JP2017109823A5

JP2017109823A5 -

Info

Publication number: JP2017109823A5
Application number: JP2015244562A
Authority: JP
Filing date: 2015-12-15
Publication date: 2019-03-07
Anticipated expiration: 2035-12-15

Description

実施形態の巻上機は、ロープを巻き掛け可能に設けられたシーブと、シーブを回転駆動させる電動機と、シーブおよび電動機を支持するベースと、を備えている。電動機は、シーブに連結され、中心軸回りに回転する回転子鉄心と、回転子鉄心の径方向外側に配置された円筒状の固定子鉄心と、固定子鉄心との間で通気空間を形成し、通気空間の内外を連通する吸気口および排気口が設けられたフレームと、を備えている。排気口には、フレームの内側からフレームの外側に排気するブロワが配置されている。 The hoisting machine of the embodiment includes a sheave provided so that a rope can be wound thereon, an electric motor that rotationally drives the sheave, and a base that supports the sheave and the electric motor. The motor is connected to a sheave and forms a ventilation space between a rotor core that rotates about a central axis, a cylindrical stator core that is disposed radially outside the rotor core, and the stator core. And a frame provided with an intake port and an exhaust port communicating with the inside and outside of the ventilation space. A blower for exhausting air from the inside of the frame to the outside of the frame is disposed at the exhaust port.

Claims

A sheave that can be wrapped around a rope,
An electric motor for rotating the sheave;
A base supporting the sheave and the electric motor;
With
The motor is
A rotor core connected to the sheave and rotating about a central axis;
A cylindrical stator core disposed radially outside the rotor core;
A frame provided with an air inlet and an air outlet that forms a ventilation space with the stator core and communicates the inside and outside of the ventilation space;
With
A hoisting machine in which a blower for exhausting air from the inside of the frame to the outside of the frame is disposed at the exhaust port.

The hoist according to claim 1, further comprising a support rib fixed to an inner peripheral surface of the frame facing the outer peripheral surface of the stator core and abutting against the outer peripheral surface of the stator core.

The ventilation space is provided continuously in the circumferential direction of the rotor core,
The hoist according to claim 1 or 2, wherein the exhaust port is provided on a side opposite to the intake port across the central axis.

The ventilation space is provided with a first partition plate and a second partition plate that divide the ventilation space in the circumferential direction of the stator core,
The first partition plate extends from the ventilation space into the intake port,
The hoisting machine according to any one of claims 1 to 3, wherein the second partition plate extends from the ventilation space into the exhaust port.

The intake port includes a first intake port and a second intake port,
The exhaust port includes a first exhaust port and a second exhaust port,
The ventilation space is provided with a first partition plate and a second partition plate that divide the ventilation space in the circumferential direction of the stator core and form a first space and a second space,
The first air inlet is formed at one end in the circumferential direction of the first space,
The first exhaust port is formed at the other end in the circumferential direction of the first space,
The second exhaust port is formed at one end in the circumferential direction of the second space,
The hoist according to any one of claims 1 to 3, wherein the second intake port is formed at the other end portion of the second space in the circumferential direction.

6. The hoist according to claim 5, wherein both end portions of the first space overlap the second space when viewed from the axial direction of the central axis.

A cover that surrounds the stator core, the rotor core, and the frame from both sides in the axial direction of the central axis;
The cover is formed with a vent opening communicating between the inside and outside of the cover,
The hoist according to any one of claims 1 to 6, wherein a through-hole that communicates the ventilation space and the inside of the cover is formed in the frame.

A cover connected to the frame and surrounding the rotor core and the stator core from outside in the axial direction of the central axis;
Between the rotor core and the cover, a fan that rotates with the rotation of the rotor core is disposed,
The cover includes
A first ventilation hole penetrating the cover;
A second ventilation port provided outside the first ventilation port in the radial direction and penetrating the cover;
The hoist according to any one of claims 1 to 6, wherein: is formed.