JP5829434B2 - Suspension jig and wing ring lifting method - Google Patents

Description

The present invention relates to a lifting 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 one wing is completed and the wing ring is moved to the next step, as shown in FIG. 12, first, the board 3 is placed under the wing ring 50 to provide a gap. 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. 13, the hanging jig is provided so as to face each other at the rod-shaped frame 201, the pair of arms 202 that can slide along the frame 201, and the lower ends 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.

JP 2010-173754 A JP-A 62-36294 Japanese Utility Model Publication No. 6-47283

  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.

Accordingly, an object of the present invention is to provide a lightweight lifting jig and a method for lifting a blade ring that can lift a blade ring having a different shape and size without taking time and effort.

The hanging jig according to the present invention for solving the above-described problems is
A hanging jig comprising a pair of hanging jig units for attaching a blade ring of a rotating machine to a hoisting device,
Each of the hanging jig units is
A slide guide,
A first arm having a first sliding portion slidably attached to the slide guide on one end side, and a first recess on the other end on which a protrusion provided on the inner shroud of the blade ring is hooked;
A second sliding portion that is slidably attached to the slide guide is provided on one end side, and a second recess is provided on the other end side on which a protrusion provided on the outer shroud of the blade ring is hooked. A second arm provided to face the arm;
A feed screw provided along the slide guide and screwed into a screw hole formed in at least one of the first arm and the second arm;
Each of the suspension jig units moves the at least one of the first arm and the second arm along the slide guide by the rotation of the feed screw, so that the first arm and the second arm Configured to adjust the distance between ,
The pair of suspension jig units are provided at positions different from each other in the circumferential direction of the blade ring so that the slide guides of the suspension jig units are along the radial direction of the blade ring. To do.

According to the suspension jig, the blade ring is lifted by hooking the projection part of the inner shroud and the projection part of the outer shroud in the first recess of the first arm and the second recess of the second arm. When lifting with a conventional wire rope, it is possible to save the trouble of pinching a wooden board under the wing ring or sandwiching a rubber plate between the wire rope and the wing ring, thereby improving work efficiency.
Moreover, since the amount of movement of the first arm and the second arm 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 first arm and the second arm with a feed screw, so that the weight can be reduced and the person can carry the suspension jig by hand. Can do.

Further, the first sliding portion is a through hole formed on the one end side of the first arm and through which the slide guide passes,
The second sliding portion may be a through hole formed on the one end side of the second arm and through which the slide guide passes.

  Thus, the 1st arm and the 2nd arm can slide along a slide guide by making the 1st sliding part and the 2nd sliding part into a penetration hole, respectively.

  Moreover, it is good also as providing the movement control part which controls the movement with respect to the said slide guide of the said feed screw along the longitudinal direction of the said slide guide.

  According to the movement restricting portion, since the feed screw is immovable with respect to the slide guide, when the feed screw is rotated, at least one of the first arm and the second arm is reliably moved along the slide guide. be able to.

Further, the screw hole is formed in both the first arm and the second arm,
The feed screw is
A left-hand thread portion screwed into any one of the screw hole of the first arm and the screw hole of the second arm;
A right-hand thread portion screwed into the other of the screw hole of the first arm and the screw hole of the second arm;
Provided between the left-hand thread part and the right-hand thread, the left-hand thread part and the right-hand thread part have different diameter parts having different diameters,
The movement restricting portion may have one end fixed to the slide guide and the other end fitted to the different diameter portion so that the different diameter portion is rotatably supported by the slide guide.

  As described above, the left screw portion of the feed screw is screwed into one of the screw holes of the first arm and the second arm, and the right screw portion of the feed screw is screwed to the other of the screw holes of the first arm and the second arm. Since they are screwed together, the first arm and the second arm can be moved toward each other or moved away from each other by rotating the feed screw.

The surface of the first arm that faces the second arm is formed with a recessed portion that is recessed in a direction away from the second arm at a position between the first recess and the first through hole. And
On the surface of the second arm facing the first arm, a recess is formed that is recessed in a direction away from the first arm at a position between the second recess and the second through hole. It is good.

  In this manner, by providing the recessed portions on the mutually opposing surfaces of the first arm and the second arm, between the lifted blade ring and the first arm and between the blade ring and the second arm. Since gaps are respectively formed, interference between the blade ring and the first arm and between the blade ring and the second arm can be prevented.

  Moreover, it is good also as the hole being formed in the edge part of the said feed screw.

  Thus, since the hole is formed in the edge part of a feed screw, a feed screw can be easily rotated by engaging tools, such as a hexagon stick spanner, in the said hole.

  Moreover, the said hole is good also as being formed in the cap connected with the edge part of the said feed screw.

Since the feed screw is long, it is difficult to process a hole at the end of the feed screw. However, by using a separate cap, a hole can be easily provided at the end of the feed screw.
Further, by using a cap having a diameter larger than the diameter of the feed screw, it is possible to apply a larger torque than when a hole is directly provided in the feed screw.

  Moreover, it is good also as providing the eyebolt attached to the said slide guide.

  As described above, by providing the eyebolts, it is possible to easily attach and detach the hanger such as a hook.

Moreover, the method for lifting the blade ring according to the present invention is as follows.
A method of lifting a blade ring of a rotating machine using a hanging jig,
The hanging jig is
A slide guide,
A first arm having a first sliding portion slidably attached to the slide guide on one end side, and a first recess on the other end on which a protrusion provided on the inner shroud of the blade ring is hooked;
A second sliding portion that is slidably attached to the slide guide is provided on one end side, and a second recess is provided on the other end side on which a protrusion provided on the outer shroud of the blade ring is hooked. A second arm provided to face the arm;
A feed screw provided along the slide guide and screwed into a screw hole formed in at least one of the first arm and the second arm;
The blade ring lifting method is:
The at least one of the first arm and the second arm is moved along the slide guide by the rotation of the feed screw to adjust the distance between the first arm and the second arm, and Hooking the protrusions provided on the inner shroud and the outer shroud of the blade ring to the first recess of the first arm and the second recess of the second arm, respectively;
A step of lifting the blade ring in a state where the protrusions provided on the inner shroud and the outer shroud of the blade ring are hooked on the first recess and the second recess of the second arm, respectively. Prepare
It is characterized by that .

According to the above blade ring processing method, both the protrusions provided on the inner shroud and the outer shroud of the blade ring are hooked on the first recess of the first arm and the second recess of the second arm, respectively. Can be lifted. Thereby, a blade ring can be conveyed to a 1st machine tool.
Also, by lifting the wing ring directly with the first arm and the second arm, when lifting with a conventional wire rope, a board is put under the wing ring, or a rubber plate is placed between the wire rope and the wing ring. Can save time and effort and improve work efficiency.
Furthermore, since the amount of movement of the first arm and the second arm can be adjusted by rotating the feed screw, it is possible to lift the blade rings having different shapes and sizes.

Moreover, while processing either one of the inner peripheral surface of the inner shroud and the outer peripheral surface of the outer shroud of the blade ring with the first machine tool, the protrusion provided on the surface to be processed Cut and
The machined blade ring falls to the blade side as the outer peripheral surface of the inner shroud and the inner peripheral surface of the outer shroud move upward along the direction perpendicular to the radial direction of the blade ring, and the blade ring It is arranged so as to be inclined with respect to the direction orthogonal to the radial direction 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, and the pair of legs of the bifurcated portion A first contact member fixed to one of the first legs, 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, and the feed screw The second abutting member is moved by rotation of the feed screw of another suspension jig provided with a second abutting member fixed to an end portion close to the first leg of the pair of legs. The blade ring is lifted while pressing either the inner shroud or the outer shroud disposed therebetween against the first contact member with the second contact member, and the blade ring is transported to the second machine tool. It is good to do.

  According to the blade ring processing method, when the blade ring is lifted by bringing the first contact member into contact with either the outer peripheral surface of the inner shroud of the blade ring or the inner peripheral surface of the outer shroud, the outer periphery of the inner shroud The upper end portion of the surface or the upper end portion of the inner peripheral surface of the outer shroud is positioned above the first contact member beyond the blade side. Thereby, the blade ring can be lifted by the state where 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 is caught by the first contact member. Therefore, it is possible to lift the blade ring having no projections on the inner shroud and the outer shroud and to convey the blade ring to the second machine tool.

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

It is a front view which shows a part of suspension jig concerning the embodiment of the present invention in section. It is a side view which shows the hanging jig which concerns on embodiment of this invention. It is AA 'sectional drawing of FIG. It is a front view which shows the state which lifted the wing ring with the hanging jig. It is a B arrow view of FIG. It is C arrow line view of FIG. It is a perspective view which shows the state which lifted the wing ring with the hanging jig. It is a perspective view which shows the inverted blade ring. It is a front view which shows another hanging jig. It is a perspective view which shows the state which lifted the blade ring with the other hanging jig | tool. It is a front view which shows the other Example of a hanging jig. It is a figure which shows the method of lifting a blade ring with the conventional wire rope. It is a front view 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 part of a hanging jig according to an embodiment of the present invention in cross section. FIG. 2 is a side view showing the hanging jig according to the embodiment of the present invention.
As shown in FIG. 1 and FIG. 2, a hanging jig 2 for lifting a blade ring for a stationary blade of a compressor penetrates a pair of arms 10 and 20 disposed opposite to each other and a pair of arms 10 and 20. The slide guide 6 is provided, a feed screw 30 provided along the slide guide 6, and an eyebolt 8 attached to the upper surface of the slide guide 6.

  The first arm 10 of the pair of arms 10 and 20 has a first through hole 11 at one end and a first recess 13 at the other end where a projection provided on the inner shroud of the blade ring is caught. ing. Moreover, the 2nd arm 20 has the 2nd through-hole 21 in one end part, and has the 2nd recessed part 23 in which the projection part provided in the outer shroud of the wing ring is hooked in the other end part.

  Both the first recess 13 of the first arm 10 and the second recess 23 of the second arm 20 are through holes. In addition, the 1st recessed part 13 and the 2nd recessed part 23 are not limited to a through-hole, A hollow may be sufficient.

  The surface 14 of the first arm 10 that faces the second arm 20 is formed with a recess 15 that is recessed in a direction away from the second arm 20 at a position between the first recess 13 and the first through hole 11. Yes. Similarly to the first arm 10, the second arm 20 has a surface 24 facing the first arm 10 on the surface 24 between the second recess 23 and the second through hole 21. A recessed portion 25 that is recessed in a direction away from the first arm 10 is formed.

  The slide guide 6 is inserted through the first through hole 11 of the first arm 10 and the second through hole 21 of the second arm 20. The first arm 10 and the second arm 20 are slidable along the slide guide 6.

  The slide guide 6 has a prismatic shape and is provided with a screw hole 61 for screwing the eyebolt 8.

  The feed screw 30 is screwed into a first screw hole 12 and a second screw hole 22 formed in the first arm 10 and the second arm 20, respectively. The feed screw 30 includes a left screw portion 31 that is screwed into the first screw hole 12 of the first arm 10, a right screw portion 33 that is screwed into the second screw hole 22 of the second arm 20, and a left screw portion 31. And a different diameter portion 32 having a diameter smaller than that of the left screw portion 31 and the right screw portion 33.

  The distance between the first arm 10 and the second arm 20 can be adjusted by sliding the first arm 10 and the second arm 20 along the slide guide 6 by the rotation of the feed screw 30. Specifically, when the feed screw 30 is rotated counterclockwise with the first arm 10 viewed from the second arm 20 side, the first arm 10 and the second arm 20 move toward each other. . On the other hand, when the feed screw 30 is rotated clockwise, the first arm 10 and the second arm 20 are moved away from each other.

  In addition, caps 34 with holes are respectively connected to both ends of the feed screw 30 by pins 36. A hole may be formed at each end of the feed screw 30.

  A movement restricting portion 40 fitted to the different diameter portion 32 of the feed screw 30 is attached to the slide guide 6.

3 is a cross-sectional view taken along the line AA ′ of FIG. As shown in FIG. 3, the movement restricting portion 40 has a recess 42, and a disc-shaped protrusion 41 is provided on the upper surface of the movement restricting portion 40. The projection 41 is fitted in a positioning hole 62 formed in the slide guide 6 and is moved by a bolt 64 provided in a counterbore 63 (see FIG. 1) formed in the slide guide 6. 40 is fixed to the slide guide 6.
A different diameter portion 32 of the feed screw 30 is fitted in the recess 42 of the movement restricting portion 40, and the movement restricting portion 40 rotatably supports the different diameter portion 32 on the slide guide 6. The movement restricting portion 40 can restrict the movement of the feed screw 30 with respect to the slide guide 6 along the longitudinal direction of the slide guide 6.

FIG. 4 is a front view showing a state in which the pair of arms 10 and 20 are in contact with the blade ring. FIGS. 5 and 6 are views as seen from the arrow B and the arrow C in FIG. 4, respectively.
As shown in FIGS. 4 to 6, when the pair of arms 10 and 20 are brought into contact with the blade ring 50, hexagons are formed in the holes of the cap 34 connected to the end of the feed screw 30 on the second arm 20 side. By inserting a tool such as a bolt and rotating the feed screw 30 counterclockwise, the pair of arms 10 and 20 are moved toward each other. Then, the protrusions 58 and 58 provided on the inner peripheral surface 52 of the inner shroud 51 and the outer peripheral surface 57 of the outer shroud 55 are inserted into the recesses 13 and 23 of the first arm 10 and the second arm 20, respectively. . At this time, since the heights of the projections 58 and 58 provided on the shrouds 51 and 55 are different from each other, both the projections 58 and 58 may be inserted into the recesses 13 and 23.
Of the protrusions 58 and 58 provided on the outer shroud 55 and the inner shroud 51, the protrusion 58 of the outer shroud 55 provided at a lower position is the inner part of the second recess 23 of the second arm 20. You may arrange | position the 2nd arm 20 so that the surrounding lower surface 26 may be contacted. At this time, if the protrusion 58 of the inner shroud 51 provided at a high position is not in contact with the inner peripheral lower surface 16 of the first recess 13 of the first arm 10, it is inserted into the first recess 13. Good.
If the heights of the projections 58 and 58 provided on the shrouds 51 and 55 are the same, the projections 58 and 58 are respectively formed on the inner peripheral lower surface 16 of the first recess 13 and the second recess 23. It is desirable to adjust the height of the hanging jig 2 so as to contact the inner peripheral lower surface 26.

  Then, the first arm 10 and the second arm 20 are brought into contact with the inner peripheral surface 52 of the inner shroud 51 and the outer peripheral surface 57 of the outer shroud 55, respectively.

  Since the recesses 15 and 25 are formed in the mutually opposing surfaces 14 and 24 of the pair of arms 10 and 20, the inner peripheral surface 52 of the inner shroud 51 and the outer peripheral surface 57 of the outer shroud 55 are respectively formed in the recesses 13. , 23 abuts only on the peripheral portion. Accordingly, gaps S are formed between the first arm 10 and the inner peripheral surface 52 of the inner shroud 51 and between the second arm 20 and the outer peripheral surface 57 of the outer shroud 55.

  When the suspension jig 2 is raised, the projections 58 and 58 provided on the shrouds 51 and 55 are hooked on the first recess 13 and the second recess, respectively, so that the blade ring 50 can be lifted.

  Since the suspension jig 2 having the above-described configuration is a simple mechanism in which the pair of arms 10 and 20 are moved by the feed screw 30, the weight can be reduced and a person can carry it by hand.

  Next, a method for conveying the blade ring 50 to the machine tool for processing the blade ring 50 using the hanging jig 2 will be described.

First, an operator moves to the place where the blade ring 50 is placed with a plurality of hanging jigs 2. In addition, you may convey the hanging jig 2 in the state which suspended the hanging jig 2 on the lifting apparatuses, such as a crane.
Next, the hanging jigs 2 are attached to both ends of the divided arcuate blade ring 50, respectively.

FIG. 7 is a perspective view showing a state in which the blade ring 50 is lifted by the hanging jig 2.
As shown in FIG. 7, the suspension jig 2 is attached by rotating the feed screw 30 to move the pair of arms 10 and 20 toward each other, as described above, so that the inner periphery of the inner shroud 51 is moved. The protrusions 58 and 58 provided on the outer peripheral surface 57 of the surface 52 and the outer shroud 55 are respectively inserted into the recesses 13 and 23 of the first arm 10 and the second arm 20, respectively. The two arms 20 are brought into contact with the inner peripheral surface 52 of the inner shroud 51 and the outer peripheral surface 57 of the outer shroud 55, respectively.

  Next, a hook 70 of a lifting device such as a crane is hung on the eyebolt 8, and the protrusions 58 and 58 provided on the inner shroud 51 and the outer shroud 55 of the blade ring 50 are respectively connected to the first recess 13 of the first arm 10. And the blade ring 50 is lifted in a state of being hooked on the second recess 23 of the second arm 20.

When it is confirmed that the blade ring 50 is stable in the lifted state, the blade ring 50 is transported to the first machine tool.
In the first machine tool, the inner peripheral surface 52 of the inner shroud 51 is processed, and the protrusions 58 provided on the inner peripheral surface 52 are cut.

FIG. 8 is a perspective view showing the inverted blade ring 50.
As shown in FIG. 8, when the processing of the inner peripheral surface 52 is completed, the blade ring 50 is reversed.
The outer peripheral surface 53 of the inner shroud 51 of the inverted 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 inner shroud 51 and the outer shroud 55 Is inclined to the blade 54 side provided between the blade ring 50 and the blade ring 50. In the following description, the upper 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.

  Next, the inner shroud 51 of the blade ring 50 is gripped and lifted using another hanging jig. In the following, the structure of another suspension jig will be described first, and then a method for lifting the blade ring 50 using another suspension jig will be described.

FIG. 9 is a front view showing another hanging jig.
As shown in FIG. 9, another hanging jig 100 includes a jig main body 102 having a pair of legs 111 branched into two branches and a first contact fixed to one first leg 112 of the pair of legs 111. The contact member 104, a feed screw 108 that is screwed into a through screw hole 114 formed in the other second leg 113 of the pair of legs 111, and an end portion of the feed screw 108 near the first leg 112 are fixed. The second contact member 106 is provided.

  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 suspended portion 120 are formed in a portion protruding from the first leg 112 and an upper portion of the bifurcated portion 110.

  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.

  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. 10 is a perspective view showing a state in which the blade ring 50 is gripped by another hanging jig 100.
As shown in FIG. 10, when the inner shroud 51 of the blade ring 50 is gripped by the other suspension jig 100 having the above-described configuration, the first leg 112 is inserted between the inner shroud 51 and the outer shroud 55, Subsequently, the feed screw 108 is rotated clockwise by the handle 107 to move the second contact member 106 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 escape groove 122 is formed in the base portion 118 of the first leg 112, the inner shroud 51 and the bifurcated portion 110 do not interfere with each other.

  The other suspension jig 100 having the above-described configuration only needs to have a function of gripping either one of the inner shroud 51 and the outer shroud 55 of the blade ring 50 (details will be described later). Yes, it can be carried around by hand.

  Next, a method for lifting the blade ring 50 using another hanging jig 100 will be described.

  First, an operator moves to a place where the blade ring 50 is placed with a plurality of other hanging jigs 100. In addition, you may convey the other hanging jig | tool 100 in the state suspended by the crane etc.

Next, as shown in FIG. 10, other hanging jigs 100 are attached to both ends of the arc-shaped inner shroud 51, respectively.
As described above, the other suspension jigs 100 are attached by rotating the handle 107 so that the first contact member 104 and the second contact member 106 are moved to the outer peripheral surface 53 and the inner peripheral surface of the inner shroud 51, respectively. The blade ring 50 is held in contact with the blade 52.

  Further, the shackle 124 is attached to the suspension hole 121 of the jig body 102. At this time, the suspension hole 121 located immediately above the center of gravity of the blade ring 50 and the other suspension jig 100 is selected. That is, the suspension hole 121 for attaching the shackle 124 is selected according to the shape 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 other lifting jig 100 and the blade ring 50 are lifted. At this time, since the blade ring 50 is hung just above the center of gravity of the suspending jig 100 in the vertical direction, 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 second machine tool.

  In addition, although the case where the inner shroud 51 of the blade ring 50 was held and the blade ring 50 was lifted by the other lifting jig 100 was described, the present invention is not limited to the inner shroud 51, and the outer shroud 55 is held and lifted. It is also applicable to cases.

  As described above, according to the hanging jig 2 in the present embodiment, by rotating the feed screw 30 and moving the first arm 10 and the second arm 20 toward each other along the slide guide 6, The blade ring 50 can be lifted by hooking the projections 58 and 58 provided on the inner shroud 51 and the outer shroud 55 to the first recess 13 and the second recess 23, respectively.

  The left screw portion 31 of the feed screw 30 is screwed into the first screw hole 12 of the first arm 10, and the right screw portion 33 of the feed screw 30 is screwed into the second screw hole 22 of the second arm 20. By rotating the feed screw 30, the first arm 10 and the second arm 20 can be moved toward each other or moved away from each other.

  In addition, since the feed screw 30 has the movement restricting portion 40, the feed screw 30 does not move along the slide guide 6 when the feed screw 30 is rotated, and the first arm 10 and the second arm 30. The arm 20 can be reliably moved along the slide guide 6.

  Then, by lifting the blade ring 50 directly with the lifting jig 2, when lifting with the conventional wire rope, a board is put under the blade ring 50, or a rubber plate is interposed between the wire rope and the blade ring 50. Can save time and effort and improve work efficiency.

  Further, the recesses 15 and 25 are provided in the mutually opposing surfaces 14 and 24 of the pair of arms 10 and 20, respectively, so that a gap is provided between the lifted blade ring 50 and the arms 10 and 20. Since S is formed, interference between the blade ring 50 and the arms 10 and 20 can be prevented.

Since a hole is formed in the cap 34 connected to the end portion of the feed screw 30, the feed screw 30 can be easily rotated by engaging a tool such as a hexagonal bar wrench in the hole.
Further, by using the cap 34 having a diameter larger than the diameter of the feed screw 30, it is possible to apply a larger torque than when the feed screw 30 is directly provided with a hole.
Further, since the feed screw 30 is long, it is difficult to process a hole at the end of the feed screw 30, but a hole is easily provided at the end of the feed screw 30 by using a separate cap 34. be able to.

Since the eyebolt 8 is provided on the upper surface of the slide guide 6, the hook 70 can be easily attached and detached.
Furthermore, according to the processing method of the blade ring 50, the first recess 13 and the second recess 23 of the suspension jig 2 are respectively connected to the protrusions 58, 58 provided on the inner shroud 51 and the outer shroud 55 of the blade ring 50. The blade ring 50 can be lifted by being hooked on the blade, and the blade ring 50 can be conveyed to the first machine tool.

  Further, the blade ring 50 can be lifted by gripping the inner shroud 51 with the other lifting jig 100 after the blade ring 50 that has been processed by the first machine tool and has no protrusions 58 of the inner shroud 51. Thereby, the blade ring 50 machined by the first machine tool can be conveyed to the second machine tool.

  Next, another 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.

FIG. 11 is a front view showing another embodiment of the hanging jig.
As shown in FIG. 11, the hanging jig 80 includes an eyebolt 8, a slide guide 6, a pair of arms 82, and a feed screw 90.

  Of the pair of arms 82, the first arm 84 is fixed to the end of the slide guide 6 by welding or the like. A third recess 86 for supporting the end of the feed screw 90 is formed in the recess 15 of the first arm 84. A movement restricting portion 88 that is engaged with the end portion of the feed screw 30 is provided in the third recess 86.

  The feed screw 90 has a right-hand thread portion 92 that is screwed into the second screw hole 22 of the second arm 20 and a cylindrical portion 94 that is not formed with a screw. The cylindrical portion 94 on which no screw is formed is rotatably supported by a movement restricting portion 88 that is fitted in the third recess 86 and restricts the movement of the feed screw 90 in the axial direction. In this embodiment, a tapered roller bearing is used as the movement restricting portion 88. On the other hand, the right screw portion 92 of the feed screw 90 is screwed into the second screw hole 22 formed in the second arm 20.

The distance between the first arm 84 and the second arm 20 can be adjusted by sliding the second arm 20 along the slide guide 6 toward the first arm 84 by the rotation of the feed screw 90. . Specifically, when the feed screw 90 is rotated counterclockwise, the second arm 20 moves in a direction approaching the first arm 84. On the other hand, when the feed screw 90 is rotated clockwise, the second arm 20 moves away from the first arm 84.
According to the suspension jig 80, the cylindrical portion 94 of the feed screw 90 is supported by the movement restricting portion 88, so that the feed screw 90 moves along the slide guide 6 when the feed screw 90 is rotated. Therefore, the second arm 20 can be reliably moved along the slide guide 6.

2 Suspension jig 3 Plate 4 Rubber plate 5 Wire rope 6 Slide guide 8 Eye bolt 10 First arm 11 First through hole 12 First screw hole 13 First recess 14 Surface 15 Depression 16 Inner lower surface 20 of the first recess Second arm 21 Second through hole 22 Second screw hole 23 Second concave portion 24 Surface 25 Depressed portion 26 Inner lower surface 30 of second concave portion Feed screw 31 Left screw portion 32 Different diameter portion 33 Right screw portion 34 Cap 36 Pin 40 Movement restricting portion 41 Protruding portion 42 Recess 50 Blade ring 51 Inner shroud 52 Inner peripheral surface 53 Outer peripheral surface 54 Blade 55 Outer shroud 56 Inner peripheral surface 57 Outer peripheral surface 58 Protruding portion 59 Inclined end portion 61 Screw hole 62 Positioning hole 63 Counterbore Hole 64 Bolt 70 Hook 80 Suspension jig 82 Pair of arms 84 First arm 86 Third recess 88 Movement restricting portion 90 Feed screw 92 Right thread portion 94 Column portion 100 Suspending jig 102 jig main body 104 first abutting member 106 second abutting member 107 handle 108 feed screw 109 screw hole 110 fork part 111 pair of legs 112 first leg 113 second leg 114 through screw hole 115 screw hole 116 surface 117 surface 118 root portion 119 root portion 120 suspended portion 121 suspension hole 122 escape groove 124 shackle 200 suspension jig 201 frame 202 pair of arms 203 claw 204 driving means 205 feed screw 207 motor S clearance

Claims (9)

A hanging jig comprising a pair of hanging jig units for attaching a blade ring of a rotating machine to a hoisting device,
Each of the hanging jig units is
A slide guide,
A first arm having a first sliding portion slidably attached to the slide guide on one end side, and a first recess on the other end on which a protrusion provided on the inner shroud of the blade ring is hooked;
A second sliding portion that is slidably attached to the slide guide is provided on one end side, and a second recess is provided on the other end side on which a protrusion provided on the outer shroud of the blade ring is hooked. A second arm provided to face the arm;
A feed screw provided along the slide guide and screwed into a screw hole formed in at least one of the first arm and the second arm;
Each of the suspension jig units moves the at least one of the first arm and the second arm along the slide guide by the rotation of the feed screw, so that the first arm and the second arm Configured to adjust the distance between ,
The pair of suspension jig units are provided at positions different from each other in the circumferential direction of the blade ring so that the slide guides of the suspension jig units are along the radial direction of the blade ring. A hanging jig. The first sliding portion is a through hole formed on the one end side of the first arm and through which the slide guide passes,
The suspension jig according to claim 1, wherein the second sliding portion is a through hole formed on the one end side of the second arm and through which the slide guide passes.   The suspension jig according to claim 1, further comprising a movement restricting portion that restricts movement of the feed screw with respect to the slide guide along a longitudinal direction of the slide guide. The screw hole is formed in both the first arm and the second arm,
The feed screw is
A left-hand thread portion screwed into any one of the screw hole of the first arm and the screw hole of the second arm;
A right-hand thread portion screwed into the other of the screw hole of the first arm and the screw hole of the second arm;
Provided between the left-hand thread part and the right-hand thread, the left-hand thread part and the right-hand thread part have different diameter parts having different diameters,
2. The movement restricting portion has one end fixed to the slide guide and the other end fitted to the different diameter portion, and rotatably supports the different diameter portion on the slide guide. The hanging jig according to any one of? On the surface of the first arm that faces the second arm, a recess is formed that is recessed in a direction away from the second arm at a position between the first recess and the first through hole.
On the surface of the second arm facing the first arm, a recess is formed that is recessed in a direction away from the first arm at a position between the second recess and the second through hole. The hanging jig according to any one of claims 1 to 4, wherein:   The suspension jig according to any one of claims 1 to 5, wherein a hole is formed in an end portion of the feed screw.   The suspension jig according to claim 6, wherein the hole is formed in a cap connected to an end of the feed screw.   The suspension jig according to any one of claims 1 to 7, further comprising an eyebolt attached to the slide guide. A method of lifting a blade ring of a rotating machine using a hanging jig,
The hanging jig is
A slide guide,
A first arm having a first sliding portion slidably attached to the slide guide on one end side, and a first recess on the other end on which a protrusion provided on the inner shroud of the blade ring is hooked;
A second sliding portion that is slidably attached to the slide guide is provided on one end side, and a second recess is provided on the other end side on which a protrusion provided on the outer shroud of the blade ring is hooked. A second arm provided to face the arm;
A feed screw provided along the slide guide and screwed into a screw hole formed in at least one of the first arm and the second arm;
The blade ring lifting method is:
The at least one of the first arm and the second arm is moved along the slide guide by the rotation of the feed screw to adjust the distance between the first arm and the second arm, and Hooking the protrusions provided on the inner shroud and the outer shroud of the blade ring to the first recess of the first arm and the second recess of the second arm, respectively;
A step of lifting the blade ring in a state where the protrusions provided on the inner shroud and the outer shroud of the blade ring are hooked on the first recess and the second recess of the second arm, respectively. Prepare
A method of lifting a wing ring characterized by the above.

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