Brake retaining device of electric sweeper

The invention discloses a brake retaining device of an electric sweeper, which comprises a bracket, a long foot bar, a short foot bar, a spring and an inhaul cable. A right end of the long foot bar is connected with the inhaul cable, and the long foot bar is hinged with the bracket through a pin to form a lever type brake mechanism. The short foot bar is installed on the long foot bar through a mandrel and a hinge pin, the downside of the short foot bar is provided with a ratchet to mesh with a fan-shaped ratchet wheel raised on the long foot bar; and the short foot bar of a cantilever keeps the position under the action of the inhaul cable and locks the long foot bar, therefore the purpose of parking after brake is realized. The integrative installing structure of the long foot bar and the short foot bar is located in the same one foot control scale, when the long foot bar is stepped to carry out the brake, the short foot bar also can be stepped; the brake retaining device is convenient to operate, good in timeliness, likely to lock, and stable and reliable in parking. The invention is applicable to be matched with various sized sweepers as well as ordinary locomotives.