PIN TYPE CONNECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To connect two articles with a simple structure even when the pitch of pin holes separated from each other is small and a space is restricted when the two articles are connected to each other by using the combination of engaging pins with the pin holes. SOLUTION: A hydraulic cylinder 14 is disposed on the upper structure of a base machine forming the main body of a pile driver movably on the axes L3 and L4 thereof. An engagement pin 20 is installed at the outer end of a push rod 14b, and an engagement pin 21 is installed projectedly at the end face of a cylinder body 14a on the opposite side of the push rod 14b. The cylinder body 14a and the push rod 14b are relatively moved by the supply of a hydraulic pressure into the cylinder body 14a and by a push rod pulling means inside the cylinder body 14a to engage the engagement pins 20 and 21 with an insert hole 16c in a leader bracket so as to connect the leader bracket to a pile driver main body.