IL38741A - Road roller - Google Patents

Description

Road rollor Benno Kaltenegger roller having four rolls mounted in a coramon The invention relates to a road roller having four rolls mounted in a common which are driven by a the rolls simultaneously provided with a vibration Road of this type are wherein the rolls disposed one behind the other in the direction of travel in each particular instance may be driven jointly an independently of the adjacent roll With arrange there is provided for each pair of the rolls one behind the other reversing gearing adapted to be controlled independently of the other reversing reversing gearing be adjusted to forward reverse speed and idling so that the road roller cannot only be driven forwards and in reverse but can also bo rotated on the spot also driven in a Such a drive device requires a considerable of The two reversin gears are arranged separately from each each on one side of the road it is impossible to travel on a curved path is controlled When attempting to do the driven pair of rolls will begin to slip This is noticeable in an especially n when smoothin is occasionally take In consequence the freshl laid roadway may be partly torn It is the object of the invention to provide a drive device for a road roller having four rolls mounted in a rigid which saves an large amount of space and wherein travel on curved at constrainedly determined speeds of the roll can be The road roller of the type mentioned at the outset according to the characterised in that there is provided for the drive of the roll pairs consisting of rolls disposed one behind the a common gearing from the single drive shaft of which two separate gear wheel branches each via a coupling 3haft provided with two controllable to the drive shafts for the roll pair With this reversing back gearing may be associated with of the coupling With such a of the drive all the travel movements of the road roller are constrainedly so that the steering of the road in particular for on c an be effected in unequivocally defined Each roll or each pair of rol constrainedly remains gear so that no slipping or sliding between the rolls and the ground can take It becomes possible to avoid the action of a differential in known slip is At the same tim there is afforded a gearing which can be designed to be extremely and It consists merely of spur gears and the construction of the gearing is simple and possible to travel at various In this there may be arranged betwee the shaft and each bac for the coupling shaft a further coupling shaft coupling having two controllable I consequence of the fact that the gearing for the speeds is accommodated within the common gearing the entir gearing is not only and readily but furthermore it becomes in to drive the roll during travel c urves both and in independentl of each other and at differe forwardly so that travel on curves with constrainedly driven rolls can be effected forwardly and rearwardly through an extremely wide range o The gearing as a whole does beco noticeably more costly or road roller is especially suitable for sports grounds a plurality of arcuate It is possible to in reliable prescribed curved without it being necess to a great deal of the clutches disposed on the continuou designed coupling shafts are adapted to be hydraulically The feed of the hydraulic pressure medium to clutches the coupling shafts is advantageously effec at the end face and through longitudinal bores into the The for example a gearwheel for the hydraulic actuation of the clutches is expediently arrange directly on drive shaft and can be driven by the latte The particular driven wheels of the coupling shafts o the two gear wheel branches are each provided at opposi relatively close so that the gearing aa a whole occupies only a small In this it is possible to arrange the entire with its at least for the greater part in the space above the by the roils of the pair of In this good use is made of the space available on the road The engine and the gearing may be arranged in the centre between the rolls of the roll This also makes it in simple to derive the vibration drive from the The invention will now be discussed with reference to an example of embodiment shown in the Figure 1 shows the road roller to the diagrammatically and as a front Figure 2 shows a plan view of the road roller of Figure with the gearing and engine the ion being in diagrammatic Figure in diagrammatic a lateral elevation of the road roller according to the with the and the of the shafts relative to each Figure shows a end elevation of the wherein only the position of the shafts relative to each other is the section lines of the figures being Figure shows a section through the gearing taken along the line of Figure Figure 6 is section taken along the line of Figure r Figure 8 is a section along line of Figure The road roller 1 has four rolls 3 4 of which the rolls 2 and 3 and also 4 and are each disposed one behind the other in the direction of travel and constitute two roll pairs arranged adjacent and The said roll pairs 3 and mounted in a rigid frame 6 consisting of the lateral 7 8 and the transverse spars 9 and The spars 9 and 10 are approximately in the central by the tra verse spar or transverse 11 is Corresp the rolls 2 and 5 short relative to the rolls 3 and so that the intermediate spaces between the adjacen rolls relative to each Each roll pair and also 5 disposed one behind the other is by gear For the travel there is employed an engine 12 to which is connected gearing from which the roll pairs 3 or for driving and in reverse and also at varying can be controll The gearing itself has a housing 14 end and 16 and also the removable cover plate 17 The shaft as is driven by the engine 12 through the agency of the resilient clutch or coupling 19 and is mounted in the bearings 20 and 21 of the end 15 or It has gear wheels 22 and of different Gear wheel 22 meshes with Rear wheel 24 and gear wheel with wheel which are mounted by means of bearings 26 and 27 for pivoting on the coupling shaft 28 which is arranged to pivot in the ball 2 is fast with a coupling or 32 there employed hydraulically driven couplings or clutches which may be selectively engaged with the coupling shaft 2 via the feather key 33 Arranged at one end of the coupli shaft 28 is the driven gear wheel meshing with the gear wheel 35 back shaft Arranged on the back gearing shaft is the gear wheel 37 the wheel 38 mounted to pivot on the antifriction bearings and adapted to be put into rotational connectio with the coupling shaft 39 only through the agency of the coupling or clutch Disposed on the coupling shaft 39 is the gearvjheel meshing with the gear wheel of the gearing driven shaft 44 Associated with the bac gearing shaft is a further back gearing shaft the gear 35 with the gear wheel 46 of th shaft on which is arranged the further gear wheel 47 meshing with the gear wheel 48 mounted to pivot on the coupling shaft 39 through the agency of antifriction ings The gear wheel 48 is fast in rotation with the clutch 42 on the shaft 39 the clutches 41 and 42 adapted to be put selectively into rotational via the feather key with the coupling shaft Depen ing on the of the clutches 41 or 42 with the coupling shaft 39 the back gearing shaft is so that from there on rotation of the driven shaft 44 in the opposite direction of for reverse travel can The gearing connections afford one gearing driving the driven shaft 44 either for The other gearing branch is obtained due to the fac that with gear wheel 22 or alternatively gear wheel a further gearing branch is With gear wheel 22 there simultaneously meshes gear wheel mounted for pivoting on antifriction bearing The gear wheel be put into rotational connection with the coupling shaft via the clutch 31 and the feather key Also the gear 23 of larger diameter can be put into rotational via the wheel meshing therewith and via the clutch the coupling shaft the gear wheel being mounted for pivoting on the antifriction bearings Disposed o the coupling shaft is the gear wheel meshing the gear wheel of the back gearing shaft Disposed on this back gearing shaft is the gear wheel 37 meshing with the gear wheel mounted for pivoting relative to the coupling shaft 39 by means of antifrictio bearings 5 The rotational connection of the gear wheel with the coupling shaft 39 may be effected selectively by means of the clutch and the feather key Disposed on the coupling shaft 39 is the gear wheel engaging with the gearwheel of the driven shaft for the rolls on the other side of the Arranged also in branch is a second back gearing shaft for reversing the direction of rotation this gear wheel with wheel of bock gearing shaft disposed on the shaft which simultaneously carries the further gear wheel The gear wheel meshes with the gear wheel be selectively put into rotational connection with the feather of the coupling shaft This means that the parallel gearing branch driving the driven shaft by appropriate actuation of the be selectiv ly driven or rearwardly first gear or also forwardly or rearwardly in second Disposed on the gearing driven shaft is a gear wheel 57 meshing with a further central wheel With this gear wheel mesh the gear wheels which drive the gear wheels and fast with the roll 2 or In a similar the gearing driven shaft through the agency an wheel 57 t central wheel via intermediate wheel 59 or on gear wheel 61 or for driving the rolls 4 or The clutches or and mounted on the shafts 28 or and also the clutches 41 and 42 or and mounted on the shafts 39 39 are advantageousl hydraulically actuated clutches the plates 57 of which may be controlled by of a pressure pressure for engagement or For this purpose there is employed the pump advantageously a gear wheel which may be driven directly from the gearing input shaft 18 via the connecting or socket the 63 extend conduits 65 and 66 to the clutches and conduits 67 and 68 to the clutches and conduits 6 and to the clutches 41 42 and conduits 72 to the clutches and Tho coupling shafts have centra corresponding to the through which the medium is fed to the individual Contro which may be combined on the upper gear plate control levers for engaging the speeds displaced individually into the various One control leve is sufficient for the two clutches disposed on a single if the control lever is adapted to be displac from the neutral position in the one or other In this it becomes possible to manage with half the number of control levers relative to the of clutches In this the control levers may as is displaced appropriately in accordance with th desired direction of The clutches for the individual types of moveme of the road be controlled in the following for of the road roller first the clutches 3 and and also and are where for reverse travel in first gear the clutches and 3 and also 42 and are to be If it is required to travel forwardly in second gea the clutches 2 and also 41 and are to be whereas in the case of reverse travel in second gear the clutches and and also 42 and are to be If the road roller required to rotate the spo then it will be for forward travel towards the to clutches and and also 41 and an for reverse travel towards the clutches and 31 and also and whereas for rotating on the spot forwardly and towards the clutches 31 and and also 42 and towards the clutches It to travel on using the speed for the one or other driven shaft 44 or For travelling on curves towards the left and clutc 32 and 41 and must be the hand roll pair rotating at a lower speed than the roll For travelling on a curve towards the left clutches and also and b kept If it s required to travel on a curve towards the the roll pair travelling at a higher spee than the roll then for forward travel towards the right clutches and and also and 41 must be whereas for travel on a curve rearwardly and towards the right clutches and also and 42 be kept Irrespective of the kind of travel or the or travel direction of the roller having the gearing described it is found that each roll remains directly gear so that steering of the road roller is accurately in particular with to on and no roll is entrained whils slipping or The otherwise conventional different which the system more is unnecessar The gearing described also be small and In every spur gears The togeth with the constitutes a structural uni he clutches requiring no separate space since they are dispos directly on the coupling shafts carrying the gear Tho space between gear on the coupling shafts that so supplementary space is required for the This the gearing as a whole no kind of difficulty is involved on a third or fourth so as to afford still further select possibilities for the size of the curves during travel As a a road roller having two is found to be The engine the for travel drive on one side may be provided on the other side with the for the vibration drive of the From the aspect of space the gear shaf be readily so combined that the gear housing is to a considerable extent able to extend the space availabl in each particular instance between a pair of the space between the front or rear With this arrangement the gearing arranged at a relatively l This applies also to the engine disposed so that the road roller whilst taking accou of drive be constructed to be relatively The use of the gearing is not limited to road rolle It is suitable all vehicles the crawler tracks the like of which are rigidly mounted on the O on for example ferry boats having at least one screw on each the gearing suitable for improving the y of the ferry insufficientOCRQuality

Claims (1)

1. four in a of which Bold rolle tiro rolls one behind the in each particular in the direction of travel are adapted to driven jointly and independently of the pair of rolle adjacent thereto in the axial for forward travel and characterised that there provided the drive of the two rolle pairs a of gear wheels and clutchea from the single drive ehaft of two gear wheel branches extend each to the via a coupling ehaft provided with two changeable drive shaft being provided with gear having different a further clutch ehaft having two changeable dutches being arranged between said drive ehaft and each back gearing for said clutch shaf each of said clutch shafts being associated with a reversing back Hoad roller according to Claim characterized in that shafts bearing the clutches are provided each with only two gear with Hoad roller according to Claims 1 or characterised in that the nounted on the continuously designed clutch shaft axe adapted to hdraulically and in that the for example a gear wheel for hydraulic actuation of the clutches arranged in extension of the axis of the drive shaft and is to be Road roller according to any one of 1 to characterised in that feed of hydraulic medium from the to the clutchee at the clutch shafts is effected at the end face side and thruh 1 Hoad roller according to any one of 1 to characterised in that tho with arranged in tho above tho by of a pair of Hoad substantially hereinbefore with to tho tho Applicant insufficientOCRQuality