KR101556268B1 - Method for installing canister guide apparatus - Google Patents

Abstract

A method of installing a canister type thruster is disclosed. A method of installing a canister-type thruster according to an embodiment of the present invention includes the steps of: (a) combining a canister with a propulsion head that enters a trunk of a hull and generates propulsion water by propeller rotation; And (b) securing the canister to which the propulsion head is coupled in a predetermined position in the trunk, wherein step (a) comprises, in a state in which the propulsion head is seated in a depression formed in a docking area below the trunk, To the canister.

Description

{METHOD FOR INSTALLING CANISTER GUIDE APPARATUS}

The present invention relates to a canister type thruster installation method.

Special vessels, such as drillships, must be able to berth in the working area of the sea, so a Dynamic Positioning System is needed to maintain its position even under the influence of algae, wind and digging. Therefore, these ships have a thruster that can control the position of the ship by generating propulsion force while changing direction in the water.

However, since the conventional thruster is installed in the lower part of the hull (underwater), there is a problem that it is difficult to repair or replace if a failure occurs. In the event of a breakdown at sea, it may be necessary to move the hull to the land where the dock is located for repair. A canister type thruster is proposed to solve these operational difficulties and to be able to perform repair or replacement work on the thruster in the maritime work area.

Korean Unexamined Patent Publication No. 10-2011-0139545 (published on Dec. 29, 2011) and Korean Unexamined Patent Application Publication No. 10-2010-0074397 (Disclosed on Mar. 22, 2010) each show an example of a canister type thruster. The canister type thruster includes a canister installed to raise and lower in a trunk extending from a deck to a bottom of the hull, a propulsion head installed at a lower portion of the canister and capable of switching the direction of 360 degrees, driving devices for operating the propulsion head in the canister An elevating device for elevating and lowering the canister, and a guide device for guiding the elevation of the canister.

The lift device for lifting and lowering the canister may be configured to include a rack gear provided on a side surface of the canister, and a lifting and lowering drive portion having a pinion gear engaged with the rack gear and a motor for driving the rack gear.

Such a thruster can change the position of the propelling head through lifting and lowering of the canister. It is possible to switch to an operation mode in which the propulsion head is positioned below the hull bottom, a movement mode in which the propulsion head is pulled up into the trunk when the hull is operated, and a maintenance mode in which the propulsion head is pulled up to the maintenance area inside the hull . It is also possible to use a crane or the like to raise the canister and the propelling head together and separate them from the hull.

On the other hand, the canister is a huge structure having a width of about 5 to 6 m in cross section and a height of about 10 m. Korean Patent Laid-Open Publication No. 10-2012-0003161 (published Jan. 10, 2012) discloses a method of collectively installing a heavy canister and a propelling head (thrust) on a hull trunk. The canister is typically placed in the lower space of the dock area before being installed in the trunk. At this time, the canister and the propelling head are separately stored. The installation process of the conventional canister type thruster will be briefly described. First, prior to installation of the canister, devices necessary for supporting and driving the canister, such as the elevating device and the guiding device, are installed in the trunk. Next, a locking member (also referred to as a socket) for fixing the canister to a predetermined position is provided in a state in which the canister is introduced into the trunk. Next, the canister is lifted outwardly from the inside of the trunk, and is put back into the space of the dock space. Then, the process of coupling with the propulsion head is performed. Thereafter, the canister, in which the propulsion head is coupled, is lifted up again and reintroduced into the trunk.

In this way, since the canister having a heavy weight is required to be introduced into the trunk, the trunk must be taken out of the trunk, and then re-entered into the trunk. Thus, the work process is inefficient, and time and labor, In addition, during this process, a bite of the rack gear and the pinion gear of the canister may occur, which may result in failure of the lifting drive portion.

Korean Patent Publication No. 10-2011-0139545 (published Dec. 29, 2011) Korean Patent Laid-Open No. 10-2010-0074397 (published on July 2, 2010) Korean Patent Laid-Open No. 10-2012-0003161 (published Jan. 10, 2012)

In the embodiment of the present invention, the propelling head is lifted up to the canister which has entered the inside of the trunk in a state where the propelling head is seated in a depression formed in the docking area below the hull trunk, Stator installation method.

According to an aspect of the invention, there is provided a method of manufacturing a propulsion system, the method comprising the steps of: (a) engaging a canister with a propulsion head into the trunk of a hull and generating propulsion water by propeller rotation; And (b) securing the canister to which the propulsion head is coupled in a predetermined position in the trunk, wherein the step (a) includes the step of: placing the propelling head in a depression formed in a dock area below the trunk , And lifting the propulsion head to engage the canister with the canister-type thruster installation method.

The step (b) may include the step of installing a plurality of latching members at a set position of the trunk inner surface to fix the canister to a predetermined position in the trunk according to an operation mode, a movement mode, and a maintenance mode.

The mounting position of the engaging member is determined by projecting the engaging rod to the outside of the canister at the mounting position of the engaging member to enter the groove of the engaging member so as to mount the engaging member, Can be installed.

A lift device including a pinion gear which lifts and raises the canister on both outer sides of the canister and which engages with a rack gear installed in a long length in an up and down direction and a drive source for driving the pinion gear before the step (a) Installing a guide device for guiding the rack gear on a line such as the rack gear at a predetermined position on the inner surface of the trunk.

The lifting and lowering driving unit may be fixed in an installation space formed on both sides of the inner surface of the trunk.

The guide device may be installed on the upper side and the lower side of the elevation driving part so that the distance between the uppermost guide device and the lowermost guide device is shorter than the entire length of the rack gear.

Wherein the guide device mounting step includes the steps of measuring a position where the guide device is installed and correcting an installation position of the guide device based on an error value between the installed position of the guide device and the predetermined position . ≪ / RTI >

Wherein the rack gear is provided on both outer sides of the canister in a length direction in an ascending and descending direction, the pinion gear and the teeth to be engaged with each other are made to be symmetrical, the guide device includes a support bracket fixed to the inner surface of the trunk block, And a side guide portion for guiding the raising and lowering in contact with the side surface of the rack gear, wherein the tooth guide portion and the side guide portion are arranged in a vertical direction of the rack gear A sliding pad which is in contact with the rack gear to guide the rack and pinion, and a sliding pad which is interposed between the sliding guide and the sliding pad to adjust a gap between the sliding pad and the rack gear And a thickness regulating plate, respectively.

Wherein the step of installing the guide device includes the steps of fixing the support bracket to the inner surface of the trunk block, installing the entrance guide to the front end and both sides of the support bracket, and installing at least one of the support bracket and the entrance guide Measuring a position of the thickness guiding plate; preparing a thickness regulating plate having a designed thickness based on the measured error between the installed position and the preset position; And installing the sliding pad on the entire surface of the thickness adjusting plate.

A method of installing a canister type thruster according to an embodiment of the present invention is a method in which a propelling head is lifted up and coupled to a canister that has entered a trunk in a state where the propelling head is seated in a depression formed in a docking area below a hull trunk, And efficient installation can be achieved.

In addition, by providing a guide device for guiding the rack gear so as to be disposed on the outer surface of both sides of the canister so as to be arranged on the same line as the rack gear provided in the ascending and descending direction at a predetermined position on the inner surface of the trunk, The bite between the gear and the pinion gear is made possible, and the canister can be conveniently and safely entered into the trunk. This facilitates installation compared to a conventional canister type thruster in which the guide device and the landing gear are disposed at different positions.

In addition, the installation position of the guide device can be effectively corrected by adjusting the thickness of the guide device.

1 is a cross-sectional view illustrating an inner structure of a canister type thruster according to an embodiment of the present invention and a hull mounted state thereof.
2 is a perspective view of a canister type thruster according to an embodiment of the present invention.
Figs. 3 to 5 are cross-sectional views taken along line AA of Fig. 1, showing the canister moved to the operating mode, the moving mode, and the maintenance mode, respectively.
FIG. 6 is a cross-sectional view showing a cross-sectional structure of a canister and a trunk of a canister type thruster according to an embodiment of the present invention and a configuration of a restraining device for restricting the canister.
7 is a perspective view of a lower guide unit of a canister type thruster according to an embodiment of the present invention.
8 is a front view of the lower guide unit of the canister type thruster according to the embodiment of the present invention.
FIGS. 9 to 14 illustrate the installation process of the canister type thruster of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are provided to fully convey the spirit of the present invention to a person having ordinary skill in the art to which the present invention belongs. The present invention is not limited to the embodiments shown herein but may be embodied in other forms. For the sake of clarity, the drawings are not drawn to scale, and the size of the elements may be slightly exaggerated to facilitate understanding.

1 shows an internal configuration of a canister type thruster and a hull attachment state according to the present embodiment.

The canister type thruster 100 according to the embodiment of the present invention can be applied to a ship or a floating structure that needs to maintain an anchoring state in a working area in the sea. For example, it can be applied to drillships drilling for oil and gas resources, floating production storage offloading (FPSO), and so on. The canister type thruster 100 can be applied to special ships such as a tugboat, icebreaker, and the like as well as ordinary transportation vessels in addition to the case where position control is required in an anchored state.

Referring to FIGS. 1 and 2, a ship 1 (or a floating structure) of a ship to which a canister type thruster 100 is applied has a trunk 2 penetrating in the vertical direction. The thruster 100 includes a canister 110 installed in the trunk 2 so as to be able to move up and down, a propulsion head 130 installed at a lower portion of the canister 110, a lifting device 140 moving the canister 110 up and down, And a guide device for guiding the lifting and lowering of the canister 110.

 1, 2, and 6, the canister 110 may be provided in the form of a rectangular box whose bottom and side surfaces are watertight. The trunk 2 of the hull 1 may be in the form of a rectangular barrel slightly larger than the canister. As an example, the canister 110 and the trunk 2 may have a rectangular cross-sectional shape, but the cross-sectional shape of the canister 110 and the trunk 2 may be variously changed, such as hexagon, octagon, .

As shown in FIG. 1, the canister 110 can be divided into a plurality of spaces by a plurality of decks 112, 113, and 114 spaced apart from each other in the vertical direction. The lower compartment 116 between the bottom plate 111 and the first deck 112 from the lower side of the canister 110, the drive device room 117 between the first deck 112 and the second deck 113, An auxiliary equipment room 118 between the second deck 113 and the third deck 114 and an upper compartment 119 between the third deck 114 and the top plate 115. In addition, a ladder 120 may be installed vertically in the canister 110 so as to move to each space.

A drive motor 121 for driving a propulsion head 130 to be described later is installed in the drive device room 117 and various control equipment and power supply equipment for controlling the operation of the thruster 100 are installed in the auxiliary equipment room 118 Can be installed. Here, as an example, the configuration of the inside of the canister 110 is presented only, and the internal configuration of the canister 110 is not limited to this form. The inside of the canister 110 can be variously changed according to the design.

1 to 3, the propulsion head 130 includes a propeller 131, a streamlined propeller support 132 for supporting the propeller 131, and a propeller support 132 extending upwardly from the propeller support 132, And a cylindrical shroud 135 provided around the propeller 131 for guiding the propulsion water is provided in the vertical support portion 133. The vertical support portion 133 includes a vertical support portion 133 rotatably supported by the bottom plate 111 of the canister 110, can do.

The lower compartment 116 of the canister 110 is provided with a drive shaft 136 for transmitting the rotation of the drive motor 121 to the propeller 131 and a vertical support portion 133 and a propeller support portion 132 , Rotation shafts and gears for connecting the drive shaft 136 and the propeller 131 for power transmission are installed. Steering motors 137 may be installed in the lower compartment 116 to rotate the rotation link 134 to rotate the propulsion head 130 360 degrees.

The propelling head 130 can rotate propeller 131 by the operation of the driving motor 121 in a state where the propelling head 130 is positioned below the bottom surface of the hull 1 as shown in FIGS. In addition, the propulsion head 130 can be rotated by the operation of the steering motors 137 to control the direction of the propulsion water. The propulsion water can move the hull 1 to a desired position so that the hull 1 can maintain its position in the sea despite the influence of algae or waves. The propeller in which the propelling head 130 rotates at the bottom of the hull 1 is also referred to as an azimuth thruster.

The lifting device 140 for moving the canister 110 up and down can be installed between the outer surface of the canister 110 and the inner surface of the trunk 2, as shown in FIGS. Also, elevating devices 140 of the same type may be provided on both sides of the canister 110 so that both sides of the canister 110 can be raised and lowered on the same condition.

Each lifting and lowering device 140 includes a rack gear 141 fixed to the side surface of the canister 110 and extended in the lifting direction and two pinion gears 141 and 142 fixed to the inner surface of the trunk 2, (142), and an elevation driving unit (143) having a driving source for driving these pinion gears (142).

The rack gear 141 is elongated from the upper side to the lower side of the canister 110 as shown in FIGS. 2 and 3, has two pinion gears 142 on both sides in the width direction thereof, and teeth 141b, Are symmetrical. The present embodiment shows a configuration in which two pinion gears 142 engage with both side teeth 141b of the rack gear 141 in order to realize stable lifting and lowering, but the teeth 141b of the rack gear 141, And one pinion gear 142 may be engaged with the pinion gear. The present embodiment shows a state in which the body portion 141a of the rack gear 141 and the teeth 141b on both sides thereof are integrated with each other. However, the rack gear 141 has the body portion 141a and the teeth portion 141b They may be separately manufactured and then combined with each other. Further, since the rack gear 141 is a long and large component for realizing lifting and lowering of the canister 110, which is a huge structure, it may be divided into a plurality of elements,

As shown in Fig. 1, the lifting drive portion 143 can be installed at a position higher than the upper and lower middle portions of the trunk 2, and on both sides of the inner surface of the trunk 2 where the lifting drive portion 143 is located, And an installation space 3 for installation and maintenance of the air conditioner 143 may be provided. The drive source of the lifting drive portion 143 may include a reduction gear device capable of realizing a decelerated rotation of the two pinion gears 142 and a motor for driving the reduction gear device, As shown in FIG.

The raising and lowering device 140 can move up and down the canister 110 by raising and lowering the rack gear 141 by the operation of the raising and lowering driving part 143, The position can be changed. That is, as shown in FIG. 3, an operation mode in which the propulsion head 130 is positioned below the bottom of the hull 1 to perform position control of the hull 1, A driving mode in which the head 130 is pulled up into the trunk 2, a maintenance mode in which the propulsion head 130 is pulled up to the maintenance position on the upper part of the trunk 2 for maintenance of the propulsion head 130, Mode.

5, a maintenance space 6 for maintenance of the propulsion head 130 may be provided on the side of the trunk 2 at a height where the propulsion head 130 is located in the maintenance mode . The maintenance space 6 may be of sufficient size to separate the components of the propulsion head 130 and store them therein or to allow the operator to access the propulsion head 130 to perform maintenance, It may be located above the surface of the water.

As shown in FIGS. 3 and 6, the canister type thruster 100 includes a plurality of restraint devices 150 that can restrain the canister 110 without shaking in a state of being switched to an operation mode, a moving mode, Respectively.

The restraint apparatus 150 includes a driving unit 151 installed in the canister 110 and driven by a driving unit 151 and a driving unit 151 including a motor or a hydraulic cylinder and a latching rod 152 for projecting outside the canister 110, And a plurality of engaging members 153 which are fixed to the inner surface of the trunk 2 at a position corresponding to the restraining device 150 and have grooves which are engaged with the engaging rod 152. The plurality of latching members 153 may be provided at positions corresponding to the engagement of the latching rod 152 in a state where the canister 110 moves to the operation mode, the movement mode, and the maintenance mode.

1 and 2, the guide device for guiding the lifting and lowering of the canister 110 is provided on the inner surface of the trunk 2 on the upper side of the elevation drive portion 143 to support the rack gear 141 A lower guide unit 160 for guiding the raising and lowering of the rack gear 141 by supporting the rack gear 141 provided on the inner surface of the trunk 2 on the lower side of the elevation driving unit 143, Unit 170, as shown in FIG.

That is, in this embodiment, the upper guide unit 160 and the lower guide unit 170 are mounted on the inner surface of the trunk 2 coinciding with the ascending / descending trajectory of the rack gear 141, so that the rack gear 141 is slidably supported Thereby guiding smooth up and down of the canister 110. Herein, only the upper guide unit 160 and the lower guide unit 170 are shown as an example, but the guide apparatus is provided in the same shape as the upper or lower guide units 160 and 170 so as to be additionally installed on the elevation trajectory of the rack gear 141 As shown in Fig. These guiding devices may be provided on both sides of the trunk 2 where the lifting device 140 is located.

2, 7 and 8, the lower guiding unit 170 includes a support bracket 171 fixed to the inner surface of the trunk 2 and a guide bracket 171 provided symmetrically on both sides of the support bracket 171, Two tooth guide portions 172 that are in contact with the teeth 141b on both sides of the rack gear 141 and a side surface (flat surface on which no teeth are formed) of the rack gear 141 to guide the rack gear 141 up and down And side guide portions 173 provided on the support bracket 171 between the guide portions 172. [ The lower guiding unit 170 can support the rack gear 141 without shaking by keeping the two tooth guiding portions 172 and the side guiding portions 173 around the rack gear 141 in the form of a D shape.

The support bracket 171 constituting the skeleton of the guide portion 172 and the side guide portion 173 can be manufactured by welding a plurality of metal plates by welding and the support bracket 171 is welded And can be fixed to the inner surface of the trunk.

The guide portion 172 and the side guide portion 173 are respectively provided with sliding pads 172a and 173a which come in contact with the rack gear 141 and guide the lifting and lowering. Each of the sliding pads 172a and 173a may be detachably coupled to the inner surface of the tooth guide 172 and the side guide 173 so that the sliding pads 172a and 173a can be replaced when worn or damaged. The sliding pads 172a and 172b are provided between the entering guide portion 172c of the toothed guide portion 172 and the sliding pad 172a and between the entering guide portion 173c of the side guide portion 173 and the sliding pad 173a. One or more thickness regulating plates 172b, 173b may be interposed to adjust the gap between the rack gear 141a and the rack gear 141a.

The engagement guide portions 172c and 173c of the tooth guide portion 172 and the side guide portion 173 are inclined relative to the raising and lowering direction of the rack gear 141 so that the rack gear 141 can smoothly enter the inside thereof. And the upper and lower ends of the sliding pads 172a and 173a may be formed with inclined guide surfaces 172d and 173d that maintain the inclination with respect to the raising and lowering direction of the rack gear 141. [

The sliding pads 172a and 173a may be formed of a non-metallic material having a weaker rigidity than the rack gear 141 so as to guide smooth sliding movement while protecting the teeth 141b of the rack gear 141. [ It may preferably be a synthetic resin material having a small friction resistance and excellent abrasion resistance and impact resistance.

The upper guide unit 160 may also be provided in substantially the same form as the lower guide unit 170. However, considering that the rack gear 141 is disengaged from the upper guide unit 160 or the lower guide unit 170 when the canister 110 is lowered or raised, The directions of the entrance guiding portions 172c and 162c for guiding the entrance of the entrance guide can be reversed. 3, the upper guide unit 160 may have an entry guide portion 162c disposed at a lower portion thereof and the lower guide unit 170 may have an entry guide portion 172c disposed at an upper portion thereof.

The distance between the upper guide unit 160 and the lower guide unit 170 may be shorter than the entire length of the rack gear 141. [ 5, the raising and lowering rack gear 141 is supported by the upper guide unit 160 and the pinion gear 142 of the elevation drive unit 143, or as shown in Fig. 3, The rack gear 141 is supported by the pinion gear 142 of the lifting and driving unit 143 and at least two points of the rack gear 141 are supported.

When the canister type thruster 100 is installed in the hull 1 for the first time or is separated from the hull 1 for repairs, the canister 110 having the propulsion head 130 mounted thereon is lifted by a crane or the like The canister 110 is lowered so that the canister 110 enters the opening in the upper portion of the trunk 2. [

At this time, the rack gears 141 on both sides of the canister 110 are guided by the upper guide unit 160 and then engaged with the pinion gear 142 of the elevation driving unit 143 located below the rack guide 141, Lt; / RTI > Thereafter, the canister 110 can be introduced by the operation of the lifting drive unit 143, and the descending rack gear 141 can naturally enter the lower guide unit 170 and be stably supported.

Particularly, in this embodiment, since the upper guide unit 160 and the lower guide unit 170 are arranged on the same line as the rack gear 141 to guide the rack gear 141, the guide device and the lift device are disposed at different positions It is possible to implement an easy installation as compared with a normal canister type thruster.

If the guiding device and the landing gear are provided separately like a normal canister type thruster, precise engagement of the rack gear and the pinion gear of the lifting gear should be taken into consideration while maintaining accurate coupling of the guide device during the installation process. And it is very difficult to implement accurate installation. Large structures such as canisters are not easy to handle due to their size and weight. However, in the canister type thruster of this embodiment, the upper guide unit 160 and the lower guide unit 170 are disposed on the same line as the rack gear 141 of the elevating device 140 to guide the raising and lowering of the rack gear 141 It is possible to realize easier installation. In addition, since it is not necessary to separately install a rail for guiding the canister 110, it is possible to simplify the construction, thereby reducing manufacturing cost and increasing productivity.

On the other hand, the installation procedure (S401 to S451) of the canister type thruster will be described with reference to Figs. 9 to 14 based on the contents of Figs. 1 to 8 below. However, the duplicated contents described in FIG. 1 to FIG. 8 will be omitted.

9, a pinion gear 142 and a pinion gear 142 are driven by raising and lowering the canister 110 and engaging with a rack gear 141 provided on both sides of the canister 110 in a vertical direction A lifting device 140 including a lifting drive part 143 equipped with a driving source is installed on the inner surface of the trunk 2 (S401). The elevation driving unit 143 may be fixed to the fixing structure 4 provided inside the installation space 3 formed on both sides of the inner surface of the trunk 2. [

Next, referring to Figs. 10 to 12, a guide device for guiding the rack gear 141 so as to be placed on the same line as the rack gear 141 is set at a predetermined position on the inner surface of the trunk 2 (S411 to S431 ). The guide device includes an upper guide unit 160 and a lower guide unit 170 and may be installed on both sides of the trunk where the elevator apparatus 140 is located. The guide device is arranged so that the distance between the uppermost guide device (upper guide unit 160) installed on the inner surface of the trunk 2 and the lower guide device (lower guide unit 170) is shorter than the entire length of the rack gear 141 As shown in FIG. Hereinafter, the lower guide unit 170 will be mainly described for the sake of understanding. The guide device includes the support bracket 171 and the tooth surface guide portion 172 and the side guide portion 173 and the tooth surface guide portion 172 and the side guide portion 173 are provided on the entrance guide portion 172c and 173c, thickness control plates 172b and 173b, and sliding pads 172a and 173a, respectively.

10, first, the support bracket 171 included in the guide device is fixed by welding at a predetermined position on the inner surface of the trunk 2, and the support bracket 171 The entrance guide portions 172c and 173c are provided at the front end and both sides of the support bracket 171 (S411). The entering guide portions 172c and 173c can be mounted by a welding method, a bolt fastening method or the like. Details of the support bracket 171 and the entry guide portions 172c and 173c are shown in FIGS. 7 and 8, and therefore, they are not shown in FIG. 10 for convenience of explanation.

Then, the installation position of the guide device is measured as shown in Fig. 11 (S421). At this time, light can be irradiated to the installation position of the guide device, and position information of the guide device can be extracted based on at least one of time, distance and angle of the reflected light. For this, the position measuring device 300 may be used, and laser light, infrared light, or the like may be used. The position measuring device 300 may be installed in the installation space 3 or the maintenance space 6 or separately installed in the measuring device installation space S provided on both sides of the inner surface of the trunk 2. [ The position measuring device 300 irradiates light to the mounting position (measurement point) of the support bracket 171 and the entrance guide portions 172c and 173c of the guide device and measures the position of the guide bracket 171 based on at least one of the time, Position information (e.g., X, Y, Z coordinate values) of the guide device can be extracted. The position information of the guide device thus measured is transmitted to the network-connected monitoring system so that the operator can confirm the installation position of the guide device.

Next, referring to FIG. 12, the installation position of the guide device is corrected by adjusting the thickness of the guide device based on the error value between the measured installation position and the predetermined position of the guide device (S431). Fig. 12 is a plan view of the guide device. Please refer to Fig. 7 and Fig. 8 for a more specific form. Here, the thickness of the thickness adjusting plates 172b and 173b is adjusted on the basis of the above-described error value in the state where the supporting bracket 171 and the entering guide portions 172c and 173c of the guide device are installed to correct the installation position of the guide device The thickness control plates 172b and 173b are manufactured. Here, 'fabrication' may include processing the thickness control plates 172b and 173b by a thickness necessary for correcting the installation position of the guide device. The thickness guide plates 172b and 173b are provided on the entire surfaces of the entrance guide portions 172c and 173c and the sliding pads 172a and 173a are installed on the entire surface of the thickness guide plates 172b and 173b.

For example, in a state where the support bracket 171 of the guide device and the entrance guide portions 172c and 173c are installed, as a result of measuring the installation position of the guide device, the distance " 2 mm " When moved, the error value between the preset position and the actual installation position differs by "2 mm". The left and right thickness control plates 172b-1 and 172b-2 provided on the entrance guide 172c disposed on both sides of the initial support bracket 171 are designed to have a thickness of 5 mm, It is assumed that the thicknesses of the first and second elastic members 172a and 173a are respectively designed to be " 30 mm ".

The thickness of the left side thickness regulating plate 172b-1 is changed to " 7 mm " and the thickness of the right side thickness regulating plate 172b-2 is changed from " 3 Mm ". Then, the left and right thickness regulating plates 172b-1 and 172b-2 are manufactured with the changed thickness. 12, the manufactured left and right thickness adjusting plates 172b-1 and 172b-2 are installed on the front surface of the entering guide portion 172c and the sliding pads 172b-1 and 172b- (172a). Since the thickness regulating plate 173b provided at the entrance guide 173c disposed at the front end of the support bracket 171 does not need to be changed in thickness in this case, The installation position of the guide device can be corrected by adjusting the thickness of the left and right thickness control plates 172b-1 and 172b-2.

As another example, the tooth surface guide portion 172 and the side guide portion 173 may be constituted only by the entrance guide portions 172c and 173c and the sliding pads 172a and 173a in which the thickness adjusting plates 172b and 173b are omitted. In this case, the thicknesses of the sliding pads 172a and 173a are designed and manufactured based on the above-described error value in a state in which the entrance guide portions 172c and 173c are previously prepared in accordance with the designed numerical values and installed in the support bracket 171 . In the same way as described above, for example, when the guide device moves to the left by the distance " 2 mm ", the error value between the preset position and the actual installation position differs by 2 mm. The thickness of the left side sliding pad 172a-1 is designed to be 37 mm and the thickness of the right side thickness adjusting plate 172a-2 is set to be 37 mm when the thickness of the sliding pads 172a and 173a is designed to be & Design is changed to "33 mm". Then, the left and right sliding pads 172a-1 and 172a-2 are formed at the changed thicknesses, respectively, and installed on the front surface of the entering guide portion 172c. Thus, the installation position of the guide device can be corrected by adjusting the thickness of the left and right sliding pads 172a-1 and 172a-2. Since the sliding pad 173a provided at the entrance guide 173c disposed at the front end of the support bracket 171 does not need to be changed in thickness, it is manufactured according to the initial design values and installed at the corresponding position. The guide device installation position correcting method described above can be applied to the upper guide unit 160 as it is.

13, the canister 110 enters the trunk 2 of the hull 1 and is coupled with the propelling head 130 which generates propulsion water by rotating the propeller 131 (S441) . The rack gear 141 on both sides of the canister 110 which is introduced into the trunk 2 of the hull 1 is guided by the upper guide unit 160 and is then guided by the elevation drive unit 143 And can be stably supported while being engaged with the pinion gear 142. Thereafter, the canister 110 can be introduced by the operation of the lifting drive unit 143, and the descending rack gear 141 can naturally enter the lower guide unit 170 and be stably supported.

The canister 110 can be lowered by the lifting device 140 to the outside plate portion of the hull 1 supported by the reaming device 9 for engagement with the propulsion head 130. [ In this state, the propelling head 130 is lifted by the wire W and is coupled to the canister 110 in a state where the propelling head 130 is seated in the depression 310 formed in the docking area below the trunk 2, . The propelling head 130 may be lifted to closely contact the assembly surface of the canister 110 and may be assembled to the canister 110 by bolting or the like. At this time, a holder 320 for securely mounting and protecting the propelling head 130 may be provided inside the depression 310 formed in the dock. The wire W connected to the holder 320 can be lifted by the winch (not shown) while lifting the propelling head 130. In this embodiment, lifting the propulsion head 130 mounted on the mounting table 320 using the wire W has been described as an example. Alternatively, a hydraulic device (not shown) may be mounted on the inside of the depression 310 So that the propulsion head 130 mounted on the mount 320 can be raised by a hydraulic device (not shown). In addition, various known elevating methods can be used.

Next, the canister 110 to which the propulsion head 130 is coupled is fixed to a predetermined position in the trunk 2 according to the operation mode, the movement mode, and the maintenance mode. 14, a plurality of latching members 153 are installed at predetermined positions on the inner surface of the trunk 2 in order to fix the canister 110 to a predetermined position according to the mode (S451). The state in which the canister 110 has moved to the operating mode, the moving mode, and the maintenance mode, respectively, will be described with reference to FIGS.

The above-described latching member 153 can be installed at a predetermined position so that the latching rod 152 can be locked at the position where the canister 110 moves according to the operation mode, the movement mode, and the maintenance mode. The engaging member 153 is fixed to the inner surface of the trunk 2 by a preliminary trench at the mounting position of the engaging member 153 so that the canister 110 The setting position of the latching member 153 is accurately determined (set) by projecting the latching rod 152 outwardly into the groove of the latching member 153 so that the latching member 153 is inserted into the inner surface of the trunk 2 Can be installed (fixed). At this time, when the engaging rod 152 and the central axis X of the engaging member 153 coincide with each other, the engaging rod 152 can be correctly inserted into the groove of the engaging member 153. [ The operation of allowing the engaging member 153 to come into contact with the inner surface of the trunk 2 may be performed in the above-described step S401.

The foregoing has shown and described specific embodiments. However, it is to be understood that the present invention is not limited to the above-described embodiment, and various changes and modifications may be made without departing from the scope of the technical idea of the present invention described in the following claims It will be possible.

2: trunk, 110: canister,
130: propelling head, 131: propeller,
140: lifting device, 141: rack gear,
141c: buffer claw, 150: restraint device,
160: upper guide unit, 170: lower guide unit,
300: position measuring instrument, 310: depression.

Claims (9)

(a) engaging the canister with a propulsion head that enters the trunk of the hull and generates propulsion water by propeller rotation; And
(b) securing the canister to which the propulsion head is coupled in a predetermined position in the trunk,
Wherein the step (a) is performed by lifting the propelling head and engaging the propelling head with the canister in a state where the propelling head is seated in a depression formed in a docking area below the trunk,
Before the step (a)
Installing a lift device on the inner surface of the trunk to lift and lower the canister and including a pinion gear engaged with a rack gear installed on both outer sides of the canister in an ascending and descending direction and a driving source for driving the pinion gear, ,
Further comprising the step of installing a guide device for guiding the rack gear so as to be disposed on the same line as the rack gear at a predetermined position on the inner surface of the trunk,
Wherein the rack gear is provided on both outer sides of the canister in a length direction in an ascending and descending direction, the pinion gear and the teeth to be engaged with each other are symmetrical, the guide device includes a support bracket fixed to the inner surface of the trunk block, And a side guide portion for guiding the raising and lowering in contact with the side surface of the rack gear,
Wherein the tooth guiding portion and the side guiding portion are provided with an entering guide portion for maintaining an inclination with respect to the direction of elevation of the rack gear, a sliding pad for guiding the elevation in contact with the rack gear, And a thickness regulating plate for regulating the gap between the sliding pad and the rack gear. The method according to claim 1,
Wherein the step (b) includes the step of installing a plurality of locking members at a set position of the inner surface of the trunk to fix the canister to a predetermined position in the trunk according to an operation mode, a moving mode, and a maintenance mode, How to install the stutter. 3. The method of claim 2,
The mounting position of the engaging member is determined by projecting the engaging rod to the outside of the canister at the mounting position of the engaging member to enter the groove of the engaging member so as to mount the engaging member, In which a canister-type thruster is installed. delete The method according to claim 1,
Wherein the lifting and lowering driving unit is fixed in an installation space formed on both sides of the inner surface of the trunk. The method according to claim 1,
Wherein at least two guide devices are installed on the upper and lower sides of the elevation drive part such that a distance between the uppermost guide device and the lowest guide device is shorter than the entire length of the rack gear. delete delete The method according to claim 1,
The guide device installation step
Fixing the support bracket to the inner surface of the trunk block,
Installing the entry guide on the front end and both sides of the support bracket;
Measuring an installation position of at least one of the support bracket and the entry guide,
Producing a thickness control plate having a designed thickness based on an error value between the measured installation position and the predetermined position,
Installing the manufactured thickness control plate on the front surface of the entrance guide unit,
And installing the sliding pad on the entire surface of the thickness adjusting plate.

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