Short-wheelbase bogie frame for meter-gauge hydraulic transmission vehicle

Abstract

The invention discloses a short-wheelbase bogie frame for a meter-gauge hydraulic transmission vehicle. The bogie frame comprises a pair of side beams, a cross beam and a pair of brake hanging seats, wherein the side beams are oppositely arranged in parallel, and the cross beam is arranged between the side beams. One of the pair of brake hanging seats is connected between one of the pair of side beams and one end of the cross beam, and the other one of the pair of brake hanging seats is connected between the other one of the pair of side beams and the other end of the cross beam. The bogie frame replaces a bogie frame with seamless steel tubes as a cross beam structure in the prior art, the space of the bogie is better utilized for component arrangement, the overall dimension of the bogie is reduced, the axle distance of the bogie is shortened, and meanwhile light weight of the bogie frame is achieved to a certain extent.

Description

Technical Field

[0001] The invention relates to a bogie frame of a vehicle, in particular to a short-wheelbase bogie frame for a meter-gauge hydraulic transmission vehicle. Background Art

[0002] Meter-gauge railway refers to a track line with a track gauge of 1000mm. Meter-gauge lines are widely distributed in countries and regions such as South Asia, Southeast Asia, Africa and South America. Due to various reasons such as economy, technology, and infrastructure, the rail transit vehicles commonly used in these countries and regions are mainly diesel locomotives and diesel multiple units. In order to achieve the lightweight design of the bogie of meter-gauge vehicles and take into account the operation of lines without power operation conditions, it is necessary to design a new bogie frame to meet the needs of bogies for meter-gauge railways.

[0003] Patent application with publication number CN112026829A discloses a rail vehicle bogie and a rail vehicle, such as Fig.11 As shown, two pairs of traction rubber pile mounting seats 19 and a pair of longitudinal auxiliary beams 31 are installed on the frame. Each pair of traction rubber pile mounting seats 19 is arranged on a pair of cross beams 20 of the frame in a one-to-one correspondence, a pair of longitudinal auxiliary beams 31 is arranged between the pair of cross beams 20 and fixedly connected to the inner sides of the side beams 29 on the corresponding sides, both longitudinal ends of each longitudinal auxiliary beam 31 are connected to the connected cross beam 20, and transverse stop seats 32 are fixedly connected to the opposite sides of the pair of longitudinal auxiliary beams 31.

[0004] Patent application numbered 200720094536.X discloses a bogie frame, such as Fig.12 As shown, the bogie frame includes two side beams 1, two cross beams 3 and a longitudinal beam 4 between the two cross beams, a positioning seat 2 is welded under the side beam, an air spring seat 11 is fixed on the side beam, vertical shock absorber seats 7 are fixed at both ends of the side beam, a transverse shock absorber seat 8 is fixed on the inner side of the side beam, an anti-snaking shock absorber seat 10 is fixed on the outer side of the side beam, a brake hanger 6 is fixed on the outer side of the cross beam, a traction rod seat 5 is fixed on the inner side, anti-roll torsion bar seats 9 are fixed under both ends of the cross beam, the cross beam 3 adopts a seamless steel pipe structure, and the longitudinal beam 4 is a box-shaped dovetail structure.

[0005] However, the bogie frame of the prior art has the following disadvantages: (1) The crossbeam is in the form of two seamless steel pipes. Due to the limitation of spatial arrangement, the wheelbase of the bogie is relatively large. (2) In addition to the crossbeam connection, an additional longitudinal auxiliary beam needs to be arranged between the two crossbeams, which increases the wheelbase and weight of the bogie frame. (3) A longitudinally extending brake hanger needs to be arranged on the outer side of the two crossbeams, which makes the longitudinal installation distance of the brake unit relatively far. Since the spatial position of the brake unit relative to the wheel is fixed, the longitudinal installation distance of the brake unit directly affects the wheelbase of the bogie. A longer longitudinal installation distance of the brake unit will result in a larger wheelbase of the bogie. In addition, the brake hanger is only used to hang the brake unit and has a single function. (4) A universal joint needs to pass through the bottom of the hydraulic transmission bogie, and the use of a seamless steel pipe crossbeam requires the height of the seamless steel pipe to be raised, thereby passively raising the floor surface height.

[0006] Therefore, in order to achieve the lightweight design of the bogie of the meter-gauge vehicle while taking into account the operation on lines without power operating conditions, it is necessary to design a new hydraulic transmission bogie frame to meet the bogie requirements. Summary of the invention

[0007] In view of the deficiencies in the prior art, an object of the present invention is to provide a short wheelbase bogie frame for a meter-gauge hydraulic transmission vehicle.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides a short wheelbase bogie frame for a meter-gauge hydraulic transmission vehicle, the bogie frame comprising: a pair of side beams, the pair of side beams are arranged relatively parallel; a cross beam disposed between the pair of side beams; and A pair of brake hangers, one of the pair of brake hangers is connected between one of the pair of side beams and one end of the cross beam, and the other of the pair of brake hangers is connected between the other of the pair of side beams and the other end of the cross beam.

[0009] In one embodiment, each of the side beams comprises a side beam upper cover plate, a side beam lower cover plate, and a side beam vertical plate connected between the side beam upper cover plate and the side beam lower cover plate, wherein: At the middle parts of the side beam upper cover plate and the side beam lower cover plate, a side beam upper cover plate extension part and a side beam lower cover plate extension part are respectively extended in a length direction perpendicular to the side beam upper cover plate and the side beam lower cover plate, and parallel connecting vertical plates are connected between the opposite ends of the side beam upper cover plate extension part and the side beam lower cover plate extension part, and one side end surface of the connecting vertical plate is connected to the side beam vertical plate.

[0010] In one embodiment, the cross beam includes an upper cross beam cover plate, a lower cross beam cover plate, and cross beam vertical plates connected between the upper cross beam cover plate and the lower cross beam cover plate, where the upper cross beam cover plate has a "mouth" - shaped structure including a "mouth" - shaped opening. The cross beam vertical plates include a first cross beam vertical plate and a second cross beam vertical plate. The lower cross beam cover plate includes a first lower cross beam cover plate and a second lower cross beam cover plate that are relatively parallel and arranged in a direction perpendicular to the side beam. The first lower cross beam cover plate is connected to the upper cross beam cover plate through the first cross beam vertical plate, and the second lower cross beam cover plate is connected to the upper cross beam cover plate through the second cross beam vertical plate.

[0011] In one embodiment, each of the brake suspension seats has an integral hollow structure. Each of the brake suspension seats includes a top wall and side walls connected to the top wall. The side walls include a first connecting wall, a first mounting wall, a second connecting wall, and a second mounting wall that are connected in sequence, where the first connecting wall is connected to the side beam, the second connecting wall is connected to the cross beam. The height of the first end of the top wall is lower than the height of the second end of the top wall. The first end of the top wall is connected to the first connecting wall, the second end of the top wall is connected to the second connecting wall. An inclined surface is formed between the first end and the second end of the top wall, such that the upper surface of the side beam is lower than the upper surface of the cross beam.

[0012] In one embodiment, a protruding portion extending upward is provided on the surface of the second end of the top wall of the brake suspension seat. Opposite first connecting platforms and second connecting platforms are provided on both sides of the wall surface of the second connecting wall of the brake suspension seat. The first connecting platform and the second connecting platform extend away from the second connecting wall in a direction perpendicular to the wall surface of the second connecting wall. The two ends of the first cross beam vertical plate are respectively provided on the table surfaces of the first connecting platform, and the two ends of the second cross beam vertical plate are respectively provided on the table surfaces of the second connecting platform.

[0013] In one embodiment, the end faces at both ends of the upper cross beam cover plate are respectively connected to the wall surface of the second connecting wall of the brake suspension seat. The end faces at both ends of the first lower cross beam cover plate are respectively connected to the side end faces of the first connecting platform. The end faces at both ends of the second lower cross beam cover plate are respectively connected to the side end faces of the second connecting platform.

[0014] In one embodiment, the side beam upper cover plate extension and the other side end face of the connecting vertical plate are respectively connected to the wall surface of the first connecting wall of the brake suspension seat, and the first connecting wall has a structure that extends downward beyond the bottoms of the first mounting wall, the second connecting wall, and the second mounting wall. The bottom surface of the first connecting wall is connected to the upper surface of the side beam lower cover plate extension.

[0015] In one embodiment, the bogie frame further comprises a pair of transverse stop seats, each of the transverse stop seats comprises a stop vertical plate and a pair of stop connecting plates, each of the stop connecting plates is relatively arranged on the same side of the stop vertical plate, wherein: The stop connecting plate extends away from the stop vertical plate in a direction perpendicular to the stop vertical plate, the stop vertical plate is inserted into the "mouth"-shaped opening and the bottom surface of the stop connecting plate is connected to the upper surface of the crossbeam upper cover plate, and the free end of the stop connecting plate is connected to the protrusion of the brake hanger.

[0016] In one embodiment, a top wall through hole, a first connecting wall through hole and a second connecting wall through hole are respectively provided on the top wall of the brake hanger, the first connecting wall of the brake hanger and the second connecting wall of the brake hanger.

[0017] In one embodiment, the brake mount further includes a pair of brake unit mounting seats, and the pair of brake unit mounting seats are respectively formed on the first mounting wall and the second mounting wall of the brake mount.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are: The bogie frame of the present invention connects the side beam with the cross beam with a "mouth"-shaped opening by using a brake hanger with an integrated hollow structure, ensuring that the side beam and the cross beam of the present invention still maintain a complete box-type structure without other special-shaped structures, and the structure is stable. The bogie frame of the present invention replaces the bogie frame in the prior art that uses seamless steel pipes as the cross beam structure, better utilizes the space of the bogie for component arrangement, reduces the outline size of the bogie, shortens the bogie wheelbase, and the overall width of the bogie frame is small, so it is adapted to the needs of the meter-gauge vehicle bogie, and at the same time, the bogie frame is lightweight to a certain extent.

[0019] The brake hanger of the present invention is arranged between the side beam and the cross beam and is connected to the side beam and the cross beam, and the brake unit mounting seats are formed on both sides of the brake hanger. Compared with the prior art in which a longitudinally extending brake hanger is arranged on the outer side of the cross beam, the brake hanger of the present invention makes the longitudinal installation distance of the brake unit shorter, thereby saving longitudinal space and shortening the wheelbase of the bogie. In addition, the brake hanger of the present invention has the dual functions of bearing and hanging the brake unit, which greatly reduces the weight of the bogie. The brake hanger designed by the present invention and its connection method make it unnecessary to set a longitudinal auxiliary beam structure on the bogie frame, the overall structure is simple, and the longitudinal equipment layout is more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 is a schematic top view of a bogie frame of the present invention; Figure 2 It is a schematic diagram of the partial structure of the side beam of the bogie frame of the present invention; Figure 3 It is a schematic diagram of a partial three-dimensional structure of a bogie frame of the present invention; Figure 4 It is a structural schematic diagram of a brake hanger of a bogie frame of the present invention; Figure 5 for Figure 4 A schematic side view of a brake hanger; Figure 6 Another structural schematic diagram of the brake hanger of the bogie frame of the present invention; Figure 7 It is another structural schematic diagram of the brake hanger of the bogie frame of the present invention; Figure 8 for Figure 3 A schematic side view of the crossbeam and the transverse stop seat; Fig. 9 It is a schematic diagram of the connection between the side beam and the brake hanger of the bogie frame of the present invention; Fig.10 It is another structural schematic diagram of the bogie frame of the present invention; Fig.11 It is a structural schematic diagram of a bogie frame in the prior art; Fig.12 It is a structural schematic diagram of a bogie frame in the prior art. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0023] The terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the present disclosure or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. "Multiple" means two or more, unless otherwise clearly and specifically limited.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present disclosure; the terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. For example, the terms "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "lateral", "longitudinal", "vertical" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0025] In the specification and claims of the present invention and the above-mentioned drawings, when an element is referred to as being "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it may be directly or indirectly connected to the other element.

[0026] like Figure 1 As shown, the present invention provides a short wheelbase bogie frame for a meter-gauge hydraulic transmission vehicle, the bogie frame comprising a pair of side beams 100 arranged relatively parallel, a cross beam 200 arranged between the pair of side beams 100, and a pair of brake hangers 300. One of the pair of brake hangers 300 (for example, facing Figure 1 hour, Figure 1 The brake hanger 300 on the left side of the middle) is connected to one of the pair of side beams 100 (for example, facing Figure 1 hour, Figure 1 The side beam 100 on the left side of the middle) and one end of the cross beam 200 (for example, facing Figure 1 The other of the pair of brake hangers 300 is connected between the other of the pair of side beams 100 and the other end of the cross beam 200.

[0027] like Figure 1 and Figure 2As shown, each side beam 100 includes an upper cover plate 101 of the side beam, a lower cover plate 111 of the side beam, and a side beam vertical plate 121 connected between the upper cover plate 101 and the lower cover plate 111 of the side beam. The side beam 100 is formed into a box structure with stable force-bearing. At the middle parts of the upper cover plate 101 and the lower cover plate 111 of the side beam, an upper cover plate extension 102 of the side beam and a lower cover plate extension 112 of the side beam extend respectively along the length direction perpendicular to the upper cover plate 101 and the lower cover plate 111 of the side beam. Between the opposite ends of the upper cover plate extension 102 and the lower cover plate extension 112 of the side beam, parallel connection vertical plates 131 are connected, and one side end face of the connection vertical plate 131 is connected to the side beam vertical plate 121. In one embodiment, as Figure 2 shown, two parallel connection vertical plates 131 are provided between the left ends of the upper cover plate extension 102 and the lower cover plate extension 112 of the side beam. Similarly, two parallel connection vertical plates 131 are also provided between the right ends of the upper cover plate extension 102 and the lower cover plate extension 112 of the side beam. In one embodiment, a side beam through hole 113 is further provided on the lower cover plate extension 112 of the side beam, and the purpose of weight reduction can be achieved while meeting the functions of the side beam 100.

[0028] As Figure 1 and Figure 3 shown, the cross beam 200 includes an upper cover plate 201 of the cross beam, a lower cover plate 211 of the cross beam, and a cross beam vertical plate 221 connected between the upper cover plate 201 and the lower cover plate 211 of the cross beam. The cross beam 200 is formed into a box structure with stable force-bearing. In one embodiment, the upper cover plate 201 of the cross beam is a "mouth" - shaped structure including a "mouth" - shaped opening 202. The cross beam vertical plate 221 includes a first cross beam vertical plate 222 and a second cross beam vertical plate 223. The lower cover plate 211 of the cross beam includes a first lower cover plate 212 and a second lower cover plate 213 that are relatively parallel and arranged along the direction perpendicular to the side beam 100. The first lower cover plate 212 is connected to the upper cover plate 201 through the first cross beam vertical plate 222, and the second lower cover plate 213 is connected to the upper cover plate 201 through the second cross beam vertical plate 223.

[0029] In one embodiment, as Figure 8 shown, both the first cross beam vertical plate 222 and the second cross beam vertical plate 223 include two parallel vertical plates to play a more stable supporting role for the upper cover plate 201 of the cross beam. Designing the upper cover plate 201 of the cross beam as a structure with a "mouth" - shaped opening and designing the lower cover plate 211 of the cross beam as a split - type structure including the first lower cover plate 212 and the second lower cover plate 213 can make the cross beam 200 have the characteristic of light weight as a whole.

[0030] As Figure 4 、 Figure 5 and Figure 6As shown, each brake hanger 300 is an integrated hollow structure, and each brake hanger 300 includes a top wall 301 and a side wall connected to the top wall 301. The side wall includes a first connecting wall 312, a first mounting wall 313, a second connecting wall 314 and a second mounting wall 315 that are sequentially connected. The first connecting wall 312 is connected to the side beam 100, and the second connecting wall 314 is connected to the cross beam 200. The height of the first end 302 of the top wall 301 is lower than the height of the second end 303 of the top wall 301, the first end 302 of the top wall 301 is connected to the first connecting wall 312, and the second end 303 of the top wall 301 is connected to the second connecting wall 314. An inclined surface is formed between the first end 302 of the top wall 301 and the second end 303 of the top wall 301, so that the upper surface of the assembled side beam 100 is lower than the upper surface of the cross beam 200 (see FIG. 2 ). Fig.10 ).

[0031] There is a height difference between the first end 302 of the top wall 301 of the brake hanger 300 and the second end 303 of the top wall 301. The brake hanger 300 is used for transition in the height direction so that the height of the cross beam 200 from the rail surface can be raised, which is conducive to arranging a universal shaft (not shown) in the longitudinal direction below the cross beam 200. In addition, since the brake hanger 300 is used for transition so that the upper surface of the side beam 100 is lower than the upper surface of the cross beam 200, installation space is reserved for the air spring (not shown) to be installed on the air spring seat 7. The air spring seat 7 is arranged at the lower surface of the middle part of the side beam 100 (see Fig.10 ), while also reducing the amount of welding on the bogie frame.

[0032] like Figure 3 and Figure 4 As shown, a protrusion 304 extending upward is provided on the surface of the second end 303 of the top wall 301 of the brake hanger 300. Opposite first connecting platforms 316 are provided on both sides of the wall surface of the second connecting wall 314 of the brake hanger 300 (see Figure 3 ) and the second connection station 317 (see Figure 4 ), the first connecting platform 316 and the second connecting platform 317 extend away from the second connecting wall 314 in a direction perpendicular to the wall surface of the second connecting wall 314. The two ends of the first cross beam vertical plate 222 are respectively arranged on the surface of the first connecting platform 316 (see Figure 3 ), the two ends of the second crossbeam upright plate 223 are respectively arranged on the table surface of the second connecting platform 317 (not shown). The first connecting platform 316 and the second connecting platform 317 vertically support the crossbeam 200, thereby strengthening the vertical rigidity of the crossbeam 200.

[0033] like Figure 3As shown, the end faces of both ends of the cross beam upper cover plate 201 are respectively connected to the wall surface of the second connecting wall 314 of the brake hanger 300, the end faces of both ends of the first cross beam lower cover plate 212 are respectively connected to the side end faces of the first connecting platform 316, and the end faces of both ends of the second cross beam lower cover plate 213 are respectively connected to the side end faces of the second connecting platform 317. In one embodiment, a gear box hanger 5 and a traction rod seat 6 can also be connected to one free end of the first cross beam lower cover plate 212 and the second cross beam lower cover plate 213. A pair of brake hangers 300 of the present invention are respectively connected to the cross beam upper cover plate 201, the first cross beam vertical plate 222, the second cross beam vertical plate 223, the first cross beam lower cover plate 212 and the second cross beam lower cover plate 213, so that the cross beam 200 and the brake hanger 300 form a whole in the longitudinal direction, which plays a role in strengthening the bearing capacity in the longitudinal direction.

[0034] like Fig. 9 As shown, the side beam upper cover plate extension 102 and the other side end surface of the connecting vertical plate 131 are respectively connected to the wall surface of the first connecting wall 312 of the brake hanger 300. In one embodiment, the first connecting wall 312 has a structure extending downward beyond the bottom of the first mounting wall 313, the bottom of the second connecting wall 314, the bottom of the second mounting wall 315 and the bottom of the brake unit mounting seat 321 (see Figure 5 ), such a structure and the first connecting wall through hole 318 provided on the first connecting wall 312 are used for mounting the lateral shock absorber (not shown) to the lateral shock absorber mounting seat 8 (see Figure 2 ) provides an installation space. The bottom surface 310 of the first connecting wall 312 is connected to the upper surface of the side beam lower cover plate extension 112. In addition, the connection between the side beam 100 and the first connecting wall 312 of the brake hanger 300 is formed into a box-type structure of a stable force-bearing type.

[0035] like Figure 3 and Figure 8As shown, the bogie frame further includes a pair of transverse stopper seats 400, each of which includes a stopper vertical plate 401 and a pair of stopper connecting plates 411, and the pair of stopper connecting plates 411 are relatively arranged on the same side of the stopper vertical plate 401. The stopper connecting plate 411 extends away from the stopper vertical plate 401 in a direction perpendicular to the stopper vertical plate 401, the stopper vertical plate 401 is inserted into the "mouth"-shaped opening 202, and the bottom surface of the stopper connecting plate 411 is connected to the upper surface of the crossbeam upper cover plate 201, and the free end of the stopper connecting plate 411 is connected to the protrusion 304 of the brake hanger 300. The transverse stopper seat 400 is connected to the crossbeam upper cover plate 201, which can provide a force point for the transverse stop, and there is no need to set up other structures to install the transverse stopper seat 400, which makes full use of the existing space and components. The transverse stop seat 400 is connected to both the crossbeam upper cover plate 201 and the brake hanger 300. This connection method forms a box-like structure with stable force characteristics locally.

[0036] like Figure 7 As shown, the brake hanger 300 has a hollow structure, and the top wall 301 of the brake hanger 300, the first connecting wall 312 of the brake hanger 300, and the second connecting wall 314 of the brake hanger 300 are respectively provided with a top wall through hole 305, a first connecting wall through hole 318, and a second connecting wall through hole 319. The top wall through hole 305, the first connecting wall through hole 318, and the second connecting wall through hole 319 can not only play a role in weight reduction, but also facilitate casting. In addition, the first connecting wall through hole 318 also plays a role in reserving space for the installation of a lateral shock absorber.

[0037] like Figure 4 As shown, the brake hanger 300 further includes a pair of brake unit mounting seats 321, and the pair of brake unit mounting seats 321 are respectively formed on the first mounting wall 313 (see Figure 4 ) and the second mounting wall 315 (see Figure 6 The brake hanger 300 is an integrated structure, and the forces of the brake unit mounting bases 321 on both sides can offset each other to ensure a stable stress state.

[0038] In one embodiment, each brake unit mounting seat 321 includes a mounting seat horizontal portion 323 and a mounting seat vertical portion 324 extending upward along the mounting seat horizontal portion 323. The mounting seat vertical portion 324 is arranged at the center line of the mounting seat horizontal portion 323, and the mounting seat horizontal portion 323 and the mounting seat vertical portion 324 are both vertically connected to the first mounting wall 313 (second mounting wall 315). Four brake unit interfaces 322 are arranged on the mounting seat horizontal portion 323 of each brake unit mounting seat 321, and the four brake unit interfaces 322 can be used to install a brake unit (not shown). It should be understood by those skilled in the art that the brake unit mounting seat 321 has a structure matching the brake unit.

[0039] The brake hanger 300 of the present invention is connected with the side beam 100, the cross beam 200, and the transverse stopper 400. The brake hanger 300 is an integrated structure and the brake unit mounting seat 321 is formed at two wall surfaces of the brake hanger 300 that are not involved in the transverse connection. The brake hanger 300 has the characteristics of multi-directional load-bearing and has a brake unit hanging function. Therefore, compared with the conventional bogie frame of the prior art, the bogie frame of the present invention does not need to set a longitudinal auxiliary beam between the cross beams, and does not need to set a longitudinally extending brake hanger structure on the outside of the cross beam, so that the longitudinal installation distance of the brake unit is shorter, saving longitudinal space and shortening the bogie wheelbase.

[0040] It should be particularly pointed out that the various components or steps in the above-mentioned embodiments can be cross-linked, replaced, added, or deleted with each other. Therefore, the combinations formed by these reasonable permutations and combinations should also fall within the scope of protection of the present invention, and the scope of protection of the present invention should not be limited to the embodiments.

[0041] The above are exemplary embodiments disclosed in the present invention. The order disclosed in the above embodiments of the present invention is for description only and does not represent the advantages and disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope disclosed in the embodiments of the present invention (including the claims) is limited to these examples. Various changes and modifications may be made without departing from the scope defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0042] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A short wheelbase bogie frame for a meter-gauge hydraulic transmission vehicle, characterized in that: The bogie frame includes: A pair of side beams, which are arranged relatively parallel to each other; A cross beam, which is arranged between the pair of side beams; and A pair of brake suspension seats, one of the pair of brake suspension seats is connected between one of the pair of side beams and one end of the cross beam, and the other of the pair of brake suspension seats is connected between the other of the pair of side beams and the other end of the cross beam.

2. The bogie frame according to claim 1, characterized in that: Each of the side beams includes an upper side beam cover plate, a lower side beam cover plate, and a side beam vertical plate connected between the upper side beam cover plate and the lower side beam cover plate. Among them, At the middle parts of the upper side beam cover plate and the lower side beam cover plate, an upper side beam cover plate extension and a lower side beam cover plate extension extend respectively along the length direction perpendicular to the upper side beam cover plate and the lower side beam cover plate. Parallel connection vertical plates are connected between the opposite ends of the upper side beam cover plate extension and the lower side beam cover plate extension, and one side end face of the connection vertical plate is connected to the side beam vertical plate.

3. The bogie frame according to claim 2, characterized in that: The cross beam includes an upper cross beam cover plate, a lower cross beam cover plate, and a cross beam vertical plate connected between the upper cross beam cover plate and the lower cross beam cover plate. Among them, The upper cross beam cover plate is a "mouth”-shaped structure including a "mouth”-shaped opening. The cross beam vertical plate includes a first cross beam vertical plate and a second cross beam vertical plate. The lower cross beam cover plate includes a first lower cross beam cover plate and a second lower cross beam cover plate arranged relatively parallel to each other along the direction perpendicular to the side beam. The first lower cross beam cover plate is connected to the upper cross beam cover plate through the first cross beam vertical plate, and the second lower cross beam cover plate is connected to the upper cross beam cover plate through the second cross beam vertical plate.

4. The bogie frame according to claim 3, characterized in that: Each of the brake suspension seats is an integral hollow structure. Each of the brake suspension seats includes a top wall and a side wall connected to the top wall. The side wall includes a first connection wall, a first installation wall, a second connection wall, and a second installation wall connected in sequence. Among them, The first connection wall is connected to the side beam, the second connection wall is connected to the cross beam. The height of the first end of the top wall is lower than the height of the second end of the top wall. The first end of the top wall is connected to the first connection wall, and the second end of the top wall is connected to the second connection wall. An inclined surface is formed between the first end and the second end of the top wall, so that the upper surface of the side beam is lower than the upper surface of the cross beam.

5. The bogie frame according to claim 4, characterized in that: A protruding portion extending upward is provided on the surface of the second end of the top wall of the brake suspension seat. Opposite first connection platforms and second connection platforms are provided on both sides of the wall surface of the second connection wall of the brake suspension seat. The first connection platform and the second connection platform extend away from the second connection wall in the direction perpendicular to the wall surface of the second connection wall. The two ends of the first cross beam vertical plate are respectively arranged on the table surfaces of the first connection platform, and the two ends of the second cross beam vertical plate are respectively arranged on the table surfaces of the second connection platform.

6. The bogie frame according to claim 5, characterized in that: The end faces at both ends of the upper cover plate of the cross beam are respectively connected to the wall surface of the second connecting wall of the brake hanger, the end faces at both ends of the lower cover plate of the first cross beam are respectively connected to the side end surfaces of the first connecting platform, and the end faces at both ends of the lower cover plate of the second cross beam are respectively connected to the side end surfaces of the second connecting platform.

7. The bogie frame according to claim 6, characterized in that: The side beam upper cover plate extension and the other side end surface of the connecting vertical plate are respectively connected to the wall surface of the first connecting wall of the brake hanger, and the first connecting wall has a structure extending downward beyond the bottom of the first mounting wall, the bottom of the second connecting wall and the bottom of the second mounting wall, and the bottom surface of the first connecting wall is connected to the upper surface of the side beam lower cover plate extension.

8. The bogie frame according to claim 7, characterized in that: The bogie frame further comprises a pair of transverse stop seats, each of which comprises a stop vertical plate and a pair of stop connecting plates, each of which is relatively arranged on the same side of the stop vertical plate, wherein: The stop connecting plate extends away from the stop vertical plate in a direction perpendicular to the stop vertical plate, the stop vertical plate is inserted into the "mouth"-shaped opening and the bottom surface of the stop connecting plate is connected to the upper surface of the crossbeam upper cover plate, and the free end of the stop connecting plate is connected to the protrusion of the brake hanger.

9. The bogie frame according to claim 8, characterized in that: The top wall of the brake hanger, the first connecting wall of the brake hanger, and the second connecting wall of the brake hanger are respectively provided with a top wall through hole, a first connecting wall through hole, and a second connecting wall through hole.

10. The bogie frame according to claim 9, characterized in that: The brake hanger further includes a pair of brake unit mounting seats, and the pair of brake unit mounting seats are respectively formed on the first mounting wall and the second mounting wall of the brake hanger.

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