Speed reducer and power device for industrial fan

Abstract

The utility model provides a speed reducer and power device for an industrial fan, and the speed reducer and power device comprises a gear mechanism, the input end of the gear mechanism is used for being connected with a first output shaft of a motor, and the output end of the gear mechanism is used for being connected with an impeller of the industrial fan; the reduction gearbox is provided with a box body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged at the two opposite ends of the box body, the first connecting part is used for being connected with a motor body of the motor, the second connecting part is used for being connected with a shell of the industrial fan, and the box body, the first connecting part and the second connecting part form a cavity; the gear mechanism is contained in the cavity, and the box body, the first connecting part and the second connecting part are all of structures made of aluminum materials. According to the speed reducer, the weight of the speed reducer can be reduced, the lightweight design of the speed reducer is achieved, therefore, the motor load can be reduced, a power device adopting the speed reducer can achieve lower energy consumption, and then the operation cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial fan, and in particular to a speed reducer for industrial fan and a power device. BACKGROUND

[0002] Industrial fans have a wide range of applications in ventilation, cooling, dust removal, drying and other fields. Since industrial fans usually require large air volume and air pressure, their power devices must have high efficiency, reliability, stability, maintainability, safety and environmental protection, etc. to meet the needs of different application scenarios.

[0003] At present, the power device of the industrial fan on the market mainly adopts the combination of a motor and a speed reducer. The first output shaft of the motor is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the industrial fan. The motor drives the gear mechanism in the speed reducer through the rotation of the first output shaft, so as to stably transmit the torque to the industrial fan. However, the traditional speed reducer has a large weight, which increases the load of the motor and in turn increases the energy consumption. CONTENT OF THE UTILITY MODEL

[0004] The embodiments of the present application provide a speed reducer for industrial fan and a power device to solve the problems in the related art, and the technical solutions are as follows:

[0005] In a first aspect, the embodiments of the present application provide a speed reducer for industrial fan, comprising:

[0006] a gear mechanism, an input end of the gear mechanism being used for connecting with a first output shaft of a motor, and an output end of the gear mechanism being used for connecting with an impeller of an industrial fan; and

[0007] a speed reducer box, the speed reducer box being provided with a box body, a first connecting part and a second connecting part, the first connecting part and the second connecting part being disposed at opposite ends of the box body, the first connecting part being used for connecting with a body of the motor, the second connecting part being used for connecting with a casing of the industrial fan, the box body, the first connecting part and the second connecting part forming a cavity, and the cavity accommodating the gear mechanism, wherein the box body, the first connecting part and the second connecting part are structures made of aluminum material.

[0008] In an embodiment, the box body, the first connecting part and the second connecting part are integrally arranged together.

[0009] In an embodiment, a first gear sleeve of the gear mechanism is arranged on the first output shaft of the motor, and the first gear sleeve can rotate with the first output shaft of the motor.

[0010] In an embodiment, the gear mechanism further comprises:

[0011] an input shaft rotatably arranged in the cavity;

[0012] a second gear arranged on an input end of the input shaft, the second gear being rotatable with the first gear;

[0013] a third gear arranged on an output end of the input shaft, the third gear being rotatable with the input shaft;

[0014] a second output shaft rotatably arranged in the cavity, an output end of the second output shaft being configured to be connected to an impeller of an industrial fan;

[0015] a fourth gear arranged on an input end of the second output shaft, the fourth gear being rotatable with the third gear.

[0016] In an embodiment, the third gear and the input shaft are integrally arranged together.

[0017] In an embodiment, tooth surfaces of the first gear, the second gear, the third gear and the fourth gear are all provided with lightening holes.

[0018] In an embodiment, the first gear, the second gear, the third gear and the fourth gear are all 6-grade precision gears.

[0019] In an embodiment, the speed reducer for industrial fans further comprises:

[0020] a first bearing arranged in the cavity, an inner ring of the first bearing being arranged on the input end of the input shaft, the inner ring of the first bearing being rotatable with the input shaft;

[0021] a second bearing arranged in the cavity, an inner ring of the second bearing being arranged on the output end of the input shaft, the inner ring of the second bearing being rotatable with the input shaft.

[0022] In an embodiment, the speed reducer for industrial fans further comprises:

[0023] a third bearing arranged in the cavity, the third bearing being located between the first bearing and the second bearing, an inner ring of the third bearing being arranged on the input shaft, the inner ring of the third bearing being rotatable with the input shaft.

[0024] In an embodiment, the speed reducer for industrial fans further comprises:

[0025] A fourth bearing is arranged in the cavity, an inner ring of the fourth bearing is sleeved on an input end of the second output shaft, and the inner ring of the fourth bearing can rotate with the second output shaft;

[0026] A fifth bearing is arranged in the cavity, an inner ring of the fifth bearing is sleeved on an output end of the second output shaft, and the inner ring of the fifth bearing can rotate with the second output shaft, and the fifth bearing is a double-row tapered roller bearing.

[0027] In a second aspect, the embodiments of the present application provide a power device comprising the speed reducer for industrial fans.

[0028] The advantages or beneficial effects of the above technical solutions at least include:

[0029] The speed reducer for industrial fans has the advantages that the box body, the first connecting part and the second connecting part are all made of aluminum material, that is, the speed reducer box is made of aluminum material, the weight of the speed reducer box is reduced, the lightweight design of the speed reducer box is realized, the motor load is reduced, the power device using the speed reducer can realize lower energy consumption, and the operation cost is reduced; in addition, the lighter speed reducer box can make the speed reducer run more balanced, which helps to reduce vibration and noise and makes the speed reducer run more smoothly.

[0030] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0031] In the drawings, like reference numerals refer to same or similar functionalities throughout the several views. The drawings are not necessarily to scale. It is to be understood that the drawings only depict several embodiments in accordance with the disclosure and should not be interpreted to limit the scope of the disclosure.

[0032] Figure 1 A cross-sectional view of the speed reducer for industrial fans of the present application.

[0033] REFERENCE NUMERALS

[0034] 1, gear mechanism; 11, first gear; 12, input shaft; 13, second gear; 14, third gear; 15, second output shaft; 16, fourth gear; 2, speed reducer box; 21, box body; 22, first connecting part; 23, second connecting part; 24, cavity; 3, first bearing; 4, second bearing; 5, third bearing; 6, fifth bearing; 7, oil seal; 10, motor. DETAILED DESCRIPTION

[0035] In the following, certain example embodiments are simply described. As those skilled in the art will realize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the application.

[0036] Referring to Figure 1 The utility model discloses a speed reducer for industrial fan, including:

[0037] Gear mechanism 1, gear mechanism 1's input is used to be connected with motor 10's first output shaft, and gear mechanism 1's output is used to be connected with the impeller of industrial fan, and gear mechanism 1 is provided with gear mechanism 1's input and gear mechanism 1's output, and gear mechanism 1's input is used to be connected with motor 10's first output shaft, and gear mechanism 1's output is used to be connected with the impeller of industrial fan.

[0038] Speed reducer box 2, speed reducer box 2 is equipped with box 21, first connecting portion 22 and second connecting portion 23, and first connecting portion 22 and second connecting portion 23 are divided and are located at the opposite ends of box 21, and first connecting portion 22 is used to be connected with the body of motor 10, and second connecting portion 23 is used to be connected with the casing of industrial fan, and box 21, first connecting portion 22 and second connecting portion 23 form cavity 24, and cavity 24 contains gear mechanism 1, wherein box 21, first connecting portion 22 and second connecting portion 23 are all the structure made of aluminum material.

[0039] The utility model discloses a speed reducer for industrial fan, since box 21, first connecting portion 22 and second connecting portion 23 are all the structure made of aluminum material, namely speed reducer box 2 is the structure made of aluminum material, can reduce the weight of speed reducer box 2, realizes the lightweight design of speed reducer box 2, therefore, can reduce motor 10 load, makes the power device of using this speed reducer can realize lower energy consumption, and further reduces operating cost, in addition, lighter speed reducer box 2 can make speed reducer run more balanced, help reduce vibration and noise, make speed reducer run more smoothly.

[0040] Among them, the above-mentioned aluminum material is high-strength aluminum material, so that the speed reducer box 2 has better structural strength, so that it can meet the use requirement.

[0041] Referring to Figure 1In an embodiment, the box 21, the first connecting part 22 and the second connecting part 23 are integrally arranged together, that is, the box 21, the first connecting part 22 and the second connecting part 23 are integrally formed, forming an integrated speed reducer 2 structure, so that the box 21 and the first connecting part 22 and the box 21 and the second connecting part 23 are connected without connecting parts, which can simplify the structure and further reduce the overall weight of the speed reducer 2, thereby helping to further reduce the load, vibration and noise of the motor 10; in addition, the integrated speed reducer 2 structure forms a seamless whole structure, which can improve the structural strength of the speed reducer 2; in addition, the integrated speed reducer 2 structure reduces the welding or assembly steps, which can improve the production efficiency of the speed reducer.

[0042] It can be understood that the box 21, the first connecting part 22 and the second connecting part 23 are integrally formed by an integral casting aluminum process, which can improve the forming precision of the speed reducer 2 while allowing the speed reducer 2 to be formed at a time, thereby reducing the production line floor space.

[0043] Referring to Figure 1 In an embodiment, the first gear 11 of the gear mechanism 1 is sleeved on the first output shaft of the motor 10, and the first gear 11 can rotate with the first output shaft of the motor 10. The first gear 11 is the input end of the gear mechanism 1. By installing the first gear 11 on the first output shaft of the motor 10, the space utilization of the first output shaft of the motor 10 can be improved, so that the first gear 11 does not occupy other space, thereby compressing the space and making the overall structure of the speed reducer more compact, smaller and lighter.

[0044] Referring to Figure 1 In an embodiment, the gear mechanism 1 further comprises:

[0045] The input shaft 12 is rotatably arranged in the cavity 24;

[0046] The second gear 13 is sleeved on the input end of the input shaft 12, the second gear 13 and the first gear 11 are engaged, and the second gear 13 can rotate with the first gear 11;

[0047] The third gear 14 is arranged on the output end of the input shaft 12, and the third gear 14 can rotate with the input shaft 12;

[0048] The second output shaft 15 is rotatably arranged in the cavity 24, and the output end of the second output shaft 15 is used to connect with the impeller of the industrial fan;

[0049] The fourth gear 16 is sleeved on the input end of the second output shaft 15, the fourth gear 16 is engaged with the third gear 14, and the fourth gear 16 can rotate with the third gear 14. Through the engagement of the second gear 13 with the first gear 11 and the fourth gear 16 with the third gear 14, the power output by the motor 10 can be efficiently transmitted from the input shaft 12 to the second output shaft 15, energy loss can be reduced, and transmission efficiency can be improved. In addition, through multi-stage gear transmission (first gear 11→second gear 13→input shaft 12→third gear 14→fourth gear 16→second output shaft 15), the speed reducer can realize more accurate speed and torque control, thereby adapting to different load requirements.

[0050] In an embodiment, the third gear 14 and the input shaft 12 are integrally arranged together, that is, the third gear 14 and the input shaft 12 are made by integral molding to form an integral structure, so that the third gear 14 and the input shaft 12 are connected without connecting parts, which can simplify the structure and improve the connection strength of the third gear 14 and the input shaft 12.

[0051] In an embodiment, the tooth surfaces of the first gear 11, the second gear 13, the third gear 14 and the fourth gear 16 are all provided with weight reduction holes (not shown in the figure) to reduce the weight of the speed reducer, which helps to further reduce the load, vibration and noise of the motor 10.

[0052] In an embodiment, the tooth surfaces of the first gear 11, the second gear 13, the third gear 14 and the fourth gear 16 are all provided with a plurality of weight reduction holes, which are uniformly arranged around the rotation center line of the corresponding gear to further reduce the overall weight of the speed reducer, while ensuring that the first gear 11, the second gear 13, the third gear 14 and the fourth gear 16 can all operate smoothly.

[0053] In an embodiment, the first gear 11, the second gear 13, the third gear 14 and the fourth gear 16 are all 6-grade precision gears. The 6-grade precision gears have high manufacturing and assembly precision, which can effectively reduce transmission error and improve the overall transmission precision of the speed reducer. In addition, high-precision gears can reduce energy loss and improve transmission efficiency, which helps to save energy and reduce operating costs. In addition, high-precision gears engage more smoothly, reducing noise and vibration during operation and improving the comfort and stability of the equipment. In addition, high-precision gears reduce wear and fatigue damage, thereby prolonging the service life of the gears and the entire transmission system.

[0054] Referring to Figure 1 In an embodiment, the speed reducer for industrial fans further comprises:

[0055] The first bearing 3 is arranged in the cavity 24, and an inner ring of the first bearing 3 is sleeved on an input end of the input shaft 12, and the inner ring of the first bearing 3 can rotate with the input shaft 12;

[0056] The second bearing 4 is arranged in the cavity 24, and an inner ring of the second bearing 4 is sleeved on an output end of the input shaft 12, and the inner ring of the second bearing 4 can rotate with the input shaft 12. Since the first bearing 3 and the second bearing 4 are respectively located at the input end and the output end of the input shaft 12, a double-support structure is formed, effectively reducing vibration and swing of the input shaft 12 during high-speed rotation, thereby improving the stability and reliability of the speed reducer during operation and prolonging the service life. In addition, the inner ring of the first bearing 3 and the inner ring of the second bearing 4 rotate with the input shaft 12, reducing the relative movement between the shaft and the bearing, thereby reducing friction loss, improving transmission efficiency, reducing energy loss, and reducing operating costs. In addition, the double-bearing design shares the radial and axial loads of the input shaft 12, avoids excessive stress on a single point, improves the overall load-carrying capacity of the speed reducer, and is suitable for industrial environments of industrial fans.

[0057] Referring to Figure 1 In an embodiment, the speed reducer for industrial fans further comprises:

[0058] The third bearing 5 is arranged in the cavity 24, and the third bearing 5 is located between the first bearing 3 and the second bearing 4, an inner ring of the third bearing 5 is sleeved on the input shaft 12, and the inner ring of the third bearing 5 can rotate with the input shaft 12. The third bearing 5 provides an additional support point for the input shaft 12, effectively reducing the deflection deformation of the input shaft 12, improving the overall rigidity of the speed reducer, and making the input shaft 12 more stable during high-speed operation, reducing vibration and noise. In addition, the third bearing 5 shares part of the load of the first bearing 3 and the second bearing 4, reducing their burden, reducing the wear of a single bearing, prolonging the service life of the overall bearing, and reducing the frequency of maintenance and replacement. In addition, the addition of the third bearing 5 further limits the radial runout of the input shaft 12, improves the transmission accuracy, ensures the stability of the speed reducer during operation, and reduces energy loss and equipment wear caused by vibration.

[0059] Referring to Figure 1 In an embodiment, the speed reducer for industrial fans further comprises:

[0060] The fourth bearing is arranged in the cavity 24, and an inner ring of the fourth bearing is sleeved on an input end of the second output shaft 15, and the inner ring of the fourth bearing can rotate with the second output shaft 15.

[0061] The fifth bearing 6 is arranged in the cavity 24, the inner ring of the fifth bearing 6 is sleeved on the output end of the second output shaft 15, the inner ring of the fifth bearing 6 can rotate with the second output shaft 15, and the fifth bearing 6 is a double-row tapered roller bearing. Since the fourth bearing and the fifth bearing 6 are arranged at the input end and the output end of the second output shaft 15 respectively, a double-support structure is formed, vibration and swing of the second output shaft 15 during high-speed rotation are effectively reduced, the stability and reliability of the speed reducer during operation are improved, and the service life is prolonged. In addition, the inner ring of the fourth bearing and the inner ring of the fifth bearing 6 rotate with the second output shaft 15, the relative movement between the shaft and the bearing is reduced, friction loss is reduced, transmission efficiency is improved, energy loss is reduced, and operation cost is reduced. In addition, the double-bearing design shares the radial and axial loads of the second output shaft 15, avoids excessive stress on a single point, improves the overall load-carrying capacity of the speed reducer, and is suitable for high-load industrial environments. Most importantly, since the fifth bearing 6 is a double-row tapered roller bearing, it can simultaneously bear radial and axial loads, further stabilize the output end of the second output shaft 15, ensure the stable operation of the second output shaft 15 under complex working conditions, and improve the operation stability of the industrial fan. In addition, the high rigidity and load-carrying capacity of the double-row tapered roller bearing reduce internal stress and reduce the risk of fatigue failure, further prolonging the service life.

[0062] In an embodiment, the speed reducer further comprises an oil seal 7, the oil seal 7 is arranged in an opening on the side of the cavity 24 away from the motor 10, the oil seal 7 is farther away from the fourth gear 16 than the fifth bearing 6, and the oil seal 7 is arranged around the outer peripheral wall of the second output shaft 15 to seal the gap between the speed reducer 2 and the second output shaft 15, prevent oil leakage, and prevent external impurities from entering the interior of the speed reducer 2.

[0063] The utility model discloses a kind of power devices, comprising the speed reducer for industrial fan described above.

[0064] The power device of the utility model, since the above-mentioned speed reducer is used, also based on the structure that box 21, first connecting part 22 and second connecting part 23 are made of aluminum material, that is, the structure that speed reducer 2 is made of aluminum material, the weight of speed reducer 2 can be reduced, the lightweight design of speed reducer 2 is realized, therefore, the motor 10 load can be reduced, so that the power device using the speed reducer can realize lower energy consumption, and further reduce operating cost. In addition, lighter speed reducer 2 can make speed reducer run more balanced, help to reduce vibration and noise, so that the power device runs more smoothly.

[0065] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Also, the specific features, structures, materials or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0066] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0067] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A speed reducer for an industrial fan, characterized by, The utility model relates to an industrial fan speed reducer, comprising: a gear mechanism, an input end of the gear mechanism is used for being connected with a first output shaft of a motor, and an output end of the gear mechanism is used for being connected with an impeller of an industrial fan; and a reduction gearbox, the reduction gearbox is provided with a box body, a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged at opposite ends of the box body, the first connecting part is used for being connected with a body of the motor, the second connecting part is used for being connected with a casing of the industrial fan, the box body, the first connecting part and the second connecting part form a cavity, and the cavity accommodates the gear mechanism, wherein the box body, the first connecting part and the second connecting part are all structures made of aluminum material.

2. The speed reducer for an industrial fan according to claim 1, characterized by, The box body, the first connecting part and the second connecting part are integrally arranged together.

3. The speed reducer for an industrial fan according to claim 1, characterized by A first gear sleeve of the gear mechanism is arranged on the first output shaft of the motor, and the first gear can rotate with the first output shaft of the motor.

4. The speed reducer for an industrial fan according to claim 3, characterized by The gear mechanism further comprises: an input shaft, the input shaft is rotatably arranged in the cavity; a second gear, the second gear is sleeved on an input end of the input shaft, the second gear is engaged with the first gear, and the second gear can rotate with the first gear; a third gear, the third gear is arranged on an output end of the input shaft, and the third gear can rotate with the input shaft; a second output shaft, the second output shaft is rotatably arranged in the cavity, and an output end of the second output shaft is used for being connected with the impeller of the industrial fan; a fourth gear, the fourth gear is sleeved on an input end of the second output shaft, the fourth gear is engaged with the third gear, and the fourth gear can rotate with the third gear.

5. The speed reducer for an industrial fan according to claim 4, characterized by The third gear and the input shaft are integrally arranged together.

6. The speed reducer for an industrial fan according to claim 4, characterized by The tooth surfaces of the first gear, the second gear, the third gear and the fourth gear are all provided with lightening holes.

7. The speed reducer for an industrial fan according to claim 4, characterized by The first gear, the second gear, the third gear and the fourth gear are all 6-grade precision gears.

8. The speed reducer for an industrial fan according to claim 4, characterized by The speed reducer for the industrial fan further comprises: a first bearing, the first bearing is arranged in the cavity, an inner ring of the first bearing is sleeved on the input end of the input shaft, and the inner ring of the first bearing can rotate with the input shaft; a second bearing, the second bearing is arranged in the cavity, an inner ring of the second bearing is sleeved on the output end of the input shaft, and the inner ring of the second bearing can rotate with the input shaft; a third bearing, the third bearing is arranged in the cavity, the third bearing is located between the first bearing and the second bearing, an inner ring of the third bearing is sleeved on the input shaft, and the inner ring of the third bearing can rotate with the input shaft.

9. The speed reducer for an industrial fan according to claim 4, characterized by The speed reducer for the industrial fan further comprises: a fourth bearing, the fourth bearing is arranged in the cavity, an inner ring of the fourth bearing is sleeved on the input end of the second output shaft, and the inner ring of the fourth bearing can rotate with the second output shaft; A fifth bearing is arranged in the cavity, an inner ring of the fifth bearing is sleeved on an output end of the second output shaft, the inner ring of the fifth bearing can rotate with the second output shaft, and the fifth bearing is a double-row tapered roller bearing.

10. A power plant characterised by A speed reducer for an industrial fan comprising any one of claims 1-9.

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