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Lawson TXLS ROV, Руководство по эксплуатации и техническому обслуживанию

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LAWSON ENGINEERS LTD                                                         Ref : PJ1682 
                                                                                                          Issue Date : 06.06.2006 

Locked / Damped 

Selector switch. Normal position is in Damped. Only 
select Locked if hoisting with the winch with the ‘A’ 
frame inboard. When the ‘A’ frame is outboard or in 
motion, select Damped. 

Snubber In/Out Motion. 

Toggle switches to drive snubber in or out using the 
damping cylinders. These controls operate whether 
the snubber is locked or in damped mode. 

 
Rotate Motion 

Toggle switches to control clockwise or counter 
clockwise motion. 
Note – When rotating the snubber with the TMS       
latched ensure the umbilical is slack to reduce the risk 
of birdcaging the armour. 

Snubber Up / Left 

Selector switch to move snubber either up and down 
or left and right. 

Snubber Up/Down                          Toggle switches to control the 600mm up/down 

feature.

 

There is a pressure relief on the Down motion, 
however it is not good practice to over lower the 
snubber as this will crush the TMS against the ROV. 
 

Snubber Left/Right 

Toggle switches to control the 20 degrees sideways 
motion. This feature is designed to allow the snubber 
to be aligned with the umbilical in strong current 
areas. Do not use this function if the vehicle is latched 
in or in air. Fully raise the snubber to ensure it is in 
the centre position before luffing the A-Frame. 

CAUTION –

 The 20 degrees sideways motion is only 

limited by proximity switches. If these fail the 
structure will be damaged as the cylinders over 
extend. Check the function of the proximity switches 
regularly and keep a good visual check if operating 
close to the limit of the swing. 

 
SNUBBER DAMPING 
 
The damping rate is controlled by flow control valve (95), located adjacent to the 5 stack 
valve under the skid deck.  By rotating the adjuster clockwise the damping rate is 
increased and by rotating the adjuster anti-clockwise the rate is reduced.  

 

SNUBBER LATCHING 
 
To latch the vehicle in, hoist the R.O.V. into the snubber, the termination cone will push 
past the latches and they will snap back into position under the cone.  If you now attempt 
to lower the R.O.V. the umbilical will go slack.  If required the latches can be powered 
back into position by pushing the latch release Toggle switch. 

- 24 - 

 

Содержание TXLS ROV

Страница 1: ...WSON ENGINEERS LTD Mechanical Structural Engineers Carlisle England 44 0 1228 711470 E Mail service lawson engineers com OPERATION MAINTENANCE MANUAL TXLS ROV LAUNCH RECOVERY SYSTEM EQUIPMENT REFERENC...

Страница 2: ...OWER PACK START UP 22 6 2 WINCH 22 6 3 A FRAME 23 6 4 SNUBBER 23 6 5 HPU CONTROLS and SYSTEM MONITORING 25 6 6 SAFETY CIRCUIT 26 7 TROUBLE SHOOTING 27 7 1 THE HYDRAULIC SYSTEM 27 7 2 THE ELECTRICAL CI...

Страница 3: ...n drives the coiler box Movement of the coiler box is initiated by the amount of offlead angle of the umbilical cable from the coiler box itself The horizontal travel sensing frame is mounted on the b...

Страница 4: ...isolation valve Tank filler point 1 2 male quick release coupling mating female half supplied loose with system Tank filler filter 10 abs Twin 75 kW Star Delta starter Reservoir equipment Suction str...

Страница 5: ...uence Valve Item 31 This valve will only allow the latches to open when sufficient pressure has built up in the latch open line When the pressure decays the valve returns the oil in the latch cylinder...

Страница 6: ...e pressure to the latch cylinders Main Pressure line check valves Item 14 If only one pump set is running these valves stop oil being pushed in reverse direction through the stationary pump Auxiliary...

Страница 7: ...d by hydraulically powered extension pieces that vary the length of the A frame legs The cross beam has pinned connections for the snubber assembly Lift eyes are provided for the lifting of the legs a...

Страница 8: ...ly The removable flare pieces must be unbolted from the sheave and the plastic umbilical guides must be removed from the docking box The docking box is sized to pass the umbilical termination without...

Страница 9: ...750mm min leg extension 2200mm Width between A frame legs 2300mm Weight 16000kg 2 3 SNUBBER Raise lower 600mm Lateral tilt 20 CAUTION The 20 degrees sideways motion is only limited by proximity switch...

Страница 10: ...r 45 5 cable Motor pressure at SWL 210 bar 2 5 POWER PACK Drive Motor Power 2 x 75kW 50 Hz 85 kW 60 Hz Speed 60 Hz 1780 r p m FLC Current at max load 132A 440V 122A 480V Voltage range 60Hz 380 480v In...

Страница 11: ...or Motor Max pressure continuous 140 bar Capacity 249 3 cc rev Max Speed 240 r p m 2 9 SNUBBER ROTATE MOTOR Rotate Gerotor Motor Max Pressure 140 bar Capacity 249 3 cc rev Max Speed 240 r p m 2 10 RES...

Страница 12: ...left relief valve 160 bar 104 Snubber in out relief valve 160 bar 104 Snubber raise lower relief valve 160 bar 105 Latches pressure reducer 100 bar 105 Rotate pressure reducer 80 bar 93 Coiler pressur...

Страница 13: ...LAWSON ENGINEERS LTD Ref PJ1682 Issue Date 06 06 2006 Working Pressure 250 bar 2 14 SNUBBER AIR SPRINGS Pressure at design height 30 34 p s i i e when vehicle latched 13...

Страница 14: ...r be loaded beyond the load on the top beam main padeyes Skid Lifting Padeyes 4 off Padeyes SWL 16Te over all 4 padeyes Test Load 16 0 Te x 2 5 Sin 60 4 11 6 Te per eye Vehicle Tie Down Padeyes 8 off...

Страница 15: ...5 seconds 9 Switch valve 98 drawing SW1673X 0002 located at the rear of the Skid see fig 1 to supply oil to L H cylinder only 10 Remove bolts from sliding cylinder mount of the R H cylinder See fig 2...

Страница 16: ...wing sequence All detented toggle switches in down position Switch on Remote Box Press the Reset button on the HPU panel twice 31 Ensure rotating frame on snubber is in mid position 32 Wind out suffic...

Страница 17: ...he tall weld down brackets before sliding cylinders back to their transport position Fig 1 Ball valve to switch cylinders during mobilization Fig 2 Picture showing tall weld down brackets to be remove...

Страница 18: ...LAWSON ENGINEERS LTD Ref PJ1682 Issue Date 06 06 2006 Fig 3 A frame erection valve Fig 4 Stowed power cable 18...

Страница 19: ...LAWSON ENGINEERS LTD Ref PJ1682 Issue Date 06 06 2006 Fig 5 Bullet passing thro frame Fig 6 Removable sheave pieces in position 19...

Страница 20: ...s in position h Ensure the equipment is maintained regularly in accordance with the maintenance instructions i Only one person should use the controls at any one time j When operating A frame ensure u...

Страница 21: ...the full SWL ROV TMS Work Package We recommend however that the trolley is not loaded thus Offshore The trolley is capable of supporting the TMS offshore u The 20 degrees sideways motion is only limit...

Страница 22: ...are no control activities If this happens the above procedure must be repeated 6 3 WINCH Controlled by proportional joystick on Remote Box Pull to Hoist Push to Lower The winch brakes lift automatical...

Страница 23: ...is set at 5Te umbilical tension The alarm and trip is set at 6Te However due to inertia and time delay as the trip operates the tension in the umbilical can rise to 10 12Te before the A Frame ceases m...

Страница 24: ...degrees sideways motion This feature is designed to allow the snubber to be aligned with the umbilical in strong current areas Do not use this function if the vehicle is latched in or in air Fully rai...

Страница 25: ...rame inboard Only use this function with the snubber in damped mode Ensure umbilical is slack when lowering 6 6 TROLLEY EXTEND The skid base can be extended out to a distance of 2 6 m by operating the...

Страница 26: ...pressure switch in the load sense line trips at 40 bar this switches on the alarm Emergency Stops Located on the Remote Box on the Winch and on the HPU An E stop being pushed causes a light to shine...

Страница 27: ...nemy of the hydraulic system and its presence could necessitate the complete renewal of one or more hydraulic units or just as easily cause small irritating faults 3 Hydraulic Hoses Only makers recomm...

Страница 28: ...ed air and if possible washed in clean spirit b POSSIBLE CAUSES OF HYDRAULIC FAILURE 1 Oil viscosity too high ensure that correct grade of oil is used for ambient temperatures encountered 2 Foreign bo...

Страница 29: ...erating in a hesitant or erratic manner with poor control and sensitivity and it may often be detected through a change in the working note of the pump Possible Causes i The hydraulic reservoir level...

Страница 30: ...Panel The control panels are Marine grade Stainless Steel All inter connections between the control panels to form the complete control system via marine grade cables and water proof plugs and sockets...

Страница 31: ...any other interlocks which would normally prevent the system from operating 7 2 3 Operation The main operation of the R O V Launch and Recovery system is described in detail in Section 6 The followin...

Страница 32: ...Motor No 2 Stop Button Hydraulic P P Motor Overload Lamp Hydraulic P P Motor Overload Lamp Hydraulic P P Motor Overload input Hydraulic P P Motor Overload input Winch Remote I O Control Panel 150W 24...

Страница 33: ...iver Card 5 Leg Extend A Frame Luff Input Leg Extend Input A Frame Luff A Solenoid From Driver Card A Frame Luff B Solenoid From Driver Card Leg Extend A Solenoid From Driver Card Leg Extend B Solenoi...

Страница 34: ...Latch Closed Input From Cavotec A Frame Disabled Output Solenoid Winch Load Cell Display Panel Load Cell Display 4 20mA Hard Wired to Winch Remote I O Panel Hydraulic P P Motor No 1 Start Button Hard...

Страница 35: ...mm2 minimum Safety earths are connected to a dedicated earth bolt of M8 minimum size provided with an earth symbol marker 7 2 5 Main Electrical Earth Each field cabinet has a copper earth bar for cir...

Страница 36: ...in the appropriate drawings 1 Wiring to PLC inputs are identified by a unique wire number Each PLC input has its own wire number 2 Wiring to PLC Outputs are identified by a unique wire number Each PL...

Страница 37: ...present in one terminal All internal wiring will be enclosed in plastic trunking sized according to the numbers of cables present In general SAK2 5 terminals will be used in the control panels unless...

Страница 38: ...0 7 24 V dc 24 V 3 SW1673X 0008 10 7 Hydraulic Pump M2 Running E2D I 0 12 I 12 BI 0 12 AB 2 SW1673X 0008 11 2 SW1673X 0007 01 02 24 V dc 24 V 3 AB 2 SW1673X 0008 11 2 SW1673X 0007 01 02 Hydraulic Pump...

Страница 39: ...0 7 Hydraulic Pump M1 Overload Lamp Q 0 7 Q 7 Q 0 7 Red Light SW1673X 0008 10 7 Relay O V1 SW1673X 0008 10 7 Hydraulic Pump M2 Overload Lamp Q 0 8 Q 8 Q 0 8 Red Light SW1673X 0008 10 8 Relay O V1 SW16...

Страница 40: ...X 0007 01 6 50736I1C 03 5 24 V dc CO 24V1 SW1673X 0008 15 6 Winch In Command MW 107 X10 I 10 CI 0 10 CG2 5 White X 1 16 SW1673X 0008 15 7 SW1673X 0007 01 6 50736I1C 03 6 24 V dc CO 24V1 SW1673X 0008 1...

Страница 41: ...CG1 Brown X 1 1 SW1673X 0008 16 5 SW1673X 0007 01 6 50736I1C 05 2 Snubber Left Command MW 108 X10 I 10 CI 1 10 CG3 2 White X 1 27 SW1673X 0008 16 6 SW1673X 0007 01 6 50736I1C 05 2 24 V dc CO 24V1 CG1...

Страница 42: ...Relay O V 1 CG1 Black X 1 2 SW1673X 0008 18 0 SW1673X 0007 01 6 50736I1C 02 4 Umbilcal Overload MW 11 X1 Q 1 CQ 1 1 CG3 5 White X 1 36 SW1673X 0008 18 1 SW1673X 0007 01 6 50736I1C 02 5 Relay O V 1 CG1...

Страница 43: ...11 X14 Q 14 CQ 1 14 SW1673X 0008 18 8 Relay Spare MW 11 X15 Q 15 CQ 1 15 SW1673X 0008 18 9 Relay Winch Demand MW 110 I 0 C 0 V CG2 5 Red X 1 13 SW1673X 0008 19 1 SW1673X 0007 01 6 50736I1C 03 3 10V dc...

Страница 44: ...W1673X 0008 20 4 SW1673X 0007 01 6 Winch 3 Proportional Driver Module MW 14 Out 1 CQ 3 0 7 SW1673X 0008 20 6 10V dc Out 1 0V CQ 3 0 8 SW1673X 0008 20 6 CO 24 V1 1 SW1673X 0008 20 6 C1 24 V1 2 SW1673X...

Страница 45: ...0007 01 6 Load Cell Valve MW 18 Out 1 CQ 5 0 SW1673X 0008 21 7 4 20 mA Out 1 0V CQ 5 0 SW1673X 0008 21 7 Latch A Opened Px SW MW157 X0 I 0 DI 0 0 D1 Black SW1673X 0008 25 2 SW1673X 0007 01 12 24 V dc...

Страница 46: ...X 0008 25 5 SW1673X 0007 01 13 O V 1 D8 Blue SW1673X 0008 25 5 SW1673X 0007 01 13 Spare MW157 X8 I 8 DI 0 8 SW1673X 0008 25 6 24 V dc Spare MW157 X9 I 9 DI 0 9 SW1673X 0008 25 6 24 V dc Spare MW157 X1...

Страница 47: ...7 SW1673X 0008 26 7 Relay Load Cell MW 158 I 0 DI 2 0 DL 3 Green SW1673X 0008 27 1 SW1673X 0007 01 14 0 20 mA 24 V 2 DL 1 Red SW1673X 0008 27 1 SW1673X 0007 01 14 O V 2 DL 2 Blue SW1673X 0008 27 1 SW1...

Страница 48: ...e possible to clean the pipe but in the case of long pipes and particularly if the pipe is kinked it is probably better easier to replace the pipe If the problem lies in the bearing slider then furthe...

Страница 49: ...r Clean yearly or as required PJ1682X 0002 9 Aux Suction strainer Clean yearly or as required Hydraulic Oil Renew every 1000 Hours or yearly Shell Tellus 32 ISO No 32 PJ1682X 0002 29 Power Pack Return...

Страница 50: ...ly 1 PJ1682A 0002 13 45 Coiler drive shaft nut Grease Gun and Brush Weather conditions will determine frequency Inspect prior to each use 4 PJ1682A 0001 32 Winch Slip Ring Bearing Grease gun Weekly 4...

Страница 51: ...he teeth during heavy duty use Inspection of the teeth after every dive is recommended in the early stages of use in order to determine how well the lubricating film is lasting If frequent reapplicati...

Страница 52: ...winch either on or behind the skid Ensure all hydraulic hoses to motor and electrical cable are disconnected and their ends plugged The coiler drive shaft runs in taper roller bearings When replacing...

Страница 53: ...osition and separated from the winch 1 Disconnect quick disconnect couplings and hose clamps on A frame top beam 2 Disconnect A Frame leg hoses from clamps to Skid 3 Disconnect the luffing cylinder ho...

Страница 54: ...tes unbolt sheave loadcell keyplates 8 and remove loadcell 25 6 Remove sheave 23 7 Unbolt motor gearbox 27 and remove with motor spacer 35 and pinion 32 8 Support the Damping Frame weldment 43 remove...

Страница 55: ...LAWSON ENGINEERS LTD Ref PJ1682 Issue Date 06 06 2006 16 Remove the screws attaching the air springs 1 to the rotating frame 42 and lift clear 9 6 SNUBBER ASSEMBLY PROCEDURE Reverse of above 55...

Страница 56: ...ly run power pack every 2 weeks for hour and check all filters etc Then connect the winch to the power pack and drive the winch backwards and forwards for hour and check oil flow rates filter pressure...

Страница 57: ...wo left hand columns of the parts list and comprises the parts list number followed by the bubble reference number called up on that drawing For example the part number for the winch drive gearbox is...

Страница 58: ...X 0002 Parts List PJ1682X 0002PL Hydraulic Piping Diagram SW1673X 0005 UMBILICAL WINCH Winch Mechanical Assembly SW1618A 0001 Parts List PJ1682A 0001PL Coiler Assembly SW1542A 0002 Parts List PJ1682A...

Страница 59: ...LAWSON ENGINEERS LTD Ref PJ1682 Issue Date 06 06 2006 59 13 MANUFACTURER S INFORMATION The information on bought out items is stored electronically on an attached CD...

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