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公开(公告)号:US4069884A
公开(公告)日:1978-01-24
申请号:US685689
申请日:1976-05-12
CPC分类号: E02F9/02 , B62D55/062 , B62D55/084 , B66C23/36 , B66C23/62
摘要: A self-propelled drive mechanism for a crawler crane or the like including a variable displacement pump and one fixed and one variable displacement motor for each crawler assembly. The displacement of the variable displacement motor may be regulated to alter the combined driving torque and speed imparted by the motors to the crawler assemblies and includes automatic self-balancing feedback means for maintaining the hydraulic pressure within predetermined limits.
摘要翻译: 一种用于履带式起重机等的自推进驱动机构,包括可变排量泵和用于每个履带组件的一个固定和一个可变排量马达。 可调节可变排量马达的位移以改变由马达施加到履带组件的组合的驱动扭矩和速度,并且包括用于将液压保持在预定限度内的自动自平衡反馈装置。
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公开(公告)号:US4000784A
公开(公告)日:1977-01-04
申请号:US571303
申请日:1975-04-24
IPC分类号: B60K17/10 , B62D55/06 , B62D55/084 , B66C23/26 , B66C23/36 , B66C23/62 , E02F9/02 , B62D55/00
CPC分类号: B62D55/084 , B62D55/062 , B66C23/36 , B66C23/62 , E02F9/02
摘要: A load handling crane is disclosed having a demountable self-propelled transport assembly including a central car body portion and detachable transverse beams, side beams, crawler assemblies and power source. Hydraulic jacks and push cylinders are mounted on the beams to facilitate detaching the components of the assembly. The power source includes an internal combustion engine and a pair of hydraulic pumps.
摘要翻译: 公开了一种负载处理起重机,其具有包括中央车身部分和可拆卸横梁,侧梁,履带组件和动力源的可拆卸自走式运输组件。 液压千斤顶和推压缸安装在梁上,以便拆卸组件的部件。 电源包括内燃机和一对液压泵。
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