Abstract: A circuit device includes: a first heat sink having a first upper surface; a plurality of first partition plates and second partition plates attached to the first upper surface; a sealing material; a first circuit component; and a printed wiring board. A normal direction of the first upper surface is along a first direction. The first partition plates extend in a second direction orthogonal to the first direction. The second partition plates extend in a third direction orthogonal to the first direction and the second direction. The sealing material is made to fill a space defined by two adjacent first partition plates, two adjacent second partition plates, and the first upper surface. The first circuit component is disposed in the sealing material. The printed wiring board is disposed on the first partition plate and the second partition plate, and is electrically connected to the first circuit component.

Abstract: A circuit device includes: a heat sink having an upper surface orthogonal to a first direction; a plurality of first partition plates attached to the upper surface and extending in a second direction orthogonal to the first direction; a plurality of second partition plates attached to the upper surface and extending in a third direction orthogonal to the first direction and the second direction; a circuit component; a substrate electrically connected to the circuit component; and a first heat transfer member. The circuit component is housed in a space surrounded by two adjacent first partition plates, two adjacent second partition plates, and the upper surface. The first heat transfer member is disposed between the first partition plate and the circuit component.

Abstract: A hydraulic system for a work machine, which includes a first hydraulic pump to deliver operation fluid, a second hydraulic pump to deliver pilot fluid, a first hydraulic actuator configured to control flow rate of the operation fluid based on the pilot pressure applied to the pressure receivers, a manual operator configured to operate the first hydraulic actuator, having an operation lever to move toward both directions, operation valves to change pressure of the pilot fluid in accordance with movement of the operation lever, and a discharge fluid tube to drain the pilot fluid from the operation valves. The hydraulic system includes an actuating valve in the discharge fluid tube and configured to reduce pressure of the pilot fluid in the discharge fluid tube.

Abstract: In a working machine, a controller is configured or programmed to control actuation of a blocking switching valve and a solenoid valve, to cause the blocking switching valve to unblock a first pilot fluid passage to perform switching to a first operation pattern in which an operation device operates a first device via a first control valve and a first hydraulic actuator, and cause the blocking switching valve to block a second pilot fluid passage and control the solenoid valve based on pilot pressure detected by a pressure detector to perform switching to a second operation pattern in which the operation device operates a second device via a second control valve and a second hydraulic actuator.

Abstract: A system comprising a work machine and an attachment removably coupled with the work machine. The attachment includes an identification module comprising a transceiver configured to communicate with a control system of the work machines so as to improve the functionality and efficiency of the attachment and of the work machines.

Abstract: A system comprising a work machine and an attachment removably coupled with the work machine. The attachment includes an identification module comprising a transceiver configured to communicate with a control system of the work machines so as to improve the functionality and efficiency of the attachment and of the work machines.

Abstract: A system comprising a work machine and an attachment removably coupled with the work machine. The attachment includes an identification module comprising a transceiver configured to communicate with a control system of the work machines so as to improve the functionality and efficiency of the attachment and of the work machines.

Abstract: A system comprising a work machine and an attachment removably coupled with the work machine. The attachment includes an identification module comprising a transceiver configured to communicate with a control system of the work machines so as to improve the functionality and efficiency of the attachment and of the work machines.

Abstract: A system comprising a work machine and an attachment removably coupled with the work machine. The attachment includes an identification module comprising a transceiver configured to communicate with a control system of the work machines so as to improve the functionality and efficiency of the attachment and of the work machines.

Abstract: A system comprising a work machine and an attachment removably coupled with the work machine. The attachment includes an identification module comprising a transceiver configured to communicate with a control system of the work machines so as to improve the functionality and efficiency of the attachment and of the work machines.

Abstract: A working machine includes a controller configured or programmed to perform an automatic deceleration for automatically decelerating a left traveling motor and a right traveling motor rotated at a second speed by shifting from the second speed to the first speed, and to determine a deceleration threshold that is used for judging whether the automatic deceleration has to be performed or not.

Abstract: A working machine includes a machine body, a left traveling device located left on the machine body, a right traveling device located right on the machine body, and a controller configured or programmed to perform automatic deceleration to automatically reduce a first rotation speed of a left traveling motor and a second rotation speed of a right traveling motor by shifting a speed stage of each of the left and right traveling motors from a second speed stage to a first speed stage that is lower than the second speed stage. The controller is configured or programmed to: not perform the automatic deceleration when the first rotation speed or the second rotation speed is equal to or higher than a predetermined rotation speed; and perform the automatic deceleration when the first rotation speed and the second rotation speed are less than the predetermined rotation speed.

Abstract: A working machine includes a machine body, a working device provided on the machine body movably up and down with respect to the machine body, a protector provided on the machine body to protect an operator's seat on the machine body, a detector provided on the protector to detect an obstacle higher than the protector, and a controller configured or programmed to, when the detector detects the obstacle, perform at least one process to prevent the working device from contacting the obstacle.

Abstract: In a thermal decomposition extruder, a hopper has an upper end closed. A sidewall of the hopper is provided with an emission hole for emission of decomposition gas produced during thermal decomposition of a polymer, to the outside of the hopper.

Abstract: A hydraulic system for a working machine includes a variable displacement hydraulic pump, a plurality of hydraulic actuators, and a plurality of control valves. Each of the control valves includes an input port, an output port, and a flowrate reduction section. At least one of the control valves includes a flowrate increase section. The hydraulic actuators are a boom cylinder, a working tool cylinder, and an auxiliary actuator. The control valves are a boom control valve for controlling the boom cylinder, a working tool control valve for controlling the working tool cylinder, and a first auxiliary control valve for controlling the auxiliary actuator. The boom control valve and the working tool control valve each include the flowrate reduction section, and the first auxiliary control valve includes the flowrate reduction section and the flowrate increase section.

Abstract: A hydraulic system for a working vehicle includes a first hydraulic pump to deliver pilot fluid to a control valve for a hydraulic actuator whose highest load pressure acts on a first fluid passage, and a second hydraulic pump to deliver hydraulic fluid whose pressure acts on a second fluid passage. A hydraulic controller is operable to control a load-sensing (LS) differential pressure between the highest load pressure and a delivery pressure of the hydraulic fluid from the second hydraulic pump. A third fluid passage to which the second hydraulic pump delivers the hydraulic fluid branches to a fourth fluid passage for flow of the pilot fluid. A solenoid valve is operable to change a pilot pressure of the pilot fluid for the hydraulic controller, and a controller is configured or programmed to control the solenoid valve to adjust the pilot pressure to change the LS differential pressure.

Abstract: A working machine includes a prime mover, a traveling pump to be driven by the prime mover to output operation fluid, a traveling motor to be driven by the operation fluid outputted from the traveling pump and to change a motor speed between a first speed and a second speed higher than the first speed, a machine body on which the prime mover, the traveling pump, and the traveling motor are arranged, a traveling switching valve to be switched between a first state allowing the traveling motor to rotate at the first speed and a second state allowing the traveling motor to rotate at the second speed, and a controller to reduce a revolving speed of the prime mover based on a traveling condition of the machine body in switching the traveling switching valve between an accelerating state to switch the traveling switching valve from the first state to the second state and a decelerating state to switch the traveling switching valve from the second state to the first state.

Abstract: A hydraulic system for a working machine includes first and second hydraulic actuators actuated by hydraulic fluid delivered by a hydraulic pump, a first flow rate controller to control a first supply flow rate of hydraulic fluid supplied to the first hydraulic actuator to match a first required flow rate, a second flow rate controller to control a second supply flow rate of hydraulic fluid supplied to the second hydraulic actuator to match a second required flow rate, and a special flow rate control system to, if a sum of the first and second required flow rates is greater than a maximum delivery flow rate of the hydraulic pump, reduce the first supply flow rate to allow the second supply flow rate to approach the second required flow rate.

Abstract: A hydraulic system for a working machine includes a hydraulic pump to output a hydraulic fluid, an operation device operable to supply a pilot fluid in accordance with an amount by which the operation device is operated, a hydraulic actuator to be operated by the hydraulic fluid, a pilot fluid passage connected to the operation device, a first control valve connected to the pilot fluid passage and to be operated by the pilot fluid to control a flow of the hydraulic fluid, a second control valve to be operated by the pilot fluid to control a flow of the hydraulic fluid, a proportional valve to change a pressure of the pilot fluid to operate the second control valve, a pressure detector provided in the pilot fluid passage to detect a pressure in the pilot fluid passage, and a controller to control the proportional valve based on the pressure.

Abstract: A working machine includes a prime mover, a traveling pump configured to deliver hydraulic fluid at a flow rate corresponding to an angle of the swashplate, a traveling motor configured to be rotated by the hydraulic fluid delivered from the traveling pump so as to have a rotation speed shiftable between a first speed and a second speed higher than the first speed, a traveling change-over valve shiftable between a first state to set the rotation speed of the traveling motor to the first speed and a second state to set the rotation speed of the traveling motor to the second speed, an operation device, an operation valve configured to change the angle of the swashplate of the traveling pump according to operation of the operation device, an actuation valve provided upstream or downstream of the operation valve and fluidly connected to the operation valve, and a controller configured or programmed to output a control signal to control the actuation valve in such a way that, when the traveling change-over valve i