Abstract: A cryocooler includes: a compressor; a plurality of cold heads connected in parallel to the compressor; a pressure sensor that measures a pressure of a working gas on a supply side from the compressor to the plurality of cold heads or on a collection side from the plurality of cold heads to the compressor; and a controller configured to acquire, for each of the plurality of cold heads, individual pressure waveform data measured by the pressure sensor when the cold head is individually operated, and to operate the plurality of cold heads simultaneously and asynchronously based on the individual pressure waveform data of the plurality of cold heads.

Abstract: A speed reducer includes an output member to which a driven member is connected, in which the output member is formed of resin and includes a plurality of first screw holes into which fine-thread screws for connection of the driven member are screwed and each of which includes a bottom, and the output member is provided with a weight reduction portion between the plurality of first screw holes in a circumferential direction.

Abstract: A gear device that is incorporated in a food machine which is used in a process of handling food, includes a first gear, a second gear that meshes with the first gear, grease that is accommodated in an internal space in which a meshing portion between the first gear and the second gear is present, and a gap portion that allows the internal space to communicate with an external space, in which the first gear is made of fiber-reinforced resin, an accommodation amount of the grease is 1% or more and 30% or less of capacity of a grease accommodation space that is configured by a part of the internal space and accommodates the grease, and the grease is grease that does not correspond to food grease.

Abstract: A rotary valve of a cryocooler includes a valve stator, a valve rotor, a rotation member that rotates the valve rotor around an axis with respect to the valve stator, and a rotor holder connected to the valve rotor so as to rotate around an axis together with the valve rotor, and forming a low pressure section having a pressure lower than an ambient pressure between the valve rotor and the rotor holder so as to reduce an axial force of pressing the valve rotor against the valve stator. The rotation member is connected to the rotor holder so as to rotate the valve rotor around the axis via the rotor holder. The rotor holder is disposed between the rotation member and the valve rotor in an axial direction, and is movable in the axial direction with respect to the rotation member.

Abstract: An oil-lubricated cryocooler compressor that compresses a refrigerant gas of a cryocooler includes a liquid-cooled heat exchanger that cools the refrigerant gas and/or an oil through heat exchange with a coolant and a cooling controller that is configured to acquire a supply temperature of the coolant supplied to the liquid-cooled heat exchanger and to control a flow rate of the coolant of the liquid-cooled heat exchanger and/or an exhaust heat amount of the cryocooler compressor based on the acquired supply temperature of the coolant.

Abstract: A shovel includes a traveling lower body; a revolving upper body rotatably installed on the traveling lower body; an excavation attachment attached to the revolving upper body; and a control device, wherein the control device includes a setting unit to set a target trajectory as a trajectory to be followed by a predetermined part of the excavation attachment, based on information on a landform before excavation is started, and a target excavation volume.

Abstract: A shovel includes a lower traveling structure, an upper swing structure swingably mounted on the lower traveling structure, a work attachment attached to the upper swing structure and including a boom, an arm attached to the boom, and an end attachment attached to the arm, a first obtaining device configured to obtain data on the pose state of the work attachment, and a second obtaining device configured to obtain data on the pose state of the lower traveling structure or the upper swing structure. Predetermined control related to the movement of the work attachment is executed based on the data obtained by the first and second obtaining devices. Information on the type of the end attachment is obtained, and a response characteristic of the work attachment or the details of an operation for the work attachment during the predetermined control are corrected based on the obtained information.

Abstract: A method for operating a cryocooler includes: connecting a second compressor in series with a first compressor on a high pressure line or a low pressure line; connecting a buffer volume to the low pressure line via a supply valve; executing initial cooling for cooling an expander from an initial temperature to a cryogenic temperature in a state where the second compressor and the buffer volume are connected to the cryocooler; and executing a steady operation of maintaining the expander at the cryogenic temperature after the initial cooling. The execution of the initial cooling includes supplying a working gas to the expander by using the first compressor and the second compressor, and controlling the supply valve to keep a pressure of the high pressure line within a preset appropriate pressure range based on the measured pressure of the high pressure line.

Abstract: A cryocooler includes an expander provided with an expander motor including a motor rotary shaft, a displacer that changes a volume of an expansion space of a working gas by reciprocating linearly by the motor rotation shaft rotating, and a rotary valve that controls intake and exhaust of the working gas into the expansion space by rotating by the motor rotation shaft rotating, a pressure sensor that measures a pressure of the working gas and outputs a measurement signal indicating the measured pressure, and a controller that receives the measurement signal, detects a feature point appearing periodically in the measured pressure during an operation of the cryocooler, acquires a motor drive waveform indicating a command rotation speed of the motor rotary shaft determined to vary within one rotation of the motor rotary shaft, and outputs the motor drive waveform in synchronization with the feature point appearing periodically.

Abstract: A display device displays information image related to an excavation work, in an ambient environment image in a view of a work area or an attachment viewed from a shovel, or in a field of view of an operator viewing the work area or the attachment from the shovel. The shovel may include the display device. A management device may include a display apparatus, a communication device which communicates with the shovel, and a remote control device operated by a user to remotely control the shovel via the communication device.

Abstract: A surroundings monitoring system for a work machine includes an image capturing unit configured to capture an image of surroundings of the work machine and a display device configured to display the image of the surroundings of the work machine captured by the image capturing unit and a mark representing the position of a monitoring target. The display device is configured to display the mark in two or more different display forms.

Abstract: An internal meshing type gear device includes: an internal gear; and an external gear that meshes with the internal gear, in which, when a straight line passing through an external gear center and an internal gear center is defined as a gear center line, a pitch point between the external gear and the internal gear is positioned radially inside an external tooth tip circle and an internal tooth tip circle, an intersection point between a normal line to a contact point locus between the external gear and the internal gear and the gear center line is positioned between the pitch point and the external gear center, and the contact point locus is positioned in a meshing region between the external and internal tooth tip circles within an angle range in which an angle centered on the pitch point from the gear center line is 0 to ?/2 [rad].

Abstract: A cryopump includes an accommodation space for a condensed layer of gas, a first-stage cryopanel having an inner surface of the first-stage cryopanel disposed so as to surround the accommodation space, and a second-stage cryopanel disposed so as to be surrounded by the inner surface of the first-stage cryopanel together with the accommodation space. A first-stage heat load is incident on the inner surface of the first-stage cryopanel from outside the cryopump through an intake port, and the gas enters the accommodation space from outside the cryopump. The first-stage cryopanel is cooled to a temperature higher than a condensation temperature of the gas, the second-stage cryopanel is cooled to a temperature of the condensation temperature or less, and the condensed layer is deposited. The cryopump monitors the amount of condensed gas in the accommodation space based on a change in the first-stage heat load.

Abstract: An ion implanter includes: a plurality of devices which are disposed along a beamline along which an ion beam is transported; a plurality of neutron ray measuring instruments which are disposed at a plurality of positions in the vicinity of the beamline and measure a neutron ray from a neutron ray source which is generated in the beamline due to collision of a high-energy ion beam; and a control device which monitors at least one of the plurality of devices, based on a plurality of measurement values measured by the plurality of neutron ray measuring instruments.

Abstract: A vehicle body structure includes a support member of a vehicle body, and a reinforcement member disposed along a longitudinal direction of the support member of the vehicle body to reinforce the support member of the vehicle body. The reinforcement member is a processed product formed by shaping a tubular body, and includes a flange portion that protrudes on an outer peripheral portion and that is formed in the longitudinal direction of the support member of the vehicle body. The flange portion is joined to the support member of the vehicle body at a location other than locations where the support member of the vehicle body is joined to other members different from the reinforcement member.

Abstract: A shovel includes a lower traveling body; an upper turning body pivotably attached to the lower traveling body; an attachment attached to the upper turning body; and a processor that stores in a memory, or transmits to an external device, log information including information on the shovel and information on a peripheral environment of the shovel upon detecting that a degree of stability on a motion of the shovel becomes less than a predetermined reference level, or upon detecting an indication that the degree of stability on the motion of the shovel becomes lower than the predetermined reference level.

Abstract: A cryocooler includes: an expander capable of executing initial cooling for cooling from an initial temperature to a cryogenic temperature and a steady operation of maintaining the cryogenic temperature subsequent to the initial cooling; a high pressure line which is connected to the expander and through which a working gas taken into the expander flows; a low pressure line which is connected to the expander and through which a working gas exhausted from the expander flows; a pressure sensor that measures a pressure of the high pressure line; a buffer volume for storing the working gas; a supply valve that connects the buffer volume to the low pressure line; and a controller that controls the supply valve during the initial cooling based on the pressure of the high pressure line measured by the pressure sensor to keep the pressure of the high pressure line within a preset pressure range.

Abstract: A door beam structure for a vehicle side door includes a door beam having a hollow cross section, wherein the door beam includes: an outside portion forming a hollow flange of the door beam arranged to face a door skin, and an inside portion forming a hollow door beam body of the door beam.

Abstract: Provided is a crane including a boom. The crane hoists a suspended load through a hook from a tip of the boom, and position adjustment control for causing a position of the hook and a position of the tip of the boom to be close to each other as viewed in a vertical direction is performed until the suspended load is separated from a ground surface from a start of a hoisting motion.

Abstract: A cryopump includes a cryopanel disposed in a cryopump housing and including a non-combustible adsorbent, a heater heating the non-combustible adsorbent and the cryopanel, a purge valve connecting the cryopump housing to a purge gas source, a rough valve connecting the cryopump housing to a rough pump, a sensor that generates a measurement signal indicating a temperature of the non-combustible adsorbent or an internal pressure of the cryopump housing, and a controller that controls at least one of the heater, the purge valve, and the rough valve based on the measurement signal so as to execute either a sublimation regeneration sequence for sublimating water from the non-combustible adsorbent by exposing the non-combustible adsorbent to a vacuum atmosphere or a dehydration sequence for dehydrating the non-combustible adsorbent by exposing the non-combustible adsorbent to a dry atmosphere at room temperature or a temperature higher than the room temperature.