Abstract: Provided is a work vehicle capable of preventing spillage of load materials from a bucket, even without adjusting an angle of the bucket in a scene where a traveling state is switched from a flat ground traveling to an inclined ground traveling. In a wheel loader 1 comprising a bucket 21 provided on the front of a vehicle body to scoop and discharge a work object, an inclination sensor 33 for detecting an inclination angle ? of the vehicle body is provided, and the controller 6 is configured to, in the case where a height position of the bucket 21 is higher than a predetermined height and it is determined that the vehicle body is in a state of being inclined rearward, activate a bucket cylinder 22 to a side for causing the bucket 21 to dump and correct an angle of the bucket 21.

Abstract: A wheel loader includes a working device, a lift cylinder 152 which is a hydraulic actuator that drives the working device, a hydraulic pump 220 that supplies hydraulic oil to the lift cylinder 152, a lift cylinder bottom pressure detector 252 that detects a pressure of the lift cylinder 152, a control valve 221 that controls the amount of hydraulic oil to be supplied from the hydraulic pump 220 to the lift cylinder 152, a vehicle acceleration detector 254 that detects a vehicle acceleration in a longitudinal direction, and a control device 240. The control device 240 determines whether the working device has started excavation, or not, based on the lift cylinder bottom pressure detected by the lift cylinder bottom pressure detector 252 and the vehicle acceleration detected by the vehicle acceleration detector 254.

Abstract: A wheel loader 100 includes a front working device 101, an automatic brake device that automatically applies braking to a vehicle body, a vehicle speed sensor 15 that detects a vehicle speed of the vehicle body, an angle sensor 37 that detects a height of the front working device 101, an obstacle detection sensor 29 that detects an obstacle present in surroundings of the vehicle body, and a brake controller 27 that controls operation of the automatic brake device on the basis of a detection signal from the obstacle detection sensor 29, wherein the brake controller 27 limits a braking force of the automatic brake device when the height h of the front working device 101 is equal to or greater than a predetermined height h1, or the vehicle speed v is equal to or greater than a predetermined vehicle speed v1, and the obstacle has been detected by the obstacle detection sensor 29.

Abstract: The work vehicle includes: a clutch device including a forward-travel clutch and a backward-travel clutch configured to cause, when being in an engagement state, the work vehicle to travel in a forward travel direction and a backward travel direction; a forward-backward travel instruction device configured to instruct the work vehicle to travel in the forward travel direction or the backward travel direction; a clutch state detection device configured to detect whether the forward-travel clutch and the backward-travel clutch are each in the engagement state; and a torque restriction section configured to restrict a maximum absorbing torque of the hydraulic pump to be low when a restriction condition holds, the restriction condition including a condition that a traveling direction of the work vehicle, which corresponds to an engagement state of the clutch device, and a traveling direction of the work vehicle, which is instructed by the forward-backward travel instruction device are opposite to each other.

Abstract: In a work vehicle provided with: a working device including an arm and a bucket; a vehicle speed detection device that detects a vehicle speed; a travel drive device that outputs a travel driving force increasing in response to a decrease in the vehicle speed at a time of excavation; and a control device that controls the travel driving force by the travel drive device, the control device is characterized by including a limit control section that limits the travel driving force during a specified time which passes from when the vehicle speed detected by the vehicle speed detection device becomes a predetermined first vehicle speed threshold value or less and the work vehicle plunges into an object to be excavated until an operation of the working device is started.

Abstract: An activity amount calculation system includes a plurality of detection units and an activity amount calculation device. The plurality of detection units detect a resident and output detection signals when the resident passes through doorways of a plurality of rooms. The calculation device includes a calculation unit and a summation unit. Upon detection of the resident by the detection units, the calculation unit calculates an activity amount of the resident based on relationships between detection units and reference activity amounts. The summation unit repeatedly calculates a total activity amount of the resident in a predetermined period by summing activity amounts calculated by the calculation unit.

Abstract: In a work vehicle provided with: a working device including an arm and a bucket; a vehicle speed detection device that detects a vehicle speed; a travel drive device that outputs a travel driving force increasing in response to a decrease in the vehicle speed at a time of excavation; and a control device that controls the travel driving force by the travel drive device, the control device is characterized by including a limit control section that limits the travel driving force during a specified time which passes from when the vehicle speed detected by the vehicle speed detection device becomes a predetermined first vehicle speed threshold value or less and the work vehicle plunges into an object to be excavated until an operation of the working device is started.

Abstract: A wheel loader includes a working device, a lift cylinder 152 which is a hydraulic actuator that drives the working device, a hydraulic pump 220 that supplies hydraulic oil to the lift cylinder 152, a lift cylinder bottom pressure detector 252 that detects a pressure of the lift cylinder 152, a control valve 221 that controls the amount of hydraulic oil to be supplied from the hydraulic pump 220 to the lift cylinder 152, a vehicle acceleration detector 254 that detects a vehicle acceleration in a longitudinal direction, and a control device 240. The control device 240 determines whether the working device has started excavation, or not, based on the lift cylinder bottom pressure detected by the lift cylinder bottom pressure detector 252 and the vehicle acceleration detected by the vehicle acceleration detector 254.

Abstract: A hybrid type work vehicle includes a power source, a traveling unit, a hydraulic work unit, an accelerator pedal, a brake pedal, an operation lever device, and a control apparatus. The control apparatus is configured such that when the current operation state is determined to be that of an excavation work which is a combined operation of the traveling unit and the hydraulic work unit and the output power limitation signal is outputted, the control apparatus limits the output power of the traveling unit. The control apparatus is also configured to decrease the tilting angle of the hydraulic pump, such that a ratio between the output power of the traveling unit and the output power of the hydraulic work unit is maintained at a preset ratio.

Abstract: The work vehicle includes: a clutch device including a forward-travel clutch and a backward-travel clutch configured to cause, when being in an engagement state, the work vehicle to travel in a forward travel direction and a backward travel direction; a forward-backward travel instruction device configured to instruct the work vehicle to travel in the forward travel direction or the backward travel direction; a clutch state detection device configured to detect whether the forward-travel clutch and the backward-travel clutch are each in the engagement state; and a torque restriction section configured to restrict a maximum absorbing torque of the hydraulic pump to be low when a restriction condition holds, the restriction condition including a condition that a traveling direction of the work vehicle, which corresponds to an engagement state of the clutch device, and a traveling direction of the work vehicle, which is instructed by the forward-backward travel instruction device are opposite to each other.

Abstract: An activity amount calculation system (100) includes a plurality of detection units (D1, D2) and an activity amount calculation device (10). The plurality of detection units (D1, D2) detect a resident and output detection signals when the resident passes through doorways of a plurality of rooms. The calculation device (10) includes a calculation unit (11) and a summation unit (12). Upon detection of the resident by the detection units (D1, D2), the calculation unit (11) calculates an activity amount of the resident based on relationships between detection units and reference activity amounts. The summation unit (12) repeatedly calculates a total activity amount of the resident in a predetermined period by summing activity amounts calculated by the calculation unit (11).

Abstract: The hybrid type work vehicle includes: a traveling unit having a traveling electric motor; a hydraulic work unit having a hydraulic pump; and a control apparatus having an operation determination section configured to input the operation amount of an operation lever device, the depression amount of an accelerator pedal and a brake pedal, and a vehicle speed and to determine the current operation state of the vehicle, and a power computation section configured to input the output value of an engine and the output value of a power storage device and to calculate and control the power of the traveling unit and the power of the hydraulic work unit.

Abstract: The system is provided with: a first heat exchanger which is interposed at an intersection between a rich solution supply line and a lean solution supply line, which has absorbed CO2 and H2S extracted from a bottom portion of an absorber, and a regenerated absorbent; a second heat exchanger which is interposed at an intersection between a semi-rich solution supply line and a branch line branched at the branch portion C from the lean solution supply line, and the lean solution; a merging portion which merges a branch line configured to supply the lean solution after heat exchange with the lean solution supply line; and a flow rate adjusting valve which is interposed in the lean solution supply line to adjust the distribution amount of the lean solution.

Abstract: A degradant concentration measurement device 14 according to the invention has an electric conductivity measurement instrument 71A measuring the electric conductivity of a lean solution 16 that is an acidic gas-absorbing solution and detection means 72 obtaining the concentration of a degradant contained in a lean solution 16 from the measured electric conductivity of the lean solution 16 based on the relationship between the previously-obtained electric conductivity of the lean solution 16 and the concentration of the degradant contained in the lean solution 16.

Abstract: The system includes: an absorber which brings an introduction gas into contact with an absorbent that absorbs CO2 and H2S; an absorbent regenerator which releases CO2 or the like to regenerate the absorbent; a second supply line which returns a regenerated absorbent to the absorber from the regenerator; a third supply line which extracts a semi-rich solution from the vicinity of a middle stage of the absorber, and introduces the semi-rich solution to the vicinity of the middle stage of the regenerator; and a semi-rich solution heat exchanger which is interposed at an intersection between the third supply line and the second supply line to perform the heat exchange between the semi-rich solution and the lean solution.

Abstract: An electric driving wheel type work vehicle has a traveling motor, an inverter for supplying the motor with three-phase power converted from DC power, a pre-driver circuit for supplying a gate signal to the inverter on the basis of an input PWM signal, a controller for outputting to the pre-driver circuit the PWM signal for controlling the driving of the motor, a parking brake, and a parking brake condition detector that detects the condition of the parking brake. When it is detected that the parking brake has been operated, the pre-driver circuit cuts off the output of the gate signal or the input of the PWM signal to the pre-driver circuit.

Abstract: A direct reduced iron manufacturing system includes a gas reformer for supplying steam to reform natural gas, a gas heater being a heating unit for heating a reformed gas reformed by the gas reformer to a predetermined temperature, a direct reduction furnace for reducing iron ore directly into reduced iron using a high-temperature reducing gas, an acid gas removal unit having an acid gas component absorber and a regenerator for releasing the acid gas, and a recovery gas introduction line for supplying a recovery gas released from the regenerator to each of a reforming furnace of the gas reformer and a furnace of the gas heater.

Abstract: A person detector detects a person in an area facing one door surface. An open/close detector detects whether the door is in an open or closed state. When a detected state of the door switches from a closed state to an open state, an open-state person detection information recorder records whether the person detector is detecting a person or not. When the state of the door detected by the open and close detection sensor switches from the open state to the closed state, a closed-state person detection information recorder records whether the person detector is detecting a person or not. A room entry and exit detector detects that there occurs an entry into the room and there occurs an exit out of the room on the basis of a content recorded by the open-state person detection information recorder and the closed-state person detection information recorder.

Abstract: A direct reduced iron manufacturing system includes a gas reformer for supplying steam to reform natural gas, a gas heater being a heating unit for heating a reformed gas reformed by the gas reformer to a predetermined temperature, a direct reduction furnace for reducing iron ore directly into reduced iron using a high-temperature reducing gas, an acid gas removal unit having an acid gas component absorber and a regenerator for releasing the acid gas, and a recovery gas introduction line for supplying a recovery gas released from the regenerator to each of a reforming furnace of the gas reformer and a furnace of the gas heater.