U.S. patent number 3,702,640 [Application Number 05/027,929] was granted by the patent office on 1972-11-14 for tipping girder for the transfer of rods or tubular elements.
This patent grant is currently assigned to Compagnie Francaise Des Petroles. Invention is credited to Bernard G. Cintract, Rene G. Sevin.
United States Patent |
3,702,640 |
Cintract , et al. |
November 14, 1972 |
**Please see images for:
( Certificate of Correction ) ** |
TIPPING GIRDER FOR THE TRANSFER OF RODS OR TUBULAR ELEMENTS
Abstract
A tipping girder for the transfer of rods or tubular elements,
comprising a plurality of adjustable guide nippers movably mounted
on the girder for movement transverse to the longitudinal axis
thereof, and adjustable locking nippers movably mounted on the
girder for movement parallel and transverse to the longitudinal
axis thereof. The locking nippers are constructed to automatically
engage and lock a rod on the girder when it is moved away from a
horizontal position.
Inventors: |
Cintract; Bernard G. (Boulogne,
FR), Sevin; Rene G. (Garges-les-Gonesse,
FR) |
Assignee: |
Compagnie Francaise Des
Petroles (Paris, FR)
|
Family
ID: |
21840580 |
Appl.
No.: |
05/027,929 |
Filed: |
April 13, 1970 |
Current U.S.
Class: |
175/85;
414/22.55 |
Current CPC
Class: |
E21B
19/155 (20130101) |
Current International
Class: |
E21B
19/00 (20060101); E21B 19/15 (20060101); E21b
019/00 () |
Field of
Search: |
;175/85,5,7,8,10
;214/2.5 ;254/139 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Leppink; James A.
Claims
We claim:
1. A girder assembly for the handling and transfer of elongated
tubular members from one position to another, comprising:
a. means mounting one end of the girder for rotation about a
horizontal axis,
b. means coupled to the girder for controlling the rotation of the
girder about said axis,
c. an abutment stop member mounted adjacent said one end of the
girder and movable with respect thereto in a direction parallel to
said axis,
d. a plurality of guide members mounted on the girder and movable
with respect thereto in a direction parallel to said axis,
e. a transfer member mounted on the girder and movable with respect
thereto in a first direction parallel to said axis and in a second
direction parallel to the longitudinal axis of the girder,
f. openable and closable gripping means mounted on the transfer
member for lockingly engaging a tubular member being handled,
g. means individually coupled to the stop member and the guide
members for controlling the movement of the stop member and the
guide members in a direction parallel to said axis,
h. means coupled to the transfer member for controlling the
movement of the transfer member in said first and second
directions, and
i. means coupled to the gripping means for controlling the opening
and closing of the gripping means.
2. A girder assembly, as in claim 1 wherein said guide members each
comprise a guide nipper having an adjustable opening for the
reception of tubular members of different size, said guide nipper
comprising movable levers and means for opening and closing said
levers so as to release or retain a tubular member.
3. A girder assembly, as in claim 1, wherein said gripping means
comprises locking nippers having a frame with two side plates
between which moves a pair of arms having a curved end and a body
including a groove, said arms being pivoted on a shaft on said
frame, an angle-shaped jaw movable along a slide inside the curved
end of each arm and perpendicularly to said frame, said jaw being
positioned between two mutually opposing springs which rest on each
of said side plates, said arms being opened and closed by the
simple longitudinal movement of a shaft whose end is moved in said
groove in each of said arms.
4. A girder assembly, as in claim 1, wherein said gripping means is
constructed to automatically engage and lock a tubular member on
the girder when it is moved away from a horizontal position.
5. A girder assembly, as in claim 4, further comprising a mobile
cart which can be moved parallel to the longitudinal axis of the
girder, said transfer member being attached to said cart.
6. A girder assembly, as in claim 5, wherein said cart is
controlled by a jack that is secured to a support plate movably
mounted on the girder.
7. A girder assembly, as in claim 2, wherein said guide nippers
each comprises a frame having an inwardly curved portion for the
guidance of large-diameter tubular members, two symmetrical arms
whose opposing edges define surfaces for the guidance of all such
members, said arms being movable toward and away from each other on
said frame, means for retaining said arms in a desired position on
said frame, two pivotable jacks on said frame, each of said jacks
having rods with ends connected to said movable levers for
retaining tubular members, two small connecting rods pivoted at one
of their ends on said frame and having a shaft at the other end
thereof that is slidable in a groove in the adjacent arm, each of
said retaining levers being pivoted on the adjacent shaft and being
movable to an open position releasing the tubular member when the
rod of said jack is withdrawn to a retaining position when the rod
of said jack is extended.
8. A girder assembly as in claim 1, wherein said gripping means
comprises a locking nipper in the middle portion of the girder,
there are three guide members mounted respectively on the lower
portion of the girder, and the stop member is situated below the
lower guide member, each of said guide members and said stop being
connected to a jack for moving said guide members and said stop
perpendicularly to the girder.
9. A girder assembly, as in claim 1 further comprising, a
box-shaped element at the lower end thereof having two bearings
adapted to receive a shaft for pivotally supporting said girder and
having two-hook-on points, one for the attachment of the rod of a
balancing jack and the other one for the attachment of the rod of a
control jack.
Description
BACKGROUND OF THE INVENTION
This invention relates to a tipping girder for the transfer of rods
or tubular elements and, more particularly for the movement of such
rods or tubular elements from a horizontal position to a vertical
position. This kind of handling is required, for example, to
provide a derrick with rods when these elements are lined up in
horizontal stacking systems.
There are already in existence devices for moving rods from a
horizontal position in the vicinity of a derrick to a vertical
position on the derrick. One of them consists in guiding a mobile
arm, serving as a support for the transported element, by
controlling the ends of the arms so that they will rest in the
guide rails mounted on the derrick itself. The movement is
performed either with the help of a handling cart or with the help
of the pulley block of the derrick. In spite of the advantages of
this system, it is subject to a significant disadvantage in that it
requires space on the derrick. Furthermore, this kind of system
lacks rapidity, especially when the pulley block of the derrick is
used to control the move-ment of the mobile arm. One can obtain
slightly greater speed by using a motorized cart but regardless of
the method of movement used, one runs, by virtue of the very nature
of the movement of the carrying arm on the rails, into difficulties
when it comes to assuring practical guidance of the control cables
of the attachment organs for the elements transported on the mobile
arm.
In order to eliminate this inconvenience, attempts have been made
to eliminate the guide rails by replacing the carrying arm of the
rod element with a tipping girder; but the tipping girder cannot be
easily moved laterally, as was the case with the carrying arm of a
rod in order to move the latter into the axis of the drill hole,
and the positioning of the horizontal pivot of the girder was so
selected that the tipping of the girder in the vertical position
would move the transported rod along the axis of the drill hole. As
a result, the handling time for the lowering or raising of the set
of rods was necessarily increased by the need for raising the
pulley block of the derrick prior to tipping the girder into the
vertical position.
SUMMARY OF THE INVENTION
The main object of this invention consists in a tipping girder for
the purpose of transporting a rod or any other tubular element from
one position to another, characterized by the fact that the girder
involves at least one means for the guidance of the transported
element and locking nippers for the element, the girder involving
at least one mechanism for the movement of the locking nippers so
as to move it from a position near the girder to a position spaced
therefrom, as well as means for controlling the opening or the
closing of the locking nippers.
The advantage of such a girder is represented by the fact that it
can be used in any automated system without involving any loss of
time whatsoever. If we take the example of the movement of rods of
a horizontal stacking system up to the derrick with a view to the
lowering of the set of rods, we can see that we are no longer
forced to select the placement of the girder with precision
because, after tipping into the vertical position, it suffices to
activate the mechanism for moving the locking nippers for the rod
so as to move the latter away from the girder a sufficient distance
to reach the axis of the drill hole. Furthermore, since the element
can be held against the tipping girder during its entire movement,
it is no longer necessary to wait for the pulley block of the
derrick to be turned aside in order to control the pivoting motion
of the girder, since the girder no longer prevents the movement of
the pulley block.
Likewise, during the operation of loading the transported element,
it is no longer necessary to move the element to an accurate
position on the girder itself since the girder can, by the simple
action of the mechanism for moving the locking nippers, pick up the
element at the position where it has been moved and then move it
back against it.
Finally, the control links for the various members for the guidance
and locking of the rods are only subjected to a rotary movement
below the girder and not to a complex rotary and longitudinal
displacement movement, as in the case of a carrying arm whose ends
are guided by rails, and the girder therefore offers remarkable
qualities of easy handling and safety.
Another object of the invention is a girder of the above type in
which the guidance means consists of nippers with an adjustable
inside opening so as to guide rods of varying dimensions
effectively, said nippers furthermore involving an automatic
control means for the opening and closing of its jaws, so as to
pick up or release a rod element, as well as a displacement
mechanism permitting its approach toward or movement away from the
girder.
Such a system in particular enables us to move large-dimension
rods, for example, an assembly of three 9-meter rods, which could
not be envisaged with existing tipping girders because these would
have relatively reduced dimensions not only to reduce the weights
in motion but also to prevent the complete rise of the pulley block
when the rods are moved on the derrick, so that their dimension
could not exceed 9 meters.
The system involved in this invention furthermore offers the
advantage of being economical and efficient because only a single
locking mechanism is required and the guidance means can be very
simple, since considerable leeway can be left between the
transported element and the walls of the guidance means. This
leeway can furthermore be provided for when the rods are presented
in positions not parallel to the axis of the girder, since
movements of the guidance means, perpendicular to the girder, are
controlled individually.
Another object of the invention is a girder of the above type,
involving furthermore, in the vicinity of its axis of articulation,
a stop, as well as a mechanism for the movement of said stop, so as
to move it away from or bring it back toward the axis of the
girder. When it is necessary to supply a derrick, not with rods,
but with particularly heavy tubing elements, it thus becomes
possible to use the same girder guidance means in order to transfer
three elements without having to use the locking nippers since the
tubing element rests, with one of its ends, on the stop.
Another object of the invention is a girder of the above types,
wherein the locking nippers involve a frame having two side plates
between which there moves a pair of arms having a curved end and a
body including a groove, said arms being pivoted on an axis of said
frame, a jaw in the form of an angle capable of being moved along a
slide inside the curved end of each arm and perpendicularly to said
frame, said jaw being held between two springs which work against
each other by resting on each of said side plates, the opening and
closing of the arms being accomplished by the simple longitudinal
movement of a shaft whose end is moved into said groove which is in
each of said arms.
The advantage of such a combination is that it enables us, on the
one hand, to pick up a rod by the simple opening of the nippers and
to introduce jaws around said rod, followed by the closing of the
nippers and, on the other hand, it also facilitates the automatic
locking of the rod due to the effect of its own weight, the moment
the girder ceases to be horizontal.
Another object of the invention is a tipping girder involving
locking nippers of the type indicated and furthermore including a
mobile cart which can be moved parallel to the axis of the girder,
said nippers and its control means being attached to said cart.
When a girder picks up a horizontal rod and tips it vertically, the
jaws of the angle-shaped locking nippers lock the rod as explained
above. The mobility imparted to the nippers, due to the fact that
the latter forms one piece with a cart that can be moved parallel
to the axis of the girder, thus enables us to lower the rod until
it runs into a suitable obstacle that serves as a point of support
for it. It then suffices to continue the movement of the cart
slightly downward in order to release the rod from the corners of
the jaw. We thus get an extremely reliable and easily handled means
for the movement of very long and relatively heavy rods from a
horizontal position to a vertical position.
Other purposes and features of the invention will emerge from the
following specification made with reference to the attached drawing
which, by way of nonrestrictive example, represents one way of
executing a tipping girder for the transport of elements from a
first position to a second position, regardless whether they are or
are not situated in the same plane.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic elevational view of the girder of the present
invention in course of operation;
FIG. 2 is a schematic plan view of the girder in the horizontal
position, loaded with a drilling rod;
FIG. 3 is a view similar to that of FIG. 2, wherein the girder is
loaded with a tubing element;
FIG. 4 is a schematic view of one of the variable-diameter guidance
nippers, adjusted for the reception of elements with maximum
diameter;
FIG. 5 is a schematic view of the nippers shown in FIG. 4, adjusted
for the reception of minimum-diameter elements;
FIG. 6 is a schematic view of the nippers for the locking of the
girder in the closed position;
FIG. 7 is a schematic view of the locking nippers in the open
position;
FIGS. 8, 8a and 8b represent, respectively, the partial schematic
views of the jaw of the locking nippers, seen in elevation; of the
position of said jaw as seen from the side; and of the position
corresponding to the end of the rod held by said nippers, seen in
elevation;
FIGS. 9, 9a and 9b are views corresponding to those shown in FIGS.
8, 8a and 8b, when the end of said rod comes into contact with a
stop; and
FIG. 10 is a schematic view of the control jacks for the tipping
girder.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Since the girder can be installed so as to be used on a derrick or
any other type of device, the foundation on which it rests has
therefore not been shown in FIG. 1. It will be understood,
therefore, that girder 1, consisting of a reticulated structure 2,
with a rectangular cross-section at the base in the example shown
herein, may be mounted on any suitable support. For this purpose,
the reticulated structure 2 is connected to an element in box 3
having two bearings 4 for the reception of an articulation shaft
shown schematically at 5 and two hook-on points 6 for two jacks 7
controlling, respectively, the balancing of the girder and its
tipping around the axis of shaft 5.
As an illustrative example, the girder has three nippers serving
for the guidance of the transported elements. These guidance
nippers 8, 9 and 10 can be identical or on the other hand, they can
have dimensions appropriate for the diameters of the elements
transported. In addition to these nippers, whose number can be
increased or decreased, the girder has locking nippers 11 and a
stop 12.
The stop 12 as well as each one of nippers 8 to 11 can be moved
perpendicularly to the longitudinal axis of the girder and
preferably parallel to the rotation axis 5. FIGS. 2 and 3 show the
respective movements of each of these loading members. These
movements are controlled by jacks 13, 14 and 15 for nippers 8, 9
and 10 and by jacks 16 and 17 for locking nippers 11 and stop 12.
It is clear that the body of each of these jacks 13 to 17 can be
attached to its own frame (not shown), which itself will constitute
one piece with the girder, and that the connection of each of the
individual frames to the girder may be fixed, or removable, or may
permit their automatic movement. Likewise, rods 13a to 17a of jacks
13 to 17, respectively, can be attached to an appropriate frame,
supporting each of the nippers or stops, or can be directly
attached to one of the elements constituting the structure of the
nippers or the stops.
In the present embodiment, the jack 16 for the locking nippers 11
is attached to a suitable cart which can be moved parallel to the
axis of the girder and is controlled by a jack 18 attached to a
movable support plate 19. The jack 18, therefore, controls the
movement of the cart carrying jack 16 and the movement of the
nippers 11 parallel to the longitudinal axis of the girder. In the
illustration in FIG. 2, the locking nippers 11 are in the upper
position and the cart carrying jack 16 is in a position removed
from the plate 19. In this figure, rod 20 is simply guided by
nippers 8 and 10 and it is kept locked by nippers 11.
When the elements to be transported, such as tube 21, has a wide
diameter and when it is rather heavy, as shown in FIG. 3, the two
guide nippers 9 and 10 and the stop 12 may be used to support it.
In order to load tubes, such as 21, when they have too large a
diameter, one can remove the support plate 19 toward the top of the
girder. As a matter of fact, since the girder is generally used to
tip elements similar to rods 20 or to pipes 21 for a long period of
time, it is not necessary to provide automatic control for the
movement of the assembly consisting of plate 19 and jacks 16 and
18. In practice it suffices to move this assembly by hand.
The nippers 8, 9 and 10 are intended to permit the effective
guidance of small-diameter rods or large-diameter pipes in
accordance with the invention. Therefore, nippers similar to those
shown in FIGS. 4 and 5 can be used, for example, to guide pipes
with a diameter of 33 centimeters and a weight of 5 tons to rods
with a diameter of 9 centimeters.
Referring now to FIG. 4, for example, we see that pipe 21 is guided
by frame 22 of the guide nippers, two arms 23 which are symmetrical
with respect to the axis 24 in the figure and the two oscillating
levers 25. Each lever 25 turns around a shaft 26 of a small
connecting rod 27, pivoted on shaft 28 of frame 22. The shaft 26
moves in a groove 33 in arm 23. The lever 25 is connected by shaft
29 to rod 30 of jack 31. If we assume that the position arm 23 has
been adjusted at a suitable level with the help of screw 32,
passing into a threaded sleeve 23a of arm 23, in order to receive
large-diameter pipes, we can see that it is sufficient merely to
return the rod 30 of jack 31 in order to tip levers 25 around their
shafts 26 and thus release the pipe 21.
When we want to handle rods with smaller diameters, the height of
arm 23 can be adjusted by movement of screw 32. FIG. 5 shows the
guide nippers represented in FIG. 4, in the case where the girder
must tip a small-diameter rod 20. The parts of the guide nippers
have thus been shown here with the same numerical references. Since
arms 23 are moved closer toward each other when a small diameter
rod is to be supported, the shafts 26 of the small connecting rods
27 assume a new position in their grooves 33 and rotate the small
connecting rods around their shafts 28. The oscillating levers 25,
which accompany the shafts 26 in their descent, in turn rotate the
jacks 31 around their shafts 34. The shape of the lower portion 23b
of arms 23, when we have small-diameter rods, enables us to
compensate for the large gap between the circumference of rod 20
and the inside contour 22a of frame 22. Thus rods, such as 20, are
effectively guided in spite of their small-diameter. Their
disengagement is accomplished as hereinbefore explained through the
withdrawing of the rods 30. This withdrawal of the rods 30 of the
jacks 31 causes the levers 25 to tip around the shafts 26. It is
clear that the jacks 31 can be simultaneously controlled or
individually controlled.
Any suitable means, such as jacks (not shown) could be used to move
the guide nippers perpendicularly to the axis of the girder. Such
means could be attached to frame 22. As far as the device for the
positioning of the level of arms 23 is concerned, it is obvious
that adjusting screws 32 could be replaced by series of
perforations made in frame 22 along two symmetrical and inclined
axes, With screws and bolts enabling us easily to attach the arms
23, which carry at least two holes for fixation at the desired
levels.
The locking nippers 11 have been shown in FIGS. 6 and 7 in two
positions, that is, respectively, open and closed. The nippers 11
includes includes a frame 35 having a shaft 36 on which two arms 37
pivoted. The forward portion 35a of the frame has a flared shape
which facilitates the introduction of a rod. The rear portion may
be connected to the rod 16a of jack 16 in any suitable manner (not
shown).
Each arm 37 has a groove 38 in which moves the end 39 of a rod of
jack 40 whose axis is in the plane of symmetry 41. The forward
portions 37a of arms 37 are inclined, as shown in FIG. 8, and serve
as guides for the floating jaws 42 which are equipped with knurled
portions 43. The jaws 42, visible in FIGS. 8 and 8a, are supported
by shafts 44, in FIGS. 6, 7 and 8a, and are engaged by two springs
45 and 46 surrounding each shaft 44 so as to keep each jaw 42 in a
middle position with respect to frame 35.
When the rod end 39 of jack 40 is extended outward as in the case
of FIG. 7, arms 37 open up and release the transported rod. When
rod end 39 is pulled back in as shown in FIG. 6, the jaws 42 are
moved along with the arms 37 and close upon the rod introduced
between the portions 35a of he frame. The moment the girder is
inclined to a predetermined extent, the weight of the transported
rod causes angle-shaped jaw 42 to slide downward, as shown in FIG.
8, bringing about a slight compression of spring 46, FIG. 8a. When
the girder assumes the vertical position, arm 37 rests on frame 35,
thus lightening the load on shaft 36. In FIG. 8b, we show the end
20a of the rod moved into the vertical position and below it a stop
47 which can also, for example, be the end of another rod.
If we want to connect the rods using conventional joints, we must
first of all unlock jaw 42 while maintaining the guidance and
support of the rod. For this purpose, we effect the movement of rod
18a of jack 18, FIG. 2, which brings about the movement of the
locking nippers 11 and the control jack 26 along the girder, until
end 20a of the rod rests on stop or piece 47. When the descending
movement of the frame 35 continues, the jaw 42 goes up with respect
to arm 37, as shown in FIGS. 9, 9a and 9b, which releases the rod
from the jaws. Thereafter, the arms 37 and jaws 42 are opened by
the outward extension of rod end 39 of jack 40. The springs 45 and
46 then return the jaws 42 to their middle position relative to the
frame 35, and the nippers are immediately ready for another
operation.
The advantages of such a girder reside mainly in the flexibility of
its employment and in its efficiency. We have seen, in effect, that
such a girder can transport all kinds of elements, rods or pipe,
with short or long dimensions and with diameters that can vary
within large proportions, and that it can handle heavy pipes by
using a stop at the base of the girder. Furthermore, the girder
offers the advantage of being able to pick up the element presented
to it or the element which is waiting in a position that can vary
by a distance equal to the lateral clearance of the nippers. We can
further improve the flexibility and efficiency of the girder by
balancing it with a first jack 48, as in FIG. 10, and by
controlling its movement with a maneuvering jack 49. For this
purpose, the lower portion of jack chamber 48, filled with a
suitable fluid such as oil is connected by conduit 50 to a piston
and cylinder unit 51, whereas the upper portion of the jack chamber
is connected by conduit 52 to a piston and cylinder unit 53. While
the girder is tipping, the piston 54 of jack 48 runs through the
length of the jack chamber, whereas the oil levels of units 51 and
53 vary in proportion to the course of the jack. A gas, such as
nitrogen, in the units 51, 53 may be compressed more or less by
introducing new quantities of oil through circuits 55 or 56 in
order to obtain the desired variation in the restoring-force
torque. We then need a relatively low power to control the
maneuvering jack 49 by means of circuits 57 and 58. We thus
increase the speed of the girder's tipping.
Along with the greater handling flexibility obtained by the
clearance of the locking and guide nippers, this increased element
transfer speed helps increase the area of application of the
tipping girder which has just been described and which can also be
used to equip an automatic system for the horizontal stacking of
rods, as well as in a system for the alignment of pipes by means of
overhead traveling cranes, since the girder is capable of grasping
any element in order to move it from a first position to a second
position, which may or may not be situated in the same plane.
* * * * *