Bogie frame, bogie and trailer vehicle

Abstract

The invention discloses a bogie frame, a bogie and a trailer vehicle, and relates to the technical field of bogies. The bogie frame comprises two side beams, a first cross beam, a second cross beam and an anti-side-rolling torsion bar. One ends of the first cross beam and the second cross beam are connected with one side beam, and the other ends are connected with the other side beam; the first cross beam is provided with a hollow cavity, and the hollow cavity penetrates through the two ends of the first cross beam in the axial direction of the first cross beam; the two axial ends of the first cross beam are each provided with a torsion bar installation base, the two length-direction ends of the anti-rolling torsion bar are connected to the two torsion bar installation bases respectively, and the anti-rolling torsion bar is located in the hollow cavity. According to the bogie frame, the internal space of the first cross beam is fully utilized, extra installation space does not need to be occupied, and the structural layout of the bogie frame is more compact and reasonable. Normal functions of the anti-side-rolling torsion bar can be guaranteed, and the anti-side-rolling torsion bar can be protected from being hit by stone of a circuit.

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 comprising the bogie frame and a trailer vehicle comprising the bogie frame. Background Art

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

[0003] At present, an anti-rolling and torsion bar needs to be installed in the bogie. The current anti-rolling and torsion bar is generally installed on the outside of the bogie through a mounting seat, which takes up a certain installation space, causing the overall size of the bogie to be further increased.

[0004] In summary, how to provide a bogie frame with a compact structure is a problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a bogie frame, which can avoid the anti-rolling and torsion bar from occupying additional installation space by installing the anti-rolling and torsion bar in the hollow cavity of the first crossbeam, thereby making the structural layout of the bogie frame more compact and reasonable.

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

[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, a second cross beam and an anti-roll torsion bar;

[0009] The first cross beam and the second cross beam are each connected to one of the side beams at one end and connected to the other side beam at the other end;

[0010] The first crossbeam is provided with a hollow chamber, and the hollow chamber passes through two ends of the first crossbeam along the axial direction of the first crossbeam; torsion bar mounting seats are provided at both ends of the axial direction of the first crossbeam, 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.

[0011] Optionally, an integrated seat is provided at the axial end of the first crossbeam, the integrated seat comprises a height valve mounting seat and the torsion bar mounting seat, and the height valve mounting seat and the torsion bar mounting seat are an integrated structure;

[0012] 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.

[0013] Optionally, the length of the second crossbeam is smaller than that of the first crossbeam, the second crossbeam is a tubular structure with both axial ends closed, the second crossbeam is provided with a traction rod seat for mounting a traction rod, and the traction rod seat is arranged at the axial middle section of the second crossbeam.

[0014] Optionally, an upper cover plate is provided at the middle position in the length direction of the side beam, one side of the upper cover plate extends toward the outer side of the side beam 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;

[0015] The other side of the upper cover plate extends toward the inner side of the side beam along the length direction of the cross beam to form a longitudinal auxiliary beam.

[0016] Optionally, 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 away from each other.

[0017] Optionally, the longitudinal auxiliary beam is a hollow steel plate structure, the steel plate structure is provided with a base portion extending along the plane where the upper cover plate is located and a mounting platform fixed to the base portion, and the mounting platform is arranged perpendicular to the base portion.

[0018] Optionally, a bending portion is provided at the edge of the mounting platform, the bending portion is used to be connected to a lifting device, and an anti-slip protrusion is provided at the end of the bending portion.

[0019] Optionally, the first crossbeam is provided with a vertical stop mounting seat, the vertical stop mounting seat is arranged on a side of the first crossbeam facing the second crossbeam, and the vertical stop mounting seat and the two mounting platforms form a three-point support structure.

[0020] Optionally, the upper cover plate is provided with an air spring support seat, the air spring support seat is an annular structure, and the air spring support seat is detachably provided on the upper cover plate;

[0021] The central axis of the air spring support seat is located at an intersection of a middle section of the side beam in a length direction and a middle section of the side beam in a width direction.

[0022] Optionally, 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 sections is greater than the width of the middle section; and the middle section is a bending structure with an arc-shaped recessed portion.

[0023] Optionally, two spring sleeves are provided at both ends of the side beam, and adjacent spring sleeves are spaced apart;

[0024] A groove for installing a spring is arranged in the spring sleeve, the spring sleeve is embedded in the side beam, and an outward-turned folded edge is arranged at the bottom of the spring sleeve.

[0025] A bogie comprises the bogie frame described in any one of the above items.

[0026] A trailer vehicle comprises the bogie frame described in any one of the above items.

[0027] During use of the bogie frame provided by the present invention, both ends of the anti-roll torsion bar are respectively connected to the torsion bar mounting seats at the end of the first crossbeam, and the anti-roll torsion bar is completely located in the hollow cavity of the first crossbeam.

[0028] Compared with the installation method of the anti-rolling torsion bar in the prior art, the bogie frame provided by the present invention makes full use of the space inside the first crossbeam, so that the anti-rolling torsion bar is located in the hollow chamber of the first crossbeam, and no additional installation space is required, making the structural layout of the bogie frame more compact and reasonable. In addition, setting the first crossbeam as a hollow structure is conducive to reducing the mass of the bogie frame and achieving lightweight bogie frame.

[0029] In addition, the present invention also provides a bogie including the above-mentioned bogie frame and a trailer vehicle including the above-mentioned bogie frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0031] Figure 1 A schematic structural diagram of a specific embodiment of the bogie frame provided by the present invention;

[0032] Figure 2 A schematic structural diagram of the bogie frame provided by the present invention from another angle;

[0033] Figure 3 It is a schematic diagram of the structure of the brake caliper mounting seat;

[0034] Figure 4 It is a structural diagram of the integrated seat.

[0035] Figure 1-Figure 4 middle:

[0036] 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, 9-tie 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 tie rod seat, 17-vertical stop mounting seat, 18-accessory mounting seat. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0038] The core of the present invention is to provide a bogie frame. By installing the anti-rolling and torsion bar in the hollow cavity of the first crossbeam, the anti-rolling and torsion bar can be prevented from occupying additional installation space, making the structural layout of the bogie frame more compact and reasonable.

[0039] Another core of the present invention is to provide a bogie including the above-mentioned bogie frame and a trailer vehicle including the above-mentioned bogie frame.

[0040] 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 mitigate 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 the vibration between the wheelset and the car body.

[0041] This specific embodiment discloses a bogie frame, comprising two side beams 1, a first cross beam 2, a second cross beam 3 and an anti-roll torsion bar; 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 connected to the other side beam 1 at the other end; the first cross beam 2 is provided with a hollow chamber, and the hollow chamber passes through both ends of the first cross beam 2 along the axial direction of the first cross beam 2; both axial ends of the first cross beam 2 are provided with torsion bar mounting seats 120, and both 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.

[0042] It should be noted that when a vehicle is traveling on a curve or subjected to lateral force, the vehicle body is prone to roll. The anti-roll torsion bar resists the rolling motion of the vehicle body by twisting the torsion bar, thereby improving the vehicle's anti-roll performance; the anti-roll torsion bar can also reduce the lateral acceleration of the vehicle when traveling on a curve, reducing the passengers' motion sickness; in addition, excessive rolling motion of the vehicle body may cause damage to the vehicle's structure and equipment. The anti-roll torsion bar can limit the rolling angle of the vehicle body, thereby protecting the vehicle's structure and equipment; the anti-roll torsion bar can also reduce the lateral force of the wheel-rail when the vehicle is traveling on a curve, reducing the wear of the track and wheels.

[0043] 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 the torsion arm, and the other end of the torsion arm is connected to the car body through the 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 the 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 the connecting rod; no matter which of the above installation methods is used, a certain 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.

[0044] When using 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 ends of the first crossbeam 2 , and the anti-roll torsion bar is completely located in the hollow cavity of the first crossbeam 2 .

[0045] Compared with the installation method of the anti-roll torsion bar in the prior art, the bogie frame provided in this specific embodiment makes full use of the space inside the first crossbeam 2, so that the anti-roll torsion bar is located in the hollow chamber of the first crossbeam 2, and no additional installation space is required, making the structural layout of the bogie frame more compact and reasonable. In addition, setting the first crossbeam 2 as a hollow structure is conducive to reducing the mass of the bogie frame and achieving lightweight bogie frame; in addition, it can also ensure the normal function of the anti-roll torsion bar while protecting the anti-roll torsion bar from being hit by track stones.

[0046] On the basis of the above embodiment, an integrated seat 10 may be provided at the end of the first cross beam 2 extending axially out of the side beam 1, the integrated seat 10 comprising 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 being an integrated structure; Figure 4 As shown, the integrated seat 10 is provided with five mounting positions along the circumferential direction, one mounting position is used for mounting the height valve, and the other four mounting positions are used for mounting the anti-roll torsion bars.

[0047] Specifically, the integrated seat 10 is an integral forging structure, which is provided with 4 mounting holes and grooves required for mounting the anti-roll torsion bar, and a mounting hole for mounting the height valve. A boss is provided on the other side, and the boss is embedded in the pipe beam to ensure the reliability of the structure.

[0048] On the other hand, the integrated seat 10 can include a seat body, a height valve installation position, an anti-torsion bar installation position and a connection structure, wherein the seat body is the main structure of the integrated seat 10, which is generally made of metal material and has sufficient strength and rigidity to bear the weight of the height valve and the anti-roll torsion bar device and various forces generated during operation. The seat body is usually fixed to the first crossbeam 2 by welding, bolt connection, etc. The height valve installation position is provided with a special position and fixed structure on the integrated seat 10 to install the height valve; these fixed structures may include bolt holes, card slots or other suitable connection methods to ensure that the height valve can be firmly installed on the seat body and can accurately sense the relative height change between the car body and the bogie, so as to achieve the control of the inflation or deflation of the air spring; the torsion bar installation position also has an installation position and fixing method for the anti-roll torsion bar and its related components (such as torsion bar, torsion arm, support seat, etc.) on the integrated seat 10. For example, the support seat of the torsion bar is fixed by a card slot or bracket of a specific shape, so that the anti-roll torsion bar can effectively play a role in resisting the rolling of the car body. The torsion arm is connected to the support seat and other connecting parts by means of hinges, etc., to transmit the torsion force of the torsion bar; in order to connect the integrated seat 10 with the first crossbeam 2, some connecting structures such as connecting rods and pins are also provided. These connecting structures must ensure that the connection between the integrated seat 10 and the bogie is firm and reliable, and allow relative movement within a certain range to adapt to various dynamic changes during the operation of the vehicle.

[0049] Of course, the integrated seat 10 in this specific embodiment can also be other structural forms, which are determined according to actual conditions and will not be elaborated here.

[0050] 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 outer periphery of the two 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.

[0051] In a specific embodiment, the length of the second cross beam 3 is smaller than that of the first cross beam 2, and the second cross beam 3 is a tubular structure with both axial ends closed. The second cross beam 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 cross beam 3, so that a traction mode of a single traction rod can be realized.

[0052] On the basis of the above embodiment, an upper cover plate 11 can be set 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.

[0053] 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.

[0054] like Figure 1 As shown, the anti-snaking shock absorber mounting seat 12 is a thin-walled large-section structure as a whole, with the upper part being one side of a wing-shaped structure, the side being two symmetrically arranged arc-shaped steel plates, the bottom being an arc-shaped steel plate, and the outer side being a rectangular steel plate, on which four positioning seats are arranged. The positioning seats are provided with threaded holes and positioning grooves for mounting the anti-snaking shock absorber.

[0055] Specifically, the anti-snaking shock absorber mounting seat 12 can include a horizontal car body connecting plate, a vertical car body connecting plate and an anti-snaking shock absorber mounting block, wherein the horizontal car body connecting plate is riveted and fixed to the bottom surface of the bogie side beam 1, and its back is designed as a large horizontal car body connecting surface for tightly fitting with the car body chassis side beam. The horizontal car body connecting plate is usually arranged with a plurality of groups of rivet holes, and a firm connection with the car body chassis side beam is achieved by rivets. The vertical car body connecting plate is riveted and fixed to the inner side surface of the chassis side beam, and the back is designed as a large vertical car body connecting surface, which is also connected to the chassis side beam by rivets. The vertical car body connecting plate not only plays a connecting role, but also increases the overall stability of the mounting seat. A plurality of reinforcing ribs connected to the horizontal car body connecting plate are arranged at both ends of the vertical car body connecting plate on the side facing away from the chassis side beam, and between multiple rows of rivet holes, so as to further improve the strength of the entire structure. The anti-snaking shock absorber mounting block is arranged on the bottom surface of the horizontal car body connecting plate or on the side beam 1 of the bogie frame. The anti-snake shock absorber mounting block includes a large anti-snake shock absorber mounting block located in the center and four small anti-snake shock absorber mounting blocks located on both sides thereof. A cylindrical pin hole for mounting the vehicle connection end of the anti-snake shock absorber is arranged in the center of the large anti-snake shock absorber mounting block, and several bolt holes are arranged around the cylindrical pin hole for mounting and fixing the anti-snake shock absorber. A bolt hole is also arranged on the small anti-snake shock absorber mounting block as needed to assist in fixing and positioning. Between each mounting block, the material is hollowed out for the parts with less force to form two "cross" shaped grooves, which can reduce the weight of the overall structure without affecting the overall strength and function of the mounting seat.

[0056] In addition, in order to further reduce weight, a square weight-reducing hole can be opened on the back of the large mounting block of the anti-snake shock absorber. At the same time, optimized arc transitions are used at each corner of the mounting seat, and large arc transitions are used in high-stress areas to avoid stress concentration, so that the entire structure can reduce the overall mass while enhancing the bearing capacity, and finally fully and effectively utilize the material to achieve the optimal design.

[0057] In the actual setting process, the first side of the longitudinal auxiliary beam 13 can be connected to the first cross beam 2, the second side of the longitudinal auxiliary beam 13 can be connected to the second cross beam 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 set apart; the longitudinal auxiliary beam 13 connects the first cross beam 2 and the second cross beam 3 together, and the force at the traction rod is transmitted from the first cross beam 2 to the second cross beam 3 through the longitudinal auxiliary beam 13, so that the first cross beam 2 and the second cross beam 3 evenly share the traction force and the braking force. At the same time, the outer side of the longitudinal auxiliary beam 13 is combined with the side beam 1 to strengthen the connection between the side beam 1 and the first cross beam 2 and the second cross beam 3, share the stress at the connection between the first cross beam 2, the second cross beam 3 and the side beam 1, and make the bogie frame more reliable.

[0058] The longitudinal auxiliary beam 13 also plays the role of supporting the inner part of the wing-shaped structure in the middle of the side beam 1, and the outer part of the wing-shaped structure is supported by the anti-snaking shock absorber mounting seat. The longitudinal auxiliary beam 13 and the anti-snaking shock absorber mounting seat 12 jointly support the wing-shaped structure, and the middle part of the wing-shaped structure is a circular air spring support seat 14, which is a ring-shaped structure and is detachably arranged on the upper cover plate 11; the central axis of the air spring support seat 14 is located at the intersection of the middle section of the length direction of the side beam 1 and the middle section of the width direction of the side beam 1. The air spring support seat 14 can provide sufficient vertical support to meet the installation requirements of the air spring, and can withstand the vertical force applied to the frame by the vehicle body through the air spring.

[0059] In a specific embodiment, the longitudinal auxiliary beam 13 is a hollow steel plate structure, which is provided with a base extending along the plane where the upper cover plate 11 is located and a mounting platform 1310 fixed to the base, and the mounting platform 1310 is arranged perpendicular to the base. A bending portion 1320 is arranged at the edge of the mounting platform 1310, and the bending portion 1320 is used to connect with the lifting equipment, and an anti-slip convex portion is arranged at the end of the bending portion 1320.

[0060] The first cross beam 2 is provided with a vertical stop mounting seat 17 , which is disposed on a side of the first cross beam 2 facing the second cross beam 3 , and the vertical stop mounting seat 17 and the two mounting platforms 1310 form a three-point support structure.

[0061] like Figure 1 , Figure 2 As shown, the longitudinal auxiliary beam 13 is a hollow steel plate combined welding 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.

[0062] The present specific embodiment discloses a bogie frame, comprising 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 both connected to one of the side beams 1 at one end, and connected 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 section is greater than the width of the middle section; and the middle section is a bending structure with an arc-shaped recessed portion; the first cross beam 2 and the second cross beam 3 are both hollow tubular structures.

[0063] It should be noted that, in this specific embodiment, the two side beams 1 can also be set as a hollow structure. In 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 a structural part on the side beams 1, a corresponding installation boss can be set on the side beams 1.

[0064] In the process of using the bogie frame provided by this specific embodiment, since the side beam 1 is set as a structure with a low middle and high ends, the position of the arc-shaped recess formed in the middle section can be used to install other structural parts, making the structural layout of the bogie frame more compact; in addition, the width of the end section of the side beam 1 is greater than the width of the middle section, which facilitates the installation of the spring sleeve 6 in the end section and improves the reliability of the installation of the spring sleeve 6. In addition, the first cross beam 2 and the second cross beam 3 are both set as hollow tubular structures, which is conducive to reducing the mass of the bogie frame and achieving lightweight bogie frame.

[0065] 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.

[0066] like Figure 3 As shown, when the brake caliper is installed on the brake caliper mounting seat 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 arranged 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 prevent the brake caliper mounting seat 4 from being subjected to the shear force alone, thereby improving the reliability of the brake caliper mounting seat 4 and extending the service life of the brake caliper mounting seat 4.

[0067] 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 set the brake caliper mounting seat 4 to 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.

[0068] It should be noted that the height direction of the side beam 1 mentioned in the present application document is perpendicular to the length direction of the side beam 1 and also perpendicular to the length direction of the first cross beam 2 or the second cross beam 3 , and the width direction of the side beam 1 is parallel to the length direction of the first cross beam 2 or the second cross beam 3 .

[0069] 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.

[0070] 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, which is determined according to actual conditions and will not be elaborated here.

[0071] In a specific embodiment, an arc-shaped extension piece may be 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 install the lateral shock absorber.

[0072] like Figure 2 As shown, each cross beam is provided with two extension pieces, and a lateral shock absorber mounting seat 5 is provided at the bottom of each extension piece. The lateral shock absorber mounting seat 5 is arranged in the middle position in the length direction of the side beam 1. In actual use, the lateral shock absorber mounting seat 5 is centrally arranged, which can make the side beam 1 evenly stressed and is beneficial to improving the shock absorption effect.

[0073] In a specific embodiment, 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 folded edge is provided at the bottom of the spring sleeve 6.

[0074] The outward-turned folded edge mentioned here mainly refers to the height direction of the spring sleeve 6 penetrating 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-turned folded edge, which can effectively improve the installation reliability of the spring sleeve 6.

[0075] It should be noted that, compared with 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, and 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, the contact stress can be reduced, and the fatigue life of the primary steel spring and the axle box can be increased.

[0076] The spring sleeve 6 is embedded in the side beam 1, and a hollow groove structure is provided at the bottom of the spring sleeve 6 for installing a series of steel springs and preventing the springs from falling off. The bottom of the spring sleeve 6 at the bend also has an arc structure, which matches the arc shape of the side beam 1 at the bend. The setting of the arc structure does not need to change the overall profile of the side beam 1, but can meet the strength requirements, and can also realize the arrangement form of installing two series of steel springs in each axle box.

[0077] The lower groove of the spring sleeve 6 is provided with an outward folding edge, which can strengthen the connection strength of the lower part of the spring sleeve 6, meet the structural strength requirements, and reduce the stress level of the lower part.

[0078] 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.

[0079] Specifically, the wheelset lifting seat 7 may include an axle box body and a first-order rubber spring; the axle box body includes a bearing box and a bearing box base integrally connected to its lower end. The first-order rubber spring is arranged between the bogie and the bearing box base, and the number is two, respectively located on both sides of the bearing box. Each first-order rubber spring includes a metal shell. Each metal shell is provided with a protrusion on one side close to the bearing box, and the protrusion is integrally cast and connected with the metal shell, for example, directly formed on the metal shell by a casting process. Its width is slightly smaller than the width of the vertical slide grooves on both sides of the bearing box, so that the protrusion can slide smoothly in the slide groove in the vertical direction, and at the same time, there can be a certain gap with the inner side wall of the slide groove in the horizontal direction to avoid unnecessary friction and jamming. However, in extreme cases, when a large horizontal load occurs between the bogie and the axle box body, the protrusion and the inner side wall of the slide groove can generate a reliable horizontal limit connection to prevent the first-order rubber spring from having a large horizontal displacement, thereby improving safety and reliability. A vertical slide groove is provided on each side of the bearing box to accommodate the protrusion and provide space and guidance for the up and down sliding of the protrusion. The lifting stop is set at the upper end of the vertical slide and is detachably fixed to the slide by bolts. When the vehicle is assembled and running normally, the bump and the lifting stop are arranged at intervals and no force is generated. The bogie and the wheelset are damped by the primary rubber spring. When the bogie is lifted and transported, the primary rubber spring is stretched until the bump is connected to the lifting stop, and the wheelset is lifted by the force between the bump and the lifting stop, avoiding excessive stretching of the primary rubber spring.

[0080] 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 elaborated here.

[0081] like Figure 2As shown, both ends of the side beam 1 in the length direction are provided with vertical shock absorber 8 mounting seats, which are used to mount the vertical shock absorber 8; the vertical shock absorber 8 mounting seats are welded together with the lower cover plate, and the upper cover plate 11 has an opening for disassembly and assembly of the shock absorber. A tie 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, which cooperates with the tie rod seat 9 to fix the axle box.

[0082] It should be noted that the mounting seat body of the vertical shock absorber 8 mounting seat in this specific embodiment is generally made of high-strength metal materials, such as cast steel or forged steel, to ensure that it can withstand various forces and moments generated by the vertical shock absorber during vehicle operation. In terms of shape, the vertical shock absorber 8 mounting seat is usually 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 8 mounting seat includes a connecting portion with the bogie frame and a connecting portion with the vertical shock absorber; the mounting seat is fixed to the bogie frame by bolt connection, welding or other reliable connection methods. The connection part is usually reinforced to ensure that the connection between the mounting seat and the bogie frame is firm and reliable. Reinforcement ribs, bosses and other structures can be provided to increase the strength and rigidity of the connection part to prevent loosening or deformation during vehicle operation. The mounting seat is provided with a part specifically for mounting the vertical shock absorber, which usually includes a mounting hole, a slot or other connecting structure. The size and shape of the mounting hole match the connecting end of the vertical shock absorber so that the vertical shock absorber can be accurately installed and fixed. Cushioning materials such as gaskets and rubber bushings may be provided to reduce the vibration transmission between the vertical shock absorber and the mounting seat and to protect the mounting seat and the shock absorber from damage.

[0083] In addition, to facilitate installation and maintenance, the design of the mount may take into account the ease of operation and tool use. For example, sufficient space may be provided to allow the use of tools such as wrenches and sockets for tightening and removing bolts. The surface of the mount may be treated with rust and corrosion protection to increase its service life and reliability. Common treatment methods include painting, galvanizing, etc.

[0084] In addition, if Figure 2 As shown, a mounting seat 18 for accessories such as sand spreading and obstacle removal and wheel rim lubrication can also be set 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 obstacle removal and wheel rim lubrication, they can be embedded in the positioning groove to increase structural reliability.

[0085] It should be noted that the sand-spreading and obstacle-removing accessory mentioned in this specific embodiment can be a sand-spreading and obstacle-removing integrated device mounting structure, which is mainly used to spread sand on the rails to increase the friction between the rail wheels and the rails, shorten the system distance and increase the friction of climbing. Specifically, an anti-loosening structure is provided on the sand-spreading and obstacle-removing integrated device mounting structure to force the sand-spreading and obstacle-removing integrated device mounting arm not to fall off from the side beam 1 of the bogie frame when subjected to external force, thereby improving the fixing strength of the sand-spreading and obstacle-removing integrated device mounting arm.

[0086] Furthermore, the anti-loosening structure may include an anti-loosening plate, on which a screw hole is provided; the anti-loosening plate is fixed to the end of the mounting arm of the sand spreading and obstacle removing integrated device by a bolt that can pass through the screw hole. Of course, the anti-loosening structure may also be other structural forms that meet the requirements, which are determined according to actual conditions and will not be elaborated here.

[0087] The above-mentioned accessories for improved wheel rim lubrication can be dry lubrication or wet lubrication. Dry lubrication uses a solid wheel rim lubricating rod as the lubricating medium, and generally a purely mechanical wheel rim lubricator applies the lubricating rod to the wheel rim surface for lubrication. Wet lubrication uses lubricating oil or grease as the lubricating medium, and a complex device integrating mechanics, electrical appliances, pneumatics and intelligent control is used to spray the lubricating medium onto the wheel rim surface. Dry lubrication has been increasingly used due to its advantages of simple and reliable structure, low failure rate and maintenance cost, and stable performance of the lubricating medium.

[0088] Specifically, the accessory for wheel rim lubrication can be set as a wheel rim lubricator, so that the wheel 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.

[0089] 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.

[0090] In a specific embodiment, the bogie includes the above-mentioned bogie frame, brake caliper, lateral shock absorber, height valve, anti-snaking shock absorber, traction rod, and vertical stopper, 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; and the vertical stopper is mounted on the vertical stopper mounting seat 17 of the bogie frame. Of course, according to different actual conditions, other different connection interfaces can also be set on the bogie frame, which are determined according to the actual conditions and will not be repeated here.

[0091] In addition to the above-mentioned bogie frame, the present invention also provides a trailer vehicle including the bogie frame disclosed in the above-mentioned embodiment. For the structures of other parts of the trailer vehicle, please refer to the prior art and will not be described in detail herein.

[0092] The "first" and "second" of the first crossbeam 2 and the second crossbeam 3, the first positioning bolt hole 410 and the second positioning bolt hole 420 mentioned in this application document are only used to distinguish the difference in position, and there is no order of precedence. The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and 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.

[0093] The bogie frame, bogie and trailer vehicle provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode 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 principle of the present invention, several improvements and modifications can be made to the present invention, 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), a second cross beam (3) and an anti-roll torsion bar; 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 connected to the other side beam (1) at the other end; The first crossbeam (2) is provided with a hollow chamber, the hollow chamber passing through both ends of the first crossbeam (2) along the axial direction of the first crossbeam (2); both ends of the axial direction of the first crossbeam (2) are provided with torsion bar mounting seats (120), 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.

2. The bogie frame according to claim 1, 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.

3. The bogie frame according to claim 2, characterized in that: The length of the second cross beam (3) is less than that of the first cross beam (2); the second cross beam (3) is a tubular structure with two axial ends closed; the second cross beam (3) is provided with a traction rod seat (16) for mounting a traction rod, and the traction rod seat (16) is arranged at an axial middle section of the second cross beam (3).

4. The bogie frame according to any one of claims 1 to 3, characterized in that: An upper cover plate (11) is provided at a middle position in the length direction of the side beam (1), 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 along the length direction of the cross beam toward the inner side of the side beam (1) to form a longitudinal auxiliary beam (13).

5. The bogie frame according to claim 4, characterized in that: The first side of the longitudinal auxiliary beam (13) is connected to the first cross beam (2), the second side of the longitudinal auxiliary beam (13) is connected to the second cross beam (3), and the third side of the longitudinal auxiliary beam (13) is 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.

6. The bogie frame according to claim 4, characterized in that: The longitudinal auxiliary beam (13) is provided with a hollow steel plate structure, the steel plate structure is provided with a base portion extending along the plane where the upper cover plate (11) is located, and a mounting platform (1310) fixedly arranged on the base portion, and the mounting platform (1310) is arranged perpendicular to the base portion.

7. The bogie frame according to claim 6, characterized in that: A bending portion (1320) is provided at the edge of the installation platform (1310), the bending portion (1320) is used to be connected to a hoisting device, and an anti-slip convex portion is provided at the end of the bending portion (1320).

8. The bogie frame according to claim 6, characterized in that: The first crossbeam (2) is provided with a vertical stop mounting seat (17), the vertical stop mounting seat (17) is arranged on a side of the first crossbeam (2) facing the second crossbeam (3), and the vertical stop mounting seat (17) and the two mounting platforms (1310) form a three-point support structure.

9. The bogie frame according to claim 4, characterized in that: The upper cover plate (11) is provided with an air spring support seat (14), the air spring support seat (14) is an annular structure, and the air spring support seat (14) is detachably arranged on the upper cover plate (11); The central axis of the air spring support seat (14) is located at the intersection of a middle section in the length direction of the side beam (1) and a middle section in the width direction of the side beam (1).

10. The bogie frame according to any one of claims 1 to 3, characterized in that: 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 is greater than the width of the middle section; and the middle section is a bent structure having an arc-shaped recessed portion.

11. The bogie frame according to any one of claims 1 to 3, characterized in that: 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 side beam (1), and an outward-turned folded edge is provided at the bottom of the spring sleeve (6).

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

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

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