30results about How to "Convenient for underwater work" patented technology

The invention provides an underwater pipeline automatic drilling machine. The underwater pipeline automatic drilling machine comprises a steel wire rope guiding mechanism, a feeding driving mechanism,a drilling driving mechanism, a clamping mechanism, a pipeline positioning mechanism and an upper and lower bracket, wherein the upper and the lower support form a machine body main body part througha pin shaft, the steel wire rope guide mechanism, the pipeline positioning mechanism, the feeding driving mechanism and the drilling driving mechanism are arranged on the body part of the machine body. The underwater pipeline automatic drilling machine are used for achieving drilling work of pipelines with different sizes at one time; the system can be automatically controlled and can be operatedby an ROV, the pipeline positioning mechanism, a steel wire rope tightening mechanism can select different driving modes under different working conditions, the application is flexible, and underwater operation is facilitated; and the underwater pipeline automatic drilling machine can adapt to the narrow working environment of the seabed pipeline and the ground space.

The present invention proposes a kind of epoxy colored non-slip floor coating, which is prepared by the following raw materials in parts by weight: 100-140 parts of bisphenol A-epichlorohydrin type epoxy resin, 80-120 parts of 128 epoxy resin, 70-90 parts of epoxy modified acrylic resin, 50-70 parts of colored ceramic particles, 20-40 parts of new mercaptan curing agent, 10-20 parts of reactive diluent, 5-15 parts of filler, 5-15 parts of defoamer 1-5 parts of leveling agent and 1-5 parts of graphene oxide modified benzophenone UV anti-ultraviolet agent. The epoxy colored non-slip floor paint prepared by the invention is bright in color, strong in wear resistance, non-volatile in solvent, healthy and environment-friendly, can be constructed underwater, and has an appropriate curing time. No cracking, no aging, long service life, good comprehensive performance, and wide application prospects.

The invention discloses a stepping linear driver driving a ratchet wheel to rotate through hydraulic pressure. The stepping linear driver is characterized in that a first driving cylinder and a second driving cylinder are arranged on a driver body; the first driving cylinder and the second driving cylinder are provided with reset springs for resetting; piston rods of the first driving cylinder and the second driving cylinder are arranged matched with pawls; the pawls rotate around rotating pins; compression springs are arranged on the pawls; the compression springs have spring acting force on the pawls, so that pawl teeth of the pawls are matched with the ratchet wheel, and the ratchet wheel is driven to anticlockwise or clockwise rotate; the ratchet wheel is arranged on a power shaft; a driving gear is arranged on the power shaft as well; the driving gear is meshed with a matched driven gear; and the driven gear is driven to rotate to output driving torque. According to the obtained driver, through the driving cylinders and the stepping rotation of the ratchet wheel, the rotation amount can be accurately controlled, the control accuracy is greatly improved, and the pressure of a fluid passing through a valve is guaranteed to be constant in a set range; and the ratchet wheel is driven to anticlockwise or clockwise rotate through the two driving cylinders on the left and right, the rotation is flexible and reliable, and the reliability of a throttle valve is greatly improved.