Industrial large ceiling fan with protection function
By employing a support and protection structure composed of hollow retaining rings, connecting rods, limiting outer rings, and clamping frames in industrial ceiling fans, the problem of loosening and separation of the rotating shaft assembly and fan blades has been solved, achieving stable operation and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-29
- Publication Date
- 2026-04-14
AI Technical Summary
The rotating shaft assembly and blades of existing industrial ceiling fans are prone to loosening, separation, and being thrown out under prolonged vibration, posing a safety hazard.
The supporting and protective structure consists of hollow retaining rings, connecting rods, limiting outer rings, clamping frames, short columns, convex balls, and springs. By combining and installing these components, the connection between the rotating chassis and the fan blade body is reinforced, ensuring a stable connection.
It effectively prevents the rotating shaft assembly and fan blades from becoming loose or flying off during use, eliminating safety hazards and ensuring stable equipment operation.
Smart Images

Figure CN224120422U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial ceiling fan technology, specifically to a large industrial ceiling fan with protective functions. Background Technology
[0002] In industrial production, industrial large fans are large ventilation devices mainly used in industrial and commercial environments such as warehouses, factories, and large shopping malls. They typically have a large diameter, which can cover a large area and provide effective airflow and circulation. Compared with traditional small fans, industrial large fans can generate greater wind power and coverage, which helps to improve air quality, reduce temperature, and reduce humidity, thereby improving the comfort and efficiency of the working environment.
[0003] In the existing technology, most industrial ceiling fans are fixed to the ceiling support of the factory building for hoisting use. However, considering that the fan motor will generate vibration when it rotates, and the vibration will be transmitted to the fan's rotating shaft assembly, the fan blades that are detachably installed on the rotating shaft assembly may loosen due to the fixed installation during long-term operation in a vibrating environment. This could lead to the risk of the blades being thrown off and falling during rotation. The rotating shaft assembly also poses a safety hazard as it is easy to loosen and separate from the motor output end. Therefore, to address the above problems, an industrial ceiling fan with protective functions is proposed. Utility Model Content
[0004] The purpose of this utility model is to provide an industrial ceiling fan with protective function to solve the problem mentioned in the background art that when using industrial ceiling fans, the rotating shaft assembly and fan blades may become loose, separate, or fall off.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An industrial ceiling fan with protective features includes a drive unit compartment. A rotating chassis is located directly below the drive unit compartment. An upper pressure plate is fixedly connected to the upper outer side of the rotating chassis. A fan blade body is detachably connected to the bottom of the upper pressure plate by bolts. A hollow retaining ring is fixedly connected to the lower outer side of the rotating chassis. A connecting rod is fixedly connected to the outside of the hollow retaining ring. A limiting outer ring is fixedly connected to the outside of the connecting rod. A clamping frame is clamped to the outside of the limiting outer ring. A short column is fixedly connected to the top of the clamping frame. A convex ball is movably installed at the top and bottom of the limiting outer ring. A spring disposed inside the limiting outer ring is fixedly connected between the upper and lower convex balls. A limiting insert plate is inserted into the side of the fan blade body near the rotating chassis. A convex ring is fixedly connected to the bottom end of the drive unit compartment.
[0007] Preferably, the rotating chassis and the limiting outer ring are coaxially arranged, and there are a total of 12 connecting rods. The limiting outer ring is located directly below the fan blade body.
[0008] Preferably, the top and front ends of the drive housing are respectively fixedly connected to ear plates, and a vertical rod is detachably connected between the front and rear ear plates by bolts. The drive housing has a hexagonal prism structure, and the outer surface of the drive housing is provided with a multi-row heat dissipation hole structure. The output end of the drive motor and the rotating chassis inside the drive housing are fixedly connected together.
[0009] Preferably, the top of the upright is detachably bolted to a lower clamping seat, and an upper clamping seat is provided directly above the lower clamping seat. Fastening bolts are installed on both sides of the top of the upper clamping seat, and the lower part of the fastening bolts extends downward through both sides of the lower clamping seat's horizontal plate.
[0010] Preferably, the top surface of the rotating chassis has slots at the top, bottom, left, and right positions. A slider is slidably connected to one side of the slot, and a trapezoidal lead screw is threaded to the inner side of the slider. A turntable disposed inside the slot is fixedly installed on one side of the trapezoidal lead screw. A connecting block is fixedly connected to the top of the slider, and a buckle plate is fixedly connected to the top of the connecting block. A rubber pad is provided at the bottom of the buckle plate and the top of the convex ring to abut against each other. The trapezoidal lead screw and the rotating chassis are rotatably connected.
[0011] Preferably, the clamping frame has a fan-shaped structure, and arc grooves are connected above and below the U-shaped groove in the middle of the clamping frame. The inner end of the arc groove and the outer end of the convex ball are shaped to match each other. The arc groove and the clamping frame are integrally formed, and the short column and the fan blade body are fixedly connected.
[0012] Preferably, the limiting insert plate and the rotating chassis are fixedly connected, and the number of the limiting insert plates corresponds one-to-one with the number of fan blade bodies.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] In this invention, the hollow retaining ring, connecting rod, limiting outer ring, clamping frame, short column, convex ball, arc groove, and spring facilitate the assembly and installation of the industrial ceiling fan with protective function before use. A hanging protective structure composed of a convex ring, buckle plate, connecting block, slot, slider, trapezoidal screw, and turntable is added to the upper part of the rotating chassis. A supporting protective structure composed of a hollow retaining ring, connecting rod, limiting outer ring, clamping frame, short column, convex ball, arc groove, and spring is added to the bottom of the fan blade body. These components reinforce and protect the connecting ends of the rotating chassis and the fan blade body, making their installation more stable and reliable. This prevents them from easily falling off or separating during actual use, eliminating potential safety hazards and ensuring safe operation of the equipment. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the fan blade body installation structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the clamping frame structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the convex ball mounting structure of this utility model;
[0019] Figure 5 This is a partial enlarged structural diagram of the present invention.
[0020] In the diagram: 1. Drive housing; 2. Rotating chassis; 3. Upper pressure plate; 4. Fan blade body; 5. Hollow retaining ring; 6. Connecting rod; 7. Limiting outer ring; 8. Clamping frame; 9. Short column; 10. Convex ball; 11. Arc groove; 12. Spring; 13. Ear plate; 14. Upright pole; 15. Lower clamping seat; 16. Upper clamping seat; 17. Fastening bolt; 18. Convex ring; 19. Buckling plate; 20. Connecting block; 21. Slotted; 22. Slider; 23. Trapezoidal lead screw; 24. Turntable; 25. Limiting insert plate. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-5 This utility model provides a technical solution:
[0023] An industrial ceiling fan with protective function includes a drive housing 1, a rotating base 2 located directly below the drive housing 1, an upper pressure plate 3 fixedly connected to the upper outer side of the rotating base 2, a fan blade body 4 detachably connected to the bottom of the upper pressure plate 3 by bolts, a hollow retaining ring 5 fixedly connected to the lower outer side of the rotating base 2, a connecting rod 6 fixedly connected to the outside of the hollow retaining ring 5, a limiting outer ring 7 fixedly connected to the outside of the connecting rod 6, a clamping frame 8 clamped to the outside of the limiting outer ring 7, a short column 9 fixedly connected to the top of the clamping frame 8, convex balls 10 movably installed at the top and bottom of the limiting outer ring 7 respectively, a spring 12 fixedly connected between the upper and lower convex balls 10 and disposed inside the limiting outer ring 7, a limiting insert plate 25 inserted into the side of the fan blade body 4 near the rotating base 2, and a convex ring 18 fixedly connected to the bottom end of the drive housing 1.
[0024] like Figure 1 As shown, the rotating chassis 2 and the limiting outer ring 7 are coaxially arranged. There are 12 connecting rods 6 in total. The limiting outer ring 7 is located directly below the fan blade body 4. The connecting rods 6 serve to connect the limiting outer ring 7 and the hollow retaining ring 5. The top and front and rear ends of the drive housing 1 are respectively fixedly connected to the ear plates 13. The two ear plates 13 are detachably connected to the upright rod 14 by bolts. The drive housing 1 has a hexagonal prism structure. The outer surface of the drive housing 1 has a multi-row heat dissipation hole structure. The output end of the drive motor inside the drive housing 1 is fixedly connected to the rotating chassis 2. When the equipment is started... During operation, the multi-row heat dissipation hole structure on the outer surface of the drive housing 1 mainly serves to assist the internal drive motor of the drive housing 1 in ventilation and heat dissipation; the top bolt of the upright 14 is detachably connected to the lower clamp 15, and the upper clamp 16 is located directly above the lower clamp 15. Fastening bolts 17 are installed on both sides of the top of the upper clamp 16. The lower part of the fastening bolts 17 extends downward through both sides of the horizontal plate of the lower clamp 15. The lower clamp 15 is connected to the upper clamp 16 by two fastening bolts 17, which mainly serves to assist the equipment in being hoisted onto the ceiling support.
[0025] like Figure 1 and Figure 5 As shown, the top surface of the rotating chassis 2 has slots 21 at the top, bottom, left, and right positions. A slider 22 is slidably connected to one side of the slot 21. A trapezoidal screw 23 is threadedly connected to the inner side of the slider 22. A turntable 24 is fixedly installed on the outer side of one side of the trapezoidal screw 23, which is located inside the slot 21. A connecting block 20 is fixedly connected to the top of the slider 22. A buckle plate 19 is fixedly connected to the top of the connecting block 20. A rubber pad is provided at the bottom of the buckle plate 19 and at the top of the convex ring 18. The trapezoidal screw 23 and the rotating chassis 2 are rotatably connected. After multiple buckles 19 move towards the middle in sequence and come into contact with the rubber pad at the top of the convex ring 18, this structural design does not affect the normal rotation of the rotating chassis 2 with the buckles 19. At the same time, the engagement between the convex ring 18 and the buckles 19 can also play a role in fixing the connection from the upper position of the rotating chassis 2, making the connection between the rotating chassis 2 and the drive housing 1 more stable.
[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the clamping frame 8 has a fan-shaped structure. The U-shaped groove in the middle of the clamping frame 8 is connected to the upper and lower positions of the arc groove 11. The inner end of the arc groove 11 and the outer end of the convex ball 10 are shaped to match. The arc groove 11 and the clamping frame 8 are integrally formed. The short column 9 and the fan blade body 4 are fixedly connected. As the fan blade body 4 is precisely installed, the clamping frame 8 will fit and clamp the limiting outer ring 7, so that the fan blade body 4 can be connected to the bottom support and protection structure. The limiting insert plate 25 and the rotating base 2 are fixedly connected. The number of limiting insert plates 25 corresponds one-to-one with the number of fan blade bodies 4. When installing the fan blade body 4, the insertion and cooperation of the limiting insert plate 25 and the fan blade body 4 can make the installation of the fan blade body 4 more precise.
[0027] Workflow: The electrical energy required for the equipment to start and run in this utility model comes from an external power source. Before using this industrial ceiling fan, the operator can first stand on the lifting platform and lift the lower part of the equipment upwards, placing the lower clamp 15 against the bottom of the ceiling support and the upper clamp 16 against the top of the ceiling support. By assembling the two upper clamps 16 and the fastening nuts, the lower clamp 15 and the upper clamp 16 are fixedly connected together, thus completing the hoisting of the equipment. Next, the output end of the drive motor inside the drive housing 1 is fixedly connected to the rotating chassis 2. The convex ring 18 will fit snugly against the top of the rotating chassis 2. At this time, under the connection constraint of the slot 21, the trapezoidal lead screw 23 is rotated and adjusted by the turntable 24, causing the slider 22, carrying the connecting block 20 and the buckle plate 19, to move towards the center of the rotating chassis 2. When it moves into place, the buckle plate 19 will abut against the rubber pad layer on the top of the convex ring 18 and hang on the convex ring 18. At this time, the engagement of the buckle plate 19 and the convex ring 18 does not affect the subsequent rotation of the rotating chassis 2 by the drive motor, and can also maintain the rotation of the rotating chassis 2 and the drive housing. The connection of 1 is reinforced and limited, making the rotating chassis 2 more securely installed below the drive housing 1. Then, since the fan blade body 4 has a groove inside that mates with the limiting insert plate 25, after aligning with the limiting insert plate 25, the fan blade body 4 is fitted onto the outside of the limiting insert plate 25, and the upper pressure plate 3 and the fan blade body 4 are fixedly connected together by bolts. The clamping frame 8 of the connecting short column 9 will clamp the limiting outer ring 7, and the two upper and lower protruding balls 10 that were originally squeezed back into the limiting outer ring 7 will fit into the upper and lower arc grooves 11. At this time, the air... The support ring structure, consisting of the core retaining ring 5, connecting rod 6, limiting outer ring 7, clamping frame 8, and convex ball 10, provides support and limitation from the bottom of the fan blade body 4, making the fixed connection between the fan blade body 4 and the rotating chassis 2 more stable. This prevents the fan blade body 4 from falling off the rotating chassis 2 during rotation. After assembly, the entire device is started, and the drive motor inside the drive housing 1 rotates the multiple fan blade bodies 4 through the rotating chassis 2, thereby generating a large air volume to ventilate and cool the interior environment of the factory.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An industrial ceiling fan with protective function, comprising a drive unit compartment (1), characterized in that: A rotating chassis (2) is located directly below the drive housing (1). An upper pressure plate (3) is fixedly connected to the upper outer side of the rotating chassis (2). A fan blade body (4) is detachably connected to the bottom bolt of the upper pressure plate (3). A hollow retaining ring (5) is fixedly connected to the lower outer side of the rotating chassis (2). A connecting rod (6) is fixedly connected to the outside of the hollow retaining ring (5). A limiting outer ring (7) is fixedly connected to the outside of the connecting rod (6). The outer clamp of the fan blade body (4) is fitted with a clamping frame (8), and a short column (9) is fixedly connected to the top of the clamping frame (8). The top and bottom of the limiting outer ring (7) are respectively movably installed with convex balls (10). A spring (12) is fixedly connected between the upper and lower convex balls (10) and is disposed inside the limiting outer ring (7). A limiting insert plate (25) is inserted into the side of the fan blade body (4) near the rotating chassis (2). A convex ring (18) is fixedly connected to the bottom of the drive housing (1).
2. The industrial ceiling fan with protective function according to claim 1, characterized in that: The rotating chassis (2) and the limiting outer ring (7) are coaxially arranged. There are a total of 12 connecting rods (6). The limiting outer ring (7) is located directly below the fan blade body (4).
3. An industrial ceiling fan with protective function according to claim 1, characterized in that: The top and front and rear ends of the drive housing (1) are respectively fixedly connected to ear plates (13), and the two ear plates (13) are detachably connected to a vertical rod (14) by bolts. The drive housing (1) is a hexagonal prism structure. The outer surface of the drive housing (1) is provided with a multi-row heat dissipation hole structure. The output end of the drive motor and the rotating chassis (2) inside the drive housing (1) are fixedly connected together.
4. An industrial ceiling fan with protective function according to claim 3, characterized in that: The top bolt of the upright (14) is detachably connected to a lower clamp (15). An upper clamp (16) is provided directly above the lower clamp (15). Fastening bolts (17) are installed on both sides of the top of the upper clamp (16). The lower part of the fastening bolts (17) extends downward through both sides of the horizontal plate of the lower clamp (15).
5. An industrial ceiling fan with protective function according to claim 1, characterized in that: The top surface of the rotating chassis (2) has slots (21) at the top, bottom, left and right positions respectively. A slider (22) is slidably connected to one side of the slot (21). A trapezoidal screw (23) is threadedly connected to the inner side of the slider (22). A turntable (24) is fixedly installed on the outer side of one side of the trapezoidal screw (23) and located inside the slot (21). A connecting block (20) is fixedly connected to the top of the slider (22). A buckle plate (19) is fixedly connected to the top of the connecting block (20). A rubber pad is provided at the bottom of the buckle plate (19) and the top of the convex ring (18) to abut against each other. The trapezoidal screw (23) and the rotating chassis (2) are rotatably connected.
6. An industrial ceiling fan with protective function according to claim 1, characterized in that: The clamping frame (8) has a fan-shaped structure. The U-shaped groove in the middle of the clamping frame (8) is connected to an arc groove (11) above and below. The inner end of the arc groove (11) and the outer end of the convex ball (10) are matched in shape. The arc groove (11) and the clamping frame (8) are integrally formed. The short column (9) and the fan blade body (4) are fixedly connected.
7. An industrial ceiling fan with protective function according to claim 1, characterized in that: The limiting insert (25) and the rotating chassis (2) are fixedly connected, and the number of the limiting insert (25) corresponds one-to-one with the number of the fan blade body (4).