Shanghai Eminent Tysun Engineering Co.,Ltd |
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Quick Release Mooring Hook
GENERAL DESCRIPTION
Installed at dock, Quick release hooks are special equipments for
winding and tying of ships. They are the update products of mooring
dolphins. Compared with cleat, they reduce working intensity,
increase working efficiency and improve safety and reliability.
Quick release hook consists of integrated
electrical winch and release systems. They are suitable for large
tonnage ships mooring harbors that require fewer workers and quick
releasing and winding of the hawser under heavy storm or other
dangerous status.
Eminent is a professional manufactory for design, production,
installation and service of Quick Release Hook(QRH). We learned
about different design philosophies from various manufacturers ,
drawed on the pick of the basket and we have put
the client's valuable comments into the basket together with our
own experience. Eminent Quick Release Hook as an excellent product
came out to the world. Especially, our designers with a solid
experience continue to update in new material and new technical
process in evey year. We have own 38pc patents only for Quick
Release Hooks.
We can supply you various type QRH(single, double, triple or
quadruple hooks as required by the layout of the terminal, although
other configurations, e.g. back-to-back,)with local manual hook
release, electric, hydraulic and pneumatic remote release systems
for the hooks, with the activation devices completely integrated
into the hook assembly. And also can supply you the all type QRH
installed mooring load monitoring system. We named it "Eminent
Tysun Intelligent Hook".
We can produce custom-made quick release hooks base on your requirement.
Each hook is proof tested to 150% of its rated load, and the
release mechanism is tested at full load rating at our own test
facility and is witnessed by a surveyor from an independent
Classification Society( LR,DNV,BV,ABS
etc.). If remote release is incorporated the hooks can be released
from a remote location (generally the control room or jetty office)
as well as by activating a button on the control panel mounted on
the side of the hook. Local displays of the mooring load tensions
and audible and visual alarms can also be incorporated into the
hook.
2. STANDARDS
OCMIF: Mooring Equipment Guidelines
TMXW1-2004: QRH (Shanghai Enterprise Standard)
ASME, Section IX:Welding Qualifications
ASTM A283 (Grade C) :Standard Specification for Low and
Intermediate Tensile Strength Carbon Steel Plates ASTM A148
:Standard Specification for Steel Castings, High Strength for Non
Structural Purposes
ASTM A572 :Standard Specification for High Strength Low Alloy
Columbium-Vanadium Structural Steel
IEC: National Electrical Code, Intrinsically Safe Process Control
Equipment for Use in Class I Hazardous Locations International
Electrotechnical Commission
Chinese Standards and the specification from the clients.
3 Capstan Assembly
In order to save time and to ensure maximum safety,Each mooring
unit is equipped with an integrated electric capstan motor
assembly, the mooring ropes are lifted up to the mooring hooks by
using the integrated electrical capstan. The capstan which is
reversible is operated from a foot switch.
Capstans are integrally mounted to the hook units and are certified
for Ex area where applicable.
This capstan complies with following specifications:
Starting pull: 40KN = max line pull Running pull: 15KN-30KN =
normal line pull Line speed: 20 m/min-25m/min
Back-stop: 1.5 times normal line pull
The capstan gear box is a self locking device to prevent the
capstan head from turning in the opposite direction due to the
weight of the mooring line at power off.
The mounting model for motor is suggested: Horizontal.
4. STRUCTURE DESIGN
MATERIAL LIST:
PART STANDARD REMARK
Hook GB-ZG35CrMo Equal to JIS SCCrM3
Shaft GB-40Cr Equal to ASTM A29 5140
Connector GB-Q420A Equal to ASTM A572 Gr.65
Frame GB-Q420A Equal to ASTM A572 Gr.65
Mounting base GB-Q420A Equal to ASTM A572 Gr.65
Anchor bolts/nuts GB-Q345A Equal to ASTM A572 Gr.50
We also can choose the right material and cumstom-made QRH base on
the actual temperature on site(-20℃)
We will submit the certificates for all material from an
independent Classification Society( LR,DNV,BV,ABS etc.).If
necessary.
SPECIFICATION AND PERFORMANCE DATA
Each hook will be tested as follows: Test load =1.5 times the SWL
Release load = 1.0SWL Manual release force for release bar <
170N@SWL
The movement range of hooks:
Vertical: -15°(MLMS model), -5°,0 to 45°, 55°.
Horizontal:
Single hook unit: 90°/90°
Double hook unit: 90°/45° (left hook)
45°/-90° (right hook)
Triple hook unit: 90°/ 45° (left hook)
45°/ -45°(Middle hook)
-45°/-90° (right hook)
Quadruple hook unit: Same as Triple hook unit.
MOUNTING BASE METHODS
Concrete embedment
Bolted to steel deck
Welded onto steel deck
HOOK ARRANGEMENT
Different arrangements available
Hooks can be installed on both sides of post Hook post delivered
with or without capstans Free standing capstans
5. INTELLIGENT HOOK
Eminent Intelligent hook includes Remote Release System, Status
Sensors and Mooring Load Moritoring System. It is possible to
performe Quick Release hooks release, monitoring out of the dock in
emergency. Ensure the Security of Jettyand operators.
Remote Release System and Status Sensors
To operate the release system from the remote location a central
remote control
panel is included in the delivery. The panel includes:
Hook release indicator
Hook release push button
A master release push button
An emergency release push button
A power on/off indicator lamp
A power on/off switch
Digital display
Display of hook loads
Alarm indication
Hook status (locked/unlocked)
Failed release
The remote quick release panel RQRP is
connected via the LAN/Ethernet cabling to
the hook stations. Functionality of the hooks is controlled from
the network dedicated processor LAN Micro Sensor (LMS) built into
the RQRP. Control of the hook’s
open/close functions is separated from the central computer system
due to safety reasons. Furthermore a special coded message protocol
between the RQRP and the hook station LAN/Ethernet unit is made to
avoid accidental release of the hooks.
The design of the RQRP allows to have multiple RQRP’s connected
both for
hazardous and safe area.
Mooring Load Monitoring System.
(1) The Load Pin:
The load pin is manufactured as a direct replacement for the hook
swivel shafts.
The load pin shall have the same safe working load as the
corresponding mooring
hook.
The load pins are made of stainless steel
17-4PH, which is a special quality of stainless steel with an
extreme high strength.
(2)The Amplifier and Control Uint
A dedicated amplifier module LM4 that is integreted into the
control panel for capstan has been designed to protect the load
cells from
the cable network to aviod damage in case of
induction caused by lightening. The amplifier module is equipped
with a proceesor unit that will track of the loads. This means that
the load values are
memorized in this amplifier module keeping track of about 1year of
data. Should the central computer
for some reason fail, the history is always available in the
amplifier unit.Temperature ranging from -40℃ to 85℃
(3)Load Monitoring on Central Computor
The load information is in real-time sent to the central computor
for visualization.
This central computor acts as server for the data recorders located
in the hook remote release control
panel cabinet.
The central computor system will also host the
Vessel Docking Aid System Software. Display
screens will be available to the operator thought a standard MS
windows interface and will form an
intergreted package.
Intelligent QRH
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