CN104295325A

CN104295325A - Variable section nozzle ring for turbocharger

Info

Publication number: CN104295325A
Application number: CN201410468985.0A
Authority: CN
Inventors: 吴学文; 黎俊韬; 林春兰; 董忠荣; 韩睿佳
Original assignee: PINGXIANG DEBO TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: PINGXIANG DEBO TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2014-09-16
Filing date: 2014-09-16
Publication date: 2015-01-21
Anticipated expiration: 2034-09-16
Also published as: CN104295325B

Abstract

The invention discloses a variable section nozzle ring for a turbocharger. The variable section nozzle ring comprises an installation disk, a shifting disk, a plurality of pin shafts and a plurality of shifting forks. The installation disk comprises a cylindrical portion and an annular portion. The annular portion extends outwards in the radial direction from one end of the cylindrical portion. The shifting disc is rotationally arranged on the cylindrical portion in a sleeving mode. The pin shafts are connected to the shifting disk. One end of each shifting fork and one corresponding blade are connected and rotate synchronously, and the other end of each shifting fork is provided with a gap. A sliding sleeve is rotationally arranged on each pin shaft in a sleeving mode. The sliding sleeves are sleeved with the shifting forks in a one-to-one corresponding mode through the gaps. The sliding sleeves can freely rotate and slide in the gaps in the shifting forks. The sliding sleeves are matched with the gaps in shape. The outer walls of the sliding sleeves are approximately square. The contact surfaces between the outer walls of the sliding sleeves and the two side walls of the gaps in the shifting forks are flat surfaces. Abrasion is reduced in the relative sliding process of the pin shafts and the shifting forks.

Description

A kind of turbosupercharger nozzle ring capable of changing cross sections

Technical field

The present invention relates to turbo-charger technical field, is specifically a kind of turbosupercharger nozzle ring capable of changing cross sections.

Background technique

Nozzle ring component with variable cross section is the critical component in current advanced variable geometry turbocharger, the Chinese patent being 201120544236.3 as the patent No. discloses a kind of nozzle ring component with variable cross section, in its technological scheme, pin is fixed on shifting disc, shift fork is enclosed within pin, the afterbody of blade is connected with shift fork, like this, when shifting disc rotates by external force, pin will drive shift fork to rotate, shift fork drives blade rotary then, to change blade angle, regulate flow area, when pin drives shift fork to rotate, relative sliding can be produced between pin and shift fork, and be linear contact lay between pin and shift fork, area of contact is less, like this, when relative sliding, pin and shift fork are easier to be worn, pin and shift fork wear and tear comparatively greatly, the contacting point of pin and shift fork will be made to be out of shape, will make pin and shift fork cannot normally transmission between the two, this nozzle ring capable of changing cross sections cannot normally be used, bring potential safety hazard, in addition, in its technological scheme, shifting disc is placed in the restriceted envelope of mounting disc and position limit pin formation, and position limit pin needs to push down with the spiral case of turbosupercharger to position, and between spiral case and position limit pin, there is certain gap, when turbosupercharger high temperature and high speed works, easily cause the axial float of position limit pin, shifting disc will be made to be shifted, shift fork will to be made to depart from shifting disc, this nozzle ring assembly will be made so normally to work.

Summary of the invention

Technical problem to be solved by this invention is, provides a kind of turbosupercharger nozzle ring capable of changing cross sections wearing and tearing less in the process of bearing pin and shift fork relative sliding.

For solving the problems of the technologies described above, turbosupercharger nozzle ring capable of changing cross sections provided by the invention, comprising:

One mounting disc, the annulus that described mounting disc comprises cylindrical portion and extends radially outwardly from one end of cylindrical portion;

One is rotatingly nested with the shifting disc in cylindrical portion;

Multiple bearing pin be connected on shifting disc; And

Multiple shift fork, one end of described shift fork is connected and synchronous axial system one to one with blade, and the other end of shift fork is provided with a breach;

Described each bearing pin is all rotatably equipped with a sliding sleeve, shift fork is nested with on sliding sleeve one to one by breach, sliding sleeve can freely rotate and slide in the breach of shift fork, shape and the breach of sliding sleeve match, the outer wall of sliding sleeve is roughly square, and the surface of contact of the two side of the outer wall of sliding sleeve and the breach of shift fork is plane.

As improvement, described annulus is nested with and is fixed with one for carrying out the limiting gasket of axially locating to shifting disc, the periphery wall of described cylindrical portion is provided with an annular boss, an end face of shifting disc and annular boss offset, and other end and the limiting gasket of shifting disc offset.

After adopting above structure, the present invention compared with prior art, has following advantage:

In the inventive solutions, rotatingly on bearing pin be equipped with a sliding sleeve, shift fork is nested with on sliding sleeve by breach, when bearing pin drives shift fork to rotate, relative sliding is produced between sliding sleeve and shift fork, and the surface of contact between sliding sleeve and shift fork is plane, namely between sliding sleeve with shift fork for face contacts, area of contact is larger, make in the process of sliding sleeve and shift fork relative sliding, sliding sleeve and the wearing and tearing suffered by shift fork less, the contacting point of sliding sleeve and shift fork is made to be not easy abrasion deformation, make the reliable transmission between bearing pin and shift fork higher, make nozzle ring capable of changing cross sections operational safety of the present invention higher.

In addition, axially locating can be carried out to shifting disc by limiting gasket, the annulus of mounting disc can carry out radial location to shifting disc, like this, shifting disc is all reliably located in the axial direction with in radial direction, and when turbosupercharger high temperature and high speed works, shifting disc location is firm, shift fork can be avoided to depart from shifting disc, to ensure the normal use of nozzle ring capable of changing cross sections of the present invention.

Accompanying drawing explanation

Fig. 1 is the sectional view of nozzle ring of the present invention;

Fig. 2 is the side view of Fig. 1.

Wherein, 1, mounting disc; 101, cylindrical portion; 102, annulus; 103, annular boss; 2, shifting disc; 201, drive end; 202, driving pin; 203, active sliding sleeve; 3, shift fork; 301, breach; 4, blade; 5, bearing pin; 6, sliding sleeve; 7, limiting gasket; 8, backing plate; 9, spacer sleeve.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.

Shown in Fig. 1, Fig. 2, turbosupercharger nozzle ring capable of changing cross sections of the present invention comprises mounting disc 1, shifting disc 2, multiple shift fork 3 and multiple bearing pin 5 be connected on shifting disc 2.

The annulus 102 that described mounting disc 1 comprises cylindrical portion 101 and extends radially outwardly from one end of cylindrical portion 101, cylindrical portion 101 and annulus 102 are made of one piece, when installing this nozzle ring capable of changing cross sections, cylindrical portion 101 is inserted in the mounting hole of turbosupercharger fixing.

Shifting disc 2 is rotating to be nested with in cylindrical portion 101, and described annulus 102 is nested with is fixed with one for carrying out the limiting gasket 7 of axially locating to shifting disc 2, that is on the periphery wall of cylindrical portion 101, an annular boss 103 is provided with, annular boss 103 is arranged on the corner between cylindrical portion 101 and annulus 102, one end face and the annular boss 103 of shifting disc 2 offset, other end and the limiting gasket 7 of shifting disc 2 offset, limiting gasket 7 clamping is fixed in cylindrical portion 101, like this, shifting disc 2 is nested with in cylindrical portion 101, shifting disc 2 obtains radial location, and limiting gasket 7 makes shifting disc 2 obtain axially locating, shifting disc 2 is made to obtain axial and radial reliable location while free to rotate.

One end of shifting disc 2 extends radially outwardly and forms drive end 201, drive end 201 is provided with a driving pin 202 axially arranged, rotatingly on driving pin 202 be equipped with an initiatively sliding sleeve 203, the driver part that controller controls is by driving shifting disc 2 to rotate to active sliding sleeve 203 force.

Described shift fork 3 is consistent with blade 4 quantity, blade 4 circumference is evenly distributed on annulus 102, shift fork 3 and blade 4 lay respectively at the both sides of annulus 102, blade 4 and shift fork 3 are arranged one to one, the afterbody of blade 4 welds through annulus 102 and one end of corresponding shift fork 3 or rivets fixing, the top of blade 4 is rotating to be fixed on a backing plate 8, and backing plate 8 is connected with annulus 102 by spacer sleeve 9, the two ends of spacer sleeve 9 are welded with annulus 102 with backing plate 8 or rivet fixing respectively mutually.

The other end of shift fork 3 is provided with a breach 301, and this breach 301 is U-shaped breach, certainly, adopts the breach 301 of other shapes also can.

Bearing pin 5 circumference is uniformly distributed and is axially disposed within shifting disc 2, that is the axis of bearing pin 5 parallels with the axis of shifting disc 2, bearing pin 5 is consistent with shift fork 3 quantity and arrange one to one, each bearing pin 5 is all rotatably equipped with a sliding sleeve 6, the outer wall of sliding sleeve 6 is roughly square, the two side of breach 301 is roughly plane, like this, when shift fork 3 is nested with after on sliding sleeve 6 by breach 301, when shifting disc 2 drives shift fork 3 to rotate by bearing pin 5, (rotation herein refers to that shift fork 3 rotates around connected blade 4, and be with moving vane 4 synchronous axial system), relative sliding is produced between the two side of the outer wall of sliding sleeve 6 and the breach 301 of shift fork 3, the surface of contact of the inwall of the outer wall of sliding sleeve 6 and the breach of shift fork 3 is plane, area of contact is larger, make in the process of sliding sleeve 6 and shift fork 3 relative sliding, the wearing and tearing suffered by inwall of the outer wall of sliding sleeve 6 and the breach 301 of shift fork 3 are less, the contacting point of sliding sleeve 6 and shift fork 3 is made to be not easy abrasion deformation.

Below only apply preferably example with regard to the present invention and made explanation, but can not be interpreted as it is limitations on claims, structure of the present invention can have other to change, and is not limited to said structure.In a word, all various changes done in the protection domain of independent claims of the present invention are all in protection scope of the present invention.

Claims

1. a turbosupercharger nozzle ring capable of changing cross sections, comprising:

One mounting disc (1), the annulus (102) that described mounting disc (1) comprises cylindrical portion (101) and extends radially outwardly from one end of cylindrical portion (101);

One is rotatingly nested with the shifting disc (2) in cylindrical portion (101);

Multiple bearing pin (5) be connected on shifting disc (2); And

Multiple shift fork (3), one end of described shift fork (3) is connected and synchronous axial system one to one with blade (4), and the other end of shift fork (3) is provided with a breach (301);

It is characterized in that:

Described each bearing pin (5) is all rotatably equipped with a sliding sleeve (6), shift fork (3) is nested with on sliding sleeve (6) by breach (301) one to one, sliding sleeve (6) can freely rotate and slide in the breach of shift fork (3) (301), shape and the breach (301) of sliding sleeve (6) match, the outer wall of sliding sleeve (6) is roughly square, and the surface of contact of the two side of the outer wall of sliding sleeve (6) and the breach (301) of shift fork (3) is plane.

2. a kind of turbosupercharger nozzle ring capable of changing cross sections according to claim 1, is characterized in that:

Described annulus (102) is nested with and is fixed with one for carrying out the limiting gasket (7) of axially locating to shifting disc (2).

3. the nozzle ring capable of changing cross sections of a kind of turbosupercharger according to claim 2, is characterized in that:

The periphery wall of described cylindrical portion (101) is provided with an annular boss (103), and an end face and the annular boss (103) of shifting disc (2) offset, and other end and the limiting gasket (7) of shifting disc (2) offset.