Rotating joint and environmental sanitary vehicle with same

Abstract

The invention discloses a rotating joint which comprises a core body (10) and a shell (20) which is sleeved outside the core body; the shell and the core body can rotate relatively; an annular groove is formed between the core body and the shell, and is communicated with the external part of the rotating joint through a first channel (21) on the shell and a second channel (14) in the core body; the annular groove comprises a first annular groove (11), a second annular groove (12) and an isolation channel (13) arranged between the first annular groove (11) and the second annular groove (12); and the isolation groove is communicated with the external part of the shell. The invention also provides an environmental sanitary vehicle with the rotating joint. According to the invention, through the arrangement of the isolation groove between the core body and the shell, liquids leaked from the first annular groove or the second annular groove flow into the isolation groove, thus the problem of liquid communication in the first annular groove and the second annular groove is solved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a rotary joint and a sanitation vehicle comprising the rotary joint. Background technique [0002] The swivel joint is a multi-channel rotary oil circuit connection device, which is suitable for construction machinery equipped with a slewing support structure. [0003] Common rotary joints include hydraulic hydraulic joints and water-oil dual-purpose rotary joints. The former is widely used in construction machinery such as excavators and hydraulic cranes to transmit pressure oil; the latter is mostly used in special vehicles such as fire trucks and aerial work vehicles to complete the transmission of pressure oil, water and electrical signals on the upper and lower platforms. transmission between. [0004] CN 201198577Y discloses an eight-channel hydraulic central rotary joint. The rotary joint includes a rotary body, a rotary shaft and an end cover. The rotary shaft is ax...

AI Technical Summary

Problems solved by technology

Corrosive liquids such as water and washing liquid will cause the shell and core of the rotary joint to rust, generate iron filings and other impurities, scratch the seal, and cause the liquid in the rotary joint to overflow and leak to other oil passages. And cause the emulsification of hydraulic oil and the pollution of the entire hydraulic system, corrosion of hydraulic components, component wear, seal failure, etc., and eventually lead to various hydraulic failures and hydraulic component damage

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