Microbial experiment cooling and temperature-sensing multipurpose rack

A multi-function cooling and thermo-sensitive rack for microbiology experiments, characterized in that,

• the multi-function cooling and thermo-sensitive rack comprising a lateral frame and a base connected by angle adjustable connectors, wherein the lateral frame and the base are provided respectively with at least one horizontal bar having a plurality of positioning dents and at least one positioning hole, which are used to place and fix experiment devices in the positioning dents and the positioning holes,
• wherein temperatures of the experiment devices are sensed and displayed by at least one temperature sensor arranged at least one temperature-measured site of the lateral frame and the base and at least one temperature-displaying prompter connected with the at least one temperature sensor;
• or by the horizontal bar and base,
• at least one of the connectors comprises a reversible ratchet mechanism,
• wherein at least one of the connectors has a through hole that has two coplanar circle centers A, B, internal teeth are formed symmetrically on the wall of the through hole, wherein the ratchet that has an outer wall peripherally formed with a row of teeth is received in the through hole, the ratchet can radially move to and fro toward either of the circle centers A and B, and wherein the teeth of the ratchet can engage with each of the internal teeth,
• wherein a handle extends radially outward from outer periphery of the through hole, a center axis of the handle is a center line of the handle, the center line of the handle coincides with, is parallel to, or intersects the imaginary connecting line linking the circle centers A and B, and wherein the ratchet is provided with a nut-fitting hole, a square insert, or a mechanical workpiece,
• wherein each of the teeth of the ratchet has a curved top surface C and has a top width D equal to or greater than a root width E, each of the internal teeth has a curved or flat top surface F and has a top width T equal to or greater than a root width L, wherein two retaining rings that retain the ratchet in the through hole and two recesses for receiving the retaining rings are formed at the outer periphery of opposite ends of the ratchet, and wherein the retaining rings are a spring loop cut at a radius thereof.