EP2966225A1 - Traffic protection device for road traffic - Google Patents

Abstract

Traffic safety device (1) for road traffic with an impact damping device (10), wherein the impact damping device (10) is attachable to or attached to a vehicle or at least provided as a part of a vehicle trailer (11), wherein at least three juxtaposed rods (12, 12; 12 ', 12 ") are provided, an impact device (13, 14, 14', 14") being provided which is movable relative to the rods (12, 12 ', 12 ") along the longitudinal axis (15) of the rods (12 , 12 ', 12 "), with each rod (12, 12', 12") fixed relative to the impactor (13, 14, 14 ', 14 ") when moving in the longitudinal axis (15) of FIG respective rod (12, 12 ', 12 ") the respective rod (12, 12', 12") mechanically changing Bewegungsenergiekonversionsvorrichtung (14, 14 ', 14 ") is provided.

Description

The invention relates to a traffic safety device for road traffic with an impact damping device, wherein the impact damping device is attachable to a vehicle or is attached, or at least provided as part of a vehicle trailer.

In road traffic, it is sometimes necessary to secure tracks or secure construction sites. This usually takes place with a traffic safety device, for example a vehicle, to which an information sign is attached. Unfortunately, it comes again and again to accidents of colliding vehicles in such traffic safety devices. In order to avoid these personal injuries, impact damping devices are provided which compensate for the kinetic energy of the approaching vehicles in such a way that predefinable limit values for negative acceleration of the approaching vehicle are not exceeded.

For example, this is off PT 1001091 E an impact damping device is known, which is attachable to a truck. Furthermore, it is off US 2006/0151986 A1 a vehicle trailer known, which is designed as a crash cushioning device. Upon impact of a vehicle at the rear of the vehicle trailer rods of the vehicle trailer, which are arranged longitudinally in the direction of travel, cut open. The kinetic energy is thus expended in an energy for mechanically changing the rods.

It is an object of the present invention to provide a secure traffic safety device that further minimizes the risk of injury to a person participating in road traffic.

This object is achieved by a traffic safety device for road traffic with an impact damping device, wherein the impact damping device is attachable to a vehicle or is attached or at least provided as part of a vehicle trailer, wherein at least three juxtaposed rods are provided, wherein an impact device is provided which is movable relative to the rods along the longitudinal axis of the rods, wherein to each rod is provided a relative to the impactor fixed upon movement in the longitudinal axis of the respective rod, the respective rod mechanically varying kinetic energy conversion device.

By at least three juxtaposed rods and vehicles with a very high kinetic energy can be braked relatively gently in an impact. In addition, the use of at least three juxtaposed rods effectively the risk of breaking out of the bars reduced from the longitudinal axial direction. The rods could also be referred to as impact energy conversion rods. By changing the shape and / or the structure of the respective rod namely kinetic energy is converted into mechanical or thermal energy.

In the context of the invention, a rod or rods are formed as a hollow body. Preferably, the rods are rectangular in cross section.

The kinetic energy conversion device may be configured to cut the respective bar, as known in the art. Preferably, however, when the kinetic energy conversion device is configured, upon movement in the direction of the longitudinal axis of the rod, it is preferable to compress the rod together in a direction transverse to the longitudinal axis.

For this purpose, for example, it is provided that the kinetic energy conversion device is configured such that one end of the rod can be received. At least one wall of the kinetic energy conversion device is conically tapered to an opposite wall. Upon impact of a vehicle with the impactor, the kinetic energy conversion device is then further pushed onto the respective rod in the direction of the longitudinal axis of the rod, the rod then being compressed in the region of the conical wall, thereby transferring kinetic energy into the deformation of the rod.

Preferably, the rods are arranged parallel to each other.

Preferably, the kinetic energy conversion device encloses the rod. This measure prevents the pole can break out to one side.

Preferably, the kinetic energy conversion device has on one side, which is arranged in particular transversely to the longitudinal axis of the rod, an opening through which the mechanically changed rod can pass or pass. This prevents that the mechanically modified rod can injure persons in approaching vehicles.

The rod preferably has a rectangular, in particular preferably a square cross section. The kinetic energy conversion device surrounding the rod accordingly preferably also has a rectangular shape or, in particular, preferably a square shape.

Preferably, a sliding sleeve, for example of a plastic material, is provided at the entrance area of the kinetic energy conversion device. The kinetic energy conversion device is preferably made of a steel, preferably of a solid steel alloy. The respective rod is preferably formed of steel.

Preferably, the stability of the respective rod is varied in the longitudinal direction. In this way, it can be predetermined which negative acceleration an approaching vehicle is exerted in the course of starting or in the course of moving the kinetic energy conversion device on the respective rod in the direction of travel of the vehicle or in the direction of the longitudinal axis of the respective rod. For example, the wall of the rod can be varied. It can also be provided to provide recesses or holes in the respective rod.

Preferably, at least one connected to a rod device, in particular a support for traffic signals, an underrun protection, a wheel axle, a wheel arch and / or a hydraulic cylinder, provided at the connection point to the rod with a shear body or has a Abscherkörper, which for shearing the rod is engageable or brought into operative connection with the kinetic energy conversion device. For this purpose, the shearing body can, for example, have a tab or a bolt which comes into connection with the kinetic energy conversion device, whereby a force is exerted on the respective device connected to the rod, which breaks off, for example, a weld or a screw connection.

Preferably, the kinetic energy conversion device has a shearing plate 30, which is preferably chamfered or bevelled in the direction of movement of the kinetic energy conversion device.

Since the rods are relatively long due to the amount of kinetic energy to be absorbed, it is preferred for respective vehicles provided with an impact absorber when driving the motor vehicle when each rod has a hinge by means of which a part of the impact damping device is highly hinged. This shortens the length of the traffic safety device or of the vehicle that has the traffic safety device or the impact damping device.

Preferably, the hinge is also designed to be sheared by the kinetic energy conversion device. The hinge is arranged to move relative to the respective one upon movement of the kinetic energy conversion device Rod comes into the effective range of the hinge, so that it is sheared off.

The fold-up part of the impact damping device is very efficient and easy to fold up if at least one hydraulic cylinder, in particular one hydraulic cylinder attached to the outer rods, is provided for moving the foldable part of the impact damping device.

Preferably, at least one hydraulic synchronizing cylinder, preferably two or three hydraulic synchronizing cylinders, serves for fixing the foldable part of the impact damping device. This can compensate or withstand very high forces, which can occur in particular during transport from a folded-up impact damping device. The one or more hydraulic synchronizing cylinders are designed so that they can be extended or compressed with open valve, without much effort, so that the hydraulic synchronizing cylinder, the movement of the hydraulic cylinders, which are provided as actuators to fold up the hinged part of the impact damping device or shut down, join in. Once an end position, for example, the folded-up end position of the impact damping device is reached, the valve is closed, whereby the length of the expansion cylinder or the same does not change and without the hydraulic cylinder must continue to be operated, the foldable part of the impact damping remains folded.

The impact device preferably has a contact fixing element on the front side. This prevents an approaching vehicle from slipping sideways or upwards or downwards on impact from the impact device and thus undefined braking operations be caused.

Further features of the invention will become apparent from the description of embodiments according to the invention together with the claims and the accompanying drawings. Embodiments of the invention may satisfy individual features or a combination of several features.

Figur 1

eine schematische dreidimensionale Darstellung eines Fahrzeuganhängers mit erfindungsgemäßer Verkehrssicherungseinrichtung,

Figur 2

eine schematische Ausschnittsdarstellung eines Teils der Figur 1 aus einer anderen Perspektive,

Figur 3

eine schematische Ausschnittsdarstellung aus Figur 1 aus einer anderen Perspektive,

Figur 4

eine Bewegungsenergiekonversionsvorrichtung gemäß der Erfindung,

Figur 5

eine schematische Seitenansicht einer Aufpralldämpfeinrichtung in einer anderen Ausführungsform,

Figur 6

eine schematische dreidimensionale Darstellung der Aufpralldämpfeinrichtung aus Figur 5,

Figur 7

eine schematische Draufsicht der Aufpralldämpfeinrichtung aus Figur 5 und

Figur 8

eine schematische Seitenansicht der Aufpralldämpfeinrichtung aus Figur 5 im hochgeklappten Zustand.

The invention will be described below without limiting the general inventive idea by means of embodiments with reference to the drawings, reference being expressly made to the drawings with respect to all in the text unspecified details of the invention. Show it:

FIG. 1

a schematic three-dimensional representation of a vehicle trailer with inventive traffic safety device,

FIG. 2

a schematic sectional view of a portion of FIG. 1 from a different perspective,

FIG. 3

a schematic sectional view of FIG. 1 from a different perspective,

FIG. 4

a kinetic energy conversion device according to the invention,

FIG. 5

a schematic side view of an impact damping device in another embodiment,

FIG. 6

a schematic three-dimensional representation of the impact damping device FIG. 5 .

FIG. 7

a schematic plan view of the impact damping from FIG. 5 and

FIG. 8

a schematic side view of the impact damping device FIG. 5 in the folded state.

In the drawings, the same or similar elements and / or parts are provided with the same reference numerals, so that apart from a new idea each.

FIG. 1 schematically shows a trailer 11, which is designed as traffic safety device 1. On the trailer, a traffic signal 19 is shown, which is partially folded down. This is the state in which the traffic safety device 1 is coupled to a towing vehicle and is driven to its place of use. At the site of the vehicle trailer 11 serves as traffic safety device 1. The towing vehicle then has a mass that is sufficiently large to withstand an impact. Alternatively, a correspondingly high mass or a concrete element can be applied to the vehicle trailer.

The traffic safety device 1 has an impact damping device 10. The impact damping device 10 has an impact plate 13 on which vehicles can impact. Upon a collision of a vehicle with the impact plate 13, the impact plate 13 is displaced along with the squeezing devices 14, 14 ', 14 ", which are generally referred to as kinetic energy conversion devices, in the longitudinal direction or in the direction of the longitudinal axis 15 of the rods 12, 12'. 12 ". In each case, a squeezing device 14, 14 ', 14 "is in operative connection with a rod 12, 12', 12". Here are the rods 12, 12 ', 12 ", for example each may have a rectangular cross-section squeezed in the respective squeezing device 14, 14 ', 14 ", whereby kinetic energy of the vehicle in the mechanical change of the rods 12, 12', 12" is converted, that is, for example, converted into potential energy and heat ,

In addition, the vehicle trailer 11 also has a lateral underrun protection 20, which is fastened to the outer rods 12 and 12 ", for example riveted or screwed in. In addition, an axle 21 is provided on which wheels with a wheel suspension 22 are provided.

FIG. 2 shows a schematic three-dimensional enlarged view of a part FIG. 1 from a different perspective. It is more clearly shown the squeezing device 14, in which the rod 12 is mounted. In order to provide an efficient introduction of the rod 12 in the crimping device 14, a sliding sleeve 31 is provided for example of a plastic. It is also a curved wall 32 is shown, which serves to deflect the squeezed rod 12 in one direction, so that the mechanically modified rod does not reach the area of the approaching vehicle, so that no person can be injured by the mechanically modified rod 12 , For example, it is provided that the mechanically modified rod 12 is derived downward or to one side.

In FIG. 2 is still a shearing plate 30 shown, which serves, for example, the underride guard 20 and the wheel housing 22 and the wheel axle 21 to shear, if a vehicle ascends on the impact plate 13.

In FIG. 3 is schematically a further enlarged three-dimensional representation FIG. 1 shown from a different perspective. In particular, tabs 25 are shown here which can engage the shearing plate 30, so that the corresponding elements associated therewith, as in FIG FIG. 3 the underrun protection 20, the wheel housing 22 and the wheel axle 21 can be sheared off. As a result, the risk of accidents of persons is further reduced.

FIG. 4 shows a kinetic energy conversion device 14 according to the invention, which is designed as a squeezing device 14. On the left side of the sliding sleeve 31 is shown, in which the respective rod can be introduced. Inside the crimping device 14, at least one wall is formed obliquely inwardly, more preferably two opposite walls are formed obliquely inwardly, namely the walls which are in extension of the curved walls 32, 32 '. As a result, the respective bar is efficiently compressed during a rear-end collision so that it can subsequently exit the opening 16 after passing through the curved walls 32, 32 '.

The stabilization walls 33, 33 ', 33 "are used for secure connection with the impact plate 13, specifically the rear part of the impact plate 13.

The impact plate 13 itself may have foam filled chambers of preferably steel. On the front side contact fixing elements 34 are preferably provided, which ensure that when a vehicle is driven up, this can neither slip sideways nor up or down. The contact fixing elements are also made of steel, for example. These claw in a collision in the colliding vehicle.

FIG. 5 shows a schematic side view of a traffic safety device 1 according to the invention with an impact damping device 10. The impact damping device 10 is attached via a docking device 36 to a vehicle. This in Fig. 5 not shown vehicle is in FIG. 5 placed to the left of the docking device 36. To make this efficient, for example, fork openings 41, 41 'are provided which serve to accommodate the fork of a forklift can.

There are hinges 40, 40 ', 40 "provided by means of which the rods 14, 14', 14" via actuators, namely hydraulic cylinders 23, 23 'can be folded up in this embodiment. The hinges are good in Fig. 6 to recognize. The hinges 40, 40 ', 40 "are preferably screwed to the rods 12, 12', 12", wherein in particular in the longitudinal direction of the rods 12, 12 ', 12 "a plurality of screws are provided, which can be sheared off one after the other.

The actuators 23, 23 'or the hydraulic cylinders 23, 23' are articulated on corresponding levers in order, with a not too great expenditure of force, to move the rear part of the impact damping device 10, which is in FIG. 5 is arranged right, to be able to fold up. In the folded position, the schematic in FIG. 8 is shown in a side view, the position is fixed by using a synchronizing cylinder 24. Preferably, two or three synchronous cylinders 24 are provided. In the figures, however, only one synchronizing cylinder 24 is shown.

Moreover, in FIG. 5 still a holder 18 can be seen, which holds a traffic signal 19. The traffic signal 19 is pointing downwards in the shut-down state and pointing to the rear in the unfolded state and can also be used as an underrun protection serve.

In FIG. 6 schematically is a three-dimensional representation of the impact damping device 10 from FIG. 5 shown. In FIG. 7 the same impact damping device 10 is shown in a schematic plan view. The bracket 18 and the traffic signal 19 are fastened to the outer rods 12, 12 "via bolts 26. These bolts 26 can also be sheared off correspondingly by the squeezing device or on a corresponding shearing plate 30 of the respective squeezing device 14, 14 ', 14". Accordingly, the hinges 40, 40 ', 40 "can also be sheared off via the squeezing devices 14, 14', 14" or the shear plates 30 arranged thereon.

The synchronizing cylinder 24 is articulated to the hinges 40, 40 ', 40 "via a rod 35, which extends further in the direction of the impact plate 13. In the front part of the impact damping device 10, ie in FIG FIG. 7 in the left-hand area, the synchronizing cylinder 24 is connected to the docking device 36 in such a way that the synchronizing cylinder 24 can emerge from a corresponding tab when the force is applied in the direction of the docking device 36. The same applies when using two or three constant velocity cylinders.

The docking device 36 serves not only for docking to a vehicle, but also, for example, for receiving accumulators to provide corresponding traffic signs with electrical energy.

All of these features, including the drawings to be taken alone as well as individual features that are disclosed in combination with other features are alone and in combination regarded as essential to the invention. Embodiments of the invention may be accomplished by individual features or a combination of several features. In the context of the invention, features which are identified by "particular" or "preferably" are to be understood as optional features.

LIST OF REFERENCE NUMBERS

1

Traffic safety device

10

Aufpralldämpfeinrichtung

11

pendant

12, 12 ', 12 "

pole

13

impact plate

14, 14 ', 14 "

squeezing

15

longitudinal axis

16

opening

18

bracket

19

traffic signal

20

Underride protection

21

wheel axle

22

wheel well

23, 23 '

hydraulic cylinders

24

Synchronizing cylinder

25

flap

26

bolt

30

shear plate

31

sliding sleeve

32, 32 '

curved wall

33, 33 ', 33 "

Stabilization wall

34

Contact fixing element

35

crossbar

36

docking

40, 40 ', 40 "

hinge

41, 41 '

fork opening

Claims (11)

Traffic safety device (1) for road traffic with an impact damping device (10), wherein the impact damping device (10) is attachable to or attached to a vehicle or at least provided as a part of a vehicle trailer (11), wherein at least three juxtaposed rods (12, 12; 12 ', 12 ") are provided, an impact device (13, 14, 14', 14") being provided which is movable relative to the rods (12, 12 ', 12 ") along the longitudinal axis (15) of the rods (12 , 12 ', 12 "), with each rod (12, 12', 12") fixed relative to the impactor (13, 14, 14 ', 14 ") when moving in the longitudinal axis (15) of FIG respective rod (12, 12 ', 12 ") the respective rod (12, 12', 12") mechanically changing Bewegungsenergiekonversionsvorrichtung (14, 14 ', 14 ") is provided. Transport safety device (1) according to claim 1, characterized in that the kinetic energy conversion device (14, 14 ', 14 "), when moved in the direction of the longitudinal axis (15) of the rod (12, 12', 12"), the rod (12, 12 ', 12 ") in a direction transverse to Longitudinal axis (15) to press together. Traffic safety device (1) according to claim 1 or 2, characterized in that the kinetic energy conversion device (14, 14 ', 14 ") encloses the rod (12, 12', 12"). Traffic safety device (1) according to one of claims 1 to 3, characterized in that the Bewegungsenergiekonversionsvorrichtung (14, 14 ', 14 ") on one side an opening (16) through which the mechanically modified rod (12, 12', 12 ") passes through. Traffic safety device (1) according to one of claims 1 to 4, characterized in that the stability of the respective rod (12, 12 ', 12 ") in the longitudinal direction (15) is varied. Traffic safety device (1) according to one of claims 1 to 5, characterized in that at least one device connected to a rod (12, 12 ', 12 "), in particular a holder (18) for traffic signals (19), an underrun protection (20). a wheel axle (21), a wheel arch (22) and / or a hydraulic cylinder (23, 23 ', 24), at the point of connection to the rod (12, 12', 12 ") a shear body (25, 26), the for shearing off the rod (12, 12 ', 12 ") in operative connection with the kinetic energy conversion device (14, 14', 14") is brought or brought. Traffic safety device (1) according to one of claims 1 to 6, characterized in that each rod (12, 12 ', 12 ") has a hinge (40, 40 ', 40"), by means of which a part of the impact damping device (10) can be folded up. Traffic safety device (1) according to claim 7, characterized in that the hinge (40, 40 ', 40 ") is designed to be sheared by the Bewegungsenergiekonversionsvorrichtung (14, 14', 14"). Traffic safety device (1) according to claim 8, characterized in that for moving the foldable part of the impact damping device (10) at least one hydraulic cylinder (23, 23 '), in particular one on the outer rods (12, 12 ") mounted hydraulic cylinder (23, 23 ') is provided. Traffic safety device (1) according to claim 9, characterized in that at least one hydraulic synchronizing cylinder (24) is provided for fixing the fold-up part of the impact damping device (10). Traffic safety device (1) according to one of claims 1 to 10, characterized in that the impact device (13, 14, 14 ', 14 ") has a contact fixing element (34) on the front side.

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