Bogie frame, bogie and motor vehicle

Abstract

The present invention discloses a bogie frame, a bogie and a motor vehicle, and relates to the technical field of bogies. The bogie frame includes two side beams, a first crossbeam and a second crossbeam; the first crossbeam and the second crossbeam are both connected to one of the side beams at one end and connected to the other side beam at the other end; along the length direction of the side beam, the side beam includes a middle section and end sections arranged at both ends of the middle section, the width of the end section is greater than the width of the middle section; and the middle section is a bent structure with an arc-shaped recess; the first crossbeam and the second crossbeam are both hollow tubular structures. The structural layout of the bogie frame provided by the present invention is more compact; the width of the end section of the side beam is greater than the width of the middle section, which facilitates the installation of spring sleeves on the end sections and improves the reliability of the installation of the spring sleeves. In addition, the first crossbeam and the second crossbeam are both configured as hollow tubular structures, which is conducive to reducing the weight of the bogie frame and achieving lightweighting of the bogie frame.

Description

Technical Field

[0001] The present invention relates to the technical field of bogies, and more specifically, to a bogie frame. In addition, the present invention also relates to a bogie including the bogie frame and a motor vehicle including the bogie. Background Art

[0002] The bogie frame structure directly affects the operating performance of railway vehicles. In traditional bogies, the wheels and axle boxes are arranged on the inside of the frame, resulting in large wheel sets and frame mass, difficulty in passing small radius curves, and poor adaptability to line distortion.

[0003] In order to install external components, the current bogie frame needs to widen the middle position of the measurement, which takes up a certain amount of installation space and further increases the overall size of the bogie.

[0004] In summary, how to reduce the space occupied by the bogie frame is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the object of the present invention is to provide a bogie frame, in which the side beams are set to a structure that is low in the middle and high at both ends, narrow in the middle and wide at both ends, which can effectively reduce the space occupied by the bogie, and the first cross beam and the second cross beam are set to a hollow structure, which is conducive to reducing the weight of the bogie frame.

[0006] Another object of the present invention is to provide a bogie comprising the above-mentioned bogie frame and a motor vehicle comprising the above-mentioned bogie.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A bogie frame comprises two side beams, a first cross beam and a second cross beam; the first cross beam and the second cross beam are each connected to one of the side beams at one end and to the other side beam at the other end;

[0009] Along the length direction of the side beam, the side beam includes a middle section and end sections provided at both ends of the middle section, the width of the end sections is greater than the width of the middle section; and the middle section is a bent structure with an arc-shaped concave portion;

[0010] The first crossbeam and the second crossbeam are both hollow tubular structures.

[0011] Optionally, a brake caliper mounting seat is provided on the outer side of the side beam, and the brake caliper mounting seat is provided with a first positioning bolt hole and a second positioning bolt hole, the axial direction of the first positioning bolt hole is perpendicular to the axial direction of the second positioning bolt hole, and the axis of the first positioning bolt hole is arranged along the height direction of the side beam.

[0012] Optionally, an arc-shaped extension piece is provided at the bottom of the middle section of the side beam, and a lateral shock absorber mounting seat is connected to the bottom of the extension piece, and the lateral shock absorber mounting seat is used to install the lateral shock absorber.

[0013] Optionally, two spring sleeves are provided at both ends of the side beam, and adjacent spring sleeves are spaced apart;

[0014] A groove for installing a spring is provided in the spring sleeve, the spring sleeve is embedded in the inside of the side beam, and an outward-turned folded edge is provided at the bottom of the spring sleeve.

[0015] Optionally, a wheelset lifting seat is provided on the inner side of the side beam, and the wheelset lifting seat is used to fix the wheelset to the side beam;

[0016] Vertical vibration damper mounting seats are provided at both ends of the side beam in the length direction, and the vertical vibration damper mounting seats are used to mount vertical vibration dampers;

[0017] A pull rod seat is provided at the bottom of the side beam, and a positioning cylinder is provided between adjacent spring sleeves. The positioning cylinder cooperates with the pull rod seat to fix the axle box body.

[0018] Optionally, the first crossbeam is provided with a hollow chamber, and the hollow chamber passes through both ends of the first crossbeam along the axial direction of the first crossbeam; both ends of the axial direction of the first crossbeam are provided with torsion bar mounting seats, and the two ends of the anti-roll torsion bar in the length direction are respectively connected to the two torsion bar mounting seats, and the anti-roll torsion bar is located in the hollow chamber.

[0019] Optionally, the first crossbeam is provided with two motor mounting seats, a first gearbox hanger and a vertical stop mounting seat, the second crossbeam is provided with a motor mounting seat, a second gearbox hanger and a traction rod seat, and the vertical stop mounting seat is provided on a side of the first crossbeam facing the second crossbeam;

[0020] The traction rod seat is arranged at the middle cross section of the second cross beam in the axial direction.

[0021] Optionally, the first gear box hanger and the second gear box hanger are both provided with a first mounting hole and a second mounting hole, the axial direction of the first mounting hole is set along the height direction of the first beam, and the axial direction of the second mounting hole is perpendicular to the axial direction of the first mounting hole, the first gear box hanger and the second gear box hanger are both thin in the middle and wide at both ends, and the first gear box hanger and the second gear box hanger are both provided with a limiting hole, which is used to cooperate with the gear box to limit the installation position of the gear box.

[0022] Optionally, an integrated seat is provided at an axial end of the first crossbeam, the integrated seat comprising a height valve mounting seat and the torsion bar mounting seat, the height valve mounting seat and the torsion bar mounting seat being an integrated structure;

[0023] The integrated seat is provided with five installation positions along the circumferential direction, one of the installation positions is used for installing the height valve, and the other four installation positions are used for installing the anti-roll torsion bars.

[0024] Optionally, an upper cover plate is provided at a middle position in the longitudinal direction of the side beam, one side of the upper cover plate extends toward the outer side of the side beam along the longitudinal direction of the cross beam to form a first wing-shaped extension portion, and the first wing-shaped extension portion is provided with an anti-snaking shock absorber mounting seat;

[0025] The other side of the upper cover plate extends along the length direction of the cross beam toward the inner side of the side beam to form a longitudinal auxiliary beam;

[0026] The first side of the longitudinal auxiliary beam is connected to the first cross beam, the second side of the longitudinal auxiliary beam is connected to the second cross beam, and the third side of the longitudinal auxiliary beam is connected to the side beam; the first side and the second side of the longitudinal auxiliary beam are arranged to be separated from each other.

[0027] A bogie comprises the bogie frame described in any one of the above items.

[0028] A motor vehicle comprises the bogie frame described in any one of the above items.

[0029] During use of the bogie frame provided by the present invention, since the side beams are configured with a low center and high ends, the arc-shaped recesses formed in the middle sections can be used to mount other structural components, making the bogie frame more compact. Furthermore, the width of the end sections of the side beams is greater than that of the middle section, facilitating the installation of spring sleeves in the end sections and improving the reliability of the spring sleeve installation. Furthermore, both the first and second cross beams are configured as hollow tubular structures, which helps reduce the weight of the bogie frame and achieve lightweighting.

[0030] In addition, the present invention also provides a bogie including the above-mentioned bogie frame and a motor vehicle including the above-mentioned bogie. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0032] Figure 1A schematic structural diagram of a specific embodiment of the bogie frame provided by the present invention;

[0033] Figure 2 This is a structural schematic diagram of the bogie frame provided by the present invention from another angle;

[0034] Figure 3 It is a structural diagram of the brake caliper mounting seat;

[0035] Figure 4 It is a structural diagram of the integrated seat;

[0036] Figure 5 This is a structural diagram of the first gearbox hanger.

[0037] Figure 1-Figure 5 middle:

[0038] 1-side beam, 2-first cross beam, 3-second cross beam, 4-brake caliper mounting seat, 410-first positioning bolt hole, 420-second positioning bolt hole, 5-lateral shock absorber mounting seat, 6-spring sleeve, 7-wheel set lifting seat, 8-vertical shock absorber mounting seat, 9-pull rod seat, 10-integrated seat, 110-height valve mounting seat, 120-torsion bar mounting seat, 11-upper cover, 12-anti-snaking shock absorber mounting seat, 13-longitudinal auxiliary beam, 1310-mounting platform, 1320-bending part, 14-air spring support seat, 15-positioning cylinder, 16-traction rod seat, 17-vertical stop mounting seat, 18-accessory mounting seat, 19-single motor mounting seat, 20-two-position motor mounting seat, 21-first gearbox hanging seat, 22-second gearbox hanging seat, 210-first mounting hole, 220-second mounting hole. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0040] The core of the present invention is to provide a bogie frame, in which the side beams are set to a structure that is low in the middle and high at both ends, narrow in the middle and wide at both ends, which can effectively reduce the space occupied by the bogie, and the first cross beam and the second cross beam are set to a hollow structure, which is conducive to reducing the weight of the bogie frame.

[0041] Another core of the present invention is to provide a bogie including the above-mentioned bogie frame and a motor vehicle including the above-mentioned bogie.

[0042] It should be noted that the bogie is a device that can rotate relative to the car body. It bears the entire weight of the car body and has good shock-absorbing characteristics to alleviate the interaction between the vehicle and the line, reduce impact and vibration, and at the same time ensure that the train passes through curves smoothly, improve the stability and safety of the vehicle, and transmit traction and braking force to enable the vehicle to start, accelerate and brake; the bogie frame is an important component of the bogie, which can bear the weight of all parts of the car body above the bogie, transfer the load to the rail surface through the axle box wheelset, and provide positioning and installation interfaces for various subsystems of the bogie, transmitting and attenuating vibrations between the wheelset and the car body.

[0043] This specific embodiment discloses a bogie frame, including two side beams 1, a first crossbeam 2 and a second crossbeam 3; the first crossbeam 2 and the second crossbeam 3 are both connected to one of the side beams 1 at one end and to the other side beam 1 at the other end; along the length direction of the side beam 1, the side beam 1 includes a middle section and end sections arranged at both ends of the middle section, the width of the end section is greater than the width of the middle section; and the middle section is a bent structure with an arc-shaped recessed portion; the first crossbeam 2 and the second crossbeam 3 are both hollow tubular structures.

[0044] It should be noted that in this specific embodiment, the two side beams 1 can also be set as a hollow structure. During actual use, it is necessary to ensure that the side beams 1 with a hollow structure can meet the structural strength requirements. When it is necessary to install structural parts on the side beams 1, corresponding installation bosses can be set on the side beams 1.

[0045] During use of the bogie frame provided by this embodiment, since the side beam 1 is configured with a lower center and higher ends, the arcuate recess formed in the middle section can be used to install other structural components, making the bogie frame more compact. Furthermore, the width of the end sections of the side beam 1 is greater than that of the middle section, facilitating the installation of the spring sleeve 6 in the end sections and improving the reliability of the installation of the spring sleeve 6. Furthermore, both the first cross beam 2 and the second cross beam 3 are configured as hollow tubular structures, which helps reduce the weight of the bogie frame and achieve lightweighting.

[0046] On the basis of the above embodiment, a brake caliper mounting seat 4 can be provided on the outer side of the side beam 1, and the brake caliper mounting seat 4 is provided with a first positioning bolt hole 410 and a second positioning bolt hole 420. The axial direction of the first positioning bolt hole 410 is perpendicular to the axial direction of the second positioning bolt hole 420, and the axis of the first positioning bolt hole 410 is arranged along the height direction of the side beam 1.

[0047] like Figure 3As shown, when the brake caliper is installed on the brake caliper mounting base 4, fixation is achieved by bolts installed in the first positioning bolt hole 410 and bolts installed in the second positioning bolt hole 420. Since the axial direction of the first positioning bolt hole 410 is perpendicular to the axial direction of the second positioning bolt hole 420, and the axis of the first positioning bolt hole 410 is set along the height direction of the side beam 1, during actual use, it is ensured that the side beam 1 is only subjected to bending moment but not torque under actual working conditions; when the brake caliper is subjected to longitudinal shear force, the bolts installed in the first positioning bolt hole 410 bear the longitudinal shear force, and the bolts installed in the second positioning bolt hole 420 bear the transverse shear force, which can effectively avoid the brake caliper mounting base 4 from bearing the shear force alone, thereby improving the reliability of the brake caliper mounting base 4 and extending the service life of the brake caliper mounting base 4.

[0048] Specifically, the brake caliper mounting seat 4 can be configured as follows Figure 3 The square structure shown in the figure can also be used to configure the brake caliper mounting seat 4 to have other structural forms that meet the requirements. The specific structure is determined according to the actual situation and will not be described in detail here.

[0049] It should be noted that the height direction of the side beam 1 mentioned in this application document is perpendicular to the length direction of the side beam 1 and also perpendicular to the length direction of the first crossbeam 2 or the second crossbeam 3, and the width direction of the side beam 1 is parallel to the length direction of the first crossbeam 2 or the second crossbeam 3.

[0050] The end sections at both ends of the middle section of the side beam 1 in this specific embodiment can be gradually inclined from one end connected to the middle section to the other end in a direction away from the bottom of the middle section, or the end sections can be horizontally arranged from one end connected to the middle section to the other end. The specific details are determined according to actual conditions and will not be elaborated here.

[0051] In addition, considering that other components need to be installed at the bottom of the middle section, the bottom surface of the middle section can be set to a plane, or the middle section can be set to a trapezoidal structure. The specific details will be determined based on actual conditions and will not be elaborated here.

[0052] In a specific embodiment, an arc-shaped extension piece may be provided at the bottom of the middle section of the side member 1 , and the bottom of the extension piece is connected to a lateral shock absorber mounting seat 5 , which is used to install a lateral shock absorber.

[0053] like Figure 2 As shown, each crossbeam is provided with two extensions, and a lateral shock absorber mounting seat 5 is provided at the bottom of each extension. The lateral shock absorber mounting seat 5 is provided in the middle position of the length direction of the side beam 1. During actual use, the lateral shock absorber mounting seat 5 is centrally arranged, which can make the side beam 1 evenly stressed, which is beneficial to improving the shock absorption effect.

[0054] In a specific embodiment, two spring sleeves 6 are provided at both ends of the side beam 1, and adjacent spring sleeves 6 are arranged at intervals; a groove for installing a spring is provided in the spring sleeve 6, the spring sleeve 6 is embedded in the inside of the side beam 1, and an outward folded edge is provided at the bottom of the spring sleeve 6.

[0055] The outward folding edge mentioned here mainly refers to the height direction of the spring sleeve 6 passing through the side beam 1. The bottom of the spring sleeve 6 extends out of the side beam 1, and the part of the spring sleeve 6 extending out of the side beam 1 forms an outward folding edge, which can effectively improve the installation reliability of the spring sleeve 6.

[0056] It should be noted that, compared to the prior art in which only one spring sleeve 6 is provided at the end of the side beam 1, two spring sleeves 6 are provided at both ends of the side beam 1 in this specific embodiment. The two spring sleeves 6 enable each axle box to be equipped with two primary steel springs. The arrangement of two spring sleeves 6 at each end enables each axle box to be equipped with two primary steel springs. Compared with the arrangement in which each axle box is equipped with one primary steel spring, this arrangement can effectively reduce the outer diameter of the primary steel spring, thereby reducing the width of the side beam 1. After the width of the side beam 1 is reduced, the space occupied by the bogie frame as a whole can be further reduced, which is conducive to the miniaturization of the bogie frame; at the same time, the axial contact area between the primary steel spring and the side beam 1 can be increased, reducing the contact stress and increasing the fatigue life of the primary steel spring and the axle box.

[0057] The spring sleeve 6 is embedded within the side sill 1. A hollow recess is located at the bottom of the spring sleeve 6 to accommodate the primary spring and prevent it from falling out. The bottom of the spring sleeve 6 at the bend also features an arc-shaped structure, matching the curved shape of the side sill 1. This arc-shaped structure maintains strength requirements without changing the overall profile of the side sill 1. It also allows for the installation of two primary springs per axle box.

[0058] The lower recess of the spring sleeve 6 is provided with an outward folding edge, which can strengthen the connection strength of the lower portion of the spring sleeve 6, meet the structural strength requirements, and reduce the stress level of the lower portion.

[0059] On the basis of the above embodiment, a wheelset lifting seat 7 can be set on the inner side of the side beam 1. The wheelset lifting seat 7 is used to fix the wheelset to the side beam 1. When the bogie is lifted as a whole, the wheelset lifting seat 7 fixes the wheelset and the bogie through ropes to achieve synchronous lifting of the wheelset and the frame.

[0060] Specifically, the wheelset lifting seat 7 can include an axle housing and a primary rubber spring. The axle housing includes a bearing housing and a bearing housing base integrally connected to its lower end. Two primary rubber springs are positioned between the bogie and the bearing housing base, one on each side of the bearing housing. Each primary rubber spring comprises a metal housing. Each metal housing has a protrusion on one side near the bearing housing. This protrusion is integrally cast with the metal housing, for example, directly formed on the metal housing through a casting process. The width of the protrusion is slightly smaller than the width of the vertical chute on either side of the bearing housing. This allows the protrusion to slide smoothly vertically within the chute while maintaining a certain horizontal clearance with the inner sidewalls of the chute to prevent unnecessary friction and jamming. However, in extreme cases, when significant horizontal loads occur between the bogie and the axle housing, the protrusion and the inner sidewalls of the chute provide a secure horizontal retaining connection, preventing significant horizontal displacement of the primary rubber spring and improving safety and reliability. A vertical chute is provided on each side of the bearing housing to accommodate the protrusion, providing space and guidance for its upward and downward movement. The lifting stop is located at the upper end of the vertical chute and is removably bolted to the chute. When the vehicle is assembled and operating normally, the protrusion and lifting stop are spaced apart, generating no force. The bogie and wheelset are then damped by the primary rubber springs. During bogie lifting and transport, however, the primary rubber springs stretch until the protrusion contacts the lifting stop. The force between the protrusion and the lifting stop lifts the wheelset, preventing excessive stretching of the primary rubber springs.

[0061] Of course, the wheelset lifting seat 7 can also be other structures that meet the requirements, which are determined according to actual conditions and will not be described in detail here.

[0062] like Figure 2 As shown, vertical damper mounting brackets 8 are provided at both ends of the side beam 1 in the longitudinal direction. These mounting brackets are used to mount vertical dampers. These mounting brackets 8 are welded to the lower cover plate, while the upper cover plate 11 has openings for mounting and dismounting the dampers. A tie rod bracket 9 is provided at the bottom of the side beam 1. Positioning cylinders 15 are located between adjacent spring sleeves 6. These positioning cylinders 15 cooperate with the tie rod brackets 9 to secure the axle box.

[0063] It should be noted that the mounting base of the vertical shock absorber mounting base 8 in this embodiment is generally made of high-strength metal materials, such as cast steel or forged steel, to ensure it can withstand the various forces and moments generated by the vertical shock absorber during vehicle operation. In terms of shape, the vertical shock absorber mounting base 8 is typically block-shaped or plate-shaped. Its size and shape are customized according to the design requirements of the bogie and the specifications of the vertical shock absorber. The vertical shock absorber mounting base 8 includes a connection portion for the bogie frame and a connection portion for the vertical shock absorber. The mounting base is secured to the bogie frame via bolts, welding, or other reliable connection methods. The connection between the mounting base and the bogie frame is typically reinforced to ensure a secure and reliable connection. Reinforcing ribs, bosses, and other structures may be provided to increase the strength and rigidity of the connection and prevent loosening or deformation during vehicle operation. The mounting base is provided with a dedicated area for mounting the vertical shock absorber, typically including a mounting hole, a slot, or other connection structure. The size and shape of the mounting hole match the connection end of the vertical shock absorber to ensure accurate installation and securement of the vertical shock absorber. Cushioning materials such as gaskets and rubber bushings may be provided to reduce vibration transmission between the vertical shock absorber and the mounting seat and to protect the mounting seat and the shock absorber from damage.

[0064] Additionally, to facilitate installation and maintenance, the design of the mount may consider accessibility and tool availability. For example, sufficient space should be provided for tightening and removing bolts using tools such as wrenches and sockets. The surface of the mount may also be treated with rust and corrosion protection to increase its service life and reliability. Common treatments include painting and galvanizing.

[0065] In addition, if Figure 2 As shown, a mounting seat 18 for accessories such as sand spreading and clearing obstacles and wheel rim lubrication can also be provided at the end of the side beam 1. The seat has four mounting holes and a mounting positioning groove. When installing accessories such as sand spreading and clearing obstacles and wheel rim lubrication, they can be embedded in the positioning groove to increase structural reliability.

[0066] It should be noted that the sand-spreading and obstacle-clearing accessory mentioned in this specific embodiment can be a mounting structure for a sand-spreading and obstacle-clearing device, primarily used to spread sand on the rails to increase friction between the rail wheels and the rails, shorten the distance between the rails, and increase friction during incline climbing. Specifically, an anti-loosening structure is provided on the mounting structure to prevent the mounting arm of the sand-spreading and obstacle-clearing device from falling off the side beam 1 of the bogie frame when subjected to external forces, thereby improving the fixing strength of the mounting arm of the sand-spreading and obstacle-clearing device.

[0067] Furthermore, the anti-loosening structure may include an anti-loosening plate having screw holes therein; the anti-loosening plate may be secured to the end of the mounting arm of the sand spreading and obstacle removal device via bolts passing through the screw holes. Of course, the anti-loosening structure may also have other structural forms that meet the requirements, which will be determined based on actual circumstances and will not be elaborated here.

[0068] The aforementioned accessories for improved wheel rim lubrication can be either dry or wet lubrication. Dry lubrication uses a solid wheel rim lubricating rod as the lubricant, typically applied to the wheel rim surface by a purely mechanical wheel rim lubricator. Wet lubrication uses oil or grease as the lubricant, sprayed onto the wheel rim surface by a complex system integrating mechanical, electrical, pneumatic, and intelligent control. Dry lubrication is gaining increasing popularity due to its simple and reliable structure, low failure rate and maintenance costs, and stable lubricant performance.

[0069] Specifically, the rim lubrication accessory can be set as a rim lubricator, so that the rim lubricator includes a guide tube, a lubricating rod installed in the guide tube, a constant force spring and an L-shaped push plate, the front and rear ends of the guide tube have openings, the lubricating rod extends from the front end opening, the bottom edge of the push plate extends into the guide tube and is fixed to the constant force spring, the side of the push plate closes the opening at the rear end of the guide tube and extends upward to the outside of the guide tube, the rear end of the lubricating rod contacts the constant force spring, and a pin is provided on the inner and outer sides of the side of the push plate, and the pin is fixedly connected to the guide tube.

[0070] In a specific embodiment, the first beam 2 is provided with a hollow chamber, which passes through both ends of the first beam 2 along the axial direction of the first beam 2; both ends of the axial direction of the first beam 2 are provided with torsion bar mounting seats 120, and the two ends of the anti-roll torsion bar in the length direction are respectively connected to the two torsion bar mounting seats 120, and the anti-roll torsion bar is located in the hollow chamber.

[0071] It should be noted that when a vehicle is traveling on a curve or subjected to lateral forces, the vehicle body is prone to rolling. Anti-roll torsion bars resist this rolling motion by twisting the torsion bar, thereby improving the vehicle's anti-roll performance. Anti-roll torsion bars can also reduce lateral acceleration when the vehicle is traveling on a curve, alleviating passengers' motion sickness. Furthermore, excessive lateral rolling motion can damage the vehicle's structure and equipment. Anti-roll torsion bars limit the vehicle's roll angle, thereby protecting the vehicle's structure and equipment. They can also reduce lateral wheel-rail forces when the vehicle is traveling on a curve, reducing wear on the rails and wheels.

[0072] In the existing solutions, the anti-roll torsion bar can be installed on the bogie frame, the torsion bar is connected to the support seat through a torsion arm, and the other end of the torsion arm is connected to the car body through a connecting rod; or the anti-roll torsion bar can be installed on the car body, the support seat of the anti-roll torsion bar is installed on the car body, the torsion bar is connected to the support seat through the torsion arm, and the other end of the torsion arm is connected to the bogie frame through a connecting rod; there is also a technical solution of installing the anti-roll torsion bar on the axle, the support seat of the anti-roll torsion bar is installed on the axle, the torsion bar is connected to the support seat through the torsion arm, and the other end of the torsion arm is connected to the car body or the bogie frame through a connecting rod; no matter which of the above installation methods is used, a certain amount of space needs to be reserved for the installation of the anti-roll torsion bar, and the installation of the anti-roll torsion bar requires a certain amount of additional space.

[0073] During use of the bogie frame provided in this specific embodiment, both ends of the anti-roll torsion bar are respectively connected to the torsion bar mounting seats 120 at the end of the first beam 2 , and the anti-roll torsion bar is completely located in the hollow cavity of the first beam 2 .

[0074] Compared to existing installation methods for anti-roll torsion bars, the bogie frame provided in this embodiment fully utilizes the space within the first crossbeam 2, positioning the anti-roll torsion bar within the hollow cavity of the first crossbeam 2. This eliminates the need for additional installation space and results in a more compact and rational bogie frame layout. Furthermore, the hollow structure of the first crossbeam 2 helps reduce the weight of the bogie frame, achieving a lightweight design. Furthermore, it ensures the proper function of the anti-roll torsion bar while protecting it from impacts caused by track rocks.

[0075] On the basis of the above embodiment, an integrated seat 10 can be provided at the end of the first crossbeam 2 extending axially out of the side beam 1. The integrated seat 10 includes a height valve mounting seat 110 and a torsion bar mounting seat 120. The height valve mounting seat 110 and the torsion bar mounting seat 120 are an integrated structure. Figure 4 As shown, the integrated seat 10 is provided with five mounting positions along the circumferential direction, one of which is used to mount the height valve, and the other four are used to mount the anti-roll torsion bars.

[0076] Specifically, the integrated seat 10 is a monolithic forging structure with four mounting holes and grooves for the anti-roll torsion bar, one mounting hole for the height valve, and a boss on the other side that is embedded in the tubular beam to ensure structural reliability.

[0077] Alternatively, the integrated seat 10 can include a seat body, a height valve mounting area, an anti-torsion bar mounting area, and a connecting structure. The seat body, the main structure of the integrated seat 10, is generally made of metal and possesses sufficient strength and rigidity to withstand the weight of the height valve and anti-roll torsion bar device, as well as the various forces generated during operation. The seat body is typically secured to the first crossbeam 2 by welding, bolting, or other means. The height valve mounting area on the integrated seat 10 has a dedicated location and fixing structure for mounting the height valve. These fixing structures may include bolt holes, slots, or other suitable connection methods to ensure that the height valve is securely mounted on the seat body and accurately senses changes in relative height between the vehicle body and bogie, thereby controlling the inflation or deflation of the air spring. The torsion bar mounting area on the integrated seat 10 also has a mounting location and fixing method for the anti-roll torsion bar and its associated components (such as the torsion bar, torsion arm, and support base). For example, a specifically shaped slot or bracket may be used to secure the torsion bar support base, allowing the anti-roll torsion bar to effectively resist vehicle roll. The torsion arm is connected to the support seat and other connecting components through hinges or other means to transmit the torsion force of the torsion bar. In order to connect the integrated seat 10 to the first crossbeam 2, other connecting structures such as connecting rods and pins are also provided. These connecting structures must ensure a firm and reliable connection between the integrated seat 10 and the bogie, while allowing relative movement within a certain range to adapt to various dynamic changes during vehicle operation.

[0078] Of course, the integrated seat 10 in this specific embodiment can also have other structural forms, which are determined according to actual conditions and will not be described in detail here.

[0079] In this specific embodiment, the height valve mounting seat 110 and the torsion bar mounting seat 120 are set as an integrated structure through the integrated seat 10, and the integrated seat 10 is installed on the periphery of both ends of the first crossbeam 2, which will not affect the installation of the anti-roll torsion bar. At the same time, it can also be used to install the height valve, making the structural layout of the bogie frame more reasonable and the structure more compact, which is conducive to the miniaturization of the bogie frame.

[0080] In a specific embodiment, the length of the second crossbeam 3 is smaller than that of the first crossbeam 2. The second crossbeam 3 is a tubular structure with both axial ends closed. The second crossbeam 3 is provided with a traction rod seat 16 for installing a traction rod, and the traction rod seat 16 is provided at the axial middle section of the second crossbeam 3, so that a traction mode of a single traction rod can be realized.

[0081] On the basis of the above embodiment, an upper cover plate 11 can be provided at the middle position in the length direction of the side beam 1, and one side of the upper cover plate 11 extends toward the outside of the side beam 1 along the length direction of the cross beam to form a first wing-shaped extension portion, and the first wing-shaped extension portion is provided with an anti-snaking shock absorber mounting seat 12; the other side of the upper cover plate 11 extends toward the inside of the side beam 1 along the length direction of the cross beam to form a longitudinal auxiliary beam 13.

[0082] The arrangement of the upper cover plate 11 in this specific embodiment realizes the diversification of the functions of the upper cover plate 11 , making the structure of the upper cover plate 11 compact and the functions concentrated.

[0083] like Figure 1 As shown, the anti-snaking damper mounting base 12 is a thin-walled, large-section structure. Its upper portion forms one side of a wing-like structure, its lateral surfaces are formed by two symmetrically arranged curved steel plates, its bottom portion is a curved steel plate, and its outer surface is a rectangular steel plate with four locating seats. These locating seats are provided with threaded holes and locating slots for mounting the anti-snaking damper.

[0084] Specifically, the anti-snaking shock absorber mounting base 12 can include a horizontal body connecting plate, a vertical body connecting plate, and an anti-snaking shock absorber mounting block. The horizontal body connecting plate is riveted to the bottom surface of the bogie side beam 1, and its back surface is designed as a large horizontal body connecting surface for close contact with the body chassis side beam. The horizontal body connecting plate is typically arranged with several groups of rivet holes, which are used to achieve a secure connection with the body chassis side beam. The vertical body connecting plate is riveted to the inner surface of the chassis side beam, and its back surface is designed as a large vertical body connecting surface, which is also connected to the chassis side beam via rivets. The vertical body connecting plate not only serves as a connection but also increases the overall stability of the mounting base. Multiple reinforcing ribs connected to the horizontal body connecting plate are arranged at both ends of the vertical body connecting plate on the side facing away from the chassis side beam, and between the multiple rows of rivet holes, further enhancing the strength of the entire structure. The anti-snaking shock absorber mounting block is arranged on the bottom surface of the horizontal body connecting plate or on the bogie frame side beam 1. The anti-snaking damper mounting blocks consist of a large, centrally located anti-snaking damper mounting block and four smaller, flanking anti-snaking damper mounting blocks. The large anti-snaking damper mounting block features a central cylindrical pinhole for mounting the vehicle connection end of the anti-snaking damper. Surrounding this pinhole are several bolt holes for securing the anti-snaking damper. The smaller anti-snaking damper mounting blocks also feature a bolt hole as needed to assist with securing and positioning. Between each mounting block, two cross-shaped grooves are hollowed out in areas with low stress, reducing overall weight without compromising the overall strength and functionality of the mounting base.

[0085] To further reduce weight, square weight-reducing holes are provided on the back of the large mounting block for the anti-snaking shock absorber. Optimized arc transitions are also used at each corner of the mounting base, with large arc transitions in high-stress areas to avoid stress concentration. This enhances the overall structure's load-bearing capacity while reducing overall mass, ultimately effectively utilizing materials and achieving an optimized design.

[0086] During the actual configuration, the first side of the longitudinal auxiliary beam 13 can be connected to the first crossbeam 2, the second side of the longitudinal auxiliary beam 13 can be connected to the second crossbeam 3, and the third side of the longitudinal auxiliary beam 13 can be connected to the side beam 1. The first side and the second side of the longitudinal auxiliary beam 13 are arranged to be separated from each other. The longitudinal auxiliary beam 13 connects the first crossbeam 2 and the second crossbeam 3 together, and the force acting on the traction rod is transmitted from the first crossbeam 2 to the second crossbeam 3 through the longitudinal auxiliary beam 13, so that the first crossbeam 2 and the second crossbeam 3 evenly share the traction force and braking force. At the same time, the outer side of the longitudinal auxiliary beam 13 is combined with the side beam 1, strengthening the connection between the side beam 1 and the first and second crossbeams 2 and 3, sharing the stress at the connection between the first and second crossbeams 2 and 3 and the side beam 1, making the bogie frame more reliable.

[0087] The longitudinal auxiliary beam 13 also supports the inner portion of the wing-shaped structure in the middle of the side member 1. The outer portion of the wing-shaped structure is supported by the anti-snaking damper mounting bracket. The longitudinal auxiliary beam 13 and the anti-snaking damper mounting bracket 12 jointly support the wing-shaped structure. The center of the wing-shaped structure is a circular air spring support bracket 14. This ring-shaped air spring support bracket 14 is removably mounted on the upper cover plate 11. The central axis of the air spring support bracket 14 is located at the intersection of the middle section of the longitudinal direction of the side member 1 and the middle section of the width direction of the side member 1. This air spring support bracket 14 provides sufficient vertical support to meet the installation requirements of the air spring and can withstand the vertical forces applied to the frame by the vehicle body through the air spring.

[0088] In one embodiment, the longitudinal auxiliary beam 13 is a hollowed-out steel plate structure comprising a base extending along the plane of the upper cover plate 11 and a mounting platform 1310 secured to the base. The mounting platform 1310 is positioned perpendicular to the base. The edge of the mounting platform 1310 is provided with a bent portion 1320 for connection to a lifting device. The end of the bent portion 1320 is provided with a protrusion for preventing disengagement.

[0089] The first beam 2 is provided with a vertical stop mounting seat 17 , which is provided on a side of the first beam 2 facing the second beam 3 , and the vertical stop mounting seat 17 and the two mounting platforms 1310 form a three-point support structure.

[0090] like Figure 1 、 Figure 2As shown, the longitudinal auxiliary beam 13 is a hollow steel plate combined welded structure. The longitudinal auxiliary beam 13 is provided with a bending portion 1320 with an integral lifting function. The end of the bending portion 1320 is provided with a mounting platform 1310. The two mounting platforms 1310 together with the vertical stop mounting seat 17 form a stable three-point support structure, which can realize the smooth lifting of the bogie.

[0091] In a specific embodiment, the first beam 2 is provided with two motor mounting seats 20 and a first gearbox hanger 21, and the second beam 3 is provided with a motor mounting seat 19 and a second gearbox hanger 22. Figure 2 As shown, the axial dimension of the first motor mounting seat 19 in the second crossbeam 3 is slightly larger than the axial dimension of the second motor mounting seat 20 in the first crossbeam 2. In order to realize the installation of the first motor mounting seat 19 and the traction rod seat 16, a recess is provided in the first motor mounting seat 19 during the actual installation. Figure 2 It is shown installed in a recess of a motor mounting seat 19 , and the traction rod seat 16 is connected to the second crossbeam 3 .

[0092] Furthermore, a first mounting hole 210 and a second mounting hole 220 can be provided on both the first gearbox hanger 21 and the second gearbox hanger 22. The axial direction of the first mounting hole 210 is set along the height direction of the first beam 2, and the axial direction of the second mounting hole 220 is perpendicular to the axial direction of the first mounting hole 210. The first gearbox hanger 21 and the second gearbox hanger 22 are both thin in the middle and wide at both ends. The first gearbox hanger 21 and the second gearbox hanger 22 are both provided with limiting holes, which are used to cooperate with the gearbox to limit the installation position of the gearbox.

[0093] During the installation of the gearbox, the gearbox needs to be connected to the first gearbox hanger 21 and the second gearbox hanger 22 through the first connecting piece connected to the first mounting hole 210 and the second connecting piece connected to the second mounting hole 220. During actual use, since the axial direction of the second mounting hole 220 is perpendicular to the axial direction of the first mounting hole 210, and the axial direction of the first mounting hole 210 is set along the height direction of the first crossbeam 2, during the shaking of the gearbox, the first connecting piece in the first mounting hole 210 and the second connecting piece in the second mounting hole 220 can withstand the vertical shear force and the horizontal shear force, thereby avoiding the first gearbox hanger 21 and the second gearbox hanger 22 from supporting the shear force, which can effectively extend the service life of the first gearbox hanger 21 and the second gearbox hanger 22.

[0094] In addition, since the first gearbox hanger 21 and the second gearbox hanger 22 are both thin in the middle and wide at both ends, the mass of the first gearbox hanger 21 and the second gearbox hanger 22 can be effectively reduced while meeting the strength requirements of the structure; in addition, the first gearbox hanger 21 and the second gearbox hanger 22 are both provided with limiting holes, which can effectively limit the gearbox during the installation process.

[0095] In addition to the above-mentioned bogie frame, the present invention also provides a bogie including the above-mentioned bogie frame. For the structures of other parts of the bogie, please refer to the prior art and will not be described in detail herein.

[0096] In a specific embodiment, the bogie includes the above-mentioned bogie frame, a brake caliper, a lateral shock absorber, a height valve, an anti-snaking shock absorber, a traction rod, a vertical stop, a first-position motor, a second-position motor, and a gearbox, wherein the brake caliper is mounted on the brake caliper mounting seat 4 of the bogie frame, the lateral shock absorber is mounted on the lateral shock absorber mounting seat 5 of the bogie frame; the height valve is mounted on the integrated seat 10 of the bogie frame; the anti-snaking shock absorber is mounted on the anti-snaking shock absorber mounting seat 12 of the bogie frame; the traction rod is mounted on the traction rod seat 16 of the bogie frame; the vertical stop is mounted on the vertical stop mounting seat 17 of the bogie frame; the first-position motor is mounted on the first-position motor mounting seat 19 of the bogie frame; the second-position motor is mounted on the second-position motor mounting seat 20 of the bogie frame; and the gearbox is mounted on the first gearbox hanger 21 and the second gearbox hanger 22 of the bogie frame. Of course, depending on actual conditions, other different connection interfaces can also be provided on the bogie frame, which will be determined according to actual conditions and will not be described in detail here.

[0097] In addition to the above-mentioned bogie frame, the present invention also provides a motor vehicle including the bogie frame disclosed in the above-mentioned embodiment. For the structures of other parts of the motor vehicle, please refer to the prior art and will not be described in detail herein.

[0098] The "first" and "second" in the first crossbeam 2 and the second crossbeam 3, the first positioning bolt hole 410 and the second positioning bolt hole 420, and the first mounting hole 210 and the second mounting hole 220 mentioned in this application document are only for distinguishing the different positions and there is no order of precedence.

[0099] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. Any combination of all the embodiments provided by the present invention is within the scope of protection of this invention and will not be described in detail here.

[0100] The bogie frame, bogie and EMU vehicle provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in several ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A bogie frame, characterized in that: It comprises two side beams (1), a first cross beam (2) and a second cross beam (3); the first cross beam (2) and the second cross beam (3) are each connected to one of the side beams (1) at one end and to the other side beam (1) at the other end; Along the length direction of the side beam (1), the side beam (1) comprises a middle section and end sections arranged at both ends of the middle section, the width of the end sections being greater than the width of the middle section; and the middle section is a bent structure having an arc-shaped concave portion; The first crossbeam (2) and the second crossbeam (3) are both hollow tubular structures; The upper cover plate (11) of the side beam (1) is formed with a longitudinal auxiliary beam (13), a first side of the longitudinal auxiliary beam (13) is connected to the first cross beam (2), a second side of the longitudinal auxiliary beam (13) is connected to the second cross beam (3), and a third side of the longitudinal auxiliary beam (13) is connected to the side beam (1); A bending portion (1320) is provided at the edge of the mounting platform (1310) of the longitudinal auxiliary beam (13).

2. The bogie frame according to claim 1, characterized in that: A brake caliper mounting seat (4) is provided on the outer side of the side beam (1), and the brake caliper mounting seat (4) is provided with a first positioning bolt hole (410) and a second positioning bolt hole (420), wherein the axial direction of the first positioning bolt hole (410) is perpendicular to the axial direction of the second positioning bolt hole (420), and the axis of the first positioning bolt hole (410) is provided along the height direction of the side beam (1).

3. The bogie frame according to claim 1, characterized in that: An arc-shaped extension piece is provided at the bottom of the middle section of the side beam (1), and a lateral shock absorber mounting seat (5) is connected to the bottom of the extension piece. The lateral shock absorber mounting seat (5) is used to mount a lateral shock absorber.

4. The bogie frame according to claim 1, characterized in that: Two spring sleeves (6) are provided at both ends of the side beam (1), and adjacent spring sleeves (6) are spaced apart. A groove for installing a spring is provided in the spring sleeve (6), the spring sleeve (6) is embedded in the side beam (1), and an outward-turned folded edge is provided at the bottom of the spring sleeve (6).

5. The bogie frame according to claim 4, characterized in that: A wheelset lifting seat (7) is provided on the inner side of the side beam (1), and the wheelset lifting seat (7) is used to fix the wheelset to the side beam (1); Vertical vibration damper mounting seats (8) are provided at both ends of the side beam (1) in the longitudinal direction, and the vertical vibration damper mounting seats (8) are used to mount the vertical vibration damper; A pull rod seat (9) is provided at the bottom of the side beam (1), and a positioning cylinder (15) is provided between adjacent spring sleeves (6). The positioning cylinder (15) cooperates with the pull rod seat (9) to fix the axle box body.

6. The bogie frame according to any one of claims 1 to 5, characterized in that: The first crossbeam (2) is provided with a hollow chamber, and the hollow chamber passes through both ends of the first crossbeam (2) along the axial direction of the first crossbeam (2); both axial ends of the first crossbeam (2) are provided with torsion bar mounting seats (120), and both ends of the anti-roll torsion bar in the longitudinal direction are respectively connected to the two torsion bar mounting seats (120), and the anti-roll torsion bar is located in the hollow chamber.

7. The bogie frame according to claim 6, characterized in that: The first crossbeam (2) is provided with a two-position motor mounting seat (20), a first gearbox hanging seat (21) and a vertical stop mounting seat (17); the second crossbeam (3) is provided with a one-position motor mounting seat (19), a second gearbox hanging seat (22) and a traction rod seat (16); the vertical stop mounting seat (17) is provided on a side of the first crossbeam (2) facing the second crossbeam (3); The traction rod seat (16) is arranged at the middle section of the axial direction of the second cross beam (3).

8. The bogie frame according to claim 7, characterized in that: The first gearbox hanger (21) and the second gearbox hanger (22) are both provided with a first mounting hole (210) and a second mounting hole (220); the axial direction of the first mounting hole (210) is arranged along the height direction of the first crossbeam (2); the axial direction of the second mounting hole (220) is perpendicular to the axial direction of the first mounting hole (210); the first gearbox hanger (21) and the second gearbox hanger (22) are both thin in the middle and wide at both ends; the first gearbox hanger (21) and the second gearbox hanger (22) are both provided with a limiting hole; the limiting hole is used to cooperate with the gearbox to limit the installation position of the gearbox.

9. The bogie frame according to claim 7, characterized in that: An integrated seat (10) is provided at an axial end of the first crossbeam (2), the integrated seat (10) comprising a height valve mounting seat (110) and the torsion bar mounting seat (120), the height valve mounting seat (110) and the torsion bar mounting seat (120) being an integrated structure; The integrated seat (10) is provided with five installation positions along the circumferential direction, one of the installation positions is used for installing the height valve, and the other four installation positions are used for installing the anti-roll torsion bars.

10. The bogie frame according to any one of claims 1 to 5, characterized in that: An upper cover plate (11) is provided at a middle position in the longitudinal direction of the side beam (1), one side of the upper cover plate (11) extends toward the outer side of the side beam (1) along the longitudinal direction of the cross beam to form a first wing-shaped extension portion, and the first wing-shaped extension portion is provided with an anti-snaking shock absorber mounting seat (12); The other side of the upper cover plate (11) extends along the length direction of the cross beam toward the inner side of the side beam (1) to form a longitudinal auxiliary beam (13); The first side and the second side of the longitudinal auxiliary beam (13) are arranged away from each other.

11. A bogie, characterized in that: Comprising the bogie frame according to any one of claims 1-10.

12. A motor vehicle, characterized in that: Comprising the bogie frame according to any one of claims 1-10.

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