Flange cover mounting and dismounting device and cooling device

A flange cover mounting and dismounting device, comprising:

• a base part, comprising a fastener element with a fastener hole array, and being fastened to a flange cover mounting surface by the fastener hole array and an adjusting element, connected with the fastener element;
• and
• a jib arm assembly, being pivotally connected to the fastener element;
• wherein the adjusting element comprises a fixing mechanism and a clamping mechanism that can move relative to each other;
• the fixing mechanism is connected with the fastener element;
• and
• the clamping mechanism clamps the flange cover mounting surface from edges of the flange cover mounting surface, the clamping mechanism comprising a first clamping element and a second clamping element coupled by a fastening bolt;
• wherein the fixing mechanism comprises an L-shaped bracket, one side of the L-shaped bracket is connected with the fastener element, and the other side of the L-shaped bracket is disposed with a sliding chute extending along a length direction thereof and the clamping mechanism moves relative to the fixing mechanism along the sliding chute;
• wherein the fastening bolt passes through the first clamping element, the sliding chute and the second clamping element.