Sumitomo Heavy Industries

A cryopump (10) includes a radiation shield (30) that is thermally coupled to a first cooling stage (22) of a cryocooler (14) and that extends in an axial direction from a cryopump intake port (12) into a cryopump container (16), and a plurality of cryopanels (41, 42, 43) that are thermally coupled to a second cooling stage (24) of the cryocooler (14) and that are arranged in the axial direction inside the radiation shield (30). The plurality of cryopanels (41, 42, 43) include a top cryopanel (41) closest to the cryopump intake port (12) in the axial direction, and at least one cryopanel (42, 43) disposed with a space from the top cryopanel (41) in the axial direction. The top cryopanel (41) includes an opening (46) through which a gas passes into a space between the top cryopanel (41) and the at least one cryopanel (42, 43). An object of the present invention is to improve a sorption amount of a cryopump (10) while suppressing an influence on a pumping speed.

An object is to improve a sorption amount of a cryopump (10). A cryopump (10) includes a radiation shield (30) that is thermally coupled to a first cooling stage (22) of a cryocooler (14) and that extends from a cryopump intake port (12) into a cryopump container (16) in an axial direction such that a shield outer-side gap (31) is formed between the cryopump container (16) and the radiation shield (30), and a plurality of cryopanels (41, 42, 43) that are thermally coupled to a second cooling stage (24) of the cryocooler (14) and that are arranged in the axial direction in an inner space (36) of the radiation shield (30). The plurality of cryopanels (41, 42, 43) include a bottom cryopanel (43) disposed closest to the container bottom portion (16c) among the plurality of cryopanels (41, 42, 43) in the axial direction. The radiation shield (30) includes a shield lower portion (30b) extending toward the container bottom portion (16c) beyond the bottom cryopanel (43) in the axial direction, and the shield lower portion (30b) defines a shield bottom opening (34) that connects the shield outer-side gap (31) to the inner space (36).

To reduce safety risk and increase in the load on a work machine including an elevator cab, caused due to a traveling state of the machine in a state in which the elevator cab is elevated, a work machine including an elevator cab includes a control part configured to determine, based on information on a driving state of the work machine, whether a traveling state of the work machine is a predetermined traveling state in a state in which the elevator cab is elevated, and output an alert when determining that the traveling state of the work machine is the predetermined traveling state in the state in which the elevator cab is elevated.

An object is to improve refrigeration performance of a cryocooler (10). A cryocooler (10) includes: a first displacer (18a) and a second displacer (18b) that extend in series in an axial direction; a cryocooler cylinder (16) that accommodates the first displacer (18a) and the second displacer (18b); and a connector (22) that connects the first displacer (18a) and the second displacer (18b) in the axial direction. A first expansion chamber (32) and a radial clearance (50) connected to the first expansion chamber (32) are formed between the cryocooler cylinder (16) and the first displacer (18a). The first displacer (18a) has an outlet flow path (36b) connected to the first expansion chamber (32) via the radial clearance (50), and a bypass flow path (52) that bypasses at least a part of the radial clearance (50) and is connected to the first expansion chamber (32). The connector (22) is configured to open the bypass flow path (52) during an intake process to the first expansion chamber (32) and close the bypass flow path (52) during an exhaust process from the first expansion chamber (32).

A blow molding mechanism (1) includes an extension rod (16) that is inserted into a bottomed cylindrical intermediate molded product (200) including an opening portion (205) via the opening portion (205) and extends the intermediate molded product (200) when blow molding is performed on the intermediate molded product (200), the extension rod (16) includes a columnar main body (161) that extends inside the intermediate molded product (200) and a tip portion that is formed at a tip portion of the main body (161) and includes a contact portion (162) which is brought into contact with an inner wall (206) of the intermediate molded product (200), and a diameter (b) of the contact portion (162) is larger than a diameter (a) of the main body (161).

A blow molding mechanism (1) includes a second split mold (13) that includes a first region (131) which accommodates at least a part of a portion on an opening portion (205) side from a boundary line (L) between a portion of a bottomed cylindrical intermediate molded product (200) including the opening portion (205), which becomes a neck portion (331) of a final molded product (300), and a portion which becomes the shoulder portion (332), and a second region (132) which accommodates a portion on a side opposite to the opening portion (205) side from the boundary line (L) and an air output portion (11) that outputs air from an output port (112) of a tip portion of a long shaft pipe (111) inserted from the opening portion (205) into the intermediate molded product (200) to expand the intermediate molded product (200), in which the output port (112) is disposed on a first region (131) side of the boundary line (L) between the first region (131) and the second region (132).

Provided is a method for manufacturing a metal lamination-shaped article in which creep rupture strength satisfies a standard value in Inconel (registered trademark) 718 of a Ni-based alloy. A method for manufacturing a metal lamination-shaped article consisting of a Ni-based alloy includes: a homogenizing treatment step (1) of performing a homogenizing treatment on a metal lamination-shaped article consisting of the Ni-based alloy containing 50% by mass to 55% by mass of Ni, 17% by mass to 21% by mass of Cr, 2.8% by mass to 3.3% by mass of Mo, 4.75% by mass to 5.5% by mass of a total of Nb and Ta, 0.65% by mass to 1.15% by mass of Ti, 0.2% by mass to 0.8% by mass of Al, and the remainder consisting of Fe and inevitable impurities at 1,050°C or higher and 1,250°C or lower; a solutionizing treatment step (2) of performing a solutionizing treatment on the metal lamination-shaped article after the homogenizing treatment step (1); and an aging step (3) of performing an aging treatment at 650°C or higher and 720°C or lower after the solutionizing treatment step (2).

A work machine is provided that includes a sensor configured to detect information about stress or load occurring with respect to the work machine; and a controller configured to issue a notice when the stress or load occurring in a predetermined part of the work machine is greater than a predetermined value in magnitude. The stress or load is calculated based on the information obtained from the sensor.

Provided is an actuator (10) that enables identification of the state of rotation of an output shaft (44) and that is advantageous for size reduction of a speed reducer (20) and a motor (18).The actuator (10) includes a motor (18) that includes a motor shaft (16), a speed reducer (20) that is able to output rotation, of which a speed has been reduced to be lower than a speed of rotation of the motor shaft (16), to a driven member (12) via an output shaft (44), a counter-load side rotating body (22) that is disposed on a counter-load side with respect to the motor shaft (16) and that is provided to be relatively rotatable with respect to the motor shaft (16), and a rotation detector (26) for detection of rotation of the counter-load side rotating body (22), in which each of the output shaft (44) and the counter-load side rotating body (22) is couplable to the driven member (12) disposed outside the actuator (10).

Provided is a technique for identifying a lubrication state of a contact unit in an actuator (10) including a motor (14) and a speed reducer. An actuator (10) including a motor (14) and a speed reducer (16), includes: a contact unit (60A to 60F) including a plurality of contact members, in which during an operation of the actuator (10), the contact members adjacent to each other come into contact with each other with relative movement; a plurality of energization members (66A, 66B) provided separately from the contact unit (60A to 60F) and configured to cause an electric current to flow through an energization path (64) configured by a plurality of actuator constituent members via a contact location between the plurality of contact members; and a measurement unit (62) configured to measure a lubrication state between the plurality of contact members in the contact unit (60A to 60F) by causing an electric current to flow through the energization path (64).