An adjustable mounting position fan drive assembly

Abstract

This utility model discloses an adjustable fan drive assembly, including a fan bracket, a fan hub, and connecting bolts. The fan bracket has multiple mounting holes for adjusting the connection position with the fan hub. A fan hub shaft is located inside the fan hub, and a fan pulley is mounted on this shaft, connected to a bearing pad via two rolling bearings. The outer ring of each rolling bearing is interference-fitted with the inner bore of the fan pulley. Oil seals and stops are provided at both ends of the bearings to form a sealing structure. A pressure plate is fixed to the end face of the fan pulley with bolts to enhance sealing and protection performance. This utility model has advantages such as compact structure, adjustable installation position, reliable sealing, and strong load-bearing capacity, and is suitable for fan drive applications in various vehicle configurations.

Description

Technical Field

[0001] This utility model relates to the field of fan drive assembly technology, and in particular to a fan drive assembly with an adjustable mounting position. Background Technology

[0002] With the continuous upgrading and diversification of automotive engine platforms, different vehicle configurations place higher demands on the layout space and installation methods of engine cooling systems. Traditional fan drive assemblies are typically fixed structures with limited mounting interfaces and connection methods, making them unable to be flexibly adjusted according to differences in vehicle structure, resulting in poor versatility and limited adaptability.

[0003] In addition, most existing fan drive assemblies are not specifically designed for high-temperature and high-load conditions. They generally suffer from problems such as dust ingress into bearings, grease leakage, and loosening of axial locking structures. During long-term operation, they are prone to bearing failure, increased drive noise, and component wear, which seriously affect the reliability and maintenance costs of the vehicle's cooling system.

[0004] Therefore, there is an urgent need to provide a new type of fan drive assembly that is structurally reliable, flexible in installation, and highly adaptable to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a fan drive assembly with an adjustable installation position to solve the problem of the single configuration of fan drive assemblies in the prior art.

[0006] This utility model is achieved using the following technical solution: an adjustable fan drive assembly, characterized in that it includes a fan bracket, a fan hub, and connecting bolts; the fan bracket and the fan hub are connected by multiple mounting holes and the connecting bolts, the multiple mounting holes being disposed on the fan bracket for adjusting the mounting position of the fan bracket relative to the fan hub; a fan hub shaft is provided inside the fan hub, and a fan pulley is fitted onto the fan hub shaft; the fan pulley and the fan hub shaft are assembled by at least two rolling bearings, a bearing pad is provided between the two rolling bearings, and the outer ring of the rolling bearing is interference-fitted with the inner hole of the fan pulley; a limiting structure is provided at one axial end of the fan hub shaft, and the other end is axially locked to the inner ring of the rolling bearing by a locking assembly; a sealing structure is provided at one end of the fan pulley, and a dustproof structure is provided at the other end; a pressure plate is fixed to the end face of the fan pulley by bolts to enhance the sealing and protection effect.

[0007] Furthermore, the multiple mounting holes are arranged in a ring or array on the fan bracket to adapt to the installation requirements of different engine models or vehicle platforms.

[0008] Furthermore, the rolling bearing is an open single-row tapered roller bearing, which is filled with grease during installation and sealed with oil seals and stops.

[0009] Furthermore, the bearing pad is disposed between the inner rings of the two rolling bearings for spaced positioning and to improve assembly stability.

[0010] Furthermore, the pressure plate is fixed to the end face of the fan pulley by at least two hexagonal bolts to form an end clamping effect on the sealing structure.

[0011] Furthermore, the limiting structure of the fan hub shaft is a stepped surface provided at the shaft end, and the locking assembly includes a flat washer and a locking nut.

[0012] Furthermore, the sealing structure includes an oil seal disposed in the inner hole on the right side of the fan pulley, and the dustproof structure includes a stop block disposed in the inner hole on the left side of the fan pulley.

[0013] The adjustable fan drive assembly described in this utility model has the following advantages:

[0014] The fan bracket is equipped with multiple mounting holes, and the position can be adjusted by connecting bolts at different holes, which can adapt to the structure of various vehicle models and improve modular assembly capabilities.

[0015] The machine employs a combination of double single-row tapered roller bearings, spacers, and bearing pads to improve the overall radial and axial load-bearing capacity.

[0016] Oil seals and baffles are installed on both sides of the bearing, and the end face is sealed by a pressure plate to effectively prevent grease leakage and foreign matter intrusion, thereby improving service life.

[0017] The inner ring of the bearing is press-fitted and axially limited by the cooperation of a flat washer and a lock nut, which prevents the structure from loosening during operation.

[0018] By unifying the design of the bracket and hub connection, the shared needs of different platforms can be met, reducing development and maintenance costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a fan drive assembly with an adjustable mounting position.

[0021] Figure 2 A cross-sectional view of the fan hub of a fan drive assembly with an adjustable mounting position;

[0022] Figure 3 Schematic diagram of high-position installation of the fan hub;

[0023] Figure 4 Schematic diagram of low-position installation of the fan hub;

[0024] Figure 5 This is an enlarged view of the seal structure of the left bearing;

[0025] Figure 6 This is an enlarged view of the right-side bearing seal structure;

[0026] In the diagram, 1-fan bracket; 2-fan hub; 3-M16 hexagonal flange bolt; 4-fan hub shaft; 5-fan pulley; 6-pressure plate; 7-shield; 8-bearing pad; 9-stop block; 10-flat washer; 11-oil seal; 12-single-row tapered roller bearing; 13-lock nut; 14-internal hexagonal bolt. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example

[0029] like Figure 1-3 As shown, this embodiment provides a fan drive assembly with an adjustable installation position, including a fan bracket 1, a fan hub 2, an M16 hexagonal flange bolt 3, a fan hub shaft 4, a fan pulley 5, a pressure plate 6, a pad 7, a bearing pad 8, a stop block 9, a flat washer 10, an oil seal 11, a single-row tapered roller bearing 12, a lock nut 13, and an internal hexagonal bolt 14.

[0030] Specifically, the fan bracket 1 is a plate-shaped structure with five sets of bolt mounting holes evenly distributed on it, each set containing two symmetrically arranged mounting holes. The fan bracket 1 is connected to the fan hub 2 via M16 hexagonal flange bolts 3. Users can select different sets of hole positions according to the installation space of different vehicle models to achieve adaptable installation of the assembly in different configuration models, enhancing versatility and modular assembly efficiency.

[0031] The fan hub 2 has a fan hub shaft 4 inside, and the fan pulley 5 is assembled on the fan hub shaft 4 through a bearing structure. The fan hub shaft 4 adopts a stepped structure design at both ends. The upper step is used to press the bearing and lock nut structure, and the lower step is provided with a high temperature resistant and high strength pad 7. The end face of the pad 7 fits against the end face of the single row tapered roller bearing 12 to enhance the bearing positioning rigidity.

[0032] A bearing spacer 8 is provided between two single-row tapered roller bearings 12 to control the spacing between the inner rings of the bearings. The outer ring of the single-row tapered roller bearing 12 is interference-fitted with the inner bore of the fan pulley 5 to form a high-rigidity connection. An oil seal 11 is provided on the outer side of the right bearing, and a stop block 9 is provided on the outer side of the left bearing. These two components work together to prevent grease leakage during operation, improving the cleanliness and lifespan stability of the system.

[0033] A flat washer 10 and a locking nut 13 are installed at the top of the fan hub shaft 4. The inner ring of the bearing is clamped and locked in the axial direction by the flat washer 10 and the locking nut 13 to prevent loosening or axial movement during operation. The left end of the fan pulley 5 is fastened with a pressure plate 6 to its end face by two hexagon socket head cap screws 14 to improve dust prevention and prevent dust, mud and other impurities from entering the bearing area.

[0034] In this embodiment, the fan hub 2 has a compact overall structure with dustproof and sealed designs at both ends, effectively improving the system's protection level. Simultaneously, the modular bracket through-hole design allows for quick switching and fixing of the fan drive assembly on different vehicle platforms, effectively reducing customization costs and development cycles. The fan hub shaft 4 and fan pulley 5 employ a high-strength fit and multiple locking structures to ensure stability and reliability under high-speed and high-load conditions.

[0035] The overall structural design takes into account factors such as thermal expansion and contraction, lubrication and sealing, assembly tolerance, and axial force. Through the optimization of various engineering details, this invention has the comprehensive advantages of wide adaptability, high load-bearing capacity, long service life, and low failure rate, and is particularly suitable for scenarios with multiple engine-driven fans.

[0036] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A fan drive assembly with an adjustable mounting position, characterized in that, The system includes a fan bracket (1), a fan hub (2), and connecting bolts. The fan bracket (1) and the fan hub (2) are connected by multiple mounting holes and the connecting bolts. The multiple mounting holes are provided on the fan bracket (1) and are used to adjust the installation position of the fan bracket (1) relative to the fan hub (2). The fan hub (2) has a fan hub shaft (4) inside, and a fan pulley (5) is fitted onto the fan hub shaft (4). The fan pulley (5) and the fan hub shaft (4) are connected by at least two... Rolling bearings (12) are assembled, and a bearing pad (8) is provided between the two rolling bearings (12). The outer ring of the rolling bearing (12) is interference-fitted with the inner hole of the fan pulley (5). One end of the fan hub shaft (4) is provided with a limiting structure, and the other end is axially locked to the inner ring of the rolling bearing (12) by a locking assembly. One end of the fan pulley (5) is provided with a sealing structure, and the other end is provided with a dustproof structure. The end face of the fan pulley (5) is fixed with a pressure plate (6) by bolts to enhance the sealing and protection effect.

2. The adjustable-position fan drive assembly according to claim 1, characterized in that, The multiple mounting holes are arranged in a ring or array on the fan bracket (1) to adapt to the installation requirements of different engine models or vehicle platforms.

3. The adjustable-position fan drive assembly according to claim 1, characterized in that, The rolling bearing (12) is an open single-row tapered roller bearing. During installation, grease is filled inside the bearing and sealed with an oil seal (11) and a stop block (9).

4. The adjustable mounting position fan drive assembly according to claim 1, characterized in that, The bearing pad (8) is placed between the inner rings of the two rolling bearings (12) for spaced positioning and to improve assembly stability.

5. The adjustable mounting position fan drive assembly according to claim 1, characterized in that, The pressure plate (6) is fixed to the end face of the fan pulley (5) by at least two hexagonal bolts (14) for forming end compression of the sealing structure.

6. The fan drive assembly with adjustable mounting position according to claim 1, characterized in that, The limiting structure of the fan hub shaft (4) is a stepped surface set at the shaft end, and the locking assembly includes a flat washer (10) and a locking nut (13).

7. The adjustable-position fan drive assembly according to claim 1, characterized in that, The sealing structure includes an oil seal (11) disposed in the inner hole on the right side of the fan pulley (5), and the dustproof structure includes a stop block (9) disposed in the inner hole on the left side of the fan pulley (5).

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