The invention discloses a leveling landing leg mechanism, engineering machinery and crawler-type tower crane, the leveling landing leg mechanism comprises a telescopic rod (2) used for supporting an upper assembly (11), a telescopic seat (1) used for connecting a lower assembly and a driving screw sleeve (3), and external threads with opposite spiral directions are formed on the outer peripheral surface of the telescopic rod (2) and the outer peripheral surface of the telescopic seat (1); internal threads are formed on the inner circumferential faces of the two ends of the driving threaded sleeve (3), the telescopic rod (2) and the telescopic base (1) are sleeved with the driving threaded sleeve (3), the driving threaded sleeve (3) is in threaded fit with the telescopic rod (2) and the telescopic base (1), and the driving threaded sleeve (3) is correspondingly provided with a leveling driving device (5). The two-way screw-thread fit formed by the driving screw sleeve not only can effectively perform leveling, but also can bear pressure and tensile force through the screw-thread fit, is adaptive to horizontal load, and can effectively adapt to the walking characteristics of the walking type engineering machinery.
本发明公开了一种调平支腿机构、工程机械及履带式塔机,其包括用于支承上装总成(11)的伸缩杆(2)、用于连接下装总成的伸缩座(1)以及驱动螺套(3),所述伸缩杆(2)和伸缩座(1)的外周面上形成有螺旋方向相反的外螺纹,所述驱动螺套(3)两端端部的内周面形成有内螺纹,该驱动螺套(3)套装于所述伸缩杆(2)和伸缩座(1)上并且螺纹配合,且该驱动螺套(3)对应设置有调平驱动装置(5)。本发明通过驱动螺套形成的双向螺纹配合不仅能够有效地进行调平,而且通过螺纹配合既能承受压力、又能承受拉力,且适应水平载荷,能够有效适应行走式工程机械的行走特性。
Leveling support leg mechanism, engineering machinery and crawler-type tower crane
调平支腿机构、工程机械和履带式塔机
2022-12-06
Patent
Electronic Resource
Chinese
Engineering machinery leveling chassis, engineering machinery and crawler-type tower crane
European Patent Office | 2023
|European Patent Office | 2023
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