CN212004115U

CN212004115U - Motor direct-drive planetary reducer

Info

Publication number: CN212004115U
Application number: CN202020132000.8U
Authority: CN
Inventors: 张�杰; 杨燃; 陈雄风; 张瀚; 袁鑫钢
Original assignee: Zhejiang Laifual Harmonic Drive Co ltd
Current assignee: Zhejiang Laifual Harmonic Drive Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-11-24
Anticipated expiration: 2030-01-10

Abstract

The utility model relates to a motor directly drives formula planetary reducer belongs to planetary reducer technical field. The planetary carrier is rotatably supported on the fixed gear ring, the planetary gears are uniformly fixed on the planetary carrier, the motor is directly and fixedly connected to one end of the fixed gear ring, a sun gear part is directly arranged on a motor shaft of the motor, and the planetary gear is meshed with both the sun gear part and the fixed gear ring. A shell and a connecting flange in the prior art are abandoned, the motor is directly and fixedly connected to one end of the fixed gear ring, and the axial size is greatly shortened; the connecting shaft and the sun gear are fixed on the connecting shaft in a split mode in the prior art, the sun tooth part is directly arranged on the motor shaft and directly meshed with the driving planetary gear, the structure is simple, the transmission is compact, the transmission route is effectively shortened, the power loss is small, the transmission precision and the transmission efficiency are greatly improved, and therefore the speed reduction transmission stability is correspondingly improved.

Description

Motor direct-drive planetary reducer

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of planetary reducer, specifically relate to a motor directly drives formula planetary reducer.

[ background of the invention ]

Referring to fig. 4, 5 and 6, the conventional planetary reducer includes a motor M ', a connecting flange 6', a connecting shaft X ', a housing 7', a sun gear 2 ', a planetary gear 3', an inner gear ring 4 'and a planet carrier 5'. The specific connection relationship is as follows:

the motor is fixedly arranged on the connecting flange, a motor shaft 1 'penetrates through the connecting shaft and then is fixedly connected together, the connecting flange is fixedly connected with the shell, the connecting shaft is supported on the shell through a large bearing F', and the inner end of the connecting shaft is fixedly provided with the sun gear; a plurality of planet gears are uniformly arranged on the planet carrier, and the planet carrier is rotationally supported on the inner gear ring; the sun gear is meshed with a plurality of planet gears.

By carefully analyzing the structure, the following technical defects of the existing planetary reducer can be easily found out:

1. the variety and the number of parts are various: because the motor shaft 1 'and the sun gear 2' are in a split configuration structure, and the connecting flange 6 'for fixing the power supply machine M, the connecting shaft X', the shell 7 ', the large bearing F' and other parts are needed, the traditional planetary reducer has long transmission path, low transmission precision and low transmission efficiency, and the defect of poor stability in actual operation is shown;

2. due to the complex structure and the multiple parts, the batch production cost of the planetary reducer is high, and the market competitiveness of the product is influenced.

[ summary of the invention ]

The utility model aims at providing a motor direct drive formula planetary reducer that the structure is succinct compact, transmission precision is high and low in manufacturing cost to it is not enough to overcome the technique that prior art exists.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a motor direct drive formula planetary reducer, includes motor, fixed ring gear, planet carrier and planetary gear, and the planet carrier rotationally supports on fixed ring gear, and planetary gear evenly fixes on the planet carrier, and its improvement point lies in: the motor is directly and fixedly connected to one end of the fixed gear ring, a sun tooth part is directly arranged on a motor shaft of the motor, and the planetary gear is meshed with the sun tooth part and the fixed gear ring.

To ensure the parallelism between the sun gear part (i.e. the motor shaft) and the shaft for mounting the planet gear, the motor is provided with a spigot through which the motor is mounted to the stationary ring gear.

The planet carrier is supported on the fixed gear ring through a bearing.

Compared with the prior art, the utility model has the advantages of as follows and beneficial effect:

the shell and the connecting flange in the prior art are abandoned, and the axial size of the utility model is greatly shortened because the motor is directly and fixedly connected with one end of the fixed gear ring; the planetary reducer has the advantages that the connecting shaft and the split fixing of the sun gear on the connecting shaft in the prior art are eliminated, the sun gear part is directly arranged on the motor shaft and directly meshed with the driving planetary gear, the structure is simple, the transmission is compact, the transmission route is effectively shortened, the power loss is small, the transmission precision and the transmission efficiency are greatly improved, the speed reduction stability is correspondingly improved, and the batch production cost of the planetary reducer is expected to be greatly reduced due to the fact that the number of parts is greatly reduced.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a motor direct drive type planetary reducer of the present invention;

fig. 2 is a partial schematic view of the motor of the present invention;

FIG. 3 is a schematic view of a planetary reducer of the present invention;

FIG. 4 is a schematic illustration of a prior art planetary reducer;

FIG. 5 is a schematic view of a connecting shaft for a prior planetary reduction gear;

fig. 6 is a schematic view of a conventional sun gear.

[ detailed description ] embodiments

The utility model provides a motor direct drive formula planetary reducer, includes motor M, fixed ring gear 4, planet carrier 5 and planetary gear 3, planet carrier 5 rotationally supports on fixed ring gear 4, and planetary gear 3 evenly fixes on planet carrier 5, and its improvement point lies in: the motor M is directly and fixedly connected to one end of the fixed gear ring 4, a sun tooth part 2 is directly arranged on a motor shaft 1 of the motor M, and the planetary gear 3 is meshed with the sun tooth part 2 and the fixed gear ring 4.

The inner wall of the fixed gear ring 4 is provided with a ring of gear teeth; the planet carrier 5 extends into the fixed gear ring 4, so that the planet gear 3 is positioned in the fixed gear ring 4; the motor shaft 1 extends into the planet carrier 5, so that the sun gear part 2 is directly meshed with the planet gear 3, and the structure is compact.

In the present embodiment, there are 3 planet gears, only 1 of which is visible in the figure.

As shown in figure 1, a screw hole S is formed in the right end face of the fixed gear ring 4, the motor M is screwed into the screw hole through a bolt and is fixedly connected with the fixed gear ring 4, and the motor can be quickly separated from the planetary reducer after the bolt is detached, so that the maintenance is convenient.

The motor M is provided with a spigot M0, and the motor M is mounted to the fixed ring gear 4 through a spigot M0.

The carrier 5 is supported on the fixed ring gear 4 by a bearing F1; the bearings F1 are disposed on both sides of the planetary gear.

After the motor shaft 1 is machined, the sun-tooth part 2 is directly machined on the motor shaft.

As can be seen, the motor shaft 1 extends out of the motor housing for a short time, and the sun-toothed portion 2 is lathed on the end of the motor shaft 1, so that there is no overhang state, and the rotation stability of the sun-toothed portion 2 is high.

The motor shaft 1 is used as a rotor shaft and a sun gear part, and has two purposes.

Claims

1. The utility model provides a motor direct drive formula planetary reducer, includes motor, fixed ring gear, planet carrier and planetary gear, and the planet carrier rotationally supports on fixed ring gear, and planetary gear fixes its characterized in that on the planet carrier uniformly: the motor is directly and fixedly connected to one end of the fixed gear ring, a sun tooth part is directly arranged on a motor shaft of the motor, and the planetary gear is meshed with the sun tooth part and the fixed gear ring.

2. The motor direct drive planetary reducer according to claim 1, characterized in that: the motor is provided with a spigot, and the motor is arranged on the fixed gear ring through the spigot.

3. The motor direct drive planetary reducer according to claim 1 or 2, characterized in that: the planet carrier is supported on the fixed ring gear through a bearing.