EP0748903A1 - Security device for a drainage channel - Google Patents

Abstract

The body of the gutter is U-shaped with sidewalls, having a covering grille on it or on a frame partly enclosing it. The grille fits in recesses in the sidewalls or frame. The grille (5) is positively secured in the longitudinal direction to one or both sidewalls (2), typically by a pin (10) protruding from a drilling in the sidewall or frame and engaging in a mating drilling or recess in the grille. Alternatively, a protrusion on the grille can engage in a drilling in the wall or frame. The frame can be a sheet-metal pressing, with lateral stop faces extending vertically upwards and horizontal supporting surfaces.

Description

The invention relates to a safety device for a drainage channel according to the preamble of claims 1, 7 or 8.

A safety device for a drainage channel is known for example from DE 42 41 707 A1.

In the safety device shown there, a cover that can be fitted is attached to the upper edge of a channel body. In the side walls of the channel body, recesses are arranged essentially opposite one another. A traverse engages in the recesses and is positioned transversely to the longitudinal axis of the gutter in the interior of the gutter. The attachable cover is fastened without screws using a fastening device or by means of a screw connection on the crossmember against removal.

The crossbeam itself is provided with a clamping device at at least one end, so that the crossbeam is fixed in the recesses in the side inner walls.

A surface drainage device, in particular a drainage channel, is known from DE 42 41 705 A1, which has a cover, which in turn can be attached to the channel body with attachment devices.

The fastening devices comprise a latch which is mounted on the cover and which can be moved into a locking position in the direction of a longitudinal edge of the cover. The bolt can still be moved from the locked position into an open position.

A screwless fastening of the cover can be carried out by means of the bolt described. The fact that the bolt has latching devices which are in resilient engagement with the cover ensures that the bolt is fixed in the corresponding position at least in the locking position. This should make it impossible to open or remove the cover accidentally.

However, it has been found that in surface drainage facilities, in particular drainage channels of a load class B to F according to DIN 19580, i.e. H. Channels whose grates are used by vehicles, depending on the load class, in particular when driving axially and braking vehicles directly on the channel strand, shear forces between the cover gratings and the frames or the channel bodies occur.

If the grids are not adequately secured and due to the necessary manufacturing tolerances, the grids are pushed together along the channel run, causing inadmissible gaps or openings in the channel cover. This leads to disadvantages in traffic safety.

The rust protection systems described in the beginning in screwless or screwed form can only absorb low axial thrust forces.

In this respect, the previously known solutions for axial securing are not sufficient, since in particular in drainage channels without edge protection or with edge protection Sheet metal profiles the forces occurring cannot be absorbed sufficiently and can be derived via the channel body.

It is therefore an object of the invention to provide a safety device for a drainage channel, with which a sufficient fixing of a cover grating on the respective channel bodies can be achieved even with higher load classes and channel systems, the channel body without edge protection or those which are provided with sheet metal profile edge protection .

The object of the invention is achieved with an object in accordance with the features of independent claims 1, 7 or 8, the subclaims comprising at least expedient refinements and developments of the basic ideas of the invention.

A first basic idea of the invention is to propose a securing device for a drainage channel, which starts from a channel body which has a substantially U-shaped cross section and has opposite side walls. An attachable cover grate lies on the side walls or the upper edge of the channel body. If necessary, the upper edge of the channel body is surrounded by a frame, the cover grille resting on the frame. The cover grille is guided or fixed laterally by the frame or the design of the upper edge of the channel body.

To absorb axial forces, d. H. The cover grating is additionally fixed in the longitudinal direction by forces acting along the course of the drainage channel via a positive connection which is formed on at least one of the side walls.

This form-fitting connection according to the first basic idea of the invention can comprise a pin, which in at least one of the side walls of the channel body is hammered in, pressed in or inserted. The pin itself protrudes upward and has a free section.

This free portion of the pin engages in an associated recess or hole in the grate, so that the aforementioned axial displacement, i.e. H. moving in the longitudinal direction of the channel is excluded. The positive connection according to the first basic idea of the invention, i. H. the pin, thus takes over the axial securing and the introduction of the thrust forces into the channel body when the cover grille is put on or put on.

Alternatively, a pin fixedly attached to the cover grille can engage in a cast-in hole or hole in the corresponding side wall of the channel or in a recess in a firmly cast-in sheet metal frame. In the latter case too, the shear forces are either indirectly or directly introduced into the channel body via the frame.

An alternative of the first basic idea of the invention is that the positive connection comprises at least one cam formed on the frame or a protruding projection formed in the upper region of the side walls, which can also be an extension of the sheet metal frame itself, the cam or the Engage the extension in an associated recess in the cover grate, so that there is axial securing.

It is within the meaning of the invention that the pin and cam lock can be combined with one another. The corresponding cover grille can be manufactured as a standard part, which has recesses corresponding to a pin and a sheet metal cam lock. This ensures that one and the same cover grating can be used with different drainage channels or different channel bodies, which either Pin lock, especially in the case of the frame-less embodiment, or a sheet metal cam lock, ie have a cam protruding upwards on the frame.

A second basic concept of the invention is that the securing device interacts with a cross-member located in the channel body, the cross-bar being inserted in a known manner with its ends in two substantially opposite recesses in the side inner walls of the channel body. The crossbar is in the inserted state transversely to the longitudinal axis of the gutter inside the gutter body. The traverse is used for screwless or locking the cover grille from above using a screw connection.

According to the second basic concept, the cover grate used in this embodiment is further developed such that at least sections of existing support webs which run transversely to the channel have at least sections such a length that they positively surround the cross member on both sides after the cover grate has been put on.

This crossbeam, also locking plate, is thus positively enclosed on both sides by the supporting webs, so that on the one hand by screwing or form-fitting connection using the crossbeam and on the other hand by the above-mentioned enclosing of the crossbeam, the system both without removing the cover grate and against axial displacement without additional measures are secured. In this embodiment, according to the invention, adequately dimensioned cover gratings, trusses and channel bodies are used.

The advantage according to the second basic idea of the invention consists in an axial self-locking by the support webs which are at least partially extended.

In a second embodiment of the second basic idea of the invention, the cover grating has an at least one-sided edge profile, i. H. a profile, which runs in the longitudinal direction of the channel, which, after the cover grille has been put on, engages around the crossbar in a form-fitting manner on both sides.

In this embodiment, the edge profiling is thus extended in the area of the position of the cross member and preferably has two extensions which form a U-shape. The U-shaped profile of the edge profile of the grating then engages around the crossbar as mentioned above, so that the required axial securing and the introduction of shear forces into the channel body is ensured.

Of course, the first and the second embodiment can be combined in accordance with the second basic concept of the invention in such a way that the edge profile of the cover grate is specially designed and at least two support rods are extended such that they can grip around the crossbar when the grate is in place.

In a further embodiment, at least one leg of the special edge profiling of the cover grate has a protruding pin-like extension which engages in an associated recess in the crossmember, as a result of which the amount of axial thrust forces that can be absorbed and dissipated increases.

The third basic idea of the invention is characterized by a combination of embodiments according to the second basic idea of the invention with a form-fitting pin or cam connection.

In particular in this third basic idea of the invention, the cross member is largely freed of an axial force absorption by the additional pin or cam lock. The trained overlapping side profiles of the grating or the special supporting webs explained above then take over the function of securing the crossbeam in position, so that the latter is prevented from sliding out of the cutouts in the side inner walls with repeated, changing loading of the channel body, in particular by driving over it.

This increases the reliability of the entire gutter system.

It is in the spirit of the invention that the safety devices explained can be selected depending on the respective grate variants. The embodiments according to the first basic idea of the invention can be used in particular when no protection against lifting or removing the cover grids is required, i. H. no trusses are necessary. In particular, these embodiments can be used when cover gratings with flat or short supporting webs, for. B. sheet metal grating can be used.

The invention will be explained in more detail below using an exemplary embodiment and with the aid of figures.

Fig. 1a

eine Längsschnittdarstellung einer Entwässerungsrinne mit einem Blech-Stegrost und vorhandener Stiftsicherung zur Aufnahme axialer Schubkräfte;

Fig. 1b

einen Längsschnitt durch eine Entwässerungsrinne mit einem Blech-Stegrost und einer Blechnockensicherung zur Aufnahme axialer Schubkräfte;

Fig. 1c

einen Querschnitt durch eine Entwässerungsrinne mit kombinierter Stift-/Blechnockensicherung;

Fig. 1d

eine Draufsicht und Teilschnittdarstellung längs der Linie B-B gemäß Fig. 1a;

Fig. 2a

eine Ausführungsform einer Sicherungseinrichtung für eine Entwässerungsrinne in Längsschnittdarstellung mit einem Guß-Stegrost und Tragstegen zur Schubkraftübertragung;

Fig. 2b

eine Draufsicht und Teilschnittdarstellung längs der Linie B-B aus Fig. 2a mit Tragstegen zur Schubkraftübertragung;

Fig. 2c

eine weitere Ausführungsform mit einem Guß-Stegrost, wobei ein spezielles Randprofil des Guß-Stegrostes die Schubkraftübertragung übernimmt;

Fig. 2d

eine Seitenansicht auf eine Entwässerungsrinne mit Stegrostsicherung zur Aufnahme axialer Schubkräfte;

Fig. 3a

eine Längsschnittdarstellung einer Ausführungsform mit einem Abdeckrost in Guß-Stegrostausführung und zusätzlicher Stiftsicherung;

Fig. 3b

eine Draufsicht und Teilschnittdarstellung längs der Linie B-B nach Fig. 3a; und

Fig. 3c

eine Seitenansicht auf eine Entwässerungsrinne mit zusätzlicher, teils weggebrochener Darstellung der kombinierten Ausführungsform Stegrost und Stiftsicherung.

Here show:

Fig. 1a

a longitudinal sectional view of a drainage channel with a sheet metal grate and existing pin lock to absorb axial thrust;

Fig. 1b

a longitudinal section through a drainage channel with a sheet metal grate and a sheet metal cam lock to absorb axial thrust forces;

Fig. 1c

a cross section through a drainage channel with combined pin / sheet metal cam lock;

Fig. 1d

a plan view and partial sectional view along the line BB of FIG. 1a;

Fig. 2a

an embodiment of a securing device for a drainage channel in a longitudinal sectional view with a cast web grate and supporting bars for the transmission of thrust;

Fig. 2b

a plan view and partial sectional view along the line BB of Figure 2a with support bars for thrust transmission.

Fig. 2c

a further embodiment with a cast web grate, wherein a special edge profile of the cast web grate takes over the thrust force transmission;

Fig. 2d

a side view of a drainage gutter with web protection to absorb axial thrust;

Fig. 3a

a longitudinal sectional view of an embodiment with a cover grate in cast iron grate design and additional pin lock;

Fig. 3b

a plan view and partial sectional view along the line BB of Fig. 3a; and

Fig. 3c

a side view of a drainage channel with additional, partly broken away representation of the combined embodiment of the grating and pin lock.

A first embodiment of the safety device for a drainage channel is described with reference to FIGS. 1a and 1b.

A channel body 1, which forms a drainage channel, has opposite side walls 2. On the inside of the side walls 2 there are cutouts 3 for receiving a cross member 4.

The cross member 4 is introduced into the interior of the channel body 1 and fixed by twisting or pivoting in the recesses 3 such that it assumes a position transverse to the longitudinal axis of the channel body 1.

The cross member 4 is used to attach a cover grate 5. In the first embodiment, the cover grate 5 is designed as a sheet metal grate.

In the example shown, the cover grating 5 is fastened to the cross member 4 by means of a screw connection 6 and rests on the upper edge 7 of a sheet metal frame 8.

The sheet metal part frame 8 accordingly forms a support for the cover grate 5 and at the same time serves to laterally fix the latter.

In the exemplary embodiment according to FIGS. 1a and 1d, a bore 9 for receiving a pin 10 is made in at least one of the side walls 2. However, the pin 10 can also be cast in during the casting of the channel body 1, so that the additional formation of a bore 9 can be omitted.

The pin 10 has a free, upwardly protruding section 11. This free section 11, which may have a circumferential conical chamfer 12, engages in a corresponding bore 13 in the profile of the grating 5, so that the resulting positive connection Absorbing at least axial thrust, d. H. of forces along the drainage channel, which act on the grating 5, is guaranteed.

It should be mentioned at this point that the presence of recesses 3 in the side inner walls 2 and the arrangement of a cross member 4 can be omitted when securing the Cover grating 5 against lifting out is not required.

A second exemplary embodiment according to FIG. 1b shows a sheet metal cam lock.

In this exemplary embodiment, the sheet metal part frame 8 is provided with an upwardly stamped and bent cam 20 which engages in an associated recess 21 on the cover grate 5.

The cam 20 of the sheet metal frame 8 is already formed during the manufacture of the sheet metal frame itself by a stamping and bending step, so that an axial locking can be formed in a simple manner without an additional locking pin.

1c shows an embodiment with a combined pin and sheet metal cam lock.

The cover grate 5 can be manufactured as a standardized component, which has the recesses 21 and 13 in the lower region 22 of its sheet metal profile, which have such a shape in diameter or in size that either the cam 20 or the free section 11 of the pin 10 can be included.

In a variant of the first exemplary embodiment, not shown, the cover grating can have a cam or extension directed towards the bearing surface of the frame or the side walls in its lower region of the profile, which cam in a corresponding hole or recess in the frame and / or in an upper section of the side walls of the channel body engages.

According to the described embodiment, the vertical side locking surface 23 and in particular the horizontal contact surface 24 of the cover grate 5 in Connection with the pin 10 and / or the cam 20 assigned an additional function with regard to the absorption and the deflection of axially acting thrust forces.

In the second exemplary embodiment according to FIGS. 2a, 2b and 2d, a channel body 1 with side walls 2 and a crossbar 4 arranged in recesses 3 are again assumed.

The securing device according to FIGS. 1a-1d can be used advantageously in particular if sheet metal webs, meshes or cast gratings are to be fastened axially without a locking plate or crossbar.

In contrast to the first exemplary embodiment, a cast web grate 30 is present as a cover grate. The cast web grate 30 has a multiplicity of support webs 31 which run essentially transversely to the channel body 1 and which, according to FIGS. 2a, 2b and 2d, are downward, ie. H. are tapered towards the bottom of the gutter. Inlet openings 32 are present between the supporting webs 31. In the second exemplary embodiment, at least two adjacent supporting webs 31, in accordance with FIGS. 2a and 2b, the supporting webs 310 and 320 are facing downwards, ie. H. extended towards the channel bottom that the opposite inner sides of the supporting webs 310 and 320 encompass at least a portion of the cross member 4 in a form-fitting manner.

Due to the conical design of the supporting webs 310, 320 mentioned above, tolerances in the axial securing and locking of the cast web grating 30 are compensated for by means of the crossmember 4, and on the other hand a wedge effect also occurs, so that undesired play in the longitudinal direction of the channel is avoided. The above exemplary embodiment ensures adequate axial securing when using cast gratings and, in the case of mesh gratings, primarily securing the crossmember or the locking plate against unscrewing from the recesses in the side inner walls of the channel body.

2c shows a variant of a cast web grate 30 which has shortened or shorter support webs 330. To ensure the axial securing in the longitudinal direction of the channel, the edge profile 34 of the cast web grate 30 is designed in such a way that the crossbar 4 is positively gripped in a section directed towards the side inner wall 2.

The special edge profile comprises two opposite legs 35, at least one of which has a U-shaped section for gripping the cross member 4.

The inner sides of the U-shaped cutout, namely the sides which are in operative connection with the cross member 4, can have a wedge surface shape, so that there is a play-free locking of the cast web grating 30.

In addition, the edge profile 34 can have a pin-like extension, not shown, which engages in an associated recess of the crossbar 4, not shown.

The embodiment according to FIG. 2c is particularly advantageous when a grate is used, the supporting webs of which are short or with a grate, e.g. B. mesh, the supporting webs can not absorb axial forces.

In a variant of the second exemplary embodiment, the cast iron locking device on the basis of extended supporting webs can be combined with the edge profile locking device in a lateral section of the cross member.

In the third exemplary embodiment according to FIGS. 3a to 3c, a combination of the axial securing variants which are described in the above exemplary embodiments is assumed. This combination is carried out with the aim that the axial forces are derived by pins or cams and the supporting webs or edge profiles prevent the cross member from being unscrewed from the recesses in the side inner walls.

In the third exemplary embodiment, too, there is a channel body 1 with side walls 2, a cross member 4 being arranged essentially transversely to the longitudinal direction of the channel body in a recess 3 in the side inner walls. The cast web grate 30 of the third exemplary embodiment has a bore or recess 41 in an edge section 40 of the edge profile for receiving a free section 11 of a pin 10, which is fixed in the side wall 2 of the channel body 1.

In this exemplary embodiment, it is possible, by simple dimensioning, to ensure that axial thrust forces, which act on the cover grate in the longitudinal direction when being driven over, are primarily absorbed by the positive connection between the pin 10 and the cast web grate 30 and in the channel body 1 to get redirected.

The gripping of the crossbeam 4 with the supporting webs 310 and 320 then preferably serves to secure the position of the crossbeam itself, so that it does not turn out or pivot out of the recesses 3 in the event of dynamic and alternating loads and there is therefore a risk that the covering grate in question will be flung upwards .

All in all, it is possible with the described exemplary embodiments, with drainage channels with or without edge protection made of sheet metal profiles, to achieve sufficient axial securing, in particular when driving over corresponding cover gratings of the channel system in the longitudinal direction, without undesired pushing together of the cover gratings with corresponding disadvantages with regard to traffic safety occurs.

Reference list

1

Channel body

2nd

side walls

3rd

Recess

4th

traverse

5

Cover grate

6

Screw connection

7

Top margin

8th

Sheet metal frame

9

drilling

10th

pen

11

free section of the pen

12th

Chamfer on the free section of the pin

13

Hole in the profile

20th

cam

21

Recess

22

lower section of the profile

23

vertical side locking surface

24th

horizontal contact surface

30th

Cast footbridge

31

Supporting bars

32

Inlets

310

special supporting bars

320

special supporting bars

33

Inside of the special support bars

330

shortened supporting bars

34

Edge profile

35

leg

40

Edge section

41

Recess

Claims (12)

Securing device for a drainage channel, comprising an essentially U-shaped channel body with opposite side walls, a cover grating which is arranged on an upper edge of the channel body or on a frame which at least partially surrounds the channel body in the upper region and which is guided laterally through cutouts in the side walls of the channel body or through the shape of the frame,
characterized in that
for absorbing axial forces, the cover grating (5) is fixed via a positive connection to at least one of the side walls (2) in the longitudinal direction of the drainage channel. Security device according to claim 1,
characterized,
that the positive connection comprises a pin (10) which is inserted into a bore (9) of at least one side wall (2) or a frame (8) partially projecting upwards, a free projecting section (11) of the pin (10) engages in an associated recess or bore (13) in the cover grate (5). Security device according to claim 1,
characterized,
that the positive connection comprises at least one pin-shaped extension fixed to the cover grate (5), which engages when the cover grate (5) is placed in associated bores in the side walls (2) and / or the frame (8). Security device according to claim 1,
characterized,
that the positive connection comprises at least one cam (20) formed on the frame (8) or a protruding projection formed in the upper region of the side walls (2) which engages in an associated recess (21) in the cover grate (5). Safety device according to one of the preceding claims,
characterized,
that the frame (8) is designed as a sheet metal part with an upward, vertical side locking surface (23) and a substantially horizontal bearing surface (24) for lateral locking and receiving forces introduced from above. Security device according to claim 4 and 5,
characterized,
that the cam (20) is a tongue-shaped, partially stamped, upwardly curved section of the horizontal bearing surface (24) of the frame (8). Securing device for a drainage channel, comprising an essentially U-shaped channel body with opposite side walls, a cover grating arranged on an upper edge of the channel body or on a frame partially surrounding the channel body in the upper region, which is guided laterally through recesses in the side walls of the channel body or through the shape of the frame, and at least one crossbeam which can be inserted with its ends in two substantially opposite recesses in the side inner walls of the channel body in such a way that it extends transversely to the channel longitudinal axis in the interior of the channel body,
characterized,
that the cover grate (5) has a plurality of support webs (31) which run essentially transversely to the channel, at least two of which adjacent support webs (310, 320) have such a vertical length, at least in sections, that the cross member (4) after the cover grate () 5) is positively surrounded on both sides. Securing device for a drainage channel, comprising an essentially U-shaped channel body with opposite side walls, - A cover grating arranged on an upper edge of the channel body or on a frame partially surrounding the channel body in the upper region, which is guided laterally through recesses in the side walls of the channel body or through the shape of the frame, and at least one crossbeam which can be inserted with its ends in two substantially opposite recesses in the side inner walls of the channel body in such a way that it extends transversely to the channel longitudinal axis in the interior of the channel body,
characterized,
that the cover grate (5) has an at least one-sided edge profile (34) with a leg (35) which surrounds the cross member (4) in a lateral section in a form-fitting manner on both sides after the cover grate (5) has been put on. Safety device according to claim 8,
characterized,
that the edge profile (34) consists of two essentially vertically extending, laterally opposite legs (35), at least one of the legs (35) in the region of the position of the crossmember (4) in the channel body (1) the crossmember (4) U- is designed to encompass form. Safety device according to claim 9,
characterized,
that the at least one leg (35) has a protruding, pin-like extension which engages in an associated recess in the crossmember (4). Security device according to claim 7,
characterized,
that the cover grate (5) has at least one side an edge profile (34) which surrounds the crossbar (4) in a lateral section adjacent to the enclosing section of the supporting webs (310, 320) after the cover grate is positively enclosed on both sides. Security device according to claim 7, 8 or 11,
characterized,
that the cover grating (5) is additionally connected to at least one of the side walls (2) of the channel body (1) via an interlocking pin or cam connection (10, 20) to absorb axial forces.

Images