Double-bearing structure fan shaft component assembly with excellent dustproof performance

Abstract

The fan shaft component assembly with the double-bearing structure has excellent dustproof performance and comprises a belt pulley, a cylindrical boss is arranged at the center of the belt pulley, a cylindrical through hole is formed in the cylindrical boss along the axis, a fan shaft is inserted into the inner side of the cylindrical through hole, a bearing II is sleeved on the outer side of the top of the fan shaft, and the bearing II is sleeved on the outer side of the top of the fan shaft. According to the fan shaft component, the fan shaft component can bear the use working conditions of high radial loads and high axial loads in the working process, meanwhile, the front end and the rear end of the fan shaft component are both provided with dustproof design, dust, mud and other impurities entering the bearings can be effectively reduced, the service life of the fan shaft component is prolonged, and the service life of the fan shaft component is prolonged. And the device has the advantages of long service life and low failure rate.

Description

Technical Field

[0001] The utility model relates to the technical field of fan shafts, in particular to a fan shaft component assembly with a double-bearing structure and excellent dustproof performance. Background Art

[0002] In the modern industrial field, the performance and durability of the engine are crucial to the overall operating efficiency of the equipment. However, with the advancement of technology and the continuous expansion of application scenarios, the operating conditions of the engine are becoming increasingly harsh, which poses higher challenges to all components of the engine. Especially at the front end of the engine, the fan is a key component to reduce the engine temperature, and its design and performance have attracted much attention.

[0003] In order to adapt to more demanding working environments, the fan design at the front end of the engine is evolving towards heavier weight and larger diameter. This evolution is aimed at dissipating heat more effectively by increasing the fan's blade area and rotation speed, thereby ensuring that the engine can operate stably under high temperature and high load conditions. However, this evolution has also brought unprecedented challenges to the fan shaft components.

[0004] The traditional single bearing structure is unable to withstand high radial and high axial loads. As the weight of the fan increases and the speed increases, the pressure and impact force on the bearing are also increasing. This high pressure and impact will not only cause the bearing to wear more, but also cause the bearing to deform and loosen, which will seriously affect the stability and reliability of the fan shaft components.

[0005] As the core component of the fan shaft, the life of the bearing directly determines the life of the fan shaft. Although modern bearing designs have high dust and sealing performance, they are often filled with a lot of dust and mud in some harsh operating environments, such as mines and construction sites. Once these impurities invade the inside of the bearing, they will damage the bearing's lubrication system and material properties, causing the bearing to fail in a short time.

[0006] The failure of the bearing will not only affect the cooling effect of the fan, but may also cause serious damage to the entire engine system. Therefore, how to improve the dustproof and sealing performance of the bearing and enhance the bearing's load-bearing capacity and durability has become an urgent problem to be solved in the current engine design field. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, the utility model solves the problem in the prior art that the fan is used in a harsh environment and impurities are easily invaded into the interior of the bearing.

[0008] A fan shaft component assembly with a double-bearing structure and excellent dustproof performance comprises a pulley, a cylindrical boss is arranged at the center of the pulley, a cylindrical through hole is arranged along the axis of the cylindrical boss, a fan shaft is inserted into the inner side of the cylindrical through hole, a bearing II is sleeved on the outer side of the top of the fan shaft, the outer side of the bearing II is the inner hole of the pulley, and the bearing II is clamped through the hole by an elastic retaining ring.

[0009] Furthermore, grooves are provided on both side end faces of the cylindrical boss at the center of the pulley.

[0010] Furthermore, it also includes a bearing I sleeved on the outer side of the fan shaft root, a spacer sleeve I is arranged between the bearing I and the bearing II, a rear dust cover is also arranged on the outer side of the bearing I, and a spacer sleeve II is also arranged between the bearing I and the rear dust cover.

[0011] Furthermore, a pressure plate is provided on the top of the fan shaft, the pressure plate is fixed to the fan shaft by bolts, and a front dust cover is provided between the pressure plate and the fan shaft.

[0012] Furthermore, the outer rings of the bearing I and the bearing II are interference fit with the inner hole of the pulley.

[0013] Furthermore, the rear dust cover and the left groove of the pulley, and the front dust cover and the right groove of the pulley all form a labyrinth dustproof structure.

[0014] Furthermore, the bearing I is preferably a single-row spherical roller bearing, and the bearing II is preferably a double-row tapered roller bearing.

[0015] Beneficial effects of the utility model:

[0016] The present application enables the fan shaft component to withstand high radial and high axial load conditions during operation. At the same time, the fan shaft component has dust-proof designs at the front and rear ends, which can effectively reduce dust, mud and other impurities from entering the bearing, giving it the advantages of long service life and low failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A cross-sectional structural diagram of a fan shaft component assembly with a double-bearing structure having excellent dustproof performance;

[0018] Figure 2 A schematic diagram of the structure of a fan shaft component assembly with a double-bearing structure having excellent dustproof performance;

[0019] Figure 3 A three-dimensional schematic diagram of a fan shaft of a fan shaft component assembly with a double-bearing structure having excellent dustproof performance;

[0020] Figure 4 A magnified view of the labyrinth dustproof structure formed by the groove on the left side of the pulley and the rear dust cover;

[0021] Figure 5 An enlarged view of the labyrinth dustproof structure formed by the groove on the right side of the pulley and the front dust cover.

[0022] In the figure: 1-pulley; 2-fan shaft; 3-spacer I; 4-spacer II; 5-rear dust cover; 6-bearing I; 7-front dust cover; 8-pressure plate; 9-bolt; 10-bearing II; 11-elastic retaining ring for hole. DETAILED DESCRIPTION

[0023] The following is an explanation of the implementation of the present invention by specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to the implementation. On the contrary, the purpose of introducing the utility model in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details will be included in the following description. The present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. It should be noted that in this specification, similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures.

[0024] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "set", "connected", "connected" and the like 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 an indirect connection through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances. The directions or positional relationships indicated by “upper”, “lower”, “left”, “right”, “inner”, “bottom”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the utility model.

[0025] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] In this embodiment, as shown in the attached Figure 1-5 As shown, a fan shaft component assembly with a double-bearing structure and excellent dust-proof performance includes a pulley 1, a cylindrical boss is arranged at the center of the pulley 1, a cylindrical through hole is arranged along the axis of the cylindrical boss, a fan shaft 2 is inserted into the inner side of the cylindrical through hole, a bearing II10 is sleeved on the outer side of the top of the fan shaft 2, the outer side of the bearing II10 is the inner hole of the pulley 1, the bearing II10 is clamped through the hole with an elastic retaining ring 11, the pulley 1 has a fan gasket positioning step for positioning the fan gasket and the fan, and the flange surface has a threaded hole for mounting the fan on the fan shaft component.

[0027] Furthermore, grooves are provided on both side end faces of the cylindrical boss at the center of the pulley 1 .

[0028] Furthermore, a bearing I6 is sleeved on the outer side of the root of the fan shaft 2, a spacer sleeve I3 is arranged between the bearing I6 and the bearing II10, a rear dust cover 5 is also arranged on the outer side of the bearing I6, and a spacer sleeve II4 is also arranged between the bearing I6 and the rear dust cover 5.

[0029] Furthermore, a pressure plate 8 is provided on the top of the fan shaft 2 , and the pressure plate 8 is fixed to the fan shaft 2 by bolts 9 . A front dust cover 7 is provided between the pressure plate 8 and the fan shaft 2 .

[0030] Furthermore, the outer rings of the bearing I3 and the bearing II10 are interference fit with the inner hole of the pulley 1.

[0031] Furthermore, the rear dust cover 5 and the groove 12 on the left side of the pulley, and the front dust cover 7 and the groove 13 on the right side of the pulley all form a labyrinth dustproof structure.

[0032] Furthermore, the bearing I6 is preferably a single-row spherical roller bearing, and the bearing II10 is preferably a double-row tapered roller bearing, and other types of bearings may also be selected.

[0033] Furthermore, the material of the spacer I3 and the spacer II4 is preferably 45-GB / T699-2015, and may also be other metal materials.

[0034] Beneficial effects of the utility model:

[0035] The present application enables the fan shaft component to withstand high radial and high axial load conditions during operation. At the same time, the fan shaft component has dust-proof designs at the front and rear ends, which can effectively reduce dust, mud and other impurities from entering the bearing, giving it the advantages of long service life and low failure rate.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fan shaft component assembly with a double-bearing structure having excellent dustproof performance, characterized in that: The invention comprises a pulley (1), wherein a cylindrical boss is arranged at the center of the pulley (1), a cylindrical through hole is arranged along the axis of the cylindrical boss, a fan shaft (2) is inserted into the inner side of the cylindrical through hole, a bearing II (10) is sleeved on the outer side of the top of the fan shaft (2), the outer side of the bearing II (10) is the inner hole of the pulley (1), and the bearing II (10) is clamped through the hole by an elastic retaining ring (11).

2. A fan shaft component assembly with a double-bearing structure having excellent dustproof performance according to claim 1, characterized in that: Both side end surfaces of the cylindrical boss at the center of the pulley (1) are provided with grooves.

3. The fan shaft component assembly with a double-bearing structure having excellent dustproof performance according to claim 1, characterized in that: A bearing I (6) is sleeved on the outside of the root of the fan shaft (2), a spacer sleeve I (3) is arranged between the bearing I (6) and the bearing II (10), a rear dust cover (5) is also arranged on the outside of the bearing I (6), and a spacer sleeve II (4) is also arranged between the bearing I (6) and the rear dust cover (5).

4. A fan shaft component assembly with a double-bearing structure having excellent dustproof performance according to claim 3, characterized in that: A pressure plate (8) is also provided on the top of the fan shaft (2), and the pressure plate (8) is fixed to the fan shaft (2) via bolts (9). A front dust cover (7) is also provided between the pressure plate (8) and the fan shaft (2).

5. The fan shaft component assembly with a double-bearing structure having excellent dustproof performance according to claim 3, characterized in that: The outer rings of the bearing I (6) and the bearing II (10) are interference fit with the inner hole of the pulley (1).

6. A fan shaft component assembly with a double-bearing structure having excellent dustproof performance according to claim 4, characterized in that: The rear dust cover (5) and the groove on the left side of the belt pulley, and the front dust cover (7) and the groove on the right side of the belt pulley all form a labyrinth dustproof structure.

7. A fan shaft component assembly with a double bearing structure having excellent dustproof performance according to claim 3, characterized in that: The bearing I (6) is a single-row spherical roller bearing, and the bearing II (10) is a double-row tapered roller bearing.

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