is to adopt original straightforward procedure.Shell at ship stern position to be installed welds the code that hangs of several loop wheel machines first, steel rope or a heave hand are carefully tied rudder blade or screw propeller, utilize the loop wheel machine that temporarily is assembled into to rise and winch to the installation position, the operative employee cooperates installation at interim scaffold through actions such as pushing away, move, carry.General rudder blade and the screw propeller that a ship is installed needs two time-of-weeks approximately, installation effectiveness is extremely low, and the safety extreme difference is installed, and the back work amount is very large, and cause and hang the work capacity increase that code welds and cuts with the hull housing, polishes, also bring the potential safety hazard to the hull quality influence.The service efficiency of the dock that this installation method is also greatly wasted has not generally adopted this kind installation method at large-scale shipyard.
Another kind of Korea S's water mountain secret service (SOOSAN) is the ship stern walking carriage device of representative.This kind device mainly comprises scalene rectangle walking carriage, walking carriage is finished the lifting of walking carriage by four jiaos of four hydraulic fluid cylinder pressures, the below have four rotatable 90 ° respectively by the scroll wheel of fluid motor-driven, by guarantee after 90 ° of the artificial turns walking carriage laterally or vertically move, a both sides sliding stand is installed on the bench board, two lifting stands can be installed respectively, and the convenient operation worker installs.The problem that this prior art exists has some: (1) is because walking carriage is the scalene rectangle, wheelspan and the wheelbase of the scroll wheel below causing are asymmetric, when cross motion switches to longitudinal movement, lower square guide rail is corresponding to be readjusted by wheelspan and wheelbase, and the stability when mobile is brought unreliable factor.(2) bench board below scroll wheel half-twist is by manually finishing, and when the bench board platform switches to longitudinal movement from cross motion, because several scroll wheels are all respectively by fluid motor-driven, if cause HM Hydraulic Motor rotation direction inconsistent behind the scroll wheel half-twist, walking about the very big problem of generation of bench board platform, greatly dangerous, and manual operation guarantees it is insecure.(3) four jiaos of four hydraulic fluid cylinder pressures of walking carriage are risen synchronously or are descended by a cover oil circuit control, on the one hand because from out oil circuit footpath of oil pipe (through) arrive the oil circuit length difference of each hydraulic actuating cylinder behind the by-pass valve control, cause the oil pressure loss different, must cause rising or the descending speed difference of four hydraulic actuating cylinders, the walking carriage carrying is greatly not without even on the other hand, the size load causes hydraulic actuating cylinder to rise or descending speed difference, this speed difference causes sometime, and section rises or decline displacement difference, when serious, bench board is knockdown, this will greatly cause installing safety problem, and rudder blade and screw propeller and hull have certain precision, knockdown that the difficulty of installation will be increased when installing.(4) the lifting stand is installed on the removable slide unit in the both sides of walking carriage, when rudder blade is installed, because it is complicated spiral-shaped that rudder blade is, toward down large little, the stand of prior art is straight type stand, when the operative employee carries out above rudder blade and hull is installed, the upper end must be in stand the scaffold of fitting operation again, and add springboard and carry out, namely time-consuming dangerous again.
Summary of the invention
The present invention is directed to the prior art above shortcomings, provide a kind of ship stern hydraulic pressure oar rudder that walking carriage is installed, satisfy the installation of shipping rudder blade and screw propeller, improve installation effectiveness, stop potential safety hazard, shorten unit ship dock operating cycles, improve shipbuilding efficient.
The present invention is achieved by the following technical solutions, the present invention includes: main platform, scroll wheel, pair of planar slide unit and corresponding installation stand thereof, wherein: two plane slide units are movably set in respectively the left and right sides of main platform, the scroll wheel of four fluid motor-driven is fixedly installed on respectively four drift angles in main platform below, stand is installed is fixedly installed on respectively on the corresponding flat slide unit.
The wheelspan of described scroll wheel is identical with wheelbase.
The upper surface of described main platform is square structure, is comprised of some H shaped steel and two upper and lower cover plates that are arranged at respectively top and bottom, and wherein: upper cover plate is as operating table surface, and lower cover is as supporting bable tops.
The described orthogonal captive joint of some H shaped steel also consists of net structure, and this net structure is provided with routing hole;
The thickness of described cover plate is 25～30mm.
Described main platform is provided with four by the proportional servo valve driving and has the main lifting hydraulic cylinder of linear displacement transducer and the master controller that is attached thereto, in order to control the lifting of platform, these four main lifting hydraulic cylinders move simultaneously realizes parallel rising or the decline of main platform and integrally.
Described linear displacement transducer is in order to the displacement of real-time each main lifting hydraulic cylinder of detection, when the hydraulic cylinder piston up-and-down movement, drive stay cord and do linear reciprocating motion, its displacement signal is exported by the sensor coded pulse, and send into master controller, PLC carries out Real-time Collection and carries out analytical calculation the displacement signal of each hydraulic actuating cylinder, calculate the corresponding regulated quantity of each hydraulic actuating cylinder according to Strategy For Synchronization Control, then control corresponding proportional servo valve, the hydraulic fluid flow rate that enters four hydraulic actuating cylinders is adjusted in real time, realized the high-precise synchronization lifting of four main lifting hydraulic cylinders.
Described Strategy For Synchronization Control refers to: take arbitrary main lifting hydraulic cylinder as main hydraulic cylinder, other main lifting hydraulic cylinder is from hydraulic actuating cylinder, take the moving displacement of main hydraulic cylinder as benchmark, do accompany movement with respect to main hydraulic cylinder, when main lifting platform, the displacement of displacement pickup Real-Time Monitoring jacking hydraulic actuating cylinder, each displacement pickup from hydraulic actuating cylinder is compared with the value of the displacement pickup of main hydraulic cylinder, its error amount is the control ratio servovalve after PID controller computing separately, correspondingly regulate the flow of each jacking hydraulic actuating cylinder, thereby realize the synchronization lifting of the hydraulic multi-cylinder of main platform.
Described installation stand is that rudder blade is installed stand or screw propeller is installed stand;
When described installation stand was screw propeller installation stand, the axis of symmetry that described main platform center is positioned at the pair of planar slide unit partly was provided with groove.
Be provided with some manual spiral jacking devices around the described main platform.
The top that described rudder blade is installed stand is provided with the Job Operations platform, and this Job Operations platform and rudder blade are installed stand and realized being flexibly connected by hydraulic actuating cylinder.
Described screw propeller is installed stand and is provided with the draw-wire displacement sensor that is connected with described main lifting hydraulic cylinder.
Described scroll wheel can be realized clickwise, left-hand revolution or whole 90 degree rotations, becomes different orientation by four scroll wheels and chassis like this, can make boom truck along vertically walking or laterally walking of track.And the mode by mechanical position limitation, guarantee that the hand of rotation of four scroll wheels can only rotate along the direction of some restrictions.And at rotation direction sensor of revolving wheel design, only when main platform when carrying out in length and breadth switching to motion, system oil-way just switches automatically when must scroll wheel being rotated in place, and can determine that by rotation direction sensor the motion of chassis is that longitudinal movement or cross motion disease are carried out corresponding oil circuit and switched.
Described plane slide unit is provided with telescopic hydraulic cylinder, realizes the movement of plane slide unit.
The present invention has following characteristics: according to the needs of different application occasion, platform can adopt " a type structure " or " concave structure ", and break through traditional " a type structure " and " concave structure ", reduced the distance of work top to the dock bottom, promoted the installation adaptive capacity of system, the oar rudder that has effectively solved the multiple special hull configurations such as LNG liquefied natural gas carrier is installed.
Draw-wire displacement sensor mixing ratio servovalve forms closed loop control, solved the not high problem of synchronization accuracy of open loop control, make the system can be under 250 tons of loads, the synchronization accuracy of system's lifting can be controlled at all the time ± 3mm in, reduce the impact of the factors such as seepage, load variations of oil circuit path, oil, guaranteed conformability and the stability of system's controller characteristic curve when long-time running.
This main platform adopts has " grid beam " structure of certain depth, in the situation that satisfies system bearing intensity, has alleviated the heavy burden of system self, has improved Systems balanth, has reduced the distortion under system reload.And the grid of middle and both sides can be used for system's stringing and wiring, makes system clean and tidy and attractive in appearance.
Screw propeller is installed the closed loop synchronization discrepancy control techniques of stand, promoted the precision that stand is risen synchronously, make system both can be used for the installation of horizontal stern arrangement and propeller, also can be used for the installation of the horizontal stern arrangement and propellers such as liquefied natural gas carrier, improved Security of the system and comformability.And rudder blade install the stand top can be elastic the slip job platform mounting center position that can solve easily rudder blade, greatly improved comfort feature and safety that rudder blade is installed.
Use the present invention to carry out the installation of ship propeller rudder blade, production cycle is shortened greatly, and former installation one cover screw propeller and rudder blade need the time in a week, and existing needs the time just can finish, greatly shortened the operating cycles of unit ship dock, the simultaneously safety of operation also increases greatly.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is main platform schematic perspective view.
Fig. 3 is main platform birds-eye view.
Fig. 4 is the groove structure scheme drawing.
Fig. 5 is used for the structural representation that rudder blade is installed among the embodiment.
Fig. 6 is used for the structural representation that screw propeller is installed among the embodiment.
The specific embodiment
The below elaborates to embodiments of the invention, and present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figures 1 to 4, present embodiment comprises: main platform 1, scroll wheel 2, pair of planar slide unit 3 and corresponding installation stand 4 thereof, wherein: two plane slide units 3 are movably set in respectively the left and right sides of main platform 1, the scroll wheel 2 of four HM Hydraulic Motor 5 drivings is fixedly installed on respectively four drift angles in main platform 1 below, stand 4 is installed is fixedly installed on respectively on the corresponding flat slide unit 3.
As shown in Figures 2 and 3, the upper surface of described main platform 1 is square structure, is comprised of some H shaped steel 6 and two upper and lower cover plates 7,8 that are arranged at respectively top and bottom, and wherein: upper cover plate 7 is as operating table surface, and lower cover 8 is as supporting bable tops.
Described some H shaped steel 6 orthogonal captive joints also consist of net structure, and this net structure is provided with routing hole;
The thickness of described cover plate 7 is 25～30mm.
Described main platform 1 is provided with four by the proportional servo valve driving and has the main lifting hydraulic cylinder 9 of linear displacement transducer 10 and the master controller (not shown) that is attached thereto, in order to control the lifting of platform, these four main lifting hydraulic cylinders 9 move simultaneously realizes main platform 1 whole parallel rising or decline.
Described linear displacement transducer 10 is in order to the displacement of each main lifting hydraulic cylinder 9 of real-time detection, when the hydraulic cylinder piston up-and-down movement, drive stay cord and do linear reciprocating motion, its displacement signal is exported by the sensor coded pulse, and send into master controller, PLC carries out Real-time Collection and carries out analytical calculation the displacement signal of each hydraulic actuating cylinder, calculate the corresponding regulated quantity of each hydraulic actuating cylinder according to Strategy For Synchronization Control, then control corresponding proportional servo valve, the hydraulic fluid flow rate that enters four hydraulic actuating cylinders is adjusted in real time, realized the high-precise synchronization lifting of four main lifting hydraulic cylinders 9.
Described Strategy For Synchronization Control refers to: take arbitrary main lifting hydraulic cylinder 9 as main hydraulic cylinder, other main lifting hydraulic cylinder 9 is from hydraulic actuating cylinder, take the moving displacement of main hydraulic cylinder as benchmark, do accompany movement with respect to main hydraulic cylinder, when main platform 1 lifting, the displacement of displacement pickup Real-Time Monitoring jacking hydraulic actuating cylinder, each displacement pickup from hydraulic actuating cylinder is compared with the value of the displacement pickup of main hydraulic cylinder, its error amount is the control ratio servovalve after PID controller computing separately, correspondingly regulate the flow of each jacking hydraulic actuating cylinder, thereby realize the synchronization lifting of the hydraulic multi-cylinder of main platform 1.
When carrying out the screw propeller installation, described installation stand 4 is that screw propeller is installed stand 13, and when carrying out the rudder blade installation, described installation stand is that rudder blade is installed stand 12.
When described installation stand 4 was installed stand 13 for screw propeller, the axis of symmetry that described main platform 1 center is positioned at pair of planar slide unit 3 partly was provided with groove 11.
The top that described rudder blade is installed stand 12 is provided with Job Operations platform 14, and this Job Operations platform 14 is installed stand 12 with rudder blade and realized being flexibly connected by hydraulic actuating cylinder.
Described screw propeller is installed stand 13 and is provided with the draw-wire displacement sensor 15 that is connected with described main lifting hydraulic cylinder.
The wheelspan of described scroll wheel 2 is identical with wheelbase.
This device carries out work in the following manner:
As shown in Figure 5, the installation process for rudder blade is specially: first along two guide rails 17 of hull axis direction parallel laid, require gauge to equal the wheelspan of chassis, chassis is positioned on the guide rail, and rudder blade to be installed is placed on the main platform 1.When laying guide rail, should consider the installation site of rudder blade, should make the center of its rudder pintle axle should be consistent with the center in rudder horn hole.Before placing rudder blade, adjust first on the main platform 1 between the left and right plane slide unit 3 open span from, then rudder blade to be installed is placed on the table top of main platform 1 by the mode of lifting, and be positioned at the centre that left and right sides rudder blade is installed stand 12, then with rudder blade four of stand 12 are installed the top hydraulic actuating cylinder is carried out clamping and location to rudder blade.After ready, chassis advances with speed faster first, advances with slower speed during near the installation site, halts when the dead in line in the axis of rudder pintle axle and rudder horn hole, then make rudder blade the job platform on stand 12 tops is installed near the installation site, center of rudder blade, prepare to install.During installation, elder generation of system is with four main lifting hydraulic cylinders 9 of method of synchronization lifting master platform 1, thereby make platform realize high-precision synchronization lifting, after reaching the installation site, main platform 1 continues to rise with slower speed again, make the mounting hole of the rudder pintle axle insertion rudder horn of rudder blade, until put installation in place.If the riding position of guide rail laying or rudder blade is deviation slightly, then when the rudder pintle axle inserts the rudder pintle hole, can adopt first the mode of the some or several main lifting hydraulic cylinders 9 of single action platform, adjust a little the insertion angle of rudder pintle axle, also available rudder blade is installed an insertion angle to jacking force hydraulic actuating cylinder fine setting rudder blade of stand 12, main platform 1 synchronization lifting more then, so repeatedly, until put in place, installation.
As shown in Figure 6, the installation process for screw propeller is specially: at first along two guide rails 17 of hull horizontal direction parallel laid, simultaneously two guide rails of parallel laid longitudinally below the blade installation site require gauge to equal the wheelspan of chassis.When cross slide way was laid, the space extending line of screw propeller should be avoided the rudder horn position of afterbody, in order to avoid in length and breadth when switching, screw propeller can't arrive the desired location.When longitudinal rail was laid, the axis extended line of blade mounting hole was used the axis of hull oar tailing axle on a line.Chassis is positioned on the guide rail, and the mode that screw propeller installation stand 13 is bolted is fixed on the left and right sides, the plane slide unit of main platform 1.Before placing blade, adjust first between the left and right plane slide unit 3 open span from, then if necessary, stand 13 is installed about can regulating separately first and makes and have certain angle of inclination between blade and the tailing axle, adjust stand to suitable setting height(from bottom) by the method for synchronization again, at last screw propeller to be installed is lifted on the Support bracket 16 of installing in the stand 13 also fixing.After ready, chassis halts with the advance backstage car that puts in place of slower speed first so that speed advances to the axial location of tailing axle faster again.With main platform 1 jacking certain altitude, then screw off the manual spiral jacking device 18 and ground supporting and locking on chassis four limits, make again the chassis certain altitude that rises overally, make scroll wheel 2 break away from below track and swing, after rotation direction sensor detection scroll wheel 2 nine ten degree rotate in place, the automatic switchover oil circuit.After scroll wheel 2 nine ten degree rotate in place, the back-up roller driving wheel 2 of chassis descends until contact fully with long rails, should unclamp manual spiral jacking device this moment, then chassis longitudinally advances to the screw propeller installation site, chassis rises in the mode of high-precise synchronization lifting, when the axis extended line of tailing axle passes screw propeller mounting hole center, chassis advances, allow tailing axle pass the mounting hole of screw propeller, if there is error the position of mounting hole, thus can be by the cover implantation site of one or several propeller blades mounting holes in four main lifting hydraulic cylinders 9 of single action chassis, and cooperate the prospect of chassis or retreat, so repeatedly, until put in place, finish installation.
When four main lifting hydraulic cylinder 9 one liftings, because it is different to reach the oil circuit path of hydraulic actuating cylinder, damping is different, and the non-uniform load of the seepage of hydraulic oil, screw propeller or rudder blade distributes, therefore merely by what open loop physically controlled to realize hydraulic actuating cylinder larger difficulty arranged synchronously, its precision and stability all is difficult to guarantee.And the closed loop synchro control of employing hydraulic multi-cylinder then can realize main platform 1 high-precision synchronization lifting, and not be subjected to the variation of external environment condition.As shown in the figure, on four main lifting hydraulic cylinder 9 tops of main platform 1, a dragline type coder linear displacement transducer 10 is installed respectively, calculate by analysis, and the process Strategy For Synchronization Control obtains the regulated quantity of each hydraulic actuating cylinder, automatically control each hydraulic cylinder speed through proportional servo valve again, thereby guarantee main platform 1 high-precision synchronization lifting, improved efficient and improved again the safety that operates.
When needs are finely tuned the attitude of rudder blade or screw propeller, in certain scope, can realize by the main lifting hydraulic cylinder 9 of single action one of them or several chassis the fine position of chassis vertical direction, and advancing or retreat by 4 scroll wheels 2 of chassis, can realize along the fine position of hull longitudinal direction, thereby by the attitude change screw propeller of change platform or the attitude of rudder blade installation site.
When rudder blade was installed, left and right sides rudder blade is installed stand 12 top job platforms 14 can be elastic, and the convenient operation personnel fully near the installation site of rudder blade, have improved installation effectiveness on the one hand, improved again on the other hand the safety of operation.
Equilateral foursquare main platform 1 structure can make things convenient for switching to motion in length and breadth of chassis, when laying guide rail, need not change its gauge.
The chassis platform is " type " structure, be applicable to install the higher ship type in rudder horn position, and " matrix " structure of main platform 1 attachment face uniqueness, owing to reduced the distance of erecting stage apart from the dock bottom, have larger range of use, go for the Fast Installation of the oar rudder of the special hull configurations such as LNG.
This device adopts at the Chinese shipbuilding Group Co.,Ltd in east, Shanghai 250 tons of ship sterns oar rudder erecting stage, use this device to realize the high-precise synchronization lifting of oar rudder erecting stage, its synchronization accuracy can be controlled in ± 3mm in, and substantially be not subjected to the impact of external environment, and unique " matrix " structure design, reduce platform and table top has been installed to the distance of dock bottom, improved the adaptive capacity that system installs the oar rudder of various not shipmate types.Use this device to carry out the installation of propeller for vessels and rudder blade, the production cycle is shortened greatly, former installation one cover screw propeller and rudder blade need the time in 1～2 week approximately, only need the time just can finish now, and the simultaneously safety of operation also increases greatly.
Claims (8)
1. a ship stern hydraulic pressure oar rudder is installed walking carriage, comprise: main platform, scroll wheel, pair of planar slide unit and corresponding installation stand thereof, wherein: two plane slide units are movably set in respectively the left and right sides of main platform, the scroll wheel of four fluid motor-driven is fixedly installed on respectively four drift angles in main platform below, stand is installed is fixedly installed on respectively on the corresponding flat slide unit, it is characterized in that:
The upper surface of described main platform is square structure, is comprised of some H shaped steel and two upper and lower cover plates that are arranged at respectively top and bottom, and wherein: upper cover plate is as operating table surface, and lower cover is as supporting bable tops;
Described square structure makes things convenient for switching to motion in length and breadth of chassis, and need not change its gauge when laying guide rail;
Described main platform is provided with four by the proportional servo valve driving and has the main lifting hydraulic cylinder of linear displacement transducer and the master controller that is attached thereto, in order to control the lifting of platform, these four main lifting hydraulic cylinders move simultaneously realizes parallel rising or the decline of main platform and integrally;
Described linear displacement transducer is in order to the displacement of real-time each main lifting hydraulic cylinder of detection, when the hydraulic cylinder piston up-and-down movement, drive stay cord and do linear reciprocating motion, its displacement signal is exported by the sensor coded pulse, and send into master controller, PLC carries out Real-time Collection and carries out analytical calculation the displacement signal of each hydraulic actuating cylinder, calculate the corresponding regulated quantity of each hydraulic actuating cylinder according to Strategy For Synchronization Control, then control corresponding proportional servo valve, the hydraulic fluid flow rate that enters four hydraulic actuating cylinders is adjusted in real time, realized the high-precise synchronization lifting of four main lifting hydraulic cylinders;
Described installation stand is that rudder blade is installed stand or screw propeller is installed stand; The axis of symmetry that described main platform center is positioned at the pair of planar slide unit partly corresponds to type structure or a groove structure, in the main platform-the type structure is applicable to install the higher ship type in rudder horn position; Groove structure has reduced the distance of erecting stage apart from the dock bottom, is applicable to the Fast Installation of the oar rudder of LNG;
Described Strategy For Synchronization Control refers to: take arbitrary main lifting hydraulic cylinder as main hydraulic cylinder, other main lifting hydraulic cylinder is from hydraulic actuating cylinder, take the moving displacement of main hydraulic cylinder as benchmark, do accompany movement with respect to main hydraulic cylinder, when main lifting platform, the displacement of displacement pickup Real-Time Monitoring jacking hydraulic actuating cylinder, each displacement pickup from hydraulic actuating cylinder is compared with the value of the displacement pickup of main hydraulic cylinder, its error amount is the control ratio servovalve after PID controller computing separately, correspondingly regulate the flow of each jacking hydraulic actuating cylinder, thereby realize the synchronization lifting of the hydraulic multi-cylinder of main platform;
When four main lifting hydraulic cylinder one liftings, because it is different to reach the oil circuit path of hydraulic actuating cylinder, damping is different, and the non-uniform load of the seepage of hydraulic oil, screw propeller or rudder blade distributes, therefore merely by what open loop physically controlled to realize hydraulic actuating cylinder larger difficulty arranged synchronously, its precision and stability all is difficult to guarantee; And the closed loop synchro control of employing hydraulic multi-cylinder, then can realize the high-precision synchronization lifting of main platform, and be not subjected to the variation of external environment condition, on four main lifting hydraulic cylinder tops of main platform, a dragline type coder linear displacement transducer is installed respectively, calculate by analysis, and pass through the regulated quantity that Strategy For Synchronization Control obtains each hydraulic actuating cylinder, automatically control each hydraulic cylinder speed through proportional servo valve again, thereby guarantee the high-precision synchronization lifting of main platform;
When needs are finely tuned the attitude of rudder blade or screw propeller, in certain scope, can realize by the main lifting hydraulic cylinder of single action one of them or several chassis the fine position of chassis vertical direction, and advancing or retreat by a chassis scroll wheel, can realize along the fine position of hull longitudinal direction, thereby by the attitude change screw propeller of change platform or the attitude of rudder blade installation site.
2. ship stern hydraulic pressure oar rudder according to claim 1 is installed walking carriage, it is characterized in that the wheelspan of described scroll wheel is identical with wheelbase.
3. ship stern hydraulic pressure oar rudder according to claim 1 is installed walking carriage, it is characterized in that the described orthogonal captive joint of some H shaped steel also consists of net structure, and this net structure is provided with routing hole.
4. ship stern hydraulic pressure oar rudder according to claim 1 is installed walking carriage, it is characterized in that, the top that described rudder blade is installed stand is provided with the Job Operations platform, and this Job Operations platform and rudder blade are installed stand and realized being flexibly connected by hydraulic actuating cylinder.
5. ship stern hydraulic pressure oar rudder according to claim 1 is installed walking carriage, it is characterized in that, described screw propeller is installed stand and is provided with the draw-wire displacement sensor that is connected with described main lifting hydraulic cylinder.
6. ship stern hydraulic pressure oar rudder according to claim 1 is installed walking carriage, it is characterized in that, is provided with some manual spiral jacking devices around the described main platform.
7. ship stern hydraulic pressure oar rudder according to claim 1 is installed walking carriage, it is characterized in that, described rudder blade is installed in the following manner: first along two guide rails of hull axis direction parallel laid, require gauge to equal the wheelspan of chassis, chassis is positioned on the guide rail, and rudder blade to be installed is placed on the main platform; When laying guide rail, should consider the installation site of rudder blade, should make the center of its rudder pintle axle should be consistent with the center in rudder horn hole; Before placing rudder blade, adjust first on the main platform between the left and right plane slide unit open span from, then rudder blade to be installed is placed on the table top of main platform by the mode of lifting, and be positioned at the centre that left and right sides rudder blade is installed stand, then with rudder blade four of stand are installed the top hydraulic actuating cylinder is carried out clamping and location to rudder blade; After ready, chassis advances with speed faster first, advances with slower speed during near the installation site, halts when the dead in line in the axis of rudder pintle axle and rudder horn hole, then make rudder blade the job platform on stand top is installed near the installation site, center of rudder blade, prepare to install; During installation, first four the main lifting hydraulic cylinders with method of synchronization lifting master platform of system, thus make platform realize high-precision synchronization lifting, after reaching the installation site, main platform continues to rise with slower speed again, makes the mounting hole of the rudder pintle axle insertion rudder horn of rudder blade, until put in place, installation; If the riding position of guide rail laying or rudder blade is deviation slightly, then when the rudder pintle axle inserts the rudder pintle hole, adopt first the mode of the some or several main lifting hydraulic cylinders of single action platform, adjust a little the insertion angle of rudder pintle axle, or with rudder blade an insertion angle to jacking force hydraulic actuating cylinder fine setting rudder blade of stand is installed, main platform synchronization lifting more then, so repeatedly, until put in place, installation;
When rudder blade was installed, it is elastic that left and right sides rudder blade is installed stand top job platform, and the convenient operation personnel are fully near the installation site of rudder blade.
8. ship stern hydraulic pressure oar rudder according to claim 1 is installed walking carriage, it is characterized in that, described screw propeller is installed in the following manner: at first along two guide rails of hull horizontal direction parallel laid, simultaneously two guide rails of parallel laid longitudinally below the blade installation site require gauge to equal the wheelspan of chassis; When cross slide way was laid, the space extending line of screw propeller should be avoided the rudder horn position of afterbody, in order to avoid in length and breadth when switching, screw propeller can't arrive the desired location; When longitudinal rail was laid, the axis extended line of blade mounting hole was used the axis of hull oar tailing axle on a line; Chassis is positioned on the guide rail, and the mode that screw propeller installation stand is bolted is fixed on the left and right sides, the plane slide unit of main platform; Before placing blade, adjust first between the left and right plane slide unit open span from, then if necessary, about regulating first separately stand is installed and makes and have an angle of inclination between blade and the tailing axle, adjust stand to setting height(from bottom) by the method for synchronization again, at last screw propeller to be installed is lifted on the Support bracket of installing in the stand also fixing; After ready, chassis halts with the advance backstage car that puts in place of slower speed first so that speed advances to the axial location of tailing axle faster again; With main platform jacking, then screw off manual spiral jacking device and ground supporting and the locking on chassis four limits, chassis is risen overally, make scroll wheel break away from below track and swing, after rotation direction sensor detection scroll wheel 90 degree rotate in place, the automatic switchover oil circuit; After scroll wheel 90 degree rotate in place, the back-up roller driving wheel of chassis descends until contact fully with long rails, should unclamp manual spiral jacking device this moment, then chassis longitudinally advances to the screw propeller installation site, chassis rises in the mode of high-precise synchronization lifting, when the axis extended line of tailing axle passes screw propeller mounting hole center, chassis advances, allow tailing axle pass the mounting hole of screw propeller, if there is error the position of mounting hole, thus the cover implantation site by one or several propeller blades mounting holes in four main lifting hydraulic cylinders of single action chassis, and cooperate the prospect of chassis or retreat, so repeatedly, until put in place, finish installation.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108263990A (en) * | 2017-01-04 | 2018-07-10 | 施特力公司 | For lifting the lifting device of the vehicles and jacking system and its method |
| CN110510060A (en) * | 2019-08-30 | 2019-11-29 | 上海振华重工启东海洋工程股份有限公司 | A kind of tooling for being applicable to rudder blade and propeller and installing and opening and inspecting |
| CN110886732A (en) * | 2019-12-10 | 2020-03-17 | 北京北特圣迪科技发展有限公司 | PLC-based multi-stage multi-cylinder hydraulic synchronous control method and system |
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| CN110886732A (en) * | 2019-12-10 | 2020-03-17 | 北京北特圣迪科技发展有限公司 | PLC-based multi-stage multi-cylinder hydraulic synchronous control method and system |
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