CN114407946B - End wall structure and manufacturing method thereof - Google Patents
End wall structure and manufacturing method thereof Download PDFInfo
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- CN114407946B CN114407946B CN202111562846.0A CN202111562846A CN114407946B CN 114407946 B CN114407946 B CN 114407946B CN 202111562846 A CN202111562846 A CN 202111562846A CN 114407946 B CN114407946 B CN 114407946B
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- end wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/06—End walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides an end wall structure and a manufacturing method thereof, wherein the end wall structure comprises: end wall panel and end wall frame; the end wall panel comprises a plurality of profiles; the end wall outer frame is arranged at the edge position of the end wall panel; the inner ring of the end wall outer frame is provided with a groove-shaped nesting interface, and the edge of the end wall panel is inserted into the nesting interface; the outer ring of the end wall outer frame is provided with a lap joint interface, and the lap joint interface is used for connecting other vehicle body structures. According to the end wall structure and the manufacturing method thereof provided by the embodiment of the invention, the end wall panel can be inserted into the nesting interface in a plugging manner to realize connection, and the nesting interface can cover the end wall panel on the inner side and the outer side of a carriage, so that the air tightness and the sound insulation of the connection part between the end wall panel and the end wall outer frame can be improved; and the local strength of the outer frame area can be improved through the nested structure, the thickness of the section bar of the end wall panel can not be increased, and the effect of light weight can be achieved.
Description
Technical Field
The invention relates to the technical field of rail transit vehicles, in particular to an end wall structure and a manufacturing method thereof.
Background
The body of the railway vehicle generally comprises a bottom frame, side walls, end walls and a roof, wherein the end walls are positioned at the end parts of the body and are large structural components connected with the roof, the side walls and the bottom frame simultaneously; the headwall has a door-shaped space in the middle, which may be referred to as a door zone, for passengers to pass through.
In order to conveniently install the end wall, the side wall, the roof and the like in a modularized mode, frame-shaped connecting pieces can be arranged between the end wall and the side wall, the roof and the like, but the connecting pieces mainly play a role in fixed connection. Along with the continuous improvement of the design speed grade of rail transit vehicles (such as urban trains, intercity trains, motor trains, high-speed rails, maglev trains and the like), higher requirements are put forward on the air tightness, sound insulation and the like of the conventional train end walls, and the air tightness and sound insulation of the end walls are poor due to the fact that connecting pieces are arranged. In addition, in order to meet the light weight requirement of the vehicle body, the end wall is generally not of a solid structure, the overall strength of the end wall is poor, and the bearing capacity is low.
Disclosure of Invention
In order to solve the above problems, an object of an embodiment of the present invention is to provide an end wall structure and a manufacturing method thereof.
In a first aspect, an embodiment of the present invention provides an end wall structure, including: end wall panel and end wall frame;
the end wall panel comprises a plurality of profiles; the end wall outer frame is arranged at the edge position of the end wall panel;
the inner ring of the end wall outer frame is provided with a groove-shaped nesting interface, and the edge of the end wall panel is inserted into the nesting interface;
the outer ring of the end wall outer frame is provided with a lap joint interface, and the lap joint interface is used for connecting other vehicle body structures.
In one possible implementation, the end wall panel includes: a cross beam section bar, a left upright column section bar and a right upright column section bar;
the left upright post section bar and the right upright post section bar are arranged below the cross beam section bar;
the left upright column section bar and the right upright column section bar are arranged at intervals, and a door zone is formed between the left upright column section bar and the right upright column section bar.
In one possible embodiment, the lower central region of the transverse beam profile is provided with a recess region which corresponds to the width of the door region;
one side of the left upright section bar, which is close to the door zone, is aligned with the left edge of the recessed area, and one side of the right upright section bar, which is close to the door zone, is aligned with the right edge of the recessed area.
In one possible implementation, transverse ribs are provided in the cross beam profile;
wherein, part of the structure of one transverse rib is the upper edge of the concave area.
In one possible implementation, the beam profile comprises: an upper beam section bar and a lower beam section bar which are arranged up and down;
the left upright section bar and the right upright section bar all comprise: an inner column section bar and an outer column section bar which are arranged left and right;
the upper edges of the inner upright post section bar and the outer upright post section bar are connected with the lower edge of the lower cross beam section bar; the inner pillar profile is closer to the door zone than the outer pillar profile.
In one possible implementation, the profile comprises a first panel, a second panel, and ribs disposed between the first panel and the second panel;
the first panel is provided with a strip-shaped thickening area at the position for installing the through channel, the thickening area is arranged on the inner side of the first panel, which is close to the second panel, and the section of the thickening area is a boss structure protruding to the second panel;
the thickening area is provided with a plurality of first mounting holes, and the first mounting holes are used for mounting the through channels.
In one possible implementation, at least one side of the boss structure is a slope that transitions to an inner side of the first panel, and corners of the slope are rounded.
In one possible implementation, the headwall structure further includes a mounting backplate;
the first panel is provided with a plurality of first mounting holes corresponding to the bolts one by one;
and a backboard groove is formed in the position, corresponding to the second mounting holes, of the second panel, the mounting backboard is arranged in the backboard groove, and third mounting holes corresponding to the second mounting holes one to one are formed in the mounting backboard.
In one possible implementation, the lap joint interface includes: the connecting plate is connected with the limiting plate;
the connecting plate is used for connecting the lapping plate and the limiting plate to form the h-shaped lapping interface;
the connecting plates are obliquely arranged, and one end, connected with the limiting plate, of the connecting plates is closer to the other vehicle body structures than one end, connected with the lap plate;
the lapping plate is used for lapping the inner sides of the outer plates of the other vehicle body structures, and the limiting plate is used for limiting the inner plates of the other vehicle body structures.
In one possible implementation, the headwall structure further includes: adjusting the cushion block;
the adjusting cushion block is arranged between the limiting plate and the inner plate of the other vehicle body structure and is abutted against the limiting plate and the inner plate of the other vehicle body structure.
In one possible implementation manner, the end wall outer frame is a structure obtained by bending a strip-shaped section bar to be consistent with the edge shape of the end wall panel;
and a groove is arranged at the nesting interface of the end wall outer frame at the position where the bending radius is smaller than the preset value.
In one possible implementation, the headwall frame includes: an upper outer frame, a left outer frame and a right outer frame;
the left outer frame and the right outer frame are respectively connected with two ends of the upper outer frame to form the U-shaped end wall outer frame.
In a second aspect, embodiments of the present invention further provide a method for manufacturing an end wall structure as described above, including:
splicing a plurality of sectional materials into an original panel;
cutting the original panel according to the required outline shape of the end wall to obtain an end wall panel;
bending the strip-shaped section bar to be consistent with the edge shape of the end wall panel to obtain an end wall outer frame;
and inserting the end wall panel and the nested interface of the end wall outer frame to generate the end wall structure.
In the solution provided in the first aspect of the embodiment of the present invention, a plurality of sections are used to form the end wall panel, so that the end wall panel with a desired shape is convenient to manufacture; the inner ring of the end wall outer frame is provided with a grooved nested interface, so that the end wall panel can be inserted into the nested interface in a plugging manner to realize connection, the nested interface can cover the end wall panel at the inner side and the outer side of a carriage, and the air tightness and the sound insulation performance of a connecting part between the end wall panel and the end wall outer frame can be improved, so that the end wall structure has better air tightness and sound insulation performance. Moreover, the grooved nested interfaces enable the end wall panel to be uniformly connected with the end wall outer frame, the end wall is optimized, the end face strength is improved, the end wall structure can ensure that longitudinal force is uniformly transmitted to various large components such as side walls, underframe and roof, and the whole bearing of a vehicle body can be improved. In addition, because the outer edge of the end wall structure is connected with the roof and the side wall, the opposite end wall panel needs higher structural strength, the local strength of the area can be improved through the nested structure, the thickness of the section bar of the end wall panel can not be increased, and the effect of light weight can be achieved.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic structural view of an inboard side of an headwall structure provided by an embodiment of the present invention;
fig. 2 shows a schematic structural view of the vehicle exterior side of the headwall structure according to the embodiment of the present invention;
FIG. 3 is a schematic view showing a part of the structure of an end wall frame according to an embodiment of the present invention;
FIG. 4 is a schematic view of an original panel according to an embodiment of the present invention;
fig. 5 shows a schematic structural view of a lower beam profile according to an embodiment of the present invention;
fig. 6 is a schematic structural view of an upper frame according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of an end wall housing according to an embodiment of the present invention;
fig. 8 shows a schematic view of an application scenario of an end wall structure according to an embodiment of the present invention;
FIG. 9 is a schematic view of a portion of an end wall panel according to an embodiment of the present invention;
fig. 10 shows a cross-sectional view in the direction A-A of fig. 1.
Icon:
1-end wall panel, 101-first panel, 102-second panel, 103-ribs, 104-thickened area, 105-back panel slot, 1011-first mounting hole, 1012-second mounting hole, 11-beam profile, 12-left column profile, 13-right column profile, 14-door zone, 141-recessed area, 111-upper beam profile, 112-lower beam profile, 121-inner column profile, 122-outer column profile, 2-end wall outer frame, 21-upper outer frame, 22-left outer frame, 23-right outer frame, 201-nesting interface, 202-lap joint, 2021-lap joint, 2022-connecting plate, 2023-limiting plate, 203-grooving, 3-mounting back panel, 4-adjusting cushion, 5-patch, 6-bolt, 7-bolt, 8-mount pad.
Detailed Description
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The embodiment of the invention provides an end wall structure which can be connected with other vehicle body structures such as an underframe, a side wall or a roof. Referring to fig. 1 to 3, the headwall structure includes: end wall panel 1 and end wall frame 2. Wherein the end wall panel 1 comprises a plurality of profiles; the headwall frame 2 is arranged at the edge position of the headwall panel 1. The inner ring of the end wall outer frame 2 is provided with a groove-shaped nested interface 201, and the edge of the end wall panel 1 is inserted into the nested interface 201; the outer ring of the end wall outer frame 2 is provided with a lap joint interface 202, and the lap joint interface 202 is used for connecting other vehicle body structures.
In the embodiment of the present invention, the end wall panel 1 has a plate-like structure, and the middle area of the lower portion thereof is a door-shaped area for passing a person, which is referred to as a door zone 14 in this embodiment. For ease of manufacturing the end wall panel 1, the end wall panel 1 comprises a plurality of profiles, i.e. the end wall panel 1 is produced from a plurality of profiles. For example, the end wall panel 1 includes an upper profile, a left profile, and a right profile; as shown in fig. 1 and 2, the end wall panel 1 includes: a cross beam profile 11, a left column profile 12 and a right column profile 13. Fig. 1 is a schematic structural view of the inside of the headwall structure, and fig. 2 is a schematic structural view of the outside of the headwall structure.
The end wall panel 1 has a certain shape, and the edge shape of the end wall panel 1 is consistent with the required end wall contour shape, and the edge shape of the end wall panel 1 can be specifically determined based on the vehicle type. The end wall outer frame 2 is provided with a nested interface 201 and a lap joint interface 202, wherein the nested interface 201 is used for connecting the end wall panel 1, and the lap joint interface 202 is used for connecting other vehicle body structures, such as side walls, roofs and the like, so that the end wall is connected with the side walls, the roofs and the like. The nesting interface 201 has a groove-shaped structure, so that the end wall panel 1 can be inserted into the nesting interface 201, and the end wall panel 1 and the end wall outer frame 2 are connected. For example, referring to fig. 3, the nesting interface 201 is provided with baffles on both sides to form a channel-like structure between which the edge of the end wall panel 1 may be inserted. Wherein, the end wall panel 1 and the nested interface 201 can be connected by plugging and welding.
According to the end wall structure provided by the embodiment of the invention, the end wall panel 1 is formed by utilizing a plurality of sectional materials, so that the end wall panel 1 with a required shape can be conveniently manufactured; the inner ring of the end wall outer frame 2 is provided with a groove-shaped nested interface 201, so that the end wall panel 1 can be inserted into the nested interface 201 in a plugging manner to realize connection, the nested interface 201 can cover the end wall panel 1 at the inner side and the outer side of a carriage, and therefore the air tightness and the sound insulation performance of a connecting part between the end wall panel 1 and the end wall outer frame 2 can be improved, and the end wall structure has good air tightness and sound insulation performance. Moreover, the grooved nested interfaces 201 enable the end wall panel 1 and the end wall outer frame 2 to be uniformly connected, so that the end wall is optimized, the end face strength is improved, and the end wall structure can ensure that longitudinal force is uniformly transmitted to various large components such as side walls, an underframe, a roof and the like, and the overall bearing of a vehicle body can be improved. In addition, because the outer edge of the end wall structure is connected with the roof and the side wall, the opposite end wall panel 1 needs higher structural strength, the local strength of the area can be improved through the nested structure, the thickness of the section bar of the end wall panel 1 can not be increased, and the effect of light weight can be achieved.
Optionally, the end wall structure is manufactured to obtain the whole end wall panel 1, and then the end wall panel 1 and the end wall outer frame 2 are inserted. Specifically, the embodiment of the invention also provides a method for manufacturing the end wall structure, which comprises the following steps of A1-A4:
step A1: and splicing the plurality of profiles into an original panel.
Step A2: the original panel is cut according to the desired headwall profile shape to obtain headwall panel 1.
In the embodiment of the present invention, the profile itself is generally square, for example, the profiles used for manufacturing the beam profile 11, the left column profile 12, and the right column profile 13 are all square at first, and the profile needs to be cut into profiles with the required profile shape, that is, the beam profile 11, the left column profile 12, and the right column profile 13. If the required cross beam section bar 11, the left upright column section bar 12 and the right upright column section bar 13 are cut firstly, then a plurality of section bars are spliced, and errors are easily caused by deformation of the section bars due to welding in the splicing process, so that the profile precision of the whole end wall panel is lower. In this embodiment, a plurality of original sections are spliced (welded) to form an original panel, and then the whole original panel is cut, so that errors caused by deformation after the sections are separately processed and welded can be avoided, the contour accuracy of the end wall panel 1 is greatly improved, the edge characteristics of the inner wall of the end wall panel 1 are continuously consistent, and good closed sealing characteristics can be formed when the end wall panel is combined with the end wall outer frame 2. And after the original panel is assembled and welded, redundant sections are machined and cut off according to the required outline shape, and the whole end wall panel 1 is integrally machined and formed along the outline line of the vehicle body, so that the machining times can be reduced, and the process flow is simplified. Fig. 4 shows a schematic view of an original panel, after cutting the original panel, the resulting end wall panel 1 can be seen in fig. 1.
Step A3: and bending the strip-shaped section bar to be consistent with the edge shape of the end wall panel 1 to obtain the end wall outer frame 2.
Step A4: the end wall structure is generated by inserting the nested interfaces 201 of the end wall panel 1 and the end wall outer frame 2.
In the embodiment of the invention, the end wall outer frame 2 is formed by bending a strip-shaped section bar. The strip-shaped section bar is straight, and needs to be bent according to the edge shape (end wall outline shape) of the end wall panel 1, so as to obtain an end wall outer frame 2 consistent with the edge shape of the end wall panel 1, and then the end wall panel 1 can be inserted into the end wall outer frame 2 to form a required end wall structure. In this embodiment, the strip-shaped section bar with the same section can be adopted, and is bent into the end wall outer frame 2, so that the structure of the end wall outer frame 2 has consistency, and the end wall outer frame has good mechanical properties.
On the basis of the above-described embodiment, as described above, the end wall panel 1 includes: a cross beam profile 11, a left column profile 12 and a right column profile 13. As shown in fig. 1, 2 and 4, the left column section bar 12 and the right column section bar 13 are arranged below the cross beam section bar 11; the left column section bar 12 and the right column section bar 13 are arranged at intervals, and a door zone 14 is formed between the left column section bar 12 and the right column section bar 13. The end wall panel 1 with the door zone 14 can be formed by means of three profiles (cross beam profile 11, left column profile 12, right column profile 13).
Alternatively, as shown in fig. 1, 2, 4, the beam profile 11 comprises: an upper beam profile 111 and a lower beam profile 112 arranged up and down. The left and right column profiles 12 and 13 each include: an inner column profile 121 and an outer column profile 122 arranged left and right. As shown, the upper edges of the inner and outer column profiles 121 and 122 are connected to the lower edge of the lower beam profile 112; the inner pillar profile 121 is closer to the door zone 14 than the outer pillar profile 122.
In the embodiment of the present invention, the end wall panel 1 may include four kinds of profiles: upper beam profile 111, lower beam profile 112, inner column profile 121, outer column profile 122. The end wall panel 1 required in various scenes can be produced by using the four profiles. The upper beam profile 111 and the lower beam profile 112 are two profiles that can be inserted into each other, and the inner column profile 121 and the outer column profile 122 are two profiles that can be inserted into each other. For example, the lower edge of the upper cross beam profile 111 or the upper edge of the lower cross beam profile 112 is provided with a plug interface, so that the upper cross beam profile 111 and the lower cross beam profile 112 can be welded via the plug interface; the outer edge of the inner column profile 121 or the inner edge of the outer column profile 122 can also be provided with a plug-in connection, so that the inner column profile 121 and the outer column profile 122 can be welded via the plug-in connection. In addition, the outer walls of the inner and outer column profiles 121, 122 are beveled (or the lower edge of the lower beam profile 112 is beveled) so that the lower beam profile 112 can be welded with the upper edges of the inner and outer column profiles 121, 122. The end wall panel 1 is mainly formed by welding various sectional materials, reinforcing welding pieces are not required to be added, the number of welding lines and the welding amount are small, and the local strength of the end wall panel 1 can be greatly improved. In addition, the local unevenness of the end wall panel 1 (especially the lamination area with the through passage) caused by welding deformation is avoided, the requirement on end wall surface coating is reduced, and the method has good flatness and manufacturability.
It will be appreciated by those skilled in the art that the upper beam profile 111 and the lower beam profile 112 may be structurally identical profiles, and the inner column profile 121 and the outer column profile 122 may be structurally identical profiles, if desired.
In order to ensure that the end wall structure has the characteristic of light weight, the section bar used by the end wall panel 1 is a partially hollow section bar, namely the section bar comprises two panels, and the two panels are fixedly connected through ribs so as to improve the overall strength of the section bar. For example, the profile comprises a first panel 101, a second panel 102 and ribs 103 arranged between the first panel 101 and the second panel 102. The beam profile 11, the left column profile 12, the right column profile 13, or the upper beam profile 111, the lower beam profile 112, the inner column profile 121, the outer column profile 122 described above, each comprising a first panel 101, a second panel 102 and ribs 103 arranged between the first panel 101 and the second panel 102.
The ribs 103 in the beam profile 11 (or the upper beam profile 111, the lower beam profile 112) may be transverse ribs, and the ribs 103 in the left column profile 12, the right column profile 13 (or the inner column profile 121, the outer column profile 122) may be vertical ribs.
In order to be able to form the door zone 14, the left and right column profiles 12, 13 can be arranged directly on the two sides below the transverse beam profile 11 in a split manner, so that the door zone 14 is formed between the left and right column profiles 12, 13. However, this can lead to welds in the door corner region of the door zone 14, for example between the transverse beam profile 11 and the left and right column profiles 12, 13 at the door corner. In the present embodiment, the lower central region of the beam profile 11 is provided with a recessed region 141 corresponding to the width of the door region 14. For example, as shown in fig. 5, the recessed area 141 may be provided in a lower center area of the lower beam profile 112. And, as shown in fig. 4, the side of the left pillar profile 12 near the door zone 14 is aligned with the left edge of the recessed area 141, and the side of the right pillar profile 13 near the door zone 14 is aligned with the right edge of the recessed area 141.
In the embodiment of the invention, the concave area 141 is arranged in the lower central area of the beam profile 11 (the lower beam profile 112), and the concave area 141 is used as the upper structure of the door zone 14, so that the upper structure of the door zone 14 has no welding seam in the door corner area, the reduction of the strength caused by welding of the high-stress part can be avoided, and the overall strength is improved.
Further optionally, transverse ribs 103 are provided in the transverse beam profile 11; as shown in fig. 5, the lower beam profile 112 has transverse ribs 103 arranged therein, the positions of the inner ribs 103 being indicated in fig. 5 by dashed lines. And, a part of one of the lateral ribs 103 is configured as an upper edge of the recessed area 141. In the embodiment of the present invention, when the recessed area 141 is cut, the upper edge of the recessed area 141 is cut along one of the transverse ribs 103, so that the transverse rib 103 can be used as the upper edge of the recessed area 141. Further, sealing plates may be added to the left and right edges of the recessed area 141, so that the transverse rib 103 and the left and right sealing plates may form the recessed area 141, thereby forming the door zone 14. In this embodiment, when the recess region 141 is machined, the upper structure of the door zone 14 (i.e. the recess region 141) can be produced with less welding, by retaining the inner wall of the cross beam profile 11, i.e. by retaining the ribs 103 inside the cross beam profile 11. In addition, for different types of vehicle bodies, the recessed areas 141 with the same width can be obtained by cutting according to the required width of the door zone, and the height of the recessed areas 141 is unchanged, so that the transverse ribs 103 in the cross beam profile 11 are aligned with the recessed areas 141; the adjustment of the height of the door zone 14 can be achieved by using left and right upright profiles 12, 13 of different heights.
Optionally, in order to enable the end wall housing 2 to adapt to end wall panels 2 having different contour shapes, the end wall housing 2 provided in this embodiment also includes a plurality of structures to facilitate assembly of the two. As shown in fig. 1 and 2, the headwall frame 2 includes: an upper outer frame 21, a left outer frame 22, and a right outer frame 23; the left outer frame 22 and the right outer frame 23 are respectively connected with two ends of the upper outer frame 21 to form a U-shaped end wall outer frame 2. Fig. 6 shows a schematic structural view of the upper frame 21.
In the embodiment of the invention, the upper outer frame 21, the left outer frame 22 and the right outer frame 23 are profiles with the same section, and all the three profiles can be obtained in a bending mode, so that the profiles are respectively matched with the edge shape of the end wall panel 1. The left outer frame 22, the upper outer frame 21 and the right outer frame 23 with the same section are welded in sequence, so that the continuous and consistent structure of the joint of the upper outer frame 21, the left outer frame 22 and the right outer frame 23 can be ensured, and the integral strength of the end wall outer frame 2 can be ensured, thereby achieving good mechanical properties of the end wall outer frame 2. The end wall frame 2 is formed along with the car body contour line in a bending mode, the outer edge of the end wall frame 2 is the car body contour line, the end wall structure can adapt to different car body contour shape requirements, no or only a small number of welding parts exist in the periphery of the end wall frame 2, stress concentration and welding deformation can be reduced, and low contour deviation is guaranteed.
Alternatively, the headwall frame 2 is a structure obtained by bending a strip-shaped profile to conform to the shape of the edge of the headwall panel 1. In the process of bending the end wall outer frame 2, if the bending radius is too small, deformation of the bending part is easy to occur. In the embodiment of the present invention, referring to fig. 3, a slot 203 is provided in the nesting interface 201 of the end wall outer frame 2 at a position where the bending radius is smaller than a preset value. When the end wall outer frame 2 is bent, the inner side of the small-radius bending angle is grooved, so that the bending manufacturability and the yield can be improved. Further optionally, after the end wall panel 1 is spliced and welded to the end wall casing 2, the casing patch 5 may be welded at the slot 203, and fig. 1 and 2 show a schematic view of adding the patch 5.
Optionally, the lap joint 202 of the headwall housing 2 is h-shaped. Fig. 7 shows a schematic cross-sectional view of the headwall frame 2, as shown in fig. 7, the overlap joint 202 comprising: a strap 2021, a connecting plate 2022, and a stop plate 2023. Wherein the connecting plate 2022 is used for connecting the lapping plate 2021 and the limiting plate 2023 to form an h-shaped lapping interface 202; the connection plate 2022 is provided obliquely, and one end of the connection plate 2022 to which the stopper plate 2023 is connected is closer to other vehicle body structures than one end to which the lap plate 2021 is connected. The lap plate 2021 is used to lap the inner side of the outer panel of the other vehicle body structure, and the stopper plate 2023 is used to stopper the inner panel of the other vehicle body structure.
In the embodiment of the present invention, the lap joint 202 may be integrally formed with the connection plate 2021, the connection plate 2022 and the limiting plate 2023, and the lap joint 202 is divided into the lap joint 2021, the connection plate 2022 and the limiting plate 2023 according to this embodiment for convenience of description only, and is not limited to being necessarily separated. The left half in fig. 7 shows a cross-sectional view of other vehicle body structures, such as a side wall, a roof, and the like, the inner side of the outer panel of the other vehicle body structure is overlapped on the overlap plate 2021, and the stopper plate 2023 can restrict the position of the inner panel of the other vehicle body structure to avoid rattling of the other vehicle body structure. Further, the connection plate 2022 between the strap 2021 and the stopper plate 2023 is provided obliquely, so that the longitudinal force between the strap 2021 and the stopper plate 2023 can be transmitted better (in general, the longitudinal direction of the vehicle may be taken as the longitudinal direction, for example, the head-to-tail direction).
In addition, in the longitudinal direction, certain gaps can exist between the lapping plate 2021 and the limiting plate 2023 and other vehicle body structures, parallelogram lapping can be formed between the inclined connecting plate 2022 and the roof and side walls of the vehicle body, the outer contour of the end wall can swing within a certain range when being combined with the cylindrical structure of the vehicle body, the combined area still meets the combined welding condition, moreover, the end wall structure can be always welded with other vehicle body structures in a vertical state, and the perpendicularity of the end wall panel 2 can be ensured.
Further optionally, referring to fig. 7, the headwall structure further includes: adjusting the cushion block 4; the adjustment pad 4 is disposed between the stopper plate 2023 and the inner panel of the other vehicle body structure, and abuts against the stopper plate 2023 and the inner panel of the other vehicle body structure.
In the embodiment of the invention, the h-shaped overlap joint 202 is matched with the adjusting cushion block 4, so that the method can adapt to roofs and side walls with different thicknesses, and meanwhile, welding seams are prevented from being formed in a combination area, and good welding conditions are achieved. The adjusting cushion block 4 can enable the lap joint area of the peripheral ring to be uniform and consistent, and achieves the purpose of designing the high-air-tightness platform end wall suitable for various cylinder-type car bodies. In general, the roof profile is thinner and the side wall profile is thicker, and fig. 8 shows a schematic structural diagram of adding the adjusting cushion 4 to the roof, so that the lap joint 201 can be suitable for side walls and roofs with different thicknesses. When the relative distances between the side wall, the roof and the front end and the rear end of the underframe are deviated, the butt joint assembly welding can be realized with the end wall structure, and the perpendicularity of the end wall and the whole vehicle length can be ensured to be unchanged.
On the basis of the above embodiment, the end wall structure also needs to fix other structures, such as through channels and the like; however, the lightweight headwall structure mainly includes two panels (e.g., the first panel 101 and the second panel 102), and the panels are thin, so that it is difficult to firmly install through passages. The embodiment locally thickens the end wall structure so as to improve the reliability of installation. As described above, the profile comprises a first panel 101, a second panel 102 and ribs 103 arranged between the first panel 101 and the second panel 102. As shown in fig. 9, the first panel 101 has a strip-shaped thickened area 104 at a position for installing the through channel, the thickened area 104 is disposed at the inner side of the first panel 101 near the second panel 102, and the section of the thickened area 104 is a boss structure protruding toward the second panel 102; the thickened region 104 is provided with a plurality of first mounting holes 1011, the first mounting holes 1011 being for mounting through passages.
In the embodiment of the present invention, the outer side of the end wall is used for installing the through channel, the through channel is installed on the outer side of the end wall structure, and at this time, an installation hole needs to be provided on the outer side of the end wall structure, the installation hole is referred to as a first installation hole 1011 in the embodiment, a schematic distribution diagram of the first installation hole 1011 can be shown in fig. 2, fig. 2 is a schematic structure diagram of the outer side of the end wall structure, and a plurality of first installation holes 1011 are arranged in a dispersed manner and form a cylinder shape. In this embodiment, the positions where the first mounting holes 1011 are distributed are positions for mounting the through-channels. In the case where the first panel 101 is the outside of the headwall structure, the first mounting hole 1011 is provided on the first panel 101. As shown in fig. 9, fig. 9 shows a schematic view of a portion of the bottom of the end wall structure, in this embodiment, a strip-shaped thickened area 104 is provided for the first panel 101, and the thickened area 104 corresponds to the installation position of the through channel, that is, the whole thickened area 104 is cylindrical, which corresponds to the distribution of the plurality of first installation holes 1011. By providing the first mounting hole 1011 in this thickened region 104, the bolt can be stably fixed, thereby achieving connection between the through passage and the headwall structure.
Fig. 10 is a cross-sectional view in the direction A-A of fig. 1, and referring to fig. 10, the thickened area 104 is disposed on the inner side of the first panel 101 near the second panel 102, so that the thickened area 104 is completely located inside the profile, and the thickened area 104 does not affect the flatness of the surface of the end wall panel 1. The thickened region 104 is a region obtained by thickening a partial region of the first panel 101, and has a cross section of a boss structure protruding toward the second panel 102, as shown in fig. 10. In this embodiment, a threaded bushing may be disposed in the first mounting hole 1011, so that a steel through-channel mounting bolt (for example, the bolt 6 in fig. 10) may be stably screwed into the first mounting hole 1011, and the problem of contact mounting between the steel bolt and the aluminum profile different materials may be solved. The mounting mode can reduce the area of the thick aluminum wall area through partial thickening of the die cavity, greatly improve the utilization rate of the thickened area 104 and can achieve both light weight and reliability.
The sections required for the end wall panel 1 may be divided according to the sections to be thickened, as shown in fig. 2, only the lower beam section 112 and the two inner column sections 121 may be locally thickened, and the remaining sections (including the upper beam section 111 and the outer column section 122) may not be locally thickened. The two inner column profiles 121 are internally provided with strip-shaped thickened areas 104 in the vertical direction, and the lower beam profile 112 is internally provided with U-shaped strip-shaped thickened areas 104, so that the connection of the whole through channel is realized.
Alternatively, as shown in fig. 9 and 10, at least one side of the boss structure is a slope that transitions to the inside of the first panel 101, and corners of the slope are rounded. In this embodiment, two sides of the local thickened area 104 are provided with bevel angles to transition to an area with thinner wall thickness, and corners of the local thickened area 104 are provided with rounded corners, which is beneficial to force conduction. If the thickened region 104 is close to the rib 103, the rib 103 may be used as one side of the thickened region 104, and the thickened region 104 on the right side in fig. 9 and 10 may be seen.
Further optionally, referring to fig. 10, the headwall structure further includes a mounting backplate 3. Second mounting holes 1012 corresponding to the bolts one by one are formed in the first panel 101 at positions for mounting the plurality of bolts; the second panel 102 is provided with a back plate groove 105 at a position corresponding to the second mounting holes 1012, the mounting back plate 3 is arranged in the back plate groove 105, and the mounting back plate 3 is provided with third mounting holes corresponding to the second mounting holes 1012 one by one.
In the embodiment of the present invention, for the clustered mounting holes, the distances of the mounting holes are similar, such as a plurality of (three or four) second mounting holes 1012 are clustered adjacently in fig. 2, and in the embodiment, the mounting back plate 3 is provided for the second mounting holes 1012, and the mounting stability is improved by using the mounting back plate 3. As shown in fig. 10, the second panel 102 is provided with a back plate groove 105, so that the mounting back plate 3 can be placed in the back plate groove 105, and the mounting back plate 3 is provided with third mounting holes corresponding to the second mounting holes 1012 one by one, so that other bolts (such as the bolts 7 in fig. 10) can sequentially penetrate through the second mounting holes 1012 and the third mounting holes, and further, other components can be fixedly mounted on the end wall panel 1. As shown in fig. 10, a mount 8 may be provided on the outside of the end wall panel 1 to further improve the strength. The mode of placing and installing the backboard 3 in the backboard groove 105 can well solve the interface installation requirement of similar distance, and can also consider light weight and reliability. For example, for a through-channel with trim, it has a block of trim interface bolt mounting area. The interior mounting backboard 3 provides an interface by providing a backboard slot 105 in the vehicle interior side panel (second panel 102). The incorporation of localized thickened regions 104 provides for an overall stable installation of the through-passage. The end wall panel 2 adopts a mode of locally thickening a section cavity and opening a backboard mounting port, so that the problem of steel-aluminum mixed connection can be solved, and the connection reliability of all interfaces and the overall weight reduction of the end wall are considered.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art can easily think about variations or alternatives within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An end wall structure comprising: an end wall panel (1), an end wall outer frame (2) and an installation backboard (3);
the end wall panel (1) comprises a plurality of profiles; the end wall outer frame (2) is arranged at the edge position of the end wall panel (1);
the inner ring of the end wall outer frame (2) is provided with a groove-shaped nesting interface (201), and the edge of the end wall panel (1) is inserted into the nesting interface (201);
the outer ring of the end wall outer frame (2) is provided with a lap joint interface (202), and the lap joint interface (202) is used for connecting other vehicle body structures;
the end wall panel (1) comprises: a cross beam section bar (11), a left upright column section bar (12) and a right upright column section bar (13);
the left upright column section bar (12) and the right upright column section bar (13) are arranged below the cross beam section bar (11);
the left upright post section bar (12) and the right upright post section bar (13) are arranged at intervals, and a door zone (14) is formed between the left upright post section bar (12) and the right upright post section bar (13);
the lower central area of the beam profile (11) is provided with a concave area (141) consistent with the width of the door area (14);
-the side of the left upright profile (12) close to the door zone (14) is aligned with the left edge of the recessed area (141), and the side of the right upright profile (13) close to the door zone (14) is aligned with the right edge of the recessed area (141);
the profile comprises a first panel (101), a second panel (102) and ribs (103) arranged between the first panel (101) and the second panel (102);
the first panel (101) is provided with a strip-shaped thickening area (104) at the position for installing the through channel, the thickening area (104) is arranged on the inner side of the first panel (101) close to the second panel (102), and the section of the thickening area (104) is a boss structure protruding to the second panel (102);
the thickened region (104) is provided with a plurality of first mounting holes (1011), and the first mounting holes (1011) are used for mounting the through channels;
second mounting holes (1012) which are in one-to-one correspondence with the bolts are formed in the first panel (101) at positions for mounting the bolts;
a backboard groove (105) is formed in the second panel (102) at a position corresponding to the second mounting hole (1012), the mounting backboard (3) is arranged in the backboard groove (105), and the mounting backboard (3) is provided with third mounting holes corresponding to the second mounting holes (1012) one by one;
the end wall outer frame (2) is a structure obtained by bending a strip-shaped section bar to be consistent with the edge shape of the end wall panel (1);
and a groove (203) is arranged at the nesting interface (201) of the end wall outer frame (2) at the position where the bending radius is smaller than the preset value.
2. End wall structure according to claim 1, characterized in that transverse ribs (103) are provided in the cross beam profile (11);
part of the structure of one of the transverse ribs (103) is the upper edge of the recessed area (141).
3. End wall structure according to claim 1, characterized in that the beam profile (11) comprises: an upper beam section bar (111) and a lower beam section bar (112) which are arranged up and down;
the left upright section bar (12) and the right upright section bar (13) both comprise: an inner column section bar (121) and an outer column section bar (122) which are arranged left and right;
the upper edges of the inner column section bar (121) and the outer column section bar (122) are connected with the lower edge of the lower cross beam section bar (112); the inner pillar profile (121) is closer to the door zone (14) than the outer pillar profile (122).
4. An end wall structure according to claim 1, wherein at least one side of the boss structure is a chamfer that transitions to the inside of the first panel (101), and corners of the chamfer are rounded.
5. The headwall structure of claim 1, wherein the overlap interface (202) includes: a lap plate (2021), a connection plate (2022) and a limit plate (2023);
the connecting plate (2022) is used for connecting the lapping plate (2021) and the limiting plate (2023) to form the h-shaped lapping interface (202);
the connecting plate (2022) is obliquely arranged, and one end of the connecting plate (2022) connected with the limiting plate (2023) is closer to the other vehicle body structure than one end connected with the lapping plate (2021);
the lap plate (2021) is used for lap-jointing the inner sides of the outer plates of the other vehicle body structures, and the limiting plate (2023) is used for limiting the inner plates of the other vehicle body structures.
6. The headwall structure of claim 5, further comprising: an adjusting cushion block (4);
the adjusting cushion block (4) is arranged between the limiting plate (2023) and the inner plate of the other vehicle body structure and is abutted against the limiting plate (2023) and the inner plate of the other vehicle body structure.
7. End wall structure according to claim 1, characterized in that the end wall casing (2) comprises: an upper outer frame (21), a left outer frame (22) and a right outer frame (23);
the left outer frame (22) and the right outer frame (23) are respectively connected with two ends of the upper outer frame (21) to form the U-shaped end wall outer frame (2).
8. A method of making an end wall structure according to any one of claims 1 to 7, comprising:
splicing a plurality of sectional materials into an original panel;
cutting the original panel according to the required outline shape of the end wall to obtain an end wall panel (1);
bending the strip-shaped section bar to be consistent with the edge shape of the end wall panel (1) to obtain an end wall outer frame (2);
and inserting the end wall panel (1) and the nested interface (201) of the end wall outer frame (2) to generate the end wall structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111562846.0A CN114407946B (en) | 2021-12-20 | 2021-12-20 | End wall structure and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111562846.0A CN114407946B (en) | 2021-12-20 | 2021-12-20 | End wall structure and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202448992U (en) * | 2011-12-30 | 2012-09-26 | 青岛四方庞巴迪铁路运输设备有限公司 | End wall for railway vehicle |
| CN104590295B (en) * | 2014-12-16 | 2018-05-11 | 中车青岛四方机车车辆股份有限公司 | A kind of high-speed EMU and car body, end wall structure |
| CN104554307A (en) * | 2014-12-18 | 2015-04-29 | 南车青岛四方机车车辆股份有限公司 | Motor train unit body and inner windshield mounting structure thereof |
| CN204915697U (en) * | 2015-08-24 | 2015-12-30 | 南车青岛四方机车车辆股份有限公司 | Rail vehicle and side wall subassembly thereof |
| CN105752095B (en) * | 2016-04-08 | 2019-07-16 | 中车青岛四方机车车辆股份有限公司 | A kind of rail vehicle sit-astride rear end wall construction |
| CN106740920A (en) * | 2016-12-01 | 2017-05-31 | 中车青岛四方机车车辆股份有限公司 | Track vehicle body structure and the rail vehicle with it |
| CN112977523B (en) * | 2019-12-16 | 2022-09-23 | 中车唐山机车车辆有限公司 | Control vehicle and vehicle body thereof |
| CN112026807B (en) * | 2020-08-24 | 2021-11-16 | 青岛中车四方轨道车辆有限公司 | Trolley bus body with guide rails |
| CN112078611A (en) * | 2020-09-04 | 2020-12-15 | 中车长春轨道客车股份有限公司 | Novel lightweight aluminum alloy subway end wall structure |
| CN113291334B (en) * | 2021-05-24 | 2022-05-03 | 常州市新创智能科技有限公司 | End wall and rail vehicle thereof |
| CN113386806A (en) * | 2021-07-30 | 2021-09-14 | 中车青岛四方机车车辆股份有限公司 | Railway vehicle end wall composition and through passage design method |
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