An overhung coupler mounting seat

Abstract

The application discloses an upper-mounted coupler mounting seat, which comprises a box body, a wing-shaped cover plate located above the box body and a coupler mounting plate fixed to the cover plate, the back of the box body is provided with a connecting plate for being fixed to the front vertical surface of a vehicle end beam, and the cover plate abuts against the connecting plate, so that the longitudinal force borne by the coupler mounting plate is transmitted to the vehicle end beam through the cover plate and the connecting plate. The upper-mounted coupler mounting seat is directly riveted on the surface of the vehicle end beam, the height of the mounting surface is reduced, the bending moment formed by the force transmitted to the vehicle body by the coupler is avoided, and the coupler installation under the special working condition that the installation height is too high is met. The longitudinal force of the vehicle body can be directly and smoothly transmitted to the underframe floor through the end beam, so that the coupler force can be better transmitted to the vehicle body, the stress is more uniform, and even under the condition of a larger coupler force, the situation that the local stress is too large is not prone to occur.

Description

Technical Field

[0001] This invention pertains to urban rail vehicle body structures, and specifically relates to an upper-mounted coupler mounting base. Background Technology

[0002] Currently, on rail vehicles, the coupler mounting base is an essential component for connecting vehicles. It is usually installed under the car body underframe, with one end connected to the coupler or drawbar and the other end connected to the car body traction beam. Therefore, it places high demands on the structural strength of the coupler mounting base. However, due to the large weight of the vehicle, the coupler mounting base also experiences a large traction force, resulting in significant stress.

[0003] Straddle-type monorail trains have advantages such as strong terrain adaptability, large climbing ability, small turning radius, and low cost. However, due to the height of the track beam and the passenger compartment floor, the coupler installation position cannot be set under the underframe. If the conventional coupler installation method is adopted, i.e., front-mounted or rear-mounted installation, the coupler installation surface acts on the underframe from the vertical plane, causing interference between the coupler and the track beam. This raises the floor surface at this point, and the coupler installation surface will also be higher than the floor surface, which will form a large bending moment. The force cannot be completely and evenly transmitted to the car body, resulting in excessive local stress. Summary of the Invention

[0004] In response to the problems in related technologies, this invention proposes an upper-mounted coupler mounting base to overcome the aforementioned technical problems in existing related technologies, meet the coupler installation requirements for excessively high installation heights, and provide a new option for coupler surface mounting.

[0005] Therefore, the specific technical solution adopted by the present invention is as follows: an upper-mounted coupler mounting base, characterized in that it includes a housing, a cover plate located above the housing, and a coupler mounting plate fixed to the cover plate. The back of the housing has a connecting plate for fixing to the front facade of the vehicle end beam. The cover plate abuts against the connecting plate, thereby transmitting the longitudinal force on the coupler mounting plate to the vehicle end beam through the cover plate and the connecting plate.

[0006] Furthermore, the cover plate has an airfoil structure, with a U-shaped interface in the center for fixing the coupler mounting plate and oblique transition structures on both sides, which allow longitudinal forces to be evenly transmitted to the end beams.

[0007] Furthermore, the bottom surface of the box body has side bottom plates located on the left and right sides of the coupler mounting plate. The side bottom plates extend rearward and protrude from the connecting plate and are fixed to the connecting plate. The portion of the side bottom plates protruding from the connecting plate is used for fixed connection with the lower surface of the vehicle end beam.

[0008] Specifically, the housing also includes transverse partitions and L-shaped surrounds vertically fixed between the cover plate and the side bottom plate. The housing also has a middle bottom plate located below the coupler mounting plate. A first longitudinal stiffener and a vertical plate are symmetrically arranged from the outside in between the coupler mounting plate and the middle bottom plate. The two ends of the first longitudinal stiffener and the two ends of the vertical plate are respectively fixed to the transverse partition and the L-shaped surround. The vertical plate has an elongated hole for placing a coupler mounting anti-rotation block. A second longitudinal stiffener and a third longitudinal stiffener are symmetrically arranged from the outside in between the cover plate and the middle bottom plate. The two ends of the second longitudinal stiffener and the two ends of the third longitudinal stiffener are respectively fixed to the transverse partition and the connecting plate. An oblique stiffener is arranged between the third longitudinal stiffener and the transverse partition. The second longitudinal stiffener and the first longitudinal stiffener are collinear, and the third longitudinal stiffener and the vertical plate are collinear.

[0009] The present invention also claims a rail vehicle underframe structure, including an underframe end beam, characterized in that the front part of the underframe end beam is fixed with the aforementioned upper-mounted coupler mounting seat.

[0010] The aforementioned manufacturing process for the top-mounted coupler mounting base is characterized by including the following steps: Step 1: Weld and fix the coupler mounting plate to the cover plate; Step 2: Weld L-shaped side panel, vertical plate, first longitudinal stiffener, transverse stiffener, partition, second longitudinal stiffener, third longitudinal stiffener and diagonal stiffener in sequence to the bottom surface of coupler mounting plate and cover plate. L-shaped side panel, partition and internal stiffener form internal frame. Step 3: Weld and fix the bottom plate and side bottom plate at the bottom of the internal frame, and weld the connecting plate at the front of the internal frame. The side bottom plate and connecting plate provide riveting mounting surfaces for the top-mounted coupler mounting seat. Step 4: Weld the side plate and support plate between the cover plate and the side bottom plate, and weld the upper reinforcing plate between the connecting plate and the cover plate; Step 5: Machin the coupler mounting interface on the upper surface of the coupler mounting plate, and machine the riveting interface on the upper surface of the side bottom plate and the outer surface of the connecting plate.

[0011] The beneficial effects of this invention are as follows: Compared to conventional coupler mounting bases, this invention provides an upper-mounted coupler mounting base, which modifies the coupler mounting surface. The coupler mounting surface acts on the base frame from the xy plane, reducing the height of the mounting surface and avoiding the bending moment formed by the force transmitted from the coupler to the vehicle body. The coupler force can be better transmitted to the vehicle body, and the force distribution is more uniform. At the same time, it meets the requirements of coupler installation under special working conditions where the installation height is too high.

[0012] Furthermore, the upper mounting base of this invention is directly riveted to the surface of the vehicle body end beam. The longitudinal force of the vehicle body can be smoothly transferred directly to the base frame floor through the end beam. The structure is more reasonable and has a larger contact surface with the vehicle body. The longitudinal force is diverted in a figure-eight shape, giving the structure good load-bearing capacity. Even under large coupler force, it is not easy for excessive local stress to occur.

[0013] The coupler mounting base of this invention has a closed overall structure, allowing for individual production. It is highly modular and possesses strong rigidity, making it resistant to deformation during individual production and transportation. Multiple weight-reduction holes can be added while meeting strength requirements, achieving a lighter weight compared to conventional mounting bases. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 is a schematic diagram of the top-mounted coupler mounting base structure provided by the present invention.

[0016] Figure 2 is a schematic diagram of the back of the top-mounted coupler mounting structure provided by the present invention.

[0017] Figure 3 is a schematic diagram of the internal structure of the top-mounted coupler mounting base provided by the present invention.

[0018] The icon numbers are as follows: 1-Coupled mounting plate; 2-Cover plate; 3-Side plate; 4-Support plate; 5-Upper reinforcing plate; 6-Side bottom plate; 7-Connecting plate; 8-Middle bottom plate; 9-L-shaped enclosure plate; 10-Upright plate; 11-First longitudinal stiffener; 12-Transverse stiffener; 13-Transverse partition; 14-Second longitudinal stiffener; 15-Third longitudinal stiffener; 16-Diagonal stiffener. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0020] like Figures 1-3As shown, the upper-mounted coupler mounting base of this embodiment of the invention mainly includes coupler mounting plate 1, cover plate 2, side plate 3, side bottom plate 6, connecting plate 7, bottom plate 8, surrounding plate 9, upright plate 10, etc., and the overall structure is symmetrical about the coupler centerline.

[0021] This embodiment features a box-type coupler mounting base, comprising a box body, a wing-shaped cover plate 2 located above the box body, and a coupler mounting plate 1 fixed to the cover plate 2. The back of the box body has a connecting plate 7 for riveting and fixing to the front facade of the vehicle end beam. The cover plate 2 abuts against this connecting plate 7, thereby transmitting the longitudinal force on the coupler mounting plate 1 to the vehicle end beam through the cover plate 2 and the connecting plate 7. Figure 1 As shown, the cover plate 2 has an wing-shaped structure. It has a U-shaped interface in the center for fixing the coupler mounting plate 1 and oblique transition structures (figure-eight structures) on both sides, which evenly transmit longitudinal forces to the end beam. The bottom surface of the housing has side bottom plates 6 on the left and right sides of the coupler mounting plate 1. The side bottom plates 6 extend rearward, protruding from and being fixed to the connecting plate 7. The portion of the side bottom plates 6 protruding from the connecting plate 7 is used for riveting and fixing to the lower surface of the vehicle end beam. The upper edge of the connecting plate 7 protrudes from the cover plate 2, and an upper reinforcing plate 5 is welded and fixed between the connecting plate 7 and the cover plate 2. The connecting plate 7 and the side bottom plates 6 are machined with riveting interfaces, which are respectively riveted to the front elevation and lower bottom surface of the underframe end beam. The riveting fixing method has the advantages of high installation accuracy, convenient assembly and disassembly, and no welding stress deformation.

[0022] The following is a detailed description of the structure of the remaining parts of the box: The box also includes a transverse partition 13 and an L-shaped surrounding plate 8 vertically fixed between the cover plate 2 and the side bottom plate 6, and a middle bottom plate 8 located below the coupler mounting plate 1. A first longitudinal stiffener 11 and a vertical plate 10 are symmetrically arranged from the outside to the inside between the coupler mounting plate 1 and the middle bottom plate 8. The two ends of the first longitudinal stiffener 11 and the two ends of the vertical plate 10 are fixed to the transverse partition 13 and the L-shaped surrounding plate 9, respectively. The vertical plate 10 has an elongated hole for placing the coupler mounting anti-rotation block. A second longitudinal stiffener 14 and a third longitudinal stiffener 15 are symmetrically arranged from the outside to the inside between the cover plate 2 and the middle bottom plate 8. The two ends of the second longitudinal stiffener 14 and the two ends of the third longitudinal stiffener 15 are fixed to the transverse partition 13 and the connecting plate 7, respectively. An oblique stiffener 16 is arranged between the third longitudinal stiffener 15 and the transverse partition 13. The second longitudinal stiffener 14 is collinear with the first longitudinal stiffener 11, and the third longitudinal stiffener 15 is collinear with the vertical plate 10.

[0023] In this embodiment, the coupler mounting plate 1 is made of 20mm thick carbon steel plate to provide a mounting surface for the coupler, and the cover plate 2 is made of 8mm thick carbon steel plate according to CAE calculations to transmit the longitudinal force of the coupler and achieve lightweight design.

[0024] The manufacturing process of the top-mounted coupler mounting base in this embodiment is characterized by the following steps: Step 1: Weld and fix the coupler mounting plate 1 to the cover plate 2.

[0025] Step 2: Weld L-shaped surrounding plate 9, upright plate 10, first longitudinal stiffener 11, transverse stiffener 12, transverse partition 13, second longitudinal stiffener 14, third longitudinal stiffener 15, and diagonal stiffener 16 sequentially to the bottom surface of coupler mounting plate 1 and cover plate 2. A 40×320mm elongated hole is made in the upright plate 10 to facilitate the placement of the coupler mounting anti-rotation block. The L-shaped surrounding plate 9, partition 13, and internal stiffeners form the internal frame, giving the structure good rigidity and strength.

[0026] Step 3: Weld the bottom plate 8 and the side bottom plate 6 to the bottom of the internal frame, and weld the connecting plate 7 to the front of the internal frame. The side bottom plate 6 and the connecting plate 7 provide riveting mounting surfaces for the upper-mounted coupler mounting seat.

[0027] Step 4: Weld side plate 3 and support plate 4 between cover plate 2 and side bottom plate 6, and weld upper reinforcing plate 5 between connecting plate 7 and cover plate 2; make a 1000×300mm elongated hole in side plate 3 to provide space for riveting points inside the cavity.

[0028] Step 5: After the resist welding is completed, machine the coupler mounting interface on the upper surface of the coupler mounting plate 1, and machine the riveting interface on the upper surface of the side bottom plate 6 and the outer surface of the connecting plate 7.

[0029] The aforementioned top-mounted coupler mounting base is based on a modular and lightweight design concept. The mounting surface is the xy plane, and the mounting base does not protrude too much from the underframe end beam, avoiding the situation of sudden cross-sectional changes and increased stress during force transmission. The entire structure is symmetrical about the coupler centerline, with a simple structure, small welding deformation, strong overall stress, high load-bearing capacity, and high safety factor.

[0030] By rationally arranging the number and position of the flanges and webs to form a figure-eight structure, longitudinal force is diverted to the floor on both sides of the underframe, avoiding the wheel well area, thus giving the structure good load-bearing capacity. At the same time, weight-reducing holes are opened on parts such as the cover plate and web to achieve lightweighting. Stiffeners are set between the uprights and the cover plate to facilitate force transmission. The uprights are connected to the underframe end beams through large-area contact and fasteners to achieve force differentiation and reduce local stress.

[0031] This top-mounted coupler mounting base can be used in straddle-type monorail trains. Therefore, the present invention also designs a rail vehicle underframe structure, including an underframe end beam, the front of which is fixed with the top-mounted coupler mounting base of the above embodiment.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A top-mounted coupler mounting base, characterized in that, The system includes a housing, a cover plate (2) located above the housing, and a coupler mounting plate (1) fixed to the cover plate (2). The back of the housing has a connecting plate (7) for fixing to the front facade of the vehicle end beam. The cover plate (2) abuts against the connecting plate (7), thereby transmitting the longitudinal force on the coupler mounting plate (1) to the vehicle end beam through the cover plate (2) and the connecting plate (7). The bottom surface of the box has side bottom plates (6) located on the left and right sides of the coupler mounting plate (1); the box also includes a transverse partition (13) and an L-shaped enclosure (9) vertically fixed between the cover plate (2) and the side bottom plates (6). The housing also has a bottom plate (8) located below the coupler mounting plate (1). A first longitudinal stiffener (11) and a vertical plate (10) are symmetrically arranged from the outside to the inside between the coupler mounting plate (1) and the bottom plate (8). The two ends of the first longitudinal stiffener (11) and the two ends of the vertical plate (10) are fixed to the transverse partition (13) and the L-shaped enclosure (9) respectively. The vertical plate (10) has an elongated hole for placing the coupler mounting anti-rotation block.

2. The top-mounted coupler mounting bracket according to claim 1, characterized in that, The cover plate (2) has an airfoil structure and has a U-shaped interface in the center for fixing the coupler mounting plate (1) and oblique transition structures on both sides, which allow longitudinal forces to be evenly transmitted to the end beam.

3. The top-mounted coupler mounting bracket according to claim 2, characterized in that, The side bottom plate (6) extends rearward and protrudes from the connecting plate (7) and is fixed to the connecting plate (7). The part of the side bottom plate (6) protruding from the connecting plate (7) is used to be fixedly connected to the lower surface of the vehicle end beam.

4. The top-mounted coupler mounting bracket according to claim 1, characterized in that, The cover plate (2) and the middle bottom plate (8) are symmetrically provided with a second longitudinal stiffener (14) and a third longitudinal stiffener (15) from the outside to the inside. The two ends of the second longitudinal stiffener (14) and the two ends of the third longitudinal stiffener (15) are fixed to the transverse partition (13) and the connecting plate (7) respectively. The third longitudinal stiffener (15) and the transverse partition (13) are provided with an oblique stiffener (16). The second longitudinal stiffener (14) is collinear with the first longitudinal stiffener (11), and the third longitudinal stiffener (15) is collinear with the vertical plate (10).

5. The top-mounted coupler mounting bracket according to claim 4, characterized in that, The upper edge of the connecting plate (7) protrudes from the cover plate (2), and an upper reinforcing plate (5) is welded and fixed between the connecting plate (7) and the cover plate (2).

6. The top-mounted coupler mounting bracket according to claim 3, characterized in that, The connecting plate (7) and the side bottom plate (6) are fixed to the front elevation and the bottom surface of the base frame end beam by riveting.

7. A rail vehicle underframe structure, comprising underframe end beams, characterized in that, The front part of the underframe end beam is fixed with an upper-mounted coupler mounting seat as described in any one of claims 1-6.

8. The manufacturing process of the top-mounted coupler mounting base as described in claim 6, characterized in that... Includes the following steps: Step 1: Weld and fix the coupler mounting plate (1) to the cover plate (2); Step 2: Weld L-shaped enclosure (9), upright plate (10), first longitudinal stiffener (11), transverse stiffener (12), transverse partition (13), second longitudinal stiffener (14), third longitudinal stiffener (15) and diagonal stiffener (16) sequentially to the bottom surface of coupler mounting plate (1) and cover plate (2). The L-shaped enclosure (9), partition (13) and internal stiffeners form the internal frame. Step 3: Weld and fix the bottom plate (8) and the side bottom plate (6) at the bottom of the internal frame, and weld the connecting plate (7) at the front of the internal frame. The side bottom plate (6) and the connecting plate (7) provide a riveting mounting surface for the top-mounted coupler mounting seat. Step 4: Weld the side plate (3) and the support plate (4) between the cover plate (2) and the side bottom plate (6), and weld the upper reinforcing plate (5) between the connecting plate (7) and the cover plate (2). Step 5: Machin the coupler mounting interface on the upper surface of the coupler mounting plate (1), and machine the riveting interface on the upper surface of the side bottom plate (6) and the outer surface of the connecting plate (7).

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