Bogie frame, bogie and rail vehicle

Abstract

The invention discloses a bogie frame, a bogie and a railway vehicle. The bogie frame comprises a main frame body, an auxiliary frame body and a brake mounting seat, the main framework body comprises two side beams, a first cross beam and a second cross beam; a first mounting hole and a second mounting hole are formed in each side beam; two ends of the first cross beam respectively penetrate through the two first mounting holes and are fixedly connected with the two side beams; two ends of the second cross beam respectively penetrate through the two second mounting holes and are fixedly connected with the two side beams; the auxiliary framework body is located between the two side beams and penetrates through the first cross beam and the second cross beam. The secondary framework body comprises two longitudinal beams and two reinforcing beams; the two reinforcing beams are perpendicular to the longitudinal beams and arranged at the ends of the longitudinal beams. The brake mounting base is of a double-clamping-plate structure and is fixedly connected with the reinforcing beam. The bogie frame can meet the strength requirements for the running speed of 160 km / h and the axle load of 21 t or above, meanwhile, the installation strength of a brake and the braking effect of a vehicle are met, and safe running of the vehicle is guaranteed.

Description

Technical Field

[0001] The invention relates to a bogie frame, a bogie and a rail vehicle, and in particular to a bogie frame, a bogie and a rail vehicle for high speed and heavy load. Background Art

[0002] The bogie frame is the foundation of the bogie. It integrates the various parts of the bogie into a whole. The frame mainly bears and transmits various forces and loads. Its structural form and size must meet the structural, shape and assembly requirements of other parts of the bogie. Its structural strength has a significant impact on the overall strength of the bogie. The brake mounting seat on the frame is closely related to the brake connection and brake action, and its connection strength directly affects the vehicle's braking performance. The bogie is an important component of rail vehicles and plays a vital role in the running quality of the vehicle and the transportation safety of passengers and goods. With the advantages of green, environmentally friendly and low-cost transportation of railways, more and more high-value-added goods choose to be transported by rail vehicles, which needs to meet the demand for high loads.

[0003] Generally, the ways to increase the load of rail vehicles include increasing the axle weight and using multi-axle bogies. Multi-axle bogies cannot run at high speeds due to their curve passing performance limitations. High-speed rail vehicles with a speed of 160km / h all use a two-axle bogie with an "H" type frame structure, which is suitable for axle weights below 18t. The axle weight of general high-speed passenger car bogies is basically around 14t, which is suitable. The axle weight of high-speed freight car bogies generally does not exceed 21t, and its dynamic performance is far worse than that of high-speed passenger car bogies.

[0004] So far, there is no bogie frame and bogie suitable for operating speeds of 160km / h and above, axle loads of more than 21t, and dynamic performance equivalent to that of high-speed passenger cars. Summary of the invention

[0005] In view of this, one object of the present invention is to provide a bogie frame, which can meet the strength requirements of a running speed of 160 km / h and an axle load of more than 21 tons, and at the same time meet the brake installation strength and vehicle braking effect, to ensure the safe operation of the vehicle. Another object of the present invention is to provide a bogie, which includes the above-mentioned bogie frame, and can meet the high-speed running speed requirements of large axle weight and high-load vehicles. Another object of the present invention is to provide a rail vehicle.

[0006] The present invention adopts the following technical solutions to achieve the above-mentioned purpose.

[0007] In one aspect, the present invention provides a bogie frame, comprising a main frame body, a secondary frame body and a brake mounting seat; the main frame body, the secondary frame body and the brake mounting seat form a "A"-shaped frame structure;

[0008] The main frame body includes two side beams, a first cross beam and a second cross beam; each side beam is provided with a first mounting hole and a second mounting hole; the two first mounting holes are arranged opposite to each other, and the two second mounting holes are arranged opposite to each other; the two ends of the first cross beam are respectively passed through the two first mounting holes, thereby being fixedly connected to the two side beams; the two ends of the second cross beam are respectively passed through the two second mounting holes, thereby being fixedly connected to the two side beams;

[0009] The secondary frame body is located between the two side beams; the secondary frame body includes two longitudinal beams and two reinforcing beams; the two reinforcing beams are arranged at the ends of the longitudinal beams in a direction perpendicular to the longitudinal beams; the two longitudinal beams and the two reinforcing beams form a "mouth"-shaped structure; the first cross beam and the second cross beam are arranged to penetrate the two longitudinal beams;

[0010] The brake mounting seat is configured as a double-clamping plate structure and is fixedly connected to the reinforcing beam; the length direction of the clamping plate is consistent with the length direction of the side beam.

[0011] The bogie frame formed in this way can meet the strength requirements of a running speed of 160km / h and an axle load of more than 21t.

[0012] In the present invention, the main frame body mainly includes two side beams, a first cross beam and a second cross beam. The two side beams have the same structure and are symmetrically arranged. They can be set as a welded box fish belly structure, with small cross-sectional areas at the left and right ends and a larger cross-sectional area in the middle part. The middle part has a certain curvature, forming a structure similar to a fish belly, which has sufficient rigidity and strength to meet the axle weight requirements during the service life. The first cross beam and the second cross beam can be set as a cylindrical structure, and the lengths of the two can be set as needed, and can be the same or different. The two side beams can be set relatively parallel; the first cross beam and the second cross beam can be set relatively parallel.

[0013] According to the bogie frame of the present invention, preferably, it also includes a primary suspension mounting seat, a secondary suspension mounting seat, an anti-snaking shock absorber mounting seat and a vertical shock absorber mounting seat; the primary suspension mounting seat is fixedly connected to the bottom of the side beam for installing the primary suspension device; the secondary suspension mounting seat is arranged above the belly of the side beam for installing the secondary suspension device; the anti-snaking shock absorber mounting seat is arranged on the outer side of the side beam; the vertical shock absorber mounting seat is arranged on the upper surface of the side beam.

[0014] In the present invention, a series of mounting seats are provided on the side beam for installing various required equipment. A first-series suspension mounting seat is fixedly connected to the lower part of the side beam for installing a first-series suspension device. Preferably, the first-series suspension mounting seat is fixedly connected to the lower part of the side beam near the end. A second-series suspension mounting seat is provided above the belly of the side beam for installing a second-series suspension device, and at least one of them is provided. In some embodiments, a second-series suspension mounting seat is provided, which is provided at the middle position above the belly of the side beam. In other embodiments, more than two are provided, which are symmetrically distributed according to the center position of the side beam. The anti-snaking damper mounting seat is provided on the outer side of the side beam for installing an anti-snaking damper, and its position can be arranged as needed, for example, it is provided in the middle of the outer side of the side beam; it can also be provided on the outer side of the first mounting hole of the side beam (i.e., the end position of the first cross beam). A vertical damper mounting seat is provided on the upper surface of the side beam, which is used to install a vertical damper to overcome the vertical vibration of the rail vehicle during operation. The vertical shock absorber mounting seat can be arranged at a position close to both ends, a middle position or a position off-center on the upper surface of the side beam; preferably, it is arranged at a position close to both ends on the upper surface of the side beam.

[0015] According to the bogie frame of the present invention, preferably, it also includes an end expansion interface, which is arranged at both ends of the side beam and is used for installing external equipment required by the vehicle.

[0016] In the present invention, each longitudinal beam can be configured as a welded box-type structure, and the longitudinal section area of ​​the middle part is larger than the longitudinal section area of ​​the two end parts, forming a structure that gradually decreases upward in the direction of the two end parts. The two reinforcing beams are configured as cylindrical structures and are vertically arranged at the ends of the longitudinal beams. The two longitudinal beams and the two reinforcing beams form a "mouth"-shaped structure. This has sufficient rigidity and strength to meet the requirements of large axle weight, high load and modularization.

[0017] According to the bogie frame of the present invention, preferably, each of the longitudinal beams includes a first end, a middle portion and a second end which are connected in sequence; the first end and the second end are connected smoothly through the middle portion; the longitudinal sections of the first end and the second end are inclined upward and gradually reduced in a direction away from the middle portion.

[0018] In the present invention, the upper surface and the lower surface of the first end may not be arranged in parallel, the upper surface and the lower surface of the second end may not be arranged in parallel, and the upper surface and the lower surface of the middle portion may be arranged in parallel. The upper surface and the lower surface of the first end and the second end are connected by a smooth transition through the upper surface and the lower surface of the middle portion, respectively. The front side surfaces of the first end, the middle portion, and the second end are coplanar. The rear side surfaces of the first end, the middle portion, and the second end are coplanar. A similar arc-shaped recessed structure is formed between the upper surface of the first end, the upper surface of the middle portion, and the upper surface of the second end. In this way, the first end, the middle portion, and the second end are integrally formed to form a longitudinal beam. The longitudinal beam of such a structure has sufficient rigidity and strength to meet the requirements of large axle weight and high load.

[0019] According to the bogie frame of the present invention, preferably, the first crossbeam is arranged through the two first end portions; the second crossbeam is arranged through the two second end portions;

[0020] One of the reinforcing beams is disposed at one end of the first end away from the middle portion along a direction perpendicular to the first end, and the other reinforcing beam is disposed at one end of the second end away from the middle portion along a direction perpendicular to the second end;

[0021] The lateral vibration damper mounting seat is arranged below the middle portion and is used for connecting the lateral vibration damper.

[0022] In the present invention, the reinforcing beam can be set as a cylindrical structure, and two beams are set. A first beam hole and a first connecting seat can be set on each first end. The two first beam holes are arranged oppositely. The first beam hole can be set at the belly of the first end. The second connecting seat can be set closely on the inner wall of the first beam hole. The first beam passes through the two first beam holes respectively, and is fixedly connected to the longitudinal beam at the second connecting seat. The first connecting seat can be set at one end of the first end away from the middle part. The two first connecting seats are arranged oppositely. The first connecting seat can be set as a curved surface structure, and its shape and curvature match the surface curvature of the reinforcing beam, which is used to connect the reinforcing beam to the longitudinal beam. A second beam hole and a fourth connecting seat can be set on each second end. The second beam hole can be set at the belly of the second end, and the two second beam holes are arranged oppositely. The third connecting seat can be set closely on the inner wall of the second beam hole. The second beam passes through the two second beam holes respectively, and is fixedly connected to the longitudinal beam at the third connecting seat. The fourth connecting seat can be set at one end of the second end away from the middle part. The two fourth connecting seats are arranged oppositely. The fourth connecting seat can be set as a curved surface structure, the curvature of which matches the curvature of the surface of another reinforcing beam, and is used to connect the other reinforcing beam to the longitudinal beam. Thus, the two reinforcing beams are respectively arranged at the ends of the two longitudinal beams in a direction perpendicular to the longitudinal beam. A transverse damper mounting seat can be arranged below each intermediate portion. The two transverse damper mounting seats can be arranged diagonally for connecting the transverse dampers.

[0023] In the present invention, the brake mounting seat is used to mount the vehicle brake device. It can be provided in multiple numbers according to actual conditions. The brake mounting seat can be a forged, cast or welded double-clamping plate structure, which can meet the braking force requirements of large axle-load rail vehicles.

[0024] According to the bogie frame of the present invention, preferably, the brake mounting seat comprises two clamping plate bodies and a connecting portion; the two clamping plate bodies are relatively parallelly arranged, respectively vertically connected to the connecting portion, and the connection portion has a smooth transition.

[0025] According to the bogie frame of the present invention, preferably, it further comprises a first positioning connection seat, which is arranged at one end of the clamping plate body and is used to be connected to a brake device installed on the bogie;

[0026] A first positioning portion is provided on the other end of each clamping plate body for being fixedly connected with the reinforcing beam.

[0027] In the present invention, each clamp body may be provided with a first edge portion, a transition portion and a second edge portion, and the three are integrally formed. The upper edge of the first edge portion is in a straight line shape, and the lower edge is in an inwardly concave arc shape. A first positioning connection seat is provided at one end of the first edge portion away from the transition portion, which is provided as a rib plate drilling structure for connecting to a brake device installed on the bogie. The upper edge and the lower edge of the transition portion are both linear. The upper edge and the lower edge of the second edge portion are both in an arc shape. A first positioning portion is provided at one end of the second edge portion away from the transition portion, which is a curved surface structure that matches the shape and size of the outer wall of the reinforcing beam and is used to be fixedly connected to the reinforcing beam. The two first positioning portions are arranged in parallel to increase the strength of the brake hanger.

[0028] According to the bogie frame of the present invention, preferably, a plurality of second positioning connection seats are arranged on the connection portion, the plurality of second positioning connection seats are arranged relatively parallel to each other, and each of the second positioning connection seats is arranged to be connected to a braking device installed on the bogie.

[0029] In the present invention, the connection part may include a connection body, which is configured as a plate-like structure, and the two ends of the connection body may be respectively vertically fixed to the two ends of the transition part, and the connection part has a smooth transition. A plurality of second positioning connection seats are vertically arranged below the connection body, and each second positioning connection seat may be configured as a rib plate drilling structure for connecting to a brake device installed on the bogie. According to a specific embodiment of the present invention, two positioning connection seats are arranged below the connection body, and the two are arranged relatively parallel.

[0030] In the present invention, the first positioning connection seat and the second positioning connection seat can be set as a rib plate drilling structure, which is connected to the braking device installed on the bogie through fasteners such as bolts and pins to ensure the normal action and movement of the brake in the braking device.

[0031] On the other hand, the present invention further provides a bogie, preferably comprising the bogie frame as described above. Devices required for vehicle driving, such as wheels, brakes, primary suspension devices, secondary suspension devices, shock absorbers, etc., are installed on the bogie frame to form a bogie. By matching the parameters of each device, the vehicle can meet the requirements of high speed and high dynamics performance.

[0032] In another aspect, the present invention further provides a rail vehicle, preferably comprising a car body and the bogie as described above. The car body is arranged on the bogie, and the bogie has load-bearing, guiding and vibration-reducing functions for the entire vehicle. When the strength and dynamic performance of the bogie meet the requirements, the load-bearing capacity and running quality of the rail vehicle are improved accordingly.

[0033] The bogie frame of the present invention can meet the operation requirements of high-speed and large-axle-weight bogies, especially bogies with an operating speed of 160 km / h and an axle-weight of more than 24 tons. At the same time, it meets the brake installation strength and vehicle braking effect, ensuring the safe operation of the vehicle. In addition, the overall assembly is simple, and the bogie structure modularization can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the bogie frame of the present invention.

[0035] Figure 2 It is a structural schematic diagram of the main frame body of the present invention.

[0036] Figure 3 It is a schematic structural diagram of the auxiliary frame body of the present invention.

[0037] Figure 4 It is a structural schematic diagram of the brake mounting seat of the present invention.

[0038] Figure 5 It is a structural schematic diagram of the auxiliary frame body and the brake mounting seat connected to each other in the present invention.

[0039] The following are the descriptions of the reference numerals:

[0040] 1-main frame, 11-side beam, 111-first mounting hole, 112-second mounting hole, 113-primary suspension mounting seat, 114-secondary suspension mounting seat, 115-anti-snaking shock absorber mounting seat, 116-vertical shock absorber mounting seat, 117-end expansion interface, 12-first cross beam, 13-second cross beam;

[0041] 2-sub-frame body, 21-longitudinal beam, 211-first end, 2111-first cross beam hole, 2112-first connecting seat, 212-middle part, 2121-lateral shock absorber mounting seat, 213-second end, 2131-second cross beam hole, 2132-fourth connecting seat, 22-reinforcement beam;

[0042] 3-brake mounting seat, 31-clamp body, 311-first edge portion, 3111-first positioning connecting seat, 312-transition portion, 313-second edge portion, 3131-first positioning portion, 32-connecting portion, 321-connecting body, 322-second positioning connecting seat. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

[0044] Example 1

[0045] Figure 1It is a structural schematic diagram of the bogie frame of the present invention. Figure 2 It is a structural schematic diagram of the main frame body of the present invention. Figure 3 It is a schematic structural diagram of the auxiliary frame body of the present invention. Figure 4 It is a structural schematic diagram of the brake mounting seat of the present invention. Figure 5 It is a structural schematic diagram of the auxiliary frame body and the brake mounting seat connected to each other in the present invention.

[0046] like Figure 1 As shown, the bogie frame of the present invention is suitable for high speed and heavy load, and comprises a main frame body 1, a secondary frame body 2 and a brake mounting seat 3. The main frame body 1, the secondary frame body 2 and the brake mounting seat 3 form a "A"-shaped frame structure. The bogie frame formed in this way can meet the strength requirements of an axle load of more than 21t.

[0047] like Figure 2 As shown, the main frame body 1 includes a side beam 11, a first cross beam 12 and a second cross beam 13. There are two side beams 11, which are arranged relatively parallel to each other, and the first cross beam 12 and the second cross beam 13 are arranged relatively parallel to each other. The first cross beam 12 and the second cross beam 13 are arranged between the two side beams 11. Specifically, each side beam 11 is a welded box fish belly structure, and the belly of each side beam 11 is respectively provided with a first mounting hole 111 and a second mounting hole 112. The two first mounting holes 111 are arranged opposite to each other, and the two second mounting holes 112 are arranged opposite to each other. The two ends of the first cross beam 12 are respectively penetrated into the two first mounting holes 111, so that the first cross beam 12 is fixedly connected to the two side beams 11. The two ends of the second cross beam 13 are respectively penetrated into the two second mounting holes 112, so that the second cross beam 13 is fixedly connected to the two side beams 11.

[0048] Each side beam 11 is provided with four primary suspension mounts 113, two secondary suspension mounts 114, one anti-snaking damper mount 115, two vertical damper mounts 116 and two end extension interfaces 117. The four primary suspension mounts 113 are symmetrically arranged along the central axis of the side beam 11 at the lower side of the side beam 11 near the two ends, and are used to install the primary suspension device. The two secondary suspension mounts 114 are arranged above the belly of the side beam 11, symmetrically arranged along the central axis, and are used to install the secondary suspension device. The anti-snaking damper mount 115 is arranged on the outer side of the side beam 11 and is located in the middle of the belly. The vertical damper mount 116 is arranged on the upper surface of the side beam 11 and is close to the two end positions of the side beam 11. The end extension interface 117 is arranged at the two ends of the side beam 11, and is used to install the external equipment required by the vehicle, such as sand spreading, obstacle removal, and snow removal equipment, to ensure the safe operation of the rail vehicle.

[0049] like Figure 1 , Figure 3 and Figure 5As shown, the secondary frame body 2 is located between the two side beams 11. Specifically, the secondary frame body 2 includes two longitudinal beams 21 and two reinforcing beams 22. The two longitudinal beams 21 and the two reinforcing beams 22 form a "mouth"-shaped structure. This can meet the requirements of large axle weight, high load and modularization.

[0050] The two longitudinal beams 21 are welded box-shaped structures and are arranged relatively parallel. The longitudinal beam 21 includes a first end 211, a middle part 212, and a second end 213, which are integrally formed. The first end 211 and the second end 213 have the same structure, and the two are smoothly connected by the middle part 212. The longitudinal sections of the first end 211 and the second end 213 are inclined upward and gradually reduced in the direction away from the middle part 212. Specifically, the upper surface and the lower surface of the first end 211 are not arranged in parallel, the upper surface and the lower surface of the second end 213 are not arranged in parallel, and the upper surface and the lower surface of the middle part 212 are arranged in parallel. The upper surface and the lower surface of the first end 211 and the second end 213 are connected by the upper surface and the lower surface of the middle part 212. The front side surface of the first end 211, the front side surface of the middle part 212, and the front side surface of the second end 213 are coplanar. The rear side surface of the first end 211, the rear side surface of the middle part 212, and the rear side surface of the second end 213 are coplanar. A similar arc-shaped recessed structure is formed between the upper surface of the first end 211, the upper surface of the middle part 212 and the upper surface of the second end 213. A first beam hole 2111 and a first connecting seat 2112 are provided on each first end 211. The two first beam holes 2111 are arranged opposite to each other. Specifically, the first beam hole 2111 is arranged at the belly of the first end 211. A second connecting seat (not shown) is closely arranged on the inner wall of the first beam hole 2111. The first beam 12 passes through the two first beam holes 2111 respectively and is fixedly connected to the longitudinal beam 21 at the second connecting seat. The first connecting seat 2112 is arranged at one end of the first end 211 away from the middle part 212. The two first connecting seats 2112 are arranged opposite to each other. The first connecting seat 2112 is arranged as an arc surface structure, and its shape curvature matches the surface curvature of the reinforcing beam 22 (the reinforcing beam 22 is a cylindrical structure), and is used to connect the reinforcing beam 22 with the longitudinal beam 21. Each second end 213 is provided with a second crossbeam hole 2131 and a fourth connection seat 2132. The second crossbeam hole 2131 is provided at the belly of the second end 213, and the two second crossbeam holes 2131 are arranged opposite to each other. A third connection seat (not shown) is closely arranged on the inner wall of the second crossbeam hole 2131. The second crossbeam 13 passes through the two second crossbeam holes 2131 respectively, and is fixed to the longitudinal beam 21 at the third connection seat. The fourth connection seat 2132 is provided at one end of the second end 213 away from the middle part 212. The two fourth connection seats 2132 are arranged opposite to each other. The fourth connection seat 2132 is provided as a curved surface structure, and its shape curvature matches the surface curvature of another reinforcing beam 22, and is used to connect the other reinforcing beam 22 with the longitudinal beam 21. Thus, the two reinforcing beams 22 are respectively arranged at the ends of the two longitudinal beams 21 in a direction perpendicular to the longitudinal beam 21. A transverse damper mounting seat 2121 is provided below each middle part 212. The two lateral vibration damper mounting seats 2121 are arranged diagonally and are used to connect the lateral vibration dampers.

[0051] like Figure 4 and Figure 5 As shown, the brake mounting seat 3 is configured as a double clamping plate structure, which includes two clamping plate bodies 31 and a connecting portion 32. The two clamping plate bodies 31 are relatively parallel and smoothly connected by the connecting portion 32. This configuration can meet the braking force requirements of large axle load rail vehicles.

[0052] Specifically, Figure 4 As shown, each clamping plate body 31 is provided with a first edge portion 311, a transition portion 312 and a second edge portion 313, and the three are integrally formed. The upper edge of the first edge portion 311 is in a straight line shape, and the lower edge is in an inwardly concave arc shape. A first positioning connection seat 3111 is provided at one end of the first edge portion 311 away from the transition portion 312, and the first positioning connection seat 3111 is set as a rib plate drilling structure for connecting with the brake device installed on the bogie. The upper edge and the lower edge of the transition portion 312 are both in a straight line shape. The upper edge and the lower edge of the second edge portion 313 are both in an arc shape. A first positioning portion 3131 is provided at one end of the second edge portion 313 away from the transition portion 312, which is a curved surface structure, matching the shape and size of the outer wall of the reinforcing beam 22, and is used to be fixedly connected with the reinforcing beam 22.

[0053] The connecting part 32 includes a connecting body 321, which is set as a plate-like structure. The two ends of the connecting body 321 are respectively vertically fixed to the two ends of the transition part 312, and the connection is smoothly transitioned. Two second positioning connecting seats 322 are vertically arranged below the connecting body 321, and the two second positioning connecting seats 322 are relatively parallel. Each second positioning connecting seat 322 is set as a rib plate drilling structure, which is used to connect with the brake device dedicated to the bogie.

[0054] Example 2

[0055] This embodiment provides a bogie, which includes the bogie frame described in Embodiment 1, on which devices required for vehicle driving, such as wheels, brakes, primary suspension devices, secondary suspension devices, shock absorbers, etc., are installed to form a bogie. By matching the parameters of each device, the vehicle can meet the requirements of high speed and high dynamics performance.

[0056] Example 3

[0057] This embodiment provides a rail vehicle, which includes a car body and a bogie as described in Embodiment 2. The car body is arranged on the bogie, and the bogie has load-bearing, guiding, running, vibration reduction, and braking functions for the entire vehicle. When the strength and dynamic performance of the bogie meet the requirements, the load-bearing capacity and running quality of the rail vehicle are improved accordingly.

[0058] The present invention is not limited to the above-mentioned embodiments. Without departing from the essential content of the present invention, any deformation, improvement and substitution that can be conceived by those skilled in the art shall fall within the scope of the present invention.

Claims

1. A bogie frame, characterized in that: It includes a main frame body, a secondary frame body and a brake mounting seat; the main frame body, the secondary frame body and the brake mounting seat form a "A"-shaped frame structure; The main frame body includes two side beams, a first cross beam and a second cross beam; each side beam is provided with a first mounting hole and a second mounting hole; the two first mounting holes are arranged opposite to each other, and the two second mounting holes are arranged opposite to each other; the two ends of the first cross beam are respectively passed through the two first mounting holes, thereby being fixedly connected to the two side beams; the two ends of the second cross beam are respectively passed through the two second mounting holes, thereby being fixedly connected to the two side beams; The secondary frame body is located between the two side beams; the secondary frame body includes two longitudinal beams and two reinforcing beams; the two reinforcing beams are arranged at the ends of the longitudinal beams in a direction perpendicular to the longitudinal beams; the two longitudinal beams and the two reinforcing beams form a "mouth"-shaped structure; the first cross beam and the second cross beam are arranged to penetrate the two longitudinal beams; The brake mounting seat is configured as a double-clamping plate structure and is fixedly connected to the reinforcing beam; the length direction of the clamping plate is consistent with the length direction of the side beam.

2. The bogie frame according to claim 1, characterized in that: It also includes a primary suspension mount, a secondary suspension mount, an anti-snaking shock absorber mount, and a vertical shock absorber mount; The primary suspension mounting seat is fixedly connected to the bottom of the side beam and is used for installing the primary suspension device; the secondary suspension mounting seat is arranged above the belly of the side beam and is used for installing the secondary suspension device; the anti-snaking shock absorber mounting seat is arranged on the outer side of the side beam; the vertical shock absorber mounting seat is arranged on the upper surface of the side beam.

3. The bogie frame according to claim 2, characterized in that: It also includes an end extension interface, which is arranged at the two ends of the side beam and is used to install external equipment required by the vehicle.

4. The bogie frame according to claim 1, characterized in that: Each of the longitudinal beams includes a first end portion, a middle portion, and a second end portion which are connected in sequence; the first end portion and the second end portion are smoothly connected through the middle portion; and the longitudinal sections of the first end portion and the second end portion are respectively inclined upward and gradually reduced in a direction away from the middle portion.

5. The bogie frame according to claim 4, characterized in that: The first crossbeam is arranged through the two first end portions; the second crossbeam is arranged through the two second end portions; One of the reinforcing beams is disposed at one end of the first end away from the middle portion along a direction perpendicular to the first end, and the other reinforcing beam is disposed at one end of the second end away from the middle portion along a direction perpendicular to the second end; The lateral vibration damper mounting seat is arranged below the middle portion and is used for connecting the lateral vibration damper.

6. The bogie frame according to claim 1, characterized in that: The brake mounting seat comprises two clamping plate bodies and a connecting portion; the two clamping plate bodies are arranged relatively parallel and are respectively vertically connected to the connecting portion, and the connecting portion has a smooth transition.

7. The bogie frame according to claim 6, characterized in that: It also includes a first positioning connection seat, which is arranged at one end of the clamping plate body and is used to connect with a brake device installed on the bogie; A first positioning portion is provided on the other end of each clamping plate body for being fixedly connected with the reinforcing beam.

8. The bogie frame according to claim 6, characterized in that: The connecting portion is provided with a plurality of second positioning connection seats, which are parallel to each other; each of the second positioning connection seats is configured to be connected to a braking device installed on the bogie.

9. A bogie, characterized in that: Comprising a bogie frame as claimed in any one of claims 1 to 8.

10. A rail vehicle, characterized in that: Comprising a bogie as claimed in claim 9.

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