Connecting structure for side skirt panel and longitudinal beam of novel passenger car
By adopting a split-type wrap-around connection structure between the side skirt panel and the longitudinal beam of the light passenger vehicle, the problem of unreasonable force transmission path is solved, stress dispersion and structural strength are improved, local maintenance is supported, and maintenance costs are reduced.
Patent Information
- Application Number
- CN202423310071.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The unreasonable force transmission path of the irregularly shaped connecting components between the side skirts and the longitudinal beams of the frame of the light passenger vehicle leads to cracking or splitting of the welds, which cannot be locally rectified, increasing the experimental cycle and cost.
The structure adopts a split assembly structure consisting of a front arc connecting plate, a rear arc connecting plate, and a transition connecting plate to form an encircling irregular component. This rationally arranges the force transmission path, avoids stress concentration, and enhances the structural rigidity and fatigue durability.
It effectively disperses stress, prevents weld cracking and splitting, improves the compatibility and overall structural strength of thin sheet metal parts and frame longitudinal beams in light passenger vehicles, and supports partial replacement to reduce maintenance costs.
Smart Images
Figure CN223520926U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the mould design field, concretely relates to a connecting structure for novel passenger train side skirt plate and longitudinal beam. BACKGROUND
[0002] Light passenger train belongs to non-bearing type car body, and its working condition is relatively bad, and there are many car body sheet parts and frame longitudinal beam skeleton compatibility penetration problems in the lower car body, especially the special-shaped connecting structure between the existing side skirt plate and the frame longitudinal beam is an integral U-shaped structure, the force transmission path of this U-shaped special-shaped connecting member is unreasonable, and stress is often too concentrated to be effectively released during durability test, and welding point cracking or even cracking problems often occur, and local modification and replacement cannot be carried out, and only the whole can be replaced, which greatly increases the test cycle and modification cost. SUMMARY
[0003] The utility model provides a connecting structure for novel passenger train side skirt plate and longitudinal beam, can solve light passenger train sheet part and frame longitudinal beam compatibility penetration problem, guarantees the connection between the lower car body side skirt plate and the frame longitudinal beam, to satisfy good structural strength and fatigue durability performance, it mainly uses the following technical scheme:
[0004] A connecting structure for novel passenger train side skirt plate and longitudinal beam, including the front arc connecting plate and rear arc connecting plate and transition connecting plate between the side skirt plate and the longitudinal beam, the front arc connecting plate and the rear arc connecting plate are parallel and vertically placed, and the bottom edges of the two are bent to form bottom turn-up parts welded with the passenger train floor, the front arc connecting plate and rear arc connecting plate respectively include two different side lengths, and the two side edges are bent to form side turn-up parts, one side turn-up part is used for welding with the longitudinal beam, the other side turn-up part is used for welding with the side skirt plate, and the length is greater than the length of the side turn-up part used for welding with the longitudinal beam, the transition connecting plate is located between the front arc connecting plate and the rear arc connecting plate, and is parallel to the passenger train floor, the transition connecting plate is welded and fixed with the front arc connecting plate and the rear arc connecting plate, and part of the transition connecting plate is located on the top of the longitudinal beam.
[0005] Preferably, the transition connecting plate includes two different side lengths and opposite side wings, one side wing is integrally extended to form a first inner turn-up part, and the other side wing is partially extended to form a second inner turn-up part, the length of the first inner turn-up part is equal to the length of the second inner turn-up part, and the transition connecting plate is welded and fixed with the front arc connecting plate and the rear arc connecting plate through the first inner turn-up part and the second inner turn-up part.
[0006] Preferably, the transition connecting plate further comprises a covering portion between the two side wings, the covering portion is close to one end of the longitudinal beam, and when the transition connecting plate is welded and fixed with the front arc connecting plate and the rear arc connecting plate respectively, the covering portion is in close contact with the top wall of the longitudinal beam.
[0007] Preferably, the transition connecting plate further has an inner arc edge between the two side wings, and the opening of the inner arc edge faces the side wall skirt plate.
[0008] Preferably, the front arc connecting plate and the rear arc connecting plate respectively have a transition edge between the two side turning portions and corresponding to the bottom turning portion.
[0009] Preferably, the transition edge is in a "concave arc" shape or is arranged obliquely.
[0010] Preferably, the front arc connecting plate and the rear arc connecting plate are welded on the passenger car floor by the bottom turning portion being arranged obliquely or vertically.
[0011] Preferably, the front arc connecting plate and the rear arc connecting plate and the transition connecting plate are all in a trapezoidal structure.
[0012] Preferably, the front arc connecting plate and the rear arc connecting plate are both concave to form a weight reduction groove.
[0013] Preferably, a plurality of convex ribs are arranged on the side turning portion at intervals, and each convex rib extends along the side length direction of the side turning portion.
[0014] From the above description of the present application, compared with the prior art, the present application has the following beneficial effects:
[0015] (1) The connecting structure for the side wall skirt plate and the longitudinal beam of the new type passenger car can solve the compatibility penetration problem of the thin plate member and the frame longitudinal beam of the light passenger car, ensure the connection between the side wall skirt plate of the lower car body and the frame longitudinal beam, and meet the good structural strength and fatigue durability performance. The technical scheme of the present application replaces the existing U-shaped structure member, reasonably arranges the structure position and structure shape of the front arc connecting plate, the rear arc connecting plate and the transition connecting plate three sheet metal structures in space, and forms a ring type special-shaped component by assembling the three in a split type, which not only can realize the ring connection of the longitudinal beam and the side wall skirt plate, meet the good structural rigidity organization and the force transmission path setting, effectively disperse and release the stress, avoid the quality problems such as cracking and cracking of the welding points of the longitudinal beam connecting member, effectively improve the compatibility of the thin plate member and the frame longitudinal beam of the light passenger car, strengthen the overall structural strength, and in the later period, if repair work occurs, one single piece can be replaced locally, and the cost is reduced.
[0016] (2) In the technical scheme, the inner arc edges between the two side wings of the transition plate are in semicircular arc shape, and the transition edges of the front arc connecting plate and the rear arc connecting plate are in "concave arc" shape or are arranged in an inclined manner, so that the strength and rigidity of each structural plate can be effectively improved, local stress concentration of the sheet metal is avoided, and cracking phenomenon is prevented. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0018] Figure 1 Assembling schematic view of the side skirt plate, the longitudinal beam and the connecting structure of the passenger car;
[0019] Figure 2 Assembling schematic view of the side skirt plate, the longitudinal beam and the connecting structure of the passenger car; Figure 1 ;
[0020] Figure 3 Assembling schematic view of the side skirt plate, the longitudinal beam and the connecting structure of the passenger car; Figure 2 ;
[0021] Figure 4 Overall exploded view of the embodiment of the present application;
[0022] Figure 5 Structure schematic view of the connecting structure of the embodiment of the present application;
[0023] Figure 6 Cross-sectional view of Figure 5 .
[0024] The following is the explanation of the reference signs:
[0025] 1, front arc connecting plate; 11 / 21, bottom turning part; 12 / 22, side turning part; 13 / 23, transition edge; 14 / 24, weight reduction groove; 2, rear arc connecting plate; 3, transition connecting plate; 31, first inner turning part; 32, second inner turning part; 33, covering part; 34, inner arc edge; A, passenger car floor; B, side skirt plate; C, longitudinal beam. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as excluding other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.
[0027] In the claims, the descriptions and the above drawings of the present application, unless otherwise explicitly limited, the terms such as "first", "second" or "third" are used only to distinguish different objects, and are not used to describe a specific order.
[0028] In the claims, the descriptions and the above drawings of the present application, unless otherwise explicitly limited, for the terms of orientation, such as "center", "transverse", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "back", "left", "right", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation and positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present application.
[0029] In the claims, the descriptions and the above drawings of the present application, unless otherwise explicitly limited, such as the terms "fixedly connected" or "fixedly connected", should be understood broadly, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.
[0030] In the claims, the descriptions and the above drawings of the present application, such as the terms "include", "have" and their variants, are intended to "include but not limited to".
[0031] Please refer to Figures 1 to 6 .
[0032] The embodiment provides a connecting structure for a new type of bus side skirt plate B and longitudinal beam C, which can solve the compatibility penetration problem of the thin plate of the light bus and the longitudinal beam C of the frame, ensure the connection between the lower vehicle body side skirt plate B and the longitudinal beam C of the frame, and meet good structural strength and fatigue durability performance; see Figure 1, the existing passenger car side skirt plate B, longitudinal beam C and "U" type integral connection structure are installed and connected, this integral structure is more efficient in installation, but the force transmission path of this U-shaped special-shaped connecting member is unreasonable, often in the durability test, the stress is too concentrated to be effectively released, often appears welding point crack even cracking problem, and cannot be replaced locally, only the whole can be replaced, greatly increases the test cycle and rectification cost. In the utility model, referring to Figures 2 to 6 , mainly includes the front arc connecting plate 1 and rear arc connecting plate 2 between the side skirt plate B and longitudinal beam C, transition connecting plate 3, wherein,
[0033] The front arc connecting plate 1 and rear arc connecting plate 2 are formed by stamping, both are trapezoidal plate and are vertically set and placed in parallel, and the bottom edges of both are bent to form bottom turn-over portions 11 / 21 welded with the passenger car floor A, and are welded on the passenger car floor A by the bottom turn-over portions 11 / 21 inclined or vertically set; the front arc connecting plate 1 and rear arc connecting plate 2 respectively include two side edges of different lengths, and the two side edges are respectively bent to form side turn-over portions 12 / 22, one side turn-over portion 12 / 22 is used for welding with the longitudinal beam C; the other side turn-over portion 12 / 22 is used for welding with the side skirt plate B, and the length thereof is greater than that of the side turn-over portion 12 / 22 used for welding with the longitudinal beam C; in the embodiment, the front arc connecting plate 1 and rear arc connecting plate 2 are welded to the longer side edge side turn-over portion 12 / 22 of the side skirt plate B, and the side edge side turn-over portion 12 / 22 welded with the longitudinal beam C of the frame is shorter, so that the force generated by the frame longitudinal beam C to the side skirt plate B forms a small local to large range path, and the stress is diffused and not too concentrated; and the bottom edges of both are bent to form the bottom turn-over portions 11 / 21 welded with the passenger car floor A, both are supported in parallel between the side skirt plate B and longitudinal beam C, keep the distance between the side skirt plate B and longitudinal beam C, prevent the direct contact between the side skirt plate B and longitudinal beam C.
[0034] The transition connecting plate 3 is trapezoidal plate, which is located between the front arc connecting plate 1 and rear arc connecting plate 2, and is arranged in parallel relative to the passenger car floor A, so that the front arc connecting plate 1, rear arc connecting plate 2 and transition connecting plate 3 are arranged vertically; the transition connecting plate 3 is welded and fixed with the front arc connecting plate 1 and rear arc connecting plate 2, and part thereof is covered on the top position of the longitudinal beam C.
[0035] Referring to Figure 4 And Figure 5 ,
[0036] In the embodiment, the transition connecting plate 3 includes two side wings with different side lengths and arranged oppositely, one side wing integrally extends to form a first inward turning part 31, and the other side wing partially extends to form a second inward turning part 32, the first inward turning part 31 has the same length as the second inward turning part 32, and the two are parallel to each other, and the transition connecting plate 3 is welded and fixed with the front arc connecting plate 1 and the rear arc connecting plate 2 through the first inward turning part 31 and the second inward turning part 32 respectively. The transition connecting plate 3 further includes a covering part 33 between the two side wings, the covering part 33 is mainly located on the side of the first inward turning part 31 and the second inward turning part 32, and one end of the covering part 33 is close to the longitudinal beam C, when the transition connecting plate 3 is welded and fixed with the front arc connecting plate 1 and the rear arc connecting plate 2 respectively, the covering part 33 is also tightly arranged on the top wall of the longitudinal beam C to form a surface contact, so that the displacement of the longitudinal beam C of the vehicle frame perpendicular to the horizontal direction can be prevented, the structural strength can be ensured, and the inclination and shaking of the front arc connecting plate 1 and the rear arc connecting plate 2 can be prevented.
[0037] In the embodiment, the side wing of the longer end of the transition connecting plate 3 is welded and fixed with the front arc connecting plate 1, and the side wing of the shorter end is welded and fixed with the rear arc connecting plate 2, but the actual installation process can also be reversed.
[0038] In the embodiment, referring to Figure 3 , the covering part 33 is a plate-shaped body integrally extended to one side of the main body of the transition connecting plate 3 towards the longitudinal beam C, and the length of the extended plate surface at least covers one half of the width of the upper end surface of the longitudinal beam C, so that the connection effect and strength are better.
[0039] In the embodiment, the transition connecting plate 3 further has an inner arc edge 34 between the two side wings, and the opening of the inner arc edge 34 faces the side skirt B. The front arc connecting plate 1 and the rear arc connecting plate 2 respectively have a transition edge 13 / 23 between the two side turning parts 12 / 22 and corresponding to the bottom turning part 11 / 21. The inner arc edge 34 between the two side wings of the transition plate is in a semicircular arc shape, and the transition edge 13 / 23 of the front arc connecting plate 1 and the rear arc connecting plate 2 is in an "inner concave arc" shape or is arranged obliquely, which can effectively improve the strength and rigidity of each structural plate, avoid local stress concentration of the sheet metal, prevent cracking, reduce the internal structure space of the internal vehicle body, realize space avoidance, and provide more installation space for other structural members.
[0040] In the embodiment, the front arc connecting plate 1 and the rear arc connecting plate 2 are both concavely formed with a weight reduction groove 14 / 24.
[0041] In the embodiment, a plurality of ribs are arranged on the side turning part 12 / 22 at intervals, and each rib extends and is arranged along the side length direction of the side turning part 12 / 22, so as to ensure the welding strength and improve the stability of the overall structure.
[0042] The working principle and use process of the utility model are as follows:
[0043] The front-arc connecting plate 1 and the rear-arc connecting plate 2 and the transition connecting plate 3 are formed into a ring-shaped special-shaped structure through split assembly welding, and are welded and fixed with the bus floor A to form an integral connection.
[0044] In actual installation, the front-arc connecting plate 1 and the rear-arc connecting plate 2 are arranged between the side skirt plate B and the longitudinal beam C, and are arranged in parallel and vertically on the bus floor A, wherein the side turning part 12 / 22 at the left end abuts against the side skirt plate B, the side turning part 12 / 22 at the right end abuts against the longitudinal beam C, and the bottom turning part 11 / 21 at the lower end is supported on the upper side of the bus floor A, and finally, they are welded and fixed; the transition connecting plate 3 is arranged between the side skirt plate B and the longitudinal beam C and between the front-arc connecting plate 1 and the rear-arc connecting plate 2, and the transition connecting plate 3 is parallel to the bus floor A, the first inner turning part 31 of the left side wing of the transition connecting plate 3 is welded with the front-arc connecting plate 1, the second inner turning part 32 of the right side wing is welded with the rear-arc connecting plate 2, and the covering part 33 on the side is tightly attached to the upper end surface of the longitudinal beam C. The utility model can solve the problem of compatibility penetration of the thin plate member of the light bus and the longitudinal beam C of the frame, ensure the connection between the side skirt plate B of the lower bus body and the longitudinal beam C of the frame, and meet the good structural strength and fatigue durability performance. The technical scheme of the utility model replaces the existing U-shaped structural member, rationally arranges the structure position and structure shape of the three sheet metal structures of the front-arc connecting plate 1, the rear-arc connecting plate 2 and the transition connecting plate 3 in space, forms the ring-shaped special-shaped member through split assembly of the three, can not only realize the ring connection of the longitudinal beam C and the side skirt plate B, meet the good structural rigidity organization and the force transmission path setting, can effectively disperse and release the stress, avoid the quality problems such as cracking and cracking of the welding points of the longitudinal beam C connecting member, effectively improve the compatibility of the thin plate member of the light bus and the longitudinal beam C of the frame, strengthen the overall structural strength, and in the later period, if there is a repair work, one single piece can be replaced locally, and the cost is reduced.
[0045] The description of the above specification and examples is used to explain the protection scope of the utility model, but does not constitute the limitation on the protection scope of the utility model. Through the inspiration of the utility model or the above examples, the ordinary skilled in the art combines the common knowledge, the ordinary technical knowledge in the art and / or the prior art, and obtains the modification, equivalent replacement or other improvement of the utility model examples or one part of the technical features through logical analysis, reasoning or limited test, which should be included in the protection scope of the utility model.
Claims
1. A connecting structure for a new type of side skirt and longitudinal beam of a passenger car, characterized in that: The front and rear arc connecting plates are parallel and arranged vertically, and the bottom edges thereof are bent to form bottom turning portions welded with the floor of the passenger car; the front and rear arc connecting plates respectively include two side edges with different lengths, and the two side edges are respectively bent to form side turning portions, one of which is welded with the longitudinal beam, and the other of which is welded with the side skirt plate and has a length greater than that of the side turning portion welded with the longitudinal beam; The transition connecting plate is parallel to the floor of the passenger car and is arranged between the front and rear arc connecting plates; the transition connecting plate is welded with the front and rear arc connecting plates, and part thereof covers the top of the longitudinal beam. The transition connecting plate includes two side wings with different lengths and arranged oppositely, one of which is integrally extended to form a first inner turning portion, and the other of which is partially extended to form a second inner turning portion; the lengths of the first and second inner turning portions are equal, and the transition connecting plate is welded with the front and rear arc connecting plates through the first and second inner turning portions.
2. A connecting structure for a new type of side skirt and longitudinal beam of a passenger car according to claim 1, characterized in that: The transition connecting plate further includes a covering portion between the two side wings, one end of the covering portion is close to the longitudinal beam, and when the transition connecting plate is welded with the front and rear arc connecting plates, the covering portion is tightly arranged on the top wall of the longitudinal beam to form a surface contact.
3. A connection structure for a new type of side skirt and longitudinal beam of a passenger car according to claim 2, characterized in that: The transition connecting plate further has an inner arc edge between the two side wings, and the opening thereof faces the side skirt plate.
4. A connecting structure for a new-type passenger car side skirt panel and a longitudinal beam according to claim 3, characterized in that: The front and rear arc connecting plates respectively have transition edges between the two side turning portions and corresponding to the bottom turning portions.
5. A connection structure for a new type of side skirt and longitudinal beam of a bus, according to claim 1, characterized in that: The transition edges are arranged in an "inner concave arc" shape or are inclined.
6. A connection structure for a new type of side skirt and longitudinal beam of a passenger car according to claim 5, characterized in that: The front and rear arc connecting plates are welded on the floor of the passenger car in an inclined or vertical manner through the bottom turning portions.
7. A connecting structure for a skirt panel and a longitudinal beam of a new-type passenger car according to any one of claims 1 to 6, characterized in that: The front and rear arc connecting plates and the transition connecting plate all have a trapezoidal structure.
8. A connecting structure for a skirt panel and a longitudinal beam of a new-type passenger car according to any one of claims 1 to 6, characterized in that: The front and rear arc connecting plates are concavely formed with weight-reducing grooves.
9. A connection structure for a new type of side skirt and longitudinal beam of a bus, according to claim 1, characterized in that: The side turning portions are respectively provided with a plurality of convex ribs arranged along the length direction of the side turning portions.
10. A connection structure for a new type of side skirt and longitudinal beam of a bus, according to claim 1, characterized in that: