Flexible air duct assembly structure

Abstract

The utility model relates to vehicle air duct technical field provides a kind of flexible air duct assembly structure, including by hoop sequentially connecting front rigid air duct, front soft air duct, rear rigid air duct and rear soft air duct;The front rigid air duct first end is provided with U bolt, and the U bolt top is connected with fixed seat, and the front rigid air duct end is provided with hoop, and the hoop is connected with hoop fixed support, and the rear rigid air duct bottom is fixedly installed rear fixed support, and the characteristics of two soft air ducts can be moved to solve the misplacement problem of front rigid air duct and rear rigid air duct.

Description

Technical Field

[0001] This utility model relates to the field of vehicle air duct technology, specifically to a flexible air duct assembly structure. Background Technology

[0002] In the cooling system of engineering vehicles (such as mining trucks and large excavators), the air duct assembly is a key component connecting the radiator and the engine compartment, used to guide the cooling airflow. These vehicles usually operate under complex and harsh working conditions, and the body structure will generate significant vibration, torsion and relative displacement during driving, steering and load changes. Currently, most common air duct assembly structures use rigid connections or simple flexible connections. During vehicle operation, the front frame (usually near the radiator) and the rear frame (usually near the engine compartment) where the air duct is installed will inevitably experience relative displacement and angular changes, resulting in misalignment.

[0003] In existing technologies, if the overall rigidity of the air duct is too strong or the design of the flexible connection is improper, it is difficult to effectively absorb and compensate for this dynamic misalignment. This causes the air duct connection points (especially the connection points between the rigid air duct and the support, as well as the interfaces between rigid air ducts) to bear excessive stress. Under long-term action, this can easily lead to air duct misalignment and cracking, affecting heat dissipation efficiency or even causing equipment overheating failure. Utility Model Content

[0004] The purpose of this utility model is to provide a flexible air duct assembly structure, which includes a front rigid air duct, a front soft air duct, a rear rigid air duct and a rear soft air duct connected in sequence by clamps. The front rigid air duct is provided with a U-bolt at the first end, and a fixing seat is connected to the top of the U-bolt. The front rigid air duct is provided with a clamp at the end, and the clamp is connected to a clamp fixing bracket. The rear rigid air duct is fixed with a rear fixing bracket at the bottom.

[0005] A further provision is made that the front rigid air duct is equipped with a sealing ring.

[0006] A further configuration includes a pair of tripods mounted on the top of the fixed base, with a connecting plate installed on the top of the tripods.

[0007] A further configuration is that a number of bolts are evenly distributed on the top of the connecting plate.

[0008] A further configuration involves fixing a limiting plate between the U-bolts.

[0009] A further configuration is provided, wherein the clamp fixing bracket is provided with a pair of mounting plates, and the mounting plates are provided with a number of bolts.

[0010] A further configuration is that the front flexible air duct is sleeved on the front rigid air duct, and a clamp is provided on the outside of the front flexible air duct.

[0011] A further configuration is that the rear flexible air duct is sleeved on the rear rigid air duct, and a clamp is provided on the outer side of the rear flexible air duct.

[0012] Further configuration involves fixing and installing a hoisting bracket II on the upper side of the rear rigid air duct.

[0013] Further configuration involves fixing and installing a hoisting bracket I on the front rigid air duct sidewall.

[0014] To achieve the above objectives, this utility model proposes a flexible air duct assembly structure.

[0015] The beneficial effects of one or more of the above technical solutions: This utility model uses a clamp fixing bracket to fix one side of the flexible air duct, which is then fixed to the front frame. The clamp fixing bracket provides an upward force to fix the front rigid air duct. These two forces ensure the stability of the front rigid air duct. The rear rigid air duct is fixed to the rear frame by welding its own rear fixing bracket. It also has a built-in lifting bracket for easy hoisting. The two flexible air ducts utilize their own movable characteristics to solve the misalignment problem between the front and rear rigid air ducts. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] In the diagram, 1 is the clamp; 2 is the front rigid air duct; 3 is the front flexible air duct; 4 is the rear rigid air duct; 5 is the rear flexible air duct; 6 is the U-bolt; 7 is the fixing seat; 8 is the clamp fixing bracket; 9 is the sealing ring; 10 is the tripod; 11 is the connecting plate; 12 is the limit fixing plate; 13 is the hoisting bracket II; and 14 is the hoisting bracket I. Detailed Implementation

[0019] The specific implementation of this embodiment will now be described with reference to the accompanying drawings.

[0020] Reference Figure 1 A flexible air duct assembly structure includes a front rigid air duct 2, a front flexible air duct 3, a rear rigid air duct 4 and a rear flexible air duct 5 connected in sequence by a clamp 1. A U-bolt 6 is installed at the beginning of the front rigid air duct 2, and a fixing seat 7 is connected to the top of the U-bolt 6. A clamp 1 is installed at the end of the front rigid air duct 2, and the clamp 1 is connected to the clamp fixing bracket 8. The bottom of the rear rigid air duct 4 is fixed with a rear fixing bracket. At each connection between the rigid air duct and the flexible air duct, the flexible air duct that wraps the rigid air duct is fixed by two hose clamps to ensure the airtightness of the entire air duct system. At the same time, the connection between the rear flexible air duct 5 and the rear axle housing assembly at a specific position is also fixed by hose clamps.

[0021] The rear rigid air duct 4 is fixed to the rear frame by its own welded mounting bracket and also comes with a convenient lifting bracket. The two flexible air ducts utilize their movable characteristics to solve the misalignment problem between the front rigid air duct 2 and the rear rigid air duct 4. A sealing ring is added at the interface between the U-bolt and the air duct to eliminate assembly gaps caused by vibration and prevent airflow leakage; at the same time, it provides elastic cushioning, reduces the risk of metal fatigue caused by high-frequency vibration at the bolt connection point, and extends the interface life.

[0022] The front rigid air duct 2 is equipped with a sealing ring 9. The front rigid air duct 2 is fixedly connected to the blower through its own flange. The sealing ring 9 is installed in the middle to ensure air tightness. A pair of triangular brackets 10 are set on the top of the mounting base 7. A connecting plate 11 is installed on the top of the triangular brackets 10. The triangular brackets 10 raise the connecting plate 11 and improve the strength through the structure of the triangular brackets 10. The triangular bracket structure distributes the longitudinal vibration load borne by the U-bolt to a larger mounting surface to avoid excessive stress at a single point. The connecting plate serves as a transition base plate to accommodate the unevenness of the vehicle frame mounting surface. The horizontal posture of the mounting base is ensured by adjusting the bolt preload, reducing the initial assembly stress of the air duct.

[0023] Several bolts are evenly distributed on the top of the connecting plate 11, which can be used to fix the mounting plate to the vehicle body. The evenly distributed bolt design enhances the connection rigidity between the connecting plate and the vehicle frame, suppresses bolt loosening caused by vibration during operation, reduces the shear force of individual bolts by evenly distributing loads, avoids bolt hole deformation, and improves long-term reliability. The U-bolts 6 are used to fix the limiting and fixing plate 12, which is fixed to the cover by the fixing seat 7. It provides an upward pulling force to the front rigid air duct 2 to fix the front rigid air duct 2. The double mounting plate structure provides wide-spacing support and improves the torsional stiffness of the bracket. The multi-bolt design allows the bracket to self-adapt to slight deformation of the frame, avoiding the deformation of the bracket itself from being transmitted to the air duct.

[0024] The clamp fixing bracket 8 is equipped with a pair of mounting plates, and several bolts are provided on the mounting plates. The mounting plates can be fixed to the front frame by the bolts. The sleeve structure allows the front soft air duct to slide axially and deflect radially on the front rigid air duct, actively compensating for the longitudinal displacement and angular misalignment of the front and rear frames. The outer clamp provides controllable clamping force, which ensures both sealing and avoids excessive compression of the soft air duct, thus preventing it from losing its deformation ability.

[0025] The front flexible air duct 3 is fitted onto the front rigid air duct 2, and a clamp 1 is installed on the outside of the front flexible air duct 3. The rear flexible air duct 5 is fitted onto the rear rigid air duct 4, and a clamp 1 is installed on the outside of the rear flexible air duct 5. The flexible air duct and the rigid air duct are connected by the clamp 1. At the same time, the clamp 1 ensures the airtightness of the flexible air duct and the rigid air duct after tightening. Through the setting of the rear flexible air duct fitting and clamp locking, the rear flexible air duct independently absorbs the relative movement between the rear rigid air duct and the engine compartment, forming a "dual-stage absorption" mechanism with the front flexible air duct. The fitting clamp structure simplifies the maintenance process. The entire air duct does not need to be damaged during disassembly, reducing replacement costs.

[0026] The upper side of the rear rigid air duct 4 is fixedly equipped with a lifting bracket II13, and the side wall of the front rigid air duct 2 is fixedly equipped with a lifting bracket I14. By setting up lifting brackets I14 and II13 for lifting, the dedicated lifting points enable the rear rigid air duct to be accurately positioned during installation, avoiding misalignment of the connection joint caused by manual handling. The lifting brackets work together with the rear fixed brackets to ensure the stability of the air duct's center of gravity and reduce swaying caused by inertia during operation. The rear rigid air duct 4 or the front rigid air duct 2 is lifted by connecting lifting brackets I14 and II13 with a crane. The independent lifting points enable the separate lifting of the front rigid air duct, avoiding interference with the tripod / U-bolt. During installation, the air duct's level can be finely adjusted using lifting tools to ensure initial alignment with the front frame, reducing assembly stress from the source.

[0027] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A flexible air duct assembly structure, characterized in that, This includes connecting the front rigid air duct, the front flexible air duct, the rear rigid air duct, and the rear flexible air duct in sequence via clamps; The front rigid air duct is provided with a U-bolt at the first end, and a fixing seat is connected to the top of the U-bolt. The front rigid air duct is provided with a clamp at the end, and the clamp is connected to a clamp fixing bracket. The rear rigid air duct is fixedly installed with a rear fixing bracket at the bottom.

2. The flexible air duct assembly structure according to claim 1, characterized in that, The front rigid air duct is equipped with a sealing ring.

3. The flexible air duct assembly structure according to claim 1, characterized in that, A pair of tripods are installed on the top of the fixed base, and a connecting plate is installed on the top of the tripods.

4. The flexible air duct assembly structure according to claim 1, characterized in that, Several bolts are evenly arranged on the top of the connecting plate.

5. The flexible air duct assembly structure according to claim 1, characterized in that, The U-bolts are fixedly installed with a limiting and fixing plate.

6. The flexible air duct assembly structure according to claim 1, characterized in that, The clamp fixing bracket is equipped with a pair of mounting plates, and several bolts are installed on the mounting plates.

7. The flexible air duct assembly structure according to claim 1, characterized in that, The front flexible air duct is sleeved on the front rigid air duct, and a clamp is provided on the outside of the front flexible air duct.

8. The flexible air duct assembly structure according to claim 1, characterized in that, The rear flexible air duct is sleeved on the rear rigid air duct, and a clamp is provided on the outer side of the rear flexible air duct.

9. The flexible air duct assembly structure according to claim 1, characterized in that, The upper side of the rear rigid air duct is fixedly installed with a hoisting bracket II.

10. The flexible air duct assembly structure according to claim 1, characterized in that, Front rigid air duct sidewall fixed installation hoisting bracket I.

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