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

Abstract: A membrane defect inspection method is for a membrane module set including a plurality of membrane modules connected in parallel under a straight pipe portion of gas detection piping extending in a horizontal direction and communicating with primary spaces in the plurality of membrane modules to which raw water is supplied or secondary spaces. The method includes a gas injection process where gas is injected into spaces opposite to the primary spaces or the secondary spaces communicating with the gas detection piping while the gas detection piping is filled with water, and an echo detection process where an ultrasonic sensor is brought into contact with an end portion of the straight pipe portion of the gas detection piping, and a reflected wave of an ultrasonic wave transmitted from the ultrasonic sensor is detected.

Abstract: A work machine includes: a body including: a body frame; a driver's seat at a central portion of the body; a power source at a back portion of the body; and a front-wheel unit disposed at a front portion of the body and extending in a left-right direction of the body, wherein the body has a forward portion provided with at least one first holder configured to hold a rope and/or allowing the rope to pass therethrough. The forward portion is provided with two or more first holders which are each usable as an independent holder or which are usable in conjunction with each other to allow a rope to pass through both holders.

Abstract: A working machine includes: a support bracket provided on a machine body and including a boom pivotal support portion and a cylinder pivotal support portion; a boom pivotally supported by the boom pivotal support portion; a boom cylinder pivotally supported at the cylinder pivotal support portion and the boom, and causing the boom to swing upward and downward; a hydraulic hose extended through the support bracket from the rear of the support bracket to the front of the support bracket and connected to the boom cylinder; a first clamp to retain the hydraulic hose on the support bracket; and a second clamp to retain the hydraulic hose on the boom cylinder. The support bracket includes a through hole through which the hydraulic hose is passed in a fore-and-aft direction. The first clamp is disposed rearward of the through hole and forward of the rear end of the boom shaft.

Abstract: A protection mechanism for a working vehicle includes a roof above an operator's seat and including a cutout extending along a top-bottom direction, and an electric device at least partially located in the cutout. The cutout has a dimension along a vehicle-body-width direction that is uniform or substantially uniform along a front-to-rear direction or increases in the front-to-rear direction. The cutout has a thickness along the top-bottom direction that decreases in the front-to-rear direction. The roof include, in an upper surface thereof, a first groove located on an opposite side of the cutout from the electric device and extending in a direction away from the cutout.

Abstract: A hose support structure includes a first round bar and a second round bar provided on a mounting surface of a first plate and extending in a first direction. A first restraint and a second restraint face the mounting surface in a second direction and are provided between the first round bar and the second round bar in a third direction. The first restraint extends from a first proximal end toward a first distal end in a fourth direction, and the second restraint extends in a fifth direction opposite to the fourth direction from a second proximal end connected to the first proximal end. A third restraint is provided opposite to the second restraint with respect to the first restraint in the first direction. At least a part of the second restraint is separated from the mounting surface by a second distance shorter than the first distance in the second direction.

Abstract: A fastened member such as a hinge which is a metal fastened member to be fastened with at least one fastener to at least one attachment surface of at least one target object such as a construction machine to which the fastened member is to be attached, the at least one target object containing steel, the fastened member including at least one contact surface to make contact with the at least one attachment surface, the at least one contact surface at least partially including at least one exposure portion where material having a higher ionization tendency than steel is exposed, wherein a portion of the fastened member that is other than the at least one contact surface is coated with a coating.

Abstract: A working machine includes a prime mover, a traveling device, a traveling motor, a traveling pump, a circulation fluid passage, a traveling switching valve shiftable between a first state corresponding to a first speed of a hydraulic motor and a second state corresponding to a second speed of the hydraulic motor, a brake, an actuation valve configured to output the hydraulic pressure applied to the traveling pump, and change the hydraulic pressure output therefrom, and a controller configured or programmed to control the traveling switching valve, the brake and the actuation valve, and being capable of activating a first mode. The controller is configured or programmed to, when activating the first mode, shift the brake into a braking state, shift the traveling switching valve into the second state, and control the actuation valve so as to set the hydraulic pressure output from the actuation valve to a predetermined pressure.

Abstract: A mower blade assembly, a mower including such an assembly, and methods of replacing a blade insert of the mower blade assembly are disclosed. The mower blade assembly includes a main body and a blade insert removably attachable to the main body between an operable position and a removed position. One of the main body and the blade insert includes a mounting tab and the other of the main body and the blade insert includes a mounting pocket sized and shaped to receive the mounting tab when the blade insert is in the operable position. The mounting pocket includes an opening being defined by a closed perimeter provided in an end face of the other of the main body and the blade insert. The method includes slidably coupling the blade insert to the main body of the mower blade, and removably securing the blade insert to the main body.

Abstract: A ring body to be provided in a pipe joint which can prevent a spigot from separating from a socket by a spigot protrusion engaging with a lock ring from the back side of the socket in the separation direction A of the spigot. The ring body includes a main body part which is inserted into between the inner peripheral surface of the socket and the outer peripheral surface of the spigot to be provided in the pipe joint, and a deviation prevention member that prevents the main body part from deviating to the opening end side of the socket, wherein the main body part moves the spigot in the pipe radial direction with respect to the socket, thereby reducing deviation in the pipe radial direction between the pipe axis of a first pipe and the pipe axis of a second pipe.

Abstract: A monitoring system for a working machine includes a boarding detector to detect boarding and alighting of an operator, the boarding detector being provided in the working machine, a position detector to detect a position based on a signal sent from a positioning satellite when the boarding detector detects the alighting of the operator, a transmitter to transmit, to a management machine, positional information representing the position detected by the position detector, and a controller to move the management machine based on the positional information when the boarding detector detects the alighting, the controller being provided in the management machine.

Abstract: An engine-equipped vehicle capable of preventing gear noise and gear wear when the engine is started is provided. A multicylinder engine, a gear transmission that shifts power from the multicylinder engine by a shift operation, a centrifugal clutch arranged in a power transmission path from the multicylinder engine to the gear transmission, and an electronic control device that controls an operation of the multicylinder engine are included and the engine is configured to be started with a partial cylinder operation start where under control of the electronic control device, only some cylinders are operated and an operation of other cylinders is stopped.

Abstract: A working machine includes a first traveling fluid passage connected to a first pressure-receiving portion, a second traveling fluid passage connected to a second pressure-receiving portion, a third traveling fluid passage connected to a third pressure-receiving portion, a fourth traveling fluid passage fluidly connected to a fourth pressure-receiving portion, and a connection fluid passage connecting at least two of the first, second, third and fourth pressure-receiving portions to each other. When a traveling operation member is operated, operation fluid flows to the first pressure receiving portion through the first traveling fluid passage, to the second pressure receiving portion through the second traveling fluid passage, to the third pressure receiving portion through the third traveling fluid passage, and to the fourth pressure receiving portion through the fourth traveling fluid passage.

Abstract: A spark ignition type engine adjusts a base lower limit value of a valve opening degree of an ISC valve to avoid excessive engine rotation that may occur when an increase correction by atmospheric pressure is performed. When a detected engine temperature becomes lower, the base lower limit value of the ISC valve opening degree is increased to the fully open side, and the base lower limit value is corrected to increase to the fully open side with an increase correction value on the basis of a detected atmospheric pressure in an engine middle-high temperature range where the engine temperature exceeds a predetermined value, and the increase correction value is increased to the fully open side as the detected atmospheric pressure becomes lower, and the increase correction is prohibited in an engine low temperature range where the engine temperature is equal to or lower than the predetermined value.

Abstract: A work vehicle includes a driving wheel provided in a machine body, a motor for inputting a rotational force to the driving wheel, a traveling control device for acquiring an output instruction for the motor according to an operation of a maneuvering lever, a traveling control unit for controlling driving of the motor in accordance with the output instruction, a battery for reserving energy source for driving the motor, a remaining amount detection section for detecting a remaining amount of the energy source in the battery, and a restriction section for restricting a maximum speed of the machine body to a preset speed irrespectively of the output instruction if the remaining amount of the energy source is equal to or smaller than a preset first threshold value.

Abstract: A working machine includes a controller to perform automatic deceleration to automatically reduce a first rotation speed of a left traveling motor to output a power to a left traveling device on a left portion of a machine body and a second rotation speed of a right traveling motor to output a power to a right traveling device on a right portion of the machine body by shifting a speed stage of each of the left and right traveling motors from a second speed to a first speed that is lower than the second speed. The controller is configured or programmed to determine, based on the second rotation speed, a left threshold for judging whether to perform the automatic deceleration in left pivot turn of the machine body, and to determine, based on the first rotation speed, a right threshold for judging whether to perform the automatic deceleration in right pivot turn of the machine body.

Abstract: An agricultural machine includes a vehicle body including a front wheel and a rear wheel, a hood at a front portion of the vehicle body, a protector provided to the vehicle body to protect an operator seat, and an obstacle detector to detect an obstacle, the obstacle detector being located in front of the protector outwardly in a width direction of the hood.

Abstract: It is possible to precisely manage a task in operation by precisely inferring the task with use of a trained model that is constructed by machine learning. A task management device (3) includes: a first outputting section (312) configured to output a detection class that is inferred to appear in a task at a time point at which a captured image is obtained, the detection class being inferred by inputting the captured image to an index inference model (321); and a task inferring section (314) configured to infer, on the basis of an output result from the first outputting section, the task being carried out at the time point at which the captured image is obtained.

Abstract: A floor mat arranged in a working machine includes a floor portion, a wall portion arranged on a circumferential portion of the floor portion, and an opening portion arranged on a part of a connecting portion of the wall portion, the connecting portion connecting to the floor portion. The floor mat includes a mat main body arranged on the floor portion, a covering portion configured to cover the opening portion, and an connecting portion configured to connect the covering portion flexibly to a circumferential portion of the mat main body.