CN216200190U - Multistage cylindrical gear speed reducer - Google Patents

Abstract

The utility model discloses a multi-stage cylindrical gear speed reducer which comprises a shell, wherein an input shaft, a first transmission shaft, a second transmission shaft and an output shaft are sequentially arranged in the shell, and a transmission gear set matched with the input shaft, the first transmission shaft, the second transmission shaft and the output shaft is arranged between every two transmission gears. The utility model has the advantages that the structure compactness of the speed reducer can be improved; the universality of the speed reducer is improved, and the application range of the speed reducer is expanded.

Description

Multistage cylindrical gear speed reducer

Technical Field

The application relates to the technical field of gear speed reducers, in particular to a multistage cylindrical gear speed reducer.

Background

The gear reducer is generally used for low-rotating-speed and high-torque transmission equipment, and the common reducer of the motor also has several pairs of gears with the same principle to achieve an ideal speed reduction effect, wherein the ratio of the number of the teeth of the large gear to the number of the teeth of the small gear is the transmission ratio. With the continuous development of the speed reducer industry, more and more enterprises apply the speed reducer, and the stability of the gear speed reducer is always pursued in the industry.

In the chinese patent literature, the utility model discloses a patent of 24 days of 8 months in 2021 that the publication number is CN 214036821U, this application discloses a multistage cylindrical gear speed reducer, which comprises a fixed base, casing and decelerator and heat dissipation adjusting device, decelerator includes the casing, including a motor, an end cap, a controller, and a cover plate, first transmission shaft, first gear, second transmission shaft, the second gear, the third gear, the fourth gear, the third transmission shaft, fifth gear and fixed axle, the one end lateral wall fixed connection casing of fixing base, the motor is installed to the one end lateral wall of fixing base, the output of motor has cup jointed first transmission shaft, first gear has been cup jointed in the outside of first transmission shaft. The multi-stage cylindrical gear speed reducer in the prior art has the disadvantages that the structure is loose and not compact enough, the radial size of the transmission shaft which needs to be designed is thick in order to match the length requirement of the transmission shaft, the use is influenced, and the production cost is increased; on the other hand, the length and the radial dimension of the output shaft are determined, and the output shaft can only be adapted to the transmission occasion with a single specification, so that the universality is poor.

Disclosure of Invention

Based on the defects in the prior art, the utility model provides a multistage cylindrical gear speed reducer which can improve the structural compactness of the speed reducer.

The utility model also aims to improve the universality of the speed reducer and expand the application range of the speed reducer.

In order to achieve the above object, the present application adopts the following technical solutions.

The utility model provides a multistage roller gear speed reducer, which comprises a housin, be equipped with the input shaft in the casing in proper order, first transmission shaft, secondary drive axle and output shaft, the input shaft, first transmission shaft, secondary drive axle and output shaft all are equipped with the complex drive gear group between two liang, characterized by, the size of input shaft, first transmission shaft, secondary drive axle and output shaft increases in proper order, be equipped with mounting groove on the casing, mounting groove is equipped with the primary shaft bearing who corresponds first transmission shaft towards the inside one end of casing, mounting groove's wall is the circular conical surface.

This application is through the mounting groove of indent setting for first bearing frame sets up in can the invagination casing, thereby shortens the axial length of first transmission shaft, and two epaxial gears of first transmission are also can design less, and then the flexible coefficient of first transmission shaft reduces, is difficult to the bending, thereby can also set up the diameter of first transmission shaft less, is favorable to realizing the compactedness of speed reducer structure.

Preferably, a mounting hole which is communicated along the axis of the output shaft is formed in the output shaft, a limiting groove which is arranged in an inwards concave mode is formed in the mounting hole, a limiting clamping ring is arranged in the limiting groove, a limiting gasket is arranged on one side of the limiting clamping ring, an extension shaft is arranged in the mounting hole, the extension shaft and the limiting gasket are respectively located on two sides of the limiting clamping ring, and the extension shaft and the limiting gasket are connected through bolts. The lengthened shaft can be replaced by the output shaft through the arrangement of the mounting hole, the length of the output shaft and the diameter of the outer end of the output shaft can be adjusted to adapt to different output occasions, and the application range of the speed reducer is expanded.

Preferably, the mounting hole is internally provided with a long key groove, and the lengthened shaft is provided with a flat key matched with the long key groove. So that the extension shaft of the output shaft has better rotation synchronism.

Preferably, a motor is fixedly arranged on one side of the shell, a motor shaft of the motor extends into the shell, and the motor shaft of the motor is used as an input shaft. The motor shaft directly is as the input shaft, can unsettled setting, need not to install the bearing, does not also have the high-speed problem that rotates the easy axial float that appears of traditional speed reducer input shaft, and transmission stability is higher.

Preferably, the shell is detachably provided with a connecting flange matched with the outer end of the output shaft, and the connecting flange is provided with a recessed cavity. The connecting flange also can change the not unidimensional cavity, can protect the output environment of output shaft through the cavity, especially when corresponding the output shaft and being the hollow shaft, through the connecting flange protection extension shaft, improve output stability.

The utility model has the following beneficial effects: the structure compactness of the speed reducer can be improved; the universality of the speed reducer is improved, and the application range of the speed reducer is expanded.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is an external structural view of the present invention.

Fig. 3 is a schematic structural diagram of another embodiment of the present invention.

In the figure: an input shaft 2 of a shell 1, a first transmission shaft 3, a second transmission shaft 4, an output shaft 5, a motor 6, a flange cover 7, a transmission gear set 8, a mounting groove 9, a first bearing seat 10, a flange 11, a mounting hole 13, a mounting hole 12, a limiting groove 14, a limiting snap ring 15, a limiting gasket 16, a connecting bolt 17 and a long key groove 18.

Detailed Description

The utility model is further illustrated with reference to the figures and the specific embodiments.

In the case of the example 1, the following examples are given,

as shown in fig. 1 to 2, a multi-stage cylindrical gear reducer comprises a housing 1, wherein an input shaft 2, a first transmission shaft 3, a second transmission shaft 4 and an output shaft 5 are sequentially arranged in the housing 1, and a bearing is arranged on the housing 1 and is used for rotationally matching the input shaft 2, the first transmission shaft 3, the second transmission shaft 4 and the output shaft 5. A motor 6 is fixedly arranged on one side of the shell 1, a motor 6 shaft of the motor 6 extends into the shell 1, and the motor 6 shaft of the motor 6 is used as the input shaft 2. And a flange cover 7 is arranged on the shell 1, the flange cover 7 is in screw connection with the shell 1, and the flange cover 7 and the motor 6 are fixed through screws. The input shaft 2, the first transmission shaft 3, the second transmission shaft 4 and the output shaft 5 are provided with matched transmission gear sets 8 between each two, the upper-level shaft corresponding to the transmission gear set 8 is a pinion, the lower-level shaft corresponding to the transmission gear set 8 is a bull gear, and namely the three transmission gear sets 8 are all speed reduction gear sets. The dimensions of the input shaft 2, the first drive shaft 3, the second drive shaft 4 and the output shaft 5 increase in sequence, including the length dimension and the radial dimension. The housing 1 is provided with a mounting groove 9, one end of the mounting groove 9 facing the inside of the housing 1 is provided with a first bearing seat 10 corresponding to the first transmission shaft 3, and the inner wall surface and the outer wall surface of the mounting groove 9 are conical surfaces, strictly speaking, the conical surfaces are truncated cone-shaped with vertex angles removed. A connecting flange 11 matched with the outer end of the output shaft 5 is detachably arranged on the shell 1 through screws, and a recessed cavity 12 is arranged on the connecting flange 11. The output section of the output shaft 5 is provided with a key groove for arranging a key to be connected with an external mechanism in a radial synchronous mode, and the outer end of the concave cavity 12 corresponds to the rear side of the key groove of the output section of the output shaft 5.

This application is through the mounting groove 9 that the indent set up for first bearing frame 10 can be set up in the sunken casing 1, thereby shorten first transmission shaft 3's axial length, and two gears on first transmission shaft 3 also can design less, and then first transmission shaft 3's flexible coefficient reduces, is difficult to the bending, thereby can also set up the diameter of first transmission shaft 3 less, is favorable to realizing the compactness of speed reducer structure.

In the case of the example 2, the following examples are given,

a multi-stage cylindrical gear speed reducer, embodiment 2 and embodiment 1 are different in that, as shown in fig. 3, a mounting hole 13 penetrating along the axis of an output shaft 5 is arranged in the output shaft 5, a limiting groove 14 arranged in an inwards concave manner is arranged on the mounting hole 13, a limiting snap ring 15 is arranged in the limiting groove 14, a limiting gasket 16 is arranged on one side of the limiting snap ring 15, an extension shaft is arranged in the mounting hole 13, and the structure of the extension shaft can be adjusted and the shape of the extension shaft is not greatly related to the application, so that the extension shaft is not shown in the drawing. The lengthened shaft and the limiting gasket 16 are respectively positioned at two sides of the limiting snap ring 15, and the lengthened shaft and the limiting gasket 16 are connected through a connecting bolt 17. The mounting hole 13 is internally provided with a long key slot 18, and the lengthened shaft is provided with a flat key matched with the long key slot 18. The diameter of the left end of the lengthened shaft is matched with the diameter of the mounting hole 13. The lengthened shaft is arranged in a sliding mode through the mounting hole 13 and is connected with the output shaft 5 through the connecting bolt 17 in a threaded mode, the lengthened shaft can be replaced by the output shaft 5, the length of the output shaft 5 and the diameter of the outer end of the output shaft 5 can be adjusted to adapt to different output occasions, the application range of the speed reducer is expanded, and the lengthened shaft of the output shaft 5 has good rotation synchronism due to the matching of the long key groove 18 and the flat key.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. The utility model provides a multistage roller gear speed reducer, which comprises a housin, be equipped with the input shaft in the casing in proper order, first transmission shaft, secondary drive axle and output shaft, the input shaft, first transmission shaft, secondary drive axle and output shaft all are equipped with the complex drive gear group between two liang, characterized by, the size of input shaft, first transmission shaft, secondary drive axle and output shaft increases in proper order, be equipped with mounting groove on the casing, mounting groove is equipped with the primary shaft bearing who corresponds first transmission shaft towards the inside one end of casing, mounting groove's wall is the circular conical surface.

2. The multi-stage cylindrical gear reducer according to claim 1, wherein the output shaft is provided with a mounting hole penetrating along the axis of the output shaft, the mounting hole is provided with a limiting groove arranged inwards, a limiting snap ring is arranged in the limiting groove, a limiting gasket is arranged on one side of the limiting snap ring, an extension shaft is arranged in the mounting hole, the extension shaft and the limiting gasket are respectively arranged on two sides of the limiting snap ring, and the extension shaft and the limiting gasket are connected through a bolt.

3. The multi-stage cylindrical gear reducer according to claim 2, wherein the mounting hole is provided with a long key groove, and the elongated shaft is provided with a flat key matching with the long key groove.

4. The multi-stage cylindrical gear reducer according to claim 1, wherein a motor is fixedly arranged on one side of the housing, a motor shaft of the motor extends into the housing, and the motor shaft of the motor is used as an input shaft.

5. The multi-stage cylindrical gear reducer according to claim 1 or 2, wherein the housing is detachably provided with a connecting flange fitted to an outer end of the output shaft, and the connecting flange is provided with a recessed cavity.

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