大吨位全地面起重机泵控液压的介绍（Introduction of pump hydraulic control for large tonnage all terrain crane）.docVIP

下载本文档

1
0
约8.24千字
约 6页
2017-07-24 发布于河南
举报
版权申诉

大吨位全地面起重机泵控液压的介绍（Introduction of pump hydraulic control for large tonnage all terrain crane）.doc

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

大吨位全地面起重机泵控液压的介绍（Introduction of pump hydraulic control for large tonnage all terrain crane）

大吨位全地面起重机泵控液压的介绍（Introduction of pump hydraulic control for large tonnage all terrain crane） Introduction of pump hydraulic control for large tonnage all terrain crane 2011-07-21 09:31, a??? Crane prior hydraulic system is controlled by the valve, opening size of control valve to control the flow of the hydraulic system, which controls the speed of movement mechanism the size of execution. The energy loss of the structure is large, and the heat generation of the system is high. I. Introduction the existing hydraulic system of crane is mostly valve control, that is to control the flow of hydraulic system by controlling the opening amount of hydraulic manifold valve, and thus control the speed of movement of actuator. The energy loss of the structure is large, and the heat generation of the system is high. This system uses the pump controlled hydraulic system, and ensure the coordination of engine and hydraulic system, effective use of the power of the engine, to avoid unnecessary energy consumption, saves energy and realizes the stepless regulation of the working mechanism. The micro system is excellent, the hydraulic system impact is greatly reduced, is conducive to the protection of the hydraulic system and the hydraulic components of the hydraulic components, the service life is prolonged, greatly improve the crane operation safety, reliability and efficiency. This system uses the electric control way, has realized the machine, the electricity, the fluid integration and the crane operation intellectualization truly. The system realizes the telescopic single cylinder bolt function with the expansion mechanism and the electrical system. Two, overview This system realizes the change of the movement speed of the actuator by controlling the displacement of the pump by the electro-hydraulic proportional pilot. The system is composed of closed circuit rotary circuit, main circuit of open circuit and auxiliary oil circuit. The rotary circuit adopts closed loop composed of