Mounting frame for displacing and fixing in a shaft, comprising - a main frame , - a first primary fixing component for supporting the mounting frame on a first shaft wall during fixing of the mounting frame in the shaft and - a secondary fixing component for supporting the mounting frame on a second shaft wall of the shaft opposite the first shaft wall in a fixing direction during fixing of the mounting frame in the shaft , - the first primary fixing component and the secondary fixing component being arranged on the main frame , wherein - the first primary fixing component and/or the main frame can assume a transport position and a working position, a change of the first primary fixing component and/or the main frame from its working position to its transport position leading to a reduction in an extension of the mounting frame in an extension direction that differs from the fixing direction , and the first primary fixing component has an arm and a first primary contact element arranged on the arm , the arm , in the working position of the first primary fixing component , extending away from the main frame in the extension direction , and at least part of the arm being displaced toward the main frame for a change of the first primary fixing component from the working position to the transport position, characterized in that a second primary fixing component comprising a second primary contact element for supporting the mounting frame on the first shaft wall during fixing of the mounting frame in the shaft , which component is thus immovably arranged on the main frame such that no part of the second primary fixing component projects beyond the main frame in the extension direction . - a main frame , - a first primary fixing component for supporting the mounting frame on a first shaft wall during fixing of the mounting frame in the shaft and - a secondary fixing component for supporting the mounting frame on a second shaft wall of the shaft opposite the first shaft wall in a fixing direction during fixing of the mounting frame in the shaft , - the first primary fixing component and the secondary fixing component being arranged on the main frame , wherein - the first primary fixing component and/or the main frame can assume a transport position and a working position, a change of the first primary fixing component and/or the main frame from its working position to its transport position leading to a reduction in an extension of the mounting frame in an extension direction that differs from the fixing direction , and the first primary fixing component has an arm and a first primary contact element arranged on the arm , the arm , in the working position of the first primary fixing component , extending away from the main frame in the extension direction , and at least part of the arm being displaced toward the main frame for a change of the first primary fixing component from the working position to the transport position, characterized in that a second primary fixing component comprising a second primary contact element for supporting the mounting frame on the first shaft wall during fixing of the mounting frame in the shaft , which component is thus immovably arranged on the main frame such that no part of the second primary fixing component projects beyond the main frame in the extension direction . <EOS>