A straddle-type monorail vehicle body bolster

Abstract

The present invention discloses a bolster for a straddle-type monorail vehicle body, which has a lower cover plate. Above the top of the lower cover plate, there is an upper cover plate that corresponds to and is parallel to it up and down. The left-right length of the upper cover plate is longer than that of the lower cover plate. Between the upper cover plate and the lower cover plate, there are two outer vertical plates that are symmetric front and back. The top and bottom of the outer vertical plates are respectively welded and fixed to the bottom surface of the upper cover plate and the top surface of the lower cover plate. At the left and right ends of the lower cover plate, two vertically arranged columns are symmetrically provided, and the top of the columns is welded and fixed to the bottom of the upper cover plate. This bolster for the straddle-type monorail vehicle body has a simple structure, few overall welds, is easy to weld, and has the characteristics of light weight, good stiffness, good strength, and good structural stability. It can meet the installation interface requirements of bogies with articulated disc devices and other components. It only needs to be bolted to the articulated disc, and it is easy to achieve the installation and positioning with the running gear.

Description

Technical Field

[0001] The present invention relates to a car body bolster, and particularly to a straddle-type monorail car body bolster. Background Art

[0002] The bolster is a component on the car body underframe that is connected to the bogie and is an important load-bearing part of the vehicle. Currently, there is a lack of a bolster structure for connecting the car body underframe to an articulated bogie with an articulated disc device.

[0003] The existing straddle-type monorail car body bolster structure needs to be connected to the secondary suspension system, has many interfaces, is complex in structural design, heavy in weight, and inconvenient to operate. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a straddle-type monorail car body bolster that is light in weight, good in stiffness, and can meet the installation of a bogie with an articulated disc device and other components.

[0005] To solve the above technical problem, the present invention is realized through the following technical solutions: A straddle-type monorail car body bolster has a lower cover plate. Above the top of the lower cover plate, there is an upper cover plate that corresponds to and is parallel to it up and down. The left and right lengths of the upper cover plate are longer than the left and right lengths of the lower cover plate. Between the upper cover plate and the lower cover plate, there are two outer vertical plates that are symmetric front and back. The top and bottom of the outer vertical plates are respectively welded together with the bottom surface of the upper cover plate and the top surface of the lower cover plate; At the left and right ends of the lower cover plate, two vertically arranged columns are symmetrically provided, and the top of the columns is welded together with the bottom of the upper cover plate.

[0006] Further, at the center positions on the front and back sides of the upper cover plate, two concave openings that are concave inward towards its center are symmetrically provided. In the concave openings, there are arc-shaped convex surfaces that are integrally formed with the upper cover plate. The upper and lower surfaces of the arc-shaped convex surfaces are respectively flush with the upper and lower surfaces of the upper cover plate, and connection holes that communicate up and down are provided on the arc-shaped convex surfaces.

[0007] Further, two sets of arc-shaped convex surfaces are provided in each concave opening, and the arc-shaped concave surfaces in the front and back two concave openings are symmetric front and back.

[0008] Further, an inner vertical plate that is longitudinally arranged front and back is welded between the two outer vertical plates that are symmetric front and back.

[0009] Further, the inner vertical plate is a rectangular plate, and there are three of them, arranged side by side left and right. The inner vertical plate in the middle is arranged on the longitudinal center line of the lower cover plate, and the left and right two inner vertical plates are symmetric with respect to the inner vertical plate in the middle part.

[0010] Further, an inner concave surface that indents towards the center of the lower cover plate is provided at the middle part of the outer vertical plate.

[0011] Further, the column is a hollow rectangular tube.

[0012] Further, the lower cover plate has a structure that is thick in the middle and thin at both ends. Its upper surface is horizontal, and its lower surface slopes from the center to both left and right sides, gradually thinning from thick to thin. There are symmetric protrusions at the middle parts of its front and rear sides.

[0013] Further, two large through-holes distributed diagonally and four small through-holes distributed crosswise diagonally are provided at the middle part of the lower cover plate. Both the large through-holes and the small through-holes are located at the outer side parts of the outer vertical plates. The large through-holes are used to dock the positioning pins on the bogie, and the small through-holes are bolt mounting holes for connecting the bolster and the articulated disc device on the bogie.

[0014] Further, the front length of the lower cover plate is less than the back length, and its left and right sides are symmetric bevel edges.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This straddle-type monorail vehicle body bolster has a simple structure, fewer overall welds, is easy to weld, and has the characteristics of light weight, good stiffness, good strength, and good structural stability. It can meet the installation interface requirements of the bogie with an articulated disc device and other components. It only needs to be connected to the articulated disc by bolts, and it is easy to achieve the installation and positioning of the running gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of a straddle-type monorail vehicle body bolster of the present invention;

[0017] Figure 2 is a disassembled structural schematic diagram of a straddle-type monorail vehicle body bolster of the present invention.

[0018] In the figure: 1. Lower cover plate; 11. Protrusion; 12. Large through-hole; 13. Small through-hole; 2. Upper cover plate; 21. Notch; 22. Arc convex surface; 221. Connection hole; 3. Column; 4. Outer vertical plate; 41. Concave surface; 5. Inner vertical plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. 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 should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Figure 1 and Figure 2 As shown, a bolster of a straddle-type monorail car body has a lower cover plate 1. Above the top of the lower cover plate 1, there is an upper cover plate 2 that corresponds to and is parallel to it up and down. The left and right lengths of the upper cover plate 2 are longer than the left and right lengths of the lower cover plate 1. The front length of the lower cover plate 1 is less than the back length, and its left and right sides are symmetric bevel edges; between the upper cover plate 2 and the lower cover plate 1, there are two outer vertical plates 4 that are symmetric front and back. The top and bottom of the outer vertical plate 4 are respectively welded and fixed to the bottom surface of the upper cover plate 5 and the top surface of the lower cover plate 1. An inward concave surface 41 that indents towards the center of the lower cover plate 1 is provided in the middle of the outer vertical plate 4; two vertically arranged columns 3 are symmetrically arranged at the left and right ends of the lower cover plate 1. The column 3 is a hollow rectangular tube, and its top is welded and fixed to the bottom of the upper cover plate 2.

[0023] For the convenience of assembly and connection, two inward concave notches 21 that indent towards the center are symmetrically arranged at the center of the front and back sides of the upper cover plate 2. An arc convex surface 22 integrally formed with the upper cover plate 2 is provided in the notch 21. Two sets of arc convex surfaces 22 are provided in each notch 21. The arc concave surfaces 22 in the front and back two notches 21 are symmetric front and back. The upper and lower surfaces of the arc convex surface 22 are flush with the upper and lower surfaces of the upper cover plate 2 respectively. A connection hole 221 that communicates up and down is provided on the arc convex surface 22 for connecting a seat.

[0024] To enhance the stiffness and strength of the structure, inner vertical plates 5 arranged longitudinally before and after are fixedly welded between two symmetric outer vertical plates 4 before and after. The inner vertical plates 5 are rectangular plates, and there are three of them, arranged side by side left and right. The inner vertical plate 5 in the middle is arranged on the longitudinal center line of the lower cover plate 1, and the two inner vertical plates 5 on the left and right are symmetric about the inner vertical plate 5 in the middle part.

[0025] To ensure the structural strength and achieve lightweight at the same time, the lower cover plate 1 has a structure with a thick middle and thin ends. Its upper surface is horizontal, and its lower surface transitions from the center to both left and right sides in a slope, gradually thinning from thick to thin. There are symmetric protrusions 11 before and after in the middle part of its front and rear sides.

[0026] To facilitate the installation and positioning with the running gear, two large through-holes 12 distributed diagonally and four small through-holes 13 distributed diagonally and crosswise are arranged in the middle part of the lower cover plate 1. The large through-holes 12 and small through-holes 13 are both located outside the outer vertical plates 4, that is, outside the concave surface 41. The design of the concave surface 41 is to avoid interfering with the positions of the large through-holes 12 and small through-holes 13. The large through-holes 12 are used to dock the positioning pins on the bogie, and the small through-holes 13 are bolt mounting holes for connecting the bolster and the articulated disc device on the bogie.

[0027] To ensure the overall stiffness, the materials of the lower cover plate 1, upper cover plate 2, columns 3, outer vertical plates 4, and inner vertical plates 5 are S550MC.

[0028] This straddle-type monorail vehicle bolster structure is simple, with few overall welds, easy to weld, and has the characteristics of lightweight, good stiffness, good strength, and good structural stability. It can meet the installation interface requirements of the bogie with an articulated disc device and other components. It only needs to be connected to the articulated disc by bolts, and it is easy to achieve the installation and positioning with the running gear.

[0029] It should be emphasized that: the above are only the preferred embodiments of the present invention, and it is not any form of limitation to the present invention. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A straddle-type monorail vehicle body bolster, Characterized in that: It has a lower cover plate (1), above the top of the lower cover plate (1) there is an upper cover plate (2) corresponding to it up and down and parallel up and down. The left and right length of the upper cover plate (2) is longer than the left and right length of the lower cover plate (1). Between the upper cover plate (2) and the lower cover plate (1), there are two outer vertical plates (4) symmetrically arranged front and back. The top and bottom of the outer vertical plate (4) are respectively welded and fixed to the bottom surface of the upper cover plate (2) and the top surface of the lower cover plate (1); at both ends of the lower cover plate (1) symmetrically, there are two vertically arranged columns (3), and the top of the column (3) is welded and fixed to the bottom of the upper cover plate (2); at the center parts of the front and back sides of the upper cover plate (2), there are two concave openings (21) recessed inward towards its center. In the concave opening (21), there is an arc convex surface (22) integrally formed with the upper cover plate (2). The upper and lower surfaces of the arc convex surface (22) are respectively flush with the upper and lower surfaces of the upper cover plate (2). On the arc convex surface (22), there are connecting holes (221) communicating up and down; in each concave opening (21), there are two groups of arc convex surfaces (22). The arc convex surfaces (22) in the front and back two concave openings (21) are symmetrically arranged front and back; in the middle part of the outer vertical plate (4), there is an inner concave surface (41) indented towards the center of the lower cover plate (1); the lower cover plate (1) has a structure that is thick in the middle and thin at both ends. Its upper surface is horizontal, and its lower surface is in a slope transition from the center to the left and right sides, gradually thinning from thick to thin. At the middle parts of its front and back sides, there are symmetrically arranged protrusions (11); at the middle part of the lower cover plate (1), there are two large through holes (12) distributed diagonally and four small through holes (13) distributed crosswise diagonally. The large through holes (12) and the small through holes (13) are both located outside the outer vertical plate (4). The large through holes (12) are used to dock the positioning pins on the bogie, and the small through holes (13) are bolt mounting holes for connecting the bolster and the articulated disc device on the bogie.

2. A straddle-type monorail vehicle body bolster according to claim 1, Characterized in that: There is an inner vertical plate (5) welded and fixed longitudinally front and back between the two outer vertical plates (4) symmetrically arranged front and back.

3. A straddle-type monorail vehicle body bolster according to claim 2, Characterized in that: The inner vertical plate (5) is a rectangular plate, and there are three of them, arranged side by side left and right. The inner vertical plate (5) in the middle is arranged on the longitudinal center line of the lower cover plate (1), and the two inner vertical plates (5) on the left and right are symmetric with respect to the inner vertical plate (5) in the middle part.

4. A straddle-type monorail vehicle body bolster according to claim 1, Characterized in that: The column (3) is a hollow rectangular pipe.

5. A straddle-type monorail vehicle body bolster according to claim 1, Characterized in that: The front length of the lower cover plate (1) is less than the back length, and its left and right sides are symmetric bevel edges.

Images