The spud is main part Cutter Suction Dredger, when operation, through steel spud
Cross-cut construction method
1, the cutter suction Dredger is equipped with spud in the general area of construction, steel spud should be symmetrical cross-cut method or a steel cross-car spud digging method of construction.
2, in the area of large waves, equipped with three cable dredger positioning spud should be positioned with three cable cross-cut construction method.
3, the flow velocity in large areas or large waves, equipped with an anchor on the cable cross digging equipment cutter suction dredger, anchor cable should be used cross-cut construction method
Segment dig method
1, Trench length greater than the length of the water pipeline dredge effective extension should be segmented according to the length of the dredgers and the construction of water pipelines can Excavation.
2. Trench turnaround curve is divided into several sections require excavation of straight line segments can be linear piecewise curve approximation safe construction.
3. Trench different specifications or different schedule requirements, should be in accordance with the requirements of the contract segment.
4, navigation or interference by other factors, the construction can be segmented as needed
Shun countercurrent construction
When river construction using steel spud positioned, should adopt the downstream construction; construction should be used when using countercurrent anchor cable cross-dig construction method; when the large flow rates, and can be used under construction downstream end of the anchor to ensure safety.
Photo of our Marine Spud:
The specifications of our spud
A. General
High accuracy, fully welded, painted construction can be used for cutter suction dredger.
When the cutter suction dredger is working, two spuds insert the sea alternatively, one is main pile, always aligned pocket centerline and the other is vice pile used forward exchange, to meet dredger back and forth and meet dredging work.
B. Construction and procedure
The construction is to be built according to the drawing with rules of good workmanship and to be built the longitudinal frame system.
The construction is of rolled Steel Pipe sections with varying wall thickness, from40mm to 150mm, which are carefully manufactured and checked to ensure roundness, straightness, segment connection deflection within the specific tolerances.
C. Procedure
Pre-roll bending pf plate-Rolling of cylindrical hull-Welding the vertical seam to close the section-Heat treatment-Rolling to correct ovality-Assemble of the several pipe sections-Assemble with accessories( Sheave , expansion part etc.)
D. Materials
All fabricated steelwork used in the construction of the spud will be to manufacturing standard of classification society BV, GL, LR, DNV
All steel used to be blasted and shop primed both sides. Using DH36 and D690
All materials proposed will be selected to comply with the latest Health and Safety Rules.
Paint systems for hull protection will be of the highest quality (Hempel, Inter, Sigma, Jotun)
E. Welding
All welding will be performed in accordance with drawing and order and UniSite experience and all welding will be continuous and full penetration.
Welding seam preparation, welding method, welding material and consequent preheating temperature acc. to UniSite standards and approved by clients.
UniSite will control preheating, cooling down rate
Weld surface on the outside spud surface are to be grinded flush.
All welding to be examined UT and some to be examined X-ray.
F. Workmanship
The workmanship have good marine practice. Care are taken to ensure fair lines, smooth surfaces and neat welding.
G. Main particulars
MAIN PARTICULARS
Tolerance
High accuracy(ISO2768, ISO5817, ISO13920)
Material
DH36, D690 with Z-quality or other materials
Dimension(L*B*H)
As per drawing, as large as we can
OD
900mm-2800mm
Weight
60Ton~400Ton
Coating
Sa2.5 blasted and two or three layers painted with highest quality
Marking
as per clients' requirements
Inspection
material, construction, dimension, welding seam, non defective test, paint inspection
Experience
We made OD2600*63m with total 360Ton spuds for world top dredging company.
Others
Recyclable, in line with environmental requirements and standards, and reliable
Marine Spud High Quality Dredge Spud,Customized Dredge Spud,Customized Weld Spud,Marine Dredge Spud Unisite Group Ltd. , https://www.shipsparts.nl
Co-rotating Double Screw Extruder / PET flakes Recycling Pelletizing Machine
Pet Pelletizing Machine is specially designed for PET bottles, flakes, PVC, Plastic sheets and other crushed materials, with good performance and high output, are easy to operate and maintain.
Applications: PET, PVC, WPC, PP, PE, HDPE, etc
Material shapes: Bottle flakes, sheets, etc
Pet Pelletizing Machine Production Process:
Use a Spiral charger to feed materials into the Extruder materials evenly squeezed, melted and plastified in the Extruder material strips coming out from the machine head, after filtering system (Hydraulic Screen Changer) being cooled by Water tank being dried by Gale dryer (strong dryer) being trasnferred and cut in the Pelletizer being collected by Silo the End.
After-sales service:
Send engineers to install, test the machines and offer technology guidance and worker training at customers' factory.
Offer 12 months free maintenance and life long service. After the warranty period, Spare Parts will be provided at basic cost.
Build customers database. All machines are traceable.
Visit customers and make quality trace periodically and take customers' feedback into account during routine practices.
Speed up service and spare parts supply.
Model
TSSK-20
TSSK-30
TSSK-35
TSSK-50
TSSK-65
TSSK-75
TSSK-95
Screw diameter
(mm)21.7
30
35.6
50.5
62.4
71.2
91
Rotary speed
(rpm)600
400
400/600
400/500
400/500
400/500
400/500
Main motor power
(KW)4
11
11/15
37/45
55/75
90/110
220/250
L/D
32-40
28-48
32-48
32-48
32-48
32-48
32-40
Output (kg/hr)
2-10
5-30
10-80
20-150
100-300
300-600
600-1000
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Model
TSSK-50B
TSSK-6550B
TSSK-75B
TSSK-75D
Screw diameter
(mm)50.5
62.4
71.2
71.2
Rotary speed
(rpm)600
600
600
500/600
Main motor power
(KW)55
90
132
200/250
L/D
32-64
32-64
32-64
32-64
Output (kg/hr)
120-280
180-400
250-650
500-1000
