DE102019114514A1 - Energy absorbing device and vehicle - Google Patents

Abstract

The invention relates to an energy absorption device (100) for protecting a vehicle element (10, 10 ', 10 "), in particular a military vehicle (1, 1', 1") from a detonation effect, comprising a first fastening element (110) which is connected to a The vehicle chassis (2) and / or a vehicle pan (2) can be connected and a second fastening element (120) which can be connected to the vehicle element (10, 10 ', 10 ") to be protected, wherein between the first and the second fastening element (110 , 120) at least two webs (130, 140, 150, 160) are arranged The at least two webs (130, 140, 150, 160) are arranged in such a way that they lie one above the other in a common plane (E).

Description

The invention relates to an energy absorption device for protecting a vehicle element, in particular a vehicle element of a military vehicle, from a detonation effect, comprising a first fastening element that can be connected to a vehicle chassis or a vehicle hull and a second fastening element that can be connected to the vehicle element to be protected, wherein at least two webs are arranged between the first and the second fastening element.

The application also relates to a vehicle with such an energy absorption device.

From the DE 10 2010 052 151 A1 a cabin for a construction vehicle is known which has at least one hydraulically damped rubber bearing means and at least one roll stabilization means in the rear area of the cabin. This improves the spring comfort of the cabin for faster transport journeys. Basically, however, the objectives of suspensions for construction machine cabins - they do not offer any protection against detonations - than suspensions for military vehicles, so that they cannot be compared.

From the DE 10 2007 002 576 A1 a decoupled pedal unit with a footplate of a military vehicle is known.

Suspensions of vehicle elements of military vehicles are made, for example DE 10 2008 053 152 A1 as well as the WO 2014/048420 A1 known. These publications each show deformation means that support a vehicle element. The deformation means are designed to be deformed in the event of a mine impact and to absorb energy so that the mine impact cannot be transmitted directly to the vehicle element. Both the fastening means and the webs are not provided in a common plane, but should move past one another during the deformation. The ones from the DE 10 2008 053 152 A1 and the WO 2014/048420 A1 Deformation devices disclosed in these publications are relatively large and only inadequately solve the conflict of objectives between elastic mounting and energy absorption in the case of plastic deformation.

Proceeding from this, the invention is based on the object of creating an energy absorption device for a vehicle, in particular a military vehicle, which is compact and solves this conflict of objectives.

This object is achieved by the energy absorption device of claim 1. Advantageous refinements and developments are the subject of the respective subclaims.

According to the invention, an energy absorption device for protecting a vehicle element, in particular a military vehicle, from a detonation effect is provided. The energy absorption device comprises a first fastening element which can be connected to a vehicle chassis or a vehicle pan and a second fastening element which can be connected to the vehicle element to be protected. At least two webs are arranged between the first and the second fastening element. The at least two webs are arranged in such a way that they lie one above the other in a common plane.

Furthermore, according to the invention, a vehicle, in particular a military vehicle, is provided, comprising such an energy absorption device or as described below and a vehicle element, the vehicle element being connected to the vehicle via the energy absorption device.

The vehicle can be a wheeled or tracked vehicle, for example. The tracked vehicle can be, for example, an armored recovery vehicle, an engineer tank, a mine clearance tank, an armored personnel carrier or a battle tank. The wheeled vehicle can be, for example, a heavy truck, a tractor-trailer, a crane or a wheeled armor.

The energy absorption device according to the invention creates a compact energy absorption device which, on the one hand, provides an elastic mounting of the vehicle element that can be connected to it and, on the other hand, can absorb high energy in the form of deformation work in the event of a detonation.

The vehicle element that is connected to the energy absorption device can be, for example, a cabin or a shelter of a vehicle. In particular, the cabin can be a protected cabin. Likewise, the vehicle element can be a structure, a platform, a floor, a vibrating floor, an intermediate floor, a floor plate or a component of one of the aforementioned elements.

Furthermore, the vehicle element can be a footplate, a seat device, a weapon system, a device holder, a shelf or it can be part of one of the aforementioned elements.

The energy absorption device according to the invention protects the vehicle element from a detonation effect, such as can be caused by a mine or a booby trap, for example.

The energy absorption device according to the invention makes it possible for it to be plastically deformed in a controlled manner in the event of a detonation and for the vehicle element that can be connected to it not to be damaged.

It can preferably be provided that the webs have at least one deformation zone.

The at least one deformation zone is a zone in which the webs are plastically deformed when they are correspondingly strongly deflected. This is done through the construction of the energy absorption device, which means that the webs are first deformed in the deformation zones.

Furthermore, it can be provided that the webs in the deformation zones are weakened by the choice of material or geometry in such a way that they deform first in the deformation zones.

Furthermore, it can be provided that the first fastening element, the second fastening element, the at least two webs and the at least one deformation zone are arranged in such a way that they lie one above the other in the plane that is perpendicular to the first and the second fastening element.

The fastening elements and the webs of the energy absorption device are arranged like an accordion in a common plane, so that a compact energy absorption device is created.

In a further development of the energy absorption device, it can be provided that the webs are designed to be flexurally elastic, so that the energy absorption device supports the vehicle element in a resilient manner.

What is achieved hereby is that the energy absorption device allows elastic mounting of the vehicle element, provided the deflection is not too great. Thus, in normal driving situations of the vehicle, the vehicle element can be stored, whereas, in order to protect against a detonation effect, energy is absorbed by plastic deformation.

In an advantageous further development, it can be provided that flexurally stiffened transition zones are formed between the fastening devices and the respectively adjoining webs.

By forming the flexurally stiffened, in particular essentially flexurally rigid, transition zones it is achieved that the webs of the energy absorption device do not simply bend or break off, but rather a defined deformation is achieved in the area of the transition deformation zones of the webs.

Furthermore, it can be provided in a further development that the transition deformation zones are formed adjacent to the flexurally stiffened transition zones.

Furthermore, it can be provided that between the webs each bending-stiffened, in particular substantially bending-resistant, corners are formed.

This ensures that the webs and not the corners are specifically deformed. Furthermore, it is achieved that the energy absorption device does not simply kink or collapse in the corners and the webs are prevented from lying on a block. The webs can thus be loaded specifically for bending. In addition, it is ensured in this way that a plastic deformation of a deformation zone of the web is possible, which is subordinate to an elastic deformation of a web in the spring travel. This ensures that both sufficient elastic resilience and plastic deformation are possible.

In one embodiment, it can also be provided that the deformation zones are formed adjacent to the flexurally stiffened corners.

Furthermore, it can be provided that the deformation zones from the second fastening element to the first fastening element are at least partially more difficult to deform than the preceding deformation zones, so that the energy absorption device has a progressive deformation characteristic.

In this way, the deformation sequence is specifically influenced so that the deformation zones are deformed in a defined sequence.

Furthermore, it can be provided that the thickness of the webs increases from the second fastening element to the first fastening element, so that the energy absorption device has a progressive spring characteristic.

This means that the elastic deformability of the webs is different and the spring characteristic of the energy absorption device can be specifically influenced.

The spring characteristic can alternatively be degressive.

It can also be provided that the webs are arranged in an alternating direction in a zigzag fashion.

This creates a particularly space-saving energy absorption device.

In an embodiment of the energy absorption device, it can be provided that inner radii are formed between the webs in rigid corners and / or inner radii are formed in the transition zones.

By creating inner radii, notch stresses are specifically induced in the deformation zones. The notch stress that occurs can be influenced by the size of the radius of the inner radii, so that the size of the notch stresses and also the limit at which the deformation occurs can be set using the radius.

In an advantageous development, the inner radii between the webs in rigid corners and / or the inner radii in the transition deformation zones from the second fastening element to the first fastening element can become larger.

In this way, the deformation sequence is set in a targeted manner, so that deformation gradually occurs from the second fastening element to the first fastening element.

This ensures that the notch stresses within the deformation zones are highest directly on the first fastening element and the deformation also occurs first in the vicinity of the chassis.

As an alternative to the sequence mentioned above, however, it is also possible for the inner radii between the webs in rigid corners and / or the inner radii in the transition zones from the first fastening element to the second fastening element to become larger. This ensures that the notch stresses within the deformation zones are highest directly on the second fastening element and the deformation first occurs in the vicinity of the vehicle element.

The invention will be explained below using exemplary embodiments with reference to the drawings.

• 1 eine schematische Darstellung eines ersten erfindungsgemäßen Fahrzeugs mit zumindest einer erfindungsgemäßen Deformationsvorrichtung;
• 2 eine schematische Darstellung eines zweiten erfindungsgemäßen Fahrzeugs mit zumindest einer erfindungsgemäßen Deformationsvorrichtung;
• 3 eine schematische Darstellung eines dritten erfindungsgemäßen Fahrzeugs mit zumindest einer erfindungsgemäßen Deformationsvorrichtung;
• 4a eine schematische Darstellung einer erfindungsgemäßen Energieabsorbtionsvorrichtung in einer Ausgangsstellung;
• 4b eine schematische Darstellung der erfindungsgemäßen Energieabsorbtionsvorrichtung in einer Ausgangsstellung mit Kenntlichmachung der Ebene E;
• 5 eine schematische Darstellung der erfindungsgemäßen Energieabsorbtionsvorrichtung in einer Zwischenstellung; und
• 6 eine schematische Darstellung der erfindungsgemäßen Energieabsorbtionsvorrichtung in einer deformierten Stellung.

Show it:

• 1 a schematic representation of a first vehicle according to the invention with at least one deformation device according to the invention;
• 2 a schematic representation of a second vehicle according to the invention with at least one deformation device according to the invention;
• 3 a schematic representation of a third vehicle according to the invention with at least one deformation device according to the invention;
• 4a a schematic representation of an energy absorption device according to the invention in an initial position;
• 4b a schematic representation of the energy absorption device according to the invention in an initial position with the level E being identified;
• 5 a schematic representation of the energy absorption device according to the invention in an intermediate position; and
• 6th a schematic representation of the energy absorption device according to the invention in a deformed position.

1 shows a first vehicle according to the invention 1 with a vehicle chassis 2 . On the vehicle chassis 2 is a vehicle element 10 educated. With the vehicle 1 it is preferably a military vehicle. In the vehicle element 10 it can be, for example, a cabin, a driver's cab, a platform, a structure or the like. Between the vehicle element 10 and the vehicle chassis 2 is at least one energy absorbing device 100 arranged that the vehicle element 10 on the vehicle 1 stores.

The energy absorption device 100 serves to protect the vehicle element 10 , before a detonation effect and is more detailed in the 4a to 6th shown. The energy absorption device 100 according to 4a to 6th can be found in all vehicles 1 to 3 .

2 shows a second vehicle according to the invention 1' which is essentially the first vehicle 1 with the difference that it is the vehicle element 10 ' is a floor or intermediate floor. The vehicle element 10 ' is by means of at least one energy absorption device 100 on the vehicle chassis 2 of the vehicle 1 stored. The vehicle element 10 ' is arranged within a cab or a driver's cab.

3 shows a third vehicle according to the invention 1" with a vehicle pan 2 ' . Inside the vehicle hull 2 ' is by means of at least one energy absorption device 100 a vehicle element 10 " stored. In the vehicle element 10 " it can be, for example, a vehicle interior or a shelter. Deviating from the 3 can the vehicle element 10 " but also be a floor or intermediate floor.

According to 3 is the vehicle element 10 " through multiple energy absorption devices 100 with the vehicle pan 2 ' connected and stored within this.

4a shows a schematic representation of an energy absorption device according to the invention 100 in a starting position, that is to say a position in which the energy absorption device 100 is not deformed.

The energy absorption device 100 comprises a first fastening element 110 that comes with the vehicle chassis 2 or the vehicle pan 2 ' of the vehicle 1 is connectable. The first fastener 110 is designed as a plate or sheet metal and is installed with the vehicle chassis 2 or the vehicle pan 2 ' connected.

The energy absorption device also includes 100 a second fastener 120 with the vehicle element to be protected 10 is connectable. The second fastener 110 is preferably also designed as a plate or sheet metal and is installed with the vehicle element 10 connected.

The wall thickness and the dimensions of the first fastening element 110 and the second fastening element 120 can deviate from each other in terms of the geometry of the energy absorption device 100 be adjusted. Like in the 1 shown, the first fastening element 110 have a smaller wall thickness and be made wider than the second fastening element 120 .

Between the first and the second fastening element 110 , 120 are at least two bars 130 , 140 , 150 , 160 arranged. As in 4a shown four bars 130 , 140 , 150 , 160 his.

As in 4a and 4b can be seen are the first fastening element 110 , the second fastener 120 , the jetties 130 , 140 , 150 , 160 and the deformation zones 172 , 174 , 182 , 184 , 192 , 194 are arranged such that they are one above the other in a common plane E. are arranged, the common plane E. perpendicular to the two fasteners 110 , 120 lies.

The bridges 130 , 140 , 150 , 160 are alternately arranged in different directions in a zigzag manner one above the other. In other words, are the ridges 130 , 140 , 150 , 160 Arranged one above the other like an accordion.

To a resilient mounting of the vehicle element 10 by the energy absorbing device 100 accessible are the footbridges 130 , 140 , 150 , 160 each designed to be flexible.

The length of the webs 130 , 140 , 150 , 160 can differ from one another, so that, for example, a first web 130 and a fourth bridge 160 that came with the fasteners 110 , 120 connected, are shorter than a second web 140 and third bridge 150 .

Due to the different lengths of the bars 130 , 140 , 150 , 160 What is achieved is that these can deflect elastically to different extents and that the energy absorption device has a defined flexural shape 100 results in an elastic deformation. Such a bending figure due to elastic deformation is for example in 5 shown.

Between the bridges 130 , 140 , 150 , 160 are each bent corners 170 , 180 , 190 educated. The bend-stiffened corners 170 , 180 , 190 are designed in such a way that they essentially do not bend and ensure that in the event of an elastic deformation of the webs 130 , 140 , 150 , 160 the bend-stiffened corners 170 , 180 , 190 make sure the webs 130 , 140 , 150 , 160 not by deforming the corners 170 , 180 , 190 folded up. This means that, in addition to elastic deformation, in the event of a greater deflection, plastic deformation of the deformation zones 172 , 174 , 182 , 184 , 192 , 194 can take place.

As in 4a shown, point the webs 130 , 140 , 150 , 160 at least one deformation zone each 172 , 174 , 182 , 184 , 192 , 194 on. The deformation zones 172 , 174 , 182 , 184 , 192 , 194 are each at the flexurally stiffened corners 170 , 180 , 190 formed adjacent.

Between the fasteners 110 , 120 and the adjacent bars 130 , 160 are flexurally stiffened transition zones 112 , 122 educated. These have a comparable effect to the bend-reinforced corners 170 , 180 , 190 .

At the flexurally stiffened transition zones 112 , 122 are adjacent the transition deformation zones 115 , 125 educated.

Like in the 4a shown are inner radii R ₂ , R ₃ , R ₄ between the webs 130 , 140 , 150 , 160 in the deformation zones 172 , 174 , 182 , 184 , 192 , 194 and / or inner radii R ₁ , R ₅ in the transition zones 112 , 122 educated.

According to 4a are the inner radii R ₂ , R ₃ , R ₄ that between the webs 130 , 140 , 150 , 160 in the rigid corners 170 , 180 , 190 are formed by the second fastening element 120 to the first fastening element 110 getting bigger.

A fourth radius is in development R ₄ between the third bridge 150 and fourth bridge 160 the biggest. A third radius R ₃ between the second bridge 140 and the third bridge 150 is smaller than the fourth radius (R ₃ <R ₄ ). A second radius R ₂ between the first landing 130 and the second bridge 140 is smaller than the third radius R ₃ . It applies to the radii R2 to R4 the following mathematical relationship: R ₂ <R ₃ <R ₄ .

The inside radii R ₁ , R ₅ in the transition zones 112 , 122 are according to 4a preferably the same size. As from the 4a it shows the radii R ₁ and R ₅ both smaller than the radius R ₂ . It applies to the radii R ₁ to R ₅ the following mathematical relationship: R ₁ = R ₅ <R ₂ <R ₃ <R ₄ .

The fat t ₁ , t ₂ , t ₃ , t ₄ the webs 130 , 140 , 150 , 160 can of the second fastening element 120 to the first fastening element 110 be made larger, so that the energy absorption device 100 has a progressive spring characteristic. It applies to the fat ones t ₁ to t ₄ the following mathematical relationship: t ₁ <t ₂ <t ₃ <t ₄ .

4b again clearly illustrates the position of the plain E. , being the level E. is indicated by hatching. As from the 4b can be seen, the plane lies E. perpendicular to the first and second fastening elements 110 , 120 . The first fastener 110 , the second fastener 120 who have at least two webs 130 , 140 , 150 , 160 and the at least one deformation zone 172 , 174 , 182 , 184 , 192 , 194 are arranged in such a way that they are one above the other in the plane E. lie.

5 shows a schematic representation of the energy absorption device according to the invention 100 in an intermediate position in which the energy absorption device 100 is elastically deformed. The rigid corners 170 , 180 , 190 are essentially undeformed in this intermediate position and the webs 130 , 140 , 150 , 160 are elastically deformed. 5 Figure 11 shows the energy absorbing device 100 thus in an elastically compressed state.

6th shows a schematic representation of the energy absorption device according to the invention 100 in a deformed position in which the energy absorbing device 100 is plastically deformed.

The deformation zones 172 , 174 , 182 , 184 , 192 , 194 are from the second fastener 120 to the first fastening element 110 towards at least partially more difficult to deform than the preceding deformation zones 172 , 174 , 182 , 184 , 192 , 194 so that the energy absorbing device 100 has a progressive deformation characteristic. In addition, the different degrees of deformation result in a deformation sequence of the deformation zones of the energy absorption device 100 given.

So far as the above disclosure relates to the energy absorption device 100 refers as such, this also applies to a vehicle with such an energy absorption device 100 as revealed.

List of reference symbols

1

first vehicle

1'

second vehicle

1"

third vehicle

2

Vehicle chassis

2 '

Vehicle tub

10

Vehicle element

10 '

Vehicle element

10 "

Vehicle element

100

Energy absorbing device

110

first fastening element

112

first transition zone

115

first transition deformation zone

120

second fastening element

122

second transition zone

125

second transition deformation zone

130

first bridge

140

second bridge

150

third bridge

160

fourth bridge

170

first deformation zone

180

second deformation zone

190

third deformation zone

R ₁

first radius

R ₂

second radius

R ₃

third radius

R ₄

fourth radius

R ₅

fifth radius

E.

level

t ₁

Thickness of the first web

t ₂

Thickness of the second web

t ₃

Thickness of the third web

t ₄

Thickness of the fourth web

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 102010052151 A1 [0003]
• DE 102007002576 A1 [0004]
• DE 102008053152 A1 [0005]
• WO 2014/048420 A1 [0005]

Claims (15)

Energy absorption device (100) for protecting a vehicle element (10, 10 ', 10 "), in particular a military vehicle (1, 1', 1"), from a detonation effect, comprising a first fastening element (110) which is connected to a vehicle chassis (2 ) and / or a vehicle pan (2) can be connected and a second fastening element (120) which can be connected to the vehicle element (10, 10 ', 10 ") to be protected, wherein between the first and the second fastening element (110, 120) at least two webs (130, 140, 150, 160) are arranged, characterized in that the at least two webs (130, 140, 150, 160) are arranged in such a way that they lie one above the other in a common plane (E). Energy absorption device (100) according to Claim 1 , characterized in that the webs (130, 140, 150, 160) have at least one deformation zone (172, 174, 182, 184, 192, 194). Energy absorption device (100) according to Claim 1 or 2 , characterized in that the first fastening element (110), the second fastening element (120), the at least two webs (130, 140, 150, 160) and the at least one deformation zone (172, 174, 182, 184, 192, 194) are arranged such that they lie one above the other in the plane (E) which is perpendicular to the first and the second fastening element (110, 120). Energy absorption device (100) according to one of the preceding claims, characterized in that the webs (130, 140, 150, 160) are designed to be flexible. Energy absorption device (100) according to one of the preceding claims, characterized in that flexurally stiffened transition zones (112, 122) are formed between the fastening devices (110, 120) and the respectively adjoining webs (130, 160). Energy absorption device (100) according to Claim 5 , characterized in that the transition deformation zones (115, 125) are formed adjacent to the flexurally stiffened transition zones (112, 122). Energy absorption device (100) according to any one of the preceding claims, characterized in that flexurally stiffened corners (170, 180, 190) are formed between the webs (120). Energy absorption device (100) according to Claim 7 , characterized in that the deformation zones (172, 174, 182, 184, 192, 194) are formed adjacent to the bend-reinforced corners (170, 180, 190). Energy absorption device (100) according to one of the preceding claims, characterized in that the deformation zones (172, 174, 182, 184, 192, 194) from the second fastening element (120) to the first fastening element (110) are at least partially more difficult to deform than the preceding deformation zones (172, 174, 182, 184, 192, 194), so that the energy absorption device (100) has a progressive deformation characteristic. Energy absorption device (100) according to one of the preceding claims, characterized in that the thickness (t ₁ , t ₂ , t ₃ , t ₄ ) of the webs (130, 140, 150, 160) from the second fastening element (120) to the first fastening element (110) becomes larger, so that the energy absorption device (100) has a progressive spring characteristic. Energy absorption device (100) according to one of the preceding claims, characterized in that the webs (130, 140, 150, 160) are arranged in an alternating direction like a sawtooth. Energy absorption device (100) according to one of the preceding claims, characterized in that inner radii (R ₂ , R ₃ , R ₄ ) between the webs (130, 140, 150, 160) in the rigid corners (170, 180, 190) and / or inner radii (R ₁ , R ₅ ) are formed in the transition zones (112, 122). Energy absorption device (100) according to one of the preceding claims, characterized in that the inner radii (R ₂ , R ₃ , R ₄ ) between the webs (130, 140, 150, 160) in the rigid corners (170, 180, 190) and / or inner radii (R ₁ , R ₅ ) in the transition zones (112, 122) from the second fastening element (120) to the first fastening element (110) become larger. Vehicle (1, 1 ', 1 ") comprising an energy absorption device (100) according to one of the Claims 1 - 13 and a vehicle element (10, 10 ', 10 "), the vehicle element (10) being connected to the vehicle (1, 1', 1") via the energy absorption device (100). Vehicle (1, 1 ', 1 ") after Claim 14 , wherein the vehicle element (10, 10 ', 10 ") has a cabin, in particular a vehicle cabin, a floor, an intermediate floor, a structure, a footplate, a Is a seating arrangement, a weapon system, a device holder or a shelf.

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