KR20170077752A - Crashworthy Post Utilizing Conservation of Linear Momentum and Energy Absorbing Module, and Method for Reducing Car Impact using such Crashworthy Post - Google Patents
Crashworthy Post Utilizing Conservation of Linear Momentum and Energy Absorbing Module, and Method for Reducing Car Impact using such Crashworthy Post Download PDFInfo
- Publication number
- KR20170077752A KR20170077752A KR1020160006316A KR20160006316A KR20170077752A KR 20170077752 A KR20170077752 A KR 20170077752A KR 1020160006316 A KR1020160006316 A KR 1020160006316A KR 20160006316 A KR20160006316 A KR 20160006316A KR 20170077752 A KR20170077752 A KR 20170077752A
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- South Korea
- Prior art keywords
- vehicle
- main body
- guide key
- guide
- base member
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
- E01F15/146—Means for vehicle stopping using impact energy absorbers fixed arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
While the vehicle collides with the pillar main body and moves in a state where the vehicle and the pillar main body are integrated with each other, the linear motion amount of the vehicle is transmitted to the pillar main body so that a part of the impact energy is primarily scattered, The impact energy absorbing module or the Energy Absorbing Module (abbreviated as "EAM" hereinafter) provided on the base (base) while moving rearward is deformed to impact the rest of the vehicle impact energy, And more particularly, to a method for reducing shock when a vehicle striking collision occurs.
Description
BACKGROUND OF THE
Traffic accidents in which vehicles collide with facilities installed on roads (hereinafter referred to as "roadside facilities") frequently occur. In order to safeguard occupants and vehicles from the impact of vehicles on roadside facilities, it is most desirable to install the roadside facilities outside the roadside hazardous area. However, not only are there space constraints to install such roadside facilities, There is a restriction that it must be installed near the roadside in order to do the work.
Particularly, among the facilities of the roadside, for a support made of a vertical member such as a telephone pole for installing electric wires, an illuminator for lighting (a light pole) for installing a light, a road sign for installing a road sign, Protective measures are very urgent. Generally, when a vehicle collides with a small landing pillar, an excessive deformation of a small landing pillar occurs, and thus the pillar or the bent pillar itself is a serious risk to the safety of the vehicle occupant. However, The amount of the impact acting on the vehicle is large, thereby causing fatal damage not only to the vehicle but also to the occupant.
A countermeasure based on the concept of breakaway support has been proposed in the past in order to minimize the risk of collision of a vehicle with a vehicle exposed to the road side. "Breakaway Support" is an alternative to stiffening the connection between the stanchions and the foundation (base), ensuring the structural safety of the wind load, but also separating the stanchions from the foundation at the connections during impact loading, The basic concept is to eliminate the risk factors for the passengers by minimizing the speed change. However, since the conventional support with the concept of "Breakaway Support" is very likely to cause secondary damage after a vehicle collision, it is difficult to apply the support to a large-sized land support have. Especially, in the conventional support in which the concept of "brake sign support" is introduced, it is necessary to minimize the working distance in the event of a vehicle collision, and there is a desperate need to reduce the possibility of a secondary collision.
On the other hand, an energy absorption post (hereinafter abbreviated as "EAP ") has been proposed as a prior art. The conventional shock absorbing strut minimizes the damage of the collision vehicle and the occupant by collapsing the strut when the vehicle collides. The prop are basically structurally safe against wind loads. On the other hand, in order to secure the safety of the occupant of the collision vehicle, when the vehicle collides with the support, the support should be easily destroyed and the structural strength of the support should be weakened. The conventional EAP corresponds to a method of sacrificing the structural strength of the landing inevitably in order to minimize the damage of the collided vehicle and the occupant. As a result, since the conventional shock absorbing strut has sacrificed structural strength, it has a problem in that it has a structural weakness and a structural weakness against a load such as a wind load. There is an attempt to use the materials that make up the land as a composite material, but it is not yet possible to completely solve the above problems.
In another method, a method of attaching a shock absorbing member or an impact absorbing module to a surface of a strut is suggested. As an example of such a conventional technique, Korean Patent Laid-Open Publication No. 10-2003-86152 discloses a technique of installing a tubular member containing fluid in the outside of a column, entitled " However, in the case of such a conventional technique, a desired shock absorbing effect can be expected only when the shock absorbing module or the like is a predetermined thickness or more. However, due to space restrictions, there is a restriction on the size and thickness of the shock absorbing module, So that sufficient performance may not be exhibited. In addition, there is a problem that the aesthetic appearance is hindered by the presence of the attachment on the outer surface of the support.
The present invention has been developed in order to overcome the limitations and problems of the prior art as described above, and it is an object of the present invention to provide an air conditioner which can secure sufficient safety for a passenger when a vehicle collides with a landing, The present invention relates to a technique for enabling a user to use a computer program.
Particularly, the present invention minimizes the working distance (the distance from when the vehicle collides and stops) when the vehicle collides with the support, greatly reduces the possibility of secondary collision, The present invention also aims to provide a technology that can be applied to a large-sized landing as well as to a landing installed in a large-sized landing.
More particularly, the present invention relates to a control column capable of effectively absorbing an impact due to a collision of a vehicle without reducing the structural strength of the column regardless of the size (size) of the column and the installation place, And to provide an efficient method which can reduce the amount of water.
In order to achieve the above object, the present invention reduces the speed of an impacting vehicle by using inertia of a pillar main body itself at the initial stage of a vehicle collision, and then installs an energy absorption module ("EAM" And a method of reducing an impact at the time of collision of a vehicle support by using the same is provided.
Specifically, in the present invention, the present invention includes a base member and a support main body vertically installed on the base member, wherein the support main body is provided on the base member so as to be movable in the rearward direction. When the vehicle collides with the support main body, Wherein the body is moved together to stop the vehicle through absorption and dissipation of collision energy due to collision of the vehicle.
Particularly, in the present invention, there are provided a base and a support body vertically erected and installed on the base; A guide key protruding from the lower end of the support main body; Wherein a guide passage is formed in the base so as to extend in a rearward direction with a guide key inserted therein; An impact energy absorbing member (EAM), which is deformed and absorbs energy when the guide key is collided, is inserted into the guide passage rearwardly of the support body; When the vehicle collides with the support main body, the vehicle and the support main body move together, thereby causing the guide key to impact the impact energy absorbing member to stop the vehicle by absorbing and dissipating the impact energy due to the impact energy absorbing member being deformed The present invention relates to a sewing machine.
The present invention also provides a method for reducing an impact generated when a vehicle collides with a support, comprising stopping the vehicle by absorbing and dissipating the impact energy of the vehicle using the control pillar as described above.
In the gypsum strut of the present invention and the method of reducing collision impact of a vehicle using the same, the guide key has an inverted T shape formed by a vertical portion and a horizontal portion coupled to a lower end of the vertical portion; The cross-sectional shape of the guide passage may also be formed in an inverted T shape corresponding to the shape of the guide key, and a plate-shaped base plate disposed on the upper surface of the base at the lower end of the support body; The guide key may be integrally coupled to the lower surface of the base plate.
Further, in the present invention, the impact energy absorbing member is disposed in the guide passage from a position spaced apart from the guide key in the rearward direction by a distance from the guide key, and when the vehicle collides with the support body, the vehicle and the support body are integrated Absorption and dissipation of primary collision energy occurs while moving by the distance of separation, and the guide key impacts the impact energy absorbing member after the vehicle and the support main body have passed the separation distance.
In the case of the present invention, at the initial stage of a vehicle collision, the inertia of the propellant itself is used to reduce the speed of the collided vehicle, and then the vehicle is stopped using the collision energy and kinetic energy absorbing capability of the collision energy absorbing member (EAM) To ensure the safety of the passenger.
Particularly, in the germanium strut of the present invention, the coupling between the strut body and the base is continuously maintained even after the vehicle collides with the strut body, and therefore, due to the collision, breakage or excessive deformation of the strut body caused by the collision, The second collision between the pillar main body and the vehicle can be effectively prevented.
In addition, in the insect control strut of the present invention, since the pillar main body exhibits sufficient resistance against pulling or conduction in a state before the vehicle collides, the load of structural strength of the pillar for shock absorption and the resulting wind load It is possible to solve all of the disadvantages of the structural weakness of the system.
Further, since the retractable pavement according to the present invention exerts a useful performance regardless of the size (scale) and installation position of the pillar main body, it can be easily applied not only to a large pillar but also to a pillar .
Further, in the gum-strut pillar according to the present invention, since the strength and the installation length of the impact energy absorbing member are adjusted, it is possible to satisfy the safety of the passenger under various collision conditions, have.
1 is a schematic perspective view showing a configuration of a stapler according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view along line AA of FIG. 1 showing the combination of a strut body and a base in a gumming strut according to the present invention shown in FIG.
FIG. 3 is a schematic cross-sectional view taken along line BB of FIG. 1 showing the configuration of a guide passage or the like in a companion bed according to the present invention shown in FIG.
FIG. 4 is a schematic perspective view of a lower portion of a supporting column showing the shape of an inverted T-shaped guide key provided in the insect control strut of the present invention in detail.
FIG. 5 is a schematic half cross-sectional perspective view according to line CC of FIG. 1 showing the strut body and base combination structure in the gumming strut according to the present invention shown in FIG.
6 is a schematic perspective view showing that the strut body is coupled to the base in the gum stalk according to another embodiment of the present invention.
Fig. 7 is a schematic perspective view showing a state after the state of the support body shown in Fig. 6 is coupled to the base; Fig.
FIG. 8 is a schematic cross-sectional view taken along the line DD of FIG. 7 showing the configuration of a guide passage or the like in the gumming strut according to the present invention shown in FIG.
9 to 14 are a schematic plan view sequentially showing the behavior of the vehicle and the column main body when the vehicle collides with the gypsum strut according to the present invention, and a schematic lateral sectional view corresponding to Fig. 8, respectively.
15 is a graph showing the time history of the acceleration experienced by the vehicle during the collision according to the simulation test results of the insect control pillars of the present invention.
FIG. 16 is a graph showing a change in speed of a vehicle according to a time zone when a vehicle collides with a checkerboard support according to the present invention. FIG.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby. In the present specification, "rearward" means the direction in which the vehicle travels toward the support, that is, the direction in which the vehicle travels. That is, the direction indicated by the arrow K in Fig. 1 becomes "rearward direction ". Therefore, in the present specification, "forward" means a direction in which the vehicle is viewed when the vehicle runs toward the support. In the present specification, the term "lateral direction " means a direction perpendicular to the backward direction or the forward direction on the plane.
The holding body of the present invention is provided with a base member and a holding body vertically installed on the base member, wherein the holding body is provided on the base member so as to be movable in the rearward direction. When the vehicle collides with the holding body, And the stanchion main body move together to stop the vehicle through the absorption and dissipation of the collision energy due to the collision of the vehicle.
More specifically, in the initial stage of collision of the vehicle according to the present invention, the velocity of the collision vehicle is reduced by using the inertia of the pillar main body itself, and thereafter, by using the impact absorbing capability of the EAM embedded in the base, And the energy is efficiently dissipated to stop the vehicle, thereby securing the safety of the passenger.
FIG. 1 is a schematic perspective view showing a construction of a
As shown in the figure, the
A
The
In the case where the
Fig. 5 is a schematic half cross-sectional perspective view in the forward direction according to the line CC of Fig. 1 showing an example of a configuration in which the
6 is a schematic perspective view showing a state in which a
The
In the present invention, the EAM (4) is provided in the guide passage (3). The
Next, with reference to Figs. 9 to 14, a method for reducing the straddle collision impact of a vehicle using the groping
The
Therefore, when the vehicle collides with the column
9 (a) is a schematic top plan view of the vehicle before colliding with the
9 to 11, when the vehicle collides with the
The guide key 11 moves in the rearward direction along the
Since the pillar
As a first step in accordance with the vehicle collision, the linear momentum of the vehicle is transmitted to the support
The
Particularly, in the
The
Further, in the case of the insecticide strut according to the present invention, the safety of the passenger can be satisfied under various collision conditions by adjusting the strength and the installation length (the length filled in the guide passage) of the
Next, a description will be given of a process of verifying performance of CC2 grade (0.9 ton-80 km / h) in frontal impact of a shock absorbing facility and a result thereof through a simulation test for the
In the simulation test according to the present invention, a weight body of 0.9 ton in a holding
The vertical height of the
FIG. 15 is a graph showing the time history of the acceleration experienced during the collision of the vehicle according to the result of the simulation test for the above conditions, and FIG. 16 is a graph showing the speed change of the vehicle by time zone have. In FIG. 15, the X-axis represents time (unit: second), and the Y-axis represents acceleration. In FIGS. 15 and 16, the Post-Impact Head Deceleration (PHD) and the Theoretical Head Impact Velocity (THIV) represent a known "occupant safety index" indicating how safe the occupant is.
As can be seen from Figs. 15 and 16, in the above simulation test, the collided vehicle is plastically deformed while colliding for 0.05 second, and becomes integral with the
In this collision, THIV was 41.9km / h from 0.094sec after collision, and it was confirmed that it is less than 44km / h of performance standard of crush cushion. In particular, PHD was found to be very safe compared to the permissible value of 20g, which is 13.2g at 0.2456sec-0.2556sec, immediately after the impact of the inverted T-shaped guide key on the EAM.
The results of the simulation test show that in the gypsum strut according to the present invention, the vehicle collides with the pillar main body in the first half of the collision, thereby transferring the momentum of the vehicle to the pillar main body, thereby lowering the speed of the vehicle, It is possible to completely stop the vehicle.
1: holding body
2: base member
3: guide passage
4: EAM
10: Base plate
11: Guide key
100: insect pillars
Claims (9)
The support main body 1 is provided on the base member 2 so as to be movable in the rear direction so that when the vehicle collides with the support main body 1, the vehicle and the support main body 1 move together, And the vehicle is stopped through absorption and dissipation of energy.
A guide key 11 protrudes from the lower end of the column main body 1;
A guide passage (3) is formed in the base member (2) so that the guide key (11) is inserted and extended in a rearward direction;
An impact energy absorbing member (EAM) 4, which is deformed and absorbs energy when the guide key 11 collides, is inserted into the guide passage 3 to the rear of the support body 1;
The collision energy absorbing member 4 is deformed by the impact of the guide key 11 against the impact energy absorbing member 4 as the vehicle collides with the pillar main body 1 and the vehicle body and the pillar main body 1 move together, Characterized in that the collision energy absorption and dissipation takes place.
The guide key 11 has an inverted T shape formed by a vertical portion and a horizontal portion coupled to a lower end of the vertical portion;
Wherein the sectional shape of the guide passage (3) is also an inverted T shape corresponding to the shape of the guide key (11).
A plate-shaped base plate 10 placed on the upper surface of the foundation member 2 is provided at the lower end of the column main body 1;
Wherein the guide key (11) is integrally coupled to the lower surface of the base plate (10).
The impact energy absorbing member 4 is inserted and disposed in the guide passage 3 from a position spaced apart from the guide key 11 by a distance L in the backward direction,
When the vehicle collides with the column main body 1, primary collision energy is absorbed and dissipated while the vehicle and the column main body 1 are integrated and moved together by the distance L, Absorbs the impact energy absorbing member (4) after the guide key (11) has passed the separation distance (L).
An insertion port 210 into which the guide key 11 can be inserted is formed at the viewpoint of the guide path 3;
Characterized in that the support body (1) is vertically installed on the base member (2) by inserting the guide key (11) into the insertion port (210) in the vertical direction.
The guide passage 3 is extended to the front side surface of the base member 2 so that the guide key 11 is inserted into the guide passage 3 from the front side surface side of the base member 2, Is provided vertically on the base member (2).
Wherein the plurality of pipe members are continuous in the longitudinal direction and disposed in the guide passage (3) to form the impact energy absorbing member (4).
The strut comprises a base member (2) and a control strut (100) having a strut body (1) vertically erected and installed on the base member (2);
When the vehicle collides with the pillar main body (1), the vehicle and the column body (1) move together to stop the vehicle by absorbing and dissipating impact energy.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR20150187485 | 2015-12-28 | ||
KR1020150187485 | 2015-12-28 |
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KR1020160006316A KR20170077752A (en) | 2015-12-28 | 2016-01-19 | Crashworthy Post Utilizing Conservation of Linear Momentum and Energy Absorbing Module, and Method for Reducing Car Impact using such Crashworthy Post |
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Cited By (6)
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KR101868552B1 (en) | 2017-11-14 | 2018-06-19 | 한국건설기술연구원 | Crashworthy Post, Sliding Rail Assembly therefor, and Method for Reducing Car Impact using such Crashworthy Post |
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2016
- 2016-01-19 KR KR1020160006316A patent/KR20170077752A/en not_active Application Discontinuation
Cited By (11)
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KR101868552B1 (en) | 2017-11-14 | 2018-06-19 | 한국건설기술연구원 | Crashworthy Post, Sliding Rail Assembly therefor, and Method for Reducing Car Impact using such Crashworthy Post |
KR102009361B1 (en) | 2018-06-08 | 2019-08-12 | 한국건설기술연구원 | Crashworthy Post having Sliding Rail Assembly, and Method for Reducing Car Impact using such Crashworthy Post |
CN108914837A (en) * | 2018-07-04 | 2018-11-30 | 李娜 | A kind of municipal works use the road pier with buffer function |
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CN109183673A (en) * | 2018-10-22 | 2019-01-11 | 深圳市福瑞禧科技发展有限公司 | A kind of limit for width road column |
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