CN114407946A - End wall structure and manufacturing method thereof - Google Patents
End wall structure and manufacturing method thereof Download PDFInfo
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- CN114407946A CN114407946A CN202111562846.0A CN202111562846A CN114407946A CN 114407946 A CN114407946 A CN 114407946A CN 202111562846 A CN202111562846 A CN 202111562846A CN 114407946 A CN114407946 A CN 114407946A
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- end wall
- panel
- outer frame
- profile
- upright column
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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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- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention provides an end wall structure and a manufacturing method thereof, wherein the end wall structure comprises: end wall panels and end wall outer frames; 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 port, and the edge of the end wall panel is inserted in the nesting port; the outer ring of the end wall outer frame is provided with a lap joint, and the lap joint is used for connecting other vehicle body structures. By 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 nested interface in a splicing manner to realize connection, and the nested interface can cover the end wall panel on the inner side and the outer side of the 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 region can be improved through the nested structure, the thickness of the section bar of the end wall panel can not be increased, and the light-weight effect can be achieved.
Description
Technical Field
The invention relates to the technical field of rail transit vehicles, in particular to a headwall structure and a manufacturing method thereof.
Background
The vehicle body of the rail vehicle generally comprises an underframe, side walls, end walls and a roof, wherein the end walls are positioned at the end parts of the vehicle body and are large structural components for simultaneously connecting the roof, the side walls and the underframe; the end walls have 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 and modularly install the end wall, the side wall, the roof and the like, 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. 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, the sound insulation and the like of the end walls of the existing trains, and the air tightness and the sound insulation of the end walls are poor easily due to the arrangement of connecting pieces. In addition, in order to meet the requirement of light weight 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
To solve the above problems, an object of the present invention is to provide a headwall structure and a method for manufacturing the same.
In a first aspect, an embodiment of the present invention provides an end wall structure, including: end wall panels and end wall outer frames;
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 port, and the edge of the end wall panel is inserted in the nesting port;
the outer ring of the end wall outer frame is provided with a lap joint, and the lap joint is used for connecting other vehicle body structures.
In one possible implementation, the end wall panel includes: the beam profile, the left upright column profile and the right upright column profile;
the left upright column section bar and the right upright column section bar are both 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 area is formed between the left upright column section bar and the right upright column section bar.
In a possible realization, the lower central area of the cross-beam profile is provided with a recessed area corresponding to the width of the door area;
one side of the left upright section adjacent to the door zone is aligned with the left edge of the recessed area, and one side of the right upright section adjacent to the door zone is aligned with the right edge of the recessed area.
In one possible implementation, transverse ribs are arranged in the beam profile;
part of the structure of one of the transverse ribs is the upper edge of the recessed region.
In one possible implementation, the cross-beam profile comprises: the upper cross beam section and the lower cross beam section are arranged up and down;
the left upright column section bar and the right upright column section bar both comprise: the left and right inner upright column section bars and the outer upright column section bars are arranged;
the upper edges of the inner upright column section bar and the outer upright column section bar are connected with the lower edge of the lower cross beam section bar; the inner stud profile is closer to the door zone than the outer stud profile.
In one possible implementation, the profile comprises a first panel, a second panel and a rib arranged between the first panel and the second panel;
the position, used for installing the through passage, of the first panel is a strip-shaped thickened area, the thickened area is arranged on the inner side, close to the second panel, of the first panel, and the section of the thickened area is of a boss structure protruding towards the second panel;
the thickened area is provided with a plurality of first mounting holes, and the first mounting holes are used for mounting the through passage.
In a possible implementation manner, at least one side of the boss structure is an inclined surface that transitions to the inner side of the first panel, and corners of the inclined surface are rounded corners.
In one possible implementation, the headwall structure further includes a mounting backplate;
second mounting holes which correspond to the bolts one to one are formed in the positions, used for mounting the bolts, of the first panel;
and a backboard groove is formed in the position, corresponding to the second mounting hole, of the second panel, the mounting backboard is arranged in the backboard groove, and the mounting backboard is provided with third mounting holes in one-to-one correspondence with the second mounting holes.
In one possible implementation, the lap joint includes: the lap joint plate, the connecting plate and the limiting plate;
the connecting plate is used for connecting the lap joint plate and the limiting plate to form an h-shaped lap joint interface;
the connecting plate is obliquely arranged, and one end of the connecting plate, which is connected with the limiting plate, is closer to the other vehicle body structures than one end of the connecting plate, which is connected with the lap joint plate;
the lap joint plate is used for lap joint the inner sides of the outer plates of 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 plates of the other vehicle body structures and is abutted against the limiting plate and the inner plates of the other vehicle body structures.
In one possible implementation, the end wall outer frame is a structure obtained by bending a strip-shaped section bar into a shape consistent with the edge shape of the end wall panel;
and at the position where the bending radius is smaller than the preset value, a slot is formed in the nesting interface of the end wall outer frame.
In one possible implementation, the headwall outer 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, an embodiment of the present invention further provides a method for manufacturing the headwall structure described above, including:
splicing a plurality of sectional materials into an original panel;
cutting the original panel according to the required contour shape of the end wall to obtain an end wall panel;
bending the strip-shaped section into a shape 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 nesting interface of the end wall outer frame to generate the end wall structure.
In the solution provided by the first aspect of the embodiments of the present invention, the end wall panels are formed by using a plurality of profiles, so that the end wall panels in a desired shape can be conveniently manufactured; the inner ring of the end wall outer frame is provided with a groove-shaped nested interface, so that the end wall panel can be inserted into the nested interface in a plugging mode to realize connection, the nested interface can cover the end wall panel on the inner side and the outer side of the carriage, 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 end wall structure has better air tightness and sound insulation. Moreover, the end wall panel and the end wall outer frame can be uniformly connected through the groove-shaped nested interfaces, the end wall is optimized, the end face strength is improved, the end wall structure can ensure that longitudinal force can be uniformly transmitted to large components such as side walls, an underframe and a roof, and the integral bearing of a vehicle body can be improved. In addition, because the end wall structure is connected along with roof, side wall outward, the relative end shingle nail needs higher structural strength, can promote the local strength in this region through nested structure, and can not increase the section bar thickness of end shingle nail, can reach lightweight effect.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 illustrates a schematic structural view of an inboard side of a headwall structure provided by an embodiment of the present invention;
FIG. 2 is a schematic structural view of the exterior side of a headwall structure provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a partial structure of a headwall outer frame according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an original panel according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a lower cross-beam profile provided by an embodiment of the invention;
FIG. 6 is a schematic structural diagram of an upper outer frame according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of an end wall casing according to an embodiment of the present invention;
fig. 8 is a schematic diagram illustrating an application scenario of the headwall structure according to the embodiment of the present invention;
FIG. 9 is a schematic diagram illustrating 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 in fig. 1.
Icon:
1-end wall panel, 101-first panel, 102-second panel, 103-rib, 104-thickening region, 105-back plate groove, 1011-first mounting hole, 1012-second mounting hole, 11-beam profile, 12-left column profile, 13-right column profile, 14-door region, 141-recessed region, 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-overlapping interface, 2021-overlapping plate, 2022-connecting plate, 2023-limiting plate, 203-grooving, 3-mounting back plate, 4-adjusting cushion block, 5-supplementing plate, 6-bolt, 7-bolt and 8-mounting seat.
Detailed Description
In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The embodiment of the invention provides a headwall structure which can be connected with other vehicle body structures such as an underframe, a side wall or a vehicle roof. Referring to fig. 1 to 3, the headwall structure includes: end wall panels 1 and end wall outer frames 2. Wherein, the end wall panel 1 comprises a plurality of sectional materials; 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 headwall frame 2 is equipped with overlap joint 202, and overlap joint 202 is used for connecting other automobile body structures.
In the embodiment of the present invention, the end wall panel 1 is a plate-like structure, and the middle area of the lower portion thereof is a door-shaped area for people to pass through, which is referred to as a door area 14 in the embodiment. In order to obtain the end wall panel 1 conveniently, the end wall panel 1 comprises a plurality of sectional materials, namely, the end wall panel 1 is generated by using the plurality of sectional materials. For example, the end wall panel 1 includes an upper side profile, a left side profile, and a right side profile; as shown in fig. 1 and 2, the end wall panel 1 includes: a beam profile 11, a left upright profile 12 and a right upright profile 13. Fig. 1 is a schematic structural view of the inner side of the end wall structure vehicle, and fig. 2 is a schematic structural view of the outer side of the end wall structure vehicle.
The end wall panel 1 has a shape, the edge shape of the end wall panel 1 is consistent with the required outline shape of the end wall, and the edge shape of the end wall panel 1 can be determined according to the vehicle type. The end wall outer frame 2 is provided with a nesting interface 201 and an overlapping interface 202, the nesting interface 201 is used for being connected with the end wall panel 1, and the overlapping interface 202 is used for being connected with other vehicle body structures, such as a side wall, a vehicle roof and the like, so that the connection between the end wall and the side wall, the vehicle roof and the like is realized. The nesting connector 201 is of a groove-shaped structure, so that the end wall panel 1 can be inserted into the nesting connector 201, and the end wall panel 1 and the end wall outer frame 2 are connected. For example, referring to fig. 3, the nesting port 201 is flanked by baffles to form a trough-like structure between which the edge of the end wall panel 1 can be inserted. The end wall panel 1 and the nesting interface 201 can be connected by means of splicing 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 in a required shape can be conveniently manufactured; the inner ring of the end wall outer frame 2 is provided with the groove-shaped nested interface 201, so that the end wall panel 1 can be inserted into the nested interface 201 in a plugging mode to realize connection, the nested interface 201 can cover the end wall panel 1 on the inner side and the outer side of the carriage, the air tightness and the sound insulation of the connection part between the end wall panel 1 and the end wall outer frame 2 can be improved, and the end wall structure has better air tightness and sound insulation. Moreover, the groove-shaped nesting connector 201 enables the end wall panel 1 and the end wall outer frame 2 to be uniformly connected, the end wall is optimized, the end face strength is improved, the end wall structure can ensure that longitudinal force is uniformly transmitted to large components such as side walls, an underframe and a roof, and the integral bearing of a vehicle body can be improved. In addition, because the end wall structure is connected along with roof, side wall outward, the relative end shingle nail 1 needs higher structural strength, can promote the local strength in this region through nested structure, and can not increase the section bar thickness of end shingle nail 1, can reach lightweight effect.
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 present invention further provides a method for manufacturing the headwall structure, which includes steps a1-a 4:
step A1: splicing a plurality of profiles into an original panel.
Step A2: and cutting the original panel according to the required contour shape of the end wall to obtain the end wall 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 the beginning, and the profile needs to be cut into the profile with the desired contour 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, because welding is needed in the splicing process, errors are easily caused due to section bar deformation, and the profile precision of the whole end wall panel is low. This embodiment will be a plurality of primitive section bars concatenation (welding) earlier become primitive panel, later cuts whole primitive panel again, can avoid separately processing back again because of the section bar and weld the error that the back warp leads to, has improved the profile accuracy of end wall panel 1 greatly, makes 1 inner wall edge characteristics of end wall panel consistent in succession, can form good closed sealed characteristic when combining with end wall 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 contour line of the car body, so that the machining times can be reduced, and the process flow is simplified. Figure 4 shows a schematic view of an original panel which has been cut to give an end wall panel 1 having the shape shown in figure 1.
Step A3: and bending the strip-shaped section into a shape consistent with the edge shape of the end wall panel 1 to obtain an end wall outer frame 2.
Step A4: and inserting the nesting interfaces 201 of the end wall panel 1 and the end wall outer frame 2 to generate an end wall structure.
In the embodiment of the invention, the end wall outer frame 2 is obtained 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 that an end wall outer frame 2 consistent with the edge shape of the end wall panel 1 is obtained, and the end wall panel 1 can be inserted into the end wall outer frame 2 to form a required end wall structure. The same section of strip-shaped section bar can be adopted in this embodiment, and the end wall outer frame 2 is bent to make the structure of the end wall outer frame 2 have consistency, and the end wall outer frame has good mechanical properties.
On the basis of the above embodiment, as described above, the end wall panel 1 includes: a beam profile 11, a left upright profile 12 and a right upright profile 13. As shown in fig. 1, 2 and 4, the left upright section bar 12 and the right upright section bar 13 are both arranged below the cross beam section bar 11; left upright section 12 and right upright section 13 set up at interval, and form door district 14 between left upright section 12 and the right upright section 13. The end wall panel 1 with the door zone 14 can be formed using three profiles (beam profile 11, left upright profile 12, right upright profile 13).
Alternatively, as shown in fig. 1, 2 and 4, the cross-beam profile 11 comprises: an upper beam section 111 and a lower beam section 112 arranged above and below. The left upright section 12 and the right upright section 13 each include: and the left and right inner upright column section bars 121 and the outer upright column section bars 122 are arranged. As shown, the upper edges of both the inner and outer upright profiles 121, 122 are connected to the lower edge of the lower cross-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 types of profiles: an upper cross beam profile 111, a lower cross beam profile 112, an inner column profile 121 and an outer column profile 122. The end wall panel 1 required in various scenes can be produced by using the four profiles. The upper cross beam section 111 and the lower cross beam section 112 are two sections that can be inserted into each other, and the inner column section 121 and the outer column section 122 are also two sections that can be inserted into each other. For example, the lower edge of the upper cross-member profile 111 or the upper edge of the lower cross-member profile 112 is provided with a plug interface, so that the upper cross-member profile 111 and the lower cross-member profile 112 can be welded by the plug interface; the outer edge of the inner column profile 121 or the inner edge of the outer column profile 122 may also be provided with a plug interface, so that the inner column profile 121 and the outer column profile 122 can be welded by means of the plug interface. In addition, the outer walls of the inner column section 121 and the outer column section 122 are beveled on the upper edges (or the lower edge of the lower beam section 112 is beveled) so that the lower beam section 112 can be welded with the upper edges of the inner column section 121 and the outer column section 122. The end wall panel 1 is mainly formed by welding various sectional materials, a reinforcing welding part is not required to be added, the number of welding seams and the welding quantity are small, and the local strength of the end wall panel 1 can be greatly improved. In addition, local unevenness of the end wall panel 1 (especially the pressing area of the end wall panel and the through passage) caused by welding deformation can be avoided, the requirement on the surface coating of the end wall is lowered, and the end wall panel has good flatness and manufacturability.
It will be appreciated by those skilled in the art that the upper cross-beam profile 111 and the lower cross-beam profile 112 may be structurally identical profiles, and the inner column profile 121 and the outer column profile 122 may also 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 to improve the overall strength of the section bar. For example, the profile comprises a first panel 101, a second panel 102 and a rib 103 arranged between the first panel 101 and the second panel 102. The beam profile 11, the left upright column profile 12, and the right upright column profile 13, or the upper beam profile 111, the lower beam profile 112, the inner upright column profile 121, and the outer upright column profile 122, which all include a first panel 101, a second panel 102, and a rib 103 disposed between the first panel 101 and the second panel 102.
The ribs 103 in the cross beam profile 11 (or the upper cross beam profile 111 and the lower cross beam profile 112) may be transverse ribs, and the ribs 103 in the left upright column profile 12 and the right upright column profile 13 (or the inner upright column profile 121 and the outer upright column profile 122) may be vertical ribs.
In order to form the door area 14, the left and right pillar sections 12 and 13 may be directly divided and disposed at both sides of the lower portion of the cross beam section 11, so that the door area 14 is formed between the left and right pillar sections 12 and 13. However, this results in a weld seam in the door corner region of the door region 14, for example between the cross-member profile 11 and the left and right pillar profiles 12, 13, at the door corner. In the present embodiment, the lower central region of the cross-beam profile 11 is provided with a recessed region 141 corresponding to the width of the door zone 14. For example, referring to fig. 5, the recessed region 141 may be provided in a lower central region of the lower cross-beam profile 112. Also, as shown in fig. 4, the side of left upright profile 12 adjacent to door zone 14 is aligned with the left edge of recessed area 141, and the side of right upright profile 13 adjacent to door zone 14 is aligned with the right edge of recessed area 141.
In the embodiment of the present invention, the recessed area 141 is disposed in the central area of the lower portion of the beam profile 11 (such as the beam profile 112), and the recessed area 141 is used as the upper structure of the door region 14, so that there is no welding seam in the door corner area of the upper structure of the door region 14, and the strength reduction of the high stress portion due to welding can be avoided, thereby improving the overall strength.
Furthermore, optionally, transverse ribs 103 are provided in the cross beam profile 11; as shown in fig. 5, the lower cross-member profile 112 is provided with transverse ribs 103, and the positions of the inner ribs 103 are shown by dashed lines in fig. 5. Furthermore, a part of one of the transverse ribs 103 is configured as an upper edge of the recessed region 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 at the left and right edges of the recessed area 141, such that the transverse ribs 103 and the left and right sealing plates may form the recessed area 141, and thus the door region 14. In the present exemplary embodiment, when the recess 141 is machined, the inner wall of the transverse beam profile 11, i.e. the ribs 103 inside the transverse beam profile 11, can be used to produce the upper structure of the door region 14 (i.e. the recess 141) with fewer welds. Moreover, for different types of vehicle bodies, the recessed area 141 with the same width can be cut according to the required width of the door area, and the height of the recessed area 141 is unchanged, so that the transverse ribs 103 in the cross beam profile 11 are aligned with the recessed area 141; by using left and right upright profiles 12, 13 of different heights, the height adjustment of the door zone 14 can be achieved.
Optionally, in order to enable the end wall outer frame 2 to adapt to the end wall panels 2 with different contour shapes, and facilitate the assembly of the two, the end wall outer frame 2 provided by this embodiment also includes a plurality of structures. As shown in fig. 1 and 2, the headwall outer frame 2 includes: an upper outer frame 21, a left outer frame 22, and a right outer frame 23; the left and right frames 22 and 23 are connected to both ends of the upper frame 21, respectively, to form a U-shaped end wall frame 2. Fig. 6 shows a schematic structural view of the upper outer 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 the upper outer frame, the left outer frame and the right outer frame can be obtained by bending, 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 cross section are welded in sequence, so that the structure of the joint of the upper outer frame 21, the left outer frame 22 and the right outer frame 23 is continuous and consistent, the overall strength of the end wall outer frame 2 can be ensured, and the end wall outer frame 2 has good mechanical properties. End wall frame 2 is the shaping of bending along with the automobile body contour line, and the outer edge of end wall frame 2 is the automobile body contour line, and this kind of end wall structure can adapt to different automobile body contour shape demands, and 2 weeks of end wall frame do not exist or only exist a small amount of welding parts, can reduce stress concentration and welding deformation, guarantee low profile degree deviation.
Alternatively, the end wall casing 2 is a structure obtained by bending a strip-shaped section bar to conform to the edge shape of the end wall panel 1. In the process of bending the end wall outer frame 2, if the bending radius is too small, the bending part is easy to deform. In the embodiment of the present invention, referring to fig. 3, at the position where the bending radius is smaller than the preset value, the nesting interface 201 of the end wall outer frame 2 is provided with a slot 203. 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. In addition, optionally, after the end wall panel 1 and the end wall outer frame 2 are spliced and welded, an outer frame patch 5 can 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 casing 2 is h-shaped. Fig. 7 shows a schematic cross-sectional view of the headwall casing 2. as shown in fig. 7, the lap joint 202 includes: a lapping plate 2021, a connecting 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 an h-shaped lapping joint 202; the connection plate 2022 is disposed obliquely, and one end of the connection plate 2022 to which the limit plate 2023 is connected is closer to other vehicle body structures than one end to which the lap plate 2021 is connected. The lap joint plate 2021 is used to lap the inner side of the outer panel of the other vehicle body structure, and the limit plate 2023 is used to limit the inner panel of the other vehicle body structure.
In the embodiment of the present invention, the overlapping plate 2021, the connecting plate 2022, and the limiting plate 2023 may be integrally formed into the overlapping joint 202, and the present embodiment divides the overlapping joint 202 into the overlapping plate 2021, the connecting plate 2022, and the limiting plate 2023 for convenience of description, and is not intended to limit the necessity of separation among the three. The left half of fig. 7 shows a cross-sectional view of another vehicle body structure, such as a side wall, a roof, etc., the inner side of the outer panel of the other vehicle body structure is overlapped on the lap-joint panel 2021, and the position of the inner panel of the other vehicle body structure can be limited by the limit panel 2023, so as to avoid the other vehicle body structure from shaking. Further, the connecting plate 2022 between the strap 2021 and the limit plate 2023 is provided obliquely, so that a longitudinal force between the strap 2021 and the limit plate 2023 can be transmitted more favorably (in general, the longitudinal direction of the vehicle, for example, the direction from the head to the tail of the vehicle can be regarded as the longitudinal 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 the side wall of the vehicle body, the outer contour of the end wall can be guaranteed to swing within a certain range when being combined with a vehicle body cylindrical structure, the combination area still meets the combination welding condition, the end wall structure can be welded with other vehicle body structures in a vertical state all the time, and the verticality of the end wall panel 2 can be guaranteed.
Further optionally, referring to fig. 7, the headwall structure further comprises: adjusting a 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 lap joint 202 is matched with the adjusting cushion block 4, so that the automobile roof and the side wall with different thicknesses can be adapted, meanwhile, welding seams are prevented from appearing in a combination area, and good welding conditions are provided. The adjusting cushion block 4 can make the lap joint area of the circumference uniform and consistent, and the purpose of designing the high-airtightness platformized end wall suitable for various cylindrical vehicle bodies is achieved. Generally, the roof profile is thinner and the side wall profile is thicker, and fig. 8 shows a structural schematic diagram of adding the adjusting pad 4 to the roof, so that the lap joint 201 can be applied to side walls and roofs with different thicknesses. When the relative distance of the front end and the rear end of the side wall, the roof and the chassis has deviation, butt joint assembly welding can still be realized with the end wall structure, and the verticality of the end wall and the length of the whole vehicle can be guaranteed to be unchanged.
On the basis of the above embodiments, the end wall structure needs to fix other structures, such as a through passage; 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 in thickness, making it difficult to firmly attach the through passage. This embodiment carries out local thickening to the end wall structure to improve the reliability of installation. As mentioned above, the profile comprises a first panel 101, a second panel 102 and a rib 103 arranged between the first panel 101 and the second panel 102. As shown in fig. 9, a strip-shaped thickened region 104 is provided at a position for installing the through passage in the first panel 101, the thickened region 104 is disposed at an inner side of the first panel 101 close to the second panel 102, and a cross section of the thickened region 104 is a boss structure protruding toward the second panel 102; thickened region 104 is provided with a plurality of first mounting holes 1011, first mounting holes 1011 being used for mounting through passages.
In the embodiment of the present invention, the outer side of the end wall is used for installing the through passage, and the through passage is installed on the outer side of the end wall structure, at this time, an installation hole needs to be provided on the outer side of the end wall structure, in this embodiment, the installation hole is referred to as a first installation hole 1011, a schematic distribution diagram of the first installation hole 1011 can be seen in fig. 2, fig. 2 is a schematic structural diagram of the outer side of the end wall structure vehicle, and the plurality of first installation holes 1011 are arranged in a dispersed manner and form a cylindrical shape. In this embodiment, the first mounting holes 1011 are distributed at positions for mounting the through passage. The first mounting hole 1011 is provided on the first panel 101 in a case where the first panel 101 is an outer side of the headwall structure. As shown in fig. 9, fig. 9 shows a partial structural schematic view of the bottom of the end wall structure, in this embodiment, a strip-shaped thickened region 104 is provided for the first panel 101, and the thickened region 104 corresponds to the installation position of the through via, i.e., the thickened region 104 is cylindrical as a whole and corresponds to the distribution of the plurality of first installation holes 1011. By providing the first mounting hole 1011 in this thickened area 104, the bolt can be fixed stably, so that the connection between the through passage and the headwall structure is achieved.
Fig. 10 is a cross-sectional view taken along the direction a-a in fig. 1. referring to fig. 10, a thickened area 104 is provided on the inner side of the first panel 101 near the second panel 102, so that the thickened area 104 is located completely 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 local 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 the embodiment, the threaded bushing can be arranged in the first mounting hole 1011, so that a steel through-passage mounting bolt (for example, the bolt 6 in fig. 10) can be stably screwed into the first mounting hole 1011, and the problem of contact mounting between the steel bolt and different materials of the aluminum profile can be solved. This kind of mounting means passes through the local thickening of die cavity, can reduce thick aluminium wall area, makes the regional 104 utilization ratio of thickening promote by a wide margin, can compromise lightweight and reliability.
The required profiles of the end wall panels 1 can be divided by the thickened portions as required, as shown in fig. 2, only the lower beam profile 112 and the two inner upright profiles 121 can be locally thickened, and the rest of the profiles (including the upper beam profile 111 and the outer upright profiles 122) can be not locally thickened. The two inner upright column profiles 121 are internally provided with strip-shaped thickened areas 104 in the vertical direction, and the lower cross beam profile 112 is internally provided with a U-shaped strip-shaped thickened area 104, so that the connection of the whole through passage is realized.
Optionally, as shown in fig. 9 and 10, at least one side of the boss structure is a bevel transitioning to the inside of the first panel 101, and corners of the bevel are rounded. In this embodiment, the two sides of the local thickening region 104 are provided with oblique angles to transition to the region with thinner wall thickness, and the corners of the local thickening region 104 are provided with fillets, which is beneficial to force transmission. If the thickened area 104 is close to the rib 103, the rib 103 can be used as one side of the thickened area 104, specifically, refer to the thickened area 104 on the right side in fig. 9 and 10.
Further optionally, referring to fig. 10, the headwall structure further comprises a mounting backing panel 3. Second mounting holes 1012 corresponding to the bolts one by one are formed in the first panel 101 at positions for mounting the bolts; the second panel 102 is provided with a back plate groove 105 at a position corresponding to the second mounting hole 1012, the mounting back plate 3 is disposed 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.
In the embodiment of the present invention, for clustered installation holes, the installation holes are close to each other, for example, in fig. 2, a plurality of (three or four) second installation holes 1012 are clustered adjacently, in this embodiment, the installation back plate 3 is disposed for the second installation holes 1012, and the installation stability is improved by using the installation back plate 3. As shown in fig. 10, the second panel 102 is opened with a back plate slot 105 so that the mounting back plate 3 can be placed in the back plate slot 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 (e.g., the bolts 7 in fig. 10) can sequentially penetrate through the second mounting holes 1012 and the third mounting holes, so that other components can be fixedly mounted on the end wall panel 1. As shown in fig. 10, a mounting seat 8 may be provided on the outer side of the end wall panel 1 to further improve strength. The mode of placing and installing the back plate 3 in the back plate groove 105 can well meet the installation requirements of interfaces with close distances and can also give consideration to light weight and reliability. For example, for a through passage with trim, it has a blocky trim interface bolt mounting area. The interface is provided by opening a back panel slot 105 in the panel (second panel 102) on the inboard side of the vehicle, into which the back panel 3 is fitted. In combination with the local thickened area 104, an overall stable mounting of the through passage is achieved. The end wall panel 2 adopts a combination mode of locally thickening a section bar cavity and opening a back plate mounting opening, can solve the problem of steel-aluminum hybrid connection, and also considers the connection reliability of each interface and the whole lightweight of an end wall.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and the present invention shall be covered by the claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (13)
1. A headwall structure, comprising: the end wall comprises an end wall panel (1) and an end wall outer frame (2);
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 (202), and the lap joint (202) is used for connecting other vehicle body structures.
2. End wall structure according to claim 1, characterized in that the end wall panel (1) comprises: a cross beam section bar (11), a left column section bar (12) and a right column section bar (13);
the left upright column profile (12) and the right upright column profile (13) are both arranged below the cross beam profile (11);
the left upright column profile (12) and the right upright column profile (13) are arranged at intervals, and a door area (14) is formed between the left upright column profile (12) and the right upright column profile (13).
3. End wall structure according to claim 2, characterized in that the lower central area of the beam profile (11) is provided with a recessed area (141) corresponding to the width of the door zone (14);
the side of the left upright profile (12) close to the door area (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 area (14) is aligned with the right edge of the recessed area (141).
4. End wall structure according to claim 3, characterized in that transverse ribs (103) are provided in the beam profiles (11);
part of the structure of one of the transverse ribs (103) is the upper edge of the recess (141).
5. End wall structure according to claim 2, characterized in that the beam profile (11) comprises: an upper cross beam profile (111) and a lower cross beam profile (112) which are arranged up and down;
the left upright column section bar (12) and the right upright column section bar (13) both comprise: the left and right inner upright column profiles (121) and the outer upright column profiles (122);
the upper edges of the inner upright column section bar (121) and the outer upright 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).
6. A headwall structure as claimed in any one of claims 1 to 5, wherein the profile comprises a first panel (101), a second panel (102) and a tendon (103) disposed between the first panel (101) and the second panel (102);
the position, used for installing the through passage, of the first panel (101) is a strip-shaped thickened area (104), the thickened area (104) is arranged on the inner side, close to the second panel (102), of the first panel (101), and the section of the thickened area (104) is of a boss structure protruding towards the second panel (102);
the thickening area (104) is provided with a plurality of first mounting holes (1011), and the first mounting holes (1011) are used for mounting the through passage.
7. A headwall structure as claimed in claim 6, wherein at least one side of the boss structure is a chamfer which transitions into the inside of the first panel (101) and the chamfer is rounded at a corner.
8. End wall structure according to claim 6, further comprising a mounting back plate (3);
second mounting holes (1012) which correspond to the bolts in a one-to-one mode are formed in positions, used for mounting the bolts, of the first panel (101);
a backboard groove (105) is formed in the position, corresponding to the second mounting hole (1012), of the second panel (102), the mounting backboard (3) is arranged in the backboard groove (105), and third mounting holes corresponding to the second mounting holes (1012) in a one-to-one mode are formed in the mounting backboard (3).
9. The headwall structure of claim 1, wherein the lap joint (202) comprises: the lapping plate (2021), the connecting plate (2022) and the limiting 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 joint (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 of the connecting plate (2021) connected with the lap plate;
the lap joint plate (2021) is used for lapping the inner sides of the outer plates of the other vehicle body structures, and the limit plate (2023) is used for limiting the inner plates of the other vehicle body structures.
10. The headwall structure of claim 9, further comprising: an adjusting cushion block (4);
the adjusting 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.
11. End wall structure according to claim 1, characterized in that the end wall casing (2) is a structure obtained by bending a strip-like profile in conformity with the edge shape of the end wall panel (1);
and at the position where the bending radius is smaller than the preset value, a slot (203) is formed in the nesting interface (201) of the end wall outer frame (2).
12. 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).
13. A method of making a headwall structure as defined in any one of claims 1 to 12, including:
splicing a plurality of sectional materials into an original panel;
cutting the original panel according to the required contour shape of the end wall to obtain an end wall panel (1);
bending the strip-shaped section into a shape 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 nesting interface (201) of the end wall outer frame (2) to generate the end wall structure.
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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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| CN114407946B (en) | 2023-06-23 |
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