DE3039556A1 - Sewer pipe cleaning high pressure hose deflecting mechanism - has automatically swivelling splaying arms on frame, locking against pipe mouth - Google Patents

Abstract

The sewer pipe cleaning system includes a high-pressure hosepipe led over a pulley rotatably mounted in a base frame, and then, partly lying against the pulley, into the open hole of the pipe being cleaned, the frame being detachably fastened to the mouth of this pipe. The base frame (17) has automatically swivelling spreader arms (21) mounted on it, fitting with force-locking effect against the mouth (8) of the pipe (5) being cleaned. Swivelling of the arm may be effected by a scissor-arm longitudinal guide-rod assembly (27,28) or by a fluid-driven piston-and-cylinder assembly.

Description

Device for the hose redirection of a high pressure

hose in sewer cleaning The invention is a Device for the hose deflection of a high pressure hose when cleaning sewers, consisting of a pulley rotatably mounted in a base frame, over which the hose in a curve and partially resting on the deflection roller from a hose reel starting out into the clear opening of the pipe to be cleaned, the Base frame is releasably attached to the mouth of the pipe to be cleaned.

When cleaning sewers using the high pressure flushing method with about 100 atm during retrieval by hydraulic steering of the high-pressure hose with a Flushing nozzle uses a hose pulley. Since the high pressure hose with nozzle is included the retrieval runs through an angle of 90 degrees between the sewer and the inspection shaft, high friction occurs on the upper edge of the duct and on the hose. Besides that there is a risk of damage to the hose connectors and the inspection shaft as well as the pipe mouth of the sewer to be cleaned.

With the OB 22 3 is a device mentioned at the beginning for the hose deflection of a high-pressure hose became known when cleaning sewers, in which the pulley is rotatably mounted in a base frame. The base frame has an upper, essentially horizontally protruding arm with which it at the The upper edge of the inspection shaft is anchored.

Another lower horizontal arm is height adjustable on the base frame held so that the entire base frame with the pulley by adjustment can be adapted to the various pipe widths and sizes of inspection shafts. This adaptation is nevertheless relatively labor-intensive because there are separate handles for this purpose are necessary to attach the base frame to the inspection shaft and to the pipe mouth of the to be anchored pipe to be cleaned.

The invention is based on the device mentioned at the beginning according to the subject of DE-OS 22 366 78 set the task of such a device to develop so that a comparatively automatic anchoring of the device takes place at the pipe mouth and a corresponding removal after completion Cleaning.

To solve the problem, the invention is characterized in that that automatically pivotable spreading arms are arranged on the base frame, elie itself Apply force-fit to the mouth of the pipe to be cleaned.

The proposed technical teaching becomes a completely new one Tread the path, because the arrangement of swiveling spreading arms on the base frame, which are frictionally applied to the mouth of the pipe to be cleaned a comparatively automatic anchoring of the base frame to the pipe mouth or on the assigned walls or the floor of the inspection shaft. By the arrangement of the swiveling spreader arms must have a separate setting on the base frame no longer take place because the spreader arms work automatically pivotable are.

In the implementation of the above-mentioned technical teaching there are several Embodiments possible.

A first preferred embodiment provides that the automatic The spreading arms are pivoted by means of a Schrenarm-trailing arm arrangement (Claim 2).

Another spread is also possible by pivoting the spreading arms are carried out by a fluidically operated piston-cylinder arrangement (Claim 3).

It is provided that between the base frame and the Spreading arms one or more piston-cylinder arrangements are provided, wherein the cylinder housing, for example, with the base frame and the piston rod with is connected to the respectively assigned spreader arm. These piston-cylinder arrangements can be operated fluidically, i.e. hydraulically or pneumatically. For this a separate power source can be provided, such as a compressed air source. After this but anyway on the motor vehicle that carries the hose reel, a high pressure source is available, the piston-cylinder arrangement can from this high-pressure source can be acted upon in a controlled manner. Water is used as the high pressure medium. as well it is possible to use compressed air instead of water for the entire cleaning arrangement to use.

The drive of the aforementioned pivotable spreader arms via the scissor arm trailing arm arrangement according to claim 2 or the drive by a piston-cylinder arrangement according to the Claim 3 can also be made without the supply of auxiliary energy.

The automatic pivoting of the spreading arms takes place that the entire base frame with the pulley rotatably mounted in the base frame is pushed onto the hose, the hose being passed through several guide brackets guided past the circumference of the pulley at an angle of about 90 degrees will.

The entire device is therefore attached to the hose alone.

To pass the hose around the pulley, the High-pressure flushing head removed from the front of the hose. Then the hose guided around the pulley in an arc by inserting it into the various guide bars, and after exiting the guide bracket in the front in the working direction, the High-pressure flushing head screwed on again.

The entire arrangement is now ready for use.

There is a high pressure source on the motor vehicle and on a hose reel the high pressure hose is rotatably arranged. The motor vehicle is now driving so close the hose reel to the inspection shaft so that the hose is approximately vertical can be led down from the reel into the inspection shaft, while at the same time the entire pulley with the hose and the rinsing nozzle at the front of the hose is lowered into the inspection shaft. It is important to establish that that it is not necessary to separate the base frame with ropes or chains hang up, but the base frame is carried by the hose alone. As soon the entire device is at the level of the mouth of the pipe to be cleaned, the high pressure source is switched on and the high pressure medium emerges at an angle backward-facing recoil bores in the flushing head, so that the flushing head by the recoil force of the high pressure mediWm the inside of the Channel wall moved forward in the channel.

The hose reel will now be unlocked so that the hose will operate automatically is drawn into the sewer by the drive of the high-pressure flushing head. Because of the prevailing friction between the pulley and the hose tries The entire device, consisting of the base frame, runs forward in the duct and pulley to pull into the mouth of the pipe to be cleaned. For this purpose, the base frame has front, movable stops that -as soon as they in contact with the mouth of the pipe to be cleaned or with the walls or the bottom of the inspection shaft - the drive mechanism for the Activate the spreading arms so that the spreading arms automatically pivot outwards and are frictionally attached to the pipe mouth or the walls of the inspection shaft or create its soil.

The high pressure flushing head exerts a pulling force of approx 40 kp from, so that the entire device due to the friction of the hose on the guide bars and due to the deflection on the deflection pulley with a force from. about 40 kp is held at the mouth of the pipe to be cleaned.

Uln the llaltekraft dr device on the muzzle or on the Raising the walls of the inspection shaft is a preferred embodiment here a translation mechanism is provided so that a higher spreading force is achieved can be.

Here, according to the subject matter of claim 4, the scissor arm trailing arm arrangement formed in that on the (acting as a movable stop) cross member a scissor arm is pivotably attached, which swivels with a second scissor arm is connected, which in turn is pivotably mounted on the base frame is Due to the arrangement of these two scissor arms, the movable stop moves (Cross beam) immediately seen in the working direction to the rear, because the mentioned Scissor arms are folded in when the cross member is at the muzzle or hits the floor or the wall of the inspection shaft. With the aforementioned arrangement so the displacement of the cross member against the working direction is given.

For power transmission, that is, to increase the spreading force, is it is provided here according to the subject matter of claim 5 that the spreading arms Swiveling on one side each are connected to the cross member and at a distance from The center of gravity on the cross member is one trailing arm pivotable on the one hand the spreader arm and on the other hand is pivotally attached to the base frame.

Due to the double pivoting mounting of the spreader arms (on the one hand on the cross member and on the other hand in the sand of this on the trailing arm) will be created the power transmission described, which increases the spreading force can be.

In the other embodiment described, according to the subject matter of claim 3 (fluidically acted piston-cylinder arrangement) it is provided that in the displacement path of the cross member a first piston-cylinder arrangement in such a way is arranged that, for example, the cylinder housing on the base frame and the piston rod attaches to the movable cross member. By moving the cross member b, stop at the pipe mouth or the walls or the bottom of the Inspection shaft This pushes this piston-cylinder arrangement together, the one located in it Hydraulic fluid is pressurized and this pressure can now be used in a second piston-cylinder arrangement are initiated, which the spreading arms apart in the sense of a spreading movement, pivoted. With this type of drive the supply of a separate drive means (e.g.

of the high pressure medium) on the piston-cylinder arrangement for pivoting the spreader arms .avoid as soon as the high-pressure flushing head is in the pipe to be cleaned has advanced far enough forward (e.g. it has the next revision shaft reached) when the high pressure source is switched on, the hose reel is driven by an electric motor driven in the winding direction, so that the high pressure hose against its Pulling direction is withdrawn in the direction of the pulley. Here is now the actual rinsing process takes place, because the high pressure hose builds behind you in the direction a strong pressure flow to the deflection roller, which removes the deposits in the pipe Drift in front of you and let it flow off in the direction of the pulley.

In the area of the pipe mouth where the base frame of the entire device is firmly anchored, so appears in the course of this cleaning process a strong current of deposited material. To avoid the base frame as an obstacle to flow, the deposits washed out of the pipe are washed out prevented in the inspection shaft, it is according to the subject matter of claim 10 provided that the guide bars form the standing surfaces of the base frame. Herewith it is ensured that the deposits washed out through the guide bar of the Can flow through the base frame to the rear and no further flow obstacles are more in the way.

To prevent the high pressure nozzle accidentally through the guide bracket the pulley is pulled through and the pulley is unintentionally thereby falls into the inspection shaft, it is according to the subject matter of claim 9 provided that the diameter of the guide bracket leading the hose is smaller than the diameter of a stop sleeve slidably held on the hose. This stop sleeve then rests behind the high pressure head of the hose and jams when the hose is retracted on the front itbügi (it is dimensioned so that that it cannot be pulled through the front guide bracket) so that unintentional pulling through of the hose together with the high-pressure head the guide bar is avoided.

As soon as the high-pressure flushing head together with the stop sleeve on the front If the guide bar is attached, the high-pressure wave can be switched off. After this then the tensile force of the high-pressure hose in front of the pulley is no longer applicable, pivot the spreader arms automatically return to their rest position because the counterforce on the movable stop (cross member) has now been omitted.

The entire device can now easily through complete Winding up the hose can be removed from the inspection shaft without doing this other work processes, such as lifting out with a winch or the like, are necessary.

In order to avoid that the pipe mouth through the spreading arms themselves or the walls of the inspection shaft are damaged, it will be after the object of claim 7 preferred if at least the 'From senseiten of the spreader arms and the cross beam with Tread rubber are covered.

In order to also avoid that the free ends of the spreading arms in their rest position on the ladder brackets that may be in the inspection shaft hook, is preferred according to the subject matter of claim 6 if the free, pivotable ends of the spreading arms Abweisbügel are arranged.

To the ls Grenzuny of the Vcrschicbunysweg the cross traverse to the rear in the direction of the pulley, it is preferred according to the subject matter of claim 8, if the base frame has a stop bracket in the direction of the pipe mouth, the bB spread spreading arms forms the foremost part of the device.

The subject matter of the present invention does not result only from the subject matter of the individual claims, but also from the combination of the individual claims with one another.

All information and features disclosed in the documents in particular those in the drawings. Spatial training shown are essential to the invention claimed insofar as they are individually or in combination compared to the prior art are new.

In the following, the invention will be described on the basis of only one embodiment Illustrative drawing explained in more detail. Here go from the drawings and their Description of further features and advantages of the invention that are essential to the invention.

They show: FIG. 1 schematically drawn sectional view of a sewer cleaning device with a pulley according to the present invention; Fig. 2 side view with partial section of the device in its working position, in which it is at the The mouth of the pipe to be cleaned is anchored; 3 side view of the device in rest position; Fig. 4 plan view of the device of FIG. 3 in the direction of Arrow IV; Fig. 5 plan view of the device according to Figures 3 and 4 in the direction of the arrow V.

In Fig. 1, the processes in the sewer cleaning are shown schematically. On a motor vehicle not shown in detail, a hose reel 1 is in the Pivot point 2 rotatably mounted. The motor vehicle is like this with the hose reel 1 moved close to the upper edge of an inspection shaft 4 that the on the Hose reel 1 wound hose 3 essentially vertically into the inspection shaft 4 can be introduced. The device according to the invention is on the hose 3 threaded according to the description above, with those not shown in detail Base frame in pivot point 6 rotatably mounted deflection roller 7 the deflection of the hose 3 in the direction of the pipe mouth 8 of the pipe S to be cleaned takes over.

In the illustration of FIG. 1, it is assumed that the entire device already firmly anchored to the pipe mouth 8 with its pulley 7 is.

The anchoring takes place in that the not shown Spreading arms either support themselves on the pipe mouth or on the side walls of the Revision shaft 4. Likewise, the entire device can be placed on the floor 9 of the revision shaft 4 stand up, provided the pipe bottom 10 of the pipe to be cleaned 5 is flush with the Bottom 9 of the inspection shaft 4 would be.

In the illustration shown, the high pressure source is on the motor vehicle switched on, so that from the nozzle head 11 from recoil bores 14 (cf. Rig. 2) High pressure jets are emitted obliquely backwards in the direction of arrow 12 and the nozzle head 11 thereby moves forward in the direction of arrow 13 into the area to be cleaned Tube 5 moved. As a result, the hose 3 is unwound from the hose reel 1, guided around the deflection roller 7 and inserted into the tube 5.

The nozzle head 11 moves substantially in the vicinity of the pipe invert 10 in direction 13 forward.

Fig. 2 shows further details in the work situation FIG. 1. It is shown here that a front cross member is attached to a base frame 17 37 is attached. As soon as this cross traverse 37 in the direction of arrow 40 from the front ner a force is applied (this force is determined by the feed force of the Nozzle head 11 generated) and at the same time the cross member 37 at the pipe mouth 8 or rests against the wall of the inspection shaft 4, the cross member 37 shifted backwards in the direction of arrow 40, wherein simultaneously the later to be described scissor arm trailing arm mechanism of the spreading arms acted upon is so that the spreading arms 21, 22 (see also Fig. 4) pivoted outward be and either to create a positive fit on the muzzle 8 or to the Walls of the inspection shaft 4.

The illustration according to Fig. 2 shows the locked position of the base frame, and it can be seen that a scissors arrangement can be pivoted on the cross member 37, consisting of two scissor arms 27 and 28 is arranged. The front scissor arm 27 is here in a pivot point 33 (see Fig. 4) pivotable on the cross member 37 stored, whereas the other end of the scissor arm 27 via a pivot point 29 is connected to the second scissor arm 28. This scissor arm 28 is in turn again with its rear end in the pivot point 30 on the base frame 17 of the device stored.

By moving the cross member 37 in the direction of arrow 40 to the rear the scissor arms 27, 28 are unfolded into the position shown in FIG A further locking mechanism is achieved by stopping the scissor arms on the muzzle 8 results. For better adaptation to different pipe diameters is with the rear pivotable end of the scissor arm 27 is connected to a stop plate 26 which for example, can rest on the upper end face of the tube 5.

But it is not only the position of the entire device shown in FIG. 2 in relation to the tube 5 possible, as can the device with the base frame 17 move further into the tube 5, just until the spreading arms 21 or 22 or the front scissor arm 27 with its stop plate 26 on the barrel mouth 8 or rest on the walls of the inspection shaft.

The introduction and deflection of the hose 3 around the deflection roller 7 takes place in that the hose 3 is initially through a rear guide bracket Yes is guided and is then deflected around the pulley 7 and for guidance through another guide bracket 19 is passed through.

Another guide bracket 20 is located at the front end of the base frame 17 arranged, the hose 3 is substantially horizontal to one of the front Completion of the base frame 17 forming stop bracket 24 holds.

So that the hose does not unintentionally jump off the pulley 7, lateral mounting brackets 23 are also provided, which the deflection roller 7 laterally mounting.

In the working position shown, the front stop then forms of the base frame 17, the front stop bracket 24.

It is also different from the position of the shown in FIG Base frame 17 possible that the stop bracket 24 is inclined obliquely downwards the bottom 9 of the inspection shaft 4 is seated.

The nozzle head 11 arranged on the front side of the hose 3 has obliquely rearwardly directed recoil bores 14. To avoid the Nozzle head 11 inadvertently by the guide bracket 20, 19, 18 when retracting the Hose 3 is pulled onto the hose reel 1, is slidable on the hose a stop sleeve 43 is arranged according to FIG. The stop sleeve 43 consists of spaced apart front and rear sleeves 44 and 45, the are connected to one another by a plurality of struts 46. The arrangement of the Sleeves and the struts 46 should only serve to the stop sleeve with such Outside diameter to be provided so that the nozzle head 11 does not penetrate the stop sleeve 43 can be pulled through and on the other hand the stop sleeve 43 not through the Leitbüel 20, 19, 18 can be pulled through.

When pulling the hose 3 backwards in the direction of arrow d0 so that the deposits 16 stored in the pipe are directed backwards in the direction of arrow 15 washed out in the direction of the base frame 17. So that the base frame 17 itself does not constitute a flow obstacle, it is preferred if the guide bars 20, 19, 18 themselves form the feet of the base frame 17, because these guide bars themselves the deposits 16 and the deposits offer only a low flow resistance 16 can be flushed out through the guide bars into the inspection shaft 4.

From Fig. 3 are further details of the storage of the scissor arm trailing arm arrangement shown.

Here, the right spreading arm 22 is shown, which is in its on the base frame 17 adjacent rest position is pivoted inward.

According to FIGS. 3 and 4, the spreading arms 21, 22 are at the pivot point 35 pivotally mounted on the front cross member 37. The cross member 37 is in turn connected at pivot point 33 to the first, front scissor arm 27, the front scissor arm 27 at the pivot point 29 with the rear scissor arm 28 is connected, which in turn can be pivoted at pivot point 30 on base frame 17 is stored.

The fact that spreading arms 21, 22 at a distance from their pivot points 35 are pivotally connected to trailing arms 31, 41, each trailing arm on the one hand in the pivot point 36 with the spreader arm 21, 22 or with the pivot point 32 with the Base frame 17 is pivotally connected, there is a straight guidance of the spreading arms 21, 22 in the pivoting direction (arrow direction 42). Likewise is due to the given Lever arm ratios given a power transmission.

At the free pivotable ends of the spreading arms 21, 22 are round Deflector bracket 25 arranged in order to avoid that when pulling out the entire device, when the spreading arms 21, 22 are pivoted back in their rest position, the free Ends of the spreading arms 21, 22 on ladder brackets possibly located in the inspection shaft 4 get caught.

At the front of the cross member 37, hanging loops 39 can also be arranged be an additional bracket for the entire base frame in the inspection shaft 4 to enable.

Likewise, the outwardly directed sides of the spreading arms 21, 22 and the front of the cross member 37 covered with Profi3gunnii 34. Through this damage to the muzzle 8 or the side walls of the inspection shaft 4 avoided.

The invention is not restricted to the exemplary embodiment described, because according to the technical teaching given here, it is only essential that a stop (cross member 37), which acts in the direction of arrow 40 from the front is, the swivel drive of expanding arms 21, 22 takes over. Instead of the scissor arm / trailing arm arrangement consequently, a piston-cylinder arrangement with or without auxiliary energy can also be used will.

Claims (10)

P -a t e n t a n s p r ü-c h e 1. Device for hose deflection a high-pressure hose for sewer cleaning, consisting of one in a base frame rotatably mounted pulley, over which the hose in the bend and partially on the Deflection roller lying next to a hose reel into the clear opening of the pipe to be cleaned is performed, the base frame at the pipe mouth of the pipe to be cleaned is detachably attached, that is to say n e t that automatically pivotable spreading arms (21, 22) are arranged on the base frame (17) which are frictionally attached to the pipe mouth (8) of the pipe (5) to be cleaned invest. 2. Apparatus according to claim 1, d a d u r c h g e k e n n z e i c That is, the pivoting of the spreading arms (21, 22) by means of a scissor arm / trailing arm arrangement (27, 28; 31, 41) takes place. 3. Apparatus according to claim 1, d a d u r c h g e k e n n z .e i c Not that the pivoting of the spreading arms (21, 22) is effected by a fluidically operated Piston-cylinder arrangement takes place. 4. Device according to claim 2, d a d u r c-h g e k e n n z e i c h n e t that the scissor arm trailing arm arrangement is formed in that an A scissor arm (27) attaches pivotably to a transverse traverse (37) and can pivot with it a second scissor arm (28) is connected, which in turn is pivotable on the base frame (17) is stored. 5. Apparatus according to claim 4, d a d u r c h g e k e n n z e i c It should be noted that the spreading arms (21, 22) can each pivot on one side on the cross member (37) are connected and at a distance from the center of gravity (35) on the crossbar (37) one trailing arm (31, 41) each pivotable on the spreader arm (21, 22) and on the other hand is pivotally attached to the base frame (17). 6. Device according to one of claims 3 to 5, d a d u r c h g e I do not know that. at the free, pivotable ends of the spreading arms (21, 22) deflector bars (25) are arranged. 7. Device according to one of claims 3 to 5, d a d u r c h g e it is not indicated that at least the outer sides of the spreading arms (21, 22) and the cross member (37) are covered with rubber profile (34). 8. Device according to one of claims 3 to 7, d a d u r c h g e it is not indicated that the base frame (17) is in the direction of the pipe mouth (8) has a stop bracket (24) which, when the spreading arms (21, 22) forms the foremost part of the device. 9. Device according to one of claims 3 to 8, d a d u r c h g e it is not indicated that the diameter of the guide bracket leading to the hose (3) (18, 19, 20) is smaller than the diameter of a slidable on the hose (3) held stop sleeve (43). 10. The device according to claim 9, d a d u r c h g e k e n n z e i c h n e t that the guide bars (18, 19, -20) form the standing surfaces of the base frame.