Double-layer sealing unloading opening of transport railway hopper car

Abstract

The invention discloses a double-layer sealing unloading opening of a transport railway hopper car, and relates to the technical field of hopper cars. Comprising two end funnel assemblies which are transversely arranged, a first side funnel assembly which is connected between the edges of one sides of the two end funnel assemblies, and a second side funnel assembly which is connected between the edges of the other sides of the two end funnel assemblies. Inner-layer sealing structures are arranged on the inner sides of openings below the first side funnel assembly and the second side funnel assembly; outer layer sealing structures are arranged on the outer sides of the lower openings of the end funnel plate assemblies, the first side funnel assembly and the second side funnel assembly in an embedded mode, and the lowest position of the inner layer sealing structure is lower than the lowest position of the outer layer sealing structure. When the bottom door plate makes contact with the funnel opening, the layer sealing structure is firstly extruded, then the outer layer sealing structure is extruded, and the four corners of the frame extrude the outer layer sealing structure to eliminate gaps at the connecting positions, so that the sealing effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of hopper cars, and more specifically to the technical field of double-layer sealed unloading openings for railway hopper cars for transportation. Background Art

[0002] The hopper car for railway transportation is of a bottom-opening type. Usually, a bottom door is provided at the bottom of the vehicle, and the bottom door is opened and closed to achieve the purpose of unloading. In order to prevent the goods from leaking from the bottom door during transportation, a bottom door with a sealing function is usually used. However, at present, the sealing of the bottom door of hopper cars in China is mainly for granular goods such as grain (non-powdery), ore, coal, ballast, etc. When transporting the above goods, considering the particle size of the goods, a certain gap is usually left when sealing the bottom door to ensure the flexible movement of the bottom door. However, this structure cannot meet the sealing requirements for transporting powdery goods.

[0003] Due to the limitations of the relatively large size of the hopper opening and the bottom door and the manufacturing process, the flatness of the "mouth"-shaped hopper opening and the flatness of the bottom door panel are out of tolerance, resulting in poor sealing effect when the two are used in combination. Therefore, when transporting fine-grained powdery goods, if only the first-layer sealing structure is adopted, it may cause the leakage of goods.

[0004] Therefore, it is necessary to study a new sealing structure that can meet the sealing requirements for fine-grained powdery goods to ensure reliable sealing performance during vehicle operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a double-layer sealed unloading opening for a railway hopper car for transportation to solve the technical problem of poor sealing effect caused by the out-of-tolerance flatness of the "mouth"-shaped hopper opening and the flatness of the bottom door panel when the two are used in combination.

[0006] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0007] The present invention provides a double-layer sealed unloading opening for a railway hopper car for transportation, which includes a discharge port main body forming a "mouth" structure. The discharge port main body includes two end hopper components arranged horizontally, a first side hopper component connecting the one-side edges of the two end hopper components, and a second side hopper component connecting the other-side edges of the two end hopper components.

[0008] Inner layer sealing structures are arranged on the inner sides of the openings below the first side hopper component and the second side hopper component; outer layer sealing structures are arranged on the outer sides of the openings below each end hopper plate component, the first side hopper component, and the second side hopper component 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, when the bottom door panel contacts the funnel mouth, the first sealing structure is squeezed, and then the outer sealing structure is squeezed. The four corners of the frame eliminate the gaps at the connection due to the squeezing of the outer sealing structure, thereby achieving a sealing effect.

[0010] In one embodiment, the inner sealing structure is a zigzag rubber sealing plate, and the cross-sectional angle of the zigzag rubber sealing plate is greater than 90°.

[0011] In one embodiment, the outer sealing structure is a rubber sealing strip with an "Ω"-shaped cross section.

[0012] In one embodiment, the end funnel plate assembly includes an end funnel plate, a transverse reinforcing beam, a transverse pressure strip, and a transverse sealing strip;

[0013] The two sides of the end funnel plate are respectively connected to the first side funnel assembly and the second side funnel assembly, and the transverse reinforcement beam is transversely arranged on the outside of the opening below the end funnel plate; a threaded hole for installing the transverse pressure strip is arranged at the bottom of the transverse reinforcement beam, and a transverse groove is arranged on the lower surface of the bottom of the transverse pressure strip, and the transverse sealing strip is installed in the transverse groove through the installation part.

[0014] In one embodiment, the transverse sealing strip is an outer sealing structure, and the transverse sealing strip is a rubber sealing strip with an "Ω"-shaped cross section.

[0015] In one embodiment, the first side funnel assembly includes 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 outer side 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 inner side 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 centrally aligned, and the four are locked by a bolt assembly;

[0017] The first longitudinal reinforcing beam is a groove-shaped structure arranged on the outer side of the first side end funnel plate, and the two ends of the first longitudinal reinforcing beam are sealed by two first sealing plates to prevent rainwater and other debris from entering; threaded holes for installing the first mounting strip are evenly arranged at the bottom of the first longitudinal reinforcing beam, and a first longitudinal groove is opened on the lower surface of the bottom of the first mounting strip, and the first longitudinal sealing strip is installed in the first longitudinal groove through the mounting part.

[0018] In one embodiment, the first longitudinal sealing plate is an inner sealing structure, and the first longitudinal sealing plate is a zigzag rubber sealing plate with a cross section of 120°;

[0019] The first longitudinal sealing strip is an outer sealing structure, and the first longitudinal sealing strip is a rubber sealing strip with an "Ω"-shaped cross section.

[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 to the outer side of the second side end funnel plate through the mounting holes, the second pressing plate and the second longitudinal sealing plate are fixed to the inner side of the second side end funnel plate through the mounting holes, 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 all centrally aligned, and the four are locked by a bolt assembly;

[0022] The second longitudinal reinforcing beam is a groove-shaped structure arranged on the outer side of the second side end funnel plate, and threaded holes for installing the second mounting strip are evenly arranged at the bottom of the second longitudinal reinforcing beam. A second longitudinal groove is opened on the lower surface of the bottom of the second mounting strip, and the second longitudinal sealing strip is installed in the second longitudinal groove through the mounting part.

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

[0024] In one embodiment, the second longitudinal sealing plate is an inner sealing structure, and the second longitudinal sealing plate is a zigzag rubber sealing plate with a cross section of 120°;

[0025] The second longitudinal sealing strip is an outer sealing structure, and the second longitudinal sealing strip is a rubber sealing strip with an "Ω"-shaped cross section.

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

[0027] 1. It adopts a double-layer sealing structure in the shape of a U-shaped inner and outer layer. When the door panel contacts the funnel mouth, the first sealing structure is squeezed, and then the outer sealing structure is squeezed. The four corners of the frame eliminate the gap at the connection due to the squeezing of the outer sealing structure to achieve a sealing effect. It can not only meet the sealing requirements of bulk cargo transportation, but also meet the sealing requirements of fine-grained powder cargo transportation.

[0028] 2. Adopt a double-layer rubber sealing structure, which meets the existing assembly process and reduces the matching accuracy of each component at the unloading port caused by process manufacturing errors.

[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 reduces labor intensity.

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

[0031] 5. The specific outer sealing structure of the present invention is as follows: First, a metal mounting plate with a "concave" cross-section and threaded mounting holes prefabricated on the bottom surface is fixed to an appropriate position on the edge of the funnel opening, and then a rubber sealing strip with a "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 a "Ω" cross-section to achieve a secondary sealing effect.

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

[0033] 7. Adopting the aforementioned double-layer sealing structure can completely solve the problem of poor sealing effect when the "square" funnel opening and the bottom door panel are used in combination due to the out-of-flatness of the "square" funnel opening and the out-of-flatness of the bottom door panel. 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 for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, so they 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 diagram of the end funnel assembly structure;

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

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

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

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

[0043] Reference numerals: 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 pressure 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 pressure plate, 3.3 - second longitudinal sealing plate, 3.4 - second longitudinal sealing strip, 3.5 - second pressure 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 invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0050] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] Example 1

[0052] like Figures 1 to 8 As shown, this embodiment provides a double-layer sealed unloading port of a transport railway hopper car, including a unloading port main body forming a "mouth" structure, the unloading port main body including two end funnel assemblies 1 arranged horizontally, a first side funnel assembly 2 connecting one side edge 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.

[0053] An inner sealing structure is arranged on the inner side of the opening 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 arranged on the outer side of the opening 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 in an inlaid form, and the lowest position of the inner sealing structure is lower than the lowest position of the outer sealing structure.

[0054] Specifically, when the bottom door panel contacts the funnel mouth, the first sealing structure is squeezed, and then the outer sealing structure is squeezed. The four corners of the frame eliminate the gaps at the connection due to the squeezing of the outer sealing structure, thereby achieving a sealing effect.

[0055] Example 2

[0056] like Figures 1 to 8 As shown, this embodiment provides a double-layer sealed unloading port of a transport railway hopper car, including a unloading port main body forming a "mouth" structure, the unloading port main body including two end funnel assemblies 1 arranged horizontally, a first side funnel assembly 2 connecting one side edge 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.

[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 inlay 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 broken-line rubber sealing plate, and the cross-sectional angle of the broken-line 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, which includes 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 edges of one side of the two end funnel assemblies 1, and a second side funnel assembly 3 connecting the edges of the other side of the two end funnel assemblies 1.

[0062] The end funnel plate 1.1 assembly 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;

[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 transverse 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 transverse pressing strip 1.3 are provided at the bottom of the transverse reinforcing beam 1.2, a transverse groove is opened on the lower surface of the bottom of the transverse pressing strip 1.3, and the transverse sealing strip 1.4 is installed in the transverse groove through the installation part.

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

[0065] 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, Figure 5 to Figure 6 As shown, this embodiment provides a double-layer sealed unloading port of a transport railway hopper car, including a unloading port main body forming a "mouth" structure, the unloading port main body including two end funnel assemblies 1 arranged horizontally, a first side funnel assembly 2 connecting one side edge 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.

[0068] The first side end funnel plate 2.1 assembly comprises 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;

[0069] The first mounting plate 2.8 is fixed to the outer side of the first side end funnel plate 2.1 through the mounting holes, 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 the 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 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 all centrally aligned, and the four are locked by a bolt assembly;

[0070] The first longitudinal reinforcing beam 2.6 is in a groove-shaped structure and is arranged on the outer side of the first side end funnel 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 rainwater and other debris from entering; threaded holes for installing the first mounting strip are evenly arranged at the bottom of the first longitudinal reinforcing beam 2.6, and a first longitudinal groove is opened on the lower surface of the bottom of the first mounting strip. The first longitudinal sealing strip 2.4 is installed in the first longitudinal groove through the mounting part.

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

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

[0073] In this embodiment, the inner sealing structure is specifically as follows: a metal pressure plate prefabricated with threaded mounting holes and a zigzag-shaped (cross section greater than 90°, 120° is the best choice) rubber sealing plate prefabricated with mounting through holes are bolted to an 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 plate first squeezes the zigzag-shaped rubber sealing plate to achieve a primary sealing effect.

[0074] The outer sealing structure is specifically as follows: First, fix a metal mounting plate with a "concave" cross-section and prefabricated threaded mounting holes on the bottom at an appropriate position on the edge of the hopper opening. Then, embed a rubber sealing strip with a "Ω" cross-section into 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 "Ω" cross-section to achieve a secondary sealing effect. The rubber sealing strip with a "Ω" cross-section used in the outer sealing structure has a relatively large compression amount (deformation amount), which can compensate for the out-of-tolerance flatness of the "square" hopper opening and the bottom door panel.

[0075] Embodiment 4

[0076] As Figures 1 to 3 、 Figures 7 and 8 shown, this embodiment provides a double-sealed unloading opening for a railway hopper car for transportation, including a discharge opening main body forming a "square" structure. The discharge opening main body includes two end hopper assemblies 1 arranged horizontally, a first side hopper assembly 2 connecting the 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.

[0077] The second side end hopper plate 3.1 assembly includes a second side end hopper 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 outside of the second side end hopper plate 3.1 through mounting holes. The second pressing plate 3.2 and the second longitudinal sealing plate 3.3 are fixed to the inside of the second side end hopper 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 hopper 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 centered and aligned, and the four are locked by a bolt assembly;

[0079] The second longitudinal reinforcing beam 3.6 is arranged in a groove structure on the outside of the second side end hopper plate 3.1. Threaded holes for installing the second mounting pressing strip are evenly arranged at the bottom of the second longitudinal reinforcing beam 3.6. A second longitudinal groove is opened on the bottom surface of the second mounting pressing strip. The second longitudinal sealing strip 3.4 is installed in the second longitudinal groove through the installation part.

[0080] The second reinforcing column 3.8 is fixed to the second side end hopper plate 3.1. The second reinforcing column 3.8 is arranged in an L-shaped structure on the outside of the second side end hopper plate 3.1 and is fixed to the second longitudinal reinforcing beam 3.6. Both 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 to prevent rainwater and other sundries 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 (the cross-section is greater than 90°, and when the cross-section is 120°, it 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 panel 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 surface to 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 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-flatness of the "mouth"-shaped funnel mouth and the out-of-flatness of the bottom door panel.

Claims

1. A double-layer sealed unloading port of a transport railway hopper car, characterized in that: The material discharging port body comprises a "mouth"-shaped structure, wherein the material discharging port body comprises two end funnel assemblies (1) arranged in a transverse manner, a first side funnel assembly (2) connecting one side edge 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 sealing structure is provided on the inner side of the lower opening of the first side funnel assembly (2) and the second side funnel assembly (3); an outer sealing structure is provided on the outer side of the lower opening of each end funnel plate assembly (1), the first side funnel assembly (2) and the second side funnel assembly (3) in an inlaid manner, and the lowest position of the inner sealing structure is lower than the lowest position of the outer sealing structure.

2. A double-layer sealed discharge port of a railway hopper car according to claim 1, characterized in that: The inner sealing structure is a zigzag rubber sealing plate, and the cross-sectional angle of the zigzag rubber sealing plate is greater than 90°.

3. A double-layer sealed discharge port of a transport railway hopper car according to claim 2, characterized in that: The outer sealing structure is a rubber sealing strip with an "Ω"-shaped cross section.

4. A double-layer sealed discharge port of a transport railway hopper car according to claim 3, characterized in that: The end funnel plate assembly (1) comprises an end funnel plate (1.1), a transverse reinforcing beam (1.2), a transverse pressure strip (1.3) and a transverse sealing strip (1.4); The two sides of the end funnel plate (1.1) are respectively connected to the first side funnel assembly (2) and the second side funnel assembly (3); the transverse reinforcing beam (1.2) is transversely arranged outside the opening below the end funnel plate (1.1); a threaded hole for mounting the transverse pressure strip (1.3) is arranged at the bottom of the transverse reinforcing beam (1.2); a transverse groove is arranged on the lower surface of the bottom of the transverse pressure strip (1.3); and the transverse sealing strip (1.4) is mounted in the transverse groove through a mounting portion.

5. A double-layer sealed discharge port of a railway hopper car according to claim 4, characterized in that: The transverse sealing strip (1.4) is an outer sealing structure, and the transverse sealing strip (1.4) is a rubber sealing strip with an "Ω"-shaped cross section.

6. A double-layer sealed discharge port of a railway hopper car according to claim 4, characterized in that: The first side funnel assembly (2) comprises 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 the 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 the mounting hole, 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 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 all centrally aligned, and the four are locked by a bolt assembly; The first longitudinal reinforcing beam (2.6) is in a groove-shaped structure and is arranged on the outer side of the first side end funnel plate (2.1); the two ends of the first longitudinal reinforcing beam (2.6) are sealed by two first sealing plates (2.7); threaded holes for installing the first mounting pressure strip (2.5) are evenly arranged at the bottom of the first longitudinal reinforcing beam (2.6); a first longitudinal groove is opened on the lower surface of the bottom of the first mounting pressure strip (2.5); and the first longitudinal sealing strip (2.4) is installed in the first longitudinal groove through the installation portion.

7. A double-layer sealed discharge port of a railway hopper car according to claim 6, characterized in that: The first longitudinal sealing plate (2.3) is an inner sealing structure, and the first longitudinal sealing plate (2.3) is a broken-line rubber sealing plate with a cross section of 120°; 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.

8. The double-layer sealed discharge port of a railway hopper car according to claim 4, characterized in that: 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 outer side of the second side end funnel plate (3.1) through the mounting holes, 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 the 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 by a bolt assembly; The second longitudinal reinforcing beam (3.6) is in a groove-shaped structure and is arranged on the outer side of the second side end funnel plate (3.1); threaded holes for installing the second mounting strip are evenly arranged at the bottom of the second longitudinal reinforcing beam (3.6); a second longitudinal groove is formed on the lower surface of the bottom of the second mounting strip; and the second longitudinal sealing strip (3.4) is installed in the second longitudinal groove through the installation portion.

9. A double-layer sealed discharge port of a railway hopper car according to claim 8, characterized in that: The second reinforcing column (3.8) is fixed to the second side end funnel plate (3.1); the second reinforcing column (3.8) is arranged on the outside of the second side end funnel plate (3.1) in an L-shaped structure and is fixed to the second longitudinal reinforcing beam (3.6); both 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).

10. The double-layer sealed discharge port of a railway hopper car according to claim 8, characterized in that: The second longitudinal sealing plate (3.3) is an inner sealing structure, and the second longitudinal sealing plate (3.3) is a broken-line rubber sealing plate with a cross section of 120°; 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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