초록 ▼

An internal pressure explosion-proof construction for an electrically-driven robot with which purging of airtight chambers of the robot in which electric motors are installed can be performed efficiently in a short time when air or inert gas is charged into the airtight chambers. The airtight chambe

An internal pressure explosion-proof construction for an electrically-driven robot with which purging of airtight chambers of the robot in which electric motors are installed can be performed efficiently in a short time when air or inert gas is charged into the airtight chambers. The airtight chambers in which the electric motors are divided into a plurality of blocks, and an automatic opening and closing valve is provided at an outlet port connected to each of the blocks such that it may be opened only when the corresponding block is to be purged.

대표청구항 ▼

In an internal pressure explosion-proof construction for an electrically-driven robot of the type wherein an electric driving motor is installed in each of a plurality of airtight chambers into which air or inert gas is charged when said electrically-driven robot is to be rendered operative, the imp

In an internal pressure explosion-proof construction for an electrically-driven robot of the type wherein an electric driving motor is installed in each of a plurality of airtight chambers into which air or inert gas is charged when said electrically-driven robot is to be rendered operative, the improvement comprising said airtight chambers being grouped into a plurality of blocks, an automatic opening and closing valve installed at an outlet port connected to each of said blocks, and pressure responsive means for opening said outlet port only when the corresponding block is to be purged.