摘要:
A construction machine includes a condenser 24 for cooling refrigerant for an air conditioner; a fan 21 for cooling the condenser 24 by using forward cooling air produced during normal-rotation drive; other cooled objects such as a radiator 25 and the like disposed under the lee of the forward cooling air with respect to the condenser 24; a refrigerant pressure detector 27 for detecting the pressure of the refrigerant flowing in the condenser 24; and a controller 136 for executing reverse-rotation stop processing for returning the fan 21 to the normal-rotation drive when the pressure P of the air conditioner refrigerant detected by the refrigerant pressure detector 27 reaches a preset normal-rotation return pressure P1 during reverse-rotation drive of the fan 21. Thus, the lowering of the cooling effect of an air conditioner can be suppressed while reducing the burden of cleaning an engine room.
摘要:
A split rim for pneumatic tire includes a disk part having a seat portion allowing a corresponding tire bead part to be seated at the radial outer end. First and second pieces are connected to the disk part and have cylindrical parts coaxial with the disk parts. The cylindrical part of the second piece can be inserted into the cylindrical part of the first piece. The cylindrical parts of the first and second pieces overlap with each other in the inserted state and are connected to each other by a fastening mechanism. The fastening mechanism includes a group of claws formed on the inner circumference of the first piece cylindrical part and a group of claws formed on the outer circumference of the second piece cylindrical part.
摘要:
A hollow-cylindrical portion (26) inserted in a hollow-cylindrical portion (16) of one rim section (12) is provided on the other rim section (13). To form a split rim (11), part (head portion) of the inner hollow-cylindrical portion (26) overlaid on the outer hollow-cylindrical portion (16) is radially outwardly expanded by being elastically deformed by a tapered surface (39) of a piston (38) such that the inner and outer hollow-cylindrical portions (16, 26) are in close contact with each other. As a result, relative positions of the rim sections (12, 13) are strictly defined, and this enables high assembling accuracy, particularly coaxiality with a high level, to be achieved. A fine fitted to the split rim (11) can be inspected with high accuracy.
摘要:
To provide a drive control system for a working vehicle, which can prevent engine stall with certainty even when a large load suddenly acts on a vehicle-mounted engine and which is also excellent in environment friendly performance.When a vehicle speed of a wheel loader (1) is determined to be not higher than a reference value (Yes) in step S4 and a forward/reverse command means (40) is determined to have been switchingly operated (Yes) in step S5, the routine advances to step S6 where an increment ΔN of engine speed according to an engine load factor is determined. In step S7, the increment ΔN of engine speed is then added to a target engine speed Na corresponding to a depression stroke of an accelerator pedal (38), the thus-determined Na=Na+ΔN is set as a new target engine speed Na, and a target engine speed command i1 is sent to an engine controller (37).
摘要翻译:为了提供一种用于工作车辆的驱动控制系统,其即使当大负载突然作用在车载发动机上时也能够确定地防止发动机失速,并且环境性能也优异。 当在步骤S4中将轮式装载机(1)的车速确定为不高于基准值(是)时,并且在步骤S5中确定正向/反向指令装置(40)已被切换操作(是) 例程进入步骤S6,其中确定根据发动机负载因子的发动机转速的增量ΔN。 在步骤S7中,然后将发动机转速的增量ΔN加到与加速器踏板(38)的下压行程相对应的目标发动机转速Na,将如此确定的Na = Na + DeltaN设定为新的目标发动机转速Na ,并且将目标发动机转速指令i1发送到发动机控制器(37)。
摘要:
A split rim for pneumatic tire includes a disk part having a seat portion allowing a tire corresponding bead part to be seated at the radial outer end thereof, and first and second pieces connected to the disk part and having cylindrical parts coaxial with the disk parts. The cylindrical part of the second piece can be inserted into the cylindrical part of the first piece, and the cylindrical parts of the first and second pieces overlapped with each other in the inserted state are connected to each other at an overlapped region through a connection means.
摘要:
A keyboard system for an electronic musical instrument includes: a keyboard having a number of keys; a keyboard central processing unit (CPU) coupled to the keyboard; a switch connected to each key on the keyboard; a pull-up resistor serially connected to each switch; a unit for applying voltage to a serial circuit of each switch and each pull-up resistor; and a unit for parallel supplying a signal at an intersection point between each switch and each pull-up resistor to the CPU. The operation states of a plurality of keys can be independently detected by sequentially detecting the potential at the interconnection points.
摘要:
A construction machine includes a condenser 24 for cooling refrigerant for an air conditioner; a fan 21 for cooling the condenser 24 by using forward cooling air produced during normal-rotation drive; other cooled objects such as a radiator 25 and the like disposed under the lee of the forward cooling air with respect to the condenser 24; a refrigerant pressure detector 27 for detecting the pressure of the refrigerant flowing in the condenser 24; and a controller 136 for executing reverse-rotation stop processing for returning the fan 21 to the normal-rotation drive when the pressure P of the air conditioner refrigerant detected by the refrigerant pressure detector 27 reaches a preset normal-rotation return pressure P1 during reverse-rotation drive of the fan 21. Thus, the lowering of the cooling effect of an air conditioner can be suppressed while reducing the burden of cleaning an engine room.
摘要:
When a vehicle speed of a wheel loader (1) is determined to be not higher than a reference value (Yes) in step S4 and a forward/reverse command switch (40) is determined to have been switchingly operated (Yes) in step S5, the routine advances to step S6 where an increment ΔN of engine speed according to an engine load factor is determined. In step S7, the increment ΔN of engine speed is then added to a target engine speed Na corresponding to a depression stroke of an accelerator pedal (38), the thus-determined Na=Na+ΔN is set as a new target engine speed Na, and a target engine speed command i1 is sent to an engine controller (37).
摘要翻译:当在步骤S4中将轮式装载机(1)的车速确定为不高于参考值(是)时,并且在步骤S5中确定正向/反向命令开关(40)已被切换操作(是) 例程进入步骤S6,其中确定根据发动机负载因子的发动机转速的增量&Dgr; N。 然后,在步骤S7中,将发动机转速的增量&Dgr; N加到与加速器踏板(38)的下压行程相对应的目标发动机转速Na,将这样确定的Na = Na +&Dgr; N设定为新的 目标发动机转速Na,目标发动机转速指令i1被发送到发动机控制器37。
摘要:
A hollow-cylindrical portion (26) inserted in a hollow-cylindrical portion (16) of one rim section (12) is provided on the other rim section (13). To form a split rim (11), part (head portion) of the inner hollow-cylindrical portion (26) overlaid on the outer hollow-cylindrical portion (16) is radially outwardly expanded by being elastically deformed by a tapered surface (39) of a piston (38) such that the inner and outer hollow-cylindrical portions (16, 26) are in close contact with each other. As a result, relative positions of the rim sections (12, 13) are strictly defined, and this enables high assembling accuracy, particularly coaxiality with a high level, to be achieved. A fine fitted to the split rim (11) can be inspected with high accuracy.