EP3124407A1 - Dispositif convoyeur pour un finisseur ou un alimentateur - Google Patents

Dispositif convoyeur pour un finisseur ou un alimentateur Download PDF

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Publication number
EP3124407A1
EP3124407A1 EP15180287.3A EP15180287A EP3124407A1 EP 3124407 A1 EP3124407 A1 EP 3124407A1 EP 15180287 A EP15180287 A EP 15180287A EP 3124407 A1 EP3124407 A1 EP 3124407A1
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EP
European Patent Office
Prior art keywords
tensioning
conveyor
pressure
paver
conveying device
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.)
Withdrawn
Application number
EP15180287.3A
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German (de)
English (en)
Inventor
Lino Giovanoli
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.)
Ammann Schweiz AG
Original Assignee
Ammann Schweiz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ammann Schweiz AG filed Critical Ammann Schweiz AG
Publication of EP3124407A1 publication Critical patent/EP3124407A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • E01C19/48—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ

Definitions

  • the present description relates to a conveyor device for a paver or feeder as described in claim 1. It further relates to a paver and a feeder, and a hydraulic control device according to the further independent claims, as well as a method for operating the conveyor.
  • Road pavers include a tractor and towed vehicles.
  • a paving material for example a bituminous mass
  • the Tractor tows the mounting means, which include, for example, a screed, on the built-in, wherein the stored in front of the installation means built-in compacted by the mounting means and optionally contoured.
  • the mounting means may comprise a rammer, details of the mounting means being of no concern to the further embodiments of the present description.
  • a transverse distributor can be arranged.
  • the tractor comprises conveying means with which the built-in material is conveyed from the material bunker lying in the direction of installation to a discharge position and thus to the installation means. These are usually spread as rotating funding.
  • conveying means with which the built-in material is conveyed from the material bunker lying in the direction of installation to a discharge position and thus to the installation means.
  • These are usually spread as rotating funding.
  • scraper belts in which two laterally running chains in the conveying direction are arranged with webs extending transversely between the chains. With a circulation of the chains, the webs pull the built-in with him and promote it from the bunker to the dumping and thus to the installation means.
  • feeders which serve to promote material by means of a conveyor, for example, between a truck and a paver.
  • the tension of the conveying means can be adjusted, for example, by setting the distance of at least one frame-fixed roller and at least one tensioning roller, via which the conveying means are guided, in such a way that a certain tension of the conveying means results.
  • a conveying device for a paver or a feeder is to be specified, with which a constant tension of the conveying means can be ensured in the long-term operation.
  • the conveying device should require a low maintenance requirement.
  • the conveying device should be specified in such a way that a correct tensioning of the conveying means is guaranteed, which does not depend on manual adjusting operations.
  • a conveyor device for a paver or a feeder which comprises a rotating bendable conveyor and at least one clamping device for clamping the conveyor, wherein the conveyor is guided over at least two rollers, wherein at least one of the rollers is fixedly mounted to a frame and at least one of the roles one Tensioner pulley, which, or the axis thereof, is displaceable relative to the frame, wherein the tensioning device is connected at a first end to the frame and acts on the tensioning roller at a second end, and wherein the tensioning device comprises at least one hydraulically loadable tensioning means.
  • the first end of the clamping device is also referred to as a fixed end and the second end as a loose end of the clamping device.
  • a hydraulically loadable clamping means when it is subjected to a constant hydraulic pressure, regardless of its deflection always a constant clamping force.
  • a coil spring the applied force acting in the longitudinal direction decreases with the length of the spring remains in a hydraulic cylinder, the longitudinal force regardless of the position of the piston in the cylinder, ie regardless of the deflection of the clamping device, always the same, provided that hydraulic working pressure of the clamping device is kept constant.
  • the force applied by a hydraulically loadable clamping means is dependent on the hydraulic working pressure, but independent of the deflection of the clamping means.
  • the bendable conveying means is for example a conveyor belt or a scraper belt, as described above.
  • the clamping device acts on a tensioning roller over which the conveying means is guided. In a conventional manner, the distance between the deflection and / or tensioning roller is made variable from the axes of further drive and / or deflection and / or tensioning rollers.
  • the deflection and / or tensioning roller is also referred to as a tensioning roller in the following.
  • the term "role" within the meaning of the present disclosure broadly understand, as an element over which the conveyor unrolls. A role may be contoured in this sense on its outer circumference, for example as a gear. This is readily apparent to those skilled in the art.
  • the tensioning device exerts a force on the tensioning roller, and shifts the tensioning roller relative to other, frame-fixed rollers until the desired clamping force of the conveyor is set.
  • the tensioning device thus displaces the tensioning roller until an equilibrium of forces is set between the forces applied by the tensioning force of the conveying means and the tensioning device to the tensioning roller.
  • an axis of a tension roller is held on the second, loose end of the tensioning device.
  • the axle may be guided at the loose end of the tensioner in a bearing that allows rotation of the axle.
  • the axis may be held firmly about its axis of rotation at the loose end of the tensioning device, wherein at least one tensioning roller is mounted rotatably about the axis on this.
  • the axis may be pivotally and pivotally connected to the tensioning device, such that no moments are introduced into the tensioning device.
  • a change in the deflection of the hydraulically actuable clamping means is effected by hydraulic fluid is supplied to the clamping means or derived from the clamping means.
  • the force applied by the hydraulically loadable clamping means is adjustable via a hydraulic working pressure. It may be provided that means are provided in flow paths through which hydraulic fluid can be supplied to the hydraulically loadable tensioning means or via which hydraulic fluid can be discharged from the hydraulically loadable tensioning means, means are provided which generate a flow resistance. These means act as delay elements for a deflection change of the hydraulically loadable clamping means. This is because, due to the flow resistance generated, hydraulic fluid can not flow rapidly to or flow away from the hydraulically loadable clamping device. This will be explained in more detail below. In this case, a delay is not to be understood as meaning that the change in the deflection of the hydraulically actuated clamping means does not take place until after a certain time, but that this is slowed down, in the regulatory sense of a delay element.
  • the tensioning device has a longitudinal extent between its first, fixed end and the second, loose end, and is designed so that it can apply a force acting along the longitudinal extension force which is further directed in particular from the fixed end to the loose end.
  • the hydraulically loadable clamping means is, for example, a hydraulic cylinder, and may furthermore, in particular, be a single-acting hydraulic cylinder.
  • the piston side of the hydraulic cylinder can be acted upon by a hydraulic pressure. This can be applied with the same hydraulic pressure, a greater force than when an impact of the piston rod side.
  • the hydraulic cylinder is arranged with its cylinder towards the frame or that the cylinder is connected to the frame.
  • the cylinder may in particular be attached to the frame.
  • the hydraulic cylinder acts in this case with the piston rod indirectly or directly on the tension roller of the conveyor, or on an axis of the tension roller.
  • the hydraulic tensioner may be configured to maintain the tensioning force on the conveyor within certain limits.
  • one or more hydraulically actuable tensioning means is or are provided as the tensioning means of the tensioning device.
  • a hydraulically loadable clamping means can be adjusted in a simple manner via a control and / or regulation of the pressure, the voltage of the conveyor and this by changing the Deflection of the clamping device or the hydraulically acting clamping means are regulated or adjusted.
  • the tension of the conveying means is kept constant over the long term, that is to say in the case of use-related elongation of the conveying means. There is no maintenance required.
  • the tensioning device reacts to short-term and, in particular, periodically occurring changes in the clamping force slowed down by a change in its deflection.
  • Means may also be provided for limiting the force applied by the tensioning device. Overall, the useful life of the conveyor is significantly increased, improves the reliability and reduced maintenance.
  • the tensioning device comprises at least one elastic tensioning means, wherein the hydraulically loadable tensioning means and the elastic tensioning means are arranged in a series connection.
  • at least one hydraulically loadable clamping means may be connected in a longitudinal direction of the clamping device with at least one elastic clamping means.
  • the elastic tensioning means is for example a spring, for example a helical spring and / or a plate spring.
  • the tensioner includes, in certain embodiments, a pressure accumulator.
  • hydraulic fluid from the hydraulically loadable clamping means can flow into the pressure accumulator and flow out again, so as to allow a change in length between the frame-fixed and the free end of the clamping device. It is thus possible that the hydraulically actuated clamping means can work without each due to such short-term changes in the force acting on the hydraulically acting clamping force continuously hydraulic fluid from a hydraulic supply system to be removed from the hydraulically actuated clamping means and fed back to the hydraulically actuated clamping means. This ensures a low-loss and economical operation of the hydraulically loadable clamping device.
  • a pressure accumulator for example, a hydropneumatic pressure accumulator application in which a compressible gas cushion allows the inflow and outflow of hydraulic fluid.
  • the pressure accumulator may be arranged said elastic clamping means, which is connected in series with the hydraulically loadable clamping means.
  • the hydraulically loadable clamping means and the elastic clamping means are loaded with the same force.
  • the elastic clamping means compensates small and short-acting length changes, which of course changes the acting clamping force with the change in length of the elastic clamping means.
  • the hydraulically actuated clamping means reacts, for example, in the manner described above with a time delay to the change in the hydraulic pressure caused thereby and / or acts as a clamping force limiter.
  • the desired value of the clamping force as well as the dynamic behavior of the clamping device can be adjusted via a suitable running control device for supplying the hydraulically actuated clamping means.
  • the hydraulically loadable clamping means is connected to a hydraulic control device.
  • a pressure control member is arranged, which is provided and arranged to adjust the hydraulic pressure in a working space of the hydraulically loadable clamping means to a desired value.
  • the hydraulic control device comprises a means for increasing the flow resistance of the hydraulic fluid flowing back from the hydraulically loadable clamping means to the pressure control member, which is arranged in a hydraulic flow path between the pressure control member and the hydraulically actuated clamping means.
  • This agent is referred to below as scrubpoundbegrenzer.
  • the reflux restrictor By means of the reflux restrictor, the volumetric flow of the hydraulic fluid flowing back from the hydraulically loadable clamping device to the pressure control member can be reduced. This ensures that with an increase in pressure in the hydraulically loadable clamping means due to a force acting on the hydraulically actuated clamping means force delay time or with a time constant hydraulic fluid can flow through the pressure control element.
  • the pressure control element, a pressure control loop, as well as the conveyor are thus secured against swinging. Since the volumetric flow of the hydraulic fluid flowing back from the hydraulically loadable tensioning means is reduced, reliable and economical operation of the tensioning device is furthermore ensured.
  • the remindmannbeskyr can be realized by a check member and a throttle body between the pressure control member and the hydraulically acting clamping means are arranged in parallel, wherein the non-return member is arranged with its flow direction from the pressure control member to hydraulically acted clamping means.
  • a pressure accumulator of the type described above may be connected to a hydraulic flow path which is between the hydraulically loadable clamping means and the reflux limiter is arranged. In this accumulator hydraulic fluid can be temporarily stored, which flows out of the hydraulically acted clamping means and the return flow is hindered to the pressure control member due to therastiserbeskyrs.
  • a pressure limiting member may be provided, which is arranged in a return flow path, which leads from the hydraulically loadable clamping means to a tank connection, and whose pressure limit is greater than the desired value of the inlet pressure.
  • a further return line is provided between the hydraulically loadable clamping means and a tank or a tank connection, which is provided with a manually operable shut-off member. This makes it possible to relieve the hydraulically loadable clamping means during maintenance of the conveyor device, for example in a necessary replacement of the conveyor.
  • the tensioning device comprises hydraulic connections, which are provided to be connected to a hydraulic supply system.
  • a conveying device of the type described above is also described, which is connected to the hydraulic supply system of a paver or a feeder.
  • the conveying means of the conveying device comprises, for example, a link chain.
  • the conveyor is, for example, a scraper belt.
  • the conveyor is a conveyor for a paver, the paver comprising mounting means, and wherein the conveyor is adapted and provided to convey dug from a paver bunker of the paver to the installation means.
  • a paver and a feeder comprising a conveyor of the type described above, and wherein the frame of the conveyor is a chassis of the paver or the feeder.
  • a paver and a feeder comprising a bunker for paving, and further comprising a conveying device of the type described above which is adapted, provided and arranged for paving material from the bunker to, for example, before a paver's installation means arranged, discharge position of the paver or the feeder to promote.
  • the hydraulic control device accordingly comprises a pressure control member, which on the one hand comprises a pressure connection for hydraulic fluid and a return connection, and on the other hand comprises an output connection, which is provided to be connected to the hydraulically loadable clamping means.
  • the pressure control member is in a known per se, a hydraulic control member, which is executed and provided, in dependence on the pressure present at the output port, the output terminal bring the pressure port and / or the return port in fluid communication.
  • this includes a hydraulic flow path from the output port of the pressure control member to a port for a hydraulically actuated clamping means.
  • a reflux restrictor is arranged as described above.
  • a pressure accumulator may be provided and connected in such a way that it is in fluid communication with the hydraulic flow path between the reflux limiter and the hydraulically loadable tensioning means.
  • a hydraulic return flow path is arranged from the hydraulically actuable clamping means to a return port.
  • a pressure limiting member is arranged.
  • a pressure limit of the pressure limiting member is greater than the control pressure of the pressure control member.
  • a return line can be provided by the hydraulically acted clamping means, in which a manually operable shut-off device is arranged.
  • the conveying device is, for example, a scraper belt conveyor, which is intended to convey material from a built-in bunker of a road paver to the installation means of the paver.
  • the method comprises providing a revolving flexible conveyor and applying a tensile force to the conveyor to place the conveyor under tension. The force is applied by at least one hydraulically loadable clamping means.
  • the method may further comprise applying a controlled hydraulic pressure to the hydraulically actuable clamping device.
  • the method may also include limiting the return flow of hydraulic fluid from the hydraulically actuable clamping means to a pressure control member. Furthermore, it can be provided from the at least partially introduce hydraulic fluid flowing out hydraulically actable clamping means in a pressure accumulator.
  • the FIG. 1 shows a paver 1, comprising a tractor 10 and a plank 20.
  • a tracked paver is shown. It is understood that the following explanations also apply to a wheeled paver.
  • the tractor 10 includes a drive 11, a chassis 12, and a built-in bunker 13.
  • the screed 20 is coupled by means of support arms 17 to the tractor. By means of hydraulic cylinders 15 and 16, the screed 20 can be raised and lowered.
  • the paver moves in the direction shown by the arrow 2.
  • Built-in material is conveyed by means of scraper belt conveyors 14, which are only partially visible in this illustration, out of the built-in bunker 13 onto the flat 31 in the direction of travel behind the tractor and in front of the screed.
  • Deposit material 32 deposited there is distributed by means of a worm 22 in the width of the screed, pressed down by a rammer 23, which moves alternately upwards and downwards, and finally compacted by a sliding plate 24 of the screed by the weight of the screed resting thereon and smoothed. In this way, behind the road paver, a smoothed and optionally contoured roadway surface 33 is created.
  • FIG. 2 schematically a side view of a scraper belt conveyor 14 is shown as an example of a conveying device of the type described.
  • the scraper belt conveyor comprises a chain 141, which is guided over a drive roller 142 and a tensioning roller 143.
  • the drive roller and the tension roller are each designed as sprockets, on the teeth of the chain 141 unrolls.
  • Two of the chains mentioned are arranged parallel to one another in the axial direction of the rollers 142 and 143. In the present illustration, only one of these chains is visible. Another, not visible in the present illustration, chain is guided in an identical manner via a drive roller and a tensioning roller. Between the two chains are arranged in a likewise not shown, but well-known way, transverse webs.
  • the chains form together with the transverse webs a circumferential bendable conveying means which is driven by the drive rollers 142 in the conveying direction indicated by F.
  • the transverse webs run in the Switzerlandtrum overhead in the present presentation on a plate 144.
  • the transverse webs promote material lying on the plate 144 in the conveyor on the plate.
  • the drive roller 142 is mounted stationary to a frame 25. This frame may be, for example, the chassis of a paver.
  • a tensioning device 40 is attached at a first end to the frame 25 and acts at its second end on the tension roller 143.
  • the second end of the tensioning device 40 and the tensioning roller 143 are slidably disposed relative to the frame 25. That is, the tensioning device is designed such that the first end of the tensioning device and the second end of the tensioning device are displaceable relative to one another in a longitudinal direction of the tensioning device.
  • the tensioning device is further configured such that a force directed in the longitudinal direction of the tensioning device from the first end to the second end is applied, which endeavors to remove the first and the second end of the tensioning device from one another. In this way, a tension of the rotating bendable conveying means can be ensured by the tension of the chain 141.
  • FIG. 3 shows a schematic plan view of a parallel arrangement of two scraper belts 114 and 214, as found, for example, in a paver for conveying the material to be installed by the bin bin to the installation means, for example, the screed application.
  • a first pair of chains 1411 and A second pair of chains 1413 and 1414 forms a second scraper belt 214 with interposed, not shown, transverse webs arranged between them.
  • the arrangement of the transverse webs between each two chains in a scraper belt is familiar to the expert, which is why the transverse webs are not shown in the sense of clarity.
  • the plates 144 from the FIG. 2 not shown in the sense of a better clarity and representability of the essential elements.
  • the chains run on the one hand via drive rollers 142, which are arranged on a common drive shaft 148.
  • the drive shaft 148 is fixedly mounted to the frame 25.
  • drive pinion 149 are arranged.
  • the tension rollers of each scraper belt 114 and 214 are rotatably mounted on a respective common axis 146 by means of bearings 145.
  • a separate axle 146 is provided, on which the tension rollers assigned to the respective scraper belt are mounted.
  • the axes are provided at their ends with guide pieces 147.
  • the guide pieces are guided in longitudinal grooves of linear guide elements 26, such that they are displaceable in the linear guide elements along the longitudinal extension of the tensioning devices or in the illustrated embodiment of the tensioning strand of the chains, as well as perpendicular to the axial direction of the respective axis 146.
  • the guide pieces In a direction perpendicular thereto, which is also perpendicular to the axial direction of the axis 146, the guide pieces, however, are fixed, apart from a possible game.
  • each axis 146 is held axially fixed along its axial direction between two linear guide elements, with a play of up to a few millimeters is possible in the axial direction.
  • the guide pieces 147 further have rounded outer surfaces, such that the axis 146 can tilt by both ends of an axis 146 are moved differently far in the linear guide. The effect achieved by this is described in more detail below.
  • the axle 146 is connected to a tensioning device 40.
  • the clamping device 40 is in the present embodiment, a single-acting hydraulic cylinder 41, which at a End is firmly connected to the frame 25.
  • the end of the tensioning device is pivotally connected to the axis 146.
  • the axis 146 is pivotally connected to the piston rod 42, acting on the piston rod bending moments are avoided.
  • the piston rod is articulated in particular centrally between the tension rollers on the axle. This results in a moment equilibrium around said pivot point when both the tension rollers of an axis guided chains, for example, 1411 and 1412 or 1413 and 1414, acted upon by the same clamping force.
  • the axle 146 tilts about the pivot point between the axle and the piston rod. This is made possible in particular by the rounded outer surfaces of the guide pieces 147. In any case, both chains remain tensioned with the same force.
  • FIG. 4 an exemplary hydraulic control device is shown, which can be used in conjunction with the proposed conveyor to control or regulate the working pressure of the hydraulically loadable clamping means and the hydraulically loadable clamping means flowing and flowing from this hydraulic fluid volume flows.
  • a pump 51 delivers hydraulic fluid from a tank 52 to the control device 50.
  • the hydraulic fluid delivered by the pump flows to a pressure control member or pressure regulating member 53. This regulates the pressure at its outlet or in a hydraulic fluid flow path 61 which is between a hydraulic fluid flow.
  • Pressure connection 65 and the hydraulically actuated clamping means is arranged, to a set value of, for example, 120 bar.
  • the pressure regulating member 53 opens a flow path from the pump 51 to the hydraulically loadable clamping means, hydraulic cylinders, 41.
  • hydraulic fluid 41 flows to the hydraulic cylinders 41 on the piston side.
  • the piston rods 42 of the hydraulic cylinders 41 extend until the counterforce acting on the piston rod compensates for the force exerted by the hydraulic pressure on the pistons.
  • this force corresponds to the clamping force acting on one of the axes 146, or the force which is applied as a clamping force on the two tension rollers of these axes of the chains.
  • the pinching of a foreign body make a short-term change in the deflection of the clamping device and thus also a hydraulic cylinder required. That is, the pressure regulating member 53 would have to readjust constantly short-term changes in the necessary for a particular chain tension center distance between the drive rollers and the idlers by continuously drained hydraulic fluid from the hydraulically actuated clamping means and this is fed back. On the one hand, this is associated with considerable hydraulic losses. On the other hand, there is also the risk of a dynamic swinging of the pressure regulating member. For this reason, a reflux limiter 54 is arranged in the hydraulic fluid flow path 61 between the pressure regulating member 53 and the hydraulically loadable clamping means 41.
  • a check member 55 and parallel to a throttle body 56 are arranged.
  • the non-return member is arranged such that it opens in a flow direction from the pressure regulating member 53 to the hydraulically loadable clamping means 41 and allows unimpeded flow of the hydraulic fluid.
  • the check member 55 closes, and the hydraulic fluid must flow through the throttle body 56. This means that hydraulic fluid can not flow back to the pressure regulating member 53 as fast as desired and be drained via this into the tank 52.
  • Hydraulic fluid which is displaced from the hydraulically loadable clamping means upon a change in the deflection of the hydraulically loadable clamping means and can not flow off quickly enough via the reflux limiter 54, is temporarily stored in the pressure accumulators 57. In this case, the hydraulic pressure in the hydraulically loadable clamping means rises above the desired pressure value. If the hydraulically loadable clamping means are again loaded with a lower external force, then the hydraulic fluid cached in the pressure accumulators can again flow directly to the hydraulically loadable clamping means.
  • a temporary increase in the clamping force is tolerated and readjusted only by a time delay by reducing the deflection of the clamping device or the clamping means. It must be avoided, however, that the pressure in the clamping devices so far increases that it would cause mechanical damage.
  • a return flow path 62 is provided by the clamping means to the tank, in which a pressure limiting member 58 is arranged.
  • the passage the pressure limiting member 58 is closed at the target pressure set at the pressure regulating member 53. Only at a safety pressure, which is significantly above the target pressure, opens the pressure limiting member 58, such that the hydraulic fluid can flow freely from the clamping means to the tank. This ensures that a maximum permissible pressure in the clamping means 41 and a corresponding maximum permissible clamping force is not exceeded.
  • the pressure limit value of the pressure-limiting element 58 is, for example, 250 bar in a specific, but by no means restrictive, embodiment.
  • the illustrated hydraulic control device thus enables efficient and safe operation of the conveyor.
  • FIG. 5 shows another example of the execution of a scraper belt conveyor in a paver according to the teachings described herein. This essentially corresponds to the one in FIG. 3 given example, why is omitted to avoid repetition on a description of identical details. It is in this respect to the description of FIG. 3 directed.
  • the in the FIG. 5 illustrated embodiment differs from that of FIG. 3 inasmuch as the tensioning device comprises elastic tensioning means 43 in addition to the hydraulically loadable tensioning means 41.
  • the hydraulically actuated clamping means and the elastic clamping means are arranged in a series circuit.
  • the elastic clamping means are connected at one end to the hydraulically actuated clamping means.
  • a coil spring is attached to one end of a piston rod 42, and is also pivotally connected to an axle 146.
  • the coil springs can be made progressive.
  • other types of elastic clamping means can be used, such as leaf springs, disc springs or elastomer packages.
  • more elastic Clamping means can be arranged parallel to each other and in series with a hydraulically loadable clamping means.
  • the elastic clamping means can compensate for small changes in the axial distances between the drive rollers 142 and the tensioning rollers 143, without that hydraulically acted clamping means must come into action, or with a limited deflection change of hydraulically acted clamping means. Longer-term changes in the deflection of the clamping device, however, are caused by the hydraulically actuated clamping means, and the elastic clamping means return to their original deflection.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
EP15180287.3A 2015-07-27 2015-08-07 Dispositif convoyeur pour un finisseur ou un alimentateur Withdrawn EP3124407A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3330438A1 (fr) * 2016-12-01 2018-06-06 Dynapac GmbH Engin de construction routière et procédé de fonctionnement d'un engin de construction routière

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2257119A1 (de) * 1971-11-30 1973-06-07 Webb Co Jervis B Steuerung einer spannvorrichtung fuer einen foerderer
GB2042453A (en) * 1978-12-21 1980-09-24 Orbis Eng Ltd Conveyor belt take-up device
DE29803263U1 (de) * 1997-12-18 1998-04-16 Man Takraf Foerdertechnik Gmbh Hydraulische Spanneinrichtung für Gurtbandförderer
DE19704800A1 (de) * 1997-02-08 1998-08-13 Adam Udo Maschinenfabrik Bandumkehre mit selbsttätiger Ausgleichswaage
EP2653733A2 (fr) * 2012-04-18 2013-10-23 CLAAS Selbstfahrende Erntemaschinen GmbH Dispositif de serrage d'un moyen de traction d'un convoyeur
EP2781657A1 (fr) * 2013-03-20 2014-09-24 Dynapac GmbH Chargeur et son procédé de rééquipement
EP2842409A1 (fr) * 2013-09-03 2015-03-04 CLAAS Selbstfahrende Erntemaschinen GmbH Convoyeur incliné d'une moissonneuse

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2257119A1 (de) * 1971-11-30 1973-06-07 Webb Co Jervis B Steuerung einer spannvorrichtung fuer einen foerderer
GB2042453A (en) * 1978-12-21 1980-09-24 Orbis Eng Ltd Conveyor belt take-up device
DE19704800A1 (de) * 1997-02-08 1998-08-13 Adam Udo Maschinenfabrik Bandumkehre mit selbsttätiger Ausgleichswaage
DE29803263U1 (de) * 1997-12-18 1998-04-16 Man Takraf Foerdertechnik Gmbh Hydraulische Spanneinrichtung für Gurtbandförderer
EP2653733A2 (fr) * 2012-04-18 2013-10-23 CLAAS Selbstfahrende Erntemaschinen GmbH Dispositif de serrage d'un moyen de traction d'un convoyeur
EP2781657A1 (fr) * 2013-03-20 2014-09-24 Dynapac GmbH Chargeur et son procédé de rééquipement
EP2842409A1 (fr) * 2013-09-03 2015-03-04 CLAAS Selbstfahrende Erntemaschinen GmbH Convoyeur incliné d'une moissonneuse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3330438A1 (fr) * 2016-12-01 2018-06-06 Dynapac GmbH Engin de construction routière et procédé de fonctionnement d'un engin de construction routière
DE102016014395A1 (de) * 2016-12-01 2018-06-07 Dynapac Gmbh Straßenbaumaschine und Verfahren zum Betreiben einer Straßenbaumaschine

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