CA1165544A - Protector removal tool - Google Patents
Protector removal toolInfo
- Publication number
- CA1165544A CA1165544A CA000368113A CA368113A CA1165544A CA 1165544 A CA1165544 A CA 1165544A CA 000368113 A CA000368113 A CA 000368113A CA 368113 A CA368113 A CA 368113A CA 1165544 A CA1165544 A CA 1165544A
- Authority
- CA
- Canada
- Prior art keywords
- shaft
- members
- pipe
- axial centerline
- jaws
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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Abstract
ROYCE G. ROBERTS
PROTECTOR REMOVAL TOOL
ABSTRACT OF THE INVENTION
Apparatus for removing protective members from the threaded ends of pipe joints. A rotating head assembly is attached for longitudinal movement respective to a main frame having a motor mounted therewithin. The head includes a plu-rality of protector gripping jaws which are radially spaced from one another and aligned such that movement of the head assembly towards and away from the main frame causes the jaws to releasably grip the pipe protector. The rotating head assembly includes spaced parallel arms connected to cause the jaws to maintain the same relative position as the jaws are moved apart from one another to accommodate different diameter pipe. The apparatus can also be used to engage and remove pipe couplings as well as other threaded members. A second embodiment of the invention includes a cleaning head assembly mounted to the main frame which cleans the threads of both the box end and pin end of the pipe. A drifter is extended through the interior of the pipe to assure that the inside diameter thereof is greater than a predetermined minimum value.
PROTECTOR REMOVAL TOOL
ABSTRACT OF THE INVENTION
Apparatus for removing protective members from the threaded ends of pipe joints. A rotating head assembly is attached for longitudinal movement respective to a main frame having a motor mounted therewithin. The head includes a plu-rality of protector gripping jaws which are radially spaced from one another and aligned such that movement of the head assembly towards and away from the main frame causes the jaws to releasably grip the pipe protector. The rotating head assembly includes spaced parallel arms connected to cause the jaws to maintain the same relative position as the jaws are moved apart from one another to accommodate different diameter pipe. The apparatus can also be used to engage and remove pipe couplings as well as other threaded members. A second embodiment of the invention includes a cleaning head assembly mounted to the main frame which cleans the threads of both the box end and pin end of the pipe. A drifter is extended through the interior of the pipe to assure that the inside diameter thereof is greater than a predetermined minimum value.
Description
5 ~
BACKGROUND OF T~IE INVENI'ION
When pipe i5 transferred from one geographical location to another, the threads thereof must be protected against damage which might result from handling and from the deleterious effects of the ambient. Oilfield pipe, especially drill pipe and production tubing, may be handled many times during its life, and the removal and replacement of the thread protectors at each end of the pipe joints requires a substan-tial amount of labor.
~0 ~k , When the joints of pipe are transferred longitudinally along the axial centerline thereoE; for example, as the pipe is being manufactured, or as the pipe is being electronically in-spected; the e~ds of the pipe are disposecl such that ready access may be had to the protector device locatecl on either end thereof.
It would therefore be desirable to be able to economically and eE:Eiciently remove or attach the protectors from either end of the pipe~ as the pipe is being conveyed during either o-f these processes.
It would also be desirable to clean the threaded box and pin ends of the pipe during the above process, and there-after measure the uniformity of the interior of the pipe to assure that the inside diameter is of a minimum value.
Such a desirable expedient is the subject o-f this in-vention.
SUMMARY OF THE IN~ENTION
A tool for rotating co-acting threaded members to en-able the mcmbers to be made up and broken out respective to one another. The tool comprises a plurality of circumferentially ; 20 spaced-apart jaw means for releasably engaging and rotating one of the co-acting threaded members.
A first and a second plurality of arm members are arranged for moving the ja~ means radially towards one another and into gripping contact ~ith the threaded member. The arm members are attached to first and second rotatable mount members which impart rotational motion into the jaw members. The -~irst and second rotatable mount members are movable tow~rds and away from one another.
One end of each arm member is journaled to one o$ the jaw means. The other end of the first plurality of arm me~bers A ~
is journaled to the first rotatable mount member, while the other end of the second plurality of jaw members is journaled to the seconcl rotatable mount member. The first and second rota-table members are mounted to the marginal end o-f a motor-driven rotatable shaft~ with the first mount member being arranged to be reciprocated along a marginal, medial portion o-f the shaft.
Means attached to structure associated with the motor moves the first rotatable member towarcls and away from the second rotatable member, thereby causing the arms to move the jaws toward and a~ay from one another.
In a more specific form, the first plurality of arms are arranged such that parallel pairs of arms have the ends thereof connected between the second mount member and the jaws~
thereby causing the jaws to remain orientated in the same direc-tion as the jaws move toward and away from one another. An-other arm interconnects the jaws to the first rotatable member so that movement between the -first and second rotatable members imparts pivotal motion into the parallel arms.
In another embodiment of the invention, the main frame is connected to be moved laterally a~ay from the longitudinally traveling pipe and then the tool is rotated 180 in a vertical plane which lies along the longitudinal axial centerllne of the pipe. The tool is thereby repositioned to engage and remove the remaining protector from the pin end of the pipe.
In still another embodiment of the invention, a clean-ing head is mounted in cooperative relationship respective to the main frame with the cleaning head being axially aligned with the end of one pipe while the jaws of the tool are aligned with the end of an adjacent pipe. The cleaning head engages and cleans the threads of one pipe end simultaneously with the removal of a protector device from the end of an adjacent pipe.
~ ~ ~ s ~
In still a further embodiment of the invention, a gauging tool is positioned to be telescopingly received within a pipe as the pipe travels away from the tool, thereby assuring that the pipe interior is of a predetermined minimum value.
AccoTdingly, a primary object of the prevention inven-tion is the provision of apparatus for rotating co-acting threaded members to enable the members to be made up and broken out respective to one another.
A ~urther object of the present invention is the provi-sion of method and apparatus by which couplings and pipe protec-tors and the like may be removed from or threadedly made up to the end o:E a joint o-f pipe while simultaneously cleaning the threaded pipe ends.
A still further object of this invention is the provi-sion of a machine for releasably engaging and turning a threaded member.
Another and still further object of the present inven-tion is the provision of method and apparatus by which a thread-ed member can be removed from either end of a joint of pipe, while another threaded end of a pipe is being cleaned.
An additional object of this invention is the provi-sion of an apparatus for removing pipe protectors from the threaded ends of a joint of pipe, A further object of this invention is the provision of a machîne having a shaft-mounted, rotating head assembly with radially-spaced jaws being moved towards and away from one another by manipulation of the head assembly so that the jaws can releasably engage and rotate a rotatable member.
These and various other oBjects and advan~ages of the invention will become readily apparent to those skilled in the ~ 5~
art upon reading the following detailed description and claims and by referring to the accompanying drawings.
The above objects are attained in accordance with the present invention by the provision of a combination of elements which are fabricated in a manner substantially as described in the above abstract and summary.
BRIEF DESCRIPTION OF THE DRAWII~GS
Figure 1 diagrammatically sets forth a flow sheet which illustrates one -form o-f the utility of the present inven-tion;
Figure 2 is a part diagrammatical, part schematical, side view of apparatus made in accordance with the present in-vention, with some parts being broken away therefrom in order to better disclose the details thereof;
Figure 3 is a top perspective view which further il-lustrates the details of the apparatus disclosed in Figure 2;
Figure ~ is a perspective, exploded detail of part of the machine illustrated in the foregoing figures;
Figure 5 shows the apparatus of Figure ~ in assembled configuration;
Figures 6 and 7 are partially disassembled, perspec-~; tive views of part of the apparatus located on the opposite side of the apparatus disclosed in Figure 5;
Figure 8 is a front perspective view of part of the apparatus disclosed in Figures 2 and 3;
Figure 9 is a rear perspective vie~ of part of the apparatus disclosed in Figure 3;
Figures 10 and 11 are enlarged~ frag~ented 7 perspec~
tive views illLIstrating the operation o part of the apparatus disclosed in some of the foregoing figures;
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Figure 12 is a front plan view which is simil~er to the illustratlon o-f Figure 8;
Figure 13 is a diagrammatical illustration of another form of the present invention;
Figure 1~ is a detailed, side elevational view of part of the apparatus seen in Figure 13;
Figure 15 is a cross sectional view taken alon~ line 15~15 of Figure 14; and, Figure 16 is a cross~sectional view taken along line 16-16 o-f Figure 1~.
DE!TAILED D~SCRIPTIOl~ OF THE PR~F~RRED BMBODIM~NTS
In the embodiment of Figure 1, the tool 10 of the pre-sent invention is seen to be positioned such that it obstructs a continual flow of longitudinally aligned pipe 12 traveling to or from a pipe rack 11. Pipe protectors are placed on opposed pipe ends 13 and 14.
The tool engages end 13 of the pipe to remove a pro-tector therefrom. The tool is mounted to be moved along track 20~ 72 laterally a~ay from the pipe as seen at 10', thereby enabling the pipe 12' to be conveyed past the tool. The tool is rotated 180 and repositioned a~ 10" to engage the other end 1~ of the pipe at 12'7.
As seen in Figure 2, the tool 10 includes an air motor 15 and is pro~ided with a conventional gear reducer ~hich drives a shaft 16. The shaft may be splined, as for example, an SAE 10 spline shaft, or may be square as noted in the drawings. ~ ro-ta-ting head assembly 17 is provided for releasably gripping one of the two co-acting threaded members of the pipe, such as pipe thread protectors or pipe couplings 7 i~n arder that the co-acting threaded members may be made up and broken out respective to one ~l~55~
another. I'he threaded member illustrated herein is the before mentioned pipe and pipe pro-tector.
As seen in Figures 2 and 3, a ~i.rst mount member, in the form of a large mount plate 19, is spaced from a second mount member is the orm o-f a small mount plate 18. A traveling bearing means 20 is affixed to a non-ro~ating mount member 21.
The mount member i.s reciprocatingly moved in a slidable manner respective to the rotatable sha:Et and with respect to structure 22, which ~orms part of the main frame of the tool.
The motor is suitably mounted within the framework 22 and supported by a base 23. l'he base includes a lug 2~ by which the entire machine can be rotated within a vertical plane and about an axis lying normal to the longitudinal axis of the shaft and pipe, thereby positioning the tool in either of the illustra-ted positions 10 or 10" of Figure 1.
As seen in Figures 2, 3, and 9, spaced hydraulically-actuated cylinder assemblies include a piston 25 having the free end thereof attached to opposed sides of the reciprocating, non-rotatable mount member 21, while the cylinders 26 thereof are attached to a stationary plate 35, with the last named plate being attached to the main frame member 22, Hence, the hydrau-lic cylinders are mounted to move plate members 21 and 35toward and away ~rom one another as best seen illustrated in Figures 2 and 9.
As best seen in Figures 1~ and 11, together with other figures of the drawingsi, one of a plurality of claw and arm assemblies 27 form the forward part of the rotating head assem-bly. The claw assembly includes a plurality of radially spaced jaws 28 to which there is connected an actuating arm 29 and a pair of idler arms 30~ also hereinater referred to a~ a first and a second plurality of ar~s, ~ 5~L~
As seen in Figures 6~ 7, 8, and 12, in conjunction wi~h other f:Lgures oE the drawings, a block 31 is boltecl onto one sicle o:E the plate 19 in spaced relationship to other similar blocks WhiC}l are circumferentially spaced about the outer mar-ginal, peripheral edge portion of the plate. Each block accepts a pin 32, thereby ~orming a journal means for one end o~ each o~
the be~ore mentioned arms 29. It will be noted that arm 2g in the figures o: the drawings comprises a pair of arms positioned on either side of the jaw and bloc~, and the pair of arms are considered to fall within the comprehension of "an arml'. The opposed end of arm 29 is journaled to the ja~ at 33. The paral-lel arms 30 are journaled to the jaw at 33 and 34 with pin 33 being mutually shared by the outer end portion of arms 29 and 30 As seen in Figures 2, 3, and 9, a bearing means 37 is supported from the before mentioned plate member 35 in spaced relationship respective to the traveling bearing housing 20.
Bearing housing 37 includes a rotating inner bearing part 44.
Coupling 38 interconnects the gear reduction output shat to the square drive shaft 16.
Looking now to Figures 4-8, ~hich disclose the details of the large plate member 19 ancl the associated slidable bearing housing 20, there is seen a hub member 39 which is affixed to plate 19 and which slidabl~ receives a medial marginal length of the po~er output sha-ft 16. Bearing 4Q admits low friction turn-ing between the sha-ft and the outer housing 36 of the bearing means. In Figures 4 and 5, apertures 41 are placed 120 apart for recel~ing block 31. Figure 6 dlscloses the opposed side of the large plate member and the location of the blocks 31.
As seen in Figures 3, 7, and 8, the s~ll p:late membe~
18 is similarly provided with rad~all~ s~aced bloc~s 42 so that the parallel arm assemblies can be journalecl thereto.
In operation, the apparatus 10 for removing protective members from the threaded ends 13 and 14 of the pipe joints 12 comprises a main frame member 22 to which a motor lS is affixed to enable the shaft 16 to be rotated. The sha-ft has a splined connection at 39. The term "splined shaft" is intended to de-note "a shaft having an irregular outer surface area", as for example, the illustrated square shaft.
The square shaft imparts rotation into a :first mount member 19, which is illustrated as being in circular form, and which can assume other geometrical con-figurations, so long as the radially spaced-apart actuating arms 29 are attached to and move therewith. The first mount member is slidably supported on the shaft. A second mount member 18, which is illustrated as being of a circular configuration, ~ut which can take on several different forms so long as the central axis thereof is attached to the terminal end oE the power output shaft and moves there-with.
The arms 30 are arranged in spaced parallel pairs to provide four arms for each jaw, The arms have one of the opposed ends thereof journaled to the second mount member and the other end journaled to the jaw. The actuating arm members 29 are pivotally connected to the innermost pivot pin of the jaw; and therefore, a common pin ties one end of the arms 29 and one end of one pair of the arms 30 to the jaw.
As the second member 18 i5 moved towards and away from the first mem~er lg, the jaws move towards and away ~rom one an-other, and the parallel relatIonship of the palr of arms 30 maintain the jaw orientated in the same general direction as the jaws move toward and away from one another.
~ g ~ 55~
In the illustrated embodiment of Figure 1, the appara-tus is moved on a laterally disposed track, with the jaws con-celltrically arranged respective to the axial centerline of the ~ipe 12. The hydraulic cylinders 26 ~orce the pistons 25 to e~-tend therefrom, thereby moving the ~irst ~ount member 19 towards the second mount member 18 to close the jaws about the protector.
The air motor 15 is ~upplied with a suitable source of compressed air for causing the power shaft to rotate the entire head assem-bly, which rotates the pipe protector therewith, there~y remov-ing the protector from the pipe end. The piston is next retracted within the cylinder~ thereby movi.ng plate members 18 and 19 apart, which cause the jaws to move radially away from one another, whereupon the protector is released and may be dropped onto a moving conveyor (not shown) located below the pipe.
The apparatus 10 moves laterally a~ay ~rom the pipe 12, 12', so that the pipe can continue at 12' on to station 12"
as the apparatus is pivoted at 24 from the position seen at lQ
into a second position la". The apparatus lQ' is repositioned at 10" into axially aligned relationship respective to the pipe so that the rotating head assembly can engage and remove the re-maining protector from the other end of the pipeO
In the embodiment of the invention illustrated in Figure 13, pipe 12 is stored on pipe rack 11 and conveyed at 12' toward a tool llO made in accordance with the present invention.
The tool 110 includes apparatus la made in accordance with the first embodiment of the invention, and additionally includes a thread cleaning apparatus 80 mounted on the same framework therewith. The tool 10 removes a pipe protector from pipe end 13 while the tool 80 is cleaning the threads at pi~e end 14' and ~ice versa. The apparatus llO can be retracted away from the - 10 ' ~ 5~
line of travel oE the pipe as the pipe moves from 12' to 12".
T}le apparatus 110 is rotatable 180 in a vcrtical plane in order to reverse the rela-tionship of the tools 10 and 80.
After the protectors have been removed from each end of the pipe, and the threads have been cleaned, the pipe con-tinues along its longitudinal axial centerline causing a drit indicator 81 to telescopingly receive the pipe thereabout as indicated by numeral 12"'. Numeral 82 indicates a cantilever arm which supports the drift apparatus 81 in a manner to enable the apparatus to travel along the entire length of the pipe.
Apparatus 81 is a commercially available dri-fting device which determines the minimum inside diameter of the pipe.
After the pipe has been drifted, it is returned to position 12" and then moved laterally onto pipe rack 111.
In F'igure ~, the tool 10 is schematically illustrated mounted on main framework 22 as in the before described manner of Figures 1-12. Apparatus 24 rotates the entire framework to describe a vertical plane which lies along the longitudinal axial centerline of pipe 12', 12'l, 12"'~ Hence, the tools lQ
and 80 change their relative position in order that each tool can sequentially work on each end of the pipe in the above de-scribed manner.
As seen in Figure 14, the cleaning tool 8Q includes a hydraulically actuated motor 83 which concurrently rotates plate members 84 and 85 about the centers thereo. ~otor s~p;
port 86 rotatably mounts motor 83 to the mai:n frame so that when shaft 87 is rotated 180 by motor 88 ? plate members 84 and 85 change their relative positions. Stated differently, shaft 87 is rotatably received within housing 86 and rotates motor 83 within a plane which coincides ~ith the axial centerline of pipe ~ 5~
joints 12' and 12". The centers o-f plates 8~ and 85 are axially aligned and coincide with the center of the shaft of tool 10 when the cleaning tool 80 is in either of the above described alternant positions.
Radially spaced brushes 89 are adjustably afixed to and extend from the outer face of plate member 85, while radially spaced brushes 90 are adjustable affixed to the oute~ face of plate member 8~. The outer faces of the plates are diametrically opposed to one another.
As seen in Figure 1~, the motor 83 has opposed shaft ends, one of which is seen at 91 in ~igure 15. Radially arranged slots 92 adjustably receive the brush members 90. A fastener means 93 is received through the slot by which the brushes 90 are fastened to the plate member 8~ along any desired circumference measured radially from the shaft 91, The cleaning surface 97 of the brushes 90 is arranged to frictionally engage the lnside threaded wall surface 97' of the end of a pipe joint; that is, the box end of the pipe joint.
In Figure 16, the radially spaced brushes 89 are ad-justably attached to plate member g5 by means of fastener 95 re-ceived through radially arranged slot 9~. The brushes may be moved to~ard and away from one another to position the cleaning surface 96 thereof along a circumference 96' so that the clean-ing surface of the brushes can frictionally engage the outer threaded surface of *he pipe joint; that is, the pin end of the pipe joint.
In operation, joints of pipe are racked at 11 and transferred in series relationship by a conventional con~e~or system towards the apparatus 110. The toQl 10 engages the pipe protector at pipe end 13, unscrews the protector, and drops it onto an underlying moving conveyor ~not shown). The pipe ends are moved apart, t'he tool 110 reversed 180, the pipe ends are moved towards one another, ~hereupon the tool 10 engages the protector at pin end 14', and the protector is dropped onto the conveyor.
Simultaneously with the removal o-~ the protector :~rom pipe end 14', the cleaning tool sa engages and cleans thc thTeads of pipe end 13. The tool 110 is again rotated 180 and the remaining end 14' is cleaned, After the protectors are removed and the threads of the pipe ends have been properly cleaned, the apparatus 110 moves laterally away from the longitudinal axial centerline of the pipe supported upon the conveyor, and the pipe 12" is moved by the conveyor to telescopingly recei~e the drifter 81 to assure that the inside diameter is of a minimum value. The pipe is moved Erom 12'r' back to position 12" and then moved laterally onto the pipe rack 111. Meanl~hile, pipe 12 and 12' are posi-tioned at 12' and 12".
F.ach time the main :Erame 22 is rotated 180 by appa-ratus 24, sha,ft 87 is sîmultaneously rotated 18Q to change the operative relationship oE the brushes 89 and 90 respective to one another. Thus, the cleaning device o~ the apparatus 110 is reposi~ioned to properly receive the box or pin end of the next adjacent joint oE pipe.
It is considered ~ithin the comprehension of the pre-sent invention to utilize the action of apparatus 24 rotating the main frame 180Q in order to impart 18Q of rotation into shaft member 87. This can be achieved by~ a s~ationary sprocket associated ~ith rigid structure adjacent to motor 24, or alter-natively, linkage and bell cranks can ~e connected t~ achieve ~ 13 -lSO of rotational motion of shaft 87 each time the main frame is rotatecl by apl)aratus 24.
I\loIeover it i.s corlsiclerecl withill tlle comprehension of this invention to ~ ize a drive -train from the motor of tool 10 in order to rotate shaft end.s 91 and 98 of the cleaning tool ~0 .
Ihe apparatus of the present invention enables a sin-gle operator to remove threacled mernbers frorn the ends of pipe clean the threaded ends of the pipe drift the interior of the pipe and therea:fter move the pipe to a storage rack.
. .
BACKGROUND OF T~IE INVENI'ION
When pipe i5 transferred from one geographical location to another, the threads thereof must be protected against damage which might result from handling and from the deleterious effects of the ambient. Oilfield pipe, especially drill pipe and production tubing, may be handled many times during its life, and the removal and replacement of the thread protectors at each end of the pipe joints requires a substan-tial amount of labor.
~0 ~k , When the joints of pipe are transferred longitudinally along the axial centerline thereoE; for example, as the pipe is being manufactured, or as the pipe is being electronically in-spected; the e~ds of the pipe are disposecl such that ready access may be had to the protector device locatecl on either end thereof.
It would therefore be desirable to be able to economically and eE:Eiciently remove or attach the protectors from either end of the pipe~ as the pipe is being conveyed during either o-f these processes.
It would also be desirable to clean the threaded box and pin ends of the pipe during the above process, and there-after measure the uniformity of the interior of the pipe to assure that the inside diameter is of a minimum value.
Such a desirable expedient is the subject o-f this in-vention.
SUMMARY OF THE IN~ENTION
A tool for rotating co-acting threaded members to en-able the mcmbers to be made up and broken out respective to one another. The tool comprises a plurality of circumferentially ; 20 spaced-apart jaw means for releasably engaging and rotating one of the co-acting threaded members.
A first and a second plurality of arm members are arranged for moving the ja~ means radially towards one another and into gripping contact ~ith the threaded member. The arm members are attached to first and second rotatable mount members which impart rotational motion into the jaw members. The -~irst and second rotatable mount members are movable tow~rds and away from one another.
One end of each arm member is journaled to one o$ the jaw means. The other end of the first plurality of arm me~bers A ~
is journaled to the first rotatable mount member, while the other end of the second plurality of jaw members is journaled to the seconcl rotatable mount member. The first and second rota-table members are mounted to the marginal end o-f a motor-driven rotatable shaft~ with the first mount member being arranged to be reciprocated along a marginal, medial portion o-f the shaft.
Means attached to structure associated with the motor moves the first rotatable member towarcls and away from the second rotatable member, thereby causing the arms to move the jaws toward and a~ay from one another.
In a more specific form, the first plurality of arms are arranged such that parallel pairs of arms have the ends thereof connected between the second mount member and the jaws~
thereby causing the jaws to remain orientated in the same direc-tion as the jaws move toward and away from one another. An-other arm interconnects the jaws to the first rotatable member so that movement between the -first and second rotatable members imparts pivotal motion into the parallel arms.
In another embodiment of the invention, the main frame is connected to be moved laterally a~ay from the longitudinally traveling pipe and then the tool is rotated 180 in a vertical plane which lies along the longitudinal axial centerllne of the pipe. The tool is thereby repositioned to engage and remove the remaining protector from the pin end of the pipe.
In still another embodiment of the invention, a clean-ing head is mounted in cooperative relationship respective to the main frame with the cleaning head being axially aligned with the end of one pipe while the jaws of the tool are aligned with the end of an adjacent pipe. The cleaning head engages and cleans the threads of one pipe end simultaneously with the removal of a protector device from the end of an adjacent pipe.
~ ~ ~ s ~
In still a further embodiment of the invention, a gauging tool is positioned to be telescopingly received within a pipe as the pipe travels away from the tool, thereby assuring that the pipe interior is of a predetermined minimum value.
AccoTdingly, a primary object of the prevention inven-tion is the provision of apparatus for rotating co-acting threaded members to enable the members to be made up and broken out respective to one another.
A ~urther object of the present invention is the provi-sion of method and apparatus by which couplings and pipe protec-tors and the like may be removed from or threadedly made up to the end o:E a joint o-f pipe while simultaneously cleaning the threaded pipe ends.
A still further object of this invention is the provi-sion of a machine for releasably engaging and turning a threaded member.
Another and still further object of the present inven-tion is the provision of method and apparatus by which a thread-ed member can be removed from either end of a joint of pipe, while another threaded end of a pipe is being cleaned.
An additional object of this invention is the provi-sion of an apparatus for removing pipe protectors from the threaded ends of a joint of pipe, A further object of this invention is the provision of a machîne having a shaft-mounted, rotating head assembly with radially-spaced jaws being moved towards and away from one another by manipulation of the head assembly so that the jaws can releasably engage and rotate a rotatable member.
These and various other oBjects and advan~ages of the invention will become readily apparent to those skilled in the ~ 5~
art upon reading the following detailed description and claims and by referring to the accompanying drawings.
The above objects are attained in accordance with the present invention by the provision of a combination of elements which are fabricated in a manner substantially as described in the above abstract and summary.
BRIEF DESCRIPTION OF THE DRAWII~GS
Figure 1 diagrammatically sets forth a flow sheet which illustrates one -form o-f the utility of the present inven-tion;
Figure 2 is a part diagrammatical, part schematical, side view of apparatus made in accordance with the present in-vention, with some parts being broken away therefrom in order to better disclose the details thereof;
Figure 3 is a top perspective view which further il-lustrates the details of the apparatus disclosed in Figure 2;
Figure ~ is a perspective, exploded detail of part of the machine illustrated in the foregoing figures;
Figure 5 shows the apparatus of Figure ~ in assembled configuration;
Figures 6 and 7 are partially disassembled, perspec-~; tive views of part of the apparatus located on the opposite side of the apparatus disclosed in Figure 5;
Figure 8 is a front perspective view of part of the apparatus disclosed in Figures 2 and 3;
Figure 9 is a rear perspective vie~ of part of the apparatus disclosed in Figure 3;
Figures 10 and 11 are enlarged~ frag~ented 7 perspec~
tive views illLIstrating the operation o part of the apparatus disclosed in some of the foregoing figures;
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Figure 12 is a front plan view which is simil~er to the illustratlon o-f Figure 8;
Figure 13 is a diagrammatical illustration of another form of the present invention;
Figure 1~ is a detailed, side elevational view of part of the apparatus seen in Figure 13;
Figure 15 is a cross sectional view taken alon~ line 15~15 of Figure 14; and, Figure 16 is a cross~sectional view taken along line 16-16 o-f Figure 1~.
DE!TAILED D~SCRIPTIOl~ OF THE PR~F~RRED BMBODIM~NTS
In the embodiment of Figure 1, the tool 10 of the pre-sent invention is seen to be positioned such that it obstructs a continual flow of longitudinally aligned pipe 12 traveling to or from a pipe rack 11. Pipe protectors are placed on opposed pipe ends 13 and 14.
The tool engages end 13 of the pipe to remove a pro-tector therefrom. The tool is mounted to be moved along track 20~ 72 laterally a~ay from the pipe as seen at 10', thereby enabling the pipe 12' to be conveyed past the tool. The tool is rotated 180 and repositioned a~ 10" to engage the other end 1~ of the pipe at 12'7.
As seen in Figure 2, the tool 10 includes an air motor 15 and is pro~ided with a conventional gear reducer ~hich drives a shaft 16. The shaft may be splined, as for example, an SAE 10 spline shaft, or may be square as noted in the drawings. ~ ro-ta-ting head assembly 17 is provided for releasably gripping one of the two co-acting threaded members of the pipe, such as pipe thread protectors or pipe couplings 7 i~n arder that the co-acting threaded members may be made up and broken out respective to one ~l~55~
another. I'he threaded member illustrated herein is the before mentioned pipe and pipe pro-tector.
As seen in Figures 2 and 3, a ~i.rst mount member, in the form of a large mount plate 19, is spaced from a second mount member is the orm o-f a small mount plate 18. A traveling bearing means 20 is affixed to a non-ro~ating mount member 21.
The mount member i.s reciprocatingly moved in a slidable manner respective to the rotatable sha:Et and with respect to structure 22, which ~orms part of the main frame of the tool.
The motor is suitably mounted within the framework 22 and supported by a base 23. l'he base includes a lug 2~ by which the entire machine can be rotated within a vertical plane and about an axis lying normal to the longitudinal axis of the shaft and pipe, thereby positioning the tool in either of the illustra-ted positions 10 or 10" of Figure 1.
As seen in Figures 2, 3, and 9, spaced hydraulically-actuated cylinder assemblies include a piston 25 having the free end thereof attached to opposed sides of the reciprocating, non-rotatable mount member 21, while the cylinders 26 thereof are attached to a stationary plate 35, with the last named plate being attached to the main frame member 22, Hence, the hydrau-lic cylinders are mounted to move plate members 21 and 35toward and away ~rom one another as best seen illustrated in Figures 2 and 9.
As best seen in Figures 1~ and 11, together with other figures of the drawingsi, one of a plurality of claw and arm assemblies 27 form the forward part of the rotating head assem-bly. The claw assembly includes a plurality of radially spaced jaws 28 to which there is connected an actuating arm 29 and a pair of idler arms 30~ also hereinater referred to a~ a first and a second plurality of ar~s, ~ 5~L~
As seen in Figures 6~ 7, 8, and 12, in conjunction wi~h other f:Lgures oE the drawings, a block 31 is boltecl onto one sicle o:E the plate 19 in spaced relationship to other similar blocks WhiC}l are circumferentially spaced about the outer mar-ginal, peripheral edge portion of the plate. Each block accepts a pin 32, thereby ~orming a journal means for one end o~ each o~
the be~ore mentioned arms 29. It will be noted that arm 2g in the figures o: the drawings comprises a pair of arms positioned on either side of the jaw and bloc~, and the pair of arms are considered to fall within the comprehension of "an arml'. The opposed end of arm 29 is journaled to the ja~ at 33. The paral-lel arms 30 are journaled to the jaw at 33 and 34 with pin 33 being mutually shared by the outer end portion of arms 29 and 30 As seen in Figures 2, 3, and 9, a bearing means 37 is supported from the before mentioned plate member 35 in spaced relationship respective to the traveling bearing housing 20.
Bearing housing 37 includes a rotating inner bearing part 44.
Coupling 38 interconnects the gear reduction output shat to the square drive shaft 16.
Looking now to Figures 4-8, ~hich disclose the details of the large plate member 19 ancl the associated slidable bearing housing 20, there is seen a hub member 39 which is affixed to plate 19 and which slidabl~ receives a medial marginal length of the po~er output sha-ft 16. Bearing 4Q admits low friction turn-ing between the sha-ft and the outer housing 36 of the bearing means. In Figures 4 and 5, apertures 41 are placed 120 apart for recel~ing block 31. Figure 6 dlscloses the opposed side of the large plate member and the location of the blocks 31.
As seen in Figures 3, 7, and 8, the s~ll p:late membe~
18 is similarly provided with rad~all~ s~aced bloc~s 42 so that the parallel arm assemblies can be journalecl thereto.
In operation, the apparatus 10 for removing protective members from the threaded ends 13 and 14 of the pipe joints 12 comprises a main frame member 22 to which a motor lS is affixed to enable the shaft 16 to be rotated. The sha-ft has a splined connection at 39. The term "splined shaft" is intended to de-note "a shaft having an irregular outer surface area", as for example, the illustrated square shaft.
The square shaft imparts rotation into a :first mount member 19, which is illustrated as being in circular form, and which can assume other geometrical con-figurations, so long as the radially spaced-apart actuating arms 29 are attached to and move therewith. The first mount member is slidably supported on the shaft. A second mount member 18, which is illustrated as being of a circular configuration, ~ut which can take on several different forms so long as the central axis thereof is attached to the terminal end oE the power output shaft and moves there-with.
The arms 30 are arranged in spaced parallel pairs to provide four arms for each jaw, The arms have one of the opposed ends thereof journaled to the second mount member and the other end journaled to the jaw. The actuating arm members 29 are pivotally connected to the innermost pivot pin of the jaw; and therefore, a common pin ties one end of the arms 29 and one end of one pair of the arms 30 to the jaw.
As the second member 18 i5 moved towards and away from the first mem~er lg, the jaws move towards and away ~rom one an-other, and the parallel relatIonship of the palr of arms 30 maintain the jaw orientated in the same general direction as the jaws move toward and away from one another.
~ g ~ 55~
In the illustrated embodiment of Figure 1, the appara-tus is moved on a laterally disposed track, with the jaws con-celltrically arranged respective to the axial centerline of the ~ipe 12. The hydraulic cylinders 26 ~orce the pistons 25 to e~-tend therefrom, thereby moving the ~irst ~ount member 19 towards the second mount member 18 to close the jaws about the protector.
The air motor 15 is ~upplied with a suitable source of compressed air for causing the power shaft to rotate the entire head assem-bly, which rotates the pipe protector therewith, there~y remov-ing the protector from the pipe end. The piston is next retracted within the cylinder~ thereby movi.ng plate members 18 and 19 apart, which cause the jaws to move radially away from one another, whereupon the protector is released and may be dropped onto a moving conveyor (not shown) located below the pipe.
The apparatus 10 moves laterally a~ay ~rom the pipe 12, 12', so that the pipe can continue at 12' on to station 12"
as the apparatus is pivoted at 24 from the position seen at lQ
into a second position la". The apparatus lQ' is repositioned at 10" into axially aligned relationship respective to the pipe so that the rotating head assembly can engage and remove the re-maining protector from the other end of the pipeO
In the embodiment of the invention illustrated in Figure 13, pipe 12 is stored on pipe rack 11 and conveyed at 12' toward a tool llO made in accordance with the present invention.
The tool 110 includes apparatus la made in accordance with the first embodiment of the invention, and additionally includes a thread cleaning apparatus 80 mounted on the same framework therewith. The tool 10 removes a pipe protector from pipe end 13 while the tool 80 is cleaning the threads at pi~e end 14' and ~ice versa. The apparatus llO can be retracted away from the - 10 ' ~ 5~
line of travel oE the pipe as the pipe moves from 12' to 12".
T}le apparatus 110 is rotatable 180 in a vcrtical plane in order to reverse the rela-tionship of the tools 10 and 80.
After the protectors have been removed from each end of the pipe, and the threads have been cleaned, the pipe con-tinues along its longitudinal axial centerline causing a drit indicator 81 to telescopingly receive the pipe thereabout as indicated by numeral 12"'. Numeral 82 indicates a cantilever arm which supports the drift apparatus 81 in a manner to enable the apparatus to travel along the entire length of the pipe.
Apparatus 81 is a commercially available dri-fting device which determines the minimum inside diameter of the pipe.
After the pipe has been drifted, it is returned to position 12" and then moved laterally onto pipe rack 111.
In F'igure ~, the tool 10 is schematically illustrated mounted on main framework 22 as in the before described manner of Figures 1-12. Apparatus 24 rotates the entire framework to describe a vertical plane which lies along the longitudinal axial centerline of pipe 12', 12'l, 12"'~ Hence, the tools lQ
and 80 change their relative position in order that each tool can sequentially work on each end of the pipe in the above de-scribed manner.
As seen in Figure 14, the cleaning tool 8Q includes a hydraulically actuated motor 83 which concurrently rotates plate members 84 and 85 about the centers thereo. ~otor s~p;
port 86 rotatably mounts motor 83 to the mai:n frame so that when shaft 87 is rotated 180 by motor 88 ? plate members 84 and 85 change their relative positions. Stated differently, shaft 87 is rotatably received within housing 86 and rotates motor 83 within a plane which coincides ~ith the axial centerline of pipe ~ 5~
joints 12' and 12". The centers o-f plates 8~ and 85 are axially aligned and coincide with the center of the shaft of tool 10 when the cleaning tool 80 is in either of the above described alternant positions.
Radially spaced brushes 89 are adjustably afixed to and extend from the outer face of plate member 85, while radially spaced brushes 90 are adjustable affixed to the oute~ face of plate member 8~. The outer faces of the plates are diametrically opposed to one another.
As seen in Figure 1~, the motor 83 has opposed shaft ends, one of which is seen at 91 in ~igure 15. Radially arranged slots 92 adjustably receive the brush members 90. A fastener means 93 is received through the slot by which the brushes 90 are fastened to the plate member 8~ along any desired circumference measured radially from the shaft 91, The cleaning surface 97 of the brushes 90 is arranged to frictionally engage the lnside threaded wall surface 97' of the end of a pipe joint; that is, the box end of the pipe joint.
In Figure 16, the radially spaced brushes 89 are ad-justably attached to plate member g5 by means of fastener 95 re-ceived through radially arranged slot 9~. The brushes may be moved to~ard and away from one another to position the cleaning surface 96 thereof along a circumference 96' so that the clean-ing surface of the brushes can frictionally engage the outer threaded surface of *he pipe joint; that is, the pin end of the pipe joint.
In operation, joints of pipe are racked at 11 and transferred in series relationship by a conventional con~e~or system towards the apparatus 110. The toQl 10 engages the pipe protector at pipe end 13, unscrews the protector, and drops it onto an underlying moving conveyor ~not shown). The pipe ends are moved apart, t'he tool 110 reversed 180, the pipe ends are moved towards one another, ~hereupon the tool 10 engages the protector at pin end 14', and the protector is dropped onto the conveyor.
Simultaneously with the removal o-~ the protector :~rom pipe end 14', the cleaning tool sa engages and cleans thc thTeads of pipe end 13. The tool 110 is again rotated 180 and the remaining end 14' is cleaned, After the protectors are removed and the threads of the pipe ends have been properly cleaned, the apparatus 110 moves laterally away from the longitudinal axial centerline of the pipe supported upon the conveyor, and the pipe 12" is moved by the conveyor to telescopingly recei~e the drifter 81 to assure that the inside diameter is of a minimum value. The pipe is moved Erom 12'r' back to position 12" and then moved laterally onto the pipe rack 111. Meanl~hile, pipe 12 and 12' are posi-tioned at 12' and 12".
F.ach time the main :Erame 22 is rotated 180 by appa-ratus 24, sha,ft 87 is sîmultaneously rotated 18Q to change the operative relationship oE the brushes 89 and 90 respective to one another. Thus, the cleaning device o~ the apparatus 110 is reposi~ioned to properly receive the box or pin end of the next adjacent joint oE pipe.
It is considered ~ithin the comprehension of the pre-sent invention to utilize the action of apparatus 24 rotating the main frame 180Q in order to impart 18Q of rotation into shaft member 87. This can be achieved by~ a s~ationary sprocket associated ~ith rigid structure adjacent to motor 24, or alter-natively, linkage and bell cranks can ~e connected t~ achieve ~ 13 -lSO of rotational motion of shaft 87 each time the main frame is rotatecl by apl)aratus 24.
I\loIeover it i.s corlsiclerecl withill tlle comprehension of this invention to ~ ize a drive -train from the motor of tool 10 in order to rotate shaft end.s 91 and 98 of the cleaning tool ~0 .
Ihe apparatus of the present invention enables a sin-gle operator to remove threacled mernbers frorn the ends of pipe clean the threaded ends of the pipe drift the interior of the pipe and therea:fter move the pipe to a storage rack.
. .
Claims (15)
1. Apparatus for removing protective members from the threaded ends of pipe joints comprising a main frame, a recipro-cating bearing means, a rotating head assembly, an elongated shaft, means for imparting rotational motion into said shaft;
said head assembly includes a first mount member and a second mount member concentrically arranged in spaced relation to one another and axially arranged respective to said shaft; a plurality of gripping members, a plurality of long arms having one end affixed in journaled relationship to said first mount member, a plurality of short arms having one end affixed in journaled relationship to said second mount member; means by which each of said gripping members is journaled to the other end of one of said long arms and to the other end of one of said short arms;
means rotatably supporting said first mount member from said reciprocating bearing means, means for reciprocating said bearing means respective to said main frame; said shaft having an end affixed to said second mount member;
whereby said first mount member can be moved respec-tive to said main frame member, thereby changing the relative distance between the gripping members, while said gripping mem-bers are rotatably about the axial centerline of the shaft, so that the gripping members can jointly engage and rotate a threaded member respective to a complementary threaded member, and thereafter the gripping members can release the first recited threaded member.
said head assembly includes a first mount member and a second mount member concentrically arranged in spaced relation to one another and axially arranged respective to said shaft; a plurality of gripping members, a plurality of long arms having one end affixed in journaled relationship to said first mount member, a plurality of short arms having one end affixed in journaled relationship to said second mount member; means by which each of said gripping members is journaled to the other end of one of said long arms and to the other end of one of said short arms;
means rotatably supporting said first mount member from said reciprocating bearing means, means for reciprocating said bearing means respective to said main frame; said shaft having an end affixed to said second mount member;
whereby said first mount member can be moved respec-tive to said main frame member, thereby changing the relative distance between the gripping members, while said gripping mem-bers are rotatably about the axial centerline of the shaft, so that the gripping members can jointly engage and rotate a threaded member respective to a complementary threaded member, and thereafter the gripping members can release the first recited threaded member.
2. The apparatus of Claim 1 wherein said main frame includes journal means by which said shaft is rotatable support-ed therefrom, said means for reciprocating said reciprocating bearing means includes a plurality of actuator means radially spaced about said shaft and connected for reciprocal movement of said first mount member parallel to said shaft.
3. The apparatus of Claim 2 wherein said short arms include a plurality of pairs of parallel arms radially spaced about the axial centerline of said shaft, each of said pairs of parallel arms are arranged such that the ends thereof which are journaled to said second mount member each lie along a common radial line drawn from the axial centerline of said shaft;
the other end of said pair of parallel arms are journaled to one of said gripping members such that the ends thereof lie along a common radial line drawn from the axial centerline of said shaft.
the other end of said pair of parallel arms are journaled to one of said gripping members such that the ends thereof lie along a common radial line drawn from the axial centerline of said shaft.
4. The apparatus of Claim 3 wherein said gripping members are provided with jaws which face radially inwardly whereby movement of said first mount member towards said second mount member causes the jaws to travel radially inwardly towards one another so that the jaws jointly grip any object placed therebetween.
5. The apparatus of Claim 4 wherein said shaft is splined along a marginal length thereof, said first mount member has a complementary splined connection formed thereon which slid-ably engages the spline of the shaft, thereby enabling the shaft to impart rotational energy into both said first and second mount members.
6. The apparatus of Claim 5 and further including means by which said main frame can be rotated 180° about an axis which lies normal to the axial centerline of the shaft;
and means by which said main frame member can be moved laterally respective to the axial centerline of the shaft;
whereby the jaws can engage and remove a threaded mem-ber attached to one end of a pipe joint, the apparatus can move laterally away from the pipe joint and rotate 180° respective thereto while the joint moves along its axial centerline, the apparatus can move laterally into axial alignment with the pipe and the jaws can then engage and remove another threaded member located on the other end of the pipe joint.
and means by which said main frame member can be moved laterally respective to the axial centerline of the shaft;
whereby the jaws can engage and remove a threaded mem-ber attached to one end of a pipe joint, the apparatus can move laterally away from the pipe joint and rotate 180° respective thereto while the joint moves along its axial centerline, the apparatus can move laterally into axial alignment with the pipe and the jaws can then engage and remove another threaded member located on the other end of the pipe joint.
7. The apparatus of Claim 1 wherein said short arms include a plurality of pairs of parallel arms radially spaced about the axial centerline of said shaft, each of said pairs of parallel arms are arranged such that the ends thereof which are journaled to said second mount member each lie along a common radial line drawn from the axial centerline of said shaft;
the other end of said pair of parallel arms are jour-naled to one of said gripping members such that the ends there-of lie along a common radial line drawn from the axial center-line of said shaft.
the other end of said pair of parallel arms are jour-naled to one of said gripping members such that the ends there-of lie along a common radial line drawn from the axial center-line of said shaft.
8. The apparatus of Claim 1 wherein said shaft is splined along a marginal length thereof, said first member has a complementary splined connection which slidably engages the spline of the shaft thereby enabling the shaft to impart rota-tional energy into both said first and second mount members.
9. The apparatus of Claim 1 wherein means are provi-ded by which said main frame can be rotated 180° about an axis which lies normal to the axial centerline of the shaft;
and means by which said main frame member can be moved laterally respective to the axial centerline of the shaft;
whereby the jaws can engage and remove a threaded mem-ber from one end of a pipe joint, the apparatus can move later-ally away from the pipe joint and rotate 180° respective there-to while the joints moves along its axial centerline, and the jaws can then be aligned to engage and remove another threaded member from the other end of the pipe joint.
and means by which said main frame member can be moved laterally respective to the axial centerline of the shaft;
whereby the jaws can engage and remove a threaded mem-ber from one end of a pipe joint, the apparatus can move later-ally away from the pipe joint and rotate 180° respective there-to while the joints moves along its axial centerline, and the jaws can then be aligned to engage and remove another threaded member from the other end of the pipe joint.
10. The apparatus of Claim 1 wherein said gripping members are provided with jaws which face radially inwardly towards the shaft whereby movement of said first mount member away from said second mount member causes the jaws to travel radially inwardly towards one another so that the jaws jointly grip any object placed therebetween;
said short arms include a plurality of pairs of paral-lel arms radially spaced about the axial centerline of said shaft, each of said pairs of parallel arms are arranged such that the ends thereof which are journaled to said second mount member each lie along a common radial line drawn from the axial centerline of said shaft;
the other end of said pair of parallel arms are jour-naled to one of said gripping members such that the ends there-of lie along a common radial line drawn from the axial center-line of said shaft.
said short arms include a plurality of pairs of paral-lel arms radially spaced about the axial centerline of said shaft, each of said pairs of parallel arms are arranged such that the ends thereof which are journaled to said second mount member each lie along a common radial line drawn from the axial centerline of said shaft;
the other end of said pair of parallel arms are jour-naled to one of said gripping members such that the ends there-of lie along a common radial line drawn from the axial center-line of said shaft.
11. The apparatus of Claim 1 wherein a cleaning de-vice for cleaning threads is mounted on said main frame;
said cleaning device includes a rotatable cleaning head having a cleaning element arranged about an axis which coincides with the axial centerline of the first recited shaft.
said cleaning device includes a rotatable cleaning head having a cleaning element arranged about an axis which coincides with the axial centerline of the first recited shaft.
12. The apparatus of Claim 1 and further including a cleaning device for cleaning pipe threads;
said cleaning device being mounted on said main frame and includes a cleaning head, means rotatably mounting said cleaning head along the longitudinal axial centerline of said shaft; said cleaning head includes a cleaning element radially spaced from said axial centerline which engages the threads of the pipe ends.
said cleaning device being mounted on said main frame and includes a cleaning head, means rotatably mounting said cleaning head along the longitudinal axial centerline of said shaft; said cleaning head includes a cleaning element radially spaced from said axial centerline which engages the threads of the pipe ends.
13. A machine for rotating coacting threaded members to enable the members to be made up and broken out respective to one another, said machine having a powered shaft which rotates about its axial centerline, a rotatable head assembly connected to be rotated by said shaft;
said head assembly having spaced first and second mount members, a first plurality of arms having one end jour-naled to said first mount member in radially spaced relationship respective to one another and a second plurality of arms having one end journaled to said second mount member in radially spaced relationship respective to one another;
said first and second mount members having a center lying along the axial centerline of the shaft;
a plurality of jaw means radially spaced from the axial centerline of the shaft; one of said first plurality of arms connecting one of said jaw means only to one of said mount means; one of said second plurality of arms connecting said jaw means only to the other of said mount means; there being one jaw means attached to one arm of said first plurality of arms and to one arm of said second plurality of arms;
and means for moving said mount means respective to one another along the axial centerline of the shaft, to thereby cause the jaw means to move radially respective to one another and to the shaft, so that the jaw means can engage and rotate one of the coacting threaded members.
said head assembly having spaced first and second mount members, a first plurality of arms having one end jour-naled to said first mount member in radially spaced relationship respective to one another and a second plurality of arms having one end journaled to said second mount member in radially spaced relationship respective to one another;
said first and second mount members having a center lying along the axial centerline of the shaft;
a plurality of jaw means radially spaced from the axial centerline of the shaft; one of said first plurality of arms connecting one of said jaw means only to one of said mount means; one of said second plurality of arms connecting said jaw means only to the other of said mount means; there being one jaw means attached to one arm of said first plurality of arms and to one arm of said second plurality of arms;
and means for moving said mount means respective to one another along the axial centerline of the shaft, to thereby cause the jaw means to move radially respective to one another and to the shaft, so that the jaw means can engage and rotate one of the coacting threaded members.
14. A tool for rotating coacting threaded members to enable the members to be made up and broken out respective to one another comprising:
a plurality of circumferentially spaced-apart jaw means for releasably engaging one of the coacting threaded mem-bers;
a first and a second plurality of arm members for mov-ing said jaw means radially towards one another and into grip-ping contact with the threaded member;
first and second rotatable members for imparting rota-tional motion into said jaw members; means for moving said first and second rotatable members toward and away from one another;
one end of each arm member of said first and second arm members being journaled to said jaw means; the other end of said first plurality of said arm members being journaled to said first rotatable member, the other end of said second plu-rality of said arm members being journaled to said second rota-table member;
whereby said rotatable members can be moved towards one another to thereby move the jaws together, and the rotatable members can be rotated to cause the jaws to rotate about a com-mon axis;
and further including a cleaning device for cleaning the threaded members; a main frame; a cleaning head having a cleaning element circumferentially disposed about a center;
means by which said cleaning device and said tool are mounted to said main frame such that the shaft and the center lie along a common axial centerline.
a plurality of circumferentially spaced-apart jaw means for releasably engaging one of the coacting threaded mem-bers;
a first and a second plurality of arm members for mov-ing said jaw means radially towards one another and into grip-ping contact with the threaded member;
first and second rotatable members for imparting rota-tional motion into said jaw members; means for moving said first and second rotatable members toward and away from one another;
one end of each arm member of said first and second arm members being journaled to said jaw means; the other end of said first plurality of said arm members being journaled to said first rotatable member, the other end of said second plu-rality of said arm members being journaled to said second rota-table member;
whereby said rotatable members can be moved towards one another to thereby move the jaws together, and the rotatable members can be rotated to cause the jaws to rotate about a com-mon axis;
and further including a cleaning device for cleaning the threaded members; a main frame; a cleaning head having a cleaning element circumferentially disposed about a center;
means by which said cleaning device and said tool are mounted to said main frame such that the shaft and the center lie along a common axial centerline.
15. The machine of Claim 13 and further including a cleaning device for cleaning the threaded members; a main frame;
a cleaning head having a cleaning element circumferentially dis-posed about a center; means by which said cleaning device and said tool are mounted to said main frame such that the shaft and the center lie along a common axial centerline.
a cleaning head having a cleaning element circumferentially dis-posed about a center; means by which said cleaning device and said tool are mounted to said main frame such that the shaft and the center lie along a common axial centerline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000368113A CA1165544A (en) | 1981-01-08 | 1981-01-08 | Protector removal tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000368113A CA1165544A (en) | 1981-01-08 | 1981-01-08 | Protector removal tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1165544A true CA1165544A (en) | 1984-04-17 |
Family
ID=4118865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000368113A Expired CA1165544A (en) | 1981-01-08 | 1981-01-08 | Protector removal tool |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1165544A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014031969A1 (en) * | 2012-08-23 | 2014-02-27 | Peter Kroll | Tool for installing and removing threaded members |
| WO2020197412A1 (en) | 2019-03-27 | 2020-10-01 | Mhwirth As | Methods and systems for earth drilling |
-
1981
- 1981-01-08 CA CA000368113A patent/CA1165544A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014031969A1 (en) * | 2012-08-23 | 2014-02-27 | Peter Kroll | Tool for installing and removing threaded members |
| GB2519485A (en) * | 2012-08-23 | 2015-04-22 | Peter Kroll | Tool for installing and removing threaded members |
| GB2519485B (en) * | 2012-08-23 | 2018-08-15 | Kroll Peter | Tool for installing and removing threaded members |
| US10828752B2 (en) | 2012-08-23 | 2020-11-10 | Peter Kroll | Tool for installing and removing threaded members |
| WO2020197412A1 (en) | 2019-03-27 | 2020-10-01 | Mhwirth As | Methods and systems for earth drilling |
| US11725469B2 (en) | 2019-03-27 | 2023-08-15 | Mhwirth As | Methods and systems for earth drilling |
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