Turbocharger

Abstract

The utility model relates to the field of oil seal structures, in particular to a turbocharger, a middle shell is arranged in the middle of a turbocharger base, a middle shaft is arranged in the middle of the middle shell in an extending mode, and a detachable oil seal assembly is installed in the middle shell and located on the outer side of the middle shaft. A plurality of movable cavities are formed in the oil seal assembly, limiting pieces are movably arranged in the movable cavities, and limiting cavities are formed in the positions, corresponding to the limiting pieces, of the middle shell in a matched mode. According to the oil seal assembly, the clamping piece can be fixed by installing the installation ring in the annular cavity, the oil seal assembly can be fixedly installed in the middle shell through fixed clamping between the clamping piece and the clamping cavity, the installation mode is convenient, and a user can conveniently disassemble and replace the oil seal assembly in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seal structures, in particular to a turbocharger. Background Art

[0002] A turbocharger is an air compressor that uses the inertial force of the exhaust gas discharged by the engine to drive the turbine to rotate, which in turn drives the coaxial impeller to rotate, thereby compressing the air sent from the air filter duct and pressurizing the air before it enters the cylinder.

[0003] The oil seal structure of the turbocharger is a key component in the turbocharger. Its main function is to prevent lubricating oil from leaking from the bearings and rotating parts of the turbocharger, while ensuring the normal operation and performance of the turbocharger.

[0004] Oil seals will age after long-term use, which will reduce their sealing performance and create the risk of oil leakage. Therefore, oil seals need to be replaced regularly. The oil seal structure in turbochargers currently on the market is often installed by pressing and knocking. This installation method is more troublesome and not conducive to the replacement of the oil seal later. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a turbocharger.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A turbocharger includes a turbocharger base, an intermediate housing is provided in the middle of the turbocharger base, a central shaft is extended from the middle of the intermediate housing, and a detachable oil seal assembly is installed on the outside of the central shaft in the intermediate housing; a plurality of movable cavities are provided in the oil seal assembly, and limit members are movably provided in the movable cavities, and corresponding limit members on the intermediate housing are adapted to provide limit cavities.

[0008] In addition, a preferred structure is that an annular cavity is opened downwardly at the top of the oil seal assembly, and a detachable mounting ring is installed in the annular cavity.

[0009] In addition, a preferred structure is that a plurality of clamping members and mounting members are fixedly provided on the outer side of the mounting ring, and the clamping members and mounting members are staggered in sequence.

[0010] In addition, the preferred structure is that the corresponding clamping piece and mounting piece at the top of the oil seal assembly are adapted to have a clamping cavity and a mounting cavity, screws are inserted downward from the top of the mounting piece, and the screws are inserted through the mounting piece into the oil seal assembly.

[0011] In addition, the preferred structure is that the bottom of the card cavity on the oil seal assembly is connected to a movable cavity, the movable cavity extends from the side of the oil seal assembly, guide parts are fixedly provided on both sides of the limiter, and guide cavities are adapted to correspond to the guide parts on both sides of the movable cavity.

[0012] In addition, a preferred structure is that a plurality of fixing columns are fixed vertically downward on the bottom of the clamping member, and fixing cavities are adapted to be opened on the corresponding fixing columns on the limiting member.

[0013] The beneficial effects of the present invention are as follows: the clamping member can be fixed by installing the mounting ring in the ring cavity, and the oil seal assembly can be fixedly installed in the intermediate housing by the fixing clamping device between the clamping member and the clamping cavity. This installation method is more convenient and facilitates the user to disassemble and replace the oil seal assembly at a later time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a turbocharger proposed in the present utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the structure of the intermediate shell;

[0016] Figure 3 for Figure 2 Schematic diagram of the structure when the oil seal assembly is hidden;

[0017] Figure 4 This is a structural schematic diagram of an oil seal assembly for a turbocharger proposed in the present invention;

[0018] Figure 5 for Figure 4 Schematic diagram of explosion structure in ;

[0019] Figure 6 for Figure 4 Schematic diagram of the structure when the mounting ring on the oil seal assembly is hidden;

[0020] Figure 7 This is a schematic diagram of the structure of a mounting ring for a turbocharger proposed in this utility model.

[0021] Figure 8 The present invention is a schematic structural diagram of a limiter for a turbocharger.

[0022] In the figure: 1 turbocharger base, 11 intermediate housing, 12 middle shaft, 13 limit cavity, 2 oil seal assembly, 21 ring cavity, 22 mounting cavity, 23 clamping cavity, 24 movable cavity, 25 guide cavity, 3 mounting ring, 31 clamping part, 311 fixing column, 32 mounting part, 4 screw, 5 limit part, 51 guide part, 52 fixing cavity. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-8 A turbocharger includes a turbocharger base 1, an intermediate housing 11 disposed in the middle of the turbocharger base 1, a central shaft 12 extending from the middle of the intermediate housing 11, and a removable oil seal assembly 2 mounted outside the intermediate housing 11 and located outside the central shaft 12. The oil seal assembly 2 defines multiple movable cavities 24, each of which contains a movably disposed limit member 5. Furthermore, the intermediate housing 11 defines a corresponding limit chamber 13 corresponding to the limit member 5.

[0025] The top of the oil seal assembly 2 is provided with an annular cavity 21, and a detachable mounting ring 3 is installed in the annular cavity 21. By assembling the mounting ring 3 in the annular cavity 21, the fixing of the clamping member 31 can be achieved.

[0026] The outer side of the mounting ring 3 is fixedly provided with multiple clamping members 31 and mounting members 32, which are arranged in an alternating pattern. The top of the oil seal assembly 2 is adapted to define a clamping cavity 23 and a mounting cavity 22, corresponding to the clamping members 31 and mounting members 32. Screws 4 are inserted downwardly from the top of the mounting members 32 and pass through the mounting members 32 into the oil seal assembly 2. The screws 4 on the mounting members 32 secure the mounting ring 3 within the ring cavity 21.

[0027] The bottom of the locking cavity 23 of the oil seal assembly 2 is connected to a movable cavity 24, which extends from the side of the oil seal assembly 2. Guide members 51 are fixedly provided on both sides of the stopper 5, and guide cavities 25 are adapted to correspond to the guide members 51 on both sides of the movable cavity 24. The adaption between the guide members 51 and the guide cavities 25 prevents the stopper 5 from falling out of the movable cavity 24 during movement and improves the stability of the stopper 5 during movement.

[0028] The bottom of the clamping member 31 is vertically fixed with multiple fixing posts 311, and the stopper 5 is adapted to have a fixing cavity 52 corresponding to the fixing posts 311. When the end of the stopper 5 is removed from the movable cavity 24 and inserted into the stopper cavity 13, the fixing posts 311 are inserted into the fixing cavity 52, thereby securing the stopper 5 and thus the oil seal assembly 2.

[0029] In this embodiment, when the user needs to install the oil seal assembly 2 on the intermediate housing 11, he only needs to directly put the oil seal assembly 2 on the central shaft 12, then rotate the oil seal assembly 2, and use his fingers to push the limit member 5 in the movable cavity 24 outward during the rotation process.

[0030] When the movable cavity 24 of the oil seal assembly 2 is aligned with the limiting cavity 13 of the intermediate housing 2, the end of the side limiting member 5 will move into the limiting cavity 13. The user then simply pushes all limiting members 5 into the limiting cavity 13. The mounting ring 3 is then assembled into the ring cavity 21. At this point, the clamping members 31 are all located in the clamping cavity 23, and the mounting members 32 are all located in the mounting cavity 22. The user then simply inserts the screws 4 through the mounting members 32 and into the screw holes in the mounting cavity 22 to secure the mounting ring 3.

[0031] During the installation of the mounting ring 3, the fixing posts 311 at the bottom of the clamping member 31 need to be inserted into the fixing cavity 52 on the stopper 5. This allows the stopper 5 to be fixed by the fitting arrangement between the fixing posts 311 and the fixing cavity 52. ​​This, in turn, allows the oil seal assembly 2 to be fixedly installed by the fitting arrangement between the stopper 5 and the limiting cavity 13. This installation method is quick and convenient, and facilitates subsequent disassembly and replacement by the user.

[0032] It is worth noting that the cavities opened in this technical solution are all located on the outer surface of the oil seal assembly 2 and are not opened through, so the sealing performance of the oil seal assembly 2 will not be affected.

[0033] In the present invention, the clamping member 5 can be fixed by installing the mounting ring 3 in the ring cavity 21, and the oil seal assembly 2 can be fixedly installed in the intermediate housing 11 through the fixing clamping device between the clamping member 5 and the clamping cavity 13. This installation method is more convenient and facilitates the user to disassemble and replace the oil seal assembly 2 later.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A turbocharger, comprising a turbocharger base (1), characterized in that: An intermediate housing (11) is provided in the middle of the turbocharger base (1), a central shaft (12) is provided extending from the middle of the intermediate housing (11), and a detachable oil seal assembly (2) is installed outside the central shaft (12) in the intermediate housing (11); The oil seal assembly (2) has multiple movable cavities (24) formed therein, each of which has a movably arranged limiter (5) in it, and corresponding limiters (5) on the intermediate housing (11) are adapted to have limiter cavities (13) formed therein.

2. A turbocharger according to claim 1, characterized in that: A ring cavity (21) is provided downwardly on the top of the oil seal assembly (2), and a detachable mounting ring (3) is installed in each ring cavity (21).

3. A turbocharger according to claim 2, characterized in that: A plurality of clamping members (31) and mounting members (32) are fixedly arranged on the outer side of the mounting ring (3), and the clamping members (31) and the mounting members (32) are arranged alternately in sequence.

4. A turbocharger according to claim 3, characterized in that: The top of the oil seal assembly (2) corresponds to the clamping member (31) and the mounting member (32), and both are adapted to have a clamping cavity (23) and a mounting cavity (22). Screws (4) are inserted downwardly from the top of the mounting member (32), and the screws (4) pass through the mounting member (32) and are inserted into the oil seal assembly (2).

5. The turbocharger according to claim 4, characterized in that: The bottom of the clamping cavity (23) on the oil seal assembly (2) is connected to a movable cavity (24), and the movable cavity (24) extends from the side of the oil seal assembly (2). Guide members (51) are fixedly provided on both sides of the limiting member (5), and guide cavities (25) are adapted to be opened on both sides of the movable cavity (24) corresponding to the guide members (51).

6. The turbocharger according to claim 5, characterized in that: The bottom of the clamping member (31) is fixed downwardly with a plurality of fixing columns (311) vertically arranged thereon, and the corresponding fixing columns (311) on the limiting member (5) are adapted to be provided with fixing cavities (52).

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