Roof structure and rail vehicle

Abstract

This utility model provides a roof structure and a rail vehicle. The roof structure includes a dome plate profile, roof side beam profiles, and air conditioner frame profiles. Adjacent profiles are fixedly connected to form the roof structure. The air conditioner frame profiles form an air conditioning well structure for housing air conditioners, including longitudinal and transverse air conditioner frame profiles. The wall thickness of the longitudinal and transverse air conditioner frame profiles at the connection points with the dome plate profile and at the connection points with the air conditioner is greater than the wall thickness of the dome plate profile. By changing the profile thickness of the side structure of the roof air conditioner frame, this utility model improves the rigidity of the vehicle body, which is weakened due to numerous door and window openings, thus meeting the static strength requirements of the vehicle body. This utility model also features a simple structure, low cost, and convenient installation.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicle body technology, and in particular to the roof structure of aluminum alloy car bodies. Background Technology

[0002] The standard urban rail vehicle adopts a main structure made of aluminum alloy large-section extruded profiles and plates. In order to meet the line transportation standards, the initial design requires that the vehicle body structure has sufficient strength to withstand various loads during vehicle operation, and can meet the needs of vehicle disassembly, assembly, maintenance, hoisting and rescue operations.

[0003] The urban rail transit system operates at speeds of 160-200 km / h. For safety and reliability, the car body structure must possess high strength and good crashworthiness. For passenger comfort, the car body structure must have excellent airtightness to ensure overall vehicle airtightness. For corrosion resistance, the car body surface must be treated with anti-corrosion measures, and the car body structure system itself should have drainage channels to prevent water accumulation within the cavities. For energy conservation, new materials and structural optimization should be incorporated to achieve lightweighting of the car body. The roof structure, in particular, needs to possess good structural integrity, load-bearing capacity, and manufacturability.

[0004] Because standard urban vehicle models have many openings in the doors and windows, resulting in a weak body structure, traditional roof structures can no longer meet the strength requirements. Utility Model Content

[0005] The main purpose of this utility model is to overcome the problem of insufficient strength of the roof structure in the prior art, and to provide a roof structure that improves the structural strength of the roof by strengthening the strength of the air conditioning frame profile.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vehicle roof structure, comprising: a dome plate profile, a roof side beam profile, and an air conditioning frame profile, wherein adjacent profiles are fixedly connected to form a vehicle roof structure, characterized in that: the air conditioning frame profile forms an air conditioning well structure for placing an air conditioner, comprising an air conditioning frame longitudinal profile and an air conditioning frame transverse profile, wherein the wall thickness of the profile at the connection point with the dome plate profile and the wall thickness of the profile at the connection point with the air conditioner in the air conditioning frame longitudinal profile and the air conditioning frame transverse profile is greater than the wall thickness of the dome plate profile.

[0007] This utility model improves the rigidity of the vehicle body and meets the static strength requirements by changing the thickness of the profile of the side structure of the roof air conditioning frame, which is a weak structure due to the large number of openings in the car door and window.

[0008] Furthermore, the longitudinal profile of the air conditioning frame has an inner wall located on the inner side of the air conditioning frame and an inner extension edge for installing the air conditioner, a pressing part for pressing the air conditioning sealing strip, and an outer extension edge for overlapping the roof side beam profile, arranged sequentially from the inside to the outside at the top. The transverse profile of the air conditioning frame has an outwardly extending overlapping edge, a pressing part for pressing the air conditioning sealing strip, and an inner wall located on the inner side of the air conditioning frame. The wall thickness of the inner extension edge, outer extension edge, overlapping edge, pressing part, and inner wall of the air conditioning frame is greater than the wall thickness of the dome plate profile. In addition, a C-shaped groove for roof mounting is provided on the lower inner side of the longitudinal profile of the air conditioning frame, and the wall thickness of the C-shaped groove is greater than the wall thickness of the dome plate profile.

[0009] Furthermore, the lower inner end of the roof side beam profile is provided with an inwardly extending support edge, and the lower outer end of the longitudinal profile of the air conditioning frame overlaps on the support edge of the roof side beam profile and is fixed by welding. The thickness of the support edge is greater than the wall thickness of the dome plate profile.

[0010] In addition, this utility model also claims protection for a rail vehicle comprising an aluminum alloy car body, the aluminum alloy car body including a driver's cab, side walls, end walls, a chassis and skirts, characterized in that: the aluminum alloy car body further includes the aforementioned roof structure.

[0011] The beneficial effects of this utility model are as follows: Standard urban vehicle models have many openings in the doors and windows, and the roof structure requires large holes at one and two ends to accommodate the air conditioning unit. If the traditional air conditioning frame mounting structure is used, the rigidity of the entire vehicle structure will be significantly reduced, failing to meet the standard rigidity requirements. Therefore, this utility model uses an air conditioning mounting frame with a side profile thickness significantly greater than that of the roof perimeter structure, which significantly improves the rigidity of the vehicle body and meets the standard requirements. It also features a simple structure, low cost, and convenient installation. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0013] Figure 1 It is an exploded view of the rail vehicle.

[0014] Figure 2 This is a schematic diagram of the roof structure of this utility model.

[0015] Figure 3 This is a cross-sectional view (dome area) of the roof structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the air conditioning frame of the vehicle roof structure of this utility model.

[0017] Figure 5This is a cross-sectional view of the roof structure of this utility model (air conditioning frame area).

[0018] Figure 6 This is a longitudinal cross-sectional view of the roof structure of this utility model (air conditioning frame area).

[0019] Figure 7 This is a cross-sectional view of the roof structure of this utility model (air conditioning frame area, including air conditioning).

[0020] Explanation of reference numerals in the attached figures: 1. Dome panel profile; 2. Roof side beam profile; 3. Air conditioner frame profile; 31. Air conditioner frame longitudinal profile; 311. Inner extension edge; 312. Outer extension edge; 313. C-shaped groove; 32. Air conditioner frame transverse profile; 321. Overlap edge; 33. Press-fit part; 34. Air conditioner frame inner wall; 4. Roof structure; 5. Driver's cab; 6. Side wall; 7. End wall; 8. Underframe; 9. Skirt; 10. Air conditioner. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] like Figure 1 As shown in the figure, the roof structure of the rail vehicle involved in this embodiment is a schematic diagram of the vehicle body, which includes an aluminum alloy vehicle body. The aluminum alloy vehicle body includes a driver's cab 5, side walls 6, end walls 7, underframe 8, skirts 9 and roof structure 4.

[0023] like Figure 2 As shown, the roof structure 4 in this embodiment includes: a dome plate profile 1, a roof side beam profile 2, and an air conditioning frame profile 3. Adjacent profiles are fixedly connected to form the roof structure. All structures are made of aluminum alloy profiles, and all components are connected by welding. It can be analyzed that the large opening in the air conditioning section leads to greater stress in this area of ​​the roof, which is a major factor resulting in low vehicle body rigidity.

[0024] like Figure 3 As shown, the dome-shaped profile 1 is formed by overlapping and welding multiple arc-shaped profiles. Specifically, the dome-shaped profile 1 includes a central roof profile 11 and roof edge profiles 12 welded and fixed to both sides of the central roof profile 11. The roof edge profiles 12 overlap the roof side beams 2 and are fixed together by welding. All components are connected by welding. The wall thickness of the dome-shaped profile is 3mm, and the thickness of the stiffening plates is 2mm-2.5mm.

[0025] like Figure 4As shown, the air conditioner frame profile 3 forms an air conditioning well structure for housing the air conditioner. It is spliced ​​and welded together from two longitudinal air conditioner frame profiles 31 and two transverse air conditioner frame profiles 32, and has a rectangular structure when viewed from above. The transverse air conditioner frame profile 32 has the same shape as the dome plate profile 1 to ensure a consistent vehicle outline. As can be seen from the figure, this vehicle model uses an air conditioning well structure. The large air conditioning structure results in a large air conditioning well opening, which is the main reason for the low body rigidity. In this embodiment, the wall thickness of the profiles at the connection points with the dome plate profile 1 and the air conditioner connection points of the longitudinal air conditioner frame profile 31 and the transverse air conditioner frame profile 32 is significantly greater than the wall thickness of the dome plate profile 1. This embodiment significantly improves the overall body rigidity by increasing the thickness of the air conditioner frame profile.

[0026] like Figure 5 , Figure 6 As shown, in this embodiment, the longitudinal profile 31 and the transverse profile 32 of the air conditioner frame are aluminum alloy extruded profiles with a hollow structure. Since the longitudinal profile 31 of the air conditioner frame is larger in size, it is also provided with internal stiffeners, which are also extruded together.

[0027] like Figure 5 , Figure 7 As shown, in this embodiment, the longitudinal profile 31 of the air conditioning frame has an inner wall 34 located on the inner side of the air conditioning frame and an inner extension edge 311 for installing the air conditioner, a pressing part 33 for pressing the air conditioner sealing strip, and an outer extension edge 312 for overlapping the roof side beam profile 2, arranged sequentially from the inside to the outside on the upper part. A C-shaped groove 313 for roof mounting is provided on the lower inner side of the longitudinal profile 31 of the air conditioning frame. An overlapping interface 11 is provided on the upper inner side of the roof side beam profile 2, and the outer extension edge 312 of the longitudinal profile 31 of the air conditioning frame overlaps the overlapping interface 11 of the roof side beam profile 2 and is welded and fixed. An inwardly extending support edge 21 is provided on the lower inner side of the roof side beam profile 2, and the lower outer side of the longitudinal profile 31 of the air conditioning frame overlaps the support edge 21 of the roof side beam profile 2 and is fixed by welding. The inner extension edge 311, outer extension edge 312, overlapping edge 321, pressing part 33, inner wall of air conditioning frame 34, C-shaped groove 313, and support edge 21 have all been thickened. This effectively increases the rigidity of the vehicle body and meets the standard requirements.

[0028] like Figure 6 As shown, the transverse profile 32 of the air conditioning frame has an outwardly extending overlapping edge 321 for overlapping welding to the roof side beam profile 2, a pressing part 33 for pressing the air conditioning sealing strip, and an inner wall 34 of the air conditioning frame located on the inner side.

[0029] In this embodiment, the wall thickness of the inner extension edge 311, outer extension edge 312, overlapping edge 321, pressing part 33, inner wall 34 of the air conditioner frame, and C-groove 313 is 13.5mm, and the wall thickness of the supporting edge 21 is 10mm. The wall thickness of the profiles in the longitudinal profile (31) and transverse profile (32) of the air conditioner frame at the connection with the dome plate profile (1) and the wall thickness of the profiles at the connection with the air conditioner are 2-7 times the wall thickness of the dome plate profile 1.

[0030] The installation method of the air conditioner frame is as follows: Figure 7 As shown, the roof air conditioner 10 and the air conditioner frame 3 are connected by bolts. The thickened air conditioner frame profile not only effectively increases the overall rigidity of the vehicle body, but also ensures the installation strength of the roof air conditioner.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roof structure, comprising: The roof panel profile (1), the roof side beam profile (2), and the air conditioning frame profile (3) are fixedly connected to form a roof structure. The air conditioning frame profile (3) forms an air conditioning well structure for placing an air conditioner, including an air conditioning frame longitudinal profile (31) and an air conditioning frame transverse profile (32). The wall thickness of the profile at the connection between the air conditioning frame longitudinal profile (31) and the air conditioning frame transverse profile (32) and the profile at the connection between the air conditioning frame longitudinal profile (31) and the air conditioning frame transverse profile (32) and the air conditioning frame is greater than the wall thickness of the roof panel profile (1).

2. The roof structure as described in claim 1, characterized in that: The longitudinal profile (31) and transverse profile (32) of the air conditioner frame are aluminum alloy extruded profiles with a hollow structure.

3. The roof structure as described in claim 1, characterized in that: The wall thickness of the profiles in the longitudinal profile (31) and transverse profile (32) of the air conditioner frame that connect with the dome plate profile (1) and the profiles that connect with the air conditioner are 2-7 times the wall thickness of the dome plate profile (1).

4. The roof structure as described in claim 2, characterized in that: The longitudinal profile (31) of the air conditioning frame has an inner wall (34) of the air conditioning frame located on the inside and an inner extension edge (311) for installing the air conditioner, a pressing part (33) for pressing the air conditioner sealing strip and an outer extension edge (312) for overlapping the roof side beam profile (2) arranged sequentially from the inside to the outside on the upper part. The transverse profile (32) of the air conditioning frame has an outwardly extending overlapping edge (321), a pressing part (33) for pressing the air conditioner sealing strip and an inner wall (34) of the air conditioning frame located on the inside. The wall thickness of the inner extension edge (311), the outer extension edge (312), the overlapping edge (321), the pressing part (33) and the inner wall (34) of the air conditioning frame is greater than the wall thickness of the dome plate profile (1).

5. The roof structure as described in claim 4, characterized in that: The lower inner side of the longitudinal profile (31) of the air conditioning frame is provided with a C-shaped groove (313) for the interior of the roof, and the wall thickness of the C-shaped groove is greater than the wall thickness of the dome plate profile (1).

6. The roof structure as described in claim 5, characterized in that: The wall thickness of the dome plate profile (1) is 2-3mm, and the wall thickness of the inner extension edge (311), outer extension edge (312), C-groove (313), overlapping edge (321), pressing part (33) and inner wall of air conditioner frame (34) is 6-14mm.

7. The roof structure as described in claim 3, characterized in that: An overlapping interface is provided on the upper inner side of the roof side beam profile (2), and the outer extension edge (312) of the longitudinal profile (31) of the air conditioning frame overlaps with the overlapping interface of the roof side beam profile (2) and is welded and fixed.

8. The roof structure as described in claim 3, characterized in that: The lower inner side of the roof side beam profile (2) is provided with an inwardly extending support edge (21). The lower outer side of the longitudinal profile (31) of the air conditioning frame overlaps the support edge (21) of the roof side beam profile (2) and is fixed by welding. The thickness of the support edge (21) is greater than the wall thickness of the dome plate profile (1).

9. The roof structure as described in claim 1, characterized in that: The dome profile (1) includes a central roof profile (11) and a roof edge profile (12) welded and fixed to both sides of the central roof profile (11). The roof edge beam profile (2) overlaps and is welded and fixed to the roof edge profile (12).

10. A rail vehicle comprising an aluminum alloy car body, the aluminum alloy car body including a driver's cab (5), side walls (6), end walls (7), a chassis (8), and skirts (9), characterized in that: The aluminum alloy vehicle body also includes the roof structure (4) as described in any one of claims 1-9.

Images