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Rotary support sealing type plug and sealing method

A slewing bearing and sealing technology, which is applied in the direction of bearing components, shafts and bearings, wind turbine components, etc., can solve the problems of aggravating the friction between balls and raceways, damage of sealing rings, and affecting service life, so as to prevent outflow, good The effect of seal clogging

Active Publication Date: 2012-08-01
昆山德系智能装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main method for slewing bearings to prevent steel balls from falling out is to use ordinary plugging. Although it can play a basic leak-proof role, during the operation of the slewing bearing, if the internal lubricating oil is too high due to the temperature rise, it will be damaged. Lubricating oil will leak from the gap between the clogged and clogged holes. In the long run, the reduction of lubricating oil will increase the friction between the ball and the raceway, affecting its service life. At the same time, the sealing groove is processed on the conventional clogged surface and the sealing ring is placed, but due to the sealing To prevent lubricating oil from leaking, the outer diameter of the ring needs to be larger than the outer diameter of the blockage. In this case, it will often cause damage to the sealing ring during installation and cannot be reused.

Method used

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  • Rotary support sealing type plug and sealing method
  • Rotary support sealing type plug and sealing method
  • Rotary support sealing type plug and sealing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preferred embodiments of the present invention are:

[0026] See attached figure 2 And attached image 3 , The sealed plug includes a plug body 1, an elastic sealing ring 2, a guide pin 3, a guide pin push bolt 4, a spring ring 5, a guide pin push bolt hole 6, a positioning pin hole 7, and a plug front 8.

[0027] A seal groove is arranged on the surface of the plug body 1, and a spring ring 5 and an elastic seal ring 2 are installed in the seal groove. Three guide holes at 120° are drilled on the plug body 1, and guide pins 3 are arranged in the guide holes. The guide holes lead to the center of the plug body in the radial direction, and the three evenly distributed guide holes can make the expansion force more uniform. Drill a hole with a suitable diameter on the end face of the plugging body and tap the thread. This hole is the guide pin push bolt hole 2, and the angle between the needle push bolt hole 2 and the guide hole is 90°. The guide pin pushes the bolt ho...

Embodiment 2

[0033] A sealing method for slewing bearing plugging. A sealing groove is provided on the surface of the plugging body, and a sealing ring is installed in the sealing groove. The outer diameter of the sealing ring under normal conditions is smaller than the diameter of the cylindrical surface. There is a hole extending to the end face of the plug, and a guide pin and a guide pin push bolt are arranged in the hole. For radial movement, sealing of the sealing ring is achieved by internally pressing the sealing ring in the bore.

[0034] When it is installed, the shearing of the plugging cylinder and the plugging hole will not destroy the sealing ring, and after installation, the sealing ring will be spun to achieve sealing.

[0035] The specific structure of the sealing method is realized by a displacement transmission structure composed of a sealed plugging body, a guide pin pushing bolt, a guide pin, a spring ring, and an elastic sealing ring.

Embodiment 3

[0037] Adopt the sealing method of the sealing type plugging of embodiment 1, concrete steps are:

[0038] 1. Before plugging installation: adjust the guide pin to push the bolt to ensure that the outer diameter of the sealing ring is smaller than the diameter of the cylinder under normal conditions;

[0039] 2. After the plug is installed: After putting in the plug, use a screwdriver to tighten the guide pin push bolt, and the inside will convert the axial movement of the guide pin into radial motion through the tapered surface and press the sealing ring to achieve sealing.

[0040] This method can not only prevent the outflow of lubricating oil after sealing, but also prevent the elastic sealing ring from being damaged by the shearing force of blocking and blocking holes during installation.

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Abstract

The invention discloses a rotary support sealing type plug and a sealing method. The plug comprises a plug body, wherein a sealing groove is arranged on the surface of the plug body, a sealing ring is arranged in the sealing groove, at least one guide hole communicated to the middle part of the plug body is arranged on the plug body in a part corresponding to the sealing groove, a guide needle is arranged in the guide hole, the end part of the guide needle positioned in the middle of the plug body is a conical surface, a guide needle pushing screw bolt hole is arranged on the plug body, a guide needle pushing screw bolt is arranged in the guide needle pushing screw bolt hole, the end surface of the guide needle pushing screw bolt is a conical surface, and the conical surface is matched with the conical surface of the guide needle. According to the method, a hole extending to the end surface of the plug is arranged on the plug body in the part corresponding to the sealing ring, and the pressure is exerted on the sealing ring inside the hole from the inner side, so the sealing of the sealing ring is realized. The plug can be perfectly sealed, lubricating oil is prevented from flowing out, meanwhile, the elastic sealing ring can be conveniently prevented from being damaged by shearing force of the plug and the plug hole during the installation, and in addition, the repeated dismounting, the repeated mounting and the repeated use can be realized.

Description

[0001] technical field [0002] The invention relates to the field of slewing bearings for wind power generation, in particular to a sealed plugging and sealing method for preventing oil leakage. Background technique [0003] At present, the main method for slewing bearings to prevent steel balls from falling out is to use ordinary plugging. Although it can play a basic leak-proof role, during the operation of the slewing bearing, if the internal lubricating oil is too high due to the temperature rise, it will be damaged. Lubricating oil will leak from the gap between the clogged and clogged holes. In the long run, the reduction of lubricating oil will increase the friction between the ball and the raceway, affecting its service life. At the same time, the sealing groove is processed on the conventional clogged surface and the sealing ring is placed, but due to the sealing To prevent lubricating oil from leaking, the outer diameter of the ring needs to be larger than the out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/76F03D11/00
CPCY02E10/722Y02E10/72
Inventor 克劳德﹒亨利安周翔王喜兵车建国于力
Owner 昆山德系智能装备有限公司
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