CN202612841U

CN202612841U - Shackle suitable for underwater robot operation

Info

Publication number: CN202612841U
Application number: CN 201220246055
Authority: CN
Inventors: 李士涛; 朱绍华; 于长生; 李怀亮; 李鹏; 刘富鹏
Original assignee: China National Offshore Oil Corp CNOOC; Offshore Oil Engineering Co Ltd
Current assignee: China National Offshore Oil Corp CNOOC; Offshore Oil Engineering Co Ltd
Priority date: 2012-05-29
Filing date: 2012-05-29
Publication date: 2012-12-19
Anticipated expiration: 2022-05-29

Abstract

A shackle suitable for underwater robot operation comprises a U-shaped ring, wherein corresponding holes are formed on the parallel ends of the U-shaped ring, and a pin is installed in the hole of the U-shaped ring; and internal threads are formed in the hole of the U-shaped ring, the pin is in a T shape, external threads are formed on the end of the pin, and the pin is installed in the internal threaded hole of the U-shaped ring. The shackle assists an underground robot in operation during a marine pipe-laying process, the engineering cost is lowered, and the risks which are caused by the diving operation of a diver are eliminated.

Description

Be suitable for the shackle of underwater robot operation

Technical field

The utility model relates to fastening means, relates in particular to a kind of being used in the laying of pipeline under the ocean tube head to be connected to the shackle that is suitable for the underwater robot operation that earth anchor is grabbed in stop.

Background technique

Shackle (shackle) has another name called snap ring or shackle, is provisional fastening means between the two articles when carrying out the land lifting operation, often used of people.When people attempt by means of the strength of crane lifting weight, usually, adopt shackle to connect as one the rope of weight and crane, treat that lifting finishes after, untie shackle again, separate getting in touch of weight and crane.

As shown in Figure 1, existing shackle comprises: a U-loop 1, and the parallel end of U-loop 1 is provided with the hole of mutual correspondence, installs one in the hole and connects pin 2, and the end of pin 2 is oval homalocephalus 5.

Shackle also is an indispensable fastening means in the offshore oil engineering.Carry out in the process of deployment of pipeline under the ocean at pipe laying barge, the tube head entry of starting point and the pipe abandon of end all relate to shackle.

The laying of pipeline under the ocean fractures for preventing pipeline more than lay complicated mostly of oil transport pipeline on land, the pipeline under the ocean that is connected together by root bead from pipe laying barge up and down water must keep certain pulling force to implantation, be commonly called as and lay tension force.Yet; The starting stage of pipe laying under first pipeline under the ocean water to implantation; In order to keep pipeline under the ocean laying implantation under the tension force (extended state); Avoid down the pipeline under the ocean of water to move with ship, common way is to adopt shackle to be connected to a stop to tube head to grab on the rope of earth anchor (being commonly called as initial anchor).Specific operation process is: before the pipe laying; Throw next initial anchor at desired location; By the deck hand on the pipe laying barge at a tube head welding end socket (being provided with the otic placode that is suitable for shackle pin hole on the end socket), the rope eye splice of initial anchor is packed in the U-loop of shackle, the U-loop opening is inserted in end socket otic placode and alignment pin holes; Insert the pin and the screw thread of screwing, rope is connected one with tube head.Treat that pipe laying finishes, the hydrolysis button (unscrew the silking pin counterclockwise, extract pin from tube head otic placode hole) of starting discharging separates the contact of rope under the diver, and initial anchor line rope is retracted on the deck of pipe laying barge.

As a same reason; Pipe laying is breasted the tape; Adopt shackle the end socket of pipe end to be connected on the eye splice of special hoist (being commonly called as the A&R winch) rope of pipe-laying equipment again, substitute stretcher by releasing winch last root pipeline under the ocean on the ship is sent in the water with specific tension force.Then, by the button of starting discharging of hydrolysis under the diver, the releasing winch rope is retracted on the deck of pipe laying barge again.

Along with the center of gravity of offshore oil field development carries out the transition to time deep (Bohai Sea is to the East Sea and the South Sea) by shallow water, underwater operation also carries out the transition to the saturation diving greater than 50 meters from the operating water depth of routine less than 50 meters air dive, and the dismounting of shackle has just become complicacy.As everyone knows; Not only equipment is huge in the saturation diving of high risk industries, breathing gas is expensive; And; The diver must be through going into cabin supercharging, deliver from vault decompression, got into diving bell, sent into a series of processes such as arriving the position, operation point in the water by diving bell again by the accommodation of sealing before and after the dive, and is visible, and it is very complicated to disassemble shackle by diver's operation.

The birth and the application of underwater robot (ROV) bring technological revolution for the industry of offshore oil engineering, and people attempt to transfer to underwater robot (ROV) to many divers' work through various ways and accomplish.But; Because the workmanship of underwater robot (ROV) can not show a candle to flexibly human; Two 5 functions and 7 functional machineries are manually made clumsiness, and in most cases underwater robot (ROV) is when carrying out under water task, and must depend on engineers and technicians be the instrument of its special to engineering characteristic.That is to say that according to the task characteristics, need to be equipped with extraordinary instrument, for this reason, the technician designs the various informative instrument that is suitable for underwater robot (ROV) operation, like cutting machine, the track wrench etc. under water of underwater robot (ROV) operation.Because common shackle pin, its small-sized oval homalocephalus is inappropriate for the clamping of underwater robot (ROV) mechanism hand, and underwater robot (ROV) also can't accomplish pin unscrew the screw thread action.Under this background, promptly: designed a kind of shackle of uniqueness according to the work characteristics of underwater robot (ROV) mechanism hand.

The model utility content

The main purpose of the utility model is to overcome the above-mentioned shortcoming that existing technology exists; And a kind of shackle that is suitable for underwater robot operation is provided; It is at sea in the pipe laying process; Make things convenient for underwater robot to operate, reduced engineering cost, eliminated by the diver and carried out the risk that diving operation exists.

The purpose of the utility model is realized by following technological scheme:

A kind of shackle that is suitable for the underwater robot operation comprises: a U-loop, and the parallel end of U-loop is provided with the hole of mutual correspondence, and a pin is installed in the hole of U-loop; It is characterized in that: be provided with internal thread in the hole of U-loop, pin be shaped as T shape, the styletable of pin is provided with outside thread, pin is installed in the interior threaded hole of U-loop.

On the said pin nut is installed.

The beneficial effect of the utility model: the utility model is owing to adopt technique scheme, and it in pipe laying process, makes things convenient for underwater robot to operate at sea, has reduced engineering cost, has eliminated by the diver and has carried out the risk that diving operation exists.

Description of drawings:

Fig. 1 is the existing technology structural representation.

Fig. 2 the utility model structural representation.

Fig. 3 is the utility model one example structure schematic representation.

Main label declaration among the figure:

1-U shape ring, 2-pin, 3-cross bar, 4-nut, the oval homalocephalus of 5-.

Embodiment

Like Fig. 2-shown in Figure 3, the utility model comprises: a U-loop 1, and the parallel end of U-loop 1 is provided with the hole of mutual correspondence, and pin 2 is installed in the hole of U-loop; Pin 2 be shaped as T shape, the styletable of pin 2 is provided with outside thread, pin 2 adopts thread connecting modes to be installed in the interior threaded hole of U-loop 1.Pin 2 can directly screw in the interior threaded hole internal fixation of U-loop 1; Or behind the interior threaded hole that pin 2 is screwed in U-loop 1, nut is installed again and is fixed, nut 4 spot welding and U type ring 1 are fixed as one.

During installation, the mechanism hand of underwater robot (ROV) is clamped the cross bar 3 of T type pin 2, rotates counterclockwise wrist, unscrews screw thread, extracts pin 2, has just accomplished the work of disassembling of shackle.

The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any pro forma restriction; Every technical spirit according to the utility model all still belongs in the scope of the utility model technological scheme any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. shackle that is suitable for the underwater robot operation comprises: a U-loop, and the parallel end of U-loop is provided with the hole of mutual correspondence, and a pin is installed in the hole of U-loop; It is characterized in that: be provided with internal thread in the hole of U-loop, pin be shaped as T shape, the styletable of pin is provided with outside thread, pin is installed in the interior threaded hole of U-loop.

2. the shackle that is suitable for the underwater robot operation according to claim 1 is characterized in that: on the said pin nut is installed.