Raising and lowering device for small bed head/foot frame

A raising and lowering device for a bed head/foot frame, comprising a screw rod guide block (1), a sleeve pin (2) and a mounting assembly, wherein the sleeve pin (2) is movably mounted on an outer side of the screw rod guide block (1), the mounting assembly is arranged on one side of the sleeve pin (2), and the entire raising and lowering device is mounted for raising and lowering operations by arranging the mounting assembly;

• the mounting assembly comprises first springs (3), positioning tubes (4), a screw rod (5), a screw rod sleeve (6), a bed head/foot frame (7) and a second spring (8);
• the first springs (3) are movably mounted at two ends of an inner side of the sleeve pin (2), the positioning tubes (4) are fixedly mounted on two outer sides of the sleeve pin (2), and the screw rod (5) is rotatably mounted under the sleeve pin (2);
• the screw rod sleeve (6) is mounted on an outer side of the screw rod (5) in a threaded manner, the bed head/foot frame (7) is arranged on one side of the screw rod sleeve (6), and the second spring (8) is mounted inside the bed head/foot frame (7).