CN204687858U - A kind of roof pantograph mounting structure - Google Patents

Abstract

The utility model relates to a kind of roof pantograph mounting structure, comprise the groove part for installing pantograph being arranged on roof, in described groove part inside, a base is set, described base is fixedly connected with steel structure of car roof, the bottom of described pantograph is fixedly mounted on described base, between described base and the bottom of pantograph, also arrange one deck insulation board and panel.The utility model is not only beneficial to installation and maintenance, and can effectively absorb and reduce aerodynamic noise and the structureborne noise of pantograph generation.

Description

A roof pantograph installation structure

technical field

The utility model relates to a pantograph installed on the roof of a railway passenger car, in particular to a pantograph installation structure on the roof, and belongs to the technical field of rail vehicle manufacturing.

Background technique

As the speed of railway passenger cars continues to increase, the vehicle shape tends to be more graceful and streamlined to achieve better aerodynamic performance and minimize noise. There are generally two ways to install pantographs in existing railway passenger cars, one is to install directly on the top surface of the car body; the other is to process the pantograph area into a platform, and the pantograph is directly installed on the platform. All the installation methods produce a lot of noise inside and outside the car. In order to reduce the noise of existing railway passenger cars, shrouds are installed on the two sides of the pantograph on the roof to reduce aerodynamic noise, but this affects the appearance of the vehicle, or the pantograph area is sprayed with damping paste and pasted with sound-absorbing materials, but at the same time it will Increase the weight of the vehicle, inconvenient installation and not conducive to maintenance.

Utility model content

The main purpose of the utility model is to solve the above problems and deficiencies, and provide a roof pantograph installation structure that is convenient for installation and maintenance, and can effectively absorb and reduce the aerodynamic noise and structural noise generated by the pantograph.

In order to achieve the above object, the technical solution of the utility model is:

A vehicle roof pantograph installation structure, comprising a groove part arranged on the vehicle roof for installing a pantograph, a base is arranged inside the groove part, the base is fixedly connected with the vehicle body, and the pantograph The bottom of the pantograph is fixedly installed on the base, and a sound insulation board is arranged between the base and the bottom of the pantograph.

Further, the base is an H-shaped frame structure.

Further, a counterweight is arranged on the base, and the counterweight is fixed on the base by fasteners.

Further, the sound insulation board is composed of upper and lower layers of metal plates and a sound insulation material in the middle.

Further, a plurality of micro-hole plates are installed on the lower surface of the sound insulation board.

Further, a plurality of microporous plates are arranged parallel to each other in the vehicle length direction, and reinforcing ribs are fixed between every two adjacent microporous plates, and the reinforcing ribs are fixed on the sound insulation board.

Further, the section of the microporous plate is U-shaped, and both sides of the microporous plate have flanges fixedly connected with the sound insulation board.

Further, the shape of the sound insulation board matches the shape of the groove part and completely covers the groove part, and the sound insulation board is fixedly connected with the base and the vehicle body at the same time.

Further, a ring of bead is provided on the circumference of the sound insulation board to adjust the gap between the sound insulation board and the vehicle body of the groove part.

Further, the sound insulation board is fixedly connected with the vehicle body through the damping seat.

To sum up, the utility model provides a roof pantograph installation structure. The pantograph is completely installed inside the groove part of the roof, which can not only effectively reduce the impact of the airflow excitation of the pantograph system, but also effectively reduce the aerodynamic force. The generation of noise, and at the same time make the appearance of the vehicle more smooth and beautiful. In addition, the pantograph is fixed to the steel structure through a base, which is not only convenient for installation and maintenance, but also avoids the direct connection between the pantograph and the steel structure, and a layer of sound insulation board is set between the pantograph and the base, which can effectively reduce the Structural noise is transmitted to the interior of the car, and at the same time, it can better isolate air noise, and play a good role in absorbing and reducing aerodynamic noise and structural noise in the pantograph area of high-speed railway passenger cars.

Description of drawings

Fig. 1 is the structure diagram of utility model pantograph after being installed on the roof;

Fig. 2 is an exploded view of the installation structure of the present utility model;

Fig. 3 is a schematic diagram of the upper surface structure of the sound insulation board of the installation structure of the utility model;

Fig. 4 is a schematic diagram of the structure under the sound insulation board of the installation structure of the utility model;

Fig. 5 is a schematic cross-sectional structure diagram of the sound insulation board of the present invention.

As shown in Figures 1 to 5, the pantograph 1, the groove part 2, the end plate 3, the side plate 4, the top plate 5, the base 6, the insulator 7, the mounting seat 8, the longitudinal beam 9, the beam 10, and the counterweight 11. Studs 12, sound insulation boards 13, upper metal plates 14, lower metal plates 15, sound insulation materials 16, microporous plates 17, ribs 18, flanges 19, rivets 20, mounting openings 21, shock absorbing seats 22, Connecting plate 23, bolt 24, bolt 25, bead 26.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

As shown in Figure 1, the utility model provides a roof pantograph installation structure, including a groove part 2 for installing the pantograph 1 on the roof, the groove part 2 is on the top plate of the car body 5 is provided with a roughly arrow-shaped opening, and two front and rear end plates 3 and two side plates 4 are welded and fixed around the opening. The bottom of the groove part 2 is the roof steel structure of the car body, and the end plate 3 and the bottom edge of the side plate 4 is welded to the steel structure of the roof, and the end plate 3 at the front is a bending structure matching the arrow shape, wherein the top plate 5 of the roof, the end plate 3 of the groove part 2, and the side plate 4 And roof steel structure are used as part of the car body. The pantograph 1 is completely installed inside the groove part 2 of the roof. In the lowered state, the pantograph 1 is completely recessed into the roof contour line, and no parts protrude from the surface of the vehicle body, which not only achieves good aerodynamics of the vehicle performance, effectively reducing the impact of the pantograph system's airflow excitation, effectively reducing the generation of aerodynamic noise, and making the vehicle's appearance more smooth and beautiful.

As shown in Figure 1 and Figure 2, a base 6 is provided inside the groove part 2, and three mounting seats 8 are provided on the base 6 corresponding to the insulator 7 of the pantograph 1, and the bottom of the insulator 7 of the pantograph 1 is passed through a bolt It is fixedly installed on the mounting seat 8 of the base 6, and the base 6 is fixed on the roof steel structure by bolts. The pantograph 1 is fixedly connected to the roof steel structure through the base 6, and the base 6 plays a transitional role, which not only facilitates installation and maintenance, but also avoids direct connection between the pantograph 1 and the roof steel structure of the vehicle body, reducing structural noise , and reduce the transmission of noise outside the vehicle to the inside of the vehicle, and play a good role in absorbing and reducing noise of the structure noise in the pantograph area.

In this embodiment, the base 6 preferably adopts an H-shaped frame structure composed of two longitudinal beams 9 and two cross beams 10 welded, which can not only ensure its bearing capacity, but also reduce the overall weight of the base 6 to meet the requirements of light weight. The three mounting bases 8 are welded and fixed on the two beams 10 of the base 6, and a connection plate 23 is respectively welded at both ends of the two beams 10, and the four connection plates 23 are respectively fixed on the roof steel structure by bolts, and then The base 6 is fixedly connected with the roof steel structure of the car body.

As shown in FIG. 2 , one or more metal counterweights 11 are arranged on the base 6 , and the counterweights 11 are fixed on the base 6 through studs 12 . The weight of the "H"-shaped base 6 can be adjusted by changing the size of the counterweight 11, and with the assistance of the calculation software, an optimal counterweight can be obtained to minimize structural noise.

As shown in Figures 2 to 4, a layer of sound insulation board 13 is also provided between the base 6 and the bottom of the pantograph 1, the shape of the sound insulation board 13 matches the shape of the groove part 2, and completely covers the groove part 2. In order to facilitate the installation of the sound insulation board 13, the size of the sound insulation board 13 is slightly smaller than the size of the groove part 2. Therefore, in this embodiment, a ring of bead 26 is provided around the circumference of the sound insulation board 13, and the bead 26 is on the sound insulation board. 13 is installed on the circumference of the sound insulation board 13 by bolts after installation, in order to adjust the gap between the sound insulation board 13 and the car body of the groove part 2. The sound insulation board 13 not only plays a good role in damping vibration, but also can better isolate air noise and play a good role in absorbing and reducing aerodynamic noise in the pantograph area.

As shown in Figure 5, the sound insulation board 13 adopts a sandwich structure, which is composed of an upper metal plate 14, a lower metal plate 15 and a sound insulation material 16 in the middle. The sound insulation material 16 and the lower metal plate 15 are bonded and fixed, and the upper metal plate The plate 14 is pressed on the upper surface of the sound insulation material 16, and finally the upper metal plate 14, the lower metal plate 15 and the sound insulation material 16 in the middle are fastened together by a plurality of bolts to form a sandwich structure.

The middle part of the sound insulation board 13 (the area corresponding to the base 6) is directly fixed on the crossbeam 10 and the longitudinal beam 9 of the H-shaped base 6 by a plurality of bolts 24, and on the two sides of the sound insulation board 13, several vibration damping The seat 22 and the bolt 25 are fixedly connected with the roof steel structure of the vehicle body groove part 2 .

As shown in Figure 5, in order to enhance the connection strength between the sound insulation board 13 and the roof steel structure, a plurality of reinforcing ribs 18 are arranged on the lower surface of the sound insulation board 13, between the plurality of reinforcing ribs 18 in the direction of the vehicle length Arranged parallel to each other, the cross section of the reinforcing rib 18 is an inverted U shape, and its top edge is welded and fixed on the lower surface of the lower metal plate 15 of the sound insulation board 13, and the reinforcing rib 18 and the lower metal plate 15 are preferably welded and fixed in the form of spot welding , to reduce welding distortion. A plurality of damping seats 22 are arranged on each reinforcing rib 18 , and the shock absorbing seats 22 are fixedly connected with the reinforcing ribs 18 and the sound insulation board 13 through bolts 25 . Through the flexible connection of the vibration-damping seat 22, the direct transmission of noise to the vehicle body can be further reduced, so as to reduce vibration and noise.

In order to further improve its sound insulation effect, in the present embodiment, a plurality of microporous plates 17 with a certain height are installed on the lower surface of the lower metal plate 15 of the sound insulation board 13, and at least one is arranged between every two reinforcing ribs 18. Microporous plate 17, microporous plate 17 is arranged parallel to each other in the vehicle length direction like reinforcing rib 18. The microporous plate 17 is preferably made of an aluminum microporous plate, so as to reduce the overall weight of the sound insulation plate 13 and meet the requirement of light weight. As shown in FIGS. 4 and 5 , the section of the microporous plate 17 is U-shaped, and both sides of the microporous plate 17 have flanges 19 and are fixedly connected with the lower metal plate 15 of the sound insulation plate 13 by rivets 20 . .

After the sound insulation board 13 is installed, a certain gap is reserved between the roof steel structure of the groove part 2 of the car body, so as to avoid structures such as the microporous plate 17 and the reinforcing rib 18 on the lower surface of the sound insulation board 13, and can be used as a groove part at the same time 2 drainage channels.

As shown in Fig. 2 and Fig. 3, there are three installation openings 21 in the middle of the sound insulation board 13, the reinforcing ribs 18 and the microporous plate 17 avoid the positions of the installation openings 21, and the three installation seats 8 on the base 6 correspond from three Pass through the installation opening 21, and the bottom of the insulator 7 is fixedly installed on the installation base 8 by bolts.

As mentioned above, a similar technical solution can be derived in combination with the content of the solution given in the accompanying drawings. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model without departing from the content of the technical solution of the utility model still belong to the scope of the technical solution of the utility model.

Claims (10)

1. A vehicle roof pantograph installation structure, comprising a groove part arranged on the vehicle roof for installing a pantograph, characterized in that: a base is arranged inside the groove part, and the base is connected to the vehicle body Fixed connection, the bottom of the pantograph is fixedly installed on the base, and a layer of sound insulation board is set between the base and the bottom of the pantograph. 2. The roof pantograph installation structure according to claim 1, characterized in that: the base is an H-shaped frame structure. 3 . The roof pantograph installation structure according to claim 1 , wherein a counterweight is arranged on the base, and the counterweight is fixed on the base by fasteners. 4 . 4 . The roof pantograph installation structure according to claim 1 , wherein the sound insulation board is composed of upper and lower layers of metal plates and a sound insulation material in the middle. 5 . The roof pantograph installation structure according to claim 1 , wherein a plurality of micro-hole plates are installed on the lower surface of the sound insulation board. 6 . 6. A roof pantograph installation structure according to claim 5, characterized in that: a plurality of said micro-hole plates are arranged parallel to each other in the vehicle length direction, between every two adjacent micro-hole plates There are reinforcing ribs fixed between them, and the reinforcing ribs are fixed on the sound insulation board. 7. A roof pantograph installation structure according to claim 5, characterized in that: the section of the microporous plate is U-shaped, and the two sides of the microporous plate have flanges and the sound insulation board Fixed connection. 8. The roof pantograph installation structure according to claim 1, characterized in that: the shape of the sound insulation board matches the shape of the groove part and completely covers the groove part, and the sound insulation board At the same time, it is fixedly connected with the base and the vehicle body. 9. A vehicle roof pantograph installation structure according to claim 8, characterized in that: a ring of bead is provided around the circumference of the sound insulation board to adjust the vehicle connection between the sound insulation board and the groove part. gap between bodies. 10 . The pantograph installation structure on the vehicle roof according to claim 8 , wherein the sound insulation board is fixedly connected to the vehicle body through a vibration damping seat. 11 .