Long-distance coal mine excavator arm

Abstract

The invention discloses a long-distance coal mine excavator arm, and relates to the field of excavator arms. The long-distance coal mine excavator arm comprises a first support arm, wherein one side of the first support arm is connected with a second support arm through a second rotating shaft, and a first air cylinder is installed above one side of the first support arm. According to the long-distance coal mine excavator arm, an oil storage cavity, a reset spring, a telescopic rod, an oil outlet, a leakage-proof plug and a push rod are arranged, when lubricating oil needs to be added to a threaded sleeve and a screw rod, a user starts a motor, the motor works to drive the screw rod to rotate, the screw rod rotates to drive the threaded sleeve to move, and meanwhile, the threaded sleeve drives the push rod to move upwards; after the push rod moves upwards and extends into the oil outlet, the leakage-proof plug can be pushed to move upwards, the leakage-proof plug moves upwards to extrude the telescopic rod and the reset spring, and the reset spring is stressed and compressed, the telescopic rod is stressed and contracted; and after the leakage-proof plug is moved out of the oil outlet, the lubricating oil in the oil storage cavity can flow into the screw rod and the threaded sleeve through the oil outlet, so that the threaded sleeve and the screw rod can be lubricated, and the rusting rate of the screw rod and the threaded sleeve is reduced.

Description

technical field [0001] The invention relates to the field of excavator arms, in particular to a long-distance coal mine excavator arm. Background technique [0002] There are many types of coal mining methods. The coal mining methods used by major coal-producing countries in the world are generally divided into two categories: wall type and pillar type. There is a big difference; according to different mine geology and technical conditions, different coal mining systems can be matched with coal mining processes to form a variety of coal mining methods. For example, under different geological and technical conditions, you can Longwall coal mining method, pillar coal mining method or other coal mining methods are adopted, and longwall and pillar coal mining methods are very different in coal mining system and coal mining technology, so it can be considered that: coal mining method is mining Coal technology and mining roadway layout are composed of two parts; [0003] Coal be...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a long-distance coal mine excavator arm in order to solve the problem that it is inconvenient for the user to add lubricating oil to the surface of the threaded sleeve and the screw rod, and the bucket on the excavator arm may collide with the staff.

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