Road milling machine with steering device

The present invention relates to a road milling machine with a Platform, which has a base plate, and a chassis on the Construction mounted steering means comprising a console on which a Steering wheel is arranged.

There are known road milling machines, to their chassis a platform is provided. The operator's platform can accommodate the driver by a Bottom plate is provided, on which the driver stands. For the most part come driving cabs for use, in addition to the base plate a Seat for the driver is provided, so that these in may set a longer processing the main traffic area.

The steering device of the known road milling machines includes Generally, a console on which the steering wheel is arranged. The console is thereby facing on a cabin floor, closed side of running Chassis arranged. The steering itself is usually done via a hydraulic.

When processing a traffic area with a road milling machine, it is often required that the vehicle driver the traffic area to be machined keeps a close eye on. So the road milling machine has, for example, often followed by a layer applied to the road surface marking, so that the Drivers always the exact journey of the road milling machine along the must monitor mark. Even when processing a traffic surface has along an edge stone or a manhole cover around the Driver always predetermined by the above obstacles limit the monitor to be processed traffic area.

The known road milling machines have the disadvantage that monitoring or observation of the processed traffic area from operator platform is difficult.

From US 3,895,843 a road milling machine is known whose milling tool is arranged in the direction of travel in front of the driver's cab. The milling tool is of the platform through a recess in the base plate partially visible. A disadvantage is that the view of the console with the tools and the up is hampered by the bottom plate upwardly extending steering column. About that addition, the driver's legroom is hindered.

The present invention is thus based on the object, a to provide road milling machine, a simple and convenient observation of the processed traffic area enables the operator's platform.

The solution this task is carried out according to the invention having the characteristics of Patent claim 1. Advantageous embodiments of the invention Road milling machine are the subject of the dependent claims.

The road milling machine according to the invention comprises a platform which with a base plate is provided. On this bottom board, the driver standing or sitting, provided an appropriate seat on the Bottom plate is mounted. On the chassis of the road milling machine is a Steering device attached to the steering, for example, a wheel, the wheels an axle or chain drives is used, on which a road milling machine is usually supported. The steering device includes a console and a arranged thereon steering wheel. Under a steering wheel is in this connection any manually operable steering means to understand. According to the invention the Console fastened laterally to one end of the chassis. The term refers side here to the direction of travel. extends from the fixed end the console above the base plate to form an opening between the base plate and the console to the side. above, the term is to be understood here is that the console located higher than the bottom plate is. An immediate arrangement of the console to the base plate is not required . The other end of the bracket forms a free end.

By remaining below the console port, the driver has the Opportunity to observe the traffic area to be machined without the Page disclaim need to, as the conventional road milling machines Case in which the side of the chassis blocks the view, in which the console is arranged. In addition, causes the one-sided mounting of the console, that a free end of the console is formed, which is not down over the Chassis must be supported so that no obstructing the view Support means to this end is necessary. Moreover, ensuring the Opening beneath the console to the driver greater legroom. The recess of the bottom plate through which the driver recognizes the road surface, may be either only over a part or the entire length of the bottom plate extend.

The console of the road milling machine according to the invention need not be at the can be arranged outermost side wall of the chassis side, but and internally displaced in the direction of travel behind a portion of the chassis be arranged. In a particularly advantageous embodiment of the Road milling machine is the console offset inwardly, said chassis in Driving direction is omitted in the opening such that the road surface is visible. So on the one hand a small overall width of the road milling machine achievable because the console does not protrude beyond the outermost side wall of the chassis, while on the other hand, the traffic surface to be machined is still visible is.

In a further particularly advantageous embodiment of the Road milling machine according to the invention, the steering wheel about the longitudinal axis the console can be pivoted. Thus, the position of the steering wheel because be adjusted if the driver the road milling machine or standing sitting operated.

In a further advantageous embodiment of the invention Road milling machine, the steering wheel can be pivoted together with the console. Preferably, at the console more operating and / or arranged display elements, obtain their relative arrangement to the steering wheel remains, so that the operation is simplified.

To safe steering in different pivot positions of to ensure the steering wheel, the steering wheel can in another preferred Embodiment can be locked in different pivot positions. A Such locking can be a stepwise or continuous adjustment of the Pivot position allow.

To ensure easy mounting of the road milling machine according to the invention and to allow easy interchangeability of the steering device, the Road milling machine in an advantageous embodiment, designed such that the bracket is releasably secured to the chassis.

A particularly simple assembly and disassembly of the steering device to enable the console, in a further advantageous embodiment, plugged in the direction of its longitudinal axis on the chassis and by a Rotational movement of the console are mounted about its longitudinal axis. Among Attach to be understood in this context that the console does not more moved along the longitudinal axis and thus can be withdrawn. It can therefore also speak of a so-called bayonet lock.

Preferably, the road milling machine according to the invention comprises a hydraulic Steering, with the controls of the hydraulic steering system in a particularly advantageous embodiment of the invention within the console, are arranged and can be operated via the steering wheel.

The invention is of a practical example with Reference to the accompanying figures in detail explained.

Show it:<dl tsize="7" compact="compact"><dt>Fig. 1</dt><dd>a schematic representation of one embodiment of the invention Road milling machine in the form of a rear loader road milling machine in the Side View,</dd><dt>Fig. 1A</dt><dd>a partial plan view of the road milling machine in FIG. 1,</dd><dt>FIG. 2</dt><dd>a plan view of the console of Fig. 1, wherein the steering wheel not shown is,</dd><dt>Fig. 3</dt><dd>a section along the line AA of Fig. 2,</dd><dt>Fig. 4</dt><dd>a section along the line BB of Fig. 2 and</dd><dt>Fig. 5</dt><dd>a section along the line BB of Fig. 2, wherein the chassis not is shown, so that only the console can be seen.</dd></dl>

The road milling machine 2 comprises a chassis 4, which present at the Embodiment is supported on three wheels 6, 6, 8, wherein the two Rear wheels 6, 6 (only one is shown in Fig. 1 seen) laterally in the region of the tail and the front wheel 8 centrally in the region of the front side of the road milling machine 2 is arranged. The rear wheels 6, 6 are adjustable in height by means of a hydraulic, the steering of the road milling machine 2 via the front wheel 8, can be rotated about a vertical axis a. Alternatively, such Road milling machine 2 in place of the wheels 6, 6, 8 and chain drives be worn. Also, the number of planned wheels or Chain drives vary.

Within the chassis 4 is also at least one drive motor for a Milling drum and the wheels 6, 6, 8 and a hydraulic provided. Further, the provided from the prior art known ancillaries, which on whose presentation will be omitted for clarity.

The platform 10 is provided above the rear of the road milling machine 2, where among other things, a seating 12 is for the driver, the is arranged on a bottom plate fourteenth The road milling machine 2, by the vehicle driver both on the bottom plate 14 standing as well as on the Seat 12 can be operated sitting.

Below the driver's cab 10, a roller housing is 16. The Roller housing 16 is a downward, ie in the direction of the road surface 18, open housing in which a milling drum is located 20 wherein the Longitudinal axis of the milling roller 20 extends transversely to the driving direction, which in Fig. 1 Hand of the arrow B is shown. The milling roller 20 projects out of the cylinder housing 16 projecting downward toward the pavement 18th

At the rear in the direction of travel b end of the cylinder housing 16 is a height-adjustable stripping means 22 is provided. In the direction of travel b behind the scraper 22 is again provided a transport device 24, on the milled milled material an accompanying truck with appropriate Loading area can be fed (not shown). Since the milled material via the Heck the road milling machine 2 fed to the truck, it is a called rear loader road milling machine. The road milling machine can but also be a so-called front loading.

In the area of ​​the driver's cab 10 is a steering device is also provided 26, a console 28 and a console 28 arranged on the steering wheel 30 includes. The console 28 is attached at one end 32 side of the chassis 4, whereas the other end of the bracket 28 is formed as a free end 34th The console 28 extends from cross of its fixed end 32 to Direction b to the side, wherein the console above the base plate 14 runs, so that an opening 36 between the bottom plate 14 and the console is formed 28th

As shown in Fig. 1a seen, the console 28 is returned to an inwardly offset side wall of the chassis 4 mounted. To the driver (not shown) free on the platform 10 view through the opening 36 on the to enable road surface 18, the road milling machine 2 or the chassis 4 the road milling machine 2 in the illustrated Ausführungsfbrm in direction b omitted in the opening 36th This means that in the direction of travel b ago the opening 36 a recess 38 is that is shown in the Embodiment extends over the entire height of the chassis. 4 If the Driver is seated, it can, for example, through the opening 36 and the Recess 38 will look on the pavement 18th When the driver is, but leans forward, he can, for example, directly through the recess 38 look.

The steering wheel 30 can be pivoted about the longitudinal axis 40 of the console 28, wherein advantageously the console 28 together with the steering wheel 30 to the Axis 40 is rotated. Thus it is possible, the position of the steering wheel optimal adapt to it, whether the driver is standing or sitting. Also, an adjustment to the size of the driver is thus possible. In special cases, the Pivoting of the steering wheel but also advantageous in that as by Pivoting of the steering wheel, the view from different angles is released. For illustration, in FIG. 1 different angles the driver by arrows c, d, e, f in. The arrows show that in Depending on the position of the steering wheel one way or another sight is released. For the driver, it can certain driving situations useful be the steering wheel regardless of the ergonomic aspects to pivot, so that the view is not obscured on the road from the steering wheel becomes.

The steering wheel 30 can be locked in different pivot positions. Further, the console 28 is releasably secured to the chassis 4, the console 28 attached for easy mounting on the chassis 4 and by means of a Rotational movement about the longitudinal axis 40 of the console 28 can be secured. As the abovementioned features of a particular embodiment of Console 28 and chassis 4 can be realized, Issues The following is under Referring to Figs. 2 to 5 described.

The console 28 comprises a substantially cylindrical casing 42, wherein the wall of the housing 42 is formed in a region as a flat surface 44, to which the steering wheel 30 is attached, on the representation in FIGS. 2 to 5 is omitted for reasons of clarity. At the free end 34 of the Console 28 is the case open to allow easy accessibility to the Control means (not shown) to ensure the hydraulic steering. Nevertheless, the console should be 28 protected by a cover 46 at illustrated hand the dashed line in Fig. 3.

The wall of the housing 42 has a plurality of openings 61 on the flat surface 44 for mounting in Fig. 2, not shown, operating and / or Display elements 62, 63 which at the top of the console next arranged steering wheel (Fig. 1a). The not shown in the figures Leads for the operating and display elements, together with the Hydraulic lines, also not shown through along the longitudinal axis 40 the tubular axle 54 guided into the chassis side cavity 56th Since the Lines of sufficient length, the lines may at Swiveling the console twist, without being damaged.

On the chassis 4 facing the end 32 28, the console a Connecting plate 48, which is shown in particular in Fig. 5 in greater detail. The Connecting plate 48 has a connection opening 50, the oblong is trained. In addition, several stopper holes 52 are in the Connecting plate 50 which all have the same distance to the center have 55 of the connecting plate 50th

Chassis side a fixed, tubular axle 54 is provided in a chassis side cavity 56 opens, through which hydraulic lines can extend. On the axle 54 are a pair of flanges 57, 58 are provided, wherein of the console facing flange 58 is substantially elongated and in a specific pivot position of the connecting plate 48 by the Connecting port 50 can be passed. The chassis 4 facing Flange 57 is arranged on the flange 58 spaced so that between this one outwardly facing, annular groove 60 is formed. Further, on the facing sides of the flanges 57, 58 sliding or sealing means 62 provided in the form of sliding or sealing rings.

To 28 connect the console to the chassis 4, it will be in a Pivoting position slid onto the axle 54, in which the elongate flange 58 through the connection opening 50 is hindurchfürbar. Following this, the console 40 is rotated about its longitudinal axis, so that the edge of Connection opening 50 in the groove 60 between the two flanges 57, 58 rests. A removal of the console 28 in the direction of the longitudinal axis 40, in this Position is no longer possible, so that the bracket 28 is fixed. One speaks also by a so-called bayonet lock. To the console 28 in a lock certain pivotal position, for example, a pre-stressed Pin (not shown) in a locking hole 64 in the fixed Flange 57 and the stopper holes 52 are pushed. Another Rotation of the bracket 28 and the steering wheel attached thereto (not shown) is inhibited thereby.