RU2041154C1

RU2041154C1 - Floating crane lifting mechanism

Info

Publication number: RU2041154C1
Authority: RU
Inventors: Геннадий Иванович Рудак; Владимир Иванович Бочаров
Original assignee: Геннадий Иванович Рудак; Владимир Иванович Бочаров
Priority date: 1992-02-10
Filing date: 1992-02-10
Publication date: 1995-08-09

Abstract

FIELD: load-lifting facilities; floating cranes. SUBSTANCE: crane boom head is made in form of cross beam with groups of paired pulley block casings. Load winch drums are arranged in two rows and are connected by clutches. Each group of pulley blocks is reeved by one wire rope whose ends are secured in unidirectional end faces of two adjacent drums located in different rows. Fitted on boom cross beam at side of its joint are fixed block casings, and return and equalizing blocks are arranged in casings farthest from wall of cross beam. Drums are connected by clutches in each row. EFFECT: enlarged operating capabilities. 6 dwg

Description

Изобретение относится к грузоподъемным, преимущественно, плавучим кранам. The invention relates to hoisting, mainly floating cranes.

Цель изобретения упрощение механизма подъема и повышение эксплуатационных свойств. The purpose of the invention is to simplify the lifting mechanism and improve operational properties.

На фиг. 1 показан общий вид механизма подъема на плавкране; на фиг. 2 вид по стрелке А на фиг. 1; на фиг. 3 узел I на фиг. 1; на фиг. 4 вид по стрелке Б на фиг. 3; на фиг. 5 канатная схема механизма подъема; на фиг. 6 узел II на фиг. 5. In FIG. 1 shows a general view of the lifting mechanism on a floating crane; in FIG. 2 is a view along arrow A in FIG. 1; in FIG. 3 node I in FIG. 1; in FIG. 4 is a view along arrow B in FIG. 3; in FIG. 5 rope diagram of the lifting mechanism; in FIG. 6 node II in FIG. 5.

Механизм подъема содержит соединенные муфтами 1 и 2 грузовые лебедки 3, 4, 5 и 6 с барабанами 7, 8, 9 и 10, установленные на плавучие средства подвеску 11 с блочными обоймами 12 и 13 и балансирами 14, 15 и 16, подсоединенную к выполненной на оголовке стрелы поперечине 17 с обращенной к шарниру 18 стрелы 19 стенкой 20 на полиспастах 21, образованных канатами 22, сходящими с блоков 23 стойки 24, группы блоков 25, содержащие обоймы 26 и 27 с обводным блоком 28 и уравнительным элементом в виде уравнивательного блока 29. Лебедка 30 служит для изменения вылета стрелы с помощью полиспаста 31. The lifting mechanism comprises freight winches 3, 4, 5 and 6 connected by clutches 1 and 2 with drums 7, 8, 9 and 10, suspension 11 mounted on floating means with block clips 12 and 13 and balancers 14, 15 and 16, connected to on the head of the boom cross member 17 with the wall 20 facing the hinge 18 of the boom 19 on the chain hoists 21 formed by ropes 22 extending from the blocks 23 of the rack 24, the groups of blocks 25 containing the clips 26 and 27 with the bypass block 28 and the leveling element in the form of a leveling block 29 . The winch 30 serves to change the reach of the boom using ispasta 31.

Грузовые лебедки расположены в два ряда, а муфты 1 и 2 их соединения установлены между их торцами в каждом ряду. Cargo winches are arranged in two rows, and couplings 1 and 2 of their connection are installed between their ends in each row.

Перечисленные выше элементы механизма подъема взаимодействуют между собой следующим образом. The above elements of the lifting mechanism interact with each other as follows.

Каждый полиспаст 21 механизма подъема образован только одним канатом 22, концы которого закреплены на одноименных торцах барабанов 7 и 10, разнесенных вдоль плавкрана и принадлежащих разным лебедкам 3 и 6, скомпонованным в два ряда. Each tackle 21 of the lifting mechanism is formed by only one rope 22, the ends of which are fixed on the same ends of the drums 7 and 10, spaced along the crane and belonging to different winches 3 and 6, arranged in two rows.

Канаты 22 с барабанов 7 и 10 (8 и 9) идут двумя ветвями на блоки 23 стойки 24, откуда также двумя ветвями на обоймы 26 и 27, причем ветвь каната 22 на обойму 26 попадает через обводной блок 28, входящий в состав обоймы 27. Затем каждая ветвь запасовывается в свою половину полиспаста 21 (одна между блоками обоймы 27 на стреле 19 и блоками обоймы 13 подвески 11, другая между обоймами 20 и 12). Половины полиспаста 21 объединяются в одно целое на уравнительном блоке 29, входящем в состав обоймы 27. The ropes 22 from the drums 7 and 10 (8 and 9) go in two branches to the blocks 23 of the rack 24, from where also two branches to the clips 26 and 27, and the branch of the rope 22 to the clip 26 through the bypass block 28, which is part of the clip 27. Then each branch is stored in its half of the chain hoist 21 (one between the blocks of the holder 27 on the boom 19 and the blocks of the holder 13 of the suspension 11, the other between the clips 20 and 12). The halves of the tackle 21 are combined into a single unit on the equalization unit 29, which is part of the clip 27.

Поскольку каждый из полиспастов 21 образован только одним канатом 22, то для выравнивания нагрузок в двух соседних полиспастах 21 служат балансиры 16 и 15, на концах которых смонтированы обоймы 12 и 13. Выравнивание нагрузок между балансирами 16 и 15 производится общим балансиром 14. Since each of the chain hoists 21 is formed by only one rope 22, balancers 16 and 15 are used to equalize the loads in two adjacent chain hoists 21, at the ends of which the clips 12 and 13 are mounted. The load is balanced between the balancers 16 and 15 by the general balancer 14.

Муфты 1 и 2, связывающие лебедки 3 и 4 (5 и 6), обеспечивают одновременное вращение барабанов 7 и 9 (9 и 10) при неодинаковых характеристиках электродвигателей лебедок 3 и 4 (5 и 6). Это обеспечивает одинаковую скорость намотки канатов 22 на барабаны 7 и 8 (9 и 10) лебедок. Clutches 1 and 2, connecting winches 3 and 4 (5 and 6), provide simultaneous rotation of the drums 7 and 9 (9 and 10) with unequal characteristics of the electric motors of winches 3 and 4 (5 and 6). This ensures the same speed of winding of the ropes 22 on the drums 7 and 8 (9 and 10) of the winches.

Данная конструкция механизма подъема упрощает компоновку обойм полиспастов на стреле, при заданном ее минимальном вылете уменьшает угол наклона стрелы к горизонту, тем самым обеспечивая незапрокидывание стрелы на минимальных вылетах. Упрощается конструкция блочного оборудования на стреле, технология запасовки канатов и электрическая схема приводов лебедок. Все это снижает металлоемкость механизма подъема и стрелы крана и улучшает эксплуатационные свойства механизма и плавкрана в целом. This design of the lifting mechanism simplifies the layout of the chain hoists on the boom, at a given minimum outreach, reduces the angle of the boom to the horizontal, thereby ensuring the non-tipping of the boom at minimum overhangs. The design of the block equipment on the boom, the technology of rope storage and the electrical circuit of the winch drives are simplified. All this reduces the metal consumption of the lifting mechanism and crane jib and improves the operational properties of the mechanism and floating crane as a whole.

Claims

A MOBILE LIFTING LIFTING MECHANISM comprising at least four cargo winches with parallel drums mounted on a floating vehicle, an arrow pivotally mounted with its base on a floating vehicle, chain hoists with fixed block clips spaced along the boom, stocked with traction ropes connected to the winch drum drums through and leveling elements, and a load suspension associated with the movable clips of the chain hoists, characterized in that the arrow is made with a head in the form of a transverse ball and, the tackles are made in the form of groups of paired block cages located symmetrically to each other with respect to the vertical axis of symmetry, fixed block cages are placed along the side of the transverse beam wall facing the hinge, the bypass blocks and leveling elements made in the form of leveling blocks are mounted at the farthest relative to the aforementioned the walls of the transverse beam of stationary clips, winches are arranged in two rows and are connected in each row by means of couplings, while each group of chain hoists is stocked one rope fixed at its ends on the unidirectional ends of two adjacent drums located in different rows.