CN216519507U

CN216519507U - Speed reducer with high rated output torque

Info

Publication number: CN216519507U
Application number: CN202122875967.2U
Authority: CN
Inventors: 李一彪; 施余国; 田崇岳
Original assignee: Wilt Gear Nanjing Co ltd
Current assignee: Wilt Gear Nanjing Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-05-13
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a speed reducer with high rated output torque, which comprises a box body, a driving shaft arranged on one side of the box body and an output shaft assembly arranged in the box body and in transmission connection with the driving shaft, wherein the output shaft assembly comprises a plurality of transmission shafts which are in transmission connection with each other through transmission gears, and the central axes of two adjacent transmission shafts are not on the same horizontal line. On the premise of ensuring that the overall dimension of the speed reducer box body and the specification and the dimension of the driving shaft are not changed, the central axes of the two adjacent transmission shafts are not on the same horizontal line, so that the central distance between the two adjacent transmission shafts is increased, the two adjacent transmission shafts can be transmitted through the transmission gear with larger rated torque, and the rated output torque of the speed reducer is improved.

Description

Speed reducer with high rated output torque

Technical Field

The utility model relates to the technical field of speed reducers, in particular to a speed reducer with high rated output torque.

Background

The speed reducer is an independent closed transmission device between the prime motor and the working machine and is used for reducing the rotating speed and increasing the torque so as to meet the working requirement. The speed reducer converts the higher rotating speed of the input shaft into the lower rotating speed of the output shaft through the transmission part, and the rated output torque of the speed reducer determines the capacity of the corresponding working machine. At present, most of industrial speed reducers are standardized and serialized, and the corresponding functions can be realized by selecting standard speed reducers with different models and specifications under different working conditions. The production capacity is often required to be improved in the actual production process, the production requirement is generally met by selecting a speed reducer with the specification larger than that of the existing standard speed reducer by one, but the sizes and the positions of the anchor mounting holes of the standard speed reducers with different specifications are different, and the output connection sizes of the anchor mounting holes are also different, so that the purpose of increasing the output torque is realized by changing the integral foundation of the speed reducer and the driving shaft of the working machine during replacement. Therefore, the whole equipment is changed more, the production cost of an enterprise is greatly increased, and the requirements of people cannot be met.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problem that the rated output torque of the speed reducer is not high due to the limitation of the size in the prior art; the utility model provides a speed reducer with high rated output torque, which can effectively improve the technical effect of the rated output torque of the speed reducer on the premise of ensuring that the size of a shell of the speed reducer and the specification and the size of a driving shaft are not changed.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the speed reducer with high rated output torque comprises a box body, a driving shaft arranged on one side of the box body and an output shaft assembly arranged in the box body and in transmission connection with the driving shaft, wherein the output shaft assembly comprises a plurality of transmission shafts which are in transmission connection together through transmission gears, and the central axes of the two adjacent transmission shafts are not on the same horizontal line.

On the premise of ensuring that the overall dimension of the speed reducer box body and the specification and the dimension of the driving shaft are not changed, the central axes of the two adjacent transmission shafts are not on the same horizontal line, so that the central distance between the two adjacent transmission shafts is increased, the two adjacent transmission shafts can be transmitted through the transmission gear with larger rated torque, and the effect of improving the rated output torque of the speed reducer is further realized.

On the basis of the technical scheme, the utility model can be further improved as follows.

As a preferable technical scheme of the present invention, the heights of the central axes of two adjacent transmission shafts in the horizontal direction are sequentially set in a manner of one higher than one lower.

As a preferable technical scheme of the utility model, the central axes of two transmission shafts of the transmission shafts which are separated by odd numbers are consistent in height in the horizontal direction.

The beneficial effect of adopting above-mentioned preferred technical scheme is that through will separate the odd number the central axis of two transmission shafts of transmission shaft sets up the mode that highly is unanimous in the horizontal direction can be under the unchangeable condition of box size furthest increase the centre-to-centre spacing between all adjacent two transmission shafts to obtain maximum rated torque.

As a preferred technical scheme of the utility model, bearings are arranged at the connection part of the box body and the transmission shaft and at the connection part of the box body and the driving shaft, each bearing comprises an outer ring, an inner ring and a plurality of rolling parts movably clamped between the outer ring and the inner ring, and each rolling part is of a cylindrical structure.

The rolling element in the bearing adopts a cylindrical structure, and compared with the rolling element with the existing spherical structure, the rolling element has larger contact area with the outer ring and the inner ring, so that the problem of short service life of the rolling element caused by overlarge local pressure bearing of the rolling element due to smaller contact surface is avoided, and meanwhile, the larger contact area can also improve the stability of the inner ring relative to the outer ring during rotation.

As a preferred technical scheme of the utility model, a plurality of mounting grooves which are arranged corresponding to the rolling pieces one by one are arranged on the inner side wall of the outer ring, annular grooves which are arranged along the circumferential direction of the inner ring are arranged on the outer side wall of the inner ring, and the rolling pieces are movably clamped between the mounting grooves and the annular grooves.

The beneficial effects of adopting above-mentioned preferred technical scheme are that, the mounting groove and the annular that are used for joint rolling member that set up can play fine limiting displacement to the rolling member, stability and the security that can further improvement rolling member when using.

The utility model has the beneficial effects that:

1. on the premise of ensuring that the overall dimension of the speed reducer box body and the specification and the dimension of the driving shaft are not changed, the central axes of two adjacent transmission shafts are not on the same horizontal line, so that the central distance between the two adjacent transmission shafts is increased, the two adjacent transmission shafts can be transmitted through a transmission gear with larger rated torque, and the effect of improving the rated output torque of the speed reducer is further realized;

2. compared with the existing rolling element with a spherical structure, the rolling element in the bearing has larger contact area with the outer ring and the inner ring, so that the problem of short service life of the rolling element caused by overlarge local pressure bearing of the rolling element due to smaller contact surface is solved, and meanwhile, the larger contact area can also improve the stability of the inner ring relative to the outer ring during rotation.

Drawings

FIG. 1 is a schematic diagram of a high rated output torque reducer according to the present invention;

FIG. 2 is a rear view of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is an enlarged view of the structure at B in FIG. 3;

FIG. 5 is a schematic structural view of the case of the present invention;

the symbols in the drawings illustrate that:

the device comprises a box body 1, a driving shaft 2, a transmission shaft 3, an outer ring 4, an inner ring 5 and rolling parts 6.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings.

At present, in the production process of enterprises, the requirement of replacing a speed reducer with larger output torque due to the need of improving the productivity is often met, and the production requirement is generally met by selecting a speed reducer with the size one larger than that of the existing standard speed reducer in the prior art, but the sizes and the positions of the anchor mounting holes of the standard speed reducers with different specifications are different, and the output connection sizes of the anchor mounting holes are also different, so that the purpose of increasing the output torque is realized by changing the whole foundation of the speed reducer and the driving shaft of a working machine when the speed reducer is replaced. Therefore, the whole equipment is changed more, and the production cost of enterprises is greatly increased. Therefore, the present invention proposes a speed reducer with high rated output torque to solve the above problems.

The present invention provides the following preferred embodiments

As shown in fig. 1 to 5, a speed reducer with high rated output torque comprises a box body 1, a driving shaft 2 arranged on one side of the box body 1, and an output shaft assembly arranged inside the box body 1 and in transmission connection with the driving shaft 2 through a bevel gear, wherein the output shaft assembly comprises a plurality of transmission shafts 3 which are in transmission connection through transmission gears, and the central axes of two adjacent transmission shafts 3 are not on the same horizontal line; (ii) a The central axes of the two adjacent transmission shafts 3 are arranged not to be on the same horizontal line, so that the central distance between the two adjacent transmission shafts 3 is increased under the condition that the size of the box body 1 of the speed reducer and the size of the driving shaft 2 are not changed, the two adjacent transmission shafts 3 can be transmitted through the transmission gear with larger rated torque, and the effect of improving the rated output torque of the speed reducer is further realized; specifically, the heights of the central axes of two adjacent transmission shafts 3 in the horizontal direction are sequentially arranged in a mode of one higher height and one lower height; the heights of the central axes of the two transmission shafts 3 which are separated by odd numbers of the transmission shafts 3 in the horizontal direction are consistent; in this embodiment, a R3DH9 rectangular axis three-stage transmission speed reducer (with hollow output of a tightening disc) is taken as an example for further detailed description, in this type of speed reducer, the output shaft assembly includes three transmission shafts 3 which are in transmission connection through transmission gears, when the speed reducer is installed, a middle transmission shaft 3 is installed downwards so that a certain height difference is formed between the central axis of the middle transmission shaft and the central axes of the transmission shafts on two sides, thereby increasing the center distance between the middle transmission shaft and the transmission shafts on two sides, and further, under the condition that the external dimension of the box body 1 is not changed, the transmission gears with larger rated torque can be used for transmission between the middle transmission shaft and the transmission shafts on two sides, thereby achieving the effect of increasing the rated output torque of the speed reducer, in this embodiment, the rated output torque of the R3DH9 rectangular axis three-stage transmission before modification is 35.7kn.m, after upgrading and reconstruction, the rated output of the utility model is 42.9kN.m, and the lifting ratio is 20%;

more specifically, in this embodiment, all be equipped with the shaft hole with the junction of transmission shaft 3 and with the junction of drive shaft 2 on the box 1, the shaft hole internal fixation is equipped with the bearing, the bearing includes outer lane 4, inner circle 5 and a plurality of rolling member 6 of activity joint between outer lane 4 and inner circle 5, rolling member 6 is cylindrical structure. Compared with the existing rolling element with a spherical structure, the rolling element 6 has larger contact area with the outer ring 4 and the inner ring 5, so that the problem that the service life of the rolling element is short due to overlarge local pressure bearing of the rolling element 6 caused by smaller contact surface is avoided, and meanwhile, the larger contact area can also improve the stability of the inner ring 5 relative to the outer ring 4 during rotation; and simultaneously, a plurality of and the mounting groove (not marking in the figure) that the 6 one-to-one of rolling member set up on the inside wall of outer lane 4, be equipped with an annular (not marking in the figure) that sets up along the circumference direction of inner circle 5 on the lateral wall of inner circle 5, the activity joint of rolling member 6 is between mounting groove and annular, each promptly one side semicylinder activity joint of rolling member 6 is in the mounting groove that corresponds, opposite side semicylinder of rolling member 6 then the joint is in the annular.

Finally, it should be noted that: these embodiments are merely illustrative of the present invention and do not limit the scope of the present invention. In addition, other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the utility model may be made without departing from the scope of the utility model.

Claims

1. The utility model provides a speed reducer of high rated output moment of torsion, includes box (1), sets up in drive shaft (2) of box (1) one side, sets up in box (1) inside and with the output shaft subassembly of drive shaft (2) transmission connection, its characterized in that: the output shaft assembly comprises a plurality of transmission shafts (3) which are connected together through transmission gears in a transmission mode, and the central axes of every two adjacent transmission shafts (3) are not on the same horizontal line.

2. A high-rated-output-torque reducer according to claim 1, wherein: the heights of the central axes of the two adjacent transmission shafts (3) in the horizontal direction are sequentially arranged in a mode of one high and one low.

3. A high-rated-output-torque reducer according to claim 2, wherein: the central axes of two transmission shafts (3) which are separated by odd numbers of the transmission shafts (3) are consistent in height in the horizontal direction.

4. A high-rated-output-torque reducer according to claim 1, wherein: the bearing is arranged at the joint of the box body (1) and the transmission shaft (3) and at the joint of the drive shaft (2), and comprises an outer ring (4), an inner ring (5) and a plurality of rolling pieces (6) which are movably clamped between the outer ring (4) and the inner ring (5), wherein the rolling pieces (6) are of cylindrical structures.

5. A high-rated-output-torque reducer according to claim 4, wherein: the mounting groove that a plurality of and rolling member (6) one-to-one set up on the inside wall of outer lane (4), be equipped with the annular that sets up along the circumference direction of inner circle (5) on the lateral wall of inner circle (5), the activity joint of rolling member (6) is between mounting groove and annular.