EP2784221A1 - Travelling device for guard rail systems - Google Patents

Abstract

The suspension device (1) comprises a mounting element for mounting the suspension device on a barrier section (2) of the control system, and a chassis (16) for moving the barrier section on a substantially horizontally extending running plane (3). The chassis has a driving element, which folds the driving element parallel to the running plane during extension of the chassis from the rest position into the driving position.

Description

TECHNICAL AREA

The present invention relates to a landing gear device for a crash barrier guidance system on traffic routes according to the preamble of claim 1 and a guardrail section movable with this landing gear device.

STATE OF THE ART

Guard rails or guidance systems are installed by default as a guide to traffic routes, especially in the median strip between individual lanes of multi-lane roads, preferably in front of tunnels, for rapid diversion during maintenance or traffic management. A stationary attachment of such conductive boundaries has the disadvantage that a temporary transition between two separated by the guide road areas is only possible by at least partial disassembly of the attachment.

From the EP 2 107 164 a guide has become known, which has a horizontally pivotable barrier adjacent a stationary barrier or plank. This guide thresholds are coupled at their mutually facing end sides via a rotary joint with a vertical pin. The swiveling barrier is equipped with a support rollers comprehensive, cylinder-equipped lifting unit. By means of this lifting unit, the support rollers are retractable and retractable. In the coupling region of the pivotable barrier with the stationary barrier, a drive unit for displacing the pivotable, resting on the extended support rollers integrated threshold is integrated.

The DE 600 14 502 T2 also shows a guard rail system with a pivotable Leitschwellenabschnitt. By way of an actuation mechanism, support legs with rollers can be extended such that the pivotable guide threshold section can be pivoted on one of these rollers with one end.

The disadvantage here is that guardrail systems with known driving units tend to undesirable tilting movements, which adversely affects the movement process, especially when the ground, over which roll the rollers, is uneven or has cracks or overlying foreign body.

PRESENTATION OF THE INVENTION

It is therefore an object of the present invention to provide a suspension device for guard rail systems, which allows a reliable method or pivoting movable guard rail sections. In particular, a tipping stability of the movable guard rail sections should be increased.

This object is solved by the subject matter of claim 1. Accordingly, a landing gear device for a guardrail guide system is specified in particular on a traffic route, this landing gear device
a mounting element for mounting the landing gear device on a crash barrier section of the crash barrier guidance system,
a chassis for moving the crash barrier section on a substantially horizontally extending driving plane by means of the suspension device mounted on the guard rail section via the mounting element,
an actuator element, by means of which the chassis can be extended and retracted between a rest position and a driving position, wherein
the chassis has at least one driving element, which driving element during extension of the chassis from the rest position to the driving position substantially parallel to the driving plane is folded out.

A chassis device is preferred in which the traveling element can be folded along a direction of travel with respect to a plane that is perpendicular to the driving plane and / or wherein said movement of the driving element is a combined movement of said extending movement of the chassis and said unfolding movement.

In a particularly preferred embodiment, the driving element is movable by the Ausklappbewegung between a starting position and an end position such that the driving element when extending the chassis from the rest position to the driving position of the starting position merges into the end position and when retracting the chassis from the driving position in the Rest position moves from the end position to the starting position.

Here, the horizontal is the direction transverse to the direction of gravity, whereby the expression "plane extending substantially in the horizontal plane" is to be understood as meaning that this plane may also be inclined by up to 15 degrees, as in the case of automobile streets Curves, for example, can occur. The direction of travel is the direction in which the driving element guides the chassis device.

It is therefore an aspect of the present invention to increase the tipping stability of the traveling guard rail sections in that the suspension device which can be extended and retracted in the vertical direction has a drive element which can be folded and folded horizontally. In a storage position, i. in the retracted state with the driving element in the starting position, the storage space is optimally used in a recording of the crash barrier section by the horizontally folded and vertically retracted drive element. When retracted, the chassis preferably hangs freely in the receptacle on the mounting element. When the chassis is extended to the driving position, the driving element is unfolded and the driving element is in the end position. Thereby, a horizontal distance of the support points of the driving element is increased from the line of gravity to a center of gravity of the movable device, which reduces the tilting moments and thus stabilizes the displacement.

By means of the landing gear device, therefore, lifting and lowering operations in the vertical direction as well as traveling or shifting operations in the direction of travel of a guard rail section fastened to the mounting element can be carried out in a controlled manner. It is also conceivable to carry out these movement processes remotely or motorized-automatically.

In a preferred embodiment, the driving element has at least two rollers arranged at a distance in the direction of travel, wherein this distance is smaller when lying in the starting position driving element than lying in the end position driving element and wherein the spaced rollers are preferably arranged on an axle on the chassis, which Axis is preferably a common pivot axis.

The distance of the rollers in the direction of travel is in this case so large that the landing gear device can stand stable and wide on the ground, even with a resting on the mounting element guard rail section.

A single pivot axis for the rearward with respect to the direction of travel and the pivotable forward rollers allows a compact design with a minimum number of components.

The chassis device is the use according to loads correspondingly stable, for example. Made of welded steel elements and solid rubber wheels.

Preferably, the actuator element between the mounting member and the chassis is arranged such that a direction of movement of the chassis between the rest position and the driving position is substantially perpendicular to the driving plane, wherein the chassis device is adapted to extend the chassis while raising the crash barrier section and retracting under lowering of the guard rail section , Thus, the actuator element is able to push apart the assembly element and the chassis and bring it back together in a controlled manner while raising or lowering the guard rail section.

For optimum control of this operation, a guide element is preferably arranged between the mounting element and the chassis for guiding the actuator-actuated extension and retraction movement of the chassis in the direction of movement, this guide element preferably being a telescopic guide element. By the term "telecopic guide element" is meant a guide element which comprises telescoping elements or which telescopes into another element.

Advantageously, the chassis comprises a base element, one between the Starting position and the end position substantially pivotable in the direction of travel first guide arm and between the starting position and the end position substantially against the direction of travel pivotable second guide arm. The first and the second guide arm are respectively pivoted on the base element in such a way that the first guide arm can be pivoted out of the initial position in the direction of travel into the end position and the second guide arm can be pivoted out of the initial position counter to the direction of travel into the end position. At free end portions of the first and second guide arms, the rollers are arranged for rolling contact with the plane as the driving element. It is therefore preferable to provide pivotable guide arms as folding mechanism, on which rollers are mounted, wherein the rollers are horizontally so close to each other in the starting position that the corresponding receptacle in the guard rail section is optimally utilized in the suspension device lying in the rest position. The folding mechanism is further preferably designed such that the rollers are unfolded or pivoted in the end position, so that the contact points of the rollers stand as broad and stable as possible on the ground. The folding mechanism is thus advantageous in the conflict of objectives of adherence to limited absorption capacity of the guardrail section to be displaced or the associated dimensional restriction and a stable and therefore wide edition of the driving element to reduce tilt in along the direction of travel.

Preferably, the landing gear device further comprises a stop element for abutment of the respective first and second guide arms pivoted into the end position, wherein the stop element is preferably fixedly arranged on the chassis, in particular on the base element and optionally the guide arms are preferably aligned on the same pivot axis on the base element.

In order to increase the stability further, it is advantageous if in a repeated development a plurality of first and second guide arms are arranged in the base element in the horizontal axis direction of the pivot axis, wherein preferably the rollers of the first guide arms are mounted on a common, continuous first roller axis and the rollers of the second guide arms are supported via a common, continuous second roller axle. These roller axes are parallel to each other in the axial direction, wherein preferably each roller is taken on both sides in the direction of the axis in each case a corresponding guide arm.

It is therefore an aspect of this development, not only two rollers spaced in the direction of travel, but to provide two spaced apart in the direction of travel roller packages of rollers arranged in the axial direction. These role packages can form subpackets or subgroups closer together in the axial direction with larger distances between them.

Preferably, the first guide arms are each arranged offset in the axial direction to the second guide arms. This further increases the stability, in which case also the rollers on the first roller axle are arranged offset from the rollers on the second roller axle.

In order to enable a trouble-free movement of the chassis relative to the mounting element, it is advantageous if the landing gear device continues to guide rollers for lateral guidance of the extension and retraction movement on the guard rail section, i. along its internal receptacle.

Preference is given to actuator elements which can be actuated electrically or fluidically, wherein the actuator element preferably comprises at least one air bellows, preferably exactly two air bellows, which are pneumatically actuated. The actuator element may alternatively or additionally comprise a preferably centered, housed in the cavity of the guide member gear, in particular a rack gear which is actuated via a crank, wherein the crank is in particular a hand crank for manual operation (for example, for emergency operation in case of power failure).

It is a further object of the present invention to provide a stably movable guardrail section. This object is achieved by a crash barrier section having at least one landing gear device described herein.

In a further development of this crash barrier section, a plurality of aforementioned landing gear devices are provided, wherein the landing gear device is preferably arranged in a particularly regular longitudinal distance along the longitudinal extent of the guard rail section, ie in the axial direction of the landing gear device, this longitudinal distance being 4 to 10 meters, in particular substantially 3 to 5 meters.

It is preferred if the guard rail portion is a substantially U-shaped Cross-sectional shape having downwardly directed opening, wherein the landing gear device is preferably fully retractable in the formed between the U-shape legs of the guard rail portion, the guard rail portion preferably rests on retracted landing gear on laterally projecting end portions of the legs and extended in the landing gear device of the plane lifted rests on the driving element and is movable or displaceable on the driving element in the direction of travel.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

in schematischer Form einen Querschnitt durch einen auf einem ebenen Untergrund ruhenden Leitplankenabschnitt mit einer erfindungsgemässen Fahrwerkvorrichtung in vollständig eingefahrenem Zustand;

Fig. 2

einen Längsschnitt durch die Fahrwerkvorrichtung gemäss Fig. 1, wobei die Fahrwerkvorrichtung erneut in eingefahrenem Zustand dargestellt ist;

Fig. 3

in schematischer Form einen Querschnitt den Leitplankenabschnitt mit der Fahrwerkvorrichtung gemäss Fig. 1, wobei die Fahrwerkvorrichtung in vollständig ausgefahrenem Zustand dargestellt ist;

Fig. 4

einen Längsschnitt durch die Fahrwerkvorrichtung gemäss Fig. 3, wobei die Fahrwerkvorrichtung erneut in ausgefahrenem Zustand dargestellt ist;

Fig. 5

in einer Seitenansicht eine bevorzugte Ausführungsform der erfindungsgemässen Fahrwerkvorrichtung in vollständig eingefahrenem Zustand;

Fig. 6

in einer Frontansicht die eingefahrene Fahrwerksvorrichtung gemäss Fig. 5;

Fig. 7

in einer Untenansicht die eingefahrene Fahrwerksvorrichtung gemäss Fig. 5;

Fig. 8

in einer perspektivischen Ansicht die Fahrwerkvorrichtung gemäss Fig. 5 in vollständig ausgefahrenem Zustand;

Fig. 9

in einer Frontansicht die ausgefahrene Fahrwerkvorrichtung gemäss Fig. 8;

Fig. 10

in einer perspektivischen Ansicht von oben die ausgefahrene Fahrwerkvorrichtung gemäss Fig. 8; und

Fig. 11

in einer Seitenansicht die ausgefahrene Fahrwerkvorrichtung gemäss Fig. 8.

Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:

Fig. 1

in schematic form a cross section through a resting on a flat surface guard rail section with an inventive suspension device in fully retracted state;

Fig. 2

a longitudinal section through the suspension device according Fig. 1 wherein the landing gear device is shown again in the retracted state;

Fig. 3

in schematic form a cross section of the guard rail section with the landing gear device according to Fig. 1 wherein the landing gear device is shown in fully extended condition;

Fig. 4

a longitudinal section through the suspension device according Fig. 3 , wherein the landing gear device is shown again in the extended state;

Fig. 5

in a side view of a preferred embodiment of the inventive suspension device in fully retracted state;

Fig. 6

in a front view of the retracted suspension device according Fig. 5 ;

Fig. 7

in a bottom view of the retracted landing gear device according Fig. 5 ;

Fig. 8

in a perspective view of the landing gear device according Fig. 5 in fully extended condition;

Fig. 9

in a front view of the extended landing gear device according Fig. 8 ;

Fig. 10

in a perspective view from above the extended landing gear device according Fig. 8 ; and

Fig. 11

in a side view of the extended landing gear device according Fig. 8 ,

DESCRIPTION OF PREFERRED EMBODIMENTS

Based on the schematic FIGS. 1 to 4 The function of the landing gear device 1 according to the invention will now be described in more detail. The following is then based on the FIGS. 5 to 11 a preferred embodiment set forth.

FIG. 1 shows in a schematically simplified manner a cross section through a resting on a plane 3 guard rail section 2 with a landing gear device 1 in the fully retracted state. The movable by means of the landing gear device 1 or displaceable guard rail section 2 has a substantially U-shaped cross-sectional shape with two free, extending to the plane 3 guard rail legs 21, 22. At the free, to the sides towards collar-like end portions of the legs 21, 22 are Support elements 26 attached to the support of the guard rail section 2 on the ground or the level 3. The cross-sectional shape of the guard rail section 2 is thus substantially hat-shaped. The guard rail section 2 rests securely and stably on these support sections 26 when the landing gear device 1 as in Fig. 1 is shown retracted; the crash barrier section 2 is thus stably constructed to support its own weight and that of the retracted landing gear device 1. The guard rail section 2 is particularly suitable as a guide on leading in opposite directions roadways a car highway.

Out Fig. 1 is also apparent that between the legs 21, 22, a receptacle 24 is formed for the landing gear device 1. The cross-section of the receptacle 24 essentially follows the outer cross-sectional shape of the guard rail section 2. Depending on the material, walls of the guard rail section 2 are preferably uniform and about 5 millimeters thick. This receptacle 24 has a downwardly directed opening 23, wherein the legs 21, 22 in such a free or distal end region such a collar forming outwardly extending that it is a receptacle for the against the plane 3 via the opening 23 downwardly projecting support elements 26 form. This canting increases the tipping stability of the on the support elements 26 resting guard rail section 2 and is further advantageous in that the receptacle 24 is not limited in volume by the support elements 26.

In the receptacle 24, the landing gear device 1 is housed or mounted. The landing gear device 1 comprises a mounting element 12, an actuator element 14 with a guide element 140 and a chassis 16. The mounting element 12 serves for fastening the landing gear device 1 on the crash barrier section 2. The chassis 16 serves with its travel element 165 as a rolling support for the guard rail section 2 to be moved. The actuator element 14 with the guide element 140 is used for extending or retracting the driving element 165 from the receptacle 24 of the guard rail section 2. The guide element 140 performs the vertical extension and retraction movement of the chassis 16 with respect to the mounting member 12 in the vertical direction of movement B. Is the landing gear device 1 retracted , so it depends in the receptacle 24 on the mounting member 12; if it is extended, it raises from level 3 against an upper end (the bottom of the U-shape) of the guard rail section 2 and lifts the latter up. The receptacle 24 is substantially filled by the retracted suspension device 1.

As in the upper area of the Fig. 1 can be seen, the mounting member 12 includes a mounting plate 120, which contacts the bottom portion of the U-shape of the guard rail portion 2. Here, the mounting plate 120 is fixedly mounted on the guard rail section 2. From the mounting plate 120 extends in the vertical direction of movement B, the actuator element 14 with the guide member 140 down (see Fig. 1 ). The guide member 140 internally provides a cavity 145 suitable for mounting actuators (in Figs Fig. 1 not shown) for moving the chassis 16 record. These actuators may be fluid actuated cylinders, transmissions, or rack and pinion gears with cranks or other actuators.

At the bottom in cross-section guide member 140 is closed below the movable in the vertical direction B chassis 16 at. FIG. 2 shows a simplified longitudinal section in the axial direction A by the landing gear device 1 in the state according to Fig. 1 , In the upper area, the mounting plate 120 of the mounting member 12 can be seen. Of these, the actuator element 14 extends in the vertical direction B with the centrally with respect to the mounting plate 120 mounted guide member 140 and interior 145 vertically downwards. The guide element 140 extends into a central receiving element 174 of the chassis 16 in the axis direction. The receiving element 174 has a box-shaped recess into which the guide element 140 engages vertically movable and telescopically under lateral guide contact. When retracted, the guide element 140 engages in depth to a bottom of the receiving element 174th

A base element 160 adjoins the receiving element 174 along the axis direction A. The receiving element 174 and the base member 160 are firmly connected. From this plate-shaped designed base member 160 extending in the vertical direction of movement B down plate-shaped stop members 169. The base member 160 and the stop members 169 also have a U-shaped cross-sectional shape with an opening facing down. Between the plate-shaped in the axial direction A along the base member 160 extending stop members 169, the pivot axis S is arranged. The pivot axis S is fixed to the base member 160. At this pivot axis S two downwardly in the vertical direction B projecting pivot arms 161, 162 are pivoted. The flat, one-piece and rigidly shaped pivot arms 161, 162 extend at an angle to the vertical direction B down, with the rollers 166 are acheachst in their end regions. The rollers 166 project beyond the pivot arms 161, 162 along the longitudinal extent of the arms 161, 162 and transversely thereto.

In Fig. 2 are below the plate-shaped stops 169, the first guide arms 161 recognizable. By the six illustrated first guide arms 161, a first roller axle 167 is guided. In each case, three guide arms 161 forming a subgroup are arranged equidistantly on one side of the receiving element 174 with respect to the axial direction A. Between immediately adjacent pairs of first guide arms 161, the rollers 166 are arranged on the first roller axle 167.

Next is in Fig. 1 recognizable that the first roller axis 167 on the right side of Fig. 1 and the second roller axle 168 right in FIG Fig. 1 and are mounted in the vertical direction B at the same height. The second guide arms 162 also have two subgroups with two intermediate rollers 166. Furthermore, it is off Fig. 1 it can be seen that the landing gear device 1 does not touch the plane 3 in the retracted state. The rollers 166 adjoining one another in the direction of travel F of the driving element 165, ie the rollers 166, extend essentially over the clear width of the receptacle 24 from the first leg 21 to the second leg 22 of the guard rail section 2, wherein the guide arms 161 attached to the pivot axis S , 162 at an acute angle of about 25 degrees to the vertical direction B and thus at about 50 degrees to each other down.

FIG. 3 also shows in a schematic way a cross section through the guard rail section 2 with the landing gear device 1 according to Figure 1. Figure 4 shows, similar to Fig. 2 , A correspondingly simplified longitudinal section through the device according to Fig. 3 , In the illustration according to Fig. 3 the chassis 16 is extended downwards raising the guard rail section 2 with respect to the plane 3. Hereby, the distance between the mounting plate 120 and the chassis 16 and the distance between the first and the second roller axle 167, 168 are increased.

Furthermore, it can be seen that the guide element 140 is partially extended from the depth of the receptacle of the receiving element 174, but still engages in this recording under lateral guide contact. The guide element 140 and the receiving element 174 are thus telescopically displaceable to each other. This means that a height of the landing gear device 1 in the vertical direction or movement direction B with respect to the arrangement of Fig. 1 is enlarged. By moving the chassis 16 downwards, the rollers 166 protrude out of the opening 23 and project beyond the support elements 26 downwards. The movement of the extension of the chassis 16 thus causes the guard rail section 2 is no longer resting on the support elements 26, but is lifted and then rests on the rollers 166. By this force of the rollers 166 and 170 of the S pivotable first guide arm 161 in the direction of travel F to the right in Fig. 3 pressed. The pivotable about S second guide arm 162 is pressed against the direction of travel F to the left. By this action on the guide arms 161, 162, the angle between the guide arms 161, 162 increases to about 90 degrees and the distance in the direction of travel F of the rollers 166 on the various guide arms 161, 162 also increases.

By this enlargement of the angle so a distance in the direction of travel F between the first and second roller axle 167, 168 increases, with which the support points of the rollers 166 have an increased distance, which increases the tilting stability of the raised guard rail section 2. Due to the increased distance in the end position according to Fig. 3 So is a tendency to tilt when moving the crash barrier section 2 reduced.

In Fig. 3 It can also be seen that the rollers 166 protrude laterally beyond the narrowest point of the crash barrier section 2. Thus, it is clear that the guide arms 161, 162 when retracting from the end position or Ausklapplage according to Fig. 3 in the starting position according to Fig. 1 have to be folded. This is done by the gravitational action on the rollers 166 and arms 161, 162. Since the ground pressure, which causes the first guide arms 161 and second guide arms 162 to unfold, is eliminated, this arm 161, 162 will pivot freely upon loss of ground contact due to its severity against each other until it stops in the starting position.

FIG. 4 shows in a simplified manner, as the actuator element 140 is partially extended from the receiving element 174, so that a vertical height of the landing gear device 1 is increased.

How out FIGS. 1 and 3 it can be seen, the guide arms 161, 162 each have an approximately centrally mounted recess 164 on their side faces directed upwards against the mounting element 12. The stop elements 169 engage in pivoting the arms 161, 162 in the end position in these edge-side recesses 164 to stop the guide arms 161, 162 a. In order not to selectively catch this stop on the guide arms 161, 162, a stop plate 176 lying at an angle to the longitudinal extent in the axial direction A is firmly attached to the respective first and second guide arms 161, 162 such that the stop elements 169 extend continuously on a surface abut the stop plates 176 and so limit the guide arms 161, 162 in their pivotal movement along the direction of travel F in the end position. The recess 164 and the stop plates 176 thus define the end position of the guide arms 161, 162 and the driving element 165, respectively.

The pivotal movement of the guide arms 161, 162 from the end position back to the starting position is also limited by the stop plates 176, which extend between the first and second guide arms 161, 162 against each other, such that the stop plate 176 of the first guide arms 161 forms a stop for the second guide arms 162 and vice versa.

In the FIGS. 1 and 3 Moreover, the guide rollers 170 leading along inner sides of the legs 21, 22 can be seen. These guide rollers 170 protrude laterally over the rollers 166 and contact if necessary, the recording 24 limiting surfaces of the legs 21, 22 for low-friction and targeted guidance in the direction of movement B. The guide rollers 170 are on the stop plates 176 via a center bez. the longitudinal extension of the stop plates 176 arranged suspension 171 attached. For this purpose, the stop plates 176 extend laterally beyond the guide arms 161, 162 to the outside and form a projection, each of two stop rollers 176 mounted on each stop plate 176 at the same vertical height. In the axial direction A, the guide rollers 170 are provided between the triads of guide arms 161 and 162, spaced apart in the axis direction A, with rollers 166 interposed therebetween (see, in particular, FIGS Fig. 5 ).

Based on FIGS. 5 to 11 Now, a preferred embodiment of the landing gear device 1 will be described.

FIG. 5 shows a preferred embodiment of the chassis device 1 in a side view. It can be seen the mounting plate 120, which covers the device 1 from above and projects beyond in the axial direction A. From the mounting plate 120, the box-shaped guide member 140 protrudes vertically downwards. The guide member 140 is fixedly secured to the mounting plate 120. Parallel to the mounting plate 120, the plate-shaped base member 160 extends on both sides of the guide member 140 in the axial direction A. Center with respect to the A direction in the base member 160, the receiving element 174 is mounted, which surrounds the box-shaped corresponding to the guide member 140 latter. How out Fig. 5 can be seen, the guide member 140 projects beyond the base plate 160 upwards and downwards. The protrusion of the exception member 174 substantially bridges the vertical distance between the base member 160 and the mounting plate 120 when the landing gear apparatus 1 is in the fully retracted condition as in FIG Fig. 5 located.

The guide member 140 is hereby mounted centrally with respect to the axis direction A between the mounting plate 120 and the chassis 16, so that in the axial direction before and There is also space behind the guide element 140 for an actuating element mounted between the chassis 16 and the mounting plate 120. In Fig. 5 It can also be seen that in the axial direction A, in the space to the left and to the right of the receiving element 174, two air bellows 141, 142 shown folded together extend between the base element 160 and the mounting plate 120. These air bellows 141, 142 serve as actuating means for actuating the extension and retraction movement of the chassis 16. The air bellows 141, 142 are connected via pressure lines 144 (see FIG. Fig. 5 and 11 ).

From the base element 160, the stop element 169 extends laterally downwards in each case. Preferably, the base member 160 and the stopper members 169 are provided as a one-piece component. This component then has a U-shaped, downwardly open cross-sectional shape (see Fig. 6 ). In this U-shape formed by the base element 160 and the stop elements 169, the pivot axis S received between the stop elements 169 is fastened to the front side in suspensions 172, on which the guide arms 161 are pivoted between the starting position and the end position. Between the downwardly extending guide arms 161, the rollers 166 are mounted. The continuous first roller axis 167 can be seen.

FIG. 6 shows in a front view of the embodiment of the chassis device 1 according to Fig. 5 , In the upper area, in turn, the mounting plate 120 can be seen, under which the air bellows 141 extends down to the base member 160. From the base member 160 extend on both sides of the plate-shaped stop members 169 down. In the frontal area, the pivot axis S is fixed in the bearing 172 on the base element 160. How out Fig. 6 it can be seen, the first and second guide arms 161, 162, which are oriented on the pivot axis S, extend at an angle downwards, the rollers 166 being in their end areas. Furthermore, the stop plates 176 can be seen, which extend below the recess 164 transversely to the longitudinal extension of the guide arms 161, 162.

In FIG. 7 is the embodiment of the suspension device 1 according to Fig. 5 shown from below. In turn, the first and second roller axes 167, 168, which are spaced apart in the direction of travel F, can be seen, on which the rollers 166 are mounted. Out Fig. 7 it can be seen that the first and the second Guide arms 161, 162 offset from one another. Accordingly, the rollers 166 disposed on the first roller shaft 167 are offset from the rollers 166 disposed on the second roller axle 168. It is a bottom of the receiving element 174 recognizable. On this floor can be supported at most in the cavity 145 accommodated actuator and act on the mounting plate 120.

FIG. 7 further shows that the guide rollers 170 are provided laterally for guiding the landing gear device 1 in the receptacle 24 of the guard rail section 2. These guide rollers are attached via a bearing 171 to the stop plates 176 and additionally also to the inner guide arms 161 and 162.

FIG. 8 shows the embodiment of the chassis device 1 according to Fig. 5 in fully extended condition. In particular, it can be seen that the air bellows 141, 142 are inflated and thus actuated. This causes a distance between the mounting plate 120 and the base member 160 to be increased. It can also be seen that the guide element 140, which is welded to the mounting plate 120, is telescopically extended from the receiving element 174. By this construction, an optimal guidance of the movement of the chassis 16 is made possible. It can also be seen that the stop elements 169 abut the stop plates 176. In addition, the stop members 169 abut against the guide arms 161, 162. Due to the pressure of the weight of the crash barrier section 2 and the landing gear device 1, the guide arms 161, 162 are pivoted outwards into the end position. This is especially true in FIG. 9 which is a frontal view of the embodiment in the position after Fig. 8 shows recognizable. In Fig. 9 It can also be seen that the stop elements 169 engage in the recesses 164 of the guide arms 161, 162.

The FIGS. 10 and 11 show further perspective views of the chassis device 1 according Fig. 8 , LIST OF REFERENCE NUMBERS 1 suspension device 169 stop element 170 leadership 12 mounting element 171 Suspension of 169 120 mounting plate 172 Storage of S. 122 mounting holes 173 stop plate 174 Receptacle for 140 14 actuator 176 stop plate 140 guide element 141.142 bellows 2 guardrail section 144 Pressure line, supply line 21, 22 leg 145 cavity 23 opening 24 admission 16 chassis 26 bearing section 160 base element 161 first guide arm 3 travel plane 162 second guide arm 164 recess A horizontal axis direction 165 driving element B vertical direction of movement 166 role F horizontal direction of travel 167 first roll axis S horizontal swivel axis 168 second roller axis

Claims (15)

Comprising landing gear device (1) for a guidance system, in particular on a traffic route
a mounting element (12) for mounting the landing gear device (1) on a crash barrier section (2) of the guidance system,
a chassis (16) for moving the crash barrier section (2) on a traveling plane (3) extending substantially in the horizontal direction by means of the chassis device (1) mounted on the guard rail section (2) via the mounting element (12),
an actuator element (14), by means of which the chassis (16) between a rest position and driving position off and retractable, characterized in that
the chassis (16) has at least one driving element (165), which driving element (165) during extension of the chassis (16) from the rest position to the driving position substantially parallel to the driving plane (3) can be folded out. Landing gear device (1) according to claim 1, wherein the driving element (165) is foldable along a direction of travel (F) with respect to a plane perpendicular to the driving plane (3) and / or wherein said movement of the driving element (165) is a combined movement of said one Extending movement of the chassis (16) and said Ausklappbewegung is. Landing gear device (1) according to claim 1 or 2, wherein the driving element (165) by the Ausklappbewegung between a starting position and an end position is movable, such that the driving element (165) upon extension of the chassis (16) from the rest position to the driving position of the initial position merges into the end position and merges when retracting the chassis (16) from the driving position to the rest position from the end position to the starting position. Landing gear device (1) according to claim 3, wherein the driving element (165) has at least two rollers arranged at a distance in the direction of travel (F), this distance being smaller when the driving element (165) is in the initial position than when the driving element (165) is in the end position. and wherein the spaced rollers (166) preferably on an axle on the chassis (16) are arranged, wherein this axis is preferably a common pivot axis (S). Chassis device (1) according to one of claims 1 to 4, wherein the actuator element (14) between the mounting member (12) and the chassis (16) is arranged such that a direction of movement (B) of the chassis (16) between the rest position and the driving position is substantially perpendicular to the driving plane (3), wherein the chassis device is adapted to extend the chassis (16) while raising the guard rail section (2) and retracting under lowering of the guard rail section (2). Landing gear device (1) according to one of claims 1 to 5, wherein a guide element (140) between the mounting member (12) and the chassis (16) for guiding the aktuatorelementbetätigten extension and retraction movement of the chassis (16) in the direction of movement (B) is arranged This guide element (140) is preferably a telescopic guide element. Landing gear device (1) according to one of claims 4 to 6, wherein the chassis (16) has a base element (160), a pivotable between the initial position and the end position first guide arm (161) and a pivotable between the initial position and the end position second guide arm (162 ), wherein the first and the second guide arm (161, 162) are respectively pivoted on the base element (160) in such a way that the first guide arm (161) can be pivoted from the initial position in the direction of travel (F) into the end position and the second guide arm (16). 162) is pivotable out of the starting position counter to the direction of travel (F) into the end position, the rollers (166) being in contact with the driving plane (3) at free end sections of the first and second guide arms (161, 162). Suspension device (1) according to claim 7, wherein the suspension device (1) further comprises a stop element (169) for abutment of the pivoted in the end position first and second guide arms (161,162), wherein the stop element (169) preferably fixed to the chassis (16), in particular is arranged on the base member (160) and if appropriate, the guide arms (161, 162) are preferably in contact with the base element (160) on the same pivot axis (163). Landing gear device (1) according to claim 7 or 8, wherein a plurality of first and second guide arms (161, 162) are arranged in the base element (160) in the axis direction (A) of the pivot axis (163), preferably the rollers (166) of the first guide arms (166). 161) are mounted via a common, continuous first roller axle (167) and the rollers (166) of the second guide arms (162) are mounted via a common, continuous second roller axle (168), these roller axles (167, 166) being in the axial direction (A) extend and wherein preferably each roller (166) on both sides in the axial direction (A) in each case a guide arm (161,162) are taken. The landing gear apparatus (1) according to claim 9, wherein the first guide arms (161) are respectively arranged in the axis direction (A) offset from the second guide arms (162). Chassis device (1) according to one of claims 1 to 10, wherein the chassis device (1) further comprises guide rollers (170) for lateral guidance of the extension and retraction movement on the crash barrier section (2). Suspension device (1) according to one of claims 1 to 11, wherein the actuator element (14) is electrically or fluidly actuated, wherein the actuator element (14) preferably at least one air bladder (141, 142), preferably two air bladders (141,142) comprises and / or wherein the actuator element (14) comprises a gear, in particular a rack gear, and a crank, in particular for manual operation. Guard rail section (2) with at least one landing gear device (1) according to one of claims 1 to 12. Guard rail section (2) according to claim 13 with a plurality of chassis devices (1), wherein the chassis device (1) preferably in a particular regular longitudinal distance along the longitudinal extent of the Guard rail section (2) in the axial direction (A) are arranged, said longitudinal distance is 4 to 10 meters, in particular substantially 3 to 5 meters. Guard rail section (2) according to claim 13 or 14, wherein the guard rail section (2) has a substantially U-shaped cross-sectional shape with downwardly directed opening (23), wherein the landing gear device (1) in the forming between the U-shape legs (21 , 22) of the crash barrier section (2) formed receptacle (24) is preferably fully retractable, wherein the guard rail section (2) with retracted landing gear device (1) on end portions of the legs (21,22) and rests with extended landing gear device (1) from the driving plane (3) raised on the driving element (165) rests and on the driving element (165) in the direction of travel (F) is movable.

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