EP2161376B1 - Mobile joint cutter - Google Patents

Mobile joint cutter Download PDF

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Publication number
EP2161376B1
EP2161376B1 EP09164875.8A EP09164875A EP2161376B1 EP 2161376 B1 EP2161376 B1 EP 2161376B1 EP 09164875 A EP09164875 A EP 09164875A EP 2161376 B1 EP2161376 B1 EP 2161376B1
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EP
European Patent Office
Prior art keywords
joint cutter
saw blade
cutter according
chassis frame
mobile joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09164875.8A
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German (de)
French (fr)
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EP2161376A2 (en
EP2161376A3 (en
Inventor
Josef Weiland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lissmac Maschinenbau GmbH
Original Assignee
Lissmac Maschinenbau GmbH
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Publication date
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Publication of EP2161376A2 publication Critical patent/EP2161376A2/en
Publication of EP2161376A3 publication Critical patent/EP2161376A3/en
Application granted granted Critical
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
    • E01C23/0926—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
    • E01C23/0933—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut

Definitions

  • the invention relates to a movable floor cutter according to the preamble of claim 1.
  • Joint cutters are known from the prior art in various designs, including, for example, on the DE 298 18 892 U1 , the DE 43 11 778 C2 , the DE 87 14 999 U and the joint cutters from LISSMAC Maschinenbau u. Diamantwerkmaschinee GmbH with the designation FS28D and FS33DT is referenced.
  • Movable floor saws are used to introduce cuts in road surfaces or similar surfaces made of asphalt, concrete or similar materials.
  • the movable floor saws have a chassis frame with wheels and a sawing device on.
  • the sawing device has a rotary saw blade which can be lowered into the working position by means of an adjusting device.
  • the drive of the saw blade can be done via a separate saw blade motor or via a mechanical connection to the drive motor, which is used for the propulsion of the joint cutter.
  • a design of the joint cutter with a separate saw blade motor has the advantage that the adjusting device to lift the saw blade or to lower the saw blade back to the working position, can be easily configured.
  • the saw blade with the saw blade motor by a lifting device, such as a column guide, as in the DE 43 11 778 C2 is disclosed to raise or lower.
  • a separate saw blade motor is necessary, whereby the movable floor cutter is correspondingly expensive.
  • the saw blade or the drive shaft of the saw blade when this is raised, removed from the chassis frame and thereby less accurately performed.
  • the saw blade assumes a "rigid" position on the chassis frame, d. H. the saw blade can not be moved relative to the chassis frame, z. B., be, since thereby the mechanical connection between the drive motor and the saw blade is changed. It is therefore necessary to raise the entire chassis frame when the saw blade is to be raised.
  • the adjusting device is a so-called scissors principle for raising or lowering the saw blade used, as in FIG. 1 of the DE 87 14 999 U is disclosed.
  • the axle with the wheels which is arranged at the end of the chassis frame, on which the saw blade is located, moves to lift the saw blade, in the direction of the other Impeller axis.
  • the impeller axis which is moved by the adjusting device, attached to a point between the two wheel axles on the chassis frame, so that the chassis frame is raised at the end to which the saw blade is arranged when the adjusting device, the impeller axis in the direction the other impeller axis shifts.
  • the adjusting device may comprise the displacement of the impeller axis via an electro-hydraulic device, for example a hydraulic cylinder, which is arranged between a suitable point of the axis of the wheels and the chassis frame.
  • the saw blade is affected by the displacement of the associated impeller in his leadership. To make matters worse, that at a small center distance, the blade when cutting the entire joint cutter pulling out of the track.
  • Another disadvantage of the contraction of the front and rear wheels is that the tilting tendency of the joint cutter is increased.
  • Movable floor cutters are known from the prior art, which have a driver's seat, d. H. in which the operator travels with the joint cutter. Furthermore, floor cutters are known in which the operator runs behind the joint cutter to control this. In the joint cutters in which the operator mitun, a separate drive motor for the saw blade is usually provided, as in this case, raising the chassis frame on an axis is detrimental to the seating position. Joint cutters, where the operator runs behind the joint cutter, are known both with and without a separate saw blade motor.
  • the present invention has for its object to provide a movable joint cutter, which solves the disadvantages of the prior art, in particular makes it possible to raise the blade without affecting its leadership and which is inexpensive and easy to produce.
  • the saw blade moves regardless of whether the saw blade is in the working position or in a raised position, in the horizontal direction only slightly opposite to the associated impeller, whereby a good leadership is achieved.
  • the solution according to the invention also avoids tilting of the joint cutter, since the axial distance between the impeller axes does not change or only slightly changes when the saw blade is raised.
  • the saw blade can be driven by a mechanical connection via the motor, which provides for the advance of the movable joint cutter. An independent or additional drive source for the saw blade is thus not necessary.
  • the linear guide device and the lifting device are arranged axially parallel to each other and also parallel to the axis and extend, on the one hand a stable raising and lowering of the joint cutter allows at the end to which the saw blade is arranged, on the other hand the device constructively simple and inexpensive to produce.
  • the impeller axis is fixed to the chassis frame only via the linear guide device and optionally the lifting device.
  • the impeller axis is fixed to the chassis frame only via the linear guide device and optionally the lifting device.
  • the impeller axis is provided in the manner as in the prior art according to the "scissors principle" (see, for example FIG. 1 of the DE 87 14 999 U ) the case is.
  • the retraction and extension of the impeller axis relative to the chassis frame should only result from a linear movement of the linear guide device or the lifting device.
  • the impeller axis has moved away from the position on the chassis frame at which the impeller axis is in the working position.
  • the impeller has not removed from the chassis frame, but is only along the Chassis frame in the direction of the other barrel axis (to the rear) hiked.
  • the linear guide device comprises a first linear guide, which has two coaxially arranged and displaceable guide elements.
  • the guide elements may preferably be a guide column and a guide rod which is movable and stably guided therein.
  • the guide column can be firmly connected to the chassis frame, for example by welding or screws.
  • the linear guide device has at least two, preferably exactly two, linear guides.
  • the two linear guides can be constructed identically. It is advantageous if in each case a linear guide at one end of the impeller axis, d. H. preferably in the region in which the wheels are arranged on the impeller axis, are fixed.
  • the lifting device is designed as a hydraulic device.
  • An embodiment of the lifting device as a hydraulic device, it is possible to reliably and uniformly and inexpensively on and extend the Laufradachsen.
  • the hydraulic device may comprise two hydraulic elements arranged coaxially with each other and extendable are.
  • One of the hydraulic elements may preferably be a hydraulic cylinder and the other hydraulic element may be a piston movable in the cylinder.
  • the cylinder may preferably be fixed to the vehicle frame and the piston to the impeller axis. It is also conceivable to fix the hydraulic piston (or, more generally, the end of the lifting device, which can be extended downward from the vehicle frame) to the end of the linear guide device which is fastened to the wheel axle.
  • the lifting device is thus not directly attached to the Laufradachachse, but engages on the linear guide device to this.
  • the retraction and extension movement of the lifting device can also take place via a motor, for example an electric motor or in another manner, for example via a gearing and a suitable actuator.
  • the solution according to the invention can be realized independently of whether a separate saw blade motor or its own drive source is provided for the saw blade, or whether the drive of the saw blade takes place via a drive motor provided for advancing the joint cutter.
  • the invention is particularly suitable if the drive of the saw blade on a feed to the joint cutter provided drive motor takes place.
  • the separate saw blade motor for the saw blade can be saved.
  • the connection of the drive motor with the saw blade can take place via a suitable mechanical connection, preferably a V-belt.
  • the wheels now move away from the vehicle frame by a substantially vertical movement or a linear device.
  • the vehicle frame is thus at the end at which the saw blade is raised or lowered, without the impeller axis in the horizontal direction substantially away from the saw blade, in particular the distance between the impeller axes is not changed so that there are disadvantages.
  • Joint cutters are well known from the general state of the art, for example, on the DE 298 18 892 U1 , the DE 203 10 916 U1 and the DE 87 14 999 U Reference will therefore be made below to the features essential to the invention.
  • the joint cutter according to the invention is particularly suitable for introducing cuts in road surfaces or similar surfaces made of asphalt, concrete or similar materials.
  • the joint cutter according to the invention has a chassis frame 1, each with two front wheels 2, which are arranged on a front wheel axle 3, and two rear wheels 4, which are arranged on a rear wheel axle 5.
  • the drive motor 6 and the necessary drive connections are basically known, which is why they will not be described in detail below.
  • the drive motor 6 provides in the exemplary embodiment for the necessary advance of the joint cutter, so it drives one or more of the wheels 2, 4 at.
  • the drive motor 6 also serves to drive a sawing device 7 with a rotating saw blade 8.
  • the necessary mechanical connecting elements between the sawing device 7 and the saw blade 8 and the drive motor 6 are basically known and therefore not described in detail below.
  • the sawing device 7 and the saw blade 8 are fixed with respect to their position on the chassis frame 1, ie the position of the sawing device 7 and the saw blade 8 is independent of whether the saw blade 8 is raised or in the working position, compared to the chassis frame 1 unchanged or "rigid".
  • a "rigid" or unchanged position of the saw blade relative to the chassis frame 1 is to be understood as meaning that the saw blade 8 and necessary parts of the sawing device Turn 7 opposite the chassis frame 1.
  • the sawing device 7 is pivotable from one longitudinal side of the chassis frame 1 to another longitudinal side.
  • a "rigid" or stationary attachment of the sawing device 7 or of the saw blade 8 to the chassis frame 1 essentially means that the position of the sawing device 7 or of the saw blade 8 does not change to the chassis frame 1, when the saw blade 8 is moved from its working position to a raised position.
  • the sawing device 7 and the saw blade 8 are arranged at a front end of the chassis frame 1 in such a way that the saw blade 8 is arranged laterally on the chassis frame 1 in the region of one of the front wheels 2. In general, it is advantageous if the saw blade 8 is arranged at a front end in the direction of travel of the chassis frame 1.
  • the adjusting device 9 in this case has an associated with the chassis frame 1 linear guide device 10, at one end of the saw blade 8 associated barrel axis 3 is fixed.
  • the linear guide device 10 allows a substantially vertical retraction and extension of the impeller axis 3 relative to the chassis frame 1.
  • the adjusting device 9, a lifting device 11 which is arranged axially parallel to the linear guide device 10 and the lifting elements 12, 13 axially parallel to the linear guide device 10 on and are extendable.
  • the running axis 3 is connected to the chassis frame 1 only or exclusively via the linear guide device 10 and the lifting device 11. Ie. the movement that the impeller axis 3 performs during retraction or extension of the chassis frame 1, is exclusively due to the movement of the linear guide device 10 and the lifting device eleventh
  • the linear guide 14 engages at one end of the impeller axis 3 and the second linear guide 15 at the other end of the impeller axis 3 at.
  • the first and the second linear guide 14, 15 are identical.
  • the first linear guide 14 has two coaxially arranged and linearly displaceable guide elements 16, 17.
  • a guide element is included as a guide pillar 16 and the other guide element as a guide rod 17 is formed.
  • the guide column 16 is fixed or immovably connected to the chassis frame 1, for example by screwing, riveting or welding.
  • the guide rod 17 is fixed to the impeller 3.
  • the guide rod 17 is in the guide column 16 stable and linear or along the common axis movable.
  • the guide column 16 has over the guide rod 17 has a smaller axial length.
  • the lifting device 11 has two coaxially arranged and linearly movable to one another lifting elements 12, 13.
  • the lifting device is designed as a hydraulic device 11.
  • the lifting element 12 provides a Cylinder is, which is firmly connected in the embodiment with the chassis frame 1, for example by screwing, riveting or welding.
  • the lifting element 13 is designed as a piston, which is in the cylinder 12 in response to an application of a hydraulic medium (not shown in detail) is displaceable.
  • the piston 13 is fixed to the impeller axis 3.
  • the piston 13 in the vicinity of one of the linear guides, in the embodiment of the first linear guide 14, set.
  • the piston 13 is acted upon in such a way with a hydraulic medium, that the piston 13 extends downwardly from the chassis frame 1, when it is acted upon by a hydraulic medium.
  • the lifting device 11 can also have a plurality of cylinder-piston units which are optionally supplied with hydraulic medium by one or more hydraulic devices.
  • the cylinder-piston unit which represents the lifting device 11, and the first and second linear guide 14, 15, which by the guide columns 16 and the guide rod 17 are formed, arranged axially parallel to one another or extendable and retractable.
  • the lifting device 11 and the first and the second linear guide 14, 15 penetrate the chassis frame 1 and are arranged substantially at right angles to the chassis frame or retracted and extended.
  • the impeller axis 3 and the wheels 2 are removed from the chassis frame 1. In practice, this leads to that the chassis frame 1 is raised relative to the impeller axis 3 and against the wheels 2.

Description

Die Erfindung betrifft einen verfahrbaren Fugenschneider nach dem Oberbegriff von Anspruch 1.The invention relates to a movable floor cutter according to the preamble of claim 1.

Fugenschneider sind aus dem Stand der Technik in vielfältigen Ausführungen bekannt, wozu beispielsweise auf die DE 298 18 892 U1 , die DE 43 11 778 C2 , die DE 87 14 999 U und die Fugenschneider der Firma LISSMAC Maschinenbau u. Diamantwerkzeuge GmbH mit der Bezeichnung FS28D und FS33DT verwiesen wird.Joint cutters are known from the prior art in various designs, including, for example, on the DE 298 18 892 U1 , the DE 43 11 778 C2 , the DE 87 14 999 U and the joint cutters from LISSMAC Maschinenbau u. Diamantwerkzeuge GmbH with the designation FS28D and FS33DT is referenced.

Verfahrbare Fugenschneider dienen zum Einbringen von Schnitten in Straßendecken oder dergleichen Flächen aus Asphalt, Beton oder vergleichbaren Werkstoffen. Die verfahrbaren Fugenschneider weisen einen Fahrgestellrahmen mit Laufrädern und eine Sägeeinrichtung auf. Die Sägeeinrichtung weist ein über eine Verstelleinrichtung in Arbeitsstellung absenkbares, rotierendes Sägeblatt auf. Der Antrieb des Sägeblatts kann über einen separaten Sägeblattmotor oder über eine mechanische Verbindung mit dem Antriebsmotor erfolgen, der für den Vortrieb des Fugenschneiders eingesetzt wird.Movable floor saws are used to introduce cuts in road surfaces or similar surfaces made of asphalt, concrete or similar materials. The movable floor saws have a chassis frame with wheels and a sawing device on. The sawing device has a rotary saw blade which can be lowered into the working position by means of an adjusting device. The drive of the saw blade can be done via a separate saw blade motor or via a mechanical connection to the drive motor, which is used for the propulsion of the joint cutter.

Eine Ausbildung des Fugenschneiders mit einem separaten Sägeblattmotor hat den Vorteil, dass die Verstelleinrichtung, um das Sägeblatt anzuheben bzw. um das Sägeblatt wieder in die Arbeitsstellung abzusenken, einfach ausgestaltet sein kann. Hierzu ist es lediglich notwendig, das Sägeblatt mit dem Sägeblattmotor durch eine Hubeinrichtung, beispielsweise eine Säulenführung, so wie dies in der DE 43 11 778 C2 offenbart ist, anzuheben bzw. abzusenken. Diese Lösungen haben jedoch den Nachteil, dass ein separater Sägeblattmotor notwendig ist, wodurch der verfahrbare Fugenschneider entsprechend teuer wird. Des weiteren besteht der Nachteil, dass sich das Sägeblatt bzw. die Antriebswelle des Sägeblatts, wenn dieses angehoben wird, von dem Fahrwerkrahmen entfernt und dadurch weniger exakt geführt wird. Für eine Führung des Sägeblatts ist es von Vorteil, wenn sich das Sägeblatt möglichst nah am Fahrwerkrahmen befindet.A design of the joint cutter with a separate saw blade motor has the advantage that the adjusting device to lift the saw blade or to lower the saw blade back to the working position, can be easily configured. For this purpose, it is only necessary, the saw blade with the saw blade motor by a lifting device, such as a column guide, as in the DE 43 11 778 C2 is disclosed to raise or lower. However, these solutions have the disadvantage that a separate saw blade motor is necessary, whereby the movable floor cutter is correspondingly expensive. Furthermore, there is the disadvantage that the saw blade or the drive shaft of the saw blade, when this is raised, removed from the chassis frame and thereby less accurately performed. For a guide of the saw blade, it is advantageous if the saw blade is as close as possible to the chassis frame.

Dadurch, dass das Sägeblatt mit dem Sägeblattmotor angehoben wird, sich also von einer stabilen Position vom Fahrwerkrahmen entfernt, schwingt das Sägeblatt stärker. Wenn der Antrieb des Sägeblatts beispielsweise über einen Keilriemen erfolgt, führt dies dazu, dass dieser nicht exakt läuft.The fact that the saw blade is lifted with the saw blade motor, ie moves away from a stable position from the chassis frame, causes the saw blade to vibrate more strongly. For example, if the saw blade is driven by a V-belt, it will not work properly.

Bei einer Ausgestaltung des verfahrbaren Fugenschneiders mit einem gemeinsamen Antriebsmotor für den Vorschub und für das Sägeblatt ist es unumgänglich, dass das Sägeblatt eine "starre" Position auf dem Fahrwerkrahmen einnimmt, d. h. das Sägeblatt kann nicht gegenüber dem Fahrwerkrahmen bewegt, z. B. angehoben, werden, da dadurch die mechanische Verbindung zwischen dem Antriebsmotor und dem Sägeblatt verändert wird. Es ist deshalb notwendig, den gesamten Fahrwerkrahmen anzuheben, wenn das Sägeblatt angehoben werden soll.In one embodiment of the movable joint cutter with a common drive motor for the feed and for the saw blade, it is essential that the saw blade assumes a "rigid" position on the chassis frame, d. H. the saw blade can not be moved relative to the chassis frame, z. B., be, since thereby the mechanical connection between the drive motor and the saw blade is changed. It is therefore necessary to raise the entire chassis frame when the saw blade is to be raised.

Bei der Lösung, bei der der Antrieb des Sägeblatts über eine mechanische Verbindung (z. B. einem Keilriemen) mit dem für den Vorschub des Fugenschneiders notwendigen Antriebsmotor erfolgt, ist vorzugsweise vorgesehen, dass die Verstelleinrichtung ein sogenanntes Scherenprinzip zum Anheben bzw. Absenken des Sägeblatts verwendet, so wie dies in Figur 1 der DE 87 14 999 U offenbart ist. Die Achse mit den Laufrädern, die an dem Ende des Fahrwerkrahmens angeordnet ist, an welchem sich auch das Sägeblatt befindet, bewegt sich, um das Sägeblatt anzuheben, in Richtung auf die andere Laufradachse. Dabei ist die Laufradachse, die durch die Verstelleinrichtung bewegt wird, an einem Punkt zwischen den beiden Laufradachsen an dem Fahrwerkrahmen befestigt, so dass der Fahrwerkrahmen an dem Ende, an dem das Sägeblatt angeordnet ist, angehoben wird, wenn die Verstelleinrichtung die Laufradachse in Richtung auf die andere Laufradachse verschiebt. Die Verstelleinrichtung kann zur Verschiebung der Laufradachse über eine elektro-hydraulische Vorrichtung, beispielsweise einen Hydraulikzylinder, verfügen, der zwischen einer geeigneten Stelle der Achse der Laufräder und des Fahrwerkrahmens angeordnet ist. Diese Lösung ist kostengünstig, da auf einen separaten Sägeblattmotor für das Sägeblatt verzichtet werden kann. Allerdings besteht wiederum der Nachteil, dass das Sägeblatt seine Führung durch das zugeordnete Laufrad verliert, wenn das Sägeblatt angehoben wird. Des weiteren wird der Geradeauslauf des verfahrbaren Fugenschneiders durch ein Anheben des Sägeblatts beeinträchtigt, da sich der Abstand zwischen der vorderen Laufradachse und der hinteren Laufradachse reduziert. Bei einem kleineren Achsabstand folgt der Fugenschneider schlechter der Spur als bei einem großen Achsabstand.In the solution in which the drive of the saw blade takes place via a mechanical connection (eg a V-belt) with the drive motor necessary for advancing the joint cutter, it is preferably provided that the adjusting device is a so-called scissors principle for raising or lowering the saw blade used, as in FIG. 1 of the DE 87 14 999 U is disclosed. The axle with the wheels, which is arranged at the end of the chassis frame, on which the saw blade is located, moves to lift the saw blade, in the direction of the other Impeller axis. In this case, the impeller axis, which is moved by the adjusting device, attached to a point between the two wheel axles on the chassis frame, so that the chassis frame is raised at the end to which the saw blade is arranged when the adjusting device, the impeller axis in the direction the other impeller axis shifts. The adjusting device may comprise the displacement of the impeller axis via an electro-hydraulic device, for example a hydraulic cylinder, which is arranged between a suitable point of the axis of the wheels and the chassis frame. This solution is inexpensive because it can be dispensed with a separate blade motor for the saw blade. However, again there is the disadvantage that the saw blade loses its guidance by the associated impeller when the saw blade is raised. Furthermore, the straight running of the movable joint cutter is impaired by a lifting of the saw blade, since the distance between the front wheel axle and the rear wheel axle is reduced. With a smaller center distance the joint cutter follows the track worse than with a large center distance.

Das Sägeblatt ist durch die Verschiebung des zugeordneten Laufrads in seiner Führung beeinträchtigt. Erschwerend kommt hinzu, dass bei einem kleinen Achsabstand das Sägeblatt beim Schneiden den gesamten Fugenschneider aus der Spur zieht. Ein weiterer Nachteil des Zusammenziehens der vorderen und hinteren Laufräder besteht darin, dass die Kippneigung des Fugenschneiders erhöht wird.The saw blade is affected by the displacement of the associated impeller in his leadership. To make matters worse, that at a small center distance, the blade when cutting the entire joint cutter pulling out of the track. Another disadvantage of the contraction of the front and rear wheels is that the tilting tendency of the joint cutter is increased.

Aus dem Stand der Technik sind verfahrbare Fugenschneider bekannt, die einen Fahrersitz aufweisen, d. h. bei der die Bedienperson mit dem Fugenschneider mitfährt. Ferner sind Fugenschneider bekannt, bei denen die Bedienperson hinter dem Fugenschneider herläuft, um diesen zu steuern. Bei den Fugenschneidern, bei denen die Bedienperson mitfährt, ist im Regelfall ein separater Antriebsmotor für das Sägeblatt vorgesehen, da in diesem Fall ein Anheben des Fahrwerkrahmens an einer Achse nachteilig für die Sitzposition ist. Fugenschneider, bei denen die Bedienperson hinter dem Fugenschneider herläuft, sind sowohl mit als auch ohne einem separaten Sägeblattmotor bekannt.Movable floor cutters are known from the prior art, which have a driver's seat, d. H. in which the operator travels with the joint cutter. Furthermore, floor cutters are known in which the operator runs behind the joint cutter to control this. In the joint cutters in which the operator mitfährt, a separate drive motor for the saw blade is usually provided, as in this case, raising the chassis frame on an axis is detrimental to the seating position. Joint cutters, where the operator runs behind the joint cutter, are known both with and without a separate saw blade motor.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen verfahrbaren Fugenschneider zu schaffen, der die Nachteile des Standes der Technik löst, es insbesondere ermöglicht, das Sägeblatt anzuheben, ohne dessen Führung zu beeinträchtigen und der kostengünstig und einfach herstellbar ist.The present invention has for its object to provide a movable joint cutter, which solves the disadvantages of the prior art, in particular makes it possible to raise the blade without affecting its leadership and which is inexpensive and easy to produce.

Diese Aufgabe wird erfindungsgemäß durch Anspruch 1 gelöst.This object is achieved by claim 1.

Durch die erfindungsgemäße Lösung verschiebt sich das Sägeblatt unabhängig davon, ob sich das Sägeblatt in der Arbeitsstellung oder in einer angehobenen Stellung befindet, in horizontaler Richtung nur geringfügig gegenüber dem zugeordneten Laufrad, wodurch eine gute Führung erreicht wird. Die erfindungsgemäße Lösung vermeidet zudem ein Kippen des Fugenschneiders, da sich der Achsabstand zwischen den Laufradachsen nicht oder nur geringfügig verändert, wenn das Sägeblatt angehoben wird.By the solution according to the invention, the saw blade moves regardless of whether the saw blade is in the working position or in a raised position, in the horizontal direction only slightly opposite to the associated impeller, whereby a good leadership is achieved. The solution according to the invention also avoids tilting of the joint cutter, since the axial distance between the impeller axes does not change or only slightly changes when the saw blade is raised.

Da bei der erfindungsgemäßen Lösung die Position des Sägeblatts zu dem Fahrwerkrahmen nicht verändert wird, kann das Sägeblatt mittels einer mechanischen Verbindung über den Motor, der für den Vorschub des verfahrbaren Fugenschneiders sorgt, angetrieben werden. Eine hiervon unabhängige bzw. zusätzliche Antriebsquelle für das Sägeblatt ist somit nicht notwendig.Since in the solution according to the invention, the position of the saw blade is not changed to the chassis frame, the saw blade can be driven by a mechanical connection via the motor, which provides for the advance of the movable joint cutter. An independent or additional drive source for the saw blade is thus not necessary.

Dadurch, dass im Unterschied zum Stand der Technik die Linearführungseinrichtung und die Hubeinrichtung zueinander achsparallel angeordnet sind und zudem zueinander achsparallel ein- und ausfahren, wird einerseits ein stabiles Anheben und Absenken des Fugenschneiders an dem Ende ermöglicht, an dem das Sägeblatt angeordnet ist, andererseits ist die Vorrichtung konstruktiv einfach und kostengünstig herstellbar.Characterized in that in contrast to the prior art, the linear guide device and the lifting device are arranged axially parallel to each other and also parallel to the axis and extend, on the one hand a stable raising and lowering of the joint cutter allows at the end to which the saw blade is arranged, on the other hand the device constructively simple and inexpensive to produce.

Grundsätzlich ist es vorstellbar, die Linearführungseinrichtung und die Hubeinrichtung miteinander zu kombinieren, so dass die Hubeinrichtung und die Linearführungseinrichtung als ein Teil ausgebildet sind. Es hat sich zur Erhöhung der Stabilität jedoch als vorteilhaft herausgestellt, wenn es sich bei der Linearführungseinrichtung und der Hubeinrichtung um separate Teile handelt.In principle, it is conceivable to combine the linear guide device and the lifting device with each other, so that the lifting device and the linear guide device are formed as one part. However, it has proven to be advantageous for increasing the stability when the linear guide device and the lifting device are separate parts.

Erfindungsgemäß kann vorgesehen sein, dass die Laufradachse nur über die Linearführungseinrichtung und gegebenenfalls die Hubeinrichtung an dem Fahrwerkrahmen festgelegt ist. Um die erfindungsgemäßen Vorteile zu erreichen, insbesondere eine geeignete Ein- und Ausfahrbewegung der Laufräder gegenüber dem Fahrwerkrahmen zu ermöglichen, ist explizit keine Befestigung der Laufradachse in der Art vorgesehen, wie dies beim Stand der Technik gemäß dem "Scherenprinzip" (siehe beispielsweise Figur 1 der DE 87 14 999 U ) der Fall ist. Das Ein- und Ausfahren der Laufradachse gegenüber dem Fahrwerkrahmen soll sich lediglich durch eine Linearbewegung der Linearführungseinrichtung bzw. der Hubeinrichtung ergeben.According to the invention it can be provided that the impeller axis is fixed to the chassis frame only via the linear guide device and optionally the lifting device. In order to achieve the advantages of the invention, in particular to allow a suitable entry and exit movement of the wheels relative to the chassis frame, explicitly no attachment of the impeller axis is provided in the manner as in the prior art according to the "scissors principle" (see, for example FIG. 1 of the DE 87 14 999 U ) the case is. The retraction and extension of the impeller axis relative to the chassis frame should only result from a linear movement of the linear guide device or the lifting device.

Beim Stand der Technik hat sich die Laufradachse von der Position am Fahrwerkrahmen entfernt, an der sich die Laufradachse in der Arbeitsstellung befindet. Die Laufradachse hat sich jedoch nicht von dem Fahrwerkrahmen entfernt, sondern ist lediglich entlang des Fahrwerkrahmens in Richtung auf die andere Laufachse (nach hinten) gewandert.In the prior art, the impeller axis has moved away from the position on the chassis frame at which the impeller axis is in the working position. However, the impeller has not removed from the chassis frame, but is only along the Chassis frame in the direction of the other barrel axis (to the rear) hiked.

Erfindungsgemäß kann vorgesehen sein, dass die Linearführungseinrichtung eine erste Linearführung umfasst, welche zwei koaxial zueinander angeordnete und verschiebbare Führungselemente aufweist. Bei den Führungselementen kann es sich dabei vorzugsweise um eine Führungssäule und um eine hierin bewegbare und stabil geführte Führungsstange handeln. Die Führungssäule kann dabei fest mit dem Fahrwerkrahmen verbunden sein, beispielsweise durch Schweißen oder Schrauben.According to the invention it can be provided that the linear guide device comprises a first linear guide, which has two coaxially arranged and displaceable guide elements. The guide elements may preferably be a guide column and a guide rod which is movable and stably guided therein. The guide column can be firmly connected to the chassis frame, for example by welding or screws.

Von Vorteil ist es, wenn die Linearführungseinrichtung wenigstens zwei, vorzugsweise genau zwei, Linearführungen aufweist. Die beiden Linearführungen können dabei identisch aufgebaut sein. Vorteilhaft ist es, wenn jeweils eine Linearführung an einem Ende der Laufradachse, d. h. vorzugsweise in dem Bereich, in dem die Laufräder an der Laufradachse angeordnet sind, befestigt sind.It is advantageous if the linear guide device has at least two, preferably exactly two, linear guides. The two linear guides can be constructed identically. It is advantageous if in each case a linear guide at one end of the impeller axis, d. H. preferably in the region in which the wheels are arranged on the impeller axis, are fixed.

Von Vorteil ist es, wenn die Hubeinrichtung als Hydraulikeinrichtung ausgebildet ist. Durch eine Ausgestaltung der Hubeinrichtung als Hydraulikeinrichtung ist es möglich, die Laufradachsen zuverlässig, gleichmäßig und kostengünstig ein- und auszufahren. Dabei kann die Hydraulikeinrichtung zwei Hydraulikelemente aufweisen, die zueinander koaxial angeordnet und ausfahrbar sind. Bei einem der Hydraulikelemente kann es sich dabei vorzugsweise um einen Hydraulikzylinder und bei dem anderen Hydraulikelement um einen in dem Zylinder bewegbaren Kolben handeln. Der Zylinder kann vorzugsweise an dem Fahrzeugrahmen und der Kolben an der Laufradachse befestigt sein. Vorstellbar ist es auch, den Hydraulikkolben (bzw. allgemeiner das Ende der Hubeinrichtung, welches von dem Fahrzeugrahmen nach unten ausfahrbar ist) an dem Ende der Linearführungseinrichtung festzulegen, welches an der Laufradachse befestigt ist. Die Hubeinrichtung ist somit nicht unmittelbar an der Laufradachachse befestigt, sondern greift über die Linearführungseinrichtung an dieser an.It is advantageous if the lifting device is designed as a hydraulic device. An embodiment of the lifting device as a hydraulic device, it is possible to reliably and uniformly and inexpensively on and extend the Laufradachsen. In this case, the hydraulic device may comprise two hydraulic elements arranged coaxially with each other and extendable are. One of the hydraulic elements may preferably be a hydraulic cylinder and the other hydraulic element may be a piston movable in the cylinder. The cylinder may preferably be fixed to the vehicle frame and the piston to the impeller axis. It is also conceivable to fix the hydraulic piston (or, more generally, the end of the lifting device, which can be extended downward from the vehicle frame) to the end of the linear guide device which is fastened to the wheel axle. The lifting device is thus not directly attached to the Laufradachachse, but engages on the linear guide device to this.

Alternativ zu einer Hydraulikeinrichtung kann die Ein- und Ausfahrbewegung der Hubeinrichtung auch über einen Motor, beispielsweise einen Elektromotor oder auf andere Weise, beispielsweise über eine Verzahnung und einen geeigneten Aktuator erfolgen.As an alternative to a hydraulic device, the retraction and extension movement of the lifting device can also take place via a motor, for example an electric motor or in another manner, for example via a gearing and a suitable actuator.

Grundsätzlich lässt sich die erfindungsgemäße Lösung unabhängig davon realisieren, ob für das Sägeblatt ein eigener Sägeblattmotor bzw. eine eigene Antriebsquelle vorgesehen ist, oder ob der Antrieb des Sägeblatts über einen für den Vorschub des Fugenschneiders vorgesehenen Antriebsmotor erfolgt. Die Erfindung eignet sich jedoch in besonderer Weise, wenn der Antrieb des Sägeblatts über einen zum Vorschub des Fugenschneiders vorgesehenen Antriebsmotor erfolgt. In diesem Fall kann der separate Sägeblattmotor für das Sägeblatt eingespart werden. Die Verbindung des Antriebsmotors mit dem Sägeblatt kann über eine geeignete mechanische Verbindung, vorzugsweise einen Keilriemen, erfolgen.In principle, the solution according to the invention can be realized independently of whether a separate saw blade motor or its own drive source is provided for the saw blade, or whether the drive of the saw blade takes place via a drive motor provided for advancing the joint cutter. However, the invention is particularly suitable if the drive of the saw blade on a feed to the joint cutter provided drive motor takes place. In this case, the separate saw blade motor for the saw blade can be saved. The connection of the drive motor with the saw blade can take place via a suitable mechanical connection, preferably a V-belt.

Von Bedeutung bei der erfindungsgemäßen Lösung ist es, dass sich im Unterschied zum Stand der Technik die Laufräder nunmehr durch eine im wesentlichen vertikale Bewegung bzw. eine Lineareinrichtung von dem Fahrzeugrahmen entfernen. Der Fahrzeugrahmen wird somit an dem Ende, an dem sich das Sägeblatt befindet, angehoben bzw. angesenkt, ohne dass sich die Laufradachse in horizontaler Richtung wesentlich vom Sägeblatt entfernt, insbesondere der Abstand zwischen den Laufradachsen nicht so verändert wird, dass hieraus Nachteile entstehen.Of importance in the inventive solution is that, in contrast to the prior art, the wheels now move away from the vehicle frame by a substantially vertical movement or a linear device. The vehicle frame is thus at the end at which the saw blade is raised or lowered, without the impeller axis in the horizontal direction substantially away from the saw blade, in particular the distance between the impeller axes is not changed so that there are disadvantages.

Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den weiteren abhängigen Ansprüchen. Nachfolgend ist ein Ausführungsbeispiel der Erfindung prinzipmäßig dargestellt.Advantageous embodiments and developments of the invention will become apparent from the other dependent claims. Hereinafter, an embodiment of the invention is shown in principle.

Es zeigt:It shows:

Fig. 1Fig. 1
eine perspektivische Darstellung eines erfindungsgemäßen Fugenschneiders in einer Ausgestaltung, bei der sich das Sägeblatt und die Laufradachse in einer Arbeitsstellung befinden;a perspective view of a joint cutter according to the invention in an embodiment in which the saw blade and the Impeller axis are in a working position;
Fig. 2Fig. 2
eine perspektivische Darstellung eines erfindungsgemäßen Fugenschneiders gemäß Fig. 1 in einer Ansicht, bei der das Sägeblatt angehoben und die Laufradachse gegenüber dem Fahrwerkrahmen ausgefahren ist;a perspective view of a joint cutter according to the invention Fig. 1 in a view in which the saw blade is raised and the wheel axis is extended relative to the chassis frame;
Fig. 3Fig. 3
eine Seitenansicht eines Fugenschneiders in einer Darstellung gemäß Fig. 1; unda side view of a joint cutter in a representation according to Fig. 1 ; and
Fig. 4Fig. 4
eine Seitenansicht eines Fugenschneiders in einer Darstellung gemäß Fig. 2.a side view of a joint cutter in a representation according to Fig. 2 ,

Fugenschneider sind aus dem allgemeinen Stand der Technik hinlänglich bekannt, wozu beispielsweise auf die DE 298 18 892 U1 , die DE 203 10 916 U1 und die DE 87 14 999 U verwiesen wird, weshalb nachfolgend nur auf die für die Erfindung wesentlichen Merkmale näher eingegangen wird.Joint cutters are well known from the general state of the art, for example, on the DE 298 18 892 U1 , the DE 203 10 916 U1 and the DE 87 14 999 U Reference will therefore be made below to the features essential to the invention.

Der erfindungsgemäße Fugenschneider eignet sich insbesondere zum Einbringen von Schnitten in Straßendecken oder dergleichen Flächen aus Asphalt, Beton oder vergleichbaren Werkstoffen.The joint cutter according to the invention is particularly suitable for introducing cuts in road surfaces or similar surfaces made of asphalt, concrete or similar materials.

Der erfindungsgemäße Fugenschneider weist einen Fahrwerkrahmen 1 auf mit jeweils zwei vorderen Laufrädern 2, die an einer vorderen Laufradachse 3 angeordnet sind, und zwei hinteren Laufrädern 4, die an einer hinteren Laufradachse 5 angeordnet sind. Auf dem Fahrwerkrahmen 1 ist in herkömmlicher Weise ein Antriebsmotor 6, z. B. ein Verbrennungsmotor, angeordnet. Der Antriebsmotor 6 und die notwendigen Antriebsverbindungen sind grundsätzlich bekannt, weshalb diese nachfolgend nicht näher beschrieben werden.The joint cutter according to the invention has a chassis frame 1, each with two front wheels 2, which are arranged on a front wheel axle 3, and two rear wheels 4, which are arranged on a rear wheel axle 5. On the chassis frame 1 is a drive motor 6, z. B. an internal combustion engine arranged. The drive motor 6 and the necessary drive connections are basically known, which is why they will not be described in detail below.

Der Antriebsmotor 6 sorgt im Ausführungsbeispiel für den notwendigen Vorschub des Fugenschneiders, treibt also eines oder mehrere der Laufräder 2, 4 an. Der Antriebsmotor 6 dient zudem dazu, eine Sägeeinrichtung 7 mit einem rotierenden Sägeblatt 8 anzutreiben. Die hierfür notwendigen mechanischen Verbindungselemente zwischen der Sägeeinrichtung 7 bzw. dem Sägeblatt 8 und dem Antriebsmotor 6 sind grundsätzlich bekannt und daher nachfolgend nicht näher beschrieben.The drive motor 6 provides in the exemplary embodiment for the necessary advance of the joint cutter, so it drives one or more of the wheels 2, 4 at. The drive motor 6 also serves to drive a sawing device 7 with a rotating saw blade 8. The necessary mechanical connecting elements between the sawing device 7 and the saw blade 8 and the drive motor 6 are basically known and therefore not described in detail below.

Die Sägeeinrichtung 7 und das Sägeblatt 8 sind hinsichtlich ihrer Position auf dem Fahrwerkrahmen 1 festgelegt, d. h. die Position der Sägeeinrichtung 7 und des Sägeblatts 8 ist unabhängig davon, ob das Sägeblatt 8 angehoben ist oder sich in der Arbeitsstellung befindet, gegenüber dem Fahrwerkrahmen 1 unverändert bzw. "starr". Dabei ist unter einer "starren" bzw. unveränderten Position des Sägeblatts gegenüber dem Fahrwerkrahmen 1 selbstverständlich zu verstehen, dass sich das Sägeblatt 8 und notwendige Teile der Sägeeinrichtung 7 gegenüber dem Fahrwerkrahmen 1 drehen. Gegebenenfalls kann auch vorgesehen sein, dass die Sägeeinrichtung 7 von einer Längsseite des Fahrwerkrahmens 1 zu einer anderen Längsseite verschwenkbar ist.The sawing device 7 and the saw blade 8 are fixed with respect to their position on the chassis frame 1, ie the position of the sawing device 7 and the saw blade 8 is independent of whether the saw blade 8 is raised or in the working position, compared to the chassis frame 1 unchanged or "rigid". In this case, a "rigid" or unchanged position of the saw blade relative to the chassis frame 1 is to be understood as meaning that the saw blade 8 and necessary parts of the sawing device Turn 7 opposite the chassis frame 1. Optionally, it can also be provided that the sawing device 7 is pivotable from one longitudinal side of the chassis frame 1 to another longitudinal side.

Im Rahmen der Erfindung ist unter einer "starren" bzw. unbeweglichen Befestigung der Sägeeinrichtung 7 bzw. des Sägeblatts 8 zu dem Fahrwerkrahmen 1 im wesentlichen zu verstehen, dass sich die Position der Sägeeinrichtung 7 bzw. des Sägeblatts 8 zu dem Fahrwerkrahmen 1 nicht verändert, wenn das Sägeblatt 8 aus seiner Arbeitsstellung in eine angehobene Position verschoben wird.In the context of the invention, a "rigid" or stationary attachment of the sawing device 7 or of the saw blade 8 to the chassis frame 1 essentially means that the position of the sawing device 7 or of the saw blade 8 does not change to the chassis frame 1, when the saw blade 8 is moved from its working position to a raised position.

Die Sägeeinrichtung 7 und das Sägeblatt 8 sind an einem vorderen Ende des Fahrwerkrahmens 1 angeordnet und zwar derart, dass das Sägeblatt 8 seitlich am Fahrwerkrahmen 1 im Bereich eines der vorderen Laufräder 2 angeordnet ist. Im Allgemeinen ist es vorteilhaft, wenn das Sägeblatt 8 an einem in Fahrtrichtung vorderen Ende des Fahrwerkrahmens 1 angeordnet ist.The sawing device 7 and the saw blade 8 are arranged at a front end of the chassis frame 1 in such a way that the saw blade 8 is arranged laterally on the chassis frame 1 in the region of one of the front wheels 2. In general, it is advantageous if the saw blade 8 is arranged at a front end in the direction of travel of the chassis frame 1.

Wie sich aus den Figuren 1 bis 4 ergibt, weist der erfindungsgemäße Fugenschneider eine Verstelleinrichtung 9 zum Anheben und Absenken des Sägeblatts 8 auf. Die Verstelleinrichtung 9 weist dabei eine mit dem Fahrwerkrahmen 1 verbundene Linearführungseinrichtung 10 auf, an deren einem Ende die dem Sägeblatt 8 zugeordnete Laufachse 3 festgelegt ist. Die Linearführungseinrichtung 10 ermöglicht ein im wesentlichen vertikales Ein- und Ausfahren der Laufradachse 3 gegenüber dem Fahrwerkrahmen 1. Ferner weist die Verstelleinrichtung 9 eine Hubeinrichtung 11 auf, die achsparallel zu der Linearführungseinrichtung 10 angeordnet ist und deren Hubelemente 12, 13 achsparallel zu der Linearführungseinrichtung 10 ein- und ausfahrbar sind.As is clear from the FIGS. 1 to 4 results, the inventive joint cutter on an adjusting device 9 for raising and lowering of the saw blade 8. The adjusting device 9 in this case has an associated with the chassis frame 1 linear guide device 10, at one end of the saw blade 8 associated barrel axis 3 is fixed. The linear guide device 10 allows a substantially vertical retraction and extension of the impeller axis 3 relative to the chassis frame 1. Further, the adjusting device 9, a lifting device 11 which is arranged axially parallel to the linear guide device 10 and the lifting elements 12, 13 axially parallel to the linear guide device 10 on and are extendable.

Im Ausführungsbeispiel ist vorgesehen, dass die Laufachse 3 nur bzw. ausschließlich über die Linearführungseinrichtung 10 und die Hubeinrichtung 11 mit dem Fahrwerkrahmen 1 verbunden ist. D. h. die Bewegung, die die Laufradachse 3 beim Ein- bzw. Ausfahren von dem Fahrwerkrahmen 1 durchführt, ist ausschließlich bedingt durch die Bewegung der Linearführungseinrichtung 10 und der Hubeinrichtung 11.In the exemplary embodiment, it is provided that the running axis 3 is connected to the chassis frame 1 only or exclusively via the linear guide device 10 and the lifting device 11. Ie. the movement that the impeller axis 3 performs during retraction or extension of the chassis frame 1, is exclusively due to the movement of the linear guide device 10 and the lifting device eleventh

Wie sich aus den Figuren 1 bis 4 ergibt, weist die Linearführungseinrichtung 10 eine erste Linearführung 14 und eine zweite Linearführung 15 auf. Wie sich insbesondere aus Fig. 2 ergibt, greift die Linearführung 14 an einem Ende der Laufradachse 3 und die zweite Linearführung 15 am anderen Ende der Laufradachse 3 an. Die erste und die zweite Linearführung 14, 15 sind identisch ausgebildet. Nachfolgend beschrieben wird daher nur der Aufbau der ersten Linearführung 14. Die erste Linearführung 14 weist zwei koaxial zueinander angeordnete und linear zueinander verschiebliche Führungselemente 16, 17 auf. Ein Führungselement ist dabei als Führungssäule 16 und das andere Führungselement als Führungsstange 17 ausgebildet. Die Führungssäule 16 ist fest bzw. unbeweglich mit dem Fahrwerkrahmen 1 verbunden, beispielsweise durch Verschrauben, Vernieten oder Verschweißen. Die Führungsstange 17 ist an dem Laufrad 3 befestigt. Die Führungsstange 17 ist in der Führungssäule 16 stabil und linear bzw. entlang der gemeinsamen Achse beweglich.As is clear from the FIGS. 1 to 4 results, the linear guide device 10 on a first linear guide 14 and a second linear guide 15. As can be seen in particular Fig. 2 results, the linear guide 14 engages at one end of the impeller axis 3 and the second linear guide 15 at the other end of the impeller axis 3 at. The first and the second linear guide 14, 15 are identical. The first linear guide 14 has two coaxially arranged and linearly displaceable guide elements 16, 17. A guide element is included as a guide pillar 16 and the other guide element as a guide rod 17 is formed. The guide column 16 is fixed or immovably connected to the chassis frame 1, for example by screwing, riveting or welding. The guide rod 17 is fixed to the impeller 3. The guide rod 17 is in the guide column 16 stable and linear or along the common axis movable.

Die Führungssäule 16 weist gegenüber der Führungsstange 17 eine geringere axiale Länge auf.The guide column 16 has over the guide rod 17 has a smaller axial length.

Alternativ zu einer Festlegung der Linearführungseinrichtung 10 an der Laufradachse 3 könnte auch eine Festlegung direkt an den vorderen Laufrädern 2 vorgesehen sein. Dies ist aus Stabilitätsgründen jedoch nicht vorteilhaft. Des weiteren bringt eine Anordnung der Linearführungseinrichtung 10 an der Laufradachse 3 den Vorteil, dass die Laufradachse 3 zu den Laufrädern 2 drehbar ist, d. h. die Laufradachse 3 kann eine ausgleichende Bewegung beim Anheben bzw. Absenken des Sägeblatts 8 ausführen, so wie dies in den Figuren 3 und 4 ersichtlich ist.Alternatively to a determination of the linear guide device 10 on the impeller axis 3, a definition could be provided directly to the front wheels 2. However, this is not advantageous for reasons of stability. Furthermore, an arrangement of the linear guide device 10 on the impeller axis 3 brings the advantage that the impeller axis 3 is rotatable to the wheels 2, ie the impeller axis 3 can perform a compensating movement when raising or lowering the saw blade 8, as in the FIGS. 3 and 4 is apparent.

Wie sich aus den Figuren 1 bis 4 ergibt, weist die Hubeinrichtung 11 zwei koaxial zueinander angeordnete und linear zueinander bewegbare Hubelemente 12, 13 auf. Die Hubeinrichtung ist dabei als Hydraulikeinrichtung 11 ausgebildet. Das Hubelement 12 stellt einen Zylinder dar, der im Ausführungsbeispiel fest mit dem Fahrwerkrahmen 1 verbunden ist, beispielsweise durch Verschrauben, Vernieten oder Verschweißen. Das Hubelement 13 ist als Kolben ausgebildet, der in dem Zylinder 12 in Abhängigkeit einer Beaufschlagung mit einem Hydraulikmedium (nicht näher dargestellt) verschiebbar ist. Der Kolben 13 ist an der Laufradachse 3 festgelegt. Im Ausführungsbeispiel ist der Kolben 13 in der Nähe einer der Linearführungen, im Ausführungsbeispiel der ersten Linearführung 14, festgelegt. Der Kolben 13 ist dabei derart mit einem Hydraulikmedium beaufschlagt, dass der Kolben 13 nach unten aus dem Fahrwerkrahmen 1 ausfährt, wenn dieser mit einem Hydraulikmedium beaufschlagt wird.As is clear from the FIGS. 1 to 4 shows, the lifting device 11 has two coaxially arranged and linearly movable to one another lifting elements 12, 13. The lifting device is designed as a hydraulic device 11. The lifting element 12 provides a Cylinder is, which is firmly connected in the embodiment with the chassis frame 1, for example by screwing, riveting or welding. The lifting element 13 is designed as a piston, which is in the cylinder 12 in response to an application of a hydraulic medium (not shown in detail) is displaceable. The piston 13 is fixed to the impeller axis 3. In the exemplary embodiment, the piston 13 in the vicinity of one of the linear guides, in the embodiment of the first linear guide 14, set. The piston 13 is acted upon in such a way with a hydraulic medium, that the piston 13 extends downwardly from the chassis frame 1, when it is acted upon by a hydraulic medium.

Grundsätzlich kann die Hubeinrichtung 11 auch mehrere Zylinder-Kolbeneinheiten aufweisen, die gegebenenfalls von einer oder mehreren Hydraulikeinrichtungen mit Hydraulikmedium versorgt werden.In principle, the lifting device 11 can also have a plurality of cylinder-piston units which are optionally supplied with hydraulic medium by one or more hydraulic devices.

Aus Übersichtlichkeitsgründen ist in der Seitenansicht gemäß Fig. 3 und Fig. 4 jeweils nur die Hubeinrichtung 11 und nicht gleichzeitig die Linearführungseinrichtungen 10 dargestellt.For reasons of clarity is in the side view according to FIG. 3 and FIG. 4 only the lifting device 11 and not simultaneously the linear guide devices 10 are shown.

Wie sich aus den Figuren 1 bis 4 ergibt, ist die Zylinder-Kolbeneinheit, welche die Hubeinrichtung 11 darstellt, und die erste und zweite Linearführung 14, 15, welche durch die Führungssäulen 16 und die Führungsstange 17 gebildet sind, achsparallel zueinander angeordnet bzw. ein- und ausfahrbar. Die Hubeinrichtung 11 sowie die erste und die zweite Linearführung 14, 15 durchdringen dabei den Fahrwerkrahmen 1 und sind im wesentlichen rechtwinklig zu dem Fahrwerksrahmen angeordnet bzw. ein- und ausfahrbar.As is clear from the FIGS. 1 to 4 is the cylinder-piston unit, which represents the lifting device 11, and the first and second linear guide 14, 15, which by the guide columns 16 and the guide rod 17 are formed, arranged axially parallel to one another or extendable and retractable. The lifting device 11 and the first and the second linear guide 14, 15 penetrate the chassis frame 1 and are arranged substantially at right angles to the chassis frame or retracted and extended.

Durch die Hubeinrichtung 11 wird die Laufradachse 3 bzw. werden die Laufräder 2 von dem Fahrwerkrahmen 1 entfernt. In der Praxis führt dies dazu, dass der Fahrwerkrahmen 1 gegenüber der Laufradachse 3 bzw. gegenüber den Laufrädern 2 angehoben wird.By the lifting device 11, the impeller axis 3 and the wheels 2 are removed from the chassis frame 1. In practice, this leads to that the chassis frame 1 is raised relative to the impeller axis 3 and against the wheels 2.

Claims (15)

  1. Mobile joint cutter, in particular for making cuts in road surfaces or similar surfaces made of asphalt, concrete or comparable construction materials, having a chassis frame (1) with running wheels (2, 4), having a sawing device (7), which has a rotating saw blade (8), which is arranged laterally on the chassis frame and is assigned to a running-wheel axle (3), and having an adjusting device (9) for raising and lowering the saw blade,
    characterized in that
    the adjusting device (9) has a linear-guidance device (10), which is connected to the chassis frame (1) and at one end of which is secured the running-wheel axle (3), which is assigned to the saw blade (8), wherein the linear-guidance device (10) allows the running-wheel axle (3) to retract and extend essentially vertically in relation to the chassis frame (1), and the adjusting device (9) has a lifting device (11), which is arranged axis-parallel to the linear-guidance device (10) and of which the lifting elements (12, 13) can be retracted and extended axis-parallel to the linear-guidance device (10).
  2. Mobile joint cutter according to Claim 1,
    characterized in that
    the running-wheel axle (3) is secured on the chassis frame (1) only via the linear-guidance device (10) and the lifting device (11).
  3. Mobile joint cutter according to Claim 1 or 2,
    characterized in that
    the linear-guidance device (10) comprises a first linear guide (14), which has two displaceable guide elements (16, 17) arranged coaxially in relation to one another.
  4. Mobile joint cutter according to Claim 3,
    characterized in that
    one guide element is designed in the form of a guide column (16) and the other guide element is designed in the form of a guide rod (17), which can be moved in the guide column (16).
  5. Mobile joint cutter according to Claim 4,
    characterized in that
    the guide column (16) is fastened on the chassis frame (1) and the guide rod (17) is fastened on the running-wheel axle (3).
  6. Mobile joint cutter according to one of Claims 3 to 5,
    characterized in that
    the linear-guidance device (10) comprises a second linear guide (15).
  7. Mobile joint cutter according to Claim 6,
    characterized in that
    the linear guides (14, 15) are fastened at opposite ends of the running-wheel axle (3).
  8. Mobile joint cutter according to one of Claims 1 to 7,
    characterized in that
    the lifting elements (12, 13) of the lifting device (11) are arranged, and can be displaced, coaxially in relation to one another.
  9. Mobile joint cutter according to one of Claims 1 to 8,
    characterized in that
    the lifting device (11) is designed in the form of a hydraulic device.
  10. Mobile joint cutter according to Claim 9,
    characterized in that
    one lifting element (12) is designed in the form of a cylinder and one lifting element (13) is designed in the form of a piston.
  11. Mobile joint cutter according to Claim 10,
    characterized in that
    the cylinder (12) is fastened on the chassis frame (1) and the piston (13) is fastened on the running-wheel axle (3).
  12. Mobile joint cutter according to one of Claims 9 to 11,
    characterized in that
    the hydraulic device (11) subjects the piston (13) to the action of a hydraulic medium such that the piston (13) extends downwards out of the cylinder (12).
  13. Mobile joint cutter according to one of Claims 1 to 12,
    characterized in that
    the saw blade (8) is driven via a drive motor (6) provided for advancing the joint cutter.
  14. Mobile joint cutter according to Claim 13,
    characterized in that
    the saw blade (8) is connected to the drive motor (6) via a V-belt.
  15. Mobile joint cutter according to one of Claims 1 to 14,
    characterized in that
    the saw blade (8) is secured in position on the chassis frame (1).
EP09164875.8A 2008-09-08 2009-07-08 Mobile joint cutter Active EP2161376B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200820011915 DE202008011915U1 (en) 2008-09-08 2008-09-08 Movable joint cutter

Publications (3)

Publication Number Publication Date
EP2161376A2 EP2161376A2 (en) 2010-03-10
EP2161376A3 EP2161376A3 (en) 2014-11-05
EP2161376B1 true EP2161376B1 (en) 2015-12-02

Family

ID=40076464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09164875.8A Active EP2161376B1 (en) 2008-09-08 2009-07-08 Mobile joint cutter

Country Status (2)

Country Link
EP (1) EP2161376B1 (en)
DE (1) DE202008011915U1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105401512B (en) * 2015-12-22 2017-09-26 湖南英格斯坦智能科技有限公司 Pavement cutting machine device people
CN107053488A (en) * 2017-05-17 2017-08-18 泉州市海恩德机电科技发展有限公司 A kind of removable and upset main axle structure
CN107938485B (en) * 2017-11-25 2020-08-11 易亮 Road surface cutting machine for highway construction
CN109049354B (en) * 2018-08-11 2020-06-12 武汉市城建工程有限公司 Concrete guardrail's fork transformation device
CN108894090B (en) * 2018-09-30 2020-09-25 广东恒大路桥建设有限公司 Road surface cutting machine for highway construction
CN110004830B (en) * 2019-03-11 2020-12-04 河北鸿森公路工程技术有限公司 Contraction joint cutting and sealing integrated device for bridge deck concrete
CN113981788A (en) * 2021-11-08 2022-01-28 张冰芳 Joint cutter for road and bridge construction and use method thereof
CN114790677A (en) * 2022-02-25 2022-07-26 张�浩 Road bridge is with horizontal joint-cutting device in road surface
CN115075110A (en) * 2022-07-01 2022-09-20 王昱 Pavement joint cutter capable of avoiding cutting dead angle
CN116163193B (en) * 2023-03-08 2024-01-16 连云港振江轨道交通设备有限公司 Rail self-propelled pavement cutting device with high cutting efficiency

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8714999U1 (en) 1987-11-11 1988-01-21 Lissmac Maschinenbau Gmbh, 7954 Bad Wurzach, De
DE4311778C2 (en) 1993-04-09 1995-05-04 Cedima Diamantwerkzeug Masch Movable floor saw
DE29818892U1 (en) 1998-10-23 1998-12-24 Lissmac Maschb & Diamantwerkz Movable floor saw
JP3371254B2 (en) * 2000-02-10 2003-01-27 志賀産業株式会社 Road surface cutter
DE20310916U1 (en) 2003-07-16 2003-09-25 Lissmac Maschb Und Diamantwerk Rotating cutter for smoothing or cutting road surface has a seat with two different positions and a transporting frame
US7487770B2 (en) * 2006-01-14 2009-02-10 Husqvarna Professional Outdoor Products Inc. Assist for raise lower mechanism for a concrete saw

Also Published As

Publication number Publication date
EP2161376A2 (en) 2010-03-10
EP2161376A3 (en) 2014-11-05
DE202008011915U1 (en) 2008-11-27

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