CN203593531U

CN203593531U - Girder of portal crane

Info

Publication number: CN203593531U
Application number: CN201320792390.1U
Authority: CN
Inventors: 田锡生; 吴江; 张弩
Original assignee: Jiangsu Wode Crane Co Ltd
Current assignee: Jiangsu Wode Crane Co Ltd
Priority date: 2013-12-06
Filing date: 2013-12-06
Publication date: 2014-05-14
Anticipated expiration: 2023-12-06

Abstract

The utility model discloses a girder of a portal crane, which comprises web plates, an upper cover plate, a base plate and a plurality of ribbed slabs, wherein the web plates are fixedly connected with the upper plate and the base plate to form a box body structure, each ribbed slab is formed by fixedly connecting a plurality of separating walls, two erect plates and a plurality of support plates; the upper cover plate is longitudinally spliced by multiple upper connecting plates I, multiple upper connecting plates II, and multiple upper connecting plates III according to the increasing thickness; the web plates include the upper web plate, the middle web plate and the lower web plate according to decreasing thickness from top to bottom; the base plate is longitudinally spliced by multiple lower connecting plates I, multiple lower connecting plates II, multiple lower connecting plates III and multiple lower connecting plates IV according to the increasing thickness. The upper cover plate, the base plate and the web plates of the girder of the portal crane are respectively fixedly welded by the plates with different thickness, therefore, the weight of the girder is lessened, the carrying capacity of the girder is ensured, the materials are saved, the manufacturing cost is reduced, the empty weight of the whole machine is lessened and each crane can save materials by 5 percent to 15 percent.

Description

Main beam of gantry crane

Technical field

The utility model relates to a kind of transfer crane load carrier, and especially a kind of main beam of gantry crane from heavy and light, belongs to elevator machinery technical field.

Background technology

Along with the fast development of China's shipping industry, institute the tonneaux de jauge of building increasing, various places shipyard mostly by building berth shipbuilding to dock shipbuilding development, the demand of large-sized gantry crane also increases rapidly.The steel structure weight of existing large-sized gantry crane generally accounts for the more than 75% of complete machine deadweight, and girder is as the main load carrier of transfer crane, and its weight accounts for 60%～70% of complete machine deadweight, conducts oneself with dignity heavier, and manufacturing cost is higher.

Utility model content

The purpose of this utility model is to provide a kind of lightweight, main beam of gantry crane that cost is low.

The utility model is achieved by the following technical programs:

A kind of main beam of gantry crane, comprise two webs that are oppositely arranged, upper cover plate and base plates, it is trapezoidal body structure that two webs, upper cover plate and base plates are fixedly connected into shape of cross section, two bearing plates are separately fixed at two both sides, web upper end that are oppositely arranged, upper cover plate is longitudinally spliced successively by several piece upper junction plate I, several piece upper junction plate II and upper junction plate III, and the thickness of several piece upper junction plate I, several piece upper junction plate II and upper junction plate III is increased progressively by girder two ends to girder middle part; Described web comprises epiplastron, median ventral plate and bottom web, and the thickness of epiplastron, median ventral plate and bottom web successively decreases from top to bottom; Described base plate is longitudinally spliced successively by several piece lower connecting plate I, several piece lower connecting plate II, several piece lower connecting plate III and lower connecting plate IV, and the thickness of several piece lower connecting plate I, several piece lower connecting plate II, several piece lower connecting plate III and lower connecting plate IV is increased progressively by girder two ends to girder middle part; In described girder, be also interval with multiple gussets, dividing plate that each gusset is arranged by polylith parallel interval, two risers that are oppositely arranged and polylith stay bearing plate are formed by fixedly connecting.

The purpose of this utility model can also further realize by following technical measures.

Aforesaid main beam of gantry crane, wherein said upper junction plate I thickness a1 is 13～15mm, the length A 1 of upper junction plate I is 0.4～0.5 times of upper cover plate overall length L, upper junction plate II thickness a2 is 17～19mm, the length A 2 of upper junction plate II is 0.2～0.35 times of upper cover plate overall length L, the thickness a3 of upper junction plate III is 23～25mm, and the length A 3 of upper junction plate III is 0.25～0.3 times of upper cover plate overall length L.

Aforesaid main beam of gantry crane, wherein said epiplastron thickness b1 is 14～16mm, and median ventral plate thickness b2 is 10～12mm, and bottom web thickness b3 is 8～10mm.

Aforesaid main beam of gantry crane, wherein said lower connecting plate I is spliced into by polylith connecting panel the structure that intermediate thin edge is thick, lower connecting plate I interior thickness c1 is 9～12mm, edge thickness c2 is 42～45mm, lower connecting plate II thickness c3 is 28～35mm, lower connecting plate III thickness c4 is 35～40mm, and lower connecting plate IV thickness c5 is 42～45mm.

The distribution of stress situation that while carrying according to crane girder, its cross section stresses is successively decreased to girder two ends from the maximum stress of carrying, the thickness that the utility model forms upper cover plate, base plate and the web of girder adopts respectively the sheet material of different-thickness to be welded into the structure of whole plate, reduce manufacturing cost, alleviate complete machine deadweight, every hoisting crane can be saved material 5%～15%, has not only alleviated girder weight but also has met the strength and stiffness requirement of crane girder.

Advantage and disadvantage of the present utility model, by for illustration and explanation the non-limitative illustration by preferred embodiment below, these embodiment, only provide as an example with reference to accompanying drawing.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the birds-eye view of Fig. 1;

Fig. 3 is that enlarged drawing is looked on a left side of Fig. 1;

Fig. 4 is the I portion amplification view of Fig. 1;

Fig. 5 is the II portion amplification view of Fig. 1;

Fig. 6 is the III portion amplification view of Fig. 1;

Fig. 7 is the IV portion amplification view of Fig. 1;

Fig. 8 is the A-A cutaway view Amplified image of Fig. 1;

Fig. 9 is a portion amplification view of Fig. 2;

Figure 10 is the b portion amplification view of Fig. 2;

Figure 11 is the B-B cutaway view Amplified image of Fig. 3.

The specific embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.

As shown in Fig. 1～Figure 11, the utility model comprises two blocks of webs that are oppositely arranged 1, upper cover plate 2, base plate 3 and be disposed on 16 gussets 4 in girder, upper cover plate 2 and base plate 3 are weldingly fixed on respectively two web being oppositely arranged 1 upper and lower sides, two blocks of webs that are oppositely arranged 1, it is trapezoidal body structure that upper cover plate 2 and base plate 3 are fixedly connected into shape of cross section, be weldingly fixed on respectively two blocks of webs that are oppositely arranged, 1 both sides, upper end for two bearing plates 5 that carry crane track, the every dividing plate 41 that gusset 4 is arranged by 4 parallel interval, 42 and 4 stay bearing plates 43 of two risers that are oppositely arranged are welded and fixed and form.

Upper cover plate 2 is longitudinally spliced successively by 21,2 upper junction plate II 22 of 2 upper junction plate I and upper junction plate III 23, and the thickness of 21,2 upper junction plate II 22 of 2 upper junction plate I and upper junction plate III 23 is increased progressively by girder two ends to girder middle part; Upper junction plate I 21 thickness a1 are 13～15mm, the length A 1 of upper junction plate I 21 is 0.4～0.5 times of upper cover plate 2 overall length L, upper junction plate II 22 thickness a2 are 17～19mm, the length A 2 of upper junction plate II 22 is 0.2～0.35 times of upper cover plate 2 overall length L, the thickness a3 of upper junction plate III 23 is 23～25mm, and the length A 3 of upper junction plate III 23 is 0.25～0.3 times of upper cover plate 2 overall length L; In the present embodiment, upper junction plate I 21 thickness a1 are 14mm, and length A 1 is 0.45 times of upper cover plate 2 overall length L, upper junction plate II 22 thickness a2 are 18mm, length A 2 is 0.3 times of upper cover plate 2 overall length L, and the thickness a3 of upper junction plate III 23 is 24mm, and length A 3 is 0.25 times of upper cover plate 2 overall length L.

Web 1 comprises epiplastron 11, median ventral plate 12 and bottom web 13, the thickness of epiplastron 11, median ventral plate 12 and bottom web 13 attenuate gradually from top to bottom, epiplastron 11 thickness b1 are 14～16mm, median ventral plate 12 thickness b2 are 10～12mm, and bottom web 13 thickness b3 are 8～10mm, in the present embodiment, epiplastron 11 thickness b1 are 15mm, median ventral plate 12 thickness b2 are 12mm, and bottom web 13 thickness b3 are 10mm, and three is equal in length.

Base plate 3 is longitudinally by 2 lower connecting plate I 31, 2 lower connecting plate II 32, 2 lower connecting plate III 33 and lower connecting plate IV 34 are spliced successively, 2 lower connecting plate I 31, 2 lower connecting plate II 32, the thickness of 2 lower connecting plate III 33 and lower connecting plate IV 34 is increased progressively by girder two ends to girder middle part, as Fig. 8, shown in Figure 11, lower connecting plate I 31 is spliced into by an intermediate plate 311 and four connecting panels 312 structure that intermediate thin edge is thick, intermediate plate 311 thickness c1 are 9～12mm, four connecting panel 312 thickness c2 are 42～45mm, the sheet material that lower connecting plate I 31 surroundings are thicker is used for being fixedly connected with crane support upper end.Lower connecting plate II 32 thickness c3 are 28～35mm, lower connecting plate III 33 thickness c4 are 35～40mm, lower connecting plate IV 34 thickness c5 are 42～45mm, in the present embodiment, lower connecting plate I 31 interior thickness c1 are 10mm, edge thickness c2 is 44mm, lower connecting plate II 32 thickness c3 are 30mm, and lower connecting plate III 33 thickness c4 are 38mm, and lower connecting plate IV 34 thickness c5 are 44mm.

In addition to the implementation, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. a main beam of gantry crane, comprise two webs that are oppositely arranged, upper cover plate and base plates, it is trapezoidal body structure that two webs, upper cover plate and base plates are fixedly connected into shape of cross section, two bearing plates are separately fixed at two both sides, web upper end that are oppositely arranged, it is characterized in that: upper cover plate is longitudinally spliced successively by several piece upper junction plate I, several piece upper junction plate II and upper junction plate III, the thickness of several piece upper junction plate I, several piece upper junction plate II and upper junction plate III is increased progressively by girder two ends to girder middle part; Described web comprises epiplastron, median ventral plate and bottom web, and the thickness of epiplastron, median ventral plate and bottom web successively decreases from top to bottom; Described base plate is longitudinally spliced successively by several piece lower connecting plate I, several piece lower connecting plate II, several piece lower connecting plate III and lower connecting plate IV, and the thickness of several piece lower connecting plate I, several piece lower connecting plate II, several piece lower connecting plate III and lower connecting plate IV is increased progressively by girder two ends to girder middle part; In described girder, be also interval with multiple gussets, dividing plate that each gusset is arranged by polylith parallel interval, two risers that are oppositely arranged and polylith stay bearing plate are formed by fixedly connecting.

2. main beam of gantry crane as claimed in claim 1, it is characterized in that: described upper junction plate I thickness a1 is 13～15mm, the length A 1 of upper junction plate I is 0.4～0.5 times of upper cover plate overall length L, upper junction plate II thickness a2 is 17～19mm, the length A 2 of upper junction plate II is 0.2～0.35 times of upper cover plate overall length L, the thickness a3 of upper junction plate III is 23～25mm, and the length A 3 of upper junction plate III is 0.25～0.3 times of upper cover plate overall length L.

3. main beam of gantry crane as claimed in claim 1, is characterized in that: described epiplastron thickness b1 is 14～16mm, and median ventral plate thickness b2 is 10～12mm, and bottom web thickness b3 is 8～10mm.

4. main beam of gantry crane as claimed in claim 1, it is characterized in that: described lower connecting plate I is spliced into by polylith jigsaw the structure that intermediate thin edge is thick, lower connecting plate I interior thickness c1 is 9～12mm, edge thickness c2 is 42～45mm, lower connecting plate II thickness c3 is 28～35mm, lower connecting plate III thickness c4 is 35～40mm, and lower connecting plate IV thickness c5 is 42～45mm.