Industrial large fan

Abstract

The utility model relates to the technical field of industrial fans, in particular to a large industrial fan which is characterized in that fan blades are mounted on a fan blade mounting frame, the fan blade mounting frame and a shell are mounted through bolts, a mounting containing cavity is formed after the fan blade mounting frame and the shell are mounted, and a power device and a planetary gear speed reducer are mounted in the mounting containing cavity; a planetary gear reduction device is installed on an output shaft of the power device, the power device and the planetary gear reduction device are spliced into a whole, and the planetary gear reduction device is connected with the shell. The power device and the planetary gear speed reducer are integrally formed, the coaxiality is high, the transmission loss is reduced, the transmission efficiency is improved, the influence of vibration and impact is reduced, the integrity and compactness of equipment are remarkably improved, connecting parts are reduced, and the installation and maintenance process is simplified; the precision of the reduction ratio is improved through the planet wheel assembly, the torque is improved while the power is reduced through the planet gear reducer, and therefore more electricity is saved.

Description

Technical Field

[0001] This utility model relates to the field of industrial fan technology, and in particular to a large industrial fan. Background Technology

[0002] Industrial fans are large ventilation devices used to provide forced airflow in industrial environments to achieve functions such as ventilation, cooling, and heat dissipation. Industrial fans use motors to drive blades to rotate, generating airflow that exhausts existing air while simultaneously drawing in fresh air. This airflow removes heat, lowering the ambient temperature. In high-temperature environments, industrial fans can be used in conjunction with air conditioning systems to enhance cooling efficiency. However, existing large industrial fans have the following shortcomings:

[0003] First, traditional industrial fans are high-power electric fans. The motor and planetary reducer of traditional industrial fans are usually separate structures. The working process is as follows: the motor drives the reduction mechanism, which in turn drives the fan blade mounting frame to rotate. The structure is complex and inconvenient to install. They need to be installed and debugged separately. Moreover, maintenance requires separate inspection and maintenance of the motor and planetary reducer, which increases the workload and time cost of maintenance. This design not only increases the installation steps and difficulty, but also reduces the overall reliability due to the need for additional connecting parts (such as couplings or pulleys).

[0004] Secondly, the split structure results in a larger equipment size, which is not conducive to installation and use in industrial environments with limited space. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide an industrial large fan in order to solve the problems existing in the prior art mentioned above.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an industrial large fan, including a fan blade mounting frame and a housing, on which fan blades are mounted, and the fan blade mounting frame and the housing are connected by bolts, forming a mounting cavity after the fan blade mounting frame and the housing are installed, in which a power unit and a planetary gear reducer are installed, and the planetary gear reducer is installed on the output shaft of the power unit, and the power unit and the planetary gear reducer are combined to form a whole, and the planetary gear reducer is connected to the housing.

[0007] Furthermore, the power unit includes a motor housing and an output shaft, the output shaft being disposed within the motor housing.

[0008] Furthermore, the planetary gear reducer includes a sun gear, a planetary gear cage, a gear ring, and several planetary gears. The gear ring is tightly attached to the inner wall of the outer casing. The sun gear and the planetary gear cage are mounted on the output shaft. The sun gear is connected to the motor housing in the power unit by bolts. The planetary gears are mounted on the pins of the planetary gear cage by bearings. The planetary gears mesh with the sun gear and the gear ring respectively.

[0009] Furthermore, there is an interference fit between the gear ring and the housing.

[0010] Furthermore, the sun gear includes a sun gear and a base. The sun gear is mounted on the base, which has several openings along its outer circumferential wall. Each opening has a mounting hole on its bottom surface.

[0011] Furthermore, the outer casing is covered with a cover and is bolted to the fan blade mounting bracket. Several heat dissipation holes are provided on the outer peripheral wall of the cover.

[0012] Furthermore, a stepped hole is provided in the middle of the fan blade mounting bracket, an annular groove is provided on the inner surface of the fan blade mounting bracket, an upwardly extending protruding ring is provided at the edge of the annular groove, and a number of reinforcing ribs arranged in a ring array are provided in the annular groove. Each reinforcing rib is provided with a first screw hole, and a second screw hole is provided at the edge of the fan blade mounting bracket.

[0013] Furthermore, one end of the output shaft is connected to the connecting shaft. A blind hole is provided on the output shaft along the central axis. An embedded opening groove and several planar slots are provided on the outer peripheral wall of the connecting end of the output shaft. A first oblique screw hole is provided on the shaft body of the output shaft at the bottom of the embedded opening groove. Several mounting screw holes are provided on the bottom surface of the planar slots. Both the oblique screw holes and the mounting screw holes are provided through the blind hole.

[0014] Furthermore, the output shaft has an external thread on its shaft body, which is located at the bottom of the planar groove and the embedded opening groove.

[0015] Furthermore, the bottom of the blind hole is located at the power unit mounting location, and the shaft body of the output shaft is provided with a second oblique screw hole that communicates with the bottom of the blind hole. A mounting plate is mounted on the output shaft, and a mounting lug extending downward is provided on the outer periphery of the mounting plate. Each mounting lug is provided with a round hole.

[0016] The beneficial effects of this utility model are as follows: The power unit and the planetary gear reduction device of this utility model are integrally formed, with high coaxiality, which reduces transmission loss, improves transmission efficiency, reduces the impact of vibration and impact, significantly improves the integrity and compactness of the equipment, reduces connecting parts, and simplifies the installation and maintenance process.

[0017] The accuracy of the reduction ratio is improved by using planetary gear components, and the torque is increased while reducing power by using planetary gear reducers, thus saving more energy and making them suitable for the high load requirements of industrial large fans.

[0018] Furthermore, the overall design makes the equipment smaller, making it suitable for use in industrial environments with limited space. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is the front view of this utility model;

[0022] Figure 3 This is a cross-sectional view of the present invention along the AA direction;

[0023] Figure 4 This is an exploded view of this utility model;

[0024] Figure 5 This is a utility model Figure 4 An exploded view from another direction;

[0025] Figure 6 This is a schematic diagram of the sun gear of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the fan blade mounting bracket of this utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the input shaft of this utility model;

[0028] Figure 9 This is a utility model Figure 8 A structural diagram from another direction;

[0029] In the diagram: 1. Fan blade mounting bracket, 11. Stepped hole, 12. Annular groove, 13. Raised ring, 14. Reinforcing rib, 15. First screw hole, 16. Second screw hole.

[0030] 2. Outer shell, 3. Cover,

[0031] 4. Power unit; 41. Motor housing; 42. Output shaft; 43. Embedded slot; 44. First oblique threaded hole; 45. Blind hole; 46. Mounting threaded hole; 47. External threaded portion; 48. Mounting disc; 49. Mounting lug; 410. Second oblique threaded hole.

[0032] 5. Planetary gear reducer, 51. Sun gear, 511. Sun gear, 512. Base, 513. Opening, 514. Mounting hole, 52. Planetary gear cage, 53. Gear ring, 54. Planetary gear. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0034] like Figures 1-9 An industrial fan is shown, including a blade mounting frame 1 and a housing 2. The housing 2 is covered with a cover 3, which is bolted to the blade mounting frame 1. The outer peripheral wall of the cover 3 is provided with several heat dissipation holes.

[0035] The fan blade mounting bracket 1 is equipped with fan blades. The fan blade mounting bracket 1 and the outer shell 2 are connected by bolts. After installation, the fan blade mounting bracket 1 and the outer shell 2 form an installation cavity. The power unit 4 and the planetary gear reducer 5 are installed in the installation cavity. The power unit 4 and the planetary gear reducer 5 are provided with sealed protection to prevent dust and foreign objects from entering. The planetary gear reducer 5 is installed on the output shaft 42 of the power unit 4. The power unit 4 and the planetary gear reducer 5 are assembled into a whole, integrally formed, with high coaxiality, reducing energy loss. At the same time, the structure is compact and saves space. The planetary gear reducer 5 is connected to the outer shell 2.

[0036] like Figures 4-5 As shown, the power unit 4 is a motor. The power unit 4 includes a motor housing 41 and an output shaft 42. The output shaft 42 passes through the motor housing 41 to ensure the coaxiality and stability of power transmission; it simplifies the connection between the motor and the reduction device and reduces assembly errors.

[0037] like Figures 4-5 As shown, the planetary gear reducer includes a sun gear 51, a planetary gear cage 52, a ring gear 53, and several planetary gears 54. The ring gear 53 is tightly attached to the inner wall of the outer casing 2, and the outer casing 2 provides rigid support, reducing the risk of deformation of the ring gear 53, improving meshing accuracy and transmission smoothness. The ring gear 53 and the outer casing 2 have an interference fit, which enhances the connection strength between the ring gear 53 and the outer casing 2 and avoids relative slippage; reduces vibration and noise, and improves operational stability. The sun gear 51 and the planetary gear cage 52 are mounted on the output shaft 42. The sun gear 51 is connected to the motor housing 41 in the power unit 4 by bolts. The planetary gears 54 are mounted on the pins of the planetary gear cage 52 by bearings. The planetary gears 54 mesh with the sun gear 51 and the ring gear 53 respectively. By utilizing the reduction characteristics of planetary gears, high torque output is achieved, which is suitable for the high load requirements of large fans.

[0038] like Figure 6 As shown, the sun gear 51 includes a sun gear 511 and a base 512. The sun gear 511 is mounted on the base 512. The base 512 has several openings 513 along its outer circumferential wall. Each opening 513 has a mounting hole 514 on its bottom surface, which reduces the weight of the sun gear and lowers its rotational inertia. The mounting hole is used to fix the sun gear, which improves the assembly accuracy. The opening design facilitates heat dissipation and prevents heat accumulation.

[0039] like Figure 7 As shown, a stepped hole 11 is provided in the middle of the fan blade mounting bracket 1, and an annular groove 12 is provided on the inner surface of the fan blade mounting bracket 1 to provide precise axial positioning and ensure the coaxiality of the fan blade installation; an upwardly extending protruding ring 13 is provided at the edge of the annular groove 12, the protruding ring 13 enhances the structural rigidity and prevents deformation, and a number of reinforcing ribs 14 arranged in a ring array are provided in the annular groove 12, each reinforcing rib 14 is provided with a first screw hole 15, and a second screw hole 16 is provided at the edge of the fan blade mounting bracket 1 to improve the bending strength of the fan blade mounting bracket 1; the first screw hole 15 and the second screw hole 16 are evenly distributed, which facilitates the modular installation and disassembly of the fan blade.

[0040] like Figures 8-9 As shown, one end of the output shaft 42 is connected to the connecting shaft. A blind hole 45 is provided on the output shaft 42 along the central axis. An embedded opening groove 43 and several planar grooves are provided on the outer peripheral wall of the connecting end of the output shaft 42. A first oblique screw hole 44 is provided on the shaft body of the output shaft 42 at the bottom of the embedded opening groove 43. Several mounting screw holes 46 are provided on the bottom surface of the planar grooves. The oblique screw hole 44 and the mounting screw hole 46 are both connected through the blind hole 45. The through hole design realizes multi-directional fastening and improves the connection strength between the output shaft 42 and other components.

[0041] like Figures 8-9 As shown, the output shaft 42 has an external thread 47 on its shaft body, which is located at the bottom of the planar groove and the embedded opening groove 43.

[0042] like Figures 1-3 As shown, the bottom of the blind hole 45 is located at the installation location of the power unit 4. The shaft body of the output shaft 42 is provided with a second oblique screw hole 410 that communicates with the bottom of the blind hole 45. The output shaft 42 is equipped with a mounting plate 48. The outer periphery of the mounting plate 48 is provided with downwardly extending mounting lugs 49. Each mounting lug 49 is provided with a round hole. In order to disperse stress concentration, the first oblique screw hole 44 and the second oblique screw hole 410 are provided to prevent the shaft body from cracking.

[0043] Work process:

[0044] The inner wall of the outer casing 2 is fixedly connected to the gear ring 53. When the power unit 4 rotates, the output shaft 42 drives the sun gear 51 to rotate, thereby driving the three planetary gears 54 meshing with it to rotate. Simultaneously, pins on the planetary gear cage 52 are installed in the corresponding planetary gears 54, causing the three planetary gears 54 to rotate on their own axes and not revolve around a central axis, thus driving the gear ring 53 to rotate. Finally, this drives the outer casing 2 and the fan blade mounting bracket 1 to rotate, completing the fan's rotation. Based on the above-described ideal embodiment of this utility model, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification but must be determined by the scope of the claims.

Claims

1. An industrial fan, characterized by: The utility model provides a fan blade mounting frame (1) and shell (2) are installed on the fan blade mounting frame (1) and install through bolt between fan blade mounting frame (1) and shell (2), install after fan blade mounting frame (1) with shell (2) and form installation containing cavity, install power device (4) and planetary gear reduction device (5) in the installation containing cavity, install planetary gear reduction device (5) on the output shaft (42) of power device (4), power device (4) and planetary gear reduction device (5) split into a whole, and planetary gear reduction device (5) is connected with shell (2).

2. An industrial fan as claimed in claim 1, wherein: The power device (4) comprises a motor housing (41) and an output shaft (42), and the output shaft (42) is arranged in the motor housing (41).

3. An industrial fan as claimed in claim 1, wherein: The planetary gear reduction device comprises a sun gear (51), a planetary wheel holder (52), a ring gear (53) and a plurality of planetary wheels (54), the ring gear (53) is tightly attached to the inner wall of the shell (2), the sun gear (51) and the planetary wheel holder (52) are arranged on the output shaft (42), the sun gear (51) is connected to the motor housing (41) of the power device (4) through a bolt, the planetary wheels (54) are arranged on the pin shaft of the planetary wheel holder (52) through bearings, and the planetary wheels (54) are respectively meshed with the sun gear (51) and the ring gear (53).

4. An industrial fan as claimed in claim 3, wherein: The ring gear (53) is in interference fit with the shell (2).

5. An industrial fan as claimed in claim 3, wherein: The sun gear (51) comprises a sun gear (511) and a base (512), the sun gear (511) is arranged on the base (512), a plurality of openings (513) are formed in the outer circumferential wall of the base (512), and an installation hole (514) is formed in the bottom surface of each opening (513).

6. An industrial fan as claimed in claim 1, wherein: The shell (2) is covered with a cover (3) and is bolted to the fan blade mounting frame (1), and a plurality of heat dissipation holes are formed in the outer circumferential wall of the cover (3).

7. An industrial fan as claimed in claim 1, wherein: A stepped hole (11) is formed in the middle of the fan blade mounting frame (1), an annular groove (12) is formed in the inner surface of the fan blade mounting frame (1), an upwardly extending convex ring (13) is arranged at the edge of the annular groove (12), a plurality of reinforcing ribs (14) are arranged in the annular groove (12) in an annular array, a first screw hole (15) is formed in each reinforcing rib (14), and a second screw hole (16) is formed in the edge of the fan blade mounting frame (1).

8. An industrial fan as claimed in claim 1, wherein: One end of the output shaft (42) is connected to a connecting shaft, a blind hole (45) is formed in the output shaft (42) along the central axis, a plurality of flat grooves and an embedded opening groove (43) are formed in the outer circumferential wall of the connecting end of the output shaft (42), a first inclined screw hole (44) is formed in the shaft of the output shaft (42) at the bottom of the embedded opening groove (43), a plurality of installation screw holes (46) are formed in the bottom surface of the flat grooves, and the inclined screw hole (44) and the installation screw hole (46) are both arranged through the blind hole (45).

9. An industrial fan as claimed in claim 8, wherein: An external thread part (47) is arranged on the shaft of the output shaft (42), and the external thread part (47) is located at the bottom of the flat grooves and the embedded opening groove (43).

10. An industrial fan as claimed in claim 8, wherein: The bottom of the blind hole (45) is located at the installation position of the power device (4), the shaft body of the output shaft (42) is provided with a second inclined threaded hole (410) penetrating the bottom of the blind hole (45), the output shaft (42) is provided with a mounting disc (48), the outer circumferential edge of the mounting disc (48) is provided with a downwardly extending mounting lug (49), and a circular hole is formed in each mounting lug (49).

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