Floor damping structure for railway vehicle

Abstract

The floor damping structure for the railway vehicle comprises a floor and a railway vehicle chassis, a damping framework is arranged between the floor and the railway vehicle chassis, the damping framework comprises a plurality of frame longitudinal beams, a plurality of frame cross beams and a plurality of rubber damping pads, and the rubber damping pads are fixedly installed at the bottoms of the frame longitudinal beams. The rubber shock pad is assembled and connected with the railway vehicle chassis, the frame cross beam is clamped and assembled and connected with the frame longitudinal beam, a rubber buffer part I is connected between the floor and the frame longitudinal beam, and a rubber buffer part II is connected between the floor and the frame cross beam. The frame longitudinal beams and the frame cross beams form the grid supporting framework, and compared with an existing one-way framework structure, the grid supporting framework is more stable, can better absorb impact and is higher in impact resistance, so that the whole floor structure is more stable, the service life is longer, and the grid supporting framework is more suitable for being treaded by mass-flow crowds of railway vehicles for damping.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicle technology, specifically to a floor shock absorption structure for rail vehicles. Background Technology

[0002] With the increasing speed of trains and advancements in equipment technology, passengers have higher and higher demands for vehicle comfort. The interior floor, as a major load-bearing component, mainly consists of the floor itself, the floor fabric, and the floor frame. To improve floor shock absorption and comfort, existing trains install shock absorbers on the floor frame, thereby enhancing the floor's shock absorption capacity and overall comfort.

[0003] A search revealed a floor vibration damping structure for rail vehicles, as disclosed in announcement number CN110341733B. Its main features include a floor, a car body underframe, frame support beams, and vibration dampers. Multiple parallel frame support beams are arranged between the floor and the car body underframe. The height of the frame support beams is adjustable. Rigid support members are fixed above the frame support beams. The floor is fixed to the rigid support members. A first elastic buffer member is provided between the floor and the rigid support members. Sound-absorbing material is filled between adjacent frame support beams. An mounting section is formed on the car body underframe, and the vibration dampers are assembled and fixed within the mounting section. The vibration damper includes a vibration damper body and a rigid connecting member embedded in the top of the vibration damper body.

[0004] The support beam is fixed to the rigid connector, and a second elastic buffer is provided between the rigid connector and the frame support beam. The shock absorber has a damping part.

[0005] In actual use, the applicant found that the shock-absorbing frame of the train floor disclosed in the above embodiments is supported by a one-way frame beam. The overall integrity of the one-way frame beam is not good, which makes its stability and impact resistance poor. Due to the large passenger flow on the train all year round, the floor is prone to deformation, which affects the actual service life. Therefore, the above-mentioned one-way frame beam frame is difficult to meet the needs of the long-term use environment of the train. Therefore, it is necessary to design a new type of floor shock-absorbing structure for rail vehicles. Utility Model Content

[0006] The purpose of this invention is to provide a floor vibration damping structure for rail vehicles to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a floor vibration damping structure for rail vehicles, including a floor and a rail vehicle underframe, with a vibration damping frame provided between the floor and the rail vehicle underframe. The vibration damping frame includes multiple frame longitudinal beams, multiple frame transverse beams, and multiple rubber vibration damping pads. The rubber vibration damping pads are fixedly installed at the bottom of the frame longitudinal beams and are assembled and connected to the rail vehicle underframe. The frame transverse beams are snap-fitted and assembled with the frame longitudinal beams. Multiple connecting plates are fixedly connected to both sides of the frame transverse beams. The connecting plates are connected to the frame longitudinal beams via bolts. The floor is fixedly installed on the frame longitudinal beams and the frame transverse beams. A rubber buffer component one is provided between the floor and the frame longitudinal beams, and a rubber buffer component two is provided between the floor and the frame transverse beams.

[0008] According to the above technical solution, the rail vehicle chassis is provided with an installation part, and the installation part is provided with an assembly groove, and the rubber shock-absorbing pad is adapted to be inserted into the assembly groove.

[0009] According to the above technical solution, the upper part of the frame longitudinal beam is provided with multiple slots 1, the opening width of the slots 1 is adapted to the frame crossbeam, and the lower part of the frame crossbeam is provided with multiple slots 2, the opening width of the slots 2 is adapted to the width of the frame longitudinal beam, and the frame longitudinal beam and the frame crossbeam are connected by the slots 1 and slots 2.

[0010] According to the above technical solution, a through hole 1 is provided on the connecting ear, and a through through hole 2 is provided on the frame longitudinal beam. A connecting bolt passes through the through hole 1 and the through hole 2, and a locking nut is threaded onto the connecting bolt.

[0011] According to the above technical solution, the gaps between the frame crossbeams and the frame longitudinal beams are filled with sound-absorbing cotton.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model, through the grid support skeleton composed of frame longitudinal beams and frame transverse beams, is more stable than the existing unidirectional skeleton structure, and can better absorb impact and has higher impact resistance. Therefore, the entire floor structure is more stable, has a longer service life, and is more suitable for shock absorption by large crowds of people walking on rail vehicles. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the overall front sectional view of this utility model;

[0015] Figure 2 This is an exploded three-dimensional schematic diagram of the frame longitudinal beam and the frame transverse beam in this utility model;

[0016] In the diagram: 1-Floor, 2-Rail vehicle underframe, 3-Shock-absorbing frame, 4-Frame longitudinal beam, 5-Frame transverse beam, 6-Rubber shock-absorbing pad, 7-Connecting plate, 8-Rubber buffer component one, 9-Rubber buffer component two, 10-Installation part, 11-Assembly slot, 12-Slot one, 13-Slot two, 14-Through hole one, 15-Through hole two, 16-Connecting bolt, 17-Locking nut, 18-Sound-absorbing cotton. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-2 The present invention provides a technical solution: a floor shock-absorbing structure for rail vehicles, comprising a floor 1 and a rail vehicle underframe 2, wherein a shock-absorbing frame 3 is provided between the floor 1 and the rail vehicle underframe, the above structure constitutes the floor structure of the rail vehicle, wherein the shock-absorbing frame 3 supports the floor 1 and at the same time plays a role in shock absorption of the floor 1.

[0019] Please see Figure 1-2 The shock-absorbing frame 3 includes multiple frame longitudinal beams 4, multiple frame transverse beams 5, and multiple rubber shock-absorbing pads 6. The rubber shock-absorbing pads 6 are fixedly installed at the bottom of the frame longitudinal beams 4 and are assembled and connected to the rail vehicle underframe 2. The frame transverse beams 5 are snap-fitted and assembled with the frame longitudinal beams 4. The floor 1 is fixedly installed on the frame longitudinal beams 4 and the frame transverse beams 5. In this structure, when the floor is stepped on, the stepping force will be transmitted to the rubber shock-absorbing pads 6 through the frame longitudinal beams 4 and the frame transverse beams 5. The rubber shock-absorbing pads 6 are used to buffer the force, so that the floor has a good shock absorption effect.

[0020] Furthermore, the frame longitudinal beams 4 and frame transverse beams 5 in the above structure form a grid support skeleton, which is more stable than the existing unidirectional skeleton structure and can better absorb impact, thus having higher impact resistance. Therefore, the entire floor structure is more stable and more suitable for shock absorption by large crowds of people walking on rail vehicles.

[0021] Please see Figure 1-2A rubber buffer component 8 is installed between the floor 1 and the frame longitudinal beam 4, and a rubber buffer component 9 is installed between the floor 1 and the frame transverse beam 5. This structure uses the rubber buffer component 8 and the rubber buffer component 9 to provide a certain buffering effect and a certain shock absorption effect, making it more comfortable for people to step on the floor 1.

[0022] Please see Figure 1-2 The rail vehicle underframe 2 has an installation part 10, and an assembly groove 11 is provided on the installation part 10. The rubber shock absorber 6 is adapted to be inserted into the assembly groove 11. In this structure, the rubber shock absorber 6 is inserted into the assembly groove 11 on the installation part 10, thereby connecting the rubber shock absorber 6 to the rail vehicle underframe 2.

[0023] Please see Figure 1-2 The upper part of the frame longitudinal beam 4 is provided with multiple slots 12, the opening width of which is adapted to the frame cross beam 5. The lower part of the frame cross beam 5 is provided with multiple slots 23, the opening width of which is adapted to the width of the frame longitudinal beam 4. The frame longitudinal beam 4 and the frame cross beam 5 are connected by the matching slots 12 and 23. This structure uses slots 12 and 13 to make the frame longitudinal beam 4 and the frame cross beam 5 be connected together in a limited manner.

[0024] Please see Figure 1-2 Multiple connecting plates 7 are fixedly connected to both sides of the frame beam 5. The connecting plates 7 are connected to the frame longitudinal beam 4 by bolts. This structure connects the frame beam 5 and the frame longitudinal beam 4 through the connecting plates 7 after the frame beam 5 and the frame longitudinal beam 4 are snapped together, thereby preventing the frame beam 5 and the frame longitudinal beam 4 from separating.

[0025] Please see Figure 1-2 The connecting plate 7 has a through hole 14 and the frame longitudinal beam 4 has a through hole 15. A connecting bolt 16 passes through the through hole 14 and the through hole 15. A locking nut 17 is threaded onto the connecting bolt 16. This structure uses the connecting bolt 16 to pass through the through hole 14 and the through hole 15, and then screws in the locking nut 17, so that the connecting plate 7 can be connected to the frame longitudinal beam 4.

[0026] Please see Figure 1-2 The gaps between the frame beams 5 and the frame longitudinal beams 4 are filled with sound-absorbing cotton 18. This structure uses the sound-absorbing cotton 18 to absorb sound and reduce noise.

[0027] The implementation principle of a vibration damping structure for a rail vehicle floor according to an embodiment of this application is as follows: When the floor is stepped on, the stepping force is first transmitted to the rubber buffer 8 and the rubber buffer 9. Then, the rubber buffer 8 and the rubber buffer 9 play the first buffering and damping role, making the foot feel more comfortable when people step on the floor 1. Then, the stepping force is transmitted to the rubber damping pad 6 through the frame longitudinal beam 4 and the frame transverse beam 5. The rubber damping pad 6 buffers the force, so that the floor has a good vibration damping effect.

[0028] Furthermore, the frame longitudinal beams 4 and frame transverse beams 5 in the above structure form a grid support skeleton, which is more stable than the existing unidirectional skeleton structure and can better absorb impact, thus making the entire floor structure more stable and more suitable for shock absorption by large crowds of people walking on rail vehicles.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A floor damping structure for a railway vehicle, comprising a floor (1) and a railway vehicle underframe (2), characterized in that: The floor (1) and the rail vehicle chassis are provided with a damping framework (3), the damping framework (3) comprises a plurality of frame longitudinal beams (4), a plurality of frame transverse beams (5) and a plurality of rubber damping pads (6), the rubber damping pads (6) are fixedly installed at the bottom of the frame longitudinal beams (4), the rubber damping pads (6) are assembled and connected with the rail vehicle chassis (2), the frame transverse beams (5) are assembled and connected with the frame longitudinal beams (4) through clamping, both sides of the frame transverse beams (5) are fixedly connected with a plurality of connecting plates (7), the connecting plates (7) are connected with the frame longitudinal beams (4) through bolt structures, the floor (1) is fixedly installed on the frame longitudinal beams (4) and the frame transverse beams (5), and rubber buffer one (8) is arranged between the floor (1) and the frame longitudinal beams (4).

2. A floor (1) damping structure for a rail vehicle according to claim 1, characterized in that: The rail vehicle chassis (2) is provided with a mounting portion (10), the mounting portion (10) is provided with an assembly groove (11), and the rubber damping pad (6) is adaptively inserted into the assembly groove (11).

3. A floor (1) damping structure for a rail vehicle according to claim 1, characterized in that: The upper portion of the frame longitudinal beam (4) is provided with a plurality of clamping grooves one (12), the opening width of the clamping grooves one (12) is adapted to the frame transverse beams (5), the lower portion of the frame transverse beams (5) is provided with a plurality of clamping grooves two (13), the opening width of the clamping grooves two (13) is adapted to the width of the frame longitudinal beams (4), and the frame longitudinal beams (4) and the frame transverse beams (5) are adaptively connected through the clamping grooves one (12) and the clamping grooves two (13).

4. A floor (1) damping structure for a rail vehicle according to claim 1, characterized in that: A through hole one (14) is formed in the connecting plate (7), a through hole two (15) is formed in the frame longitudinal beam (4), a connecting bolt (16) penetrates through the through hole one (14) and the through hole two (15), and a locking nut (17) is threadedly connected with the connecting bolt (16).

5. A floor (1) damping structure for a rail vehicle according to claim 1, characterized in that: The gap between the frame transverse beams (5) and the frame longitudinal beams (4) is filled with sound-absorbing cotton (18).

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