JPH1114266A - Stud fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a specific amount of threading of a stud into an iron skin of a furnace structure and prevent a height of each of the studs from being disturbed from each other. SOLUTION: This stud fixing structure is opened such that a bolt section 4a of a stud 4 for use in supporting an irregular-shaped refractory material 3 against a nut member 6 melted and fixed to the inner surface of an iron skin 1, wherein there is provided a clearance holding member 7 for determining an amount of threading of the stud 4 between the inner end of the stud 4 screwed into the nut member 6 and the iron skin 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a stud for supporting an amorphous refractory for lining of various industrial kilns on a steel shell.

[0002]

2. Description of the Related Art In various industrial kilns, when a refractory, particularly a castable, is formed on the inner surface of a steel shell of a furnace, for example, a Y-shaped stud is attached to the steel shell to form an anchor. The refractory is prevented from peeling off.

To attach the stud to the steel, a nut member is fixed to the steel at the stud mounting position in advance by welding, and a bolt portion of a Y-shaped or similar stud is attached to the nut member. Either by screwing in or by welding the stud directly to the skin.

[0004]

However, in the case where the stud is mounted by screwing in the screw, the screwing amount of the stud is not constant due to individual differences between workers because the screwing of the stud at the time of mounting is performed manually. The height of the stud varies, and the support force of the stud varies.

[0005] In the case where the stud is directly welded to the steel shell, when the lining configuration is multi-layered, it takes time to perform the castable work, and particularly when an insulating board is used for the backing, the work of the board tends to be complicated. There is a problem.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. When mounting a stud by screwing, the amount of screwing is fixed and the stud is fixed. The height of the stud is made constant so that the supporting force of the irregular shaped refractory by the stud does not vary.

[0007] As means for solving the above problems, the present invention provides:
In a stud mounting structure for screwing a bolt portion of a stud for supporting an irregular refractory to a nut member welded to an inner surface of a steel shell, the inner end of the stud screwed into the nut member, a steel shell, And a space holding member for determining the screwing amount of the stud.

The spacing member is welded to the steel inside a nut member welded to the steel, or provided at the tip of a bolt portion of a stud.

With the above construction, the bolt of the stud is screwed into the nut member welded to the iron shell, and when the screwed amount reaches a predetermined depth, the bolt is interposed between the iron shell and the tip of the bolt of the stud. No further screwing is possible due to the spacing member, which determines the amount of screwing of the studs, without causing excessive screwing or insufficient screwing, ensuring that all studs are mounted at a uniform height. Can be installed in any situation.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention. FIG. 1 is a sectional view showing an outline of a stud mounting structure according to the present invention. In this example, a heat insulating board 2 having a required thickness T is attached to the inner surface of a steel shell 1 of a furnace, and the castable refractory 3 is attached to the heat insulating board 2. Are laminated to form a castable refractory 3.
The studs 4 (exemplified by Y studs) attached to the inner surface of the steel shell 1 at predetermined intervals are used as anchor members to support the castable refractory 3 so as not to come off.

As shown in an enlarged cross section in FIG. 2, the mounting structure of the stud 4 is such that a bolt at the base of the stud 4 is fixed to a nut member 6 fixed to the inner surface of the steel shell 1 by welding 5 at predetermined intervals. The nut member 6 is a long nut, and is castable 3a in a gap between the stud 4 and the heat insulating board 2 when the nut member 6 is long enough to be buried in the heat insulating board 2. Etc. are filled.

A bar-shaped interval holding member 7 for determining the screwing length L of the bolt portion 4a of the stud 4 screwed into the nut member 6 as a screwing amount sufficient to give a sufficient supporting force to the stud 4. Is fixed to the steel shell 1 by welding 8 at the inner center position of the nut member 6, and when the bolt portion 4a of the stud 4 is screwed in as shown in FIG. Can not be screwed.

Accordingly, the bolt portion 4a of the stud 4 is screwed into the nut member 6 which has been welded to the steel shell 1 in advance, and when the screwed length reaches L, the tip end of the bolt portion 4a becomes the tip end of the spacing member 7. No further screwing is possible due to the contact, so that the studs 4 can be mounted at a constant height without adjusting the screwing amount by hand.

FIG. 3 illustrates an example in which the spacing member 7 is provided not at the iron shell 1 but at the tip of the bolt portion 4a of the stud 4. The end of the spacing member 7 in the above embodiment is shown in FIG. The stud 4 is fixed to the tip end surface of the bolt portion 4 a by welding 9.

Also in this embodiment, the bolt portion 4a of the stud 4 is screwed into the nut member 6 as in the previous embodiment, and when the screwing amount reaches L, the tip of the spacing member 7 contacts the steel bar 1. Can not be screwed any further,
The height of the stud 4 can be made constant.

In the case of the above embodiment, the spacing member 7
May be integrally connected to the tip of the bolt portion 4a of the stud 4. Alternatively, the spacing member 7 may be made of wood or plastic and may be embedded in the nut member 6 in advance.

[0017]

As described above, according to the present invention, the amount of screwing of the stud between the inner end of the stud and the steel shell which is attached by screwing to the nut member welded to the steel shell is determined. The stud height is provided so that the stud height can be evenly adjusted regardless of the operator, regardless of the operator's work, and the support force of the studs for irregular refractories varies. And a stable lining structure can be obtained. Further, since it is not necessary to pay attention to the amount of screwing in the stud when screwing the stud, the stud mounting work becomes easy and the work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an outline of a stud mounting structure according to the present invention.

FIG. 2 is an enlarged view of a main part of the same.

FIG. 3 is a diagram corresponding to FIG. 2, showing another modified example of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Iron skin 2 Insulation board 3 Castable refractory 4 Stud 4a Bolt part 6 Nut member 7 Spacing member

Claims (3)

[Claims] 1. A stud mounting structure in which a bolt portion of a stud for supporting an irregular refractory is screwed into a nut member welded to an inner surface of a steel shell, and the stud is screwed into the nut member. A stud mounting structure comprising a spacing member between an end and an iron shell for determining an amount of screwing of the stud. 2. The stud mounting structure according to claim 1, wherein the spacing member is welded to the steel inside a nut member welded to the steel. 3. The stud mounting structure according to claim 1, wherein said spacing member is provided at a tip of a bolt portion of said stud.