Turbocharger nozzle ring

Abstract

The utility model relates to the technical field of turbochargers, and particularly discloses a turbocharger nozzle ring which comprises a mounting disc, a shifting disc, a supporting cover plate, a plurality of pairs of blade assemblies and shifting forks, and the blade assemblies and the shifting forks are arranged on the two sides of the mounting disc respectively. The end face, facing the blade assembly, of the supporting cover plate is provided with the annular inclined face, in this way, when the blade assembly deforms at the high temperature, an avoiding space can be provided for the blade assembly, and therefore the problem of clamping stagnation caused by interference between the blade assembly and the supporting cover plate is avoided; meanwhile, one end of the blade assembly is connected with the other end of the shifting fork, the other end of the blade assembly is rotationally connected with the supporting cover plate, and different from the mode that the blade assembly is only connected with the shifting fork in the prior art, the stability of the blade assembly can be improved in the operation process through the connection mode, and eccentricity of the blade assembly is further avoided; and interference with the supporting cover plate is caused, so that clamping stagnation is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of turbochargers, in particular to a turbocharger nozzle ring. Background Art

[0002] With the increasing demand of users for engine power and economy, turbocharging technology is increasingly being applied to engines. The nozzle ring is one of the important components of the turbocharger, which is installed in the volute of the turbocharger. In the prior art, the blades of the nozzle ring are connected to the fork, the support cover is connected to the mounting plate, the support cover is parallel to the blade and is located on one side of the blade. At high temperatures, the blade will deform, causing interference between the blade and the support cover, resulting in a stuck phenomenon. Utility Model Content

[0003] The utility model aims to provide a turbocharger nozzle ring to solve the problem in the prior art that blades are deformed at high temperatures, causing interference with a supporting cover plate and thus causing jamming.

[0004] On the one hand, the utility model provides a turbocharger nozzle ring, which includes a mounting plate, a toggle plate, a support cover plate, and a plurality of pairs of blade assemblies and shift forks respectively arranged on both sides of the mounting plate. The toggle plate is rotatably mounted on the mounting plate and is on the same side as the shift fork. The support cover plate is connected to a side of the mounting plate facing the blade assembly. The toggle plate is drivingly connected to one end of the shift fork. One end of the blade assembly passes through the mounting plate and is connected to the other end of the shift fork. The other end of the blade assembly penetrates the support cover plate and is rotatably connected to the support cover plate. The end surface of the support cover plate facing the blade assembly is provided with an annular inclined surface, which is inclined along a side away from the blade assembly and extends to the inner circle of the support cover plate.

[0005] As an optional technical solution for the turbocharger nozzle ring, the inclination angle of the annular inclined surface is A, 0.5°≤A≤1.5°.

[0006] As an optional technical solution for the turbocharger nozzle ring, the support cover plate has a guide groove arranged on the annular inclined surface, the guide groove is connected to the inner circle of the support cover plate, and the guide groove is used to guide the gas flowing through.

[0007] As an optional technical solution for the turbocharger nozzle ring, there are multiple guide grooves, and the multiple guide grooves are distributed at intervals along the circumference of the annular inclined surface.

[0008] As an optional technical solution for a turbocharger nozzle ring, the blade assembly includes a blade body, a first rotating shaft and a second rotating shaft. The first rotating shaft and the second rotating shaft are respectively connected to two ends of the blade body. The first rotating shaft passes through a mounting plate and is connected to the other end of a shift fork. The second rotating shaft passes through a supporting cover plate and is rotatably connected to the supporting cover plate.

[0009] As an optional technical solution for the turbocharger nozzle ring, the support cover plate has an assembly hole, the second rotating shaft penetrates into the assembly hole, and is rotatably connected to the inner wall of the assembly hole.

[0010] As an optional technical solution for the turbocharger nozzle ring, the turbocharger nozzle ring further comprises a limiting wheel arranged on the mounting plate, the limiting wheel having a limiting ring groove, and the limiting ring groove abuts against the inner ring of the dial plate.

[0011] As an optional technical solution for the turbocharger nozzle ring, the limiting wheel includes a main body and a connecting column connected to each other, the connecting column is connected to the mounting plate and is located on the inner side of the dial plate, and the main body has a limiting ring groove.

[0012] As an optional technical solution for the turbocharger nozzle ring, the turbocharger nozzle ring further comprises a positioning ring arranged on the mounting plate, the positioning ring having a positioning ring groove, and the positioning ring groove abuts against the inner ring of the dial plate.

[0013] As an optional technical solution for the turbocharger nozzle ring, there are multiple limiting wheels and multiple positioning rings, the multiple limiting wheels are distributed at intervals along the circumference of the mounting plate, and the multiple positioning rings are distributed at intervals along the circumference of the mounting plate.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a turbocharger nozzle ring, which includes a mounting plate, a toggle plate, a support cover plate, and multiple pairs of blade assemblies and forks respectively arranged on both sides of the mounting plate. An annular inclined surface is provided on the end surface of the support cover plate facing the blade assembly. In this way, when the blade assembly is deformed at high temperature, an escape space can be provided for the blade assembly, thereby avoiding interference between the blade assembly and the support cover plate, which causes a jamming problem; at the same time, one end of the blade assembly is connected to the other end of the fork, and the other end of the blade assembly is rotatably connected to the support cover plate, which is different from the method in which the blade assembly is only connected to the fork in the prior art. This connection method can improve the stability of the blade assembly during operation, further avoid eccentricity of the blade assembly, interference with the support cover plate, and then jamming. The turbocharger nozzle ring of the utility model can effectively solve the problem in the prior art that the blade assembly is easily deformed at high temperature, causing interference with the support cover plate and jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a turbocharger nozzle ring in an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the support cover plate in the embodiment of the utility model;

[0018] Figure 3 It is a front view of a turbocharger nozzle ring in an embodiment of the utility model;

[0019] Figure 4 A cross-sectional view of a turbocharger nozzle ring in an embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the blade assembly in the embodiment of the utility model;

[0021] Figure 6 It is a schematic diagram of the structure of the limiting wheel in the embodiment of the utility model.

[0022] In the figure:

[0023] 1. Installation disk;

[0024] 2. Dial;

[0025] 3. Support cover plate; 31. Annular inclined surface; 32. Guide groove; 33. Assembly hole;

[0026] 4. Blade assembly; 41. Blade body; 42. First rotating shaft; 43. Second rotating shaft;

[0027] 5. Pull out the fork;

[0028] 6. Limiting wheel; 61. Limiting ring groove; 62. Main body; 63. Connecting column;

[0029] 7. Locating ring; 71. Locating ring groove. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] like Figures 1 to 6As shown, this embodiment provides a turbocharger nozzle ring, which includes a mounting plate 1, a toggle plate 2, a support cover plate 3, and multiple pairs of blade assemblies 4 and shift forks 5 respectively arranged on both sides of the mounting plate 1. The toggle plate 2 is rotatably mounted on the mounting plate 1 and is on the same side as the shift fork 5. The support cover plate 3 is connected to the side of the mounting plate 1 facing the blade assembly 4, and the toggle plate 2 is drivingly connected to one end of the shift fork 5. Among them, an annular inclined surface 31 is provided on the end surface of the support cover plate 3 facing the blade assembly 4, and the annular inclined surface 31 is inclined along the side away from the blade assembly 4 and extends to the inner circle of the support cover plate 3. With such a configuration, when the blade assembly 4 is deformed at high temperature, it can provide an escape space for the blade assembly 4, thereby avoiding interference between the blade assembly 4 and the support cover plate 3, which may cause a jam; at the same time, one end of the blade assembly 4 is connected to the other end of the fork 5, and the other end of the blade assembly 4 is rotatably connected to the support cover plate 3, which is different from the method in the prior art where the blade assembly 4 is only connected to the fork 5. This connection method can improve the stability of the blade assembly 4 during operation, further avoiding eccentricity of the blade assembly 4, interference with the support cover plate 3, and further jamming. The turbocharger nozzle ring of the utility model can effectively solve the problem in the prior art that the blade assembly 4 is easily deformed at high temperature, causing interference with the support cover plate 3 and jamming.

[0035] It should be noted that the support cover plate 3 is connected to the side of the mounting plate 1 facing the blade assembly 4 through the support column, and the blade assembly 4 is located between the mounting plate 1 and the support cover plate 3 .

[0036] Optionally, the dial plate 2 has a plurality of dial grooves, which are spaced apart along the circumference of the dial plate 2 , and a shift fork 5 is clamped in each of the dial grooves.

[0037] The inclination angle of the annular inclined surface 31 is A, 0.5°≤A≤1.5°. In this way, limiting the inclination angle A of the annular inclined surface 31 within the above numerical range can achieve the effect of providing an escape space for the blade assembly 4. Specifically, the inclination angle A of the annular inclined surface 31 can be adjusted according to needs, wherein the inclination angle A of the annular inclined surface 31 can be 0.5°, 1° or 1.5°, etc.

[0038] like Figure 1 and Figure 2 As shown, in this embodiment, the support cover plate 3 has a guide groove 32 arranged on the annular inclined surface 31. The guide groove 32 is connected to the inner circle of the support cover plate 3, so that when the gas passes through the narrow guide groove 32 on the turbine after passing through the blade assembly 4, it can play a role in increasing the speed and pressure of the gas. The guide groove 32 is semicircular.

[0039] Furthermore, a plurality of guide grooves 32 are provided, and the plurality of guide grooves 32 are distributed at intervals along the circumferential direction of the annular inclined surface 31. Such a configuration can further increase the speed and pressure of the gas.

[0040] like Figure 1 , Figure 4 and Figure 5 As shown, specifically, the blade assembly 4 includes a blade body 41, a first rotating shaft 42 and a second rotating shaft 43. The first rotating shaft 42 and the second rotating shaft 43 are respectively connected to the two ends of the blade body 41, the first rotating shaft 42 passes through the mounting plate 1 and is connected to the other end of the fork 5, and the second rotating shaft 43 passes through the support cover plate 3 and is rotatably connected to the support cover plate 3. This arrangement allows the blade assembly 4 and the support cover plate 3 to be rotatably connected, further enhancing the stability of the structure of the blade assembly 4.

[0041] The support cover plate 3 has an assembly hole 33, and the second shaft 43 is inserted into the assembly hole 33 and is rotatably connected to the inner wall of the assembly hole 33. A bearing is installed in the assembly hole 33, and the second shaft 43 is inserted into the bearing, so that the second shaft 43 is rotatably connected to the inner wall of the assembly hole 33.

[0042] Optionally, there are multiple assembly holes 33 , and the multiple assembly holes 33 and the second rotating shafts 43 of the multiple blade assemblies 4 are arranged in a one-to-one correspondence.

[0043] Specifically, the turbocharger nozzle ring further includes a limiting wheel 6 disposed on the mounting plate 1, the limiting wheel 6 having a limiting ring groove 61, and the limiting ring groove 61 abuts against the inner ring of the toggle plate 2. This arrangement enables the limiting wheel 6 to limit the inner ring of the toggle plate 2. At the same time, the limiting wheel 6 controls the up and down movement of the toggle plate 2 through the gap between the limiting wheel 6 and the mounting plate 1 after press-fitting.

[0044] The limiting wheel 6 includes a body 62 and a connecting column 63 connected to each other, the connecting column 63 is connected to the mounting plate 1 and is located on the inner side of the dial plate 2, and the body 62 has a limiting ring groove 61. In this embodiment, the body 62 and the connecting column 63 are an integrally formed structure, so that during installation, they can be pressed together simultaneously, which is more convenient and quick.

[0045] Optionally, the outer wall of the connecting column 63 has knurling, and the connection with the mounting plate 1 is an interference connection.

[0046] Specifically, the turbocharger nozzle ring further includes a positioning ring 7 disposed on the mounting plate 1, the positioning ring 7 having a positioning ring groove 71, and the positioning ring groove 71 abuts against the inner ring of the dial plate 2. In this way, the positioning ring 7 can play a role in positioning the inner ring of the dial plate 2 during operation. The material of the positioning ring 7 is different from that of the limiting wheel 6. The positioning ring 7 has an anti-error feature hole, and the rest of the structure is the same as that of the limiting wheel 6.

[0047] Furthermore, there are multiple limit wheels 6 and multiple positioning rings 7, and multiple limit wheels 6 are spaced apart along the circumference of the mounting plate 1, and multiple positioning rings 7 are spaced apart along the circumference of the mounting plate 1. Similarly, such an arrangement can further play a role in stabilization and positioning. In this embodiment, there are two limit wheels 6 and two positioning rings 7.

[0048] The advantages of the utility model are as follows:

[0049] 1. The three limit wheels and three positioning rings are only different in material and anti-error feature holes, and the rest are the same. They can be pressed together during installation, which is more convenient.

[0050] 2. The axial clearance of the limiting wheel is guaranteed by the processing size of a part, which is more controllable and reliable;

[0051] 3. Reduced number of parts, less prone to failure, and more reliable;

[0052] 4. The blade assembly is changed from the original T-type to a double-axis blade assembly, which can increase the stability of the blade assembly and avoid the blade assembly from getting stuck due to eccentricity at high temperatures;

[0053] 5. An annular inclined surface and a guide groove are added to the support cover plate. The main functions are: the annular inclined surface is mainly set to solve the high-temperature deformation of the blade assembly under high temperature; the guide groove is set to have a guide effect. When the exhaust gas passes through the narrow guide groove on the turbine through the action of the blade assembly, the airflow can be accelerated and pressurized.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A turbocharger nozzle ring, characterized in that: The invention comprises a mounting plate (1), a shifting plate (2), a supporting cover plate (3), and a plurality of pairs of blade assemblies (4) and shift forks (5) respectively arranged on both sides of the mounting plate (1); the shifting plate (2) is rotatably mounted on the mounting plate (1) and is on the same side as the shift fork (5); the supporting cover plate (3) is connected to a side of the mounting plate (1) facing the blade assembly (4); the shifting plate (2) and one end of the shift fork (5) are drivingly connected; one end of the blade assembly (4) passes through the mounting plate (1) and is connected to the other end of the shift fork (5); the other end of the blade assembly (4) passes through the supporting cover plate (3) and is rotatably connected to the supporting cover plate (3); an annular inclined surface (31) is provided on the end surface of the supporting cover plate (3) facing the blade assembly (4); the annular inclined surface (31) is inclined along a side away from the blade assembly (4) and extends to the inner circle of the supporting cover plate (3).

2. The turbocharger nozzle ring according to claim 1, characterized in that: The inclination angle of the annular inclined surface (31) is A, 0.5°≤A≤1.5°.

3. The turbocharger nozzle ring according to claim 1, characterized in that: The support cover plate (3) has a guide groove (32) arranged on the annular inclined surface (31); the guide groove (32) is connected to the inner ring of the support cover plate (3); and the guide groove (32) is used to guide the gas flowing through.

4. The turbocharger nozzle ring according to claim 3, characterized in that: There are a plurality of guide grooves (32), and the plurality of guide grooves (32) are distributed at intervals along the circumference of the annular inclined surface (31).

5. The turbocharger nozzle ring according to claim 1, characterized in that: The blade assembly (4) comprises a blade body (41), a first rotating shaft (42) and a second rotating shaft (43); the first rotating shaft (42) and the second rotating shaft (43) are respectively connected to two ends of the blade body (41); the first rotating shaft (42) passes through the mounting plate (1) and is connected to the other end of the shift fork (5); the second rotating shaft (43) passes through the support cover plate (3) and is rotatably connected to the support cover plate (3).

6. The turbocharger nozzle ring according to claim 5, characterized in that: The support cover plate (3) has an assembly hole (33), and the second rotating shaft (43) penetrates into the assembly hole (33) and is rotatably connected to the inner wall of the assembly hole (33).

7. The turbocharger nozzle ring according to any one of claims 1 to 6, characterized in that: The turbocharger nozzle ring also includes a limiting wheel (6) arranged on the mounting plate (1), the limiting wheel (6) having a limiting ring groove (61), and the limiting ring groove (61) abuts against the inner ring of the dial plate (2).

8. The turbocharger nozzle ring according to claim 7, characterized in that: The limiting wheel (6) comprises a main body (62) and a connecting column (63) which are connected to each other. The connecting column (63) is connected to the mounting plate (1) and is located on the inner side of the shifting plate (2). The main body (62) has the limiting ring groove (61).

9. The turbocharger nozzle ring according to claim 7, characterized in that: The turbocharger nozzle ring further comprises a positioning ring (7) arranged on the mounting plate (1), wherein the positioning ring (7) has a positioning ring groove (71), and the positioning ring groove (71) abuts against the inner ring of the dial plate (2).

10. The turbocharger nozzle ring according to claim 9, characterized in that: There are multiple limit wheels (6) and multiple positioning rings (7), and the multiple limit wheels (6) are distributed at intervals along the circumference of the mounting plate (1), and the multiple positioning rings (7) are distributed at intervals along the circumference of the mounting plate (1).

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