A concave bottom flat car and its body

Abstract

The present invention provides a concave-bottom flat car and its car body, which relates to the technical field of railway vehicles. The car body includes a floor, an upper cover plate with an angle, a bottom frame web and an inserted angle structure. The inserted angle structure includes an angle bottom plate and an angle vertical plate. One end of the angle vertical plate is fixedly connected to the angle bottom plate, and the other end is fixedly connected to the upper cover plate with an angle. The angle vertical plate divides the angle bottom plate into a front side of the bottom plate and a rear side of the bottom plate. The end of the front side of the bottom plate that is opposite to the rear side of the bottom plate is fixedly connected to the floor. A plurality of slots are arranged on the rear side of the bottom plate. The bottom frame web is suitable for being inserted into the slots and fixedly connected to the floor, the front side of the bottom plate and the angle vertical plate. The car body of the concave-bottom flat car provided by the present invention, on the one hand, eliminates the problem of residual stress that is easy to generate in the prior art, and on the other hand, reduces welding gaps and simplifies the process.

Description

Technical Field

[0001] The present invention relates to the technical field of railway vehicles, and in particular to a concave-bottom flat car and a car body thereof. Background Art

[0002] With the development of railway equipment technology, the 120-180 ton concave flat car is not able to meet the development needs of high-speed and heavy-load railways due to its early development. The corner of the concave frame of the concave flat car is a stress concentration area with a sudden change in cross section, and the welds in this area are crossed, which is prone to welding residual stress and defects such as cracks during production and use. Summary of the invention

[0003] The problem solved by the present invention is that defects such as cracks are prone to occur at the corners of the concave chassis.

[0004] In order to solve the above problems, the present invention provides a body of a concave-bottom flat car, including a concave bottom frame, the concave bottom frame includes a floor, a bent-angle upper cover plate, a bottom frame belly plate and an inserted folded-angle structure, the inserted folded-angle structure includes a folded-angle bottom plate and a folded-angle vertical plate, one end of the folded-angle vertical plate is fixedly connected to the folded-angle bottom plate, and the other end is fixedly connected to the bent-angle upper cover plate, the folded-angle vertical plate divides the folded-angle bottom plate into a front side of the bottom plate and a rear side of the bottom plate, the end of the front side of the bottom plate that is opposite to the rear side of the bottom plate is fixedly connected to the floor, and the bottom frame belly plate is suitable for being inserted into a slot and fixedly connected to the floor, the front side of the bottom plate and the folded-angle vertical plate.

[0005] The body of the concave-bottom flat car provided by the present invention comprises a concave bottom frame including a floor, an angled upper cover plate, a bottom frame belly plate and an inserted angled structure, wherein the two ends of the floor are respectively connected to the angled upper cover plate by the inserted angled structure, and the inserted angled structure comprises an angled bottom plate and an angled vertical plate, one end of the angled vertical plate is fixedly connected to the angled bottom plate, and the other end is fixedly connected to the angled upper cover plate, the angled vertical plate divides the angled bottom plate into a front side of the bottom plate and a rear side of the bottom plate, the end of the front side of the bottom plate which is opposite to the rear side of the bottom plate is fixedly connected to the floor, the angle between the angled vertical plate and the front side of the bottom plate is an obtuse angle, a plurality of slots are arranged on the rear side of the bottom plate, the bottom frame belly plate is suitable for being inserted into the slots and fixedly connected to the floor, the front side of the bottom plate and the angled vertical plate, thereby, on the one hand, eliminating the problem of residual stress that is easily generated in the prior art, and on the other hand, reducing the welding gap and simplifying the process.

[0006] Furthermore, a protruding step is provided at the distal end of the front side of the bottom plate.

[0007] Furthermore, the recessed bottom frame further comprises a bent-angle lower cover plate, and an end of the bottom plate rear side which is away from the bottom plate front side is fixedly connected to the bent-angle lower cover plate.

[0008] Furthermore, the recessed chassis further comprises a recessed vehicle bottom plate, and one end of the chassis web away from the floor is fixedly connected to the recessed vehicle bottom plate.

[0009] Furthermore, the concave bottom frame also includes a reinforcing plate, and two ends of the reinforcing plate are respectively fixedly connected to the angle bottom plate and the concave vehicle bottom plate.

[0010] Furthermore, it also includes a small chassis connected to the concave chassis and a weighing mechanism arranged between the concave chassis and the small chassis, and the weighing mechanism is suitable for sensing the pressure in the gravity direction transmitted from the concave chassis to the small chassis.

[0011] Furthermore, a first upper center plate is arranged on the concave base frame, a first lower center plate is arranged on the small base frame, the first upper center plate is suitable for cooperating with the first lower center plate to connect the concave base frame with the small base frame, and a weighing mechanism is arranged between the first lower center plate and the first upper center plate.

[0012] Furthermore, it also includes a small chassis and a bogie, the small chassis is provided with a second upper center plate in a hollow shape, the bogie is provided with a second lower center plate, the concave chassis is connected to the small chassis, the second upper center plate is suitable for cooperating with the second lower center plate to connect the small chassis and the bogie, and the small chassis is also provided with a center plate stopper, the center plate stopper is provided in the second upper center plate, and the center plate stopper is suitable for abutting against the second upper center plate.

[0013] Furthermore, the second upper core plate is hemispherical, the core plate stopper is disc-shaped, and the core plate stopper is gap-matched with the second upper core plate.

[0014] The present invention also provides a concave-bottom flat car, comprising a car head and a car body, wherein the car body is the car body provided by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the body of a concave-bottom flat car in a preferred embodiment of the present invention.

[0016] Figure 2 for Figure 1 Structural diagram of the inserted angle structure.

[0017] Figure 3 for Figure 1 Installation diagram of the inserted angle structure.

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of small and medium chassis.

[0019] Figure 5 for Figure 4 A cross-sectional schematic diagram of the cooperation between the second upper center plate and the center plate stopper.

[0020] Figure 6 for Figure 5 Top view of the center disk stop.

[0021] Figure 7 for Figure 6 Section view along line AA.

[0022] Figure 8 It is a schematic diagram of the air brake device according to an embodiment of the present invention.

[0023] Fig. 9 It is a schematic diagram of the coordination of the brake cylinder, the first brake lever and the brake regulator according to an embodiment of the present invention.

[0024] Fig.10 It is a schematic diagram of the basic braking device described in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the description of the present invention, it should be noted that the terminology nouns in the various embodiments, such as words indicating directions such as "upper", "lower", "front", and "back", are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the referred elements and devices must be operated according to the specific directions and defined operations and methods and structures in the specification. Such directional nouns do not constitute limitations to the present invention.

[0027] In addition, the terms "first" and "second" mentioned in the embodiments of the present invention are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0028] In the drawings of the specification, X positive direction represents “front”, X negative direction represents “back”, Y positive direction represents “right”, and Y positive direction represents “left”.

[0029] An embodiment of the present invention provides a body of a concave-bottom flat car, including a concave bottom frame 1, wherein the concave bottom frame 1 includes a floor 10, a bent-angle upper cover plate 11, a bottom frame belly plate 12 and an inserted folded-angle structure 13, wherein the inserted folded-angle structure 13 includes a folded-angle bottom plate 14 and a folded-angle vertical plate 15, wherein one end of the folded-angle vertical plate 15 is fixedly connected to the folded-angle bottom plate 14, and the other end is fixedly connected to the bent-angle upper cover plate 11, and the folded-angle vertical plate 15 divides the folded-angle bottom plate 14 into a bottom plate front side 14a and a bottom plate rear side 14b, and the end of the bottom plate front side 14a that is opposite to the bottom plate rear side 14b is fixedly connected to the floor 10, and a plurality of slots 14c are provided on the bottom plate rear side 14b, and the bottom frame belly plate 12 is suitable for being inserted into the slots 14c and being fixedly connected to the floor 10, the bottom plate front side 14a and the folded-angle vertical plate 15.

[0030] In the related art, there are two forms of the angled structure of the concave chassis, which are connected with the angled upper cover plate, the angled lower cover plate, the floor and the chassis web of the concave chassis:

[0031] The first type is a multi-layer board with holes inserted into the corner structure: the floor and the corner cover are both set as multi-layer board structures, holes are opened between the multi-layer boards, and the corner structure is inserted into the floor and the corner cover respectively. The problem with this technical solution is that the multi-layer boards are not easy to combine and residual stress is easily generated.

[0032] The second type is T-shaped structure: The T-shaped structure is T-shaped, and the three ends of the T-shaped structure are welded to the upper cover plate, floor and lower cover plate, and the lower side of the T-shaped structure is welded to the bottom frame web. Although the T-shaped structure solves the problem of residual stress, it has more connecting welds and more complicated processes.

[0033] Please combine Figure 1 In this embodiment, the body of the concave-bottom flat car can specifically include a concave bottom frame 1, a small bottom frame 3 and a bogie 5. The concave bottom frame 1 is in a concave shape, and both ends of the concave bottom frame 1 protrude upward. The two ends of the concave bottom frame 1 are respectively connected to a small bottom frame 3, each small bottom frame 3 is connected to two bogies 5, and each bogie 5 includes three pairs of wheels 53.

[0034] In this embodiment, the concave chassis 1 includes a floor 10, an upper cover plate 11, a chassis web 12 and an inserted angled structure 13. The two ends of the floor 10 are respectively connected to the upper cover plate 11 through the inserted angled structure 13. Figure 2 The inserted angled structure 13 includes an angled bottom plate 14 and an angled vertical plate 15. One end of the angled vertical plate 15 is fixedly connected to the angled bottom plate 14, and the other end is fixedly connected to the angled upper cover plate 11. The angled vertical plate 15 divides the angled bottom plate 14 into a bottom plate front side 14a and a bottom plate rear side 14b. Figure 3 The end of the bottom plate front side 14a that is opposite to the bottom plate rear side 14b is fixedly connected to the floor 10, the angle between the angled vertical plate 15 and the bottom plate front side 14a is an obtuse angle, and a plurality of slots 14c are provided on the bottom plate rear side 14b. The bottom frame web 12 is suitable for being inserted into the slots 14c and fixedly connected to the floor 10, the bottom plate front side 14a and the angled vertical plate 15, thereby eliminating the problem of residual stress that is easily generated in the prior art on the one hand, and reducing the welding gap and simplifying the process on the other hand.

[0035] In an optional embodiment of the present invention, chamfers 14d are provided along two sides of the slot 14c.

[0036] In this embodiment, chamfers 14d are provided along both sides of the slot 14c to facilitate the insertion of the chassis web 12 into the slot 14c.

[0037] In an optional embodiment of the present invention, a protruding step 14f is provided at the distal end of the front side 14a of the bottom plate.

[0038] It can be understood that the distal end of the bottom plate front side 14a refers to an end of the bottom plate front side 14a away from the bottom plate rear side 14b.

[0039] In this embodiment, the front side 14a of the base plate is stepped, and a protruding step 14f is provided at the far end of the front side 14a of the base plate. Therefore, the gap connecting the angled base plate 14 and the floor 10 is not on the same plane, thereby enhancing the stability of the connection between the angled base plate 14 and the floor 10.

[0040] In this embodiment, the angled bottom plate 14 and the floor 10 can be connected together by welding, and the front side 14a of the bottom plate is stepped, and the end where the front side 14a of the bottom plate is connected to the rear side 14b of the bottom plate is longer than the end where the front side 14a of the bottom plate and the rear side 14b of the bottom plate are separated from each other. Therefore, the weld connecting the angled bottom plate 14 and the floor 10 is not on the same plane, thereby enhancing the stability of the connection between the angled bottom plate 14 and the floor 10.

[0041] In an optional embodiment of the present invention, the recessed bottom frame 1 further comprises a bent angle lower cover plate 16 , and an end of the bottom plate rear side 14 b which is away from the bottom plate front side 14 a is fixedly connected to the bent angle lower cover plate 16 .

[0042] In this embodiment, the end of the bottom plate rear side 14 b which is away from the bottom plate front side 14 a is fixedly connected to the curved lower cover plate 16 , thereby increasing the stability of the entire recessed bottom frame 1 .

[0043] In an optional embodiment of the present invention, the recessed chassis 1 further comprises a recessed vehicle floor 17 , and one end of the chassis web 12 which is away from the floor 10 is fixedly connected to the recessed vehicle floor 17 .

[0044] In this embodiment, the end of the chassis web 12 away from the floor 10 is fixedly connected to the concave vehicle bottom plate 17 , thereby increasing the stability of the entire concave chassis 1 .

[0045] In an optional embodiment of the present invention, the recessed chassis 1 further comprises a reinforcing plate 18 , and two ends of the reinforcing plate 18 are fixedly connected to the angled bottom plate 14 and the recessed vehicle bottom plate 17 , respectively.

[0046] In this embodiment, by providing a reinforcing plate 18 , both ends of the reinforcing plate 18 are respectively fixedly connected to the angled bottom plate 14 and the recessed vehicle bottom plate 17 , so that the inserted angled structure 13 is more firmly connected to the recessed vehicle bottom frame 1 .

[0047] Please combine again Figure 1In an optional embodiment of the present invention, it also includes a small base frame 3 connected to the recessed base frame 1 and a weighing mechanism 71 arranged between the recessed base frame 1 and the small base frame 3, and the weighing mechanism 71 is suitable for sensing the pressure transmitted from the recessed base frame 1 to the small base frame 3 in the direction of gravity.

[0048] In this embodiment, by arranging a weighing mechanism 71 between the recessed chassis 1 and the small chassis 3 , the goods on the recessed chassis 1 can be weighed.

[0049] In an optional embodiment of the present invention, a first upper center plate is provided on the concave base frame 1, and a first lower center plate 31 is provided on the small base frame 3, the first upper center plate is suitable for cooperating with the first lower center plate 31 to connect the concave base frame 1 with the small base frame 3, and the weighing mechanism 71 is provided between the first lower center plate 31 and the first upper center plate.

[0050] In this embodiment, a first upper center plate is provided on the concave base frame 1, and a first lower center plate 31 is provided on the small base frame 3. The first upper center plate cooperates with the first lower center plate 31, so that the concave base frame 1 is connected to the small base frame 3, and the small base frame 3 bears the gravity of the concave base frame 1 and the goods placed on the concave base frame 1.

[0051] In the related art, the load-bearing mechanism of the body of the concave-bottom flat car is arranged at the axle box and the load-bearing saddle, with many output interfaces and large accumulated errors.

[0052] In this embodiment, the weighing mechanism 71 is arranged between the first lower center plate 31 and the first upper center plate. The weighing mechanism 71 can sense the pressure in the gravity direction transmitted from the first upper center plate to the first lower center plate 31, thereby measuring the mass of the goods placed on the concave bottom frame 1. Furthermore, due to fewer output interfaces, the error is smaller.

[0053] Please combine Figure 4-7 In an optional embodiment of the present invention, it also includes a small chassis 3 and a bogie 5, the small chassis 3 is provided with a second upper center plate 33 in a hollow shape, the bogie 5 is provided with a second lower center plate, the concave chassis 1 is connected to the small chassis 3, the second upper center plate 33 is suitable for cooperating with the second lower center plate to connect the small chassis 3 with the bogie 5, and the small chassis 3 is also provided with a center plate stopper 35, the center plate stopper 35 is arranged in the second upper center plate 33, and the center plate stopper 35 is suitable for abutting against the second upper center plate 33.

[0054] In the related art, the upper center plate arranged on the small chassis is connected to the main structure of the bogie by bolts. When the small chassis is subjected to a force perpendicular to the direction of gravity, the small chassis moves relative to the bogie in a direction perpendicular to the direction of gravity, and the lower center plate arranged on the bogie applies a force perpendicular to the direction of gravity to the upper center plate, which may cause the bolts to be sheared.

[0055] In this embodiment, a core plate stopper 35 is also provided on the small base frame 3, and the core plate stopper 35 is arranged in the second upper core plate 33. Therefore, when the second lower core plate applies a force perpendicular to the direction of gravity to the second upper core plate 33, the core plate stopper 35 abuts against the second upper core plate 33 to share the shear force on the bolts and prevent the bolts from being sheared off.

[0056] In an optional embodiment of the present invention, the second upper core plate 33 is hemispherical, the core plate stopper 35 is disc-shaped, and the core plate stopper 35 is loosely matched with the second upper core plate 33 .

[0057] In this embodiment, the center plate stopper 35 is in the shape of a disk, and the center plate stopper 35 and the second upper center plate 33 are clearance-matched, so that the center plate stopper 35 can share a force in a direction perpendicular to the direction of gravity.

[0058] In an optional embodiment of the present invention, the vehicle body also includes an air brake device, including a brake regulator 95, a rod end joint bearing 96 and a connecting rod 97, the two ends of the rod end joint bearing 96 are respectively connected to one end of the brake regulator 95 and one end of the connecting rod 97, and the rod end joint bearing 96 is suitable for swinging at a first angle to make the angle between the brake regulator 95 and the connecting rod 97 adjustable.

[0059] Specifically, in this embodiment, Figure 8As shown, the air brake device is a device used to slow down or stop the train to ensure driving safety, including an air storage cylinder 91, an air control valve 92, a brake cylinder 93, a first brake lever 94, a brake regulator 95, a rod end joint bearing 96, a connecting rod 97 and a second brake lever 98 connected in sequence, wherein the air storage cylinder 91 provides air power for the air brake device, generally including an air compressor and a main air cylinder, by operating the air control valve 92, the compressed air in the main air cylinder enters the brake cylinder 93 through the brake pipeline between the air storage cylinder 91 and the brake cylinder 93 to achieve braking, or the compressed air in the brake cylinder 93 is discharged to achieve relief, when compressed air is introduced into the brake cylinder 93 for braking, the brake regulator 95, the rod end joint bearing 96, the connecting rod 97 connected in sequence are driven by the first brake lever 94. 7 and the second brake lever 98 are braked, thereby achieving braking of the corresponding basic brake device, the two ends of the rod end joint bearing 96 are respectively connected to one end of the brake regulator 95 and one end of the connecting rod 97, and the rod end joint bearing 96 is suitable for swinging at a first angle to make the angle between the brake regulator 95 and the connecting rod 97 adjustable; usually, the air brake device is located on the small chassis of the vehicle, and the basic brake device is located on the bogie. When the vehicle passes through a curved section, a certain angle is formed between the small chassis and the bogie. Since the rod end joint bearing 96 is suitable for swinging at the first angle, the brake regulator 95 and the connecting rod 97 can swing within a certain range, which is beneficial to the transmission of braking force when the vehicle turns, and at the same time effectively avoids interference between the components of the air brake device and the basic brake device, thereby improving the stability of the air brake device and the vehicle.

[0060] Among them, the rod end joint bearing 96 is mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface, and is used for low-speed swinging motion. The swinging of the rod end joint bearing 96 at a first angle is reflected in the fact that the axis of the inner ring and the axis of the outer ring are offset and no longer coincident. The angle between the two axes is the first swinging angle of the rod end joint bearing 96.

[0061] In this embodiment, by setting the rod end joint bearing to be suitable for swinging at the first angle, it is beneficial to the transmission of braking force when the vehicle turns, and at the same time effectively avoids interference between the components of the air brake device and the basic brake device, thereby improving the stability of the air brake device and the vehicle.

[0062] Optionally, the air brake device also includes a first brake lever 94 connected to the other end of the brake regulator 95, and a brake cylinder 93 connected to the first brake lever 94, the first brake lever 94 includes a brake end 941, a brake adjusting part 942 and a fixed end 943 connected in sequence, the brake end 941 is suitable for being connected to the brake cylinder 93, the brake cylinder 93 is suitable for driving the brake end 941 to reciprocate, the brake adjusting part 942 is connected to the brake regulator 95 and is suitable for driving the brake regulator 95 to reciprocate, and the fixed end 943 is suitable for being in a fixed state when the brake end 941 and the brake adjusting part 942 reciprocate.

[0063] Specifically, in this embodiment, combined with Figure 8 and Fig. 9 As shown, the first brake lever 94 includes a brake end 941, a brake adjustment part 942 and a fixed end 943 which are fixedly connected in sequence, wherein when the brake cylinder 93 drives the first brake lever 94 to reciprocate, the fixed end 943 is always in a fixed state, and the brake end 941 is driven by the piston in the brake cylinder 93 to reciprocate, and when the brake end 941 is driven by the brake cylinder 93 to brake, it simultaneously drives the brake adjustment part 942 to brake, and the brake adjustment part 942 is connected to the brake adjuster 95 and can drive the brake adjuster 95 to reciprocate, thereby sequentially braking the brake adjuster 95, the rod end joint bearing 96, the connecting rod 97 and the second brake lever 98, thereby braking the corresponding basic brake device. As a lever, the first brake lever 94 can effectively expand the braking ratio, which is beneficial to the transmission of the braking force when the vehicle turns, and improves the braking performance of the air brake device and the vehicle.

[0064] In this embodiment, by providing a first brake lever for braking, the braking ratio is effectively expanded, which is beneficial to the transmission of braking force when the vehicle turns, and improves the braking performance of the air brake device and the vehicle.

[0065] Optionally, the first angle has a value range of -3° to 3°.

[0066] Specifically, in the present embodiment, the rod end joint bearing 96 is suitable for swinging at a first angle, and the value range of the first angle is -3° to 3°. Generally speaking, when the vehicle is driving, the turning angle will not be too large. Therefore, in the present embodiment, the swing angle of the rod end joint bearing 96 is set to be in the range of -3° to 3°. On the one hand, it is beneficial to the transmission of braking force when the vehicle turns, and at the same time, it effectively avoids interference between the components of the air brake device and the basic brake device, thereby improving the stability of the air brake device and the vehicle. On the other hand, it also ensures the stability of the rod end joint bearing 96 itself.

[0067] In this embodiment, by setting the swing angle of the rod end joint bearing within the range of -3° to 3°, on the one hand, it is beneficial to the transmission of braking force when the vehicle turns, and at the same time effectively avoids interference between the components of the air brake device and the basic brake device, thereby improving the stability of the air brake device and the vehicle. On the other hand, it also ensures the stability of the rod end joint bearing itself.

[0068] Optionally, the air brake device further comprises an air brake valve 92 connected to the brake cylinder 93 , there are multiple brake cylinders 93 , and the air control valve 92 is suitable for driving the multiple brake cylinders 93 to brake.

[0069] Specifically, in this embodiment, the air brake device also includes an air brake valve 92 connected to a brake cylinder 93. There are multiple brake cylinders 93, and the air control valve 92 is suitable for driving multiple brake cylinders 93 for braking. For example, there are two brake cylinders 93, and one air control valve 92 drives two brake cylinders 93 for braking. At the same time, one brake cylinder 93 corresponds to one basic brake device, and one basic brake device corresponds to the braking of multiple wheels. Therefore, the braking of multiple wheels can be achieved through only one air control valve 92, which effectively improves the braking efficiency and the braking performance of the air brake device and the vehicle.

[0070] In this embodiment, by providing an air brake valve to drive multiple brake cylinders to brake, multiple wheels can be braked, which effectively improves the braking efficiency and the braking performance of the air brake device and the vehicle.

[0071] In another embodiment of the present invention, the vehicle body further includes a braking system, including the air brake device in the embodiment of the present invention, and also includes a basic brake device connected to the air brake device, and the air brake device is used to drive the basic brake device to brake.

[0072] Specifically, in this embodiment, combined with Figures 8 to 10 The braking system includes the above-mentioned air brake device and a basic brake device connected to the air brake device. The basic brake device brakes the corresponding wheel 53 driven by the air brake device. Since the rod end joint bearing 96 is suitable for swinging at a first angle, the connecting rod 97 can swing within a certain range, which is beneficial to the transmission of braking force when the vehicle turns. At the same time, it effectively avoids interference between the components of the air brake device and the basic brake device, thereby improving the stability of the air brake device and the vehicle.

[0073] In this embodiment, the air brake device with a swinging rod end joint bearing drives the basic brake device to brake the wheel, which is beneficial to the transmission of braking force when the vehicle turns, and at the same time effectively avoids interference between the components of the air brake device and the basic brake device, thereby improving the stability of the air brake device and the vehicle.

[0074] Optionally, the air brake device includes a second brake lever 98, which is connected to a connecting rod 97 of the air brake device; the basic brake device includes an upper pull rod 99, a third brake lever 910, a first brake beam 912 and a first brake shoe 913 connected in sequence; the upper pull rod 99 is connected to the second brake lever 98 and is suitable for reciprocating motion driven by the second brake lever 98; the first brake shoe 913 is located at both ends of the first brake beam 912 and is suitable for locking the wheel 53.

[0075] Specifically, in this embodiment, the air brake device includes a second brake lever 98, combined with Fig.10 The basic braking device includes an upper pull rod 99, a third brake lever 910, a first brake beam 912 and a first brake shoe 913 connected in sequence, wherein the upper pull rod 99 is connected to the second brake lever 98 of the air brake device and is suitable for reciprocating motion driven by the second brake lever 98. When the upper pull rod 99 brakes, it drives the third brake lever 910, the first brake beam 912 and the first brake shoe 913 in sequence to brake the corresponding wheel 53. The specific method is that the brake shoe 913 presses the tread of the wheel 53 to generate braking force, wherein the brake shoe contacts the tread of the wheel to generate friction, converts the kinetic energy of the train into heat energy and dissipates it into the atmosphere, so as to achieve the purpose of slowing down or stopping the train. Generally speaking, the brake shoe can be divided into two categories according to the material: cast iron brake shoe and synthetic brake shoe; as a lever, the third brake lever 910 can effectively expand the braking ratio, which is beneficial to the transmission of braking force when the vehicle turns, and improves the braking performance of the air brake device and the vehicle.

[0076] In this embodiment, by providing an upper pull rod, a third brake lever, a first brake beam and a first brake shoe which are connected in sequence, the wheel is locked by the first brake shoe under the drive of the second brake lever, thereby effectively expanding the braking ratio, facilitating the transmission of braking force when the vehicle turns, and improving the braking performance of the air brake device and the vehicle.

[0077] Optionally, the basic braking device also includes a first brake rod 911, a fourth brake lever 914, a second brake beam 916 and a second brake shoe 917 connected in sequence, and the first brake rod 911 is connected to the third brake lever 910 and is suitable for reciprocating motion driven by the third brake lever 910.

[0078] Specifically, in this embodiment, combined with Fig.10The basic braking device also includes a first brake rod 911, a fourth brake lever 914, a second brake beam 916 and a second brake shoe 917 connected in sequence, wherein the first brake rod 911 is connected to the third brake lever 910 and is suitable for reciprocating motion driven by the third brake lever 910. When the third brake lever 910 brakes, it drives the first brake rod 911, the fourth brake lever 914, the second brake beam 916 and the second brake shoe 917 in sequence to brake the corresponding wheel 53; as a lever, the fourth brake lever 914 can effectively expand the braking ratio, which is beneficial to the transmission of braking force when the vehicle turns, and improves the braking performance of the air brake device and the vehicle.

[0079] In this embodiment, by providing a first brake rod, a fourth brake lever, a second brake beam and a second brake shoe which are connected in sequence, the wheel is locked by the second brake shoe under the drive of the third brake lever, thereby effectively expanding the braking ratio, facilitating the transmission of braking force when the vehicle turns, and improving the braking performance of the air brake device and the vehicle.

[0080] Optionally, the basic braking device also includes a second brake rod 915, a fifth brake lever 918, a third brake rod 919, a sixth brake lever 920, a third brake beam 921 and a third brake shoe 922 connected in sequence, and the second brake rod 915 is connected to the fourth brake lever 914 and is suitable for reciprocating motion driven by the fourth brake lever 914.

[0081] Specifically, in the present embodiment, the basic braking device further comprises a second brake rod 915, a fifth brake lever 918, a third brake rod 919, a sixth brake lever 920, a third brake beam 921 and a third brake shoe 922 which are connected in sequence, wherein the second brake rod 915 is connected to the fourth brake lever 914 and is adapted to reciprocate under the drive of the fourth brake lever 914, and when the fourth brake lever 914 brakes, it drives the second brake rod 915, the fifth brake lever 918, the third brake rod 919, the sixth brake lever 920, the third brake beam 921 and the third brake shoe 922 in sequence to brake the corresponding wheel 53; as levers, the fifth brake lever 918 and the sixth brake lever 920 can effectively expand the braking ratio, which is beneficial to the transmission of braking force when the vehicle turns, thereby improving the braking performance of the air brake device and the vehicle.

[0082] In this embodiment, by providing a second brake rod, a fifth brake lever, a third brake rod, a sixth brake lever, a third brake beam and a third brake shoe which are connected in sequence, the wheel is locked by the third brake shoe under the drive of the fourth brake lever, thereby effectively expanding the braking ratio, facilitating the transmission of braking force when the vehicle turns, and improving the braking performance of the air brake device and the vehicle.

[0083] Optionally, the basic braking device further includes a fixed bracket 923 connected to the sixth brake lever 920, and the fixed bracket 923 is suitable for being connected to a bogie.

[0084] Specifically, in this embodiment, the basic braking device also includes a fixed bracket 923 connected to the sixth brake lever 920, and the fixed bracket 923 is suitable for being connected to the bogie, thereby improving the stability of the reciprocating motion of the sixth brake lever 920 during braking and canceling the brake, and improving the stability of the basic braking device and the vehicle.

[0085] In this embodiment, the reciprocating motion of the sixth brake lever is stabilized by providing a fixed bracket connected to the bogie, thereby improving the stability of the reciprocating motion of the sixth brake lever during braking and canceling the brake, and improving the stability of the basic braking device and the vehicle.

[0086] The above embodiment of the present invention further provides a concave bottom flat car, comprising a car head and a car body, wherein the car body is the car body provided in the embodiment of the present invention.

[0087] The beneficial effects of the concave-bottom flat car provided by the embodiment of the present invention are the same as the beneficial effects of the body of the concave-bottom flat car provided by the embodiment of the present invention, and are not described in detail herein.

[0088] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A body of a concave-bottom flat car, comprising a concave bottom frame (1), wherein the concave bottom frame (1) comprises a floor (10), an angled upper cover plate (11) and a bottom frame web (12), characterized in that: The invention also comprises an inserted angled structure (13), wherein the inserted angled structure (13) comprises an angled bottom plate (14) and an angled vertical plate (15), wherein one end of the angled vertical plate (15) is fixedly connected to the angled bottom plate (14), and the other end is fixedly connected to the angled upper cover plate (11), and the angled vertical plate (15) divides the angled bottom plate (14) into a bottom plate front side (14a) and a bottom plate rear side (14b), wherein the bottom plate front side (14a) and the bottom plate rear side (14b) are connected to each other. b) one end facing away from the other end is fixedly connected to the floor (10), a plurality of slots (14c) are arranged on the rear side (14b) of the base plate, the base frame web (12) is suitable for being inserted into the slots (14c) and is fixedly connected to the floor (10), the front side (14a) of the base plate and the angled vertical plate (15); chamfers (14d) are arranged along both sides of the slots (14c); and a protruding step (14f) is arranged at the far end of the front side (14a) of the base plate.

2. The body of the concave-bottom flat car according to claim 1, characterized in that: The recessed bottom frame (1) further comprises a bent-angle lower cover plate (16), and an end of the bottom plate rear side (14b) which is away from the bottom plate front side (14a) is fixedly connected to the bent-angle lower cover plate (16).

3. The body of the concave-bottom flat car according to claim 1, characterized in that: The recessed chassis (1) further comprises a recessed vehicle floor (17), and the end of the chassis web (12) which is away from the floor (10) is fixedly connected to the recessed vehicle floor (17).

4. The body of the concave-bottom flat car according to claim 3, characterized in that: The recessed chassis (1) further comprises a reinforcing plate (18), the two ends of which are respectively fixedly connected to the angled bottom plate (14) and the recessed vehicle bottom plate (17).

5. The body of the concave-bottom flat car according to any one of claims 1 to 4, characterized in that: It also comprises a small base frame (3) connected to the concave base frame (1) and a weighing mechanism (71) arranged between the concave base frame (1) and the small base frame (3), wherein the weighing mechanism (71) is suitable for sensing the pressure transmitted from the concave base frame (1) to the small base frame (3) in the direction of gravity.

6. The body of the concave-bottom flat car according to claim 5, characterized in that: The concave base frame (1) is provided with a first upper center plate, and the small base frame (3) is provided with a first lower center plate (31). The first upper center plate is suitable for cooperating with the first lower center plate (31) to connect the concave base frame (1) with the small base frame (3). The weighing mechanism (71) is arranged between the first lower center plate (31) and the first upper center plate.

7. The body of the concave-bottom flat car according to any one of claims 1 to 4, characterized in that: The invention also comprises a small chassis (3) and a bogie (5), wherein the small chassis (3) is provided with a second upper center plate (33) in a hollow shape, and the bogie (5) is provided with a second lower center plate, the concave chassis (1) is connected to the small chassis (3), the second upper center plate (33) is suitable for cooperating with the second lower center plate to connect the small chassis (3) with the bogie (5), and the small chassis (3) is also provided with a center plate stopper (35), the center plate stopper (35) is arranged in the second upper center plate (33), and the center plate stopper (35) is suitable for abutting against the second upper center plate (33).

8. The body of the concave-bottom flat car according to claim 7, characterized in that: The second upper center plate (33) is hemispherical, the center plate stopper (35) is disc-shaped, and the center plate stopper (35) is clearance-matched with the second upper center plate (33).

9. A concave bottom flat car, comprising a car head and a car body, characterized in that: The vehicle body is the vehicle body according to any one of claims 1 to 8.

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