JPH11295467A - Transport device for large diameter o-ring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide transport device for a large diameter O-ring capable of efficiently transporting even a large diameter O-ring in a short time. SOLUTION: An O-ring 1 is elliptically deformed on attaching base 11 in an allowable range to be attached by O-ring stop metal fittings 15, a traveling support base 20 capable of supporting in a state where the attaching base 11 is inclined, the traveling support base 20 and the attaching base 11 are made detachable assembling structure, and the attaching base 11 and the traveling support base 20 are transported by a truck or the like in a range capable of being transported by the truck or the like. In the case where the truck or the like cannot be used, the caster 26 of the traveling support base 20 is assembled to be transported, and the large diameter O-ring can be carried in even from a narrow passage by the small number of workers in a short time. As a result, it can be efficiently carried in and exposure can be reduced to the minimum.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-diameter O-ring conveying apparatus, and is suitable for conveying a large-diameter metal O-ring such as an O-ring for sealing a reactor pressure vessel.

[0002]

2. Description of the Related Art An O-ring is widely used for sealing a flange portion of a pressure vessel or the like, and a large-diameter metal O-ring is also used for sealing a flange portion of a reactor pressure vessel.

[0003] The metal O-ring of this reactor pressure vessel must be replaced with a new one after the reactor pressure vessel is opened for periodic inspection or the like.

Conventionally, when attempting to replace the O-ring of this reactor pressure vessel, the diameter delivered from the factory is, for example, 5 mm.
m new large-diameter O-rings must be carried to the reactor pressure vessel inside the reactor building. A large flat base is prepared, and the O-rings are mounted on this base. The gantry is carried along with the gantry by tilting the gantry obliquely from the large cargo entrance of the reactor building by human tactics.

[0005]

However, in the case of using such a stand and carrying it in by human naval tactics by an operator, in order to convey a narrow passage, the stand must be tilted together with the stand. -There is a problem that it takes time to move or the like and many workers are required.

Further, in the case of a metal O-ring of a reactor pressure vessel, there is a problem that if transporting and moving takes a long time, the problem of worker exposure must be considered.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and aims to provide a large-diameter O-ring conveying device capable of efficiently conveying a large-diameter O-ring in a short time. Is what you do.

[0008]

According to a first aspect of the present invention, there is provided a large-diameter O-ring conveying apparatus.
A mounting base capable of mounting the large-diameter O-ring by deforming it into an elliptical shape within an allowable range, and a traveling support base that supports the mounting base at an angle and that can travel and move. It is characterized in that the base has a detachable assembly structure.

According to this large-diameter O-ring transfer device, a traveling support is provided which can mount the O-ring on the mounting base by deforming the O-ring into an elliptical shape within an allowable range and support the mounting base in an inclined state. The traveling support base and the mounting base are detachably assembled so that the mounting base can be transported by a truck or the like in a range that can be transported by a truck or the like. In this way, a small number of workers can carry a large-diameter O-ring from a narrow passage in a short time.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIGS. 1 and 2 are a schematic perspective view and a partially detailed view showing an embodiment in which a large-diameter O-ring transfer device of the present invention is applied to a metal O-ring of a reactor pressure vessel.

The large-diameter O-ring transfer device 10 includes a mounting base 11 for mounting the large-diameter O-ring 1 by deforming the large-diameter O-ring 1 into an elliptical shape within an allowable range, as shown in FIGS. It is formed in a lattice shape of a pipe structure, and has a shape in which a horizontally elongated rectangle 12 and a vertically elongated rectangle 13 are combined. The mounting base 11 is provided with a connection flange 14 at a substantially central portion so that the mounting base 11 can be vertically divided into two parts by a rectangular part 12 elongated in the horizontal direction, and can be divided at the time of storage.

An O-ring stopper 15 is provided on the upper surface of the lattice-shaped mounting base 11 using such a pipe in correspondence with the mounting position of the large-diameter O-ring 1 to be deformed into an elliptical shape.
For example, as shown in detail in FIGS.
And two large diameter O at the same time with the neoprene rubber holding plate 17
The ring 1 can be fixed.

The holding plate 17 of the O-ring stopper 15 has a mounting groove 18 formed along the arc of the large-diameter O-ring 1 to be deformed into an elliptical shape.

A hanging bracket 19 as shown in FIG. 2 (c) is attached to two places on the upper surface of the mounting base 11, and the mounting base 11 can be lifted in an equilibrium state while maintaining the inclined state. It is arranged and installed as possible.

The large-diameter O-ring transfer device 10 is provided with a traveling support 20 so as to support the mounting base 11 to which the large-diameter O-ring 1 is mounted while being inclined and to be able to move.

The traveling support 20 is shown in FIGS.
As shown in (d), a frame is formed by a pipe, and a bolt 21 is attached to a bracket 21 welded to the lower surface of the mounting base 11.
Two types of struts 2 with one side short and the other side long with a nut
The upper ends of the mounting members 11 are connected to each other so that they can be attached and detached. A bracket 24 is welded to the outer sides of the columns 22 and 23, and a reinforcing member 25 for connecting the bracket 21 of the mounting base 11 obliquely is disposed. It is mounted detachably with bolts and nuts.

A caster 26 for traveling movement is attached to the lower ends of the four corner posts 22 and 23 so as to be movable, and the short post 22 on one side is rotated with the upper end as a fulcrum. In this way, it can be stored in parallel with the mounting base 11, and a flange 27
Is provided so that the lower part of the column 23 on which the casters 26 are mounted can be turned by using the hinge 28 protruding outside of the flange 27 and being mounted as a fulcrum. It can be folded up in parallel with the box so that it can be stored.

A horizontal connecting member 29 is provided for connecting the supporting columns 22 and 23 to form a frame, and reinforcing the connecting members. Both ends of each horizontal connecting member 29 can be attached and detached with bolts and nuts. .

Next, the operation of the large-diameter O-ring conveying device 10 configured as described above and the conveyance of the large-diameter O-ring 1 will be described.

FIG. 3 is an explanatory view of a transfer process of the large-diameter O-ring transfer device 10 according to the present invention.

First, the mounting base 11 is assembled outside the reactor building, and two large-diameter O-rings 1 transported from a factory or the like are attached to the O-ring.
It is placed on the receiving plate 16 of the ring stopper 15, inserted into the mounting groove 18, pressed by the holding plate 17, and mounted in an oval shape within an allowable range.

Thereafter, the traveling support 20 is assembled on a loading platform 30 such as a truck to support the mount 11 in an inclined state, while the four columns 22, 23 to which the casters 26 of the traveling support 20 are attached. Is stored in the upper side.

The mounting table 11 on which the large-diameter O-ring 1 is mounted as described above is connected to the truck bed 3 via the traveling support table 20.
After being placed in a state of being inclined upward to zero, the truck is transported in the passage of the reactor building to the inside of the large cargo entrance.

Since it is difficult to carry in the truck from here on, the columns 22 and 23 to which the casters 26 at the four corners of the traveling support 20 are mounted can be used.

Then, the mounting table 1 is mounted with the crane of the reactor building.
A wire is lifted by hanging wires on two suspending fittings 19 provided in 1 and lowered to the working floor of the reactor pressure vessel.

After being lowered together with the traveling support 20 to the work floor in this way, the transfer is completed by pushing and moving the caster 26 to a predetermined work position.

By using such a large-diameter O-ring transfer device 10, even if the large-diameter O-ring is not damaged, a predetermined reactor pressure vessel can be passed through a narrow passage of a reactor building or a large cargo port. And can be transported in a short time by a small number of workers. Thereby, it is possible to shorten the construction period and reduce the exposure.

Even large diameter O-rings having different diameters can be easily dealt with by mounting O-ring stoppers having a corresponding diameter on the mounting base 11 in advance, and similar transport operations can be performed. Can be widely used.

Further, this large-diameter O-ring conveying device 10
In this case, since the frame structure is formed by pipes, the weight can be reduced, the mounting base 11 can be divided via the flange, and the caster 26 can be stored via the hinge, so that the transportation and storage are easy.

In the above embodiment, the apparatus using the large-diameter O-ring has been described with respect to the reactor pressure vessel. However, the present invention is not limited to this.
It can be widely applied to transporting rings.

[0031]

As described above in detail with one embodiment, according to the large-diameter O-ring conveying apparatus according to the first aspect of the present invention, the mounting base has an elliptical shape as long as the O-ring can be tolerated. A traveling support base that can support the mounting base in an inclined state is prepared, and the traveling support base and the mounting base are detachably assembled. The platform can be transported by truck, etc., and in places where trucks etc. cannot be used, the traveling support is assembled and transported, so that a small number of workers can quickly bring in a large O-ring from a narrow passage. can do.

Thus, in the case of periodic inspection of the reactor pressure vessel, etc., it is possible to shorten the construction period and reduce the exposure of workers.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an embodiment in which a large-diameter O-ring transfer device of the present invention is applied to a metal O-ring of a reactor pressure vessel.

FIG. 2 is a partial detailed view of an embodiment in which the large-diameter O-ring transfer device of the present invention is applied to a metal O-ring of a reactor pressure vessel.

FIG. 3 is an explanatory view of a transfer process according to an embodiment in which the large-diameter O-ring transfer device of the present invention is applied to a metal O-ring of a reactor pressure vessel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Large-diameter O-ring of reactor pressure vessel 10 Large-diameter O-ring conveying device 11 Mounting stand 14 Connecting flange 15 O-ring stopper 20 Running support 22, 23 Support 25 Reinforcement 26 Caster 28 Hinge 29 Horizontal connection 30 Track Bed

Claims (1)

[Claims] 1. A mounting base capable of mounting a large-diameter O-ring by deforming it into an elliptical shape within an allowable range, and a traveling support base capable of supporting the mounting base while being inclined and traveling. A transfer device for a large-diameter O-ring, wherein the mounting base and the traveling support base have a detachable assembly structure.