Drive unit, assembly method, bogie and rail vehicle

Abstract

This invention relates to the field of rail vehicle technology, and more particularly to a drive device, assembly method, bogie, and rail vehicle. The drive device includes: a drive device body; a first assembly part on one side of the drive device body; and a second assembly part on the other side of the drive device body; a first positioning node located in the first assembly part and used for connection to the frame; and a second positioning node located in the second assembly part and used for connection to the axle. This invention uses the drive device body, the first positioning node, and the second positioning node to transmit the load between the frame and the axle bushing. The motor can bear a certain load, ensuring a reasonable layout of the frame and bushing connected to the motor, reducing the space occupied by the built-in bogie. Furthermore, the use of positioning nodes and assembly parts for connection ensures stability and simplifies the wheelset positioning structure.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and in particular to a drive device, assembly method, bogie, and rail vehicle. Background Technology

[0002] Currently, with increasingly stringent requirements for energy conservation, emission reduction, and operating speed in rail vehicles, lightweight running gear is a crucial direction for the development of the rail transit industry. During the development of integrated bogies, the internal arrangement of the drive unit faces space constraints. The motor and gearbox must be located in the middle of the integrated bogie frame, transferring the car body weight and load to the wheelsets through the axle box, lubricating the axle journals, reducing friction, and lowering running resistance. This results in inefficient space utilization and a large footprint. However, high-speed rail vehicle motors need to meet high starting acceleration requirements, necessitating a significant increase in dimensional space.

[0003] In existing technologies, the connection between the drive unit and the frame is mostly achieved by bolt connection or hanger connection. The axle suspension is connected to the frame with hangers, which cannot achieve lateral positioning of the motor. This has limited effect on simplifying the bogie structure. Especially for bogies with high space requirements, there are problems such as unreasonable space utilization, large space occupation, and the drive unit being unable to bear lateral loads. Summary of the Invention

[0004] This invention provides a drive device, assembly method, bogie, and rail vehicle to solve the defects of existing bogies, such as unreasonable space utilization, large space occupation, and the inability of the drive device to bear lateral loads.

[0005] This invention provides a driving device, comprising:

[0006] The drive unit body has a first assembly part on one side and a second assembly part on the other side.

[0007] A first positioning node is located at the first assembly part and is used to connect with the frame.

[0008] The second positioning node is located in the second assembly part and is used to connect with the axle.

[0009] According to the driving device provided by the present invention, the axial direction of the first positioning node is arranged toward the frame, and the axial direction of the second positioning node is parallel to the extension direction of the axle.

[0010] According to the driving device provided by the present invention, the first assembly part includes:

[0011] A positioning boss is provided on the outer shell of the drive device body;

[0012] The first fastener, wherein the positioning boss is limited to the first positioning node through the first fastener.

[0013] According to the driving device provided by the present invention, the positioning boss includes: a cone and a positioning post disposed on the cone, the positioning post being inserted into the first positioning node;

[0014] The positioning post has an assembly hole, and the first fastener passes through the first positioning node and is inserted into the assembly hole to limit the first positioning node between the positioning boss and the frame.

[0015] According to the driving device provided by the present invention, the first positioning node has a conical rubber layer on both the side near the positioning boss and the side away from the positioning boss, and the outer side of the first positioning node with the maximum outer diameter is nested in the through hole on the frame.

[0016] According to the driving device provided by the present invention, the first positioning node is an annular rubber block, which is positioned between the truncated cone and the through hole on the frame.

[0017] According to the driving device provided by the present invention, the second assembly part includes:

[0018] Multiple mounting arms, each mounting arm is disposed on the outer shell of the drive device body, and each mounting arm is provided with a corresponding second positioning node;

[0019] The second fastener connects the second positioning node to the bushing on the outside of the axle.

[0020] According to the driving device provided by the present invention, each of the mounting arms has a positioning hole at one end of its housing away from the driving device body, and the second positioning node is nested in the positioning hole.

[0021] According to the driving device provided by the present invention, the second assembly part further includes: a plurality of mounting blocks, the mounting blocks being fixed on both sides of each of the second positioning nodes, and mounting holes being formed on the mounting blocks, the mounting blocks being connected to the bushing through the mounting holes.

[0022] According to the driving device provided by the present invention, the axial direction of the mounting hole is perpendicular to the extension direction of the mounting arm; or, the axial direction of the first part of the mounting hole is perpendicular to the extension direction of the mounting arm, and the axial direction of the second part of the mounting hole is parallel to the extension direction of the mounting arm.

[0023] The present invention also provides a method for assembling a drive device.

[0024] The driving device includes: a driving device body, multiple mounting blocks and multiple positioning nodes. The driving device body is provided with multiple mounting arms, and each mounting arm is provided with a corresponding positioning node. The mounting blocks are fixed on both sides of each positioning node, and mounting holes are formed on the mounting blocks. The mounting blocks are connected to the bushings through the mounting holes.

[0025] The assembly method of the drive device includes: when the axial direction of the mounting hole is perpendicular to the extension direction of the mounting arm, adjusting shims by adding or removing them to make the mounting block fit against the bushing, and simultaneously fastening all the positioning nodes to the bushing; or,

[0026] When the axial direction of the first part of the mounting hole is perpendicular to the extension direction of the mounting arm, and the axial direction of the second part of the mounting hole is parallel to the extension direction of the mounting arm, first fasten the positioning node corresponding to the first part of the mounting hole to the bushing, and then fasten the positioning node corresponding to the second part of the mounting hole to the bushing.

[0027] The present invention also provides a bogie, comprising: the drive device described above.

[0028] The present invention also provides a rail vehicle, comprising: the drive device or bogie described above.

[0029] This invention provides a drive device comprising: a drive device body, a first positioning node, and a second positioning node. A first assembly portion is provided on one side of the drive device body, and a second assembly portion is provided on the other side of the drive device body. The first positioning node is located in the first assembly portion and is used for connection with a frame. The second positioning node is located in the second assembly portion and is used for connection with an axle. This drive device, employing a drive device body, a first positioning node, and a second positioning node, transmits the load between the frame and the axle bushing. The motor can bear a certain load, ensuring a reasonable layout of the frame and bushing connected to the motor, reducing the space occupied by the built-in bogie. Furthermore, the use of positioning nodes and assembly portions ensures a stable connection and simplifies the wheelset positioning structure.

[0030] Furthermore, the present invention provides an assembly method for a drive device, which provides an assembly method for the drive device of the present invention, and can be assembled for different application scenarios, with high flexibility.

[0031] Furthermore, the bogie provided by the present invention includes the drive device in the above embodiments of the present invention, and therefore has the same advantages as described above.

[0032] Furthermore, the present invention provides a rail vehicle that includes the drive unit or bogie in the above embodiments of the present invention, and therefore has the same advantages as described above. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the driving device with a conical rubber layer provided in one embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of the structure of the driving device using a circular rubber block provided in one embodiment of the present invention.

[0036] Figure 3 This is a schematic diagram of a drive device with three mounting arms provided in one embodiment of the present invention.

[0037] Figure 4 This is a schematic diagram of a drive device with four mounting arms provided in one embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of the structure of the driving device provided in one embodiment of the present invention, using the first assembly method.

[0039] Figure 6 This is a schematic diagram of the structure of the driving device provided in one embodiment of the present invention, which adopts the second assembly method.

[0040] Figure label:

[0041] 100: Drive unit body; 101: Positioning boss; 1011: Conical frustum; 1012: Positioning post; 102: Mounting arm; 1021: Positioning hole; 200: First positioning node; 201: Conical rubber layer; 202: Circular rubber block; 300: Second positioning node; 400: Mounting block; 500: Frame; 600: Bushing. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0043] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0045] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] The following is combined Figures 1 to 6 A driving device according to the present invention is described. The driving device includes: a driving device body 100, a first positioning node 200, and a second positioning node 300.

[0048] The drive unit body 100 has a first assembly part on one side and a second assembly part on the other side; a first positioning node 200 is provided in the first assembly part and is used to connect with the frame 500; a second positioning node 300 is provided in the second assembly part and is used to connect with the axle.

[0049] Specifically, the drive unit body 100 can be an electric motor. Depending on the actual situation of the running system and the rail vehicle, different types, specifications and functions of electric motors can be used. This invention is not limited to electric motors with specific models and specifications.

[0050] Taking the drive unit body 100 as an example, which is a motor, both the first assembly part and the second assembly part are mounted on the motor housing, and are respectively mounted on opposite sides of the motor housing. Figure 1 In the structure shown, the first assembly part is installed on the right side of the motor housing, and the second assembly part is installed on the left side of the motor housing. This layout ensures that the frame 500 and bushing 600 connected to the motor can be rationally arranged, reducing the space occupied by the built-in bogie.

[0051] The motor and frame 500 are positioned and connected via a first positioning node 200 and a first assembly part. The motor and axle bushing 600 are positioned and connected via a second positioning node 300 and a second assembly part. This layout allows for the mutual transfer of load between the bushing 600 and frame 500 through the motor, first positioning node 200, and second positioning node 300. For example, the load on the frame 500 is sequentially transferred to the motor via the first positioning node 200, and then to the bushing 600 via the second positioning node 300. Conversely, the load on the bushing 600 can also be sequentially transferred to the motor via the second positioning node 300, and then to the frame 500 via the first positioning node 200. Furthermore, the use of positioning nodes and assembly parts ensures a stable connection and simplifies the wheelset positioning structure.

[0052] Specifically, both the first positioning node 200 and the second positioning node 300 mentioned above can be flexible nodes, such as rubber nodes. The first assembly part and the second assembly part can adopt corresponding circular hole structures to assemble the first positioning node 200 and the second positioning node 300. Using rubber nodes provides shock absorption, a more stable connection, and the ability to bear loads. Furthermore, depending on the installation direction and form of the first positioning node 200 and the second positioning node 300, the motor can bear loads in a single direction, such as lateral loads.

[0053] Regarding the number of first positioning nodes 200 and second positioning nodes 300: only one first positioning node 200 is set to transmit and bear the lateral load; to ensure stable motor connection, multiple second positioning nodes 300 are set.

[0054] This invention provides a driving device comprising: a driving device body 100, a first positioning node 200, and a second positioning node 300. A first assembly portion is provided on one side of the driving device body 100, and a second assembly portion is provided on the other side. The first positioning node 200 is located in the first assembly portion and is used to connect with a frame 500. The second positioning node 300 is located in the second assembly portion and is used to connect with an axle. This invention provides a driving device that uses the driving device body 100, the first positioning node 200, and the second positioning node 300 to transmit the load between the frame 500 and the axle bushing 600. The motor can bear a certain load, ensuring that the frame 500 and the axle bushing 600 connected to the motor can be rationally arranged, reducing the space occupied by the built-in bogie. Furthermore, the use of positioning nodes and assembly portions ensures a stable connection and simplifies the wheelset positioning structure.

[0055] In one embodiment of the present invention, the axial direction of the first positioning node 200 is oriented towards the frame 500, and the axial direction of the second positioning node 300 is parallel to the extension direction of the axle. Generally, the axle and the bushing 600 are arranged horizontally laterally, thus the axial direction of the second positioning node 300 is also horizontally laterally oriented, while the axial direction of the first positioning node 200 is oriented towards the frame 500, thus the axial direction of the first positioning node 200 is horizontally longitudinally oriented. Therefore, in this embodiment, the first positioning node 200 and the second positioning node 300 can be considered to be perpendicular to each other. With the above arrangement, by utilizing the cooperation of the first positioning node 200, the second positioning node 300 and the motor, lateral loads can be borne. The first positioning node 200 and the second positioning node 300 can simultaneously bear the weight of the motor and transmit loads between the frame 500, the motor and the bushing 600.

[0056] In one embodiment of the present invention, the first assembly part includes a positioning boss 101 and a first fastener. The positioning boss 101 is disposed on the outer shell of the drive device body 100; the positioning boss 101 is limited and connected to the first positioning node 200 by the first fastener. Specifically, the positioning boss 101 is located on the right side of the motor housing, and the first positioning node 200 is fastened to the positioning boss 101 by the first fastener, thus limiting the first positioning node 200 on the positioning boss 101. The positioning boss 101 is connected to the frame 500 through the first positioning node 200. The first positioning node 200 is in the form of an elastic node, which can bear loads and has a shock-absorbing function.

[0057] In one embodiment of the present invention, the positioning boss 101 includes a truncated cone 1011 and a positioning post 1012 disposed on the truncated cone 1011. The positioning post 1012 is inserted into the first positioning node 200. The positioning post 1012 has an assembly hole. A first fastener passes through the first positioning node 200 and is inserted into the assembly hole to limit the first positioning node 200 between the positioning boss 101 and the frame 500. Specifically, the truncated cone 1011 is fixed to the outer wall of the motor housing. The positioning post 1012 is mounted on the truncated cone 1011. The outer diameter of the positioning post 1012 is smaller than the outer diameter of the truncated cone 1011. The positioning post 1012 can be inserted into the first positioning node 200, thereby limiting the first positioning node 200. The first fastener can pass through the first positioning node 200 sequentially until it is inserted into the assembly hole inside the positioning post 1012 to ensure stable assembly between the first positioning node 200 and the positioning boss 101. Preferably, the first fastener can be a bolt, and the first positioning node 200 is provided with a circular through hole for bolt insertion. The assembly hole inside the positioning post 1012 is a bolt hole to cooperate with the bolt to achieve a fastening connection.

[0058] In one embodiment of the present invention, the first positioning node 200 has a conical rubber layer 201 on both the side near the positioning boss 101 and the side away from the positioning boss 101, and the outer side of the first positioning node 200 with its maximum outer diameter is nested in a through hole on the frame 500. Figure 1 In the structure shown, the first positioning node 200 of this embodiment adopts a rubber node structure with a conical rubber layer 201. The outer diameter is largest at the center along its axial direction, gradually decreasing towards the left and right sides. The position with the largest outer diameter is nested into the through hole on the frame 500. In this embodiment, due to the structure of its conical rubber layer 201, it can move elastically in both the radial and axial directions, resulting in more stable lateral force transmission and lower installation requirements. This conical rubber layer 201 can not only bear the lateral load of the vehicle but also the inertial load generated by the vertical vibration of the motor. The conical rubber layer 201 used in this embodiment has stronger shock absorption capacity, improving safety and stability.

[0059] In one embodiment of the present invention, the first positioning node 200 is an annular rubber block 202, which is positioned between the frustum 1011 and the through hole on the frame 500. Figure 2 In the structure shown, the first positioning node 200 of this embodiment adopts a circular rubber block 202, which is sandwiched between the cone 1011 and the through hole of the frame 500. Compared with the structure of the conical rubber layer 201 in the above embodiment, this method requires pre-compression by applying bolt torque during installation. This method has higher requirements for bolt strength and assembly, but the structure of the circular rubber block 202 is simpler and easier to process.

[0060] In one embodiment of the present invention, the second assembly includes a plurality of mounting arms 102 and a second fastener. Each mounting arm 102 is disposed on the housing of the drive unit body 100, and each mounting arm 102 has a corresponding second positioning node 300. The second positioning node 300 is connected to the bushing 600 on the outer side of the axle via the second fastener. In this embodiment, multiple mounting arms 102 are provided on the left side of the motor housing for mounting the corresponding second positioning nodes 300. The second positioning nodes 300 are fastened to the bushing 600 via the second fastener, limiting the second positioning nodes 300 on the corresponding mounting arms 102. The mounting arms 102 are connected to the bushing 600 via the second positioning nodes 300. The second positioning nodes 300 are in the form of elastic nodes, which can bear loads and also have a shock-absorbing function.

[0061] Furthermore, the number of mounting arms 102 can be selected according to the actual situation, for example: Figure 4In the structure shown, four mounting arms 102 and four second positioning nodes 300 are respectively provided, so that the motor and the bushing 600 are positioned at four corners; for example: when... Figure 3 In the structure shown, three mounting arms 102 and three second positioning nodes 300 are respectively set, which reduces the assembly requirements while ensuring the stability of the motor.

[0062] In one embodiment of the present invention, each mounting arm 102 has a positioning hole 1021 at one end away from the outer casing of the drive device body 100, and a second positioning node 300 is nested in the positioning hole 1021. In this embodiment, one end of the mounting arm 102 is fixedly connected to the motor housing, and the other end has a positioning hole 1021. The axial direction of the positioning hole 1021 is parallel to the extending direction of the bushing 600, and the second positioning node 300 is nested and installed in the positioning hole 1021.

[0063] In one embodiment of the present invention, the second assembly part further includes: a plurality of mounting blocks 400, which are fixed on both sides of each second positioning node 300, and mounting holes are formed on the mounting blocks 400. The mounting blocks 400 are connected to the bushing 600 through the mounting holes. Specifically, mounting blocks 400 are fixedly mounted on both sides of the second positioning node 300, and the mounting blocks 400 are connected to the bushing 600 through their mounting holes. Preferably, bolts are used to fasten the mounting blocks 400 to the bushing 600, and the mounting holes on the mounting blocks 400 are threaded holes. In this embodiment, the mounting blocks 400 are connected to the bushing 600 on both sides of the second positioning node 300 to ensure the stability of the connection with the bushing 600.

[0064] In one embodiment of the invention, the axial direction of the mounting hole is perpendicular to the extending direction of the mounting arm 102; or, the axial direction of the first portion of the mounting hole is perpendicular to the extending direction of the mounting arm 102, and the axial direction of the second portion of the mounting hole is parallel to the extending direction of the mounting arm 102. Figure 5 As shown, in the first assembly method, the axial direction of the mounting hole is perpendicular to the extension direction of the mounting arm 102. In this method, when the motor is installed with the bushing 600, all mounting arms 102 and the second positioning node 300 need to be tightened simultaneously. The disadvantage of this installation method is that due to the manufacturing tolerances of the mounting arms 102 and the second positioning node 300, adjusting shims need to be added to the mounting surfaces of the second positioning node 300 and the bushing 600 during installation to prevent large internal forces between the nodes after installation. Figure 6 As shown, in the second assembly method, the axial direction of the first part of the mounting hole (that is, the upper mounting hole) is perpendicular to the extension direction of the mounting arm 102, and the axial direction of the second part of the mounting hole (that is, the lower mounting hole) is parallel to the extension direction of the mounting arm 102. In this installation method, the upper node can be tightened first, and then the lower node can be tightened. There are no disadvantages of the first installation method.

[0065] The present invention also provides an assembly method for a drive device, which can be applied to the assembly method of the drive device in the above embodiments of the present invention. The drive device includes: a drive device body 100 (i.e., a motor), a plurality of mounting blocks 400 and a plurality of positioning nodes (i.e., the second positioning node 300 in the above embodiments). The drive device body 100 is provided with a plurality of mounting arms, and each mounting arm 102 is provided with a corresponding positioning node. The mounting blocks 400 are fixed on both sides of each positioning node, and mounting holes are formed on the mounting blocks 400. The mounting blocks 400 are connected to the bushing 600 through the mounting holes.

[0066] The assembly method of the aforementioned drive device includes:

[0067] When the axis of the mounting hole is perpendicular to the extension direction of the mounting arm 102 (i.e., using the above-mentioned method) Figure 5 In the first assembly method of the structure shown, the mounting block 400 is brought into contact with the bushing 600 by adding or removing adjusting shims, and all positioning nodes are simultaneously tightened to the bushing 600; or,

[0068] When the axial direction of the first mounting hole is perpendicular to the extension direction of the mounting arm 102, and the axial direction of the second mounting hole is parallel to the extension direction of the mounting arm 102 (i.e., using the method described above) Figure 6 (In the second assembly method of the structure shown), first, the positioning node corresponding to the first part of the mounting hole is fastened to the bushing 600, and then the positioning node corresponding to the second part of the mounting hole is fastened to the bushing 600.

[0069] Based on the structure of the aforementioned driving device, the present invention can employ different assembly methods. Specifically, based on the different assembly methods of the mounting block 400 and the mounting arm 102, different assembly methods are provided, which can be assembled for different application scenarios, offering high flexibility.

[0070] The present invention also provides a bogie. This bogie includes the drive unit described in the above embodiments of the present invention.

[0071] The bogie provided by the present invention includes the drive device in the above embodiments of the present invention, and therefore has the same advantages as described above.

[0072] In one embodiment of the present invention, the frame 500 that mates with the drive unit body 100 is provided with a through hole, preferably a circular through hole, through which the aforementioned first positioning node 200, i.e., the rubber node, is installed. This through hole is located in the middle of the crossbeam of the frame 500, and positioning seats for mounting longitudinal tie rods are machined on both sides. The frame is connected to the rubber node through the through hole, while the positioning seats on both sides provide the mounting positions for the longitudinal tie rods. Therefore, with the frame arranged as described above, the motor load can be decomposed, with the rubber node bearing the lateral load and the longitudinal tie rod bearing the longitudinal load.

[0073] In the specific implementation of the above embodiment, the rubber node is assembled into the circular through hole, the positioning post 1012 of the positioning boss 101 is inserted into the rubber node, and bolts are used to pass through the rubber node and fasten it to the positioning boss 101 in sequence, so as to stably connect the rubber node and the positioning boss 101.

[0074] In one embodiment of the present invention, the positioning seat has a first protrusion and a second protrusion arranged sequentially from top to bottom along the height direction of the frame. The end faces of the first and second protrusions form mounting surfaces for assembling the longitudinal tie rod. In this embodiment, the second positioning node takes the form of a positioning seat to achieve positioning and installation of one end of the longitudinal tie rod to the frame. Specifically, the positioning seat consists of a first protrusion and a second protrusion, the end faces of which form mounting surfaces that connect with the longitudinal tie rod. Positioning and assembly of one end of the longitudinal tie rod can be achieved through these two mounting surfaces. Furthermore, positioning and installing the longitudinal tie rod through the mounting surfaces of the two protrusions (i.e., the first and second protrusions) also ensures the positioning stability of the longitudinal tie rod.

[0075] In one embodiment of the present invention, a mounting groove is formed between the first protrusion and the second protrusion, the mounting groove being used to accommodate the annular portion of the longitudinal tie rod. Specifically, since one end of the longitudinal tie rod has an annular portion structure, in this embodiment, by providing a mounting groove between the first protrusion and the second protrusion, the annular portion of the longitudinal tie rod is placed within the mounting groove. This mounting groove, on the one hand, can avoid the annular portion of the longitudinal tie rod, saving space; on the other hand, during assembly, the mounting groove is easy to position with the longitudinal tie rod, facilitating installation.

[0076] In one embodiment of the invention, a mounting hole is formed on the mounting surface. A fastener passes through one end of the longitudinal tie rod and is inserted into the mounting hole to fix one end of the longitudinal tie rod to the mounting surface. Preferably, a bolt fastener is used. The mounting hole formed on the mounting surface is a threaded hole. The bolt fastener passes through one end of the longitudinal tie rod in sequence and is screwed into the threaded hole on the mounting surface, thereby fixing one end of the longitudinal tie rod to the mounting surface.

[0077] The present invention also provides a rail vehicle. This rail vehicle includes the drive device described in the above embodiments of the present invention.

[0078] Furthermore, the present invention provides a rail vehicle that includes the drive device described in the above embodiments of the present invention, and therefore has the same advantages as described above.

[0079] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A driving device, characterized in that, include: The drive device body (100) has a first mounting part on one side and a second mounting part on the other side. The first positioning node (200) is located in the first assembly part and is used to connect with the frame (500); The second positioning node (300) is located in the second assembly part and is used to connect with the axle; The second assembly part includes: Multiple mounting arms (102) are provided on the outer shell of the drive device body (100), and each mounting arm (102) is provided with a second positioning node (300). The second fastener, the second positioning node (300) is connected to the bushing (600) on the outside of the axle through the second fastener; The second assembly part further includes: a plurality of mounting blocks (400), the mounting blocks (400) being fixed on both sides of each of the second positioning nodes (300), and mounting holes being formed on the mounting blocks (400), the mounting blocks (400) being connected to the bushing (600) through the mounting holes.

2. The driving device according to claim 1, characterized in that, The first positioning node (200) is oriented axially toward the frame (500), and the second positioning node (300) is axially parallel to the extension direction of the axle.

3. The driving device according to claim 1, characterized in that, The first assembly part includes: A positioning boss (101) is provided on the outer shell of the drive device body (100); The first fastener, wherein the positioning boss (101) is limited to the first positioning node (200) by means of the first fastener.

4. The driving device according to claim 3, characterized in that, The positioning boss (101) includes: a cone (1011) and a positioning post (1012) disposed on the cone (1011), the positioning post (1012) being inserted into the first positioning node (200); The positioning post (1012) is provided with an assembly hole. The first fastener passes through the first positioning node (200) and is inserted into the assembly hole to limit the first positioning node (200) between the positioning boss (101) and the frame (500).

5. The driving device according to claim 3, characterized in that, The first positioning node (200) has a conical rubber layer (201) on both the side near the positioning boss (101) and the side away from the positioning boss (101), and the outer side of the first positioning node (200) with the maximum outer diameter is nested in the through hole on the frame (500).

6. The driving device according to claim 4, characterized in that, The first positioning node (200) is a circular rubber block (202), which is positioned between the cone (1011) and the through hole on the frame (500).

7. The driving device according to claim 1, characterized in that, Each of the mounting arms (102) has a positioning hole (1021) at one end away from the housing of the drive device body (100), and the second positioning node (300) is nested in the positioning hole (1021).

8. The driving device according to claim 1, characterized in that, The axial direction of the mounting hole is perpendicular to the extension direction of the mounting arm (102); or, The axial direction of the mounting hole in the first part is perpendicular to the extension direction of the mounting arm (102), and the axial direction of the mounting hole in the second part is parallel to the extension direction of the mounting arm (102).

9. A method for assembling a drive device, characterized in that, The driving device includes: The drive device body (100), multiple mounting blocks (400) and multiple positioning nodes are provided. The drive device body (100) is provided with multiple mounting arms, and each mounting arm (102) is provided with a corresponding positioning node. The mounting blocks (400) are fixed on both sides of each positioning node, and mounting holes are formed on the mounting blocks (400). The mounting blocks (400) are connected to the bushing (600) through the mounting holes. The assembly method of the drive device includes: When the axial direction of the mounting hole is perpendicular to the extension direction of the mounting arm (102), the mounting block (400) is made to fit against the bushing (600) by adding or removing adjusting shims, and all the positioning nodes are simultaneously fastened to the bushing (600); or, When the axial direction of the first part of the mounting hole is perpendicular to the extension direction of the mounting arm (102), and the axial direction of the second part of the mounting hole is parallel to the extension direction of the mounting arm (102), first fasten the positioning node corresponding to the first part of the mounting hole to the bushing (600), and then fasten the positioning node corresponding to the second part of the mounting hole to the bushing (600).

10. A bogie, characterized in that, include: The driving device according to any one of claims 1 to 8.

11. A rail vehicle, characterized in that, include: The drive unit according to any one of claims 1 to 8 or the bogie according to claim 10.

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