EP4071302B1 - Fraiseuse autonome pour découper les sols - Google Patents

Fraiseuse autonome pour découper les sols Download PDF

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Publication number
EP4071302B1
EP4071302B1 EP22163953.7A EP22163953A EP4071302B1 EP 4071302 B1 EP4071302 B1 EP 4071302B1 EP 22163953 A EP22163953 A EP 22163953A EP 4071302 B1 EP4071302 B1 EP 4071302B1
Authority
EP
European Patent Office
Prior art keywords
milling machine
crankshaft
hydraulic
ground milling
hydraulic tank
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
EP22163953.7A
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German (de)
English (en)
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EP4071302A1 (fr
Inventor
Nils Muders
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.)
Bomag GmbH and Co OHG
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Bomag GmbH and Co OHG
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Filing date
Publication date
Priority claimed from DE102021118786.9A external-priority patent/DE102021118786A1/de
Application filed by Bomag GmbH and Co OHG filed Critical Bomag GmbH and Co OHG
Publication of EP4071302A1 publication Critical patent/EP4071302A1/fr
Application granted granted Critical
Publication of EP4071302B1 publication Critical patent/EP4071302B1/fr
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    • 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
    • E01C23/08—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 roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—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 roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums
    • 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
    • E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
    • 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
    • E01C23/12—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
    • 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
    • E01C23/12—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
    • E01C23/122—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus
    • E01C23/127—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 taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor with power-driven tools, e.g. oscillated hammer apparatus rotary, e.g. rotary hammers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/185—Arrangements or mounting of liquid-to-air heat-exchangers arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P2005/025—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers using two or more air pumps

Definitions

  • the invention relates to a self-propelled ground milling machine, in particular a road cold milling machine, a stabilizer or a recycler.
  • Generic ground milling machines in particular road cold milling machines, stabilizers or recyclers are, for example, from the DE102014008749A1 , DE102006062129A1 , DE102005044211A1 , EP1855899B1 and DE102014019168A1 known.
  • Such ground milling machines are often used in road and path construction and for subsoil stabilization.
  • Your working device is typically a milling device with, for example, a hollow-cylindrical milling drum that is equipped with a large number of milling tools on its outer lateral surface.
  • the milling drum is arranged inside a milling drum box that is open towards the ground.
  • the milling drum is set in rotation, usually about a horizontal axis of rotation running transversely to the forward direction of the ground milling machine, and is thereby lowered into the ground until a desired milling depth is reached.
  • the soil milling machine then moves in the forward or working direction and continues to mill soil material.
  • the ground to be processed or, for example, an asphalt surface of a road to be processed is broken up and crushed.
  • the resulting milled material is conveyed, for example, via a discharge belt either in or against the working direction of the floor milling machine onto a transport vehicle and transported away by it.
  • the floor milling machine usually includes a machine frame, which represents the main supporting structure of the floor milling machine. Furthermore, one or more front and rear travel devices are present, which can be connected to the machine frame via lifting devices, in particular lifting columns. All driving devices can be connected to the machine frame via lifting devices. To operate the ground milling machine, a control station is provided, which is usually arranged above the milling device.
  • Such a self-propelled ground milling machine is driven in particular via a primary drive unit, in particular a diesel internal combustion engine.
  • a primary drive unit in particular a diesel internal combustion engine.
  • this often drives numerous other consumers, such as one or more hydraulic pumps for supplying hydraulic actuators, such as in particular traction motors, actuators for side plates, for example, a scraper blade, a hold-down device, a drive motor for a conveyor belt, a steering actuator, actuators for the positioning of a transport conveyor belt, lifting devices connecting the machine frame with driving devices, etc.
  • hydraulic pumps for supplying hydraulic actuators, such as in particular traction motors, actuators for side plates, for example, a scraper blade, a hold-down device, a drive motor for a conveyor belt, a steering actuator, actuators for the positioning of a transport conveyor belt, lifting devices connecting the machine frame with driving devices, etc.
  • the pump transfer case is often connected to the crankshaft of the primary drive unit, for example with a clutch being interposed.
  • a floor milling machine of this type thus includes extensive components that are necessary for the operation of the floor milling machine and must be carried along with it. At the same time, it is desirable to make such a ground milling machine as compact as possible in order to be able to meet transport regulations more easily and to be able to offer the operator located on the operator's stand comparatively good visibility. With a compact design, ideally one or more of the aforementioned operating components should be easily accessible, ideally from outside the machine.
  • the invention relates to a self-propelled ground milling machine, in particular a road cold milling machine, stabilizer or recycler, comprising a milling device for milling the subsoil in a milling depth, a machine frame supported by front and rear travel devices, a primary drive unit arranged on the machine frame, in particular an internal combustion engine, and a hydraulic system with at least two hydraulic pumps, a pump transfer case and a hydraulic tank.
  • the ground milling machine also has a control station from which the self-propelled ground milling machine is operated.
  • the hydraulic tank is arranged at least partially in a vertical extension of the pump distributor gear above the pump distributor gear.
  • this means that the hydraulic tank is positioned so that it overlaps, viewed from the pump transfer case in the vertical direction.
  • the advantage of this arrangement is that the hydraulic tank is positioned very close to the hydraulic pumps arranged on the pump transfer case and the hydraulic fluid required to supply the at least two hydraulic pumps is therefore stored in practically the immediate vicinity of the hydraulic pumps. In this way, the length of the connecting paths or the hydraulic hoses and/or pipelines required for the tubing between the hydraulic tank and the individual hydraulic pumps can be significantly reduced.
  • the hydraulic tank is arranged essentially directly above the pump transfer case, particularly preferably only spatially separated by a part of a mounting frame, as explained in more detail below for a functional unit.
  • the hydraulic tank and also the pump distributor gear regularly have a smaller extension in the vertical direction. This makes it possible to arrange the pump distributor gear and the hydraulic tank stacked on top of one another in the vertical direction, with the package of pump distributor gear and hydraulic tank then preferably having a maximum vertical extent which essentially corresponds to the maximum vertical extent of the primary drive unit, in particular including supply lines, or is even smaller is.
  • the hydraulic tank is arranged completely in front of an engine block of the internal combustion engine in the axial direction of the crankshaft of the internal combustion engine, in particular on its main output side.
  • the hydraulic tank extends in the axial direction of the crankshaft above the crankshaft over the preferably complete pump transfer case and/or over a clutch and/or a drive roller of a traction drive.
  • the components mentioned are usually arranged in a row in the axial direction of the crankshaft and, overall, above them can represent an optimal accommodation space for the hydraulic tank with regard to the most compact overall structure possible.
  • the hydraulic tank can be at the same height in the axial direction of the crankshaft as at least one air filter, preferably at least two air filters, particularly one air filter each on both sides of the hydraulic tank.
  • the two air filters are ideally followed by a particularly V-shaped air merging system running towards the internal combustion engine.
  • the at least one air filter can be arranged relatively high in terms of its intake opening and at the same time relatively close to the primary drive unit in the ground milling machine.
  • the hydraulic tank is preferably arranged in the axial direction of the crankshaft at the level of several hydraulic pumps, in particular several tandem arrangements of hydraulic pumps.
  • at least two hydraulic pumps are connected in series in the axial direction one behind the other on a common connecting flange to the pump transfer case.
  • the hydraulic tank is now preferably designed in such a way that it extends at least partially, preferably completely, in the axial direction of the crankshaft over at least one, in particular several and very particularly over all hydraulic pumps flanged to the pump transfer case.
  • the hydraulic tank extends in the axial direction of the crankshaft completely above and, in relation to a virtual horizontal projection plane, within a drive train arranged in succession in the axial direction, comprising, preferably in this order, a clutch flanged to the internal combustion engine, a pump transfer case , a clutch and a drive roller of a traction mechanism.
  • These components can all be designed and arranged with a relatively small vertical height radially to the axial direction of the axis of rotation of the crankshaft, so that a sufficiently large and at the same time compact accommodation compartment for accommodating the hydraulic tank can be obtained.
  • Optimized arrangements of the hydraulic tank relative to other components are also possible with regard to the arrangement of individual components in a plan view of the axis of rotation of the crankshaft.
  • a V-shaped arrangement has proven to be particularly optimal.
  • provision can be made in particular for the axis of rotation of the crankshaft, at least two hydraulic pumps lying opposite one another as seen in the forward direction of the floor milling machine, and at least two air filters lying opposite one another to be arranged essentially in a V-shape, as seen in the axial direction of the crankshaft, with in particular in the two V-legs starting from the base point of the V-shaped arrangement formed by the axis of rotation of the crankshaft, there is in each case a hydraulic pump and in each case an air filter positioned above it in the vertical direction.
  • the two V-legs open up a free space in between, which is ideal for accommodating the hydraulic tank, especially in the middle.
  • An outstanding advantage of this specific arrangement lies in the fact that hydraulic pumps are positioned in the vertical direction below the hydraulic tank on both sides, horizontally offset to the axis of rotation of the crankshaft and in this way on the one hand a comparatively large number of hydraulic pumps with extremely short connection paths from the hydraulic tank to the individual hydraulic pumps is possible. In this level, the hydraulic tank sits directly above and in the middle of the pumps.
  • a further preferred development of the invention consists in that at least one air filter is arranged in front of and/or behind and/or next to the hydraulic tank in the longitudinal direction of the ground milling machine and/or horizontally and transversely to the axis of rotation of the crankshaft, the at least one air filter being in particular in a vertical extension a hydraulic pump arranged on the pump transfer case.
  • the air filter or filters are therefore ideally positioned at least partially in the vertical direction in the area of the hydraulic tank.
  • the hydraulic tank, at least two air filters, the pump transfer case and at least two hydraulic pumps can be arranged essentially symmetrically to one another, in particular simultaneously in a V-shape, in particular in relation to a mirror plane running vertically and along the axis of rotation of the crankshaft .
  • at least two hydraulic pumps arranged on the pump transfer case, at least one air filter positioned next to the hydraulic tank and the hydraulic tank can also be arranged above the axis of rotation of the crankshaft in relation to a horizontal reference plane.
  • the hydraulic tank is preferably mirror-symmetrical with respect to a vertical reference plane running along the axis of rotation of the crankshaft. This can make assembly easier.
  • a functional unit or a coherent construction module comprising the hydraulic tank, the pump transfer case and at least two hydraulic pumps as well as at least one air filter and preferably additionally at least one of the elements “coupling between the internal combustion engine and pump transfer case” and/or “Shifting clutch between pump transfer case and a traction drive roller” and/or “another air filter with air ducting to the combustion engine”, which is designed as a coherent preassembled assembly that can be moved separately from the combustion engine or can be mounted on it as a coherent assembly, in particular comprising a mounting frame that is independent of the machine frame.
  • the functional unit is to be understood in particular in the structural sense to the effect that this entirety is designed to be removable from the ground milling machine as a whole.
  • the assembly frame describes an inherently rigid support structure that allows the individual components mentioned to be preassembled and/or interchangeable in a stationary relative position to one another independently of the machine frame.
  • the functional unit is thus preferably designed in such a way that it can be removed as a whole from the ground milling machine and, in particular, has at least one separate connection device for System or intervention for an external lifting device.
  • a lifting device can be, for example, a forklift that lifts the functional unit or a crane device that pulls up the functional unit. This can facilitate the transport and/or the installation and removal of the functional unit on the ground milling machine.
  • a connection device for example designed in one piece with the mounting frame, is also present as part of the functional unit.
  • connection device is positioned and designed on the functional unit in such a way that the functional unit is essentially balanced in contact with the lifting device, in particular simultaneously when it is filled with operating fluids and when it is empty with regard to the operating fluids.
  • the machine frame can have a bearing mount for mounting the internal combustion engine and/or the functional unit and/or the pump transfer case. It is then preferred if the machine frame in the axial extension of the crankshaft away from the primary drive unit comprises a frame recess, in particular a frame tapering such that the upper side of the machine frame extends in the vertical direction below the internal combustion engine and/or the functional unit and/or the pump transfer case and/or the Clutch, in particular a clutch cover or clutch bell of the clutch, is lowered or deepened.
  • the frame recess facilitates assembly and maintenance work, since one or more of the aforementioned components can be moved or removed in the axial direction of the crankshaft across the frame through the frame recess in the axial direction.
  • the frame depression does not create a weak point in the machine frame at the same time.
  • the frame recess is formed on the upper side of the machine frame in the horizontal extension of the crankshaft in such a way that the machine frame is formed with a substantially constant cross-sectional profile in this area which is temporarily drawn downwards.
  • the frame recess forms a frame projection on the opposite underside of the machine frame.
  • the machine frame in the area of the frame recess in particular the frame narrowing, can also be designed in such a way that the underside runs horizontally in a straight line at the same height as the area of the machine frame adjoining the frame recess, in particular on both sides, and/or the machine frame has additional stabilization in the area of the frame recess, in particular thickening of the material.
  • the additional application of material in the area of the frame recess preferably leads to a transitional and vertical direction along the longitudinal extent of the machine frame decreasing material thickness of the machine frame and thus compensates for structural weaknesses associated with the deepening in this area.
  • a floor milling machine of the generic type has a cooling air duct with at least one of the features described in more detail below.
  • Significant heating phenomena can occur during use of such ground milling machines, for example naturally on the internal combustion engine, in the hydraulic oil circuit, etc.
  • Ground milling machines therefore typically include a cooling system with an engine cooling device and a hydraulic fluid cooling device.
  • the engine cooling device can have a first fan and a cooling circuit with an engine heat exchanger.
  • a cooling liquid, for example, is circulated in this cooling circuit, via which the internal combustion engine can be cooled during operation. The heat absorbed by the cooling liquid is given off to the air at the heat exchanger.
  • the hydraulic fluid cooling device can be set up in such a way that it enables the hydraulic fluid that heats up during operation to be cooled, again often also with the aid of a heat exchanger and a fan assigned to it.
  • One or more cooling air ducts can be present for cooling, which are designed in such a way that ambient air is sucked in from the outside environment by one or more fans and fed to the respective heat exchanger. The cooling air can also be sucked through an engine compartment.
  • the invention preferably provides for at least one suction fan to be present in the rear area of the floor milling machine, which is arranged in such a way that it blows heated cooling air out of the floor milling machine in an oblique direction upwards and backwards.
  • the heated cooling air is blown out in the rear area counter to the direction of travel, specifically diagonally upwards counter to the direction of travel.
  • figure 1 shows a ground milling machine 1 of the road cold milling machine type (central rotor milling machine) with a driver's platform 2 and a machine frame or chassis 3.
  • the ground milling machine 1 is self-propelled and has driving devices 6 for this purpose, for example chain drives or wheels.
  • driving devices 6 for this purpose, for example chain drives or wheels.
  • the ground milling machine 1 moves in the working direction a over the ground 7 to be processed.
  • the ground milling machine 1 mills the ground 7 to a milling depth with a milling drum 9 mounted in a milling drum box 8 so that it can rotate about the axis of rotation 10 on a milling device 20.
  • the removed milled material can, for example, be loaded onto a transport vehicle (not shown) and transported away by it via a discharge device 5, for example a transport conveyor belt, in the working direction a.
  • the floor milling machine 1 includes a drive train 13.
  • a cooling air supply is provided as part of a cooling system, which is designed in such a way that supply air 11 is supplied on the top of the floor milling machine 1 in a working direction a lying behind the control stand 2 of the ground milling machine 1 sucks.
  • the exhaust air 12 is blown out at the rear of the ground milling machine 1 arranged exhaust air openings against the working direction a to the rear and obliquely upwards (for example through corresponding guide vanes in the outlet area).
  • FIG. 2 An exemplary drive train 13 of the ground milling machine 1, in particular for a road cold milling machine, is shown in figure 2 shown roughly schematically. It comprises an internal combustion engine 14 as the primary drive unit, for example a diesel engine, the crankshaft of which rotates about the axis of rotation D. The crankshaft can be connected to a clutch 15 . A pump transfer case 16 can be connected to the clutch in the axial direction of the axis of rotation. A plurality of units 18, such as in particular one or more hydraulic pumps, also in a tandem arrangement, of a hydraulic system can be flanged onto distributor shafts of the pump distributor gear 16 and driven by the latter.
  • an internal combustion engine 14 as the primary drive unit, for example a diesel engine, the crankshaft of which rotates about the axis of rotation D.
  • the crankshaft can be connected to a clutch 15 .
  • a pump transfer case 16 can be connected to the clutch in the axial direction of the axis of rotation.
  • the hydraulic system can, for example, be designed in such a way that hydraulic motors are driven via hydraulic pumps, which are used, for example, to drive the running gear 6 or to drive the conveying device 5 of the ground milling machine 1 .
  • Other actuators such as linear actuators, can also be supplied with hydraulic drive energy in this way, for example for blade control of the milling device 20, for adjusting the conveyor device 5, etc.
  • All the hydraulic pumps required for the ground milling machine 1 can be coupled to the pump distributor gear 16 and supplied with energy by it.
  • a clutch 19 in the axial Direction of the axis of rotation which connect, which in turn is in drive connection with a drive roller 21 of a traction mechanism 22 driving the milling drum 9 .
  • the axis of rotation D can run parallel to the axis of rotation 10 of the milling drum and thus horizontally and perpendicularly to the forward direction a.
  • a hydraulic tank 23 which, as in figure 2 shown above the pump transfer case 16 and in the direction of the axis of rotation which is arranged between the internal combustion engine and the traction mechanism 22 .
  • the arrangement can also have two air filters 26 which are arranged at the level of the hydraulic tank 23 in front of and behind the hydraulic tank 23 as seen in the forward direction a.
  • feed lines 27 lead from the air filters 26, which according to the plan view figure 2 converge at the level of the internal combustion engine to form a common air supply line 28'.
  • FIG. 2 makes it clear that the hydraulic tank 23 extends with respect to its extent in the direction of the axis of rotation via the clutch 15, the pump transfer case 16 and the clutch 19. Furthermore, in a vertical top view, the hydraulic tank overlaps pumps 18, in particular all of the hydraulic pumps 18 connected to the pump transfer case 16.
  • FIGs 3 and 4 show a concrete design of the in figure 2 schematically indicated functional components of the drive system of the ground milling machine 1.
  • the pumps 18 are arranged on the right and left above the crankshaft and an air filter 26 is arranged above them.
  • the hydraulic tank 23 is arranged in the vertical direction above that of the pump transfer case 16 and the shifting clutch 19 in the free space between the two V-legs of this arrangement projecting from the axis of rotation D.
  • the hydraulic tank 23 does not protrude in the vertical direction from the internal combustion engine 14 including the supply lines.
  • FIG. 3 makes it clear that the hydraulic tank 23 is spatially positioned in the immediate vicinity of all pumps 18 arranged on the pump transfer case 16 . In this way, corresponding line connections between the hydraulic tank 23 and individual pumps can be designed to be very short.
  • figure 4 makes it clear that the functional unit 28 consisting of clutch 15, pump transfer case 16, clutch 19, traction roller 21, hydraulic tank 23 and air filters 26 is almost flush with the side boundary of the in figure 4 indicated machine frame 3 and even partially protrudes in this direction along the axis of rotation over the machine frame 3 in the axial direction. This makes possible optimal access to these components from outside the machine despite the overall compact arrangement.
  • the Figures 3 and 4 also illustrate the combination of the clutch 15, the pump distributor gear 16, the clutch 19, the traction pulley 21, the pumps 18, the air filter 26 and the hydraulic tank 23 to form a coherent functional unit 28 which, in particular via the clutch 15, can be flanged to the primary drive unit can.
  • This functional unit 28 or this functional module comprises an assembly frame 29 which, in particular in conjunction with the individual components, represents a supporting structure separate from the machine frame 3 and which enables the functional unit 28 to be pre-assembled.
  • the functional unit 28 can be replaced relatively easily as a whole on the ground milling machine 1 in this way.
  • the functional unit 28 includes strap-like connection devices 30, which in the present case can be formed by the mounting frame 29 or, for example, a housing of the pump distributor gear to 16.
  • a recess 31 shows an axial extension of the axis of rotation D in the machine frame 3.
  • the upper side of the machine frame 3 seen in the forward direction a is level with the clutch 15, the pump distributor gear 16 and/or the shift clutch 19 in the vertical direction V offset below that it is seen in the axial direction of the axis of rotation D overlap freely with these components.
  • the recess 31 is preferably lowered to such an extent that a free space is obtained in the vertical direction between the upper side of the machine frame 3 in this area and these components. This also makes it easier to access this part of the drive train from the outside.
  • a clutch bell of the clutch 19 can be easily pulled off along the axis of rotation without colliding with the machine frame 3 .
  • the machine frame 3 thus has a material taper in the vertical direction in this area, there are additional material thickenings 32 which span the depression 31 in the longitudinal direction of the machine frame 3 .
  • the extent of the thickening of the material in 32 essentially correlates to the respective extent of the recess 31 over the course of the recess 31 in the longitudinal extent of the machine frame 3, so that overall a constant carrying capacity across the recess is ensured.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Road Repair (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Road Paving Machines (AREA)

Claims (10)

  1. Machine (1) de fraisage du sol automotrice,
    en particulier fraiseuse routière à froid, stabilisateur ou recycleur, comprenant :
    - un dispositif (20) pour fraiser le sol (7) avec une profondeur de fraisage ;
    - un châssis (3) de machine supporté par des unités (6) de déplacement avant et arrière ;
    - une unité motrice primaire placée sur le châssis de la machine, en particulier un moteur (14) à combustion interne,
    - un système hydraulique ayant au moins deux pompes hydrauliques, une boîte de transfert pour les pompes et un réservoir hydraulique (23) ; et
    - une plateforme pour un opérateur ;
    caractérisée en ce que
    le réservoir hydraulique est placé, au moins en partie, dans une extension verticale de la boîte de transfert (16) des pompes au-dessus de la boîte de transfert des pompes.
  2. Machine (1) de fraisage du sol automotrice selon la revendication 1,
    caractérisée en ce que
    le réservoir hydraulique est installé selon au moins l'une des caractéristiques suivantes :
    - il est installé en totalité devant un bloc moteur du moteur à combustion interne, dans la direction axiale du vilebrequin du moteur à combustion interne ;
    - il s'étend dans la direction axiale du vilebrequin, au-dessus du vilebrequin, au-dessus de la boîte de transfert des pompes et d'un embrayage (19) et/ou d'un rouleau d'entraînement (21) d'un mécanisme de traction ;
    - il est installé dans la direction axiale du vilebrequin au même niveau qu'au moins un filtre à air (26), de manière préférée qu'au moins deux filtres à air, plus particulièrement qu'un filtre à air de chaque côté du réservoir hydraulique, les deux filtres à air étant idéalement réunis par un collecteur d'air, en particulier un collecteur d'air en forme de V, partant en direction du moteur à combustion interne ;
    - il est installé dans la direction axiale du vilebrequin au niveau de plusieurs pompes hydrauliques (18), en particulier plusieurs assemblages en tandem de pompes hydrauliques ;
    - il s'étend dans la direction axiale du vilebrequin en totalité dans un groupe motopropulseur installé séquentiellement dans la direction axiale et comprenant, de manière préférée dans cet ordre, un accouplement (15) relié par bride au moteur à combustion interne, une boîte de transfert (16) des pompes, un embrayage, et un rouleau d'entraînement d'un mécanisme de traction.
  3. Machine (1) de fraisage du sol automotrice selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    par rapport à l'axe de rotation (D) du vilebrequin, au moins deux pompes hydrauliques placées opposées l'une à l'autre et au moins deux filtres à air placés opposés l'un à l'autre sont disposés selon une forme essentiellement en V, comme vu dans la direction axiale du vilebrequin, dans laquelle, en particulier dans les deux branches du V, en partant du point de base de l'ensemble en forme de V formé par l'axe de rotation du vilebrequin, dans chaque cas une pompe hydraulique et dans chaque cas un filtre à air positionné au-dessus d'elle dans la direction verticale sont présents, le réservoir hydraulique (23) étant disposé entre les deux branches, en particulier de manière centrale.
  4. Machine (1) de fraisage du sol automotrice selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le réservoir hydraulique est installé selon au moins l'une des caractéristiques suivantes :
    - au moins un filtre à air est disposé en face de et/ou derrière et/ou à côté du réservoir hydraulique dans la direction longitudinale de la machine de fraisage du sol et/ou horizontalement et transversalement à l'axe de rotation du vilebrequin, ledit au moins un filtre à air étant positionné en particulier dans l'extension verticale d'une pompe hydraulique installée sur la boîte de transfert des pompes ;
    - le réservoir hydraulique, au moins deux filtres à air, la boîte de transfert (16) des pompes et au moins deux pompes hydrauliques (18) sont disposés de manière essentiellement symétrique les uns par rapport aux autres, en particulier par rapport à un plan de symétrie s'étendant verticalement et le long de l'axe de rotation du vilebrequin ;
    - au moins deux pompes hydrauliques disposées sur la boîte de transfert des pompes, au moins un filtre à air (26) positionné à côté du réservoir hydraulique, et le réservoir hydraulique (23) sont disposés au-dessus de l'axe de rotation du vilebrequin par rapport à un plan de référence horizontal.
  5. Machine (1) de fraisage du sol automotrice selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le réservoir hydraulique (23) est symétrique en miroir par rapport à un plan de référence vertical courant le long de l'axe de rotation du vilebrequin.
  6. Machine (1) de fraisage du sol automotrice selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    une unité fonctionnelle (28) comprenant le réservoir hydraulique, la boîte de transfert des pompes et au moins deux pompes hydrauliques ainsi qu'au moins un filtre à air et, de manière préférée, également au moins l'un des éléments suivants :
    - un accouplement entre le moteur à combustion interne et la boîte de transfert des pompes,
    - un embrayage entre la boîte de transfert des pompes et un rouleau d'entraînement,
    - un filtre à air supplémentaire avec un conduit d'acheminement de l'air vers le moteur à combustion interne,
    est configuré en un module de pré-assemblage cohérent, comprenant en particulier un cadre de montage indépendant du châssis de la machine.
  7. Machine (1) de fraisage du sol automotrice selon la revendication 6,
    caractérisée en ce que
    l'unité fonctionnelle (28) peut être retirée comme un tout de la machine de fraisage du sol et comprend en particulier au moins un dispositif de raccordement (30) qui lui est propre pour un contact ou un engagement avec un dispositif de levage externe, dans laquelle le dispositif de raccordement est, de manière préférée, positionné sur l'unité fonctionnelle de telle sorte que l'unité fonctionnelle soit essentiellement équilibrée avec le dispositif de levage, en particulier à la fois à l'état rempli avec des fluides de service et à l'état vide en ce qui concerne les fluides de service.
  8. Machine (1) de fraisage du sol automotrice selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le châssis de la machine comprend un logement de support pour supporter le moteur à combustion interne et/ou l'unité fonctionnelle et/ou la boîte de transfert des pompes, un renfoncement (31) pour le cadre, en particulier un rétrécissement, étant prévu dans une extension axiale de vilebrequin à distance du moteur à combustion interne, de façon que la face supérieure du châssis de la machine soit abaissé dans la direction verticale jusqu'au-dessous du moteur à combustion interne et/ou l'unité fonctionnelle et/ou la boîte de transfert des pompes et/ou un embrayage, en particulier un carter de l'embrayage.
  9. Machine (1) de fraisage du sol automotrice selon la revendication 8,
    caractérisée en ce que
    le châssis de la machine comprend au moins l'une des caractéristiques suivantes dans la zone du renfoncement du cadre, en particulier le rétrécissement du cadre :
    - la face inférieure court horizontalement selon une ligne droite à un même niveau que celui où la zone du châssis de la machine rejoint le renfoncement du cadre, en particulier sur les deux côtés ;
    - le châssis de la machine comprend une stabilisation supplémentaire (32), en particulier un épaississement de matière, dans la zone du renfoncement du cadre.
  10. Machine (1) de fraisage du sol automotrice selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    un conduit d'air de refroidissement ayant au moins l'une des caractéristiques suivantes est prévu :
    - il comprend au moins un ventilateur aspirant dans la zone arrière de la machine de fraisage du sol, qui est agencé de telle sorte qu'il souffle l'air de refroidissement réchauffé hors de la machine de fraisage du sol dans une direction oblique vers le haut et vers l'arrière ;
    - une sortie des gaz d'échappement est disposée en aval du ventilateur aspirant dans la direction de déplacement de telle sorte que les gaz d'échappement sortant de la sortie des gaz d'échappement soient envoyés directement dans le flux transportant l'air de refroidissement, une ouverture de sortie de la sortie des gaz d'échappement étant de manière préférée située dans la direction de déplacement de l'air de refroidissement au niveau d'une roue de ventilateur du ventilateur aspirant.
EP22163953.7A 2021-04-06 2022-03-23 Fraiseuse autonome pour découper les sols Active EP4071302B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021001760 2021-04-06
DE102021118786.9A DE102021118786A1 (de) 2021-04-06 2021-07-20 Selbstfahrende bodenfräsmaschine

Publications (2)

Publication Number Publication Date
EP4071302A1 EP4071302A1 (fr) 2022-10-12
EP4071302B1 true EP4071302B1 (fr) 2023-05-03

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EP22163953.7A Active EP4071302B1 (fr) 2021-04-06 2022-03-23 Fraiseuse autonome pour découper les sols

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US (1) US11939731B2 (fr)
EP (1) EP4071302B1 (fr)
CN (1) CN115198614A (fr)

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JP2000314151A (ja) * 1999-04-28 2000-11-14 Seirei Ind Co Ltd 旋回作業車
CN2620719Y (zh) 2003-06-18 2004-06-16 河南省高远公路养护技术有限公司 沥青路面侧向铣刨机
US7828309B2 (en) 2005-03-10 2010-11-09 Wirtgen Gmbh Road-building machine
DE102005044211A1 (de) 2005-09-12 2007-03-22 Wirtgen Gmbh Selbstfahrende Baumaschine, sowie Hubsäule für eine Baumaschine
JP4962935B2 (ja) * 2005-12-19 2012-06-27 株式会社小松製作所 建設車両
DE102006062129B4 (de) 2006-12-22 2010-08-05 Wirtgen Gmbh Straßenbaumaschine sowie Verfahren zur Messung der Frästiefe
DE102012022732B4 (de) 2012-11-21 2024-07-18 Bomag Gmbh Baumaschine mit einer Arbeitseinrichtung zur Bodenuntergrundbearbeitung und Verfahren zum Betrieb einer solchen Baumaschine
DE102013021919A1 (de) 2013-12-20 2015-06-25 Liebherr-Werk Ehingen Gmbh Kran
DE102014008749A1 (de) * 2014-06-12 2015-12-17 Bomag Gmbh Bodenfräsmaschine mit kühlsystem, kühlsystem und verfahren zur kühlung einer bodenfräsmaschine
DE102014011195B4 (de) * 2014-07-28 2018-09-13 Bomag Gmbh Bodenfräsmaschine mit von einem Wartungsmotor betriebenem Kompressor und Verfahren zum Betrieb einer solchen Bodenfräsmaschine
CN104903135B (zh) * 2014-08-19 2017-06-23 株式会社小松制作所 作业车辆
DE102014019168A1 (de) 2014-12-19 2016-06-23 Bomag Gmbh BAUMASCHINE, INSBESONDERE STRAßENFRÄSE, UND VERFAHREN ZUM AUSGLEICHEN VON BODENUNEBENHEITEN FÜR EINE SOLCHE BAUMASCHINE
CN108677670A (zh) * 2018-07-02 2018-10-19 江阴澄云机械有限公司 一种铣刨机
DE102019210644A1 (de) * 2019-07-18 2021-01-21 Wirtgen Gmbh Selbstfahrende Baumaschine und Verfahren zum Bearbeiten von Bodenbelägen
CN211689805U (zh) 2019-12-08 2020-10-16 张学松 一种沥青路面铣刨机
DE102021118787A1 (de) * 2021-04-06 2022-10-06 Bomag Gmbh Bodenfräsmaschine mit energieversorgungssystem, verfahren zum betrieb einer bodenfräsmaschine und verfahren zum nachrüsten einer bodenfräsmaschine

Also Published As

Publication number Publication date
EP4071302A1 (fr) 2022-10-12
US20220316155A1 (en) 2022-10-06
US11939731B2 (en) 2024-03-26
CN115198614A (zh) 2022-10-18

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