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1. 发明授权

US5620053A Blade apparatus and its control method in bulldozer 失效
标题翻译：铲土机及其在推土机中的控制方法
公开(公告)号：US5620053A
公开(公告)日：1997-04-15
申请号：US378839
申请日：1995-01-26
申请人： Nobuhisa Kamikawa , Toshikazu Okada , Hidekazu Nagase , Naomi Kobayashi , Hiroshi Itogawa , Noriaki Namiki , Norihisa Matsumoto , Shigeru Yamamoto
发明人： Nobuhisa Kamikawa , Toshikazu Okada , Hidekazu Nagase , Naomi Kobayashi , Hiroshi Itogawa , Noriaki Namiki , Norihisa Matsumoto , Shigeru Yamamoto
IPC分类号： E02F3/84 , E02F3/85 , E02F9/20 , E02F9/22 , E02F3/76
CPC分类号： E02F9/2292 , E02F3/7618 , E02F3/844 , E02F9/2004 , E02F9/2296
摘要： A hydraulic drive system for the pitch cylinders (4A, 4B) of a bulldozer blade apparatus can include (a) main hydraulic pumps (30A, 30B) and an assistant hydraulic pump (31) to make up the assistant hydraulic circuit, (b) variable displacement hydraulic pumps (21A, 21B), or (c) fixed displacement hydraulic pumps (30A, 30B) and a plurality of solenoid selector valves such that the pitch cylinders can be connected in series. The assistant hydraulic pump (31) is connectable to delivery lines of the main hydraulic pumps through an assistant solenoid selector valve (32) which is controlled by an external signal. The blade (10) can be formed so that a line (14) tangential to the lower edge of the curved panel of the blade is inclined rearwardly with respect to the front face (13) of the blade edge member (12). Earth-moving work can be performed by inclining the blade (10) rearwardly by an angle (.theta..sub.1) with respect to its posture in digging work, and earth-dumping work can be performed by inclining the blade (10) forwardly by an angle (.theta..sub.2) with respect to its posture in digging work. The coupling positions of the two pitch cylinders (4A, 4B) can be in asymmetrical relation to each other. Control signals can be provided by a blade lever (23), tilt/pitch changeover switch (24), and pitch speed changeover switch (25). The tilt/pitch changeover switch (24) and pitch speed changeover switch (25) can be replaced by pitch-dump selector switch (25A) and pitch-back selector switch (24A).
摘要翻译：用于推土机叶片装置的变桨缸（4A，4B）的液压驱动系统可以包括：（a）主液压泵（30A，30B）和辅助液压泵（31），以组成辅助液压回路;（b）可变排量液压泵（21A，21B）或（c）固定排量液压泵（30A，30B）和多个电磁选择阀，使得变桨缸可以串联连接。辅助液压泵（31）可通过由外部信号控制的辅助电磁换向阀（32）连接到主液压泵的输送管线。叶片（10）可以形成为使得与叶片的弯曲面板的下边缘相切的线（14）相对于叶片边缘构件（12）的前表面（13）向后倾斜。地面移动作业可以通过在挖掘作业中将叶片（10）相对于其姿势向后倾斜角度（θ1）来执行，并且可以通过将叶片（10）向前倾斜角度（θ2）相对于其在挖掘工作中的姿势。两个变桨缸（4A，4B）的联接位置可以彼此不对称。控制信号可由叶片杆（23），倾斜/俯仰切换开关（24）和俯仰速度转换开关（25）提供。俯仰/俯仰切换开关（24）和俯仰速度切换开关（25）可以由倾倒切换选择开关（25A）和俯仰式选择开关（24A）代替。

2. 发明授权

US5950141A Dozing system for bulldozer 失效
标题翻译：推土机打夯系统
公开(公告)号：US5950141A
公开(公告)日：1999-09-07
申请号：US796263
申请日：1997-02-06
申请人： Shigeru Yamamoto , Hidekazu Nagase , Hiroshi Itogawa , Nobuhisa Kamikawa
发明人： Shigeru Yamamoto , Hidekazu Nagase , Hiroshi Itogawa , Nobuhisa Kamikawa
IPC分类号： E02F3/84 , E02F9/20 , E02F9/22 , G01M17/00
CPC分类号： E02F3/845 , E02F9/2029 , E02F9/2292
摘要： During dozing operation, the amount of earth (i.e., load factor) accumulated on the front face of a blade is automatically detected independently of the operator's perception and, based on the detection, the dozing operation is automatically shifted from digging to carrying. The load factor is calculated by obtaining a horizontal reaction force and a vertical reaction force exerted on the blade during digging and by calculating the ratio of the vertical reaction force to the horizontal reaction force. When the load factor reaches a specified value, the blade is automatically controlled to incline backward to hold the earth.
摘要翻译：在打瞌睡操作期间，独立于操作者的感知自动检测累积在叶片前面的地球量（即，负荷因子），并且基于检测，打瞌睡操作被自动地从挖掘转移到携带。通过在挖掘期间获得施加在叶片上的水平反作用力和垂直反作用力以及通过计算垂直反作用力与水平反作用力的比来计算载荷系数。当负载系数达到规定值时，刀片自动控制向后倾斜以保持地球。

3. 发明授权

US5558590A Geared steering device for crawler vehicle and control unit therefor 失效
标题翻译：用于履带车辆的减速转向装置及其控制单元
公开(公告)号：US5558590A
公开(公告)日：1996-09-24
申请号：US188440
申请日：1994-01-28
申请人： Toshikazu Okada , Hiroshi Itogawa , Hidekazu Nagase
发明人： Toshikazu Okada , Hiroshi Itogawa , Hidekazu Nagase
IPC分类号： B62D11/08 , B62D11/18
CPC分类号： B62D11/08 , B62D11/183 , Y10T477/10 , Y10T477/606
摘要： A geared steering device (30) selectively operates rightside and leftside driving mechanisms (2,3) of a crawler vehicle (1) for more efficient operation of the crawler vehicle. The geared steering device (30) comprises a power input drive element (33) for inputting a driving power from a prime mover (7), rightside and leftside steering brakes (38R, 38L), rightside and leftside direct-coupled clutches (36, 44), a turn clutch (46), three arrays of planet gear trains (40, 43 and 48), and power output shafts (32R, 32L) coupled to right and leftside steering brake hubs (34R, 34L). A control unit compares an actual steering ratio of a geared steering device (30) with a designated steering ratio, outputs control signals to respective solenoid valves for controlling the direct-coupled clutches, the turn clutch or a steering brake so as to cause the actual steering ratio to approximate the designated steering ratio. The control unit outputs an engagement signal to the one of the direct-coupled clutches (36 and 44) on the side opposite to a steering direction entered by the steering lever (57).
摘要翻译：齿轮转向装置（30）选择性地操作履带车辆（1）的右侧和左侧驱动机构（2,3），以更有效地操作履带车辆。齿轮转向装置（30）包括用于从原动机（7），右侧和左侧转向制动器（38R，38L）输入驱动力的动力输入驱动元件（33），右侧和左侧直接离合器（36， 44），转动离合器（46），行星齿轮系（40,43和48）的三个阵列以及联接到右侧和右侧转向制动轮毂（34R，34L）的动力输出轴（32R，32L）。控制单元将齿轮转向装置（30）的实际转向比与指定的转向比进行比较，将控制信号输出到用于控制直接离合器，转向离合器或转向制动器的各个电磁阀，以使实际转向比接近指定转向比。所述控制单元在与所述转向杆（57）输入的转向方向相反的一侧向所述直接离合器（36和44）中的一个输出接合信号。

4. 发明授权

US5520259A Supporting structure for an operator cabin on construction equipment 失效
标题翻译：施工设备操作员舱的支撑结构
公开(公告)号：US5520259A
公开(公告)日：1996-05-28
申请号：US197694
申请日：1994-02-17
申请人： Kazuyuki Onohara , Hiroshi Itogawa , Koji Okazawa
发明人： Kazuyuki Onohara , Hiroshi Itogawa , Koji Okazawa
IPC分类号： B62D49/00 , B62D33/06 , E02F9/16 , B62D33/10
CPC分类号： B62D33/0608
摘要： An operator cabin on construction equipment is provided with a supporting structure which improves the riding quality by absorbing and damping vibrations and large impacts transmitted to the operator cabin. The right and left side portions of a front portion of the operator cabin (1) are secured to a frame (3) of the body of the construction equipment through damper plate shock absorbers (10R, 10L) or rotatable mounts (30R, 30L), while the right and left side portions of a rear portion of the operator cabin (1) are secured to the frame (3) through spring biased hydraulic shock absorbers (20L, 20R). Each of the shock absorbers has a vibration damping function. In particular, the stroke of the spring biased hydraulic shock absorber is large enough to absorb a large impact energy. This makes it possible to absorb vibration of small amplitude. For a strong shock, the impact energy can be absorbed by oscillating the operator cabin (1) about a pivot axis through the front mounts, allowing damping of the vibration. Lateral oscillation can be minimized by a four-bar parallel linkage which includes upper and lower lateral bars (40a, 40b), one cabin side (1R), and a vertical bracket (4R) positioned adjacent to that cabin side (1R).
摘要翻译：施工设备上的操作员舱设置有支撑结构，其通过吸收和阻尼传递到操作员舱的振动和大的冲击来提高乘坐质量。操作员舱（1）前部的右侧和左侧部分通过阻尼板减震器（10R，10L）或可旋转安装件（30R，30L）固定在施工设备主体的框架（3）上，而操作员舱（1）的后部的右侧部分和左侧部分通过弹簧偏压的液压减震器（20L，20R）固定到框架（3）上。每个减震器都具有减振功能。特别地，弹簧偏压液压减震器的行程足够大以吸收大的冲击能量。这使得可以吸收小振幅的振动。对于强烈的冲击，冲击能量可以通过使操作员舱（1）围绕枢转轴线摆动通过前部安装件而被吸收，从而阻尼振动。横向振动可以通过四杆平行连杆最小化，该四杆平行连杆包括上和下侧杆（40a，40b），一个舱侧（1R）和与该舱侧相邻的垂直托架（4R）。

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