An automatically angle-adjustable push fan

Abstract

The utility model discloses a kind of angle of automatic adjustment push force fan, it is related to air cushion vehicle accessory technical field, the utility model includes fan shell, fan shell top is connected with mounting seat, and mounting seat outer surface is connected with vertical rod, vertical rod one end is connected with support ring, vertical rod both ends are connected with cross bar;Second support rope is arranged in cross bar, and second support rope is connected with second pressure rod between cross bar, first support rope is arranged in vertical rod.The utility model is set by mounting seat, vertical rod, cross bar and support ring, and protective net is formed by mounting seat, vertical rod, cross bar and support ring, mounting seat is the outer ring support base of protective net, and support ring is the inner ring support base of protective net, main body protection is carried out by vertical rod and cross bar, vertical rod and cross bar adopt water drop shape section and sharp part is towards fan blade, can guide airflow more smoothly pass through, help to reduce the generation of vortex, turbulence;Air resistance generated by protective net is reduced, so as to play certain energy-saving effect.

Description

Technical Field

[0001] This utility model relates to the technical field of hovercraft accessories, specifically a thrust fan that automatically adjusts its angle. Background Technology

[0002] The thrust fan (propulsion fan) of a hovercraft is one of its core propulsion components. It mainly drives the airflow through the rotation of the fan blades, thereby generating thrust to provide power for the hovercraft's movement. It is a key device to ensure the normal operation of the hovercraft.

[0003] In the steering control of hovercraft, a hydraulic system is often used to drive a rudder mounted on the back of the fan casing to rotate. Changes in the angle of the rudder can alter the direction of airflow, thereby affecting the hovercraft's direction of travel and achieving steering adjustment.

[0004] The protective nets of existing thrust fans are mostly made of metal rods or steel wires with a circular cross-section. This structure easily causes eddies and turbulence in the airflow during the fan intake process, increasing air resistance and significantly affecting the intake airflow of the fan. Therefore, a higher-powered electric motor or engine is required to maintain normal operation. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a thrust fan that automatically adjusts its angle, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatically adjustable thrust fan, comprising a fan housing, a mounting base connected to the top of the fan housing, and a vertical rod connected to the outer surface of the mounting base, a support ring connected to one end of the vertical rod, and horizontal rods connected to both ends of the vertical rod; a second support rope is provided inside the horizontal rod, and a second pressure rod is connected between the second support rope and the horizontal rod; a first support rope is provided inside the vertical rod, and a first pressure rod is connected between the first support rope and the vertical rod.

[0007] By adopting the above technical solution, the main structure of the protective net can be formed by mounting base, vertical rod, horizontal rod and support ring. At the same time, the safety and reliability of the protective net are enhanced by the first support rope, the second support rope, the first pressure rod and the second pressure rod, forming an effective protection for the thrust fan and reducing the possibility of external debris entering the fan.

[0008] Furthermore, the cross-sections of both the vertical and horizontal bars are teardrop-shaped, and the tips of the vertical and horizontal bars are rounded and face the fan blades.

[0009] By adopting the above technical solutions, the teardrop-shaped cross-section helps guide airflow to pass through the protective net more smoothly, reducing eddies and turbulence generated when the airflow passes through, thereby reducing air resistance; the rounded corner design of the tip can reduce airflow impact, further optimize the airflow state, and help reduce the adverse effects on the intake airflow.

[0010] Furthermore, the vertical rod is inclined, and the horizontal rod is arc-shaped.

[0011] By adopting the above technical solution, the inclined design of the vertical bar and the arc-shaped structure of the horizontal bar are combined to form a protective net similar to a frustum, which effectively reduces the possibility of large impurities entering the fan housing.

[0012] Furthermore, multiple vertical and horizontal bars are provided, and the multiple vertical and horizontal bars are distributed in a circular array.

[0013] By adopting the above technical solution, the multiple vertical and horizontal bars distributed in the ring array can form a uniform protective area. While ensuring the protective effect, it allows the airflow to pass through the protective net more evenly, reduces local airflow turbulence, and improves the stability of air intake.

[0014] Furthermore, both the first support rope and the second support rope are steel wire ropes.

[0015] By adopting the above technical solution, the wire rope has high strength and toughness. When the vertical or horizontal bar breaks due to collision, it can effectively pull the broken parts, which helps to reduce the possibility of large fragments breaking off from the protective net and entering the fan.

[0016] Furthermore, rudder plates are connected to both sides of the back of the fan housing, and fan blades are provided inside the fan housing.

[0017] By adopting the above technical solution, the rotation of the fan blades can generate thrust to propel the hovercraft, while the rudder can change the airflow direction by adjusting the angle, thereby adjusting the hovercraft's direction of travel. The two work together to ensure the hovercraft's normal propulsion and turning.

[0018] Furthermore, the two ends of the vertical rod are welded and fixed to the mounting base and the support ring, respectively, and the two ends of the horizontal rod are welded and fixed to two of the vertical rods.

[0019] By adopting the above technical solutions, welding and fixing can enhance the connection strength between the various components of the protective net, improve the overall structural stability of the protective net, reduce loosening caused by vibration during use, and help extend the service life of the protective net.

[0020] Furthermore, the first pressure rod is welded and fixed to the vertical rod, and the second pressure rod is welded and fixed to the horizontal rod.

[0021] By adopting the above technical solution, the welded and fixed first and second pressure rods can more securely lock the first and second support ropes, which helps to reduce the situation where the support ropes come out of the vertical or horizontal rods and ensures that the support ropes can play a pulling role when needed.

[0022] Furthermore, a limiting bolt is connected between the mounting base and the fan housing, and the mounting base is detachably connected to the fan housing via the limiting bolt.

[0023] By adopting the above technical solution, the limiting bolt enables a detachable connection between the mounting base and the fan housing, facilitating the installation and removal of the protective net and providing convenience for subsequent inspection, maintenance, or replacement of the protective net, thus improving ease of use.

[0024] Furthermore, the limiting bolt is a high-strength bolt.

[0025] By adopting the above technical solutions, high-strength bolts have high load-bearing capacity and anti-loosening performance, which can ensure the stability of the connection between the mounting base and the fan housing, reduce the loosening of the connection caused by vibration, impact and other factors during use, and improve the reliability of the protective net installation.

[0026] In summary, the present invention has the following main advantages: 1. This utility model, through the arrangement of a mounting base, vertical rods, horizontal rods, and support rings, forms a protective net. The mounting base serves as the outer supporting foundation for the protective net, while the support ring serves as the inner supporting foundation. The main protection is provided by the vertical rods and horizontal rods. The vertical rods and horizontal rods have teardrop-shaped cross-sections with their tips facing the fan blades, which can guide airflow more smoothly and help reduce the generation of eddies and turbulence, thereby reducing air resistance. Reducing the air resistance generated by the protective net thus achieves a certain energy-saving effect. 2. This utility model, through the setting of a first support rope and a second support rope, with the first and second support ropes respectively inserted inside the vertical and horizontal bars as steel wire ropes, when the vertical or horizontal bars break due to collisions, the first and second support ropes can likely hold the broken parts, thereby helping to reduce the possibility of large fragments entering the fan blade area, thus reducing the risk of damage to the thrust fan due to fragment impact; and reducing the possibility of significant damage to the fan blades caused by damage to the protective net. 3. By setting up the first pressure rod and the second pressure rod, the present invention can effectively lock the first support rope and the second support rope, which helps to reduce the situation where the support rope comes out from the vertical or horizontal bar, and ensures the pulling effect of the first support rope and the second support rope when needed; further improving the reliability of the protective structure. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side sectional view of the present invention. Figure 3 This is a schematic diagram of the vertical bar structure of this utility model from a top view. Figure 4 This is a schematic diagram of the side section structure of the crossbar of this utility model; Figure 5 This is a top-section schematic diagram of the crossbar structure of this utility model.

[0028] In the diagram: 1. Fan housing; 2. Fan blade; 3. Rudder plate; 4. Mounting base; 5. High-strength bolt; 6. Vertical rod; 7. Horizontal rod; 8. Support ring; 9. First wire rope; 10. First pressure rod; 11. Second wire rope; 12. Second pressure rod. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The embodiments of this utility model will be described below based on its overall structure.

[0031] Example 1: A thrust fan that automatically adjusts its angle, such as Figures 1-5As shown, the fan includes a fan housing 1, a mounting base 4 connected to the top of the fan housing 1, and a vertical rod 6 connected to the outer surface of the mounting base 4. The vertical rod 6 is inclined, and a support ring 8 is connected to one end of the vertical rod 6. Horizontal rods 7 are connected to both ends of the vertical rod 6. The horizontal rods 7 are arc-shaped. The cross-sections of both the vertical rod 6 and the horizontal rods 7 are teardrop-shaped. The tips of the vertical rods 6 and the horizontal rods 7 are rounded and face the fan blades 2. There are multiple vertical rods 6 and horizontal rods 7, which are arranged in a ring array. The mounting base 4, vertical rods 6, horizontal rods 7, and support ring 8 form a protective net. The mounting base 4 is the outer ring support base of the protective net, while the support ring 8 is the inner ring support base. The teardrop-shaped cross-sections of the vertical rods 6 and the horizontal rods 7 guide the airflow to pass through the protective net more smoothly, reducing eddies and turbulence generated when the airflow passes through, thereby reducing air resistance and helping to reduce the power requirement of the drive device. The vertical bar 6 has a second support rope 11 inside, and a second pressure bar 12 connects the second support rope 11 to the horizontal bar 7. The vertical bar 6 has a first support rope 9 inside, and both the first support rope 9 and the second support rope 11 are steel wire ropes. The first support rope 9 is connected to the vertical bar 6 by a first pressure bar 10. The vertical bar 6 has a first support rope 9 inside, and the horizontal bar 7 has a second support rope 11 inside, both of which are steel wire ropes. When the vertical bar 6 or the horizontal bar 7 breaks due to collision with external debris, the first support rope 9 and the second support rope 11 can pull the broken parts, reducing the possibility of large fragments entering the fan blade 2 area. The first pressure bar 10 and the second pressure bar 12 lock the first support rope 9 and the second support rope 11 respectively, reducing the possibility of the support rope coming out of the vertical bar 6 or the horizontal bar 7, ensuring that the support rope can play a pulling role when needed, and further improving the reliability of the protective net.

[0032] See Figure 1 and Figure 2 In the above embodiment, rudder plates 3 are connected to both sides of the back of the fan housing 1. The rudder plates 3 on both sides of the back of the fan housing 1 can be driven to rotate by the hydraulic system of the hovercraft. The hydraulic system of the hovercraft is connected to the two rudder plates 3 through a linkage mechanism. The hydraulic system synchronously adjusts the angle of the two rudder plates 3 to change the airflow direction, thereby adjusting the direction of travel of the hovercraft. Fan blades 2 are provided inside the fan housing 1. The drive motor of the hovercraft drives the fan blades 2 to rotate through a coupling. The rotation of the fan blades 2 drives the airflow, thereby generating thrust and providing power for the movement of the hovercraft.

[0033] Example 2: Based on the above embodiment one, the following settings are now adopted to ensure the stability of the structural connection.

[0034] See Figures 1-5In the above embodiment, the two ends of the vertical rod 6 are welded and fixed to the mounting base 4 and the support ring 8, respectively. The two ends of the horizontal rod 7 are welded and fixed to two of the vertical rods 6, respectively. The first pressure rod 10 is welded and fixed to the vertical rod 6, and the second pressure rod 12 is welded and fixed to the horizontal rod 7. The entire protective net adopts a welding process, which has good structural stability and is not easy to loosen or fall off, ensuring that the protective net can be used for a long time.

[0035] Example 3: Based on the above embodiment one, the following settings are now implemented to facilitate disassembly and maintenance.

[0036] See Figure 1 and Figure 2 In the above embodiment, a limiting bolt 5 is connected between the mounting base 4 and the fan housing 1. The mounting base 4 is detachably connected to the fan housing 1 through the limiting bolt 5. The limiting bolt 5 is a high-strength bolt. The protective net is connected to the fan housing 1 through the mounting base 4. The mounting base 4 achieves a stable and detachable connection with the fan housing 1 by means of the high-strength limiting bolt 5, providing outer ring support for the protective net.

[0037] The implementation principle of this utility model is as follows: First, during production, workers attach the vertical rod 6 and the horizontal rod 7 together, insert the first support rope 9 into the vertical rod 6, and insert the second support rope 11 into the vertical rod 6 and the horizontal rod 7. Then, workers cut off the excess first support rope 9 and second support rope 11. Next, workers weld and fix multiple vertical rods 6 and horizontal rods 7 together, and weld and fix the vertical rod 6 to the mounting base 4 and the support ring 8. At this point, the protective net composed of the mounting base 4, vertical rods 6, horizontal rods 7, and support ring 8 is formed. Take a long pressure bar and insert it into the vertical bar 6 or the horizontal bar 7, so that it is firmly pressed against the first support rope 9 inside the vertical bar 6 or the second support rope 11 inside the horizontal bar 7. Then, the workers weld and fix the contact surface between the long pressure bar and the vertical bar 6 or the horizontal bar 7. Then, the excess long pressure bar exposed outside is cut off. The cut-off part can be used for subsequent processing of other first pressure bars 10 and second pressure bars 12. After that, the workers grind the cut surface and the weld seam to make it smooth, thus completing the production of the first pressure bar 10 or the second pressure bar 12. The fan blade 2 is connected to the drive motor via a coupling. When the protective net needs to be disassembled, the operator can disassemble the coupling to disconnect the fan blade 2 from the drive motor. The gap formed between the two facilitates the operator's disassembly and assembly of the protective net. After the protective net is installed, the operator reconnects the shaft of the fan blade 2 to the drive motor via the coupling. Based on this, the protective net is connected to the fan housing 1 via the mounting base 4. The mounting base 4 is securely and detachably connected to the fan housing 1 with the help of high-strength limiting bolts 5, providing outer ring support for the protective net. Combined with the negative pressure suction generated when the fan blades 2 rotate, the protective net is securely connected to the fan housing 1, effectively reducing the occurrence of detachment. When in use, the cross sections of the vertical rod 6 and the horizontal rod 7 are both teardrop-shaped, with rounded corners at the tips and facing the fan blade 2. This structural design can guide the airflow to pass through the protective net more smoothly, reduce the eddies and turbulence generated when the airflow passes through, thereby reducing air resistance and helping to reduce the power requirement of the drive device. The drive motor of the hovercraft drives the fan blades 2 to rotate through a coupling. The rotation of the fan blades 2 drives the airflow, thereby generating thrust and providing power for the hovercraft to move. The rudder plates 3 on both sides of the back of the fan housing 1 can be driven to rotate by the hovercraft's hydraulic system. The hovercraft's hydraulic system is connected to the two rudder plates 3 through a linkage mechanism. By synchronously adjusting the angle of the two rudder plates 3 through the hydraulic system, the airflow direction can be changed, thereby adjusting the hovercraft's direction of travel. The vertical pole 6 is equipped with a first support rope 9, and the horizontal pole 7 is equipped with a second support rope 11, both of which are steel wire ropes. When the vertical pole 6 or the horizontal pole 7 breaks due to collision with external debris, the first support rope 9 and the second support rope 11 can pull the broken parts, reducing the possibility of large fragments entering the fan blade 2 area. The first pressure rod 10 and the second pressure rod 12 lock the first support rope 9 and the second support rope 11 respectively, reducing the possibility of the support ropes coming out of the vertical pole 6 or the horizontal pole 7, ensuring that the support ropes can play a pulling role when needed, and further improving the reliability of the protective net.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A thrust fan with automatic angle adjustment, comprising a fan housing (1), characterized in that: The top of the fan housing (1) is connected to a mounting base (4), and a vertical rod (6) is connected to the outer surface of the mounting base (4). One end of the vertical rod (6) is connected to a support ring (8), and both ends of the vertical rod (6) are connected to horizontal rods (7). A second support rope (11) is provided inside the horizontal rod (7), and a second pressure rod (12) is connected between the second support rope (11) and the horizontal rod (7). A first support rope (9) is provided inside the vertical rod (6), and a first pressure rod (10) is connected between the first support rope (9) and the vertical rod (6).

2. The thrust fan with automatic angle adjustment according to claim 1, characterized in that: The cross sections of the vertical rod (6) and the horizontal rod (7) are both teardrop-shaped, and the tips of the vertical rod (6) and the horizontal rod (7) are rounded and face the fan blade (2).

3. The thrust fan with automatic angle adjustment according to claim 2, characterized in that: The vertical bar (6) is inclined, and the horizontal bar (7) is arc-shaped.

4. The thrust fan with automatic angle adjustment according to claim 3, characterized in that: Multiple vertical bars (6) and horizontal bars (7) are provided, and the multiple vertical bars (6) and horizontal bars (7) are distributed in a ring array.

5. The thrust fan with automatic angle adjustment according to claim 1, characterized in that: Both the first support rope (9) and the second support rope (11) are steel wire ropes.

6. The thrust fan with automatic angle adjustment according to claim 1, characterized in that: The fan housing (1) has rudder plates (3) connected to both sides of its back, and fan blades (2) are provided inside the fan housing (1).

7. The thrust fan with automatic angle adjustment according to claim 4, characterized in that: The two ends of the vertical rod (6) are welded and fixed to the mounting base (4) and the support ring (8) respectively, and the two ends of the horizontal rod (7) are welded and fixed to two of the vertical rods (6) respectively.

8. The thrust fan with automatic angle adjustment according to claim 7, characterized in that: The first pressure bar (10) is welded and fixed to the vertical bar (6), and the second pressure bar (12) is welded and fixed to the horizontal bar (7).

9. The thrust fan with automatic angle adjustment according to claim 7, characterized in that: The mounting base (4) is connected to the fan housing (1) by a limiting bolt (5), and the mounting base (4) is detachably connected to the fan housing (1) by the limiting bolt (5).

10. The thrust fan with automatic angle adjustment according to claim 9, characterized in that: The limiting bolt (5) is a high-strength bolt.

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