CN213776101U

CN213776101U - Roller type rotary drive

Info

Publication number: CN213776101U
Application number: CN202022341140.9U
Authority: CN
Inventors: 钱峰; 孙磊
Original assignee: Xuzhou Saiyue Construction Machinery Co Ltd
Current assignee: Xuzhou Saiyue Construction Machinery Co Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-07-23
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses a roller type rotary drive, which comprises a shell, a rotary support, a motor and a roller; the slewing bearing is arranged in the shell, is of an external tooth type, has a tooth shape of a trochoid curve, and comprises a bearing inner ring and a bearing outer ring, wherein the bearing outer ring is arranged on the circumferential outer side of the bearing inner ring; the roller comprises a rotating shaft, supporting plates and rolling pins, the upper part and the lower part of the roller are respectively provided with the supporting plates, and a plurality of rolling pins are uniformly arranged between the two supporting plates at intervals; the gyro wheel sets up inside the casing, and the top and the bottom of gyro wheel are fixed with the casing through big bearing respectively, rolls the pin and the external tooth meshing that supports the outer lane, and the motor is located the casing outside and is connected with the casing, and the output shaft of motor passes through the key and is connected with the pivot. The utility model discloses roll the round pin and drive the supporting outer lane rotation again with the external tooth meshing of supporting outer lane, roll round pin self but free rotation, when meshing with supporting outer lane external tooth, be transformed into rolling friction with sliding friction, reduced generate heat and wearing and tearing and noise.

Description

Roller type rotary drive

Technical Field

The utility model relates to a rotary drive, concretely relates to roller type rotary drive.

Background

‌ the straight-tooth rotary drive has the advantages of high transmission efficiency, high rotation speed, simple structure, and convenient installation and maintenance. Meanwhile, the problems of low transmission precision, accelerated abrasion at high rotating speed, and tooth knocking sound and rolling sound exist. The straight tooth type rotation driving gear is processed by a hobbing method or a linear cutting method, so that the cost is high, the processing time is long, the efficiency is low, the gear precision is not high, and the gear precision influences the transmission precision of the rotation driving.

Disclosure of Invention

To the problem that above-mentioned prior art exists, the utility model provides a roller type swing drive, transmission precision is high, and degree of wear is low.

In order to achieve the above object, the utility model provides a following technical scheme: a roller type rotary drive comprises a shell, a rotary support, a motor and a roller; the slewing bearing is arranged in the shell, is of an external tooth type, has a tooth shape of a trochoid curve, and comprises a bearing inner ring and a bearing outer ring, wherein the bearing outer ring is arranged on the circumferential outer side of the bearing inner ring; the roller comprises a rotating shaft, supporting plates and rolling pins, the upper part and the lower part of the roller are respectively provided with the supporting plates, and a plurality of rolling pins are uniformly arranged between the two supporting plates at intervals; the gyro wheel sets up inside the casing, and the top and the bottom of gyro wheel are fixed with the casing through big bearing respectively, rolls the pin and the external tooth meshing that supports the outer lane, and the motor is located the casing outside and is connected with the casing, and the output shaft of motor passes through the key and is connected with the pivot.

Furthermore, the supporting plate is fixedly connected with the rotating shaft through a screw.

Further, the top end and the bottom end of the rolling pin are provided with bearings, and the rolling pin is connected with the support plate through the bearings.

Compared with the prior art, the utility model has the advantages that the rolling pin is meshed with the external teeth of the supporting outer ring to drive the supporting outer ring to rotate, the rolling pin can freely rotate, and when the rolling pin is meshed with the external teeth of the supporting outer ring, sliding friction is converted into rolling friction, so that heating, abrasion and noise are reduced; the large bearing bears the radial force generated between the slewing bearing and the roller, reduces the radial displacement of the roller, ensures the meshing precision of the roller pin and the outer teeth of the outer ring of the bearing, and improves the transmission precision and stability; the two ends are supported, so that the radial force borne by the output shaft of the motor is reduced, and the probability of breakage of the output shaft is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an axial cross-sectional view of the roller;

FIG. 3 is a radial cross-sectional view of the roller;

in the figure: 1. the bearing comprises a shell, 2, a slewing bearing, 2.1, a bearing inner ring, 2.2, a bearing outer ring, 3, a motor, 4, a roller, 4.1, a rolling pin, 4.2, a bearing, 4.3, a supporting plate, 4.4, a rotating shaft, 5 and a large bearing.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a technical solution: comprises a shell 1, a slewing bearing 2, a motor 3 and a roller 4; the slewing bearing 2 is arranged in the shell 1, the slewing bearing 2 is of an outer tooth type, the tooth form of the slewing bearing 2 is of a trochoid curve tooth form, the slewing bearing 2 comprises a bearing inner ring 2.1 and a bearing outer ring 2.2, and the bearing outer ring 2.2 is arranged on the circumferential outer side of the bearing inner ring 2.1.

As shown in fig. 2 and 3, the roller 4 includes a rotating shaft 4.4, a supporting plate 4.3 and a rolling pin 4.1, the upper part and the lower part of the roller 4 are respectively provided with the supporting plate 4.3, the supporting plate 4.3 is fixedly connected with the rotating shaft 4.4 through a screw, the connection is firm, a plurality of rolling pins 4.1 are uniformly arranged between the two supporting plates 4.3 at intervals, in order to ensure that the rolling pin 4.1 rotates more smoothly, the top end and the bottom end of the rolling pin 4.1 are provided with bearings 4.2, and the rolling pin 4.1 is connected with the supporting plate 4.3 through the bearings 4.2; the gyro wheel 4 sets up inside casing 1, and the top and the bottom of gyro wheel 4 are fixed with casing 1 through big bearing 5 respectively, rolls round pin 4.1 and the external tooth meshing of supporting outer lane 2.2, and motor 3 is located the casing 1 outside and is connected with casing 1, and motor 3's output shaft passes through the key and is connected with pivot 4.4.

An output shaft of the motor 3 is connected with a rotating shaft 4.4 through a key, the motor 3 works and rotates, power is transmitted to the rotating shaft 4.4 through the key to drive the rotating shaft to rotate, a rolling pin 4.1 is meshed with external teeth of a supporting outer ring 2.2 to drive the supporting outer ring 2.2 to rotate, the rolling pin 4.1 can freely rotate, and when the rolling pin is meshed with the external teeth of the supporting outer ring 2.2, sliding friction is converted into rolling friction, so that heating, abrasion and noise are reduced; the top end and the bottom end of the roller 4 are respectively fixed with the shell 1 through the large bearing 5, the large bearing 5 bears the radial force generated between the slewing bearing 2 and the roller 4, the radial displacement of the roller 4 is reduced, the meshing precision of the roller pin 4.1 and the outer teeth of the bearing outer ring 2.2 is ensured, and the transmission precision and the stability are improved; the two ends are supported, so that the radial force borne by the output shaft of the motor 3 is reduced, and the probability of breakage of the output shaft is reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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.

The above, only do the preferred embodiment of the present invention, not used to limit the present invention, all the technical matters of the present invention should be included in the protection scope of the present invention for any slight modification, equivalent replacement and improvement of the above embodiments.

Claims

1. A roller type rotary drive comprises a shell (1), a rotary support (2), a motor (3) and a roller (4); the slewing bearing (2) is arranged in the shell (1), the slewing bearing (2) is of an outer tooth type, the tooth form of the slewing bearing is of a trochoid curve tooth form, the slewing bearing (2) comprises a bearing inner ring (2.1) and a bearing outer ring (2.2), and the bearing outer ring (2.2) is arranged on the circumferential outer side of the bearing inner ring (2.1); the device is characterized in that the roller (4) comprises a rotating shaft (4.4), supporting plates (4.3) and rolling pins (4.1), the upper part and the lower part of the roller (4) are respectively provided with the supporting plates (4.3), and a plurality of rolling pins (4.1) are uniformly arranged between the two supporting plates (4.3) at intervals; the roller (4) is arranged inside the shell (1), the top end and the bottom end of the roller (4) are fixed with the shell (1) through a large bearing (5), the roller pin (4.1) is meshed with the outer teeth of the supporting outer ring (2.2), the motor (3) is positioned outside the shell (1) and connected with the shell (1), and the output shaft of the motor (3) is connected with the rotating shaft (4.4) through a key.

2. A roller-type rotary drive according to claim 1, wherein: the supporting plate (4.3) is fixedly connected with the rotating shaft (4.4) through a screw.

3. A roller-type rotary drive according to claim 1, wherein: the top end and the bottom end of the rolling pin (4.1) are provided with bearings (4.2), and the rolling pin (4.1) is connected with the support plate (4.3) through the bearings (4.2).