CN112224227B - Equal-section B-shaped stainless steel vehicle body collision-resistant front end underframe structure - Google Patents
Equal-section B-shaped stainless steel vehicle body collision-resistant front end underframe structure Download PDFInfo
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- CN112224227B CN112224227B CN202010949986.2A CN202010949986A CN112224227B CN 112224227 B CN112224227 B CN 112224227B CN 202010949986 A CN202010949986 A CN 202010949986A CN 112224227 B CN112224227 B CN 112224227B
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- roof beam
- stainless steel
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- afterbody
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F1/00—Underframes
- B61F1/08—Details
Abstract
The invention provides a collision-resistant front end underframe structure of an equal-section B-shaped stainless steel car body, which comprises a sleeper beam, a traction beam, a front end beam, a longitudinal edge beam, an oblique edge beam, a front cross beam and a rear cross beam, and is characterized in that: still include embedded reinforcement roof beam, upper portion stiffening plate, afterbody crossbeam, afterbody longeron, embedded reinforcement roof beam is L type structure, and front end roof beam upper portion sets up the recess, and embedded reinforcement roof beam one end is fixed in the recess, the other end and hypotenuse fixed connection, embedded reinforcement roof beam upside set up the upper portion stiffening plate, the afterbody crossbeam sets up at the back crossbeam, sets up a plurality of afterbody longerons between afterbody crossbeam and the back crossbeam. The embedded reinforced beam structure not only improves the local strength of the anti-climbing energy absorption area, but also optimizes the stress transmission path, lengthens the length of the front end underframe, and arranges a tail longitudinal beam at the tail part of the front end underframe to lengthen the stress transmission path. By optimizing and lengthening the stress conduction path, the energy absorption performance of the front end chassis is improved, the collision resistance is improved, and the safety is improved.
Description
Technical Field
The invention belongs to the technical field of urban rail transit, and particularly relates to a collision-resistant front end underframe structure of an equal-section B-shaped stainless steel car body.
Background
The existing B-type stainless steel subway vehicle and B-type equal-section stainless steel vehicle body are mature in material and process, easy to weld, good in interface size stability and easy to produce in batches. The B-type stainless steel metro vehicle collision energy absorption structure generally adopts a secondary energy absorption structure of a car coupler and an anti-creeper, and is limited by train marshalling length, the whole technical parameters of the B-type stainless steel metro vehicle, the whole stroke of the car coupler anti-creeper and the like, the vehicle can not meet the collision resistance requirement of 25Km/h collision energy absorption of the train on the structure, the safety risk of the steel structure is higher, the adaptability to novel traffic volume and frequency is low, and the existing vehicle body structure is not careful in the aspect of meeting the collision resistance requirement based on the increasingly enhanced train collision energy absorption requirement. According to the comprehensive requirements of the single vehicle transportation quantity, the operation frequency and the like of the vehicle, the safety of the vehicle body steel structure, particularly the front end underframe, needs to be further improved.
Disclosure of Invention
The invention aims to provide a collision-resistant front end chassis applied to a B-shaped stainless steel vehicle body with a constant section based on materials used for an existing stainless steel vehicle body structure and a manufacturing process, wherein the collision-resistant front end chassis is applied to the B-shaped stainless steel vehicle body with the constant section under the condition that the whole vehicle structure is not greatly changed and the weight change is less than 100 KG.
In order to achieve the purpose, the invention provides a collision-resistant front end underframe structure of an equal-section B-type stainless steel car body, which comprises a sleeper beam, a traction beam, a front end beam, a longitudinal edge beam, an oblique edge beam, a front cross beam and a rear cross beam, and is characterized in that: still include embedded reinforcement roof beam, upper portion stiffening plate, afterbody crossbeam, afterbody longeron, embedded reinforcement roof beam is L type structure, sets up in front end roof beam and hypotenuse roof beam junction, and front end roof beam upper portion sets up the recess, and embedded reinforcement roof beam one end is embedded into in the recess and with front end roof beam fixed connection, the other end and hypotenuse fixed connection, embedded reinforcement roof beam upside set up the upper portion stiffening plate, upper portion stiffening plate fixed connection in the inboard of front end roof beam and hypotenuse roof beam corner, the front end extend to in the front end roof beam recess and with front end roof beam, hypotenuse roof beam, embedded reinforcement roof beam fixed connection, the afterbody crossbeam sets up a plurality of afterbody longerons behind the rear end beam, between afterbody crossbeam and the rear end beam. The embedded reinforcing beam structure not only improves the local strength of an anti-climbing energy absorption area, but also optimizes the stress transmission path, the embedded reinforcing beam and the front end beam support the vehicle head framework on the upper side, enough strength can be provided, the length of the front end chassis is lengthened, the tail longitudinal beam is arranged at the tail part of the front end chassis, the stress of the traction beam in the pillow is transmitted to the position of the rear cross beam, and the stress is dispersed and the stress transmission path is lengthened through the tail longitudinal beam. By optimizing and lengthening the stress conduction path, the energy absorption performance of the front end chassis is improved, the collision resistance is improved, and the safety is improved.
Furthermore, the front end of the embedded reinforcing beam extends out of the front end beam, the lower side of the end part is an inclined plane which inclines upwards, the upper side supports the vehicle head framework, and the stress on the upper side can be better transmitted to the front end underframe structure.
Furthermore, the upper reinforcing plate extends to the position of the inner side front longitudinal beam and is fixedly connected with the front longitudinal beam, and a fillet is arranged at the corner of the front end beam and the front longitudinal beam on the upper reinforcing plate. The reinforcing plate extends to the front longitudinal beam, so that the front strength of the front end underframe is improved, and the collision resistance is improved.
Furthermore, two tail longitudinal beams of the tail longitudinal beams are arranged corresponding to the traction beam, and other tail longitudinal beams are symmetrically arranged on two sides of the two tail longitudinal beams, so that stress is dispersed and transferred, and safety is improved.
Furthermore, a triangular reinforcing part is arranged on the inner side of the connecting position of the oblique side beam and the front cross beam, and the reinforcing part consists of a diagonal brace and an upper triangle and a lower triangle, so that the front strength of the front end underframe is improved, the collision resistance is improved, and the safety is improved.
According to the invention, the embedded reinforcing beam and the upper reinforcing plate are arranged in the mounting area of the front-end beam anti-creeper, the length of the front-end chassis is lengthened, and the longitudinal beam is arranged at the tail part of the front-end chassis, so that the weight of the whole vehicle is increased by less than 100KG, and the light-weight requirement of the vehicle is facilitated; the structure of the invention has high conformity with the material and the manufacturing process of the whole vehicle at the present stage, only partial structures are added at the tail parts of the front end beam and the front end underframe, and the cost is not changed greatly; the structure of the invention occupies less space of the chassis, does not occupy the space of hoisting, wiring and pipe arrangement of equipment under the vehicle, and has strong operability; the structure of the invention meets the requirement of the train on the crashworthiness of the steel structure of the train body when the train absorbs energy at 25 Km/h.
Drawings
FIG. 1 is a schematic view of a front end chassis configuration of the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1;
FIG. 3 is a schematic view of a front end beam groove;
FIG. 4 is a top view of the installation of an embedded reinforcing beam;
fig. 5 is a bottom side view of the installation of an embedded reinforcing beam.
Wherein: the structure comprises 1-sleeper beam, 2-traction beam, 3-front end beam, 4-longitudinal side beam, 5-oblique side beam, 6-front cross beam, 7-rear cross beam, 8-embedded reinforcing beam, 9-upper reinforcing plate, 10-tail cross beam, 11-tail longitudinal beam, 12-front longitudinal beam and 13-reinforcing piece.
Detailed Description
Referring to fig. 1, a concrete embodiment of the present invention provides an equal-section B-type stainless steel vehicle body collision-resistant front end underframe structure, which includes a sleeper beam 1, a draft beam 2, a front end beam 3, longitudinal side beams 4, a sloping side beam 5, a front cross beam 6, a rear cross beam 7, an embedded reinforcing beam 8, an upper reinforcing plate 9, a tail cross beam 10, a tail longitudinal beam 11, and a front longitudinal beam 12, wherein the longitudinal side beams 4 and the sloping side beams 5, the sleeper beam 1, and the front end beam 3 are connected into a whole by welding along the vehicle body longitudinal direction, the draft beam 2, the sleeper beam 1, and the front end beam 3 are connected into a whole by arc welding in the transverse direction to form a main frame of a front end underframe, the main frame is connected by welding, and the front cross beam 6, the rear cross beam 7, the connecting plate 6, the tail longitudinal beam 11, and the front longitudinal beam 12 are used to ensure the strength of the front end underframe.
The anti-climbing device is characterized in that an embedded reinforcing beam 8 is arranged in an anti-climbing device mounting area of a front end beam 3, the conductivity of the stress of a vehicle body in the collision energy absorption process is enhanced, the embedded reinforcing beam 8 is of an L-shaped structure and is arranged at the joint of the front end beam 3 and a sloping side beam 5, a groove is arranged on the upper portion of the front end beam 3, one end of the embedded reinforcing beam 8 is embedded into the groove and is connected with the front end beam 3 in a welding way, the other end of the embedded reinforcing beam is connected with the sloping side beam 5 in a welding way, an upper reinforcing plate 9 is arranged on the upper side of the embedded reinforcing beam 8, the upper reinforcing plate 9 is fixedly connected with the inner side of the corner between the front end beam 3 and the sloping side beam 5, the front end extends into the groove and is fixedly connected with the front end beam 3, the sloping side beam 5 and the embedded reinforcing beam 8, the local strength of the anti-climbing region is improved, the stress energy absorption path is also optimized, the front end of the embedded reinforcing beam 8 extends out of the front end beam 3, the lower side of the front end is an inclined plane, the upper sides of the embedded reinforcing beams 8 and the front end beams 3 support a vehicle head framework, and a solid foundation structure is provided for welding and mounting of the vehicle head framework in the whole chassis and even the whole vehicle structure. The front longitudinal beam 12 is arranged between the front end beam 3 and the front cross beam 6 on two sides of the traction beam 2, the upper reinforcing plate 9 extends to the position of the front longitudinal beam 12 on the inner side and is fixedly connected with the front longitudinal beam 12, the front strength of the front end chassis is increased, the collision resistance is improved, and the fillet is arranged at the corner of the front end beam 3 and the front longitudinal beam 12 on the upper reinforcing plate 9 to avoid a welding stress concentration area.
The rear cross beam 10 is arranged behind the rear cross beam 7, a plurality of rear longitudinal beams 11 are arranged between the rear cross beam 10 and the rear cross beam 7, two of the rear longitudinal beams 11 are arranged corresponding to the traction beam 2, other rear longitudinal beams are symmetrically arranged on two sides of the two rear longitudinal beams, the force of the traction beam 2 in the sleeper is transmitted to the position of the rear cross beam 7, the stress is dispersed through the rear longitudinal beams 11, and the stress transmission path is lengthened.
The triangular reinforcing piece 13 is arranged on the inner side of the connecting position of the oblique side beam 5 and the front cross beam 6, and the reinforcing piece is composed of one diagonal brace and an upper triangle and a lower triangle, so that the strength of the front end of the underframe is improved, and the safety is improved.
Claims (5)
1. The utility model provides a section B type stainless steel automobile body is able to bear or endure to hit front end chassis structure, includes sleeper beam (1), draw beam (2), front end roof beam (3), vertical boundary beam (4), sloping boundary beam (5), front beam (6), rear frame member (7), its characterized in that: still include embedded reinforcement roof beam (8), upper portion stiffening plate (9), afterbody crossbeam (10), afterbody longeron (11) and anterior longeron (12), embedded reinforcement roof beam (8) are L type structure, set up in front end roof beam (3) and hypotenuse roof beam (5) junction, front end roof beam (3) upper portion sets up the recess, embedded reinforcement roof beam (8) one end is embedded into in the recess and with front end roof beam (3) fixed connection, the other end and hypotenuse roof beam (5) fixed connection, embedded reinforcement roof beam (8) upside sets up upper portion stiffening plate (9), upper portion stiffening plate (9) fixed connection is in the inboard of front end roof beam (3) and hypotenuse roof beam (5) corner, the front end extends to in front end roof beam (3) recess and with front end roof beam (3), hypotenuse roof beam (5), embedded reinforcement roof beam (8) fixed connection, afterbody crossbeam (10) sets up behind rear crossbeam (7), a plurality of tail longitudinal beams (11) are arranged between the tail cross beam (10) and the rear cross beam (7); the front longitudinal beam (12) is arranged between the front end beam (3) and the front cross beam (6) on two sides of the traction beam (2).
2. The crashworthy front end underframe structure of an equal-section B-type stainless steel car body according to claim 1, wherein: the front end of the embedded reinforcing beam (8) extends out of the front end beam (3), and the lower side of the end part is an inclined plane which inclines upwards.
3. The crashworthy front end underframe structure of an equal-section B-type stainless steel car body according to claim 1, wherein: the upper reinforcing plate (9) extends to the position of the front longitudinal beam (12) on the inner side and is fixedly connected with the front longitudinal beam (12), and the corners of the front end beam (3) and the front longitudinal beam (12) of the upper reinforcing plate (9) are provided with round corners.
4. The crashworthy front end underframe structure of an equal-section B-type stainless steel car body according to claim 1, wherein: two of the tail longitudinal beams (11) are arranged corresponding to the traction beam, and the other tail longitudinal beams are symmetrically arranged on two sides of the two tail longitudinal beams.
5. The crashworthy front end underframe structure of an equal-section B-type stainless steel car body according to claim 1, wherein: a triangular reinforcing part (13) is arranged on the inner side of the connecting position of the oblique edge beam (5) and the front cross beam (6), and the reinforcing part (13) is composed of a diagonal brace and an upper triangle and a lower triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949986.2A CN112224227B (en) | 2020-09-11 | 2020-09-11 | Equal-section B-shaped stainless steel vehicle body collision-resistant front end underframe structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949986.2A CN112224227B (en) | 2020-09-11 | 2020-09-11 | Equal-section B-shaped stainless steel vehicle body collision-resistant front end underframe structure |
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| CN112224227A CN112224227A (en) | 2021-01-15 |
| CN112224227B true CN112224227B (en) | 2022-01-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112937623A (en) * | 2021-03-29 | 2021-06-11 | 北京轨道交通技术装备集团有限公司 | Rail vehicle chassis with large-section traction and bolster buffering structure |
| CN113232687B (en) * | 2021-05-21 | 2022-11-22 | 中车唐山机车车辆有限公司 | Railway vehicle and underframe assembly thereof |
| CN114148363B (en) * | 2021-12-29 | 2023-09-19 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle and end underframe thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6244801B1 (en) * | 2000-05-22 | 2001-06-12 | Thrall Car Manufacturing Company | Motor-vehicle carrying railcar with offset H-frame |
| JP3848820B2 (en) * | 2000-08-28 | 2006-11-22 | 三菱重工業株式会社 | Body structure |
| CN102079314B (en) * | 2010-12-23 | 2012-11-14 | 南车二七车辆有限公司 | Load increasing container flat wagon body applicable to running on Thailand meter-gage railway |
| JP5758044B2 (en) * | 2012-02-21 | 2015-08-05 | 日本車輌製造株式会社 | Railway vehicle |
| RU171459U1 (en) * | 2017-03-03 | 2017-06-01 | РЕЙЛ 1520 АйПи ЛТД | WAGON BODY FRAME |
| CN109383552B (en) * | 2018-09-06 | 2020-04-14 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle |
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