The invention discloses a mechanism and adjustment method for adjusting the lifting clearance of tower crane, which not only has the advantages of convenient adjustment of the clearance between roller and tower body, but also solves the problems of easy rusting and easy damage of screw used in the prior art to adjust the clearance between roller support and tower body; the scheme is as follows: a mechanism for adjusting the lifting clearance of tower crane is provided as follows: a mechanism for adjusting the lifting clearance of tower crane The utility model comprises a sleeve arranged in the main structure of the sleeve, the limit baffle at the end of the sleeve is installed between the hexagonal head of the screw and the screw convex platform, and the screw can only rotate but not move in the sleeve; the outer thread of the other end of the screw is connected with the inner thread of the left side of the roller support; and the roller support and the sleeve are connected by keys to limit the roller. The rotation of the screw is transformed into the translation of the roller support by turning the hexagonal head of the screw from the outside of the sleeve and restricting the translation of the screw through the guiding function of the key and the sleeve, so as to achieve the purpose of adjusting the clearance of the roller.
【技术实现步骤摘要】
一种可调节塔机顶升间隙的机构及调整方法
本专利技术涉及塔式起重机顶升作业领域,特别是涉及一种可调节塔机顶升间隙的机构及调整方法。
技术介绍
塔式起重机一般都需要顶升作业;顶升作业时,顶升套架上面的滚轮会以塔身为导轨向上(下)移动,套架滚轮与塔身之间的间隙十分重要;目前的控制间隙的结构有两种:一是固定滚轮,间隙不可调整,如图1所示,这对于套架和塔身制作的公差要求十分严格,而且不便于安装;二是用螺纹调节间隙(典型结构如图2),这种结构螺杆暴露在外,对螺杆的长度、表面质量具有一定的要求,由螺杆带动滚轮支架的前后移动,对螺杆长度要求较长,而且螺杆螺纹暴露在外因空气和天气影响容易生锈而失去调节功能,此外,因螺杆暴露在外过长,容易在安装运输过程中产生损坏。因此,需要对一种可调节塔机顶升间隙的机构进行新的研究设计。
技术实现思路
为了克服现有技术的不足,本专利技术提供了一种可调节塔机顶升间隙的机构,通过在套筒内部的螺纹和平键的导向作用,将螺杆的转动转化为滚轮支架的平移。一种可调节塔机顶升间隙的机构的具体方案如下:一种可调节塔机顶升间隙的机构,包括设于套架主体结构的套筒,螺杆穿过套筒且螺杆在套筒内部能实现自由转动,套筒限制螺杆的平移,滚轮支架在套筒内可平移,套筒限制滚轮支架的转动,螺杆一端和滚轮支架通过螺纹连接,从套筒的外侧旋转螺杆,将螺杆的转动转化为滚轮支架的平移。上述的机构,螺杆深入到套筒内与滚轮支架通过螺纹连接,滚轮支架端部设置的滚轮凸出套筒设置,对螺杆长度要求短;调节间隙的螺纹在套筒内部,套筒内涂满润滑脂可防止螺纹生锈,暴露在套筒外侧的只有螺杆端部,整个螺杆不易生锈, ...
【技术保护点】
1.一种可调节塔机顶升间隙的机构,其特征在于,包括设于套架主体结构的套筒,螺杆穿过套筒且螺杆在套筒内部能实现自由转动,套筒限制螺杆的平移,滚轮支架在套筒内可平移,套筒限制滚轮支架的转动,螺杆一端和滚轮支架通过螺纹连接,从套筒的外侧旋转螺杆,将螺杆的转动转化为滚轮支架的平移。
【技术特征摘要】
1.一种可调节塔机顶升间隙的机构,其特征在于,包括设于套架主体结构的套筒,螺杆穿过套筒且螺杆在套筒内部能实现自由转动,套筒限制螺杆的平移,滚轮支架在套筒内可平移,套筒限制滚轮支架的转动,螺杆一端和滚轮支架通过螺纹连接,从套筒的外侧旋转螺杆,将螺杆的转动转化为滚轮支架的平移。2.根据权利要求1所述的一种可调节塔机顶升间隙的机构,其特征在于,所述螺杆的端部凸出套筒设置,螺杆凸出所述套筒的端部设置六角头。3.根据权利要求1所述的一种可调节塔机顶升间隙的机构,其特征在于,所述滚轮支架与所述的套筒内侧通过键连接。4.根据权利要求1所述的一种可调节塔机顶升间隙的机构,其特征在于,所述套筒远离所述滚轮支架的端部设置限位挡板,限位挡板与所述螺杆凸台接触设置,限位挡板设于螺杆凸出所述套筒的端部与螺杆凸台...
【专利技术属性】
技术研发人员:毛瑞年,徐美,罗建峰,
申请(专利权)人:广东大汉建设机械有限公司,
类型:发明
国别省市:广东,44
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