Turbocharger thrust bearing convenient to install

Abstract

The utility model belongs to the technical field of thrust bearings, particularly relates to a turbocharger thrust bearing convenient to install, and provides the following scheme aiming at the problems that friction is aggravated and the service life of the thrust bearing is not favorably prolonged due to the fact that a fixing ring of a conventional thrust bearing possibly deviates or loosens in the long-term rotation process of a turbine. Comprising a thrust bearing body, the thrust bearing body is sequentially composed of a free ring, a ball retainer and a fixed ring from top to bottom, a turbine shaft of the turbocharger is sleeved with the thrust bearing body, and an abutting seat used for abutting against the bottom of the thrust bearing body is fixedly arranged at the bottom end of the turbine shaft. When the thrust bearing is used, the positioning and reinforcing assembly firmly fixes the thrust bearing body on a turbine shaft through the two-way threaded rod and the fastening nut, so that the deviation phenomenon possibly occurring in the long-term rotation process is effectively avoided, and the overall stability and reliability of a turbocharger are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thrust bearings, in particular to a thrust bearing of a turbocharger that is convenient for installation. Background Art

[0002] The thrust bearing of a turbocharger (thrust bearing) is a key component in a turbocharger. It is responsible for bearing the axial thrust of the turbine (i.e., the force along the axis direction), ensuring the normal operation and service life of the turbocharger.

[0003] Currently, the thrust bearing usually consists of three parts: a free ring, a ball cage, and a fixed ring. During installation, the fixed ring, the ball cage, and the free ring are successively sleeved on the turbine shaft. However, during the long-term rotation of the turbine, the fixed ring of the conventional thrust bearing may shift or loosen, resulting in increased friction and being unfavorable for improving the service life of the thrust bearing.

[0004] In view of the above problems, the present utility model document proposes a thrust bearing of a turbocharger that is convenient for installation. Summary of the Utility Model

[0005] The utility model provides a thrust bearing of a turbocharger that is convenient for installation, and solves the problem in the prior art that during the long-term rotation of the turbine, the fixed ring of the conventional thrust bearing may shift or loosen, resulting in increased friction and being unfavorable for improving the service life of the thrust bearing.

[0006] The utility model provides the following technical solutions:

[0007] A thrust bearing of a turbocharger that is convenient for installation, comprising:

[0008] A thrust bearing body, which is successively composed of a free ring, a ball cage, and a fixed ring from top to bottom. The thrust bearing body is sleeved on the turbine shaft of the turbocharger, and a seat is fixedly arranged at the bottom end of the turbine shaft for abutting against the bottom of the thrust bearing body;

[0009] A positioning and reinforcement assembly, which is arranged on the fixed ring of the thrust bearing body and is used to prevent it from shifting during the long-term rotation of the turbine shaft.

[0010] In a possible design, the positioning and reinforcement assembly includes two bidirectional threaded rods symmetrically arranged at the bottom of the fixed ring of the thrust bearing body. Thread grooves for conveniently installing the corresponding bidirectional threaded rods are provided at the bottom of the fixed ring of the thrust bearing body, and through holes for the corresponding bidirectional threaded rods to pass through are provided on the seat.

[0011] In a possible design, the other end of the bidirectional threaded rod is threadedly connected with a fastening nut for increasing the friction with the bottom of the seat.

[0012] In a possible design, a first gasket ring for increasing the friction with adjacent components is embedded and installed on the side wall of the free ring of the thrust bearing body.

[0013] In a possible design, a second gasket ring for increasing the friction with adjacent components is also embedded and installed on the top of the free ring of the thrust bearing body.

[0014] In a possible design, the thrust bearing body is made of heat-treated 52100 chromium steel.

[0015] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present utility model.

[0016] The working principle and usage process of this technical solution are as follows:

[0017] During installation, sleuth the thrust bearing body on the turbine shaft, ensure that the free ring faces upward and the fixed ring faces downward, and make contact with the abutment. Check whether the thrust bearing body is installed in place without shaking or tilting. Then, find the threaded grooves at the bottom of the fixed ring of the thrust bearing body, screw the two bidirectional threaded rods into the corresponding threaded grooves respectively, ensure that the other ends of the bidirectional threaded rods pass through the through holes on the abutment, and leave enough length for installing the fastening nuts. After that, use tools such as a wrench to screw the fastening nuts tightly on the protruding ends of the bidirectional threaded rods until the predetermined tightening torque is reached. It should be noted that the tightening degrees of the two fastening nuts should be kept consistent to avoid skewing of the thrust bearing body.

[0018] If it is necessary to increase the friction with adjacent components, a first gasket ring can be embedded and installed on the side wall of the free ring of the thrust bearing body, and a second gasket ring can be embedded and installed on the top of the free ring, ensure that the gasket rings are installed firmly without looseness or detachment. After the installation is completed, conduct a comprehensive inspection of the thrust bearing to ensure that all components are installed correctly without omission or damage, and perform necessary debugging work, such as rotating the turbine shaft to check the operation of the thrust bearing to ensure its stability without shaking.

[0019] The present utility model has the following beneficial effects:

[0020] In the present utility model, the positioning and reinforcement component firmly fixes the thrust bearing body on the turbine shaft through the bidirectional threaded rods and the fastening nuts, effectively avoiding the possible offset phenomenon during the long-term rotation process, and improving the overall stability and reliability of the turbocharger.

[0021] The present utility model increases the friction with adjacent components by embedding and installing gasket rings on the side wall and the top of the free ring of the thrust bearing, preventing the thrust bearing from sliding or falling off during use, and further improving its working performance.

[0022] By designing structures such as a positioning and reinforcement component and a threaded groove, the installation process of the thrust bearing of the present utility model is made more convenient and rapid, reducing the installation difficulty and cost. Moreover, the thrust bearing body is made of heat-treated chromium steel, having excellent wear resistance, fatigue resistance and high-temperature stability, which can meet the usage requirements of the turbocharger under harsh working conditions and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a three-dimensional structural schematic diagram of a thrust bearing of a turbocharger that is easy to install provided by an embodiment of the present utility model;

[0024] Figure 2 FIG. is a structural schematic diagram of another perspective of a thrust bearing of a turbocharger that is easy to install provided by an embodiment of the present utility model;

[0025] Figure 3 FIG. is a structural schematic diagram of the separation of the thrust bearing body and the turbine shaft of a thrust bearing of a turbocharger that is easy to install provided by an embodiment of the present utility model;

[0026] Figure 4 FIG. is a structural schematic diagram of the separation of the thrust bearing body and the bidirectional threaded rod of a thrust bearing of a turbocharger that is easy to install provided by an embodiment of the present utility model.

[0027] Reference numerals: 1, turbine shaft; 2, abutment seat; 3, thrust bearing body; 4, bidirectional threaded rod; 5, threaded groove; 6, through hole; 7, fastening nut; 8, first gasket ring; 9, second gasket ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0029] In the description of the present utility model, it should be understood that the terms "open hole", "upper", "middle", "length", "inner", etc. indicating the orientation or position relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0030] In order to keep the following description of the embodiments of the present utility model clear and concise, the detailed description of known functions and known components is omitted in the present utility model. Embodiment

[0031] Please refer to Figures 1-4 , a thrust bearing, comprising:

[0032] Thrust bearing body 3: This body is the main part of the thrust bearing, and is precisely assembled from three parts: a free ring, a ball retainer, and a fixed ring from top to bottom. The free ring is located at the top and is used to contact other components in the turbocharger; the ball retainer is located in the middle and is used to support and constrain the movement of the balls; the fixed ring is located at the bottom and is used to connect with the positioning reinforcement assembly. The entire thrust bearing body 3 is sleeved on the turbine shaft 1 of the turbocharger to ensure that the turbine shaft 1 can withstand axial thrust during rotation. The thrust bearing body 3 is made of heat-treated 52100 chrome steel. This material has good wear resistance, fatigue resistance and high temperature stability, and can meet the use requirements of the turbocharger under harsh working conditions;

[0033] Turbine shaft 1: one of the core components of the turbocharger, a support seat 2 is fixedly provided at the bottom end thereof, and the support seat 2 is used to support the bottom of the thrust bearing body 3 to provide stable support;

[0034] Positioning reinforcement component: It is arranged on the fixing ring of the thrust bearing body 3 to prevent it from shifting during the long-term rotation of the turbine shaft 1. The component includes two bidirectional threaded rods 4 symmetrically arranged at the bottom of the fixing ring of the thrust bearing body 3. One end of each bidirectional threaded rod 4 is connected to the bottom of the fixing ring through a thread groove 5, and the other end passes through the through hole 6 on the stop 2 and is fixed by a fastening nut 7 to prevent the thrust bearing body 3 from shifting during the long-term rotation of the turbine shaft 1. Among them, the bidirectional threaded rod 4 adopts a special design with different thread directions at both ends to facilitate the tightening of the fastening nut 7.

[0035] The present application can be used for thrust bearings inside turbochargers, and can also be used in other fields applicable to the present application. Example

[0036] Improvements based on Example 1:

[0037] A turbocharger thrust bearing which is easy to install and is used in the field of thrust bearings;

[0038] Please refer to Figure 1 In order to increase the friction between the thrust bearing body 3 and the adjacent components and prevent them from sliding during use, a first gasket 8 and a second gasket 9 are embedded and installed on the side wall and top of the free ring respectively. These gaskets are made of materials with a high friction coefficient, which can effectively improve the stability of the connection.

[0039] The above are only the specific implementation manners of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model; without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A thrust bearing of a turbocharger that is convenient for installation, characterized in that, Comprising: A thrust bearing body (3), the thrust bearing body (3) is successively composed of a free ring, a ball cage and a fixed ring from top to bottom, the thrust bearing body (3) is sleeved on the turbine shaft (1) of the turbocharger, and a seat (2) for abutting against the bottom of the thrust bearing body (3) is fixedly arranged at the bottom end of the turbine shaft (1); A positioning and reinforcement assembly, arranged on the fixed ring of the thrust bearing body (3), for preventing it from shifting during the long-term rotation of the turbine shaft (1).

2. The thrust bearing of a turbocharger that is easy to install according to claim 1, wherein The positioning and reinforcement assembly includes two bidirectional threaded rods (4) symmetrically arranged at the bottom of the fixed ring of the thrust bearing body (3), a threaded groove (5) for conveniently installing the corresponding bidirectional threaded rod (4) is arranged at the bottom of the fixed ring of the thrust bearing body (3), and a through hole (6) for the corresponding bidirectional threaded rod (4) to pass through is arranged on the seat (2).

3. The thrust bearing of a turbocharger that is easy to install according to claim 2, characterized in that, The other end of the bidirectional threaded rod (4) is threadedly connected with a fastening nut (7) for increasing the friction force with the bottom of the seat (2).

4. A thrust bearing of a turbocharger that is easy to install according to claim 1, characterized in that, A first gasket ring (8) for increasing the friction force with adjacent components is embedded and installed on the side wall of the free ring of the thrust bearing body (3).

5. A thrust bearing of a turbocharger that is easy to install according to claim 1, characterized in that, A second gasket ring (9) for also increasing the friction force with adjacent components is embedded and installed on the top of the free ring of the thrust bearing body (3).

6. A thrust bearing of a turbocharger that is easy to install according to claim 1, characterized in that, The thrust bearing body (3) is made of heat-treated 52100 chromium steel.

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