Light-transmittance device and use method

A light-transmittance device, comprising cylinder sections (1), a two-column vertical lathe (13), and a vertical lathe platform (14), wherein the vertical lathe platform (14) is located below the two-column vertical lathe (13);

• T-shaped supporting fixtures (10) are arranged inside the cylinder sections (1);
• light-transmittance tools are arranged at center positions of the cylinder sections (1);
• each light-transmittance tool comprises a group of light-transmittance bases (2) and a group of light-transmittance plates (4) located on the group of light-transmittance bases (2) respectively;
• two ends of the cylinder sections (1) are provided with rolling ring base plates (3) which are paired and mounted with the cylinder sections (1);
• a roller frame (5) is arranged on a lower side of each group of cylinder section (1);
• the rolling frames (5) are slidably connected with a rigid rail (6);
• the rolling ring base plates (3) face the roller frames (5);
• a theodolite (7) is arranged on one side of the cylinder sections (1);
• a triangular bracket (8) and a light-transmittance platform (9) are arranged on a lower side of a shell of the theodolite (7);
• the triangular bracket (8) is located on an upper surface of the light-transmittance platform (9);
• each light-transmittance base (2) comprises a carrying part (21) and an edge folding part (22) which are made of elastic materials;
• a cross section of a joint between the carrying part (21) and the edge folding part (22) has an angle of 90 degrees;
• a specially-shaped annular elastic sheet (23) made of a metal material is arranged at the joint between carrying part (21) and the edge folding part (22);
• the group of light-transmittance plates (4) comprise a first light-transmittance plate (41), a second light-transmittance plate (42), a third light-transmittance plate (43), and a fourth light-transmittance plate (44);
• and
• the cylinder sections (1) comprise two first cylinders (11) with a first wall thickness and a second cylinder (12) with a second wall thickness greater than the first wall thickness.