the seat of the control cabinet, marked by a cross-bearer (1),comprises a longitudinal support (2) and a connecting seat (3), where two transverse carriers (1) and two longitudinal carriers (2) are tightly connected by four connecting seats (3) and form a rectangular frame seat, and where the four connecting seats (3) are located at four corners of the frame seat, and where the connecting seat (3) includes a base body (31), and where the base body (31) is a rectangular block structure with four side surfaces and one end surface, and where an attachment ear (32) is located at the top and bottom side surfaces of the base body (31),and where a fixing hole is provided for in each fixing tube (32); and where a connecting surface (33) is provided between the upper and lower fixing tubes (32), and the connecting surface (33) and the end surface of the base body (31) respectively are located at the front and rear sides of the base body (31), and where the connecting surface (33) and the end surface of the base body (31) are aligned parallel to each other; and where a positioning gap (34) is provided on the connecting surface (33), and where a cylindrical lead (11) is placed on the cross-bearer (1) which is inserted into the positioning hole (34),and where a bolt is inserted in the cylindrical lead (11), and where the transverse carrier (1) and the connecting seat (3) are firmly connected to each other; and where several locking holes (35) are stratified at the end surface of the base body (31), and where at the end of the longitudinal carrier (2) several passage holes (21) are provided and a bolt is passed through the passage holes (21) and the locking holes (35) and the longitudinal carrier (2) and the connecting seat (3) are firmly connected.
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