EP3092341A1 - Bodenverdichtungsbandage, walze mit einer solchen bodenverdichtungsbandage, schwingungserregungseinrichtung für eine bodenverdichtungsbandage und verfahren zur bodenverdichtung - Google Patents
Bodenverdichtungsbandage, walze mit einer solchen bodenverdichtungsbandage, schwingungserregungseinrichtung für eine bodenverdichtungsbandage und verfahren zur bodenverdichtungInfo
- Publication number
- EP3092341A1 EP3092341A1 EP14824367.8A EP14824367A EP3092341A1 EP 3092341 A1 EP3092341 A1 EP 3092341A1 EP 14824367 A EP14824367 A EP 14824367A EP 3092341 A1 EP3092341 A1 EP 3092341A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bandage
- soil compaction
- roller
- vibration excitation
- rotation
- 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.)
- Granted
Links
- 239000002689 soil Substances 0.000 title claims abstract description 177
- 238000005056 compaction Methods 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims description 9
- 230000033001 locomotion Effects 0.000 claims abstract description 7
- 230000005284 excitation Effects 0.000 claims description 97
- 238000013016 damping Methods 0.000 claims description 96
- 239000010687 lubricating oil Substances 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000005461 lubrication Methods 0.000 claims description 16
- 239000003921 oil Substances 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 5
- 239000002775 capsule Substances 0.000 claims description 4
- 239000010426 asphalt Substances 0.000 claims description 3
- 239000010724 circulating oil Substances 0.000 claims 2
- 238000007906 compression Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000029305 taxis Effects 0.000 description 1
- 238000001845 vibrational spectrum Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
- E01C19/286—Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll
Definitions
- the invention relates to a soil compacting bandage, a roller, in particular a tandem roller, with at least one such soil compaction bandage as well as a vibration-generating device for such a soil compacting bandage.
- the invention further relates to a method for soil compaction with a roller having two soil compaction drums.
- a generic soil compacting bandage is a substantially hollow cylindrical body, which is also referred to below as a bandage casing.
- the bandage casing at least partially surrounds a bandage interior, which is thus the hollow cylinder interior, which is limited in the radial direction to the cylinder axis by the bandages coat and extending in the direction of the cylinder axis on both sides each to a plane which is transverse to the cylinder axis and in which lies the front side of the bandage mantle.
- a vibration-generating device is arranged in the bandage interior, with the aid of which the soil compaction bandage can be set into vibration.
- the vibration excitation device comprises at least one imbalance shaft guided circumferentially around a rotation axis with an imbalance, wherein the rotational movement of the imbalance shaft about its axis of rotation can be driven by a drive device.
- the axis of rotation thus denotes the axis of rotation of the imbalance shaft with its imbalance.
- the portion of the bandage interior, in which the vibration excitation device is located, is the rest of the bandage interior by two transverse to the cylinder axis of the bandage casing and separated along this cylinder axis spaced disc plates.
- Bearing elements and parts of the drive train for the soil compacting bandage and / or the vibration excitation device can be guided through openings of the plate discs.
- the cup wheels usually serve as a fastening device for the hydrostatic drive and for receiving the vibration excitation device and as a conclusion of the soil compacting bandage.
- such soil compacting bandages are used, for example, in rollers for underground compaction, especially of asphalt and soil.
- vibration excitation means vibrations, in particular in the vertical direction, can be generated, thus enabling an active compression process.
- the imbalance shafts are horizontal in the vast majority of known devices, so that vibrations can be introduced at least partially in the vertical direction on the bandage in the ground.
- US 2012/01 14416 A1 a soil compacting bandage is also known, in which the vibration excitation means comprises two juxtaposed unbalanced shafts whose axes of rotation extend in the vertical direction.
- the object of the invention is therefore to provide a soil compaction bandage and a method for soil compaction, which allows a simple structure and at the same time a gentle soil subsurface compression.
- An essential aspect of the invention is to provide a soil compacting bandage, the vibration excitation means is arranged in the manner in the bandage interior, that the axis of rotation runs exactly one unbalanced shaft vertically. According to the invention is thus exactly, in particular exclusively, provided a vertical exciter in the compression bandage. By aligning exactly one imbalance shaft in the vertical direction, the imbalance thus rotates in a horizontal plane, so that the vibration excitation device is designed to generate oscillations lying in the horizontal plane. At the same time, the structure of this basic arrangement is comparatively simple and therefore cost-effective, since only one and not more than one vertically extending imbalance shafts are present.
- vibration excitation devices are also included according to the invention which, in addition to the exactly one unbalanced shaft extending in the vertical direction, comprise further unbalanced shafts extending in other spatial directions, in particular horizontally and further in particular transversely to the working direction of the soil compacting drum. It is crucial that in relation to the vertical exciter only one in the soil compaction bandage is provided. It has been found that a vibration spectrum of the soil compaction bandage can be realized with this arrangement, on the excellent soil compaction results, especially with regard to a gentle soil compaction and the soil density to be achieved, can be achieved. At the same time the design effort for the integration of only one vertical exciter in the interior of the bandage casing is comparatively low.
- the vibration excitation device in the bandage interior can be used on a variety of different design alternatives.
- a suitable bearing arrangement is ideally provided for this purpose, which enables reliable mounting of the vibration excitation device in the bandage interior with aligned in the vertical direction of rotation of the vertical exciter and at the same time a rotatability of the bandage jacket relative to the vertical exciter about a horizontal axis.
- the vibration excitation means is arranged on the bearing assembly in the manner in the bandage interior, that the bandage casing is rotatable relative to the vibration excitation means and the vertical axis of rotation of an imbalance shaft in its rotation around a horizontal axis of rotation drum casing retains its orientation.
- the bearing assembly is thus formed on the one hand in such a way that the bandage casing is relatively movable relative to the vibration excitation device.
- the bearing assembly is preferably designed to allow continuous maintenance of the vertical orientation of the axis of rotation of the one imbalance shaft.
- the bearing arrangement is also designed such that deviating orientations of the vibration excitation device depend on the orientation of the vertically extending axis of rotation of the one imbalance shaft, in particular in the assembled state of the ground shaft. compression bandage, are not possible, whereby the overall construction can be simplified again.
- a vertically extending imbalance shaft of the vibration generating device is part of a circular exciter.
- a circular exciter is understood as meaning a vibration exciter which triggers a vibration amplitude circulating about the axis of rotation.
- Essential elements of such a circular exciter are an exciter or imbalance shaft with an imbalance and a drive device or a connection possibility to a drive device. Since the axis of rotation of an unbalanced shaft is vertical, the circular pathogen thus develops vibrations in the horizontal plane during operation.
- Circular exciters in particular simple design, can be produced relatively inexpensively and are characterized by a high operational reliability.
- Essential parameters which influence the oscillation amplitude of the oscillation excitation device are in particular the revolution frequency and the mass of the imbalance. Depending on the application, different speeds may be desired and / or different imbalance masses or mass distributions.
- the imbalance of an imbalance shaft is formed in two parts, wherein the relative position of the two imbalance parts about the rotational axis of the imbalance shaft relative to each other, in particular two-stage or continuously, is adjustable.
- the imbalance thus has a first imbalance part and a second imbalance part, wherein in particular the first imbalance part is fixedly connected to the imbalance shaft and the second imbalance part to relatively movable.
- the imbalance distribution on the imbalance shaft in particular in the plane transverse to the rotation axis, can be varied, whereby an amplitude variability is achieved.
- Two-stage adjustment options i. Such adjustment possibilities, in which the two imbalance parts can assume two end positions relative to one another, are obtained in particular by so-called envelope weights, as are known in the prior art.
- a stepless adjustment means that the angular position of the two imbalance parts in the plane transverse to the axis of rotation in a certain angular range is continuously variable, for example via a suitable adjusting.
- the vibration excitation device is arranged in the bandage interior. Basically, the entire circumference of the bandage interior can be used here. It has now proven to be ideal to arrange the vibration excitation device in the interior of the bandage in such a way that the axis of rotation of the one imbalance shaft perpendicularly intersects the axis of rotation of the soil compaction bandage. det.
- the axis of rotation of the soil compaction bandage is that axis about which the soil compacting bandage rotates during the movement operation. In other words, the axis of rotation is the cylinder axis of the bandage casing.
- the vibration device is arranged in such a way that the axis of rotation of the one imbalance shaft is equally spaced on both faces of the bandage sheath in the axial direction of the axis of rotation.
- the axial direction denotes a direction that runs along the axis of rotation of the bandage casing or the soil compacting bandage.
- the imbalance shaft of the vertical exciter is thus arranged in the middle.
- the vibration excitation device is arranged in such a way that the axis of rotation of the one imbalance shaft passes through the center of gravity of the bandage.
- the center of the bandage refers to the center of mass of the soil compaction bandage. It is furthermore particularly preferred if the center of gravity of the bandage lies on the axis of rotation of the soil compacting bandage. In this case, the center of gravity of the bandage therefore lies in particular at the point of intersection of the axis of rotation of the soil compaction bandage and the axis of rotation of the one imbalance shaft. In this embodiment, a particularly uniform and thus gentle vibration transmission is realized on the ground.
- the vibration excitation means comprises a drive shaft which is arranged vertically and is connected at one end, in particular at its upper end, with the drive means.
- the drive shaft of the vibration excitation device designates a shaft via which drive energy is introduced into the vibration excitation device.
- the drive shaft may be the one unbalanced shaft itself.
- the drive device is now arranged within the bandage interior, in which case a recourse can be made in particular to a hydraulic motor or electric motor connected directly to the drive shaft and in particular to the imbalance shaft. In this way, a very compact and in view of the small amount of space available preferred structure is obtained.
- a drive gear may also be present, which is designed in such a way that it provides drive energy provided by the drive device into the drive shaft. le transfers.
- a transmission is thus interposed between the drive device and the drive or imbalance shaft, so that the drive device and the drive shaft are indirectly in operative connection with each other.
- the drive device is arranged at a distance from the drive shaft, for example outside the bandage interior or outside the portion of the bandage interior surrounded by the ring washers.
- belt drives, chain transmissions or toothed gearing or comparable transmissions can be used here, for example, whereby in particular the use of transmissions arranged essentially in a horizontal plane is preferred.
- the drive gear is formed as part of the soil compacting bandage for connection to a arranged outside the disc discs and / or outside of the soil compacting drum drive device.
- This may be, for example, the drive motor of a superordinate construction machine, in particular a roller with such a soil compaction bandage.
- This facilitates the change of soil compaction bandage, since in this way the drive gear does not necessarily have to be removed when replacing the soil compaction bandage from the respective soil compaction bandage. In this way a faster exchange is possible.
- everything outside the disc discs is understood to mean anything that does not lie between the two disc discs of the soil compacting bandage. Outside of the plate discs is thus that portion of the bandage interior, which is located outside the axis of rotation of the soil compacting bandage or transversely to the working direction of the roller outside of the limited by the disc plates portion of the bandage interior.
- this is preferably encapsulated and includes a capsule housing, in the interior of which at least the unbalance and imbalance wave is arranged.
- the capsule housing thus encloses essential elements of the vibration excitation device.
- areas to be lubricated during operation hereinafter also referred to as lubrication points, the vibration excitation means are arranged within the capsule housing.
- a lubrication point refers to a point of the vibration excitation device in which a lubrication between two mutually movable parts is required, as is the case for example in bearings and / or with movable transmission elements. Typical lubrication points are therefore present in particular, for example, bearings, especially for rotating elements, such as the imbalance shaft.
- a so-called oil circulation lubrication is preferably provided.
- An oil circulation lubrication is present when a lubricating oil circuit can be maintained by circulating within the Schwingungserregungsein direction lubricating oil.
- the oil circulation lubrication in particular a pump, especially centrifugal pump includes, which promotes in rotational operations of vibration excitation lubricant oil from an oil sump to lubrication points of the vibration excitation device, in particular to lubrication points of a Umwuchtwelle.
- a centrifugal pump refers to a pump whose driving force is the centrifugal force.
- the centrifugal pump is designed in particular in such a way that the centrifugal forces occurring in the rotational operation of the imbalance shaft drive the centrifugal pump or its conveying effect.
- the oil sump refers to a type of reservoir in which lubricating oil draining from the lubrication points and the remaining region of the vibration excitation device is collected. It is ideal if the oil circulating lubrication comprises a supply line running at least partially within the one imbalance shaft of the vibration excitation device and conducting lubricating oil at least partially in the vertical direction.
- the accommodation within the one unbalanced shaft, which is in particular at least partially a hollow shaft, is extremely space-saving and also allows in particular an implementation of the principle centrifugal pump.
- the lubricating oil outlet of the supply line is designed to be directed outwards, in particular in the radial direction, and the riser part of the supply line is arranged more towards the axis of rotation.
- the present soil compaction bandage makes it possible, by virtue of the inventive construction of the vibration excitation device, to act on the soil compaction bandage with vibrations acting in the horizontal plane.
- the outer edges of the bandage casing are preferably rounded outwards in the direction of the axis of rotation of the soil compacting bandage.
- the bandage coat on its front sides on a rounded, in section along the longitudinal axis convex, bandage profile and no sharp, right-angled outer edge.
- the rounding extends in particular in a range related to the width of the soil compacting bandage of> 1%, in particular> 2%, and especially> 5% to the respective end face the soil compacting bandage.
- the soil compaction bandage thus deviates from a course of the outer jacket surface with uniform and constant radial distance along the axis of rotation and rather has a decreasing in the direction of the end face outer circumference.
- the rounding course does not necessarily have to run along a segment of a circular path, but can also be adapted, for example, to the course of an elliptical path or to a segmented path. It is essential that the rounding a kind of wedge to the ground surface is formed and the bandage does not end with a sharp edge to the ground.
- the Bodenverdichtungsbandage invention may include a bandage coat, which is formed in one piece or two parts. The latter is particularly advantageous when cornering.
- a two-part bandage jacket comprises two hollow cylindrical individual cylinders, which are arranged side by side in the direction of the cylinder axis.
- a further vibration excitation device is arranged according to a preferred embodiment in the bandage interior, whose at least one imbalance shaft extends horizontally and in particular parallel to the axis of rotation of the compression bandage.
- at least one further imbalance shaft is present, which, however, is arranged horizontally, so that vibration can be provided via this imbalance shaft, in particular in a plane transverse to the horizontal plane.
- only a single vertical exciter is provided. In this way it is possible to achieve vibration excitations in all spatial directions with the aid of a single soil compacting bandage.
- Another aspect of the invention is also in a, in particular self-propelled, roller for soil compaction with at least one soil compaction bandage, in particular a soil compaction bandage according to the preceding embodiments with a vertical exciter.
- An essential feature of the roller according to the invention thus lies in the fact that it has a soil compacting bandage, in the bandage interior of which a vibration excitation device is arranged, in which exactly one imbalance shaft is arranged with its axis of rotation in the vertical direction.
- the roller can exert horizontal vibrations on this soil compaction bandage and thereby exert a horizontal Verdichtungsrüttelung on the ground.
- the roller according to the invention preferably comprises a machine frame, on which a drive device is arranged, wherein furthermore a drive gear is present, is transmitted via the drive energy from the drive means in the interior of the bandage casing for driving the vibration excitation device.
- a drive gear is present, is transmitted via the drive energy from the drive means in the interior of the bandage casing for driving the vibration excitation device.
- the roller preferably comprises a damping device, which is designed essentially for absorbing and damping horizontal forces between the soil compaction bandage and the machine frame.
- the damping device is positioned on the roller so that it damps a vibration transmission from the soil compaction bandage to the machine frame.
- the damping device may be arranged at at least one bearing point between the machine frame of the roller and the Bodenverdichtungsbandage, wherein the damping element is positioned in the vertical direction between the connection to the machine frame and the Bodenverdichtungsbandage.
- the damping element in this embodiment is thus part of a sandwich-like overall structure, comprising the damping element, which is arranged upwardly and downwardly by a connection to the machine frame or a connection to the soil compacting bandage.
- the damping element is in particular a rubber buffer. This arrangement requires that vibrations in the horizontal plane cause a shear stress of the damping element. In this way, the damping properties of the damping element can be optimally utilized.
- the damping device is further preferably formed in such a way that in each case at least one damping element is present on both sides of the soil compacting bandage.
- the damping device is further preferably formed in such a way that the bearing point of the machine frame are arranged on the top and the bearing point of the soil compacting bandage on the underside of the damping element.
- form the machine frame thus loads on top of the damping element, so that the machine weight presses on the damping element.
- This embodiment is also advantageous since the tensile load capacity of typical damping elements is significantly lower than the compressive load capacity.
- the damping device is designed essentially for receiving and damping horizontal forces acting parallel to the axis of rotation of the soil compacting bandage.
- the damping device is thus designed such that vibrations are damped particularly well transversely to the working direction of the roller. This can go so far that essentially only vibrations which are parallel to the axis of rotation of the compression bandage are damped by the damping device.
- the damping elements designed to receive shear forces such that the direction in which damp the damping elements shear forces, is parallel to the axis of rotation of the compression bandage.
- the damping device comprises a plurality of damping elements, wherein the damping elements are preferably arranged in a spoke shape or along a circle at equal angular intervals to each other about the axis of rotation of the soil compacting bandage.
- Vibrations acting parallel to the axis of rotation are thus damped by the damping elements, while vibrations directed radially to the axis of rotation are barely damped or not damped.
- a particularly good damping of the horizontal vibrations can be achieved parallel to the axis of rotation of the soil compacting bandage.
- damping elements are mounted on bearings between the machine frame of the roller and the soil compactor. tungsbandage are arranged, and that the bearings are arranged so that they rotate with a rotation of the soil compacting bandage about the axis of rotation. In other words, the damping elements are not rotationally decoupled from the soil compaction bandage. As a result, they are more evenly stressed, resulting in increased service life.
- damping device is formed like a sandwich according to the above embodiments and a damping device spoke-like according to the foregoing.
- This system has proven to be particularly advantageous if the sandwiching damping device is located on that side of the soil compacting drum on which the drive motor of the vibration excitation device is located or via which the drive motor of the vibration excitation device is energized, and if the spoke-like damping device on that side of the Bodenverdichtungsbandage is located on the drive motor for the rotation of the soil compacting drum around the axis of rotation.
- Bodenverdichtungsbandage invention is basically for types of rolls with one or more soil compaction drums into consideration, such as single drum compactors.
- the roller comprises two soil compacting bandages, wherein at least one of the soil compacting bandages comprises a vibration excitation device whose at least one imbalance shaft extends horizontally and in particular parallel to the axis of rotation of the compaction bandage, so that one of the two compaction bandages forms a vibration excitation device essentially designed for horizontal vibration another of the two soil compacting bandages has a vibration-generating device designed substantially for vertical compression.
- a conventional soil compaction bandage is combined with a vertical compaction soil compaction bandage according to the invention as described above.
- a compaction system for a roller is provided in this way, which enables a soil compaction or the generation of corresponding vibrations in all spatial directions or three-dimensionally, based on the total roller.
- a relevant point can thus first be subjected to horizontal vibrations and closing be subjected to vertical vibrations and vice versa, whereby particularly high soil compaction results can be obtained at the same time relatively gentle soil compaction.
- the vibration excitation device in the other of the two soil compaction braces can be, for example, a circular exciter, a directional oscillator or an oscillation exciter with a horizontal axis of rotation. Such vibration excitation devices are known in the art.
- one of the two soil compacting drums comprises a vibration generating device in which only one imbalance shaft is arranged vertically and at least one further imbalance shaft is arranged horizontally, in each case with respect to its axes of rotation.
- This embodiment combines the advantages of soil compaction with horizontal vibration and vertical vibration in a single drum.
- control the vibration excitation devices of the two soil compaction bandages individually and independently of one another, for example with a suitable control unit.
- a control unit which controls the vibration excitation means of the two soil compaction bandages.
- the control unit is thus designed in such a way that it controls the vibration excitation device of the two soil compaction bandages with respect to their operating state, for example the rotational frequency, the control position of the unbalanced parts of a multipart unbalance, the switching on and off, etc.
- regulation of the two vibration excitation devices can also take place via the control unit, for example to achieve a defined soil density or the like.
- the control unit can act on the respective drive means and / or transmission of the vibration excitation means and these taxes.
- a hinged roller is characterized by an at least two-part machine frame, wherein the two frame parts of the machine frame are connected to each other via an articulated joint. To steer the roller, the relative position of the two machine frame parts is changed via the articulated joint.
- a speed-steered tandem roller has a machine frame and above each a turntable on this arranged soil compacting bandages.
- the vibration excitation device according to the invention comprises exactly one vertically arranged imbalance shaft when the vibration excitation device has assumed its intended position. Such vibration excitation devices are usually traded as structural units.
- the vibration excitation device is preferably formed in such a way that the one imbalance shaft whose axis of rotation extends in the vertical direction, in a vertically upper region for the introduction of drive energy, in particular for connection to a drive device or a drive gear is formed.
- Essential for this embodiment is that the connection of the imbalance shaft to the drive train in the vertical direction seen in the region of the upper end of the imbalance shaft or coming from above.
- a preferred development of the vibration excitation devices further provides that it comprises a top and a bottom, and that a lubricating oil line is present, the lubricating oil coming from the bottom toward the top to at least one lubricating oil outlet directs.
- the lubricating oil line is preferably at least partially in the interior of the imbalance shaft, which can be designed as a hollow shaft, arranged.
- the invention also extends to a method for soil compaction with a two soil compaction drums having roller, in particular a roller according to the above.
- the method for soil compaction is characterized by the excitation of horizontal vibrations, in particular exclusively horizontal vibrations, in one of the two soil compaction drums and the excitation of vertical vibrations, in particular exclusively vertical vibrations, in the other of the two soil compaction drums.
- soil compaction braces are used for the inserts, which are subjected to vibrations or vibrations only in one direction, horizontally or vertically. To this Way must be present in the respective bandages only vibration exciters that can generate vibrations in the appropriate direction, whereby the system is simplified and cheaper overall.
- Fig. 1 is a side view of a tandem roller
- FIG. 2 shows a perspective oblique view of a bandage casing
- 3a and 3b show a side view and a plan view of an imbalance shaft
- FIG. 4 is a sectional view through a soil compaction bandage in the vertical direction and along its axis of rotation.
- 5a to 5c are schematic side views of two soil compaction bandages one
- Fig. 6 is a schematic plan view of a soil compaction bandage with an alternative vibration excitation device
- FIG. 7 shows a schematic side view of the soil compacting drums of a tandem roller with control unit
- Fig. 8 exploded view of a damping device
- Fig. 9 is a side view of a sandwich-type damper
- FIG. 10 is a sectional view of the sandwich type damper shown in FIG. 9; FIG.
- Fig. 1 1 is a side view of a spoke-like damping device
- FIG. 12 is a sectional view of the spoke-like damping device according to FIG.
- FIG. 1 shows a roller 1, which is in concrete terms a tandem roller.
- Essential elements of the roller 1 are a machine frame 2 with a front frame 3 and a rear frame 4, which are connected to each other via an articulated joint 5, a drive motor 6, a cab 7 and a front and rear soil compaction bandage 8.
- the roller 1 moves in or contrary to the direction of work a over the ground subsurface U to be compacted and thereby rolls over the ground with the two soil compaction drums 8.
- the Bodenverdichtungsbandagen 8 have a substantially hollow cylindrical bandage casing 9, as shown schematically in Figure 2.
- the soil compaction bandage 8 rotates about its axis of rotation D, which extends horizontally and transversely to the working direction a.
- the soil compaction bandage 8 and the bandage casing 9 have a width B along the axis D and a radius R.
- the bandage casing 9 may be formed integrally or in two parts with two bandage segments, as indicated in Figure 2 by the dashed line 10.
- the bandage casing 9 surrounds a bandage interior 11, which is bounded in the radial direction by the bandage casing 9. In the direction of the axis of rotation D of the bandage interior extends on both sides in each case to the end sides or in the radial direction to the outer edges 12 of the bandage casing.
- the soil compacting bandage 8 has a vibration-generating device 12, the basic structure of which is roughly indicated in FIGS. 3 a and 3 b.
- FIG. 3a is a side view
- FIG. 3b is a plan view from above.
- An essential element of the vibration excitation device 12 is an imbalance shaft 1 3, comprising an axle element 14 and an imbalance weight 1 5.
- the imbalance shaft 13 rotates during operation of the roller 1 about a vertical axis of rotation R v , which is indicated by dashed lines in Figure 3a. In the state of the vibration excitation device 12 inserted in the bandage interior 1 1, this rotational axis Rv thus extends vertically. By rotating in working mode unbalanced shaft 13 vibrations are generated in the horizontal plane XZ.
- the imbalance 15 is designed in several parts, as indicated in Figure 3b by the imbalance parts 15a and 15b, which together form the imbalance 15 indicates.
- the imbalance part 15b is concretely a so-called envelope weight which, depending on the direction of rotation of the imbalance shaft 1 3 relative to the balancing part 1 5a, can assume two different positions.
- vibration excitation devices which in the way are formed such that the relative position of the imbalance parts 15a and 15b, at least within a predetermined range, in particular angle range, is continuous to each other.
- FIG. 4 illustrates further details of the construction of the vibration excitation device 12 and its arrangement within the bandage interior 1 1.
- the Schwingungserregungsein device 12 is located along the axis of rotation D between the two panes 40.
- the imbalance shaft 1 3 is arranged in the manner in the bandage interior 1 1, that their axis of rotation Rv is vertical or vertical and perpendicular to the ground.
- the axis of rotation D of the soil compacting bandage 8 intersects the axis of rotation Rv in the bandage center of gravity 41.
- a drive motor 16 adjoins above, which may be, for example, a hydraulic or electric motor.
- the imbalance shaft 1 3 is thus at the same time the drive shaft in this case.
- the imbalance shaft 13 is rotatably mounted in two storage facilities 1 7 above and below the area of the imbalance weight 1 5.
- this total bearing device is led out on both sides of the front side of the bandage casing 9 from the bandage interior 1 1 and is there connected to the machine frame 2 below in more detail described manner.
- the bandage casing 9 is rotatably supported via pivot bearings 20, so as to ensure that the vibration excitation means 12 maintains the orientation of the imbalance shaft 13 in the vertical direction even when the bandage casing 9 is rotating.
- a drive gear 21, which is represented in dashed lines in FIG. 4, may also be introduced from an end face of the bandage casing 9 into the bandage interior 1 1.
- Drive energy can be transmitted to the imbalance shaft 13 via the drive gear 21 by a drive device outside the drum interior 1 1 or outside the portion of the drum interior 1 1 limited by the sheaves 40, whereby this is preferably done in such a way that the transmission connection of the vibration generating device tion 12 via one end of the imbalance shaft 1 3, in particular the upper portion of the imbalance shaft 1 3, takes place.
- FIG 4 also illustrates that the vibration excitation means 12 comprises a housing 22, via which a shielding of the vibration excitation means 12 takes place to the outside.
- the elements imbalance shaft 13 and pivot bearing 23 (via which the imbalance shaft is rotatably mounted in the bearing device 1 7) are arranged in the interior of the housing 22.
- a device for oil lubrication is present in the interior of the housing 22, comprising an oil sump 24, a delivery line 25 and a lubricating oil outlet opening 26. Via the delivery line 25, lubricating oil can be conveyed from the lubricating oil sump 24 in the vertical direction upwards to the lubricating oil outlet opening 26.
- a corresponding pump 27 may be provided.
- the elements conveying line 25, lubricating oil outlet opening 26 and pump 27 are arranged in one embodiment in the interior of the housing 22 but outside the imbalance shaft 1 3.
- FIG. 5a is, for example, a soil compaction bandage with an internal circular exciter with a horizontal axis of rotation R H running transversely to the working direction a.
- R H horizontal axis of rotation
- a so-called directional oscillator comprising the two imbalance shafts 28a and 28b, so that two unbalance masses arranged in opposite directions are present for generating in particular vertically directed vibrations.
- the exemplary embodiment according to FIG. 5c likewise comprises two imbalance shafts 28a and 28b with rotation axes R H extending horizontally and transversely to the working direction, wherein in this embodiment the imbalance masses of the imbalance shafts 28a and 28b are designed to rotate in the same direction. All three embodiments according to FIGS.
- FIG. 5a to 5c have in common that they combine a vibration excitation device, via which vibrations are generated in the horizontal plane (right), with a vibration generating device in a further bandage, which is essentially used for generating vibrations, in particular in the Vertical plane are formed.
- a vibration excitation device via which vibrations are generated in the horizontal plane (right)
- a vibration generating device in a further bandage, which is essentially used for generating vibrations, in particular in the Vertical plane are formed.
- Figure 6 relates to an alternative embodiment of the soil compacting bandage 8 and is a cross-sectional view through the soil compaction bandage 8 along its axis of rotation D and in the vertical direction.
- the vibration excitation device 12 next to an imbalance shaft 1 3 with vertical axis of rotation Rv comprises two further unbalanced shafts 28a and 28b, which are aligned with their axes of rotation along the axis of rotation D, ie horizontally, so that the soil compaction bandage 8 according to the figure 6 in one and the same bandage comprises an overall system over which horizontal vibrations and at the same time vertical vibrations can be generated and used for soil compaction.
- the bandage casing 9 is formed over the width range ⁇ of constant diameter. However, to its end faces across the width B2, it is rounded on both sides with the inner diameter of the bandage reducing to the outside, so that the bandage casing here has a convex cutting profile. In this way, a kind of wedge is formed between the bandage casing 9 and the ground surface U in this area, which is a gentle soil subsurface working in particular in the presence of horizontal and laterally parallel to the direction of the rotation axis D acting vibrations possible.
- the rounding-off can also be substantially flatter, as indicated by way of example in FIG. 6 with the dotted line AB.
- Bodenverdichtungsbandage 8 according to Figure 6 on one of its end faces a damping system or a damping device according to Figures 9 and 10 and on the other end a damping system or a damping device according to Figures 11 and 12. These will be described in more detail below.
- the embodiment of Figure 7 takes up the basic idea of the embodiments of Figures 5a to 5c again.
- a control device 29 is provided, via which a simultaneous control of the vibration excitation means 12 and 12 'in the two bandages, i. a control of the vibrations generating in the horizontal plane and the vibrations generating in a vertical plane is possible.
- the operation of the vibration excitation means 12 and 12 ' for example, with respect to the rotational frequency, the angular position of any existing adjustment weights, etc., optimized to each other and adapted for example to the respective soil conditions.
- FIG. 8 schematically illustrates the structure of a preferred damping system for combination with the bandage 8 according to the invention. It is essential that a damping element ment 30 is provided, which is arranged between a machine frame 2 connected to the bearing part 31 and connected to the soil compacting drum 8 bearing member 32 in the vertical direction. Overall, thus, a sandwich structure is obtained, wherein the elements 32, 30, 31 are arranged vertically stacked from bottom to top. In Fig. 8, these elements are shown spaced apart for further clarity in the vertical direction, wherein they are arranged one above the other in the installed state. The weight of the machine frame and the elements mounted thereon is thus introduced into the damping element 30 coming from above and discharged via the lower damping element via the soil compacting bandage 8 in the ground.
- the machine frame 2 rests thus coming from above on the upper side 30a of the damping element 30 so that it is loaded by the weight of the machine frame to pressure. If vibrations in the horizontal plane are generated in the soil compacting drum 8, they can be damped by shearing movements of the damping element 30 in the horizontal plane XZ. As a result, the optimum damping potential of the damping element 30 can be utilized.
- FIG. 9 shows the front side of a soil compacting bandage 8, on which the damping system is mounted via a plate 46, which may be connected, for example, with the disk disk 40 or which is the disk disk 40.
- the damping system is arranged around an opening 44, through which, for example, the drive motor 16 of the vibration excitation device 12 or a drive train or a hydraulic line or a power cable for the drive motor 16 is guided.
- the bearing part 32 connected to the soil compacting bandage 8 is mounted on the plate 46 via a swivel joint 45.
- the swivel joint 45 is used for rotational decoupling of the soil compacting drum 8 relative to the damping system or the machine frame 2.
- the bearing part 32 is connected to the bearing part 31 connected to the machine frame 2 via a damping element 30.
- the weight of the roller 1 is thus transmitted via the machine frame 2 to the bearing part 31 and the damping element 30, and from there to the bearing part 32 and the soil compacting bandage 8.
- the damping system shown in Figures 9 and 10 is thus a sandwich-like arrangement , which is rotationally decoupled from the soil compacting drum 8 and which does not rotate about the axis of rotation D when the soil compacting drum 8 is rotated.
- the damping system thus comprises four damping elements 30. Vibrations in the XZ plane are reliably damped by this system.
- Figures 1 1 and 12 An alternative embodiment of a damping system is shown in Figures 1 1 and 12, wherein Figure 12 is a sectional view taken along the line II-II of Figure 1 1 shows.
- Figure 1 1 shows a plan view of the end face of the soil compacting bandage 8 and illustrates that the damping elements 30 are arranged like a spike or star around the axis of rotation D.
- the individual damping elements 30 are also rotated according to their respective position about the axis of rotation D, wherein the direction in which they dampen shear forces, always parallel to the axis of rotation D.
- eight damping elements 30 are arranged around the axis of rotation D.
- the individual damping elements 30 are arranged symmetrically at regular intervals and about the axis of rotation D.
- the bearing part 32 connected to the soil compacting bandage 8 is fastened to the soil compacting bandage 8 via a plate 46.
- the plate 46 may for example be attached to a dish washer 40 or even form the dish washer 40.
- About damping elements 30 of the bearing part 32 is connected to the bearing part 31, which in turn is connected via a rotary joint 43 and the traction motor 42 with the machine frame 2 in connection.
- the traction motor 42 is a hydraulic motor that is used to rotate the soil compaction bandage 8 about the rotation axis D, and thus the roller 1 in motion.
- the damping system including the bearing parts 31, 32 and the damping elements 30, thus rotates a rotation of the soil compaction bandage 8 about the axis of rotation D with.
- the damping device according to Figures 1 1 and 12 dampens vibrations along the axis of rotation D, while vibrations in other directions are not damped, since the damping elements 30 are not elastic in the radial direction from the axis of rotation D. Overall, a particularly good damping of the vibrations along the axis of rotation D is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013022180 | 2013-12-30 | ||
PCT/EP2014/003330 WO2015101407A1 (de) | 2013-12-30 | 2014-12-11 | Bodenverdichtungsbandage, walze mit einer solchen bodenverdichtungsbandage, schwingungserregungseinrichtung für eine bodenverdichtungsbandage und verfahren zur bodenverdichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3092341A1 true EP3092341A1 (de) | 2016-11-16 |
EP3092341B1 EP3092341B1 (de) | 2019-05-01 |
Family
ID=52292850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14824367.8A Active EP3092341B1 (de) | 2013-12-30 | 2014-12-11 | Bodenverdichtungsbandage, walze mit einer solchen bodenverdichtungsbandage und verfahren zur bodenverdichtung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3092341B1 (de) |
DE (1) | DE102014018457A1 (de) |
WO (1) | WO2015101407A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4177401A1 (de) | 2021-11-08 | 2023-05-10 | BOMAG GmbH | Tandemwalze zur verdichtung eines bodenuntergrundes |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015016627A1 (de) | 2015-12-21 | 2017-06-22 | Bomag Gmbh | Bodenverdichtungsbandage und Baumaschine zur Bodenverdichtung |
DE102016009029A1 (de) | 2016-07-26 | 2018-02-01 | Bomag Gmbh | Bodenverdichtungsmaschine mit Energieübertragungseinrichtung zur Versorgung einer Sensoreinrichtung zur Bestimmung der Bodensteifigkeit mit elektrischer Energie und Verfahren zur Herstellung bzw. Betrieb |
DE102016009085A1 (de) | 2016-07-26 | 2018-02-01 | Bomag Gmbh | Bodenverdichtungswalze mit Sensoreinrichtung an der Walzbandage und Verfahren zur Ermittlung der Bodensteifigkeit |
DE102016009235A1 (de) | 2016-07-28 | 2018-02-01 | Bomag Gmbh | Baumaschine mit Bordcomputer und digitalem Logbuch sowie Verfahren zur Dokumentation des Arbeitsbetriebes einer Baumaschine |
DE102017000193A1 (de) * | 2017-01-11 | 2018-07-12 | Bomag Gmbh | Walze zur Bodenverdichtung sowie Verfahren zum Erzeugen eines Schwingungsbildes einer Walze zur Bodenverdichtung |
CN108625258B (zh) * | 2017-03-20 | 2024-01-02 | 徐工集团工程机械股份有限公司 | 定向振动轮和振动压路机 |
DE102018006158A1 (de) * | 2018-08-03 | 2020-02-06 | Bomag Gmbh | Walzbandage für eine baumaschine zur verdichtung des bodenuntergrundes sowie baumaschine zur verdichtung des bodenuntergrundes mit einer solchen walzbandage |
DE102018132379A1 (de) * | 2018-12-17 | 2020-06-18 | Hamm Ag | Bodenbearbeitungswalze |
DE102022132599A1 (de) | 2022-12-08 | 2024-06-13 | Hamm Ag | Bodenbearbeitungswalze für eine Bodenbearbeitungsmaschine |
DE102023201335A1 (de) | 2023-02-16 | 2024-08-22 | Bomag Gmbh | Verfahren zur optimierung des beschleunigungsverhaltens einer selbstfahrenden bodenverdichtungsmaschine sowie bodenverdichtungsmaschine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59185206A (ja) | 1983-04-07 | 1984-10-20 | 酒井重工業株式会社 | 締固め機械の振動機構 |
JP3146411B2 (ja) | 1996-12-12 | 2001-03-19 | 酒井重工業株式会社 | 振動機構およびその振動機構を用いた振動ローラ |
US8393825B2 (en) | 2010-11-05 | 2013-03-12 | Caterpillar Inc. | Vibratory compactor |
-
2014
- 2014-12-11 EP EP14824367.8A patent/EP3092341B1/de active Active
- 2014-12-11 WO PCT/EP2014/003330 patent/WO2015101407A1/de active Application Filing
- 2014-12-11 DE DE102014018457.9A patent/DE102014018457A1/de not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4177401A1 (de) | 2021-11-08 | 2023-05-10 | BOMAG GmbH | Tandemwalze zur verdichtung eines bodenuntergrundes |
DE102021212546A1 (de) | 2021-11-08 | 2023-05-11 | Bomag Gmbh | Tandemwalze zur Verdichtung eines Bodenuntergrundes |
Also Published As
Publication number | Publication date |
---|---|
EP3092341B1 (de) | 2019-05-01 |
WO2015101407A1 (de) | 2015-07-09 |
DE102014018457A1 (de) | 2015-07-02 |
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