CN205099230U

CN205099230U - Luffing mechanism

Info

Publication number: CN205099230U
Application number: CN201520298457.5U
Authority: CN
Inventors: 陈强
Original assignee: Quanzhou Baiyuan Heavy Industry Machinery Co Ltd
Current assignee: Quanzhou Baiyuan Heavy Industry Machinery Co Ltd
Priority date: 2015-05-11
Filing date: 2015-05-11
Publication date: 2016-03-23
Anticipated expiration: 2025-05-11

Abstract

The utility model provides a luffing mechanism of silence, including the reduction gear, with reduction gear input shaft's motor and with the reel of gearbox output hub connection, the epaxial cover of gearbox output is equipped with the external tooth axle sleeve, be equipped with the ring gear on the reel, external tooth axle sleeve endotheca meshes on the middle part shaft hole of ring gear and with the ring gear, the reel can slide for the external tooth axle sleeve, the ring gear both sides all are equipped with sealed retaining ring, and two sealed retaining rings form confined space with the engaging piece free accommodation of external tooth axle sleeve and ring gear, are equipped with intercommunication confined space's grease fitting on the ring gear, the utility model discloses a reduction gear and reel pass through ring gear and the meshing of external tooth axle sleeve, and the reel can slide for the external tooth axle sleeve, and it has certain drunkenness surplus to make between reel and the gearbox output axle, reduce the drunkenness and reduce the transmission noise to the influence of meshing the position, the meshing position seals up in the confined space who has lubricating oil, improves lubricated effect.

Description

Luffing mechanism

Technical field

The utility model relates to hoisting crane technical field, and what especially relate to is a kind of luffing mechanism of hoisting crane.

Background technology

The retarder of general variable amplitude mechanism for crane and the connection mode of reel are that reducer output shaft and reel roll shaft are all arranged with external gear, and two external tooths engage each other.But owing to pullling reel at diverse location in the variable amplitude rope serving process on reel in real work, reel ends is stressed very large, and play, cause the noise at retarder and reel engagement position very large, two engaging gear wearing and tearing are very fast.

Utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of quiet luffing mechanism.

For achieving the above object, technical solution of the present utility model is: luffing mechanism, the reel comprising retarder, the motor be connected with reducer input shaft and be connected with reducer output shaft, described reducer output shaft is arranged with externality shaft, described reel is provided with internally toothed annulus, the middle part axis hole being placed on internally toothed annulus in described externality shaft engages with internally toothed annulus, and described reel can slide relative to externality shaft; Described internally toothed annulus both sides are equipped with Sealing shield ring, and the engaging piece of externality shaft and internally toothed annulus is encased formation seal cavity by two Sealing shield rings, and internally toothed annulus is provided with the lubricating nipple in communication seals space.

Preferably, described reducer input shaft end is provided with the internal tooth half a coupler of band internal tooth, and the rotating shaft of described motor is provided with the external tooth half a coupler of band external tooth, and described external tooth half a coupler is slidably sheathed with in internal tooth half a coupler.

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: retarder of the present utility model and reel are by internally toothed annulus and externality shaft engagement, reel can slide relative to externality shaft, make between reel and reducer output shaft, there is certain play surplus, reduce the impact of play on engagement position and reduce drive noise; Engagement position is sealed in the seal cavity of lubricating oil, improves lubricant effect, can effective noise reduction function through actual product contrast; Reducer input shaft is slidably connected with external tooth half a coupler by internal tooth half a coupler with motor, has play surplus, can reduce noise.

Accompanying drawing explanation

Fig. 1 is STRUCTURE DECOMPOSITION figure of the present utility model;

Fig. 2 is the birds-eye view schematic diagram of Fig. 1;

Fig. 3 is the cutaway view of A-A position in Fig. 2;

Fig. 4 is the cutaway view of B-B position in Fig. 2.

Main Reference Numerals illustrates:

Motor 1; Retarder 2; Reel 3; Embrace barrel 3; External tooth half a coupler 11; Reducer output shaft 21; External tooth sleeve pipe 22; Reducer input shaft 23; Internal tooth half a coupler 24; Sealing shield ring 31; Lubricating nipple 32; Internally toothed annulus 33.

Detailed description of the invention

The utility model is further illustrated below in conjunction with the drawings and specific embodiments.

As Figure 1-4, luffing mechanism of the present utility model, the reel 3 comprising retarder 2, the motor 1 be connected with reducer input shaft 23 and be connected with reducer output shaft 21, described reducer output shaft 21 is arranged with externality shaft 22, described reel 3 is provided with internally toothed annulus 33, the middle part axis hole being placed on internally toothed annulus 33 in described externality shaft 22 engages with internally toothed annulus 33, and described reel 3 can slide relative to externality shaft 22, is rich in play surplus; The both sides of described internally toothed annulus 33 are equipped with Sealing shield ring 31, the engaging piece of externality shaft 22 and internally toothed annulus 33 is encased formation seal cavity by two Sealing shield rings 31, internally toothed annulus 33 is provided with the lubricating nipple 32 in communication seals space, seal cavity can prevent foreign object from entering engaging piece, lubricating nipple 23 can connect automatic oiling lubrication system, and lubrication is convenient; The end of described reducer input shaft 23 is provided with the internal tooth half a coupler 24 of band internal tooth, and the rotating shaft of described motor 1 is provided with the external tooth half a coupler 11 of band external tooth, and described external tooth half a coupler 11 is slidably sheathed with in internal tooth half a coupler 24.

Above-described, be only preferred embodiment of the present utility model, the scope that this practicality is implemented can not be limited, every equalization change of doing according to the utility model claim and decoration, all should still belong in scope that the utility model contains.

Claims

1. luffing mechanism, the reel comprising retarder, the motor be connected with reducer input shaft and be connected with reducer output shaft, it is characterized in that: described reducer output shaft is arranged with externality shaft, described reel is provided with internally toothed annulus, the middle part axis hole being placed on internally toothed annulus in described externality shaft engages with internally toothed annulus, and described reel can slide relative to externality shaft; Described internally toothed annulus both sides are equipped with Sealing shield ring, and the engaging piece of externality shaft and internally toothed annulus is encased formation seal cavity by two Sealing shield rings, and internally toothed annulus is provided with the lubricating nipple in communication seals space.

2. luffing mechanism according to claim 1, it is characterized in that: described reducer input shaft end is provided with the internal tooth half a coupler of band internal tooth, the rotating shaft of described motor is provided with the external tooth half a coupler of band external tooth, and described external tooth half a coupler is slidably sheathed with in internal tooth half a coupler.