A fan shaft test fixture

Abstract

This utility model relates to a fan shaft test fixture, comprising: a support assembly including two spaced-apart and aligned support columns; a first bearing assembly including a first carrier plate mounted on the sides of the two support columns and a first bearing sleeve mounted on the outer surface of the first carrier plate; and a second bearing assembly including a second carrier plate mounted on the other side of the two support columns and a second bearing sleeve mounted on the inner surface of the second carrier plate and extending toward the first bearing assembly, wherein the second bearing sleeve is coaxially arranged with the first bearing sleeve. This ensures that the fan shaft is tightly fitted and precisely horizontal.

Description

Technical Field

[0001] This utility model belongs to the field of tooling and fixture technology, and relates to a fixture, specifically a fan shaft test fixture. Background Technology

[0002] A fan is an electrical appliance that uses an electric motor to drive the fan blades to rotate, thereby accelerating air circulation. It is mainly used for cooling and air circulation, and is widely used in homes, classrooms, offices, shops, hospitals, and hotels. The fan blades rotate because the fan's shaft drives them.

[0003] like Figure 1 The fan shaft shown includes a shaft body 1', a first convex ring 2' formed on the circumferential surface of the shaft body 1', a second convex ring 3' formed on the circumferential surface of the shaft body 1', and a third convex ring 4' formed on the circumferential surface of the second convex ring 3'. The diameter of the second convex ring 3' is larger than the diameter of the first convex ring 2', forming a stepped portion between the first convex ring 2' and the shaft body 1', and between the first convex ring 2' and the second convex ring 3'. To perform static tests on the fan shaft, a corresponding test fixture is required to securely clamp the fan shaft; however, existing test fixtures are prone to wobbling and other defects when clamping the fan shaft due to poor fit. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fan shaft test fixture.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a fan shaft test fixture, comprising: A support assembly, the support assembly comprising two support columns spaced apart and aligned; The first load-bearing component includes a first carrier plate installed on the sides of the two support columns and a first load-bearing sleeve installed on the outer surface of the first carrier plate. The second bearing assembly includes a second carrier plate installed on the other side of the two support columns and a second bearing sleeve installed on the inner surface of the second carrier plate and extending toward the first bearing assembly. The second bearing sleeve is coaxially arranged with the first bearing sleeve.

[0006] Optimally, the support column includes a column body, end plates formed on both ends of the column body, and multiple reinforcing plates formed on the side of the column body and extending to the end plates, each end plate having multiple first mounting holes surrounding the column body.

[0007] Furthermore, the projected area of ​​the column body on the surface of the end plate is smaller than the area of ​​the end plate surface.

[0008] Ideally, the outer diameter of the second bearing sleeve is smaller than the outer diameter of the first bearing sleeve, and the inner diameter of the second bearing sleeve is smaller than the inner diameter of the first bearing sleeve.

[0009] Furthermore, the first support sleeve includes at least a first substrate and a first body formed on the surface of the first substrate, wherein the first substrate has a second mounting hole surrounding the first body for mounting a first fastener.

[0010] Furthermore, the first bearing sleeve also includes a plurality of first weight-reducing holes that are equally spaced on the circumferential surface of the first sleeve body, a first limiting hole on the outer end face of the first sleeve body, and a first supporting protrusion ring extending inward at the edge of the first limiting hole on the first sleeve body.

[0011] Furthermore, the second support sleeve includes at least a second substrate and a second body formed on the surface of the second substrate, wherein the second substrate has a third mounting hole surrounding the second body for mounting a second fastener.

[0012] Furthermore, the second bearing sleeve also includes a plurality of second weight-reducing holes that are opened on the circumferential surface of the second sleeve body and are equally spaced apart. The outer end face of the second sleeve body has a second limiting hole, and the second sleeve body has an inwardly extending second support protrusion at the edge of the second limiting hole.

[0013] Furthermore, a plurality of protruding keys corresponding to the second supporting protruding ring are formed on the outer end face of the second body.

[0014] The beneficial effects of this application are: the fan shaft test fixture of this utility model, by installing a first bearing component and a second bearing component with a specific structure on the support component, uses the first bearing sleeve and the second bearing sleeve to support the outer peripheral surface of the fan shaft respectively, so that the fan shaft is tightly fitted and in a precise horizontal state. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the fan shaft structure; Figure 2 This is a schematic diagram of the structure of the fan shaft test fixture of this utility model; Figure 3 This is a schematic diagram of the supporting column in the fan shaft test fixture of this utility model; Figure 4 This is a schematic diagram of the structure of the first bearing sleeve in the fan shaft test fixture of this utility model; Figure 5 This is a schematic diagram of the structure of the second bearing sleeve in the fan shaft test fixture of this utility model. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0017] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0018] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0019] like Figure 2 The fan shaft test fixture shown mainly includes a matching support assembly, a first load-bearing assembly 2, and a second load-bearing assembly 3.

[0020] The support assembly includes two spaced and aligned support columns 1. Specifically, each support column 1 includes a column body 11, end plates 12 formed on both ends of the column body 11 (the forming method can be conventional, such as welding or integral molding, hereinafter the same), and multiple reinforcing plates 13 formed on the sides of the column body 11 and extending to the end plates 12 (the multiple reinforcing plates 13 are divided into two groups and formed at both ends of the column body 11; in this embodiment, there are eight reinforcing plates 13 divided into two groups, and each group of reinforcing plates 13 is formed on each side of the column body 11 in a one-to-one correspondence). At this time, each end plate 12 has multiple first mounting holes 121 surrounding the column body 11, and conventional fasteners can be installed in each first mounting hole 121 to install the support column 1 on the ground or on other related test structures. In this embodiment, the projected area of ​​the column body 11 on the surface of the end plate 12 is smaller than the surface area of ​​the end plate 12. This increases the contact area between the column body 11 and other structures through the end plate 12, thereby improving the installation stability of the support column 1.

[0021] The first support assembly 2 includes a first carrier plate 21 mounted on the sides of the two support columns 1 (i.e., the first carrier plate 21 is mounted on the sides of the two support columns 1 using conventional fasteners) and a first support sleeve 22 mounted on the outer surface of the first carrier plate 21. In this embodiment, the first support sleeve 22 includes a first substrate 221 and a first body 222 formed on the surface of the first substrate 221. The first substrate 221 has second mounting holes 223 surrounding the first body 222 for mounting the first fasteners. Specifically, the center of the outer surface of the first carrier plate 21 is recessed inward to form a first groove that mates with the first substrate 221 (the depth of the first groove is preferably equal to the thickness of the first substrate 221). By installing the first fasteners in each of the second mounting holes 223, the support sleeve 22 is mounted on the first carrier plate 21, so that the first substrate 221 is embedded in the first carrier plate 21. The first bearing sleeve 22 also includes a plurality of first weight-reducing holes 224 (preferably 14 to 18) that are equally spaced on the circumferential surface of the first body 222. The outer end face of the first body 222 has a first limiting hole 225. The first body 222 forms an inwardly extending first support protrusion 226 at the edge of the first limiting hole 225 (that is, the first support protrusion 226 extends inwardly at the center of the outer end face of the first body 222). Specifically, the first body 222 itself is hollow, and a through hole is also provided at the center of the first substrate 221 to ensure that the fan shaft can pass through, and the first support protrusion 226 contacts the circumferential surface of the fan shaft to effectively support it.

[0022] The second support assembly 3 includes a second carrier plate 31 installed on the other side of the two support columns 1 and a second support sleeve 32 installed on the inner surface of the second carrier plate 31 and extending toward the first support assembly 2. The second support sleeve 32 is coaxially arranged with the first support sleeve 22. The structure of the second support sleeve 32 is basically the same as that of the first support sleeve 22. For example, the second support sleeve 32 also includes a second base plate 321 and a second body 322 formed on the surface of the second base plate 321. The second base plate 321 has third mounting holes 323 surrounding the second body 322 for installing second fasteners. The second support sleeve 32 also includes a plurality of second weight-reducing holes 324 (preferably 12 to 14, fewer than the number of first weight-reducing holes 224) opened on the circumference of the second body 322 and evenly spaced. The outer end face of the second body 322 has a second limiting position. The second body 322 has an inwardly extending second support ring 326 formed at the edge of the second limiting hole 325 (the axial length of the second support ring 326 is greater than the axial length of the first support ring 226). At this time, the second support ring 326 also contacts the circumferential surface of the fan shaft. Thus, the cooperation of the second support ring 326 and the first support ring 226 ensures that the fan shaft is tightly fitted and in a precise horizontal state (at this time, conventional snap rings or key pins can be used to assist in connecting the fan shaft to the fan shaft test fixture to limit the axial movement of the fan shaft on the fan shaft test fixture). The difference is that the outer diameter of the second bearing sleeve 32 is smaller than the outer diameter of the first bearing sleeve 22, and the inner diameter of the second bearing sleeve 32 is smaller than the inner diameter of the first bearing sleeve 22. In addition, a plurality of protruding keys 327 (protruding in the direction away from the second support protruding ring 326) are formed on the outer end face of the second body 322. In this way, when there is a concave hole on the fan shaft, the plurality of protruding keys 327 can be inserted into the corresponding concave hole to avoid rotation that may occur when the fan shaft is subjected to force.

[0023] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fan shaft test fixture characterized by, It includes: A support assembly comprising two spaced and aligned support columns (1). The first bearing component (2) includes a first carrier plate (21) installed on the sides of the two support columns (1) and a first bearing sleeve (22) installed on the outer surface of the first carrier plate (21). The second bearing assembly (3) includes a second carrier plate (31) installed on the other side of the two support columns (1) and a second bearing sleeve (32) installed on the inner surface of the second carrier plate (31) and extending toward the first bearing assembly (2). The second bearing sleeve (32) is coaxially arranged with the first bearing sleeve (22).

2. The fan shaft test fixture of claim 1, wherein: The supporting column (1) includes a column body (11), end plates (12) formed on both ends of the column body (11), and multiple reinforcing plates (13) formed on the side of the column body (11) and extending to the end plates (12). Each end plate (12) has multiple first mounting holes (121) surrounding the column body (11).

3. The fan shaft test fixture of claim 2, wherein: The projected area of ​​the column body (11) on the surface of the end plate (12) is smaller than the area of ​​the surface of the end plate (12).

4. The fan shaft test fixture of claim 1, wherein: The outer diameter of the second bearing sleeve (32) is smaller than the outer diameter of the first bearing sleeve (22), and the inner diameter of the second bearing sleeve (32) is smaller than the inner diameter of the first bearing sleeve (22).

5. The fan shaft test fixture of claim 1 or 4, wherein: The first support sleeve (22) includes at least a first substrate (221) and a first body (222) formed on the surface of the first substrate (221). The first substrate (221) has a second mounting hole (223) surrounding the first body (222) for mounting a first fastener.

6. The fan shaft test fixture of claim 5, wherein: The first bearing sleeve (22) further includes a plurality of first weight-reducing holes (224) that are opened on the circumferential surface of the first sleeve body (222) and are equally spaced. The outer end face of the first sleeve body (222) has a first limiting hole (225). The first sleeve body (222) has an inwardly extending first support protrusion ring (226) formed at the edge of the first limiting hole (225).

7. The fan shaft test fixture of claim 1 or 4, wherein: The second support sleeve (32) includes at least a second substrate (321) and a second body (322) formed on the surface of the second substrate (321). The second substrate (321) has a third mounting hole (323) surrounding the second body (322) for mounting a second fastener.

8. The fan shaft test fixture of claim 7, wherein: The second bearing sleeve (32) also includes a plurality of second weight-reducing holes (324) that are opened on the circumferential surface of the second body (322) and are equally spaced. The outer end face of the second body (322) has a second limiting hole (325). The second body (322) has an inwardly extending second support protrusion (326) at the edge of the second limiting hole (325).

9. The fan shaft test fixture of claim 8, wherein: The outer end face of the second body (322) has a plurality of protruding keys (327) corresponding to the second support protruding ring (326).

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