Articulated monorail vehicle chassis

Abstract

The invention relates to the technical field of railway vehicle chassis structures, and discloses a hinged type monorail vehicle chassis which comprises a main frame, a sleeper beam and a traction beam. The main frame comprises two sets of side longitudinal beams arranged side by side and two sets of side cross beams used for connecting the two sets of side longitudinal beams. The sleeper beam is parallel to the side cross beams, and the two ends of the sleeper beam are connected to the two sets of side longitudinal beams respectively; the traction beam and the side longitudinal beams are arranged in parallel, the two ends of the traction beam are connected to the two sets of side cross beams respectively, and the traction beam penetrates through the sleeper beam and is fixedly connected with the sleeper beam. And a traction plate is arranged on the traction beam. According to the double-layer truss type structural design, the traction beams, the side cross beams and the sleeper beams are composed, the weight is effectively reduced, and the structural strength and rigidity are guaranteed. Through the simple and convenient structure of the side cross beam, the stress on the side longitudinal beam can be effectively dispersed. The underframe structure is easy and convenient to construct, most of the underframe structure is made of profiles of the same or similar specifications, material preparation is easy and convenient, the welding amount is small, and the manufacturing time is saved by 30% or above.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicle underframe structures, and in particular to an articulated monorail vehicle underframe. Background Art

[0002] To ensure structural rigidity and strength, conventional monorail elevated tour vehicle chassis designs often utilize thick plate welded traction beams and side longitudinal beams. This results in a heavy structure and a large welding workload. This directly impacts the vehicle's drive and electrical control systems, resulting in reduced passenger capacity and rescue capabilities. Furthermore, the existing technology's intermediate traction beam is weak, limiting its traction capacity, and the chassis rigidity is low, resulting in poor passenger safety and experience.

[0003] In summary, there is an urgent need for an articulated monorail vehicle underframe that can significantly reduce the weight of the structure while ensuring the strength and rigidity of the structure. Summary of the Invention

[0004] The object of the present invention is to provide a lightweight and high-strength articulated monorail vehicle underframe, and the specific technical solution is as follows:

[0005] An articulated monorail vehicle underframe comprises a main frame, a bolster and a traction beam;

[0006] The main frame includes two sets of side longitudinal beams arranged in parallel and two sets of side transverse beams for connecting the two sets of side longitudinal beams;

[0007] The bolster is arranged parallel to the side cross beams, and its two ends are respectively connected to the two sets of side longitudinal beams;

[0008] The traction beam is arranged parallel to the side longitudinal beams, and its two ends are respectively connected to the two sets of side cross beams, and the traction beam passes through the bolster and is fixedly connected to the bolster;

[0009] A traction plate is provided on the traction beam.

[0010] Preferably, the bolsters are evenly distributed in multiple groups along the length direction of the side longitudinal beams, and the traction beam simultaneously passes through the multiple groups of bolsters and is fixedly connected to the multiple groups of bolsters.

[0011] Preferably, the traction beams are evenly distributed in multiple groups along the length direction of the side beams, and the traction plates are simultaneously connected to the multiple groups of traction beams.

[0012] Preferably, the multiple groups of traction beams are connected by a truss structure.

[0013] Preferably, the side beams, bolster beams and traction beams are each provided with two layers along the height direction of the main frame;

[0014] The two layers of side beams, the two layers of pillow blocks and the two layers of traction beams are all connected by a truss structure.

[0015] Preferably, the main frame is square.

[0016] Preferably, reinforcing cross beams are provided between the side longitudinal beams to connect the two groups of side longitudinal beams respectively;

[0017] Reinforced longitudinal beams are provided between the side beams and respectively connect the two groups of side beams.

[0018] Preferably, a bearing plate is further provided on the side cross beam, and the bearing plate falls on the bogie below and is arranged to slide relative to the bogie.

[0019] Preferably, the entire structure of the articulated monorail vehicle underframe is formed by welding profiles.

[0020] Preferably, the profile is a square tube. The application of the technical solution of the present invention has the following beneficial effects:

[0021] An articulated monorail vehicle underframe includes a main frame, a bolster and a traction beam; the main frame includes two sets of side longitudinal beams arranged in parallel and two sets of side cross beams for connecting the two sets of side longitudinal beams; the bolster is arranged in parallel with the side cross beams, and its two ends are respectively connected to the two sets of side longitudinal beams; the traction beam is arranged in parallel with the side longitudinal beams, and its two ends are respectively connected to the two sets of side cross beams, and the traction beam passes through the bolster and is fixedly connected to the bolster; the traction beam is provided with a traction plate. The double-layer lattice structure of the present invention is used to design the composition of the traction beam, side cross beam and bolster, which effectively reduces weight and ensures structural strength and rigidity. The design of the side cross beam is a simple structure that disperses the stress on the side longitudinal beam composition. Secondly, the underframe structure of the present invention is simple to construct. The original plan requires the preparation of various specifications of profiles and various specifications of sheet materials, and the amount of welding work is large; the structure of this patent is mostly the same or similar specifications of profiles, which is simple to prepare and the amount of welding is small; it saves more than 30% of manufacturing time.

[0022] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a structural schematic diagram of an articulated monorail vehicle underframe of the present invention.

[0025] In the figure: 1. Side longitudinal beam; 2. Traction beam; 3. Side transverse beam; 4. Bolster beam; 5. Load-bearing plate; 6. Traction plate. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0027] refer to Figure 1 An articulated monorail vehicle underframe comprises a main frame, a bolster 4, and a traction beam 2. The main frame comprises two sets of side longitudinal beams 1 arranged in parallel, and two sets of side cross beams 3 connecting the two sets of side longitudinal beams 1. The bolster 4 is arranged parallel to the side cross beams 3, with its ends connected to the two sets of side longitudinal beams 1. The traction beam 2 is arranged parallel to the side longitudinal beams 1, with its ends connected to the two sets of side cross beams 3. The traction beam 2 passes through the bolster 4 and is fixedly connected to the bolster 4. A traction plate 6 is provided on the traction beam 2. The entire structure is a "mesh" shape, bearing the pressure of the upper carriage, including the pressure of the upper structure itself and the pressure of the passengers. The traction plate is the traction hinge point, and is responsible for transmitting traction force to the traction beam.

[0028] The articulated monorail vehicle of this embodiment is designed with side cross beams connected to side longitudinal beams, which can effectively disperse the pressure exerted by the upper structure and passengers on the side longitudinal beams, avoid excessive stress, and can be used to suspend heavier electromechanical components under the vehicle.

[0029] The chassis is also provided with lifting points, which are responsible for lifting the articulated monorail vehicle chassis and the entire carriage thereon.

[0030] The design of the side cross beam has a simple structure and disperses the stress on the side longitudinal beams.

[0031] The bolsters 4 are evenly distributed in multiple groups along the length direction of the side longitudinal beams 1 , and the traction beams 2 simultaneously penetrate the multiple groups of bolsters 4 and are fixedly connected to the multiple groups of bolsters 4 .

[0032] The traction beams 2 are evenly distributed in multiple groups along the length direction of the side beams 3 , and the traction plates 6 are simultaneously connected to the multiple groups of traction beams 2 .

[0033] The multiple groups of traction beams 2 are connected by a truss structure.

[0034] The side beams 3, bolster beams 4 and traction beams 2 are all arranged in two layers along the height direction of the main frame;

[0035] The two layers of side beams 3, the two layers of bolster beams 4 and the two layers of traction beams 2 are all connected by a truss structure.

[0036] The main frame is square.

[0037] Reinforced cross beams are provided between the side longitudinal beams 1 to connect the two groups of side longitudinal beams 1;

[0038] Reinforced longitudinal beams are provided between the side cross beams 3 to connect the two groups of side cross beams 3 respectively.

[0039] A bearing plate 5 is further provided on the side cross beam 3 . The bearing plate 5 falls on the bogie below and is arranged to slide relative to the bogie.

[0040] The entire structure of the articulated monorail vehicle chassis is welded from profiles. The traction beam, side cross beams, and bolster beams, which are welded together from small profiles, form a lightweight and stable structure together with the side longitudinal beams.

[0041] The traction beam, side beam and pillow block beam are all designed as a double-layer lattice structure, which ensures strength while taking rigidity into consideration.

[0042] The profile is a square tube.

[0043] The underframe of this embodiment is changed from the original structure of main beam, pillow beam and side longitudinal beam to a lattice structure. The main beam is composed of double-layer lattice, which greatly reduces the weight of the structure. After calculation and verification, the total design weight of the original car underframe was 469.4kg, and the current structural optimization has reduced the weight to 341.6kg, with a design weight reduction of 27.2%, which has a significant weight reduction effect. Secondly, the underframe structure of this embodiment is simple to construct. The original plan requires the preparation of various specifications of profiles and various specifications of plates, and the welding workload is large. The vast majority of the structures of this patent are profiles of the same or similar specifications, which is simple to prepare and requires less welding; it saves more than 30% of manufacturing hours.

[0044] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An articulated monorail vehicle underframe, characterized in that: It includes a main frame, a bolster (4) and a traction beam (2); The main frame comprises two sets of side longitudinal beams (1) arranged in parallel and two sets of side transverse beams (3) for connecting the two sets of side longitudinal beams (1); The bolster (4) is arranged parallel to the side crossbeam (3), and its two ends are respectively connected to the two groups of side longitudinal beams (1); The traction beam (2) is arranged parallel to the side longitudinal beam (1), and its two ends are respectively connected to the two sets of side cross beams (3), and the traction beam (2) passes through the bolster (4) and is fixedly connected to the bolster (4); A traction plate (6) is provided on the traction beam (2).

2. The articulated monorail vehicle underframe according to claim 1, characterized in that The bolster beams (4) are evenly distributed in multiple groups along the length direction of the side longitudinal beam (1), and the traction beam (2) simultaneously penetrates the multiple groups of bolster beams (4) and is fixedly connected to the multiple groups of bolster beams (4).

3. The articulated monorail vehicle underframe according to claim 1, wherein: The traction beams (2) are evenly distributed in multiple groups along the length direction of the side beam (3), and the traction plates (6) are simultaneously connected to the multiple groups of traction beams (2).

4. The articulated monorail vehicle underframe according to claim 3, characterized in that The multiple groups of traction beams (2) are connected via a truss structure.

5. The articulated monorail vehicle underframe according to any one of claims 1 to 4, characterized in that: The side beams (3), pillow beams (4) and traction beams (2) are all provided in two layers along the height direction of the main frame; The two layers of side beams (3), the two layers of pillow beams (4), and the two layers of traction beams (2) are all connected via a truss structure.

6. The articulated monorail vehicle underframe according to claim 1, wherein: The main frame is square.

7. The articulated monorail vehicle underframe according to claim 1, wherein: Reinforced cross beams are provided between the side longitudinal beams (1) and respectively connect the two groups of side longitudinal beams (1); Reinforced longitudinal beams are provided between the side cross beams (3) and respectively connect the two groups of side cross beams (3).

8. The articulated monorail vehicle underframe according to claim 1, wherein: A bearing plate (5) is also provided on the side crossbeam (3), and the bearing plate (5) falls on the bogie below and is arranged to slide relative to the bogie.

9. The articulated monorail vehicle underframe according to claim 1, wherein: The entire structure of the articulated monorail vehicle underframe is formed by welding profiles.

10. The articulated monorail vehicle underframe according to claim 9, wherein: The profile is a square tube.

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