Road structure – process – or apparatus – Traffic steering device or barrier
Patent
1991-08-07
1993-09-28
Britts, Ramon S.
Road structure, process, or apparatus
Traffic steering device or barrier
49 33, E01F 1300
Patent
active
052482154
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The invention relates to a road barricade, in particular a car park barricade, that is fastened to the road surface and that has a barricade element optionally positionable parallel to the road surface or in a position at an angle thereto, said barricade element being swivellable upwards about an axis parallel to the road surface and vertical to the blocking direction by means of a drive mechanism comprising a spindle element.
A corresponding barricade for car parks is known from German patent DE-U-8 708065. Along a spindle element fixed on the road surface is moved a threaded bush from which extends a plate connected by an articulated joint to the barricade element for swivelling the barricade element by moving the sleeve. The barricade element is swivelled up and down by a forced drive mechanism.
The object of the present invention is to develop a road barricade of the type described above such that automatic blocking and opening of the road surface can be achieved with simple design means. It should also be ensured that the risk of injury is ruled out, particularly contusions when the barricade is swivelled up into the non-blocking position. Furthermore, the drive mechanism and the spindle element must be accessible even when the drive mechanism, for example, is out of order, thus permitting maintenance and repair work.
The object is substantially attained in accordance with the invention in that the barricade element has, facing away from the road surface, at least one feed line/curve along which an adjustable sliding element can move for swivelling the barricade element. The distance between the feed line/curve and the road surface, seen from the rotary axis of the barricade element, can increase towards its free end or initially decrease and then increase.
The curve path of the feed line last described follows a geometry similar to a curve with a minimum in the area of the road surface. As a result, an even swivel upwards and downwards of the barricade element is assured. Equal swivel angles can be covered in the same units of time.
Accordingly, it is possible with simple design means to swivel the barricade element upwards, with the downward swivel being assured by gravity. This return swivel motion is not however an abrupt one; there is a delaying effect caused by the interaction of the feed line/curve and the returning sliding element. As a result, the risk of contusions from downward swivelling of the barricade element is ruled out.
The drive mechanism preferably operates the spindle element, such as a recirculating ball screw, that is parallel to the road surface and covered by the barricade element when the latter is parallel to the road surface, by means of which element a sliding block or roller carrier containing the sliding element is movable. Feed wheels can extend from the sliding element that interact with the feed line/curve to swivel the barricade element.
To protect the drive mechanism, which can be an electric motor, known from small power tools such as drills, for example, a slipping clutch can be provided between the spindle element and the drive mechanism itself.
A gearbox is preferably connected between an electric motor and the spindle or element having the same effect, in order to permit setting of a desired swivelling speed. In addition, the motor can be switched off by means of a current limiter, i.e. the voltage supply is interrupted when the motor draws too much current.
Two feed lines/curves symmetrical to the longitudinal axis of the spindle element are preferably provided that are formed by the edges of flanges which in their turn are provided with a cladding to form the barricade element. The flanges themselves are passed through by the rotary axis or shaft, so that a cladding material can accordingly be selected that is quite thin. The cladding can be U-shaped in section.
It is also possible to design at least the free end of the barricade element flexible, for example by spiral element sections.
The sliding block passed through by the spindle element runs
REFERENCES:
patent: 2913906 (1959-11-01), Sinclair
patent: 4050190 (1977-09-01), Mazzone
patent: 4934097 (1990-06-01), Quante
Bierman Jordan B.
Britts Ramon S.
Manfred Fladung GmbH
Schoeppel Roger J.
LandOfFree
Road barricade does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Road barricade, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Road barricade will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2187633