CN203319564U

CN203319564U - Portal crane for shipbuilding

Info

Publication number: CN203319564U
Application number: CN2013203464259U
Authority: CN
Inventors: 于志杰; 刘兰荣; 刘彬; 吕国庆
Original assignee: Shandong Fenghui Equipment Technology Co Ltd
Current assignee: Shandong Fenghui Equipment Technology Co Ltd
Priority date: 2013-06-18
Filing date: 2013-06-18
Publication date: 2013-12-04
Anticipated expiration: 2023-06-18

Abstract

The utility model discloses a portal crane for shipbuilding. The portal crane comprises a girder, a box-type rigid leg and a large-section steel-tube flexible leg, wherein the girder is connected with the rigid leg by a flange, and connected with the flexible leg through a spherical hinge; the middle part of the girder is a trussed girder; the joint of two ends, the rigid leg and the flexible leg is in a box structure; the trussed girder at the middle part is connected with box-type beam girders at two ends by the flanges; the trussed girder at the middle part is in a sectional structure; the sections of the trussed girder are connected by flanges; the trussed girder at the middle part is divided into three sections, the middle section is long, and the sections at two ends are short. The girder disclosed by the utility model is in a truss form, therefore, the dead load of the portal crane reduced to a great extent, an operating mechanism is reduced, and also the span of the crane can be adjusted; the portal crane is more suitable for the growing shipbuilding industry demands. Therefore, the portal crane has the advantages of being novel in structure, light in dead load, reliable to connect, low in cost, convenient to install and the like.

Description

A kind of shipbuilding transfer crane

Technical field

The utility model relates to a kind of novel shipbuilding transfer crane, belongs to the hoisting crane technical field.

Background technology

Hoisting capacity, span and the increase highly day by day of transfer crane for shipbuilding at present, traditional shipbuilding is box-structure with transfer crane, girder is connected with flange with rigid leg, be connected (as shown in Figure 1) with flexible leg by ball pivot, its middle girder is the shipbuilding parts the heaviest with transfer crane, manufacturing process is also complicated, girder is high web box beam, the reinforced rib of flange plate and web is a lot, often in order to alleviate girder deadweight web, can adopt the plate of different-thickness to be spliced, welding capacity is very large, and welding requirements is also very high.Shipbuilding door machine for large span, girder deadweight sometimes for complete machine conduct oneself with dignity over half, when reason is exactly large span, the box-structure dead weight is just very large, and the wind area of box type girder is also very large, wind load while causing force analysis is large, thereby causes each operating unit also all heavier.Shipbuilding door machine is from great, and cross section causes greatly erected cost high, so it is very meaningful to alleviate the deadweight of girder.

Summary of the invention

Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and a kind of novel shipbuilding transfer crane is provided.

For solving this technical matters, the utility model provides a kind of shipbuilding transfer crane, comprise girder, box rigid leg and heavy in section steel pipe type flexible leg, girder is connected with flange with rigid leg, with flexible leg, by ball pivot, be connected, the middle part of described girder is that truss-like girder, two ends and rigid leg and flexible leg junction are box-structure, and middle part truss-like girder adopts flange to be connected with two ends box beam type girder.

Described middle part truss-like girder is segmentation structure, between each section truss-like girder, all with flange, connects.

Described middle part truss-like girder is divided into three sections, wherein in the middle of the segment length, the two ends section is short.

Described truss-like girder adopts the straight seam welded steel pipe splicing, and material is Q345C.

Settle electric, elevator and platform cat ladder in the case structure of described rigid leg.

Beneficial effect: girder of the present utility model is truss-like, not only largely reduce the deadweight of a machine, reduce operating unit, and can adjust the hoisting crane span, and be more suitable for growing ship building industry demand, the utlity model has novel structure, from heavy and light, connect reliably, with low cost, be convenient to the advantages such as installation.

The accompanying drawing explanation

The shipbuilding that Fig. 1 is prior art transfer crane structural representation;

Fig. 2 is structural representation of the present utility model.

In figure: 1 girder, 2 rigid legs, 3 flexible legs, 4 truss-like girders.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is done to specific descriptions.

Figure 2 shows that structural representation of the present utility model.

The utility model comprises girder 1, rigid leg 2 and flexible leg 3, and girder 1 is connected with rigid leg 2 use flanges, with flexible leg 3, by ball pivot, is connected.

Rigid leg 2 adopts box-structure, and the one, integral rigidity is good, and the 2nd, electric and elevator, platform cat ladder etc. all can be placed among supporting leg, electric system is played a protective role, hommization.

Flexible leg 3 is the heavy in section steel-tube construction, makes simply technical maturity.

The middle part of described girder 1 is truss-like girder 4, this truss-like girder 4 is twin-spar construction, its two ends and rigid leg 2 adopt the box beam form with flexible leg 3 junctions, after the shutoff of two ends, making corresponding flange tap with middle part truss girder 4 junctions, middle part truss-like girder 4 adopts flange to be connected with two ends box beam type girder, can reduce greatly the deadweight of beam with respect to whole box type girder form, saves material and reduces costs.

The truss-like girder 4 at the middle part of girder 1, power transmission is simple and clear, when meeting structure stress, can alleviate significantly the deadweight of hoisting crane.

The two ends of girder 1 adopt the box beam form, and its advantage is to be convenient to being connected and the layout of maintenance crane of girder 1 and rigid leg 2 and flexible leg 3.

Described middle part truss-like girder 4 is segmentation structure, and the segmentation mouth is arranged symmetrically with according to cart span center line, and the segmentation mouth equates apart from the distance of cart span center line, so that the segmentation of middle part truss-like girder 4.

There is flange tap at the two ends of every section truss-like girder 4, between middle part truss-like girder 4 and two ends box type girder and all be connected with flange between each section truss-like girder 4, can to a certain degree adjust span, realize the conversion between different spans, thereby save design cost.

One of specific embodiment of the utility model: described middle part truss-like girder 4 is divided into three sections, wherein in the middle of the segment length, the two ends section is short.

Two of specific embodiment of the utility model: further, when truss-like girder 4 parts of removing two ends only retain interlude truss-like girder 4, also can guarantee the camber requirement of girder, this shipbuilding can be changed into another span with transfer crane, realize the conversion between different spans, meet the demand of different user, to save design cost.

The length of two sections truss-like girders 4 also can be determined according to user's request or market study.

Described truss-like girder 4 adopts the straight seam welded steel pipe splicing, material is Q345C, the process technology of current domestic large-diameter welded steel pipe is ripe, market supply is more comprehensive, and the intersection welding technique of tubing was popularized in recent years, the structure fabrication technique of truss-like is comparative maturity also, and the structure of material and tooling cost and box beam type is very nearly the same.

Girder of the present utility model is truss-like, not only largely reduces the deadweight of a machine, reduces operating unit, and can adjust the hoisting crane span, be more suitable for growing ship building industry demand, the utlity model has novel structure, from heavy and light, connect reliably, with low cost, be convenient to the advantages such as installation.

The above-mentioned embodiment of the utility model, just casehistory, be not only, all in the utility model scope or the change be equal in scope of the present utility model all by the utility model, surrounded.

Claims

1. a shipbuilding transfer crane, comprise girder (1), box rigid leg (2) and heavy in section steel pipe type flexible leg (3), girder (1) is connected with flange with rigid leg (2), with flexible leg (3), by ball pivot, be connected, it is characterized in that: the middle part of described girder (1) is that truss-like girder (4), two ends and rigid leg (2) and flexible leg (3) junction are box-structure, and middle part truss-like girder (4) adopts flange to be connected with two ends box beam type girder.

2. shipbuilding transfer crane according to claim 1, it is characterized in that: described middle part truss-like girder (4) is segmentation structure, between each section truss-like girder (4), all with flange, connects.

3. shipbuilding transfer crane according to claim 2, it is characterized in that: described middle part truss-like girder (4) is divided into three sections, wherein in the middle of the segment length, the two ends section is short.

4. according to the described shipbuilding transfer crane of claim 1 ~ 3 any one, it is characterized in that: described truss-like girder (4) adopts the straight seam welded steel pipe splicing, and material is Q345C.

5. shipbuilding transfer crane according to claim 4 is characterized in that: settle electric, elevator and platform cat ladder in the case structure of described rigid leg (2).