DE1959205A1 - Road construction machine - Google Patents

Description

(4 'Cf

t r ι

JtI 1 (1

Patent attorney

K a r I A. B r o s e

Dipl .-! Ng.

D-8023 Munich - Pullach
Wisn3rsir.2, LMchn. 7930570,7931782

VRA / Fo Munich tuilach 21 November ¹ 1969

Gases 2649

BLAJ IQTOX COMPAIiY, Mattooir, Illinois, USA (.inaoh l-L ^

Road construction machine

The invention relates to a road construction machine with a ¹ AnzoM joxi IY-J mourning, which are mounted one behind the other on a Dx * frame.

By ax the present invention is basically to achieve ^ j.'d -.- Ti. that the load on the running wheels of the construction machine is changed in order to take advantage of the increasing weight, Club d ^ r Boaen before the running wheels '.-. ba must do when the soil LbX' ^ itb, -or was compacted. In particular, the rolling resistance should be applied to the running wheels in such a trailing machine for processing cement or asphalt ^. ; bg '; oetzt north.

, Jbraßonbaumasch'inen to the gentleman / belle ·!} A.] · Asphalt .are .are well known. -B: .- i these machines will be the Gc-weight , iiü - / ürderen end supported by ulri Drohgesboll with four wheels. The front wheels on each j ^ iUe of the bogie lau - "'un about don 'essentially undeserved-bun ground, and the after- ■ The following back tex> en Lau i.'r.vidoi fronted floor. Box do '· well-known otrußenb-jum -.' Jchine is the Di "ehgeabülJ an d (; m II? -up dream of Mascijlne attached by a // ropes that are in dux · with be between the running wheels liugb. This means that the vox "their Lnu.fräder des Drehgfiotells oimai wec ^ / iblicli greater rolling resistance

009828/103 A BADORiGINAt

doii. Laben els the rear Laufx-veins and that is quite large. _: ^; ■. :.

The invention therefore lies in its own right. based on creating a road construction machine in which, for a given weight, the. on the front, disproportionately. soft ground running. The collision resistance exerted by the running wheels is reduced compared to known arrangements, which means that the force is lost. , sets wi-rd ,, the controllability is improved and a .fundamental Improvement in efficiency is achieved.

Another aim of the invention is to create one corresponding road construction machine in which the rolling resistance taid. . as far as -tfle is lüuglichherobgeüetzt, xrob.ei the load distribution and the degree of compaction of a soil with different! Output density. Is taken into account. .., '-.'. '.

Another objective is to increase the storage capacity of the drive wheels when Bevvcgen on e _s INEM soft ground. This is basically done by the fact that the weight normally absorbed by the front running wheels, and in known arrangements, is partially transferred to the rear running wheels. ViOdUi ¹ Ch the penetration of the front and rear running wheels is adjusted to aneiiicinder. · ... "· ': -

Another object of the invention is to provide a Road construction equipment of the type mentioned at the beginning, in which the> The excess amount stressed by the impellers is reduced.

Finally, another aim of the present invention lies in the creation of a road bifurcation machine of the type mentioned at the beginning, in which a large pivoting movement; the front wheels is possible to make the movement possible; improve this machine over soft terrain. : ■■ '■ .. ■. ^y '■

009828 / 103Λ

Further advantages and details of the invention are from Drawing can be seen in which the invention is illustrated using an exemplary embodiment.

It shows:

Figure 1 is a side view of an embodiment form

a road construction machine according to the invention;

Fig. 2 is a schematiscre view of the front running wheels ■ Λ of FIG. 1, wherein the forces that the

: Cause rolling resistance, are illustrative; and

FIG. 3 shows a view corresponding to FIG. 2 .jedoch ■■ '..' an arrangement belonging to the state of the art, where also the rolling resistance forces which are applied to this known arrangement.

The same parts are given the same reference symbols in the individual figures designated.

The road construction machine 10 shown in Fig. 1 for the production an asphalt or tar pavement consists of a main frame 12 with a container 14 at the front end and a surface enformelement 18 at the rear end. This surface feature is attached to the main frame by a frame 18. The details of this frame 18 are with respect to the present one Invention not of importance. A driver's seat 20 and a drive 22 are also provided. '

In normal operation, the road construction machine moves under Based on the illustration of FIG. 1 from right to left. The Asp'ir -.'-. T for producing the road surface is in. · ■ · c-in the container 14 and through a suitable conveyor system

0 0 9 8 2 8 / T 0 3 U BAD original

IJ t

for example a plate conveyor conveyed backwards. : 'A section of the return line of the conveyor is "changed at 24. ■■ ' - '■■ scbauliclit. The conveyance takes place -to a facility: 26 for. ■ \" . : .llflächenformelement 16 .. The support on: the road takes place :; . by a large s- rear wheel 30 and a bogie; 32 .. / · .:

■ '. This bogie is supported by a corresponding subframe;: .34 formed who; by suitable means, for example a '.

_; Wave 36. sch vienkbär with a Te r lengthening 3 & des; Main frame.;.: 12 is ally. At. ... your "- HiIfsrahmen de * s rotation gesture Ils 32; ', Ii int he other, he wheel drive lying 40 and 42, arranged that, ^·:;

; / for example, white.se.can.be. rigid. The two .impellers .40 and '.-. -42 have essentially the same diameter. ¥ e-. .. '.. ■ / ,. thereafter cursed -the: appropriate. Impellers, with each other and. "-.- '■ -.- .: additionally with the rear wheel. 30. The opposite side. .- _:

y. the machine is the mirror image of the 'side shown.'>;; ■ ■: '■;.;

. .Ss is closed. Note that dd.e Schxvenkverbindung between the _..:. y \ \ - Bogie .jund the Ha up tr mimic, for example, the shaft p6 "■ -) ^_'::, i] .... to:" a point is arranged closer to ^r the rear ■■■, '■ \. ■■' / ■ -. . Wheel; 4-2 as ^: an. üeai front wheel 40 is located. ; _: ^. ^: .:. ' ^: ' ^: - ^:: ~ :: <? :::

ObÄvohi ^: -, it- is not possible to be precise. The ory to set up:, · .; ■.: ".- ;: ■■. On 'which; the present invention is based, since; for example-- ^] .'- this .l understanding of soil mechanics is. ■ ;; following eine'Erklärung the; basis .the present _invention; tried; ■ be '·': ^'v'. ■ · '■ - ■■. ■; ■■' - '^ - ' -. " ^:: . "■ ■ · .- '■ ' ■ ^: . ^: .". ' ; -'- '^'; ■■ '' ^■:; "^ ^{i ^;} .-; ^;

: From "Fig. 2 and 3 ίs-t 2ü infer that the non-compacted ;; ■: soils" with ,; 44, the; pre-compacted soil with 46 tuid: the final ;; ^ ¹ Mdiclifete.Bödeii.ffli-t48 is designated. In the pre-compressed _^■:::: These ground; it; about. deja., over: the front> impeller 40: ■ _; vX-: .rolled: is; t ;. Listen-ready compacted soil 4Ö is; ^ additional borrowed;.; v ^ v: the 'rear. Runner 42 rolled over and: thereby the <

BADORiQlNAL

total load, which - also-additionally - through the bogie was transferred.

The representation of the B ¹ Ig. 3 a known suspension of a bogie is based. With this suspension, the V7ülie 36a lies in the middle between the centers of the front and rear wheels. As a result, the front running wheel 40 takes up one half of the weight W that rests on the bogie and the rear running wheel 42 absorbs the other half of this weight W. The weight W is divided into two components W / 2 in Pig. 3 shown; in the middle of the Laufx arteries 40 and 42.

Since the front impeller 40 is continuously in contact with the loose, at least compacted soil, this wheel penetrates relatively deeply into the soil, which is expressed by the dimension 50 in FIG Arc contact /, wipe Lau-frad 40 and the ground). The reaction forces transmitted from the ground to the front wheel are denoted by 52. It is, of course, understood that, in reality, any increase in the area of the ground presents the wheel with resistance to its movement, these will be used to simplify the description; entire, hardening small and indefinite forces u üu a single.!. Force summarized, which in turn on the impeller in rv.-oiaier. Direction acts, "./!.^'ioruifl for the sake of simpler representation 7 / ird the oinzigu force 52 is split into a vertical component 54 and a horizontal component 56. The oeiiLreoLte Eomponoiitü corresponds of course to the GowichI:; -juf diu Middle dos HadeL, 'ih ^: .//2. The size of the horizontal KoLi ^ uriOirtü 56, di ^ f.-lü .Cy büzoichnet.ict, depends on the density and dor Verdichtuiig do;.; Booeiiij and next to faidej. -on factors- · on the-.vuf dom impeller larjtöuden weight.

Touching the rear wheel is similar 42 with the compacted bottom represented by the radian dimension 60

0098 2 8/1034 bad original

represents. V / i e of the order. becomes the sum of the individual, not to be recorded Forces that act on the surface of the impeller, summarized by a single force 62, which is directed in the radialex * direction towards the center of the impeller. This force 62. Can in turn be divided into a vertical component 64 and a horizontal component 66 ^ which is referred to in the same way with r ^ is. Again, the perpendicular component 64 corresponds to the ■ Weight W / 2 that is placed on the center of the impeller. The size of the rolling resistance force r. is less than the force r ^ des front impeller 40, there. the area of the ground with which the impeller 42 is in contact is significantly less than that Area of the ground with which the front wheel 40- is in contact. In other words, the wall of the ground that the rear Wheel 42, must run up, is less than the corresponding height the wall of the ground that the front wheel 40 must be moved up, since a pre-compression by the front impeller 40 has already taken place. Since the depth at which the rear wheel sinks in next to depends on other factors on the density of the ground, the rear wheel will not sink as far as for a given weight the front wheel.

It should be noted that the sum of the rolling resistance forces r 1 and r 1 is essentially due to the fact that the front wheel 40 sinks much more strongly into the ground than. the rear wheel 42.

From Fig. 2 it is now clear that with the same total weight W the sum of the rolling resistance forces x ^ is considerably less than the sum of the rolling resistance forces in the known system according to Fig..3.

In particular , when looking at FIG. 2, it becomes clear that the front wheel 40 is in contact with the ground via an arc 86 which is significantly smaller than the corresponding arc of the front wheel in the known system according to FIG.

- '

· '·' '"" ·' 0 09828 /

due to the fact that the weight dae on the front wheel 40 of Fig. 21 weighs only two thirds of the weight 'IUj' 'is the load on the α wheel in the known system according to FIG. 3'. the The decrease in weight on the front wheel 4 of FIG. 2 is due to the fact that the shaft 36 through which the bogie is attached the extension 38 of the main frame is attached starting from your midpoint au., a line connecting the two wheels staggered ". In particular, if the running wheels the same diameter on iron, the l / elle 36 becomes closer to the lower impeller 42 arranged alu *: ii your front impeller 40, ™ it being assumed, to facilitate the explanation, that the Distance of the UeHe 36 from the center of the rear impeller 42 only half de: "Distance between this UeHe and the Center of the front wheel is 40.

At the same time, the weight that is transferred to the rear wheel 42 of the system according to FIG. 2 is 1 1/2 times the weight on the corresponding wheel 42 of the east part of FIG. 3, so that The rear impeller 42 of FIG. 2 sinks further into the pre-sealed ground than the rear impeller 42 of FIG is as ΰοϊ Berührungo- ä area above the. Arc 60 of FIG. 3, the sum of the rolling forces which counteract the movement of the bogie according to FIG. 2, ie the sum of the forces T ₇ and r _{Q is} less than the sum of the forces V ₇ and r _Zj the system of Fig. 3 must be overcome.

It is further understood that, although the behavior of the j compacted soil to jeute? Not fully understood, '\ that the better results, caused by the present invention knows "the, characterized caused that the depth of .the Bodenvei-diciitung to the not directly proportional to him · '■ is transmitted by weight. floor greater density, that is the bottom of the-ready is compacted vo.l is relative to a "reference ground" wenige- st / jrk compressed or compacted as a. ■' .

009828/1034 _BAD

- n

1 I.

S 3

fit Il

not in the forefront of pre-compacted sod.

The optimal one. The suspension of the bogie shaft depends on tj.uxon. Factors, including the compaction characteristics of the soil, the size of the wheels and the speed of the vehicle. It may also be recommended, if necessary, to reach the door parts that are brought about by the present invention with a three-frame shaft which, according to "Ui", lies between the center point between the Ieui'Tviderachsen , tienn the front wheel einon larger Ourchaiosser aui "'./^iüt;.? .. 1ό the rear L ^ ^ -ufr d, from gestures by experiments could n ^ .C ^ pointed i / ^, d- ß the rolling resistance : - · ^ of the front wheel depends on the contact area or contact arc between the floor and the running wheel. From this it follows that the conditions in relation to a bogie must be adjusted and adjusted so that the distance z -.- is the swivel gesture 11.-hurry and geder L ^ ufr ^ -dachs must be done in such a way, dr, ß a lainiiaale roll -.- iaerst ^ nds— krait for given conditions a. s Jystesis, to which ο ic Liu.fre.d size, the terdichtungücho-raiLterictiken of the soil taid the speed dor Bc i ^ -unr; der L _-. UlVädoi · ilbeyäcn Βο ^^, η geiiüren. '-OrLundfcn is. Bti ecu pr; .ktiocLen execution ^ bcicpiel, I' ζ im. Essential to ex "-I; 1 ^: 5 .: vl ·. :: ^ and Yo.VE.och'.ulichung, · the invention £ .usge _; ; counts in ^ rde,; ^r cist anterior and posterior l ^ uir ^ dc- · have the same diameter: .ax ', and the advantages of the present invention "..erden thereby achieved posterior. Li-.ufr- d ^^ ^ n aer axis d &s.> ocde ren L-ufr; .. des lies.

All technical details shown in the description of t-rkennbr reu and in the drawing are essential for the invention. significant.

009828/1034 BAD original

Claims (1)

Pmi? "'Ηι'"'-'TP"τη?
χι.Xi ^ iv LuujI IXu ¹ J-IjJj V. \ JZ t L. ..uttiib- .. uun schine iui t.-Inoi * number of L-iuIx-urtwL-ii, the Ij i ii.L ^: .-.- vjiii..riai_-r -ingeurdn / -υ üirid and eiut ^ ii Dreligebt-v .-.!.!, ^ n Ί ^ αι Ui ,. . Ζι. ".- · Λ>: ^Α: '-', ϊ1.έ attached; ^ inc ^; ,. above the attachment of the rotary ^ •.; ..- tf.'LIr =. η an H-: uptr.iimen ^: .ibcr an äacii · .. end connection er -.,. o ':. £' u, d- uui'cb ge Ic e η η -deici: net, d-ß die Schvferik - / ■■■:? Bindang (36) dervrt in relation to putty.Ipunkt z-vischen den ™ L'Ui-xv: dem (40, 42) • ■ .ngeorlrn -.- t i-; t, d .- '. Ss el'>.; · Ssumiae dor Rollwiüür -. / Ij-nah.T.krü.ite, die durc-u die Ii ¹ Adex- at Bc -. '. Ogung "over a not r / i; .. j.'1'en Soil produced ,, fti-aen, ii, i rSöenfcii.iien aui ¹ a minimum; /> ^: i - b -.- n is. -. Μ ·; c ο nine n ^ ch claim Ί, d: durc "j giikennzeicnnet that the '.10.I ₁ · ngi-jorderen.L? ui'rilder (42) a larger proportion of the .on .Ie.iu Il-' vuptrt.hmen ^(12):;. bör the Schrfenkverbinöiing (36) on π ..-; D.L '-.- tigfsstell (34) dbe.rb.L'agenen Gev / iclites receives the ice / ο · call. ■ "-n L" on wheels (40). 3rd K ^! -serine according to claim 1, characterized in that two | back egg. · 3 in; nder arranged; L'-UL'riiderp .- ^ 're (40, 42) provided, jindj ο,; The diameter and width of the impellers are designed in such a way that each impeller with a given weight produces the same imprint in a single body of uniform service; and ά.-1 fs the turning gesture!.! connection · (36) closer to the rear L ^! 'ui "-ro.dp-i-'jr (42) -lays' than on the front (40). /. In addition to one or more of the preceding claims, characterized in that, in addition to the Laulwädorn (40 and ■■ k), a further running wheel (30) is in front of the machine, wherein the impellers (40, 42) with respect to their i diameter and the connection (36/34) with the main fame> .n (12) are arranged that. .the ournme of the Hollv / idei-Ktandskräf te, the 0099 2 8/1034 ^BAD -Aq- ■ generated by each impeller ,,, s ui "öi-neia ItittimaiMi held · is. . . · ■ - ■■ ■. '■ · ■' ■. ■■■■■ '■ -. ; . "-'-- ■■: '''' ■ '■ ■ . ·. · ■; - ■' .. 5. Machine -according to claim 4, characterized gekennseieüueifc that the Connection (36) of the bogie (34) with de »¥ auptiraiinieii .. (12) closer to the rear wheels (42) than en aen. ^ orde ^ ea ".Ii on-wheels (40) lies. .. ■ '- ..,:.; ..;,, .. V 6. Machine according to claim 4 or 5, .characterized in that the 'connection, .between .your bogie (54 ·) and deia main frame ¹ (12) is formed by a V / elle (-36) , nm üe .einG limited 'movement on a floor of the bogie ¹ 3ta 7. Machine according to claim 6, characterized · gekennseiclinei; that the running wheels (AO and..42) are rigid wheels ¹ -. ■ ' _: . 9828/1034