JP5854646B2 - Suspension jig and wing ring lifting method - Google Patents

Description

The present invention relates to a suspension jig for lifting a blade ring and a method for lifting a blade ring in a step of processing a blade ring that is a constituent member of a rotary machine such as a steam turbine, a gas turbine, and a compressor.

  A blade ring which is a constituent member of a steam turbine, a gas turbine, a compressor, or the like that is a rotating machine is manufactured through a plurality of processes. When moving the blade ring to the next step after the completion of one process, as shown in FIG. 8, first, the board 3 is installed under the blade ring 50 to provide a gap, and then Place the rubber plate 4 in the gap so as to cover the lower surface of the wing ring 50, then wind the wire rope 5 around the wing ring 50 with the rubber plate 4 sandwiched, and finally squeeze the wire rope 5 to hook the crane And the wing ring 50 is lifted.

  On the other hand, although not intended to lift the blade ring, there is a case where the object to be transported is lifted through a lifting jig.

For example, Patent Literature 1 discloses a hanging jig for lifting an object to be transported. As shown in FIG. 9, the hanging jig is provided so as to face each other at a rod-shaped frame 201, a pair of arms 202 that can slide along the frame 201, and a lower end of the pair of arms 202. A claw 203 and driving means 204 for sliding the pair of arms 202 along the frame 201 are provided.
The driving means 204 of the suspension jig 200 is composed of a feed screw 205 disposed on the upper surface of the frame 201 and screwed into a pair of arms 202, and an electric motor 207 connected to one end of the feed screw 205. Yes. By rotating the feed screw 205 by the electric motor 207, the pair of arms 202 are brought close to each other, and the claw 203 is inserted into a cylindrical conveyance object disposed between the pair of arms 202, and the claw 203 is conveyed. Hang on the object to lift the object to be transported.

Further, for example, Patent Document 2 discloses a frame extending in the horizontal direction, a pair of arms slidable along the frame, and a plate-like flange provided to face each other at the lower ends of the pair of arms. A suspension jig comprising a drive means for sliding a pair of arms along the frame is disclosed.
The suspension jig driving means is provided with a cylinder that is extendable in the longitudinal direction of the frame and moves the pair of arms closer to and away from each other by extension and contraction. With this cylinder, the pair of arms are brought close to each other, and the pair of flanges are brought into contact with the object to be transported and lifted.

Further, for example, in Patent Document 3, a frame, a pair of arms slidable along the frame, a convex gripping member provided to face each other at the lower ends of the pair of arms, and a pair of arms There is disclosed a suspension jig including an operation lever for moving the arms in directions toward and away from each other.
After the pair of arms are brought close to each other with this operation lever and the convex gripping member is inserted into the concave portion of the object to be transported, the operation lever is fitted into a groove provided at a predetermined position to fix the operation lever, The gripping member is hooked on the transport object and the transport object is lifted.

Further, for example, in Patent Document 4, as shown in FIG. 10, a rectangular column-shaped frame 222, a rod-shaped support member 224 attached to a side surface of the frame 222 so as to protrude from the frame 222, and the support member A lifting jig 220 is disclosed that includes a lifted portion 226 having an L-shape provided on the frame 222 so as to protrude from the frame 222 in the same direction as the direction in which the 224 protrudes.
When lifting the object to be transported 228 with the lifting jig 220, first, the support member 224 of the lifting jig 220 is inserted into the hole 229 formed in the transporting object 228, and then provided to the lifted portion 226. The hanging tool 230 is hung on the hanging hole 227, and the carrying object 228 is lifted so as to be inclined. The transport object 228 in an inclined state is transported to a predetermined position along the inclined surface 231.

JP 2010-173754 A JP-A 62-36294 Japanese Utility Model Publication No. 6-47283 Japanese Patent Laid-Open No. 1-137016

  However, in the method of lifting the wing ring by winding the wire rope around the wing ring, it takes time to install a wooden board under the wing ring or sandwich a rubber plate between the wing ring and the wire rope. It takes time to prepare.

Further, the suspension jig described in Patent Document 1 cannot be applied to a non-cylindrical blade ring because the hook is lifted in a state of being inserted and hooked into a cylindrical transport object.
The suspension jig described in Patent Document 2 cannot be applied to a blade ring having a projection because the plate-like flange is lifted by contacting the blade ring.
Furthermore, in the suspension jigs described in Patent Document 1 and Patent Document 2, since the weight is increased by providing driving means such as an electric motor and a cylinder, it is difficult for a person to carry these suspension jigs.

  In addition, the suspension jig described in Patent Document 3 cannot be applied to a blade ring that does not have a concave portion because the convex gripping member is inserted into the concave portion of the object to be transported and lifted. Further, since only one groove for fixing the operation lever is provided, the distance between the pair of gripping members is always constant. Therefore, it is not possible to transport a plurality of types of transport objects having different shapes and sizes.

  Further, the suspension jig described in Patent Document 4 cannot be applied to a blade ring because a hole must be formed in the object to be transported.

Therefore, an object of the present invention is to provide a lightweight lifting jig and a blade ring lifting method capable of lifting a blade ring having a different shape and size without taking time and effort.

The hanging jig according to the present invention that solves the above-described problem is a hanging jig that lifts the blade ring of a rotary machine,
A jig body having a bifurcated portion having a pair of legs bifurcated and a lifted portion extending on the bifurcated portion and having a hanging hole for attaching a lifting tool;
A first abutting member fixed to one of the pair of legs of the bifurcated portion;
A feed screw that is screwed into a through screw hole formed in the other second leg of the pair of legs of the bifurcated portion;
A second abutting member fixed to an end portion of the feed screw near the first leg,
The first contact member is fixed to a surface of the first leg that faces the second leg, and the first contact member and the second contact member are opposed to each other.
The distance between the second contact member and the first contact member is adjusted by moving the second contact member along the axial direction of the feed screw by the rotation of the feed screw. It is characterized by that.
The first leg of the hanging jig may be inserted between the inner shroud and the outer shroud of the blade ring. The lifted portion protrudes from the first leg along a direction from the second leg side to the first leg side at a position shifted from the first leg toward the base side of the first leg. You may extend as you do.

According to the above-mentioned suspension jig, by holding the blade ring directly by the first contact member and the second contact member and lifting it, the board is held under the blade ring when lifting with the conventional wire rope. Or the trouble of sandwiching a rubber plate between the wire rope and the wing ring can be saved, and the working efficiency is improved.
Moreover, since the amount of movement of the second contact member can be adjusted by rotating the feed screw, it is possible to lift the blade rings having different shapes and sizes.
Furthermore, the suspension jig is a simple mechanism having a function of sliding the second abutting member with the feed screw, so that the weight can be reduced and the person can carry the suspension jig by hand. .

  A plurality of the suspension holes may be formed in the suspended portion.

  As described above, since a plurality of suspension holes are formed in the lifted portion, one of the suspension holes is selected according to the shape of the blade ring and the blade ring is lifted to lift the blade ring horizontally. be able to. Thereby, compared with the case where it lifts in the state which inclined the blade ring, danger, such as dropping, can be reduced.

Further, the lifted portion extends so as to protrude from the first leg along a direction from the second leg side toward the first leg side,
At least one of the suspension holes may be provided in a portion of the suspended portion that protrudes from the first leg.

  As described above, since the lifted portion extends so as to protrude from the first leg, the center of gravity when the position of the center of gravity when the blade ring is lifted exists in the portion protruding from the first leg. The wing ring can be lifted horizontally by using the lifting hole of the lifted portion immediately above the position.

The first abutting member is a first abutting bolt that is screwed into a screw hole formed in the first leg and fixed to the first leg.
The second contact member is a second abutting bolt that is screwed into a screw hole formed in the feed screw along the axial direction of the feed screw and fixed to the feed screw.
The first and second bolts have heads facing each other;
The distance between the second contact bolt and the first contact bolt may be adjusted by moving the second contact bolt along the axial direction of the feed screw by the rotation of the feed screw.

  In this way, by using the first abutting bolt and the second abutting bolt as the first abutting member and the second abutting member, the wing ring disposed between the pair of legs is connected to the head of the first abutting bolt and the second abutting bolt. It can be gripped with the head of a two-head bolt. At this time, since the force can be concentrated and acted on the heads of the first and second bolts, the blade ring can be securely gripped.

In addition, it further comprises a stopper provided detachably on the portion between the pair of legs of the bifurcated portion,
The pad may be formed to extend from the portion between the pair of legs by a predetermined distance in a direction in which the pair of legs extends.

In this way, by providing a paddle at the portion between the pair of legs of the bifurcated portion, the inside of the pair of legs is narrowed, and the length of the blade ring inserted into the pair of legs is regulated. Therefore, the position where the blade ring is gripped becomes shallow. As a result, when the blade ring is gripped, the leg is inserted shallowly between the inner shroud and the outer shroud of the blade ring, and the leg contacts the blade formed between the inner shroud and the outer shroud. Can be prevented.
In addition, since the length of the blade ring inserted into the recess between the pair of legs can be adjusted by providing the stopper, the blade ring having a different shape and size can be applied by preparing a plurality of stoppers. In other words, the depth of the uppermost surface of the inner shroud or outer shroud of the blade ring within the pair of legs can be adjusted.

In addition, the above-mentioned stopper is composed of a pair of plates arranged opposite to each other and a connecting plate that connects the center portions of the surfaces facing each other to the pair of plates, and has a H-shaped cross section. Are arranged so that the portion between the pair of legs is surrounded by the pair of plates and the connecting plate,
The said latch may be connected to the said part between a pair of said legs with a fastener.

  Since the above-mentioned stopper having an H-shaped cross section is generally commercially available, it has excellent availability and can be obtained at low cost. In addition, by providing a braid with a H-shaped cross section between the pair of legs, the first abutment member, the second abutment member, and the brace abut on the wing ring, so that the wing ring is securely gripped. Can be lifted.

  Moreover, you may further provide the handle | steering-wheel for rotating the said feed screw in the edge part on the opposite side to the said 1st leg of the said feed screw.

  Thus, since the handle is provided at the end of the feed screw, the length of the feed screw fed to the first leg side can be easily adjusted. In addition, since the handle is provided at the end opposite to the first leg of the feed screw, the handle can be rotated without interfering with other portions of the suspension jig and the blade ring.

  In addition, a clearance groove may be formed along the root of each leg at the base of each of the pair of legs, of the two forks, on the side of the pair of legs facing each other.

In this way, a clearance groove is formed at the base of each leg, so that a gap is formed between the bifurcated portion and the blade ring while holding the blade ring. Interference can be prevented.
Further, by providing the relief groove, it is possible to prevent stress from concentrating on the base portion of each leg.

The blade ring lifting method according to the present invention includes:
A jig body having a bifurcated portion having a pair of legs bifurcated and a lifted portion extending on the bifurcated portion and having a hanging hole for attaching a lifting tool;
A first abutting member fixed to one of the pair of legs of the bifurcated portion;
A feed screw that is screwed into a through screw hole formed in the other second leg of the pair of legs of the bifurcated portion;
A second abutting member fixed to an end portion of the feed screw near the first leg,
The first contact member is fixed to a surface of the first leg that faces the second leg, and the first contact member and the second contact member are opposed to each other.
The distance between the second contact member and the first contact member is adjusted by moving the second contact member along the axial direction of the feed screw by the rotation of the feed screw. A lifting method for lifting a blade ring of a rotating machine using a suspended jig,
The first abutment of the suspension jig against the outer peripheral surface of the inner shroud of the blade ring or the inner peripheral surface of the outer shroud of the blade ring, which is inclined with respect to a direction orthogonal to the radial direction of the blade ring. A member is brought into contact, and the second contact member is brought into contact with a surface opposite to the outer peripheral surface of the inner shroud or the inner peripheral surface of the outer shroud with which the first contact member is in contact. And fixing the blade ring to the suspension jig;
Hoisting the blade ring by a hoisting device to which the suspension jig is attached using the suspension hole, and
In the step of fixing the blade ring to the suspension jig, the blades of the blade ring as the outer peripheral surface of the inner shroud or the inner peripheral surface of the outer shroud contacted by the first contact member is directed upward. The blade ring is gripped from above by the suspension jig oriented so that the first leg and the second leg extend downward in a state where the blade ring is oriented so as to fall to the side. .
Further, the blade ring processing method according to the present invention is the above-described suspension jig, wherein the first abutting member and the second abutting member are used to connect either the inner shroud or the outer shroud of the wing ring. The blade ring is gripped and lifted to convey the blade ring to a machine tool.

According to the blade ring lifting method and the processing method described above, one of the inner shroud and the outer shroud of the blade ring disposed between the pair of legs is held by the first contact member and the second contact member. By lifting the wing ring with a conventional wire rope, you can save the trouble of pinching wood under the wing ring or sandwiching a rubber plate between the wire rope and the wing ring. , Work efficiency is improved.
Moreover, since the amount of movement of the second contact member can be adjusted by rotating the feed screw, it is possible to lift the blade rings having different shapes and sizes.

In addition, the outer peripheral surface of the inner shroud and the inner peripheral surface of the outer shroud fall down toward the blade side in the direction perpendicular to the radial direction of the blade ring, and are orthogonal to the radial direction of the blade ring. Arrange the blade ring so as to be inclined with respect to the direction,
The first abutting member of the suspension jig is in contact with the outer peripheral surface of the inner shroud of the blade ring or the inner peripheral surface of the outer shroud, and the inner shroud is in contact with the first abutting member. Grip and lift either the inner shroud or the outer shroud of the blade ring so that the second contact member contacts the outer peripheral surface or the surface of the outer shroud opposite to the inner peripheral surface. May be.

Thus, since the blade ring is arranged so that the outer peripheral surface of the inner shroud inclined to the blade side and the inner peripheral surface of the outer shroud face upward, the outer peripheral surface of the inner shroud and the inner peripheral surface of the outer shroud When the blade ring is lifted by bringing the first abutting member into contact with any one of the above, the upper end portion of the outer peripheral surface of the inner shroud or the upper end portion of the inner peripheral surface of the outer shroud vanes above the first abutting member. It will be located beyond the side. Thereby, the upper end part of the outer peripheral surface of the inner shroud or the upper end part of the inner peripheral surface of the outer shroud is caught by the first contact member, so that the blade ring can be prevented from falling.
Specifically, when the inner shroud is gripped and lifted so that the first contact member contacts the outer peripheral surface of the inner shroud and the second contact member contacts the inner peripheral surface of the inner shroud, Since the upper end portion of the outer peripheral surface of the shroud is caught by the first contact member, the blade ring can be prevented from dropping.
Further, when the outer shroud is gripped and lifted so that the first contact member contacts the inner peripheral surface of the outer shroud and the second contact member contacts the outer peripheral surface of the outer shroud, Since the upper end portion of the peripheral surface is caught by the first contact member, the blade ring can be prevented from dropping.

  According to the present invention, blade rings having different shapes and sizes can be lifted with little effort.

It is a front view showing a hanging jig concerning a first embodiment of the present invention. It is a front view which shows the state which hold | gripped the blade ring with the hanging jig. It is a perspective view which shows the state which lifted the wing ring with the hanging jig. It is a front view which shows the hanging jig which concerns on 2nd embodiment of this invention. It is a front view which shows the state which lifted the wing ring with the hanging jig. It is AA 'sectional drawing of FIG. It is a front view which shows the other Example of the hanging jig which concerns on this invention. It is a figure which shows the method of lifting a blade ring with the conventional wire rope. It is a figure which shows the conventional hanging jig. It is a figure which shows the conventional hanging jig.

Hereinafter, the hanging jig according to the present invention will be described in detail with reference to the drawings. In the following description, the case where the blade ring provided in the compressor is lifted by a lifting jig will be described. However, the present invention is not limited to this, and the blade ring is also applied to a steam turbine or a gas turbine. be able to. Further, it can be applied to both a stationary blade and a moving blade.
It should be noted that the dimensions, materials, shapes, relative arrangements, and the like of the components described in the following examples are not intended to limit the scope of the present invention unless otherwise specified, but are merely illustrative. It is just an example.

FIG. 1 is a front view showing a hanging jig according to a first embodiment of the present invention.
As shown in FIG. 1, the hanging jig 100 includes a jig main body 102 having a pair of legs 111 bifurcated and a first abutting member fixed to one first leg 112 of the pair of legs 111. 104, a feed screw 108 screwed into a through screw hole 114 formed in the other second leg 113 of the pair of legs 111, and a first end fixed to the end of the feed screw 108 near the first leg 112. 2 contact members 106.

The jig body 102 includes a bifurcated portion 110 having a pair of legs 111 branched into a bifurcated portion, and a lifted portion 120 that extends on the bifurcated portion 110 and has a hanging hole 121 for attaching a lifting tool. It is configured.
The lifted portion 120 extends so as to protrude from the first leg 112 along the direction from the second leg 113 side to the first leg 112 side.
A plurality of suspension holes 121 formed in the raised portion 120 are formed in a portion protruding from the first leg 112 and an upper portion of the bifurcated portion 110, respectively.

The first contact member 104 fixed to the first leg 112 is a first abutting bolt that is screwed into a screw hole 115 formed in the first leg 112. The head of the first contact bolt is provided on the surface 116 side of the first leg 112 facing the second leg 113.
The second contact member 106 is a second abutting bolt that is fixed to the feed screw 108 by screwing into a screw hole 109 formed in the feed screw 108 along the axial direction of the feed screw 108. The second contact member 106 and the first contact member 104 are arranged to face each other.
The first and second bolts were made of brass in order to prevent the blade ring 50 made of general structural rolled steel from being damaged. The material is not limited to this material, and any material having a hardness lower than that of the blade ring 50 may be used.

  A handle 107 for rotating the feed screw 108 is provided at the end of the feed screw 108 opposite to the first leg 112. By rotating the feed screw 108 with the handle 107, the second abutting member 106 is moved along the axial direction of the feed screw 108, and the second abutting member 106 and the first abutting member 104 are moved. The distance can be adjusted.

  Furthermore, relief grooves 122 are formed on the surfaces 116 and 117 of the pair of legs 111 facing each other and at the bases 118 and 119 of the pair of legs 111. The escape groove 122 is formed along the roots of the legs 112 and 113.

FIG. 2 is a front view showing a state in which the blade ring 50 is gripped by the hanging jig 100.
As shown in FIG. 2, the outer peripheral surface 53 of the inner shroud 51 of the blade ring 50 and the inner peripheral surface 56 of the outer shroud 55 are directed upward along the direction orthogonal to the radial direction of the blade ring 50. And the outer shroud 55 are inclined to the blade 54 side and inclined with respect to the direction orthogonal to the radial direction of the blade ring 50. In the following description, the front end portion on the outer peripheral surface 53 side of the inner shroud 51 that is inclined toward the blade 54 as it goes upward is referred to as an inclined end portion 59.
When gripping the inner shroud 51 of the blade ring 50 with the lifting jig 100, the first leg 112 is inserted between the inner shroud 51 and the outer shroud 55, and then the feed screw 108 is rotated clockwise by the handle 107. As a result, the second contact member 106 is moved toward the first contact member 104. Then, the first abutting member 104 and the second abutting member 106 are brought into contact with the outer peripheral surface 53 and the inner peripheral surface 52 of the inner shroud 51 to grip the blade ring 50.

  At this time, as described above, since the outer peripheral surface 53 of the inner shroud 51 of the blade ring 50 is inclined toward the blade 54, the contact surface between the first contact member 104 and the outer peripheral surface 53 of the inner shroud 51. Also, the inclined end portion 59 protrudes toward the first leg 112 side. However, since the escape groove 122 is formed at the base portion 118 of the first leg 112, the gap S is formed between the bifurcated portion 110 and the blade ring 50, so that the hanging jig 100 and the blade ring 50 are Does not interfere.

  Since the suspension jig 100 having the above-described configuration is a simple mechanism in which the feed screw 108 is moved by operating the handle 107, the weight can be reduced and the person can carry it by hand.

  Next, a method for conveying the blade ring 50 to the machine tool for processing using the hanging jig 100 will be described.

First, an operator moves with a plurality of suspension jigs 100 to a place where the blade ring 50 to be transported is placed. Note that the hanging jig 100 may be transported while being hung on a crane or the like.
Next, a plurality of hanging jigs 100 are attached to the blade ring 50.

FIG. 3 is a perspective view showing a state in which the blade ring 50 is lifted by the hanging jig 100.
As shown in FIG. 3, the hanging jigs 100 are attached to both ends of the inner shroud 51 of the divided arcuate blade ring 50.
As described above, the hanging jig 100 is attached by moving the second abutting member 106 toward the first abutting member 104 by rotating the handle 107, and the first abutting member 104 and the second abutting member 104. The abutment members 106 are brought into contact with the outer peripheral surface 53 and the inner peripheral surface 52 of the inner shroud 51 to grip the blade ring 50.

  Further, the shackle 124 is attached to the suspension hole 121 of the jig body 102. At this time, the suspension hole 121 positioned immediately above the center of gravity of the blade ring 50 and the suspension jig 100 is selected. That is, the suspension hole 121 for attaching the shackle 124 is selected according to the shape and size of the blade ring 50 to be lifted.

  Next, the hook 70 of a lifting device such as a crane is hung on the shackle 124, and the hanging jig 100 is lifted. At this time, since the wing ring 50 is hung directly above the center of gravity of the wing ring 50 and the hanging jig 100, the wing ring 50 is hung horizontally. When it is confirmed that the blade ring 50 is stable in the lifted state, the blade ring 50 is transported to the machine tool.

  In addition, although the case where the inner shroud 51 of the blade ring 50 is gripped by the lifting jig 100 and the blade ring 50 is lifted has been described, the present invention is not limited to the inner shroud 51, but when the outer shroud 55 is gripped and lifted. Is also applicable.

  As described above, according to the suspension jig 100 of the present embodiment, the blade ring 50 disposed between the pair of legs 111 is gripped by the first contact member 104 and the second contact member 106. By lifting the ring 50, when lifting with a conventional wire rope, it is possible to save the trouble of pinching a board under the wing ring 50 or sandwiching a rubber plate between the wire rope and the wing ring 50. Work efficiency is improved. Then, the blade ring 50 can be conveyed to the machine tool.

  In addition, since the plurality of suspension holes 121 are formed in the lifted portion 120, the blade ring 50 can be lifted by selecting one of the suspension holes 121 according to the shape of the blade ring 50 and lifting the blade ring 50. Can be lifted horizontally. Thereby, the danger of dropping etc. can be reduced compared with the case where the blade ring 50 is lifted in an inclined state.

  And since the to-be-lifted part 120 is extended so that it may protrude from the 1st leg 112, when the gravity center position when lifting the blade ring 50 exists in the part which protrudes from the 1st leg 112, The blade ring 50 can be lifted horizontally by using the suspension hole 121 of the suspended portion 120 immediately above the center of gravity.

  Further, by using the first abutting bolt and the second abutting bolt as the first abutting member 104 and the second abutting member 106, the blade ring 50 disposed between the pair of legs 111 can be connected to the head of the first abutting bolt. And the head of the second screw bolt. At this time, since the force can be concentrated and acted on the heads of the first and second bolts, the blade ring 50 can be securely gripped.

  Further, since the handle 107 is provided at the end of the feed screw 108, the length of the feed screw 108 fed to the first leg 112 side can be easily adjusted. Further, since the handle 107 is provided at the end of the feed screw 108 opposite to the first leg 112, the handle 107 can be rotated without interfering with other portions of the suspension jig 100 and the blade ring 50. .

  The clearance grooves 122 and 122 are formed in the base portions 118 and 119 of the legs 112 and 113, respectively, so that a gap S is formed between the bifurcated portion 110 and the blade ring 50 in a state where the blade ring 50 is gripped. Since it is formed, interference between the hanging jig 100 and the blade ring 50 can be prevented. Furthermore, by providing the relief groove 122, it is possible to prevent stress from concentrating on the base portions 118 and 119 of the legs 112 and 113.

  Further, when the first contact member 104 is brought into contact with the outer peripheral surface 53 of the inner shroud 51 and the blade ring 50 is lifted, the inclined end portion 59 of the inner shroud 51 is located above the first contact member 104 on the blade 54 side. It will be located beyond. As a result, the inclined end portion 59 of the inner shroud 51 is caught by the first abutting member 104, whereby the blade ring 50 can be prevented from dropping.

Next, a second embodiment of the hanging jig will be described. In the following description, portions corresponding to the above-described embodiment are denoted by the same reference numerals, description thereof is omitted, and differences are mainly described.
The suspension jig according to the second embodiment is a suspension jig 100 according to the first embodiment provided with a stopper.

FIG. 4 is a front view showing a hanging jig according to the second embodiment of the present invention.
As shown in FIG. 4, the hanging jig 130 according to the second embodiment includes a stopper 132 at a portion 123 (hereinafter referred to as an inter-leg portion) between a pair of legs 111 in the bifurcated portion 110.
The stopper 132 (see FIG. 6 to be described later) has an H-shaped cross section from a pair of plates 134 arranged to face each other and a connecting plate 136 that connects the center portions of surfaces facing each other to the pair of plates 134. It is configured in shape. Further, the contact metal 132 is formed to extend from the inter-leg portion 123 by a predetermined distance in the direction in which the pair of legs 111 extends. The predetermined distance is determined according to the shape of the wing ring 50 to be lifted.
As the material of the contact metal 132, aluminum which can prevent the blade ring 50 made of rolled steel for general structure from being damaged and is excellent in availability is used. The material is not limited to this material, and any material having a hardness lower than that of the blade ring 50 may be used.
The stopper 132 is disposed so that the inter-leg portion 123 is surrounded by the pair of plates 134 and the connecting plate 136, and is detachably connected to the inter-leg portion 123 by a fastener including a bolt 138 and a nut 140.

FIG. 5 is a front view showing a state in which the blade ring 50 is lifted by the hanging jig 130. FIG. 6 is a cross-sectional view taken along the line AA ′ of FIG.
As shown in FIGS. 5 and 6, when the inner shroud 51 of the blade ring 50 is gripped by the hanging jig 130, the first leg is interposed between the inner shroud 51 and the outer shroud 55 as in the first embodiment. 112 is inserted, and the first contact member 104 and the second contact member 106 are then brought into contact with the outer peripheral surface 53 and the inner peripheral surface 52 of the inner shroud 51 to grip the blade ring 50. At this time, the upper surface of the blade ring 50 is in close contact with the lower surface of the backing metal 132.
Since the brace 132 is provided in the inter-leg portion 123 of the hanging jig 130, the length of the blade ring 50 inserted between the pair of legs 111 is restricted, and the position where the blade ring 50 is gripped is shallow. Become. Accordingly, the first leg 112 is inserted shallower between the inner shroud 51 and the outer shroud 55 than in the first embodiment.

As described above, according to the hanging jig 130 in the present embodiment, in addition to the effects shown in the first embodiment, the first leg 112 is provided with the blade ring 50 by providing the stopper 132 in the inter-leg portion 123. Thus, the first leg 112 can be prevented from coming into contact with the blades 54 formed between the inner shroud 51 and the outer shroud 55.
In addition, since the length of the blade ring 50 inserted into the recess between the pair of legs 111 can be adjusted by providing the stopper 132, the blade rings having different shapes and sizes can be prepared by preparing the plurality of stoppers 132. 50. In other words, the depth of the uppermost surface of the inner shroud 51 of the blade ring 50 within the pair of legs 111 can be adjusted.
The first contact member 104, the second contact member 106, and the contact 132 are brought into contact with the blade ring 50 by providing the contact 132 having an H-shaped cross section between the pair of legs 111. The blade ring 50 can be reliably gripped and lifted.
Furthermore, since the metal-plated metal 132 having an H-shaped cross section made of aluminum is generally commercially available, it is highly available and can be obtained at low cost.

  In each of the above-described embodiments, the case where the lifted portion 120 extends so as to protrude from the first leg 112 along the direction from the second leg 113 side to the first leg 112 side has been described. However, the present invention is not limited to this, and as shown in FIG. 7, a lifting jig 150 in which the lifted portion 120 does not protrude from the first leg 112 may be used. For example, the present invention can be applied to the case where the center of gravity of the blade ring 50 and the hanging jig 150 exists below the lifted portion 120.

3 Wood 4 Rubber plate 5 Wire rope 50 Wing ring 51 Inner shroud 52 Inner peripheral surface 53 Outer peripheral surface 54 Blade 55 Outer shroud 56 Inner peripheral surface 59 Inclined end 70 Hook 100 Hanging jig 102 Jig body 104 First contact Member 106 Second abutting member 107 Handle 108 Feed screw 109 Screw hole 110 Bifurcated portion 111 Pair of legs 112 First leg 113 Second leg 114 Through screw hole 115 Screw hole 116 Surface 117 Surface 118 Base portion 119 Base portion 120 Lifting target Part 121 Suspension hole 122 Escape groove 123 Inter-leg portion 124 Shackle 130 Suspension jig 132 Bracket 134 Pair of plates 136 Connection plate 138 Bolt 140 Nut 150 Suspension jig 200 Suspension jig 201 Frame 202 Pair of arms 203 Claw 204 Driving means 205 Feed screw 207 Electric motor 220 Hanging jig 222 Frame 224 Support member 226 Lifting part 227 Hanging hole 228 Object 229 Hole 230 Hanging tool 231 Inclined surface S Gap

Claims (9)

A hanging jig for lifting a blade ring of a rotating machine,
A jig body having a bifurcated portion having a pair of legs bifurcated and a lifted portion extending on the bifurcated portion and having a hanging hole for attaching a lifting tool;
A first abutting member fixed to one first leg of a pair of legs of the bifurcated portion inserted between an inner shroud and an outer shroud of the blade ring;
A feed screw that is screwed into a through screw hole formed in the other second leg of the pair of legs of the bifurcated portion;
A second abutting member fixed to an end portion of the feed screw near the first leg,
The first contact member is fixed to a surface of the first leg that faces the second leg, and the first contact member and the second contact member are opposed to each other.
The distance between the second contact member and the first contact member is adjusted by moving the second contact member along the axial direction of the feed screw by the rotation of the feed screw. And
The lifted portion protrudes from the first leg along a direction from the second leg side toward the first leg side at a position shifted from the first leg toward the base side of the first leg. A hanging jig characterized by extending to   The suspension jig according to claim 1, wherein a plurality of the suspension holes are formed in the suspended portion.   The suspension jig according to claim 2, wherein at least one of the suspension holes is provided in a portion of the suspended portion that protrudes from the first leg. The first contact member is a first contact bolt that is screwed into a screw hole formed in the first leg and fixed to the first leg.
The second contact member is a second abutting bolt that is screwed into a screw hole formed in the feed screw along the axial direction of the feed screw and fixed to the feed screw.
The first and second bolts have heads facing each other;
The second screw bolt is moved along the axial direction of the lead screw by the rotation of the lead screw to adjust the distance between the second screw bolt and the first screw bolt. The hanging jig according to any one of claims 1 to 3. A pad that is detachably provided at a portion between the pair of legs of the bifurcated portion;
The said stopper metal is formed so that only a predetermined distance may be extended from the said part between a pair of said leg toward the direction where a pair of said leg extends, The any one of Claims 1-4 characterized by the above-mentioned. The hanging jig according to claim 1. A hanging jig for lifting a blade ring of a rotating machine,
A jig body having a bifurcated portion having a pair of legs bifurcated and a lifted portion extending on the bifurcated portion and having a hanging hole for attaching a lifting tool;
A first abutting member fixed to one of the pair of legs of the bifurcated portion;
A feed screw that is screwed into a through screw hole formed in the other second leg of the pair of legs of the bifurcated portion;
A second abutting member fixed to an end portion of the feed screw near the first leg,
The first contact member is fixed to a surface of the first leg that faces the second leg, and the first contact member and the second contact member are opposed to each other.
The distance between the second contact member and the first contact member is adjusted by moving the second contact member along the axial direction of the feed screw by the rotation of the feed screw. As
A pad that is detachably provided at a portion between the pair of legs of the bifurcated portion;
The pad is formed so as to extend from the portion between the pair of legs by a predetermined distance in a direction in which the pair of legs extends,
The pad is configured to have an H-shaped cross section from a pair of plates arranged opposite to each other and a connecting plate that connects the center portions of the surfaces facing each other to the pair of plates, The portion between the pair of legs is arranged so as to be surrounded by the pair of plates and the connecting plate,
The hanging jig, wherein the stopper is connected to the portion between the pair of legs with a fastener.   The suspension jig according to any one of claims 1 to 6, further comprising a handle for rotating the feed screw at an end opposite to the first leg of the feed screw. .   2. A relief groove is formed along the base of each leg at the base of each of the pair of legs of the pair of legs of the pair of legs facing each other. The hanging jig according to any one of? A jig body having a bifurcated portion having a pair of legs bifurcated and a lifted portion extending on the bifurcated portion and having a hanging hole for attaching a lifting tool;
A first abutting member fixed to one of the pair of legs of the bifurcated portion;
A feed screw that is screwed into a through screw hole formed in the other second leg of the pair of legs of the bifurcated portion;
A second abutting member fixed to an end portion of the feed screw near the first leg,
The first contact member is fixed to a surface of the first leg that faces the second leg, and the first contact member and the second contact member are opposed to each other.
The distance between the second contact member and the first contact member is adjusted by moving the second contact member along the axial direction of the feed screw by the rotation of the feed screw. A lifting method for lifting a blade ring of a rotating machine using a suspended jig,
The first contact member of the suspension jig contacts the outer peripheral surface of the inner shroud of the blade ring or the inner peripheral surface of the outer shroud of the blade ring, which is inclined with respect to the axial direction of the blade ring. The second abutting member is brought into contact with the outer peripheral surface of the inner shroud with which the first abutting member is in contact or the inner peripheral surface of the outer shroud. Fixing the ring to the hanging jig;
Hoisting the blade ring by a hoisting device to which the suspension jig is attached using the suspension hole, and
In the step of fixing the blade ring to the suspension jig, the blades of the blade ring as the outer peripheral surface of the inner shroud or the inner peripheral surface of the outer shroud contacted by the first contact member is directed upward. The blade ring is gripped from above by the suspension jig oriented so that the first leg and the second leg extend downward in a state where the blade ring is oriented so as to fall to the side. Wing ring lifting method.

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