SU1580079A2

SU1580079A2 - Drum brake

Info

Publication number: SU1580079A2
Application number: SU884423465A
Authority: SU
Inventors: Герас Ильич Мамити; Анатолий Михайлович Скребунов; Василий Васильевич Геращенко; Василий Павлович Лобах
Original assignee: Могилевский Машиностроительный Институт
Priority date: 1988-05-10
Filing date: 1988-05-10
Publication date: 1990-07-23

Abstract

Изобретение относитс к машиностроению и может быть использовано в подъемно-транспортных машинах. Цель изобретени - повышение долговечности путем выравнивани и износа обеих колодок. Дл этого в гидроцилиндре тормоза 5 установлены два поршн (П) 11 и 12, между которыми расположена рабоча полость (РП) 13. Один из П 11 выполнен ступенчатым с участками 14 и 15 двух разных диаметров. Концентрично участку 15 расположена дополнительна полость 16, соединенна каналом 17 с РП 13. В канале 17 размещен золотник 18. При торможении в РП 13 подаетс тормозна жидкость, котора раздвигает П 11 и 12. В результате перераспределени веса транспортного средства нагрузка от подвески передаетс на золотник 18 и РП 13 соедин етс с полостью 16, что обеспечивает одинаковую нагрузку на колодки тормоза. 2 з.п. ф-лы, 3 ил.The invention relates to mechanical engineering and can be used in hoisting machines. The purpose of the invention is to increase durability by leveling and wear of both pads. For this purpose, in the hydraulic cylinder of the brake 5, two pistons (P) 11 and 12 are installed, between which there is a working cavity (RP) 13. One of P 11 is made stepped with sections 14 and 15 of two different diameters. Concentric to section 15 there is an additional cavity 16 connected by channel 17 to RP 13. Spool 18 is located in channel 17. When braking, RP 13 supplies brake fluid, which pushes P 11 and 12. As a result of the vehicle weight redistribution, the load from the suspension is transferred to the spool 18 and RP 13 is connected to cavity 16, which provides the same load on the brake pads. 2 hp f-ly, 3 ill.

Description

Фиг.FIG.

2 М2 M

11eleven

7979

ф , f От подвескиf, f From suspension

Claims

Claim

1. Drum brake according to ed. St.

25 No. 1355798, characterized in that, in order to increase durability by leveling. wear of the friction linings of both pads, the expanding mechanism is made in the form of a hydraulic cylinder with two pistons, between which there is a working

30 cavity, and a spool installed in the channel made in the hydraulic cylinder, while t one of the pistons is made stepwise with sections having different diameters with the formation of an additional cavity concentric to the section with a smaller diameter.

2. The brake according to π. 1, characterized in that the stepped piston is installed with the possibility of interaction with the end surface of the section with a large diameter with a secondary ₄ θ brake pad, and the second piston is made with a diameter equal to a smaller diameter of the first piston.

3. The brake according to π. 1, characterized in that the stepped piston is installed with the possibility of interaction of the front over -

45 part of the plot, with a large diameter with the primary brake pad, and the second piston is made with a diameter equal to the larger diameter of the second piston.

Fig 3 ' ^no ^ ^ecKLi