CN211230561U - Nozzle ring with high blade controllability - Google Patents

Abstract

A nozzle ring with high blade controllability comprises a poking disc, a mounting disc and a rear cover, wherein a plurality of shaft holes are formed in the mounting disc, a rotatable blade shaft is arranged in each shaft hole, a poking fork is fixed at one end of each blade shaft, blades are fixed at the other end of each blade shaft, and the poking forks and the blades are respectively arranged on two sides of the mounting disc; the poking disc drives the poking fork to move, and the rear cover is arranged on the outer side of the blade; the end face, facing the blades, of the rear cover is provided with a plurality of rolling parts corresponding to the blades, and the rolling parts abut against the blades and enable the blades not to be in contact with the surface of the rear cover. The utility model provides a nozzle cascade, through the setting of rolling member, the face contact who makes between blade and the back lid becomes the point contact, and sliding friction becomes rolling friction, and frictional resistance reduces greatly, has realized the advantage that drive power of drive nozzle cascade reduces, responsiveness improves, has still eliminated the wearing and tearing between blade and the back lid simultaneously, has increased product life.

Description

Nozzle ring with high blade controllability

Technical Field

The utility model belongs to the turbo charger field, concretely relates to a nozzle cascade that blade controllability is high for among turbo charger.

Background

In the prior art, in order to reduce the oil consumption of an automobile and improve the dynamic property of the automobile, a turbocharger is generally adopted to improve the power of an engine. In the design process of the turbocharger for the vehicle, in order to fully exert the efficiency and safety principle of the engine, the designed maximum rotating speed of the turbocharger is necessarily set in the full-load state of the engine, so that in the low-speed working condition of the engine, the rotating speed of the turbocharger is directly caused by low-displacement exhaust gas and is also in the low-speed state, the normal work of the turbocharger is directly influenced, and the working efficiency of the turbocharger in the low-speed state of the engine is reduced. In view of this situation, the current professional manufacturers have specifically designed nozzle ring structures of variable cross-section. The principle of the structure is as follows: when the engine works in a low-speed state, the area of the air outlet of the nozzle ring of the supercharger is reduced, so that the area of the nozzle is reduced and the air pressure is increased at the turbine end in a low-flow state, the working speed of a turbine rotor is improved, the air pressure of the air outlet at the gas compressor end is increased, and the working efficiency of the turbocharger in the low-speed state of the engine is improved.

The variable nozzle ring is used for being installed on the variable nozzle turbocharger, and the opening degree of nozzle blades of the variable nozzle ring is adjusted and controlled through an external control mechanism, so that the flow and the efficiency of the variable nozzle turbocharger are changed. In the current structure, the blade is arranged on the blade shaft, and the end part of the blade is in surface contact with the surface of the rear cover, so that the driving force for driving the blade is required to be large, and the controllability of the blade is poor. When the nozzle ring blade of the turbocharger needs to reach the calibrated opening, the problem that the specified opening cannot be reached or the calibrated opening cannot be reached in time due to large friction force exists, and the working condition is affected. In this case, the driving resistance is mainly derived from friction, and the surface contact between the blade and the back cover is the main friction source, and the existence of this large friction also causes some wear to the blade during long-term use, so that the working accuracy is reduced, and the working efficiency is reduced.

Accordingly, the present application provides further design and improvements to nozzle rings in turbochargers that address some of the problems identified above.

SUMMERY OF THE UTILITY MODEL

To not enough among the above prior art, the utility model provides a nozzle cascade that blade controllability is high for among turbo charger becomes the point contact through with original face contact, becomes rolling friction with original sliding friction, has realized the advantage that the drive power of drive nozzle cascade reduces, responsiveness improves, has still reduced the wearing and tearing between blade and the back lid simultaneously, has increased product life.

In order to solve the above technical problem, the present invention solves the above technical problems.

A nozzle ring with high blade controllability comprises a poking disc, a mounting disc and a rear cover, wherein a plurality of shaft holes are formed in the mounting disc, a rotatable blade shaft is arranged in each shaft hole, a poking fork is fixed at one end of each blade shaft, blades are fixed at the other end of each blade shaft, and the poking forks and the blades are respectively arranged on two sides of the mounting disc; the poking disc drives the poking fork to move, and the rear cover is arranged on the outer side of the blade; the end face, facing the blades, of the rear cover is provided with a plurality of rolling parts corresponding to the blades, and the rolling parts abut against the blades and enable the blades not to be in contact with the surface of the rear cover.

In the prior art, the end face of the blade is generally directly contacted with the surface of the rear cover, the indirect area between the end face of the blade and the surface of the rear cover is large, and in the rotating process of the blade, the blade and the rear cover are in sliding friction and have large friction force, so that the required driving force is large, the responsiveness is poor, and the phenomenon of blocking or incomplete rotation of the blade is easy to occur. In this application, be equipped with the rolling member on the back lid, the blade does not contact with the surface of back lid simultaneously, but supports on the rolling member, consequently removes, rotates the in-process at the blade, be the point contact between it and the rolling member, be rolling friction moreover, frictional force reduces greatly, has reduced drive power and responsiveness and is showing and improve.

In a preferred embodiment, the end surface of the rear cover facing the blade is provided with a plurality of slotted holes corresponding to the blade, the rolling member is arranged in the slotted hole, and the rolling member partially protrudes out of the surface of the rear cover to abut against the blade, so that the blade cannot contact with the surface of the rear cover. In the structure, the rolling parts correspond to the blades one to one, and the rolling parts are placed stably and cannot be separated.

In a preferred embodiment, the position where the rolling member abuts against the blade is coaxial with the blade shaft, and the arrangement mode enables the blade to be stressed stably, so that the blade is high in coaxiality during continuous rotation in use, and cannot be inclined and deviated.

In a preferred embodiment, the rolling members are balls, so that the structure is simple, the rolling performance is high, circumferential full-angle rolling along with the blades can be conveniently carried out, and the phenomenon of clamping cannot occur.

In a preferred embodiment, distance pins are provided between the mounting disc and the back cover for controlling the clearance of the blades between the mounting disc and the back cover.

In a preferred embodiment, be equipped with a plurality of on the dial dish and dial the groove, the outer end of shift fork is arranged in this and is dialled the groove, and in this structure, stir the dish through rotating and can be convenient drive all shift forks and rotate in step, realize the synchronous rotation of all blades, it is convenient to adjust, and the responsiveness is high.

Compared with the prior art, the utility model discloses following beneficial effect has: the nozzle ring has the advantages that sliding friction between the blades and the rear cover is changed into rolling friction between the blades and the rolling parts through the arrangement of the rolling parts, the friction resistance is greatly reduced, the advantages of reduction of driving force and improvement of responsiveness for driving the nozzle ring are achieved, meanwhile, abrasion between the blades and the rear cover is eliminated, and the service life of a product is prolonged.

Drawings

Fig. 1 is a perspective view of a nozzle ring according to the present invention.

Fig. 2 is a second perspective view of the nozzle ring of the present invention.

Fig. 3 is a side view of the nozzle ring of the present invention.

Fig. 4 is an enlarged view of the area a in fig. 3.

Fig. 5 is a perspective view of the nozzle ring without the rear cover in the present invention.

Fig. 6 is a first perspective view of the rear cover of the present invention.

Fig. 7 is a second perspective view of the rear cover of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not construed as limiting the present invention, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it is to be understood that the term: the center, vertically, transversely, length, width, thickness, upper and lower, preceding, back, left and right, vertical, level, top, end, inside and outside, clockwise, anticlockwise etc. indicate position or positional relationship for based on the position or positional relationship that the drawing shows, just for the convenience of description the utility model discloses and simplified description, consequently can not be understood as the restriction of the utility model. Furthermore, the terms: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless explicitly stated or limited otherwise, the terms: mounting, connecting, etc. should be understood broadly, and those skilled in the art will understand the specific meaning of the terms in this application as they pertain to the particular situation.

Referring to fig. 1 to 7, the nozzle ring with high blade controllability according to the present invention includes a stirring plate 1, a mounting plate 2, and a rear cover 3, wherein the mounting plate 2 is provided with a plurality of shaft holes, a rotatable blade shaft is provided in the shaft holes, one end of the blade shaft is fixed with a shifting fork 4, the other end of the blade shaft is fixed with a blade 6, and the shifting fork 4 and the blade 6 are respectively disposed at two sides of the mounting plate 2; the poking disc 1 drives the poking fork 4 to move, and the rear cover 3 is arranged on the outer side of the blade 6; the end face, facing the blades 6, of the rear cover 3 is provided with a plurality of rolling pieces 7 corresponding to the blades, and the rolling pieces 7 abut against the blades 6 and prevent the blades 6 from contacting the surface of the rear cover 3. Distance pins 5 are arranged between the mounting disc 2 and the back cover 3 and used for controlling the clearance between the blades and the mounting disc and the back cover. The groove is dialled to being equipped with a plurality of on dialling driving disk 1, in this group groove is arranged in to the outer end of shift fork 4, in this structure, through rotating to dial driving disk 1 can be convenient drive all shift forks 4 synchronous rotation, realize the synchronous rotation of all blades 6, it is convenient to adjust, and the responsiveness is high.

Specifically, in the embodiment of the present application, as shown in fig. 7, a plurality of slotted holes corresponding to the blades are formed in the end surface of the rear cover 3 facing the blades 6, the rolling members 7 are disposed in the slotted holes, and part of the rolling members 7 protrudes from the surface of the rear cover 3 and abuts against the blades 6 (as can be seen from fig. 4, the rolling members 7 slightly protrude from the surface of the rear cover 3), the rolling members 7 correspond to the blades 6 one to one, so that the blades 6 cannot contact with the surface of the rear cover 3, and the rolling members 7 are stably disposed and cannot be separated.

As can be seen from fig. 5, in the embodiment of the present application, the position where the rolling member 7 abuts against the blade 6 is coaxial with the blade shaft, and this arrangement makes the blade stressed stably, and when in use, the blade 6 has high coaxiality in the continuous rotation process, and does not have tilt offset.

As can be seen from the attached drawings, in the embodiment of the application, the rolling parts 7 are balls, the structure is simple, the rolling performance is high, the point contact is realized between the rolling parts and the blades, the circumferential full-angle rolling can be conveniently carried out along with the blades, and the phenomenon of clamping cannot occur. In another embodiment of the present application, the rolling elements 7 may also be rollers, which also achieve a good rolling contact function.

As can be seen from the above description, in the present application, the rolling members are provided on the back cover 3, and the blade 6 does not contact with the surface of the back cover 3, but abuts against the rolling members 7, so that during the moving and rotating processes of the blade, rolling friction is generated between the blade and the rolling members, the friction force is greatly reduced, the driving force is reduced, and the responsiveness is significantly improved.

More than, the utility model provides a nozzle cascade that blade controllability is high for among turbo charger, through the setting of rolling member, make sliding friction between blade and the back lid become the rolling friction between blade and the rolling member, frictional resistance reduces greatly, has realized that the drive power of drive nozzle cascade reduces, the advantage that responsiveness improves, has still eliminated the wearing and tearing between blade and the back lid simultaneously, has increased product life.

The protection scope of the present invention includes but is not limited to the above embodiments, the protection scope of the present invention is subject to the claims, and any replacement, deformation, and improvement that can be easily conceived by those skilled in the art made by the present technology all fall into the protection scope of the present invention.

Claims (6)

1. A nozzle ring with high blade controllability comprises a dial plate (1), a mounting plate (2) and a rear cover (3), wherein a plurality of shaft holes are formed in the mounting plate (2), a rotatable blade shaft is arranged in each shaft hole, a shifting fork (4) is fixed at one end of each blade shaft, blades (6) are fixed at the other end of each blade shaft, and the shifting forks (4) and the blades (6) are respectively arranged on two sides of the mounting plate (2); the shifting disc (1) drives the shifting fork (4) to move, and the rear cover (3) is arranged on the outer side of the blade (6); the novel blade-supporting mechanism is characterized in that a plurality of rolling pieces (7) corresponding to the blades are arranged on the end face, facing the blades (6), of the rear cover (3), and the rolling pieces (7) are abutted against the blades (6) to enable the blades (6) not to be in contact with the surface of the rear cover (3).

2. A nozzle ring with highly controllable vanes according to claim 1, characterized in that the end surface of the back cover (3) facing the vanes (6) is provided with a plurality of slots corresponding to the vanes, the rolling members (7) are disposed in the slots, and the rolling members (7) partially protrude from the surface of the back cover (3) to abut against the vanes (6).

3. A nozzle ring with highly controllable vanes according to claim 1, characterized in that the roller (7) is located against the vanes (6) coaxially with the vane axis.

4. A nozzle ring with high blade controllability according to claim 1 or 3, characterised in that the rolling elements (7) are balls.

5. A nozzle ring with highly controllable vanes according to claim 1, characterized in that distance pins (5) are provided between the mounting disc (2) and the back cover (3).

6. The nozzle ring with high blade controllability according to claim 1, wherein the poking disc (1) is provided with a plurality of poking grooves, and the outer ends of the poking forks (4) are arranged in the poking grooves.

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