CN213685145U

CN213685145U - Speed reducer with single-shaft input and multi-shaft output

Info

Publication number: CN213685145U
Application number: CN202022670940.5U
Authority: CN
Inventors: 廖翠平; 沈国芳
Original assignee: HANGZHOU SUPERIOR TRANSMISSION MACHINERY CO LTD
Current assignee: HANGZHOU SUPERIOR TRANSMISSION MACHINERY CO LTD
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-07-13
Anticipated expiration: 2030-11-18

Abstract

The utility model relates to a speed reduction device. A speed reducer with single-shaft input and multi-shaft output comprises a shell, wherein an input shaft is arranged in the shell, the input shaft is connected with an intermediate shaft through gear transmission, the intermediate shaft is connected with a first output shaft through gear transmission, a first sun gear, a first planet gear and a first gear ring are fixed on the first output shaft, the first gear ring is fixed on the inner wall of a shell, and the first planet gear is fixed on the first output shaft; and a second gear ring is arranged on one side of the first gear ring, a second planet wheel and a second sun wheel are arranged in the second gear ring, the second planet wheel is also fixed on the planet carrier through a planet shaft, and the second sun wheel is fixed on a second output shaft. The utility model provides a speed reducer structure with compact structure, one input shaft driving a plurality of output ends, good output power and high precision for single-shaft input and multi-shaft output; the technical problems that a speed reducing device in the prior art is large in size, incapable of realizing coaxial and same-direction double output, insufficient in output power and the like are solved.

Description

Speed reducer with single-shaft input and multi-shaft output

Technical Field

The utility model relates to a decelerator especially relates to a gear drive's concentric decelerator of biax.

Background

The reducer is an independent part consisting of gear transmission, worm transmission and gear-worm transmission enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. The function of matching the rotation speed and transmitting the torque between the prime mover and the working machine or the actuating mechanism is very extensive in modern machinery.

At present, a chinese patent with publication number CN101338810A, published as 2009, 1/7, discloses a double-shaft-extension-input-vertical-double-shaft-output speed reducer, which comprises a box body, an input shaft, a transmission gear and an output shaft, wherein the box body is provided with the input shaft and the output shaft, the input shaft is in a double-shaft-extension structure, the transmission gear of the input shaft for transmitting the vertical output shaft is a transmission bevel gear, the transmission bevel gear is formed by meshing a small bevel gear fixedly mounted on the input shaft and a large bevel gear fixedly mounted on the output shaft, the output shaft is provided with a driving gear, and the driving gear is meshed with a driven gear mounted on the other output shaft in a transmission manner, so as.

In the speed reducer with double-shaft extension input and vertical double-shaft output, a driving helical gear and a driven gear are respectively arranged on two output shafts, and the driving helical gear and the driven helical gear are meshed with each other, so that the linkage of the two output shafts is realized; however, when the two output shafts are linked through the driving bevel gear and the driven bevel gear, the rotation directions of the driving bevel gear and the driven bevel gear are opposite, so that the rotation directions of the two output shafts are opposite, and the installation condition that the two output shafts rotate in the same direction is difficult to meet.

Disclosure of Invention

The utility model provides a speed reducer structure with compact structure, one input shaft driving at least two same-direction outputs, good output power and high precision for single-shaft input and multi-shaft output; the technical problems that a speed reducing device in the prior art is large in size, incapable of realizing coaxial and same-direction double output, insufficient in output power and the like are solved.

The utility model also provides a speed reducer which can provide worm and gear transmission output except the output shaft, realize one input and three outputs and improve the output flexibility and diversity; the technical problems of few output and single output mode in the prior art are solved.

The above technical problem of the present invention is solved by the following technical solutions: a speed reducer with single-shaft input and multi-shaft output comprises a shell, wherein an input shaft is arranged in the shell, the input shaft is connected with an intermediate shaft through gear transmission, the intermediate shaft is connected with a first output shaft through gear transmission, a first sun gear is fixed on the first output shaft, a planet carrier is sleeved on the first output shaft, the first sun gear is meshed with a first gear ring, the first gear ring is fixed on the inner wall of the shell, the first sun gear is also meshed with a first planet gear, the first planet gear is fixed on the first output shaft, and the first planet gear is installed on the planet carrier through a planet shaft; and a second gear ring is arranged on one side of the first gear ring, a second planet wheel and a second sun wheel are arranged in the second gear ring, the second planet wheel is also fixed on the planet carrier through a planet shaft, and the second sun wheel is fixed on a second output shaft.

The two sets of planetary devices have the same parameters and structures, one set of planetary device is in main transmission, and the other set of planetary device is in passive transmission, and the planetary transmission device is characterized in that a planetary shaft is shared, and finally, the simultaneous, equidirectional and synchronous operation of two output shafts in different directions on the same shaft is realized. Because the inner gear ring of the second set of planetary device is floating, the outer ring of the inner gear ring is provided with a worm gear tooth form, and the transmission of the worm gear pair is realized.

One end of the intermediate shaft is connected with an input shaft through a gear, the other end of the intermediate shaft drives a gear wheel fixed on a first output shaft through an end gear to rotate, so that power is provided for the first output shaft, the first output shaft drives power output of a second output shaft through a planetary gear carrier structure, a second gear ring is rotated, possibility is provided for multi-mode output, another variable speed output can be provided according to the number of teeth of the second gear ring, the structure is compact, and the synchronism is good. Meanwhile, the transmission output mode of the planet gear carrier has the advantages of high load and large transmission ratio.

Preferably, the second ring gear has worm gear teeth on an outer circumferential surface thereof, and a worm accommodating space is provided between the second ring gear and the housing. The second ring gear rotates along with the second planet gear, and worm gear teeth are additionally arranged on the outer circumferential surface of the second ring gear, so that the speed reducing device increases the output mode of a worm gear form, and the diversity of the output mode is provided.

Preferably, the diameters of the first sun wheel and the second sun wheel are the same, and the diameters of the first planet wheel and the second planet wheel are the same.

Preferably, the first output shaft is coaxial with the second output shaft.

Preferably, the planet carrier comprises two carrier bodies which are connected through a planet shaft, wherein the first carrier body is fixed on the first output shaft, and the second carrier body is fixed on the second output shaft.

Preferably, the distance between the first and second carrier bodies is equal to the sum of the thicknesses of the first and second planet wheels. The structure is compact, and the volume of the speed reducing device is smaller.

Preferably, a first flange is fixed to an end of the first output shaft, a first bearing is provided at the end of the first output shaft, and a first oil seal is provided outside the first bearing. And a second flange is fixed at the end part of the second output shaft, a second bearing is arranged at the end part of the second output shaft, and a second oil seal is arranged outside the second bearing. The lubricating oil can not be leaked while the effective lubrication of the output shaft and the supporting bearing is realized.

Therefore, the utility model discloses a decelerator of unipolar input multiaxis output possesses following advantage: the structure is compact, the one-input three-output mode can be realized, and the output mode is diversified; the second gear ring rotates, worm gear teeth are arranged on the outer circumferential surface of the second gear ring, the output transmission mode of a worm gear is achieved, and speed change is achieved according to the tooth number arrangement of the outer circumferential surface of the gear ring.

Drawings

Fig. 1 is a schematic diagram of a single-shaft input and multi-shaft output speed reducer according to the present invention.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b):

as shown in fig. 1, a reduction gear with single-shaft input and multiple-shaft output includes a housing 16, and a first cover 24 is mounted on one side of the housing 16. An input shaft 51 is arranged below the shell 16, the input shaft 51 is supported through a ball bearing 49, a pinion 53 is sleeved on the input shaft 51, and the pinion 53 is in meshing transmission with the bull gear 46 to drive the intermediate shaft 35 fixed with the bull gear 46 to rotate. One end of the intermediate shaft 35 is sleeved with a ball bearing, the other end of the intermediate shaft 35 is sleeved with a single-row cylindrical roller bearing 31, a transmission pinion 34 is fixed at the other end of the intermediate shaft 35 through a flat key 33, the transmission pinion 34 is in meshed transmission with the transmission gearwheel 30, a spacer sleeve 32 is arranged between the gearwheel 46 and the ball bearing, and the spacer sleeve 32 is also arranged between the transmission pinion 34 and the single-row cylindrical roller bearing 31. The driving gearwheel 30 is fixed on the first output shaft 25 by a bolt, and the rotation of the driving gearwheel 20 drives the first output shaft 25 to rotate. The single-row bearing 28 is sleeved at one end of the first output shaft 25, the first box cover 22 is sleeved outside the single-row bearing 28, the first end cover 23 is fixed on the end face of the first box cover 22 through bolts, the first flange plate 24 is fixed at the end part of the first output shaft 25 through bolts, a first oil seal 27 is arranged between the first flange plate 24 and the first end cover 23, and the first oil seal 27 is connected with the single-row bearing 28 to prevent lubricating oil of the first output shaft 25 from flowing out.

The other end of the first output shaft 25 is sleeved with a first sun gear 26, the first sun gear 26 is fixed on the first output shaft 25 through a flat key, and then the end part of the first sun gear 26 is axially fixed on the first output shaft 25 through a brake pad 37 and a round nut 38. The first sun gear 26 is externally provided with a first planet gear 18, the first planet gear 18 is mounted on the planet shaft 20 through an inner-ring-free needle bearing 19, the first planet gear 18 is externally provided with a first ring gear 17, and the first ring gear 17 is fixed on the inner wall of the shell 16. The planet shaft 20 is also sleeved with a second planet wheel 35 which is arranged in parallel with the first planet wheel 18, the diameters of the first planet wheel 18 and the second planet wheel 35 are the same, the second planet wheel 35 is meshed with a second sun wheel 39 and a second gear ring 36 at the same time, the second sun wheel 39 is fixed on a second output shaft 42 through a flat key, and the second output shaft 42 is coaxial with the first output shaft 25. A worm gear is provided on an outer circumferential surface of the second ring gear 36, and a worm accommodating space is provided between the second ring gear 36 and the housing 16, and a third output mode can be formed by installing a worm.

The end of the second output shaft 42 fixes the axial direction of the second sun gear 39 by the round nut 38 and the stopper washer 37. The planet shaft 20 is installed on the planet carrier, and the planet carrier includes two support bodies, and two support bodies pass through the planet hub connection, and the both ends of planet shaft 20 are fixed on two support bodies through nut 21 respectively. Wherein the first frame 29 is fixed to the first output shaft 25 and the second frame 45 is fixed to the second output shaft 42. The end of the second output shaft 42 is supported by a single-row bearing, the end face of the housing is fixed with a second end cover 44 through bolts, the end of the second output shaft 42 is fixed with a second flange 43 through bolts, a second oil seal 41 is arranged between the second flange 43 and the second end cover 40, and the second oil seal 41 is connected with the single-row bearing to prevent lubricating oil of the second output shaft 42 from flowing out.

Claims

1. The utility model provides a decelerator of unipolar input multiaxis output, includes the casing, is equipped with input shaft, its characterized in that in the casing: the input shaft is connected with an intermediate shaft through gear transmission, the intermediate shaft is connected with a first output shaft through gear transmission, a first sun gear is fixed on the first output shaft, a planet carrier is sleeved on the first output shaft, the first sun gear is meshed with a first gear ring, the first gear ring is fixed on the inner wall of the shell, the first sun gear is also meshed with a first planet gear, the first planet gear is fixed on the first output shaft, and the first planet gear is installed on the planet carrier through a planet shaft; and a second gear ring is arranged on one side of the first gear ring, a second planet wheel and a second sun wheel are arranged in the second gear ring, the second planet wheel is also fixed on the planet carrier through a planet shaft, and the second sun wheel is fixed on a second output shaft.

2. The single-shaft input multi-shaft output reduction gear according to claim 1, wherein: the outer circumferential surface of the second gear ring is provided with worm gear teeth, and a worm accommodating space is arranged between the second gear ring and the shell.

3. A single-shaft-input multi-shaft-output reduction gear according to claim 1 or 2, characterized in that: the first output shaft is coaxial with the second output shaft.

4. A single-shaft-input multi-shaft-output reduction gear according to claim 1 or 2, characterized in that: the diameters of the first sun wheel and the second sun wheel are the same, and the diameters of the first planet wheel and the second planet wheel are the same.

5. A single-shaft-input multi-shaft-output reduction gear according to claim 1 or 2, characterized in that: the planet carrier include two support bodies, two support bodies pass through the planet axle and connect, wherein first support body is fixed on first output shaft, the second support body is fixed on the second output shaft.

6. The single-shaft input multi-shaft output reduction gear according to claim 5, wherein: the distance between the first support body and the second support body is equal to the sum of the thicknesses of the first planet wheel and the second planet wheel.

7. A single-shaft-input multi-shaft-output reduction gear according to claim 1 or 2, characterized in that: the end part of the first output shaft is fixedly provided with a first flange plate, the end part of the first output shaft is provided with a first bearing, and a first oil seal is arranged outside the first bearing.

8. A single-shaft-input multi-shaft-output reduction gear according to claim 1 or 2, characterized in that: and a second flange is fixed at the end part of the second output shaft, a second bearing is arranged at the end part of the second output shaft, and a second oil seal is arranged outside the second bearing.