The invention discloses a hand-push type small hydraulic hoisting device in the technical field of hoisting equipment, which comprises a movable base, a support arm is arranged on the movable base, a main arm is hinged to the upper part of the support arm, the main arm is slidably sleeved with a sleeve piece, a hydraulic telescopic piece is hinged between the sleeve piece and the support arm, and the hydraulic telescopic piece is hinged to the lower part of the support arm. The cavity is formed in the outer side end of the main arm; the auxiliary arm is inserted into the cavity; the auxiliary arm comprises a sleeve and a movable rod inserted in the sleeve in a sliding mode, the contact area of the cavity and the sleeve and the contact area of the cavity and the movable rod are a first cavity and a second cavity respectively, a fixing piece used for fixing the movable rod is arranged on the main arm, and the diameter of the sleeve is larger than that of the second cavity. The auxiliary arm is composed of the sleeve and the movable rod inserted in the sleeve in a sliding mode, in the moving and extending process of the auxiliary arm, the sleeve is located in the cavity of the main arm all the time, the contact area of the movable rod and the cavity of the main arm does not change, and pressure borne by the interior of the cavity of the main arm is reduced.
本发明公开了起重设备技术领域的一种手推式小型液压起吊装置,包括:移动底座,所述移动底座上设有支臂,所述支臂的上方铰接有主臂,所述主臂上滑动套设有套件,所述套件与支臂之间铰接有液压伸缩件,设置在主臂外侧端上的腔体以及插在腔体内的副臂;所述副臂包括套管以及滑动插在套管内的活动杆,所述腔体与套管、活动杆的接触区域分别为第一腔体与第二腔体,所述主臂上设有用于固定活动杆的固定件,所述套管的直径大于第二腔体的直径,本发明中副臂是由套管以及滑动插在套管内的活动杆组成,在副臂移动伸长的过程中,套管始终处于主臂的腔体中,活动杆与主臂腔体的接触区域不会变化,减小主臂腔体内部受到的压力。
Hand-push type small hydraulic lifting device
一种手推式小型液压起吊装置
01.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
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