JP3418346B2 - Detachable support device for heavy objects - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting and removing heavy objects, and more particularly, to a gas turbine combustion device installed in a thermal power plant when the gas turbine combustion device is regularly maintained and inspected. It is used during desorption work of a large number of combustors radially arranged and attached to the inclined wall surface of the main body of the device.

[0002]

2. Description of the Related Art Conventionally, in a thermal power plant that burns liquefied natural gas, the initial performance of a gas turbine combustion apparatus G used under severe conditions is maintained, and operation stop due to equipment failure is prevented. From the point of view, the periodic inspection is carried out.

This gas turbine combustion apparatus G has a soundproof chamber (not shown) as shown in the perspective view of FIG.
The combustor X, which is installed and installed sideways in the room of the gas turbine, is an important target device of the combustor X, as shown in the detailed view of the main part of FIG. 1 and FIG. A large number of them are radially arranged and attached to the conical inclined wall surface T protruding to the side.

Of course, the combustor X is mainly assembled with two bodies, a front outer cylindrical body F and a rear outer cylindrical body R taken out in the upper part of FIG. 1, as a base, and when they are individually disassembled. 1 is assembled by various constituent members as shown in an exploded state in the upper portion of FIG.

However, among the members constituting the combustor X,
In the case of the constituent unit of the rear outer tubular body R, 2
It weighs about 50 KG, and it goes down toward the center of the main body of the gas turbine combustion system G diagonally 13
It is assembled by inserting it in a backward tilted state. Further, also in the case of the front outer cylindrical body F assembled to the front side of the rear outer cylindrical body R, the single unit has a weight of about 100 KG, and its constituent unit has a weight of about 200 KG, and also the diagonal rear descent is 13 degrees. It is mounted in a tilted state.

Therefore, in order to remove these heavy objects, if the component parts are removed one by one, the work efficiency is lacking. Therefore, the unit of the rear outer cylinder R and the front outer cylinder F are removed.
It is necessary to remove each unit separately for disassembly and inspection and parts replacement.

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 body of the main body, and it is lifted by a chain block, an electric hoist H, or the like. Removal work is performed by pulling it toward you and lifting it.

After the maintenance and inspection, the electric hoist H is again used.
It is mounted by being lifted up and facing the mounting opening K of the predetermined combustor X and gradually being pushed in while being dropped, or being gradually pulled up and pushed in.

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

[0010]

However, in the sling system using the belt sling or the chain, the front outer cylinder F and the rear outer cylinder R, which are heavy objects to be lifted (hereinafter also referred to as suspended loads), are used. It is difficult to get the hanging core of. , The combustor X is attached to the inclined wall surface T, and as shown in FIG. 2, since it is inserted obliquely rearward and downward toward the inside of the main body, when removing or attaching the suspended load,
The work of holding the suspended load at an angle substantially orthogonal to the inclined wall surface T needs to be manually maintained and adjusted by the force of a large number of workers, which is a considerable amount of hard work. Also,
When attaching the combustor X after inspection and maintenance to the original position again, it is necessary to carry out desorption work such as requiring a great deal of work for aligning the mounting holes of the flange on the suspended load side with the flange on the body barrel side. Has become.

[0011]

In order to solve the above-mentioned problems, a heavy object attachment / detachment support device according to the present invention is designed so that a heavy object is attached to a mounting surface of a mounting base which is inclined at a predetermined angle from a vertical surface. In order to facilitate and speed up the operation of aligning the position of the bolt holes for mounting, orienting the heavy object suspended on the hoist in the direction orthogonal to the mounting surface when detaching / attaching in the orthogonal direction. In addition, it is used by temporarily mounting it on a heavy object, and it has a mounting base flange for connecting to a connecting flange provided on the heavy object, and a rotary disk that is concentrically assembled to the mounting base flange. , A suspension frame having its base end side fixed to a turntable, and a tip portion projecting upward of a heavy object, and a suspension member assembled to the suspension frame so as to be movable along its longitudinal direction. And the tilt angle of the suspended heavy object Characterized in that the manner be adjusted by moving the position of the hanging member.

The heavy object attachment / detachment support device according to the present invention includes a base plate attached to the rotating plate, the suspension frame projecting upward from the base plate and attached to the base plate. And a suspension member that moves back and forth while being guided by a suspension frame, connecting the tip of the connecting rod to the suspension member side, and connecting the base end to the upper part of the swing lever. Another feature is that the base end of the rocking lever is fixed to the output shaft of the reduction gear, and the drive shaft of the reduction gear is rotated.

Further, the heavy object attachment / detachment support device according to the present invention is provided with a base flange for attachment which is attached to a heavy object provided with a flange, a rotary disk which is rotatably supported on the base flange side, and a rotary disk. Base frame,
The reduction gear mounted on the equipment stand of the base frame, the swing lever having the base end fixed to the output shaft of the reduction gear, and the suspension member provided at the front position of the swing lever are provided. It is also characterized in that the angle of the swing lever is changed by rotatably operating the drive shaft to variably adjust the hanging angle of the heavy object.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to a unit of a rear outer cylindrical body R having an annular flange D at its end (hereinafter, also simply referred to as a heavy load or a suspended load). A detachment jig for detachment, that is, a detachment support device (hereinafter, also referred to as the present device) S1 will be described with reference to the accompanying drawings starting from FIG. 3 to 6, the apparatus S1 is attached to the unit of the rear outer cylindrical body R in the horizontal state.

In FIG. 6, reference numeral 1 denotes an annular mounting base flange of the present apparatus S1, which is fitted to an annular flange D of the rear outer cylindrical body R and fixed on its outer periphery by a plurality of connecting bolts 2. To be done. Reference numeral 3 denotes a wheel fixed to the inner peripheral portion of the base flange 1 by a connecting bolt 4, and a guide groove 5 is annularly provided in the inner peripheral surface thereof.

In the present device S1, the base flange 1 and the wheel 3 are assembled as separate members, but they may be integrally formed as the base flange 1 and the guide groove 5 may be recessed on the inner peripheral surface thereof. it can.

Reference numeral 6 denotes a rotary disk which is rotatably supported by a wheel 3, and roller support shafts 7 are arranged on the outer periphery of the back surface of the rotary disk 6 at substantially equal intervals, and guides fitted to the support shaft 7 are provided. A roller 8, specifically, a ball bearing is fitted into the guide groove 5 so that the rotary disk 6 is rotated with respect to the wheel 3.
Is rotatably supported. On the contrary, the hole 3 and the base flange 1 are rotatable relative to the turntable 6.

Reference numeral 9 is a guide groove annularly provided on the outer peripheral portion of the rotary disk 6, and 10 is a stopper for preventing the rotary disk 8 from coming off. The convex portion 10a at the inner position of the stopper 10 is fitted into the guide groove 9 to be engaged and supported. In addition, in FIG. 4, the opening 6a is formed inside the turntable 6 for the purpose of reducing the weight of the device S1.

In FIGS. 3 to 5, reference numeral 11 denotes a base plate attached to the upper half of the front surface of the rotary plate 6, and the upper part of the base plate is extended to the vertically upper part of the outer diameter of the base flange 1. is doing. Reference numeral 12 denotes a suspension frame, which is formed substantially parallel to each other with a space left and right. The base end of the suspension frame is fitted into a recess 11a formed in the upper end of the base board 11 and fixed by welding. The rear outer cylindrical body R is overhanged in an arc shape and protrudes toward the upper portion. 12
Reference numeral a denotes an end frame, which is connected and fixed to the rear end portion of the suspension frame 12 and supports and prevents constituent members 17, 13, 14, 15 described later that are slide-guided along the suspension frame 12 from coming off.

Reference numeral 13 denotes a connecting plate disposed at a position facing the inside of the suspension frame 12, and supporting shafts 14 and 15 are laterally provided at front and rear positions thereof, and both left and right ends thereof are opposed to the suspension frame 12. It engages with and is supported by a guide groove 16 provided on the side surface. Reference numeral 17 denotes a suspension ring (hereinafter also referred to as a suspension member) fitted and inserted into the support shaft 15 on the rear side.

Reference numeral 18 is a speed reducer mounted on the surface of the base board 13, and 19 is an output shaft projecting from the left and right ends of the speed reducer 18. The output shaft 19 is provided with the base end of the swing lever 20. It is fitted and fixed. Reference numeral 21 denotes a drive shaft projectingly provided on the bottom of the speed reducer 18, and the drive shaft 21 is manually rotated by the handle 2
4 (shown in FIGS. 11 to 13), or swings through the speed reducer 18 by rotating forward or backward using an operating tool such as a simple spanner (not shown). The lever 20 is swingable back and forth.

Reference numeral 22 denotes a connecting rod that is arranged inside the suspension frame 12 side by side at a left-right interval, and has a base end portion that extends over the tip end portion of the swing lever 20 and a support shaft 23.
The front end portion of the connecting rod 22 is inserted into and supported by the support shaft 14 on the front side. Therefore, the connecting rod 22 is moved back and forth by being pulled or pushed as the swing lever 20 swings, and at the same time, the connecting plate 13, the support shafts 14 and 15, and the suspension ring 1 are moved.
7 is slide-guided along the suspension frame 12,
As a result, the position of the suspension ring 17 is changed.

For example, in FIG. 3, when the suspension ring 17 is in the position and the swing lever 20 is in the position, the main body of the rear outer cylindrical body R to which the device S1 is attached is shown in FIG. As shown in, it is lifted while being balanced in a substantially horizontal state.

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

When the position of the suspension ring 17 is at and the position of the swing lever 20 is at, the main body of the rear outer cylindrical body R to which the device S1 is attached is as shown in FIG. , Its front tilt angle is balanced to about 13 degrees and it is hung up.

Incidentally, the position of the suspension ring 17 is set so that the lever 20
When the position is in the position, the device S1 (the rear outer cylindrical body R
(Excluding the above), that is, the base flange 1, the wheel 3, the turntable 5 and the like are lifted while being balanced in a substantially vertical state.

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

Prior to that, a hoist type bridge crane C as shown in FIG.
Or install a hoist type overhead crane (not shown). Of course, when the crane C is already installed in the soundproof room of the gas turbine combustion apparatus G from the beginning, this is not necessary.

Therefore, the electric hoist H of the crane C is used.
Is activated, the hook is hung on the suspension ring 17 of the device S1, and the electric hoist H is wound up and moved laterally to move the device S1 to a position vertically above the predetermined combustor X. Let

Next, the drive shaft 21 of the speed reducer 18 is rotated in either the forward or reverse direction to swing the swing lever 20.
The suspension ring 17 is slide-guided along the suspension frame 12 via the connecting rod 22 and the support rod 22, and is moved in either the front or rear direction. As a result, the base flange 1, the wheel 3, the rotary disk 6, and the base disk 11 in the present device S1.
And the like, as shown in FIG. 9 and FIG.
By changing the posture to the forward tilted state, the mounting angle of the hanging side flange D of the rear outer cylindrical body R is substantially matched.

Then, the electric hoist H is operated,
The mounting base flange 1 of the present device S1 is almost attached to the hanging side flange D of the rear outer cylindrical body R, and the worker mounts the wheel base 3 on the rotating base 6 side to mount the mounting base. The flange 1 is rotated. As a result, the position of the mounting hole of the base flange 1 is aligned with the bolt mounting hole of the hanging side flange D, and the connecting bolt 2 is inserted and screwed, whereby the rear outer cylindrical body R is attached to the device S1. Fix together.

Then, the electric hoist H is again operated to gradually move in a direction substantially on the same line as the insertion angle of the rear outer cylindrical body R, whereby the rear outer cylindrical body R is opened. Pull out from K.

Next, in the process of moving the electric hoist H laterally to face a pedestal frame (not shown) separately provided on a carriage (not shown), the drive shaft 21 of the speed reducer 18 is again provided.
Is rotated in the opposite direction to the above. As a result, the main body of the rear outer tubular body R including the device S1 is changed to the horizontal posture as shown in FIG. 3, and then the rear outer tubular body R is installed on the pedestal frame and the connecting bolt is attached. This device S1 by removing 2
Disconnect.

By repeating the above-mentioned method, all the combustors X are removed and used for periodical inspection such as disassembly and repair and parts replacement.

In the case of the three combustors X on the lower side of the main body of the gas turbine combustion apparatus G shown in zone B of FIG. 8, the main body and the installation floor of the combustion apparatus G are installed. Since the space between and is limited, the rear outer cylindrical body R is suspended at two points by the electric hoist H, and the rear outer cylindrical body R pulled out from the main body is pushed out to the side and pulled up. In the case of the combustor X in zone A other than the above, the one-point suspension system,
It is removed by the procedure described above.

In order to attach the rear outer cylinder R after the periodical inspection to the predetermined position again, a procedure substantially opposite to the above is carried out.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION 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 first embodiment described above, and therefore, in explaining the second embodiment, the first embodiment and the second embodiment will be described. About the same component, the same reference numeral is given and the detailed description thereof is omitted.

Reference numeral 25 is a turntable having an outer peripheral surface as a smooth surface, and retaining stoppers 26 are fixed to the outer peripheral position of the front surface of the wheel 3 at substantially equal intervals, and projections 26 formed on the inner end portion thereof.
The turntable 25 is prevented from coming 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 base 28 is formed so as to project from the upper end toward the rear portion, and the equipment base 28 is decelerated. The machine 18 is attached.

Reference numeral 29 is a rocking lever which is arranged side by side with a space left and right, and the base end portion of which is fixed to the output shaft 19 of the speed reducer 18, and the fixed plate 31 of the suspension ring 30 is attached to the latter half portion thereof. The support shafts 32 and 33 are fixed through the front and rear ends thereof. Reference numeral 34 is a side suspension ring projecting from the left and right ends of the rear side support shaft 33, and is used when suspending the combustor X in the B zone shown in FIG. 8 at two points.

This device S shown in the second embodiment described above.
2 is used to remove the rear outer cylinder R, the device S2 hung by the electric hoist H is installed in a predetermined combustor X.
To the height position of the combustor X, and then the handle 24 attached to the drive shaft 21 of the speed reducer 18 is rotated in either forward or reverse direction.

As a result, the swing lever 29 moves up and down,
As shown in FIG. 15 and FIG. 16, the present device S2 is tilted backward or the posture is changed forward so that the tilt angle of the flange D of the rear outer tubular body R substantially matches.

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

Again, by gradually moving the electric hoist H upward and downward while gradually moving it forward, the electric hoist H is gradually pulled out and taken out from the opening K, and moved laterally to be separately installed on a carriage (not shown). It is installed horizontally in the frame as shown in FIG. 11, the connecting bolt 2 is removed, and it is used for the subsequent disassembly and inspection and repair work.

In the case of the present devices S1 and S2 described above, the case where they are attached to the end flange D of the rear outer cylindrical body R of the combustor X for desorption work has been described. Also in the case of the front outer cylinder body F provided with 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 provided with a flange,
A turntable rotatably supported on the base flange side,
By fixing the base end portion to the turntable side, the tip end portion is projected upward of the heavy object, and a suspending frame is provided, and by moving the suspending member back and forth along the suspending frame, the heavy object concerned Since the device for supporting and removing heavy objects is configured to variably adjust the hanging angle of, it is possible to easily variably adjust the hanging angle of heavy objects while it is being hung. By facilitating the alignment at the position 1), various effects such as dramatically improving the workability at the time of attaching and detaching a heavy object such as a combustor are brought about.

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire gas turbine combustor and showing a state in which a combustor of the combustor is separated into a front outer cylinder and a rear outer cylinder, and those constituent members are disassembled.

FIG. 2 is a vertical cross-sectional view showing a mounted state of a combustor.

FIG. 3 is a partially cutaway side view showing a state in which the present apparatus is attached to a flange of a rear outer cylindrical body.

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 constituent members including a base flange, a wheel, and a turntable of the present device are attached to 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 an electric hoist.

FIG. 8 is a diagram showing an A zone in which one combustor is hung, and a B zone in which two combustors are hung and pushed laterally to be 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 lifted.

FIG. 10 is a side view showing a state in which the present apparatus is attached to a combustor in a B zone and lifted.

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

FIG. 12 is a front view of the same.

FIG. 13 is a plan view of the same.

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

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

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

[Explanation of symbols]

G gas turbine combustor X combustor T inclined wall F front outer cylinder R Rear outer cylinder H electric hoist K opening D Hanging side flange S1, S2 This device C crane 1 Base flange for mounting 2, 4 connecting bolt 3 wheels 5, 9, 16 guide groove 6, 25 turntable 6a opening 7 Roller support shaft 8 guide rollers 10, 26 Stop stopper 10a recess 11 base board 12 Suspended 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 axis 22 Connecting rod 24 handles 27 base frame 28 equipment stand 31 Fixed board

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-10-196402 (JP, A) Actual development Sho 53-52573 (JP, U) Actual development Sho 62-5179 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B66C 13/08

Claims (3)

(57) [Claims] 1. A heavy object suspended in a hoist is attached to a mounting surface of a mounting base, which is inclined at a predetermined angle from a vertical surface, when the heavy object is attached / detached to / from the mounting surface. It is used by temporarily attaching it to a heavy object to make it easier and quicker to align the bolt holes for mounting and align the positions of the mounting bolt holes. The mounting base flange for connecting, the rotary disc that is concentrically assembled to the mounting base flange, the base end side of the rotary disc fixed to the rotary disc, and the tip end overhangs the heavy object. The suspension frame is provided with a suspension member and a suspension member that is attached to the suspension frame so as to be movable along the longitudinal direction of the suspension frame. A heavy object characterized by being adjustable Desorption supporting device. 2. A base plate attached to the rotary plate, the suspension frame projecting upward from the base disc, and a speed reducer attached to the base disc. The suspension frame is guided by the suspension frame. With the suspension member that moves back and forth, the tip of the connecting rod is connected to the suspension member side, the base end of the connection rod is connected to the upper part of the swing lever, and the base end of the swing lever is output from the speed reducer. The heavy article attachment / detachment support device according to claim 1, wherein the heavy article attachment / detachment device is fixed to the shaft and the drive shaft of the reduction gear is rotated. 3. A base flange for mounting, which is mounted on a heavy object equipped with a flange, a turntable rotatably supported on the base flange side, a base frame attached to the turntable, and an equipment base of the base frame. A reduction gear, a swing lever whose base end is fixed to the output shaft of the reduction gear, and a suspending member provided at the front position of the swing lever, for rotating the drive shaft of the reduction gear. According to the present invention, the device for supporting attachment / detachment of heavy goods, characterized in that the angle of the swing lever is changed to variably adjust the hanging angle of heavy goods.