CN101444921B

CN101444921B - Underwater rope saw cutting machine

Info

Publication number: CN101444921B
Application number: CN2008102098314A
Authority: CN
Inventors: 王立权; 张波; 王刚; 张岚
Original assignee: Harbin Engineering University
Current assignee: Harbin Engineering University
Priority date: 2008-12-30
Filing date: 2008-12-30
Publication date: 2010-12-01
Anticipated expiration: 2028-12-30
Also published as: CN101444921A

Abstract

The invention provides an underwater rope saw cutting machine which comprises a feeding mechanism, a clamping mechanism arranged at the lower part of the feeding mechanism, and a cutting mechanism arranged on the feeding mechanism. Compared with various rope saw cutting machines in the prior art, the rope saw cutting machine of the invention has the most remarkable advantages that the underwater rope saw cutting machine utilizes the triangularly fixed feeding mechanism, thus enhancing working stability, measuring a tensioning mechanism of resultant force and changing buoyancy under the water by a pontoon, cutting away a damaged submarine pipeline in a manner of speed changing, being adapted to the requirements of various pipelines and causing the rope saw cutting machine to be more universal and operable; meanwhile, due to the adoption of a tensioning device of a force sensor, the tensioning force can be adjusted, no tensioning insufficiency or over-tensioning happens, and the safety is also ensured.

Description

A kind of underwater rope saw cutting machine

(1) technical field

The present invention relates to a kind of equipment of cutting operation under water, the pipeline of filling especially at major diameter such as the damaged oil and gas pipes in seabed or multiple material, the discarded jacket of ocean platform carries out the underwater rope saw cutting machine of cutting operation.

(2) background technology

The submarine pipeline reparation be one with high content of technology, relate to that specialty is wide, constructing operation is complicated, need the multiplex (MUX) to plant the highly specialized personnel, drop into ocean engineering high and that have a big risk, repair process should be taked rational method for maintaining and indispensable maintenance of equipment, repairs according to the maintenance process process.

China can carry out the maintenance activity of shallow water area submarine pipeline at present starting late aspect submarine pipeline maintenance technique and the equipment research and development.In order to ensure the safety in production of China's coastal waters offshore oil and gas field, in order to realize relying on domestic technique and equipment that submarine pipeline is realized repairing fast, forming submarine pipeline maintenance technique and isolated plant with autonomous property right is the active demand of China's offshore oil career development.Thereby this invention has certain theory and wider engineering application value.

Shortcoming based on existing rope saw cutting machine: on the feeding mode speed can not regulate, the feed mechanism discontinuity, the underwater operation degree of depth is limited, tensioning apparatus lack sensor measurement as ensure, problem such as not easy to operate under water, we have proposed a kind of novel rope saw cutting machine architecture.It can be used as the developing direction of our following rope saw cutting machine, will keep in repair the convenience of bringing very, stronger safety guarantee for submarine pipeline.

(3) summary of the invention

The object of the present invention is to provide a kind of reliability and stability height, security and highly versatile, and the diver moves a kind of underwater rope saw cutting machine simple, simple to operate.

The object of the present invention is achieved like this:

It comprises feed mechanism, is installed in the clamping device of feed mechanism bottom, is installed in the cutting mechanism on the feed mechanism; The composition of described feed mechanism comprises fixed support, hydraulic motor, speed changer, Screw of Worm Gear lift are installed on the fixed support, and hydraulic motor is connected with speed changer, and speed changer is connected with the Screw of Worm Gear lift, the Screw of Worm Gear lift matches with leading screw, and leading screw is installed in the fixed support; Described cutting mechanism comprises gantry frame, distribution triangular in shape is installed in directive wheel, driving wheel and the regulating wheel on the gantry frame, be connected the diamond saw rope between directive wheel, driving wheel and the regulating wheel, driving wheel links to each other with gear motor, and gantry frame is provided with guide rod and nut; Described clamping device comprises V-block, be installed in two hydraulic cylinder pedestals on the V-block, a hydraulic cylinder is installed on each hydraulic cylinder pedestal, the cylinder bar and the connecting rod of hydraulic cylinder are hinged, the connecting rod middle part is hinged by jointed shaft and V-block, the clamping cushion block is installed in the lower end of connecting rod, has the gantry frame fairlead on the V-block; Guide rod on the gantry frame of cutting mechanism is installed in the gantry frame fairlead; Nut on the gantry frame of cutting mechanism is installed on the leading screw.

The present invention can also comprise:

1, fixed support and V-block are provided with floating drum.

2, described regulating wheel is provided with tensioning apparatus.

Tensioning apparatus and power sensor structurally are one, and tensioning apparatus adopts screw-nut body.Among machine tensioning apparatus position such as Fig. 14,4 of overall structure and layout drawing 5.The setting angle of tensioning apparatus is consistent with saw rope resultant direction, guarantees the certainty of measurement of sensor.Tensioning apparatus will be sawed the rope tensioning by screw-nut body, and tensile force on frame structure, is realized the tensioning force measurement by the power sensor passes.

The present invention is the novel rope saw cutting machine architecture that existing actuation techniques of basis and operation principle combination constitute from the structural shortcoming of other rope saw cutting machines, and it mainly comprises feed mechanism, cutting mechanism, strainer three parts.

Mainly comprising of machine basic machine: feed mechanism, strainer, floating drum, clamping device, adopt 3 fixing methods when wherein feed mechanism is worked, comprise the power sensor in the strainer, its advantage is that to solve the dynamometry direction from mechanism be the steel wire rope resultant direction, increase stability and security, also made things convenient for the processing of measurement data; Floating drum can be regulated the size of buoyancy with the method for crossing water filling and draining, and its advantage is can allow the diver be convenient to use rope saw cutting machine under water operate.

Rope saw cutting machine of the present invention is compared with the various rope saw cutting machines of present existence, the difference of its maximum is exactly to have utilized the fixing feed mechanism of triangle to strengthen the stability of work, can measure the strainer of making a concerted effort, can change the floating drum of buoyancy under water, can adopt gear shift mode to excise damaged submarine pipeline, the demand that can adapt to various pipelines, it is stronger universal that rope saw cutting machine is had, operability, simultaneously, owing to adopted the tensioning apparatus of power sensor, can regulate tensile force, can not appear as the situation of tensioning and over-tension, its security also is guaranteed.

Rope saw cutting machine structure of the present invention has following advantage: high reliability, high stability, high safety, highly versatile, and the diver moves simple, simple to operate.It can be applied in various submarine pipelines, following rope saw cutting machine continue development and and field such as submarine pipeline maintenance all have very strong practical value, have broad application prospects.

(4) description of drawings

Fig. 1 is a general structure schematic diagram of the present invention;

Fig. 2 is the rearview of Fig. 1;

Fig. 3 is the structural representation of feed mechanism;

Fig. 4 is the right view of Fig. 3;

Fig. 5 is the cutting mechanism structural representation;

Fig. 6 is the rearview of Fig. 5;

Fig. 7 is the clamp mechanism structural representation;

Fig. 8 is clamp mechanism structural representation (not comprising V-block).

(5) specific embodiment

For example the present invention is done description in more detail below in conjunction with accompanying drawing:

In conjunction with Fig. 1 and Fig. 2,1 is feed arrangement in the composition of underwater rope saw cutting machine, and 2 is cutting mechanism, and 3 is floating drum, and 4 is tensioning apparatus, and 5 is clamping device.During its work, at first carry out tensioning by 4 pairs of Buddha's warrior attendant ropes of tensioning apparatus, clamp submarine pipeline by clamping device 5 subsequently, at this moment drive cutting mechanism 2 and move downward until complete pipeline of cutting with crossing feed arrangement 1, wherein floating drum 3 can be opened valve and intakes and carry out buoyancy adjustment with crossing.

In conjunction with 3 and Fig. 4,6 is that hydraulic motor, 7 is fixed support for leading screw, 10 for Screw of Worm Gear lift, 9 for speed changer, 8 in the composition of feed arrangement.During its work, hydraulic motor 6 rotations output to speed changer 7 and arrive Screw of Worm Gear lift 8 again, and it will rotatablely move and be converted into rectilinear motion up and down, the feed motion when driving cutting mechanism 2 realization cutting operations.

In conjunction with Fig. 5 and Fig. 6,11 is that directive wheel, 12 is that gantry frame, 13 is that diamond saw rope, 14 is that driving wheel, 15 is that gear motor, 16 is regulating wheel in the composition of cutting mechanism.During its work, drive driving wheel 14 by CD-ROM drive motor 15, thus the triangular motion that Buddha's warrior attendant rope 13 is surrounded at directive wheel 11, driving wheel 14, regulating wheel 16, and gantry frame 12 carries out cutting movement under the drive of feed arrangement 1.The modes of emplacement of tensioning apparatus 4 as shown in Figure 3.

In order to reduce diver's manipulation strength, reduce the weight in the rope saw cutting machine entry, the floating drum 3 of design, rope saw cutting machine when work in order to satisfy the needs of diver's rope saw in place, fixedly the effect of floating drum makes the centre of buoyancy of main frame move to the top of main frame center of gravity, plays the effect of automatic aligning.

In conjunction with Fig. 7 and Fig. 8,17 is that gantry frame fairlead, 18 is that V-block, 19 is that hydraulic cylinder pedestal, 20 is that hydraulic cylinder, 21 is that jointed shaft, 22 is that connecting rod, 23 is the clamping cushion block in the composition of clamping device.The process of clamping pipe at first is fixed on V-block 18 on the pipeline by the diver, then with crossing two hydraulic cylinders 20 at one end by under the fixing situation of hydraulic cylinder pedestal 19, other end drivening rod 22 is around jointed shaft 21 motions, last grip block 23 contact pipelines, and it is held tightly, at this moment pipeline is finished clamping process under the effect of V-block 18 and clamping cushion block 23.

Rope saw cutting machine structure applications of the present invention has the following advantages: 1, for different submarine pipelines, can regulate with the speed of mistake and cut its highly versatile. 2, cutting mechanism is different from existing rope saw cutting machine with crossing the triangle positioning cutting, and this structural configuration has increased the security of rope saw cutting machine, stability. 3, introduce spar structures so that rope saw cutting machine can make things convenient for the diver to move under water, increased the operability of rope saw cutting machine. 4, the arrangement of tensioning apparatus and existing rope saw cutting machine tensioning apparatus are relatively, its ergometry is the resultant direction of rope saw, control to tensile force is simpler, and improved stability, and can guarantee the convenience that bead string rope is installed and removed, the advantage of this tensioning apparatus is simple and practical, and tensioning is safe and reliable, can finish the tensioning process aboard ship.

Claims

1. underwater rope saw cutting machine, it comprises feed mechanism, is installed in the clamping device of feed mechanism bottom, is installed in the cutting mechanism on the feed mechanism; It is characterized in that: the composition of described feed mechanism comprises fixed support, hydraulic motor, speed changer, Screw of Worm Gear lift are installed on the fixed support, hydraulic motor is connected with speed changer, speed changer is connected with the Screw of Worm Gear lift, the Screw of Worm Gear lift matches with leading screw, and leading screw is installed in the fixed support; Described cutting mechanism comprises gantry frame, distribution triangular in shape is installed in directive wheel, driving wheel and the regulating wheel on the gantry frame, be connected the diamond saw rope between directive wheel, driving wheel and the regulating wheel, driving wheel links to each other with gear motor, and gantry frame is provided with guide rod and nut; Described clamping device comprises V-block, be installed in two hydraulic cylinder pedestals on the V-block, a hydraulic cylinder is installed on each hydraulic cylinder pedestal, the cylinder bar and the connecting rod of hydraulic cylinder are hinged, the connecting rod middle part is hinged by jointed shaft and V-block, the clamping cushion block is installed in the lower end of connecting rod, has the gantry frame fairlead on the V-block; Guide rod on the gantry frame of cutting mechanism is installed in the gantry frame fairlead; Nut on the gantry frame of cutting mechanism is installed on the leading screw; Fixed support and V-block are provided with floating drum; Described regulating wheel is provided with tensioning apparatus, and tensioning apparatus is a screw-nut body.