DE2006748C3 - Mobile sweeper with swiveling dirt box - Google Patents

Description

The invention relates to a mobile sweeper with drive units, suction fan, sweeping device and a dirt box, which is suspended via two swivel supports on two support arms directed away from the chassis and _{can be swiveled up via the sweeper:} a filter arrangement is provided between the suction fan and dirt box.

In such a known embodiment according to GB-PS 808 026, the filter arrangement is fixed on Arranged dirt box and is moved with the dirt box. This has the disadvantage that between Suction fan and filter assembly must be arranged a flexible connection due to their Stress caused by the movement of the filter assembly can become brittle. Furthermore takes place when pivoting of the dirt bin, the rubbish is swirled up, which is also increasingly affected by the Filter arrangement is reflected.

In addition, the dirt box can only be pivoted about transverse pins by means of a spindle drive, with the opening also remains directed towards the vehicle at the end of the pivoting and at least partially Remains over the wheels when the rubbish is circulated in the direction of the filter assembly. To the vehicle must be driven away from the accumulation formed before the garbage is thrown away. The garbage is then loaded in the conventional way by manual labor.

In the case of such a sweeper with a suction fan, it was because of the necessary connection the filter arrangement with the suction fan not possible, the dirt box over the vehicle to be lifted and emptied through an opening other than the connection opening to the rotary brush housing.

In the operating position of the dirt box he must be set in the known design by manually operated clamp locks.

From DT-AS 1 297 640 a street sweeper is known whose dirt box is in the operating position has a high connection opening through which the rubbish is transported via a special conveyor is fed. This dirt box, which is arranged on swivel supports, can be replaced by a with the swivel supports cooperating cylinder piston device are brought into a high position. Furthermore is between A special cylinder piston device is arranged for the swivel bracket and the dirt box, to pivot the dirt box and also to bring it into a position that one next to its connection opening designed as a wall attachment bunker shovel is brought into a forward position so that the dirt box can be used as a loading shovel. The connection opening is from one to the Vehicle facing position pivoted upwards. To empty the dirt box is on one other wall a hinged flap known, which is with a corresponding rotation of the The dirt box opens downwards. This known design does not have a suction fan.

IO

De 'invention is dft object rbessern one of a specified mobile sweeper with a ψ "rebläse and a filter assembly in such a way that emptying of the dirt box ^. ^v j _ner height above the vehicle body is possible? ^"s. · _eme stirring up the refuse is to be avoided in Schmuizkaweitgehend and ^e of Keh- *!" iefden emptied next to the sweeper standing Beirher or ^ in another vehicle from above j _ne j _nen can.

According to the invention, this object is achieved by arranging the dirt box so that it can be separated from the filter arrangement, which is permanently connected to the vehicle superstructure, and above the filter arrangement from below. ach up can be swiveled, the swivel ⁵ Ta he has swivel bearings at both ends, which are assigned to "Sander in such a way that when separating

In addition to the dirt box from the filter arrangement, a downward pivoting movement follows

j _o | _{gt un a that a rod arrangement is to} be provided which fixes the dirt box in the respectively desired position. This allows a permanent connection

between the suction fan and the filter arrangement that are not affected by movements of the dirt box is affected. In addition, the intended Pivoting movement achieved that the connec tion opening can remain in place, the linkage arrangement by their fixation also aromatic a sealing system of the connection opening

causes.

For this purpose, the Swivel bracket with the dirt box in the lower position essentially vertically downwards directed and bent so that the pivot bearing provided at their pivotable ends on which the dirt box is mounted, from the vertical projection of an upper pivot bearing which the other ends of the pivot brackets are connected to the support arms, to the vehicle body is offset. The dispensing opening always remains in a plane behind the vehicle.

According to an expedient embodiment, the upper edge of the dirt box rises obliquely from the vehicle directed away upwards and conforms to the lower edge of the downwardly open housing part of the Filter arrangement executed, the parts of the connection opening to the rotary brush housing when lifting of the dirt box can be pulled off laterally and downwards and pivoted upwards at an angle when lifting will. This means that no dirt emerges from the connection opening.

The cylinder piston device provided for pivoting the dirt box is advantageous the piston rod is connected to one end of a tension member which is connected to the pivot brackets via a Cam is connected in the pivot bearing, and that the piston rod is in the extended position having a head piece engaging with an abutment on the pivot bearing, through which compressive forces are applicable. As a result, the connection opening can be pressed to form a tight fit because the connection opening - irrespective of whether the dirt box is located at the front or at the rear of the vehicle is - each directed towards the vehicle parts where the rotary brush housing is arranged.

The linkage arrangement is expediently designed as an articulated linkage, which the dirt box at Shift from the lower to the upper position in the essential to keep it in an upright position. It is preferred that the linkage arrangement has three levers, which are connected to one another by a common joint and of which a first lever with its other end at a distance from the pivot bearing of the pivot bracket on the chassis, a second Lever in the lower area of the rear edge of the dirt box and a third lever with its other End is articulated on the pivot bracket, the third lever when pivoting the Dirt box guides the common hinge into a position in which the first and second levers are substantially are in a mutually stretched position. With this design, the upper edge of the dirt box when guided during lifting in the highest position of the dirt box above the filter arrangement be arranged essentially horizontally. The invention is described below on the basis of an exemplary embodiment described, which is shown in the drawing. In the drawing shows

Fig.! a schematic side view of a sweeper,

Fig. 2 is a side view of the machine according to Fig. 1, the dirt box in its lower position and dashed lines in its upper emptying position is shown

F i g. 3 is a partial view of the dirt box and its suspension from the rear, and FIG. 4 is a side view of FIG. 3. The vacuum sweeper according to FIG. 1 has a vehicle body 1, on the front part of which a driver's seat 2 is arranged, in front of which there is a desk 3 with the steering. \ m the front end there is provided a steering and drive wheel. 4 At the rear of the vehicle, two wheels 5 are arranged on the sides. In front of this, inside the vehicle body, the roller brush housing 6 is arranged with the transversely extending roller brush 7 driven in the direction of the arrow, which can be mounted in lateral arms supported on pilot wheels 8. The main brush housing 6 ends with a channel 10 at a connection opening 11 to the dirt box 12. Wall parts 13, 14, 15, which are arranged as an extension of the channel 10, can protrude into the connection opening provided on the dirt box.

In the front part is next to the steering and Drive wheel 4 on a carrier! 6 a side brush 17.

On the chassis frame are sloping downwards upwardly directed support arms 18 are arranged. One of these support arms is provided on each side, and on these support arms are mounted pivot bracket 19, the are articulated at their other end in pivot bearings 20 with the dirt box 12, rerner is a linkage arrangement is provided, which consists of a first Lever 21, a second lever 22 and a third lever 23 consists. All three levers are with one End connected by a common joint 24. The first lever 21, which is located when in Betnebsstellung Dirt box is directed essentially perpendicular, is at its other end through the hinge 25 hinged to the chassis frame or to the support arm 18. The second lever 22 is with its free end through the joint 26 on the lower part of the hmutzkastcns 12 hinged near the rear wall. The third lever 23 is at its other end through the Joint 27 attached to the pivot bracket 19 This The arrangement is the same on both sides. Malisch indicated pivot bearing 28 of the ScnwenK

Carriers 19 are connected to a drive which is shown in FIG. 2 is designed as a cable or chain hoist 34. which is wound on a drum of the joint so that when pulling the cable 34 the swivel arms 19 are moved away from the chassis.

This is particularly clear from FIG. 4 can be seen. The pivot bearing 28 has a circular cam disk 59 around which a chain is moved as a tension member 60 which is connected to a head piece 61 of a piston rod 62, the piston of which can be moved back and forth in an actuating cylinder 63. This embodiment has the advantage that, in the extended position, the head piece 61 comes into engagement with an abutment on the disk-shaped pivot bearing 28 and can press it into its lower position. This is essential because in this context the cylinder-piston device not only applies tensile forces, but also compressive forces during operation to secure the pivoted-in position. It will be understood that the cylinder 63 in FIG. 4 with the cylinder 29 in FIG. 1 matches. The cylinder can be operated hydraulically or pneumatically. It is important that the piston rod 30 (FIG. 1) or 62 (FIG. 4) has a head piece which can come into engagement with an abutment of the swivel joint in order to move the swivel bracket in the ₂ s in FIG. 1 to lock the position shown, in which the connection opening of the dirt box 12 with the channel 10 is in overlapping contact and overlap. Other locking means, such as mechanical locks or the like, can also be provided, which are arranged on the side walls of the dirt box between the latter and the chassis frame.

It can also be seen that the dirt box 12 has an edge line which rises obliquely backwards and upwards which begins above the connection opening 11. Of the Housing part located above the dirt box 12 between the pivot supports 19 and the support arms 18 accommodates the filter arrangement 31. The fan can also be arranged permanently in the vehicle body be. The housing part with the filters is open at the bottom and the dirt box at the top, so that these Parts in the area of the edges 32 are connected to one another. It should be noted that the ends the pivot bracket 19 with the pivot bearing provided at 20 are bent so that the pivot bearing 20 in the operating position shown from the vertical projection of the pivot bearing 28 to the vehicle body 1 are offset. It is achieved that the dirt box 12 when moving upwards initially bent slightly to the side and downward in the area of the edges 32 and pulled off laterally to the rear so that overlapping interventions can be provided here. That is considered important to to achieve a dust-tight assembly with simple means.

In the other figures, the same parts are identical Reference numerals denoted. The dirt box 12 is initially in the lower position behind a Chassis frame part 33 shown. It is noted that 6ο the rear wall 35 is designed as a flap. The flap has flat extension pieces at the top on both of its side edges 64, in which pivot pins 72, 73 are arranged in the side walls of the dirt box 12 are stored. These pivot pins 72, 73 are thus at a distance from the upper edge 40 of the dirt box and the rear wall part formed by the flap 35 is arranged. Through this linkage a particularly favorable leverage effect is achieved in order to move the flap under its own weight into the most favorable Position to move.

It is also noted that latching hooks 37 are provided on the lower part of the rear wall 35, which is designed as a flap which engage in the closed position via pins, advantageously one provided at 26 Joint for the second lever 22. When pivoting the pivot bracket 19 according to FIG. 2 in Clockwise causes the linkage arrangement with the levers 21 to 23 that the dirt box in the 12 'position shown moves. The bottom surface 38 is then directed obliquely backwards and downwards. After an opening of the locking hook 37, for example by a Bowden cable (not shown in detail) or one on the hook arranged handle, the rear wall 35, designed as a flap, is raised around the bearing pin 36 from Dirt box 12 from so that the dirt is ejected. It can be seen that the upper edge 40 in the upper position at 40 'is arranged substantially horizontally.

It can also be seen that the rear wall 35, designed as a flap, is attached to the attachment pieces in the upper part 64 the outwardly directed bearing journals 36 at a distance from the plane formed by the flap Rear wall 35 and in the vicinity of the upper edge 41 of the extension pieces 64 outwardly directed pegs 36 has (Fig. 3). For these pins, recesses are provided in the side walls 65, 66 of the dirt box, of those in Figs. 2 and 4 which are located on one side with 67 are designated. The recess 67 is. as particularly from FIG. 4 shows, with respect to the rear wall formed by the closed flap 35 directed obliquely upwards forwards, and it receives the pin 36 when the flap is closed is

Because the pins 36 enter the recesses 67, it is achieved that the flap is designed Rear wall 35 in the lower position of the dirt box 12 to this with a certain Applying torque that is sufficient to cause the ramp surface 42 of the hooks 37 on the pin at 26 to be upward move so that it engages automatically

Furthermore, essentially Z-shaped locking arms 56, 57 are arranged on the pivot supports 19, 58 These have levers 68, 69 only on their upper part. These levers are, as shown in FIG. 4 shows directed so that they the pin 36 in the recess 67 under pressure on the bottom of the recess lock. When the dirt box is pivoted, the initial movement of the pivot bracket 19, 58 of the lever 68, 69 already rotated so that the upper opening of the recess 67 is released so that the pin 36 can emerge from the recess during the further movement. In reverse The dirt box becomes meaningful when it is swiveled in due to the action of the levers 68, 69 on the pins 36 forcibly locked in the recesses 67 under pressure.

It is also found that the third lever 23 is bent is to avoid that he during the pivoting movement on the pivot bearing 20 of the Support arm 19 must go. In addition, the third lever 23 is dimensioned so that the first and second lever 21. 22 are essentially stretched in the upper position of the dirt box. As will be shown, that is first lever 21 laterally bent or cranked in order to be able to pass the pivot bearing 28.

From Fig. 4 shows that along the two levers 21, 22, which of course always have the same length in common, the Bowden cable 70 is guided, which is on a pivot pin arranged at 26 is connected to an eccentric 7t which is located under the hook 37 can grab. An actuation of the eccentric therefore leads to the hook 37 being lifted out of engagement with the pin at 26 to allow for arbitrary locking.

2 shows that the dirt box 12 can be raised far above the vehicle and that the dirt after opening the designed as a flap Rear wall 35 can slide down.

The F i g. 3 and 4 show that the pivot bracket 19 and the linkage arrangement from the levers 21, 22, 23 are provided on both sides. At the in F i g. 3 on the left are the swivel bracket with 58 and the levers labeled 43, 44, 45. The pivot joint 28 is a corresponding pivot joint 46 on the other Page assigned. Furthermore, the support arms 18, 47 recognizable.

The pivot arms 19, 58 are rotationally fixed on sockets 48 arranged, on which an actuating disc 50, 51 is provided, on the one hand the cable, a chain attack as a tension member 60 and / or the locking arrangement in the form of the cylinder piston device.

It is clear from FIG. 4 to see that the flap designed as a rear wall 35 on the lower part a sealing arrangement 52, which is held on the bottom 38, is pressed on. Furthermore, FIG. 4 clearly the ramp surface 42 of the hook 37, which is held in a support bearing 53 on the outside of the side wall and engages pin 26. The hook is in the area of its pivot pin 54 in bezuj formed into a contact surface 55 so that it nich can move to a lower position than that shown.

For this purpose 4 sheets of drawings

Claims (1)

Patent claims: 1. Mobile sweeper with drive units, suction fan, sweeping device and a dirt box, which is suspended via two swivel supports on two support arms directed away from the chassis structure and can be swiveled up over the sweeper, a filter arrangement being provided between the suction fan and dirt box, characterized in that the dirt box ( 12) is arranged separable from the filter arrangement (31), which is firmly connected to the vehicle body, and can be swiveled upwards from below the filler arrangement, the swivel supports (19, 58) having swivel bearings (20, 28) at both ends which are mutually in the Kind are assigned that when separating the Schmuizka least (12) from the filter assembly (31) first a downward pivoting movement takes place and that a rod assembly fixing the dirt box (12) in the desired position is provided. 2. Sweeping machine according to claim 1, characterized in that the pivoting support (19, 58) at in lower position located dirt box directed essentially vertically downwards and so are curved that the pivot bearing (20) provided at their pivotable ends, on which the dirt box (12) is mounted, from the vertical projection of an upper pivot bearing (28), on which the other ends of the pivot bracket (19, 58) with the support arms (18, 47) are connected, is offset towards the vehicle body. 3. Sweeping machine according to claim 1 or 2, characterized in that the upper sand (32, 40) of the dirt box (12) directed obliquely away from the vehicle rises upwards and conforms to the lower Edge of the downwardly open housing part of the filter assembly (31) is executed and that the Parts of the connection opening to the main brush housing (6) when lifting the dirt box (12) can be pulled off laterally and downwards and pivoted upwards at an angle when lifting. 4. Sweeper according to one of claims 1 to 3, in which a cylinder-piston device with a piston rod for pivoting the dirt cat is provided, characterized in that the piston rod (62) with one end of a Tension member (60) is connected, which is connected to the pivot supports (19, 58) via a cam (59) is connected in the pivot bearing (28), and that the piston length is in the extended position in an abutment on the pivot bearing (28) engaged Coming head piece (61), through which compressive forces can be applied. 5. Sweeper according to one of claims 1 to 4, characterized in that the linkage arrangement has three levers (21 to 23; 43 to 45), which are connected to one another by a common joint (24) and of which a first Lever (21, 43) with its other end at a distance from the pivot bearing (28) of the pivot bracket (19, 58) on the chassis, a second lever (22, 44) in the lower area of the rear edge of the Dirt box (12) and a third lever (23, 45) with its other end on the pivot bracket (19, 58) is articulated, the third lifting when swiveling up the dirt box the ge common joint (24) leads into a position in which the first and second levers are substantially in one are stretched to each other.