Connecting structure of crossing type double trolleys

Abstract

The invention discloses a connecting structure of crossing type double trolleys. The connecting structure comprises a first girder and a second girder, wherein a first guide rail and a second guide rail are arranged on opposite inner sides of the first girder and the second girder and jointly form a first guide rail structure for supporting operation of an upper trolley; a third guide rail and a fourth guide rail are arranged on opposite outer sides of the first girder and the second girder and jointly form a second guide rail structure for supporting operation of a lower trolley; and the connecting structure further comprises a U-shaped frame structure which adopts a rigid connecting structure which is arranged between a first traveling mechanism and a second traveling mechanism and used for connecting the first traveling mechanism and the second traveling mechanism. According to the connecting structure, the second guide rail structure for supporting the lower trolley is only provided with two guide rails, two guide rails are reduced while compared with the prior art, the mounting technology is simplified, the overall weight of a quayside container crane is reduced, further, stress between the first traveling mechanism and the second traveling mechanism is balanced due to the rigid connecting structure, and the first traveling mechanism and the second traveling mechanism are prevented from separating from the third guide rail and the fourth guide rail.

Description

technical field [0001] The invention relates to a girder structure, in particular to a connection structure of a crossing double trolley suitable for a crossing double trolley, and belongs to the technical field of hoisting and transportation equipment. Background technique [0002] At present, in actual use, there is generally only one track on the main girder of the bridge type crane. This track can only be used for one trolley to walk independently throughout the whole process, or for several trolleys to walk on the track in sequence. The front and rear trolleys on the same track cannot intersect or cross each other, and it is difficult to arrange the traction and hoisting wire ropes of each trolley on the same track; this kind of girder structure limits the space of the crane to a large extent Utilization and handling efficiency. [0003] For this reason, Chinese patent document CN101323415A discloses a kind of passing type double trolley bridge type crane, and it compr...

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Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is that in prior art cranes, in order to ensure the balance of the lower trolley in high-speed operation, four guide rails are needed to support the operation of the lower trolley, and the setting of too many guide rails not only causes the main girder The increase in weight affects the overall operating efficiency of the crane, and makes the processing, installation and other processes more complicated, which increases production costs and manpower consumption; and then provides a cross-type double trolley suitable for cross-type double trolleys with a small number of guide rails connection structure

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