The device for mounting the supporting pillars of self-elevating floating platform

 

(57) Abstract:

The invention is intended for use in hydraulic construction, in particular relates to a device for mounting the supporting pillars in the openings Jack-up floating platforms. In the device for mounting the supporting pillars of self-elevating floating platforms case (5) is made with enclosures (6) and (7), between which is placed the anchor nut (10). In the nut (10)) is fixed with the fixing element made in the form of a screw (11) with a support surface (13) and (14) placed on either side of its threaded part (12) and cooperating with the surfaces of the holes (8) and (9) durable (6) and (7), with the surface of the hole (9) through the sleeve (18). This design of the device for fastening allows to reduce consumption and improve the reliability of its work. 4 Il.

The invention relates to the field of hydraulic engineering construction, in particular, to devices for mounting the supporting pillars in the openings Jack-up floating platforms.

A device for mounting the supporting pillars of self-elevating floating platform, comprising a housing with a cover plate, slide and wedge clamp (see Markov Y. M. and other Mobile drilling ostaetsya difficulties in its operation.

It is also known a device for mounting the supporting pillars of self-elevating floating platform containing the locking column elements movably mounted in the housing (see and.with. USSR N 636366, M CL5E 21 B 15/02 - prototype).

In the mentioned known device on the prototype of the locking elements in the form of push plates with floaters, basic and advanced driven rods, for example, by hydraulic cylinders. The housing and cover plate are provided with slots and grooves cooperating with the guide surfaces on the slide, thereby moving the slide rods is pressed against the pressure plate to the column and the last commit.

The disadvantage of the prototype is the complexity and increased the intensity of its design, resulting in a large number of metal parts (pressure plate, two forks, pull, private drive, etc. and inconvenience in operation due to clogging of the guide surfaces in the slots and grooves, when converting the vertical movement of the rod in the horizontal movement of the pressure plate.

The technical result of the invention is to simplify the design of the device and increase the convenience of her platform, containing the locking column elements movably mounted in the housing, so that the body is made with posts having aligned holes, which is placed between the anchor nut, which wound up fixing element made in the form of a screw with bearing surfaces located at both sides from its threaded part and cooperating with the surfaces of the hole racks, with one of them through the Bush.

The invention is illustrated in the drawing, where Fig 1 shows a portion of a Jack-up rig with the portal and one of the support columns; Fig. 2 is a view As in Fig. 1; Fig. 3 is a section along B-B in Fig. 2; Fig. 4 - view In Fig. 3.

The device for mounting the supporting columns 1, equipped with rails 2, self-elevating floating platform 3 with portal 4 includes a housing 5 with the racks 6 and 7, which are made in accordance with openings 8 and 9, the threaded anchor nut 10, the locking element - screw 11 with a threaded part 12, the support surfaces 13 and 14, the contact face 15, the holes 16 on the shaft 17 and the sleeve 18.

The items listed devices interact as follows.

The housing 5 of the device is welded to the portal 4 platform 3 on its roof. Between the stand is s 7 opened the locking element the screw 11, the bearing surface 13 is included in the hole 8 of the rack 6, which interacts with the surface of the hole 8.

In the 9 hole rack 7 is inserted sleeve 18, the internal bore communicating with the bearing surface 14 of the screw 11 and the outer surface with the surface of the hole 9 hours 7.

Holes 16 on the shank 17 of the screw 11 are used to turning Vita 11 in the nut 10, for example, by using a pry bar (not shown).

When attaching the supporting column 1 screws 11 are screwed into the nuts 10 to another contact face 15 in Reiki 2. Horizontal load from the column 1 is perceived by the screws 11 and nuts through 10, based on 7 hours of the casing 5, is transmitted to the portal 4 platform 3. The supporting surface 13 and 14 screws 11 are used for the perception of vertical loads from columns 1 arising during their swinging while holding the screws 11. These vertical loads from the bearing surfaces 13 and 14 are transmitted to the portal 4 through the racks 6 and 7 of the housing 5, so as surfaces 13 and 14 are in contact respectively with the surfaces of the holes 8 and 9, with the latter through the sleeve 18.

Holes 8 and 9 in the racks 6 and 7 are coaxially to ensure the collection device. I 9 - larger than the thread diameter of the screw 11, and put the sleeve 18.

Thus, in the inventive device, the number of parts is significantly reduced (main parts - screw 11, the nut 10, block 5) than the simplified design of the device. Excluded intermediate elements (sliders, pull, crackers, etc), which are available in the prototype. No additional vertical movement of the auxiliary elements, converted into horizontal movement in contact with the column plate. In the invention, only one horizontal movement of the screw 11. This increases the reliability of the device.

Reduced and the intensity of the device. For example, the prototype device used on Jack-up platform "Baki" for one column weighs 16 tons, and the device according to the invention, applied to a Jack-up rig "Arctic", weighs 3 tons

The device for mounting the supporting pillars of self-elevating floating platform containing the locking column elements movably mounted in the casing, wherein the casing is made with posts having aligned holes, which is placed between the anchor nut, which instituted the locking element in the form of a screw anchor is Erste racks, and with one of them through the Bush.

 

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