JP2017207009A - Vertical inversion jig for cabin upper half of vacuum turbine, and vertical inversion method for cabin upper half of vacuum turbine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical inversion jig for the cabin upper half of a vacuum turbine capable of improving the safety of a vertical inversion work and reducing a work space.SOLUTION: A vertical inversion jig 30 for a cabin upper half 1 of a steam turbine according to an embodiment comprises: a movable pedestal 40, on which the cabin upper half 1 is mounted, and an inversion support device 50 for holding a rear curved leg part 3 of the cabin upper half 1 to support the cabin upper half 1 to be vertically inverted. The movable pedestal 40 and the inversion support device 50 can move in a direction opposite to the inversion direction R of the cabin upper half 1.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to an upside down jig for an upper half of a steam turbine casing and an upside down method for an upper half of a steam turbine casing.

  A steam turbine is an external combustion engine that causes a steam flow accelerated by a nozzle (static blade) to flow into a moving blade and converts the energy of the steam into rotational energy of a turbine rotor by the moving blade. These nozzles and rotor blades are accommodated in a container called a passenger compartment. The vehicle compartment is composed of an internal vehicle compartment that accommodates the nozzle, the rotor blades, and the turbine rotor, and an external vehicle compartment that is provided outside the internal vehicle compartment and accommodates the internal vehicle compartment. In general, the inner compartment and the outer compartment are divided into an upper half and a lower half of the compartment, respectively. The upper half of the passenger compartment and the lower half of the passenger compartment are connected and integrated by fastening joint surfaces provided at the peripheral portions of the upper half of the passenger compartment and the lower half of the passenger compartment with bolts.

  It is required by law to periodically inspect the passenger compartment. For this reason, at the time of inspection, the bolts are removed, the upper half of the passenger compartment is removed from the lower half of the passenger compartment, and the upper half of the passenger compartment and the lower half of the passenger compartment are inspected.

  During this inspection, the upper half of the passenger compartment may be turned upside down. As a method of flipping the upper half of the passenger compartment upside down, a suspension point called a trunnion provided in the upper half of the passenger compartment is flipped while being suspended between the parent hook and the child hook of the crane (hereinafter referred to as the opposite suspension inversion method). Is noted).

  In this phase suspension reversal method, first, as shown by the broken line in FIG. 8A, the upper half 100 of the passenger compartment is placed on the rootstock 101 and the joint surface 102 faces downward. Next, a parent hook 104 is hung on a front trunnion 103 positioned in front of the upper half 100 of the passenger compartment via a sling wire 105, and a child hook 107 is hooked on a rear trunnion 106 positioned on the rear of the upper half 100 of the passenger compartment. Hang through 108. Next, the suspension wire 109 connected to the parent hook 104 and the suspension wire 110 connected to the child hook 107 are wound up to separate the upper half 100 of the passenger compartment from the rootstock 101 and to stand (see FIG. 8A). (See solid line). After the upper half 100 of the passenger compartment rises, the child hook 107 is removed from the rear trunnion 106. Next, the upper half 100 of the passenger compartment is rotated 180 ° in a substantially horizontal direction. Thereafter, as shown by a broken line in FIG. 8B, the child hook 107 is hung on the rear trunnion 106 via the sling wire 108. Next, the rear end of the upper half 100 of the passenger compartment is placed on the rootstock 112 of the rear receiving base 111 prepared in advance. Thereafter, the suspension wire 109 connected to the parent hook 104 is rolled down, and the vehicle interior upper half 100 is rotated so that the joint surface 102 faces upward with the first fulcrum 113 as the rotation fulcrum. Then, the passenger compartment upper half 100 is placed on the rootstock 115 of the front receiving base 114 so that the joint surface 102 faces upward and is substantially horizontal (see the solid line in FIG. 8B). In this way, the upper half 100 of the passenger compartment is turned upside down. In this phase suspension reversal method, in order to remove the child hook once, the parent hook has a lifting ability of 100% of the weight of the upper half of the passenger compartment, and the child hook is 50% or more of the weight of the upper half of the passenger compartment. It is preferable to have a lifting capacity of

  On the other hand, as another method, there is known a method in which a trunnion located in front of the upper half of the passenger compartment is reversed with two points suspended without using a child hook (hereinafter, two-point suspended inversion method). ). This method may be more suitable than the above-described phase suspension inversion method depending on conditions such as the lifting capacity of the crane, the shape of the upper half of the passenger compartment, or the work space. For example, if the parent hook has a lifting capacity of 100% of the weight of the upper half of the passenger compartment, but the child hook does not have a lifting capacity of 50% of the weight of the upper half of the passenger compartment, two points are required. The suspension inversion method is more suitable than the phase suspension inversion method, and it is considered that the suspension inversion method is less susceptible to crane restrictions than the phase suspension inversion method.

  In this two-point suspension inversion method, first, as shown by a two-dot chain line in FIG. 9A, the upper half 120 of the passenger compartment is placed on the rootstock 121 and the joint surface 122 faces downward. Next, the parent hook 124 is hung on the two front trunnions 123 located in front of the upper half 120 of the passenger compartment via the sling wires 125. Next, the upper half 120 of the passenger compartment is raised by winding up the suspension wire 126 connected to the parent hook 124 (see the broken line in FIG. 9A). At this time, the upper half 120 of the passenger compartment rotates with the first fulcrum 127 as a rotation fulcrum. Subsequently, the crossover pipe connecting portion 128 of the upper half 120 of the passenger compartment is placed on the rootstock 130 of the front receiving base 129 prepared in advance. Thereafter, the suspension wire 126 is wound up to further rotate the vehicle upper half 120 with the second fulcrum 131 as the rotation fulcrum, as shown by the solid line in FIG. 9A, and separate the vehicle upper half 120 from the rootstock 121. . Next, the suspension wire 126 is further wound to separate the upper half 120 of the passenger compartment from the rootstock 130 of the front receiving base 129 (so-called ground cutting). Next, as shown by the two-dot chain line in FIG. 9B, the upper half 120 of the passenger compartment is rotated 180 ° in the substantially horizontal direction, and the upper half of the passenger compartment is placed on the rootstock 133 of the rear receiving base 132 prepared in advance. Place the rear end of 120. Thereafter, the suspension wire 126 is wound down to rotate the upper half 120 of the passenger compartment with the third fulcrum 134 as a rotation fulcrum so that the joint surface 122 faces upward. Then, the upper half 120 of the passenger compartment is placed on the rootstock 130 of the front receiving base 129 so that the joint surface 122 faces upward and is substantially horizontal (see the solid line in FIG. 9B). In this way, the upper half 120 of the passenger compartment is turned upside down.

Shokai 58-127104

  However, in the case of the above-described two-point suspension reversal method, when the vehicle upper half 120 rotates with the second fulcrum 131 as the rotation fulcrum, the support point becomes one point of the rootstock 130. For this reason, when the center of gravity of the parent hook 124 does not completely coincide with the center of gravity of the upper half 120 of the passenger compartment from when the upper half 120 of the casing is started to stand up until the rootstock 130 is cut off, Even in this case, the behavior of the upper half 120 of the passenger compartment can become unstable, which can cause a safety problem. In addition, in the upside down work, there is a problem that the work space in the height direction increases because the above-described ground cutting is performed. Further, in the case of the two-point suspension inversion method, as shown in FIGS. 9A and 9B, a work space that is substantially the same as the length of the upper half 120 of the passenger compartment is used between the front receiving base 129 and the rear receiving base 132. . For this reason, there also exists a problem that the work space of a horizontal direction increases.

  The problem to be solved by the present invention is to improve the safety of the upside-down inversion work and to reduce the work space of the upper / lower inversion jig of the upper half of the casing of the steam turbine and the upper half of the casing of the steam turbine. It is to provide an upside down method.

  The upper / lower reversing jig for the upper half of the casing of the steam turbine according to the embodiment supports the upper half of the casing when the upper half of the casing of the steam turbine having the held portion is turned upside down. This is an upside down jig. The upper / lower reversing jig for the upper half of the casing of the steam turbine holds the movable cradle on which the upper half of the casing is placed and the held portion of the upper half of the casing, and the upper half of the casing is turned upside down. And a reverse support device for supporting The movable cradle and the reverse support device can move in the direction opposite to the reverse direction of the upper half of the passenger compartment.

  Moreover, the upside down method of the upper half of the casing of the steam turbine according to the embodiment is an upside down method of the upper half of the casing of the steam turbine that vertically inverts the upper half of the casing of the steam turbine having the held portion. The upper and lower inversion methods of the upper half of the casing of the steam turbine include a step of preparing a mobile cradle, a step of placing the upper half of the cab on the mobile cradle, and a step of placing on the mobile cradle. And a step of holding the held portion in the upper half of the vehicle compartment by the reversing support device. Also, the upper and lower inversion method of the upper half of the casing of the steam turbine includes a step of turning the upper half of the passenger compartment held by the inversion support device upside down while supporting the upper half of the passenger compartment by the inversion support device, and fixing the upper half of the upper and lower sides of the passenger compartment. And a step of placing on the type cradle. Further, in the method of turning the upper half of the casing of the steam turbine upside down, in the step of turning the upper half of the casing upside down, the reversing support device is moved in the direction opposite to the direction of turning the upper half of the casing.

  According to the present invention, it is possible to improve the safety of the upside down operation and reduce the work space.

FIG. 1 is a side view showing an example of an upper half of a casing of a steam turbine. FIG. 2 is an overall schematic configuration diagram showing an upside down jig in the upper half of the casing of the steam turbine according to the first embodiment of the present invention. FIG. 3 is a front view showing the mobile cradle of FIG. 4 (a) is a side view showing the reverse support device of FIG. 2, and FIG. 4 (b) is a front view of FIG. 4 (a). 5 (a) is a partial cross-sectional view showing the upper half and the lower half of the reverse support device in FIG. 4 (a), and is a partial cross-sectional view when the upper half of the passenger compartment is raised. FIG. 5B is a front view of FIG. 5A, and FIG. 5C is a cross-sectional view taken along line AA of FIG. FIG. 6A is a diagram for explaining a method of turning the upper half of the steam turbine in the upper half of the steam turbine according to the first embodiment. FIG. 6B is a diagram for explaining a method for turning the upper and lower sides of the upper half of the steam turbine according to the first embodiment upside down. FIG. 6C is a diagram for explaining the upside down method of the upper half of the casing of the steam turbine according to the first embodiment. FIG. 6D is a diagram for explaining the upside down method of the upper half of the casing of the steam turbine according to the first embodiment. FIG. 7: is a schematic block diagram which shows the position adjustment apparatus in the vertical inversion apparatus of the upper half of the compartment of the steam turbine in the 2nd Embodiment of this invention. FIG. 8A is a diagram for explaining a method of inverting the upper and lower sides of the upper half of the casing of a general steam turbine, which is a phase suspension inverting method. FIG. 8B is a diagram for explaining a top-and-bottom reversal method, which is a method for reversing the upper half of the upper half of a typical steam turbine cabin. FIG. 9A is a diagram for explaining a two-point suspension inversion method, which is a vertical inversion method for the upper half of a passenger compartment of a general steam turbine. FIG. 9B is a diagram for explaining a two-point suspension reversal method, which is a vertical reversal method of the upper half of a passenger compartment of a general steam turbine.

  Hereinafter, an upside down jig for the upper half of a casing of a steam turbine and a method of turning the upper half of a casing of a steam turbine upside down will be described with reference to the drawings.

(First embodiment)
The upside down jig of the upper half of the casing of the steam turbine and the upside down method of the upper half of the casing of the steam turbine according to the first embodiment will be described with reference to FIGS. 1 to 6D. Here, first, an example of the upper half of the casing of the steam turbine to which the upside down jig for the upper half of the upper half of the casing of the steam turbine and the upper and lower reversing method of the upper half of the casing of the steam turbine according to the present embodiment can be preferably applied. This will be described with reference to FIG.

  The upper half 1 of the steam turbine shown in FIG. 1 is paired with the lower half of the passenger compartment (not shown) and accommodates nozzles (stationary blades) and moving blades. Generally, a steam turbine has an internal casing and an external casing provided outside the internal casing. In the present embodiment, the upper half of the external compartment is simply referred to as the upper half 1 of the compartment.

  As shown in FIG. 1, the upper half 1 of the passenger compartment is composed of an upper half main body 1a, a front claw foot 2 provided at an end of the upper half main body 1a (on the left side in FIG. 1), and an upper half main body 1a. And a rear claw foot portion (held portion) 3 provided at an end portion on the rear side (right side in FIG. 1). Among these, the front claw leg 2 and the back claw leg 3 are respectively provided in the left-right direction of the upper half main body 1a (the depth direction in the drawing of FIG. 2), and project forward or rearward. Each front claw foot portion 2 and each rear claw foot portion 3 are portions that are placed on a bearing base of a turbine rotor (not shown) and support the upper half 1 of the passenger compartment.

  The upper half main body 1a is provided with a front trunnion 4 and a rear trunnion 5. Among these, the front trunnion 4 is disposed on the front claw foot 2 side, and the rear trunnion 5 is disposed on the back claw foot 3 side. The front trunnion 4 and the rear trunnion 5 are respectively provided in the left-right direction of the upper half main body 1a and protrude toward the left side or the right side. The front trunnion 4 and the rear trunnion 5 are configured such that a parent hook 10 to be described later is hung through a sling wire 11 and is configured as a suspension point for lifting the upper half 1 of the passenger compartment with a crane.

  A steam inlet pipe connecting portion 6 is provided in the upper half body 1a of the upper half 1 of the passenger compartment. A steam inlet pipe (not shown) for supplying steam from a boiler (not shown) is connected to the steam inlet pipe connecting portion 6. Further, a crossover pipe connecting portion 7 is provided in the upper half main body 1a. The crossover pipe connecting portion 7 is connected to a crossover pipe (not shown) for supplying steam from the upper half 1 of the passenger compartment to another steam turbine (low pressure turbine). A joint surface 8 is provided at the lower part of the upper half main body 1a. The joint surface 8 is brought into contact with the joint surface (not shown) of the lower half (not shown) of the passenger compartment, whereby the upper half 1 and the lower half of the passenger compartment are fastened by bolts or the like not shown. It is integrated.

  The upper / lower reversing jig for the upper half of the casing of the steam turbine and the upper / lower reversing method of the upper half of the casing of the steam turbine according to the present embodiment is a case where the upper half 1 of the casing of the steam turbine as shown in FIG. It can be suitably applied to.

  Next, an upside down jig (hereinafter simply referred to as an upside down jig) in the upper half of the casing of the steam turbine according to the present embodiment will be described with reference to FIGS. The upside down jig 30 is a jig for supporting the upper half 1 of the casing when the upper half 1 of the steam turbine having the rear claw leg 3 is turned upside down.

  As shown in FIG. 2, the upside down jig 30 according to the present embodiment is provided with a movable cradle 40 that is movable in a predetermined direction, and is movable in the same direction as the movable cradle 40. And the two rails 70 for guiding the movement of the movable cradle 40 and the reverse support device 50. Among these, the movable cradle 40 and the reverse support device 50 are movable in a direction opposite to at least the reverse direction R (see FIGS. 6A to 6D) of the upper half 1 of the passenger compartment. It is movable in the direction R and its reverse direction (that is, both directions along the rail 70).

  On the movable cradle 40, the upper half 1 of the vehicle compartment before being turned upside down is placed. Further, as shown in FIG. 3, the mobile cradle 40 is provided at the bottom of each rootstock 41 with two rootstocks 41 on which the upper half 1 of the vehicle is placed. Two adjusting steel members 42 for adjusting the height, a connecting receiving beam 43 provided at the lower part of the two adjusting steel members 42, and two sliding portions 44 provided at the lower part of the connecting receiving beam 43. . Of these, the sliding portion 44 is configured to be slidable on the rail 70.

  The sliding portion 44 includes a gantry 45 on which the connection receiving beam 43 is placed, a gate-shaped frame 46 provided at a lower portion of the gantry 45, and a sliding member 47 provided on a sliding surface between the rail 70, Is included. Among these, as the material of the sliding member 47, it is preferable to use Teflon (registered trademark) manufactured by DuPont. In this way, the movable cradle 40 is configured to be movable along the rail 70 by sliding on the rail 70.

  The inversion support device 50 is a device that supports the upper half 1 of the passenger compartment that is inverted upside down while holding the rear claw foot 3 of the upper half 1 of the passenger compartment. More specifically, as shown in FIGS. 4 and 5, the inversion support device 50 is capable of rotating the device upper half 51 that holds the rear claw foot 3 of the upper half 1 and the device upper half 51. The lower half 52 to be supported, the upper half 51 and the lower half 52 for raising and lowering the upper half 51, and the sliding portion 54 provided at the lower part of the elevation 53 are provided. Among these, the upper half 51 of the apparatus is connected to the accommodating portion 55 that accommodates the rear claw foot portion 3, the pressing portion 56 that presses the rear claw foot portion 3 accommodated in the accommodating portion 55, and the accommodating portion 55. And a plurality of upper half connecting portions 57 that rotatably connect the pressing portion 56 to the lower half 52 of the apparatus.

  In the present embodiment, the housing portion 55 is formed by joining a metal plate such as a steel plate by welding or the like, and is formed in a hollow shape (see FIGS. 5A and 5C). Such a housing part 55 is preferably reinforced by reinforcing ribs 58. The accommodating portion 55 includes an opening 59 that accommodates the rear claw foot portion 3. In order to accommodate the rear claw foot 3 in the opening 59, the size of the opening 59 is preferably larger than the size of the rear claw foot 3.

  The pressing part 56 is provided in the housing part 55. In the present embodiment, a bolt 60 screwed into the accommodating portion 55 and a plate 61 provided in the opening portion 59 are included. With such a configuration, the bolt 60 can press the rear claw foot 3 via the plate 61. In this way, the rear claw leg 3 housed in the accommodation part 55 is pressed by the pressing part 56, and the upper half 51 of the apparatus holds the rear claw leg 3 of the upper half 1 of the passenger compartment.

  The upper half connecting portion 57 is connected to the lower half 52 of the apparatus via a connecting pin 62 that serves as a rotation shaft. In the present embodiment, a plurality of upper half connecting portions 57 are arranged in the axial direction of the connecting pins 62, and the connecting pins 62 penetrate each upper half connecting portion 57.

  The apparatus lower half 52 includes a plurality of lower half connecting portions 63. The plurality of lower half connecting portions 63 are alternately arranged with the upper half connecting portions 57 in the axial direction of the connecting pins 62 described above, and the connecting pins 62 penetrate the lower half connecting portions 63 together with the upper half connecting portions 57. doing. In this way, the lower half connecting portion 63 is connected to the upper half connecting portion 57 by the connecting pin 62 and supports the device upper half 51 so as to be rotatable.

  The elevating part 53 is provided at the lower part of the lower half 52 of the apparatus and supports the lower half 52 of the apparatus. The elevating part 53 includes two hydraulic cylinders 64 that are obliquely provided in a cross shape, and a hydraulic unit 66 that is connected to each hydraulic cylinder 64 via a hydraulic hose 65. By driving the hydraulic unit 66, the upper half 51 and the lower half 52 of the apparatus can be raised and lowered, and the elevating part 53 can adjust the height of the upper half 51 and the lower half 52 of the apparatus.

  The sliding part 54 includes a gantry 67 on which the elevating part 53 is placed, and a gate-shaped frame 68 provided at the lower part of the gantry 67.

  In the present embodiment, two sliding members 69 and 71 are provided between the rail 70 and the reverse support device 50. More specifically, the sliding portion 54 of the inversion support device 50 includes a sliding member 69 provided on a sliding surface with the rail 70. A sliding member 71 is provided on each rail 70. As the material of these sliding members 69 and 71, it is preferable to use the same material as that of the sliding member 47 of the movable cradle 40 described above. In this way, the movable cradle 40 and the reverse support device 50 can move on the rail 70 while reducing friction with the rail 70.

  As shown in FIGS. 3 to 4, the two rails 70 are installed in parallel to each other. The distance between the two rails 70 is preferably substantially the same as the distance between the two rear claw feet 3 in the upper half 1 of the passenger compartment. In addition, the rail 70 according to the present embodiment is preferably formed of two H-shaped steels having relatively high strength.

  Between the two rails 70, a fixed pedestal 80 on which the upper half 1 of the passenger compartment after the upside down is placed is installed (see FIG. 6D). The fixed pedestal 80 includes a rootstock 81 on which the upper half 1 of the passenger compartment is placed, and a pedestal portion 82 provided at the lower portion of the rootstock 81. The term “fixed cradle” is used as a term that means a member that is not intended to move in a predetermined direction, such as the mobile cradle 40 or the reverse support device 50.

  Next, the operation in the present embodiment having such a configuration will be described. Here, the upside down method of the upper half 1 of the passenger compartment shown in FIG. 1 will be described with reference to FIGS. 6A to 6D.

  First, the mobile cradle 40 and the rail 70 are prepared.

  In this case, first, a rail 70 (see FIG. 2) that guides the movement of the movable cradle 40 and the reverse support device 50 is installed on the floor surface of the work space for performing upside down. At this time, the two rails 70 are installed in parallel to each other so as to be substantially the same as the distance between the two rear claw feet 3 in the upper half 1 of the passenger compartment. Subsequently, the movable cradle 40 is placed on the rail 70. Specifically, the movable cradle 40 is arranged so that the frame 46 straddles the rail 70 (see FIG. 3). At this time, the sliding member 47 of the sliding portion 44 comes into contact with the sliding member 71 of the rail 70.

  After the preparation of the mobile cradle 40 and the rail 70 is completed, the upper half 1 of the passenger compartment is placed on the mobile cradle 40. In this case, first, the upper half 1 of the passenger compartment is removed from the lower half of the passenger compartment (not shown). Subsequently, the removed upper half 1 of the passenger compartment is placed on the rootstock 41 of the mobile cradle 40.

  Subsequently, as shown in FIG. 2, the rear claw foot portion 3 of the upper half 1 of the passenger compartment placed on the movable cradle 40 is held by the inversion support device 50. In this case, first, the inversion support device 50 is disposed so that the frame 68 straddles the rail 70 at a position behind the rear claw foot 3 (see FIG. 4). At this time, the sliding member 69 of the sliding portion 54 comes into contact with the sliding member 71 of the rail 70. Next, the inversion support device 50 moves on the rail 70, and the rear claw foot portion 3 of the upper half 1 of the passenger compartment is inserted into the accommodation portion 55 of the upper half 51 of the device together with the plate 61 and accommodated. Next, the plate 61 is pressed against the back claw foot 3 by the bolt 60, and the back claw foot 3 is pressed. In this way, the rear claw leg 3 of the upper half 1 of the passenger compartment is held by the inversion support device 50.

  Next, the upper half 1 of the passenger compartment held by the reverse support device 50 is turned upside down while being supported by the reverse support device 50.

  In this case, first, as shown by a two-dot chain line in FIG. 6A, the parent hook 10 is hung on the front trunnion 4 of the upper half 1 of the passenger compartment via the sling wire 11. Next, as shown by a broken line and a solid line in FIG. 6A, the vehicle is connected to the parent hook 10 until the upper half 1 of the passenger compartment rises (rotates about 90 °) (until the state of the solid line in FIG. 6A). The suspension wire 12 is wound up. At this time, the rear claw foot portion 3 of the upper half 1 of the passenger compartment is held in the accommodating portion 55 of the inversion support device 50, and the upper half 51 of the inversion support device 50 is rotatable to the lower half 52 of the device. For this reason, the upper half 1 of the passenger compartment rotates clockwise around the connecting pin 62 that connects the upper half 51 and the lower half 52 of the apparatus while being supported by the reversal support device 50. In addition, while the vehicle upper half 1 is turned upside down, it is preferable that the reverse support device 50 is restrained from moving in the reverse direction R by a rootstock or the like.

  After the upper half 1 of the passenger compartment rises, the movable pedestal 40 is moved in the direction opposite to the reverse direction R, as shown in FIG. 6B. In this manner, a space for moving the inversion support device 50 on the rail 70 is secured.

  Next, from the state of the two-dot chain line in FIG. 6B, the reversing support device 50 is moved in the direction opposite to the reversing direction R of the upper half 1 of the vehicle (movable) while the suspension wire 12 connected to the parent hook 10 is wound down. Move to the cradle 40 side). Here, the center of gravity of the upper half 1 of the passenger compartment is the side opposite to the joint surface 8 side from the front trunnion 4 due to the influence of the steam inlet pipe connecting portion 6 and the crossover pipe connecting portion 7 (upper side in FIG. It is on the right side of the two-dot chain line in FIG. 6B. 6B, when the suspension wire 12 is unwound from the state of the two-dot chain line in FIG. 6B, the upper half 1 of the passenger compartment has the joint surface 8 facing upward as shown by the broken line and the solid line in FIG. 6B. And the connecting pin 62 as a fulcrum is rotated clockwise. For this reason, the inversion support device 50 moves in the direction opposite to the inversion direction R due to the influence of the center of gravity of the upper half 1 of the passenger compartment. At this time, the sliding member 71 is provided on the rail 70, and the sliding member 69 is provided on the sliding surface of the sliding portion 54 of the reversal support device 50 with the rail 70 (FIG. 4 ( b)). Thereby, the friction between the rail 70 and the reverse support device 50 is reduced.

  Next, as shown in FIG. 6C, the rear claw foot 3 of the upper half 1 of the passenger compartment is raised. That is, as the suspension wire 12 is rolled down, the steam inlet pipe connecting part 6 or the crossover pipe connecting part 7 approaches the floor surface, so that the rear claw foot part 3 is raised by the elevating part 53 before contacting. In this case, the back claw foot 3 is raised until the back claw foot 3 reaches a desired height (height as shown in FIG. 6D).

  After the vehicle upper half 1 is turned upside down, the turned up vehicle upper half 1 is placed on the fixed pedestal 80 as shown in FIG. 6D. In this case, first, the fixed cradle 80 is installed. At this time, for example, a fixed cradle 80 is installed between the two rails 70. Next, the suspension wire 12 is wound down, and the portion of the upper half 1 of the passenger compartment opposite to the rear claw foot 3 is placed on the rootstock 81 of the fixed cradle 80.

  In this way, the joint surface 8 of the upper half 1 of the passenger compartment is directed upward and becomes substantially horizontal. Then, the parent hook 10 and the sling wire 11 are removed, and the upside down operation of the upper half 1 of the passenger compartment is completed.

  Thus, according to the present embodiment, during the upside down operation of the upper half 1 of the passenger compartment, the reverse support device 50 holds the rear claw foot 3 and the upper half 1 of the passenger compartment is supported by the reverse support device 50. Yes. As a result, it is possible to suppress the behavior of the upper half 1 of the passenger compartment from being shaken during the upside down operation and becoming unstable. In particular, even when the upper half 1 of the vehicle compartment stands up, the shake of the upper half 1 of the vehicle compartment can be suppressed. For this reason, the safety | security of the upside down operation | work can be improved.

  Further, according to the present embodiment, the movable cradle 40 and the reverse support device 50 can be moved in the direction opposite to the reverse direction R of the upper half 1 of the passenger compartment. As a result, the upper half 1 of the passenger compartment 1 is erected and rotated in the direction in which the upper half 1 of the passenger compartment 1 is laid so that the joint surface 8 faces upward, using the work space required for rotating the upper half 1 to about 90 °. Can be moved. For this reason, the horizontal work space at the time of upside down of the upper half 1 of the passenger compartment can be reduced. Further, since the reverse support device 50 can be moved in the direction opposite to the reverse direction R while holding the rear claw foot 3, the upper half 1 of the passenger compartment is grounded and rotated 180 ° in a substantially horizontal direction. Can be eliminated. For this reason, the working space in the height direction when the upper half 1 of the passenger compartment is turned upside down can be reduced.

  Further, according to the present embodiment, the upper half 51 of the reverse support device 50 that supports the upper half 1 of the passenger compartment is rotatably held by the lower half 52 of the device. As a result, the vehicle upper half 1 can be held while following the rotating vehicle upper half 1. For this reason, it is possible to suppress the behavior of the upper half 1 of the passenger compartment from being shaken during the upside down operation and becoming unstable. As a result, the safety of the upside down operation can be improved.

  Moreover, according to this Embodiment, the raising / lowering part 53 of the inversion support apparatus 50 can raise the back claw leg part 3 of the vehicle interior upper half 1. FIG. Thereby, the raising / lowering part 53 raises the back cat leg part 3 at the time of crane lowering, and it can suppress that the steam inlet pipe connection part 6 or the crossover pipe connection part 7 contacts a floor surface. Moreover, in order to avoid that the steam inlet pipe connection part 6 or the crossover pipe connection part 7 comes into contact with the floor surface after being turned upside down, the height at which the housing part 55 of the upper half 51 of the apparatus is provided is suppressed from being increased. it can. As a result, the working space in the height direction can be reduced, and the safety of the upside down work can be improved.

  Further, according to the present embodiment, the rear claw foot portion 3 of the upper half 1 of the passenger compartment accommodated in the accommodation portion 55 of the upper half 51 of the apparatus is pressed by the pressing portion 56. Thus, it is possible to eliminate the need to process the rear claw foot 3 in order to hold the rear claw foot 3. For this reason, the efficiency of the upside down operation can be improved.

  Further, according to the present embodiment, the sliding member 69 and the sliding member 71 are interposed between the reverse support device 50 and the rail 70. Thereby, the friction between the rail 70 and the reverse support device 50 can be reduced. For this reason, the inversion support apparatus 50 can be moved smoothly.

  In the above-described embodiment, an example in which the movable cradle 40 and the reverse support device 50 are guided to move by the rail 70 has been described. However, the rail 70 is not limited as long as the movable cradle 40 and the reverse support device 50 can be moved in the direction opposite to the reverse direction R of the upper half 1 of the passenger compartment. Even in this case, the safety of the upside down operation can be improved and the work space can be reduced.

  Moreover, in this Embodiment mentioned above, the example in which the accommodating part 55 of the apparatus upper half 51 was formed in hollow shape with metal plates, such as a steel plate, was demonstrated. However, the present invention is not limited to this, and the housing portion 55 may be formed by casting, and the housing portion 55 may be formed in a solid shape.

(Second Embodiment)
Next, with reference to FIG. 7, a description will be given of an upside down jig for the upper half of the casing of the steam turbine and an upside down method of the upper half of the casing of the steam turbine in the second embodiment.

  The second embodiment shown in FIG. 7 is mainly different in that a position adjusting device for adjusting the position of the reversing support device is provided, and the other configuration is the first configuration shown in FIGS. 1 to 6D. This is substantially the same as the embodiment. In FIG. 7, the same parts as those of the first embodiment shown in FIGS. 1 to 6D are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 7, in the present embodiment, the upside down jig 30 further includes a position adjusting device 90 that adjusts the position of the inversion support device 50. The position adjusting device 90 is configured as a clamp jack. Here, an example in which the position adjusting device 90 is a so-called H-shaped steel clamp jack is shown.

  The position adjusting device 90 in the present embodiment includes a hydraulic cylinder 91 connected to the sliding portion 54 of the reversing support device 50, a clamp portion 92 provided at the lower portion of the hydraulic cylinder 91, and a cylinder hydraulic hose to the hydraulic cylinder 91. And a hydraulic unit 95 coupled to the clamp portion 92 via a clamping hydraulic hose 94. Among these, the hydraulic cylinder 91 is pivotally connected to the sliding portion 54 of the reverse support device 50 by a connecting pin 96. By driving the hydraulic unit 95, pressure oil is supplied from the hydraulic unit 95 to the hydraulic cylinder 91 via the cylinder hydraulic hose 93 so that the hydraulic cylinder 91 can be extended. Further, by driving the hydraulic unit 95, the hydraulic oil is discharged from the hydraulic cylinder 91 via the cylinder hydraulic hose 93, and the hydraulic cylinder 91 can be contracted. Thus, the position adjusting device 90 moves the reverse support device 50 in the direction opposite to the reverse direction R by extending the hydraulic cylinder 91 and contracts the reverse support device 50 in the reverse direction by contracting the hydraulic cylinder 91. The position of the reverse support device 50 can be adjusted.

  The clamp part 92 is placed on the rail 70. By driving the hydraulic unit 95, pressure oil is supplied from the hydraulic unit 95 to the clamp unit 92 via the clamping hydraulic hose 94, and the clamp unit 92 can be clamped to the rail 70. In addition, by driving the hydraulic unit 95, the pressure oil is discharged from the clamp portion 92 via the clamp hydraulic hose 94, and the clamp portion 92 can be released from the rail 70. In this way, the position adjusting device 90 can be fixed or opened on the rail 70.

  When the vehicle upper half 1 is turned upside down while being supported by the reverse support device 50, the hydraulic hose for clamping is used from the hydraulic unit 95 until the vehicle upper half 1 stands up (until the solid line in FIG. 6A). Pressure oil is supplied to the clamp portion 92 through 94. Accordingly, the reverse support device 50 is restrained from moving in the reverse direction R and remains in the position shown in FIG. 6A. Then, when the casing upper half 1 is rotated so that the joint surface 8 faces upward from the standing state of the casing upper half 1 (the state shown by the two-dot chain line in FIG. 6B), the cylinder hose 93 is used. The pressure of the pressure oil supplied to the hydraulic cylinder 91 is gradually increased, and the hydraulic cylinder 91 is gradually extended. As a result, the reverse support device 50 is moved in the direction opposite to the reverse direction R while adjusting the position of the reverse support device 50 according to the posture (rotation angle) of the upper half 1 of the passenger compartment. When the reverse support device 50 is moved in the reverse direction R, the pressure oil is discharged from the hydraulic cylinder 91 and the hydraulic cylinder 91 is contracted.

  As described above, according to the present embodiment, while the upper half 1 of the passenger compartment 1 is turned from the standing state in the direction in which the upper half 1 of the passenger compartment is laid so that the joint surface 8 faces upward, The position of the reverse support device 50 can be adjusted according to the posture of the upper half 1 of the room. As a result, it is possible to prevent the moving speed of the reverse support device 50 in the direction opposite to the reverse direction R from increasing. Further, the position adjusting device 90 can suppress the movement of the upper half 1 of the passenger compartment in the reverse direction R until the upper half 1 of the passenger compartment is raised, and the behavior of the upper half 1 of the passenger compartment becomes unstable. Can be suppressed. As a result, the safety of the upside down operation can be further improved.

  In the above-described embodiment, the example in which the hydraulic cylinder 91 is pivotally connected to the sliding portion 54 of the inversion support device 50 by the connecting pin 96 has been described. However, if the hydraulic cylinder 91 is connected to the sliding portion 54 substantially horizontally, the connection pin 96 is not necessarily provided. Even in this case, the position of the reverse support device 50 can be adjusted.

  According to the embodiment described above, the safety of the upside down operation can be improved and the work space can be reduced.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  1: Upper half of vehicle compartment, 3: Rear claw leg, 30: Upside down jig, 40: Mobile cradle, 50: Inversion support device, 51: Upper half of device, 52: Lower half of device, 53: Elevator 55: accommodating part, 56: pressing part, 69: sliding member, 70: rail, 71: sliding member, 80: fixed cradle, 90: position adjusting device, R: reverse direction

Claims (5)

An upside down jig for the upper half of the casing of the steam turbine that supports the upper half of the casing when the upper half of the casing of the steam turbine having the held portion is turned upside down,
A movable cradle on which the upper half of the passenger compartment is placed;
A reversing support device that holds the held portion of the upper half of the passenger compartment and supports the upper half of the passenger compartment that is turned upside down.
The movable cradle and the reversing support device are movable upside down jigs in the upper half of the casing of the steam turbine, and are movable in a direction opposite to the reversing direction of the upper half of the casing.   The said inversion support apparatus has the apparatus upper half which hold | maintains the said to-be-held part of the said vehicle interior upper half, and the apparatus lower half which supports the said apparatus upper half so that rotation is possible. An upside down jig for the upper half of the passenger compartment of the steam turbine described.   The vertical reversing jig for the upper half of the casing of the steam turbine according to claim 2, wherein the reversing support device further includes an elevating part for elevating and lowering the upper half of the apparatus and the lower half of the apparatus.   The steam turbine according to claim 2, wherein the upper half of the apparatus includes a housing portion that houses the held portion and a pressing portion that presses the held portion housed in the housing portion. Upside down jig in the upper half of the car. An upside down method of the upper half of the casing of the steam turbine that vertically inverts the upper half of the casing of the steam turbine having the held portion,
Preparing a mobile cradle; and
Placing the upper half of the passenger compartment on the mobile cradle;
Holding the held portion of the upper half of the passenger compartment placed on the movable cradle in a reverse support device;
Reversing up and down while supporting the upper half of the passenger compartment held by the reversing support device with the reversing support device;
Placing the upper half of the vehicle upside down on a stationary cradle,
A method for vertically reversing the upper half of a casing of a steam turbine, wherein in the step of vertically reversing the upper half of the casing, the reversing support device is moved in a direction opposite to the direction of reversing the upper half of the casing.

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