Shaft end transmission device, wheel set and bogie

Abstract

The invention relates to the technical field of railway vehicles, and provides a shaft end transmission device, a wheel set and a bogie, the shaft end transmission device comprises a shaft end spline, a flexible plate and a connecting plate, the shaft end spline is provided with a connecting hole, and a mandrel is inserted into the connecting hole. The flexible plate shaft end spline is connected with the flexible plate through a first connecting piece. One end of the connecting plate is connected with the flexible plate through a second connecting piece, and the other end is connected with the wheel through a third connecting piece. By means of the mode, the end of the mandrel is connected with the shaft end spline and used for transmitting power to wheels, the mandrel is not directly connected with the bogie, force of the bogie and a vehicle body is not directly applied to the mandrel, axial force and pressure borne by the mandrel are greatly reduced, the diameter of the mandrel can be smaller under the condition that the service life of the mandrel is not affected, and the service life of the mandrel is prolonged. And the requirement of light weight is met.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to an axle end transmission device, a wheelset and a bogie. Background Art

[0002] With the rapid development of rail transit, lightweighting is one of the important goals of modern rail vehicle design. On the one hand, lightweighting reduces the vehicle's own weight, saves raw materials and reduces manufacturing costs; on the other hand, lightweighting reduces the vehicle's traction and braking force, achieves energy conservation and consumption reduction, effectively reduces the line load and saves its maintenance costs.

[0003] As one of the most important components of rail vehicles, the bogie has a rigid connection between the drive shaft and the wheels. The drive shaft provides power to the wheels. At the same time, the axle is also subject to the pressure from the bogie frame and the car body, as well as the axial force from turning. This is not conducive to the long-term use of the axle and the lightweight requirements of the entire vehicle. Summary of the invention

[0004] The embodiments of the present invention provide an axle end transmission device, a wheelset and a bogie, which are used to solve the technical problems in the prior art that the axle life is short and is not conducive to the lightweight requirement of the entire vehicle.

[0005] The embodiment of the present invention provides a shaft end transmission device, comprising: a shaft end spline having a connecting hole, wherein the connecting hole is used for inserting a core shaft;

[0006] A flexible plate, wherein the shaft end spline is connected to the flexible plate via a first connecting member;

[0007] A connecting plate, one end of which is connected to the flexible plate via a second connecting member, and the other end of which is connected to the wheel via a third connecting member.

[0008] According to one embodiment of the present invention, an internal key tooth is provided in the connecting hole for cooperating with the external key tooth on the end of the core shaft.

[0009] According to one embodiment of the present invention, the shaft end spline comprises a connecting end and an extending end, the diameter of the connecting end is larger than the diameter of the extending end, and the connecting hole passes through the connecting end and the extending end;

[0010] The connecting end is provided with a plurality of first mounting holes, and the flexible plate is provided with a plurality of second mounting holes corresponding to the first mounting holes;

[0011] The first connecting member is a threaded connecting member, and the flexible plate is sequentially inserted into the first mounting hole and the second mounting hole through the threaded connecting member to be connected with the shaft end spline.

[0012] According to an embodiment of the present invention, a first gasket is sleeved on the first connecting member, and the first gasket is located between the shaft end spline and the flexible plate and abuts against the shaft end spline and the flexible plate respectively.

[0013] According to one embodiment of the present invention, the flexible plate is further provided with a plurality of third mounting holes, and the connecting plate is provided with a plurality of fourth mounting holes corresponding to the third mounting holes;

[0014] The second connecting member is a threaded connecting member, and the flexible plate is sequentially inserted into the third mounting hole and the fourth mounting hole through the threaded connecting member to be connected to the connecting plate.

[0015] According to one embodiment of the present invention, a plurality of extended mounting blocks are provided on the outer periphery of the connecting plate, and the fourth mounting hole is opened on the extended mounting block;

[0016] The connecting plate is also provided with a plurality of fifth mounting holes, the third connecting member is a threaded connecting member, and the connecting plate is passed through the fifth mounting holes and the mounting holes on the wheel through the threaded connecting members to be connected to the wheel.

[0017] According to an embodiment of the present invention, the extended mounting blocks are evenly spaced along the outer circumference of the connecting plate.

[0018] According to an embodiment of the present invention, a second gasket is sleeved on the second connecting member, and the second gasket is located between the flexible plate and the connecting plate and abuts against the flexible plate and the connecting plate respectively.

[0019] The embodiment of the present invention further provides a wheelset, comprising: a spindle, both ends of which are provided with the shaft end transmission device as described above;

[0020] A wheel, one end of the shaft end transmission device is connected to the wheel;

[0021] A shaft sleeve is sleeved outside the core shaft, and two ends of the shaft sleeve are connected to the wheel through bearings respectively.

[0022] An embodiment of the present invention further provides a bogie, comprising: a frame;

[0023] The above-mentioned wheelset is installed on the frame.

[0024] The shaft end transmission device provided in the embodiment of the present invention has a core shaft end connected to the shaft end spline for transmitting power to the wheel. The core shaft is not directly connected to the bogie, and thus the bogie does not directly apply force from the vehicle body to the core shaft. As a result, the axial force and pressure on the core shaft are greatly reduced, and the core shaft can be made smaller in diameter without affecting its service life, thereby meeting the requirements of lightweight.

[0025] The wheelset provided in the embodiment of the present invention includes the above-mentioned shaft end transmission device, and has all the beneficial effects of the shaft end transmission device. To avoid repetition, no limitation is made here.

[0026] The bogie provided in the embodiment of the present invention includes the above-mentioned wheelset and has all the beneficial effects of the shaft end transmission device. To avoid repetition, no limitation is made here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a partial structural schematic diagram of the bogie of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the shaft end transmission device of the present invention at one angle;

[0030] Figure 3 It is a structural schematic diagram of the shaft end transmission device of the present invention from another angle;

[0031] Figure 4 for Figure 2 The structural diagram of the shaft end spline shown;

[0032] Figure 5 for Figure 2 A schematic diagram of the structure of the flexible plate shown;

[0033] Figure 6 yes Figure 2 A schematic diagram of the structure of the connecting plate shown;

[0034] Figure 7 yes Figure 1 A schematic diagram of the structure of the mandrel shown;

[0035] Figure 8 yes Figure 1 Schematic diagram of the structure of the wheel shown.

[0036] Reference numerals:

[0037] 10, shaft end spline; 110, connecting hole; 120, first connecting member; 130, connecting end; 1310, first mounting hole; 140, extension end;

[0038] 20, flexible board; 220, second mounting hole; 230, first gasket; 240, third mounting hole;

[0039] 30, connecting plate; 310, second connecting member; 320, fourth mounting hole; 330, extended mounting block; 340, fifth mounting hole; 350, second gasket;

[0040] 40, wheelset; 410, spindle; 411, spline mounting seat; 412, speed measuring gear mounting seat; 413, bearing mounting seat; 414, large gear mounting seat; 420, wheel; 421, rim; 422, elastic rubber; 423, pressure ring; 424, mounting screw; 425, auxiliary plate; 430, shaft sleeve; 440, shaft end transmission device;

[0041] 50. Driving motor;

[0042] 60. Gearbox. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and 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 devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0045] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0046] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0048] Combine the following Figure 1-Figure 8 The shaft end transmission device 440, the wheelset 40 and the bogie according to the embodiment of the present invention are described.

[0049] The bogie comprises a wheelset 40 and a frame, and the wheelset 40 is mounted on the frame.

[0050] Please refer to Figure 1 The wheelset 40 includes a spindle 410 and two wheels 420 located at the ends of the spindle 410. The power of the spindle 410 comes from a drive motor 50 and a gear box 60. The drive motor 50 rotates and transmits the power to the spindle 410 through the gear box 60, and then the spindle 410 drives the wheels 420 to rotate.

[0051] Specifically, the wheel 420 (see Figure 8 ) includes a rim 421, an elastic rubber 422, a pressure ring 423, a mounting screw 424 and an auxiliary plate 425. The elastic rubber 422 is installed between the rim 421 and the auxiliary plate 425 to achieve vibration reduction and noise reduction, thereby reducing the vibration of the rail wheel 420.

[0052] The auxiliary plate 425 and the pressure ring 423 are made of aluminum alloy, which effectively reduces the weight of the wheel 420 and realizes a lightweight design. The mounting screws 424 facilitate the installation of the connection structure between the sealing ring and the wheel 420.

[0053] In one embodiment, shaft end transmission devices 440 are respectively provided at both ends of the mandrel 410, and the mandrel 410 transmits power to the wheel 420 through the shaft end transmission devices 440. A shaft sleeve 430 is provided on the outside of the mandrel 410 to connect with the wheel 420, and the frame, the drive motor 50 and the gear box 60 are all installed on the shaft sleeve 430. The shaft sleeve 430 plays a supporting role for the frame, the housing of the gear box 60, etc. The mandrel 410 does not need to bear too much pressure on the frame and the vehicle body, and the axial force received during turning is also greatly reduced due to the setting of the shaft sleeve 430. In this way, the mandrel 410 can meet the normal transmission function while selecting a structural member with a smaller diameter to meet the requirements of lightweight rail vehicles.

[0054] That is, the spindle 410 does not need to be directly rigidly connected to the wheel 420. The axial force applied to the wheel 420 when turning is absorbed by the sleeve 430, and the sleeve 430 supports the housing of the gearbox 60 and the installation of the drive motor 50. The deadweight of the gearbox 60 and the drive motor 50 will not exert pressure on the spindle 410. The frame is connected to the sleeve 430, thereby further reducing the force applied by the bogie to the spindle 410. The sleeve 430 is connected to the wheel 420 through a bearing, and the rotation of the wheel 420 will not drive the sleeve 430 to rotate. The sleeve 430 and the wheel 420 are detachable, which is convenient for maintenance and replacement of the sleeve 430.

[0055] Please refer to Figure 2 and Figure 3 In one embodiment, the shaft end transmission device 440 includes a shaft end spline 10, a flexible plate 20 and a connecting plate 30. The shaft end spline 10 has a connecting hole 110, and the connecting hole 110 is used to insert the core shaft 410. The shaft end spline 10 of the flexible plate 20 is connected to the flexible plate 20 through a first connecting member 120. One end of the connecting plate 30 is connected to the flexible plate 20 through a second connecting member 310, and the other end is connected to the wheel 420 through a third connecting member.

[0056] The end of the core shaft 410 is connected to the shaft end spline 10 for transmitting power to the wheel 420. The core shaft 410 is not directly connected to the bogie, and thus the force of the bogie and the vehicle body is not directly applied to the core shaft 410. As a result, the axial force and pressure on the core shaft 410 are greatly reduced. The core shaft 410 can be made smaller in diameter without affecting its service life, thereby meeting the requirements of lightweight.

[0057] Specifically, refer to Figure 7 A spline mounting seat 411, a speed measuring gear mounting seat 412, a bearing mounting seat 413 and a large gear mounting seat 414 are provided on the core shaft 410, wherein the gear set in the gear box 60 includes a large gear that is rotatably engaged with the large gear mounting seat 414, and the end of the core shaft 410 cooperates with the shaft end spline 10 through the spline mounting seat 411 to realize the torque transmission from the core shaft 410 to the wheel 420.

[0058] The setting of the speed measuring gear facilitates the monitoring of the train running speed. The bearing mounting seat 413 is used to connect the bearing. The bearing mainly realizes rotation and radial and axial positioning to avoid the influence of the rotation of the core shaft 410 on the transmission performance.

[0059] The mandrel 410, the shaft end spline 10, the flexible plate 20 and the connecting plate 30 are coaxially installed. An internal key tooth is provided in the connecting hole 110 of the shaft end spline 10 for matching with the external key tooth at the end of the mandrel 410. The length extension direction of the internal key tooth is consistent with the axial direction of the connecting hole 110. The external key tooth at the end of the mandrel 410 and the internal key tooth in the connecting hole 110 are interference fit. The output end of the drive motor 50 transmits power to the gear box 60, and the gear set in the gear box 60 transmits power to the axle, and the rotation of the axle transmits power to the wheel 420.

[0060] Please refer to Figure 4 In one embodiment, the shaft end spline 10 includes a connecting end 130 and an extending end 140, the diameter of the connecting end 130 is larger than the diameter of the extending end 140, and the connecting hole 110 passes through the connecting end 130 and the extending end 140; a plurality of first mounting holes 1310 are provided on the connecting end 130, and a plurality of second mounting holes 220 corresponding to the first mounting holes 1310 are provided on the flexible plate 20; the first connecting member 120 is a threaded connecting member, and the flexible plate 20 is sequentially penetrated through the first mounting hole 1310 and the second mounting hole 220 through the threaded connecting member to be connected to the shaft end spline 10.

[0061] The setting of the extension end 140 ensures the installation length of the mandrel 410 and the shaft end spline 10, and is used to improve the installation stability between the mandrel 410 and the wheel 420. The number of the first mounting holes 1310 and the second mounting holes 220 corresponds to each other. The first mounting holes 1310 are arranged at intervals along the circumference of the outer side of the connecting end 130, and the second mounting holes 220 are adapted to the positions of the first mounting holes 1310. The first mounting holes 1310 and the second mounting holes 220 are both round holes. The setting of the round holes does not need to consider the installation direction and angle. As long as two of the holes are aligned, they can be installed, which is conducive to improving the installation efficiency of the shaft end spline 10 and the flexible plate 20.

[0062] The threaded connection part can be a bolt, which is sleeved on the first gasket 230. The first gasket 230 is located between the shaft end spline 10 and the flexible plate 20, and abuts against the shaft end spline 10 and the flexible plate 20 respectively, thereby playing a buffering role. Threads are provided on the first mounting hole 1310 and the second mounting hole 220, and the shaft end spline 10 and the flexible plate 20 are connected in cooperation with a locking nut, thereby improving the installation stability between the shaft end spline 10 and the flexible plate 20.

[0063] Please refer to Figure 5 and Figure 6In one embodiment, a plurality of third mounting holes 240 are further provided on the flexible plate 20, and a plurality of fourth mounting holes 320 corresponding to the third mounting holes 240 are provided on the connecting plate 30; the second connecting member 310 is a threaded connecting member, and the flexible plate 20 is sequentially passed through the third mounting holes 240 and the fourth mounting holes 320 through the threaded connecting member to be connected to the connecting plate 30.

[0064] The threaded connector can be but is not limited to a bolt. The third mounting hole 240 and the fourth mounting hole 320 can both be round holes with threads arranged inside. The flexible plate 20 is connected to the connecting plate 30 by bolts and locking nuts to improve the installation stability of the flexible plate 20 and the connecting plate 30.

[0065] In one embodiment, a plurality of extended mounting blocks 330 are provided on the outer periphery of the connecting plate 30, and the fourth mounting hole 320 is opened on the extended mounting block 330; a plurality of fifth mounting holes 340 are also opened on the connecting plate 30, and the third connecting member (not shown) is a threaded connecting member, and the connecting plate 30 is connected to the wheel 420 by passing through the fifth mounting hole 340 and the mounting hole position on the wheel 420 through the threaded connecting member.

[0066] The extended mounting blocks 330 are evenly spaced along the outer circumference of the connecting plate 30. The shape of the extended mounting blocks 330 is trapezoidal. At least one fourth mounting hole 320 can be set on each extended mounting block 330. The setting of the extended mounting blocks 330 can further reduce the weight of the connecting plate 30 and meet the requirements of lightweight wheelset 40.

[0067] In one embodiment, a second gasket 350 is sleeved on the second connecting member 310 . The second gasket 350 is located between the flexible plate 20 and the connecting plate 30 and abuts against the flexible plate 20 and the connecting plate 30 , respectively.

[0068] The second connecting member 310 can be but is not limited to a bolt. A second gasket 350 is sleeved on the second connecting member 310. The second gasket 350 is located between the flexible plate 20 and the connecting plate 30 and abuts against the flexible plate 20 and the connecting plate 30 respectively to play a buffering role.

[0069] In one embodiment, the first gasket 230 and the second gasket 350 can both be made of rubber blocks, so as to provide a buffering effect on the installation between the shaft end spline 10, the flexible plate 20 and the connecting plate 30, and to achieve a vibration isolation effect.

[0070] The flexible plate 20 is made of carbon fiber, which can effectively reduce the weight of the shaft end transmission device 440 and meet the requirements of lightweight. The shaft end transmission device 440 uses the flexible plate 20 to control radial, axial and torsional stiffness, ensuring the torque transmission capacity of the structure while achieving axial load decoupling, effectively reducing the impact of the wheel 420 vibration on the axle performance.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shaft end transmission device, characterized in that: include: The shaft end spline has a connecting hole, and the connecting hole is used for inserting the core shaft; A flexible plate, wherein the shaft end spline is connected to the flexible plate via a first connecting member; A connecting plate, one end of which is connected to the flexible plate via a second connecting member, and the other end of which is connected to the wheel via a third connecting member.

2. The shaft end transmission device according to claim 1, characterized in that: The connecting hole is provided with internal key teeth for matching with the external key teeth at the end of the core shaft.

3. The shaft end transmission device according to claim 1, characterized in that: The shaft end spline includes a connecting end and an extending end, the connecting end has a diameter greater than that of the extending end, and the connecting hole passes through the connecting end and the extending end; The connecting end is provided with a plurality of first mounting holes, and the flexible plate is provided with a plurality of second mounting holes corresponding to the first mounting holes; The first connecting member is a threaded connecting member, and the flexible plate is sequentially inserted into the first mounting hole and the second mounting hole through the threaded connecting member to be connected with the shaft end spline.

4. The shaft end transmission device according to claim 3, characterized in that: A first gasket is sleeved on the first connecting member. The first gasket is located between the shaft end spline and the flexible plate and abuts against the shaft end spline and the flexible plate respectively.

5. The shaft end transmission device according to claim 1, characterized in that: The flexible plate is also provided with a plurality of third mounting holes, and the connecting plate is provided with a plurality of fourth mounting holes corresponding to the third mounting holes; The second connecting member is a threaded connecting member, and the flexible plate is sequentially inserted into the third mounting hole and the fourth mounting hole through the threaded connecting member to be connected to the connecting plate.

6. The shaft end transmission device according to claim 5, characterized in that: A plurality of extended mounting blocks are provided on the outer periphery of the connecting plate, and the fourth mounting holes are opened on the extended mounting blocks; The connecting plate is also provided with a plurality of fifth mounting holes, the third connecting member is a threaded connecting member, and the connecting plate is passed through the fifth mounting holes and the mounting holes on the wheel through the threaded connecting members to be connected to the wheel.

7. The shaft end transmission device according to claim 6, characterized in that: The extended mounting blocks are evenly spaced along the outer circumference of the connecting plate.

8. The shaft end transmission device according to claim 5, characterized in that: A second gasket is sleeved on the second connecting member. The second gasket is located between the flexible plate and the connecting plate and abuts against the flexible plate and the connecting plate respectively.

9. A wheelset, characterized in that: include: A mandrel, both ends of which are provided with a shaft end transmission device as described in any one of claims 1 to 8; A wheel, one end of the shaft end transmission device is connected to the wheel; A shaft sleeve is sleeved outside the core shaft, and two ends of the shaft sleeve are connected to the wheel through bearings respectively.

10. A bogie, characterized in that: include: Framework; The wheelset according to claim 9, wherein the wheelset is mounted on the frame.

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