CN112413059A

CN112413059A - Door descending speed reducer for ship

Info

Publication number: CN112413059A
Application number: CN202011495216.1A
Authority: CN
Inventors: 张玉圣
Original assignee: Jiangsu Tailong Decelerator Machinery Co Ltd
Current assignee: Jiangsu Tailong Decelerator Machinery Co Ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-02-26
Anticipated expiration: 2040-12-17
Also published as: CN112413059B

Abstract

The invention relates to the field of speed reducers, and provides a marine door drop speed reducer. The two input modes are vertical to each other, so that a proper input mode can be selected on site conveniently, the worm gear input can be used as manual input, and meanwhile, self-locking during power failure can be ensured, and safety accidents are avoided; the invention has compact structure, realizes two speed ratio lifting by double input and has high safety factor.

Description

Door descending speed reducer for ship

Technical Field

The invention relates to the field of speed reducers, in particular to a marine door descending speed reducer.

Background

The doors on ships are generally of steel structure, and the door leaves in partial positions have larger volume and weight. The opening of the door leaf usually requires the driving of a speed reducer. For a lifting door, if the power is suddenly cut off or a speed reducer fails in the lifting process, the door leaf is easy to fall down, so that safety accidents occur. The locking mechanism of partial speed reducer installation, the problem that the door leaf dropped is solved, but the door leaf is in the unable continuation of fixed position and opens or close.

Disclosure of Invention

In order to solve the potential safety hazard caused by the problems of power failure and the like in the opening or closing process of the marine door leaf in the prior art and the defect that the marine door leaf cannot continuously work under the condition of power failure caused by single input, the invention aims to provide a marine door-down speed reducer with reverse rotation prevention and double input.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

the marine door drop speed reducer comprises a box body, wherein a first input shaft, a second input shaft, an intermediate shaft and an output shaft are supported in the box body through bearings, a worm wheel, a planet carrier, a sun wheel and a planet carrier gear are mounted on the intermediate shaft, the worm wheel and the sun wheel are fixedly mounted on the intermediate shaft, the planet carrier and the planet carrier gear are rotatably supported on the intermediate shaft through the bearings, and an outer gear ring and an inner gear ring are machined on the planet carrier; the first input shaft is a worm, and the worm is in meshing transmission with a worm wheel; the second input shaft is perpendicular to the first input shaft, install the pinion on the second input shaft, the external tooth meshing transmission of pinion and planet carrier, install a plurality of planet wheels between planet carrier and planet carrier gear, the warp bearing rotational bearing of the pivot of planet wheel is in planet carrier gear, and planet wheel meshes sun gear and ring gear simultaneously, install output gear on the output shaft, planet carrier gear and output gear meshing transmission.

Furthermore, the input end of the worm is provided with a connecting inner hole, and a key groove is processed in the connecting inner hole.

Furthermore, a flange plate is installed on the outer side box body of the extending end of the worm, and a sealing ring is installed between the inner ring of the flange plate and the worm.

After the technical scheme is adopted, the invention has the beneficial effects that: the technical scheme has two input modes of worm gear transmission and planetary transmission, the two input shafts are mutually vertical, so that a proper input mode can be conveniently selected on site, the worm gear input can be used as manual input, and meanwhile, the self-locking during power failure can be ensured, and safety accidents are avoided; the invention has compact structure, realizes two speed ratio lifting by double input and has high safety factor.

Drawings

FIG. 1 is a front view of the present invention;

fig. 2 is a cross-sectional view of the present invention.

Detailed Description

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings:

as shown in the figure, the marine door-down speed reducer comprises a box body 1, wherein a first input shaft 2, a second input shaft 3, an intermediate shaft 4 and an output shaft 5 are supported in the box body 1 through bearings. The first input shaft 2 is a worm shaft, the second input shaft 3 is a pinion shaft, the second input shaft 3 is parallel to the intermediate shaft 4 and the output shaft 5, and the first input shaft 2 is perpendicular to the intermediate shaft 4. An axial connecting inner hole 6 is processed at the input end of the first input shaft 2, and a key groove is processed in the connecting inner hole. And a flange 7 is arranged on an outer box body of the extending end of the first input shaft 2, the flange 7 is used for mounting an input motor, and a sealing ring is arranged between the inner ring of the flange 7 and the first input shaft 2.

A worm wheel 8, a planet carrier 9, a sun wheel 10 and a planet carrier gear 11 are mounted on the intermediate shaft 4, the worm wheel 8 and the sun wheel 10 are fixedly mounted on the intermediate shaft 4, the planet carrier 9 and the planet carrier gear 11 are rotatably supported on the intermediate shaft 4 through bearings, the planet carrier 9 is mounted in the middle of the intermediate shaft 4, the planet carrier gear 11 and the worm wheel 8 are distributed on two sides of the planet carrier 9, and an outer gear ring 12 and an inner gear ring 13 are processed on the planet carrier 9; the worm of the first input shaft 2 is in meshed transmission with the worm wheel 8; the pinion of the second input shaft 3 is in meshing transmission with the external teeth 12 of the planet carrier 9, a plurality of planet wheels 14 are arranged between the planet carrier 9 and the planet carrier gear 11, a rotating shaft 15 of each planet wheel 14 is rotatably supported on a circle of axial inner hole of the planet carrier gear 11 through a bearing, the planet wheels 14 are simultaneously meshed with the sun wheel 10 and the inner gear ring 13, the output shaft 5 is provided with an output gear 16, and the planet carrier gear 11 is in meshing transmission with the output gear 16.

The working principle of the technical scheme is as follows: when the first input shaft 2 inputs, the worm is meshed with the worm wheel 8 for transmission, the worm wheel 8 drives the intermediate shaft 4 to rotate, the sun wheel 10 on the intermediate shaft 4 is meshed with the planet wheel 14, the planet wheel 14 rotates in a planetary mode between the sun wheel 10 and the inner gear ring 13, the rotating shaft 15 of the planet wheel 14 drives the planet carrier gear 11 to rotate, and the planet carrier gear 11 is meshed with the output gear 16 to drive the output shaft 5 to output. When the second input shaft 3 is input, the pinion is meshed with the outer gear ring 12 of the planet carrier 9, the planet carrier 9 drives the planet wheel 14 to rotate, the planet wheel 14 performs planetary motion between the inner gear ring 13 and the sun gear 10, the rotating shaft 15 of the planet wheel 14 drives the planet carrier gear 11 to rotate, and the planet carrier gear 11 is meshed with the output gear 16 to drive the output shaft 5 to output. When the first and

second input shafts

2,3 are simultaneously input, because the planet carrier 9 and the planet carrier gear 11 are both rotatably supported on the intermediate shaft, the two inputs can be superposed to form an output. When the speed reducer is powered off, the worm and gear mechanism is self-locked, the door is prevented from continuously falling down, a handle can be installed on one input shaft, and the door leaf can be manually opened or closed.

Claims

1. The marine door drop speed reducer comprises a box body, wherein a first input shaft, a second input shaft, an intermediate shaft and an output shaft are supported in the box body through bearings, and the marine door drop speed reducer is characterized in that a worm gear, a planet carrier, a sun gear and a planet carrier gear are mounted on the intermediate shaft; the first input shaft is a worm, and the worm is in meshing transmission with a worm wheel; the second input shaft is perpendicular to the first input shaft, install the pinion on the second input shaft, the external tooth meshing transmission of pinion and planet carrier, install a plurality of planet wheels between planet carrier and planet carrier gear, the warp bearing rotational bearing of the pivot of planet wheel is in planet carrier gear, and planet wheel meshes sun gear and ring gear simultaneously, install output gear on the output shaft, planet carrier gear and output gear meshing transmission.

2. The marine door drop reducer according to claim 1, wherein the input end of the worm is provided with a connecting inner hole, and a key groove is processed in the connecting inner hole.

3. The marine door drop reducer according to claim 1, wherein a flange is mounted on an outer box body of the extending end of the worm, and a sealing ring is mounted between an inner ring of the flange and the worm.