CN116279629A - Corbel structures, chassis and rail vehicles - Google Patents

Abstract

The invention discloses a sleeper beam structure, an underframe and a railway vehicle, which comprise middle sectional materials and outer sectional materials which are arranged side by side along the length direction of the vehicle body, wherein the two outer sectional materials are provided with inner cavity structures which are symmetrically arranged; the middle section bar is an integral section bar and comprises a middle top plate, a middle bottom plate, a left side plate, a right side plate and a first group of rib plates positioned in the inner cavity; the outer side section bar is an integral section bar and comprises an outer side top plate, an outer side bottom plate, an outer side plate and a second group of rib plates positioned in the inner cavity; the outer side top plates of the outer side profiles are welded and connected with the middle top plate of the middle profile through two welding seams, and the outer side bottom plates of the outer side profiles are welded and connected with the middle bottom plate of the middle profile through two welding seams. The sleeper beam structure can effectively reduce manufacturing difficulty, greatly reduce adjustment and repair workload, improve longitudinal load transmission capacity and overall structural strength, and reduce local stress level.

Description

Corbel structures, chassis and rail vehicles

technical field

The invention relates to the technical field of rail vehicles, in particular to a corbel structure of a rail vehicle. The invention also relates to an underframe and a rail vehicle provided with the corbel structure.

Background technique

As shown in Figure 1, in the existing rail vehicle bolster structure, it is generally composed of multiple profiles arranged sequentially in the width direction of the car body and tailor-welded, which has the problems of complex structure and large number of parts, resulting in complicated assembly process , large amount of welding, severe deformation and low structural strength.

In this regard, the solution is step-by-step adjustment, but this method has the disadvantage of large residual stress, and another method is to preset anti-deformation, but it also has the disadvantages of complex tooling and process and poor controllability. Both of the above two methods have problems such as long manufacturing cycle and high cost.

Contents of the invention

The object of the present invention is to provide a corbel structure. The bolster structure can effectively reduce the manufacturing difficulty, greatly reduce the workload of adjustment and repair, improve the longitudinal load transmission capacity and the overall structural strength, and reduce the local stress level.

Another object of the present invention is to provide a chassis provided with the corbel structure.

Another object of the present invention is to provide a rail vehicle provided with such an undercarriage.

In order to achieve the above object, the present invention provides a bolster structure, comprising intermediate profiles arranged side by side along the length direction of the vehicle body and outer profiles located on both sides of the intermediate profiles, the two outer profiles have The inner cavity structure is arranged symmetrically in the center; the middle profile is an integral profile, and on the cross-section, it includes a middle top plate, a middle bottom plate, a left side plate, a right side plate and a first group of ribs located in the inner cavity; the The outer profile is an integral profile, and in cross section, it includes an outer top plate, an outer bottom plate, an outer side plate and a second group of ribs located in the inner cavity; the outer top plates of the two outer profiles are connected to each other by two welds. The middle top plate of the middle profile is welded and connected, and the outer bottom plates of the two outer profiles are welded with the middle bottom plate of the middle profile through two welds.

Optionally, the left side plate and the right side plate of the intermediate profile are respectively provided with a laterally extending backing plate at the upper and lower parts, and the backing plate and the middle top plate of the intermediate profile form a An upper welding step that coincides with the inner edge of the top plate, and a lower welding step that can coincide with the inner edge of the outer bottom plate is formed between the backing plate and the middle bottom plate of the intermediate profile.

Optionally, the first group of ribs is in the shape of a cross "X"; and/or, the second group of ribs is in the shape of a "V".

Optionally, the angle at which the outer ribs in the "V"-shaped second group of ribs deviates from the vertical direction is greater than the angle at which the inner ribs deviate from the vertical direction.

Optionally, the outer rib extends obliquely from a position where the outer side plate is close to the upper end to a position where the outer bottom plate is biased outward, and the inner rib is inclined from a position where the outer top plate is close to the inner edge. extending to the position where the outer bottom plate is biased towards the inner side.

Optionally, the middle bottom board and the outer bottom board have substantially the same thickness, and their thicknesses are respectively greater than the thicknesses of the middle top board, left side board, right side board, outer top board and outer side board.

Optionally, the outer edges of the outer top plates of the two outer profiles are provided with floor welding steps matching the edges of the floor interface, so that the upper surface of the corbel structure is at the same level as the upper surface of the floor.

Optionally, a plurality of wiring pipes are provided, and each of the wiring pipes is distributed along the width direction of the vehicle body, and runs through the left side panel, the right side panel, the first group of ribs and all the intermediate profiles along the length direction of the vehicle body. The outer side plate and the second set of ribs of the outer profile.

Optionally, the middle bottom plate of the middle profile and the outer bottom plate of the outer profile jointly form a bolster bottom plate; the bolster bottom plate is provided with a center pin installation point and a first anti-rolling installation point at the middle position, and the The outside of the first anti-roll installation point is provided with a second anti-roll installation point, the outside of the second anti-roll installation point is provided with an air spring installation point, and the outside of the air spring installation point is provided with a vertical vibrator mounting point.

Optionally, the outer bottom plate of one of the outer profiles is provided with reinforcing plates extending outward at both ends in the width direction of the vehicle body; the outer bottom plate of the other outer profile is provided with A first horizontal rib extending outward, and a second horizontal rib extending outward is provided in the middle of the width direction of the vehicle body, and a part of the installation point of the vertical shock absorber is located on the first horizontal rib.

To achieve the above another objective, the present invention provides an underframe, comprising side beams, cross beams, corbels and traction beams, characterized in that the corbels have the corbel structure described in any one of the above.

In order to achieve the above yet another objective, the present invention provides a rail vehicle, comprising an underframe and a vehicle body provided on the underframe, and the underframe is the above-mentioned underframe.

The bolster structure provided by the present invention adopts a tailor-welded form of one middle profile and two outer profiles, and the three profiles are arranged and distributed along the length direction of the car body, which changes the arrangement and distribution of the profiles, and at the same time, improves each The rib plate structure inside the profile improves the load transfer efficiency. Compared with the profile structure arranged along the width direction of the car body, it can reduce 70% of welds, effectively reduce the difficulty of manufacturing, greatly reduce the workload of repairing, and improve production efficiency , which saves the manufacturing cost; because the design of the ribs inside the profile is more reasonable, it can meet the external interface and reinforcement requirements, ensure the structural strength while greatly reducing the installation of parts, reducing welding deformation and improving the structural safety margin.

In a preferred solution, by designing floor welding steps on the outer profile and splicing connection with the floor interface, it can ensure that the floor and the upper surface of the corbel are flat after installation, and avoid local stress concentration caused by structural mutations.

The underframe and rail vehicle provided by the present invention are provided with the bolster structure, and since the bolster structure has the above-mentioned technical effects, the underframe and rail vehicle provided with the bolster structure should also have corresponding technical effects.

Description of drawings

Fig. 1 is a schematic cross-sectional view of a corbel structure provided by an embodiment of the present invention;

Fig. 2 is a partial schematic diagram of the connection between the corbel structure shown in Fig. 1 and the floor;

Fig. 3 is a schematic diagram of the interface installation points at the bottom of the corbel structure shown in Fig. 1 .

In the picture:

10. Middle profile 11. Middle top plate 12. Middle bottom plate 13. Left side plate 14. Right side plate 15. First rib plate 16. Backing plate 20. Outer profile 21. Outer top plate 210. Floor welding steps 22. Outer bottom plate 221. First horizontal rib plate 222. Second horizontal rib plate 223. Reinforcing plate 23. Outer side plate 24. Second set of rib plate 241. Outer rib plate 242. Inner rib plate 30. Wiring pipe 40. Floor interface 50. Traction beam

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

In this article, terms such as "upper, lower, inner, outer" are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may also change accordingly depending on the drawings. It is understood as an absolute limitation on the scope of protection; moreover, relative terms such as "first" and "second" are only used to distinguish one from another component with the same name, and do not necessarily require or No such actual relationship or order between these components is implied.

Please refer to FIG. 1 . FIG. 1 is a schematic cross-sectional view of a corbel structure provided by an embodiment of the present invention.

In a specific embodiment, the bolster structure provided by the present invention is composed of three pieces of aluminum alloy profiles as a whole. The outer profiles 20 on both sides of the profile, the two outer profiles 20 are arranged symmetrically with the middle profile 10 as the center, and have a symmetrical inner cavity structure.

The middle section bar 10 is an integral section bar, without internal welds, without welding and repairing. A first set of ribs 15 is provided in the cavity.

The first set of ribs 15 is in the shape of an intersecting "X", and is integrally formed by extrusion with the middle top board 11, middle bottom board 12, left side board 13 and right side board 14, along the diagonal direction of the inner cavity of the middle profile 10 Intersect to divide the inner cavity of the middle section bar 10 into triangles with upper, lower, left and right corners facing each other.

The outer profile 20 is also an integral profile, without internal welds, without welding and repairing. On the cross section, it has an outer top plate 21, an outer bottom plate 22 and an outer side plate 23, and a second set of Rib 24.

The second set of ribs 24 is in the shape of a "V" and is integrally formed by extrusion with the outer top plate 21, the outer bottom plate 22, and the outer side plate 23. The angle at which the outer ribs 241 deviate from the vertical direction is greater than the angle at which the inner ribs 242 deviate from the vertical direction. The angle of the direction.

Specifically, the outer rib 241 extends obliquely from the position near the upper end of the outer side plate 23 to the position where the outer bottom plate 22 is biased toward the outside, and the inner rib 242 extends obliquely from a position near the inner edge of the outer top plate 21 to the outer bottom plate 22. Biased towards the inner position. The second group of ribs 24 divides the inner cavity of the outer profile 20 into three triangles or quasi-triangular structures on the left, the middle and the right. The triangular-like apex in the middle is downward, showing a shape of wide top and narrow bottom.

It can be seen that, in addition to the horizontal and vertical ribs on the outside, the middle profile 10 and the outer profile 20 are also provided with oblique ribs inside, and the ribs divide the interior into several triangles or quasi-triangular frames, because the triangle has a very strong Stability, so the structure has good rigidity and strength as a whole, ensuring that it can bear vertical loads and lateral loads at the same time.

The left side plate 13 and the right side plate 14 of the middle profile 10 are respectively provided with a backing plate 16 extending laterally at the upper and lower parts, and an inner edge capable of connecting with the outer top plate 21 is formed between the backing plate 16 and the middle top plate 11 of the middle profile 10. For the matching upper welding step, a lower welding step that can coincide with the inner edge of the outer bottom plate 22 is formed between the backing plate 16 and the middle bottom plate 12 of the middle profile 10 .

The outer top plates 21 of the two outer profiles 20 are welded to the middle top plate 11 of the middle profile 10 by two welds, and the outer bottom plates 22 of the two outer profiles 20 are welded to the middle bottom plate 12 of the middle profile 10 by two welds. That is to say, the middle profile 10 and the outer profile 20 are connected by two welds at the top and two other welds at the bottom, and are connected by four welds in total. After the three are welded, the upper surface is located at the same plane, the lower surface is on the same plane.

In terms of plate thickness, the thicknesses of the components of the middle profile 10 and the outer profile 20 are not exactly the same, the middle bottom plate 12 and the outer bottom plate 22 have substantially the same thickness, and their thicknesses are respectively greater than the middle top plate 11, left side plate 13, The thickness of the right side panel 14 , the outer top panel 21 and the outer side panel 23 . Such a design can reduce the weight of the corbel structure as much as possible on the premise of ensuring the structural strength.

In addition, in this embodiment, a plurality of wiring pipes 30 (see FIG. 3 ) are arranged on the bolster structure, and these wiring pipes 30 are distributed along the width direction of the vehicle body, and run through the left side plate 13 of the middle profile 10 along the length direction of the vehicle body. , the right side plate 14, the first group of ribs 15 and the outer side plate 23 of the outside profile 20, the second group of ribs 24, the section of the wiring pipe 30 is oblong, and its inside is formed for passing under the car. Various lines and pipes can form a part of the corbel structure while playing the role of wiring, and further enhance the structural strength of the corbel.

Since the interior of the bolster structure is provided with the wiring pipe 30, the part of the left side plate 13 and the right side plate 14 near the end of the middle profile 10 can be removed through subsequent processing. In this way, under the premise of ensuring the structural strength, the purpose of further reducing the weight of the corbel can be achieved.

Please also refer to FIG. 2 . FIG. 2 is a partial schematic diagram of the connection between the corbel structure shown in FIG. 1 and the floor.

The outer edges of the outer top plates 21 of the two outer profiles 20 are provided with floor welding steps 210 to match the edges of the floor interface 40, so that after the corbel structure is welded to the floor, its upper surface is at the same level as the upper surface of the floor.

By setting the floor welding steps 210 on the corbel, it is connected with the floor interface 40 through welds, and after welding, it is ground to ensure that the corbel and the floor have the same horizontal plane, which can reduce the stress concentration caused by structural mutations and improve the overall strength of the structure .

Please refer to FIG. 3 , which is a schematic diagram of the interface installation points at the bottom of the corbel structure shown in FIG. 1 .

The middle bottom plate 12 of the middle profile 10 and the outer bottom plate 22 of the outer profile 20 jointly form the bottom plate of the corbel. The inner ribs of the corbel are set while considering the arrangement of the installation points. The bottom plate of the corbel is provided with a central pin installation point A at the middle position. and the first anti-roll installation point B, the outside of the first anti-roll installation point is provided with the second anti-roll installation point C, the outside of the second anti-roll installation point is provided with the air spring installation point D, the air spring installation There is a vertical shock absorber installation point E on the outside of the point, and one or two ribs are arranged near each installation point to ensure that the installation point has sufficient strength.

The outer bottom plate 22 of one of the outer profiles 20 is provided with a reinforcing plate 223 extending outwards at both ends in the width direction of the vehicle body, and a smooth transition is made between the reinforcing plate 221 and the outer bottom plate 22 through a circular arc; the other outer profile 20 The outer bottom plate 22 of the vehicle body is provided with first horizontal ribs 221 extending outwards at both ends in the width direction of the vehicle body, and a second horizontal ribs 222 extending outwards is provided at the middle of the width direction of the vehicle body. A part of the device installation point is located at the first horizontal rib 221.

The first horizontal rib 221 and the second horizontal rib 222 can be used as triangular reinforcement instead of welding ribs, can be used to set the shock absorber installation interface, and can be connected with the traction beam 50, reducing the number of welding parts , greatly improving the structural strength.

The above-mentioned embodiments are only preferred solutions of the present invention, and are not limited thereto. On this basis, targeted adjustments can be made according to actual needs, so as to obtain different implementation modes. For example, the relative position of each installation point changes according to actual needs, and so on. Since there are many ways of possible realization, it is not necessary to give examples one by one here.

The bolster structure improves the profile tailor-welded form and the internal rib structure, and improves the load transfer efficiency. Compared with the structure in which the profiles are arranged and distributed along the width direction of the car body, it can reduce 70% of the welds, effectively reducing the manufacturing difficulty, and greatly Reduce the maintenance workload, improve production efficiency, and save manufacturing costs; because the ribs inside the profile are designed more reasonably, it can meet the external interface and reinforcement requirements, greatly reduce the installation of parts while ensuring the structural strength, and reduce the Welding deforms and increases structural safety margins.

In addition to the above-mentioned corbel structure, the present invention provides an underframe mainly composed of side beams, cross beams, corbels and traction beams 50, etc., wherein the corbel has the above-described corbel structure.

The present invention also provides a rail vehicle, which has an underframe and a car body located on the underframe, wherein the underframe is provided with the bolster structure described above, and for other structures of the underframe and the rail vehicle, please refer to the prior art , this article will not go into details.

The corbel structure, underframe and rail vehicle provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principles and implementation modes of the present invention, and the descriptions of the above embodiments are only used to help understand the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (12)

1. The sleeper beam structure is characterized by comprising middle sectional materials (10) which are arranged side by side along the length direction of a vehicle body and outer side sectional materials (20) which are positioned on two sides of the middle sectional materials (10), wherein the two outer side sectional materials (20) are provided with inner cavity structures which are symmetrically arranged by taking the middle sectional materials (10) as the center; the middle section bar (10) is an integral section bar, and comprises a middle top plate (11), a middle bottom plate (12), a left side plate (13), a right side plate (14) and a first group of rib plates (15) positioned in the inner cavity in the cross section; the outer profile (20) is an integral profile and comprises an outer top plate (21), an outer bottom plate (22), an outer side plate (23) and a second group of rib plates (24) positioned in the inner cavity in the cross section; the outer top plates (21) of the two outer profiles (20) are welded with the middle top plate (11) of the middle profile (10) through two welding seams, and the outer bottom plates (22) of the two outer profiles (20) are welded with the middle bottom plate (12) of the middle profile (10) through two welding seams.

2. The corbel structure according to claim 1, characterized in that the left side plate (13) and the right side plate (14) of the intermediate section bar (10) are provided with laterally extending tie plates (16) at the upper and lower parts, respectively, upper welding steps capable of being fitted with the inner edges of the outer side top plates (21) are formed between the tie plates (16) and the intermediate top plates (11) of the intermediate section bar (10), and lower welding steps capable of being fitted with the inner edges of the outer side bottom plates (22) are formed between the tie plates (16) and the intermediate bottom plates (12) of the intermediate section bar (10).

3. The corbel structure according to claim 1, wherein the first set of gusset (15) is in the shape of an intersecting "X"; and/or, the second group of rib plates (24) are V-shaped.

4. A corbel structure according to claim 3, wherein the outer gusset (241) of the second set of gusset (24) is angled away from vertical more than the inner gusset (242) is angled away from vertical.

5. The corbel structure according to claim 4, wherein the outside gusset (241) extends obliquely from a position of the outside side plate (23) near the upper end to a position of the outside bottom plate (22) biased to the outside, and the inside gusset (242) extends obliquely from a position of the outside top plate (21) near the inner edge to a position of the outside bottom plate (22) biased to the inside.

6. The corbel structure according to claim 1, wherein the middle floor (12) and the outer floor (22) have substantially the same thickness and are each thicker than the middle roof panel (11), the left side panel (13), the right side panel (14), the outer roof panel (21), and the outer side panels (23).

7. The corbel structure according to claim 1, wherein the outer edges of the outer side top plates (21) of the two outer side profiles (20) are provided with floor welding steps (210) that mate with the edges of the floor interface (40) so that the upper surface of the corbel structure is in the same horizontal plane as the upper surface of the floor.

8. The corbel structure according to claim 1, wherein a plurality of wiring pipes (30) are provided, each of the wiring pipes (30) being distributed in a vehicle body width direction and penetrating a left side plate (13), a right side plate (14), a first set of rib plates (15), and outer side plates (23), a second set of rib plates (24) of the outer side profile (20) of the intermediate profile in a vehicle body length direction.

9. The corbel structure according to claim 1, characterized in that the intermediate bottom plate (12) of the intermediate profile (10), the outer bottom plate (22) of the outer profile (20) together form a corbel bottom plate; the sleeper beam bottom plate is provided with a center pin mounting point A and a first anti-rolling mounting point B in the middle position, a second anti-rolling mounting point C is arranged on the outer side of the first anti-rolling mounting point B, an air spring mounting point D is arranged on the outer side of the second anti-rolling mounting point C, and a vertical shock absorber mounting point E is arranged on the outer side of the air spring mounting point D.

10. The corbel structure according to claim 9, wherein the outer bottom plate (22) of one of the outer side profiles (20) is provided with reinforcing plates (223) extending outward at both ends in the vehicle body width direction; the other outside bottom plate of outside section bar (20) is equipped with outside first horizontal gusset (221) that extend at the both ends of automobile body width direction to be equipped with outside second horizontal gusset (222) that extend at the middle part of automobile body width direction, a part of vertical shock absorber mounting point E is located first horizontal gusset (221).

11. Chassis comprising side beams, cross beams, bolster beams and traction beams, characterized in that the bolster beams have a bolster structure according to any one of the preceding claims 1 to 10.

12. A rail vehicle comprising a chassis and a body provided to the chassis, characterized in that the chassis is the chassis according to claim 11.

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