FR2531690A1 - TURRET MACHINE HAVING A REMOVABLE ORIENTATION CROWN AND METHOD OF REMOVING THE CROWN OF SUCH A GEAR - Google Patents

Abstract

THE INVENTION RELATES TO A MACHINE INCLUDING A BODY 1, A TURRET 4 ROTATING ON THIS BODY, AN ORIENTATION RING 8 ARRANGED BETWEEN THE TURRET AND THE BODY, AND A HANDLING 7 MOUNTED ON THE TOWER 4 AND SUITABLE EVOLVE IN A VERTICAL PLAN. THE TWO ELEMENTS 27-28 OF A PIVOTING ASSEMBLY, CONNECTED WITH ONE HORIZONTAL PIVOTING AXIS 29 SENSITIVELY PERPENDICULAR TO THE PLANE OF EVOLUTION OF THE HANDLING DEVICE, ARE LIKELY TO BE REMOVABLE FIXED 31, A 28 ON A FIRST PART 3 - SUPPORT OR FRAME -, THE OTHER 27 ON THE TURRET 4, THE HANDLING 7 BEING LIKELY TO BE FIXED 9 ON THE FIRST PART 3. THE INVENTION IS APPLICABLE TO THE REALIZATION D 'A FIXED-MOUNTED CRANE.

Description

I Turret machine with detachable crown and

  method of removing the crown of such a machine.

  The invention has been realized in the field of stationary mounted cranes, in particular cranes mounted on floating platforms. The following description therefore relates to this type of crane, but it should be understood that the general aspects of the invention can receive a much larger application than that of fixed cranes alone, an application which also includes certain public works machinery, such as

excavators.

  These stationary cranes mounted on platforms

  Floating forms have a turret that rotates about a vertical axis by means of a slewing ring In service, it is necessary to carry out periodic maintenance and / or adjustment work, and sometimes to repair damage caused by the slewing rings Given the mass of the turret and the boom it carries, this work must involve a handling equipment Or, on the floating platforms of such gear n ' exist, except, of course, the

  crane itself, object of disassembly.

  The idea thus took shape to design new provisions, which would allow, by using the crane itself, to make him carry out the handling necessary for its own maintenance and / or the repairs of one of its constituents

  the most exposed: its orientation ring.

  The invention has as its first general object such a new machine, it also has for another object a method

  removing the orientation ring of this machine.

  The invention is therefore first of all relating to a machine comprising: a support resting on a support; a turret rotatably mounted on this frame; an orientation ring disposed between the turret and the frame for the rotational mounting of the turret and comprising a frame portion provided with a removable attachment device on the frame, a turret portion provided with a

  removable fastening device on the turret and a device

  relative rotation between these parts frame and turret; and a manipulator mounted on the turret and able to evolve

in a vertical plane.

  The two elements of a pivotal assembly, interconnected by a horizontal pivot axis substantially perpendicular to the plane of evolution of the manipulation member, are capable of being fixed in a removable manner, one on a

  first support part or the other one on the turret, but

  since said manipulator is capable of being fixed

on said first piece.

  Preferably, the following advantageous provisions are furthermore adopted: a special deposition support has a height substantially equal to that of the fixing face of the ring on the frame and is disposed close to the frame; this machine being a crane, whose handling member is constituted by a handling hook, a sling of adjustable length is capable of connecting the first part to a zone of the opposite turret, with respect to the axis of

  rotation of the turret, the handling hook.

  The subject of the invention is also a method of depositing the steering ring of such a machine according to which the zone of the first is placed in substantial mutual coincidence.

  room on which the organ of manipulation is likely to be

  pulation, and the plan of evolution of this manipulative organ; we fix the two elements of the pivoting assembly on the first

  piece and on the turret, respectively; the organ of mani-

  pulation on the first piece; we remove the respective devices

  fixing the crown on the frame and on the turret; we are

  the relative evolution of the manipulator in its plan of evolution so as to rotate the turret relative to

  to the first piece around the horizontal pivot axis.

  The following provisions are furthermore preferred

  the liberated crown is moved from its

  fastening, by shifting, until said special support for removal; when the machine is a crane, after fixing the hook on the first part, it controls the raising of this hook relative to the turret, it causes the tilting of this turret around the pivot axis and limit this

  tilt by adjusting the length of the sling.

  The invention will be better understood, and features

  secondary risks and their benefits will become apparent during

  the description of an embodiment given below as an example.

  It is understood that the description and drawings

  are only indicative and not limiting.

  Reference will be made to the accompanying drawings,

wherein: -

  FIG. 1 is a simplified view, in elevation

  tion of a crane installed at a fixed location on the deck of a floating platform, in its usual use configuration; Figure 2 is a view similar to that of Figure 1, the same crane, but in an intermediate configuration of implementation devices for repairing the slewing ring; FIG. 3 is a view similar to that of FIG.

  FIG. 1, of the same crane, in the final repair configuration.

  orientation ring; and FIG. 4 is a section through the axis of the

  turret, of the crane of Figures 1 to 3.

  The crane shown is mounted on a frame 1, itself definitively fixed by welding 2 on the main deck 3 of a ship or more generally of a platform

floating.

  Conventionally, the crane comprises a vertical shaft 4 at the top of which extends, horizontally, an arrow 5 A lifting cable 6 is suspended at the end of the boom 5 and supports a handling hook 7 A crown of 8 is normally interposed between the shaft 4 and the

  frame 1, as shown in FIG.

  With reference to this figure 1, it is noted that fixed points of attachment, fixed on the bridge 3, or integral with this point, are provided. This is a clevis 9, on which the hook 7 is capable of to be hooked, and which is arranged substantially in the plane of evolution of the hook 7, on the same side as the hook relative to the barrel 4; of another clevis 10, on which the free end 11 of a sling 12 is likely to be hooked, and which is arranged on the side of the barrel 4 opposite that o is fixed

clevis 9.

  In addition, the sling 12 is itself suspended

  fat 4 being fixed on the side of this barrel opposite the arrow 5.

  The sling 12 is provided with a device 13 for adjusting its length.

  In the configuration of FIG. 1, neither the hook 7 nor the end

  mité libre 11 are not hung on their respective clevises.

  Moreover, the plane of the figure coincides with the plane containing

  the cable 6, the sling 12 and the two clevises 9 and 10.

  A special support 14 for removing the crown

  8 is disposed near the frame 1, on the bridge 3.

  FIG. 4 shows the constitution details of the orientation ring 8 and its fasteners. This ring 8 comprises a ring "turret" 15 fixed by bolts 16 to a lower flange 17 of the fat, welded (21) to the barrel 4 ; a ring "frame" 18 fixed by bolts 19 on an upper flange 20 of the frame, welded (22) on this frame 1; and rollers 23 which are interposed between the two rings 15 and 18 for their relative rotational mounting around

of an axis 4 a.

  Two bases for detachably fixing a pivoting mounting device 24 are integral, one of the barrel 4, the other 26 of the flange 20 of the frame 1 and the adjacent bridge 3. As can be seen from FIG. 24 comprises two elements 27 and 28 and a horizontal pivot axis 29 which carries out the pivotal mounting of these elements 27 and 28 These are also provided with fastening flanges 30 which allow precisely the attachment of each element

  on the seats 25 and 26, this by means of removable bolts 31.

  It will also be noted that: the fixing seats are contained or close to the plane containing the yokes 9 and 10; the special depositing support 14 is mounted adjustable in height (by cylinders 32 for example), so that its upper face can be arranged at a height H of the face of the bridge 3 equal to the height of the upper face 20 a of the flange 20 relative to the same bridge 3; of course, one of the rings 15, 18, here the ring

  "frame" 18, at its periphery provided with a ring gear 33 of

  relative rolling in rotation of one ring relative to the other; the crane is provided with a connection device 34 to

  a supply of electrical energy.

  In the configuration of FIG. 1, the source of electrical energy is shown schematically by a cable 35 connected to a network, for example the network of the floating platform.

  configurations of figures 2 and 3, the energy source has been

  matted as being a trans-

table 36.

  Given the means constituting the crane

  or special, which has been provided for, the removal of the crown of

  8, by hypothesis, or in damage, or requiring a periodic maintenance revision, can be carried out in the following manner The fat 4 of the crane is oriented so as to place in the same plane the cab Ie 6 and sling 12, and the screeds

  9 and 10 In the case where the orientation ring 8 is momentarily

  temporarily unusable, it would still be possible to weld on

  the main deck 3 of new clevises 9 and 10 which are

  placed in the plane of said cable 6 and sling 12 -

  The crane is thus placed in the configuration represented on the

figure 1.

  From this configuration, it is easy to achieve that of Figure 2 by: hooking hook 7 to the yoke 9; hanging the end 11 of the sling 12 to the yoke 10; tending the cable 6 and sling 12; putting in place the pivoting device 24 by means of the bolts 31; finally removing the bolts 16 and 19 fixing the

crown of orientation 8.

  Generally, the power cable 35 is fixedly connected, and it is necessary to disconnect it and to supply the cable winding winch 6 with a cable.

  other means, such as the generator 36.

  These various operations being performed, it is understood that, by controlling the winding of the cable 6 on the drum of his winch, and as far as the sling 12 is slightly

  relaxed, the barrel 4 can be tilted about the pivot axis

  Naturally, the sling 12 makes it possible to control this tilting and to adjust its amplitude. The crane can in this way be put in the configuration of FIG. 3. It will be noted that the amplitude of the tilting, represented on FIG. Figure 3, has been voluntarily significantly increased with respect to the amplitude of the tilting

  real, to better illustrate the process adopted.

  In the configuration of Figure 3, it is possible either to have access to the normally hidden face of the slewing ring 8, or to proceed to the removal of this slewing ring 8, by ripping it to, and until on the special support

  depositing 14, for example by means of a traction device.

  This removal was thus made possible only by means of the crane itself, without there being any need for recourse to auxiliary handling means, but nevertheless

  powerful to clear the slewing ring.

  It goes without saying that the installation of a new orientation ring is feasible by adopting the same process in the sense

reverse e.

  Moreover, the method can also be applied, in general, to other machines than cranes to

  fixed posts, embedded on floating platforms.

  It is particularly conceivable that a hydraulic excavator with rotating turret can be supported on the ground by means of its

work equipment.

  The turret, detached beforehand from its orientation ring, can then pivot about an axis similar to the axis 29, thus releasing said orientation ring and making it accessible. The energy source is generally placed in the turret itself, there is not always a need to resort to

an auxiliary source.

2 531690

  The invention is not limited to the embodiment shown, but covers all the variants that could be made without departing from its scope or its spirit. b

Claims (5)

CLAIMS V E N D I C A T IO N S   A machine comprising: a frame (1) resting on a support (3), a turret (4) rotatably mounted on this frame, an orientation ring (8) disposed between the turret and the b Ati for the rotational mounting of the turret and having a frame portion (18) provided with a removable fastening device (19) on the frame, a turret portion (15) provided with a   detachable fastening device (16) on the turret, and a   relative rotation device (23) between these parts b Ati and turret, and a manipulation member (6-7) mounted on the turret and adapted to evolve in a vertical plane, characterized in that the two elements (27 and 28) from a montage to   pivoting (24), interconnected by a horizontal pivot axis   30 (30) substantially perpendicular to the plane of evolution of the manipulative member, are capable of being removably attached (31), one (28) on a first piece (26-1-3) support or bi -, the other (27) on the turret (4), while said manipulation member is capable of being fixed (9) on said first piece (3).   2 Machine according to claim 1, characterized in that a special removal support (14) has a height (H) substantially equal to that of the fixing face (20 a) of the ring (8) on the   frame (1) and is arranged near the frame.   Machine according to any one of claims 1 and 2,   characterized in that this machine being a crane, whose handling member is constituted by a handling hook (7), a sling (12) of adjustable length (13) is able to connect said first piece (10) to a zone of the turret (4) opposite, with respect to the axis of rotation (4 a) of the turret, to said hook handling (7).   4 Method of removing the orientation ring from a   Apparatus according to one of Claims 1 to 3, characterized   in that the zone (9) of the first piece (3), on which the manipulating member (7) and the plane of evolution of this manipulating member, are placed in substantial mutual coincidence. (7), we fix the two elements (28-27) of the assembly to   pivoting on the first piece (3) and on the turret (4), respec-   the handling member (7) is fixed on the first piece (931), the respective fastening devices (19, 16) of the ring gear (8) are removed from the frame (1) and the turret (4). ), the relative evolution of the manipulator (7) in its plane of evolution is controlled so as to rotate the turret (4) with respect to the first piece (3) around   of the horizontal pivot axis (29).   Method according to claim 4, applied to a machine according to claim 2, characterized in that the ring (8) released from its fixing devices (19-16) is displaced by   shifting, until said special carrier (14).   Process according to any one of claims 4   and 5, applied to a machine according to claim 3, characterized in that, after fixing the hook (7) on the first piece (9), it controls the raising of this hook (7) relative to the turret (4). ), this turret (4) is thus tilted about the pivot axis (29) and this tilting is limited by regulating   (13) the length of the sling (12).