CN206544575U - A kind of Novel anti-fatigue bracket - Google Patents

Abstract

The utility model proposes a kind of Novel anti-fatigue bracket, the bracket includes a rectangular body, and its bottom has an outwardly toe-end, and the upper surface of the toe-end is connected by the fillet of indent with body；Also include a match board at the top of bracket, its outer surface is the gradually close cancave cambered surface of inner surface from mosaic；The high 15mm of toe-end, the fillet is R20 fillets；The match board is highly 150mm.The utility model can make pillar and bracket itself fatigue strength meet requirement in the case where not increasing stud size, while not influenceing vehicle normal pass, be not take up track area, improve the economic benefit of ship.

Description

A kind of Novel anti-fatigue bracket

Technical field

The utility model is related to Ship Structure field, more particularly to a kind of Novel anti-fatigue bracket.

Background technology

In recent years, causing the problem of hull is damaged more and more due to fatigue, serious results even in ship Sinking, cause the injures and deaths of personnel and the loss of property；The fatigue of hull is the damage process of an accumulation, and fatigue damage is general It is divided into 3 stages, crackle starts to produce, the development of crackle, the fracture of hull structural member.The fatigue problem Producing reason of hull is Because the effect of periodic reciprocating force causes the plastic deformation of hull material, through accumulation after a while, matter is triggered by quantitative change Become, finally produce crack, cause the loss of hull.

Influence fatigue life factor it is more, main cause have it is following some：(1) the delivery lotus suffered by component and static load The ratio of lotus；Ratio is higher, the easier generation fatigue damage of component.(2) frequency of load；Load frequency suffered by component Higher, fatigue life is shorter.(3) weld；Bad weld geometries and welding quality can all influence the tired longevity of ship Life.(4) joint form；Joint form is improper, easily causes fatigue damage.(5) environment；Change such as temperature can cause tired damage It is bad.The above-mentioned various reasons being previously mentioned, are all because they cause node point connection stress concentration, so as to shorten the tired of ship The labor life-span.On ship easily occur stress concentration place be weld seam root and toe-end, the end of bracket, the root of otch, The place of opening, the place of scantling mutation, the vibration frequency place close with the operation of a machine frequency.Therefore, in design With should avoid stress concentration in production process as far as possible, improve fatigue life.

For Ship Structure, because the asymmetry of ship load such as stormy waves under roll behavior will be produced in hull bottom Raw larger cross force, and hull top is influenceed to cause goods due to the gravity of goods and by rolling or heaving uniform acceleration Inertia force effect also produce larger cross force, although this two parts cross force is in opposite direction, the horizontal stroke of a superposition can be formed To moment of flexure, hull top and the bottom are caused to occur shear action, and then cause hull transverse frame to occur oblique water chestnut or diagonal distortion.Automobile Cargo ship is often not provided with or less setting transverse bulkhead, hull to ensure current facility of the vehicle in cargo hold in cargo area Racking will be undertaken completely by horizontal strong frame.It is past in the span of wagon deck stringers and deck transverse, cargo hold area to reduce It is past that single or double pillar is set.

It is high stress areas in pillar and wagon deck intersecting area, in pillar bottom, laterally or longitudinally bracket is met for increase This region fatigue strength, prevents fatigue crack from producing.To make the fatigue strength satisfaction of deep bracket itself toe-end and free margins will Ask, such pillar bottom bracket need to make soft toe form, i.e., need to extend relatively large distance, generally higher than 200mm above deck.And In shipping transport, for the facility of vehicle pass-through, while in order to increase track area as far as possible to obtain maximum economic benefit, Ask post area not increase as far as possible under bracket, limiting case and limitation is made to bracket development length：Beam direction must not exceed 100mm；Captain direction must not exceed 150mm.

Bracket fatigue is divided into bracket toe-end fatigue, free margins fatigue and knee heel fatigue.Increase fatigue in pillar bottom After bracket, focus is transferred to the free margins and toe-end of bracket by pillar and deck connection.The shape of bracket need to be designed carefully To meet bracket free margins, toe-end and the fatigue strength of root simultaneously.

Therefore, we are necessary to improve such a structure, to overcome drawbacks described above.

Utility model content

The tired rocket type bracket of new anti-pillar that the utility model is proposed can solve strut ends fatigue problem, not shadow Vehicle pass-through is rung, track area is not take up, improves the economic benefit of ship.

The technical scheme that the utility model is used by solution its technical problem is：

A kind of Novel anti-fatigue bracket, the bracket includes a rectangular body, and its bottom has an outwardly toe End, the upper surface of the toe-end is connected by the fillet of indent with body.

It is preferred that, a match board is also included at the top of bracket, its outer surface is gradually inner surface is close from mosaic Cancave cambered surface.

It is preferred that, the high 15mm of toe-end, the fillet is R20 fillets.

It is preferred that, the match board is highly 150mm.

The utility model has the advantage of：

1st, bracket lower end is rectangular body, and its lower end is wide, and thickness of slab is big, the panel that can be added as pillar, increases pillar Modulus of section during transverse curvature, improves bending resistance, reduces end stress.

2nd, bracket lower end is big, and the more conventional bracket of fatigue strength of new knee heel is big.

3rd, the match board thickness of slab of bracket upper end is small, coordinates orthodrome transition so that bracket stress is seamlessly transitted, and reduces bracket Toe-end stress intensity, bracket free margins and toe-end fatigue strength can obtain effective guarantee.

4th, using longitudinal rocket type bracket, longitudinal extent is 150mm, it is not necessary to additionally increase transverse bracket, it is ensured that Vehicle pass-through it is smooth, be not take up track area, effectively improve economic benefit.

Brief description of the drawings

Fig. 1 be the utility model proposes a kind of Novel anti-fatigue bracket structural representation.

Fig. 2 be the utility model proposes a kind of Novel anti-fatigue bracket it is new anti-tired using four pieces in pillar captain direction The structural representation of labor bracket.

Numeral and the corresponding component title represented by letter in figure：

1st, body 2, toe-end 3, match board

Embodiment

In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under Face combines diagram and specific embodiment, and the utility model is expanded on further.

As depicted in figs. 1 and 2, the utility model proposes a kind of Novel anti-fatigue bracket, the bracket includes one rectangular Shape body, its bottom has an outwardly toe-end, and the upper surface of the toe-end is connected by the fillet of indent with body.

It is preferred that, a match board is also included at the top of bracket, its outer surface is gradually inner surface is close from mosaic Cancave cambered surface.

It is preferred that, the high 15mm of toe-end, the fillet is R20 fillets.

It is preferred that, the match board is highly 150mm.

Bracket lower end is rectangular body, and its lower end is wide, and thickness of slab is big, and the panel that can be added as pillar, increase pillar is horizontal To modulus of section during bending, bending resistance is improved, reduces end stress.

Bracket lower end is big, and the more conventional bracket of fatigue strength of new knee heel is big.

The match board thickness of slab of bracket upper end is small, coordinates orthodrome transition so that bracket stress is seamlessly transitted, and reduces bracket toe Stress intensity is held, bracket free margins and toe-end fatigue strength can obtain effective guarantee.

Using longitudinal rocket type bracket, longitudinal extent is 150mm, it is not necessary to additionally increase transverse bracket, it is ensured that Vehicle pass-through it is smooth, be not take up track area, effectively improve economic benefit.

The new tired bracket of anti-pillar uses different thicknesss of slab, and bracket lower end is thick, and upper end is thin, lower toe-end R20 circular arc, upper end Coordinate orthodrome, make the submissive transition of bracket, the fatigue strength of two bracket toe-ends, free margins and knee heel can be met.Work as branch When post fatigue strength is difficult to satisfaction and required, in pillar captain direction using four pieces of Novel anti-fatigue brackets, it can not increase additionally The fatigue strength of pillar is met in the case of transverse bracket.

General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification Simply illustrate principle of the present utility model, the utility model can also on the premise of the utility model spirit and scope are not departed from There are various changes and modifications, these changes and improvements are both fallen within the range of claimed the utility model.The utility model will Protection domain is asked to be defined by appended claims and its equivalent.

Claims (4)

1. a kind of Novel anti-fatigue bracket, it is characterised in that：The bracket includes a rectangular body, and its bottom is outside with one The toe-end of protrusion, the upper surface of the toe-end is connected by the fillet of indent with body.

2. a kind of Novel anti-fatigue bracket according to claim 1, it is characterised in that：Also include a split at the top of bracket Plate, its outer surface is the gradually close cancave cambered surface of inner surface from mosaic.

3. a kind of Novel anti-fatigue bracket according to claim 1, it is characterised in that：The high 15mm of toe-end, the circle Angle is R20 fillets.

4. a kind of Novel anti-fatigue bracket according to claim 2, it is characterised in that：The match board is highly 150mm.