公开(公告)号：WO2006003248A8

公开(公告)日：2006-04-13

申请号：PCT/FI2005000317

申请日：2005-07-05

Applicant: ROCLA OYJ ,  POLVILAMPI JANNE

Inventor： POLVILAMPI JANNE

IPC: B66F9/08 ,  B66F20060101

CPC classification number: B66F9/08 ,  Y10T29/49625

Abstract: The invention relates to the mast-hydraulic cylinder construction (4, 5) of a two or multiple-stage forklift mast. The substantially vertical beams (4, 5) and cylinder liners (6) of the solid mast structure form an integrated structure (4, 5), in which the cylinder liners (6) consist of ducts integrated within the beams (4, 5), with the mass centre of the cross-section of the integrated structures being at the centre of the cylinder liner (6) or in its immediate vicinity so that the integrated structure (4, 5) can be manufactured by heat extrusion or cold drawing, and in that the integrated structure (4, 5) comprises a first protrusion (14), whose surface substantially transverse to the direction of movement of the forklift and facing the cylinder liner is a bearing surface (17) for a roller bearing (16), and a second protrusion (15) for providing a mass centre at the centre of the cylinder liner (6) or in its immediate vicinity, and a support surface (18, 19) substantially transverse to the direction of movement of the forklift and disposed on the second protrusion (15) or on the outer surface of the cylinder liner facing the first protrusion (14). The invention also relates to a method for producing an integrated structure (4, 5).

Abstract translation: 本发明涉及两级或多级叉车桅杆的井架 - 液压缸结构（4,5）。 固体桅杆结构的基本上垂直的梁（4,5）和汽缸套（6）形成一体式结构（4,5），其中汽缸套（6）由集成在梁（4,5）内的导管组成， ，其中一体化结构的横截面的质心位于气缸套（6）的中心处或其紧邻附近，使得一体式结构（4,5）可以通过热挤压或冷拔来制造， （4,5）包括第一突起（14），所述第一突起的表面基本上横向于所述叉车的运动方向并面向所述气缸套，所述第一突起是用于滚动轴承（16）的支承表面（17） ，以及用于在汽缸套（6）的中心或其附近提供质量中心的第二突起（15），以及基本上横向于叉车的运动方向的支撑表面（18,19） 在第二突起（15）上或在外表面上 气缸套面向第一突起（14）。 本发明还涉及用于制造整体结构（4,5）的方法。