Construction machine equipped with dozer

A construction machine, comprising:

• a lower travelling body including a lower frame;
• a dozer capable of vertically rotational movement relative to the lower frame;
• at least one dozer cylinder including a cylinder tube and a piston rod capable of protruding from and retracting into the cylinder tube to bring the dozer cylinder into expansion and contraction in a cylinder axis direction, the dozer cylinder being connected to the dozer so as to bring the dozer into vertically rotational movement, through the expansion and contraction of the dozer cylinder, between an upper position and a lower position;
• a first cylinder pin movable integrally with a first cylinder element, which is one of the cylinder tube and the piston rod, while connecting the first cylinder element to the dozer so as to allow the first cylinder element to make rotational movement relative to the dozer;
• a second cylinder pin movable integrally with a second cylinder element, which is the other of the cylinder tube and the piston rod, while connecting the second cylinder element to the lower frame so as to allow the second cylinder element to make rotational movement relative to the lower frame;
• a first connection member joined with an end of the first cylinder pin and defining a first through-hole passing through the first connection member in a first penetration direction intersecting the cylinder axis direction;
• a second connection member joined with an end of the second cylinder pin and defining a second through-hole passing through the second connection member in a second penetration direction that is parallel to the first penetration direction of the first through-hole when the dozer is in the upper position;
• and
• a fixing member for interconnecting the first connection member and the second connection member to fix the dozer in the upper position, wherein
• the fixing member includes:
• a first engagement section having a first insertion part and a first support part for supporting the first insertion part, the first engagement section being capable of first engagement with the first connection member, the first engagement involving insertion of the first insertion part into the first through-hole, to be thereby detachably connected to the first connection member;
• a second engagement section having a second insertion part and a second support part for supporting the second insertion part, the second engagement section being capable of second engagement with the second connection member, the second engagement involving insertion of the second insertion part into the second through-hole, to be thereby detachably connected to the second connection member;
• and an interconnection section interconnecting the first engagement section and the second engagement section.