Патент USA US2412554код для вставки
D¢C~ 17, 1945 v R. Q. ARMINGTON 2,412,554 .PULLEY CLEANING CONSTRUCTION Filed June e, 1945 2 shevetsfsheet 1` INVENTORJ RAYMOND Q. ARMINGTON ATTOR N EYS. Dec. 17, 1946. R. Q, ARMINGTON 2,412,554 PULLEY CLEANING CONSTRUCTION Filed June 6, 1945 2 Sheets-Sheet 2 INVENTORI H RAYMOND Q. ARMINGTON ENY ATTORN EYS. Patented Dec. 17, 946 2,412,554 UNITED STATES PATENT OFFICE 2,412,554 PULLEY CLEANING CONSTRUCTION Raymond Q. Armington, Shaker Heights, Ohio, assigner to The Euclid Road Machinery Co., Euclid, Ohio, a corporation of Ohio Application .lune 6, 1945, Serial No. 597,793 2 Claims. (Cl. ISS-229) 1 . This invention relates to improvements in pul ley cleaning construction and more particularly to the removal of dirt from the pulley of a con veyor loader working under dirty conditions. An object of the present invention is to pro vide a blade for scraping dirt from a pulley of the type described together with novel rotating spring 2 moves thereover. Embodied in this larger appa ratus is the conveyor l2 consisting of the frame i 2a, a tail pulley |212 and a head pulley (not shown), there being an endless conveyor belt t3 passing over the head and tail pulleys and driven by means at the head pulley, not disclosed here but fully disclosed and described in the copending application mentioned above. Preferably the means for carrying the dirt away. Another object of the present invention is to upper run of the conveyor passes over a series of provide cleaning means >for a pulley driven by 10 troughing idlers i4, it being understood that the the rotation of the pulley itself. dirt travels on the upper run of the conveyor belt Other objects of the invention include the novel from the lower left-hand corner of Fig. l diago construction and arrangement of the parts nally upwardly toward the right-hand end of whereby the pulley is elîiciently cleaned, the dirt Fig. l and on beyond this point to discharge into is eiiiciently carried away, and the parts are so 15 a vehicle which carres the dirt away as described constructed and arranged that they will operate for a long time Without interruption even when subjected to severe operating, conditions. in the copending application mentioned. Prefer ably also, the lower or return run of the conveyor will travel on plain cylindrical idler rolls to keep I Other objects and advantages of my invention the conveyor belt from sagging too much. Pref will be apparent from the accompanying draw 20 erably also, a dirt shed (not shown) is provided ings and description, and the essential features between the upper and lower runs of the con thereof will be summarized in the appended veyor to insure that any dirt dropping oil the claimsA ` In the drawings: Fig. l is a top plan View ci a portion of a belt conveyor adapted to handle dirt or the like show ingl one embodiment of my invention and with certain parts broken away to more clearly show the construction; Fig. 2 is a side elevational View of the device of " Fig. l with one of the beams broken away to more clearly show the conveyor; Fig. 3 is a top plan view, enlarged, of a portion of Fig. l and taken in the position of line 3--3 of FigA _4, with certain oi the parts .being shown in section to more clearly illustrate the construc tion; upper run of the conveyor will be discharged side ways out the openings l5 in the conveyor frame. This dirt shed is of a usual type of shallow in verted V-iorm in section, the central ridge of the shed running parallel with the center line of the upper run of the conveyor and the sides thereof sloping toward the openings l5 on each side of the conveyor frame. Devices of the above-described type do not operate Well unless dirt is prevented from clinging to and building up upon the tail pulley |213. To prevent this, the outer cylindrical surface of this pulley is hardened and provided with a smooth iinish, and a scraping blade i6 of hardened metal engages the surface of the pulley, as ibest seen in Fig. 4 is an elevational view or" the right-hand Fig. 4, substantially tangentially to the cylindrical end of the device of Fig. 3; while pulley surface and on the side thereof where the Fig. 5 is a View taken along the line 5--5 of 40 surface of the pulley is moving downwardly as Fig. 3. K the pulley rotates in the direction of the arrow of Certain features of my invention are applicable Fig. 4 due to the travel of the belt i3 as driven by to many types of apparatus, but Ihave chosen to the head pulley mentioned above. Preferably illustrate as one embodiment the application of the blade I6 is thin and resilient having the char my pulley cleaning apparatus as applied to a 45 acteristics oi spring metal for a. purpose later de digging and loading device which is fully disclosed scribed. inthe copending application of Raymond Q. Arm A pan i? is provided for collecting the dirt ington and George E. Armington, Serial Number from the blade i6. This pan is generally of the 593,412, ñled May l2, 1945, to which reference form oi a long hollow cylinder having a cylindrical may be had for a more complete description of the 50 wall around substantially three quarters of the loader device. It is suñìcient to state here that perimeter of the cylinder, leaving the open space digging and dirt-guiding devices generally in ila directed toward the point where the blade I6 dicated by the reference character iii herein are engages the pulley surface. The side of the lpan mounted on beams Il which cause the digging the pulley is bent out of the generally .devices to enter into the ground as the equipment 55 nearer cylindrical form to lie parallel to the blade IG amarsi 3 along the pan portion l'lb, and the blade I6 is secured to this part oi the pan. Preferably, but bracket 3J which, as best seen in Fig. 5, has a vertical Wall 3Ia parallel to the pan portion l'lc, not necessarily, the left-hand end of the blade l5, and above this an inclined portion 3Ib which is as seen in Fig. 3, is provided with a notch lSa sloped so as to form a dirt shed. opening toward the adjacent end of the blade and adapted to receive astud i8 which is fixed on the pan portion i'êb where it extends to the left (Fig. is stiifened and held iirmly in place by means of a tubular strut 32 which is welded between the bracket 3| and an L-shapedv plate 33 which in turn is rigidly secured to the part I2C by means not shown. In the inclined wall Slb is inserted a sleeve 34 which extends clear through the wall and is Welded thereto. The inner diameter of this sleeve is chosen to i'lt the outer diameter of the sleeve Hd, previously described, so as to firmly support the end of the dirt pan. The shaft 23 then passes through the sleeve 313 and through the hollow sleeve Hd as clearly shown in Figs. 3 and 5. It will be noted that the above construction permits the tilting of pan l1 about the sleeve ll'd as a pivot. In assembling the parts, the 3) beyond the generally cylindrical portion of the pan il. rl‘his stud i8 is rigid with the pan and has an enlarged head lying on the pulley side of blade lâ so as to ñrrnly hold the blade there. At the opposite end a stud bolt I9 passes through blade it into the >pan portion l'lb to ñx that end of the blade. Preferably the yblade i6 is provided with paralle1 top and bottom edges Iâb and |60, and the notch iba and the hole which receives stud bolt lâ are both midway between edges IBD and itc so that the blade is reversible. The left-hand end of pan Il, as viewed in Fig. 3, is substantialh7 closed by the end plate llc to which is rigidly secured a sleeve l'íd which sup ports this end of the pan in a manner presently described. The right»hand end of the pan, as viewed in Fig. 3, is open for the discharge of dirt, and this end of the pan is welded to a mounting flange 2l) through which pass bolts 2l to secure the same to the conveyor frame. Preferably also, an L-shaped plate 22 extends substantially the full length of the blade I6 with the longer leg of the L parallel to and engaging the blade to support it firmly. ThisV L-shaped plate is welded to the pan l'l rigidly and provides a pocket into which the blade I5 is slipped. Preferably, but not necessarily, a small portion of the top of the dirt pan is cut away near the dirt-discharge end, This bracket pan ls so tilted to move the left-hand endof scraper blade lli in stressed position against the pulley surface lZb, and thereafter the other end of the pan is secured in place by the bolts 2l so as to yieldingly press the blade H3 at all points against the pulley surface |212. It will be noted that the driving connections, previously described, and more clearly shown at the left end of Fig. 3 and housed in the gear cas ing 35, are placed far enough to one side of the conveyor belt I3 so that dirt falling from the belt is not near the driving parts. It will be noted also that all of the parts are so housed and protected that dirt does not easily get into the moving parts, and by this means the pulley is kept continuously clean, and the dirt is contin uously moved away from the parts which might be injured thereby. Referring to Fig. 5, it will be noted that any as best seen in Fig. 3, to insure that no dirt piles up on top of the pan but falls directly into the pan for discharge by the means presently de scribed. 'I‘he means for discharging the collected dirt 40 dirt falling off the upper run ISa of the con veyor belt will be deflected by the Vdirt shed 3.Íb out of the pan l'l comprises a long helical spring and fall to the ground instead of falling upon 23, lthe outer elements of which generally con the lower run |317 of the belt. form to the bottom of the dirt pan. Means is What I claim is: provided forrotating this spring in a direction to carry the dirt out the open end of the pan. ` ‘ I provide a> novel drive means which utilizes the normal rotation of the tail pulley lZ‘b. Mounted on the left end of this pulley, as viewed in Fig. 1. In combination with a conveyor and a ro tatable pulley over which said conveyor passes, a dirt pan adjacent said pulley, said pan being a major circumferentialiportion of a hollow cyl inder positioned with its axis parallel to the axis 3, is a pinion 213 which is keyed to the pulley shaft to rotate therewith. Meshing with this ¿H of said pulley and with an open side of said cylinder substantially tangential to saidpulley on pinion is the large gear 25 which in turn rotates a side of the latter which rotates downwardly to shaft 2B which is connected through a universal ward said pan, a scraper blade oi' spring metal joint device 2l to the shaft 28 which is rigidly resiliently engaging said pulley on said side connected with the spring 23. Suitable bearings thereof, said blade connected with the open and gear case are provided for the pinion 24 and side of said cylindrical pan, a helical spring in gear 215, as shown in the drawings, but these are said pan extending longitudinally thereof, said of usual and known type. The details of the spring substantially conforming to the inner universal joint device 2l need not be described walls of said pan, said pan having an open end, here as they form no part of the present inven~ tion and merely provide an eilicient drive even 60 and means for rotating said Spring in a direc tion to carry dirt out said Open end of said pan, though there is slight misaligninent of shafts 25 said last named means having an operative con and 28. It will be noted that the shaft 28 passes nection with said pulley to provide driving means through the hollow central portion of the sleeve therefor. ' I'ld, these parts being coaxial with the helical spring 23. 'Spring 2‘3 is wrapped' around and 65 2. In combination with a conveyor and a ro tatable pulley over which said conveyor passes, Welded to collar 3o which iS threaded on the in a dirt pan adjacent said pulley, said pan being ner end of shaft 28. It results from this con a major circumferential portion of a hollow cyl structionA that as the belt I3 pursues its normal lnder positioned with its axis parallel to the axis course of travel, the pulley l2b is rotated, and by the gear connections just described causes 70 of said pulley and with an open side of said cylinder substantially tangential to said pulley rotation oi spring 23 in a direction to discharge on a side of the latter which rotates downwardly dirt out the open end of the pan Il. toward said pan, a scraper blade of spring metal The details at the left end of pan Il, as viewed in Fig. 3, will Anow be described. , Secured to a portion of- the conveyor frame marked I2C is a resiliently engaging said pulley on said side thereof, said blade rigidly connected with the 2,412,554 Open side of said cylindrical pan, a helical spring in said pan extending longitudinally thereof, said pan having an open end, interiitting bearing iently engaging said pulley, a stub shaft rigid with said spring and coaxial therewith, and means for rotating said shaft in a direction to cause said spring to carry dirt out said open end the end opposite said open end `for mounting said 5 of said pan, said last named means having a driv members on Said conveyor and on said pan at pan oscillatably about said bearing members, other means nearer the open end of said pan for holding the same with said scraper blade resil ing connection with said pulley. RAYMOND Q. ARMINGTON.