Gearbox hanger, frame and vehicle

Abstract

The utility model relates to the field of railway vehicles, provide a gear box hanger, framework and vehicle. Gear box hanger includes hanger body, and the hanger body includes gear box connecting portion for connecting gear box, and the hanger body is the combined structure of hollow box type beam structure and forge piece welding, safety support, safety support sets up on hanger body and is located the below of gear box connecting portion, and safety support is used for providing vertical support to gear box when gear box and gear box connecting portion connection failure, limit stop, limit stop sets up on hanger body, and limit stop is used for limiting the moving stroke of gear box in the preset direction. The gear box hanger can greatly reduce the material consumption, realizes the weight reduction under the premise of guaranteeing rigidity, and forge piece is only used for the key stress area, avoids the overall weight gain, solves the gear box falling risk, guarantees the driving safety of railway vehicle. Can adapt to the gear box suspension demand of different types of railway vehicles, reduces the design cost of hanger.

Description

Technical Field

[0001] This utility model relates to the field of rail vehicles, and provides a gearbox mounting bracket, frame and vehicle. Background Technology

[0002] In traditional gearbox-equipment connection applications, a single, heavy mounting structure is often used. While this structure offers sufficient strength, it fails to achieve effective weight reduction, increasing the overall weight and load of the equipment. Furthermore, existing mounting designs have significant reliability deficiencies, particularly in preventing detachment and overshoot. For example, gearbox mountings used in rail vehicles, due to their flawed structural design, result in excessive weight, negatively impacting the equipment's load. During operation, factors such as vibration can cause the gearbox to detach, or overshoot may occur during sudden changes in operating conditions. These problems can threaten the safety and lifespan of the equipment.

[0003] While some existing suspension designs have made improvements in certain aspects, they still cannot adequately balance the requirements of strength and lightweighting, and lack stable anti-fall-off and anti-overshoot designs. Therefore, even with existing designs, problems such as heavy weight, poor reliability, and insufficient safety still exist. Utility Model Content

[0004] This utility model provides a gearbox hanger that can achieve a lighter design while ensuring sufficient strength, and improve the reliability of anti-fall and anti-overshooting, so as to meet the requirements of efficient and safe use.

[0005] This utility model embodiment also provides a framework.

[0006] This utility model embodiment also provides a vehicle.

[0007] The first aspect of this utility model provides a gearbox hanger, comprising: The hanger body includes a gearbox connection part for connecting the gearbox, and the hanger body is a combination structure welded from a hollow box beam structure and a forging. A safety support is provided on the main body of the suspension bracket and located below the gearbox connection. The safety support is used to provide vertical support for the gearbox when the connection between the gearbox and the gearbox connection fails. A limiting stop is provided on the suspension body, and the limiting stop is used to limit the movement of the gearbox in a preset direction.

[0008] According to one embodiment of the present invention, the hanging bracket body includes at least one mounting interface for connecting the frame, and the mounting interface is the forging.

[0009] According to one embodiment of the present invention, the gearbox connecting part includes a U-shaped opening for accommodating the gearbox boom, and connecting platforms disposed on both sides of the U-shaped opening.

[0010] According to one embodiment of the present invention, the safety support is a plate-shaped structural member integrally extended from or welded to the bottom of the hanging seat body.

[0011] According to one embodiment of the present invention, the safety bracket is provided with an anti-detachment pin hole for connecting the gearbox.

[0012] According to one embodiment of the present invention, the limiting stop is a protrusion structure provided on at least one side of the gearbox connection portion.

[0013] According to one embodiment of the present invention, the hanging base body further includes at least one reinforcing rib plate, which is welded to the box beam structure.

[0014] A second aspect of this utility model provides a frame including a crossbeam and a gearbox hanger as described above, wherein the gearbox hanger is welded to the crossbeam.

[0015] According to one embodiment of the present invention, the crossbeam is a hollow tubular crossbeam.

[0016] A third aspect of this utility model provides a vehicle including the gearbox mounting bracket as described above; Or it may include a framework as described above.

[0017] The gearbox suspension bracket provided according to the first aspect of this utility model can significantly reduce material usage, achieving weight reduction while ensuring rigidity. Furthermore, forgings are only used in critical load-bearing areas, avoiding overall weight increase, which aligns with the development trend of lightweight and energy-saving rail vehicles, indirectly reducing wheel-rail wear and traction system energy consumption. The safety bracket can immediately support the gearbox in case of connection failure, stabilizing it with vertical support force to eliminate the risk of gearbox detachment and ensure the safe operation of the rail vehicle. During vehicle assembly, only the bracket body needs to be connected to the frame and gearbox; no on-site welding or adjustment of the safety bracket or limit stop is required, reducing assembly steps and time and improving production efficiency. The structure of the gearbox connection can be adjusted according to the suspension interface of different gearbox models, and the support surface area of ​​the safety bracket and the position of the limit stop can also be flexibly adjusted without changing the core structure of the bracket body. This allows it to adapt to the gearbox suspension requirements of different types of rail vehicles such as EMUs, subways, and light rails, reducing the cost of redesigning the bracket during vehicle upgrades.

[0018] According to the framework provided in the second aspect of this utility model, the crossbeam adopts a hollow tubular structure, combined with the hollow box-shaped beam design of the gearbox hanger. This reduces material usage while ensuring overall strength through the tubular shell structure and forging reinforcement, preventing a decrease in load-bearing capacity due to lightweighting. The lightweight framework reduces the overall weight of the vehicle, decreases the energy consumption of the traction system, and reduces wear between the wheel and rail, extending the service life of the wheelset and track. The welded rigid connection between the gearbox hanger and the crossbeam, compared to traditional bolted connections, eliminates the risk of connection gaps or loosening, and can stably transmit the weight and dynamic load of the gearbox. The safety bracket supports the gearbox in case of connection failure, preventing it from falling onto the track; the limit stop restricts the overshoot movement of the gearbox, avoiding damage to the connecting components due to inertial forces. Compared to the single protection of traditional frameworks that rely solely on bolt fixing, this framework provides more comprehensive protection, significantly reducing the risk of rail traffic accidents caused by gearbox detachment and ensuring vehicle operation safety.

[0019] According to the vehicle provided in the third aspect embodiment of this utility model, the anti-detachment and anti-overshoot design of the wheel box hanger provides dual safety protection for the vehicle's transmission system, preventing the gearbox from detaching or moving excessively during operation, thus preventing rail traffic accidents and ensuring the safety of passengers and equipment. The lightweight design of the gearbox hanger and frame reduces the overall weight of the vehicle, lowering traction system energy consumption and wheel-rail wear; at the same time, the high durability design of the hanger body and frame reduces maintenance frequency, and the convenient disassembly and assembly of the gearbox simplifies the maintenance process, reducing the time and economic costs of vehicle operation and maintenance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model 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 utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic perspective view of the gearbox hanger provided by this utility model from one angle.

[0022] Figure 2 This is a schematic perspective view of the gearbox hanger provided by this utility model from another angle.

[0023] Figure 3 This is a schematic side view of the gearbox hanger provided by this utility model.

[0024] Figure 4 This is a schematic perspective view of the installation of the gearbox hanger and the frame beam provided by this utility model.

[0025] Figure label: 100. Hanger body; 102. Gearbox connection; 104. Safety support; 106. Limit stop; 108. Installation interface; 110. U-shaped opening; 112. Connecting platform; 114. Anti-detachment pin hole; 116. Reinforcing rib; 118. Crossbeam. Detailed Implementation

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0027] like Figures 1 to 4 As shown, the first aspect of this utility model provides a gearbox hanger, comprising: The hanger body 100 includes a gearbox connection part 102 for connecting the gearbox, and the hanger body 100 is a combination structure of a hollow box beam structure and a forging welded together. Safety support 104 is provided on the lifting body 100 and located below the gearbox connection part 102. Safety support 104 is used to provide vertical support for the gearbox when the connection between the gearbox and the gearbox connection part 102 fails. Limit stop 106 is provided on the hanger body 100 and is used to limit the movement of the gearbox in a preset direction.

[0028] According to the first aspect of the present invention, the gearbox suspension bracket can significantly reduce material usage, achieving weight reduction while ensuring rigidity. Furthermore, forgings are only used in critical load-bearing areas, avoiding overall weight increase, which aligns with the development trend of lightweight and energy-saving rail vehicles, indirectly reducing wheel-rail wear and traction system energy consumption. The safety bracket 104 can immediately support the gearbox in case of connection failure, stabilizing it with vertical support force to eliminate the risk of gearbox detachment and ensure the safety of rail vehicle operation. During vehicle assembly, only the bracket body 100 needs to be connected to the frame and gearbox; there is no need for on-site welding or adjustment of the safety bracket 104 or the limiting stop 106, reducing assembly steps and time and improving production efficiency. The structure of the gearbox connection part 102 can be adjusted according to the suspension interface of different gearbox models. The supporting surface area of ​​the safety bracket 104 and the position of the limiting stop 106 can also be flexibly adjusted without changing the core structure of the bracket body 100, thus adapting to the gearbox suspension requirements of different types of rail vehicles such as EMUs, subways, and light rails, reducing the cost of redesigning the bracket during vehicle upgrades.

[0029] Please continue reading Figures 1 to 4The gearbox suspension provided in the first aspect of this utility model addresses the problem of balancing lightweight and high strength in the suspension of rail vehicle gearboxes, as well as insufficient safety protection. Through a combination structure design of hollow box beams and forgings, coupled with the dual protection of safety support 104 and limit stop 106, stable suspension and risk control of the gearbox are achieved.

[0030] The main body 100 of the gearbox hanger is the main structure of the gearbox hanger. It adopts a combination of hollow box structure and forgings, which takes into account both lightweight and high strength. Its core function is to connect the frame and the gearbox, transmit the load, and provide an installation foundation for the safety support 104 and the limit stop 106.

[0031] Specifically, the hollow box girder structure uses high-strength metal plates welded together to form a closed box-shaped section. The hollow internal design significantly reduces material usage, while the shell structure's characteristics enhance overall bending and torsional rigidity, avoiding the problems of traditional solid structures being heavy and lacking rigidity. The surface of the box girder structure is smoothed, and pre-installed welding interfaces for safety supports 104 and limit stops 106 are precisely positioned to ensure accurate installation of subsequent components.

[0032] The forgings are made of high-strength alloy materials through a forging process, possessing superior strength and toughness compared to ordinary plates. They are integrated with the box girder structure through full welding. The forgings are distributed in key load-bearing areas of the hanger body 100, such as the installation interface 108 used to connect the frame and the gearbox connection part 102 that directly contacts the gearbox. The forgings enhance the local load-bearing capacity and prevent structural deformation or cracking under high loads.

[0033] The gearbox connection part 102 is located on one side of the box girder structure for direct connection of the gearbox. The structure of the connection part is adapted to the suspension method of the gearbox, and the surface is provided with mounting holes or reserved docking structure to ensure that the gearbox can be stably fixed by bolts, pins and other connecting parts, while rigidly connected to the forging to transfer the gearbox load to the box girder structure.

[0034] The safety support 104 is a plate-shaped metal structure that is fixed to the bottom of the lifting base body 100 by welding or integral extension, and is located directly below the gearbox connection part 102. Its core function is to support the gearbox and provide vertical support to prevent it from falling when the connection between the gearbox and the connection part fails.

[0035] The limit stop 106 is a protruding metal structure that is welded to the hanger body 100 and distributed around the gearbox connection part 102. Its core function is to limit the movement of the gearbox in a preset direction and prevent excessive movement of the gearbox during sudden changes in working conditions, which could lead to component interference or connection damage.

[0036] According to one embodiment of the present invention, the hanging bracket body 100 includes at least one mounting interface 108 for connecting the frame, and the mounting interface 108 is a forging.

[0037] In one embodiment of this utility model, the mounting interface 108 is part of a forging and is integrally connected to the box-beam structure of the hanger body 100 by welding. The forging is made of high-strength alloy material by forging process, and its shape is designed as lug or flange according to the connection requirements of the frame. The surface of the mounting interface 108 is provided with through holes for bolts to pass through, and the inner wall of the through holes is smoothed to reduce friction during bolt installation.

[0038] The number of mounting interfaces 108 is determined based on the connection strength requirements between the hanger body 100 and the frame, typically two or four, symmetrically distributed on both sides or ends of the box girder structure. During welding, the contact surfaces of the forging and the box girder structure are fully welded, with the weld height matching the forging thickness to ensure a firm and gapless connection. The positions of the mounting interfaces 108 precisely correspond to the preset connection points of the frame's crossbeams 118. When the hanger body 100 is assembled with the frame, bolts pass through the through holes of the mounting interfaces 108 and are screwed into the threaded holes of the frame's crossbeams 118, achieving rigid fixation through tightening with nuts.

[0039] In addition, the welding parts between the forging and the box girder structure are provided with transition fillets to avoid stress concentration. At the same time, the edges of the mounting interface 108 are rounded to prevent scratches to operators or other parts during assembly.

[0040] Forgings have higher strength and toughness than ordinary steel plates. As an installation interface 108, it can withstand the dynamic load between the hanger body 100 and the frame, avoid the interface from breaking due to insufficient strength, ensure that the gearbox is stably connected to the frame through the hanger body 100, and reduce the risk of the gearbox falling off.

[0041] The mounting interface 108 and the frame beam 118 are precisely connected at their preset connection points. The bolt connection method enables the quick positioning and fixing of the hanger body 100 without the need for on-site adjustment or processing, reducing assembly time. At the same time, it ensures that the hanger body 100 is stable after installation, avoiding interference between the gearbox and other components due to installation deviation.

[0042] According to one embodiment of the present invention, the gearbox connection part 102 includes a U-shaped opening 110 for accommodating the gearbox boom, and a connection platform 112 disposed on both sides of the U-shaped opening 110.

[0043] In one embodiment of this utility model, a U-shaped opening is formed on one side of the suspension body 100, with the opening direction facing the gearbox. The width and height of the opening are designed according to the diameter and length of the gearbox suspension rod to ensure that the suspension rod can be smoothly inserted into the opening without significant shaking. The inner wall of the U-shaped opening is rounded to avoid sharp edges scratching the surface of the suspension rod or causing stress concentration during vibration.

[0044] The connecting platform 112 is a rectangular flat plate structure extending from both sides of the U-shaped opening. It is integrally formed or welded to the box beam structure of the hanger body 100. The platform surface is flat and perpendicular to the axis of the U-shaped opening. Each connecting platform 112 has threaded holes for connecting bolts, and the positions of the threaded holes precisely correspond to the mounting holes at the ends of the gearbox booms. When the gearbox is connected to the hanger body 100, the gearbox boom is placed into the U-shaped opening, the mounting holes at the ends of the booms are aligned with the threaded holes of the connecting platform 112, the bolts pass through the mounting holes and are screwed into the threaded holes, and the booms are fixed to the connecting platform 112 by tightening the nuts, thereby realizing the connection between the gearbox and the hanger body 100.

[0045] In addition, the edges of the connecting platform 112 are provided with reinforced flanges to enhance the platform's resistance to bending, prevent the platform from deforming when the bolts are tightened, and ensure the stability of the connection.

[0046] The U-shaped opening design allows the gearbox boom to be inserted directly from above the opening without complicated alignment operations, greatly simplifying the assembly process compared to traditional closed interfaces. The threaded holes of the connecting platform 112 are precisely aligned with the boom mounting holes, and the bolt fixing method is quick and reliable, reducing gearbox assembly time and improving overall production efficiency.

[0047] The smooth inner wall of the U-shaped opening avoids rigid friction between the hanger and the interface, reducing wear on the hanger surface. At the same time, the opening structure provides a certain amount of movement margin for the hanger during vibration, avoiding stress concentration caused by rigid constraints, extending the service life of the hanger, and reducing the risk of gearbox connection failure due to hanger damage.

[0048] According to one embodiment of the present invention, the safety support 104 is a plate-shaped structural member integrally extended from or welded to the bottom of the suspension body 100.

[0049] In one embodiment of this utility model, if the safety support 104 is an integral extension structure, it is made of the same metal material as the box beam structure of the suspension body 100 through cutting and bending processes. The extension direction is directly below the gearbox connection part 102, forming a horizontal plate-shaped support surface. The area of ​​the support surface is larger than the area of ​​the contact area between the bottom of the gearbox and the safety support 104, ensuring that the gearbox can be fully supported.

[0050] If the safety support 104 is a welded structure, a metal plate of the same material as the box girder structure is used and fixed to the bottom of the lifting base body 100 by full welding. The welded part covers the edge of the safety support 104 that fits with the box girder structure, and the weld height matches the thickness of the safety support 104 to ensure a firm connection. The supporting surface of the safety support 104 is flat, with no protrusions or depressions, to avoid local stress concentration when in contact with the bottom of the gearbox.

[0051] Regardless of the molding method used, the edges of the safety support 104 are rounded to prevent scratches on the gearbox surface or operators. At the same time, the position of the safety support 104 is precisely aligned with the gearbox connection part 102. When the connection between the gearbox and the connection part fails, the gearbox can fall vertically onto the support surface of the safety support 104. The safety support 104 bears the weight of the gearbox through its own strength, preventing the gearbox from falling further.

[0052] The safety support 104 is located below the gearbox connection part 102. When the connection between the gearbox and the connection part fails, the safety support 104 can immediately support the gearbox to prevent it from falling onto the track and avoid causing serious equipment accidents or safety hazards, thus providing a key safety barrier for the transmission system of the rail vehicle.

[0053] The integrated or welded plate structure eliminates the need for complex moving parts, making it less prone to failure during long-term use and requiring less frequent maintenance. Meanwhile, the large-area contact between the support surface of the safety bracket 104 and the bottom of the gearbox can distribute the weight load of the gearbox, preventing excessive local stress from causing deformation of the safety bracket 104 and ensuring its long-term stable protective function.

[0054] According to one embodiment of the present invention, the safety bracket 104 is provided with an anti-detachment pin hole 114 for connecting the gearbox.

[0055] In one embodiment of this utility model, anti-detachment pin holes 114 are formed on the support surface of the safety holder 104 near the edge, and there are two or four of them, symmetrically distributed on both sides of the support surface. The diameter of the hole is adapted to the diameter of the anti-detachment pin, the depth of the hole penetrates the thickness of the safety holder 104, and the inner wall of the hole is smoothed to facilitate the insertion of the anti-detachment pin.

[0056] When the gearbox is normally installed on the gearbox connection part 102 of the hanger body 100, the anti-detachment pin passes through the anti-detachment pin hole 114 and is inserted into the preset positioning hole at the bottom of the gearbox. The length of the anti-detachment pin is greater than the total thickness of the safety bracket 104 and the bottom of the gearbox. After insertion, it is locked by a cotter pin or nut to prevent the anti-detachment pin from falling off. The anti-detachment pin is made of high-strength metal material and has sufficient shear resistance to limit the horizontal movement of the gearbox.

[0057] In addition, the edge of the anti-detachment pin hole 114 is provided with a countersunk groove, and the head of the anti-detachment pin can be embedded in the countersunk groove to prevent the head of the anti-detachment pin from protruding and affecting the fit between the safety support 104 and the bottom of the gearbox, while also preventing the protruding part from scratching other parts or operators.

[0058] The anti-detachment pin engages with the positioning hole at the bottom of the gearbox through the anti-detachment pin hole 114. In addition to the vertical support of the safety bracket 104, it can also restrict the horizontal movement of the gearbox, preventing the gearbox from shifting laterally due to vibration or connection failure, and further reducing the risk of the gearbox falling off. The anti-detachment effect is more significant, especially under conditions such as sharp turns and sudden braking of the vehicle.

[0059] The installation and removal of the anti-detachment pin does not require complicated tools, and operators can quickly insert and remove it. During normal maintenance of the gearbox, the gearbox can be removed from the hanger body 100 simply by removing the anti-detachment pin, without increasing the difficulty of maintenance. At the same time, the locking method of the anti-detachment pin is simple and reliable, preventing the anti-detachment pin from falling off on its own during vehicle operation and ensuring that the anti-detachment function is effective for a long time.

[0060] According to one embodiment of the present invention, the limiting stop 106 is a protrusion structure provided on at least one side of the gearbox connection portion 102.

[0061] In one embodiment of this utility model, the limiting stop 106 is a metal protrusion, which is fixed to the box beam structure of the hanger body 100 by welding or integral molding, and is set on one or both sides of the gearbox connection part 102. The height of the protrusion is higher than the connecting platform 112 of the gearbox connection part 102, the width of the protrusion is adapted to the side profile of the gearbox, and the surface of the protrusion facing the gearbox is flattened to maintain a small gap with the side of the gearbox.

[0062] When the gearbox is installed in the gearbox connection part 102, the side of the gearbox is opposite to the protrusion surface of the limit stop 106. If the gearbox tends to move in a preset direction due to vibration or sudden change in operating conditions during vehicle operation, the side of the gearbox will contact the protrusion of the limit stop 106. The protrusion blocks the gearbox from moving further by its own rigidity, thus limiting its movement stroke.

[0063] In addition, the top of the protrusion of the limit stop 106 is rounded to avoid scratching the surface of the gearbox when it comes into contact with the gearbox; the connection between the protrusion and the box beam structure is reinforced with ribs to enhance the impact resistance of the protrusion and prevent the protrusion from breaking or deforming due to excessive force.

[0064] The limit stop 106 can effectively limit the movement of the gearbox in the preset direction, prevent the gearbox from being over-traveled and causing the bolts and hanger rods of the gearbox connection part 102 to bear excessive tensile or shear force, reduce damage to the connecting parts, extend their service life, and at the same time prevent the connection between the gearbox and the hanger body 100 from loosening, ensuring the stability of the transmission system.

[0065] Under complex operating conditions such as rapid acceleration, sudden braking, or traversing bumpy roads, the gearbox is prone to generating large inertial forces. The protrusion structure of the limit stop 106 can quickly block the excessive movement of the gearbox, prevent the gearbox from colliding with other components, prevent component damage or transmission failure, and improve the driving safety of rail vehicles.

[0066] According to one embodiment of the present invention, the hanging base body 100 further includes at least one reinforcing rib plate 116, which is welded to the box beam structure.

[0067] In one embodiment of this utility model, the reinforcing rib 116 is a triangular or rectangular metal plate, made of the same material as the box girder structure, and is welded to the inner or outer wall of the box girder structure by full welding. If welded to the inner wall, the reinforcing rib 116 is distributed along the length or height of the box girder structure, and its two ends are welded to the upper and lower flat plates or webs of the box girder structure, respectively; if welded to the outer wall, the reinforcing rib 116 is distributed at the corners or stress concentration areas of the box girder structure.

[0068] The number of stiffening ribs 116 is determined based on the length and stress conditions of the box girder structure. The number of ribs is increased in areas with longer lengths or higher stress levels to ensure even load distribution. The thickness of the ribs is matched to the wall thickness of the box girder structure to avoid excessive weight increase due to excessive thickness or insufficient reinforcement due to insufficient thickness. During welding, the contact surfaces between the ribs and the box girder structure are fully welded, ensuring a secure connection without any incomplete welds or porosity.

[0069] In addition, the edges of the reinforcing rib 116 are rounded to avoid stress concentration and reduce airflow resistance inside the box girder structure, without affecting other functions of the hanger body 100.

[0070] The stiffening rib 116 can effectively improve the bending and torsional rigidity of the box girder structure, prevent the box girder from bending or torsional deformation when bearing the weight of the gearbox or dynamic load, ensure the overall structural stability of the hanger body 100, and ensure that the positional accuracy of the gearbox connection part 102 and the installation interface 108 is not affected, thereby ensuring the normal transmission of the gearbox.

[0071] The stiffening rib 116 can disperse the concentrated stress of the box girder structure to a larger area, reduce local stress peaks, reduce fatigue damage to the box girder structure, extend the service life of the hanger body 100, and reduce maintenance costs caused by deformation or cracking of the box girder.

[0072] A second aspect of this utility model provides a frame including a crossbeam 118 and a gearbox hanger as described above, the gearbox hanger being welded to the crossbeam 118.

[0073] The frame provided in the second aspect of this utility model addresses the coordinated needs of the transmission system and the load-bearing structure of rail vehicles. Through the rigid integrated design of the crossbeam 118 and the gearbox hanger, it achieves stable load-bearing and power transmission of the gearbox, while also taking into account the lightweight and structural strength of the frame.

[0074] The crossbeam 118 is a key transverse structure of the frame. It is made of high-strength alloy and has mechanical properties that resist bending and torsion. Its core function is to connect the longitudinal side beams of the frame to form a frame-type load-bearing structure, while providing a stable installation benchmark for the gearbox hanger.

[0075] The gearbox hanger is fixed to the pre-installed area of ​​the crossbeam 118 by welding, forming an inseparable rigid connection with the crossbeam 118. Its core function is to support the gearbox and transfer the weight and power load of the gearbox to the crossbeam 118.

[0076] According to the framework provided in the second aspect of this utility model, the crossbeam 118 adopts a hollow tubular structure, which, combined with the hollow box beam design of the gearbox hanger, reduces material usage while ensuring overall strength through the characteristics of the tubular shell structure and forging reinforcement, avoiding a decrease in load-bearing capacity due to lightweighting. The lightweight framework reduces the overall weight of the vehicle, reduces the energy consumption of the traction system, and also reduces wear between the wheels and rails, extending the service life of the wheelsets and rails. The welded rigid connection between the gearbox hanger and the crossbeam 118, compared to traditional bolt connections, eliminates the risk of connection gaps or loosening, and can stably transmit the weight and dynamic load of the gearbox. The safety bracket 104 supports the gearbox in case of connection failure, preventing it from falling onto the rails; the limit stop 106 restricts the overshoot movement of the gearbox, avoiding damage to the connecting components due to inertial forces. Compared to the single protection of traditional frameworks that rely solely on bolt fixation, this framework provides more comprehensive protection, significantly reducing the risk of rail traffic accidents caused by gearbox detachment and ensuring vehicle operation safety.

[0077] According to one embodiment of the present invention, the crossbeam 118 is a hollow tubular crossbeam 118.

[0078] In one embodiment of this utility model, the tubular crossbeam 118 is made of high-strength alloy steel pipe with a circular or rectangular cross-section. The inner wall of the pipe is smoothed to reduce internal stress concentration. The length of the crossbeam 118 is adapted to the width of the frame, and both ends are welded and fixed to the side beams of the frame to form a rigid frame structure. The wall thickness of the tubular crossbeam 118 is designed according to the load-bearing requirements of the frame to ensure that it can withstand the weight and dynamic load of the gearbox hanger and gearbox.

[0079] The mounting interface 108 of the gearbox hanger is fixed to a predetermined position on the tubular crossbeam 118 by welding. The welded area covers the contact area between the mounting interface 108 and the crossbeam 118, and the weld is reinforced to ensure a firm and gapless connection. The tubular crossbeam 118 also has perforated holes for weight reduction. The shape of the perforated holes is circular or rectangular, and their number and location are determined based on the stress distribution of the crossbeam 118, avoiding areas of concentrated stress to ensure that the strength of the crossbeam 118 is not affected.

[0080] In addition, the surface of the tubular crossbeam 118 is treated with anti-corrosion to prevent corrosion caused by environmental humidity or dust during long-term use and extend the service life of the crossbeam 118; the ends of the crossbeam 118 are equipped with sealing plates to prevent dust and impurities from entering the tube and to prevent internal corrosion or blockage.

[0081] A third aspect of this utility model provides a vehicle including the gearbox mounting bracket as described above; Or it may include a framework as described above.

[0082] The vehicle is a rail vehicle. Each car has multiple frames installed underneath it. At least one gearbox hanger is fixed to each frame by welding. The gearbox connection part 102 of the gearbox hanger is connected to the gearbox's lifting rod. The safety support 104 is located below the gearbox. The limit stop 106 restricts the movement of the gearbox.

[0083] When the vehicle is in motion, the gearbox is stably connected to the frame via the gearbox hanger, and power is transmitted to the wheels through the gearbox to drive the vehicle forward. When the vehicle encounters vibration, impact, or sudden changes in operating conditions, the safety bracket 104 of the gearbox hanger cooperates with the anti-detachment pin hole 114 to prevent the gearbox from falling off, the limit stop 106 restricts the gearbox from overshooting, and the reinforcing rib 116 and the tubular crossbeam 118 ensure the rigidity of the hanger body 100 and the frame to avoid structural deformation.

[0084] During vehicle maintenance, operators can quickly remove the gearbox for inspection by unscrewing the bolts or anti-loosening pins of the gearbox hanger connecting platform 112. After inspection, it can be reassembled without disassembling the frame or hanger body 100, simplifying the maintenance process. Simultaneously, the vehicle's control system can monitor the connection status of the gearbox hanger in real time, issuing timely warnings if any abnormalities are detected to ensure safe vehicle operation.

[0085] According to the third aspect embodiment of this utility model, the anti-detachment and anti-overshoot design of the wheel box hanger provides dual safety protection for the vehicle's transmission system, preventing the gearbox from detaching or moving excessively during operation, thus preventing rail traffic accidents and ensuring the safety of passengers and equipment. The lightweight design of the gearbox hanger and frame reduces the overall weight of the vehicle, lowering traction system energy consumption and wheel-rail wear; at the same time, the high durability design of the hanger body 100 and the frame reduces maintenance frequency, and the convenient disassembly and assembly of the gearbox simplifies the maintenance process, reducing the time and economic costs of vehicle operation and maintenance.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model 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. Such 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 this utility model.

Claims

1. A gearbox hanger, characterized in that, include: The hanger body includes a gearbox connection part for connecting the gearbox, and the hanger body is a combination structure welded from a hollow box beam structure and a forging. A safety support is provided on the main body of the suspension bracket and located below the gearbox connection. The safety support is used to provide vertical support for the gearbox when the connection between the gearbox and the gearbox connection fails. A limiting stop is provided on the suspension body, and the limiting stop is used to limit the movement of the gearbox in a preset direction.

2. The gearbox hanger according to claim 1, characterized in that, The hanger body includes at least one mounting interface for connecting the frame, and the mounting interface is the forging.

3. The gearbox hanger according to claim 1 or 2, characterized in that, The gearbox connection includes a U-shaped opening for accommodating the gearbox boom, and connection platforms disposed on both sides of the U-shaped opening.

4. The gearbox hanger according to claim 1, characterized in that, The safety support is a plate-shaped structural component that extends integrally from the bottom of the suspension body or is welded together.

5. The gearbox hanger according to claim 4, characterized in that, The safety bracket is provided with anti-detachment pin holes for connecting the gearbox.

6. The gearbox hanger according to claim 1 or 2, characterized in that, The limiting stop is a protrusion structure provided on at least one side of the gearbox connection portion.

7. The gearbox hanger according to claim 1 or 2, characterized in that, The suspension base body also includes at least one reinforcing rib plate, which is welded to the box girder structure.

8. A framework, characterized in that, It includes a crossbeam and a gearbox hanger as described in any one of claims 1 to 7, the gearbox hanger being welded to the crossbeam.

9. The framework according to claim 8, characterized in that, The crossbeam is a hollow tubular crossbeam.

10. A vehicle, characterized in that, Includes the gearbox hanger as described in any one of claims 1 to 7; Or it may include the framework as described in any one of claims 8 to 9.

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