Bogies and rail vehicles

Abstract

This invention relates to the field of rail vehicle technology, and more particularly to a bogie and a rail vehicle. The bogie includes: a frame with a first mounting portion and a second mounting portion; a drive unit, one end of which is positioned and connected to the first mounting portion via a mounting node, and the other end of which is positioned and connected to an axle sleeve; and a longitudinal tie rod, one end of which is positioned and connected to the second mounting portion, and the other end of which is positioned and connected to the axle sleeve. The bogie and rail vehicle provided by this invention eliminate the traditional axle box, optimizing mechanical performance by distributing the load of the original tie rod to the node position of the drive unit. The longitudinal tie rod only provides longitudinal positioning for the vehicle. Eliminating the axle box allows for efficient use of space in an integrated bogie design, resulting in a smaller footprint. Furthermore, the distributing of the positioning mechanism improves the structural stability of the bogie and facilitates the installation and removal of wheelsets.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and more particularly to a bogie and a 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 significant space. Therefore, minimizing the size of other components on the bogie while meeting positioning and installation requirements is a pressing issue that needs to be addressed. Summary of the Invention

[0003] This invention provides a bogie and a rail vehicle to solve the defects of the existing built-in bogie in terms of unreasonable space utilization and large space occupation.

[0004] This invention provides a bogie, comprising:

[0005] A frame, wherein a first mounting part and a second mounting part are provided on the frame;

[0006] A driving device, one end of which is positioned and connected to the first mounting part via a mounting node, and the other end of which is positioned and connected to a bushing;

[0007] A longitudinal tie rod, one end of which is positioned and connected to the second mounting part, and the other end of which is positioned and connected to the bushing.

[0008] According to the bogie provided by the present invention, the first mounting part includes: a first positioning node, the first positioning node being located at the geometric center position along the width direction of the frame; the mounting node is a rubber node, and the first positioning node is used to connect with the positioning boss on the drive device through the rubber node.

[0009] According to the bogie provided by the present invention, the rubber node is press-fitted into the first positioning node, and the positioning boss on the drive device is inserted into the rubber node.

[0010] The bogie provided by the present invention further includes: a first fastener, which is inserted into the rubber node and locked and fixed with the positioning boss on the drive device to fix the rubber node in the first positioning node.

[0011] According to the bogie provided by the present invention, the first positioning node includes a mounting hole, and the axial direction of the mounting hole is perpendicular to the width direction of the frame, and the rubber node is pressed into the first positioning node along the axial direction of the first positioning node, and the positioning boss on the drive device is inserted into the rubber node along the axial direction of the rubber node.

[0012] According to the bogie provided by the present invention, the second mounting part includes a plurality of second positioning nodes, and the second positioning nodes are respectively located on both sides of the first mounting part and are arranged in a centrally symmetrical manner with the first mounting part as the midpoint of symmetry.

[0013] According to the bogie provided by the present invention, each second positioning node includes: a positioning seat, the positioning seat having a first protrusion and a second protrusion arranged sequentially from top to bottom along the height direction of the frame; wherein the end faces of the first protrusion and the second protrusion form a mounting surface for assembling the longitudinal tie rod.

[0014] According to the bogie provided by 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.

[0015] The bogie provided by the present invention further includes: a second fastener, wherein a mounting hole is formed on the mounting surface, the second fastener passing through one end of the longitudinal tie rod and inserted into the mounting hole to fix one end of the longitudinal tie rod to the mounting surface.

[0016] The bogie provided by the present invention further includes a third fastener, wherein the other end of the longitudinal tie rod is connected to the bushing via the third fastener.

[0017] The bogie provided by the present invention further includes: a composite material coupling, the composite material coupling being connected between the drive unit and the axle.

[0018] According to the bogie provided by the present invention, the composite material coupling includes a carbon fiber coupling.

[0019] The present invention also provides a rail vehicle, comprising: the bogie described above.

[0020] This invention provides a bogie comprising: a frame, a drive unit, and a longitudinal tie rod. The frame has a first mounting portion and a second mounting portion. The first mounting portion is used to mount the drive unit, and the second mounting portion is used to mount the longitudinal tie rod. Specifically, one end of the drive unit is positioned and connected to the first mounting portion via a mounting node, and the other end of the drive unit is positioned and connected to a bushing. One end of the longitudinal tie rod is positioned and connected to the second mounting portion, and the other end of the longitudinal tie rod is positioned and connected to a bushing. This invention, through structural improvements to the frame, eliminates the traditional axle box, optimizes mechanical performance, and distributes the load of the original tie rod to the node positions of the drive unit. The node simultaneously bears the weight of the drive unit and the force transmission between the drive unit and the frame. Simultaneously, the longitudinal tie rod only provides longitudinal positioning for the vehicle. Because the axle box is eliminated, for an integrated bogie design, space is used more efficiently, occupying less space. Furthermore, the split positioning method results in higher structural stability of the bogie and facilitates the installation or removal of wheelsets.

[0021] Furthermore, the present invention also provides a rail vehicle that, because it includes the bogie of the above embodiments of the present invention, has the same advantages as described above. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a schematic diagram of the overall structure of the bogie provided in one embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure provided in one embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the driving device provided in one embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the connection between the second mounting part, the longitudinal tie rod, and the bushing provided in one embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the connection between the first mounting part, the driving device and the bushing provided in one embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram of the composite material coupling provided in one embodiment of the present invention.

[0029] Figure label:

[0030] 100. Frame; 101. First mounting part; 102. Second mounting part; 1021. Positioning seat; 1022. First protrusion; 1023. Second protrusion; 1024. Mounting groove; 200. Drive device; 201. Positioning boss; 202. Mounting arm; 300. Longitudinal tie rod; 400. Mounting node; 500. First fastener; 600. Second fastener; 700. Third fastener; 800. Composite material coupling. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The following is combined with Figures 1 to 6 A bogie according to the present invention is described. The bogie includes: a frame 100, a drive unit 200, and a longitudinal tie rod 300.

[0037] like Figure 1 and Figure 2 In the structure shown, the frame 100 is provided with a first mounting part 101 and a second mounting part 102. The first mounting part 101 is used to mount the drive device 200, and the second mounting part 102 is used to mount the longitudinal tie rod 300. Specifically, one end of the drive device 200 is positioned and connected to the first mounting part 101 through a mounting node 400, and the other end of the drive device 200 is positioned and connected to a bushing; one end of the longitudinal tie rod 300 is positioned and connected to the second mounting part 102, and the other end of the longitudinal tie rod 300 is positioned and connected to a bushing.

[0038] In a specific implementation of the present invention, lateral positioning can be achieved through the positioning method of the drive device 200. A brand-new built-in bogie center arrangement is adopted, eliminating the traditional axle box body and using longitudinal tie rods 300 to provide longitudinal positioning.

[0039] In a specific implementation of this invention, the drive device 200 is assembled with the first mounting portion 101 on the frame 100. Specifically, one end of the drive device 200 is positioned and mounted with the first mounting portion 101 via a mounting node 400, and the other end of the drive device 200 is positioned and mounted with a bushing. The mounting node 400 can adopt a structure adapted to the first mounting portion 101. In the following embodiments, the mounting node 400 uses a rubber node. Through the cooperation of the first mounting portion 101 and the rubber node, the drive device 200 can bear lateral loads and achieve the lateral positioning function of the drive device 200 and the bogie. Optionally, the drive device 200 can be a motor, and different models and specifications of motors can be used according to actual needs.

[0040] Furthermore, the other end of the drive unit 200 can also be positioned and connected to the axle via the mounting node 400. The mounting node 400 can also be an elastic node, preferably a rubber node. The drive unit 200 is connected to the axle and the frame 100 via the rubber node, and the lateral positioning connection between the frame 100 and the axle is achieved through the drive unit 200.

[0041] To ensure the positioning stability between the drive unit 200 and the axle, multiple mounting arms 202 can be provided on the drive unit 200. Rubber nodes are fitted through through holes in the mounting arms 202 for connection to the axle. Figure 3 In the structure shown, four mounting arms 202 are welded to the other end of the drive unit 200. Two mounting arms 202 are arranged on each of the left and right sides of the drive unit 200, and two mounting arms 202 are arranged on each of the top and bottom sides of the drive unit 200. The four mounting arms 202 are arranged in a rectangular or square pattern, and the stability of the positioning and installation between the drive unit 200 and the axle is ensured by a four-point positioning method. Each mounting arm 202 is fitted with a corresponding rubber node, which connects to both sides of the axle.

[0042] In a specific implementation of this invention, a longitudinal tie rod 300 is mounted on the second mounting portion 102 of the frame 100. Specifically, one end of the longitudinal tie rod 300 is longitudinally positioned with respect to the frame 100 via the second mounting portion 102, and the other end of the longitudinal tie rod 300 is connected to the bushing of the axle. Through the connection between the second mounting portion 102 and the longitudinal tie rod 300, the longitudinal tie rod 300 bears the longitudinal load, and the longitudinal tie rod 300 is used to achieve the longitudinal positioning of the wheelset and bogie. It should be understood that the longitudinal tie rod 300 in this invention extends along the length direction of the bogie.

[0043] In addition, the bushing can be divided into two parts: a long bushing and a short bushing, with the middle part connected by the gearbox housing to bear the vehicle load. The longitudinal tie rod 300 can be arranged on both sides according to layout requirements, with the frame 100 installed horizontally and the bushing installed vertically. Since the longitudinal tie rod 300 bears a single load, lightweight metals (such as aluminum alloy, titanium alloy, or fiber-reinforced resin) can be used instead of steel forgings.

[0044] This invention improves the frame 100 by machining a first mounting part 101 and a second mounting part 102 onto it. Utilizing the cooperation between the first mounting part 101 and the mounting node 400, the load of the original tie rod is distributed by the drive device 200 to the node position of the drive device 200. The first mounting part 101 and the mounting node 400 simultaneously bear the weight of the drive device 200 and the force transmission between the drive device 200 and the frame 100. The second mounting part 102 connects the longitudinal tie rod 300 to the frame 100. The other end of the longitudinal tie rod 300 is connected to the bushing, and the longitudinal tie rod 300 bears the longitudinal load. Furthermore, with the above-described positioning mounting method, the wheelset can be separated by removing the positioning node in the middle of the drive device 200 and the nodes of the longitudinal tie rods 300 at both ends.

[0045] In summary, this invention, through structural improvements to the frame 100, eliminates the traditional axle box, optimizes mechanical performance, and distributes the load of the original tie rod to the node positions of the drive unit 200. These nodes simultaneously bear the weight of the drive unit 200 and the force transmission between the drive unit 200 and the frame 100. Meanwhile, the longitudinal tie rod 300 only provides longitudinal positioning for the vehicle. Because the axle box is eliminated, space is used more efficiently for the built-in bogie configuration, resulting in a smaller footprint. Furthermore, the split positioning mechanism enhances the bogie's structural stability and facilitates the installation and removal of wheelsets.

[0046] In one embodiment of the present invention, the first mounting part 101 includes: a first positioning node, which is located at the geometric center along the width direction of the frame 100; and a mounting node 400, which is a rubber node, for connecting the first positioning node to the positioning boss 201 on the drive device 200 via the rubber node. Specifically, the first positioning node is located in the middle of the crossbeam of the frame 100, and the drive device 200 is mounted in the lower middle position of the frame 100 through the cooperation of its positioning boss 201, the rubber node, and the first positioning node. In this embodiment, by cooperating with the positioning boss 201, the positioning and installation of the drive device 200 is achieved on the one hand, and the rubber node has a shock-absorbing effect on the other hand.

[0047] In one embodiment of the present invention, both ends of the rubber node are conical structures with a through hole in the center, and a positioning boss 201 is inserted into the through hole from one side of the rubber node. The rubber node can bear the lateral load of the vehicle, and at the same time, it can also bear the inertial load generated by the vertical vibration of the drive device 200.

[0048] In one embodiment of the present invention, the rubber node is press-fitted into the first positioning node, and the positioning boss 201 on the driving device 200 is inserted into the rubber node. In this embodiment, the installation of the rubber node is achieved through the interference fit between the rubber node and the first positioning node, and the positioning boss 201 is inserted into the through hole of the rubber node. Preferably, the first positioning node can be in the form of a circular hole, and the rubber node is pressed into the circular hole through its conical surface structure to achieve the assembly of the rubber node.

[0049] In one embodiment of the present invention, such as Figure 5 In the structure shown, the bogie further includes a first fastener 500, which is inserted into the rubber node and locked in place with the positioning boss 201 on the drive unit 200 to fix the rubber node within the first positioning node. Specifically, the first fastener 500 can be a bolt fastener with threaded holes machined on the positioning boss 201. In practice, the rubber node is first press-fitted into the first positioning node, the positioning boss 201 is assembled with the rubber node, and the first fastener 500 is inserted into the positioning boss 201 from one side of the first positioning node and tightened, thereby assembling the rubber node and the positioning boss 201 into the first positioning node via the first fastener 500. It should be understood that the first fastener 500 can also be other fastening elements besides bolts.

[0050] In one embodiment of the present invention, the first positioning node includes a mounting hole, the axis of which is perpendicular to the width direction of the frame 100. A rubber node is pressed into the first positioning node along its axial direction, and a positioning boss 201 on the driving device 200 is inserted into the rubber node along its axial direction. In this embodiment, the first positioning node is in the form of a mounting hole, preferably a round mounting hole. The axial direction of this mounting hole is perpendicular to the direction of the crossbeam on the frame 100 (i.e., the width direction of the frame 100). The positioning boss 201 on the driving device 200 is also inserted into the rubber node along its axial direction. This ensures that the driving device 200 is installed perpendicular to the crossbeam of the frame 100 through the cooperation of the mounting hole, the rubber node, and the positioning boss 201, ensuring accurate positioning of the driving device 200 and providing installation space for the longitudinal tie rods 300 on both sides.

[0051] In one embodiment of the present invention, the positioning boss 201 adopts a frustum-shaped structure, which matches the conical surface structure of the rubber node. Specifically, the rubber node is pressed into the mounting hole on the frame 100, and the positioning boss 201 is bolted into the through hole of the rubber node, so that the frustum-shaped structure and the conical surface structure fit together closely, and the drive device 200 is positioned without gaps through the cooperation of the above structures. Specifically, the rubber node in this embodiment has a conical rubber layer, and the outer surface of the rubber node with its maximum outer diameter is pressed into the mounting hole on the frame 100. Figure 5 In the structure shown, the rubber node has its largest outer diameter 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 mounting hole on the frame 100. In this embodiment, due to the structure of its conical rubber layer, 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 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 used in this embodiment has stronger shock absorption capacity, improving safety and stability.

[0052] The present invention also provides an optional embodiment in which the rubber node is an annular rubber block, the annular rubber block being positioned between the truncated cone and the through hole on the frame, and the annular rubber block being sandwiched between the positioning boss 201 and the assembly hole on the frame 100. Compared with the structure of the conical rubber layer in the above embodiment, this method requires pre-compression by applying bolt torque during installation, which places higher demands on bolt strength and assembly, but the annular rubber block structure is simpler and easier to process.

[0053] In one embodiment of the present invention, such as Figure 2 In the structure shown, the second mounting part 102 includes a plurality of second positioning nodes, which are respectively located on both sides of the first mounting part 101 and are arranged symmetrically with the first mounting part 101 as the midpoint of symmetry. In this embodiment, at least two second positioning nodes are arranged, and at least two longitudinal tie rods 300 are also arranged accordingly, connecting to the corresponding bushings. Figure 2 In the structure shown, two second positioning nodes and two longitudinal tie rods 300 are arranged, located on both sides of the first mounting part 101 and symmetrically arranged. Specifically, a second mounting part 102 is provided at each end of the crossbeam of the frame 100 for mounting the longitudinal tie rods 300.

[0054] In one embodiment of the present invention, such as Figure 2In the structure shown, each second positioning node includes a positioning seat 1021, which has a first protrusion 1022 and a second protrusion 1023 arranged sequentially from top to bottom along the height direction of the frame 100. The end faces of the first protrusion 1022 and the second protrusion 1023 form mounting surfaces for assembling the longitudinal tie rod 300. In this embodiment, the second positioning node takes the form of a positioning seat 1021 to achieve positioning and installation of one end of the longitudinal tie rod 300 with the frame 100. Specifically, the positioning seat 1021 is composed of the first protrusion 1022 and the second protrusion 1023. The end faces of the first protrusion 1022 and the second protrusion 1023 form mounting surfaces that connect with the longitudinal tie rod 300. Positioning and assembly of one end of the longitudinal tie rod 300 can be achieved through these two mounting surfaces. Moreover, positioning and installation of the longitudinal tie rod 300 through the mounting surfaces of the two protrusions (i.e., the first protrusion 1022 and the second protrusion 1023) also ensures the positioning stability of the longitudinal tie rod 300.

[0055] In one embodiment of the present invention, such as Figure 2 In the structure shown, a mounting groove 1024 is formed between the first protrusion 1022 and the second protrusion 1023. The mounting groove 1024 is used to accommodate the annular portion of the longitudinal tie rod 300. Specifically, since one end of the longitudinal tie rod 300 has an annular portion structure, in this embodiment, the mounting groove 1024 is provided between the first protrusion 1022 and the second protrusion 1023, and the annular portion of the longitudinal tie rod 300 is placed in the mounting groove 1024. This mounting groove 1024, on the one hand, can avoid the annular portion of the longitudinal tie rod 300, saving space; on the other hand, during assembly, the mounting groove 1024 is easy to position with the longitudinal tie rod 300, facilitating installation.

[0056] In one embodiment of the present invention, such as Figure 4 In the structure shown, the bogie further includes a second fastener 600, with a mounting hole formed on the mounting surface. The second fastener 600 passes through one end of the longitudinal tie rod 300 and is inserted into the mounting hole to fix one end of the longitudinal tie rod 300 to the mounting surface. Preferably, the second fastener 600 can be a bolt fastener, and the mounting hole formed on the mounting surface is a threaded hole. The bolt fastener passes through one end of the longitudinal tie rod 300 in sequence and is screwed into the threaded hole on the mounting surface, thereby fixing one end of the longitudinal tie rod 300 to the mounting surface.

[0057] In one embodiment of the present invention, such as Figure 4 In the structure shown, the bogie further includes a third fastener 700, through which the other end of the longitudinal tie rod 300 is connected to the bushing. Preferably, the third fastener 700 can be a bolt fastener, and the other end of the longitudinal tie rod 300 is connected to the bushing via a bolt fastener.

[0058] In one embodiment of the present invention, a first fastener 500, a second fastener 600, and a third fastener 700 are used to connect the drive unit 200 to the frame 100, and the longitudinal tie rod 300 to the frame 100 and the bushing. Furthermore, the first fastener 500, the second fastener 600, and the third fastener 700 can all be installed using bolts, facilitating the assembly and disassembly of the drive unit 200 and the frame 100, as well as the longitudinal tie rod 300 to the frame 100 and the bushing. This facilitates the installation and replacement of various components on the bogie, improving assembly efficiency. In specific implementation, removing the bolts from the longitudinal tie rod 300 and the positioning nodes of the drive unit 200 allows for the disassembly of the wheelset assembly and the bogie.

[0059] In one embodiment of the present invention, such as Figure 6 In the structure shown, the bogie further includes a composite material coupling 800, which connects the drive unit 200 and the axle. In this embodiment, a novel composite material coupling 800 is used; preferably, the composite material coupling 800 includes a carbon fiber coupling. Both ends of the carbon fiber coupling are connected to the output shaft of the drive unit 200 using flexible carbon fiber composite plates with mating end face teeth, and the other end is connected to the end of a hollow shaft pinion using a flexible carbon fiber composite plate with mating end face teeth.

[0060] In other embodiments of the present invention, the other end of the drive device is positioned and connected to the bushing via rubber nodes. Multiple mounting arms are provided on the housing of the drive device, each mounting arm corresponding to a rubber node, which connects to the bushing. Specifically, three or four mounting arms can be provided depending on actual positioning needs. If four mounting arms are provided, the four rubber nodes form a rectangular distribution structure, correspondingly connecting to the bushing, thereby achieving multi-point positioning of the motor and the bushing. Optionally, while ensuring stable motor installation, the number of rubber nodes can be reduced, lowering assembly requirements.

[0061] In other embodiments of the present invention, the rubber nodes and the bushings are connected by mounting blocks and fasteners. Specifically, mounting blocks are fixed on both sides of each rubber node, and mounting holes are formed on the mounting blocks, through which the mounting blocks are connected to the bushings. Specifically, mounting blocks are fixedly installed on both sides of the rubber nodes, and the mounting blocks are connected to the bushings using their mounting holes. Preferably, bolts are used to fasten the mounting blocks to the bushings, and the mounting holes on the mounting blocks are threaded holes. In this embodiment, the connection between the rubber nodes and the bushings via mounting blocks on both sides ensures the stability of the connection with the bushings.

[0062] In other embodiments of the present invention, the rubber nodes connecting the motor and the frame are oriented differently from those connecting the motor and the bushing. For ease of understanding, the rubber node connecting the motor and the frame is named the first rubber node, and the rubber node connecting the motor and the bushing is named the second rubber node. The axial direction of the first rubber node is perpendicular to the axial direction of the second rubber node. Optionally, the axial direction of the first rubber node is oriented towards the frame, and the axial direction of the second rubber node is parallel to the extension direction of the axle. Generally, the axle and the bushing are horizontally and laterally arranged, so the axial direction of the second rubber node is also horizontally and laterally arranged, while the axial direction of the first rubber node is oriented towards the frame, so the axial direction of the first rubber node is horizontally and longitudinally arranged. Therefore, in this embodiment, the first rubber node and the second rubber node can be considered to be perpendicular to each other. With the above arrangement, by utilizing the cooperation of the first rubber node, the second rubber node, and the motor, lateral loads can be borne. The first rubber node and the second rubber node can simultaneously bear the weight of the motor and transmit loads between the frame, the motor, and the bushing.

[0063] The present invention also provides a rail vehicle. This rail vehicle includes the bogie described in the above embodiments of the present invention.

[0064] The rail vehicle provided by the present invention has the same advantages as described above because it includes the bogie in the above embodiments of the present invention.

[0065] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. 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 network 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.

[0066] 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 bogie, characterized in that, include: A frame (100) is provided with a first mounting part (101) and a second mounting part (102). A drive device (200) is provided, one end of which is positioned and connected to the first mounting part (101) via a mounting node (400), and the other end of which is positioned and connected to a bushing. A longitudinal tie rod (300) is provided, one end of which is positioned and connected to the second mounting part (102), and the other end of which is positioned and connected to the bushing. The first mounting part (101) includes: a first positioning node, which is located at the geometric center position along the width direction of the frame (100); The mounting node (400) is a rubber node, and the first positioning node is used to connect to the positioning boss (201) on the driving device (200) through the rubber node; The first positioning node includes an assembly hole, and the axial direction of the assembly hole is perpendicular to the width direction of the frame (100). The rubber node is pressed into the first positioning node along the axial direction of the first positioning node, and the positioning boss (201) on the driving device (200) is inserted into the rubber node along the axial direction of the rubber node.

2. The bogie according to claim 1, characterized in that, The rubber node is press-fitted into the first positioning node, and the positioning boss (201) on the drive device (200) is inserted into the rubber node.

3. The bogie according to claim 2, characterized in that, Also includes: The first fastener (500) is inserted into the rubber node and locked and fixed with the positioning boss (201) on the drive device (200) to fix the rubber node in the first positioning node.

4. The bogie according to claim 1, characterized in that, The second mounting part (102) includes a plurality of second positioning nodes, and the second positioning nodes are respectively located on both sides of the first mounting part (101), and are centrally symmetrically arranged with the first mounting part (101) as the midpoint of the symmetry.

5. The bogie according to claim 4, characterized in that, Each of the second positioning nodes includes: a positioning seat (1021), the positioning seat (1021) having a first protrusion (1022) and a second protrusion (1023) arranged sequentially from top to bottom along the height direction of the frame (100); The end faces of the first protrusion (1022) and the second protrusion (1023) form mounting surfaces for assembling the longitudinal tie rod (300).

6. The bogie according to claim 5, characterized in that, A mounting groove (1024) is formed between the first protrusion (1022) and the second protrusion (1023), the mounting groove (1024) being used to receive the annular portion of the longitudinal tie rod (300).

7. The bogie according to claim 5, characterized in that, Also includes: The second fastener (600) has a mounting hole formed on the mounting surface. The second fastener (600) passes through one end of the longitudinal tie rod (300) and is inserted into the mounting hole to fix one end of the longitudinal tie rod (300) to the mounting surface.

8. The bogie according to any one of claims 4 to 7, characterized in that, Also includes: The third fastener (700) is used to connect the other end of the longitudinal tie rod (300) to the bushing.

9. The bogie according to claim 1, characterized in that, Also includes: A composite material coupling (800) is connected between the drive unit (200) and the axle.

10. The bogie according to claim 9, characterized in that, The composite material coupling (800) includes a carbon fiber coupling.

11. A rail vehicle, characterized in that, include: The bogie according to any one of claims 1 to 10.

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