WO2007017516A1

WO2007017516A1 - Multi-purpose working device

Info

Publication number: WO2007017516A1
Application number: PCT/EP2006/065164
Authority: WO
Inventors: Horst Schwab; Wolfgang Schwab
Original assignee: Horst Schwab Gmbh
Priority date: 2005-08-08
Filing date: 2006-08-08
Publication date: 2007-02-15
Also published as: CA2618020C; DE102005037389A1; CA2618020A1; US20080169110A1; EP1915485B1; EP1915485A1; DE102005037389B4

Abstract

The invention relates to a multi-purpose working device, in particular, for producing flat surfaces. Said working device comprises a rear frame, a front frame, a central part which connects the rear frame to the front frame, and a tool-maintaining device which is connected to the central part by means of an adjusting system, such that said tool-maintaining device can pivot in an essentially perpendicular manner in relation to the longitudinal axis and essentially parallel to the base counter to the central part. The rear frame and the front frame comprise wheels. The central part comprises at least one stationary part and another part which can be displaced counter thereto, such that the displaceable part can be displaced, essentially, in the longitudinal direction in relation to the stationary part. The front frame comprises a front wheel which can rotate about an angle range of at least 120 degrees, preferably at least 180 degrees, a hydraulic control which acts upon the front wheel for directional control, and a hydraulic drive which is used to drive the front wheel.

Description

VIELZWECKARBEITSGERAT

The invention relates to a multipurpose working device, in particular for the production of flat surfaces, with a rear frame, a front frame, the rear connecting to the front frame center part with the front and rear frame moving means, preferably wheels, are attached.

Such multipurpose work equipment is known in the art. For example, from DD 237 860 Al a dozer with these features is known. Rear frame and tool holder of this dozer are connected via two telescopic connections of the central part with the front axle. This grading machine has the considerable disadvantage that the extension and retraction of the two telescopic connections must correspond to each other and therefore are technically very complex. Due to the many moving parts, this grader is also particularly prone to failure. The complicated mechanics continue to make a large and heavy overall construction required, which has a high weight and thus a high surface load of the substrate and is very poor maneuverability. Therefore, such a multi-purpose working device can not be used on sensitive surfaces or narrow areas.

DE 2 155 193 B1 shows a leveling machine in which the equipped with two wheels rigid front axle is connected by a fixed central frame with the biaxial rear frame. At the middle frame a grading tool is mounted, the distance to the underlying underlying soil can be kept constant by means of a Ab Stands device. Also This bulldozer is very heavy and poorly manoeuvrable because of its construction.

DE 1931015 B shows an earthmoving vehicle with a biaxial rear part and a biaxial front part. By a very elaborate hydraulic is trying to ensure that both the biaxial rear part and the biaxial front part during maneuvering have a uniform pressure on the substrate to be processed in order to keep the surface load despite the high weight bearable. The type-related size, however, leads to poor maneuverability of the vehicle.

DE 3418975 A1 describes a tractor on the rear side of which a leveling or earth moving device is arranged. Because of the consequent size of the device this is also poor maneuverability.

Object of the present invention is to avoid the disadvantages described above and to provide a multi-purpose working device available, which in particular has a low basis weight with high maneuverability.

This object is achieved by a multi-purpose working device mentioned above, which has an adjustment means connected to the central part tool holder, so that the tool holder is pivotable substantially perpendicular to the longitudinal axis and substantially parallel to the ground against the central part, wherein the rear and front frame moving means , Preferably wheels, and wherein the central part has at least one fixed and a movable part against it so that the movable part is substantially longitudinally movable against the fixed part.

The front frame has a front wheel and direction control means, preferably a hydraulic control. By using a front wheel, which is rotatable by a total of at least 120 degrees, preferably by at least 160 degrees, particularly preferably by at least 180 degrees, can be minimized together with the moving middle part of the turning radius of the multipurpose work device.

The front frame may have a preferably hydraulic drive for driving the front wheel mounted on the front frame. This makes it possible to turn the front wheel 90 degrees out of the longitudinal axis and thus move the multipurpose work tool in a circle. Thus, even small areas and narrow paths, such as walkways, can be processed with the multi-purpose working device according to the invention.

The attachment of the tool holder on the central part of the multipurpose working device has the additional advantage that the tool holder describes the same way as the middle part and thus reduces approximately the space required for cornering, which increases the maneuverability. This maneuverability is increased even further when the multipurpose working device has a joint between the rear frame and the central part, with which the middle part, preferably by means of hydraulics, is pivotable against the rear frame substantially parallel to the ground. As a result, the radius can be additionally reduced when cornering.

The combination of a powered front wheel, an adjustable middle section and a joint between the center section and the rear frame also makes it possible to work hard-to-reach areas such as the corners of a soccer field.

The possible with the inventive multi-purpose working device compact design with the drive of all wheels allows a particularly lightweight design. Since the weight of the tool on the front and the rear frame of the multipurpose working device can be distributed very well in this structure, the - A -

Surface pressure reduced to the surface to be processed. This is particularly advantageous when the substrate to be processed is only slightly resilient due to the nature, such as existing lawn heating or introduced into the ground drainages.

The tool holder preferably has additional adjustment means. These adjustment means essentially serve to adjust the horizontal and vertical angle of the tool holder relative to the ground. Preferably, these adjustment means comprise hydraulic components, more preferably they are decoupled from each other, so that the horizontal and the vertical angle of the tool holder are independently adjustable.

In addition, it has proved to be advantageous if the tool holder has a displacement device, which essentially serves to laterally extend the tool.

The multipurpose working device preferably has one or more distance measuring devices with the aid of which essentially the vertical distance of the tool connected to the tool holder relative to the ground can be determined. Particularly preferably, the multi-purpose working device on a control device which controls the distance between the tool and the ground, wherein the control device moves the tool connected to the tool holder by adjusting the vertical distance of at least one side of the tool relative to the ground. A previously set distance between see tool and ground is restored at changing substrate by the control device.

It has also proven to be advantageous if the middle part of the multipurpose working device has at least one fixed part which is not movable in the longitudinal direction relative to the rear frame and one movable part, wherein the movable part moves substantially in the longitudinal direction against the stationary part can be. By moving the moving part a change of the wheelbase is achieved.

It is advantageous to make the middle part telescopically and to move the movable part preferably by means of a hydraulic against the fixed part.

In a preferred embodiment, the front frame has means for receiving further elements, preferably for additional weights, particularly preferably for additional tillage equipment.

It has proven to be favorable to provide a three-point hydraulic system on the rear frame, preferably for receiving additional or other devices or tools, particularly preferably other tillage implements.

To further explain the invention, a specific embodiment will be explained below. Showing:

1 shows a multi-purpose working device according to the invention

Fig. 2 is a tool holder with attached tool

Fig. 1 shows an embodiment of a multi-purpose work device 1 according to the invention, comprising a front frame 10, a rear frame 11 and the rear connecting to the front frame middle part 20, consisting of a movable part 21 and a fixed part 22. The front and the rear frame has moving means 40 and 41, which are wheels here. But it can also be used other means of movement, such as caterpillars. This ultimately depends on the specific area of application. About an adjustment, here an axis 70, the tool holder 90 is connected to the fixed center part 22. On the tool holder 90, a tool 30, here a blade, attached. Since the tool holder 90 is connected to the middle part 20 via an axis 70, it essentially describes the same path as the middle part 20. The axis 70 serves to change the horizontal angle, ie the angle between the tool holder 90 and the longitudinal axis of the middle part 20 , As a result, the tool 30 can be aligned obliquely to the direction of travel of the multipurpose working device. Preferably, the tool holder 90 is rotated substantially by a hydraulic or other device suitable for rotating the adjustment device 70.

The middle part 20 has a fixed part 22 and a movable part 21 on the other hand. It has proved to be favorable to form the middle part 20 telescopically. The movable middle part 21 extends within the fixed middle part 22. The movable middle part 21 is preferably extended and retracted by means of a hydraulic system. It is also conceivable that the movable part 21 extends above or below the fixed part 22 and is moved approximately via a crank or chain against the fixed part. The extension and retraction of the movable part 21 causes an enlargement and a reduction of the wheelbase. A reduced wheelbase increases the maneuverability of the multipurpose work implement while an increased wheelbase substantially provides greater stability and additionally creates greater pressure of the tool 30 on the ground. A significant advantage of an increased wheelbase is the fact that this unevenness of the substrate to be processed are better compensated.

The moving means 40 and 41 are here wheels. But it can also be used caterpillars, which depends on the application. The front frame 10 has exactly one front wheel, which may also be designed as a double wheel, and a device for controlling the direction of the front wheel. As a device for directional control, a hydraulic, not shown, is used. In addition, a drive is provided on the front frame 10 to drive the front wheel. In the illustrated embodiment of Figure 1 is to an oil hydraulic drive, not shown, which is operated via flexible oil pressure lines 15.

The use of only one front wheel has two major advantages: on the one hand, the front wheel can be set at an angle of 90 ° to the axis transverse, allowing a rotation of the multi-purpose work tool on its own axis is possible, on the other hand, the maneuverability of the multipurpose working device in particular short central part greatly increased, since the space requirement of the front wheel even when cornering, unlike a known from the prior art large and strong loadable axle, maximum corresponds to the radius of the front wheel.

On the front frame 10 is a device 50 for receiving further elements, preferably additional weights or tools available. By absorbing additional weights, the pressure of the tool 30 is increased to the ground and increases the stability. In addition, the skid resistance of the driven front wheel is increased.

At the rear frame 11 is a three-point hydraulic 60 for receiving other devices, such as a rear stacker, a harrow, a router or other tools attached. This considerably increases the number of possible uses of the multipurpose working device. Likewise, a PTO shaft for driving the recorded on the three-point hydraulic tillage equipment available.

FIG. 2 shows a detailed representation of the tool holder 90 shown in FIG. 1 with the blade 30 mounted as a tool. The tool holder 90 has adjusting devices 100, here two hydraulic arms. A displacement device, not shown here, and two distance measuring devices 120 can additionally be attached to the tool holder 90. The distance measuring devices 120 can here both for measuring the distance be used to the ground as well as to measure the lateral distance. As distance measuring devices 120 ultrasonic devices, laser devices or other devices suitable for measuring a distance are used.

In order to change the vertical angle of the tool 30 to the ground, the adjusting devices 100 are also used. With these adjustment devices 100, the tool 30 is tilted on one side downwards or upwards, whereby the vertical angle of the tool 90 changes to the ground.

Shown are two adjusters 100, with one adjuster on the left and the other adjuster on the right of the tool 30. Hydraulic arms are expediently used as setting devices 100. To tilt the tool 30, these must then correspond independently. The adjusters 100 also serve to adjust the height of the tool 30. By simultaneously retracting or extending the adjusters 100, the tool 30 moves up and down, respectively. The tool 30 itself moves along a guide rail (not shown here) along the holder 115.

The tool holder 90 further has a displacement device, not shown, by means of which the tool 30 can be extended substantially laterally, both left and right. As a result, the range of application of the multipurpose working device is substantially increased, since in particular, together with the setting of the vertical angle to the ground and the substrate side of the multipurpose working device, such as a slope or sidewalk, can be edited. Preferably, the displacement device is also realized as a hydraulic system. But it is also possible to use about gears. The displacement device is preferably operated independently of the adjustment devices 100. In a preferred embodiment, the two distance measuring devices 120 are connected to a control device. Thus, with changing distance of the tool holder 90 to the ground, for example, in inclined floors, slopes or bumps, with the help of the control device, a previously set distance can be kept constant even when the ground is changing relative to the ground. The distance measuring device 120 can also be designed so that it can measure the horizontal distance of the tool holder 90 to a reference object, eg a wall, and keep it constant by means of the control device.

In an embodiment not shown here, the multipurpose working device has a hinge between the rear frame 11 and the fixed part 22. The fixed part 22 is connected by means of the hinge with the rear frame 11 such that the middle part 20 is pivotable substantially parallel to the ground. Through the use of such a hinge, the middle part 20 is not rigidly connected to the rear part 11, which further increases the maneuverability of the multipurpose working device. Preferably, the center part is pivoted to the right or left by means of hydraulics to assist the cornering, wherein the Abschwenkwinkel may be in a fixed relationship to the steering angle of the front wheel.

Claims

- 1 - Sayings

A multipurpose working implement (1), in particular for the manufacture of planar surfaces, comprising a rear frame (11), a front frame (10), a rear part connecting the rear frame (20) and an adjusting means (70) to the middle part (20) connected tool holder (90), so that the tool holder (90) is pivotable against the central part (20) substantially perpendicular to the longitudinal axis and substantially parallel to the ground, the rear (11) and the front frame (10 ) Movement means (40, 41), preferably wheels, and wherein the middle part (20) at least one fixed (22) and a movable part (21) against it so that the movable part (21) substantially longitudinally against the fixed part (21) 22) is movable, characterized in that the front frame (10)

a front wheel (40),

Direction control means, preferably a hydraulic control acting on the front wheel, wherein the direction control means are preferably designed to cover the front wheel (40) over an angular range of at least 120 degrees, preferably at least 160 degrees, more preferably at least 180 degrees, can rotate, and - a drive, preferably a hydraulic drive, for driving the front wheel (40).

2. Multipurpose work implement according to claim 1, characterized in that between the rear frame (11) and the middle part (20) a joint, with which the middle part (20), preferably by means of a hydraulic, essentially - 2 -

chen parallel to the ground against the rear frame (11) is pivotable.

3. multipurpose work tool according to one of the preceding claims, characterized in that it comprises adjusting means (70) for adjusting the horizontal and vertical angle of the tool holder (90) connected to the tool (30) relative to the ground.

4. Multipurpose working device according to claim 3, characterized in that the adjusting means (70) are decoupled from each other and separately adjustable.

5. Multipurpose working device according to claim 3, characterized in that the adjusting means (70) comprise hydraulic components.

6. Multipurpose working device according to one of the preceding claims, characterized in that the tool holder (90) has a displacement device substantially for the lateral extension of the tool (30).

7. Multipurpose working device according to the preceding claim, characterized in that the movable (21) and the fixed part (22) of the central part (20) substantially telescopically, preferably by means of a hydraulic, against each other is movable.

8. Multipurpose working device according to one of the preceding claims, characterized in that the front frame (10) comprises means for receiving further elements, preferably additional weights or other devices, more preferably further tillage equipment having. - 3 -

9. Multipurpose working device according to one of the preceding claims, characterized in that on the rear frame (11) a three-point hydraulic system is mounted, which is intended for receiving other or other tools, preferably tillage equipment.

10. Multipurpose working device one of the preceding claims 3 to 6, characterized in that it comprises at least one distance measuring device, with which substantially the vertical distance of the tool holder (90) connected to the tool (30) is determined relative to the ground, and that it has a control device for the

Regulation of the distance between the tool (30) and ground is determined, wherein the control device with the tool holder (90) connected tool (30) by adjusting the vertical distance of at least one side of the tool (30) relative to the ground moves so that a previously set vertical distance between the tool (30) and ground remains constant with changing ground by the control device.