CN1644441A - Side board for truck and its manufacture - Google Patents
Side board for truck and its manufacture Download PDFInfo
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- CN1644441A CN1644441A CN 200410104495 CN200410104495A CN1644441A CN 1644441 A CN1644441 A CN 1644441A CN 200410104495 CN200410104495 CN 200410104495 CN 200410104495 A CN200410104495 A CN 200410104495A CN 1644441 A CN1644441 A CN 1644441A
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Abstract
The present invention provided a gate for a load platform of truck having a fine outside appearance. The gate for the load platform of the truck has a closed section part 2 formed by bending back the end 21 of a plate so that its tip 22 confronts the body of the plate, wherein the body part of the plate positioned in the neighborhood of the place confronting the tip 22 of the end 21 of the plate and on the side where the closed section part 2 is formed is folded toward the inside of the closed section part 2, and the closed section part 2 is formed by molding through welding of the end 21 of the plate to the inward directed part of the closed section part 2 folded.
Description
Technical field
The present invention relates to a kind of truck wagon box baffle plate, relate in particular to a kind of truck wagon box baffle plate that has feature in the closed sectional shape portion that is formed at the baffle plate both ends.In addition, the manufacture method that also relates to this baffle plate.
Background technology
Shown in Fig. 7 (a), be formed with around the wagon box of truck 100 and be used to prevent that object that wagon box is stacked from turning over the baffle plate (stopping) that falls.This baffle plate comprises side shield 110 and back shield 120, and its shape is substantially the same, and punching press or roll-forming are carried out in the two ends of the steel plate of thin plate, forms closed sectional shape portion at its two ends.Realize the reinforcement of intensity, rigidity thus, and with the form that the closed sectional shape portion that is positioned at two ends is in upper-lower position erect be arranged at wagon box around.
Next the structure and the manufacture method of the baffle plate of conventional example are described with reference to Fig. 7 (b-1), Fig. 7 (b-2).Shown in Fig. 7 (b-1), baffle plate 110 by, make the end warpage of steel plate, roughly be tetragonal closed sectional shape portion 111,112 and the wall portion 113 between them and constitute.And, at the position that is extended to wall portion 113 from closed sectional shape portion 111,112, be formed with the flange part 111a, the 112a that are in coincidence status by the end of warpage and steel plate main body.Then, making baffle plate by welding this flange part 111,112, and by welding miscellaneous parts such as hinge thereon and carry out application, thereby can be set on the wagon box.Here, welding method is undertaken by all methods such as spot welding, the weldering of rolling seam, flash welding, laser welding.In addition, in Fig. 7 (b-2), as shown by arrows, expressed the example that welds by dot welding method.And, in following patent documentation 1 (the real fair 7-8383 communique of Japanese Utility Model), the manufacture method of example baffle plate is in the past also disclosed.
Summary of the invention
So, as mentioned above, when engaging flange part need be set, but, can realize its lightweight if utilize laser welding, laser braze welding welding then not to need this flange part with spot welding.Fig. 8 (a) represents this example.As shown in the drawing, the end 121 of steel plate is bent into roughly quadrangle, make its front end 122 and steel plate (wall portion 140) relative butt or approaching itself.Then shown in Fig. 8 (b), its front end 122 partial sum steel plates itself are welded by laser welding etc.
At this moment, weld part F11, promptly steel plate carrying out the high welding of reliability, thereby needs to carry out both gaps the connecting element of the fastening steel plate that high precision manages during welding through crooked leading section and the gap between the steel plate itself in case than difficulty in defecation.Specifically, member is a sheet material, thereby through the inclination that crooked front end position has, also has fluctuating.Expression is that an example does not have the fixing connecting element in gap to it when welding among Fig. 8 (c).As shown in the figure, the inboard of closed sectional shape portion needs a connecting element 131, also fixes the position at front end position 122 simultaneously with the connecting element in the outside shown in double-type, the label 132 with it.And, can also be by the outside connecting element shown in the label 133 being set and making it to get off to adjust front end 122 and steel plate itself is gap between the wall portion 140.
But fix with a plurality of connecting elements as mentioned above, take time and energy very much in the time of will producing welding, and the problem of manufacturing cost increase.And closed sectional shape portion, the about 2[m of the length on side shield sometimes], be difficult to carry out the setting of connecting element.
In addition, also influential to the outward appearance after the welding.For example produce such problem, promptly shown in Fig. 9 (a-1), when utilizing laser welding to connect welding, can shown in Fig. 9 (b), form the perforation welded condition or can cause degraded appearance from this state of weld seam F12 of welding direction opposition side affirmation as the heat affecting position.And this problem is with respect to this situation of above-mentioned flange part 111a that is formed with shown in Fig. 9 (a-2), though when carrying out laser welding too.Can consider also that to this gap to laser output, spot position, steel plate, the deviation of steel plate thickness, the deviation of plating amount control,, but, be very difficult to realize than spended time and cost so that weld seam can't be seen from the outside.
On the other hand, think to make steel plate itself and leading section butt and weld the welding that needs high reliability seamlessly, but for antirust and steel plate is carried out this problem of the weld defect of generation then being arranged zinc-galvanized the time.Specifically, if zincing steel sheet is carried out laser irradiation, zinc evaporation the expand pore (internal defect of air bubble-shaped) that is caused, the jet arc crater that causes (zinc fume of the ejection of expanding welding material is blown afloat and form hole) take place just.
Thereby, the objective of the invention is to, a kind of deficiency that above-mentioned conventional example has of improving is provided, especially when improving outward appearance, can realize the raising of baffle plate opening and closing operations, the raising of bunkerage by expendable weight, and the truck wagon box of the reduction of productive costs is with the manufacture method of baffle plate, this baffle plate.
Therefore, the present invention is a kind of truck wagon box baffle plate, have make the sheet material end return warpage so that its front end is relative with this sheet material main body the closed sectional shape portion of moulding, and take such structure: make near the closed sectional shape portion that is positioned at the position relative form the inside warpage of the sheet material base portion of side towards closed sectional shape portion with the front end of sheet material end, end and this process warpage with sheet material partly welds towards closed sectional shape portion in-to-in simultaneously, makes the moulding of described closed sectional shape portion.Preferably constitute this moment, the truck wagon box is substantially vertically being erect when being provided with respect to the inner bottom surface of truck wagon box with baffle plate, and the position that makes described closed sectional shape portion through warpage be welded with the sheet material end in the in-to-in part forms that with respect to this setting direction to be set vertical substantially.
And, can also be with above-mentioned formation rephrase the statement hereinafter shown in baffle plate.Specifically, the present invention is a kind of truck wagon box baffle plate, have make the sheet material end return warpage so that its front end is relative with this sheet material main body the closed sectional shape portion of moulding, and take such structure: form on the sheet material base portion of side near the closed sectional shape portion that is positioned at the position relative with the front end of sheet material end, be formed with the form that is convex with the outside towards first joggling part of the inside warpage of this closed sectional shape portion be second joggling part of the form warpage of concavity with the outside in this closed sectional shape portion in closed sectional shape portion, to be shaped to step shape, welded blank end between first joggling part and second joggling part makes the moulding of closed sectional shape portion simultaneously.At this moment, as described above, preferably constitute, the truck wagon box is substantially vertically being erect when being provided with respect to truck wagon box inner bottom surface with baffle plate, the position of welded blank end in the position between first joggling part and second joggling part is being formed direction is set vertical substantially with respect to this setting.Also wish to constitute, make described position with the step shape moulding further towards the outside warpage of closed sectional shape portion, with the concavity moulding.
In addition, can also utilize a kind of like this truck wagon box to make this baffle plate with the manufacture method of baffle plate, it is characterized in that, comprise following operation: make the sheet material end return warpage, make the sheet material base portion that is positioned near the closed sectional shape portion formation side the position relative operation simultaneously towards the inside warpage of closed sectional shape portion with the front end of sheet material end so that its front end is relative with this sheet material main body; Push so that the sheet material end with through warpage towards closed sectional shape portion in-to-in part butt or approaching operation; And from the operation that towards closed sectional shape portion in-to-in partial sum sheet material end both weld of this end side with step shape portion.
By above-mentioned formation, in order to realize the weld of the closed sectional shape portion that the truck wagon box forms with the high strength of baffle plate, be formed at from the baffle face towards closed sectional shape portion in-to-in part, that is to say the position that is formed at recessed baffle interior, thereby be not easy to find weld seam that outward appearance is in shape from the outside.Especially by being welded in the position that the warpage on the basic vertical direction of direction is set in the setting with baffle plate itself, the more difficult weld seam of finding from the outside can be realized the improvement of outward appearance.And the sheet material end is welded in through the part of warpage towards closed sectional shape portion internal direction, thereby welded condition is more more stable than relative welding with the plate face, and the welding prelocalization is also stable, is convenient to welding operation.In addition, can further become concavity, strengthen the sectional area of closed sectional shape portion, realize the reinforcement of baffle plate rigidity by making the position that forms step shape towards the outside of closed sectional flexagon.
Except above-mentioned formation, also wish to constitute, make the male member butt of the sheet material end and second joggling part, make this end and the position configured separate between first joggling part and second joggling part simultaneously, the sheet material end is welded, make the moulding of closed sectional shape portion.At this moment, especially wish to constitute, the male member formation planar portions at second joggling part makes described sheet material end and this planar portions butt simultaneously, can also weld between the front end of position on the end of sheet material and the second joggling part butt and this end.
Thus, but the position of the sheet material end of the held stationary and the second joggling part butt, the weld is not to be in the coincidence welded condition simultaneously, but be formed with the gap in this weld, even if thereby to implemented plating as the sheet material of welding object thing, the effusion space of the gas that produces in the time of also can forming welding suppresses weld defect.At this moment, form the planar portions of second joggling part, and make the sheet material end with face and this planar portions butt, the positioning stablity of end can carry out more failure-free welding thus.And, by between abutting part and front end, welding, the gap that the gas that produces is used when discharging welding can be formed reliably, and the welding assembly of unified quality can be obtained.
In addition, except above-mentioned formation, also wish to constitute, have the front end of the form setting sheet material end in gap with the sheet material main body relative with respect to this front end.Thus, just avoid the front end and the sheet material main body butt of sheet material end,, suppress the situation that error impairs outward appearance so can prevent to weld with wall portion as this main body.And, can suppress the weld defect that the front end bending etc. of sheet material end is caused, can not need to design high goods precision, and reduce manufacturing cost.
And, can fetch the baffle plate moulding of the above-mentioned shape of welding by laser beam welding.Therefore compare with spot welding, can realize not needing to relax the weld, i.e. the position approaching between first joggling part and second joggling part with the sheet material end, and reduce material, alleviate product weight.
The present invention constitutes as mentioned above and works, so just, can form the good truck wagon box baffle plate of outward appearance, thereby not need to carry out special fine limit work and be careful the outward appearance flaw, just can effectively suppress apparent defect and produce, also manufacturing cost can be reduced, product weight can also be alleviated.And, owing to be successive welding, thereby compare with spot welding, can realize the raising of intensity and rigidity.In addition, welding step is easy, also can further reduce manufacturing cost.
Description of drawings
Fig. 1 is the section-drawing that the truck wagon box is used the formation of baffle plate among the expression embodiment 1.
Fig. 2 (a) is the section-drawing of the formation of the upside closed sectional shape portion of baffle plate among the expression embodiment 1, the instruction diagram of the form when Fig. 2 (b) is its welding of expression.
Fig. 3 (a) is the section-drawing of the formation of the downside closed sectional shape portion of baffle plate among the expression embodiment 1, and Fig. 3 (b) is the instruction diagram of the form when its welding is shown.
Fig. 4 (a) is the section-drawing of the formation of the variation of the upside closed sectional shape portion of baffle plate among the expression embodiment 1, and Fig. 4 (b) is its local amplification profile.
Fig. 5 is the section-drawing of the formation of the closed sectional shape portion that the truck wagon box is used baffle plate among the expression embodiment 2.
Fig. 6 is that expression has the section-drawing of the truck wagon box of closed sectional shape portion shown in Figure 5 with the formation of baffle plate.
Fig. 7 is the instruction diagram of the truck wagon box of conventional example with baffle plate.What Fig. 7 (a) represented is the overall pattern of truck.What Fig. 7 (b-1) represented is the sectional stereogram of side shield, and what Fig. 7 (b-2) represented is its front view.
Fig. 8 represents is the formation of the closed sectional shape portion that forms in the baffle plate of conventional example.Fig. 8 (a) is the section-drawing of its formation of expression, Fig. 8 (b) expression be state after the welding.Fig. 8 (c) expression be state behind the connecting element used when having disposed welding.
Fig. 9 represents is the formation of the closed sectional shape portion that forms in the baffle plate of conventional example.Fig. 9 (a-1), Fig. 9 (a-2) are the section-drawings of the state after its formation of expression and the welding.Fig. 9 (b) is the sectional stereogram of expression weld seam form.
The specific embodiment
The truck welding has closed sectional shape portion with baffle plate, and this closed sectional shape portion is by making sheet material end warpage, moulding being welded in this sheet material end and sheet material main body.Baffle plate of the present invention has feature in the weld of closed sectional shape portion.It is characterized in that, when the baffle plate setting is arranged on the truck wagon box, the sheet material that will become wall is partly gone up the inside warpage of the part of formation closed sectional shape portion towards this closed sectional shape portion, and welds in the sheet material end of this warpage part and formation closed sectional shape portion.In other words, under the state that baffle plate itself is substantially vertically erect with respect to the wagon box table top be provided with, make near the weld of closed sectional shape portion to the direction warpage of wagon box table top basic horizontal, weld in this part.Thus, the weld is set at recessed closed sectional in-to-in position, especially is positioned on the face substantially parallel with direction of visual lines, thereby can avoids in the visual situation of discovering the weld when baffle plate is seen in the front outward appearance being improved.The following describes specific embodiments of the invention.
(embodiment 1)
Referring to figs. 1 through Fig. 4 the first embodiment of the present invention is described.Fig. 1 is the section-drawing of expression truck wagon box of the present invention with the formation of baffle plate.Fig. 2 to Fig. 4 is as the section-drawing of the formation of the closed sectional shape portion of the part of baffle plate in the expression present embodiment.
(overall formation)
Truck wagon box of the present invention as described in above-mentioned conventional example, is arranged at the side shield or the back shield (with reference to Fig. 7) of truck wagon box periphery with baffle plate (stopping) 1 for setting.In addition, exemplify side shield in the present embodiment and describe, but back shield also is same formation.Be called baffle plate to place an order.
As shown in Figure 1, baffle plate 1 rotates by hinge 102 and is arranged at freely on the wagon box 101 of truck (not shown), during lade baffle plate is fallen, and then substantially vertically erects with respect to the wagon box table top during transportation to be provided with and to fix in order to avoid goods falls.This Fig. 1 represents is to erect state when being provided with respect to the wagon box table top.
And baffle plate 1 is formed by single steel plate, is formed with closed sectional shape portion 2,3 at its both ends.In addition for convenience of explanation, consider the state that baffle plate 1 is erect when being arranged at the truck wagon box, the closed sectional shape portion that will be positioned at Fig. 1 top is called upside closed sectional shape portion 2, is positioned at the downside closed sectional shape portion 3 that is called of below.And, be arranged in above-mentioned part, present embodiment between the two and then be called wall portion 4 by the position that single steel plate forms.But closed sectional shape portion 2,3 also can only form in the either party end of baffle plate.
And, on the steel plate that forms baffle plate 1, its surface has been implemented zinc-plated with antirust.And, constitute with raw MAT'L and the thickness of slab that is fit to punch forming or roll-forming.But its material, thickness of slab are not limited to above-mentioned explanation.
(closed sectional shape portion)
Closed sectional shape portion 2,3 is formed at the both ends of the steel plate that constitutes baffle plate 1, below mainly the shape and the formation of upside closed sectional shape portion 2 described.In addition, also downside closed sectional shape portion 3 is described, but then omit its explanation for identical formation.
At first, the section shape of Fig. 2 (a) expression closed sectional shape portion 2.As shown in the drawing, the end 21 of steel plate is stamped or roll-forming is quadrangle form roughly, and the face that is flexed into its front end 22 and steel plate main body and itself is wall portion 4 is relative.Specifically, be flexed into the front end 22 of end 21 to itself returning, form closed sectional.In addition, closed sectional shape portion 2 just similarly forms on truck wagon box length direction on side shield the time, therefore just similarly forms on the ora terminalis of steel plate.Concerning back shield, then on the Width of truck wagon box, similarly form in addition.
Baffle plate in the conventional example is to weld on the relative position of front end 22 that returns warpage and steel plate main body (wall portion 4), but the application such as following difference.Specifically, taked following formation, make the position that is positioned at closed sectional shape portion 2 near the steel plate base portion the position relative and forms sides (with the continuous part of wall portion 4) with the front end 22 of steel plate end 21, inside warpage to this closed sectional shape portion 2, and partly welding with the closed sectional of the end 21 of steel plate and this process warpage towards in-to-in.Below this is described further.In addition for convenience of explanation, begin from front end 22 1 sides that 4 limits of the closed sectional shape portion 2 of quadrangle form are called the first limit portion 23, the second limit portion 24, the 3rd limit portion 25, the 4th limit portion 26 with forming roughly.But the shape of closed sectional shape portion 2 is not limited to quadrangle.
The first limit portion 23 that forms above-mentioned closed sectional shape portion 2 is front end 22 residing limits, with as this front end 22 the continuous limit of the wall portion 4 of right steel plate main body then be the 4th limit portion 26.The 4th limit portion 26 is formed with to the outstanding male member of the internal direction of closed sectional shape portion 2, looking from the closed sectional outside on the contrary is recess 27.This recess 27 is near the relative position of the front end 22 of end 21, and warpage becomes towards the inside of closed sectional shape portion 2 and with end 21 and continues side by side.Specifically, the 4th limit portion 26 for the steel plate main body, in the end 21 front end 22 closed sectional shape portion 2 one sides at right position, be flexed in the outside of this closed sectional shape portion 2 and be convex, this joggling part 27a with respect to wall portion 4 promptly the 4th limit portion 26 basically with the right angle warpage.In addition, this joggling part is called the first joggling part 27a.And, in the in-to-in four limit portion 26 of the first joggling part 27a warpage, be the further warpage of form of concavity with the outside in this closed sectional shape portion 2 towards closed sectional shape portion 2, form the second joggling part 27b.In other words, since the 4th limit portion 26 that the first joggling part 27a continues, show the right angle warpage greatly, continue substantially parallel with wall portion 4 to the direction of leaving end 21 with the form that staggers side by side with end 21.Therefore, near the shape of the 4th limit portion 26 21 relative positions, end forms recessed closed sectional shape portion 2 in-to-in step shapes.But the upside closed sectional shape portion 2 of explanation among Fig. 2 (a), the part that makes recessed closed sectional shape portion 2 is warpage laterally further, thereby forms concavity.Like this, recess 27 is looked from the 4th limit portion 26 outsides, is flexed into roughly quadrangle form towards the inside of closed sectional shape portion 2.
Here, an edge lengths of above-mentioned closed sectional shape portion 2 for example is 30[mm], the width D 1 of recess 27 is 3～5[mm], depth D 2 is 5[mm].But this size is an example only, is not limited to this.And the shape of recess 27 also is not limited to roughly quadrangle.
By forming recess 27 as mentioned above, to be welded on through the end 21 that warpage constitutes the steel plate on first limit 23 side of this recess 27, promptly from the 4th limit portion 26 warpages on the step shape pars intermedia 27c of the in-to-in part (part between the first joggling part 27a and the second joggling part 27b) of closed sectional shape portion 2, just obturation and moulding of closed sectional shape portion 2.Fig. 2 (b) expresses this welded condition.As shown in the figure, for the approaching side by side end 21 of above-mentioned step shape pars intermedia 27c, by outside on one side supplying with stopping, on one side with laser welding gun L1 illuminating laser beam LB, to realize welding with stopping feedway L2 from closed sectional shape portion 2.Further specify the formation of weld this moment.In addition, what Fig. 2 (b) demonstrated is to supply with stopping to carry out the situation of laser welding, but as hereinafter described, also can weld by the laser pricker.
At first, be positioned near the position the front end 22 of the first limit portion 23, be positioned at the face of inside one side of closed sectional shape portion 2, with the male member butt of the second joggling part 27b of recess 27.At this moment, the first limit portion 23 with form from the second limit portion, 24 warpages with respect to the wall portion 4 vertical forms that more favour closed sectional shape portion 2 one sides (in Fig. 2 (a), being the left side) of comparing, thereby be flexed into vertical step shape pars intermedia 27c and not parallel substantially with respect to wall portion 4.So, the end 21 of steel plate from the position of the male member butt of the second joggling part 27b to front end 22 and step shape pars intermedia 27c configured separate.Near the step shape pars intermedia 27c of this moment and the front end of the first limit portion 23 22 clearance D 3 can be set at for example 0.1～0.2[mm].And, during welding, shown in Fig. 2 (b), can make to the 4th limit portion 26 1 sides (being downside among Fig. 2 (b)) and push (reference arrow Y1) second limit portion 24, push connecting element 31 and the second limit portion 24 and the first limit portion, 23 butts of (reference arrow Y2) first limit portion 23 to the 3rd limit portion 25 1 sides (being the left side among Fig. 2 (b)) simultaneously, thus, suitably form above-mentioned clearance D 3 in the weld.In addition, connecting element 31 is not limited to one, can also can push steel plate by constituting more than 2.
And, to the length of the front end 22 of the first limit portion 23, for when forming closed sectional shape portion 2, not making front end 22 and wall portion 4 butts, and form the length of clearance D 4 with respect to this wall portion 4.This clearance D 4 is for example 2～3[mm].Here, these clearance D 4 values are not limited thereto.And the clearance D 3 between the front end 22 of above-mentioned step shape pars intermedia 27c and end 21 also is not limited to above-mentioned value.
The formation of the downside closed sectional shape portion 3 of the end that is formed at above-mentioned steel plate opposition side then is described with reference to Fig. 3.Fig. 3 (a) illustrates the section shape of downside closed sectional shape portion 3, the state during Fig. 3 (b) expression welding.
This downside closed sectional shape portion 3 adopts the formation roughly the same with above-mentioned upside closed sectional shape portion 2, but difference is, is not formed on the recess 27 (with reference to Fig. 2 (a)) that forms in the 4th limit portion 26.And the 4th limit portion 26 of this closed sectional shape portion 3 is by forming step shape with above-mentioned first, second joggling part 27a, joggling part 28a, 28b that 27b is identical.Specifically, the 4th limit portion 26 to the inside warpage of closed sectional shape portion 3, the 4th limit portion 26 forms step shape portion 28 with respect to the private side that is positioned at closed sectional shape portion 3 for the wall portion 4 of steel plate main body near the position relative with steel plate front end 22.
And, shown in Fig. 3 (b), can make near the front end 22 of end 21 of the first limit portion 23 abreast near the step shape pars intermedia 28c between the first joggling part 28a and the second joggling part 28b, this position is welded, make 3 moulding of closed sectional shape portion thus.What in addition, Fig. 3 (b) institute example was represented is the situation that 21 sides are welded with soldering material feeding device L3 supply soldering material, one side illuminating laser beam LB from the end on one side.Under this occasion, at the opposition side of laser beam irradiation side, to be step shape pars intermedia 28c the weld seam that heat affected zone F2 that laser beam causes forms occurs at the outer side of closed sectional shape portion 3, but as hereinafter described, be in indiscoverable position, thereby can suppress damage outward appearance.
In addition, the formation of weld, for example, make the end 21 and the second joggling part 28b butt, and make the formation that its front end 22 separates with step shape pars intermedia 28c (forming clearance D 3), be set at the formation (forming clearance D 4) of the front end 22 of avoiding end 21 and the length of wall portion 4 butts etc., since identical with the situation of above-mentioned upside closed sectional shape portion 2, its explanation of Therefore, omited.And welding method can not be a laser braze welding also, equally with above-mentioned upside closed sectional shape portion 2 adopts stopping to carry out laser welding.
(manufacture method)
Next the manufacture method of above-mentioned closed sectional shape portion 2 is described.In addition, be that example describes hereinafter, but downside section shape portion 3 is also substantially the same with upside closed sectional shape portion 2.
At first, by the end 21 of punch forming, roll-forming steel plate, as shown in Figure 2, bending is roughly quadrangle to form closed sectional respectively.And, meanwhile or front and back, also moulding of recess 27 (occasion of downside is a step shape portion 28).At this moment, step shape pars intermedia 27c is with the in-to-in direction that extends to closed sectional shape portion 2 and the uneven form moulding of continuity direction of the first limit portion 23.Specifically, step shape pars intermedia 27c be flexed into to wall portion 4 vertical substantially direction continuity, and 23 in the first limit portion comes moulding to bend to the form that tilts to closed sectional shape portion 2 sides with respect to wall portion 4.And, adjust the length of the first limit portion 23 and make its bending so that the front end 22 of end 21 produces clearance D 4 with respect to wall portion 4.
Then configuration is pushed the connecting element 31 of the first limit portion 23 and the second limit portion 24 towards the internal direction (arrow Y1, Y2 in reference to Fig. 2 (b)) of closed sectional shape portion 2, makes near the part of closed sectional shape portion 2 private sides the front end 22 of steel plate end 21 and the male member butt of the second joggling part 27b that forms recess 27 (occasion of downside is a step shape portion 28).Like this, front end 22 sides of end 21 just are in and are configured to the state that has clearance D 3 with step shape pars intermedia 27c.
And, under this state by with laser welding gun L1 from illuminating laser beam LB between the front end 22 of the position of steel plate end 21 sides pair and the second joggling part 27a butt and this end 21, come step shape pars intermedia 27c and end 21 are welded.
Can make truck wagon box shown in Figure 1 baffle plate 1 by making 2,3 moulding of closed sectional shape portion as mentioned above.In addition, the truck wagon box vertically continues on the direction of front direction and inside depth with the paper of baffle plate 1 with respect to this accompanying drawing among this figure.
And, by moulding as mentioned above, the weld of the closed sectional shape portion 2,3 that forms for the high strength of realizing baffle plate 1 is formed at from the surface of baffle plate 1 towards closed sectional shape portion 2,3 in-to-ins part, is recessed closed sectional shape portion in-to-in position, thereby be difficult for finding to become the outstanding baffle plate of outward appearance by weld seam from the outside.Especially with respect to this setting the vertical substantially direction of direction is set by will on wagon box, erectting baffle plate 1 be set the time as the warpage direction setting of step shape pars intermedia 27c, the 28c of weld, in other words, be set at direction with respect to wagon box table top 101 basic horizontal, manifest weld seam in the face substantially parallel with respect to direction of visual lines, this weld seam then is difficult for finding from the outside more.Fig. 1 and Fig. 2 (b) represent this situation, very clear, when outside transverse observation is in the baffle plate 1 of erectting this state on the truck that is arranged on (with reference to label E), is formed at the heat affected zone F2 that weld seam F1, laser braze welding that the perforation welding of this weld caused caused and is formed at indiscoverable position (with reference to the arrow of label E).Improvement that can be by this outward appearance does not need special fine limit work, to being careful of outward appearance flaw, and prevents that effectively apparent defect from producing.And when taking laser braze welding, can make steel plate end obturation reliably, can prevent that sealing etc. enters closed sectional shape portion 2,3, thereby the coating operation of the defeasible aquaseal of implementing as rust preventing.Based on above reason, can suppress the increase of manufacturing cost, the time of being spent, but also can suppress the increase of weight.And, owing to be successive welding, thereby compare with existing spot welding situation, can realize the intensity of closed sectional shape portion, the raising of rigidity.And, for example, shown in Fig. 7 (a), be 640[mm if be installed on ground to the height H 1 of wagon box table top], be 930[mm to the height H 2 of baffle plate 1 upper end] baffle plate of the truck that this vehicle body is lower, just above-mentioned effect is more obvious.
In addition, the weld is to weld approaching to overlap under the state of welding, though thereby as the end face of the front end 22 of end 21 with as the welding of the plate face of wall portion 4 intensity is had restriction by what conventional example was carried out, can realize the firm welding higher than this welded condition reliability.At this moment, can make the end 21 and the second joggling part 27b butt come this end 21 is positioned, thereby can stablize the location before welding, welding operation is convenient.And, carry out this welding by utilizing laser welding, compare with spot welding, just do not need to relax as the step shape pars intermedia 27c of weld and end 21 near the position, can realize the minimizing of material, thereby can alleviate the weight of goods.
And, be to form clearance D 3 between step shape pars intermedia 27b and the end 21 between the parts of weld, even if thereby to electroplating as the sheet material of welding object thing, also can form the space of the gas evolution that allow at that time to be produced, suppress weld defect.And, can avoid the clearance D 4 of steel plate front end 22 and wall portion 4 butts by formation, suppress end 21 and 4 welding of wall portion, can suppress error and deface.In addition, can suppress the weld defect that the protuberance etc. of the front end 22 of end 21 is caused, not need design to improve the goods precision, can realize the reduction of manufacturing cost.And, so also play the effect of the gas evolution when allowing the welding that above-mentioned plating caused.
In addition, upside closed sectional shape portion 2 compares with downside closed sectional shape portion 3, can strengthen the area that forms closed sectional, thereby can also realize the raising of baffle plate rigidity except above-mentioned effect.
(variation)
Here, characteristic of the present invention is described, i.e. the variation of the closed sectional shape portion 2 of baffle plate 1 with reference to Fig. 4.In addition,, also go for downside closed sectional shape portion 3, can also be applicable to difform closed sectional shape portion though be that example describes with above-mentioned upside closed sectional shape portion 2.
Closed sectional shape portion 2 shown in Fig. 4 (a), the shape of its recess 27 is with mentioned above different.Specifically, form the shape difference of the second joggling part 27b of recess 27, on the male member of this joggling part 27b, be formed with planar portions.The enlarged drawing of Fig. 4 (b) is represented its details.And, can make closed sectional medial surface and this planar portions 27b butt of steel plate end 27b, the location of end 21 is more stable when making welding thus, can carry out more failure-free welding.
Next with reference to Fig. 5 to Fig. 6 second embodiment of truck wagon box of the present invention with baffle plate 10 is described.Fig. 5 is the section-drawing that closed sectional shape portion 5 constitutes in the expression present embodiment, and Fig. 6 is the section-drawing of the formation of the baffle plate of expression with closed sectional shape portion 5 shown in Figure 5.
The truck wagon box is with the formed closed sectional shape of baffle plate 10 portion 5 in the present embodiment, and its shape is with mentioned above different, employing be shape shown in Figure 5.Specify its formation.
At first, identical with above-mentioned closed sectional shape portion 2,3, steel plate end 51 so that its front end 52 with as the relative form bending of the wall portion 4 of steel plate main body, form closed sectional.Though and the shape of this closed sectional is quadrangle roughly, the front end 52 of steel plate main body near the right position, roughly the part of tetragonal closed sectional further forms the shape to the 4 sides expansion of wall portion.Here for convenience of explanation, each limit that will form closed sectional shape portion 5 from the front end 52 residing limits of its end 51 is called first 53a of limit portion, second 53b of limit portion, the 3rd 53c of limit portion, the 4th 53d of limit portion, the 5th 53e of limit portion, is called the 53f of hexagon portion and will be somebody's turn to do from the limit that the 5th 53e of limit portion is extended to wall portion 4.
And, the 53f of hexagon portion at steel plate not from wall portion 4 warpages but press rectilinear form continuity till the 5th 53e of limit portion during this situation, just become the shape shown in the label 53f ' dotted line, but this part is towards the internal direction of closed sectional shape portion 5 in the present embodiment, promptly warpage on the residing direction of second 53b of limit portion becomes the state that is formed with recess 57 from visual observation.Thereby, identical with closed sectional shape portion 2 in the foregoing description 1, the front end 52 of the end 51 of steel plate main body near the formation side part of the closed sectional shape portion 5 wherein right position, towards the inside warpage (first joggling part) of closed sectional shape portion 5 and be positioned at and the first limit portion 53a position side by side, its front portion is warpage (second joggling part) on the direction that is separated with this first limit 53a of portion then.And, be in the middle of the recess 57 and first 53a of limit portion weld the position of position (position between first joggling part and second joggling part) and end 51 side by side.In addition, this moment is identical with the foregoing description 1 situation, convex side part butt with second joggling part of the closed sectional inside part of front end 52 residing first 53a of limit portion of end 51 and above-mentioned recess 57 comes to stablize near the location as the front end 52 of weld thus.
In addition, it is identical with the foregoing description 1 situation to be in the concrete formation at position of this position side by side.For example, between front end 52 and steel plate main body (wall portion 4), set the gap, also can between near the front end 52 of the end the weld 51 and recess 57, set the gap.And, can also make the convex side with second joggling part of the recess 57 of first 53a of the limit portion butt partly form aspect.
Fig. 6 is illustrated in the baffle plate 10 of the above-mentioned closed sectional shape portion 5 of such moulding that upside forms.In addition, the downside in wall portion 4 is formed with the downside closed sectional shape portion 3 of embodiment 1.
The baffle plate 10 that the figure shows, be in the state of erectting when being arranged at not shown truck wagon box, but the inside of the recessed closed sectional shape of weld F3 portion 5, be formed in addition in setting and be provided with on the face of warpage on the basic vertical direction of direction with respect to baffle plate 10, be difficult to the state found from the outside and be in, improvement that can realization outward appearance same as described above.Therefore, do not need special fine limit work, being careful to the outward appearance flaw, just can prevent effectively that apparent defect from producing, and when implementing laser braze welding, the end of inaccessible steel plate reliably, anti-sealing etc. enters closed sectional shape portion, thereby can abolish the coating operation of the aquaseal of implementing as rust preventing, reduce manufacturing cost, but expendable weight in addition.And, owing to be successive welding, thereby compare with existing spot welded situation, can realize the raising of closed sectional shape portion intensity, rigidity.
[utilizability on the industry]
Truck wagon box of the present invention is with baffle plate (stopping) because outward appearance is good, thereby do not need special fine finishining, to outward appearance Being careful of flaw can be realized reduction and the lightweight of manufacturing cost, is fit to be provided on the truck wagon box, has on the industry Utilizability.
(label declaration)
1,10 truck wagon box baffle plates
2 closed sectional shape sections (upside)
3 closed sectional shape sections (downside)
4 wall sections
5 closed sectional shape sections
21 ends
22 front ends
23 first side sections
24 Second Edge sections
25 the 3rd limit portions
26 the 4th limit portions
27 recesses
28 step shape portions
27a, 28a first joggling part
27b, 28b second joggling part
27c, 28c step shape pars intermedia
31 connecting elements
51 ends
52 front ends
The 53a first limit portion
The 53b second limit portion
53c the 3rd limit portion
53d the 4th limit portion
53e the 5th limit portion
53f, 53f ' hexagon portion
57 recesses
101 wagon boxes
F1, F2, F3 weld seam
The E viewpoint
Claims (11)
1. truck wagon box baffle plate, have make the sheet material end return warpage the closed sectional shape portion of moulding is characterized in that so that its front end is relative with this sheet material main body,
Make near the described closed sectional shape portion that is positioned at the position relative form the sheet material base portion of side towards the inner warpage of described closed sectional shape portion with the front end of described sheet material end, simultaneously described sheet material end and this process warpage are partly welded towards described closed sectional shape portion in-to-in, make the moulding of described closed sectional shape portion.
2. truck wagon box baffle plate as claimed in claim 1, it is characterized in that, the truck wagon box is substantially vertically being erect when being provided with respect to truck wagon box inner bottom surface with baffle plate, describedly formed towards soldered position, sheet material end described in the described closed sectional shape portion in-to-in part through warpage that with respect to this setting direction to be set vertical substantially.
3. truck wagon box baffle plate, have make the sheet material end return warpage the closed sectional shape portion of moulding is characterized in that so that its front end is relative with this sheet material main body,
Form on the sheet material base portion of side near the described closed sectional shape portion that is positioned at the position relative with the front end of described sheet material end, be formed with the form that is convex with the outside towards first joggling part of the inner warpage of this closed sectional shape portion be second joggling part of the form warpage of concavity with the outside in this closed sectional shape portion in described closed sectional shape portion, be shaped to step shape
And welding described sheet material end between described first joggling part and described second joggling part makes the moulding of described closed sectional shape portion.
4. truck wagon box baffle plate as claimed in claim 3, it is characterized in that, the truck wagon box is substantially vertically erect when being provided with respect to truck wagon box inner bottom surface with baffle plate, and soldered position, sheet material end described in the position between described first joggling part and described second joggling part forms that with respect to this setting direction to be set vertical substantially.
5. as claim 3 or 4 described truck wagon box baffle plates, it is characterized in that, make the described position that is shaped to step shape, be shaped to concavity further towards the outside warpage of closed sectional shape portion.
6. as each described truck wagon box baffle plate in the claim 3～5, it is characterized in that, make the male member butt of described sheet material end and described second joggling part, make this end and the position configured separate between described first joggling part and described second joggling part simultaneously, described sheet material end is welded, make the moulding of described closed sectional shape portion.
7. truck wagon box baffle plate as claimed in claim 6 is characterized in that, the male member formation planar portions at described second joggling part makes described sheet material end and this planar portions butt simultaneously.
8. as claim 6 or 7 described truck wagon box baffle plates, it is characterized in that, between front end on the end of described sheet material and the described second joggling part butt position and this end, weld.
9. as each described truck wagon box baffle plate in the claim 3～8, it is characterized in that the form that has a gap with the sheet material main body relative with respect to this front end is set the front end of described sheet material end.
10. as each described truck wagon box baffle plate in the claim 3～9, it is characterized in that the described laser welding that is welded as.
11. the truck wagon box manufacture method of baffle plate is characterized in that, comprises following operation:
Make the sheet material end return warpage, make sheet material base portion that near the described closed sectional shape portion that is positioned at the position relative with the front end of described sheet material end forms side operation simultaneously towards described closed sectional shape portion inside warpage so that its front end is relative with this sheet material main body;
Push so that described sheet material end and described through warpage towards described closed sectional shape portion's in-to-in part butt or approaching operation; And
From the operation that towards described closed sectional shape portion in-to-in partial sum described sheet material end both weld of this end side with described step shape portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003427814 | 2003-12-24 | ||
| JP2003427814A JP2005186683A (en) | 2003-12-24 | 2003-12-24 | Gate for load platform of truck and manufacturing method for gate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644441A true CN1644441A (en) | 2005-07-27 |
| CN100363222C CN100363222C (en) | 2008-01-23 |
Family
ID=34786984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004101044959A Expired - Fee Related CN100363222C (en) | 2003-12-24 | 2004-12-21 | Side board for truck and its manufacture |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005186683A (en) |
| CN (1) | CN100363222C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317312A (en) * | 2013-07-09 | 2013-09-25 | 武汉钢铁(集团)公司 | Method for manufacturing finned square rectangular steel tube |
| CN104180152A (en) * | 2014-08-21 | 2014-12-03 | 宋宇光 | OM-shaped pipe for supporting |
| CN104180153A (en) * | 2014-08-21 | 2014-12-03 | 杜伟 | 9-shaped pipe for supporting |
| CN113120095A (en) * | 2021-05-31 | 2021-07-16 | 中国重汽集团济南动力有限公司 | Light truck breast board and processing technology thereof |
| CN114798803A (en) * | 2021-01-29 | 2022-07-29 | 苏州亿创特智能制造有限公司 | Section bar, preparation method thereof and anti-collision structure |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202019101230U1 (en) * | 2019-03-05 | 2019-03-12 | Franz Xaver Meiller Fahrzeug- Und Maschinenfabrik - Gmbh & Co Kg | Dropside for a dump truck |
| JPWO2023189646A1 (en) * | 2022-03-31 | 2023-10-05 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7207719A (en) * | 1971-06-12 | 1972-12-14 | ||
| US4076298A (en) * | 1973-11-23 | 1978-02-28 | Tatra, Narodni Podnik | Vehicle side wall and method of making same |
| JPS57140282A (en) * | 1981-02-24 | 1982-08-30 | Shin Meiwa Ind Co Ltd | Manufacture of side board for truck |
| JP2700669B2 (en) * | 1988-10-26 | 1998-01-21 | スズキ株式会社 | Gate structure of loading platform |
| AT5693U3 (en) * | 2002-07-05 | 2003-08-25 | Fuhrmann Fahrzeugegesellschaft | METAL PROFILE, ESPECIALLY SIDEBOARD PROFILE, AND METHOD FOR PRODUCING THE SAME |
-
2003
- 2003-12-24 JP JP2003427814A patent/JP2005186683A/en not_active Withdrawn
-
2004
- 2004-12-21 CN CNB2004101044959A patent/CN100363222C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317312A (en) * | 2013-07-09 | 2013-09-25 | 武汉钢铁(集团)公司 | Method for manufacturing finned square rectangular steel tube |
| CN104180152A (en) * | 2014-08-21 | 2014-12-03 | 宋宇光 | OM-shaped pipe for supporting |
| CN104180153A (en) * | 2014-08-21 | 2014-12-03 | 杜伟 | 9-shaped pipe for supporting |
| CN114798803A (en) * | 2021-01-29 | 2022-07-29 | 苏州亿创特智能制造有限公司 | Section bar, preparation method thereof and anti-collision structure |
| CN113120095A (en) * | 2021-05-31 | 2021-07-16 | 中国重汽集团济南动力有限公司 | Light truck breast board and processing technology thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005186683A (en) | 2005-07-14 |
| CN100363222C (en) | 2008-01-23 |
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