Патент USA US2412755код для вставки
Dec. 17, 1946. v`v. w. sLoÀNE SHUTTLE CAR Filed 001'.. 28. 1943 m 2,412,755 3 Sheets-Sheet l Dec. 17,` 1946. W. W. SLOANE SHUTTLE CAR .Filed oct. 28, 194s ___ ____ ____ ___„_|_..= 2,412,755 3 Sheets-Sheet 2 Dec. 1,7, 1946. I . w. w. sLoANE SHUTTLE CAR _Filed oct. 28.' 1945 2,412,755 Patented Dec. 17, 1946 2,412,755 UNITED STATES PATENT OFFICE 2,412,755 SHUTTLE CAR William W. Sloane, Chicago, Ill., assignor to Goodman Manufacturing _ Company, Chicago, Ill., a corporation of Illinois Application October 28, 1943, Serial No. 507,928 1 5 Claims. (Cl. 280-87) 2 This invention relates to improvements in shut tle cars adapted to transport coal or other ma terials from working places of mines underground. Shuttle cars operating in mines underground usually consist of a material carrying body sup ported on rear driving wheels and front steering Wheels. The bottom of the material carrying compartment of the body is deñned by a con» veyor extending along the car quite close to the ground, and spaced a considerable distance be low the axles of the steering and drive wheels. The steering wheels are mounted on Lemoine pivots in the usual manner, so the inner wheel turns sharper than the outer wheel. Since the wheels turn about axes spaced inwardly of the wheels, the major portions of the wheels turn into instead of away from the body durirg steer ing and thus restrict the Width of the material carrying body of the car, recessed between the wheels. On account of space limitations under ground, the capacity of a car is limited when using the conventional type of steering, and in mines of low head room has probably reached its maximum capacity. The objects of my present invention are to pro vide a novel form of support and steering arrangement for the steering ‘wheels of a shuttle car arranged to increase the capacity of» the car n Figure 3 is an enlarged fragmentary view in side elevation, with certain parts shown in lon gitudinal section, in order to illustrate certain de tails of the steering connections for the front steering wheels; Figure 4 is a transverse sectional view taken substantially along line 4_4 of Figure 2 ; Figure 5 is a fragmentary transverse sectional view drawn to the same scale as Figure 4, and 10 showing certain details of the mounting for one of the front steering wheels on the body of the car; Y Figure 6 is a fragmentary transverse sectional view illustrating certain details of the steering 15 connections for one of the front steering wheels; and Figure 7 is a View diagrammatically illustrat ing the booster cylinder for steering, and the fluid connections thereto. 20 , Referring now to the details of the embodi ment of my invention illustrated in the draw ings, a coal haulage vehicle or shuttle car is in dicated generally by reference character I0.. Said shuttle car consists of an elongated material 25 carrying body II having a pair of vertically dis posed laterally spaced side walls I2, I2 extend ing for its full length and forming the side walls of the material carrying compartment of the car. over` former shuttle cars, by making it possible The bottom of the material carrying compart to provide less clearance between the sides of the 30 ment of the car is defined by a conveyer indi body of the car and the steering wheels thereof, cated generally by >reference character I5. u so the width of the material carrying body of the The material carrying _body II is supported car may be increased without increasing the over on two rubber-tired drive wheels I6, I6 near `the all dimensions of the car. rear of the car and two rubber-tired steering A more specific object of my invention is to 35 wheels I1, Il near the front end of the car., p ` provide a new and improved steering arrangement Steering is effected Iby a steering wheel I8 in for a Vshuttle car including a mounting for the an operator’s compartment I 9 near the front end steering wheels, so arranged that the wheels will bodily turn about axes spaced outwardly from their outer sides, so that a greater part of the turn ing movement of the steering wheels will be in directions away from the sides of the car. Other objects of my invention will appear from of the car, to one side of the conveyer, in a man ner which will hereinafter more clearly appear as 40 this specification proceeds, The general lcon struction and arrangement of said body is similar to that shown in application Serial No. 456,165, iiled by William R.. Beck on August 26, 1942, now Patent No. 2,336,386, so need not herein be shown ceeds and with reference to the accompanying 45 or described in detail. drawings wherein: The conveyer I5 extends for substantially the Figure 1 is a diagrammatic plan view of a shut full length of the vehicle so coal can be unloaded tleA car constructed in accordance with my inven mechanically from one end thereof, and is herein tion; shown as being an endless ilight conveyer in Figure 2 is a fragmentary plan View of the front 50 cluding a pair of parallel spaced endless chains part of the car, with certain parts broken away 2li, 20 having a plurality of parallel spaced flights and certain other parts shown in horizontal sec 2|, 2l mounted therebetween. Said endless tion, in order to illustrate certain details of the chains and iiights extend from idlers 22, 22 near support for the :front steering wheels, and the the receiving end of the car along a bottom plate steering connections therefor; time to time as the following specification pro 55 23, connected between the side walls l2, ,I2y and 2,412,755 4 Y in turn is meshed with a spur gear 85 on a ver forming a bottom for the conveyor, to and around drive sprockets 24, 2t on a transverse shaft 25 at the discharge end of the car. From thence said chains and flights extend beneath the plate 23 along a bottom plate 26, forming a bottom for the body of the car, to and around the idlers tical shaft 86, journaled adjacent its upper and lower ends in a bracket S1, projecting forwardly 22, 22. from the forward end of the bracket member 13 (see Figures 3, 4 and 6). A spur pinion §38 is secured to said shaft, beneath the spur gear S5, and meshes with and is driven from a rectilinear rack 89, slidably guided in an outwardly facing shown as being mounted on the outer side of the formed integrally with the bracket member 13. side wall I2 opposite from the operator’s com partment I9. Said drive motor is suitably con wheel I8 through a power steering booster indi nected to said drive shaft through a worm and worm gear reduction (not shown), in a casing generally indicated by reference character 3l and ' a chain and sprocket drive 32, driven from the worm gear of said worm and worm gear reduc-> power steering booster may be of a form well known to those skilled in the art and is no part of my_present invention, so will only herein be described in so far as is necessary to make my The drive sprockets 24 and conveyer I5 are suitably driven by an electric motor 28, herein channelled guide 93, herein shown as being The racks 39, öë are operated by the steering cated generally by reference character S3. Said present invention readily understandable. The tion. steering wheel l1 has connection with an oper Referring now to the novel mounting for each front steering wheel, for supporting said steering 20 ating arm 561 of the steering mechanism through a worm and worm gear (not shown) enclosed in wheels for steering movement about imaginary a housing 95. Said operating arm is mounted on lpivotal axes spaced laterally from their outer a transverse shaft 96, journaled in the housing sides, so a greater part of the turning movement 95, and depends from said shaft and has a bifur of said wheels will be away from the body of the cated lower end 91, having operative connection bar, when turning the car in either direction, with said power steering booster 33, >for operat each steering wheel I1 is slidably guided on a ing said booster (see Figures 4 and '7) . As here bracket member 13 for movement therealong. in shown, said bifurcated lower end of said arm Said bracket members are secured to the outer sides of the side walls I2, I2 near the front end has slidable connection with a pair ofv spaced of the vehicle, and project laterally therefrom 30 studs S8, 93 projecting from opposite sides of a ball-shaped operating member 953. Said oper (see Figures 2 and 5). The mountings for each ating member is slidably mounted in a sleeve steering Wheel and the steering connections there Iiiü and operates a valve lill, which controls the forl are the same, so the mounting and steering passage of fluid under pressure to the head and piston rod ends of a cylinder |03. Said valve and sleeve are herein shown as being slidably mounted in an integrally formed rearward extension itil connection for onewheel only will herein be de- ~ scribed. As herein shown, the bracket member 13 has a pair of vertically spaced oppositely fac ing horizontally extending arcuate guide portions of said cylinder. A piston Iäii, in said cylinder, has a piston rod §06 projecting therefrom. Said 14, 14, which are of a convex formation when looking towards the side of the car'. Said guide piston rod is secured at its outer end to a member Iß1, secured to a forward end wall of the oper portions are adapted to be engaged by vertically spaced facing channelled guides 15„15, formed ator’s compartment, so that the entire cylinder will move along said piston rod upon the admis sion of fluid under pressure to the head or piston rod ends of said cylinder. A 'boot Itß, which may be made from leather or any other'suitable mate integrally with a support bracket 16 for an axle 11 for the front steering wheel I1 (see Figure 5). Said front steering wheel may be of a construc tion somewhat similar to the rear drive wheel, ïand as herein shown, is provided with an'internal brake drum 19 adapted to be engaged by the rial, encloses said piston rod end of the cylinder, to- permit said piston rod to be lubricatedand to usual brake shoe (not shown). ' prevent dust or dirt from accumulating on said The guide portions 14,'14 of the bracket mem piston ber 13 and the channelled guides 15, 15 of the i support bracket 16 areV so formed as to» slidably Vsupport the steering wheel l1 for movement about of the wheel, so that Said wheel will move away ' from the body of the vehicle during the steer- a ing operation, instead of inwardly towards the body, as is usual in conventional forms of steer , ' -> ^' Said pump may be of any well known type and is herein shown as being driven from the rear end of the motor 29. A pipe II3 connects said pump with a fluid storage tank III; A pipe Il4 leads from said pump to said valve lill in said cylinder. A return pipe H5 leads from said valve IBI to said iiuid Istorage tank. Said valve is operated by the GI) operating arm 94 and operating member 99, as shown as being plain bearings although it is obvious that other bearing means such as a plu rality of spaced rollers may be substituted for said bearings, to reduce frictional resistance dur ing steering, if desired. ‘ valve IllI by means of a pump liti. a pivotal axis spaced outwardly from the outside ing. Channelled bearings 853, 8i] are interposed between the guide portions 1&5, 1Q and the chan nelled guides 15, 15. Said bearings are herein rod. Fluid'is supplied to the cylinder Iil3 through the ' The support bracket 16 is moved along the arcuate guide portion 14 of the bracket member has been mentioned before, and is arranged to supply fluid under pressure to either the head or piston rod ends of said cylinder, in a manner well known to those skilled in the art, upon the “ turning of the steering wheel in one direction or another. An arm IIS is secured to and extends rear' 13 for turningthe wheels during steering, by wardly from the rearward extension IM» ofthe means of an arcuate rack BI secured to the in- ' the rack 89 pivotally connected thereto, for slid ably moving said rack in the guide 9û. The arm' IIS is provided with an inwardly extending por tion. I2ii, having 'a link IZI pivotally connected thereto. The opposite endof said.v link is’pivotally side of the support bracket l5, as by cap screws '82, 82 (see Figure 2). Each arcuate rack 8l is meshed with a rectilinear rack t3, slidably guided in an outwardly facing channelled guide ät, formed in a bracket member 13, intermediate the upper and lower ends thereof. Said arcuate rack cylinder |03. Said arm has the forward vend'of connected to an arm I 23 of a bell crank |24. Said fis :2,412,755 `bell crank, as herein shown, is pivotally mounted racks guided for rectilinear movement lalong said von a vertical pin |22, which is mounted on the side walls, means for rectilinearly moving said underside of the plate 23in a bifurcated bracket racks, and. arcuate racks meshing with said rec |25, `secured to the bottom ofsaid plate. The «tilinearly movable racksand having operative -other arm‘of said bell crank is pivotally connected f Ul >connection with said axles for turning said axles to an arm |26 of a bell crank |27 by means of a link |29. ‘ Said bell crank is mounted in a bracket `about said imaginary pivots. HI30, on the underside of the bottom plate 23, nation with a material carrying body having lat erally spaced side Walls with an endless conveyer mounted between said side walls and forming the bottom ofthe material carrying compartment of `said body, a pair of `steering wheels at opposite sides of said vehicle, axles for said wheels dis~ posed a substantial distance above the lower end of said body, and mountings for said aXles 0n said side walls for supporting said Awheels for'bodily movement about imaginary upright pivots spaced outwardly from said side walls and the outer in a `manner similar to the bell crank |24. Said last mentioned bell crank has an outwardly ex tending arm |31 which is connected with the righthand rack 89 by means of a link |32. The arrangement of said vlîl’lks and racks and pinion‘s is such that when the steering whee1 i8 is turned in a direction to turn the vehicle-to the right, fluid under pressure will be admitted to the piston rod end of the cylinder i |13 through the valve IDI , to move said cylinder and the left-hand rack 89 towards the rear of the vehicle and move 2. In a wheel mounted vehicle and in combi ends of said axles, so a major portion of said the right»hand rack 89 towards the forward end 20 wheels will turn away from said side walls dur of the vehicle through the bell cranks |24 and ing steering, said mountings each including a |21, to turn the two wheels in a comin-on direc supporting member mounted on the outer side tion, but at different angles, so both wheels will of one of said side walls, each of said supporting positively turn the vehicle in the desired direc members having a pair oi’ vertically spaced arcu tion without skidding. ate guiding portions, a bracket extending inward When it is desired to turn the vehicle in the ly from each oi said axles and having a pair of opposite direction, iiuid under pressure is ad vertically spaced portions adapted to register for mitted to the head end of the cylinder |03 by slidable engagement with upper and lower guide turning the steering wheel to the left. This po portions of one of said nrst mentioned guides, sitions the valve IUI to admit iiuid under pressure and means having operative connection with said to the piston rod end of the cylinder |93, and axle brackets for moving said brackets along said move said cylinder and the left-hand rack 88 towards the forward end of the vehicle, and move the right-hand rack 89 in an opposite direction, to turn the left-hand wheel at a sharper angle than 5 the right-hand wheel, to compensate for the dif ference in radius of curvature of the path of travel of the two wheels. It may be seen from the foregoing that the guided for rectilinear movement along the outer sides of said side walls, arcuate racks meshing with said racks and having operative connection with said axle brackets, and means for slidably moving said reotilinearly movable racks along said body for turning said axles and wheels. guide portions 1d, 'i4 and guides 15, 'I5 are so ar- " nation with a material carrying body having out ranged that the direction of turning of the steer ing wheels is outwardly from the body of the vehicles about arcs, the centers of which are spaced outwardly from the outsides of the wheels, and that this permits the side walls of the vehicle, recessed between the wheels, to be widened a dis tance equal to the space required for conventional 'steering Iwhere the pivots of the steering wheels are spaced inwardly of the insides of the wheels, without increasing the overall width of the ve- " hicle. While I have herein shown and described one form in which my invention may be embodied, it will be understood that the construction thereof and the arrangement of the various parts may ' be altered without departing from the spirit and scope thereof. Furthermore, I do not wish to be guides, for steering the vehicle, including racks 3. In a wheel mounted vehicle and in combi er side walls and a pair of front steering wheels, axles for said wheels, means for mounting said wheels and axles on said side walls for bodily movement about imaginary upright pivots spaced outwardly from said side walls and from the out er ends of said axles, so a major portion of said wheels will turn away from said body during steering, including arcuate supporting guides on opposite sides of said body and slidable support ing and guiding connections between said axles and said guides, spaced inwardly of said wheels, and interengaging means rectilinearly movable in opposite directions along opposite sides of said body and having operative connection with said axles for simultaneously moving said axles in opposite directions along said guides to turn said axles about said imaginary pivots, to steer the vehicle. construed as limiting my invention to the spe» 4. In a wheel mounted vehicle and in combi ciñc embodiment illustrated, excepting as it may (it) nation with a material carrying body having »out be limited in the appended claims. er side walls and a pair of front steering wheels, I claim as my invention: axles for said wheels, means for mounting said l. In a wheel mounted vehicle and in combi wheels and axles on said side walls for bodily nation with a material carrying body having out movement about imaginary upright pivots spaced er side walls and a pair of front steering wheels, outwardly from said side walls and from the outer axles for said wheels, means for mounting said ends of said axles, so a major portion of said wheels and axles on said side walls for bodily movement about imaginary upright pivots spaced outwardly from said side walls and the outer ends of said axles, so a major portion of said wheels will turn away from said body during steering, ‘ including arcuate supporting guides on opposite sides of said body and slidable supporting and guidingr connections between said axles and said guides, spaced inwardly of said wheels, and means for turning said wheels during steering including wheels will turn away from said body during steering, including arcuate supporting guides on „te sides of said body and slidable support ing and guiding connections between said axles and said guides, spaced inwardly of said wheels, and means for turning said wheels during steer ing including a member rectilinearly movable along each side oÍ the body of the vehicle, an operative connection between each of said mem »2,412,755 7 'bers and its respective axle for turning said axles about their imaginary pivots upon rectilinear Amovement of said members, a steering wheel for >rectilinearly moving one of said members, and an operative connection between said rectilinear 1y movable members for rectilinearly moving Vthe other member upon rectilinear movement kof said one member in a direction opposite to Y the direction of movement of said one member, and moving said axles along said guides in opposite directions, for steering the vehicle. 8 vincluding arcuate supporting guides on opposite sides of said body and slidable supporting and guiding connections between said axles and said guides, spaced inwardly of said wheels, and means for turning said wheels during steering includ ing a steering wheel, a rack, an operative con nection between said steering wheel and said rack for rectilinearly moving said rack upon turning movement of said steering wheel, an interengag ing»,r connection between said rack and one of said axles for turning said axle upon movement of 5, In aV wheel mounted'vehicle and in combi nation with a material carrying body having out said rack, another rackron the opposite side of ' movement about imaginary upright pivots spaced move said secondmentioned rack in an opposite direction from said first mentioned rack upon turning of said steering wheel. said body, an interengaging connection between said rack and said other axle for turning said er-side walls and a pair of front steering wheels, axles for said wheels, means for mounting said 15 axle upon rectilinear movement of said rack, and a _connection between said racks operative lto wheels and axles on said side walls, for bodily .outwardly from said side walls and the outer ends of said axles, so a major portion of said wheels will turn away from said body during steering, 20 ' WILLIAM W. SLOANE.