Light rail chassis front end structure and train

Abstract

The application discloses a light rail underframe front end structure and a train, which comprises a traction beam arranged on a floor and a buffer beam arranged behind the traction beam, a buffer beam cover plate arranged on the buffer beam, underframe side beams arranged on both sides of the floor, the buffer beam cover plate extending forward to below the traction beam, a barrier remover mounting plate arranged on the front end of the buffer beam cover plate and extending to both sides of the traction beam, a barrier remover arranged on the barrier remover mounting plate, the barrier remover being connected to the barrier remover mounting plate through an anti-falling structure arranged above the barrier remover, the anti-falling structure comprising a T-shaped mounting plate and anti-falling pressing plates arranged on both sides of the T-shaped mounting plate, one end of the anti-falling pressing plate being connected to the T-shaped mounting plate and the other end being clamped above the barrier remover mounting plate, and a climbing-preventing device mounting structure arranged in front of the traction beam and comprising an opening and closing mechanism mounting assembly for mounting an opening and closing mechanism. The application improves the space utilization and sets the anti-falling mounting seat, thereby improving the operation safety.

Description

Technical Field

[0001] This invention relates to a light rail underframe front end structure and train, belonging to the field of rail transit vehicle technology. Background Technology

[0002] Currently, with the increasing lightweighting and modularity of railcars, the front-end traction and buffer structure of the car body has become relatively mature. However, with the diversification of vehicle operating environments, more functional requirements are being placed on the vehicles. To meet the different operating environment requirements of light rail vehicles, such as clearing small and medium-sized obstacles like falling rocks during vehicle movement, in addition to installing couplers and anti-climb devices, the front end of the car body also needs to be equipped with obstacle clearing devices and opening and closing mechanisms.

[0003] A typical obstacle clearer is usually a long, transverse welded steel assembly. For vehicles with limited front-end space and low operating speeds, the design should be simple and easy to install, while ensuring installation strength and functionality.

[0004] Chinese invention patent CN110696866B discloses a barrier clearing device for urban rail vehicles, including a barrier clearing structural beam and a barrier clearing plate disposed at the front of the barrier clearing structural beam. The rear of the barrier clearing structural beam has two parallel support columns for fixed connection with the coupler mounting base. The upper part of the barrier clearing structural beam has two mounting seats for fixed connection with the underframe end beam. The mounting seats are inserted and welded to the barrier clearing structural beam. The barrier clearing plate has a vertical elongated hole and is vertically adjustable and fixed to the front upright plate of the barrier clearing structural beam using fasteners. However, there is a long connecting structure between the installation position and the barrier clearing body of the device, and a support structure is welded below the barrier clearing body. This results in a complex structural design and a significant increase in weight at the vehicle end. Furthermore, most barrier clearing devices are fixed to the vehicle body using bolt connections, and the installation of the barrier clearing device does not consider secondary anti-detachment measures, resulting in poor operability of the secondary anti-detachment structure. Summary of the Invention

[0005] The present invention aims to provide a light rail underframe front end structure and train to solve the technical problems of complex installation structure and heavy weight of obstacle clearing device in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A light rail underframe front end structure includes a traction beam mounted on the floor and a buffer beam mounted behind the traction beam. The buffer beam is provided with a buffer beam cover plate. It also includes underframe side beams, anti-climb device mounting structures, and opening and closing mechanism mounting components mounted on both sides of the floor. The buffer beam cover plate extends forward to below the traction beam, and the front end of the buffer beam cover plate is provided with obstacle removal device mounting plates extending to both sides of the traction beam. Obstacle removal devices are provided on the obstacle removal device mounting plates.

[0008] Therefore, by changing the existing buffer beam cover plate structure, the present invention directly installs the obstacle remover on the buffer beam cover plate, freeing up space under the anti-climb device; thus simplifying the obstacle remover installation structure and reducing the weight of the front end of the vehicle body.

[0009] According to embodiments of the present invention, the present invention can be further optimized, and the optimized technical solution is as follows:

[0010] Specifically, the top of the obstacle remover is connected to the obstacle remover mounting plate via an anti-detachment structure; the anti-detachment structure includes a T-shaped mounting plate and anti-detachment pressure plates disposed on both sides of the T-shaped mounting plate; one end of the anti-detachment pressure plate is connected to the T-shaped mounting plate, and the other end is clamped above the obstacle remover mounting plate.

[0011] The anti-detachment structure prevents the obstacle remover from detaching again. If the connecting bolts fail, the anti-detachment pressure plates at the four corners will firmly lock the obstacle remover onto the mounting plate, preventing it from falling into the track and causing a safety hazard.

[0012] Specifically, the T-shaped mounting plate has ear plates protruding to both sides at one end near the side beam of the base frame, and the ear plates have mounting holes.

[0013] Specifically, the anti-detachment pressure plate has an L-shaped cross-section, the vertical part of the anti-detachment pressure plate is fixed to the ear plate by bolts, and the horizontal part of the anti-detachment pressure plate is clamped above the obstacle mounting plate.

[0014] Specifically, the traction beam includes a coupler mounting plate in the middle, and traction beam wing plates are provided on both sides of the coupler mounting plate; short floorboards are provided on both sides of the buffer beam; the obstacle remover mounting plate is located below the traction beam wing plates; an L-shaped reinforcing beam is provided behind the traction beam wing plates, and a reinforcing upright plate is provided between the L-shaped reinforcing beam and the obstacle remover mounting plate; a reinforcing upright plate is provided between the anti-climb device mounting structure and the obstacle remover mounting plate.

[0015] The connection strength between the floor and the buffer beam cover plate was enhanced by welding reinforced vertical plates and L-shaped reinforcing beams, thereby increasing the longitudinal and vertical load-bearing capacity of the front end of the base frame.

[0016] Specifically, an anti-climb device mounting structure is also provided in front of the traction beam. The anti-climb device mounting structure is a box-type structure. The anti-climb device mounting structure includes a mounting plate located at the front end and a cover plate located below the mounting plate. An opening and closing mechanism mounting assembly is provided on the anti-climb device mounting structure. The opening and closing mechanism mounting assembly includes a support assembly on the mounting plate and a mounting assembly and an anti-detachment buckle on the cover plate.

[0017] Specifically, the installation component is formed by welding two identical components back to back. The component structure includes a first plate member connected to the cover plate, a second plate member extending downward from the first plate member to below the support component, and a third plate member connected to the support component; there is a height difference between the first plate member and the third plate member.

[0018] Specifically, the installation component of the opening and closing mechanism further includes an anti - detachment buckle provided on the cover plate for pressing the first plate member; the anti - detachment buckle is in a "匚" - shaped structure with the opening facing downward.

[0019] Based on the same inventive concept, the present invention also provides a train, which includes a floor, and also includes underframe side beams arranged on both sides of the floor, and includes the light rail underframe front - end structure as described above; an integral nose cover is provided at the front end of the floor, and an installation boss for connecting to the floor and the underframe side beam is provided inside the integral nose cover; a number of mounting seats are also provided inside the integral nose cover.

[0020] Specifically, the installation boss is an integrally formed structure, including an intermediate installation boss and side installation bosses on both sides of the intermediate installation boss, and the installation boss is arranged above the underframe side beam.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1) The anti - climbing device, opening and closing mechanism, coupler located at the center of the drawbar, and obstacle - removing device installation structure located below the buffer beam cover plate of the present invention are installed in a staggered manner, which solves the problem of the tight installation space at the front end of the underframe end.

[0023] 2) The assembled obstacle - removing device and anti - detachment structure of the present invention are fixedly connected closely to the lower surface of the buffer beam cover plate; at the same time, anti - detachment pressure plates are symmetrically installed at the four corners of the drawbar cover plate, and the installation bolts are wrapped inside the anti - detachment mounting seat, avoiding safety accidents caused by the bolts loosening and falling into the track. This secondary anti - detachment structure has high reliability, is simple to operate, and is easy to disassemble and replace.

[0024] 3) The present invention adopts the common bearing type of the anti - climbing device mounting plate and the anti - climbing device cover plate arranged on both sides of the floor to install the installation component of the opening and closing mechanism. An opening and closing mechanism is installed at the front end of the installation component of the opening and closing mechanism, and the moving space of the opening and closing mechanism is located on both sides of the anti - climbing device, without interfering with the moving space of the anti - climbing device.

[0025] 4) The present invention describes the installation of an integrally formed fiberglass hood at the front end of the vehicle body. Specifically, the installation method is as follows: at the base frame floor position, a boss structure is integrally formed inside the hood, corresponding to the upper and lower side beams on the base frame floor, to seal the gap between the hood and the vehicle body. This boss structure is bolted to the upper surface of the side beams on both sides. The hood is fixedly connected to the C-shaped groove below the side beams at the position where it is tightened below the base frame side beams. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the front end structure of the light rail underframe of the present invention;

[0027] Figure 2 This is a rear view of the front end structure of the light rail underframe of the present invention;

[0028] Figure 3 This is a front view of the obstacle clearing device structure of the present invention;

[0029] Figure 4 for Figure 3 A sectional view of AA in the diagram;

[0030] Figure 5 This is a schematic diagram of the structure of the T-shaped mounting plate of the present invention;

[0031] Figure 6 This is a schematic diagram of the anti-detachment pressure plate of the present invention;

[0032] Figure 7 This is a top view of the mounting components of the opening and closing mechanism of the present invention;

[0033] Figure 8 for Figure 7 A sectional view of BB in the diagram;

[0034] Figure 9 Isometric view of the mounting components for the opening and closing mechanism;

[0035] Figure 10 This is a structural diagram of the installed components;

[0036] Figure 11 This is a schematic diagram of the overall headgear installation structure;

[0037] Figure 12 This is a side view of the entire headgear.

[0038] In the figure

[0039] 1-Traction beam; 1001-Traction beam wing plate; 1002-Coupled mounting plate; 2-Buffer beam cover plate; 21-Obstacle remover mounting plate; 3-Short floor; 4-Buffer beam; 5-L-shaped reinforcing beam; 6-Anti-climb device mounting structure; 601-Cover plate; 602-Mounting plate; 7-Underframe side beam; 8-Floor; 9-Reinforcing upright plate; 10-Obstacle remover; 101-Anti-detachment structure; 1011-T-shaped mounting plate; 1011a-Ear plate; 1012- 102-Anti-detachment pressure plate; 103-Plow-shaped welded obstacle removal component; 11-Integral head cover; 111-Mounting boss; 111a-Middle mounting boss; 111b-Side mounting boss; 12-Opening and closing mechanism mounting assembly; 1201-Support assembly; 1202-Mounting assembly; 1202a-First plate component; 1202b-Second plate component; 1202c-Third plate component; 1203-Anti-detachment buckle; 13-Mounting base. Detailed Implementation

[0040] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" used below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0041] like Figures 1-6 As shown, the front end structure of the light rail underframe in this embodiment includes a traction beam 1 mounted on the floor 8 and a buffer beam 4 mounted behind the traction beam 1. The buffer beam 4 is provided with a buffer beam cover plate 2, and also includes underframe side beams 7 mounted on both sides of the floor 8. The traction beam 1 includes a coupler mounting plate 1002 in the middle, and traction beam wing plates 1001 are provided on both sides of the coupler mounting plate 1002; short floorboards 3 are provided on both sides of the buffer beam 4.

[0042] The buffer beam cover plate 2 extends forward to the underside of the traction beam 1. The front end of the buffer beam cover plate 2 is provided with a barrier remover mounting plate 21 extending to both sides of the traction beam 1. A barrier remover 10 is provided on the barrier remover mounting plate 21. The top of the barrier remover 10 is connected to the barrier remover mounting plate 21 through an anti-detachment structure 101. The anti-detachment structure 101 includes a T-shaped mounting plate 1011 and an anti-detachment pressure plate 1012. An anti-climbing device mounting structure 6 is also provided in front of the traction beam 1. An opening and closing mechanism mounting assembly 12 is provided on the anti-climbing device mounting structure. The T-shaped mounting plate 1011 is provided with ear plates 1011a protruding to both sides at one end near the side beam 7 of the base frame. The ear plates 1011a have mounting holes. The anti-detachment pressure plate 1012 has an L-shaped cross section. The vertical part of the anti-detachment pressure plate 1012 is fixed to the ear plates 1011a by bolts. The horizontal part of the anti-detachment pressure plate 1012 is clamped above the obstacle remover mounting plate 21.

[0043] When installing the obstacle remover 10, the anti-detachment pressure plates 1012 are symmetrically placed on the lower surfaces of both ends of the obstacle remover mounting plate 21. The width of the T-shaped mounting plate 1011 is aligned with that of the obstacle remover mounting plate 21. The a-side of the anti-detachment pressure plate 1012 is pressed tightly against the upper surface of the ear plate 1011a of the T-shaped mounting plate 1011, the b-side is secured to the side of the obstacle remover mounting plate 21 with a small adjustment gap, and the c-side is placed on the upper surface of the obstacle remover mounting plate 21, aligned and assembled with the T-shaped mounting plate 1011. The anti-detachment pressure plates 1012 are symmetrically arranged at the four corners of the obstacle remover mounting plate 21.

[0044] The T-shaped mounting plate 1011, the obstacle remover mounting plate 21, and the anti-detachment pressure plate 1012 are fixed together by bolts. If the connecting bolts fail, the anti-detachment pressure plates 1012 at the four corners will firmly lock the obstacle remover 10 onto the obstacle remover mounting plate 21, preventing the bolts from falling into the track and causing a safety hazard. This design is simple to operate and easy to disassemble and replace.

[0045] like Figure 1 As shown, the obstacle removal device mounting plate 21 is located below the traction beam wing plate 1001; an L-shaped reinforcing beam 5 is provided behind the traction beam wing plate 1001, and a reinforcing upright plate 9 is provided between the L-shaped reinforcing beam 5 and the obstacle removal device mounting plate 21; a reinforcing upright plate 9 is provided between the anti-climb device mounting structure 6 and the obstacle removal device mounting plate 21.

[0046] The L-shaped reinforcing beam 5 and the reinforcing upright plate 9 jointly strengthen the main structure at the front end of the base frame, enhance the stability of the obstacle removal device installation, and increase the vertical and longitudinal load-bearing capacity of the front end of the base frame.

[0047] The anti-climb device mounting structure 6 is a box-type structure; the anti-climb device mounting structure 6 includes a mounting plate 602 located at the front end and a cover plate 601 located below the mounting plate 602; the opening and closing mechanism mounting assembly 12 includes a support assembly 1201 disposed on the mounting plate 602 and a mounting assembly 1202 disposed on the cover plate 601.

[0048] The anti-climb device mounting structure 6 is a box-type welded structure, symmetrically arranged about the center of the vehicle body. The anti-climb device mounting plate 602 is designed to be relatively thick, not only to meet the strength requirements of the wide-span integrated anti-climb device installation, but also to meet the installation requirements of the opening and closing mechanism.

[0049] The mounting assembly 1202 includes a first plate component 1202a connected to the cover plate 601, a second plate component 1202b extending from the first plate component 1202a downwards from the support assembly 1201, and a third plate component 1202c connected to the support assembly 1201.

[0050] The opening and closing mechanism is installed below the integrated anti-climb device and outside the anti-climb device's range of motion. The integrated anti-climb device spans two-thirds of the lateral distance between the two side beams. The opening and closing mechanism can only be installed in a space lower than the anti-climb device. The installation strength of the opening and closing mechanism is mainly supported by the anti-climb device cover plate 601 and the anti-climb device mounting plate 602.

[0051] Both the anti-climb cover plate 601 and the anti-climb mounting plate 602 are provided with mounting holes required for the opening and closing mechanism. A support component 1201 for the opening and closing mechanism mounting assembly 12 is provided on the anti-climb mounting plate; the support component is mainly a welded assembly with supporting ribs. The mounting assembly 1202 is provided on the cover plate 601, and the mounting assembly 1202 is formed by welding two identical "duckneck" shaped components back-to-back. Figure 7-10 As shown: the first plate component 1202a and the third plate component 1202c have a height difference and are bolted to the anti-climb cover plate 601 and the support component 1201, respectively. The second plate component 1202b is directly connected to the opening and closing mechanism assembly. The mounting component 1202 is an integrally formed part. The mounting parts 1202a and 1202c are arranged parallel to each other, and 1202b is arranged perpendicular to 1202a and 1202c. Two identical mounting components 1202 are welded together to form the opening and closing structure mounting component. The anti-detachment buckle 1203 spans across and clamps 1202a and is fixed to the cover plate 601, realizing secondary anti-detachment of the opening and closing mechanism mounting component 12.

[0052] like Figure 11-12As shown, the front end of the floor 8 is provided with an integral head cover 11, and the interior of the integral head cover is provided with mounting bosses 111 for connecting with the floor 8 and the base frame side beam 7; the integral head cover 11 is also provided with a plurality of mounting seats 13, and the mounting bosses 111 include a central mounting boss 111a and side mounting bosses 111b located on both sides of the central mounting boss 111a, and the mounting bosses 111 are located above the base frame side beam 7.

[0053] The integrated hood 11 also functions as a body skirt. Specifically, an area containing a central mounting boss 111a and a side mounting boss 111b is integrally formed inside the hood at the location of the underframe side beam, and this boss overlaps above the front floor of the underframe and above the front side beam. This boss area is connected to the front of the underframe by mounting seats 13 distributed on both sides of the underframe side beam. Furthermore, since the integrated hood tightens at the front of the underframe side beam, to improve connection reliability, the lower interior of the hood is fixed to a C-shaped groove located below the underframe side beam 7. Additionally, several mounting seats 13 are provided on the side walls and top cover mounting surfaces above the underframe, ultimately fixing the hood to the front of the vehicle body. This integrated hood reduces the use of a large amount of adhesive found in conventional hoods, and by incorporating the modular design of the front of the vehicle body underframe onto the more manufacturable hood, it achieves a certain degree of weight reduction for the front of the vehicle body underframe.

[0054] The aforementioned underframe front-end structure's arrangement of installation space for the four major mechanisms—coupler, anti-climb device, obstacle remover, and opening / closing mechanism—is as follows: the coupler is located at the center of the traction beam assembly, the integrated anti-climb device is at the top, the opening / closing mechanism is located below the anti-climb device mounting cover, and the obstacle remover mounting structure is located below the buffer beam cover. While ensuring installation strength and preventing interference between mechanisms, these four mechanisms are staggered, significantly improving the utilization of the limited space at the front of the underframe.

[0055] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art fall within the scope defined by the appended claims.

Claims

1. A light rail underframe front end structure, comprising a traction beam (1) disposed on a floor (8) and a buffer beam (4) disposed behind the traction beam (1), wherein a buffer beam cover plate (2) is disposed on the buffer beam (4), and further comprising underframe side beams (7) disposed on both sides of the floor (8), an anti-climbing device mounting structure (6), and an opening and closing mechanism mounting assembly (12), characterized in that: The buffer beam cover plate (2) extends forward to the underside of the traction beam (1), and the front end of the buffer beam cover plate (2) is provided with a barrier removal device mounting plate (21) extending to both sides of the traction beam (1); a barrier removal device (10) is provided on the barrier removal device mounting plate (21). An anti-climb device mounting structure (6) is provided in front of the traction beam (1). The anti-climb device mounting structure (6) is a box-type structure. The anti-climb device mounting structure (6) includes a mounting plate (602) located at the front end and a cover plate (601) located below the mounting plate (602). The anti-climb device mounting structure (6) is provided with an opening and closing mechanism mounting assembly (12), which includes a support assembly (1201) on the mounting plate (602) and a mounting assembly (1202) on the cover plate (601). The mounting assembly (1202) includes a first plate component (1202a) connected to the cover plate (601), a second plate component (1202b) extending from the first plate component (1202a) downwards toward the support assembly (1201), and a third plate component (1202c) arranged parallel to the support assembly (1201); the first plate component (1202a) and the third plate component (1202c) have a height difference.

2. The light rail underframe front end structure according to claim 1, characterized in that: The obstacle remover (10) is connected to the obstacle remover mounting plate (21) above by an anti-detachment structure (101); the anti-detachment structure (101) includes a T-shaped mounting plate (1011) and an anti-detachment pressure plate (1012); one end of the anti-detachment pressure plate (1012) is connected to the T-shaped mounting plate (1011), and the other end is stuck above the obstacle remover mounting plate (21).

3. The light rail underframe front end structure according to claim 2, characterized in that: The T-shaped mounting plate (1011) has a lug plate (1011a) protruding to both sides at one end near the side beam (7) of the base frame, and the lug plate (1011a) has mounting holes.

4. The front end structure of the light rail underframe according to claim 3, characterized in that: The anti-detachment pressure plate (1012) has an L-shaped cross section. The vertical part of the anti-detachment pressure plate (1012) is fixed to the ear plate (1011a) by bolts. The horizontal part of the anti-detachment pressure plate (1012) is clamped above the obstacle removal device mounting plate (21).

5. The front end structure of the light rail underframe according to claim 1, characterized in that: The traction beam (1) includes a coupler mounting plate (1002) in the middle, and traction beam wing plates (1001) are provided on both sides of the coupler mounting plate (1002); short floor plates (3) are provided on both sides of the buffer beam (4); the obstacle remover mounting plate (21) is located below the traction beam wing plate (1001); an L-shaped reinforcing beam (5) is provided behind the traction beam wing plate (1001), and a reinforcing upright plate (9) is provided between the L-shaped reinforcing beam (5) and the obstacle remover mounting plate (21); a reinforcing upright plate (9) is provided between the anti-climbing device mounting structure (6) and the obstacle remover mounting plate (21).

6. The front end structure of the light rail underframe according to claim 1, characterized in that: The opening and closing mechanism installation component (12) further includes an anti - detachment buckle (1203) provided on the cover plate (601) for pressing the first plate member (1202a); the anti - detachment buckle (1203) has a "C" - shaped structure with the opening facing downwards, and the anti - detachment buckle (1203) is clamped on the first plate member (1202a) and is connected to the cover plate (601) by bolts.

7. A train, comprising a floor (8) and underframe side beams (7) disposed on both sides of the floor (8), characterized in that: It includes the front - end structure of the light - rail underframe according to any one of claims 1 - 6; an integral hood (11) is provided at the front end of the floor (8), and an installation boss (111) for connecting to the floor (8) and the underframe side beam (7) is provided inside the integral hood; a number of mounting seats (13) are also provided inside the integral hood (11).

8. The train according to claim 7, characterized in that: The installation boss (111) includes an integrally formed middle installation boss (111a) and side installation bosses (111b) located on both sides of the middle installation boss (111a), and the installation boss (111) is provided above the underframe side beam (7).

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