The utility model relates to a lifting device, in particular to a large-span prestressed main beam gantry crane, which comprises a prestressed main beam, an end beam, an anti rust and anti flying anchor sleeve, a cross frame, a lifting trolley, a support leg, a lower cross beam and a crane running mechanism. The prestressed main beam is installed on the support leg, and the ends of the two main beams are connected by the end beam, and a cross frame is arranged above the main beam to prevent side bending , the anti rust and anti flying anchor sleeve is installed on the end face of the prestressed main beam, the lower beam is installed on the bottom end of the leg, the crane running mechanism is installed on the lower beam to make the crane move longitudinally, and the lifting trolley is installed on the transverse track on the main beam to complete the lifting operation. The main beam is composed of rectangular beam and prestressed arch frame, which is assembled in sections, convenient for transportation and assembly, simple and economic in structure. The utility model adopts the prestressed main beam, makes full use of the tensile strength of the high-strength steel strand, makes up the technical blank of the large tonnage prestressed steel structure, has the advantages of light self weight and low cost, and can meet the market demand of the large-span gantry crane of the station yard wharf.
【技术实现步骤摘要】
一种大跨度预应力主梁门式起重机
本技术涉及一种起重装置,尤其是指一种大跨度预应力主梁门式起重机。
技术介绍
CN201610718338.X号专利文献公开了一种门式起重机主梁,利用鱼腹类截面,提高起重机主梁的承载能力。但是该装置具有以下缺点:1、该主梁是由普通钢结构焊接而成,无预设反拱,在适用于大跨度门式起重机时,其截面刚度要求变高,从而需要更高的截面、更大的板厚。2、该主梁竖向刚度小,下挠变形大,致使起重小车爬坡大。3、该种主梁仅适用于中小跨度门式起重机,若扩展延伸用于铁路货场、港口等场景下使用的大跨度门式起重机主梁,则须提高钢材用量来满足刚度、强度的要求,不再具有制造成本低的优势。
技术实现思路
本技术所要解决的技术问题就是针对上述缺陷,提供一种高刚度、少耗材、低成本、结构简单、组装方便,能够适用于铁路货场、港口及其他大型工作场景下的大跨度预应力主梁门式起重机。本技术是通过以下技术方案实现的:一种大跨度预应力主梁门式起重机,包括预应力主梁、端梁、防锈防飞锚套筒、横联架、起重小车、支腿、下横梁和大车运行机构,所述预应力主梁安装在支腿上,两根主梁端头由端梁联结,并在主梁上方安有防旁弯的横联架,防锈防飞锚套筒安装在预应力主梁端面,下横梁安装在支腿底端,大车运行机构安装在下横梁上,使起重机纵移,起重小车安装在主梁上的横移轨道上,完成吊装作业。所述预应力主梁是由矩形梁与预应力拱架构成的组合梁,节段拼装后实施预应力张拉。预应力主梁设计预设向上的适度反拱,巧妙地提 ...
【技术保护点】
1.大跨度预应力主梁门式起重机,包括预应力主梁、端梁、防锈防飞锚套筒、横联架、起重小车、支腿、下横梁和大车运行机构,所述预应力主梁安装在支腿上,两根主梁端头由端梁联结,并在主梁上方安有防旁弯的横联架,防锈防飞锚套筒安装在预应力主梁端面,下横梁安装在支腿底端,大车运行机构安装在下横梁上,使起重机纵移,起重小车安装在主梁上的横移轨道上,完成吊装作业。/n
【技术特征摘要】
1.大跨度预应力主梁门式起重机,包括预应力主梁、端梁、防锈防飞锚套筒、横联架、起重小车、支腿、下横梁和大车运行机构,所述预应力主梁安装在支腿上,两根主梁端头由端梁联结,并在主梁上方安有防旁弯的横联架,防锈防飞锚套筒安装在预应力主梁端面,下横梁安装在支腿底端,大车运行机构安装在下横梁上,使起重机纵移,起重小车安装在主梁上的横移轨道上,完成吊装作业。
2.如权利要求1所述的大跨度预应力主梁门式起重机,其特征是所述预应力主梁是由矩形梁与预应力拱架构成的组合梁,节段拼装后实施预应力张拉。
3.如权利要求1或2所述的大跨度预应力主梁门式起重机,其特征是所述预应力主梁为预应力钢结构梁。
4.如权利要求1或2所述的大跨度预应力主梁门式起重机,其特征是所述预应力主梁为预应力钢管混凝土梁。
5.如权利要求1或2所述的大跨度预应力主梁门式起重机,其特征是所述预应力主梁为预应力...
【专利技术属性】
技术研发人员:孙金更,刘燕玲,张善涛,曾建平,张娜,
申请(专利权)人:北京国铁科技有限公司,
类型:新型
国别省市:北京;11
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