JP2000053370A - Support device for attaching/detaching heavy cargo - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change and adjust a hoist angle of a heavy cargo and facilitate positioning of it by back-and-forth moving a hoist member along a hoisting frame whose base end is fixed to a rotation disk supported on a base flange mounted to a heavy cargo and tip bulged toward the upper part of the heavy cargo. SOLUTION: When a unit of a rear side outer cylindrical body R whose end has an annular flange D in an attaching/detaching work of a combustor, a driving shaft 21 of a reduction gear 18 is rotated, and a hanging ring 17 is slid along a hanging frame 12 through an oscillation lever 20 and a connection rod 22. Thus, a base flange 1, a wheel 3, a rotation disk 6, and a base disk 11 are changed in attitude, and are coincided with a mounting angle of the cargo hanging side flange D. Then, an operator rotates the mounting base flange 1 for the rotation disk 6 side through the wheel 3. Thus, a position of a mounting hole of the base flange 1 is matched to a bolt mounting hole of the cargo hanging side flange D, and a connection bolt 2 is inserted into the both mounting holes to be screwed to them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support device for detaching and supporting a heavy object, and more particularly, to a gas turbine combustion device installed in a thermal power plant when the gas turbine combustion device is periodically maintained and inspected. It is used at the time of desorption work of a large number of combustors mounted radially on the inclined wall of the body of the device.

[0002]

2. Description of the Related Art Conventionally, in a thermal power plant that burns liquefied natural gas, it is necessary to maintain the initial performance of a gas turbine combustion device G used under severe conditions, and to prevent operation stoppage due to equipment failure. From a viewpoint, the periodic inspection is carried out.

[0003] As shown in the perspective view of FIG. 1 showing the installed state of this gas turbine combustion device G, a soundproof room (not shown).
The combustor X, which is an important target device, is installed sideways in a room of the gas turbine combustion device G as shown in the detailed view of the main part of FIG. Many of them are radially arranged and attached to the conical inclined wall surface T that protrudes.

[0004] Naturally, the combustor X is mainly assembled on the basis of a front outer cylinder body F and a rear outer cylinder body R taken out at the upper part of FIG. 1 and disassembled individually. Are assembled by various components as shown in an exploded state in the upper part of FIG.

However, among the members constituting the combustor X,
In the case of the constituent unit of the rear outer cylinder R, 2
It has a weight of about 50KG, and it goes down diagonally backward toward the center of the main body of the gas turbine combustion device G.
It is inserted and assembled in a degree of backward inclination. Also, in the case of the front outer cylinder F which is assembled on the front side of the rear outer cylinder R, the weight of the single unit is about 100 KG and its constituent unit is about 200 KG. It is assembled in a state of backward inclination.

[0006] Therefore, in order to remove these heavy objects, it is necessary to remove the component parts one by one, since the work efficiency is poor. Therefore, the unit of the rear outer cylinder R and the front outer cylinder F
It is necessary to remove these units separately and provide them for overhaul, replacement of parts, etc.

Therefore, conventionally, when removing the rear outer cylinder R or the front outer cylinder F, a belt sling or a chain is wound around the main body, and the belt sling or chain is lifted by a chain block or an electric hoist H. Removal work is performed by pulling it out to the near side and lifting it.

After the maintenance and inspection, the electric hoist H
And is pushed down while gradually lowering and facing the mounting opening K of the predetermined combustor X, or is pushed up while gradually pulling up.

At this time, considering the alignment between the mounting hole of the flange on the mounting position side and the flange hole on the heavy object side, the dropped heavy object is slightly lifted or lowered, and the hanging point is changed and adjusted. The combustor X is rotated slightly in a clockwise or counterclockwise direction, and the work of lifting and lowering the combustor X is repeated again, so that the mounting holes are aligned and assembled.

[0010]

However, in the slinging method using the belt sling or the chain, the front outer cylinder F or the rear outer cylinder R, which is a heavy object to be lifted (hereinafter also referred to as a suspended load). It is hard to put out the hanging core. Since the combustor X is attached to the inclined wall surface T and is inserted obliquely downward toward the inside of the main body as shown in FIG. 2, when removing or attaching the suspended load,
It is necessary to maintain and adjust the work of holding the suspended load at an angle substantially perpendicular to the inclined wall surface T by manpower by a large number of workers, which is a considerable labor. Also,
When attaching the combustor X to the original position again after the inspection and maintenance, it is necessary to remove and attach a work such as a great effort to align the mounting hole between the flange on the hanging side and the flange on the body side of the body. Has become.

[0011]

Therefore, in order to solve the above-mentioned problems, the present invention makes it possible to easily and variably adjust the suspension angle of a heavy object, and to facilitate the alignment during the mounting operation. In view of the above, a mounting base flange attached to a heavy object having a flange, a turntable rotatably supported on the base flange side, a base end fixed to the turntable side, and A lifting frame is provided, which is configured to variably adjust the hanging angle of the heavy object by moving the hanging member back and forth along the hanging frame. A supporting device for the vehicle.

According to the present invention, in addition to the above-described structure, a base plate attached to the rotary plate, a suspension frame projecting upward from the base plate toward the upper side of the heavy object, and a suspension frame attached to the base plate. A speed reducer, and a suspending member that is guided by the suspending frame and moves back and forth, connects the distal end of the connecting rod to the suspending member side, and connects the base end to the upper part of the swing lever, Provided is a supporting device for detaching and supporting a heavy object, wherein a base end of the swing lever is fixed to an output shaft of the speed reducer, and a drive shaft of the speed reducer is rotated.

According to a third aspect of the present invention, the configuration is slightly different from the first and second aspects of the present invention, and a mounting base flange which is mounted on a heavy object having a flange, and a rotating base flange. A rotating plate freely supported, a base frame attached to the rotating plate, a speed reducer attached to an equipment base of the base frame, a swing lever having a base end fixed to an output shaft of the speed reducer, A swing member provided at a front position of the swing lever is provided, and by rotating the drive shaft of the speed reducer, the angle of the swing lever is changed, and the hanging angle of the heavy object is variably adjusted. The present invention provides a heavy-weight detachable support device.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to a unit (hereinafter, simply referred to as a heavy load or a suspended load) of a rear outer cylinder R having an annular flange D at an end. A detachable jig for detachment, that is, a detachable support device (hereinafter, also referred to as the present device) S1 will be described with reference to the accompanying drawings in FIG. 3 to 6 show a state in which the device S1 is attached to a unit of the rear outer cylinder R in a horizontal state.

In FIG. 6, reference numeral 1 denotes an annular mounting base flange of the apparatus S1 which is attached to an annular flange D of a rear outer cylinder R and fixed on its outer periphery by a plurality of connecting bolts 2. Is done. Reference numeral 3 denotes a wheel fixed to an inner peripheral portion of the base flange 1 with a connecting bolt 4, and a guide groove 5 is formed in an annular shape on an inner peripheral surface thereof.

In the apparatus S1, the base flange 1 and the wheel 3 are assembled as separate members. However, the base flange 1 may be formed integrally with the base flange 1 and the guide groove 5 may be formed in the inner peripheral surface thereof. it can.

Reference numeral 6 denotes a rotary disk rotatably supported on the wheel 3. A roller support shaft 7 is provided at substantially equal intervals on the outer peripheral portion of the back surface of the rotary disk 6, and a guide fitted to the support shaft 7 is provided. A roller 8, specifically, a ball bearing is fitted into the guide groove 5, so that the wheel 3
Are rotatably supported. Conversely, the hole 3 and the base flange 1 are relatively rotatable with respect to the turntable 6.

Reference numeral 9 denotes a guide groove which is annularly recessed in the outer peripheral portion of the turntable 6, and 10 denotes a stopper for preventing the turntable 8 from coming off. The projection 10a at the inner position of the stopper 10 is fitted into the guide groove 9 to support the engagement. In FIG. 4, the opening 6a is formed inside the turntable 6 to reduce the weight of the device S1.

In FIG. 3 to FIG. 5, reference numeral 11 denotes a base plate attached to the upper half of the front surface of the turntable 6, and the upper portion of the base plate extends to the vertically upper portion of the outer diameter of the base flange 1. are doing. Reference numeral 12 denotes a suspension frame, which is formed substantially in parallel with a space left and right, and its base end is fitted into a concave portion 11a formed at the upper end of the base board 11 and fixed by welding. It overhangs in an arc shape toward the upper part of the rear outer cylinder R and projects. 12
Reference numeral a denotes an end frame, which is connected and fixed to the rear end of the suspension frame 12, and supports the later-described constituent members 17, 13, 14, and 15 that are slid and guided along the suspension frame 12 so as to be retained.

Reference numeral 13 denotes a connecting plate disposed at an inside position facing the hanging frame 12, supporting shafts 14 and 15 are inserted left and right at front and rear positions thereof, and both left and right end portions thereof are formed inside the facing surface of the hanging frame 12. It is engaged and supported by a guide groove 16 recessed in the side surface. Reference numeral 17 denotes a suspension ring (hereinafter, also referred to as a suspension member) inserted into the support shaft 15 on the rear side.

Reference numeral 18 denotes a speed reducer mounted on the surface of the base board 13, and 19 denotes an output shaft protruding from both left and right ends of the speed reducer 18. The output shaft 19 is provided with a base end of a swing lever 20. Fitted and fixed. Reference numeral 21 denotes a drive shaft protruding from the bottom of the speed reducer 18.
4 (shown in FIG. 11 to FIG. 13), or by using an operating tool such as a wrench (not shown) to rotate forward and reverse, and The lever 20 can swing back and forth.

Reference numeral 22 denotes a connecting rod which is juxtaposed at an inner position of the suspension frame 12 with a left-right space therebetween, and has a support shaft 23 whose base end is extended to the distal end of the swing lever 20.
The front end of the connecting rod 22 is inserted and supported by the support shaft 14 on the front side. Therefore, the connecting rod 22 is moved forward and backward by being pulled or pushed in accordance with the swing of the swing lever 20, and at the same time, the connecting plate 13, the support shafts 14, 15 and the suspension ring 1 are moved.
7 is slid and guided along the suspension frame 12,
Thus, the position of the suspension ring 17 is changed.

For example, in FIG. 3, when the suspension ring 17 is at the position and the swing lever 20 is at the position, the main body of the rear outer cylinder R to which the present apparatus S1 is attached is connected to the main body of FIG. As shown in FIG.

Similarly, when the position of the suspension ring 17 is at the position of the swing lever 20 and the position of the swing lever 20 is at the position, the main body of the rear outer cylinder R to which the present apparatus S1 is attached is as shown in FIG. Then, it is lifted with the tilt angle balanced to about 13 degrees.

When the suspension ring 17 is at the position and the swinging lever 20 is at the position, the main body of the rear outer cylinder R to which the present device S1 is attached as shown in FIG. , With the forward inclination angle being balanced to about 13 degrees.

It should be noted that the position of the suspension ring 17 is
Is located at the position, the device S1 (the rear outer cylinder R
), That is, the base flange 1, the wheel 3, the turntable 5, and the like are suspended in a substantially vertical balance.

A procedure for removing the rear outer cylinder R using the present apparatus S1 after removing the front outer cylinder F will be described below.

Prior to that, a hoist-type bridge-type crane C as shown in FIG.
Or a hoist type overhead crane (not shown) is installed. Needless to say, if the crane C is already installed in the soundproof room of the gas turbine combustion device G from the beginning, there is no necessity.

The electric hoist H of the crane C
Is operated, the hook is hung on the suspension ring 17 of the present apparatus S1, and the electric hoist H is wound up and traversed to move the present apparatus S1 to a position vertically above the predetermined combustor X. Let it.

Next, by rotating the drive shaft 21 of the speed reducer 18 in either the forward or reverse direction, the swing lever 20 is rotated.
The suspension ring 17 is slidably guided along the suspension frame 12 via the connecting rod 22 and is moved in one of the front and rear directions. As a result, the base flange 1, the wheel 3, the turntable 6, and the base board 11
And the like, as shown in FIG. 9 and FIG.
By changing the posture to the forwardly inclined state, the mounting angle of the rear outer cylindrical body R substantially matches the mounting angle of the hanging-side flange D.

Then, the electric hoist H is operated,
The mounting base flange 1 of the present device S1 is substantially attached to the hanging load side flange D of the rear outer cylindrical body R, and the operator attaches the mounting base to the turntable 6 via the wheel 3. The flange 1 is rotated. Thereby, the position of the mounting hole of the base flange 1 is made to match the position of the mounting hole of the base flange 1 with the bolt mounting hole of the hanging-side flange D, and the connecting bolt 2 is inserted and screwed to connect the rear outer cylindrical body R to the device S1. Attach and fix.

Then, the electric hoist H is again operated and gradually moved in a direction substantially on the same line as the insertion angle of the rear outer cylinder R, so that the rear outer cylinder R is opened. Remove while pulling from K.

Next, in the process of moving the electric hoist H sideways and facing a pedestal frame (not shown) provided on a separate transport vehicle (not shown), the drive shaft 21 of the speed reducer 18 is again turned on.
Is rotated in the opposite direction to that described above. As a result, the main body of the rear outer cylinder R including the device S1 is changed to a horizontal posture as shown in FIG. 3, and then the rear outer cylinder R is installed on the pedestal frame, and the connecting bolt is connected. 2 to remove this device S1
Disconnect.

By repeating the above-mentioned method, all the combustors X are removed, and are subjected to periodic inspections such as disassembly and repair and replacement of parts.

In the case of the three combustors X shown in the zone B in FIG. 8 below the main body of the gas turbine combustion device G, the main body and the installation floor of the combustion device G are used. Is limited, the rear outer cylinder R is suspended at two points by the electric hoist H, and the rear outer cylinder R pulled out from the body of the main body is pushed out to the side and lifted. In the case of the combustor X in the A zone other than the above, the single-point suspension method is used.
It is removed by the procedure described above.

To mount the rear outer cylinder R at the predetermined position again after the completion of the periodic inspection, the procedure is substantially the reverse of that described above.

[0036]

Next, a second embodiment of the present invention shown in FIGS. 11 to 16 will be described. This is a detachable support device S2 developed before the present device S1 shown in the above-described first embodiment. Therefore, in describing this second embodiment, the first embodiment and the second embodiment will be described. About the same component, the same code | symbol is attached | subjected and the detailed description is abbreviate | omitted.

Numeral 25 designates a rotating disk having a smooth outer peripheral surface. The rotating disk 25 has a stopper 26 fixed to the outer peripheral position of the front surface of the wheel 3 at substantially equal intervals, and a projection 26 formed at an inner end thereof.
The rotation disk 25 is prevented from falling off by a.

Reference numeral 27 denotes a mast-shaped base frame, the lower half of which is fixed to the front surface of the turntable 25, and an equipment stand 28 is formed so as to extend from the upper end thereof to the rear, and is decelerated to the equipment stand 28. Machine 18 is installed.

Reference numeral 29 denotes a swinging lever arranged side by side at an interval on the left and right. The base end of the swinging lever is fixed to the output shaft 19 of the speed reducer 18, and the fixed plate 31 of the suspension ring 30 is fixed to the latter half thereof. The supporting shafts 32 and 33 are fixed to the front and rear ends of the supporting shafts. Numeral 34 denotes side suspension rings projecting from both left and right ends of the support shaft 33 on the rear side, and is used when suspending two points of the combustor X in the zone B shown in FIG.

The present apparatus S shown in the second embodiment described above
When the rear outer cylinder R is to be removed by using the electric hoist H, the apparatus S2 suspended by the electric hoist H
, And is suspended to the height position of the combustor X. Then, the handle 24 attached to the drive shaft 21 of the speed reducer 18 is rotated in either the forward or reverse direction.

As a result, the swing lever 29 moves up and down,
The inclination angle of the flange D of the rear outer tubular body R is made substantially the same by bringing the device S2 into the backward inclined state or changing the posture to the forward inclined state as shown in FIGS.

Then, while the electric hoist H is being lifted, the base flange 1 of the apparatus S2 is substantially attached to the flange D of the rear outer cylinder R, and the wheel 3 is attached to the turntable 25. By rotating the base flange 1 side through the connector, the bolt through holes of both flanges D and 1 are matched, and the connecting bolt 2 is inserted and fixed.

Again, by moving the electric hoist H up and down while gradually moving it forward, the electric hoist H is gradually pulled out from the opening K, moved sideways, and separately mounted on a carriage (not shown). The frame is set horizontally as shown in FIG. 11, the connecting bolt 2 is removed, and the frame is used for subsequent disassembly and inspection and repair work.

In the case of the above-described devices S1 and S2, the case where the device is attached to the end flange D of the rear outer tubular body R of the combustor X and provided for the demounting operation has been described. In the case of the front outer cylinder body F having a flange,
It can also be used for desorption work in a similar procedure.

[0045]

As described above, the present invention provides a mounting base flange which is mounted on a heavy object having a flange,
A turntable rotatably supported on the base flange side,
A base frame is fixed to the turntable side, a front end portion is provided to extend upward from the heavy object, and a hanging frame is provided. By moving the hanging member back and forth along the hanging frame, the heavy object The hanging angle of the heavy object is configured to be variably adjusted, so that the hanging angle of the heavy object can be easily and variably adjusted while it is in a hung state. In this case, various effects such as greatly improving the workability at the time of attaching and detaching a heavy object such as a combustor are brought about.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire gas turbine combustion apparatus, showing a state in which a combustor is separated into a front outer cylinder and a rear outer cylinder, and their constituent members are disassembled.

FIG. 2 is a longitudinal sectional view showing an attached state of a combustor.

FIG. 3 is a partially cutaway side view showing a state in which the apparatus is mounted on a flange of a rear outer cylinder.

FIG. 4 is a front view of the same.

FIG. 5 is a plan view of the same.

FIG. 6 is a vertical cross-sectional side view showing a state in which components including a base flange, a wheel, and a turntable in the present apparatus are mounted on a mounting flange of a rear outer cylinder.

FIG. 7 is a perspective view showing a hoist-type bridge crane installed in a combustion device and a combustor lifted by the electric hoist.

FIG. 8 is a diagram showing an A zone in which one combustor is suspended and a B zone in which two combustors are suspended and extruded sideways and lifted.

FIG. 9 is a side view showing a state in which the present apparatus is attached to a combustor in the A zone and suspended.

FIG. 10 is a side view showing a state in which the apparatus is mounted on a combustor in a zone B and lifted.

FIG. 11 is a partially cutaway side view showing a second example of the present apparatus.

FIG. 12 is a front view of the same.

FIG. 13 is a plan view of the same.

FIG. 14 is a longitudinal sectional view showing a mounting state of a flange portion.

FIG. 15 is a side view showing a state in which the present apparatus is attached to and lifted from the combustor in the A zone.

FIG. 16 is a side view showing a state where the present apparatus is attached to a combustor in a B zone and is lifted.

[Explanation of symbols]

 G Gas turbine combustion device X Combustor T Inclined wall F Front outer cylinder R Rear outer cylinder H Electric hoist K Opening D Suspension side flange S1, S2 This device C Crane 1 Mounting base flange 2, 4 Connecting bolt DESCRIPTION OF SYMBOLS 3 Wheel 5, 9, 16 Guide groove 6, 25 Rotating disk 6a Opening 7 Roller support shaft 8 Guide roller 10, 26 Stopper stopper 10a Depression 11 Base plate 12 Suspension frame 12a End frame 13 Connection plate 14, 15, 23 , 32, 33 Support shaft 17, 30, 34 Suspension ring (suspension member) 18 Reducer 19 Output shaft 20, 29 Swing lever 21 Drive shaft 22 Connecting rod 24 Handle 27 Base frame 28 Equipment stand 31 Fixed plate

Claims (3)

[Claims] 1. A mounting base flange to be attached to a heavy object having a flange, a turntable rotatably supported on the base flange side, a base end fixed to the turntable side, and a distal end weighted. A weight that comprises a hanging frame that extends upwardly of the object, and that is configured to variably adjust the hanging angle of the heavy object by moving the hanging member back and forth along the hanging frame. A device for supporting the removal of objects. 2. A base plate attached to a rotary plate, a suspension frame extending from the base plate upward of a heavy object, a speed reducer attached to the base plate, and guided by the suspension frame. And a suspension member that moves back and forth, and connects the distal end of the connecting rod to the suspension member side,
2. The device according to claim 1, wherein the base end is connected to an upper portion of the swing lever, the base end of the swing lever is fixed to an output shaft of the speed reducer, and a drive shaft of the speed reducer is rotated. A support device for detaching and mounting a heavy object according to item 1. 3. A mounting base flange to be mounted on a heavy object having a flange, a turntable rotatably supported on the base flange side, a base frame mounted on the turntable, and an equipment base for the base frame. And a swinging lever having a base end fixed to the output shaft of the speed reducer, and a suspension member provided at a front position of the swinging lever, and a drive shaft of the speed reducer is provided. A device for detaching and supporting a heavy object, characterized in that the angle of the swing lever is changed by a rotating operation, and the hanging angle of the heavy object is variably adjusted.