DE29900840U1 - Vehicle for emptying shaft buckets - Google Patents

Description

ASSM-IVgDE

30 December 1998

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DESCRIPTION

Vehicle for emptying shaft buckets TECHNICAL AREA

The invention relates to a vehicle that is equipped with a collecting container into which a manhole bucket taken from street drains or other surface water canal inlets can be emptied. Manhole buckets are located in street drains, for example. Over time, these become clogged with dirt that is carried along when water flows away. From time to time, manhole buckets must therefore be pulled out of the manholes and emptied.

STATE OF THE ART

A known vehicle for emptying shaft buckets of the type mentioned above has a rubble hopper mounted on a crane boom so that it can be tilted. The crane boom itself is designed to be pivotable and telescopic. This means that shaft buckets can be removed from their shafts from a relatively large area around the vehicle using this crane attached to the vehicle and brought to the area of the collecting container on the vehicle and emptied there. In addition, the crane is designed to be movable across the collecting container. The shaft bucket is tipped out using the rubble hopper, which is mounted on the telescopic arm of the crane so that it can be tilted accordingly. The shaft bucket to be emptied is pulled by a cable winch with its edge against the rubble hopper using a rope that is passed through the funnel. By pulling the rope further, the shaft bucket is pulled together

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with the rubble hopper tipped into its emptying position so that the dirt in the shaft bucket can be emptied from above into the vehicle's collection container. This type of vehicle has proven itself. However, when the shaft bucket is emptied, dirt collects in the area between the edge of the shaft bucket and the inner wall of the rubble hopper. When the emptied shaft bucket is swung back, this dirt falls back onto the container or onto the road or other surface in a more or less uncontrolled manner.

DESCRIPTION OF THE INVENTION

The invention is based on the object of specifying an improved vehicle of the type mentioned at the beginning for emptying shaft buckets.

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This invention is defined by the features of the main claim. Further developments of the invention are the subject of subclaims.

According to the invention, the shaft bucket no longer rests completely against the rubble hopper with its free edge. This ensures that no dirt can collect between the free edge and the inner wall of the rubble hopper when the shaft bucket is emptied. The contact-free area of the edge of the shaft bucket with the rubble hopper is therefore present in particular in the fall area of the dirt falling out of the shaft bucket.

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The contact-free area between the shaft bucket and the rubble hopper can advantageously be designed in such a way that the

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designed console, against which the shaft bucket to be emptied rests with its free edge in its emptying position, has a recess such that the contents of the shaft bucket in the emptying position can freely fall or slide out past the console.

According to an essential feature of the invention, the cable winch, with which the shaft bucket can be pulled into the rubble hopper and the shaft bucket and rubble hopper can be tipped together into the emptying position of the shaft bucket, is attached to the extendable part of the telescopic boom of the crane. This has the advantage that when the telescopic boom is pulled in and out, the distance between the cable winch and the end of the cable to which the shaft bucket is attached does not change in length. When the telescopic boom is pulled in and out and also when the crane boom is raised and lowered and when the crane boom is swiveled, the position of the shaft bucket does not change relative to the rubble hopper when the cable winch is stationary. If the cable winch is not attached to the extendable part of the telescopic boom, the cable winch would have to be controlled accordingly in order to ensure, for example, that the shaft bucket is constantly attached to the rubble hopper when the telescopic boom is moved. This would be possible, but would require a considerable amount of control effort if the control were automatic. This effort would be eliminated with manual control. However, manual control would lead to practically unacceptable results.

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To ensure that even stuck dirt can fall out of the shaft bucket, a

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30 December 1998

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A suitably firm stop plate must be placed on the rubble hopper, which presses against the holder when the rubble hopper is in the emptying position. The stop plate is dimensioned so that the rubble hopper with the shaft bucket in it can be pushed firmly against the suitably stable holder of the rubble hopper. If the dirt does not fall out of the shaft bucket when pushed the first time, a certain amount of force can be achieved by repeatedly pushing the rubble hopper against the holder of the rubble hopper.

10 shaking process can be effected.

The return movement of the rubble hopper with attached shaft bucket from the emptying position can be effected by means of a return device. This return device can be designed on the fork carrying the tilting shaft of the rubble hopper of a corresponding bracket attached to the telescopic boom. The return device is advantageously provided in such a way that its return force acts in the opposite direction to the pulling force exerted by the cable winch on the shaft bucket via the cable. The shaft bucket must therefore be lifted against the rubble hopper against the rubble hopper against the return force. When the cable is released, the return force pushes the rubble hopper and thus also the shaft bucket back from the emptying position. The shaft bucket is then back in its hanging position so that it can be retracted into its shaft from above by moving the telescopic boom accordingly.

The return device for moving the rubble hopper back can be operated by means of a hydraulic cylinder or a coil spring.

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In the embodiment shown in the drawing, the swivel range of the telescopic boom is designed to be approximately 300° (degrees).

The tilting range of the telescopic boom, i.e. the ability to swing it up and down, is sufficiently dimensioned if the rubble hopper can be raised by around 1.20 m (meters) when the telescopic boom is retracted and by around 1.60 m when the telescopic boom is extended.

In order to move the telescopic boom transversely, the container in the embodiment shown in the drawing has two rails on which the crane bearing can be moved transversely across the container. The movement is carried out by a motor using a rack along the rails with which a drive pinion is in meshing engagement. This motor is preferably a hydraulic motor.

The swivel and lifting movements of the telescopic boom are carried out by means of corresponding pressure medium circuits. Hydraulic oil is preferably used as the pressure medium.

In the case of liquid dirt components in particular, the risk of the vehicle becoming contaminated by dripping sump buckets is very high. In order to prevent the collection container and the parts and other units on the outside from becoming contaminated by dripping and falling dirt, the invention provides for a drip guard above the collection container in the area between its filling opening and its outer side wall. This drip guard can be implemented economically, simply but effectively, using a suitable drip plate.

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Further advantageous embodiments of the invention result from the features listed in the claims and from the following exemplary embodiment.

SHORT DESCRIPTION OF THE DRAWING

The invention is described in more detail below with reference to the embodiment shown in the drawing and

explained. They show:
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Fig. 1 is a side view of a vehicle according to the

Invention with retracted telescopic boom and attached shaft bucket, as well as the emptying position of this shaft bucket shown in dash-dotted lines, 15

Fig. 2 a top view of the vehicle according to Fig. 1 with different positions of the telescopic boom and the entire telescopic crane,

Fig. 3 a perspective view of the rubble hopper attached to the telescopic boom ready to accommodate a shaft bucket and

Fig. 4 an inside view into the rubble hopper. 25

WAYS TO CARRY OUT THE INVENTION

A vehicle 10 carries a collecting container 14 on its chassis 12. 0 shaft buckets 16, which are present in waste water drains from streets or other surface areas, can be emptied into the collecting container 14. When emptying, the dirt, which is present in a more or less liquid or solid consistency, is poured out of the shaft bucket 16. For this purpose,

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the shaft bucket 16 is brought into its emptying position, tilted by about 10 degrees, above a filling opening 20 in the collecting container (Fig. 3). This emptying position is indicated in Fig. 1 with the dash-dotted reference number 16.1.

The shaft bucket 16 is handled by means of a crane 22 attached to the collecting container 14. The crane 22 is mounted with its crane base 24 so that it can pivot about a pivot axis 26. The pivot axis 26 is perpendicular to the contact surface 28 of the vehicle 10. The pivoting movement (Fig. 2) covers, starting from the position of the telescopic boom 32 of the crane 22 shown in solid lines in Fig. 2, a range extending clockwise of approximately 300 degrees.

The carriage 34, on which the crane base 24 is pivotably mounted, can be moved back and forth in the transverse direction 3 6 above the collecting container 14. To do this, the carriage 34 travels on two longitudinal guides 38 which are mounted above the collecting container 14. The transverse offset of the crane base 24 and thus of the crane 22 is achieved via a pinion-rack connection 40. The rack of this connection 40 is present along the guides 38. The pinion of this connection 40 is driven by a hydraulic motor which is attached to the carriage 34. Due to the movement in the transverse direction 3 6 and the pivoting movement 3, an equally large area on the right and left sides of the vehicle 10 as well as an area behind the rear of the vehicle 10 can be covered by the crane 22.

In addition to its swivel movement 3 0, the telescopic boom 32 can be telescoped, i.e. extended and retracted. The telescopic movement 46 is controlled by a 35

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Double arrow in Fig. 1. In addition, the telescopic boom 32 can be tilted up to different heights from its horizontal position around a tilting axis 48 arranged in its rear area. The corresponding tilting movement 50 is shown by a double arrow. In the present case, this tilting movement 50 is such that when the telescopic boom 32 is retracted, which is shown in Fig. 1, the height of its shaft bucket 16 at the front end can be adjusted by 1.20 m and when it is extended, by 1.60 m. This height adjustment has proven to be sufficient in practice for the optimal use and operation of the vehicle 10. The tilting movement 50 takes place by means of lateral hydraulic cylinders 52.

A hydraulic cylinder 54 is also provided for the telescoping movement 46.

A cable winch 62 is attached to the right end of the telescopic part 60 of the telescopic boom 32 in Fig. 1. This cable winch 62 is therefore extended when the telescopic part 60 is extended.

At the front end of the telescopic part 60 there is a fork 64, which has bearing points 68 for a tilting shaft 70 on both of its fork parts 66. The tilting shaft 70 is firmly connected to a rubble hopper 72. By rotating the tilting shaft 70, the rubble hopper 72 tilts accordingly about the tilting axis 73.

0 The rubble hopper 72 has a conical, upwardly tapering, top-open cone 74 (Fig. 3). At its lower end, a centering ring 76 is integrally attached to the cone 74. This centering ring 76 widens the cone 74 outwards. In the transition

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30 December 1998

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An inwardly projecting bracket 78 is formed in the area between the centering ring 76 and the pouring cone 74. In an inner circumferential area 80, which is adjacent to the tilting axis 73 (Fig. 1), the bracket 78 is not present.

On the outside of the rubble hopper 72, side cheeks 82 are attached, which carry a deflection roller 84 between them. This deflection roller 84 is positioned centrally above the pouring cone 74.

A stop plate 86 is attached to one of the two cheeks 82 in a cantilevered manner on the outside. This stop plate 86 limits the tilting movement of the rubble hopper 72 about the tilting axis 73 by striking the left fork piece 64.2 in Fig. 3 in the maximum tilted position of the rubble hopper 72. In the position 16.1 of the shaft bucket 16 shown in Fig. 1, this stop plate 86 rests on the fork piece 64.2 (Fig. 3). The stop plate 86 could also be arranged in the area between the two side cheeks 0 82.

The tipping of the rubble hopper 72 from the position shown in Fig. 3 is carried out in the following way. A shaft bucket 16 to be emptied is attached to the rope 88 that is guided around the deflection roller 84 and through the rubble hopper 72 at the bottom, to the rope hook 90. By pulling on the rope 88 wound on the cable winch 62, the hook 90 with the attached shaft bucket 16 moves upwards until the free edge of the shaft bucket 16 rests on the bracket 78. The shaft bucket 16 is pressed against the bracket 78 by the rope 88. When the rope 88 is pulled further, the shaft bucket 16 is tilted together with the rubble hopper 72 around the tilting axis 73 until the rubble hopper 72 rests with its stop plate 86 on the fork piece.

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64.2. The rubble hopper 72 and thus also the shaft bucket 16 pressing against it have reached the emptying position, which is indicated in Fig. 1 with the reference number 16.1 for the shaft bucket 16.

In this emptying position, the dirt in the shaft bucket slips out and can fall through the filling opening 20 into the collecting container 14. For this purpose, the telescopic boom 32 is positioned accordingly above the collecting container 14.

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When the tension of the cable 88 is released, i.e. when the cable 88 is extended, the rubble hopper 72 with the adjacent shaft bucket 16 is tilted back into the position shown in Fig. 3. This tilting back is carried out by the restoring force of a hydraulic cylinder, which is held on the one hand by the fork 64 and on the other hand by its piston rod 93 in an elongated hole 95. The elongated hole 95 is recessed in a cantilever part 89 projecting from the fork part 66. The slight back and forth pivoting movement of the rubble hopper 72 that occurs when the hopper 72 is shaken does not result in any load on the piston rod 93 of the cylinder 91.

In the present case, the rubble hopper 72 has an oval internal cross-sectional contour 92 . However, it is also possible to form a circular contour for the rubble hopper 72 instead of the oval. It is only important that the contact area formed by the bracket 7 8 between the shaft bucket edge and the rubble hopper 72 is interrupted in order to ensure that when the dirt in the shaft bucket 16 slips out or falls out, no dirt can get caught in the area of the bracket 78. The edge of the shaft bucket 16 therefore has a

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no contact with the debris hopper 72.

To empty a shaft bucket 16, it is pulled out of a street inlet with the crane 22 by hanging it on the hook 90 and driving the cable winch 62 accordingly. To do this, the crane 22 is positioned above the street inlet. The telescopic boom 32 of the crane 22 then swings into the position shown in solid lines in Fig. 2. The crane 22 is then moved into the position shown in dotted lines 22.1 (Fig. 2) by moving the carriage 3 4 transversely. The telescopic boom 32 is then retracted, if it has not already been done. When retracted, the position of the shaft bucket 16 relative to the rubble hopper 72 does not change, since the length of the cable between the hook 90 and the cable winch does not change. By further pulling in the rope, the rubble funnel 72 is then tilted together with the adjacent shaft bucket 16 into the position of the shaft bucket 16.1 shown in Fig. 1. In this emptying position, the dirt from the shaft bucket 16 can fall through the filling opening 20 into the collecting container 14. The filling opening 20 is surrounded by an elastically flexible edge border 94.

In order to prevent dirt from the shaft bucket 16 from dripping or falling onto the vehicle 10 and in particular onto the collecting container 14 when the crane 22 is moved from its position shown in solid lines in Fig. 2 to its unloading position 22.1 shown in dash-dotted lines, thereby undesirably contaminating the collecting container, a drip plate 96 is provided between the edge 94 of the filling opening 20 and the upper outside 14.2 of the collecting container 14 in Fig. 2, which covers the top of the collecting container 14. When transporting

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By positioning the shaft bucket 16 and tipping it over into its emptying position 16.1, dirt cannot fall onto the collecting container 14 but only onto the drip tray 9 6.

At the rear of the vehicle 10 there is a tub 97 that projects backwards, into which the contents of the shaft buckets can also be emptied. This tub 97 is attached to the side of the vehicle in an articulated manner using lever arms 98. An articulated lever 99 is articulated at the free end of each lever arm 98. By pivoting the lever arms 98, which can be achieved using hydraulic cylinders 100 on the side of the collecting container 14, the tub 97 is pivoted upwards until its upper longitudinal edge region 101 facing the vehicle 10 hits a fork stop 102. When the lever arms 98 are pivoted further, the tub 97 tips over about its longitudinal edge region 101 so that it can empty its contents into an opening in the collecting container 14 below it.

Claims (1)

ASSM-17gDE *· '..'. . J II · *..·*··; 30 December 1998 »!. ..* *··* ··· ··* ·· -1-CLAIMS 01) Vehicle (10) with collecting container (14) for emptying shaft buckets (16) taken from street drains or other surface sewer inlets into the collecting container (14), - with a rubble hopper (72) tiltably mounted on a crane boom (32), - with a pivoting and telescopic crane boom (32) which is arranged above the collecting container (14) so that the rubble hopper (72) can be positioned above a filling opening (20) of the collecting container (14), - with a cable winch (62), the cable (88) of which is designed to suspend the shaft bucket (16) and which (88) is guided through the rubble hopper (72) in such a way that a shaft bucket (16) pulled up against the inner surface of the rubble hopper (72) can be tilted into its emptying position (16.1) together with the rubble hopper (72) by further pulling on the cable (88), characterized in that - the rubble funnel (72) is provided in such a way that when the shaft bucket (16) is pressed against the rubble funnel (72), at least a partial area of the free edge of the shaft bucket (16) has no contact with the rubble funnel (72, 78). 02) Vehicle according to claim 1, characterized in that - on the inside of the rubble hopper (72) a bracket (78) is formed against which a shaft bucket (16) pulled up into the rubble hopper (72) as far as possible can be pressed with its free edge, - the bracket (78) has at least one recess (area 80) such that the contents of the bucket in its emptying position ASSM-17gDE 30 December 1998 -2 — (16.1) can freely fall or slide out past the bracket (78). 03) Vehicle according to one of the preceding claims, characterized in that - the cable winch (62) is attached to the extendable part (60) of the telescopic boom (32). 04) Vehicle according to one of the preceding claims, characterized in that - a stop plate (86) is provided on the rubble hopper (72) which rests against the holder (64.2) of the hopper (72) when the rubble hopper (72) is in the emptying position. 05) Vehicle according to claim 4, characterized in that - the bracket has a fork (64), - the fork parts (66) are designed as bearing points (68) of the tilting shaft (70) carrying the rubble hopper (72), - a return device (91, 93) is provided on the fork (64), the return force of which acts on the rubble hopper (72) in a direction opposite to the pulling force of the cable winch (62). 30 06) Vehicle according to claim 5, characterized in that - the return device contains a hydraulic cylinder (91) or a coil spring. 35 ASSM-17gDE 30 December 1998 » · -3 — 07) Vehicle according to one of the preceding claims, characterized in that - the telescopic boom (32) can be pivoted about an axis (26) perpendicular to the contact surface (28) of the vehicle and tilted about an axis parallel to this contact surface (48). 08) Vehicle according to claim 7, characterized in that - the swivel range (30) of the telescopic boom (32) is approximately 300° (degrees). 09) Vehicle according to claim 7, - the tipping range (50) of the telescopic boom (32) is such that the rubble hopper (72) can be raised by approximately 1.20 m (meters) in height when the telescopic boom is retracted and by approximately 1.60 m in height when the telescopic boom is extended. 20 10) Vehicle according to one of the preceding claims, characterized in that - there are two travel rails (38) on the collecting container (14), on which the crane bearing (24) of the telescopic boom (32) can be moved transversely (36) over the collecting container (14). 11) Vehicle according to claim 10, characterized in that - there is a rack along the rails, - a drive pinion is in meshing engagement with the rack (40), - the drive pinion can be driven by a motor (42) attached to the crane bearing. 35 ASSM-17gDE 30 December 1998 • * m · • · φ · -4- 12) Vehicle according to one of the preceding claims, characterized in that - pressure medium circuits for effecting the pivoting and lifting movements (3 0, 50) of the telescopic boom (32) are present. 10 15 20 13) Vehicle according to claim 12, characterized in that - the pressure medium contains hydraulic oil. that 25 14) Vehicle according to claim 11, characterized in that - a hydraulic motor (40) is provided for moving the crane bearing (24). 15) Vehicle according to one of the preceding claims, characterized in that - a drip guard (96) is provided above the collecting container (14) at least in the area between its filling opening (20) and its outer side wall (14.2) in such a way that when a shaft bucket (16) is swiveled in and tipped into its emptying position (16.1) above the filling opening, no dirt falling or dripping from the shaft bucket (16) can fall onto the outside of the collecting container (14). 30 16) Vehicle according to claim 15, characterized in that - a drip plate (96) is provided on the collection container (14) as drip protection. that 35