A bolster beam of a hatch gondola car frame, which comprises two pairs of vertical walls, lower and upper shelves that overlap the vertical walls and a frame center sill, wherein the lower shelf is made of narrowed from a center plate space of the frame, on the vertical walls and upper shelf compensating plates are mounted for welded joints with bearing elements of a gondola car and side edges of the upper shelf are intended for interaction with closed hatch covers, while the upper shelf is made with two sloping surfaces, folded-over along the axis of symmetry of a part, the vertical walls have increased height to contact with the shelf with two sloping surfaces and are provided with rectangular recesses, wherein compensating plates mounted on the upper shelf with two sloping surfaces in cross section have the same shape as the latter and the side edges of the upper shelf with two sloping surfaces interact with the working surfaces of closed covers along the generatrixes of lower shelves.
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