EP4509657B1 - Appareil de fraisage ou de coupe de joints doté d'une traction à embrayage magnétique et son procédé de commande - Google Patents

Appareil de fraisage ou de coupe de joints doté d'une traction à embrayage magnétique et son procédé de commande

Info

Publication number
EP4509657B1
EP4509657B1 EP24020266.3A EP24020266A EP4509657B1 EP 4509657 B1 EP4509657 B1 EP 4509657B1 EP 24020266 A EP24020266 A EP 24020266A EP 4509657 B1 EP4509657 B1 EP 4509657B1
Authority
EP
European Patent Office
Prior art keywords
milling
joint
cutting device
cutting
combustion engine
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
EP24020266.3A
Other languages
German (de)
English (en)
Other versions
EP4509657A1 (fr
Inventor
Jens Söllner
Nicolas Standfest
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP4509657A1 publication Critical patent/EP4509657A1/fr
Application granted granted Critical
Publication of EP4509657B1 publication Critical patent/EP4509657B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • 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
    • 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
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/02—Accessories specially adapted for use with machines or devices of the preceding groups for removing or laying dust, e.g. by spraying liquids; for cooling work
    • 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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/50—Methods or devices for preventing dust by spraying or sucking

Definitions

  • the invention relates to a joint milling or cutting device with a drive unit with magnetic clutch according to claim 1 and according to claim 14 a method for controlling it.
  • Joint cutting tools are generally operated at a higher speed than joint milling tools or have a larger diameter saw blade; they usually work in a straight line. With joint milling tools, the milling disc allows for both wide and narrow cutouts, which can be straight or curved as desired.
  • a joint milling or cutting device with a two-axle carriage is known.
  • the necessary equipment such as an internal combustion engine with a reduction gearbox for driving the milling disc or saw blade, and optionally a cooling water tank and/or vacuum cleaner, are arranged.
  • the device also includes a mechanism for adjusting the cutting depth of the milling disc or saw blade.
  • an adjusting lever is provided, which allows the wheel or both wheels of an axle to pivot relative to the carriage about a transverse axis fixed to the carriage.
  • a spring is suspended between the carriage and the adjusting lever and is dimensioned such that it lifts the carriage, and thus the milling disc or saw blade, upwards out of the joint.
  • a joint milling plow or brushing machine with a three-axle carriage which has drive wheels with a drive axle, a running wheel with a rigid axle, a swiveling steering wheel, and a tool, for example, a milling disc, arranged behind the wheels.
  • the milling disc can be guided along the cracks in the road surface under visual control, and the cutting depth of the tool is adjusted using the guide handles, with fine adjustment being made using the height-adjustable running wheel.
  • the drive wheels are arranged so that when the operator releases the guide handles, the carriage is tipped forward onto the running wheels and steering wheel by the greater weight of the engine. This lifts the drive wheels off the road surface, causing the machine to stop and allowing it to be moved back and forth more quickly by hand.
  • a hand-held device for milling pothole edges on asphalt surfaces and for milling off road markings is known.
  • two wheels are pivotally mounted on a chassis.
  • the two wheels are attached to a lever, which is mounted to the chassis via a joint and is pulled upwards by two springs attached elsewhere on the chassis.
  • the guide rod which is movably connected to the chassis, is pushed downwards, the milling drum is pressed into the asphalt.
  • the springs immediately lift the milling drum out of the asphalt.
  • the guide rod is connected to the lever arms by two levers via a joint.
  • the milling tool to which a gear is attached, is driven by a chain, which is driven by a reduction gear from a motor on the device. Replacing the wheels on the left or right side with larger wheels makes it possible to mill the asphalt at an angle.
  • a mobile joint cutter particularly for making cuts in road surfaces or similar surfaces made of asphalt, concrete, or comparable building materials, comprising a chassis frame with front and rear wheels, and at least one sawing unit comprising a rotating saw blade that can be lowered into the working position via an adjustment device, wherein the saw blade can be driven by a drive motor.
  • the front and rear wheels are steerable, with the steering movement being transmitted via a steering linkage connected to the wheels.
  • a dust extraction system for a crack milling machine in which the milling material is extracted immediately before and after the milling cutter by means of suction funnels and suction hoses.
  • the coarse milling material is collected in a suction container with a cyclone separator, and the remaining fine milling material is collected in a subsequent fine filter system with three flat filters arranged in series and a subsequent settling chamber for dust separation.
  • two suction hoses are arranged before and one suction hose after the milling cutter.
  • the entire extraction system is operated by three vacuum motors, and after completion of the milling work, the collected material is emptied from the suction container via an opening door.
  • the rear wheel Because at least one of the two rear wheels is also driven, even if the driven front wheel loses contact with the ground, the rear wheel continues to provide propulsion and feed for the machine. While it would be possible to achieve drive solely via one or both front wheels, thus significantly reducing the lever arm and torque, the forces generated during sawing, particularly when the saw blade enters the material being cut, excessive feed rate of the joint cutter, or uneven ground, cause the front wheels to lift off the ground, preventing power transmission. The closer the saw blade is to or between the two drive axles, the smaller the lever arm and therefore the resulting asymmetrical forces. Therefore, the axis of rotation of the saw blade will be positioned at least approximately in the vertical plane of the front axle.
  • the driven front wheel and the driven rear wheel are located on the same side of the chassis as the saw blade. This significantly reduces the lever arm, which, if the saw blade axis is positioned exactly in the vertical plane of the front axle, can theoretically become zero.
  • the saw blade can be pivoted 180° around a horizontal axis via a pivoting mechanism, with the pivot axis located at least approximately midway between the front and rear axles. With this pivoting mechanism, the saw blade remains on the same side of the chassis but is pivoted from its forward position to a rearward position, so that saw cuts can be made along the same travel path at both the front and rear edges without repositioning or reversing the joint cutter.
  • the swiveling device comprises a swivel arm, one end of which is articulated to the swivel axis, and the other end of which carries the saw blade with its drive elements. It is possible for the axis of the drive motor for the saw blade to be coaxial with the swivel axis of the saw blade, whereby The drive connection to the saw blade is made via V-belts or toothed belts with corresponding V-belt or toothed belt pulleys on the drive shaft of the drive motor and the axis of rotation of the saw blade.
  • the swivel arm is mounted on a flange that is positioned over the drive shaft of the drive motor for the saw blade.
  • a cost-effective, easy-to-use, and safe milling machine or joint cutter is known for seams, connections, and edge formation of asphalt pavements or notches in concrete slabs. It allows for easy plunging into the surface, even at high tool speeds, with preset positive or negative angle adjustments and control of the penetration depth, while largely minimizing dust generation and facilitating the disposal of fine dust.
  • Complete coverage/protective hoods for the cutting blades or milling disc and increased vacuum suction are standard features.
  • a two-stage cyclone extraction system is provided, arranged one above the other to save space.
  • this system comprises dry cutting is performed without dust spreading into the surrounding area.
  • the dust containers namely, the fine dust container and the air filter for the finest dust—are quick and easy to change using a simple lever mechanism.
  • the milling dust generated when cutting with diamond blades or carbide milling discs can be vacuumed up (protective hood and connected hoses) and discharged via the filter system, first through a heavy-particle separator and then through a paper filter, into a dust container/receptacle located inside the machine.
  • This container can be released from its locked position for emptying using the lever mechanism.
  • a side channel blower (with a discharge opening) is used instead of a fan, as is conventional. This increases the negative pressure of conventional systems from 0.15 bar to up to 0.4 bar, resulting in significantly higher suction power in conjunction with a protective hood consisting of a swiveling plate and cover. Furthermore, side channel blowers are considerably quieter than fans.
  • the cover is extendable, preferably designed with slats that can be moved over one another, so that the protective hood reaches almost to the surface.
  • a joint milling machine for milling butt joints between two adjacent floor slabs after installation is known.
  • a self-propelled drive is provided, which ensures the necessary contact pressure and thus the feed. This results in an ideally uniform load on the milling blade, whose service life can therefore be significantly increased.
  • a guide head is provided, which is guided ahead of the milling blade in the joint, so that the joint milling machine performs the milling process automatically after being placed on the floor.
  • the guide head is also able to automatically detect the connecting joint in the event of a lateral joint offset or to stop the joint milling machine if such a connecting joint is not found.
  • the guide head has a pendulum swivel arm, which carries a search wheel at the front end and a guide wheel on the opposite side.
  • the pendulum swivel arm is connected to a steering shaft, which is rotated in reverse by a specific angle. This ensures that when the guide head moves out of its previous position, it does not align itself with the existing joint.
  • the guide head, and thus the joint cutter as a whole is deflected from its previous direction and, as a rule, quickly engages the joint.
  • the search wheel first reaches the joint and engages with it.
  • the trailing guide wheel is then also moved towards the groove until it finally engages there.
  • the reversing rotation ensures that the guide head performs a search movement on both sides of the previous milling direction and finds the joint even if the guide head is initially moved to the side that does not have the joint.
  • Reversing the search movement is also necessary to prevent the joint cutter from drifting further out of its original milling direction. In the case of a joint offset, this is compensated for by the slightly curved arc of the guide head and cutter blade, created by the spaced arrangement of the guide head and cutter blade, to such an extent that it is no longer noticeable.
  • the joint milling machine has a support frame that houses a milling blade, the self-propelled drive, and the guide head.
  • the support frame has a rectangular footprint with a front cross member, two longitudinal cross members, and a rear cross member.
  • a motor mount is attached to the rear cross member, which holds a drive motor.
  • a carrying handle is attached to the support frame and the motor mount, allowing the joint milling machine to be lifted.
  • a release button is integrated into the front of the carrying handle, positioned close to the center of gravity of the joint milling machine, which interrupts the power supply when the machine is lifted.
  • the drive motor is coupled to a drive shaft via a gearbox.
  • the drive shaft is laterally supported in bearing blocks located at the rear of the longitudinal cross members.
  • Drive wheels arranged in a twin-gear configuration, are mounted on the drive shaft. Their axial position is chosen so that they run exactly symmetrically to the joint.
  • a support wheel is mounted opposite the drive shaft.
  • the support wheel is designed as a rotating support wheel, so that the feed is achieved exclusively via the two drive wheels.
  • the hubs of the drive wheels are designed as freewheel hubs, allowing the joint milling machine to be manually moved in the milling direction.
  • the running surfaces of the wheels are made of rubber with a low Shore hardness, ensuring secure traction on the floor plates. This increases operational safety.
  • a shut-off bar can be provided that extends forward beyond the joint milling machine and is coupled to a switch in such a way that the power supply is switched off and the joint milling machine is stopped when it encounters an obstacle.
  • a floor cutting device particularly one with a motorized drive and at least one front wheel and at least one rear wheel, is known.
  • a front section with the at least one front wheel is arranged at the front of the floor cutting device in the direction of travel
  • a rear section with the at least one rear wheel is arranged at the rear of the floor cutting device in the direction of travel.
  • Articulation means are provided between the front section and the rear section such that the front section and the rear section can be articulated relative to each other in a plane of travel of the floor cutting device.
  • At least one steering handle for manual steering of the floor cutting device by a person is provided on the rear section. This eliminates the need to lift the floor cutting device when changing its direction of travel. Steering is achieved by articulated axles or parts of the floor cutting device, which may be a rear axle or a front axle, with a corresponding steering effect between the front and rear wheels.
  • a guide carriage for a joint cutter with a motor-driven cutting wheel comprising a chassis with wheels by which the joint cutter can be guided precisely on a circle with a tight radius to cut a clean circular joint.
  • a push handle attached to the chassis and a mounting frame pivotably mounted on the chassis about its longitudinal axis are provided.
  • Means for attaching the joint cutter to the mounting frame are designed such that the axis of rotation of the cutting wheel runs transversely to the longitudinal axis of the mounting frame.
  • a device for adjusting the angular position of the mounting frame relative to the chassis is provided.
  • a road cutting machine with a rotating cutting wheel having a generally horizontal axis of rotation wherein the rotation of the cutting wheel is selectively controlled by a clutch either on the drive shaft of the motor or on a driven shaft of the cutting wheel, and wherein the clutch is activated by a deadman's switch.
  • the clutch is preferably an electromagnetic clutch mounted on the drive shaft of the motor and selectively activated by the deadman's switch on a handle of the machine, which is designed and arranged to close when an operator grasps the handle.
  • a pulley of the clutch rotates in sync with the drive shaft and transmits the torque from the motor via an endless flexible element to a driven shaft that carries the cutting wheel, thereby rotating the cutting wheel.
  • the clutch is de-energized or disengaged, thus decoupling the cutting wheel from the motor and allowing the machine to be safely left unattended with the motor running.
  • a weed milling machine In an area far removed from road construction, namely equipment for weed removal in joints or cracks of paved sidewalks or connecting joints, a weed milling machine from the DE900071U1
  • the device known as a weed cultivator, consists of a guide rod with an internal combustion engine mounted on top.
  • the engine's drive shaft powers a wire brush mounted horizontally at the lower end of the guide rod via a toothed belt drive.
  • the device is operated with both hands; one handle is attached to the top of the engine, and another, positioned transversely, is fixed to the guide rod.
  • the belt drive is enclosed by a protective tube that extends close to the wire brush.
  • the device can be pneumatically powered.
  • a pneumatic motor with a reduction gear is mounted laterally on the guide rod and, in turn, drives the wire brush, which is mounted horizontally at the lower end of the guide rod, via a belt drive.
  • the compressed air supply is provided by a construction compressor and can be shut off by a valve.
  • a standard electric drill can be used as the drive unit and is mounted in a housing on the guide rod.
  • the clamping device is attached to the clamping neck.
  • a vertical shaft, arranged parallel to the guide rod, is clamped into the drill spindle of the drill and supported at the bottom of the guide rod. This shaft drives the transversely mounted wire brush via a bevel gear stage.
  • Two support wheels are arranged on either side of the single shaft. The direction of rotation of the wire brush is chosen so that the wheels are pressed against the road surface. All devices are inclined at an acute angle to the road surface S; the penetration depth of the wire brush into the joints is determined by raising or lowering the guide rod.
  • a similar weed joint milling machine is from the EP 3 456 197 A1 known.
  • a transparent protective hood for a brush tool may be provided, the hood having a marking for the position of the brush disc and protecting the operator from material splashing out of the joint.
  • a motor unit has A housing is provided in which a drive motor is arranged, wherein the drive motor is, in particular, an electric motor. This results in a compact design, effectively protecting the drive motor and, in particular, a torque transmission device. It is advantageous if the torque transmission device comprises at least one of the following: a speed reducer; a right-angle gear for redirecting the torque; a torque transmission path for bridging a spatial distance.
  • the speed reducer allows the use of simple and cost-effective drive motors.
  • the transmission path comprises a belt drive.
  • Other types of transmission, such as gear drives or the like, are also possible.
  • a movable, in particular a pivotable, support device can be provided with a pivot axis at least approximately parallel to the axis of rotation of the at least one brush disc.
  • spring-loaded support is achieved via a pivot bearing.
  • the support device comprises a roller which is fixed to the motor unit via a holder.
  • Road construction involves building roads and paths from various materials such as asphalt, concrete, paving stones, large-format paving slabs, or unbound materials (e.g., gravel) (surface course and base course).
  • unbound materials e.g., gravel
  • Larger projects typically use a paver for asphalt roads and a concrete paver or slipform paver for concrete roads. Smaller construction projects and repairs are often carried out manually.
  • the drive systems use a metal friction wheel, which is pressed against the rubber tire by the operator.
  • climbing inclines is difficult; it requires dry conditions and the operator must assist by pulling. This is already a challenging task, and it becomes three times more difficult when the road or hill is wet. This is particularly significant because the road construction machinery industry is considered a progressive, innovation-driven industry that quickly adopts and implements improvements and simplifications.
  • Magnetic couplings in particular the electromagnetic coupling, the magnetic powder coupling, the magnetorheological fluid coupling and the contactless magnetic coupling, have been known for a long time (see, for example, the encyclopedia Wikipedia).
  • Permanent magnet couplings are state of the art in pumps and agitators today due to their contactless and leak-free torque transmission.
  • the single-disc dry clutch is mainly installed in motor vehicles to disconnect and connect the power flow between an engine and transmission during starting or gear changes, and to equalize the speed between the engine output and the transmission input.
  • the invention is based on the objective of further developing known mobile joint milling or cutting devices in such a way that the user is provided with an easy-to-handle device for asphalt and/or joint repair with reliable dust extraction during dry cutting, which is easy to operate, especially with one hand, and at the same time safe.
  • the joint milling or cutting device according to the invention and the method for controlling it have the advantage that safe one-handed operation of the device by the user is possible even under difficult ambient conditions and environmental influences.
  • the arrangement of only three wheels on the device achieves high maneuverability, so that, for example, cutting or milling all around an ⁇ 800 mm manhole cover is no problem.
  • Figs. 1 to 15 show an embodiment of a joint milling or cutting device F according to the invention.
  • the partial views according to Figs. 4 to 14 and Fig. 16 as well as by exploded view according to Fig. 15 The relationship between the parts of the device and their position is clarified, and the structure of the parts of device F can also be shown.
  • FIG. 1 and Fig. 2 Figures 1 show, in perspective view from the right and from the left, an embodiment of the joint milling or cutting device F according to the invention.
  • the joint milling or cutting device F shown in the drawing has a motor-driven milling disc or cutting blade and a self-propelled drive for dry cutting in surfaces.
  • a two-part, three-track chassis is provided, with the front part having a drive wheel 2a (see Fig. 1 , Fig. 2 , Fig. 3 , Fig. 11 and Fig. 12 ) and the rear part two wheels 8, 9 arranged coaxially at a distance from each other on an axle (see Fig. 1 , Fig. 2 , Fig. 3 , Fig. 6 ).
  • an internal combustion engine 7 is arranged above the axle of the wheels 8, 9, and an electric motor 6 with gearbox, connected to an accumulator (not shown in the drawing), is also provided.
  • a magnetic clutch 10 (see Fig. 12 The drive wheel 2a is coupled.
  • a rubber band on the drive wheel 2a is characterized by its high load-bearing capacity and durability, and provides excellent grip on the surface.
  • the magnetic coupling 10 is a friction coupling, preferably lapped in, and thus has approximately 90% of its power output. Since the joint milling or cutting device F operates at low speed, but the magnetic coupling 10 requires 100% power for milling/cutting, only a maximum power of 50% is available during operation. This is sufficient, however, because the electric motor 6 with gearbox has a power output of 14 Nm, and approximately 22 Nm is available at 50% power of the magnetic coupling. Preferably, a 24V electric motor 6 is provided for the drive.
  • a magnetic coupling 10 preferably a 12V or 24V magnetic coupling 10 is installed according to the invention.
  • This magnetic coupling 10 allows the drive to be easily switched on and off.
  • control electronics connected to the magnetic coupling 10 are provided for the slow acceleration and deceleration of the drive wheel 2a.
  • a guide rod 28 extending almost vertically is provided, which at its free end carries a horizontally extending steering rod 29 with two hand grips and attached actuating levers 1 for a hydraulic disc brake 1a and a dead man's switch 5 (see Fig. 4 and Fig. 4a
  • the front part is connected to the rear part of the chassis via a horizontally pivotable swivel joint 3 (see Fig. 11 and Fig. 12 ).
  • the joint milling or cutting device F has a cyclone separation device which comprises a coarse dust vortex cyclone 22 with an associated dust container 21 and a fine dust cyclone 25 with an internal fine filter (see Fig. 2
  • a coarse dust pre-filter 26 is arranged in the air intake tract of the combustion engine 7 in relation to its air filter (see Fig. 5
  • a fill level sensor 24 is arranged on the dust container 21 (see Fig. 13 ).
  • the joint milling or cutting device F has a battery (not shown in the drawing) and the combustion engine 7 charges it by means of a charging coil (not shown in the drawing).
  • the steering rod 29 carries a control device on which a potentiometer 2 for adjusting the milling speed is arranged (see Fig. 4 ) and furthermore, an operating and display device 23 is arranged on the rear part of the chassis (see Fig. 10 ) with a display for speed indication.
  • the operating and display device 23 has an operating hours counter 12, an emergency/stop button 13, a USB charging socket 14, LED flashing lights 15, a charging indicator light 18, an engine oil indicator light 19, an on/off switch 17 for the flashing lights 15 and a hand throttle potentiometer 16 for the speed of the internal combustion engine 7.
  • a manually operated depth adjustment 27 for a milling disc preferably designed as a diamond disc, is arranged at the rear of the chassis.
  • the internal combustion engine 7 drives a vacuum fan 30 (see Fig. 15 ).
  • the negative pressure fan 30 comprises a bearing block 31, a fan shaft 32, a vane fan 33, an intake nozzle 34 (flexible and made of PVC), a cone 35 (made of aluminum), and two spacer washers 36.
  • the cone 35 is positioned at the inlet of the housing such that, in conjunction with the vane fan 33, it generates an effective air vortex, thereby increasing the air volume and the resulting negative pressure.
  • the two spacer washers 36 clamp the Blade fan 33 and thus set it in rotational motion by means of the fan shaft 32.
  • Figure 1 shows a detailed design for a protective hood 46.
  • the protective hood 46 includes a polyurethane roller 48, screws 49 (preferably M8 screws) for depth limitation, a horsehair brush 50, and a visor 51 for optical alignment with the joint.
  • Fig. 16 shows in top view an embodiment for a hose connection as a locking system in the cyclone separator device according to Fig. 5
  • This hose connection preferably made of aluminum, is a maintenance-free solution and is easy to open and close.
  • the hose connection comprises a female coupling 40, a male plug 44, a lever 41, and a receptacle 42 for an operating aid 43, the operating aid 43 being secured in the receptacle 42 (hole) by means of a lever lock 52 (spring clip).
  • a lever lock 52 spring clip
  • the same process is repeated on the opposite end of the hose, and the hose connection, for example between a coarse dust vortex cyclone 22 and its associated dust container 21 or the fine dust cyclone 25, is easily disconnected.
  • the two ring-shaped receptacles 42 for the operating aids 43 are designed so that the operator can insert their index finger into them, thus making it easier to open the levers 41. Furthermore, this also serves as a secure storage location for the lever lock 52 (spring pin). If the hose accidentally slips out of the operator's hand and falls to the ground, no pipe sleeve will bend, no hose clamp will break, and no threads will be damaged.
  • the joint milling or cutting device F has, in particular, a 23 hp gasoline injection engine 7, wherein, in order to guarantee a longer service life of the combustion engine 7, the coarse dust pre-filter 26 is installed in the air intake tract of the combustion engine 7 in addition to the existing air filter. This ensures that the coarse dust particles are filtered out. Dust particles are captured in the coarse dust pre-filter 26, thus relieving the air filter (fine filter) of the combustion engine 7.
  • This combustion engine 7 is primarily used to accelerate the cutting shaft to approximately 6000 rpm at a gear ratio of 1:1.7. This speed is required to achieve a good cutting result with the carbide milling disc, preferably a diamond milling disc (not shown in the drawing).
  • a special solder improves the heat transfer from the cutting diamond to the tool body of the diamond milling disc, resulting in a longer service life.
  • St52-3 is used as the carrier material for the diamond milling discs.
  • Diamond segments are attached to the end face. These segments are welded on using a TIG copper/tin welding rod due to its excellent heat dissipation to the asphalt.
  • the combustion engine 7 also drives the vacuum fan 30 via a V-belt.
  • This fan 30 is required to generate the vacuum for suction in both cyclones and ensures that the cutting dust is extracted from the diamond disc.
  • a side channel blower (with a discharge opening) can be used instead of a vacuum fan 30. This increases the vacuum of conventional systems from 0.15 bar to up to 0.4 bar, resulting in a significantly higher suction performance in conjunction with the protective hood 46.
  • Dust is drawn from the protective hood 46, which is mounted above the diamond disc and extends to near the (road) surface by means of the horsehair brush 50, into the coarse dust vortex cyclone 22.
  • the horsehair brush 50 (for a tight seal between the asphalt and the protective cover) can be easily changed by the operator using a locking system.
  • the control electronics, preferably a program-controlled processor, of the joint milling or cutting device F according to the invention can automatically lower the protective hood 46 above the milling disc, which is designed as a diamond disc.
  • the operator only needs to set the desired height once. Set the protective cover to 46, then the desired setting will be made automatically each time.
  • the milling dust is sucked at high speed into the coarse dust vortex cyclone 22, where it encounters a 5 mm thick stainless steel (V2A) plate that prevents rapid wear of the cyclone.
  • the dust is then transported downwards in the vortex into the dust container/coarse dust bin 21.
  • the coarse dust particles remain in the dust container 21, while the finer particles are drawn into the fine dust cyclone 25 by the prevailing negative pressure, where they also encounter a 2 mm thick stainless steel (V2A) wear plate.
  • the finer particles are trapped by the fine filter and some fall onto the filter base.
  • the dust container/coarse dust bin 21 must be emptied after approximately 80 m of jointing, and the filter in the fine dust cyclone 25 should be tapped out every 160 m to 240 m. Care must be taken to tap the filter gently to avoid damaging the filter material.
  • the fan hose/hose connection is attached to the fine filter cover of the fine dust cyclone 25. All hose connections are designed with the locking system described above.
  • the combustion engine 7 has a third task: it supplies the battery/accumulator with sufficient power.
  • the 16A charging coil ensures an adequate power supply.
  • the battery/accumulator specifically a 12V/35Ah battery, is responsible for starting the internal combustion engine 7. Once the internal combustion engine 7 has started, the battery's primary function is to provide sufficient electrical energy for the drive system. The drive system is therefore dependent on the available electrical energy from the battery/accumulator. To start the drive system, the ignition on the internal combustion engine 7 must be switched on. Then, switch 4 on the control lever must be switched on, and potentiometer 2 must be in the "0" position. If the operator now activates the dead man's switch 5 with The lever that presses with one hand also acts as a safety device for the operator, allowing them to easily turn potentiometer 2 with the other hand until the machine reaches the desired speed.
  • the optimal cutting speed is achieved when the machine accelerates to approximately 3-4 m/min.
  • the operator can read this on the speed display. This speed reading is important to ensure a long service life for the tool, especially a diamond-tipped milling disc. If the cutting speed is set too high without proper control, the diamond disc will wear out much faster. Since this represents a significant cost factor, a distance meter 11a (see Fig. 12 ) and a distance display 11 (see Fig. 10 ) installed. Next to it is the digital operating hours counter 12. The operator thus always has one hand free for the required settings and changes to the joint milling or cutting device F according to the invention, thereby achieving optimal one-handed operation.
  • the drive system is preferably powered by a 24V brushed DC geared motor 6, with torque outputs of either 14 Nm or 27 Nm. This provides 100% traction and eliminates slippage. Both motors thus have sufficient power to effortlessly handle inclines exceeding 10%.
  • a magnetic clutch 10 is used to enable the machine to be pushed smoothly even when idling.
  • This magnetic clutch 10 has sufficient force to act as a parking brake when the combustion engine 7 is switched off.
  • the magnetic clutch 10 acts as an anti-lock brake when the operator releases the deadman's switch 5 for any reason.
  • the circuit is configured so that the deadman's switch 5 automatically interrupts the current flow to the brushed DC geared motor 6.
  • the odometer 11a is mounted inside the drive wheel 2a, which has a rubber band. This location was deliberately chosen to be so hidden in order to prevent mechanical damage from the outside.
  • a hydraulic disc brake 1a was installed.
  • This disc brake 1a is also capable of securely holding the device F on inclines and thus also functions as a mechanical parking brake.
  • a locking lever is engaged by means of the actuating lever 1, and the device F is therefore just as secure as with the electric parking brake/magnetic clutch 10, but has the advantage of not requiring any electricity. This is advantageous if the joint milling or cutting device F is left unattended for an extended period and the accumulator/battery could fail, causing the magnetic clutch 10 to lose power and the device F to roll uncontrollably.
  • LED flashing lights 15 are installed on four sides for maximum safety in the work area and are approved according to ECE standards. These LED flashing lights 15 can be switched on and off as needed.
  • the switch 17 for this is installed on the operating and display unit 23, as is the emergency stop button 13.
  • a USB charging socket 14 is installed.
  • the operator can easily charge their mobile phone here to always have sufficient battery power; this provides security even in the event of an emergency.
  • the power supply to the components of the joint milling or cutting device F according to the invention in particular the electric motor 6 (with gearbox), the ignition of the combustion engine 7, the magnetic clutch 10, the operating and display device 23, the USB charging socket 14, the LED flashing lights 15, the odometer 11a, the odometer 11, the digital hour meter 12, the charge indicator 18, the engine oil level indicator 19 of the combustion engine 7, the level sensor 24 and the control electronics/processor, is provided via flexible cables connected to the accumulator/battery.
  • the joint milling or cutting device F enables a Efficient and fast road repair with a significantly longer tool life. Compared to the state of the art in dry cutting, no dust or environmental pollution from fine dust is to be expected, and road surfaces with gradients of more than 10% can be milled without support and without slippage.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)

Claims (15)

  1. Un dispositif de fraisage ou de découpe (F) avec disque de fraisage ou lame de coupe motorisé et entraînement autopropulsé pour la découpe à sec de surfaces, comprenant:
    - un châssis à deux parties et trois chenilles, la partie avant comportant une roue motrice (2a) et la partie arrière deux roues coaxiales (8, 9) disposées sur un essieu;
    - un moteur à combustion interne (7) disposé dans la partie arrière, au-dessus de l'essieu des roues (8, 9);
    - un moteur électrique avec réducteur (6) alimenté par une batterie;
    - un embrayage magnétique (10) couplé au moteur électrique (6) et à la roue motrice (2a); et
    - une tige de guidage (28) s'étendant approximativement verticalement au-dessus de la roue motrice (2a), portant à son extrémité libre une barre de direction (29) s'étendant horizontalement et munie de deux poignées et de leviers de commande (1) pour un frein à disque hydraulique (1a) et un dispositif de sécurité (5).
  2. Le dispositif de fraisage ou de découpe selon la revendication 1, caractérisé en ce que la partie avant est reliée à la partie arrière du châssis par un joint pivotant horizontal (3).
  3. Le dispositif de fraisage ou de découpe selon une ou plusieurs des revendications 1 à 2, caractérisé en ce que le dispositif de fraisage ou de découpe conjoint (F) comporte un dispositif de séparation cyclonique comprenant un cyclone à vortex de poussière grossière (22) avec un conteneur à poussière associé (21) et un cyclone à poussière fine (25) avec un filtre fin interne et que le moteur à combustion (7) entraîne un ventilateur à pression négative (30).
  4. Le dispositif de fraisage ou de découpe selon une ou plusieurs des revendications 1 à 3, caractérisé en ce qu'un préfiltre à poussière grossière (26) est disposé dans le conduit d'admission d'air du moteur à combustion interne (7) par rapport à son filtre à air.
  5. Le dispositif de fraisage ou de découpe selon une ou plusieurs des revendications 1 à 4, caractérisé en ce que le moteur à combustion (7) charge l'accumulateur au moyen d'une bobine de charge.
  6. Le dispositif de fraisage ou de découpe selon une ou plusieurs des revendications 1 à 5, caractérisé en ce que la tige de direction (29) porte un dispositif de commande sur lequel est disposé un potentiomètre (2) pour régler la vitesse de fraisage et que le dispositif de fraisage ou de découpe conjoint comporte un dispositif de commande et d'affichage (23) disposé sur la partie arrière du châssis avec un affichage pour indiquer la vitesse.
  7. Le dispositif de fraisage ou de découpe selon la revendication 6, caractérisé en ce qu'un compteur de distance (11a) est disposé sur la roue d'entraînement (2a) et que le dispositif de commande et d'affichage (23) comporte un affichage de distance (11).
  8. Le dispositif de fraisage ou de découpe selon une ou plusieurs des revendications 6 à 7, caractérisé en ce que le dispositif de commande et d'affichage (23) comporte un compteur d'heures de fonctionnement (12), un bouton d'arrêt d'urgence (13), une prise de charge USB (14), des voyants clignotants à LED (15), un voyant de charge (18), un voyant d'huile moteur (19), un interrupteur marche/arrêt (17) pour les voyants clignotants (16) et un potentiomètre d'accélérateur manuel (16) pour la vitesse du moteur à combustion interne (7).
  9. Le dispositif de fraisage ou de découpe selon une ou plusieurs des revendications 1 à 8, caractérisé en ce qu'un réglage de profondeur à commande manuelle (27) pour le disque de fraisage est disposé sur la partie arrière du châssis, le disque de fraisage étant conçu comme un disque diamant.
  10. Le dispositif de fraisage ou de découpe selon une ou plusieurs des revendications 1 à 9, caractérisé en ce qu'un capteur de niveau de remplissage (24) est disposé sur le conteneur à poussière (21).
  11. Le dispositif de fraisage ou de découpe selon une ou plusieurs des revendications 1 à 10, caractérisé en ce qu'une électronique de commande connectée au couplage magnétique (10) est prévue pour démarrer et freiner lentement la roue motrice (2a).
  12. Le dispositif de fraisage ou de découpe selon 11, caractérisé en ce qu'il comporte le frein (1a) et le levier de commande manuel (1) à cet effet.
  13. Le dispositif de fraisage ou de découpe selon une ou plusieurs des revendications 1 à 12, caractérisé en ce qu'il comporte un capot de protection (46) et une visière (51) disposée sur le capot de protection (46).
  14. Un procédé de commande d'un dispositif de fraisage ou de découpe (F) comprenant un disque de fraisage ou une lame de coupe motorisés et un système d'entraînement autopropulsé pour la découpe à sec de surfaces, comprenant:
    • un châssis à deux parties et trois chenilles, la partie avant comportant une roue motrice (2a) et la partie arrière comportant deux roues (8, 9) coaxiales, espacées d'une certaine distance sur un essieu;
    • un moteur à combustion interne (7) disposé dans la partie arrière, au-dessus de l'essieu des roues (8, 9);
    • un moteur électrique avec réducteur (6) alimenté par une batterie ;
    • un embrayage magnétique (10) reliant le moteur électrique (6) à la roue motrice (2a); et
    • une tige de guidage (28) s'étendant approximativement verticalement au-dessus de la roue motrice (2a), et portant à son extrémité libre une biellette de direction (29) horizontale munie de deux poignées et leviers d'actionnement (1) pour un frein à disque hydraulique (1a) et un dispositif de sécurité (5), actionné par l'utilisateur comme suite:
    a) démarrage électrique du moteur à combustion (7),
    b) réglage du régime du moteur à combustion (7) à l'aide du potentiomètre d'accélérateur manuel (16),
    c) vérification de la position zéro du potentiomètre (2) de vitesse de fraisage,
    d) activation du dispositif de sécurité (5), rotation du potentiomètre (2) et vérification sur l'écran de l'atteinte de la vitesse de fraisage souhaitée,
    e) activation de l'interrupteur (4) d'entraînement de la roue motrice (2a),
    f) relâchement du dispositif de sécurité (5) pour arrêter le fraisage, coupant ainsi le moteur électrique (6) et enclenchant l'embrayage magnétique (10) comme frein,
    permettant ainsi l'utilisation d'une seule main du dispositif de fraisage ou de découpe (F).
  15. Le procédé selon la revendication 14, caractérisé par l'étape de procédé e1), en ce que l'utilisateur relâche un frein (1a) au moyen d'un levier d'actionnement (1).
EP24020266.3A 2023-08-13 2024-08-13 Appareil de fraisage ou de coupe de joints doté d'une traction à embrayage magnétique et son procédé de commande Active EP4509657B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102023003333.2A DE102023003333B3 (de) 2023-08-13 2023-08-13 Fugenfräß- oder Schneidgerät mit einem Fahrantrieb mit Magnetkupplung und Verfahren zu dessen Steuerung

Publications (2)

Publication Number Publication Date
EP4509657A1 EP4509657A1 (fr) 2025-02-19
EP4509657B1 true EP4509657B1 (fr) 2025-12-10

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EP24020266.3A Active EP4509657B1 (fr) 2023-08-13 2024-08-13 Appareil de fraisage ou de coupe de joints doté d'une traction à embrayage magnétique et son procédé de commande

Country Status (3)

Country Link
EP (1) EP4509657B1 (fr)
DE (1) DE102023003333B3 (fr)
PL (1) PL4509657T3 (fr)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE900071C (de) * 1942-10-18 1953-12-17 Hermann Kluftinger Dipl Ing Fasergutzufuehreinrichtung an Krempeln, Schlagmaschinen u. dgl.
DE3815640A1 (de) 1988-05-07 1989-11-16 Lissmac Maschinenbau Gmbh Verfahrbarer fugenschneider
DE9000710U1 (de) 1990-01-23 1990-03-29 Baumgärtner, Hans Vorrichtung zum Transportieren von Medien mittels thermisch isolierten Rohren
DE9103718U1 (de) 1991-03-26 1991-06-27 Rupprecht, Richard, 8560 Lauf Fugenfräs- oder -schneidgerät
DE9104602U1 (de) 1991-04-16 1991-06-13 Lissmac Maschinenbau und Diamantwerkzeuge GmbH, 7954 Bad Wurzach Verfahrbarer Fugenschneider
DE4408396A1 (de) 1994-03-12 1995-09-21 Mafu Gmbh Fugenfräse
DE29511771U1 (de) 1995-07-21 1995-12-07 Rupprecht, Richard, 91207 Lauf Fugenfräs-Fugenpflug oder Bürstgerät
US6102022A (en) * 1997-01-07 2000-08-15 Crafco, Incorporated Pavement cutting machine
DE29820188U1 (de) 1998-11-11 1999-01-07 Lissmac Maschinenbau und Diamantwerkzeuge GmbH, 88410 Bad Wurzach Fahrbarer Fugenschneider
DE29908397U1 (de) 1999-05-15 2000-09-21 Rupprecht, Richard, 91207 Lauf Asphaltfräse
DE20312712U1 (de) 2003-08-18 2003-11-06 Kresnik, Herbert, St. Stefan / Lavanttal Absaugvorrichtung für Rissefräse
DE10348481B3 (de) 2003-10-14 2005-03-10 Richard Rupprecht Fugenfräse auf Tretrollerbasis
DE102004050183B3 (de) 2003-10-14 2006-06-01 Richard Rupprecht Kombiniertes Fugenfräs- und Schleifgerät auf Tretrollerbasis
DE102013001715A1 (de) * 2013-02-01 2014-08-07 Lissmac Maschinenbau Gmbh "Bodentrennschleifvorrichtung insbesondere mit einem motorischen Fahrantrieb"
DE102016001290A1 (de) 2016-02-05 2017-08-10 Andreas Rupprecht Fahrbares Gerät zum Trocken- und Nassschnitt in Oberflächen mit Schnittwinkeleinstellung, Feinstaubabsaugung, Liftachse und Schwenkarm für Bedienpult
DE202016007446U1 (de) * 2016-12-07 2016-12-19 Erhard Beck Führungswagen für einen Fugenschneider
DE102017121154A1 (de) 2017-09-13 2019-03-14 Alfred Kärcher SE & Co. KG Unkraut-Fugenfräse

Also Published As

Publication number Publication date
DE102023003333B3 (de) 2024-11-07
EP4509657A1 (fr) 2025-02-19
PL4509657T3 (pl) 2026-04-20

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