Body structure
Technical field
The present invention relates to a kind of central sill that under the floor, has sleeper beam and intersect with this sleeper beam, and at the body structure of this lower berth, floor establishing line or pipe arrangement.
Background technology
In recent years, in order to be used for rolling stock, develop all good aluminium of a kind of extruding property, corrosion stability, weldability.Follow in this, in rolling stock, consider, now effectively utilize the vehicle body of the heavy section of aluminum alloy manufacturing to become main flow from the aspect of lightweight and making rationalization.Especially proposing a kind of underframe (platform frame) needs the very big car end clamp load of burden, utilizes the favourable aluminum alloy system hollow extrudate (hereinafter referred to as the hollow extrudate) in intensity aspect to constitute the body structure on floor.As such body structure, for example can enumerate non-patent literature 1 described body structure.
Vehicle body is made of side structure, end structure body, roof structure body and underframe structure body.Wherein, at underframe structure body (hereinafter referred to as underframe.) below the both ends of bodywork length direction be provided with central sill and sleeper beam, this central sill has the connector that is used for linking adjacent vehicle, this sleeper beam utilizes chassis to support the weight of vehicle body.
And, adopt following a kind of body structure, central sill that this body structure is possessed on the two car ends with the bodywork length direction of underframe in order to bear described car end clamp load and sleeper beam combination, and have and can bear by being installed in the intensity that connector on the central sill acts on the big load of vehicle body.
As these body structure examples, for example can enumerate the structure (with reference to patent documentation 1) of welding central sill on the lower faceplate of hollow extrudate.In addition, the present patent application people is also just proposing a kind of underframe method for making (with reference to patent documentation 2) that can make the underframe that is made of a plurality of section bars effectively.And,, for example can enumerate the 308th page of described structure body structure of above-mentioned non-patent literature 1 as the following structure example that sleeper beam is bonded on the hollow extrudate.
At present, various instruments such as power supply system, control system, high pressure air system all are installed under the floor of rolling stock with crowded state, in this case, all be configured under the body platform though connect the distribution or the pipe arrangement of these instruments, especially around chassis, can not guarantee to be used for the space of these distributions and/or pipe arrangement fully.Arrange that ( う) and the through tube that allows distribution and/or pipe arrangement pass through are a kind of efficient mechanisms of simplifying structure under the floor.Now, though on sleeper beam, be provided with through tube and make distribution and/or pipe arrangement is arranged by this through tube, do not consider countermeasure fully at the reduction of sleeper beam intensity and the increase of part number etc.
Fig. 8 and Fig. 9 are examples of the existing body structure of expression.Fig. 8 is the upward view of existing body structure, and Fig. 9 is the D-D section-drawing of body structure shown in Figure 8.This body structure is the structure with two central sills 47,47 arranged side by side on vehicle-body width direction.In underframe 41, the 2nd, the floor, the 3rd, curb girder, the 4th, end carriage, the 6th, the air bellow support, 9 are arranged on the anti-yaw appliance stand 9 on the sleeper beam 45.Below the floor 2 of underframe 41, dispose at the upwardly extending distribution in bodywork length side or the pipe arrangement that connect vehicle body end and vehicle body central authorities, also in order to dispose distribution or pipe arrangement as the crow flies and to make it not account for volume, be necessary to make it to connect sleeper beam 45 by on vehicle-body width direction, extending in the bodywork height direction.Be configured to by the other through tube 50 that is provided with on sleeper beam 45 at sleeper beam 45 distributions or pipe arrangement.Especially, the sleeper beam 45 with anti-yaw appliance stand 9 need have high rigidity and high strength.Therefore, preferably on sleeper beam 45, do not establish peristome, but because can reduce the rigidity and the intensity of sleeper beam 45 by through tube 50.The radical of through tube 50 is many more, and the tendency that the rigidity of sleeper beam 45 reduces is big more, and the position of through tube 50 is the closer to anti-yaw appliance stand 9, and then the strength degradation of sleeper beam must be big more.In order to ensure the rigidity of sleeper beam 45 and intensity and be provided with various strengthening parts, but being part number and weld, the caused result of strengthening part increases, structure becomes complicated under the floor simultaneously, and highly shared volume is big under the floor, thereby causes the manufacturing cost of vehicle body to rise.
Figure 10 and Figure 11 are other examples of the existing body structure of expression.Figure 10 is the upward view of the body structure of these other examples, and Figure 11 is the G-G section-drawing of body structure shown in Figure 10.Use corresponding identical symbol with Fig. 8 and identical key element shown in Figure 9.This existing body structure is: underframe 51 intersects with respect to sleeper beam 55 and has a central sill 57 in vehicle-body width direction central authorities.On sleeper beam 55, connect in the both sides of central sill 57 to dispose and be used to the through tube 60 that allows distribution and/or pipe arrangement pass through.If be provided with through tube 60, then the same with Fig. 8 and body structure shown in Figure 9, rigidity and intensity can reduce, and when the strengthening part reply is set, can produce that the part number increases, problems such as structure complicated, the rising of vehicle body cost of manufacture under the floor.
Patent documentation 1: the real public clear 57-56929 communique of Japan
Patent documentation 2: No. 3624527 communique of Japan's special permission
Non-patent literature 1: the lightweight of aluminum alloy and vehicle (putting down into the distribution of Japanese aluminium alliance 2 years), the 308th page, the 320th page to the 368th page
Summary of the invention
The object of the present invention is to provide a kind of body structure, it is a kind of various instruments and the distribution that is connected these instruments or pipe arrangement to be configured in body structure under the body platform, can not cause the reduction of sleeper beam rigidity, also be easy to the distribution or the pipe arrangement that connect sleeper beam are laid processing, and can solve the problems that existing body structure had such as structure complicated, the rising of vehicle body cost of manufacture under the increase of part number, the floor.
In order to solve above-mentioned problem, body structure of the present invention, it has sleeper beam and central sill, this sleeper beam is arranged on the lower surface of underframe along vehicle-body width direction, this central sill intersects with described sleeper beam, and extends setting towards the vehicle body end side along the bodywork length direction, and described body structure is characterised in that, described central sill connects to vehicle body central portion side from the vehicle body end side of described sleeper beam, and described central sill has from the vehicle body end side of described sleeper beam and is communicated with space to vehicle body central portion side.In addition, in this body structure, can be with the part of the described central sill that intersects with described sleeper beam as the breakthrough part of inside by distribution or pipe arrangement.
Body structure of the present invention, because central sill is connected with respect to sleeper beam, and the part that sleeper beam and central sill are intersected is as breakthrough part, and utilize breakthrough part the inner space so that distribution or pipe arrangement pass through, so the through tube of existing distribution and/or pipe arrangement special use needn't be set, thereby avoid utilizing special-purpose through tube on sleeper beam, the space to be set and the rigidity of this sleeper beam of causing and the decline of intensity.
The invention effect
According to body structure of the present invention, because utilizing the main structure of floor panel structure is strength member (central sill), be arranged on and simplify effectively in the configuration of distribution or pipe arrangement that the mechanism of structure is a breakthrough part under the floor, connect sleeper beam and as the through tube of the special-purpose member that allows distribution or pipe arrangement pass through so can be provided with.Therefore, can keep the floor panel structure of vehicle body, especially the rigidity of sleeper beam or intensity, can easily lay processing to the distribution or the pipe arrangement that connect sleeper beam, as floor panel structure, it can avoid the complicated of structure under the increase, floor of part number, can also realize the reduction of vehicle body cost of manufacture simultaneously.
Description of drawings
Fig. 1 is the upward view of an embodiment of expression body structure of the present invention;
Fig. 2 is the A-A section-drawing of body structure shown in Figure 1;
Fig. 3 is the B-B section-drawing of body structure shown in Figure 1;
Fig. 4 is the C-C section-drawing of body structure shown in Figure 1;
Fig. 5 is the upward view of other embodiment of expression body structure of the present invention;
Fig. 6 is the E-E section-drawing of body structure shown in Figure 5;
Fig. 7 is the F-F section-drawing of body structure shown in Figure 5;
Fig. 8 is the upward view of the underframe of existing body structure;
Fig. 9 is the D-D section-drawing of underframe shown in Figure 8;
Figure 10 is the upward view of other underframe of existing body structure;
Figure 11 is the G-G section-drawing of underframe shown in Figure 10;
Nomenclature:
The 1-underframe; The 2-floor; 3,3-curb girder; The 4-end carriage; The 5-sleeper beam; 6,6-air bellow support; 7,7-central sill; 8-connector support; 9, the anti-yaw appliance stand of 9-; 10,10-breakthrough part; The path of 11-distribution or pipe arrangement; The 12-peristome; 13,13-open end; The 21-underframe; The 25-sleeper beam; The 27-central sill; The 30-breakthrough part; The path of 31-distribution or pipe arrangement; 32,32-peristome; The 33-open end; The 41-underframe; The 45-sleeper beam; The 47-central sill; The 50-through tube; The 51-underframe; The 55-sleeper beam; The 57-central sill; The 60-through tube.
The specific embodiment
Below, describe based on the embodiment of accompanying drawing body structure of the present invention.Fig. 1 is the upward view (accompanying drawing below underframe side observation vehicle body) of an embodiment of expression body structure of the present invention, Fig. 2 is the A-A section-drawing of body structure shown in Figure 1, Fig. 3 is the B-B section-drawing of body structure shown in Figure 1, and Fig. 4 is the C-C section-drawing of body structure shown in Figure 1.The body structure of the body structure of Fig. 1~shown in Figure 4 and Fig. 8~shown in Figure 9 is identical, is the embodiment with two central sills.Fig. 1 and Fig. 4 represent body structure as the local figure of a square end portion that comprises length direction.
In the body structure of Fig. 1~shown in Figure 4, underframe 1 is by constituting with the lower part: floor 2, and it is arranged a plurality of sheet materials in the plane and engages and constitute; Curb girder 3, it is arranged on the both ends of the vehicle-body width direction on floor 2; End carriage 4, it is arranged on the both ends of the bodywork length direction on floor 2; And sleeper beam 5 and central sill 7, they are arranged on the lower surface on floor 2.Though detailed icon not, but floor 2 is length directions by the sheet material that will be formed by a plurality of hollow extrudates arranges in the plane and the end of adjacent floor length direction is each other engaged along the length direction of vehicle body and constitute.Usually, floor 2 with the top of adjacent sheet material and below, i.e. two sides welding and engaging. Curb girder 3,3 is configured in the vehicle-body width direction both ends on floor 2 along the bodywork length direction.Each curb girder 3 is hollow extrudates, and as shown in Figures 2 and 3, it constitutes the length (size t1) of vertical dimension than floor 2.End carriage 4 so that the mode of its length direction bodywork length direction end of 2 along the floor be configured.End carriage 4 is made of the hollow extrudate.
Sleeper beam 5 is engaged with the position that relies on bodywork length direction central authorities of leaving predetermined distance apart from the end carriage 4 of the lower surface on floor 2.Sleeper beam 5 is set at the position by chassis supporting vehicle body, and crosses over the total length of vehicle-body width direction between two curb girders 3,3.Sleeper beam 5 has the width of regulation on the bodywork length direction, and is equipped with air bellow support 6,6 in its two end portions.The air bellow (not shown) that tare has by chassis on the position of the air bellow support 6,6 that the sleeper beam 5 of the lower surface setting on floor 2 is possessed is supported on the chassis.
Between end carriage 4 and sleeper beam 3, two central sills 7,7 are set up in the mode along the bodywork length direction under with respect to the state of body width line of centers balanced configuration.Each central sill 7 is made of the hollow extrudate of the square-section of inner hollow.Bodywork length direction end position at central sill 7,7 is provided with connector support 8, and connector support 8 is installed the connector (not shown) that is used to link adjacent vehicle.The end portions cross of the length over ends of body direction center side of central sill 7,7 is combined on the sleeper beam 5.On sleeper beam 5, near air bellow support 6,6, be that the space between air bellow support 6,6 and central sill 7,7 is provided with anti-yaw appliance stand 9,9 in this embodiment, it is used for fixing the anti-yaw device (not shown) that suppresses the vehicle body yaw.Car end load by the connector effect is passed to floor 2 through the central sill 7,7 that keeps connector and is combined in sleeper beam 5 on the central sill 7,7.
In the present embodiment, central sill 7 connects sleeper beam 5 and extends, and it is a breakthrough part 10 with the cross section that sleeper beam 5 intersects.That is, the breakthrough part 10 of the cross section by central sill 7 and sleeper beam 5 constitutes the vehicle body end side that is communicated with sleeper beam 5 and the space of vehicle body central portion side.Central sill 7 is bonded on the sleeper beam 5 by welding in the position of breakthrough part 10.Utilization comprises the hollow interior space that is of the part of breakthrough part 10 and central sill 7, is arranged in distribution or pipe arrangement that the bodywork length direction is stretched and passes through.The upper surface of sleeper beam 5 and central sill 7 is engaged in the lower surface on floor 2.And, having center pin support (not shown) in order to stride across both lower surfaces of sleeper beam 5 and central sill 7, the gauge (size of bodywork height direction) that makes the gauge (size of bodywork height direction) of sleeper beam 5 and central sill 7 is consistent and constitute the plane.The central sill 7 of making here connects the structure of sleeper beams 5, by engaging the central sill and the sleeper beam of roughly the same gauge (the short transverse size of vehicle body), comprises that sleeper beam 5 spreads all over the vehicle-body width direction total length and the state (Fig. 1 is to Fig. 7) that constitutes.In addition, the cross sectional shape of central sill 7 also can be hollow section, " コ " type cross section, " I " type cross sectional shape etc.In this case, in order to constitute the breakthrough part 10 of arranging distribution or pipe arrangement, and between the plate of the upper surface of central sill 7 and lower surface, the space is set with " コ " type or " I " type cross sectional shape at the cross part of central sill and sleeper beam.And,, also can form distribution or pipe arrangement by central sill in-to-in breakthrough part even under the situation of gauge (size of bodywork height direction) less than the gauge of sleeper beam of central sill, form said structure by cross part with central sill and sleeper beam.
In said structure, owing on sleeper beam 5, there is no need to possess the through tube of distribution and/or pipe arrangement special use, so sleeper beam 5 can be kept high rigidity and high strength, the effect of also can being provided with on the high-intensity sleeper beam 5 of so high rigidity has the anti-yaw appliance stand 9,9 of the big power that is used for resisting the vehicle body yaw.In Fig. 1 and Fig. 4, the path of distribution or pipe arrangement is shown in arrow 11,11.
As shown in Figure 4, on each central sill 7, near the position bodywork length direction end side of sleeper beam 5, be formed with peristome 12 in the side.Peristome 12 is by breakthrough part 10.Distribution or the pipe arrangement arranged along central sill 7 are introduced into central sill 7 and then breakthrough part 10 by peristome 12, then by breakthrough part 10, extend to the vehicle body center side of underframe 1 from the open end 13 of the vehicle body center side of breakthrough part 10 and to be provided with.That is, these distributions and/or pipe arrangement are arranged to the inside by breakthrough part 10 and extend to the vehicle body central portion side of sleeper beam 5.
Fig. 5~Fig. 7 is the accompanying drawing of other embodiments of expression body structure of the present invention, Fig. 5 is the upward view of an embodiment of expression body structure of the present invention, Fig. 6 is the E-E section-drawing of body structure shown in Figure 5, and Fig. 7 is the F-F section-drawing of body structure shown in Figure 5.Fig. 5 and Fig. 7 represent body structure as the local figure of a square end portion that comprises length direction.
The body structure of the body structure of Fig. 5~shown in Figure 7 and Figure 10~shown in Figure 11 is identical, is the embodiment that has a central sill in the central authorities of vehicle-body width direction.Fig. 5~body structure shown in Figure 7, owing to do not have the place of change about other body structures beyond the structure of central sill and relative sleeper beam and Fig. 1~body structure shown in Figure 4, so, omit detailed description once more with Fig. 1~identical inscape symbol identical of body structure shown in Figure 4 with part mark.
Fig. 5~21, central sills 27 of underframe shown in Figure 7 intersect at the vehicle-body width direction middle position with sleeper beam 25.Central sill 27 connects sleeper beams 25 and extends, and is breakthrough part 30 in the part of intersecting with sleeper beam 25.Central sill 27 is incorporated into sleeper beam 25 by welding on the position of breakthrough part 30.Utilization comprises that the part of breakthrough part 30 and the hollow interior space that is of central sill 27 dispose distribution or pipe arrangement.That is, distribution or pipe arrangement by breakthrough part 30 inside and and then be arranged to extend to the vehicle body central portion side of sleeper beam 25.The upper surface of sleeper beam 25 and central sill 27 is bonded on the lower surface on floor (floor 2).In Fig. 5 and Fig. 7, the path of distribution or pipe arrangement is as shown in arrow 31.
As shown in Figure 7, on central sill 27, near the position bodywork length direction end side of sleeper beam 25 is formed with peristome 32,32 in its both sides.Peristome 32,32 is by breakthrough part 30.Distribution or the pipe arrangement arranged in the outside of central sill 27 are introduced into breakthrough part 30 by peristome 32,32, then by breakthrough part 30, extend to the bodywork length direction center side of underframe 21 from the open end 33 of the vehicle body center side of breakthrough part 30 and to be provided with.
As Fig. 2 and shown in Figure 6, when railway platform height H 1 is lower than Fig. 9 and railway platform height H shown in Figure 11 2, at vehicle side floor level also step-down.In the low vehicle of floor level, existence can't increase the tendency of sleeper beam thickness (the size t1 of bodywork height direction).When only when being provided with on the sleeper beam along through tube that the bodywork length direction is extended, can't be by the distribution or the pipe arrangement of sufficient amount, but, can allow distribution or pipe arrangement arrange by central sill with enough cross-sectional sizes according to the present invention.