摘要:
A construction vehicle includes an engine, a hydraulic pump configured to be driven by the engine, a traveling hydraulic motor configured to be driven by pressured oil discharged by the hydraulic pump, a traveling wheel configured to be driven by driving force of the traveling hydraulic motor, and a control unit configured to control a vehicle velocity and a traction force by controlling rotation speed of the engine, capacity of the hydraulic pump, and capacity of the traveling hydraulic motor. In addition, the control unit is further configured to perform slip reduction control for reducing the maximum rotation speed of the engine as the vehicle velocity becomes slow in a low-velocity range in which the vehicle velocity is less than or equal to a predetermined velocity.
摘要:
The invention provides a working unit control apparatus of an excavating and loading machine which can always judge a start of an excavation control at a proper timing. The working unit control apparatus has excavating state detecting means (43, 44) detecting an excavating state of a vehicle, and a controller (25) has a load judging portion (48) judging on the basis of a detecting amount, and automatic excavation control means (51) setting and outputting an automatic excavation command value to each of control valves on the basis of the judgement of said load judging portion, and an automatic excavation control is started when a boom lever is operated and it is judged that a vehicle is under excavation.
摘要:
The invention provides a working unit control apparatus of an excavating and loading machine which can always judge a start of an excavation control at a proper timing. The working unit control apparatus has excavating state detecting means (43, 44) detecting an excavating state of a vehicle, and a controller (25) has a load judging portion (48) judging on the basis of a detecting amount, and automatic excavation control means (51) setting and outputting an automatic excavation command value to each of control valves on the basis of the judgement of said load judging portion, and an automatic excavation control is started when a boom lever is operated and it is judged that a vehicle is under excavation.
摘要:
A magnetostatic wave device includes a Gd3Ga5O12 substrate off-angled from a {110} plane. A magnetic thin film including a crystal of garnet is formed on the Gd3Ga5O12 substrate by liquid-phase epitaxy. A transducer operates for exciting magnetostatic wave in the magnetic thin film in response to an RF electric signal. A bias magnetic field is applied to the magnetic thin film. There is a relation as 20°≦|&thgr;1+&thgr;2|≦35°, where “&thgr;1” denotes an angle between a longitudinal direction of the transducer and a orientation of the crystal in the magnetic thin film, and “&thgr;2” denotes an angle between a transverse direction of the transducer and a specified direction. The specified direction is parallel to a line of intersection between a horizontal plane of the magnetic thin film and a given plane which is perpendicular to the horizontal plane of the magnetic thin film and which contains a direction of the bias magnetic field. Also, there is a relation as |&thgr;3|≦75°, where “&thgr;3” denotes an angle between the specified direction and the direction of the bias magnetic field.
摘要翻译:静磁波装置包括从{110}平面偏斜的Gd 3 Ga 5 O 12衬底。 通过液相外延在Gd3Ga5O12基板上形成包含石榴石晶体的磁性薄膜。 传感器用于响应于RF电信号激励磁薄膜中的静磁波。 向磁性薄膜施加偏置磁场。 存在20°<= |θ1+θ2| <= 35°的关系,其中“theta1”表示换能器的纵向方向与磁性薄膜中的晶体的<001>取向之间的角度, θ2“表示换能器的横向与指定方向之间的角度。 指定的方向平行于磁性薄膜的水平面与垂直于磁性薄膜的水平面并且包含偏置磁场的方向的给定平面之间的交线。 另外,作为|θ3 | <= 75°存在关系,其中“θ3”表示指定方向与偏置磁场方向之间的角度。
摘要:
A hydraulic steering apparatus having a small angle of operation, can be minutely and smoothly controlled and requires a small number of operation times. The hydraulic steering apparatus is mounted onto an automatic traveling vehicle and has a pilot valve which is switched from a neutral position to a steering position upon receiving a target steering angle from a target steering angle input means. A main steering valve is switched from a neutral position to a steering position upon receiving pressurized oil from the pilot valve and outputs pressurized oil to multiple hydraulic actuators in order to produce an actual steering angle. An excitation current output means outputs an excitation current corresponding to a deviation angle between the target and actual steering angles to an electromagnetic variable pressure reducing valve.
摘要:
A magnetostatic wave device includes a Gd.sub.3 Ga.sub.5 O.sub.12 substrate off-angled from a {110} plane. A magnetic thin film including a crystal of garnet is formed on the Gd.sub.3 Ga.sub.5 O.sub.12 substrate by liquid-phase epitaxy. A transducer is operative for exciting magnetostatic wave in the magnetic thin film in response to an RF electric signal. A bias magnetic field is applied to the magnetic thin film. There is a relation as 20.degree..ltoreq..vertline..theta..sub.1 +.theta..sub.2 .vertline..ltoreq.35.degree., where ".theta..sub.1 " denotes an angle between a longitudinal direction of the transducer and a orientation of the crystal in the magnetic thin film, and ".theta..sub.2 " denotes an angle between a direction of the bias magnetic field and a transverse direction of the transducer which is perpendicular to the longitudinal direction thereof.
摘要翻译:静磁波装置包括从{110}平面偏斜的Gd 3 Ga 5 O 12衬底。 通过液相外延在Gd3Ga5O12基板上形成包含石榴石晶体的磁性薄膜。 传感器用于响应于RF电信号激励磁薄膜中的静磁波。 向磁性薄膜施加偏置磁场。 有一个关系为20° = | θ1θθ2 | 35°,其中“θ1”表示换能器的纵向方向与磁性薄膜中的晶体的<001>取向之间的角度,“θ2” 在偏置磁场的方向和与其纵向方向垂直的换能器的横向之间。
摘要:
A reflection-type S/N enhancer includes a Gd.sub.3 Ga.sub.5 O.sub.12 substrate off-angled from a {110} plane. A magnetic thin film including a crystal of garnet is formed on the Gd.sub.3 Ga.sub.5 O.sub.12 substrate by liquid-phase epitaxy. The magnetic thin film has a saturation magnetization in a range of 500 G to 1,100 G. A transducer is operative for exciting magnetostatic wave in the magnetic thin film in response to an RF electric signal. A bias magnetic field is applied to the magnetic thin film. There is a relation as .vertline..theta..sub.1 +.theta..sub.2 .vertline. orientation of the crystal in the magnetic thin film, and ".theta..sub.2 " denotes an angle between a direction of the bias magnetic field and a transverse direction of the transducer in a horizontal plane. The transverse direction of the transducer is perpendicular to the longitudinal direction thereof.
摘要翻译:反射型S / N增强器包括从{110}平面偏斜的Gd 3 Ga 5 O 12衬底。 通过液相外延在Gd3Ga5O12基板上形成包含石榴石晶体的磁性薄膜。 磁性薄膜的饱和磁化强度在500G至1100G的范围内。传感器用于响应于RF电信号激励磁性薄膜中的静磁波。 向磁性薄膜施加偏置磁场。 有一个关系为| θ1θθ2 | <45°,其中“θ1”表示换能器的纵向方向与磁性薄膜中的晶体的<001>取向之间的角度,“θ2”表示 偏置磁场的方向和换能器的横向在水平面内。 换能器的横向垂直于其纵向方向。
摘要:
A loading/unloading vehicle having booms and a bucket carried thereon such as a shovel loader, a wheel loader or the like vehicle detects that a true bucket-to-ground angle coincides with a preset angle after the vehicle starts automatic turning movement of the bucket. When the coincidence is detected, the automatic turning movement of the bucket is interrupted. Thereafter, a differential value between the true bucket-to-ground angle and the preset angle is determined, if any and then the bucket angle is corrected so as to allow the differential value to be reduced to zero. Consequently, the bucket is held at the preset angle after the bucket stops, even though the booms continue to be turned.
摘要:
A storage section stores inching characteristic information. The inching characteristic information defines a relationship between an inching operation quantity and an inching characteristic value. The inching characteristic value is a value dependent on pilot pressure that is reduced through inching control. A computing section references the inching characteristic information to thereby compute, from the inching operation quantity detected by the inching operation quantity detector, a command value to the pilot pressure control valve. In the inching characteristic information, a rate of lowering the inching characteristic value when the inching operation quantity is within a first range is greater than a rate of lowering the inching characteristic value when the inching operation quantity is within a second range greater than the first range.
摘要:
A storage section stores inching characteristic information. The inching characteristic information defines a relationship between an inching operation quantity and an inching characteristic value. The inching characteristic value is a value dependent on pilot pressure that is reduced through inching control. A computing section references the inching characteristic information to thereby compute, from the inching operation quantity detected by the inching operation quantity detector, a command value to the pilot pressure control valve. In the inching characteristic information, a rate of lowering the inching characteristic value when the inching operation quantity is within a first range is greater than a rate of lowering the inching characteristic value when the inching operation quantity is within a second range greater than the first range.