Bogie and railway vehicle

Abstract

The utility model relates to the technical field of rail transit, particularly discloses a bogie and a rail vehicle, and aims to solve the problem that a traction device of a motor direct-drive bogie is difficult to arrange at a central low position. The bogie comprises a framework, a motor, a traction rod connecting seat, a vehicle body traction seat and a traction rod. Wherein the motor is arranged on the framework, the vehicle body traction seat is connected with a vehicle body, the traction rod connecting seat is arranged on a shell of the motor, one end of the traction rod is connected with the traction rod connecting seat, and the other end is connected with the vehicle body traction seat. According to the bogie, the shell of the motor serves as a transmission medium of traction force, and even if the distance between the lower portion of the motor and the rail surface is small, the traction structure can be arranged at the low center position. And in addition, through the traction mode that force is transmitted through the motor shell, the traction structural form is simplified, and the lightweight requirement of bogie design is met to a certain extent. The utility model further discloses a railway vehicle with the bogie, and the railway vehicle has the same technical effects.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, and more specifically, to a bogie and a rail vehicle. Background Art

[0002] With the advancement of permanent magnet motor technology, more and more rail vehicles are using bogies that are directly driven by permanent magnet motors. The permanent magnet direct drive system can eliminate the gear transmission mechanism and directly drive the axle, but it also determines that the size of the motor is much larger than the diameter of the traditional asynchronous motor. The greater the power demand of the vehicle, the larger the diameter of the motor, and the larger the space occupied. As a result, the distance between the lower part of the motor and the rail surface is small, and the traction device cannot be arranged at the central low position, reducing the axle weight transfer of the bogie, and it is impossible to exert sufficient traction power.

[0003] In summary, how to effectively solve the problem that the traction device of the motor direct-driven bogie is difficult to arrange in a low central position is a problem that technical personnel in this field need to solve. Utility Model Content

[0004] In view of this, an object of the present utility model is to provide a bogie and a rail vehicle, the structural design of which can effectively solve the problem that the traction device of the motor-direct-driven bogie is difficult to arrange in a central low position.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] A bogie comprises a frame and a motor arranged on the frame, and further comprises:

[0007] A traction rod connecting seat, arranged on the housing of the motor;

[0008] A vehicle body traction seat, used for connecting with the vehicle body;

[0009] A traction rod, one end of which is connected to the traction rod connecting seat, and the other end of which is connected to the vehicle body traction seat.

[0010] Optionally, in the above-mentioned bogie, the traction rod connecting seat is rotatably connected to the traction rod, and the rotation axis is along the vertical direction.

[0011] Optionally, in the above-mentioned bogie, the traction rod connecting seat is connected to the traction rod through a traction pin, and a flexible sleeve is provided on the outer sleeve of the traction pin.

[0012] Optionally, in the above-mentioned bogie, the traction rod is connected to the vehicle body traction seat through a traction rod rubber joint, and the traction rod rubber joint is arranged in the transverse direction.

[0013] Optionally, the above bogie further includes:

[0014] A mounting seat, provided on the frame;

[0015] A frame connection seat, provided on the housing, the frame connection seat being connected to the mounting seat;

[0016] Two swing rods are respectively arranged on both sides of the traction rod connecting seat, and one end of each swing rod is connected to the frame, and the other end is connected to the shell.

[0017] Optionally, in the above-mentioned bogie, the frame connecting seat is rotatably connected to the mounting seat, and the rotation axis is in the transverse direction.

[0018] Optionally, in the above-mentioned bogie, the frame connecting seat and the mounting seat are rotatably connected via a connecting seat rubber joint.

[0019] Optionally, in the above-mentioned bogie, the traction rod is arranged to be inclined relative to the rail surface.

[0020] Optionally, in the above-mentioned bogie, the bogie is a two-axle bogie or a three-axle bogie.

[0021] The bogie provided by the utility model comprises a frame, a motor, a traction rod connection seat, a vehicle body traction seat and a traction rod, wherein the motor is arranged on the frame, the vehicle body traction seat is used to connect with the vehicle body, the traction rod connection seat is arranged on the housing of the motor, one end of the traction rod is connected to the traction rod connection seat, and the other end is connected to the vehicle body traction seat.

[0022] The bogie provided by the utility model is applied, by setting a traction rod connection seat on the outer shell of the motor, one end of the traction rod is connected to the traction rod connection seat, and the other end is connected to the vehicle body traction seat, so as to realize the transmission of traction force, that is, the outer shell of the motor is used as the transmission medium of traction force, and the traction method of transmitting force through the outer shell is no longer limited by the distance requirement between the lower part of the motor and the rail surface. Even if the bogie adopts a permanent magnet motor direct drive or a high-power traction motor, and the distance between the lower part of the motor and the rail surface is small, the layout of the traction structure in the central low position can be realized. And the traction method of transmitting force through the outer shell of the motor simplifies the structural form of traction, and meets the lightweight requirements of the bogie design to a certain extent.

[0023] In a preferred embodiment, the traction rod is tilted relative to the rail surface. The tilt angle can be set accordingly according to the specific structure of the bogie, so that the distance between the intersection of the extension of the traction rod centerline and the bogie centerline and the rail surface reaches the ideal nominal traction point height value, at which time the axle load transfer of the whole vehicle is minimized, the adhesion utilization rate is maximized, and the maximum traction force is exerted.

[0024] In order to achieve the above object, the utility model also provides a rail vehicle, which includes any of the above bogies. Since the above bogies have the above technical effects, the rail vehicle with the bogies should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a partial top view structural schematic diagram of a bogie in a specific embodiment of the utility model;

[0027] Figure 2 for Figure 1 A front view schematic diagram of

[0028] Figure 3 for Figure 1 Schematic diagram of the motor;

[0029] Figure 4 for Figure 3 A front view schematic diagram of

[0030] Figure 5 for Figure 1 Schematic diagram of the middle traction bar;

[0031] Figure 6 for Figure 5 A front view schematic diagram of

[0032] Figure 7 for Figure 2 A partial enlarged schematic diagram of .

[0033] The following are marked in the accompanying drawings:

[0034] 101-vehicle body traction seat; 102-traction rod; 103-motor; 1031-traction rod connecting seat; 1032-frame connecting seat; 104-traction pin; 105-connecting seat rubber joint; 106-flexible sleeve; 107-traction rod rubber joint; 201-mounting seat; 202-rocker; 203-frame; 300-rail surface; 400-center line; α-angle between traction rod and rail surface; H-nominal traction point height. DETAILED DESCRIPTION

[0035] The utility model discloses a bogie and a rail vehicle, which break through the limitation of the outer dimensions of the motor on the lower space, and can realize the layout of the traction structure at a central low position when the distance between the lower part of the motor and the rail surface is small.

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] The bogie plays the role of bearing, guiding and reducing vibration for the entire vehicle. It is also the final actuator of traction and braking, responsible for transmitting the vehicle traction and braking force to the wheels. The bogie provided by the utility model transmits traction force through the motor housing, which can ignore the limitation of the motor's outer dimensions on the lower space. It is particularly suitable for but not limited to high-power traction motors or permanent magnet motors directly driven bogies. In the following embodiments, the traction structure and related connection relationships of the bogie are mainly described. Please refer to the prior art for the specific settings of the bogie frame.

[0038] See also Figure 1-Figure 7 , Figure 1 It is a partial top view structural schematic diagram of a bogie in a specific embodiment of the utility model; Figure 2 for Figure 1 A front view schematic diagram of Figure 3 for Figure 1 Schematic diagram of the motor; Figure 4 for Figure 3 A front view schematic diagram of Figure 5 for Figure 1 Schematic diagram of the middle traction bar; Figure 6 for Figure 5 A front view schematic diagram of Figure 7 for Figure 2 A partial enlarged schematic diagram of .

[0039] In a specific embodiment, the bogie provided by the utility model includes a frame 203, a motor 103, a traction rod connection seat 1031, a vehicle body traction seat 101 and a traction rod 102. Among them, the motor 103 is arranged on the frame 203, and can be specifically hung on the frame 203. The vehicle body traction seat 101 is used to connect with the vehicle body, and its structure can be set accordingly according to the matching with the vehicle body. The vehicle body traction seat 101 can be specifically connected with the vehicle body through fasteners, and the fasteners include but are not limited to bolts. The traction rod connection seat 1031 is arranged on the housing of the motor 103. It can be understood that the traction rod connection seat 1031 and the housing can be connected in an integral manner or in a split structure and connected by conventional fixing methods such as welding and bolt connection. One end of the traction rod 102 is connected to the traction rod connection seat 1031, and the other end is connected to the vehicle body traction seat 101. Then the force between the bogie and the vehicle body can be transmitted through the housing, the traction rod connection seat 1031, the traction rod 102, and the vehicle body traction seat 101.

[0040] The bogie provided by the utility model is applied, by setting a traction rod connection seat 1031 on the outer shell of the motor 103, one end of the traction rod 102 is connected to the traction rod connection seat 1031, and the other end is connected to the vehicle body traction seat 101, so as to realize the transmission of traction force, that is, the outer shell of the motor 103 is used as the transmission medium of traction force, and the traction mode of transmitting force through the outer shell is no longer limited by the distance requirement between the lower part of the motor 103 and the rail surface 300. When the bogie adopts a permanent magnet motor 103 direct drive or a high-power traction motor 103 and the distance between the lower part of the motor 103 and the rail surface 300 is small, the layout of the traction structure in the central low position can also be realized. And the traction mode of transmitting force through the outer shell of the motor 103 simplifies the structural form of traction, and meets the lightweight requirements of the bogie design to a certain extent.

[0041] In one embodiment, the traction rod connection seat 1031 is rotatably connected to the traction rod 102, and the rotation axis is along the vertical direction. The above arrangement can adapt to the turning angle of the vehicle body and the bogie when the vehicle passes through a curve, and the structure is simple.

[0042] In one embodiment, the traction rod connection seat 1031 is connected to the traction rod 102 through the traction pin 104, and the traction pin 104 is provided with a flexible sleeve 106. That is, the traction rod connection seat 1031 and the traction rod 102 are rotatably connected through the traction pin 104, and the traction pin 104 is arranged in the vertical direction to adapt to the turning angle of the car body and the bogie when the vehicle passes the curve. In addition, by arranging the flexible sleeve 106 on the outer surface of the traction pin 104, its deformation can adapt to the rotation caused by the vertical sinking and floating of the car body, and the flexible sleeve 106 is conducive to reducing the precision requirements for the assembly of the car body and the bogie. It should be noted that the flexible sleeve 106 can be specifically a rubber sleeve, and can also be other materials that can achieve deformation as needed. During assembly, the flexible sleeve 106 is installed in the traction rod connection seat 1031, and is connected to one end of the traction rod 102 through the traction pin 104 and the fastener. Specifically, the traction pin 104 is inserted into the flexible sleeve 106, and both ends are respectively inserted into the through holes of the traction rod 102, and the traction pin 104 is limited by the traction rod connecting seat 1031 and the traction rod 102 through a fastener to ensure the connection between the two. In other embodiments, the traction rod connecting seat 1031 and the traction rod 102 can also be connected through a radial spherical bearing, that is, the traction pin 104 in this embodiment is replaced by a radial spherical bearing, which can also adapt to the rotation of the traction rod 102 caused by the horizontal rotation angle of the car body and the bogie.

[0043] In one embodiment, the traction rod 102 is connected to the vehicle body traction seat 101 through a traction rod rubber joint 107, and the traction rod rubber joint 107 is arranged in the transverse direction. That is, an inner hole is arranged at one end of the traction rod 102 away from the traction rod connection seat 1031, and the traction rod rubber joint 107 is installed in the inner hole. The traction rod rubber joint 107 can compensate for the vertical and longitudinal deviations when the vehicle body and the bogie are assembled. In addition, by installing the traction rod rubber joint 107 in the inner hole at the other end of the traction rod 102, the displacement change when the vehicle body sinks and floats vertically can be adapted, such as the traction rod 102 can swing accordingly when the vehicle body sinks and floats vertically. Further, the traction rod rubber joint 107 cooperates with the flexible sleeve 106, and through radial deformation and torsion, the traction rod 102 can participate in deformation vertically and adapt to a certain rotation. In other embodiments, the traction rod 102 and the vehicle body traction seat 101 can also be connected through a radial spherical bearing, which can also adapt to the rotation of the traction rod 102 caused by the vertical sinking and floating of the vehicle body and the bogie. Specifically, a fastener is provided to cooperate with the traction rod rubber joint 107. For example, the traction rod rubber joint 107 is passed through the inner hole of the other end of the traction rod 102, and its two ends extend from the traction rod. The two ends are respectively fixed to the vehicle body traction seat 101 by fasteners, and the fasteners can be specifically bolts.

[0044] In one embodiment, the bogie further includes a mounting seat 201, a frame connection seat 1032 and two swing rods 202. Among them, the mounting seat 201 is arranged on the frame 203; the frame connection seat 1032 is arranged on the shell, and the frame connection seat 1032 is connected to the mounting seat 201; the two swing rods 202 are respectively arranged on both sides of the traction rod connection seat 1031, and one end of each swing rod 202 is connected to the frame 203, and the other end is connected to the shell. That is, two mounting structures are arranged on the shell of the motor 103, namely the traction rod connection seat 1031 and the frame connection seat 1032. The frame connection seat 1032 is connected to the mounting seat 201 on the frame 203, and cooperates with the two swing rods 202 to form a three-point suspension, and the motor 103 is suspended together. On the one hand, the frame connection seat 1032 is directly connected to the mounting seat 201 as a suspension point, and there is no need to set a suspension rod, which simplifies the structure. At the same time, the frame connecting seat 1032 is connected to the mounting seat 201. This connection not only serves as a hanging point for the motor 103 and plays a role in vertically suspending the motor 103, but is also used to transmit the longitudinal traction and braking force of the bogie.

[0045] In one embodiment, the frame connection seat 1032 is rotatably connected to the mounting seat 201, and the rotation axis is in the transverse direction. The frame connection seat 1032 is rotatably connected to the mounting seat 201 to adapt to the rotation caused by the vertical heave and float of the car body and the bogie.

[0046] Furthermore, the frame connection seat 1032 is rotationally connected to the mounting seat 201 through the connection seat rubber joint 105. The rotational connection of the connection seat rubber joint 105 can adapt to the rotation caused by the vertical rise and fall of the car body and the bogie, and can also compensate for the position deviation when the motor 103 and the bogie are assembled, thereby reducing the accuracy requirement and facilitating assembly. Specifically, a fastener is provided in cooperation with the connection seat rubber joint 105, such as the connection seat rubber joint 105 is penetrated through the inner hole of the frame connection seat 1032, and its two ends extend from the frame connection seat 1032, and the two ends are respectively fixed to the mounting seat 201 by fasteners, and the fasteners can specifically be bolts. In other embodiments, the frame connection seat 1032 and the mounting seat 201 can also be connected by a radial spherical bearing, which can also adapt to the rotation of the traction rod 102 caused by the vertical rise and fall of the car body and the bogie.

[0047] In one embodiment, the traction rod 102 is tilted relative to the rail surface 300. That is, the traction rod 102 has a certain tilt angle relative to the rail surface 300. Specifically, the angle α between the traction rod 102 and the rail surface 300 can be adjusted according to the structural form of the bogie so that the distance between the intersection of the extension of the center line 400 and the center line 400 of the bogie and the rail surface 300 reaches the ideal nominal traction point height H, that is, by adjusting the tilt angle, the axle weight transfer of the whole vehicle is minimized, the adhesion utilization rate is maximized, and the maximum traction force can be exerted.

[0048] In the above embodiments, the bogie is specifically a two-axle bogie or a three-axle bogie. That is, the present application does not limit the form of the bogie, and is equally applicable to two-axle bogies and three-axle bogies. In the case where the traction rod 102 is tilted, the center line 400 of the bogie and the nominal traction point height H can be determined, and then the angle α between the traction rod 102 and the rail surface 300 can be determined.

[0049] In order to better illustrate the present solution, the assembly process of the bogie in a preferred embodiment is taken as an example. First, the connection seat rubber joint 105 is installed in the hole of the frame connection seat 1032 of the housing of the motor 103, and the flexible sleeve 106 is installed in the hole of the traction rod connection seat 1031. Then, the assembled motor 103 is assembled with the wheelset, and three-point suspension is performed through two rocker arms 202 and the frame connection seat 1032 provided with the connection seat rubber joint 105. Then, the traction rod rubber joint 107 is installed in the inner hole at the other end of the traction rod 102, and the assembled traction rod 102 is connected to the traction rod connection seat 1031 of the motor 103 through the traction pin 104. The car body is connected to the car body traction seat 101 through fasteners. The car body traction seat 101 is connected to the traction rod rubber joint 107 in the traction rod 102 through fasteners. The setting of the angle α between the traction rod 102 and the rail surface 300 needs to be adjusted by the center line 400 of the bogie and the nominal traction point height H determined by the axle load transfer calculation.

[0050] Through the above structure, the traction mode of transmitting force through the housing of the motor 103 and the connection of the bogie are completed, which solves the problem that the motor 103 is too large to be arranged in the center. At the same time, the traction rod 102 is arranged with a certain angle α, and the nominal traction point height H of the bogie is adjusted to the optimum, which reduces the axle weight transfer, improves the adhesion utilization rate of the locomotive, and meets the traction power requirements of high-power locomotives. At the same time, the design of the traction pin 104, the flexible sleeve 106 and the traction rod rubber joint 107 can make the traction structure adapt to the horizontal rotation angle and vertical heaving and floating movement of the car body and the bogie.

[0051] Based on the bogies provided in the above embodiments, the utility model further provides a rail vehicle, which includes any one of the bogies in the above embodiments. Since the rail vehicle adopts the bogies in the above embodiments, please refer to the above embodiments for the beneficial effects of the rail vehicle.

[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bogie, comprising a frame (203) and a motor (103) arranged on the frame (203), characterized in that: Also includes: A traction rod connecting seat (1031) is arranged on the housing of the motor (103); A vehicle body traction seat (101), used for connecting with the vehicle body; A traction rod (102), one end of which is connected to the traction rod connecting seat (1031), and the other end of which is connected to the vehicle body traction seat (101).

2. The bogie according to claim 1, characterized in that: The traction rod connecting seat (1031) is rotatably connected to the traction rod (102), and the rotation axis is along the vertical direction.

3. The bogie according to claim 2, characterized in that: The traction rod connecting seat (1031) is connected to the traction rod (102) via a traction pin (104), and a flexible sleeve (106) is provided on the outer cover of the traction pin (104).

4. The bogie according to claim 1, characterized in that: The traction rod (102) is connected to the vehicle body traction seat (101) via a traction rod rubber joint (107), and the traction rod rubber joint (107) is arranged in the transverse direction.

5. The bogie according to any one of claims 1 to 4, characterized in that: Also includes: A mounting seat (201) disposed on the frame (203); A frame connection seat (1032) is provided on the housing, and the frame connection seat (1032) is connected to the mounting seat (201); Two swing rods (202), the two swing rods (202) are respectively arranged on both sides of the traction rod connecting seat (1031), and one end of each swing rod (202) is connected to the frame (203), and the other end is connected to the shell.

6. The bogie according to claim 5, characterized in that: The frame connection seat (1032) is rotatably connected to the mounting seat (201), and the rotation axis is in the transverse direction.

7. The bogie according to claim 6, characterized in that The frame connecting seat (1032) is rotatably connected to the mounting seat (201) via a connecting seat rubber joint (105).

8. The bogie according to any one of claims 1 to 4, characterized in that: The traction rod (102) is arranged obliquely relative to the rail surface (300).

9. The bogie according to claim 1, characterized in that: The bogie is a two-axle bogie or a three-axle bogie.

10. A rail vehicle, characterized in that: Comprising a bogie as described in any one of claims 1-9.

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