Processing method of railway vehicle roof structure
A processing method and technology for rail vehicles, which are applied in metal processing equipment, railway roofs, manufacturing tools, etc., can solve the problems of difficult control of welding quality, unfavorable lightweight design of car body and increase of driving speed, and difficulty in handling properly. Welding workload and deformation, improving lightweight design, and reducing arc welding workload
Active Publication Date: 2015-04-22
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology
[0003] When the air conditioner is installed on the roof, the load-bearing platform generally adopts a plate beam structure, that is, the roof frame is first lapped to carry the weight of the roof equipment such as the air conditioner, and then a whole flat roof plate and other platform components are added above the frame , resulting in a heavy roof, which is not conducive to optimizing the lightweight design of the car body and increasing the driving speed
[0004] In addition, because the vehicle adopts a steel body structure, the welding workload of the flat roof is relatively large when the air conditioner is installed, and it is easy to cause large deformation, and the welding quality is difficult to control
[0005] After the assembly welding is completed, the flatness of the roof surface will be significantly out of tolerance, so subsequent flame adjustment is required, which will not only take time and effort, but also directly reduce the strength of the roof base material
[0006] The flatness of the flat roof of the air conditioner is poor, and it will also form water storage on the flat roof of the air conditioner, which will affect the service life of the vehicle
[0007] Because in the existing technology, the flat roof of the air conditioner cannot be tested for water retention first, and the sealing performance of the steel structure of the car body after assembly and welding can only be detected by the follow-up process. Once the problem of water retention and leakage occurs, it is difficult to handle it properly
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Embodiment 1
[0049] Example 1, such as Figure 1 to Figure 8 As shown, the described rail vehicle roof structure mainly includes:
[0050] 2 air conditioner flat roofs 10 for installing car air conditioner,
[0051] The flat roof frame welded by the beam 1 and the flat roof plate 4, the air conditioner flat roof 10 has a concave basin-shaped structure relative to the flat roof frame;
[0052] Drainage pipes 3 for drainage are arranged on the longitudinal sides of the flat roof frame.
[0053] Wherein, the beam 1 has a hat-shaped cross-sectional structure, the planar part of the beam 1 and the flat top plate 4 are spot-welded to each other, and the hat-shaped flanges of two adjacent beams 1 are spot-welded to each other.
[0054] The drain pipe 3 has wing-shaped folds, and the wing-shaped folds of the drain pipe 3 are connected to the flat top plate 4 by spot welding.
[0055] Air-conditioning flat roof 10, the inner ring of the installation frame is connected by tailor welding at the co...
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The invention provides a railway vehicle roof structure and a processing method for the railway vehicle roof structure. According to the rail car roof structure, a vehicle roof is formed by welding air conditioner flat tops and a flat top framework, and the flat top framework is formed by welding cap-shaped beams and flat top plates. By using the railway vehicle roof structure and the processing method for the railway vehicle roof structure, the vehicle roof structure with reduced welding workload and deformation amount can be realized, and the smooth level of the vehicle roof surface can be improved. The vehicle roof structure comprises two air conditioner flat tops and the flat top framework, wherein the two air conditioner flat tops are used for installing a car-mounted air conditioner, the flat top framework is formed by welding the beams and the flat top plates, drain pipes which are used for draining water are respectively arranged at the two longitudinal sides of the flat top framework, and each of the air conditioner flat tops is provided with an inwards concave basin-shaped structure relative to the flat top framework. Under the premise that the flat top framework meets the rigidity and the mechanical strength, the lightening design is effectively realized, and the smooth level of the vehicle roof surface can be improved easily. Each of the air conditioner flat tops is provided with the inwards concave basin-shaped structure, so that a water testing experiment can be carried out on the structure easily, and a welding defect can be found ahead of time so as to carry out targeted improvements.
Description
technical field [0001] The invention aims at the improvement of the installation and drainage structure of the air conditioner on the roof of the rail vehicle, specifically adopts a modular flat roof structure, and belongs to the field of mechanical manufacturing. Background technique [0002] The rail vehicles currently in use are generally equipped with air-conditioning devices and rainwater and snowwater collection and discharge mechanisms on the roof, which can be summarized as a structural model of roof bearing platform + flat roof plate + drainage pipe. [0003] When the air conditioner is installed on the roof, the load-bearing platform generally adopts a plate beam structure, that is, the roof frame is first lapped to carry the weight of the roof equipment such as the air conditioner, and then a whole flat roof plate and other platform components are added above the frame , resulting in a heavy roof, which is not conducive to optimizing the lightweight design of the ...
Claims
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IPC IPC(8): B61D17/12B23K31/02
Inventor 王宝金丁叁叁马云双龚明程典阳周建乐
Owner CRRC QINGDAO SIFANG CO LTD