Pin connection device
AssigneeKobelco Construction Machinery Co., Ltd.
InventorTakanori Yamasaki
Life of this patent
Estimating the term…
Abstract
Assembly of a pin guide member for retaining a pair of connecting pins is facilitated for improvement in an assembling property and cost reduction. On the premise that inner brackets are overlapped with outer brackets, and pins are inserted into pin holes thereof so as to connect the brackets to each other, inner collar portions of pin guide members for retaining the pins are combined and integrated with each other by bolts and nuts through a supporting plate serving as a connection member. Meanwhile, outer collar portions of both the pin guide members are supported in the pin radial direction with respect to the inner brackets and rotation thereof is prevented.
Claims10
A pin connection device connecting two overlapped members, comprising:
- a first connection portion provided on a first side of each of the two overlapped members to be connected to each other;
- a second connection portion provided on a second side of each of the two overlapped members to be connected to each other, wherein said first and second connection portions are separated by a clearance;
- pin holes provided in both said first and second connection portions;
- first and second annular pin guide members provided side by side in the axial direction of the pin guide members, said pin guide members having inner ends opposing to each other, said pin guide members extending in said clearance between said first and second connection portions and having outer ends adjacent said first and second connection portions, respectively;
- first and second pins respectively provided in said first and second pin guide members and arranged to move in opposite directions between a connection position wherein the pins are inserted into said pin holes and a disconnection position wherein the pins are removed from at least said pin holes of the outer ones of said two overlapped members;
- a connection member provided between the opposed inner ends of the first and second annular pin guide members, the connection member comprising semi-annular bodies, wherein each of the semi-annular bodies has a first fixing portion at a first axial side thereof to be detachably fixed to said inner end of said first annular pin guide member in the pin radial direction, and a second fixing portion at a second axial side thereof to be detachably fixed to the second annular pin guide member in the pin radial direction;
- fasteners extending through at least one of the inner end of said first annular pin guide member and the inner end of said second annular pin guide member, and at least partially into the connection member, such that the fasteners detachably fix the first fixing portion to the inner end of said first annular pin guide member, and the second fixing portion to the inner end of said second annular pin guide member;
- and
- supporting means for supporting the outer ends of said pin guide members only in the pin radial direction with respect to said connection portions.
Dependencies are inferred from the claim text.