CN210003778U

CN210003778U - three-stage helical gear speed reducer

Info

Publication number: CN210003778U
Application number: CN201920827311.3U
Authority: CN
Inventors: 江建斌; 江建敏; 朱辉兵
Original assignee: ZHEJIANG SANKAI MECHANICAL AND ELECTRICAL CO Ltd
Current assignee: ZHEJIANG SANKAI MECHANICAL AND ELECTRICAL CO Ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-01-31
Anticipated expiration: 2029-06-03

Abstract

The utility model provides an tertiary helical gear speed reducer, belong to mechanical technical field this tertiary helical gear speed reducer is including shell and the shell two that link firmly mutually, vacuole formation between shell 0 and the shell two, be equipped with the input shaft in the cavity, output shaft and transmission shaft 1, transmission shaft end links to each other with the output shaft through second gear reduction mechanism, be equipped with transmission shaft two between transmission shaft in addition end and the input shaft, two do not pass through second gear reduction mechanism and third gear reduction mechanism and input shaft and transmission shaft link to each other in the cavity, be equipped with the support in the cavity, the support links firmly with shell two, the recess has on the support, the recess comprises just to the two cell walls that set up and the diapire that is in between two cell walls, the axial distribution of input shaft is followed to two cell walls, transmission shaft two rotate and set up in the recess, the input shaft end stretches into in the recess, a transmission shaft other end is connected with the rotation, second gear reduction mechanism and third gear reduction mechanism all are located the recess.

Description

three-stage helical gear speed reducer

Technical Field

The utility model belongs to the technical field of machinery, a kind of speed reducers, especially kind of tertiary helical gear speed reducers are related to.

Background

The helical gear speed reducer is a novel speed reduction transmission device, adopts an optimized design concept of an advanced module combination system, has the characteristics of small volume, light weight, large transmission torque, stable starting, fine transmission ratio classification and the like, and can be randomly connected and selected from various installation positions according to the requirements of users.

The conventional speed reducer comprises a box body, a -level input speed reduction gear set, a two-level speed reduction gear set and a three-level output gear set, wherein the -level input speed reduction gear set, the two-level speed reduction gear set and the three-level output gear set are all arranged in the box body, the box body comprises a -level aluminum box body, a two-level aluminum box body and a three-level aluminum box body, the -level aluminum box body is movably connected with the two-level aluminum box body through a connecting piece, the two-level aluminum box body is movably connected with the three-level aluminum box body through a connecting piece, the -level input speed reduction gear set is located in the two-level aluminum box body, and the two-level speed reduction gear set and the three-level output gear set are located in.

The speed reducer has problems that the box body is divided into three parts, every two parts of the three parts are connected through bolts, when the speed reducer is applied to a severe environment, external dust easily enters the box body through the connecting part, the abrasion speed of parts in the box body is increased, and the service life of the speed reducer is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having above-mentioned problem to current technique, provided kind of tertiary helical gear speed reducers, the technical problem of solution is inside how to reduce impurity entering speed reducer.

The utility model discloses a purpose can be realized through following technical scheme three-level helical gear speed reducer, including fixing shell and shell two from , form cavity between shell and the shell two, be equipped with the input shaft in the cavity, output shaft and transmission shaft , and input shaft and output shaft rotate with shell and shell two respectively and are connected, end of transmission shaft links to each other with the output shaft through gear reduction mechanism, level is equipped with transmission shaft two between another end of transmission shaft and the input shaft, two of transmission shaft link to each other with input shaft and transmission shaft through second gear reduction mechanism and third gear reduction mechanism respectively, a serial communication port, shell and shell two distribute along the axial of input shaft, still be equipped with the support in the cavity, the support is located between input shaft and the output shaft, and the end of support links firmly with shell two, the recess has on the support, the recess comprises two cell walls that just set up and the diapire that is located between two cell walls, and two cell walls axial distribution of input shaft, the above-mentioned second transmission shaft rotates and sets up in , the recess that input shaft stretches into , and the recess and the rotation mechanism is located the second gear reduction mechanism, the second gear reduction mechanism.

The support is arranged in the cavity and used for supporting the output shaft and the second transmission shaft, so that the three shells in the prior art are changed into the shell and the shell II which are applied for cost, the two parts in the prior art are connected with the which is applied for cost, the probability that impurities such as external dust enter the cavity is effectively reduced, the service life of the speed reducer is prolonged, meanwhile, the gear speed reducing mechanism, the second gear speed reducing mechanism and the second transmission shaft are arranged in the grooves, the distance among transmission parts is effectively reduced, the whole structure is compact, and the occupied area is reduced.

In the three-stage helical gear reducer, the cavity is also internally provided with a connecting sleeve, the support is positioned between the connecting sleeve and the output shaft and is fixedly connected with the connecting sleeve, the connecting sleeve is sleeved outside the input shaft and is rotatably connected with the input shaft through an th bearing, and under the matching of the connecting sleeve and a th bearing, the step support is carried out on the input shaft to improve the transmission stability and precision.

In the three-stage helical gear reducer, the bracket is provided with a circular arc-shaped lead-in part, the lead-in part and the connecting sleeve are coaxially arranged, the lead-in part is inserted into the connecting sleeve, and the outer side wall of the lead-in part abuts against the inner side wall of the connecting sleeve. Under the effect of the guiding part, the assembly of the bracket and the connecting sleeve is guided, so that the assembly convenience is improved.

In the three-stage helical gear reducer, the input shaft is rotatably connected with the shell through the second bearing, and two ends of the connecting sleeve are respectively pressed against the outer ring of the second bearing and the bracket.

In the three-stage helical gear reducer, an annular shoulder is integrally formed on the outer side wall of the input shaft, the bearing is positioned between the annular shoulder and the bracket, and the inner ring and the outer ring of the bearing respectively abut against the annular shoulder and the leading-in part, and under the matching of the leading-in part and the annular shoulder, the bearing is effectively limited in the axial direction, so that the working stability is improved.

Compared with the prior art, the three-stage helical gear speed reducer has the following advantages:

1. through set up the support in the cavity inside and be used for supporting output shaft and transmission shaft two to become shell and the shell two of cost application with three shell among the prior art, thereby connect the department of becoming cost application with two among the prior art and connect, then effectively reduce impurity such as outside dust and enter into the inside probability of cavity, prolong the life-span of this speed reducer.

2. The gear reduction mechanism, the second gear reduction mechanism and the second transmission shaft are all arranged in the groove, so that the distance between the transmission parts is effectively reduced, the whole structure is compact, and the occupied area is reduced.

Drawings

Fig. 1 is a schematic sectional structure view of the present three-stage helical gear speed reducer.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

Fig. 3 is a schematic view of a connecting structure of the bracket and the second transmission shaft.

In the figure, the bearing comprises a shell 1, a shell , a shell 2, a shell II, a cavity 3, a cavity 4, an input shaft 4a, an annular shoulder 5, an output shaft 6, a transmission shaft , a second bearing 7, a transmission shaft II, an output gear 9, a pinion gear 10 and , a bull gear 11 and , a bull gear 12 and a bull gear 13, a bracket 13, a groove 13a and a groove 13a1, a groove wall 13b, an introduction part 14, a connecting sleeve 15 and a bearing .

Detailed Description

The following is a description of the technical solution of the present invention in steps with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in FIG. 1, the three-stage helical gear reducer comprises a housing 1 and a housing II 2 which are fixed at , wherein a cavity 3 is formed between the housing 1 and the housing II 2, and in the embodiment, the housing 1 and the housing II 2 are preferably detachably and fixedly connected through a plurality of bolts.

Specifically, an input shaft 4, an output shaft 5 and a transmission shaft 6 are horizontally arranged in the cavity 3, wherein the input shaft 4 is rotatably connected with the housing 1 through a second bearing 7, both ends of the output shaft 5 are rotatably connected with the housing II 2 through a third bearing, the end of the transmission shaft 6 is rotatably connected with the housing II 2 through a fourth bearing, as shown in fig. 1, the end of the transmission shaft 6 is connected with the output shaft 5 through a gear reduction mechanism, a transmission shaft II 8 is horizontally arranged between the other end of the transmission shaft 6 and the input shaft 4, and the transmission shaft II 8 is respectively connected with the input shaft 4 and the transmission shaft 6 through a second gear reduction mechanism and a third gear reduction mechanism.

In this embodiment, the drive shaft 6 is a toothed shaft, the gear reduction mechanism includes an external gear on the drive shaft and an output gear 9 fixed on the output shaft 5, and the output gear 9 meshes with the external gear on the drive shaft 6. the second gear reduction mechanism includes a -stage pinion gear 10 fixed on the input shaft 4 and a -stage bull gear 11 fixed on the second drive shaft 8, and the -stage pinion gear 10 meshes with the -stage bull gear 11. the second drive shaft 8 is also a toothed shaft, the third gear reduction mechanism includes an external gear on the second drive shaft 8 and a second-stage bull gear 12 fixed on the drive shaft 6, and the second-stage bull gear 12 meshes with the external gear on the second drive shaft 8.

As shown in fig. 1, the housing 1 and the housing two 2 are distributed along the axial direction of the input shaft 4, the cavity 3 is further provided with a support 13, the support 13 is located between the input shaft 4 and the output shaft 5, and the end of the support 13 is fixedly connected with the housing two 2. preferably, the support 13 and the housing two 2 are fixedly connected with through a plurality of bolts, the support 13 is provided with a groove 13a, the groove 13a is composed of two groove walls 13a1 which are oppositely arranged and a bottom wall which is located between the two groove walls 13a1, and the two groove walls 13a1 are distributed along the axial direction of the input shaft 4. in this embodiment, the transmission shaft two 8 is rotatably arranged in the groove 13a, and preferably, both ends of the transmission shaft are rotatably connected with the support 13 through a fifth bearing, the end of the input shaft 4 extends into the groove 13a, the other end of the transmission shaft 6 is rotatably connected with the support 13 through a sixth bearing, and the second gear reduction mechanism and the third gear reduction mechanism are both located.

, a connecting sleeve 14 is further provided in the cavity 3, the bracket 13 is located between the connecting sleeve 14 and the output shaft 5, and the bracket 13 is fixedly connected to the connecting sleeve 14. preferably, the connecting sleeve 14 and the bracket 13 are fixedly connected to by a plurality of bolts, further , both ends of the connecting sleeve 14 respectively press against the outer ring of the second bearing 7 and the bracket 13, the bracket 13 is provided with a guide-in portion 13b in a circular arc shape, the guide-in portion 13b and the connecting sleeve 14 are coaxially arranged, the guide-in portion 13b is inserted into the connecting sleeve 14, and the outer side wall of the guide-in portion 13b abuts against the inner side wall of the connecting sleeve 14. under the action of the guide-in portion 13b, the assembly of the bracket 13 and the connecting sleeve 14 is guided, so as to improve.

As shown in FIG. 1, the connecting sleeve 14 is sleeved outside the input shaft 4, and the connecting sleeve 14 is rotatably connected with the input shaft 4 through an th bearing 15. in cooperation with the connecting sleeve 14 and the th bearing 15, steps are carried out to support the input shaft 4 to improve the transmission stability and precision. in , an annular shoulder 4a is integrally formed on an outer side wall of the input shaft 4, a th bearing 15 is positioned between the annular shoulder 4a and the bracket 13, and an inner ring and an outer ring of the th bearing 15 are respectively abutted against the annular shoulder 4a and the leading-in part 13 b. in cooperation with the leading-in part 13b and the annular shoulder 4a, the th bearing 15 is effectively limited in the axial direction to improve the working stability.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

The three-stage helical gear reducer comprises a housing (1) and a housing II (2) which are fixed at , a 2 cavity (3) is formed between the housing (1) and the housing II (2), an input shaft (4), an output shaft (5) and a transmission shaft (6) are arranged in the cavity (3), the input shaft (4) and the output shaft (5) are respectively and rotatably connected with the housing (1) and the housing II (2), the 6 end of the transmission shaft (6) is connected with the output shaft (5) through a second gear reduction mechanism, the transmission shaft II (8) is horizontally arranged between the other end of the transmission shaft (6) and the input shaft (4), the transmission shaft II (8) is respectively and is connected with the input shaft (4) and the transmission shaft () through a second gear reduction mechanism and a third gear reduction mechanism, the transmission shaft II (4) and the transmission shaft ) are characterized in that the housing II (1) and the housing II (2) are axially distributed along the input shaft (4), the cavity (3) is internally provided with a bracket (13) and a 13), the input shaft (13) is fixedly connected with the input shaft (13) through a bracket (13) and the input shaft (13), the input shaft (13) and the tail end of.
2. The three-stage helical gear reducer according to claim 1, wherein a connecting sleeve (14) is further arranged in the cavity (3), the bracket (13) is located between the connecting sleeve (14) and the output shaft (5), the bracket (13) is fixedly connected with the connecting sleeve (14), the connecting sleeve (14) is sleeved outside the input shaft (4), and the connecting sleeve (14) is rotatably connected with the input shaft (4) through an -th bearing (15).
3. The three-stage helical gear reducer according to claim 2, wherein the bracket (13) has a circular arc-shaped lead-in portion (13b), the lead-in portion (13b) and the connecting sleeve (14) are coaxially arranged, the lead-in portion (13b) is inserted into the connecting sleeve (14), and an outer side wall of the lead-in portion (13b) abuts against an inner side wall of the connecting sleeve (14).
4. The three-stage helical gear reducer according to claim 3, wherein the input shaft (4) is rotatably connected with the housing (1) through a second bearing (7), and two ends of the connecting sleeve (14) are respectively pressed against an outer ring of the second bearing (7) and the bracket (13).
5. The three-stage helical gear reducer according to claim 4, wherein the outer side wall of the input shaft (4) is integrally formed with an annular shoulder (4a), the bearing (15) is located between the annular shoulder (4a) and the bracket (13), and the inner ring and the outer ring of the bearing (15) respectively abut against the annular shoulder (4a) and the introduction portion (13 b).