| 摘要 |
The present invention relates to an oil level gauge for construction machine. The oil level gauge for construction machine comprises a plug installed in the top of a lubricating oil injection pipe formed on a turning unit to maintain the airtightness of the inner circumference of the lubricating oil injection pipe; a connection member having an internal air circulation path and installed in the plug to communicate the indoor and outdoor air of the turning unit through the upper and lower parts of the air circulation path; a handle part arranged in the upper part of the connection member; and a gauge part arranged in the lower part of the connection member. The present invention can effectively prevent the spoilage of lubricating oil stored in the turning unit by preventing moisture or a cleaning solution from being mixed with the lubricating oil while being introduced from the outside into the turning unit through the lubricating oil injection pipe and by controlling the rising of air pressure caused by oil mist in the turning unit using the air circulation path of the connection member installed in the plug; thereby improving the performance and durability of the turning unit and also improving the exchangeability and durability of the oil level gauge. Also, the present invention can prevent the handle part from being easily stepped by a user or from being easily damaged by external influence since the handle part is rotated in one direction not to protrude from the plug. |
