Lower cover plate assembly of railway wagon and railway wagon

Abstract

The utility model discloses a lower cover plate assembly of a rail wagon and the rail wagon. The lower cover plate assembly of the railway wagon is of a symmetrical structure and is provided with a symmetrical surface; comprising a middle part, a first extension part, a second extension part, a first side wing part and a second side wing part, the middle part is of a flat plate structure, and a connecting hole is formed in the center; the first extension part and the second extension part are respectively arranged at two ends of the middle part; the first extension part is of a bent structure; a bent elliptical hole is formed between the first extension part and the middle part; the second extension parts are two strip-shaped plates which are parallel to each other; the second extension part and the middle part are basically coplanar; the first side wing part and the second side wing part are symmetrically arranged on the two sides of the middle part respectively; in the using state, the upper surfaces of the first side wing part and the second side wing part are both higher than the upper surface of the middle part. The lower cover plate assembly of the railway wagon is suitable for lengthened railway wagons, and the self weight of the wagon can be reduced.

Description

Technical Field

[0001] This utility model relates to a lower cover plate assembly for a railway freight car and the railway freight car itself. Background Technology

[0002] my country's railways transport a wide variety of goods, and the corresponding railway freight cars have also developed in diverse forms. Container transport is a modern mode of transportation that uses containers as the transport unit, and it is characterized by "safety, efficiency, convenience, greenness, and economy".

[0003] Currently, the main container types used in railway freight are 20-foot and 40-foot general-purpose containers. Existing vehicles transporting 48-foot containers cannot directly load them onto the lower level of the vehicle; instead, one 40-foot container or two 20-foot containers must first be loaded onto the lower level. Furthermore, it is impossible to load 48-foot containers onto two levels simultaneously.

[0004] Therefore, existing vehicles need to be modified to accommodate extended double-stack container transport, and the lower cover plate is an important component in this process. Utility Model Content

[0005] One objective of this invention is to provide a lower cover plate assembly for railway freight cars, applicable to extended railway freight cars for extended double-stack container transport. Another objective of this invention is to provide a railway freight car.

[0006] The present invention achieves the above objectives by adopting the following technical solution.

[0007] On the one hand, this utility model provides a lower cover plate assembly for a railway freight car, which has a symmetrical structure and a symmetrical plane; in the use state, the extension direction of the symmetrical plane is the same as the length direction of the railway freight car; the lower cover plate assembly includes a middle part, a first extension part, a second extension part, a first side wing part, and a second side wing part.

[0008] The middle part has a flat plate structure, and a connection hole is provided in the center.

[0009] The first extension and the second extension are respectively disposed at both ends of the middle portion; the first extension has a bent structure, and the angle formed by the bend is an obtuse angle; a bent elliptical hole is formed between the first extension and the middle portion; in use, the upper surface of a portion of the first extension is substantially coplanar with the upper surface of the middle portion, and the upper surface of another portion is higher than the upper surface of the middle portion; the width of the end of the first extension away from the middle portion is greater than the width of the middle portion; the center plane of the length direction of the first extension and the middle portion is the plane of symmetry;

[0010] The second extension consists of two parallel strips, which are symmetrical about the plane of symmetry; the second extension and the middle section are substantially coplanar.

[0011] The first and second side wings are symmetrically arranged on both sides of the middle portion; the first and second side wings share a common central plane along their length, which is perpendicular to the plane of symmetry; the first and second side wings are curved structures; in use, the upper surfaces of both the first and second side wings are higher than the upper surface of the middle portion. This lower cover plate configuration is advantageous for use in extended railway container wagons, reducing the car body weight and increasing the load capacity while ensuring strength and performance.

[0012] Traditional railway freight car under-cover plates generally consist of three parts: the traction beam under-cover plate, the sleeper beam under-cover plate, and the under-cover plate itself. The inventors of this application have made improvements by merging the traction beam under-cover plate and the under-cover plate itself to design the under-cover plate composition with a specific structure as described in this application.

[0013] In this utility model, the central plane of the length direction of the first extension, the middle part, and the second extension is the plane of symmetry.

[0014] In this invention, the connecting hole can be circular, square, or elliptical, but is preferably circular.

[0015] According to the composition of the lower cover plate of the railway freight car described in this utility model, preferably, the connecting hole is set as a circular hole. This facilitates the connection of the upper center plate.

[0016] According to the composition of the lower cover plate of the railway freight car of the present invention, preferably, a first U-shaped opening is provided at one end of the middle part near the first extension, and the bent elliptical hole is formed between the first U-shaped opening and the first extension.

[0017] A second U-shaped opening is provided at one end of the middle part near the second extension, and the width of the second U-shaped opening is less than the vertical distance between the two strip plates.

[0018] The width of the first U-shaped opening is greater than the width of the second U-shaped opening. This helps to reduce the vehicle's weight while ensuring connection strength.

[0019] In this utility model, the two sides of the first U-shaped opening are connected to the first extension.

[0020] According to the composition of the lower cover plate of the railway freight car described in this utility model, preferably, the width of the end of the first side wing connected to the middle part is greater than the width of the end of the first side wing away from the middle part; the width of the end of the second side wing connected to the middle part is greater than the width of the end of the second side wing away from the middle part. This helps to reduce the vehicle's weight while ensuring connection strength.

[0021] According to the composition of the lower cover plate of the railway freight car described in this utility model, preferably, the width of the end of the second side wing that connects to the middle part is greater than the width of the end of the second side wing that is away from the middle part. This helps to reduce the vehicle's weight while ensuring connection strength.

[0022] According to the composition of the lower cover plate of the railway freight car described in this utility model, preferably, in the use state, with the upper surface of the middle part as the horizontal plane, the upper surface of the first side wing is set as a convex curved surface that gradually extends along one side of the middle part, and the end of the first side wing away from the middle part is substantially parallel to the middle part. This is beneficial to the stability of the structure.

[0023] According to the composition of the lower cover plate of the railway freight car described in this utility model, preferably, in the use state, the upper surface of the middle part is taken as a horizontal plane, and the upper surface of the second side wing is set as a convex curved surface that gradually extends along the other side of the middle part, and the end of the second side wing away from the middle part is substantially parallel to the middle part. This can meet the performance requirements.

[0024] According to the composition of the lower cover plate of the railway freight car of this utility model, preferably, the obtuse angle formed by the bend is set to be greater than 120° and less than 180°. Preferably, the obtuse angle formed by the bend is greater than 125° and less than 175°.

[0025] In this invention, the first extension specifically includes two bent and parallel bent plate bodies. The ends of these two bent plate bodies furthest from the middle portion extend inward and outward respectively along the width direction of the first extension, thus forming a closed end. The width of the closed end is greater than the width of the middle portion. That is, a bent elliptical hole is formed between the two bent plate bodies, the closed end, and the middle portion. An obtuse angle is formed between the outer edge of the bent plate body and the outer edge of the closed end; this obtuse angle is a rounded corner.

[0026] The two bent plate bodies have the same width and are connected to both sides of the first U-shaped opening, thereby forming a bent elliptical hole between the two bent plate bodies, the closed end, and the middle part. The width of any bent plate body is greater than or equal to the width of any strip plate in the second extension.

[0027] According to one embodiment of the present invention, in use, the projection of the bent elliptical hole onto the horizontal plane is an elliptical hole, the width of which is less than the vertical distance between the two strip plates of the second extension.

[0028] According to the composition of the lower cover plate of the railway freight car described in this utility model, preferably, the first side wing, the middle part and the second side wing are integrally formed structures.

[0029] In practical applications, the first extension can be called the rear reinforcing plate, the second extension can be called the front reinforcing plate, and the integrally formed structure of the first side wing, the middle part, and the second side wing can be called the lower cover plate.

[0030] On the other hand, this utility model also provides a railway freight car, which comprises an upper center plate and a lower cover plate as described above, wherein the upper center plate is fixed to the connecting hole in the middle part by a connector. 。

[0031] In this invention, the connecting element can be a rivet. The lower cover plate assembly can be connected to the traction beam by welding.

[0032] The lower cover plate assembly of this utility model is an improvement on the existing structure, forming an integrated lower cover plate assembly with a symmetrical structure. Specifically, it consists of a middle part, a first extension part, a second extension part, a first side wing part, and a second side wing part, wherein the first side wing part, the middle part, and the second side wing part are preferably integrally formed. This allows it to be applied to extended vehicle bodies and helps control the vehicle's weight while ensuring performance, thus guaranteeing the vehicle's load-bearing capacity. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the lower cover plate of a railway freight car according to the present invention.

[0034] Figure 2 This is a top view schematic diagram of the lower cover plate of a railway freight car according to the present invention.

[0035] Figure 3 This is a front view schematic diagram of the lower cover plate of a railway freight car according to the present invention.

[0036] Figure 4 This is a left-side view of the lower cover plate of a railway freight car according to the present invention.

[0037] The annotations in the attached figures are explained as follows:

[0038] 111-Middle part, 1111-Connecting hole; 112-First extension, 1121-Bent elliptical hole, 1122-Closed end, 113-Second extension, 114-First side wing, 115-Second side wing. Detailed Implementation

[0039] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0040] Example 1

[0041] Figure 1 This is a three-dimensional structural diagram of the lower cover plate of a railway freight car according to the present invention. Figure 2 This is a top view schematic diagram of the lower cover plate of a railway freight car according to the present invention.

[0042] Figure 3 This is a front view schematic diagram of the lower cover plate of a railway freight car according to the present invention. Figure 4 This is a left-side view of the lower cover plate of a railway freight car according to the present invention.

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the lower cover plate of the railway freight car in this embodiment has a symmetrical structure with a symmetrical plane. In use, the extension direction of the symmetrical plane is the same as the length direction of the railway freight car, and the symmetrical plane is perpendicular to the width direction of the railway freight car.

[0044] The lower cover plate of the railway freight car in this embodiment comprises a middle part 111, a first extension part 112, a second extension part 113, a first side wing part 114, and a second side wing part 115.

[0045] A connecting hole 1111 is provided at the center of the middle part 111. The connecting hole 1111 is a circular hole. The middle part 111 has a flat plate structure.

[0046] The first extension 112 and the second extension 113 are respectively disposed at opposite ends of the intermediate portion 111, and can be welded to the two ends of the intermediate portion 111 respectively. The first extension 112 is a bent structure, and the angle formed by the bend is an obtuse angle, which is set to be greater than 120° and less than 180°. The plane of symmetry passes through the geometric center of the first extension 112, the intermediate portion 111 and the second extension 113.

[0047] A bent elliptical hole 1121 is formed between the first extension 112 and the intermediate portion 111. Specifically, a first U-shaped opening is provided at the end of the intermediate portion 111 near the first extension 112, and the bent elliptical hole 1121 is formed between the first U-shaped opening and the first extension 112. In use, the projection of the bent elliptical hole 1121 onto the horizontal plane is an elliptical hole. The width of the end of the first extension 112 away from the intermediate portion 111 is greater than the width of the intermediate portion 111.

[0048] In use, with the upper surface of the middle part 111 as the horizontal plane, the upper surface of the first extension 112 near the middle part 111 is substantially coplanar with the upper surface of the middle part 111, and the upper surface of the other part of the first extension 112 is higher than the upper surface of the middle part 111.

[0049] In this embodiment, the first extension 112 specifically includes two bent and parallel bent plate bodies. The ends of the two bent plate bodies away from the middle portion 111 extend inward and outward respectively along the width direction of the first extension 112, thereby forming a closed end 1122. The width of the closed end 1122 is greater than the width of the middle portion 111. That is, a bent elliptical hole 1121 is formed between the two bent plate bodies, the closed end 1122, and the first U-shaped opening of the middle portion 111. An obtuse angle is formed between the bent plate bodies and the closed end 1122, and this obtuse angle is a rounded corner.

[0050] The second extension 113 consists of two parallel strips symmetrical about a plane of symmetry. The second extension 113 and the intermediate part 111 are substantially coplanar.

[0051] A second U-shaped opening is provided at one end of the middle portion 111 near the second extension portion 113. The width of the second U-shaped opening is less than the vertical distance between the two strip plates. The width of the second U-shaped opening is less than the width of the first U-shaped opening.

[0052] The first side wing 114 and the second side wing 115 are symmetrically disposed on both sides of the middle portion 111. The first side wing 114 and the second side wing 115 are curved panels. The first side wing 114 and the second side wing 115 have a common central surface along their length direction, and this central surface is perpendicular to the plane of symmetry.

[0053] The width of the end of the first side wing 114 that connects to the middle part 111 is greater than the width of the end of the first side wing 114 that is away from the middle part 111. The width of the end of the second side wing 115 that connects to the middle part 111 is greater than the width of the end of the second side wing 115 that is away from the middle part 111.

[0054] In use, the upper surface of the middle portion 111 is lower than the upper surfaces of the first side wing 114 and the second side wing 115. Specifically, in use, with the upper surface of the middle portion 111 as a horizontal plane, the upper surface of the first side wing 114 is a convex curved surface that gradually extends along one side of the middle portion 111, and the end of the first side wing 114 away from the middle portion 111 is substantially parallel to the middle portion; the upper surface of the second side wing 115 is a convex curved surface that gradually extends along the other side of the middle portion 111, and the end of the second side wing 115 away from the middle portion 111 is substantially parallel to the middle portion 111. That is, the first side wing 114 and the second side wing 115 are basically bent structures, with an obtuse angle, and this bending angle is away from the middle portion 111.

[0055] In this embodiment, the first side wing 114, the middle part 111, and the second side wing 115 are integrally formed structures and can be formed by molding.

[0056] Example 2

[0057] This embodiment provides a railway freight car, which comprises an upper center plate and a lower cover plate as described in Embodiment 1. The upper center plate is fixed to the connecting hole 1111 of the middle part 111 by a connector. The connector can be a rivet.

[0058] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model fall within the scope of this utility model.

Claims

1. A lower cover plate assembly for railway freight cars, characterized in that, It has a symmetrical structure with a plane of symmetry; when in use, the direction of extension of the plane of symmetry is the same as the length direction of the railway freight car; the lower cover plate consists of a middle part, a first extension part, a second extension part, a first side wing part, and a second side wing part. The middle part has a flat plate structure, and a connection hole is provided in the center. The first extension and the second extension are respectively disposed at both ends of the middle part; the first extension has a bent structure and the angle formed by the bend is an obtuse angle; a bent elliptical hole is formed between the first extension and the middle part; in the use state, the upper surface of a part of the first extension is substantially coplanar with the upper surface of the middle part, and the upper surface of another part is higher than the upper surface of the middle part. The width of the end of the first extension away from the middle part is greater than the width of the middle part; the center plane of the length direction of the first extension and the middle part is the plane of symmetry. The second extension consists of two parallel strips, which are symmetrical about the plane of symmetry; the second extension and the middle section are substantially coplanar. The first side wing and the second side wing are symmetrically disposed on both sides of the middle part; the first side wing and the second side wing have a common central surface along their length direction, which is perpendicular to the plane of symmetry; the first side wing and the second side wing are curved surface structures; in use, the upper surfaces of the first side wing and the second side wing are both higher than the upper surface of the middle part.

2. The lower cover plate assembly of the railway freight car according to claim 1, characterized in that, The connecting hole is a circular hole.

3. The lower cover plate assembly of the railway freight car according to claim 1, characterized in that: A first U-shaped opening is provided at one end of the middle portion near the first extension portion, and the bent elliptical hole is formed between the first U-shaped opening and the first extension portion. A second U-shaped opening is provided at one end of the middle part near the second extension, and the width of the second U-shaped opening is less than the vertical distance between the two strip plates. The width of the first U-shaped opening is greater than the width of the second U-shaped opening.

4. The lower cover plate assembly of the railway freight car according to claim 1, characterized in that, The width of the end of the first side wing that connects to the middle part is greater than the width of the end of the first side wing that is away from the middle part.

5. The lower cover plate assembly of the railway freight car according to claim 4, characterized in that, The width of the end of the second side wing that connects to the middle part is greater than the width of the end of the second side wing that is away from the middle part.

6. The lower cover plate assembly of the railway freight car according to claim 4, characterized in that, In use, with the upper surface of the middle part as the horizontal plane, the upper surface of the first side wing is set as a convex curved surface that gradually extends along one side of the middle part, and the end of the first side wing away from the middle part is substantially parallel to the middle part.

7. The lower cover plate assembly of the railway freight car according to claim 6, characterized in that, In use, with the upper surface of the middle part as the horizontal plane, the upper surface of the second side wing is set as a convex curved surface that gradually extends along the other side of the middle part, and the end of the second side wing away from the middle part is substantially parallel to the middle part.

8. The lower cover plate assembly of the railway freight car according to claim 1, characterized in that, The obtuse angle formed by the bend is set to be greater than 120° and less than 180°.

9. The lower cover plate assembly of the railway freight car according to any one of claims 1 to 8, characterized in that, The first side wing, the middle part, and the second side wing are integrally formed.

10. A railway freight car, characterized in that, It comprises an upper center plate and a lower cover plate of a railway freight car as described in any one of claims 1 to 9, wherein the upper center plate is fixed to the connecting hole of the middle part by a connector.

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