Heavy electric radiation protection door

Abstract

The invention relates to a heavy electric radiation protection door. The door comprises a base with door hole, a door body and an electric control box, wherein the base above the door hole is provided with a main beam into which a lead screw driven by a motor is penetrated; multiple groups of horizontal pulleys are hung at the lower end of a nut engaged with the lead screw; rollers arranged at the upper ends of each group of horizontal pulleys are pressed on the surface of a horizontal guide rail arranged on the main beam in a sliding way; and all the lower ends of each group of horizontal pulleys are connected with the upper end of the door body. The door has a simple structure; stable and accurate running of the door body is realized by the lead screw and the horizontal pulley; opening or closing of the door body is realized by a frequency converter control motor; and the door has high automation level, is safe and reliable, and has a good radiation protection effect because barium sulfate concrete is filled in the door body.

Description

technical field [0001] The invention belongs to the technical field of radioactive material protection, in particular to a heavy-duty electric radiation protection door. Background technique [0002] Radioactive substances have been widely used in various fields since their discovery, such as medicine, energy or military industry, etc. When transporting, producing or storing radioactive substances, overall protection must be done. Not only the walls must be able to prevent radiation leakage, but also the doors and body fluids must be protected. Do a good job of protection. For example, the protective door structure of a certain military enterprise is: including a base body composed of a concrete wall or a granite mountain, a door body, a driving device, and an electric control box. The base body is made with a door opening for entry and exit. The main beam is installed on the main beam, and the thickened door body is hoisted on the main beam through the guide rail. The thick...

AI Technical Summary

Problems solved by technology

[0002]Radioactive substances have been widely used in various fields since their discovery, such as medicine, energy or military industry, etc. When transporting, producing or storing radioactive substances, the overall Protection, not only the wall should be able to prevent radiation leakage, but also the door body liquid should be well protected. For example, the protective door structure of a military industrial enterprise is: including the base body, door body, driving device and electric control box composed of concrete walls or granite mountains , the base is made with a door opening for entry and exit, and the main beam is installed on the base above the door opening. The thickened door body is hoisted on the main beam through guide rails, and the thickened door body is driven by a driving device. The driving device can be a transmission of a motor and a gear set. The mode can also be the transmission mode of the motor and the chain. The combined transmission mode of the motor and the gear set is relatively stable and the speed is fast. A gear is made of a material with special hardness. During use, regular inspection and maintenance are required to avoid operational failures caused by gear damage, and the noise of gear transmission is very loud. At the same time, processing gears requires special equipment and materials. It is bound to increase the production cost of the gear set and increase the user's use cost; the manufacturing and installation accuracy requirements of the components in the combination of the motor and the chain are relatively low, the center distance is relatively large, the overall transmission structure is simple, and the instantaneous chain speed and instantaneous The transmission ratio is not constant, but the transmission stability is poor, especially in emergency parking, the chain drive cannot brake in time, which may easily cause accidents

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