CN112196952A

CN112196952A - Lifting unit gear box with self-adaptive centering bearing seat

Info

Publication number: CN112196952A
Application number: CN202011145149.0A
Authority: CN
Inventors: 刘振庆; 刘磊; 陈建新; 郭亚玲; 胡宇浩; 孙志强; 李响
Original assignee: Jiangyin Gearbox Manufacturing Co ltd
Current assignee: Jiangyin Gearbox Manufacturing Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-01-08

Abstract

The invention relates to a lifting unit gear box with a bearing seat self-adaptive centering function, which comprises a primary planet meshing gear train, a secondary planet meshing gear train, a tertiary planet meshing gear train, a four-stage planet meshing gear train input shaft and an output gear shaft, wherein the first planet meshing gear train is arranged on the input shaft; the front end of the output gear shaft is provided with a second bearing, the rear end of the output gear shaft is connected with a first bearing, the first bearing is arranged on a rear bearing seat, the front end of the rear bearing seat is provided with a second through cover, the rear end of the rear bearing seat is provided with a blank cap, a gap is arranged between the first bearing and the second through cover, and an adjusting ring is arranged between the first bearing and the blank cap; and a fourth spherical top is arranged between the four-stage sun gear and the output gear shaft, a pressing plate is arranged on the front end face of the output gear shaft close to the four-stage sun gear, and the pressing plate is elastically connected with the front end face of the four-stage sun gear. The bearing seat has the advantages of large compensation angle, large adjustable space gap amount, capability of being adjusted in all directions, adaptation to the mounting rack with height difference, firm mounting, large bearing capacity, avoidance of use problem caused by instable mounting, and improvement of safety performance.

Description

Lifting unit gear box with self-adaptive centering bearing seat

Technical Field

The invention relates to the technical field of marine platform lifting units, in particular to a lifting unit gear box with a bearing seat self-adaptive centering function.

Background

The self-elevating platform consists of a platform main body, pile legs and a lifting unit, and the platform is lifted along the pile legs by the lifting unit. When the self-elevating platform works, the pile legs are lowered to be inserted into the seabed, and the platform is lifted to a safe working height away from the sea surface, so that the pile legs cannot sink when the platform meets storms. After completion, the platform is lowered to the sea surface, the pile legs are pulled out and lifted completely, and the whole platform floats on the sea surface and is dragged to a new well position by the dragging wheel. The lifting unit is a key part in a lifting system of the self-elevating platform, and common lifting units comprise a rack and pinion type lifting unit and a hydraulic oil cylinder lifting unit, wherein the rack and pinion type lifting unit is widely applied due to high lifting speed and simple operation.

The rack and pinion type lifting unit is used as an important bearing part, and must support a platform body and related equipment and bear external load under various working conditions, and is in a heavy load bearing state for a long time, so that the safety performance of the rack and pinion type lifting unit is an important factor related to the safety performance of the whole platform.

The problem of plane unevenness exists in the mounting platform of lift unit gear box, and there is the difference in height in the mounting bracket during the installation for lift unit gear box installation is insecure, influences the use, leads to the dangerous condition that the part drops even, consequently urgently needs to solve this problem.

Disclosure of Invention

The invention aims to overcome the defects and provide the lifting unit gear box with the bearing seat self-adaptive centering, which is adaptive to the mounting frame in all directions, has a compact and light structure and improves the bearing capacity and the safety.

The purpose of the invention is realized as follows:

a lifting unit gear box with a bearing seat self-adaptive centering function comprises a primary planet carrier, a primary sun gear, a primary planet wheel and an inner gear ring to form a primary planet meshing gear train, a secondary planet carrier, a secondary sun gear, a secondary planet wheel and an inner gear ring to form a secondary planet meshing gear train, a tertiary planet carrier, a tertiary sun gear, a tertiary planet wheel and a tertiary inner gear ring to form a tertiary planet meshing gear train, a quaternary planet carrier, a quaternary sun gear, a quaternary planet wheel and a quaternary inner gear ring to form a quaternary planet meshing gear train, an input shaft and an output gear shaft; the front end of the output gear shaft is provided with a second bearing, the rear end of the output gear shaft is connected with a first bearing, the first bearing is arranged on a rear bearing seat, the front end of the rear bearing seat is provided with a second through cover, the rear end of the rear bearing seat is provided with a blank cap, a gap is arranged between the first bearing and the second through cover, and an adjusting ring is arranged between the first bearing and the blank cap; set up first dome between one-level sun gear and the second grade sun gear, set up the second dome between second grade sun gear and the tertiary sun gear, set up the third dome between tertiary sun gear and the level four sun gear, set up the fourth dome between level four sun gear and the output gear axle, the output gear axle is close to and is equipped with the clamp plate on the preceding terminal surface of level four sun gear, the preceding terminal surface elastic connection of clamp plate and level four sun gear, the contact surface of fourth dome and clamp plate adopts the nitrogenize processing.

The utility model provides a lift unit gear box of bearing frame self-adaptation centering, the input shaft passes through the one-level sun gear of internal gear connection one-level planet meshing train, and the internal gear hookup secondary sun gear of one-level planet carrier transmits one-level power to secondary planetary gear train, and the internal gear hookup tertiary sun gear of secondary planet carrier, the internal gear hookup level four sun gear of tertiary planet carrier, the internal spline of the level four planet carrier of level four planet meshing train links to each other with output gear axle.

A lifting unit gear box with a bearing seat self-adaptive centering function is characterized in that a primary planet wheel is mounted on a primary planet carrier through a primary mandrel, and a distance ring is sleeved on the primary mandrel; the secondary planet gear is sleeved on the secondary planet carrier through a secondary mandrel, and a distance ring is sleeved on the secondary mandrel; the third-stage planet gear is sleeved on the third-stage planet carrier through a third-stage mandrel, and a distance ring is sleeved on the third-stage mandrel; the four-stage planet gear is sleeved on the four-stage planet carrier through a four-stage mandrel, and a distance ring is sleeved on the four-stage mandrel.

The utility model provides a lift unit gear box of bearing frame self-adaptation centering, the rear end face of output gear shaft is equipped with the axle head apron, the front end of rear bearing frame sets up the second and passes through the lid sealed, and the rear end sets up the stifle sealed, stifle, rear bearing frame and second pass through and adopt long bolt to link up fixed connection between the lid.

The utility model provides a lifting unit gear box of bearing frame self-adaptation centering, one-level sun gear, second grade sun gear, tertiary sun gear and level four sun gear are outer tooth integrated into one piece, and the ring gear integration, the internal tooth of spline housing or planet carrier with it meshing are the short tooth that lacks the top.

Compared with the prior art, the invention has the beneficial effects that:

(1) the large-clearance bearing is adopted, the adjusting ring is arranged between the first bearing on the left side and the front end blank cap, and the gap is arranged between the adjusting ring and the rear end transparent cap, so that the bearing seat has a large compensation angle and large adjustable gap amount, can be adjusted in all directions, is suitable for the mounting frame with the height difference, is firm to mount, avoids the use problem caused by instable mounting, and improves the safety performance.

(2) According to the invention, a structural form of a spherical top compression plate is adopted between the four-stage sun gear and the output gear shaft, the original snap spring structure is replaced, the snap spring is adopted for clamping originally, but the gap of the end surface of the output gear shaft is inconvenient to adjust, and the snap spring is easy to fall off under stress; and the contact surface of the ball top and the pressure plate is subjected to nitriding treatment, so that the wear resistance and the strength are improved, and the service life of the ball top is prolonged.

(3) The outer teeth of the sun gear are integrally formed, the inner gear is connected with the planet carrier in a short-tooth type, the tops of the inner teeth are short-tooth inner teeth which are meshed with the outer teeth, and the outer ring does not need to be additionally provided with splines and tool withdrawal grooves, so that the space is saved, the axial size is shortened, the structure is compact, and the miniaturization and the light weight of the speed reducer are realized.

(4) The two sides of the bearing seat are communicated by the long bolts, so that the space is saved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partial view of fig. 1 taken along direction K.

Fig. 3 is a schematic view of the installation of the present invention.

Fig. 4 is a schematic cross-sectional view of the present invention.

Fig. 5 is a schematic cross-sectional view of a sun gear of the present invention.

Wherein:

the device comprises a front machine body 1, a middle machine body 2, a rear machine body 3, an input bearing seat 4, a first-stage sun gear 5, a first-stage planet gear 6, a first-stage planet carrier 7, a first-stage mandrel 8, a first spherical top 9, a second-stage sun gear 10, a second-stage planet gear 11, a second-stage planet carrier 12, a second-stage mandrel 13, a second spherical top 14, a second-stage inner gear ring 15, a third-stage sun gear 16, a third-stage planet gear 17, a third-stage planet carrier 18, a third-stage mandrel 19, a third-stage inner gear ring 20, a fourth-stage inner gear ring 21, a fourth-stage sun gear 22, a fourth-stage planet gear 23, a fourth-stage planet carrier 24, a fourth-stage mandrel 25, a fourth-stage spherical top 26, a fourth-stage inner gear ring 27, a pressure plate 28, a first transparent cover 29.

Detailed Description

For a better understanding of the technical aspects of the present invention, reference will now be made in detail to the accompanying drawings. It should be understood that the following specific examples are not intended to limit the embodiments of the present invention, but are merely exemplary embodiments of the present invention. It should be noted that the description of the positional relationship of the components, such as the component a is located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.

Example 1:

referring to fig. 1-5, fig. 1 is a schematic structural diagram of a lifting unit gear box with self-adaptive centering of a bearing block. As shown in the figures, the lifting unit gear box with the self-adaptive centering bearing seat comprises a front machine body 1, a middle machine body 2, a rear machine body 3, an input shaft, a first-stage sun gear 5, a second-stage sun gear 10, a third-stage sun gear 16, a fourth-stage sun gear 22, a fourth ball top 26, a pressing plate 28, an output gear shaft 30 and a rear bearing seat 31, wherein the first-stage sun gear 5, the second-stage sun gear 10 and the third-stage sun gear 16 are arranged in the front machine body 1, the fourth-stage sun gear 22 is arranged in the middle machine body 2, a second bearing 33 and the front end of the output gear shaft 30 are arranged in the rear machine body 3, the rear end of the output gear shaft 30 is connected with a first bearing 32, and the first.

The input shaft is connected with a motor or a hydraulic motor and fixed on an input bearing seat 4, the input shaft is meshed with a primary planet wheel 6 through a primary sun wheel 5 fixedly connected with a spline sleeve, the primary planet wheel 6 is arranged on a primary planet carrier 7 through a primary mandrel 8, and a distance ring is sleeved on the primary mandrel 8;

the primary planet gear 6 and the secondary planet gear 11 are connected through a shared secondary inner gear ring 15; a secondary sun gear 10 is fixedly connected to the primary planet carrier 7, the secondary sun gear 10 is meshed with a secondary planet gear 11, the secondary planet gear 11 is sleeved on a secondary planet carrier 12 through a secondary mandrel 13, and a distance ring is sleeved on the secondary mandrel 13;

the secondary planet gears 11 and the tertiary planet gears 17 are connected through a common tertiary inner gear ring 21; a third-stage sun gear 16 is fixedly connected to the second-stage planet carrier 12, the third-stage sun gear 16 is meshed with a third-stage planet gear 17, the third-stage planet gear 17 is sleeved on a third-stage planet carrier 18 through a third-stage mandrel 19, and a distance ring is sleeved on the third-stage mandrel 19;

the three-stage planet gears 17 are connected with the four-stage planet gears 23 through a common four-stage inner gear ring 27; the third-stage planet carrier 18 is fixedly connected with a fourth-stage sun gear 22, the fourth-stage sun gear 22 is meshed with a fourth-stage planet gear 23, the fourth-stage planet gear 23 is sleeved on a fourth-stage planet carrier 24 through a fourth-stage mandrel 25, and a distance ring is sleeved on the fourth-stage mandrel 25;

the four-stage carrier 24 is flange-coupled to the output gear shaft 30.

Set up first bulb top 9 between one-level sun gear 5 and the second grade sun gear 10, set up second bulb top 14 between second grade sun gear 10 and the tertiary sun gear 16, set up third bulb top 20 between tertiary sun gear 16 and the level four sun gear 22, set up fourth bulb top 26 between level four sun gear 22 and the output gear axle 30, be equipped with clamp plate 28 on the preceding terminal surface that output gear axle 30 is close to level four sun gear 22, clamp plate 28 both ends adopt the screw fixation, leave the clearance, the contact surface of fourth bulb top 26 and clamp plate 28 adopts the nitrogenize processing.

A second bearing 33 is arranged between the output gear shaft 30 and the rear machine body 3, a first through cover 29 is arranged on the rear machine body 3 for sealing, a shaft end cover plate 36 is arranged on the rear end face of the output gear shaft 30, the rear end of the output gear shaft 30 is connected with a first bearing 32, the first bearing 32 is arranged on a rear bearing seat 31, a second through cover 34 is arranged at the front end of the rear bearing seat 31 for sealing, a blank cover 37 is arranged at the rear end for sealing, a gap is arranged between the first bearing 32 and the second through cover 34, and an adjusting ring 35 is arranged between the blank cover 37 and the second through cover 34.

The blank cap 37, the rear bearing seat 31 and the second transparent cover 34 are fixedly connected by long bolts in a penetrating way.

One-level sun gear 5, second grade sun gear 10, tertiary sun gear 16 and level four sun gear 22 are outer tooth integrated into one piece, and the ring gear integration, the internal tooth of the spline housing or the planet carrier with it meshing are the short tooth that lacks the top, if: the first-stage sun gear 5 is connected with the input shaft through a spline housing, and the inner teeth of the spline housing are meshed with the outer teeth of the first-stage sun gear 5 to form short-tooth inner teeth.

The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. A lifting unit gear box with a bearing seat self-adaptive centering function comprises a primary planet carrier, a primary sun gear, a primary planet wheel and an inner gear ring to form a primary planet meshing gear train, a secondary planet carrier, a secondary sun gear, a secondary planet wheel and an inner gear ring to form a secondary planet meshing gear train, a tertiary planet carrier, a tertiary sun gear, a tertiary planet wheel and a tertiary inner gear ring to form a tertiary planet meshing gear train, a quaternary planet carrier, a quaternary sun gear, a quaternary planet wheel and a quaternary inner gear ring to form a quaternary planet meshing gear train, an input shaft and an output gear shaft; the method is characterized in that: the front end of the output gear shaft is provided with a second bearing, the rear end of the output gear shaft is connected with a first bearing, the first bearing is arranged on a rear bearing seat, the front end of the rear bearing seat is provided with a second through cover, the rear end of the rear bearing seat is provided with a blank cap, a gap is arranged between the first bearing and the second through cover, and an adjusting ring is arranged between the first bearing and the blank cap; set up first dome between one-level sun gear and the second grade sun gear, set up the second dome between second grade sun gear and the tertiary sun gear, set up the third dome between tertiary sun gear and the level four sun gear, set up the fourth dome between level four sun gear and the output gear axle, the output gear axle is close to and is equipped with the clamp plate on the preceding terminal surface of level four sun gear, the preceding terminal surface elastic connection of clamp plate and level four sun gear, the contact surface of fourth dome and clamp plate adopts the nitrogenize processing.

2. The lift unit gearbox of adaptive centering of bearing blocks of claim 1, wherein: the input shaft is connected with a first-stage sun gear of the first-stage planetary gear train through an internal gear, the internal gear of the first-stage planetary carrier is connected with a second-stage sun gear, the first-stage power is transmitted to the second-stage planetary gear train, the internal gear of the second-stage planetary carrier is connected with a third-stage sun gear, the internal gear of the third-stage planetary carrier is connected with a fourth-stage sun gear, and an internal spline of the fourth-stage planetary carrier of the fourth-stage planetary.

3. The lift unit gearbox of adaptive centering of bearing blocks of claim 1, wherein: the primary planet gear is arranged on the primary planet carrier through a primary mandrel, and a distance ring is sleeved on the primary mandrel; the secondary planet gear is sleeved on the secondary planet carrier through a secondary mandrel, and a distance ring is sleeved on the secondary mandrel; the third-stage planet gear is sleeved on the third-stage planet carrier through a third-stage mandrel, and a distance ring is sleeved on the third-stage mandrel; the four-stage planet gear is sleeved on the four-stage planet carrier through a four-stage mandrel, and a distance ring is sleeved on the four-stage mandrel.

4. The lift unit gearbox of adaptive centering of bearing blocks of claim 1, wherein: the rear end face of the output gear shaft is provided with a shaft end cover plate, the front end of the rear bearing seat is provided with a second transparent cover seal, the rear end of the rear bearing seat is provided with a blank cover seal, and the blank cover, the rear bearing seat and the second transparent cover are fixedly connected in a penetrating mode through long bolts.

5. The lift unit gearbox of adaptive centering of bearing blocks of claim 1, wherein: the first-stage sun gear, the second-stage sun gear, the third-stage sun gear and the fourth-stage sun gear are all integrally formed by external teeth, the gear rings are integrated, and internal teeth of spline sleeves or planet carriers meshed with the gear rings are short teeth without tops.