49results about How to "Avoid direct abrasion" patented technology

The invention relates to the technical field of polishing tools, in particular to a sponge wheel structure. The outer wall of the sponge wheel 1 is sleeved with at least one circle of abrasive belt paper 2 for polishing, and at least one kind of middle layer of a friction layer 3, a heat insulating layer 4 and a heat conducting and radiating layer 5 is arranged between the sponge wheel 1 and the abrasive belt paper 2, so that heat generated during polishing can be reduced, or heat can be quickly dissipated, and the service life is prolonged.

The invention discloses a tooth-shaped structure of a bolt fixing tool. The tooth-shaped structure comprises a drive part, a looping part is concavely arranged inside the drive part; the inner periphery of the looping part is a hollow structure and is approximately a polygonal structure, the intersectional angle between edges of the polygonal structure of the looping part are respectively provided with an escape groove, the escape groove is a recessed arc structure, an opening of the escape groove and an opening of the adjacent escape groove take on a straight edge, the straight edge is a lank line section; a top surface is respectively arranged at the center of the straight edges between two adjacent escape grooves, the top surface is in a planar straight line section structure, the top surface is arranged at the straight edge between the two adjacent escape grooves and is superposed on the straight edge; a first groove and a second groove are respectively recessed between the escapegroove and the top surface, the first groove is closer to the escape groove, the second groove is closer to the top surface, the first and the second grooves are arranged in line symmetry with another first and second grooves; based on the intermediate vertical line of the distance between the two side walls of the escape groove with the arc structure, the first and the second grooves are arranged in line symmetry with another first and second grooves by the central vertical line of the distance between the two side walls of the arc structure of the escape grooves. The tooth-shaped structure of a bolt fixation tool can not cause slipping and bruting of the bolt fixing part resulting from the stress concentration of point contact.

The invention discloses an imitated-marble tile comprising the following components in percentage by weight: 95-96.7% of blank, 1.5-2% of ground coat enamel, 0.15-0.9% of fancy glaze and 1.6-2.1% of transparent overglaze. The imitated-marble tile provided by the invention has the fine grain similar to that of natural marble and has the hierarchy and the transparent feeling of natural stone; flower color is in glaze to avoid that the flower color of the tile is directly abraded, thus prolonging the service life of the tile, and keeping the integrity and the naturalness of the follower color for a long term.

The present invention discloses a strain clamp not needing to be wound by an aluminum armor tape. The strain clamp comprises a clamp body, and the clamp body is equipped with an arc-shaped groove usedfor placing a conducting wire. The strain clamp is characterized in that a briquetting is arranged in the arc-shaped groove, a lower aluminum armor tape is arranged in the arc-shaped groove, and thebriquetting is equipped with an upper aluminum armor tape and is fixed in the arc-shaped groove via a plurality of U-shaped bolts to clamp the conducting wire; the horizontally arranged left connecting columns are arranged at one side of the clamp body integrally, and the horizontally arranged right connecting columns are arranged at the other side of the clamp body integrally; the left connectingplates are installed on the left connecting columns detachably, the right connecting plates are installed on the right connecting columns detachably, and the upper end parts of the left connecting plates and the right connecting plates are fixedly connected via the bolts, thereby saving the original complex and tedious aluminum armor tape winding, substantially improving the working efficiency, avoiding the situation that the conducting wire and the clamp body are contacted directly to be worn directly, and prolonging the service life of the conducting wire.

The invention discloses a method for manufacturing an antifouling and antibiosis type yellow croaker net cage, which relates to a method for manufacturing a mariculture net cage. According to the invention, the method for manufacturing the antifouling and antibiosis type yellow croaker net cage adopts a buoyancy force system and a netting system, and is characterized in that the buoyancy force system adopts a combination buoyancy force form of 'an anti-aging high-density polyethylene double-floating-pipe cylindrical frame structure + 18 cube cystosepiments with each edge length of 60cm; the netting system adopts a combination structure netting form of 'a first box longitudinal netting + a second box longitudinal netting + a net cage bottom netting; the net cage bottom netting is assembledon a circular high-density polyethylene pipe support which is wrapped with a layer of polyamide multifilament wrap knitting net; and three cross lacing lines are installed at the bottom of the net cage, a polypropylene rope is tied at the cross point of the cross lacing lines, and two foam float bowls which are externally wrapped by double-layer seawater corrosion protection canva and nylon nets are tied at the other end of the polypropylene rope.

The invention discloses a permanent magnet clutch and an assembly method thereof. The permanent magnet clutch includes a driving disc and a driven disc. The driving disk includes a driving inner shaft, a magnet fixed disk, a plurality of magnetic rings 1, a driving outer shaft, a plurality of back iron blocks and a plurality of magnetic rings 2. The driven disc includes a driven shaft, an outer sleeve and an inner sleeve. The magnet fixed disk is coaxial with the active inner shaft, the magnetic coil one is installed on the magnet fixed disk, and the magnetic poles of the two adjacent magnetic coil ones are oppositely arranged. The active outer shaft is sleeved outside the active inner shaft, and the back iron block is embedded in the outer wall of the active outer shaft. The second magnetic coil is fixed on the active outer shaft, and the magnetic poles of the two adjacent magnetic coils are oppositely arranged. The magnetic ring two is covered on the corresponding back iron block, and is separated from the inner sleeve. The overcoat is sheathed outside the driving outer shaft, and the overcoat is fixed with the driven shaft to accommodate the driving disc. The inner sleeve is fixed on the inner wall of the outer coat. The master and slave parts of the clutch of the present invention have no direct contact, thereby avoiding mechanical wear of the clutch, reducing lubrication requirements, and having the advantages of vibration isolation and noise reduction.

The invention discloses a turbot cultivation net cage having an anti-pollution function, and relates to a turbot cultivation net cage. The turbot cultivation net cage uses a hot-dip galvanized iron pipe, a cylindrical plastic foam floating ball, a high-strength single fast knot polyethylene net, a high-strength nylon warp knitting net, an anti-pollution copper alloy rhombus net, a high-strength fishing polyethylene rope, an ultrahigh-strength rope and high-strength fishing lines and is characterized in that: a net cage floating support is welded into a top frame and a bottom frame by using the hot-dip galvanized iron pipe; the cylinder plastic foam floating ball under the lower surface of the bottom frame of the floating support is coated with waterproof cloth and a small-mesh waste netting; a netting system for the net cage consists of a double-layer synthetic fiber netting serving as a first netting and the anti-pollution copper alloy rhombus net serving as a second netting; the first netting and the second netting are connected in a vertical half-soft mode; the net bottom of the net cage is hung with a square galvanized iron pipe framework with edges of 5.0 meters; and the net cage floating support is connected with a floating rope frame through a cable and tied on a berth fixing system.

The invention provides a combined box body system used for a floating net cage and a mated frame system thereof, relating to a seawater cultivation floating net cage. A copper alloy inclined square mesh, a copper alloy weaving mesh, high-strength polyamide warp knitting fishnet, ropes, a galvanized iron pipe and foam buoys. The combined box body system is characterized in that a floating net cageframe system comprises two rows of square galvanized iron pipe frames; the foam buoys are distributed below the two rows of galvanized iron pipe frames; the fishnet system of a net cage body combinesa first high-strength polyamide warp knitting fishnet, a second copper alloy inclined square mesh and the copper alloy weaving mesh used for the bottom of the net cage'; the edge installing wire ropeof the fishnet at the bottom of the net cage is assembled on a square high-strength polyamide pipe frame; the high-strength polyamide pipe frame and a horizontal wire rope at the lower edge of the second copper alloy inclined square mesh are connected by an ultrahigh-strength rope; and a vertical force net is installed in the vertical direction of the fishnet and extends to the edge wire rope of the copper alloy weaving mesh used for the bottom of the net cage.