EP2982803B1 - Construction machine with levelling attachment and levelling method therewith - Google Patents

Description

The invention relates to a construction machine with a mounted Planieranbaugerät with a transversely to the working direction of the construction machine and arranged substantially parallel to the leveling plane support beams and a salary on the support leveling blade, wherein the support beam is arranged a substantially normal to the plane of the dozer blade first pivot axis is provided to the the dozer blade is pivotally hinged to the support beam, and the first pivot axis is disposed at a first, outer end of the support beam. Furthermore, the invention relates to a grading process with it.

Such a construction machine is with his blade in the US 3,662,841 described. The dozer blade is attached to a stable, U-shaped frame of the bulldozer in such a way that it is pivotably articulated to the frame about a ball joint arranged substantially normal to the plane of the dozer blade. In this case, this ball joint is in terms of working width at one end of the frame.

Planing implements are known for construction machinery or in general work machines, so also for construction machines with chain drive, such as bulldozers, hydraulic excavators with wheel gear, wheel loaders or yard trucks.

From the GB 1 322 673 an earth-moving machine for leveling is known, which has a two-part dozer blade on the rear part of the vehicle, in which both parts are mutually slightly adjustable relative to each other about an axis arranged horizontally in the vehicle longitudinal axis. Behind the dozer blade there is a support beam that extends over the entire working width of the dozer blade extends. Furthermore, telescopic sections are provided on the dozer blade, which can be extended via a provided in a support beam hydraulics to adjust the working width of the dozer blade to the respective needs. Although the Planieranbaugerät has a substantially normal to the plane of the dozer blade arranged first and second pivot axis, but these pivot axes are not at the outer end of the support beam, which lowered at a one-sided adjustment, for example, a large part of the dozer blade on one side of the pivot axis, but also an outside outer part of the dozer blade is raised. For the grading of a sidewalk reduction must therefore take place in addition to the pivoting of the dozer blade and an adjustment of the height adjustment, which significantly complicates the operation.

Next is from the US 4,013,132 a dozer blade known which is pivotable about a substantially normal to the plane of the dozer blade arranged pivot axis, wherein the support beam but does not extend over the entire working width of the dozer blade and consequently the fulcrum is far away from the outer edge of the dozer blade. Accordingly, the desired soil profiles can not be created with this dozer blade in a simple design.

The US 3,007,265 describes a dozer blade suspension for a bulldozer, in which a pivoting about a normal to the blade blade arranged rotation axis is provided. Here, the fulcrum is not on an edge of the dozer blade, so even with this dozer blade during pivoting a simultaneous height adjustment must be done by the bulldozer to create the transition of a walkway for sidewalk reduction in a driveway can.

Similar is from the US 2,927,388 given at the suspension shown there for a dozer blade on a bulldozer.

Furthermore, work machines are also known with side arm, on which bulldozer can be mounted. The advantage of this arrangement is that the leveled surface is not run over by the implement itself.

The object of the invention is, starting from the above-mentioned construction machine according to US 3,662,841 To allow a simplification of the contour creation with the planing attachment arranged thereon.

This object is achieved with a construction machine according to claim 1 and a working method according to claim 12. Thus, the working width of the dozer blade is variable in order to produce desired contours in Planum easier.

Characterized in that at a first, outer end of the support beam, the first pivot axis is arranged, the dozer blade during the grading process, for example, in the manufacture of a walkway from the almost horizontal position when leveling the normal walkway about the first pivot axis, which is on the street side of the walkway is positioned to be pivoted by a few degrees that the road side of the dozer blade reaches the street level and forms the Fußwegabsenkung for a motor vehicle entrance on the sidewalk while continuing to plan further. At the end of the entry width, the dozer blade is then in turn pivoted back into the substantially horizontal position about the first pivot axis, whereby the planum for the elevated to the street level footpath is then made.

The advantage lies in the fact that only by pressing a mechanical adjustment the desired profile can be generated in the planum. In all conventional grading equipment, which are struck centrally on the working machine, the only possible rotation about a central pivot axis lying in the direction of travel is simultaneously a height adjustment of Dozer blade required. Both movements must be coordinated so that exactly the desired Planunmprofil for example, a Fußwegabsenkung arises. Errors in the coordination of these two parallel required movements lead to time-consuming reworking in the range of Fußwegabsenkungen.

If a hydraulic cylinder is provided for pivoting the dozer blade about the first pivot axis, the pivoting of the dozer blade on the dozer can conveniently be triggered by the construction machine on which the dozer attachment is remotely actuated via the hydraulic system in the desired shape.

Characterized in that at the other end of the support beam a substantially normal to the plane of the dozer blade arranged second pivot axis is provided, wherein the dozer blade about the first and the second pivot axis is pivotally hinged to the support beam, corresponding reductions can be performed in both directions perpendicular to the working direction. Thus, it is possible, for example, to carry out the planum for footpaths with incorporated Fußwegabsenkungen both for a lying in the direction of travel from the right footpath, as well as for a left in the direction of travel footpath. For this purpose, working machines with side arms are preferably used, since then driving on of the plane just produced is dispensed with. It can thus be started immediately after performing the grading with the pavement of the footpath. There are neither lanes to remove nor perform on the planum of the created Fußwegabsenkungen rework.

In a further refinement, carriage guides, which are arranged essentially vertically between the support beams and the dozer blade, are preferably provided on the support beams for deriving the forces acting on the dozer blade.

In order to be able to perform different widths for the grading to be carried out with a dozer blade, the dozer blade and the support beam are designed to be telescopic to adjust the working width. Preferably, a third hydraulic cylinder is arranged in the support beam, with which the working width of the support beam and the blade associated therewith can be remotely operated from the construction machine.

In order to attach the planing attachment quickly to a construction or working machine, a quick coupling plate for changeable coupling to a quick-release counter-plate of the construction machine is provided on the support beam.

If the dozer blade is designed substantially level, all significant grading can be done with the dozer blade.

Alternatively, the dozer blade is arched around an axis parallel to the working width in order to be able to carry out profiling work on the ground.

For leveling sidewalks arranged sideways it is particularly preferred if a laterally projecting boom in the direction of travel of the construction machine is provided on which the grading attachment is attached. The construction machine then moves on the driveway and can plan the sidewalk next to the driveway in its desired level, without this being driven on.

Characterized in that the construction machine has an undercarriage with chain drive, wherein the boom is formed with a boom mounting plate for removable mounting on the undercarriage within the track drive and the distal end of the boom a quick coupling plate for holding the Planieranbaugerätes is provided, both the side of the undercarriage with Kennlaufwerk fixed boom, as well as the arranged at the distal end of the boom planing attachment in a simple and fast manner be connected or disconnected. In a construction machine with an undercarriage with chain drive high positional stability is also met with low surface pressure, so that the boom on the boom laterally projecting arranged Planieranbaugerät performs as little unwanted vibration movements.

In order to adjust the height level of the walkway to be leveled in a simple manner and nachsteuern, the boom on a parallel adjustment in the boom mounting plate.

The working method carried out with this construction machine with a boom mounted on a boom sideways attachment is characterized by the boom holding the Planieranbaugerät next to the lane of the construction machine and a planum for a path, sidewalk or footpath is produced in a continuously progressive mode of operation in the direction of travel , Wherein pivoting the dozer blade about the side facing away from the construction machine side of the support beam pivot axis sidewalk subsidence are performed directly in the continuously progressive leveling. Thus, sidewalk subsidence can be performed for driveways in the continuously progressive leveling, the dozer blade only has to be pivoted about a construction machine remote pivot axis by actuation of a hydraulic cylinder and must be reset after leveling the driveway width again.

Hereinafter, two embodiments of the invention will be described in detail with reference to the accompanying drawings.

Fig. 1

eine Draufsicht eines Planieranbaugerätes in einer ersten Ausführungsform,

Fig. 2

das Planieranbaugerät gemäß Fig. 1 in einer Rückansicht und

Fig. 3

ein Planieranbaugerät in einer zweiten Ausführungsform in Seitenansicht.

It shows:

Fig. 1

a plan view of a Planieranbaugerätes in a first embodiment,

Fig. 2

the dozer attachment according to Fig. 1 in a rear view and

Fig. 3

a Planieranbaugerät in a second embodiment in side view.

In Fig. 1 a Planieranbaugerät is shown in a partially sectioned plan view. The Planieranbaugerät has a support beam 1, on which a blade 2 is held. The support beam 1 can be coupled via a quick coupling plate 5 to a work / construction machine, not shown.

The support beam 1 has two nested support beam sections 11 and 12, which are telescopically over a provided in the support beam 1 third hydraulic cylinder 13. Thus, the support beam 1 in its length (= working width) can be preset.

The dozer blade 2 consists of a first dozer blade section 21 and a second dozer blade section 22 telescopically connected thereto so that the adjustment movements for adjusting the working width, which are effected in the support beam 1, can likewise be carried out by the dozer blade 2. Furthermore, the dozer blade 2 at its distal ends depending on a pivotable side wing 23 for guiding the moving blade 2 from the leveling material. The position of the wing can be performed remotely operated hydraulic cylinder, not shown.

Furthermore, the planing attachment in the present embodiment, two pivoting devices 3, each cause a pivotable articulation of the dozer blade 2 on the support beam 1. Both pivoting devices 3 are respectively at the distal end of the support beam 1 and the dozer blade 2. The in the Fig. 1 and 2 The left-side pivoting device 3 has a first pivot axis 31 anchored to the first blade section 21 near the lower edge, a bracket on the first support beam section 11 and a hydraulic cylinder 33 clamped between the first pivot axis 31 and the bracket 34. Accordingly, the right pivot device 3 is formed, wherein the in Fig. 2 shown below right axis of rotation second pivot axis 32 is.

Between support beam 1 and blade 2 guide slide 4 serve as a mechanical connection for the discharge of the forces acting on the blade 2 loads during grading. The Guide carriage 4 are formed on both end portions of the support beam 1, once on the first support beam portion 11 and once on the second support beam portion 12, each with a rotatable receptacle with T-shaped carriage 41 and each with a arranged on the back of the dozer blade 2 slide guide 42. Each of the carriages 41 associated with two slide guides 42 are correspondingly mounted on the first Blade 21 and the second on the second Blade 22 in the rear in vertical alignment (see Fig. 2 ).

In an alternative embodiment is in the Fig. 3 a Planieranbaugerät shown with a dozer blade 2, which is formed curved around an axis parallel to the working width. In Fig. 3 this situation is shown partially cut in plan view to simplify the drawing. Identical or comparable components and features are designated by the same reference numerals as for the first embodiment. Also, this support beam 1 with blade 2 is formed telescopic.

Hereinafter, the operation with the planing attachment according to the invention with reference to the accompanying drawings, in particular the first embodiment according to Fig. 1 and 2 described in detail.

The Planieranbaugerät example, on a construction machine with crawler on a side arm, which is attached in the region of the undercarriage within the track drive with a boom, attached to this arm laterally to the direction of travel next to the construction machine. The basic altitude and orientation of the planing attachment to the working direction X, in the Fig. 1 and 3 is illustrated with dotted arrow, is set on the side arm and the hydraulic arranged therein by the construction machine driver. Thus, laterally from the lane of the construction machine, a strip at the desired height, for example for a walkway, can be leveled.

If, as the grading process progresses, an access area on the sidewalk is reached where a sidewalk reduction to the street is to take place, the dozer blade 2 is moved around in the sidewalk Fig. 1 and 2 arranged on the bottom right second pivot axis 32 by means of activating the left hydraulic cylinder 33 of the pivoting device 3 so counterclockwise pivoted (pivoting movement S), then that in Fig. 2 shown dashed line Y is leveled. When reaching the entrance end, in turn, the hydraulic cylinder 33 is activated and the blade 2 in the in Fig. 2 pulled back drawn position drawn. Since this process takes place in the working direction X while the work progresses, the lateral adaptation ramps from the normal pavement height to the respective lowered pavement height are thus also formed. By pivoting about the second pivot axis 32, which marks in the present example the side facing away from the road outside of the sidewalk, thus the profile of a sidewalk reduction in the entrance area is profiled very precisely and easily.

By providing the two pivoting possibilities about the first pivot axis 31 and the second pivot axis 32, the attachment can also be used in the working direction to the left of the road to be processed sidewalks. Furthermore, for example, elevations or subsidences of the sidewalk can be compensated for the respective adjoining property boundary to equalize a changed level by operating the other pivoting device 3.

In addition, since the Planieranbaugerät has a telescoping of the dozer blade 2, and different working widths can be set on the arranged in the support beam 1 third hydraulic cylinder 13 and also changed during planing.

Overall, the Planieranbaugerät invention allows a fast and effective grading progress with continuous training of one-sided subsidence or increases in planum.

LIST OF REFERENCE NUMBERS

1

stringers

11

first support beam section

12

second support beam section

13

third hydraulic cylinder

2

Planierschild

21

first dozer blade section

22

second blade section

23

wing

3

swivel device

31

first pivot axis

32

second pivot axis

33

hydraulic cylinders

34

holder

4

Guide carriage connection

41

carriage

42

carriage guide

5

Schnellkupplungsplatte

S

pivotal movement

X

working direction

Y

tilted leveling surface

Claims (12)

1. A construction machine, having mounted thereon a grading attachment having a support beam (1) that is arranged transversely to the working direction (X) of the construction machine and substantially parallel to the grading plane, and a grading blade (2) that is mounted on the support beam (1), wherein there is provided on the support beam a first pivot axis (31) that is arranged substantially perpendicular to the plane of the grading blade (2) and about which the grading blade (2) is articulated to pivot on the support beam (1), and the first pivot axis (31) is arranged at a first outer end of the support beam (1), characterised in that, for the purpose of adjusting the working width, the grading blade (2) and the support beam (1) are constructed to be telescopic, such that the support beam (1) extends over the whole of the respectively adjusted working width of the grading blade (2).
2. A construction machine according to Claim 1, characterised in that a hydraulic cylinder (33) is provided for the purpose of pivoting the grading blade (2) about the first pivot axis (31).
3. A construction machine according to Claim 1 or 2, characterised in that there is provided at the other outer end of the support beam (1) a second pivot axis (32) that is arranged substantially perpendicular to the plane of the grading blade (2), wherein the grading blade (2) is articulated to pivot on the support beam (1) about the first and the second pivot axis (32).
4. A construction machine according to one of the preceding claims, characterised in that substantially vertical carriage guides (42) are provided between the support beam (1) and the grading blade (2), for the purpose of diverting the forces acting on the grading blade (2) onto the support beam (1).
5. A construction machine according to one of the preceding claims, characterised in that there is arranged in the support beam (1) a third hydraulic cylinder (13) by which the working width of the support beam (1) and the grading blade (2) connected thereto can be adjusted by remote control from the construction machine.
6. A construction machine according to one of the preceding claims, characterised in that there is provided on the support beam (1) a quick-acting coupling plate (5) for exchangeably coupling to a quick-acting coupling mating plate on the construction machine.
7. A construction machine according to one of the preceding claims, characterised in that the grading blade (2) is of substantially planar construction.
8. A construction machine according to one of Claims 1 to 6, characterised in that the grading blade (2) is curved around an axis parallel to the working width.
9. A construction machine according to one of Claims 1 to 8, characterised in that a boom that projects laterally in the direction of travel of the construction machine is provided and the grading attachment is mounted thereon.
10. A construction machine according to Claim 9, characterised in that the construction machine has an undercarriage with a track roller, wherein the boom is constructed to have a boom securing plate for detachably securing to the undercarriage within the track roller, and there is provided at the distal end of the boom a quick-acting coupling plate for holding the grading attachment.
11. A construction machine according to Claim 10, characterised in that the boom has a parallel adjustment close to the boom securing plate.
12. A grading method, having a construction machine according to one of Claims 9 to 11 having a grading attachment, characterised in that the grading attachment is held by the boom alongside the carriageway of the construction machine, and a subgrade for a pavement that is elevated in relation to the carriageway is produced in the direction of travel in a continuously progressing working operation, wherein, by pivoting the grading blade about a substantially horizontal pivot axis that is oriented in the direction of travel and is arranged on the side of the support beam remote from the construction machine, lowered portions in the pavement are made directly as the grading progresses continuously.

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