Turbine disc centering and limiting mechanism and turbine disc storage device

Abstract

The turbine disc centering and limiting mechanism comprises a containing platform and at least three positioning wheels arranged on the containing platform, the positioning wheels are rotatably connected to the containing platform, when the positioning wheels are rotated, the radius of a circumscribed circle formed by the outer side wheel edges of the at least three positioning wheels can be adjusted, and the radius of the circumscribed circle can be adjusted. The positioning wheels are arranged on the base so as to achieve centering and limiting of turbine discs with disc center holes of different diameters, and in the placing state, the disc center holes of the turbine discs are externally tangent to the outer side wheel edges of the at least three positioning wheels.

Description

Technical Field

[0001] The present invention relates to the technical field of engine assembly, and particularly relates to a centering and limiting mechanism for a turbine disk and a turbine disk storage device. Background Art

[0002] The low-pressure turbine rotor of an aeroengine consists of multiple turbine disks. As shown in Figure 1 , the diameters and specifications of the turbine disks are different. The turbine disks are usually stored on trays in an elevated warehouse. During the handling and placement of the trays, the trays may tilt, resulting in the turbine disks slipping. Therefore, during the placement process, the turbine disks must be centered to improve the storage safety of the turbine disks. Since the sizes of the turbine disks are different, if the turbine disks are placed in a customized manner, a tray of one specification can only place a certain stage of turbine disk of a certain model, which will inevitably increase the types and kinds of trays, resulting in an increase in process costs and the complexity of placing the turbine disks. Summary of the Invention

[0003] An object of the present invention is to provide a centering and limiting mechanism for a turbine disk, which can realize the centering placement of turbine disks of different sizes, improve the placement safety of turbine disks, improve the versatility of the centering and limiting structure, and reduce process costs.

[0004] The above-mentioned centering and limiting mechanism for a turbine disk includes a placement platform and at least three positioning wheels arranged on the placement platform. The positioning wheels are rotatably connected to the placement platform;

[0005] Wherein, by rotating the positioning wheels, the radius of the circumcircle formed by the outer rims of the at least three positioning wheels is adjustable to achieve centering and limiting of turbine disks with different diameters of disk center holes. In the placement state, the disk center hole of the turbine disk is circumscribed to the outer rims of the at least three positioning wheels.

[0006] In one or more embodiments, the centering and limiting mechanism for a turbine disk further includes a limiting device for limiting and locking the angular position of the positioning wheels.

[0007] In one or more embodiments, the positioning wheel is a ratchet wheel, and the limiting device is a ratchet pawl. The limiting device limits and locks the positioning wheel through the cooperation of the ratchet wheel and the ratchet pawl.

[0008] In one or more embodiments, the ratchet pawl includes a ratchet pawl body, a first fixed shaft, a second fixed shaft, and an elastic connecting member. The first fixed shaft and the second fixed shaft are arranged on the placement platform. The ratchet pawl is rotatably connected to the placement platform through the first fixed shaft. The ratchet pawl has a first boss, the second fixed shaft has a second boss, and the two ends of the elastic connecting member are respectively arranged on the first boss and the second boss.

[0009] In one or more embodiments, the positioning wheel has an eccentric structure, an eccentric hole is formed in the positioning wheel, a connecting shaft is provided on the placement platform, and one end of the connecting shaft passes through the eccentric hole to enable rotatable connection between the positioning wheel and the placement platform.

[0010] In one or more embodiments, the positioning wheel is elliptical.

[0011] In one or more embodiments, the diameter range of the disk center hole is Ra to Rb, and the eccentricity of the positioning wheel is δ > (Ra - Rb) / 2.

[0012] In one or more embodiments, a plurality of mounting holes are formed in the placement platform, and the positioning wheel is rotatably mounted in the mounting holes through the connecting shaft.

[0013] In one or more embodiments, the connecting shaft is threadedly connected to the mounting hole.

[0014] Another object of the present invention is to provide a turbine disk storage device, which can achieve centering placement of turbine disks of different sizes, improve the placement safety of turbine disks, improve the versatility of the centering and limiting structure, and reduce the process cost.

[0015] The above-mentioned turbine disk storage device includes a tray and the turbine disk centering and limiting mechanism as described above. The turbine disk centering and limiting mechanism is arranged on the tray to perform centering and limiting on the turbine disk placed on the tray.

[0016] The above-mentioned turbine disk centering and limiting mechanism uses a multi-point centering method to perform centering and limiting on the turbine disk through the disk center hole of the turbine disk. A positioning wheel with an eccentric structure is adopted. During the rotation of the positioning wheel, the effective radius of the circumscribed circle changes, so that centering placement of turbine disks of different sizes can be achieved, the versatility of the centering and limiting mechanism is improved, and the process cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, properties, and advantages of the present invention will become more apparent from the following description in conjunction with the drawings and embodiments, where:

[0018] Figure 1 is a schematic structural diagram of a turbine disk according to an embodiment of the present application.

[0019] Figure 2 is a three-dimensional schematic diagram of centering placement of a turbine disk according to an embodiment of the present application.

[0020] Figure 3 is a top view schematic diagram of centering placement of a turbine disk according to an embodiment of the present application.

[0021] Figure 4 Schematic diagram of the maximum aperture turbine disk limit according to an embodiment of the present application.

[0022] Figure 5 Schematic diagram of the minimum aperture turbine disk limit according to an embodiment of the present application.

[0023] Figure 6 Top view schematic diagram of the turbine disk limit device according to an embodiment of the present application.

[0024] Figure 7 Stereoscopic schematic diagram of the turbine disk limit device according to an embodiment of the present application. Detailed implementation manners

[0025] The present invention will be further described below in conjunction with specific embodiments and the accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in many other ways different from this description. Those skilled in the art can make similar generalizations and deductions according to the actual application situation without departing from the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment. It should be noted that these and subsequent other drawings are only examples and are not drawn under conditions of equal scale, and should not be used to limit the actual required protection scope of the present invention.

[0026] According to one aspect of the present application, a turbine disk centering and limiting mechanism is provided, which can realize the centering placement of turbine disks 3 of different sizes, improve the placement safety of the turbine disks 3, improve the versatility of the centering and limiting structure, and reduce the process cost.

[0027] Refer to Figures 1 to 7 , the turbine disk centering and limiting mechanism includes a placement platform 2 and at least three positioning wheels 1 provided on the placement platform 2. The positioning wheels 1 are rotatably connected to the placement platform 2. Among them, by rotating the positioning wheels 1, the radius of the circumscribed circle formed by the outer rims of at least three positioning wheels 1 can be adjusted to realize the centering and limiting of the turbine disks 3 with different diameter center holes. In the placement state, the center hole of the turbine disk 3 is circumscribed to the outer rims of at least three positioning wheels 1.

[0028] The above-mentioned turbine disk centering and limiting mechanism uses a multi-point (at least three points) centering method to center and limit the turbine disk 3 through the center hole of the turbine disk 3. The positioning wheels 1 with an eccentric structure are adopted, and the effective radius of the circumscribed circle changes during the rotation of the positioning wheels 1, so as to realize the centering placement of turbine disks 3 of different sizes, improve the versatility of the centering and limiting mechanism, and reduce the process cost.

[0029] In one or more embodiments, the turbine disk centering and limiting mechanism further includes a limiting device 4 to limit and lock the angular position of the positioning wheels 1.

[0030] Furthermore, the positioning wheel 1 may be a ratchet, and the limiting device 4 may be a pawl, and the positioning wheel 1 is locked by the cooperation of the ratchet and the pawl. By providing a ratchet and pawl structure on the turbine disc centering limiting mechanism to lock the angular position of the positioning wheel 1, the positioning wheel 1 can maintain a stable squeezing state on the turbine disc 3 in the placed state, further improving the stability of the turbine disc 3 centering placement.

[0031] In Figure 4 and Figure 5 In a specific embodiment shown in the figure, the pawl includes a pawl body 41, a first fixed shaft 42, a second fixed shaft 43 and an elastic connecting member 44. The first fixed shaft 42 and the second fixed shaft 43 are arranged on the placement platform 2. The pawl body 41 is rotatably connected to the placement platform 2 through the first fixed shaft 42. A first boss 46 is arranged on the pawl body, and a second boss 45 is arranged on the second fixed shaft 43. Both ends of the elastic connecting member 44 are rotatably connected to the first boss 46 and the second boss 45 respectively.

[0032] Specifically, the pawl body 41 is connected to the placement platform 2 through the first fixed shaft 42, and the elastic connector 44 installed on the first boss 46 is connected to the second boss 45 on the second fixed shaft 43. The pawl body 41 is clamped into the groove of the ratchet wheel under the pulling force of the elastic connector 44, thereby realizing the angular position locking of the positioning wheel 1.

[0033] In actual operation, when the angular position of the positioning wheel 1 needs to be adjusted, the pawl body 41 can be moved in the opposite direction to release the locking state (i.e., the biting state) between the pawl and the ratchet wheel, and the positioning wheel 1 can be rotated to change the effective centering radius (i.e., the radius of the circumscribed circle formed by the outer rims of at least three positioning wheels 1) of the turbine disk centering limit mechanism to meet the centering placement of turbine disks 3 of different sizes. A simple rotation operation can achieve the centering placement of different turbine disks 3, which is simple to operate and has low process cost.

[0034] In one or more embodiments, the positioning wheel 1 is an eccentric structure, an eccentric hole is opened on the positioning wheel 1, and a connecting shaft 5 is provided on the placement platform 2. One end of the connecting shaft 5 passes through the eccentric hole to realize the rotatable connection between the positioning wheel 1 and the placement platform 2.

[0035] Among them, such as Figure 4 and Figure 5 As shown in FIG. 1 , the eccentric structure means that the rotation center A of the positioning wheel 1 is offset from the geometric center B of the positioning wheel 1 . By rotating the positioning wheel 1 , the radius of the circumscribed circle formed by the outer rims of at least three positioning wheels 1 can be adjusted, so that the turbine discs 3 with different diameters Ra and Rb can be placed in a centered manner on the placement platform 2 .

[0036] ​​​​In one or more embodiments, the positioning wheel 1 is oval-shaped, and the connecting shaft 5 is connected to the center of the positioning wheel 1. Similarly, by rotating the positioning wheel 1, the radius of the circumscribed circle formed by the outer rims of at least three positioning wheels 1 can be adjusted, so that centering placement of turbine disks 3 with different diameters on the placement platform 2 can be achieved.

[0037] In one or more embodiments, the diameter range of the disk center hole is Ra to Rb, and the eccentricity of the positioning wheel 1 is δ > (Ra - Rb) / 2. The eccentricity is the offset between the rotation center A of the positioning wheel 1 and the geometric center B of the positioning wheel 1, as Figure 5 shown.

[0038] In one or more embodiments, a plurality of mounting holes are provided on the placement platform 2. The positioning wheel 1 is rotatably mounted in the mounting holes through the connecting shaft 5. During the placement process of the turbine disk 3, a suitable mounting hole can be selected according to the size of the turbine disk 3 to be placed, the positioning wheel 1 is mounted in this mounting hole, and then the positioning wheel 1 is rotated so that its outer rim is tangent to the disk center hole of the turbine disk 3. By providing a plurality of mounting holes on the placement platform 2, rapid placement of turbine disks 3 with various diameters on the placement platform 2 can be achieved.

[0039] Furthermore, the connecting shaft 5 can be threadedly connected to the mounting hole, with firm connection and convenient loading and unloading.

[0040] According to another aspect of the present application, a turbine disk 3 storage device is provided, including a tray and the turbine disk centering and limiting mechanism as described above. The turbine disk centering and limiting mechanism is provided on the tray to perform centering and limiting on the turbine disk 3 placed on the tray, enabling centering placement of turbine disks 3 of different sizes, improving the placement safety of the turbine disk 3, enhancing the versatility of the centering and limiting structure, and reducing the process cost.

[0041] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "mounting", "connecting", "coupling", "fixing", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0042] Although the present invention is disclosed above in preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A turbine disc centering and limiting mechanism, characterized in that: It comprises a placement platform and at least three positioning wheels arranged on the placement platform, wherein the positioning wheels are rotatably connected to the placement platform; Among them, by rotating the positioning wheel, the radius of the circumscribed circle formed by the outer wheel rims of the at least three positioning wheels can be adjusted to achieve centering and limiting of the turbine disk with disk center holes of different diameters. In the placed state, the disk center hole of the turbine disk is circumscribed to the outer wheel rims of the at least three positioning wheels.

2. The turbine disc centering and limiting mechanism according to claim 1, characterized in that: The turbine disc centering and limiting mechanism further comprises a limiting device, through which the angular position of the positioning wheel is limited and locked.

3. The turbine disc centering and limiting mechanism according to claim 2, characterized in that: The positioning wheel is a ratchet wheel, and the limiting device is a pawl. The limiting device can limit and lock the positioning wheel through the cooperation between the ratchet wheel and the pawl.

4. The turbine disc centering and limiting mechanism according to claim 3, characterized in that: The pawl includes a pawl body, a first fixed shaft, a second fixed shaft and an elastic connecting member. The first fixed shaft and the second fixed shaft are arranged on the placing platform. The pawl is rotatably connected to the placing platform through the first fixed shaft. A first boss is arranged on the pawl body, and a second boss is arranged on the second fixed shaft. Both ends of the elastic connecting member are rotatably connected to the first boss and the second boss respectively.

5. The turbine disc centering and limiting mechanism according to claim 1, characterized in that: The positioning wheel is an eccentric structure, an eccentric hole is opened on the positioning wheel, a connecting shaft is arranged on the placement platform, and one end of the connecting shaft passes through the eccentric hole to realize the rotatable connection between the positioning wheel and the placement platform.

6. The turbine disc centering and limiting mechanism according to claim 1, characterized in that: The positioning wheel is oval in shape.

7. The turbine disc centering and limiting mechanism according to claim 1, characterized in that: The diameter range of the disk center hole is Ra-Rb, and the eccentricity of the positioning wheel is δ>(Ra-Rb) / 2.

8. The turbine disc centering and limiting mechanism according to claim 1, characterized in that: The placement platform is provided with a plurality of mounting holes, and the positioning wheels are rotatably mounted in the mounting holes via connecting shafts.

9. The turbine disc centering and limiting mechanism according to claim 8, characterized in that: The connecting shaft is threadedly connected in the mounting hole.

10. A turbine disk storage device, characterized in that: It comprises a tray and a turbine disk centering and limiting mechanism as claimed in any one of claims 1 to 9, wherein the turbine disk centering and limiting mechanism is arranged on the tray to center and limit the turbine disk placed on the tray.

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