Elevator car frame structure

The invention discloses an elevator car frame structure which comprises an elevator car, a car roof, an upper beam assembly located above the car roof, a car bottom assembly installed at the bottom of the elevator car, a lower beam assembly installed at the bottom of the car bottom assembly and vertical beams installed on the two sides of the elevator car, and the lower ends of the vertical beams are installed on the two sides of the car bottom assembly and the two sides of the lower beam assembly. The upper beam assembly is mounted at the upper end of the vertical beam; two diversion sheave structures are mounted on the upper beam assembly; safety tongs are embedded in the two ends of the lower beam assembly, safety lifting devices connected with the safety tongs are arranged on the two sides of the lower beam assembly, and the safety lifting devices are in transmission connection with a speed limiter steel wire rope. The double-diversion-sheave elevator has the advantages that due to the double-diversion-sh