JPS5917407A - Device for sending out and pulling in long material - Google Patents

Abstract

PURPOSE:To greatly reduce the number of elements and make a machine compact, by providing a pair of groups of rolls so that they pinch a long material and by driving one of the groups of rollers while controlling their torque and by using hydraulic cylinders to move the other group of rollers. CONSTITUTION:A pair of groups R1, R2 of rolls for pinch-conveying a long material P are provided so that the axes of the rolls extend on parallel planes. One group R1 of rolls are rotatably supported at both ends and are rotated by a rotatory drive means 1 equipped with a torque control mechanism. The other group R2 of rolls are rotatably supported at both ends and can be moved toward the group R1 of rolls by hydraulic cylinders 2. The group R2 of rolls are led toward the other group R1 of rolls by the guides 3a of a reaction force receiving frame 3 which receives a reaction force operating on the rolls R2 in the direction of their juxtaposition. According to this constitution, the number of elements is greatly reduced and the height of a machine is made very small.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a roll-clamping type elongated material feeding and drawing device that can control the transfer and is used for transferring and laying submarine pipes and transferring pipe steel materials. Regarding.

Prior art and its problems A large machine called a so-called "tensioner" is used to lay submarine pipes. First, we will explain the laying of submarine pipes.
Large-diameter steel pipes with a diameter of 1 tn or 2 rn, each with a length of 1.5 m and 2.5 m in diameter and lined with conocrete on the outside, are extended into the sea and are fed out into the sea. Blind plates are welded to prevent immersion.
Furthermore, a metal fitting is welded to the tip, a wire is tied to it, the submarine pipe is pulled offshore by a float crane or a ship, and the submarine pipe is fed out to a specified length on the sea from a work boat, etc., and then the submarine pipe is added and the submarine pipe is fed out again in a specified manner to the sea. It is something that can be done. In order to smoothly unwind the submarine pipe, a table roll is installed below the submarine pipe so that the unwinding side is low, and gravity is used to unwind the submarine pipe. However, a simple table roll device for unwinding submarine pipes cannot achieve the purpose. That is, it is necessary not only to pay out the submarine pipe, but also to pay out the submarine pipe to a fixed length and then stop it, and for this reason, a tensioner is used. In addition, the rear end of the submarine pipe is tied with a wire, and a huge winch is used to prevent the submarine pipe from being pulled out suddenly.To stop the submarine pipe from being rolled out, a huge pipe brake device is required along with a tensioner. Furthermore, the submarine tube must be paid out while adding a transfer side iIJlI so that the submarine tube does not move by itself to prevent damage to the submarine tube, and this is a function that must be provided in the tensioner. Currently, the only tensioner available is a caterpillar type made in foreign countries. Such a tensioner is made by connecting two type or slightly bent gear caterpillar blocks in an endless manner, and winding the caterpillars around the wheels, which are placed above and below the ground. It can be raised and lowered freely, and has a structure in which the drive wheels of the lower caterpillar are connected to a rotary drive means with a torque 'At control mechanism, and the submarine pipe is sandwiched between the upper and lower caterpillars and transported at a predetermined speed.

When the submarine tube itself is under self-propelled thrust, the submarine tube is moved by the caterpillar below, and when the submarine tube itself has self-propelled thrust, the submarine tube is moved by gravity or traction. / When a self-propelled thrust that can be sent out to sea faster than the transfer speed of the Jonar acts, the self-propelled thrust is transmitted to the caterpillar and is transmitted as a negative 9 load to the rotary drive means that drives the gear caterpillar, h If the load is below the provisional value, the rotary drive means continues to rotate and the caterpillar is about to pay out the submarine pipe. If the load exceeds a predetermined value, the hydraulic cylinder operates variably and the caterpillar above -, the submarine pipe is strongly held down by the upper and lower caterpillars, and the submarine pipe is strongly clamped and transported, and while applying a predetermined torque braking to the submarine pipe, the submarine pipe is continuously carried out at a predetermined speed, and then the submarine pipe is transported again at a predetermined speed. When the load falls below a predetermined value, the hydraulic cylinder returns to its original position and releases the upper caterpillar-type submarine pipe. Furthermore, the tensioner can also be used as a pipe brake depending on the control of the rotational drive means. For example, when a self-propelled thrust that exceeds a predetermined value is applied to the submarine pipe itself, this is detected and the rotation driving means is stopped and the upper caterpillar is pressed strongly against the submarine pipe by the hydraulic cylinder. Just set it. Furthermore, the tensioner can also be used as a pipe brake under special conditions. In other words, during a typhoon, a large self-propelled thrust is applied to the submarine tube, and if the submarine tube is clamped by a tensioner, it will cause damage to the submarine tube, so the rear end of the submarine tube is closed with a blind plate and the submarine tube is clamped by a tensioner. When a self-propelled thrust that exceeds a predetermined value is applied to a subsea pipe, the hydraulic cylinder detects this and loosens the ten caterpillars, allowing the subsea pipe to extend out to sea, thereby avoiding destruction of the subsea pipe. There is also a way to use the tensioner that allows it to be removed.

However, since the Stainjonner mentioned above has a structure in which the submarine pipe is held between the upper and lower caterpillars, the height and length of the machine are large, and those for submarine pipes with a diameter of 1 m to 2 m are huge, making it difficult to install on-site. ＼ cannot be transported and must be assembled on-site.

■ Because it uses a gear tabular, it has a large number of parts and a complex structure, requiring time and effort to manufacture and assemble, making the manufacturing cost extremely high.

■ If the self-propelled thrust of the submarine pipe is large, in order to keep the zero surface pressure between the submarine pipe and the caterpillar below the allowable value, the caterpillar type will be lengthened and the hydraulic pressure will move the upper caterpillar downward.
Although it is necessary to increase the output of the rotary drive means connected to the drive wheels that drive the cylinder and the lower caterpillar type, there is a limit to how large the rotary drive means can be.

■ Difficult to maintain.

There is a drawback.

(II) Object of the Invention The present invention has been devised in view of a series of points, and is a device for feeding and drawing long materials that can eliminate the drawbacks of the conventional method by using a roller clamping type instead of the conventional caterpillar clamping type. It provides:

The long J12 old sending and retracting device of the present invention is
At least four rollers are installed in a two-tiered planar arrangement, and all rollers in the lower group of rollers are driven to move the roller table, and all rollers in the soil roller group are synchronized to move the lower rollers. It has a structure that moves in one direction and holds long materials. It can be used not only for transferring and laying 1σ bottom pipes, but also for a wide range of uses as a transfer and braking device for long materials.

(111) "-" Compositional Description of the Invention Firstly, the structure of the elongated material feeding and drawing device of the present invention will be described as a steel yonner for use in laying submarine pipes.
This will be explained in Figs.
,・The roll axes of each roll group are arranged parallel to each other in a plane, and one roll group R, ,
R, . At the same time, the hydraulic cylinder 2 moves the one roll group R, , R, .
. . is a structure in which a reaction force receiver that receives a reaction force applied to each roll in the roll arrangement direction is guided in the direction of one of the roll groups R, , R, . . . by the frame 3 (7) guide portion 3aK. It is.

To be more specific, the base frame F has a pair of opposite reaction force receiver frames 3, 3, and upper and lower roll groups R, , R, . . . 1 R 2 1 R 2 1 . . . are disposed between them. There are n. The rolls Rr and U R2 of each roll group are metal rolls having a cushioning member with high frictional resistance, for example, a tire 4 made of urethane rubber, on the circumferential surface. The lower roll group R+ l RI +... is the respective both end shaft portions 5
, 5 are supported by the frames 3, 3 via bearings 6, 6, and a power transmission mechanism, for example, a gear transmission mechanism 7 as shown in the figure, is provided at one shaft end on the same side of each roll R1. When the connection is broken, the rotation drive means 1 having a torque control mechanism is connected to the power transmission mechanism 7. The rotation and driving means 1
For example, a hydraulic motor with a torque control 'a1 mechanism, a combination of a motor and a torque control device, etc. are employed.

The upper roll group R21R2+, which has been cut, has shaft parts 8, 8 at both ends thereof, which are rotatable relative to the roll body 9, and reaction force receivers on the shaft parts 8, 8 are connected to the guide part of the frame 3. Sliding block 1 (1, 10 are fixed,
Furthermore, the reaction force receiver is connected and supported by the other end of the hydraulic cylinders 2, 2, which are attached to the frame 3.

Next, the operation of the Sten/Jonner constructed as described in 1/c will be explained. The tensioner is installed so that the feeding side is lower. The first submarine pipe P is moved by the upper and lower roll groups R,,
When passing between R,,...+ R2+ R2+..., the upper roll group R,, R2 is raised by extending the hydraulic pressure 7 cylinders 2, 2.... Then, when the lower roll groups R+, R1, are rotated by the rotary drive means 7 and the submarine pipe P is passed over the roll groups R,, R,..., the hydraulic cylinders 2°2,... are reduced. By doing so, the upper roll group R2+R2, . . . is lowered to clamp the submarine pipe P and apply the brake. Next, submarine pipe P
After adding the next submarine pipe to the rear end, the upper roll group R21
Raise R21... by just one step to loosen the grip on the submarine pipe P and rotate it, then drive the drive means 7 to move the lower roll groups R,, R,...
Rotate the , extend the tip of the submarine pipe P to a specified length, apply the brake again, and add force to the submarine pipe. In this way, after the submarine pipe P is stretched out by repeating the addition and drawing out of the submarine pipe P, the tip of the submarine pipe P is pulled out with a float crane or a crane installed on a ship. If self-propelled thrust is generated in the submarine tube while the submarine tube is being paid out, the payout load of the stainless steel tube will be small, and if the self-propelled thrust is large, the load will become negative and thick. Then, since the unwinding speed of the tensioner is constant, if the self-propelled thrust of the submarine tube becomes too large, there is a danger that the dσ bottom tube P will slip on the tensioner, so the rotary drive means 1 is operated at a predetermined negative load torque (direct At this time, the hydraulic cylinder/dar-2゜2... operates variably and the upper roll group R,
,,R2...lower the curve and firmly hold submarine pipe 1]. Therefore, the submarine pipe P has a roll group R,, R,... music + R2 +
R2+・The lower roll is controlled to a predetermined negative load torque by a rotary drive means with a torque control mechanism without slipping on the target. +Y: IC, 1°C1.・・・・・・Continue to pay out at a constant speed. When the rotating and driving means 2 is stopped, the 1/j' stencilor also serves as a pipe brake. Inner bottom that sinks into the sea when the sea surface is rough during typhoons! If a huge self-propelled thrust acts on the IF l) and the rear end of the submarine tube is restrained by the stainless steel/yaw, there is a risk that the submarine tube will be damaged. A beautiful I whose tubes are all unusable.
In order to avoid this, the torque braking for the roll group RIIRII below the rotary drive means 1 is reduced by freeing the torque control mechanism provided in the rotary drive means 1. A group of rollers R, , R, .
Make sure that the rotation is free. This is achieved, for example, by incorporating a clutch.

(1) Modifications of the invention Modifications included in the invention will be explained with reference to FIGS. 1 to 3.

■ When rollers R and R2 are used for transporting or laying submarine pipes whose outer tops are lined with concrete 1, it is necessary to have tires 4 made of urethane rubber or the like to reduce the surface pressure with the submarine pipe P. This is necessary to keep the temperature low and avoid damage to the lining of the concrete IJ, but it is necessary when used for transferring other pipes or shaped steel.

■ The upper roll R2 has a bearing between the roll body 9 and the shaft 8, but the bearing is abolished, the roll body 9 and the shaft 8 are integrated, and a bearing is placed between the shaft 8 and the sliding block 10. A bearing may be interposed, and the hydraulic cylinder 2 is connected to the shaft 8 of the roll R2.
It may be rotatably coupled to or coupled to the sliding block 10.

■ Hydraulic cylinder 2 is said to be a ventral type, but it has a roll R.
If it is used in conjunction with a spring that returns 2 to the top, a single-body type may be used.

(2) The upper roll R2 may be installed on the fixed side so as to be rotatable and movable in the direction of the lower roll R1, and the sliding block 10 is not a component.

■ When used as a stainless steel roller or as a conveying device, rolls R1 and R2 are arranged one above the other, and a long member is placed on the lower roll group. When used as a device for inserting pipes or taking out pipes from pits, a pair of roll groups R,...
R.

. . , R, , R1, . . . are arranged in the vertical direction, and the pipes are vertically clamped and transferred.

(2) Power transmission (sometimes 7 may be eliminated, and the rotating portion it;!+ means 1 may be directly connected to each of the lower rolls R1, and all rotating drive means may be driven at the same time.

■ Lower roll group R,,R,,・Tupper)o-roll group R
, , R, , . . . may be arranged in a staggered manner when viewed from the outside in the axial direction.

(2) A total of two hydraulic cylinders 2 are provided on both sides for every upper roll R2, but two hydraulic cylinders 2 may be provided on both sides for every two or three rolls (-i).

■ When the device of the present invention is used as a stainless steel yonner that also serves as a pipe brake (in this case, when a thrust of more than a predetermined value is generated in the submarine pipe P during a typhoon, it is necessary to have a structure in which the lower one call R rotates freely. However, for this purpose, a hydraulic or electromagnetic control clutch is built into the rotary drive means 1 or provided between the roll R1 and the rotary drive means 1.

It is preferable that the O-rotation driving means 1 be capable of variable torque control, and for this reason, it should include a torque converter, and it is preferable that it be capable of minute rotation control and adjust the transfer speed.

(V) Effects As explained above, the elongated material feeding and retracting device of the present invention includes a pair of one coil group so as to sandwich the elongated material, and drives one roll group under torque control. At the same time, the roll group on the other side is moved by a hydraulic roller to sandwich the long material.
Compared to the conventional caterpillar set tensioner, it has the following effects:

■ The number of parts is significantly reduced, which greatly reduces the height of the machine. The total weight is small, making transportation easier. ■ The weight of each go is small and the assembly is simple Since the number of hydraulic cylinders can be determined as appropriate, it is easy to design according to the diameter of the submarine pipe and the thrust generated in the submarine pipe.

■ Since the number of parts is significantly reduced and the structure is simple, manufacturing and assembly are easy, and manufacturing costs can be significantly reduced.

■・The upper limit of the output of the rotary drive means can be easily increased.

■ Maintenance and inspection are easy because the number of parts is small and the structure is simple.

[Brief explanation of the drawing]

The drawings show an embodiment in which the elongated threat sending and retracting device of the present invention is embodied as a tensioner, and the first
The figure is an old side view, FIG. 2 is a sectional view taken in the same direction as the front view, and the third factor is a sectional view taken along line III-1fl in FIG. R,,R,...roll, P...submarine pipe, 1...
...Rotation 1 drive means with torque itt control, 2-...hydraulic cylinder, 3.3. Reaction force receiver is frame, 3a, 3a...guiding section. Patent applicant R Kogyo Co., Ltd.

Claims (1)

[Claims] It has a pair of rolls that transport the long material between them,
Each roll group is arranged in a planar position where the roll axes are parallel to each other, and one roll group is rotatably supported at both ends and rotated by a rotation drive means having a torque control mechanism, The other roll group is rotatably supported at both ends and is movable in the direction of the one roll group by a hydraulic cylinder. A device for feeding and pulling in a long material, characterized in that the receiver is guided in the direction of the one roll group by a guide portion of the frame.