CN205396114U - Rail vehicle is with collision energy -absorbing device - Google Patents
Rail vehicle is with collision energy -absorbing device Download PDFInfo
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- CN205396114U CN205396114U CN201620155254.5U CN201620155254U CN205396114U CN 205396114 U CN205396114 U CN 205396114U CN 201620155254 U CN201620155254 U CN 201620155254U CN 205396114 U CN205396114 U CN 205396114U
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Abstract
The utility model provides a rail vehicle is with collision energy -absorbing device, tear the pipe including connecting piece, base and the energy -absorbing of setting outside the connecting piece is radial, the energy -absorbing is torn contains the corresponding one or more pairs of joint -cuttings of radial position on inner wall and the outer wall of pipe, every all contain the joint -cutting in joint -cutting and outer joint -cutting, every joint -cutting is non - closed line type joint -cutting, the width of joint -cutting is 0.05~0.8mm, and every degree of depth sum to the joint -cutting all is lighter than the wall thickness that the pipe was torn to the energy -absorbing. The utility model provides a rail vehicle is with collision energy -absorbing device is reducing device's initial impact peak value obviously, and effective stroke can reach 100% in theory. And the device can conveniently install at rail vehicle the tip, at the vehicle collision in -process, plays the effect of the collision kinetic energy that dissipates.
Description
Technical field
This utility model belongs to collision energy-absorbing device field, particularly relates to a kind of collision energy-absorbing device used for rail vehicle.
Background technology
In recent years, along with developing rapidly of track traffic, rail traffic vehicles safety problem in operation process is also increasingly paid attention to by people.Meanwhile, the operation of track traffic is the big system of the one such as current collection business, work business, vehicle, signal, service on buses or trains, owing to accidental human error or mechanical breakdown are inevitable.Therefore, train collision accident happens occasionally, and causes huge casualties and property loss.The Impact Resisting Capability improving vehicle is the most effectual way lowering collision accident impact.
At present, when the crash-worthiness carrying out rail vehicle designs, common practice is that the non-manned zone at vehicle two ends is designed as weak separation, manned district is designed as strong rigidity, make vehicle in collision accident, non-manned zone produces big plastic deformation and carrys out Dissipative Collisions energy, and manned district only produces elastic deformation or little plastic deformation, thus ensureing the integrity in space, manned district.
The structure of non-manned zone's dissipation energy is broadly divided into two kinds: carrying endergonic structure and special endergonic structure.Carrying endergonic structure, except acting the effect absorbing collision energy in vehicle collision accident, also to undertake load in normal application, and this structure has that cost is low, simple in construction, but collision repairs loaded down with trivial details, rehabilitation cost high after occurring.Special endergonic structure is mounted in vehicle two ends, usually application does not undertake any load, only when vehicle crashes, Dissipative Collisions energy is carried out by its plastic deformation, due to its stabilization, change the features such as convenient, rehabilitation cost is low, have a wide range of applications in the crash-worthiness of modern railway vehicle designs.
Following prior art document has been provided which a kind of special collision energy-absorbing structure.
Patent application CN201010281420.3 relates to a kind of collision buffering energy absorption device, and its base plate is connected with guide ledges and keeps certain distance with friction guide plate, and processing has the energy-absorbing pipe fitting of axial groove to be sleeved in guide ledges, and substrate is contained in the energy-absorbing pipe fitting other end；The outer surface that groove can be processed at energy-absorbing pipe fitting can also process the inner surface at energy-absorbing pipe fitting, and energy-absorbing pipe fitting can part be torn at groove place when assembling, it is also possible to does not tear.When substrate pressurized, energy-absorbing pipe fitting is driven to move to base plate, in moving process, by the triboabsorption part energy between energy-absorbing pipe fitting and guide ledges, simultaneously, due to from base plate more close to the cross-sectional area of guide ledges more big, energy-absorbing pipe fitting is engraved in axial groove place when a certain and is torn, the process of tearing absorbs again part energy, energy-absorbing pipe fitting is torn part and bends into the space between friction guide plate and base plate afterwards, further through triboabsorption part energy in moving ahead, it is finally reached buffering energy-absorbing effect.This collision buffering energy absorption device simple in construction, processing and manufacturing is easy, with low cost.Absorbing energy charge uniform, capacity is big, it is possible to as the good passive security preventer of one simultaneously.
Additionally, patent of invention CN201310082195.4 also discloses that the uniform novel energy absorption device of a kind of buffering, described energy absorption device is by tearing pipe in advance, guiding friction pipe and drift composition, tearing pipe in advance is thin-wall metal pipe, its one end is truncated cone-shaped funnel-form, there is a cone angle, by bonding or soldering is fixedly arranged in same panel and keeps coaxial for the other end and guiding friction pipe, guiding friction pipe is slightly longer than tears pipe in advance so that it has part to coordinate with drift before energy absorption device is hit, tear in advance and tube wall and port have tearing groove and tearing port, punch is round table-like, steady and smooth with the nearly drift end transition tearing pipe in advance, have in drift and the through hole of the friction circular tube external wall interference fit that leads, play axial positioning action, utilize triboabsorption part energy simultaneously.This device energy absorption relies primarily on drift and squeezes into and tear bulging that pipe causes in advance and subsequent pipe is torn.Specifically, described tear round tube inside diameter to be in advance of a size of 30～80mm, wall thickness h1 be 2～5mm, length L1 be 60～120mm.Compared with traditional energy-absorbing mode, the curling destruction of tearing of pipe is compared broken, axial flexing on energy-absorbing effect or overturns more effective, is also equipped with effective travel length and the stable feature of impulsive force simultaneously.
But the special endergonic structure disclosed in above-mentioned file all determines the collapse energy-absorption mode that wherein can only adopt thin-wall construction, this type structure all can have an obvious impact force peak value when initial conquassation, the damage to subsequent structural can be strengthened, cause very big inconvenience to crash-worthiness structural design.Additionally, the max die travel distance of the collapse energy-absorption mode of thin-wall construction is generally individually smaller than 70%, therefore this structure can not make full use of the effective travel of energy absorption device.
Utility model content
For the shortcoming that existing rail vehicle energy absorption device exists " initial impact forces peak value is high " and " effective travel is little ", this utility model provides a kind of new collision energy-absorbing device used for rail vehicle, this energy absorption device can substantially reduce the initial impact forces peak value of device, and effective travel can reach 100% in theory.And this device is easily installed in rail vehicle end, in vehicle collisions, play the effect of Dissipative Collisions kinetic energy.Additionally, because prior art being all the groove arranging one fixed width on the inwall tearing pipe in advance or outer wall, but present inventor is found by experiment that, such scheme is difficult to tear pipe in advance so that collision rift and tears in order.Therefore, this area is also required to a kind of tear more stable energy absorption device.
Therefore, this utility model provides a kind of collision energy-absorbing device used for rail vehicle, including connector, pedestal and be arranged on the energy-absorbing of connector radial outside and tear pipe, described energy-absorbing tears one or more pairs of joint-cuttings corresponding containing radial position on the inner and outer wall of pipe, every pair of joint-cutting all comprises interior joint-cutting and outer joint-cutting, every joint-cutting is the line style joint-cutting of non-closed, and the width of described joint-cutting is 0.05～0.8mm, and the degree of depth sum of every pair of joint-cutting is respectively less than energy-absorbing and tears the wall thickness of pipe.
In a kind of specific embodiment, the length direction that the length direction of described joint-cutting tears pipe with energy-absorbing is consistent, and the width of joint-cutting is 0.08～0.5mm.In a kind of specific embodiment, the width of described joint-cutting is 0.1～0.3mm, and described joint-cutting includes tearing pipe equally distributed 2～20 pairs of joint-cuttings of circumference along energy-absorbing.
In a kind of specific embodiment, it is metal pipe material that described energy-absorbing tears pipe.
In a kind of specific embodiment, described connector and energy-absorbing are torn length direction one end of pipe and are fixedly connected with collision baffle plate, and the other end is all connected with pedestal, and pedestal contains pedestal endoporus and described connector runs through pedestal endoporus.
In a kind of specific embodiment, described pedestal comprises semi arch structure make the energy-absorbing of collision rift tear pipe split bar can be directed curling under the restriction of this structure.Tearing pipe at energy-absorbing to tear after into strips, the outer circumferential that meeting tears pipe to energy-absorbing under the guide effect of semi-circular structure is curling, thus increasing system energy consumption further and reducing taking up room of energy absorption device.
In a kind of specific embodiment, it is 50～400mm that energy-absorbing tears the diameter of pipe, it is preferred to 100～200mm.The diameter of semi arch structure is 30～350mm, and the diameter of semi arch structure tears the little 20～50mm of the diameter of pipe than energy-absorbing.In this utility model, the diameter of semi arch structure 31 is limited to a specified scope, the bar that splits after tearing can be made to present the suitableeest crimp radius and best rolled state.
In a kind of specific embodiment, described connector 2 is hollow guide pipe, and its axial two ends connect collision baffle plate and pedestal respectively, and guide pipe motion in pedestal endoporus 32 can tear pipe guiding for energy-absorbing after collision occurs.And pedestal and guide pipe are connected and make the guide pipe can axially-movable in pedestal endoporus by shearing bolt for collision rift shearing bolt fracture.In another kind of specific embodiment, described connector 2 does not play the guiding role, described connector 2 is rigid posts or flexible piece, such as iron wire, and play interior guide effect by pedestal 3 as shown in Figure 2 is axially deeply torn in pipe to energy-absorbing one section, the length of this section is tear length of tube 1/5～2/3, it is preferable that 1/3～1/2；Or tearing pipe guiding by outer guide 5 as shown in Figure 5 for energy-absorbing, during installation, outer guide 5 is fixedly mounted on car body.In this utility model, preferred described connector 2 is flexible piece, collision rift its tearing pipe inner bending or curling, in order to reduce taking up room of whole energy absorption device.
In a kind of specific embodiment, described energy-absorbing is torn the upper one end near pedestal of pipe and is provided with tearing port, and the through energy-absorbing of described tearing port tears the wall thickness direction of pipe, the number of tearing port consistent with the logarithm of joint-cutting and the two connect in the axial direction.By the setting of tearing port in this utility model so that energy-absorbing can start along tearing port place to produce stable tearing after tearing tube swelling.
In a kind of specific embodiment, described tearing port and joint-cutting are collectively forming the structure at axially through two ends tearing pipe at energy-absorbing.
In a kind of specific embodiment, it can be 1～50mm that described energy-absorbing tears the wall thickness of pipe 1, but preferably 4～20mm, more preferably 6～20mm.In this utility model, energy-absorbing tears pipe after collision is torn, and under the guiding curling action of semi arch structure 31, splits rule ground curling.The curling radian splitting bar is relevant with the diameter of semi arch structure 31, and diameter and the pipe thickness of also tearing pipe with energy-absorbing are relevant, also with tear after sliver number and tearing port 12 relevant with the number of joint-cutting 11.
In a kind of specific embodiment, the degree of depth of every interior joint-cutting and outer joint-cutting is energy-absorbing and tears the 1/10～2/5 of tube wall thickness.
This utility model at least has the advantages that
1) tear pipe 1 due to energy-absorbing and all contain, at surfaces externally and internally, the paired joint-cutting that width is superfine so that energy-absorbing tears pipe 1 in the process of tearing, and can produce more reliable and more stable deformation.
2) this utility model is arranged in energy-absorbing with the joint-cutting of ad hoc structure and tears on the inside and outside wall of pipe 1, make this utility model that the bigger energy-absorbing of thickness can be set and tear tube wall, thus the energy-absorbing effect of the collision energy-absorbing device that this utility model provides is better in the confined space.Or under the premise realizing identical collision energy-absorbing effect, in the device that this utility model provides energy-absorbing tear pipe 1 can be shorter, thus collision energy-absorbing device is taken up space less.
3) this utility model arranges specific semi arch structure 31 on pedestal 3, described semi arch structure 31 is arranged on energy-absorbing and tears axial one end of pipe 1, the sliver making collision rift can be curling along this compound with regular structure ground under the constraint of pedestal semi arch structure, and specifically to tear the sliver after pipe 1 is torn curling to its peripheral direction in axial one end for energy-absorbing.These research and development so that collision energy-absorbing device entirety takies less space, can also increase the energy absorption of this device simultaneously.
4) this utility model tears coordinating of the pipe 1 certain length with pedestal 3 by energy-absorbing and play basis guide effect, by guide pipe slip in pedestal endoporus after shearing bolt fracture, energy-absorbing can also being torn pipe 1 and act the effect of leading further to, dual guiding is beneficial to energy-absorbing and tears tearing deformation and improve the guidance capability of device of pipe 1.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of collision energy-absorbing device described in the utility model,
Fig. 2 is the sectional structure chart of collision energy-absorbing device described in this utility model Fig. 1,
Fig. 3 is that in this utility model, energy-absorbing tears the axial schematic diagram of pipe,
Fig. 4 is that in this utility model, energy-absorbing tears caliber to schematic diagram,
Fig. 5 is the sectional structure chart of this utility model another kind collision energy-absorbing device；
In figure, 1, energy-absorbing tear pipe, 2, connector, 3, pedestal, 4, collision baffle plate, 5, outer guide, 11, joint-cutting, 111, interior joint-cutting, 112, outer joint-cutting, 12, tearing port, 31, semi arch structure, 32, pedestal endoporus.
Detailed description of the invention
Fig. 1～4 demonstrate this utility model and provide a kind of collision energy-absorbing device used for rail vehicle, including connector 2, pedestal 3 and be arranged on the energy-absorbing of connector radial outside and tear pipe 1, described connector 2 is flexible couplings such as ferrum silk, described energy-absorbing tears eight pairs of joint-cuttings corresponding containing radial position on the inner and outer wall of pipe, every pair of joint-cutting all comprises interior joint-cutting and outer joint-cutting, every joint-cutting is the line style joint-cutting of non-closed, the width of described joint-cutting is 0.1～0.25mm, the degree of depth of every joint-cutting is the 1/5 of the pipe thickness of energy-absorbing pipe, thus the degree of depth sum of every pair of joint-cutting is energy-absorbing tears the 2/5 of the wall thickness of pipe.Described connector and energy-absorbing are torn length direction one end of pipe and are fixedly connected with collision baffle plate, and the other end is all connected with pedestal, and pedestal contains pedestal endoporus while described connector runs through pedestal endoporus.Described pedestal comprises the semi arch structure that cross section is semicircle make the energy-absorbing of collision rift tear pipe split bar can be directed curling under the restriction of this structure, thus increasing system energy consumption further and reducing taking up room of energy absorption device.In figure, it is 150mm that energy-absorbing tears the diameter of pipe, and the diameter of semi arch structure is 125mm.Described energy-absorbing is torn the upper one end near pedestal of pipe and is provided with eight tearing ports that through energy-absorbing tears the wall thickness direction of pipe, and tearing port connects in the axial direction with every pair of joint-cutting, and tearing port and joint-cutting are collectively forming the structure at axially through two ends tearing pipe at energy-absorbing.It is 10mm that energy-absorbing described in figure tears the wall thickness of pipe 1.
In this utility model, the line style joint-cutting of described non-closed refers to that the head and the tail of every joint-cutting are not attached to, for instance be not annular closed joint-cutting.Described joint-cutting line can be the various ways such as straight line, curve and broken line, and when described energy-absorbing tears pipe for cylindrical tube, described joint-cutting such as tearing the straight line that pipe axis is parallel with energy-absorbing；When described energy-absorbing tears pipe for round platform pipe, described joint-cutting such as moving towards consistent straight line with round platform outer wall.When described energy-absorbing tears the pipe fitting that pipe is appearance curved surface, described joint-cutting may be configured as curve-like equally.In a kind of specific embodiment, every joint-cutting is tears, along energy-absorbing, the joint-cutting that pipe 1 length direction extends.In this utility model, energy-absorbing tears the described joint-cutting that can pass through line cutting formation certain depth on pipe 1, for instance Wire EDM.
Because of the width that the width of groove of the prior art is noticeably greater than in this utility model joint-cutting, inventors herein have recognized that above-mentioned device of the prior art is all first tear tearing pipe distending in advance again, in the process of distending, the plastic deformation tearing pipe in advance is concentrated in groove place, rather than be evenly distributed in the circumference tearing pipe in advance, thus the energy-absorbing effect of this device of collision rift is limited.And the energy-absorbing in this utility model is torn pipe and do not had the process of distending, directly according to the guiding of joint-cutting, energy absorbing tube is torn.Because the width of joint-cutting is only small in this utility model, the precision of width of slit and the degree of depth can be significantly high, such as up to 0.001mm level, tear the existence of front joint-cutting energy-absorbing will not be torn the structure of pipe produce impact, thus in this utility model, energy-absorbing is torn the thickness of pipe and can be set to be significantly greater than in prior art and tear in advance the wall thickness of pipe.
This utility model is provided with, by the outer wall and inwall tearing pipe at energy-absorbing, the joint-cutting that width is only small so that can accurately tear vertically when tearing.Tearing in process, joint-cutting will not come in contact with pedestal, can form more stable tearing.
In this utility model, when connector is guide pipe, guide pipe is connected by shearing bolt with pedestal, and when vehicle normal use, shearing bolt plays reinforcement energy-absorbing indirectly and tears the effect being connected between pipe 1 with pedestal 3；When vehicle collision, shearing bolt and cut off, guide pipe slides in pedestal endoporus 32, energy-absorbing is torn pipe 1 and play the guiding role.In a kind of specific embodiment, described collision energy-absorbing device is collision energy-absorbing device used for rail vehicle, and described collision baffle plate 4 is arranged on the rear and front end of rail vehicle length direction, and pedestal 3 is fixed with rail vehicle body and is connected.
In this utility model one specific embodiment, 3 basic guide effects of pedestal or a complete guide effect, when pedestal 3 only plays basis guide effect, it is that energy-absorbing tears the 2～30% of pipe 1 pipe range that energy-absorbing tears the assembling length of pipe 1 and pedestal 3, it is preferred to 5～20%.Energy-absorbing tears the assembling of pipe 1 and pedestal 3 when playing basis guide effect, and under the fine guide effect of guide pipe 2 or outer guide 5, it is more stable that energy-absorbing tears tearing of pipe 1.In this utility model, the break limit shearing bolt tears the limit of tearing of pipe 1 much smaller than energy-absorbing, thus tears shearing bolt before pipe 1 is torn at energy-absorbing and rupture.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (10)
1. a collision energy-absorbing device used for rail vehicle, including connector (2), pedestal (3) and be arranged on the energy-absorbing of connector (2) radial outside and tear pipe (1), described energy-absorbing tears one or more pairs of joint-cuttings (11) corresponding containing radial position on the inner and outer wall of pipe (1), every pair of joint-cutting (11) all comprises interior joint-cutting (111) and outer joint-cutting (112), every joint-cutting is the line style joint-cutting of non-closed, the width of described joint-cutting is 0.05～0.8mm, the degree of depth sum of every pair of joint-cutting is respectively less than energy-absorbing and tears the wall thickness of pipe (1).
2. collision energy-absorbing device according to claim 1, it is characterised in that the length direction that the length direction of described joint-cutting tears pipe (1) with energy-absorbing is consistent, and the width of joint-cutting is 0.08～0.5mm.
3. collision energy-absorbing device according to claim 2, it is characterised in that the width of described joint-cutting is 0.1～0.3mm, and described joint-cutting includes tearing pipe (1) equally distributed 2～20 pairs of joint-cuttings of circumference along energy-absorbing.
4. collision energy-absorbing device according to any one in claims 1 to 3, it is characterized in that, described connector (2) and energy-absorbing are torn length direction one end of pipe (1) and are fixedly connected with collision baffle plate (4), the other end is all connected with pedestal (3), and pedestal (3) runs through pedestal endoporus containing pedestal endoporus (32) and described connector (2).
5. collision energy-absorbing device according to any one in claims 1 to 3, it is characterized in that, described pedestal (3) comprises semi arch structure (31) make the energy-absorbing of collision rift tear pipe (1) split bar can be directed curling under the restriction of this structure.
6. collision energy-absorbing device according to claim 5, it is characterized in that, it is 50～400mm that energy-absorbing tears the diameter of pipe (1), the diameter of semi arch structure (31) is 30～350mm, and the diameter of semi arch structure (31) tears the little 20～50mm of the diameter of pipe (1) than energy-absorbing.
7. collision energy-absorbing device according to any one in claims 1 to 3, it is characterized in that, described energy-absorbing is torn the upper one end near pedestal (3) of pipe (1) and is provided with tearing port (12), described tearing port (12) through energy-absorbing tears the wall thickness direction of pipe (1), the number of tearing port (12) consistent with the logarithm of joint-cutting (11) and the two connect in the axial direction.
8. collision energy-absorbing device according to claim 7, it is characterised in that described tearing port (12) and joint-cutting (11) are collectively forming the structure at axially through two ends tearing pipe (1) at energy-absorbing.
9. collision energy-absorbing device according to any one in claims 1 to 3, it is characterised in that it is 6～20mm that described energy-absorbing tears the wall thickness of pipe (1).
10. collision energy-absorbing device according to any one in claims 1 to 3, it is characterised in that the degree of depth of every interior joint-cutting (111) and outer joint-cutting (112) is energy-absorbing and tears the 1/10～2/5 of pipe (1) pipe thickness.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620155254.5U CN205396114U (en) | 2016-03-01 | 2016-03-01 | Rail vehicle is with collision energy -absorbing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620155254.5U CN205396114U (en) | 2016-03-01 | 2016-03-01 | Rail vehicle is with collision energy -absorbing device |
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| CN205396114U true CN205396114U (en) | 2016-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105644579A (en) * | 2016-03-01 | 2016-06-08 | 中南大学 | Collision energy absorption device for railway vehicle |
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2016
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105644579A (en) * | 2016-03-01 | 2016-06-08 | 中南大学 | Collision energy absorption device for railway vehicle |
| WO2017148145A1 (en) * | 2016-03-01 | 2017-09-08 | 中南大学 | Collision energy absorption apparatus for rail vehicles |
| US10556603B2 (en) | 2016-03-01 | 2020-02-11 | Central South University | Collision energy absorption apparatus for rail vehicles |
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