Hanging mechanism of motor train unit gearbox

Abstract

The utility model discloses a hanging mechanism of a gearbox of a motor train unit, and relates to the technical field of railway vehicles, the hanging mechanism comprises a hanging rod assembly which comprises a hanging rod body, and spherical hinge mounting through holes are formed in the two ends of the hanging rod body; the pair of spherical hinge assemblies are rotatably arranged in the spherical hinge mounting through holes respectively; each spherical hinge assembly comprises a spherical hinge arranged in the spherical hinge mounting through hole; the central shaft of the central shaft penetrates through the sphere center of the spherical hinge, and spherical hinge mounting holes are formed in the two ends of the central shaft; the suspender clamping mechanism comprises an upper suspender support and a lower suspender support which are arranged up and down; and the lifting lug mechanism comprises a pair of lifting lug pieces which are arranged at an interval. While the stability and safety of train operation are guaranteed, the damping and buffering effects are achieved, vibration from a rail can be effectively buffered, damage of vibration to a gearbox is reduced, the gearbox is protected against damage, and meanwhile the riding comfort of passengers is improved.

Description

Technical Field

[0001] The present application relates to the technical field of rail vehicles, and in particular to a suspension mechanism for a gearbox of an EMU. Background Art

[0002] At present, the gearbox of the high-speed train is one of the important components on the train, which effectively transmits the torsional torque of the traction motor to the wheelset to ensure that the train can start and accelerate smoothly, or transmits the torque of the axle to the generator-type traction motor.

[0003] Therefore, in order to meet actual needs, a suspension mechanism for a gearbox of an EMU is provided. Summary of the Invention

[0004] In response to the defects existing in the prior art, the purpose of this application is to provide a suspension mechanism for the gearbox of an EMU, which has the functions of shock absorption and buffering while ensuring the smoothness and safety of the train operation. It can effectively buffer the vibration from the track, reduce the damage to the gearbox caused by vibration, protect the gearbox from damage, and at the same time improve the riding comfort of passengers.

[0005] In order to achieve the above objectives, the technical solution adopted by this application is:

[0006] The present application provides a suspension mechanism for a gearbox of an EMU, the suspension mechanism comprising:

[0007] A boom assembly, the boom assembly comprising:

[0008] A boom body, with ball joint mounting holes provided at both ends of the boom body;

[0009] A pair of spherical hinge assemblies rotatably disposed in the spherical hinge mounting through holes, the spherical hinge assemblies comprising:

[0010] A ball joint provided in the ball joint mounting through hole;

[0011] A core shaft is provided on the ball joint, wherein the central axis of the core shaft passes through the center of the ball of the ball joint, and ball joint mounting holes are provided at both ends of the core shaft;

[0012] The outer wall of the ball joint is provided with a ball joint rubber jacket;

[0013] A boom clamping mechanism, comprising:

[0014] An upper boom support and a lower boom support are provided above and below, and a space for limiting the movement of the ball joint assembly is provided between the upper boom support and the lower boom support;

[0015] The lifting lug mechanism includes:

[0016] A pair of lifting ear pieces arranged at intervals, each of the lifting ear pieces being provided with a lifting ear through hole;

[0017] One of the lifting ear pieces corresponds to a ball joint mounting hole of the ball joint assembly;

[0018] The boom clamping mechanism and the lifting ear mechanism correspond to different ball joint assemblies respectively.

[0019] On the basis of the above technical solution, the upper support of the boom and the lower support of the boom are stacked up and down;

[0020] The boom upper support comprises:

[0021] Upper support back plate;

[0022] Two upper support lifting ears arranged side by side on one side of the upper support back plate;

[0023] A U-shaped groove is provided between the upper support back plate and the two upper support lifting ears;

[0024] The lower support of the boom comprises:

[0025] Lower support back plate;

[0026] Two lower support lifting ears arranged side by side on one side of the lower support back plate;

[0027] A spherical groove is provided between the lower support back plate and the two lower support lifting ears;

[0028] A connecting plate is provided on the other side of the boom upper support;

[0029] A reinforcement plate is provided on the other side of the lower support of the boom;

[0030] The connecting plates and the reinforcing plates are arranged in a T-shape;

[0031] The two upper support lifting ears and the two lower support lifting ears are spaced apart and correspond to each other one by one;

[0032] The two upper support ears, the two lower support ears, the U-shaped groove and the spherical groove form a space for limiting the movement of the ball joint assembly.

[0033] On the basis of the above technical solution, the upper support lug is provided with an upper support lug through hole;

[0034] The lower support lug is provided with a lower support lug through hole;

[0035] When the ball joint assembly corresponding to the upper support of the boom and the lower support of the boom is located in the movable space formed by the two upper support ears, the two lower support ears, the U-shaped groove and the spherical groove, the ball joint mounting hole of the ball joint assembly corresponds to one upper support ear through hole and one lower support ear through hole;

[0036] Each of the ball joint mounting holes of the ball joint assembly corresponding to the upper support and the lower support of the boom corresponds to an upper support ear through hole and a lower support ear through hole respectively.

[0037] On the basis of the above technical solution, one of the lifting ear through holes corresponds to one of the ball joint mounting holes.

[0038] Compared with the prior art, the advantages of this application are:

[0039] While ensuring the smoothness and safety of train operation, this application has the functions of shock absorption and buffering, can effectively buffer the vibration from the track, reduce the damage of vibration to the gearbox, protect the gearbox from damage, and improve the riding comfort of passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0041] Figure 1 This is a schematic structural diagram of a suspension rod assembly in a suspension mechanism of an EMU gearbox according to an embodiment of the present application;

[0042] Figure 2 This is a schematic structural diagram of a ball joint assembly in a suspension mechanism of an EMU gearbox according to an embodiment of the present application;

[0043] Figure 3 This is a schematic structural diagram of a boom assembly, a ball joint assembly, and a boom clamping mechanism in a suspension mechanism of an EMU gearbox according to an embodiment of the present application;

[0044] Figure 4 This is a structural schematic diagram of a hanger rod assembly, a ball joint assembly, and a lifting lug mechanism in a suspension mechanism of an EMU gearbox according to an embodiment of the present application;

[0045] Figure 5 This is a schematic structural diagram of a boom clamping mechanism in a suspension mechanism of an EMU gearbox according to an embodiment of the present application;

[0046] In the picture:

[0047] 1. Hanger assembly; 10. Hanger rod body; 100. Ball joint mounting hole; 2. Ball joint assembly; 20. Ball joint; 21. Core shaft; 210. Ball joint mounting hole; 22. Ball joint rubber jacket; 3. Hanger clamping mechanism; 30. Upper support of hanger; 300. Upper support back plate; 301. Upper support lifting ear; 3011. U-shaped groove; 31. Lower support of hanger; 310. Lower support back plate; 311. Lower support lifting ear; 3111. Spherical groove; 32. Connecting plate; 33. Reinforcement plate; 4. Lifting ear mechanism; 40. Lifting ear piece; 41. Lifting ear through hole; A. Upper support lifting ear through hole; B. Lower support lifting ear through hole. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] The embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0050] An embodiment of the present application provides a suspension mechanism for a gearbox of an EMU, which has shock-absorbing and buffering functions while ensuring the smoothness and safety of the train operation. It can effectively buffer the vibration from the track, reduce the damage to the gearbox caused by the vibration, protect the gearbox from damage, and improve the riding comfort of passengers.

[0051] To achieve the above technical effects, the overall idea of ​​this application is as follows:

[0052] A suspension mechanism for a gearbox of an EMU, comprising:

[0053] A boom assembly 1, comprising:

[0054] A boom body 10, with ball joint mounting holes 100 provided at both ends of the boom body 10;

[0055] A pair of spherical joint assemblies 2 are rotatably disposed in the spherical joint mounting through holes 100, and the spherical joint assemblies 2 include:

[0056] A ball joint 20 disposed in the ball joint mounting through hole 100;

[0057] A core shaft 21 is provided on the ball joint 20, wherein the central axis of the core shaft 21 passes through the center of the ball of the ball joint 20, and ball joint mounting holes 210 are provided at both ends of the core shaft 21;

[0058] The outer wall of the ball joint 20 is provided with a ball joint rubber jacket 22;

[0059] The boom clamping mechanism 3 includes:

[0060] An upper boom support 30 and a lower boom support 31 are provided above and below each other, and a space for limiting the movement of the ball joint assembly 2 is provided between the upper boom support 30 and the lower boom support 31;

[0061] The lifting lug mechanism 4 includes:

[0062] A pair of spaced-apart lifting lugs 40 , each having a lifting lug through hole 41 ;

[0063] One of the ear pieces 40 corresponds to one of the ball joint mounting holes 210 of the ball joint assembly 2;

[0064] The boom clamping mechanism 3 and the lifting ear mechanism 4 correspond to different ball joint assemblies 2 respectively.

[0065] The embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0066] See also Figures 1 to 5 As shown, an embodiment of the present application provides a suspension mechanism for a gearbox of an EMU, the suspension mechanism comprising:

[0067] A boom assembly 1, comprising:

[0068] A boom body 10, with ball joint mounting holes 100 provided at both ends of the boom body 10;

[0069] A pair of spherical joint assemblies 2 are rotatably disposed in the spherical joint mounting through holes 100, and the spherical joint assemblies 2 include:

[0070] A ball joint 20 disposed in the ball joint mounting through hole 100;

[0071] A core shaft 21 is provided on the ball joint 20, wherein the central axis of the core shaft 21 passes through the center of the ball of the ball joint 20, and ball joint mounting holes 210 are provided at both ends of the core shaft 21;

[0072] The outer wall of the ball joint 20 is provided with a ball joint rubber jacket 22;

[0073] The boom clamping mechanism 3 includes:

[0074] An upper boom support 30 and a lower boom support 31 are provided above and below each other, and a space for limiting the movement of the ball joint assembly 2 is provided between the upper boom support 30 and the lower boom support 31;

[0075] The lifting lug mechanism 4 includes:

[0076] A pair of spaced-apart lifting lugs 40 , each having a lifting lug through hole 41 ;

[0077] One of the ear pieces 40 corresponds to one of the ball joint mounting holes 210 of the ball joint assembly 2;

[0078] The boom clamping mechanism 3 and the lifting ear mechanism 4 correspond to different ball joint assemblies 2 respectively.

[0079] In the embodiment of the present application, while ensuring the smoothness and safety of the train operation, it has the functions of shock absorption and buffering, can effectively buffer the vibration from the track, reduce the damage of the vibration to the gearbox, protect the gearbox from damage, and at the same time improve the riding comfort of passengers.

[0080] The technical solution of the embodiment of the present application provides a method for hanging a gearbox of an EMU, which has a simple overall structure, is easy to arrange, and has low cost, and is particularly suitable for use on rail vehicles that have been put into operation;

[0081] When performing advanced repairs or disassembling inspections on the gearbox, you only need to loosen the connecting bolts between the ball joint and the frame, and between the ball joint and the gearbox to remove the gearbox as a whole. This makes the operation simple and the installation easy.

[0082] Furthermore, the boom upper support 30 and the boom lower support 31 are stacked up and down;

[0083] The boom upper support 30 includes:

[0084] Upper support back plate 300;

[0085] Two upper support lugs 301 arranged side by side on one side of the upper support back plate 300;

[0086] A U-shaped groove 3011 is provided between the upper support back plate 300 and the two upper support lifting ears 301;

[0087] The boom lower support 31 includes:

[0088] Lower support back plate 310;

[0089] Two lower support lugs 311 arranged side by side on one side of the lower support back plate 310;

[0090] A spherical groove 3111 is provided between the lower support back plate 310 and the two lower support lifting ears 311;

[0091] A connecting plate 32 is provided on the other side of the boom upper support 30;

[0092] A reinforcing plate 33 is provided on the other side of the boom lower support 31;

[0093] The connecting plate 32 and the reinforcing plate 33 are arranged in a T shape;

[0094] The two upper support lugs 301 and the two lower support lugs 311 are spaced apart and correspond to each other one by one;

[0095] The two upper support ears 301 , the two lower support ears 311 , the U-shaped groove 3011 and the spherical groove 3111 form a space for limiting the movement of the ball joint assembly 2 .

[0096] Furthermore, the upper support lug 301 is provided with an upper support lug through hole A;

[0097] The lower support lug 311 is provided with a lower support lug through hole B;

[0098] When the ball joint assembly 2 corresponding to the upper support 30 of the boom and the lower support 31 of the boom is located in the movable space formed by the two upper support ears 301, the two lower support ears 311, the U-shaped groove 3011 and the spherical groove 3111, the ball joint mounting hole 210 of the ball joint assembly 2 corresponds to one upper support ear through hole A and one lower support ear through hole B;

[0099] Each of the ball joint mounting holes 210 of the ball joint assembly 2 corresponding to the upper support 30 and the lower support 31 of the boom corresponds to an upper support ear through hole A and a lower support ear through hole B respectively.

[0100] Furthermore, one of the lifting ear through holes 41 corresponds to one of the ball joint mounting holes 210 .

[0101] It should be noted that the technical solutions according to the embodiments of this application are as follows:

[0102] The gearbox is mainly composed of large gear, small gear, bearing, box body, shaft end cover, etc.

[0103] The gearbox input shaft is connected to the coupling and the output shaft is connected to the axle. Its function is to transmit the torsional torque of the motor to the axle.

[0104] The suspension rod assembly 1 of the suspension mechanism includes the suspension rod body 10 and the ball joint assembly 2;

[0105] Its main function is to carry the weight of the gearbox and secure it to the bogie.

[0106] The boom assembly 1 is an integrated forging part, which is lightweight in design while ensuring strength requirements, thereby reducing the weight of the entire boom body.

[0107] Ball joint mounting through holes 100 are provided at both ends of the boom assembly 1 for press-fitting the gearbox boom ball joint, i.e., the ball joint 20 .

[0108] The ball joint 20 is provided with a core shaft 21 and a ball joint rubber cover 22 . The two ball joints 20 are respectively press-fitted into the ball joint mounting through holes 100 provided at both ends of the boom assembly 1 .

[0109] The core shaft 21 of the ball joint 20 and the ball joint rubber cover 22 are made of steel and are connected to both ends of the suspension rod assembly 1 by interference fit to transfer load and prevent slippage.

[0110] The other parts are rubber, which is composed of natural rubber-based elastomers and is chemically connected to metal parts to reduce vibration and noise of the vehicle body and provide flexible connections.

[0111] The ball joint 20 can effectively buffer the vibration and impact generated during the vehicle's driving while meeting the requirements of radial stiffness and deflection stiffness.

[0112] The boom assembly 1 is hung on the supporting structure of the frame by bolts. The supporting structure consists of a boom support, a connecting plate and a reinforcing plate.

[0113] The boom support is an integrated metal structure with a concave platform protruding forward on the upper part and a through hole for installing the ball joint 20. The middle part is a through semicircular hole structure, and the gearbox boom is vertically suspended from the gearbox through the hole.

[0114] The lower part of the boom support is an arc-shaped structure, which smoothly transfers the weight of the gearbox to the frame;

[0115] To ensure strength and achieve lightweight design, and reduce the stress on the boom support, the boom support is connected to the frame through a connecting plate and a reinforcing plate;

[0116] The supporting structure is reasonably designed and meets the requirements of use.

[0117] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0118] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0119] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A suspension mechanism for a gearbox of an EMU, characterized in that: The hanging mechanism comprises: A boom assembly (1), the boom assembly (1) comprising: A boom body (10), wherein both ends of the boom body (10) are provided with ball joint mounting through holes (100); A pair of spherical joint assemblies (2) are rotatably arranged in the spherical joint mounting through holes (100), and the spherical joint assemblies (2) include: A ball joint (20) disposed in the ball joint mounting through hole (100); A core shaft (21) is provided on the ball joint (20), wherein the central axis of the core shaft (21) passes through the center of the ball of the ball joint (20), and ball joint mounting holes (210) are provided at both ends of the core shaft (21); The outer wall of the ball joint (20) is provided with a ball joint rubber jacket (22); A boom clamping mechanism (3), the boom clamping mechanism (3) comprising: An upper boom support (30) and a lower boom support (31) are arranged above and below, and a space for limiting the movement of the ball joint assembly (2) is provided between the upper boom support (30) and the lower boom support (31); The lifting lug mechanism (4) comprises: A pair of hanging ear pieces (40) arranged at intervals, wherein the hanging ear pieces (40) are provided with hanging ear through holes (41); One of the hanging ear pieces (40) corresponds to a ball joint mounting hole (210) of the ball joint assembly (2); The suspension rod clamping mechanism (3) and the suspension ear mechanism (4) respectively correspond to different ball joint assemblies (2).

2. The suspension mechanism for the EMU gearbox according to claim 1, characterized in that: The upper boom support (30) and the lower boom support (31) are stacked up and down; The boom upper support (30) comprises: Upper support back plate (300); Two upper support lugs (301) arranged side by side on one side of the upper support back plate (300); A U-shaped groove (3011) is provided between the upper support back plate (300) and the two upper support lifting ears (301); The boom lower support (31) comprises: Lower support back plate (310); Two lower support lifting ears (311) arranged side by side on one side of the lower support back plate (310); A spherical groove (3111) is provided between the lower support back plate (310) and the two lower support lifting ears (311); A connecting plate (32) is provided on the other side of the boom upper support (30); A reinforcing plate (33) is provided on the other side of the boom lower support (31); The connecting plate (32) and the reinforcing plate (33) are arranged in a T-shape; The two upper support lifting ears (301) and the two lower support lifting ears (311) are spaced apart and correspond to each other one by one; The two upper support lugs (301), the two lower support lugs (311), the U-shaped groove (3011) and the spherical groove (3111) form a space for limiting the movement of the ball joint assembly (2).

3. The suspension mechanism for the EMU gearbox according to claim 2, characterized in that: The upper support lug (301) is provided with an upper support lug through hole (A); The lower support lug (311) is provided with a lower support lug through hole (B); When the ball joint assembly (2) corresponding to the boom upper support (30) and the boom lower support (31) is located in the movable space formed by the two upper support ears (301), the two lower support ears (311), the U-shaped groove (3011) and the spherical groove (3111), the ball joint mounting hole (210) of the ball joint assembly (2) corresponds to one upper support ear through hole (A) and one lower support ear through hole (B); Each of the ball joint mounting holes (210) of the ball joint assembly (2) corresponding to the upper boom support (30) and the lower boom support (31) corresponds to an upper support ear through hole (A) and a lower support ear through hole (B) above and below, respectively.

4. The suspension mechanism for the EMU gearbox according to claim 1, characterized in that: One of the lifting ear through holes (41) corresponds to one of the ball joint mounting holes (210).

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