Tank car bodies and rail tank cars

Abstract

The present invention discloses a tank car body and a railway tank car, wherein the tank car body includes a sealed outer tank, with traction devices fixedly connected to both ends of the outer tank; an inner tank, which is embedded in the outer tank and is used to contain materials to be transported. The inner tank includes four tank walls, which are connected end to end; each of the tank walls includes a first straight edge, a second straight edge, and a transition portion located between the first straight edge and the second straight edge, the transition portion is an arc structure, and the transition portion protrudes toward the direction close to the outer tank.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation devices, and in particular to a tank car body and a railway tank car. Background Art

[0002] With the continuous improvement and advancement of railway freight car technology, users are increasingly demanding higher economic efficiency in railway freight car transport. Existing cylindrical tanks, with a circular cross-section, have low clearance utilization, small capacity, and poor transportation economics. Therefore, effectively increasing tank capacity and improving clearance utilization are pressing technical challenges. Summary of the Invention

[0003] An object of the present invention is to provide a tank car body and a railway tank car.

[0004] According to one aspect of the present invention, a tank truck body is provided, the tank truck body comprising a sealed outer tank, with traction devices fixedly connected to both ends of the outer tank;

[0005] An inner tank, the inner tank being embedded in the outer tank, the inner tank being used to contain substances to be transported, the inner tank comprising four tank walls connected end to end;

[0006] Each of the tank walls includes a first straight side portion, a second straight side portion, and a transition portion located between the first straight side portion and the second straight side portion. The transition portion is an arc structure and protrudes toward the direction close to the outer tank.

[0007] Optionally, the outer tank is a cylindrical structure, and a plurality of reinforcing ribs are provided on the outer surface of the side wall of the outer tank, and the reinforcing ribs extend from one end to the other end of the outer tank along the axial direction of the outer tank.

[0008] Optionally, the plurality of reinforcing ribs include a first reinforcing rib and a second reinforcing rib, the horizontal projection range of the first reinforcing rib is located at the midpoint between two adjacent transition portions, and the first reinforcing rib and the second reinforcing rib are symmetrically arranged relative to the central axis of the outer tank.

[0009] Optionally, the plurality of reinforcing ribs further include a third reinforcing rib, and the projection range of the third reinforcing rib on the outer surface of the inner tank is located at a position where the first straight edge portion or the second straight edge portion is connected to the transition portion.

[0010] Optionally, each of the bolster devices includes two symmetrically arranged bolster beams, two symmetrically arranged connecting beams and a bolster body;

[0011] The connecting beam is fixed to the outer surface of the outer tank, and the bolster beam is located between the connecting beam and the bolster body, and is connected to the connecting beam and the bolster body respectively.

[0012] Optionally, the upper end surface of the traction beam is fixed to the connecting beam, the lower end surface of the traction beam is provided with a flange, the flange is formed by bending the traction beam, and the traction body is fixed on the flange.

[0013] Optionally, the tail portion of each of the bolster beams is an inclined surface, and the flange is also provided on the inclined surface.

[0014] Optionally, two flanges located on the two bolster beams are bent in directions away from each other, and a concave surface is provided at a position where the flanges are connected to the connecting beam.

[0015] Optionally, an annular reinforcement rib is provided along the circumference of the inner tank, and the vertical projection range of the portion where the flange is connected to the connecting beam is spaced from the vertical projection range of the annular reinforcement rib.

[0016] According to one aspect of the present invention, a railway tank car is provided, comprising the above-mentioned tank car body.

[0017] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0019] Figure 1 2 is a schematic structural diagram of a tank truck body according to an embodiment of the present invention;

[0020] Figure 2 is a cross-sectional view of a tank truck body according to an embodiment of the present invention;

[0021] Figure 3 This is a partial enlarged view of the tank truck body in an embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the local structure of the tank truck body in an embodiment of the present invention.

[0023] Description of reference numerals:

[0024] 100, outer tank; 110, first reinforcing rib; 120, second reinforcing rib; 130, third reinforcing rib;

[0025] 200, inner tank; 210, first tank wall; 220, second tank wall; 230, third tank wall; 240, fourth tank wall; 250, first straight edge; 260, second straight edge; 270, transition portion;

[0026] 310. Bolster beam; 320. Connecting beam; 330. Bolster body; 340. Flanged edge; 350. Side surface of the tail; 360. Concave surface; 370. Annular reinforcement rib. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] like Figure 1 、 Figure 2 、 Figure 3 or Figure 4 As shown, the tank car body shown schematically includes:

[0029] A sealed outer tank 100 is fixedly connected to a traction device at each end of the outer tank 100; an inner tank 200 is embedded in the outer tank 100 and is used to contain the material to be transported. The inner tank 200 includes four tank walls, which are connected end to end. Each tank wall includes a first straight edge 250, a second straight edge 260, and a transition portion 270 located between the first straight edge 250 and the second straight edge 260. The transition portion 270 is a circular arc structure and protrudes toward the outer tank. The side wall of the inner tank formed by the four tank walls has a cross-section along the radial direction of the outer tank that is approximately square. The four transition portions 270 are located at the four corners of the square and protrude outward.

[0030] The outer tank 100 is used to house the inner tank 200, and the outer tank 100 is mounted outside the inner tank 200. A traction device is welded to both ends of the outer tank 100 to support the inner tank 200 within the outer tank 100. The inner tank 200 contains the material to be transported. The inner wall of the outer tank 100 can be configured into a predetermined shape to secure the inner tank 200. The inner tank 200 includes two end walls and side walls. The side walls of the inner tank 200 extend in the same direction as the side walls of the outer tank 100, and the two end walls of the inner tank 200 are opposite the two ends of the outer tank 100.

[0031] like Figure 2 As shown, Figure 2 The schematic cross-sectional view of the inner tank 200 is shown. The side wall of the inner tank 200 includes four tank walls. The four tank walls are integrally formed. The first straight sides 250 of two tank walls adjacent to each other in the horizontal direction are connected to each other, and the second straight sides 260 are opposite to each other in the vertical direction of the inner tank 200. The second straight sides 260 of two tank walls adjacent to each other in the vertical direction are connected to each other, and the first straight sides 250 are opposite to each other in the horizontal direction. Figure 2 As shown, Figure 2 A schematic cross-sectional view of the inner tank 200 is shown.

[0032] Figure 2The first straight side portion 250 and the second straight side portion 260 of each tank wall are plane, and the first straight side portion 250 and the second straight side portion 260 are located in mutually perpendicular directions. The transition portion 270 is bent in a direction away from the central axis of the inner tank 200. Figure 2 The midlines of two adjacent transition portions 270 are L1 and L2, and L1 and L2 are perpendicular to each other. It can be seen that L1 and L2 may not be perpendicular to each other.

[0033] By making the cross-sectional profile of the inner tank 200 comprise four smoothly connected tank walls with transition portions 270, the utilization rate of the clearance is significantly improved compared to the cross-sectional profile of a conventional circular inner tank 200, thereby increasing the cross-sectional size of the inner tank 200 within the clearance range and effectively increasing the volume of the inner tank 200. The clearance refers to the outline dimension line that is not allowed to be exceeded by the locomotive and the buildings and equipment adjacent to the railway line in order to ensure the safety of the locomotive and the rolling stock in operation on the railway line and prevent the locomotive and the rolling stock from colliding with the buildings and equipment adjacent to the line.

[0034] In one embodiment, Figure 1 and Figure 2 As shown, the outer tank 100 is a cylindrical structure, and a reinforcing rib is provided on the outer surface of the side wall of the outer tank 100 , and the reinforcing rib extends from one end to the other end of the outer tank 100 along the axial direction of the outer tank 100 .

[0035] Specifically, to increase the strength and bearing capacity of the outer tank 100, linear reinforcing ribs are provided on the outer wall of the outer tank 100. The two ends of the reinforcing ribs are respectively connected to the two ends of the outer tank 100. The reinforcing ribs can be mounted on the surface of the outer tank 100 by welding or clamping.

[0036] Furthermore, the projection range of the reinforcing rib in the horizontal direction is located at the midpoint between two adjacent transition portions 270. The midpoint is the midpoint of the line connecting the two adjacent transition portions 270.

[0037] In this way, the bearing strength of the outer tank 100 can be enhanced, and the longitudinal force load of the outer tank 100 at the midpoint of two adjacent transition portions 270 can be increased.

[0038] like Figure 2 In the embodiment, at least two reinforcing ribs are arranged outside the outer tank 100, and the two reinforcing ribs include a first reinforcing rib 110 and a second reinforcing rib 120. The first reinforcing rib 110 and the second reinforcing rib 120 are symmetrically arranged relative to the central axis of the outer tank 100 in a horizontal plane to further enhance the longitudinal force load of the outer tank 100.

[0039] Furthermore, in order to further enhance the longitudinal force load of the outer tank 100 . Figure 2The tank truck body further includes a plurality of third reinforcing ribs 130 , the projection of the third reinforcing ribs 130 on the outer surface of the inner tank 200 being located at a position where the first straight edge 250 or the second straight edge 260 is connected to the transition portion 270 .

[0040] This embodiment is provided with a plurality of third reinforcing ribs 130, and the structure of the third reinforcing ribs 130 is the same as the connection mode of the first reinforcing ribs 110 and the second reinforcing ribs 120 with the outer can 100, and the structure of the third reinforcing ribs 130 is the same as the structure of the first reinforcing ribs 110 and the second reinforcing ribs 120. Figure 2 In the figure, the center point of the cross section of the inner tank 200 is point A, the connection point between the second straight edge portion 260 and the transition portion 270 is point F, and the third reinforcing rib 130 is located on the outer surface of the outer tank 100, on the extension line of the line between point A and point F.

[0041] In one embodiment of the present invention, see Figure 1 、 Figure 3 and Figure 4 The bolster device includes a bolster beam 310, a connecting beam 320 and a bolster body 330. The connecting beam 320 is fixed to the outer surface of the outer tank 100, and the bolster beam 310 is located between the connecting beam 320 and the bolster body 330, and is connected to the connecting beam 320 and the bolster body 330 respectively.

[0042] like Figure 1 The illustrated bolster body 330 is connected to the connecting beam 320 via a bolster beam 310. The connecting beam 320 can have a rectangular or wedge-shaped cross-section. The connecting beam 320 is welded to the outer surface of the outer tank 100. Two connecting beams 320 can be arranged side by side. The bolster body 330 is disposed on the connecting beams 320 at both ends of the outer tank 100, with portions of the bolster body 330 axially extending beyond the ends of the outer tank 100. The bolster beam 310 is perpendicular to the surface on which the connecting beam 320 is located. This improves the connection strength between the bolster body 330 and the outer tank 100.

[0043] Further, Figure 3 The upper end face of the bolster beam 310 is fixed to the connecting beam 320, and the lower end face of the bolster beam 310 is provided with a flange 340, to which the bolster body 330 is fixed. A bending angle of 90° is formed between the flange 340 and the bolster beam 310. The upper end face of the bolster beam 310 is fixed to the middle position of the connecting beam 320, away from the edge of the connecting beam 320. The projection range of the flange 340 on the horizontal plane covers the edge of the projection range of the connecting beam 320 on the horizontal plane. The edge covered by the projection range of the flange 340 is located on the side of the connecting beam 320 that is in the same bending direction as the flange 340. In this way, the longitudinal bearing capacity of the tank body can be further increased.

[0044] In one example, Figure 3The inclined surface 350 of one of the bolster beams 310 is provided with a flange 340, while the inclined surface 350 of the other bolster beam 310 is not provided with a flange 340. Figure 3 The structure of the bolster beam 310 having the flange 340, Figure 3 The side surface 350 at the tail of the bolster beam is an inclined surface, and the flange 340 extends from the lower end surface through the side surface 350 at the tail to the connecting beam 320. The tail of the bolster beam is the portion along the axial direction of the outer tank 100, away from the end of the outer tank 100. The bolster beam has two opposing side surfaces, one of which is located at the tail of the bolster beam. The side surface 350 at the tail of the bolster beam is inclined from the side close to the outer tank 100 toward the side gradually away from the outer tank 100 along the direction from the upper surface of the bolster beam to the lower surface. The flange 340 extends along the inclined surface to the connecting beam 320 and is welded to the connecting beam 320. In this way, the flange 340 can further disperse the stress of the bolster beam 310 and enhance the connection strength between the connecting beam 320 and the outer surface.

[0045] further, Figure 3 A concave surface 360 ​​is formed at the location where the flange 340 is connected to the connecting beam 320 to further enhance the bearing strength of the bent portion on the outer tank 100.

[0046] In one embodiment of the present invention, an annular reinforcing rib 370 is provided along the circumference of the inner tank 200. The vertical projection of the portion where the flange 340 connects to the connecting beam 320 is spaced from the vertical projection of the annular reinforcing rib 370. The annular reinforcing rib 370 can be continuous or discontinuous in shape. This reduces stress at the junction of the flange 340 and the connecting beam 320, thereby enhancing the connection strength between the flange 340 and the connecting beam 320.

[0047] According to another aspect of the present invention, a railway tank car is provided. The railway tank car includes the above-mentioned tank car body.

[0048] Example 1

[0049] The structure of the tank car body in this embodiment can refer to Figure 1 and Figure 2 It is understood that the side wall of the inner tank 200 is surrounded by the first tank wall 210, the second tank wall 220, the third tank wall 230 and the fourth tank wall 240, the first straight portion of the first tank wall 210 is connected to the first straight portion of the second tank wall 220, the second straight portion of the second tank wall 220 is connected to the second straight portion of the third tank wall 230, and so on.

[0050] The first straight edge portion 250 and the second straight edge portion 260 of each tank wall are at equal distances from the center line L1 / L2 of the transition portion 270 to form a Figure 2The inner tank 200 has a substantially square cross-section. First and second reinforcing ribs 110, 120 are located on either side of the outer tank 100 in the horizontal direction. The first reinforcing rib 110 is located at the junction of the second tank wall 220 and the third tank wall 230, while the second reinforcing rib 120 is located at the junction of the first tank wall 210 and the fourth tank wall 240. Four third reinforcing ribs 130 are provided between the first and second reinforcing ribs 110, 120.

[0051] Two parallel connecting beams 320 and two bolster beams 310 are provided on one side of one end of the outer tank 100. The flanges 340 of the two bolster beams 310 are bent away from each other.

[0052] Reinforcement ribs are welded to the outer wall of the outer tank 100. The reinforcement ribs extend along the axial direction of the outer tank 100. The reinforcement ribs are located at the connection position of two adjacent tank walls, that is, in the horizontal direction, the reinforcement ribs are located at the connection position of the two second straight sides 260. One side is the first reinforcement rib 110, and the other side is the second reinforcement rib 120. The first reinforcement rib 110 and the second reinforcement rib 120 are relative to each other. Figure 2 The cross section of the inner tank 200 is symmetrical along the midline of the vertical direction. The thickness of the reinforcement rib is 2cm-15cm, and the dimension of the reinforcement rib along the vertical direction is 10cm-40cm.

[0053] Example 2

[0054] It should be noted that the structure of the second embodiment is substantially the same as that of the first embodiment, with the only difference being the cross-sectional shape of the inner tank 200 and the positions of the first and second reinforcing ribs 110 and 120. Therefore, for the sake of brevity, the structures identical to those of the previous embodiment will not be described in detail in this embodiment.

[0055] In the second embodiment of the present application, the distance between the first straight edge 250 of each tank wall of the inner tank 200 and the center line of the transition portion 270 is greater than or less than the distance between the second straight edge 260 and the center line of the transition portion 270, so as to form a cross-sectional shape of the inner tank 200 that is approximately rectangular.

[0056] The long side of the rectangular cross section extends in the vertical direction, and the first reinforcing rib 110 and the second reinforcing rib 120 are located on the long side of the rectangular cross section. Figure 2 The first reinforcing rib 110 is located at the midpoint between the second tank wall 220 and the third tank wall 230 . Figure 2 The second reinforcement rib 120 is located at the midpoint between the first tank wall 210 and the fourth tank wall 240 .

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A tank truck body, characterized in that: include: A sealed outer tank, with pillow pulling devices fixedly connected at both ends of the outer tank; An inner tank, the inner tank being embedded in the outer tank, the inner tank being used to contain substances to be transported, the inner tank comprising four tank walls connected end to end; Each of the tank walls comprises a first straight side portion, a second straight side portion, and a transition portion between the first straight side portion and the second straight side portion, wherein the transition portion is an arc structure and protrudes toward the direction close to the outer tank; The outer tank is a cylindrical structure, and a plurality of reinforcing ribs are provided on the outer surface of the side wall of the outer tank, and the reinforcing ribs extend from one end to the other end of the outer tank along the axial direction of the outer tank; The plurality of reinforcing ribs include a first reinforcing rib and a second reinforcing rib, wherein the horizontal projection of the first reinforcing rib is located at the midpoint between two adjacent transition portions, and the first reinforcing rib and the second reinforcing rib are symmetrically arranged relative to the central axis of the outer tank; The plurality of reinforcing ribs further include a third reinforcing rib, wherein the projection range of the third reinforcing rib on the outer surface of the inner tank is located at a position where the first straight side portion and the transition portion are connected; or, the projection range of the third reinforcing rib on the outer surface of the inner tank is located at a position where the second straight side portion and the transition portion are connected; Each of the traction pillow devices includes two symmetrically arranged traction pillow beams, two symmetrically arranged connecting beams and a traction pillow body; The connecting beam is fixed to the outer surface of the outer tank, and the bolster beam is located between the connecting beam and the bolster body and is connected to the connecting beam and the bolster body respectively; The upper end surface of the bolster beam is fixed to the connecting beam, the lower end surface of the bolster beam is provided with a flange, the flange is formed by bending the bolster beam, and the bolster body is fixed to the flange; The tail of each of the bolster beams is an inclined surface, and the flange is also provided on the inclined surface; An annular reinforcing rib is provided along the circumference of the inner tank, and the projection range of the portion where the flange is connected to the connecting beam in the vertical direction is spaced from the projection range of the annular reinforcing rib in the vertical direction.

2. The tank truck body according to claim 1, characterized in that: The two flanges respectively located at the two bolster beams are bent in directions away from each other, and the positions where the flanges are connected to the connecting beams have concave surfaces.

3. A railway tank car, characterized in that: The railway tank car comprises the tank car body according to any one of claims 1 or 2.

Images