JPS5934183A - Assembling method of octagon - Google Patents

Abstract

PURPOSE:To raise the assembling accuracy, and also to simplify the asembling work, by forming each cylindrical body by an assembly structure by a platelike member having a bolt coupling device, and positioning all members by a side plate. CONSTITUTION:A frame 5 for forming a regular octagon consists of frames 8, 9 of the upper and lower parts divided into almost equal parts, and the upper and lower parts are coupled as one body through flanges 10, 10. A return yoke 4 and filters 2, 3 of the inside and outside layers consist of eight platelike members which are formed rectangularly, the side part of each member is assembled as one body by using mutually a stud bolt 11 and a nut 12, and a regular octagon similar to the frame 5 is formed. Each member extends over the overall length in the direction of the axial core of the octagon, and both end parts are supported by the frames 8, 9 of the upper and lower parts. The member of the lower half part of each cylindrical body is coupled by the nut 12 for clamping from the inside, and the member of the upper half part is coupled by the nut for clamping from the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of assembling a structure in which rectangular cylindrical bodies are arranged in multiple layers, particularly a structure that constitutes a part of an elementary particle detector used for experimental research in high energy physics. .

The elementary particle detector used to study the existence and characteristics of the ultimate fundamental particles and forks that make up matter consists of a central device consisting of a beam haptic, a superconducting coil, etc., and a system that connects these devices. It may also be constituted by an outer shell structure that is supported from the outside and further functions as a μ particle detector.

The outer shell structure has a μ particle detector (1) as shown in Figure 1.
and muon filters (hereinafter referred to as filters) (2) (3) to slow down the velocity of μ particles, return yokes (4) to further strengthen the electric field generated by the superconducting coils, and filters (2) (3). and a frame (5) for supporting both ends of the return yoke (4).
), a pole tip base (6) and a pole tip (7) that cover the center opening of the frame (5).

On the other hand, equipment for colliding high-energy particles and capturing the generated elementary particles inevitably becomes larger, and the total weight of elementary particle detectors reaches approximately 25,008. Therefore, unless the experimental equipment is installed on the coast where it is conveniently located, the local
Requires

If on-site assembly\γ is performed, the dimensional accuracy after assembly,
Important issues include ease of assembly and structural design to facilitate assembly.

The present invention provides a method for accurately and easily assembling an octagon, which is the main part of an outer shell structure, at a construction site, which is a multi-layered rectangular cylindrical structure consisting of a filter, return yoke, frame, ball tip, hole tip heath, etc. This was done to provide a structure in which each cylindrical body is assembled and packed by a plate-like member having a bolt connection device, and the members constituting the lower half of each cylindrical body are located on the outer layer of the structure. Also, the members constituting the upper half of the cylindrical body may be located in the inner layer of the packing body, and are successively installed between the side plates.
Each member is bolted to each member that was previously attached to the side plate, and since all the members are accurately positioned by the side plate, the assembly accuracy is high and the assembly work is easy. This has the advantage of being easy to assemble even when the members are large in size.

Embodiments of the present invention will be described below with reference to the drawings.

Figures 2 and 4 show the schematic structure of an octagon. The frame (5) forming the regular octagon is composed of upper and lower frames (8) and (9) divided into almost equal parts, and the flanges 000 and 000. The upper and lower parts are connected together via the . Return yoke (4) and inner and outer layer filters (2) (3
) consists of eight plate-shaped members, each formed into a rectangle, and the sides of each member are implanted into each other (pol) (11)
and nuts θ are assembled together to form a regular octagon similar to the frame (5). Further, each member extends over its entire length in the direction of the axis of the octagon, and both ends thereof are supported by upper and lower frames (8) (9) K.

As shown in Figure 1, the members located in the lower half of each cylindrical body are bolted to each other by nuts tightened from the inside of the cylindrical body. The members located at K are connected by bolts by tightening the nut 02 from the outside of the cylindrical body.

In each inner 11111 side part a3α3 of the upper and lower frames (8) (9), as shown in FIG. 6 and FIG. The matching grooves θaα are bored (shown with flanges in FIGS. 4 to 6). The arrangement of the grooves in the upper frame (8) K is the same as the arrangement in the lower frame (9) except that there is a slight difference in the upper side of the rectangular shape. spacers 0 and Q on the inner peripheral surfaces of the frames (8) and (9).
Supported through.

Upper and lower frames (8) (9) K groove (14)
0! 'il is all machined at the factory, so it can be machined with high precision, and during on-site assembly, each member is positioned by engaging with this groove 04) θ0, so assembly work can be done easily. Furthermore, assembly precision can be improved. Also, machining for positioning is done using the groove 04) Q
Since it is only necessary to process i19, the cost for improving assembly accuracy can be kept to a minimum.

Next, the assembly procedure of the octagon will be explained with reference to FIGS. 7 to 12. First, the outer filter member (17) is adjusted to the standard height using a support stand (4I) such as a jack, and is connected to the stand (42).
Attach the lower frame (9) to both ends of the
) on the pedestal (4) and remove its glue support θυ (see Figure 7).

Next, the inner filter member (C) is vertically lowered and connected to the groove of the lower frame (9). Next, attach the return yoke member (G) to the top of the filter member (A) via the spacer (43).Then, attach the return yoke member (G) to the upper part of the filter member (A).
Insert the filter diagonally from above along the groove (1 line θ4) K, and tighten the nut (6) from above to tighten each filter member Qη(
c) Fix it on the top surface. Next, attach each filter member to the inner side of the lower frame (13) using bolts (not shown).
(See Figure 8).

Next, take the return yoke member (7) inside the inner filter member (η (A) through the spacer 0→), and tighten the nut (2) from above to fix the return yoke member (33K). .Next, filter part (E) (2
1) Connect (c) and (e) to the grooves (IQ (
14) Insert from above along K and tighten nut 02 from diagonally above (Kete filter part (18) Q'14
(a) Fix @suζ. Next, attach the return yoke member (c) to the filter member (A) via the spacer member.
, and tighten one nut diagonally from above to secure the return yoke member (to) CI K (see Figure 9).

Next, set the mounting jig Q7) Q7) with the filter part ■g3.5 K jack 0(i), place the return yoke member (c) OQ on top of it, and lightly tighten the nut 02 from above. Temporarily assemble the return yoke member (g) onto the C cut. Next, place the return yoke member θO between the return yoke members (G) OQ, and insert the neck 1- from the side.
After temporarily assembling by lightly tightening 02 and adjusting the dimensions,
Tighten and fix each oak) 02 (see Figure 11).

Next, the upper frame (8) is placed on the lower frame (9), and the upper and lower frames (3) (9)
), remove the mounting jig oI, then attach the inner filter member (7) OI) along the groove (+4) Q61 provided in the upper frame (8), and then remove the outer filter member (OI). 2) Insert (B) and tighten Nara I-Q from above to remove filter parts (C) (E) (B) (gl
)K fixed. After that, the inner and outer filters (2) (
3) is fixed to the inner side surface part 03 of the upper frame using a bolt (not shown) (see FIG. 11).

Next, add the inner filter member 02, and then the outer filter member 02.
Ta part! 3 (goods) from above the filter part (7) 0υ
and between the filter members (A) and (C), and tighten the nut (2) from the side to remove the filter member (A) and between the filter members (C).
7) (31) Fix to h and n, respectively (see Figure 12).

By the above steps, the upper and lower frames (8) (9),
Return yoke (4) and inner and outer filters (2)
(3) are assembled together. Next, using a device not shown, the ball chip base (6) is attached to the return yoke (4).
), then insert the ball tip (7) into the pole tip pels (6).

Note that the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

Since the octagon assembly method of the present invention has the above-described configuration, it exhibits the following excellent effects.

1i) Plate-shaped part 1 having a bolt connection device for each cylindrical body
The assembly structure is 1'A'K, and the lower half of each cylindrical body is 4
Attach the members forming the 7G between the side plates in order from those located on the outer layer of the structure, and the members forming the upper half from those located on the inner layer of the structure. Since the parts are connected by bolts, all members can be positioned in the correct position by the side plates, increasing assembly accuracy.

(11) By providing grooves on the side plates that engage with the ends of the members to support the members, each member can be easily positioned, and the grooves on the side plates can be processed in the factory. Therefore, assembly accuracy can be improved.

1ii1 Each member was connected by bolts, so
Even if the members are large, there is no need to take into account the thermal deformation that occurs when welding, and assembly is easy.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of an elementary particle detector, FIGS. 2 and 6 show examples of structures to which the method of the present invention is applied, and FIG. 2 is a cutaway side view of an octagon. The figure is a reduced front view taken from the m-m direction in Fig. 2, Fig. 4 is a reduced front view of the lower frame in Fig. 2, and Fig. 5 is a plane taken from the ■-■ direction in Fig. 4. Figure 6 is a reduced front view of the upper frame in Figure 2, and Figures 7 to 1 are
FIG. 2 is an explanatory diagram showing the assembly procedure of an octagon according to an embodiment of the present invention. In the figure, (2) and (3) are muon filters, and (5)
is the frame, (lυ is the stud bolt, (2) is the bolt, and 0η or 0 old two-irtater member. Patent applicant Ishikawajima-Harima Heavy Industries Co., Ltd.) Fig. 4 15 14 14 1551
7 b]l

Claims (1)

[Claims] 1) A multi-layer rectangular cylindrical structure in which a plurality of cylindrical bodies each having a regular polygonal cross section are arranged horizontally in multiple layers, and both ends of the cylindrical bodies are supported by side plates. In the assembly method, each cylindrical body can be assembled by means of a plate-like member in which each side of the cylindrical body is formed separately and has a bolt device for connecting them to each other. : The members constituting the lower half of each cylindrical body are sequentially attached between the side plates starting from the one located on the outer layer of the structure, and the members attached to the side plates are attached to the members of the cylindrical body. Tighten and bolt from the inside, and attach each member constituting the upper half of each cylindrical body between the side plates in order from the one located in the inner layer of the structure, and attach the member 7 to the K i[tll plate. A method for assembling an octagon, which is characterized in that the cylindrical body is fastened and bolted to a member from the outside of the cylindrical body.