Double-sealing unloading port of railway hopper car

Abstract

The application discloses a double-layer sealing unloading opening of a transport railway hopper car and relates to the technical field of hopper cars. The double-layer sealing unloading opening comprises two end hopper assemblies arranged horizontally, a first side hopper assembly connected between the side edges of the two end hopper assemblies and a second side hopper assembly connected between the other side edges of the two end hopper assemblies. The inner side of the opening below each of the first side hopper assembly and the second side hopper assembly is provided with an inner sealing structure. The outer side of the opening below each of the end hopper assemblies, the first side hopper assembly and the second side hopper assembly is provided with an outer sealing structure in the form of inlaying. The lowest position of the inner sealing structure is lower than the lowest position of the outer sealing structure. When the bottom door plate contacts the hopper opening, the inner sealing structure is first extruded, and then the outer sealing structure is extruded. The gaps at the connecting positions of the four corners of the frame are eliminated due to the extrusion of the outer sealing structure, so that the sealing effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hopper cars, more particularly to the technical field of a double-layer sealed discharge opening of a railway hopper car. BACKGROUND

[0002] The hopper car for railway transportation is of a bottom door type, usually provided with a bottom door at the bottom of the vehicle to achieve the purpose of unloading by opening and closing the bottom door. In order to avoid leakage of the goods during transportation, a bottom door with sealing function is usually used, but the sealing of the domestic hopper car bottom door is mainly for bulk goods such as grain (non-powder), ore, coal, and ballast, etc. When transporting the above goods, considering the particle size of the goods, a certain gap is usually left when the bottom door is sealed to ensure the flexible movement of the bottom door, but this structure cannot meet the sealing requirements of powdery goods.

[0003] Due to the limitation of the size of the funnel opening and the bottom door and the manufacturing process, the flatness of the "mouth" shaped funnel opening and the flatness of the bottom door plate are out of tolerance, and the sealing effect is not good when they are used together. Therefore, when transporting fine-particle powdery goods, only using the first layer of sealing structure may cause leakage of the goods.

[0004] Therefore, it is necessary to study a new sealing structure that meets the sealing requirements of fine-particle powdery goods and ensures the reliable sealing performance of the vehicle during operation. SUMMARY

[0005] The present application aims to solve the technical problem of poor sealing effect caused by the out-of-tolerance flatness of the "mouth" shaped funnel opening and the bottom door plate when they are used together, and provides a double-layer sealed discharge opening of a railway hopper car.

[0006] In order to achieve the above-mentioned purpose, the present application specifically adopts the following technical solutions:

[0007] The present application provides a double-layer sealed discharge opening of a railway hopper car, which comprises a discharge opening main body forming a "mouth" structure, the discharge opening main body comprising two end funnel assemblies arranged transversely, a first side funnel assembly connecting the side edges between the two end funnel assemblies, and a second side funnel assembly connecting the side edges between the two end funnel assemblies.

[0008] An inner layer sealing structure is arranged on the inner side of the opening below the first side funnel assembly and the second side funnel assembly; an outer layer sealing structure is arranged on the outer side of the opening below each of the end funnel assemblies, the first side funnel assembly, and the second side funnel assembly in an inlaid form, and the lowest position of the inner layer sealing structure is lower than the lowest position of the outer layer sealing structure.

[0009] Specifically, the bottom door plate first squeezes the inner layer sealing structure and then squeezes the outer layer sealing structure when the bottom door plate contacts the funnel mouth. The four corners of the frame eliminate the gap at the connection due to the squeezing of the outer layer sealing structure, thereby achieving the sealing effect.

[0010] In one embodiment, the inner layer sealing structure is a broken line-shaped rubber sealing plate, and the angle of the broken line-shaped rubber sealing plate is greater than 90°.

[0011] In one embodiment, the outer layer sealing structure is a rubber sealing strip in the shape of “Ω”.

[0012] In one embodiment, the end funnel assembly comprises an end funnel plate, a transverse reinforcing beam, a transverse pressing strip, and a transverse sealing strip.

[0013] The end funnel plate is connected with the first side funnel assembly and the second side funnel assembly on both sides, respectively. The transverse reinforcing beam is arranged transversely outside the opening at the bottom of the end funnel plate. The transverse reinforcing beam is provided with threaded holes at the bottom for mounting the transverse pressing strip. The bottom lower surface of the transverse pressing strip is provided with a transverse groove. The transverse sealing strip is mounted in the transverse groove through the mounting part.

[0014] In one embodiment, the transverse sealing strip is the outer layer sealing structure, and the transverse sealing strip is a rubber sealing strip in the shape of “Ω”.

[0015] In one embodiment, the first side funnel assembly comprises a first side end funnel plate, a first pressing plate, a first longitudinal sealing plate, a first longitudinal sealing strip, a first pressing strip, a first longitudinal reinforcing beam, a first sealing plate, and a first mounting plate.

[0016] The first mounting plate is fixed to the outside of the first side end funnel plate through the mounting hole. The first pressing plate and the first longitudinal sealing plate are fixed to the inside of the first side end funnel plate through the mounting hole. The first pressing plate is used to press the first longitudinal sealing plate. The mounting holes of the first side end funnel plate, the first mounting plate, the first pressing plate, and the first longitudinal sealing plate are all center-aligned, and the four are locked through the bolt assembly.

[0017] The first longitudinal reinforcing beam is arranged outside the first side end funnel plate in a groove structure. The two ends of the first longitudinal reinforcing beam are sealed by two first sealing plates to prevent rainwater and other sundries from entering. The bottom of the first longitudinal reinforcing beam is uniformly provided with threaded holes for mounting the first pressing strip. The bottom lower surface of the first pressing strip is provided with a first longitudinal groove. The first longitudinal sealing strip is mounted in the first longitudinal groove through the mounting part.

[0018] In one embodiment, the first longitudinal sealing plate is the inner layer sealing structure, and the first longitudinal sealing plate is a broken line-shaped rubber sealing plate with a cross-section angle of 120°.

[0019] The first longitudinal sealing strip is an outer layer sealing structure, and the first longitudinal sealing strip is a rubber sealing strip with a cross-section in the shape of an omega.

[0020] In one embodiment, the second side funnel assembly includes a second side end funnel plate, a second pressing plate, a second longitudinal sealing plate, a second longitudinal sealing strip, a second pressing strip, a second longitudinal reinforcing beam, a second sealing plate, a second reinforcing column, and a second mounting plate.

[0021] The second mounting plate is fixed outside the second side end funnel plate through a mounting hole, the second pressing plate and the second longitudinal sealing plate are fixed inside the second side end funnel plate through a mounting hole, the second pressing plate is used to press the second longitudinal sealing plate, the mounting holes of the second side end funnel plate, the second mounting plate, the second pressing plate, and the second longitudinal sealing plate are centrally aligned, and the four are locked through a bolt assembly.

[0022] The second longitudinal reinforcing beam is in a groove structure and is arranged outside the second side end funnel plate, the bottom of the second longitudinal reinforcing beam is uniformly provided with a threaded hole for mounting the second pressing strip, the bottom lower surface of the second pressing strip is provided with a second longitudinal groove, and the second longitudinal sealing strip is mounted in the second longitudinal groove through a mounting portion.

[0023] In one embodiment, the second reinforcing column is fixed with the second side end funnel plate, the second reinforcing column is in an L-shaped structure and is arranged outside the second side end funnel plate, and is fixed with the second longitudinal reinforcing beam, the two ends of the second longitudinal reinforcing beam and the second reinforcing column are both sealed by two second sealing plates to prevent rainwater and other sundries from entering.

[0024] In one embodiment, the second longitudinal sealing plate is an inner layer sealing structure, and the second longitudinal sealing plate is a rubber sealing plate with a cross-section in the shape of a 120° broken line.

[0025] The second longitudinal sealing strip is an outer layer sealing structure, and the second longitudinal sealing strip is a rubber sealing strip with a cross-section in the shape of an omega.

[0026] The beneficial effects of the present application are as follows:

[0027] 1. The double-layer inner and outer sealing structure in the shape of a square is adopted, the layer sealing structure is first extruded when the door plate contacts the funnel port, then the outer layer sealing structure is extruded, the gaps at the connections of the four corners of the frame are eliminated due to the extrusion of the outer layer sealing structure, and the sealing effect is achieved. Not only can the sealing of bulk cargo transportation be met, but also the sealing of fine particulate powder cargo transportation can be met.

[0028] 2. The double-layer rubber sealing structure is adopted, the existing assembly process is met, and the matching precision of the components of the unloading port caused by the process manufacturing error is reduced.

[0029] 3. The sealing rubber plate is connected by bolts and the sealing strip is installed in an embedded manner, which is convenient for disassembly and assembly and reduces labor intensity.

[0030] 4. The inner sealing structure of the present invention is specifically as follows: A metal pressing plate prefabricated with threaded mounting holes and a zigzag rubber sealing plate (the cross-section is greater than 90°, and the optimal choice is when the cross-section is 120°) prefabricated with mounting through holes are bolted to the appropriate position on the edge of the funnel mouth prefabricated with threaded mounting holes by bolts. When the bottom door is closed, the bottom door panel first squeezes the zigzag rubber sealing plate to achieve a primary sealing effect.

[0031] 5. The outer sealing structure of the present invention is specifically as follows: First, a metal mounting plate with a "concave" cross-section and threaded mounting holes prefabricated on the bottom surface is fixed to the appropriate position on the edge of the funnel mouth, and then a rubber sealing strip with an "Ω" cross-section is embedded in the metal mounting plate. When the bottom door is closed, the bottom door panel will squeeze the top of the rubber sealing strip with an "Ω" cross-section to achieve a secondary sealing effect.

[0032] 6. The key of the present invention lies in that the compression amount (deformation amount) of the rubber sealing strip with an "Ω" cross-section used in the second-layer sealing structure is relatively large, which can compensate for the out-of-tolerance of the flatness of the "square" funnel mouth and the flatness of the bottom door panel.

[0033] 7. By adopting the aforementioned double-layer sealing structure, the problem that the out-of-tolerance of the flatness of the "square" funnel mouth and the flatness of the bottom door panel leads to poor sealing effect when they are used in combination can be completely solved. Brief Description of the Drawings

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0035] Figure 1 is a side view of a double-layer sealed unloading port of a transportation railway hopper car provided by the present invention;

[0036] Figure 2 is a top view of a double-layer sealed unloading port of a transportation railway hopper car provided by the present invention;

[0037] Figure 3 is Figure 2 a rotating view at A-A in

[0038] Figure 4 is a schematic structural view of an end hopper assembly;

[0039] Figure 5 is a structural schematic diagram of the first side funnel assembly;

[0040] Figure 6 is a structural schematic diagram of the first side funnel assembly after hiding the first sealing plate;

[0041] Figure 7 is a structural schematic diagram of the second side funnel assembly;

[0042] Figure 8 is a structural schematic diagram of the second side funnel assembly after hiding the second sealing plate;

[0043] Reference signs: 1 - end funnel assembly, 2 - first side funnel assembly, 3 - second side funnel assembly;

[0044] 1.1 - end funnel plate, 1.2 - transverse reinforcing beam, 1.3 - transverse pressing strip, 1.4 - transverse sealing strip;

[0045] 2.1 - first side end funnel plate, 2.2 - first pressing plate, 2.3 - first longitudinal sealing plate, 2.4 - first longitudinal sealing strip, 2.5 - first pressing strip, 2.6 - first longitudinal reinforcing beam, 2.7 - first sealing plate, 2.8 - first mounting plate;

[0046] 3.1 - second side end funnel plate, 3.2 - second pressing plate, 3.3 - second longitudinal sealing plate, 3.4 - second longitudinal sealing strip, 3.5 - second pressing strip, 3.6 - second longitudinal reinforcing beam, 3.7 - second sealing plate, 3.8 - second reinforcing column, 3.9 - second mounting plate. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and technical effects of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0049] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0050] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0051] Embodiment 1

[0052] As Figures 1 to 8 shown, this embodiment provides a double-layer sealed unloading port for a transportation railway hopper car, including a discharge port main body forming a "mouth" - shaped structure. The discharge port main body includes two end hopper assemblies <1> arranged horizontally, a first side hopper assembly <2> connecting the one - side edges of the two end hopper assemblies <1>, and a second side hopper assembly <3> connecting the other - side edges of the two end hopper assemblies <1>.

[0053] Inner - layer sealing structures are provided on the inner sides of the openings below the first - side end hopper plate <2.1> assemblies and the second - side end hopper plate <3.1> assemblies; Outer - layer sealing structures are provided in an embedded form on the outer sides of the openings below each end hopper plate <1.1> assembly, the first - side end hopper plate <2.1> assembly, and the second - side end hopper plate <3.1> assembly. The lowest position of the inner - layer sealing structure is lower than the lowest position of the outer - layer sealing structure.

[0054] Specifically, when the bottom door plate contacts the hopper opening, it first squeezes the inner - layer sealing structure and then the outer - layer sealing structure. The gaps at the connections are eliminated due to the squeezing of the outer - layer sealing structure at the four corners of the frame, achieving a sealing effect.

[0055] Embodiment 2

[0056] As Figures 1 to 8 shown, this embodiment provides a double - layer sealed unloading port for a transportation railway hopper car, including a discharge port main body forming a "mouth" - shaped structure. The discharge port main body includes two end hopper assemblies <1> arranged horizontally, a first side hopper assembly <2> connecting the one - side edges of the two end hopper assemblies <1>, and a second side hopper assembly <3> connecting the other - side edges of the two end hopper assemblies <1>.

[0057] An inner sealing structure is provided on the inner side of the openings below the first side-end funnel plate 2.1 assembly and the second side-end funnel plate 3.1 assembly; an outer sealing structure is provided in an embedded form on the outer side of the openings below each end funnel plate 1.1 assembly, the first side-end funnel plate 2.1 assembly, and the second side-end funnel plate 3.1 assembly, and the lowest position of the inner sealing structure is lower than the lowest position of the outer sealing structure.

[0058] The inner sealing structure is a folded rubber sealing plate, and the cross-sectional angle of the folded rubber sealing plate is greater than 90°.

[0059] The outer sealing structure is a rubber sealing strip with a cross-section in the shape of "Ω".

[0060] Embodiment 3

[0061] As Figures 1 to 4 shown, this embodiment provides a double-sealed unloading port for a transportation railway hopper car, including a discharge port main body forming a "mouth" structure. The discharge port main body includes two end funnel assemblies 1 arranged horizontally, a first side funnel assembly 2 connecting the one-side edges between the two end funnel assemblies 1, and a second side funnel assembly 3 connecting the other-side edges between the two end funnel assemblies 1. [[ID=十五]]

[0062] The end funnel plate 1.1 assembly includes an end funnel plate 1.1, a horizontal reinforcing beam 1.2, a horizontal pressing strip 1.3, and a horizontal sealing strip 1.4;

[0063] Both sides of the end funnel plate are respectively connected to the first side-end funnel plate 2.1 assembly and the second side-end funnel plate 3.1 assembly. The horizontal reinforcing beam 1.2 is horizontally arranged on the outer side of the opening below the end funnel plate 1.1; threaded holes for installing the horizontal pressing strip 1.3 are provided at the bottom of the horizontal reinforcing beam 1.2. A horizontal groove is formed on the lower surface of the bottom of the horizontal pressing strip 1.3, and the horizontal sealing strip 1.4 is installed in the horizontal groove through the installation part.

[0064] The horizontal sealing strip 1.4 is an outer sealing structure, and the horizontal sealing strip 1.4 is a rubber sealing strip with a cross-section in the shape of "Ω".

[0065] [[ID=二十六]]In this embodiment, the outer sealing structure is specifically: First, a metal mounting plate with a cross-section in the shape of "concave" and prefabricated threaded mounting holes on the bottom surface is fixed at an appropriate position on the edge of the hopper opening, and then a rubber sealing strip with a cross-section in the shape of "Ω" is embedded in the metal mounting plate. When the bottom door is closed, the bottom door panel will squeeze the top of the rubber sealing strip with a cross-section in the shape of "Ω" to achieve a secondary sealing effect. The rubber sealing strip with a cross-section in the shape of "Ω" used in the outer sealing structure has a relatively large compression amount (deformation amount), which can compensate for the out-of-tolerance of the flatness of the "mouth"-shaped hopper opening and the flatness of the bottom door panel.

[0066] Embodiment 4

[0067] As Figures 1 to 3, Figures 5 to 6 As shown in Figures 5 to 6 , this embodiment provides a double-layer sealed unloading port for a transportation railway hopper car, which includes a main body of the unloading port forming a "mouth" structure. The main body of the unloading port includes two end hopper assemblies 1 arranged horizontally, a first side hopper assembly 2 connecting the one-side edges of the two end hopper assemblies 1, and a second side hopper assembly 3 connecting the other-side edges of the two end hopper assemblies 1.

[0068] The first side end hopper plate 2.1 assembly includes a first side end hopper plate 2.1, a first pressing plate 2.2, a first longitudinal sealing plate 2.3, a first longitudinal sealing strip 2.4, a first pressing strip 2.5, a first longitudinal reinforcing beam 2.6, a first sealing plate 2.7, and a first mounting plate 2.8;

[0069] The first mounting plate 2.8 is fixed to the outside of the first side end hopper plate 2.1 through mounting holes, and the first pressing plate 2.2 and the first longitudinal sealing plate 2.3 are fixed to the inside of the first side end hopper plate 2.1 through mounting holes. The first pressing plate 2.2 is used to press the first longitudinal sealing plate 2.3. The mounting holes of the first side end hopper plate 2.1, the first mounting plate 2.8, the first pressing plate 2.2, and the first longitudinal sealing plate 2.3 are all centered and locked by bolt assemblies;

[0070] The first longitudinal reinforcing beam 2.6 is arranged in a trough-shaped structure on the outside of the first side end hopper plate 2.1. The two ends of the first longitudinal reinforcing beam 2.6 are sealed by two first sealing plates 2.7 to prevent rain and other sundries from entering; threaded holes for installing the first pressing strip 2.5 are uniformly arranged at the bottom of the first longitudinal reinforcing beam 2.6. A first longitudinal groove is formed on the lower surface of the bottom of the first pressing strip 2.5, and the first longitudinal sealing strip 2.4 is installed in the first longitudinal groove through the installation part.

[0071] The first longitudinal sealing plate 2.3 is an inner-layer sealing structure, and the first longitudinal sealing plate 2.3 is a rubber sealing plate with a broken-line shape with a cross-section of 120°;

[0072] The first longitudinal sealing strip 2.4 is an outer-layer sealing structure, and the first longitudinal sealing strip 2.4 is a rubber sealing strip with a cross-section of "Ω" shape.

[0073] In this embodiment, the inner-layer sealing structure is specifically: a metal pressing plate prefabricated with threaded mounting holes and a broken-line-shaped (the cross-section is greater than 90°, and the cross-section of 120° is the optimal choice) rubber sealing plate prefabricated with mounting through holes are bolted to the appropriate position of the edge of the hopper mouth prefabricated with threaded mounting holes by bolts. When the bottom door is closed, the bottom door panel first squeezes the broken-line-shaped rubber sealing plate to achieve a primary sealing effect.

[0074] The outer sealing structure is specifically: first, a metal mounting plate with a "concave" cross-section and a pre-fabricated threaded mounting hole in the bottom surface is fixed at an appropriate position on the edge of the funnel mouth, and then a rubber sealing strip with an "Ω" cross-section is embedded in the metal mounting plate. When the bottom door is closed, the bottom door plate will press the top of the rubber sealing strip with an "Ω" cross-section to achieve a secondary sealing effect. The rubber sealing strip with an "Ω" cross-section used in the outer sealing structure has a large compression amount (deformation amount), which can compensate for the flatness tolerance of the "mouth" shaped funnel mouth and the flatness tolerance of the bottom door plate.

[0075] Embodiment 4

[0076] As shown in Figures 1 to 3 , Figures 7 to 8 , the present embodiment provides a double-layer sealing unloading port for a railway hopper car, which includes a discharge port body forming a "mouth" structure, and the discharge port body includes two end funnel assemblies 1 arranged transversely, a first side funnel assembly 2 connecting the side edges of the two end funnel assemblies 1, and a second side funnel assembly 3 connecting the other side edges of the two end funnel assemblies 1.

[0077] The second side end funnel plate assembly 3.1 includes a second side end funnel plate 3.1, a second pressing plate 3.2, a second longitudinal sealing plate 3.3, a second longitudinal sealing strip 3.4, a second pressing strip 3.5, a second longitudinal reinforcing beam 3.6, a second sealing plate 3.7, a second reinforcing column 3.8, and a second mounting plate 3.9.

[0078] The second mounting plate 3.9 is fixed to the outer side of the second side end funnel plate 3.1 through a mounting hole, the second pressing plate 3.2 and the second longitudinal sealing plate 3.3 are fixed to the inner side of the second side end funnel plate 3.1 through mounting holes, the second pressing plate 3.2 is used to press the second longitudinal sealing plate 3.3, the mounting holes of the second side end funnel plate 3.1, the second mounting plate 3.9, the second pressing plate 3.2, and the second longitudinal sealing plate 3.3 are all centrally aligned, and the four are locked through a bolt assembly.

[0079] The second longitudinal reinforcing beam 3.6 is arranged outside the second side end funnel plate 3.1 in a groove structure, the bottom of the second longitudinal reinforcing beam 3.6 is uniformly provided with threaded holes for mounting the second pressing strip 3.5, the bottom lower surface of the second pressing strip 3.5 is provided with a second longitudinal groove, and the second longitudinal sealing strip 3.4 is mounted in the second longitudinal groove through a mounting portion.

[0080] The second reinforcing column 3.8 is fixed with the second side end funnel plate 3.1, the second reinforcing column 3.8 is arranged outside the second side end funnel plate 3.1 in an L-shaped structure and is fixed with the second longitudinal reinforcing beam 3.6, and the two ends of the second longitudinal reinforcing beam 3.6 and the second reinforcing column 3.8 are both sealed by two second sealing plates 3.7 to prevent rainwater and other debris from entering.

[0081] The second longitudinal sealing plate 3.3 is an inner sealing structure, and the second longitudinal sealing plate 3.3 is a rubber sealing plate with a broken line shape having a cross-section of 120°;

[0082] The second longitudinal sealing strip 3.4 is an outer sealing structure, and the second longitudinal sealing strip 3.4 is a rubber sealing strip with a cross-section in the shape of "Ω".

[0083] In this embodiment, the inner sealing structure specifically is: using bolts to bolt a metal pressing plate prefabricated with threaded mounting holes and a broken line-shaped (cross-section greater than 90°, 120° is the optimal choice) rubber sealing plate prefabricated with mounting through holes to an appropriate position on the edge of the funnel mouth prefabricated with threaded mounting holes. When the bottom door is closed, the bottom door plate first squeezes the broken line-shaped rubber sealing plate to achieve a primary sealing effect.

[0084] The outer sealing structure specifically is: first, fixing a metal mounting plate with a cross-section in the shape of "concave" and prefabricated with threaded mounting holes on the bottom at an appropriate position on the edge of the funnel mouth, and then embedding a rubber sealing strip with a cross-section in the shape of "Ω" into the metal mounting plate. When the bottom door is closed, the bottom door plate will squeeze the top of the rubber sealing strip with a cross-section in the shape of "Ω" to achieve a secondary sealing effect. The rubber sealing strip with a cross-section in the shape of "Ω" used in the outer sealing structure has a relatively large compression amount (deformation amount), which can compensate for the flatness deviation of the "mouth"-shaped funnel mouth and the flatness of the bottom door plate.

Claims

1. A double-sealed unloading port for transporting railway hopper cars, characterized in that, The discharge port body forming the "mouth" structure includes two transversely arranged end funnel assemblies (1), a first side funnel assembly (2) connecting the side edges of the two end funnel assemblies (1), and a second side funnel assembly (3) connecting the other side edges of the two end funnel assemblies (1). An inner layer sealing structure is arranged on the inner side of the opening of the first side funnel assembly (2) and the second side funnel assembly (3); an outer layer sealing structure is arranged on the outer side of the opening of each of the end funnel assembly (1), the first side funnel assembly (2) and the second side funnel assembly (3) by inlaying, and the lowest position of the inner layer sealing structure is lower than that of the outer layer sealing structure. The end funnel assembly (1) includes an end funnel plate (1.1), a transverse reinforcing beam (1.2), a transverse pressing strip (1.3) and a transverse sealing strip (1.4). The end funnel plate (1.1) is connected with the first side funnel assembly (2) and the second side funnel assembly (3) on both sides, and the transverse reinforcing beam (1.2) is arranged on the outer side of the opening of the end funnel plate (1.1) in a transverse manner; the transverse reinforcing beam (1.2) is provided with screw holes at the bottom for mounting the transverse pressing strip (1.3), the bottom lower surface of the transverse pressing strip (1.3) is provided with a transverse groove, and the transverse sealing strip (1.4) is mounted in the transverse groove through a mounting portion. The first side funnel assembly (2) includes a first side end funnel plate (2.1), a first pressing plate (2.2), a first longitudinal sealing plate (2.3), a first longitudinal sealing strip (2.4), a first pressing strip (2.5), a first longitudinal reinforcing beam (2.6), a first sealing plate (2.7) and a first mounting plate (2.8). The first mounting plate (2.8) is fixed to the outer side of the first side end funnel plate (2.1) through a mounting hole, the first pressing plate (2.2) and the first longitudinal sealing plate (2.3) are fixed to the inner side of the first side end funnel plate (2.1) through mounting holes, the first pressing plate (2.2) is used for pressing the first longitudinal sealing plate (2.3), the mounting holes of the first side end funnel plate (2.1), the first mounting plate (2.8), the first pressing plate (2.2) and the first longitudinal sealing plate (2.3) are centrally aligned, and the four are locked by a bolt assembly. The first longitudinal reinforcing beam (2.6) is provided in a groove type structure on the outer side of the first side end funnel plate (2.1), and the two ends of the first longitudinal reinforcing beam (2.6) are sealed by two first sealing plates (2.7); the bottom of the first longitudinal reinforcing beam (2.6) is uniformly provided with screw holes for mounting the first pressing strip (2.5), the bottom lower surface of the first pressing strip (2.5) is provided with a first longitudinal groove, and the first longitudinal sealing strip (2.4) is mounted in the first longitudinal groove through a mounting portion.

2. The double-sealed dump door of a railcar hopper car of claim 1, wherein, The inner layer sealing structure is a broken line rubber sealing plate, and the cross-sectional angle of the broken line rubber sealing plate is greater than 90°.

3. The double-sealed dump door of a railcar hopper car of claim 2, wherein, The outer layer sealing structure is a rubber sealing strip with an "Ω" shaped cross section.

4. The double-sealed dump door of a railcar hopper car of claim 3, wherein, The transverse sealing strip (1.4) is an outer layer sealing structure, and the transverse sealing strip (1.4) is a rubber sealing strip with an "Ω" shaped cross section.

5. The double-sealed dump door for a railcar hopper according to claim 4, wherein, The first longitudinal sealing plate (2.3) is an inner layer sealing structure, and the first longitudinal sealing plate (2.3) is a 120° broken line shaped rubber sealing plate. The first longitudinal sealing strip (2.4) is an outer layer sealing structure, and the first longitudinal sealing strip (2.4) is a rubber sealing strip with an "Ω" shaped cross section.

6. The double-sealed dump door of a railcar hopper car of claim 3, wherein, The second side funnel assembly (3) comprises a second side end funnel plate (3.1), a second pressing plate (3.2), a second longitudinal sealing plate (3.3), a second longitudinal sealing strip (3.4), a second pressing strip (3.5), a second longitudinal reinforcing beam (3.6), a second sealing plate (3.7), a second reinforcing column (3.8), and a second mounting plate (3.9). The second mounting plate (3.9) is fixed to the outside of the second side end funnel plate (3.1) through a mounting hole, the second pressing plate (3.2) and the second longitudinal sealing plate (3.3) are fixed to the inside of the second side end funnel plate (3.1) through mounting holes, the second pressing plate (3.2) is used for pressing the second longitudinal sealing plate (3.3), the mounting holes of the second side end funnel plate (3.1), the second mounting plate (3.9), the second pressing plate (3.2), and the second longitudinal sealing plate (3.3) are centrally aligned, and the four are locked through a bolt assembly. The second longitudinal reinforcing beam (3.6) is provided outside the second side end funnel plate (3.1) in a groove type structure, the second longitudinal reinforcing beam (3.6) is uniformly provided with screw holes at the bottom for mounting the second pressing strip (3.5), the second pressing strip (3.5) is provided with a second longitudinal groove at the bottom lower surface, and the second longitudinal sealing strip (3.4) is mounted in the second longitudinal groove through a mounting portion.

7. The double-sealed dump door of a railcar hopper car of claim 6, wherein, The second reinforcing column (3.8) is fixed with the second side end funnel plate (3.1), the second reinforcing column (3.8) is provided outside the second side end funnel plate (3.1) in an L-shaped structure and is fixed with the second longitudinal reinforcing beam (3.6), and the two ends of the second longitudinal reinforcing beam (3.6) and the second reinforcing column (3.8) are sealed by two second sealing plates (3.7).

8. The double-sealed dump door of a railcar hopper car of claim 6, wherein, The second longitudinal sealing plate (3.3) is an inner layer sealing structure, and the second longitudinal sealing plate (3.3) is a 120° broken line shaped rubber sealing plate. The second longitudinal sealing strip (3.4) is an outer layer sealing structure, and the second longitudinal sealing strip (3.4) is a rubber sealing strip with an "Ω" shaped cross section.

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