Abstract: A blade control device includes: a corrected design surface generation unit that generates a corrected design surface connecting a first surface existing in front of a work vehicle and a second surface having a different slope from a slope of the first surface on an initial design surface indicating a target shape of an excavation object to be excavated using a blade of the work vehicle; and a blade control unit that outputs a control command to control a height of the blade based on the corrected design surface.

Abstract: A blade control device includes: a corrected design surface generation unit that generates a corrected design surface connecting a first surface existing in front of a work vehicle and a second surface having a different slope from a slope of the first surface on an initial design surface indicating a target shape of an excavation object to be excavated using a blade of the work vehicle; and a blade control unit that outputs a control command to control a height of the blade based on the corrected design surface.

Abstract: A blade control method includes: acquiring a design surface indicating a target shape of an excavation object to be excavated by a blade supported by a vehicle body of a work vehicle, the design surface including a first surface present in front of the work vehicle and a second surface disposed below the first surface and forming a level difference with a front end portion of the first surface; acquiring an observed pitch angle indicating an inclination angle of the vehicle body in a longitudinal direction; and calculating a specific part height indicating a height-direction distance between a specific part of the work vehicle and the second surface in a state in which at least a part of the vehicle body is positioned on the first surface and the blade is positioned above the second surface.

Abstract: A blade control method includes: acquiring a design surface indicating a target shape of an excavation object to be excavated by a blade supported by a vehicle body of a work vehicle, the design surface including a first surface present in front of the work vehicle and a second surface having a slope different from a slope of the first surface; acquiring an observed pitch angle indicating an inclination angle of the vehicle body in a longitudinal direction; and calculating a planned pitching angle indicating a deviation between the observed pitch angle and a design surface pitch angle indicating an inclination angle of the second surface in a state in which the vehicle body is positioned on the first surface and the blade is positioned above the second surface.

Abstract: A light-emitting device includes: a resin package including: a lead part including a first lead and a second lead, each including a main body portion and a raised portion connected to the main body portion, wherein an upper surface of each of the first lead and the second lead includes a first primary surface portion in the main body portion and a curved portion in the raised portion in a cross-sectional view taken in a direction perpendicular to an upper surface of the lead part, and wherein the curved portion is continuous with and curved upward from an end portion of the first primary surface portion, a resin portion, and a recess defined by a portion of the upper surface of the lead part and the resin portion; and a light-emitting element mounted in the resin package. The curved portion is buried in the resin portion.

Abstract: A lead frame includes: a plurality of units each including a first lead portion and a second lead portion arranged in a first direction, wherein the units are arranged in the first direction and in a second direction perpendicular to the first direction, and the first lead portion and the second lead portion of each unit are adjacent, in the second direction, to the first lead portion and the second lead portion of an adjacent one of the units that is adjacent in the second direction; a plurality of first suspension portions; and a plurality of connecting portions. Each of the first suspension portions connects, in the second direction, the first lead portions of units that are adjacent to each other in the second direction.

Abstract: A lead frame includes: a plurality of units each including a first lead portion and a second lead portion arranged in a first direction, wherein the units are arranged in the first direction and in a second direction perpendicular to the first direction, and the first lead portion and the second lead portion of each unit are adjacent, in the second direction, to the first lead portion and the second lead portion of an adjacent one of the units that is adjacent in the second direction; a plurality of first suspension portions; and a plurality of connecting portions. Each of the first suspension portions connects, in the second direction, the first lead portions of units that are adjacent to each other in the second direction.

Abstract: A light-emitting device includes: a resin package including: a lead part including a first lead and a second lead, each including a main body portion and a raised portion connected to the main body portion, wherein an upper surface of each of the first lead and the second lead includes a first primary surface portion in the main body portion and a curved portion in the raised portion in a cross-sectional view taken in a direction perpendicular to an upper surface of the lead part, and wherein the curved portion is continuous with and curved upward from an end portion of the first primary surface portion, a resin portion, and a recess defined by a portion of the upper surface of the lead part and the resin portion; and a light-emitting element mounted in the resin package. The curved portion is buried in the resin portion.

Abstract: A lead frame includes: a plurality of units each including a first lead portion and a second lead portion arranged in a first direction, wherein the units are arranged in the first direction and in a second direction perpendicular to the first direction, and the first lead portion and the second lead portion of each unit are adjacent, in the second direction, to the first lead portion and the second lead portion of an adjacent one of the units that is adjacent in the second direction; a plurality of first suspension portions; and a plurality of connecting portions. Each of the first suspension portions connects, in the second direction, the first lead portions of units that are adjacent to each other in the second direction.

Abstract: A lead frame includes: a plurality of units each including a first lead portion and a second lead portion arranged in a first direction, wherein the units are arranged in the first direction and in a second direction perpendicular to the first direction, and the first lead portion and the second lead portion of each unit are adjacent, in the second direction, to the first lead portion and the second lead portion of an adjacent one of the units that is adjacent in the second direction; a plurality of first suspension portions; and a plurality of connecting portions. Each of the first suspension portions connects, in the second direction, the first lead portions of units that are adjacent to each other in the second direction.

Abstract: A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission including a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set a torque limit usable for the hydrostatic transmission based on an engine speed, to set a vehicle speed limit based on a pressure in the hydraulic circuit and the torque limit, to select a lower one of the set vehicle speed and the vehicle speed limit, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the selected vehicle speed.

Abstract: A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission including a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set a torque limit usable for the hydrostatic transmission based on an engine speed, to set a vehicle speed limit based on a pressure in the hydraulic circuit and the torque limit, to select a lower one of the set vehicle speed and the vehicle speed limit, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the selected vehicle speed.

Abstract: A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission including a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set a torque limit usable for the hydrostatic transmission based on an engine speed, to set a vehicle speed limit based on a pressure in the hydraulic circuit and the torque limit, to select a lower one of the set vehicle speed and the vehicle speed limit, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the selected vehicle speed.

Abstract: A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission with a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set an upper limit of the engine speed with respect to the set vehicle speed for limiting the upper limit of the engine speed to a predetermined partial engine speed set to be lower than a high idle engine speed when the set vehicle speed is in a preliminarily set low and intermediate speed range, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the set vehicle speed for allowing a vehicle speed to reach the set vehicle speed even when the engine is rotated at the partial engine speed.

Abstract: A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission with a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set an upper limit of the engine speed with respect to the set vehicle speed for limiting the upper limit of the engine speed to a predetermined partial engine speed set to be lower than a high idle engine speed when the set vehicle speed is in a preliminarily set low and intermediate speed range, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the set vehicle speed for allowing a vehicle speed to reach the set vehicle speed even when the engine is rotated at the partial engine speed.

Abstract: A control device controls a hydrostatic transmission vehicle having a hydrostatic transmission including a variable displacement pump and a variable displacement hydraulic motor. The control device is configured to set a set vehicle speed based on a forward/rearward travel command and a gear stage command instructed by an operator, to set a torque limit usable for the hydrostatic transmission based on an engine speed, to set a vehicle speed limit based on a pressure in the hydraulic circuit and the torque limit, to select a lower one of the set vehicle speed and the vehicle speed limit, and to control respective displacements of the variable displacement pump and the variable displacement hydraulic motor based on the selected vehicle speed.

Abstract: Disclosed herein are a method for batchwisely calcining and activating infusibilized spherical pitch beads in an upper stage and a lower stage fluidized beds formed on respective perforated plates, by calcining the pitch beads in the upper stage at 600-800.degree. C. with a heated exhaust gas from a space for the lower stage, discharging activated carbon beads of the previous batch from the space for the lower stage, stopping the fluidization of the upper stage by guiding the exhaust gas from the space for the lower stage to the space for the upper stage through a bypass line so that the calcined beads can fall down to the space for the lower stage through the holes of the perforated plate of the upper stage, and activating the falling calcined beads at 800-1200.degree. C. while forming the lower stage fluidized bed with a heated calcining and activating gas, and a furnace used for the above method.

Abstract: An improved coal fired gas turbine having an enhanced working efficiency and a relatively low manufacturing cost is disclosed, in which a coal-fired furnace, a mist separator, a gas turbine section and an air compressor are sequentially disposed. The gas turbine section and the air compressor are connected by a common shaft with a partition interposed therebetween so that direct communication of gas and air therebetween is prevented. The coal-fired furnace is constructed as a slagging combustor having a heavy thermal load. A molten slag extraction device is provided at the middle portion of the combustor. Air introducing holes communicate with an outlet of the air compressor for controlling the combustion gas. Furthermore, a mist separator for removing ash mist in the combustion gas is provided on the downstream side of the coal-fired furnace, and a combustion gas introducing section of the gas turbine is provided on the downstream side of the mist separator.

Abstract: In a coal-fired combined plant, finely powdered coal is burned at high temperature in a pressurized coal-melting combustion furnace to obtain combustion gas substantially free of dust to drive a gas turbine in order to generate electric power. Waste gas from the gas turbine is used to produce steam which drives a steam turbine for additional electric power generation. Primary dust removal from the combustion gas is carried out by removing most of the resulting coal ash in a molten state. In a secondary dust removal, the dust is removed from the combustion gas by a cyclone disposed in the combustion furnace. In a tertiary dust removal, the dust is removed from the combustion gas which is discharged through an outlet at the combustion furnace by a precision dust-removing device.

Abstract: A slag tap combustion apparatus which is characterized by comprising a slag tap combustion furnace, a slag granulation chamber for granulating a slag discharged from the slag tap combustion furnace, a slag grain accumulation tower which is filled with slag grains discharged from the slag granulation chamber, a secondary reactor provided with an inlet and an outlet for a waste gas from the slag tap combustion furnace and provided with means for introducing finely powdered lime, a duct for connecting the waste gas outlet of the secondary reactor to the slag grain accumulation tower, and another duct for allowing the waste gas to discharge from the slag accumulation tower.