Hydraulic swivel joint not prone to oil leakage

A technology for rotary joints and oil leakage, applied in the direction of pipe components, etc., can solve the problems of easy oil leakage of rotary joints, poor sealing performance, affecting the performance of rotary joints, etc., and achieve the effect of ensuring performance

Inactive Publication Date: 2013-12-04
JIANGSU CHANGLING HYDRAULIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the sealing performance between the rotary joint and the outside world in the past is poor, and the dust from the outside is easy to get into the rotary joint, which affects the performance of the rotary joint, and the oil in the rotary joint is also easy to leak out. Rotation also has an effect

Method used

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  • Hydraulic swivel joint not prone to oil leakage

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Embodiment Construction

[0011] see figure 1 , the present invention relates to a hydraulic rotary joint not prone to oil leakage, comprising a rotary body 1 and a rotary shaft 2, the bottom end of the rotary shaft 2 is axially inserted from the top end of the rotary body 1, and the top end of the rotary shaft 2 is exposed on the The rotary body 1, the rotary body 1 is connected with the bottom of the rotary shaft 2 through the cover plate 3, the bottom of the oil hole of the rotary shaft 2 is longitudinally provided with a cone plug 4, and an O-shaped plug is arranged between the cover plate 3 and the cone plug 4 Ring I5, between the lower end of the rotary body 1 and the lower end of the rotary shaft 2, a shaft retaining ring 6 and a retaining ring 7 are provided, and a rotary sealing ring 8 and O Shaped ring II9, a dust-proof cover 10 is set on the periphery of the gap between the top of the revolving body 1 and the revolving shaft 2, and a dust-proof ring 11 is arranged between the lower end of th...

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Abstract

The invention relates to a hydraulic swivel joint not prone to oil leakage. The hydraulic swivel joint not prone to oil leakage is characterized by comprising a swivel body (1) and a swivel shaft (2), wherein the bottom end of the swivel shaft (2) is inserted through the top end of the swivel body (1) in the axial direction, the top end of the swivel shaft (2) is exposed out of the swivel body (1), a gap between the top end of the swivel body (1) and the swivel shaft (2) is sleeved with a dust-proof sleeve (10), and a dust-proof ring (11) is arranged between the lower end of the dust-proof sleeve (10) and the swivel body (1). When the dust-proof sleeve of the hydraulic swivel joint is used in cooperation with the dust-proof ring of the hydraulic swivel joint, external dust cannot easily enter the hydraulic swivel joint not prone to oil leakage, oil cannot leak from the interior of the hydraulic swivel joint not prone to oil leakage, and thus the performance of the hydraulic swivel joint not prone to oil leakage is ensured.

Description

technical field [0001] The invention relates to a hydraulic rotary joint not prone to oil leakage, which is mainly used in the hydraulic system of crawler excavators and belongs to the technical field of engineering machinery. Background technique [0002] The upper and lower parts of the crawler excavator need to be turned, and the middle part is connected by a turning joint. The rotary joint is composed of a rotary body, a rotary shaft and a cover. When in use, the slewing body is fixed to the slewing lower platform of the crawler excavator, and the mounting plate on the slewing shaft is connected to the slewing support of the crawler excavator. turn. [0003] However, the sealing performance between the rotary joint and the outside world in the past is poor, and the dust from the outside is easy to get into the rotary joint, which affects the performance of the rotary joint, and the oil in the rotary joint is also easy to leak out. Turning also had an effect. Content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L39/06
Inventor 夏泽民张爱军陈酉冰徐勤军潘逸明高海波
Owner JIANGSU CHANGLING HYDRAULIC CO LTD
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