SU1742199A1

SU1742199A1 - Load lifting crane

Info

Publication number: SU1742199A1
Application number: SU894726475A
Authority: SU
Inventors: Борис Давидович Гильченок; Валерий Евгеньевич Левицкий; Виктор Хананович Баркман
Original assignee: Механический Завод Главленинградремстроя
Priority date: 1989-06-05
Filing date: 1989-06-05
Publication date: 1992-06-23

Abstract

Изобретение относитс к башенным кранам. Цель изобретени - повышение эффективности . При увеличении вылета работа дл подьема грузовой тележки 5 не затрачиваетс , так как она компенсируетс потенциальной энергией от веса крюковой подвески 12. При движении тележки 5 в сторону башни потенциальна энерги от ее веса компенсирует работу по перемещению крюковой подвески 12 с грузом на определенную высоту. Дл обеспечени вышеописанных условий стрела 4 расположена под углом а к горизонту, причем a arcsin (0,92- 0.95) m/k, где k - кратность грузового полиспаста , m - разность между числом ветвей грузового каната 6, расположенных от тележки 5 в сторону головной части стрелы 4 и числом ветвей грузового каната 6, расположенных от тележки 5 в сторону корневой части стрелы 4. 1 з.п. ф-лы, 3 ил.This invention relates to tower cranes. The purpose of the invention is to increase efficiency. With the increase of departure, the work for lifting the trolley 5 is not expended, since it is compensated by potential energy from the weight of the hook suspension 12. When the trolley 5 moves towards the tower, the potential energy from its weight compensates for the movement of the hook suspension 12 with a load to a certain height. To ensure the above-described conditions, the boom 4 is located at an angle a to the horizon, with a arcsin (0.92-0.95) m / k, where k is the multiplicity of the cargo polyspast, m is the difference between the number of branches of the cargo rope 6, located from the carriage 5 towards the head of the boom 4 and the number of branches of the cargo rope 6, located from the trolley 5 in the direction of the root of the boom 4. 1 Cp f-ly, 3 ill.

Description

Фиг. 2FIG. 2

II

Фие.ЗFi.Z

Claims

Claim

1. A crane containing a slewing ring with a tower and a boom mounted on it, on which a drive freight trolley with a chain hoist is installed, the cargo rope of which is stored in bypass blocks mounted on the root and head parts of the boom, a jib cable calculated platform and through the head of the tower - with an arrow, characterized in that, in order to increase efficiency, the arrow is located at an angle to the horizon a = arcsin (0.92-0.95), where k is the multiplicity of the cargo block:

m is the difference between the number of branches of the cargo rope located from the cargo trolley towards the head of the boom, and the number of branches of the cargo cable located from the cargo trolley towards the root of the boom.

2. The crane according to claim 1, characterized in that the end of the boom rope is mounted on the drum of a cargo winch to change the angle of the boom.

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