Pull-up frame

A pull-up frame, comprising a support base, a first connecting frame and a second connecting frame, wherein the first connecting frame and the second connecting frame are both connected to the support base, and wherein the support base comprises a first supporting mechanism and a second supporting mechanism, wherein the first supporting mechanism is rotatably connected to an end of the first connecting frame, and the second supporting mechanism is rotatably connected to an end of the second connecting frame, wherein a first sliding member is arranged on the first connecting frame, and a second sliding member is arranged on the second connecting frame, and wherein the first sliding member and the first supporting mechanism are connected to the first connecting frame;

• the second sliding member and the second supporting mechanism are rotatably connected to a second connecting member;
• the first sliding member is provided with a first locking member for fixing the first sliding member, and the second sliding member is provided with a second locking member for fixing the second sliding member;
• a cross-sectional shape of the first connecting frame is a non-circular shape, the first sliding member is provided with a first special-shaped hole for matching with the first connecting frame, a cross-sectional shape of the second connecting frame is a non-circular shape, and the second sliding member is provided with a second special-shaped hole for matching with the second connecting frame;
• wherein the first connecting frame is provided with a first limiting hole and a second limiting hole;
• the first sliding member is provided with a first mounting hole for the first locking member to pass through;
• the first locking member can be engaged with the first limiting hole or the second limiting hole;
• the second connecting frame is provided with a third limiting hole and a fourth limiting hole;
• the second sliding member is provided with a second mounting hole for the second locking member to pass through;
• the second locking member can be engaged with the third limiting hole or the fourth limiting hole;
• the first connecting member comprises a first rotating shaft, a second rotating shaft, a first connecting piece and a second connecting piece;
• wherein the two ends of the first connecting piece are respectively rotatably connected to the first rotating shaft and the second rotating shaft;
• and the two ends of the second connecting piece are respectively rotatably connected to the first rotating shaft and the second rotating shaft;
• wherein the first rotating shaft is passed through the first sliding member, and the second rotating shaft is passed through the first supporting mechanism;
• wherein the first connecting piece is located on one side of the first sliding member and the first supporting mechanism;
• wherein the second connecting piece is located between the first sliding member and the first supporting mechanism;
• the second connecting member comprises a third rotating shaft, a fourth rotating shaft, a third connecting piece and a fourth connecting piece, the two ends of the third connecting piece are respectively rotatably connected to the third rotating shaft and the fourth rotating shaft, the two ends of the fourth connecting piece are respectively rotatably connected to the third rotating shaft and the fourth rotating shaft, the third rotating shaft is passed through the second sliding member, the fourth rotating shaft is passed through the second supporting mechanism, the third connecting piece is located on one side of the second sliding member and the second supporting mechanism, and the fourth connecting piece is located on an other side of the second sliding member and the second supporting mechanism.