Construction machine attachment mounting and demounting apparatus and construction machine equipped with same

A construction machine attachment mounting and demounting apparatus that mounts and demounts an attachment for work on and from an arm of a working device, the attachment mounting and demounting apparatus comprising:

• a first member that includes a first hook and is coupled to the arm;
• a second member that includes a second hook and is rotatably supported by the first member;
• a first hydraulic cylinder that includes one end coupled to a first support shaft provided to the first member, and the other end coupled to a second support shaft provided to the second member, and rotates the second member relative to the first member;
• a first retaining member that is rotatably supported by a third support shaft provided to the first member, the third support shaft being placed above the first hook, and is biased by a first biasing member in such a manner as to protrude from an opening portion of the first hook;
• a second hydraulic cylinder that moves the first retaining member against the biasing force of the first biasing member in such a manner as to retract the first retaining member from the opening portion of the first hook in conjunction with the operation of the first hydraulic cylinder;
• a second retaining member that is rotatably supported by a fourth support shaft provided to the second member, the fourth support shaft being placed above the second hook, and is biased by a second biasing member in such a manner as to protrude from an opening portion of the second hook;
• and
• a third hydraulic cylinder that moves the second retaining member against the second biasing member in such a manner as to retract the second retaining member from the opening portion of the second hook in conjunction with the operation of the first hydraulic cylinder.