CN205297766U

CN205297766U - Labyrinth bent axle sealing mechanism

Info

Publication number: CN205297766U
Application number: CN201520940122.9U
Authority: CN
Inventors: 张勇; 朱树林; 高申德; 梅加化
Original assignee: Anqing CSSC Diesel Engine Co Ltd
Current assignee: Anqing CSSC Diesel Engine Co Ltd
Priority date: 2015-11-23
Filing date: 2015-11-23
Publication date: 2016-06-08
Anticipated expiration: 2025-11-23

Abstract

The utility model discloses a labyrinth bent axle sealing mechanism, it includes bent axle, rear end cap and oil pan, rear end cap and oil pan fixed connection, horizontal setting of bent axle put at the inside central point of rear end cap, the rear end cap in be equipped with rear end cap oil extraction ring, rear end cap oil extraction intra -annular side have a sealing mechanism, this sealing mechanism including the labyrinth ring that sets up in the bent axle outside, set up at a plurality of oil drain hole of rear end cap oil extraction intra -annular portion and set up at the inside oil scupper of rear end cap, labyrinth ring inboard through driving key and bent axle fixed connection, wherein labyrinth ring inboard with the bent axle outside combination department be equipped with O type circle, the oil pan is connected to the oil scupper lower extreme. There is a double seal structure in this mechanism, and sealed effectual, the security is high, can effectively prevent the problem that machine oil exosmoses along the bent axle.

Description

A kind of labyrinth type crankshaft seal mechanism

Technical field

This utility model relates to a kind of sealing mechanism, more particularly, it relates to a kind of labyrinth type crankshaft seal mechanism.

Background technology

Electromotor is when high speed operation, its each transmission component all rotates together, throwing away substantial amounts of machine oil, machine oil very easily exosmoses along bent axle axial direction, and general encapsulating method is to adopt disc and oil return thread mechanism, but these structures still also exist oil leakage phenomenon, causing low on fuel in electromotor, oil lubricating effect declines, transmission component abrasion aggravation, shorten service life of aeroengine, affect automotive performance.

Utility model content

Technical problem to be solved in the utility model is in that to provide a kind of labyrinth type crankshaft seal mechanism, and there are two resealing structures, good sealing effect in this mechanism, and security reliability is high, it is possible to effectively prevent the problem that machine oil exosmoses along bent axle.

Technical problem to be solved in the utility model realizes by the following technical solutions.

A kind of labyrinth type crankshaft seal mechanism, it includes bent axle, rear end cap and oil sump, described rear end cap and the fixing connection of oil sump, described bent axle is horizontally installed on rear end cap inner hub location, rear end cap oil extraction ring it is provided with in described rear end cap, sealing mechanism is had inside described rear end cap oil extraction ring, this sealing mechanism includes the labyrinth ring being arranged on outside bent axle, it is arranged on several outages within rear end cap oil extraction ring and is arranged on the oil scupper within rear end cap, it is connected by driving key and bent axle are fixing inside described labyrinth ring, wherein inside labyrinth ring and bent axle outside junction be provided with O, described oil scupper lower end connects oil sump.

Further, outside described labyrinth ring, projection partial cross sectional is in the shape of the letter V shape.

Further, described outage has three.

When electromotor runs, when crankshaft high-speed rotates, a large amount of machine oil throw away, and are first that the O between labyrinth ring and bent axle seals, it is prevented that lubricating oil leakage is outside electromotor, then major part machine oil becomes gas along with the rising of temperature, the V-shape of labyrinth ring can make as far as possible many machine oil steam enter oil sump, and a small amount of machine oil enters on rear end cap oil extraction ring along labyrinth ring wall, and at this moment machine oil is due to the effect entrance outage of centrifugal force, in the last oil scupper reaching rear end cap again, flow into oil sump.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

This utility model adopts double sealing structure, is first that O seals, and its simple in construction has self sealing action, and sealing property is reliable, and friction of motion resistance is little, and the occasion installation being suitable for pressure alternation is changed all very easy; Then rear end cap oil duct and bent axle adopt labyrinth sealing, increase lubricating oil leakage path and lubricating oil leakage frictional force, thus reducing dielectric loss, it is ensured that remaining machine oil does not leak out electromotor, and safety is reliable, good sealing effect.

Accompanying drawing explanation

Fig. 1 is this utility model and rear end cap, oil sump and crank position schematic diagram;

Fig. 2 is A place this utility model enlarged diagram;

In figure: 1, rear end cap; 2, rear end cap oil extraction ring; 3, bent axle; 4, oil sump; 5, labyrinth ring; 6, outage; 7, O; 8, oil scupper.

Detailed description of the invention

For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with being specifically illustrating, this utility model is expanded on further.

As depicted in figs. 1 and 2, a kind of labyrinth type crankshaft seal mechanism, it includes bent axle 3, rear end cap 1 and oil sump 4, rear end cap 1 and the fixing connection of oil sump 4, bent axle 3 is horizontally installed on rear end cap 1 inner hub location, rear end cap oil extraction ring 2 it is provided with in rear end cap 1, sealing mechanism is had inside rear end cap oil extraction ring 2, this sealing mechanism includes the labyrinth ring 5 being arranged on outside bent axle 3, it is arranged on several outages 6 within rear end cap oil extraction ring 2 and is arranged on the oil scupper 8 within rear end cap 1, wherein it is connected by driving key is fixing with bent axle 3 inside labyrinth ring 5, and inside labyrinth ring 5 and bent axle 3 outside junction be provided with O 7, oil scupper 8 lower end connects oil sump 4.

When the engine operates, bent axle 3 high-speed rotation, machine oil splashes, major part machine oil becomes gas along with the rising of temperature, gap location between O 7 sealing labyrinth ring 5 and bent axle 3, prevent lubricating oil leakage, machine oil steam is slowed down by labyrinth ring 5, decompression, it is flowed in oil sump 4, a small amount of machine flows into rear end cap oil extraction ring 2 along labyrinth ring 5 wall, owing to bent axle 3 is when high speed rotating, machine oil only to be limited by the effect of centrifugal force and towards radial diffusion, so the machine oil flowed into can enter in the oil scupper 8 on rear end cap 1 along the outage 6 in rear end cap oil extraction ring 2, finally enter oil sump 4.

Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described. Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description is that principle of the present utility model is described; under the premise without departing from this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements both fall within the scope of claimed this utility model. This utility model claims scope and is defined by appending claims and equivalent thereof.

Claims

1. a labyrinth type crankshaft seal mechanism, it includes bent axle, rear end cap and oil sump, described rear end cap and the fixing connection of oil sump, described bent axle is horizontally installed on rear end cap inner hub location, it is characterized in that: in described rear end cap, be provided with rear end cap oil extraction ring, sealing mechanism is had inside described rear end cap oil extraction ring, this sealing mechanism includes the labyrinth ring being arranged on outside bent axle, it is arranged on several outages within rear end cap oil extraction ring and is arranged on the oil scupper within rear end cap, it is connected by driving key and bent axle are fixing inside described labyrinth ring, wherein inside labyrinth ring and bent axle outside junction be provided with O, described oil scupper lower end connects oil sump.

2. a kind of labyrinth type according to claim 1 crankshaft seal mechanism, it is characterised in that: outside described labyrinth ring, projection partial cross sectional is in the shape of the letter V shape.

3. a kind of labyrinth type according to claim 1 crankshaft seal mechanism, it is characterised in that: described outage has three.