CN210859706U

CN210859706U - Closed planetary transmission wheel-side speed reducer with biaser

Info

Publication number: CN210859706U
Application number: CN201921747836.2U
Authority: CN
Inventors: 毕玉海; 龙江波
Original assignee: Sichuan Bonny Heavy Machinery Co ltd
Current assignee: Sichuan Bonny Heavy Machinery Co ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-06-26
Anticipated expiration: 2029-10-16

Abstract

The utility model relates to a closed planetary transmission wheel-side reducer with a bias device, which comprises a driving device and a planetary reducer, a biaser is arranged between the driving device and the planetary reducer, the biaser comprises a box body, one end of the box body is fixedly butted with the planetary reducer, the other end of the box body is fixedly butted with the driving device, the box body supports a first supporting shaft and a second supporting shaft through a bearing, the second supporting shaft is eccentrically arranged relative to the axial lead of the first supporting shaft, the first supporting shaft is provided with a first driving gear, the second supporting shaft is provided with a first driven gear, the first driving gear is meshed with the first driven gear, an output shaft head at one end of the second supporting shaft extends out of the box body and is circumferentially fixed with the input end of the planetary reducer, one end of the first supporting shaft is provided with a connecting hole for the shaft head of the driving device to extend into and be circumferentially fixed.

Description

Closed planetary transmission wheel-side speed reducer with biaser

Technical Field

The utility model relates to an engineering machine tool, concretely relates to take closed planetary transmission hub reduction gear of biasing ware.

Background

The hub planet speed reducer of conventional engineering machinery slows down and is stretched into in the hub planet speed reducer and direct and motor input end power connection by the spindle nose of motor usually, motor power passes through the planet speed reducer speed reduction back, be connected the output torque by output big ring gear and tire, adopt this kind of structure, the road surface is little apart from the central distance of tire, when the tire passes through the earth stone rare mud road, drive speed reducer and motor may let the rare mud water parcel, can strike with the earth stone on ground simultaneously, thereby make its thermal diffusivity, the trafficability characteristic is not good, seriously influence its working property.

Disclosure of Invention

The utility model aims at prior art not enough, provide a take closed planetary transmission wheel reduction gear of biasing ware, it has improved drive arrangement's ground clearance, has improved its trafficability characteristic, prevents the serious striking of drive arrangement and native stone, has avoided drive arrangement to be wrapped up by muddy water because of being low from the ground distance to its trafficability characteristic, thermal diffusivity have been improved.

The purpose of the utility model is realized like this: the closed planetary transmission hub reduction gear with the biaser comprises a driving device and a planetary reduction gear, wherein the biaser is arranged between the driving device and the planetary reduction gear, the bias device comprises a box body, one end of the box body is fixedly butted with the planetary reducer, the other end of the box body is fixedly butted with the driving device, the box body supports a first supporting shaft and a second supporting shaft through a bearing, the second supporting shaft is eccentrically arranged relative to the axial lead of the first supporting shaft, the first supporting shaft is provided with a first driving gear, the second supporting shaft is provided with a first driven gear, the first driving gear is meshed with the first driven gear, an output shaft head at one end of the second supporting shaft extends out of the box body and is circumferentially fixed with the input end of the planetary reducer, the box body is provided with a through hole for the shaft head of the driving device to extend into, and the part of the shaft head of the driving device extending into the box body is circumferentially fixed with one end of the first supporting shaft.

The planetary reducer comprises an end cover, a small gear ring, a large gear ring and a base body, wherein the end cover, the small gear ring, the large gear ring and the base body are enclosed to form a shell with an open end, an input end shell is supported in the open end of the shell through a bearing, a butt joint surface of the shell and the input end shell is sealed through a floating oil seal, a center hole of the input end shell supports a connecting sleeve, one end of the connecting sleeve is fixed with the output shaft head of a second supporting shaft in the circumferential direction, a center gear shaft is fixed in the circumferential direction at the other end of the connecting sleeve, the other extending end of the center gear shaft is supported on the end cover, a first planetary gear train, a second planetary gear train, a third planetary gear train and a fourth planetary gear train are sequentially arranged in the shell from the end cover end, the first planetary gear train comprises a first planet carrier, a first planetary gear and a first sun. The third planetary gear train comprises a third planet carrier, a third planetary gear and a third sun gear, the fourth planetary gear train comprises a fourth planet carrier, a fourth planetary gear and a fourth sun gear, the central gear shaft sequentially passes through the centers of the first planetary gear train, the second planetary gear train, the third planetary gear train and the fourth planetary gear train, the end of the central gear shaft close to the end cover is fixed with a first sun gear, the center of a first planet carrier of the first planetary gear train is fixed with the second sun gear of the second planetary gear train in the circumferential direction, the first planet gear and the second planet gear are respectively meshed with the small gear ring, the second planet carrier and the third sun gear are fixed in the circumferential direction, the third planet carrier and the fourth sun gear are fixed in the circumferential direction, and the third planetary gear and the fourth planetary gear are meshed with the large gear ring, and the fourth planet carrier and the central hole of the input end shell are circumferentially fixed.

The input end housing is supported within the interior bore of the housing by a pair of back-to-back assembled cylindrical roller bearings.

The end cover, the small gear ring, the large gear ring and the seat body are positioned in pairs through the seam allowances and are connected into an integral structure through connecting bolts which are axially arranged.

The box body supports a first supporting shaft and a second supporting shaft through a rolling bearing, the first supporting shaft and the second supporting shaft are arranged in parallel, and the axis line of the shaft head of the driving device is collinear with the axis line of the first supporting shaft.

One end of the box body is positioned with the end surface of the planetary reducer through the spigot and is fastened, butted and fixed through a bolt, the other end of the box body is positioned with the end surface of the driving device through the spigot and is fastened through a bolt,

the box body comprises a first box plate, a second box plate and a third box plate which are parallel to each other, a first installation cylinder body is connected between the first box plate and the second box plate, a second installation cylinder body is connected between the second box plate and the third box plate, and a connecting flange used for being connected with a driving device is arranged and connected on the end face of the third box plate.

The first driving gear and the first driven gear are straight toothed spur gears.

By adopting the scheme, the driving device has the advantages that power is input into the first driving gear, the first driving gear transmits the power to the meshed second driving gear, the second driving gear transmits the power to the second supporting shaft, the second supporting shaft transmits the power to the planetary reducer, and the power is decelerated by the biaser and the planetary reduction gear trains and then is connected with a tire by the large gear ring and the seat body to output torque. Owing to will drive to arrange the biasing ware between speed reducer and the drive arrangement, adopt above-mentioned utility model, its simple structure, convenient to detach maintain, have increaseed drive arrangement from the central distance of road surface tire, have improved its passing through performance, prevent the serious striking of drive arrangement and soil stone, have avoided drive arrangement to be wrapped up by muddy water because of being low from the ground distance to its trafficability characteristic, thermal diffusivity have been improved.

The invention will be further explained with reference to the drawings and the specific embodiments.

Drawings

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

fig. 2 is a schematic diagram of the internal structure of the biasing device of the present invention.

In the drawings, 1 is a small gear ring, 2 is a first mounting cylinder, 3 is a second supporting shaft, 4 is a first driven gear, 5 is a second box plate, 7 is a first driving gear, 8 is a first supporting shaft, 9 is a first box plate, 10 is a third box plate, 11 is a sun gear shaft, 14 is an end cover, 10a is a connecting sleeve, 2a is a large gear ring, 3a is an output spindle head, 6a is a seat body, 7a is an input end shell, 8a is a connecting hole, a is a driving device, a11 is a first planet carrier, a12 is a first planet gear, a13 is a first sun gear, a21 is a second planet carrier, a22 is a second planet gear, a23 is a second sun gear, a31 is a third planet carrier, a32 is a third planet gear, a33 is a third sun gear, a41 is a third planet carrier, a42 is a fourth planet gear, a43 is a fourth planet gear, b is a sun gear, D is a planetary reducer, e is a connecting flange, h is a floating oil seal, and 15 is a second mounting cylinder.

Detailed Description

Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 2, an embodiment of the enclosed planetary transmission hub reduction gear with an offset device includes a driving device a, a planetary reduction gear b, and an offset device c disposed between the driving device a and the planetary reduction gear b, where the driving device a may be a power machine such as an electric motor, a hydraulic motor, or an internal combustion engine. The biaser c comprises a box body, one end of the box body is positioned with the end face of the planetary reducer b through a spigot D and is fastened, butted and fixed through a bolt, and the other end of the box body is positioned with the end face of the driving device a through the spigot D and is fastened through a bolt. The box body can comprise a first box plate 9, a second box plate 5 and a third box plate 10 which are parallel to each other, a first mounting cylinder 2 is connected between the first box plate 9 and the second box plate 5, a second mounting cylinder is connected between the second box plate 5 and the third box plate, and the first mounting cylinder 2, the first box plate 9 and the second box plate 5 are integrally formed or welded and fixed; the second installation barrel 15, the first installation barrel 2, the first boxboard 9, the second boxboard 5 also can be integrated into one piece or welded fastening, and the third boxboard 10 passes through bolt and 15 fixed connection of second installation barrel, makes things convenient for supporting axle and gear installation, set up the via hole that supplies stretching into of drive arrangement spindle nose on the box, in this embodiment, the via hole terminal surface of third boxboard 10 sets up and connects the flange E that is used for being connected with drive arrangement an, and this flange E sets up the male end location of female end and drive arrangement an terminal surface and fixes through bolted connection. One end of the box body is fixedly butted with the planetary reducer b, and the butted end of the box body is provided with a convex spigot which is positioned with the end face of the planetary reducer b and is fastened through a bolt.

Through first supporting shaft 8 of bearing support, second supporting shaft 3 in the box, the second supporting shaft 3 sets up eccentrically to the axial lead of first supporting shaft 8, the ground clearance of second supporting shaft 3 is first in the input ground clearance of first supporting shaft 8, and first drive gear or second gear can be bevel gear or cylindrical gear, in this embodiment, support first supporting shaft 8, second supporting shaft 3 through antifriction bearing in the box, first supporting shaft 8 and second supporting shaft 3 parallel arrangement, the axial lead of the spindle nose of drive arrangement a and the axial lead collineation of first supporting shaft 8, first driving gear 7, first driven gear 4 are straight tooth cylindrical gear. The improved planetary reducer is characterized in that a first driving gear 7 is arranged on the first supporting shaft 8, a first driven gear 4 is arranged on the second supporting shaft 3, the first driving gear 7 is meshed with the first driven gear 4, an output shaft head 3a at one end of the second supporting shaft 3 extends out of the box body and is circumferentially fixed with the input end of the planetary reducer b, a through hole for the shaft head of the driving device to extend into is formed in the box body, and the part of the shaft head of the driving device extending into the box body is circumferentially fixed with one end of the first supporting shaft. In this embodiment, the driving device spindle nose stretches into from the centre bore of the female tang of flange E, the one end of first supporting shaft sets up the connecting hole 8a that supplies the driving device spindle nose to stretch into and circumference is fixed, and this connecting hole 8a can be with the splined hole of driving device a's spindle nose splined connection.

The planetary reducer b comprises a shell with one end opened by enclosing of an end cover 14, a small gear ring 1, a large gear ring 2a and a base body 6a, wherein the end cover 14, the small gear ring 1, the large gear ring 2a and the base body 6a are positioned in pairs through a seam allowance D and are connected into an integral structure through axially arranged connecting bolts. An input end shell 7a is supported in the open end of the housing through a bearing, and in the embodiment, the input end shell 7a is supported in the inner hole of the base body 6a through a pair of back-to-back combined cylindrical roller bearings. The butt joint surface of the shell and the input end shell 7a is sealed through a floating oil seal h, a connecting sleeve 10a is supported by a central hole of the input end shell 7a, one end of the connecting sleeve 10a is circumferentially fixed with an output shaft head 3a of a second supporting shaft 3, a central gear shaft 11 is circumferentially fixed at the other end of the connecting sleeve 10a, the other extending end of the central gear shaft 11 is supported on an end cover 14, a first planetary gear train, a second planetary gear train, a third planetary gear train and a fourth planetary gear train are sequentially arranged in the shell from the end cover 14, the first planetary gear train comprises a first planet carrier a11, a first planet gear a12 and a first sun gear a13, and the second planetary gear train comprises a second planet carrier a21, a second planet gear a22 and a second sun gear a 23. The third planetary gear train comprises a third planet carrier a31, a third planet gear a32 and a third sun gear a33, the fourth planetary gear train comprises a fourth planet carrier a41, a fourth planet gear a42 and a fourth sun gear a43, the sun gear shaft 11 sequentially passes through the centers of the first planetary gear train, the second planetary gear train, the third planetary gear train and the fourth planetary gear train, the sun gear shaft 11 is fixed with the first sun gear a13 close to the end head of the end cover, the center of the first planet carrier a11 of the first planetary gear train is fixed with the second sun gear a23 of the second planetary gear train in the circumferential direction, and the circumferential fixation can be realized through pins, flat keys or splines. The first planet gear a12 and the second planet gear a22 are respectively meshed with a small gear ring, the second planet carrier a21 and the third sun gear a33 are circumferentially fixed, the third planet carrier a31 and the fourth sun gear a43 are circumferentially fixed, the third planet gear a32 and the fourth planet gear a42 are meshed with a large gear ring, and the fourth planet carrier a41 and the central hole of the input end shell 7a are circumferentially fixed.

By adopting the scheme, during assembly, because the shells of the planetary reducer and the biaser are mutually independent, the planetary reducer, the biaser and the driving device can be partially assembled firstly, finally, the planetary reducer and the biaser are assembled, the driving device and the biaser are assembled to finish the assembly, when power is transmitted, the power of the driving device is input into a first driving gear, the first driving gear transmits the power to a meshed second driving gear, the second driving gear transmits the power to a second supporting shaft 3, the second supporting shaft 3 transmits the power to a planetary reducer b, the power is transmitted to a connecting sleeve 10a through a biaser c, the connecting sleeve 10a transmits the power to a central gear shaft 11 to drive a first sun gear a13, and after the speed is reduced through a plurality of planetary gear reduction systems, the power device has larger torque for driving tires, the large gear ring 2a and the base body 6a are connected with a tire to output torque. The biaser c is arranged between the driving speed reducer and the driving device a, so that the distance between the driving device a and the center of a road tire is increased, the passing performance of the driving device a is improved, the driving device a is prevented from being seriously impacted with earth and stones, the driving device a is prevented from being wrapped by muddy water due to the low distance between the driving device a and the ground, and the passing performance and the heat dissipation performance of the driving device a are improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and it is obvious that those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a take closed planet transmission hub reduction gear of biasing ware, includes drive arrangement (a), planetary reducer (b), its characterized in that: a biaser (c) is arranged between the driving device (a) and the planetary reducer (b), the biaser (c) comprises a box body, one end of the box body is fixedly butted with the planetary reducer (b), the other end of the box body is fixedly butted with the driving device (a), a first supporting shaft (8) and a second supporting shaft (3) are supported in the box body through bearings, the second supporting shaft (3) is eccentrically arranged relative to the axial lead of the first supporting shaft (8), a first driving gear (7) is arranged on the first supporting shaft (8), a first driven gear (4) is arranged on the second supporting shaft (3), the first driving gear (7) is meshed with the first driven gear (4), an output shaft head (3a) at one end of the second supporting shaft (3) extends out of the box body and is circumferentially fixed with the input end of the planetary reducer (b), the box body is provided with a through hole for the shaft head of the driving device to extend into, and the part of the shaft head of the driving device, which extends into the box body, is circumferentially fixed with one end of the first supporting shaft.

2. The enclosed planetary drive wheel-side reducer with biaser of claim 1, wherein: the planetary reducer (b) comprises a shell with one open end surrounded by an end cover (14), a small gear ring (1), a large gear ring (2a) and a base body (6a), an input end shell (7a) is supported in the open end of the shell through a bearing, the butt joint surface of the shell and the input end shell (7a) is sealed through a floating oil seal (h), a central hole of the input end shell (7a) supports a connecting sleeve (10a), one end of the connecting sleeve (10a) is circumferentially fixed with an output shaft head (3a) of a second supporting shaft (3), the other end of the connecting sleeve (10a) is circumferentially fixed with a central gear shaft (11), the other extending end of the central gear shaft (11) is supported on the end cover (14), and a first planetary gear train, a second planetary gear train, a third planetary gear train and a fourth planetary gear train are sequentially arranged in the shell from the end cover (14), the first planetary gear train comprises a first planet carrier (a11), a first planet gear (a12) and a first sun gear (a13), the second planetary gear train comprises a second planet carrier (a21), a second planet gear (a22) and a second sun gear (a23), the third planetary gear train comprises a third planet carrier (a31), a third planet gear (a32) and a third sun gear (a33), the fourth planetary gear train comprises a fourth planet carrier (a41), a fourth planet gear (a42) and a fourth sun gear (a43), the central gear shaft (11) sequentially passes through the centers of the first, second, third and fourth planetary gear trains, the central gear shaft (11) fixes the first sun gear (a13) close to the end head of the end cover, the center of the first planet carrier (a11) of the first planetary gear train is circumferentially fixed with the second sun gear (a23) of the second planetary gear train, the first planet gear (a12) and the second planet gear (a22) are respectively meshed with a small gear ring, the second planet carrier (a21) and the third sun gear (a33) are circumferentially fixed, the third planet carrier (a31) and the fourth sun gear (a43) are circumferentially fixed, the third planet gear (a32) and the fourth planet gear (a42) are meshed with a large gear ring, and the fourth planet carrier (a41) and a central hole of the input end shell (7a) are circumferentially fixed.

3. The enclosed planetary drive wheel-side reducer with biaser of claim 2, wherein: the input end shell (7a) is supported in the inner hole of the base body (6a) through a pair of back-to-back combined cylindrical roller bearings.

4. The enclosed planetary drive wheel-side reducer with biaser of claim 2, wherein: the end cover (14), the small gear ring (1), the large gear ring (2a) and the seat body (6a) are positioned in pairs through the seam allowance (D) and are connected into an integral structure through connecting bolts which are axially arranged.

5. The enclosed planetary reduction gear with biaser according to claim 1 or 2, wherein: the first supporting shaft (8) and the second supporting shaft (3) are arranged in parallel, and the shaft axis of the shaft head of the driving device (a) is collinear with the shaft axis of the first supporting shaft (8).

6. The enclosed planetary reduction gear with biaser according to claim 1 or 2, wherein: one end of the box body is positioned with the end face of the planetary reducer (b) through the spigot (D) and is fastened, butted and fixed through a bolt, and the other end of the box body is positioned with the end face of the driving device (a) through the spigot (D) and is fastened through a bolt.

7. The enclosed planetary reduction gear with biaser according to claim 1 or 2, wherein: the box is including first boxboard (9), second boxboard (5), third boxboard (10) that are parallel to each other, be connected first installation barrel (2) between first boxboard (9) and second boxboard (5), be connected second installation barrel between second boxboard (5) and the third boxboard, the terminal surface setting of third boxboard (10) is connected and is used for flange (E) be connected with drive arrangement (a).

8. The enclosed planetary reduction gear with biaser according to claim 1 or 2, wherein: the first driving gear (7) and the first driven gear (4) are straight-tooth cylindrical gears.