Method for assembling compressor, and bundle guide device

A method for assembling a compressor comprises: a bundle arrangement step in which a bundle is arranged behind the opening of a casing in the insertion direction; a first insertion step in which the front end of the bundle is inserted into the casing by moving the bundle by means of both an outside traveling device and an intermediate traveling device; and a second insertion step in which the intermediate traveling device is removed from the bundle and the bundle is inserted further inward into the casing by moving the bundle by means of both an inside traveling device and the outside traveling device.

TECHNICAL FIELD

The present invention relates to a method for assembling a compressor that guides a bundle into a casing, and a bundle guide device.

BACKGROUND ART

A vertically split compressor that inserts and removes a bundle which has a columnar shape and accommodates a rotor, a blade, and the like into and from a casing which has a tubular shape in an axial direction is known.

In the vertically split compressor, the inner peripheral surface of the casing or the like may be scratched when the inner peripheral surface of the casing comes into contact with the outer peripheral surface of the bundle during the insertion of the bundle into the casing. In a case where the inner peripheral surface of the casing is scratched, the problem that the airtightness of the bundle compressor is reduced arises.

A bundle guide device provided with a pair of left and right inside traveling devices that are arranged in a front portion of the bundle in the insertion direction, a truck that is arranged in a rear portion of the bundle in the insertion direction and is capable of height adjustment, and relative angle detection means for detecting the relative angular difference between the bundle and the casing has been proposed (for example, refer to PTL 1).

With this bundle guide device, it is possible to insert the bundle into the casing while frequently correcting the inclination angle of the bundle so that the relative angular difference between the axis of the bundle and the axis of the casing becomes a predetermined angular difference.

A through hole such as a suction nozzle is formed in a lower portion of the outer peripheral wall of the casing of the compressor described above. In some cases, this through-hole is arranged on the traveling line of an inside roller in the vicinity of an opening. Accordingly, the inside roller may be fitted into the through-hole formed in the lower portion of the outer peripheral wall and the bundle cannot be smoothly inserted in some cases when the inside roller is used immediately after the insertion of the front end of the bundle into the opening of the casing.

A method for inserting the bundle into the casing in a state where the center-of-gravity position of the bundle is lifted by a wire or the like until, for example, the inside roller crosses the through-hole in the casing in the axial direction is conceivable in order to prevent the inside roller from being fitted into the through-hole. In this case, the bundle can be smoothly inserted into the casing by using the inside roller and an outside roller on a side forward in the insertion direction from the position of the through-hole in the axial direction while preventing the inside roller from being fitted into the through-hole.

CITATION LIST

Patent Literature

SUMMARY OF INVENTION

Technical Problem

In the method for assembling a compressor described above, however, the insertion into the casing needs to be performed in a state where the inside roller of the bundle is allowed to float from the inner peripheral surface of the casing, and thus a large crane apparatus that is capable of sufficiently supporting the bundle needs to be prepared. In a case where the bundle is lifted by the crane apparatus, alignment between the front end of the bundle and the opening of the casing in the insertion direction cannot be easily performed and an operator's skill is required for the alignment, and thus a long period of time is required for the operation.

An object of the present invention is to provide a method for assembling a compressor and a bundle guide device with which a bundle can be smoothly inserted into a casing even without an operator's skill and the length of time that is required for an operation for inserting the bundle into the casing can be shortened.

Solution to Problem

The following configuration is adopted to solve the problems described above.

According to a first aspect of the present invention, there is provided a method for assembling a compressor including a bundle having a rotor therein, a casing into which the bundle is inserted, and an inside traveling device supporting the front end of the bundle in the direction of the insertion into the casing and capable of traveling in the insertion direction on the inner peripheral surface of the casing, and an outside traveling device supporting the rear end of the bundle in the insertion direction and capable of traveling in the insertion direction on a base surface disposed outside the casing and an intermediate traveling device supporting the intermediate portion of the bundle between the inside traveling device and the outside traveling device in the insertion direction and capable of traveling on the base surface being removable from the compressor. The first aspect includes a bundle arrangement step in which the bundle is arranged behind an opening of the casing in the insertion direction and a first insertion step in which the front end of the bundle is inserted into the casing by moving the bundle by means of both the outside traveling device and the intermediate traveling device. The first step further includes a second insertion step in which the intermediate traveling device is removed from the bundle and the bundle is inserted further inward into the casing by moving the bundle by means of both the inside traveling device and the outside traveling device.

In the method for assembling a compressor according to a second aspect of the present invention corresponding to the method for assembling a compressor according to the first aspect described above, a center-of-gravity position moving step, in which the center-of-gravity position of the bundle in the insertion direction is moved to the rear end side, may be further provided between the bundle arrangement step and the first insertion step.

In the method for assembling a compressor according to a third aspect of the present invention corresponding to the method for assembling a compressor according to the second aspect described above, the center-of-gravity position may be moved to the rear end side in the center-of-gravity position moving step by attaching a counterweight to the outside traveling device.

According to a fourth aspect of the present invention, there is provided a bundle guide device for a compressor including a bundle having a rotor therein and a casing into which the bundle is inserted, the casing having a through-hole in a peripheral wall portion thereof, the bundle guide device including an inside traveling device supporting the front end of the bundle in the direction of the insertion into the casing and capable of traveling in the insertion direction on the inner peripheral surface of the casing. The bundle guide device further includes an outside traveling device supporting the rear end of the bundle in the insertion direction and capable of traveling in the insertion direction on a base surface disposed outside the casing and an intermediate traveling device supporting the intermediate portion of the bundle between the inside traveling device and the outside traveling device in the insertion direction and rolling on the base surface. The distance between the intermediate traveling device and the inside traveling device in the insertion direction is longer than the distance from an opening of the casing to the front edge of the through-hole in the insertion direction.

In the bundle guide device a fifth aspect of the present invention corresponding to the bundle guide device according to the fourth aspect described above, the intermediate roller and the outside roller may have a height adjusting mechanism adjusting the height of the bundle.

Advantageous Effects of Invention

According to the method for assembling a compressor and the bundle guide device according to the above-described aspects of the present invention, the bundle can be smoothly inserted into the casing even without an operator's skill and the length of time that is required for the operation for inserting the bundle into the casing can be shortened.

DESCRIPTION OF EMBODIMENTS

Hereinafter, a method for assembling a compressor and a bundle guide device according to an embodiment of the present invention will be described.

FIG. 1illustrates schematic configurations of the compressor and the bundle guide device according to this embodiment.

A compressor1, which is a so-called vertically split compressor, is provided with a bundle2and a casing3.

A rotor4and a stationary portion C that rotatably supports the rotor4are provided in the bundle2. The bundle2is formed to have a columnar shape, more specifically, a circular columnar shape, about the axis O1of the rotor4. The bundle2is provided with a positioning protrusion6that protrudes forward in the insertion direction from the front end5. The positioning protrusion6is formed into an annular shape, reduced in diameter compared to a main body section7of the bundle2. InFIG. 1, the insertion direction of the bundle2is indicated by an arrow.

The casing3is a member into which the bundle2is inserted. The casing3is provided with an outer peripheral wall (peripheral wall portion)8that has a tubular shape and a bottom wall10that extends radially inward in the insertion direction from the front end9of the outer peripheral wall8. A circular hole portion11is formed, about the axis O2of the casing3, in the central portion of the bottom wall10. The hole portion11is formed to be slightly larger in diameter than the positioning protrusion6described above and the positioning protrusion6can be fitted thereinto. The inner peripheral surface12of the casing3and the outer peripheral surface13of the bundle2are slightly tapered (not illustrated) toward the front in the insertion direction. The diameter of the inner peripheral surface12of the casing3is slightly larger (for example, less than 1 mm) than the diameter of the outer peripheral surface13, which faces the inner peripheral surface12, of the bundle2in a state where the insertion into the casing3is completed.

The casing3is fixed onto a stand14for the direction of the axis O2thereof to be the horizontal direction. The casing3is provided with an opening15, for the insertion and removal of the bundle2, on the side opposite to the bottom wall10in the direction of the axis O2. In addition, a suction nozzle16and a discharge nozzle17are provided under the outer peripheral wall8of the casing3in a state where the casing3is fixed to the stand14. Each of the suction nozzle16and the discharge nozzle17is formed into a tubular shape, increasing in diameter downward. The suction nozzle16is arranged on the opening15side in the direction of the axis O2compared to the discharge nozzle17. The suction nozzle16and the discharge nozzle17are provided with respective through-holes18and19penetrating the outer peripheral wall8.

As illustrated inFIGS. 1 and 2, the bundle guide device according to this embodiment is provided with a pair of rail members21, a pair of receiving bases22, a cylinder rail23, and a cylinder24.

The pair of rail members21are members that form a track for the insertion of the bundle2into the casing3outside the casing3. These rail members21are laid on the stand14along a line extending from the axis O2of the casing3. In addition, the rail members21are laid to extend in a direction away from the opening15of the casing3. The upper surfaces (base surfaces)25of the rail members21are horizontal surfaces. These rail members21extend in parallel to each other at a distance that is substantially equal to the diameter of the bundle2.

The receiving bases22are members where the bundle is temporarily placed before the insertion into the casing3. A plurality of the (for example, two) receiving bases22are disposed, in a state of being separated in the direction of the axis O1of the bundle2, on the stand14inside the track of the pair of rail members21. These receiving bases22have inclined surfaces26, which face the outer peripheral surface13of the bundle2, in respective upper portions. These inclined surfaces26are inclined downward toward the width-direction center of the track formed by the rail members21.

The cylinder24is a device for pressing the bundle to the casing3side. The cylinder24uses fluid pressure such as hydraulic pressure so that an inner rod27(refer toFIG. 1) is stretchable.

The cylinder rail23is a rail for supporting the cylinder24. The cylinder rail23is laid along the rail members21on the stand14inside the track of the rail members21. Fixing units (not illustrated) that are capable of removably supporting the cylinder24are provided at a plurality of longitudinal-direction locations of the cylinder rail23. Since the cylinder rail23is provided with the plurality of fixing units as described above, the cylinder24can be moved in the longitudinal direction of the rail members21in accordance with the position of the bundle2during the insertion. In other words, the bundle2can be pressed toward the casing3and then accommodated, even in a case where the distance of the movement of the bundle2exceeds the stroke amount of the inner rod27, by pressing the bundle2while gradually moving the position of the cylinder24to the casing3side.

In addition, the bundle guide device according to this embodiment is provided with a pair of inside traveling devices30, a pair of outside traveling devices31, and a pair of intermediate traveling devices32.

The inside traveling devices30are provided with inside rollers34that support the front end5of the bundle2in the insertion direction and are capable of rolling on the inner peripheral surface12of the casing3in the insertion direction of the bundle2. The inside rollers34, which are cylindrical roller members, are rotatably supported by a bearing section (not illustrated) that is disposed at a lower edge of the front end5of the bundle2. Each of the inside rollers34is attached to slightly protrude radially outside from the outer peripheral surface13of the front end5of the bundle2. Each of the pair of inside rollers34is arranged, separated in the circumferential direction, in the lower half portion of the bundle2. In addition, viewed in the direction of the axis O1, the pair of inside rollers34are arranged at positions symmetrical to each other with the meridian of the bundle2being the axis of symmetry. Since the inside traveling devices30are disposed in this manner, the bundle2can be pushed into the bottom wall10side of the casing3without the front end5of the bundle2interfering with the inner peripheral surface12of the casing3. Likewise, the front end5can be moved to the opening15of the casing3without the front end5of the bundle2interfering with the inner peripheral surface12of the casing3when the bundle2is drawn out of the casing3for maintenance or the like.

The pair of outside traveling devices31are devices that support the rear end35of the bundle2in the insertion direction to be capable of traveling. The outside traveling devices31are provided with outside rollers36and rear leg members37.

The outside rollers36are roller members that are capable of rolling on the upper surfaces25of the rail members21, which are disposed outside the casing3, in the insertion direction of the bundle2.

The rear leg members37, which are removable from the rear end35of the bundle2, rotatably support the outside rollers36. The rear leg members37are provided with rear extending portions38, horizontal extending portions39, rear jack portions40, rear roller support units41, and rear leveling adjustment mechanism sections42.

The rear extending portions38are formed to extend rearward in the insertion direction of the bundle2. Flanged portions44that can be fixed to the rear end35of the bundle2are provided at the front ends43of the rear extending portions38. The flanged portions44are removably fastened to the rear end35of the bundle2by using bolts or the like.

The horizontal extending portions39are formed to extend in the horizontal direction from the backs of the rear extending portions38to positions vertically upward from the rail members21.

The rear jack portions40are, for example, hydraulic jacks that are capable of lifting the rear end of the bundle2. The rear jack portions40are arranged between the respective outer ends45of the horizontal extending portions39and the respective rear roller support units41.

The rear roller support units41are frames that pivotally support the outside rollers36, and the rear leveling adjustment mechanism sections42are attached to the outer surfaces46thereof.

The rear leveling adjustment mechanism sections42are mechanisms that adjust the horizontal-direction position of the rear end35of the bundle2by adjusting the horizontal-direction positions of the outside traveling devices31. The rear leveling adjustment mechanism sections42are provided with arm members47and position adjusting bolts48.

The arm members47, which are supported by the outer surfaces46of the rear roller support units41, are formed into an L shape to go around outside the track of the rail members21. The arm members47have screw holes50at positions facing the outer surfaces49of the rail members21.

The position adjusting bolts48are members that press the respective outer surfaces49of the rail members21from the outside of the track toward the inside of the track. The position adjusting bolts48, which are screwed into the screw holes50from the outside of the track, are capable of pressing the outer surfaces49of the rail members21from both outer sides of the track in accordance with the amount of screwing into the screw holes50.

The rear leveling adjustment mechanism sections42allows the amount of screwing of the respective position adjusting bolts48to be adjusted and any one of the outer surfaces49of the pair of rail members21to be pressed, and thus the outside traveling devices31can be moved to any one side in the left-right direction of the track by using the reaction force. As a result, the horizontal-direction position of the rear end35of the bundle2with respect to the casing3can be adjusted.

The pair of intermediate traveling devices32support the intermediate portion52of the bundle between the front end5supported by the inside traveling devices30and the rear end35supported by the outside traveling devices31in the insertion direction of the bundle2. The pair of intermediate traveling devices32are provided with intermediate rollers53and intermediate leg members54.

As is the case with the outside rollers36, the intermediate rollers53are roller members that are capable of rolling on the respective upper surfaces25of the rail members21in the longitudinal direction of the rail members21.

The intermediate leg members54, which are removable from the outer peripheral surface13of the intermediate portion52of the bundle2, rotatably support the intermediate rollers53. The intermediate leg members54are provided with attachment bracket portions55, intermediate jack portions56, intermediate roller support units57, and intermediate leveling adjustment mechanism sections58.

The attachment bracket portions55are provided with fastening portions59and extending portions60. The fastening portions59are curved along the outer peripheral surface13of the bundle2and are removable from the intermediate portion52of the bundle2by using bolts or the like. The extending portions60are formed to extend radially outward from the bundle2from the fastening portions59and are provided with attachment seats61to which the upper ends of the intermediate jack portions56are fixed.

As is the case with the rear jack portions40, the intermediate jack portions56are, for example, hydraulic jacks that are capable of lifting the intermediate portion52of the bundle2. These intermediate jack portions56are arranged between the respective attachment seats61of the attachment bracket portions55and the respective intermediate roller support units57.

As is the case with the rear leveling adjustment mechanism sections42described above, the intermediate leveling adjustment mechanism sections58are provided with arm members63that are supported by the outer surfaces62of the intermediate roller support units57and are formed to go around outside the track of the rail members21. The arm members63have screw holes65at positions facing the outer surfaces64of the rail members21. Position adjusting bolts66are screwed into the screw holes65from the outside of the track, and ends of the position adjusting bolts66protrude to the rail member21sides. In other words, as is the case with the rear leveling adjustment mechanism sections42described above, the position of the intermediate portion52of the bundle2with respect to the casing3, specifically, the position in the horizontal direction that is orthogonal to the insertion direction, can be adjusted by adjusting the amount of screwing of the respective position adjusting bolts66of the intermediate leveling adjustment mechanism sections58.

As illustrated inFIG. 1, the intermediate traveling devices32are arranged for the distance L1from the inside traveling devices30to the intermediate traveling devices32to be slightly longer than the distance L2from the end of the casing3on the opening15side to the front edge of the through-hole18in the insertion direction of the bundle2. When this arrangement is used, the bundle2can be supported by the intermediate traveling devices32and the outside traveling devices31to be capable of traveling until the inside rollers34of the inside traveling devices30cross the through-hole18in the insertion direction during the insertion of the bundle2into the casing3. In other words, a state where the front end5of the bundle2is not supported by the inside traveling devices30can be achieved even after the insertion of the inside traveling devices30into the casing3. Accordingly, hindrance to the movement of the bundle2in the insertion direction attributable to the inside rollers34being fitted into the through-hole18can be prevented in a case where the through-hole18of the suction nozzle16of the casing3described above is arranged on the traveling path of the inside rollers34.

As illustrated inFIGS. 1 and 2, the outside traveling devices31described above are provided with counterweight installation units68in upper portions of the rear extending portions38and the horizontal extending portions39. The counterweight installation units68are provided with horizontal surfaces. Counterweights69can be placed at the counterweight installation units68for the purpose of moving the center-of-gravity position G of the bundle2to the rear end35side. Herein, the center-of-gravity position G that is illustrated inFIG. 1is a center-of-gravity position prior to the attachment of the counterweight69to the outside traveling devices31.

The counterweight69described above is attached to the outside traveling devices31mainly in a case where the intermediate traveling devices32need to be arranged on the rear end35side compared to the center-of-gravity position G of the bundle2in the insertion direction. Herein, examples of the case where the intermediate traveling devices32need to be arranged on the rear end side compared to the center-of-gravity position G include a case where the distance L1from the end of the casing3on the opening15side to the front edge of the through-hole18is longer than the distance L3from the inside traveling devices30to the center-of-gravity position G in the insertion direction.

The center-of-gravity position G of the bundle2can be temporarily moved to the rear end35side since the weight of the rear end35of the bundle2can be increased by using the counterweight69. In this manner, the bundle can be supported, to be capable of traveling, by the intermediate traveling devices32and the outside traveling devices31without having to support the bundle2by using the inside traveling devices30. In this case, the center-of-gravity position G of the bundle2is moved to a space between the intermediate traveling devices32and the outside traveling devices31, and thus it is possible to prevent the bundle2from collapsing forward in the insertion direction.

The counterweight69is formed, for example, to have a length that allows the counterweight69to be placed across the counterweight installation units68of the pair of rear leg members37. Accordingly, linearity impairment such as an oblique motion of the bundle2during the insertion into the casing3due to deviation in the center-of-gravity position of the bundle2in the width direction of the track of the rail members21or the like can be prevented. Although a case where the counterweight69is placed across the counterweight installation units68of the pair of rear leg members37has been described as an example, a plurality of the counterweights may be disposed and these counterweights may be individually attached to the respective rear leg members. In this case, it is desirable that the counterweights69placed in the respective counterweight installation units68have the same weight. In addition, positions of the rear leg members37to which the counterweight69is attached are not limited to upper portions of the rear leg members37. In the case of a configuration in which the counterweight69is placed in the upper portions of the rear leg members37as described above, the center-of-gravity position G of the bundle2can be moved to the rear end35side with the installation of the counterweight69facilitated by the use of a crane apparatus or the like.

Next, the method for assembling the compressor1described above will be described with reference to the flowchart inFIG. 9andFIGS. 1 to 8.

Firstly, a bundle arrangement step is carried out (Step S01) in which the bundle2is arranged behind the opening15of the casing3in the insertion direction. In this bundle arrangement step, the bundle2is installed on the receiving bases22for the axis O1to be in the insertion direction as illustrated inFIGS. 4 and 5. In addition, each of the intermediate leg members54and the rear leg members37is attached to the bundle2in the bundle arrangement step so that the intermediate rollers53and the outside rollers36are arranged on the upper surfaces25of the rail members21.

In the bundle arrangement step, the height position of the bundle2is also raised by the rear jack portions40and the intermediate jack portions56as illustrated inFIG. 3and the height positions of the axis O1of the bundle2and the axis O2of the casing3are adjusted to match each other. As the height position of the bundle2is adjusted by using the rear jack portions40and the intermediate jack portions56as described above, the state of the bundle2is changed from a state where the bundle2is supported by the receiving bases22to a state where the bundle2is supported by the intermediate traveling devices32and the outside traveling devices31.

In the bundle arrangement step, the horizontal-direction positions of the axis O1of the bundle2and the axis O2of the casing3are also adjusted to match each other by the rear leveling adjustment mechanism sections and the intermediate leveling adjustment mechanism sections58. In addition, the cylinder24is attached to the cylinder rail23and a state where the rear end35of the bundle2can be pressed by the cylinder24is achieved in the bundle arrangement step.

Then, a center-of-gravity position moving step is performed (Step S02) in a case where the position where the bundle2is supported by the intermediate traveling devices32is on the rear end35side compared to the center-of-gravity position G in the insertion direction. More specifically, the counterweight69is lifted by the crane apparatus (not illustrated) or the like and is placed across the counterweight installation units68. This center-of-gravity position moving step may be omitted in a case where the center-of-gravity position G is arranged sufficiently on the rear end35side compared to the intermediate traveling devices32.

Next, a first insertion step is performed (Step S03) in which the outside rollers36and the intermediate rollers53are allowed to roll so that the front end5of the bundle2is inserted into the casing3. More specifically, the cylinder24is operated, the rear end35of the bundle2is pressed, and the outside rollers36and the intermediate rollers53are allowed to roll in the insertion direction, that is, the longitudinal direction of the rail members21, as illustrated inFIG. 6so that the bundle is moved to the casing3side. In a case where deviation occurs between the axis O1of the bundle2and the axis O1of the casing3during the course of this movement, the pressing of the bundle2by the cylinder24is stopped. Then, the front, back, left, and right positions of the bundle2and the insertion angle of the bundle2with respect to the casing3are adjusted by using the rear jack portions40, the intermediate jack portions56, the rear leveling adjustment mechanism sections42, the intermediate leveling adjustment mechanism sections58, and the like. Then, the insertion of the bundle2is temporarily stopped at the position available immediately after the inside rollers34of the bundle2cross the through-hole18in the insertion direction, as illustrated inFIG. 7, in the first insertion step.

Then, a second insertion step is performed in which the bundle2is completely accommodated in the casing3. More specifically, the intermediate traveling devices32are removed from the bundle2, as illustrated inFIG. 7, in the second insertion step. In other words, the height dimensions of the intermediate jack portions56are reduced and the bolts fixing the attachment bracket portions55of the intermediate leg members54are loosened so that the attachment bracket portions55are disassembled from the outer peripheral surface13of the bundle2. In this manner, the load of the bundle2is applied to the inside rollers34, and then the inside rollers34can roll on the inner peripheral surface12of the casing3. In other words, a state is achieved where the inside traveling devices30and the outside traveling devices31support the bundle2to be capable of traveling.

In a case where the through-hole18is not arranged on the traveling path of the inside rollers34herein, the second insertion step may be performed at the point in time when the inside rollers34are inserted into the casing3. In other words, the inside traveling devices30may be allowed to travel from the site on the inner peripheral surface12that is the closest to the opening15of the casing3.

Then, the arrangement of the cylinder24is shifted to the casing3side, and the rear end35of the bundle2is pressed by the cylinder24as in the first insertion step. Then, the inside rollers34and the outside rollers are allowed to roll, and the bundle2is inserted further into the casing3.

A series of the above-described steps for assembling the compressor is terminated when the pressing of the bundle2by the cylinder24is stopped at the point in time when the bundle2is completely accommodated in the casing3as illustrated inFIG. 8and the counterweight69and the outside traveling devices31are removed in order. The rail members21, the receiving bases22, and the cylinder rail23may be removed as well. The steps described above may be performed in reverse order when the bundle2is drawn out of the casing3. Accordingly, detailed description of the procedure for drawing the bundle2out of the casing3will be omitted herein.

According to the embodiment described above, the bundle2can be supported by the intermediate traveling devices32and the outside traveling devices31when the bundle2is inserted into the casing3. In addition, the inside traveling devices30allow the bundle2to travel on the inner peripheral surface12of the casing3after the front end5of the bundle2is inserted into the casing3, and thus interference between the inner peripheral surface12of the casing3and the front end5of the bundle2on the front side in the insertion direction can be reliably avoided. As a result, the bundle2can be smoothly inserted into the casing3even without an operator's skill and the length of time that is required for the operation for inserting the bundle2into the casing3can be shortened.

In a case where the through-hole18or the like of the suction nozzle16is formed on the traveling path of the inside traveling devices30, the intermediate traveling devices32and the outside traveling devices31can continue to support the bundle2until the inside traveling devices30of the bundle2cross the through-hole18of the suction nozzle16or the like. Accordingly, hindrance to the insertion of the bundle2attributable to the inside traveling devices30being fitted into the through-hole18can be prevented. On the insertion-direction side forward from the position where the inside traveling devices30cross the through-hole18, the intermediate traveling devices32can be removed and the bundle2can be supported, to be capable of traveling, by the inside traveling devices30and the outside traveling devices31.

In addition, the bundle2can be moved in the horizontal direction orthogonal to the insertion direction and the height direction by the rear jack portions40, the intermediate jack portions56, the rear leveling adjustment mechanism sections42, and the intermediate leveling adjustment mechanism sections58, and thus the adjustment of the position and the angle of the bundle2can be performed with ease.

In addition, the center-of-gravity position G of the bundle2can be moved to the rear end35side by the counterweight69in a case where the intermediate traveling devices32are attached on the rear end35side compared to the center-of-gravity position G of the bundle in the insertion direction. Accordingly, the center-of-gravity position G of the bundle2in the insertion direction can be arranged between the intermediate traveling devices32and the outside traveling devices31. As a result, the bundle2can be stably moved in the insertion direction by the intermediate traveling devices32and the outside traveling devices31without having to support the front end5side of the bundle2by using the crane apparatus or the like.

The present invention is not limited to the embodiment described above. The present invention includes various modifications of the embodiment described above insofar as the modifications do not depart from the spirit of the present invention. In other words, the specific shapes, configuration, and the like of the embodiment are merely examples that can be appropriately changed.

For example, a case where the rear end35of the bundle2is pressed from behind in the insertion direction by the use of the cylinder24has been described in the embodiment described above, but the bundle2may be pressed to the casing3side by the use of a pressing mechanism other than the cylinder24.

In addition, the shape of the bundle2is not limited to a circular columnar shape although a case where the bundle2has a circular columnar shape has been described in the embodiment described above. Likewise, the shape of the casing3is not limited to a cylindrical shape although a case where the casing3has a cylindrical shape has been described in the embodiment described above.

In addition, a case where the intermediate traveling devices32are arranged at one location between the inside traveling devices30and the outside traveling devices31in the insertion direction has been described in the embodiment described above, but the intermediate traveling devices32may be disposed at a plurality of locations.

In addition, a case where the counterweight69is removed from the counterweight installation units68at a timing immediately preceding the removal of the outside traveling devices31has been described in the embodiment described above, but the timing is not limited thereto. For example, the counterweight69may be removed at a timing when the intermediate traveling devices32are already removed. In this case, the combined mass of the objects pressed and moved by the cylinder24can be decreased. Accordingly, the amount of the energy that is consumed when the bundle2is pressed by the cylinder24can be reduced.

INDUSTRIAL APPLICABILITY

The present invention can be widely applied to vertically split compressors that are capable of inserting a bundle into a casing in an axial direction.

REFERENCE SIGNS LIST