US2617181A

US2617181A - Cylinder sleeve puller

Info

Publication number: US2617181A
Application number: US19477A
Authority: US
Inventors: Haem Marcel P D
Original assignee: Chicago Pneumatic Tool Co LLC
Current assignee: Chicago Pneumatic Tool Co LLC
Priority date: 1948-04-07
Filing date: 1948-04-07
Publication date: 1952-11-11
Anticipated expiration: 1969-11-11

Description

Nov. 11, 1952 M; P. DHAEM CYLINDER SLEEVE PULLER 6 Sheets-Sheet l Filed April 7, 1948 Nov. 1l, 1952 M. P. D'HAEM CYLINDER SLEEVE FULLER 6 Sheets-Sheet 2 Filed April '7, 1948 IN VEN TOR.

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magma j? pz/wlw* 2 ffaRZI/Zy' Nov. 1l, 1952 M. P. D'HAEM 2,617,181

CYLINDER SLEEVE FULLER Filed April 7, 194s e sheets-sheet s Nov. l1, 1952 M. P. DHAEM l 2,617,181

` CYLINDER SLEEVE FULLER Filed April 7, 1948 '6 Sheets-Sheet 4 IN VEN TOR.

M. P. D'HAEM CYLINDER SLEEVE FULLER Nov. 11, 1952 6 Sheets-#Sheet 5 IN VEN TOR.

Filed April 7,' 1948 Nov. 11, 1952 M. P. D'HAEM 2,617,131

- CYLINDER SLEEVE FULLER Filed April 7, 1948 e sheets-sheet e INVENToR. Midi/5 E L/*ZM Patented Nov. 11, 195,2

CYLINDER SLEEVE PULLER Marcel l. DHaem, Detroit, Mich., assigner to Chicago Pneumatic Tool Company, New York, N. Y., a corporation of New Jersey Application April 7, 1948, Serial No. 19,477

Claims.

This invention relates to a cylinder sleeve puller.

It is an object of the present invention to provide a cylinder sleeve puller which can be readily extended through the cylinder and engage with the inner end thereof and set up for effecting a pulling action upon the cylinder sleeve or liner wherein the tool is adapted and operable by high hydraulic pressure acting within awork cylinder of small dimension and wherein as the sleeve has been withdrawn from the engine block parts are engageable with fixed parts to cause the automatic retraction and disengagement of the engaging segments from the inner end of the sleeve to free the sleeve puller therefrom and permit the removal of the sleeve puller from the engine block so that the sleeve can be taken therefrom.

It is another object of the present invention to provide a sleeve puller which can be easily and quickly converted into a cylinder sleeve pusher or inserter by the removal of certain parts and the securement thereto of a crank shaft hook adapted to anchor the tool upon the engine so that pushing action can be effected by the movement of the piston out of the work cylinder.

Other objects are to provide a sleeve puller adapted to be converted into a pusher which is of simple construction, has minimum parts, inexpensive to manufacture, easy to operate, and efficient in operation.

For other objects and for a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which Fig. 1 is a perspective view of the sleeve puller connected with an engine block to effect the pulling action upon a piston sleeve,

Fig. 2 is a longitudinal sectional View of the sleeve puller and of the engine block, taken on line 2 2 of Fig. 1, with the puller engaging elements abutting with the inner end of the sleeve and the puller set to effect pulling action upon the sleeve upon hydraulic pressure being applied to the same,

Fig. 3 is a side elevational View of the sleeve puller when the pulling action has been completed upon the sleeve and the sleeve withdrawn from the engine block, portions of the puller being broken away to show the positions of the internal parts at this time,

Fig. 4 is an enlarged transverse sectional view taken through the inner end of the sleeve puller and looking upon the engaging elements, the

2 View being taken generally on line 4-4 of Fig. 2 and looking in the direction of the arrows thereof,

Fig. 5 is a perspective view of one of the sleeve engaging elements or segments,

Fig. 6 is a perspective view of a puller segment spring plunger,

Fig. 7 is an enlarged fragmentary and sectional View of the sleeve puller with the parts in position in the cylinder sleeve and the sleeve puller segments in engagement with the end of the sleeve, the view being taken generally on line 'l-l of Fig. 4 and looking in the direction of the arrows thereof,

Figs. 8 and 9 are respectively transverse sectional views taken on lines 8-8 and 9--9 of Fig. 2 and looking respectively in the direction of the arrows thereof,

Fig. 10 is a perspective view of the sleeve puller set up to push or insert a cylinder sleeve into an engine block, the sleeve puller being held by the operator whose foot is being applied to the pump to effect pushing action,

Fig. 11 is a fragmentary and perspective view of the puller parts arranged for use in making the insertion of the sleeve within the engine block and showing its hook member adapted for engagement within the engine block and upon the crank shaft thereof,

Fig. 12 is a longitudinal sectional view of the puller set upon the engine block for inserting a cylinder sleeve, the view being taken on line |2-I2 of Fig. 10,

Fig. 13 is a fragmentary side elevational View of the sleeve puller within the cylinder sleeve and showing the positions thereof as when the sleeve has been extended home within the engine block, portions of the puller being broken away and shown in section to show interior openings of the puller,

Fig. 14 is an enlarged perspective View of the crank shaft hook removed from the other parts of the puller and with portions thereof broken away and shown in section, the hook pad being in place and with the adaptor for engagement of the hook with a small diameter portion of the crank shaft being in place within the hook Pad,

Fig. 15 is a perspective view of the adaptor assembly for including the sleeve engagement segments and illustrating the manner in which the assembly is secured to the cylinder rod plate, this assembly being adapted to replace the crank shaft hook of Fig. 14 when the puller is to be set up for pulling action.

Referring now particularly to Figures 1 to 9 inclusive, and l5, 2i represents generally my sleeve puller set up for the pulling of a cylinder sleeve 22 of an engine block 23 which may be rested upon a bench 24 of convenient height for a Workman. On the iioor is an air operated hydraulic pump adaptedy to extendoil under high pressure through a hose 21 to the sleeve puller 2l. Air is extended to the pump through an air hose 28 at the rear end of the same and the supply of air to effect the actuation of the pump is controlled by a foot lever 29 on which the workman may step to cause the actuation of thepump parts within the pump housin g. O ilr froml the sleeve puller can be returned to the pump through the same hose 21 upon a dump valve or other means within the pump being actuated; The pump 26 is disclosed and claimed in anapplication filed on April 7, 19.48, Serial No. 19,478, in the names of James A. Roberts, Howard R. Fischer and Marcelli?. Dljlaem, said application having issued on March 4, 1952, as PatentNo. 2,588,164. No further mention will b e made as to construction of. the pump, and for details thereof referencemay be.. had. to. this Copending application. The nature of the pump is such that with air pressure acting uponaI largepiston area and upon multiple strokesjoi the piston, high hydraulic pressureis produced withav pump plunger connected with, the piston and acting upon oil within a hydraulic chamber. The oil pressure will run into several' hundredY pounds per square inch with the air pressure being less than one hundred. pounds per Square inch.

The sieeve pullerwZl Whensetupto effect sleeve pulling action. comprises a, work cylinder. having work piston 32 therein. The cylinder 32| has a thread for receiving, a hoseiitting 3d o f the. hose 21. The cylinder 31,' hasfirl enlarged, forward portion 35, f orreceivingfa piurality.- of circumferentially-spaced,pulljrodsf Ascrew itted as indicated `at'31, Fig.' 2,. The. outer ends of the rods having reduced portions 38 on which is secured pull rodl plate 39,1.b'y. securing, nuts 4 1.. Fitted about thgpuirmdfplate;sais a. cylinder. sleeve guide bushingA 42.` which is made secure thereon against axial displacement by aset screw d3 entering a peripheral grooved; inftheplate 39. The puli rods 36;. are slidable respectively through Openings.; 4.5 OffY a. aneed; bushing. 4-1 having arlangedring 43; secured thereto by set screw 49, Figure 2, to which is secured` a sleeve l` adapted to` Surrounding. Working; Dalits 0f. the puller and enga-ee with. thev face 0f,- the engine block 2 3 exteriorly of replaceable cylinder sleeve 22 so as to permit the withdrawal o fthe cylinder sleeve 22 into the sleeve 5t as shownl in Figure?) as it is pulled-from the engine block 23.

The piston 32 is tightly fitted in bushing 4 1 as indicated atv 5.2. The piston 32 has a YCelfltlfl opening through whichis, extended a piston return spring 5,3. This piston return spring extends from the piston. through the bushing 41 and along a return spring guide rod 54- having head 55 fitted. ina depression 5 6Lonthe pull rod plate 39. Theguide rod54; will be extended into the piston as the return spring is compressed at the time the fluid is admitted tothe hydraulic cylinder 3l. The piston 32.has a packing ring 5 1 to prevent leakage of.v the fluidpast the piston,

The pulling rod plate 3d has threadedcentral opening 58. for receiving the` puller segment holder assembly 6i, Figs. Zand 15.` This puller segment holder assembly 6+ comprises a puller segment holder 62 having an enlarged head 63 4 with a large peripheral opening 64 in which puller segments 65 are radially adjustable. These puller segments 65 are normally urged outwardly by puller segment spring plunger 63 containing respectively springs 61 adapted to react against the inner ends and extended into openings in which the. plungers; 6 3 are slidable. Each segment has a., Slot 6.8 havingA an inclined-mm face G9 with which there engages a retracting part 1i carried o n a retracting pin plate 12 slidable on holder 62 and normally urged outwardly from the enlargement 63. by a retracting spring 14 surrounding the, holderv l and against a stop ring 15 tted in av groove onl the holder 6l. The retracting pin plate 129.Y has push rods 16 which are adjustable through openings 11 in pull rod plate 39 for engagementfwith the inner face of bushing 41. When the work cylinder 3| has been extended outwardly of the piston 32 a sufiicient extent for the engagement o f pushrods 16 withthebushing 41 as shown in Fig. 3, the retracting pins 1|- will ride upon bottom surfaces 6,9 of slots 68 whereby to, retract the segments 65, to releasel Vthe same from the inner end of, sleeve 22` so that the sleeve puller can be disengaged therefroml and drop fromthe engineblock23.' A

The holder 62 has 'a 'reduced threaded portion 8i for insertion within thethreaded opening 58; of thepull rod'plate 39, 'Ihe` enlargement 63 of the holder, has, two pins $2; extendedtherefrom across whfh can beappiiedatl Bains. 115,'by means of which the segment holderfassei'nbly 6 1; can be securedupon the Ap ull` rod plate'39 -o'r removed therefrom.

It Should' now be generen? that' when. the sleeve puller has been 's et up as shown upon the engine block with shoulders B11-ofthe segments 6 5l against the` endo i the sleevef22` and with. the operator demessine lever. 2910i the. pump` 2.6, aV pulling action, eieted. een the sleeve 22. and the sleeve will b e pulled outwardly of the engine block 2 3 and thatl the segments Will be automatically retratedat the end o fithe pullingl movement by the engagement of push pins 1 6. with bushing- 41.

Referring now to Figures 10 to 14, thesleeve puller, is shown arranged and, set f or apushing action. upon. a. sleeve. to insert the same in place Within the engine. block; At this time theT segfment holder assembly 61. isremoved f rorn the pull rod plate 39 and in lieu]` thereof` thereZ is connected crank shaft hook f'ghaving. a reduced threaded endV 81. adaptedv to. liti the threaded opening 8j ofA the..y plate 3i). Thisghcok ex-A tended through the engine cylinder 'and fitted about either a largeportio'n? 88,0f. a crank shaft or a small diameter porticm!r 8 9, thereof. A curved pad 9 1 isixed to thejhok by/pins: 9 2 extending into opening 93;. Ifffthehock is to. be extended @rer the. Srrial diminuer4 por-tion. 39. an adaptorrlg'tis` connected to the-inner. faceof therad.' by @190.11195 They sleeve 22 is placed-up on.a ri r 1gil]l orfbuslring 4-1 and is started'.in'.the.cylinder, openingl of the engine block 23 as shownv in Fig. 1 2. The guide 42 is removed from the pull 'rod 3 9 vseas to permit-the free inselftiorlof the parts. within the cylinder opening.

The Operator will.' Siep-011 the foot/.lever 2.9,0f the pump 26 and thepiston.I 32'. will. be. moved outwardly of the cylinder 3 1 tocause the sleeve 2-2 to, bev extended into; the. Cylinder. opening-.- 110 une, the samev as Stews in: Einge- 13- there: after the hydraulicfi-uid, will; be. released;l from the cylinder 3| and permitted to return to the pump, whereby the parts can be released from the crank shaft and withdrawn from the engine block.

It should now be apparent that the sleeve puller upon eiecting a small conversion job thereon is made into a pusher for the extension of the cylinder sleeve or lining into the cylinder opening of the engine block. This change can be eiected with few operations and the puller readily made adaptable for use either as a pusher or puller.

While various changes may be made it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claims.

What is claimed is:

1. An engine cylinder sleeve puller for removing a cylinder sleeve from an engine block comprising a work cylinder, pull rods extending from the work cylinder, a pull rod plate secured to the end of the pull rods, a pull segment holder assembly attached to the pull rod plate and having a plurality of radially movable segments adapted to engage with the end of a sleeve to be pulled, a work piston extending from the work cylinder, and sleeve means extending from the work piston and engageable with the engine about the cylinder sleeve when eiecting the pulling operation and the extension of hydraulic fluid under high pressure to the work cylinder, said pull segment holder assembly having an enlargement with segment openings therein for reception of said movable segments, spring biasing means Within the openings for normally urging the outward movement of the segments, and a retracting device operatively associated with the holder assembly and including retracting pins arranged for engagement with said movable segments, and push rods adapted for abutment with a portion of said puller at the end of the sleeve removal operation so that said retracting pins will be caused to force the movable segments out of engagement with the end of the sleeve.

2. An engine cylinder sleeve puller comprising a work cylinder, pull rods extending from the work cylinder, a pull rod plate secured to the end of the pull rods, a pull segment holder assembly attached to the pull rod plate and adapted to engage with the end of a sleeve of an engine to be pulled, a work piston extending from the work cylinder, and means extending from the work piston and engageable with the engine about the cylinder sleeve when effecting the pulling operation and the extension of hydraulic fluid under high pressure to the work cylinder, said pull segment holder comprising an enlargement, pull segments operable thereon, resilient means urging said pull segments outwardly toward engaging position with relation to the engine sleeve, and a retracting device comprising retracting pins, a retracting pin plate adjustable upon the holder and containing the retracting pins, push pins extending from the retracting plate, said pull rod plate having openings slidably receiving said push pins, said push pins engageable with said means connected to the piston and adapted for engagement with the engine, said segments having inclined surfaces thereon, and said retracting pins operable upon the inclined surfaces of the segments to cause their inward movement upon the engagement of the push pins with the means connected to the piston.

3. In a cylinder sleeve puller a retracting device comprising a segment holder assembly including a pull rod and an enlarged head having a plurality of movable segments being resiliently urged outwardly in a radial direction, said movable segments each having a shoulder to engage an end portion of the sleeve to be pulled, a retracting pin plate surrounding the pull rod and slidably mounted thereon for relative movement -with respect to said enlarged head, push rods extending from said plate on one side, and a plurality of retracting pins extending from the other side, said retracting pins each being engageable with a movable segment, said push rods adapted to engage a portion of said puller at the end of the sleeve pulling operation to cause said retracting pins to force said movable segments from engagement with said sleeve.

4. In a cylinder sleeve puller according to claim 3, wherein a resilient means is compressively arranged between the segment holder assembly and the retracting pin plate.

5. In a cylinder sleeve puller according to claim 4, wherein each retracting pin engages a camming surface formed in each movable segment to provide for movement of the segment in an inwardly radial direction.

MARCEL P. DHAEM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,359,432 Riggs Nov. 16, 1920 1,595,246 Ragsdale Dec. 10, 1926 1,705,789 Steirly Mar. 19, 1929 1,760,989 Lewis June 3, 1930 1,902,571 Mitchell Mar. 21, 1933 2,085,529 Heimbach et al. June 29, 1937 2,238,424 McQuade Apr. 15, 1941 2,252,036 Rummel' Aug. 12, 1941 2,341,677 Wass Feb. 15, 1944 2,421,276 Lotz May 27, 1947 2,421,324 Graham May 27, 1947 2,424,681 Eberhart July 29, 1947 2,430,201 Wyscaver Nov. 4, 1947 2,464,034 Graham Mar. 8, 1949 2,475,040 Mandl July 5, 1949 2,495,649 Wilson Jan. 24, 1950 FOREIGN PATENTS Number Country Date 438,117 Germany Dec. 6', 1926