Cavity type fan foundation

Abstract

The utility model relates to the technical field of fans, in particular to a cavity type fan foundation which is wide in air supply range and diversified in function. Comprising a fan body and a base, and the base comprises a mounting base which is independently and fixedly arranged; the supporting shaft is rotationally mounted in the shaft hole of the mounting base, an assembling disc is arranged on the supporting shaft, the assembling disc is rotationally mounted in the groove cavity of the mounting base, and the fan body is mounted on the assembling disc; the two connecting shafts are rotationally mounted in the inner cavity of the mounting base, the two connecting shafts are arranged in an axial symmetry mode relative to the supporting shaft, and sector gears are arranged on the connecting shafts; the transmission gear is coaxially arranged on the supporting shaft, and the two sector gears are respectively meshed with the transmission gear; and the driving mechanism is mounted in the inner cavity of the mounting base, and the driving mechanism provides rotating force with opposite rotating directions for the two connecting shafts, so that the fan body swings back and forth.

Description

Technical Field

[0001] This utility model relates to the technical field of fans, and in particular to a cavity fan foundation. Background Technology

[0002] In industrial plants, agricultural greenhouses, and public buildings, ventilation systems are crucial for ensuring air quality and regulating temperature and humidity. While traditional fixed-installation fans provide basic airflow, they have several limitations in practical applications. For example, in large spaces, fixed fans often struggle to achieve uniform air distribution, leading to poor ventilation in localized areas and impacting working comfort or crop growth conditions. Furthermore, for applications requiring directional airflow, such as cooling or heating specific areas, unidirectional airflow is inadequate. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the existing technology and provide a cavity fan foundation with a wide air supply range and multiple functions.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A cavity-type fan foundation includes: a fan body and a base, wherein the base includes:

[0006] Mounting base for independent and fixed installation;

[0007] The support shaft is rotatably installed inside the shaft hole of the mounting base, and an assembly plate is provided on the support shaft. The assembly plate is rotatably installed in the groove of the mounting base, and the fan body is installed on the assembly plate.

[0008] Two connecting shafts are rotatably installed in the inner cavity of the mounting base, and the two connecting shafts are symmetrical about the support shaft. A sector gear is provided on the connecting shaft.

[0009] The transmission gear is coaxially mounted on the support shaft, and the two sector gears are respectively meshed with the transmission gear;

[0010] The drive mechanism is installed in the inner cavity of the mounting base, and the drive mechanism provides opposite rotational forces to the two connecting shafts to realize the reciprocating oscillation of the fan body.

[0011] The transmission gear can engage with at most one sector gear at a time.

[0012] Furthermore, the drive mechanism includes:

[0013] The drive motor is installed inside the cavity of the mounting base, and a worm gear is coaxially mounted on the output end of the drive motor.

[0014] Two worm gears are coaxially mounted on two connecting shafts, and the worm meshes with the two worm gears.

[0015] The auxiliary mechanism, installed inside the cavity of the mounting base, is used to resist the rotational inertia of the support shaft after the sector gear and the transmission gear disengage.

[0016] Furthermore, the two worm gears are symmetrically mounted at both ends of the rotation axis of the worm.

[0017] Furthermore, the auxiliary mechanisms include:

[0018] Two fixed brackets are installed in the cavity of the mounting base respectively. A limit beam is installed between the two fixed brackets, and the limit beam is provided with an arc groove. The arc of the arc groove is the same as the rotation angle of the support shaft.

[0019] The limiting post is fixedly installed on the support shaft, and the limiting post is slidably connected to the arc groove of the limiting beam.

[0020] Furthermore, buffer pads are provided at both ends of the arc groove of the limiting beam, and when the sector gear and the transmission gear are disengaged, the limiting post is in contact with one end of the arc groove.

[0021] Furthermore, the worm gear is rotatably mounted in the inner hole of the fixed bracket.

[0022] Furthermore, the mounting base is equipped with casters.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The mounting base provides a stable foundation, ensuring the reliability of the overall structure. The support shaft serves as the main support and rotation center, and with the damping ring, it reduces vibration and noise during rotation, improving operational stability. The assembly plate facilitates the installation and positioning of the fan body. Two connecting shafts and sector gears, symmetrically arranged relative to the support shaft, cooperate with the transmission gear 7 coaxially mounted on the support shaft to form a unique transmission structure. The drive mechanism provides the two connecting shafts with opposite rotational forces, and the transmission gear meshes with at most one sector gear at a time. This allows the sector gear to drive the transmission gear when the connecting shaft rotates, thereby driving the support shaft and the fan body to reciprocate. Compared to traditional fixed-installation fans, this structure can expand the fan's air delivery range and improve air circulation efficiency. It can be applied to various scenarios, such as ventilation in large factories and air exchange in agricultural greenhouses, effectively improving the fan's performance and meeting the ventilation needs of different environments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0026] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0028] Figure 4 This is an exploded structural diagram of the drive mechanism of this utility model;

[0029] Figure 5 This is a schematic diagram of the auxiliary mechanism structure of this utility model;

[0030] The labels in the diagram indicate:

[0031] 1. Fan body; 2. Mounting base; 3. Support shaft; 4. Assembly plate; 5. Connecting shaft; 6. Sector gear; 7. Transmission gear; 8. Drive mechanism; 81. Drive motor; 82. Worm gear; 83. Worm wheel; 84. Auxiliary mechanism; 84a. Fixing frame; 84b. Limiting beam; 84c. Limiting post; 9. Fuma wheel. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0033] like Figures 1 to 5 As shown, a cavity-type fan foundation of this utility model includes: a fan body 1 and a base, wherein the base includes:

[0034] Mounting base 2 is an independently fixed part of the entire device's functional execution section;

[0035] The support shaft 3 is rotatably installed inside the shaft hole of the mounting base 2, serving as the main support and rotation center of the fan body 1. A damping ring is provided at the rotatable connection between the support shaft 3 and the mounting base 2, and an assembly plate 4 is provided on the support shaft 3. The assembly plate 4 is rotatably installed in the groove of the mounting base 2, and the fan body 1 is installed on the assembly plate 4.

[0036] Two connecting shafts 5 are rotatably installed in the inner cavity of the mounting base 2, and the two connecting shafts 5 are symmetrically arranged with respect to the support shaft 3. A sector gear 6 is provided on the connecting shaft 5.

[0037] The transmission gear 7 is coaxially mounted on the support shaft 3, and the two sector gears 6 are respectively meshed with the transmission gear 7;

[0038] The drive mechanism 8 is installed in the inner cavity of the mounting base 2, and the drive mechanism 8 provides opposite rotational forces to the two connecting shafts 5 respectively, so as to realize the reciprocating swing of the fan body 1.

[0039] The transmission gear 7 can mesh with at most one sector gear 6 at the same time to realize the reciprocating oscillation of the fan body 1;

[0040] In this embodiment, the mounting base 2 provides a stable foundation to ensure the reliability of the overall structure. The support shaft 3 serves as the main support and rotation center. With the help of the damping ring, it can reduce vibration and noise during rotation and improve the smoothness of operation. The assembly plate 4 facilitates the installation and positioning of the fan body 1. Two connecting shafts 5 and sector gears 6 are symmetrically arranged relative to the support shaft 3. They cooperate with the transmission gear 7 coaxially mounted on the support shaft 3 to form a unique transmission structure. The drive mechanism 8 provides the two connecting shafts 5 with opposite rotational forces. The transmission gear 7 can mesh with at most one sector gear 6 at the same time. When the connecting shaft 5 rotates, the sector gear 6 drives the transmission gear 7, thereby driving the support shaft 3 and the fan body 1 to achieve reciprocating oscillation. Compared with traditional fixed-installation fans, this structure can expand the air delivery range of the fan and improve the air circulation efficiency. It can be applied to various scenarios, such as ventilation of large factories and ventilation of agricultural greenhouses, effectively improving the efficiency of fan use and meeting the ventilation needs of different environments.

[0041] As a preferred embodiment of the above technical solution, such as Figures 2 to 5 As shown, the drive mechanism 8 includes:

[0042] The drive motor 81 is installed inside the cavity of the mounting base 2, and the worm gear 82 is coaxially mounted on the output end of the drive motor 81.

[0043] Two worm gears 83 are coaxially mounted on two connecting shafts 5, and the worm 82 is meshed with the two worm gears 83.

[0044] The auxiliary mechanism 84 is installed inside the cavity of the mounting base 2 to resist the rotational inertia of the support shaft 3 after the sector gear 6 and the transmission gear 7 disengage.

[0045] Two worm gears 83 are symmetrically installed at both ends of the rotation axis of the worm 82;

[0046] In this embodiment, the drive motor 81 serves as the power source. It meshes with a worm gear 82, which is coaxially mounted, and two worm wheels 83 symmetrically distributed at both ends of the worm gear 82's rotation axis. This synchronously transmits power to the two connecting shafts 5. Utilizing the self-locking and stability of the worm gear transmission, the two connecting shafts 5 receive driving forces with opposite directions and consistent speeds. This allows the sector gear 6 to smoothly drive the transmission gear 7 and support shaft 3, achieving uniformity and controllability of the fan body 1's swing angle. Simultaneously, the self-locking function ensures position locking during non-working conditions. The auxiliary mechanism 84 effectively resists the rotational inertia of the support shaft 3 after the sector gear 6 and transmission gear 7 disengage, preventing excessive swinging or swaying due to inertia. This ensures smooth start-stop of the fan body 1 during reciprocating swing, reducing mechanical impact and extending the service life of components such as the support shaft 3 and transmission gear 7. It also improves the accuracy of the swing angle, ensuring precise air delivery coverage of the target area. This drive structure not only boasts high transmission efficiency and low noise but also enhances the stability and reliability of the entire fan foundation through mechanical limiting and inertia cancellation mechanisms.

[0047] As a preferred embodiment of the above technical solution, such as Figures 2 to 5 As shown, the auxiliary mechanism 84 includes:

[0048] Two fixed brackets 84a are respectively installed in the cavity of the mounting base 2. A limiting beam 84b is installed between the two fixed brackets 84a, and an arc groove is provided on the limiting beam 84b. The arc of the arc groove is the same as the rotation angle of the support shaft 3.

[0049] The limiting post 84c is fixedly installed on the support shaft 3, and the limiting post 84c is slidably connected to the arc groove of the limiting beam 84b;

[0050] In this embodiment, two fixed brackets 84a are installed in the cavity of the mounting base 2 to provide stable support for the limiting beam 84b. The arc of the circular groove on the limiting beam 84b is the same as the rotation angle of the support shaft 3, providing precise guidance for the sliding of the limiting post 84c. When the sector gear 6 and the transmission gear 7 mesh and disengage, the limiting post 84c, which is fixedly installed on the support shaft 3, slides along the circular groove. Through mechanical limiting, it resists the rotational inertia of the support shaft 3, preventing the fan body 1 from swinging excessively or shaking, and preventing the sector gear 6 and the transmission gear 7 from colliding. This structural design not only limits the rotation range of the support shaft 3 and ensures the accuracy of the swing angle, but also reduces rigid collisions between mechanical parts through the sliding cooperation between the circular groove and the limiting post 84c, reducing wear and noise, and extending the service life of components such as the support shaft 3 and the transmission gear 7. At the same time, it makes the fan body 1 start and stop smoothly during the reciprocating swing, improving the controllability and uniformity of the air supply range, and meeting the needs of industrial, agricultural and other scenarios for the stability and precision of ventilation equipment.

[0051] As a preferred embodiment of the above technical solution, such as Figures 2 to 5As shown, buffer pads are provided at both ends of the arc groove of the limiting beam 84b, and when the sector gear 6 and the transmission gear 7 are engaged and disengaged, the limiting post 84c is in contact with one end of the arc groove.

[0052] In this embodiment, when the sector gear 6 disengages from the transmission gear 7 and the limiting post 84c slides to the end of the arc groove, the buffer pad can effectively absorb the impact force of the limiting post 84c, avoiding rigid collisions that could damage components such as the support shaft 3 and the limiting beam 84b, reducing mechanical wear, and extending the service life of the auxiliary mechanism 84 and even the entire fan foundation. At the same time, the elastic buffering effect of the buffer pad can significantly reduce the vibration and noise generated when the fan swings and reverses, making the fan body 1 run more smoothly and quietly during the reciprocating swing process.

[0053] As a preferred embodiment of the above technical solution, such as Figures 2 to 5 As shown, the worm gear 82 is rotatably installed in the inner hole of the fixing bracket 84a;

[0054] In this embodiment, the fixing bracket 84a provides a stable rotation fulcrum for the worm 82, effectively reducing the wobbling and offset of the worm 82 during the transmission process, ensuring the accuracy of its meshing with the worm wheel 83, ensuring stable and efficient power transmission, and avoiding a decrease in transmission efficiency or increased wear of components due to loosening of the worm 82.

[0055] As a preferred embodiment of the above technical solution, such as Figures 1 to 2 As shown, the mounting base 2 is equipped with a caster wheel 9;

[0056] In this embodiment, the caster wheel 9 combines the flexible steering of a caster wheel with the fixing function of a foot cup. During the equipment transportation, installation and commissioning stages, the caster wheel 9 can be adjusted to touch the ground. With its omnidirectional rotation characteristics, it can easily move the wind turbine foundation to different working areas, reducing the intensity of manual handling and the difficulty of equipment relocation. When the wind turbine foundation reaches the designated installation position, the caster wheel 9 can be adjusted to make the equipment land smoothly and be fixed, ensuring that the base of the wind turbine body 1 is stable and does not shake when it is running, and avoiding the impact of vibration caused by moving parts on the wind turbine performance.

[0057] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A cased fan foundation, characterised in that, The utility model relates to a fan body (1) and base, wherein the base comprises: Mounting base (2) is independently fixedly arranged; Support shaft (3) is rotatably installed in the shaft hole of mounting base (2), and an assembling disc (4) is arranged on support shaft (3), the assembling disc (4) is rotatably installed in the slot cavity of mounting base (2), and fan body (1) is installed on assembling disc (4); Two connecting shafts (5) are rotatably installed in the inner cavity of mounting base (2), and two connecting shafts (5) are arranged in axial symmetry with respect to support shaft (3), and a sector gear (6) is arranged on connecting shaft (5); Transmission gear (7) is coaxially installed on support shaft (3), and two sector gears (6) are rotatably installed on transmission gear (7) respectively; Driving mechanism (8) is installed in the inner cavity of mounting base (2), and driving mechanism (8) provides opposite rotating force to two connecting shafts (5) respectively, so that fan body (1) realizes reciprocating swing. Transmission gear (7) is rotatably connected with one sector gear (6) at most.

2. The cased fan foundation of claim 1, wherein, The driving mechanism (8) comprises:

3. The cased fan foundation of claim 1, wherein, Driving motor (81) is installed in the cavity of mounting base (2), and the output end of driving motor (81) is coaxially provided with worm (82); Two worm gears (83) are coaxially installed on two connecting shafts (5) respectively, and worm (82) is rotatably connected with two worm gears (83); Auxiliary mechanism (84) is installed in the cavity of mounting base (2), and is used for resisting the rotational inertia of support shaft (3) after sector gear (6) is rotatably connected with transmission gear (7). Two worm gears (83) are symmetrically installed at both ends of the rotation axis of worm (82).

4. The cased fan foundation of claim 3, wherein The auxiliary mechanism (84) comprises:

5. The cased fan foundation of claim 3, wherein, Two fixed frames (84a) are installed in the cavity of mounting base (2) respectively, a limiting beam (84b) is installed between two fixed frames (84a), an arc slot is arranged on limiting beam (84b), and the arc degree of arc slot is same as the rotation angle of support shaft (3); Limiting column (84c) is fixedly installed on support shaft (3), and limiting column (84c) is rotatably connected with the arc slot of limiting beam (84b). The arc slot of limiting beam (84b) is rotatably connected with limiting column (84c).

6. The cased fan foundation of claim 5, wherein, Worm (82) is rotatably installed in the inner hole of fixed frame (84a).

7. The cased fan foundation of claim 5, wherein, Forma wheel (9) is arranged on mounting base (2).

8. The cased fan foundation of claim 1, wherein, ​

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