An axial flow fan housing and a gearbox of a gearbox

Abstract

The present invention discloses an axial flow fan housing and a gearbox of a gearbox, belonging to the technical field of gearbox cooling, and is designed to solve the technical problems such as poor heat dissipation effect and low reliability of a high-speed shaft and a bearing. The axial flow fan housing of the gearbox covers an axial flow fan and is fixedly connected to a taper module of the gearbox. The axial flow fan housing of the gearbox comprises a guide cover, a support mesh plate and a housing body. The diameter of the guide cover gradually increases from the first end to the second end. A plurality of first mesh holes are arranged in the circumferential direction of the first end. The second end is connected to the support mesh plate. The support mesh plate is provided with second mesh holes and is connected to the housing body. The axial flow fan is placed in the space formed between the support mesh plate and the housing body. This axial flow fan housing enables good heat dissipation of the high-speed shaft and the bearing, and improves the reliability of the gearbox.

Description

Technical Field

[0001] The present invention relates to the technical field of gearbox cooling, and particularly to an axial flow fan housing and a gearbox of a gearbox. Background Art

[0002] The working environment of the gearbox of a cooling tower is humid, and the working temperature of the gearbox is relatively high. The surface temperatures of transmission parts, bearings and other components inside the gearbox can reach as high as 70°C - 80°C, which will inevitably affect the service life of transmission parts and bearings inside the gearbox. Currently, an axial flow fan is generally installed at the input shaft end to dissipate heat and cool the box body. However, due to the structure of the axial flow fan itself, there is no wind at the hub center, and the hub diameter is relatively large, generally similar to the cone module, which results in poor heat dissipation effect of the high-speed shaft and bearings and affects their reliability. Summary of the Invention

[0003] The purpose of the present invention is to provide an axial flow fan housing and a gearbox of a gearbox, which enables good heat dissipation effect of the high-speed shaft and bearings and improves the reliability of the gearbox.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] An axial flow fan housing of a gearbox, which is sleeved on the axial flow fan and fixedly connected to the cone module of the gearbox. The axial flow fan housing of the gearbox includes a guide cover, a support mesh plate and a housing body. The diameter of the guide cover gradually increases from the first end to the second end. A plurality of first mesh holes are provided in the circumferential direction of the first end. The second end is connected to the support mesh plate. The support mesh plate is provided with second mesh holes and is connected to the housing body. The axial flow fan is placed in the space formed between the support mesh plate and the housing body.

[0006] Optionally, the plurality of first mesh holes are arranged in multiple rows, and the multiple rows of first mesh holes are spaced along the axial direction of the guide cover.

[0007] Optionally, the axial flow fan housing of the gearbox further includes a support rod. The rod body of the support rod is connected to the side wall of the first end, and one end of the support rod is connected to the housing body.

[0008] Optionally, the housing body includes a mounting cover, an outer peripheral shell and a plurality of reinforcing plates. The circumferential end of the outer peripheral shell is fixedly connected to the mounting cover. A plurality of third mesh holes are provided in the mounting cover. The plurality of reinforcing plates are spaced along the circumferential direction of the mounting cover. A plurality of adjustment slots are provided on the outer peripheral shell. The support rod can be connected to the adjustment slots through a first connector.

[0009] Optionally, the adjustment slot is a long strip-shaped hole.

[0010] Optionally, the support rod is welded to the side wall of the first end.

[0011] Optionally, a flange edge is provided on the support mesh plate, and a mating hole is provided on the flange edge. The flange edge is connected to the inner peripheral wall of the housing body by passing through the mating hole via a connecting component.

[0012] Optionally, the connecting component includes a bolt and a nut. The bolt passes through the mating hole and is threadedly connected to the nut.

[0013] Optionally, the fairing is connected to the support mesh plate by a second connecting member.

[0014] A gearbox includes the axial flow fan housing of the gearbox.

[0015] The beneficial effects of the present invention compared with the prior art: The high-speed wind of the axial flow fan can dissipate heat from the upper surface and both side surfaces of the gearbox housing. The low-speed wind of the axial flow fan will not directly blow on the front side surface of the housing, causing energy loss. Since the diameter of the fairing gradually increases from the first end to the second end, and a plurality of first mesh holes are provided in the circumferential direction of the first end, and second mesh holes are provided on the support mesh plate, the high-speed wind of the axial flow fan can sequentially pass through the second mesh holes and the first mesh holes, thereby realizing the cooling of the high-speed shaft and the bearing, accelerating the heat dissipation power of the high-speed shaft and the bearing of the gearbox, and improving the reliability of the gearbox. In addition, the axial flow fan housing of the gear has a simple structure, does not affect the overall structure of the gearbox, and also saves costs. The housing body can also protect the safety of the staff. Description of the Drawings

[0016] Figure 1 is a cross-sectional view when the axial flow fan housing of the gearbox provided by the specific embodiment of the present invention covers the axial flow fan and is fixedly connected to the taper module of the gearbox;

[0017] Figure 2 is a schematic structural diagram of the axial flow fan housing of the gearbox provided by the specific embodiment of the present invention;

[0018] Figure 3 is a schematic structural diagram of the fairing provided by the specific embodiment of the present invention;

[0019] Figure 4 is a schematic structural diagram of the support mesh plate provided by the specific embodiment of the present invention;

[0020] Figure 5 is a schematic structural diagram of the housing body provided by the specific embodiment of the present invention.

[0021] Reference Signs:

[0022] 100, Axial flow fan; 200, Cone module; 1, Deflector; 11, First mesh hole; 12, Support rod; 2, Support mesh plate; 21, Second mesh hole; 22, Flange edge; 3, Housing body; 31, Mounting cover; 311, Third mesh hole; 32, Outer peripheral shell; 33, Reinforcement plate; 331, Adjustment groove. Detailed implementation manners

[0023] To make the technical problems solved by the present invention, the adopted technical solutions and the achieved technical effects clearer, the technical solutions of the present invention will be further described below with reference to the drawings and through specific implementation manners.

[0024] The following refers to Figures 1 to 5 Describe the specific structure of the axial flow fan housing of the gearbox in the embodiments of the present invention.

[0025] It should be noted in advance that the wind speed blown by the axial flow fan is directly proportional to the diameter. The larger the diameter, the faster the wind speed; the smaller the diameter, the slower the wind speed. Therefore, the wind speed near the bearing is relatively low, and there is even no wind at the center of the bearing. Hereinafter, high-speed wind and low-speed wind are used to describe the wind with different speeds blown by the axial flow fan.

[0026] As Figures 1 to 4 shown, this embodiment provides an axial flow fan housing of a gearbox, which is sleeved on the axial flow fan 100 and fixedly connected to the cone module 200 of the gearbox. The axial flow fan housing of the gearbox includes a deflector 1, a support mesh plate 2 and a housing body 3. The diameter of the deflector 1 gradually increases from the first end to the second end. A plurality of first mesh holes 11 are provided in the circumferential direction of the first end. The second end is connected to the support mesh plate 2. The support mesh plate 2 is provided with second mesh holes 21 and is connected to the housing body 3. The axial flow fan 100 is placed in the space formed between the support mesh plate 2 and the housing body 3.

[0027] It should be noted that the high-speed wind of the axial flow fan 100 can dissipate heat from the upper surface and both side surfaces of the gearbox housing. The low-speed wind of the axial flow fan 100 will not directly blow on the front side surface of the housing, causing energy loss. Since the diameter of the deflector 1 gradually increases from the first end to the second end, and a plurality of first mesh holes 11 are provided in the circumferential direction of the first end, the high-speed wind of the axial flow fan 100 can sequentially pass through the second mesh holes 21 and the first mesh holes 11, thereby realizing the cooling of the high-speed shaft and the bearing, accelerating the flow of hot air in the deflector 1, thereby improving the heat dissipation power of the high-speed shaft and bearing of the gearbox, and also improving the reliability of the gearbox. In addition, the axial flow fan housing structure of the gear is simple, does not affect the overall structure of the gearbox, and also saves costs. The housing body 3 can also protect the personal safety of the staff.

[0028] Optionally, as Figure 2 and Figure 3As shown, multiple first mesh holes 11 are arranged in multiple rows, and the multiple rows of first mesh holes 11 are spaced along the axial direction of the flow guide cover 1.

[0029] It can be understood that by arranging multiple rows of first mesh holes 11, the high-speed air of the axial flow fan 100 can pass through the multiple rows of first mesh holes 11 to contact the high-speed shaft and the bearing, thereby achieving the purpose of heat dissipation and cooling. In some embodiments of the present invention, the multiple first mesh holes 11 are arranged in three rows, which can not only meet the cooling effect on the high-speed shaft and the bearing, but also prevent some of the high-speed air from not reaching the high-speed shaft and the bearing, thus slowing down the heat dissipation effect. Of course, in other embodiments of the present invention, the number of rows of the multiple first mesh holes 11 can also be selected according to actual needs, such as two rows, four rows, etc.

[0030] Optionally, as Figure 3 shown, the housing of the axial flow fan 100 of the gearbox further includes a support rod 12. The rod body of the support rod 12 is connected to the side wall at the first end, and one end of the support rod 12 is connected to the housing body 3.

[0031] It should be noted that, first of all, the support rod 12 plays a role of connection and support, fixedly connecting the housing body 3 and the flow guide cover 1, strengthening the reliability of the housing of the axial flow fan 100 to a certain extent, avoiding loosening, and enhancing the stiffness. In addition, one end of the support rod 12 located inside the opening of the flow guide cover 1 can be connected to the taper module 200 of the gearbox.

[0032] Optionally, as Figure 5 shown, the housing body 3 includes a mounting cover 31, an outer peripheral shell 32, and multiple reinforcing plates 33. The circumferential end of the outer peripheral shell 32 is fixedly connected to the mounting cover 31. Multiple third mesh holes 311 are provided on the mounting cover 31. The multiple reinforcing plates 33 are spaced along the circumferential direction of the mounting cover 31. Multiple adjustment slots 331 are provided on the outer peripheral shell 32. The support rod 12 can be connected to the adjustment slots 331 through a first connector. It should be noted that the mounting cover 31 prevents the fingers of the staff from touching the high-speed rotating axial flow fan 100, playing a role in protecting the personal safety of the staff. In addition, multiple third mesh holes 311 are provided on the mounting cover 31, and the air of the axial flow fan 100 can pass through the third mesh holes 311, enhancing the heat dissipation and cooling effects to a certain extent. In addition, the multiple reinforcing plates 33 arranged along the circumferential direction of the mounting cover 31 play a role in reinforcement, improving the anti-fracture property of the housing body 3, thereby extending its service life. Finally, multiple adjustment slots 331 are provided on the outer peripheral shell 32, facilitating the adjustment of the axial distance between the mounting cover 31 and the support mesh plate 2, so as to adapt to axial flow fans 100 of different sizes.

[0033] Specifically, the multiple adjustment slots 331 are divided into multiple groups, with each group having at least two adjustment slots 331. The adjustment slots 331 in each group are arranged along the axial direction of the outer peripheral shell 32, facilitating the adjustment of the axial distance between the mounting cover 31 and the support mesh plate 2, thereby avoiding interference with the axial flow fan 100.

[0034] Optionally, the adjustment slot 331 is a long strip-shaped hole. It should be noted that the above-mentioned multiple adjustment slots 331 achieve the adjustment of the axial center distance between the mounting cover 31 and the support mesh plate 2 to a certain extent. Since the adjustment slot 331 is a long strip-shaped hole, more precise adjustment can be achieved to offset manufacturing errors. The combination of the long strip-shaped hole adjustment slot 331 and the multiple adjustment slots 331 achieves the effects of rough adjustment and fine adjustment.

[0035] Optionally, the support rod 12 is welded to the side wall of the first end. It can be understood that since the support rod 12 is welded to the side wall of the first end, the support rod 12 is firmly connected to the flow guide cover 1, and fixed connection can be achieved without the aid of other connecting parts, making it not easy to break, not easy to loosen, and having high strength.

[0036] Optionally, as Figure 4 shown, the support mesh plate 2 is provided with a flange edge 22, and the flange edge 22 is provided with a mating hole. The flange edge 22 is connected to the inner peripheral wall of the housing body 3 by passing through the mating hole with a connecting component. It can be understood that since the support mesh plate 2 is provided with a flange edge 22, it is more convenient to fixedly connect the support mesh plate 2 to the housing body 3, and it has high strength, is not easy to break, and is convenient for installation.

[0037] Optionally, the connecting component includes a bolt and a nut. The bolt passes through the mating hole and is threadedly connected to the nut. It can be understood that the support mesh plate 2 can be firmly connected to the housing body 3 through the combination of the bolt and the nut, with strong stability. In addition, the cost of the bolt and the nut is reduced, further reducing the production cost of the axial flow fan 100 housing of the gearbox.

[0038] Optionally, the flow guide cover 1 is connected to the support mesh plate 2 through a second connecting component. It should be noted here that the second connecting component can be a bolt, a screw, etc., which play a role in connection and reinforcement.

[0039] A gearbox includes the axial flow fan 100 housing of the gearbox. This gearbox realizes the cooling of the high-speed shaft and the bearing, accelerates the flow of hot air, improves the heat dissipation power of the high-speed shaft and the bearing of the gearbox, and also improves the reliability of the gearbox. In addition, the axial flow fan 100 housing of the gearbox has a simple structure, does not affect the overall structure of the gearbox, and also saves costs.

[0040] In the description of this specification, the descriptions referring to terms such as "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0041] In addition, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 thus should not be construed as a limitation to the present invention.

[0042] In the present invention, unless otherwise clearly defined and limited, terms such as "connected", "connected to", "installed", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, the features defined with "first", "second" can explicitly or implicitly include one or more of such features, used to distinguish and describe features, without order or importance. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0044] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, based on the idea of the present invention, there will be changes in the specific implementation manner and application scope, and the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An axial flow fan housing of a gearbox, which is sleeved on an axial flow fan (100) and fixedly connected to a cone module (200) of the gearbox, is characterized in that, The axial flow fan housing of the gearbox includes a guide cover (1), a support mesh plate (2) and a housing body (3). The diameter of the guide cover (1) gradually increases from the first end to the second end. A plurality of first mesh holes (11) are provided in the circumferential direction of the first end. The second end is connected to the support mesh plate (2). Second mesh holes (21) are provided on the support mesh plate (2) and are connected to the housing body (3). The axial flow fan (100) is placed in the space formed between the support mesh plate (2) and the housing body (3). A plurality of the first mesh holes (11) are arranged in multiple rows, and the multiple rows of the first mesh holes (11) are arranged at intervals along the axial direction of the guide cover (1). The high-speed wind of the axial flow fan (100) sequentially passes through the second mesh holes (21) and the first mesh holes (11), thereby cooling the high-speed shaft and the bearing. The high-speed wind of the axial flow fan (100) passes through the multiple rows of the first mesh holes (11) to contact the high-speed shaft and the bearing. It further includes a support rod (12). The rod body of the support rod (12) is connected to the side wall of the first end, and one end of the support rod (12) is connected to the housing body (3).

2. The axial flow fan housing of the gearbox according to claim 1, characterized in that, The housing body (3) includes a mounting cover (31), an outer peripheral shell (32) and a plurality of reinforcing plates (33). The circumferential end of the outer peripheral shell (32) is fixedly connected to the mounting cover (31). A plurality of third mesh holes (311) are provided on the mounting cover (31). The plurality of reinforcing plates (33) are arranged at intervals along the circumferential direction of the mounting cover (31). A plurality of adjustment slots (331) are provided on the outer peripheral shell (32). The support rod (12) can be connected in the adjustment slots (331) through a first connecting member.

3. The axial flow fan housing of the gearbox according to claim 2, characterized in that, The adjustment slot (331) is a long strip-shaped hole.

4. The axial flow fan housing of the gearbox according to claim 1, characterized in that, The support rod (12) is welded to the side wall of the first end.

5. The axial flow fan housing of the gearbox according to claim 1, characterized in that, A flange edge (22) is provided on the support mesh plate (2). Matching holes are provided on the flange edge (22). The flange edge (22) is sleeved in the matching holes through a connecting assembly to be connected to the inner peripheral wall of the housing body (3).

6. The axial flow fan housing of the gearbox according to claim 5, characterized in that The connecting assembly includes a bolt and a nut. The bolt is sleeved in the matching hole and is threadedly connected to the nut.

7. The axial flow fan housing of the gearbox according to claim 1, characterized in that, The guide cover (1) is connected to the support mesh plate (2) through a second connecting member.

8. A gearbox, characterized in that, It includes the axial flow fan housing of the gearbox according to any one of claims 1-7.

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