JPS5937512Y2 - Scaffolding device inside a spherical tank - Google Patents

Description

[Detailed description of the invention] The present invention relates to a scaffolding device inside a spherical tank, in particular, it is easy to attach and assemble the scaffolding members, it is convenient to carry in and out of the tank, and it is also convenient for painting, welding, welding inspection, etc. This invention relates to a rotatable scaffolding device that allows easy work.

Traditionally, spherical tanks have been widely used to store liquefied natural gas, etc., but they consist of many spherical shell-shaped plates joined together by welding, etc. No reinforcing members are attached, and only the piping, its supporting members, and a framework for installing the stairs are provided.

Therefore, when performing work such as painting, welding, and welding inspection inside the above-mentioned spherical tank, logs and scaffolding boards were assembled each time using grid lines so that work could be done on the entire inside of the tank. It is an economy, and logs, scaffolding boards change over time,
It was difficult to maintain performance depending on the storage conditions, there were concerns about safety, and because the material was long, there were many problems in transporting and transporting it.

The present invention aims to reduce the size of the component parts of the scaffolding device so that the scaffolding device can be easily carried in and out, and to facilitate the assembly work.The assembled scaffolding device is safe even for repeated use, and An object of the present invention is to provide a novel scaffolding device in a spherical tank that is convenient to use during work.

In order to achieve that purpose, the present invention provides support members at mutually opposing positions within a spherical tank, and a collapsible and disassembleable column serving as a ladder is vertically and rotatably attached to the support members. A removable horizontal beam on which a floor plate is placed horizontally is attached to the pillar, and this is held suspended by the pillar by a press, and the pillar is held suspended by the upper support member.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a part of a spherical tank 1 cut away to show the entire scaffolding device for a spherical tank according to the present invention.

At the upper and lower parts of this spherical tank 1, at mutually opposing positions,
Upper support 2 and lower support 3 as supporting members
are attached so as to fit into each fitting hole 4°5.

As shown in the cutaway perspective view of FIG. 2, the upper support 2 has a cylindrical shape and includes a bottom plate 6, a locking member 7, and a center hole 8 bored in the center of the bottom plate 6.

On the other hand, the lower support 3 has a similar configuration, but is connected to a support member 32 as described later.

Reference numeral 9 denotes a column body, which is made up of a plurality of ladder members 10 successively assembled in the vertical direction.

That is, this ladder member 10 has a plurality of ladder plates 12 pivoted between two parallel base frames 11, as shown in FIG.
, llb at equal intervals and rotatably about a pivot 13 to form a parallelogram.

Therefore, when force is applied to both the base frames 11 in opposite directions so as to fold them, the parallelograms are deformed and the ladder plates 12 are rotated so as to fall down all at once, and the base frames 11.11
become closer to each other, and the overall shape becomes elongated and smaller.

Furthermore, joint parts 14 which are thinner than these are provided at the upper and lower ends of the base frame 11, and a through hole 15 is bored in the center of the joint parts 14.

16 is an upper socket attached to the uppermost ladder member 10, which fixes a holding plate 18 between two base frames 11, and has a through hole in the center of the holding plate 18 and a sliding plate 18a placed thereon. 19 is provided, and the above two base frames 1
7 are each provided with a mounting hole 20 for tightly accommodating the joint portion 14.

Further, a through hole 21 communicating with the through hole 15 is provided so as to penetrate through the base frame 17 when the housing is accommodated.

Reference numeral 22 denotes locking pins protruding from the front and rear surfaces of the base frame 17, and one end of the brace 23 is held and locked by the locking pins 22, as will be described later.

24 is an intermediate socket for connecting two ladder members 10 in the vertical direction, and a joint for fixing a connecting rod between two base frames 25 and connecting horizontal beams to be described later to the left and right end surfaces of the base frame 25. It consists of a series of frames 27.

This base frame 25 is provided with a mounting hole 28 that passes through the top and bottom, and by tightly inserting the joint portions 14 of the upper and lower ladder members 10 into this mounting hole 28, these are integrally connected. ing.

In addition, during this connection, a pin 30 is inserted between the through hole 29 provided in the base frame 25 and the through hole 15 as shown in FIG. 1, so that they can be freely removed from each other. It is now possible to prevent

Denoted at 31 are locking pins protruding from the front and rear of the base frame 25, which are used to lock one end of the brace 23 similar to the above.

In FIG. 1, 32 is a tripod-type support member installed at the bottom of the spherical tank 1, and is connected to the lower support 3 by a turnbuckle 62, and each leg 33 is formed by connecting a plurality of leg members. The length of the legs can be arbitrarily selected by means of an adjusting member 34, and a support base 35 is attached to these legs 33.

A rotatable shaft 36 is supported on the support base 35 and extends through the support base 35.

On the other hand, 37 is a horizontal beam connected to the left and right sides of the intermediate socket 24, and is made up of a frame rod 38 having a U-shaped cross section and a joint frame 39 having a rectangular cross section connected to both ends, and the joint frame 39 at one end is connected to the frame rod 38 having a U-shaped cross section. They are inserted into the joint frame 27 of the intermediate socket 24 and are integrally connected to each other.

A beam socket 40 is inserted into and connected to the joint frame 39 at the other end, and is made up of two cylindrical rods 41 with a rectangular cross section connected by a connecting rod 42.

Further, a joint frame 39 of another horizontal beam 37 is connected to the other end of this beam socket 40.

Note that the beam socket 40 has a locking pin 4 for locking the brace.
3 is installed.

Further, a reinforcing plate 44 is attached to the mounting base of the connecting rod between the base frames 25 described above, and a through hole 45 for inserting a bolt for fixing the end of the press is bored in the reinforcing plate 44.

Next, the means for assembling the scaffolding device will be explained together with the parts used for the assembling.

First, a plurality of ladder members 10 and intermediate sockets 24 are prepared in the spherical tank 1, and a plurality of these are connected and fixed by inserting the joint portions 14 of the base frame 11 into the mounting holes 28, and then Mounting pins 30 are inserted into the through holes 15.29 to prevent them from slipping out.

Further, the upper socket 16 is attached to the uppermost part of the ladder member 10 attached as described above so that the attachment hole 20 of the base frame 17 fits into the joint part 14 of the uppermost one.

Then, the mounting pins 46 are inserted into the through holes 15 and 21 to prevent them from coming off.

Further, a socket receiver 47 is attached to the lowest part of the ladder member 10, and this is set on the support base 35.

Here, the through hole 19 provided in the retaining plate 18 of the upper socket 16 and the center hole 8 of the bottom plate 6 are aligned, and the support shaft 48 and thrust bearing 49 are connected from the outside of the spherical tank 1.
At the same time, the ladder member 10 is lifted sufficiently upward, and a person climbs up the ladder member 10 from below and inserts the bushing 50 from the lower side of the holding plate 18 into the center hole 8.
, insert it into the through hole 19, apply the nut 51 from its lower end, and screw it onto the lower end of the support shaft 48 passed through,
A split pin is inserted into a split groove (not shown) provided in the nut 51, and the upper socket 16 is rotatably supported with respect to the upper support 1-2.

Further, the height of the support member 32 is arbitrarily selected by adjusting the adjustment member 34 downward, and the intermediate portion connected to the lowermost ladder member 10 is attached to the socket receiver 47 on the support base 35. It is made to support the socket 24.

The supported state is maintained suspended by fixing means such as the support shaft 48 and the nut 51.

In this way, the vertical load of the column 9 made of the ladder member 10 is received by the upper support 2.Next, the left and right reinforcing plates 52 interposed between the base frame 17 and the holding plate 18 are made of transparent material. A hole 53 is provided between the through hole 53 and the through hole 45 provided in the reinforcing plate 44 of the intermediate socket 24, and as shown in FIG. , the brace 5 is stretched so that the ladder member 10 is not deformed.
Both ends of 4 are fixed with bolts and nuts.

Next, the joint frame 39 of the horizontal beam 37 is connected to the joint frame 27 of the intermediate socket 24 assembled as described above, and the cylindrical rod 4 of the beam socket 40 is connected to the joint frame 39 at the other end.
1, and the required number of horizontal beams 37, for example, four, are installed side by side on the left and right.

The outermost end of the horizontal beam 37 is brought close to the inner peripheral surface of the spherical tank 1.

In this case, the brace 23 is provided with turnbuckles 55 between the locking pins 22 provided on the upper socket 16 and the locking pins 43 provided on the beam sockets 40, and between the beam sockets 40 in the upper and lower positions. The end of is locked.

It should be noted that each brace 23 is provided diagonally left and right and in the vertical direction as shown in FIG.

In this way, the loads of the horizontal beams 37 suspended via the beam sockets 40 at mutually symmetrical positions are equalized to the center load of the column body 9 by the braces 23 at mutually symmetrical positions, and are balanced against each other. The plurality of horizontal beams 37 on the left and right sides are stably supported.

Also, before and after such assembly work, the horizontal beam 37
As shown in FIG. 4, a plurality of scaffold boards 56 are laid in parallel on the top.

These scaffolding boards 56 have small trees 5 at the front and rear as shown in FIG.
7 is provided in a protruding manner to prevent work parts such as tools from falling.

Further, on the side of the horizontal beam 37, a support 5 supporting a handrail 58 is provided.
9 fitting through holes 60 are provided.

Further, 61 is a protruding scaffold that is attached to the lower part of the tip of the scaffold board 56 so as to be slidable with respect to the horizontal beam 37, and is used to protrude from the wall surface of the spherical tank 1 as necessary. Ru.

In the above, the horizontal beam 37 attached to the front and rear joint frames 27 is formed of independent U-shaped frame rods 38, but these front and rear U-shaped frame rods 38 are Similar to the ladder member 10 of the columnar body 9, by connecting these via a connecting rod whose tip is pivotally supported, it can be made compact when folded and can be easily carried in and out.

According to the scaffolding device configured in this way, it is possible to maintain the optimal posture for painting work, etc. on the inner wall surface of the spherical tank 1 close to the scaffolding board 56 on the horizontal beam or the protruding scaffolding 61 at each of the above-mentioned stages. When changing the working position, place your hand on the inner wall surface and lightly push the scaffolding board 56 with your foot.The scaffolding board 56 slowly moves to the desired position and stops, and the inner wall surface is painted. You can perform work etc. continuously.

According to the present invention, the components of the scaffolding device can be easily folded and disassembled, so they can be made smaller and can be carried into and out of the spherical tank very easily.

First of all, although the column is made up of multiple ladder members that are detachably assembled in the vertical direction, the width of the column itself is small, and it cannot be hung using a crane or the like through a small hole above the spherical tank. It can be inserted or removed smoothly while being lowered.

Also, the upper hole of the spherical tank is not necessarily directly above the center line of the spherical tank, and in this case, it may not be possible to insert a long column straight. It is also possible to divide it into ladder members, insert these ladder members one by one into a spherical tank, and assemble them arbitrarily within the tank.

Furthermore, in this case, the ladder member can be folded into a long and compact form on the principle of a parallelogram, so even if the hole in the tank is very small, it can be carried in and out in the folded state.

Furthermore, the worker can ascend and descend via the ladder member, eliminating the need for an extra elevation member.

In short, it is possible to carry in and out the columns regardless of the position and size of the holes in the tank, and each time the work can be carried out with the holes intact or divided.

Furthermore, the sizes of spherical tanks vary, and it is sufficient to assemble the ladder member according to the size of the spherical tank, so it is highly versatile.

Similarly, by removing the horizontal beam from the beam socket, it can be divided into multiple light and small members, and these small members can be carried in and out regardless of the position and size of the hole in the tank, eliminating the need for a large number of workers. Furthermore, when assembling and disassembling inside the tank, it is only necessary to attach and detach via the beam socket, which greatly improves work efficiency.

Furthermore, since both the column and the horizontal beam can be divided into a plurality of members, even if the hole of the spherical tank is located directly below, there is also the advantage that it can be carried in and taken out from the hole below.

The horizontal beam can connect one or more frame rods in the horizontal direction via beam sockets, so that the number of frame rods can be selected according to the size of the spherical tank. It is more versatile than horizontal beams.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing the entire scaffolding device for a spherical tank according to the present invention, FIG. 2 is an exploded perspective view of the main parts of the scaffolding device, and FIG. FIG. 4 is a plan view showing a part of the scaffold, and FIG. 5 is a perspective view of a part of the scaffold. 1... Spherical tank, 2... Upper support, 3... Lower support, 9... Column body, 10... Ladder member, 11...Base frame,
12... Ladder board, 13... Axis, 23
...Press, 24 ...Intermediate socket,
37...Horizontal beam, 38...Frame rod, 40
...Beam socket, 61...Protruding scaffold.

Claims (3)

[Scope of utility model registration request] (1) A column is rotatably supported between the opposing upper and lower supports of a spherical tank, and this sphere is provided with a horizontal beam extending toward the inner wall of the tank, and this horizontal beam has one end attached to the column. In a scaffolding device that is suspended by a locked press, the column is made up of a plurality of ladder members that are detachably assembled in the longitudinal direction via sockets, and the ladder members are made up of two A parallel base frame and a plurality of ladder plates are rotatably supported between the base frames to form a foldable configuration, and the horizontal beam is provided with two parallel frame rods and an end of the frame rod. The joint frame at the base end is removably connected to the socket on the column side, and another frame rod is removably connected to the joint frame at the other end via the beam socket. A scaffolding device inside a spherical tank, consisting of scaffolding boards laid on the beams. (2) A scaffolding device in a spherical tank according to claim 1 of the utility model registration claim, wherein a joint part is provided at the upper and lower ends of the column, and the joint part is removably inserted into the mounting hole of the socket I. . (3) The scaffolding device in a spherical tank according to claim 1, wherein a press is installed between a column-side socket and a beam socket of a horizontal beam located below the socket I.