Reduction gear of alternating current motor

Abstract

The utility model discloses a speed reducer of an alternating current motor, which relates to the technical field of motors and comprises a cover plate. An input shaft is connected to the mounted bearing of the cover plate in a matched mode, an insertion shaft is connected to one end of the input shaft in an inserted mode, a small grinding wheel is connected to the outer side of the insertion shaft in a matched mode, and then a large grinding wheel is attached to the small grinding wheel. The large grinding wheel is fixed on a supporting rod through a bolt; the supporting rod is matched and connected with a mounted bearing mounted on the cover plate; the other end of the input shaft is connected with a first gear in a matched mode. According to the utility model, the inserting shaft is inserted into the input shaft, when the inserting shaft rotates, the small grinding wheel on the outer side rubs with the large grinding wheel, and the small grinding wheel drives the large grinding wheel and the supporting rod to rotate, so that the rotating force for moving the inserting shaft can be removed, and a plurality of gears on the inner side are matched for speed reduction, thereby controlling the speed reduction of the output shaft.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of motors, and more specifically, to a speed reduction device for an AC motor. Background Art

[0002] "AC motor": A machine used to convert mechanical energy and AC electrical energy into each other. Due to the huge development of the AC power system, AC motors have become the most commonly used motors. Compared with DC motors, AC motors do not have a commutator (see commutation of DC motors), so they have a simple structure, are easy to manufacture, are relatively firm, and are easy to make into high-speed, high-voltage, high-current, and large-capacity motors. The power coverage of AC motors is very large, ranging from a few watts to several hundred thousand kilowatts, or even over a million kilowatts.

[0003] The rotational speed output of traditional motors is a standard fixed value. To change its output rotational speed, it is usually used in conjunction with a speed reducer to reduce the output rotational speed. However, it is more inconvenient to use only an AC motor for speed reduction. For this reason, we provide a speed reduction device for an AC motor. By sleeving a small grinding wheel on the outside of the plug shaft and cooperating with a large grinding wheel for friction, the rotational force of the movement can be removed. In cooperation with multiple gears on the inside, the rotational speed of the output shaft can be effectively controlled, thus effectively making up for the above problems. Summary of the Utility Model

[0004] The purpose of the present utility model is to provide a speed reduction device for an AC motor to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions:

[0006] A speed reduction device for an AC motor includes a cover plate; a bearing with a seat on the cover plate is connected with an input shaft in a matching manner. One end of the input shaft is inserted with a plug shaft, and a small grinding wheel is connected with the outside of the plug shaft in a matching manner. Secondly, the small grinding wheel is attached to a large grinding wheel; the large grinding wheel is fixed on a support rod by bolts, and the support rod is connected with a bearing with a seat installed on the cover plate in a matching manner; the other end of the input shaft is connected with a first gear in a matching manner.

[0007] As a further technical solution of the present utility model, the first gear is meshed with a second gear, the second gear is also meshed with a third gear, and the third gear is meshed with a small gear.

[0008] As a further technical solution of the present utility model, there are two small gears. One of them is welded to the third gear in a matching manner, and the other is welded to the fourth gear. The small gear on the third gear is meshed with the third gear, and the small gear on the fourth gear is meshed with the third gear.

[0009] As a further technical solution of the present utility model, the fourth gear is meshed and connected to the output gear ring, the output gear ring is cooperatively connected to the outside of the output shaft, and the output shaft is cooperatively connected to the pedestal bearing installed on the housing.

[0010] As a further technical solution of the present utility model, the second gear, the third gear, the third gear and the fourth gear are cooperatively connected to the pedestal bearing installed on the inner fixing frame, and the inner fixing frame is snap-connected to the inside of the housing.

[0011] As a further technical solution of the present utility model, the housing is provided with a bayonet for facilitating the snap connection of the cover plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, the insertion shaft is inserted into the input shaft. When the insertion shaft rotates, the small grinding wheel and the large grinding wheel on the outside rub against each other. The small grinding wheel will drive the large grinding wheel and the support rod to rotate, so as to be able to remove the rotational force of the movement of the insertion shaft, and cooperate with the multiple gears on the inside to reduce the speed, thereby controlling the speed reduction of the output shaft;

[0014] In the present utility model, the gear with a smaller diameter drives the gear with a larger diameter to rotate, which can reduce the speed, thereby achieving a speed reduction effect;

[0015] In the present utility model, the inner fixing frame plays a bearing role, and the cover plate can play a role in closing the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0017] Figure 2 is Figure 1 another perspective schematic diagram of the present utility model.

[0018] Figure 3 is Figure 1 the internal structural schematic diagram of the present utility model.

[0019] Figure 4 is Figure 3 the partial structural schematic diagram of the present utility model.

[0020] Figure 5 is Figure 4 the left view of the present utility model.

[0021] In the figure: 1 - housing, 2 - inner fixing frame, 3 - cover plate, 4 - input shaft, 5 - insertion shaft, 6 - small grinding wheel, 7 - large grinding wheel, 8 - support rod, 9 - first gear, 10 - second gear, 11 - third gear, 12 - small gear, 13 - third gear, 14 - fourth gear, 15 - output gear ring, 16 - output shaft. Detailed implementation manners

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 , in the embodiment of the present utility model, a speed reduction device for an AC motor includes a cover plate 3; a input shaft 4 is connected in a mating manner to the pedestal bearing of the cover plate 3, one end of the input shaft 4 is inserted with an insertion shaft 5, and a small grinding wheel 6 is connected in a mating manner to the outer side of the insertion shaft 5. Secondly, a large grinding wheel 7 is attached to the small grinding wheel 6; the large grinding wheel 7 is fixed to a support rod 8 by bolts, and the support rod 8 is connected in a mating manner to the pedestal bearing installed on the cover plate 3; the other end of the input shaft 4 is connected in a mating manner to a first gear 9.

[0024] By adopting the above technical solution, the insertion shaft 5 is inserted into the input shaft 4. When the insertion shaft 5 rotates, the outer small grinding wheel 6 and the large grinding wheel 7 rub against each other. The small grinding wheel 6 will drive the large grinding wheel 7 and the support rod 8 to rotate, so as to be able to remove the rotational force of the movement of the insertion shaft 5 and cooperate with the multiple gears inside to decelerate, thereby controlling the deceleration of the output shaft 16.

[0025] In this embodiment, the first gear 9 is meshed with a second gear 10, the second gear 10 is also meshed with a third gear 11, and the third gear 11 is meshed with a small gear 12.

[0026] Further, there are two small gears 12. One of them is welded to a third gear 13 in a mating manner, and the other is welded to a fourth gear 14. The small gear 12 on the third gear 13 is meshed with the third gear 11, and the small gear 12 on the fourth gear 14 is meshed with the third gear 13.

[0027] Further, the fourth gear 14 is meshed with an output gear ring 15, the output gear ring 15 is connected in a mating manner to the outer side of the output shaft 16, and the output shaft 16 is connected in a mating manner to the pedestal bearing installed on the housing 1.

[0028] By adopting the above technical solution, the input shaft 4 drives the first gear 9 to rotate. The first gear 9 drives the second gear 10 to rotate, so that the second gear 10 drives the engaged third gear 11 to rotate. The third gear 11 drives the pinion 12 on the third gear 13 to rotate, so that the third gear 13 rotates, and successively drives the pinion 12 on the engaged fourth gear 14 to rotate. The fourth gear 14 rotates following the pinion 12 and drives the output gear ring 15 to rotate. The gear with a smaller diameter drives the gear with a larger diameter to rotate, which can reduce the rotational speed and thus achieve a speed reduction effect.

[0029] In this embodiment, the second gear 10, the third gear 11, the third gear 13 and the fourth gear 14 are connected in cooperation with the pedestal bearings installed on the inner fixing frame 2, and the inner fixing frame 2 is clamped inside the outer shell 1.

[0030] Furthermore, the outer shell 1 is provided with a bayonet for facilitating the snap connection of the cover plate 3.

[0031] By adopting the above technical solution, the inner fixing frame 2 plays a bearing role, and the cover plate 3 can play a role in closing the outer shell 1.

[0032] The working principle of the present utility model is as follows: During use, the insertion shaft 5 is inserted into the input shaft 4. When the insertion shaft 5 rotates, the outer small grinding wheel 6 and the large grinding wheel 7 rub against each other. The small grinding wheel 6 drives the large grinding wheel 7 and the support rod 8 to rotate, so that the rotational force of the movement of the insertion shaft 5 can be removed, and it cooperates with the multiple gears inside to reduce the speed, thereby controlling the deceleration of the output shaft 16; the input shaft 4 drives the first gear 9 to rotate. The first gear 9 drives the second gear 10 to rotate, so that the second gear 10 drives the engaged third gear 11 to rotate. The third gear 11 drives the pinion 12 on the third gear 13 to rotate, so that the third gear 13 rotates, and successively drives the pinion 12 on the engaged fourth gear 14 to rotate. The fourth gear 14 rotates following the pinion 12 and drives the output gear ring 15 to rotate. The gear with a smaller diameter drives the gear with a larger diameter to rotate, which can reduce the rotational speed and thus achieve a speed reduction effect; the inner fixing frame 2 plays a bearing role, and the cover plate 3 can play a role in closing the outer shell 1.

[0033] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0034] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A speed reduction device for an AC motor, characterized in that: It includes a cover plate (3); a plummer block bearing of the cover plate (3) is fitted and connected with an input shaft (4), one end of the input shaft (4) is inserted with a plug shaft (5), and a small grinding wheel (6) is fitted and connected to the outside of the plug shaft (5). Secondly, a large grinding wheel (7) is attached to the small grinding wheel (6); the large grinding wheel (7) is fixed on a support rod (8) by bolts, and the support rod (8) is fitted and connected with a plummer block bearing installed on the cover plate (3); the other end of the input shaft (4) is fitted and connected with a first gear (9).

2. The reduction device of an AC motor according to claim 1, wherein: The first gear (9) is meshed and connected with a second gear (10), the second gear (10) is also meshed and connected with a third gear (11), and the third gear (11) is meshed and connected with a small gear (12).

3. The deceleration device for an AC motor according to claim 2, characterized in that: There are two small gears (12), one of which is welded to a third gear (13) by fitting, and the other is welded to a fourth gear (14). The small gear (12) on the third gear (13) is meshed and connected with the third gear (11), and the small gear (12) on the fourth gear (14) is meshed and connected with the third gear (13).

4. A speed reduction device for an AC motor according to claim 3, characterized in that: The fourth gear (14) is meshed and connected with an output tooth ring (15), the output tooth ring (15) is fitted and connected to the outside of an output shaft (16), and the output shaft (16) is fitted and connected with a plummer block bearing installed on the housing (1).

5. A speed reduction device for an AC motor according to claim 4, characterized in that: The second gear (10), the third gear (11), the third gear (13) and the fourth gear (14) are fitted and connected with plummer block bearings installed on an inner fixing frame (2), and the inner fixing frame (2) is clamped inside the housing (1).

6. The deceleration device of an AC motor according to claim 5, characterized in that: A bayonet for facilitating the snap connection of the cover plate (3) is provided on the housing (1).

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