SU1640477A1

SU1640477A1 - Shoe brake

Info

Publication number: SU1640477A1
Application number: SU894674180A
Authority: SU
Inventors: Михаил Гивиевич Чиковани; Тинатин Цезаровна Чиковани
Original assignee: Кутаисский политехнический институт им.Н.И.Мусхелишвили
Priority date: 1989-02-02
Filing date: 1989-02-02
Publication date: 1991-04-07

Abstract

Изобретение относитс к машиностроению и может быть использовано в колодочных тормозных устройствах подъемно-транспортных машин. Цель изобретени - повышение надежности при реверсивном торможении путем упрощени кинематической схемы. На жестко закрепленной в корпусе 1 оси 2 свободно установлена ступица (С) 3 с фрикционным кольцом 4. На С 3 установлена шестерн 5, наход ща с в зацеплении с зубчатым сектором 6, закрепленным на валу 7, конец которой выполнен в виде кулачка 8. Тормозные колодки 11 и 12 установлены внутри тормозного шкива 15. При торможении С 3 перемещаетс на оси 2 и взаимодействует с торцовой поверхностью тормоз- нога шкива 15. Через шестерню 5, зубчатый сектор 6 и его вал 7 она поворачивает кулачок 8, разжима тормозные колодки 11 и 12. 2 ил.The invention relates to mechanical engineering and can be used in shoe brake devices of hoisting-and-transport machines. The purpose of the invention is to increase reliability when reversing braking by simplifying the kinematic scheme. A hub (C) 3 with a friction ring 4 is loosely mounted on an axis 2 rigidly fixed in housing 1. Gear 3 is mounted on C 3 and meshes with gear sector 6 mounted on shaft 7, the end of which is cam-shaped 8. Brake pads 11 and 12 are installed inside the brake pulley 15. When braking, C 3 moves on axis 2 and interacts with the end surface of the brake leg of pulley 15. Through gear 5, toothed sector 6 and its shaft 7, it turns cam 8, unclenching brake pads 11 and 12. 2 Il.

Description

фиг. IFIG. I

Claims

Claim

A brake shoe comprising a housing, a brake pulley, a drive lever, an axis rigidly connected to the housing, a friction ring interacting with the end surface of the brake pulley with a hub freely mounted on the axis to interact with the drive lever, brake pads with friction linings and stops at the ends and an expandable element mounted between the stops of the brake pads and kinematically connected by means of a transmission mechanism and a hub of the friction ring with a drive lever, characterized in that, in order to increase reliability during reverse braking by simplifying the kinematic scheme, the transmission mechanism is made in the form of a gear sector with a shaft rigidly connected to it and meshed with the gear sector of the gear connected to the hub of the friction ring, and the expanding element is made in the form of a rotary cam and mounted on said shaft.