CN212202225U

CN212202225U - Semi-floating bearing for automobile turbocharger

Info

Publication number: CN212202225U
Application number: CN202020661226.7U
Authority: CN
Inventors: 沈艳; 叶震杰; 袁玺; 陈建平
Original assignee: Wuxi Credible Turbocharger Co ltd
Current assignee: Wuxi Credible Turbocharger Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-12-22
Anticipated expiration: 2030-04-27

Abstract

The utility model relates to a bearing, car turbo charger is with semi-floating bearing specifically says so. The stop pin comprises a body and a stop pin positioned outside the body. The middle part of body has the oil filler point along its circumference equipartition, the radial arrangement of body is followed to the stop pin, and its one end is located one of them oil filler point. The stop pin is characterized by comprising a pin shell and a pin rod. The pin shell is cylindrical, an end cover is fixed at the opening of the pin shell, and hydraulic oil is filled in the end cover. The end cover is provided with a central hole, one end of the pin rod penetrates through the central hole and extends into the pin shell, the other end of the pin rod is positioned outside the pin shell, and the pin rod is connected with the central hole in a sliding sealing manner. And one end of the pin rod positioned in the pin shell is concentrically provided with a piston, the piston is connected with the inner wall of the pin shell in a sliding sealing manner, and one end of the pin rod positioned outside the pin shell is positioned in one oil hole of the body. The semi-floating bearing has long service life.

Description

Semi-floating bearing for automobile turbocharger

Technical Field

The utility model relates to a bearing, install car turbo charger on car turbo enhancer's rotor and use semi-floating bearing specifically says so.

Background

An automotive turbocharger is actually an air compressor that increases the amount of intake air by compressing air. The engine utilizes the inertia impulse force of the exhaust gas discharged by the engine to push the turbine in the turbine chamber, the turbine drives the impeller through the rotating shaft, and the impeller pumps the air sent by the air filter pipeline to pressurize the air to enter the cylinder, thereby achieving the effects of improving the power of the engine, improving the fuel economy and reducing the harmful emission of the engine. Semi-floating bearings are arranged on the rotors of the automobile turbine intensifier.

Currently, semi-floating bearings for automotive turboexpanders used in the industry comprise a body and a stop pin. The middle part of body has the oil filler point along its central equipartition, the stop pin is the straight-bar, and it is arranged along the radial of body, and its one end is located one of them oil filler point. When the automobile turbocharger stopping pin connecting device is used, the body is installed on a rotor of the automobile turbocharger, and one end, far away from the body, of the stopping pin is connected with an intermediate shell of the automobile turbocharger. The rotation stopping pin of the semi-floating bearing is rigidly connected with the shell, so that impact on the turbocharger from the outside is caused in the use process, the impact is directly transmitted to the body through the rotation stopping pin, and the service life of the semi-floating bearing is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a semi-floating bearing for car turbo charger, this semi-floating bearing's life is longer.

In order to solve the problems, the following technical scheme is adopted:

the utility model discloses a semi-floating bearing for car turbo charger includes the body and is located this external stop pin. The middle part of body has the oil filler point along its circumference equipartition, the radial arrangement of body is followed to the stop pin, and its one end is located one of them oil filler point. The stop pin is characterized by comprising a pin shell and a pin rod. The pin shell is cylindrical, an end cover is fixed at the opening of the pin shell, and hydraulic oil is filled in the end cover. The end cover is provided with a central hole, one end of the pin rod penetrates through the central hole and extends into the pin shell, the other end of the pin rod is positioned outside the pin shell, and the pin rod is connected with the central hole in a sliding sealing manner. And one end of the pin rod positioned in the pin shell is concentrically provided with a piston, the piston is connected with the inner wall of the pin shell in a sliding sealing manner, and one end of the pin rod positioned outside the pin shell is positioned in one oil hole of the body.

The end part of the pin rod positioned outside the pin shell is hemispherical, and the outer diameter of the hemisphere is larger than the inner diameter of the oil hole of the body.

The end cover is fixed on the pin shell through a bolt.

By adopting the scheme, the method has the following advantages:

because the utility model discloses a car is stop pin of semi-floating bearing for turbocharger includes round pin shell and pin pole, the round pin shell is the tube-shape, its oral area is fixed with the end cover, its intussuseption is filled with hydraulic oil, there is the centre bore on the end cover, the one end of pin pole is passed the centre bore and is stretched into in the round pin shell, the other end of pin pole is located outside the round pin shell, it describes to be connected to be the sliding seal between pin pole and centre bore, the pin pole that is located in the round pin shell is served and is provided with the piston with one heart, it describes to be connected to be the sliding seal between piston and round pin shell inner wall, the pin pole one end that is located outside the. The stop pin of the semi-floating bearing forms a flexible structure by utilizing the matching of the piston and hydraulic oil, and when external impact on the turbocharger passes through the stop pin, most impact force can be eliminated by the hydraulic oil, so that the influence of the external impact on the body of the semi-floating bearing is small, and the service life of the semi-floating bearing is greatly prolonged.

Drawings

Fig. 1 is a schematic structural view of the semi-floating bearing for the turbocharger of the automobile of the present invention.

Detailed Description

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

As shown in fig. 1, the semi-floating bearing for the automobile turbocharger of the present invention comprises a body 1 and a stop pin located outside the body 1. The middle part of body 1 has oil filler hole 2 along its circumference equipartition, the radial arrangement of body 1 is followed to the stop pin, and its one end is located one of them oil filler hole 2. The arresting pin comprises a pin housing 5 and a pin shank 3. The pin shell 5 is cylindrical, an end cover 7 is fixed at the opening part of the pin shell, and hydraulic oil is filled in the end cover. The end cover 7 is provided with a central hole, one end of the pin rod 3 penetrates through the central hole and extends into the pin shell 5, the other end of the pin rod 3 is positioned outside the pin shell 5, and the pin rod 3 is connected with the central hole in a sliding sealing manner. A piston 4 is concentrically arranged at one end of a pin rod 3 in a pin shell 5, the piston 4 is connected with the inner wall of the pin shell 5 in a sliding sealing manner, and one end of the pin rod 3 outside the pin shell 5 is positioned in one oil hole 2 of the body 1.

The end of the pin rod 3 outside the pin housing 5 is hemispherical, and the outer diameter of the hemisphere is larger than the inner diameter of the oil filler hole 2 of the body 1.

The end cap 7 is fixed to the pin housing 5 by means of bolts 6.

When in use, the body 1 is arranged on a rotor of an automobile turbocharger, and the pin shell 5 of the far shell is connected with an intermediate shell of the automobile turbocharger. The stop pin of the semi-floating bearing forms a flexible structure by utilizing the matching of the piston 4 and hydraulic oil, and when external impact on the turbocharger passes through the stop pin, most impact force can be eliminated by the hydraulic oil, so that the influence of the external impact on the body 1 of the semi-floating bearing is small, and the service life of the semi-floating bearing is greatly prolonged.

Claims

1. The semi-floating bearing for the automobile turbocharger comprises a body (1) and a stop pin positioned outside the body (1); oil holes (2) are uniformly distributed in the middle of the body (1) along the circumferential direction of the body, the stop pin is arranged along the radial direction of the body (1), and one end of the stop pin is positioned in one of the oil holes (2); the stop pin is characterized by comprising a pin shell (5) and a pin rod (3); the pin shell (5) is cylindrical, an end cover (7) is fixed at the opening part of the pin shell, and hydraulic oil is filled in the end cover; the end cover (7) is provided with a central hole, one end of the pin rod (3) penetrates through the central hole and extends into the pin shell (5), the other end of the pin rod (3) is positioned outside the pin shell (5), and the pin rod (3) is connected with the central hole in a sliding sealing manner; a piston (4) is concentrically arranged at one end of a pin rod (3) in a pin shell (5), the piston (4) is connected with the inner wall of the pin shell (5) in a sliding sealing manner, and one end of the pin rod (3) outside the pin shell (5) is positioned in one oil filling hole (2) of the body (1).

2. Semi-floating bearing for the turbocharger of motor vehicles according to claim 1, characterized in that the end of the pin rod (3) located outside the pin housing (5) is hemispherical and the external diameter of the hemisphere is greater than the internal diameter of the oil hole (2) of the body (1).

3. Semi-floating bearing for an automotive turbocharger according to claim 1, characterized in that the end cap (7) is fixed to the pin housing (5) by means of bolts (6).