An automatic lubricating device for a boom, a crane and a grease filling method thereof

Abstract

The invention discloses a hoisting arm automatic lubricating device, a crane composed of the hoisting arm automatic lubricating device and a crane lubricating grease filling method. The automatic lubricating device comprises a butt joint device and a grease filling device, the butt joint device is arranged on a telescopic oil cylinder of a hoisting arm, and a first butt joint connector is arrangedat the end of the butt joint device. Second butt joint connectors are arranged at the arm tails of all arm sections of the hoisting arm correspondingly, the first butt joint connector is matched withthe second butt joint connectors, and a filling opening is formed in the grease filling device and connected with the first butt joint connector through a grease delivery pipe. The second butt jointconnectors are connected with sliding blocks between the arm sections of the hoisting arm through grease delivery pipes, and lubricating channels are formed in the sliding blocks. The crane comprisesa crane body, the hoisting arm composed of the multiple arm sections is arranged on the crane body, and the hoisting arm automatic lubricating device is connected to the sliding blocks and the telescopic oil cylinder. According to the hoisting arm automatic lubricating device, the crane composed of the hoisting arm automatic lubricating device and the crane lubricating grease filling method, in the process of normal stretching out and drawing back of the hoisting arm, lubricating grease filling can be achieved, the operation is easy and convenient, the efficiency is high, lubricating grease filling belongs to full-process filling, the grease filling quantity is sufficient, and the lubricating effect is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of lifting equipment, and in particular relates to an automatic lubricating device for a lifting arm, a crane and a lubricating grease filling method thereof. Background technique [0002] During the telescopic process of the boom of the crane, the friction performance is mainly improved by the lubricating grease applied on the boom, and the stability of the boom is improved. Poor lubrication results in increased telescopic thrust, which affects the lightweight design of the telescopic cylinder, and also affects the stability of the telescopic cylinder, which is one of the important factors that cause telescopic vibration and noise. [0003] The telescopic boom is composed of multiple sections, the main body has a cylindrical structure, and each section is set together, and the relative movement is realized through the internal telescopic cylinder. Nylon sliders are used as the medium between each section a...

AI Technical Summary

Problems solved by technology

At the same time, the increase of telescopic resistance also highlights the problem of telescopic stability

[0004] The existing technology adopts the single-point application method. After the arm tail slider passes through a short period, the fixed-point filling grease will be exhausted, and most of the telescopic stroke will not be replenished.

At the same time, opening holes is a loss to the strength of the boom, and opening multiple sets of holes has no practical significance

The whole filling process is complicated and the efficiency is extremely low

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