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Trackless portal crane

A gantry crane and trackless gantry technology, applied in the direction of cranes, trolley cranes, traveling mechanisms, etc., can solve the problems of slow traveling speed, limitation, and cumbersome structure.

Inactive Publication Date: 2016-05-04
DALIAN LIANCHUAN HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of mobile crane is limited by the overturning moment, and its lifting capacity will decrease rapidly with the increase of the span, and the truck crane must be equipped with a set of fixing devices when lifting, so it cannot walk after lifting; crawler Although the crane can lift the load and walk, but its structure is heavy and the walking speed is slow, and when it needs to turn, its turning radius is large and the economy is poor, which will also be greatly restricted in application.

Method used

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Embodiment Construction

[0018] The specific implementation manner of the present invention will be described below with reference to the accompanying drawings. Such as Figure 1 to Figure 9 Shown: a trackless gantry crane, which includes two horizontally arranged and symmetrical lower straight beams 1, a traveling mechanism 2 is arranged at both ends of each lower straight beam 1, and the shaft of the lower straight beam 1 A telescopic suspension leg structure 3 is longitudinally arranged at the center, and a main beam 4 is jointly supported at the top of the two telescopic suspension leg structures 3, an electric hoist crane 5 is arranged on this main beam 4, and an electric hoist crane 5 is arranged on the telescopic crane. The upper part outside the leg structure 3 is also provided with a connecting block 6, and a slanting column 7 for enhancing stability is arranged between the lower straight beam 1 and the connecting block 6;

[0019] The above-mentioned walking mechanism includes a main shaft ...

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Abstract

The invention discloses a trackless portal crane. The trackless portal crane is characterized by comprising two lower straight beams (1) which are symmetrically arranged, wherein each of two ends of each lower straight beam (1) is provided with a traveling mechanism (2), a telescopic hanging leg structure (3) is longitudinally arranged at the axial center of each lower straight beam (1), the top ends of the two telescopic hanging leg structures (3) collectively support a main beam (4), the main beam (4) is also provided with an electric hoist (5), the outer upper part of each telescopic hanging leg structure (3) is also provided with a connection block (6), and an oblique column (7) is arranged between the lower straight beam (1) and the connection block (6). The trackless portal crane has the advantages of a portal crane and a movable crane but is not limited by the track.

Description

technical field [0001] The invention relates to a lifting device, in particular to a trackless gantry crane. Background technique [0002] So far, cranes can be divided into two categories according to their functions and forms: tracked cranes and trackless cranes. Among them, there are two types of rail cranes: various bridge cranes whose tracks are located in the air, and gantry cranes or portal cranes whose tracks are located on the ground. Among several types of various types, under the same lifting capacity, span and lifting height, the gantry crane is the most cost-effective, but its disadvantage is that it can only walk in a straight line on a fixed track along the direction of the track, and there are certain limitations. sex. [0003] Trackless cranes can also be divided into two types: one is that the crane itself has no traveling mechanism and cannot be moved, such as various sea cranes installed on ships; the other is mobile lifting equipment such as truck cran...

Claims

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Application Information

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IPC IPC(8): B66C19/00B66C9/00
CPCB66C19/00B66C9/00
Inventor 方裕华方晶
Owner DALIAN LIANCHUAN HEAVY IND
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