JP4713489B2 - Stabilization means for stabilizing the long shaft against vibration - Google Patents

Description

  The present invention relates to a stabilizing means for stabilizing a long shaft against vibration, and the long shaft preferably includes a rotating shaft that drives a submersible pump. The invention also relates to a method for producing such a stabilizing means.

  Storing explosive media such as gas or oil in a ship's tank is regulated by safety regulations such as the International Maritime Organization (IMO) safety regulations to minimize the risk of explosion during operation. In particular, it is currently unacceptable to deploy an electric motor in the tank to drive a pump or the like due to the risk of sparks causing an explosion. Hydraulic motors have the disadvantage that unintentional leakage contaminates the contents of the tank. The hydraulic system also requires a complex high pressure oil supply.

  A common solution for driving the pump in the tank is to place an electric motor on the top surface of the tank and attach a long shaft between the electric motor and the pump in the tank. This type of pump is known as a deep well pump. The axis of rotation can be up to 30 m long and special considerations must be given to support and stability.

In general, the axis of rotation is surrounded and supported by a long concentric support shaft. The support shaft is secured to the parallel gas / oil pipe and / or the support tube surrounding both the support shaft and the gas / oil pipe by intermediate support means such as a pipe holder or clamp. The support shaft can also be fixed to the tank wall. Since the vibration is induced by the rotating shaft, it is necessary to fix the support shaft. The movement of the fluid known as sloshing can also produce a force that forces the shaft to lock.
US 5017104 discloses a ballast for a vertical drive pump in which the bearing is supported on the drive shaft approximately halfway between the pump and the motor. Ballast bearings prevent drive shaft warpage which can cause considerable wear on the pump packing and cause leakage. In order to install this ballast, the connection between the pump and the motor must be removed, and in some cases the motor must be removed without sufficient margin. The bearing of this invention is then slid on the drive shaft as close as possible to the middle of the pump and motor. The arms must be stretched and fastened to determine where to drill holes in the legs of the frame to accommodate the bolts that secure the ends of all four arms.
US 2002/08576 is improved for intermediate bearings in rotational contact with the shaft surface, allowing the bearing and housing to substantially track the contact surface of the propulsion shaft when the propulsion shaft undergoes elastic deflection during operation. A flexible support is disclosed. The flexible support employs a flexible disk pack consisting of a plurality of thin flexible disk elements in a stacked arrangement. The disk pack is attached to the support ring and is also attached to the bearing housing so that when the propulsion shaft is deflected, the bearing housing and other bearing elements can flex in alignment with the axis of the propulsion shaft.

  One way to secure the intermediate support means to the support shaft is to weld together. However, this method is very inflexible when the system needs to be reinstalled for service or repair. Second, because of the chemically aggressive environment, parts are usually made of stainless steel, which is a material that is difficult to weld.

  Another way to secure the intermediate support means to the support shaft is to use a flange of the support shaft. The support shaft generally consists of relatively small tube parts joined by a flange. The flange may further include means for securing the intermediate support means. This solution limits the available range of fixed positions of the intermediate support means on the flange and complicates the design of the system.

Providing a means for solving the above problems associated with securing the support shaft by providing a stabilizing means for stabilizing the long support shaft against vibrations and a method for manufacturing the stabilizing means; It is an object of the present invention.
Furthermore, it is a further object to provide a stabilizing means for stabilizing the long shaft against vibration with flexibility for easy mounting and remounting for repair and maintenance.
It is a further object that the stabilizing means can be rapidly manufactured with relatively few manufacturing steps.

The above and other objects are achieved in the first aspect of the present invention by a stabilizing means for stabilizing the long shaft in vibration.
This stabilizing means is
At least two plate parts, which, when combined, fit at least substantially annularly around the long shaft and substantially fix the long shaft to at least one stabilizing member And at least two plate components adapted to form a minimum distance between the shaft and the long shaft;
Adjusting means for adjusting the minimum distance between the at least two plate parts and the long shaft,
At least two plate parts form a main plane, and when the stabilizing means is attached to the long shaft, the longitudinal direction of the long shaft extends substantially perpendicular to the main plane; and
The adjusting means is adapted to take at least two positions, the first position substantially fixing the stabilizing means in the longitudinal direction of the long shaft and the second position in which the stabilizing means slides along the longitudinal direction of the long shaft. It can be so.

  It is particularly advantageous to have a stabilizing means that can be easily moved in the longitudinal direction of the long shaft during installation and initial operation. This is because the optimum vertical position for the stabilizing means to mitigate long shaft vibrations often varies from pre-estimation. Therefore, the ability to easily move the stabilizing means increases the possibility of mitigating long shaft vibrations.

  Stabilization means can be applied not only for coastal but also for offshore and offshore use. In particular, the stabilization means can be applied for offshore and offshore use such as liquid gas tankers, chemical tankers, fuel production and storage offshore facilities (FPSO).

  The stabilizing means further includes at least one support element attached to at least one of the plate parts, the at least one support element being adapted to contact the at least two plate parts and the long shaft. Is desirable. Even if the long shaft vibrates, the support element can be considered to be in contact with the long shaft under practical operating conditions. In general, the force of the support element on the long shaft is quite large, for example an assembly force of 12 kN exists. In order to sufficiently suppress the vibration of the long shaft, the assembly force can be double the weight of the long shaft, preferably 5 times, preferably 10 times. The magnitude of the oscillating force is about half the weight of the long shaft during typical operation when the submersible pump is driven by a rotating shaft surrounded by the corresponding long shaft. Optionally, the stabilizing means can comprise dedicated active or passive damping means. Preferably, the stabilizing means further comprises a releasable tightening means such as a bolt and a corresponding nut for releasably fitting it around the long shaft to join at least two plate parts together. Includes fixture with.

  The stabilizing means includes at least one support element attached to at least one of the plate parts, the at least one support element being adapted to contact at least two plate parts and the long shaft, wherein the at least one support element is Each preferably forms a second plane, and for each of the support elements, the second plane is at least substantially perpendicular to the main plane formed by the at least two plate parts. In general, the second plane of each support element substantially includes the longitudinal axis of the long shaft for stability.

  At least one of the stabilizing members is preferably a pipe extending in a direction parallel to the longitudinal direction of the long shaft. In general, pipes are adapted to carry fluids such as gas or oil. This pipe is also known as a pressure tube. The at least two plate parts further fit at least substantially annularly around the pipe, thereby forming a minimum distance between the at least two plate parts and the pipe, and the stabilizing means is at least two more It is desirable to include adjusting means for adjusting the minimum distance between the plate part and the pipe.

  Alternatively or additionally, at least one of the stabilizing members is a pipe that at least substantially surrounds the long shaft. Thus, the surrounding pipe can include stabilizing means, at least a portion of the long shaft and at least a portion of the pressure tube, the stabilizing means connecting the surrounding pipe with the long shaft and the pressure tube. At least one of the stabilizing members can be placed inside the tank wall, and the wall preferably has a mount adapted to secure the stabilizing means.

  The stabilizing means preferably takes the form of a guide ring. The long shaft can be stabilized by a plurality of guide rings according to the vibration of the long shaft. Furthermore, one or more guide rings can be coupled together, preferably in a direction parallel to the long shaft. In such a configuration, the joined guide rings can stabilize each other. Thus, in the case of a single guide ring, the stabilizing means functions as a support, whereas in the case of a plurality of guide rings, the stabilizing means can function as a fixing device.

  The long shaft preferably includes a rotating shaft adapted to mechanically transmit force from the drive means to the pump submerged in the tank. The long shaft can support the rotating shaft by having bearings at appropriate intervals along the length of the supporting shaft. Another advantage of the stabilizing means is that the long shaft can be released from the stabilizing means, thereby using the long shaft to lift the submersible pump connected to the lower end of the long shaft. Thus, for example, pump maintenance and repair is also simplified by the more flexible stabilization means of the present invention. A problem with a long shaft that includes a rotating shaft is that the temperature of the long shaft can be significantly increased over time. On the other hand, the stabilizing means may be exposed to a significant temperature rise after a while during the operation of the rotating shaft. This temperature problem can be solved at least in part by designing the plate parts to absorb and / or offset the temperature rise and / or by cooling as needed.

  Since the harsh environment of the tank often requires chemically inert materials, the plate parts are stainless steel, generally AISI 316L, AISI 304, W.C. Nr. It can be made of stainless steel and / or acid resistant steel such as 1.4462 or the like. Alternatively, the plate part can be made of aluminum or an alloy containing aluminum. In particular, the plate component can be made of a material that can withstand prolonged vibrations and associated wear, such as fretting wear.

According to a second aspect of the present invention, a method is provided for producing a stabilizing means for vibrationally stabilizing a long shaft. This method
The predetermined shaft adapted to releasably fit at least two plate parts at least substantially annularly around the long shaft and substantially fix the long shaft to at least one stabilizing member; Providing at least two plate parts having a shape;
Providing an adjusting means adapted to adjust the minimum distance between the at least two plate parts and the long shaft;
Including
At least two plate parts form a main plane, and when the stabilizing means is attached to the long shaft, the longitudinal direction of the long shaft extends substantially perpendicular to the main plane; and
The adjusting means is adapted to take at least two positions, the first of the positions substantially fixing the stabilizing means in the longitudinal direction of the long shaft, and the second of the positions is the stabilizing means of the long shaft Allow sliding along the vertical direction.

  It is an advantage of the present invention that it facilitates a simple and rapid manufacturing process for stabilizing means. Since the stabilizing means are often manufactured with a relatively small number, if the method for manufacturing the stabilizing means is simple, an expensive manufacturing preparation can be avoided.

  The method further includes the steps of: a) providing at least one support element adapted to contact the at least two plate parts and the long shaft; and (b) at least one support element of the plate parts. And attaching to at least one of the two. At least two plate parts form a main plane, and each of the at least one support element forms a second plane, and attaching the support element to at least one of the plate parts comprises: Desirably, the second plane is at least substantially perpendicular to the main plane.

  The advantage of the present invention is that at least two plate parts can be prepared by the laser cutting method. At least two plate parts each preferably have a thickness in the range of 2 mm to 20 mm, more preferably in the range of 4 mm to 16 mm, and even more preferably in the range of 6 mm to 8 mm. . All these ranges are those that can be obtained with the current commercial laser cutting technology stage, for example with a nitrogen laser. However, in principle, there is no upper limit on the thickness of the plate parts, except for limits imposed from a handling and / or manufacturing point of view. In particular, in the case of embodiments without the above-mentioned support elements, it may be advantageous to increase the thickness of the plate part in order to increase the contact area between the plate part and the long shaft.

  This method for producing the stabilizing means is particularly advantageous in that the production can be carried out in only two steps, i.e. the above-mentioned laser cutting step and the step of bending the plate part into a predetermined shape. In this way, welding can be completely eliminated. Since the welding of stainless steel and aluminum alloys requires special care and / or special preparation, it is advantageous that there is no need for welding.

  The first and second aspects of the present invention can each be combined with other aspects. These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.

  While the invention is susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and specification and have been described in detail. However, this invention should not be construed as limited to the particular forms disclosed. The present invention is intended to include within its scope all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention as defined by the appended claims.

  FIG. 1 shows a side view of the surrounding environment of the stabilizing means during operation. An electric motor 100 disposed on the upper surface of the tank drives a submersible pump 110 disposed on the tank floor. The pipe 120 for carrying the fluid is shown substantially parallel to the long shaft 130 including the rotation axis 135 in FIG. The tank wall or other stable tank internal structure of the tank includes a mount 140 for securing the stabilizing means 200.

FIG. 2 shows a cross-sectional view taken along line AA in FIG. In this cross-sectional view, a rotating shaft 135 surrounded by the long shaft 130 is shown. Also, the wall 150 is connected to the pipe 120 and the long shaft 130 through the mount 140 and the stabilizing means 200, and how the stabilizing means 200 in a substantially horizontal plane is at least substantially around the long shaft 130 and the pipe 120. You can see how it fits.

  FIG. 3 is a more detailed view of the most preferred embodiment of the stabilizing means 200. The stabilizing means 200 includes six plates that are grouped into three pairs of identical plates: two main plates 280, two first sub-plates 291, and two second sub-plates 284. When joined by a fixture 293 clamped by bolts 294, the two main plates 280 have an outer circumference that meshes with the mount 140 shown in FIG. 2 (for clarity of the upper main plate 280 for clarity of FIG. 3). The top is not shown in the figure). The two main plates 280 include holes suitable for securing the sub-plates 291 and 284 with bolts 286. In this embodiment, the two main plates 280 exhibit mirror symmetry about the axis B. The two first sub plates 291 are fastened to the two main plates 280. Each first sub-plate 291 is attached to each main plate 280 with a bolt and a corresponding nut. The two first sub-plates 291 fit substantially annularly around the long shaft 130. The first minor plate includes four support elements 292 that are symmetrically disposed about the long shaft 130, and the support elements 292 are designed to engage and contact the long shaft 130. When the stabilizing means 200 is in a fixed position that engages with the long shaft 130, the two first sub-plates 291 come into contact with the long shaft 130 only in the vicinity of the support element 292. The support element 292 is substantially triangular and the support element 292 is substantially perpendicular to the main plane formed by the plates 280, 284 and 291. Support element 292 is described in more detail below.

  Two second sub-plates 284 fit substantially annularly around the pipe 120 and include four support elements 300 similar to the support elements 292 of the first sub-plate 291. Axis D intersects axis B at the axis of symmetry of pipe 120. When rotated 180 degrees around the axis of symmetry of the pipe 120, the two second sub-plates 284 can be repositioned relative to each other. That is, it has a rotationally symmetrical shape around the symmetry axis of the pipe 120. The two second sub-plates 284 have two sets of adjusting means, each nut and a corresponding bolt 283, which is connected to the second sub-plate 284 mating in a manner described in more detail below. It is attached. When bolt 283 is tightened, support element 300 (similar to support element 292) reduces the distance from pipe 120. At a predetermined position of the adjusting means 281 and 283, a minimum distance can be formed between the pipe 120 and the support element 300 closest to the pipe. At the limit, the minimum distance is zero and the stabilizing means 200 is fixed to the pipe 120. The two first sub-plates 291 likewise include two sets of adjusting means for adjusting and establishing the contact between the support element 292 and the long shaft 130.

  In an alternative embodiment, secondary plates 284 and 291 may not include support elements 292 and 300. Instead, the inner peripheral portions of the secondary plates 291 and 282 have a substantially semicircular shape with a curvature approximately equal to the radius of the long shaft 130 and the pipe 120, respectively. When the adjusting means 281, 283, and 310 are in the tightening position, the sub-plates 291 and 284 engage with the long shaft 130 and the pipe 120, respectively, along at least a part of the inner periphery thereof. In this embodiment, the thickness of the secondary plates 284 and 291 can be increased to improve the contact between the secondary plates 284 and 291 and the long shaft 130.

  FIG. 4 is a side view of the stabilizing means 200 showing how the plates 280, 284 and 291 are interconnected. It can be seen that the plates 280, 284 and 291 form a main plane that is substantially perpendicular to the long shaft 130 and the pipe 120. In addition, the first sub plate 291 and the second sub plate 284 are arranged on the main plane so that the adjusting means 281, 283 and 310 engage with the corresponding plates so that the first sub plate 291 and the second sub plate 284 have a substantially flat cross section when viewed from the side. It can also be seen that it has a portion bent substantially perpendicular to it. In the leftmost and rightmost attachments 293, bolts 294 and nuts 295 for joining the two main plates are shown. In addition, one of the bolts 286 for joining the secondary plate 284 and the main plate 280 is shown in the cut out portion behind the pipe 120.

  FIG. 5 shows a top view of the main plate 280 of the stabilizing means 200 including a hole 530 adapted to join the main plate 280 with another corresponding main plate 280 as shown in FIG. The figure also shows a hole 520 for mounting a first sub-plate (not shown) and a hole 510 for mounting a second sub-plate (not shown). . The main plate 280 also includes additional holes 540 provided to reduce material consumption without compromising the strength and stability of the stabilizing means 200. Furthermore, the holes 540 facilitate the cleaning of the tank by an automatic tank cleaner.

  FIG. 6 shows various views of the second sub-plate 284, namely a top view and side views B and C, respectively, where B and C have viewing angles that are orthogonal to each other. The second subplate 284 includes a hole 610 for joining the second subplate 284 to the main plate 280 with suitable fastening means such as bolts and nuts or the like. Accordingly, the bolt 286 shown in FIG. 3 can penetrate the holes 510 and 610 shown in FIG. 5 to join the two plates. In addition, the second secondary plate 284 includes a receiving section 620 for mounting a support element, indicated by reference numeral 292 in FIGS. The support element 292 can be designed so that it does not require dedicated clamping means during operation after insertion into the receiving section 620. The second sub-plate 284 includes a first portion 284b, which is the adjusting means (not shown) when the second sub-plate 284 is assembled as part of the stabilizing means 200. Including four protrusions for fixing. In addition, the second sub-plate 284 includes two holes 284c that function as receiving holes for bolts (not shown) of the adjusting means. As can be seen in particular from FIGS. 6B and C, the second sub-plate 284 includes a curved portion 284 a that is substantially perpendicular to the remainder of the second sub-plate 284. Curved portion 284a includes holes for receiving adjusting means 281 and 283 and protruding portion 284d when assembled as part of the stabilizing means, as can be seen from FIG. 6C. The first sub-plate 291 has a design similar to that shown in FIG. 6, but the first sub-plate 291 is combined with the corresponding other sub-plate 291 at least substantially around the long shaft 130. It is designed to fit in a ring.

  FIG. 7 shows a partial top view of the adjusting means 281 and 283 of the present invention when two second sub-plates 284 are abutted as shown in FIG. The bolt 283 is put into the hole 283c of the first portion 284b of the second sub plate 284. The protrusion 284d is also placed in the corresponding hole of the curved portion 284a. The nut 281 is not engaged with the bolt 283. It is an advantage of the present invention that the receiving hole 284c can be dimensioned so that the bolt 283 does not fall out of the second secondary plate 284 even if the corresponding nut 281 is not engaged with the bolt 283. This is done by manufacturing a hole 284c that is substantially equal in size to the bolt 283 such that after the bolt 283 is pushed into the hole 284c, the bolt remains there during replacement and maintenance of the stabilizer 200. Is desirable.

  FIG. 8 shows a support element 292 of the present invention. The support element 292 is A-shaped and has an open section 855 at the top of the head for mating with the secondary plate 280. Considering certain manufacturing process tolerances, the distance 820 is preferably slightly larger than the distance 810 to allow the secondary plate to fit. When assembled, because of the small distance 850 of about 0.5 mm, the portion 830 of the support element 292 contacts the pipe (not shown) before the central portion 840. As the pressure tension on the operating portion 830 increases, the support element 292 (manufactured of a relatively soft material such as stainless steel) bends slightly upward, reducing the distance 810 and increasing the pressure tension. 292 further presses a secondary plate (not shown) located at 855. Thus, the support element 292 does not require any particular clamping means, since the above design inherently provides a clamping effect during operation. The above remarks regarding support element 292 apply equally to a similar description of support element 300 shown in FIG.

  FIG. 9 shows a side view of the stabilizing means according to an alternative embodiment. In this embodiment, the stabilizing means 700 includes two plate parts 600 that fit substantially annularly around the long shaft 130. The stabilizing means 700 is mechanically connected to a stabilizing member (not shown) such as a wall, a pipe parallel to the long shaft 130, for example. A support element 292 similar to the previous embodiment is attached to the plate part 600 to bring the long shaft 130 and the plate part 600 into contact. Since the support element 292 is designed to self-clamp during operation, it does not require any particular clamping means, resulting in a relatively simple design that is quick and cost effective to manufacture and install. The two plate components 600 are joined by adjusting means, that is, bolts 601 and nuts 603 attached through the curved portion of the plate components 600. This is also the same as in the previous embodiment. See FIGS. 3 and 4 and corresponding description. In FIG. 9, a mounting base 140 and a wall 150 similar to those in FIGS. 1 and 2 are shown by dotted lines.

  FIG. 10 shows a more detailed view of the stabilizing means 700. It can be seen that the two plate components 600 have a rotationally symmetric shape about the center of the long shaft 130. The center coincides with the center of the rotation axis 135 as shown in FIG. Accordingly, the two plate components 600 can be the same, resulting in a simplified manufacturing process. The two plate components 600 are joined by adjusting means, ie, 601 and 603. In FIG. 10, the support element 292 is relative to the long shaft 130 and the plate 600 such that there is little or no direct contact between the plate component 600 and the long shaft 130 as shown by the small gap in the figure. It can be seen that they are arranged. Accordingly, when the adjusting means is loosened, the stabilizing means 700 can be easily moved in the longitudinal direction of the long shaft 130. The plate component 600 includes a stabilizing means 700 and a hole 540 for facilitating cleaning of the environment in which the stabilizing means 700 is located. Each of the plates 600 has two notches or openings to provide a passage for one or more auxiliary pipes 800 in the contact interface of the stabilizing means 700 and the mount 140 (not shown in FIG. 10). Indent 620 is included. The auxiliary pipe 800 has a longitudinal length substantially parallel to the long shaft 130, and the pipe 800 is a coolant, lubricant, control for the underlying pump 110 (not shown in FIG. 10). Wires can be stored.

Fig. 4 shows a side view of the surrounding environment of the stabilizing means during operation. FIG. 2 shows a cross-sectional view taken along line AA in FIG. A more detailed view of the stabilizing means is shown. A side view of the stabilizing means is shown. The main plate parts of the stabilizing means are shown. Fig. 6 shows various views of the secondary plate parts. Fig. 3 shows a partial top view of the adjusting means of the present invention. 1 shows a support element of the present invention. Fig. 4 shows a side view of a stabilizing means according to an alternative embodiment. Fig. 5 shows a more detailed view of the stabilizing means according to an alternative embodiment.

Claims (13)

Stabilization means (200) for vibrationally stabilizing the long shaft (130),
A stabilizing member (120) to which the long shaft (130) is coupled and extending parallel to the longitudinal direction of the long shaft (130);
A first sub-plate (291) disposed annularly around the long shaft (130); a second sub-plate (284) disposed annularly around the stabilizing member (120);
Adjustment means (281, 283, 310) for adjusting the distances between the first sub plate (291) and the second sub plate (284) and the long shaft (130) and the stabilizing member (120), respectively. When,
Comprising
By connecting the first sub plate (291) and the second sub plate (284) to each other, the long shaft (130) and the stabilizing member (120) are coupled,
When the stabilizing member (120 ) of the stabilizing means (200) is coupled to the long shaft (130), the extending direction of the long shaft (130) is determined by the first sub plate (291) and the second sub plate of the stabilizing means (200) . Plate (284), perpendicular to
The stabilizing member (120) is a pipe (120);
The adjusting means (281, 283, 310) includes a first position capable of fixing the first sub plate (291) and the second sub plate (284) to the long shaft (130) and the stabilizing member (120), respectively, It is possible to take at least two positions: a second position where the first sub-plate (291) and the second sub-plate (284) are movable with respect to the long shaft (130) and the stabilizing member (120), respectively. ,
Stabilizing means (200) characterized in that.   Stabilization means (200) according to claim 1, characterized in that it comprises a main plate (280) for connecting the first sub-plate (291) and the second sub-plate (284) to each other.   The first sub-plate (291), the second sub-plate (284), or the main plate (280) is composed of two plates joined together, respectively. A stabilizing means (200) according to any one of the above.   4. The method according to claim 1, wherein at least one of the first sub-plate (291) and the second sub-plate (284) is formed of stainless steel, aluminum, or an alloy containing aluminum. A stabilizing means (200) according to any one of the preceding claims. Further, the first sub-plate (291) and the second sub-plate (284) are respectively mounted so as to be arranged around the long shaft (130) and the stabilizing member (120), and the long shaft (130) is adjusted by adjusting means. And supporting elements (292, 300), which are respectively brought into contact with the stabilizing member (120),
5. Stabilizing means (200) according to any one of claims 1-4.   6. Stabilization means (200) according to claim 5, characterized in that the support elements (292, 300) extend in a direction parallel to the longitudinal direction of the long shaft (130).   The main plate (200) is fixed to a mount (140) fixed to an internal structure of a tank in which a long shaft (130) and a stabilizing member (120) are installed. Stabilizing means (200) according to any one of the above.   Stabilization means (200) according to any one of the preceding claims, characterized in that the pipe (120) is adapted to carry a fluid.   The long shaft (130) surrounds a rotating shaft (135) adapted to mechanically transmit force from the drive means (100) to the pump (110). The stabilizing means (200) according to paragraph. A method for producing stabilizing means (200) for vibrationally stabilizing the long shaft (130),
Providing a stabilizing member (120) to which the long shaft (130) is coupled and extending in parallel to the longitudinal direction of the long shaft (130);
Providing a first sub-plate (291) annularly arranged around the long shaft (130) and a second sub-plate (284) annularly arranged around the stabilizing member (120);
Providing a connecting means for connecting the first sub-plate (291) and the second sub-plate (284);
Adjustment means (281, 283, 310) for adjusting the distances between the first sub plate (291) and the second sub plate (284) and the long shaft (130) and the stabilizing member (120), respectively. A step of preparing,
Including
By connecting the first sub plate (291) and the second sub plate (284) to each other, the long shaft (130) and the stabilizing member (120) are coupled,
When the stabilizing member (120 ) of the stabilizing means (200) is coupled to the long shaft (130), the extending direction of the long shaft (130) is determined by the first sub plate (291) and the second sub plate of the stabilizing means (200) . Plate (284), perpendicular to
The stabilizing member (120) is a pipe (120);
The adjusting means (281, 283, 310) includes a first position capable of fixing the first sub plate (291) and the second sub plate (284) to the long shaft (130) and the stabilizing member (120), respectively, It is possible to take at least two positions: a second position where the first sub-plate (291) and the second sub-plate (284) are movable with respect to the long shaft (130) and the stabilizing member (120), respectively. ,
To
A method characterized by that.   11. The method according to claim 10, comprising the step of providing a main plate (280) for interconnecting the first sub-plate (291) and the second sub-plate (284). Further, the first sub-plate (291) and the second sub-plate (284) are respectively mounted so as to be arranged around the long shaft (130) and the stabilizing member (120), and the long shaft (130) is adjusted by adjusting means. Providing support elements (292, 300) that are respectively brought into contact with the stabilizing member (120);
The method according to claim 10 or 11, characterized in that: 12. Method according to claim 10 or 11, characterized in that the step of preparing the first sub-plate (291) and the second sub-plate (284) does not comprise welding.

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