Attachment fixture of power shovel

Abstract

The present invention relates to a fixture used when an operation attachment of various type is mounted to a power shovel, and the invention provides an attachment fixture capable of being used generally for various power shovels and attachments having different diameters and mounting widths of mounting pins. The attachment fixture comprises a body ( 34 ) for connecting an attachment ( 17 ) to an arm ( 11 ) and a front link ( 12 ) of the power shovel, a spacer 35 interposed in a gap formed between the body and the attachment, and/or a spacer ( 37 ) interposed in a gap formed between the body and the arm as well as the front link. Each of the spacers ( 35, 37 ) is formed into a cylindrical shape, a cylindrical shape having a flange, or a disk-like shape with a center hole ( 36, 38 ) having the same diameters as those of mounting pins or those of the connection pins 13, 14 connecting with the power shovel.

What is claimed is:  
     
         1 . An attachment fixture of a power shovel, comprising a body for connecting an attachment to an arm and a front link of the power shovel, and a spacer interposed in a gap formed between the body and the attachment, wherein the body comprises upper plates located at opposite outer sides of tip ends of the arm and the front link, and a pair of link including U-shaped holes formed in inner sides of a bracket of the attachment, the links include connection pin holes connecting the arm and the front link at medium positions in the longitudinal direction of the links, a pin hole of a fulcrum pin for pivotally supporting the pair of links is disposed above the connection pin holes, U-shaped holes opposed to each other or directed into the opposite direction from each other are disposed below the connection pin holes, and the spacer is formed into a cylindrical shape, a cylindrical shape having a flange, or a disk-like shape with a center hole having the same diameter as those of mounting pins which connect the body and the attachment with each other.  
     
     
         2 . An attachment fixture of a power shovel, comprising a body ( 34 ) for connecting an attachment to an arm and a front link of the power shovel, and a spacer interposed in a gap formed between the body and the arm as well as the front link, wherein the body comprises upper plates located at opposite outer sides of tip ends of the arm and the front link, and a pair of link including U-shaped holes formed in inner sides of a bracket of the attachment, the links include connection pin holes connecting the arm and the front link at medium positions in the longitudinal direction of the links, a pin hole of a fulcrum pin for pivotally supporting the pair of links is disposed above the connection pin holes, U-shaped holes opposed to each other or directed into the opposite direction from each other are disposed below the connection pin holes, the spacer is formed into a cylindrical shape, a cylindrical shape having a flange, or a disk-like shape with a center hole having the same diameter as those of connection pins which connect the body, the arm as well as the front link with one another.  
     
     
         3 . An attachment fixture of a power shovel according to    claim 1   , further comprising a spacer interposed in a gap formed between the body and the arm as well as the front link, wherein the spacer is formed into a cylindrical shape, a cylindrical shape having a flange, or a disk-like shape with a center hole having the same diameter as those of connection pins which connect the body, the arm as well as the front link with one another.