Passenger car roof beam lightweight structure

Abstract

The utility model discloses a passenger car roof beam lightweight structure, and belongs to the technical field of steel frame structures. The top cover side longitudinal beams, the top cover cross beams and the top cover middle cross beams are hollow, end covers are welded to the two ends of each top cover side longitudinal beam, the two ends of each top cover cross beam and the two ends of each top cover middle cross beam, and the top cover side longitudinal beams, the top cover cross beams and the top cover middle cross beams are arranged at intervals and connected through top cover fixing assembly welding pieces. According to the top cover of the passenger car, the number and the specification of the top cover cross beams are reduced under the condition that the strength is met, the purpose of light weight is achieved, and meanwhile due to the fact that the top cover side longitudinal beams, the top cover cross beams and the top cover middle cross beams are hollow, the mass of the top cover of the passenger car is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of passenger car roof beam light-weight structure, belong to steel frame structure technical field. BACKGROUND

[0002] At present, with the development of automobile industry, school bus is more and more popular in China's cities and towns, and becomes the main means of transport for many students from kindergarten to middle school, and the future market is very broad.

[0003] However, many school buses have too large body frame mass, low frame strength, and the school bus is equipped with a television air conditioning system on the roof frame, so the mass of the roof frame of the school bus is also large.

[0004] Therefore, a new scheme is needed to solve this problem. INVENTION CONTENTS

[0005] The utility model solves the technical problems that the mass of the school bus body frame is too large, the frame strength is low, and the school bus is equipped with a television air conditioning system on the roof frame, so the mass of the roof frame of the school bus is also large.

[0006] The technical problems solved by the utility model are solved by the following technical scheme: a passenger car roof beam light-weight structure includes a plurality of roof edge longitudinal beams, roof transverse beams and roof middle transverse beams, wherein the roof edge longitudinal beams, roof transverse beams and roof middle transverse beams are spaced apart and connected by roof fixing group welding pieces.

[0007] By adopting the above technical scheme, the strength of the air conditioning system part of the trolley is ensured by installing a plurality of roof transverse beams, so that it does not meet the strength requirement due to the change of the layout of other parts. At this time, because the strength of the air conditioning system part, which is the largest mass part in the roof frame of the passenger car, is guaranteed, the roof transverse beam span of the remaining parts can be appropriately increased to reduce the number and specifications of the roof transverse beams under the condition of meeting the strength, and the light-weight purpose is achieved. At the same time, the roof edge longitudinal beams, roof transverse beams and roof middle transverse beams are hollow, so as to further reduce the mass of the roof of the passenger car.

[0008] The utility model is further provided with a plurality of reinforcing members inside the roof edge longitudinal beams and roof middle transverse beams, and the reinforcing members include two pressure plates abutting on the hollow inner walls of the roof edge longitudinal beams and roof middle transverse beams, and a rotating shaft is arranged between the two pressure plates.

[0009] By adopting the technical scheme, the reinforcing member is arranged inside the hollow roof side longitudinal beam and the roof middle transverse beam, and a pressure bearing plate is arranged inside the roof side longitudinal beam and the roof middle transverse beam, so that the roof side longitudinal beam and the roof middle transverse beam have excellent compression resistance, bending resistance and fracture resistance, and the roof side longitudinal beam and the roof middle transverse beam are not easy to bend and break under pressure, and the strength of the roof side longitudinal beam and the roof middle transverse beam is ensured.

[0010] The utility model further sets up: two pressure bearing plates are all round, and the pivot is rotationally connected between two pressure bearing plates.

[0011] By adopting the technical scheme, the reinforcing member is arranged inside the hollow roof side longitudinal beam and the roof middle transverse beam, and a pressure bearing plate is arranged inside the roof side longitudinal beam and the roof middle transverse beam, so that the roof side longitudinal beam and the roof middle transverse beam have excellent compression resistance, bending resistance and fracture resistance, and the strength of the roof side longitudinal beam and the roof middle transverse beam is ensured.

[0012] The utility model further sets up: two pressure bearing plates are all round, and the pivot is rotationally connected between two pressure bearing plates.

[0013] By adopting the technical scheme, the reinforcing member is arranged inside the hollow roof side longitudinal beam and the roof middle transverse beam, and a pressure bearing plate is arranged inside the roof side longitudinal beam and the roof middle transverse beam, so that the roof side longitudinal beam and the roof middle transverse beam have excellent compression resistance, bending resistance and fracture resistance, and the strength of the roof side longitudinal beam and the roof middle transverse beam is ensured.

[0014] The utility model further sets up: two pressure bearing plates are all round, and the pivot is rotationally connected between two pressure bearing plates.

[0015] By adopting the technical scheme, the reinforcing member is arranged inside the hollow roof side longitudinal beam and the roof middle transverse beam, and a pressure bearing plate is arranged inside the roof side longitudinal beam and the roof middle transverse beam, so that the roof side longitudinal beam and the roof middle transverse beam have excellent compression resistance, bending resistance and fracture resistance, and the strength of the roof side longitudinal beam and the roof middle transverse beam is ensured.

[0016] The utility model further sets up: two pressure bearing plates are all round, and the pivot is rotationally connected between two pressure bearing plates.

[0017] By adopting the technical scheme, the reinforcing member is arranged inside the hollow roof side longitudinal beam and the roof middle transverse beam, and a pressure bearing plate is arranged inside the roof side longitudinal beam and the roof middle transverse beam, so that the roof side longitudinal beam and the roof middle transverse beam have excellent compression resistance, bending resistance and fracture resistance, and the strength of the roof side longitudinal beam and the roof middle transverse beam is ensured.

[0018] The utility model discloses a beneficial effect is: through the installation of several roof cross beams to ensure the strength of trolley air conditioning system part, makes it not to meet the strength demand because of the change of other parts layout, at this moment, because the air conditioning system part strength of the largest part in the bus roof frame is guaranteed, so the roof cross beam span of the rest part can be appropriately enlarged, reduces the quantity and the specification of roof cross beam under the condition of satisfying the strength, accomplifies the lightweight purpose, simultaneously because roof side longitudinal beam, roof cross beam, roof middle cross beam are all hollow, thereby further reduce the quality of bus roof. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structural diagram of the utility model;

[0020] Figure 2 It is the structural diagram of roof cross beam in the utility model;

[0021] Figure 3 It is the structural diagram of roof middle cross beam in the utility model;

[0022] Figure 4 It is the structural diagram of roof side longitudinal beam and reinforcing part in the utility model;

[0023] Figure 5 It is the structural diagram of reinforcing part in the utility model;

[0024] Figure 6 It is the half cut drawing of reinforcing part in the utility model.

[0025] In the drawing: 1, roof side longitudinal beam;2, roof cross beam;3, roof middle cross beam;4, roof fixed group welding part;5, end cover;6, reinforcing part;7, pressure plate;8, pivot;9, pressure bar;10, elastic part;11, arc block;12, abutting block;13, inclined strut. DETAILED DESCRIPTION

[0026] In order to be easy to understand the technical means, creative characteristics, achieve the purpose and effect of the utility model, the utility model is further described below in combination with specific drawing.

[0027] As Figures 1 to 3 Shown, a bus roof cross beam lightweight structure, including several all hollow and both ends welding has end cover 5's roof side longitudinal beam 1, roof cross beam 2, roof middle cross beam 3, wherein, roof side longitudinal beam 1, roof cross beam 2, roof middle cross beam 3 interval arrangement and roof side longitudinal beam 1, roof cross beam 2, roof middle cross beam 3 between through roof fixed group welding part 4 is connected.

[0028] The strength of the air conditioning system part of the trolley is ensured by adding several roof cross beams 2, so that it will not be inconsistent with the strength requirement due to the change of the layout of other parts. At this time, because the strength of the air conditioning system part, which is the largest part in the roof framework of the passenger car, is ensured, the pitch of the roof cross beams 2 of the remaining parts can be appropriately increased, the number and specifications of the roof cross beams 2 are reduced under the condition of meeting the strength, the purpose of lightening is achieved, and the mass of the roof of the passenger car is further reduced due to the hollow shape of the roof side longitudinal beam 1, the roof cross beam 2 and the roof middle cross beam 3.

[0029] In addition, as shown in Figure 4 and Figure 5 , the roof side longitudinal beam 1 and the roof middle cross beam 3 are internally provided with several reinforcing members 6, the reinforcing member 6 includes two pressure receiving plates 7 abutting on the hollow inner walls of the roof side longitudinal beam 1 and the roof middle cross beam 3, and a rotating shaft 8 is arranged between the two pressure receiving plates 7. By arranging the reinforcing member 6, i.e. the pressure receiving plate 7, in the hollow roof side longitudinal beam 1 and the roof middle cross beam 3, the roof side longitudinal beam 1 and the roof middle cross beam 3 are provided with excellent compression resistance, bending resistance and fracture resistance, so that the roof side longitudinal beam 1 and the roof middle cross beam 3 are not easy to bend and break when bearing pressure, and the strength of the roof side longitudinal beam 1 and the roof middle cross beam 3 is ensured.

[0030] As shown in Figure 5 , the two pressure receiving plates 7 are circular, and the rotating shaft 8 is rotatably connected between the two pressure receiving plates 7. The pressure receiving plate 7 can rotate relative to the rotating shaft 8, so that the reinforcing member 6 can roll into the interior of the roof side longitudinal beam 1 and the roof middle cross beam 3.

[0031] As shown in Figure 6 , the rotating shaft 8 is crosswise rotatably provided with two pressure rods 9, and the connection between the pressure rod 9 and the rotating shaft 8 is provided with an elastic member 10 on both sides for limiting the rotation of the pressure rod 9. In this embodiment, the elastic member 10 is a torsion spring, which is sleeved on the rotating shaft 8 and has both ends fixed on the inner walls of the two pressure rods 9.

[0032] By arranging the torsion spring, the two pressure rods 9 have an outward expanding elastic force, so that the staff can rotate the two pressure rods 9 to adapt to the roof side longitudinal beam 1 and the roof middle cross beam 3 of different caliber heights, thereby improving the application range of the reinforcing member 6. The two pressure rods 9 abut on the inner walls of the roof side longitudinal beam 1 and the roof middle cross beam 3 and form pressure resistance points, which further improve the bending resistance of the roof side longitudinal beam 1 and the roof middle cross beam 3.

[0033] It should be noted that when installing the reinforcing member 6, the top cover side longitudinal beam 1 and the top cover middle cross beam 3 are both closed at one end by the end cover 5 and have an opening at the other end, the reinforcing member 6 enters the inside of the top cover side longitudinal beam 1 and the top cover middle cross beam 3 through the opening until contacting the end cover 5, then the next reinforcing member 6 is put in until abutting against the previous reinforcing member 6, and so on, when installing the last reinforcing member 6, one side of the reinforcing member 6 can be ground according to the length of the actual top cover side longitudinal beam 1 and the top cover middle cross beam 3 to adapt to the length of the top cover side longitudinal beam 1 and the top cover middle cross beam 3, and finally the end cover 5 is welded to close the top cover side longitudinal beam 1 and the top cover middle cross beam 3.

[0034] When both sides of the end cover 5 are closed, the reinforcing members 6 inside the top cover side longitudinal beam 1 and the top cover middle cross beam 3 are all in abutting against each other, and both sides are limited by the end cover 5, so that the abutting against rod 9 rotatingly arranged in the reinforcing member 6 cannot rotate, and plays a more outstanding pressure bearing role.

[0035] As shown in Figure 6 , the abutting against rod 9 is provided with an arc block 11 towards both ends of the inner wall of the top cover side longitudinal beam 1 and the top cover middle cross beam 3, and is provided with an abutting block 12 in a circular arc shape away from the pressure bearing plate 7.

[0036] The arrangement of the arc block 11 can effectively reduce the friction between the abutting against rod 9 and the inner wall of the top cover side longitudinal beam 1 and the top cover middle cross beam 3, so that the reinforcing member 6 can be more smoothly installed, and the arrangement of the abutting block 12 can make the abutting between two adjacent abutting against rods 9 more stable.

[0037] As shown in Figure 1 , a plurality of hollow inclined braces 13 are welded between adjacent top cover side longitudinal beams 1, and the adjacent top cover side longitudinal beams 1 are connected through the inclined braces 13, so that the bending and pressure resistance of the passenger car roof is more outstanding.

[0038] It should be noted that in the present application, the top cover side longitudinal beam 1, the top cover cross beam 2, the top cover middle cross beam 3, the top cover fixed assembly 4 and the inclined brace 13 are made of one or a combination of aluminum alloy, magnesium alloy and carbon fiber, so that the top cover side longitudinal beam 1, the top cover cross beam 2, the top cover middle cross beam 3, the top cover fixed assembly 4 and the inclined brace 13 have high strength and small mass.

[0039] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A lightweight structure for a bus roof crossbeam, characterized in that: It includes several hollow top cover side longitudinal beams (1), top cover cross beams (2), and top cover middle cross beams (3), each with end caps (5) welded to both ends. The top cover side longitudinal beams (1) and top cover middle cross beams (3) are each provided with several reinforcing members (6). The reinforcing members (6) include two pressure plates (7), and a rotating shaft (8) is provided between the two pressure plates (7).

2. The lightweight structure of the bus roof beam according to claim 1, characterized in that: Both of the pressure plates (7) are circular, and the rotating shaft (8) is rotatably connected between the two pressure plates (7).

3. The lightweight structure of the bus roof beam according to claim 2, characterized in that: Two pressure rods (9) are arranged crosswise on the rotating shaft (8).

4. The lightweight structure of the bus roof beam according to claim 3, characterized in that: The two pressure rods (9) are rotatably mounted on the rotating shaft (8), and an elastic element (10) is provided at the connection between the pressure rod (9) and the rotating shaft (8) to limit the rotation of the pressure rod (9).

5. The lightweight structure of the bus roof beam according to claim 3, characterized in that: The pressure bar (9) has arc-shaped blocks (11) at both ends facing the inner wall of the top cover side longitudinal beam (1) and the top cover middle cross beam (3).

6. The lightweight structure of the bus roof crossbeam according to claim 3, characterized in that: Each of the pressure rods (9) has an arc-shaped abutment block (12) at the end away from the pressure plate (7).

7. The lightweight structure of the bus roof crossbeam according to claim 1, characterized in that: It also includes several diagonal braces (13), which are arranged between adjacent top cover side longitudinal beams (1).

Images