The invention relates to the field of hoisting equipment reinforcement, in particular to a reinforcing construction method of novel crane beam with right-angled abrupt change support. The reinforcingconstruction method comprises the following steps: step A, fatigue crack treatment: reinforcing a fatigue crack appearing on a crane beam support; step B, second webs are additionally arranged, and the two sides of a first web of the crane beam are each provided with one second web and fixedly welded to inserting plates; and C, ultrasonic impact treatment is conducted on a reinforced weld joint and connecting weld joints of the two second webs and the inserting plates. After cracks appear on a support of an original crane beam, the cracks need to be treated and reinforced firstly, then the second web plates are arranged on the two sides of the first web plate respectively, the second web plates and the first web plate can be stressed together, stress concentration is reduced, residual compressive stress can be generated on the surface of the weld joint through the ultrasonic impact treatment, and the fatigue performance of the weld joint is improved.
本申请涉及吊运设备加固的领域,尤其是一种直角式突变支座吊车梁的加固施工方法,其步骤为:步骤A、疲劳裂缝处理对吊车梁支座出现的疲劳裂缝进行补强;步骤B、增加第二腹板在吊车梁的第一腹板的两侧各设置一个第二腹板,并与插板焊接固定;步骤C、超声冲击处理对补强后的焊缝和两个第二腹板与插板的连接焊缝进行超声冲击处理。本申请中当原有的吊车梁的支座上出现裂缝后,要先处理裂缝并补强,然后在第一腹板的两侧各设置一个第二腹板,可以和第一腹板共同受力,降低应力集中,超声冲击处理可以使焊缝表面产生残余压应力,以提高其疲劳性能。
Reinforcing construction method of novel crane beam with right-angled abrupt change support
一种直角式突变支座新型吊车梁的加固施工方法
2021-02-05
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
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