Патент USA US2111591код для вставки
March 22, 1938. _ G. T. HUMPHREY 2,111,591 PUMPING DEVICE Filed Feb. 17, 1936 2 Sheets-Sheet l 31 la: not; G. T. HUMPHREY' 2,111,591 PUMPING DEVICE Filed Feb. 17, less 2 Sheets—5heet 2 Patented Mar. 22, 1938 2,111,591 ' UNITED‘ s 'mrss FATENT iO-FFlyCE 2,111,591 ’ PUMPING DEVICE . ‘George T, Humphrey, Dallas,‘ Tex,‘ assignor, to .‘ Republic Supply Company, Houston,‘ Tex. ‘Application February 17, ‘1936,,Serial No. 64,239 gjsolaims. (01. 74-103) _ ‘:ThlS invention: relates to new and useful im provements in pumping devices. ' ' , ' ‘One object of‘. the invention is to provide an im iprovedgpumping device which is so constructed as 5 itop-rovide a positive. vertical, or: straight line lift .of the pump’ rods. 1 ' ' 1‘ -An important ‘object of the invention is topro ‘ vide an improved device for pumping wells includ ‘ ing a pivoted walking beam which is arranged to ,10 aswing to. raise and lower the pump rods, with .meansforvmovingithe pivot of said‘ beam in. a ‘horizontal plane simultaneously with the swing ring of the beam, whereby the end of said beam ‘travels inavertical line during its swing.- ‘ v15 ‘ Another object of the invention is to providean ‘improved pumping‘ device having a walking beam lfulcrumed in a ‘bearing; which is movable in-1a horizontal plane, andmeans for guiding and'con trolling the movement of the bearing, whereby the end of the beam is moved in an‘ absolutely vertical .2 or straight line.~ V _ A further‘object of the invention is to provide an improved ‘pumping device wherein the walking beam is full-floating which permits the beam‘to 25 be *moved‘laterally, during‘its swing, such lateral movement-of the beam compensating the 1arcuate by reference to‘the accompanying drawingspin which an exampleof the invention is shown, and wherein: ' ' - Figure 1 is a side elevation of a. pumping unit, constructed in accordance with the. invention, .5 Figure 2 is an enlarged viewvof one end of the walking beam and ‘ its. mounting. ‘Figure 3 is a transverse, vertical sectional view, taken on the. line 3-,-3 of Figure‘ 1, > ,‘Figure‘i is a longitudinal,‘sectional-view, taken ~10 through the pivot bearing of the beam, , Figure 5 is a transverse,.vertical, sectional. view, taken on the line 5+5 of Figure 1, Figure 6 is a partial side elevationof a modi?ed 'form of'the invention, ' 15 Figure ‘7* is a“ view, similar to Figure 2 ofstill another form of the invention, and v-‘Figure -8 is a‘ horizontal, cross-sectionahview, “taken on the line 84-8101‘ Figure-"7. , I In the drawings, the numeral l0. designates‘a A I. baseion which a Samson ‘post, or other support I l is mounted. " vThe post is shown as constructed of four angular inclined ~ legs 12' connected and ‘braced‘vby suitable angular members l3. The structural members of the post may be welded, - bolted, or otherwisesuitably secured together to swing of the-beam-to-cause the end of the beam ' ‘form a rigid structure; to travel in‘an, absolutely vertical line. ‘ > ' Still another object of the invention is-to pro 30 vide an improved pumping device including a walking beam which is so mounted that it may be readily removedfrom‘its support by merely dis connecting the pump-rods and the actuatingpit ‘man? ‘therefrom, ‘without disassembling the bear 35 mg in which said beam is fulcrumed; the assem ' bling-‘of‘the unit being as‘readily and easily ac complished. _ ‘ ‘A further object of the invention is to provide an’ improved mounting for a walking beam which ‘ 40 is‘ arranged so- that the beam‘ may be moved com pletely out of the way of the pumping rods of the ‘well by merely disconnecting the rods and Without disconnecting the actuating pitman at- the oppo site end oi‘the beam. 45 ‘ » ' either side thereof. . A longitudinal walking beam ‘ I5 is located‘between the'upper‘end of the legs 12 of‘ the post and this beam. is supported on" the 40 horizontal-angle bars “I. It‘ is noted that the space between‘the legs of the post wherein‘ the beam is located isslightly larger than the width of said beam (Figure 3). Another object of the invention is to provide an The beamis shown .as the usual Iebeamandis .45 improved walking beam mounting wherein the provided with ,a bearing. l6 at its mid-portion. This'bearing is fastened tothe underside‘ of, the beam and a transversepin l'l extends through the bearing, projecting at'each. end. ‘Flanged wheels l8 ‘are fastened to the extended outer ends of‘ the 50 pin and these wheels engage the_,angle bars [4. -..'I'hus,it‘willloe seen that the bars ‘I 4 form a track and the ?anged wheels riding thereon permit the :beam I51 to move horizontally the length of’ said r-bars. ‘1.11; is, notedathahayclearancea I91 ,(Eigure x3) ,55 beam may be moved laterally a limited distance in a horizontal plane, whereby the‘ end of the beam may automatically adjust or align itself vertically 50 with thepump rods. ‘ A construction designed to carry out the inven tion will be hereinafter described, together with other features of the invention. ‘ It is noted, however/that the construction of the post is subject to'variation and the invention is not to be limited to any par ticular type of post. '30 Near the upper end of the post, aipair of parallel angle bars or rails‘ l4 aresecured to the inner sides ‘of thelegs1l2. As is clearly shown in'Figures 2 and"3,. these angle. bars. are located in the same horizontal plane and‘have their horizontal flanges _35 :14’ ‘directed inwardly. The length of thesev bars is'such that their ends extend beyond the post on The invention will be-more readily. understood 55 fromfareadingof the-‘followingspeci?cation and 2 2,111,591 is provided between the outer face of each wheel and the vertical ?ange of each angle bar [4, whereby the entire beam may be moved laterally a limited distance between the bars M. It is pointed out that when the wheels are resting on the track, the top of the beam extends upwardly beyond the upper end of the; legs l2 of the post. It will be obvious that the beam cannot only move in a horizontal path due to the wheels 10 riding on the track, but also the ends of the beam may be swung in a vertical plane on the pin l1, said pin serving as a fulcrum. One end 20 of the beam, which for the sake of clarity will be referred to as to the outer end, is provided 15 with a hanger 2|, on which the upper end of the pump rods 22 are pivoted. The lower ends of the rods extend downwardly into the well, and as the beam is swung, said rods are reciprocated ver tically in the well. It is noted that when the beam is in a horizontal position (full lines Fig ures 1 and 2), the pivot point of the rods in the hanger is in horizontal alignment with the ful crum point of the beam, which is the pin IT. For swinging the beam to reciprocate the rods 25 22, the opposite end 23 of the beam, hereinafter referred to as the inner end, has the upper end of an actuating pitman 24 pivoted thereto. The lower end of the pitman is pivoted to the outer end of a crank arm 25 which is connected with 30 and rotated by a motor 26, or other suitable power source. As the crank rotates, the beam is swung in a vertical plane on the pin ll, whereby the pump rods 22 are reciprocated in the well. Heretofore, it has been the general practice to rigidly secure the pin or bearing, on'which the beam is fulcrumed, to the Samson post I I. With this fulcrum point of the beam’ ?xed, it is ob vious that when the beam is swung, the outer end 26 of the beam which carries the rods 22, travels in an arc. This arcuate travel of the end of the beam causes bending of the pump rods, resulting in breakage and other disadvantages. As above explained, the fulcrum point of the beam is not ?xed but is movable due to the - wheels [8, which are carried by the pivot pin IT, riding on the track formed by the angle bars l4. Thus, as the beam is swung so that the outer end of the beam moves upwardly in an arcuate path, it will be obvious that a simultaneous move ment or shifting of the fulcrum point of said beam will compensate such arcuate movement which will cause the end of the beam to travel in an absolutely vertical path, which imparts a vertical or straight line lift to the pump rods 22. For limiting and guiding the movement or shifting of the pivot pin I1, to shift the fulcrum point of the beam as the same is swung, a pair of arcuate guide cams or shoes 21 are provided. These arcuate guide shoes are positioned, one on 60 each side of the beam, and each shoe is provided with upper and lower ears 28 on its inner side (Figure 2). The lower ear of each shoe is ar ranged to be fastened by bolts 29, to the forward or outer end of one of the angle bars M of the A suitable brace bracket 30 may be weld ed to the extreme lower end of each guide shoe 65 track. and the bracket is adapted to be secured by bolts 3| to the underside of the angle bar M to further fasten the guide in position.' The upper ear 28 of each shoe is arranged to be bolted by bolts 32 to the forward extended end of horizontal angle bars 33 which are secured to, and brace the upper end of the legs l2 of the post. As is clearly shown in Figure 5, the arcuate 75 guide shoes 21 extend vertically, one on each side of the beam IS. A bearing 34 is secured to the underside of the beam and a transverse pin 35 is journaled therein. The outer ends of this pin carry guide rollers 36 which are arranged to ride on the arcuate surface of the guide shoes 21. When the beam I5 is in a horizontal position, as shown in full lines in Figures 1 and 2, the center of the pin 35 is in horizontal alignment with the center of the pin H, which is the fulcrum point of the beam, and also with the center of the 10 pivot point of the upper end of the pump rods 22. In operation, assuming the beam to be in a horizontal position as shown in Figure 2, the rollers 36 are located at substantialy mid-height of the arcuate guide shoes 21. The hanger 2| on the outer end of the beam is in vertical alignment over the well hole and the wheels l8 and pivot pin ll of the beam are at substantially the midportion of the track. As the pitman 24 moves down wardly due to the rotation of the crank 25, the 20 inner end 23 of the beam is pulled downwardly causing the beam to swing on the pin I1. At the same time that the pitman is exerting a down— ward pull on the inner end of the beam, it will also tend to move the beam and the pivot pin I‘! carried thereby inwardly or toward the pitman. This will assure the rollers 26 positively remain ing in engagement with the arcuate guide shoes 21. As soon as the inner end of the pitman starts 30 to move downwardly, the outer end thereof begins its upward swing. If the pivot pin ll were ?xed, then this upward swing of this end of the beam would be arcuate. But this pivot is free to travel on the track, and therefore, as the upward swing . , of the outer end of the beam commences, the guide rollers 36 carried by the beam l5, travel upwardly on the face of the arcuate guide shoes 21. Due to the curve of said shoes, it will be seen that as said rollers move upwardly along the shoes, the beam l5, which carries the guide rollers, is moved outwardly. Movement of the beam will, of course, cause a movement of the wheels l6 along the track to cause the pivot pin H to be shifted horizontally, whereby the ful crum point of the beam is shifted or moved in a horizontal plane. The curvature of the arcuate guide shoes 2'! is such that the fulcrum point of the beam is shifted a proper distance so as to maintain the travel of the outer end of the beam in a vertical path. It is noted that the arcuate shoes engaged by the rollers permit a gradual shifting of the fulcrum. point of the beam, the shifting occurring simultaneously with the swing of the beam. Since the supporting wheels I8 55 travel along the horizontal track formed by the angle bars M, the fulcrum point of the beam, which is the pin I1, moves in an absolutely hori zontal plane and irrespective of the position of the ends of the beam, will never vary from its hori zontal path. 60 On the downswing of the outer end of the beam, the guide rollers 36 will travel downwardly on the arcuate guide shoes 2'! and will shift the fulcrum point exactly as described above, whereby at all times, the outer end of the beam travels in an absolutely vertical line to reciprocate the pump rods in a straight line. Thus, it will be seen that the fulcrum point of the beam is shifted in a horizontal plane simultaneously with the swing 70 of the beam, thereby causing the outer end of the beam to travel in a vertical path, instead of in an arcuate path as is the case when the fulcrum point of the beam is ?xed. It is pointed out that due to the slight clearance I9 between the face 75 2,111,591 of the wheels l8 and the angle bars “I, the beam 3 yoke will cause a movement of the beam on the may undergo a limited lateral movement so that track, whereby the fulcrum point of the beam is it will automatically align itself vertically with shifted in a horizontal plane, thereby causing the outer end of the beam which carries the pump the pump rods 22. . The structure disclosed in the drawings not only provides a straight line lift for the pump rods 22 but also has other advantages. It is obvious that by unhooking the pump rods 22 from the hanger 2| and disconnecting the pitman 24, rods to travel in a vertical line. In all the forms shown, it is noted that the shifting of the fulcrum point of the beam occurs gradually; This gradual shifting also takes place simultaneously with the swing of the beam, and 10 the entire beam l5 may be lifted upwardly from due to the provision of the track, the pivot pin l'l betweenithe legs l2 of the post and thereby re moval of the beam may be readily accomplished. The device may be reassembled with the same case. Further, if it is not desired to remove the 15 beam entirely from the post but merely to move the outer end 20 of the beam out of alignment with the pump rods 22, it is only necessary to dis moves in an absolute horizontal plane. 20 25 40 50 . 55 Said pin remains in such plane regardless of the position of the ends of the beam I5. What I claim and desire to secure by Letters Patent, is: 15 1. A pumping device including, a support, a walking beam, a pivotal mounting carried by the engage the pump rods from the hanger and re- ' beam and mounted’ to move transversely of its move the rollers 36 and pin 35 (Figure 5) after axis in a ?xed horizontal plane in the support, an which the beam may be moved rearwardly on the arcuate guide shoe carried by the support, and a. 20 track so that the outer end of said beam is moved guide roller fastened to the beam and engaging out of vertical alignment with the rods 22. It is the shoe, whereby when the beam is swung on noted that it is not necessary to disconnect the its pivot the roller riding against the arcuate pitman. 'If for any reason, the arcuate guide shoe will move the beam longitudinally to shift shoes 2'! are to be removed, the unfastening of the pivotal mounting on said support. 25 2. A pumping device including, a support hav the bolts 29, 3| and 32 will permit such removal. In Figure 6, a modi?ed form of the invention is ing a horizontal track, a walking beam, a pivotal mounting carried by the beam and including a shown. In this form, instead of the single arcu ate shoe 2'! on each side of the beam, a double roller supported on the track, an arcuate guide arcuate guide shoe 3'! is provided. These double shoe carried by the support, and a guide roller shoes are mounted on the angle bars l4 and 33 fastened to the beam and engaging the shoe, exactly as is the single shoe. The guide rollers whereby when the beam is swung on its pivot the 36 engage between the shoes and thus any pos roller riding against the arcuate shoe will move sibility of the rollers disengaging the guide sur the beam longitudinally to shift the pivotal face of the shoes, is eliminated. The operation of mounting on said track with its axis in a ?xed this form is exactly as the ?rst form. horizontal plane. . In Figures 7 and 8, still another form of the 3. A pumping device including, a support hav invention is shown. In this form, the arcuate ing a spaced pair of horizontal tracks, a walking guide shoes’ 2'! and rollers 36 are omitted. In - beam having a transverse pivotal mounting on its place of these shoes and rollers, a guide yoke 40 is underside at its midportion including an axle 40 provided. This yoke has one end pivotally mount; having rollers at its ends supported on said ed in a bearing 4! fastened to the underside of tracks, said beam having provision at one end for the end 23 of the beam l5. The other end of the the pivotal attachment of a pump rod- and at its yoke is pivoted in bearings 42 secured on the opposite end for the application of operating inner ends of the angle bars M. The pivot points power to rock the beam to lift the pump ‘rod, and of the yoke and of the pin l‘! of the beam are means for moving the beam longitudinally to in horizontal alignment when the beam is in a Wards the pump rod when it is rocked, said means horizontal position, as shown by full lines in including curved shoes mounted on said support Figure '7. ' at the ends of said tracks, and rollers mounted When the pitman 24 is actuated to swing the on ‘opposite sides of the beam and engaging said > beam, it will be obvious that the yoke 40 which shoes, whereby the beam-supporting rollers travel has one end pivotally attached to the beam will on said tracks and the pivotal axis of the beam is also be swung. Since the opposite end of the yoke shifted in a straight line in a ?xed horizontal is pivoted to a ?xed point, the end of the yoke plane and the pump rod moves in a fixed straight which is fastened to the beamtravels in an arc vertical line. 61 Cl (Figure ‘7),. The arcuate travel of the end of the GEORGE T. HU'MPI-IREY.