Cross-flow fan blade with composite spline curve blades

Abstract

The utility model provides a cross-flow fan with composite spline curve blades, which relates to the technical field of cross-flow fans and comprises a first connecting plate and a motor output shaft, and a connecting shaft is fixedly mounted on one side of the first connecting plate. By rotating the rotating block, matching with the threaded connection of the bidirectional lead screw and the sliding plate and the sliding design of the sliding plate and the sliding groove, maintenance personnel can conveniently control the clamping ring to move, more labor is saved in mounting and dismounting, meanwhile, through the accurate matching of the limiting insertion column and the limiting hole and the stable clamping of the motor output shaft by the clamping ring, the maintenance efficiency is improved, and the maintenance cost is reduced. Compared with the prior art, firm connection is guaranteed, stable operation of the cross-flow fan blade is ensured, the fault risk is reduced, in addition, the limiting insertion column can be easily pulled out, unlocked and taken down by reversely rotating the rotating block, efficient and convenient disassembly is achieved, the time and energy of maintenance personnel during equipment maintenance, cleaning or component replacement are greatly saved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cross-flow fan blade technology, and in particular to a composite spline curve blade cross-flow fan blade. Background Technology

[0002] In the field of ventilation and air circulation systems, cross-flow fan blades are widely used as a core component in various equipment such as air conditioning and fresh air systems.

[0003] Currently, traditional cross-flow fan blades face serious challenges in later maintenance. The connection between the cross-flow fan blades and the motor output shaft is usually quite rudimentary, mostly using a single bolt for fixing, lacking convenient disassembly and assembly design. This means that when it is necessary to clean, inspect, or replace damaged parts of the fan blades regularly, maintenance personnel need to spend a lot of time and effort to disassemble the fan blades, so improvements are needed. Utility Model Content

[0004] The purpose of this invention is to solve the problem of inconvenient disassembly and assembly of cross-flow fan blades in the existing technology, which leads to maintenance difficulties, and proposes a composite spline curve blade cross-flow fan blade.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a composite spline curve blade cross-flow fan blade, comprising a connecting plate one and a motor output shaft, wherein a connecting shaft is fixedly installed on one side of the connecting plate one, blades are uniformly fixedly installed on the side of the connecting plate one away from the connecting shaft, and a connecting plate two is fixedly installed at the end of the blades away from the connecting plate one. Limiting holes are symmetrically opened on the outer wall of the motor output shaft, and fixing plates are symmetrically fixedly installed on the outer wall of the connecting shaft. A sliding groove is opened on one side of the fixing plate and one end of the connecting shaft. A bidirectional lead screw is rotatably connected inside the sliding groove. A sliding plate is symmetrically threaded on the outer wall of the bidirectional lead screw. A clamping ring is fixedly installed on the inner side of the sliding plate, and a limiting post is fixedly installed on the inner wall of the clamping ring. A rotating block is fixedly installed at one end of the bidirectional lead screw.

[0006] Preferably, the outer wall of the rotating block is uniformly provided with semi-circular grooves, and the sliding plate is slidably connected to the grooves.

[0007] Preferably, the limiting post and the limiting hole are slidably connected.

[0008] Preferably, the outer wall of the motor output shaft is symmetrically fixedly equipped with connecting parts, and the outer wall of the connecting shaft is symmetrically fixedly equipped with limiting sleeves, and the limiting sleeves and connecting parts are slidably connected.

[0009] Preferably, a reinforcing ring is uniformly fixedly installed on the outer wall of the blade, a reinforcing rod is fixedly installed on the side of the connecting plate away from the connecting shaft, and a second reinforcing rod is symmetrically and uniformly fixedly installed on the outer wall of the first reinforcing rod.

[0010] Preferably, the second reinforcing rod is fixedly connected to the reinforcing ring, and the end of the first reinforcing rod away from the first connecting plate is fixedly connected to the second connecting plate.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, by using a limiting sleeve and connecting parts, the connecting shaft and the motor output shaft can be quickly aligned during installation, reducing the initial debugging time and improving installation efficiency. By rotating the rotating block and cooperating with the threaded connection between the bidirectional screw and the sliding plate, as well as the sliding design of the sliding plate and the slide groove, maintenance personnel can easily control the movement of the clamping ring, making installation and disassembly more labor-saving. At the same time, the precise cooperation between the limiting pin and the limiting hole, coupled with the stable clamping of the motor output shaft by the clamping ring, ensures a firm connection, ensures stable operation of the cross-flow fan blade, and reduces the risk of failure. In addition, by rotating the rotating block in the opposite direction, the limiting pin can be easily pulled out, the locking can be released, and the cross-flow fan blade can be removed, achieving efficient and convenient disassembly. This greatly saves maintenance personnel time and effort when maintaining, cleaning, or replacing parts, and reduces maintenance costs.

[0013] 2. In this utility model, the combined use of the reinforcing ring and the first and second reinforcing rods can effectively enhance the overall structural strength of the cross-flow fan blades, making them more stable and reliable during high-speed operation, reducing component damage caused by vibration and other factors, further ensuring the normal operation of the equipment, and reducing the maintenance frequency. Attached Figure Description

[0014] Figure 1 This utility model provides a schematic diagram of the overall structure of a composite spline curve blade crossflow fan blade;

[0015] Figure 2 This invention provides an exploded structural diagram of a composite spline curve blade cross-flow fan blade.

[0016] Figure 3 This invention proposes a composite spline curve blade for cross-flow fan blades. Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This invention provides a cross-sectional structural diagram of a composite spline curve blade cross-flow fan blade.

[0018] Legend: 1. Connecting plate one; 2. Connecting shaft; 3. Blade; 4. Connecting plate two; 5. Motor output shaft; 6. Limiting hole; 7. Fixing plate; 8. Slide groove; 9. Two-way lead screw; 10. Sliding plate; 11. Clamping ring; 12. Limiting pin; 13. Rotating block; 14. Semicircular groove; 15. Limiting sleeve; 16. Connecting piece; 17. Reinforcing ring; 18. Reinforcing rod one; 19. Reinforcing rod two. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1: As Figures 1-3 As shown, this utility model provides a technical solution: a composite spline curve blade cross-flow fan blade, including a connecting plate 1 and a motor output shaft 5. A connecting shaft 2 is fixedly installed on one side of the connecting plate 1. Blades 3 are uniformly fixedly installed on the side of the connecting plate 1 away from the connecting shaft 2. A connecting plate 4 is fixedly installed at the end of the blades 3 away from the connecting plate 1. Limiting holes 6 are symmetrically opened on the outer wall of the motor output shaft 5. Fixing plates 7 are symmetrically fixedly installed on the outer wall of the connecting shaft 2. A sliding groove 8 is opened on one side of the fixing plate 7 and one end of the connecting shaft 2. A bidirectional lead screw 9 is rotatably connected inside the sliding groove 8. The outer wall of the bidirectional lead screw 9 is symmetrically threaded with a sliding plate 10. A clamping ring 11 is fixedly installed on the inner side of the sliding plate 10. A limit pin 12 is fixedly installed on the inner wall of the clamping ring 11. A rotating block 13 is fixedly installed at one end of the bidirectional lead screw 9. A semi-circular groove 14 is evenly opened on the outer wall of the rotating block 13. The sliding plate 10 is slidably connected to the sliding groove 8. The limit pin 12 is slidably connected to the limit hole 6. A connector 16 is symmetrically fixedly installed on the outer wall of the motor output shaft 5. A limit sleeve 15 is symmetrically fixedly installed on the outer wall of the connecting shaft 2. The limit sleeve 15 is slidably connected to the connector 16.

[0022] In this embodiment, by using the limiting sleeve 15 and the connector 16, the connecting shaft 2 and the motor output shaft 5 can be quickly aligned during installation, reducing the initial debugging time and improving installation efficiency. By rotating the rotating block 13 and cooperating with the threaded connection between the bidirectional lead screw 9 and the sliding plate 10, as well as the sliding design between the sliding plate 10 and the slide groove 8, maintenance personnel can easily control the movement of the clamping ring 11, making installation and disassembly easier. At the same time, the precise cooperation between the limiting pin 12 and the limiting hole 6, coupled with the stable clamping of the motor output shaft 5 by the clamping ring 11, ensures a firm connection, ensures stable operation of the cross-flow fan blade, and reduces the risk of failure. In addition, by rotating the rotating block 13 in the opposite direction, the limiting pin 12 can be easily pulled out, the locking can be released, and the cross-flow fan blade can be removed, achieving efficient and convenient disassembly. This greatly saves maintenance personnel time and effort when maintaining, cleaning, or replacing parts, and reduces maintenance costs.

[0023] Example 2: As Figure 4 As shown, a reinforcing ring 17 is uniformly fixedly installed on the outer wall of the blade 3. A reinforcing rod 18 is fixedly installed on the side of the connecting plate 1 away from the connecting shaft 2. A reinforcing rod 29 is symmetrically and uniformly fixedly installed on the outer wall of the reinforcing rod 18. The reinforcing rod 29 is fixedly connected to the reinforcing ring 17. The end of the reinforcing rod 18 away from the connecting plate 1 is fixedly connected to the connecting plate 2.

[0024] In this embodiment, the combined use of the reinforcing ring 17, the first reinforcing rod 18, and the second reinforcing rod 19 can effectively enhance the overall structural strength of the cross-flow fan blades, making them more stable and reliable during high-speed operation, reducing component damage caused by vibration and other factors, further ensuring the normal operation of the equipment, and reducing the maintenance frequency.

[0025] The working principle of this embodiment is as follows: When the cross-flow fan needs to be installed on the motor output shaft 5, firstly, the connecting shaft 2 is brought close to the motor output shaft 5, so that the limiting sleeve 15 is aligned with the connecting piece 16 and inserted, initially positioning the relative position of the connecting shaft 2 and the motor output shaft 5. Then, the rotating block 13 is rotated, which drives the bidirectional lead screw 9 to rotate in the slide groove 8. When the bidirectional lead screw 9 rotates, because its outer wall is symmetrically threaded with sliding plates 10, and the sliding plates 10 are slidably connected to the slide groove 8, the two sliding plates 10 will move closer or further away from each other under the drive of the bidirectional lead screw 9. As the sliding plates 10 move, the clamping ring 11 fixed on the inner side of the sliding plate 10 also moves synchronously, and the limiting post 12 on the inner wall of the clamping ring 11 moves closer to the motor. When the limiting pin 12 is accurately aligned with the limiting hole 6 on the output shaft 5, continue to rotate the bidirectional screw 9 to insert the limiting pin 12 into the limiting hole 6. In this way, through the cooperation between the limiting pin 12 and the limiting hole 6, and the clamping ring 11 clamping the motor output shaft 5, the connecting shaft 2 is firmly fixed to the motor output shaft 5, completing the installation of the cross-flow fan. When it is necessary to disassemble the cross-flow fan for maintenance, cleaning, or replacement of parts, rotate the rotating block 13 in the opposite direction. The bidirectional screw 9 drives the sliding plate 10 to move outward with the clamping ring 11, and the limiting pin 12 is pulled out from the limiting hole 6, releasing the lock on the motor output shaft 5. At this time, the maintenance personnel can easily remove the cross-flow fan from the motor output shaft 5, greatly saving disassembly time and effort. When in use, the combined use of the reinforcing ring 17, the first reinforcing rod 18, and the second reinforcing rod 19 can effectively enhance the overall structural strength of the cross-flow fan blades, making them more stable and reliable during high-speed operation, reducing component damage caused by vibration and other factors, further ensuring the normal operation of the equipment, and reducing the maintenance frequency.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A composite spline curve blade crossflow fan blade, comprising a connecting plate (1) and a motor output shaft (5), characterized in that: A connecting shaft (2) is fixedly installed on one side of the connecting plate (1). Blades (3) are evenly fixedly installed on the side of the connecting plate (1) away from the connecting shaft (2). A connecting plate (4) is fixedly installed on the end of the blade (3) away from the connecting plate (1). Limiting holes (6) are symmetrically opened on the outer wall of the motor output shaft (5). A fixing plate (7) is symmetrically fixedly installed on the outer wall of the connecting shaft (2). A sliding groove (8) is opened on one side of the fixing plate (7) and one end of the connecting shaft (2). A double-acting screw (9) is rotatably connected inside the sliding groove (8). A sliding plate (10) is symmetrically threaded on the outer wall of the double-acting screw (9). A clamping ring (11) is fixedly installed on the inner side of the sliding plate (10). A limiting insert (12) is fixedly installed on the inner wall of the clamping ring (11). A rotating block (13) is fixedly installed on one end of the double-acting screw (9).

2. The composite spline curve blade crossflow fan blade according to claim 1, characterized in that: The outer wall of the rotating block (13) is uniformly provided with semi-circular grooves (14), and the sliding plate (10) is slidably connected to the groove (8).

3. The composite spline curve blade cross-flow fan blade according to claim 1, characterized in that: The limiting pin (12) is slidably connected to the limiting hole (6).

4. The composite spline curve blade cross-flow fan blade according to claim 1, characterized in that: A connector (16) is symmetrically fixedly installed on the outer wall of the motor output shaft (5), and a limit sleeve (15) is symmetrically fixedly installed on the outer wall of the connecting shaft (2). The limit sleeve (15) and the connector (16) are slidably connected.

5. The composite spline curve blade cross-flow fan blade according to claim 1, characterized in that: The outer wall of the blade (3) is uniformly fixed with a reinforcing ring (17), the side of the connecting plate (1) away from the connecting shaft (2) is fixedly fixed with a reinforcing rod (18), and the outer wall of the reinforcing rod (18) is symmetrically and uniformly fixed with a reinforcing rod (19).

6. The composite spline curve blade crossflow fan blade according to claim 5, characterized in that: The second reinforcing rod (19) is fixedly connected to the reinforcing ring (17), and the end of the first reinforcing rod (18) away from the first connecting plate (1) is fixedly connected to the second connecting plate (4).

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