Hub moving blade fixing device

Abstract

According to the hub moving blade fixing device, the annular fixing device is formed through end-to-end connection of the strap, the radius can be flexibly adjusted, the application range is widened, and meanwhile the operation process is simplified. When in use, the hub moving blade can be fixed only by correspondingly changing the length of the overlapped part of the two ends of the strap in end-to-end connection according to the radius of the circle where the end face of the hub moving blade is located and finally fixing by using the shaft pin. According to the arrangement, a long machining period is not needed any more, repeated disassembly caused by inaccurate machining is avoided, and therefore the quality of the movable blade is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of wheel hub processing, and particularly relates to a wheel hub moving blade fixing device. Background Art

[0002] Turbine blades are important components in turbine machinery (such as steam turbines, gas turbines, water turbines, etc.) that guide fluid to flow in a certain direction and drive the rotor to rotate. The blades installed on the housing are called stationary blades or guide vanes, and the blades installed on the rotor are called moving blades. The main body of the turbine blade is the blade body, and its size is related to the flow capacity of the turbine.

[0003] In the prior art, the hub-through turbine moving blades are inserted into the hub. After the old blades are removed, it is necessary to reversely map the newly manufactured shrink ring according to the size of the hub, and use the new shrink ring to perform axial positioning. Among them, the shrink ring has a complex manufacturing process. In order to ensure the positioning preparation and ensure that the blade will not move circumferentially when loose, the blade installation requires multiple assembly and processing of the shrink ring, which affects the repair period. In addition, multiple disassembly also affects the quality of the installation, which affects the overall processing quality of the moving blades. Utility Model Content

[0004] The utility model aims to provide a hub moving blade fixing device to solve the technical problems in the prior art of complex preparation process, long production cycle and multiple disassembly affecting the quality of moving blades.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A wheel hub rotor blade fixing device comprises a hoop, wherein the hoop is connected end to end to form an annular structure.

[0007] One end of the band is provided with a fixing assembly, and the other end of the band can be fixedly connected at the head and tail by locking the fixing assembly.

[0008] The band can be coaxially and fixedly sleeved on the hub rotor blade.

[0009] The utility model also has the following features:

[0010] Further, the fixing component is an axle pin;

[0011] A plurality of limiting teeth are evenly arranged on the inner wall of the hoop along the length direction, and the specifications of the limiting teeth match the shaft pin.

[0012] Furthermore, the detachable fixing assembly is fixedly mounted on one end of the hoop through a mounting frame.

[0013] Furthermore, an adhesive layer is provided between the hoop and the end faces of all the moving blades on the hub.

[0014] Furthermore, the hoop is a stainless steel hoop.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] (I) The hub moving blade fixing device of the utility model forms an annular fixing device by connecting the ends of the band, and can flexibly adjust the radius, thereby improving the scope of application and simplifying the operation process. When in use, it is only necessary to change the length of the overlapping part of the two ends of the band when the ends are connected according to the radius of the circle where the end face of the hub moving blade is located, and finally fix it with an axle pin to achieve the fixation of the hub moving blade. This setting no longer requires a lengthy processing period, and will not cause repeated disassembly due to inaccurate processing, thereby ensuring the quality of the moving blades.

[0017] (II) The hub moving blade fixing device of the utility model is provided with a plurality of limiting teeth. Through the limiting effect of the limiting teeth, when the end-to-end of the hoop is connected, it can only move forward but not backward, thereby further improving the installation strength, preventing the moving blade and the hoop from moving relative to each other, and improving stability, which is suitable for large-scale use and promotion in industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the hub moving blade fixing device of the utility model.

[0019] The meanings of the numbers in the figure are: 1. hoop; 2. axle pin; 3. mounting bracket; 4. limiting tooth. DETAILED DESCRIPTION

[0020] It should be noted that, unless otherwise specified, all components in the present invention are components known in the prior art, such as axle pins that are commonly used.

[0021] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0022] A hub rotor blade fixing device comprises a band 1, which is connected end to end to form an annular structure; a fixing assembly 2 is provided at one end of the band 1, and the other end of the band 1 can be fixedly connected end to end by locking the fixing assembly 2; the band 1 can be coaxially and fixedly sleeved on the hub rotor blade.

[0023] The band 1 can be coaxially fixedly sleeved on the hub rotor blades, and the inner ring of the band 1 coincides with the end faces of all the rotor blades on the hub.

[0024] When in use, it is only necessary to change the length of the overlapping portion of the two ends of the hoop when the ends are connected according to the radius of the circle where the end surface of the hub rotor blade is located, and finally fix it with the tightening fixing component 2 to achieve the fixation of the hub rotor blade.

[0025] This arrangement no longer requires lengthy processing time, nor does it require repeated disassembly due to inaccurate processing, thereby ensuring the quality of the moving blades.

[0026] In addition, the device can not only flexibly adjust the hub rotor blades of the same specification, but is also suitable for hub rotor blades of different specifications, and has the advantage of a wide range of applications.

[0027] Specifically, the fixing component 2 is an axle pin;

[0028] A plurality of limiting teeth 3 are evenly arranged on the inner wall of the band 1 along the length direction, and the specifications of the limiting teeth 3 match those of the axle pin.

[0029] During use, the limiting tooth 3 enters the axle pin, and under the effect of the limiting tooth, one end of the band 1 can only advance but not retreat, thereby achieving the purpose of locking. When disassembly is required, the band 1 can be loosened and removed by simply disassembling the axle pin.

[0030] As a preferred solution of this embodiment, the detachable fixing assembly 2 is fixedly mounted on one end of the hoop 1 through the mounting frame 4 to enhance the connection strength between the two.

[0031] As a preferred solution of this embodiment, an adhesive layer is provided between the band 1 and the end faces of all the moving blades on the hub.

[0032] Specifically, the bonding layer may use Tai 608 fixing glue.

[0033] Specifically, the band 1 is a stainless steel band.

Claims

1. A hub and rotor blade fixing device, characterized in that: The invention comprises a hoop (1), wherein the hoop (1) is connected end to end to form an annular structure; a fixing component (2) is provided at one end of the hoop (1), and the other end of the hoop (1) can be fixedly connected end to end by locking the fixing component (2); The band (1) can be coaxially and fixedly sleeved on the hub rotor blade; the fixing component (2) is an axle pin; A plurality of limiting teeth (3) are evenly arranged on the inner wall of the hoop (1) along the length direction, and the specifications of the limiting teeth (3) match those of the shaft pin; The fixing assembly (2) is fixedly mounted on one end of the band (1) via a mounting frame (4).

2. The hub and rotor blade fixing device according to claim 1, characterized in that: An adhesive layer is provided between the hoop (1) and the end faces of all the moving blades on the hub.

3. The hub and rotor blade fixing device according to claim 1, characterized in that: The hoop (1) is a stainless steel hoop.

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