CN213953691U

CN213953691U - Nozzle ring of turbocharger

Info

Publication number: CN213953691U
Application number: CN202023001730.3U
Authority: CN
Inventors: 曾加萍; 何松建
Original assignee: Suzhou Nuoxun Auto Parts Co ltd
Current assignee: Suzhou Nuoxun Auto Parts Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-08-13
Anticipated expiration: 2030-12-14

Abstract

The utility model relates to a turbocharger nozzle ring, it include mounting disc, dial ring and set up respectively in a plurality of blades and shift fork of mounting disc both sides, dial the ring and pass through the shift fork drives the blade is rotatory, be provided with a plurality of mounting holes on the mounting disc, it is a plurality of the even interval distribution in mounting hole week, the blade with shift fork one-to-one sets up, the blade is with corresponding the shift fork all is in through a blade round pin hub connection, and every blade round pin axle all corresponds the setting in the mounting hole of mounting disc, blade round pin axle surface is equipped with inside sunken dead slot of keeping away. The utility model discloses a set up at blade round pin axle surface and keep away the dead slot, reduce the area of contact of blade round pin axle and mounting hole inner wall, reduce the friction, improve the life of mounting disc, blade round pin axle.

Description

Nozzle ring of turbocharger

Technical Field

The utility model relates to a turbo charger technical field, in particular to turbo charger nozzle cascade.

Background

The nozzle ring is installed in a turbocharger and used for controlling the amount of exhaust gas entering a turbine wheel so as to control the rotating speed of the turbocharger, when the shifting ring rotates, the shifting ring drives the shifting fork to rotate, the shifting fork drives the blades to rotate through the pin shaft during rotation, and the angle of the blades can be changed and the air flow section can be adjusted through rotation of the blades so as to adjust the air inflow.

Chinese patent No. CN205918451U discloses a nozzle ring for a turbocharger, in which a hole sleeve is fixedly disposed in a mounting hole of a mounting plate, and then the hole sleeve is fixed in the mounting hole of the mounting plate, because the aperture of a second cylindrical hole section of the hole sleeve is larger than that of a first cylindrical hole section, after a blade pin shaft is mounted in the hole sleeve, the blade pin shaft only contacts with the inner walls of the two first cylindrical hole sections, and the blade pin shaft does not contact with the inner walls of the second cylindrical hole sections, thereby reducing the contact area between the blade pin shaft and the hole sleeve, and reducing friction; but when making the nozzle cascade, need make the pot head earlier, it is comparatively loaded down with trivial details to produce.

Therefore, it is desirable to provide a turbocharger nozzle ring to solve the above problems of the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a reducible blade pivot and mounting disc friction damage, increase of service life's turbo charger nozzle cascade.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a turbocharger nozzle ring, its include the mounting disc, dial the ring and set up respectively in a plurality of blades and the shift fork of mounting disc both sides, dial the ring and pass through the shift fork drives the blade is rotatory, be provided with a plurality of mounting holes on the mounting disc, it is a plurality of the even interval distribution in mounting hole week, the blade with the shift fork one-to-one sets up, the blade with corresponding the shift fork all is through a blade round pin hub connection, and every blade round pin hub all corresponds the setting and is in the mounting hole of mounting disc, blade round pin hub surface is equipped with inside sunken dead slot of keeping away.

The clearance groove is a continuous spiral structure arranged on the outer surface of the blade pin shaft.

The clearance grooves are a plurality of annular grooves which are circumferentially arranged on the outer surface of the blade pin shaft, and the annular grooves are distributed on the outer surface of the blade pin shaft at equal intervals.

The clearance grooves are a plurality of vertical grooves axially formed in the outer surface of the blade pin shaft, and the vertical grooves are distributed on the outer surface of the blade pin shaft at equal intervals.

The blade pin shaft comprises a supporting column fixedly connected with the blade and a stamping end connected with the tail end of the supporting column, the supporting column penetrates through the mounting hole, and the clearance groove is formed in the outer surface of the supporting column.

The shifting ring deviates from be provided with a plurality of mounting grooves on the terminal surface of mounting disc, a plurality of mounting grooves are followed the circumference direction interval of shifting ring sets up, and the equal pivoted setting of one end of every shift fork is in corresponding in the mounting groove, the other end tip of shift fork be equipped with the corresponding round hole of punching press end, the punching press end passes the round hole riveting of shift fork is in on the shift fork, will the blade with the shift fork is fixed.

The mounting disc is close to be provided with a plurality of circumference interval distribution's location lug on the terminal surface of stirring the ring, every location lug all supports stir the internal perisporium of ring.

The abutting surface of each positioning lug is an arc surface which is matched with the inner peripheral wall of the dial ring, and the abutting surface of each positioning lug abuts against the inner peripheral wall of the dial ring.

Compared with the prior art, the beneficial effects of the utility model are that: the clearance groove is formed in the surface of the blade pin shaft, so that the contact area between the blade pin shaft and the inner wall of the mounting hole is reduced, friction is reduced, and the service life of the mounting disc and the service life of the blade pin shaft are prolonged.

Drawings

FIG. 1 is a schematic view of a nozzle ring structure of a turbocharger of the present invention;

FIG. 2 is a front view of the nozzle ring of the turbocharger of FIG. 1;

FIG. 3 is a cross-sectional view of the nozzle ring of the turbocharger of FIG. 1;

FIG. 4 is a schematic view of the structure of a blade and a blade pin shaft according to the first embodiment of the present invention;

FIG. 5 is a schematic view of a second embodiment of the present invention illustrating a blade and a blade pin structure;

FIG. 6 is a schematic view of a third embodiment of the present invention illustrating a blade and a blade pin structure;

fig. 7 is a schematic view of the structure of the mounting plate in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

First embodiment

Referring to fig. 1 to 4, the present invention is a nozzle ring of a turbocharger, which comprises a mounting plate 1 and a dial ring 2, set up respectively in a plurality of blades 3 and the shift fork 4 of mounting disc 1 both sides, dial ring 2 and be on a parallel with the setting of mounting disc 1 and with the shift fork 4 homonymy, dial ring 2 and drive blade 3 rotation through shift fork 4, be provided with a plurality of mounting hole 11 on the mounting disc 1, the even interval distribution of a plurality of mounting hole 11 circumference, a plurality of mounting hole 11 all run through two surfaces of mounting disc 1, the even interval setting of 4 circumference of shift fork sets up on a terminal surface of mounting disc 1, the even interval setting of 3 circumference of blade sets up on another terminal surface of mounting disc 1, blade 3 sets up with shift fork 4 one-to-one, blade 3 all is connected through a blade round pin axle 5 with corresponding shift fork 4, every blade round pin axle 5 all corresponds the setting in mounting hole 11 of mounting disc 1, blade round pin axle 5 surface is equipped with inside sunken groove 51 of keeping away.

Referring to fig. 4, the clearance groove 51 is a continuous spiral structure formed on the outer surface of the blade pin 5.

Referring to fig. 3 and 4, the blade pin 5 includes a supporting pillar 52 fixedly connected to the blade 3 and a stamping end 53 connected to the end of the supporting pillar 52, the supporting pillar 52 is inserted into the mounting hole 11, and the clearance groove 51 is disposed on the outer surface of the supporting pillar 52.

Referring to fig. 1, a plurality of mounting grooves 21 are formed in an end surface of the toggle ring 2 facing away from the mounting plate 1, and the mounting grooves 21 are arranged at intervals along the circumferential direction of the toggle ring 2; the shifting forks 4 are arranged in one-to-one correspondence with the mounting grooves 21, and one end of each shifting fork 4 is rotatably arranged in the corresponding mounting groove 21. Referring to fig. 3 and 4, a circular hole 41 corresponding to the punching end 53 is formed in the other end of the shifting fork 4, and the punching end 53 penetrates through the circular hole 41 of the shifting fork 4 and is riveted on the shifting fork 4 to fix the blade 3 and the shifting fork 4.

Referring to fig. 1 and 7, a plurality of positioning protrusions 12 are circumferentially spaced on an end surface of the mounting plate 1 close to the dial ring 2, each positioning protrusion 12 abuts against an inner circumferential wall of the dial ring 2, and the plurality of positioning protrusions 12 radially position the dial ring 2. The abutting surface of each positioning convex block 12 is an arc surface matched with the inner peripheral wall of the dial ring 2, the abutting surface of each positioning convex block 12 abuts against the inner peripheral wall of the dial ring 2, and the contact area between the positioning convex block 12 and the inner wall of the dial ring 2 is larger, so that the positioning convex block 12 can position the dial ring 2 more stably.

Second embodiment

The difference from the first embodiment is that: referring to fig. 5, the clearance groove 51 is a plurality of annular grooves 511 circumferentially formed on the outer surface of the blade pin 5, and the plurality of annular grooves are equally spaced on the outer surface of the blade pin 5.

Third embodiment

The difference from the first embodiment is that: referring to fig. 6, the clearance groove 51 is a plurality of vertical grooves 512 axially formed on the outer surface of the blade pin 5, and the vertical grooves are equally spaced on the outer surface of the blade pin 5.

The utility model discloses a set up in 5 surfaces of blade round pin axle and keep away dead slot 51, reduce the area of contact of blade round

pin axle

5 and 11 inner walls of mounting hole, reduce the friction, improve mounting disc 1, blade round pin axle 5's life.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A turbocharger nozzle ring which characterized in that: the blade-driven blade assembly comprises a mounting disc, a poking ring, a plurality of blades and shifting forks, wherein the blades and the shifting forks are arranged on two sides of the mounting disc respectively, the poking ring drives the blades to rotate through the shifting forks, a plurality of mounting holes are formed in the mounting disc and are distributed at intervals in the circumferential direction, the blades and the shifting forks are arranged in a one-to-one correspondence mode, the blades and the shifting forks are connected through blade pin shafts, each blade pin shaft is correspondingly arranged in the mounting holes of the mounting disc, and the outer surfaces of the blade pin shafts are provided with inwards-sunken clearance grooves.

2. The turbocharger nozzle ring of claim 1, wherein: the clearance groove is a continuous spiral structure arranged on the outer surface of the blade pin shaft.

3. The turbocharger nozzle ring of claim 1, wherein: the clearance grooves are a plurality of annular grooves which are circumferentially arranged on the outer surface of the blade pin shaft, and the annular grooves are distributed on the outer surface of the blade pin shaft at equal intervals.

4. The turbocharger nozzle ring of claim 1, wherein: the clearance grooves are a plurality of vertical grooves axially formed in the outer surface of the blade pin shaft, and the vertical grooves are distributed on the outer surface of the blade pin shaft at equal intervals.

5. The turbocharger nozzle ring of claim 2, 3 or 4, wherein: the blade pin shaft comprises a supporting column fixedly connected with the blade and a stamping end connected with the tail end of the supporting column, the supporting column penetrates through the mounting hole, and the clearance groove is formed in the outer surface of the supporting column.

6. The turbocharger nozzle ring of claim 5, wherein: the shifting ring deviates from be provided with a plurality of mounting grooves on the terminal surface of mounting disc, a plurality of mounting grooves are followed the circumference direction interval of shifting ring sets up, and the equal pivoted setting of one end of every shift fork is in corresponding in the mounting groove, the other end tip of shift fork be equipped with the corresponding round hole of punching press end, the punching press end passes the round hole riveting of shift fork is in on the shift fork, will the blade with the shift fork is fixed.

7. The turbocharger nozzle ring of claim 1, wherein: the mounting disc is close to be provided with a plurality of circumference interval distribution's location lug on the terminal surface of stirring the ring, every location lug all supports stir the internal perisporium of ring.

8. The turbocharger nozzle ring of claim 7, wherein: the abutting surface of each positioning lug is an arc surface which is matched with the inner peripheral wall of the dial ring, and the abutting surface of each positioning lug abuts against the inner peripheral wall of the dial ring.