The utility model relates to a general tooling for assembling and welding the rotary support mounting seat of excavator, which comprises a working platform, a driving component and at least three sets of positioning components around the driving component. Each positioning component includes a positioning seat and a supporting component parallel to the working platform. The driving component includes a driving guide cylinder, a driving shaft and a driving block, and a driving guide cylinder is a cylinder installed on the working platform. The movable block has a conical surface and is located in the driving guide barrel, and one end of the driving shaft is connected with the driving block; the supporting component comprises a supporting shaft, a spring and a positioning block; the supporting shaft is supported on the working platform through a supporting seat; the supporting shaft is sleeved with a limit ring, one end of the supporting shaft is against the conical surface of the driving block, and the other end of the supporting shaft is provided with the positioning block, and the spring is sleeved on the supporting shaft and positioned on the working platform. Between the support seat and the limit ring, each positioning seat is mounted on the working platform and is located under the positioning block. The utility model uses the above structure to coincide the process datum with the design datum, and eliminates the error caused by the datum conversion.
【技术实现步骤摘要】
挖掘机回转支承安装座组焊通用工装
本技术涉及挖掘机回转支承安装座定位加工领域,尤其是涉及一种工艺基准与设计基准重合,消除因基准转化产生的误差的挖掘机回转支承安装座组焊通用工装。
技术介绍
现有的回转支承安装座结构分为焊接式和整体式两种,中小型挖掘机一般采用生产成本低、生产效率高的焊接式结构。如图1至图2所示,焊接式结构的回转支承安装座A主要由座圈A1和卷圆板A2组成,上部为锻造的座圈A1,下部为钢板卷圆焊接成的卷圆板A2,座圈A1与卷圆板A2对接处的内、外圈均需焊接,待与下车架完成组焊后再进行整体加工。焊缝是回转支承安装座最薄弱、最关键部位,在生产制造时必须保证焊缝质量,若座圈A1与卷圆板A2同轴度误差较大,出现四周焊缝不均匀,受力不均匀,在长期疲劳载荷作用下极易导致焊缝开裂现象,进而导致下车架结构件整体报废。同时,回转支承通过螺栓固定于回转支承安装座上,并与上车连接,若座圈A1与卷圆板A2同轴度差,导致上下车重心偏离设计位置,在挖掘工作时易出现因整机平衡性引起的异常抖动等问题,且此类问题难以找出原因。因此,在生产制造时须保证回转支承安装座组焊精度,防止产生系列累 ...
【技术保护点】
1.挖掘机回转支承安装座组焊通用工装,其特征在于:其包括工作平台、推动组件,及至少三组围绕推动组件设置的定位组件,各定位组件包括定位座及平行于工作平台设置的撑开组件,其中:推动组件,其包括推动导向筒、推动轴及推动块,推动导向筒为立于工作平台安装的圆筒,推动块为具有圆锥面的块体且其位于推动导向筒内,推动轴一端与所述推动块相连;撑开组件,其包括撑开轴、弹簧及定位块,撑开轴通过支撑座架于工作平台之上,撑开轴套设一限位环,撑开轴一端抵于所述推动块的圆锥面,撑开轴另一端装有所述定位块,弹簧套于撑开轴并位于支撑座及限位环之间;各定位座装于工作平台且位于对应撑开组件所述定位块之下。
【技术特征摘要】
1.挖掘机回转支承安装座组焊通用工装,其特征在于:其包括工作平台、推动组件,及至少三组围绕推动组件设置的定位组件,各定位组件包括定位座及平行于工作平台设置的撑开组件,其中:推动组件,其包括推动导向筒、推动轴及推动块,推动导向筒为立于工作平台安装的圆筒,推动块为具有圆锥面的块体且其位于推动导向筒内,推动轴一端与所述推动块相连;撑开组件,其包括撑开轴、弹簧及定位块,撑开轴通过支撑座架于工作平台之上,撑开轴套设一限位环,撑开轴一端抵于所述推动块的圆锥面,撑开轴另一端装有所述定位块,弹簧套于撑开轴并位于支撑座及限位环之间;各定位座装于工作平台且位于对应撑开组件所述定位块之下。2.根据权利要求1所述的挖掘机回转支承安装座组焊通用工装,其特征在于:所述推动导向筒、推动轴及推动块同轴设置。3.根据权利要求1或2所述的挖掘机回转支承安装座组焊通用工装,其特征在于:所述推动轴为丝杆,该推动轴一端与所述推动块一体相连,推动轴另一端伸出所述推动导向筒并与一摇把相连。4.根据权利要求1或2所述的挖掘机回转支承安装座组焊通用工装,其特征在于:所述推动块包括重叠分布的上圆锥部及下圆柱部,上圆锥部及下圆柱部同轴设置且一体相连。5.根据权利要求1所述的挖掘机回转支承安装座组焊通用...
【专利技术属性】
技术研发人员:杨英,
申请(专利权)人:厦门厦工机械股份有限公司,
类型:新型
国别省市:福建,35
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