摘要:
An object of the present invention is to provide a turbine external compartment, a frame for a turbine external compartment, and a method of constructing a frame for a turbine external compartment that can improve a flow of steam inside of the compartment and can enhance the rigidity of the compartment using a simple structure. A turbine external compartment according to the present invention is placed in a frame having a steel-plate reinforced concrete structure obtained by filling a space between a plurality of steel plates with concrete. The turbine external compartment includes a lower half part having a side plate part or an end plate part made of the steel plates that constitute the frame.
摘要:
A steam turbine has an outer casing that is divided into an upper casing and a lower casing (a lower block) on a horizontal plane through which a rotor passes. The upper casing is divided into a middle block having a through hole and an upper block having a top panel, that is, into a portion including at least a part of the through hole through which the rotor penetrates. With this configuration, machining of a bellows fitting unit provided in an end-plate cone portion can be performed in existing facilities such as a factory, in a state that the lower block and the middle block are assembled without assembling the upper block.
摘要:
In a steam turbine according to a first embodiment, an outer casing 11 is divided into an upper casing 31 and a lower casing (a lower block) 32 on a horizontal plane through which a rotor passes, and the upper casing 31 is divided into a middle block 33 having a through hole 20 and an upper block 34 having a top panel 31a, that is, into a portion including at least a part of the through hole 20 through which the rotor penetrates and other parts. With this configuration, machining of a bellows fitting unit provided in an end-plate cone portion 21A can be performed in existing facilities such as a factory, in a state that the lower block 32 and the middle block 33 are assembled without assembling the upper block 34.
摘要:
An object of the present invention is to provide a turbine external compartment, a frame for a turbine external compartment, and a method of constructing a frame for a turbine external compartment that can improve a flow of steam inside of the compartment and can enhance the rigidity of the compartment using a simple structure. A turbine external compartment according to the present invention is placed in a frame having a steel-plate reinforced concrete structure obtained by filling a space between a plurality of steel plates with concrete. The turbine external compartment includes a lower half part having a side plate part or an end plate part made of the steel plates that constitute the frame.
摘要:
The present invention relates to an industrial robot and aims to provide an industrial robot capable of ensuring a long distance from a rotation axis of an arm to a tool mounting portion and accurately positioning the tool mounting portion by a compact structure. In a swing arm 150, the rotation of a tool mounting rotation arm driving motor 311 is transmitted to a pivot shaft 313 via a tool mounting rotation arm driving transmission mechanism 300, the rotation of a tool mounting portion driving motor 411 is transmitted to an intermediate power transmission shaft 422 via a tool mounting portion driving first transmission mechanism 412a, and the rotation of the intermediate power transmission shaft 422 is transmitted to an output power transmission shaft 426 via a tool mounting portion driving second transmission mechanism 412b, thereby rotating a tool mounting portion 170 while being decelerated by a tool mounting portion driving reduction unit 413.
摘要:
A production method for complex bearings includes: preparing an outer member and a cylindrical sintered bearing member. The outer member includes a fitting hole having: an almost circular cross section; an inner peripheral surface; and a surface roughness of the inner peripheral surface which is 3.2 to 100 μm at a maximal height. The sintered bearing member includes: an outer diameter allowing clearance fit of the sintered bearing member into the fitting hole of the outer member. The production method further includes: inserting the sintered bearing member into the fitting hole of the outer member and inserting a columnar core rod into an inner peripheral surface of the sintered bearing member; and compressing the sintered bearing member in an axial direction. By the compressing, an expanding peripheral surface of the sintered bearing member is pressed onto the inner peripheral surface of the fitting hole of the outer member, and the outer member and the sintered bearing member are thereby integrated with each other, and the inner peripheral surface of the sintered bearing member is pressed onto the core rod, and a hole size of the fitting hole of the sintered bearing member is thereby adjusted.
摘要:
The present invention is characterized by arranging a flow path 200 for supplying driving gas to a tool mounting portion 170 from a robot base 110 to the tool mounting portion 170 through the interiors of a rotation frame 120, a tube 220, a shoulder 140, a swing arm 150 and a tool mounting rotation arm 160.
摘要:
To provide a spinal intervertebral disk replacement material for nucleus pulposus which is relatively superior in load resistance that causes smaller damage of the anulus fibrosus by insertion during operation, remains in the anulus fibrosus stably after operation, and also allows prevention of the damage of the vertebral body cartilage endplate and the anulus fibrosus surrounding the prosthetic portion by sliding, and a production method thereof.The present invention relates to a spinal intervertebral disk replacement material for nucleus pulposus, comprising a dry polyvinylalcohol gel having a percentage of saturated water content of 18 to 50 wt % that changes its shape at a shape deformation rate of 150 vol % or more by water absorption. The present invention also relates to a method of producing the spinal intervertebral disk replacement material for nucleus pulposus above, comprising a step of preparing a polyvinylalcohol gel having a percentage of saturated water content of 20 to 53 wt %, a step of converting the polyvinylalcohol gel into a polyvinylalcohol hydrogel in the hydrated state and forming it into a shape having a hollow region, a step of irradiating the polyvinylalcohol hydrogel with γ ray at an intensity of 20 to 100 kGy, and a step of drying the PVA hydrogel in such a manner that the resulting hydrogel is so deformed that the hollow region disappears.
摘要:
The present invention provides a bearing material that is excellent in durability and is capable of maintaining wear resistance over a long period of time. The bearing material of the present invention is a high wear-resistance bearing material 10 for being used under a humid environment comprising: a base body 12 made of a polymer material having a methylene group; and a polymer layer 30 covering a bearing surface 16 of the substrate 12, the polymer layer 30 comprising polymer chains which have a phosphorylcholine group and are grafted from the bearing surface 16, wherein a phosphoric index of the sliding surface 16 which is calculated by dividing a peak intensity of phosphate group in an infrared spectrum measured on the sliding surface by a peak intensity of the methylene group therein is not less than 0.28.