Detachable connecting device for tank body and underframe of railway tank car

Abstract

The invention discloses a detachable connecting device for a tank body and an underframe of a railway tank car, which relates to the technical field of railway tank cars and comprises two saddle assemblies arranged at two ends of the underframe and used for bearing and locking the tank body and a plurality of saddle plate assemblies arranged between the two saddle assemblies. All the saddle assemblies and all the saddle plate assemblies are arranged at the bottom of the tank body in a welding mode, and all the saddle assemblies and all the saddle plate assemblies are detachably connected to the bottom frame. The detachable and maintainable design concept is adopted, the tank body and the bottom frame of the tank car can be reliably connected and fixed through the connecting device, and manufacturing and maintaining are convenient; meanwhile, when other goods need to be transported, the connecting device can be detached, then the tank body is detached, the tank car is used as a common flatcar, the vehicle transportation range is expanded, and then the transportation economy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of railway tank car, more particularly to the technical field of detachable connecting device of railway tank car tank body and underframe. BACKGROUND

[0002] Railway tank car has become the core carrier for long-distance transportation of various liquids due to its large capacity, low cost and high safety. For railway tank cars with a through middle beam, the tank body and the underframe are usually connected by pull belts at both ends of the tank body and upper and lower saddle bolts at the middle part of the tank body to withstand the longitudinal impact force, traction force and inertial force generated during train operation, shunting operation, starting and braking, and prevent relative displacement or disengagement of the tank body and the underframe.

[0003] The pull belts are in a cycle of "stretching-relaxing" for a long time, and are prone to fatigue fracture under alternating stress. At the same time, the railway tank car operates in a complex environment and is exposed to wind, rain, snow and the corrosion of some chemical vapors all year round, so the pull belts are prone to corrosion. Corrosion can significantly reduce the effective cross-sectional area and strength of the pull belts, accelerate the fatigue process, and even cause the tank body to disengage, medium leakage and other serious consequences.

[0004] How to effectively improve the pull belt connection method between the tank body and the underframe of the existing railway tank car to solve the problems of rust, deformation and cracking of the pull belt and improve the maintainability and transportation safety of the vehicle has become a technical problem to be solved by those skilled in the art. SUMMARY

[0005] The present application aims to solve the above technical problems by providing a detachable connecting device of a railway tank car tank body and underframe.

[0006] The present application specifically adopts the following technical solutions to achieve the above-mentioned purposes: The present application provides a detachable connecting device of a railway tank car tank body and underframe, which comprises two saddle assemblies for bearing and locking the tank body arranged at both ends of the underframe and a plurality of saddle plates arranged between the two saddle assemblies; each saddle assembly and each saddle plate are arranged at the bottom of the tank body by welding, and each saddle assembly and each saddle plate are connected to the underframe by a detachable method.

[0007] In one embodiment, the two saddle assemblies are symmetrically arranged at the left and right ends below the tank body along the longitudinal direction of the underframe, and the two saddle assemblies are fixedly installed on the underframe by a first fastening device.

[0008] In one embodiment, all the saddle plate assemblies are symmetrically arranged on the left and right sides of the middle part of the tank body along the longitudinal direction of the underframe, and the number of saddle plate assemblies is four on each side, and each saddle plate assembly is fixedly installed on the underframe by a second fastening device.

[0009] In one embodiment, the saddle assembly comprises an upper saddle plate and a lower saddle plate; The upper saddle plate is installed below the tank body and has an irregular arc shape. The upper saddle plate comprises an upper wing edge and a lower wing edge. The upper wing edge is fitted to the lower arc surface of the tank body, and the lower wing edge is fitted to the end wing edge of the lower saddle plate, and a plurality of fastening holes are provided. The lower saddle plate is installed on the middle beam of the chassis and has a bowl shape. The end wing edge of the lower saddle plate is fitted to the lower wing edge of the upper saddle plate, and a plurality of fastening holes are provided on the end wing edge of the lower saddle plate. The second fastening device comprises fastening bolts, which connect and fix the saddle assembly and the chassis through the fastening holes on the upper saddle plate and the fastening holes on the lower saddle plate.

[0010] In one embodiment, the saddle assembly comprises an upper cover plate, a lower cover plate arranged below the upper cover plate, a plurality of rib plates arranged between the upper cover plate and the lower cover plate, and two support columns arranged on both sides of all the rib plates. The upper cover plate is used to support the tank body, and each support column is vertically arranged with both ends welded to the upper cover plate and the lower cover plate.

[0011] In one embodiment, a web plate is connected between adjacent two rib plates and between each support column and adjacent rib plate for increasing strength. The rib plates are parallel to the longitudinal direction of the chassis, and each web plate is orthogonal to the longitudinal direction of the chassis.

[0012] In one embodiment, the upper cover plate is an arc-shaped plate with an upward opening. The curvature of the upper cover plate is matched with the corresponding tank body, and the upper surface of the upper cover plate is fitted to the tank body.

[0013] The lower cover plate is a horizontal plate fixed on the chassis.

[0014] The lower cover plate is fitted to the pillow beam on the chassis, and the lower cover plate is arranged in a flat shape on the pillow beam. The lower cover plate is locked on the pillow beam by the first fastening device.

[0015] In one embodiment, the saddle assembly is formed by group welding between the upper cover plate, the lower cover plate, all the rib plates, all the web plates, and the two support columns.

[0016] Specifically, the load borne by the tank body is supported and transmitted, and the connection and fixation of the tank body and the chassis are achieved by fixing the saddle assembly.

[0017] In one embodiment, the first fastening device comprises a pressing plate, a limiting groove, and a fastener. The limiting groove is concave and is welded on the pillow beam along the longitudinal direction of the chassis. The inner plane height of the limiting groove is consistent with the thickness of the lower cover plate, and the length of the limiting groove is consistent with the lower cover plate. The pressing plate has an inverted U shape. The pressing plate has a fastening hole in the middle. The pressing plate is fixed on the saddle assembly and the chassis by the fastener, and one straight edge of the pressing plate is in contact with the lower cover plate, and the other straight edge of the pressing plate is arranged in the limiting groove.

[0018] The beneficial effects of this invention are as follows: 1. This invention adopts a detachable and maintainable design concept. The tank body and the underframe of the tank truck can be reliably connected and fixed through the connecting device provided by this invention, which facilitates manufacturing and maintenance. At the same time, when other goods need to be transported, the connecting device provided by this invention can be removed, and the tank body can be disassembled to use the tank truck as an ordinary flatcar, thereby expanding the vehicle's transportation range and improving transportation economy.

[0019] 2. The limiting groove limits the lateral movement of the pressure plate; the fasteners connect and fix the pressure plate and the base frame through the fastening holes on the pressure plate and the fastening holes on the cover plate of the base frame pillow beam.

[0020] 3. By removing the first and second fastening devices, the tank body can be disassembled, converting the tank car into a regular flatcar for transporting other suitable goods; by reinstalling the first and second fastening devices and assembling the underframe to the tank body, the regular flatcar can be restored to its original function as a tank car. The connection device in this solution has a simple and reliable structure, is easy to operate, and can ensure the long-term, safe, and economical operation of railway tank cars, enabling multi-purpose use of the vehicles. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure in this invention that connects the tank body of a railway tank car to the underframe via a detachable connecting device; Figure 2 This is a schematic diagram of the saddle assembly in this invention; Figure 3 This is a schematic diagram of the structure of the first fastening device in this invention; Figure 4 This is a schematic diagram of the structure of the saddle plate in this invention; Figure 5 This is a schematic diagram of the ordinary flatcar structure after the connecting device has been removed in this invention; Reference numerals in the attached drawings: 1. Saddle assembly; 2. First fastening device; 3. Saddle plate assembly; 4. Second fastening device; 5. Base frame; 6. Tank body; 11. Upper cover plate; 12. Lower cover plate; 13. Rib plate; 14. Web plate; 15. Support column; 21. Pressure plate; 22. Limiting groove; 23. Fastener; 31. Upper saddle plate; 32. Lower saddle plate; 51. Pillar beam; 52. Middle beam. Detailed Implementation

[0023] To make the technical problems, technical solutions, and technical effects of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0027] Example 1 like Figures 1 to 5 As shown, this embodiment provides a detachable connection device between the tank body and the underframe of a railway tank car, including two saddle assemblies 1 for supporting and locking the tank body 6 at both ends of the underframe 5, and multiple saddle plate assemblies 3 between the two saddle assemblies 1; each saddle assembly 1 and each saddle plate assembly 3 are detachably connected to the underframe; each saddle assembly 1 and each saddle plate assembly 3 are welded to the bottom of the tank body 6.

[0028] Example 2 like Figures 1 to 5 As shown, this embodiment provides a detachable connection device between the tank body and the underframe of a railway tank car, including two saddle assemblies 1 for supporting and locking the tank body 6 at both ends of the underframe 5, and multiple saddle plate assemblies 3 between the two saddle assemblies 1; each saddle assembly 1 and each saddle plate assembly 3 are detachably connected to the underframe; each saddle assembly 1 and each saddle plate assembly 3 are welded to the bottom of the tank body 6.

[0029] Two saddle components 1 are symmetrically arranged at the left and right ends below the tank body 6 along the longitudinal direction of the base frame 5. The two saddle components 1 are fixedly installed on the base frame 5 by the first fastening device 2.

[0030] All saddle plate components 3 are symmetrically arranged on the left and right sides of the middle part of the tank body 6 along the longitudinal direction of the base frame 5. There are four sets of saddle plate components 3 on each side, and each saddle plate component 3 is fixedly installed on the base frame 5 by the second fastening device 4.

[0031] Saddle plate component 3 includes an upper saddle plate 31 and a lower saddle plate 32; The upper saddle plate 31 is installed below the tank body 6 and has an irregular arc shape. The upper saddle plate 31 includes an upper wing edge and a lower wing edge. The upper wing edge fits against the lower arc surface of the tank body 6, and the lower wing edge fits against the end wing edge of the lower saddle plate 32. Several fastening holes are provided. The lower saddle plate 32 is installed on the middle beam 52 of the base frame 5. It is shaped like a cup. The end flange of the lower saddle plate 32 fits against the lower flange of the upper saddle plate 31. Several fastening holes are provided on the end flange of the lower saddle plate 32. The second fastening device 4 includes fastening bolts, which connect and fix the saddle plate assembly 3 and the base frame 5 through fastening holes on the upper saddle plate 31 and the lower saddle plate 32.

[0032] Example 3 This embodiment is a further optimization based on embodiment 2, specifically: The saddle assembly 1 includes an upper cover plate 11, a lower cover plate 12 located below the upper cover plate 11, multiple stiffening plates 13 located between the upper cover plate 11 and the lower cover plate 12, and two support columns 15 located on both sides of all the stiffening plates 13; the upper cover plate 11 is used to support the tank body 6, and each support column 15 is vertically arranged with its two ends welded to the upper cover plate 11 and the lower cover plate 12 respectively.

[0033] A web 14 for increasing strength is connected between two adjacent stiffening plates 13 and between each support column 15 and the adjacent stiffening plate 13. The stiffening plate 13 is parallel to the longitudinal direction of the base frame 5, and each web plate 14 is orthogonal to the longitudinal direction of the base frame 5.

[0034] The upper cover plate 11 is an arc-shaped plate with an upward opening. The curvature of the upper cover plate 11 is adapted to the corresponding tank body 6, and the upper surface of the upper cover plate 11 is in contact with the tank body 6.

[0035] The lower cover plate 12 is a horizontal plate fixed on the base frame 5.

[0036] The lower cover plate 12 is attached to the pillow beam 51 on the base frame 5, and the lower cover plate 12 is set flat on the pillow beam 51. The lower cover plate 12 is locked to the pillow beam 51 by the first fastening device 2.

[0037] In one embodiment, the upper cover plate 11, the lower cover plate 12, all stiffening plates 13, all web plates 14 and the two pillars 15 are welded together to form a saddle assembly 1.

[0038] Specifically, it supports and transmits the load on the tank 6, and at the same time, it connects and fixes the tank 6 to the base frame 5 through the fixed saddle assembly 1.

[0039] Example 4 This embodiment is a further optimization based on embodiment 3, specifically: The first fastening device 2 includes a pressure plate 21, a limiting groove 22, and a fastener 23. The limiting groove 22 is concave and is welded to the pillow beam 51 along the longitudinal direction of the base frame 5. The height of the inner plane of the limiting groove 22 is the same as the thickness of the lower cover plate 12, and the length of the limiting groove 22 is the same as that of the lower cover plate 12. The pressure plate 21 is in the shape of an inverted U. A fastening hole is provided in the middle of the pressure plate 21. The pressure plate 21 is fixed to the saddle assembly 1 and the base frame 5 by fasteners 23. One straight edge of the pressure plate 21 is in contact with and fixed to the lower cover plate 12, and the other straight edge of the pressure plate 21 is set in the limiting groove 22.

[0040] Specifically, such as Figure 3 As shown, the limiting groove 22 limits the lateral movement of the pressure plate 21; the fastener 23 connects and fixes the pressure plate 21 and the base frame 5 through the fastening holes on the pressure plate 21 and the fastening holes on the cover plate 11 of the base frame 5 pillow beam 51.

[0041] Specifically, such as Figure 5 As shown, by removing the first fastening device 2 and the second fastening device 4, the tank body 6 can be disassembled, converting the tank car into a regular flatcar for transporting other suitable goods; by reinstalling the first fastening device 2 and the second fastening device 4, the underframe 5 can be assembled and connected to the tank body 6, and the regular flatcar can be restored to its function as a tank car. The connection device of this scheme has a simple and reliable structure, is easy to operate, and can ensure the long-term, safe, and economical operation of railway tank cars, realizing the multi-purpose use of the vehicles.

Claims

1. A detachable connection device between the tank body and the underframe of a railway tank car, characterized in that, It includes two saddle assemblies (1) for supporting and locking the tank body (6) at both ends of the base frame (5) and a plurality of saddle plate assemblies (3) between the two saddle assemblies (1); each saddle assembly (1) and each saddle plate assembly (3) is set at the bottom of the tank body (6) by welding, and each saddle assembly (1) and each saddle plate assembly (3) is detachably connected to the base frame.

2. The detachable connection device between the tank body and the underframe of a railway tank car according to claim 1, characterized in that, The two saddle components (1) are symmetrically arranged at the left and right ends below the tank body (6) along the longitudinal direction of the base frame (5), and the two saddle components (1) are fixedly installed on the base frame (5) by the first fastening device (2).

3. The detachable connection device between the tank body and the underframe of a railway tank car according to claim 1, characterized in that, All the saddle plate components (3) are symmetrically arranged on the left and right sides of the middle part of the tank body (6) along the longitudinal direction of the base frame (5). There are four sets of saddle plate components (3) on each side. Each saddle plate component (3) is fixedly installed on the base frame (5) by the second fastening device (4).

4. The detachable connection device between the tank body and the underframe of a railway tank car according to claim 3, characterized in that, The saddle plate assembly (3) includes an upper saddle plate (31) and a lower saddle plate (32); The upper saddle plate (31) is installed below the tank body (6) and has an irregular arc shape. The upper saddle plate (31) includes an upper wing edge and a lower wing edge. The upper wing edge is in contact with the lower arc surface of the tank body (6), and the lower wing edge is in contact with the end wing edge of the lower saddle plate (32). Several fastening holes are provided. The lower saddle plate (32) is installed on the middle beam (52) of the base frame (5), and is shaped like a lid. The end flange of the lower saddle plate (32) is in contact with the lower flange of the upper saddle plate (31). Several fastening holes are provided on the end flange of the lower saddle plate (32). The second fastening device (4) includes fastening bolts, which connect and fix the saddle plate assembly (3) and the base frame (5) through fastening holes on the upper saddle plate (31) and the lower saddle plate (32).

5. A detachable connection device for the tank body and underframe of a railway tank car according to claim 2, characterized in that, The saddle assembly (1) includes an upper cover plate (11), a lower cover plate (12) disposed below the upper cover plate (11), multiple stiffening plates (13) disposed between the upper cover plate (11) and the lower cover plate (12), and two support columns (15) disposed on both sides of all the stiffening plates (13); the upper cover plate (11) is used to support the tank body (6), and each of the support columns (15) is vertically disposed with its two ends welded to the upper cover plate (11) and the lower cover plate (12) respectively.

6. A detachable connection device for the tank body and underframe of a railway tank car according to claim 5, characterized in that, A web plate (14) for increasing strength is connected between two adjacent stiffening plates (13) and between each of the supports (15) and the adjacent stiffening plates (13). The stiffening plate (13) is parallel to the longitudinal direction of the base frame (5), and each of the web plates (14) is orthogonal to the longitudinal direction of the base frame (5).

7. A detachable connection device for the tank body and underframe of a railway tank car according to claim 5, characterized in that, The upper cover plate (11) is an arc-shaped plate with an upward opening. The curvature of the upper cover plate (11) is adapted to the corresponding tank body (6). The upper surface of the upper cover plate (11) is in contact with the tank body (6). The lower cover plate (12) is a horizontal plate fixed on the base frame (5).

8. A detachable connection device for the tank body and underframe of a railway tank car according to claim 5, characterized in that, The lower cover plate (12) is attached to the pillow beam (51) on the base frame (5), and the lower cover plate (12) is set on the pillow beam (51) in a straight position. The lower cover plate (12) is locked on the pillow beam (51) by the first fastening device (2).

9. A detachable connection device for the tank body and underframe of a railway tank car according to claim 8, characterized in that, The upper cover plate (11), the lower cover plate (12), all the stiffening plates (13), all the web plates (14) and the two pillars (15) are welded together to form a saddle assembly (1).

10. A detachable connection device for the tank body and underframe of a railway tank car according to claim 9, characterized in that, The first fastening device (2) includes a pressure plate (21), a limiting groove (22), and a fastener (23); the limiting groove (22) is concave and is welded to the pillow beam (51) along the longitudinal direction of the base frame (5); the height of the inner plane of the limiting groove (22) is consistent with the thickness of the lower cover plate (12); and the length of the limiting groove (22) is consistent with the lower cover plate (12). The pressure plate (21) is in the shape of an inverted U. The pressure plate (21) has a fastening hole in the middle. The pressure plate (21) is fixed to the saddle assembly (1) and the base frame (5) by fasteners (23). One straight edge of the pressure plate (21) is in contact with the lower cover plate (12) and fixed. The other straight edge of the pressure plate (21) is set in the limiting groove (22).

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