Traction device and locomotive

Abstract

The invention relates to a traction device and a locomotive, and relates to the technical field of railway vehicles. The traction device comprises a framework, a plurality of driving assemblies and an inclined traction rod. The framework is provided with a plurality of suspension areas which are arranged at intervals in the length direction; the multiple driving assemblies correspond to the multiple suspension areas one to one, the driving assemblies are arranged in the corresponding suspension areas, and the driving assemblies are used for driving a locomotive to move; and one end of the inclined traction rod is rotatably connected with a traction seat of the locomotive, and the other end of the inclined traction rod is rotatably connected with the driving assembly. According to the technical scheme, the problem that a traditional central low-position traction device is not applicable due to the fact that the radial size of a motor of an existing permanent magnet direct drive freight locomotive is too large can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a traction device and a locomotive. Background Art

[0002] Freight electric locomotives are characterized by large axle weight and high power, requiring the bogie adhesion utilization rate to be higher than 90%, and ensuring the maximum traction power of the locomotive through the traction device and suspension system. In recent years, the use of permanent magnet direct-drive freight locomotives has become increasingly widespread. Permanent magnet direct-drive freight locomotives use direct drive wheel set technology, eliminating the traditional transmission gearbox, and simplifying the drive structure.

[0003] Existing freight locomotives usually use a central low-position traction device, but the radial size of the motor of the drive structure of a permanent magnet direct-drive freight locomotive is usually large, basically occupying all the space above the limit below the axle. Therefore, the traditional central low-position traction device is no longer suitable for permanent magnet direct-drive freight locomotives; in addition, adopting the end traction method will increase the lateral additional force of the bogie during curve traction or braking. Summary of the invention

[0004] The embodiments of the present invention provide a traction device and a locomotive, which can solve the problem that the radial size of the motor of the existing permanent magnet direct-drive freight locomotive is too large, resulting in the unsuitability of the traditional central low-position traction device.

[0005] In a first aspect, an embodiment of the present invention provides a traction device, comprising:

[0006] A frame, wherein the frame is provided with a plurality of suspension areas spaced apart along a length direction;

[0007] A plurality of drive assemblies, corresponding to the plurality of suspension areas respectively, the drive assemblies are arranged in the corresponding suspension areas, and the drive assemblies are used to drive the locomotive to move; and

[0008] An oblique traction rod has one end rotatably connected to the traction seat of the locomotive and the other end rotatably connected to the drive assembly.

[0009] In one embodiment, the driving assembly includes a driving motor, a suspension portion and a supporting portion, wherein the suspension portion and the supporting portion are arranged at intervals in the length direction and are respectively located on both sides of the driving motor;

[0010] Wherein, two ends of the suspension part are respectively connected to the frame and the driving motor, and two ends of the support part are respectively connected to the frame and the driving motor.

[0011] In one embodiment, the suspension portion comprises:

[0012] A suspension motor base connected to the frame; and

[0013] A suspension rubber joint is arranged on the suspension motor seat so as to flexibly connect the drive motor to the frame.

[0014] In one embodiment, the support portion includes a plurality of oblique support rods arranged at intervals along the width direction.

[0015] In one embodiment, the oblique traction rod is rotatably connected to the drive motor via a traction pin.

[0016] In one embodiment, the framework comprises:

[0017] Side beams are arranged at intervals in the length direction;

[0018] End beams, respectively located at two ends of the side beam, and two ends of the end beam are respectively connected to the side beam;

[0019] A cross beam, located between the two end beams, with both ends of the cross beam connected to the side beams respectively, and a central through hole is provided at the center of the cross beam;

[0020] The side beam, the end beam and the cross beam together form two suspension areas, one end of the suspension portion away from the drive motor is connected to the cross beam, and one end of the support portion away from the drive motor is connected to the side beam.

[0021] In one embodiment, the drive assembly further comprises:

[0022] an axle, both ends of which are rotatably disposed on the side beams; and

[0023] Wheel sets, respectively arranged at both ends of the axle;

[0024] Wherein, the driving motor is sleeved on the axle, and the driving motor drives the axle to rotate.

[0025] In one embodiment, the drive assembly further comprises:

[0026] A hollow shaft, sleeved on the axle, and the hollow shaft is inserted into the driving motor;

[0027] A first coupling is connected to the driving motor and the hollow shaft respectively;

[0028] The second coupling is connected to the hollow shaft and the axle respectively.

[0029] In one embodiment, the drive motor is a permanent magnet direct drive motor.

[0030] In a second aspect, an embodiment of the present invention provides a locomotive, comprising the traction device as described above.

[0031] Compared with the prior art, the advantage of the embodiments of the present invention is that, by rotatably connecting the inclined traction rod with the drive assembly, the drive assembly is used as a flat traction rod of the central low-position push-pull traction device, and there is no need to set up a flat traction rod separately. On the one hand, it solves the problem that the radial size of the motor of the existing permanent magnet direct-drive freight locomotive is too large, basically occupying all the space above the limit below the axle, resulting in the inability to set a flat traction rod; on the other hand, the traction device of the present invention can still take into account the function of central traction, avoiding the problem that the central low-position push-pull traction device is not applicable due to the excessive size of the motor, so as to obtain the same longitudinal traction effect and lateral dynamic performance as the central low-position traction. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0033] Figure 1 It is a schematic structural diagram of a traction device provided in one embodiment of the present invention.

[0034] Reference numerals:

[0035] 10, frame; 110, suspension area; 120, side beam; 130, end beam; 140, cross beam;

[0036] 20, driving assembly; 210, driving motor; 220, suspension part; 2201, suspension motor seat; 2202, suspension rubber joint; 230, support part; 2301, oblique support rod; 240, axle; 250, wheelset; 260, brake;

[0037] 30. Oblique traction rod;

[0038] 40. Traction pin;

[0039] 50. Traction seat. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] Freight electric locomotives are characterized by large axle weight and high power, requiring the bogie adhesion utilization rate to be higher than 90%, and ensuring the maximum traction power of the locomotive through the traction device and suspension system. In recent years, the use of permanent magnet direct-drive freight locomotives has become increasingly widespread. Permanent magnet direct-drive freight locomotives use direct drive wheel set technology, eliminating the traditional transmission gearbox, and simplifying the drive structure.

[0042] Existing freight locomotives usually use a central low-position traction device, but the radial size of the motor of the drive structure of a permanent magnet direct-drive freight locomotive is usually large, basically occupying all the space above the limit below the axle. Therefore, the traditional central low-position traction device is no longer suitable for permanent magnet direct-drive freight locomotives; in addition, adopting the end traction method will increase the lateral additional force of the bogie during curve traction or braking.

[0043] Embodiment 1

[0044] like Figure 1 As shown, in order to solve the above technical problems, an embodiment of the present invention provides a traction device, including a frame 10, a plurality of drive assemblies 20 and an oblique traction rod 30; the frame 10 is provided with a plurality of suspension areas 110 arranged at intervals along the length direction; the plurality of drive assemblies 20 correspond to the plurality of suspension areas 110 one by one, respectively, and the drive assemblies 20 are arranged in the corresponding suspension areas 110, and the drive assemblies 20 are used to drive the locomotive to move; one end of the oblique traction rod 30 is rotatably connected to the traction seat 50 of the locomotive and the other end is rotatably connected to the drive assembly 20.

[0045] As can be seen from the above, by rotatably connecting the inclined traction rod 30 with the drive assembly 20, the drive assembly 20 is used as a flat traction rod of the central low-position push-pull traction device, and there is no need to set up a flat traction rod separately. On the one hand, it solves the problem that the radial size of the motor of the existing permanent magnet direct-drive freight locomotive is too large, basically occupying all the space above the limit below the axle 240, resulting in the inability to set a flat traction rod; on the other hand, the traction device of the present invention can still take into account the function of central traction, avoiding the problem that the central low-position push-pull traction device is not applicable due to the excessive size of the motor, so as to obtain the same longitudinal traction effect and lateral dynamic performance as the central low-position traction.

[0046] It should be noted that if Figure 1 As shown, the length direction is parallel to the X direction, and the width direction is parallel to the Y direction.

[0047] Embodiment 2

[0048] like Figure 1 As shown, the traction device includes a frame 10, a plurality of drive assemblies 20 and an oblique traction rod 30; the frame 10 is provided with a plurality of suspension areas 110 arranged at intervals along the length direction; the plurality of drive assemblies 20 correspond to the plurality of suspension areas 110 one by one, respectively, and the drive assemblies 20 are arranged in the corresponding suspension areas 110, and the drive assemblies 20 are used to drive the locomotive to move; one end of the oblique traction rod 30 is rotatably connected to the traction seat 50 of the locomotive and the other end is rotatably connected to the drive assembly 20.

[0049] As can be seen from the above, by rotatably connecting the inclined traction rod 30 with the drive assembly 20, the drive assembly 20 is used as a flat traction rod of the central low-position push-pull traction device, and there is no need to set up a flat traction rod separately. On the one hand, it solves the problem that the radial size of the motor of the existing permanent magnet direct-drive freight locomotive is too large, basically occupying all the space above the limit below the axle 240, resulting in the inability to set a flat traction rod; on the other hand, the traction device of the present invention can still take into account the function of central traction, and obtain the same longitudinal traction effect and lateral dynamic performance as the central low-position traction.

[0050] It should be noted that if Figure 1 As shown, the length direction is parallel to the X direction, and the width direction is parallel to the Y direction.

[0051] In some embodiments, the driving assembly 20 includes a driving motor 210, a suspension portion 220 and a supporting portion 230. The suspension portion 220 and the supporting portion 230 are arranged at intervals in the length direction and are respectively located on both sides of the driving motor 210; wherein the two ends of the suspension portion 220 are respectively connected to the frame 10 and the driving motor 210, and the two ends of the supporting portion 230 are respectively connected to the frame 10 and the driving motor 210.

[0052] By using the drive motor 210 as a flat traction rod of the central low-position push-pull traction device, there is no need to set up an additional flat traction rod; the drive motor 210 is installed in the suspension area 110 using the suspension part 220 and the support part 230, providing a structural basis for the installation of the drive motor 210, ensuring that the transmission of the longitudinal traction force is carried out by the suspension part 220 and the support part 230.

[0053] In some embodiments, the suspension portion 220 includes a suspension motor seat 2201 and a suspension rubber joint 2202 ; the suspension motor seat 2201 is connected to the frame 10 ; the suspension rubber joint 2202 is arranged on the suspension motor seat 2201 to enable the drive motor 210 to be flexibly connected to the frame 10 .

[0054] By setting the suspension rubber joint 2202, the drive motor 210 is flexibly connected to the frame 10, so that the drive motor 210 can not only transmit the traction and braking force of the locomotive, but also adapt to the relative rotation between the bogie and the car body, and effectively alleviate the impact vibration between the two; in addition, the suspension motor seat 2201 and the suspension rubber joint 2202 are set, the structure is simple, and it is easy to inspect and maintain.

[0055] It should be noted that the suspension motor base 2201 is connected to the frame 10 including but not limited to by welding.

[0056] In some embodiments, the support portion 230 includes a plurality of oblique support rods 2301 arranged at intervals along the width direction.

[0057] It should be noted that if Figure 1 As shown, the support portion 230 includes two oblique support rods 2301 arranged at intervals along the width direction. The two oblique support rods 2301 and the suspension portion 220 together form a three-point suspension method, ensuring that the transmission of the longitudinal traction force is transmitted through the two oblique support rods 2301 and the motor suspension seat.

[0058] In some embodiments, the oblique traction rod 30 is rotatably connected to the driving motor 210 via a traction pin 40 .

[0059] The traction pin 40 is provided to enable the oblique traction rod 30 to be rotationally connected to the driving motor 210 , which is simple and reliable.

[0060] In some embodiments, the frame 10 includes side beams 120, end beams 130 and cross beams 140; the side beams 120 are arranged at intervals in the length direction; the end beams 130 are respectively located at both ends of the side beams 120, and the two ends of the end beams 130 are respectively connected to the side beams 120; the cross beam 140 is between the two end beams 130, and the two ends of the cross beam 140 are respectively connected to the side beams 120, and a central through hole is provided in the center of the cross beam 140; wherein, the side beams 120, the end beams 130 and the cross beam 140 together form two suspension areas 110, the end of the suspension portion 220 away from the drive motor 210 is connected to the cross beam 140, and the end of the support portion 230 away from the drive motor 210 is connected to the side beam 120.

[0061] The side beams 120 , the end beams 130 and the cross beam 140 are provided to form two suspension areas 110 spaced apart in the length direction. A driving motor 210 is provided in each suspension area 110 , thereby forming a two-axis drive.

[0062] In some embodiments, the drive assembly 20 also includes an axle 240 and a wheelset 250; the two ends of the axle 240 are rotatably disposed on the side beam 120; the wheelset 250 is respectively disposed at the two ends of the axle 240; wherein the drive motor 210 is sleeved on the axle 240, and the drive motor 210 drives the axle 240 to rotate.

[0063] In some embodiments, the drive assembly 20 also includes a hollow shaft, a first coupling and a second coupling; the hollow shaft is sleeved on the axle 240, and the hollow shaft is passed through the drive motor 210; the first coupling is respectively connected to the drive motor 210 and the hollow shaft; the second coupling is respectively connected to the hollow shaft and the axle 240.

[0064] The hollow shaft is driven to rotate by the driving motor 210 , and the torque of the driving motor 210 is transmitted to the axle 240 and the wheelset 250 through the hollow shaft, the first coupling and the second coupling, thereby driving the wheelset 250 to rotate.

[0065] It should be noted that the drive assembly 20 also includes a force transmission seat arranged on the axle 240, the first coupling and the second coupling are respectively located at the two ends of the hollow shaft, the first coupling and the second coupling can be flexible couplings, for example, the first coupling and the second coupling are both laminated couplings, the laminated coupling includes a connected transmission disc and metal laminates, the transmission disc of the first coupling is connected to the inner sleeve of the drive motor 210, the metal laminates of the first coupling are connected to the hollow shaft, the transmission disc of the second coupling is connected to one end of the hollow shaft away from the transmission disc of the first coupling, and the metal laminates of the second coupling are connected to the force transmission seat. Thus, the wheelset 250 is directly driven, the traditional transmission gearbox is eliminated, and the structure of the drive assembly 20 is simplified.

[0066] It should also be noted that the drive assembly 20 also includes a brake 260 and a brake disc. The brake disc is mounted on the wheelset 250, and the brake 260 is connected to the brake disc and the end beam 130 respectively.

[0067] In some embodiments, the drive motor 210 is a permanent magnet direct drive motor.

[0068] It should be noted that the drive motor 210 is a hollow shaft permanent magnet drive motor.

[0069] Embodiment 3

[0070] An embodiment of the present invention further provides a locomotive, comprising a traction device according to any embodiment of the present invention, and thus having all the technical effects brought about by the technical solutions of the above embodiments.

[0071] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A traction device, characterized in that: include: A frame, wherein the frame is provided with a plurality of suspension areas spaced apart along a length direction; A plurality of drive assemblies, corresponding to the plurality of suspension areas respectively, the drive assemblies are arranged in the corresponding suspension areas, and the drive assemblies are used to drive the locomotive to move; as well as An oblique traction rod has one end rotatably connected to the traction seat of the locomotive and the other end rotatably connected to the drive assembly.

2. The traction device according to claim 1, characterized in that: The driving assembly comprises a driving motor, a hanging part and a supporting part, wherein the hanging part and the supporting part are arranged at intervals in the length direction and are respectively located on both sides of the driving motor; Wherein, two ends of the suspension part are respectively connected to the frame and the driving motor, and two ends of the support part are respectively connected to the frame and the driving motor.

3. The traction device according to claim 2, characterized in that: The suspension part comprises: A suspension motor base connected to the frame; and A suspension rubber joint is arranged on the suspension motor seat so as to flexibly connect the drive motor to the frame.

4. The traction device according to claim 2, characterized in that: The support portion includes a plurality of oblique support rods arranged at intervals along a width direction.

5. The traction device according to any one of claims 1 to 4, characterized in that: The oblique traction rod is rotatably connected to the driving motor via a traction pin.

6. The traction device according to any one of claims 1 to 4, characterized in that: The framework includes: Side beams are arranged at intervals in the length direction; end beams, respectively located at two ends of the side beam, and the two ends of the end beam are respectively connected to the side beam; and A cross beam, located between the two end beams, with both ends of the cross beam connected to the side beams respectively, and a central through hole is provided at the center of the cross beam; The side beam, the end beam and the cross beam together form two suspension areas, one end of the suspension portion away from the drive motor is connected to the cross beam, and one end of the support portion away from the drive motor is connected to the side beam.

7. The traction device according to claim 6, characterized in that: The drive assembly also includes: an axle, both ends of which are rotatably disposed on the side beams; and Wheel sets, respectively arranged at both ends of the axle; Wherein, the driving motor is sleeved on the axle, and the driving motor drives the axle to rotate.

8. The traction device according to claim 7, characterized in that: The drive assembly also includes: A hollow shaft, sleeved on the axle, and the hollow shaft is inserted into the driving motor; A first coupling is connected to the driving motor and the hollow shaft respectively; and The second coupling is connected to the hollow shaft and the axle respectively.

9. The traction device according to claim 8, characterized in that: The drive motor is a permanent magnet direct drive motor.

10. A locomotive, characterized in that: Comprising the traction device according to any one of claims 1-9.

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