A variable frequency motor with a gear box

Abstract

A variable frequency motor with a gearbox comprises a variable frequency motor, a driving gearbox and a gearbox motor. The driving gearbox is fixedly mounted on the variable frequency motor, the gearbox motor is fixedly mounted on the driving gearbox, a gearbox fan and a connecting gear assembly are installed in the driving gearbox, the gearbox motor and the variable frequency motor are connected via the connecting gear assembly, the gearbox fan is fixedly connected to the connecting gear assembly, and the gearbox fan is driven to work by the driving gearbox, thereby ensuring the working stability of the gearbox fan, and the replacement efficiency of the driving gearbox is faster, thereby reducing the maintenance time of the equipment and ensuring the production efficiency of the enterprise.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a variable frequency motor with a gear box. Background Art

[0002] Many different types of variable frequency motors are disclosed in the prior art. However, most of these variable frequency motors are equipped with independent motors and motor fans. During use, the fan is often prone to get entangled with debris, causing damage to the motor. Once the motor is damaged, it is easy to cause damage to the entire variable frequency motor, resulting in the need to replace the entire variable frequency motor. Replacing the variable frequency motor requires a long maintenance time, which greatly reduces the company's production efficiency. Summary of the invention

[0003] In view of the above shortcomings, the technical problem to be solved by the present invention is to provide a variable frequency motor with a gear box, which drives the motor fan to rotate through the gear box, and facilitates the replacement of the entire gear box to improve maintenance efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A variable frequency motor with a gearbox comprises a variable frequency motor, a driving gearbox and a gearbox motor. The driving gearbox is fixedly mounted on the variable frequency motor, the gearbox motor is fixedly mounted on the driving gearbox, a gearbox fan and a connecting gear assembly are installed in the driving gearbox, the gearbox motor and the variable frequency motor are connected via the connecting gear assembly, and the gearbox fan is fixedly connected to the connecting gear assembly.

[0006] Furthermore, the connecting gear assembly includes a first motor shaft, a second motor shaft and a transmission gear set. The first motor shaft and the second motor shaft are respectively fixedly mounted on the driving gear box and are coaxially arranged. The first motor shaft is detachably connected to the gear box motor, the second motor shaft is detachably connected to the variable frequency motor, and the gear box fan is fixedly mounted on the first motor shaft.

[0007] Furthermore, the transmission gear set includes a transmission shaft, a first transmission gear pair and a second transmission gear pair. The transmission shaft is rotatably mounted on the driving gear box. The first transmission gear pair is respectively connected to the transmission shaft and the first motor shaft, and the second transmission gear pair is respectively connected to the transmission shaft and the second motor shaft.

[0008] Furthermore, the gear box fan is installed between the first transmission gear pair and the second transmission gear pair.

[0009] Furthermore, the driving gearbox includes a transmission housing, a motor mounting flange and a motor connecting housing, the motor connecting housing is fixedly connected to the variable frequency motor, the transmission housing is fixedly connected to the motor connecting housing, and the motor mounting flange is fixedly connected to the transmission housing.

[0010] Furthermore, the motor connecting box body is fixedly connected with a connecting box front flange, a connecting box rear flange plate and a connecting box sleeve. The connecting box front flange is fixedly connected to the front end of the connecting box sleeve, the connecting box rear flange plate is fixedly connected to the end face of the connecting box sleeve, and the second motor shaft is rotatably mounted on the connecting box rear flange plate.

[0011] Furthermore, the transmission box body includes a transmission box sleeve and a transmission mounting plate. The transmission mounting plate is fixedly connected in the transmission box sleeve. The first motor shaft is rotatably mounted on the transmission mounting plate. Both ends of the transmission box sleeve are respectively fixedly connected with transmission flanges. The transmission shaft is respectively rotatably connected to the transmission mounting plate and the rear flange plate of the connection box.

[0012] Furthermore, the motor mounting flange is adapted to the transmission flange, a coupling cavity is formed between the transmission mounting plate and the motor mounting flange, a coupling is fixedly mounted on the first motor shaft, and the gearbox motor is connected to the coupling.

[0013] Furthermore, a ventilation sleeve is sleeved on the outer side of the transmission case sleeve, a filter layer is filled between the ventilation sleeve and the transmission case sleeve, ventilation holes are formed on the side wall of the ventilation sleeve, and air inlet holes are formed on the side wall of the transmission case sleeve. The ventilation holes and the air inlet holes are respectively located on both sides of the filter layer.

[0014] Furthermore, the coupling includes a male coupling and a female coupling. The end of the male coupling is semi-spherical, and a cross groove is formed in the middle of the semi-sphere. Correspondingly, a plug-in groove is formed in the female coupling, and a cross connector is fixedly connected in the plug-in groove, and the cross connector is adapted to the cross groove.

[0015] The beneficial effects of the present invention are that the gear box fan is driven by the driving gear box to ensure the working stability of the gear box fan, and the replacement efficiency of the driving gear box is faster, which reduces the maintenance time of the equipment and ensures the production efficiency of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a half-section schematic diagram of the drive gearbox.

[0018] Figure 3 It is a schematic diagram of the connector structure.

[0019] Figure 4 It is a structural diagram of the male end of the coupling.

[0020] Figure numerals: variable frequency motor 1, driving gear box 2, gear box motor 3, gear box fan 4, first motor shaft 5, second motor shaft 6, transmission shaft 7, first transmission gear pair 8, second transmission gear pair 9, transmission box body 10, motor mounting flange 11, motor connecting box body 12, connecting box front flange 13, connecting box rear flange plate 14, connecting box sleeve 15, transmission box sleeve 16, transmission mounting plate 17, transmission flange 18, coupling cavity 19, coupling 20, ventilation sleeve 21, filter layer 22, ventilation hole 23, air inlet hole 24, coupling male head 25, coupling female head 26, cross slot 27, plug slot 28, cross connector 29, mounting platform 30. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] A variable frequency motor with a gearbox comprises a variable frequency motor 1, a driving gearbox 2 and a gearbox motor 3. The driving gearbox 2 is fixedly mounted on the variable frequency motor 1, the gearbox motor 3 is fixedly mounted on the driving gearbox 2, a gearbox fan 4 and a connecting gear assembly are installed in the driving gearbox 2, the gearbox motor 3 and the variable frequency motor 1 are connected via the connecting gear assembly, the gearbox fan 4 is fixedly connected to the connecting gear assembly, the gearbox fan 4 is driven to work by the driving gearbox 2, the working stability of the gearbox fan 4 is ensured, the replacement efficiency of the driving gearbox 2 is faster, the maintenance time of the equipment is reduced, and the production efficiency of the enterprise is ensured.

[0023] The connecting gear assembly includes a first motor shaft 5, a second motor shaft 6 and a transmission gear set. The first motor shaft 5 and the second motor shaft 6 are respectively fixedly mounted on the driving gear box 2 and are coaxially arranged to facilitate the coaxial rotation of the gear box fan 4 and the motor shaft of the variable frequency motor. The first motor shaft 5 is detachably connected to the gear box motor 3, and the second motor shaft 6 is detachably connected to the variable frequency motor 1. The gear box fan 4 is fixedly mounted on the first motor shaft 5. The first motor shaft 5 and the second motor shaft 6 are transmission-connected through the transmission gear set to facilitate maintaining the rotation speed of the variable frequency motor 1 when the variable frequency motor 1 changes frequency.

[0024] The transmission gear group includes a transmission shaft 7, a first transmission gear pair 8 and a second transmission gear pair 9. The transmission shaft 7 is rotatably mounted on the driving gear box 2. The first transmission gear pair 8 is respectively connected to the transmission shaft 7 and the first motor shaft 5. The second transmission gear pair 9 is respectively connected to the transmission shaft 7 and the second motor shaft 6. The gear box fan 4 is installed between the first transmission gear pair 8 and the second transmission gear pair 9.

[0025] The driving gearbox 2 includes a transmission housing 10, a motor mounting flange 11 and a motor connecting housing 12. The motor connecting housing 12 is fixedly connected to the variable frequency motor 1. The transmission housing 10 is fixedly connected to the motor connecting housing 12. The motor mounting flange 11 is fixedly connected to the transmission housing 10. The three-stage setting of the driving gearbox 2 facilitates the installation of various components in the driving gearbox 2, thereby improving assembly efficiency.

[0026] The motor connecting box body 12 is fixedly connected with a connecting box front flange 13, a connecting box rear flange plate 14 and a connecting box sleeve 15. The connecting box front flange 13 is fixedly connected to the front end of the connecting box sleeve 15, and the connecting box rear flange plate 14 is fixedly connected to the end surface of the connecting box sleeve 15. The second motor shaft 6 is rotatably mounted on the connecting box rear flange plate 14, which is convenient for rotatably mounting the second motor shaft 6 and facilitating the connection of the second motor shaft 6 with the motor shaft of the variable frequency motor 1.

[0027] The transmission box body 10 includes a transmission box sleeve 16 and a transmission mounting plate 17. The transmission mounting plate 17 is fixedly connected to the inside of the transmission box sleeve 16 to form a coupling cavity 19 with the motor mounting flange 11. The first motor shaft 5 is rotatably mounted on the transmission mounting plate 17. Both ends of the transmission box sleeve 16 are respectively fixedly connected with transmission flanges 18. The transmission shaft 7 is respectively rotatably connected to the transmission mounting plate 17 and the rear flange plate 14 of the connection box to facilitate the installation of the transmission gear set.

[0028] The motor mounting flange 11 is adapted to the transmission flange 18, a coupling cavity 19 is formed between the transmission mounting plate 17 and the motor mounting flange 11, a coupling 20 is fixedly mounted on the first motor shaft 5, the gearbox motor 3 is connected to the coupling 20, a mounting platform 30 is formed on the motor mounting flange 11, and the gearbox motor 3 is fixedly mounted on the mounting platform 30, which is convenient for installing the gearbox motor 3.

[0029] A ventilation sleeve 21 is sleeved on the outer side of the transmission box sleeve 16, and a filter layer 22 is filled between the ventilation sleeve 21 and the transmission box sleeve 16. Ventilation holes 23 are formed on the side wall of the ventilation sleeve 21, and air inlet holes 24 are formed on the side wall of the transmission box sleeve 16. The ventilation holes 23 and the air inlet holes 24 are respectively located on both sides of the filter layer 22. Through the setting of the filter layer 22, it is convenient to filter the air entering the transmission box sleeve 16, prevent the gear box motor 3 from getting stuck, and ensure the service life of the gear box motor 3.

[0030] The coupling 20 includes a coupling male head 25 and a coupling female head 26. The end of the coupling male head 25 is semi-spherical, and a cross groove 27 is formed in the middle of the semi-spherical shape. Correspondingly, a plug-in groove 28 is formed in the coupling female head 26, and a cross connector 29 is fixedly connected in the plug-in groove 28. The cross connector 29 is adapted to the cross groove 27. The coupling 20 is connected to the connection between the variable frequency motor 1 and the second motor shaft 6 and the connection between the gear box motor 3 and the first motor shaft 5, which facilitates the disassembly and assembly of the variable frequency motor 1, the gear box motor 3 and the driving gear box 2, thereby improving the disassembly and assembly efficiency.

[0031] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0032] Although this article uses more terms corresponding to the figure marks in the figures, it does not exclude the possibility of using other terms; these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A variable frequency motor with a gear box, characterized in that: The invention comprises a variable frequency motor (1), a driving gear box (2) and a gear box motor (3), wherein the driving gear box (2) is fixedly mounted on the variable frequency motor (1), the gear box motor (3) is fixedly mounted on the driving gear box (2), a gear box fan (4) and a connecting gear assembly are installed in the driving gear box (2), the gear box motor (3) and the variable frequency motor (1) are connected via the connecting gear assembly, and the gear box fan (4) is fixedly connected to the connecting gear assembly; the connecting gear assembly comprises a first motor shaft (5), a second motor shaft (6) and a transmission gear set, the first motor shaft (5) and the second motor shaft (6) are respectively fixedly mounted on the driving gear box (2) and are coaxially arranged, the first motor shaft (5) is detachably connected to the gear box motor (3), the second motor shaft (6) is detachably connected to the variable frequency motor (1), and the gear box fan (4) is fixedly mounted. On the first motor shaft (5); the transmission gear set comprises a transmission shaft (7), a first transmission gear pair (8) and a second transmission gear pair (9); the transmission shaft (7) is rotatably mounted on the driving gear box (2); the first transmission gear pair (8) is respectively connected to the transmission shaft (7) and the first motor shaft (5); the second transmission gear pair (9) is respectively connected to the transmission shaft (7) and the second motor shaft (6); the gear box fan (4) is mounted between the first transmission gear pair (8) and the second transmission gear pair (9); the driving gear box (2) comprises a transmission box body (10), a motor mounting flange (11) and a motor connection box body (12); the motor connection box body (12) is fixedly connected to the variable frequency motor (1); the transmission box body (10) is fixedly connected to the motor connection box body (12); and the motor mounting flange (11) is fixedly connected to the transmission box body (10).

2. A variable frequency motor with a gear box according to claim 1, characterized in that: A connection box front flange (13), a connection box rear flange plate (14) and a connection box sleeve (15) are fixedly connected to the motor connection box body (12); the connection box front flange (13) is fixedly connected to the front end of the connection box sleeve (15); the connection box rear flange plate (14) is fixedly connected to the end surface of the connection box sleeve (15); and the second motor shaft (6) is rotatably mounted on the connection box rear flange plate (14).

3. A variable frequency motor with a gear box according to claim 2, characterized in that: The transmission box body (10) comprises a transmission box sleeve (16) and a transmission mounting plate (17). The transmission mounting plate (17) is fixedly connected in the transmission box sleeve (16). The first motor shaft (5) is rotatably mounted on the transmission mounting plate (17). Both ends of the transmission box sleeve (16) are respectively fixedly connected with transmission flanges (18). The transmission shaft (7) is respectively rotatably connected to the transmission mounting plate (17) and the connection box rear flange plate (14).

4. A variable frequency motor with a gear box according to claim 3, characterized in that: The motor mounting flange (11) is adapted to the transmission flange (18); a coupling cavity (19) is formed between the transmission mounting plate (17) and the motor mounting flange (11); a coupling (20) is fixedly mounted on the first motor shaft (5); and the gearbox motor (3) is connected to the coupling (20).

5. The variable frequency motor with a gear box according to claim 3, characterized in that: A ventilation sleeve (21) is sleeved on the outer side of the transmission case sleeve (16); a filter layer (22) is filled between the ventilation sleeve (21) and the transmission case sleeve (16); a ventilation hole (23) is formed on the side wall of the ventilation sleeve (21); an air inlet hole (24) is formed on the side wall of the transmission case sleeve (16); the ventilation hole (23) and the air inlet hole (24) are respectively located on both sides of the filter layer (22).

6. A variable frequency motor with a gear box according to claim 4, characterized in that: The coupling (20) comprises a coupling male head (25) and a coupling female head (26). The end of the coupling male head (25) is semi-spherical, and a cross groove (27) is formed in the middle of the semi-spherical shape. Correspondingly, a plug groove (28) is formed in the coupling female head (26), and a cross connector (29) is fixedly connected in the plug groove (28). The cross connector (29) is adapted to the cross groove (27).

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