Winch mounting seat and winch assembly

The utility model belongs to the technical field of winch equipment and provides a winch installation seat and a winch assembly.The winch installation seat comprises a bottom support, a first support and a second support, and the first support and the second support are arranged on the bottom support in a spaced mode in the first direction and provided with a first through hole and a second through hole respectively; the side wall, located in the first direction, of the first support is provided with a first spigot face, the first spigot face is concaved inwards to form a first limiting spigot, the second support is provided with a second spigot face, the second spigot face is parallel to the first spigot face, the second spigot face is concaved inwards to form a second limiting spigot, and the second limiting spigot is parallel to the first spigot face. The first limiting seam allowance and the second limiting seam allowance are used for conducting radial positioning on a driving assembly and a bearing seat