Lateral vibration damping device, bogie and tramcar

Abstract

An embodiment of the present application provides a lateral damping device, a bogie and a tram, comprising: a lateral rod provided with a first end portion of the lateral rod and a second end portion of the lateral rod distributed transversely along the vehicle body, the first end portion of the lateral rod being used for connecting to the vehicle body; a support structure, the bottom of the support structure being used for being hinged to the frame of the bogie, the top of the support structure having two ends distributed transversely along the vehicle body, one of the ends being hinged to the second end portion of the lateral rod of the lateral rod; a pressure reduction structure, one end of which is used for connecting to the upper cover plate of the frame of the bogie, and the other end being hinged to the other end of the top of the support structure; the lateral rod is used for transmitting the lateral force generated when the vehicle body moves laterally relative to the bogie to the pressure reduction structure through the support structure, and the pressure reduction structure is used for attenuating the lateral vibration of the vehicle during operation, improving the running comfort of the vehicle while avoiding problems endangering the running safety of the vehicle such as the fracture of key components of the train and derailment.

Description

Technical Field

[0001] The present application relates to the technical field of tramcars, and particularly relates to a lateral damping device, a bogie and a tramcar. Background Art

[0002] The lateral damper can attenuate the lateral vibration caused by the lateral force generated from the wheel-rail contact and crosswind, etc., extend the structural strength and service life of components, improve the riding comfort of passengers, and avoid problems endangering the train operation safety such as the fracture and derailment of key train components. The lateral damper for the bogie of rail vehicles is generally of a double-tube structure, mainly composed of a working cylinder, a piston rod, a dust cover, a guide, an oil storage barrel, damping oil, etc. The piston in the damper moves up and down, and the oil in the working cylinder flows from one chamber into another chamber through a hole. At this time, the friction between the valve system and the oil and the internal friction between the oil molecules generate a damping force on the vibration, suppressing the vibration of the vehicle.

[0003] The wheel diameter of the bogies of high-speed multiple units and urban rail passenger cars is generally greater than 840 mm, and the bogie wheelbase is not less than 2200 mm. Therefore, the bogie has a certain structural space. However, modern tramcars adopt a 100% or 70% low-floor structure, and the height of the low-floor area from the rail surface is only 350 mm. The height of the bogie components from the rail surface is even lower, and at the same time, it is necessary to meet the requirements of the vehicle lower clearance. Therefore, there is no installation space for the structure of a conventional lateral damper. Summary of the Invention

[0004] In order to solve one of the above technical defects, the embodiments of the present application provide a lateral damping device, a bogie and a tramcar.

[0005] According to the first aspect of the embodiments of the present application, a lateral damping device is provided, which is used to be arranged on the bogie of a car body to transfer the lateral displacement between the car body and the bogie, and includes:

[0006] A lateral rod, provided with a first lateral rod end and a second lateral rod end distributed along the lateral direction of the car body, and the first lateral rod end is used to connect the car body;

[0007] A support structure, the bottom of the support structure is used to be hinged to the frame of the bogie, and the top of the support structure has two ends distributed along the lateral direction of the car body, and one of the ends is hinged to the second lateral rod end of the lateral rod;

[0008] A pressure relief structure, one end is used to be connected to the upper cover plate of the frame of the bogie, and the other end is hinged to the other end of the top of the support structure;

[0009] The lateral rod is used to transfer the lateral force generated when the car body moves laterally relative to the bogie to the pressure relief structure through the support structure.

[0010] According to the second aspect of the embodiments of the present application, a bogie is provided, which includes an upper cover plate of the frame and the lateral vibration damper as described above, and the lateral vibration damper is installed on the upper cover plate of the frame of the bogie.

[0011] According to the third aspect of the embodiments of the present application, a tram is provided, which includes the bogie as described above, and the lateral rod of the lateral vibration damper is hinged to the vehicle body of the tram through one end of the lateral rod.

[0012] Adopting a lateral vibration damper, a bogie and a tram provided by the embodiments of the present application has the following advantages:

[0013] It solves the problem that in the case where there is no installation space for a conventional lateral shock absorber on the bogie of a low-floor tram, the lateral vibration between the bogie and the vehicle body is transmitted through the lateral rod, the support structure transmits the lateral vibration transmitted by the lateral rod to the decompression structure, and the decompression structure is used to absorb and attenuate the lateral vibration of the vehicle during operation. While improving the running comfort of the vehicle, it avoids problems endangering the safety of train operation such as fracture and derailment of key train components. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0015] Figure 1 is a schematic diagram of the overall structure of a lateral vibration damper provided by the embodiments of the present application;

[0016] Figure 2 is a schematic diagram of the overall structure of the lateral rod of a lateral vibration damper provided by the embodiments of the present application;

[0017] Figure 3 is a schematic diagram of the overall structure of the support structure of a lateral vibration damper provided by the embodiments of the present application;

[0018] Figure 4 is a schematic diagram of the overall structure of the decompression structure of a lateral vibration damper provided by the embodiments of the present application;

[0019] Figure 5 is a schematic diagram of the overall structure of the frame of a bogie provided by the embodiments of the present application;

[0020] Figure 6 is a schematic diagram of the overall structure of a bogie provided by the embodiments of the present application.

[0021] In the figure: transverse rod 1, first end of the transverse rod 101, second end of the transverse rod 102, positioning support seat 2, first end of the positioning support seat 201, second end of the positioning support seat 202, third end of the positioning support seat 203, hydraulic shock absorber 3, dust cover end 301, oil storage barrel end 302, upper cover plate of the frame 4, vehicle body connection seat 5, frame fixing seat 6. Detailed implementation manners

[0022] In order to make the technical solutions and advantages in the embodiments of the present application clearer and more understandable, the following further details the exemplary embodiments of the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0023] In the process of implementing the present application, the inventor found that in the prior art, modern tramcars adopt a 100% or 70% low-floor structure, and the height of the low-floor area from the rail surface is only 350 mm. Therefore, the installation space of the bogie system is relatively limited. Under the condition of ensuring the vehicle passability and the floor surface height in the middle area of the bogie, there is usually no installation space for the lateral shock absorber.

[0024] In view of the above problems, the embodiments of the present application provide a lateral shock absorption device, a bogie and a tramcar.

[0025] According to the first aspect of the embodiments of the present application, a lateral shock absorption device is provided.

[0026] As Figures 1-4 shown, a lateral shock absorption device provided by the embodiments of the present application is used to be arranged on the bogie of the vehicle body to transmit the lateral displacement between the vehicle body and the bogie, and includes:

[0027] A transverse rod 1, provided with a first end 101 of the transverse rod and a second end 102 of the transverse rod distributed along the lateral direction of the vehicle body, and the first end 101 of the transverse rod is used to connect the vehicle body;

[0028] A support structure, the bottom of the support structure is used to be hinged to the frame of the bogie, and the top of the support structure has two ends distributed along the lateral direction of the vehicle body, and one of the ends is hinged to the second end 102 of the transverse rod 1;

[0029] A pressure reduction structure, one end is used to be connected to the upper cover plate 4 of the frame of the bogie, and the other end is hinged to the other end of the top of the support structure;

[0030] The transverse rod 1 is used to transmit the lateral force generated when the vehicle body moves laterally relative to the bogie to the pressure reduction structure through the support structure.

[0031] In the specific implementation process, the transverse rod 1 is provided with a first transverse rod end 101 and a second transverse rod end 102 that are distributed along the transverse direction of the vehicle body. The first transverse rod end 101 is fixedly connected to the vehicle body connecting seat 5, and the vehicle body connecting seat 5 is fixedly welded to the underframe of the vehicle body. The bottom of the support structure is hinged and installed on the frame fixing seat 6 of the bogie, and one end of the top of the support structure is hinged to the second transverse rod end 102 of the transverse rod 1. One end of the pressure reducing structure is connected to the upper cover plate 4 of the frame, and the other end is hinged to the other end of the top of the support structure. During the operation of the train, the transverse vibration between the bogie and the vehicle body transmitted by the transverse rod 1 acts on the pressure reducing structure, and the pressure reducing structure is used to attenuate the transverse vibration of the vehicle during operation.

[0032] In the embodiment of the present application, the support structure is a positioning support seat 2. The top of the positioning support seat 2 is provided with a first positioning support seat end 201 and a second positioning support seat end 202 that are distributed along the transverse direction of the vehicle body. The bottom of the positioning support seat 2 is provided with a third positioning support seat end 203. The first positioning support seat end 201 is hinged to the other end of the pressure reducing structure. The second positioning support seat end 202 is connected to the second transverse rod end 102. The third positioning support seat end 203 is connected to the upper cover plate 4 of the frame.

[0033] In the specific implementation process, the support structure is a positioning support seat 2. The top of the positioning support seat 2 is provided with a first positioning support seat end 201. The other end opposite to one end of the first positioning support seat end 201 is provided with a second positioning support seat end 202. The second positioning support seat end 202 is connected to the second transverse rod end 102. The bottom of the positioning support seat 2 is provided with a third positioning support seat end 203. The third positioning support seat end 203 is connected to the upper cover plate 4 of the frame. During the transmission of the transverse vibration between the vehicle body and the bogie on the transverse rod 1, the third positioning support seat end 203 fixes the positioning support seat 2 to the frame fixing seat 6, and tightly connects the transverse rod 1 and the pressure reducing structure respectively. At the same time, when the transverse position between the bogie and the vehicle body changes, the position of the transverse rod 1 changes accordingly, and the positioning support seat 2 rotates around the third positioning support seat end 203.

[0034] In the embodiment of the present application, the pressure reducing structure includes an oil damper 3. The dust cover end 301 of the oil damper 3 is hinged to the first positioning support seat end 201 by a rubber joint, and the oil storage barrel end 302 of the oil damper 3 is used to connect to the upper cover plate 4 of the frame.

[0035] In the specific implementation process, the pressure reduction structure includes an oil hydraulic shock absorber 3, and the oil hydraulic shock absorber 3 adopts a conventional double-tube oil hydraulic shock absorber in modern rail vehicle design. The oil hydraulic shock absorber 3 is vertically arranged on the bogie. The dust cover end 301 of the oil hydraulic shock absorber 3 is hinged to one end 201 of the positioning support seat through a rubber node. The oil storage barrel end 302 of the oil hydraulic shock absorber 3 is fixedly installed on the upper cover plate 4 of the bogie frame through four bolts. When the positioning support seat 2 rotates with the end 203 of the positioning support seat as the rotation center, it drives the dust cover 301 end of the oil hydraulic shock absorber 3 to move upward or downward. A damping force is generated through the pressure difference of the piston valve inside the oil hydraulic shock absorber 3, and a part of the vibration energy is absorbed and converted into heat energy and dissipated into the atmosphere. That is, the oil hydraulic shock absorber 3 as the pressure reduction structure is vertically arranged on the upper cover plate 4 of the frame to convert the lateral relative displacement or lateral force between the car body and the bogie into the vertical deformation of the pressure reduction structure, thereby obtaining buffering.

[0036] In addition, the horizontally arranged cross bar 1 and the vertically arranged pressure reduction structure are directly connected through a support structure (positioning support seat 2). The bottom of the support structure is hinged to the bogie. If all the cross bars 1, the support structure, and the pressure reduction structure are rigidly connected, the force transmission between them is rigid, and the effect of buffering the lateral displacement and force of the car body through the pressure reduction structure cannot reach the optimum. Therefore, in the embodiment of the present application, the joints are designed as elastic rubber nodes, so as to convert the lateral displacement or force into the deformation trend of the pressure reduction structure through the elasticity of the rubber nodes, and further make the pressure reduction structure have a better buffering effect.

[0037] Specifically, in the embodiment of the present application, the first end 101 of the cross bar uses a rubber node to be hinged to the car body, and the second end 102 of the cross bar uses a rubber node to be hinged to one end of the top of the support structure; the third end 203 of the positioning support seat also uses a rubber node to be hinged to the upper cover plate 4 of the frame.

[0038] In the specific implementation process, the cross bar 1 is forged from alloy structural steel 42CrMo, and the positioning support seat 2 is forged from alloy structural steel 45 steel, and the main structure is a dovetail structure. The first end 101 of the cross bar uses a rubber node to be hinged to the car body, and the second end 102 of the cross bar uses a rubber node to be hinged to one end of the top of the support structure. The third end 203 of the positioning support seat also uses a rubber node to be hinged to the upper cover plate 4 of the frame. The first end 101 of the cross bar is fixed on the positioning support seat 2 through fasteners, and the second end 102 of the cross bar is connected to the car body through fasteners. The rubber nodes inside the first end 101 and the second end 102 of the cross bar can meet the deformation requirements of the conversion of lateral displacement and vertical displacement.

[0039] According to the second aspect of the embodiments of the present application, a bogie is provided, which includes an upper cover plate 4 of the frame. The bogie is provided with the transverse vibration damping device as described above, and the transverse vibration damping device is installed on the upper cover plate 4 of the frame of the bogie.

[0040] In the specific implementation process, as Figure 5 shown, two transverse vibration damping devices are provided on the bogie and are arranged at intervals in the transverse direction of the car body. An upper frame fixing seat 6 is provided on the upper cover plate 4 of the frame. Both of the two upper frame fixing seats 6 are U-shaped fixing seats. The transverse vibration damping device includes a positioning support seat 2 and a pressure reducing structure. The bottom of the positioning support seat 2 is hinged to the upper frame fixing seat 6; the bottom of the pressure reducing structure is vertically fixedly arranged on the upper cover plate 4 of the frame through bolts. During the running of the train, the displacement between the bogie and the car body is transmitted through the transverse vibration damping devices on both sides of the bogie. When the transverse position between the bogie and the car body changes relatively, the position of the transverse rod 1 in the transverse vibration damping device also changes accordingly. The positioning support seat 2 drives the dust cover end 301 of the oil pressure shock absorber 3 to move upward or downward (or a moving trend) with the end three 203 of the positioning support seat as the rotation center. At the same time, a damping force is generated through the pressure difference of the piston valve inside the oil pressure shock absorber 3, and a part of the vibration energy is absorbed and converted into heat energy and dissipated into the atmosphere. One end of the dust cover end 301 of the oil pressure shock absorber 3 adopts a rubber node installation form to adapt to the relative displacement between the bogie and the car body, and the oil pressure shock absorber 3 maintains a vertical damping change.

[0041] According to the third aspect of the embodiments of the present application, a tram is provided, which includes the bogie as described above.

[0042] In the specific implementation process, as Figure 6 shown, the transverse rod 1 of the transverse vibration damping device is hinged to the car body of the tram through the first end 101 of the transverse rod. A car body connecting seat 5 is fixedly arranged on the underframe of the tram, and the first end 101 of the transverse rod is hinged to the car body connecting seat 5.

[0043] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0044] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

Claims

1. A lateral vibration damping device for being arranged between a car body and a bogie, characterized in that Comprising: A transverse rod (1), provided with a first transverse rod end (101) and a second transverse rod end (102) arranged along the transverse direction of the vehicle body, and the first transverse rod end (101) is used for connecting the vehicle body; A support structure, the bottom of the support structure is used for being hinged to the frame of the bogie, and the top of the support structure has two ends distributed along the transverse direction of the vehicle body, and one of the ends is hinged to the second transverse rod end (102) of the transverse rod (1); A pressure reducing structure, one end is used for connecting to the upper cover plate (4) of the frame of the bogie, and the other end is hinged to the other end of the top of the support structure; The transverse rod (1) is used for transmitting the transverse acting force generated when the vehicle body moves transversely relative to the bogie to the pressure reducing structure through the support structure.

2. The lateral damping device according to claim 1, characterized in that, The support structure is a positioning support seat (2), the top of the positioning support seat (2) is provided with a first positioning support seat end (201) and a second positioning support seat end (202) distributed along the transverse direction of the vehicle body, and the bottom of the positioning support seat (2) is provided with a third positioning support seat end (203); The first positioning support seat end (201) is hinged to the other end of the pressure reducing structure; the second positioning support seat end (202) is hinged to the second transverse rod end (102); the third positioning support seat end (203) is connected to the upper cover plate (4) of the frame.

3. The lateral damping device according to claim 2, characterized in that, The pressure reducing structure includes an oil pressure shock absorber (3), the dust cover end (301) of the oil pressure shock absorber (3) is hinged to the first positioning support seat end (201) by a rubber joint, and the oil storage barrel end (302) of the oil pressure shock absorber (3) is used for connecting to the upper cover plate (4) of the frame.

4. The lateral damping device according to claim 1, characterized in that, The first transverse rod end (101) is used for being hinged to the vehicle body by a rubber joint, and the second transverse rod end (102) is hinged to one end of the top of the support structure by a rubber joint.

5. The lateral damping device according to claim 2, characterized in that, The third positioning support seat end (203) is also hinged to the upper cover plate (4) of the frame by a rubber joint.

6. A bogie, comprising an upper cover plate (4) of a frame, characterized in that, The bogie is provided with a transverse vibration damping device as described in any one of claims 1-5, and the transverse vibration damping device is installed on the upper cover plate (4) of the frame of the bogie.

7. The bogie according to claim 6, characterized in that, Two of the transverse vibration damping devices are provided on the bogie, and they are arranged at intervals along the transverse direction of the vehicle body.

8. A bogie according to claim 6, characterized in that, An upper cover plate fixing seat (6) is provided on the upper cover plate (4) of the frame, the transverse vibration damping device includes a positioning support seat (2) and a pressure reducing structure, and the bottom of the positioning support seat (2) is hinged to the upper cover plate fixing seat (6); The bottom of the pressure reducing structure is fixedly arranged on the upper cover plate (4) of the frame by bolts.

9. A tram, characterized in that, Comprising the bogie as described in any one of claims 6-8, and the transverse rod (1) of the transverse vibration damping device is hinged to the vehicle body of the tram through the first transverse rod end (101).

10. A tram according to claim 9, characterized in that, A vehicle body connecting seat (5) is fixedly arranged on the underframe of the tram, and the first transverse rod end (101) is hinged to the vehicle body connecting seat (5).

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