Abstract: A work vehicle obtains determination information from information upon detecting inverting operation, the information upon detecting inverting operation indicating a traveling state of the work vehicle when an advancing direction detection device detects an inverting operation of an advancing direction switching device for inverting an advancing direction of the work vehicle while the work vehicle travels; decreases a first traveling instruction for allowing the work vehicle to travel in the advancing direction of the work vehicle upon the detection of the inverting operation, and increases a second traveling instruction for allowing the work vehicle to travel in the direction opposite to the advancing direction of the work vehicle upon the detection of the inverting operation, after detecting the inverting operation; and sets the first traveling instruction to 0 when speed information indicating a traveling state of the work vehicle becomes the determination information.

Abstract: A forklift includes a hydraulic pump being a variable displacement pump driven by an engine, a hydraulic motor driven with fluid from the pump, a storage storing first and second groups, and a predetermined lift pressure setting value, the first group including output characteristics each representing a relation between a rotational speed of the engine and a torque of the engine for each lift pressures, the second group including output characteristics each representing a relation between the rotational speed and the torque for each pump pressures, and determining a greater one of first and second torques as a target torque of the engine, the first torque being calculated from one selected from the first group using the lift pressure setting value or an actual lift pressure and the rotational speed, the second torque being calculated from one selected from the second group using the pump pressure and the rotational speed

Abstract: A work vehicle includes an accelerator operation amount generator receiving an actual accelerator operation amount of an accelerator operator to generate a control accelerator operation amount; an engine controller controlling the engine according to the control accelerator operation amount; and a storage storing a table in which an increasing speed for the control accelerator operation amount is set, wherein the accelerator operation amount generator obtains a difference between a converted accelerator operation amount of the accelerator operator converted from a rotating speed of the engine in a current control cycle and a control accelerator operation amount obtained in the last control cycle, determines an increasing speed of the control accelerator operation amount from the difference by referring to the table, and changes the control accelerator operation amount to an actual operation amount in the current control cycle with the determined increasing speed.

Abstract: A work vehicle includes a variable displacement hydraulic pump driven by an engine, a hydraulic motor forming a closed circuit with the pump and driven by hydraulic fluid discharged from the pump, wheels driven by the motor to allow the work vehicle to travel, a selector detecting an operating state of a switch switching the traveling of the work vehicle between forward and backward, and a controller. When the selector detects a reversal operation of the switch to reverse the traveling direction when the work vehicle travels, the controller sets relationship between the vehicle speed of the work vehicle and the upper limit of the rotational speed of the engine such that the upper limit increases as the absolute value of the vehicle speed approaches zero. The controller obtains an upper limit of the rotational speed from the relationship and a vehicle speed of the work vehicle.

Abstract: A work vehicle including: a traveling hydraulic pump of a variable displacement type driven by engine; a hydraulic motor forming a closed circuit with the traveling hydraulic pump and driven by operating oil discharged from the traveling hydraulic pump; a drive wheel driven by the hydraulic motor; and a control device determining whether an operator of the work vehicle has an intention of decelerating the work vehicle, and when the operator has an intention of decelerating the work vehicle and when the work vehicle starts to increase its speed, the control device causes a capacity ratio obtained by dividing a capacity of the hydraulic motor by a capacity of the traveling hydraulic pump, to be equal to or larger than a value when the work vehicle starts to increase its speed, according to an increasing amount in the speed of the work vehicle.

Abstract: Provided is a forklift equipped with a variable displacement traveling hydraulic pump driven by an engine, a hydraulic motor that forms a closed circuit with the traveling hydraulic pump therebetween and is driven by hydraulic oil discharged from the traveling hydraulic pump, and driving wheels driven by the hydraulic motor. An accelerator opening is calculated by correcting an accelerator opening detected by an accelerator opening sensor, using a greater one of a first cut-off frequency calculated from the accelerator opening detected by the accelerator opening sensor, and a second cut-off frequency calculated from a corrected accelerator opening calculated at a timing before the first cut-off frequency is calculated.

Abstract: A forklift including a variable displacement HST pump driven by an engine, a hydraulic motor that forms a closed circuit with the HST pump therebetween and is driven by hydraulic oil discharged from the HST pump, and driving wheels driven by the hydraulic motor, wherein a control device calculates an inching rate corresponding to an operation amount of an inching pedal, and sets a lower limit of the inching rate to a value greater than 0, only in a state in which both of an accelerator pedal and the inching pedal are operated.

Abstract: Provided is a forklift equipped with a variable displacement traveling hydraulic pump driven by an engine, a hydraulic motor that forms a closed circuit with the traveling hydraulic pump therebetween and is driven by hydraulic oil discharged from the traveling hydraulic pump, and driving wheels driven by the hydraulic motor. An accelerator opening is calculated by correcting an accelerator opening detected by an accelerator opening sensor, using a greater one of a first cut-off frequency calculated from the accelerator opening detected by the accelerator opening sensor, and a second cut-off frequency calculated from a corrected accelerator opening calculated at a timing before the first cut-off frequency is calculated.

Abstract: A forklift including a variable displacement HST pump driven by an engine, a hydraulic motor that forms a closed circuit with the HST pump therebetween and is driven by hydraulic oil discharged from the HST pump, and driving wheels driven by the hydraulic motor, wherein a control device calculates an inching rate corresponding to an operation amount of an inching pedal, and sets a lower limit of the inching rate to a value greater than 0, only in a state in which both of an accelerator pedal and the inching pedal are operated.

Abstract: In order to provide a forklift capable of performing an inching control suitable for a specific work and a running operation of the forklift and an inching control method of the forklift, an inching ratio calculating unit calculates an inching ratio, a target engine speed calculating unit calculates a target engine speed, a modulation control unit sets a time constant of the inching ratio in response to a speed difference between the target engine speed and an actual engine speed and outputs a correction inching ratio having the time constant set thereto, a multiplication unit outputs a correction absorption torque obtained by multiplying the correction inching ratio by a target absorption torque, and a HST pump electromagnetic proportional control output current converting unit outputs a current instruction value to a pump capacity setting unit.

Abstract: An engine control device for a forklift that suppresses an increase in fuel consumption amount and noise by limiting an engine rotation speed when the forklift is driven without the need to increase the engine speed according to the accelerator operation even when the accelerator is depressed hard. Determining means in a controller determines whether all of the following conditions are satisfied: a neutral position of the traveling direction instructing means; a lift raising switch and first, second and third attachment switches are turned off. When all of the above conditions are satisfied, it is determined whether the forklift is driven in any of a plurality of states. An engine control means generates and outputs a control command to obtain the engine speed based on the accelerator pedal depression with the upper limit value of the engine speed set as an upper limit value of the engine speed.

Abstract: An engine-powered forklift truck including a work device which is hydraulically driven by an oil hydraulic pump whose driving source is an engine, and including a load handling interlock mechanism which brings a work device operation into a locked state by turning a key switch off or turning a seat switch off, includes: a release control apparatus configured to, when the locked state exists, release the locked state on condition that the key switch is ON, the seat switch is ON, and the engine is rotated under a predetermined engine speed or more.

Abstract: In order to provide a forklift capable of performing an inching control suitable for a specific work and a running operation of the forklift and an inching control method of the forklift, an inching ratio calculating unit calculates an inching ratio, a target engine speed calculating unit calculates a target engine speed, a modulation control unit sets a time constant of the inching ratio in response to a speed difference between the target engine speed and outputs a correction inching ratio having the time constant set thereto, a multiplication unit outputs a correction absorption torque obtained by multiplying the correction inching ratio by a target absorption torque, and a HST pump electromagnetic proportional control output current converting unit outputs a current instruction value to a pump capacity setting unit.

Abstract: In an engine-overrun-preventing control device, if an engine speed exceeds a maximum speed, a minimum value of an inching rate is set such that higher the actual engine speed results in a higher minimum value of an inching rate. The hydraulic pump displacement is adjusted to obtain a higher inching rate between the minimum value of the inching rate and an inching rate set based on a brake stroke. If the engine speed exceeds a commanded speed and a pressure time-rate-of-change at the pump intake exceeds a prescribed value, the minimum value of the inching rate is set such that the higher the pressure time-rate-of-change, the higher the minimum value of the inching rate. The pump displacement is adjusted to obtain a higher inching rate between the minimum value of the inching rate set based on the pressure time-rate-of-change and the inching rate set based on the brake stroke.

Abstract: In an engine-overrun-preventing control device, if an engine speed exceeds a maximum speed, a minimum value of an inching rate is set such that higher the actual engine speed results in a higher minimum value of an inching rate. The hydraulic pump displacement is adjusted to obtain a higher inching rate between the minimum value of the inching rate and an inching rate set based on a brake stroke. If the engine speed exceeds a commanded speed and a pressure time-rate-of-change at the pump intake exceeds a prescribed value, the minimum value of the inching rate is set such that the higher the pressure time-rate-of-change, the higher the minimum value of the inching rate. The pump displacement is adjusted to obtain a higher inching rate between the minimum value of the inching rate set based on the pressure time-rate-of-change and the inching rate set based on the brake stroke.

Abstract: An engine control device for a forklift that suppresses an increase in fuel consumption amount and noise by limiting an engine rotation speed when the forklift is driven without the need to increase the engine speed according to the accelerator operation even when the accelerator is depressed hard. Determining means in a controller determines whether all of the following conditions are satisfied: a neutral position of the traveling direction instructing means; a lift raising switch and first, second and third attachment switches are turned off. When all of the above conditions are satisfied, it is determined whether the forklift is driven in any of a plurality of states. An engine control means generates and outputs a control command to obtain the engine speed based on the accelerator pedal depression with the upper limit value of the engine speed set as an upper limit value of the engine speed.

Abstract: A Web page creation support system includes a customer terminal unit (300), a Web page creation support server (100) which is accessible from the customer terminal unit (300) via a network, and a creator terminal unit (400) for performing a Web page creation job. The Web page creation support server (100) controls Web page information of the customer terminal unit (300) in relation to template information. The server can cause the creator terminal unit (400) to create the Web page information in response to a creation request from the customer terminal unit (300) in accordance with the template information, thereby providing an environment in which Web page creation can be easily carried out on the network.

Abstract: A shake compensating device for optical devices includes an optical system for forming an image of an object; a reflecting surface placed in the optical path of the optical system, a first substrate having a first electrode, placed adjacent to the reflecting surface; a second substrate fixed to an optical device, placed opposite to the first substrate and having a second electrode at a position opposite to the first electrode; a voltage control circuit for applying voltages across the first electrode and the second electrode, one of which is divided into a plurality of electrodes; and a detecting unit for detecting the shake angle of the optical device. In this case, the voltage control circuit controls the voltages applied across the divided electrodes and the other electrode opposite thereto in accordance with the output of the detecting unit.

Abstract: A main body of an opening and closing member is arranged so as to cover a handling hole from one side of a wall, such as a container wall. The opening and closing member is mounted to the container by engaging an engagement portion with a flange formed at the periphery of the handling hole. When a user inserts a hand into the handling hole and pushes the main body, the main body moves away from the wall, and the handling hole is uncovered. By so doing, the user can insert his or her hand into the handling hole and carry the container or other object. Then, when the user removes his or her hand from the handling hole, the main body moves toward the wall, and an outer periphery of the main body contacts the wall at the periphery of the handling hole and returns to the original position. Thus, the handling hole is covered from one side of the wall. By so doing, dirt, water and/or the like can be suppressed from passing through the handling hole.

Abstract: A shutter device comprising a fixed member which has a plurality of electrodes arranged on a surface, a light-transmitting region which is provided in the fixed member, a light-shielding member which is able to move between two positions where the light-transmitting region is closed and opened, respectively, and which have a plurality of electret parts, and a drive circuit which periodically applies a voltage to the electrodes provided on the fixed member, thereby to generate an electrostatic force acting on the electret parts of the light-shielding member and to drive the light-shielding member.