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公开(公告)号：US4653655A
公开(公告)日：1987-03-31
申请号：US812336
申请日：1985-12-23
申请人： Ram N. Rathi , Lembit Vaerk
发明人： Ram N. Rathi , Lembit Vaerk
CPC分类号： B66C23/702
摘要： A mobile crane having a boom and a boom extension connected thereto with a toggle linkage for connecting the boom extension to the boom to allow the boom extension to be offset from the boom by one of a plurality of predetermined angles. A pair of double links is pivotably attached to the boom extension while a pair of single links is pivotably attached to the upper sheave pin in the boom head. Both the single and double links have a hole in the opposite end. Either the single or double links also have a hole in at least one intermediate position. The link having one hole is then pinned to the other link having two holes, the hole selected in the second link determining the angles of offset when tension is applied to the linkage by pivoting the boom extension about the lower sheave pin after removal of the upper boom foot pins. Biasing devices are provided to cause the linkage, which pivots freely at both ends and in the middle, to toggle upward when tension thereon is released. A storage position is provided for storing the double links and the link connector pins so as to prevent interference with the other apparatus and loss of the connector pins when the linkage is not in use.
摘要翻译： 一种具有悬臂和悬臂延伸部的移动式起重机，所述起重臂延伸部具有肘节连接件，用于将所述起重臂延伸部连接到所述起重臂，以允许所述起重臂延伸部通过多个预定角度中的一个偏离所述起重臂。 一对双连杆可枢转地连接到悬臂延伸部，而一对单连杆可枢转地连接到悬臂头部中的上滑轮销。 单链和双链都有相反的一个孔。 单个或双向链节中的至少一个中间位置也具有孔。 具有一个孔的连杆然后被固定到具有两个孔的另一个连杆上，在第二连杆中选择的孔通过在移除上部上部之后枢转吊臂延伸部围绕下滑轮销钉枢转来确定张力时施加的作用力来确定偏移角度 吊臂脚针。 设置有偏压装置，以使得在其两端和中间自由枢转的连杆在张力被释放时向上转动。 提供存储位置用于存储双连杆和连杆连接器销，以防止在不使用连杆时与其他装置的干扰和连接器销的损失。
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公开(公告)号：US4318488A
公开(公告)日：1982-03-09
申请号：US172955
申请日：1980-07-28
申请人： Ram N. Rathi
发明人： Ram N. Rathi
CPC分类号： B66C23/702
摘要： Method for extending a jib of a telescopic crane which jib may be stored alongside a base section when not in use. The crane boom comprises at least the base section, a second section with linearly extendable power means, an extension pivotably mounted on the outer end of the second section and stored alongside that section and the base section, and a jib releasably attached to both the base section while in storage and to the extension while in use. To set up the crane for operation, the power means extends the second section forward from the base section, which extends in a forward direction the extension pivotally attached to the second section. This extension places the outer end of the extension in vertical alignment with the inner end of the jib. The extension and jib are then connected along their lengths and the jib is released from its storage position on the base. The inner end of the extension is pivoted around the outer end of the second section and the inner end of the jib is pivoted around the outer end of the extension. Both the extensions and the jib are fixed in an operative position. If the jib is not required, it is left in its attached position on the base, and the base section, second section, and boom extension may be operated independently.
摘要翻译： 用于延伸伸缩式起重机的起重臂的方法，该起重臂在不使用时可以与基部一起存储。 起重机吊臂至少包括基部，具有可线性延伸的动力装置的第二部分，可枢转地安装在第二部分的外端上并与该部分和基部一起存储的延伸部分，以及可释放地附接到基部 在使用时在存储和扩展中。 为了设置起重机进行操作，动力装置将第二部分从基部向前延伸，该基部沿向前方向延伸，枢转地附接到第二部分。 该延伸部将延伸部的外端与起重臂的内端垂直对准。 然后将延伸臂和悬臂沿着它们的长度连接，并且将起重臂从底座上的储存位置释放。 延伸部的内端围绕第二部分的外端枢转，并且起重臂的内端围绕延伸部的外端枢转。 延伸部和副臂都固定在操作位置。 如果不需要起重臂，则将其保持在基座的附接位置，并且可以独立地操作基部，第二部分和悬臂延伸部。
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公开(公告)号：US4344497A
公开(公告)日：1982-08-17
申请号：US086661
申请日：1979-10-19
申请人： Ram N. Rathi , Ronald E. Nelson
发明人： Ram N. Rathi , Ronald E. Nelson
IPC分类号： B60G17/005 , B66C23/78 , B60G17/00 , B66C13/12 , B66C23/04
CPC分类号： B66C23/78 , B60G17/005
摘要： A pair of hydraulic locking cylinders for a vertically oscillatable wheel axle on the carrier frame of a mobile crane are interconnected and controlled by a hydraulic double-locking valve which is responsive to the centered or off-centered rotary position of the boom-carrying rotatable upper section of the crane. The double-locking valve comprises a pair of normally closed ball-type check valves which are operated by a valve stem comprising independently movable upper and lower sections. The upper valve stem section is positioned by a cam on the crane upper section and the lower valve stem section is positioned by a pneumatic actuator which is controlled by a solenoid valve selectively actuatable by an electric override switch in the crane operator's cab. The upper valve stem is moved to down (valve open-axle unlocked) position by the cam when the crane upper is centered on the carrier frame. The upper valve stem moves to up (valve closed-axle locked) position when the crane upper is rotated off-center. The lower valve stem is selectively movable to up (valve open-axle unlocked) position from its lower (valve closed-axle locked) position by the pneumatic actuator to unlock the axle and allow the crane to be repositioned by the crane operator even while the crane upper section and its boom are off-center.
摘要翻译： 用于可移动式起重机的承载架上的用于垂直振荡的轮轴的一对液压锁定缸通过液压双重锁定相互连接并控制，液压双重锁定阀响应于悬臂承载的可旋转上部的中心或偏心的旋转位置 起重机部分。 双锁定阀包括一对常闭球形止回阀，其由包括独立可移动的上部和下部的阀杆操作。 上阀杆部分由起重机上部分上的凸轮定位，下阀杆部分由气动致动器定位，气动致动器由可由起重机驾驶室中的电动开关选择性地启动的电磁阀控制。 当起重机上部位于承载架上时，上部阀杆通过凸轮向下移动（阀开启轴锁定）位置。 当起重机上部偏离中心时，上阀杆向上移动（阀门闭锁）位置。 下阀杆可选择性地通过气动致动器从其下（阀闭轴锁定）位置向上（阀开松开锁）位置解锁，并允许起重机由起重机操作者重新定位，即使在 起重机上部和其起重臂偏离中心。
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公开(公告)号：US4621742A
公开(公告)日：1986-11-11
申请号：US694944
申请日：1985-01-25
申请人： Ram N. Rathi
发明人： Ram N. Rathi
CPC分类号： B66C23/702 , Y10T292/102
摘要： A mobile crane comprises a multi-section telescopic main boom and a boom extension pivotally connected to the point end of the main boom. The boom extension can be manually swung horizontally between an in-use position extending axially from the point end of the main boom and a stored position parallel to and alongside the main boom. Front and rear boom extension storage mechanisms releasably secure the boom extension in stored position. The front mechanism comprises two vertically spaced-apart storage pins which are slidable in tubular pin guides mounted on one lateral side of the main boom. The storage pins are slidably movable fore and aft by a swingable lever to which they are pivotally connected. The storage pins move into and out of engagement with a pair of vertically spaced-apart aligned pin-engaging holes in a member attached to a confronting side of the boom extension when the latter is in stored position. The lever is not only pivotable but is axially shiftable into and out of latched position and is biased into latched position to prevent unlatching due to "bounce". The rear storage mechanism comprises a ramp on the side of the main boom which engages and supports a roller on a member attached to a confronting side of the boom extension and a removable pin secures the member to the ramp.
摘要翻译： 一种移动式起重机包括多段伸缩主臂和枢轴连接到主起重臂的端部的起重臂延伸部。 吊杆延伸部可以在从主起重臂的端部轴向延伸的使用中的位置和与主起重臂平行并与其并排的存储位置之间水平地手动摆动。 前臂和后悬臂延伸存储机构将悬臂延伸部可释放地固定在存储位置。 前机构包括两个垂直间隔开的存储销，其可安装在主起重臂的一个侧面上的管状销引导件中滑动。 存储销可以通过可枢转地连接的可摆动的杠杆可前后滑动。 存储销在与悬臂延伸部的相对侧相连的构件中与一对垂直间隔开的对齐的销接合孔进入和离开接合，当其处于存储位置时。 杠杆不仅是可枢转的，而且可以轴向移动进入和离开锁定位置，并被偏置到锁定位置，以防止由于“反弹”而导致的非锁定。 后部存储机构包括在主悬臂侧面上的斜面，其接合并支撑附接到悬臂延伸部的相对侧的构件上的辊，并且可拆卸的销将构件固定到斜坡。
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公开(公告)号：US4079807A
公开(公告)日：1978-03-21
申请号：US686058
申请日：1976-05-13
申请人： John T. Hornagold , Gary H. Beckley , Ram N. Rathi
发明人： John T. Hornagold , Gary H. Beckley , Ram N. Rathi
CPC分类号： B60B35/003 , B60B35/109 , B62D21/14 , B62D49/0678 , B62D7/14 , B60Y2200/41
摘要： A steering mechanism particularly suited for vehicles of the type having a variable width track. The steering mechanism is flexible enabling it to automatically extend and retract laterally along with the track of the wheels of the vehicle. The mechanism acts on steering arms of the steerable wheels of a vehicle to simulate a conventional tie rod type of steering geometry. During turning, the inner wheel turns more than the outer wheel to minimize tire slippage or scrub. A flexible steering linkage assembly is connected between the steering arm ends of the pair of steerable wheels to maintain controlled spatial relationship between them which results in a simulation of tie rod steering geometry.
摘要翻译： 一种特别适用于具有可变宽度轨道类型的车辆的转向机构。 转向机构是灵活的，使其能够与车辆的车轮的轨道一起自动地横向和横向地缩回。 该机构作用于车辆的可转向轮的转向臂以模拟传统的拉杆式转向几何形状。 在转动期间，内轮转过多于外轮，以尽量减少轮胎滑动或磨擦。 柔性转向连杆组件连接在一对可转向轮的转向臂端之间，以保持它们之间的受控空间关系，这导致拉杆转向几何形状的模拟。
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公开(公告)号：USD251062S
公开(公告)日：1979-02-13
申请号：US868879
申请日：1978-01-12
申请人： Raymond J. Wacht , Ram N. Rathi , David B. Gamble
设计人： Raymond J. Wacht , Ram N. Rathi , David B. Gamble
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公开(公告)号：US4109747A
公开(公告)日：1978-08-29
申请号：US789640
申请日：1977-04-21
申请人： John T. Hornagold , Gary H. Beckley , Ram N. Rathi
发明人： John T. Hornagold , Gary H. Beckley , Ram N. Rathi
CPC分类号： B60B35/003 , B60B35/109 , B62D49/0678 , B62D7/14 , B60Y2200/41
摘要： A steering mechanism particularly suited for vehicles of the type having a variable width track. The steering mechanism is flexible enabling it to automatically extend and retract laterally along with the track of the wheels of the vehicle. The mechanism acts on steering arms of the steerable wheels of a vehicle to simulate a conventional tie rod type of steering geometry. During turning, the inner wheel turns more than the outer wheel to minimize tire slippage or scrub. A flexible steering linkage assembly is connected between the steering arm ends of the pair of steerable wheels to maintain controlled spatial relationship between them which results in a simulation of tie rod steering geometry.
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