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136results about How to "Easy and efficient removal" patented technology

Method for replacing upper anchor cable of mooring anchor legs

Disclosed is a method for replacing an upper anchor cable of mooring anchor legs. The method includes 1), arranging a plurality of limiting tugs on the stem of a floating production storage and offloading oil tanker; 2), mounting protractors on the mooring anchor legs; 3), descending a tensioner to the sea floor and then tightening an anchor chain; 4), cutting a loosened anchor chain ring; 5), demounting the tensioner; 6), regulating heading of the oil tanker to be perpendicular to the anchor legs; 7), uplifting the upper anchor cable; 8), demounting an old upper anchor cable section head; 9), pulling a new upper anchor cable section head to the bottom of a single point; 10), mounting the new upper anchor cable section head; 11), connecting the new upper anchor cable section head with one section of the anchor chain to form a complete anchor leg; 12), releasing an underwater hydraulic tensioner steel strand to a natural state and demounting the same; 13), remeasuring water entry angle of the anchor legs and water depth and position of an lower anchor cable section head of the anchor legs. By the application of the method, all construction work like recycling the old anchor cable and mounting the new anchor cable are realized under the condition of not releasing the floating production storage and offloading oil tanker; therefore, production efficiency and reliability are improved.
Owner:CHINA NAT OFFSHORE OIL CORP +3

Deep mucky riverbed pipe gallery river crossing dual-steel-plate pile cofferdam structure and construction method

The invention relates to a deep mucky riverbed pipe gallery river crossing dual-steel-plate pile cofferdam structure; upstream and downstream of a river are provided with dual-steel-plate piles; each dual-steel-plate pile is enclosed by two lines of Larsen steel plate piles, the inner parts of the Larsen steel plate piles are connected through channel steel circuit purlin split bolts and a tie bar; adjacent Larsen steel plate piles are connected through a lock opening; the riverbed sludge between two steel plate piles is compacted and grouted to form compaction grouting soil; the inside walls of the dual-steel-plate piles are provided with the channel steel circuit purlin split bolt; one layer of anti-seepage film is arranged at inside of each dual-steel-plate pile, and a layer of bagged soil closes to the anti-seepage film; ash mixing soil is filled between the dual-steel-plate piles layer by layer. The deep mucky riverbed pipe gallery river crossing dual-steel-plate pile cofferdam structure has the beneficial effects that on the basis of waterproof dual-steel-plate piles, the ash mixing soil core with good anti-seepage ability is arranged between dual-steel-plate piles; the anti-seepage film is further arranged; the substrate of the ash mixing soil core is compacted and grouted to further improve the substrate waterproof effect, thus the waterproof effect of the whole cofferdam is improved through multiple waterproof effects.
Owner:ZHEJIANG COMM CONSTR GRP CO LTD

Continuous press fitting equipment for tubular workpieces

ActiveCN111230458AFalling steadilyEfficient and smooth flip adjustmentMetal working apparatusElectric machineryMechanical equipment
The invention discloses continuous press fitting equipment for tubular workpieces, and belongs to the field of workpiece production and processing mechanical equipment. A workpiece conveying belt is arranged on the lower side of a workpiece conveying support, the two sides of the workpiece conveying belt are wound and connected with workpiece conveying rotating rollers on the two sides of the workpiece conveying support respectively, and a workpiece conveying motor is in transmission connection with the workpiece conveying rotating rollers through a workpiece conveying chain. A workpiece guidemechanism, a workpiece transfer mechanism and a workpiece turnover mechanism are sequentially arranged on the workpiece conveying support on the upper side of the workpiece conveying belt in the conveying direction of the workpiece conveying belt. A workpiece push mechanism and a workpiece press fitting mechanism are arranged on the workpiece conveying support on the two sides of the ends in theconveying direction of the workpiece conveying belt respectively. The continuous press fitting equipment is reasonable in structural design, can guide and transfer the tubular workpieces one by one conveniently and smoothly, can realize successive and continuous press fitting processing of multiple assemblies in the transfer process of the tubular workpieces, improves the automation degree of workpiece processing and meets the needs of production and use.
Owner:SUZHOU ZHIYUN CHUANGYU INFORMATION TECH CO LTD
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