156results about How to "Increase durability" patented technology

The invention relates to a connection structure of a building composite floor slab and a steel bar truss shear wall, and belongs to the field of building members. a one-way or two-way prestressed steel bar and a light steel rid are embedded in a prefabricated slab at the lower part of the connection structure; an oblong hole is formed in the end part of the light steel rib; an upper layer steel bar of the composite floor slab is paved in a notch in the upper part of the light steel rib; poured-in-place concrete is positioned at the upper part of the prefabricated slab to cover the light steel rib and the upper steel bar; a steel frame is arranged at the periphery of the shear wall, and is welded with a steel bar truss together; a pre-buried steel plate is arranged on the wall surface of the shear wall; a steel plate bracket, a reinforcing steel bar and a connecting plate all connected with the composite are welded onto the pre-buried steel plate; a concave pit is formed in the upper end of the shear wall; a short pattern steel fastener is welded on the steel frame at the lower end of the shear wall; the shear wall is connected with the composite floor slab; the composite floor slab is directly placed on the steel plate bracket of the shear wall, and is fixed in a manner that a bolt penetrates through the oblong hole in the end part of the light steel rib and the oblong hole in the connecting plate welded on the pre-buried steel plate of the wall surface of the shear wall; meanwhile, the reinforcing steel bar welded on the pre-buried steel plate of the wall surface of the shear wall is connected with the composite floor slab.

A grease for high-speed bearing and rolling bearing for high speed that enable satisfactorily coping with a high-speed rotation of 170x10<4> or higher dmN value and enable realizing compaction of machine tool and cutback of operating costs. The grease is one comprising a mixture of urea grease containing a urea compound as a thickener and nonurea grease not containing the urea compound, wherein the urea compound is one obtained by reaction between a polyisocyanate component and a monoamine component, the monoamine component containing 50 mol% or more of at least one monoamine selected from among aliphatic monoamines and alicyclic monoamines based on all the monoamines. Rolling bearing for high speed (1) is one comprising inner ring (2), outer ring (3), multiple rolling elements (4) interposed between the inner ring (2) and the outer ring (3) and seal member (6), wherein the above grease (8) is hermetically introduced around the rolling elements(4).

The present invention provides an image forming apparatus, comprising: a recording device that prints on a recording medium; a conveying unit that is arranged opposite to the recording device and arranged below the recording device to convey the recording medium; and a lifting device, Lifting the conveying unit; wherein, the lifting device includes an eccentric cam whose rotation axis is eccentric, the conveying unit has an abutting surface abutting on the peripheral surface of the eccentric cam, and is rotated by the eccentric cam And be lifted. Therefore, in the image apparatus, the conveying unit can be raised and lowered smoothly without generating an overload.