Hanger, wheel-mounted brake caliper assembly, axle-mounted brake caliper assembly, bogie, railway vehicle and method for mounting a hanger

Abstract

The application provides a hanger, a brake caliper assembly and a railway vehicle. The hanger comprises a base having a first side and a second side arranged oppositely; a bogie connecting part protruding from the first side of the base and used for connecting to a bogie; and a caliper connecting part protruding from the second side of the base and used for connecting to a brake caliper unit; wherein the bogie connecting part is provided with an array of through holes and at least one key groove or key; the bogie connecting part is fixed on a longitudinal frame of the bogie through the array of through holes, and the at least one key groove or key on the bogie connecting part is matched with a corresponding key or key groove on the longitudinal frame of the bogie. The design scheme only improves the hanger of a single part in the brake caliper assembly, and the hanger structure is more compact through the connection mode of the key groove matching and screwing, the connection strength with the bogie is high, a greater brake torque can be borne, the installation stability of the brake caliper assembly is high, the product reliability is better, and the existing caliper product does not need to be changed, so that the application range is wide.

Description

Technical Field

[0001] This application relates to the field of rail vehicle braking technology, and in particular to a method for installing a suspension mount, wheel-mounted brake caliper assembly, axle-mounted brake caliper assembly, rail vehicle bogie, rail vehicle, and suspension mount. Background Technology

[0002] As a crucial component in achieving basic braking functions in rail vehicles, current brake caliper assemblies mainly fall into two categories: three-point suspended brake caliper assemblies and four-point compact brake caliper assemblies (also known as single-point suspended brake caliper assemblies). Three-point suspended brake caliper assemblies are typically suitable for bogies with larger brake installation space, while four-point compact brake caliper assemblies require relatively less installation space. Existing bogies generally have the axle boxes located on the outer side of the wheelset. These bogies usually provide the necessary mounting interfaces and space for installing the caliper units; therefore, both three-point suspended brake caliper assemblies and four-point compact brake caliper assemblies are widely used in these traditional bogies.

[0003] In recent years, with the increasing market demand for lightweight, low wheel-rail interaction, low wear, and low noise in rail vehicles, axle box-integrated bogies have become increasingly popular due to their significant advantages such as compact structure, low weight, low energy consumption, and low maintenance costs. Meanwhile, advancements in bearing technology and vehicle lightweight design have provided a mature technological foundation for the commercial application of axle box-integrated bogies. While axle box-integrated bogies can significantly reduce bogie weight, their structural characteristics severely limit the installation space for brake caliper units, particularly making the arrangement of lifting interfaces extremely difficult. This can lead to insufficient installation space not only for three-point lifting brake caliper assemblies but also for compact four-point brake caliper assemblies, which may be unable to be installed due to insufficient space required for their mounting interfaces.

[0004] Therefore, it is desirable to systematically optimize and improve the existing brake caliper unit in terms of its lifting structure, its interface structure with the bogie, and the overall caliper layout, in order to adapt to the technological development trend of lightweight bogies and more compact brake installation space. At the same time, it is also desirable to keep the structure as simple as possible to avoid complex manufacturing processes and assembly, and to avoid high costs. Summary of the Invention

[0005] In view of this, this application provides a mounting bracket, wheel-mounted brake caliper assembly, axle-mounted brake caliper assembly, rail vehicle bogie, rail vehicle, and mounting bracket installation method, thereby effectively solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0006] According to one aspect of this application, a suspender is provided for suspending a brake caliper unit on a longitudinal frame of a bogie, comprising: a base having a first side and a second side disposed opposite to each other; a bogie connecting portion extending from the first side of the base for connection to the bogie; and a caliper connecting portion extending from the second side of the base away from the first side for connection to the brake caliper unit; wherein the bogie connecting portion has an array of through holes and at least one keyway or key; the bogie connecting portion is fixed to the longitudinal frame of the bogie via the array of through holes, and at least one keyway or key on the bogie connecting portion engages with a corresponding key or keyway on the longitudinal frame of the bogie.

[0007] Optionally, the keyway or key of the bogie connection is arranged at an angle relative to the base.

[0008] Optionally, the keyway or key of the bogie connection has an inclination angle of no more than 15° relative to the base.

[0009] Optionally, the array of through holes in the bogie connection is arranged at an angle or parallel to the base.

[0010] Optionally, the through holes in the through hole array are arranged on both sides of the keyway or key on the bogie connection.

[0011] Optionally, in the through-hole array of the bogie connection, the center line connecting adjacent through holes located on the same side of the keyway or key is parallel to the keyway or key, and the center line connecting adjacent through holes located on both sides of the keyway or key is perpendicular to the base.

[0012] Optionally, the through holes in the through hole array are evenly arranged on both sides of the keyway or key on the bogie connection in terms of number and / or relative position.

[0013] Optionally, the keyway or key has a rectangular cross-section.

[0014] Optionally, the bogie connection portion has multiple keyways or keys; wherein the multiple keyways or keys are arranged alternately or in parallel.

[0015] Optionally, when the bogie connection is installed on the bogie, the center line of symmetry of the brake caliper unit lever connected to the caliper connection matches the wheel center or the axle center.

[0016] Optionally, when the clamp connection is connected to the wheel brake caliper unit, the clamp connection is tilted at a preset angle relative to the mounting horizontal plane, so that the center line of symmetry of the lever of the wheel brake caliper unit matches the center of the wheel.

[0017] Optionally, the clamp connection portion is tilted at a preset angle of no more than 15° relative to the mounting horizontal plane.

[0018] Optionally, the clamp connection portion is tilted at a preset angle relative to the mounting horizontal plane by no more than 10°.

[0019] Optionally, the clamp connection portion is tilted at a preset angle relative to the mounting horizontal plane by no more than 5°.

[0020] Optionally, the base is provided with a concave cavity with an opening facing the second side, the concave cavity being used to accommodate the elastic adjustment structure of the hanger of the brake caliper unit.

[0021] Optionally, the bogie connection portion is vertically disposed in the middle of the first side of the base, and the bogie connection portion is connected to the first side of the base through an arc transition.

[0022] Optionally, the bogie connecting part is disposed on the side of the base near the bogie side frame mounting part, and the side of the bogie connecting part with the keyway is flush with the middle side of the base near the bogie.

[0023] Optionally, the upper part of the bogie connection is an arc segment.

[0024] According to another aspect of this application, a wheel-mounted brake caliper assembly is also provided, comprising: a mounting bracket as described above; and a wheel-mounted brake caliper unit mounted on the mounting bracket, wherein the wheel-mounted brake caliper unit forms a friction pair with a brake disc mounted on a wheel via brake pads; wherein, when the mounting bracket is mounted on a bogie, the mounting bracket is tilted at a preset angle relative to the mounting horizontal plane, such that the center line of symmetry of the lever of the wheel-mounted brake caliper unit matches the center of the wheel.

[0025] Optionally, the brake caliper unit further includes a brake yoke; wherein the hanger is located at one end of the brake yoke of the brake caliper unit.

[0026] Optionally, the hanger has an elastic adjustment structure; the elastic adjustment structure includes a pressure plate and an elastic component, and is connected to a top platform on the outer periphery of the hanger's lugs.

[0027] According to another aspect of this application, an axle-mounted brake caliper assembly is also provided, comprising: a mounting bracket as described above; and an axle-mounted brake caliper unit mounted on the mounting bracket, the axle-mounted brake caliper unit forming a friction pair with a brake disc mounted on the axle via brake pads; wherein, when the mounting bracket is mounted on the bogie, the center line of symmetry of the lever of the axle-mounted brake caliper unit matches the center of the axle.

[0028] Optionally, the brake caliper unit includes: a brake cylinder for providing power, a brake yoke driven by the brake cylinder, a pair of caliper levers for transmitting and amplifying the power generated by the brake cylinder, the rear ends of the caliper levers being hinged to the brake cylinder and the brake yoke, and the front ends of each caliper lever being hinged to the brake pad support; a hanger connected at one end to the caliper levers and at the other end to the hanger; under the push of the caliper levers, the brake pad support, which is equipped with brake pads, controllably clamps or releases the brake disc, wherein the hanger is located at one end of the brake yoke of the brake caliper unit.

[0029] Optionally, the hanger has an elastic adjustment structure; the elastic adjustment structure includes a pressure plate and an elastic component, and is connected to a top platform on the outer periphery of the hanger's lugs.

[0030] Optionally, at least one of the keyways on the hanger is horizontally arranged, and at least another keyway is perpendicular to or intersects the horizontally arranged keyway, and has a depth greater than that of the horizontally arranged keyway.

[0031] According to another aspect of this application, a rail vehicle bogie is also provided, comprising: a wheel-mounted brake caliper assembly as described above, and / or an axle-mounted brake caliper assembly as described above.

[0032] Optionally, it also includes a connector having a smooth section and a threaded section; wherein the smooth section is clearance-fitted with an array of through holes on the bogie connection portion of the suspension bracket, and the threaded section is screwed into a threaded hole on the side connection portion of the longitudinal frame of the rail vehicle bogie.

[0033] Optionally, it further includes: a pin having an internally threaded hole in the center in the radial direction, the pin being inserted into a vertical through hole penetrating the longitudinal frame side connection portion of the rail vehicle bogie; wherein the connector passes through the through hole array of the bogie connection portion and is screwed to the internally threaded hole of the pin.

[0034] Optionally, the rail vehicle bogie is an axle box-integrated bogie.

[0035] According to another aspect of this application, a rail vehicle is also provided, comprising: a bogie having a longitudinal frame; wheelsets connected to the bogie via axle boxes; brake discs disposed on wheels or axles; and a brake caliper assembly including a hanger and a brake caliper unit; wherein the two ends of the hanger are respectively connected to the longitudinal frame of the bogie and the brake caliper unit; wherein the hanger is fixed to the longitudinal frame of the bogie via connectors and an array of through holes, and the hanger engages with a corresponding key or keyway on the longitudinal frame of the bogie via a keyway or key.

[0036] Optionally, the hanging bracket is the hanging bracket as described above.

[0037] Optionally, the hanger is arranged inside or outside the longitudinal frame of the bogie.

[0038] Optionally, it includes: at least two of the aforementioned hangers, wherein the at least two aforementioned hangers are simultaneously arranged on the inner front side or the inner rear side of the longitudinal frame of the bogie; or at least two of the aforementioned hangers are simultaneously arranged on the outer front side or the outer rear side of the longitudinal frame of the bogie.

[0039] According to another aspect of this application, a method for installing a suspension mount is also provided, wherein when the bogie connection portion of the suspension mount is installed onto the bogie of a rail vehicle, the center line of symmetry of the brake caliper unit lever connected to the caliper connection portion is aligned with the wheel center or the axle center.

[0040] Optionally, when the clamp connecting part is connected to the wheel brake caliper unit, the clamp connecting part is tilted at a preset angle relative to the mounting horizontal plane, and the center line of symmetry of the lever of the wheel brake caliper unit is matched with the center of the wheel.

[0041] According to the installation method of the mounting bracket, wheel-mounted brake caliper assembly, axle-mounted brake caliper assembly, railway vehicle bogie, railway vehicle, and mounting bracket of this application, the fixing between the two is achieved by bolts or other connecting parts passing through the array of through holes on the bogie connection part and the corresponding array of through holes or threaded holes on the bogie. The braking torque is borne by the interaction between the keyway on the bogie connection part and the corresponding key on the bogie. In this connection method combining keyway fitting and bolt connection, the bolts mainly play a fixing role and provide friction force to the mounting bracket through their preload. The keyway transmits most of the lateral force between the brake caliper assembly and the bogie, enabling it to withstand greater braking torque. This means the bolts are essentially not subjected to tangential shear force (braking torque), ensuring the connection strength between the brake caliper unit and the bogie while preventing damage to the threaded connecting parts passing through the through holes during braking. This further improves the safety factor of the bolts and the installation stability of the brake caliper assembly. Furthermore, because the mounting bracket extends from opposite sides of its base to form the bogie connection and clamp connection, this design achieves both lightweight construction and a simple, compact structure. It also meets the operational requirements of the brake caliper unit, ensuring adequate operating space and minimizing brake arm deformation under braking force, thus increasing the reliability of the brake caliper unit's operation and the stability of the mounting. Moreover, the mounting bracket can be easily designed to accommodate different bogie mounting positions simply by adjusting the angle of the keyway relative to the base. Additionally, the combination of keyway fit and screw connection simplifies the design of the clamp mounting interface between the bogie and the mounting bracket, resulting in a more rational and reliable connection between the interface and the mounting bracket. This makes installation easier, positioning more precise, and enhances train braking safety. Attached Figure Description

[0042] Figure 1 This is a first-view perspective perspective view of an embodiment of the hanger for connecting wheel-mounted brake caliper units according to this application.

[0043] Figure 2 This is a perspective view from a second angle of an embodiment of the hanger for connecting wheel-mounted brake caliper units according to this application.

[0044] Figure 3 This is a front view schematic diagram of an embodiment of the hanger for connecting wheel-mounted brake caliper units according to this application.

[0045] Figure 4 This is a side sectional view of an embodiment of the hanger for connecting wheel-mounted brake caliper units according to this application.

[0046] Figure 5 This is a front view schematic diagram of another embodiment of the hanger for connecting wheel-mounted brake caliper units according to this application.

[0047] Figure 6 This is a perspective view of one embodiment of the hanger for connecting a shaft-mounted brake caliper unit according to this application.

[0048] Figure 7 This is a front view schematic diagram of one embodiment of the hanger of this application.

[0049] Figure 8 This is a side view schematic diagram of one embodiment of the hanger of this application.

[0050] Figure 9 This is a side view schematic diagram of one embodiment of the wheel-mounted brake caliper assembly of this application.

[0051] Figure 10 This is a front view schematic diagram of one embodiment of the wheel-mounted brake caliper assembly of this application.

[0052] Figure 11 This is a top view schematic diagram of one embodiment of the wheel-mounted brake caliper assembly of this application.

[0053] Figure 12 This is a side view schematic diagram of one embodiment of the shaft-mounted brake caliper assembly of this application.

[0054] Figure 13 This is a front view schematic diagram of one embodiment of the shaft-mounted brake caliper assembly of this application.

[0055] Figure 14 This is a top view schematic diagram of one embodiment of the shaft-mounted brake caliper assembly of this application.

[0056] Figure 15 This is a side view of the wheel-mounted brake caliper assembly of this application installed on the vehicle bogie.

[0057] Figure 16 This is a side view of the axle-mounted brake caliper assembly of this application installed on the vehicle bogie.

[0058] Figure 17 This is a top view schematic diagram of the axle-mounted brake caliper assembly of this application installed on the vehicle bogie. Detailed Implementation

[0059] Based on the concept of this application, combined with Figures 1 to 4 and Figure 15 This describes an embodiment of a hanger for connecting a wheel-mounted brake caliper unit, wherein, Figures 1 to 4 The structure of the hanger is shown, and Figure 15The installation environment of the hanger is shown. This hanger is mainly used to suspend the wheel-mounted brake caliper unit on the longitudinal frame 310 of the bogie, thereby achieving the installation connection between the two. Although the hanger 100 is a single component, it can be divided into three parts from the perspective of its structure or function: a base 110, a bogie connecting part 120, and a caliper connecting part 130. The base 110 has a first side 110a and a second side 110b arranged opposite each other. When the direction shown in the figure is used as a coordinate system, the first side 110a above the base 110 has an extended bogie connecting part 120, which is used to connect the bogie 300 to achieve the installation and positioning of the brake assembly relative to the bogie; and the second side 110b below the base 110 has a caliper connecting part 130 extending away from the first side, which is used to connect the brake caliper unit 200 to achieve the positioning between the brake caliper unit and the brake disc. The bogie connecting part 120 has a through-hole array 122 and a keyway 121. In this arrangement, bolts can be used to fix the bogie 300 to the bogie connecting part 120 by passing through the through-hole array 122 and the corresponding through-hole array on the bogie 300. The keyway 121 on the bogie connecting part 120 and the corresponding key on the bogie 300 cooperate to bear forces. The through-hole array 122 in this design may include multiple through holes forming an array. These multiple through holes can be any odd or even number greater than two, and the arrangement of the array can be adapted accordingly. It should be understood that since both the keyway and the through-hole array are located on the bogie connecting part, there can be various positional relationships between them. For example, the keyway may have the same number of through holes in an array on both sides; or the keyway may have different numbers of through holes in an array on both sides; or even one side of the keyway may have all the through holes in an array, while the other side has none. As long as this does not affect the simultaneous implementation of both connection methods in this solution, it should be included in the concept of this application. In this key-and-screw connection method, the bolt mainly serves a fixing function and provides the friction force of the hanger through its preload. The keyway transmits most of the lateral force between the brake caliper and the bogie, so the bolt is essentially not subjected to tangential shear force (braking torque), further improving the safety factor of the bolt and the stability of the brake caliper. This solution achieves both lightweight design and a simple and compact structure, while meeting the operating conditions of the brake caliper unit. Furthermore, the design of the caliper mounting interface on the bogie that matches the hanger is simpler, and the connection between the interface and the hanger is more reliable. Moreover, when this type of hanger is applied to axle box-integrated bogies with limited installation space, its advantages in structural compactness are better demonstrated.

[0060] Of course, variations can be made to the details of the aforementioned solutions to achieve similar technical effects, and these variations should also be included within the scope of protection of this application.

[0061] For example, although the illustrated scheme shows one keyway 121, multiple keyways can also be provided, and these keyways can adopt methods such as... Figure 5 The staggered arrangement shown or the arrangement of multiple keyways (not shown) arranged in parallel can also effectively achieve the function of bearing torque.

[0062] For example, although the illustrated scheme shows a keyway 121 on the hanger 100 and a key at the corresponding position on the bogie that mates with the keyway 121, in practical applications, the two can be reversed. That is, a key is set on the hanger 100, and a keyway mates with the key is set at the corresponding position on the bogie, which can also effectively achieve the function of bearing torque. Furthermore, the key or keyway itself has various structural forms. In this embodiment, a long strip key or keyway with a rectangular cross-section can be used. Its application in this embodiment can also bring better torque-bearing performance.

[0063] Furthermore, on the bogie connection portion 120, the keyway 121 and the array of threaded holes 122 may have a certain positional relationship. For example, the keyway 121 on the bogie connection portion 120 may be provided through the through-hole array 122 of the bogie connection portion 120, and its presence will not damage the structure of any threaded holes. This ensures that there are screw fastenings on both sides of the keyway, thereby ensuring the reliability of the fixation. Furthermore, the center line connecting adjacent through holes on the same side of the keyway 121 or key in the through-hole array 122 of the bogie connection portion 120 may be parallel to the keyway 121 or key, and the center line connecting adjacent through holes on both sides of the keyway 121 or key may be perpendicular to the base 110, thereby further improving the stability of the connection between the two. More specifically, in the figures, the through holes in the through-hole array 122 are evenly arranged on both sides of the keyway 121 or key on the bogie connection portion 120 in terms of number and / or relative position. This makes the mounting bracket easier to process and ensures that the connection between the mounting bracket and the bogie is subjected to uniform stress, further improving its reliability. In addition, it avoids the through hole being too close to the keyway or key, ensuring the strength requirements of the keyway or key.

[0064] More importantly, the keyway 121 of the bogie connection portion 120 of the hanger 100 can be arranged at an angle relative to the base 110. This means that the keyway 121 in the bogie connection portion 120 is designed to be at a certain angle to the horizontal. Due to space constraints, in some applications, it is not possible to vertically install the bogie connection portion of the hanger onto the bogie while simultaneously positioning it relative to the brake disc. In this case, by connecting the bogie connection portion to the bogie at an angle, the clamp connection portion 130 of the hanger 100 can be directly tilted at a preset angle relative to the mounting horizontal plane Z of the bogie 300. This ensures that the center line X of the lever of the wheel-mounted brake caliper unit 200 connected to the clamp connection portion 130 matches the center of the wheel 500, thus guaranteeing that the brake pad 260 installed on the brake caliper unit 200 is in a reasonable position relative to the brake disc 600. This ensures that the symmetrical center line X of the lever of the wheel-mounted brake caliper unit is within a reasonable range above and below the center of the wheel 500. For example, the symmetrical center line X can pass through the center of the wheel 500 or be located above the center. In this case, the brake pads and brake disc contact surfaces are centered and matched, preventing the brake pads from swinging out of the brake disc under both empty and loaded vehicle conditions. Furthermore, the through-hole array 122 of the bogie connection 120 can be arranged at an angle relative to the base 110, so that the through-hole array 122 is parallel to the key or keyway 121. This also facilitates uniform stress distribution between the mounting bracket and the bogie, further improving its reliability. In addition, to ensure that the brake caliper unit meets strength requirements during braking, the inclination angle of the keyway 121 or key of the bogie connection 120 relative to the base 110 can be set to no more than 15°.

[0065] Meanwhile, the base of the suspension mount can adopt an asymmetrical design with inner and outer sides. On the one hand, this is to better match the installation interface of the bogie frame and make full use of the left side of the suspension mount so that the amount of machining is not too large. On the other hand, it is also to move the installation position of the brake caliper unit upward so as not to make the tilt angle of the suspension too large.

[0066] Furthermore, due to overall structural design considerations and to avoid arranging other parts, the mounting point of the hanger 100 on the bogie 300 is relatively low. This results in the center line X of the wheel-mounted brake caliper unit 200 being much lower than the center of the wheel 500 after the brake caliper assembly is installed. In this case, the brake pads of the wheel-mounted brake caliper unit 200 may extend beyond the brake disc, potentially interfering with the wheelset edge. According to the embodiment of this application, when the hanger 100 is assembled with the wheel-mounted brake caliper unit 200 and the bogie 300, the caliper connecting portion 130 of the hanger 100 is tilted at a preset angle relative to the mounting horizontal plane Z of the bogie 300, thereby aligning the center line X of the brake caliper unit 200 connected to the caliper connecting portion 130 with the center of the wheel 500. The "matching" here refers to the fact that the centerline X of the wheel-mounted brake caliper unit 200 may pass through the center of the wheel 500, or it may deviate from the center of the wheel 500 to a certain extent, but this deviation is within the allowable range. Either of these situations can ensure that the centerline X of the brake caliper unit is within a reasonable range above and below the center of the wheel 500, and that the brake pads and brake disc contact surfaces are centered and matched. This prevents the brake pads from swinging out of the brake disc, whether the vehicle is empty or loaded. This design solution solves the installation problem of the brake caliper unit 200 on the axle box-integrated bogie 300 by only improving a single component, the hanger 100, in the brake caliper assembly. It saves installation space on the bogie 300, simplifies the bogie 300 installation interface design, improves the space utilization of the brake caliper unit 200, and requires minimal modifications to existing brake caliper assemblies, making it universally applicable.

[0067] Taking into account both installation space and reliability, the preset angle of inclination of the clamp connection 130 relative to the installation horizontal plane Z is no greater than 15°. For example, this preset angle can be set to no greater than 10°. More specifically, this preset angle can be set to no greater than 5°.

[0068] Furthermore, the base 110 can be configured such that the first side 110a of the base 110 is above the second side 110b; and the bogie connection portion 120 of the hanger extends upward from the first side 110a relative to the base, and the clamp connection portion 130 of the hanger extends downward from the second side 110b relative to the base.

[0069] Alternatively, the bogie connection 120 can be positioned approximately vertically at the center of the first side 110a of the base 110, such as the exact center, and the bogie connection 120 and the first side 110a of the base 110 can be connected by an arc transition, thereby further improving the utilization and compatibility of space and ensuring sufficient strength at that location.

[0070] Meanwhile, the bogie connecting part 120 can be positioned approximately vertically on the side 110c of the base 110 near the side frame mounting part of the bogie 300, and the side 110c of the bogie connecting part 120 with the keyway is flush with the side 110d of the middle section of the side 110c of the base 110 near the bogie 300. This facilitates a close fit between the bogie connecting part and the bogie interface, and makes the connection between the bogie connecting part and the clamp connecting part more compact, thereby achieving a compact and lightweight design of the overall structure of the bogie mount; on the other hand, it also reduces the amount of machining, making manufacturing more convenient and efficient.

[0071] Alternatively, the upper part 120a of the bogie connection 120 can be set as an arc segment, thereby ensuring strength while occupying less space and further reducing the volume and weight of the hanger.

[0072] Furthermore, a concave cavity 111 with an opening facing the second side 110b can be provided below the base 110 of the hanger 100. This concave cavity 111 can be used to accommodate the elastic adjustment structure 211 of the hanger 210 of the brake caliper unit, thereby ensuring the deflection balance of the hanger 100 and the brake caliper unit after installation.

[0073] Optionally, the clamp connection portion 130 of the lifting base 100 may include two generally parallel lifting lugs arranged opposite each other, namely a first lifting lug 130a and a second lifting lug 130b located below the second side 110b of the base. The first lifting lug 130a and the second lifting lug 130b are respectively provided with lifting holes for connecting with the clamp lifting frame, and a mounting surface for mounting an anti-detachment plate and a pin hole are provided on the radially outer end face of one of the first lifting lugs and the second lifting lug, such that the mounting surface and the pin hole are located above or below the lifting hole. In addition, the outer side of one of the lifting lugs has two threaded holes located above the upper lifting lug hole for installing a clamping plate to prevent the pin connecting the lifting base and the lifting frame from moving or falling off.

[0074] Optionally, one or more reinforcing ribs may be provided on the hanger to connect the bogie connection and the clamp connection, so as to increase the connection strength.

[0075] Optionally, the through holes in the through hole array 122 may be countersunk on the side away from the keyway to facilitate the installation of the anti-loosening gasket.

[0076] Similarly, Figure 6 and Figures 16-17 This is a perspective view of one embodiment of the shaft-mounted hanger of this application, wherein, Figure 6 The structure of the hanger is shown, and Figures 16-17This illustrates the installation environment of the mounting bracket. Its design considerations for the keyway and threaded hole are the same as those in the aforementioned embodiments; the specific differences lie only in the specific shape and structure of the base and each mounting part. For example, this shaft-mounted mounting bracket also includes a triangular reinforcing rib extending between the base 110 and the bogie connection 120. Since the bogie connection 120 in this embodiment is a vertically extending plate and the base 110 is a horizontally extending plate, the additional triangular reinforcing rib between them can more effectively increase the structural strength between them. It should be understood that these differences are mainly to adapt to the bogie installation environment and the arrangement of the brake calipers, and therefore will not affect the main concept of this application, and will not be elaborated further here.

[0077] See also Figures 9 to 11 This illustrates one embodiment of the wheel-mounted brake caliper assembly of this application, used for braking a wheel-mounted brake disc, i.e., a brake disc 600 held by the brake pads 260 of the brake caliper unit 200 is arranged on a wheel 500. Specifically, the wheel-mounted brake caliper assembly may include the hanger 100 from any of the embodiments described above or combinations thereof; for example, it may be the hanger 100 combined with the embodiments described above. Figures 1 to 4The aforementioned hanger 100 has an array of through holes 122 and a keyway 121. In this arrangement, bolts pass through the array of through holes 122 on the hanger 100 and the corresponding array of through holes on the bogie 300 to achieve fixation. The keyway 121 on the hanger 100 and the corresponding key on the bogie 300 cooperate to bear the force. In this key-and-bolt connection, the bolts primarily serve a fixing function, and their preload provides friction to the hanger. The keyway transmits most of the lateral force between the brake caliper and the bogie, so the bolts are essentially not subjected to tangential shear force (braking torque), further improving the safety factor of the bolts and the stability of the brake caliper. This solution achieves lightweight design and has the advantages of simple and compact structure, while meeting the operating conditions of the brake caliper unit. Furthermore, the design of the caliper mounting interface on the bogie that matches the hanger is simpler, and the connection between the interface and the hanger is more reliable. Furthermore, the wheel-mounted brake caliper assembly may also include a brake caliper unit 200 mounted on the hanger 100. This wheel-mounted brake caliper unit forms a friction pair with the brake disc 600 mounted on the wheel 500 via a brake pad support. When the hanger 100 is mounted on the bogie 300, the setting of its mounting point on the bogie 300 should generally ensure that the plane of symmetry of the brake caliper unit is not lower than the horizontal reference line of the wheel's center. However, if the mounting point is too low, the center line of symmetry of the caliper lever cannot be designed to be flush with or above the horizontal reference line of the wheel's center. This will result in the brake pads not being able to completely cover the friction surface of the brake disc. Therefore, it is common practice to mount the hanger at a certain angle on the bogie. That is, the hanger 100 is tilted at a preset angle relative to the mounting horizontal plane Z, so that the center line of symmetry X of the brake caliper unit 200 lever matches the center of the wheel 500. The "matching" here means that the symmetrical center line X of the lever of the brake caliper unit 200 may pass through the center of the wheel 500, or it may deviate from the center of the wheel 500 to a certain extent, but this deviation is within the allowable range. Either of these situations can ensure that the symmetrical center line X of the lever of the brake caliper unit is within a reasonable range above and below the center of the wheel, and that the brake pads and brake disc contact surfaces are centered and matched. This prevents the brake pads from swinging out of the brake disc, whether the vehicle is empty or loaded. This design solves the installation problem of the brake caliper unit 200 on the bogie 300 inside the axle box by only improving a single component, the hanger 100, in the brake caliper assembly. It saves installation space on the bogie 300, simplifies the bogie 300 installation interface design, improves the space utilization of the brake caliper unit 200, and requires minimal modification to existing brake caliper assemblies, making it universally applicable.

[0078] Of course, variations can be made to the details of the aforementioned solutions to achieve similar technical effects, and these variations should also be included within the scope of protection of this application.

[0079] For example, the brake caliper unit 200 includes: a brake cylinder 220 for providing power, which may be a conventional brake cylinder without a parking function or a brake cylinder with a parking function. The brake caliper unit 200 also includes a brake yoke 230 driven by the brake cylinder 220, a pair of caliper levers 240 for transmitting and amplifying the power generated by the brake cylinder 220, wherein the rear end of each caliper lever 240 is hinged to the cylinder body of the brake cylinder 220 and the brake yoke 230 respectively, and the front end of each caliper lever 240 is hinged to the brake pad support 250 respectively; and a hanger 210 connected at one end to the caliper lever 240 and at the other end to the hanger 100. Under the push of the caliper lever 240, the brake pad support 250, which is equipped with brake pads 260, controlsably clamps or releases the brake disc 600. At this point, for the brake caliper unit 200, the output force of the brake cylinder 220 is amplified and transmitted to the brake pad support 250 via the caliper lever 240, which pushes the brake pads 260 on both sides to clamp the brake disc 600, generating friction and thus achieving wheel braking. The hanger is located at one end of the brake yoke 230 of the brake caliper unit 200. Because the diameter of the brake yoke 230 at this end is smaller than that of the cylinder body of the brake cylinder 220, it is less likely to interfere with the side beam of the bogie when it extends. Therefore, it can better avoid interference with other parts due to deviations in the extension and retraction displacement of the brake yoke after prolonged use, and makes more efficient use of space.

[0080] Furthermore, the deflection balance of the brake caliper unit in this brake caliper assembly can employ a spring plate structure to provide spring damping and achieve overall stability of the brake caliper unit structure. This structure is simple and practical. For details, see [link to documentation]. Figure 7 and Figure 8 The hanger 210 has an elastic adjustment structure 211; the elastic adjustment structure 211 includes a pressure plate 211a and an elastic component 211b, which are connected to the top platform 212 on the outer periphery of the hanger lug of the hanger 210. As an example, such an elastic component 211b can be composed of multiple stacked planar spring plates, such as three stacked spring plates, with the spring plate pressure plate applied to the spring plates, and finally fastened with two bolts, thereby providing an initial preload. Alternatively, two disc springs can be used in opposition, or other elastic elements can be used instead. The brake cylinder adopts a compact structure to reduce the overall installation space and weight of the brake caliper unit, achieving lightweighting and miniaturization of the brake caliper unit.

[0081] See also Figures 12 to 14This illustration shows an embodiment of the axle-mounted brake caliper assembly of this application, used for braking axle-mounted brake discs, specifically, a brake disc 600 held by the brake pads 260 of the brake caliper unit 200 is arranged on the axle 400. The axle-mounted brake caliper unit forms a friction pair with the brake disc 600 mounted on the wheel 500 via the brake pads 260. When the mounting bracket 100 is mounted on the bogie 300, the symmetrical center line X of the lever of the axle-mounted brake caliper unit matches the center of the axle. Furthermore, the design considerations for the keyway and threaded hole of the mounting bracket are the same as those of the wheel-mounted brake caliper assembly in the aforementioned embodiment; the differences lie only in the specific shape and structure of the base and each mounting part, and the different mounting positions of the brake disc. These differences are merely to adapt to the bogie mounting occasion and the arrangement of the brake calipers, and therefore do not affect the main concept of this application, and will not be elaborated further here.

[0082] Furthermore, for the shaft-mounted brake caliper assembly, its mounting base 100 may have multiple keyways 121. At least one keyway 121 may be horizontally positioned, and at least another keyway 121 may be perpendicular to or intersect the horizontally positioned keyway 121, and have a depth greater than the horizontally positioned keyway 121. In this example, the horizontal keyway 121 primarily serves to withstand shear torque, while the keyways 121 perpendicular to or intersecting it primarily serve to reduce weight.

[0083] The mounting bracket and brake caliper assemblies in any of the foregoing embodiments or combinations thereof can be widely used in the rail transit field, such as in power-centralized EMUs or urban rail trains with speeds of 160 to 250 km / h, as well as power-centralized freight cars with speeds above 160 km / h, and also in higher-speed urban subway and light rail vehicles. They feature lightweight design, compact structure, and small installation space requirements, which can greatly reduce customers' procurement and operation and maintenance costs, and also reflect the development trend of brake caliper assemblies.

[0084] This application is hereby combined with Figure 15A specific embodiment of a rail vehicle is described in detail, illustrating the installation relationship between the vehicle's brake caliper assembly and its bogie. Specifically, the rail vehicle includes at least a bogie 300, wheels 500, brake discs 600, and a brake caliper assembly. The bogie 300 has a longitudinal frame 310 connected to the wheels 500 via axles 400. Brake discs 600 are disposed on the wheels 500. The brake caliper assembly includes at least a hanger 100 and a brake caliper unit 200. The hanger 100 has its two ends connected to the longitudinal frame 310 of the bogie 300 and the brake caliper unit 200, respectively. Specifically, the hanger 100 is fixed to the longitudinal frame 310 of the bogie 300 via a through-hole array 122, and the hanger 100 engages with a corresponding key on the longitudinal frame 310 of the bogie 300 via a keyway 121. In this arrangement, the connection between the hanger 100 and the bogie 300 is achieved by bolts passing through the through-hole array 122 on the hanger 100 and the corresponding through-hole array on the bogie 300. Force bearing is achieved through the interaction between the keyway 121 on the hanger 100 and the corresponding key on the bogie 300. In this key-and-bolt connection, the bolt primarily serves a fixing function, and its preload provides friction to the hanger. The keyway transmits most of the lateral force between the brake caliper and the bogie, ensuring that the bolt is not subjected to tangential shear force (braking torque), thus improving the safety factor of the bolt and the stability of the brake caliper. This solution achieves lightweight design and has the advantages of simple and compact structure, while meeting the operating conditions of the brake caliper unit. Furthermore, the design of the caliper mounting interface on the bogie that matches the hanger is simpler, and the connection between the interface and the hanger is more reliable. Specifically, the hanger in this rail vehicle can also use any of the embodiments described above or combinations thereof, and will thus have corresponding technical effects, which will not be elaborated further here.

[0085] See also Figures 16 to 17 This illustration shows another embodiment of a rail vehicle with a similar vehicle structure to the aforementioned embodiments, differing primarily in the mounting positions of the brake caliper assembly and the brake disc. The brake disc 600 is mounted on the axle 400, for example, in the middle section of the axle 400; while the brake caliper assembly is located inside the longitudinal frame 310 of the bogie 300 to mate with the brake disc 600, thereby enabling assembly and braking. Therefore, the design considerations for the keyways and threaded holes of the brake caliper assembly in this vehicle are the same as those in the aforementioned embodiments, differing only in the specific shape and structure of the base and each mounting part, and the different mounting positions of the brake disc. These differences are merely to adapt to the bogie mounting environment and the arrangement of the brake calipers, and therefore do not affect the main concept of this application, and will not be elaborated further here.

[0086] Furthermore, as can be seen from the teachings of the foregoing embodiments, there are multiple possibilities for the arrangement of the hanger and the vehicle bogie to suit different braking requirements or structural space constraints.

[0087] For example, the hanger 100 can be arranged on the inner or outer side of the longitudinal frame 310 of the bogie 300 as needed to match the axle-mounted braking unit or the wheel-mounted braking unit, respectively. Alternatively, when both types of braking units exist simultaneously, at least two hangers 100 can be provided simultaneously, with the hangers 100 arranged on the inner and outer sides of the longitudinal frame 310 of the bogie 300, respectively. Or, considering that wheel-mounted brake caliper units typically achieve better braking performance through symmetrical arrangement, at least two hangers 100 can be arranged simultaneously on the outer front end or outer rear end of the longitudinal frame 310 of the bogie 300.

[0088] Furthermore, at least two sets of brake caliper assemblies can be configured to simultaneously brake the front and rear of the vehicle. For example, one brake caliper assembly is used to brake the front wheels or front axle, while the other brake caliper assembly is used to brake the rear wheels or rear axle.

[0089] Furthermore, several modifications can be made to further improve the reliability of the connection between the pylon and the vehicle bogie. Examples will be provided below.

[0090] For example, the solution may also include a connector having a smooth section and a threaded section. The smooth section of the connector can be clearance-fitted with the through-hole array 122 on the bogie connection portion 120 of the bogie 100, and the threaded section of the connector can be screwed into the threaded hole on the side connection portion of the longitudinal frame 310 of the bogie 300. Anti-loosening steel wires or anti-loosening washers are provided between the connector and the connection position to reinforce the connection.

[0091] For example, the solution may also include a pin. The pin has an internally threaded hole in its center along the radial direction, and is inserted into a vertical through-hole in the side connection portion of the bogie's longitudinal frame. In this case, the connector passes through the through-hole array 122 of the bogie connection portion and is simultaneously screwed into the internally threaded hole of the pin. This connection structure not only facilitates maintenance during operation and reduces the risk of damage to the side connection portion of the bogie's longitudinal frame, but also extends the service life of the bogie's side connection portion and reduces maintenance costs. Furthermore, since the pin does not require welding, higher-strength materials can be used, further improving the reliability and safety of the connection.

[0092] A method for installing a hanger is also provided, which can be used to install the hanger from any of the foregoing embodiments or combinations thereof onto the bogie of a rail vehicle. Specifically, when the bogie connection portion 120 of the hanger 100 is installed onto the bogie 300 of the rail vehicle, the symmetrical center line X of the brake caliper unit lever connected to the caliper connection portion 130 should be matched with the wheel center or the axle center. This ensures that the brake pads and the brake disc contact surfaces are centered and matched, and that the brake pads do not swing out of the brake disc as much as possible, whether the vehicle is empty or loaded.

[0093] Based on this, when the hanger is used to connect the wheel-mounted brake caliper unit, the setting of its suspension point on the bogie 300 should generally ensure that the symmetrical plane of the brake caliper unit is not lower than the horizontal reference line of the wheel center. However, if the suspension point is too low, the symmetrical center line of the caliper lever cannot be designed to be flush with or above the horizontal reference line of the wheel center. This will cause the brake pads to not be completely centered and cover the friction surface of the brake disc. Therefore, it is usually adopted to install the hanger at a certain angle on the bogie. At this time, the installation method may also include: when the caliper connecting part 130 is connected to the wheel-mounted brake caliper unit, the caliper connecting part 130 is tilted at a preset angle relative to the installation horizontal plane Z, and the symmetrical center line X of the wheel-mounted brake caliper unit lever is matched with the wheel center.

[0094] The above examples primarily illustrate the installation methods of the mounting bracket, wheel-mounted brake caliper assembly, axle-mounted brake caliper assembly, rail vehicle, and mounting bracket. Although only some embodiments of this application have been described, those skilled in the art should understand that this application can be implemented in many other forms without departing from its spirit and scope. Therefore, the examples and embodiments shown are considered illustrative rather than restrictive, and various modifications and substitutions may be made without departing from the spirit and scope of this application as defined by the appended claims.

Claims

1. A suspender (100) for suspending a brake caliper unit (200) on a longitudinal frame (310) of a bogie (300), characterized in that, include: The base (110) has a first side (110a) and a second side (110b) disposed opposite to each other. A protruding bogie connection portion (120) extends from the first side (110a) of the base (110) for connecting to the bogie (300); and A protruding clamp connection portion (130) extends from the second side (110b) of the base (110) away from the first side, and is used to connect to the brake caliper unit (200). The bogie connecting part (120) has an array of through holes (122) and at least one keyway (121) or key; the bogie connecting part (120) is fixed to the longitudinal frame (310) of the bogie (300) via the array of through holes (122), and at least one keyway (121) or key on the bogie connecting part (120) engages with a corresponding key or keyway on the longitudinal frame (310) of the bogie (300), and wherein, after the brake caliper unit (200) is installed in place, the at least one keyway (121) or key is located above the brake caliper unit (200).

2. The hanging bracket (100) according to claim 1, characterized in that, The keyway (121) or key of the bogie connection (120) is arranged at an angle relative to the base (110).

3. The hanging bracket (100) according to claim 2, characterized in that, The tilt angle of the keyway (121) or key of the bogie connection (120) relative to the base (110) is no greater than 15°.

4. The hanging bracket (100) according to claim 1, characterized in that, The array of through holes (122) of the bogie connection (120) is arranged at an angle or parallel to the base (110).

5. The hanging bracket (100) according to claim 1, characterized in that, The through holes in the through hole array (122) are arranged on both sides of the keyway (121) or key on the bogie connection part (120).

6. The hanging bracket (100) according to claim 5, characterized in that, The center line connecting adjacent through holes in the through hole array (122) of the bogie connection part (120) on the same side of the keyway (121) or key is parallel to the keyway (121) or key, and the center line connecting adjacent through holes on both sides of the keyway (121) or key is perpendicular to the base (110).

7. The hanging bracket (100) according to claim 5, characterized in that, The through holes in the through hole array (122) are evenly arranged in number and / or relative position on both sides of the keyway (121) or key on the bogie connection (120).

8. The hanging bracket (100) according to claim 1, characterized in that, The keyway (121) or key has a rectangular cross-section.

9. The hanging bracket (100) according to claim 1, characterized in that, The bogie connection part (120) has multiple keyways (121) or keys; wherein the multiple keyways (121) or keys are arranged alternately or in parallel.

10. The hanging bracket (100) according to claim 1, characterized in that, When the bogie connection (120) has been installed on the bogie (300), the center line (X) of the brake caliper unit lever connected to the caliper connection (130) matches the wheel center or the axle center.

11. The hanging bracket (100) according to claim 10, characterized in that, When the clamp connection part (130) is connected to the wheel brake caliper unit, the clamp connection part (130) is tilted at a preset angle relative to the mounting horizontal plane (Z), so that the center line (X) of the lever of the wheel brake caliper unit matches the center of the wheel.

12. The hanging bracket (100) according to claim 11, characterized in that, The clamp connection (130) is tilted at a preset angle of no more than 15° relative to the mounting horizontal plane (Z).

13. The hanging bracket (100) according to claim 12, characterized in that, The clamp connection (130) is tilted at a preset angle of no more than 10° relative to the mounting horizontal plane (Z).

14. The hanging bracket (100) according to claim 13, characterized in that, The clamp connection (130) is tilted at a preset angle of no more than 5° relative to the mounting horizontal plane (Z).

15. The hanging bracket (100) according to claim 1, characterized in that, The base (110) is provided with a concave cavity (111) with an opening facing the second side (110b), the concave cavity (111) being used to accommodate the elastic adjustment structure (211) of the hanger (210) of the brake caliper unit.

16. The hanging bracket (100) according to claim 1, characterized in that, The bogie connection part (120) is vertically disposed in the middle of the first side (110a) of the base (110), and the bogie connection part (120) is connected to the first side (110a) of the base (110) by an arc transition.

17. The hanging bracket (100) according to claim 1, characterized in that, The bogie connection part (120) is located on the side (110c) of the base (110) near the side frame mounting part of the bogie (300), and the side of the bogie connection part (120) with the keyway is flush with the middle side (110d) of the side (110c) of the base (110) near the bogie (300).

18. The hanging bracket (100) according to claim 1, characterized in that, The upper part (120a) of the bogie connection part (120) is an arc segment.

19. A wheel-mounted brake caliper assembly, characterized in that, include: The mounting bracket (100) as described in any one of claims 1 to 18; and the wheel-mounted brake caliper unit mounted on the mounting bracket (100), the wheel-mounted brake caliper unit forming a friction pair with the brake disc (600) mounted on the wheel (500) via brake pads; wherein, when the mounting bracket (100) is mounted on the bogie (300), the mounting bracket (100) is tilted at a preset angle relative to the mounting horizontal plane (Z), such that the center line (X) of the lever of the wheel-mounted brake caliper unit matches the center of the wheel.

20. The wheel-mounted brake caliper assembly according to claim 19, characterized in that, The brake caliper unit (200) further includes a brake yoke (230); wherein the hanger is located at one end of the brake yoke (230) of the brake caliper unit (200).

21. The wheel-mounted brake caliper assembly according to claim 20, characterized in that, When the base (110) of the hanger (100) is provided with a concave cavity (111) with an opening facing the second side (110b), the elastic adjustment structure (211) of the hanger (210) of the brake caliper unit (200) is housed in the concave cavity (111); the elastic adjustment structure (211) includes a pressure plate (211a) and an elastic component (211b), and is connected to the top platform (212) on the outer peripheral surface of the lug of the hanger (210).

22. A shaft-mounted brake caliper assembly, characterized in that, include: The mounting bracket (100) as described in any one of claims 1 to 18; and the axle-mounted brake caliper unit mounted on the mounting bracket (100), the axle-mounted brake caliper unit forming a friction pair with a brake disc (600) mounted on the axle (400) via brake pads; wherein, when the mounting bracket (100) is mounted on the bogie (300), the center line (X) of the lever of the axle-mounted brake caliper unit matches the center of the axle.

23. The shaft-mounted brake caliper assembly according to claim 22, characterized in that, The brake caliper unit (200) includes: a brake cylinder (220) for providing power; a brake yoke (230) driven by the brake cylinder (220); a pair of caliper levers (240) for transmitting and amplifying the power generated by the brake cylinder (220); the rear end of the caliper levers (240) is hinged to the brake cylinder (220) and the brake yoke (230), and the front end of each caliper lever (240) is hinged to the brake pad holder (250); a hanger (210) with one end connected to the caliper levers (240) and the other end connected to the hanger (100); under the push of the caliper levers (240), the brake pad holder (250) equipped with brake pads (260) is controlled to clamp or release the brake disc (600), wherein the hanger is located at one end of the brake yoke (230) of the brake caliper unit (200).

24. The shaft-mounted brake caliper assembly according to claim 23, characterized in that, The hanger (210) has an elastic adjustment structure (211); the elastic adjustment structure (211) includes a pressure plate (211a) and an elastic component (211b), and is connected to the top platform (212) on the outer peripheral surface of the lug of the hanger (210).

25. The shaft-mounted brake caliper assembly according to claim 22, characterized in that, At least one of the keyways (121) on the hanger (100) is horizontally arranged, and at least another keyway (121) is perpendicular to or intersects the horizontally arranged keyway (121) and has a depth greater than that of the horizontally arranged keyway (121).

26. A bogie for a rail vehicle, characterized in that, include: The wheel-mounted brake caliper assembly as described in any one of claims 19 to 21, and / or the shaft-mounted brake caliper assembly as described in any one of claims 22 to 25.

27. The rail vehicle bogie according to claim 26, characterized in that, It also includes a connector having a smooth section and a threaded section; wherein the smooth section is clearance-fitted with the through-hole array (122) on the bogie connection portion (120) of the hanger (100), and the threaded section is screwed to the threaded hole on the side connection portion of the longitudinal frame (310) of the rail vehicle bogie (300).

28. The rail vehicle bogie according to claim 27, characterized in that, Also includes: A pin having an internally threaded hole in the center in the radial direction is inserted into a vertical through hole in the side connection of the longitudinal frame (310) of the rail vehicle bogie (300); wherein the connector passes through the through hole array (122) of the bogie connection and is screwed to the internally threaded hole of the pin.

29. The rail vehicle bogie according to any one of claims 26 to 28, characterized in that, The rail vehicle bogie is an axle box-integrated bogie.

30. A rail vehicle, characterized in that, include: Bogie (300) having a longitudinal frame (310); A pair of wheels (500) are connected to the bogie (300) via axle boxes. Brake disc (600), which is arranged on wheel (500) or axle (400); as well as The brake caliper assembly includes a mounting bracket (100) and a brake caliper unit (200); the two ends of the mounting bracket (100) are respectively connected to the longitudinal frame (310) of the bogie (300) and the brake caliper unit (200). The hanger (100) is fixed to the longitudinal frame (310) of the bogie (300) via a connector and an array of through holes (122), and the hanger (100) is engaged with a corresponding key or keyway on the longitudinal frame (310) of the bogie (300) via a keyway (121) or a key. Wherein, the hanging bracket (100) is the hanging bracket (100) as described in any one of claims 1 to 18.

31. The rail vehicle according to claim 30, characterized in that, The hanger (100) is arranged inside or outside the longitudinal frame (310) of the bogie (300).

32. The rail vehicle according to claim 30, characterized in that, include: At least two of the aforementioned hangers (100) are simultaneously arranged on the inner front end or inner rear end of the longitudinal frame (310) of the bogie (300); or at least two of the aforementioned hangers (100) are simultaneously arranged on the outer front end or outer rear end of the longitudinal frame (310) of the bogie (300).

33. A method for installing a hanging bracket, used for the hanging bracket (100) as described in any one of claims 1 to 18, characterized in that, When the bogie connection part (120) of the suspension bracket is installed onto the bogie (300) of the rail vehicle, the center line (X) of the brake caliper unit lever connected to the caliper connection part (130) is aligned with the wheel center or the axle center.

34. The method for installing the hanging bracket according to claim 33, characterized in that, When the clamp connecting part (130) is connected to the wheel brake caliper unit, the clamp connecting part (130) is tilted at a preset angle relative to the mounting horizontal plane (Z), and the center line (X) of the symmetry of the lever of the wheel brake caliper unit is matched with the center of the wheel.

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