SU927729A1

SU927729A1 - Bridge crane

Info

Publication number: SU927729A1
Application number: SU802951496A
Authority: SU
Inventors: Валентин Александрович Вишняков; Константин Поликарпович Владимиров; Александр Маркович Бальзак; Юрий Федорович Гаршин; Самул Хонович Меллер
Original assignee: Ленинградский Филиал Проектно-Технологического Института "Энергомонтажпроект"
Priority date: 1980-07-04
Filing date: 1980-07-04
Publication date: 1982-05-15

Description

1one

Изобретение относитс к подъелшо-транспортному машиностроению, а именно к мостовым кранам, и может быть использовано при монтаже т желовесного оборудовани , превышаюшего своим весом грузоподъемность используемого дл этой цели крана.The invention relates to an undercarriage engineering, namely bridge cranes, and can be used in the installation of tons of human equipment, exceeding in its weight the capacity of the crane used for this purpose.

Известно устройство дл увеличени грузоподъемности крана, содержащее раму неприводной тележки, установленную ходовыми колесами на рельсы моста крана и соедииенную с основной крановой тележкой посредством т г, подвижные и неподвижш 1е блоки, св занные канатом грузового полиспаста с : механизмом подъема крановой тележки, причем подвижные блоки соединены с крюковой подвеской крана, а неподвижные блоки смонтированы на раме, соединенной с ходовыми колесами, установленными на рельсы моста крана и св занными с крановой тележкой посредством распорок ИОднако данное устройство характеризуетс невозможностью расстановки тележек на значительное рассто ние друг от друга из-за чрезмерного косого пат жени ветвей грузеA device for increasing the crane lifting capacity is known, comprising a frame of a non-driving trolley mounted by the traveling wheels on the rails of the crane bridge and connected to the main crane trolley by means of t, mobile and immobile 1e blocks connected by a rope of a cargo pulley with: a lifting mechanism of the crane trolley connected to the crane's hook suspension, and the fixed blocks are mounted on a frame connected to the traveling wheels mounted on the crane bridge rails and connected to the crane trolley through The device is characterized by the impossibility of placing the carts at a considerable distance from each other due to excessive oblique patrol of the branches of the load.

;вого по шспаста и невозможностью перераспределени величин нагрузок, приход щихс на теле оси от веса поднимаемого груза.This is due to the fact that it is impossible to redistribute the values of the loads that occur on the body of the axle from the weight of the lifted load.

Известен мостовой кран, содержащий пролетное строение, грузовую тележку с механизмом подъема, вспомогательную неприводную тележку, рама которой размещена под грузовой тележкой и соединена т гами с ее ходовыми колесами, которые соединены с грузовой тележкой распорками, подвижные и неподвижные блоки, св занные канатами грузового полиспаста с мех анизмом подъема грузовой тележки, причем подвижные блоки соединены с крюковой подвеской крана, а неподвижные - смонтированы A bridge crane is known, containing a span structure, a cargo trolley with a lifting mechanism, an auxiliary non-driving trolley, the frame of which is located under the cargo trolley and is connected by rods with its traveling wheels, which are connected to the cargo trolley by spacers, movable and fixed blocks connected by ropes of the cargo pulley with an anism of lifting the trolley, the moving blocks are connected to the crane hook and the fixed ones are mounted

IS на раме неприводной тележки 2.IS on the frame of the non-drive trolley 2.

Недостаток данного мостового крана состоит в невозможности перераспределени величин нагрузок, приход щихс на тележки от веса груза.The disadvantage of this bridge crane is the impossibility of redistributing the values of the loads per truck on the weight of the load.

2020

Claims

The purpose of the invention is to increase the lifting capacity of the crane bridge by redistributing the loads along the length of the span. This goal is achieved by the fact that, in the bridge crane, the struts are located at an angle to the span and are connected to the crane bogie by means of vertical struts and a compressive link, with the rods also arranged at an angle to the span, and the driving wheels are loaded with 4g-ct forces. where N is the load on the frame of the cart from the weight j5 - the angle of inclination of the struts to the superstructure; a is the angle of inclination of ti gi to the superstructure. ) The drawing shows a bridge crane, a general view. The bridge crane contains a span I, a cargo trolley 2, a lifting mechanism 3 mounted on it, an auxiliary non-performing trolley, the frame 4 of which is placed under the cargo trolley 2 and connected by means of 5 with its traveling wheels 6. The running wheels 6 are connected to the cargo trolley 2 by spacers 7. Suspension 8 with movable blocks 9- connected to the main suspension 10 edge on. Rope II of the cargo polyspast connects the double-wing fixed blocks 12 and the movable blocks 9 with the lifting mechanism 3. The struts 7 are connected to the crane truck with the help of vertical posts 13 and the compression link 14. The overhead crane operates as follows. The auxiliary non-drive trolley is installed on the crane for the period of installation of the equipment, the weight of which exceeds the capacity of the crane. An increase in the load capacity of the cr k is achieved by increasing the number of working branches of the chain hoist by putting into operation additional moving and fixed blocks, while the load from the weight of the load coming on the crane truck does not exceed the nominal and the surplus is equal to 2N. 5 to the running wheels 6. Due to the fact that the rods 5 work only for stretching and do not transmit bending moments, the running wheels 6 can be placed at a sufficiently large distance from the crane truck, thereby unloading crane bridge. The struts 7, when inclined t 5 to the horizontal at an angle, require significant compressive forces, which can be used to further unload the crane bridge by re-distributing the 4th load values attributable to the wheels of the crane truck 2 and the driving wheels of the auxiliary truck. For this, the struts 7 are attached to the crane truck at an angle j3. using the uprights 13 and the collapsing link 14; at this, the wheels of the crane truck are unloaded, and the running wheels 6 are additionally loaded with PM force (L P F / 6 G C so, changing the length and height of inclination of T g 5 and the spacers 7, you can load the crane bridge most displacement of cargo, the weight of which greatly exceeds the capacity of the crane. The use of an overhead crane of such a construction makes it possible to increase its load capacity. Invention The bridge crane containing a superstructure, a cargo trolley with a lifting mechanism, an auxiliary crane an electric drive trolley, the frame of which is placed under the cargo trolley and connected with its running wheels, which are connected to the cargo trolley by spacers, movable and fixed blocks connected by ropes of a cargo polyspast with the lifting mechanism of the cargo trolley; and the fixed blocks are mounted on a frame of a non-drive trolley, characterized in that, in order to increase the lifting capacity of the crane by redistributing loads along the length of the span, the spacers are located The pipes are angled to the span and are connected to the crane trolley with the help of vertical struts and a compression link, the rods are also at an angle to the span, and the driving wheels are additionally loaded with force -. . where N is the load on the frame of the cart from the weight of the load; D is the angle of inclination of the struts to the superstructure; and - the angle of inclination of ti gi to the superstructure. Sources of information taken into account in the examination 1.US Patent N 3854592, cl. 212-11, 1974. 2, USSR Copyright Certificate No. 2819238/11, cl. B 66 C 17/00, 09/20/1979 (prototype).