Rising and falling bedstead for physical teaching experiments

Abstract

The invention discloses a rising and falling bedstead for physical teaching experiments. The rising and falling bedstead comprises a chassis, wherein a bracket is arranged on the chassis, a groove is formed in one side of the bracket, a bearing block is arranged on the surface of one end, far away from the chassis, of the bracket, a sliding rod is movably connected into the groove, a gear rack is arranged on the surface of the sliding rod, and a gear is mounted at one end of the bearing block and is engaged with the gear rack. According to the rising and falling bedstead for the physical teaching experiments, the groove is formed in one side of the bracket, the sliding rod is movably connected into the groove, the gear rack is arranged on the surface of the sliding rod, and the gear at one end of the bearing block is in mechanical fit with the gear rack, so that the bedstead can rise and fall, hazards caused by rod falling conditions do not occur, and meanwhile, the load bearing capacity of the bedstead is improved; and a sleeve sleeves the surface of a supporting rod, a pretension screw hole is formed in the surface of the sleeve, and a pretension nut is mounted through the pretension screw hole, so that a cross rod of the surface of the sleeve can rotate, and operations for students and teachers are facilitated.

Description

technical field [0001] The invention relates to the technical field of physics teaching appliances, in particular to a lifting platform for physics teaching experiments. Background technique [0002] Physics experiment is an important means of physics teaching. It can not only deepen students' memory and understanding through sensory teaching, but also cultivate students' hands-on ability. The lifting platform used in the existing physical experiments realizes lifting and positioning by fastening bolts. After a period of use, the outer wall of the lifting rod will be severely worn, so that the fastening bolts cannot firmly position the lifting frame at the specified height. And if the object carried by the lifting frame is heavy, the phenomenon of sliding between the lifting frame and the lifting rod will also occur. Contents of the invention [0003] The object of the present invention is to provide a lifting platform for physics teaching experiments to solve the problem...

AI Technical Summary

Problems solved by technology

The lifting platform used in the existing physical experiments realizes lifting and positioning by fastening bolts. After a period of use, the outer wall of the lifting rod will be severely worn, so that the fastening bolts cannot firmly position the lifting frame at the specified height. And if the object carried by the lifting frame is heavy, the lifting frame and the lifting rod will slip off.

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