CN203624887U

CN203624887U - Folding-jib gantry crane

Info

Publication number: CN203624887U
Application number: CN201320667042.1U
Authority: CN
Inventors: 干卓君
Original assignee: Ningbo Jessn Ocean Development Co Ltd
Current assignee: Jessn Marine Equipment Co ltd; Victory Marine Equipment Co ltd
Priority date: 2013-10-28
Filing date: 2013-10-28
Publication date: 2014-06-04
Anticipated expiration: 2023-10-28

Abstract

The utility model discloses a folding-jib gantry crane. The folding-jib gantry crane comprises at least two lifting structures, wherein each lifting structure comprises a base, the base is provided with a first mechanical arm, a second mechanical arm is rotatably connected at the upper end of the first mechanical arm, the other end of the second mechanical arm is rotatably connected with a third mechanical arm, the third mechanical arm and the second mechanical arm are hinged at the side, the third mechanical arm is connected with a fourth mechanical arm, a first hydraulic cylinder is connected between the first mechanical arm and the second mechanical arm, and a second hydraulic cylinder is connected between the second mechanical arm and the third mechanical arm. With the two folding jibs, namely the second mechanical arm and the third mechanical arm, the gantry crane can lay instruments lower; as the second mechanical arm and the third mechanical arm are rotatably hinged at the side, windward area is not increased when the second mechanical arm and the third mechanical arm are folded.

Description

A kind of folding-jib door type crane

Technical field

The utility model relates to marine machinery technical field, specifically a kind of folding-jib door type crane, the equipment of using for lifting cargo on boats and ships.

Background technology

Crane claims again loop wheel machine peculiar to vessel, deck crane, it is the large deck machinery of one on ship, it is a kind of equipment of ship loading and unloading goods, crane is a kind of cargo handling appliance generally using on boats and ships, because the sea is rough, for the general crane of bearing surface that reduces wind is all single arm type, and general crane only has a folding arm, if folding arm is too many, in the time drawing in, hold wind area very large, can make hull rock and there is certain danger.On scientific investigation ship, crane is for putting into water by various detecting instruments, and one is only had a folding arm instrument can not be put very low, therefore can not be satisfied with on scientific investigation ship and use, and the general all smaller cranes of scientific investigation ship can not have the very large wind area that holds.

Summary of the invention

The utility model, for prior art deficiency, provides a kind of folding-jib door type crane, and this crane is more easily put into water by detecting instrument, and when work is more stable.

In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of folding-jib door type crane, comprise at least two lifting structures, described lifting structure comprises base, on described base, be provided with the first mechanical arm upper end described in the first mechanical arm and be rotatably connected to the second mechanical arm, the described second mechanical arm other end is rotatably connected to three-mechanical arm, described three-mechanical arm and described the second mechanical arm are hinged from the side, described three-mechanical arm is all connected with the 4th mechanical arm, between described the first mechanical arm and described the second mechanical arm, be connected with the first hydraulic actuating cylinder, between described the second mechanical arm and described three-mechanical arm, be connected with the second hydraulic actuating cylinder.This door type crane has lower that the second mechanical arm and two folding arms of three-mechanical arm can put instrument, and because the second mechanical arm and three-mechanical arm are to rotate from the side hingedly, therefore after gathering, can not increase wind area.

The utility model compared with prior art, there is following beneficial effect: this door of the utility model type crane has lower that the second mechanical arm and two folding arms of three-mechanical arm can put instrument, and because the second mechanical arm and three-mechanical arm are to rotate from the side hingedly, therefore after gathering, can not increase wind area.

Accompanying drawing explanation

Fig. 1 is the utility model embodiment entirety front view.

Fig. 2 is the partial enlarged drawing in Fig. 1.

Fig. 3 is the utility model embodiment entirety birds-eye view.

Fig. 4 is the structural representation of flexible mechanical arm end.

Fig. 5 is the schematic diagram after folding of hoist mechanism.

The specific embodiment

Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail: referring to Fig. 1 to Fig. 5, a kind of folding-jib door type crane, comprise two lifting structure a, two described lifting structure a comprise base 1, on described base 1, be provided with the first mechanical arm 2, described the first mechanical arm 2 is rotationally connected with described base 1, described the first mechanical arm 2 upper ends are rotatably connected to the second mechanical arm 3, described second mechanical arm 3 other ends are rotatably connected to three-mechanical arm 4, in order to hold wind area after reducing crane and drawing in, described three-mechanical arm 4 is hinged from the side with described the second mechanical arm 3.Instrument is put into the length in seawater and does not affect it hold wind area after gathering in order to increase crane, on described three-mechanical arm 4, comprise housing 41, in housing 41, be provided with flexible mechanical arm 42, form telescoping mechanism, in order to extend the service life of telescoping mechanism, described flexible mechanical arm 42 one end in described housing 41 is provided with boss 421, on described boss 421, be provided with some wear-resistant blocks 422, described boss 421 cross sections are square, 421 4 sides of described boss are provided with described wear-resistant block 422, the wear-resistant block 422 adopting in the present embodiment is nylon block.The other end of two flexible mechanical arms 42 is all connected with the 4th mechanical arm 5, forms door shape crane, and for a type crane can be rotated, described flexible mechanical arm 42 is and is rotationally connected with described the 4th mechanical arm 5.For operating personal when the crane operation can be seen the angle of three-mechanical arm 4 and horizontal surface, facilitate workman to operate, on described housing 41, be rotationally connected and be provided with pointer 43, described pointer 43 is subject to self gravitation effect to point to all the time direction straight down, on described housing 41, be also provided with calibrated disc 44, calibrated disc 44 subscripts are marked with scale, in the time of three-mechanical arm 4 level described in " 0 " scale on calibrated disc 44 described in pointed.

On described the 4th mechanical arm 5, be provided with three hooks 6, the crane of traditional single armed can only be hung an instrument and put into marine detection simultaneously, and this crane can be hung three instruments simultaneously and puts into marine detection.

In described base 1, being provided with HM Hydraulic Motor (not drawing on figure) controls described the first mechanical arm 2 and rotates, described the first mechanical arm 2 and described the second mechanical arm 3, described the second mechanical arm 3 and described three-mechanical arm 4 are all controlled rotation by hydraulic actuating cylinder, between described the first mechanical arm 2 and described the second mechanical arm 3, be connected with the first hydraulic actuating cylinder 71, between described the second mechanical arm 3 and described three-mechanical arm 4, be connected with the second hydraulic actuating cylinder 72, with on described housing 41, be provided with the 3rd hydraulic actuating cylinder 73, described the 3rd hydraulic actuating cylinder 73 one end connect the other end on described housing 41 and connect described flexible mechanical arm 42, control the flexible of flexible mechanical arm 42.

Claims

1. a folding-jib door type crane, it is characterized in that: comprise at least two lifting structures (a), described lifting structure (a) comprises base (1), on described base (1), be provided with described the first mechanical arm of the first mechanical arm (2) (2) upper end and be rotatably connected to the second mechanical arm (3), described the second mechanical arm (3) other end is rotatably connected to three-mechanical arm (4), described three-mechanical arm (4) is hinged from the side with described the second mechanical arm (3), described three-mechanical arm (4) is all connected with the 4th mechanical arm (5), between described the first mechanical arm (2) and described the second mechanical arm (3), be connected with the first hydraulic actuating cylinder (71), between described the second mechanical arm (3) and described three-mechanical arm (4), be connected with the second hydraulic actuating cylinder (72).