DE8234111U1 - Tank trucks that can be filled with liquid, in particular slurry tankers, with a cover closure device - Google Patents

Description

ANDRAE - FLACH · HAUG EUROPEAN PATENT ATTORNEYS Pale-, jnwall Dlpl.-Phys. Flat, Max-JoBCfi-Plf-i; 6, D-6200 Rosenhelm .

ROSENHEIM Dlpl.-Phys. Dieter Flach Max-Josefs-Platz β D-8200 Rosenhelm Telephone: (0 8031) 193 52 Telegram: Physicist Rosenhelm

MONKS

Dlpl.-Chem. Dr. Steffen Andrae Dipl.-Ing. Dietmar Haug Steinstrasse 44 D-8000 Munich 80 Telephone: (089) 482089 Telegram: pagema Munich Telex: 5216281 afho d

Hans Deham, Almfeldstrasse 4, 8221 Taching am See

160 G 27

CjAit liquid-fillable tank trucks, in particular
Slurry tanker, with a lid locking device

The invention relates to a tank truck that can be filled with liquid, in particular a liquid manure truck, with a lid closure device according to the preamble of claim 1.

Tank trucks with such a commonly used cover closure device are well known.

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They are necessary to dftinit after filling the tanker truck with liquid manure when driving jerkily this does not squirts out of the upper filling opening again. To easily open and close this To enable cap is on the top of such a known slurry tanker Linkage attached to the tractor, in order to open and close the cover from there can. But especially when using newer tractors with a driver's cab »this leads to Problems. On the one hand, the linkage cannot be made so long, otherwise the driver's cab in the case of tight bends, to the one that ends at the front end of the tank. Linkage. on the other hand but the linkage can no longer be operated from the driver's cab itself because the driver's cab is closed is attached to the front of the tractor. In other words, the driver has to get off the tractor in order to open and close the upper cover lock on the slurry tank via the rods.

In contrast, it is the object of the invention to provide a Closure device for a lid for a tank truck that can be filled with liquid, in particular To create slurry tankers with which the disadvantages of the prior art are overcome and which are simple and is easy to operate.

According to the invention, the object is specified in the characterizing part of claim 1 Features solved. Advantageous configurations of the invention are specified in the subclaims.

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The present invention creates a tank truck with a cover locking device in an astonishingly simple manner, which operates completely automatically, without a driver having to get out of the driver's cab of the pre-tensioned tractor. According to the invention, this is achieved in that a floating body is firmly attached to the underside of the closure cover. Ultimately, when the tank is full, the cap is automatically closed by means of this floating body. However, in order to allow the filling unhindered, the arrangement is such that the float comes to rest away from the filling opening on one side of a vertical plane extending through the pivot axis of the cover, while the cover is arranged opposite on the other side of this vertical plane. In other words, when filling <? & E. The tanker tries to pivot the cap further away from the opening into the inside of the tank via the buoyancy forces applied to the float.This is ultimately prevented by a stop element provided inside the tank, so that the cap is held in its initial position during the entire filling process. In order to close the cap now, the driver only needs to start, as usual. Due to the inertia, a sudden build-up of liquid is caused in the rear area of the tank when starting up. This is followed by a return flow of the liquid to the front area of the tank, so that the buoyancy center of the float over the through the pivot axis of the

Cover running vertical plane out to, is taken in front. In this position, the float and the buoyancy forces can now so lift the cap up to its upper stop, for example on the inside of the tank.

In an advantageous embodiment of the invention according to claim 5, the stop is for limiting the pivoting of the closure cap attached so that the distance between the center of buoyancy and the vertical plane at least 5% of the distance from the lift center to the pivot axis of the cap is. On the one hand, this makes the filling process safer Hold the closure cap in its lower, open position and also a quick and safe one Locking is guaranteed even with a slight start.

Further advantages, details and features of the invention result from the exemplary embodiment discussed below with reference to a drawing.

In the figure is a schematic longitudinal section in a partial view of a tank 1 with one on its Opening 3 provided on the top side for filling is shown. The opening 3 consists of a short pipe section 5. Furthermore, a closure cover 7 is provided around a pivot axis 9 in the area of the pipe section 5 or on the upper inside 11 can be adjusted between two extreme positions can.

At the end of the closure cover opposite the pivot axis 9, a floating body 17 is fixedly arranged on its underside 13 via an angle piece I5. In its lower starting position, the cap 7 is held in the float 17 in such a way that a vertical or gravitational plane 21 parallel to the gravitational force and running through the pivot axis 9 comes to lie between the buoyancy center 19 of the float 17 and the plane of the cap 7 . Furthermore, a stop 23 with a knob 25 is arranged on the upper inside 11 of the tank 1, on which the closure lid 7 comes to rest.
The structure of a tank described in more detail above is used in particular for filling, extending and distributing liquid manure on fields, for which the tank 1 is arranged on wheels 27 and has a distributor device 29 (not shown in detail) for distributing the liquid manure at its rear end.

In order to prevent in particular on the way to the field, that in the filled state slurry from the upper opening 3 heratxsspritzt by driving backwards and thereby the car itself and the streets are polluted, is the above-described method Closing device provided with the closure cover 7, the mode of operation of which will be discussed below will.

If the tank 1 is slowly filled through the opening 3, so the float 17 dives more and more

into the manure. The result, on the float 7 acting buoyancy forces cause a torque on the in the position shown Closure cover 7 in such a way that it tries to move away from the opening 3 in the figure shown to turn right. This follows because the center of buoyancy 19 of the float 7 on the comes to lie on the right side of the vertical plane 21 and pivoting in the opposite direction yes, initially against a sinking of the float which makes lifting forces necessary. To pivot the closure cover 7 and the To prevent the floating body 17 from moving away from the opening 3, the stop element 23 is provided, which forms the closure cover holds in the position shown. It has proven to be beneficial that the distance of the center of lift 19 to the vertical plane 21 at least 5% of the pivoting radius of the Float around the pivot axis 9 »that is, the distance between the center of buoyancy 19 and the Verschwenkach.se 9 is.

During the entire filling process, the cap remains in the position shown. In order to close this now, the driver only needs to drive off briefly, due to the occurring Moments of inertia the liquid filling inside the tank initially to the rear, i.e. opposite to the direction of travel - thus displaced to the right in the exemplary embodiment shown will. The fluid play increases in the rear area and falls in the front Area of the tank.

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Since the moment of inertia is only limited for the short term acts, the liquid level levels out again immediately afterwards, with one Backflow to the front area of the tank - in the direction of travel - occurs. This will make the Closure cover 7 carried along with the float 17 on the other side of the vertical plane 21, so that the buoyant forces applied to the float 17 then generate an opposite torque initiate on the closure cap and then move it into its dashed lines in the figure Raise the closure layer, whereby the edge area of the closure cover 7 or parts thereof come to rest on the inside 11 of the tank 1.

Descending, for example, from a driver's cab of a tractor to close the cover, is therefore no longer necessary. If, during the evacuation process on the field, the liquid level slowly increases falls again, the sealing cap also slowly lowers. But this is not a problem because then the liquid level is already so low that no liquid even with jerky driving more can squirt out of the upper opening 3.

Notwithstanding the illustrated Ausführungsunßsbeispiel it is also possible that the pivot axis 9 in the Pipe section 5 is attached higher, and that on the opposite side in the pipe section 5 a stop element is provided on which the closure cover 7 with the same cross section as the Opening 5 higher than in the embodiment shown

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example comes to the plant. Furthermore, the stop element 23 also elsewhere, e.g. B. be mounted in the bottom area of Tanke.s 1, so that the Knobs 25 in the open position of the closure cover rests on the drive body 17. In a further modification it is also possible to use the stop 23 to be attached firmly to the underside of the lid, so that its knob 25 in in the open position of the cap on the inside of the tank.

Finally, it should be noted that the closure cover is also around its seen in the direction of travel pivot axis lying at the front of the opening 3 can be attached.

Claims (1)

ANDRAE ■ FLACH ■ HAUG EUROPEAN PATENT ATTORNEYS Patent attorney Dipl.-ph / a. Flad). Max-Josefs-Platz β. D-MOO rose helmet. ROSENHEIM Dipl.-Phys. Dieter Fisch Max-Josefe-Platz 6 D-8200 Roeenhelm Telephone: (08031) 19352 Telegram: Physicist Rosenheim MONKS Dipl.-Chem. Dr. Steffen Andrae Dipl.-Ing. Dietmar Haug Steinstrasse 44 D-6000 Munich 80 Telephone: (089) 482089 Telegram: pagemx. MO «Aen Telex: 5216281 afhod Hans Beham, Almfeldstrasse 4, 8221 Taching am See G 27 Tank trucks that can be filled with liquids, in particular Slurry tanker, with a lid locking device Expectations: 1. Tank trucks that can be filled with liquid, in particular slurry tankers, with a Deokelverschlußeinrichtung and with an opening provided on the top of the tank and a -02 there by one that runs transversely to the direction of travel Verschwenkach.se pivotable closure cover, characterized in that on the underside (13) of the closure cover (7) a to the cover plane staggered floating body (17) is attached, so that..with the cover open (7) the. extending through the pivot axis (9) Vertical plane (21) between the cap (7) and the buoyancy center (19) of the float (17) runs, and that a stop (23) on the inside of the tank (11) or the bottom of the cap to limit the pivoting path of the closure cover (7) from the opening (3) way is provided. 2. Tank truck according to claim 1, characterized in that the closure cover (7) is attached to the inside of the tank (11) and with its top in the closed state on the Inside wall of the tank (11) is in contact. 3. Tank truck according to claim 1 or 2, characterized in that the stop (23) is fastened on the inside (11) and at its free end a knob (25) for resting the closure cover (7) or the float 2p (17). i \. Tankers according to one of claims 1 to 3 "characterized in that the stop (23) is mounted so that the distance of the buoyancy center (19) to the comparison by the - 02 - pivot axis (9) extending vertical plane (21) is at least 5% of the pivot radius formed by the distance between the center of lift (19) and Verichwenkachse (9). 5. Tank truck according to one of claims 1, 2 or 4, characterized in that the stop (23) is mounted on the underside of the closure cap (7) and at its free end a knob (25) for resting on the inside of the tank (11) having.